CN101996618A - Control method for increasing brightness consistency, brightness correction controller and display device - Google Patents
Control method for increasing brightness consistency, brightness correction controller and display device Download PDFInfo
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Abstract
The invention relates to a control method for increasing brightness consistency, a brightness correction controller and a display device. The control method is used for increasing the brightness consistency of the display device, one panel of the display device comprises a plurality of sampling pixels, and each sampling pixel corresponds to a sampling coordinate value of the panel. The control method comprises the following steps of: receiving an input pixel; judging an adjacent sampling pixel of the input pixel according to one coordinate value of the input pixel and the sampling coordinate values of the plurality of sampling pixels; obtaining a brightness searching table of the adjacent sampling pixel, wherein each brightness searching table comprises a brightness correction value of one adjacent sampling pixel; respectively obtaining a specific brightness correction value corresponding to a gray value in the brightness searching table according to a corresponding gray value of the input pixel; and calculating a brightness correction value of the input pixel according to the coordinate value of the input pixel, the sampling coordinate value of the adjacent sampling pixel and the specific brightness correction value.
Description
Technical field
The present invention relates to a kind of control method and associated luminance correcting controller and display device of promoting brightness uniformity, particularly relate to a kind of limited brightness look-up table that utilizes, can make all pixels all obtain control method and the associated luminance correcting controller and the display device of gamma correction.
Background technology
Along with the continuous development of video signal science and technology, the consumer improves constantly the quality requirements of display device.Generally speaking, the quality of weighing a display device have several towards, such as display device must be reliable and stable, image quality is clear.Wherein, be to improve the image quality sharpness, display device must possess high resolving power and good chromaticity, must accomplish perfection to the homogeneity of picture brightness the consistance of brightness (or be called) in addition as far as possible.If with the liquid crystal indicator is example, because the Luminance Distribution of back lighting device is even inadequately, and the difference that is used for driving liquid crystal optics characteristic in the magnitude of voltage of pixel and the pixel, cause the brightness performance of general liquid crystal indicator can't reach good consistance, therefore need be by other method compensation, make the brightness can be even.Angle from ordinary consumer, if examine a liquid crystal indicator without gamma correction with naked eyes, just can find that the brightness performance between the viewing areas different in the liquid crystal indicator often is not quite similar, if further measured with photometer, then can find different pixels when performance same grayscale data, its brightness value often has no small difference.Wherein, at the zone line and the fringe region of picture, the difference of brightness is especially obvious.For the brightness uniformity that makes display device can reach certain standard, at first must be in the product design stage of display device, adding can supply the circuit and the function of gamma correction, and adds rigorous gamma correction program in the production run of display device.At last, when display device when normal mode is operated, display device can be carried out gamma correction (or being called luminance compensation) to the image data of input, makes the brightness uniformity of all pixels in the picture can meet the standard of high image quality.
The purpose of gamma correction is to make the input gray level value of any two pixels of display device when being identical, and the brightness value that two pixels are exported is also identical as much as possible.But because all factors, between any two pixels without the display device of gamma correction, its brightness of being exported when the input gray level value is identical can not equate usually, even very big error is arranged, therefore must be through the program of a gamma correction, to improve the homogeneity of brightness.The way of gamma correction is the gray-scale value of being imported is adjusted, and produces a new gray-scale value, and when the gray-scale value that two pixels are imported was identical, its brightness of exporting was also identical as far as possible.And the gap between the gray-scale value of new gray-scale value and former input is called intensity correction values δ E.Generally speaking, because the sum of all pixels in the picture is quite surprising, if will carry out the gamma correction between pixel and the pixel, then finishing a display device required correction time will be quite very long, generally need a few hours not wait to tens of hours, time cost is considerable.Simultaneously, after finishing gamma correction, display device must have the intensity correction values δ E corresponding to all gray scales of all pixels, and therefore required storage space is bigger, and needing to use the dynamic RAM (dynamic RAM) of an outside, cost is also higher.
Summary of the invention
Therefore, fundamental purpose of the present invention provides a kind of control method and associated luminance correcting controller and display device that is used for promoting brightness uniformity.
