CN112863422B - Time schedule controller and display panel - Google Patents
Time schedule controller and display panel Download PDFInfo
- Publication number
- CN112863422B CN112863422B CN202110193907.4A CN202110193907A CN112863422B CN 112863422 B CN112863422 B CN 112863422B CN 202110193907 A CN202110193907 A CN 202110193907A CN 112863422 B CN112863422 B CN 112863422B
- Authority
- CN
- China
- Prior art keywords
- gray scale
- value
- scale
- gray
- compensation table
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G09G3/2003—Display of colours
-
- 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
Abstract
The application discloses a time schedule controller and a display panel, wherein the time schedule controller comprises a storage module, an acquisition module, a calculation module and a generation module; the storage module is used for storing a corresponding initial gray scale compensation table and a corresponding scale factor; the acquisition module is connected with the storage module and used for acquiring the initial gray scale value and the average gray scale value of the corresponding sub-pixel according to the initial gray scale compensation table; the calculation module is connected with the acquisition module and used for determining a target gray-scale value of the corresponding sub-pixel according to the initial gray-scale value, the average gray-scale value and the scale factor; and the generating module is connected with the calculating module and the storage module and is used for generating and outputting a corresponding target gray scale compensation table to the storage module according to the target gray scale value of the corresponding sub-pixel. After gray scale compensation is carried out on the initial gray scale compensation table, a corresponding target gray scale compensation table is obtained, and the target gray scale compensation table can be used for relieving or eliminating visual effect difference caused when the display panel is watched at different visual angles.
Description
Technical Field
The application relates to the technical field of display, in particular to a time schedule controller and a display panel.
Background
As shown in fig. 1, when the same screen displayed on the display panel of the same model is observed at different viewing angles, the same screen has different degrees of Demura (uniform) visual effect. The current Demura algorithm and judging (JND, Just Noticeable Difference) mode only considers the effect of the front view angle, so that the effect of the front view condition a has no obvious Lens mura (vertical unevenness) according to the actual judging result and the like, and the Demura effect is better; however, side-looking condition b has a severe Lens mura effect and a poor Demura effect. The JND can be the smallest perceptible difference and is used for representing the largest image distortion which can not be perceived by human eyes, and the tolerance of the human eyes to image change is embodied.
Therefore, in consideration of the practical application of the display panel, the front viewing angle effect of the display panel should be ensured, and the side viewing angle effect of the display panel should be satisfied to improve the ornamental quality.
It should be noted that the above description of the background art is only for the convenience of clear and complete understanding of the technical solutions of the present application. The technical solutions referred to above are therefore not considered to be known to the person skilled in the art, merely because they appear in the background of the present application.
Disclosure of Invention
The application provides a time schedule controller and a display panel, which can be used for relieving the technical problem of visual effect difference caused when a display screen is watched at different visual angles.
In a first aspect, the present application provides a timing controller, which includes a storage module, an obtaining module, a calculating module, and a generating module; the storage module is used for storing a corresponding initial gray scale compensation table and a corresponding scale factor; the acquisition module is connected with the storage module and used for acquiring the initial gray scale value and the average gray scale value of the corresponding sub-pixel according to the initial gray scale compensation table; the calculation module is connected with the acquisition module and used for determining a target gray-scale value of the corresponding sub-pixel according to the initial gray-scale value, the average gray-scale value and the scale factor; and the generating module is connected with the calculating module and the storage module and is used for generating and outputting a corresponding target gray scale compensation table to the storage module according to the target gray scale value of the corresponding sub-pixel.
Based on the first aspect, in a first implementation manner of the first aspect, the obtaining module obtains, according to the initial gray scale compensation table, an accumulated sum of initial gray scale values of each sub-pixel in the initial gray scale compensation table, and a sum of numbers of initial gray scale values of each sub-pixel in the initial gray scale compensation table.
In a second implementation manner of the first aspect, based on the first implementation manner of the first aspect, the obtaining module obtains the average gray scale value according to a division result of the accumulated sum and the number sum.
Based on the first aspect, in a third implementation manner of the first aspect, the calculating module obtains the gray scale base value to be compensated according to a difference result between the initial gray scale value and the average gray scale value.
Based on the third implementation manner of the first aspect, in the fourth implementation manner of the first aspect, the calculation module obtains the gray scale value to be compensated according to a multiplication result of the gray scale base value to be compensated and the scale factor.
