CN219104771U

CN219104771U - Screen detection device

Info

Publication number: CN219104771U
Application number: CN202223198372.9U
Authority: CN
Inventors: 肖侯军; 郭远忠
Original assignee: Huaxingyuanchuang Chengdu Technology Co ltd
Current assignee: Huaxingyuanchuang Chengdu Technology Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-30
Anticipated expiration: 2032-11-30

Abstract

The utility model relates to a screen detection device, which comprises a detection platform and a detection mechanism, wherein the detection mechanism comprises a first detection module, a second detection module, a first driving assembly, a module fine adjustment assembly and a light source, and the module fine adjustment assembly is used for driving the first detection module to move along the Y direction and driving the first detection module to rotate around the X direction; the first detection module comprises a camera, an upper polaroid and a second driving assembly for driving the upper polaroid to rotate, and the second detection module comprises a lower polaroid and a third driving assembly for driving the lower polaroid to rotate. According to the utility model, the second driving assembly and the third driving assembly are arranged, so that the upper polaroid and the lower polaroid can be driven to rotate around the upper and lower polaroids respectively, the included angle between the polarizing axis of the upper polaroid and the polarizing axis of the lower polaroid can be regulated, and therefore, the defects of the screen are shot through the camera, the defects of the screen are detected completely, and the quality and the detection accuracy of the screen are ensured.

Description

Screen detection device

Technical Field

The utility model relates to the technical field of screen detection, in particular to a screen detection device.

Background

Mobile technology devices, such as cell phones, VR (Virtual Reality) devices, etc., have not been able to display screens at all. In production, defect detection of the screen is an indispensable step. The traditional detection process adopts manual detection, so that the efficiency is low, and the cost is high. Compared with traditional manual detection, the automatic detection device has the advantages that the automatic detection device automatically detects a screen, the image acquisition is carried out on the screen through the camera, the image is matched with a corresponding template according to a corresponding algorithm after being transmitted into a computer, so that whether the screen has defects or not is detected, and the automatic detection device has the advantages of being high in precision, high in efficiency, fatigue-resistant, cost-saving and the like, and gradually starts to be popularized on a production line.

In the prior art, especially for the detection of LCD (Liquid CrystalDisplay ) screen, only the mode of adopting camera, light source, upper and lower polaroids is simple, wherein, LCD screen, light source, upper and lower polaroids are all fixed setting, can't detect the defect of LCD screen totally to influence the quality and the accuracy of detection of LCD screen.

Disclosure of Invention

Based on this, it is necessary to provide a screen detection device capable of realizing detection of all defects of a screen, thereby ensuring quality of the screen and accuracy of detection.

A screen detection apparatus comprising:

the device comprises a detection platform, a display module and a display module, wherein a placement area for placing a screen to be detected is arranged on the detection platform;

the detection mechanism comprises a first detection module, a second detection module, a first driving assembly, a module fine adjustment assembly and a light source, wherein the first detection module is connected to the module fine adjustment assembly, and the module fine adjustment assembly is used for driving the first detection module to move along the Y direction and driving the first detection module to rotate around the X direction; the first driving component is used for driving the module fine-tuning component to move along the Z direction so as to drive the first detection module to move along the Z direction;

the first detection module comprises a camera, an upper polaroid and a second driving assembly, and the camera is arranged above the upper polaroid along the Z direction; the upper polaroid is arranged above the detection platform; the second driving component is used for driving the upper polaroid to rotate;

the second detection module comprises a lower polaroid and a third driving assembly, and the lower polaroid is arranged below the detection platform along the Z direction; the third driving component is used for driving the lower polaroid to rotate;

the light source is arranged below the lower polaroid.

In one embodiment, the screen detection device further comprises a platform driving part, wherein the platform driving part is used for driving the detection platform to move along the X direction so as to enable the detection platform to reciprocate between an up-down material level and a detection position.

In one embodiment, the screen detection device further comprises a crimping mechanism, the crimping mechanism comprises a pressure head and a pressure head driving part, and the pressure head driving part is connected with the pressure head and used for driving the pressure head to move so as to press the screen to be detected placed on the placement area.

In one embodiment, the pressure head driving part comprises a pressure head Z-direction driving part and a pressure head X-direction driving part, and the pressure head X-direction driving part is used for driving the pressure head to move along the X direction; the Z-direction driving part of the pressure head is used for driving the pressure head to move along the Z direction.

In one embodiment, the module fine adjustment assembly includes a module Y-direction driving portion and a rotation driving portion, where the rotation driving portion is connected to the first detection module and is used to drive the first detection module to rotate around the X-direction; the module Y-direction driving part is connected with the rotary driving part and is used for driving the rotary driving part to move along the Y direction so as to drive the first detection module to move along the Y direction.

In one embodiment, the first detection module further comprises a connecting frame, wherein the connecting frame comprises a first horizontal part and a first vertical part vertically connected with the first horizontal part, and the first vertical part is connected with the camera and the module fine adjustment assembly; the first horizontal portion is connected with the second driving assembly.

In one embodiment, the second driving assembly drives the upper polarizer to rotate through the mounting bracket;

the mounting bracket comprises a first bracket, a second bracket and an upper polarized mounting bracket, wherein the first bracket and the second bracket are connected with the second driving assembly, the upper polarized mounting bracket is connected with the upper polarizer, and the first bracket is connected with the upper polarized mounting bracket through the second bracket; the upper polarized light mounting frame and the second support are mutually perpendicular.

In one embodiment, the first bracket comprises a second horizontal part connected with the second driving component and a second vertical part vertically connected with the second horizontal part; the second bracket is adjustably connected to the second vertical portion along the Z-direction position.

In one embodiment, the placement area is a hollow structure;

or, the placement area is a transparent piece.

In one embodiment, the screen detection device further comprises a loading and unloading mechanism, the loading and unloading mechanism comprises a loading and unloading grabbing part and a loading and unloading driving assembly, the loading and unloading driving assembly is used for driving the loading and unloading grabbing part to grab a screen to be detected and transport the screen to the placement area, and after the screen to be detected is detected, the screen after the screen to be detected is transported to a blanking position.

In the scheme, the first driving component is arranged, so that the distance between the first detection module and the detection platform can be adjusted, and the distances between the upper polaroid and the camera and the screen to be detected are adjusted; the module fine adjustment assembly is arranged, so that the first detection module can be driven to move along the Y direction and rotate around the X direction, the position of the first detection module relative to the detection platform in the Y direction and the angle between the first detection module and the detection platform are adjusted, and the positions of the upper polaroid and the camera and the screen to be detected in the Y direction and the angles between the upper polaroid and the camera and the screen to be detected are adjusted; through setting up second drive assembly and third drive assembly, can drive respectively and go up polaroid and lower polaroid and rotate around self, can realize adjusting the contained angle between the polarizing axis of going up the polaroid and the polarizing axis of lower polaroid to shoot the defect of screen through the camera, in order to realize all detecting out the defect of screen, thereby guarantee the quality and the accuracy of detection of screen.

Drawings

FIG. 1 is a schematic diagram of a screen detection device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a part of a detection mechanism according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a portion of a screen detection device according to an embodiment of the present utility model;

fig. 4 is a schematic view of a part of a screen detection device according to an embodiment of the utility model.

Description of the reference numerals

10. A screen detection device; 100. a detection platform; 200. a detection mechanism; 210. a first detection module; 211. a camera; 212. a polaroid is arranged on the upper surface of the substrate; 213. a second drive assembly; 220. a second detection module; 221. a lower polarizer; 222. a third drive assembly; 223. a lower polarized light mounting rack; 230. a first drive assembly; 240. a module trimming assembly; 250. a light source; 260. a fixed bracket; 270. a mounting bracket; 271. a first bracket; 272. a second bracket; 273. an upper polarizing mounting rack; 280. a mating assembly; 281. a first adjustment aperture; 282. a second adjustment aperture; 283. a locking member; 290. a connecting frame; 300. a stage driving section; 400. a crimping mechanism; 410. a pressure head; 420. a Z-direction driving part of the pressing head; 430. a ram X-direction drive section; 500. a screen.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, an embodiment of the present utility model provides a screen inspection apparatus 10, which includes an inspection platform 100 and an inspection mechanism 200, wherein a placement area for placing a screen 500 to be inspected is disposed on the inspection platform 100. The detection mechanism 200 is used for detecting the screen 500 to be tested on the placement area. Specifically, the upper surface of the inspection platform 100 is flush with the horizontal plane.

Referring to fig. 1, 2 and 3, the detecting mechanism 200 includes a first detecting module 210, a second detecting module 220, a first driving component 230, a module trimming component 240, a light source 250 and a fixing bracket 260, wherein the first driving component 230 is fixedly connected to the fixing bracket 260. The first detection module 210 is connected to the module trimming module 240. The module fine adjustment assembly 240 is configured to drive the first detection module 210 to move along the Y direction and drive the first detection module 210 to rotate around the X direction. The first driving assembly 230 is used for driving the module fine adjustment assembly 240 to move along the Z direction, so as to drive the first detection module 210 to move along the Z direction.

Specifically, the first driving assembly 230 is connected to the middle of the fixing bracket 260. The first driving assembly 230 is connected to the module trimming assembly 240 through a connection plate. More specifically, the connection plate is connected to the power output end of the first drive assembly 230. The first driving assembly 230 may employ a linear module. The first drive assembly 230 may also employ a lead screw assembly.

Referring to fig. 1, 2 and 3, the first detection module 210 is disposed above the detection platform 100. By providing the first driving assembly 230, the distance between the first detecting module 210 and the detecting platform 100 can be adjusted. By arranging the module fine adjustment component 240, the position of the first detection module 210 relative to the detection platform 100 in the Y direction can be adjusted, and the angle between the first detection module 210 and the detection platform 100 can be adjusted by driving the first detection module 210 to rotate around the X direction.

Referring to fig. 1, 2 and 3, the first detection module 210 includes a camera 211, an upper polarizer 212 and a second driving assembly 213, and the camera 211 is disposed above the upper polarizer 212 along the Z direction. The upper polarizer 212 is disposed above the inspection platform 100. The second driving assembly 213 is used for driving the upper polarizer 212 to rotate. Specifically, the camera 211 may photograph the screen 500 to be tested. The upper polarizer 212 is disposed directly above the inspection platform 100.

Referring to fig. 1, 3 and 4, the second detection module 220 includes a lower polarizer 221 and a third driving component 222, and the lower polarizer 221 is disposed below the detection platform 100. The third driving assembly 222 is used for driving the lower polarizer 221 to rotate. The second detection module 220 further includes a lower polarizing mounting frame 223, the lower polarizer 221 is mounted on the lower polarizing mounting frame 223, and the third driving assembly 222 drives the lower polarizing mounting frame 223 to rotate, so as to drive the lower polarizer 221 to rotate. The light source 250 is disposed under the lower polarizer 221. Specifically, the lower polarizer 221 is disposed directly under the inspection stage 100.

The inspection of the screen 500 uses the principle of intersection of the upper polarizer 212 with the lower polarizer 221. It is to be understood that: when the polarized light of the light source 250 passing through the lower polarizer 221 passes through the screen 500 to be measured, the polarized light is deflected at a certain angle due to the influence of the orientation of the screen 500 to be measured, the polarized light will not be completely orthogonal when reaching the upper polarizer 212, and a part of light with the same polarized direction as the upper polarizer 212 passes through the upper polarizer 212 to generate a light-shade contrast, thereby generating a display picture.

Through setting up second drive assembly 213 and third drive assembly 222, can drive respectively and go up polaroid 212 and lower polaroid 221 and rotate around oneself, can realize adjusting the contained angle between the polarizing axis of last polaroid 212 and the polarizing axis of lower polaroid 221 to shoot the defect of screen 500 through camera 211, in order to realize all detecting out the defect of screen 500, thereby guarantee the quality and the accuracy of detection of screen 500.

Referring to fig. 1 and 2, according to some embodiments of the present application, optionally, the screen detection device 10 further includes a platform driving part 300, where the platform driving part 300 is used to drive the detection platform 100 to move along the X direction, so that the detection platform 100 reciprocates between the up-down material level and the detection position. Specifically, the inspection stage 100 is connected to the power output end of the stage driving part 300. The stage driving part 300 may employ a linear module. The stage driving unit 300 may employ a screw assembly.

It is to be understood that: when the inspection platform 100 is located at the inspection position, the inspection platform 100 is located directly under the upper polarizer 212 and directly over the lower polarizer 221. When the inspection platform 100 is located at the upper and lower positions, there is a space between the inspection platform 100 and the upper polarizer 212 and the lower polarizer 221 in the X direction. In the Z direction, the inspection stage 100 is parallel to the upper polarizer 212 and the lower polarizer 221. When the detection platform 100 is located at the loading and unloading level, no mechanism is arranged above and below the detection platform 100, so that loading and unloading can be facilitated.

When feeding is required, the platform driving part 300 drives the detection platform 100 to move along the X direction so as to move the detection platform 100 to the upper and lower material levels. After the loading is completed, the platform driving part 300 drives the detection platform 100 to move from the loading position to the unloading position, so as to detect the screen 500 to be detected. After the detection is completed, the platform driving part 300 drives the detection platform 100 to move to the upper and lower material levels from the detection displacement, so that the screen 500 after the detection is completed is subjected to blanking.

Referring to fig. 1, 3 and 4, according to some embodiments of the present application, optionally, the screen inspection device 10 further includes a press-connection mechanism 400, where the press-connection mechanism 400 includes a press head 410 and a press head driving portion, and the press head driving portion is connected to the press head 410 and is used for driving the press head 410 to move so as to press the screen 500 to be inspected on the placement area. Specifically, the crimping mechanism 400 is located on one side of the inspection platform 100. A protector for placing the screen 500 to be crushed may be provided at the ram 410. Illustratively, the protector is a sponge.

The ram driving part includes a ram Z-direction driving part 420 and a ram X-direction driving part 430, and the ram X-direction driving part 430 is used for driving the ram 410 to move along the X-direction. The ram Z-direction driving part 420 is used to drive the ram 410 to move along the Z-direction. By providing the indenter X-direction driving part 430, the distance between the indenter 410 and the screen 500 to be tested on the placement area in the X-direction can be adjusted to adjust the indenter 410 to a set position. By providing the pressing head Z-direction driving part 420, the distance between the pressing head 410 and the screen 500 to be tested on the placement area in the Z-direction can be adjusted to press the screen 500 to be tested. Specifically, the ram Z-direction driving unit 420 and the ram X-direction driving unit 430 may be linear modules. The ram Z-direction driving unit 420 and the ram X-direction driving unit 430 may be screw assemblies.

Referring to fig. 1, 2 and 3, according to some embodiments of the present application, optionally, the module fine adjustment assembly 240 includes a module Y-direction driving portion and a rotation driving portion, where the rotation driving portion is connected to the first detection module 210 and is used for driving the first detection module 210 to rotate around the X-direction. The module Y-direction driving portion is connected to the rotation driving portion, and is configured to drive the rotation driving portion to move along the Y-direction, so as to drive the first detection module 210 to move along the Y-direction. Specifically, the module Y-direction driving part is fixedly connected to the connecting plate. The rotary driving part is connected with the power output end of the module Y-direction driving part. The module Y-direction driving unit may employ a linear module. The module Y-direction driving unit may employ a screw assembly.

The first detection module 210 further includes a connection frame 290, where the connection frame 290 includes a first horizontal portion and a first vertical portion vertically connected to the first horizontal portion. The first vertical portion is connected to the camera 211 and the module trim component 240. The first horizontal portion is connected to the second driving assembly 213. Specifically, the first vertical portion is connected to the camera 211 and the rotation driving portion.

It is to be understood that: when the rotation driving part is operated, the connecting frame 290 is driven to rotate around the X direction, and the camera 211 and the second driving component 213 are driven to rotate around the X direction at the same time. When the second driving component 213 rotates around the X direction, the upper polarizer 212 is driven to rotate around the X direction. As can be seen from the above, when the rotation driving portion is operated, the camera 211 and the upper polarizer 212 can be simultaneously driven to rotate around the X direction, the included angle between the camera 211 and the upper polarizer 212 and the detection platform 100 can be adjusted, and the relative position between the camera 211 and the upper polarizer 212 can be effectively ensured to be unchanged.

Referring to fig. 1 and 2, according to some embodiments of the present application, optionally, the second driving assembly 213 rotates the upper polarizer 212 through the mounting bracket 270. The mounting bracket 270 includes a first bracket 271 connected with the second driving assembly 213, a second bracket 272, and an upper polarization mounting bracket 273 connected with the upper polarizer 212, and the first bracket 271 is connected with the upper polarization mounting bracket 273 through the second bracket 272. The upper polarization mounting frame 273 is disposed perpendicular to the second bracket 272.

The first bracket 271 includes a second horizontal portion connected with the second driving assembly 213 and a second vertical portion vertically connected with the second horizontal portion. The second bracket 272 is connected to the second vertical portion with a position adjustable in the Z direction. Specifically, the second bracket 272 is adjustably coupled to the second upright portion by a mating assembly 280.

The mating assembly 280 includes a first adjusting hole 281 extending along the Z direction, a second adjusting hole 282 extending along the Z direction, and a locking member 283, where the first adjusting hole 281 is disposed at the second vertical portion; the second adjusting hole 282 is disposed on the second bracket 272 and cooperates with the first adjusting hole 281; the locking member 283 is disposed through the second adjusting hole 282 and the first adjusting hole 281, and is used for locking the second bracket 272 with the second vertical portion. By arranging the matching component 280, the position of the second bracket 272 relative to the first bracket 271 in the Z direction can be adjusted, so that the distance between the upper polarizer 212 and the camera 211 can be adjusted.

Referring to fig. 1, 2 and 3, according to some embodiments of the present application, optionally, in one embodiment, the placement area is a hollow structure, so as to ensure that light emitted by the light source 250 passes through. A positioning piece for positioning and supporting the screen 500 to be tested is arranged in the placement area. Illustratively, the positioning member is a positioning protrusion formed by protruding an inner sidewall of the placement region toward an inside of the placement region. The screen 500 to be tested may be placed on the positioning protrusion.

In yet another embodiment, the placement area is a transparent member to ensure the light emitted from the light source 250 passes through.

Referring to fig. 1 and 2, according to some embodiments of the present application, optionally, the screen inspection apparatus 10 further includes a loading and unloading mechanism, the loading and unloading mechanism includes a loading and unloading grabbing portion and a loading and unloading driving assembly, the loading and unloading driving assembly is used for driving the loading and unloading grabbing portion to grab the screen 500 to be inspected and transport the screen 500 to be inspected to the placement area, and after the inspection of the screen 500 to be inspected is completed, the inspected screen 500 is transported to the unloading level. Illustratively, the loading and unloading mechanism employs a manipulator. In other possible embodiments, manual feeding may also be employed.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A screen inspection device, comprising:

the light source is arranged below the lower polaroid.

2. The screen detecting apparatus according to claim 1, further comprising a stage driving section for driving the detecting stage to move in the X direction so as to reciprocate the detecting stage between an up-down level and a detecting level.

3. The screen inspection device of claim 1, further comprising a crimping mechanism comprising a ram and a ram drive, the ram drive being coupled to the ram for driving movement of the ram to compress a screen to be inspected placed on the placement area.

4. The screen detection device according to claim 3, wherein the pressure head driving part comprises a pressure head Z-direction driving part and a pressure head X-direction driving part, and the pressure head X-direction driving part is used for driving the pressure head to move along the X direction; the Z-direction driving part of the pressure head is used for driving the pressure head to move along the Z direction.

5. The screen detection device according to claim 1, wherein the module fine adjustment assembly comprises a module Y direction driving part and a rotation driving part, the rotation driving part is connected with the first detection module and is used for driving the first detection module to rotate around the X direction; the module Y-direction driving part is connected with the rotary driving part and is used for driving the rotary driving part to move along the Y direction so as to drive the first detection module to move along the Y direction.

6. The screen inspection device of claim 5, wherein the first inspection module further comprises a connection frame, the connection frame comprising a first horizontal portion and a first vertical portion vertically connected to the first horizontal portion, the first vertical portion being connected to the camera and the module trim assembly; the first horizontal portion is connected with the second driving assembly.

7. The screen inspection device of claim 1, wherein the second driving assembly rotates the upper polarizer through a mounting bracket;

8. The screen inspection device of claim 7, wherein the first bracket includes a second horizontal portion connected to the second driving assembly and a second vertical portion vertically connected to the second horizontal portion; the second bracket is adjustably connected to the second vertical portion along the Z-direction position.

9. The screen detection device according to claim 1, wherein the placement area is a hollowed-out structure;

or, the placement area is a transparent piece.

10. The screen detection device according to claim 1, further comprising a loading and unloading mechanism, wherein the loading and unloading mechanism comprises a loading and unloading grabbing part and a loading and unloading driving assembly, the loading and unloading driving assembly is used for driving the loading and unloading grabbing part to grab a screen to be detected and transport the screen to the placement area, and after detection of the screen to be detected is completed, the screen after detection is transported to a unloading position.