CN109147702B - Chromaticity adjusting method and device of display panel - Google Patents
Chromaticity adjusting method and device of display panel Download PDFInfo
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- CN109147702B CN109147702B CN201811115250.4A CN201811115250A CN109147702B CN 109147702 B CN109147702 B CN 109147702B CN 201811115250 A CN201811115250 A CN 201811115250A CN 109147702 B CN109147702 B CN 109147702B
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
Abstract
The invention discloses a chromaticity adjusting method and a chromaticity adjusting device of display panels, which are characterized in that a target white point color coordinate value is determined by measuring the current white point color coordinate value of each display panel according to the measured white point color coordinate value of each display panel; and sequentially adjusting the initial data voltage of each color sub-pixel of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel, so that the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value, and the adjusted data voltage is used as the standard data voltage of each color sub-pixel of each display panel. The data voltages of the sub-pixels of each color of each display panel are adjusted, so that the chromaticity of each adjusted display panel is basically equal to the coordinate value of the target white point color, and the chromaticity consistency of each display panel is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a chromaticity adjusting method and a chromaticity adjusting device of a display panel.
Background
In the field of Display technology, Liquid Crystal Display (LCD) panels have replaced Cathode Ray Tube (CRT) Display devices. The liquid crystal display panel has the advantages of thin body, low power consumption, no radiation and the like, and is widely applied to the display field.
The chromaticity of a liquid crystal display panel is an important index for measuring the display performance, and the backlight and the color film of the display device become main factors for determining the chromaticity. Ideally, the chromaticity of the display panels produced in the same batch is expected to be completely consistent, but in the actual production process, although the production process is the same, the chromaticity of the products in the same batch still has a certain difference, which results in inconsistent chromaticity indexes of the products. Therefore, it is necessary to provide a chromaticity adjusting method to improve the chromaticity uniformity of each display panel.
Disclosure of Invention
The invention provides a method and a device for adjusting the chromaticity of a display panel, which are used for adjusting the chromaticity of the display panel and improving the chromaticity consistency of the display panels in the same batch.
In a first aspect, the present invention provides a method for adjusting chromaticity of a display panel, including:
measuring the current white point color coordinate value of each display panel, and determining a target white point color coordinate value according to the measured white point color coordinate value of each display panel;
and sequentially adjusting the initial data voltage of each color sub-pixel of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel, so that the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value, and taking the adjusted data voltage as the standard data voltage of each color sub-pixel of each display panel.
In a possible implementation manner, in the foregoing method provided by the present invention, the display panel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel;
the adjusting the initial data voltage of each color sub-pixel of each display panel in sequence according to the current white point color coordinate value and the target white point color coordinate value of each display panel comprises:
when the current white point color coordinate value of the display panel is larger than the target white point color coordinate value, and the difference value between the current white point color coordinate value of the display panel and the target white point color coordinate value is larger than the first preset value, determining whether the data voltage of the blue sub-pixel of the display panel reaches the maximum value;
when the data voltage of the blue sub-pixel does not reach the maximum value, increasing the data voltage of the blue sub-pixel;
when the data voltage of the blue sub-pixel reaches the maximum value, reducing the data voltage of the red sub-pixel and the green sub-pixel;
when the current white point color coordinate value of the display panel is smaller than the target white point color coordinate value and the difference value between the current white point color coordinate value of the display panel and the target white point color coordinate value is larger than the first preset value, determining whether the data voltages of the red sub-pixel and the green sub-pixel of the display panel reach the maximum value;
when the data voltages of the red sub-pixel and the green sub-pixel reach the maximum value, reducing the data voltage of the blue sub-pixel;
and when the data voltage of at least one of the red sub-pixel and the green sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value.
In one possible implementation manner, in the method provided by the present invention, the determining a target white point color coordinate value according to the measured white point color coordinate value of each display panel includes:
determining a maximum white point color coordinate value in each of the display panels as the target white point color coordinate value; alternatively, the first and second electrodes may be,
determining a minimum white point color coordinate value in each of the display panels as the target white point color coordinate value; alternatively, the first and second electrodes may be,
and determining the average value of the white point color coordinate values of the display panels as the target white point color coordinate value.
In a possible implementation manner, in the foregoing method provided by the present invention, the method further includes:
measuring the current maximum display brightness of each display panel, and determining the target maximum display brightness according to the measured maximum display brightness of each display panel;
and sequentially adjusting the data voltage of each color sub-pixel of each display panel according to the current maximum display brightness and the target maximum display brightness of each display panel, so that the difference value between the adjusted maximum display brightness and the target maximum display brightness of each display panel is smaller than a second preset value, and the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value.
In a possible implementation manner, in the foregoing method provided by the present invention, the display panel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel;
the sequentially adjusting the data voltage of each color sub-pixel of each display panel according to the current maximum display brightness and the target maximum display brightness of each display panel comprises:
when the current maximum display brightness of the display panel is larger than the target maximum display brightness and the difference value between the current maximum display brightness of the display panel and the target maximum display brightness is larger than the second preset value, reducing the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel;
when the current maximum display brightness of the display panel is smaller than the target maximum display brightness and the difference value between the current maximum display brightness of the display panel and the target maximum display brightness is larger than the second preset value, determining whether the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel all reach the maximum value;
and when the data voltage of at least one of the red sub-pixel, the green sub-pixel and the blue sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value in the red sub-pixel, the green sub-pixel and the blue sub-pixel.
