CN113763857A

CN113763857A - Display panel driving method, driving device and computer equipment

Info

Publication number: CN113763857A
Application number: CN202111009028.8A
Authority: CN
Inventors: 张元平; 袁海江
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-12-07
Anticipated expiration: 2041-08-31
Also published as: CN113763857B

Abstract

The application discloses a display panel driving method, a driving device and computer equipment, and belongs to the technical field of display. The display panel driving method can acquire the actual gray scale voltage of a row of sub-pixels when each row of sub-pixels is scanned. If the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is greater than or equal to the voltage threshold, that is, the change of the gray scale voltage is large, the row scanning time of the next row of sub-pixels is set to be greater than the preset scanning time, so that the charging amount of the sub-pixels is increased, the charging amount of the sub-pixels is closer to the charging amount required by the sub-pixels to emit light, and the display effect of the display panel is improved.

Description

Display panel driving method, driving device and computer equipment

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display panel driving method, a display panel driving device, and a computer apparatus.

Background

The display panel comprises a plurality of scanning lines, a plurality of data lines, a plurality of sub-pixels and a plurality of switch circuits which correspond to the sub-pixels one by one. When the display panel works, the scanning lines output scanning signals to control the switch circuit to be conducted. The data line writes gray scale voltage into the corresponding sub-pixel through the switch circuit, charges the sub-pixel and enables the corresponding sub-pixel to emit light. In general, a display panel outputs a scan signal from a first scan line to a plurality of scan lines to control a plurality of sub-pixels to emit light row by row in displaying one frame of image.

In the related art, when the display panel displays a frame of image, the time for each scan line to output a scan signal is equal, and the voltage value of each data line to output a gray scale voltage is changed continuously.

However, the data lines have resistance, which affects the variation of gray scale voltage in the data lines, and this may cause the charge amount of the data lines to some rows of sub-pixels to be less than the charge amount required by the sub-pixels to emit light, which affects the display effect of the display panel.

Disclosure of Invention

The application provides a display panel driving method, a driving device and computer equipment, wherein the line scanning time of a next row of sub-pixels is adjusted according to the actual gray scale voltage of a previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, so that the charging amount of the sub-pixels is closer to the charging amount required by the sub-pixels to emit light, and the display effect of the display panel is improved. The technical scheme is as follows:

in a first aspect, a method for driving a display panel is provided, where the display panel has N rows of sub-pixels, and a scanning order of the N rows of sub-pixels is from 1 st row of sub-pixels to N th row of sub-pixels, and the method includes:

scanning the sub-pixels in the 1 st row according to the preset scanning time of the sub-pixels in the 1 st row, and inputting the target gray scale voltage of the sub-pixels in the 1 st row to the sub-pixels in the 1 st row;

for any two adjacent rows of sub-pixels in the N rows of sub-pixels, if a previous row of sub-pixels in the two rows of sub-pixels is being scanned, acquiring actual gray scale voltage of the previous row of sub-pixels;

if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels in the two rows of sub-pixels is larger than or equal to the voltage threshold, setting the row scanning time of the next row of sub-pixels to be larger than the preset scanning time of the next row of sub-pixels;

and scanning the next row of sub-pixels according to the row scanning time of the next row of sub-pixels, and inputting the target gray scale voltage of the next row of sub-pixels to the next row of sub-pixels.

In the present application, the sub-pixels in the 1 st row are scanned according to the preset scanning time of the sub-pixels in the 1 st row, and the target gray scale voltage of the sub-pixels in the 1 st row is input. Then, for any two adjacent rows of sub-pixels in the N rows of sub-pixels, if the previous row of sub-pixels is being scanned, the actual gray scale voltage of the previous row of sub-pixels is obtained, that is, the actual gray scale voltage of the row of sub-pixels is obtained every time the previous row of sub-pixels is scanned. If the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is greater than or equal to the voltage threshold, that is, the change of the gray scale voltage is large, the row scanning time of the next row of sub-pixels is set to be greater than the preset scanning time, so that when the next row of sub-pixels is scanned according to the row scanning time of the next row of sub-pixels and the target gray scale voltage is input to the next row of sub-pixels, the charging amount of the sub-pixels can be increased, the charging amount of the sub-pixels is closer to the charging amount required by the sub-pixels to emit light, and the display effect of the display panel is further improved.

Optionally, after acquiring the actual grayscale voltage of the previous row of sub-pixels, the method further includes:

and if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is smaller than the voltage threshold and larger than zero, setting the row scanning time of the next row of sub-pixels to be smaller than the preset scanning time of the next row of sub-pixels.

and if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is equal to zero, setting the row scanning time of the next row of sub-pixels to be equal to the preset scanning time of the next row of sub-pixels.

Optionally, if a voltage difference between an actual gray scale voltage of the previous row of sub-pixels and a target gray scale voltage of a next row of sub-pixels in the two rows of sub-pixels is greater than a voltage threshold, setting a row scanning time of the next row of sub-pixels to be greater than a preset scanning time of the next row of sub-pixels, including:

acquiring a corresponding adjustment value from a preset corresponding relation according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, wherein the preset corresponding relation is the corresponding relation among the actual gray scale voltage, the target gray scale voltage and the adjustment value, and when the voltage difference between the actual gray scale voltage and the corresponding target gray scale voltage in the preset corresponding relation is greater than or equal to the voltage threshold value, the corresponding adjustment value is a positive value;

and taking the sum of the preset scanning time of the next row of sub-pixels and the obtained adjustment value as the row scanning time of the next row of sub-pixels.

Optionally, the scanning the next row of sub-pixels according to the row scanning time of the next row of sub-pixels includes:

taking the sum of the pre-charging time and the line scanning time of the next row of sub-pixels as the actual scanning time of the next row of sub-pixels;

and scanning the next row of sub-pixels within the actual scanning time of the next row of sub-pixels.

In a second aspect, there is provided a display panel driving apparatus for driving a display panel, the display panel having N rows of sub-pixels, the N rows of sub-pixels being scanned in a sequence from a 1 st row of sub-pixels to an N th row of sub-pixels, the apparatus comprising:

the scanning module is used for scanning the sub-pixels in the 1 st row according to the preset scanning time of the sub-pixels in the 1 st row and inputting the target gray scale voltage of the sub-pixels in the 1 st row to the sub-pixels in the 1 st row;

the acquisition module is used for acquiring the actual gray scale voltage of the previous row of sub-pixels if the previous row of sub-pixels in the two rows of sub-pixels is scanned for any two adjacent rows of sub-pixels in the N rows of sub-pixels;

the setting module is used for setting the line scanning time of the next row of sub-pixels to be longer than the preset scanning time of the next row of sub-pixels if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels in the two rows of sub-pixels is larger than or equal to a voltage threshold;

the scanning module is further configured to scan the next row of sub-pixels according to the row scanning time of the next row of sub-pixels, and input the target gray scale voltage of the next row of sub-pixels to the next row of sub-pixels.

