CN111223434B - Display panel color cast compensation method, compensation device and display device - Google Patents
Display panel color cast compensation method, compensation device and display device Download PDFInfo
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- 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
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Abstract
The invention discloses a display panel color cast compensation method, a compensation device and a display device. The display panel comprises a plane area and a bending area,the display panel comprises N sub-pixels with different colors; the method comprises the following steps: acquiring the average brightness of each color sub-pixel in a reference region, and calculating the brightness ratio of a single channel of each color sub-pixel in the reference region,
acquiring the average brightness of each color sub-pixel in the adjusting area; and calculating the brightness ratio of a single channel of each color sub-pixel in the adjusting area;
according to the alpha m,1 And said beta m,1 Determining a color sub-pixel with the maximum color cast degree in the adjusting area; and determining the compensation data of the color sub-pixel with the maximum color cast in the adjusting area. The embodiment of the invention can improve the color cast phenomenon of the bending area.
Description
Technical Field
The present invention relates to display technologies, and in particular, to a method and an apparatus for compensating color shift of a display panel, and a display apparatus.
Background
With the development of display technology, the application of display panels is becoming more and more extensive, and the requirements for display panels are becoming higher and higher accordingly.
However, the conventional display panel has a color shift problem, which seriously affects the application of the display panel.
Disclosure of Invention
The invention provides a display panel color cast compensation method, a compensation device and a display device, which are used for improving the color cast phenomenon of a display panel.
In a first aspect, an embodiment of the present invention provides a color shift compensation method for a display panel, where the display panel includes a planar area and a bending area, and the display panel includes N different color sub-pixels; n is an integer greater than or equal to 2; the method comprises the following steps: obtaining an average luminance of each color sub-pixel in a reference region, and calculating a luminance ratio of a single channel of each color sub-pixel in the reference region,
wherein alpha is m,1 Is the luminance ratio of a single channel of the mth color sub-pixel in the reference region,
m is more than or equal to 1 and less than or equal to the average brightness of the mth color sub-pixel in the reference areaN, the reference area is at least part of the plane area; acquiring the average brightness of each color sub-pixel in the adjusting area; and calculating a luminance ratio of a single channel for each color sub-pixel in the adjustment region,
wherein, beta m,1 For the luminance ratio of a single channel of the mth color sub-pixel in the adjustment region,
the average brightness of the mth color sub-pixel in the adjusting area is the average brightness of the mth color sub-pixel in the adjusting area, and the adjusting area is at least part of the bending area; according to the alpha m,1 And said beta m,1 Determining a color sub-pixel with the maximum color cast degree in the adjusting area; and determining the compensation data of the color sub-pixel with the maximum color cast in the adjusting area.
Optionally according to said alpha m,1 And said beta m,1 Determining the color sub-pixel with the largest degree of color cast in the adjustment region comprises: using said alpha m,1 And said beta m,1 Determining the color sub-pixel with the maximum color cast degree in the adjusting area; delta. for the preparation of a coating m ＝α m,1 -β m,1 (ii) a The δ in which the absolute value is largest m The corresponding sub-pixel is the color sub-pixel with the maximum color cast degree in the adjusting area.
Alternatively, when | δ m And when | ≦ D, not compensating the adjustment region, wherein D is a preset error, and preferably, the value of D is less than or equal to 0.01.
Optionally, the determining compensation data of a color sub-pixel with the largest degree of color cast in the adjustment region includes: according to | beta m,2 -α m,1 Less than or equal to D; determining compensation data of a color sub-pixel with the maximum color cast degree in the bending area; wherein, beta m,2 And D is a preset error, and is the brightness ratio of the single channel of the mth color sub-pixel in the adjustment area after color cast compensation.
Optionally, the supplementThe compensation data includes gray scale compensation data, which is determined using the following formula,
wherein, the Δ gray is the gray scale compensation data, and the γ is a gamma coefficient; the compensation brightness is determined using the following formula,
wherein, L' m Is the compensated brightness.
Optionally, after determining the compensation data of the color sub-pixel with the largest degree of color shift in the adjustment region, the method further includes: and establishing a lookup table by using the compensation data, and storing the lookup table in the display panel.
Optionally, the reference area is the entirety of the planar area.
In a second aspect, an embodiment of the present invention further provides a color shift compensation apparatus for a display panel, where the display panel includes a planar area and a bending area, and the display panel includes N different color sub-pixels; n is an integer greater than or equal to 2; the compensation device comprises: a first obtaining module for obtaining the average brightness of each color sub-pixel in the reference region and calculating the brightness ratio of single channel of each color sub-pixel in the reference region,
wherein alpha is m,1 Is the luminance ratio of a single channel of the mth color sub-pixel in the reference region,
m is more than or equal to 1 and less than or equal to N, which is the average brightness of the mth color sub-pixel in the reference area, and the reference area is at least part of the plane area; the second acquisition module is used for acquiring the average brightness of each color sub-pixel in the adjusting area; and calculating the adjustment regionThe luminance ratio of a single channel for each color sub-pixel in the domain,
wherein, beta m,1 For the luminance ratio of a single channel of the mth color sub-pixel in the adjustment region,
the average brightness of the mth color sub-pixel in the adjusting area is obtained; a first determination module for determining a m,1 And said beta m,1 Determining a color sub-pixel with the maximum color cast degree in the adjusting area; and the second determining module is used for determining the compensation data of the color sub-pixel with the maximum color cast degree in the adjusting area.
Optionally, the first determining module is configured to: using said alpha m,1 And said beta m,1 Determining the color sub-pixel with the maximum color cast degree in the adjusting area; delta m ＝α m,1 -β m,1 (ii) a The δ in which the absolute value is largest m The corresponding sub-pixel is the color sub-pixel with the maximum color cast degree in the adjusting area.
In a third aspect, an embodiment of the present invention further provides a display apparatus, including a storage module, where the storage module is configured to store the compensation data determined by using the method described in the first aspect.
The embodiment of the invention has the following beneficial effects: the color sub-pixel with the maximum color cast degree in the bending area can be compensated, the calculation amount of the display device is reduced, the color cast phenomenon can be effectively improved, and the display effect is improved.
Drawings
Fig. 1 is a flowchart of a color cast compensation method for a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a color shift compensation apparatus for a display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display device 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 mentioned in the background art, the color shift of the existing display panel is a problem, and the inventor has found through careful study that the reason for the technical problem is that: the display panel generally has a plane area and a bending area, when the display panel is viewed frontally, the angle of view of the bending area relative to the plane area is large, that is, the observation angle of a user is increased, the light intensity and the wavelength of emergent light of the bending area of the display panel are obviously changed, and the attenuation degrees of sub-pixels with different colors are inconsistent, so that the proportion of the brightness of the sub-pixels with different colors in the bending area is different from the proportion of the brightness of the sub-pixels with different colors in the plane area in light received by eyes of the user, thereby causing the color cast phenomenon in the bending area.
In order to solve the technical problems, the invention provides the following solutions:
fig. 1 is a flowchart of a color shift compensation method of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and referring to fig. 1 and fig. 2, the display panel includes a plane area a 0 And a bending region A 1 The display panel comprises N sub-pixels with different colors; n is an integer greater than or equal to 2; the display panel color cast compensation method comprises the following steps:
step S101, obtaining the average brightness of each color sub-pixel in the reference area, and calculating the single-channel brightness ratio of each color sub-pixel in the reference area,
wherein alpha is m,1 Is the luminance ratio of a single channel of the mth color sub-pixel in the reference region,
m is more than or equal to 1 and less than or equal to N, and the reference area is at least a partial plane area;
specifically, the display panel may include a planar area a 0 And a planar area A 0 Connected bending zone A 1 The reference area 201 is located in the plane area A 0 And the reference region 201 comprises N color sub-pixels, the reference region 201 can be used to represent the plane region A 0 The data acquisition quantity is reduced; n may be 3, for example, if the display panel includes three color sub-pixels of a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the total brightness of each color in the reference region 201 may be detected by using an optical device, and then the total brightness is divided by the number of the color sub-pixels in the reference region 201, so as to obtain the average brightness of the color sub-pixels; set in the reference region, the average brightness of the red sub-pixel is
The average brightness of the green sub-pixel is
The average brightness of the blue sub-pixel is
Luminance ratio of a single channel of a red sub-pixel
Luminance ratio of a single channel of a green sub-pixel
Luminance ratio of a single channel of a blue sub-pixel
Step S102, obtaining the average brightness of each color sub-pixel in the adjusting area; and calculating a single for each color sub-pixel in the adjustment regionThe luminance ratio of the channels;
wherein, beta m,1 To adjust the luminance ratio of a single channel of the mth color sub-pixel in the region,
the average brightness of the mth color sub-pixel in the bending area is shown;
illustratively, as shown in fig. 2, the adjustment region 202 may be a partial bending region, for example, the adjustment region 202 may be a region of the bending region with the most severe color shift, the adjustment region 202 may be obtained through testing or experience, and in other embodiments, the adjustment region 202 may also be a complete bending region. The total brightness of each color in the adjustment region 202 can be detected by optical equipment, and then the average brightness of the sub-pixels of the color can be obtained by dividing the total brightness by the number of the sub-pixels of the color in the adjustment region 202; let the average brightness of the red sub-pixels in the adjustment region 202 be
The average brightness of the green sub-pixel is
The average brightness of the blue sub-pixel is
The luminance ratio of a single channel of the red sub-pixel
Luminance ratio of a single channel of a green sub-pixel
Luminance ratio of a single channel of a blue sub-pixel
Wherein alpha is m,1 Brightness ratio of single channel of mth color sub-pixel in reference regionThat is, the single-channel luminance ratio, β, of the mth color sub-pixel in the reference region before color shift compensation of the display panel m,1 And adjusting the brightness ratio of the single channel of the mth color sub-pixel in the display panel adjusting area, namely, the brightness ratio of the single channel of the mth color sub-pixel in the display panel adjusting area before color cast compensation of the display panel.
Step S103, according to alpha m,1 And beta m,1 Determining a color sub-pixel with the maximum color cast degree in the adjusting area;
specifically, α is determined m,1 And beta m,1 Then, a color sub-pixel with the maximum degree of color cast in the adjustment region can be determined, for example, it can be determined that the red sub-pixel in the adjustment region is the sub-pixel with the maximum degree of color cast.
And step S104, determining the compensation data of the color sub-pixel with the maximum color cast degree in the adjusting area.
For example, after the sub-pixel with the maximum degree of color shift in the adjustment region is determined, if it is determined that the red sub-pixel in the adjustment region is the sub-pixel with the maximum degree of color shift, only the compensation data of the red sub-pixel, that is, only the compensation data of the sub-pixel with the maximum degree of color shift, may be determined, and the sub-pixel with the maximum degree of color shift in the adjustment region is compensated by using the compensation data, so that the calculation amount of the display device in calculating the compensation data may be reduced, power consumption may be reduced, and meanwhile, the color shift phenomenon in the adjustment region may be greatly improved, and the display effect may be improved.
In the technical solution of this embodiment, the adopted display panel color shift compensation method includes obtaining an average luminance of each color sub-pixel in the reference region, and calculating a single-channel luminance ratio of each color sub-pixel in the reference region
Wherein alpha is m,1 Is the luminance ratio of a single channel of the mth color sub-pixel in the reference region,
m is more than or equal to 1 and less than or equal to N and is the average brightness of the mth color sub-pixel in the reference areaThe area is at least part of the plane area; acquiring the average brightness of each color sub-pixel in the adjusting area; and calculates the luminance ratio of a single channel for each color sub-pixel in the adjustment region,
wherein, beta m,1 To adjust the luminance ratio of a single channel of the mth color sub-pixel in the region,
adjusting the average brightness of the m color sub-pixels in the area; according to alpha m,1 And beta m,1 Determining a color sub-pixel with the maximum color cast degree in the adjusting area; and determining the compensation data of the color sub-pixel with the maximum color cast in the adjusting area. The color sub-pixel with the maximum color cast degree in the adjusting area can be compensated, the color cast phenomenon can be effectively improved while the calculation amount of the display device is reduced, and the display effect is improved.
