CN112930564A - Image display device and image processing method - Google Patents
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- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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Abstract
An image display apparatus and an image processing method are disclosed. The display device realizes reduction of afterimages and suppression of luminance reduction. An image display device (1) having a display unit (16) composed of pixels of at least RGBW of four colors, comprising: a determination unit that determines the possibility of afterimage occurrence in the image data (41); and a color correction unit (30) that corrects the image data (41) so that the amount of light emission of W during display is increased and the amount of light emission of at least one of the RGB colors is decreased, based on the result of the determination.
Description
The present application claims priority to the filing of japanese patent application having application number 2019-.
Embodiments of the present application relate to an image display device and an image processing method.
It is known that a portion of a display having a large luminance difference is fixed for a long time and displayed, and the like, and thus, an afterimage is generated. The following techniques are disclosed: in order to reduce such an afterimage, an image in which an afterimage is likely to occur is determined, and if it is determined that an afterimage is likely to occur, the display luminance is lowered.
Prior art documents
Patent document
Patent document 1: japanese patent laid-open publication No. 2011-28149
Disclosure of Invention
However, in the related art, there are problems as follows: although the afterimage is reduced when an image in which the afterimage is likely to occur is displayed, the display luminance is reduced and the visual impression is deteriorated.
An image display device according to an embodiment of the present invention is an image display device using a display in which each pixel is formed of at least 4 colors of RGBW, and includes: a determination unit that determines a possibility of afterimage occurrence in the image data; and a color correction unit that corrects the image data so that the amount of light emission of W at the time of display is increased and the amount of light emission of at least one color of RGB is decreased, based on the result of the determination.
FIG. 1 is a schematic diagram showing an example of an image processing system according to an embodiment;
fig. 2 is a block diagram showing an example of a configuration of a color correction section according to the embodiment;
FIG. 3 is a schematic diagram showing an example of image data and an output image according to the embodiment;
FIG. 4 is a schematic diagram showing an example of image data and an output image according to the embodiment;
fig. 5 is a flowchart showing an example of a flow of image processing according to the embodiment;
FIG. 6 is a schematic diagram showing an example of image data and a comparison output image according to the embodiment;
fig. 7 is a schematic diagram showing an example of an image display device according to a modification.
Description of the reference numerals
10. 10A … image processing units, 22A … afterimage correction units, 30, 31A … color correction units, and 40 … image data.
Hereinafter, the image display apparatus and the image processing method will be described in detail with reference to the drawings.
(first embodiment)
Fig. 1 is a schematic diagram showing an example of an image display device 1 according to the present embodiment.
The image display device 1 includes an image processing unit 10 and a display unit 12. The data subjected to the image processing in the image processing section 10 is transferred to the display section 12 and displayed on the display.
The image processing unit 10 receives image data 40 from a tuner unit, an HDMI (High-Definition Multimedia Interface) (registered trademark) terminal, and the like, not shown. The image processing unit 10 outputs the image data 42 obtained by performing the image processing on the input image data 40 to the display unit 12.
The image processing unit 10 includes an image quality adjustment unit 20 and an afterimage correction unit 22.
The image quality adjustment unit 20 has a function of adjusting a gamma, a hue, a brightness, and the like of the input image data 40. The image quality adjustment unit 20 outputs the image data 41 adjusted by the input image data 40 to the afterimage correction unit 22.
The afterimage correction unit 22 corrects the image data 41 input from the image quality adjustment unit 20 in order to reduce the risk of afterimage. The afterimage correction unit 22 includes a feature data acquisition unit 24, an afterimage risk calculation unit 26, a color correction amount conversion unit 28, and a color correction unit 30.
The afterimage correction unit 22, the feature data acquisition unit 24, the afterimage risk calculation unit 26, the color correction amount conversion unit 28, and the color correction unit 30 may be implemented by hardware, software, or both hardware and software.
The feature data acquiring unit 24 acquires feature data indicating features of an image used for the computation of the risk of afterimage from the image data 41. The feature data is, for example, an APL (Average Picture Level) of the input image and a stationary time. As for the rest time, there is a method of performing calculation using the APL. For example, when the APL is the same as or not much different from the value of the previous frame, it is determined as a still image, and a (count up) still time is calculated. If the value is significantly different from the value of the previous frame, it is determined that the image is not a still image, and the still time is reset (reset). The calculation of the APL and the still time is not limited to the entire screen.
