Patent Grant
12183240
Exemplary embodiments of the present inventive concept relate to display devices, and more particularly to display panels and the display devices including the display panels.
As a resolution of a display device increases, the number of source channels of a data driver included in the display device may be increased, and thus a manufacturing cost may be increased. To reduce the manufacturing cost, a demultiplexing (or demux) driving scheme in which each source channel of a data driver drives two or more of columns of sub-pixels has been developed. In a display device employing the demux driving scheme, since each source channel drives the two or more of columns of sub-pixels in a time division manner, it may not be possible to secure a sufficient threshold voltage compensation time for compensating a threshold voltage of a driving transistor included in each sub-pixel.
To secure the sufficient threshold voltage compensation time, a structure including two data lines in each column of sub-pixels has been developed. In a display device having the structure, a data voltage of a data line coupled to a sub-pixel in a current row may be maintained while a data voltage is applied to a sub-pixel in the next row, and thus the sufficient threshold voltage compensation time of one horizontal time (or 1H time) may be secured. However, since two data lines should be disposed between two adjacent sub-pixel columns, a coupling between the two data lines may occur. To prevent the coupling, a driving method that simultaneously drives the two data lines between the two adjacent sub-pixel columns may be considered. However, to perform the driving method, a data driver should have one or more dummy source channels.
Some exemplary embodiments provide a display panel capable of preventing a coupling between data lines without a dummy source channel.
Some exemplary embodiments provide a display device capable of preventing a coupling between data lines without a dummy source channel.
According to exemplary embodiments, there is provided a display panel including a first pixel group including sub-pixels coupled to a first scan line and located in first through N-th sub-pixel columns, where N is an even number greater than or equal to 2, a second pixel group including sub-pixels coupled to the first scan line and located in (N+1)-th through 2N-th sub-pixel columns, a third pixel group including sub-pixels coupled to a second scan line adjacent to the first scan line and located in the first through N-th sub-pixel columns, and a fourth pixel group including sub-pixels coupled to the second scan line and located in the (N+1)-th through 2N-th sub-pixel columns. The first pixel group and the second pixel group are sequentially driven during a first scan on time in which the first scan line is driven. Consecutive N−1 sub-pixels among the sub-pixels of the third pixel group and one sub-pixel among the sub-pixels of the fourth pixel group are driven during a first portion of a second scan on time in which the second scan line is driven, and consecutive N−1 sub-pixels among the sub-pixels of the fourth pixel group and one sub-pixel among the sub-pixels of the third pixel group are driven during a second portion of the second scan on time.
In exemplary embodiments, the first scan on time may be divided into a first sub-scan on time and a second sub-scan on time, the sub-pixels of the first pixel group located in the first through N-th sub-pixel columns may be driven during the first sub-scan on time, and the sub-pixels of the second pixel group located in the (N+1)-th through 2N-th sub-pixel columns may be driven during the second sub-scan on time. The second scan on time may be divided into a third sub-scan on time and a fourth sub-scan on time, the N−1 sub-pixels of the third pixel group located in the first through (N−1)-th sub-pixel columns and the one sub-pixel of the fourth pixel group located in the 2N-th sub-pixel column may be driven during the third sub-scan on time, and the consecutive N−1 sub-pixels of the fourth pixel group located in the (N+1) through (2N−1)-th sub-pixel columns and the one sub-pixel of the third pixel group located in the N-th sub-pixel column may be driven during the fourth sub-scan on time.
In exemplary embodiments, the first scan on time may be divided into a first sub-scan on time and a second sub-scan on time, the sub-pixels of the first pixel group located in the first through N-th sub-pixel columns may be driven during the first sub-scan on time, and the sub-pixels of the second pixel group located in the (N+1)-th through 2N-th sub-pixel columns may be driven during the second sub-scan on time. The second scan on time may be divided into a third sub-scan on time and a fourth sub-scan on time, the N−1 sub-pixels of the third pixel group located in the second through N-th sub-pixel columns and the one sub-pixel of the fourth pixel group located in the (N+1)-th sub-pixel column may be driven during the third sub-scan on time, and the consecutive N−1 sub-pixels of the fourth pixel group located in the (N+2) through 2N-th sub-pixel columns and the one sub-pixel of the third pixel group located in the first sub-pixel column may be driven during the fourth sub-scan on time.
In exemplary embodiments, the display panel may further include a plurality of data lines, two data lines of the plurality of data lines disposed in each sub-pixel column.
In exemplary embodiments, the display panel may further include first through 2N-th left data lines disposed at left sides of the first through 2N-th sub-pixel columns, and first through 2N-th right data lines disposed at right sides of the first through 2N-th sub-pixel columns.
In exemplary embodiments, odd-numbered sub-pixels among the sub-pixels of the first and second pixel groups coupled to the first scan line may be coupled to odd-numbered right data lines among the first through 2N-th right data lines, even-numbered sub-pixels among the sub-pixels of the first and second pixel groups coupled to the first scan line may be coupled to even-numbered left data lines among the first through 2N-th left data lines, odd-numbered sub-pixels among the sub-pixels of the third and fourth pixel groups coupled to the second scan line may be coupled to odd-numbered left data lines among the first through 2N-th left data lines, and even-numbered sub-pixels among the sub-pixels of the third and fourth pixel groups coupled to the second scan line may be coupled to even-numbered right data lines among the first through 2N-th right data lines.
In exemplary embodiments, the display panel may further include a demultiplexer circuit configured to couple N source channels to N data lines selected from among the first through 2N-th left data lines and the first through 2N-th right data lines.
In exemplary embodiments, the demultiplexer circuit may include first demux switches configured to couple the N source channels to the even-numbered left data lines among the first through N-th left data lines and the odd-numbered right data lines among the first through N-th right data lines in response to a first demux control signal, second demux switches configured to couple the N source channels to the even-numbered left data lines among the (N+1)-th through 2N-th left data lines and the odd-numbered right data lines among the (N+1)-th through 2N-th right data lines in response to a second demux control signal, third demux switches configured to couple the N source channels to the odd-numbered left data lines among the first through (N−1)-th and 2N-th left data lines and the even-numbered right data lines among the first through (N−1)-th and 2N-th right data lines in response to a third demux control signal, and fourth demux switches configured to couple the N source channels to the odd-numbered left data lines among the N-th through (2N−1)-th left data lines and the even-numbered right data lines among the N-th through (2N−1)-th right data lines in response to a fourth demux control signal.
