The present disclosure relates to the field of display technologies, and in particular to a display panel and a display device.
In existing display panels, a plurality of sub-pixels generally correspond to a plurality of pixel drive circuits. Each sub-pixel is individually driven by a corresponding pixel drive circuit to realize a light-emitting control of the pixels. In this way, there is a driving difference between each sub-pixel and another adjacent sub-pixel during display, which makes it difficult to achieve optimal display uniformity when the display panel requires high resolution, and therefore further improvement is needed.
Embodiment of the present disclosure provide a display panel and a display device, which can improve a display uniformity, thereby improving a display quality of the display panel.
An embodiment of the present disclosure provides a display panel, including a plurality of pixel units and a plurality of pixel drive circuits. Each of the pixel units includes a plurality of pixels. At least one of the pixel drive circuits includes two different types of transistors, and at least one of the pixel drive circuits is configured to respond to a light-emitting control signal to simultaneously drive two adjacent sub-pixels in the same pixel or two adjacent sub-pixels in two adjacent pixels.
The present disclosure also provides a display panel, including a plurality of pixels and a plurality of pixel drive circuits. The plurality of pixels include a first sub-pixel and a second sub-pixel adjacent to the first sub-pixel, the first sub-pixel includes a first light-emitting device, and the second sub-pixel includes a second light-emitting device. At least one of the pixel drive circuits includes two different types of transistors, the pixel drive circuits is configured to respond to a light-emitting control signal to simultaneously drive two adjacent sub-pixels in the same pixel or two adjacent sub-pixels in two adjacent pixels. One of the pixel drive circuits includes a first transistor and an eighth transistor. The first transistor is configured to provide a first drive current to drive the first sub-pixel or the second sub-pixel to emit light. The eighth transistor is configured to provide a second drive current to drive the first sub-pixel or the second sub-pixel to emit light.
The present disclosure also provides a display device including the above-mentioned display panel.
In comparison with the prior art, the embodiments of the present disclosure provide the display panel and display device, where the display panel includes the plurality of pixel units and the plurality of pixel drive circuits. Each of the pixel units includes the plurality of pixels. At least one of the pixel drive circuits includes two different types of transistors, and at least one of the pixel drive circuits is configured to respond to the light-emitting control signal to simultaneously drive two adjacent sub-pixels in the same pixel or two adjacent sub-pixels in two adjacent pixels. Therefore, a display uniformity is increased, and a display quality of the display panel is improved.
In order to make the objectives, technical solutions, and effects of the present disclosure more clear and specific, the present disclosure is described in further detail below with reference to embodiments in accompanying with drawings. It should be understood that the specific embodiments described herein are merely for explaining the present disclosure and are not intended to limit the present disclosure.
Specifically, please refer to
An embodiment of the present disclosure provides a display panel, including a plurality of pixel units 100 and a plurality of pixel drive circuits. Each of the pixel units 100 includes a plurality of pixels 1001. At least one of the pixel drive circuits includes two different types of transistors, and at least one of the pixel drive circuits is configured to respond to a light-emitting control signal EM to simultaneously drive two adjacent sub-pixels in the same pixel 1001 or two adjacent sub-pixels in two adjacent pixels 1001. Therefore, a display uniformity is increased, and a display quality of the display panel is improved.
Specifically, please refer to
Furthermore, the pixel drive circuit is also configured to drive two adjacent sub-pixels in two adjacent pixels 1001. Specifically, please refer to
Please refer to
Similarly, in the first direction (i.e., the y-direction), the first sub-pixel 1011 is arranged adjacent to the fourth sub-pixel 1022, and the second sub-pixel 1012 is arranged adjacent to the third sub-pixel 1021. At least one of the pixel drive circuits is configured to respond to a light-emitting control signal EM to simultaneously drive the first sub-pixel 1011 and the fourth sub-pixel 1022. At least one of the pixel drive circuits is configured to respond to a light-emitting control signal EM to simultaneously drive the second sub-pixel 1012 and the third sub-pixel 1021.
In addition, in the first direction (the y-direction), the first sub-pixel 1011 to the fourth sub-pixel 1022 may also be arranged in sequence. Specifically, the first sub-pixel 1011 is adjacent to the second sub-pixel 1012, the third sub-pixel 1021 is adjacent to the second sub-pixel 1012, and the fourth sub-pixel 1022 is adjacent to the third sub-pixel 1021. At least one of the pixel drive circuits is configured to respond to a light-emitting control signal EM to simultaneously drive the second sub-pixel 1012 and the third sub-pixel 1021. As shown in
Colors of the first sub-pixel 1011, the second sub-pixel 1012, and the third sub-pixel 1021 are different, so that the display panel can realize color display through the first pixel 101 and the second pixel 102. The colors of the first sub-pixel 1011 to the fourth sub-pixel 1022 include at least one of red, green, blue, and white. Furthermore, the first sub-pixel 1011 is a red sub-pixel, the second sub-pixel 1012 is a blue sub-pixel, and the third sub-pixel 1021 is a green sub-pixel. Furthermore, the fourth sub-pixel 1022 has the same color as one of the first sub-pixel 1011, the second sub-pixel 1012, or the third sub-pixel 1021. It is understandable that the fourth sub-pixel 1022 may also be a sub-pixel of other colors, which will not be repeated here.
In addition, other pixels can be added to the pixel units 100 to realize the color display of the display panel and improve the display quality of the display panel. Specifically, referring to
Specifically, referring to
Furthermore, in the first direction (y-direction), the first sub-pixel 1011 is adjacent to the third sub-pixel 1021, the second sub-pixel 1012 is adjacent to the fourth sub-pixel 1022, and the fifth sub -pixel 1031 is adjacent to the seventh sub-pixel 1041, and the sixth sub-pixel 1032 is adjacent to the eighth sub-pixel 1042. In the second direction (x-direction), the first sub-pixel 1011, the second sub-pixel 1012, the fifth sub-pixel 1031, and the sixth sub-pixel 1032 are arranged in sequence, and third sub-pixel 1021, the fourth sub-pixel 1022, the seventh sub-pixel 1041, and the eighth sub-pixel 1042 are arranged in sequence. At least one of the pixel drive circuits is configured to simultaneously drive the first sub-pixel 1011 and the third sub-pixel 1021, and at least one of the pixel drive circuits is configured to simultaneously drive the sixth sub-pixel 1032 and the eighth sub-pixel 1042, at least one of the pixel drive circuits is configured to simultaneously drive the second sub-pixel 1012 and the fourth sub-pixel 1022, and at least one of the pixel drive circuits is configured to simultaneously drive the fifth sub-pixel 1031 and the seventh sub-pixel 1041. Alternatively, at least one of the pixel drive circuits is configured to simultaneously drive the second sub-pixel 1012 and the fifth sub-pixel 1031, and at least one of the pixel drive circuits is configured to drive the fourth sub-pixel 1022 and the seventh sub-pixel 1041 simultaneously.
Colors of the first sub-pixel 1011 to the eighth sub-pixel 1042 include at least one of red, green, blue, and white. Furthermore, the first sub-pixel 1011 and the second sub-pixel 1012 are red sub-pixels, the third sub-pixel 1021 and the fourth sub-pixel 1022 are blue sub-pixels, the fifth sub-pixel 1031, the sixth sub-pixel 1032, the seventh sub-pixel 1041, and the eighth sub-pixel 1042 are green sub-pixels.
Similarly, referring to
Furthermore, in the first direction (y-direction), the second sub-pixel 1012 is adjacent to the third sub-pixel 1021, the first sub-pixel 1011 is adjacent to the fourth sub-pixel 1022, the fifth sub -pixel 1031 is adjacent to the eighth sub-pixel 1042, and the sixth sub-pixel 1032 is adjacent to the seventh sub-pixel 1041. In the second direction (x-direction), the second sub-pixel 1012, the first sub-pixel 1011, the fifth sub-pixel 1031, and the sixth sub-pixel 1032 are arranged in sequence, and the third sub-pixel 1021, the fourth sub-pixel 1022, the eighth sub-pixel 1042, and the seventh sub-pixel 1041 are arranged in sequence. At least one of the pixel drive circuits is configured to simultaneously drive the first sub-pixel 1011 and the second sub-pixel 1012. At least one of the pixel drive circuits is configured to simultaneously drive the third sub-pixel 1021 and the fourth sub-pixel 1022. At least one of the pixel drive circuits is configured to simultaneously drive the fifth sub-pixel 1031 and the eighth sub-pixel 1042. At least one of the pixel drive circuits is configured to simultaneously drive the sixth sub-pixel 1032 and the seventh sub-pixel 1041.
