CN112763500A

CN112763500A - AOI (automated optical inspection) mechanism for ultra-large panel

Info

Publication number: CN112763500A
Application number: CN202011580106.5A
Authority: CN
Inventors: 徐国龙
Original assignee: Wuhan Jingce Electronic Group Co Ltd; Suzhou Hirose Opto Co Ltd
Current assignee: Wuhan Jingce Electronic Group Co Ltd; Suzhou Hirose Opto Co Ltd; Wuhan Jingce Electronic Technology Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-05-07

Abstract

The application relates to an ultra-large panel AOI detection mechanism, include: the lighting frame comprises a peripheral frame and a lighting source arranged on the frame, and the irradiation direction of the lighting source faces to the center of the lighting frame; the optical detection module is arranged on one side of the illumination frame and comprises a camera component and a distance adjusting component, and the camera component can be driven by the distance adjusting component to adjust the distance between the camera component and the illumination frame. The invention relates to an AOI detection mechanism of an oversized panel, which is characterized in that (1) the first oversized CTAOI detection device (compatible with 110-55 inches) in the industry is adopted; (2) the mechanism is online detection, and the conveying of the panel is not influenced; (3) the mechanism can be matched with manual detection, and can also be used for the function of sampling and inspecting products.

Description

AOI (automated optical inspection) mechanism for ultra-large panel

Technical Field

The application belongs to the technical field of display panel detects, especially relates to a super large panel AOI detection mechanism.

Background

The display panel, namely the liquid crystal screen, determines the brightness, the contrast, the color and the visual angle of the liquid crystal display to a great extent, and the quality of the liquid crystal display not only relates to the quality, the price and the market trend of the liquid crystal display, but also relates to the functional parameters, the display effect, the service life and the like of the whole product.

In each production link, the display panel may be produced badly to cause unqualified products, so it is very important to perform strict detection on the display panel in the production process. The Inspection of the display panel sometimes involves analyzing whether an image of the display panel to be inspected is consistent with a standard image by using an Automatic Optical Inspection (AOI) apparatus.

The automatic AOI detection of CT AOI sections of various existing large panel factories is mainly medium-small in size, large in size can only be manually detected, and automatic AOI detection of oversized panels is not available at present. With the development of the times, the demand of the oversized panel is gradually increased, and the requirements on the detection stability and the yield of the large panel are also gradually increased. The existing oversized panel, such as 110 inches, can only be detected manually in the CT process section, and the detection has a plurality of instabilities. The large panel has a high cost, resulting in a large loss.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the automatic AOI detection mechanism for the ultra-large panel in the prior art is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an oversized panel AOI detection mechanism, comprising:

the lighting frame comprises a peripheral frame and a lighting source arranged on the frame, and the irradiation direction of the lighting source faces to the center of the lighting frame;

the optical detection module is arranged on one side of the illumination frame and comprises a camera component and a distance adjusting component, and the camera component can be driven by the distance adjusting component to adjust the distance between the camera component and the illumination frame.

Preferably, in the AOI detection mechanism with the oversized panel, two ends of the frames at two sides of the illumination frame are connected with the illumination light source through the illumination adjustment assembly, and the illumination adjustment assembly can adjust the position of the illumination light source.

Preferably, the ultra-large panel AOI detection mechanism of the present invention, the illumination adjustment assembly comprises:

the first fixing plates are fixed at two ends of the frame at two sides of the lighting frame;

the second fixing plate is provided with a first waist-shaped hole with the length along a first direction and is fixed with the first fixing plate through a screw arranged in the first waist-shaped hole;

the third fixing plate is provided with a second waist-shaped hole with the length along a second direction and is fixed with the second fixing plate through a screw arranged in the second waist-shaped hole; the end part of the third fixing plate is provided with a slot, one end of the slot is provided with a clamping hole with an axis along a third direction, and the third fixing plate is also provided with a locking screw which is used for adjusting the width of the slot;

the adjusting rod is arranged in the clamping hole;

and the fixing clamp is fixed on the adjusting rod and can fix the lighting source.

Preferably, in the mechanism for detecting an AOI of an oversized panel, fixing pieces are arranged on the peripheral frames of the lighting frame, a part of the lighting sources is mounted on the fixing pieces, arc-shaped grooves are formed in the fixing pieces, knobs are arranged in the arc-shaped grooves, threads are formed at one ends of the knobs, and one ends of the knobs can be connected with the end parts of the part of the lighting sources through the threads.

