CN110728953B - Gray scale voltage correction method, driving method, correction system and storage medium - Google Patents
Gray scale voltage correction method, driving method, correction system and storage medium Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3258—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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Abstract
The invention provides a gray scale voltage correction method of a display device, which comprises the step of independently obtaining gray scale voltage correction parameters of each sub-display area of the display device, wherein for any sub-display area, the step of obtaining the gray scale voltage correction parameters comprises the following steps: adjusting gray scale voltage signals provided for the sub-display areas in response to the acquired display information of the sub-display areas so that the acquired display information of the sub-display areas meets a preset display standard; and obtaining gray scale voltage correction parameters corresponding to the sub-display areas according to gray scale voltage signals provided for the sub-display areas when the display information meets the preset requirements. In the invention, the source electrode driving circuit corresponding to each sub-display area can drive the sub-display areas according to the independent gray scale voltage correction parameters of the sub-display areas, so that the brightness of the whole display surface of the display device is more uniform. The invention also provides a driving method of the display device, a correction system and a storage medium.
Description
Technical Field
The present invention relates to the field of display devices, and in particular, to a gray scale voltage correction method of a display device, a driving method of a display device, a gray scale voltage correction system of a display device, and a storage medium.
Background
In order to ensure uniformity of screen brightness in an Organic Light Emitting Diode (OLED) display device and improve display effect, Gamma correction (Gamma rounding) is usually required to a voltage of a source driving circuit in the display device. However, when the existing gamma correction method is applied to a large-screen display device, the problem of large display brightness difference (i.e. split screen) between different display areas after correction usually occurs, which affects the display effect.
Therefore, how to provide a gamma correction method suitable for a large-screen display device becomes a technical problem to be solved in the field.
Disclosure of Invention
The present invention is directed to a gray scale voltage correction method of a display device, a driving method of a display device, a gray scale voltage correction system of a display device, and a storage medium, the gray scale voltage correction method being particularly suitable for a large screen display device.
To achieve the above object, according to one aspect of the present invention, there is provided a gray scale voltage correction method for a display device, the display surface of the display device including a plurality of sub-display regions, the gray scale voltage correction method including the step of independently obtaining a gray scale voltage correction parameter for each of the sub-display regions, wherein the step of obtaining the gray scale voltage correction parameter for any one of the sub-display regions includes:
adjusting gray scale voltage signals provided for a plurality of pixel units of the sub-display area in response to the acquired display information of the sub-display area, so that the acquired display information of the sub-display area conforms to a preset display standard;
and obtaining gray scale voltage correction parameters corresponding to the sub-display areas according to gray scale voltage signals provided for the plurality of pixel units of the sub-display areas when the display information of the sub-display areas meets the preset display standard.
Optionally, the preset display standard includes a standard color and a standard brightness range of the sub-display area.
Optionally, the display information includes a color and a brightness value actually displayed by the sub-display area.
Optionally, the step of adjusting gray scale voltage signals provided to the plurality of pixel units of the sub-display area in response to the collected display information of the sub-display area so that the collected display information of the sub-display area meets a preset display standard includes:
adjusting gray scale voltage signals provided for a plurality of pixel units of the sub-display area;
receiving the acquired display information of the sub-display area, and judging whether the display information meets a preset display standard;
and if the display information does not accord with the preset display standard, executing the step of adjusting the gray scale voltage signal and the step of receiving and judging the display information again until the display information accords with the preset display standard.
Optionally, the display device includes a plurality of source driving circuits corresponding to the sub-display regions one to one, and each source driving circuit is configured to provide a gray scale voltage signal to a plurality of pixel units of the corresponding sub-display region.
Optionally, the grayscale voltage correction method further includes:
writing the gray scale voltage correction parameter of each sub-display area into the source electrode driving circuit corresponding to the sub-display area; the source electrode driving circuit is used for providing correction gray scale voltage for a plurality of pixel units of the corresponding sub display area according to the gray scale voltage correction parameters stored in the source electrode driving circuit.
Optionally, the source driving circuit includes a driving chip.
