CN208172420U - A kind of liquid crystal module open defect detection system - Google Patents
A kind of liquid crystal module open defect detection system Download PDFInfo
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- CN208172420U CN208172420U CN201820736405.5U CN201820736405U CN208172420U CN 208172420 U CN208172420 U CN 208172420U CN 201820736405 U CN201820736405 U CN 201820736405U CN 208172420 U CN208172420 U CN 208172420U
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- dust cloth
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Abstract
A kind of liquid crystal module open defect detection system, including picture shooting assembly, Wipe assembly and and transmission device, picture shooting assembly and Wipe assembly are located above transmission device, liquid crystal module transmits on transmission device, picture shooting assembly includes camera, camera lens, light source one and light source two, camera lens is arranged on camera, light source one and light source two are arranged below camera lens, light source one and light source two are used to illuminate the liquid crystal module that lower section passes through, there are angles between light source one and the light beam and liquid crystal module of the transmitting of light source two, camera lens is used to acquire the image for the liquid crystal module that lower section passes through, Wipe assembly is used to wipe the liquid crystal surfactant of liquid crystal module.The utility model replaces traditional artificial detection using machine vision automatic detection, realizes the automatic detection of liquid crystal module, reduces testing cost, improve detection efficiency and precision.
Description
Technical field
The utility model belongs to technical field of machine vision, is related to the detection of liquid crystal module, is a kind of liquid crystal module appearance
Defect detecting system.
Background technique
Flat panel display is a part indispensable in the modern life, and application field is very extensive, main at present
Downstream field includes smart phone, tablet computer, laptop, TV, display etc., and following it is possible that in automobile electricity
The emerging fields such as son, Industry Control, electronic tag, intelligent medical treatment are played an important role.With the popularity of the internet, intelligence becomes
The continuous propulsion of gesture, the following 5G application bring information flow impact, interface of the liquid crystal display as human-computer interaction, market rule
Mould constantly expands with the increase of the terminal devices quantity such as smart phone, and demand and shipment area rise year by year.Liquid
Important component of the brilliant mould group as flat panel display can all carry out stringent quality inspection before shipment, and at present in industry
It detects significant portion to rely on manually, this brings three client's pain spots：1) needs are a large amount of artificial, and human cost and management cost are continuous
It improves；2) the uncontrollable of artificial detection state brings the uncontrollability of product quality；3) dull and rush season brings artificial allotment difficult.
Therefore, traditional artificial detection method is replaced to be very necessary using machine vision automatic detection.
Summary of the invention
Problem to be solved in the utility model is：Foreign matter, the bubble inside liquid crystal module are effectively detected by machine vision
Defect and the scuffing defect on liquid crystal module surface, but not to the dust erroneous detection on liquid crystal module surface.
The technical solution of the utility model is：A kind of liquid crystal module open defect detection system, including picture shooting assembly, wiping
Component and with transmission device, picture shooting assembly and Wipe assembly be located above transmission device, and liquid crystal module transmits on transmission device,
Picture shooting assembly includes camera, camera lens, light source one and light source two, and camera lens is arranged on camera, and light source one and light source two are arranged in mirror
Head lower section, light source one and light source two are used to illuminate the liquid crystal module that lower section passes through, the light beam and liquid that light source one and light source two emit
There are angle between brilliant mould group, camera lens is used to acquire the image for the liquid crystal module that lower section passes through, and Wipe assembly is for wiping liquid crystal
The liquid crystal surfactant of mould group.
Further, Wipe assembly includes wiping block, non-dust cloth roller one, non-dust cloth roller two and non-dust cloth, non-dust cloth
Then one end is wound on non-dust cloth roller two again on non-dust cloth roller one through wiping block, wiping block, non-dust cloth roller
One and non-dust cloth roller two constitute triangle, wiping block is arranged above liquid crystal module, when liquid crystal module is sent to below wiping block
When, non-dust cloth roller one and non-dust cloth roller two roll, and non-dust cloth is driven to wipe the surface of liquid crystal module.
It is preferred that camera is line-scan digital camera, camera lens is that line sweeps camera lens, and light source one and light source two are linear light source.
It is preferred that light source one and light source two are White LED band lens linear light source, the light of light source one and light source two
Angle with vertical direction is 30 °~60 °, the vertical range on light source one and light source two and liquid crystal module surface be 10mm~
20mm, and the middle axial plane of light source one, light source two and camera lens is intersected in a line, intersection line is located at liquid crystal module surface.
It is preferred that transmission device includes carrier and sliding slot, liquid crystal module is placed on carrier, and carrier is slided on the chute
Dynamic transmission.
When utility model works, liquid crystal module carries out first time image checking under camera lens, is then transmitted by carrier
Below to wiping block, the dust on liquid crystal module surface is wiped, is then resent under camera lens and carries out second of image checking, pass through
Testing result compares twice, eliminates the influence of dust, will not generate erroneous detection to the dust on liquid crystal module surface, pass through machine vision
Technology analyzes acquired image, the correct foreign matter detected inside liquid crystal module, air blister defect and stroke on liquid crystal module surface
Hurt defect.