Preferably, according to the AOI detection mechanism with the oversized panel, a guide rail along a third direction is fixed on a frame on the lower side of the illumination frame, a sliding block is arranged on the guide rail, and one side of the sliding block is locked with the guide rail through a sliding block locking screw; a support frame is fixed on the sliding block, and the fixing piece is fixed on the support frame.

Preferably, according to the AOI detection mechanism with the oversized panel, the camera assemblies are arranged in a row along the length direction of the illumination frame, and the number of the camera assemblies is 3-7.

Preferably, the AOI detection mechanism for an oversized panel of the present invention, the distance adjustment assembly comprises:

a motor;

the screw rod can be driven by the motor to rotate;

a lead screw nut mounted on the lead screw;

the camera assembly is installed on a camera support, and the camera support is fixed with the lead screw nut.

Preferably, in the AOI detection mechanism with the oversized panel, the camera assembly is connected with the camera bracket through the fine adjustment assembly; the fine tuning assembly comprises: camera fine setting platform, camera fine setting slider, micro-section of thick bamboo, camera fine setting platform is fixed on the camera support, be equipped with the fine setting guide rail on the camera fine setting platform, camera fine setting slider is installed on the fine setting guide rail, the micro-section of thick bamboo is fixed camera fine setting platform one side, the tip of micro-section of thick bamboo supports and leans on camera fine setting slider one side, can finely tune when micro-section of thick bamboo rotates the position of camera fine setting slider.

Preferably, according to the AOI detection mechanism with the oversized panel, a manual detection platform is arranged between the illumination frame and the optical detection module.

Preferably, in the ultra-large panel AOI detection mechanism of the present invention, an included angle between the illumination frame and the vertical plane is 5 ° to 10 °.

The invention has the beneficial effects that:

the oversized AOI detection equipment is compatible with automatic AOI detection of a display panel of 110-55 inches.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

FIG. 1 is a schematic structural diagram of an AOI detection mechanism of an oversized panel according to an embodiment of the application;

FIG. 2 is a schematic view of an illumination frame structure according to an embodiment of the present application;

FIG. 3 is a schematic diagram of the structures of the two side frames of the lighting frame according to the embodiment of the present application;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a schematic view of the structure of an illumination source on the underside of an illumination frame according to an embodiment of the present application;

FIG. 6 is an enlarged partial view of FIG. 5;

FIG. 7 is a schematic structural diagram of an optical inspection module according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a camera assembly according to an embodiment of the present application;

fig. 9 is a partially enlarged view of fig. 8.

The reference numbers in the figures are:

1 Lighting frame

2 optical detection module

3 Manual detection platform

11 rims

12 illumination light source

21 Camera Module

22 distance adjusting assembly

23 Camera support

111 first fixing plate

112 second fixing plate

113 third fixing plate

114 adjusting rod

115 fixation clamp

116 securing tab

117 guide rail

118 slide block

119 support frame

211 fine tuning assembly

212 horizontal rotation fine tuning platform

213 vertical rotation fine tuning platform

221 electric motor

222 leading screw

1121 first waist-shaped hole

1131 second kidney-shaped hole

1132 slotted joint

1133 clip hole

1161 circular arc groove

1162 knob

1181 slide block locking screw

2111 Camera Fine tuning platform

2112 Camera Fine tuning slide block

2113 micro-drum.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Examples

This embodiment provides an AOI detection mechanism with a very large panel, as shown in fig. 1, including:

the lighting frame 1 comprises a peripheral frame 11 and a lighting source 12 arranged on the frame 11, wherein the lighting source 12 irradiates towards the center of the lighting frame 1;

the optical detection module 2 is arranged on one side of the illumination frame 1, the optical detection module 2 comprises a camera component 21 and a distance adjusting component 22, and the camera component 21 can be driven by the distance adjusting component 22 to adjust the distance to the illumination frame 1.

The existing oversized panel, such as 110 inches, can only be detected manually in the CT process section, and the detection has a plurality of instabilities. The large panel has a high cost, resulting in a large loss. The super large panel AOI detection mechanism of this embodiment can be compatible 55 cun to 110 cun panel size's full-automatic AOI detect, satisfies the full automated inspection demand of jumbo size panel factory.

