Driving method of display panel and display panel

Abstract

The embodiment of the present application discloses a display panel driving method and display panel, by obtaining the corresponding to be displayed gray scale data and to be displayed proportion of to-be-displayed picture, determining the compensation coefficient corresponding to the sub-pixel according to the to-be-displayed gray scale data and to-be-displayed proportion, and carrying out brightness compensation on the sub-pixel according to the compensation coefficient corresponding to the sub-pixel. The technical scheme of the embodiment considers the influence of the display gray scale of the sub-pixel in the display panel and the display proportion of the display panel on the in-plane resistance, and considers the factors influencing the brightness of the sub-pixel, realizes the brightness compensation on the sub-pixel according to the to-be-displayed gray scale data and to-be-displayed proportion of the to-be-displayed picture, reduces the brightness difference of the sub-pixel corresponding to the same display gray scale caused by the change of the out-of-plane resistance voltage division when the in-plane resistance changes due to the different to-be-displayed gray scale data and / or display proportion of the display picture, and improves the picture display effect.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a driving method of display panel and display panel. BACKGROUND

[0002] With the development of display technology, users have higher and higher requirements on the picture display effect of display panel.

[0003] In the existing display panel, under different display ratio display pictures, there is a difference in the brightness of the sub-pixels corresponding to the same display gray scale in the display panel, which affects the picture display effect. SUMMARY

[0004] The present application provides a driving method of display panel and display panel to compensate for the brightness difference caused by different display ratios and improve the picture display effect.

[0005] In a first aspect, embodiments of the present application provide a driving method of display panel, comprising:

[0006] obtaining display gray scale data corresponding to a to-be-displayed picture and a to-be-displayed ratio; wherein the display gray scale data comprises to-be-displayed gray scale corresponding to the sub-pixels in the display panel; and the to-be-displayed ratio is positively correlated with the number of sub-pixels to be lighted under the to-be-displayed picture;

[0007] determining a compensation coefficient corresponding to the sub-pixels according to the display gray scale data and the to-be-displayed ratio;

[0008] performing brightness compensation on the sub-pixels according to the compensation coefficient corresponding to the sub-pixels.

[0009] Optionally, the to-be-displayed ratio comprises a total ratio, and the total ratio is equal to the ratio of the number of sub-pixels to be lighted in the to-be-displayed picture to the total number of sub-pixels.

[0010] Alternatively, the to-be-displayed ratio comprises a sub-ratio, and the sub-ratio is equal to the ratio of the number of sub-pixels of the same light-emitting color to be lighted in the to-be-displayed picture to the total number of sub-pixels of the same light-emitting color.

[0011] Optionally, before determining the compensation coefficient corresponding to the sub-pixels according to the display gray scale data and the to-be-displayed ratio, the method further comprises:

[0012] determining the brightness relationship between the display brightness of the sub-pixels in a plurality of preset display ratio scenes under a preset gray scale condition and the reference display brightness of the sub-pixels under a reference display ratio, under a set display brightness value;

[0013] determining the compensation coefficient corresponding to the sub-pixels in the preset display ratio scene under the preset gray scale condition according to the brightness relationship;

[0014] The compensation coefficients corresponding to the sub-pixels in the preset display ratio scene under the preset gray scale condition are stored.

[0015] The luminance relationship is related to the in-plane resistance and the out-of-plane resistance of the display panel corresponding to the reference display ratio scene under the preset gray scale condition; and the out-of-plane resistance is an equivalent resistance from a first power supply connected to a power input end of the sub-pixel to the display area.

[0016] When the preset display ratio corresponds to the total ratio, the in-plane resistance is a total in-plane resistance, which is a parallel total resistance of the sub-pixels of the preset gray scale in the reference display ratio scene under the preset gray scale condition; and under the display picture corresponding to the preset display ratio scene of the preset gray scale, the display gray scale corresponding to the sub-pixel of the preset display ratio is the preset gray scale, and the display gray scale corresponding to the other sub-pixels is 0 gray scale.

[0017] When the preset display ratio corresponds to the sub-ratio of the same light-emitting color sub-pixel, the in-plane resistance is a primary color in-plane resistance, which is a parallel equivalent resistance of the same light-emitting color sub-pixel of the preset gray scale in the reference display ratio scene under the preset gray scale condition; and under the display picture corresponding to the preset display ratio scene of the preset gray scale, in the same light-emitting color sub-pixel, the display gray scale corresponding to the sub-pixel of the preset display ratio is the preset gray scale, and the display gray scale corresponding to the other sub-pixels is 0 gray scale.

[0018] Preferably, the reference display ratio is equal to 1.

[0019] Preferably, the compensation coefficients corresponding to the sub-pixels are determined according to the to-be-displayed gray scale data and the to-be-displayed ratio, and the compensation coefficients corresponding to the sub-pixels are determined according to the to-be-displayed gray scale data and the to-be-displayed ratio.

[0020] When the to-be-displayed gray scale data matches the preset gray scale and the to-be-displayed ratio matches the preset display ratio, the compensation coefficients corresponding to the preset gray scale and the preset display ratio are configured as the compensation coefficients corresponding to the to-be-displayed gray scale data and the to-be-displayed ratio.

[0021] When the to-be-displayed gray scale data does not match the preset gray scale and / or the to-be-displayed ratio does not match the preset display ratio, the compensation coefficients corresponding to the to-be-displayed gray scale data and the to-be-displayed ratio are determined according to the compensation coefficients corresponding to the preset gray scale and the preset display ratio.

[0022] Optionally, under a set display luminance value, the display luminance of the sub-pixels in the plurality of preset display ratio scenes under the preset gray scale condition is determined, and the luminance relationship between the display luminance of the sub-pixels in the plurality of preset display ratio scenes under the preset gray scale condition and the reference display luminance of the sub-pixels in the reference display ratio scene under the preset gray scale condition is determined.

[0023] Determine the relationship between the in-plane resistance and the out-of-plane resistance corresponding to the display panel under the display screen in the preset gray scale and the reference display ratio; when the preset display ratio corresponds to the total ratio, the relationship between the in-plane resistance and the out-of-plane resistance includes the relationship between the total in-plane resistance and the out-of-plane resistance; when the preset display ratio corresponds to the sub-ratio corresponding to the same light-emitting color sub-pixel, the relationship between the in-plane resistance and the out-of-plane resistance includes the relationship between the primary color in-plane resistance and the out-of-plane resistance.

[0024] According to the preset display ratio, the relationship between the in-plane resistance and the out-of-plane resistance determines the brightness relationship.

[0025] Optionally, the relationship between the in-plane resistance and the out-of-plane resistance corresponding to the display panel under the display screen in the preset gray scale and the reference display ratio is determined, including:

[0026] According to the brightness corresponding to the sub-pixel under the display screen in the preset gray scale and two different preset display ratios, the relationship between the in-plane resistance and the out-of-plane resistance of the display panel is determined; the two different preset display ratios include the reference display ratio;

[0027] Optionally, the display screen is a monochrome display screen; the determined compensation coefficient is the compensation coefficient corresponding to the same light-emitting color sub-pixel;

[0028] Optionally, the relationship between the in-plane resistance and the out-of-plane resistance of the display panel is:

[0029] ; wherein is a preset display ratio; is the display brightness of the display screen in the reference display ratio, is the display brightness when the preset display ratio is ; R1 is the in-plane resistance, and R0 is the out-of-plane resistance;

[0030] The calculation formula of the compensation coefficient is:

[0031] ;

[0032] wherein, indicates the compensation coefficient, indicates any preset display ratio.