Based on the fourth implementation manner of the first aspect, in a fifth implementation manner of the first aspect, the calculation module obtains the target gray-scale value according to an addition result of the gray-scale value to be compensated and the average gray-scale value.
In a sixth embodiment of the first aspect, the scale factor is a decimal number greater than 0 and less than 1.
Based on the sixth implementation manner of the first aspect, in the seventh implementation manner of the first aspect, the value range of the scaling factor is a decimal that is greater than or equal to 0.3 and less than or equal to 0.9.
In an eighth implementation form of the first aspect as such or according to the seventh implementation form of the first aspect, the scaling factor is 0.4.
In a second aspect, the present application provides a display panel, which includes the timing controller in any of the above embodiments; the time schedule controller executes a target gray scale compensation table to correspondingly compensate at least one specific gray scale of at least one color channel.
According to the time schedule controller and the display panel, after gray scale compensation is carried out on the initial gray scale compensation table, a corresponding target gray scale compensation table is obtained, and the target gray scale compensation table can be used for relieving or eliminating visual effect differences caused when the display panel is watched at different visual angles.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of different viewing angles in a conventional technical solution.
Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of the timing controller in fig. 2.
Fig. 4 is a schematic flowchart of a gray scale compensation method according to an embodiment of the present disclosure.
Fig. 5 is a schematic flow chart illustrating a gray scale compensation method according to an embodiment of the present application.
Fig. 6 is a schematic diagram of a gray scale before improvement according to an embodiment of the present application.
Fig. 7 is a schematic diagram of an improved variation of gray scale with width according to an embodiment of the present application.
Fig. 8 is a schematic diagram illustrating an influence of a scale factor on a visual effect according to an embodiment of the present application.
Fig. 9 is a schematic diagram illustrating comparison of JND values under different viewing angles according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 2 to 9, as shown in fig. 2, the present embodiment provides a display panel 10, which includes a timing controller 100; the timing controller 100 executes a target gray scale compensation table to compensate at least one specific gray scale of at least one color channel correspondingly.
For example, the display panel 10 has a red channel, the first specific gray scale of the red channel may be, but is not limited to, 25 gray scales, and the timing controller 100 may compensate the first specific gray scale by executing a corresponding target gray scale compensation table. The second specific gray scale of the red channel may be, but is not limited to, 60 gray scales, and the timing controller 100 may compensate the second specific gray scale by executing a corresponding target gray scale compensation table. The third specific gray level of the red channel may be, but is not limited to, 128 gray levels, and the timing controller 100 may compensate the third specific gray level by executing a corresponding target gray level compensation table.
It should be noted that the display panel 10 can generate other corresponding gray levels required for display through the first specific gray level, the second specific gray level and the third specific gray level, for example, a 0 gray level of a red channel, or a 255 gray level of the red channel, and the like, and the remaining gray levels of the red channel.
For example, the display panel 10 has a green channel, the fourth specific gray scale of the green channel can be, but is not limited to, 25 gray scales, and the timing controller 100 can compensate the fourth specific gray scale by executing a corresponding target gray scale compensation table. The fifth specific gray scale of the green channel may be, but is not limited to, 60 gray scales, and the timing controller 100 may compensate the fifth specific gray scale by executing a corresponding target gray scale compensation table. The sixth specific gray level of the green channel may be, but is not limited to, 128 gray levels, and the timing controller 100 may compensate the sixth specific gray level by executing a corresponding target gray level compensation table.
It should be noted that the display panel 10 can generate other corresponding gray scales required for display, for example, a 0 gray scale of a green channel or a 255 gray scale of a green channel, and the remaining gray scales of the green channel, through the fourth specific gray scale, the fifth specific gray scale and the sixth specific gray scale.
For example, the display panel 10 has a blue channel, the seventh specific gray scale of the blue channel may be, but is not limited to, 25 gray scales, and the timing controller 100 may compensate the seventh specific gray scale by executing a corresponding target gray scale compensation table. The eighth specific gray scale of the blue channel may be, but is not limited to, 60 gray scales, and the timing controller 100 may compensate the eighth specific gray scale by executing a corresponding target gray scale compensation table. The ninth specific gray scale of the blue channel may be, but is not limited to, 128 gray scales, and the timing controller 100 may compensate the ninth specific gray scale by executing a corresponding target gray scale compensation table.