In exemplary embodiments, the demultiplexer circuit may include first demux switches configured to couple the N source channels to the even-numbered left data lines among the first through N-th left data lines and the odd-numbered right data lines among the first through N-th right data lines in response to a first demux control signal, second demux switches configured to couple the N source channels to the even-numbered left data lines among the (N+1)-th through 2N-th left data lines and the odd-numbered right data lines among the (N+1)-th through 2N-th right data lines in response to a second demux control signal, third demux switches configured to couple the N source channels to the odd-numbered left data lines among the second through (N+1)-th left data lines and the even-numbered right data lines among the second through (N+1)-th right data lines in response to a third demux control signal, and fourth demux switches configured to couple the N source channels to the odd-numbered left data lines among the first and (N+2)-th through 2N-th left data lines and the even-numbered right data lines among the first and (N+2)-th through 2N-th right data lines in response to a fourth demux control signal.
In exemplary embodiments, the N may be four, the first pixel group may include a first R sub-pixel, a first G sub-pixel, a first B sub-pixel and a first G′ sub-pixel respectively located in the first through fourth sub-pixel columns, the second pixel group may include a second R sub-pixel, a second G sub-pixel, a second B sub-pixel and a second G′ sub-pixel respectively located in the fifth through eighth sub-pixel columns, the third pixel group may include a third B sub-pixel, a third G′ sub-pixel, a third R sub-pixel and a third G sub-pixel respectively located in the first through fourth sub-pixel columns, and the fourth pixel group may include a fourth B sub-pixel, a fourth G′ sub-pixel, a fourth R sub-pixel and a fourth G sub-pixel respectively located in the fifth through eighth sub-pixel columns.
In exemplary embodiments, the first scan on time may be divided into a first sub-scan on time and a second sub-scan on time, the first R sub-pixel, the first G sub-pixel, the first B sub-pixel and the first G′ sub-pixel may be driven during the first sub-scan on time, and the second R sub-pixel, the second G sub-pixel, the second B sub-pixel and the second G′ sub-pixel may be driven during the second sub-scan on time. The second scan on time may be divided into a third sub-scan on time and a fourth sub-scan on time, the third B sub-pixel, the third G′ sub-pixel, the third R sub-pixel and the fourth G sub-pixel may be driven during the third sub-scan on time, and the third G sub-pixel, the fourth B sub-pixel, the fourth G′ sub-pixel and the fourth R sub-pixel may be driven during the fourth sub-scan on time.
In exemplary embodiments, the first scan on time may be divided into a first sub-scan on time and a second sub-scan on time, the first R sub-pixel, the first G sub-pixel, the first B sub-pixel and the first G′ sub-pixel may be driven during the first sub-scan on time, and the second R sub-pixel, the second G sub-pixel, the second B sub-pixel and the second G′ sub-pixel may be driven during the second sub-scan on time. The second scan on time may be divided into a third sub-scan on time and a fourth sub-scan on time, the third G′ sub-pixel, the third R sub-pixel, the third G sub-pixel and the fourth B sub-pixel may be driven during the third sub-scan on time, and the third B sub-pixel, the fourth G′ sub-pixel, the fourth R sub-pixel and the fourth G sub-pixel may be driven during the fourth sub-scan on time.
In exemplary embodiments, the N may be two, the first pixel group may include a first R sub-pixel and a first G sub-pixel respectively located in the first and second sub-pixel columns, the second pixel group may include a first B sub-pixel and a first G′ sub-pixel respectively located in the third and fourth sub-pixel columns, the third pixel group may include a second B sub-pixel and a second G′ sub-pixel respectively located in the first and second sub-pixel columns, and the fourth pixel group may include a second R sub-pixel and a second G sub-pixel respectively located in the third and fourth sub-pixel columns.
In exemplary embodiments, the first scan on time may be divided into a first sub-scan on time and a second sub-scan on time, the first R sub-pixel and the first G sub-pixel may be driven during the first sub-scan on time, and the first B sub-pixel and the first G′ sub-pixel may be driven during the second sub-scan on time. The second scan on time may be divided into a third sub-scan on time and a fourth sub-scan on time, the second B sub-pixel and the second G sub-pixel may be driven during the third sub-scan on time, and the second G′ sub-pixel and the second R sub-pixel may be driven during the fourth sub-scan on time.
In exemplary embodiments, the first scan on time may be divided into a first sub-scan on time and a second sub-scan on time, the first R sub-pixel and the first G sub-pixel may be driven during the first sub-scan on time, and the first B sub-pixel and the first G′ sub-pixel may be driven during the second sub-scan on time. The second scan on time may be divided into a third sub-scan on time and a fourth sub-scan on time, the second G′ sub-pixel and the second R sub-pixel may be driven during the third sub-scan on time, and the second B sub-pixel and the second G sub-pixel may be driven during the fourth sub-scan on time.
In exemplary embodiments, the N may be six, the first pixel group may include a first R sub-pixel, a first G sub-pixel, a first B sub-pixel, a second R sub-pixel, a second G sub-pixel and a second B sub-pixel respectively located in the first through sixth sub-pixel columns, the second pixel group may include a third R sub-pixel, a third G sub-pixel, a third B sub-pixel, a fourth R sub-pixel, a fourth G sub-pixel and a fourth B sub-pixel respectively located in the seventh through twelfth sub-pixel columns, the third pixel group may include a fifth R sub-pixel, a fifth G sub-pixel, a fifth B sub-pixel, a sixth R sub-pixel, a sixth G sub-pixel and a sixth B sub-pixel respectively located in the first through sixth sub-pixel columns, and the fourth pixel group may include a seventh R sub-pixel, a seventh G sub-pixel, a seventh B sub-pixel, an eighth R sub-pixel, an eighth G sub-pixel and an eighth B sub-pixel respectively located in the seventh through twelfth sub-pixel columns.
In exemplary embodiments, the first scan on time may be divided into a first sub-scan on time and a second sub-scan on time, the first R sub-pixel, the first G sub-pixel, the first B sub-pixel, the second R sub-pixel, the second G sub-pixel and the second B sub-pixel may be driven during the first sub-scan on time, and the third R sub-pixel, the third G sub-pixel, the third B sub-pixel, the fourth R sub-pixel, the fourth G sub-pixel and the fourth B sub-pixel may be driven during the second sub-scan on time. The second scan on time may be divided into a third sub-scan on time and a fourth sub-scan on time, the fifth R sub-pixel, the fifth G sub-pixel, the fifth B sub-pixel, the sixth R sub-pixel, the sixth G sub-pixel and the eighth B sub-pixel may be driven during the third sub-scan on time, and the sixth B sub-pixel, the seventh R sub-pixel, the seventh G sub-pixel, the seventh B sub-pixel, the eighth R sub-pixel and the eighth G sub-pixel may be driven during the fourth sub-scan on time.