The utility model replaces traditional artificial detection using machine vision automatic detection, realizes the automatic inspection of liquid crystal module
It surveys, reduces testing cost, improve detection efficiency and precision.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram of the utility model embodiment.
Fig. 2 is the detection principle diagram of the utility model.
Fig. 3 is the structural schematic diagram of the picture shooting assembly embodiment of the utility model.
Specific embodiment
Illustrate the implementation of the utility model below by specific embodiment.
As shown in Figure 1, being a specific embodiment of the utility model, including picture shooting assembly, Wipe assembly and and transmission
Device, picture shooting assembly and Wipe assembly are located above transmission device, and liquid crystal module 10 transmits on transmission device.
Picture shooting assembly includes camera 5, camera lens 6, light source 1 and light source 28, and camera lens 6 is arranged on camera 5, one 7 He of light source
Light source 28 is arranged below camera lens 6, and light source 1 and light source 28 are used to illuminate the liquid crystal module 10 that lower section passes through, one 7 He of light source
There are angle between the light beam that light source 28 emits and liquid crystal module 10, camera lens 6 is used to acquire the liquid crystal module 10 that lower section passes through
Image, Wipe assembly are used to wipe the liquid crystal surfactant of liquid crystal module 10.
Wipe assembly includes wiping block 3, non-dust cloth roller 1, non-dust cloth roller 22 and non-dust cloth 4,4 one end of non-dust cloth
It on non-dust cloth roller 1, is then wound on non-dust cloth roller 22 again through wiping block 3, wiping block 3, non-dust cloth roller
1 and non-dust cloth roller 22 constitute triangle, wiping block 3 be arranged above liquid crystal module 10, when liquid crystal module 10 is sent to wiping
When 3 lower section of block, non-dust cloth roller 1 and non-dust cloth roller 22 are rolled, and non-dust cloth 4 is driven to carry out the surface of liquid crystal module 10
Wiping.In addition to the structure of above-mentioned Wipe assembly, can also be realized by modes such as robotic arm manipulation dust removal brush, Dust-proof rotary drums to liquid
The wiping dedusting on brilliant mould group surface.
Transmission device includes carrier 9 and sliding slot 13, and liquid crystal module 10 is placed on carrier 9, and carrier 9 slides biography on sliding slot 13
It send.
In the present embodiment, the camera 5 of picture shooting assembly is erected above transmission device by a support frame, and support frame is by phase
Machine supporting module 1, camera support module 2 15 and these three modules of camera support module 3 18 composition, so that camera lens
The Liquid crystal module 10 that transmission is passed through below face, light source 1 and light source 28 pass through light source support frame 1, light source support frame two
17 are arranged above Liquid crystal module 10.Wipe assembly is fixed on above transmission device by drum eraser boss fixed plate 11.Transmission
The sliding slot 13 of device is arranged on bottom plate 12.Drum eraser boss fixed plate 11, bottom plate 12, light source support frame 1, light source support
Frame 2 17, camera support module 1, camera support module 2 15 and camera support module 3 18 these support constructions can connect
Be connected together so that the utility model structure constitute a compact entirety, can also according to the actual environment of production line come into
Row is fixed.
The preferred camera of the utility model is line-scan digital camera, and camera lens is that line sweeps camera lens, and light source one and light source two are linear light source, institute
System is stated for detecting foreign matter, air blister defect and the scuffing defect on liquid crystal module surface inside liquid crystal module, but not to liquid
The dust erroneous detection on brilliant mould group surface.Line-scan digital camera, line sweep the selection of camera lens and linear light source in this implementation of lower surface analysis：
To detect liquid crystal module full-size as 7 inches, it is testing conditions that detection liquid crystal module minimum defect, which is 0.1mm,
Detection liquid crystal module defect does not need to carry color information, it is contemplated that pixel equivalent needs certain design margin, Ke Yixuan
Select 8K linear array black and white camera.As shown in figure 3, camera lens lower end is 300mm to 500mm apart from liquid crystal module surface.According to phase
The lens interface of machine requires and the proper operation of detection distance considers, can choose F mouthfuls of fixed-focus 35mm camera lenses.
It is required according to image checking, needing to improve light-source brightness as far as possible keeps the contrast of liquid crystal module defect big as far as possible, can
With two White LED band lens linear light sources of selection.As shown in figure 3, in order to guarantee brightness of image, light source one and light source two and vertical
The angle in direction is 30 ° to 60 °, that is, uses lit sideways liquid crystal module surface, light source one and light source two and liquid crystal module surface
Vertical range be 10mm to 20mm, and the middle axial plane of light source one, light source two and camera lens is intersected in a line, intersection line position
In liquid crystal module surface.