[0033] Optionally, obtaining the to-be-displayed gray scale data and the to-be-displayed ratio corresponding to the to-be-displayed screen includes:

[0034] Obtaining the to-be-displayed gray scale data corresponding to the to-be-displayed screen;

[0035] Determining the to-be-displayed ratio according to the to-be-displayed gray scale data;

[0036] Optionally, determining the to-be-displayed ratio according to the to-be-displayed gray scale data includes:

[0037] determining a total ratio of a number of sub-pixels corresponding to the display gray scale in the to-be-displayed gray scale data to a total number of sub-pixels;

[0038] or,

[0039] determining a sub-ratio of a number of sub-pixels corresponding to the display gray scale in the same light-emitting color in the to-be-displayed gray scale data to a total number of sub-pixels corresponding to the same light-emitting color;

[0040] Optionally, the display gray scale is set to be 0 gray scale.

[0041] Optionally, the number of display brightness values includes at least two; and the compensation coefficient corresponding to the sub-pixel under a display brightness value other than the display brightness value is obtained by interpolation calculation according to the compensation coefficients under the at least two display brightness values.

[0042] And / or, the number of preset gray scales under the same display brightness value includes a plurality; and the compensation coefficient corresponding to each display ratio of a display gray scale other than the preset gray scale under the same display brightness value is obtained by interpolation calculation according to the compensation coefficients corresponding to the same display ratio of the preset gray scale.

[0043] Optionally, under the to-be-displayed picture, the to-be-displayed gray scale of the sub-pixel corresponding to the to-be-displayed ratio in the same light-emitting color sub-pixel is the same gray scale greater than 0 gray scale, and the to-be-displayed gray scale of the other sub-pixels is 0 gray scale.

[0044] In a second aspect, the embodiment of the present application further provides a display panel, which is driven by the driving method of the display panel of the first aspect.

[0045] Optionally, the display panel includes sub-pixels of at least two light-emitting colors, the sub-pixel includes a light-emitting device and a pixel circuit, the pixel circuit is electrically connected with a first electrode of the light-emitting device, the pixel circuit includes a power input end, the power input end is connected with a first power supply, and the pixel circuit is used for driving the light-emitting device to emit light according to a power signal input by the first power input end.

[0046] The second electrode of the light-emitting device is connected with a second power supply.

[0047] Among them, the second electrodes of the light-emitting devices of different light-emitting colors are insulated from each other, and the second electrodes of the light-emitting devices of different light-emitting colors are connected with different second power supplies.

[0048] And / or, the power input ends of the pixel circuits connected with the light-emitting devices of different light-emitting colors are insulated from each other, and the power input ends of the pixel circuits connected with the light-emitting devices of different light-emitting colors are connected with different first power supplies.

[0049] Optionally, the display area of the display panel is divided into a plurality of sub-display areas.

[0050] In different sub-display areas, the second electrodes of the light emitting devices of the same light emitting color are insulated from each other, and the second electrodes of the light emitting devices of the same light emitting color are connected to different second power supplies in different sub-display areas.

[0051] In different sub-display areas, the power input terminals of the pixel circuits connected to the light emitting devices of the same light emitting color are insulated from each other, and the power input terminals of the pixel circuits connected to the light emitting devices of the same light emitting color are connected to different first power supplies in different sub-display areas.

[0052] The embodiment of the present application discloses a display panel driving method and a display panel. The display panel driving method comprises the following steps: obtaining display grayscale data and a display ratio corresponding to a to-be-displayed picture; determining a compensation coefficient corresponding to a sub-pixel according to the display grayscale data and the display ratio; and performing brightness compensation on the sub-pixel according to the compensation coefficient corresponding to the sub-pixel. The technical scheme of the embodiment takes into account the factors that affect the brightness of the sub-pixel due to the influence of the display grayscale of the sub-pixel in the display panel and the display ratio of the display panel on the in-plane resistance, so that the brightness compensation is performed on the sub-pixel according to the display grayscale data and the display ratio of the to-be-displayed picture, and the brightness difference of the sub-pixel corresponding to the same display grayscale caused by the change of the out-of-plane resistance voltage division when the in-plane resistance changes due to the difference between the display grayscale data and / or the display ratio of the display picture is reduced, thereby improving the picture display effect. BRIEF DESCRIPTION OF DRAWINGS

[0053] Figure 1 is a flowchart of a display panel driving method provided by the embodiment of the present application;

[0054] Figure 2 is a structural schematic diagram of a display panel provided by the embodiment of the present application;

[0055] Figure 3 is Figure 2 is an equivalent circuit diagram of the display panel shown in FIG. 1;

[0056] Figure 4 is a structural schematic diagram of another display panel provided by the embodiment of the present application;

[0057] Figure 5 is Figure 4 is an equivalent circuit diagram of the display panel shown in FIG. 2;

[0058] Figure 6 is a flowchart of another display panel driving method provided by the embodiment of the present application;

[0059] Figure 7 is a structural schematic diagram of a pixel circuit in the related art;

[0060] Figure 8 is a relationship curve between the voltage actually input to the power input end of the sub-pixel, the first power voltage and the display ratio provided by the embodiment of the present application. DETAILED DESCRIPTION

[0061] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the present application and not in limitation thereof. It should also be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings rather than all the structures.

[0062] As described in the background section, in the prior display panel, under different display ratios of the display picture, there is a difference in the brightness of the sub-pixel corresponding to the same display gray scale in the display panel, which affects the display effect of the picture. The inventors have found that the reason for the above problem is that the display panel includes a plurality of sub-pixels located in the display area, and the sub-pixel includes a light emitting device and a pixel circuit for driving the light emitting device to emit light. The pixel circuit includes a first power input end, the first power input end is connected to a first power source in a non-display area, and the cathode of the light emitting device is connected to a second power source. When the display panel displays, the current flows from the first power source to the second power source through the light emitting device that is turned on, and there is a resistance in the path through which the current flows, which includes an out-of-plane resistance and an in-plane resistance. The out-of-plane resistance is the transmission resistance of the current flowing from the first power source to the first power input end of the pixel circuit in the display area, and the in-plane resistance is the parallel equivalent resistance of all the sub-pixels that are turned on in the display panel. Because the size of the in-plane resistance changes under different display ratios, the size of the current between the first power source and the second power source changes under different display ratios, the voltage drop on the out-of-plane resistance changes, so that the voltage at the first power input end of the pixel circuit is not the same for the display picture of the same display gray scale under different display ratios, which causes the brightness of the sub-pixel to be different under different display ratios of the same display gray scale, and affects the display effect.

[0063] Based on the above reasons, the embodiment of the present application provides a display panel driving method, Figure 1 is a flow chart of a display panel driving method provided by the embodiment of the present application, referring to Figure 1 The display panel driving method comprises:

[0064] Step 110, obtaining the to-be-displayed gray scale data and the to-be-displayed ratio corresponding to the to-be-displayed picture.

[0065] The to-be-displayed picture can be a picture to be displayed. For example, the to-be-displayed picture is a next frame picture at a current time node. The to-be-displayed gray scale data includes a to-be-displayed gray scale corresponding to a sub-pixel in the display panel. Specifically, the to-be-displayed gray scale data can include a to-be-displayed gray scale corresponding to each sub-pixel in the display panel. The to-be-displayed ratio corresponding to the to-be-displayed picture is positively correlated with a number of sub-pixels to be lighted at the to-be-displayed picture. That is, the more sub-pixels to be lighted at the to-be-displayed picture, the greater the to-be-displayed ratio.

[0066] Step 120: determining a compensation coefficient corresponding to the sub-pixel according to the to-be-displayed gray scale data and the to-be-displayed ratio.

[0067] As indicated above, the display gray scale of the sub-pixel and the display ratio of the display panel affect the size of the in-plane resistance, and further affect the current flowing through the out-of-plane resistance of the display panel, so that the voltage division of the out-of-plane resistance changes, and the display brightness of the sub-pixel in the display panel is affected. In this embodiment, the compensation coefficient corresponding to the sub-pixel is determined according to the to-be-displayed gray scale data and the to-be-displayed ratio. The influence of the display gray scale of the sub-pixel in the display panel and the display ratio of the display panel on the in-plane resistance is considered, and the compensation coefficient corresponding to the sub-pixel is determined according to the to-be-displayed gray scale data and the to-be-displayed ratio. The compensation coefficient needs to meet the requirement that after the brightness of the sub-pixel is compensated according to the compensation coefficient, the brightness difference of the sub-pixel at the same display gray scale is less than a set threshold when the display panel displays different display pictures at different display ratios. In some optional embodiments, the size of the compensation coefficient can ensure that the brightness difference of the sub-pixel at the same display gray scale is 0 when the display panel displays different display pictures at different display ratios after the brightness of the sub-pixel is compensated according to the compensation coefficient.

[0068] The correspondence between the to-be-displayed gray scale data, the to-be-displayed ratio, and the compensation coefficient can be obtained by experiments or simulations before step 110 is performed.

[0069] Step 130: compensating the brightness of the sub-pixel according to the compensation coefficient corresponding to the sub-pixel.

[0070] The manner of performing the brightness compensation on the sub-pixel according to the compensation coefficient corresponding to the sub-pixel can include multiple manners. In an optional embodiment, the corresponding relationship between the compensation coefficient and the compensation amount can be stored in advance; in another optional embodiment, an algorithm for calculating the compensation amount according to the compensation coefficient can be set, and the compensation amount can be calculated according to the compensation coefficient and the set algorithm after the compensation coefficient corresponding to the sub-pixel is obtained. The compensation amount can be a data voltage compensation amount corresponding to the pixel circuit of the sub-pixel, or a gray scale compensation amount. When the compensation amount is the data voltage compensation amount, the target data voltage corresponding to the sub-pixel can be determined according to the initial data voltage corresponding to the to-be-displayed gray scale of the sub-pixel and the data voltage compensation amount corresponding to the sub-pixel, and the target data voltage is provided to the pixel circuit of the sub-pixel when the to-be-displayed picture is displayed. When the compensation amount is the gray scale compensation amount, the target display gray scale corresponding to the sub-pixel can be determined according to the to-be-displayed gray scale of the sub-pixel and the gray scale compensation amount, and then the target data voltage of the sub-pixel is determined according to the target display gray scale, and the target data voltage is provided to the pixel circuit of the sub-pixel when the to-be-displayed picture is displayed.

[0071] It should be noted that in step 120, when the compensation coefficient corresponding to the sub-pixel is determined according to the to-be-displayed gray scale data and the to-be-displayed ratio, the compensation coefficient corresponding to the sub-pixel that needs to be lighted is determined according to the to-be-displayed gray scale data and the to-be-displayed ratio. In step 130, when the brightness compensation is performed on the sub-pixel according to the compensation coefficient corresponding to the sub-pixel, the brightness compensation can be performed on the sub-pixel that needs to be lighted according to the compensation coefficient corresponding to the sub-pixel that needs to be lighted. For the sub-pixel that does not need to be lighted in the to-be-displayed picture, the brightness compensation can not be performed.

[0072] The driving method of the display panel in the embodiment, by obtaining the to-be-displayed gray scale data and the to-be-displayed ratio corresponding to the to-be-displayed picture, determining the compensation coefficient corresponding to the sub-pixel according to the to-be-displayed gray scale data and the to-be-displayed ratio, and performing the brightness compensation on the sub-pixel according to the compensation coefficient corresponding to the sub-pixel. The technical scheme of the embodiment considers the factors that affect the display gray scale of the sub-pixel in the display panel and the display ratio of the display panel, which affect the brightness of the sub-pixel, and realizes the brightness compensation on the sub-pixel according to the to-be-displayed gray scale data and the to-be-displayed ratio of the to-be-displayed picture, reduces the brightness difference of the sub-pixel corresponding to the same display gray scale caused by the change of the voltage division on the out-of-plane resistance when the to-be-displayed gray scale data and / or the display ratio of the display picture is different, and improves the picture display effect.

[0073] Figure 2 is a structural schematic diagram of a display panel provided by an embodiment of the present application, Figure 3 is Figure 2 is an equivalent circuit diagram of the display panel shown in FIG. 1, Figure 2 and Figure 3The display panel includes a first power supply 20 and a second power supply 30. The first power supply 20 is connected to the power input terminals IN of the sub-pixels 10 through a total external resistor R0. Figure 2 and Figure 3 The display panel includes three primary color sub-pixels 10, i.e., a red sub-pixel 11, a green sub-pixel 11, and a blue sub-pixel 12. The corresponding light emitting devices are a red light emitting device R, a green light emitting device G, and a blue light emitting device B, respectively. The light emitting device includes a first electrode, a light emitting layer, and a second electrode arranged in a stack. The first electrode can be an anode of the light emitting device, and the second electrode can be a cathode of the light emitting device. The second electrodes of the light emitting devices of different colors are connected to each other and to the same second power supply 30. Figure 3 The pixel circuit includes a driving transistor. The first electrode of the driving transistor is the power input terminal of the pixel circuit, and the second electrode of the driving transistor is electrically connected to the first electrode of the light emitting device. Figure 2 and Figure 3 The current I flowing through the external resistor is I1+I2+I3. I is the total current flowing through the external resistor, I1 is the first total current corresponding to the red sub-pixel 11, I2 is the second total current corresponding to the green sub-pixel 11, and I3 is the third total current corresponding to the blue sub-pixel 12. Figure 2 The total proportion is equal to the proportion of the number of sub-pixels 10 to be lit in the display picture to the total number of sub-pixels 10.

[0074] Specifically, the total proportion is equal to the proportion of the number of all color sub-pixels to be lit in the display picture to the total number of all color sub-pixels. When the display proportion includes the total proportion, the driving method of the display panel includes obtaining the display gray scale data corresponding to the display picture and the total proportion; determining the compensation coefficient corresponding to the sub-pixel according to the display gray scale data and the total proportion; and performing brightness compensation on the sub-pixel according to the compensation coefficient corresponding to the sub-pixel.

[0075] When the sub-pixels 10 of different colors are connected to the same first power supply 20 and the second power supply 30, the sub-pixels 10 of different colors will affect each other. Figure 3wherein Rx represents the total in-plane resistance of the display panel, R1 represents the parallel resistance of each red sub-pixel 11 that is lit, R2 represents the parallel resistance corresponding to the green sub-pixel 11 that is lit, and R3 represents the parallel resistance corresponding to the blue sub-pixel 12 that is lit. Thus, the parallel resistance of the primary color sub-pixel 10 affects the total in-plane resistance, and in turn, the current between the first power supply 20 and the second power supply 30, so that the voltage drop across the total out-plane resistance R0 is affected, and the voltage at the power input terminal IN is equal to the first power supply voltage ELVDD minus the product of the total out-plane resistance R0 and the current flowing through the total out-plane resistance R0, and thus the actual voltage RealELVDD input to the power input terminal IN is also affected, and there is a problem that the luminance of the sub-pixel 10 is different when the same driving data, which can be a data voltage, is provided to the sub-pixel 10 of the same display gray scale in the primary color display and the white display.

[0076] Based on this, the above-mentioned driving method of the present application can also be applied to Figure 4 the display panel shown in FIG. 1. Figure 4 is another structural schematic diagram of a display panel provided by an embodiment of the present application, Figure 5 is Figure 4 is an equivalent circuit diagram of the display panel shown in FIG. 1, referring to Figure 4 and Figure 5 The display panel includes at least two sub-pixels 10 of different light emitting colors, and each sub-pixel 10 includes a light emitting device and a pixel circuit. Figure 4 and Figure 5 The display panel includes three primary color sub-pixels 10 of different light emitting colors, i.e., a red sub-pixel 11, a green sub-pixel 11, and a blue sub-pixel 12, and the corresponding light emitting devices are a red light emitting device R, a green light emitting device G, and a blue light emitting device B, respectively. The light emitting device includes a first electrode, a light emitting layer, and a second electrode arranged in a stack, wherein the first electrode can be an anode of the light emitting device, and the second electrode can be a cathode of the light emitting device. The pixel circuit is electrically connected to the first electrode of the light emitting device, and the pixel circuit includes a power input terminal IN connected to the first power supply 20, and the pixel circuit is configured to drive the light emitting device to emit light according to a power signal input by the power input terminal IN; and the second electrode of the light emitting device is connected to the second power supply 30. Figure 5 The pixel circuit includes a driving transistor, and the first electrode of the driving transistor is the power input terminal IN of the pixel circuit, and the second electrode of the driving transistor is electrically connected to the first electrode of the light emitting device.

[0077] Referring to Figure 4 and Figure 5In some optional embodiments of the present invention, the second electrodes of light-emitting devices of different colors are mutually insulated, and the second electrodes of the light-emitting devices of different colors are connected to different second power supplies 30. Specifically, the second electrode of the red light-emitting device R is connected to second power supply one 31 (the second power supply voltage provided by second power supply one 31 is ELVSS1), the second electrode of the green light-emitting device G is connected to second power supply two 32 (the second power supply voltage provided by second power supply two 32 is ELVSS2), and the second electrode of the blue light-emitting device B is connected to second power supply three 33 (the second power supply voltage provided by second power supply three 33 is ELVSS3). That is, for... Figure 4 and Figure 5 In the case of the display panel shown, the second electrodes of light-emitting devices with the same emitting color in the display panel can be connected to each other, but the second electrodes of light-emitting devices with different emitting colors are not connected. The second power supply 30 connected to the second electrodes of light-emitting devices with different emitting colors is different, and the second power supply voltage ELVSS provided by the different second power supply 30 can be different.

[0078] Continue to refer to Figure 4 and Figure 5 Optionally, the power input terminals IN of the pixel circuits connected to light-emitting devices of different colors are mutually insulated, and the first power supply 20 connected to the power input terminals IN of the pixel circuits connected to the light-emitting devices of different colors is different. Specifically, the power input terminal IN of the pixel circuit connected to the red light-emitting device R is connected to the first power supply 1 21 (the first power supply voltage provided by the first power supply 21 is ELVDD1), the power input terminal IN of the pixel circuit connected to the green light-emitting device G is connected to the first power supply 22 (the first power supply voltage provided by the first power supply 22 is ELVDD2), and the power input terminal IN of the pixel circuit connected to the blue light-emitting device B is connected to the first power supply 3 23 (the first power supply voltage provided by the first power supply 3 23 is ELVDD3). That is, for... Figure 4 and Figure 5 In the case of the display panel shown, the power input terminals of the pixel circuits connected to the light-emitting devices of the same color in the display panel can be connected to each other, but the power input terminals of the pixel circuits connected to the light-emitting devices of different colors are not connected. The first power supply 20 connected to the power input terminals of the pixel circuits connected to the light-emitting devices of different colors is different, and the first power supply voltage provided by the different first power supply 20 can be different.

[0079] The first power supply 20 corresponding to the different light-emitting color primary sub-pixels 10 is independently set, and the out-of-plane resistance corresponding to the different light-emitting color primary sub-pixels 10 is also independent (i.e., the first primary out-of-plane resistance R01 corresponding to the red sub-pixel 11, the second primary out-of-plane resistance R02 corresponding to the green sub-pixel 11, and the third primary out-of-plane resistance R03 corresponding to the blue sub-pixel 12). Referring to Figure 5 , the parallel resistance of each red sub-pixel 11 in the lighting state is the first primary in-plane resistance R1, the parallel resistance of each green sub-pixel 11 in the lighting state is the second primary in-plane resistance R2, and the parallel resistance of each blue sub-pixel 12 in the lighting state is the third primary in-plane resistance R3. When the primary in-plane resistance corresponding to one kind of primary sub-pixel 10 changes, the current on the primary out-of-plane resistance corresponding to the other color sub-pixel 10 will not be affected, i.e., the total current I1 corresponding to the red sub-pixel 11, the total current I2 corresponding to the green sub-pixel 11, and the total current I3 corresponding to the blue sub-pixel 12 will not affect each other. Therefore, when the primary in-plane resistance corresponding to one kind of primary sub-pixel 10 changes, the luminance of the primary sub-pixel 10 of the other light-emitting color at the same display gray scale can remain unchanged. The independent setting of the first power supply 20 corresponding to the different light-emitting color primary sub-pixels 10 and / or the independent setting of the second power supply 30 corresponding to the different light-emitting color primary sub-pixels 10 can reduce the mutual influence between the different light-emitting color primary sub-pixels 10, thereby reducing the luminance difference of the sub-pixels 10 corresponding to the same display gray scale in the primary color display picture and the white display picture, and improving the display effect.

[0080] For the display panel structure shown in Figure 4 and Figure 5 , the display ratio can include a sub-ratio, and the sub-ratio is equal to the ratio of the number of the same light-emitting color sub-pixels to be lighted in the display picture to the total number of the corresponding same light-emitting color sub-pixels.

[0081] The calculation of the proportion needs to consider the difference of the light emitting colors of the sub-pixels in the display panel. The display panel includes sub-pixels of at least two light emitting colors, wherein each sub-pixel of a light emitting color is referred to as a primary color sub-pixel. For example, the display panel includes red sub-pixels, green sub-pixels and blue sub-pixels, which are three primary color sub-pixels. Each primary color sub-pixel corresponds to a proportion, and for each primary color sub-pixel, the proportion corresponding to the primary color sub-pixel is equal to the proportion of the number of the primary color sub-pixels to be lighted in the to-be-displayed picture and the total number of the primary color sub-pixels. When the to-be-displayed proportion includes the proportions, the driving method of the display panel includes obtaining to-be-displayed gray scale data corresponding to a to-be-displayed picture and the proportions, wherein the to-be-displayed gray scale data includes to-be-displayed gray scales corresponding to each primary color sub-pixel; for each primary color sub-pixel, determining a compensation coefficient corresponding to the primary color sub-pixel according to the to-be-displayed gray scale corresponding to the primary color sub-pixel in the to-be-displayed gray scale data and the proportion corresponding to the primary color sub-pixel; and performing luminance compensation on the primary color sub-pixel according to the compensation coefficient corresponding to the primary color sub-pixel.

[0082] On the basis of the above technical solution, optionally, the display area of the display panel is divided into a plurality of sub-display areas; in different sub-display areas, the second electrodes of the light emitting devices of the same light emitting color are insulated from each other, and in different sub-display areas, the second electrodes of the light emitting devices of the same light emitting color are connected to different second power supplies.

[0083] And / or, in different sub-display areas, the power input ends of the pixel circuits connected to the light emitting devices of the same light emitting color are insulated from each other, and in different sub-display areas, the power input ends of the pixel circuits connected to the light emitting devices of the same light emitting color are connected to different first power supplies.

