CN207096622U - A kind of detection means based on LCDs - Google Patents
A kind of detection means based on LCDs Download PDFInfo
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- CN207096622U CN207096622U CN201721004515.4U CN201721004515U CN207096622U CN 207096622 U CN207096622 U CN 207096622U CN 201721004515 U CN201721004515 U CN 201721004515U CN 207096622 U CN207096622 U CN 207096622U
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- transfer module
- lcds
- light source
- image collection
- collection assembly
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Abstract
The utility model provides a kind of detection means based on LCDs, including the first transfer module, the second transfer module, the first image collection assembly, the first light source, the second image collection assembly and secondary light source；Wherein, described first image acquisition component and the first light source are located at the top of the first transfer module mobile route, for detecting positioned at the front of LCDs on the first transfer module；Second image collection assembly and secondary light source are located at the lower section of the second transfer module mobile route, for detecting the reverse side positioned at LCDs on the second transfer module.By setting the first transplanting module and the second transfer module to realize that liquid crystal panel moves in the utility model, detect the positive and negative of LCDs respectively by the first image collection assembly and the second image collection assembly, the defects of its spot, pit, cut, aberration, defect, can be detected, the degree of accuracy is high, and can long-time stable work, improve operating efficiency.
Description
Technical field
It the utility model is related to detection device technical field, and in particular to a kind of detection means based on LCDs.
Background technology
LCDs, English are commonly referred to as LCD (Liquid Crystal Display), are belong to flat-panel screens one
Kind, the screen display for television set and computer.LCD, which is shown, has used two panels polarization material, is liquid water between them
Brilliant solution.Electric current during the liquid by that can rearrange crystal, so that light can not pass through them.Therefore, each crystal is just
As shutter, light can be allowed to be obstructed the light through and can.
The method that traditional LCDs surface quality detection mainly uses artificial detection.Using the method for artificial detection
With following defect, 1) manual detection work amount is big, and detection efficiency is low；2) the easily influence of examined personnel's subjective factor, to production
Product surface defect causes missing inspection, and precision is low, especially deforms inclusion defect missing inspection smaller, that distortion is little, greatly reduces production
The surface quality of product, so as to it is impossible to ensure that the efficiency and precision of detection.
Utility model content
(1) technical problems to be solved
The purpose of this utility model is to provide a kind of detection means based on LCDs, to solve to examine in the prior art
The problem of surveying low efficiency and missing inspection, improve detection efficiency and precision.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model provides a kind of detection means based on LCDs, including
First transfer module, the second transfer module, the first image collection assembly, the first light source, the second image collection assembly and the second light
Source；Wherein, described first image acquisition component and the first light source are located at the top of the first transfer module mobile route, are used for
Detection is positioned at the front of LCDs on the first transfer module；Second image collection assembly and secondary light source are located at
The lower section of the second transfer module mobile route, for detecting the anti-of on the second transfer module LCDs
Face.
Wherein, the first transfer module includes the first guide rail and the first fixture slided along first guide rail；Institute
Stating the second transfer module includes the second guide rail and the second fixture slided along second guide rail；First fixture and
Two fixtures are used to fix the LCDs.
Wherein, first fixture is the first manipulator, and second fixture is the second manipulator, first machine
Sucker is equipped with tool hand and the second manipulator, the sucker is used to fix the LCDs.
Wherein, the translational speed of first manipulator and the second manipulator is 350~450mm/s.
Wherein, described first image acquisition component includes the first line-scan digital camera and the mirror coordinated with first line-scan digital camera
Head；Second image collection assembly includes the second line-scan digital camera and the camera lens coordinated with second line-scan digital camera.
Wherein, first line-scan digital camera is set perpendicular to the moving direction of the first transfer module；Second line
Array camera is set perpendicular to the moving direction of the second transfer module.
Wherein, first light source and secondary light source are LED linear light source.
