Display panel and driving method therefor, and display apparatus

Abstract

A display panel and a driving method therefor, and a display apparatus. The driving method comprises: acquiring initial image data (step S1); and starting a uniformity adjustment method, wherein the uniformity adjustment method comprises: turning off at least some subpixel units, which have non-zero grayscales, in a display panel according to the initial image data (step S2). The display panel driving method can improve the display uniformity of a display panel.

Description

Display panel, driving method thereof, and display device Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel, a driving method thereof, and a display device. Background Art

[0002] The display panel may have poor display uniformity due to reasons such as driving transistor threshold voltage offset, light-emitting unit color crosstalk, and light-emitting unit performance variation.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0004] Summary of the Invention

[0005] According to one aspect of the present disclosure, a display panel driving method is provided, the driving method comprising:

[0006] Obtaining initial image data;

[0007] A uniformity adjustment method is started, the uniformity adjustment method comprising: turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data.

[0008] In an exemplary embodiment of the present disclosure, the display area of ​​the display panel includes a plurality of sub-display areas and sub-pixel units located in each sub-display area;

[0009] The initial image data includes a plurality of sub-image data, the sub-image data and the sub-display area are correspondingly arranged, and the sub-display area is used to display the corresponding sub-image data;

[0010] Turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data includes:

[0011] At least part of the sub-pixel units in part of the sub-display area are turned off according to the initial image data.

[0012] In an exemplary embodiment of the present disclosure, the sub-pixel unit includes a pixel driving circuit, and the pixel driving circuit includes a driving transistor;

[0013] Turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data comprises:

[0014] Obtaining a standard threshold voltage of a display panel;

[0015] acquiring threshold voltages of at least a portion of driving transistors in the sub-display area;

[0016] obtaining a reference threshold voltage corresponding to the sub-display area according to the obtained threshold voltage of the driving transistor in the sub-display area;

[0017] At least part of the sub-pixel units in the sub-display area is turned off according to the extent to which the reference threshold voltage corresponding to the sub-display area deviates from the standard threshold voltage.

[0018] In an exemplary embodiment of the present disclosure, the plurality of sub-display areas include a first sub-display area, and the color deviation of the first sub-display area is less than or equal to 2JNCD;

[0019] Get the standard threshold voltage of the display panel, including:

[0020] A reference threshold voltage of the first sub-display area is obtained as the standard threshold voltage.

[0021] In an exemplary embodiment of the present disclosure, obtaining a standard threshold voltage of a display panel includes:

[0022] The threshold voltage set by the driving transistor when obtaining gamma adjustment is the standard threshold voltage.

[0023] In an exemplary embodiment of the present disclosure, obtaining a reference threshold voltage corresponding to the sub-display area according to the obtained threshold voltage of the driving transistor in the sub-display area includes:

[0024] According to the acquired threshold voltages of the driving transistors in the sub-display area, an average value of the plurality of threshold voltages is acquired as the reference threshold voltage;

[0025] Alternatively, based on the acquired threshold voltages of the driving transistors in the sub-display area, a median value of a plurality of the threshold voltages is acquired as the reference threshold voltage.

[0026] In an exemplary embodiment of the present disclosure, when the driving transistor is an N-type transistor;

[0027] Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises:

[0028] When the reference threshold voltage is greater than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area;

[0029] When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the blue sub-pixel units in the sub-display area;

[0030] When the driving transistor is a P-type transistor;

[0031] Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises:

[0032] When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area;

[0033] When the reference threshold voltage is greater than the standard threshold voltage, at least part of the blue sub-pixel units in the sub-display area are turned off.

[0034] In an exemplary embodiment of the present disclosure, when the driving transistor is an N-type transistor;

[0035] Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises:

[0036] When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area;

[0037] When the driving transistor is a P-type transistor;

[0038] Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises:

[0039] When the reference threshold voltage is greater than the standard threshold voltage, at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area are turned off.

[0040] In an exemplary embodiment of the present disclosure, the sub-display area includes a plurality of sub-display areas, each of the sub-display areas includes M1 sub-pixel units, and turning off at least some of the sub-pixel units in the sub-display area includes:

[0041] M2 sub-pixel units in each sub-display area are turned off, wherein M2 / M1 is less than or equal to 90%.

[0042] In an exemplary embodiment of the present disclosure, the standard threshold voltage is Vth1, the reference threshold voltage is Vth2, the number of sub-pixel units in the sub-display area is X1, and the number of turned-off sub-pixel units in the sub-display area is X2;

[0043] Among them, |(Vth1-Vth2) / Vth1| and X2 / X1 are positively correlated.

[0044] In an exemplary embodiment of the present disclosure, turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data includes:

[0045] Calling a pre-stored first database, wherein the first database includes the colors and corresponding quantity ratios of sub-pixel units that need to be turned off in each sub-display area;

[0046] Sub-pixel units of corresponding colors and quantity ratios in the sub-display area are turned off according to the first database.

[0047] In an exemplary embodiment of the present disclosure, the first database is acquired through the color accuracy of each sub-display area in the display panel.

[0048] In an exemplary embodiment of the present disclosure, the turned-off sub-pixel unit is a low grayscale sub-pixel unit.

[0049] In an exemplary embodiment of the present disclosure, turning off at least part of the sub-pixel units in the sub-display area according to the initial image data includes:

[0050] A portion of the repeating units in the sub-display area is turned off according to the initial image data, wherein the repeating units include sub-pixel units of different colors.

[0051] In an exemplary embodiment of the present disclosure, the driving method further includes:

[0052] Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area;

[0053] The number of sub-pixel units in the repeating unit is determined according to the reference grayscale value, wherein the reference grayscale value and the number of sub-pixel units in the repeating unit are positively correlated.

[0054] In an exemplary embodiment of the present disclosure, turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data includes:

[0055] Obtaining the current display brightness value of the display panel;

[0056] Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area;

[0057] controlling an off ratio of sub-pixel units in the sub-display area according to the current display brightness value and the reference grayscale value, wherein the off ratio is a ratio of the number of off sub-pixel units in the sub-display area to the total number of sub-pixel units in the sub-display area;

[0058] The current display brightness value is negatively correlated with the shutdown ratio, and the reference grayscale value is negatively correlated with the shutdown ratio.

[0059] In an exemplary embodiment of the present disclosure, obtaining a reference grayscale value corresponding to the sub-display area according to the obtained grayscales of at least part of the sub-pixel units in the sub-display area includes:

[0060] According to the obtained grayscales of at least part of the sub-pixel units in the sub-display area, an average value of a plurality of the grayscales is obtained as the reference grayscale value;

[0061] Alternatively, based on the obtained grayscales of at least part of the sub-pixel units in the sub-display area, a median value of a plurality of the grayscales is obtained as the reference grayscale value.

[0062] In an exemplary embodiment of the present disclosure, the driving method further includes:

[0063] Get the current display brightness value of the display panel;

[0064] Obtaining a grayscale threshold using the current display brightness value according to a second database pre-stored in the display panel, wherein the second database includes a mapping relationship between the current display brightness value and the grayscale threshold;

[0065] Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area;

[0066] The grayscale threshold and a reference grayscale value are compared, and the uniformity adjustment method is started when the reference grayscale value is less than or equal to the grayscale threshold.

