Patent Grant
12014695
This application is a U.S. National Stage Application under 35 U.S.C. § 371 of International Patent Application No. PCT/CN2021/086200 filed Apr. 9, 2021, which is incorporated by reference in its entirety.
The embodiments of the present disclosure relate to a display driving method, a display driving device, and a display device.
A resolution and a refresh rate are two important parameters used to characterize the performance of a display. On one hand, the higher the resolution of the display, the finer the picture displayed; on the other hand, the higher the refresh rate of the display, the more fluent the picture displayed. With the development of display technology, the resolution of the display continues to increase. For example, displays with various resolutions such as: HD (High Definition), FHD (Full High Definition), UHD (Ultra High Definition), 5K (refers to the line resolution in the display), 8K (refers to the line resolution in the display), etc. have emerged. At the same time, the refresh rate of the display has also been continuously improved. For example, displays with various refresh rates such as: 60 Hz, 120 Hz, 144 Hz, 165 Hz, 240 Hz, etc. have appeared; thus, a better visual experience can be provided for users, especially game players.
At least some embodiments of the present disclosure disclose a display driving method, comprising: when displaying an odd-numbered frame, providing first parity row data of the odd-numbered frame to a display array, to enable a third parity row of the display array to be displayed based on real data of the first parity row data and enable a fourth parity row of the display array to be displayed based on interpolation data of the first parity row data; and when displaying an even-numbered frame, providing second parity row data of the even-numbered frame to the display array, to enable the fourth parity row of the display array to be displayed based on real data of the second parity row data and enable the third parity row of the display array to be displayed based on interpolation data of the second parity row data, any row of the display array has a two-row charging duration before displaying; in a case where the any row of the display array displays based on real data, the two-row charging duration of the any row is used to charge the any row according to the real data corresponding to the any row; in a case where the any row of the display array displays based on interpolation data, a next-row charging duration of the two-row charging duration of the any row is used to charge the any row according to real data corresponding to an adjacent row of the any row, a previous-row charging duration of the two-row charging duration of the any row is used to charge the any row according to real data corresponding to another adjacent row of the any row or is not used to charge the any row; the first parity row data is one of odd-numbered row data and even-numbered row data, and the second parity row data is the other of the odd-numbered row data and the even-numbered row data; and the third parity row is one of an odd-numbered row and an even-numbered row, and the fourth parity row is the other of the odd-numbered row and the even-numbered row.
For example, the display driving method provided by some embodiments of the present disclosure, further comprises: when displaying a plurality of frames, periodically changing a data polarity of each frame, the data polarity comprises a first polarity and a second polarity, and the first polarity is opposite to the second polarity.
For example, in the display driving method provided by some embodiments of the present disclosure, a first minimum change period of the data polarity of each frame is 2 frames; and in the first minimum change period, a data polarity of one frame of the 2 frames is the first polarity, and a data polarity of the other frame of the 2 frames is the second polarity.
For example, in the display driving method provided by some embodiments of the present disclosure, a first minimum change period of the data polarity of each frame is 4n frames, and n is a positive integer greater than or equal to 1; and in the first minimum change period, data polarities of n odd-numbered frame(s) and n even-numbered frame(s) are the first polarity, and data polarities of remaining n odd-numbered frame(s) and remaining n even-numbered frame(s) are the second polarity.
For example, in the display driving method provided by some embodiments of the present disclosure, n is equal to 1 or n is equal to 2.
For example, the display driving method provided by some embodiments of the present disclosure, further comprises: when displaying the plurality of frames, periodically changing a data mapping relationship of each frame, so that within a minimum common period of the data polarity and the data mapping relationship of each frame, each type of data mapping relationship corresponds to both the first polarity and the second polarity.
For example, in the display driving method provided by some embodiments of the present disclosure, in the minimum common period, a count of data mapping relationships, corresponding to the first polarity is equal to a count of data mapping relationships, corresponding to the second polarity.
