CN111754905A - Display panel testing method and device - Google Patents
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- CN111754905A CN111754905A CN202010600407.3A CN202010600407A CN111754905A CN 111754905 A CN111754905 A CN 111754905A CN 202010600407 A CN202010600407 A CN 202010600407A CN 111754905 A CN111754905 A CN 111754905A
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- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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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
- G09G3/2007—Display of intermediate tones
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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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 embodiment of the invention discloses a test method and a device of a display panel, which determine data voltage compensation values corresponding to sub-pixels with different colors according to a difference value of target brightness of a picture in a set area under a first display picture and brightness of a picture in a set area under a second display picture and preset compensation proportions of the sub-pixels with different colors, so that the brightness difference caused by the power supply voltage difference received by the sub-pixels due to different voltage drops on power supply lines under different display pictures is counteracted by compensating data voltage, and further the brightness of the pictures displaying the same gray scale in the set area under different display pictures is the same; and the color coordinates of the display panel can more easily reach the target color coordinates when the data voltage compensation value obtained according to the technical scheme of the invention is compensated compared with a compensation mode of setting the same data voltage compensation value in the prior art because the proportions corresponding to the sub-pixels of various colors are not completely the same when the preset compensation proportion is set.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a method and a device for testing a display panel.
Background
With the development of display technology, the requirements on the display quality of the picture are higher and higher.
The conventional display panel generally includes a power line, which may be equivalent to a resistor network, and accordingly, when the power line transmits a power signal, a voltage drop inevitably occurs.
In the existing display panel, when the display panel displays different background pictures, the pictures at the same display gray scale position under different background pictures have the problem of inconsistent brightness and color coordinates, and the display effect is influenced.
Disclosure of Invention
The invention provides a method and a device for testing a display panel, which are used for compensating the inconsistency of the brightness and the color coordinates of a picture caused by different voltage drops of a power line when the display panel displays different background pictures, so that the display effect of the display panel is improved.
In a first aspect, an embodiment of the present invention provides a method for testing a display panel, including: controlling a display panel to display a first display picture, and adjusting the picture in a set area of the display panel to a target brightness and a target color coordinate;
switching the picture of the display panel to a second display picture, wherein the display gray scales corresponding to the picture in the set area are the same under the first display picture and the second display picture; the display gray scales corresponding to the first display picture and the second display picture are different outside the set area;
determining data voltage compensation values corresponding to the sub-pixels with different colors according to the difference value between the target brightness and the brightness of the picture in the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors; in the preset compensation proportion, the proportions corresponding to the sub-pixels of various colors are not completely the same;
and compensating the data voltage corresponding to the sub-pixel under the second display picture according to the data voltage compensation value.
Optionally, the preset compensation ratio is a light-emitting efficiency ratio of sub-pixels with different colors, and the compensation data corresponding to the sub-pixels with different colors respectively is determined according to a difference between the target brightness and the brightness of the setting area under the second display picture and the preset compensation ratio of the sub-pixels with different colors, including:
determining a first data voltage compensation value corresponding to the first color sub-pixel according to the difference value between the target brightness and the brightness of the second display picture;
and calculating the data voltage compensation values corresponding to the sub-pixels of other colors according to the first data voltage compensation value and the luminous efficiency ratio of the sub-pixels of other colors to the first color.
Optionally, calculating the data voltage compensation value corresponding to the other color sub-pixels according to the first data voltage compensation value and the luminous efficiency ratio of the other color sub-pixels to the first color sub-pixel, includes:
△Vdata2＝(η2/η1)*△Vdata1，
where Δ Vdata2 represents a second data voltage compensation value corresponding to the second color sub-pixel, η 2 represents light emission efficiency corresponding to the second color sub-pixel, η 1 represents light emission efficiency corresponding to the first color sub-pixel, and Δ Vdata1 represents a first data voltage compensation value corresponding to the first color sub-pixel; the second color sub-pixel is any color sub-pixel except the first color sub-pixel.
Optionally, the preset compensation proportion is a data voltage proportion corresponding to sub-pixels with different colors in the target color coordinate, and a picture in a set area in the target color coordinate reaches white balance;
determining compensation data respectively corresponding to the sub-pixels with different colors according to the difference value between the target brightness and the brightness of the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors, wherein the compensation data comprises the following steps:
determining a first data voltage compensation value corresponding to the first color sub-pixel according to the difference value between the target brightness and the brightness of the second display picture;
calculating data voltage compensation values corresponding to other color sub-pixels according to a first data voltage compensation value corresponding to the first color sub-pixel and the data voltage proportion of the other color sub-pixels to the first color sub-pixel under the target color coordinate;
optionally, calculating data voltage compensation values corresponding to other color sub-pixels according to the first data voltage compensation value corresponding to the first color sub-pixel and the data voltage ratios of the other color sub-pixels to the first color sub-pixel in the target color coordinate includes:
△Vdata2＝(data2/data1)*△Vdata1，
wherein Δ Vdata2 represents a second data voltage compensation value corresponding to the second color sub-pixel, data2 represents a data voltage corresponding to the second color sub-pixel at the target color coordinate, data1 represents a data voltage corresponding to the first color sub-pixel at the target color coordinate, and Δ Vdata1 represents a data voltage compensation value corresponding to the first color sub-pixel; the second color sub-pixel is any color sub-pixel except the first color sub-pixel.
Optionally, under the first display picture and the second display picture, the display pictures corresponding to the setting region are both white pictures.
Optionally, in the first display picture, the display picture corresponding to the set region is a black picture; under the second display picture, the display picture outside the set area is a white picture;
or, under the first display picture, the display picture corresponding to the set area is a white picture; and under the second display picture, the display picture outside the set area is a black picture.
Optionally, in the first display picture, the display gray scale outside the set region is the minimum gray scale; under the second display picture, setting the display gray scale outside the area as the maximum gray scale;
or the display gray scale outside the set region is the maximum gray scale under the first display picture, and the display gray scale outside the set region is the minimum gray scale under the second display picture.