(3) beneficial effect
Compared with prior art, the utility model has the following advantages that：By setting the first transfer module and the second transfer
Module realizes the movement of LCDs；Liquid crystal is detected by the first image collection assembly and the second image collection assembly respectively
The positive and negative of display screen, the defects of spot of LCDs, pit, cut, aberration, defect, can be detected, the degree of accuracy
Height, and can long-time stable work, reduce and manually sentence the used time again, improve operating efficiency and LCDs shunt it is quick
Property, reach the purpose for improving product quality.
Brief description of the drawings
Fig. 1 is a kind of part-structure schematic diagram of the detection means based on LCDs in the utility model embodiment；
Fig. 2 is a kind of part-structure schematic diagram of the detection means based on LCDs in the utility model embodiment；
Description of reference numerals
1- camera installing plates；The line-scan digital cameras of 2- first；3- camera lenses；The light sources of 4- first；5- LCDs；The machineries of 6- first
Hand；7- the first transfer modules；8- the second transfer modules；9- camera installing plates；The line-scan digital cameras of 10- second；11- secondary light sources；12-
Second manipulator.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Example is used to illustrate the utility model, but is not limited to the scope of the utility model.
, it is necessary to which explanation, unless otherwise indicated, " multiple " are meant that two or two in description of the present utility model
More than individual；The instruction such as term " on ", " under ", "left", "right", " interior ", " outer ", " front end ", " rear end ", " head ", " afterbody "
Orientation or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplification is retouched
State, rather than instruction or imply signified device or element there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for describing purpose, and
It is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
As shown in Figure 1, 2, a kind of detection means based on LCDs provided for the present embodiment, including the first transfer
Module 7, the second transfer module 8, the first image collection assembly, the first light source 4, the second image collection assembly and secondary light source 11.
First image collection assembly and the first light source 4 are located at the top of the mobile route of the first transfer module 7, for detecting position
In the front of LCDs 5 on the first transfer module 7；Second image collection assembly and secondary light source 4 move positioned at second
The lower section of the mobile route of module 8 is carried, for detecting the reverse side positioned at LCDs 5 on the second transfer module 8.
In the present embodiment, the first image collection assembly includes the first line-scan digital camera 2 and the mirror coordinated with the first line-scan digital camera 2
First 3；Second image collection assembly includes the second line-scan digital camera 10 and the camera lens coordinated with the second line-scan digital camera 10.Further,
First line-scan digital camera 2 is set perpendicular to the moving direction of the first transfer module 7；Second line-scan digital camera 10 is perpendicular to the second transfer mould
The moving direction of group 8 is set.Specifically, the first line-scan digital camera 2 is linearly mounted in camera installing plate 1 by multiple CDD cameras；The
Two array cameras 10 are linearly mounted in camera installing plate 9 by multiple CDD cameras.
Specifically, the first transfer module includes the first guide rail and the first fixture slided along the first guide rail；Second transfer
Module includes the second guide rail and the second fixture slided along the second guide rail；First fixture and the second fixture are used for fixer
Crystal display screen.In the present embodiment, the first fixture is the first manipulator 6.Second fixture is the second manipulator 12.First machinery
Sucker is equipped with the manipulator 12 of hand 6 and second.Sucker is used to fix LCDs 5.Further, the He of the first manipulator 6
The translational speed of second manipulator 12 is 350~450mm/s.Preferably, the mobile speed of the first manipulator 6 and the second manipulator 12
Spend for 400mm/s.
In the present embodiment, the center of the first line-scan digital camera 2 and the first light source 4 are centrally located at the same on vertical direction
On straight line and the vertical range of first the 2 to the first transfer of line-scan digital camera module 7 is more than first the 4 to the first transfer of the light source module 7
Vertical range.The center of second line-scan digital camera 10 and secondary light source 11 be centrally located on the same straight line on vertical direction,
And second the 10 to the second transfer of line-scan digital camera module 8 vertical range be more than the line-scan digital camera of secondary light source 11 to the second 10 it is vertical
Distance.In the present embodiment, the first light source 4 and secondary light source 11 are LED linear light source.
Below by specific process, further detailed description.
The front detection of LCDs 5；Liquid crystal panel 5 is face-up fixed by the sucker on the first manipulator 6.First
Manipulator 6 slides along the first slide rail, LCDs 5 is passed through in the lower section of the first line-scan digital camera 2.First light source 4 is radiated at
On liquid crystal panel 5, the first line-scan digital camera 2 obtains 5 positive image of liquid crystal panel, and judges whether the front of liquid crystal panel 5 has
Defect.
The reverse side detection of LCDs 5；Liquid crystal panel 5 is face-up fixed by the sucker on the second manipulator 12.The
Two manipulators 12 slide along the second slide rail, LCDs 5 is passed through above the second line-scan digital camera 9.Secondary light source 11 irradiates
On liquid crystal panel 5, the second line-scan digital camera 9 obtain the reverse side of liquid crystal panel 5 image, and judge liquid crystal panel 5 reverse side whether
It is defective.
The order detected to the positive and negative surface of liquid crystal panel 5 not necessarily first passes through the first image collection assembly
The reverse side for detecting liquid crystal panel 5 behind the front of liquid crystal panel 5 by the second image collection assembly again is detected, front reverse side is only here
Play a part of distinguishing the different surfaces of liquid crystal panel 5, not difference sequentially.
For the type selecting of CCD camera in the first line-scan digital camera in the present embodiment and the second line-scan digital camera, below with liquid crystal
The full-size of display screen 4 be 75 inches (1804*1175*0.5mm) exemplified by illustrate.
During the detection of LCDs front, entered with short side for feeding port, the detection visual field is more than 1175mm.In the present embodiment,
Camera fields of view is defined as 1250mm, that is, it is 1250mm to detect breadth value.When LCDs reverse side detects, entered with long side to be upper
During material mouth, the detection visual field is more than 1804mm；In the present embodiment, camera fields of view is defined as 1880mm, that is, detects breadth value and be
1880mm。
Determine that accuracy of detection is defined as 0.05mmpixel, consider that mechanical structure, empirical value are parallel with the operation of large size panel
Degree ± 0.5mm, it is total to go up some：In order to reach accuracy of detection, the Selection and Design of camera calculates according to 1/2 sub-pix, i.e.,
0.025mmpixel。
The translational speed for determining transmission belt is 400mm/s.
Calculate the resolution ratio of the first line-scan digital camera：Breadth divided by minimum detection precision draw the pixel that every row needs：
1250mm/0.025mmpixel=50000pixel
The often row pixel of 16K cameras is 16384pixel, it is therefore desirable to 4 16K cameras.
Calculate the resolution ratio of the second line-scan digital camera：Breadth divided by minimum detection precision draw the pixel that every row needs：
1880mm/0.025mmpixel=75200pixel
The often capable pixel of 16K cameras is 16384pixel, it is therefore desirable to 5 16K cameras.The overlapping portion of adjacent cameras
Divide and be predefined for 20mm, the visual field of single camera is 400mm, available accuracy 0.024mmpixel, meets the accuracy of detection determined；
The number of scanning lines per second is 400mm/s/0.02mmpixel=20KHz.The line frequency of 16K cameras is 48KHz, meets scan line per second
Number.Consider and select 16K cameras.
The photosurface size of 16K cameras is 57.67mm.The camera lens magnifying power β needed is 0.163.Set the work of camera
Distance is 652mm, and then tries to achieve lens focus 91mm, so from 90mm camera lenses.
In summary, in the present embodiment, the first line-scan digital camera includes 4 16K cameras, and the second line-scan digital camera includes 5 16K
Camera, camera lens are 90mm camera lenses.