For example, in the display driving method provided by some embodiments of the present disclosure, the data mapping relationship comprises at least one selected from a group consisting of a first data mapping relationship, a second data mapping relationship, a third data mapping relationship, and a fourth data mapping relationship; the first data mapping relationship comprises: odd-numbered rows of the display array correspond to display real data of odd-numbered row data of one frame, and even-numbered rows of the display array correspond to display interpolation data of the odd-numbered row data of the one frame; the second data mapping relationship comprises: odd-numbered rows of the display array correspond to display real data of even-numbered row data of one frame, and even-numbered rows of the display array correspond to display interpolation data of the even-numbered row data of the one frame; the third data mapping relationship comprises: even-numbered rows of the display array correspond to display real data of odd-numbered row data of one frame, and odd-numbered rows of the display array correspond to display interpolation data of the odd-numbered row data of the one frame; and the fourth data mapping relationship comprises: even-numbered rows of the display array correspond to display real data of even-numbered row data of one frame, and odd-numbered rows of the display array correspond to display interpolation data of the even-numbered row data of the one frame.
For example, in the display driving method provided by some embodiments of the present disclosure, a second minimum change period of each frame of data mapping relationship is 4 frames, the display driving method comprises: when displaying an (x1)-th frame in the second minimum change period, providing odd-numbered row data of the (x1)-th frame to the display array, so that the display array displays according to the first data mapping relationship; when displaying an (x2)-th frame in the second minimum change period, providing even-numbered row data of the (x2)-th frame to the display array, so that the display array displays according to the second data mapping relationship; when displaying an (x3)-th frame in the second minimum change period, providing odd-numbered row data of the (x3)-th frame to the display array, so that the display array displays according to the third data mapping relationship; when displaying an (x4)-th frame in the second minimum change period, providing even-numbered row data of the (x4)-th frame to the display array, so that the display array displays according to the fourth data mapping relationship; a group {x1, x2, x3, x4} is identical to a group {1, 2, 3, 4}.
For example, in the display driving method provided by some embodiments of the present disclosure, any row of the display array further has at least one-row pre-charging duration before displaying, and the at least one-row pre-charging duration is before the two-row charging duration.
At least some embodiments of the present disclosure further disclose a display driving device, comprising: a first driver and a second driver; the first driver is configured to: when displaying an odd-numbered frame, provide first parity row data of the odd-numbered frame to a display array, and when displaying an even-numbered frame, provide second parity row data of the even-numbered frame to the display array; the second driver is configured to: when displaying the odd-numbered frame, enable a third parity row of the display array to be displayed based on real data of the first parity row data and enable a fourth parity row of the display array to be displayed based on interpolation data of the first parity row data; and when displaying the even-numbered frame, enable the fourth parity row of the display array to be displayed based on real data of the second parity row data and enable the third parity row of the display array to be displayed based on interpolation data of the second parity row data; the first driver and the second driver are further configured to: enable any row of the display array have a two-row charging duration before displaying; in a case where the any row of the display array displays based on real data, enable the two-row charging duration of the any row to be used to charge the any row according to the real data corresponding to the any row; in a case where the any row of the display array displays based on interpolation data, enable a next-row charging duration of the two-row charging duration of the any row to be used to charge the any row according to real data corresponding to an adjacent row of the any row and enable a previous-row charging duration of the two-row charging duration of the any row to be used to charge the any row according to real data corresponding to another adjacent row of the any row or be not used to charge the any row; the first parity row data is one of odd-numbered row data and even-numbered row data, and the second parity row data is the other of the odd-numbered row data and the even-numbered row data; and the third parity row is one of an odd-numbered row and an even-numbered row, and the fourth parity row is the other of the odd-numbered row and the even-numbered row.
For example, in the display driving device provided by some embodiments of the present disclosure, the first driver is further configured to: when displaying a plurality of frames, periodically change a data polarity of each frame; the data polarity comprises a first polarity and a second polarity, and the first polarity is opposite to the second polarity.
For example, in the display driving device provided by some embodiments of the present disclosure, a first minimum change period of the data polarity of each frame is 4n frames, and n is a positive integer greater than or equal to 1; and in the first minimum change period, data polarities of n odd-numbered frame(s) and n even-numbered frame(s) are the first polarity, and data polarities of remaining n odd-numbered frame(s) and remaining n even-numbered frame(s) are the second polarity.
For example, in the display driving device provided by some embodiments of the present disclosure, the second driver is further configured to: when displaying the plurality of frames, periodically change a data mapping relationship of each frame, so that within a minimum common period of the data polarity and the data mapping relationship of each frame, each type of data mapping relationship corresponds to both the first polarity and the second polarity.
For example, in the display driving device provided by some embodiments of the present disclosure, in the minimum common period, a count of data mapping relationships, corresponding to the first polarity, is equal to a count of data mapping relationships, corresponding to the second polarity.
For example, in the display driving device provided by some embodiments of the present disclosure, the data mapping relationship comprises at least one selected from a group consisting of a first data mapping relationship, a second data mapping relationship, a third data mapping relationship, and a fourth data mapping relationship; the first data mapping relationship comprises: odd-numbered rows of the display array correspondingly displaying real data of odd-numbered row data of one frame, and even-numbered rows of the display array correspondingly displaying interpolation data of the odd-numbered row data of the one frame; the second data mapping relationship comprises: odd-numbered rows of the display array correspondingly displaying real data of even-numbered row data of one frame, and even-numbered rows of the display array correspondingly displaying interpolation data of the even-numbered row data of the one frame; the third data mapping relationship comprises: even-numbered rows of the display array correspondingly displaying real data of odd-numbered row data of one frame, and odd-numbered rows of the display array correspondingly displaying interpolation data of the odd-numbered row data of the one frame; and the fourth data mapping relationship comprises: even-numbered rows of the display array correspondingly displaying real data of even-numbered row data of one frame, and odd-numbered rows of the display array correspondingly displaying interpolation data of the even-numbered row data of the one frame.
For example, in the display driving device provided by some embodiments of the present disclosure, a second minimum change period of each frame of data mapping relationship is 4 frames, the first driver is configured to: when displaying an (x1)-th frame in the second minimum change period, provide odd-numbered row data of the (x1)-th frame to the display array; when displaying an (x2)-th frame in the second minimum change period, provide even-numbered row data of the (x2)-th frame to the display array; when displaying an (x3)-th frame in the second minimum change period, provide odd-numbered row data of the (x3)-th frame to the display array; when displaying an (x4)-th frame in the second minimum change period, provide even-numbered row data of the (x4)-th frame to the display array; the second driver is configured to: when displaying the (x1)-th frame in the second minimum change period, enable the display array to be displayed according to the first data mapping relationship; when displaying the (x2)-th frame in the second minimum change period, enable the display array to be displayed according to the second data mapping relationship; when displaying the (x3)-th frame in the second minimum change period, enable the display array to be displayed according to the third data mapping relationship; when displaying the (x4)-th frame in the second minimum change period, enable the display array to be displayed according to the fourth data mapping relationship; a group {x1, x2, x3, x4} is identical to a group {1, 2, 3, 4}.
For example, in the display driving device provided by some embodiments of the present disclosure, the second driver is further configured to: enable any row of the display array to have at least one-row pre-charging duration before displaying; and the at least one-row pre-charging duration is before the two-row charging duration.
For example, in the display driving device provided by some embodiments of the present disclosure, the first driver comprises a data driver, and the second driver comprises a gate driver.
At least some embodiments of the present disclosure also provide a display device comprising the display driving device provided by any embodiment of the present disclosure.
For example, in the display device provided by some embodiments of the present disclosure, the display device is a liquid crystal display device.
In order to clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described in the following; it is obvious that the described drawings are only related to some embodiments of the present disclosure and thus are not limitative to the present disclosure.
In order to make objects, technical solutions, and advantages of the embodiments of the present disclosure apparent, the technical solutions of the embodiments of the present disclosure will be described in a clearly and fully understandable way in connection with the drawings related to the embodiments of the present disclosure. Apparently, the described embodiments are just a part but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, those skilled in the art can obtain other embodiment(s), without any inventive work, which should be within the scope of the present disclosure.
Unless otherwise defined, all the technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms “first,” “second,” etc., which are used in the present disclosure, are not intended to indicate any sequence, amount or importance, but distinguish various components. The terms “comprise,” “comprising,” “include,” “including,” etc., are intended to specify that the elements or the objects stated before these terms encompass the elements or the objects and equivalents thereof listed after these terms, but do not preclude the other elements or objects. The phrases “connect”, “connected”, etc., are not intended to define a physical connection or mechanical connection, but may include an electrical connection, directly or indirectly. “On,” “under,” “right,” “left” and the like are only used to indicate relative position relationship, and when the position of the object which is described is changed, the relative position relationship may be changed accordingly.
