CN117826461A - Display effect detection method - Google Patents
Display effect detection method Download PDFInfo
- Publication number
- CN117826461A CN117826461A CN202410078541.XA CN202410078541A CN117826461A CN 117826461 A CN117826461 A CN 117826461A CN 202410078541 A CN202410078541 A CN 202410078541A CN 117826461 A CN117826461 A CN 117826461A
- Authority
- CN
- China
- Prior art keywords
- display
- carrier
- optical sensing
- tested
- stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 230000000694 effects Effects 0.000 title claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 56
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 16
- 238000002955 isolation Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 7
- 230000007547 defect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Analytical Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The invention discloses a detection method of display effect, comprising the following steps: step 1: providing a test apparatus comprising: the device comprises a first carrying platform and a second carrying platform, wherein the first carrying platform is used for carrying a display assembly to be tested, a plurality of optical sensing assemblies are arranged on the second carrying platform in an array manner, and the optical sensing assemblies are arranged to form a detection area; step 2: placing the display components to be tested on the first carrier, lighting the display components, covering the second carrier on the first carrier, enabling the detection areas to correspondingly cover the upper parts of the display components to be tested, and forming a darkroom between each optical sensing component and the display area of the display components to be tested; step 3: the optical sensing assembly detects the optical parameters, and then whether the display assembly to be detected is qualified or not is determined by calculating and/or judging the optical parameters. The invention has the beneficial effects that: a test tool capable of realizing objectification judgment and automation of defects; the loss of backlight materials can be reduced.
Description
Technical Field
The invention relates to the technical field of display modules, in particular to a detection method of a display effect.
Background
The LCD module comprises LCD module, drive IC, FPC, backlight module, cover plate, etc. the production process comprises binding the drive IC on the LCD module (called "COG" after bonding), bonding the FPC on the COG (called "FOG" after bonding), bonding the FOG with the cover plate (called "TFOG" after bonding), and assembling the TFOG with the backlight module.
Because the LCD module itself is abnormal or can cause damage inside the LCD during the assembly process, it is necessary to detect the display effect of the display screen after the assembly is completed, and one test item in the display effect checking process is to confirm whether there is uneven display (also called MURA) on a specific screen; the display non-uniformity is different from the uniformity test in the common sense of the display screen (the uniformity test is to light the display screen, test the brightness of different points of the display screen by using an instrument, then calculate the brightness values of the different points, mainly evaluate the uniformity of backlight luminescence, and because the brightness of the backlight is higher, the influence of external light on the uniformity is less, so that the influence of external light or light at other positions of the display screen to the brightness of the measurement point can be ignored). The uneven display is usually caused by abnormal display of the LCD, and because the optical difference between the uneven display area and the normal display area is small, a relatively dark brightness of the external light can cause a large difference in test results (even if the test is performed in a darkroom, the data of the optical test of the abnormal area can be affected by the light emitted from the normal display position of the display screen), so that the conventional optical test method cannot detect the abnormal display. The detection method for the type of defects at the present stage is to use a complete liquid crystal display module to carry out: 1. establishing a bad type limit sample, and comparing the sample to be tested with the limit sample to judge whether the sample is PASS or not; 2. the ND filter is placed between human eyes and a screen to be detected (corresponding external illumination intensity, distance between the ND filter and the screen to be detected and distance between the ND filter and human eyes are required to be met in general) and whether the ND filter is normal or not is judged by observing differences between normal areas and abnormal areas of the ND filters with different transmittances. The two methods have the problems that: 1. the human eyes are used for identification and judgment, so that subjectivity is high, and misjudgment with a certain probability exists. 2. Problems can be found at the rear end of the assembly of the liquid crystal display module (after the assembly of the backlight is completed), so that the waste of materials of the backlight can be caused;
accordingly, the prior art has drawbacks and needs improvement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a detection method for a display effect.