The present embodiment provides a kind of detection means based on LCDs, by setting the first transfer module and second to move
Carry the movement that module realizes LCDs；Liquid crystal is detected by the first image collection assembly and the second image collection assembly respectively
The positive and negative of display screen, the defects of spot of LCDs, pit, cut, aberration, defect, can be detected, accurately
Degree is high, and can long-time stable work, reduce and manually sentence the used time again, improve operating efficiency and LCDs shunt it is fast
Speed, reach the purpose for improving product quality.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (7)
- A kind of 1. detection means based on LCDs, it is characterised in that including the first transfer module, the second transfer module, First image collection assembly, the first light source, the second image collection assembly and secondary light source；Wherein, described first image collection group Part and the first light source are located at the top of the first transfer module mobile route, are located at the first transfer module for detecting The front of LCDs；Second image collection assembly and secondary light source are located at the second transfer module mobile route Lower section, for detecting the reverse side positioned at LCDs on the second transfer module.
- 2. detection means according to claim 1, it is characterised in that the first transfer module includes the first guide rail and edge The first fixture that first guide rail slides；The second transfer module includes the second guide rail and slided along second guide rail The second fixture；First fixture and the second fixture are used to fix the LCDs.
- 3. detection means according to claim 2, it is characterised in that first fixture is the first manipulator, described Second fixture is the second manipulator, and sucker is equipped with first manipulator and the second manipulator, and the sucker is used for solid The fixed LCDs.
- 4. detection means according to claim 3, it is characterised in that the movement of first manipulator and the second manipulator Speed is 350~450mm/s.
- 5. detection means according to claim 1, it is characterised in that described first image acquisition component includes the first linear array Camera and the camera lens coordinated with first line-scan digital camera；Second image collection assembly include the second line-scan digital camera and with institute State the camera lens of the second line-scan digital camera cooperation.
- 6. detection means according to claim 5, it is characterised in that first line-scan digital camera moves perpendicular to described first The moving direction for carrying module is set；Second line-scan digital camera is set perpendicular to the moving direction of the second transfer module.
- 7. detection means according to claim 1, it is characterised in that first light source and secondary light source are LED linear Light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721004515.4U CN207096622U (en) | 2017-08-11 | 2017-08-11 | A kind of detection means based on LCDs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721004515.4U CN207096622U (en) | 2017-08-11 | 2017-08-11 | A kind of detection means based on LCDs |
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| Publication Number | Publication Date |
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| CN207096622U true CN207096622U (en) | 2018-03-13 |
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| CN201721004515.4U Active CN207096622U (en) | 2017-08-11 | 2017-08-11 | A kind of detection means based on LCDs |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872251A (en) * | 2018-08-02 | 2018-11-23 | 北京兆维科技开发有限公司 | A kind of image acquisition mechanism and system of display screen |
| CN110243833A (en) * | 2019-06-29 | 2019-09-17 | 苏州精濑光电有限公司 | A kind of gross imperfection detection machine |
| CN111595780A (en) * | 2020-05-12 | 2020-08-28 | 北京兆维科技开发有限公司 | Lighting system of screen |
| CN111896552A (en) * | 2020-06-05 | 2020-11-06 | 成都数之联科技有限公司 | Novel notebook shell defect detection equipment |
| CN113390896A (en) * | 2021-05-14 | 2021-09-14 | 北京兆维智能装备有限公司 | Defect detection device and method for large-format miniLED panel |
-
2017
- 2017-08-11 CN CN201721004515.4U patent/CN207096622U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872251A (en) * | 2018-08-02 | 2018-11-23 | 北京兆维科技开发有限公司 | A kind of image acquisition mechanism and system of display screen |
| CN110243833A (en) * | 2019-06-29 | 2019-09-17 | 苏州精濑光电有限公司 | A kind of gross imperfection detection machine |
| CN111595780A (en) * | 2020-05-12 | 2020-08-28 | 北京兆维科技开发有限公司 | Lighting system of screen |
| CN111896552A (en) * | 2020-06-05 | 2020-11-06 | 成都数之联科技有限公司 | Novel notebook shell defect detection equipment |
| CN111896552B (en) * | 2020-06-05 | 2023-09-19 | 成都数之联科技股份有限公司 | Novel notebook shell defect detection equipment |
| CN113390896A (en) * | 2021-05-14 | 2021-09-14 | 北京兆维智能装备有限公司 | Defect detection device and method for large-format miniLED panel |
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