In exemplary embodiments, the first scan on time may be divided into a first sub-scan on time and a second sub-scan on time, the first R sub-pixel, the first G sub-pixel, the first B sub-pixel, the second R sub-pixel, the second G sub-pixel and the second B sub-pixel may be driven during the first sub-scan on time, and the third R sub-pixel, the third G sub-pixel, the third B sub-pixel, the fourth R sub-pixel, the fourth G sub-pixel and the fourth B sub-pixel may be driven during the second sub-scan on time. The second scan on time may be divided into a third sub-scan on time and a fourth sub-scan on time, the fifth G sub-pixel, the fifth B sub-pixel, the sixth R sub-pixel, the sixth G sub-pixel, the sixth B sub-pixel and the seventh R sub-pixel may be driven during the third sub-scan on time, and the fifth R sub-pixel, the seventh G sub-pixel, the seventh B sub-pixel, the eighth R sub-pixel, the eighth G sub-pixel and the eighth B sub-pixel may be driven during the fourth sub-scan on time.
According to exemplary embodiments, there is provided a display panel including M first pixel groups including sub-pixels coupled to a first scan line and located in consecutive N sub-pixel columns, where M is an integer greater than 1, and N is an even number greater than or equal to 2, and second pixel groups, each second pixel group including sub-pixels coupled to a second scan line adjacent to the first scan line and located in the consecutive N sub-pixel columns. The first pixel groups are sequentially driven during a first scan on time in which the first scan line is driven. A second scan on time in which the second scan line is driven is divided into M sub-scan on times, and consecutive N−1 sub-pixels among the sub-pixels of a first one of the second pixel groups and one sub-pixel among the sub-pixels of a second one of the second pixel groups are driven during each sub-scan on time.
According to exemplary embodiments, there is provided a display device including a display panel including a first pixel group including sub-pixels coupled to a first scan line and located in first through N-th sub-pixel columns, where N is an even number greater than or equal to 2, a second pixel group including sub-pixels coupled to the first scan line and located in (N+1)-th through 2N-th sub-pixel columns, a third pixel group including sub-pixels coupled to a second scan line adjacent to the first scan line and located in the first through N-th sub-pixel columns, and a fourth pixel group including sub-pixels coupled to the second scan line and located in the (N+1)-th through 2N-th sub-pixel columns, a scan driver configured to drive the first and second scan lines, a data driver configured to drive the first through fourth pixel groups by applying data voltages to the first through fourth pixel groups, and a controller configured to control the scan driver and the data driver. The data driver sequentially drives the first pixel group and the second pixel group during a first scan on time in which the first scan line is driven. The data driver drives consecutive N−1 sub-pixels among the sub-pixels of the third pixel group and one sub-pixel among the sub-pixels of the fourth pixel group during a first portion of a second scan on time in which the second scan line is driven, and drives consecutive N−1 sub-pixels among the sub-pixels of the fourth pixel group and one sub-pixel among the sub-pixels of the third pixel group during a second portion of the second scan on time.
In exemplary embodiments, the display panel may have an RGBG′ pixel structure. The controller may include a data converter configured to convert RGB data into RGBG′ data, and a data remapper configured to remap the RGBG′ data for the third pixel group and the fourth pixel group.
In exemplary embodiments, the data remapper may swap data for the one sub-pixel of the third pixel group and data for the one sub-pixel of the fourth pixel group in the RGBG′ data.
In exemplary embodiments, the display panel may further include a plurality of data lines, two data lines of the plurality of data lines disposed in each sub-pixel column.
In exemplary embodiments, the display panel may further include a demultiplexer circuit configured to couple N source channels to N data lines selected from among the plurality of data lines in response to a plurality of demux control signals received from the controller.
As described above, a display panel and a display device according to exemplary embodiments may include first and second pixel groups coupled to a first scan line and third and fourth pixel groups coupled to a second scan line. The first and second pixel groups may be sequentially driven during a first scan on time, N−1 sub-pixels in the third pixel group and one sub-pixel in the fourth pixel group may be driven during a first portion of a second scan on time, and N−1 sub-pixels in the fourth pixel group and one sub-pixel in the third pixel group may be driven during a second portion of the second scan on time. Accordingly, a coupling between data lines may be prevented without a dummy source channel.
Illustrative, non-limiting exemplary embodiments will be more clearly understood from the following detailed description in conjunction with the accompanying drawings.
Hereinafter, embodiments of the present inventive concept will be explained in detail with reference to the accompanying drawings.
Referring to
The display panel 110 may include a plurality of data lines LDL1 through LDLK and RDL1 through RDLK, a plurality of scan lines SL1 through SLL, and the plurality of sub-pixels SP11 through SPLK coupled to the plurality of data lines LDL1 through LDLK and RDL1 through RDLK and the plurality of scan lines SL1 through SLL. In some exemplary embodiments, each sub-pixel SP11 through SPLK may include an organic light emitting diode (OLED), and the display panel 110 may be an OLED display panel. In some exemplary embodiments, each sub-pixel SP11 through SPLK may further include a driving transistor that provides a driving current to the OLED, and may perform a threshold voltage compensation operation that compensates a threshold voltage of the driving transistor during a threshold voltage compensation time.
In some exemplary embodiments, two data lines of the plurality of data lines LDL1 through LDLK and RDL1 through RDLK may be disposed in each sub-pixel column SPC1 through SPCK. Thus, the display panel 110 may have K sub-pixel columns SPC1 through SPCK, where K is an integer greater than 1, and may have 2K data lines LDL1 through LDLK and RDL1 through RDLK. For example, as illustrated in
The sub-pixels SP11 through SPLK may be alternately coupled to the left data lines LDL1, LDL2, LDL3, LDL4, . . . , LDLK and the right data lines RDL1, RDL2, RDL3, RDL4, . . . , RDLK according to a sub-pixel column direction and according to a sub-pixel row direction. For example, as illustrated in
As described above, since two data lines (e.g., LDL1 and RDL1) are disposed in each sub-pixel column (e.g., SPC1), and the sub-pixels SP11 through SPLK are alternately coupled to the left data lines LDL1, LDL2, LDL3, LDL4, . . . , LDLK and the right data lines RDL1, RDL2, RDL3, RDL4, . . . , RDLK according to the sub-pixel column direction and according to the sub-pixel row direction, a data voltage of a data line (e.g., RDL1) coupled to a sub-pixel (e.g., SP11) in a current row may be maintained while a data voltage is applied through another data line (e.g., LDL1) to a sub-pixel (e.g., SP21) in the next row. Accordingly, the threshold voltage compensation time greater than or equal to one horizontal time (or 1H time) may be sufficiently secured.
