CN117746812A - Display panel, display device and compensation method - Google Patents
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Abstract
本申请公开了一种显示面板、显示设备和补偿方法，显示面板分成中心区和位于中心区侧边的周边区，显示面板包括显示模块和补偿模块，显示模块包括第一公共电极和与其耦合第二公共电极，补偿模块分别连接参考电压端、第一公共电极和位于中心区的第二公共电极，补偿模块用于根据第一公共电极的电压和参考电压端的参考电压生成补偿电压以补偿第二公共电极。如此，通过补偿模块对第一公共电极采样，并对位于中心区的第二公共电极进行补偿，第一公共电极在第二公共电极的耦合下一样实现补偿，同时，由于面内阻抗的作用，仅对位于中心区补偿可以实现显示面板的均一补偿，有效地改善显示面板的显示效果。
The application discloses a display panel, a display device and a compensation method. The display panel is divided into a central area and a peripheral area located on the side of the central area. The display panel includes a display module and a compensation module. The display module includes a first common electrode and a second common electrode coupled thereto. Two common electrodes, the compensation module is respectively connected to the reference voltage terminal, the first common electrode and the second common electrode located in the central area. The compensation module is used to generate a compensation voltage according to the voltage of the first common electrode and the reference voltage of the reference voltage terminal to compensate the second common electrode. Common electrode. In this way, the first common electrode is sampled through the compensation module and the second common electrode located in the central area is compensated. The first common electrode also realizes compensation under the coupling of the second common electrode. At the same time, due to the effect of in-plane impedance, Only the compensation in the central area can achieve uniform compensation of the display panel, effectively improving the display effect of the display panel.
Description
Technical Field
The present application relates to display technology, and in particular, to a display panel, a display device, and a compensation method.
Background
In general, a common electrode (VCOM) voltage in a liquid crystal display panel is easy to generate disturbance (cross talk phenomenon) when the VCOM voltage is coupled with a data line and a gate line and the common electrode, if the disturbed VCOM voltage cannot be recovered quickly, the display screen of the liquid crystal display panel will be abnormal, and for some liquid crystal display products which tend to be large-screen and high-brush (> 100 Hz), the cross talk degree is aggravated.
In the related art, the VCOM can be compensated, so that the VCOM voltage is recovered to a stable value after the driving is disturbed. However, for the liquid crystal display product adopting the vertical alignment pixel (Vertical Alignment, VA) display technology, there are array substrates (TFT VCOM and CF VCOM) which need to be improved at the same time, so that the increase of the number of compensation not only causes the conflict of compensation between the TFT and the CF, but also necessarily causes the increase of the wiring delay (increase of the wiring resistance) to cause the compensation failure, and meanwhile, the compensation multiples of VCOM required for different areas in the plane are different, so that the problem of uneven compensation occurs.
Disclosure of Invention
The embodiment of the application provides a display panel, display equipment and a compensation method.
The display panel of this embodiment, the display panel divide into the central district and is located the peripheral district of central district side, the display panel includes display module and compensation module, display module includes first public electrode and second public electrode, first public electrode with the coupling of second public electrode, compensation module connects respectively reference voltage end first public electrode and is located the central district the second public electrode, compensation module is used for according to the voltage of first public electrode with reference voltage generation compensation voltage in order to compensate the second public electrode.
In some embodiments, the display panel further includes a connection region, a display region, and an auxiliary region, the connection region and the auxiliary region being located at both sides of the display region, the second common electrode including a compensation point connected to the compensation module, the compensation point being located at the auxiliary region.
In some embodiments, the compensation points of the second common electrode include a plurality of compensation points symmetrically distributed on two sides of the center line of the center area, and the compensation module includes a plurality of compensation points, and one compensation module is connected with one compensation point.
In some embodiments, the display module includes an array substrate, a liquid crystal layer, and a color film substrate, wherein the liquid crystal layer is located between the array substrate and the color film substrate, the first common electrode is located on the array substrate, and the second common electrode is located on the color film substrate.