The technical scheme of the invention is as follows: the invention provides a display effect detection method for detecting the display effect of a front end part (without a backlight module) of a module, which comprises the following steps:
step 1: providing a testing device, said testing device comprising: the display device comprises a first carrier and a second carrier, wherein the first carrier is used for bearing display components to be tested, a plurality of optical sensing components are arranged on the second carrier in an array manner, and the optical sensing components are arranged to form a detection area;
step 2: placing the display assembly to be tested on the first carrying platform and lighting the display assembly, covering the second carrying platform on the first carrying platform, so that the detection area is correspondingly covered above the display assembly to be tested, and a darkroom is formed between each optical sensing assembly and the display area of the display assembly to be tested;
step 3: the optical sensing assembly detects the optical parameters, and then whether the display assembly to be detected is qualified or not is determined by calculating and/or judging the optical parameters. Further, in the step 3, the optical parameter detected by the optical sensing component includes a brightness value and/or a color coordinate.
Further, the optical sensing component is electrically connected with the upper computer and works under the control of the upper computer.
Further, after the step 1, the method further includes a step 1.1: the number and arrangement shape of the optical sensing components in the detection area are set according to the size and shape of the display components to be detected.
Further, when the first carrier and the second carrier are covered, all the optical display components and the display components to be tested are located in a darkroom space formed by the covering of the first carrier and the second carrier.
Further, the first carrier and the second carrier are rotatably connected, so that separation and covering between the first carrier and the second carrier are realized.
Or the second carrying platform is arranged on the driving mechanism, and the driving mechanism controls the separation and the covering between the first carrying platform and the second carrying platform.
Further, a product placement groove is formed in the first carrying platform, the display component to be tested is placed in the product placement groove, and the size of the product placement groove is adjustable.
Further, an isolation buffer member is arranged around the edge of the detection end of each optical sensing assembly.
Further, on a side close to the first stage, the enclosure surface of the second stage is 0.05mm lower than the corresponding surface of the isolation buffer.
Further, in the detection area, adjacent optical sensing components are closely arranged.
Further, a light source for providing backlight for the display component to be tested is arranged below the product placing groove of the first carrying platform.
By adopting the scheme, the invention has the beneficial effects that: 1. objectively judging defects can be realized; 2. the type of detection can be expanded into an automatic test tool by matching with machine vision equipment; 3. the loss of backlight materials can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of a testing device according to an embodiment of the invention.
Fig. 2 is an enlarged view at a in fig. 1.
FIG. 3 is a schematic cross-sectional view of an optical sensing assembly and isolation buffer according to an embodiment of the invention.
Fig. 4 is a schematic cross-sectional view of a second stage according to an embodiment of the invention.
Detailed Description
The invention will be described in detail below with reference to the drawings and the specific embodiments.
Referring to fig. 1 to 4 in combination, in this embodiment, the present invention provides a method for testing a display effect, which includes the following steps: step 1: providing a testing device, said testing device comprising: the first carrier 1 and the second carrier 2, the first carrier 1 is used for bearing a display component 3 (which can be a FOG component) to be tested, a plurality of optical sensing components 21 are arranged on the second carrier 2 in an array manner, and the optical sensing components 21 are arranged to form a detection area. The optical sensing assembly 21 is electrically connected with the upper computer and works under the control of the upper computer. In the detection area, the number and shape of the optical sensing elements 21 in the detection area are set according to the size and shape of the display area of the display element 3 to be detected. The placement of the optical sensing element is not limited to the coincidence of its edge with the horizontal line, but may be an angle of 45 degrees to the horizontal line.
Step 2: the display assembly 3 to be tested is placed on the first carrying platform 1 and is lighted, a display picture can be switched according to the detection requirement, the second carrying platform 2 is covered on the first carrying platform 1, the detection area is correspondingly covered above the display assembly 3 to be tested, a darkroom is formed between each optical sensing assembly 21 and the display area of the display assembly 3 to be tested, and the influence of the area outside the darkroom on the darkroom area is prevented;
step 3: the optical sensing component 21 detects the optical parameters, and then calculates and/or judges the optical parameters to determine whether the display component 3 to be tested is qualified. The optical parameters detected by the optical sensing component comprise brightness values and/or color coordinates.