It should be noted that the display panel 10 can generate other corresponding gray scales required for display, for example, a 0 gray scale of a blue channel or a 255 gray scale of the blue channel, and the remaining gray scales of the blue channel through the seventh specific gray scale, the eighth specific gray scale and the ninth specific gray scale.
For example, the display panel 10 has a white channel, the tenth specific gray scale of the white channel may be, but is not limited to, 25 gray scales, and the timing controller 100 may compensate the tenth specific gray scale by executing a corresponding target gray scale compensation table. The eleventh specific gray scale of the white channel may be, but not limited to, 60 gray scales, and the timing controller 100 may compensate the eleventh specific gray scale by executing a corresponding target gray scale compensation table. The twelfth specific gray scale of the white channel may be, but is not limited to, 128 gray scales, and the timing controller 100 may compensate the twelfth specific gray scale by executing a corresponding target gray scale compensation table.
The display panel 10 can generate other corresponding gray scales required for displaying, for example, a 0 gray scale of a white channel or a 255 gray scale of the white channel, which are the remaining gray scales of the white channel, according to the tenth specific gray scale, the eleventh specific gray scale and the twelfth specific gray scale.
It can be understood that the display panel 10 provided in the present application, which compensates the specific gray levels of the different color channels through the target gray level compensation table, can be used to alleviate or eliminate the difference in visual effect caused when the display panel 10 is viewed at different viewing angles.
As shown in fig. 3, in one embodiment, the timing controller 100 includes a storage module 110, an obtaining module 120, a calculating module 130, and a generating module 140. The storage module 110 is used for storing the corresponding initial gray scale compensation table and the corresponding scale factor. The obtaining module 120 is connected to the storage module 110, and is configured to obtain an initial gray scale value and an average gray scale value of the corresponding sub-pixel according to the initial gray scale compensation table. The calculating module 130 is connected to the obtaining module 120, and is configured to determine a target gray scale value of the corresponding sub-pixel according to the initial gray scale value, the average gray scale value, and the scale factor. And the generating module 140 is connected to the calculating module 130 and the storage module 110, and is configured to generate and output a corresponding target gray-scale compensation table to the storage module 110 according to the target gray-scale value of the corresponding sub-pixel.
In the present embodiment, in the process of generating the corresponding target gray scale compensation table from the initial gray scale compensation table, the storage locations of the initial gray scale values or the target gray scale values of the sub-images in the corresponding compensation table are the same, and are not changed, but are changed only by the corresponding gray scale values. In the storage module 110, the target gray scale compensation table is always stored in the original position of the initial gray scale compensation table, that is, when the scale factor is adjusted, the newly obtained target gray scale compensation table is always used to replace the existing initial gray scale compensation table.
It can be understood that, the timing controller 100 provided in the present application obtains a corresponding target gray scale compensation table by performing gray scale compensation on the initial gray scale compensation table, and the target gray scale compensation table can be used to alleviate or eliminate the difference in visual effect caused when the display panel 10 is viewed at different viewing angles.
In one embodiment, the obtaining module 120 obtains the initial gray scale value of each sub-pixel in the initial gray scale compensation table by reading the initial gray scale compensation table, and further obtains the cumulative sum of the initial gray scale values of each sub-pixel in the corresponding initial gray scale compensation table and the sum of the number of the initial gray scale values of each sub-pixel in the initial gray scale compensation table. Then, the obtaining module 120 obtains an average gray scale value corresponding to each sub-pixel in the initial gray scale compensation table according to the division result of the accumulated sum and the number sum.
In one embodiment, the calculating module 130 obtains the gray-scale base value to be compensated according to the difference result between the initial gray-scale value and the average gray-scale value. Then, the calculation module 130 obtains the gray scale value to be compensated according to the multiplication result of the gray scale base value to be compensated and the comparison factor. Then, the calculation module 130 obtains a target gray level value according to the addition result of the gray level value to be compensated and the average gray level value. Then, the generating module 140 generates a corresponding target gray scale compensation table according to the received target gray scale values.
In one embodiment, the scale factor has a fractional number greater than 0 and less than 1.
In one embodiment, the scale factor has a value in a range greater than or equal to 0.3 and less than or equal to 0.9 decimal.
