CN112945984A - Detection method and detection device for display panel - Google Patents
Detection method and detection device for display panel Download PDFInfo
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- CN112945984A CN112945984A CN202110136234.9A CN202110136234A CN112945984A CN 112945984 A CN112945984 A CN 112945984A CN 202110136234 A CN202110136234 A CN 202110136234A CN 112945984 A CN112945984 A CN 112945984A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
- G01N2021/8809—Adjustment for highlighting flaws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N2021/9513—Liquid crystal panels
Abstract
The embodiment of the invention discloses a detection method and a detection device of a display panel. The detection method of the display panel comprises the following steps: arranging a first polarizer between the display panel and the photographing equipment; adjusting the first polarizer to make the difference value between the polarization angle of the light emitted to the first polarizer by the display panel and the polarization angle of the light passing through the first polarizer be a first angle; shooting a first color picture of the display panel by using the shooting equipment to obtain a first color picture photo; and checking the first color picture photo. According to the embodiment of the invention, the brightness of the normal pixel point is darkened by rotating the first polaroid arranged between the display panel and the photographic equipment, the contrast between the abnormal pixel point and the normal pixel point is increased, the display panel is convenient to observe and detect, and the production yield is improved.
Description
Technical Field
The invention relates to the field of display, in particular to a detection method and a detection device of a display panel.
Background
In recent years, display panels have been widely used in the life of people.
At present, in the traditional automatic inspection, a camera is used for shooting a display area of a display panel, visual defects are detected, and characteristic parameters of the defects of the display panel or/and a picture file are/is transmitted to a nuclear inspection position in a centralized mode.
Therefore, a method and an apparatus for inspecting a display panel are needed to solve the above-mentioned problems.
Disclosure of Invention
The embodiment of the invention provides a detection method and a detection device of a display panel, which can solve the technical problems that partial foreign matters and alignment defective pixels are not sufficiently obviously imaged in the existing blocking detection method, so that the leakage is caused and the yield of the display panel is finally reduced.
The embodiment of the invention provides a detection method of a display panel, which comprises the following steps:
arranging a first polarizer between the display panel and the photographing equipment;
adjusting the first polarizer to enable the difference value between the polarization angle of the light emitted to the first polarizer by the display panel and the polarization angle of the light passing through the first polarizer to be a first angle;
shooting a first color picture of the display panel by using the shooting equipment to obtain a first color picture photo;
and checking the first color picture photo.
In an embodiment, the first color frame is a white frame.
In one embodiment, the first polarizer is located on the photographing apparatus.
In one embodiment, the first polarizer is connected to a rotating unit and a control unit for controlling the rotating unit, and the step of adjusting the first polarizer includes: and controlling the rotating unit to rotate the first polarizer by using the control unit, so that the difference value between the polarization angle of the light emitted to the first polarizer by the display panel and the polarization angle of the light passing through the first polarizer is a first angle.
In an embodiment, before the step of adjusting the first polarizer so that the difference between the polarization angle of the light emitted from the display panel to the first polarizer and the polarization angle of the light passing through the first polarizer is a first angle, the method further includes: shooting a second color picture of the display panel by using the shooting equipment to obtain a second color picture photo; and checking the second color picture photo.
In an embodiment, the method for detecting the display panel further includes: adjusting the first polarizer to enable the difference value between the polarization angle of the light emitted to the first polarizer by the display panel and the polarization angle of the light passing through the first polarizer to be a second angle; shooting a second color picture of the display panel by using the shooting equipment to obtain a second color picture photo; and checking the second color picture photo.
In an embodiment, the exposure time for shooting the first color picture of the display panel by using the shooting device is a first exposure time, and the exposure time for shooting the second color picture of the display panel by using the shooting device is a second exposure time; wherein the first exposure time is greater than the second exposure time.
In an embodiment, the second color frame is any one of a red frame, a green frame, a blue frame, a black frame, a white frame and a gray frame.
In one embodiment, the first angle is 80 ° to 90 °.
The embodiment of the present invention further provides a detection apparatus for a display panel, including:
a photographing device;
the first polaroid is positioned between the photographing equipment and the display panel;
when the photographing equipment is used for photographing a first color picture of the display panel, the difference value between the polarization angle of the light rays emitted to the first polarizer by the display panel and the polarization angle of the light rays passing through the first polarizer is a first angle.
According to the embodiment of the invention, the brightness of the normal pixel point is darkened by rotating the first polaroid arranged between the display panel and the photographic equipment, the contrast between the abnormal pixel point and the normal pixel point is increased, the display panel is convenient to observe and detect, and the production yield is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flowchart illustrating steps of a method for inspecting a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first structure of a detection apparatus for a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second structure of a detection apparatus for a display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Furthermore, it should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, and are not intended to limit the present invention. In the present invention, unless otherwise specified, the use of directional terms such as "upper" and "lower" generally means upper and lower in the actual use or operation of the device, particularly in the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
At present, in the traditional automatic inspection, a camera is used for shooting a display area of a display panel, visual defects are detected, and characteristic parameters of the defects of the display panel or/and a picture file are/is transmitted to a nuclear inspection position in a centralized mode.
Referring to fig. 1, an embodiment of the invention provides a method for detecting a display panel 200, including:
s100, arranging a first polarizer 300 between the display panel 200 and the photographing apparatus 400;
s200, adjusting the first polarizer 300 to enable the difference value between the polarization angle of the light emitted to the first polarizer 300 by the display panel 200 and the polarization angle of the light passing through the first polarizer 300 to be a first angle;
s300, shooting a first color picture of the display panel 200 by using the shooting device 400 to obtain a first color picture;
s400, checking the first color picture.
In the embodiment of the invention, the brightness of the normal pixel point is darkened by rotating the first polarizer 300 arranged between the display panel 200 and the photographic equipment, the contrast between the abnormal pixel point and the normal pixel point is increased, the display panel 200 is convenient to observe and detect, and the production yield is improved.
The technical solution of the present invention will now be described with reference to specific embodiments.
The detection method of the display panel 200 comprises the following steps:
s100, a first polarizer 300 is disposed between the display panel 200 and the photographing apparatus 400, please refer to fig. 2.
In this embodiment, the display panel 200 may be a liquid crystal display panel 200 or a self-luminous display panel 200.
In this embodiment, when the display panel 200 is a liquid crystal display panel 200, the display panel 200 includes a backlight unit, a lower polarizing layer located on the backlight unit, an array substrate located on the lower polarizing layer, a liquid crystal layer located on the array substrate, a color film layer located on the liquid crystal layer, and an upper polarizing plate located on the color film layer.
In this embodiment, when the display panel 200 is a self-luminous display panel 200, the display panel 200 includes an array substrate, a light emitting device layer on the array substrate, and a polarizing layer on the light emitting device layer.
In this embodiment, the photographing apparatus 400 may be a camera or a chroma and luma catcher, which is not limited herein.
S200, adjusting the first polarizer 300 so that the difference between the polarization angle of the light emitted from the display panel 200 to the first polarizer 300 and the polarization angle of the light passing through the first polarizer 300 is a first angle.
In this embodiment, when the display panel 200 is a liquid crystal display panel 200, the first polarizer 300 may be the upper polarizer.
In this embodiment, the first polarizer 300 is located on the photographing apparatus 400. The photographing apparatus 400 includes a camera body and a lens, the first polarizer 300 is located on the lens of the photographing apparatus 400, and the first polarizer 300 can rotate on the lens, so that a difference between a polarization angle of light emitted from the display panel 200 to the first polarizer 300 and a polarization angle of light passing through the first polarizer 300 is a first angle, specifically referring to fig. 3, a bright light picture (a white picture) is subjected to brightness darkening, a contrast between an abnormal pixel point and a normal pixel point is increased, and the observation and the judgment of nuclear detection are easy.
In this embodiment, the first angle is 80 ° to 90 °. The angle can ensure that the contrast between the abnormal pixel point and the normal pixel point is enhanced, a certain light output amount can be ensured, and abnormal display of the abnormal pixel point is easy to observe.
In this embodiment, the first polarizer 300 is connected to a rotating unit 500 and a control unit 600 for controlling the rotating unit 500, and the step of adjusting the first polarizer 300 includes: the control unit 600 is used to control the rotating unit 500 to rotate the first polarizer 300, so that the difference between the polarization angle of the light emitted from the display panel 200 to the first polarizer 300 and the polarization angle of the light passing through the first polarizer 300 is a first angle, which is shown in fig. 3. The control unit 600 is electrically connected to the rotating unit 500, the rotating unit 500 is connected to the first polarizer 300, the control unit 600 is electrically connected to the photographing apparatus 400, and the connection line in fig. 2 and 3 is a wire or a connection line. The control unit 600 may include a computer, and the first polarizer 300 may be rotated by any angle under automatic control of the computer, so as to adjust to different deviation angles of different color frames, perform adjustment of the angle corresponding to the optimal contrast, and facilitate observation, determination and verification.
In this embodiment, the rotating unit 500 includes a motor and a connecting member, and the connecting member connects the motor and the first polarizer 300.
In this embodiment, before step S200, the method for detecting the display panel 200 further includes:
s200a, shooting the second color picture of the display panel 200 by the shooting device 400, so as to obtain a second color picture photo.
And S200b, checking the second color picture photo.
In this embodiment, the second color frame is any one of a red frame, a green frame, a blue frame, a black frame, a white frame and a gray frame.
In this embodiment, when the step S200a is performed, the first polarizer 300 makes the polarization angle of the light beam emitted by the display panel 200 to the first polarizer 300 the same as the polarization angle of the light beam passing through the first polarizer 300, and measures a picture photo of any one of a pure red picture, a green picture, a blue picture, a black picture, a white picture and a gray picture for obtaining other parameters.
In this embodiment, before step S200, the method for detecting the display panel 200 further includes:
s200c, adjusting the first polarizer 300 such that the difference between the polarization angle of the light emitted from the display panel 200 to the first polarizer 300 and the polarization angle of the light passing through the first polarizer 300 is a second angle.
S200d, shooting the second color picture of the display panel 200 by the shooting device 400, so as to obtain a second color picture photo.
And S200e, checking the second color picture photo.
In this embodiment, the second color frame is any one of a red frame, a green frame, a blue frame, a black frame, a white frame and a gray frame.
In this embodiment, the second angle is smaller than the first angle. When the second color picture is photographed to obtain the second color picture photo, the difference value between the polarization angle of the light emitted from the display panel 200 to the first polarizer 300 and the polarization angle of the light passing through the first polarizer 300 is made to be the second angle, and when any one of the red picture, the green picture, the blue picture, the black picture, the white picture and the gray picture is measured, especially the red picture, the green picture, the blue picture, the black picture and the gray picture, the contrast between the abnormal pixel point and the normal pixel point can be increased without very high contrast, so that the observation, the judgment and the check are easy, and the phenomenon that the measurement is inaccurate due to the fact that the light transmission amount of the dark picture is reduced too much can be avoided.
S300, shooting the first color picture of the display panel 200 by using the shooting device 400 to obtain a first color picture photo.
In this embodiment, the first color picture is a white picture. When the first polarizer 300 is not provided, the bright color points are abnormal pixel points, and the dark color points are normal pixel points; when the first polarizer 300 is rotated, the color of the normal pixel point is changed into a dark color, the color of the abnormal pixel point is a bright color relative to the color of the normal pixel point, when the abnormal pixel point exists, the bright color of the abnormal pixel point is compared with the dark color of the normal pixel point, the contrast is high, whether the abnormal pixel point exists can be easily distinguished, and the white picture is easier to distinguish.
In this embodiment, the exposure time for shooting the first color picture of the display panel 200 by using the shooting device 400 is a first exposure time, and the exposure time for shooting the second color picture of the display panel 200 by using the shooting device 400 is a second exposure time; wherein the first exposure time is greater than the second exposure time. When the first color picture (white picture) is shot, the first polarizer 300 forms the first angle, and at this time, the contrast between the abnormal pixel point and the normal pixel point may not be large enough, that is, the normal pixel point should be black, and the abnormal pixel point should be an abnormal white bright point, and in the shot first color picture, the abnormal white bright point is still not obvious enough, which affects the accuracy of the nuclear detection.
S400, checking the first color picture.
In this embodiment, in the first color picture, bright color points are abnormal pixel points, dark color points are normal pixel points, in the prior art, the first polarizer 300 is not adjusted, the picture of the abnormal pixel points is dark, the picture of the normal pixel points is bright, the number of the abnormal pixel points is small, the abnormal pixel points can be hidden in the normal pixel points with bright color and cannot be easily found, in this embodiment, the color of the normal pixel points is changed into dark color through the first polarizer 300, the abnormal pixel points are bright color relative to the color of the normal pixel points, when the abnormal pixel points exist, the bright color of the abnormal pixel points is compared with the dark color of the normal pixel points, the contrast ratio is high, and whether the abnormal pixel points exist can be easily distinguished.