In a possible implementation manner, in the method provided by the present invention, the determining a target maximum display luminance according to the measured maximum display luminance of each of the display panels includes:
determining a maximum value of the maximum display luminance of each of the display panels as the target maximum display luminance; alternatively, the first and second electrodes may be,
determining a minimum value of the maximum display brightness of each display panel as the target maximum display brightness; alternatively, the first and second electrodes may be,
determining an average value of the maximum display luminance of each of the display panels as the target maximum display luminance.
In a second aspect, the present invention provides a chromaticity adjusting apparatus of a display panel, including:
the determining unit is used for measuring the current white point color coordinate value of each display panel and determining a target white point color coordinate value according to the measured white point color coordinate value of each display panel;
and the adjusting unit is used for sequentially adjusting the initial data voltage of each color sub-pixel of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel, so that the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value, and the adjusted data voltage is used as the standard data voltage corresponding to the white picture of each display panel.
In a possible implementation manner, in the above apparatus provided by the present invention, the adjusting unit is specifically configured to determine whether the data voltage of the blue sub-pixel of the display panel has reached the maximum value when the current white point color coordinate value of the display panel is greater than the target white point color coordinate value, and the difference between the current white point color coordinate value of the display panel and the target white point color coordinate value is greater than the first preset value; when the data voltage of the blue sub-pixel does not reach the maximum value, increasing the data voltage of the blue sub-pixel; when the data voltage of the blue sub-pixel reaches the maximum value, reducing the data voltage of the red sub-pixel and the green sub-pixel; when the current white point color coordinate value of the display panel is smaller than the target white point color coordinate value and the difference value between the current white point color coordinate value of the display panel and the target white point color coordinate value is larger than the first preset value, determining whether the data voltages of the red sub-pixel and the green sub-pixel of the display panel reach the maximum value; when the data voltages of the red sub-pixel and the green sub-pixel reach the maximum value, reducing the data voltage of the blue sub-pixel; and when the data voltage of at least one of the red sub-pixel and the green sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value.
In a possible implementation manner, in the apparatus provided by the present invention, the determining unit is further configured to measure a current maximum display brightness of each of the display panels, and determine a target maximum display brightness according to the measured maximum display brightness of each of the display panels;
the adjusting unit is further configured to sequentially adjust the data voltages of the color sub-pixels of each display panel according to the current maximum display brightness and the target maximum display brightness of each display panel, so that a difference between the adjusted maximum display brightness and the target maximum display brightness of each display panel is smaller than a second preset value, and a difference between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than the first preset value.
In a possible implementation manner, in the above apparatus provided by the present invention, the adjusting unit is specifically configured to decrease the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel when the current maximum display brightness of the display panel is greater than the target maximum display brightness and a difference between the current maximum display brightness of the display panel and the target maximum display brightness is greater than the second preset value; when the current maximum display brightness of the display panel is smaller than the target maximum display brightness and the difference value between the current maximum display brightness of the display panel and the target maximum display brightness is larger than the second preset value, determining whether the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel all reach the maximum value; and when the data voltage of at least one of the red sub-pixel, the green sub-pixel and the blue sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value in the red sub-pixel, the green sub-pixel and the blue sub-pixel.
The invention has the following beneficial effects:
the invention provides a chromaticity adjusting method and device of a display panel, which are characterized in that a target white point color coordinate value is determined by measuring the current white point color coordinate value of each display panel according to the measured white point color coordinate value of each display panel; and sequentially adjusting the initial data voltage of each color sub-pixel of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel, so that the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value, and the adjusted data voltage is used as the standard data voltage of each color sub-pixel of each display panel. The data voltages of the sub-pixels of each color of each display panel are adjusted, so that the chromaticity of each adjusted display panel is basically equal to the coordinate value of the target white point color, and the chromaticity consistency of each display panel is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of color coordinates provided by an embodiment of the present invention;
FIG. 3a is a graph of the relationship between the white point color coordinates Wx and the data voltage according to the embodiment of the present invention;
FIG. 3b is a graph showing the relationship between the white point color coordinates Wy and the data voltage according to the embodiment of the present invention;
FIG. 3c is a graph of luminance versus data voltage provided by an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a method for adjusting chromaticity of a display panel according to an embodiment of the present invention;
FIG. 5 is a second flowchart of a method for adjusting chromaticity of a display panel according to an embodiment of the present invention;
FIG. 6 is a third flowchart illustrating a method for adjusting chromaticity of a display panel according to an embodiment of the present invention;
FIG. 7 is a fourth flowchart illustrating a method for adjusting chromaticity of a display panel according to an embodiment of the present invention;
FIG. 8 is a fifth flowchart illustrating a method for adjusting chromaticity of a display panel according to an embodiment of the present invention;
FIG. 9 is a sixth flowchart of a method for adjusting chromaticity of a display panel according to an embodiment of the present invention;
FIG. 10a is a graph comparing white point color coordinates Wx before and after adjustment;
FIG. 10b is a graph comparing white point color coordinates Wy before and after adjustment;
FIG. 10c is a graph of brightness contrast before and after adjustment;
fig. 11 is a schematic structural diagram of a chromaticity adjusting apparatus of a display panel according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, the display panel may be a display panel in a liquid crystal display device, as shown in fig. 1, the liquid crystal display device may include a backlight module 100 and a display panel 200 located at a light-emitting side of the backlight module; the display panel 200 may further include: the liquid crystal display panel comprises an array substrate 201, a color film substrate 202 and a liquid crystal layer 203, wherein the array substrate 201, the color film substrate 202 and the liquid crystal layer 203 are oppositely arranged. In practical application, the color film substrate includes color film units of multiple colors, and a sub-pixel unit is formed by the color film units, the control units and the corresponding liquid crystal layers corresponding to the control units in the array substrate. Under the control of the control unit, the liquid crystal molecules corresponding to each control unit can be deflected, so that the display brightness of the pixel unit is changed. The main factors influencing the two indexes of brightness and chromaticity of the display panel are the emergent light of the backlight module and the color of the color film unit, but have a certain relationship with the driving voltage of the unit of each sub-pixel. As shown in fig. 2, which is a schematic diagram of CIExy chromaticity coordinates, all natural colors can be expressed by quantitative color coordinates, and different colors are expressed as a certain point in the color coordinates shown in fig. 1. All colors within a triangle formed by vertices of red, green, and blue can be expressed by mixing red, green, and blue at different ratios. Further, white W having the maximum luminance can be generally obtained by mixing when red R, green G, and blue are all set at the maximum luminance, and white W is generally in the vicinity of the intersection of the center lines of a triangle surrounded by the vertices of red R, green G, and blue.
After the display device is produced, the backlight module and the color film unit cannot be replaced, however, even if the white point color coordinates of the display panels produced in the same batch still have differences, in the implementation of the invention, the chromaticity of the display panels is adjusted by finely adjusting the data voltages of the red sub-pixels, the green sub-pixels and the blue sub-pixels, so that the chromaticity of the display panels reaches the same level, and the chromaticity uniformity of the display panels in the same batch is improved.
As shown in fig. 3 a-3 c, the white point color coordinates (Wx, Wy) and the maximum display luminance of the display panel are plotted against the data voltage. As shown in fig. 3a and 3b, as the data voltage of the red sub-pixel R decreases, the Wx coordinate decreases significantly, and Wy decreases slightly, but the trend is slower; with the reduction of the data voltage of the green sub-pixel G, the Wy coordinate is obviously reduced, and Wx is reduced to some extent, but the trend is slower; as the data voltage of the blue sub-pixel B decreases, both the Wx coordinate and the Wy coordinate increase significantly; the data voltages of the red sub-pixel R, the green sub-pixel G and the blue sub-pixel B have the same influence tendency on the luminance, and the maximum display luminance of the display panel increases with the increase of the data voltages of the red sub-pixel R, the green sub-pixel G and the blue sub-pixel B. The data voltage of the green sub-pixel G has the most significant influence on the luminance, and the data voltage of the blue sub-pixel B has the least influence on the luminance.
According to the relationship between the data voltages of the sub-pixels with different colors and the white point color coordinates of the display panel, the embodiment of the invention provides a chromaticity adjusting method of the display panel, which is used for performing uniform adjustment on the chromaticities of the display panels in the same batch.
As shown in fig. 4, an embodiment of the present invention further provides a method for adjusting chromaticity of a display panel, including:
s10, measuring the current white point color coordinate value of each display panel, and determining a target white point color coordinate value according to the measured white point color coordinate value of each display panel;
and S20, sequentially adjusting the initial data voltage of each color sub-pixel of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel, enabling the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel to be smaller than a first preset value, and taking the adjusted data voltage as the standard data voltage of each color sub-pixel of each display panel.
In the chromaticity adjusting method provided by the embodiment of the invention, the current white point color coordinate value of each display panel is measured, the appropriate target white point color coordinate value is determined according to the white point color coordinate value of each display panel in the same batch, and the data voltage of each color sub-pixel of each display panel is sequentially adjusted, so that the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than the first preset value. The first preset value can be an empirical value obtained by a person skilled in the art through multiple experiments, and in general, the value of the first preset value is small, so that the white point color coordinate values of the display panels in the same batch are basically equal, and the chromaticity uniformity of the display panels is improved.
The display panel generally includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the present embodiment takes the case where the display panel includes the above three sub-pixels as an example to describe a specific adjustment method. In practical applications, the display panel may further include sub-pixels of other colors, and these other colors may also be formed by mixing red, green and blue colors in different proportions, so that the method provided by the embodiment of the present invention for influencing the chromaticity of the display panel by adjusting the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel is most applicable.
Specifically, in the above step S20, sequentially adjusting the initial data voltages of the color sub-pixels of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel may include the following steps as shown in fig. 5:
s200, determining the relation between the current white point color coordinate value and the target white point color coordinate value of the display panel; executing step S201 when the current white point color coordinate value of the display panel is greater than the target white point color coordinate value, and the difference between the current white point color coordinate value and the target white point color coordinate value of the display panel is greater than a first preset value; executing step S204 when the current white point color coordinate value of the display panel is smaller than the target white point color coordinate value and the difference value between the current white point color coordinate value and the target white point color coordinate value of the display panel is larger than a first preset value;
s201, determining whether the data voltage of a blue sub-pixel of the display panel reaches the maximum value; executing step S202 when determining that the data voltage of the blue sub-pixel does not reach the maximum value, and executing step S203 when determining that the data voltage of the blue sub-pixel reaches the maximum value;
s202, increasing the data voltage of the blue sub-pixel;
and S203, reducing the data voltage of the red sub-pixel and the green sub-pixel.