Further, when the first carrier and the second carrier are covered, all the optical display components and the display components to be tested are positioned in a darkroom space formed by the covering of the first carrier and the second carrier, so that the influence of external light on detection is further avoided.
Further, in the present embodiment, the first stage 1 and the second stage 2 are rotatably connected, so that separation and covering between the first stage 1 and the second stage 2 are achieved.
Further, in other embodiments of the present solution, the second stage is disposed on a driving mechanism, and the driving mechanism controls to achieve separation and capping between the first stage and the second stage. The method specifically comprises the following steps: the second carrier is controlled through automation equipment, the alignment of the second carrier and the second carrier is realized through driving after the position is identified by CCD equipment, and the second carrier is driven to move through a driving mechanism, so that the separation and the covering between the first carrier and the second carrier are realized.
Further, a product placement groove is formed on the first carrier 1, the display component 3 to be tested is placed in the product placement groove, and the size of the product placement groove is adjustable so as to adapt to display components with different sizes.
Further, an isolation buffer member 22 is provided around the edge of the detection end of each optical sensing component 21, when the first carrier 1 and the second carrier 2 are covered, the isolation buffer member 22 is used for isolating and buffering, so that a darkroom is formed between the display component 3 to be detected and the optical sensing component 21, and the adjacent optical sensing components 21 are not interfered. The isolation bumper 22 may be foam.
Further, on the surface close to the first carrier 1, the surface of the enclosure 23 of the second carrier 2 is 0.05mm lower than the corresponding surface of the isolation buffer member 22, so that the isolation buffer member 22 can be extruded when the second carrier 2 and the first carrier 1 are covered, and the isolation and darkroom effects are ensured.
Further, in the detection area, adjacent optical sensing components 21 are closely arranged without gaps, so that a greater number of optical sensing components 21 can be arranged in the detection area, and denser and accurate detection of the display components to be detected can be realized.
Further, a light source for providing backlight for the display component to be tested is further arranged below the product placement groove of the first carrying platform 1, the light source is a 100% uniform backlight source, and the display component to be tested is a passive light-emitting component, so that the test of the display component can be realized due to the structural form of the light source, and meanwhile, uneven display caused by uneven light emission of the backlight can be removed.
According to the scheme, the detection area is set according to the display component 3 to be detected, a plurality of optical sensing components 21 are densely arranged on the detection area, each optical sensing component 21 is correspondingly positioned in a darkroom during detection, detected data are subsequently sent to the upper computer through the concentrator for processing and judging, automatic testing can be achieved on the display component, and further accurate testing can be achieved.
To sum up, the beneficial effect of this scheme lies in: 1. objectively judging defects can be realized; 2. it can be matched with machine vision equipment to expand the detection of the type into an automatic test tool. 3. The loss of backlight materials can be reduced.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The method for detecting the display effect is characterized by comprising the following steps of: step 1: providing a testing device, said testing device comprising: the display device comprises a first carrier and a second carrier, wherein the first carrier is used for bearing display components to be tested, a plurality of optical sensing components are arranged on the second carrier in an array manner, and the optical sensing components are arranged to form a detection area;
step 2: placing the display assembly to be tested on the first carrying platform and lighting the display assembly, covering the second carrying platform on the first carrying platform, so that the detection area is correspondingly covered above the display assembly to be tested, and a darkroom is formed between each optical sensing assembly and the display area of the display assembly to be tested;
step 3: the optical sensing assembly detects the optical parameters, and then whether the display assembly to be detected is qualified or not is determined by calculating and/or judging the optical parameters.
2. The method according to claim 1, wherein in the step 3, the optical parameter detected by the optical sensing component includes a brightness value and/or a color coordinate.
3. The method for detecting a display effect according to claim 1 or 2, wherein the optical sensing component is electrically connected to the host computer and operates under the control of the host computer.
4. The method for detecting a display effect according to claim 1 or 2, further comprising step 1.1: the number and arrangement shape of the optical sensing components in the detection area are set according to the size and shape of the display components to be detected.
5. The method for detecting a display effect according to claim 1 or 2, wherein the first stage and the second stage are rotatably connected to each other, thereby achieving separation and closing between the first stage and the second stage; when the first carrier and the second carrier are covered, all the optical display components and the display components to be tested are positioned in a darkroom space formed by the covering of the first carrier and the second carrier.
6. The method for detecting a display effect according to claim 1 or 2, wherein the second stage is provided on a driving mechanism that controls to realize separation and closing between the first stage and the second stage; when the first carrier and the second carrier are covered, all the optical display components and the display components to be tested are positioned in a darkroom space formed by the covering of the first carrier and the second carrier.
7. The method for detecting a display effect according to claim 1 or 2, wherein a product placement groove is formed on the first carrier, a display component to be detected is placed in the product placement groove, and the size of the product placement groove is adjustable.
8. The method of claim 1 or 2, wherein an isolation buffer is provided around the edge of the detection end of each of the optical sensing elements.
9. The method of claim 8, wherein the second stage has a baffle surface 0.05mm lower than the corresponding surface of the isolation buffer on a side near the first stage; in the detection area, adjacent optical sensing components are closely distributed.
10. The method for detecting a display effect according to claim 1 or 2, wherein a light source for providing backlight to a display component to be detected is further provided below the product placement groove of the first stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410078541.XA CN117826461A (en) | 2024-01-18 | 2024-01-18 | Display effect detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410078541.XA CN117826461A (en) | 2024-01-18 | 2024-01-18 | Display effect detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117826461A true CN117826461A (en) | 2024-04-05 |
Family
ID=90515358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410078541.XA Pending CN117826461A (en) | 2024-01-18 | 2024-01-18 | Display effect detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117826461A (en) |
-
2024
- 2024-01-18 CN CN202410078541.XA patent/CN117826461A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7586323B2 (en) | Apparatus and method for inspecting liquid crystal display | |
| CN201145788Y (en) | LCD/LCM automatic optical detector | |
| KR100762814B1 (en) | Display panel module, display unit, inspection device for display panel and inspection method for display panel | |
| US5717780A (en) | Checking apparatus for flat type display panels | |
| US8428334B2 (en) | Inspection System | |
| US7800568B2 (en) | Apparatus and method for inspecting liquid crystal display | |
| KR101256369B1 (en) | Flat display pannel test equipment and test method using multi ccd camera | |
| KR20080054596A (en) | Apparatus for inspecting flat panel display and method thereof | |
| KR20170122540A (en) | Automated Vision Inspection System | |
| CN112304969A (en) | Display module detection device, method, apparatus and system and storage medium | |
| CN100547374C (en) | The detection system and the method that are used for a colored filter | |
| CN109633948A (en) | Display panel testing method and display panel testing | |
| KR102206767B1 (en) | Apparatus for Testing LED Back Light Unit | |
| CN104107806A (en) | LED crystal grain selecting system assisted by computer visual output image recognition and method thereof | |
| CN117826461A (en) | Display effect detection method | |
| KR102037050B1 (en) | Vision testing system for display device and inspecting method thereof | |
| CN205157919U (en) | Automatic optical detector | |
| JP3794298B2 (en) | Inspection device | |
| KR101742260B1 (en) | auto conveying type vision inspection device for a harness | |
| KR20070044897A (en) | Auto trace tester | |
| US20040125367A1 (en) | Method of manufacturing optical device and inspection gauge used for the same | |
| JP2005156957A (en) | Display inspecting device of liquid crystal display and its display inspecting method | |
| JP3311628B2 (en) | Defect location device for thin display devices | |
| CN111721505A (en) | Automatic calibration detection method and device for keyboard backlight module based on polar coordinates | |
| KR100796521B1 (en) | The inspection equipment of lcd |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |