CN108287419A - Display panel frame crosstalk test method - Google Patents
Display panel frame crosstalk test method Download PDFInfo
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- CN108287419A CN108287419A CN201810096844.9A CN201810096844A CN108287419A CN 108287419 A CN108287419 A CN 108287419A CN 201810096844 A CN201810096844 A CN 201810096844A CN 108287419 A CN108287419 A CN 108287419A
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- display panel
- grey menu
- test
- brightness value
- frame crosstalk
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- 238000010998 test method Methods 0.000 title claims abstract description 29
- 238000012360 testing method Methods 0.000 claims abstract description 112
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000005855 radiation Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention provides a kind of display panel frame crosstalk test method, show the picture that may be implemented come test pictures crosstalk in Cell process stages by display panel, therefore frame crosstalk test need not be carried out again after the module group procedure stage is by IC and FPC and display panel bonding, it is shorter to test feedback time, testing efficiency can not only be improved, the waste that the materials such as IC and FPC can also be reduced is conducive to cost-effective.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of display panel frame crosstalk test methods.
Background technology
With the development of display technology, the planes such as liquid crystal display (Liquid Crystal Display, LCD) display dress
It sets because having many advantages, such as that high image quality, power saving, fuselage is thin and has a wide range of application, and is widely used in mobile phone, TV, a number
The various consumer electrical products such as word assistant, digital camera, laptop, desktop computer, become the master in display device
Stream.
Liquid crystal display on existing market is largely backlight liquid crystal display comprising liquid crystal display panel and the back of the body
Optical mode group (backlight module).The operation principle of liquid crystal display panel is in thin-film transistor array base-plate (Thin
Film Transistor Array Substrate, TFT Array Substrate) and colored filter (Color
Filter, CF) liquid crystal molecule is poured between substrate, and apply driving voltage on two plate bases to control the rotation of liquid crystal molecule
The light refraction of backlight module is out generated picture by direction.
It is different when frame crosstalk (Crosstalk) phenomenon refers to that display panel shows two kinds of different grey menus at the same time
It can mutually be interfered between grey menu.As shown that two kinds of pictures of black and white, black region are influenced to become by white area simultaneously
Not black enough, white area is influenced to become to be insufficient to white by black region, influences display quality.Crosstalk producing causes one
As can be divided into driving reason, material cause and processing procedure reason.Drive reason and material cause relatively more fixed, type of drive and material
It will not change substantially after selected.And processing procedure reason is relatively difficult to control, every batch of product parameters all may be inconsistent, therefore because
Increase for TFT leakage currents caused by processing procedure reason, the increase etc. of parasitic capacitance can all cause Crosstalk phenomenons.
As shown in Figure 1, being a kind of existing display panel frame crosstalk test method, display panel 100 first is shown pure
White picture chooses multiple test points 101 of non-intermediate region in pure white picture and tests multiple test point 101 corresponding first
The intermediate region of display panel 100 is then shown that black picture, display panel 100 remove the surrounding area of intermediate region by brightness value
Domain continues to show pure white picture, tests 101 corresponding second brightness value of multiple test points again, finally calculates each test point
The difference of 101 the first brightness value and the second brightness value, when the of one or more of multiple test points 101 test point 101
When the difference of one brightness value and the second brightness value is more than a preset threshold value, then the frame crosstalk test of the display panel is judged not
It is qualified.Existing display panel TFT substrate and CF substrates to composition box (Cell) process stage due to do not have bonding IC and
100 intermediate region of display panel cannot be shown as black picture by FPC, peripheral regions show pure white picture, it is therefore desirable in mould
Group process stage surveys integrated circuit (IC) and flexible PCB (FPC) and progress frame crosstalk test after display panel bonding
It is very long to try feedback time, influences Resolving probiems efficiency, and when the frame crosstalk test failure of display panel, due to bonding
IC and FPC, causes the material waste of IC and FPC, is unfavorable for cost-effective.
Invention content
The purpose of the present invention is to provide a kind of display panel frame crosstalk test methods, can be in display panel Cell systems
The test pictures crosstalk of journey stage, can not only improve testing efficiency, can also reduce the waste of the materials such as IC and FPC, be conducive to
It is cost-effective.
To achieve the above object, the present invention provides a kind of display panel frame crosstalk test method, include the following steps：
Step S1, display panel is provided, the display panel is to composition box process stage and between the module group procedure stage
Show that the first grey menu, first grey menu have at least one test point, it is corresponding to test each test point
First brightness value；
Step S2, display panel shows the first grey menu and the second grey menu simultaneously, tests each test point difference
Corresponding second brightness value；
Step S3, the difference for calculating separately each test point corresponding first brightness value and the second brightness value, when at least one
When the difference of corresponding first brightness value of a test point and the second brightness value is more than a preset threshold value, then display panel is judged
Frame crosstalk test failure；It is preset when the difference of corresponding first brightness value of each test point and the second brightness value is respectively less than one
Threshold value when, then judge the frame crosstalk test passes of display panel.
The grayscale of first grey menu is 255；The grayscale of second grey menu is 0.
Corresponding first brightness value of multiple test points and the are tested by color analysis instrument or spectroradio luminance meter
Two brightness values.
Optionally, in step s 2, display panel is divided into two regions, upper region up and down and shows the second grey menu, under
Region shows the first grey menu.
Optionally, in step s 2, display panel is divided into two regions of left and right, and left region shows the first grey menu, right
Region shows the second grey menu.
Optionally, in step s 2, display panel is divided into three region of upper, middle and lower being sequentially connected, and upper region shows first
Grey menu, middle region show that the second grey menu, lower region show the first grey menu.
Optionally, in step s 2, display panel is divided into three region of upper, middle and lower being sequentially connected, and upper region shows second
Grey menu, middle region show that the first grey menu, lower region show the second grey menu.
The test point is located at the central area of the first grey menu.
Beneficial effects of the present invention：The display panel frame crosstalk test method of the present invention, by display panel in Cell
Process stage shows that the picture that may be implemented carrys out test pictures crosstalk, thus need not the module group procedure stage by IC and FPC with
Carry out frame crosstalk test after display panel bonding again, test feedback time is shorter, can not only improve testing efficiency, can be with
The waste for reducing the materials such as IC and FPC, is conducive to cost-effective.
Description of the drawings
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with the detailed of the present invention
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is the schematic diagram of existing display panel frame crosstalk test method；
Fig. 2 is the flow chart of the display panel frame crosstalk test method of the present invention；
Fig. 3 is the schematic diagram of the first embodiment of the display panel frame crosstalk test method of the present invention；
Fig. 4 is the schematic diagram of the second embodiment of the display panel frame crosstalk test method of the present invention；
Fig. 5 is the schematic diagram of the 3rd embodiment of the display panel frame crosstalk test method of the present invention；
Fig. 6 is the schematic diagram of the fourth embodiment of the display panel frame crosstalk test method of the present invention.
Specific implementation mode
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with the preferred implementation of the present invention
Example and its attached drawing are described in detail.
Referring to Fig. 2, the present invention provides a kind of display panel frame crosstalk test method, include the following steps：
Step S1, display panel 10 is provided, the display panel 10 is between Cell process stages and module group procedure stage
Show that the first grey menu 11, first grey menu 11 have at least one test point 111, test each test point 111
Corresponding first brightness value；
Step S2, display panel 10 shows the first grey menu 11 and the second grey menu 12 simultaneously, tests each test
111 corresponding second brightness values of point；
Step S3, the difference for calculating separately 111 corresponding first brightness value and the second brightness value of each test point, when at least
When the difference of one 111 corresponding first brightness value of test point and the second brightness value is more than a preset threshold value, then judge to show
The frame crosstalk test failure of panel；When 111 corresponding first brightness value of each test point and the difference of the second brightness value are equal
When less than a preset threshold value, then the frame crosstalk test passes of display panel are judged.
Specifically, the grayscale of first grey menu 11 is 255, i.e., pure white picture, second grey menu 12
Grayscale is 0, i.e. black picture.
Specifically, multiple 111 corresponding first brightness values of test point and the second brightness value are tested by luminance test equipment；
The luminance test equipment can be color analysis instrument or spectroradio luminance meter；The model of color analysis instrument is preferably CA-310, point
The model of light radiation luminance meter is preferably CS-2000.
Specifically, Fig. 2 and Fig. 3 is please referred to, is the first embodiment of the display panel frame crosstalk test method of the present invention,
In step sl, there are one test points 111 for the tool of the first grey menu 11, test 111 corresponding first brightness of test point
Value；
In step s 2, display panel 10 is divided into two regions up and down, upper region shows the second grey menu 12, lower area
Domain shows the first grey menu 11；And the test point 111 is located at first grey menu 11 in the lower region of display panel 10
In, test 111 corresponding second brightness value of test point；
Preferably, the test point 111 is located at the central area of first grey menu 11 in the lower region of display panel 10.
In step s3, the difference for calculating test point 111 corresponding first brightness value and the second brightness value, when the test
When the difference of 111 corresponding first brightness values of point and the second brightness value is more than a preset threshold value, then the picture of display panel is judged
Face crosstalk test failure；When the difference of 111 corresponding first brightness value of test point and the second brightness value is preset less than one
When threshold value, then the frame crosstalk test passes of display panel are judged.
Specifically, Fig. 2 and Fig. 4 is please referred to, is the second embodiment of the display panel frame crosstalk test method of the present invention,
In step sl, there are one test points 111 for the tool of grey menu 11, test 111 corresponding first brightness value of test point；
In step s 2, display panel 10 is divided into two regions of left and right, left region shows the first grey menu 11, right area
Domain shows the second grey menu 12；And the test point 111 is located at first grey menu 11 in the left region of display panel 10
In, test 111 corresponding second brightness value of test point；
Preferably, the test point 111 is located at the central area of first grey menu 11 in the left region of display panel 10.
In step s3, the difference for calculating test point 111 corresponding first brightness value and the second brightness value, when the test
When the difference of 111 corresponding first brightness values of point and the second brightness value is more than a preset threshold value, then the picture of display panel is judged
Face crosstalk test failure；When the difference of 111 corresponding first brightness value of test point and the second brightness value is preset less than one
When threshold value, then the frame crosstalk test passes of display panel are judged.
Specifically, Fig. 2 and Fig. 5 is please referred to, is the 3rd embodiment of the display panel frame crosstalk test method of the present invention,
In step sl, first grey menu 11 tool is there are two test point 111, two test points 111 of test corresponding the
One brightness value；
In step s 2, display panel 10 is divided into three region of upper, middle and lower being sequentially connected, upper region shows the first ash
Rank picture 11, middle region show that the second grey menu 12, lower region show the first grey menu 11；And described two test points
111 are located in first grey menu 11 in the upper region of display panel 10 and lower region, test two test points 111 and distinguish
Corresponding second brightness value；
Preferably, described two test points 111 are located at first grayscale in the upper region and lower region of display panel 10
The central area of picture 11.
In step s3, the difference for calculating separately two test points 111 corresponding first brightness values and the second brightness value, when
When the difference of 111 corresponding first brightness value of at least one test point and the second brightness value is more than a preset threshold value, then judge
The frame crosstalk test failure of display panel；When the difference of two test points 111 corresponding first brightness values and the second brightness value
When value is respectively less than a preset threshold value, then the frame crosstalk test passes of display panel are judged.
Specifically, Fig. 2 and Fig. 6 is please referred to, is the fourth embodiment of the display panel frame crosstalk test method of the present invention,
In step sl, there are one test points 111 for the tool of the first grey menu 11, test 111 corresponding first brightness of test point
Value；
In step s 2, display panel 10 is divided into three region of upper, middle and lower being sequentially connected, upper region shows the second ash
Rank picture 12, middle region show that the first grey menu 11, lower region show the second grey menu 12；And the test point 111
In first grey menu 11 in the middle region of display panel 10,111 corresponding second brightness value of test point is tested；
Preferably, the described test point 111 is located at the center in first grey menu 11 in the middle region of display panel 10
Region.
In step s3, the difference for calculating test point 111 corresponding first brightness value and the second brightness value, when the test
When the difference of 111 corresponding first brightness values of point and the second brightness value is more than a preset threshold value, then the picture of display panel is judged
Face crosstalk test failure；When the difference of 111 corresponding first brightness value of test point and the second brightness value is preset less than one
When threshold value, then the frame crosstalk test passes of display panel are judged.
It should be noted that the display panel frame crosstalk test method of the present invention, by display panel in Cell processing procedures
The picture that may be implemented of stage display carrys out test pictures crosstalk, therefore need not be in the module group procedure stage by IC and FPC and display
Frame crosstalk test is carried out after panel bonding again, test feedback time is shorter, can not only improve testing efficiency, can also reduce
The waste of the materials such as IC and FPC is conducive to cost-effective.
In conclusion the display panel frame crosstalk test method of the present invention, by display panel in Cell process stages
Show that the picture that may be implemented carrys out test pictures crosstalk, therefore need not be in the module group procedure stage by IC and FPC and display panel
Carry out frame crosstalk test after bonding again, test feedback time is shorter, can not only improve testing efficiency, can also reduce IC and
The waste of the materials such as FPC is conducive to cost-effective.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding change and deformations are made in design, and all these change and distortions should all belong to the claims in the present invention
Protection domain.
Claims (8)
1. a kind of display panel frame crosstalk test method, which is characterized in that include the following steps：
Step S1, display panel (10) is provided, the display panel (10) is to composition box process stage and module group procedure stage
Between show the first grey menu (11), first grey menu (11) has at least one test point (111), test each
Corresponding first brightness value of test point (111)；
Step S2, display panel (10) while the first grey menu of display (11) and the second grey menu (12), test each survey
Corresponding second brightness value of pilot (111)；
Step S3, the difference for calculating separately each test point (111) corresponding first brightness value and the second brightness value, when at least one
When the difference of corresponding first brightness value of a test point (111) and the second brightness value is more than a preset threshold value, then judge to show
The frame crosstalk test failure of panel；When the difference of each test point (111) corresponding first brightness value and the second brightness value
When a respectively less than preset threshold value, then the frame crosstalk test passes of display panel are judged.
2. display panel frame crosstalk test method as described in claim 1, which is characterized in that first grey menu
(11) grayscale is 255；The grayscale of second grey menu (12) is 0.
3. display panel frame crosstalk test method as described in claim 1, which is characterized in that by color analysis instrument or divide
Light radiation luminance meter tests corresponding first brightness value of multiple test points (111) and the second brightness value.
4. display panel frame crosstalk test method as described in claim 1, which is characterized in that in step s 2, display surface
Plate (10) is divided into two regions up and down, and upper region shows that the second grey menu (12), lower region show the first grey menu (11).
5. display panel frame crosstalk test method as described in claim 1, which is characterized in that in step s 2, display surface
Plate (10) is divided into two regions of left and right, and left region shows that the first grey menu (11), right region show the second grey menu (12).
6. display panel frame crosstalk test method as described in claim 1, which is characterized in that in step s 2, display surface
Plate (10) is divided into three region of upper, middle and lower being sequentially connected, and upper region shows that the first grey menu (11), middle region show second
Grey menu (12), lower region show the first grey menu (11).
7. display panel frame crosstalk test method as described in claim 1, which is characterized in that in step s 2, display surface
Plate (10) is divided into three region of upper, middle and lower being sequentially connected, and upper region shows that the second grey menu (12), middle region show first
Grey menu (11), lower region show the second grey menu (12).
8. the display panel frame crosstalk test method as described in any one of claim 4 to 7, which is characterized in that the survey
Pilot (111) is located at the central area of the first grey menu (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096844.9A CN108287419B (en) | 2018-01-31 | 2018-01-31 | Display panel picture crosstalk testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096844.9A CN108287419B (en) | 2018-01-31 | 2018-01-31 | Display panel picture crosstalk testing method |
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| Publication Number | Publication Date |
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| CN108287419A true CN108287419A (en) | 2018-07-17 |
| CN108287419B CN108287419B (en) | 2021-04-23 |
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ID=62836146
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110475115A (en) * | 2019-08-15 | 2019-11-19 | 昆山国显光电有限公司 | Shield body frame crosstalk test method and device, storage medium |
| CN114813045A (en) * | 2022-02-17 | 2022-07-29 | 信利光电股份有限公司 | Optical test method of display module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1881060A (en) * | 2005-06-15 | 2006-12-20 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and testing method thereof |
| TWI312087B (en) * | 2005-08-26 | 2009-07-11 | Au Optronics Corporatio | Test circuit for flat panel display device |
| CN103414912A (en) * | 2013-07-31 | 2013-11-27 | 京东方科技集团股份有限公司 | Method and device for naked eye three-dimensional display crosstalk evaluation |
| CN106569353A (en) * | 2015-10-12 | 2017-04-19 | 比亚迪股份有限公司 | Method and device for measuring display crosstalk of liquid crystal display |
-
2018
- 2018-01-31 CN CN201810096844.9A patent/CN108287419B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1881060A (en) * | 2005-06-15 | 2006-12-20 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and testing method thereof |
| TWI312087B (en) * | 2005-08-26 | 2009-07-11 | Au Optronics Corporatio | Test circuit for flat panel display device |
| CN103414912A (en) * | 2013-07-31 | 2013-11-27 | 京东方科技集团股份有限公司 | Method and device for naked eye three-dimensional display crosstalk evaluation |
| CN106569353A (en) * | 2015-10-12 | 2017-04-19 | 比亚迪股份有限公司 | Method and device for measuring display crosstalk of liquid crystal display |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110475115A (en) * | 2019-08-15 | 2019-11-19 | 昆山国显光电有限公司 | Shield body frame crosstalk test method and device, storage medium |
| WO2021027334A1 (en) * | 2019-08-15 | 2021-02-18 | 昆山国显光电有限公司 | Screen picture crosstalk testing method and apparatus, and storage medium |
| US11647174B2 (en) | 2019-08-15 | 2023-05-09 | Kunshan Go-Visionox Opto-Electronics Co., Ltd | Method for testing crosstalk of screen |
| CN114813045A (en) * | 2022-02-17 | 2022-07-29 | 信利光电股份有限公司 | Optical test method of display module |
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| CN108287419B (en) | 2021-04-23 |
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