As shown in Fig. 2, liquid crystal module carries out first time image checking under camera lens in the present embodiment, pass through image at this time
Processing Algorithm can detecte out the scuffing defect and dust on internal foreign matter, air blister defect and liquid crystal module surface.Then liquid
Brilliant mould group is transmitted to below wiping block by carrier, and non-dust cloth wipes the ash on liquid crystal module surface under the drive of non-dust cloth roller
Dirt, the dust fraction on liquid crystal module surface can be by wiped clean at this time, and part is not by wiped clean but can be subjected to displacement.Then liquid
Brilliant mould group, which is resent under camera lens, carries out second of image checking, detects the different of inside again by image processing algorithm at this time
The scuffing defect and dust of object, air blister defect and liquid crystal module surface compare testing result twice, internal foreign matter, gas
Steep the scuffing defect on defect and liquid crystal module surface since position will not be moved by wiping, it twice can be in liquid crystal mould
The same position of group is detected, and the dust on surface or by wiped clean but position can not can occur by wiped clean or
It moves, therefore cannot be detected simultaneously twice in same position, it is possible thereby to correctly detect liquid crystal module defect, and not to liquid
The dust erroneous detection on brilliant mould group surface.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in be also one of the embodiments of the present invention, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (5)
1. a kind of liquid crystal module open defect detection system, it is characterized in that include picture shooting assembly, Wipe assembly and and transmission device,
Picture shooting assembly and Wipe assembly are located above transmission device, and liquid crystal module (10) transmits on transmission device, and picture shooting assembly includes
Camera (5), camera lens (6), light source one (7) and light source two (8), camera lens (6) are arranged on camera (5), light source one (7) and light source two
(8) below camera lens (6), light source one (7) and light source two (8) are used to illuminate the liquid crystal module (10) that lower section passes through, light source for setting
There are angle between one (7) and the light beam and liquid crystal module (10) of light source two (8) transmitting, camera lens (6) passes through for acquiring lower section
Liquid crystal module (10) image, Wipe assembly is used to wipe the liquid crystal surfactants of liquid crystal module (10).
2. a kind of liquid crystal module open defect detection system according to claim 1, it is characterized in that Wipe assembly includes wiping
Boss (3), non-dust cloth roller one (1), non-dust cloth roller two (2) and non-dust cloth (4), non-dust cloth (4) one end is wound on non-dust cloth
It on roller one (1), is then wound on non-dust cloth roller two (2) again through wiping block (3), wiping block (3), non-dust cloth roller one
(1) and non-dust cloth roller two (2) constitutes triangle, and wiping block (3) setting is above liquid crystal module (10), when liquid crystal module (10) pass
When sending to wiping block (3), non-dust cloth roller one (1) and non-dust cloth roller two (2) are rolled, and drive non-dust cloth (4) to liquid crystal
The surface of mould group (10) is wiped.
3. a kind of liquid crystal module open defect detection system according to claim 1 or 2, it is characterized in that camera (5) is line
Array camera, camera lens (6) are that line sweeps camera lens, and light source one (7) and light source two (8) are linear light source.
4. a kind of liquid crystal module open defect detection system according to claim 1 or 2, it is characterized in that light source one (7) and
Light source two (8) is White LED band lens linear light source, and the angle of the light and vertical direction of light source one (7) and light source two (8) is
30 °~60 °, the vertical range on light source one (7) and light source two (8) and liquid crystal module (10) surface is 10mm~20mm, and light source
The middle axial plane of one (7), light source two (8) and camera lens (6) is intersected in a line, and intersection line is located at liquid crystal module (10) surface.
5. a kind of liquid crystal module open defect detection system according to claim 1 or 2, it is characterized in that transmission device includes
Carrier (9) and sliding slot (13), liquid crystal module (10) are placed on carrier (9), and carrier (9) slides transmission on sliding slot (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820736405.5U CN208172420U (en) | 2018-05-17 | 2018-05-17 | A kind of liquid crystal module open defect detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820736405.5U CN208172420U (en) | 2018-05-17 | 2018-05-17 | A kind of liquid crystal module open defect detection system |
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| CN208172420U true CN208172420U (en) | 2018-11-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724985A (en) * | 2018-12-12 | 2019-05-07 | 江苏大学 | A kind of automatic detection device of plate surface defect |
| CN110687126A (en) * | 2019-10-31 | 2020-01-14 | 南宁华数轻量化电动汽车设计院有限公司 | Plank shooting device and defect detection system |
| CN114273278A (en) * | 2021-12-16 | 2022-04-05 | 凌云光技术股份有限公司 | System and method for automatically wiping display screen dirt |
-
2018
- 2018-05-17 CN CN201820736405.5U patent/CN208172420U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724985A (en) * | 2018-12-12 | 2019-05-07 | 江苏大学 | A kind of automatic detection device of plate surface defect |
| CN110687126A (en) * | 2019-10-31 | 2020-01-14 | 南宁华数轻量化电动汽车设计院有限公司 | Plank shooting device and defect detection system |
| CN110687126B (en) * | 2019-10-31 | 2024-05-24 | 南宁华数轻量化电动汽车设计院有限公司 | Plank shooting device and defect detection system |
| CN114273278A (en) * | 2021-12-16 | 2022-04-05 | 凌云光技术股份有限公司 | System and method for automatically wiping display screen dirt |
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