In one embodiment, the scaling factor is 0.4.
As shown in fig. 4, the present embodiment provides a gray scale compensation method for a display panel 10, which includes the following steps:
step S10: and acquiring the initial gray scale value and the average gray scale value of each sub-pixel according to the initial gray scale compensation table.
Specifically, the step of obtaining the initial gray scale value and the average gray scale value of each sub-pixel according to the initial gray scale compensation table includes: acquiring initial gray scale values corresponding to the sub-pixels based on the initial gray scale compensation table; obtaining the accumulation result of the initial gray-scale values of the sub-pixels and the sum of the number of the initial gray-scale values of the sub-pixels based on the initial gray-scale values; and determining an average gray scale value according to the division result of the sum of the accumulation result and the quantity.
Step S20: based on the view difference data, a scaling factor is determined.
Specifically, the step of determining a scale factor based on the view difference data comprises: based on a JND algorithm, obtaining a front view angle JND value and a side view angle JND value of a corresponding sampling point; determining visual angle difference data according to the difference between the positive visual angle JND value and the side visual angle JND value; when the visual angle difference data is smaller than or equal to a preset sensible threshold, determining the value range of the scale factor; and selecting a corresponding scale factor based on the value range of the scale factor.
When the preset sensible threshold is less than or equal to 2, the value range of the scale factor is a decimal number which is greater than 0 and less than 1.
In one embodiment, when the predetermined perceivable threshold is less than or equal to 1.4, the scale factor is a decimal that is greater than or equal to 0.3 and less than or equal to 0.9.
Step S30: and determining the target gray-scale value of each sub-pixel according to the initial gray-scale value, the average gray-scale value and the scale factor.
Specifically, the step of determining the target gray scale value of each sub-pixel according to the initial gray scale value, the average gray scale value and the scale factor includes: determining a gray scale compensation value corresponding to each sub-pixel according to the initial gray scale value, the average gray scale value and the scale factor; and superposing the gray scale compensation value of each sub-pixel to the average gray scale value to obtain a target gray scale value corresponding to each sub-pixel.
The step of determining the gray scale compensation value corresponding to each sub-pixel according to the initial gray scale value, the average gray scale value and the scale factor comprises the following steps: obtaining a difference result of the initial gray scale value and the average gray scale value based on the initial gray scale value and the average gray scale value; and determining the gray scale compensation value of the corresponding sub-pixel according to the multiplication result of the phase difference result and the scale factor.
And step S40: and obtaining a corresponding target gray scale compensation table based on the target gray scale value of each sub-pixel.
As shown in fig. 5, in one embodiment, the specific process of the compensation panel in this embodiment is as follows:
the display panel 10 performs the following processing on the 25 th gray level, the 60 th gray level and the 128 th gray level of the R, G, B channel: and acquiring compensation information corresponding to each pixel in the current compensation table, wherein the compensation information can be but not limited to an adjustment value of a specific gray scale, and can also be a voltage value to be adjusted, and an average value of the compensation information of all pixels in the current compensation table is acquired according to the adjustment value corresponding to each pixel or the voltage value to be adjusted. Then, the scale factor ratio is initialized, and each pixel value of the compensation table is corrected according to formula 1:
norm＝(data-datamean)*ratio+datamean (1)
wherein the data is the adjustment value of the specific gray scale or the voltage value to be adjusted in the current compensation table, and the datameanFor the average value of all data in the current compensation table, ratio is an adjusted scale factor, and norm represents the compensation information of any pixel in the target gray-scale compensation table.
For example, taking the ratio as 0.4 as an example, one of the current compensation tables is table 1 as shown below:
table 1
| 3 | 4 | 6 | 5 |
| 5 | 3 | 6 | 6 |
| 5 | 3 | 4 | 7 |
| 4 | 6 | 5 | 8 |
Wherein each number represents the compensation information of the corresponding pixel, for example, if the first row and column 3 is a data, the sum of the data in table 1 is 80, the number of data is 16, the data in table 1 ismeanIs 80 divided by 16 to be 5. Then, table 1 and equation 1 can be used to obtain: the norm of the first row and column 3 of table 1 after correction is (3-5) × 0.4+5, i.e. 4.2. Based on this, norm corresponding to different data in table 1 can be obtained, and then the norm is adopted to correspondingly replace the original data, so as to obtain a target gray scale compensation table, namely table 2 shown as follows:
table 2
| 4.2 | 4.6 | 5.4 | 5 |
| 5 | 4.2 | 5.4 | 5.4 |
| 5 | 4.2 | 4.6 | 5.8 |
| 4.6 | 5.4 | 5 | 6.2 |
It should be noted that table 1 may be, but is not limited to, the initial gray level compensation table in the present application, and table 2 is a target gray level compensation table corresponding to table 1. The numbers listed in the two tables are only illustrative and are not intended to limit the embodiments of the present application.
