CN108872251A - A kind of image acquisition mechanism and system of display screen - Google Patents
A kind of image acquisition mechanism and system of display screen Download PDFInfo
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- CN108872251A CN108872251A CN201810869664.XA CN201810869664A CN108872251A CN 108872251 A CN108872251 A CN 108872251A CN 201810869664 A CN201810869664 A CN 201810869664A CN 108872251 A CN108872251 A CN 108872251A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 61
- 238000001514 detection method Methods 0.000 claims abstract description 171
- 239000003292 glue Substances 0.000 claims abstract description 40
- 238000005498 polishing Methods 0.000 claims description 34
- 230000003287 optical effect Effects 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 47
- 238000012545 processing Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 239000000758 substrate Substances 0.000 description 9
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 5
- 238000006748 scratching Methods 0.000 description 5
- 230000002393 scratching effect Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
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- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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Abstract
The present invention relates to a kind of image acquisition mechanism of display screen and system, display screen includes sequentially connected display screen ontology, COF film and pcb board, and COF film is fixed by UV glue and the positive side of display screen ontology；Image acquisition mechanism includes：Reverse side detection components carry out Image Acquisition for the reverse side to display screen ontology；Display screen ontology detection components carry out Image Acquisition for the front to display screen ontology；PCB detection components carry out Image Acquisition for the front to pcb board；COF detection components, for COF film front and UV glue carry out Image Acquisition；Mounting bracket, reverse side detection components, display screen ontology detection components, PCB detection components and COF detection components are separately mounted in mounting bracket, all kinds of defect types are divided into different zones by invention, parallel processing is individually acquired by the detection components of each region, various types of defects all can sufficiently be collected, improve the precision of detection.
Description
Technical field
The present invention relates to the image acquisition mechanism of mechanical vision inspection technology field more particularly to a kind of display screen and it is
System.
Background technique
The manufacturing process of TFT-LCD liquid crystal display includes many attaching work, such as the patch of TFT substrate and CF substrate
It closes, polaroid and being bonded for substrate of glass etc. have foreign matter in the process and be mingled with wherein, form all kinds of foreign matters, dirty
Defect；Durings glass-cutting, friction drying, vacuum suction etc., it is possible to will cause the physical imperfections such as scratch, impression；COF
Attaching with glass relies on UV glue and closes admittedly, and UV glue is arranged by dispenser, and it is bad to will appear the coating such as disconnected glue during dispensing
Phenomenon；Electrical component patch in PCB substrate occurs missing or problem of faulty soldering.
Above problem will lead to various defects, and wherein most defect can be examined by the appearance of terminal
Out, realize therefore on automatic production line Machine Vision Detection will significant increase factory production capacity, in the prior art, to display screen
When appearance carries out vision-based detection, all defects are all to carry out Image Acquisition, some defect energy quilts by the same light source and camera
It illuminates and is collected completely, and some defects cannot be illuminated well under this light source, cannot be collected completely by camera,
So that whole detection accuracy is limited.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of Image Acquisition of display screen
Mechanism and system are particularly suitable for the detection of large scale display screen appearance, all classes of large size panel appearance detection may be implemented
The acquisition of type defect image, at least one to solve the above technical problems.
On the one hand, the technical solution of present invention solution above-mentioned technical problem is as follows：A kind of image acquisition mechanism of display screen,
For carrying out Image Acquisition to by the display screen of described image collecting mechanism, the display screen includes sequentially connected display screen
Ontology, COF film and pcb board, the COF film are fixedly connected by UV glue with the display screen ontology；Described image collecting mechanism
Including：
Reverse side detection components carry out Image Acquisition for the reverse side to display screen ontology；
Display screen ontology detection components carry out Image Acquisition for the front to display screen ontology；
PCB detection components carry out Image Acquisition for the front to pcb board；
COF detection components, for COF film front and UV glue carry out Image Acquisition；
Reverse side mounting bracket, the reverse side detection components are mounted in the reverse side mounting bracket；
Positive mounting bracket, the display screen ontology detection components, PCB detection components and COF detection components are installed in
In the front mounting bracket.
The beneficial effects of the invention are as follows：Display screen ontology, COF film, UV glue are different with the respective defect type of pcb board, will
Each region with different defect types is divided, and the present invention carries out image by different image collection assemblies respectively and adopts
Collection, by display screen ontology detection components, PCB detection components, COF detection components and reverse side detection components respectively to display screen sheet
The reverse side progress Image Acquisition in the front of body, the front of pcb board, the front of COF film and display screen ontology, the present invention all kinds of will lack
Sunken type is divided into different zones, individually acquires parallel processing by the detection components of each region, the present invention is directed to different defect classes
The region of type uses individual Image Acquisition, various types of defects all can sufficiently be collected, improve the precision of detection, together
When image acquisition mechanism image information can independently be uploaded preservation to processor so that display screen to be detected is quickly through check bit
When setting, in the short time by the Image Acquisition in each focus detection area domain of display screen to and transfer to image algorithm to handle, accordingly
The separation that all kinds of detection algorithms can be achieved can effectively reduce the overall time of algorithm process；It is to be checked in automation equipment producing line
Display screen is during passing through appearance detection, without pausing, directly uploads algorithm process result.The present invention will greatly shorten
Time consumed by mould group terminal appearance detection, the production capacity of whole producing line is promoted indirectly, the present invention is suitable for current each factory
It is easy for installation simple in family's automation equipment production line, and can be run incessantly in appearance detection and judgement is reported to tie
Fruit is obviously improved production capacity.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the display screen ontology detection components include：
First light source carries out polishing for the front to the display screen ontology；The first light source optical path oblique fire in
The front of the display screen ontology；
Several the first linear array scanning cameras carry out Image Acquisition for the front to the display screen ontology；Several
First linear array scanning camera is arranged into the frontoparallel of a column and the column and the display screen ontology；First linear array is swept
Plane where retouching the center line and the display screen ontology of the camera lens of camera forms angle；
First mounting bracket, first mounting bracket are erected at the display screen ontology by the positive mounting bracket
Positive top, the first light source and first linear array scanning camera are installed in first mounting bracket.
Beneficial effect using above-mentioned further scheme is：The positive of display screen ontology is beaten using first light source realization
Illumination is bright；It is slanted by the optical path of first light source in the front of display screen ontology, the scuffing of display screen body surface, impression, bubble
The defects of can be inclined by direction polishing and beat bright, and display screen body surface foreign matter, dirty or particle glistening intensity can be weakened,
Several the first linear array scanning cameras are arranged side by side simultaneously, can satisfy the Image Acquisition of large scale display screen, the first linear array is swept
The acquisition of camera tilt angles degree is retouched, actual detection effect can be greatly enhanced.
Further, first light source is linear light source, the straight line parallel that first light source and the first linear array scanning camera are arranged into；The
The optical path of one light source and the positive angle of display screen ontology are 45 °；First linear array scanning camera is 3；First linear array scanning
The angle of plane is 75 ° where the center line and display screen ontology of the camera lens of camera.
Beneficial effect using above-mentioned further scheme is：Linear light source light intensity and luminous density are big, display screen body surface
The defects of scuffing, impression, bubble, can be inclined by direction polishing and beat bright, and it is different to weaken to greatest extent display screen body surface
Object, dirty or particle glistening intensity, first light source and display screen ontology in 45° angle screen surfaces to be detected formed highlight it is reflective
Area, all kinds of defects of appearance can all be captured in highlighted reflective areas by the first linear array scanning camera substantially.
Further, PCB detection components include：
Second light source, the second light source are dome light source, carry out multi-angle polishing for the front to the pcb board
Second linear array scanning camera carries out Image Acquisition for the front to the pcb board；The second linear array scanning phase
The central axis of the camera lens of machine is in the pcb board；
Second mounting bracket, second mounting bracket are being erected at the pcb board just by the positive mounting bracket
The top in face, the second light source and second linear array scanning camera are installed in second mounting bracket.
Beneficial effect using above-mentioned further scheme is：Realize that the positive polishing of pcb board is illuminated using second light source；
Dome light source can realize multi-angle polishing, the component of the protrusions such as resistance capacitance of PCB surface as detection bright field, dome light source
In by camera collection process, there is good collection effect to the protrusions such as sheet resistance capacitance sheet, sunk area, there is no yin
The interference of shadow；The size of pcb board is little simultaneously, by the central axis of the camera lens of the second linear array scanning camera in pcb board, obtains
Better image collection result is obtained, and then improves actual detection effect.
Further, COF detection components include：
Third light source, for the COF film front and UV glue carry out polishing；The third light source optical path oblique fire in
The front of COF film and UV glue；
Third linear array scanning camera, for carrying out Image Acquisition to the front of the COF film and the UV glue；The third
The central axis of the camera lens of linear array scanning camera plane where the display screen ontology；
Third mounting bracket, the third mounting bracket are being erected at the COF film just by the positive mounting bracket
The top in face, the third light source and the third linear array scanning camera are installed in the third mounting bracket.
Further, the third light source is two strip sources being oppositely arranged, and the optical path of every strip source is distinguished
It slants in the front of the COF film and the UV glue.
Beneficial effect using above-mentioned further scheme is：Two strip sources are angled with the front of COF film
Polishing is carried out, two strip sources can take into account the detection of COF and UV glue as detection bright field.
Further, reverse side detection components include：
4th light source carries out polishing for the reverse side to the display screen ontology；The optical path of 4th linear light source slants
In the reverse side of the display screen ontology；
Several the 4th linear array scanning cameras carry out Image Acquisition for the reverse side to the display screen；Described in several
4th linear array scanning camera is arranged into a column and the column are parallel with the reverse side of the display screen ontology；The 4th linear array scanning phase
Plane where the center line of the camera lens of machine and the display screen ontology forms angle；
4th mounting bracket, the 4th mounting bracket are erected at the display screen ontology by the reverse side mounting bracket
The lower section of reverse side, the 4th light source and the 4th linear array scanning camera are installed in the 4th mounting bracket.
Beneficial effect using above-mentioned further scheme is：Beating to the reverse side of display screen ontology is realized using the 4th light source
Illumination is bright；It is slanted by the optical path of the 4th light source in the front of display screen ontology, the scuffing of display screen body surface, impression, bubble
The defects of can be inclined by direction polishing and beat bright, and display screen body surface foreign matter, dirty or particle glistening intensity can be weakened,
Several the 4th linear array scanning cameras are arranged side by side simultaneously, can satisfy the Image Acquisition of large scale display screen, the 4th linear array is swept
The acquisition of camera tilt angles degree is retouched, actual detection effect can be greatly enhanced.