The scan driver 130 may sequentially drive the plurality of scan lines SL1 through SLL based on a scan control signal SCS received from the controller 170. In some exemplary embodiments, the scan control signal SCS may include, but not be limited to, a start signal and an input clock signal.
The data driver 150 may provide the data voltages to the plurality of sub-pixels SP11 through SPLK based on a data control signal DCS and image data ODAT received from the controller 170. In some exemplary embodiments, the data control signal DCS may include, but not be limited to, a horizontal start signal and a load signal. The data driver 150 may include a plurality of source channels SC1, SC2, . . . , SCJ for respectively outputting the data voltages. Here, each source channel SC1, SC2, . . . , SCJ may mean an element of the data driver 150, a line for outputting the data voltage, or a combination of the element and the line.
In some exemplary embodiments, the number of the source channels SC1, SC2, . . . , SCJ in the data driver 150 may be less than the number of the sub-pixel columns SPC1 through SPCK in the display panel 110. For example, the display panel 110 may include the K sub-pixel columns SPC1 through SPCK, and the data driver 150 may include K/2 source channels SC1, SC2, . . . , SCJ. Thus, in this case, a ratio of the number of the source channels SC1, SC2, . . . , SCJ to the number of the sub-pixel columns SPC1 through SPCK may be, but not be limited to, 1:2. For example, the ratio of the number of the source channels SC1, SC2, . . . , SCJ to the number of the sub-pixel columns SPC1 through SPCK may be 1:3, 1:4, 1:5, 1:6, or an arbitrary ratio.
In some exemplary embodiments, in a case where the number of the source channels SC1, SC2, . . . , SCJ is less than the number of the sub-pixel columns SPC1 through SPCK, or in a case where the number of the source channels SC1, SC2, . . . , SCJ is less than the number of the data lines LDL1 through LDLK and RDL1 through RDLK, the display panel 110 may further include a demultiplexer circuit 120 that selectively couples the plurality of source channels SC1, SC2, . . . , SCJ of the data driver 150 to the plurality of data lines LDL1 through LDLK and RDL1 through RDLK in response to a demultiplexing (or demux) control signal DMCS received from the controller 170. For example, in a case where the number of the source channels SC1, SC2, . . . , SCJ is K/2, the number of the sub-pixel columns SPC1 through SPCK is K, and the number of the data lines LDL1 through LDLK and RDL1 through RDLK is 2K, the demultiplexer circuit 120 may couple the source channels SC1, SC2, . . . , SCJ to K/2 data lines of the 2K data lines LDL1 through LDLK and RDL1 through RDLK during a first portion of an odd-numbered scan on time in which the odd-numbered scan line (e.g., SL1) is driven, may couple the source channels SC1, SC2, . . . , SCJ to other K/2 data lines of the 2K data lines LDL1 through LDLK and RDL1 through RDLK during a second portion of the odd-numbered scan on time, may couple the source channels SC1, SC2, . . . , SCJ to still other K/2 data lines of the 2K data lines LDL1 through LDLK and RDL1 through RDLK during a first portion of an even-numbered scan on time in which the even-numbered scan line (e.g., SL2) is driven, and may couple the source channels SC1, SC2, . . . , SCJ to further still other K/2 data lines of the 2K data lines LDL1 through LDLK and RDL1 through RDLK during a second portion of the even-numbered scan on time.
The controller 170 (e.g., a timing controller) may receive input image data IDAT and a control signal CONT from an external host processor (e.g., a graphic processing unit (GPU), an application processor (AP), a graphic card, etc.). In some exemplary embodiments, the input image data IDAT may be RGB data including red image data, green image data and blue image data. Further, in some exemplary embodiments, the control signal CONT may include, but not be limited to, a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, a master clock signal, etc. The controller 170 may control operations of the scan driver 130, the data driver 150 and/or the demultiplexer circuit 120 based on the control signal CONT and the input image data IDAT.
In some exemplary embodiments, the controller 170 may include a data converter 180 that converts an image format of the input image data IDAT, and a data remapper 190 that performs a data remapping operation on image data output from the data converter 180. For example, the display panel 110 may have an RGBG′ pixel structure, and the data converter 180 may convert the input image data IDAT that are the RGB data into RGBG′ data. Further, the data remapper 190 may generate the image data ODAT provided to the data driver 150 by performing the data remapping operation on the RGBG′ data output from the data converter 180. In some exemplary embodiments, the data remapper 190 may output the RGBG′ data for odd-numbered sub-pixel rows (e.g., sub-pixel rows coupled to SL1, . . . ) as it is, and may remap the RGBG′ data for even-numbered sub-pixel rows (e.g., sub-pixel rows coupled to SL2, . . . , SLK). In other exemplary embodiments, the data remapper 190 may output the even-numbered sub-pixel rows as it is, and may remap the RGBG′ data for the odd-numbered sub-pixel rows.
In the display device 100 according to exemplary embodiments, the sub-pixels SP11 through SPLK of the display panel 110 may be grouped into pixel groups such that each pixel group includes consecutive N sub-pixels, where N is an even number greater than or equal to 2. In some exemplary embodiments, the sub-pixels (e.g., SP11 through SP1K) coupled to the odd-numbered scan line (e.g., the first scan line SL1) may be alternately grouped into a first pixel group and a second pixel group. For example, sub-pixels coupled to the first scan line SL1 and located in first through N-th sub-pixel columns may be grouped into the first pixel group, sub-pixels coupled to the first scan line SL1 and located in (N+1)-th through 2N-th sub-pixel columns may be grouped into the second pixel group, sub-pixels coupled to the first scan line SL1 and located in (2N+1)-th through 3N-th sub-pixel columns may be grouped again into the first pixel group, and sub-pixels coupled to the first scan line SL1 and located in (3N+1)-th through 4N-th sub-pixel columns may be grouped again into the second pixel group. The first pixel groups and the second pixel groups may be sequentially driven during an odd-numbered scan on time in which the odd-numbered scan line (e.g., SL1) is driven. For example, during a first portion of the odd-numbered scan on time, the demultiplexer circuit 120 may couple the source channels SC1, SC2, . . . , SCJ to data lines coupled to the sub-pixels of the first pixel groups, and the data driver 150 may substantially simultaneously drive the first pixel groups. Thereafter, during a second portion of the odd-numbered scan on time, the demultiplexer circuit 120 may couple the source channels SC1, SC2, . . . , SCJ to data lines coupled to the sub-pixels of the second pixel groups, and the data driver 150 may substantially simultaneously drive the second pixel groups. Here, driving each pixel group may mean writing the data voltages to the sub-pixels of the pixel group such that the sub-pixels emit light.
