CN108490661B - Display screen optical detection device - Google Patents
Display screen optical detection device Download PDFInfo
- Publication number
- CN108490661B CN108490661B CN201810500472.1A CN201810500472A CN108490661B CN 108490661 B CN108490661 B CN 108490661B CN 201810500472 A CN201810500472 A CN 201810500472A CN 108490661 B CN108490661 B CN 108490661B
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- China
- Prior art keywords
- display screen
- clamping groove
- driving
- optical detection
- detection device
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- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 230000003287 optical effect Effects 0.000 title claims abstract description 19
- 239000000523 sample Substances 0.000 claims abstract description 26
- 238000003384 imaging method Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 11
- 239000005304 optical glass Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 11
- 238000004378 air conditioning Methods 0.000 claims description 4
- 238000013519 translation Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000011161 development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 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
Abstract
The invention discloses a display screen optical detection device which comprises a machine base, a cantilever probe module and a detection system, wherein the cantilever probe module and the detection system are arranged on the machine base. The machine base is provided with a clamping groove for clamping a display screen to be detected; the clamping groove is penetrated up and down to expose a display area of the display screen; the cantilever probe module can be electrically conducted with the display screen in the clamping groove to lighten the display screen; the detection system comprises a laser head arranged below the clamping groove, an infrared optical glass and an imaging device which are arranged above the clamping groove, and an image processing and analyzing unit, wherein laser emitted by the laser head irradiates a display screen positioned in the clamping groove, and light rays penetrating through the display screen penetrate through the infrared optical glass and then are imaged by the imaging device; the image processing and analyzing unit receives the image transmitted by the imaging device, processes and analyzes the image, and judges whether the uniformity of the light spots in the image is qualified. The display screen optical detection device can realize the rapid detection of the display screen, and has simple structure and reliable test result.
Description
Technical Field
The invention relates to the technical field of display screen detection, in particular to an optical detection device for a display screen.
Background
With the development of technology, the life is advanced, the development of high-tech industry is promoted, and the industrial scale and the international competition between factories are expanded, so that the liquid crystal display has the advantages of high image quality, small volume, light weight, low driving voltage, low power consumption and the like. Therefore, it is widely used in consumer communication or electronic products such as Personal Digital Assistants (PDAs), mobile phones, camcorders, notebook computers, desktop displays, car displays, and projection televisions.
In the process of manufacturing a display screen, in order to ensure the quality of the product, the display screen is usually required to be detected, wherein the uniformity detection of laser spots of the display screen is involved. In detection, the display screen is usually manually lightened, and then the detection is judged by human eye recognition. However, the detection by naked eyes is easy to cause the condition of missing detection and false detection, the reliability of the detection result is low, and the detection efficiency is low.
Disclosure of Invention
The invention aims to provide an optical detection device for a display screen, which can realize the rapid detection of the display screen, has a simple structure and reliable test results.
To achieve the purpose, the invention adopts the following technical scheme:
a display screen optical detection device, comprising:
the machine seat is provided with a clamping groove for clamping a display screen to be detected; the clamping groove is vertically penetrated to expose a display area of the display screen;
the cantilever probe module is arranged on the base and can be electrically conducted with the display screen positioned in the clamping groove to lighten the display screen; a kind of electronic device with high-pressure air-conditioning system
The detection system comprises a laser head arranged below the clamping groove, an infrared optical glass and an imaging device which are arranged above the clamping groove, and an image processing and analyzing unit, wherein laser emitted by the laser head irradiates the display screen positioned in the clamping groove, and light rays penetrating through the display screen penetrate through the infrared optical glass and then are imaged by the imaging device; the image processing and analyzing unit receives the image transmitted by the imaging device, processes and analyzes the image, and judges whether the uniformity of the light spots in the image is qualified or not.
Further, the cantilever-probe module comprises two cantilever probes and a first driving device for driving the two cantilever probes to move towards or away from the clamping groove together.
Further, the first driving device comprises a first cylinder for driving the two cantilever probes to lift together, a connecting plate connected with the fixed end of the first cylinder and a second cylinder for driving the connecting plate to move horizontally.
Further, the detection system further comprises a fixed block for fixing the laser head and a second driving device for driving the fixed block to lift and horizontally move.
Still further, the second driving means includes:
a lifting sliding table for driving the fixed block to lift;
the guide rod is arranged on the lifting sliding table and guides the fixed block to move; the guide rod is marked with scales; a kind of electronic device with high-pressure air-conditioning system
And the translation sliding table is used for driving the lifting sliding table to horizontally move.
Further, a pressing plate for pressing the display screen to be detected in the clamping groove is arranged on the base; the pressing plate is provided with a through hole for exposing the display area of the display screen.
Further, the base is connected with a third cylinder for driving the pressing plate to move towards or away from the clamping groove.
Further, the display screen optical detection device further comprises a third driving device for driving the base to horizontally move.
Further, the imaging device is a beam-casting camera.