For example, as shown in
It should be noted that
As shown in
In the liquid crystal display panel, in order to avoid the afterimage phenomenon caused by the destruction of the polarities of the liquid crystal molecules, a display voltage (corresponding to a data signal) at one end of the sub-pixel needs to be continuously changed, is higher or lower than a common voltage at the other end of the sub-pixel, but a voltage difference remains relatively fixed, so that the polarity of each sub-pixel is constantly changing, but the required gray scale is displayed. The relationship between the polarities of adjacent sub-pixels determines a polarity conversion manner. The polarity conversion manner usually includes four types: frame inversion, row inversion, column inversion, and dot inversion; the frame inversion means that all adjacent sub-pixels in each picture have the same polarity; the row inversion and the column inversion mean that the same row or column has the same polarity, and adjacent rows or columns have opposite polarities; the dot inversion means that each sub-pixel and a sub-pixel adjacent to the each sub-pixel have opposite polarities. For the column pixel structure with the data signal column inversion manner, the pre-charging can achieve the charging improvement, because the data signal almost does not need to consider the rising delay, the difference between data signals of two adjacent rows is small, and the image quality is good.
With the advent of high resolution and high refresh rate, the each row of charging duration of the display panel is correspondingly reduced, resulting in insufficient charging of the sub-pixels in each row, furthermore resulting in poor picture quality. For example, taking a resolution of M*N and a refresh rate of K as an example, M represents the number of sub-pixel rows, and N represents the number of sub-pixel columns, and then one-row duration is T=1/K/M. Through calculation, it can be known that for the charging sequence as shown in
At least some embodiments of the present disclosure provide a display driving method. The display driving method includes: when displaying an odd-numbered frame, providing first parity row data of the odd-numbered frame to a display array, to enable a third parity row of the display array to be displayed based on real data of the first parity row data and enable a fourth parity row of the display array to be displayed based on interpolation data of the first parity row data; when displaying an even-numbered frame, providing second parity row data of the even-numbered frame to the display array, to enable the fourth parity row of the display array to be displayed based on real data of the second parity row data and enable the third parity row of the display array to be displayed based on interpolation data of the second parity row data. Any row of the display array has a two-row charging duration before displaying; in a case where the any row of the display array displays based on real data, the two-row charging duration of the any row is used to charge the any row according to the real data corresponding to the any row; in a case where the any row of the display array displays based on interpolation data, a next-row charging duration of the two-row charging duration of the any row is used to charge the any row according to real data corresponding to an adjacent row of the any row, a previous-row charging duration of the two-row charging duration of the any row is used to charge the any row according to real data corresponding to another adjacent row of the any row or is not used to charge the any row; the first parity row data is one of odd-numbered row data and even-numbered row data, and the second parity row data is the other of the odd-numbered row data and the even-numbered row data; the third parity row is one of an odd-numbered row and an even-numbered row, and the fourth parity row is the other of the odd-numbered row and the even-numbered row.
Some embodiments of the present disclosure also provide a display driving device, a display panel, and an electronic device corresponding to the above-mentioned display driving method.
The display driving method provided by some embodiments of the present disclosure, by enabling the display array alternately to be displayed based on the odd-numbered row data or the even-numbered row data of each frame, can achieve the frequency multiplication of the refresh rate of the display device, and can solve the problem of poor image quality of the display device with high resolution and high refresh rate due to insufficient charging, thereby helping to improve the fluency of the image quality and improve the viewing effect.
Several embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that, in order to keep the description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and known parts (elements) may be omitted. When any part (element) of the embodiment of the present disclosure appears in more than one drawing, the part (element) is represented by the same or similar reference numeral in each drawing.
Step S100: when displaying an odd-numbered frame, providing first parity row data of the odd-numbered frame to a display array, to enable a third parity row of the display array to be displayed based on real data of the first parity row data and enable a fourth parity row of the display array to be display based on interpolation data of the first parity row data;
Step S200: when displaying an even-numbered frame, providing second parity row data of the even-numbered frame to the display array, to enable the fourth parity row of the display array to be displayed based on real data of the second parity row data and enable the third parity row of the display array to be displayed based on interpolation data of the second parity row data.
For example, the display array can refer to the pixel array in the display device shown in
For example, any row of the display array has a two-row charging duration before displaying; in a case where the any row of the display array displays based on real data, the two-row charging duration of the any row is used to charge the any row according to the real data corresponding to the any row; in a case where the any row of the display array displays based on interpolation data, a next-row charging duration of the two-row charging duration of the any row is used to charge the any row according to real data corresponding to an adjacent row of the any row, a previous-row charging duration of the two-row charging duration of the any row is used to charge the any row according to real data corresponding to another adjacent row of the any row or is not used to charge the any row.
For example, the first parity row data is one of odd-numbered row data and even-numbered row data, and the second parity row data is the other of the odd-numbered row data and the even-numbered row data.
For example, the third parity row is one of an odd-numbered row and an even-numbered row, and the fourth parity row is the other of the odd-numbered row and the even-numbered row.
For example, in some embodiments, during the display process, when the odd-numbered frame is displayed, the odd-numbered row data of the odd-numbered frame can be provided to the display array; at the same time, when the even-numbered frame is displayed, the even-numbered row data of the even-numbered frame is provided to the display array. For example, in other embodiments, during the display process, when the odd-numbered frame is displayed, the even-numbered row data of the odd-numbered frame can be provided to the display array; at the same time, when the even-numbered frame is displayed, the odd-numbered row data of the even-numbered frame is provided to the display array.
For example, during the display process, each row (physical row) of the display array and each row of data (timing-sequence row) of a frame may have at least one of the following four data mapping relationships (i.e., a first data mapping relationship, a second data mapping relationship, a third data mapping relationship, and a fourth data mapping relationship). It should be noted that, in the embodiments of the present disclosure, if any row of the display array displays after being charged for two-row duration according to data of a certain row, it is considered that the any row of the display array corresponds to the certain row of data, and the any row of the display array displays real data; otherwise, the any row of the display array displays interpolation data.
For example, the first data mapping relationship includes: odd-numbered rows of the display array correspondingly displaying real data of odd-numbered row data of one frame, and even-numbered rows of the display array correspondingly displaying interpolation data of the odd-numbered row data of the one frame. For example, as shown in
For example, the second data mapping relationship comprises: the odd-numbered rows of the display array correspondingly displaying real data of even-numbered row data of one frame, and the even-numbered rows of the display array correspondingly displaying interpolation data of the even-numbered row data of the one frame. For example, as shown in
For example, the third data mapping relationship comprises: the even-numbered rows of the display array correspondingly displaying real data of odd-numbered row data of one frame, and the odd-numbered rows of the display array correspondingly displaying interpolation data of the odd-numbered row data of the one frame. For example, as shown in
For example, the fourth data mapping relationship comprises: the even-numbered rows of the display array correspondingly displaying real data of even-numbered row data of one frame, and the odd-numbered rows of the display array correspondingly displaying interpolation data of the even-numbered row data of the one frame. For example, as shown in
It should be understood that, in the embodiments of the present disclosure, for a case that the first row of the display array only displays after being charged for one-row duration (that is, the next-row charging duration of the two-row charging duration) according to the real data corresponding to the next row of the first row, it is also considered that the first row of the display array displays the interpolated data of the even-numbered row (that is, the second row) data.
For, for example, a display device with 8 k and 120 Hz, adopting the above display driving method can ensure that the odd-numbered rows or the even-numbered rows are fully charged during the display process; meanwhile, due to the visual inertia of the human eye, the display effect is almost the same as the display effect of a display device with 8K and 60 Hz. Therefore, the above display driving method can achieve an improvement in the refresh rate, and can provide a better gaming experience for game players (requiring a high refresh rate).