Optionally, after compensating the data voltage corresponding to the sub-pixel in the second display image according to the data voltage compensation value, the method further includes:
judging whether the brightness and the color coordinate of the picture in the set area reach the target brightness and the target color coordinate or not under the second display picture;
if so, carrying out full binding point gamma debugging on a display model corresponding to the second display picture, wherein the display model corresponding to the second display picture comprises a display picture with different display gray scales in a set area and different display gray scales in a set area under the second display picture, and the display gray scale outside the set area is the same as the display gray scale outside the set area under the second display picture;
if not, continuing to execute the subsequent steps of controlling the display panel to display the second display picture and adjusting the picture in the setting area of the display panel to the target brightness and the target color coordinate until whether the brightness and the color coordinate of the picture in the following setting area of the second display picture reach the target brightness and the target color coordinate or not.
Optionally, the data voltage compensation values corresponding to the sub-pixels with different colors are determined according to the difference between the target brightness and the brightness of the picture in the setting area under the second display picture and the preset compensation ratio of the sub-pixels with different colors
Determining the substitution of the data voltage compensation values corresponding to the sub-pixels with different colors according to the difference value between the data voltage corresponding to the sub-pixel with the first color in the set area when the target brightness and the target color coordinate are reached in the set area under the first display picture and the data voltage corresponding to the sub-pixel with the first color in the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors;
or, determining a data voltage compensation value substitution corresponding to any color sub-pixel according to a difference value between a data voltage corresponding to any color sub-pixel in a set area when the target brightness and the target color coordinate are reached in the set area under the first display picture and a data voltage corresponding to the same color sub-pixel in the set area under the second display picture;
or, after switching the screen of the display panel to the second display screen, the method includes: adjusting the picture in the set area of the display panel to the target brightness and the target color coordinate; determining the data voltage compensation values corresponding to the sub-pixels with different colors according to the difference value between the target brightness and the brightness of the picture in the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors, wherein the data voltage compensation values are obtained by the following steps
And determining a data voltage compensation value substitution corresponding to any color sub-pixel according to the target brightness of the picture in the set area and the difference value of the data voltage corresponding to any color sub-pixel in the set area before and after the picture in the set area reaches the target color coordinate under the second display picture.
In a second aspect, an embodiment of the present invention further provides a testing apparatus for a display panel, including:
the control module is used for controlling the display panel to display a first display picture and adjusting the picture in the set area of the display panel to the target brightness and the target color coordinate;
the switching module is used for switching the picture of the display panel to a second display picture, wherein the display gray scales corresponding to the picture in the set area are the same under the first display picture and the second display picture; the display gray scales corresponding to the first display picture and the second display picture are different outside the set area;
the determining module is used for determining data voltage compensation values corresponding to the sub-pixels with different colors according to the difference value between the target brightness and the brightness of the picture in the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors; in the preset compensation proportion, the proportions corresponding to the sub-pixels of various colors are not completely the same;
and the compensation module is used for compensating the data voltage corresponding to the sub-pixel under the second display picture according to the data voltage compensation value.
According to the test method and the test device for the display panel, provided by the embodiment of the invention, the data voltage compensation values corresponding to the sub-pixels with different colors are determined according to the difference value between the target brightness of the picture in the set area under the first display picture and the brightness of the picture in the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors, so that the brightness difference caused by the power supply voltage difference received by the sub-pixels due to different voltage drops on the power supply lines under different display pictures is counteracted through the compensation of the data voltage, and further, the brightness of the pictures with the same gray scale displayed in the set areas under different display pictures is the same; and the proportion corresponding to the sub-pixels of various colors is not completely the same in the preset compensation proportion, so that compared with the compensation mode of setting the same data voltage compensation value in the prior art, when the data voltage compensation value obtained according to the method of the embodiment is compensated, the color coordinate of the display panel can more easily reach the target color coordinate, and further, the color coordinate of the display image with the same display gray scale can be more approximately consistent under different display images, so that the display panel has better display effect.
Drawings
Fig. 1 is a flowchart of a testing method of a display panel according to an embodiment of the present invention;
FIG. 2 is a diagram of a display screen according to an embodiment of the present invention;
FIG. 3 is a diagram of another display screen provided by an embodiment of the present invention;
FIG. 4 is a flowchart illustrating another testing method for a display panel according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating another testing method for a display panel according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating another testing method for a display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a testing apparatus for a display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background art, in the existing display panel, there is a problem that the display effect is affected due to inconsistent brightness and color coordinates of the pictures at the same display gray scale under different background pictures. The inventor has found that the above problems occur because when the display panel displays different background images, the driving current generated by the driving transistor in the pixel circuit at different background images is different, the voltage drop on the power line is related to the resistance of the power line and the current flowing on the power line, when the driving current is different, the current flowing on the power line is different when different background images are displayed, the voltage drop on the power line is different, when the power voltage is transmitted to the sub-pixels corresponding to the same display gray scale in different background images through the power line, the power voltage input to the sub-pixels is different, the brightness displayed by the sub-pixels at the same display gray scale is different when different background images are displayed, and when the display panel reaches white balance, the brightness of the sub-pixels with different colors needs to reach a set proportion, because the brightness displayed by the sub-pixels under the same gray scale is inconsistent when different background pictures are displayed, even after the brightness and the color coordinate under one background picture are adjusted to the target brightness and the color coordinate, the brightness and the color coordinate under the same gray scale are changed after the background picture is changed, namely the brightness cannot reach the target brightness after the background picture is changed, the color coordinate cannot reach the target color coordinate, and the display effect is poor. In the prior art, part of test methods provide the same compensation amount for different color sub-pixels in the display panel to compensate the brightness, however, the color coordinate of the display screen is not only related to the brightness, but also related to the luminous efficiency, so the prior art still has the problem of inconsistent color coordinate after only compensating the brightness.
Based on the above problem, an embodiment of the present invention provides a method for testing a display panel, and fig. 1 is a flowchart of the method for testing a display panel provided by the embodiment of the present invention, and referring to fig. 1, the method for testing a display panel includes:
optionally, the setting region is any region in the display region of the display panel, wherein the area of the setting region is smaller than the area of the display region of the display panel. The control of the display panel to display the first display image may be implemented by the driving chip providing the display panel with first display data corresponding to the first display image, where the first display data may include data voltages corresponding to sub-pixels in the display panel. Because the voltage drop of the power line in the display panel, when no compensation operation is performed, the display image in the set area of the display panel cannot reach the target brightness and the target color coordinate corresponding to the display gray scale, so that the image in the set area of the display panel can reach the target brightness and the target color coordinate by adjusting the first display data.
Fig. 2 is a schematic diagram of a display screen according to an embodiment of the present invention, and fig. 3 is a schematic diagram of another display screen according to an embodiment of the present invention. In both fig. 2 and fig. 3, the central circular area of the display panel is taken as the setting area a1, wherein the screen inside the setting area is taken as the setting screen, and the screen outside the setting area (corresponding to the area a2) is taken as the background screen. Taking any one of the display screens in fig. 2 and 3 as the first display screen, and taking the display panel shown in fig. 3 as the first display screen as an example, the data voltages corresponding to the sub-pixels in the setting area in fig. 3 are adjusted so that the screen in the setting area reaches the target luminance and the target color coordinates corresponding to the display gray scale.
as described above, one of the display screens shown in fig. 2 and 3 is schematically described as a first display screen, taking the display screen shown in fig. 3 as the first display screen and the display screen shown in fig. 2 as a second display screen as an example. Switching from the first display frame to the second display frame can be achieved by providing second display data to the display panel through the driving chip, and the second display data can include data voltages corresponding to sub-pixels in the display panel. Comparing the second display picture with the first display picture, the display gray scale corresponding to the picture (the setting picture) in the setting area is not changed, the display gray scale corresponding to the picture (the background picture) outside the setting area is changed, namely the background picture is changed, so that the currents flowing on the power line are different when the display panel displays the first display picture and the second display picture, namely the voltage drop on the power line is inconsistent, and after the first display picture is switched to the second display picture, the brightness and the color coordinate of the picture in the setting area corresponding to the same display gray scale are influenced and cannot reach the target brightness and the target color coordinate.
specifically, in the first display image, the set area can reach the target brightness by adjusting the data voltage, and the data voltage is not adjusted in the second display image. Since the luminance is positively correlated with the corresponding magnitude of the driving current of the sub-pixel, wherein the influence of the threshold voltage of the driving transistor is not considered, the calculation formula of the driving current is as follows:
I＝k(VDD-Vdata)2where I denotes a driving current, k is a constant, VDD denotes a power voltage supplied to the sub-pixel through the power line, and Vdata denotes a data voltage corresponding to the sub-pixel.
Since luminance is positively correlated with drive current, luminance is correlated with (VDD-Vdata)2And (4) positively correlating. Therefore, after switching from the first display screen to the second display screen, the brightness difference Δ L and (Δ VDD-Vdata) of the set region2Positive correlation, wherein Δ VDD is the difference between the power voltage received by any color sub-pixel in the set region when the display image in the set region under the first display image reaches the target brightness and the target color coordinate and the same color sub-pixel in the set region under the second display image, and the variation of the power voltage can be converted into the variation of the data voltage (Δ VDD-Vdata)2Can be converted into (VDD-delta Vdata)2Therefore, the luminance difference of the set region (VDD- Δ Vdata) can be obtained after the first display screen is switched to the second display screen2And (4) positively correlating. Therefore, compensation of different power supply voltages received by the sub-pixels due to different power line voltage drops under different display pictures can be realized by adjusting the data voltage, namely, the compensation of the data voltage is used for offsetting the upper voltage of the power supply line under different display picturesThe brightness caused by the power supply voltage difference received by the sub-pixels caused by different display images is reduced, so that the brightness of the images displaying the same gray scale in the set area is the same under different display images, even if the delta L is equal to 0. Since the different color sub-pixels contribute differently to the brightness of the displayed picture, in this step, optionally, determining the data voltage compensation value corresponding to the sub-pixel with the color which has the largest contribution to the brightness of the picture in the setting area according to the difference value between the target brightness and the brightness of the picture in the setting area under the second display picture, then, the data voltage compensation values corresponding to the sub-pixels of other colors are obtained according to a preset compensation proportion, wherein in the preset compensation proportion, the proportions corresponding to the sub-pixels of various colors are not completely the same, namely, the compensation values of the data voltages corresponding to the sub-pixels of the colors are not completely the same, compared with the prior art in which the compensation mode of the same data voltage compensation value is set, when the data voltage compensation value obtained by the method of the embodiment is compensated, the color coordinate of the picture in the set area of the display panel can more easily reach the target color coordinate corresponding to the display gray scale.
And 140, compensating the data voltage corresponding to the sub-pixel in the second display picture according to the data voltage compensation value.
Specifically, after the data voltage compensation value is determined, the data voltage of the sub-pixels under the second display picture is compensated according to the obtained data voltage compensation value corresponding to the sub-pixels, and the data voltage corresponding to the sub-pixels in the set area can be compensated specifically, so that the picture in the set area under the second display picture can also reach the target brightness and the target color coordinate, and after the display picture is changed, and further after the background picture is switched, the brightness and the color coordinate are not changed due to different voltage drops on a power line, and a good display effect is ensured.
In the test method for the display panel provided by this embodiment, the data voltage compensation values corresponding to the sub-pixels with different colors are determined according to the difference value between the target brightness of the picture in the setting area under the first display picture and the brightness of the picture in the setting area under the second display picture and the preset compensation proportion of the sub-pixels with different colors, so that the brightness difference caused by the power voltage difference received by the sub-pixels due to the different voltage drops on the power lines under different display pictures is offset by the compensation of the data voltage, and further, the brightness of the pictures with the same gray scale displayed in the setting area under different display pictures is the same; and the proportion corresponding to the sub-pixels of various colors is not completely the same in the preset compensation proportion, so that compared with the compensation mode of setting the same data voltage compensation value in the prior art, when the data voltage compensation value obtained according to the method of the embodiment is compensated, the color coordinate of the display panel can more easily reach the target color coordinate, and further, the color coordinate of the display image with the same display gray scale can be more approximately consistent under different display images, so that the display panel has better display effect.
Optionally, in the above embodiment, the preset compensation ratio is a light emitting efficiency ratio of the sub-pixels with different colors. Fig. 4 is a flowchart of another testing method for a display panel according to an embodiment of the present invention, and referring to fig. 4, the testing method for a display panel includes:
231, determining a first data voltage compensation value corresponding to the first color sub-pixel according to a difference value between the target brightness and the brightness of the second display frame;
optionally, the first color sub-pixel is a sub-pixel with the largest contribution to the brightness of the picture in the setting area. For example, when the frame in the setting area is a white frame, the first color sub-pixel may be a green sub-pixel. The first data voltage compensation value can still be obtained according to the first display frameAfter switching to the second display screen, the brightness difference of the set region is compared with (VDD-Delta Vdata)2A positive correlation is determined.
And the other color sub-pixels are sub-pixels of colors except the first color sub-pixel. Specifically, the color coordinates of the display screen are related to not only the luminance of each color sub-pixel but also the luminous efficiency corresponding to each color sub-pixel. The light emitting efficiencies corresponding to the sub-pixels with different colors are usually different, so that after the first data voltage compensation value corresponding to the sub-pixel with the first color is determined, the data voltage compensation values corresponding to the sub-pixels with the other colors are calculated according to the light emitting efficiency ratios of the sub-pixels with the other colors to the sub-pixel with the first color, so that the calculated data voltage compensation values correspond to the light emitting efficiencies, and the color coordinates of the display picture in the set area can be ensured to reach the target color coordinates.
Optionally, the step 232 includes:
△Vdata2＝(η2/η1)*△Vdata1，
where Δ Vdata2 represents a second data voltage compensation value corresponding to the second color sub-pixel, η 2 represents light emission efficiency corresponding to the second color sub-pixel, η 1 represents light emission efficiency corresponding to the first color sub-pixel, and Δ Vdata1 represents a first data voltage compensation value corresponding to the first color sub-pixel; the second color sub-pixel is any color sub-pixel except the first color sub-pixel.
Specifically, when Δ Vdata 2/. DELTA.vdata 1 ═ η 2/η 1, the color coordinates of the display panel can reach the target color coordinates. Since the light emitting efficiency corresponding to each color sub-pixel can be known in advance, the first data voltage compensation value corresponding to the first color sub-pixel is determined in step 231, so that the data voltage compensation value corresponding to the second color sub-pixel can be calculated according to the above-mentioned relational expression, and then after the second color sub-pixel in the set area is compensated by using the data voltage compensation value, when the second data voltage compensation value corresponding to the second color sub-pixel and the first data voltage compensation value corresponding to the first color sub-pixel can satisfy the above-mentioned relation, the display picture in the set area can reach the target color coordinate, and a good display effect is ensured.
And 240, compensating the data voltage corresponding to the sub-pixel in the second display picture according to the data voltage compensation value. The data voltage compensation value in this step includes a first data voltage compensation value and a second data voltage compensation value. This step is the same as step 140 in the above embodiment, and is not described herein again.
Optionally, the preset compensation proportion is a data voltage proportion corresponding to sub-pixels with different colors in the target color coordinate, and a picture in a set area in the target color coordinate reaches white balance. Fig. 5 is a flowchart of another testing method for a display panel according to an embodiment of the present invention, and referring to fig. 5, the testing method for a display panel includes: the method comprises the following steps:
optionally, the first color sub-pixel is a sub-pixel with the largest contribution to the brightness of the picture in the setting area. For example, when the frame in the setting area is a white frame, the first color sub-pixel may be a green sub-pixel. For the first data voltage compensation value, the brightness difference and the brightness difference of the set region can be obtained according to the switching from the first display picture to the second display picture(VDD-ΔVdata)2A positive correlation is determined.
and the other color sub-pixels are sub-pixels of colors except the first color sub-pixel. Specifically, under the first display picture, the corresponding data voltages in the set area are adjusted, so that after the picture in the set area reaches the target brightness and the target color coordinates, the data voltages corresponding to the sub-pixels with different colors in the set area can be obtained. Because the picture in the set area reaches white balance under the target color coordinate, after the data voltage compensation values corresponding to the other color sub-pixels are calculated according to the data voltage ratios of the other color sub-pixels and the first color sub-pixel under the target color coordinate and the first data voltage compensation value corresponding to the first color sub-pixel, the data voltage compensation value corresponding to each color sub-pixel can also meet the white balance ratio of the picture, and the color coordinate of the display picture in the set area can reach the target color coordinate.
Optionally, calculating data voltage compensation values corresponding to other color sub-pixels according to the first data voltage compensation value corresponding to the first color sub-pixel and the data voltage ratios of the other color sub-pixels to the first color sub-pixel in the target color coordinate includes:
△Vdata2＝(data2/data1)*△Vdata1，
wherein Δ Vdata2 represents a second data voltage compensation value corresponding to the second color sub-pixel, data2 represents a data voltage corresponding to the second color sub-pixel at the target color coordinate, data1 represents a data voltage corresponding to the first color sub-pixel at the target color coordinate, and Δ Vdata1 represents a data voltage compensation value corresponding to the first color sub-pixel; the second color sub-pixel is any color sub-pixel except the first color sub-pixel.
Specifically, when Δ Vdata 2/. DELTA.vdata 1 is data2/data1, the color coordinates of the display panel can reach the target color coordinates. After the picture in the set area reaches the target brightness and the target color coordinate, the data voltages corresponding to the different color sub-pixels in the set area can be acquired after the picture displayed in the set area reaches the target color coordinate, and the first data voltage compensation value corresponding to the first color sub-pixel is determined in step 331, so that the data voltage compensation value corresponding to the second color sub-pixel can be calculated according to the relational expression, and after the second color pixel in the set area is compensated by adopting the data voltage compensation value, the displayed picture in the set area can reach the target color coordinate, and a good display effect is ensured.
And 340, compensating the data voltage corresponding to the sub-pixel in the second display picture according to the data voltage compensation value. The data voltage compensation value in this step includes a first data voltage compensation value and a second data voltage compensation value. This step is the same as step 140 in the above embodiment, and is not described herein again.
On the basis of the above technical solution, optionally, the display pictures corresponding to the setting area in the first display picture and the second display picture are both white pictures.
Specifically, the display panel usually includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and in a white picture, the red sub-pixel, the green sub-pixel, and the blue sub-pixel all need to emit light, that is, corresponding data voltages need to be provided to the red sub-pixel, the green sub-pixel, and the blue sub-pixel, so that the target brightness and the target color coordinate of the white picture can be reached only when the brightness of the three sub-pixels reaches a set ratio. Therefore, the display picture corresponding to the set area is a white picture, so that when the test method of the display panel determines that the picture of the set area reaches the target brightness and the target chromaticity (after the data voltage corresponding to the sub-pixels in the set area of the first display picture is adjusted), the test method of the display panel according to the embodiment of the invention compares the picture of the set area with the white picture corresponding to the set area under the second display picture when the data voltage is not adjusted, and then the display picture of the set area of the display panel can reach the target brightness and white balance according to the brightness difference of the picture of the set area and the data voltage compensation quantity obtained by the preset compensation proportion, so that the brightness and the color coordinate can be unchanged when the display pictures are switched, and a good display effect is ensured.
Optionally, in the first display screen, the display screen corresponding to the set area is a black screen (corresponding to the display screen shown in fig. 3); in the second display screen, the display screen outside the setting region is a white screen (corresponding to the display screen shown in fig. 2);
or, in the first display screen, the display screen corresponding to the set region is a white screen (corresponding to the display screen shown in fig. 2); in the second display screen, the display screen outside the setting region is a black screen (corresponding to the display screen shown in fig. 3).
Specifically, under the first display picture and the second display picture, pictures outside the setting area are respectively black pictures or white pictures, or pictures outside the setting area are respectively white pictures or black pictures, so that the display gray scale difference of the display pictures outside the setting area under the first display picture and the second display picture is large, namely the display gray scale difference of the background picture of the setting area is large, the power supply voltage received by the sub-pixels with the same color under the first display picture and the second display picture is large, further, the data voltage compensation value obtained after the first display picture is switched to the second display picture can play a certain compensation role for the switching of most display pictures, and further, the effect of compensating the influence of the voltage drop on the power supply line on the display effect through the data voltage is achieved.
Optionally, in the first display picture, the display gray scale outside the set region is the minimum gray scale; under the second display picture, setting the display gray scale outside the area as the maximum gray scale; or setting the display gray scale outside the area as the maximum gray scale under the first display picture, and setting the display gray scale outside the area as the minimum gray scale under the second display picture; therefore, the difference between the display gray scales of the first display picture and the second display picture is maximum, the compensation quantity of the data voltage obtained after the first display picture is switched to the second display picture can play a certain compensation role in the switching of any display picture, and the effect of compensating the influence of the voltage drop on the power line on the display effect through the data voltage is achieved.
Fig. 6 is a flowchart of another testing method for a display panel according to an embodiment of the present invention, and referring to fig. 6, the testing method for a display panel includes:
if so,
if not, continuing to execute the subsequent step of controlling the display panel to display the second display picture and adjusting the picture in the setting area of the display panel to the target brightness and the target color coordinate (namely, skipping to the step 430) until whether the brightness and the color coordinate of the picture in the following setting area of the second display picture reach the target brightness and the target color coordinate or not.
Specifically, because the display gray scale of the picture in the setting area only corresponds to one gray scale under the first display picture and the second display picture, the obtained data voltage compensation amount is applicable to data voltage compensation of one display gray scale, and therefore, in step 460, full binding point gamma debugging is performed on the display model corresponding to the second display picture, and then after the data voltage compensation amount corresponding to the display gray scale of the picture in the setting area under the second display picture is determined, the data voltage compensation amounts under other binding point gray scales are also determined, so that when the display pictures are switched, the data voltage corresponding to each binding point gray scale is compensated, so that the changes of brightness and color coordinates caused by different voltage drops on the power line under each binding point gray scale can be compensated, and the display effect is improved.
In addition, in the test method of the display panel provided in this embodiment, whether the brightness and the color coordinate of the picture in the setting area reach the target brightness and the target color coordinate or not is determined by determining whether the brightness and the color coordinate of the picture in the setting area reach the target brightness and the target color coordinate or not in the second display picture, so that the full-binding-point gamma debugging is performed after the brightness and the color coordinate of the picture in the setting area reach the target brightness and the target color coordinate. The full-binding-point gamma debugging usually needs to determine the display model corresponding to the second display picture according to the data voltage compensation quantity corresponding to the display gray scale of the picture in the set area under the second display picture, and the set area is the data voltage compensation quantity corresponding to other display gray scales, so that the full-binding-point gamma debugging is carried out after the picture in the set area reaches the target brightness and the target color coordinate, the accuracy of the data voltage compensation quantity under other binding-point gray scales is favorably ensured, and the gamma debugging time is favorably saved.
It should be noted that, all the steps 410 to 440 are testing steps performed for displaying a certain gray scale in the setting area under the first display image and the second display image, and accordingly, only the data voltage compensation value corresponding to the certain gray scale can be obtained; when performing full-binding gamma debugging, the steps 410 to 440 may be repeatedly performed, and each time the steps 410 to 440 are performed, the data voltage compensation values corresponding to different binding gray scales may be obtained by controlling the picture of the setting region to respectively correspond to different binding gray scales.