Further, the 4th light source is linear light source, the straight line parallel that the 4th linear light source and the 4th linear array scanning camera are arranged into；
The angle of the reverse side of the optical path and display screen ontology of 4th light source is 45 °；4th linear array scanning camera is 3；4th linear array is swept
The angle of plane is 75 ° where retouching the center line and display screen ontology of the camera lens of camera.
Beneficial effect using above-mentioned further scheme is：Linear light source light intensity and luminous density are big, display screen body surface
The defects of scuffing, impression, bubble, can be inclined by direction polishing and beat bright, and it is different to weaken to greatest extent display screen body surface
Object, dirty or particle glistening intensity, the 4th light source and display screen ontology in 45° angle screen surfaces to be detected formed highlight it is reflective
Area, all kinds of defects of appearance can all be captured in highlighted reflective areas by the 4th linear array scanning camera substantially.
On the other hand, the technical solution of present invention solution above-mentioned technical problem is as follows：A kind of display screen vision detection system,
Including display screen conveying mechanism and above-mentioned image acquisition mechanism, the display screen is slidably connected with the display screen conveying mechanism,
The display screen conveying mechanism is arranged on the Image Acquisition path of described image collecting mechanism；Wherein, the display screen is in institute
State and slided on display screen conveying mechanism and when by described image collecting mechanism, the figure collecting mechanism to the display screen into
The acquisition of row figure.
Beneficial effect using the above scheme is：The beneficial effect of the beneficial effect of this programme and above-mentioned image acquisition mechanism
It is identical, it just repeats no more again.
Further, the display screen conveying mechanism includes the first sliding rail, the second sliding rail, reverse side inhales screen device and front is detected
Delivery platform, the reverse side inhale screen device and are slidably connected with first sliding rail, the front detection delivery platform and described the
Two sliding rails are slidably connected；
The display screen is inhaled screen device with the reverse side and is detachably connected, and the display screen inhales screen device by the reverse side
The reverse side of sliding and the display screen ontology is towards the reverse side detection components on first sliding rail；Or the display screen with
The front detection delivery platform is detachably connected；The display screen is sliding described second by the front detection delivery platform
Slided on rail, and the display screen ontology just facing towards the display screen ontology detection components；
Wherein, when the reverse side of the display screen ontology passes through the reverse side detection components, the reverse side detection components are to institute
The reverse side for stating display screen ontology carries out Image Acquisition；The display screen ontology detection components are passed through in the front of the display screen ontology
When, the display screen ontology detection components, PCB detection components and COF detection components respectively to the front of the display screen ontology,
The positive and described UV glue of positive, the described COF film of pcb board carries out Image Acquisition.
Beneficial effect using above-mentioned further scheme is：The beneficial effect of this programme has with above-mentioned image acquisition mechanism
Beneficial effect is identical, just repeats no more again, while display screen conveying mechanism realizes the automatic conveying of display screen, realizes automatic production
Line improves efficiency, so that display screen to be detected is quickly through detection location point.
Detailed description of the invention
Fig. 1 is the image acquisition mechanism scheme of installation of the display screen of the invention；
Fig. 2 is image acquisition mechanism camera of the present invention and light source position relation schematic diagram；
Fig. 3 is image acquisition mechanism camera of the present invention and another angular position relative schematic diagram of light source；
Fig. 4 is reverse side detection components schematic diagram in the present invention；
Fig. 5 is that a kind of defect of display screen ontology camera under light source polishing carries out Image Acquisition schematic diagram；
Fig. 6 is that display screen ontology another kind defect camera under light source polishing carries out Image Acquisition schematic diagram；
Fig. 7 is that display screen ontology another kind defect camera under light source polishing carries out Image Acquisition schematic diagram；
Fig. 8 is that COF detection components camera under light source polishing carries out Image Acquisition schematic diagram.
In attached drawing, parts list represented by the reference numerals are as follows：
1, display screen ontology, 11, foreign matter, 2, pcb board, 31, COF film, 32, UV glue, 41, first light source, the 42, first linear array
Scanning camera, 43, highlighted reflective areas, the 44, first mounting bracket, 51, second light source, the 52, second linear array scanning camera, 53, the
Two mounting brackets, 61, third light source, 62, third linear array scanning camera, 63, third mounting bracket, the 71, the 4th light source, 72,
Four linear array scanning cameras, the 73, the 4th mounting bracket, 8, reverse side suction screen device, 9, front detection delivery platform, 100, front installation
Bracket, 110, reverse side mounting bracket, the 120, first sliding rail, the 130, second sliding rail.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment 1：
As shown in Figure 1-3, a kind of image acquisition mechanism of display screen, for the display by described image collecting mechanism
Screen carries out Image Acquisition, and the display screen includes sequentially connected display screen ontology 1, COF film 31 and pcb board 2, the COF film
31 are fixedly connected by UV glue 32 with the display screen ontology 1；Described image collecting mechanism includes：
Reverse side detection components carry out Image Acquisition for the reverse side to display screen ontology 1；
Display screen ontology detection components carry out Image Acquisition for the front to display screen ontology 1；
PCB detection components carry out Image Acquisition for the front to pcb board 2；
COF detection components, for COF film 31 front and UV glue 32 carry out Image Acquisition；
Reverse side mounting bracket 110, the reverse side detection components are mounted in the reverse side mounting bracket 110；
Positive mounting bracket 100, the display screen ontology detection components, PCB detection components and COF detection components are respectively mounted
In the positive mounting bracket 100.