For liquid crystal display devices, in order to avoid the afterimage phenomenon caused by the polarization of the liquid crystal molecules, a display voltage (corresponding to the data signal) at one end of the sub-pixel needs to be continuously changed and is higher or lower than a common voltage at the other end of the sub-pixel, but a voltage difference remains relatively constant, so that the polarity of each sub-pixel is constantly changing, but the required gray scale is displayed. For example, in some embodiments, the above display driving method may further include: when displaying a plurality of frames, periodically changing a data polarity of each frame. For example, the data polarity includes a first polarity and a second polarity, and the first polarity is opposite to the second polarity. For example, the first polarity may be a positive polarity, and corresponds to a situation where the voltage of the data signal is higher than the common voltage; and the second polarity may be a negative polarity, and corresponds to a situation where the voltage of the data signal is lower than the common voltage. Of course, the first polarity can also be a negative polarity, and the second polarity can also be a positive polarity.
For example, in some embodiments, the data driver in the display device may provide data signals of different polarities according to the positive or negative (or high or low) of the polarity signal POL (referred to as “POL signal”).
For example, in some embodiments, the above display driving method may further include: when displaying the plurality of frames, periodically changing a data mapping relationship of each frame. For example, a minimum change period (i.e., a second minimum change period) of the data mapping relationship of each frame may be 2 frames or 4 frames, and the embodiments of the present disclosure include but are not limited to this case. For example, in some embodiments, the data mapping relationship of each frame may be changed periodically, so that within a minimum common period of the data polarity and the data mapping relationship of each frame, ach type of data mapping relationship corresponds to both the first polarity and the second polarity, so as to better avoid the polarization of the liquid crystal molecules and avoid the afterimage phenomenon. For example, in some embodiments, in the minimum common period, a count of data mapping relationships, corresponding to the first polarity is equal to a count of data mapping relationships, corresponding to the second polarity, so as to better avoid the polarization of the liquid crystal molecules and avoid the afterimage phenomenon.
For example, in some embodiments, a minimum change period (i.e., a first minimum change period) of the data polarity of each frame is 2 frames; in the first minimum change period, the data polarity of one frame is the first polarity, and the data polarity of the other frame is the second polarity. For example, as shown in
For example, in the embodiment shown in
For example, in the embodiment shown in
For example, in other embodiments, the first minimum change period of the data polarity of each frame is 4n frames, n is a positive integer greater than or equal to 1; in the first minimum change period, data polarities of n odd-numbered frame(s) and n even-numbered frame(s) are the first polarity, and data polarities of remaining n odd-numbered frame(s) and remaining n even-numbered frame(s) are the second polarity. For example, n is equal to 1 or n is equal to 2; it should be noted that the embodiments of the present disclosure include but are not limited to this case.
For example, as shown in
For example, in the embodiment shown in
For example, in a case where the first minimum change period is 8 frames (i.e., n=1), as shown in
For example, in the embodiment shown in
It should be understood that, in the embodiments of the present disclosure, if a y1-th (y1 is a positive integer) row of the display array always displays the real data, and a y2-th (y2 is a positive integer, and y2 is not equal to y1) row of the display array always displays the interpolated data, because the distribution of the interpolated data is different from the distribution of the real data (a probability of interpolated data getting the intermediate value is greater than a probability of real data getting the intermediate value, and a probability of interpolating data getting the maximum value and the minimum value is greater than a probability of real data getting the maximum value and the minimum value), which may lead to a phenomenon of uneven display. For example, in some embodiments, in order to avoid the above-mentioned phenomenon of uneven display, the second minimum change period of the data mapping relationship of each frame may be set to 4 frames. In this case, the display driving method may include: when displaying an (x1)-th frame in the second minimum change period, providing odd-numbered row data of the (x1)-th frame to the display array, so that the display array displays according to the first data mapping relationship; when displaying an (x2)-th frame in the second minimum change period, providing even-numbered row data of the (x2)-th frame to the display array, so that the display array displays according to the second data mapping relationship; when displaying an (x3)-th frame in the second minimum change period, providing odd-numbered row data of the (x3)-th frame to the display array, so that the display array displays according to the third data mapping relationship; when displaying an (x4)-th frame in the second minimum change period, providing even-numbered row data of the (x4)-th frame to the display array, so that the display array displays according to the fourth data mapping relationship; a group {x1, x2, x3, x4} is identical with a group {1, 2, 3, 4}, that is, the values of x1, x2, x3, and x4 are respectively elements in the group {1, 2, 3, 4}, and the values of x1, x2, x3, and x4 are different from each other. For example, in some embodiments (referring to the embodiment shown in
For example, in some embodiments, as shown in
It should be understood that in the display driving method provided by the embodiment of the present disclosure, the refresh rate can be improved and the afterimage phenomenon can be avoided by coordinating the following three selections or settings: 1) when displaying respective frames, choosing to provide the odd-numbered row data or the even-numbered row data to the display array; 2) setting the change order of the data polarities of the respective frames; 3) selecting one or more of the aforementioned four data mapping relationships, and setting the change order of various data mapping relationships when selecting a plurality of data mapping relationships.