Further, the sub-pixels (e.g., SP21 through SP2K) coupled to the even-numbered scan line (e.g., the second scan line SL2) may be alternately grouped into a third pixel group and a fourth pixel group. For example, sub-pixels coupled to the second scan line SL2 and located in the first through N-th sub-pixel columns may be grouped into the third pixel group, sub-pixels coupled to the second scan line SL2 and located in the (N+1)-th through 2N-th sub-pixel columns may be grouped into the fourth pixel group, sub-pixels coupled to the second scan line SL2 and located in the (2N+1)-th through 3N-th sub-pixel columns may be grouped again into the third pixel group, and sub-pixels coupled to the second scan line SL2 and located in the (3N+1)-th through 4N-th sub-pixel columns may be grouped again into the fourth pixel group. Consecutive N−1 sub-pixels among the sub-pixels of each third pixel group and one sub-pixel among the sub-pixels of each fourth pixel group may be driven during a first portion of an even-numbered scan on time in which the even-numbered scan line (e.g., SL2) is driven, and consecutive N−1 sub-pixels among the sub-pixels of each fourth pixel group and one sub-pixel among the sub-pixels of each third pixel group may be driven during a second portion of the second scan on time. Accordingly, in the display device 100 according to exemplary embodiments, a coupling between the data lines LDL1 through LDLK and RDL1 through RDLK may be prevented without a dummy source channel. Preventing the coupling without the dummy source channel according to exemplary embodiments will be described below with reference to
During a first portion of a first scan on time in which a first scan line SL1 is driven, a demultiplexer circuit 220 may couple first through fourth source channels SC1, SC2, SC3 and SC4 to a first right data line RDL1, a second left data line LDL2, a third right data line RDL3 and a fourth left data line LDL4 in response to a first demux control signal DMCS1, and the first pixel groups PG1 coupled to the first scan line SL1 may be driven. Further, during a second portion of the first scan on time, the demultiplexer circuit 220 may couple the first through fourth source channels SC1, SC2, SC3 and SC4 to a fifth right data line RDL5, a sixth left data line LDL6, a seventh right data line RDL7 and an eighth left data line LDL8 in response to a second demux control signal DMCS2, and the second pixel groups PG2 coupled to the first scan line SL1 may be driven.
Thereafter, during a first portion of a second scan on time in which a second scan line SL2 is driven, the demultiplexer circuit 220 may couple the first through fourth source channels SC1, SC2, SC3 and SC4 to a first left data line LDL1, a second right data line RDL2, a third left data line LDL3 and a fourth right data line RDL4 in response to a third demux control signal DMCS3, and the third pixel groups PG2 coupled to the second scan line SL2 may be driven. Further, during a second portion of the second scan on time, the demultiplexer circuit 220 may couple the first through fourth source channels SC1, SC2, SC3 and SC4 to a fifth left data line LDL5, a sixth right data line RDL6, a seventh left data line LDL7 and an eighth right data line RDL8 in response to a fourth demux control signal DMCS4, and the fourth pixel groups PG4 coupled to the second scan line SL2 may be driven.
In this case, since a data voltage is applied to the fifth left data line LDL5 adjacent to the fourth right data line RDL4 in the second portion of the second scan on time after a data voltage for G sub-pixel G3 of the third pixel group PG3 is applied to the fourth right data line RDL4 in the first portion of the second scan on time, the data voltage of the fourth right data line RDL4 may be changed or distorted by a coupling between the fourth right data line RDL4 and the fifth left data line LDL5. Accordingly, the G sub-pixel G3 of the third pixel group PG3 may not emit light with desired luminance. Further, this coupling phenomenon may occur between the eighth right data line RDL8 and the next left data line. That is, the coupling phenomenon may occur in a case where data lines disposed between adjacent sub-pixel columns are driven at different timings.
To prevent the coupling phenomenon occurring in the display panel 210 of
For example, as illustrated in
Accordingly, since data lines disposed between adjacent sub-pixel columns may be substantially simultaneously driven, image quality degradation caused by the coupling between the data lines may be prevented. However, in the case where the left sub-pixel shift scheme where the sub-pixels are shifted by one sub-pixel to the left is applied as illustrated in
To address the problem that the dummy source channel DRSC, DGSC, DBSC and DG′SC should be added in the display panel 310 of
Referring to
Although
The display panel 110a may further include a plurality of data lines LDL1 through LDL8 and RDL1 through RDL8 such that two data lines of the plurality of data lines LDL1 through LDL8 and RDL1 through RDL8 may be disposed per sub-pixel column. In some exemplary embodiments, the display panel 110a may include first through eighth left data lines LDL1 through LDL8 disposed at left sides of the first through eighth sub-pixel columns, and first through eighth right data lines RDL1 through RDL8 disposed at right sides of the first through eighth sub-pixel columns.
Odd-numbered sub-pixels R1, B1, R2 and B2 among the sub-pixels R1, G1, B1, G′1, R2, G2, B2 and G′2 of the first and second pixel groups PG1 and PG2 coupled to the first scan line SL1 may be coupled to odd-numbered right data lines RDL1, RDL3, RDL5 and RDL7 among the first through eighth right data lines RDL1 through RDL8, and even-numbered sub-pixels G1, G′1, G2 and G′2 among the sub-pixels R1, G1, B1, G′1, R2, G2, B2 and G′2 of the first and second pixel groups PG1 and PG2 coupled to the first scan line SL1 may be coupled to even-numbered left data lines LDL2, LDL4, LDL6 and LDL8 among the first through eighth left data lines LDL1 through LDL8. Further, odd-numbered sub-pixels B3, R3, B4 and R4 among the sub-pixels B3, G′3, R3, G3, B4, G′4, R4 and G4 of the third and fourth pixel groups PG3 and PG4 coupled to the second scan line SL2 may be coupled to odd-numbered left data lines LDL1, LDL3, LDL5 and LDL7 among the first through eighth left data lines LDL1 through LDL8, and even-numbered sub-pixels G′3, G3, G′4 and G4 among the sub-pixels B3, G′3, R3, G3, B4, G′4, R4 and G4 of the third and fourth pixel groups PG3 and PG4 coupled to the second scan line SL2 may be coupled to even-numbered right data lines RDL2, RDL4, RDL6 and RDL8 among the first through eighth right data lines RDL1 through RDL8.
