CN215179775U - Detection apparatus for screen internal defect - Google Patents
Detection apparatus for screen internal defect Download PDFInfo
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- CN215179775U CN215179775U CN202121184236.7U CN202121184236U CN215179775U CN 215179775 U CN215179775 U CN 215179775U CN 202121184236 U CN202121184236 U CN 202121184236U CN 215179775 U CN215179775 U CN 215179775U
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Abstract
The utility model discloses a detection apparatus for screen internal defect, including rigging machine, hot press and OCT detector, the OCT detector includes OCT scanning probe, OCT light path collection moulding piece and system control module, OCT scanning probe includes first scanning probe and second scanning probe, first scanning probe sets up on the rigging machine and fixed with the rigging machine, second scanning probe sets up on the hot press and fixed with the hot press, first scanning probe and second scanning probe are connected with OCT light path collection moulding piece's input through first optic fibre and second optic fibre respectively, OCT light path collection moulding piece's output and system control module are connected. The device performs real-time imaging on the bubble defect generated in the screen attaching process through the OCT detector, thereby improving the universality, accuracy and precision of screen defect detection, having high detection efficiency, and having the advantages of non-contact, nondestructive, high resolution and real-time detection.
Description
Technical Field
The utility model relates to a screen detection area, concretely relates to detection device of screen internal defect.
Background
The mobile phone screen is a multi-layer structure and mainly comprises a glass cover plate, a touch screen, an optical transparent adhesive and a liquid crystal display, wherein the optical transparent adhesive is a key adhesive for the touch screen and the liquid crystal display and plays an important role in production and functions of the mobile phone screen. At present, screens produced in industry mainly adopt a semi-automatic laminating mode, and due to the influences of factors such as mechanism action of a laminating machine, air discharge state of a hot press, gaps of Optical Clear Adhesive (OCA) solid laminating materials, too high operation speed of a machine table and the like, bubbles are generated in the laminating process. In the OCA optical cement laminating process, bubbles are mainly generated in two stages, wherein the first stage is the soft and hard laminating process of the OCA optical cement and a Touch Panel (TP); the second stage is a hard-to-hard bonding process of the touch screen bonded with the OCA optical adhesive and a Liquid Crystal Display (LCD).
At present, most of screen defect detection on a production line still remains in manual visual detection. The detection personnel use tools such as a magnifying glass, a special light source and a microscope on a production line, and the screen products are inspected one by means of naked eyes and subjective experience. The manual visual detection has low efficiency, high cost, strong subjectivity, low accuracy and limited detection dimensionality. A small number of machine vision detection is applied, but the existing machine vision detection depends on defect feature extraction, can only detect specific defect types, cannot realize high-efficiency and high-precision detection on different types of defects, and has the advantages of poor universality, high omission factor and limited detection dimensionality.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the detection efficiency low, the rate of accuracy is low, detect the limited problem of dimension that screen defect detected among the prior art to a detection device of screen internal defect is provided.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the embodiment of the utility model provides a detection apparatus for screen internal defect, a serial communication port, include: the OCT probe system comprises a laminating machine, a hot press and an OCT detector, wherein the OCT detector comprises an OCT scanning probe, an OCT optical path integration module and a system control module,
the OCT scanning probe comprises a first scanning probe and a second scanning probe, the first scanning probe is arranged on the laminating machine and fixed with the laminating machine, the second scanning probe is arranged on the hot press and fixed with the hot press, the first scanning probe and the second scanning probe are respectively connected with the input end of the OCT light path integration module through a first optical fiber and a second optical fiber, and the output end of the OCT light path integration module is connected with the system control module.
Optionally, the laminating machine includes flip lid and base, it is articulated between flip lid and the base, first fixed slot has been seted up to the base, first scanning probe sets up in first fixed slot and fixed with the base.
Optionally, a first through hole is formed between the base and the first fixing groove, one end of the first optical fiber is connected with the first scanning probe, and the other end of the first optical fiber passes through the first through hole and is connected with the OCT optical path integration module.
Optionally, the laminating machine further includes a first clamping groove and a second clamping groove, wherein the first clamping groove is disposed above the base and corresponds to the first fixing groove, and the second clamping groove is disposed on the side wall of the turnover cover corresponding to the base and corresponds to the first clamping groove.