Some embodiments of the present disclosure also provide a display driving device.
For example, the first driver 810 is configured to: when displaying an odd-numbered frame, provide first parity row data of the odd-numbered frame to a display array, and when displaying an even-numbered frame, provide second parity row data of the even-numbered frame to the display array; the second driver 820 is configured to: when displaying the odd-numbered frame, enable a third parity row of the display array to be displayed based on real data of the first parity row data and enable a fourth parity row of the display array to be displayed based on interpolation data of the first parity row data; and when displaying the even-numbered frame, enable the fourth parity row of the display array to be displayed based on real data of the second parity row data and enable the third parity row of the display array to be displayed based on interpolation data of the second parity row data; the first driver 810 and the second driver 820 are further configured to: enable any row of the display array have a two-row charging duration before displaying; in a case where the any row of the display array displays based on real data, enable the two-row charging duration of the any row to be used to charge the any row according to the real data corresponding to the any row; in a case where the any row of the display array displays based on interpolation data, enable a next-row charging duration of the two-row charging duration of the any row to be used to charge the any row according to real data corresponding to an adjacent row of the any row and enable a previous-row charging duration of the two-row charging duration of the any row to be used to charge the any row according to real data corresponding to another adjacent row of the any row or be not used to charge the any row. For example, the first parity row data is one of odd-numbered row data and even-numbered row data, and the second parity row data is the other of the odd-numbered row data and the even-numbered row data. Thus, the display driving device 800 can be used to implement the aforementioned display driving method.
For example, in some embodiments, the first driver 810 is further configured to: when displaying a plurality of frames, periodically change a data polarity of each frame. For example, the data polarity comprises a first polarity and a second polarity, and the first polarity is opposite to the second polarity. Therefore, the display driving device 800 can prevent the polarization of the liquid crystal molecules from causing the afterimage phenomenon.
For example, in some embodiments (referring to the embodiment shown in
For example, in some embodiments, the second driver is further configured to: when displaying the plurality of frames, periodically change a data mapping relationship of each frame, so that within a minimum common period of the data polarity and the data mapping relationship of each frame, each type of data mapping relationship corresponds to both the first polarity and the second polarity. For example, in some embodiments, within the minimum common period, a count of data mapping relationships, corresponding to the first polarity is equal to a count of data mapping relationships, corresponding to the second polarity. Therefore, the display driving device 800 can further prevent the polarization of the liquid crystal molecules from causing an afterimage phenomenon.
For example, in some embodiments, the data mapping relationship comprises a first data mapping relationship, a second data mapping relationship, a third data mapping relationship, and a fourth data mapping relationship. For example, for the specific details of the four types of data mapping relationships, reference may be made to the aforementioned related descriptions, which will not be repeated here.
For example, in some embodiments, the second minimum change period of the data mapping relationship of each frame is 4 frames. In this case, the first driver 810 is configured to: when displaying an (x1)-th frame in the second minimum change period, provide odd-numbered row data of the (x1)-th frame to the display array; when displaying an (x2)-th frame in the second minimum change period, provide even-numbered row data of the (x2)-th frame to the display array; when displaying an (x3)-th frame in the second minimum change period, provide odd-numbered row data of the (x3)-th frame to the display array; when displaying an (x4)-th frame in the second minimum change period, provide even-numbered row data of the (x4)-th frame to the display array; the second driver 820 is configured to: when displaying the (x1)-th frame in the second minimum change period, enable the display array to be displayed according to the first data mapping relationship; when displaying the (x2)-th frame in the second minimum change period, enable the display array to be displayed according to the second data mapping relationship; when displaying the (x3)-th frame in the second minimum change period, enable the display array to be display according to the third data mapping relationship; when displaying the (x4)-th frame in the second minimum change period, enable the display array to be displayed according to the fourth data mapping relationship. For example, a group {x1, x2, x3, x4} is identical with a group {1, 2, 3, 4}, that is, the values of x1, x2, x3, and x4 are respectively elements in the group {1, 2, 3, 4}, and the values of x1, x2, x3, and x4 are different from each other. For example, in some embodiments (referring to the embodiment shown in
For example, in some embodiments, the second driver 820 is further configured to: enable any row of the display array to have at least one-row pre-charging duration before displaying. The at least one-row pre-charging duration is before the two-row charging duration. For example, for the column pixel structure with the data signal column inversion manner, the pre-charging can achieve the charging improvement, because the data signal almost does not need to consider the rising delay, the difference between data signals of two adjacent rows is small, and the image quality is good.
