CN114267294B

CN114267294B - Display panel driving method and display device

Info

Publication number: CN114267294B
Application number: CN202210009495.9A
Authority: CN
Inventors: 何鑫; 陈金水; 刘祥恒; 赵文勤
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Display Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Display Technology Co Ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2023-04-25
Anticipated expiration: 2042-01-06
Also published as: CN114267294A

Abstract

The embodiment of the disclosure provides a driving method of a display panel and a display device, wherein when determining that a display picture of the display panel has a repeated bad phenomenon, the minimum repeated display unit in a bad area is determined. The minimum repeated display unit is divided into a plurality of repeated display subunits. And determining target data voltages corresponding to the gray scale values of each sub-pixel in each repeated display sub-unit according to the data voltage lookup table corresponding to each repeated display sub-unit in the same minimum repeated display unit. Thus, the display panel can be driven according to the target data voltage, so that each sub-pixel is charged with the corresponding target data voltage. Therefore, the target data voltage of each sub-pixel in the corresponding repeated display sub-unit can be determined by adopting different data voltage lookup tables, and the uniformity and the image quality of the display effect are improved.

Description

Display panel driving method and display device

Technical Field

The disclosure relates to the technical field of display, and in particular relates to a driving method of a display panel and a display device.

Background

In such as a liquid crystal display panel (Liquid Crystal Display, LCD) and an Organic Light-Emitting Diode (OLED) display panel, a plurality of pixel units are generally included. Each pixel unit may include: red, green, and blue sub-pixels. The color picture is displayed by mixing the colors to be displayed by controlling the brightness corresponding to each sub-pixel.

Disclosure of Invention

The embodiment of the disclosure provides a driving method of a display panel and a display device, which can improve uniformity of display effect and image quality.

The driving method of the display panel provided by the embodiment of the disclosure comprises the following steps:

when determining that the display screen of the display panel has a poor phenomenon of repeatability, determining a minimum repeated display unit in a region where the poor phenomenon exists;

dividing the minimal repeating display unit into a plurality of repeating display subunits; wherein, in the same minimum repeated display unit, adverse phenomena in each repeated display subunit are different;

for each repeated display subunit in the same minimum repeated display unit, determining a target data voltage corresponding to a gray scale value of each sub-pixel in each repeated display subunit according to a data voltage lookup table corresponding to each repeated display subunit one by one stored in advance; the data voltage lookup table comprises data voltages corresponding to all gray scale values; in the same minimum repeated display unit, in the data voltage lookup tables corresponding to the repeated display subunits, the data voltages corresponding to the same gray scale value are different;

And driving the display panel according to the target data voltage so that each sub-pixel is charged with the corresponding target data voltage.

In some examples, the minimal repeating display unit includes a light area and a dark area; wherein the bright area is divided into a first repeated display subunit and the dark area is divided into a second repeated display subunit;

the first repeated display subunit corresponds to a first data voltage lookup table;

the second repeated display subunit corresponds to a second data voltage lookup table;

for the same gray scale value, the positive polarity data voltage in the second data voltage lookup table is greater than the positive polarity data voltage in the first data voltage lookup table, and the negative polarity data voltage in the second data voltage lookup table is less than the negative polarity data voltage in the first data voltage lookup table.

In some examples, the area where the defect exists includes: a bright subpixel row group and a dark subpixel row group alternately arranged; wherein the bright subpixel row group comprises at least one subpixel row and the dark subpixel row group comprises at least one subpixel row;

the bright region includes the bright subpixel row group and the dark region includes the dark subpixel row group.

In some examples, the area where the defect exists includes: a bright subpixel column group and a dark subpixel column group alternately arranged; wherein the bright subpixel column group comprises at least one subpixel column and the dark subpixel column group comprises at least one subpixel column;

the bright region includes the bright subpixel column group and the dark region includes the dark subpixel column group.

In some examples, the area where the defect exists includes: a bright subpixel group and a dark subpixel group in a checkerboard arrangement; wherein the bright subpixel group comprises at least one subpixel and the dark subpixel row group comprises at least one subpixel;

the bright region includes the bright subpixel group and the dark region includes the dark subpixel group.

In some examples, the display panel includes a plurality of differently colored subpixels;

the data voltage lookup table comprises data voltages corresponding to different gray scale values of various color sub-pixels.

In some examples, a method of determining a data voltage look-up table for each of the repeating display subunits one-to-one, comprising:

driving the display panel to display a debugging picture by adopting a set data voltage lookup table;

When determining that the display panel displays the defect phenomenon that the debugging picture has repeatability, determining that a minimum debugging repeated display unit exists in a defective area;

dividing the minimum debug repeated display unit into a plurality of debug display subunits; in the same minimum debugging repeated display unit, adverse phenomena in each debugging display subunit are different;

determining a debug display subunit corresponding to the set data voltage lookup table for each debug display subunit in the same minimum debug repeated display unit, and debugging the brightness of each sub-pixel in the rest of debug display subunits to determine the data voltage lookup table corresponding to each of the rest of debug display subunits;

and determining the set data voltage lookup table and the data voltage lookup table corresponding to each of the other debugging display subunits as the pre-stored data voltage lookup table corresponding to each repeated display subunit one by one.

the debugging picture comprises a solid-color picture;

or the debugging picture comprises pictures with the same gray scale value of all the sub-pixels of various colors.

The display device provided by the embodiment of the disclosure comprises:

a display panel including a source driving circuit;

a timing controller configured to:

for each repeated display subunit in the same minimum repeated display unit, determining a target data voltage corresponding to the gray scale value of each subpixel in each repeated display subunit according to a data voltage lookup table corresponding to each repeated display subunit one by one stored in advance, and outputting the target data voltage to the source driving circuit; the data voltage lookup table comprises data voltages corresponding to all gray scale values; in the same minimum repeated display unit, in the data voltage lookup tables corresponding to the repeated display subunits, the data voltages corresponding to the same gray scale value are different;

the source driving circuit is configured to drive the display panel according to the target data voltage so that each of the sub-pixels is charged with the corresponding target data voltage.

In some examples, the timing controller stores a data voltage lookup table that corresponds one-to-one to each of the repeating display subunits.

The beneficial effects of the embodiment of the disclosure are as follows:

the embodiment of the disclosure provides a driving method of a display panel and a display device, wherein when determining that a display picture of the display panel has a repeated bad phenomenon, the minimum repeated display unit in a bad area is determined. Then, the minimum repeated display unit is divided into a plurality of repeated display subunits. Therefore, target data voltages corresponding to the gray scale value of each sub-pixel in each repeated display sub-unit can be determined according to the data voltage lookup table corresponding to each repeated display sub-unit in the same minimum repeated display unit. Thus, the display panel can be driven according to the target data voltage, so that each sub-pixel is charged with the corresponding target data voltage. The target data voltage for each sub-pixel in the repeating display sub-unit may thus be determined by using a different data voltage look-up table. Because the data voltages corresponding to the same gray scale value in the data voltage lookup tables corresponding to the repeated display subunits in the same minimum repeated display unit are different, the uniformity and the image quality of the display effect can be improved when the display panel drives the display picture by adopting the determined target data voltage.