Optionally, the hot press includes fixed establishment and lower fixed establishment and hydraulic telescoping rod, go up fixed establishment and lower fixed establishment fixed connection, it is provided with the fly leaf to slide in the fixed establishment, the fly leaf separates fixed establishment for activity chamber and laminating chamber, hydraulic telescoping rod sets up in activity chamber and stiff end and last fixed establishment's roof fixed connection, expansion end and fly leaf fixed connection, the second fixed slot has been seted up on the fly leaf, second scanning probe sets up in the second fixed slot and is fixed with the fly leaf, it has seted up and has placed the mouth to go up fixed establishment.
Optionally, a second through hole is formed in the top of the upper fixing mechanism, one end of the second optical fiber is connected with the second scanning probe, and the other end of the second optical fiber penetrates through the second through hole to be connected with the OCT optical path integration module.
Optionally, the hot press further includes a third clamping groove and a fourth clamping groove, wherein the third clamping groove is disposed at the top of the lower fixing mechanism, and the fourth clamping groove is disposed at the bottom of the movable plate and corresponds to the third clamping groove.
Optionally, a sealing door is arranged at the position, opposite to the placing opening, of the outer side of the upper fixing mechanism.
Optionally, the device for detecting the internal defects of the screen further comprises a vacuum pump, and the vacuum pump is communicated with the fitting cavity through a pipeline.
The utility model discloses technical scheme has following advantage:
the utility model provides a pair of detection apparatus for screen internal defect, including rigging machine, hot press and OCT detector, the OCT detector includes OCT scanning probe, OCT light path collection moulding piece and system control module, wherein, OCT scanning probe includes first scanning probe and second scanning probe, first scanning probe sets up on the rigging machine and is fixed with the rigging machine, second scanning probe sets up on the hot press and fixed with the hot press, first scanning probe and second scanning probe are connected with OCT light path collection moulding piece's input through first optic fibre and second optic fibre respectively, OCT light path collection moulding piece's output is connected with system control module. The device can perform real-time imaging on bubble defects of different types, different sizes and different depths generated in the screen laminating process through the laminating machine, the hot press and the OCT detector, thereby improving the universality, accuracy and precision of screen defect detection, having high detection efficiency and having the advantages of non-contact, nondestructive, high-resolution and real-time detection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a device for detecting defects inside a screen according to the present invention;
fig. 2 is a schematic structural view of a laminating machine according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure view of a hot press provided by an embodiment of the present invention;
fig. 4 is a composition diagram of an OCT detecting apparatus according to an embodiment of the present invention.
In the figure: the optical fiber scanning system comprises a laminating machine 1, a 2-hot press, a 3-OCT optical path integrated module, a 4-system control module, a 5-first scanning probe, a 6-second scanning probe, a 7-display module, a 8-first optical fiber, a 9-second optical fiber, a 10-turnover cover, a 11-base, a 12-first clamping groove, a 13-second clamping groove, a 14-upper fixing mechanism, a 15-lower fixing mechanism, a 16-hydraulic telescopic rod, a 17-movable plate, an 18-movable cavity, a 19-laminating cavity, a 20-third clamping groove, a 21-fourth clamping groove, a 22-vacuum pump and a 23-sealed door.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The embodiment of the utility model provides a detection apparatus for screen internal defect is applied to the occasion that needs detected screen internal defect, and as shown in figure 1, this detection apparatus for screen internal defect includes: a laminating machine 1, a hot press 2 and an OCT detector, wherein the OCT detector comprises an OCT scanning probe, an OCT optical path integrated module 3 and a system control module 4,
OCT scanning probe includes first scanning probe 5 and second scanning probe 6, first scanning probe 5 sets up on rigging machine 1 and fixed with rigging machine 1, second scanning probe 6 sets up on hot press 2 and fixed with hot press 2, first scanning probe 5 and second scanning probe 6 are connected with OCT light path collection moulding piece 3's input through first optic fibre 8 and second optic fibre 9 respectively, OCT light path collection moulding piece 3's output is connected with system control module 4.