As a second aspect of the present invention, there is provided a driving method of a display device whose display surface includes a plurality of sub-display sections, the driving method including:
obtaining gray scale voltage correction parameters of each sub-display area according to the gray scale voltage correction method;
and for each sub-display area, providing a correction gray scale voltage for each pixel unit according to the corresponding gray scale voltage correction parameter and the gray scale voltage to be displayed corresponding to each pixel unit.
As a third aspect of the present invention, there is provided a gray scale voltage correction system of a display device, a display surface of the display device including a plurality of sub-display regions, the correction system including a correction unit and a plurality of acquisition units:
the plurality of acquisition units correspond to the plurality of sub-display areas one by one, and each acquisition unit is used for acquiring the display information of the corresponding sub-display area and sending the display information to the correction unit;
the correction unit is used for obtaining the gray scale voltage correction parameters of each sub-display area according to the gray scale voltage correction method.
As a fourth aspect of the present invention, there is provided a storage medium having a gradation voltage correction program stored therein, capable of executing the gradation voltage correction method described above when the gradation voltage correction program stored in the storage medium is run.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram illustrating a principle of correcting a display device in the related art;
FIG. 2 is a schematic flow chart illustrating a gray scale voltage calibration method according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a gray-scale voltage calibration method according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of a partial structure of a calibration system according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a related art writing gray scale correction parameters to a source driver circuit;
FIG. 6 is a diagram illustrating writing gray scale correction parameters to a source driver circuit according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a driving method of a display device according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, in the related art, a method of gamma correction for a display device generally includes: the screen of the display device is lighted under a certain debugging point gray scale, display information (such as brightness and color) of the screen is collected by a collecting unit 10, then, the voltages of red, green and blue (RGB) sub-pixels are matched and debugged in real time, and optical parameters displayed by the screen are changed until the brightness and the color of each pixel unit on the screen reach the range of a preset display standard (Spec). According to the voltage Vdata of the red, green and blue sub-pixels of which the screen meets the preset display standard, determining the gray scale voltage correction parameter of the debugging point gray scale, writing the gray scale voltage correction parameter into a register of a source electrode driving Circuit (the process is called Gamma write), and finally writing the corresponding gray scale voltage correction parameter into the register of the source electrode driving Circuit through a Flexible Printed Circuit (FPC) when the display device is used for normally displaying the picture of the debugging point gray scale (the process is called OTP write), so that the source electrode driving Circuit provides the corrected gray scale voltage for each pixel according to the gray scale voltage correction parameter, and further the display quality is improved.
Obviously, under the same gray scale, the sub-pixels of different colors may have different gray scale voltage correction parameters; under different gray scales, the sub-pixels of the same color have different gray scale voltage correction parameters. Therefore, a part of the selected gray scales are debugging point gray scales (or called binding point gray scales), the gray scale voltage correction parameters of the corresponding color sub-pixels are measured, and the gray scale voltage correction parameters of the sub-pixels of the other color under the other gray scales are obtained by calculating the gray scale voltage correction parameters of the auxiliary point gray scales.
However, the inventor of the present invention has found that when the display device is a large-sized display device and a plurality of source driving circuits are required to provide gray-scale voltages to respective regions of a screen, a phenomenon that a significant luminance difference occurs between display regions corresponding to different source driving circuits is very likely to occur. For example, as shown in fig. 1, when the display device is a dual source driving circuit display device, the display surface of the display device includes a first sub-display region a1 and a second sub-display region a2, and the first sub-display region a1 and the second sub-display region a2 are driven by a first source driving circuit IC1 and a second source driving circuit IC2, respectively. In the gamma correction process, after performing matching debugging on the voltages of the three-color sub-pixels of red, green and blue (RGB) on the whole screen, the obtained same set of gray scale voltage correction parameters are written into the register of the first source driving circuit IC1 and the register of the second source driving circuit IC2 at the same time. That is, in actual display, the first source driver IC1 and the second source driver IC2 theoretically generate the same corrected gray scale voltage (voltage of RGB three-color pixels) according to the same gray scale voltage correction parameter, however, when theoretically outputting the same voltage, due to the difference of the source driver circuit properties, the voltage (source voltage) actually output by two different source driver circuits often has a difference, so that the luminance difference between the first sub-display area a1 and the second sub-display area a2 is large (split screen phenomenon) during display of the whole display device, and the display effect is affected.
In order to solve the above technical problem, according to an aspect of the present invention, there is provided a gray scale voltage correction method for a display device, the display surface of the display device includes a plurality of sub-display regions, the gray scale voltage correction method includes a step of independently obtaining a gray scale voltage correction parameter for each of the sub-display regions, wherein, as shown in fig. 2, the step of obtaining the gray scale voltage correction parameter for any one of the sub-display regions includes:
s1, responding to the collected display information of the sub-display area, and adjusting gray scale voltage signals provided for a plurality of pixel units of the sub-display area to enable the collected display information of the sub-display area to accord with a preset display standard;
s2, obtaining the gray scale voltage correction parameters corresponding to the sub-display area according to the gray scale voltage signals provided by the display information of the sub-display area to the plurality of pixel units of the sub-display area according to the preset display standard.
According to the gray scale voltage correction method provided by the invention, the gray scale voltage signal of each sub-display area is independently adjusted according to the independently acquired display information of each sub-display area, so that the display information of each sub-display area is independently adjusted to meet the preset display standard, and the independent gray scale voltage correction parameter of each sub-display area is obtained. When the gray scale voltage correction parameters corresponding to each sub-display area are used for independently driving each sub-display area, the gray scale voltage of each sub-display area can reach the standard value under the adjustment of the respective gray scale voltage correction parameters, so that the display brightness of the whole display device is more uniform, and the display effect of the display device is improved.
The number of source driving circuits of the display device is not particularly limited in the embodiments of the present invention. For example, optionally, the display device comprises: and the source electrode driving circuits are in one-to-one correspondence with the sub display areas, and each source electrode driving circuit is used for providing gray scale voltage signals for a plurality of pixel units of the corresponding sub display area.
In an embodiment of the present invention, the method may further include, after obtaining the grayscale voltage correction parameter:
s3, writing the gray scale voltage correction parameters of each sub-display area into the source driving circuit corresponding to the sub-display area. The source electrode driving circuit is used for providing correction gray scale voltage for a plurality of pixel units of the corresponding sub display area according to the gray scale voltage correction parameters stored in the source electrode driving circuit.
Further, the source driving Circuit may include a driving Chip (IC) for providing the gray scale voltage signal to the corresponding sub display region, a register for storing a gray scale voltage correction parameter, and a flexible Circuit board for transmitting information between the driving Chip and the register.
As shown in fig. 4, when the display device is a dual-source driving circuit display device and the gamma correction is performed by using the gray scale voltage correction method provided by the present invention, two acquisition units 10 are required to respectively acquire the display information of the first sub-display area a1 and the second sub-display area a2 in real time, and respectively adjust the gray scale voltages of the first sub-display area a1 and the second sub-display area a2, and when the display information of the first sub-display area a1 and the display information of the second sub-display area a2 both reach the preset display standard, respectively write the gray scale voltage correction parameter of the first sub-display area a1 and the gray scale voltage correction parameter of the second sub-display area a2 into the registers of the source driving circuits corresponding to the two sub-display areas, thereby implementing independent gamma correction on the two sub-display areas.
Fig. 5 is a schematic diagram illustrating writing of gray scale voltage correction parameters into registers of a first source driver IC1 and a second source driver IC2 in a dual source driver circuit display device according to the related art. In the related art, the registers of the first source driver IC1 and the second source driver IC2 are written with the same parameter values row by row (from row [0] to row [ n-1 ]) until All the pixels in the row n R, G, B are written (All Band), and at this time, the first source driver IC1 and the second source driver IC2 are written with the same gray scale voltage correction parameters (i.e., the gray scale voltage correction parameters corresponding to the whole display surface). However, in the case where there is a difference between the source voltages output from the first source driving circuit IC1 and the second source driving circuit IC2, a significant difference in luminance between the sub-display regions respectively driven by the two source driving circuits occurs, so that the entire display device exhibits a screen-splitting phenomenon.
In the solution provided by the embodiment of the present invention, as shown in fig. 6, registers of the source driving circuits (the first source driving circuit IC1 and the second source driving circuit IC2) of each sub-display area are respectively written into the gray scale voltage correction parameters corresponding to each sub-display area, so that each sub-display area respectively achieves the standard display effect, the display brightness of the whole display device is more uniform, and the display effect of the display device is improved.
The embodiment of the invention does not limit the preset display standard and the specific content of the display information in detail. For example, optionally, the preset display criteria include a standard color and a standard brightness range of the sub-display area. Accordingly, the display information includes the color and brightness value actually displayed by the sub-display area.
Further, the predetermined display criteria may include a range of CIE spectral tristimulus values (generally R, G, B) of the luminance and CIE spectrum of each pixel unit, which may be determined according to the gamma curve, corresponding to the luminance and color of the displayed pattern at each gray level.
In an embodiment of the present invention, each pixel unit includes sub-pixels of 3 colors of red (R), green (G), and blue (B), accordingly, the gray scale voltage correction parameters of each sub-display area can also be divided into 3 groups of correction parameters according to R, G, B sub-pixels, and the correction parameters of each color can respectively correspond to all gray scales (for example, 256 gray scales) of the color, or the correction parameters can be written only for part of the tie-point gray scales.
Optionally, as shown in fig. 3, the step S1 of adjusting gray scale voltage signals provided to the plurality of pixel units of the sub-display area in response to the collected display information of the sub-display area, so that the collected display information of the sub-display area meets a preset display standard, includes:
s11, adjusting gray scale voltage signals provided for the plurality of pixel units of the sub display area;
s12, receiving the acquired display information of the sub-display area, and judging whether the display information meets a preset display standard;
and S13, if the display information does not accord with the preset display standard, executing the step S11 and the step S12 again until the display information accords with the preset display standard.
As a second aspect of the present invention, there is provided a driving method of a display device whose display surface includes a plurality of sub-display regions, as shown in fig. 7, the driving method including:
s01, obtaining the gray scale voltage correction parameters of each sub-display area according to the gray scale voltage correction method in the previous embodiment;
s02, for each sub-display area, according to the corresponding gray scale voltage correction parameter and the gray scale voltage to be displayed corresponding to each pixel unit, providing the correction gray scale voltage for each pixel unit.
In the driving method provided by the embodiment of the invention, the gray scale voltage to be displayed (namely, the original gray scale voltage corresponding to the gray scale to be displayed) of each sub-display region is independently adjusted according to the gray scale voltage correction parameter obtained by independently performing gamma correction on each sub-display region, so that the adjusted corrected gray scale voltage is obtained, and the source driving circuit corresponding to the sub-display region can drive the sub-display regions according to the independently corrected gray scale voltage of the sub-display regions, so that each sub-display region achieves the standard display effect, thereby the display brightness of the whole display device is more uniform, and the display effect of the display device is improved.
As a third aspect of the present invention, there is provided a gray scale voltage correction system of a display device, as shown in fig. 4, the correction system includes a correction unit (not shown) and a plurality of collecting units 10, the plurality of collecting units 10 correspond to a plurality of sub-display regions (e.g., a first sub-display region a1 and a second sub-display region a2) of the display device one by one, each collecting unit 10 is configured to collect display information of the corresponding sub-display region and send the display information to the correction unit; the correction unit is used for obtaining the gray scale voltage correction parameters of each sub-display area according to the gray scale voltage correction method in the previous embodiment.
In the gray scale voltage correction system provided by the invention, the correction unit can independently adjust the gray scale voltage signal of each sub-display area according to the display information of each sub-display area (for example, the first sub-display area a1 and the second sub-display area a2) independently acquired by each acquisition unit 10, so that the display information of each sub-display area respectively reaches a preset display standard range, and thus the gray scale voltage correction parameters corresponding to a plurality of pixel units of each sub-display area are obtained. The display device comprises a plurality of source driving circuits (such as a first source driving circuit IC1 and a second source driving circuit IC2) for respectively driving each sub-display area to display, wherein the source driving circuit corresponding to each sub-display area independently drives each sub-display area according to the corrected gray scale voltage of each sub-display area, so that each sub-display area respectively achieves the standard display effect, the display brightness of the whole display device is more uniform, and the display effect of the display device is improved.