The super large panel AOI detection mechanism of this embodiment sets up and uses in transfer chain one side, is equipped with a roll-over stand that can overturn display panel on the transfer chain (this equipment is prior art), work flow:

(1) the display panel is conveyed on a full-automatic line, the panel is conveyed to an AOI detection area through a conveying mechanism, the fibers of the display panel are arranged on a turnover frame, and the turnover frame rotates by a certain angle to enable the display panel to be attached to the illumination frame 1;

(2) the illumination light source 12 on the illumination frame 1 is turned on to provide a light source required by the detection of the optical detection module 2;

(3) the camera component 21 adjusts the detection lens to the size suitable for the display panel through the distance adjusting component 22 for detection;

(4) and after the detection is finished, the turnover frame is reset, the display panel is put down, and the display panel is continuously conveyed to a lower station.

Preferably, in the AOI detection mechanism with an oversized panel of this embodiment, as shown in fig. 2 to 4, two ends of the frames 11 at two sides of the illumination frame 1 are connected to the illumination light source 12 through an illumination adjustment assembly, and the illumination adjustment assembly can adjust the position of the illumination light source 12.

Preferably, in the AOI detection mechanism with an oversized panel according to this embodiment, as shown in fig. 4, the illumination adjustment assembly includes:

first fixing plates 111 fixed to both ends of the frame 11 on both sides of the lighting frame 1;

a second fixing plate 112 having a first waist-shaped hole 1121 with a length along a first direction, the second fixing plate 112 being fixed to the first fixing plate 111 by means of screws disposed in the first waist-shaped hole 1121;

a third fixing plate 113 having a second kidney-shaped hole 1131 with a length along a second direction, the third fixing plate 113 being fixed to the second fixing plate 112 by a screw disposed in the second kidney-shaped hole 1131; a slit 1132 is arranged at the end of the third fixing plate 113, one end of the slit 1132 is provided with a clamping hole 1133 with an axis along a third direction, and a locking screw is further arranged on the third fixing plate 113 and used for adjusting the width of the slit 1132;

an adjustment rod 114, the adjustment rod 114 being mounted within the clamp hole 1133;

and a fixing clip 115 fixed to the adjustment lever 114, wherein the fixing clip 115 can fix the illumination light source 12.

Specifically, in this embodiment, the first direction, the second direction, and the third direction correspond to the X, Y, Z axes of the cartesian coordinate system, so that the fixing clip 115 can be adjusted back and forth, left and right, and up and down.

Preferably, as shown in fig. 5 and 6, the AOI detection mechanism with an oversized panel of this embodiment, a fixing plate 116 is disposed on the peripheral frame 11 of the lighting frame 1, a part of the lighting sources 12 is mounted on the fixing plate 116, an arc-shaped groove 1161 is disposed on the fixing plate 116, a knob 1162 is disposed in the arc-shaped groove 1161, one end of the knob 1162 has a thread, and one end of the knob 1162 can be connected to an end of the part of the lighting sources 12 through the thread. The illumination source 12 with the structure can adjust the angle around the arc-shaped groove 1161 after the knob 1162 is loosened, and then the knob 1162 is tightened, so that the illumination angle of the illumination source 12 can be adjusted.

Preferably, as shown in fig. 5 and 6, in the AOI detection mechanism with an oversized panel of this embodiment, a guide rail 117 along a third direction is fixed on the frame 11 on the lower side of the lighting frame 1, a slider 118 is arranged on the guide rail 117, and one side of the slider 118 is locked with the guide rail 117 by a slider locking screw 1181; a support 119 is fixed to the slide block 118, and the fixing piece 116 is fixed to the support 119. This structure allows the height of the illumination light source 12 to be adjusted.

Preferably, in the AOI detection mechanism with an oversized panel of the present embodiment, as shown in fig. 7, the camera assemblies 21 are arranged in a row along the length direction of the illumination frame 1, and the number of the camera assemblies 21 is 3 to 7. Since the shooting range of a single camera module 21 is conical, the shooting surface is circular, and a shooting surface which is approximately rectangular as a whole is formed by rows of circular shooting surfaces, when the number of the camera modules 21 is 3-7, preferably 5, the shooting range is better.

Preferably, in the AOI detecting mechanism with an oversized panel according to this embodiment, as shown in fig. 7, the distance adjusting assembly 22 includes:

a motor 221;

a screw 222 capable of rotating under the driving of the motor 221;

a lead screw nut mounted on the lead screw 222;

the camera assembly 21 is mounted on a camera bracket 23, and the camera bracket 23 is fixed with the lead screw nut.