It should be noted that, when the display panel includes three color sub-pixels, namely, a red sub-pixel, a green sub-pixel and a blue sub-pixel, the attenuation degrees of the light emitted by the red sub-pixel, the green sub-pixel and the blue sub-pixel are different under a large viewing angle, and only one sub-pixel has the largest degree of color cast; in some other embodiments, there may be two or more kinds of the sub-pixels with the largest degree of color shift, and in this case, the two or more kinds of the sub-pixels with the largest degree of color shift may be subjected to color shift compensation.
Alternatively, according to α m,1 And beta m,1 Determining the color sub-pixel with the largest degree of color cast in the adjustment region comprises: using alpha m,1 And beta m,1 Determining a color sub-pixel with the maximum color cast degree in the adjusting area according to the difference value; delta m ＝α m,1 -β m,1 (ii) a Wherein δ having the largest absolute value m The corresponding sub-pixel is the sub-pixel with the largest color cast in the adjusting area.
In particular, due to α m,1 Representing the luminance ratio, beta, of a single channel of the mth color sub-pixel in the reference region m,1 Representing the luminance ratio of a single channel of the mth color sub-pixel in the adjustment region when delta m When the absolute value of the color sub-pixel is maximum, the difference between the proportion of the luminous brightness of the color sub-pixel in the adjusting area and the proportion of the luminous brightness of the color sub-pixel in the reference area is large, namely, the color cast is the most serious, the calculated amount is small, the color sub-pixel with the maximum color cast degree in the adjusting area can be simply and efficiently determined, the operation cost of the display device is favorably further reduced, and the power consumption is further reduced.
Alternatively, when | δ m And when the | is less than or equal to D, compensating the adjustment area, wherein D is a preset error.
Specifically, when | δ m When | ≦ D, it indicates that the degree of color shift in the adjustment region is small at this time, and it is not necessary to perform color shift compensation on the adjustment region, thereby further reducing the calculation amount of the display device and reducing the power consumption.
Optionally, the determining the compensation data of the color sub-pixel with the largest degree of color cast in the adjustment region comprises: according to | beta m,2 -α m,1 Less than or equal to D; determining the compensation data of the color sub-pixel with the maximum color cast in the bending area, wherein beta m,2 The single-channel brightness ratio after color cast compensation is carried out on the mth color sub-pixel of the adjusting area.
For example, after determining the sub-pixel with the most serious degree of color shift in the adjustment region, if the sub-pixel with the most serious degree of color shift in the red sub-pixel in the adjustment region is determined, the sub-pixel with the most serious degree of color shift can be determined according to | β | 1,2 -α 1,1 And determining the compensation data of the red sub-pixel if the | is less than or equal to D. I.e. using beta 1,2 As the brightness ratio of a single channel of the red sub-pixel in the adjustment region after color shift compensation, when beta 1,2 Luminance ratio alpha of single channel with red sub-pixel in reference area 1,1 When the difference value of the brightness difference is less than the preset error D, the percentage of the brightness of the red sub-pixel in the adjustment area in the picture observed by the user to the total brightness of the adjustment area is closer to the percentage of the brightness of the red sub-pixel in the reference area to the total brightness of the reference area, and no obvious color cast phenomenon is generated, namely beta can be adopted 1,2 The corresponding gray scale compensation data is used as compensation data.
Optionally, the value of D is equal to or less than 0.01.
Specifically, if the value of D is too large, after compensating the subpixel with the most severe color shift in the adjustment area, the subpixel still has a certain color shift phenomenon with respect to the planar area, that is, the color shift compensation effect is not good; by setting the value of D to be less than or equal to 0.01, the color cast phenomenon of the sub-pixel relative to the plane area is not obvious after the sub-pixel with the most serious color cast in the adjusting area is compensated, so that the color cast phenomenon is greatly improved, and the display effect is improved.
Alternatively, the compensation data includes gray scale compensation data, the gray scale compensation data is determined using the following formula,
wherein, Δ gray is gray level compensation data, γ is gamma coefficient, the compensation brightness is determined by the following formula,
wherein, L' m To compensate for the brightness.
Specifically, the compensation luminance L 'required for the sub-pixel with the largest degree of color shift in the adjustment region may be determined first' m Which can utilize
To determine; then converting the compensation brightness into gray scale compensation data, and adjusting the gray scale data received in the area as the gray scale compensation data when the display panel needs to display; it should be noted that, in this embodiment, the display panel is used for displaying 0 to 255 gray scales as an example for description, the compensation brightness and the gray scale compensation data are obtained by calculating under the 255 gray scales, and the chip in the display device can directly calculate the gray scale compensation data under the remaining gray scales according to an algorithm, so that color cast does not occur in the adjustment area relative to the planar area under all the gray scales.
Optionally, after determining the compensation data of the color sub-pixel with the largest degree of color shift in the adjustment region, the method further includes: and establishing a lookup table by using the compensation data, and storing the lookup table in the display panel.
Specifically, the lookup table is stored in the display panel, when the display panel needs to display a corresponding gray scale, the lookup table can be directly used for determining the compensation data of the adjustment area, the compensation data is used for displaying, the adjustment area does not have a color cast problem relative to the plane area, the lookup table is simple, the lookup table is easy to implement, the operation time is favorably shortened, and the power consumption is further reduced.
Optionally, the reference area is the entirety of the planar area.
By means of the arrangement, after color shift compensation is carried out on the sub-pixel with the most serious color shift degree in the adjusting area, the single-channel brightness ratio of the color sub-pixel in the adjusting area is approximately consistent with the single-channel brightness ratio of the color sub-pixel in the plane area, and the color shift compensation effect is better.
Fig. 3 is a schematic structural diagram of a color shift compensation device of a display panel according to an embodiment of the present invention, and referring to fig. 3, the color shift compensation device of the display panel includes: a first obtaining module 301, configured to obtain an average luminance of each color sub-pixel in the reference region, and calculate a luminance ratio of a single channel of each color sub-pixel in the reference region,
wherein alpha is m,1 Is the luminance ratio of a single channel of the mth color sub-pixel in the reference region,
m is more than or equal to 1 and less than or equal to N, and the reference area is at least a partial plane area;
specifically, the display panel may include a planar area a 0 And a planar area A 0 Connected bending zone A 1 The reference area 201 is located in the plane area A 0 And the reference region 201 includes N color sub-pixels, the reference region 201 can be used to represent the plane region A 0 The data acquisition quantity is reduced; n can be 3, for example, if the display panel comprises three color sub-pixels of red sub-pixel, green sub-pixel and blue sub-pixel, the method can be utilizedThe optical device detects the total brightness of each color in the reference region 201, and then divides the total brightness by the number of the sub-pixels of the color in the reference region 201 to obtain the average brightness of the sub-pixels of the color; set in the reference region, the average brightness of the red sub-pixel is
The average brightness of the green sub-pixel is
The average brightness of the blue sub-pixel is
Luminance ratio of a single channel of a red sub-pixel
Luminance ratio of a single channel of a green sub-pixel
Luminance ratio of a single channel of a blue sub-pixel
A second obtaining module 302, configured to obtain an average luminance of each color sub-pixel in the adjustment region; and calculating the brightness ratio of a single channel of each color sub-pixel in the adjustment region
Wherein, beta m,1 To adjust the luminance ratio of a single channel of the mth color sub-pixel in the region,
the average brightness of the mth color sub-pixel in the bending area is shown;
illustratively, the total brightness of each color in the adjustment region can be detected by an optical device, and then divided by the number of the color sub-pixels in the adjustment region to obtain the average of the color sub-pixelsBrightness; let the average brightness of the red sub-pixel in the adjustment region be
The average brightness of the green sub-pixel is
The average brightness of the blue sub-pixel is
Luminance ratio of a single channel of a red sub-pixel
Luminance ratio of a single channel of a green sub-pixel
Luminance ratio of a single channel of a blue sub-pixel
A first determining module 303 for determining a m,1 And beta m,1 Determining a color sub-pixel with the maximum color cast degree in the adjusting area;
specifically, α is determined m,1 And beta m,1 Then, a color sub-pixel with the maximum degree of color cast in the adjustment region can be determined, for example, it can be determined that the red sub-pixel in the adjustment region is the sub-pixel with the maximum degree of color cast.
The second determining module 304 determines the compensation data of the sub-pixel with the largest degree of color cast in the adjustment region.
For example, after the sub-pixel with the maximum degree of color shift in the adjustment region is determined, if it is determined that the red sub-pixel in the adjustment region is the sub-pixel with the maximum degree of color shift, only the compensation data of the red sub-pixel, that is, only the compensation data of the sub-pixel with the maximum degree of color shift, may be determined, and the sub-pixel with the maximum degree of color shift in the adjustment region is compensated by using the compensation data, so that the calculation amount of the display device in calculating the compensation data may be reduced, power consumption may be reduced, and meanwhile, the color shift phenomenon in the bending region may be greatly improved, and the display effect may be improved.
Optionally, the first determining module is configured to: using alpha m,1 And said beta m,1 Determining the color sub-pixel with the maximum color cast degree in the adjusting area; delta m ＝α m,1 -β m,1 (ii) a The δ in which the absolute value is largest m The corresponding sub-pixel is the color sub-pixel with the maximum color cast degree in the adjusting area.
In particular, due to α m,1 Representing the luminance ratio, beta, of a single channel of the mth color sub-pixel in the reference region m,1 Represents the brightness ratio of a single channel of the mth color sub-pixel in the bending region when delta m When the absolute value of the color sub-pixel is maximum, the difference between the proportion of the luminous brightness of the color sub-pixel in the adjusting area and the proportion of the luminous brightness of the color sub-pixel in the reference area is large, namely, the color cast is the most serious, the calculated amount is small, the color sub-pixel with the maximum color cast degree in the adjusting area can be simply and efficiently determined, the operation cost of the display device is favorably further reduced, and the power consumption is further reduced.
Fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 4, the display device 20 includes a storage module, where the storage module is configured to store compensation data determined by a color shift compensation method for a display panel according to any embodiment of the present invention. The display panel may be a mobile phone, a tablet, a computer, or a wearable device, and therefore, the display panel includes the compensation data determined by the display panel color shift compensation method provided by any embodiment of the present invention, and therefore, the display panel also has the same beneficial effects, and further description is omitted here.
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 (12)
1. The display panel color cast compensation method is characterized in that the display panel comprises a plane area and a bending area, and the display panel comprises N sub-pixels with different colors; n is an integer greater than or equal to 2;
the method comprises the following steps:
acquiring the average brightness of each color sub-pixel in a reference region, and calculating the brightness ratio of a single channel of each color sub-pixel in the reference region,
wherein alpha is m,1 Is the luminance ratio of a single channel of the mth color sub-pixel in the reference region,
m is more than or equal to 1 and less than or equal to N, which is the average brightness of the mth color sub-pixel in the reference area, and the reference area is at least part of the plane area;
acquiring the average brightness of each color sub-pixel in the adjusting area; and calculating a luminance ratio of a single channel of each color sub-pixel in the adjustment region,
wherein beta is m,1 For the luminance ratio of a single channel of the mth color sub-pixel in the adjustment region,
the average brightness of the mth color sub-pixel in the adjusting area is the average brightness of at least part of the bending area;
according to the alpha m,1 And said beta m,1 Determining a color sub-pixel with the maximum color cast degree in the adjusting area;
and determining the compensation data of the color sub-pixel with the maximum color cast in the adjusting area.
2. The method of claim 1,
according to the alpha m,1 And said beta m,1 Determining the color sub-pixel with the largest degree of color cast in the adjustment region comprises:
using said alpha m,1 And said beta m,1 Determining the color sub-pixel with the maximum color cast degree in the adjusting area; delta m ＝α m,1 -β m,1 (ii) a The δ in which the absolute value is largest m The corresponding sub-pixel is the color sub-pixel with the maximum color cast degree in the adjusting area.
3. The method of claim 2,
when is delta m And when the | is less than or equal to D, the adjustment area is not compensated, wherein the D is a preset error.
4. The method of claim 3,
the value of D is less than or equal to 0.01.
5. The method of claim 2, wherein the determining the compensation data for the color sub-pixel with the largest degree of color shift in the adjustment region comprises:
according to | beta m,2 -α m,1 Less than or equal to D; determining compensation data of a color sub-pixel with the maximum color cast degree in the bending area; wherein, beta m,2 And D is a preset error, and is the brightness ratio of the single channel of the mth color sub-pixel in the adjustment area after color cast compensation.
6. The method of claim 5,
the value of D is less than or equal to 0.01.
7. The method of claim 5, wherein the compensation data comprises gray scale compensation data, the gray scale compensation data determined using the formula,
8. The method of claim 1, wherein determining the compensation data for the color sub-pixel with the largest degree of color shift in the adjustment region further comprises:
and establishing a lookup table by using the compensation data, and storing the lookup table in the display panel.
9. The method of claim 1, wherein the reference area is the entirety of the planar area.
10. The color cast compensation device for the display panel is characterized in that the display panel comprises a plane area and a bending area, and the display panel comprises N sub-pixels with different colors; n is an integer greater than or equal to 2;
the compensation device comprises:
a first obtaining module, configured to obtain an average luminance of each color sub-pixel in a reference region, and calculate a luminance ratio of a single channel of each color sub-pixel in the reference region,
wherein alpha is m,1 Is the luminance ratio of a single channel of the mth color sub-pixel in the reference region,
m is more than or equal to 1 and less than or equal to N, which is the average brightness of the mth color sub-pixel in the reference area, and the reference area is at least part of the plane area;
the second acquisition module is used for acquiring the average brightness of each color sub-pixel in the adjustment area; and calculating a luminance ratio of a single channel for each color sub-pixel in the adjustment region,
wherein, beta m,1 For the brightness ratio of a single channel of the mth color sub-pixel in the adjustment region,
the average brightness of the mth color sub-pixel in the adjusting area is the average brightness of the mth color sub-pixel in the adjusting area, and the adjusting area is at least part of the bending area;
a first determination module for determining a m,1 And said beta m,1 Determining a color sub-pixel with the maximum color cast degree in the adjusting area;
and the second determining module is used for determining the compensation data of the color sub-pixel with the maximum color cast degree in the adjusting area.
11. The compensation apparatus of claim 10, wherein the first determination module is configured to:
using said alpha m,1 And said beta m,1 Determining the color sub-pixel with the maximum color cast degree in the adjusting area; delta m ＝α m,1 -β m,1 (ii) a The δ in which the absolute value is largest m The corresponding sub-pixel is the color sub-pixel with the maximum color cast degree in the adjusting area.
12. A display device comprising a storage module for storing compensation data determined using the method of any one of claims 1-9.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108122544A (en) * | 2017-12-18 | 2018-06-05 | 惠科股份有限公司 | Display device and its driving method |
| CN109003583A (en) * | 2018-09-18 | 2018-12-14 | 惠科股份有限公司 | Display device and its driving method |
| CN109036297A (en) * | 2018-09-18 | 2018-12-18 | 惠科股份有限公司 | Display device and its driving method |
| CN110264950A (en) * | 2019-06-28 | 2019-09-20 | 云谷（固安）科技有限公司 | Brightness adjusting method and display device |
Family Cites Families (4)
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| CN109300434B (en) * | 2018-10-31 | 2021-01-15 | 上海天马微电子有限公司 | Display device and adjusting method of viewing angle chromatic aberration thereof |
| CN110197635B (en) * | 2019-06-04 | 2022-08-12 | 厦门天马微电子有限公司 | Display device, driving method thereof and electronic equipment |
| CN110599943B (en) * | 2019-10-25 | 2023-05-30 | 京东方科技集团股份有限公司 | Display panel pixel compensation method and compensation device and display panel |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108122544A (en) * | 2017-12-18 | 2018-06-05 | 惠科股份有限公司 | Display device and its driving method |
| CN109003583A (en) * | 2018-09-18 | 2018-12-14 | 惠科股份有限公司 | Display device and its driving method |
| CN109036297A (en) * | 2018-09-18 | 2018-12-18 | 惠科股份有限公司 | Display device and its driving method |
| CN110264950A (en) * | 2019-06-28 | 2019-09-20 | 云谷（固安）科技有限公司 | Brightness adjusting method and display device |
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