Optionally, in the above embodiment, in step 130, the data voltage compensation values corresponding to the sub-pixels with different colors are determined to be replaced by a difference between the data voltage corresponding to the sub-pixel with the first color in the setting area in the first display image and the data voltage corresponding to the sub-pixel with the first color in the setting area in the second display image when the target brightness and the target color coordinate are reached in the setting area in the first display image, and the preset compensation ratios of the sub-pixels with different colors;
specifically, the data voltage provided by the driving chip to the display panel usually corresponds to a voltage code inside the driving chip, the driving chip can calculate a difference between a voltage code of the data voltage corresponding to the first color sub-pixel in the setting area when the target brightness and the target color coordinate are reached in the setting area and a voltage code of the data voltage corresponding to the first color sub-pixel in the setting area under the second display screen, and then directly determine the difference of the data voltage, determine the difference of the data voltage as a first data voltage compensation value corresponding to the first color sub-pixel, and determine a data voltage compensation value corresponding to the different color sub-pixel according to the first data voltage compensation amount and a preset compensation ratio of the different color sub-pixel (specifically, the process may be the same as the process of steps 232 and 332 in the above embodiments), that is, the step 130 is not required to determine the data voltage compensation amount through the relationship between the brightness and the data voltage, the method is simpler.
Optionally, in the above embodiment, in step 130, a data voltage compensation value corresponding to any color sub-pixel may be determined to be replaced according to a difference between a data voltage corresponding to any color sub-pixel in the setting region when the target brightness and the target color coordinate are reached in the setting region in the first display image and a data voltage corresponding to the same color sub-pixel in the setting region in the second display image;
as described above, the data voltage provided by the driving chip to the display panel usually corresponds to a voltage code inside the driving chip, and the driving chip can calculate the difference between the voltage code of the data voltage corresponding to any color sub-pixel in the setting area when the target brightness and the target color coordinate are reached in the setting area and the code of the data voltage corresponding to the same color sub-pixel in the setting area under the second display screen, and then directly determine the difference of the data voltage, and determine the difference of the data voltage as the data voltage compensation value corresponding to the corresponding color sub-pixel, so that the data voltage compensation amount is determined by the relationship between the brightness and the data voltage in step 130, and the data voltage compensation amount corresponding to the sub-pixels with different colors is not required to be obtained according to the preset compensation ratio, which is simpler and more convenient.
Optionally, after switching the picture of the display panel to the second display picture, the method includes: adjusting the picture in the set area of the display panel to the target brightness and the target color coordinate; in the above embodiment, in step 130, the data voltage compensation value corresponding to any color sub-pixel may be determined according to the difference between the target brightness of the image in the setting area and the data voltage corresponding to any color sub-pixel in the setting area before and after the target color coordinate is reached in the second display image.
Specifically, in the test method of the display panel of this embodiment, after the picture of the display panel is switched to the second display picture, the picture in the display panel is adjusted to the target brightness and the target color coordinate, and the data voltage compensation value corresponding to any color sub-pixel is determined according to the difference between the picture in the set area and the data voltage corresponding to any color sub-pixel in the set area before and after the picture in the set area reaches the target brightness and the target color coordinate, and it is not necessary to determine the data voltage compensation amount through the relationship between the brightness and the data voltage in step 130, and it is not necessary to obtain the data voltage compensation amount corresponding to different color sub-pixels according to the preset compensation ratio, so the method is simpler and more convenient.
Fig. 7 is a schematic structural diagram of a testing apparatus for a display panel according to an embodiment of the present invention, and referring to fig. 7, the testing apparatus for a display panel includes:
a control module 510, configured to control the display panel to display a first display image, and adjust an image in a setting area of the display panel to a target brightness and a target color coordinate;
the switching module 520 is configured to switch the frame of the display panel to a second display frame, where corresponding display gray scales of the frame in the setting area are the same in the first display frame and the second display frame; the display gray scales corresponding to the first display picture and the second display picture are different outside the set area;
a determining module 530, configured to determine data voltage compensation values corresponding to different color sub-pixels according to a difference between the target brightness and the brightness of the picture in the setting area in the second display picture and a preset compensation ratio of the different color sub-pixels; in the preset compensation proportion, the proportions corresponding to the sub-pixels of various colors are not completely the same;
the compensation module 540 is configured to compensate the data voltage corresponding to the sub-pixel in the second display frame according to the data voltage compensation value.
According to the testing device of the display panel, provided by the embodiment of the invention, the data voltage compensation values corresponding to the sub-pixels with different colors are determined by the determining module according to the difference value between the target brightness of the picture in the setting area under the first display picture and the brightness of the picture in the setting area under the second display picture and the preset compensation proportion of the sub-pixels with different colors, so that the brightness difference caused by the power voltage difference received by the sub-pixels due to different voltage drops on the power lines under different display pictures is counteracted by the compensation of the data voltage, and further, the brightness of the pictures with the same gray scale displayed in the setting area under different display pictures is the same; and the proportion corresponding to the sub-pixels of various colors is not completely the same in the preset compensation proportion, so that compared with the compensation mode of setting the same data voltage compensation value in the prior art, when the data voltage compensation value obtained according to the method of the embodiment is compensated, the color coordinate of the display panel can more easily reach the target color coordinate, and further, the color coordinate of the display image with the same display gray scale can be more approximately consistent under different display images, so that the display panel has better display effect.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for testing a display panel, comprising:
controlling the display panel to display a first display picture, and adjusting the picture in the set area of the display panel to the target brightness and the target color coordinate;
switching the picture of the display panel to a second display picture, wherein the display gray scales corresponding to the picture in the set area are the same under the first display picture and the second display picture; outside the set area, the display gray scales corresponding to the first display picture and the second display picture are different;
determining data voltage compensation values corresponding to the sub-pixels with different colors according to the difference value between the target brightness and the brightness of the picture in the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors; in the preset compensation proportion, the proportions corresponding to the sub-pixels of various colors are not completely the same;
and compensating the data voltage corresponding to the sub-pixel under the second display picture according to the data voltage compensation value.
2. The method for testing a display panel according to claim 1,
the preset compensation proportion is the luminous efficiency proportion of the sub-pixels with different colors, and the determining of the compensation data respectively corresponding to the sub-pixels with different colors according to the difference value between the target brightness and the brightness of the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors comprises the following steps:
determining a first data voltage compensation value corresponding to a first color sub-pixel according to the difference value of the target brightness and the brightness of the second display picture;
and calculating the data voltage compensation values corresponding to the sub-pixels of other colors according to the first data voltage compensation value and the luminous efficiency ratios of the sub-pixels of other colors and the first color sub-pixel.
3. The method for testing a display panel according to claim 2, wherein the calculating the data voltage compensation values corresponding to the other color sub-pixels according to the first data voltage compensation value and the light emitting efficiency ratios of the other color sub-pixels to the first color sub-pixel comprises:
△Vdata2＝(η2/η1)*△Vdata1，
where Δ Vdata2 represents a second data voltage compensation value corresponding to the second color sub-pixel, η 2 represents light emission efficiency corresponding to the second color sub-pixel, η 1 represents light emission efficiency corresponding to the first color sub-pixel, and Δ Vdata1 represents a first data voltage compensation value corresponding to the first color sub-pixel; the second color sub-pixel is any color sub-pixel except the first color sub-pixel.
4. The method for testing a display panel according to claim 1, wherein the preset compensation ratio is a data voltage ratio corresponding to sub-pixels of different colors in the target color coordinate, and a frame in the setting area in the target color coordinate reaches a white balance;
the determining the compensation data corresponding to the sub-pixels with different colors according to the difference value between the target brightness and the brightness of the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors comprises:
determining a first data voltage compensation value corresponding to a first color sub-pixel according to the difference value of the target brightness and the brightness of the second display picture;
calculating data voltage compensation values corresponding to other color sub-pixels according to a first data voltage compensation value corresponding to the first color sub-pixel and data voltage ratios of the other color sub-pixels to the first color sub-pixel under the target color coordinate;
preferably, the calculating the data voltage compensation value corresponding to the other color sub-pixel according to the first data voltage compensation value corresponding to the first color sub-pixel and the data voltage ratio of the other color sub-pixel to the first color sub-pixel in the target color coordinate includes:
△Vdata2＝(data2/data1)*△Vdata1，
wherein Δ Vdata2 represents a second data voltage compensation value corresponding to the second color sub-pixel, data2 represents a data voltage corresponding to the second color sub-pixel at the target color coordinate, data1 represents a data voltage corresponding to the first color sub-pixel at the target color coordinate, and Δ Vdata1 represents a data voltage compensation value corresponding to the first color sub-pixel; the second color sub-pixel is any color sub-pixel except the first color sub-pixel.
5. The method for testing a display panel according to claim 1, wherein corresponding display frames in the setting area are white frames in the first display frame and the second display frame.
6. The method for testing a display panel according to claim 5, wherein in the first display screen, a display screen corresponding to the outside of the setting area is a black screen; under the second display picture, the display picture outside the set area is a white picture;
or, under the first display picture, the display picture corresponding to the outside of the set area is a white picture; and under the second display picture, the display picture outside the set area is a black picture.
7. The method for testing a display panel according to claim 1, wherein in the first display frame, the display gray scale outside the setting region is the minimum gray scale; under the second display picture, the display gray scale outside the set area is the maximum gray scale;
or the display gray scale outside the set region is the maximum gray scale in the first display picture, and the display gray scale outside the set region is the minimum gray scale in the second display picture.
8. The method for testing a display panel according to claim 1, after the compensating the data voltage corresponding to the sub-pixel in the second display frame according to the data voltage compensation value, further comprising:
judging whether the brightness and the color coordinate of the picture in the set area reach the target brightness and the target color coordinate or not under the second display picture;
if so, carrying out full binding point gamma debugging on the display model corresponding to the second display picture, wherein the display model corresponding to the second display picture comprises a display picture with different display gray scale in the set area and display gray scale in the set area under the second display picture, and the display gray scale outside the set area is the same as the display gray scale outside the set area under the second display picture;
if not, continuing to execute the subsequent steps of controlling the display panel to display a second display picture and adjusting the picture in the set area of the display panel to the target brightness and the target color coordinate until whether the brightness and the color coordinate of the picture in the set area under the second display picture reach the target brightness and the target color coordinate.
9. The method as claimed in claim 1, wherein the determining of the data voltage compensation values corresponding to the sub-pixels with different colors according to the difference between the target brightness and the brightness of the frame in the setting area in the second display frame and the preset compensation ratio of the sub-pixels with different colors comprises determining the data voltage compensation values corresponding to the sub-pixels with different colors according to the difference between the target brightness and the brightness of the frame in the setting area in the second display frame and the preset compensation ratio of the sub-pixels with
Determining data voltage compensation value substitution corresponding to different color sub-pixels according to a difference value between a data voltage corresponding to a first color sub-pixel in the set area when the target brightness and the target color coordinate are reached in the set area under the first display picture and a data voltage corresponding to the first color sub-pixel in the set area under the second display picture, and a preset compensation proportion of the different color sub-pixels;
or, determining a data voltage compensation value corresponding to any color sub-pixel to replace according to a difference value between a data voltage corresponding to any color sub-pixel in the set area when the target brightness and the target color coordinate are reached in the set area in the first display picture and a data voltage corresponding to the same color sub-pixel in the set area in the second display picture;
or, after the switching the picture of the display panel to the second display picture, the method includes: adjusting the picture in the set area of the display panel to the target brightness and the target color coordinate; determining data voltage compensation values corresponding to the sub-pixels with different colors according to the difference value between the target brightness and the brightness of the picture in the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors, wherein the data voltage compensation values are obtained by calculating the difference value between the target brightness and the brightness of the picture in the set area under the second display picture according to the preset compensation proportion of the sub-pixels with different
And determining a data voltage compensation value substitution corresponding to any color sub-pixel according to the difference value between the target brightness of the picture in the set area and the data voltage corresponding to any color sub-pixel in the set area before and after the picture in the set area reaches the target color coordinate under the second display picture.
10. A testing apparatus for a display panel, comprising:
the control module is used for controlling the display panel to display a first display picture and adjusting the picture in the set area of the display panel to the target brightness and the target color coordinate;
the switching module is used for switching the picture of the display panel to a second display picture, wherein the display gray scales corresponding to the picture in the set area are the same under the first display picture and the second display picture; outside the set area, the display gray scales corresponding to the first display picture and the second display picture are different;
the determining module is used for determining data voltage compensation values corresponding to the sub-pixels with different colors according to the difference value between the target brightness and the brightness of the picture in the set area under the second display picture and the preset compensation proportion of the sub-pixels with different colors; in the preset compensation proportion, the proportions corresponding to the sub-pixels of various colors are not completely the same;
and the compensation module is used for compensating the data voltage corresponding to the sub-pixel under the second display picture according to the data voltage compensation value.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112614461A (en) * | 2020-12-21 | 2021-04-06 | 昆山国显光电有限公司 | Compensation method and device of display panel |
| CN112885303A (en) * | 2021-01-22 | 2021-06-01 | 绵阳京东方光电科技有限公司 | Image quality optimization method and image quality optimization module |
| CN112908240A (en) * | 2021-02-22 | 2021-06-04 | 昆山国显光电有限公司 | Gamma debugging method, device and equipment |
| CN114283731A (en) * | 2021-12-30 | 2022-04-05 | 昆山国显光电有限公司 | Pressure drop compensation method, apparatus, device, medium, and program product |
| CN114495839A (en) * | 2022-03-07 | 2022-05-13 | 芯颖科技有限公司 | Out-of-plane voltage drop compensation method and device for display panel |
| CN114882843A (en) * | 2022-06-17 | 2022-08-09 | 合肥维信诺科技有限公司 | Method and device for compensating brightness of display panel and computer readable storage medium |
| CN115050306A (en) * | 2022-08-16 | 2022-09-13 | 北京数字光芯集成电路设计有限公司 | Image correction method, preprocessing method thereof and image correction circuit |
| WO2022252259A1 (en) * | 2021-05-31 | 2022-12-08 | Tcl华星光电技术有限公司 | Display panel control method and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531050A (en) * | 2016-12-27 | 2017-03-22 | 上海天马有机发光显示技术有限公司 | Method, device and system for gray scale compensation of display panel |
| CN107134260A (en) * | 2017-06-30 | 2017-09-05 | 京东方科技集团股份有限公司 | A kind of display control method, device and display device |
| CN107657932A (en) * | 2017-11-17 | 2018-02-02 | 深圳市华星光电半导体显示技术有限公司 | The gray scale compensation data detection method of liquid crystal display panel |
| US20180342224A1 (en) * | 2015-09-23 | 2018-11-29 | Samsung Electronics Co., Ltd. | Electronic device, and display panel device correction method and system thereof |
| CN109979385A (en) * | 2019-05-15 | 2019-07-05 | 昆山国显光电有限公司 | Display driving method, display drive apparatus and the display device of display panel |
-
2020
- 2020-06-28 CN CN202010600407.3A patent/CN111754905B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180342224A1 (en) * | 2015-09-23 | 2018-11-29 | Samsung Electronics Co., Ltd. | Electronic device, and display panel device correction method and system thereof |
| CN106531050A (en) * | 2016-12-27 | 2017-03-22 | 上海天马有机发光显示技术有限公司 | Method, device and system for gray scale compensation of display panel |
| CN107134260A (en) * | 2017-06-30 | 2017-09-05 | 京东方科技集团股份有限公司 | A kind of display control method, device and display device |
| CN107657932A (en) * | 2017-11-17 | 2018-02-02 | 深圳市华星光电半导体显示技术有限公司 | The gray scale compensation data detection method of liquid crystal display panel |
| CN109979385A (en) * | 2019-05-15 | 2019-07-05 | 昆山国显光电有限公司 | Display driving method, display drive apparatus and the display device of display panel |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112614461B (en) * | 2020-12-21 | 2022-01-07 | 昆山国显光电有限公司 | Compensation method and device of display panel |
| CN112614461A (en) * | 2020-12-21 | 2021-04-06 | 昆山国显光电有限公司 | Compensation method and device of display panel |
| CN112885303A (en) * | 2021-01-22 | 2021-06-01 | 绵阳京东方光电科技有限公司 | Image quality optimization method and image quality optimization module |
| CN112908240B (en) * | 2021-02-22 | 2022-04-15 | 昆山国显光电有限公司 | Gamma debugging method, device and equipment |
| CN112908240A (en) * | 2021-02-22 | 2021-06-04 | 昆山国显光电有限公司 | Gamma debugging method, device and equipment |
| WO2022252259A1 (en) * | 2021-05-31 | 2022-12-08 | Tcl华星光电技术有限公司 | Display panel control method and display device |
| CN114283731A (en) * | 2021-12-30 | 2022-04-05 | 昆山国显光电有限公司 | Pressure drop compensation method, apparatus, device, medium, and program product |
| CN114283731B (en) * | 2021-12-30 | 2023-09-22 | 昆山国显光电有限公司 | Pressure drop compensation method, apparatus, device, medium and program product |
| CN114495839A (en) * | 2022-03-07 | 2022-05-13 | 芯颖科技有限公司 | Out-of-plane voltage drop compensation method and device for display panel |
| CN114495839B (en) * | 2022-03-07 | 2023-02-03 | 芯颖科技有限公司 | Out-of-plane voltage drop compensation method and device for display panel |
| CN114882843A (en) * | 2022-06-17 | 2022-08-09 | 合肥维信诺科技有限公司 | Method and device for compensating brightness of display panel and computer readable storage medium |
| CN114882843B (en) * | 2022-06-17 | 2023-07-14 | 合肥维信诺科技有限公司 | Method and device for compensating brightness of display panel and computer readable storage medium |
| CN115050306A (en) * | 2022-08-16 | 2022-09-13 | 北京数字光芯集成电路设计有限公司 | Image correction method, preprocessing method thereof and image correction circuit |
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