The utility model provides a pair of detection device of screen internal defect through rigging machine 1, hot press 2 and OCT detector, can carry out real-time formation of image to the different grade type that the screen laminating in-process produced, not unidimensional, the bubble defect of different depths to improve commonality, rate of accuracy and the precision that screen defect detected, detection efficiency is high, has non-contact nature, harmless, high resolution, real-time detection advantage.
Specifically, the mobile phone screen is a multi-layer structure, and mainly comprises a glass cover plate, a Touch Panel (TP), an Optical Clear Adhesive (OCA) and a Liquid Crystal Display (LCD), wherein the Optical Clear Adhesive is a key Adhesive for the Touch Panel and the LCD. At present, the screen in industrial production mainly adopts a semi-automatic laminating mode, and due to the influences of factors such as mechanical mechanism action of a laminating machine 1, air discharge state of a hot press machine 2, gaps of OCA solid laminating materials, too high operation speed of a machine table and the like, bubbles are generated in the laminating process. In the OCA optical cement laminating process, bubbles are mainly generated in two stages, wherein the first stage is a soft-hard laminating process of OCA optical cement and a touch screen through a laminating machine 1; the second stage is a hard-to-hard attachment process of the liquid crystal display and the touch screen to which the OCA optical adhesive has been attached by the hot press 2.
The Optical Coherence Tomography (OCT) technique uses the basic principle of weak coherent Optical interferometer to detect back-reflected or several scattered signals of incident weak coherent light at different depth levels, and scans to obtain two-dimensional or three-dimensional structural images. OCT scanning probe has been increased in rigging machine 1 and the hot press 2 through in the bubble generation stage, scans the screen, and the signal that will gather passes through optical fiber transmission to optical path collection moulding piece, and optical path collection moulding piece transmits scanning result to system control module 4, and scanning, collection, transmission here are the application to prior art, do not give unnecessary details here.
In an embodiment, as shown in fig. 2, the laminator 1 includes a flip cover 10 and a base 11, the flip cover 10 is hinged to the base 11, the base 11 defines a first fixing groove, and the first scanning probe 5 is disposed in the first fixing groove and fixed to the base 11.
Specifically, the area above the first fixing groove is placed in OCA optical cement, the touch screen is placed on the binding surface of the turnover cover 10 and the base 11 and corresponds to the position of the OCA optical cement, after the turnover cover 10 is turned over, the touch screen and the OCA optical cement are scanned by the OCT detector, image information in the binding process is detected, whether bubble defects exist or not is judged, real-time imaging is performed on the bubble defects, the process is the application of the existing Optical Coherence Tomography (OCT) technology at the position, repeated description is not needed here, the first scanning probe 5 can also be arranged on the turnover cover 10, and the touch screen and the OCA optical cement can only be fixed on the base 11 at the position where scanning can be performed in the binding process.
In an embodiment, a first through hole is formed between the base 11 and the first fixing groove, one end of the first optical fiber 8 is connected to the first scanning probe 5, and the other end passes through the first through hole to be connected to the OCT optical path integrating module 3.
Specifically, through setting up the first through-hole that is used for making 8 optic fibres of first optic fibre pass, prevent that optic fibre from buckling because of the installation, influencing life.
In an embodiment, the laminating machine 1 further includes a first clamping groove 12 and a second clamping groove 13, wherein the first clamping groove 12 is disposed above the base 11 and corresponds to the first fixing groove, and the second clamping groove 13 is disposed on the side wall of the flip cover 10 corresponding to the base 11 and corresponds to the first clamping groove 12.
Specifically, first draw-in groove 12 is used for placing OCA optical cement, and second draw-in groove 13 is used for placing the touch-sensitive screen for inject the position of touch-sensitive screen and OCA optical cement, make touch-sensitive screen and OCA optical cement complete the alignment, improve laminating efficiency.
In a specific embodiment, as shown in fig. 3, the hot press 2 includes an upper fixing mechanism 14, a lower fixing mechanism 15 and a hydraulic telescopic rod 16, the upper fixing mechanism 14 is fixedly connected with the lower fixing mechanism 15, a movable plate 17 is slidably disposed in the upper fixing mechanism 14, the movable plate 17 divides the upper fixing mechanism 14 into a movable cavity 18 and a fitting cavity 19, the hydraulic telescopic rod 16 is disposed in the movable cavity 18, the fixed end of the hydraulic telescopic rod is fixedly connected with a top plate of the upper fixing mechanism 14, the movable end of the hydraulic telescopic rod is fixedly connected with the movable plate 17, a second fixing groove is disposed on the movable plate 17, the second scanning probe 6 is disposed in the second fixing groove and fixed with the movable plate 17, and the upper fixing mechanism 14 is provided with a placement opening.
Specifically, the liquid crystal display is placed in the lower fixing mechanism 15, the touch screen to which the OCA optical cement is attached is placed on a surface of the movable plate 17 corresponding to the lower fixing mechanism 15, and the movable plate 17 is controlled to move downward by the hydraulic telescopic rod 16, so that the touch screen to which the OCA optical cement is attached to the liquid crystal display, and simultaneously, the pressure defoaming is performed. Scanning the liquid crystal display and the touch screen which is bonded with the OCA optical cement by an OCT detector, detecting image information in the bonding process, judging whether bubble defects exist or not and imaging the bubble defects in real time, wherein the process is an application of the existing Optical Coherence Tomography (OCT) technology and is not repeated herein; the second scanning probe 6 may also be disposed on the lower fixing mechanism 15, which is not set here to be only fixed on the movable plate 17, as long as the position for scanning the bonding process between the lcd and the touch screen to which the OCA optical cement has been bonded can be achieved.
In an embodiment, as shown in fig. 4, the OCT apparatus further includes a display module 7, an output end of the system control module 4 is connected to the display module 7, the system control module 4 sends the defect determination result and the image information to the display module 7, and the display module 7 displays the image information of the detected defect. Specifically, the display process is convenient for workers to judge and analyze the size, the shape and the position of the defect according to the image information and analyze the reason of the defect, so that the parameters of the laminating machine 1 are adjusted in time, the optimal parameters of the laminating machine 1 are selected, the generation rate of the bubble defect is controlled, the laminating defect is solved in time, the generation rate of the bubble is reduced, and the display module 7 can be a display.
In an embodiment, a second through hole is formed at the top of the upper fixing mechanism 14, one end of the second optical fiber 9 is connected to the second scanning probe 6, and the other end passes through the second through hole to be connected to the OCT optical path integration module 3.
Specifically, through setting up the second through-hole that is used for making second optic fibre 9 pass, prevent that the optic fibre from buckling because of the installation, improve the life of device, simultaneously, through the second through-hole installation second scanning probe 6 that makes second optic fibre 9 pass, prevented that the optic fibre from the possibility that the installation might influence the binding face elsewhere.
In an embodiment, the hot press 2 further includes a third engaging groove 20 and a fourth engaging groove 21, wherein the third engaging groove 20 is disposed at the top of the lower fixing mechanism 15, and the fourth engaging groove 21 is disposed at the bottom of the movable plate 17 and corresponds to the third engaging groove 20.
Specifically, the third card slot 20 is used for placing the liquid crystal display, and the second card slot 13 is used for placing the touch screen, and is used for limiting the positions of the liquid crystal display and the touch screen, so that the liquid crystal display and the touch screen are aligned, and the attaching efficiency is improved.
In an embodiment, a sealing door 23 is disposed at the position opposite to the placing opening on the outer side of the upper fixing mechanism 14.
Specifically, airtight door 23 includes left side door and right side door, left side door and right side door slide to set up in last 14 outsides of fixed establishment, be provided with the sealing strip between airtight door 23 and the 14 lateral walls of last fixed establishment, when airtight door 23 is in the closure state, can be complete seal placing the mouth, the accessible is placed a mouthful and is placed LCD and touch-sensitive screen during the open mode, can prevent through setting up airtight door 23 that the dust from getting into laminating chamber 19, play airtight effect when adopting vacuum pump 22 to laminate chamber 19 evacuation simultaneously.
In a specific embodiment, the device for detecting defects inside the screen further comprises a vacuum pump 22, and the vacuum pump 22 is communicated with the attaching cavity 19 through a pipeline.
Specifically, the vacuum pump 22 is used for vacuumizing the laminating cavity 19, so that the possibility of generating bubbles in the laminating process is reduced, and the efficiency is improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (9)
1. A device for detecting defects inside a screen, comprising: the OCT probe system comprises a laminating machine, a hot press and an OCT detector, wherein the OCT detector comprises an OCT scanning probe, an OCT optical path integration module and a system control module,
the OCT scanning probe comprises a first scanning probe and a second scanning probe, the first scanning probe is arranged on the laminating machine and fixed with the laminating machine, the second scanning probe is arranged on the hot press and fixed with the hot press, the first scanning probe and the second scanning probe are respectively connected with the input end of the OCT light path integration module through a first optical fiber and a second optical fiber, and the output end of the OCT light path integration module is connected with the system control module.
2. The apparatus of claim 1, wherein the laminating machine comprises a flip cover and a base, the flip cover is hinged to the base, the base defines a first fixing groove, and the first scanning probe is disposed in the first fixing groove and fixed to the base.
3. The apparatus of claim 2, wherein a first through hole is formed between the base and the first fixing groove, one end of the first optical fiber is connected to the first scanning probe, and the other end of the first optical fiber passes through the first through hole and is connected to the OCT optical path integration module.
4. The apparatus of claim 2, wherein the laminating machine further comprises a first engaging groove and a second engaging groove, the first engaging groove is disposed above the base and corresponds to the first fixing groove, and the second engaging groove is disposed on the sidewall of the flip cover corresponding to the base and corresponds to the first engaging groove.
5. The device for detecting the internal defects of the screen according to claim 1, wherein the hot press comprises an upper fixing mechanism, a lower fixing mechanism and a hydraulic telescopic rod, the upper fixing mechanism and the lower fixing mechanism are fixedly connected, a movable plate is slidably arranged in the upper fixing mechanism, the movable plate divides the upper fixing mechanism into a movable cavity and a fitting cavity, the hydraulic telescopic rod is arranged in the movable cavity, the fixed end of the hydraulic telescopic rod is fixedly connected with a top plate of the upper fixing mechanism, the movable end of the hydraulic telescopic rod is fixedly connected with the movable plate, a second fixing groove is formed in the movable plate, the second scanning probe is arranged in the second fixing groove and fixed with the movable plate, and a placing opening is formed in the upper fixing mechanism.
6. The apparatus of claim 5, wherein a second through hole is formed at the top of the upper fixing mechanism, one end of the second optical fiber is connected to the second scanning probe, and the other end of the second optical fiber passes through the second through hole and is connected to the OCT optical path integration module.
7. The device of claim 5, wherein the hot press further comprises a third engaging groove and a fourth engaging groove, wherein the third engaging groove is disposed on the top of the lower fixing mechanism, and the fourth engaging groove is disposed on the bottom of the movable plate and corresponds to the third engaging groove.
8. The device for detecting the internal defects of the screen according to claim 5, wherein a sealing door is arranged at the position, opposite to the placing port, outside the upper fixing mechanism.
9. The device for detecting the internal defects of the screen of claim 8, further comprising a vacuum pump, wherein the vacuum pump is communicated with the attaching cavity through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121184236.7U CN215179775U (en) | 2021-05-28 | 2021-05-28 | Detection apparatus for screen internal defect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121184236.7U CN215179775U (en) | 2021-05-28 | 2021-05-28 | Detection apparatus for screen internal defect |
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| CN215179775U true CN215179775U (en) | 2021-12-14 |
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| CN202121184236.7U Active CN215179775U (en) | 2021-05-28 | 2021-05-28 | Detection apparatus for screen internal defect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115400920A (en) * | 2022-10-10 | 2022-11-29 | 武汉贝宁科技有限公司 | Dispensing and film-coating equipment and method adopting UV lamp |
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2021
- 2021-05-28 CN CN202121184236.7U patent/CN215179775U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115400920A (en) * | 2022-10-10 | 2022-11-29 | 武汉贝宁科技有限公司 | Dispensing and film-coating equipment and method adopting UV lamp |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Hongyi Zhizao Technology Co.,Ltd. Assignor: SHENZHEN University Contract record no.: X2023980032367 Denomination of utility model: A device for detecting screen internal defects Granted publication date: 20211214 License type: Common License Record date: 20230220 |
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| EE01 | Entry into force of recordation of patent licensing contract |