The present disclosure relates to the field of display technology, specifically relates to a display panel and a display device.
In an existing display panel, the polarity of the data voltage input to the subpixel is reversed in two consecutive displays. Due to the leakage of the source and drain of the switching transistor, the brightness of the subpixels gradually decreases after the scanning of the first frame of the display is completed. After entering the second frame of the display screen, due to the input of data voltage of opposite polarity to the sub-pixel, the voltage difference between the source and drain of the switching transistor increases, the leakage speed of the source and drain increases, and the brightness of the subpixel continues to decrease until the pixel brightness increases significantly after the next scan. Therefore, the brightness of the display panel in the two consecutive display frames of the display screen changes greatly, resulting in the problem of flickering of the display panel.
The present disclosure provides a display panel and a display device. The display panel and display device can solve the problem that the brightness of the display panel in the two consecutive display frames of the display screen changes greatly, resulting in the display panel flickering.
In a first aspect, an embodiment of the present disclosure is directed to a display panel. The display panel for displaying images comprising a first frame and a second frame includes a plurality of subpixels, a plurality of scan lines, a plurality of data lines, and a compensation module. The plurality of scan lines are arranged in a first direction and connected to the plurality of sub-pixels. The plurality of data lines are arranged in a second direction crossing the first direction, and connected to a plurality of the sub-pixels. A polarity of a first data voltage input to the subpixels in a display period of the first frame is opposite to a polarity of a second data voltage input to the subpixel in a display period of the second frame. The compensation module is electrically connected to the plurality of data lines, and configured to input a first compensation voltage to the subpixels in a blank period of the first frame and to input a second compensation voltage to the subpixel in a blank period of the second frame. A polarity of the first compensation voltage is the same as the polarity of the first data voltage, and a polarity of the second compensation voltage is the same as the polarity of the second data voltage. The first compensation voltage is not zero, and the second compensation voltage is not zero.
In a second aspect, embodiments of the present disclosure also is directed to a display device. The display device comprises a frame body and a display panel. The display panel for displaying images comprising a first frame and a second frame includes a plurality of subpixels, a plurality of scan lines, a plurality of data lines, and a compensation module. The plurality of scan lines are arranged in a first direction and connected to the plurality of sub-pixels. The plurality of data lines are arranged in a second direction crossing the first direction, and connected to a plurality of the sub-pixels. A polarity of a first data voltage input to the subpixels in a display period of the first frame is opposite to a polarity of a second data voltage input to the subpixel in a display period of the second frame. The compensation module is electrically connected to the plurality of data lines, and configured to input a first compensation voltage to the subpixels in a blank period of the first frame and to input a second compensation voltage to the subpixel in a blank period of the second frame. A polarity of the first compensation voltage is the same as the polarity of the first data voltage, and a polarity of the second compensation voltage is the same as the polarity of the second data voltage. The first compensation voltage is not zero, and the second compensation voltage is not zero.
The display panel and display device provided by the present disclosure are electrically connected to the plurality of data lines by setting a compensation module, and input the first compensation voltage to the subpixel in the blank period of the first frame and the first frame in the second frame in a continuous display and the second compensation voltage into the subpixel in the blank period of the second frame, reduce the voltage difference between the source and drain corresponding to the subpixel in the blank period, so that the potential of the subpixel remains stable, slows down the leakage, and alleviates the obvious reduction of the brightness of the subpixel due to serious leakage after the end of the scan to the next scan, and after the next scan of the sub-pixel, the brightness increases significantly, causing the brightness of the display panel to change greatly in the two consecutive display frames, resulting in the problem of flickering of the display panel to improve the display effect.
The technical solution in the embodiment of the present disclosure will be described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. The described technical solution is only used to explain and illustrate the ideas of the present disclosure and should not be regarded as a limitation of the scope of protection of the present disclosure.
The embodiments provided in the present disclosure are similar, and the features in different embodiments are combined with each other.
As illustrated in
The compensation module 40 is electrically connected to the plurality of data lines 30. The compensation module 40 is used to input a first compensation voltage to the subpixel 10 in the blank period of the first frame and a second compensation voltage to the subpixel 10 in the blank period of the second frame. The polarity of the first compensation voltage is the same as the polarity of the first data voltage. The polarity of the second compensation voltage is the same as the polarity of the second data voltage. The first compensation voltage is not zero, and the second compensation voltage is not zero.
The display panel 100 is electrically connected to the plurality of data lines 30 through the compensation module 40. When the display panel 100 displays the first frame and the second frame is sequence, the compensation module 40 transmits the first compensation voltage to the subpixel 10 in the blank period of the first frame and transmits the second compensation voltage to the subpixel 10 in the blank period of the second frame, so that the potential of the subpixel 10 remains stable, improving the problem that the brightness of the subpixel 10 is significantly reduced due to serious leakage after the end of the scan and before the next scan, and the brightness increases significantly after the next scan of the subpixel 10, causing the brightness of the display panel to change greatly in the two frames of the display image displayed continuously, resulting in the problem of flickering of the display panel.