Drawings

FIG. 1 is a schematic diagram of some structures of a display panel according to an embodiment of the disclosure;

FIG. 2 is a schematic view of other structures of a display panel according to an embodiment of the disclosure;

FIG. 3 is a schematic view of still other structures of a display panel according to an embodiment of the disclosure;

FIG. 4 is a timing diagram of some signals in an embodiment of the present disclosure;

FIG. 5 is a flow chart of some methods in embodiments of the present disclosure;

FIG. 6 is a schematic view of still other structures of a display panel according to an embodiment of the present disclosure;

FIG. 7 is a flowchart of other methods in embodiments of the present disclosure;

FIG. 8 is a schematic view of still other structures of a display panel according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of still other structures of a display panel according to an embodiment of the present disclosure;

fig. 10 is a schematic view of still another structure of a display panel according to an embodiment of the present disclosure.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. And embodiments of the disclosure and features of embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

It should be noted that the dimensions and shapes of the various figures in the drawings do not reflect true proportions, and are intended to illustrate the present disclosure only. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

Referring to fig. 1 and 2, the display device may include a display panel 100 and a timing controller 200. The display panel 100 may include a plurality of pixel units arranged in an array, a plurality of gate lines GA (e.g., GA1, GA2, GA3, GA 4), a plurality of data lines DA (e.g., DA1, DA2, DA 3), a gate driving circuit 110, and a source driving circuit 120. The gate driving circuit 110 is coupled to the gate lines GA1, GA2, GA3, GA4, respectively, and the source driving circuit 120 is coupled to the data lines DA1, DA2, DA3, respectively. The timing controller 200 may input a control signal to the gate driving circuit 110 through a Level Shift (Level Shift) circuit, thereby driving the gate lines GA1, GA2, GA3, and GA4. The timing controller 200 inputs a signal to the source driving circuit 120 to cause the source driving circuit 120 to input a data voltage to the data line, thereby charging the sub-pixel SPX and causing the sub-pixel SPX to input a corresponding data voltage, thereby realizing a picture display function. For example, the source driving circuits 120 may be provided in 2, wherein one source driving circuit 120 is connected to half of the number of data lines, and the other source driving circuit 120 is connected to the other half of the number of data lines. Of course, 3, 4, or more source driving circuits 120 may be provided, which may be determined by design according to the requirements of practical applications, and is not limited herein.

In an embodiment of the present disclosure, a timing controller is configured to: when determining that the display screen of the display panel has a repeated bad phenomenon, determining a minimum repeated display unit in a bad area; dividing the minimum repeated display unit into a plurality of repeated display subunits; determining target data voltages of gray scale values corresponding to each sub-pixel in each repeated display sub-unit according to a data voltage lookup table corresponding to each repeated display sub-unit stored in advance for each repeated display sub-unit in the same minimum repeated display unit, and outputting the target data voltages to a source electrode driving circuit; in the same minimum repeated display unit, adverse phenomena in each repeated display subunit are different; the data voltage lookup table comprises data voltages corresponding to the gray scale values; and in the same minimum repeated display unit, the data voltages corresponding to the same gray scale value in the data voltage lookup tables corresponding to the repeated display subunits are different.

The source driving circuit is configured to drive the display panel according to the target data voltage so that each sub-pixel is charged with the corresponding target data voltage.

Illustratively, each pixel cell includes a plurality of sub-pixels SPX. For example, the pixel unit may include red, green, and blue sub-pixels, so that color mixing can be performed by red, green, and blue to realize color display. Alternatively, the pixel unit may include red, green, blue and white sub-pixels, so that color mixing can be performed by red, green, blue and white to realize color display. Of course, in practical application, the emission color of the sub-pixels in the pixel unit may be designed and determined according to the practical application environment, which is not limited herein.

As shown in fig. 2, a transistor 01 and a pixel electrode 02 are included in each sub-pixel SPX. One row of sub-pixels SPX corresponds to one gate line, and one column of sub-pixels SPX corresponds to one data line. The gate electrode of the transistor 01 is electrically connected with the corresponding gate line, the source electrode of the transistor 01 is electrically connected with the corresponding data line, and the drain electrode of the transistor 01 is electrically connected with the pixel electrode 02, which should be noted that the pixel array structure of the present disclosure may also be a dual-gate structure, that is, two gate lines are disposed between two adjacent rows of pixels, and the arrangement mode can reduce half of the data lines, that is, the data lines between two adjacent columns of pixels are included, the data lines are not included between two adjacent columns of pixels, the specific pixel arrangement structure and the data lines are not limited, and the arrangement mode of the scanning lines is not limited.

It should be noted that the display panel in the embodiments of the present disclosure may be a liquid crystal display panel, an OLED display panel, or the like, which is not limited herein.

At present, different display application scenes are required to display different effects. For example, in the case of a still picture, it is demanded to reduce power consumption without pursuing a higher refresh frequency. In the game mode, the display is smoother, and a higher refresh frequency is pursued. However, the display mode of the display panel is generally fixed and single, which results in poor user experience.

The following description will take a pixel unit including red, green and blue sub-pixels as an example. As shown in fig. 3, the red sub-pixel R11, the green sub-pixel G11, and the blue sub-pixel B11 are one pixel unit, and the red sub-pixel R12, the green sub-pixel G12, and the blue sub-pixel B12 are one pixel unit. The red sub-pixel R21, the green sub-pixel G21, and the blue sub-pixel B21 are one pixel unit, and the red sub-pixel R22, the green sub-pixel G22, and the blue sub-pixel B22 are one pixel unit. The red sub-pixel R31, the green sub-pixel G31, and the blue sub-pixel B31 are one pixel unit, and the red sub-pixel R32, the green sub-pixel G32, and the blue sub-pixel B32 are one pixel unit. The red sub-pixel R41, the green sub-pixel G41, and the blue sub-pixel B41 are one pixel unit, and the red sub-pixel R42, the green sub-pixel G42, and the blue sub-pixel B42 are one pixel unit. The red sub-pixel R51, the green sub-pixel G51, and the blue sub-pixel B51 are one pixel unit, and the red sub-pixel R52, the green sub-pixel G52, and the blue sub-pixel B52 are one pixel unit. The red sub-pixel R61, the green sub-pixel G61, and the blue sub-pixel B61 are one pixel unit, and the red sub-pixel R62, the green sub-pixel G62, and the blue sub-pixel B62 are one pixel unit.