[0067] In an exemplary embodiment of the present disclosure, the display panel is driven by pure picture data of the first color, and at least part of the sub-pixel units display the first color and the second color;

[0068] Turning off at least a portion of non-zero grayscale sub-pixel units in at least a portion of the sub-display area according to the initial image data comprises:

[0069] When the initial image data includes data for driving the first color sub-pixel unit and the second color sub-pixel unit, at least part of the second color sub-pixel unit is turned off.

[0070] In an exemplary embodiment of the present disclosure, the first color is green, the second color is red, and the display panel is driven by pure picture data of the first color, and the color coordinate x of the display panel is 0.328-0.4;

[0071] Turning off at least some of the sub-pixel units of the second color includes:

[0072] More than 95% of the sub-pixel units of the second color are turned off.

[0073] In an exemplary embodiment of the present disclosure, turning off a non-zero grayscale sub-pixel unit includes:

[0074] Writing a zero grayscale data signal into a non-zero grayscale sub-pixel unit;

[0075] Alternatively, no data signal is written to the non-zero grayscale sub-pixel unit.

[0076] According to one aspect of the present disclosure, a display panel is provided, wherein the display panel includes: a plurality of sub-pixel units and a driver chip, wherein the driver chip is configured to:

[0077] Obtaining initial image data;

[0078] A uniformity adjustment method is started, the uniformity adjustment method comprising: turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data.

[0079] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0080] a source driving circuit, the source driving circuit being configured to provide a data signal to the sub-pixel unit under the control of the driving chip;

[0081] The driver chip is capable of controlling the source driver circuit to write a zero grayscale data signal into the non-zero grayscale sub-pixel unit to turn off the non-zero grayscale sub-pixel unit;

[0082] Alternatively, the driver chip can control the source driver circuit not to write a data signal to the non-zero grayscale sub-pixel unit to turn off the non-zero grayscale sub-pixel unit.

[0083] In an exemplary embodiment of the present disclosure, the display area of ​​the display panel includes a plurality of sub-display areas and sub-pixel units located in each sub-display area;

[0084] The initial image data includes a plurality of sub-image data, the sub-image data and the sub-display area are correspondingly arranged, and the sub-display area is used to display the corresponding sub-image data;

[0085] Turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data includes:

[0086] At least part of the sub-pixel units in part of the sub-display area are turned off according to the initial image data.

[0087] In an exemplary embodiment of the present disclosure, the sub-pixel unit includes a pixel driving circuit, and the pixel driving circuit includes a driving transistor;

[0088] Turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data comprises:

[0089] Obtaining a standard threshold voltage of a display panel;

[0090] acquiring threshold voltages of at least a portion of driving transistors in the sub-display area;

[0091] obtaining a reference threshold voltage corresponding to the sub-display area according to the obtained threshold voltage of the driving transistor in the sub-display area;

[0092] At least part of the sub-pixel units in the sub-display area is turned off according to the extent to which the reference threshold voltage corresponding to the sub-display area deviates from the standard threshold voltage.

[0093] In an exemplary embodiment of the present disclosure, the plurality of sub-display areas include a first sub-display area, and the color deviation of the first sub-display area is less than or equal to 2JNCD;

[0094] Get the standard threshold voltage of the display panel, including:

[0095] A reference threshold voltage of the first sub-display area is obtained as the standard threshold voltage.

[0096] In an exemplary embodiment of the present disclosure, obtaining a standard threshold voltage of a display panel includes:

[0097] The threshold voltage set by the driving transistor when obtaining gamma adjustment is the standard threshold voltage.

[0098] In an exemplary embodiment of the present disclosure, obtaining a reference threshold voltage corresponding to the sub-display area according to the obtained threshold voltage of the driving transistor in the sub-display area includes:

[0099] According to the acquired threshold voltages of the driving transistors in the sub-display area, an average value of the plurality of threshold voltages is acquired as the reference threshold voltage;

[0100] Alternatively, based on the acquired threshold voltages of the driving transistors in the sub-display area, a median value of a plurality of the threshold voltages is acquired as the reference threshold voltage.

[0101] In an exemplary embodiment of the present disclosure, when the driving transistor is an N-type transistor;

[0102] Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises:

[0103] When the reference threshold voltage is greater than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area;

[0104] When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the blue sub-pixel units in the sub-display area;

[0105] When the driving transistor is a P-type transistor;

[0106] Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises:

[0107] When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area;

[0108] When the reference threshold voltage is greater than the standard threshold voltage, at least part of the blue sub-pixel units in the sub-display area are turned off.

[0109] In an exemplary embodiment of the present disclosure, when the driving transistor is an N-type transistor;

[0110] Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises:

[0111] When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area;

[0112] When the driving transistor is a P-type transistor;

[0113] Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises:

[0114] When the reference threshold voltage is greater than the standard threshold voltage, at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area are turned off.

[0115] In an exemplary embodiment of the present disclosure, the sub-display area includes a plurality of sub-display areas, each of the sub-display areas includes M1 sub-pixel units, and turning off at least some of the sub-pixel units in the sub-display area includes:

[0116] M2 sub-pixel units in each sub-display area are turned off, wherein M2 / M1 is less than or equal to 90%.

[0117] In an exemplary embodiment of the present disclosure, the standard threshold voltage is Vth1, the reference threshold voltage is Vth2, the number of sub-pixel units in the sub-display area is X1, and the number of turned-off sub-pixel units in the sub-display area is X2;

[0118] Among them, |(Vth1-Vth2) / Vth1| and X2 / X1 are positively correlated.

[0119] In an exemplary embodiment of the present disclosure, turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data includes:

[0120] Calling a pre-stored first database, wherein the first database includes the colors and corresponding quantity ratios of sub-pixel units that need to be turned off in each sub-display area;

[0121] Sub-pixel units of corresponding colors and quantity ratios in the sub-display area are turned off according to the first database.

[0122] In an exemplary embodiment of the present disclosure, the first database is acquired through the color accuracy of each sub-display area in the display panel.

[0123] In an exemplary embodiment of the present disclosure, the turned-off sub-pixel unit is a low grayscale sub-pixel unit.

[0124] In an exemplary embodiment of the present disclosure, turning off at least part of the sub-pixel units in the sub-display area according to the initial image data includes:

[0125] A portion of the repeating units in the sub-display area is turned off according to the initial image data, wherein the repeating units include sub-pixel units of different colors.

[0126] In an exemplary embodiment of the present disclosure, the driver chip is further used for:

[0127] Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area;

[0128] The number of sub-pixel units in the repeating unit is determined according to the reference grayscale value, wherein the reference grayscale value and the number of sub-pixel units in the repeating unit are positively correlated.

[0129] In an exemplary embodiment of the present disclosure, turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data includes:

[0130] Obtaining the current display brightness value of the display panel;

[0131] Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area;

[0132] controlling an off ratio of sub-pixel units in the sub-display area according to the current display brightness value and the reference grayscale value, wherein the off ratio is a ratio of the number of off sub-pixel units in the sub-display area to the total number of sub-pixel units in the sub-display area;

[0133] The current display brightness value is negatively correlated with the shutdown ratio, and the reference grayscale value is negatively correlated with the shutdown ratio.

[0134] In an exemplary embodiment of the present disclosure, obtaining a reference grayscale value corresponding to the sub-display area according to the obtained grayscales of at least part of the sub-pixel units in the sub-display area includes:

[0135] According to the obtained grayscales of at least part of the sub-pixel units in the sub-display area, an average value of a plurality of the grayscales is obtained as the reference grayscale value;

[0136] Alternatively, based on the obtained grayscales of at least part of the sub-pixel units in the sub-display area, a median value of a plurality of the grayscales is obtained as the reference grayscale value.

[0137] In an exemplary embodiment of the present disclosure, the driver chip is further used for:

[0138] Get the current display brightness value of the display panel;

[0139] Obtaining a grayscale threshold using the current display brightness value according to a second database pre-stored in the display panel, wherein the second database includes a mapping relationship between the current display brightness value and the grayscale threshold;

[0140] Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area;

[0141] The grayscale threshold and a reference grayscale value are compared, and the uniformity adjustment method is started when the reference grayscale value is less than or equal to the grayscale threshold.

[0142] In an exemplary embodiment of the present disclosure, the display panel is driven by pure picture data of the first color, and at least part of the sub-pixel units display the first color and the second color;

[0143] Turning off at least a portion of non-zero grayscale sub-pixel units in at least a portion of the sub-display area according to the initial image data comprises:

[0144] When the initial image data includes data for driving the first color sub-pixel unit and the second color sub-pixel unit, at least part of the second color sub-pixel unit is turned off.

[0145] According to one aspect of the present disclosure, a display device is provided, comprising the above-mentioned display panel.

[0146] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0147] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0148] FIG1 is a flow chart of an exemplary embodiment of a display panel driving method disclosed herein;

[0149] FIG2 is a schematic diagram of color shift of a display panel in the related art;

[0150] FIG3 is a schematic diagram of uneven brightness of a display panel in the related art;

[0151] FIG4 is a schematic diagram showing the voltages required for each color light-emitting unit of a white screen during gamma adjustment;

[0152] FIG5 is a schematic diagram showing the voltage required for each color light-emitting unit of a white screen when the threshold voltage of the driving transistor is positively biased;

[0153] FIG6 is a schematic diagram showing the voltage required for each color light-emitting unit of a white screen when the threshold voltage of the driving transistor is negatively biased;

[0154] FIG7 is a distribution diagram of sub-pixel units in an exemplary embodiment of a display panel disclosed herein;

[0155] FIG8 is a schematic diagram showing the structure of turning off some red sub-pixel units and green sub-pixels;

[0156] FIG9 is a distribution diagram of sub-pixel units in an exemplary embodiment of a display panel disclosed herein;

[0157] FIG10 is a distribution diagram of the turned-off repeating units at higher grayscales;

[0158] FIG11 is a distribution diagram of the turned-off repeating units at lower grayscales;

[0159] FIG12 shows the maximum grayscale value of a display panel when the uniformity adjustment method is enabled at different DBVs;

[0160] FIG13 is a schematic diagram of a partial structure of a sub-pixel unit in an exemplary embodiment of a display panel disclosed herein;

[0161] FIG14 is a schematic diagram of the functional structure of an exemplary embodiment of a display panel disclosed herein. DETAILED DESCRIPTION

[0162] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0163] The terms "a", "an", and "said" are used to indicate that there are one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.

[0164] A display panel typically includes multiple sub-pixel units, each of which may include a pixel driver circuit and a light-emitting unit. The pixel driver circuit is used to provide a driving current to the light-emitting unit to drive the light-emitting unit to emit light. The pixel driver circuit includes a driver transistor and a switching transistor connected to the gate of the driver transistor. The driving current provided by the pixel driver circuit is related to the threshold of the driver transistor. Due to factors such as manufacturing processes, the thresholds of the driver transistors at different locations on the display panel vary. Furthermore, due to drift in the driver transistor threshold, the pixel driver circuits at different locations on the display panel may output different driving currents at the same grayscale, resulting in poor display uniformity. Display uniformity includes brightness uniformity and color uniformity. Furthermore, changes in the aging performance of the light-emitting units can also cause uneven display on the display panel. For example, after reliability testing, the white screen on the display panel may appear yellowish. Furthermore, factors such as color crosstalk between the light-emitting units can also cause uneven display on the display panel. For example, a pure green screen may appear reddish on the display panel.

[0165] Based on this, this exemplary embodiment first provides a display panel driving method, as shown in FIG1 , which is a flow chart of an exemplary embodiment of the display panel driving method disclosed herein. The driving method includes:

[0166] Step S1: Acquire initial image data;

[0167] Step S2: starting a uniformity adjustment method, the uniformity adjustment method comprising: turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data.

[0168] The display panel driving method provided by this exemplary embodiment can turn off some non-zero grayscale sub-pixels according to the brightness uniformity and color uniformity of the display panel. The turned-off non-zero grayscale sub-pixels can adjust the local or overall brightness deviation and color deviation of the display panel.

[0169] In this exemplary embodiment, the uniformity adjustment method can solve the problems of poor brightness uniformity and color shift at different locations on the display panel. For example, in this exemplary embodiment, the display area of ​​the display panel may include multiple sub-display areas and sub-pixel units located in each sub-display area; the initial image data includes multiple sub-image data, the sub-image data is corresponding to the sub-display area, and the sub-display area is used to display the corresponding sub-image data; turning off at least some non-zero grayscale sub-pixel units in the display panel based on the initial image data may include:

[0170] At least part of the sub-pixel units in part of the sub-display area are turned off according to the initial image data.

[0171] The display panel driving method provided by this exemplary embodiment can adjust the brightness and chromaticity of a sub-display area by turning off the non-zero grayscale sub-pixel units in some sub-display areas of the display panel, thereby making different sub-display areas of the display panel have better display uniformity.

[0172] As shown in Figure 2, a schematic diagram of color shift of a display panel in the related art is shown. The display area of ​​the display panel may include a first display area A1, a second display area A2, and a third display area A3 distributed along the length. In the white screen display state, the second display area A2 displays a white screen, the first display area A1 displays a reddish color, and the third display area A3 displays a greenish color. The uniformity adjustment method in this exemplary embodiment can divide the display panel into three sub-display areas that overlap with the first display area A1, the second display area A2, and the third display area A3. The uniformity adjustment method can turn off some red sub-pixels in the first display area A1 so that the first display area A1 displays a white screen. The uniformity adjustment method can turn off some green sub-pixels in the third display area A3 so that the third display area A3 displays a white screen. In other exemplary embodiments, the uniformity adjustment method can also divide the display panel into a larger number of sub-display areas. For example, the first display area A1 may include multiple sub-display areas, and the uniformity adjustment method can turn off different numbers of red sub-pixels based on the degree of color shift in different sub-display areas in the first display area A1.

[0173] As shown in FIG3 , a schematic diagram of uneven brightness of a display panel in the related art is shown. The display area of ​​the display panel may include a fourth display area A4, a fifth display area A5, and a sixth display area A6. Due to power line voltage drop and other factors, at the same grayscale, the actual brightness of the fourth display area A4 is greater than the actual brightness of the fifth display area A5, and the actual brightness of the sixth display area A6 is less than the actual brightness of the fifth display area A5. The uniformity adjustment method in this exemplary embodiment can divide the display area into three sub-display areas that overlap with the fourth display area A4, the fifth display area A5, and the sixth display area A6. The uniformity adjustment method can make the display brightness uniform across different areas of the display panel by turning off some red, green, and blue sub-pixel units in the fourth and fifth display areas A4 and A5. Similarly, in other exemplary embodiments, the uniformity adjustment method can also divide the display panel into a larger number of sub-display areas. For example, the fourth display area A4 may include multiple sub-display areas, and the uniformity adjustment method can turn off different numbers of sub-pixel units based on the degree of actual brightness deviation between different sub-display areas in the fourth display area A4.

