WO2015090060A1 - 修复缺陷像素的方法、系统及显示面板 - Google Patents
修复缺陷像素的方法、系统及显示面板 Download PDFInfo
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- WO2015090060A1 WO2015090060A1 PCT/CN2014/082564 CN2014082564W WO2015090060A1 WO 2015090060 A1 WO2015090060 A1 WO 2015090060A1 CN 2014082564 W CN2014082564 W CN 2014082564W WO 2015090060 A1 WO2015090060 A1 WO 2015090060A1
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- 230000002950 deficient Effects 0.000 title claims abstract description 147
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008439 repair process Effects 0.000 claims abstract description 80
- 230000000694 effects Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 14
- 230000007547 defect Effects 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 206010070834 Sensitisation Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136259—Repairing; Defects
Definitions
- Embodiments of the present invention relate to a method of repairing defective pixels, a system for repairing defective pixels, and a repaired display panel. Background technique
- the specific equipment maintenance method is that the device is positioned to the defective pixel, and the person manually aligns the black matrix diffusion laser to the pixel region to perform laser irradiation, and the laser irradiates the alignment film to damage the alignment film to weaken the alignment characteristic of the liquid crystal.
- the light transmittance of the liquid crystal eliminates the light leakage phenomenon, and the laser is irradiated while the light is adjusted during the maintenance process to confirm the maintenance effect.
- Embodiments of the present invention provide a method for repairing defective pixels, a system for repairing defective pixels, and a repaired display panel, which can automatically repair bright pixels.
- an embodiment of the present invention provides a method for repairing a defective pixel, comprising: centering the defective pixel to acquire a center coordinate of the defective pixel; and repairing the defective pixel according to the central coordinate.
- an embodiment of the present invention further provides a system for repairing a defective pixel, comprising: a center positioning unit, centrally positioning the defective pixel to obtain a center of the defective pixel And a repair unit that repairs the defective pixel according to the center coordinate.
- an embodiment of the present invention further provides a display panel, wherein the display panel is a display panel repaired by the method for repairing defective pixels.
- Embodiment 1 is a pixel coordinate positioning of a defective pixel according to Embodiment 1 of the present invention
- FIG. 3 is a schematic diagram of a lens positioned in a pixel coordinate of a defective pixel according to Embodiment 1 of the present invention
- FIG. 4 is a schematic diagram of a lens positioned at a center coordinate of a defective pixel according to Embodiment 1 of the present invention
- Schematic diagram of adjusting the brightness in the middle
- FIG. 6 is a schematic diagram of performing laser automatic repair in the first embodiment of the present invention.
- FIG. 7 is a schematic diagram of detecting a repair effect according to Embodiment 1 of the present invention.
- FIG. 8 is a block diagram of a system for repairing defective pixels according to a second embodiment of the present invention
- FIG. 9 is a block diagram of a central positioning unit provided in Embodiment 2 of the present invention.
- FIG. 10 is a structural block diagram of a repair monitoring unit provided in Embodiment 2 of the present invention.
- FIG. 11 is a structural block diagram of a detection module provided in Embodiment 2 of the present invention. detailed description
- Embodiment 1 of the present invention provides a method for repairing a defective pixel, including the following steps: Step S1: Centering the defective pixel to obtain the center coordinate of the defective pixel; Step S2, repairing the defective pixel according to the central coordinate.
- the center coordinates of the defective pixels are accurately positioned, and then the defective pixels are repaired according to the central coordinates, since no manual treatment is required.
- the repaired defective pixels are precisely positioned to improve the speed and accuracy of the repair.
- the obtained central coordinate may have a certain deviation within the allowable range, that is, the obtained central coordinate may have a certain deviation from the precise central coordinate, but the deviation is within the allowable range.
- the central coordinate is the approximate center coordinate of the pixel area, which is not limited by the embodiment of the present invention, which may be determined according to a specific situation, if the pixel area is a regular shape, For example, a square, then the center coordinates determined here are the exact center coordinates.
- the method before performing central positioning on the defective pixel to obtain the center coordinate of the defective pixel in step S1 of the embodiment, the method further includes performing defect pixel positioning, obtaining pixel coordinates of the defective pixel, and obtaining pixel coordinates and a center.
- the coordinates do not coincide.
- the center coordinate of the lens image is as shown by the cross-shaped mark in the figure, that is, the pixel center of the lens image is aligned with a pixel coordinate in the pixel region where the defective pixel is located. , not at the center of the pixel area, as can be seen from Fig.
- the pixel coordinates Add ( X, Y ) of the pixel area are located at the center-right position.
- the lens can only be moved to the pixel area of the defective pixel by aligning the pixel coordinates of the defective pixel, and the movement precision can only be guaranteed within the pixel area, but it is necessary to perform the repair process in advance.
- the center of the pixel area is precisely positioned, that is, the center coordinates are found, and the center coordinates are located at the center point of the defective pixel.
- performing central positioning on the defective pixel includes:
- the abscissa of the center coordinate is calculated according to the upper edge coordinate and the lower edge coordinate, and the ordinate of the center coordinate is calculated according to the left edge coordinate and the right edge coordinate, and the center coordinate is obtained.
- the steps of the coordinate include: scanning from the pixel coordinates in four directions of up, down, left, and right respectively, and when the gray value corresponding to the pixel coordinate changes, determining the coordinates when the four gray values change.
- the upper edge coordinate, the lower edge coordinate, the left edge coordinate, and the right edge coordinate respectively.
- the center of the lens picture is not at the center of the defective pixel area, and its coordinates (that is, pixel coordinates) are Add ( X, Y ), according to the color of the target pixel (in the embodiment, green is taken as an example)
- the square starts scanning until it reaches the upper edge of the pixel area, because the area except the pixel area is covered by the black matrix, so the gray value will change from the original green gray value to the black gray value, thus determining the defect
- the upper edge of the pixel area, that is, the upper edge coordinate scanned up along the pixel coordinate Add (X, Y) is Offset U.
- the edge coordinates of the other three directions are determined, and scanning is performed downward until scanning to the lower edge of the defective pixel area to obtain the lower edge coordinate Offset D; scanning to the left until scanning to the left edge of the defective pixel area, The left edge coordinate Offset L is obtained; scanning is performed to the right until scanning to the right edge of the defective pixel area, and the right edge coordinate Offset R is obtained.
- scanning up and down with the pixel coordinates as the center means that the X coordinate is constant, and the image is scanned up and down along the Y-axis direction with the pixel coordinates as the center, and the pixel coordinates are centered on the pixel coordinate to the left.
- Scanning to the right means scanning left and right along the X-axis direction centering on the pixel coordinates when the Y coordinate is not changed.
- the pixel area shown in FIG. 2 is an irregular area, which is only an example. Actually, the pixel area is determined according to actual conditions, and for an irregular pixel area, centered on pixel coordinates.
- the upper, lower, left, and right edges of the scan of the lower, left, and right scans may not be the uppermost edge, the lowermost edge, the leftmost edge, and the rightmost edge of the pixel region, but the center coordinates thus determined are also Within the tolerance of the error.
- the pixel area is a regular shape, for example, a rectangle
- the upper edge, the lower edge, the left edge, and the right edge determined above are the uppermost edge, the lowermost edge, the leftmost edge, and the rightmost edge of the pixel region, thereby
- the determined center coordinates are the exact center coordinates.
- the lens After determining the center coordinates of the defective pixel, move the lens to the position of the center coordinate, as shown in Figure 2.
- the cross mark in Fig. 2 is the position of the center coordinate of the pixel area.
- the laser is aimed at the center coordinate of the defective pixel, and the surrounding black matrix is pulverized and diffused, thereby realizing physical shading, thereby realizing the effect of repairing the defective pixel.
- the method for repairing a defective pixel in this embodiment further includes the step of monitoring the repair result, including:
- the brightness of the defective pixel area is detected to obtain a preset brightness
- the unrepaired pixel is occluded to perform brightness detection on the repaired defective pixel to obtain a repaired brightness
- the repair effect is determined based on the preset brightness and the repair brightness.
- a sensitization test module is added to the black matrix (BM) diffusion repair optical path.
- S the preset luminance level of the defective pixel region
- SA Fixing pixels for occlusion to detect the brightness of the repaired defective pixels, and obtaining the repaired brightness at this time is SA (cd/m 2 ), and further monitoring whether the repair effect is qualified according to the size of S and SA Judging, the criteria are:
- the decision width may be a value of approximately 0, or other values, the implementation of the present invention
- the comparison of the examples is not limited, and the judgment threshold can be set according to experiments or needs.
- the lens moves to the pixel area of the defective pixel, and is positioned at the pixel coordinate Add ( X, Y ). As shown in Figure 3, the lens is positioned on the pixel area where the defective pixel is located, that is, positioned on the pixel coordinates.
- the defective pixel is in the column where the green pixel is located, the left column is the red pixel, and the right column is the blue pixel.
- the laser repairing device can repair the defective pixel according to the central coordinate, and a schematic diagram of performing automatic laser repair is shown in FIG. 6.
- the repair effect is also detected; exemplarily, the unrepaired pixel is occluded to perform brightness detection on the repaired defective pixel to obtain the repaired brightness; and the repair effect is corrected according to the preset brightness and the repaired brightness.
- a determination is made in which the preset brightness is obtained by detecting the brightness level of the defective pixel before performing the repair.
- a schematic diagram for detecting the repair effect is shown in Fig. 7.
- the center coordinates of the defective pixels on the display panel can be positioned to achieve accurate positioning, and then the defective pixels are repaired according to the obtained central coordinates, and the center coordinate positioning is automatically replaced.
- the original manual alignment operation not only speeds up the repair of defective pixels, but also improves the repair efficiency, improves the overall efficiency and productivity of the equipment, and avoids the problem of unsuccessful repair due to errors caused by manual operations. Automatic center positioning improves the accuracy of the fix.
- a central positioning unit 10 configured to centrally locate a defective pixel to obtain a center coordinate of the defective pixel
- the repairing unit 20 is configured to repair the defective pixel according to the central coordinate.
- the block diagram of the central positioning unit 10 in this embodiment is as shown in FIG. 9, and includes a first positioning unit 11 for positioning a defective pixel to obtain pixel coordinates of the defective pixel.
- the central positioning unit 10 further includes a second positioning unit 12, further performing center positioning on the defective pixel to obtain the center coordinates of the defective pixel, and the pixel coordinates and the central coordinate are not based on the obtained pixel coordinates of the defective pixel. coincide.
- the second positioning unit 12 in this embodiment includes:
- the edge determining unit 121 is configured to scan upward, downward, leftward, and rightward with the pixel coordinates as the center, until the upper edge, the lower edge, the left edge, and the right edge of the defective pixel are scanned to obtain the upper edge coordinates, Lower edge coordinates, left edge coordinates, and right edge coordinates.
- the edge determining unit is configured to scan the four directions of up, down, left, and right respectively from the pixel coordinates, and when the gray value corresponding to the pixel coordinates changes, determine four.
- the coordinates when the gray value changes are taken as the upper edge coordinate, the lower edge coordinate, the left edge coordinate, and the right edge coordinate, respectively.
- the second positioning unit 12 of this embodiment further includes: a central determining unit 122, configured to calculate an abscissa of the central coordinate according to the upper edge coordinate and the lower edge coordinate, and calculate the ordinate of the central coordinate according to the left edge coordinate and the right edge coordinate , so far get the center coordinates.
- the method for calculating the center coordinates according to the upper edge coordinates, the lower edge coordinates, the left edge coordinates, and the right edge coordinates is the same as the calculation method in the first embodiment, and will not be described herein.
- the repair unit 20 emits laser light according to the obtained optimal brightness, and illuminates the defective pixel to perform pulverization and diffusion on the black matrix of the defective pixel region, thereby realizing the physical shading property of the ear defect, and completing repair.
- the system further includes a repair monitoring unit 30.
- the block diagram is shown in FIG. 10, and is used for monitoring the repair result, including:
- the detecting module 31 is configured to respectively detect the defective pixels before and after repairing the defective pixels to obtain a preset brightness and a repair brightness.
- the determining module 32 is configured to determine the repair effect according to the preset brightness and the repair brightness. For example, when the difference between the preset brightness and the repaired brightness is less than the determination threshold, the determining module 32 determines that the repair is successful; and when the difference between the preset brightness and the repaired brightness is greater than the determination threshold, the repair unit returns to the center coordinate pair again. Defective pixels are repaired.
- composition of the detecting module 31 is as shown in FIG. 11, and includes: a light source emitting unit
- the reflected light module 02, the prism group, the camera 04, and the photosensitive module 05 The light source emitting unit 01 is located below the display panel 00, and is configured to emit light of a preset brightness to the display panel 00.
- the reflected light module 02 is located above the display panel.
- the reflection through the prism group is divided into two paths, one way is reflected to the camera 04 to acquire an image, and the other is reflected to the photosensitive module 05; wherein the photosensitive module 05 is based on the reflected light
- the defective pixel area is detected to obtain a preset brightness before the repair, and after the defective pixel is repaired, the repaired defective pixel is again subjected to brightness detection in the case where the unrepaired pixel is occluded, and the repaired brightness is obtained.
- the prism group provided in FIG. 11 includes three prisms, wherein the main function of the first prism 031 is to receive the reflection from the reflected light module 02. The light is then split into two paths by reflection and refraction, one direction in the horizontal direction, and then transmitted through the second prism 032, so that the camera located above it acquires an image; the other direction obtained by the second prism 032 is perpendicular to the vertical direction Then, through the reflection of the third prism 033, the photosensitive module located in the horizontal direction can measure the brightness of the light.
- the light source emitting unit 01 When the defective pixel is positioned, the light source emitting unit 01 is turned on, and the reflected light module 02 is turned off. At this time, the light source emitting unit 01 is equivalent to the backlight, and the light passes through the defective pixel to display a corresponding color, for example, red, green or blue. Etc., and the black matrix occluded area is black, so it is convenient to centrally locate the defective pixel according to the gray value of the defective pixel.
- the light source transmitting unit 01 and the reflected light module 02 are turned on, and the brightness of the defective pixel area is detected by the photosensitive module 05, and the preset brightness s is obtained. After the defective pixel is repaired, the unrepaired pixel is occluded.
- the light generated by the light source emitting unit 01 is reflected to the prism group, and one of the light is reflected to the photosensitive module, and the photosensitive module 05 can be in the defective pixel according to the reflected light. If the unrepaired pixel is occluded, the brightness of the repaired defective pixel is detected, and the repaired brightness is corrected to obtain the repaired brightness SA, and then the determining module can determine the repair effect by repairing the difference between the brightness SA and the preset brightness S, that is, if S- SA > d, it is judged that the repair is qualified; if S-SA ⁇ d, it is judged that the repair is unqualified, where d is the judgment threshold.
- the camera 04 in this embodiment is a CCD camera, that is, a charge-coupled device, and may also be an image sensor.
- the system provided by the embodiment further includes a photosensitive module, which can automatically adjust the brightness during the repair process, and compares the brightness of the defective pixel area before and after the repair, thereby confirming whether the repair is qualified.
- the system not only repairs defective pixels, but also monitors the results of repairs to increase productivity.
- the third embodiment of the present invention further provides a display panel, which is a display panel repaired based on the method for repairing defective pixels provided in the first embodiment.
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US14/429,885 US9791725B2 (en) | 2013-12-18 | 2014-07-18 | Method and system for repairing defective pixel, and display panel |
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CN201310700535.5A CN103676236B (zh) | 2013-12-18 | 2013-12-18 | 一种修复缺陷像素的方法、系统及显示面板 |
CN201310700535.5 | 2013-12-18 |
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CN103676236B (zh) * | 2013-12-18 | 2017-01-04 | 合肥京东方光电科技有限公司 | 一种修复缺陷像素的方法、系统及显示面板 |
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KR102049681B1 (ko) * | 2016-11-30 | 2019-11-27 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | 이미지 데드 픽셀 보상 방법, 장치 및 비 일시적 컴퓨터 판독 저장 매체 |
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CN112086048B (zh) * | 2020-08-31 | 2022-09-23 | 苏州迈为科技股份有限公司 | 一种oled屏幕暴亮点修复方法及装置 |
CN111933760B (zh) * | 2020-09-28 | 2020-12-29 | 苏州科韵激光科技有限公司 | 微型led像素修复设备及微型led像素修复方法 |
CN112599713A (zh) * | 2020-12-17 | 2021-04-02 | 安徽熙泰智能科技有限公司 | 一种高分辨率微显示器缺陷修复方法 |
CN112904605B (zh) * | 2021-03-31 | 2023-03-28 | 长沙惠科光电有限公司 | 彩膜缺陷的测高方法、设备及介质 |
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CN103676236B (zh) | 2017-01-04 |
US20160033796A1 (en) | 2016-02-04 |
US9791725B2 (en) | 2017-10-17 |
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