The display panel 110a may further include a demultiplexer circuit 120a that couples four source channels SC1, SC2, SC3 and SC4 to four data lines selected from among the first through eighth left data lines LDL1 through LDL8 and the first through eighth right data lines RDL1 through RDL8. The demultiplexer circuit 120a may couple the source channels SC1, SC2, SC3 and SC4 to data lines RDL1, LDL2, RDL3 and LDL4 coupled to the first pixel group PG1, may couple the source channels SC1, SC2, SC3 and SC4 to data lines RDL5, LDL6, RDL7 and LDL8 coupled to the second pixel group PG2, may couple the source channels SC1, SC2, SC3 and SC4 to data lines LDL1, RDL2, LDL3 and RDL8 coupled to three sub-pixels B3, G′3 and R3 of the third pixel group PG3 and one sub-pixel G4 of the fourth pixel group PG4, or may couple the source channels SC1, SC2, SC3 and SC4 to data lines RDL4, LDL5, RDL6 and LDL7 coupled to the remaining one sub-pixel G3 of the third pixel group PG3 and the remaining three sub-pixels B4, G′4 and R4 of the fourth pixel group PG4.
To perform this operation, as illustrated in
In the display panel 110a having this structure, during the first scan on time in which the first scan line SL1 is driven, the first pixel group PG1 and the second pixel group PG2 may be sequentially driven. Further, consecutive three sub-pixels B3, G′3 and R3 among the sub-pixels B3, G′3, R3 and G3 of the third pixel group PG3 and one sub-pixel G4 among the sub-pixels B4, G′4, R4 and G4 of the fourth pixel group PG4 may be driven during the first portion of the second scan on time in which the second scan line SL2 is driven, and consecutive three sub-pixels B4, G′4 and R4 among the sub-pixels B4, G′4, R4 and G4 of the fourth pixel group PG4 and one sub-pixel G3 among the sub-pixels B3, G′3, R3 and G3 of the third pixel group PG3 may be driven during the second portion of the second scan on time. Hereinafter, an operation of the display panel 110a will be described in detail below with reference to
Referring to
During the first sub-scan on time SSOT1, as illustrated in
During the second sub-scan on time SSOT2, as illustrated in
A second scan on time SOT2 in which a second scan signal SS2 is applied to a second scan line SL2 may be divided into a third sub-scan on time SSOT3 and a fourth sub-scan on time SSOT4.
Three sub-pixels B3, G′3 and R3 of a third pixel group PG3 and one sub-pixel G4 of a fourth pixel group PG4 may be driven in the third sub-scan on time SSOT3, and three sub-pixels B4, G′4 and R4 of the fourth pixel group PG4 and one sub-pixel G3 of the third pixel group PG3 may be driven in the fourth sub-scan on time SSOT4. A data converter 180 of
During the third sub-scan on time SSOT3, as illustrated in
During the fourth sub-scan on time SSOT4, as illustrated in
Accordingly, since data lines between adjacent sub-pixel columns may be substantially simultaneously driven and all sub-pixels located in eight sub-pixel columns may be driven by four source channels SC1, SC2, SC3 and SC4, a coupling between the data lines may be prevented without a dummy source channel.
A display panel 110b of
The demultiplexer circuit 120b may include first demux switches SWS1, second demux switches SWS2, third demux switches SWS3 and fourth demux switches SWS4, and the first demux switches SWS1 and the second demux switches SWS2 of the demultiplexer circuit 120b may be substantially the same as the first demux switches SWS1 and the second demux switches SWS2 of the demultiplexer circuit 120a of
The third demux switches SWS3 of the demultiplexer circuit 120b may couple four source channels SC1, SC2, SC3 and SC4 to odd-numbered left data lines LDL3 and LDL5 among second through fifth left data lines LDL2 through LDL5 and even-numbered right data lines RDL2 and RDL4 among second through fifth right data lines RDL2 through RDL5 in response to a third demux control signal DMCS3. Further, the fourth demux switches SWS4 of the demultiplexer circuit 120b may couple the four source channels SC1, SC2, SC3 and SC4 to odd-numbered left data lines LDL1 and LDL7 among first and sixth through eighth left data lines LDL1 and LDL6 through LDL8 and even-numbered right data lines RDL6 and RDL8 among first and sixth through eighth right data lines RDL1 and RDL6 through RDL8 in response to a fourth demux control signal DMCS4.
Referring to
A second scan on time SOT2 in which a second scan signal SS2 is applied to a second scan line SL2 may be divided into a third sub-scan on time SSOT3 and a fourth sub-scan on time SSOT4. Three sub-pixels G′3, R3 and G3 of a third pixel group PG3 and one sub-pixel B4 of a fourth pixel group PG4 may be driven in the third sub-scan on time SSOT3, and three sub-pixels G′4, R4 and G4 of the fourth pixel group PG4 and one sub-pixel B3 of the third pixel group PG3 may be driven in the fourth sub-scan on time SSOT4. To perform this operation, a data remapper 190 of
During the third sub-scan on time SSOT3, as illustrated in
During the fourth sub-scan on time SSOT4, as illustrated in
Accordingly, since data lines between adjacent sub-pixel columns may be substantially simultaneously driven and all sub-pixels located in eight sub-pixel columns may be driven by four source channels SC1, SC2, SC3 and SC4, a coupling between the data lines may be prevented without a dummy source channel.
Unlike a display panel 110a of
The first pixel group PG1 may include a first R sub-pixel R1 and a first G sub-pixel G1 coupled to a first scan line SL1 and located in first and second sub-pixel columns, the second pixel group PG2 may include a first B sub-pixel B1 and a first G′ sub-pixel G′1 coupled to the first scan line SL1 and located in third and fourth sub-pixel columns, the third pixel group PG3 may include a second B sub-pixel B2 and a second G′ sub-pixel G′2 coupled to a second scan line SL2 and located in the first and second sub-pixel columns, and the fourth pixel group PG4 may include a second R sub-pixel R2 and a second G sub-pixel G2 coupled to the second scan line SL2 and located in the third and fourth sub-pixel columns.