The beneficial effect of the present embodiment is：Display screen ontology 1, COF film 31, UV glue 32 and the respective defect type of pcb board 2
Difference divides each region with different defect types, and the present invention is carried out respectively by different image collection assemblies
Image Acquisition, by display screen ontology detection components, PCB detection components, COF detection components and reverse side detection components respectively to aobvious
The reverse side progress Image Acquisition in the front of display screen ontology 1, the front of pcb board 2, the front of COF film 31 and display screen ontology 1, this
All kinds of defect types are divided into different zones by invention, individually acquire parallel processing, needle of the present invention by the detection components of each region
Individual Image Acquisition is used to the region of different defect types, various types of defects all can sufficiently be collected, be improved
The precision of detection, while image information can independently be uploaded preservation to processor, so that display screen to be detected by image acquisition mechanism
When quickly through detection location point, in the short time by the Image Acquisition in each focus detection area domain of display screen to and transfer to image to calculate
Method processing, the separation of all kinds of detection algorithms can be achieved accordingly, can effectively reduce the overall time of algorithm process；It is set in automation
In standby producing line, display screen to be checked is during passing through appearance detection, without pausing, directly uploads algorithm process result.This
Invention will greatly shorten the time consumed by mould group terminal appearance detection, promote the production capacity of whole producing line indirectly, the present invention
It is easy for installation simple suitable for current each producer's automation equipment production line, and can be transported incessantly in appearance detection
It goes and reports judging result, be obviously improved production capacity.
Embodiment 2：
As shown in Figure 1-3,
A kind of image acquisition mechanism of display screen is adopted for carrying out image to the display screen by described image collecting mechanism
Collection, the display screen include sequentially connected display screen ontology 1, COF film 31 and pcb board 2, and the COF film 31 passes through UV glue 32
It is fixedly connected with the display screen ontology 1；Described image collecting mechanism includes：
Reverse side detection components carry out Image Acquisition for the reverse side to display screen ontology 1；
Display screen ontology detection components carry out Image Acquisition for the front to display screen ontology 1；
PCB detection components carry out Image Acquisition for the front to pcb board 2；
COF detection components, for COF film 31 front and UV glue 32 carry out Image Acquisition；
Reverse side mounting bracket 110, the reverse side detection components are mounted in the reverse side mounting bracket 110；
Positive mounting bracket 100, the display screen ontology detection components, PCB detection components and COF detection components are respectively mounted
In the positive mounting bracket 100；
Wherein, display screen ontology detection components, PCB detection components, COF detection components constitute positive detection unit.
Display screen ontology 1, COF film 31, UV glue 32 and the respective defect type of pcb board 2 are different, will have different defect classes
Each region of type is divided, and the present invention carries out Image Acquisition by different image collection assemblies respectively, passes through display screen sheet
Body detection components, PCB detection components, COF detection components and reverse side the detection components front to display screen ontology 1, pcb board respectively
The reverse side in 2 front, the front of COF film 31 and display screen ontology 1 carries out Image Acquisition, and all kinds of defect types are divided by the present invention
Different zones individually acquire parallel processing by the detection components of each region, and the present invention is adopted for the region of different defect types
With individual Image Acquisition, various types of defects all can sufficiently be collected, improve the precision of detection, while Image Acquisition
Mechanism, which can independently upload image information, to be saved to processor, short when so that display screen to be detected is quickly through detection location point
In time by the Image Acquisition in each focus detection area domain of display screen to and transfer to image algorithm to handle, can be achieved accordingly all kinds of
The separation of detection algorithm can effectively reduce the overall time of algorithm process；In automation equipment producing line, display screen to be checked is logical
It crosses during appearance detection, without pausing, directly uploads algorithm process result.The present invention will greatly shorten outside mould group terminal
The time consumed by detection is seen, promotes the production capacity of whole producing line indirectly, the present invention is suitable for current each producer's automation and sets
It is easy for installation simple in standby production line, and judging result can be run incessantly and report in appearance detection, it is obviously improved
Production capacity.
As shown in Figure 1-3, display screen ontology detection components include：
First light source 41 carries out polishing for the front to the display screen ontology 1；The optical path of the first light source 41 is oblique
It penetrates in the front of the display screen ontology 1；
Several the first linear array scanning cameras 42 carry out Image Acquisition for the front to the display screen ontology 1；It is several
First linear array scanning camera 42 described in platform is arranged into the frontoparallel of a column and the column and the display screen ontology 1；Described first
The center line of the camera lens of linear array scanning camera 42 and the 1 place plane of display screen ontology form angle；
First mounting bracket 44, first mounting bracket 44 are erected at described aobvious by the positive mounting bracket 100
The positive top of display screen ontology 1, the first light source 41 and first linear array scanning camera 42 are installed in first peace
It fills on bracket 44.
The positive polishing of display screen ontology 1 is illuminated using the realization of first light source 41；Pass through the optical path of first light source 41
Direction polishing can be inclined by the defects of front of display screen ontology 1,1 surface scratching of display screen ontology, impression, bubble by, which slanting, beats
It is bright, and 1 Superficial Foreign Body 11 of display screen ontology, dirty or particle glistening intensity can be weakened, while several the first linear arrays are swept
It retouches camera 42 to be arranged side by side, can satisfy the Image Acquisition of large scale display screen, 42 tilt angle of the first linear array scanning camera is adopted
Collection, can greatly enhance actual detection effect.
Preferably, first light source 41 is linear light source, the straight line that first light source 41 and the first linear array scanning camera 42 are arranged into
In parallel；The optical path of first light source 41 and the positive angle β of display screen ontology 1 are 45 °；First linear array scanning camera 42 is 3
Resolution ratio is the linear array scanning camera of 16K, using 55mm fixed focus lens, to meet system dimension demand and acquisition precision need
It asks, the line of 3 the first linear array scanning cameras 42 is parallel to the display screen ontology 1 and hangs down with the direction of motion of the display screen
Directly；The center line of the camera lens of first linear array scanning camera 42 and the angle α of 1 place plane of display screen ontology are 75 °.It is automating
Equipment producing line carries display screen by positive detection components, the mirror of the first linear array scanning camera 42 by front detection delivery platform 9
The center line of head and the direction of motion angle of display screen are 75 °.
The defects of linear light source light intensity and luminous density are big, 1 surface scratching of display screen ontology, impression, bubble can the side of being inclined by
It is beaten to polishing bright, and 1 Superficial Foreign Body 11 of display screen ontology, dirty or particle glistening intensity can be weakened to greatest extent, first
Light source 41 forms highlighted reflective areas 43 in screen surfaces to be detected in 45° angle with display screen ontology 1, and all kinds of defects of appearance all may be used substantially
It is captured in highlighted reflective areas 43 by the first linear array scanning camera 42.
As shown in Figure 1-3, PCB detection components include：
Second light source 51, the second light source 51 are dome light source, carry out multi-angle for the front to the pcb board 2
Polishing
Second linear array scanning camera 52 carries out Image Acquisition for the front to the pcb board 2；Second linear array is swept
The central axis of the camera lens of camera 52 is retouched in the pcb board 2；
Second mounting bracket 53, second mounting bracket 53 are erected at the PCB by the positive mounting bracket 100
The positive top of plate 2, the second light source 51 and second linear array scanning camera 52 are installed in the second installation branch
On frame 53.
Realize that the positive polishing of pcb board 2 is illuminated using second light source 51；The size of pcb board 2 is little simultaneously, by the
The central axis of the camera lens of two linear array scanning cameras 52 obtains better image collection result, Jin Erti in the pcb board 2
High actual detection effect.
It is preferred that the second light source 51 is dome light source, multi-angle polishing, the second line are carried out to the front of the pcb board 2
Battle array scanning camera 52 uses 4K resolution ratio linear array scanning camera and 46.5mm fixed focus lens.
For dome light source as detection bright field, dome light source can realize multi-angle polishing, the protrusion such as resistance capacitance of PCB surface
Component in by camera collection process, have good collection effect to the protrusions such as sheet resistance capacitance sheet, sunk area,
There is no the interference of shade.
As shown in Figure 1-3, COF detection components include：
Third light source 61, for the COF film 31 front and UV glue 32 carry out polishing；The light of the third light source 61
Road is slanted in the front of COF film 31 and UV glue 32；
Third linear array scanning camera 62, for carrying out Image Acquisition to the front of the COF film 31 and the UV glue 32；Institute
The central axis of the camera lens of third linear array scanning camera 62 is stated in the 1 place plane of display screen ontology；
Third mounting bracket 63, the third mounting bracket 63 are erected at the COF by the positive mounting bracket 100
The positive top of film 31, the third light source 61 and the third linear array scanning camera 62 are installed in the third installation branch
On frame 63.
Preferably, third light source 61 is two strip sources being oppositely arranged, and the optical path difference of every strip source is oblique
It penetrates in the front of COF film 31 and UV glue 32, COF detection uses 4K resolution ratio linear array scanning camera and 50mm fixed focus lens,
Symmetrically arranged strip source can take into account the detection of COF and UV glue 32 as detection bright field, specifically, working as display screen to be detected
Frontoparallel in ground, for level by COF detection components, third light source 61 and third linear array scanning camera 62 are respectively positioned on display
The top of screen, since COF and UV glue 32 is located at the side of display screen, third light source 61 and third linear array scanning camera 62 also are located at
The side of first linear array scanning camera, 42 array, third light source 61 and third linear array scanning camera 62 are located at COF and UV glue 32
Top, and one of third light source 61 carries out oblique fire to COF and UV glue 32 close to the side of display screen ontology 1 from UV glue 32 and beats
Light, another side of third light source 61 from COF film 31 far from the display screen carry out oblique fire polishing to COF and UV glue 32.
As shown in Fig. 2, reverse side detection components include：
4th light source 71 carries out polishing for the reverse side to the display screen ontology 1；The optical path of 4th linear light source is oblique
It penetrates in the reverse side of the display screen ontology 1；
Several the 4th linear array scanning cameras 72 carry out Image Acquisition for the reverse side to the display screen；Several institutes
State that the 4th linear array scanning camera 72 is arranged into a column and the column are parallel with the reverse side of the display screen ontology 1；4th linear array
The center line of the camera lens of scanning camera 72 and the 1 place plane of display screen ontology form angle；
4th mounting bracket 73, the 4th mounting bracket 73 are erected at described aobvious by the reverse side mounting bracket 110
The lower section of 1 reverse side of display screen ontology, the 4th light source 71 and the 4th linear array scanning camera 72 are installed in the 4th peace
It fills on bracket 73.
The polishing of the reverse side of display screen ontology 1 is illuminated using the realization of the 4th light source 71；Pass through the optical path of the 4th light source 71
Direction polishing can be inclined by the defects of front of display screen ontology 1,1 surface scratching of display screen ontology, impression, bubble by, which slanting, beats
It is bright, and 1 Superficial Foreign Body 11 of display screen ontology, dirty or particle glistening intensity can be weakened, while several the 4th linear arrays are swept
It retouches camera 72 to be arranged side by side, can satisfy the Image Acquisition of large scale display screen, 72 tilt angle of the 4th linear array scanning camera is adopted
Collection, can greatly enhance actual detection effect.
Preferably, the 4th light source 71 is linear light source, the straight line that the 4th linear light source and the 4th linear array scanning camera 72 are arranged into
In parallel；The angle of the reverse side of the optical path and display screen ontology 1 of 4th light source 71 is 45 °；4th linear array scanning camera 72 is 3 points
Resolution is the linear array scanning camera of 16K, using 55mm fixed focus lens, to meet system dimension demand and acquisition precision need
It asks；The center line of the camera lens of 4th linear array scanning camera 72 and the angle of 1 place plane of display screen ontology are 75 °.It is automating
Equipment producing line inhales screen device 88 by reverse side and display screen is sucked by display screen by reverse side detection components, the 4th linear array scanning camera
The center line of 7272 camera lens and the direction of motion angle of display screen are 75 °.
The defects of linear light source light intensity and luminous density are big, 1 surface scratching of display screen ontology, impression, bubble can the side of being inclined by
It is beaten to polishing bright, and 1 Superficial Foreign Body 11 of display screen ontology, dirty or particle glistening intensity can be weakened to greatest extent, the 4th
Light source 71 forms highlighted reflective areas 43 in screen surfaces to be detected in 45° angle with display screen ontology 1, and all kinds of defects of appearance all may be used substantially
It is captured in highlighted reflective areas 43 by the 4th linear array scanning camera 72.
Reverse side detection components design principle is identical as display screen ontology detection components.
The full-size for the large scale display screen that the present invention is applicable in is 85 cun, and the resolution ratio of liquid crystal area detection is 0.003mm,
The resolution ratio of COF detection is 0.011mm, and the resolution ratio of PCB detection is 0.010mm, meets big component liquid crystal screen products on the market
The detection of minimum defect.
The acquisition of all types defect image of large size panel appearance detection may be implemented in the present invention, to different defect classes
Type：
As shown in figure 5, defect is display screen surface scratching, screen surfaces scratch to form the miniature pit of diffusing scattering, and light source inclines
Rake angle, which is squeezed into, is easier to be formed intensive light echo area, and camera lens is in corresponding angular acceptance to enough luminous energy, therefore fault location
Can significantly be beaten it is bright, in figure arrow be radiation direction.
As shown in fig. 6, defect is that foreign matter 11 comes across glass substrate in the following, foreign matter 11 comes across under glass substrate mostly
Face, camera lens slant setting method take into account the reception that diffuses of the defect, and arrow is radiation direction in figure.
As shown in fig. 7, defect is impression in substrate, impression is covered by glass substrate in substrate, and oblique light ray can will be equal
Even recess beat it is bright, in figure arrow be radiation direction.
As shown in figure 8, UV glue 32 is in semicolumn convex in cross-section, property is that transparent height is reflective, the low angle of sidelight
Degree squeezes into the reflection light that can effectively collect the material in the vertical direction.The surface COF is smooth, and reflective is stronger, strip light
Under the action of diffusing reflection plate, squeezing into the light field formed after COF surface reflection is dark field, weakens smooth surface reflection effect, by
This can acquire COF surface texture completely, and arrow is radiation direction in figure.
And the component of the protrusions such as resistance capacitance of PCB surface is in by camera collection process, dome light source is as detection
Bright field, dome light source can realize multi-angle polishing, have acquisition effect well to the protrusions such as sheet resistance capacitance sheet, sunk area
Fruit, there is no the interference of shade.
The beneficial effect of the present embodiment is：The present embodiment has whole beneficial effects of embodiment 1, while the present embodiment needle
The selection of camera type and light source is carried out to the defect type of different zones, improves detection accuracy.