In some embodiments, the display module includes an array substrate, a liquid crystal layer, and a color film substrate, the liquid crystal layer is located between the array substrate and the color film substrate, the display module is located on the liquid crystal layer, the first common electrode is electrically connected with the color film substrate, and the second common electrode is electrically connected with the array substrate.
In some embodiments, the display panel further includes a backlight layer disposed on a side of the array substrate facing away from the liquid crystal layer, and the compensation module is disposed on the backlight layer.
In certain embodiments, the compensation module comprises:
one end of the first resistor is connected with the first common electrode;
the comparison amplifier comprises a first input end, a second input end and an output end, wherein the first input end is connected with the reference voltage end, the second input end is connected with the other end of the first resistor, and the output end is connected with the second common electrode;
and one end of the second resistor is connected with the second input end, and the other end of the second resistor is connected with the output end.
In certain embodiments, the compensation module further comprises:
and one end of the filter capacitor is connected with the first common electrode, and the other end of the filter capacitor is connected with the first resistor.
In some embodiments, the display panel further includes:
a first wiring resistor connected in series between the second input terminal and the first common electrode;
and a second wiring resistor connected in series between the output terminal and the second common electrode.
The display device of the embodiment of the application is characterized by comprising the display panel.
The compensation method of the display panel in the embodiment of the application comprises the following steps:
dividing the display panel into a central area and a peripheral area;
setting a sampling point on a first public electrode of the display panel, connecting a sampling wiring on the sampling point, and connecting the other end of the sampling wiring with a compensation module;
a compensation point is arranged on the second public electrode at the edge of the central area, and is connected with a compensation wiring, and the other end of the compensation wiring is connected with the compensation module;
and acquiring the feedback voltage of the sampling point through the compensation wiring connected with the compensation module, calculating the corresponding compensation voltage according to the feedback voltage and the preset reference voltage, and feeding back the corresponding compensation voltage to the compensation point through the compensation wiring.
According to the display panel, the display device and the compensation method, the compensation module is respectively connected with the reference voltage end, the first public electrode and the second public electrode located in the central area, so that the compensation module can sample the first public electrode and generate compensation voltage, the compensation voltage is input into the second public electrode located in the central area to compensate, the first public electrode also realizes compensation under the coupling effect while the second public electrode realizes compensation due to the coupling effect between the first public electrode and the second public electrode, and meanwhile, the higher the recovery speed of the public voltage at the edge is caused under the effect of in-plane impedance, the compensation is only performed on the second public electrode located in the central area, so that the compensation multiple of the central area is larger, the compensation multiple of the peripheral area is smaller, the uniform compensation of the display panel is realized, the cross talk phenomenon of the display panel is reduced, and the display effect of the display panel is effectively improved.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a circuit schematic of a display panel according to some embodiments of the present application.
Fig. 2 is a schematic structural view of a display panel according to some embodiments of the present application.
Fig. 3 is yet another schematic view of a display panel according to some embodiments of the present application.
Fig. 4 is a schematic layout diagram of a display panel according to some embodiments of the present application.
The main element numbers:
10-display panel, 101-central area, 102-peripheral area, 105-connection area, 106-display area, 107-auxiliary area, 11-display module, 111-first public electrode, 112-second public electrode, ref-reference voltage terminal, data-Data line, gate-Gate line, mos-driving transistor, ITO Pixel, cst-storage capacitor, clc-liquid crystal capacitor, 12-compensation module, 13-sampling trace, 14-compensation trace, R1-first resistor, R2-second resistor, C1-filter capacitor, 121-comparison amplifier, R3-first trace resistor, R4-second trace resistor, BL-backlight layer, TFT-array substrate, LCD-liquid crystal layer, CF-color film substrate.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.