The beneficial effects of the invention are as follows: the display screen to be detected is lightened through the cantilever probe module, the laser head irradiates the display screen, light transmitted through the display screen penetrates through the infrared optical glass and then is imaged through the imaging device, and the image information is received, processed and analyzed through the image processing and analyzing unit so as to judge whether the light spot uniformity is qualified or not, the structure is simple, the detection efficiency is high, and the detection result is reliable.
Drawings
FIG. 1 is a schematic diagram of a display screen optical detection device provided by the invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at I;
fig. 3 is a schematic view of another angle structure of the optical detection device for a display screen provided by the invention.
In the figure: a stand 10; a carrier 20; cantilever-probe module 30; cantilever probe 31; a probe fixing plate 32; a first cylinder 33; a connection plate 34; a second cylinder 35; a laser head 40; a fixed block 41; a lifting slide table 51; a translation slide 52; a guide rod 53; and a display screen 60.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 3, a display screen optical detection device includes a base 10, a cantilever probe module 30 disposed on the base 10, and a detection system. The machine base 10 is connected with a carrying seat 20, and the carrying seat 20 is provided with a clamping groove for clamping a display screen 60 to be detected; the card slot penetrates up and down to expose the display area of the display screen 60. The cantilever-probe module 30 is capable of electrically communicating with the display screen 60 in the card slot to illuminate the display screen 60. The detection system comprises a laser head 40 arranged below the clamping groove, an infrared optical glass and imaging device arranged above the clamping groove, and an image processing and analyzing unit.
During detection, the display screen 60 is clamped in the clamping groove, the cantilever probe module 30 is abutted against the display screen 60 to realize electrical conduction, laser emitted by the laser head 40 irradiates the display screen 60 positioned in the clamping groove, and light rays penetrating through the display screen 60 penetrate through infrared optical glass and then are imaged by the imaging device; the image processing and analyzing unit receives the image transmitted by the imaging device, processes and analyzes the image to judge whether the uniformity of the light spots in the image is qualified, and has the advantages of simple structure, high detection efficiency and reliable detection result.
Specifically, to realize electrical conduction with the display screen so as to light the display screen, the cantilever-probe module 30 includes two cantilever-probes 31 and a first driving device for driving the two cantilever-probes 31 to move toward or away from the card slot together. Wherein two cantilever probes 31 are connected to a probe fixing plate 32; the first driving means includes a first cylinder 33 for driving the probe-fixing plate 32 to be lifted, a connection plate 34 connected to a fixed end of the first cylinder 33, and a second cylinder 35 for driving the connection plate 34 to horizontally move.
In order to realize the omnibearing test of the display screen and the test under the condition of different laser heights, the detection system also comprises a fixed block 41 for fixing the laser head 40 and a second driving device for driving the fixed block 41 to lift and horizontally move. The second driving device includes a lifting sliding table 51 driving the fixing block 41 to lift, a guide rod 53 disposed on the lifting sliding table 51 and guiding the fixing block 41 to move, and a translation sliding table 52 driving the lifting sliding table 51 to move horizontally. The guide 53 is marked with graduations to facilitate accurate height adjustment of the laser head 40 by the operator. The lifting sliding table 51 and the sliding table 52 are both in the prior art, and the specific structure thereof is not described in detail herein.
In order to avoid the influence of the movement of the display screen on the test result, a pressing plate for pressing the display screen 60 to be tested in the clamping groove is arranged on the machine base 10; the platen is provided with a through hole for exposing a display area of the display screen 60 so that light penetrating the display screen is projected on the infrared optical glass.
In order to realize automatic pressing of the display screen, the stand 10 is connected with a third cylinder for driving the pressing plate to move towards or away from the clamping groove.
The test is usually performed in a relatively closed environment to avoid the influence of external light. However, it is inconvenient to take and place the display screen at the test position, and a third driving device for driving the stand 10 to horizontally move may be added. The third driving device can be an air cylinder or a screw rod mechanism, and the bottom surface of the machine base 10 is connected with two guide rails 11 in a sliding connection manner. Therefore, the display screen is taken and placed at the position of the loading and unloading position, and the operation is very convenient.
In the display screen optical detection device, the imaging device is preferably a beam surface-throwing camera, the image processing and analyzing unit is special software for processing and analyzing the uniformity of light spots in the image, the detection precision is high, and the result is reliable.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (6)
1. An optical detection device for a display screen, comprising:
the device comprises a machine base (10), wherein a clamping groove for clamping a display screen (60) to be detected is formed in the machine base (10); the clamping groove is penetrated up and down to expose a display area of the display screen (60);
the cantilever probe module (30) is arranged on the base (10), and the cantilever probe module (30) can be electrically conducted with the display screen (60) positioned in the clamping groove so as to lighten the display screen (60); a kind of electronic device with high-pressure air-conditioning system
The detection system comprises a laser head (40) arranged below the clamping groove, an infrared optical glass and imaging device arranged above the clamping groove, and an image processing and analyzing unit, wherein laser emitted by the laser head (40) irradiates the display screen (60) positioned in the clamping groove, and light rays penetrating through the display screen (60) penetrate through the infrared optical glass and then are imaged by the imaging device; the image processing and analyzing unit receives the image transmitted by the imaging device, processes and analyzes the image and judges whether the uniformity of the light spots in the image is qualified or not;
the detection system further comprises a fixed block (41) for fixing the laser head (40) and a second driving device for driving the fixed block (41) to move up and down and horizontally;
the second driving device includes:
a lifting sliding table (51) for driving the fixed block (41) to lift;
the guide rod (53) is arranged on the lifting sliding table (51) and guides the fixed block (41) to move; the guide rod (53) is marked with scales; a kind of electronic device with high-pressure air-conditioning system
A translation sliding table (52) for driving the lifting sliding table (51) to horizontally move;
the display screen optical detection device further comprises a third driving device for driving the base (10) to horizontally move.