A first scan on time in which the first scan line SL1 is driven may be divided into a first sub-scan on time and a second sub-scan on time.
During the first sub-scan on time, as illustrated in
During the second sub-scan on time, as illustrated in
A second scan on time in which the second scan line SL2 is driven may be divided into a third sub-scan on time and a fourth sub-scan on time.
During the third sub-scan on time, as illustrated in
During the fourth sub-scan on time, as illustrated in
Accordingly, since data lines between adjacent sub-pixel columns may be substantially simultaneously driven and all sub-pixels located in four sub-pixel columns may be driven by two source channels SC1 and SC2, a coupling between the data lines may be prevented without a dummy source channel. However, although each of source channels for driving the display panel 110a of
A display panel 110d of
A first scan on time in which a first scan line SL1 is driven may be divided into a first sub-scan on time and a second sub-scan on time. During the first sub-scan on time SSOT1, as illustrated in
A second scan on time in which the second scan line SL2 is driven may be divided into a third sub-scan on time and a fourth sub-scan on time.
During the third sub-scan on time, as illustrated in
During the fourth sub-scan on time, as illustrated in
Unlike a display panel 110a of
The first pixel group PG1 may include a first R sub-pixel R1, a first G sub-pixel G1, a first B sub-pixel B1, a second R sub-pixel R2, a second G sub-pixel G2 and a second B sub-pixel B2 respectively located in first through sixth sub-pixel columns, the second pixel group PG2 may include a third R sub-pixel R3, a third G sub-pixel G3, a third B sub-pixel B3, a fourth R sub-pixel R4, a fourth G sub-pixel G4 and a fourth B sub-pixel B4 respectively located in seventh through twelfth sub-pixel columns, the third pixel group PG3 may include a fifth R sub-pixel R5, a fifth G sub-pixel G5, a fifth B sub-pixel B5, a sixth R sub-pixel R6, a sixth G sub-pixel G6 and a sixth B sub-pixel B6 respectively located in the first through sixth sub-pixel columns, and the fourth pixel group PG4 may include a seventh R sub-pixel R7, a seventh G sub-pixel G7, a seventh B sub-pixel B7, an eighth R sub-pixel R8, an eighth G sub-pixel G8 and an eighth B sub-pixel B8 respectively located in the seventh through twelfth sub-pixel columns.
A first scan on time in which a first scan line SL1 is driven may be divided into a first sub-scan on time and a second sub-scan on time. During the first sub-scan on time SSOT1, first demux switches SWS1 of the demultiplexer circuit 120e may couple source channels SC1, SC2, SC3, SC4, SC5 and SC6 to data lines coupled to the sub-pixels R1, G1, B1, R2, G2 and B2 of the first pixel group PG1 in response to a first demux control signal DMCS1. Accordingly, in the first sub-scan on time, the sub-pixels R1, G1, B1, R2, G2 and B2 of the first pixel group PG1 may be driven. Further, during the second sub-scan on time SSOT1, second demux switches SWS2 of the demultiplexer circuit 120e may couple the source channels SC1, SC2, SC3, SC4, SC5 and SC6 to data lines coupled to the sub-pixels R3, G3, B3, R3, G3 and B3 of the second pixel group PG2 in response to a second demux control signal DMCS2. Accordingly, in the second sub-scan on time, the sub-pixels R3, G3, B3, R3, G3 and B3 of the second pixel group PG2 may be driven.
A second scan on time in which a second scan line SL2 is driven may be divided into a third sub-scan on time and a fourth sub-scan on time. During the third sub-scan on time, third demux switches SWS3 of the demultiplexer circuit 120e may couple the source channels SC1, SC2, SC3, SC4, SC5 and SC6 to data lines coupled to five sub-pixels R5, G5, B5, R5 and G5 of the third pixel group PG3 and one sub-pixel B8 of the fourth pixel group PG4 in response to a third demux control signal DMCS3. Accordingly, in the third sub-scan on time, the five sub-pixels R5, G5, B5, R5 and G5 of the third pixel group PG3 and the one sub-pixel B8 of the fourth pixel group PG4 may be driven. Further, during the fourth sub-scan on time, fourth demux switches SWS4 of the demultiplexer circuit 120e may couple the source channels SC1, SC2, SC3, SC4, SC5 and SC6 to data lines coupled to five sub-pixels R7, G7, B7, R8 and G8 of the fourth pixel group PG4 and one sub-pixel B6 of the third pixel group PG3 in response to a fourth demux control signal DMCS4. Accordingly, in the fourth sub-scan on time, the five sub-pixels R7, G7, B7, R8 and G8 of the fourth pixel group PG4 and the one sub-pixel B6 of the third pixel group PG3 may be driven.
Accordingly, since data lines between adjacent sub-pixel columns may be substantially simultaneously driven and all sub-pixels located in twelve sub-pixel columns may be driven by six source channels SC1, SC2, SC3, SC4, SC5 and SC6, a coupling between the data lines may be prevented without a dummy source channel.
A display panel 110f of
A first scan on time in which a first scan line SL1 is driven may be divided into a first sub-scan on time and a second sub-scan on time. During the first sub-scan on time SSOT1, sub-pixels R1, G1, B1, R2, G2 and B2 of the first pixel group PG1 may be driven. During the second sub-scan on time, sub-pixels R3, G3, B3, R3, G3 and B3 of the second pixel group PG2 may be driven.
A second scan on time in which the second scan line SL2 is driven may be divided into a third sub-scan on time and a fourth sub-scan on time. During the third sub-scan on time, five sub-pixels G5, B5, R5, G5 and B6 of the third pixel group PG3 and one sub-pixel R7 of the fourth pixel group PG4 may be driven. Further, during the fourth sub-scan on time, five sub-pixels G7, B7, R8, G8 and B8 of the fourth pixel group PG4 and one sub-pixel R5 of the third pixel group PG3 may be driven.