The present invention discloses a kind of control method of brightness uniformity of enhancement one display device, and a panel of this display device includes a plurality of pixels sampled, and each pixels sampled is corresponding to a sampling coordinate figure of this panel, and this control method includes reception one input pixel; Corresponding to a coordinate figure of this panel and a plurality of sampling coordinate figures of these a plurality of pixels sampled, judge a plurality of adjacent samples pixels of this input pixel according to this input pixel; Obtain a plurality of brightness look-up tables of these a plurality of adjacent samples pixels, each brightness look-up table comprises a plurality of intensity correction values of an adjacent samples pixel; According to the pairing gray-scale value of this input pixel, obtain a certain luminance corrected value in each the brightness look-up table respectively at these a plurality of brightness look-up tables corresponding to this gray-scale value; And, calculate an intensity correction values of this input pixel according to these sampling coordinate figure and these a plurality of certain luminance corrected values of importing pairing this coordinate figure of pixel, these a plurality of adjacent samples pixels.
The present invention also discloses a kind of gamma correction controller of brightness uniformity of enhancement one display device, one panel of this display device includes a plurality of pixels sampled, each pixels sampled is corresponding to a sampling coordinate figure of this panel, this gamma correction controller includes a receiving end, is used for receiving an input pixel; One adjacent samples pixel judging unit is used for according to this input pixel judging a plurality of adjacent samples pixels of this input pixel corresponding to a coordinate figure of this panel and a plurality of sampling coordinate figures of these a plurality of pixels sampled; One look-up table reading unit is used for obtaining a plurality of brightness look-up tables of these a plurality of adjacent samples pixels, and each brightness look-up table comprises a plurality of intensity correction values of an adjacent samples pixel; One corrected value reading unit is used for according to the pairing gray-scale value of this input pixel, obtains the certain luminance corrected value corresponding to this gray-scale value in each the brightness look-up table respectively at these a plurality of brightness look-up tables; And a compensation computing unit, be used for reaching these a plurality of certain luminance corrected values according to the sampling coordinate figure of pairing this coordinate figure of this input pixel, these a plurality of adjacent samples pixels, calculate an intensity correction values of this input pixel.
The present invention also discloses a kind of display device of promoting brightness uniformity, includes a panel, includes a plurality of pixels sampled, and each pixels sampled is corresponding to a sampling coordinate figure of this panel; One image receiving element is in order to receive a plurality of input pixels; An and gamma correction controller, include an adjacent samples pixel judging unit, be used for importing pixel corresponding to a coordinate figure of this panel and a plurality of sampling coordinate figures of these a plurality of pixels sampled, judge a plurality of adjacent samples pixels of this input pixel according to one of these a plurality of input pixels; One look-up table reading unit is used for obtaining a plurality of brightness look-up tables of these a plurality of adjacent samples pixels, and each brightness look-up table comprises a plurality of intensity correction values of an adjacent samples pixel; One corrected value reading unit is used for according to the pairing gray-scale value of this input pixel, obtains the certain luminance corrected value corresponding to this gray-scale value in each the brightness look-up table respectively at these a plurality of brightness look-up tables; And a compensation computing unit, be used for reaching these a plurality of certain luminance corrected values according to the sampling coordinate figure of pairing this coordinate figure of this input pixel, these a plurality of adjacent samples pixels, calculate an intensity correction values of this input pixel.
Description of drawings
Fig. 1 is for having the configuration diagram of the display device of brightness correcting function according to one of the embodiment of the invention.
Fig. 2 A and 2B are the synoptic diagram that an input pixel reaches the position relation of 4 contiguous pixels sampled in picture.
Fig. 3 is the flow process synoptic diagram according to the control method of enhancement display device brightness uniformity of the present invention.