And testing different ratio values to obtain the front side visual angles such as JND judgment under different ratio conditions, and recording the results of the front side visual angle judgment and the like. In the process, when the ratio is greater than 1, continuously searching for the optimal ratio; when the ratio is not more than 1, the ratio is adjusted, and then the compensation value is corrected by the formula I.
Until the optimal value is obtained by the positive side viewing angle such as JND determination, the side viewing angle demura effect is optimal and the positive viewing angle effect can also satisfy the specification such as determination when the ratio in the present proposal is 0.4. And then obtaining the optimal correction data as the final panel compensation data.
As shown in fig. 6, before improvement, as the width of the display panel 10 increases, the positive viewing angle gray scale on the display panel 10 remains unchanged as shown by a curve S11; and the lateral viewing angle gray scale on the display panel 10 fluctuates like a sine curve as shown by the curve S21. Obviously, in this case before improvement, there is a large difference between the front-view angle gray scale and the side-view angle gray scale in the width direction of the display panel 10, which easily causes different vertical stripes to appear in different viewing angles.
Through experimental analysis: according to the characteristics of the front viewing angle Demura, the above situation is improved, the front viewing angle mura is changed to be fluctuated, the side viewing angle mura is changed to be smooth, and the front viewing angle meets the requirement at the same time, as shown in fig. 7, the gray difference between the front viewing angle gray curve S12 and the side viewing angle gray curve S22 is reduced at the same width of the display panel 10, so that the display image quality similar to that when the display image is viewed at different viewing angles is improved.
Based on the above, the corresponding experimental results were obtained: it can be seen from the observation panel that when the ratio is greater than 0 and less than 1, the side viewing angle is better than the original effect before improvement under the condition that the front viewing angle meets the requirement.
Specifically, as shown in fig. 8, as the scale factor ratio increases in the interval of 0 to 1, the visual effect of the front face shown by the curve S31 increases in a linear manner; while the side visual effect shown by curve S32 achieves the best visual effect at a scale factor ratio of around 0.4.
As shown in fig. 9, in different viewing angles, along with the change of the scale factor, the corresponding JND value obtained by the JND algorithm also changes synchronously, specifically as follows:
in the lateral comparison, the curve S41 shows the variation tendency of the JND value with the scale factor in the case of the front view angle, and the curve S42 shows the variation tendency of the JND value with the scale factor in the case of the side view angle.
The specific case of the longitudinal comparison is as follows: when the scale factor is close to 1, the value of the front view JND is 1.8, the value of the side view JND is 3.1, and the JND difference value between the front view and the side view is 1.3; when the scale factor is 0.9, the positive view JND value is 1.9, the side view JND value is 3.1, and the JND difference between the positive side views is 1.2; when the scale factor is 0.8, the positive view JND value is 2.1, the side view JND value is 3.4, and the JND difference between the positive side views is 1.3; when the scale factor is 0.7, the JND value of the front visual angle is 2.1, the JND value of the side visual angle is 3.4, and the JND difference value between the front visual angles is 1.3; when the scale factor is 0.6, the positive view JND value is 2.3, the side view JND value is 3.4, and the JND difference between the positive side views is 1.1; when the scale factor is 0.5, the positive visual angle JND value is 2.5, the side visual angle JND value is 3, and the JND difference value between the positive side visual angles is 0.5; when the scale factor is 0.4, the positive view JND value is 2.7, the side view JND value is 2.8, and the JND difference between the positive side views is 0.1; when the scale factor is 0.3, the JND value of the front visual angle is 3.4, the JND value of the side visual angle is 2, and the JND difference value between the front visual angles is 1.4; when the scale factor is close to 0, the positive view JND value is 4, the side view JND value is 4, and the JND difference between the positive side views is 0.