[0174] It should be noted that in this exemplary embodiment, the uniformity adjustment method is to adjust the sub-pixel shutdown of each sub-display area based on the brightness difference and chromaticity difference of each sub-display area. The brightness difference and chromaticity difference of each sub-display area can be obtained through actual measurement. The display panel only needs to store the data of the sub-pixel shutdown mode corresponding to each sub-display area, and the data can be called to adjust each sub-display area when the display panel is driven. In addition, the uniformity adjustment method in this exemplary embodiment can also simultaneously turn off some sub-pixel units for the brightness deviation and chromaticity deviation of each sub-display area, so that each sub-display area has more uniform brightness and chromaticity. For example, when the fourth display area A4 emits green in the white screen state, the uniformity adjustment method can turn off a larger proportion of green sub-pixel units when adjusting the brightness of the fourth display area A4 to adjust the chromaticity at the same time.

[0175] In this exemplary embodiment, the threshold voltage of the driving transistor affects the brightness of the light-emitting unit, thereby affecting the display uniformity of the display panel. Figures 4-6 illustrate the mechanism of how the threshold offset of the driving transistor affects the brightness of the light-emitting unit when the driving transistor is an N-type transistor. Figure 4 is a schematic diagram of the voltage required for each color light-emitting unit for a white screen during gamma adjustment. Figure 5 is a schematic diagram of the voltage required for each color light-emitting unit for a white screen when the driving transistor threshold voltage is positively biased. Figure 6 is a schematic diagram of the voltage required for each color light-emitting unit for a white screen when the driving transistor threshold voltage is negatively biased. As shown in Figures 4-6, the abscissa represents the data signal voltage, and the ordinate represents the brightness of each sub-pixel unit. Curve R in each figure represents the relationship between the brightness of the red sub-pixel unit and the data signal voltage, curve G in each figure represents the relationship between the brightness of the green sub-pixel unit and the data signal voltage, and curve B in each figure represents the relationship between the brightness of the blue sub-pixel unit and the data signal voltage. The data voltages corresponding to the intersection of curves R, G, and B with the dashed lines in Figure 4 represent the data signal voltages required for each color sub-pixel unit for a white screen during gamma adjustment. The data voltages corresponding to the intersections of curves R, G, and B with the dashed lines in Figure 5 represent the data signal voltages for each color sub-pixel unit required for a white image when the threshold voltage of the driving transistor is positive. The data voltages corresponding to the intersections of curves R, G, and B with the dashed lines in Figure 6 represent the data signal voltages for each color sub-pixel unit required for a white image when the threshold voltage of the driving transistor is negative. As can be seen from Figures 4-6, because the luminous efficiency of the green and red light-emitting units is greater than that of the blue light-emitting unit, when the threshold voltage of the driving transistor is positive or negative, thereby affecting the drive current, the brightness of the green and red light-emitting units varies more than that of the blue light-emitting unit. For example, in an embodiment where the driving transistor is an N-type transistor, when the threshold voltage of the driving transistor is positive, the output current of the pixel driving circuit decreases, the brightness of the light-emitting unit decreases, and the brightness of the green and red light-emitting units varies significantly, resulting in a yellowish tint when the display panel displays a white image. When the threshold voltage of the driving transistor is negative, the output current of the pixel driving circuit increases, the brightness of the light-emitting unit increases, and the brightness of the green and red light-emitting units varies significantly, resulting in a greenish tint when the display panel displays a white image.

[0176] In this exemplary embodiment, turning off at least a portion of non-zero grayscale sub-pixel units in the sub-display area according to the initial image data may include:

[0177] Obtaining a standard threshold voltage of a display panel;

[0178] acquiring threshold voltages of at least a portion of driving transistors in the sub-display area;

[0179] obtaining a reference threshold voltage corresponding to the sub-display area according to the obtained threshold voltage of the driving transistor in the sub-display area;

[0180] At least part of the sub-pixel units in the sub-display area is turned off according to the extent to which the reference threshold voltage corresponding to the sub-display area deviates from the standard threshold voltage.

[0181] In this exemplary embodiment, the standard threshold voltage of the display panel can represent the threshold voltage of the driving transistor before threshold shift. For example, obtaining the standard threshold voltage of the display panel can include obtaining the threshold voltage set by the driving transistor during gamma adjustment as the standard threshold voltage. The reference threshold voltage corresponding to the sub-display area can represent the overall state of the threshold voltage of the driving transistor in the sub-display area. For example, obtaining the reference threshold voltage corresponding to the sub-display area based on the obtained threshold voltage of the driving transistor in the sub-display area can include obtaining the average of multiple threshold voltages based on the obtained threshold voltage of the driving transistor in the sub-display area as the reference threshold voltage; or obtaining the median of multiple threshold voltages based on the obtained threshold voltage of the driving transistor in the sub-display area as the reference threshold voltage. This exemplary embodiment switches off a preset number of sub-pixels of a predetermined color in the sub-display area based on the degree to which the reference threshold voltage corresponding to the sub-display area deviates from the standard threshold voltage, thereby adjusting the color shift in the sub-display area.

[0182] In this exemplary embodiment, obtaining the threshold voltage of at least part of the driving transistors in the sub-display area may include: obtaining the threshold voltage of all the driving transistors in the sub-display area. The threshold voltage of the driving transistor can be obtained in real time during the use of the display panel. For example, the threshold voltage of the driving transistor can be obtained when the display panel is turned on or off. It should be understood that in other exemplary embodiments, in order to reduce the computational load of the display panel, only the threshold voltage of part of the driving transistors in the sub-display area may be randomly obtained. In addition, in order to improve the accuracy of the reference threshold voltage in characterizing the overall state of the threshold voltage of the driving transistor in the sub-display area, one or more minimum values ​​and one or more maximum values ​​in the threshold voltage may also be eliminated when calculating the reference threshold voltage.

[0183] It should be understood that in other exemplary embodiments, obtaining the reference threshold voltage of the sub-display area may also be obtained by other means. For example, in this exemplary embodiment, the plurality of sub-display areas include a first sub-display area, and the color deviation of the first sub-display area is less than or equal to 2JNCD (Just Noticeable Color Difference). For example, the color deviation of the first sub-display area may be equal to 0.1JNCD, 0.5JNCD, 1JNCD, or 2JNCD. Obtaining the standard threshold voltage of the display panel may include: obtaining the reference threshold voltage of the first sub-display area as the standard threshold voltage of the display panel.

[0184] In this exemplary embodiment, a first sub-display area with minimal color shift in the display panel can be detected through actual detection. The first sub-display area can be located in the center of the display panel. The reference threshold voltage in the first sub-display area with minimal color shift is then set as the standard threshold voltage of the display panel. The location of the first sub-display area can be pre-written into the display panel. During the display panel driving process, the threshold voltage of the drive transistor in the first sub-display area can be obtained to determine the standard threshold voltage.

[0185] In this exemplary embodiment, when the driving transistor is an N-type transistor, turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage may include:

[0186] When the reference threshold voltage is greater than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area;

[0187] When the reference threshold voltage is lower than the standard threshold voltage, at least part of the blue sub-pixel units in the sub-display area are turned off.

[0188] As shown in Figures 7 and 8, Figure 7 is a distribution diagram of sub-pixel units in an exemplary embodiment of the display panel disclosed herein, and Figure 8 is a schematic diagram of the structure of partially turned-off red and green sub-pixels. R represents a red sub-pixel unit, G represents a green sub-pixel unit, and B represents a blue sub-pixel unit. Relative to Figure 7, the sub-pixel units not shown in Figure 8 represent turned-off sub-pixel units. It should be understood that this driving method can also be applied to display panels with other pixel structures. For example, this driving method can also be applied to real RGB pixel distributions.

[0189] In this exemplary embodiment, when the driving transistor is an N-type transistor and the reference threshold voltage is greater than the standard threshold voltage, the driving current output by the pixel driving circuit is generally small, and the sub-display area tends to be yellow when displaying a white picture, so that the color deviation of the sub-display area can be adjusted by turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area; when the driving transistor is an N-type transistor and the reference threshold voltage is less than the standard threshold voltage, the driving current output by the pixel driving circuit is generally large, and the sub-display area tends to be green when displaying a white picture, so that the color deviation of the sub-display area can be adjusted by turning off at least part of the blue sub-pixel units in the sub-display area.

[0190] When the driving transistor is a P-type transistor: turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage, comprising:

[0191] When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area;

[0192] When the reference threshold voltage is greater than the standard threshold voltage, at least part of the blue sub-pixel units in the sub-display area are turned off.

[0193] In this exemplary embodiment, when the driving transistor is a P-type transistor and the reference threshold voltage is lower than the standard threshold voltage, the driving current output by the pixel driving circuit is generally smaller, and the sub-display area tends to be yellowish when displaying a white picture, thereby adjusting the color deviation of the sub-display area by turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area; when the driving transistor is a P-type transistor and the reference threshold voltage is higher than the standard threshold voltage, the driving current output by the pixel driving circuit is generally larger, and the sub-display area tends to be green when displaying a white picture, thereby adjusting the color deviation of the sub-display area by turning off at least part of the blue sub-pixel units in the sub-display area.

[0194] The shift in the threshold voltage of the driving transistor can also cause brightness differences between different sub-display areas. In this exemplary embodiment, when the driving transistor is an N-type transistor, turning off at least some sub-pixel units in the sub-display area based on the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage may include:

[0195] When the reference threshold voltage is lower than the standard threshold voltage, at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area are turned off.

[0196] In this exemplary embodiment, when the driving transistor is an N-type transistor and the reference threshold voltage is less than the standard threshold voltage, the driving current output by the pixel driving circuit is generally larger, thereby reducing the brightness of the sub-display area by turning off the red sub-pixel unit, the green sub-pixel unit, and the blue sub-pixel unit.

[0197] When the driving transistor is a P-type transistor, turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage may include:

[0198] When the reference threshold voltage is greater than the standard threshold voltage, at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area are turned off.

[0199] In this exemplary embodiment, when the driving transistor is a P-type transistor and the reference threshold voltage is greater than the standard threshold voltage, the driving current output by the pixel driving circuit is generally larger, thereby reducing the brightness of the sub-display area by turning off the red sub-pixel unit, the green sub-pixel unit, and the blue sub-pixel unit.

[0200] In this exemplary embodiment, the sub-display area may include a plurality of sub-display areas, each of which includes M1 sub-pixel units. Turning off at least some of the sub-pixel units in the sub-display area includes:

[0201] M2 sub-pixel units in each sub-display area are turned off, where M2 / M1 is less than or equal to 90%. For example, M2 / M1 can be equal to 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, etc. In this exemplary embodiment, the driving method divides the sub-display area into multiple sub-display areas. When turning off the sub-pixel units in a sub-display area, less than a preset proportion of the sub-pixel units in the sub-display area can be turned off. This setting can prevent the turned-off sub-pixel units from being concentrated in one area, thereby improving the uniformity of the display panel.

[0202] In this exemplary embodiment, the standard threshold voltage is Vth1, the reference threshold voltage is Vth2, the number of sub-pixel units in the sub-display area is X1, and the number of sub-pixel units that are turned off in the sub-display area is X2. Here, |(Vth1-Vth2) / Vth1| and X2 / X1 may be positively correlated. That is, the greater the deviation of the reference threshold voltage from the standard threshold voltage in the sub-display area, the greater the number of sub-pixel units that need to be turned off.

[0203] In other exemplary embodiments, the colors and corresponding numbers of sub-pixel units that need to be turned off in each sub-display area may be pre-stored in a first database in the display panel. Turning off at least some of the sub-pixel units with non-zero grayscale in the sub-display area according to the initial image data may include:

[0204] Calling a pre-stored first database, wherein the first database includes the colors and corresponding quantity ratios of sub-pixel units that need to be turned off in each sub-display area;

[0205] Sub-pixel units of corresponding colors and quantity ratios in the sub-display area are turned off according to the first database.

[0206] In this exemplary embodiment, the first database can be obtained by actually measuring the color accuracy of each sub-display area in the display panel.

[0207] In this exemplary embodiment, the sub-pixel unit that is turned off may be a low-grayscale sub-pixel unit. Since the driving current of the low-grayscale sub-pixel unit is small, the low-grayscale sub-pixel unit is most likely to have color shift problems due to reasons such as threshold, and the low-grayscale sub-pixel unit has less impact on the overall brightness of the sub-display area. Therefore, in this exemplary embodiment, the low-grayscale sub-pixel unit can be turned off preferentially. The low grayscale can be a grayscale with a grayscale less than a preset value. The preset value can be set according to actual conditions, and the preset value can be adjusted in real time during the driving process of the display panel. For example, when the proportion of sub-pixel units that need to be turned off is high, the preset value can be increased, and when the proportion of sub-pixel units that need to be turned off is low, the preset value can be decreased. In a display panel with a maximum grayscale of 255 grayscales, the preset value can be greater than or equal to 2 and less than or equal to 60. For example, the preset value can be 2, 20, 30, 40, 50, 60, etc.

[0208] In this exemplary embodiment, turning off at least part of the sub-pixel units in the sub-display area according to the initial image data may include:

[0209] A portion of the repeating units in the sub-display area is turned off according to the initial image data, wherein the repeating units include sub-pixel units of different colors.

[0210] In this exemplary embodiment, the repeating unit can be used as the minimum off-unit. Since the repeating unit includes sub-pixel units of different colors, this setting can make the off sub-pixel units of the same color distributed in different areas, thereby avoiding serious color deviation of the display panel.

[0211] In this exemplary embodiment, the uniformity adjustment method may further include:

[0212] Acquire the grayscale of at least part of the sub-pixel units in the sub-display area according to the sub-image data, and acquire the reference grayscale value corresponding to the sub-display area according to the acquired grayscale of at least part of the sub-pixel units in the sub-display area;

[0213] The number of sub-pixel units in the repeating unit is determined according to the reference grayscale value, wherein the reference grayscale value may be positively correlated with the number of sub-pixel units in the repeating unit.

[0214] In this exemplary embodiment, obtaining a reference grayscale value corresponding to the sub-display area according to the obtained grayscales of at least part of the sub-pixel units in the sub-display area may include:

[0215] According to the obtained grayscales of at least part of the sub-pixel units in the sub-display area, an average value of a plurality of the grayscales is obtained as the reference grayscale value;

[0216] Alternatively, based on the obtained grayscales of at least part of the sub-pixel units in the sub-display area, a median value of a plurality of the grayscales is obtained as the reference grayscale value.

[0217] In this exemplary embodiment, the reference grayscale value represents the average grayscale value in the sub-display area. The larger the reference grayscale value in the sub-display area, the more sub-pixel units need to be turned off. Accordingly, without changing the number of turned-off repeating units, the more sub-pixel units included in the repeating unit. This setting does not change the number of turned-off repeating units, thereby reducing the computational load on the display panel.

[0218] As shown in Figures 9-11, Figure 9 is a distribution diagram of sub-pixel units in an exemplary embodiment of the display panel of the present disclosure, Figure 10 is a distribution diagram of turned-off repeating units at higher grayscales, and Figure 11 is a distribution diagram of turned-off repeating units at lower grayscales. As shown in Figures 9-11, R represents a red sub-pixel unit, G represents a green sub-pixel unit, and B represents a blue sub-pixel unit. The square with a background pattern represents a turned-off sub-pixel unit. As shown in Figure 10, at a display brightness value of 10 grayscales at 1 nit, the repeating unit C1 includes one red sub-pixel unit, one blue sub-pixel unit, and two green sub-pixel units. As shown in Figure 11, at a display brightness value of 5 grayscales at 1 nit, the repeating unit C2 includes one red sub-pixel unit, one blue sub-pixel unit, and one green sub-pixel unit.

[0219] It should be noted that turning off at least part of the sub-pixel units in the sub-display area according to the initial image data may include turning off the repeating unit and turning off the single sub-pixel unit.

[0220] The display brightness value (DBV) and reference grayscale value of the display panel will affect the number of sub-pixel units that need to be turned off. In this exemplary embodiment, turning off at least some of the sub-pixel units with non-zero grayscale in the sub-display area according to the initial image data may include:

[0221] Obtaining the current display brightness value of the display panel;

[0222] Acquiring grayscales of at least some sub-pixel units in the sub-display area, and acquiring a reference grayscale value corresponding to the sub-display area based on the acquired grayscales of at least some sub-pixel units in the sub-display area;

[0223] controlling an off ratio of sub-pixel units in the sub-display area according to the current display brightness value and the reference grayscale value, wherein the off ratio is a ratio of the number of off sub-pixel units in the sub-display area to the total number of sub-pixel units in the sub-display area;

[0224] The current display brightness value is negatively correlated with the shutdown ratio, and the reference grayscale value is negatively correlated with the shutdown ratio.

[0225] This exemplary embodiment obtains the ratio of the number of sub-pixel units that need to be turned off according to the current display brightness value and the reference grayscale value, so that the display uniformity of the display panel can be accurately adjusted.

[0226] In this exemplary embodiment, the switching transistor in the pixel driving circuit has a certain off-state leakage current. When the grayscale of the sub-pixel unit is low, the driving current output by the pixel driving circuit is also low. The leakage current of the switching transistor has a particularly significant impact on the brightness of the low-grayscale sub-pixel unit. In this exemplary embodiment, the driving method further includes:

[0227] Get the current display brightness value of the display panel;

[0228] Obtaining a grayscale threshold using the current display brightness value according to a second database pre-stored in the display panel, wherein the second database includes a mapping relationship between the current display brightness value and the grayscale threshold;

[0229] Acquiring grayscales of at least some sub-pixel units in the sub-display area, and acquiring a reference grayscale value corresponding to the sub-display area based on the acquired grayscales of at least some sub-pixel units in the sub-display area;

[0230] The grayscale threshold and a reference grayscale value are compared, and the uniformity adjustment method is started when the reference grayscale value is less than or equal to the grayscale threshold.

[0231] In this exemplary embodiment, the uniformity adjustment method may be started when the reference grayscale value is less than or equal to the grayscale threshold, thereby avoiding the influence of the uniformity adjustment method on normal display.

[0232] In this exemplary embodiment, the maximum brightness for enabling the uniformity adjustment method can be obtained based on the display panel's shielding length and width, resolution, R, G, and B sub-pixel unit color coordinates, R, G, and B sub-pixel unit luminous efficiency, white point color coordinates, white point brightness, and R, G, and B sub-pixel unit aperture ratio. Based on the maximum brightness, the maximum grayscale value for enabling the uniformity adjustment method at each display brightness value can be obtained.

[0233] As shown in FIG12 , it is the maximum grayscale value of a display panel when the uniformity adjustment method is enabled at different DBVs.

[0234] In this exemplary embodiment, as shown in FIG13 , it is a schematic diagram of a partial structure of a sub-pixel unit in an exemplary embodiment of the display panel disclosed herein. Among them, Anode is the anode of the light-emitting unit, PDL is the pixel definition layer, R1 is the light-emitting layer of the red light-emitting unit, and G1 is the light-emitting layer of the green light-emitting unit. The display panel can form a blue light-emitting unit, a red light-emitting unit R, and a green light-emitting unit G in sequence using an evaporation process. Part of the green light-emitting unit G is located on the red light-emitting unit R, which causes the display panel to be reddish when displaying a pure green picture. In this exemplary embodiment, when the display panel is driven by pure picture data of the first color, at least part of the sub-pixel units display the first color and the second color;

[0235] Turning off at least a portion of the sub-pixel units with non-zero grayscale in at least a portion of the sub-display area according to the initial image data may further include:

[0236] When the initial image data includes data for driving the first color sub-pixel unit and the second color sub-pixel unit, at least part of the second color sub-pixel unit is turned off.

[0237] In this exemplary embodiment, the first color may be green and the second color may be red. In this exemplary embodiment, the color shift may be improved by turning off the sub-pixel unit of the second color. It should be understood that in other exemplary embodiments, the first color and the second color may also be other colors.

[0238] In this exemplary embodiment, when the display panel is driven by green pure picture data and the color coordinate x of the display panel is 0.328-0.4, more than 95% of the red sub-pixel units can be turned off. For example, 95% of the red sub-pixel units, 96% of the red sub-pixel units, 97% of the red sub-pixel units, 98% of the red sub-pixel units, 99% of the red sub-pixel units, and 100% of the red sub-pixel units can be turned off.

[0239] In this exemplary embodiment, turning off a non-zero grayscale sub-pixel unit may include:

[0240] Writing a zero grayscale data signal into a non-zero grayscale sub-pixel unit;

[0241] Alternatively, no data signal is written to the non-zero grayscale sub-pixel unit.

[0242] In this exemplary embodiment, when turning off sub-pixel units, the sub-pixel units can be turned off randomly according to the colors and corresponding proportions of the sub-pixel units as needed, or the sub-pixel units at preset positions can be turned off according to the colors and corresponding proportions of the sub-pixel units as needed.

[0243] This exemplary embodiment also provides a display panel that can execute the above-mentioned driving method. FIG14 shows a functional structure diagram of an exemplary embodiment of a display panel disclosed herein. The display panel includes: a plurality of sub-pixel units Pix and a driver chip DIC. The driver chip DIC can be used to:

[0244] Obtaining initial image data;

[0245] A uniformity adjustment method is started, the uniformity adjustment method comprising: turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data.

[0246] In this exemplary embodiment, the driving chip DIC can also execute all the above-mentioned driving methods.

[0247] This exemplary embodiment also provides a display device, which includes the above-mentioned display panel. The display device can be a mobile phone, a tablet computer, a television, or other display device.

[0248] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing what is disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the claims.

[0249] The drawings in this disclosure only relate to the structures involved in this disclosure, and other structures may refer to the general design. In the absence of conflict, the embodiments of this disclosure and the features in the embodiments may be combined with each other to obtain new embodiments. It should be understood by those skilled in the art that the technical solutions of this disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of this disclosure, and should be included in the scope of the claims of this disclosure.

[0250] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display panel driving method, wherein: The driving method includes: Obtaining initial image data; A uniformity adjustment method is started, the uniformity adjustment method comprising: turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data.

2. The display panel driving method according to claim 1, wherein: The display area of ​​the display panel includes a plurality of sub-display areas and sub-pixel units located in each sub-display area; The initial image data includes a plurality of sub-image data, the sub-image data and the sub-display area are correspondingly arranged, and the sub-display area is used to display the corresponding sub-image data; Turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data includes: At least part of the sub-pixel units in part of the sub-display area are turned off according to the initial image data.

3. The display panel driving method according to claim 2, wherein: The sub-pixel unit includes a pixel driving circuit, and the pixel driving circuit includes a driving transistor; Turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data comprises: Obtaining a standard threshold voltage of a display panel; acquiring threshold voltages of at least a portion of driving transistors in the sub-display area; obtaining a reference threshold voltage corresponding to the sub-display area according to the obtained threshold voltage of the driving transistor in the sub-display area; At least part of the sub-pixel units in the sub-display area is turned off according to the extent to which the reference threshold voltage corresponding to the sub-display area deviates from the standard threshold voltage.

4. The display panel driving method according to claim 3, wherein: The plurality of sub-display areas include a first sub-display area, wherein a color deviation of the first sub-display area is less than or equal to 2JNCD; Get the standard threshold voltage of the display panel, including: A reference threshold voltage of the first sub-display area is obtained as the standard threshold voltage.

5. The display panel driving method according to claim 3, wherein: Get the standard threshold voltage of the display panel, including: The threshold voltage set by the driving transistor when obtaining gamma adjustment is the standard threshold voltage.

6. The display panel driving method according to claim 3, wherein: Acquiring a reference threshold voltage corresponding to the sub-display area according to the acquired threshold voltage of the driving transistor in the sub-display area, comprising: According to the acquired threshold voltages of the driving transistors in the sub-display area, an average value of the plurality of threshold voltages is acquired as the reference threshold voltage; Alternatively, based on the acquired threshold voltages of the driving transistors in the sub-display area, a median value of a plurality of the threshold voltages is acquired as the reference threshold voltage.

7. The display panel driving method according to claim 3, wherein: When the driving transistor is an N-type transistor; Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises: When the reference threshold voltage is greater than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area; When the reference threshold voltage is lower than the standard threshold voltage, at least part of the blue sub-pixel units in the sub-display area are turned off.

8. The display panel driving method according to claim 3, wherein: When the driving transistor is a P-type transistor; Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises: When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area; When the reference threshold voltage is greater than the standard threshold voltage, at least part of the blue sub-pixel units in the sub-display area are turned off.

9. The display panel driving method according to claim 3, wherein: When the driving transistor is an N-type transistor; Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises: When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area; When the driving transistor is a P-type transistor; Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises: When the reference threshold voltage is greater than the standard threshold voltage, at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area are turned off.

10. The display panel driving method according to claim 3, wherein: The sub-display area includes a plurality of sub-display areas, each of the sub-display areas includes M1 sub-pixel units, and turning off at least part of the sub-pixel units in the sub-display area includes: M2 sub-pixel units in each sub-display area are turned off, wherein M2 / M1 is less than or equal to 90%.

11. The display panel driving method according to claim 3, wherein: The standard threshold voltage is Vth1, the reference threshold voltage is Vth2, the number of sub-pixel units in the sub-display area is X1, and the number of turned-off sub-pixel units in the sub-display area is X2; Among them, |(Vth1-Vth2) / Vth1| and X2 / X1 are positively correlated.

12. The display panel driving method according to claim 2, wherein: Turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data comprises: Calling a pre-stored first database, wherein the first database includes the colors and corresponding quantity ratios of sub-pixel units that need to be turned off in each sub-display area; Sub-pixel units of corresponding colors and quantity ratios in the sub-display area are turned off according to the first database.

13. The display panel driving method according to claim 12, wherein: The first database is obtained through the color accuracy of each sub-display area in the display panel.

14. The display panel driving method according to any one of claims 2 to 13, wherein: The sub-pixel unit that is turned off is a low grayscale sub-pixel unit.

15. The display panel driving method according to any one of claims 2 to 13, wherein: Turning off at least part of the sub-pixel units in the sub-display area according to the initial image data comprises: A portion of the repeating units in the sub-display area is turned off according to the initial image data, wherein the repeating units include sub-pixel units of different colors.

16. The display panel driving method according to claim 15, wherein: The uniformity adjustment method further comprises: Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area; The number of sub-pixel units in the repeating unit is determined according to the reference grayscale value, wherein the reference grayscale value and the number of sub-pixel units in the repeating unit are positively correlated.

17. The display panel driving method according to any one of claims 2 to 13, wherein: Turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data comprises: Obtaining the current display brightness value of the display panel; Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area; controlling an off ratio of sub-pixel units in the sub-display area according to the current display brightness value and the reference grayscale value, wherein the off ratio is a ratio of the number of off sub-pixel units in the sub-display area to the total number of sub-pixel units in the sub-display area; The current display brightness value is negatively correlated with the shutdown ratio, and the reference grayscale value is negatively correlated with the shutdown ratio.

18. The display panel driving method according to claim 16 or 17, wherein: Obtaining a reference grayscale value corresponding to the sub-display area according to the obtained grayscales of at least part of the sub-pixel units in the sub-display area, comprising: According to the obtained grayscales of at least part of the sub-pixel units in the sub-display area, an average value of a plurality of the grayscales is obtained as the reference grayscale value; Alternatively, based on the obtained grayscales of at least part of the sub-pixel units in the sub-display area, a median value of a plurality of the grayscales is obtained as the reference grayscale value.

19. The display panel driving method according to any one of claims 2 to 13, wherein: The driving method further includes: Get the current display brightness value of the display panel; Obtaining a grayscale threshold using the current display brightness value according to a second database pre-stored in the display panel, wherein the second database includes a mapping relationship between the current display brightness value and the grayscale threshold; Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area; The grayscale threshold and a reference grayscale value are compared, and the uniformity adjustment method is started when the reference grayscale value is less than or equal to the grayscale threshold.

20. The display panel driving method according to claim 2, wherein: The display panel is driven by pure picture data of the first color, so that at least part of the sub-pixel units display the first color and the second color; Turning off at least a portion of non-zero grayscale sub-pixel units in at least a portion of the sub-display area according to the initial image data comprises: When the initial image data includes data for driving the first color sub-pixel unit and the second color sub-pixel unit, at least part of the second color sub-pixel unit is turned off.

21. The display panel driving method according to claim 20, wherein: The first color is green, the second color is red, and the display panel is driven by pure picture data of the first color, and the color coordinate x of the display panel is 0.328-0.4; Turning off at least some of the sub-pixel units of the second color includes: More than 95% of the sub-pixel units of the second color are turned off.

22. The display panel driving method according to any one of claims 1 to 13, wherein: Turning off a non-zero grayscale sub-pixel unit, comprising: Writing a zero grayscale data signal into a non-zero grayscale sub-pixel unit; Alternatively, no data signal is written to the non-zero grayscale sub-pixel unit.

23. A display panel, wherein: The display panel includes: a plurality of sub-pixel units; Driver chip for: Obtaining initial image data; A uniformity adjustment method is started, the uniformity adjustment method comprising: turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data.