The reference numeral explanation
The PANEL panel
10 display device
102 gamma correction controllers
100 image receiving elements
220 search storer
222 adjacent samples pixel judging units
224 look-up table reading units
228 corrected value reading units
230 compensation computing units
232 proofread and correct output unit
30 control flows
300,302,304,306,308,310,312 steps
Embodiment
In order to reduce the correction time of display device, the present inventor has disclosed a brightness correcting method in No. the 098125483rd, Taiwan patented claim, it is to utilize a transfer function to carry out coordinate conversion, with original exponential relationship between the brightness of pixel and the gray scale, after coordinate conversion, among new coordinate, be transformed into a kind of linear relationship.Thus, can utilize linear interpolation, derive in each pixels sampled other, become the exclusive linearity correction function of each pixels sampled without brightness and gray-scale relation that reality measures.Then, the linearity correction function of pixels sampled and the linearity correction function of benchmark pixel are compared, can judge each gray-scale value of each pixels sampled and the relation between the adjusted new gray-scale value, be intensity correction values δ E, and calculate, derive the brightness look-up table (Gamma Table) of each pixels sampled according to this.Because the minimum ratio that the pixels sampled number on the picture only accounts for total pixel number in the picture usually (generally speaking, total pixel number is about millions of or hundreds thousand of, and that the pixels sampled number is about is thousands of or hundreds of), thereby display device is significantly reduced required correction time.Yet, when display device when normal mode is operated, comprise that all pixels of pixels sampled all need to carry out gamma correction, so the present invention discloses the brightness look-up table how to utilize each pixels sampled, all pixels are carried out gamma correction.
Please refer to Fig. 1, Fig. 1 is for having the configuration diagram of the display device 10 of brightness correcting function according to one of the embodiment of the invention.Display device 10 includes a panel PANEL, an image receiving element 100 and a gamma correction controller 102.Panel PANEL includes a plurality of display units and is arranged in a matrix in regular turn, and the part display unit is defined as pixels sampled SP_1～SP_M.Image receiving element 100 is used for the image greyscale data from external image signal stream, receives the input pixel INP_1～INP_n corresponding to all display units of panel PANEL.Gamma correction controller 202 is used for the input pixel INP_1～INP_n that is received is carried out gamma correction, and it includes searches storer 220, an adjacent samples pixel judging unit 222, a look-up table reading unit 224, a corrected value reading unit 228, a compensation computing unit 230 and a correction output unit 232.Search storer 220 and be used for storing brightness look-up table (Gamma Table) GAT_1～GAT_M corresponding to pixels sampled SP_1～SP_M, arbitrary brightness look-up table GAT_x includes a plurality of intensity correction values of a corresponding pixels sampled SP_x, it is preferably obtained according to No. the 098125483rd, Taiwan patented claim, but not as limit.Adjacent samples pixel judging unit 222 is used for according to the coordinate figure of a certain input pixel INP_i and the coordinate figure of pixels sampled SP_1～SP_M, judges among pixels sampled SP_1～SP_M and adjacent pixels sampled SP_a, SP_b, SP_c, the SP_d of input pixel INP_i.Look-up table reading unit 224 usefulness causes are searched brightness look-up table GAT_a, GAT_b, GAT_c, the GAT_d that reads in the storer 220 corresponding to pixels sampled SP_a, SP_b, SP_c, SP_d.Corrected value reading unit 228 is used for according to the pairing gray-scale value GL_i of input pixel INP_i, respectively at intensity correction values δ E_a, the δ E_b, δ E_c, the δ E_d that obtain among brightness look-up table GAT_a, GAT_b, GAT_c, the GAT_d corresponding to gray-scale value GL_i.Compensation computing unit 230 calculates the intensity correction values δ E_i of input pixel INP_i according to importing pixel INP_i and pixels sampled SP_a, SP_b, the pairing coordinate figure of SP_c, SP_d and intensity correction values δ E_a, δ E_b, δ E_c, δ E_d.At last, proofread and correct output unit 232 and calculate gray-scale value GL_i and intensity correction values δ E_i sum, and export the result to panel PANEL.