Colors of the first sub-pixel 1011 to the eighth sub-pixel 1042 include at least one of red, green, blue, and white. Furthermore, the first sub-pixel 1011 is a blue sub-pixel, the second sub-pixel 1012 is a red sub-pixel, and the third sub-pixel 1021 is a green sub-pixel. Furthermore, the fifth sub-pixel 1031 has the same color as one of the first sub-pixel 1011 and the second sub-pixel 1012, and the sixth sub-pixel 1032 has the same color as the other one of the first sub-pixel 1011 and the second sub-pixel 1012. Furthermore, colors of the third sub-pixel 1021 and the fourth sub-pixel 1022 are the same, and colors of the third pixel 103 and the fourth pixel 104 are the same.
Similarly, referring to
Furthermore, in the first direction (y-direction), the first sub-pixel 1011 is adjacent to the fourth sub-pixel 1022, the second sub-pixel 1012 is adjacent to the third sub-pixel 1021, the sixth sub-pixel 1032 is adjacent to the eighth sub-pixel 1042, and the seventh sub-pixel 1041 is adjacent to the fifth sub-pixel 1031. In the second direction (x-direction), the first sub-pixel 1011, the second sub-pixel 1012, the eighth sub-pixel 1042, and the seventh sub-pixel 1041 are arranged in sequence, and the fourth sub-pixel 1022, the third sub-pixel 1021, the sixth sub-pixel 1032, and the fifth sub-pixel 1031 are arranged in sequence. At least one of the pixel drive circuits is configured to simultaneously drive the first sub-pixel 1011 and the fourth sub-pixel 1022. At least one of the pixel drive circuits is configured to simultaneously drive the seventh sub-pixel 1041 and the fifth sub-pixel 1031. At least one of the pixel drive circuits is configured to simultaneously drive the second sub-pixel 1012 and the eighth sub-pixel 1042. At least one of the pixel drive circuits is configured to simultaneously drive the sixth sub-pixel 1032 and the third sub-pixel 1021.
Furthermore, colors of the first sub-pixel 1011 to the eighth sub-pixel 1042 include at least one of red, green, blue, and white. Furthermore, the first sub-pixel 1011 is a red sub-pixel, the second sub-pixel 1012 is a blue sub-pixel, and the third sub-pixel 1021 is a green sub-pixel. Furthermore, the fifth sub-pixel 1031 has the same color as one of the first sub-pixel 1011 and the second sub-pixel 1012, and the sixth sub-pixel 1032 has the same color as the other one of the first sub-pixel 1011 and the second sub-pixel 1012. Furthermore, colors of the third sub-pixel 1021 and the fourth sub-pixel 1022 are the same, and colors of the third pixel 103 and the fourth pixel 104 are the same.
It can be understood that the first direction and the second direction are not limited to crossing vertically. The first direction and the second direction can be replaced with each other. Number of the sub-pixels in the first pixel 101 to the fourth pixel 104 is not limited to two. As shown in
Positions of the adjacent sub-pixels in each of the pixels 1001 can be adjusted according to actual needs, and the arrangements in
Referring to
Similarly, each of two longitudinally adjacent pixel units 100a and 100c has a plurality of pixels 1001. The pixels 1001 located in the pixel unit 100a and the pixels 1001 located in the pixel unit 100c are arranged in a mirror image with a gap 100e between the pixel units 100a and 100c as a symmetry axis. Furthermore, the plurality of sub-pixels located in the pixel unit 100a and the plurality of sub-pixels located in the pixel unit 100c are arranged in a mirror image with the gap 100e as the symmetry axis.
In addition, the plurality of pixels 1001 in the pixel units 100a, 100b, and 100c can be arranged in the same arrangement or other arrangements, which will not be repeated here.
Referring to
Specifically, referring to
The switch module includes a first switch module 201 and a second switch module 301. The first switch module 201 includes a first switch transistor T15 and a second switch transistor T16. One of a source or a drain of the first switch transistor T15 is connected to a first voltage terminal Vdd, and the other of the source or the drain of the first switch transistor T15 is connected to one of a source or a drain of the first drive transistor T11. One of a source or a drain of the second switch transistor T16 is connected to the other of the source or the drain of the first drive transistor T11, and the other of the source or the drain of the second switch transistor T16 is connected to an anode of the first light-emitting device D1. The first switch transistor T15 and the second switch transistor T16 are configured to control the first light-emitting device D1 to emit light in response to the light-emitting control signal EM.
The second switch module 301 includes a third switch transistor T25 and a fourth switch transistor T26. One of a source or a drain of the third switch transistor T25 is connected to the first voltage terminal Vdd, and the other of the source or the drain of the third switch transistor T25 is connected to one of a source or a drain of the second drive transistor T21. One of a source or a drain of the fourth switch transistor T26 is connected to the other of the source or the drain of the second drive transistor T21, and the other of the source or the drain of the fourth switch transistor T26 is connected to an anode of the second light-emitting device D2. The third switch transistor T25 and the fourth switch transistor T26 are configured to control the second light-emitting device D2 to emit light in response to the light-emitting control signal EM, so as to realize simultaneous driving of the first sub-pixel 1011 and the second sub-pixel 1012 under a control of the same light-emitting control signal EM.
Referring to
The second sub-circuit 300 also includes a second compensation module 302. The second compensation module 302 includes a second initialization transistor T22 and a second compensation transistor T23 that are different in type from the second drive transistor T21. The second initialization transistor T22 is configured to respond to the first scan signal Scan1 and transmit the initialization signal VI to a gate of the second drive transistor T21 to initialize a gate voltage of the second drive transistor T21. The second compensation transistor T23 is configured to compensate a threshold voltage of the second drive transistor T21 in response to the compensation control signal CS.
Furthermore, the first drive transistor T11 and the second drive transistor T21 are silicon transistors or oxide transistors, the first initialization transistor T12, the first compensation transistor T13, the second initialization transistor T22, and the second compensation transistor T23 are silicon transistors or oxide transistors. Furthermore, the first drive transistor T11 and the second drive transistor T21 are silicon transistors, the first initialization transistor T12, the first compensation transistor T13, the second initialization transistor T22, and the second compensation transistor T23 are oxide transistors such that an influence of one of the source or the drain of the first drive transistor T11 on the gate of the first drive transistor T11 is reduced, and an influence of one of the source or the drain of the second drive transistor T21 on the gate of the second drive transistor T21 is reduced, which is beneficial to the display panel to realize ultra-low frequency and ultra-low power consumption.
The first drive transistor T11, the second drive transistor T21, the first initialization transistor T12, the first compensation transistor T13, the second initialization transistor T22, and the second compensation transistor T23 are at least one of a P-type transistor or an N-type transistor.
Referring to
Specifically, referring to
Since the scan signal must be converted by a gate driving circuit, etc., compared to using the scan signal to control the data transistor, using the demultiplexing signal to control the data transistor is more conducive to a realization of ultra-high frequency in the display panel. The first demultiplexing signal Demux1 and the second demultiplexing signal Demux2 may have the same timing or different timings, so as to implement time-sharing writing of the data signal.
Referring to
Referring to
Referring to
Specifically, taking the first sub-pixel 1011 including a first light-emitting device D1 and the second sub-pixel 1012 including a second light-emitting device D2 as an example, the reset module includes a first reset module 205 and a second reset module 305. The first reset module 205 includes a first reset transistor T17. One of a source or a drain of the first reset transistor T17 is connected to an anode of the first light-emitting device D1. The first reset transistors T17 is configured to transmit the reset signal VI to the anode of the first light-emitting device D1 in response to the second scan signal Scan2.
The second reset module 305 includes a second reset transistor T27. One of a source or a drain of the second reset transistor T27 is connected to an anode of the second light-emitting device D2. The second reset transistor T27 is configured to transmit the reset signal VI to the anode of the second light-emitting device D2 in response to the second scan signal Scan2.
Referring to
In an initialization stage t1, the first scan signal Scan1, the second scan signal Scan2, and the light-emitting control signal EM are at a high level, and the compensation control signal CS is at a low level. The first initialization transistor T12 and the second initialization transistor T22 are turned on. The reset signal VI is transmitted to the gate of the first drive transistor T11 (node Q1) and the gate of the second drive transistor T21 (node Q2) to initialize the gate voltages of the first drive transistor T11 and the second drive transistor T21.
In the data writing stage t2, the first scan signal Scan1, the second scan signal Scan2 are at a low level, and the light-emitting control signal EM and the compensation control signal CS are at a high level. The first reset transistor T17 and the second reset transistor T27 are turned on in response to the second scan signal Scan2. The reset signal VI is transmitted to the anodes of the first light-emitting device D1 and the second light-emitting device D2 to initialize anode voltages of the first light-emitting device D1 and the second light-emitting device D2.
In the pixel drive circuit shown in
In the pixel drive circuit shown in
In a first data writing stage, the first demultiplexing signal Demux1 is at a low level, and the second demultiplexing signal Demux2 is at a high level. The first compensation transistor T13 and the second compensation transistor T23 are turned on in response to the compensation control signal CS. The first data transistor T14 is turned on in response to the first demultiplexing signal Demux1. The data signal Vdata is transmitted to the A1 node. The first compensation transistor T13 is turned on so that the data signal Vdata having the function of compensating the threshold voltage is transmitted to the gate of the first drive transistor T11 to compensate the threshold voltage of the first drive transistor T11.
In a second data writing stage, the first demultiplexing signal Demux1 is at a high level, and the second demultiplexing signal Demux2 is at a low level. The first compensation transistor T13 and the second compensation transistor T23 are turned on in response to the compensation control signal CS. The second data transistor T24 is turned on in response to the second demultiplexing signal Demux2. The data signal Vdata is transmitted to the A2 node. The second compensation transistor T23 is turned on so that the data signal Vdata having the function of compensating the threshold voltage is transmitted to the gate of the second drive transistor T21 to compensate the threshold voltage of the second drive transistor T21.
In order to ensure that the data signal Vdata can be transmitted to the A1 node and the A2 node in a time-sharing manner during the data writing stage t2, frequencies of the first demultiplexing signal Demux1 and the second demultiplexing signal Demux2 are greater than or equal to twice a frequency of the compensation control signal CS to ensure enough data writing time. Timings of the first demultiplexing signal Demux1 and the second demultiplexing signal Demux2 may be the same or different, that is, the frequency and phase of the first demultiplexing signal Demux1 and the second demultiplexing signal Demux2 may be the same or different.
In a light-emitting stage t3, the first scan signal Scan1, the compensation control signal CS, and the light-emitting control signal EM are at a low level, and the second scan signal Scan2 is at a high level. In
Referring to
Referring to
Referring to
Furthermore, the first transistor T11 and the eighth transistor T21 include a silicon semiconductor layer or an oxide semiconductor layer. The third transistor T13 and the tenth transistor T23 include a silicon semiconductor layer or an oxide semiconductor layer. Furthermore, the first transistor T11 and the eighth transistor T21 include a silicon semiconductor layer, and the third transistor T13 and the tenth transistor T23 include an oxide semiconductor layer. A low leakage current characteristic of the third transistor T13 is used to reduce an influence of one of the source or the drain of the first transistor T11 on the gate. Utilizing the low leakage current characteristic of the tenth transistor T23 reduces the low leakage current characteristic of the eighth transistor T21. Therefore, luminescence stability of sub-pixels is ensured.
Referring to
Furthermore, semiconductor layers of the first transistor T11 and the second transistor T12 are made of different materials. Semiconductor layers of the eighth transistor T21 and the ninth transistor T22 are made of different materials. Furthermore, the eighth transistor T21 and the ninth transistor T22 include an oxide semiconductor layer.
Referring to
Referring to
The first light-emitting device D1 and the second light-emitting device D2 include at least one of organic light-emitting diodes, sub-millimeter light-emitting diodes, and miniature light-emitting diodes.
The present disclosure also provides a display device including the display panel. Furthermore, the display device also includes a sensor. The sensor includes a fingerprint recognition sensor, a camera, a structured light sensor, a time-of-flight sensor, a distance sensor, a light sensor, etc., to realize fingerprint recognition, camera, face recognition, distance sensing, and other functions. Furthermore, the display panel may also include a color film layer and other parts not shown.
The foregoing embodiments are only intended for describing the technical solutions and core ideas of the present disclosure. Persons of ordinary skill in the art should understand that they may still make modifications to the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features of the technical solutions, as long as these modifications or replacements do not make the essence of corresponding technical solutions depart from the scope of the technical solutions in the embodiments of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010789802.0 | Aug 2020 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2020/110168 | 8/20/2020 | WO |