In general, a common electrode (VCOM) line in a liquid crystal display panel is coupled with a data line, a gate line, etc., and a common electrode voltage may be disturbed (cross talk phenomenon), also called noise/noise, due to the coupling, if the VCOM voltage is disturbed, the VCOM voltage cannot be recovered rapidly, so that the display of the liquid crystal display panel is abnormal. On the other hand, for some liquid crystal display products (e.g., MNT liquid crystal products) that tend to be large-screen, high-swipe (> 100 Hz), the Crosstalk level is exacerbated and the user can clearly perceive the display anomalies. Therefore, cross talk is a problem to be solved in liquid crystal display panels.
In the related art, a compensation module can be added at a common electrode (VCOM) generating unit on a circuit board (PCBA) of a liquid crystal display panel, and the compensation module is connected with a common electrode line inside the liquid crystal panel through a VCOM voltage wiring, namely: the compensation module is connected with the common electrode in the liquid crystal display panel from the VCOM generating unit on the PCBA and is used for stabilizing VCOM voltage, so that VCOM compensation is realized, and the VCOM voltage is restored to a stable value after the driving is disturbed. However, due to the difference of the film layer structures, the above solution is only suitable for the liquid crystal products adopting the wide view angle display technology (Advanced Super Dimension Switch, ADS), and for the liquid crystal display products adopting the vertical arrangement pixel (Vertical Alignment, VA) display technology, since the Data signals affect the array substrate common electrode (TFT VCOM) and the color film substrate common electrode (CF VCOM) simultaneously through the parasitic capacitance Cdc, so that improvement is required for both, the common compensation solution in the industry is to sample and compensate the TFT VCOM for the TFT VCOM and sample and compensate the CF VCOM for the CF VCOM, and since the increase of the number of compensation can not only make the compensation conflict between the TFT and the CF, but also the increase of the number of routing must lead to the increase of routing delay (increase of the routing resistance), so that compensation failure occurs, and meanwhile, the compensation multiples of VCOMs required for different areas in the panel also have the difference, so that the compensation unevenness occurs, therefore, the compensation solution can only solve the problem of H-cross talk at low resolution (FHD) and low refresh rate (< 100 Hz), and the problem of cross talk of VA products under high refresh and high-resolution conditions is difficult to solve completely.
Referring to fig. 1 and 2, in view of this, the embodiment of the present application provides a display panel 10, where the display panel 10 is divided into a central area 101 and a peripheral area 102 located at a side of the central area 101, the display panel 10 includes a display module 11 and a compensation module 12, the display module 11 includes a first common electrode 111 and a second common electrode 112, the first common electrode 111 is coupled with the second common electrode 112, the compensation module 12 is respectively connected to a reference voltage terminal Ref, the first common electrode 111 and the second common electrode 112 located at the central area 101, and the compensation module 12 is configured to generate a compensation voltage according to a voltage of the first common electrode 111 and a reference voltage of the reference voltage terminal Ref to compensate the second common electrode 112.
In the display panel 10 of this embodiment, the compensation module 12 is respectively connected to the reference voltage terminal Ref, the first common electrode 111 and the second common electrode 112 located in the central area 101, so that the compensation module 12 can sample the first common electrode 111 and generate a compensation voltage, and then input the compensation voltage to the second common electrode 112 located in the central area 101 to compensate, and due to the coupling effect between the first common electrode 111 and the second common electrode 112, the first common electrode 111 also realizes compensation under the coupling effect while the second common electrode 112 realizes compensation, and meanwhile, due to the in-plane impedance effect, the faster the recovery speed of the common voltage at the edge is caused, only the second common electrode 112 located in the central area 101 compensates the central area 101, so that the compensation multiple of the central area 101 is larger and the compensation multiple of the peripheral area 102 is smaller, the compensation effect is optimized, and the compensation of the display panel 10 is more uniform, thereby reducing the cross phenomenon of the display panel 10, and effectively improving the display effect of the display panel 10.
Specifically, the display panel 10 may be a liquid crystal display panel employing a vertically aligned pixel display technology, i.e., a VA liquid crystal display panel, and the display panel 10 may have a high resolution, a high refresh rate (greater than 100 hz). The display panel 10 may be divided into three equal parts uniformly along the length direction, wherein the central region 101 is located in the middle region, and the peripheral regions 102 are located at both sides of the central region 101.
Referring to fig. 1, the display panel 10 further includes a display module 11 and a compensation module 12, the display module 11 includes a Data line Data, a Gate line Gate, a driving transistor Mos, an ITO Pixel, a first common electrode 111 and a second common electrode 112, the first common electrode 111 and the second common electrode 112 are located at different layers, the storage capacitor Cst, the first common electrode 111 includes a liquid crystal capacitor Clc, the second common electrode 112 includes a storage capacitor Cst, and the first common electrode 111 and the second common electrode 112 have a capacitive coupling effect, a first pole of the driving transistor Mos is connected to the Data line Data, a second pole of the driving transistor Mos is connected to the ITO Pixel, a control pole of the driving transistor Mos is connected to the Gate line Gate, and the driving transistor Mos is used for driving the ITO Pixel to emit light according to signals provided by the Data line Data and the Gate line Gate. One end of the energy storage capacitor Cst of the second common electrode 112 is connected with the ITO Pixel, the other end of the energy storage capacitor Cst is connected with the compensation module 12, the energy storage capacitor is used for storing energy to keep electric quantity of the liquid crystal capacitor Clc, one end of the liquid crystal capacitor Clc of the first common electrode 111 is connected with the ITO Pixel, the other end of the liquid crystal capacitor Clc is connected with the compensation module 12, and the liquid crystal capacitor Clc is used for controlling deflection angle of the ITO Pixel, so that transmittance of light is changed to display different brightness (gray scale).
The display panel 10 may further include a sampling trace 13 and a compensation trace 14, the compensation module 12 may be connected to the first common electrode 111 through the sampling trace 13, a position connected to the first common electrode 111 may be a sampling point, the sampling trace 13 is used for collecting a voltage of a point adopted in the first common electrode 111 and providing the voltage to the compensation module 12, the compensation module 12 is further connected to the reference voltage end Ref and connected to the second common electrode 112 through the compensation trace 14, and a position connected to the second common electrode 112 is a compensation point. The compensation point is located at the second common electrode 112 located in the central area 101, and the compensation module 12 is configured to generate a compensation voltage according to the voltage collected by the sampling trace 13 from the first common electrode 111 and the reference voltage provided by the reference terminal, and provide the compensation voltage to the second common electrode 112 located in the center through the compensation trace 14.
It can be understood that, because the voltage recovery speed of the second common electrode 112 in the different areas is slower as the second common electrode 112 is closer to the central area 101, the recovery speed is larger as the compensation multiple is required, and the recovery speed is faster as the second common electrode 112 in the central area 101 is farther from the surface of the central area 101, the compensation multiple of the second common electrode 112 in the central area 101 is larger, and the compensation multiple of the second common electrode 112 in the peripheral area 102 is smaller by using the in-plane impedance effect, so that the uniform compensation of the display panel 10 is realized, the cross talk effect is improved, the display effect of the display panel 10 is improved, and meanwhile, because the capacitive coupling effect exists between the first common electrode 111 and the second common electrode 112, the first common electrode 111 is also compensated due to the coupling of the second common electrode 112 while the second common electrode 112 is compensated, and the display effect of the display panel 10 is further improved.
Further, referring to fig. 3, the display panel 10 may be further divided into a connection area 105, a display area 106 and an auxiliary area 107, where the connection area 105 and the auxiliary area 107 are located at two sides of the display area 106, the display area 106 is used for displaying images, the Data line Data, the Gate line Gate, the driving transistor Mos and the ITO Pixel are located in the display area 106, the connection area 105 is used for connecting the liquid crystal screen and the flexible circuit board, the compensation module 12 may be disposed in the connection area 105, the auxiliary area 107 may also be referred to as a DPO (Data pad opposite) area, and the first common electrode 111 and the second common electrode 112 may be located at least partially in the auxiliary area 107, and the first common electrode 111 and the second common electrode 112 located in the auxiliary area 107 are respectively connected with the ITO Pixel located in the display area 106. Wherein the sampling point may be a first common electrode 111 located at an arbitrary position in the auxiliary area 107, the compensation point is located in the auxiliary area 106 and a second common electrode 112 of the central area 101.