In simple terms, when image receiving element 100 receives input pixel INP_i, the adjacent pixels sampled SP_a of pixel INP_i, SP_b, SP_c, SP_d are judged and imported to adjacent samples pixel judging unit 222 earlier, makes look-up table reading unit 224 obtain corresponding brightness look-up table GAT_a, GAT_b, GAT_c, GAT_d in the storer 220 by searching.Corrected value reading unit 228 from brightness look-up table GAT_a, GAT_b, GAT_c, GAT_d, is obtained intensity correction values δ E_a, δ E_b, δ E_c, the δ E_d relevant with the gray-scale value GL_i that imports pixel INP_i again.230 of computing units of compensation are according to the coordinate figure of input pixel INP_i and pixels sampled SP_a, SP_b, SP_c, SP_d and intensity correction values δ E_a, δ E_b, δ E_c, δ E_d, calculate the intensity correction values δ E_i of input pixel INP_i, and export the correction result (GL_i+ δ E_i) of input pixel INP_i to panel PANEL by proofreading and correct output unit 232.In other words, gamma correction controller 102 is the brightness look-up table GAT_a～GAT_d according to adjacent samples pixel SP_a～SP_d of input pixel INP_i, judges the intensity correction values δ E_i of input pixel INP_i.Thus, search panel PANEL partial pixel in the storer 220 and (be the brightness look-up table of pixels sampled SP_1～SP_M), can carry out gamma correction as long as utilize to be stored in all pixels.
Be noted that display device 10 shown in Figure 1 is embodiments of the invention, those skilled in the art can do different modifications according to this, and is not limited thereto.For instance, the pixels sampled SP_a～SP_d adjacent with input pixel INP_i is not limited to 4, can also be other quantity, as 6,8 etc.In addition, compensation computing unit 230 calculates the method for the intensity correction values δ E_i of input pixel INP_i, preferably can pass through a weighted sum mode, that is according to the coordinate figure of importing pixel INP_i and pixels sampled SP_a～SP_d, judge the distance of input pixel INP_i and pixels sampled SP_a～SP_d, calculate intensity correction values δ E_a, δ E_b, δ E_c, δ E_d weighted value more according to this, to draw intensity correction values δ E_i corresponding to intensity correction values δ E_i.That is to say, when the distance of input pixel INP_i and a certain adjacent samples pixel more greatly, then the intensity correction values of this adjacent samples pixel contribute to the weighted value of intensity correction values δ E_i will be littler; Otherwise near if distance heals, then pairing weighted value will heal greatly.For instance, please refer to Fig. 2 A and Fig. 2 B, Fig. 2 A and Fig. 2 B are respectively the synoptic diagram of the position relation of input pixel INP_1, INP_2 and pixels sampled SP_a～SP_d.In Fig. 2 A, input pixel INP_1 is positioned at the center of pixels sampled SP_a～SP_d, and therefore, the weighted value of intensity correction values δ E_a～δ E_d is all 0.25.And in Fig. 2 B, input pixel INP_2 is positioned at the position of being partial to pixels sampled SP_a, and then according to the distance that is indicated among Fig. 2 B, the weighted value of intensity correction values δ E_a～δ E_d becomes 0.375,0.125,0.25 and 0.25.
In addition, in Fig. 1, look-up table reading unit 224 is used for reading searches brightness look-up table stored in the storer 220, and according to different system demand or data volume, the design of searching storer 220 also can have other variation.For example, if the data volume of brightness look-up table GAT_1～GAT_M is less, then searches storer 220 and can realize by a built-in flash memory (flash memory); Otherwise,, then can increase by an external dynamic RAM (dynamic RAM) and realize searching storer 220 if the data volume of brightness look-up table GAT_1～GAT_M is bigger.In addition, can additionally increase by a high-speed cache between look-up table reading unit 224 and the corrected value reading unit 228,, be used for increasing data reading speed as static RAM (static RAM).For example, if the data volume of brightness look-up table GAT_1～GAT_M is less, then when start, look-up table reading unit 224 can (comprise GAT_a～GAT_d), be sent in the high-speed cache with being stored in brightness look-up table GAT_1～GAT_M of searching storer 220.On the contrary, if the quantity of brightness look-up table GAT_1～GAT_M is more, needed memory span is bigger, and then high-speed cache can be used to brightness look-up table GAT_a, GAT_b, GAT_c, the GAT_d that temporary look-up table reading unit 224 is read.Be noted that aforementioned is the possible storage interface of explanation gamma correction controller 102, it does not conflict with main spirit of the present invention, and those skilled in the art can do suitable variation according to the different system demand.