The afterimage risk calculation unit 26 determines the possibility of occurrence of afterimage in the image data. The judgment of the possibility of occurrence of afterimages refers to, for example, judgment of the easiness of occurrence of afterimages, difficulty of occurrence of afterimages, occurrence rate, and the like. The following describes, as an example, a method of determining the ease of occurrence of afterimages. The afterimage risk calculation unit 26 calculates and adjusts the afterimage risk based on the feature data input from the feature data acquisition unit 24. For example, the afterimage risk calculation unit 26 performs the following data conversion: when the stationary time is short, the risk of afterimage is low, and as the stationary time becomes longer, the risk of afterimage becomes higher. For example, the risk of ghosting is represented by values from "0" to "1". For example, the closer to the value "0", the lower the risk of the afterimage, and the closer to the value "1", the higher the risk of the afterimage.
The color correction amount conversion unit 28 calculates and adjusts the color correction amount based on the afterimage risk input from the afterimage risk calculation unit 26. For example, the color correction amount is represented by values of "0" to "1". For example, the correction amount is smaller as the value is closer to "0", and the correction amount is larger as the value is closer to "1". Hereinafter, the color correction amount is sometimes referred to as an afterimage correction gain (gain) (β is 0 to 1).
The color correction section 30 corrects the image data 41 so that the amount of light emission of W at the time of display becomes large and the amount of light emission of at least one color of RGB becomes small, based on the color correction amount input from the color correction amount conversion section 28.
The display unit 12 includes a display driving unit 14 and a display unit 16. The display unit 16 is a display for displaying an image. The display unit 16 is, for example, an OLED (Organic Light Emitting Diode) display, a liquid crystal display, or the like.
The display driving unit 14 performs conversion into a voltage and a current for driving the display unit 16 based on the image data 42 input from the image processing unit 10, and drives the display unit 16.
The color correction section 30 will be described in detail.
Fig. 2 is a block diagram showing an example of the configuration of the color correction section 30. In the present embodiment, the color correction section 30 executes the following processing for each pixel of the image data 41.
The color correction unit 30 includes a chroma calculation unit 30A, a gain conversion unit 30B, a complementary color calculation unit 30C, a multiplication unit 30D, a multiplication unit 30E, and an addition unit 30F.
The saturation calculation unit 30A calculates the saturation of each pixel of the image data 41. As for the chroma, there is a method of subtracting the minimum value (MIN (R, G, B)) from the maximum value (MAX (R, G, B)), but other calculation methods may be used. (R, G, B) indicates a value of R (gradation value), a value of G (gradation value), and a value of B (gradation value) for each pixel of the image data 41.
The gain conversion unit 30B converts the gain value corresponding to the chroma calculated by the chroma calculation unit 30A. For example, the gain conversion unit 30B converts the gain value to a smaller value as the saturation is lower and a larger value as the saturation is higher. For example, the gain value is represented by values "0" to "1" (α is 0 to 1). For example, the gain value is smaller as the value is closer to "0", and the gain value is larger as the value is closer to "1". Hereinafter, this gain value will be sometimes referred to as a chroma correction gain.
The complementary color calculation unit 30C calculates the complementary color of each pixel of the image data 41. For example, the complementary colors (R ', G ', B ') are represented by the following formulas (1) to (3).
R ═ MAX (R, G, B) + MIN (R, G, B) -R … formula (1)
G ═ MAX (R, G, B) + MIN (R, G, B) -G … formula (2)
B ═ MAX (R, G, B) + MIN (R, G, B) -B … formula (3)
The multiplier 30D multiplies the complementary colors (R ', G ', B ') calculated by the complementary color calculation unit 30C by the chroma correction gain α (0 to 1) converted by the gain conversion unit 30B. The correction amount is represented by (α R ', α G ', α B ').
The multiplier 30E multiplies the correction amounts (α R ', α G ', α B ') input from the multiplier 30D by the afterimage correction gain (β) corresponding to the afterimage risk input from the color correction amount conversion unit 28. Therefore, the multiplication unit 30E calculates the correction amounts (α β R ', α β G ', α β B ').
The adder 30F adds the correction amounts (α β R ', α β G ', α β B ') input from the multiplier 30E to the image data 41. The adder 30F outputs the image data 42(R + α β R ', G + α β G ', B + α β B ') after the addition to the display 12. When the image data 42 is represented by 8 bits and 0 to 255, R + α β R' may have a value larger than 255. When the value is larger than 255, 255 may be used.
The above-described calculations of α, β and (R, G, B) are merely examples, and are not limited to the above-described calculation methods.
The image data 42 corrected by the image processing unit 10 is input to the display driving unit 14 of the display unit 12. The display driving section 14 performs conversion into a voltage value and a current value corresponding to the input image data 42, and drives the display section 16.
The display unit 16 is a display in which each pixel is formed of at least 4 colors of RGBW. Therefore, the display driving unit 14 converts RGB into RGBW with respect to the input image data 42, and drives the display unit 16.
When the correction is performed by the afterimage correction section 22, the display section 16 displays the image so that the light emission amount of W is larger and the light emission amount of at least one of the RGB colors is smaller than that when the correction is not performed.
In a display including 4 pixels of RGBW, RGB light emission efficiency is lower than W light emission efficiency, and image sticking is likely to occur in many cases. Therefore, as in this embodiment, when correction is performed so that the light emission amount of W is increased and the light emission amount of at least one of RGB is decreased, afterimage can be reduced as compared with the case where correction is not performed.
Fig. 3 shows an example of the case where the image sticking correction section 22 performs correction, and the input image is 41A and the output image is 42A.
For example, when the input image 41A has all pixels (R, G, B) ═ 192,0, and it is determined that the risk of image sticking is higher than the criterion for correction and the image sticking correction unit 22 performs color correction, the output image 42A is corrected to have each pixel (R, G, B) ═ 192,64, for example. Since the value of B after correction is larger than that before correction, no decrease in luminance occurs.
When the display driving unit 14 converts the input RGB into RGBW, the following equation may be used, for example.
R-MIN (R, G, B) formula (4)
G-MIN (R, G, B) formula (5)
B-MIN (R, G, B) formula (6)
MIN (R, G, B) formula (7)
Therefore, when the input image data is (R, G, B) ═ (192, 0), the display driving unit 14 changes to (R, G, B, W) ═ (192, 0, 0).
When the input image data to the display driving unit 14 is (R, G, B) ═ (192, 64), the input image data is converted into (R, G, B, W) ═ (128, 0, 64).
In this way, when the afterimage correction unit 22 performs correction, the value of W becomes larger and the values of R and G become smaller in the value converted into RGBW in the display driving unit 14 than in the case where no correction is performed, thereby reducing afterimage.
Fig. 4 shows an example in which the image sticking correction section 22 performs correction, and the input image is 41B and the output image is 42B.
For example, it is assumed that the input image 41B includes a plurality of regions (region a, region B, and region C). It is assumed that the region a is (R, G, B) ═ 128,128,128, the region B is (R, G, B) ═ 0,224,0, and the region C is (R, G, B) ═ 16,192,192.
In this case, the RGB of each region (region a, region B, and region C) is corrected as follows by the afterimage correction section 22 executing the above-described processing. For example, the region a is corrected to (R, G, B) ═ 128,128,128, the region B is corrected to (R, G, B) ═ 32,224,32, and the region C is corrected to (R, G, B) ═ 30,192,192.
In this way, the corrected data becomes larger than the value before correction, and the luminance does not decrease. Furthermore, since W increases after RGBW conversion, at least one value of RGB becomes smaller, and thus the risk of ghosting is reduced.
Next, an example of the flow of image processing executed by the image processing unit 10 according to the present embodiment will be described.
Fig. 5 is a flowchart showing an example of the flow of image processing executed by the image processing unit 10 according to the present embodiment.
The feature data acquisition unit 24 calculates feature data for afterimage risk calculation from the image data 41 (step S102). The afterimage risk calculation unit 26 calculates an afterimage risk from the feature data calculated in step S102 (step S104). The color correction amount conversion unit 28 calculates and adjusts an afterimage correction gain (β) based on the afterimage risk calculated in step S104 (step S106).
The saturation calculation unit 30A calculates the saturation of each pixel of the image data 40 (step S108). The gain conversion unit 30B converts the chroma correction gain (α) corresponding to the chroma calculated by the chroma calculation unit 30A (step S110). The complementary color calculation section 30C calculates the complementary colors (R ', G ', B ') of the respective pixels of the image data 41 (step S112).
The multiplication unit 30D multiplies the complementary color (R ', G ', B ') calculated in step S112 by the chroma correction gain (α) converted in step S110 (step S114).
The multiplier 30E multiplies the correction amounts (R ' α, G ' α, B ' α) calculated in step S114 by the afterimage correction gain (β) calculated in step S106 (step S116).
The adder 30F adds the correction amounts (α β R ', α β G ', α β B ') calculated in step S114 to the image data 41 (step S118). The present routine is then ended.
As described above, the image display device 1 according to the present embodiment is an image display device 1 using a display (display unit 16) in which each pixel is formed of at least 4 colors of RGBW, and includes: a determination unit (afterimage risk calculation unit 26) that determines the possibility of afterimage occurrence in the image data 41; and a color correction unit 30 that corrects the image data 41 so that the amount of light emission of W during display increases and the amount of light emission of at least one color of RGB decreases, based on the determination result.
Therefore, the image display device 1 of the present embodiment can reduce the risk of afterimage generation without lowering the luminance.
On the other hand, in the past, a reduction in display luminance occurred due to the afterimage correction processing.
Fig. 6 shows an example of a conventional case in which correction is performed, and an input image is 41A and an output image is 40B.
For example, the input image 40A has a full pixel (R, G, B) ═ (192, 0), and when the conventional correction process for reducing the afterimage is performed, the output image 40B is corrected to have a (R, G, B) ═ (128, 0). The decrease in brightness occurs because the value of RG becomes smaller than before correction.
On the other hand, in the present embodiment, the color correction section 30 corrects the image data 41 so that the light emission amount of W at the time of display becomes large and the light emission amount of at least one color of RGB becomes small, based on the determination result of the easiness of occurrence of the afterimage.
Therefore, the image display device 1 of the present embodiment can reduce the afterimage and suppress the reduction in luminance which has occurred in the afterimage correction in the past. Further, since the image display device 1 according to the present embodiment can perform natural color correction without lowering the luminance, it is possible to improve the visual impression of the image data 42.
The type of the display unit 16 for displaying the image data 42 is not limited. From the viewpoint of effectively reducing the image sticking and suppressing the decrease in luminance, the risk of image sticking occurring when R, G or B is driven for a certain time is higher than the risk of image sticking occurring when W is driven for a certain time, and is effective in an OLED display.
(second embodiment)
Fig. 7 is a schematic diagram showing an example of the image processing unit 10A according to the present modification. The same reference numerals are assigned to the same functional portions as those of the first embodiment, and detailed description thereof is omitted.
The image processing unit 10A includes an image quality adjustment unit 20 and an afterimage correction unit 22A. The afterimage correction unit 22A includes a feature data acquisition unit 24A, an afterimage risk calculation unit 26A, a color correction amount conversion unit 28A, an interpolation unit 29A, and a color correction unit 31A.
The afterimage correction unit 22A corrects the image data 41 to reduce the risk of afterimage, as in the case of the afterimage correction unit 22 of the first embodiment.
In the present modification, the afterimage correction unit 22A uses the afterimage risk calculated for each block (block). A block is a single area in which a part of the entire screen or the entire screen and a part of the entire screen are divided into a plurality of blocks.
The feature data acquisition unit 24A calculates feature data for each block of the image data 41. The feature data acquisition unit 24A calculates feature data in the same manner as the feature data acquisition unit 24 except that the feature data acquisition unit calculates feature data for each block of the image data 41 instead of the entire screen of the image data 41.
The afterimage risk calculation unit 26A calculates and adjusts the afterimage risk based on the feature data input from the feature data acquisition unit 24A.
The interpolation unit 29A corrects the difference in the amount of image sticking correction between adjacent blocks and between adjacent pixels in a block within a predetermined range. Specifically, the interpolation unit 29A performs the smoothing process so that the difference N between the correction amounts is not excessively large.
The color correction unit 31A corrects the image data 41 using the amount of image sticking correction input from the interpolation unit 29A.
As described above, the afterimage correction unit 22A may correct the image data 41 using the afterimage risk calculated for a part of the entire screen or for each of the entire screen and the blocks into which a part of the entire screen is divided.