For example, the first driver 810 may be implemented as the aforementioned data driving circuit 30 (data driver). For example, the first driver 810 may provide data signals as required. For example, when displaying each frame, the odd-numbered row data or the even-numbered row data may be provided to the display array according to the blanking condition of the TP signal. For example, the first driver 810 may also adjust the data polarity of the data signal as required. For example, when displaying each frame, the data polarity of the data signal may be adjusted according to the polarity of the POL signal. Thus, the first driver 810 can periodically change the data polarity of each frame.
For example, the second driver 820 may be implemented as the aforementioned gate driving circuit 20 (gate driver). For example, the second driver 820 can provide gate signals as required, for example, when displaying each frame, the delay time of the gate signal of the first row relative to the frame start signal STV and the delay time between the gate signals of the respective rows can be controlled. Thus, the second driver 820 can periodically change the data mapping relationship of each frame.
For example, the first driver 810 and the second driver 820 can cooperatively control the charging duration of each row of the display array, for example, each row of the display array can have two-row charging duration (that is, the charging duration is time for two rows). For example, on this basis, the second driver 820 can also adjust the pre-charging duration of each row of the display array by controlling the duration of each gate signal. For specific details, reference may be made to the aforementioned related description, and similar portions will not be repeated here.
It should be understood that, in the display driving device 800 provided by the embodiment of the present disclosure, the refresh rate can be improved and the afterimage phenomenon can be avoided by performing the following settings through the first driver 810 and the second driver 82: 1) when displaying respective frames, selectively providing the odd-numbered row data or the even-numbered row data to the display array through the first driver 810; 2) setting the change order of the data polarities of the respective frames through the first driver 810; 3) selecting one or more of the aforementioned four data mapping relationships and setting the change order of various data mapping relationships when selecting a plurality of data mapping relationships through the second driver 820.
For the technical effects of the display driving device provided by the embodiment of the present disclosure, reference may be made to the corresponding description of the display driving method in the above-mentioned embodiments, and similar portions will not be repeated here.
Some embodiments of the present disclosure also provide a display device.
For example, the display device 900 may be implemented as the display device shown in
For example, in some embodiments, the display device 900 may be a liquid crystal display device, that is, the display panel 901 is a liquid crystal display panel. It should be noted that the present disclosure includes but is not limited to this.
It should be noted that the display device in the embodiment can be any product or component with a display function such as a display, an electronic paper display device, a mobile phone, a tablet computer, a notebook computer, a digital photo frame, a navigator, etc., and the embodiments of the present disclosure do not limit this.
It should be noted that for the sake of clarity and conciseness, the entire structure of the display device 900 is not shown. In order to implement the necessary functions of the display device, those skilled in the art can set other structures not shown according to specific application scenarios, and the embodiments of the present disclosure are not limited in this aspect.
For the technical effects of the display device provided by the embodiment of the present disclosure, reference may be made to the corresponding description of the display driving device in the above-mentioned embodiments, and similar portions will not be repeated here.
The following should be noted:
What have been described above merely are exemplary embodiments of the present disclosure, and not intended to define the scope of the present disclosure, and the scope of the present disclosure is determined by the appended claims.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/086200 | 4/9/2021 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2022/213366 | 10/13/2022 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 20160155405 | Kim | Jun 2016 | A1 |
| 20160180789 | Hur | Jun 2016 | A1 |
| 20170243557 | Yoon | Aug 2017 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| 20230360615 A1 | Nov 2023 | US |