Unlike a display panel 110a of
Referring to
For example, a (1-1)-th pixel group PG1-1 may include a first R sub-pixel R1, a first G sub-pixel G1, a first B sub-pixel B1 and a first G′ sub-pixel G1′, a (1-2)-th pixel group PG1-2 may include a second R sub-pixel R2, a second G sub-pixel G2, a second B sub-pixel B2 and a second G′ sub-pixel G2′, and a (1-3)-th pixel group PG1-3 may include a third R sub-pixel R3, a third G sub-pixel G3, a third B sub-pixel B3 and a third G′ sub-pixel G3′. Further, a (2-1)-th pixel group PG2-1 may include a fourth B sub-pixel B4, a fourth G′ sub-pixel G4′, a fourth R sub-pixel R4 and a fourth G sub-pixel G4, a (2-2)-th pixel group PG2-2 may include a fifth B sub-pixel B5, a fifth G′ sub-pixel G5′, a fifth R sub-pixel R5 and a fifth G sub-pixel G5, and a (2-3)-th pixel group PG2-3 may include a sixth B sub-pixel B6, a sixth G′ sub-pixel G6′, a sixth R sub-pixel R6 and a sixth G sub-pixel G6.
Further, the display panel 110g may further include a demultiplexer circuit 120g. The demultiplexer circuit 120g may include first demux switches SWS1 that couple source channels SC1, SC2, SC3 and SC4 to data lines coupled to the sub-pixels R1, G1, B1 and G′l of the (1-1)-th pixel group PG1-1 in response to a first demux control signal DMCS1, second demux switches SWS2 that couple the source channels SC1, SC2, SC3 and SC4 to data lines coupled to the sub-pixels R2, G2, B2 and G′2 of the (1-2)-th pixel group PG1-2 in response to a second demux control signal DMCS2, third demux switches SWS3 that couple the source channels SC1, SC2, SC3 and SC4 to data lines coupled to the sub-pixels R3, G3, B3 and G′3 of the (1-3)-th pixel group PG1-3 in response to a third demux control signal DMCS3, fourth demux switches SWS4 that couple the source channels SC1, SC2, SC3 and SC4 to data lines coupled to three sub-pixels B4, G′4 and R4 of the (2-1)-th pixel group PG2-1 and one sub-pixel G6 of the (2-3)-th pixel group PG2-3 in response to a fourth demux control signal DMCS4, fifth demux switches SWS5 that couple the source channels SC1, SC2, SC3 and SC4 to data lines coupled to three sub-pixels B5, G′5 and R5 of the (2-2)-th pixel group PG2-2 and one sub-pixel G4 of the (2-1)-th pixel group PG2-1 in response to a fifth demux control signal DMCS5, and sixth demux switches SWS6 that couple the source channels SC1, SC2, SC3 and SC4 to data lines coupled to three sub-pixels B6, G′6 and R6 of the (2-3)-th pixel group PG2-3 and one sub-pixel G5 of the (2-2)-th pixel group PG2-2 in response to a sixth demux control signal DMCS6.
Accordingly, since data lines between adjacent sub-pixel columns may be substantially simultaneously driven and all sub-pixels located in twelve sub-pixel columns may be driven by four source channels SC1, SC2, SC3 and SC4, a coupling between the data lines may be prevented without a dummy source channel.
A display panel 110h of
Referring to
The processor 1110 may perform various computing functions or tasks. The processor 1110 may be an application processor (AP), a micro processor, a central processing unit (CPU), etc. The processor 1110 may be coupled to other components via an address bus, a control bus, a data bus, etc. Further, in some exemplary embodiments, the processor 1110 may be further coupled to an extended bus such as a peripheral component interconnection (PCI) bus.
The memory device 1120 may store data for operations of the electronic device 1100. For example, the memory device 1120 may include at least one non-volatile memory device such as an erasable programmable read-only memory (EPROM) device, an electrically erasable programmable read-only memory (EEPROM) device, a flash memory device, a phase change random access memory (PRAM) device, a resistance random access memory (RRAM) device, a nano floating gate memory (NFGM) device, a polymer random access memory (PoRAM) device, a magnetic random access memory (MRAM) device, a ferroelectric random access memory (FRAM) device, etc, and/or at least one volatile memory device such as a dynamic random access memory (DRAM) device, a static random access memory (SRAM) device, a mobile dynamic random access memory (mobile DRAM) device, etc.
The storage device 1130 may be a solid state drive (SSD) device, a hard disk drive (HDD) device, a CD-ROM device, etc. The I/O device 1140 may be an input device such as a keyboard, a keypad, a mouse, a touch screen, etc, and an output device such as a printer, a speaker, etc. The power supply 1150 may supply power for operations of the electronic device 1100. The display device 1160 may be coupled to other components through the buses or other communication links.
The display device 1160 may include first and second pixel groups coupled to a first scan line and third and fourth pixel groups coupled to a second scan line. The first and second pixel groups may be sequentially driven during a first scan on time, N−1 sub-pixels in the third pixel group and one sub-pixel in the fourth pixel group may be driven during a first portion of a second scan on time, and N−1 sub-pixels in the fourth pixel group and one sub-pixel in the third pixel group may be driven during a second portion of the second scan on time. Accordingly, in the display device 1160, a coupling between data lines may be prevented without a dummy source channel.
The inventive concepts may be applied any electronic device 1100 including the display device 1160. For example, the inventive concepts may be applied to a television (TV), a digital TV, a 3D TV, a smart phone, a wearable electronic device, a tablet computer, a mobile phone, a personal computer (PC), a home appliance, a laptop computer, a personal digital assistant (PDA), a portable multimedia player (PMP), a digital camera, a music player, a portable game console, a navigation device, etc.
The foregoing is illustrative of exemplary embodiments and is not to be construed as limiting thereof. Although a few exemplary embodiments have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of the present inventive concept. Accordingly, all such modifications are intended to be included within the scope of the present inventive concept as defined in the claims. Therefore, it is to be understood that the foregoing is illustrative of various exemplary embodiments and is not to be construed as limited to the specific exemplary embodiments disclosed, and that modifications to the disclosed exemplary embodiments, as well as other exemplary embodiments, are intended to be included within the scope of the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2018-0090529 | Aug 2018 | KR | national |
This application is a continuation application of U.S. patent application Ser. No. 17/256,238 filed on Dec. 28, 2020, which claims priority to a U.S. national phase application of International Patent Application No. PCT/KR2019/007841 filed on Jun. 27, 2019, which claims priority to Korean Patent Application No. 10-2018-0090529, filed on Aug. 2, 2018, and all the befits accruing therefrom under 35 U.S.C. § 119, the content of which in its entirety is herein incorporated by reference.
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| 20230186814 A1 | Jun 2023 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 17256238 | US | |
| Child | 18106418 | US |