In an embodiment of the present disclosure, the compensation module 40 includes a compensation voltage output terminal V0. The compensation voltage output terminal V0 is electrically connected to the plurality of data lines 30. The compensation voltage output terminal V0 is used to output a first compensation voltage and a second compensation voltage. The absolute value of the first compensation voltage is less than or equal to the absolute value of the first data voltage, and the absolute value of the second compensation voltage is greater than or equal to the absolute value of the second data voltage.
Specifically, the first data voltage is a positive polarity data voltage. For example, the first data voltage is 2 volts. The first compensation voltage is greater than 0 volts and less than or equal to 2 volts. For example, the first compensation voltage is 1.5 volts. When the first data voltage is a negative polarity data voltage, e.g., 2 volts, then the first compensation voltage is less than 0 volts and greater than or equal to −2 volts. For example, the first compensation voltage is −1.5 volts.
The absolute value of the first compensation voltage is equal to the absolute value of the second compensation voltage.
In an embodiment of the present disclosure, the compensation module 40 comprises a plurality of switching transistors TO. The gate of the switching transistor TO is electrically connected to the global control signal terminal GAS0. A first input terminal of the switching transistor TO is electrically connected to the compensation voltage output terminal V0, and the source and drain of the switching transistor TO are electrically connected to one end of the data line 30.
In an embodiment of the present disclosure, the display panel further comprises a gate drive circuit 50 and a source drive circuit 60, the gate drive circuit 50 is electrically connected to a plurality of scan lines 20, and the gate drive circuit 50 is used to provide a scanning signal to the subpixel 10. The source driver circuit 60 is electrically connected to the other end of a plurality of data lines 30, and the source driver circuit 60 is used to provide a data voltage to the subpixel 10.
In an embodiment of the present disclosure, in the blank period, the turned-on time of the switching transistor TO is greater than or equal to the off-time.
As illustrated in
As illustrated in
As illustrated in
Specifically, the display panel 200 displays a first and second frame, the display panel 200 comprises: a plurality of subpixels 10, a plurality of scan lines 20, a plurality of data lines 30 and compensation module 40. A plurality of scan lines 20 are arranged in the first direction Y, and a plurality of scan lines 20 are electrically connected to a plurality of subpixels 10. A plurality of data lines 30 are arranged in the second direction X, the first direction Y crosses with the second direction X, a plurality of scan lines 20 are electrically connected to a plurality of sub-pixels 10, the polarity of the first data voltage input to the subpixel 10 in the display period of the first frame 30 is opposite to the polarity of the second data voltage input to the subpixel 10 during the display period of the second display.
A plurality of data lines 30 includes a plurality of first data lines 31 and a plurality of second data lines 32, a plurality of first data lines 31 and a plurality of second data lines 32 are alternately disposed along the second direction X. The first data voltage includes the first positive polarity data voltage and the first negative polarity data voltage, in the display period of the first frame, the data voltage of the first data line 31 input subpixel 10 is the first positive polarity data voltage, and the data voltage of the second data line 32 input subpixel 10 is the first negative polarity data voltage. The second data voltage includes the second positive polarity data voltage and the second negative polarity data voltage, in the display period of the second frame, the data voltage of the first data line 31 input subpixel 10 is the second negative polarity data voltage, and the data voltage of the second data line 32 input subpixel 10 is the second positive polarity data voltage.
In an embodiment of the present disclosure, the compensation module 40 comprises a first compensation voltage output terminal V1 and a second compensation voltage output terminal V2, the first compensation voltage output terminal V1 is electrically connected to the first data line 31, the first compensation voltage includes a first positive polarity compensation voltage and a first negative polarity compensation voltage, the first positive polarity compensation voltage is less than or equal to the first positive polarity data voltage, and the first negative polarity compensation voltage is greater than or equal to the first negative polarity data voltage. For example, if the first positive polarity data voltage is 2 volts, the first positive polarity compensation voltage is greater than 0 volts and less than or equal to 2 volts, for example, the first positive polarity compensation voltage is 1.5 volts. If the first negative polarity data voltage is −2 volts, then the first negative polarity compensation voltage is less than 0 volts and greater than or equal to −2 volts, for example, the first negative polarity compensation voltage is −1.5 volts.
The second compensation voltage output terminal V2 is electrically connected to the second data line 32. The second compensation voltage includes the second positive polarity compensation voltage and the second negative polarity compensation voltage. The second positive polarity compensation voltage is less than or equal to the second positive polarity data voltage, and the second negative polarity compensation voltage is greater than or equal to the second negative polarity data voltage.
When the second positive polarity data voltage is 2 volts, the second positive polarity compensation voltage is greater than 0 volts and less than or equal to 2 volts, for example, the second positive polarity compensation voltage is 1 volt. If the second negative polarity data voltage is −2 volts, then the second negative polarity compensation voltage is less than 0 volts and greater than or equal to −2 volts, for example, the second negative polarity compensation voltage is −1 volt.