In order to ensure that the sub-display regions of the display device are synchronized, the source driving circuits preferably simultaneously and respectively supply gray scale voltage signals to the pixel units in the sub-display regions.
The setting position of the acquisition unit is not particularly limited in the embodiment of the present invention, for example, optionally, each sub-display area includes a central region (as shown in fig. 4, the first sub-display area a1 includes a first central region a01, and the second sub-display area a2 includes a second central region a02), and an edge region surrounding the central region, and each acquisition unit is set corresponding to the central region of the sub-display area corresponding to the acquisition unit.
As a fourth aspect of the present invention, there is provided a storage medium having a gradation voltage correction program stored therein, capable of executing the gradation voltage correction method described in the foregoing embodiments when the gradation voltage correction program stored in the storage medium is run.
The present invention has been described in detail above for the effect that can be achieved by the gray scale voltage correction method, and is not described herein again.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A gray scale voltage correction method of a display device, the display surface of the display device comprises a plurality of sub-display areas, the gray scale voltage correction method is characterized in that the gray scale voltage correction method comprises a step of independently obtaining gray scale voltage correction parameters of each sub-display area in a debugging stage, wherein the step of obtaining the gray scale voltage correction parameters comprises the following steps of:
s1: adjusting gray scale voltage signals provided for a plurality of pixel units of the sub-display area in response to the acquired display information of the sub-display area, so that the acquired display information of the sub-display area conforms to a preset display standard; the step S1 includes:
adjusting gray scale voltage signals provided for a plurality of pixel units of the sub-display area;
receiving the acquired display information of the sub-display area, and judging whether the display information meets a preset display standard;
if the display information does not accord with the preset display standard, executing the step of adjusting the gray scale voltage signal and the step of receiving and judging the display information again until the display information accords with the preset display standard;
s2: and obtaining gray scale voltage correction parameters corresponding to the sub-display areas according to gray scale voltage signals provided for the plurality of pixel units of the sub-display areas when the display information of the sub-display areas meets the preset display standard.
2. The gray-scale voltage correction method of claim 1, wherein said predetermined display criteria include a standard color and a standard brightness range of said sub-display region.
3. The gray-scale voltage correction method according to claim 1, wherein said display information includes colors and luminance values actually displayed by said sub-display section.
4. The method according to any one of claims 1 to 3, wherein the display device comprises a plurality of source driver circuits in one-to-one correspondence with the sub-display regions, each source driver circuit being configured to provide a gray scale voltage signal to a plurality of pixel cells of the corresponding sub-display region.
5. The gray-scale voltage correction method according to claim 4, further comprising:
writing the gray scale voltage correction parameter of each sub-display area into the source electrode driving circuit corresponding to the sub-display area; the source electrode driving circuit is used for providing correction gray scale voltage for a plurality of pixel units of the corresponding sub display area according to the gray scale voltage correction parameters stored in the source electrode driving circuit.
6. The gray-scale voltage correction method according to claim 4, wherein said source driver circuit comprises a driver chip.
7. A driving method of a display device, a display surface of the display device including a plurality of sub-display regions, the driving method comprising:
the gray scale voltage correction method according to any one of claims 1 to 6, obtaining a gray scale voltage correction parameter for each of the sub-display regions;
and for each sub-display area, providing a correction gray scale voltage for each pixel unit according to the corresponding gray scale voltage correction parameter and the gray scale voltage to be displayed corresponding to each pixel unit.
8. A gray scale voltage correction system of a display device, the display surface of the display device comprises a plurality of sub-display areas, and the correction system is characterized by comprising a correction unit and a plurality of acquisition units:
the plurality of acquisition units correspond to the plurality of sub-display areas one by one, and each acquisition unit is used for acquiring the display information of the corresponding sub-display area and sending the display information to the correction unit;
the correction unit is used for obtaining the gray scale voltage correction parameter of each sub-display area according to the gray scale voltage correction method of any one of claims 1 to 6.
9. A storage medium in which a gradation voltage correction program is stored, characterized in that the gradation voltage correction method according to any one of claims 1 to 6 can be executed when the gradation voltage correction program stored in the storage medium is executed.
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