[0084] The display panel of the embodiment, in Figure 4 And Figure 5Further optimization is made to the structure of the display panel based on the display panel shown, the display area is divided into a plurality of sub-display areas, in the same sub-display area, the second electrodes of the light emitting devices of the primary color sub-pixels of the same light emitting color are connected to each other and connected to the same second power supply; in the same sub-pixel area, the second electrodes of the light emitting devices of the primary color sub-pixels of different light emitting colors are insulated from each other and connected to different second power supplies. In different sub-display areas, the second electrodes of the light emitting devices of the same light emitting color are insulated from each other, and the second power supplies to which the second electrodes of the light emitting devices of the same light emitting color are connected are different in different sub-display areas. The power input ends of the pixel circuits to which the light emitting devices of the same light emitting color are connected in the same sub-display area can also be connected to each other and connected to the same first power supply; the power input ends of the pixel circuits to which the light emitting devices of different light emitting colors are connected in the same sub-display area are insulated from each other and connected to different first power supplies. In different sub-display areas, the power input ends of the pixel circuits to which the light emitting devices of the same light emitting color are connected are insulated from each other, and the first power supplies to which the power input ends of the pixel circuits to which the light emitting devices of the same light emitting color are connected are connected are different in different sub-display areas. In this way, the influence of the luminance of the primary color sub-pixels of the same light emitting color in the display panel on each other can be reduced, and the display effect is further improved.

[0085] Figure 6 is a flowchart of another display panel driving method provided by an embodiment of the present application, referring to Figure 6 The display panel driving method comprises the following steps.

[0086] In step 210, the display luminance of the sub-pixel in a plurality of preset display proportion scenes under a preset gray scale condition is determined under a set display luminance value, and the luminance relationship with the reference display luminance of the sub-pixel under a reference display proportion is determined.

[0087] The display brightness value (DBV) corresponds to the display brightness of the maximum gray scale in the display panel. The display brightness of the maximum gray scale in the display panel changes under different DBVs. After the display brightness of the maximum gray scale in the display panel changes, the display brightness of other gray scales also changes. The display device such as a mobile phone and a computer usually includes a brightness adjustment button. The user adjusts the overall display brightness of the display device through the brightness adjustment button. Each time the brightness adjustment button is pressed, an input DBV is obtained. The DBV is set to be any value within the range of the minimum value and the maximum value of the display brightness value. The number of display brightness values can be at least two. Under each set display brightness value, the display brightness of the display panel under the preset display ratio of the preset gray scale is determined, and the brightness relationship with the reference display brightness of the display panel under the reference display ratio is determined. For example, under each set display brightness value, the display brightness of the sub-pixel under the preset display ratio of 30%, 50%, and 80% of the 255 gray scale is determined, and the brightness relationship with the reference display brightness of the sub-pixel under the reference display ratio is determined. The brightness relationship can be a proportional relationship. Optionally, the reference display ratio is 1, that is, 100%.

[0088] The brightness relationship is related to the in-plane resistance and the out-of-plane resistance of the display panel under the preset gray scale and the reference display ratio. The out-of-plane resistance is the equivalent resistance from the first power supply connected to the power input end of the sub-pixel to the display area. Because the brightness relationship is related to the in-plane resistance and the out-of-plane resistance of the display panel under the reference display ratio, the relationship between the in-plane resistance and the out-of-plane resistance of the display panel under the reference display ratio needs to be determined. Optionally, the step 210 includes:

[0089] The relationship between the in-plane resistance and the out-of-plane resistance of the display panel under the reference display ratio of the preset gray scale is determined. The brightness relationship is determined according to the relationship between the in-plane resistance and the out-of-plane resistance under the preset display ratio.

[0090] When the preset display ratio corresponds to the total ratio, the relationship between the in-plane resistance and the out-of-plane resistance includes the relationship between the total in-plane resistance and the out-of-plane resistance. When the preset display ratio corresponds to the sub-ratio of the sub-pixel of the same light-emitting color, the relationship between the in-plane resistance and the out-of-plane resistance includes the relationship between the primary color in-plane resistance and the out-of-plane resistance.

[0091] The sub-pixel can include a light-emitting device and a pixel circuit, Figure 7 is a structural schematic diagram of a pixel circuit in the related art, and reference is made to Figure 7The pixel circuit comprises a power input terminal IN, the power input terminal IN of the pixel circuit is the power input terminal IN of the sub-pixel, the pixel circuit further comprises a driving transistor DT, the source of the driving transistor DT is connected to the power input terminal IN through a transistor, the drain of the driving transistor is connected to the anode of the light emitting device through a transistor, and the cathode of the light emitting device is connected to the corresponding second power supply. The first power supply of the display device is in the non-display area, and the first power supply is connected to the power input terminal IN of the pixel circuit in the display area, wherein the power signal of the first power supply flows out from the first power supply, and the equivalent resistance in the path of transmission to the display area is the out-of-plane resistance.

[0092] When the preset display ratio corresponds to the total ratio, the reference display ratio also corresponds to the total ratio, and the in-plane resistance is the total in-plane resistance, which is the total parallel resistance of the sub-pixels of the preset gray scale in the reference display ratio scene under the preset gray scale condition. That is, when the preset display ratio corresponds to the total ratio, the total in-plane resistance is equal to the total parallel resistance of the primary color sub-pixels of all light emitting colors of the preset gray scale in the reference display ratio scene under the preset gray scale condition. For example, the primary color sub-pixels in the display panel include red sub-pixels, green sub-pixels and blue sub-pixels, and when the preset display ratio corresponds to the total ratio, the total in-plane resistance is equal to the total parallel resistance of the red sub-pixels, green sub-pixels and blue sub-pixels of the preset gray scale in the display area in the reference display ratio scene under the preset gray scale condition. When the preset display ratio corresponds to the total ratio, the display gray scale corresponding to the sub-pixel of the preset display ratio in the display picture of the preset display ratio of the preset gray scale is the preset gray scale, and the display gray scale corresponding to the other sub-pixels is 0 gray scale. For example, when the preset display ratio is 30% of the total ratio, the display gray scale of 30% of all sub-pixels in the display panel is the preset gray scale, and the display gray scale of 70% of the sub-pixels is 0 gray scale.

[0093] When the preset display ratio corresponds to the same light emitting color sub-pixel corresponding sub-ratio, the reference display ratio also corresponds to the sub-ratio, and the in-plane resistance is the primary color in-plane resistance, which is the parallel equivalent resistance of the same light emitting color sub-pixel of the preset gray scale in the reference display ratio scene under the preset gray scale condition. When the preset display ratio corresponds to the sub-ratio, the display gray scale corresponding to the sub-pixel of the preset display ratio in the display picture of the preset display ratio of the preset gray scale is the preset gray scale in the same light emitting color sub-pixel, and the display gray scale corresponding to the other sub-pixels is 0 gray scale. For example, when the preset display ratio is 30% of the red sub-pixel corresponding sub-ratio, the display gray scale of 30% of the red sub-pixels in the display panel is the preset gray scale, and the display gray scale of 70% of the red sub-pixels is 0 gray scale.

[0094] For example, the primary color sub-pixels in the display panel include red sub-pixels, green sub-pixels and blue sub-pixels, and when the preset display ratio corresponds to the proportion of the same light-emitting color sub-pixel, for the red sub-pixel, the corresponding primary color in-plane resistance is the parallel equivalent resistance of the red sub-pixel of the preset gray scale in the display area in the reference display ratio scenario under the preset gray scale condition; for the green sub-pixel, the corresponding primary color in-plane resistance is the parallel equivalent resistance of the green sub-pixel of the preset gray scale in the display area in the reference display ratio scenario under the preset gray scale condition; and for the blue sub-pixel, the corresponding primary color in-plane resistance is the parallel equivalent resistance of the blue sub-pixel of the preset gray scale in the display area in the reference display ratio scenario under the preset gray scale condition.

[0095] In the determination of the relationship between the in-plane resistance and the out-of-plane resistance of the display panel under the display picture of the preset gray scale and the reference display ratio, the relationship between the in-plane resistance and the out-of-plane resistance of the display panel can be determined according to the luminance of the sub-pixel corresponding to the display picture under the preset display ratio and the preset gray scale; and the two different preset display ratios include the reference display ratio.

[0096] The following is an example of the preset display ratio and the reference display ratio as the proportion, which is used to illustrate the luminance relationship between the display luminance of the sub-pixel under the preset display ratio and the preset gray scale and the reference display luminance of the sub-pixel under the reference display ratio.

[0097] For example, the red sub-pixel is first adjusted to the display picture of the reference display ratio of the preset gray scale in the display panel, and for example, the preset gray scale is 255 and the reference display ratio is 1. The display gray scale of all the red sub-pixels in the display panel is 255 gray scale, and the display luminance (denoted as the first luminance Lum_1) of the red sub-pixel in the display panel at this time is obtained. The display luminance can be the luminance of the sub-pixel at a set position in the display panel, or the average luminance of the red sub-pixel of 255 gray scale in the display panel.

[0098] Then, the red sub-pixel is adjusted to the display picture of the preset display ratio of the preset gray scale in the display panel, and for example, the preset gray scale is 255 and the preset display ratio is Ratio_y. The display gray scale of the red sub-pixel of the preset display ratio in the display panel is 255 gray scale, and the display gray scale of the other red sub-pixels is 0 gray scale. The display luminance (denoted as the second luminance Lum_2) of the red sub-pixel in the display panel at this time is obtained. The display luminance can be the luminance of the sub-pixel at a set position in the display panel, or the average luminance of the red sub-pixel of 255 gray scale in the display panel.

[0099] In combination with Figure 5In the equivalent circuit diagram of the display panel, the equivalent circuit diagram corresponding to the display of the red sub-pixel, the voltage actually input to the power input end of the red sub-pixel under the reference display ratio (the reference display ratio is 1, that is, 100% is taken as an example) can be calculated by formula (1):

[0100] (1)

[0101] wherein, is the voltage actually input to the first power input end of the red sub-pixel under the reference display ratio, R01 represents the out-of-plane resistance corresponding to the red sub-pixel, R1 represents the primary in-plane resistance corresponding to the red sub-pixel, ELVDD represents the first power voltage output by the first power supply, and ELVSS represents the second power voltage output by the second power supply.

[0102] Under any preset display ratio Ratio_y, the voltage actually input to the power input end of the red sub-pixel can be calculated by formula (2):

[0103] (2)

[0104] wherein, is the voltage actually input to the power input end of the red sub-pixel under the preset display ratio .

[0105] It should be noted that in the calculation of and , the second power voltage ELVSS is considered as the reference voltage 0V.

[0106] Figure 8 is the relationship curve between the voltage actually input to the power input end of the sub-pixel, the first power voltage and the display ratio provided by the embodiment of the present application. Referring to Figure 8 , the first power voltage ELVDD is fixed and unchangeable, and the voltage RealELVDD actually input to the power input end of the sub-pixel decreases with the increase of the display ratio. The curve is applicable to any primary sub-pixel.

[0107] In the pixel circuit, the luminous brightness of the light emitting device is positively related to the square of the voltage difference between the light emitting device (that is, the voltage difference between the anode and the cathode of the light emitting device). When the driving transistor drives the light emitting device to emit light, the driving transistor and the light emitting device can be regarded as equivalent resistance voltage division, therefore, the voltage difference between the light emitting device is equal to the difference between the voltage RealELVDD actually input to the power input end of the sub-pixel and the source-drain voltage difference of the driving transistor , that is, , and accordingly , i.e. the luminous brightness of the light emitting device is positively correlated with the square of the difference between the voltage RealELVDD of the power input terminal of the actual input sub-pixel and the voltage difference of the source-drain of the driving transistor . Since the driving transistor and the light emitting device can be regarded as equivalent resistances when the driving transistor drives the light emitting device to emit light, the greater the voltage RealELVDD of the power input terminal of the actual input sub-pixel, the greater the voltage difference across the light emitting device . Therefore, the luminous brightness of the light emitting device is positively correlated with the voltage RealELVDD of the power input terminal of the actual input sub-pixel, and thus .

[0108] According to the above derivation, it can be obtained that

[0109] ; (3)

[0110] According to the above formula (4), the relationship between the in-plane resistance and the out-of-plane resistance of the display panel can be obtained as

[0111] ; (4)

[0112] wherein is a preset display ratio; is the display brightness of the display panel under the reference display ratio, is the display brightness when the preset display ratio is ; R1 is the in-plane resistance, and R0 is the out-of-plane resistance. It should be noted that R1 is specifically the in-plane resistance corresponding to the display panel under the reference display ratio of the preset gray scale. When the reference display ratio is the reference total ratio, R1 is the total in-plane resistance corresponding to the display panel under the reference total ratio of the preset gray scale. When the reference display ratio is the reference partial ratio, R1 is the primary color in-plane resistance corresponding to the display panel under the reference partial ratio of the preset gray scale.

[0113] After the relationship between the in-plane resistance and the out-of-plane resistance is obtained, according to the above formula (4), the luminance relationship between the display brightness of the sub-pixel under any preset display ratio of the preset gray scale and the reference display brightness can be determined according to the relationship between the in-plane resistance and the out-of-plane resistance of the preset display ratio. The luminance relationship can be a luminance ratio, and the luminance ratio , wherein represents any preset display ratio.

[0114] Step 220, determining the compensation coefficient corresponding to the sub-pixel under the preset display ratio scene of the preset gray scale condition according to the luminance relationship.

[0115] Specifically, after the luminance relationship between the display luminance of the sub-pixel under the preset display ratio of the preset gray scale under the set display luminance value and the reference display luminance of the sub-pixel under the reference display ratio is determined, the compensation coefficient can be determined according to the luminance relationship. Optionally, when the luminance relationship is a luminance ratio, the compensation coefficient is equal to the reciprocal of the luminance ratio. The compensation coefficient The calculation formula of the compensation coefficient is as follows:

[0116] (5)

[0117] Optionally, the display picture is a monochrome display picture; and the determined compensation coefficient is a compensation coefficient corresponding to a sub-pixel of a same light-emitting color. Illustratively, the compensation coefficient corresponding to a red sub-pixel, the compensation coefficient corresponding to a green sub-pixel and the compensation coefficient corresponding to a blue sub-pixel under the preset display ratio of the preset gray scale under the set display luminance value can be calculated respectively.

[0118] Step 230: storing the compensation coefficient corresponding to the sub-pixel under the preset display ratio scenario of the preset gray scale condition.

[0119] When the compensation coefficient is stored, the compensation coefficient can be stored in the form of a data table and a graph. Specifically, the correspondence among the preset gray scale, the preset display ratio and the compensation coefficient can be stored, and under each preset gray scale, the compensation coefficients under at least two preset display ratios need to be stored, so that the compensation coefficients under different preset display ratios can be calculated by interpolation in subsequent determination.

[0120] Step 240: obtaining the to-be-displayed gray scale data and the to-be-displayed ratio corresponding to the to-be-displayed picture; this step is the same as the process of step 110 in the above embodiment, and will not be described here.

[0121] Step 250: when the to-be-displayed gray scale data matches the preset gray scale and the to-be-displayed ratio matches the preset display ratio, configuring the compensation coefficient corresponding to the preset gray scale and the preset display ratio as the compensation coefficient corresponding to the to-be-displayed gray scale data and the to-be-displayed ratio.

[0122] Optionally, under the to-be-displayed picture, the to-be-displayed gray scale corresponding to the to-be-displayed ratio of the same light-emitting color sub-pixel in the same light-emitting color sub-pixel is the same gray scale greater than 0 gray scale, and the to-be-displayed gray scale corresponding to the other same light-emitting color sub-pixel is 0 gray scale. Illustratively, under the to-be-displayed picture, the to-be-displayed gray scale corresponding to the to-be-displayed ratio of the red sub-pixel in all red sub-pixels of the display panel is the same gray scale greater than 0 gray scale, and the to-be-displayed gray scale corresponding to the red sub-pixel of (1-to-be-displayed ratio) is 0 gray scale.

[0123] For example, when the to-be-displayed proportion and the preset display proportion both correspond to a sub-proportion, the to-be-displayed gray scale data matches the preset gray scale, and the to-be-displayed proportion matches the preset display proportion, the to-be-displayed gray scale corresponding to the same color sub-pixel of the to-be-displayed proportion in the to-be-displayed gray scale data can be equal to the preset gray scale, and the to-be-displayed gray scale corresponding to other sub-pixels of the same color of the to-be-displayed proportion can be 0 gray scale. In this case, the compensation coefficient corresponding to the preset gray scale and the preset display proportion can be directly determined as the compensation coefficient corresponding to the to-be-displayed gray scale data and the to-be-displayed proportion.

[0124] In step 260, when the to-be-displayed gray scale data does not match the preset gray scale and / or the to-be-displayed proportion does not match the preset display proportion, the compensation coefficient corresponding to the to-be-displayed gray scale data and the to-be-displayed proportion is determined according to the compensation coefficient corresponding to the preset gray scale and the preset display proportion.

[0125] For example, when the to-be-displayed proportion and the preset display proportion both correspond to a sub-proportion, the to-be-displayed gray scale data does not match the preset gray scale and / or the to-be-displayed proportion does not match the preset display proportion, the to-be-displayed gray scale data can include other gray scales different from 0 gray scale and the preset gray scale, and / or the to-be-displayed gray scale data can include the preset gray scale or both the preset gray scale and 0 gray scale, but the to-be-displayed proportion is not equal to the preset display proportion. In this case, the compensation coefficient corresponding to the to-be-displayed gray scale data and the to-be-displayed proportion can be determined according to the compensation coefficient corresponding to the preset gray scale and the preset display proportion, for example, the compensation coefficient corresponding to the to-be-displayed gray scale and the to-be-displayed proportion is calculated by interpolation.

[0126] In step 270, the brightness of the sub-pixel is compensated according to the compensation coefficient corresponding to the sub-pixel. The process of this step is the same as that of step 130 in the above embodiments, and thus will not be described here.

[0127] On the basis of the above embodiments, the number of display brightness values can include at least two. The compensation coefficient corresponding to the sub-pixel under a display brightness value other than the set display brightness value is calculated by interpolation according to the compensation coefficients under at least two set display brightness values.

[0128] And / or, the number of preset gray scales under the same display brightness value includes multiple. The compensation coefficient corresponding to each display proportion under a display gray scale other than the preset gray scale under the same display brightness value is calculated by interpolation according to the compensation coefficient corresponding to the same display proportion of the preset gray scale.

[0129] On the basis of the above embodiments, in steps 110 and 240 in the above embodiments, the to-be-displayed gray scale data and the to-be-displayed proportion corresponding to the to-be-displayed picture are obtained, including: obtaining the to-be-displayed gray scale data corresponding to the to-be-displayed picture; and determining the to-be-displayed proportion according to the to-be-displayed gray scale data.

[0130] Specifically, the to-be-displayed gray scale data includes to-be-displayed gray scales corresponding to sub-pixels in the display panel, and the to-be-displayed ratio can be determined according to the to-be-displayed gray scales corresponding to the sub-pixels. As described above, the to-be-displayed ratio includes a total ratio and a sub-ratio.

[0131] Optionally, when the total ratio is determined, a ratio of a number of sub-pixels corresponding to to-be-displayed gray scales greater than the set display gray scale to a total number of sub-pixels in the to-be-displayed gray scale data can be determined as the total ratio; and when the sub-ratio is determined, a ratio of a number of sub-pixels of the same light-emitting color corresponding to to-be-displayed gray scales greater than the set display gray scale to a total number of sub-pixels of the same light-emitting color in the to-be-displayed gray scale data can be determined as the sub-ratio.

[0132] Optionally, the set display gray scale is equal to 0 gray scale. When the to-be-displayed gray scale corresponding to a sub-pixel is greater than 0 gray scale, it is proved that the sub-pixel is a sub-pixel that needs to be lightened; and when the to-be-displayed gray scale corresponding to the sub-pixel is less than or equal to 0 gray scale, it is proved that the sub-pixel is a sub-pixel that does not need to be lightened.

[0133] The embodiment of the present application also provides a display panel, which is driven by the driving method of the display panel of any of the above-mentioned embodiments of the present application.

[0134] The structure diagram of the display panel and the corresponding equivalent circuit diagram can be referred to as Figure 4 and Figure 5 Optionally, the display panel includes sub-pixels 10 of at least two light-emitting colors, the sub-pixel 10 includes a light-emitting device and a pixel circuit, the pixel circuit is electrically connected with a first electrode of the light-emitting device, the pixel circuit includes a power input end IN, the power input end IN is connected with a first power supply 20, and the pixel circuit is used for driving the light-emitting device to emit light according to a power signal input by the power input end IN; a second electrode of the light-emitting device is connected with a second power supply 30; wherein the second electrodes of the light-emitting devices of different light-emitting colors are insulated from each other, and the second power supply 30 connected with the second electrodes of the light-emitting devices of different light-emitting colors is different; and / or the power input ends IN of the pixel circuits connected with the light-emitting devices of different light-emitting colors are insulated from each other, and the first power supply 20 connected with the power input ends IN of the pixel circuits connected with the light-emitting devices of different light-emitting colors is different.

[0135] Optionally, a display area of the display panel is divided into a plurality of sub-display areas; in different sub-display areas, the second electrodes of the light-emitting devices of the same light-emitting color are insulated from each other, and the second power supply 30 connected with the second electrodes of the light-emitting devices of the same light-emitting color in the sub-display area is different; and / or in different sub-display areas, the power input ends IN of the pixel circuits connected with the light-emitting devices of the same light-emitting color are insulated from each other, and the first power supply 20 connected with the power input ends IN of the pixel circuits connected with the light-emitting devices of the same light-emitting color is different.

[0136] Note that the above merely describes preferred embodiments of the application and the principles of the technology applied. Those skilled in the art will understand that the application is not limited to the specific embodiments described herein, and that various obvious changes, modifications and substitutions can be made to the application without departing from the scope of the application. Therefore, although the application has been described in detail by the above embodiments, the application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the application, and the scope of the application is determined by the appended claims.

Claims

1. A driving method of a display panel, characterized by, include: Obtain the grayscale data and display ratio corresponding to the image to be displayed; wherein, the grayscale data to be displayed includes the grayscale corresponding to the sub-pixels in the display panel; The ratio to be displayed is positively correlated with the number of sub-pixels that need to be lit on the display panel under the image to be displayed; The compensation coefficient corresponding to the sub-pixel is determined based on the grayscale data to be displayed and the display ratio; The brightness of the sub-pixel is compensated according to the compensation coefficient corresponding to the sub-pixel.

2. The driving method of a display panel according to claim 1, wherein The display ratio includes the total ratio, which is equal to the ratio of the number of sub-pixels that need to be lit in the display image to the total number of sub-pixels. Alternatively, the display ratio may include a fractional ratio, which is equal to the ratio of the number of sub-pixels of the same luminous color that need to be lit in the display image to the total number of the corresponding sub-pixels of the same luminous color.

3. The driving method of the display panel according to claim 2, wherein Before determining the compensation coefficient corresponding to the sub-pixel based on the grayscale data to be displayed and the display ratio, the method further includes: Under a set display brightness value, the display brightness of the sub-pixel is determined in multiple preset display ratio scenarios under preset grayscale conditions, and the brightness relationship between the sub-pixel's reference display brightness under the reference display ratio is determined. Based on the brightness relationship, determine the compensation coefficient corresponding to the sub-pixel under the preset grayscale condition and the preset display ratio scene; Store the compensation coefficients corresponding to the sub-pixels under the preset grayscale conditions and the preset display ratio scenario; The brightness relationship is related to the reference display ratio scene of the display panel under the preset grayscale conditions, and the in-plane resistance and out-of-plane resistance of the display panel; the out-of-plane resistance is the equivalent resistance from the first power supply connected to the power input terminal of the sub-pixel to the display area. When the preset display ratio corresponds to the total ratio, the in-plane resistance is the total in-plane resistance, which is the parallel total resistance of the sub-pixels of the preset gray level in the display area under the preset gray level conditions and the reference display ratio scene; under the display screen corresponding to the preset display ratio scene of the preset gray level, the display gray level corresponding to the sub-pixel of the preset display ratio is the preset gray level, and the display gray level corresponding to other sub-pixels is 0 gray level; When the preset display ratio corresponds to the proportion of the same luminous color sub-pixel, the in-plane resistance is the primary color in-plane resistance, and the primary color in-plane resistance is the parallel equivalent resistance of the same luminous color sub-pixel of the preset gray level in the display area under the preset gray level conditions and the reference display ratio scene; under the display screen corresponding to the preset display ratio scene under the preset gray level conditions, among the same luminous color sub-pixels, the display gray level corresponding to the sub-pixel of the preset display ratio is the preset gray level, and the display gray level corresponding to other sub-pixels is 0 gray level.

4. The driving method of a display panel according to claim 3, wherein The baseline display scale is equal to 1.

5. The driving method of the display panel according to claim 3, wherein The step of determining the compensation coefficient corresponding to the sub-pixel based on the grayscale data to be displayed and the display ratio includes: When the grayscale data to be displayed matches the preset grayscale and the display ratio to be displayed matches the preset display ratio, the compensation coefficients corresponding to the preset grayscale and the preset display ratio are configured as the compensation coefficients corresponding to the grayscale data to be displayed and the display ratio to be displayed. When the grayscale data to be displayed does not match the preset grayscale and / or the display ratio does not match the preset display ratio, the compensation coefficients corresponding to the grayscale data to be displayed and the display ratio are determined according to the compensation coefficients corresponding to the preset grayscale and the preset display ratio.

6. The driving method of a display panel according to claim 3, wherein Under the set display brightness value, the display brightness of the sub-pixel is determined in multiple preset display ratio scenarios under preset grayscale conditions, and the brightness relationship between the sub-pixel's brightness and the reference display brightness of the sub-pixel under the reference display ratio is determined, including: Determine the relationship between the in-plane resistance and the out-of-plane resistance of the display panel under the preset grayscale reference display ratio; when the preset display ratio corresponds to the total ratio, the relationship between the in-plane resistance and the out-of-plane resistance includes the relationship between the total in-plane resistance and the out-of-plane resistance; when the preset display ratio corresponds to the fractional ratio corresponding to the sub-pixel of the same luminous color, the relationship between the in-plane resistance and the out-of-plane resistance includes the relationship between the in-plane resistance and the out-of-plane resistance of the primary color. The brightness relationship is determined by the relationship between the in-plane resistance and the out-of-plane resistance according to the preset display ratio.

7. The driving method of the display panel according to claim 6, wherein Determining the relationship between the in-plane resistance and the out-of-plane resistance of the display panel under a preset grayscale and the reference display ratio includes: The relationship between the in-plane resistance and out-of-plane resistance of the display panel is determined based on the brightness of the sub-pixels in the display images at two different preset display ratios under a preset grayscale; the two different preset display ratios include the reference display ratio.

8. The driving method for a display panel according to claim 7, characterized in that, The displayed image is a monochrome display image; the determined compensation coefficient is the compensation coefficient corresponding to the same luminous color sub-pixel.

9. The driving method for a display panel according to claim 7, characterized in that, The relationship between the in-plane resistance and the out-of-plane resistance of the display panel is as follows: ;in The preset display ratio is one of the aforementioned ratios; The display brightness of the screen at the aforementioned reference display ratio. The preset display ratio is The display brightness at that time; R1 is the in-plane resistance, and R0 is the out-of-plane resistance; The formula for calculating the compensation coefficient is as follows: ； in, Indicates the compensation coefficient. This indicates any of the preset display ratios.

10. The driving method for a display panel according to claim 2, characterized in that, The step of obtaining the grayscale data and display ratio corresponding to the image to be displayed includes: Obtain the grayscale data corresponding to the image to be displayed; The display ratio is determined based on the grayscale data to be displayed.

11. The driving method for a display panel according to claim 10, characterized in that, Determining the display ratio based on the grayscale data to be displayed includes: The ratio of the number of sub-pixels in the grayscale data to be displayed whose corresponding grayscale level is greater than the set display grayscale level to the total number of sub-pixels is determined as the total proportion. or, The ratio of the number of sub-pixels of the same luminous color corresponding to a grayscale value greater than a set display grayscale value to the total number of sub-pixels of the same luminous color value in the grayscale data to be displayed is defined as the fractional ratio.

12. The driving method for a display panel according to claim 11, characterized in that, The setting displays a grayscale value equal to 0 grayscale.

13. The driving method for a display panel according to claim 3, characterized in that, The number of set display brightness values ​​includes at least two; for other display brightness values ​​besides the set display brightness values, the compensation coefficient corresponding to the sub-pixel is calculated by interpolation based on the compensation coefficients under at least two set display brightness values; And / or, the number of preset gray levels under the same display brightness value includes multiple; the compensation coefficients corresponding to each display ratio of other display gray levels under the same display brightness value, excluding the preset gray levels, are calculated by interpolation based on the compensation coefficients corresponding to the same display ratio of the preset gray levels.

14. The driving method for a display panel according to any one of claims 1-13, characterized in that, In the image to be displayed, among the sub-pixels of the same luminous color, the gray level to be displayed corresponding to the sub-pixel of the display ratio is the same gray level greater than 0, while the gray level to be displayed corresponding to the other sub-pixels is 0.

15. A display panel, characterized in that, The display panel is driven using the driving method described in any one of claims 1-14.

16. The display panel according to claim 15, characterized in that, The display panel includes sub-pixels of at least two luminous colors. Each sub-pixel includes a light-emitting device and a pixel circuit. The pixel circuit is electrically connected to a first electrode of the light-emitting device. The pixel circuit includes a power input terminal connected to a first power source. The pixel circuit is used to drive the light-emitting device to emit light according to the power signal input from the power input terminal. The second electrode of the light-emitting device is connected to a second power source; The second electrodes of the light-emitting devices of different colors are insulated from each other, and the second power supply connected to the second electrodes of the light-emitting devices of different colors is different. And / or, the power input terminals of the pixel circuits connected to the light-emitting devices of different colors are mutually insulated, and the first power supply connected to the power input terminals of the pixel circuits connected to the light-emitting devices of different colors is different.

17. The display panel according to claim 16, characterized in that, The display panel is divided into multiple sub-display areas; In different sub-display areas, the second electrodes of the light-emitting devices of the same color are insulated from each other, and the second power supply connected to the second electrodes of the light-emitting devices of the same color in different sub-display areas is different; And / or, in different sub-display areas, the power input terminals of the pixel circuits connected to the light-emitting devices of the same color are mutually insulated, and in different sub-display areas, the first power supply connected to the power input terminals of the pixel circuits connected to the light-emitting devices of the same color is different.

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