In this embodiment, when the display panel 200 includes a bright point, the display panel 200 is an abnormal display panel; otherwise, the display panel 200 is a normal display panel.
In this embodiment, step S400 includes:
s410a, extracting highlight areas and low-highlight areas in the first color picture.
In this embodiment, the highlight region is a region having a brightness greater than or equal to a first brightness, and the highlight region is a region having a brightness less than the first brightness. The sum of the areas of the highlight areas and the low-light areas is the total area.
S420a, when the ratio of the area of the highlight region to the total area is greater than or equal to a first threshold, the display panel 200 is an abnormal display panel; when the ratio of the area of the highlight region to the total area is smaller than the first threshold, the display panel 200 is a normal display panel.
In this embodiment, the checking in steps S410a and S420a can be intelligently determined by a computer, and the step of manually determining the checking is omitted.
In this embodiment, step S400 includes:
s410b, extracting highlight areas and low-highlight areas in the first color picture.
In this embodiment, the highlight region is a region having a brightness greater than or equal to a first brightness, and the highlight region is a region having a brightness less than the first brightness. The sum of the areas of the highlight areas and the low-light areas is the total area.
And S420b, improving the brightness of the highlight area.
S430b, when the ratio of the area of the highlight region to the total area is greater than or equal to a first threshold, the display panel 200 is an abnormal display panel; when the ratio of the area of the highlight region to the total area is smaller than the first threshold, the display panel 200 is a normal display panel.
In this embodiment, by improving the brightness of the highlight area, the area of the highlight area can be calculated more conveniently, abnormal pixel points can be positioned more accurately, and the efficiency and accuracy of nuclear detection are improved.
In the embodiment of the invention, the brightness of the normal pixel point is darkened by rotating the first polarizer 300 arranged between the display panel 200 and the photographic equipment, the contrast between the abnormal pixel point and the normal pixel point is increased, the display panel 200 is convenient to observe and detect, and the production yield is improved.
Referring to fig. 2 and fig. 3, an embodiment of the invention further provides a device 100 for detecting a display panel, including:
a photographing apparatus 400;
a first polarizer 300 between the photographing apparatus 400 and the display panel 200;
when the photographing apparatus 400 is used to photograph the first color picture of the display panel 200, a difference between a polarization angle of light emitted by the display panel 200 to the first polarizer 300 and a polarization angle of light passing through the first polarizer 300 is a first angle.
In the embodiment of the invention, the brightness of the normal pixel point is darkened by rotating the first polarizer 300 arranged between the display panel 200 and the photographic equipment, the contrast between the abnormal pixel point and the normal pixel point is increased, the display panel 200 is convenient to observe and detect, and the production yield is improved.
The technical solution of the present invention will now be described with reference to specific embodiments.
The detection apparatus 100 for a display panel includes: a photographing apparatus 400; a first polarizer 300 between the photographing apparatus 400 and the display panel 200; when the photographing apparatus 400 is used to photograph the first color picture of the display panel 200, a difference between a polarization angle of light emitted by the display panel 200 to the first polarizer 300 and a polarization angle of light passing through the first polarizer 300 is a first angle, which is specifically shown in fig. 2.
In this embodiment, the first color picture is a white picture. When the first polarizer 300 is not provided, the bright color points are abnormal pixel points, and the dark color points are normal pixel points; when the first polarizer 300 is rotated, the color of the normal pixel point is changed into a dark color, the color of the abnormal pixel point is a bright color relative to the color of the normal pixel point, when the abnormal pixel point exists, the bright color of the abnormal pixel point is compared with the dark color of the normal pixel point, the contrast is high, whether the abnormal pixel point exists can be easily distinguished, and the white picture is easier to distinguish.
In this embodiment, the first polarizer 300 is located on the lens of the photographing apparatus 400, and the inspection apparatus 100 of the display panel further includes a rotating unit 500 connected to the first polarizer 300 and a control unit 600 for controlling the rotating unit 500, as shown in fig. 3. The control unit 600 is electrically connected to the rotating unit 500, the rotating unit 500 is connected to the first polarizer 300, the control unit 600 is electrically connected to the photographing apparatus 400, and the connection line in fig. 2 and 3 is a wire or a connection line.
In this embodiment, the rotating unit 500 includes a motor and a connecting member, and the connecting member connects the motor and the first polarizer 300.
In this embodiment, the control unit 600 may include a computer, and the first polarizer 300 may rotate at any angle under automatic control of the computer, so as to adjust to different deviation angles of different color frames, perform adjustment of the angle corresponding to the optimal contrast, and facilitate observation, determination and verification.
In this embodiment, the photographing device 400 is used to photograph the first color picture of the display panel 200 to obtain a first color picture; and checking the first color picture photo.
In this embodiment, the computer may extract the highlight region and the low-highlight region in the first color picture.
In this embodiment, the highlight region is a region having a brightness greater than or equal to a first brightness, and the highlight region is a region having a brightness less than the first brightness. The sum of the areas of the highlight areas and the low-light areas is the total area.
In this embodiment, when the ratio of the area of the highlight region to the total area is greater than or equal to a first threshold, the display panel 200 is an abnormal display panel; when the ratio of the area of the highlight region to the total area is smaller than the first threshold, the display panel 200 is a normal display panel.
In the embodiment, the check can be intelligently judged through a computer, and the step of manually judging the check is omitted.
In this embodiment, the highlight region is a region having a brightness greater than or equal to a first brightness, and the highlight region is a region having a brightness less than the first brightness. The sum of the areas of the highlight areas and the low-light areas is the total area.
In this embodiment, the brightness of the highlight region may be increased by a computer.
In this embodiment, when the ratio of the area of the highlight region to the total area is greater than or equal to a first threshold, the display panel 200 is an abnormal display panel; when the ratio of the area of the highlight region to the total area is smaller than the first threshold, the display panel 200 is a normal display panel.
In this embodiment, by improving the brightness of the highlight area, the area of the highlight area can be calculated more conveniently, abnormal pixel points can be positioned more accurately, and the efficiency and accuracy of nuclear detection are improved.
According to the embodiment of the invention, the brightness of the normal pixel point is darkened by rotating the first polaroid arranged between the display panel and the photographic equipment, the contrast between the abnormal pixel point and the normal pixel point is increased, the display panel is convenient to observe and detect, and the production yield is improved.
The embodiment of the invention discloses a detection method and a detection device of a display panel. The detection method of the display panel comprises the following steps: arranging a first polarizer between the display panel and the photographing equipment; adjusting the first polarizer to make the difference value between the polarization angle of the light emitted to the first polarizer by the display panel and the polarization angle of the light passing through the first polarizer be a first angle; shooting a first color picture of the display panel by using the shooting equipment to obtain a first color picture photo; and checking the first color picture photo. According to the embodiment of the invention, the brightness of the normal pixel point is darkened by rotating the first polaroid arranged between the display panel and the photographic equipment, the contrast between the abnormal pixel point and the normal pixel point is increased, the display panel is convenient to observe and detect, and the production yield is improved.
The above detailed description is provided for the detection method and the detection apparatus of the display panel according to the embodiments of the present invention, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for detecting a display panel, comprising:
arranging a first polarizer between the display panel and the photographing equipment;
adjusting the first polarizer to enable the difference value between the polarization angle of the light emitted to the first polarizer by the display panel and the polarization angle of the light passing through the first polarizer to be a first angle;
shooting a first color picture of the display panel by using the shooting equipment to obtain a first color picture photo;
and checking the first color picture photo.
2. The method for detecting a display panel according to claim 1, wherein the first color picture is a white picture.
3. The inspection method of the display panel of claim 1, wherein the first polarizer is located on the photo device.
4. The inspecting method of claim 3, wherein the first polarizer is connected with a rotating unit and a control unit for controlling the rotating unit, and the step of adjusting the first polarizer comprises:
and controlling the rotating unit to rotate the first polarizer by using the control unit, so that the difference value between the polarization angle of the light emitted to the first polarizer by the display panel and the polarization angle of the light passing through the first polarizer is a first angle.
5. The method for inspecting a display panel according to claim 1, wherein the step of adjusting the first polarizer so that the difference between the polarization angle of the light emitted from the display panel to the first polarizer and the polarization angle of the light passing through the first polarizer is a first angle further comprises:
shooting a second color picture of the display panel by using the shooting equipment to obtain a second color picture photo;
and checking the second color picture photo.
6. The method for inspecting a display panel according to claim 1, further comprising:
adjusting the first polarizer to enable the difference value between the polarization angle of the light emitted to the first polarizer by the display panel and the polarization angle of the light passing through the first polarizer to be a second angle;
shooting a second color picture of the display panel by using the shooting equipment to obtain a second color picture photo;
and checking the second color picture photo.
7. The method according to claim 5 or 6, wherein the exposure time taken by the photographing apparatus for the first color frame of the display panel is a first exposure time, and the exposure time taken by the photographing apparatus for the second color frame of the display panel is a second exposure time;
wherein the first exposure time is greater than the second exposure time.
8. The method according to claim 5 or 6, wherein the second color picture is any one of a red picture, a green picture, a blue picture, a black picture, a white picture, and a gray picture.
9. The method for inspecting a display panel according to claim 1, wherein the first angle is 80 ° to 90 °.
10. An apparatus for inspecting a display panel, comprising:
a photographing device;
the first polaroid is positioned between the photographing equipment and the display panel;
when the photographing equipment is used for photographing a first color picture of the display panel, the difference value between the polarization angle of the light rays emitted to the first polarizer by the display panel and the polarization angle of the light rays passing through the first polarizer is a first angle.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09257641A (en) * | 1996-03-26 | 1997-10-03 | Seiko Epson Corp | Method and device for inspecting display surface of liquid crystal panel |
| KR19990049936A (en) * | 1997-12-16 | 1999-07-05 | 구자홍 | Defect Detection Device and Method of Liquid Crystal Display |
| JP2001324453A (en) * | 2000-03-08 | 2001-11-22 | Fuji Photo Film Co Ltd | Apparatus, system and method for inspecting defect of film |
| JP2005055447A (en) * | 1998-09-18 | 2005-03-03 | Hitachi Ltd | Method and apparatus for inspecting defects |
| JP2007263928A (en) * | 2006-03-30 | 2007-10-11 | Epson Imaging Devices Corp | Visual inspection method and visual inspection device for substrate |
| CN203337939U (en) * | 2013-06-24 | 2013-12-11 | 京东方科技集团股份有限公司 | Detection device of liquid crystal display panel |
| CN203705754U (en) * | 2014-02-17 | 2014-07-09 | 北京京东方光电科技有限公司 | Liquid crystal display panel detection device |
| CN104007116A (en) * | 2013-02-21 | 2014-08-27 | 欧姆龙株式会社 | Defect inspection device and defect inspection method |
| CN109444151A (en) * | 2018-11-15 | 2019-03-08 | 深圳市华星光电半导体显示技术有限公司 | A kind of liquid crystal display panel defect inspection method and its system |
| CN111899231A (en) * | 2020-07-17 | 2020-11-06 | 武汉精立电子技术有限公司 | Display panel defect detection method, device, equipment and storage medium |
-
2021
- 2021-02-01 CN CN202110136234.9A patent/CN112945984A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09257641A (en) * | 1996-03-26 | 1997-10-03 | Seiko Epson Corp | Method and device for inspecting display surface of liquid crystal panel |
| KR19990049936A (en) * | 1997-12-16 | 1999-07-05 | 구자홍 | Defect Detection Device and Method of Liquid Crystal Display |
| JP2005055447A (en) * | 1998-09-18 | 2005-03-03 | Hitachi Ltd | Method and apparatus for inspecting defects |
| JP2001324453A (en) * | 2000-03-08 | 2001-11-22 | Fuji Photo Film Co Ltd | Apparatus, system and method for inspecting defect of film |
| JP2007263928A (en) * | 2006-03-30 | 2007-10-11 | Epson Imaging Devices Corp | Visual inspection method and visual inspection device for substrate |
| CN104007116A (en) * | 2013-02-21 | 2014-08-27 | 欧姆龙株式会社 | Defect inspection device and defect inspection method |
| CN203337939U (en) * | 2013-06-24 | 2013-12-11 | 京东方科技集团股份有限公司 | Detection device of liquid crystal display panel |
| CN203705754U (en) * | 2014-02-17 | 2014-07-09 | 北京京东方光电科技有限公司 | Liquid crystal display panel detection device |
| CN109444151A (en) * | 2018-11-15 | 2019-03-08 | 深圳市华星光电半导体显示技术有限公司 | A kind of liquid crystal display panel defect inspection method and its system |
| CN111899231A (en) * | 2020-07-17 | 2020-11-06 | 武汉精立电子技术有限公司 | Display panel defect detection method, device, equipment and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| 双锴: "计算机视觉", 北京邮电大学出版社, pages: 25 - 26 * |
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