For example, as shown in connection with fig. 3 and 4, a process when driving the display panel to display a picture can be described as follows. GA1 represents the signal loaded on the gate line GA1, GA2 represents the signal loaded on the gate line GA2, GA3 represents the signal loaded on the gate line GA3, GA4 represents the signal loaded on the gate line GA4, GA5 represents the signal loaded on the gate line GA5, and GA6 represents the signal loaded on the gate line GA 6. Vda1 represents the data voltage applied to the data line DA 1. Also, the high level in the signals ga1 to ga6 may be used as a gate-on signal to control the transistor in the sub-pixel to be turned on. When the control display panel is driven in the first display mode, gate-on signals can be sequentially loaded on the gate lines GA1 to GA 6. Taking a red subpixel connected to the display frame F01, the data line DA1, and the data line DA1 as an example, when the signal GA1 on the gate line GA1 outputs a high-level gate-on signal, the transistor in the red subpixel R11 is turned on. And, in the period T11 corresponding to the high level of the signal ga1, the data line DA1 connected to the red subpixel R11 is loaded with the data voltage Vr11 corresponding to the gray scale value, so that the red subpixel R11 inputs the data voltage Vr11. And, in the T11 period, the signal GA2 on the gate line GA2 outputs a gate-on signal of a high level, and the transistor in the red subpixel R21 is turned on. The data voltage Vr11 is simultaneously input into the red subpixel R21 to precharge the red subpixel R21.

And, in a period T12 corresponding to the high level of the signal ga2, the data line DA1 connected to the red subpixel R21 is charged with the data voltage Vr21 corresponding to the gray scale value, so that the red subpixel R21 is charged with the data voltage Vr21. And, in the T12 period, the signal GA3 on the gate line GA3 outputs a gate-on signal of a high level, and the transistor in the red subpixel R31 is turned on. The data voltage Vr21 is simultaneously input into the red subpixel R31 to precharge the red subpixel R31.

And, in a period T13 corresponding to the high level of the signal ga3, the data line DA1 connected to the red subpixel R31 is charged with the data voltage Vr31 corresponding to the gray scale value, so that the red subpixel R31 is charged with the data voltage Vr31. And, in the T13 period, the signal GA4 on the gate line GA4 outputs a gate-on signal of a high level, and the transistor in the red subpixel R41 is turned on. The data voltage Vr31 is simultaneously input into the red subpixel R41 to precharge the red subpixel R41.

And, in a period T14 corresponding to the high level of the signal ga4, the data line DA1 connected to the red subpixel R41 is charged with the data voltage Vr41 corresponding to the gray scale value, so that the red subpixel R41 is charged with the data voltage Vr41. And, in the T14 period, the signal GA5 on the gate line GA5 outputs a gate-on signal of a high level, and the transistor in the red subpixel R51 is turned on. The data voltage Vr41 is simultaneously input into the red subpixel R51 to precharge the red subpixel R51.

And, in a period T15 corresponding to the high level of the signal ga5, the data line DA1 connected to the red subpixel R51 is charged with the data voltage Vr51 corresponding to the gray scale value, so that the red subpixel R51 is charged with the data voltage Vr51. And, in the T15 period, the signal GA6 on the gate line GA6 outputs a gate-on signal of a high level, and the transistor in the red subpixel R61 is turned on. The data voltage Vr51 is simultaneously input into the red subpixel R51 to precharge the red subpixel R51.

And, in the period T16 corresponding to the high level of the signal ga6, the data line DA1 connected to the red subpixel R61 is charged with the data voltage Vr61 corresponding to the gray scale value, so that the red subpixel R61 is charged with the data voltage Vr61. And precharges the next red subpixel.

The embodiments of the remaining sub-pixels are analogized in order until the sub-pixels in the entire display panel are completely charged with the data voltages, which is not described herein.

It should be noted that the working process of the display panel in each display frame may be substantially the same as the working process of the display frame F01 described above, which is not described herein.

However, in practical applications, due to the coupling of parasitic capacitance between the data line and the pixel electrode, the sub-pixels may have different charging rates, which may cause a display failure phenomenon of the display panel. In order to improve the display effect, the embodiment of the present disclosure provides a driving method of a display panel, by determining a minimum repeated display unit in a region where a defect exists when determining that the display screen of the display panel has a defective phenomenon of repeatability. Then, the minimum repeated display unit is divided into a plurality of repeated display subunits. Therefore, target data voltages corresponding to the gray scale value of each sub-pixel in each repeated display sub-unit can be determined according to the data voltage lookup table corresponding to each repeated display sub-unit in the same minimum repeated display unit. Thus, the display panel can be driven according to the target data voltage, so that each sub-pixel is charged with the corresponding target data voltage. The target data voltage for each sub-pixel in the repeating display sub-unit may thus be determined by using a different data voltage look-up table. Because the data voltages corresponding to the same gray scale value in the data voltage lookup tables corresponding to the repeated display subunits in the same minimum repeated display unit are different, the uniformity and the image quality of the display effect can be improved when the display panel drives the display picture by adopting the determined target data voltage.

As shown in fig. 5, the driving method of the display panel provided in the embodiment of the present disclosure may include the following steps:

s110, when determining that the display screen of the display panel has the defect phenomenon of repeatability, determining the minimum repeated display unit in the region with the defect.

S120, dividing the minimum repeated display unit into a plurality of repeated display subunits.

S130, determining target data voltages corresponding to gray scale values of all sub-pixels in all the repeated display sub-units according to a data voltage lookup table corresponding to all the repeated display sub-units one by one stored in advance for all the repeated display sub-units in the same minimum repeated display unit.

And S140, driving the display panel according to the target data voltage so that each sub-pixel is charged with the corresponding target data voltage.

In practical applications, when the display panel displays a picture, uneven brightness, such as brighter regions and darker regions, may occur. Sometimes these lighter and darker areas will be in a periodic repeating arrangement. For example, as shown in fig. 6, the first row of sub-pixels R11 to B14 are displayed lighter, and the second row of sub-pixels R21 to B24 to the sixth row of sub-pixels R61 to B64 are displayed darker. The seventh row of sub-pixels R71 to B74 are again shown to be brighter, and the eighth row of sub-pixels R81 to B84 to the twelfth row of sub-pixels R121 to B124 are shown to be darker. The seventh row of sub-pixels R71 to B74 are again displayed brighter, and the eighth row of sub-pixels R81 to B84 to the twelfth row of sub-pixels R121 to B124 are displayed darker, which is equivalent to the first row of sub-pixels R11 to B14 being displayed brighter, and the second row of sub-pixels R21 to B24 to the sixth row of sub-pixels R61 to B64 being displayed darker, and the arrangement is repeated. This allows adjacent six rows of subpixels to be the smallest repeating display unit. For example, the first to sixth rows of sub-pixels R11 to B14 to R61 to B64 serve as one minimum repeated display unit. The seventh to twelfth rows of sub-pixels R71 to B74 to R121 to B124 serve as another minimum repeated display unit. Accordingly, the adverse phenomenon occurring in the same minimum repeated display unit may be different. Further, by copying the minimum repeated display unit, a defective area existing in the screen displayed on the display panel can be present.

In the embodiment of the present disclosure, in the same minimum repeated display unit, the adverse phenomenon in each repeated display subunit is different. And, among the different minimum repeated display units, there are repeated display subunits in which the same adverse phenomenon occurs. For example, as shown in fig. 6, in the first to sixth rows of sub-pixels R11 to B14 to R61 to B64 as one minimum repeated display unit, the first row of sub-pixels R11 to B14 may be divided into one repeated display sub-unit S11, and the second to sixth rows of sub-pixels R21 to B24 to R61 to B64 may be divided into another repeated display sub-unit S12. In the seventh to twelfth rows of sub-pixels R71 to B74 to R121 to B124 as the minimum repeated display unit, the seventh row of sub-pixels R71 to B74 may be divided into one repeated display sub-unit S21, and the eighth to twelfth rows of sub-pixels R81 to B84 to R121 to B124 may be divided into another repeated display sub-unit S22.

In an embodiment of the disclosure, the data voltage lookup table includes data voltages corresponding to each gray scale value; and in the same minimum repeated display unit, the data voltages corresponding to the same gray scale value in the data voltage lookup tables corresponding to the repeated display subunits are different. In the same minimum repeated display unit, each repeated display subunit is in one-to-one correspondence with a data voltage lookup table. And in different minimum repeated display units, the data voltage lookup tables corresponding to the repeated display subunits with the same adverse phenomena are the same. For example, as shown in fig. 6, the repeated display subunits S11 and S21 correspond to the same data voltage lookup table LUT1, and the repeated display subunits S12 and S22 correspond to the same data voltage lookup table LUT2. And the time schedule controller stores a data voltage lookup table corresponding to each repeated display subunit one by one.

When the data voltage Vda1 input to the pixel electrode of the sub-pixel SPX is greater than the common electrode voltage Vcom, the liquid crystal molecules at the sub-pixel SPX may be made positive, and the polarity corresponding to the data voltage Vda1 in the sub-pixel SPX is made positive. When the data voltage Vda2 input to the pixel electrode of the sub-pixel SPX is smaller than the common electrode voltage Vcom, the liquid crystal molecules at the sub-pixel SPX may be made negative, and the polarity corresponding to the data voltage Vda2 in the sub-pixel SPX may be made negative. For example, the common electrode voltage may be 8.3V, and if a data voltage of 8.3V to 16V is inputted to the pixel electrode of the sub-pixel SPX, the liquid crystal molecules at the sub-pixel SPX may be positive, and the data voltage of 8.3V to 16V is a data voltage corresponding to positive. When a data voltage of 0.6V to 8.3V is input to the pixel electrode of the subpixel SPX, the liquid crystal molecules at the subpixel SPX can be made negative, and the data voltage of 0.6V to 8.3V corresponds to the data voltage of the negative polarity. For example, taking an 8bit 0-255 gray scale as an example, if a 16V data voltage is input into a pixel electrode of a sub-pixel SPX, the sub-pixel SPX may correspond to a brightness of a positive polarity maximum gray scale value. When a data voltage of 0.6V is input to the pixel electrode of the sub-pixel SPX, the sub-pixel SPX can correspond to the brightness of the maximum gray scale value of the negative polarity.

In an embodiment of the disclosure, the data voltage lookup table includes data voltages corresponding to different gray scale values for each color sub-pixel. The data voltage lookup table includes positive polarity data voltages and negative polarity data voltages of the respective color sub-pixels corresponding to different gray scale values. For example, taking gray scale values of 0 to 255 as an example, the data voltage lookup table LUT1 is shown in table one, and may include: the red sub-pixel R corresponds to the positive polarity data voltage Rz11 of each of the 0 to 255 gray scale values: vrz1_0, vrz1_1, vrz1 _1_ … … Vrz1 _1_254, vrz1 _1_255, the red subpixel R corresponds to the negative data voltage Rf11 of each of the 0 to 255 gray levels: vrf1_0, vrf1_1, vrf1_2 … … vrf1_254, vrf1_255, and the green subpixel G corresponds to the positive-polarity data voltage Gz11 of each of the 0 to 255 gray-scale values: vgz1_0, vgz1_1, vgz1 _1_ … … Vgz1 _1_254, vgz1 _1_255, the green subpixel G corresponds to the negative data voltage Gf11 of each of the 0 to 255 gray scale values: vgf1_0, vgf1_1, vgf1_2 … … vgf1_254, vgf1_255, and blue subpixel B corresponds to positive-polarity data voltage Bz11 for each of 0 to 255 gray scale values: vbz1_0, vbz1_1, vbz1 _1_ … … Vbz1 _1_254, vbz1 _1_255, and the blue subpixel B corresponds to a negative data voltage Bf11 of each of the 0 to 255 gray scale values: vbf1_0, vbf1_1, vbf1_2 … … vbf1_254, vbf1_255.

Gray scale value

Rz11

Gz11

Bz11

Rf11

Gf11

Bf11

0

Vrz1_0

Vgz1_0

Vbz1_0

Vrf1_0

Vgf1_0

Vbf1_0

1

Vrz1_1

Vgz1_1

Vbz1_1

Vrf1_1

Vgf1_1

Vbf1_1

2

Vrz1_2

Vgz1_2

Vbz1_2

Vrf1_2

Vgf1_2

Vbf1_2

……

254

Vrz1_254

Vgz1_254

Vbz1_254

Vrf1_254

Vgf1_254

Vbf1_254

255

Vrz1_255

Vgz1_255

Vbz1_255

Vrf1_255

Vgf1_255

Vbf1_255

List one

For example, taking a gray scale value of 0 to 255 as an example, the data voltage lookup table LUT2 is shown in table two, and may include: the red sub-pixel R corresponds to the positive polarity data voltage Rz21 of each of the 0 to 255 gray scale values: vrz1_0, vrz2 _2_1, vrz2 _2_ … … Vrz2 _2_254, vrz2 _2_255, the red subpixel R corresponds to the negative data voltage Rf21 of each of the 0 to 255 gray levels: vrf2_0, vrf2_1, vrf2_ … … vrf2_254, vrf2_255, and the green subpixel G corresponds to the positive-polarity data voltage Gz21 of each of 0 to 255 gray scale values: vgz2_0, vgz2_1, vgz2 _2_ … … Vgz2 _2_254, vgz2 _2_255, the green subpixel G corresponds to the negative data voltage Gf21 of each of the 0 to 255 gray levels: vgf2_0, vgf2_1, vgf2_ … … vgf2_254, vgf2_255, and blue subpixel B corresponds to positive-polarity data voltage Bz21 for each of 0 to 255 gray scale values: vbz2_0, vbz2 _2_1, vbz2 _2_ … … Vbz2 _2_254, vbz2 _2_255, and the blue subpixel B corresponds to the negative data voltage Bf21 of each of the 0 to 255 gray scale values: vbf2_0, vbf2_1, vbf2_2 … … vbf2_254, vbf2_255.

Gray scale value

Rz21

Gz21

Bz21

Rf21

Gf21

Bf21

0

Vrz2_0

Vgz2_0

Vbz2_0

Vrf2_0

Vgf2_0

Vbf2_0

1

Vrz2_1

Vgz2_1

Vbz2_1

Vrf2_1

Vgf2_1

Vbf2_1

2

Vrz2_2

Vgz2_2

Vbz2_2

Vrf2_2

Vgf2_2

Vbf2_2

……

254

Vrz2_254

Vgz2_254

Vbz2_254

Vrf2_254

Vgf2_254

Vbf2_254

255

Vrz2_255

Vgz2_255

Vbz2_255

Vrf2_255

Vgf2_255

Vbf2_255

Watch II

In an embodiment of the present disclosure, the minimum repeated display unit includes a bright area and a dark area; wherein the bright area is divided into a first repeated display subunit and the dark area is divided into a second repeated display subunit. For example, as shown in fig. 6, among the smallest repeating display units of the first to sixth rows of the sub-pixels R11 to B14 to R61 to B64, the repeating display sub-unit S11 is a first repeating display sub-unit, the repeating display sub-unit S12 is a second repeating display sub-unit, and among the smallest repeating display units of the seventh to twelfth rows of the sub-pixels R71 to B74 to R121 to B124, the repeating display sub-unit S21 is a first repeating display sub-unit, and the repeating display sub-unit S22 is a second repeating display sub-unit.

In an embodiment of the present disclosure, the data voltage lookup table LUT1 may be a first data voltage lookup table corresponding to a first repeated display subunit. The data voltage lookup table LUT2 may be a second data voltage lookup table corresponding to a second repeating display subunit. And, for the same gray scale value, the positive polarity data voltage in the second data voltage lookup table LUT2 corresponding to the same color sub-pixel is greater than the positive polarity data voltage in the first data voltage lookup table LUT 1. For example, vrz2_0> vrz1_0, vrz2_1> vrz1_1, vrz2_2> vrz1_2, … … Vrz2 _2_254 > vrz1_254, vrz2_255> vrz1_255.Vgz2_0> vgz1_0, vgz2_1> vgz1_1, vgz2_2> vgz1_2, … … Vgz2 _2_254 > vgz1_254, vgz2_255> vgz1_255.Vbz2_0> Vbz1_0, vbz2_1> Vbz1_1, vbz2_2> Vbz1_2, … … Vbz2 _2_254 > Vbz1_254, and Vbz2_255> Vbz1_255.

In the embodiment of the disclosure, for the same gray scale value, the data voltage of the negative polarity in the second data voltage lookup table LUT2 corresponding to the same color sub-pixel is smaller than the data voltage of the negative polarity in the first data voltage lookup table LUT 1. For example, vrf2_0< vrf1_0, vrf2_1< vrf1_1, vrf2_2< vrf1_2, … … vrf2_254< vrf1_254, vrf2_255< vrf1_255.Vgf2_0< vgf1_0, vgf2_1< vgf1_1, vgf2_2< vgf1_2, … … vgf2_254< vgf1_254, vgf2_255< vgf1_255.Vbf2_0< vbf1_0, vbf2_1< vbf1_1, vbf2_2< vbf1_2, … … vbf2_254< vbf1_254, vbf2_255< vbf1_255.

In an embodiment of the disclosure, as shown in fig. 7, a method for determining a data voltage lookup table corresponding to each repeated display subunit one by one may include the following steps:

s01, driving the display panel to display the debugging picture by adopting the set data voltage lookup table.

Illustratively, the debug frame comprises a solid color frame. For example, the debug frame may include a red solid frame, a green solid frame, a blue solid frame. For example, when the display panel has a gray scale value of 0 to 255, for example, when the display panel displays a red solid-color screen, each red subpixel in the display panel receives a data voltage corresponding to display data of the same gray scale value (for example, 127 gray scale values, 255 gray scale values, etc.), and each green subpixel and each blue subpixel receives a data voltage corresponding to display data of 0 gray scale value. When the display panel displays a green solid-color screen, each green sub-pixel in the display panel inputs a data voltage of display data corresponding to the same gray scale value (for example, 127 gray scale values, 255 gray scale values, etc.), and each red sub-pixel and each blue sub-pixel inputs a data voltage of display data corresponding to 0 gray scale value. When the display panel displays a blue solid-color screen, each blue sub-pixel in the display panel inputs a data voltage of display data corresponding to the same gray scale value (for example, 127 gray scale values, 255 gray scale values, etc.), and each green sub-pixel and each red sub-pixel inputs a data voltage of display data corresponding to 0 gray scale value.

In the embodiment of the disclosure, the debug frame includes frames in which sub-pixels of various colors are all the same gray scale value. For example, taking a display panel having a gray scale value of 0 to 255 as an example, each of the sub-pixels of each color is a screen having a gray scale value of 127. Alternatively, each of the sub-pixels of each color is a 100 gray scale frame. Or, each sub-pixel of each color is a 255 gray scale picture. Alternatively, each of the sub-pixels of each color is a 200 gray-scale frame.

The initial Gamma curve and the color coordinates of the display panel when the display panel displays the debugging picture are tested by the optical test instrument, and the target Gamma curve and the color coordinates are corrected by the set data voltage lookup table.

Illustratively, the set data voltage lookup table may be the data voltage lookup table LUT1.

S02, when the defect that the display panel displays the debugging picture with repeatability is determined, determining the minimum debugging repeated display unit in the region with the defect.

The manner of determining the minimum debug repeated display unit is substantially the same as the manner of determining the minimum repeated display unit described above, and will not be described in detail herein.

S03, dividing the minimum debugging repeated display unit into a plurality of debugging display subunits; in the same minimum debugging repeated display unit, adverse phenomena in each debugging display subunit are different.

The manner of determining the debug display subunit is substantially the same as the manner of determining the duplicate display subunit described above, and will not be described herein.

S04, aiming at each debugging display subunit in the same minimum debugging repeated display unit, determining the corresponding debugging display subunit of the set data voltage lookup table, and debugging the brightness of each sub-pixel in the rest of the debugging display subunits to determine the corresponding data voltage lookup table in each of the rest of the debugging display subunits.

For example, the minimum debug repeated display unit also includes a bright region and a dark region, the bright region is set as a debug display subunit of the data voltage look-up table (i.e. LUT 1) which is set correspondingly, and the dark region is set as the rest of the debug display subunits. This allows for the brightness of each sub-pixel in the dark region to be adapted to determine the data voltage look-up table (i.e., LUT 2) for the dark region.

S05, determining the set data voltage lookup table and the data voltage lookup table corresponding to each of the other debugging display subunits as the data voltage lookup table corresponding to each repeated display subunit stored in advance one by one. Illustratively, the set data voltage look-up table (i.e., LUT 1) is determined as the data voltage look-up table corresponding to the debug display subunit for the bright region. And determining the debugged data voltage lookup table (namely LUT 2) as a data voltage lookup table corresponding to the debugged display subunit in the dark area.

In practical application, when a large-size (e.g., UHD) display panel is displayed, in a reverse manner of 6 rows+1 times, in a first row of each reverse polarity, due to signal delay, a square wave needs to reach a specified voltage for a long time when in transition, and regular transverse stripes with 6 rows and more columns as the minimum period are likely to be generated when a static picture is displayed, and the brightness rules of the transverse stripes are the first row and the second to sixth rows are bright, so that the picture displayed by the display panel may have the adverse phenomenon of transverse brightness stripes. Such that the area where the defect exists may include: a bright subpixel row group and a dark subpixel row group alternately arranged; wherein the bright subpixel row group comprises at least one subpixel row and the dark subpixel row group comprises at least one subpixel row. And, the bright area includes a bright subpixel row group, and the dark area includes a dark subpixel row group. For example, as shown in connection with fig. 6, the first row of sub-pixels R11 to B14 are displayed lighter, and the second row of sub-pixels R21 to B24 to the sixth row of sub-pixels R61 to B64 are displayed darker. The seventh row of sub-pixels R71 to B74 are again shown to be brighter, and the eighth row of sub-pixels R81 to B84 to the twelfth row of sub-pixels R121 to B124 are shown to be darker. The first row of sub-pixels R11 to B14 may be a bright sub-pixel row group, the second row of sub-pixels R21 to B24 to the sixth row of sub-pixels R61 to B64 may be a dark sub-pixel row group, the seventh row of sub-pixels R71 to B74 may be a bright sub-pixel row group, and the eighth row of sub-pixels R81 to B84 to the twelfth row of sub-pixels R121 to B124 may be a dark sub-pixel row group.

The present disclosure is described in detail below with reference to fig. 6. It should be noted that, in this embodiment, the disclosure is better explained, but the disclosure is not limited thereto.

The driving method of the display panel provided by the embodiment of the disclosure may include the following steps:

(1) When the defect phenomenon of transverse bright and dark stripes with repeatability of the display picture of the display panel is determined, the minimum repeated display unit in the defective area is determined: the sub-pixels in adjacent six rows serve as the minimum repeating display unit.

(2) Among the smallest repeating display units including the first to sixth rows of the sub-pixels R11 to B14 to R61 to B64, the repeating display sub-unit S11 is a first repeating display sub-unit, the repeating display sub-unit S12 is a second repeating display sub-unit, and among the smallest repeating display units including the seventh to twelfth rows of the sub-pixels R71 to B74 to R121 to B124, the repeating display sub-unit S21 is a first repeating display sub-unit, and the repeating display sub-unit S22 is a second repeating display sub-unit.

(3) The gray scale value of each sub-pixel can be determined from the original display data, so that for the red sub-pixel, the green sub-pixel and the blue sub-pixel in the repeated display sub-unit S11, the corresponding target data voltage can be found from the data voltage lookup table LUT1 according to the gray scale values in the original display data corresponding to the sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz1_2 from the data voltage lookup table LUT 1. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf1—2 from the data voltage lookup table LUT 1.

And, for the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the repeated display sub-unit S21, the corresponding target data voltage may be found from the data voltage lookup table LUT1 according to the gray-scale value in the original display data corresponding to these sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz1_2 from the data voltage lookup table LUT 1. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf1—2 from the data voltage lookup table LUT 1.

And, for the red sub-pixel, the green sub-pixel and the blue sub-pixel in the repeated display sub-unit S12, the corresponding target data voltage may be found from the data voltage lookup table LUT2 according to the gray-scale value in the original display data corresponding to these sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz2_2 from the data voltage lookup table LUT 2. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf2—2 from the data voltage lookup table LUT 2.

And, for the red sub-pixel, the green sub-pixel and the blue sub-pixel in the repeated display sub-unit S22, the corresponding target data voltage may be found from the data voltage lookup table LUT2 according to the gray-scale value in the original display data corresponding to these sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz2_2 from the data voltage lookup table LUT 2. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf2—2 from the data voltage lookup table LUT 2.

The other sub-pixels are used for determining the corresponding target data voltages in the same way, and are not described in detail herein.

(4) And driving the display panel according to the target data voltage so that each sub-pixel is charged with the corresponding target data voltage.

The embodiments of the present disclosure provide other driving methods of display panels, as shown in fig. 8, which are modified from the implementation in the above embodiments. Only the differences between the present embodiment and the above-described embodiments are described below, and their details are not repeated here.

When a large-sized (e.g., UHD) display panel displays, there may occur bright and dark vertical lines that are regularly generated when a still picture is displayed due to a difference in coupling voltage with the data lines. For example, as shown in fig. 8, the first column of sub-pixels R11 to R61 are bright, the second column of sub-pixels G11 to G61 and the third column of sub-pixels B11 to B61 are dark, the fourth column of sub-pixels R12 to R62 to seventh column of sub-pixels R13 to R63 are bright, the eighth column of sub-pixels G13 to G63 and the ninth column of sub-pixels B13 to B63 are dark, and the tenth column of sub-pixels R14 to R64 to the twelfth column of sub-pixels B14 to B64 are bright, so that a picture displayed on the display panel may have a bad phenomenon of vertical bright-dark stripes. Such that the area where the defect exists may include: a bright subpixel column group and a dark subpixel column group alternately arranged; wherein the bright subpixel column group comprises at least one subpixel column and the dark subpixel column group comprises at least one subpixel column; the bright region includes a bright subpixel column group and the dark region includes a dark subpixel column group. For example, as shown in connection with fig. 8, the first to sixth columns of sub-pixels R11 to R61 to B12 to B62 may be divided into one minimum repeated display unit, and the seventh to twelfth columns of sub-pixels R13 to R63 to B14 to B64 may be divided into another minimum repeated display unit. In the minimum repetitive display unit of the first to sixth columns of sub-pixels R11 to R61 to B12 to B62, the first to sixth columns of sub-pixels R11 to R61 and R12 to R62 to B12 to B62 may be the first repetitive display sub-unit S31, and the second and third columns of sub-pixels G11 to G61 and B11 to B61 may be the second repetitive display sub-unit S32. And, among the minimum repeated display units of the seventh to twelfth columns of sub-pixels R13 to R63 to B14 to B64, the seventh and tenth columns of sub-pixels R13 to R63 and R14 to R64 to B14 to B64 may be the first repeated display sub-unit S41, and the eighth and ninth columns of sub-pixels G13 to G63 and B13 to B63 may be the second repeated display sub-unit S42.

The present disclosure is described in detail below with reference to fig. 8. It should be noted that, in this embodiment, the disclosure is better explained, but the disclosure is not limited thereto.

(1) When the defect phenomenon of vertical bright and dark stripes with repeatability of the display picture of the display panel is determined, determining the minimum repeated display unit in the defective area: the sub-pixels in adjacent six columns serve as the minimum repeating display unit.