In some examples, the display panel 10 may be uniformly divided into 6 regions in the length direction, wherein regions 1 and 2 are the peripheral region 102, regions 3 and 4 are the central region 101, and regions 5 and 6 are the peripheral region 102, and the compensation point may be any position in the second common electrode 112 at the edges of the regions 3 and 4.
Referring to fig. 1 further, in some embodiments, the compensation module 12 includes a first resistor R1, a comparison amplifier 121, and a second resistor R2, wherein one end of the first resistor R1 is connected to the first common electrode 111, the comparison amplifier 121 includes a first input end connected to the reference voltage end Ref, a second input end connected to the other end of the first resistor R1, and an output end connected to the second common electrode 112; one end of the second resistor R2 is connected with the second input end, and the other end of the second resistor R2 is connected with the output end.
When the voltages at the first input terminal and the second input terminal of the comparison amplifier 121 are constant, the compensation voltage at the output terminal of the common comparison amplifier 121 is related to the ratio between the first resistor R1 and the second resistor R2. The first resistor R1 is a fixed resistor, and the resistance of the second resistor R2 can be adjusted, so that after the compensation multiple is determined, the ratio between the first resistor R1 and the second resistor R2 can be changed by adjusting the resistance of the second resistor R2, so that the compensation voltage output by the comparison amplifier 121 meets the compensation requirement of the second common electrode 112.
In this way, the compensation multiple of the compensation voltage can be adjusted according to changing the ratio of the first resistor R1 to the second resistor R2, so that the comparison amplifier 121 can output the compensation voltage meeting the compensation requirement of the display panel 10.
Referring to fig. 1, in some embodiments, the compensation module 12 further includes a filter capacitor C1, one end of the filter capacitor C1 is connected to the first common electrode 111, and the other end of the filter capacitor C1 is connected to the first resistor R1.
It should be noted that, the filter capacitor C1 can be connected to ac to block dc, and prevent dc components from entering, so as to improve the performance and stability of the comparison amplifier 121 and ensure the stability of compensation by the compensation module 12.
Referring to fig. 1, in some embodiments, the display panel 10 further includes a first routing resistor R3 and a second routing resistor R4, the first routing resistor R3 is connected in series between the second input terminal and the first common electrode 111, and the second routing resistor R4 is connected in series between the output terminal and the second common electrode 112.
Specifically, the first trace resistor R3 may be a resistor of the sampling trace 13, the second trace resistor R4 may be a resistor of the compensating trace 14, one end of the first trace resistor R3 is connected to the first common electrode 111, the other end is connected to the filter capacitor C1, one end of the second trace resistor R4 is connected to the second common electrode 112, and the other end is connected to the output end of the comparison amplifier 121.
In some embodiments, the compensation points of the second common electrode 112 include a plurality of compensation points symmetrically distributed on both sides of the center line of the center area 101, the compensation module 12 includes a plurality of compensation points, and one compensation module 12 is connected to one compensation point.
Referring to fig. 4, in some embodiments, the display module 11 includes an array substrate TFT, a liquid crystal layer LCD, and a color film substrate CF, the liquid crystal layer LCD is located between the array substrate TFT and the color film substrate CF, the first common electrode 111 is located on the array substrate TFT, and the second common electrode 112 is located on the color film substrate CF. That is, the first common electrode 111 is an array substrate TFT common electrode, and the second common electrode 112 is a color film substrate CF common electrode.
In some embodiments, the display module 11 includes an array substrate TFT, a liquid crystal layer LCD, and a color film substrate CF, the liquid crystal layer LCD is located between the array substrate TFT and the color film substrate CF, the display module 11 is located on the liquid crystal layer LCD, the first common electrode 111 is electrically connected to the color film substrate CF, and the second common electrode 112 is electrically connected to the array substrate TFT. That is, in the present embodiment, the first common electrode 111 is a color film substrate common electrode, and the second common electrode 112 is an array substrate common electrode.
