CN101996618B - Control method for increasing brightness consistency, brightness correction controller - Google Patents

Control method for increasing brightness consistency, brightness correction controller Download PDF

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CN101996618B
CN101996618B CN 200910168325 CN200910168325A CN101996618B CN 101996618 B CN101996618 B CN 101996618B CN 200910168325 CN200910168325 CN 200910168325 CN 200910168325 A CN200910168325 A CN 200910168325A CN 101996618 B CN101996618 B CN 101996618B
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input pixel
brightness
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CN101996618A (en
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陈星全
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Novatek Microelectronics Corp
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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

Promote control method and the gamma correction controller of brightness uniformity
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 associated luminance correcting controller and the display device of gamma correction.
Background technology
Along with the 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 take liquid crystal indicator as example, because the Luminance Distribution of back lighting device is even not, and the difference that is used for driving liquid crystal optics characteristic in the magnitude of voltage of pixel and pixel, cause the brightness performance of general liquid crystal indicator can't reach good consistance, therefore need to be by other method compensation, make the brightness can be even.Angle from ordinary consumer, if examine one without the liquid crystal indicator of gamma correction with naked eyes, just can find that the brightness performance between viewing areas different in liquid crystal indicator often is not quite similar, if further measured with photometer, can find different pixels when performance same grayscale data, its brightness value often has no small difference.Wherein, at 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 in the Design Stage of display device, add to supply circuit and the function of gamma correction, and add rigorous gamma correction program in the production run of display device.At last, when normal mode 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 picture can meet the standard of high image quality when display device.
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 due to all factors, between any two pixels without the display device of gamma correction, its brightness of exporting when the input gray level value is identical can not equate that usually very large error is even 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 inputting is adjusted, and produces a new gray-scale value, and when to make gray-scale value that two pixels are inputted be 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 picture is quite surprising, if will carry out gamma correction between pixel and pixel, completing 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 completing 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 larger, 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 is to provide a kind of control method and associated luminance correcting controller and display device that is used for promoting brightness uniformity.
The present invention discloses the control method of the brightness uniformity of a kind 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 corresponding gray-scale value of this input pixel, obtain 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 reach these a plurality of certain luminance corrected values according to the sampling coordinate figure of corresponding 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 the gamma correction controller of the brightness uniformity of a kind 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 a gray-scale value corresponding according to 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 the sampling coordinate figure of this coordinate figure corresponding according to this input pixel, these a plurality of adjacent samples pixels to reach these a plurality of certain luminance corrected values, 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 input pixels a plurality of according to this one the 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; 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 a gray-scale value corresponding according to 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 the sampling coordinate figure of this coordinate figure corresponding according to this input pixel, these a plurality of adjacent samples pixels to reach these a plurality of certain luminance corrected values, 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 present invention.
Fig. 2 A and 2B are the schematic diagram that an input pixel reaches the position relationship of 4 contiguous pixels sampled in picture.
Fig. 3 is the flow process schematic 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 gray scale, after coordinate conversion, be transformed into a kind of linear relationship among new coordinate.Thus, can utilize linear interpolation, derive in each pixels sampled other without brightness and gray-scale relation that reality measures, become the exclusive linearity correction function of each pixels sampled.Then, with the linearity correction function ratio of the linearity correction function of pixels sampled and benchmark pixel, can judge each gray-scale value of each pixels sampled and the relation between the new gray-scale value after adjustment, be intensity correction values δ E, and calculate according to this, derive the brightness look-up table (Gamma Table) of each pixels sampled.Usually the minimum ratio that only accounts for total pixel number in picture due to the pixels sampled number on picture (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 normal mode operates, comprise that all pixels of pixels sampled all need to carry out gamma correction when display device, 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 present 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 sequentially is arranged in a matrix, and the partial 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 that receives~INP_n 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 pixels sampled SP_a, SP_b, SP_c, SP_d adjacent with input pixel INP_i in pixels sampled SP_1~SP_M.Look-up table reading unit 224 use causes are searched brightness look-up table GAT_a, GAT_b, GAT_c, the GAT_d that reads in 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 corresponding 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 in brightness look-up table GAT_a, GAT_b, GAT_c, 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 inputting pixel INP_i and pixels sampled SP_a, SP_b, the corresponding 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 result to panel PANEL.
In simple terms, when image receiving element 100 receives input pixel INP_i, adjacent samples pixel judging unit 222 is first judged the pixels sampled SP_a adjacent with inputting pixel INP_i, SP_b, SP_c, SP_d, makes look-up table reading unit 224 obtain corresponding brightness look-up table GAT_a, GAT_b, GAT_c, GAT_d in 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 to the gray-scale value GL_i that inputs 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, the intensity correction values δ E_i of judgement input pixel INP_i.Thus, search panel PANEL partial pixel in storer 220 and (be the brightness look-up table of pixels sampled SP_1~SP_M), can carry out gamma correction to all pixels as long as utilize to be stored in.
Should be noted, display device 10 shown in Figure 1 is embodiments of the invention, and those skilled in the art can do different modifications according to this, and is not limited to this.For instance, adjacent with input pixel INP_i pixels sampled SP_a~SP_d 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 inputting pixel INP_i and pixels sampled SP_a~SP_d, the distance of judgement input pixel INP_i and pixels sampled SP_a~SP_d, calculate according to this again intensity correction values δ E_a, δ E_b, δ E_c, δ E_d corresponding to the weighted value of intensity correction values δ E_i, to draw 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, the intensity correction values of this adjacent samples pixel contribute to the weighted value of intensity correction values δ E_i will be less; Otherwise near if distance heals, corresponding 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 schematic diagram of the position relationship 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 according to the distance that indicates in 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 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, searches storer 220 and can be realized by a built-in flash memory (flash memory); Otherwise, if the data volume of brightness look-up table GAT_1~GAT_M is larger, can increases by an external dynamic RAM (dynamic RAM) and realize searching storer 220.In addition, can additionally increase by a high-speed cache between look-up table reading unit 224 and corrected value reading unit 228, as static RAM (static RAM), be used for increasing data reading speed.For example, if the data volume of brightness look-up table GAT_1~GAT_M is less, in when start, look-up table reading unit 224 can (comprise GAT_a~GAT_d), be sent in 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 larger, and 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.Should be noted, aforementioned is the possible storage interface of explanation gamma correction controller 102, and it does not conflict with main spirits of the present invention, and those skilled in the art can according to the different system demand, do suitable variation.
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 be summarized as 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 according to the coordinate figure of input pixel INP_i and pixels sampled SP_1~SP_M, and adjacent samples pixel SP_a, SP_b, SP_c, the SP_d of pixel INP_i inputted in judgement.
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 in brightness look-up table GAT_a, GAT_b, GAT_c, 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 result to panel PANEL.
Step 312: finish.
The detailed description of control flow 30 can with reference to aforementioned, be not repeated herein.
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 picture obtain gamma correction, can meet the standard of high image quality except the brightness uniformity that can make all pixels in picture, can reduce storage requirement simultaneously, to reduce costs.
The above is only 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 (12)

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 corresponding gray-scale value of this input pixel, obtain 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
According to sampling coordinate figure and these a plurality of certain luminance corrected values of corresponding this coordinate figure of this input pixel, these a plurality of adjacent samples pixels, calculate an intensity correction values of this input pixel;
It is characterized in that, a plurality of brightness look-up table Zhi Bu Sudden that obtain these a plurality of adjacent samples pixels include:
Utilize a transfer function that brightness and the relation between gray scale that each pixels sampled measures are carried out coordinate conversion;
Utilize a linear interpolation, derive in each pixels sampled other without the brightness and the gray-scale relation that measure, to obtain each pixels sampled one linearity correction function; And
According to this linearity correction function, derive the brightness look-up table of each pixels sampled.
2. control method as claimed in claim 1, it also comprises the brightness look-up table that stores 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 corresponding this coordinate figure of this input pixel, these a plurality of adjacent samples pixels, calculate this intensity correction values of this input pixel, includes:
According to the sampling coordinate figure of this input corresponding 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
Distances a plurality of according to this in the mode of a weighted sum, are calculated these a plurality of certain luminance corrected values corresponding to a plurality of weighted values of this intensity correction values of this input pixel, to calculate 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 element 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 a gray-scale value corresponding according to 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 the sampling coordinate figure of this coordinate figure corresponding according to this input pixel, these a plurality of adjacent samples pixels to reach these a plurality of certain luminance corrected values, calculates an intensity correction values of this input pixel;
It is characterized in that, this gamma correction controller utilizes a transfer function that brightness and the relation between gray scale that each pixels sampled measures are carried out coordinate conversion; Utilize a linear interpolation, derive in each pixels sampled other without the brightness and the gray-scale relation that measure, to obtain each pixels sampled one linearity correction function; And according to this linearity correction function, derive the brightness look-up table of each pixels sampled.
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 these a plurality of brightness look-up tables of temporary 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 the sampling coordinate figure of this coordinate figure corresponding according to 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 distances a plurality of according to this, in a weighted sum mode, calculate these a plurality of certain luminance corrected values corresponding to a plurality of weighted values of this intensity correction values of this input pixel, to calculate 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.
CN 200910168325 2009-08-27 2009-08-27 Control method for increasing brightness consistency, brightness correction controller Expired - Fee Related CN101996618B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9818335B2 (en) 2013-09-27 2017-11-14 Hon Hai Precision Industry Co., Ltd. Display with apparatus for compensating image and display assembly

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104517535B (en) * 2013-09-27 2017-11-07 鸿富锦精密工业(深圳)有限公司 Display device, spliced display and display panel
CN104021761B (en) * 2014-05-30 2016-03-09 京东方科技集团股份有限公司 A kind of luminance compensation method of display device, device and display device
CN104021773B (en) 2014-05-30 2015-09-09 京东方科技集团股份有限公司 A kind of luminance compensation method of display device, luminance compensating mechanism and display device
CN104992657B (en) * 2015-07-27 2017-09-22 京东方科技集团股份有限公司 Mura compensating modules and method, display device and method
CN105070273B (en) * 2015-09-02 2017-07-28 深圳市华星光电技术有限公司 The luminance compensation method in Mura regions and the design method of Mura pixel brightness
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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
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1753061A (en) * 2004-09-22 2006-03-29 索尼株式会社 Image display unit and method of correcting brightness in image display unit
US20060221326A1 (en) * 2005-03-29 2006-10-05 Eastman Kodak Company Method and apparatus for uniformity and brightness correction in an OLED display
US20070070085A1 (en) * 2005-09-29 2007-03-29 Sony Corporation Display image correcting device, image display device, and display image correcting method
CN1971680A (en) * 2005-11-24 2007-05-30 索尼株式会社 Image display apparatus and method, program therefor, and recording medium having recorded thereon the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1753061A (en) * 2004-09-22 2006-03-29 索尼株式会社 Image display unit and method of correcting brightness in image display unit
US20060221326A1 (en) * 2005-03-29 2006-10-05 Eastman Kodak Company Method and apparatus for uniformity and brightness correction in an OLED display
US20070070085A1 (en) * 2005-09-29 2007-03-29 Sony Corporation Display image correcting device, image display device, and display image correcting method
CN1971680A (en) * 2005-11-24 2007-05-30 索尼株式会社 Image display apparatus and method, program therefor, and recording medium having recorded thereon the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9818335B2 (en) 2013-09-27 2017-11-14 Hon Hai Precision Industry Co., Ltd. Display with apparatus for compensating image and display assembly

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