As can be seen from the above-described specific case of the longitudinal contrast, in the case where the scale factor is greater than 0 and less than 1, the JND difference between the front side viewing angles is 1.4 at maximum, which can be used as a threshold value of the noticeable difference between the front side viewing angles, and once the threshold value is exceeded, a visual difference between the front side viewing angles visible to the naked eye is generated. When the JND difference value between the front side views is less than or equal to the threshold, the resulting visual difference between the front side views is invisible to the naked eye.
Therefore, based on the above analysis, it can be determined that, in the case that the scale factor is greater than 0.3 and less than 0.9, there is a better JND difference between front-side views, and the JND minimum difference can filter out a value of 1.4, and the JND minimum difference can be reduced to 1.3, and accordingly, a more synchronous front-side visual effect can be achieved compared to a value range in which the scale factor is greater than 0 and less than 1.
Further, in the case where the scale factor is located near 0.4, the JND difference between the front views can be reduced to about 0.1, and almost the same front visual effect can be achieved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The timing controller and the display panel provided by the embodiment of the present application are described in detail above, and a specific example is applied to illustrate the principle and the implementation of the present application, and the description of the embodiment is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A timing controller, comprising:
the storage module is used for storing a corresponding initial gray scale compensation table and a corresponding scale factor, and the scale factor is determined based on the visual angle difference data;
the acquisition module is connected with the storage module and used for acquiring the initial gray scale value and the average gray scale value of the corresponding sub-pixel according to the initial gray scale compensation table;
the calculation module is connected with the acquisition module and used for determining a target gray-scale value of the corresponding sub-pixel according to the initial gray-scale value, the average gray-scale value and the scale factor; and
and the generating module is connected with the calculating module and the storage module and used for generating and outputting a corresponding target gray scale compensation table to the storage module according to the target gray scale value of the corresponding sub-pixel.
2. The timing controller according to claim 1, wherein the obtaining module obtains a cumulative sum of the initial gray scale values of the sub-pixels in the initial gray scale compensation table and a sum of the number of the initial gray scale values of the sub-pixels in the initial gray scale compensation table according to the initial gray scale compensation table.
3. The timing controller of claim 2, wherein the obtaining module obtains the average gray level value according to a result of dividing the accumulated sum by the number sum.
4. The timing controller according to claim 1, wherein the calculation module obtains a gray-scale base value to be compensated according to a difference result between the initial gray-scale value and the average gray-scale value.
5. The timing controller according to claim 4, wherein the calculating module obtains the gray-scale value to be compensated according to a multiplication result of the gray-scale base value to be compensated and the scaling factor.
6. The timing controller according to claim 5, wherein the calculation module obtains the target gray level value according to an addition result of the gray level value to be compensated and the average gray level value.
7. The timing controller of any one of claims 1 to 6, wherein the scale factor has a fractional number greater than 0 and less than 1.
8. The timing controller of claim 7, wherein the scale factor has a value in a range of a decimal fraction greater than or equal to 0.3 and less than or equal to 0.9.