2. The optical detection device for a display screen according to claim 1, wherein the cantilever-probe module (30) comprises two cantilever-probes (31) and a first driving device for driving the two cantilever-probes (31) to move together towards or away from the card slot.
3. The display screen optical detection device according to claim 2, wherein the first driving device comprises a first cylinder (33) for driving the two cantilever probes (31) to lift together, a connecting plate (34) connected with a fixed end of the first cylinder (33), and a second cylinder (35) for driving the connecting plate (34) to move horizontally.
4. The display screen optical detection device according to claim 1, wherein a pressing plate for pressing the display screen (60) to be detected in the clamping groove is arranged on the base (10); the pressure plate is provided with a through hole for exposing a display area of the display screen (60).
5. The display screen optical detection device according to claim 4, wherein the base (10) is connected with a third cylinder for driving the pressing plate to move towards or away from the clamping groove.
6. The display screen optical detection device of claim 1, wherein the imaging device is a beam-casting camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810500472.1A CN108490661B (en) | 2018-05-23 | 2018-05-23 | Display screen optical detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810500472.1A CN108490661B (en) | 2018-05-23 | 2018-05-23 | Display screen optical detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108490661A CN108490661A (en) | 2018-09-04 |
| CN108490661B true CN108490661B (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810500472.1A Active CN108490661B (en) | 2018-05-23 | 2018-05-23 | Display screen optical detection device |
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| Country | Link |
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| CN (1) | CN108490661B (en) |
Citations (9)
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| JP2005221568A (en) * | 2004-02-03 | 2005-08-18 | Micronics Japan Co Ltd | Processor for panel for display |
| JP2006322831A (en) * | 2005-05-19 | 2006-11-30 | Seiko Epson Corp | Deterioration testing device and deterioration test method |
| JP2007064726A (en) * | 2005-08-30 | 2007-03-15 | Seiko Epson Corp | Inspection device for electro-optical panel, and inspection method for electro-optical panel |
| CN202141674U (en) * | 2011-07-05 | 2012-02-08 | 苏州汉朗光电有限公司 | Light transmittance detection device for smectic phase liquid crystal display |
| CN204462584U (en) * | 2015-03-05 | 2015-07-08 | 昆山龙腾光电有限公司 | The lighting of liquid crystal panel detects tool |
| CN206696309U (en) * | 2017-03-30 | 2017-12-01 | 北京兆维电子(集团)有限责任公司 | A kind of touch-screen full automatic point lamp detection probe adjusts pin detent mechanism |
| CN107449584A (en) * | 2017-06-15 | 2017-12-08 | 亚杰科技（江苏）有限公司 | A kind of full-automatic display screen detection device |
| CN208207433U (en) * | 2018-05-23 | 2018-12-07 | 昆山龙雨智能科技有限公司 | A kind of display screen optical detection apparatus |
-
2018
- 2018-05-23 CN CN201810500472.1A patent/CN108490661B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004354502A (en) * | 2003-05-27 | 2004-12-16 | Sony Corp | Projection type image display device and screen |
| JP2005221568A (en) * | 2004-02-03 | 2005-08-18 | Micronics Japan Co Ltd | Processor for panel for display |
| JP2006322831A (en) * | 2005-05-19 | 2006-11-30 | Seiko Epson Corp | Deterioration testing device and deterioration test method |
| JP2007064726A (en) * | 2005-08-30 | 2007-03-15 | Seiko Epson Corp | Inspection device for electro-optical panel, and inspection method for electro-optical panel |
| CN202141674U (en) * | 2011-07-05 | 2012-02-08 | 苏州汉朗光电有限公司 | Light transmittance detection device for smectic phase liquid crystal display |
| CN204462584U (en) * | 2015-03-05 | 2015-07-08 | 昆山龙腾光电有限公司 | The lighting of liquid crystal panel detects tool |
| CN206696309U (en) * | 2017-03-30 | 2017-12-01 | 北京兆维电子(集团)有限责任公司 | A kind of touch-screen full automatic point lamp detection probe adjusts pin detent mechanism |
| CN107449584A (en) * | 2017-06-15 | 2017-12-08 | 亚杰科技（江苏）有限公司 | A kind of full-automatic display screen detection device |
| CN208207433U (en) * | 2018-05-23 | 2018-12-07 | 昆山龙雨智能科技有限公司 | A kind of display screen optical detection apparatus |
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| CN108490661A (en) | 2018-09-04 |
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