(2) In the minimum repeated display unit of the first to sixth columns of sub-pixels R11 to R61 to B12 to B62, the first and fourth columns of sub-pixels R11 to R61 and R12 to R62 to B12 to B62 may be the first repeated display sub-unit S31, and the second and third columns of sub-pixels G11 to G61 and B11 to B61 may be the second repeated display sub-unit S32. And, among the minimum repeated display units of the seventh to twelfth columns of sub-pixels R13 to R63 to B14 to B64, the seventh and tenth columns of sub-pixels R13 to R63 and R14 to R64 to B14 to B64 may be the first repeated display sub-unit S41, and the eighth and ninth columns of sub-pixels G13 to G63 and B13 to B63 may be the second repeated display sub-unit S42.

(3) The gray scale value of each sub-pixel can be determined from the original display data, so that for the red sub-pixel, the green sub-pixel and the blue sub-pixel in the repeated display sub-unit S31, the corresponding target data voltage can be found from the data voltage lookup table LUT1 according to the gray scale values in the original display data corresponding to the sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz1_2 from the data voltage lookup table LUT 1. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf1—2 from the data voltage lookup table LUT 1.

And, for the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the repeated display sub-unit S41, the corresponding target data voltage may be found from the data voltage lookup table LUT1 according to the gray-scale value in the original display data corresponding to these sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz1_2 from the data voltage lookup table LUT 1. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf1—2 from the data voltage lookup table LUT 1.

And, for the green sub-pixel and the blue sub-pixel in the repeated display sub-unit S32, the corresponding target data voltage may be found from the data voltage lookup table LUT2 according to the gray-scale value in the original display data corresponding to these sub-pixels. For example, taking a green sub-pixel as an example with a 2 gray scale value, if the green sub-pixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the green sub-pixel is found to be Vrz1_2 from the data voltage lookup table LUT 2. If the green sub-pixel corresponds to a data voltage of negative polarity, the target data voltage corresponding to the red sub-pixel is found to be vrf1—2 from the data voltage lookup table LUT 2.

And, for the green sub-pixel and the blue sub-pixel in the repeated display sub-unit S42, the corresponding target data voltage may be found from the data voltage lookup table LUT2 according to the gray-scale value in the original display data corresponding to these sub-pixels. For example, taking a green sub-pixel as an example with a 2 gray scale value, if the green sub-pixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the green sub-pixel is found to be Vrz1_2 from the data voltage lookup table LUT 2. If the green sub-pixel corresponds to a data voltage of negative polarity, the target data voltage corresponding to the red sub-pixel is found to be vrf1—2 from the data voltage lookup table LUT 2.

The embodiments of the present disclosure provide other driving methods of display panels, as shown in fig. 9, which are modified from the implementation in the above embodiments. Only the differences between the present embodiment and the above-described embodiments are described below, and their details are not repeated here.

When a large-sized (e.g., UHD) display panel displays, bright and dark blocks may occur, which may cause regularity in displaying a still picture due to a difference in coupling voltage with the data lines. For example, as shown in fig. 9, three rows and three columns of sub-pixels are taken as an example, wherein red sub-pixels R11 to R31, green sub-pixels G11 to G31 and blue sub-pixels B11 to B31 are bright, red sub-pixels R12 to R32, green sub-pixels G12 to G32 and blue sub-pixels B12 to B32 are dark, red sub-pixels R13 to R33, green sub-pixels G13 to G33 and blue sub-pixels B13 to B33 are bright, red sub-pixels R14 to R34, green sub-pixels G14 to G34 and blue sub-pixels B14 to B34 are dark, red sub-pixels R41 to R61, green sub-pixels G41 to G61 and blue sub-pixels B41 to B61 are dark, red sub-pixels R42 to R62, green sub-pixels G42 to G62 and blue sub-pixels B42 to B62 are bright, red sub-pixels R43 to R63, green sub-pixels G43 to G63 and blue sub-pixels B43 to B64 are bright, and red sub-pixels R44 to R64 to B64 are bright. Alternatively, as shown in fig. 10, three rows and three columns of sub-pixels are taken as an example, wherein red sub-pixels R11 to R31, green sub-pixels G11 to G31 and blue sub-pixels B11 to B31 are dark, red sub-pixels R12 to R32, green sub-pixels G12 to G32 and blue sub-pixels B12 to B32 are bright, red sub-pixels R13 to R33, green sub-pixels G13 to G33 and blue sub-pixels B13 to B33 are dark, red sub-pixels R14 to R34, green sub-pixels G14 to G34 and blue sub-pixels B14 to B34 are bright, red sub-pixels R41 to R61, green sub-pixels G41 to G61 and blue sub-pixels B41 to B61 are bright, red sub-pixels R42 to R62, green sub-pixels G42 to G62 and blue sub-pixels B42 to B62 are dark, red sub-pixels R43 to R63 and blue sub-pixels G43 to G63 and red sub-pixels R44 to B64 are dark, and red sub-pixels R44 to R64 to B64 are dark.

Therefore, the picture displayed by the display panel may have bad phenomena of regular bright and dark blocks. Such that the area where the defect exists may include: a bright subpixel group and a dark subpixel group in a checkerboard arrangement; wherein the bright subpixel group comprises at least one subpixel and the dark subpixel row group comprises at least one subpixel; the bright areas include bright subpixel groups and the dark areas include dark subpixel groups. Illustratively, the number of subpixels in the bright subpixel group and the dark subpixel group are the same, and the arrangement rule is the same. For example, as shown in fig. 9, the red sub-pixels R11 to R61, the green sub-pixels G11 to G61, the blue sub-pixels B11 to B61, the red sub-pixels R12 to R62, the green sub-pixels G12 to G62, and the blue sub-pixels B12 to B62 may be divided into one minimum repeated display unit. The red sub-pixels R13 to R63, the green sub-pixels G13 to G63, the blue sub-pixels B13 to B63, the red sub-pixels R14 to R64, the green sub-pixels G14 to G64, and the blue sub-pixels B14 to B64 may be divided into another minimum repeated display unit.

In the minimum repeated display units of the red, green, blue, and red sub-pixels R11 to R61, G11 to G61, B11 to B61, R12 to R62, G12 to G62, and B12 to B62, the red, green, and blue sub-pixels R11 to R31, G11 to G31, and B11 to B31, and R42 to R62, G42 to G62, and B42 to B62 may be the first repeated display unit S51, and the red, green, and blue sub-pixels R41 to R61, and B41 to B61, and red, green, and blue sub-pixels R12 to R32, G12 to G32, and B12 to B32 may be the second repeated display unit S52.

And, in the minimum repeated display units of the red, green, blue, and red sub-pixels R13 to R63, G13 to G63, B13 to B63, R14 to R64, G14 to G64, and B14 to B64, the red, green, and blue sub-pixels R13 to R33, G13 to G33, and B33, and R44 to R64, G44 to G64, and B44 to B64 may be the first repeated display unit S61, and the red, green, and blue sub-pixels R43 to R63, G43 to G63, and B43 to B63, and red, green, and blue sub-pixels R14 to R34, G14 to G34, and B14 to B34 may be the second repeated display unit S62.

For example, as shown in fig. 10, the red sub-pixels R11 to R61, the green sub-pixels G11 to G61, the blue sub-pixels B11 to B61, the red sub-pixels R12 to R62, the green sub-pixels G12 to G62, and the blue sub-pixels B12 to B62 may be divided into one minimum repeated display unit. The red sub-pixels R13 to R63, the green sub-pixels G13 to G63, the blue sub-pixels B13 to B63, the red sub-pixels R14 to R64, the green sub-pixels G14 to G64, and the blue sub-pixels B14 to B64 may be divided into another minimum repeated display unit.

In the minimum repeated display units of the red sub-pixels R11 to R61, the green sub-pixels G11 to G61, the blue sub-pixels B11 to B61, the red sub-pixels R12 to R62, the green sub-pixels G12 to G62, and the blue sub-pixels B12 to B62, the red sub-pixels R11 to R31, the green sub-pixels G11 to G31, and the blue sub-pixels B11 to B31, and the red sub-pixels R42 to R62, the green sub-pixels G42 to G62, and the blue sub-pixels B42 to B62 may be the second repeated display sub-unit S52, and the red sub-pixels R41 to R61, the green sub-pixels G41 to G61, and the blue sub-pixels B41 to B61, and the red sub-pixels R12 to R32, the green sub-pixels G12 to G32, and the blue sub-pixels B12 to B32 may be the first repeated display sub-unit S51.

And, in the minimum repeated display units of the red, green, blue, and red sub-pixels R13 to R63, G13 to G63, B13 to B63, R14 to R64, G14 to G64, and B14 to B64, the red, green, and blue sub-pixels R13 to R33, G13 to G33, and B33, and R44 to R64, G44 to G64, and B44 to B64 may be the second repeated display unit S62, and the red, green, and blue sub-pixels R43 to R63, G43 to G63, and B43 to B63, and red, green, and blue sub-pixels R14 to R34, G14 to G34, and B14 to B34 may be the first repeated display unit S61.

The present disclosure is described in detail below with reference to fig. 9. It should be noted that, in this embodiment, the disclosure is better explained, but the disclosure is not limited thereto.

(1) When the defect phenomenon of the bright and dark areas with repeatability of the display screen of the display panel is determined, the minimum repeated display unit in the defective area is determined: the sub-pixels in adjacent six rows and six columns serve as the minimum repeated display unit.

(2) In the minimum repeated display units of the red, green, blue, red, green, and blue sub-pixels R11 to R61, G11 to G61, B11 to B61, R12 to R62, G12 to G62, and B12 to B62, the red, green, and blue sub-pixels R11 to R31, G11 to G31, and B42 to R62, and G42 to G62, and B42 to B62 may be the first repeated display unit S51, and the red, green, and blue sub-pixels R41 to R61, G41 to B61, and B12 to R32, green, and blue sub-pixels G12 to G32, and B12 to B32 may be the second repeated display unit S52.

(3) The gray scale value of each sub-pixel can be determined from the original display data, so that for the red sub-pixel, the green sub-pixel and the blue sub-pixel in the repeated display sub-unit S51, the corresponding target data voltage can be found from the data voltage lookup table LUT1 according to the gray scale values in the original display data corresponding to these sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz1_2 from the data voltage lookup table LUT 1. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf1—2 from the data voltage lookup table LUT 1.

And, for the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the repeated display sub-unit S61, the corresponding target data voltages may be found from the data voltage lookup table LUT1 according to the gray-scale values in the original display data corresponding to these sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz1_2 from the data voltage lookup table LUT 1. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf1—2 from the data voltage lookup table LUT 1.

And, for the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the repeated display sub-unit S52, the corresponding target data voltage may be found from the data voltage lookup table LUT2 according to the gray-scale value in the original display data corresponding to these sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz1_2 from the data voltage lookup table LUT 2. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf1—2 from the data voltage lookup table LUT 2.

And, for the red sub-pixel, the green sub-pixel and the blue sub-pixel in the repeated display sub-unit S62, the corresponding target data voltage may be found from the data voltage lookup table LUT2 according to the gray-scale value in the original display data corresponding to these sub-pixels. For example, taking a red subpixel as an example with a 2 gray scale value, if the red subpixel corresponds to a positive polarity data voltage, the target data voltage corresponding to the red subpixel is found to be Vrz1_2 from the data voltage lookup table LUT 2. If the red subpixel corresponds to a negative data voltage, the target data voltage corresponding to the red subpixel is found to be vrf1—2 from the data voltage lookup table LUT 2.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present disclosure without departing from the spirit or scope of the disclosure. Thus, the present disclosure is intended to include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A driving method of a display panel, comprising:

Driving the display panel according to the target data voltage so that each sub-pixel is charged with the corresponding target data voltage;

the minimal repeated display unit comprises a bright area and a dark area; wherein the bright area is divided into a first repeated display subunit and the dark area is divided into a second repeated display subunit;

2. The method of driving a display panel according to claim 1, wherein the region where the defect exists comprises: a bright subpixel row group and a dark subpixel row group alternately arranged; wherein the bright subpixel row group comprises at least one subpixel row and the dark subpixel row group comprises at least one subpixel row;

3. The method of driving a display panel according to claim 1, wherein the region where the defect exists comprises: a bright subpixel column group and a dark subpixel column group alternately arranged; wherein the bright subpixel column group comprises at least one subpixel column and the dark subpixel column group comprises at least one subpixel column;

4. The method of driving a display panel according to claim 1, wherein the region where the defect exists comprises: a bright subpixel group and a dark subpixel group in a checkerboard arrangement; wherein the bright subpixel group comprises at least one subpixel and the dark subpixel group comprises at least one subpixel;

5. The driving method of a display panel according to any one of claims 1 to 4, wherein the display panel includes a plurality of sub-pixels of different colors;

6. The method of driving a display panel according to any one of claims 1 to 4, wherein the method of determining a data voltage lookup table for each of the repeated display subunits one by one comprises:

7. The driving method of a display panel according to claim 6, wherein the display panel includes a plurality of sub-pixels of different colors;

the debugging picture comprises a solid-color picture;

8. A display device, comprising:

a display panel including a source driving circuit;

a timing controller configured to:

The source driving circuit is configured to drive the display panel according to the target data voltage so that each sub-pixel is charged with the corresponding target data voltage;

wherein the minimal repeating display unit includes a bright area and a dark area; wherein the bright area is divided into a first repeated display subunit and the dark area is divided into a second repeated display subunit;

9. The display device of claim 8, wherein the timing controller stores a data voltage lookup table for each of the repeating display subunits in a one-to-one correspondence.