9. The timing controller of claim 8, wherein the scaling factor is 0.4.
10. A display panel comprising the timing controller of any one of claims 1 to 9; the time schedule controller executes the target gray scale compensation table to correspondingly compensate at least one specific gray scale of at least one color channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110193907.4A CN112863422B (en) | 2021-02-20 | 2021-02-20 | Time schedule controller and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110193907.4A CN112863422B (en) | 2021-02-20 | 2021-02-20 | Time schedule controller and display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112863422A CN112863422A (en) | 2021-05-28 |
| CN112863422B true CN112863422B (en) | 2022-04-26 |
Family
ID=75988386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110193907.4A Active CN112863422B (en) | 2021-02-20 | 2021-02-20 | Time schedule controller and display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112863422B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114743509B (en) * | 2022-03-31 | 2023-11-17 | 海宁奕斯伟集成电路设计有限公司 | Image processing method, device and display device |
| CN114898699A (en) * | 2022-06-29 | 2022-08-12 | Tcl华星光电技术有限公司 | Display control method and display panel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652966A (en) * | 2017-03-20 | 2017-05-10 | 北京京东方显示技术有限公司 | Gray-scale signal compensation unit, gray-scale signal compensation method, source driver and display device |
| CN106782371A (en) * | 2016-12-20 | 2017-05-31 | 惠科股份有限公司 | The driving method of liquid crystal display device and its liquid crystal display panel |
| CN107230446A (en) * | 2017-07-05 | 2017-10-03 | 深圳市华星光电技术有限公司 | The driving method and system of display device |
| CN109256100A (en) * | 2018-09-30 | 2019-01-22 | 惠科股份有限公司 | A kind of driving method and drive system of display panel |
| CN109493800A (en) * | 2018-11-30 | 2019-03-19 | 深圳市华星光电半导体显示技术有限公司 | The processing method of viewing angle compensation look-up table and the driving method of display device |
| CN111599307A (en) * | 2020-06-09 | 2020-08-28 | 北京交通大学 | Pixel compensation method of OLED display panel and information processing device |
| WO2020191615A1 (en) * | 2019-03-26 | 2020-10-01 | 深圳市柔宇科技有限公司 | Display driving method and display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011125899A1 (en) * | 2010-04-02 | 2011-10-13 | シャープ株式会社 | Liquid crystal display, display method, program, and recording medium |
-
2021
- 2021-02-20 CN CN202110193907.4A patent/CN112863422B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782371A (en) * | 2016-12-20 | 2017-05-31 | 惠科股份有限公司 | The driving method of liquid crystal display device and its liquid crystal display panel |
| CN106652966A (en) * | 2017-03-20 | 2017-05-10 | 北京京东方显示技术有限公司 | Gray-scale signal compensation unit, gray-scale signal compensation method, source driver and display device |
| CN107230446A (en) * | 2017-07-05 | 2017-10-03 | 深圳市华星光电技术有限公司 | The driving method and system of display device |
| CN109256100A (en) * | 2018-09-30 | 2019-01-22 | 惠科股份有限公司 | A kind of driving method and drive system of display panel |
| CN109493800A (en) * | 2018-11-30 | 2019-03-19 | 深圳市华星光电半导体显示技术有限公司 | The processing method of viewing angle compensation look-up table and the driving method of display device |
| WO2020191615A1 (en) * | 2019-03-26 | 2020-10-01 | 深圳市柔宇科技有限公司 | Display driving method and display device |
| CN111599307A (en) * | 2020-06-09 | 2020-08-28 | 北京交通大学 | Pixel compensation method of OLED display panel and information processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112863422A (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8848004B2 (en) | Method of calculating correction value and display device | |
| US9601062B2 (en) | Backlight dimming method and liquid crystal display using the same | |
| JP4455649B2 (en) | Image display method and image display apparatus | |
| US9666113B2 (en) | Display, image processing unit, and display method for improving image quality | |
| JP6309777B2 (en) | Display device, display panel driver, and display panel driving method | |
| CN112863422B (en) | Time schedule controller and display panel | |
| US7522127B2 (en) | Driving method for driving a display device including display pixels, each of which includes a switching element and a pixel electrode, display device, and medium | |
| US20050276502A1 (en) | Increasing gamma accuracy in quantized systems | |
| EP3131084A1 (en) | Image processing device with image compensation function and image processing method thereof | |
| CN109243384B (en) | Display device, driving method thereof, driving apparatus thereof, and computer readable medium | |
| CN108122546B (en) | Display apparatus and image processing method thereof | |
| CN103578444A (en) | Pixel driving method and liquid crystal pixel matrix | |
| CN110956932B (en) | Display device, driving method thereof, driving apparatus thereof, and computer readable medium | |
| US8280192B2 (en) | Smart grey level magnifier for digital display | |
| US10777151B2 (en) | Driving method of display device and display device | |
| CN109559693B (en) | Driving method and driving system of display panel and display device | |
| JP2008039868A (en) | Liquid crystal display device | |
| JP6265710B2 (en) | Image processing apparatus, computer program, and image processing method | |
| CN113380209B (en) | Display device and display method thereof | |
| US7184608B2 (en) | Apparatus and method for edge enhancement of digital image data and digital display device including edge enhancer | |
| KR20090003080A (en) | Display apparatus and method of adjusting brightness for the same | |
| KR20170113071A (en) | Apparatus and Method for Displaying Image | |
| WO2020124898A1 (en) | Image display method and display | |
| US11145266B2 (en) | Method and circuit for viewing angle image compensation | |
| CN111540325B (en) | Image enhancement method and image enhancement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |