CN216247722U

CN216247722U - Screen layering defect detection device

Info

Publication number: CN216247722U
Application number: CN202122558108.0U
Authority: CN
Inventors: 王馨莹; 陶平; 田永军; 李伟; 孟鹏飞; 李立锋; 刘欣; 林涛
Original assignee: Beijing Zhaowei Intelligent Equipment Co ltd
Current assignee: Beijing Zhaowei Intelligent Equipment Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-04-08
Anticipated expiration: 2031-10-21

Abstract

The utility model relates to a screen layering defect detection device, and belongs to the technical field of screen detection. This screen layering defect detection device includes: the workstation, the fixed portal frame that is equipped with on the workstation, be provided with the X axle slip table on the portal frame, it is equipped with wide field of vision detection mechanism and layering detection mechanism to slide on the X axle slip table, be equipped with on the X axle slip table and be used for driving wide field of vision detection mechanism and the gliding X axle drive assembly of layering detection mechanism along X axle slip table length direction, be provided with Y axle slip table on the workstation, it is equipped with the mechanism that bears that is used for moving the screen to wide field of vision detection mechanism and layering detection mechanism detection area to slide on the Y axle slip table. Has the advantages that: the whole image of the screen is shot through the wide-field detection mechanism, the coordinate position of the object defect on the screen is obtained, the screen is moved to the layered detection mechanism through the bearing mechanism, the layered position is given according to the definition of the outline of the foreign object defect, the defect adjustment image is accurately extracted, and the size of the defect adjustment image is analyzed.

Description

Screen layering defect detection device

Technical Field

The utility model belongs to the technical field of screen detection, and particularly relates to a screen layering defect detection device.

Background

At present, LCD display products are widely applied to various industries in the display field, and have a considerable share in the market, and panel manufacturers still keep high capacity. The LCD display module generally comprises a plurality of layers, from top to bottom: a CG layer (cover glass) having a thickness of about 300 um; an OCA layer (optical cement) with a thickness of about 200 um; upper POL layer (upper polarizing film), about 70 um; CF layer (thin film liquid crystal), about 150 um; lower POL layer (lower polarizing film), about 70 um; backlight prism layer, about 250 um. The products provided by different manufacturers and suppliers vary slightly in thickness of the layers, roughly within the ranges given above. In the process of the LCD module attaching process, the problem that foreign matters fall into an interlayer exists, and the defect of attaching the foreign matters is overcome. Such defects are typically detected by an appearance vision inspection system, i.e., a defect foreign object is illuminated under off-axis illumination and captured and detected by the vision system.

The existing appearance visual detection system can not effectively detect micron-sized attached foreign matters and can not provide accurate upper and lower limits on the size definition of detectable defects. In the actual production activities, the panel manufacturers grade the defects according to the sizes of the attached foreign matters. In order to accurately display the contour of the conforming foreign object, a conventional appearance visual inspection system needs to illuminate the details of the contour of the foreign object as much as possible, and the illumination light source is relatively complicated and bulky in structural design, and even so, it is difficult to overcome some defects such as the size determination of the hemp-like foreign object.

Therefore, a screen layering defect detecting device is proposed to solve the deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a screen layering defect detection device for solving the technical problems, which is characterized in that a wide-field detection mechanism is used for shooting an integral screen image to obtain the coordinate position of an object defect on a screen, the screen is moved to a layering detection mechanism through a bearing mechanism, the layering position is given according to the definition of a foreign object defect outline, a defect adjusting image is accurately extracted, and the size of the defect adjusting image is analyzed.

The technical scheme for solving the technical problems is as follows: this but screen layering defect detection device includes: the workstation, the fixed portal frame that is equipped with on the workstation, be provided with the X axle slip table on the portal frame, it is equipped with wide field of vision detection mechanism and layering detection mechanism to slide on the X axle slip table, be equipped with on the X axle slip table and be used for driving wide field of vision detection mechanism with layering detection mechanism follows the gliding X axle drive assembly of X axle slip table length direction, be provided with Y axle slip table on the workstation, it is used for moving the screen to slide on the Y axle slip table wide field of vision detection mechanism with layering detection mechanism detection area's bears the mechanism, be equipped with on the Y axle slip table and be used for driving bear the mechanism and follow the gliding Y axle drive assembly of Y axle slip table length direction.

Has the advantages that: the whole image of the screen is shot through the wide-field detection mechanism, the coordinate position of the object defect on the screen is obtained, the screen is moved to the layered detection mechanism through the bearing mechanism, the layered position is given according to the definition of the outline of the foreign object defect, the defect adjustment image is accurately extracted, and the size of the defect adjustment image is analyzed.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, wide field of vision detection mechanism includes wide field of vision telecentric mirror head and first camera, first camera slides and sets up on the X axle slip table, install on the first camera wide field of vision telecentric mirror head.

The beneficial effect of adopting the further scheme is that: defects on each layer can be collected simultaneously and the entire product is in view.

Further, layering detection mechanism includes microscope head, second camera and step motor, the second camera with first camera slides through shared mounting panel and sets up on the X axle slip table, the second camera is installed microscope head, step motor sets up on the mounting panel, step motor's output with second camera transmission is connected and is used for driving the second camera moves in vertical direction.

The beneficial effect of adopting the further scheme is that: the stepping motor drives the microscope lens and the second camera to move in the vertical direction and position the microscope lens and the second camera to different layers, so that each layer of the image collected by the second camera can be focused clearly, and the height of the defect can be detected conveniently.

Further, it lights a lamp tool to remove the mechanism of bearing including adsorption platform and tucking, the adsorption platform slides and sets up on the Y axle slip table, install on the adsorption platform and be used for lightening the screen tucking lights a lamp tool.

The beneficial effect of adopting the further scheme is that: the adsorption platform ensures the flatness of the surface of the product, and the needle pressing lighting fixture controls the lighting picture of the product.

Further, the X-axis transmission assembly and the Y-axis transmission assembly are both screw rod transmission assemblies.

The beneficial effect of adopting the further scheme is that: the screw rod transmission assembly is good in transmission effect and good in positioning.

Further, the bottom of workstation is provided with the supporting leg.

The beneficial effect of adopting the further scheme is that: the support stability is strong, and the security is high.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a work table; 21. a wide-field telecentric lens; 22. a first camera; 31. a micro-lens; 32. a second camera; 33. a stepping motor; 41. an adsorption platform; 42. pressing needle lighting fixture; 5. a gantry; 6. supporting legs; 7. an X-axis sliding table; 8. y axle slip table.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Examples

As shown in fig. 1, the present embodiment provides a screen layering defect detecting apparatus, including: workstation 1, the bottom of workstation 1 is provided with supporting leg 6, be equipped with portal frame 5 through the bolt fastening on the workstation 1, the fixed X axle slip table 7 that is provided with on portal frame 5, it is equipped with wide field of vision detection mechanism and layering detection mechanism to slide on the X axle slip table 7, be equipped with on the X axle slip table 7 and be used for driving wide field of vision detection mechanism with layering detection mechanism follows the gliding X axle drive assembly of 7 length direction of X axle slip table, be provided with Y axle slip table 8 on the workstation 1, it is used for moving the screen to slide on the Y axle slip table 8 be equipped with and be used for moving the screen wide field of vision detection mechanism with layering detection mechanism detection area's bears the mechanism, be equipped with on the Y axle slip table 8 and be used for driving bear the mechanism and follow the gliding Y axle drive assembly of 8 length direction of Y axle slip table.

It should be noted that the X-axis transmission assembly and the Y-axis transmission assembly are both screw rod transmission assemblies. The transmission screw rod and the driving motor are both arranged on the frame, the output end of the driving motor is in transmission connection with one end of the transmission screw rod, the transmission screw rod is provided with a transmission nut, and the transmission screw rod is in transmission connection with the transmission nut screw rod.

Specifically, the wide-field detection mechanism comprises a wide-field telecentric lens 21 and a first camera 22, the first camera 22 is slidably arranged on the X-axis sliding table 7, and the wide-field telecentric lens 21 is mounted on the first camera 22; layering detection mechanism includes microscope lens 31, second camera 32 and step motor 33, second camera 32 with first camera 22 slides through shared mounting panel and sets up on the X axle slip table 7, second camera 32 is installed microscope lens 31, step motor 33 sets up on the mounting panel, step motor 33's output with second camera 32 transmission is connected and is used for driving second camera 32 removes in the vertical direction.

Specifically, an X guide rail is arranged on the X-axis sliding table 7, and the first camera 22 and the second camera 32 are slidably arranged on the X guide rail through a mounting plate.

Specifically, the bearing mechanism comprises an adsorption platform 41 and a pressing pin lighting fixture 42, the adsorption platform 41 is arranged on the Y-axis sliding table 8 in a sliding mode, and the pressing pin lighting fixture 42 used for lighting the screen is installed on the adsorption platform 41.

Specifically, a Y guide rail is arranged on the Y-axis sliding table 8, and the adsorption platform 41 is slidably arranged on the Y guide rail.

The working principle is as follows: the screen is placed on the adsorption platform 41, the adsorption and lighting fixture 42 on the adsorption platform 41 adsorbs and lights, the Y-axis transmission component drives the screen to move along the Y-axis, the X-axis transmission component drives the wide-field detection mechanism and the layered detection mechanism to move along the X-axis, so that the lighted screen is transmitted to the position under the wide-field detection mechanism, the whole image under the bright picture is collected by the wide-field detection mechanism, the bearing mechanism converts the current coordinate position into the position coordinate of the layered detection mechanism and controls the layered detection mechanism to shift to the defect position, namely, the lighted screen taking the defect as the center is transmitted to the position under the layered detection mechanism; the stepping motor drives the layered detection mechanism to sequentially acquire images of each level from the surface of the screen to the backlight prism.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A screen delamination defect detecting apparatus, comprising:

workstation (1), fixed portal frame (5) of being equipped with on workstation (1), be provided with X axle slip table (7) on portal frame (5), it is equipped with wide field of vision detection mechanism and layering detection mechanism to slide on X axle slip table (7), be equipped with on X axle slip table (7) and be used for driving wide field of vision detection mechanism with layering detection mechanism follows X axle slip table (7) the gliding X axle drive assembly of length direction, be provided with Y axle slip table (8) on workstation (1), it is equipped with to be used for removing the screen on Y axle slip table (8) wide field of vision detection mechanism with the mechanism that bears of layering detection mechanism detection area, be equipped with on Y axle slip table (8) and be used for driving it follows to bear the mechanism Y axle slip table (8) the gliding Y axle drive assembly of length direction.

2. The screen layering defect detecting device of claim 1, characterized in that, wide-field of view detection mechanism includes wide-field of view telecentric lens (21) and first camera (22), first camera (22) slide setting on X axle slip table (7), install on first camera (22) wide-field of view telecentric lens (21).

3. The screen layering defect detecting device of claim 2, characterized in that, layering detection mechanism includes microscope lens (31), second camera (32) and step motor (33), second camera (32) with first camera (22) slide through the mounting panel that shares and set up on X axle slip table (7), install second camera (32) microscope lens (31), step motor (33) sets up on the mounting panel, the output of step motor (33) with second camera (32) transmission is connected and is used for driving second camera (32) move in vertical direction.

4. The screen layering defect detecting device according to claim 1, wherein the bearing mechanism comprises an adsorption platform (41) and a pressing pin lighting fixture (42), the adsorption platform (41) is slidably disposed on the Y-axis sliding table (8), and the pressing pin lighting fixture (42) for lighting the screen is mounted on the adsorption platform (41).

5. The screen layering defect detecting device of any one of claims 1-4, wherein the X-axis transmission assembly and the Y-axis transmission assembly are both screw transmission assemblies.

6. The screen layering defect detecting device of any one of claims 1-4, characterized in that the bottom of the workbench (1) is provided with support legs (6).