It can be understood that, since the TFT film layer of the array substrate is a mesh structure, the color film substrate CF is a whole-surface structure, and the in-plane retardation difference is relatively large, only a small local area can be compensated when the TFT common electrode of the array substrate is compensated, so that the compensation effect is better and the display effect of the display panel 10 is improved by sampling the TFT common electrode of the array substrate and compensating the CF common electrode of the color film substrate.
Referring further to fig. 4, in some embodiments, the display panel 10 further includes a backlight layer BL on a side of the array substrate TFT facing away from the liquid crystal layer LCD, and the compensation module 12 is located on the backlight layer BL.
In this way, the compensation module 12 can compensate the common electrode of the display panel 10, so as to ensure the display effect of the display panel 10.
The display device of the present embodiment includes the display panel 10 of any of the above embodiments.
In the display device of the present application, the compensation module 12 is respectively connected to the reference voltage terminal Ref, the first common electrode 111 and the second common electrode 112 located in the central area 101, so that the compensation module 12 can sample the first common electrode 111 and generate a compensation voltage, and then input the compensation voltage into the second common electrode 112 located in the central area 101 to compensate, and due to the coupling effect between the first common electrode 111 and the second common electrode 112, the first common electrode 111 also realizes compensation under the coupling effect while the second common electrode 112 realizes compensation, and meanwhile, due to the in-plane impedance effect, the faster the recovery speed of the common voltage at the edge is caused, the compensation is only performed on the second common electrode 112 located in the central area 101, so that the compensation multiple of the central area 101 is larger and the compensation multiple of the peripheral area 102 is smaller, thereby realizing uniform compensation of the display device, and thus reducing the cross talk phenomenon of the display device and effectively improving the display effect of the display device.
The present embodiment also provides a compensation method for compensating the display panel 10 of any one of the above embodiments, including:
01 dividing the display panel into a central area and a peripheral area;
02, setting a sampling point on a first public electrode of the display panel, connecting a sampling wiring on the sampling point, and connecting the other end of the sampling wiring with a compensation module;
03, setting a compensation point on a second public electrode at the edge of the central area, connecting a compensation wiring at the compensation point, and connecting the other end of the compensation wiring with a compensation module;
04, obtaining feedback voltage of the sampling point through a compensation wiring connected with the compensation module, calculating corresponding compensation voltage according to the feedback voltage and preset reference voltage, and feeding back to the compensation point through the compensation wiring.
According to the compensation method of the display panel 10, the display panel is divided into the central area and the peripheral area, the sampling points are arranged on the first public electrode, the sampling wires are connected with the sampling points and the compensation module respectively, the compensation points are arranged on the second public electrode at the edge of the central area, the compensation wires are connected with the compensation points and the compensation module respectively, the compensation module can sample the first public electrode and generate compensation voltage, the compensation voltage is input into the second public electrode located in the central area for compensation, the first public electrode is also compensated under the coupling effect due to the coupling effect between the first public electrode and the second public electrode, meanwhile, the compensation is also realized under the coupling effect due to the fact that the common voltage recovery speed at the edge is higher under the effect of in-plane impedance, therefore, the compensation is only performed on the second public electrode located in the central area, the compensation multiple is larger, the compensation multiple of the peripheral area is smaller, the uniform compensation of the display panel is realized, and the cross phenomenon of the display panel is reduced, and the display effect of the display panel is effectively improved.
In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
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| WO2025213504A1 (en) * | 2024-04-12 | 2025-10-16 | 广州华星光电半导体显示技术有限公司 | Display device, and common voltage compensation method for display panel |
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| CN112562607A (en) * | 2020-12-17 | 2021-03-26 | 昆山龙腾光电股份有限公司 | Common voltage compensation circuit for display panel, compensation method and display device |
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| WO2025213504A1 (en) * | 2024-04-12 | 2025-10-16 | 广州华星光电半导体显示技术有限公司 | Display device, and common voltage compensation method for display panel |
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