The afterimage correction unit 22A is not limited to the block, and may calculate and adjust the risk of afterimage for the entire screen, the specific area within the screen, the specific areas within the screen, each block obtained by dividing the inside of the specific area into a plurality of blocks, or each pixel of the specific area.
The feature data acquiring unit 24A may calculate feature data for the entire screen, a plurality of specific regions in the screen, a specific region in the screen, each block obtained by dividing the inside of the specific region into a plurality of blocks, or each pixel of the specific region. The afterimage risk calculation unit 26A may calculate and adjust the afterimage risk based on the feature data input from the feature data acquisition unit 24A.
The color correction section 31A may correct the image data 41 for each pixel based on the easiness of occurrence of the afterimage, which is determined for the entire screen, a plurality of specific regions within the screen, a specific region within the screen, each of blocks obtained by dividing the inside of the specific region into a plurality of blocks, or each of pixel units of the specific region. The color correction section 31A may correct the image data 41 for the entire screen, a plurality of specific regions within the screen, a specific region within the screen, each block obtained by dividing the inside of the specific region into a plurality of blocks, or each pixel unit of the specific region.
The embodiments and modifications of the present application have been described above, but the embodiments and modifications are presented as examples and do not limit the scope of the application. The new embodiment and the modification can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. The above-described embodiments and modifications thereof are included in the scope and gist of the application, and are included in the invention described in the claims and the equivalent scope thereof.
Claims (7)
- An image display device using a display in which each pixel is formed of at least four colors of RGBW, the image display device comprising:a determination unit for determining the possibility of afterimage occurrence in the image data, anAnd a color correction unit that corrects the image data so that the amount of light emission of W at the time of display is increased and the amount of light emission of at least one color of RGB is decreased, based on the result of the determination.
- The image display device according to claim 1,the color correction unit corrects the image data based on the result of the determination and a correction amount calculated based on a complementary color of the image data.
- The image display device according to claim 2,the color correction section corrects the image data based on the result of the determination, the saturation, and the correction amount.
- The image display device according to any one of claims 1 to 3,the determination unit determines the possibility of occurrence of a ghost for the entire screen, a specific region within the screen, a plurality of specific regions within the screen, each block obtained by dividing the inside of the specific region into a plurality of blocks, or each pixel of the specific region.
- The image display device according to any one of claims 1 to 4,the color correction unit corrects the image data for the entire screen, a specific region within the screen, a plurality of specific regions within the screen, each of the blocks obtained by dividing the inside of the specific region into a plurality of blocks, or each of the pixels of the specific region, based on the result of the determination.
- The image display device according to claim 5,the color correction section corrects a difference in an amount of residual image correction between adjacent blocks or between adjacent pixels in the blocks within a predetermined range.
- An image processing method executed in an image display apparatus using a display in which each pixel is composed of at least four colors of RGBW, the image processing method comprising:a judgment step of judging a possibility of occurrence of afterimage in the image data, anAnd a correction step of correcting the image data so that the light emission amount of W at the time of display becomes large and the light emission amount of at least one color of RGB becomes small, based on a result of the determination.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006235325A (en) * | 2005-02-25 | 2006-09-07 | Sony Corp | Method for correcting image persistence phenomenon, spontaneous light emitting device, device and program for correcting image persistence phenomenon |
| US20070024772A1 (en) * | 2005-07-28 | 2007-02-01 | Childers Winthrop D | Display with sub-region backlighting |
| JP2011257515A (en) * | 2010-06-08 | 2011-12-22 | Panasonic Corp | Driving method for plasma display panel and plasma display device |
| CN103886829A (en) * | 2012-12-21 | 2014-06-25 | 乐金显示有限公司 | Organic light emitting display device and driving method thereof |
| CN104376833A (en) * | 2014-11-19 | 2015-02-25 | 深圳市华星光电技术有限公司 | System and method for converting RGB data into RGBW data |
| CN104867449A (en) * | 2015-05-29 | 2015-08-26 | 青岛海信电器股份有限公司 | Display and pixel compensation method thereof |
| CN106097945A (en) * | 2016-08-17 | 2016-11-09 | 京东方科技集团股份有限公司 | Damaged picture detection method, damaged picture removing method and device and display device |
| CN106205485A (en) * | 2015-05-28 | 2016-12-07 | 乐金显示有限公司 | Image processing method, image processing circuit and use its organic LED display device |
| CN106409254A (en) * | 2016-10-08 | 2017-02-15 | 武汉华星光电技术有限公司 | RGB (red, green and blue)-to-RGBW(red, green, blue and white) color gamut conversion method and device |
| CN106611584A (en) * | 2015-10-21 | 2017-05-03 | 乐金显示有限公司 | Display device and driving method thereof |
| CN107424559A (en) * | 2017-08-23 | 2017-12-01 | 京东方科技集团股份有限公司 | The display control method and device of display device |
| CN109065568A (en) * | 2018-07-06 | 2018-12-21 | 青岛海信电器股份有限公司 | A kind of WOLED panel and WOLED display device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014126698A (en) | 2012-12-26 | 2014-07-07 | Sony Corp | Self-luminous display device |
| CN105336288B (en) * | 2014-08-15 | 2018-02-16 | Tcl集团股份有限公司 | A kind of rgb signal is to the conversion method of RGBW signals, device and TV |
| KR101990335B1 (en) * | 2014-11-14 | 2019-10-02 | 엘지디스플레이 주식회사 | Data clipping method and device, and display device using the same |
| KR102070322B1 (en) * | 2015-08-28 | 2020-01-28 | 삼성전자주식회사 | Display apparatus and display panel driving method thereof |
| CN107316609B (en) * | 2017-08-21 | 2019-05-24 | 京东方科技集团股份有限公司 | A kind of color-complementing method of WOLED display device, WOLED display device |
-
2019
- 2019-08-01 JP JP2019141913A patent/JP7038684B2/en active Active
-
2020
- 2020-07-31 WO PCT/CN2020/106294 patent/WO2021018293A1/en active Application Filing
- 2020-07-31 CN CN202080004652.6A patent/CN112930564B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006235325A (en) * | 2005-02-25 | 2006-09-07 | Sony Corp | Method for correcting image persistence phenomenon, spontaneous light emitting device, device and program for correcting image persistence phenomenon |
| US20070024772A1 (en) * | 2005-07-28 | 2007-02-01 | Childers Winthrop D | Display with sub-region backlighting |
| JP2011257515A (en) * | 2010-06-08 | 2011-12-22 | Panasonic Corp | Driving method for plasma display panel and plasma display device |
| CN103886829A (en) * | 2012-12-21 | 2014-06-25 | 乐金显示有限公司 | Organic light emitting display device and driving method thereof |
| CN104376833A (en) * | 2014-11-19 | 2015-02-25 | 深圳市华星光电技术有限公司 | System and method for converting RGB data into RGBW data |
| CN106205485A (en) * | 2015-05-28 | 2016-12-07 | 乐金显示有限公司 | Image processing method, image processing circuit and use its organic LED display device |
| CN104867449A (en) * | 2015-05-29 | 2015-08-26 | 青岛海信电器股份有限公司 | Display and pixel compensation method thereof |
| CN106611584A (en) * | 2015-10-21 | 2017-05-03 | 乐金显示有限公司 | Display device and driving method thereof |
| CN106097945A (en) * | 2016-08-17 | 2016-11-09 | 京东方科技集团股份有限公司 | Damaged picture detection method, damaged picture removing method and device and display device |
| CN106409254A (en) * | 2016-10-08 | 2017-02-15 | 武汉华星光电技术有限公司 | RGB (red, green and blue)-to-RGBW(red, green, blue and white) color gamut conversion method and device |
| CN107424559A (en) * | 2017-08-23 | 2017-12-01 | 京东方科技集团股份有限公司 | The display control method and device of display device |
| CN109065568A (en) * | 2018-07-06 | 2018-12-21 | 青岛海信电器股份有限公司 | A kind of WOLED panel and WOLED display device |
Non-Patent Citations (1)
| Title |
|---|
| 解红军等: "一种针对AMOLED器件劣化的电学补偿技术", 《液晶与显示》 * |
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| WO2021018293A1 (en) | 2021-02-04 |
| CN112930564B (en) | 2022-10-04 |
| JP7038684B2 (en) | 2022-03-18 |
| JP2021026064A (en) | 2021-02-22 |
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