Main concept of the present invention be according in the brightness look-up table of adjacent samples pixel of an input pixel corresponding to the intensity correction values of the gray-scale value of this input pixel, judge the intensity correction values of this input pixel.Thus, as long as utilize the brightness look-up table of partial pixel (being pixels sampled), can carry out gamma correction to all pixels.
About the function mode of display device 10, can further reduce a control flow 30, as shown in Figure 3.Control flow 30 includes following steps:
Step 300: beginning.
Step 302: adjacent samples pixel judging unit 222 is judged adjacent samples pixel SP_a, SP_b, SP_c, the SP_d of input pixel INP_i according to the coordinate figure of input pixel INP_i and pixels sampled SP_1～SP_M.
Step 304: look-up table reading unit 224 is obtained brightness look-up table GAT_a, GAT_b, GAT_c, GAT_d.
Step 306: corrected value reading unit 228 is according to the gray-scale value GL_i of input pixel INP_i, respectively at intensity correction values δ E_a, the δ E_b, δ E_c, the δ E_d that obtain among brightness look-up table GAT_a, GAT_b, GAT_c, the GAT_d corresponding to gray-scale value GL_i.
Step 308: compensation computing unit 230 calculates the intensity correction values δ E_i of input pixel INP_i according to the coordinate figure of input pixel INP_i and pixels sampled SP_1～SP_M and intensity correction values δ E_a, δ E_b, δ E_c, δ E_d.
Step 310: proofread and correct output unit 232 and calculate gray-scale value GL_i and intensity correction values δ E_i sum, and export the result to panel PANEL.
Step 312: finish.
The detailed description of control flow 30 can not given unnecessary details at this with reference to aforementioned.
The present invention is the brightness look-up table that utilizes pixels sampled, calculates, derives the intensity correction values of other pixel, therefore can carry out gamma correction to all input pixels.Certainly, except being applicable to luminance signal, the present invention is also applicable to the gamma correction to a certain color signal, and the effect that is equal to is arranged.
In sum, utilize limited brightness look-up table, the present invention can make each pixel in the picture obtain gamma correction, except the brightness uniformity that can make all pixels in the picture can meet the standard of high image quality, can reduce storage requirement simultaneously, to reduce cost.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (20)
1. control method of promoting the brightness uniformity of a display device, a panel of this display device includes a plurality of pixels sampled, and each pixels sampled is corresponding to a sampling coordinate figure of this panel, and this control method includes:
Receive an input pixel;
Corresponding to a coordinate figure of this panel and a plurality of sampling coordinate figures of these a plurality of pixels sampled, judge a plurality of adjacent samples pixels of this input pixel according to this input pixel;
Obtain a plurality of brightness look-up tables of these a plurality of adjacent samples pixels, each brightness look-up table comprises a plurality of intensity correction values of an adjacent samples pixel;
According to the pairing gray-scale value of this input pixel, obtain a certain luminance corrected value in each the brightness look-up table respectively at these a plurality of brightness look-up tables corresponding to this gray-scale value; And
According to sampling coordinate figure and these a plurality of certain luminance corrected values of pairing this coordinate figure of this input pixel, these a plurality of adjacent samples pixels, calculate an intensity correction values of this input pixel.
2. control method as claimed in claim 1, it also comprises the brightness look-up table of storage corresponding to these a plurality of pixels sampled.
3. control method as claimed in claim 1 wherein according to sampling coordinate figure and these a plurality of certain luminance corrected values of pairing this coordinate figure of this input pixel, these a plurality of adjacent samples pixels, is calculated this intensity correction values of this input pixel, includes:
According to the sampling coordinate figure of this input pairing this coordinate figure of pixel and these a plurality of adjacent samples pixels, calculate a plurality of distances of this input pixel and these a plurality of adjacent samples pixels; And
According to these a plurality of distances, in the mode of a weighted sum, calculate a plurality of weighted values of these a plurality of certain luminance corrected values, to calculate this intensity correction values of this input pixel corresponding to this intensity correction values of this input pixel.
4. control method as claimed in claim 1 also includes:
Calculate this gray-scale value of this input pixel and this intensity correction values sum of this input pixel; And export this gray-scale value and this intensity correction values and to this panel, to show this input pixel.
5. gamma correction controller of promoting the brightness uniformity of a display device, a panel of this display device includes a plurality of pixels sampled, and each pixels sampled is corresponding to a sampling coordinate figure of this panel, and this gamma correction controller includes:
One receiving end is used for receiving an input pixel;
One adjacent samples pixel judging unit is used for according to this input pixel judging a plurality of adjacent samples pixels of this input pixel corresponding to a coordinate figure of this panel and a plurality of sampling coordinate figures of these a plurality of pixels sampled;
One look-up table reading unit is used for obtaining a plurality of brightness look-up tables of these a plurality of adjacent samples pixels, and each brightness look-up table comprises a plurality of intensity correction values of an adjacent samples pixel;
One corrected value reading unit is used for according to the pairing gray-scale value of this input pixel, obtains the certain luminance corrected value corresponding to this gray-scale value in each the brightness look-up table respectively at these a plurality of brightness look-up tables; And
One compensation computing unit is used for reaching these a plurality of certain luminance corrected values according to the sampling coordinate figure of pairing this coordinate figure of this input pixel, these a plurality of adjacent samples pixels, calculates an intensity correction values of this input pixel.
6. gamma correction controller as claimed in claim 5, it also comprises searches storer, is used for storing the brightness look-up table corresponding to these a plurality of pixels sampled.
7. gamma correction controller as claimed in claim 6, wherein this look-up table reading unit is to read this to search storer, to obtain these a plurality of brightness look-up tables of these a plurality of adjacent samples pixels.
8. gamma correction controller as claimed in claim 5, wherein this to search storer be a dynamic RAM.
9. gamma correction controller as claimed in claim 5, it also comprises a high-speed cache, is coupled between this look-up table reading unit and this corrected value reading unit, is used for keeping in these a plurality of brightness look-up tables of these a plurality of adjacent samples pixels.
10. gamma correction controller as claimed in claim 9, wherein this high-speed cache is a static RAM.
11. gamma correction controller as claimed in claim 5, wherein this compensation computing unit is to be used for sampling coordinate figure according to pairing this coordinate figure of this input pixel and these a plurality of adjacent samples pixels, calculate a plurality of distances of this input pixel and these a plurality of adjacent samples pixels, and according to these a plurality of distances, in a weighted sum mode, calculate a plurality of weighted values of these a plurality of certain luminance corrected values, to calculate this intensity correction values of this input pixel corresponding to this intensity correction values of this input pixel.
12. gamma correction controller as claimed in claim 5, it also comprises one and proofreaies and correct output unit, be coupled between this compensation computing unit and this panel, be used for calculating this gray-scale value of this input pixel and this intensity correction values sum of this input pixel, and export result of calculation to this panel.
13. a display device of promoting brightness uniformity includes:
One panel includes a plurality of pixels sampled, and each pixels sampled is corresponding to a sampling coordinate figure of this panel;
One image receiving element is in order to receive a plurality of input pixels; And
One gamma correction controller includes:
One adjacent samples pixel judging unit is used for importing pixel corresponding to a coordinate figure of this panel and a plurality of sampling coordinate figures of these a plurality of pixels sampled according to one of these a plurality of input pixels, judges a plurality of adjacent samples pixels of this input pixel;
One look-up table reading unit is used for obtaining a plurality of brightness look-up tables of these a plurality of adjacent samples pixels, and each brightness look-up table comprises a plurality of intensity correction values of an adjacent samples pixel;
One corrected value reading unit is used for according to the pairing gray-scale value of this input pixel, obtains the certain luminance corrected value corresponding to this gray-scale value in each the brightness look-up table respectively at these a plurality of brightness look-up tables; And
One compensation computing unit is used for reaching these a plurality of certain luminance corrected values according to the sampling coordinate figure of pairing this coordinate figure of this input pixel, these a plurality of adjacent samples pixels, calculates an intensity correction values of this input pixel.
14. display device as claimed in claim 13, it also comprises searches storer, is used for storing the brightness look-up table corresponding to these a plurality of pixels sampled.
15. display device as claimed in claim 14, wherein this look-up table reading unit is to read this to search storer, to obtain these a plurality of brightness look-up tables of these a plurality of adjacent samples pixels.
16. display device as claimed in claim 15, wherein this to search storer be a dynamic RAM.
17. display device as claimed in claim 13, it also comprises a high-speed cache, is coupled between this look-up table reading unit and this corrected value reading unit, is used for keeping in these a plurality of brightness look-up tables of these a plurality of adjacent samples pixels.
18. display device as claimed in claim 17, wherein this high-speed cache is a static RAM.
19. display device as claimed in claim 13, wherein this compensation computing unit is to be used for sampling coordinate figure according to pairing this coordinate figure of this input pixel and these a plurality of adjacent samples pixels, calculate a plurality of distances of this input pixel and these a plurality of adjacent samples pixels, and according to these a plurality of distances, in a weighted sum mode, calculate a plurality of weighted values of these a plurality of certain luminance corrected values, to calculate this intensity correction values of this input pixel corresponding to this intensity correction values of this input pixel.
20. display device as claimed in claim 13, it also comprises one and proofreaies and correct output unit, be coupled between this compensation computing unit and this panel, be used for calculating this gray-scale value of this input pixel and this intensity correction values sum of this input pixel, and export result of calculation to this panel.
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| US7301618B2 (en) * | 2005-03-29 | 2007-11-27 | Eastman Kodak Company | Method and apparatus for uniformity and brightness correction in an OLED display |
| JP4770619B2 (en) * | 2005-09-29 | 2011-09-14 | ソニー株式会社 | Display image correction apparatus, image display apparatus, and display image correction method |
| JP4613805B2 (en) * | 2005-11-24 | 2011-01-19 | ソニー株式会社 | Image display device, image display method, program for image display method, and recording medium recording program for image display method |
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| US10453384B2 (en) | 2014-05-30 | 2019-10-22 | Boe Technology Group Co., Ltd. | Luminance compensation method of display device, luminance compensation device and display device |
| CN104021761A (en) * | 2014-05-30 | 2014-09-03 | 京东方科技集团股份有限公司 | Luminance supplementing method and device for display device, and display device |
| US10043443B2 (en) | 2014-05-30 | 2018-08-07 | Boe Technology Group Co., Ltd. | Display device and method and apparatus for compensating luminance of display device |
| US10249264B2 (en) | 2015-07-27 | 2019-04-02 | Boe Technology Group Co., Ltd. | Controller for compensating mura defects, display apparatus having the same, and method for compensating mura defects |
| WO2017016322A1 (en) * | 2015-07-27 | 2017-02-02 | Boe Technology Group Co., Ltd. | Controller for compensating mura defects, display apparatus having the same, and method for compensating mura defects |
| CN104992657A (en) * | 2015-07-27 | 2015-10-21 | 京东方科技集团股份有限公司 | Mura compensation module and method, display device and method |
| WO2017035910A1 (en) * | 2015-09-02 | 2017-03-09 | 深圳市华星光电技术有限公司 | Brightness compensation method of mura region and method of designing brightness of mura pixel |
| CN107040770A (en) * | 2016-02-04 | 2017-08-11 | 冠捷投资有限公司 | The scene color temperature dynamic adjusting method and device of display device |
| CN106782422A (en) * | 2017-03-23 | 2017-05-31 | 南京巨鲨显示科技有限公司 | A kind of full frame digital brightness balanced device of liquid crystal display and its bearing calibration |
| CN110827733A (en) * | 2018-08-07 | 2020-02-21 | 奇景光电股份有限公司 | Display method and display device for display panel |
| CN110827733B (en) * | 2018-08-07 | 2023-11-14 | 奇景光电股份有限公司 | Display method and display device for display panel |
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