In an embodiment of the present disclosure, the compensation module 40 comprises a plurality of first switching transistors T1 and a plurality of second switching transistors T2, the gates of a plurality of first switching transistors T1 and the gates of a plurality of second switching transistors T2 are electrically connected to the global control signal terminal GAS0. One of the source and drain of the first switching transistor T1 is electrically connected to the first compensation voltage output terminal V1, and the source and drain of the first switching transistor T1 are electrically connected to one end of the first data line 31. One of the source and drain of the second switching transistor T2 is electrically connected to the second compensation voltage output terminal V2, and the source and drain of the second switching transistor T2 are electrically connected to one end of the second data line 32.
In an embodiment of the present disclosure, the first switching transistor T1 and the second switching transistor T2 are off during the display period, and the first switching transistor T1 and the second switching transistor T2 are turned on in the blank period.
As illustrated in
As illustrated in
As illustrated in
Specifically, the blank period T02 includes the first blank sub-period T001 and the second blank sub-period T002, the first blank sub-period T001 and the second blank sub-period T002 are adjacent to each other. where the duration of the first blank sub-period T001 is greater than the duration of the second blank sub-period T002.
In an embodiment of the present disclosure, the global control signal terminal GAS0 enters the global control signal gas0 with low potential during the display period t01, and the first switching transistor T1 and the second switching transistor T2 are turned off. The blank period includes the first blank sub-period t001 and the second blank sub-period t002, the first blank sub-period T001 is adjacent to the second blank sub-period t002, the global control signal terminal GAS0 enters the high-potential global control signal gas0 in the first blank sub-period t001, the first switch transistor T1 and the second switch transistor T2 are turned on in the first blank sub-period t001. The global control signal terminal GAS0 enters the low-potential global control signal gas0 in the second blank sub-period t002, and the first switching transistor T1 and the second switching transistor T2 are turned off in the second blank sub-period t002.
Alternatively, if the duration of the second blank sub-period t002 is greater than the duration of the first blank sub-period t001, then both the first switching transistor T1 and the second switching transistor T2 are turned on at the second blank sub-period t002 and closed at the first blank sub-period t001.
As illustrated in
Specifically, the compensation module 40 includes a plurality of first switching transistors T1 and a plurality of second switching transistors T2, the gate of a plurality of first switching transistors T1 is electrically connected to the first control signal terminal GAS1, and the gate of a plurality of second switching transistor T2 is electrically connected to the second control signal terminal GAS2. One of the source and drain of the first switching transistor T1 is electrically connected to the first compensation voltage output terminal V1, and the source and drain of the first switching transistor T1 are electrically connected to one end of the first data line 31. One of the source and drain of the second switching transistor T2 is electrically connected to the second compensation voltage output terminal V2, and the source and drain of the second switching transistor T2 are electrically connected to one end of the second data line 32.
Other structures of the display panel 300 are the same as other structures in the display panel 200.
As illustrated in
As illustrated in
Specifically, the first control signal terminal GAS1 enters the first control signal gas1 with low potential during the display period, and the first switching transistor T1 is turned off. The second control signal terminal GAS2 enters the second control signal gas2 with low potential during the display period, and the second switch transistor T2 is turned off. The first control signal terminal GAS1 inputs the first control signal gas1 of high potential in multiple first blank sub-periods t001, and the first switching transistor T1 conducts in multiple first blank sub-periods t001. The first control signal terminal GAS1 inputs the first control signal gas1 of low potential in multiple second blank sub-periods t002, and the first switching transistor T1 is turned off in multiple second blank sub-periods t002. The second control signal terminal GAS2 inputs the high potential second control signal gas2 in multiple second blank sub-periods t002, and the second switching transistor T2 conducts in multiple second blank sub-periods t002. The second control signal terminal GAS2 enters the second control signal gas2 at a low potential in multiple first blank subperiods t001, and the second switch transistor T2 is turned off at multiple first blank subperiods t001.
As illustrated in
Specifically, the first control signal terminal GAS1 enters the first control signal gas1 with low potential during the display period, the second control signal terminal GAS2 enters the second control signal gas2 with low potential during the display period, and the first switch transistor T1 and the second switch transistor T2 are turned off. The first control signal terminal GAS1 enters the first control signal gas1 with high potential in the first blank sub-period t001 and the second blank sub-period t002, and the first switching transistor T1 is turned on. The first control signal terminal GAS1 enters the first control signal gas1 with low potential in the third blank sub-period t003, and the first switching transistor T1 is turned off. The second control signal terminal GAS2 enters the second control signal gas2 with low potential in the first blank sub-period t001, and the second switch transistor T2 is turned off. The second control signal terminal GAS2 enters the second control signal gas2 with high potential in the second blank sub-period t002 and the third blank sub-period t003, and the second switching transistor T2 is turned on.
As illustrated in
Other structures of the display panel 400 are the same as other structures of the display panel 300.
An embodiment of the present disclosure also provides a display device, the display device comprises a display panel and a frame, the display panel is disposed in the frame.
The above embodiment of the present disclosure provides a display panel and display device in detail, the above embodiment description is only to help understand the core idea of the present disclosure, the above description should not be understood as a limitation of the scope of protection of the present disclosure
Number | Date | Country | Kind |
---|---|---|---|
202311008330.0 | Aug 2023 | CN | national |
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/CN2023/113220 | 8/16/2023 | WO |