Optionally, the setting module is further configured to set the line scanning time of the next row of sub-pixels to be less than the preset scanning time of the next row of sub-pixels if a voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is less than the voltage threshold and greater than zero.

Optionally, the setting module is further configured to set the line scanning time of the next row of sub-pixels to be equal to the preset scanning time of the next row of sub-pixels if a voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is equal to zero.

Optionally, the apparatus further comprises: a detection module;

the detection module is used for storing the actual gray scale voltage of the previous row of sub-pixels and establishing a preset corresponding relation according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, the preset corresponding relation is the corresponding relation among the actual gray scale voltage, the target gray scale voltage and an adjustment value, and when the voltage difference between the actual gray scale voltage and the corresponding target gray scale voltage in the preset corresponding relation is larger than or equal to the voltage threshold value, the corresponding adjustment value is a positive value.

Optionally, the setting module is configured to:

Optionally, the scanning module is configured to:

In a third aspect, there is provided a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program, when executed by the processor, implementing the display panel driving method of the first aspect.

In a fourth aspect, there is provided a computer-readable storage medium storing a computer program which, when executed by a processor, implements the display panel driving method of the first aspect described above.

It is understood that, for the beneficial effects of the second aspect, the third aspect and the fourth aspect, reference may be made to the description of the first aspect, and details are not described herein again.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a computer device according to an embodiment of the present disclosure;

fig. 2 is a first flowchart of a display panel driving method according to an embodiment of the present disclosure;

fig. 3 is a second flowchart of a display panel driving method according to an embodiment of the present application;

fig. 4 is a third flowchart of a display panel driving method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a preset scanning time, a line scanning time, a pre-charging time, and an actual scanning time of each row of sub-pixels according to an embodiment of the present application;

fig. 6 is a schematic block diagram of a first display panel driving apparatus provided in a second embodiment of the present application;

fig. 7 is a schematic block diagram of a second display panel driving apparatus provided in the second embodiment of the present application;

fig. 8 is a schematic block diagram of a computer device provided in the third embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

It should be understood that reference to "a plurality" in this application means two or more. In the description of the present application, "/" means "or" unless otherwise stated, for example, a/B may mean a or B; "and/or" herein is only an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, for the convenience of clearly describing the technical solutions of the present application, the terms "first", "second", and the like are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

Before explaining the embodiments of the present application in detail, an application scenario of the embodiments of the present application will be described.

The display panel comprises a plurality of scanning lines, a plurality of data lines, a plurality of sub-pixels and a plurality of switch circuits which correspond to the sub-pixels one by one. When the display panel works, a scanning signal is applied to the scanning line, so that the scanning line outputs the scanning signal to control the switch circuit to be conducted. The data line applies gray scale voltage to write the gray scale voltage into the corresponding sub-pixel through the switch circuit, and charges the sub-pixel to make the corresponding sub-pixel emit light. The luminance of the sub-pixel may be expressed in gray scale values. In general, a display panel outputs a scan signal from a first scan line to a plurality of scan lines to control a plurality of sub-pixels to emit light row by row in displaying one frame of image.

In the related art, when the display panel displays a frame of image, the time for each scan line to output the scan signal is equal, and the voltage value of each data line to output the gray scale voltage is continuously changed. For example, the common voltage of the display panel is 0V (volt). When the display panel displays a pure color image, assuming that the gray scale value of each sub-pixel is thirty-two gray scales, the target gray scale voltage of each sub-pixel may be 8V or-8V. The display panel may operate as follows:

in a first time period, applying a scanning signal to a scanning line connected with the sub-pixels in the 1 st row, and applying 8V gray scale voltage to each data line;

in a second time period, applying a scanning signal to a scanning line connected with the sub-pixels in the 2 nd row, and applying 8V gray scale voltage to each data line;

in a third time period, applying a scanning signal to a scanning line connected with the sub-pixels in the 3 rd row, and applying a gray scale voltage of-8V to each data line;

in the fourth time period, the scanning signal is applied to the scanning line connected with the sub-pixels in the 4 th row, and a gray scale voltage … … of-8V is applied to each data line

The duration of the first time period, the duration of the second time period, the duration of the third time period, and the duration … … of the fourth time period are all equal.

In the above process, in the first period, the actual gray scale voltage written into the sub-pixels in the row 1 by the data line needs to gradually increase from 0V to 8V; in the second time period, since the data line may have a residual voltage greater than 0V after the first time period, the actual gray scale voltage written into the row 2 sub-pixels by the data line does not need to rise from 0V, which causes the charge amount of the row 2 sub-pixels to be greater than that of the row 1 sub-pixels, and the luminance of the row 2 sub-pixels to be greater than that of the row 1 sub-pixels. In the third time period, since the data line may have a residual voltage greater than 0V after the second time period, the actual gray scale voltage written by the data line to the third row needs to be changed from greater than 0V to-8V, which causes the charge amount of the sub-pixels in the 3 rd row to be smaller than that of the sub-pixels in the 2 nd row, and the luminance of the sub-pixels in the 3 rd row to be smaller than that of the sub-pixels in the 2 nd row. Similarly, the luminance of the sub-pixel in row 4 is greater than that of the sub-pixel … … in row 3, and bright and dark lines are formed on the display panel, which affects the display effect of the display panel.

Therefore, the embodiments of the present application provide a method for driving a display panel, which can make the charge amount of a sub-pixel closer to the charge amount required by the sub-pixel to emit light when the display panel displays a pure color image, thereby improving the display effect of the display panel.

The first embodiment is as follows:

the display panel driving method provided by the embodiment of the application can be applied to computer equipment to drive the display panel. Fig. 1 is a schematic structural diagram of a computer device 10 according to an embodiment of the present application. As shown in fig. 1, in some embodiments, the computer device 10 includes a timing control chip 102, a level conversion unit 104, a scanning unit 106, and a driving unit 108. The timing control chip 102, the level conversion unit 104, the scanning unit 106 and the driving unit 108 cooperate to implement the display panel driving method provided by the embodiment of the present application.