S204, determining whether the data voltages of the red sub-pixel and the green sub-pixel of the display panel reach the maximum value; when the data voltages of the red sub-pixel and the green sub-pixel reach the maximum value, step S205 is executed; when the data voltage of at least one of the red sub-pixel and the green sub-pixel does not reach the maximum value, step S206 is executed;
s205, reducing the data voltage of the blue sub-pixel;
and S206, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value in the red sub-pixel and the green sub-pixel.
There are typically two cases where the current white point color coordinate values of the display panel are either large or small relative to the target white point color coordinate values. For both cases, the embodiment of the present invention first considers increasing the data voltage of the blue sub-pixel when the current white point color coordinate value of the display panel is larger than the target white point color coordinate value. As can be seen from the foregoing adjustment principle, the purpose of reducing the white point color coordinate value can be achieved by increasing the data voltage of the blue sub-pixel or reducing the data voltages of the red and green sub-pixels, but reducing the data voltages of the red and green sub-pixels reduces the luminance of the display panel. Similarly, in the case that the current white point color coordinate value of the display panel is smaller than the target white point color coordinate value, the embodiment of the invention first considers increasing the data voltages of the red and green sub-pixels instead of decreasing the data voltage of the blue sub-pixel. In the actual adjustment process, the data voltages of the red sub-pixel and the green sub-pixel may already reach the maximum value, and the increase adjustment cannot be performed any more.
In step S206, increasing the data voltage of the sub-pixel whose data voltage does not reach the maximum value in the red sub-pixel and the green sub-pixel may include the following steps as shown in fig. 6:
s2061, determining whether the data voltage of the red sub-pixel and the green sub-pixel does not reach the maximum value; when the data voltages of the red sub-pixel and the green sub-pixel do not reach the maximum value, executing step S2062; when the data voltage of the red sub-pixel does not reach the maximum value and the data voltage of the green sub-pixel reaches the maximum value, executing step S2063; when the data voltage of the red sub-pixel reaches the maximum value and the data voltage of the green sub-pixel does not reach the maximum value, executing step S2064;
s2062, increasing the data voltage of the red sub-pixel and the green sub-pixel;
s2063, increasing the data voltage of the red sub-pixel;
s2064, the data voltage of the green sub-pixel is increased.
It can be appreciated that increasing the data voltage of the red sub-pixel and the green sub-pixel simultaneously can increase the brightness of the display panel to a greater extent than increasing the data voltage of the red sub-pixel or the green sub-pixel alone. Therefore, in an implementation, it may be determined whether the data voltages of the red sub-pixel and the green sub-pixel have not reached the maximum value, and if yes, the data voltages of the red sub-pixel and the green sub-pixel are increased. When one of the red sub-pixel and the green sub-pixel reaches the maximum value, the data voltage of the sub-pixel which does not reach the maximum value in the red sub-pixel and the green sub-pixel is increased to achieve the purpose of improving the white point coordinate value of the display panel.
In a specific implementation, in step S10, the determining the target white point color coordinate value according to the measured white point color coordinate values of the display panels may include:
determining the maximum white point color coordinate value in each display panel as a target white point color coordinate value; alternatively, the first and second electrodes may be,
determining the minimum white point color coordinate value in each display panel as a target white point color coordinate value; alternatively, the first and second electrodes may be,
the average of the white point color coordinate values of the respective display panels is determined as a target white point color coordinate value.
In the actual operation process, the standards of the display panels in different batches are different, and proper target white point color coordinate values are required to be selected for adjusting the chromaticities of the display panels in the same batch to be consistent. As described in the embodiments of the present invention, the maximum white point color coordinate value in each display panel may be determined as the target white point color coordinate value, the minimum white point color coordinate value in each display panel may be determined as the target white point color coordinate value, or the average of the white point color coordinate values of each display panel may be determined as the target white point color coordinate value. In addition, the target white point color coordinate value may be determined according to actual requirements according to different applications of the display panel, and is not limited herein.
In practical applications, the chromaticity and the luminance are two important indexes for measuring the display panel, and in view of this, the method provided by the embodiment of the present invention may further adjust the luminance of the display panel after adjusting the chromaticity of the display panel.
As shown in fig. 7, the method provided in the embodiment of the present invention further includes:
s30, measuring the current maximum display brightness of each display panel, and determining the target maximum display brightness according to the measured maximum display brightness of each display panel;
and S40, sequentially adjusting the data voltages of the color sub-pixels of each display panel according to the current maximum display brightness and the target maximum display brightness of each display panel, so that the difference between the adjusted maximum display brightness and the target maximum display brightness of each display panel is smaller than a second preset value, and the difference between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value.
As described above, the maximum display luminance (i.e., the white display luminance) of the display panel increases with the increase of the data voltage of the sub-pixels of each color, and decreases with the decrease of the data voltage of the sub-pixels of each color. It should be noted that, when the data voltage is adjusted, the maximum display brightness of the display panel is affected, and the white point color coordinate value adjusted before is also affected, so that when the maximum display brightness of the display panel is adjusted, the white point color coordinate value of the display panel needs to be considered, so that the difference between the white point color coordinate value and the target white point color coordinate value of the display panel after final adjustment is smaller than the first preset value, and the difference between the maximum display brightness after adjustment and the target maximum display brightness is smaller than the second preset value. The first preset value and the second preset value are empirical values obtained by a person skilled in the art through multiple experiments, and specific values of the first preset value and the second preset value are not limited herein.
Further, in step S40, the method may further include the following steps shown in fig. 8, in which the data voltages of the color sub-pixels of each display panel are sequentially adjusted according to the current maximum display luminance and the target maximum display luminance of each display panel:
s400, determining the relation between the current maximum display brightness and the target maximum display brightness of the display panel; executing step S401 when the current maximum display brightness of the display panel is greater than the target maximum display brightness and the difference between the current maximum display brightness of the display panel and the target maximum display brightness is greater than a second preset value; executing step S402 when the current maximum display brightness of the display panel is less than the target maximum display brightness and the difference between the current maximum display brightness of the display panel and the target maximum display brightness is greater than a second preset value;
s401, reducing the data voltage of the red sub-pixel, the green sub-pixel and the blue sub-pixel;
s402, determining whether the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel all reach the maximum value; when the data voltage of at least one of the red, green and blue sub-pixels does not reach the maximum value, step S403 is executed; when the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel all reach the maximum value, executing step S404;
and S403, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value in the red sub-pixel, the green sub-pixel and the blue sub-pixel.
S404, determining that the display panel is a defective product.
In general, the current maximum display brightness of the display panel is larger or smaller than the target maximum display brightness. For the two situations, when the current maximum display brightness of the display panel is larger than the target maximum display brightness, the embodiment of the invention can reduce the data voltage of the red sub-pixel, the green sub-pixel or the blue sub-pixel to achieve the purpose of reducing the maximum display brightness of the display panel according to the adjustment principle. In the embodiment of the invention, the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel can be reduced simultaneously, so that the great influence of brightness adjustment on the adjusted chromaticity is reduced. When the current maximum display brightness of the display panel is smaller than the target maximum display brightness, the data voltages of the red, green, and blue sub-pixels need to be increased. In specific implementation, it may be determined which color sub-pixels have data voltages that do not reach the maximum value, and the data voltages are increased and adjusted. If the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel all reach the maximum value, it means that the display panel cannot increase the data voltage of the sub-pixels, and therefore the target maximum display brightness cannot be reached, and the display panel is an unqualified product.
In step S403, increasing the data voltage of the sub-pixel whose data voltage does not reach the maximum value among the red sub-pixel, the green sub-pixel, and the blue sub-pixel may include the following steps as shown in fig. 9:
s4031, determining whether the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel do not reach the maximum value; when the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel do not reach the maximum value, executing step S4032; when only the data voltage of the red sub-pixel does not reach the maximum value, executing step S4033; when only the data voltage of the green sub-pixel does not reach the maximum value, executing step S4034; when only the data voltage of the blue sub-pixel does not reach the maximum value, performing step S4035; when the data voltages of the red and green sub-pixels do not reach the maximum value and the data voltage of the blue sub-pixel reaches the maximum value, step S4036 is executed; when the data voltages of the red and blue sub-pixels do not reach the maximum value and the data voltage of the green sub-pixel reaches the maximum value, step S4037 is executed; when the data voltages of the green sub-pixel and the blue sub-pixel do not reach the maximum value and the data voltage of the red sub-pixel reaches the maximum value, executing step S4038;
s4032, increasing the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel;
s4033, increasing the data voltage of the red sub-pixel;
s4034, increasing the data voltage of the green sub-pixel;
s4035, increasing the data voltage of the blue sub-pixel;
s4036, increasing the data voltage of the red sub-pixel and the green sub-pixel;
s4037, increasing the data voltage of the red sub-pixel and the blue sub-pixel;
and S4038, increasing the data voltage of the green sub-pixel and the blue sub-pixel.
Firstly, whether the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel all reach the maximum value can be determined; when the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel do not reach the maximum value, the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel can be increased simultaneously, and therefore the influence on the chromaticity can be reduced. When the data voltage of only one or two of the red, green and blue sub-pixels does not reach the maximum value, the data voltage of the sub-pixel whose data voltage does not reach the maximum value may be increased to increase the maximum display brightness of the display panel, and the specific adjustment manner includes the six adjustment cases of steps S4033-S4038.
It should be noted that after the white frame display brightness of the display panel is adjusted, it is further required to further detect whether the current white point color coordinate value of the display panel meets the requirement, and if not, it is further required to further fine-tune the white point color coordinate value and the maximum display brightness so that both parameters are within the acceptable range.
In a specific implementation, in step S30, the determining the target maximum display luminance according to the measured maximum display luminance of each display panel includes:
determining the maximum value of the maximum display brightness of each display panel as the target maximum display brightness; alternatively, the first and second electrodes may be,
determining the minimum value of the maximum display brightness of each display panel as the target maximum display brightness; alternatively, the first and second electrodes may be,
the average value of the maximum display luminances of the respective display panels is determined as a target maximum display luminance.
In the actual operation process, the standards of the display panels in different batches are different, and the proper target white point color coordinate value needs to be selected when the maximum display brightness of the display panels in the same batch is adjusted to be consistent. As described in the embodiment of the present invention, the maximum value of the maximum display luminance of each display panel may be determined as the target maximum display luminance, the minimum value of the maximum display luminance of each display panel may be determined as the target maximum display luminance, and the average value of the maximum display luminance of each display panel may be determined as the target maximum display luminance. In addition, the target maximum display brightness may also be determined according to actual requirements according to different applications of the display panel, and is not limited herein.
According to the chromaticity adjusting method, 32 samples are selected from the display panels in the same batch to compare data before and after adjustment. As shown in fig. 10a to 10c, the contrast curves of the white point color coordinate Wx, the white point color coordinate Wy and the maximum display luminance corresponding to each sample before and after the data voltage adjustment are shown. The circular filling points represent the parameter values before adjustment, the black squares represent the parameter values after adjustment, and as shown in fig. 10a to 10c, the white point color coordinates and the maximum display luminance level of each sample after adjustment of the data voltage both protect higher consistency, and the chromaticity and luminance uniformity of each display panel are improved. The following table shows the data of each sample before and after adjustment and the estimated theoretical value.
As can be seen from the data in the table above, the maximum difference of the white point color coordinates Wx of each sample is adjusted to be 0.014 by the data voltage, the maximum difference of the white point color coordinates Wy is 0.02, and the maximum difference of the brightness is 100 nit; after the data voltage is adjusted, the maximum difference of the white point color coordinates Wx is 0.004, the maximum difference of the white point color coordinates Wy is 0.002, and the maximum difference of the brightness is 20 nit. The consistency of the chromaticity and the brightness of each sample is greatly improved.
Based on the same inventive concept, an embodiment of the present invention further provides a chromaticity adjusting apparatus for a display panel, as shown in fig. 11, the apparatus provided in the embodiment of the present invention includes:
a determining unit 111, configured to measure a current white point color coordinate value of each display panel, and determine a target white point color coordinate value according to the measured white point color coordinate value of each display panel;
and an adjusting unit 112, configured to sequentially adjust the initial data voltages of the color sub-pixels of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel, so that the difference between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value, and use the adjusted data voltages as standard data voltages of the color sub-pixels of each display panel.
The device provided by the embodiment of the invention adjusts the data voltage of the sub-pixel of each color of each display panel, so that the chromaticity of each adjusted display panel is basically equal to the coordinate value of the target white point color, and the chromaticity consistency of each display panel is improved.
Optionally, the adjusting unit 112 is specifically configured to determine whether the data voltage of the blue sub-pixel of the display panel has reached the maximum value when the current white point color coordinate value of the display panel is greater than the target white point color coordinate value and the difference between the current white point color coordinate value and the target white point color coordinate value of the display panel is greater than a first preset value; when the data voltage of the blue sub-pixel does not reach the maximum value, increasing the data voltage of the blue sub-pixel; when the data voltage of the blue sub-pixel reaches the maximum value, reducing the data voltage of the red sub-pixel and the green sub-pixel; when the current white point color coordinate value of the display panel is smaller than the target white point color coordinate value and the difference value between the current white point color coordinate value and the target white point color coordinate value of the display panel is larger than a first preset value, determining whether the data voltages of the red sub-pixel and the green sub-pixel of the display panel reach the maximum value; when the data voltage of the red sub-pixel and the data voltage of the green sub-pixel reach the maximum value, reducing the data voltage of the blue sub-pixel; and when the data voltage of at least one of the red sub-pixel and the green sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value.
Optionally, the adjusting unit 112 is specifically configured to determine whether the data voltages of the red sub-pixel and the green sub-pixel do not reach the maximum value; when the data voltages of the red sub-pixel and the green sub-pixel do not reach the maximum value, increasing the data voltages of the red sub-pixel and the green sub-pixel; when the data voltage of the red sub-pixel does not reach the maximum value and the data voltage of the green sub-pixel reaches the maximum value, increasing the data voltage of the red sub-pixel; and when the data voltage of the red sub-pixel reaches the maximum value and the data voltage of the green sub-pixel does not reach the maximum value, increasing the data voltage of the green sub-pixel.
Optionally, the determining unit 111 is specifically configured to determine the maximum white point color coordinate value in each display panel as the target white point color coordinate value; or, determining the minimum white point color coordinate value in each display panel as a target white point color coordinate value; alternatively, the average of the white point color coordinate values of the respective display panels is determined as the target white point color coordinate value.
Optionally, the determining unit 111 is further configured to measure the current maximum display brightness of each display panel, and determine the target maximum display brightness according to the measured maximum display brightness of each display panel;
and the adjusting unit is further used for sequentially adjusting the data voltages of the color sub-pixels of each display panel according to the current maximum display brightness and the target maximum display brightness of each display panel, so that the difference value between the adjusted maximum display brightness and the target maximum display brightness of each display panel is smaller than a second preset value, and the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value.
Optionally, the adjusting unit 112 is specifically configured to reduce the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel when the current maximum display brightness of the display panel is greater than the target maximum display brightness and a difference between the current maximum display brightness of the display panel and the target maximum display brightness is greater than a second preset value; when the current maximum display brightness of the display panel is smaller than the target maximum display brightness and the difference value between the current maximum display brightness and the target maximum display brightness of the display panel is larger than a second preset value, determining whether the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel all reach the maximum value; and when the data voltage of at least one of the red sub-pixel, the green sub-pixel and the blue sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value in the red sub-pixel, the green sub-pixel and the blue sub-pixel.
Optionally, the adjusting unit 112 is specifically configured to determine whether the data voltages of the red sub-pixel, the green sub-pixel, and the blue sub-pixel have not reached the maximum value; when the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel do not reach the maximum value, increasing the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel; increasing the data voltage of the red sub-pixel when only the data voltage of the red sub-pixel does not reach the maximum value; increasing the data voltage of the green sub-pixel when only the data voltage of the green sub-pixel does not reach the maximum value; increasing the data voltage of the blue sub-pixel when only the data voltage of the blue sub-pixel does not reach the maximum value; when the data voltage of the red sub-pixel and the green sub-pixel does not reach the maximum value and the data voltage of the blue sub-pixel reaches the maximum value, increasing the data voltage of the red sub-pixel and the green sub-pixel; when the data voltage of the red sub-pixel and the blue sub-pixel does not reach the maximum value and the data voltage of the green sub-pixel reaches the maximum value, increasing the data voltage of the red sub-pixel and the blue sub-pixel; and when the data voltage of the green sub-pixel and the blue sub-pixel does not reach the maximum value and the data voltage of the red sub-pixel reaches the maximum value, increasing the data voltage of the green sub-pixel and the blue sub-pixel.
Optionally, the determining unit 111 is specifically configured to determine a maximum value of the maximum display luminance of each display panel as the target maximum display luminance; or determining the minimum value of the maximum display brightness of each display panel as the target maximum display brightness; alternatively, an average value of the maximum display luminances of the respective display panels is determined as the target maximum display luminance.
According to the chromaticity adjusting method and device of the display panel, provided by the embodiment of the invention, the current white point color coordinate value of each display panel is measured, and the target white point color coordinate value is determined according to the measured white point color coordinate value of each display panel; and sequentially adjusting the initial data voltage of each color sub-pixel of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel, so that the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value, and the adjusted data voltage is used as the standard data voltage of each color sub-pixel of each display panel. The data voltages of the sub-pixels of each color of each display panel are adjusted, so that the chromaticity of each adjusted display panel is basically equal to the coordinate value of the target white point color, and the chromaticity consistency of each display panel is improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A method for adjusting chromaticity of a display panel includes:
measuring the current white point color coordinate value of each display panel, and determining a target white point color coordinate value according to the measured white point color coordinate value of each display panel;
sequentially adjusting the initial data voltage of each color sub-pixel of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel, so that the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value, and taking the adjusted data voltage as the standard data voltage of each color sub-pixel of each display panel;
the display panel comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel;
the adjusting the initial data voltage of each color sub-pixel of each display panel in sequence according to the current white point color coordinate value and the target white point color coordinate value of each display panel comprises:
when the current white point color coordinate value of the display panel is larger than the target white point color coordinate value, and the difference value between the current white point color coordinate value of the display panel and the target white point color coordinate value is larger than the first preset value, determining whether the data voltage of the blue sub-pixel of the display panel reaches the maximum value;
when the data voltage of the blue sub-pixel does not reach the maximum value, increasing the data voltage of the blue sub-pixel;
when the data voltage of the blue sub-pixel reaches the maximum value, reducing the data voltage of the red sub-pixel and the green sub-pixel;
when the current white point color coordinate value of the display panel is smaller than the target white point color coordinate value and the difference value between the current white point color coordinate value of the display panel and the target white point color coordinate value is larger than the first preset value, determining whether the data voltages of the red sub-pixel and the green sub-pixel of the display panel reach the maximum value;
when the data voltages of the red sub-pixel and the green sub-pixel reach the maximum value, reducing the data voltage of the blue sub-pixel;
and when the data voltage of at least one of the red sub-pixel and the green sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value.
2. The method of claim 1, wherein determining a target white point color coordinate value based on the measured white point color coordinate values for each of the display panels comprises:
determining a maximum white point color coordinate value in each of the display panels as the target white point color coordinate value; alternatively, the first and second electrodes may be,
determining a minimum white point color coordinate value in each of the display panels as the target white point color coordinate value; alternatively, the first and second electrodes may be,
and determining the average value of the white point color coordinate values of the display panels as the target white point color coordinate value.
3. The method of claim 1, further comprising:
measuring the current maximum display brightness of each display panel, and determining the target maximum display brightness according to the measured maximum display brightness of each display panel;
and sequentially adjusting the data voltage of each color sub-pixel of each display panel according to the current maximum display brightness and the target maximum display brightness of each display panel, so that the difference value between the adjusted maximum display brightness and the target maximum display brightness of each display panel is smaller than a second preset value, and the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value.
4. The method of claim 3, wherein the display panel comprises red, green, and blue sub-pixels;
the sequentially adjusting the data voltage of each color sub-pixel of each display panel according to the current maximum display brightness and the target maximum display brightness of each display panel comprises:
when the current maximum display brightness of the display panel is larger than the target maximum display brightness and the difference value between the current maximum display brightness of the display panel and the target maximum display brightness is larger than the second preset value, reducing the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel;
when the current maximum display brightness of the display panel is smaller than the target maximum display brightness and the difference value between the current maximum display brightness of the display panel and the target maximum display brightness is larger than the second preset value, determining whether the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel all reach the maximum value;
and when the data voltage of at least one of the red sub-pixel, the green sub-pixel and the blue sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value in the red sub-pixel, the green sub-pixel and the blue sub-pixel.
5. The method of claim 3, wherein determining a target maximum display brightness based on the measured maximum display brightness for each of the display panels comprises:
determining a maximum value of the maximum display luminance of each of the display panels as the target maximum display luminance; alternatively, the first and second electrodes may be,
determining a minimum value of the maximum display brightness of each display panel as the target maximum display brightness; alternatively, the first and second electrodes may be,
determining an average value of the maximum display luminance of each of the display panels as the target maximum display luminance.
6. A chromaticity adjusting apparatus of a display panel, comprising:
the determining unit is used for measuring the current white point color coordinate value of each display panel and determining a target white point color coordinate value according to the measured white point color coordinate value of each display panel;
the adjusting unit is used for sequentially adjusting the initial data voltage of each color sub-pixel of each display panel according to the current white point color coordinate value and the target white point color coordinate value of each display panel, so that the difference value between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than a first preset value, and the adjusted data voltage is used as the standard data voltage of each color sub-pixel of each display panel;
the adjusting unit is specifically configured to determine whether the data voltage of the blue sub-pixel of the display panel has reached a maximum value when the current white point color coordinate value of the display panel is greater than the target white point color coordinate value and a difference between the current white point color coordinate value of the display panel and the target white point color coordinate value is greater than the first preset value; when the data voltage of the blue sub-pixel does not reach the maximum value, increasing the data voltage of the blue sub-pixel; when the data voltage of the blue sub-pixel reaches the maximum value, reducing the data voltage of the red sub-pixel and the green sub-pixel; when the current white point color coordinate value of the display panel is smaller than the target white point color coordinate value and the difference value between the current white point color coordinate value of the display panel and the target white point color coordinate value is larger than the first preset value, determining whether the data voltages of the red sub-pixel and the green sub-pixel of the display panel reach the maximum value; when the data voltages of the red sub-pixel and the green sub-pixel reach the maximum value, reducing the data voltage of the blue sub-pixel; and when the data voltage of at least one of the red sub-pixel and the green sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value.
7. The apparatus of claim 6, wherein the determining unit is further configured to measure a current maximum display brightness of each of the display panels, and determine a target maximum display brightness according to the measured maximum display brightness of each of the display panels;
the adjusting unit is further configured to sequentially adjust the data voltages of the color sub-pixels of each display panel according to the current maximum display brightness and the target maximum display brightness of each display panel, so that a difference between the adjusted maximum display brightness and the target maximum display brightness of each display panel is smaller than a second preset value, and a difference between the adjusted white point color coordinate value and the target white point color coordinate value of each display panel is smaller than the first preset value.
8. The apparatus according to claim 7, wherein the adjusting unit is specifically configured to decrease the data voltages of the red, green, and blue sub-pixels when the current maximum display brightness of the display panel is greater than the target maximum display brightness and a difference between the current maximum display brightness of the display panel and the target maximum display brightness is greater than the second preset value; when the current maximum display brightness of the display panel is smaller than the target maximum display brightness and the difference value between the current maximum display brightness of the display panel and the target maximum display brightness is larger than the second preset value, determining whether the data voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel all reach the maximum value; and when the data voltage of at least one of the red sub-pixel, the green sub-pixel and the blue sub-pixel does not reach the maximum value, increasing the data voltage of the sub-pixel of which the data voltage does not reach the maximum value in the red sub-pixel, the green sub-pixel and the blue sub-pixel.
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| CN109961735B (en) * | 2019-04-29 | 2022-12-20 | 上海天马微电子有限公司 | Display panel, display device and white balance adjusting method |
| CN110197642B (en) * | 2019-05-30 | 2020-12-18 | 京东方科技集团股份有限公司 | Method for acquiring tricolor brightness correction relationship, correction method and correction device of display |
| CN110444176B (en) * | 2019-07-26 | 2021-04-30 | 厦门天马微电子有限公司 | Pixel color difference compensation method and system of display panel and display device |
| CN111402817B (en) | 2020-03-30 | 2021-05-14 | 合肥京东方光电科技有限公司 | White point coordinate compensation method and device, computer equipment and storage medium |
| CN111653244B (en) * | 2020-06-30 | 2021-11-30 | 京东方科技集团股份有限公司 | Brightness adjusting method |
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| CN113035148A (en) * | 2021-03-22 | 2021-06-25 | 北海惠科光电技术有限公司 | Method and system for correcting chromaticity of liquid crystal panel, liquid crystal panel and storage medium |
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| CN114613339B (en) * | 2022-03-07 | 2023-05-09 | 深圳市华星光电半导体显示技术有限公司 | Chromaticity adjusting method and device for display panel |
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