By taking large-sized liquid crystal display as an example, image acquisition step is：
1. inhaling screen device 88 by reverse side is sucked large-sized liquid crystal display, reverse side detection components are passed through with certain speed,
In the 4th light source 7171 always in beating bright state, then trigger the 4th linear array scanning camera 7272, verso images shoot and finish
And it saves；
2. reverse side, which inhales screen device 88, places front detection delivery platform 99 for liquid crystal display, platform holds liquid crystal display
Positive detection unit is passed through with certain speed, wherein linear light source, dome light source and strip source are in bright state of beating always, and divide
Not Chu Fa COF region detection camera, liquid crystal area detection camera and PCB region detect camera, direct picture shooting finish and save；
All kinds of defect types are divided into different zones by the present invention, individually acquire parallel processing, phase by the camera of each region
That answers can be achieved the separation of all kinds of detection algorithms, can effectively reduce the overall time of algorithm process.
Embodiment 3：
As shown in Figure 1, a kind of display screen vision detection system, a kind of display screen vision detection system, including display screen are defeated
Mechanism and above-mentioned image acquisition mechanism are sent, the display screen is slidably connected with the display screen conveying mechanism, and the display screen is defeated
Mechanism is sent to be arranged on the Image Acquisition path of described image collecting mechanism；Wherein, the display screen is conveyed in the display screen
When sliding in mechanism and passing through described image collecting mechanism, the figure collecting mechanism carries out figure acquisition to the display screen.
Specifically, the display screen conveying mechanism includes the first sliding rail 120, the second sliding rail 130, reverse side suction 8 and of screen device
Front detection delivery platform 9, the reverse side inhale screen device 8 and are slidably connected with first sliding rail 120, the front detection transmission
Platform 9 is slidably connected with second sliding rail 130；
The display screen is inhaled screen device 8 with the reverse side and is detachably connected, and the display screen inhales screen dress by the reverse side
Set 8 on first sliding rail 120 reverse side of sliding and the display screen ontology 1 towards the reverse side detection components；Or it is described
Display screen is detachably connected with the front detection delivery platform 9；The display screen is existed by the front detection delivery platform 9
Slided on second sliding rail 130, and the display screen ontology 1 just facing towards the display screen ontology detection components；
Wherein, when the reverse side of the display screen ontology 1 passes through the reverse side detection components, the reverse side detection components are to institute
The reverse side for stating display screen ontology 1 carries out Image Acquisition；The display screen ontology detection group is passed through in the front of the display screen ontology 1
When part, the display screen ontology detection components, PCB detection components and COF detection components respectively to the display screen ontology 1 just
Face, pcb board 2 positive, described COF film 31 positive and described UV glue 32 carry out Image Acquisition.
The beneficial effect of the present embodiment is：The beneficial effect phase of the beneficial effect of this programme and above-mentioned image acquisition mechanism
Together, it just repeats no more again, while display screen conveying mechanism realizes the automatic conveying of display screen, realizes automatic production line, improve
Efficiency, so that display screen to be detected is quickly through detection location point.
In the description of this specification, reference term " embodiment one ", " embodiment two ", " example ", " specific example " or
The description of " some examples " etc. means that specific method, device or feature described in conjunction with this embodiment or example are contained in this hair
In at least one bright embodiment or example.In the present specification, schematic expression of the above terms are necessarily directed to
Identical embodiment or example.Moreover, specific features, method, apparatus or the feature of description can be in any one or more realities
Applying can be combined in any suitable manner in example or example.In addition, without conflicting with each other, those skilled in the art can incite somebody to action
The feature of different embodiments or examples and different embodiments or examples described in this specification is combined.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of image acquisition mechanism of display screen is adopted for carrying out image to the display screen by described image collecting mechanism
Collection, which is characterized in that the display screen includes sequentially connected display screen ontology (1), COF film (31) and pcb board (2), described
COF film (31) is fixedly connected by UV glue (32) with the display screen ontology (1)；Described image collecting mechanism includes：
Reverse side detection components carry out Image Acquisition for the reverse side to the display screen ontology (1)；
Display screen ontology detection components carry out Image Acquisition for the front to the display screen ontology (1)；
PCB detection components carry out Image Acquisition for the front to the pcb board (2)；
COF detection components, for carrying out Image Acquisition to the front of the COF film (31) and the UV glue (32)；
Reverse side mounting bracket (110), the reverse side detection components are mounted on the reverse side mounting bracket (110)；
Positive mounting bracket (100), the display screen ontology detection components, PCB detection components and COF detection components are installed in
On the front mounting bracket (100).
2. a kind of image acquisition mechanism of display screen according to claim 1, which is characterized in that the display screen ontology detection
Component includes：
First light source (41) carries out polishing for the front to the display screen ontology (1)；The optical path of the first light source (41)
It slants in the front of the display screen ontology (1)；
Several the first linear array scanning cameras (42) carry out Image Acquisition for the front to the display screen ontology (1)；It is several
First linear array scanning camera (42) described in platform is arranged into the frontoparallel of a column and the column and the display screen ontology (1)；It is described
Plane where the center line of the camera lens of first linear array scanning camera (42) and the display screen ontology (1) forms angle；
First mounting bracket (44), first mounting bracket (44) are erected on the positive mounting bracket (100) and are located at
The positive top of the display screen ontology (1), the first light source (41) and first linear array scanning camera (42) are respectively mounted
On first mounting bracket (44).
3. a kind of image acquisition mechanism of display screen according to claim 2, which is characterized in that the first light source (41) is
Linear light source, the first light source (41) are parallel to the orientation of first linear array scanning camera (42)；The first light source
(41) the positive angle of optical path and the display screen ontology (1) is 45 °；The camera lens of first linear array scanning camera (42)
Center line and the display screen ontology (1) where the angle of plane be 75 °.
4. a kind of image acquisition mechanism of display screen according to claim 1, which is characterized in that the PCB detection components packet
It includes：
Second light source (51), the second light source (51) are dome light source, are carried out for the front to the pcb board (2) polygonal
Spend polishing；
Second linear array scanning camera (52) carries out Image Acquisition for the front to the pcb board (2)；Second linear array is swept
The central axis of the camera lens of camera (52) is retouched in the pcb board (2)；
Second mounting bracket (53), second mounting bracket (53) are erected on the positive mounting bracket (100) and are located at
The positive top of the pcb board (2), the second light source (51) and second linear array scanning camera (52) are installed in institute
It states on the second mounting bracket (53).
5. a kind of image acquisition mechanism of display screen according to claim 1, which is characterized in that the COF detection components packet
It includes：
Third light source (61), for carrying out polishing to the front of the COF film (31) and UV glue (32)；The third light source (61)
Optical path oblique fire in COF film (31) front and UV glue (32)；
Third linear array scanning camera (62), for carrying out Image Acquisition to the front of the COF film (31) and the UV glue (32)；
The central axis of the camera lens of the third linear array scanning camera (62) plane where the display screen ontology (1)；
Third mounting bracket (63), the third mounting bracket (63) are erected on the positive mounting bracket (100) and are located at
The positive top of the COF film (31), the third light source (61) and the third linear array scanning camera (62) are installed in
On the third mounting bracket (63).
6. a kind of image acquisition mechanism of display screen according to claim 5, which is characterized in that the third light source (61) is
Two strip sources being oppositely arranged, and the optical path of every strip source slants front and institute in the COF film (31) respectively
State UV glue (32).
7. a kind of image acquisition mechanism of display screen according to claim 1, which is characterized in that the reverse side detection components packet
It includes：
4th light source (71) carries out polishing for the reverse side to the display screen ontology (1)；The optical path of 4th linear light source is oblique
It penetrates in the reverse side of the display screen ontology (1)；
Several the 4th linear array scanning cameras (72) carry out Image Acquisition for the reverse side to the display screen；Described in several
4th linear array scanning camera (72) is arranged into a column and the column are parallel with the reverse side of the display screen ontology (1)；4th line
Plane where the center line of the camera lens of battle array scanning camera (72) and the display screen ontology (1) forms angle；
4th mounting bracket (73), the 4th mounting bracket (73) are erected on the reverse side mounting bracket (110) and are located at
The lower section of display screen ontology (1) reverse side, the 4th light source (71) and the 4th linear array scanning camera (72) are respectively mounted
On the 4th mounting bracket (73).
8. a kind of image acquisition mechanism of display screen according to claim 7, which is characterized in that the 4th light source (71) is
Linear light source, the 4th linear light source are parallel to the orientation of the 4th linear array scanning camera (72)；4th light source
(71) angle of the reverse side of optical path and the display screen ontology (1) is 45 °；The camera lens of 4th linear array scanning camera (72)
Center line and the display screen ontology (1) where the angle of plane be 75 °.
9. a kind of image capturing system of display screen, which is characterized in that appoint including display screen conveying mechanism and such as claim 1-8
Image acquisition mechanism described in one, the display screen are slidably connected with the display screen conveying mechanism, the display screen conveying
Mechanism is arranged on the Image Acquisition path of described image collecting mechanism；Wherein, the display screen is in the display screen conveyer
When sliding on structure and passing through described image collecting mechanism, the figure collecting mechanism carries out figure acquisition to the display screen.
10. a kind of image capturing system of display screen according to claim 9, which is characterized in that the display screen conveyer
Structure includes the first sliding rail (120), the second sliding rail (130), reverse side inhales screen device (8) and delivery platform (9) are detected in front, described anti-
Face inhales screen device (8) and is slidably connected with first sliding rail (120), and front detection delivery platform (9) and described second slides
Rail (130) is slidably connected；
The display screen is inhaled screen device (8) with the reverse side and is detachably connected, and the display screen inhales screen device by the reverse side
(8) on first sliding rail (120) reverse side of sliding and the display screen ontology (1) towards the reverse side detection components；Or
The display screen is detachably connected with front detection delivery platform (9)；The display screen passes through the front detection transmission
Platform (9) slides on second sliding rail (130), and the display screen ontology (1) just facing towards the display screen ontology
Detection components；
Wherein, when the reverse side of the display screen ontology (1) passes through the reverse side detection components, the reverse side detection components are to described
The reverse side of display screen ontology (1) carries out Image Acquisition；It is detected by the display screen ontology in the front of the display screen ontology (1)
When component, the display screen ontology detection components, PCB detection components and COF detection components are respectively to the display screen ontology (1)
Front, pcb board (2) positive, described COF film (31) front and the UV glue (32) carry out Image Acquisition.
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