The following explains the display panel driving method provided in the embodiments of the present application in detail.

The display panel 20 has N rows of sub-pixels, and the scanning order of the N rows of sub-pixels is from the 1 st row of sub-pixels to the N th row of sub-pixels. The display panel driving method is applied to a computer apparatus 10, and the computer apparatus 10 is configured to drive a display panel 20 according to image data of an image to be displayed. The image data of the image to be displayed includes a target gray scale voltage of each sub-pixel in the display panel 20. In the embodiment of the present application, the display panel 20 displays a pure color image, the gray scale value of each sub-pixel is the same, and the target gray scale voltage of each row of sub-pixels is the same. For example, the common voltage of the display panel 20 is 0V (volt). When the display panel 20 displays a pure color image, assuming that the gray scale value of each sub-pixel is thirty-two gray scales, the target gray scale voltage of each sub-pixel may be 8V or-8V. Then, in some embodiments, the target gray scale voltage of the sub-pixels of the row 1 of the display panel 20 is 8V; the target gray scale voltage of the sub-pixels in the 2 nd row is 8V; the target gray scale voltage of the sub-pixels in the 3 rd row is-8V; the target gray scale voltage of the sub-pixel of the 4 th row is-8V … …, and the target gray scale voltage of the sub-pixel of the N-3 th row is 8V; the target gray scale voltage of the sub-pixel of the N-2 th row is 8V; the target gray scale voltage of the sub-pixels of the N-1 th row is-8V; the target gray scale voltage of the sub-pixels in the Nth row is-8V.

Fig. 2 to fig. 4 are flowcharts of three display panel driving methods provided in the embodiment of the present application. Referring to fig. 2 to 4, the method includes the following steps S110 to S140.

S110, the computer device 10 scans the sub-pixels in the 1 st row according to the preset scanning time t01 of the sub-pixels in the 1 st row, and inputs the target gray scale voltage of the sub-pixels in the 1 st row to the sub-pixels in the 1 st row.

Fig. 5 is a schematic diagram of preset scanning time, line scanning time, pre-charging time, and actual scanning time of each row of sub-pixels according to an embodiment of the present application. Referring to FIG. 5, in operation, the computer device 10 generates a frequency signal M1, and the structure of the frequency signal M1 may be as shown in FIG. 5. The frequency signal M1 includes N high level signals spaced apart from each other. Among the N high level signals: the 1 st high level signal corresponds to the sub-pixel of the 1 st row, and the duration t01 of the 1 st high level signal is the preset scanning time of the sub-pixel of the 1 st row; the 2 nd high level signal corresponds to the sub-pixels in the 2 nd row, a duration t02 of the 2 nd high level signal is a preset scanning time … … of the sub-pixels in the 2 nd row, the nth high level signal corresponds to the sub-pixels in the nth row, and a duration t0N of the nth high level signal is a preset scanning time of the sub-pixels in the nth row. In the frequency signal M1, the duration t01, t02, t03 … …, t0N of each high level signal are all equal. In other words, the preset scanning time of each row of the N rows of the sub-pixels of the display panel 20 is equal. The preset scanning time of each row of sub-pixels, i.e. t01, t02, t03 … … t0N, is generally determined by the frame rate of the display panel 20 (the number of frames in one second displayed by the display panel 20), and is a preset time parameter.

The computer device 10 may also input the target gray scale voltage of the row 1 sub-pixel to the row 1 sub-pixel when the row 1 sub-pixel is scanned according to the preset scanning time t01 of the row 1 sub-pixel. That is, when the sub-pixels in the 1 st row are scanned, the target gray scale voltage of the sub-pixels in the 1 st row is applied to each data line. Taking the foregoing example as an example, in step S110, the computer further applies a voltage of 8V to each data line when scanning the sub-pixels in the 1 st row.

In some embodiments, the "computer device 10 scans the 1 st row of sub-pixels according to the preset scanning time t01 of the 1 st row of sub-pixels" in step S110 may include the following steps S112 and S114.

At S112, the computer device 10 takes the sum of the precharge time t0 and the preset scanning time t01 of the sub-pixel of the 1 st row as the actual scanning time t1 of the sub-pixel of the 1 st row.

The precharge time t0 is also a predetermined, fixed time parameter. For example, the precharge time t0 may be 1 μ S (microseconds). The computer device 10 takes the sum of the precharge time t0 and the preset scanning time t01 of the sub-pixels of the 1 st row as the actual scanning time t1 of the sub-pixels of the 1 st row. The actual scan time t1 for row 1 sub-pixels refers to the length of time it actually takes for the computer device 10 to scan the row 1 sub-pixels.

In some embodiments, the frequency signal M1 may be generated by the timing control chip 102 in the computer device 10. Step S112 may be performed by the level conversion unit 104 in the computer device 10.

S114, the computer device 10 scans the sub-pixels of the 1 st row within the actual scanning time t1 of the sub-pixels of the 1 st row.

During the actual scanning time t1 of the sub-pixel in the 1 st row, the computer device 10 applies a scanning signal to the scanning line corresponding to the sub-pixel in the 1 st row, so that the scanning line corresponding to the sub-pixel in the 1 st row can output the scanning signal to scan the sub-pixel in the 1 st row.

In some embodiments, step S114 may be performed by the scanning unit 106 in the computer device 10. The step S110 of inputting the target gray-scale voltage of the sub-pixel of the row 1 to the sub-pixel of the row 1 by the computer device 10 may be performed by the driving unit 108 in the computer device 10.

S120, for any two adjacent rows of sub-pixels in the N rows of sub-pixels, if the computer device 10 is scanning a previous row of sub-pixels in the two rows of sub-pixels, obtaining an actual gray scale voltage of the previous row of sub-pixels.

When the display panel driving method is executed, the computer device 10 inputs a target gray scale voltage to a row of sub-pixels while scanning the row of sub-pixels, so as to drive the row of sub-pixels of the display panel 20 to emit light. For any two adjacent rows of sub-pixels in the N rows of sub-pixels, when the computer device 10 scans the previous row of sub-pixels in the two rows of sub-pixels, the corresponding target gray scale voltage is input to the previous row of sub-pixels, and the actual gray scale voltage of the previous row of sub-pixels is also obtained. In other words, for the sub-pixels of the row 1 to the sub-pixels of the row N-1, the computer device 10 also obtains the actual gray scale voltage of the sub-pixels of the row when scanning the sub-pixels of each row.

For example, for the sub-pixels in row 1 and the sub-pixels in row 2, if the computer device 10 scans the sub-pixels in row 1 and inputs the target gray scale voltage of the sub-pixels in row 1 to the sub-pixels in row 1, the computer device 10 further obtains the actual gray scale voltage of the sub-pixels in row 1.

For the sub-pixels in row 2 and the sub-pixels in row 3, if the computer device 10 is scanning the sub-pixels in row 2 and inputting the target gray scale voltage of the sub-pixels in row 2 to the sub-pixels in row 2, the computer device 10 further obtains the actual gray scale voltage of the sub-pixels in row 2.

……

For the N-1 th row of sub-pixels and the N-1 th row of sub-pixels, if the computer device 10 is scanning the N-1 th row of sub-pixels and inputting the target gray scale voltage of the N-1 th row of sub-pixels to the N-1 th row of sub-pixels, the computer device 10 further obtains the actual gray scale voltage of the N-1 th row of sub-pixels.

In some embodiments, step S120 may also be performed by the timing control chip 102 in the computer device 10.

S130, the computer device 10 sets the line scanning time of the next row of sub-pixels according to the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels in the two rows of sub-pixels.

For any two adjacent rows of N rows of sub-pixels, the computer device 10 may obtain the actual gray scale voltage of the previous row of sub-pixels when scanning the previous row of sub-pixels. Meanwhile, the computer device 10 may acquire the target grayscale voltage of the subsequent one of the two rows of subpixels from the image data of the image to be displayed. At this time, the computer device 10 may set the row scanning time of the next row of sub-pixels according to the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels.

In some embodiments, step S130 may be performed by the timing control chip 102 in the computer device 10. Step S130 may include steps S132 to S136 as follows. In step S132, see fig. 2, step S134, see fig. 3, and step S136, see fig. 4.

S132, if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels in the two rows of sub-pixels is greater than or equal to the voltage threshold, the computer device 10 sets the row scanning time of the next row of sub-pixels to be greater than the preset scanning time of the next row of sub-pixels.

S134, if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels in the two rows of sub-pixels is smaller than the voltage threshold and larger than zero, setting the row scanning time of the next row of sub-pixels to be smaller than the preset scanning time of the next row of sub-pixels.

S136, if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels in the two rows of sub-pixels is equal to zero, setting the row scanning time of the next row of sub-pixels to be equal to the preset scanning time of the next row of sub-pixels.

After obtaining the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, the computer device 10 may obtain a voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels. The voltage difference here refers to an absolute value of a difference between an actual gray scale voltage of a previous row of sub-pixels and a target gray scale voltage of a next row of sub-pixels. For example, when the actual gray scale voltage of the previous row of sub-pixels is 7V and the target gray scale voltage of the next row of sub-pixels is 8V, the voltage difference obtained by the computer device 10 is 1V; when the actual gray scale voltage of the previous row of sub-pixels is 7V and the target gray scale voltage of the next row of sub-pixels is 6V, the voltage difference obtained by the computer device 10 is also 1V.

After obtaining the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, the computer device 10 may set the row scanning time of the next row of sub-pixels according to the magnitude relationship between the voltage difference and the voltage threshold. The voltage threshold here may be a fixed value set in advance by the computer device 10, or may be obtained from image data of an image to be displayed. In some embodiments, the computer device 10 obtains the voltage threshold from the image data of the image to be displayed, and may be:

and taking the difference value between the maximum value of the target gray scale voltage and the common voltage in the image data of the image to be displayed as a voltage threshold value. For example, the common voltage of the display panel 20 is 0V, and when the display panel 20 displays a pure color image, if the target gray scale voltage of each sub-pixel can be 8V or-8V, the voltage threshold can be set to 8V. For another example, the common voltage of the display panel 20 is 0V, and when the display panel 20 displays a pure color image, if the target gray scale voltage of each sub-pixel can be 6V or-6V, the voltage threshold can be set to 6V. For another example, the common voltage of the display panel 20 is 8V, and when the display panel 20 displays a pure color image, if the target gray scale voltage of each sub-pixel can be 15V or 1V, the voltage threshold can be 7V.

When the computer device 10 sets the line scanning time of the next row of sub-pixels, if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is greater than or equal to the voltage threshold, the computer device 10 sets the line scanning time of the next row of sub-pixels to be greater than the preset scanning time of the next row of sub-pixels; if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is smaller than the voltage threshold and larger than zero, the computer device 10 sets the row scanning time of the next row of sub-pixels to be smaller than the preset scanning time of the next row of sub-pixels; if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is equal to zero, the computer device 10 sets the row scanning time of the next row of sub-pixels to be equal to the preset scanning time of the next row of sub-pixels. For example, when the common voltage of the display panel 20 is 0V, and the display panel 20 displays a pure color image, the target gray scale voltage of each sub-pixel may be 8V or-8V, and the voltage threshold is set to 8V, if the actual gray scale voltage of the sub-pixel in the previous row is 7V and the target gray scale voltage of the sub-pixel in the next row is 8V, the row scanning time of the sub-pixel in the next row is made smaller than the preset scanning time. And if the actual gray scale voltage of the previous row of sub-pixels is 7V and the target gray scale voltage of the next row of sub-pixels is-8V, enabling the row scanning time of the next row of sub-pixels to be larger than the preset scanning time. In this way, the computer device adjusts the duration t02, t03 … … t0N of the 2 nd to nth high level signals in the frequency signal M1 to obtain the frequency signal M2. The structure of the frequency signal M2 may be as shown in fig. 5. The frequency signal M2 includes N high level signals spaced apart from each other. Of the N high-level signals of the frequency signal M2: the 1 st high level signal corresponds to the sub-pixel of the 1 st row, and the duration t01 of the 1 st high level signal is the row scanning time of the sub-pixel of the 1 st row, which is equal to the preset scanning time of the sub-pixel of the 1 st row; the 2 nd high-level signal corresponds to the sub-pixels in the 2 nd row, a duration t02 of the 2 nd high-level signal is a row scanning time … … of the sub-pixels in the 2 nd row, the nth high-level signal corresponds to the sub-pixels in the nth row, and a duration t0N of the nth high-level signal is a row scanning time of the sub-pixels in the nth row.

In some embodiments, the timing control chip 102 in the computer device 10 may perform steps S132 to S136 simultaneously. The computer device 10 can achieve the purpose of simultaneously performing steps S132 to S136 by performing steps S1302 and S1304 as follows.

S1302, obtaining a corresponding adjustment value from a preset corresponding relation according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels.

The preset corresponding relation is the corresponding relation among the actual gray scale voltage, the target gray scale voltage and the adjustment value. When the voltage difference between the actual gray scale voltage and the corresponding target gray scale voltage in the preset corresponding relation is greater than or equal to the voltage threshold, the corresponding adjustment value is a positive value. When the voltage difference between the actual gray scale voltage and the corresponding target gray scale voltage in the preset corresponding relation is less than the voltage threshold and greater than zero, the corresponding adjustment value is a negative value. When the voltage difference between the actual gray scale voltage and the corresponding target gray scale voltage in the preset corresponding relation is equal to zero, the corresponding adjustment value is zero.

Three implementations of the preset correspondence relationship are explained in detail below. In the following three implementations, a case where the common voltage of the display panel 20 is 0V is taken as an example.

In a first possible implementation, the preset correspondence may be as in table 1 below:

TABLE 1

In Table 1, "A" column represents "actual gray scale voltage of sub-pixel in previous row", and "B" row represents "target gray scale voltage of sub-pixel in next row", and the unit of each adjustment value may be 10^-1μS。

Table 1 above may be preset and stored by the computer device 10. As can be seen from table 1, in this implementation manner, a unique adjustment value can be obtained from the preset corresponding relationship according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, and the adjustment value is signed positively or negatively. Since the sign of the adjustment value is determined according to the relationship between the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels and the voltage threshold, in this case, the step of determining the relationship between the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels and the voltage threshold is implicitly included in the preset corresponding relationship.

For example, the voltage threshold may be 8V. When the actual gray scale voltage of the current row of sub-pixels is-7.8V and the target gray scale voltage of the next row of sub-pixels is 8.0V, the adjustment value is +0.3 x 10^-1μ S. When the actual gray scale voltage of the current row of sub-pixels is 8.1V and the target gray scale voltage of the next row of sub-pixels is 8.0V, the adjustment value is-0.2 x 10^-1μS。

It should be noted that, in the embodiment of the present application, only table 1 is taken as an example to describe the first implementation manner of the preset correspondence, and table 1 does not limit the embodiment of the present application.

In a second possible implementation, the preset correspondence may be as follows in table 2:

TABLE 2

In Table 2, "A" column represents "actual gray scale voltage of sub-pixel in previous row", and "B" row represents "target gray scale voltage of sub-pixel in next row", and the unit of each adjustment value may be 10^-1μS。

Table 2 above may be preset and stored by the computer device 10. As can be seen from table 2, in this implementation, a unique adjustment value can be obtained from the preset corresponding relationship according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, but the adjustment value has no sign. In other words, the predetermined correspondence relationship does not implicitly include the step of determining the relationship between the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels and the voltage threshold. In this case, after obtaining the corresponding adjustment value from the preset corresponding relationship according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, the computer device 10 may further determine a magnitude relationship between a voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels and the voltage threshold according to the voltage threshold. When the voltage difference is greater than or equal to the voltage threshold value, assigning the adjustment value as positive; when the voltage difference is less than the voltage threshold and greater than zero, the adjustment value is assigned as negative. The implementation manner may be applicable to the case of voltage threshold determination, that is, may be applicable to the case that the computer device 10 does not need to calculate the voltage threshold after acquiring the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels.

For example, the actual gray scale voltage of the current row of sub-pixels is-7.8V, the target gray scale voltage of the next row of sub-pixels is 8.0V, and the adjustment value obtained by looking up the table 2 is 0.3 x 10^-1μ S. At this time, if the voltage threshold is 8V, the voltage difference is greater than the voltage threshold, the adjustment value is assigned as positive, and the obtained adjustment value is +0.3 × 10^-1μ S. The actual gray scale voltage of the current row of sub-pixels is 8.1V, the target gray scale voltage of the next row of sub-pixels is 8.0V, and the adjustment value obtained by looking up the table 2 is 0.2 x 10^-1μ S. At this time, if the voltage threshold is 8V, the voltage difference is smaller than the voltage threshold, the adjustment value is assigned as negative, and the obtained adjustment value is-0.2 x 10^-1μS。

It should be noted that, in the embodiment of the present application, table 2 is taken as an example to describe the second implementation manner of the preset correspondence, and table 2 does not limit the embodiment of the present application.

In a third possible implementation manner, the preset correspondence may include the following tables 3 and 4:

TABLE 3

TABLE 4

In tables 3 and 4, "A" column represents "actual gray scale voltage of previous row of sub-pixels," B "row represents" target gray scale voltage of next row of sub-pixels, "and the unit of each adjustment value may be 10^-1μS。

The above tables 3 and 4 may be preset and stored by the computer device 10. The implementation manner can be adapted to the situation that the voltage threshold is uncertain, that is, the implementation manner can be adapted to the situation that the computer device 10 needs to calculate the voltage threshold after acquiring the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels.

After calculating the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels and calculating the voltage threshold, the computer device 10 may obtain the adjustment value from one of tables 3 and 4 according to the magnitude relationship between the voltage difference and the voltage threshold. For example, when the actual gray scale voltage of the previous row of sub-pixels is 1V, and the target gray scale voltage of the next row of sub-pixels is-1V, the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is 2V. At this time, if the voltage threshold is 1V, the voltage difference is greater than the voltage threshold, and the adjustment value can be obtained from table 3, and the adjustment value is 0.5 × 10^-1μ S. If the voltage threshold is 3V, the voltage difference is smaller than the voltage threshold, and the adjustment value can be obtained from table 4, and the adjustment value is-0.5 x 10^-1μS。

It should be noted that, in the embodiment of the present application, only tables 3 and 4 are taken as examples to describe the second implementation manner of the preset correspondence, and table 2 does not limit the embodiment of the present application.

And S1304, taking the sum of the preset scanning time of the next row of sub-pixels and the obtained adjustment value as the row scanning time of the next row of sub-pixels.

And for the sub-pixels in the next row in any two adjacent rows, taking the sum of the preset scanning time of the sub-pixels in the next row and the adjustment value corresponding to the target gray scale voltage of the sub-pixels in the row obtained in the step S1302 as the row scanning time of the sub-pixels in the row.

Taking the above table 1 as an example, when the actual gray scale voltage of the sub-pixel in the 1 st row is 7.8V and the target gray scale voltage of the sub-pixel in the 2 nd row is 8V, the adjustment value of the sub-pixel in the 2 nd row should be-0.2 x 10^-1μ S. When the preset scan time of the sub-pixel in row 2 is t02, the row scan time of the sub-pixel in row 2 is t12 ═ t02-0.2 × 10^-1μS。

When the actual gray scale voltage of the sub-pixel in the 2 nd row is 7.9V and the target gray scale voltage of the sub-pixel in the 3 rd row is-8V, the adjustment value of the sub-pixel in the 3 rd row is +0.4 x 10^-1μ S. When the preset scan time of the sub-pixel in row 3 is t03, the row scan time of the sub-pixel in row 3 is t13 ═ t03+0.4 × 10^-1μS。

S140, the computer device 10 scans the next row of sub-pixels according to the row scanning time of the next row of sub-pixels, and inputs the target gray scale voltage of the next row of sub-pixels to the next row of sub-pixels.

After obtaining the line scanning time of the next row of sub-pixels, the computer device 10 scans the next row of sub-pixels according to the line scanning time, and simultaneously, may input the target gray scale voltage thereto. After obtaining the row scanning time t12 of the sub-pixels in row 2, the computer device 10 scans the sub-pixels in row 2 according to the row scanning time t12 of the sub-pixels in row 2, and inputs the target gray scale voltage of the sub-pixels in row 2 to the sub-pixels in row 2; after the line scanning time t12 of the sub-pixels in the 3 rd row is obtained, the sub-pixels in the 3 rd row are scanned according to the line scanning time t13 of the sub-pixels in the 3 rd row, the target gray scale voltage … … of the sub-pixels in the 3 rd row is input to the sub-pixels in the 3 rd row to obtain the line scanning time t1N of the sub-pixels in the N th row, the sub-pixels in the N th row are scanned according to the line scanning time t1N of the sub-pixels in the N th row, and the target gray scale voltage of the sub-pixels in the N th row is input to the sub-pixels in the N th row.

In some embodiments, the "scanning the next row of sub-pixels according to the row scanning time of the next row of sub-pixels" in the step S140 may include the following steps S142 and S144.

S142, the computer device 10 takes the sum of the precharge time t0 and the row scanning time of the following row of sub-pixels as the actual scanning time of the following row of sub-pixels.

S144, the computer device 10 scans the next row of sub-pixels within the actual scanning time of the next row of sub-pixels.

As is known from the foregoing description, the precharge time t0 is a preset, fixed time parameter. For the next row of sub-pixels in any two adjacent rows of sub-pixels, the row scanning time thereof is obtained in step S130. The computer device 10 takes the sum of the precharge time t0 and the row scanning time of the following row of sub-pixels as the actual scanning time of the following row of sub-pixels. The actual scan time for the next row of sub-pixels refers to the length of time it takes computer device 10 to actually scan the next row of sub-pixels. During the actual scanning time of the next row of sub-pixels, the computer device 10 may apply the scanning signal to the scanning line corresponding to the next row of sub-pixels, so that the scanning line corresponding to the next row of sub-pixels may output the scanning signal to scan the next row of sub-pixels.

In some embodiments, step S142 may be performed by the level conversion unit 104 in the computer device 10, and step S144 may be performed by the scanning unit 106 in the computer device 10.

In some embodiments, before step S1302, the following step S152 may be further included: the computer device 10 stores the actual gray scale voltage of the previous row of sub-pixels and establishes a preset correspondence relationship according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels. The preset corresponding relation is the corresponding relation between the actual gray scale voltage, the target gray scale voltage and the adjustment value, and when the voltage difference between the actual gray scale voltage and the corresponding target gray scale voltage in the preset corresponding relation is greater than or equal to the voltage threshold value, the corresponding adjustment value is a positive value.

The preset corresponding relation in the display panel driving method can be preset, or can be calculated and set according to the actual gray scale voltage of the sub-pixels in the previous row. When the preset corresponding relationship needs to be calculated according to the actual gray scale voltage of the previous row of sub-pixels, the computer device 10 stores the actual gray scale voltage of the previous row of sub-pixels after acquiring the actual gray scale voltage of the previous row of sub-pixels in step S120, and establishes the preset corresponding relationship according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels. The rule for establishing the preset corresponding relationship may be as shown in the foregoing tables 1 to 3, and is not described again.

Next, a method for driving a display panel according to an embodiment of the present application will be explained with reference to fig. 5. The display panel driving method is used for driving the display panel 20, and comprises the following steps:

s1, the timing control chip 102 obtains image data including the target gray scale voltage of each row of sub-pixels. S2, the timing control chip 102 generates a clock signal M1, wherein the clock signal M1 includes the preset scanning time of each row of sub-pixels. The structure of the frequency signal M1 can be as shown in fig. 5, wherein the preset scanning time t01, t02, t03 … … t0N of each row of sub-pixels are equal. S3, the timing control chip 102 obtains the stored precharge time t 0.

S4, the timing control chip 102 outputs the pre-charge time t0 and the preset scan time t01 of the sub-pixels of the row 1 to the level shifter 104. S5, the level shifter 104 takes the sum of the precharge time t0 and the preset scan time t01 of the sub-pixel of the 1 st row as the actual scan time t1 of the sub-pixel of the 1 st row, i.e., t 1-t 0+ t 11-t 0+ t01, and outputs the actual scan time t1 of the sub-pixel of the 1 st row to the scan unit 106. At S6, during the actual scanning time t1 of the sub-pixels in the 1 st row being t0+ t01, the scanning unit 106 scans the sub-pixels in the 1 st row, and the driving unit 108 inputs the target gray-scale voltage of 8V to the sub-pixels in the 1 st row. S7, the scanning unit 106 scans the sub-pixels in the 1 st row, and the timing control chip 102 detects the actual gray scale voltage of the sub-pixels in the 1 st row, so as to obtain the actual gray scale voltage of the sub-pixels in the 1 st row of 7.8V.

S8, the timing control chip 102 obtains the adjustment value of-0.2 x 10 from Table 1 according to the actual gray scale voltage (7.8V) of the sub-pixel in the row 1 and the target gray scale voltage (8V) of the sub-pixel in the row 2^-1μ S. S9, the timing control chip 102 determines the sum of the adjustment value and the preset scan time t02 of the sub-pixel in the 2 nd row as the row scan time t12 of the sub-pixel in the 2 nd row, i.e. t12 is t02-0.2 × 10^-1μS。

S10, the timing control chip 102 outputs the pre-charge time t0 and the second timeThe row scanning time t12 of the sub-pixels of 2 rows is output to the level conversion unit 104. S11, the level shifter 104 takes the sum of the precharge time t0 and the line scan time t1N of the sub-pixel in the 2 nd row as the actual scan time t2 of the sub-pixel in the 2 nd row, i.e., t2 ═ t0+ t12 ═ t0+ t02-0.2 ×. 10^-1μ S, and outputs the actual scanning time t2 of the sub-pixels of the 2 nd row to the scanning unit 106. S12, during the time scanning period of the sub-pixels in row 2, the scanning unit 106 scans the sub-pixels in row 2, and the driving unit 108 inputs the target gray-scale voltage of 8V to the sub-pixels in row 2. S13, the scanning unit 106 scans the sub-pixels in row 2, and the timing control chip 102 detects the actual gray scale voltage of the sub-pixels in row 2, so as to obtain the actual gray scale voltage of the sub-pixels in row 2 as 7.9V.

S14, the timing control chip 102 obtains the adjustment value of +0.4 x 10 from Table 1 according to the actual gray scale voltage (7.9V) of the sub-pixel in the row 2 and the target gray scale voltage (-8V) of the sub-pixel in the row 3^-1μ S. S15, the timing control chip 102 determines the sum of the adjustment value and the preset scan time t03 of the 3 rd row of sub-pixels as the row scan time t13 of the 3 rd row of sub-pixels, i.e. t13 equals t03+0.4 × 10^-1μS。

S16, the timing control chip 102 outputs the pre-charge time t0 and the row scan time t13 of the 3 rd row of sub-pixels to the level shifter 104. S17, the level shifter 104 takes the sum of the precharge time t0 and the line scan time t13 of the 3 rd row sub-pixel as the actual scan time t3 of the 3 rd row sub-pixel, i.e. t 3-t 0+ t 13-t 0+ t03+ 0.4-10^-1μ S, and outputs the actual scanning time t3 of the sub-pixels of the 3 rd row to the scanning unit 106. S18, during the time scanning time of the sub-pixels in the 3 rd row, the scanning unit 106 scans the sub-pixels in the 3 rd row, and the driving unit 108 inputs-8V target gray scale voltage to the sub-pixels in the 3 rd row. S19, the scanning unit 106 scans the 3 rd row of sub-pixels, the timing control chip 102 detects the actual gray scale voltage of the 3 rd row of sub-pixels, and the actual gray scale voltage of the 3 rd row of sub-pixels is-8V … …

In the embodiment of the present application, the sub-pixels in the row 1 are scanned according to the preset scanning time of the sub-pixels in the row 1, and the target gray scale voltage of the sub-pixels in the row 1 is input. Then, for any two adjacent rows of sub-pixels in the N rows of sub-pixels, if the previous row of sub-pixels is being scanned, the actual gray scale voltage of the previous row of sub-pixels is obtained, that is, the actual gray scale voltage of the row of sub-pixels is obtained every time the previous row of sub-pixels is scanned. If the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is larger than or equal to the voltage threshold value, namely the change of the gray scale voltage is larger, setting the row scanning time of the next row of sub-pixels to be larger than the preset scanning time; if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is smaller than the voltage threshold and larger than zero, namely the change of the gray scale voltage is small, setting the scanning time of the next row of sub-pixels to be smaller than the preset scanning time; if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is equal to zero, that is, the gray scale voltage is unchanged, the scanning time of the next row of sub-pixels is set to be equal to the preset scanning time, so that when the next row of sub-pixels is scanned according to the row scanning time of the next row of sub-pixels and the target gray scale voltage is input to the next row of sub-pixels, the charging amount of the sub-pixels can be increased, the charging amount of the sub-pixels is closer to the charging amount required by the sub-pixels to emit light, and the display effect of the display panel 20 is further improved.

Example two:

fig. 6 is a schematic structural diagram of a display panel driving apparatus 60 according to an embodiment of the present disclosure. The device 60 is used to drive a display panel. The display panel has N rows of sub-pixels, and the scanning sequence of the N rows of sub-pixels is from the 1 st row of sub-pixels to the Nth row of sub-pixels. The display panel driving device 60 includes: a scanning module 601, an acquisition module 602, and a setting module 603.

The scanning module 601 is configured to scan the sub-pixels in the 1 st row according to the preset scanning time of the sub-pixels in the 1 st row, and input the target gray scale voltage of the sub-pixels in the 1 st row to the sub-pixels in the 1 st row.

The obtaining module 602 is configured to, for any two adjacent rows of sub-pixels in the N rows of sub-pixels, obtain an actual gray scale voltage of a previous row of sub-pixels if the previous row of sub-pixels in the two rows of sub-pixels is being scanned.

The setting module 603 is configured to set the line scanning time of the next row of sub-pixels to be longer than the preset scanning time of the next row of sub-pixels if a voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels in the two rows of sub-pixels is greater than or equal to a voltage threshold.

The scanning module 601 is further configured to scan a next row of sub-pixels according to the row scanning time of the next row of sub-pixels, and input the target gray scale voltage of the next row of sub-pixels to the next row of sub-pixels.

Optionally, the setting module 603 is further configured to set the line scanning time of the next row of sub-pixels to be less than the preset scanning time of the next row of sub-pixels if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is less than the voltage threshold and greater than zero.

Optionally, the setting module 603 is further configured to set the line scanning time of the next row of sub-pixels to be equal to the preset scanning time of the next row of sub-pixels if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is equal to zero.

Optionally, as shown in fig. 7, the display panel driving apparatus 60 may further include a detecting module 604, where the detecting module 604 is configured to: storing the actual gray scale voltage of the previous row of sub-pixels, establishing a preset corresponding relation according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, wherein the preset corresponding relation is the corresponding relation among the actual gray scale voltage, the target gray scale voltage and an adjustment value, and when the voltage difference between the actual gray scale voltage and the corresponding target gray scale voltage in the preset corresponding relation is greater than or equal to a voltage threshold value, the corresponding adjustment value is a positive value.

Optionally, the setting module 603 is configured to obtain a corresponding adjustment value from a preset corresponding relationship according to the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels, where the preset corresponding relationship is a corresponding relationship between the actual gray scale voltage, the target gray scale voltage, and the adjustment value, and when a voltage difference between the actual gray scale voltage and the corresponding target gray scale voltage in the preset corresponding relationship is greater than or equal to a voltage threshold, the corresponding adjustment value is a positive value; and taking the sum of the preset scanning time of the sub-pixel of the next row and the obtained adjustment value as the row scanning time of the sub-pixel of the next row.

Optionally, the scanning module 601 is configured to use the sum of the pre-charging time and the line scanning time of the next row of sub-pixels as the actual scanning time of the next row of sub-pixels; and scanning the sub-pixels of the next row in the actual scanning time of the sub-pixels of the next row.

In the embodiment of the present application, the display panel driving device 60 scans the sub-pixels in the 1 st row according to the preset scanning time of the sub-pixels in the 1 st row, and inputs the target gray scale voltage to the sub-pixels in the 1 st row. Then, for any two adjacent rows of sub-pixels in the N rows of sub-pixels, if the previous row of sub-pixels is being scanned, the actual gray scale voltage of the previous row of sub-pixels is obtained, that is, the actual gray scale voltage of the row of sub-pixels is obtained every time the previous row of sub-pixels is scanned. If the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is larger than or equal to the voltage threshold value, namely the change of the gray scale voltage is larger, setting the row scanning time of the next row of sub-pixels to be larger than the preset scanning time; if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is smaller than the voltage threshold and larger than zero, namely the change of the gray scale voltage is small, setting the scanning time of the next row of sub-pixels to be smaller than the preset scanning time; if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is equal to zero, that is, the gray scale voltage is unchanged, the scanning time of the next row of sub-pixels is set to be equal to the preset scanning time, so that when the next row of sub-pixels are scanned according to the row scanning time of the next row of sub-pixels and the target gray scale voltage is input to the next row of sub-pixels, the charging amount of the sub-pixels can be increased, the charging amount of the sub-pixels is closer to the charging amount required by the sub-pixels to emit light, and the display effect of the display panel is further improved.

It should be noted that: the display panel driving apparatus 60 provided in the above embodiment is only illustrated by dividing the functional modules when driving the display panel, and in practical applications, the above functions may be distributed by different functional modules according to needs, that is, the internal structure of the apparatus may be divided into different functional modules to complete all or part of the above described functions.

Each functional unit and module in the above embodiments may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used to limit the protection scope of the embodiments of the present application.

The display panel driving apparatus 60 provided in the above embodiment and the display panel driving method embodiment belong to the same concept, and for specific working processes of units and modules and technical effects brought by the working processes in the above embodiments, reference may be made to the method embodiment section, and details are not described here.

Example three:

fig. 8 is a schematic structural diagram of a computer device according to an embodiment of the present application. As shown in fig. 8, the computer device 80 includes: a processor 801, a memory 802, and a computer program 803 stored in the memory 802 and operable on the processor 801, the steps in the display panel driving method in the above-described embodiments being implemented when the computer program 803 is executed by the processor 801.

The computer device 80 may be a general purpose computer device or a special purpose computer device. In a specific implementation, the computer device 80 may be a desktop computer, a laptop computer, a network server, a palmtop computer, a mobile phone, a tablet computer, a wireless terminal device, a communication device, or an embedded device, and the embodiment of the present application does not limit the type of the computer device 80. Those skilled in the art will appreciate that fig. 8 is merely an example of the computer device 80 and is not intended to limit the computer device 80 and may include more or less components than those shown, or some components may be combined, or different components may be included, such as input output devices, network access devices, etc.

The Processor 801 may be a Central Processing Unit (CPU), and the Processor 801 may also be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or any conventional processor.

The memory 802 may be an internal storage unit of the computer device 80 in some embodiments, such as a hard disk or a memory of the computer device 80. The memory 802 may also be an external storage device of the computer device 80 in other embodiments, such as a plug-in hard disk provided on the computer device 80, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and so forth. Further, the memory 802 may also include both internal storage units of the computer device 80 and external storage devices. The memory 802 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of a computer program. The memory 802 may also be used to temporarily store data that has been output or is to be output.

An embodiment of the present application further provides a computer device, where the computer device includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, the processor implementing the steps of any of the various method embodiments described above when executing the computer program.

The embodiments of the present application also provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

The embodiments of the present application provide a computer program product, which when run on a computer causes the computer to perform the steps of the above-described method embodiments.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the above method embodiments may be implemented by a computer program, which may be stored in a computer readable storage medium and used by a processor to implement the steps of the above method embodiments. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or apparatus capable of carrying computer program code to a photographing apparatus/terminal device, a recording medium, computer Memory, ROM (Read-Only Memory), RAM (Random Access Memory), CD-ROM (Compact Disc Read-Only Memory), magnetic tape, floppy disk, optical data storage device, etc. The computer-readable storage medium referred to herein may be a non-volatile storage medium, in other words, a non-transitory storage medium.

It should be understood that all or part of the steps for implementing the above embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The computer instructions may be stored in the computer-readable storage medium described above.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus/computer device and method may be implemented in other ways. For example, the above-described apparatus/computer device embodiments are merely illustrative, and for example, a module or a unit may be divided into only one logical function, and may be implemented in other ways, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A display panel driving method for driving a display panel, the display panel having N rows of sub-pixels, the N rows of sub-pixels being scanned from a 1 st row of sub-pixels to an N th row of sub-pixels, the method comprising:

2. The method of claim 1, wherein after obtaining the actual gray scale voltage for the previous row of subpixels, further comprising:

3. The method of claim 1, wherein after obtaining the actual gray scale voltage for the previous row of subpixels, further comprising:

4. The method of claim 1, wherein if a voltage difference between an actual gray scale voltage of the previous row of sub-pixels and a target gray scale voltage of a next row of sub-pixels in the two rows of sub-pixels is greater than a voltage threshold, setting a row scan time of the next row of sub-pixels to be greater than a preset scan time of the next row of sub-pixels comprises:

5. The method of any of claims 1-4, wherein said scanning the next row of sub-pixels based on the row scan time of the next row of sub-pixels comprises:

6. A display panel driving apparatus for driving a display panel, the display panel having N rows of sub-pixels, the N rows of sub-pixels being scanned from a 1 st row of sub-pixels to an N th row of sub-pixels, the apparatus comprising:

7. The apparatus of claim 6, wherein the setting module is further configured to set the row scanning time of the next row of sub-pixels to be less than the preset scanning time of the next row of sub-pixels if a voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is less than the voltage threshold and greater than zero.

8. The apparatus of claim 6, wherein the setting module is further configured to set the line scan time of the next row of sub-pixels to be equal to the preset scan time of the next row of sub-pixels if the voltage difference between the actual gray scale voltage of the previous row of sub-pixels and the target gray scale voltage of the next row of sub-pixels is equal to zero.

9. The apparatus of claim 6, wherein the apparatus further comprises: a detection module;

10. A computer device, characterized in that the computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, which computer program, when executed by the processor, implements the method according to any one of claims 1 to 5.