24. The display panel according to claim 23, wherein: The display panel further includes: a source driving circuit, the source driving circuit being configured to provide a data signal to the sub-pixel unit under the control of the driving chip; The driver chip is capable of controlling the source driver circuit to write a zero grayscale data signal into the non-zero grayscale sub-pixel unit to turn off the non-zero grayscale sub-pixel unit; Alternatively, the driver chip can control the source driver circuit not to write a data signal to the non-zero grayscale sub-pixel unit to turn off the non-zero grayscale sub-pixel unit.

25. The display panel according to claim 23, wherein: The display area of ​​the display panel includes a plurality of sub-display areas and sub-pixel units located in each sub-display area; The initial image data includes a plurality of sub-image data, the sub-image data and the sub-display area are correspondingly arranged, and the sub-display area is used to display the corresponding sub-image data; Turning off at least a portion of non-zero grayscale sub-pixel units in the display panel according to the initial image data includes: At least part of the sub-pixel units in part of the sub-display area are turned off according to the initial image data.

26. The display panel according to claim 25, wherein: The sub-pixel unit includes a pixel driving circuit, and the pixel driving circuit includes a driving transistor; Turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data comprises: Obtaining a standard threshold voltage of a display panel; acquiring threshold voltages of at least a portion of driving transistors in the sub-display area; obtaining a reference threshold voltage corresponding to the sub-display area according to the obtained threshold voltage of the driving transistor in the sub-display area; At least part of the sub-pixel units in the sub-display area is turned off according to the extent to which the reference threshold voltage corresponding to the sub-display area deviates from the standard threshold voltage.

27. The display panel according to claim 26, wherein: The plurality of sub-display areas include a first sub-display area, wherein a color deviation of the first sub-display area is less than or equal to 2JNCD; Get the standard threshold voltage of the display panel, including: A reference threshold voltage of the first sub-display area is obtained as the standard threshold voltage.

28. The display panel according to claim 26, wherein: Get the standard threshold voltage of the display panel, including: The threshold voltage set by the driving transistor when obtaining gamma adjustment is the standard threshold voltage.

29. The display panel according to claim 26, wherein: Acquiring a reference threshold voltage corresponding to the sub-display area according to the acquired threshold voltage of the driving transistor in the sub-display area, comprising: According to the acquired threshold voltages of the driving transistors in the sub-display area, an average value of the plurality of threshold voltages is acquired as the reference threshold voltage; Alternatively, based on the acquired threshold voltages of the driving transistors in the sub-display area, a median value of a plurality of the threshold voltages is acquired as the reference threshold voltage.

30. The display panel according to claim 26, wherein When the driving transistor is an N-type transistor; Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises: When the reference threshold voltage is greater than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area; When the reference threshold voltage is lower than the standard threshold voltage, at least part of the blue sub-pixel units in the sub-display area are turned off.

31. The display panel according to claim 26, wherein: When the driving transistor is a P-type transistor; Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises: When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the red sub-pixel units and the green sub-pixel units in the sub-display area; When the reference threshold voltage is greater than the standard threshold voltage, at least part of the blue sub-pixel units in the sub-display area are turned off.

32. The display panel according to claim 26, wherein: When the driving transistor is an N-type transistor; Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises: When the reference threshold voltage is lower than the standard threshold voltage, turning off at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area; When the driving transistor is a P-type transistor; Turning off at least part of the sub-pixel units in the sub-display area according to the degree to which the reference threshold voltage in the sub-display area deviates from the standard threshold voltage comprises: When the reference threshold voltage is greater than the standard threshold voltage, at least part of the red sub-pixel units, the green sub-pixel units, and the blue sub-pixel units in the sub-display area are turned off.

33. The display panel according to claim 26, wherein: The sub-display area includes a plurality of sub-display areas, each of the sub-display areas includes M1 sub-pixel units, and turning off at least part of the sub-pixel units in the sub-display area includes: M2 sub-pixel units in each sub-display area are turned off, wherein M2 / M1 is less than or equal to 90%.

34. The display panel according to claim 26, wherein: The standard threshold voltage is Vth1, the reference threshold voltage is Vth2, the number of sub-pixel units in the sub-display area is X1, and the number of turned-off sub-pixel units in the sub-display area is X2; Among them, |(Vth1-Vth2) / Vth1| and X2 / X1 are positively correlated.

35. The display panel according to claim 25, wherein: Turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data comprises: Calling a pre-stored first database, wherein the first database includes the colors and corresponding quantity ratios of sub-pixel units that need to be turned off in each sub-display area; Sub-pixel units of corresponding colors and quantity ratios in the sub-display area are turned off according to the first database.

36. The display panel according to claim 35, wherein: The first database is obtained through the color accuracy of each sub-display area in the display panel.

37. The display panel according to any one of claims 25 to 36, wherein: The sub-pixel unit that is turned off is a low grayscale sub-pixel unit.

38. The display panel according to any one of claims 25 to 36, wherein: Turning off at least part of the sub-pixel units in the sub-display area according to the initial image data comprises: A portion of the repeating units in the sub-display area is turned off according to the initial image data, wherein the repeating units include sub-pixel units of different colors.

39. The display panel according to claim 38, wherein: The driver chip is also used for: Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area; The number of sub-pixel units in the repeating unit is determined according to the reference grayscale value, wherein the reference grayscale value and the number of sub-pixel units in the repeating unit are positively correlated.

40. The display panel according to any one of claims 25 to 36, wherein: Turning off at least a portion of non-zero grayscale sub-pixel units in a portion of the sub-display area according to the initial image data comprises: Obtaining the current display brightness value of the display panel; Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area; controlling an off ratio of sub-pixel units in the sub-display area according to the current display brightness value and the reference grayscale value, wherein the off ratio is a ratio of the number of off sub-pixel units in the sub-display area to the total number of sub-pixel units in the sub-display area; The current display brightness value is negatively correlated with the shutdown ratio, and the reference grayscale value is negatively correlated with the shutdown ratio.

41. The display panel according to claim 39 or 40, wherein: Obtaining a reference grayscale value corresponding to the sub-display area according to the obtained grayscales of at least part of the sub-pixel units in the sub-display area, comprising: According to the obtained grayscales of at least part of the sub-pixel units in the sub-display area, an average value of a plurality of the grayscales is obtained as the reference grayscale value; Alternatively, based on the obtained grayscales of at least part of the sub-pixel units in the sub-display area, a median value of a plurality of the grayscales is obtained as the reference grayscale value.

42. The display panel according to any one of claims 25 to 36, wherein: The driver chip is also used for: Get the current display brightness value of the display panel; Obtaining a grayscale threshold using the current display brightness value according to a second database pre-stored in the display panel, wherein the second database includes a mapping relationship between the current display brightness value and the grayscale threshold; Acquire grayscales of at least some of the sub-pixel units in the sub-display area according to the sub-image data, and acquire a reference grayscale value corresponding to the sub-display area according to the acquired grayscales of at least some of the sub-pixel units in the sub-display area; The grayscale threshold and a reference grayscale value are compared, and the uniformity adjustment method is started when the reference grayscale value is less than or equal to the grayscale threshold.

43. The display panel according to claim 25, wherein: The display panel is driven by pure picture data of the first color, so that at least part of the sub-pixel units display the first color and the second color; Turning off at least a portion of non-zero grayscale sub-pixel units in at least a portion of the sub-display area according to the initial image data comprises: When the initial image data includes data for driving the first color sub-pixel unit and the second color sub-pixel unit, at least part of the second color sub-pixel unit is turned off.

44. A display device, wherein: The display device comprises the display panel according to any one of claims 23 to 43.