The distance adjusting assembly 22 drives the lead screw nut to move through the rotation of the lead screw 222, so as to realize the primary adjustment of the camera assembly 21.

Preferably, in the AOI detection mechanism with an oversized panel according to this embodiment, as shown in fig. 8, the camera assembly 21 is connected to the camera bracket 23 through a fine adjustment assembly 211; the fine tuning component 211 comprises: camera fine tuning platform 2111, camera fine tuning slider 2112 and micro-cartridge 2113, camera fine tuning platform 2111 is fixed on camera support 23, be equipped with the fine tuning guide rail on camera fine tuning platform 2111, camera fine tuning slider 2112 is installed on the fine tuning guide rail, micro-cartridge 2113 is fixed camera fine tuning platform 2111 one side, the tip of micro-cartridge 2113 supports and leans on camera fine tuning slider 2112 one side, micro-cartridge 2113 can finely tune the position of camera fine tuning slider 2112 when rotating. By the rotation of the micro drum 2113, fine adjustment of the camera assembly 21 is achieved. In addition, the fine adjustment of the camera module, as shown in fig. 8, further includes a set of horizontal rotation fine adjustment platforms 212 connected below the fine adjustment module 211, a horizontal plane rotation adjustment is performed through a fine adjustment rotating shaft, a set of vertical rotation fine adjustment platforms 213, and a fine adjustment of a vertical plane rotation is performed through a fine adjustment rotating shaft.

Preferably, in the AOI inspection mechanism with an oversized panel according to the present embodiment, as shown in fig. 1, a manual inspection station 3 is disposed between the illumination frame 1 and the optical inspection module 2. The manual detection station 3 is compatible with conventional manual detection.

Preferably, in the AOI detection mechanism with an oversized panel of the present embodiment, an included angle between the illumination frame 1 and a vertical plane is 5 ° to 10 °, and preferably 8 °. Because the completely vertical display panel needs to be fixed accurately, the difficulty and stability of fixing are increased, the slightly inclined fixing mode can greatly reduce the burden of positioning the display panel, particularly a large-size panel, and the AOI detection is difficult due to overlarge inclination, so that the selection of 5-10 degrees is better.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an oversized panel AOI detection mechanism which characterized in that includes:

the lighting frame (1) comprises a peripheral frame (11) and a lighting source (12) arranged on the frame (11), and the irradiation direction of the lighting source (12) faces to the center of the lighting frame (1);

the optical detection module (2) is arranged on one side of the illumination frame (1), the optical detection module (2) comprises a camera component (21) and a distance adjusting component (22), and the camera component (21) can be driven by the distance adjusting component (22) to adjust the distance to the illumination frame (1).

2. The AOI detection mechanism with the oversized panel according to claim 1, wherein two ends of the frames (11) at two sides of the illumination frame (1) are connected with the illumination light source (12) through an illumination adjustment assembly, and the illumination adjustment assembly can adjust the position of the illumination light source (12).

3. The oversized-panel AOI detection mechanism of claim 2, wherein the illumination adjustment assembly comprises:

the first fixing plates (111) are fixed at two ends of the frames (11) at two sides of the lighting frame (1);

a second fixing plate (112) having a first waist-shaped hole (1121) with a length along a first direction, the second fixing plate (112) being fixed to the first fixing plate (111) by a screw provided in the first waist-shaped hole (1121);

a third fixing plate (113) having a second kidney-shaped hole (1131) with a length along a second direction, the third fixing plate (113) being fixed to the second fixing plate (112) by a screw provided in the second kidney-shaped hole (1131); a slit (1132) is formed in the end portion of the third fixing plate (113), a clamping hole (1133) with an axis along a third direction is formed in one end of the slit (1132), and a locking screw is further arranged on the third fixing plate (113) and used for adjusting the width of the slit (1132);

an adjustment rod (114), the adjustment rod (114) being mounted within the clamp aperture (1133);

and the fixing clamp (115) is fixed on the adjusting rod (114), and the fixing clamp (115) can fix the illumination light source (12).

4. The AOI detection mechanism with the oversized panel according to claim 3, wherein a fixing plate (116) is arranged on a frame (11) around the illumination frame (1), a part of the illumination light sources (12) is installed on the fixing plate (116), an arc-shaped groove (1161) is formed in the fixing plate (116), a knob (1162) is arranged in the arc-shaped groove (1161), a thread is arranged at one end of the knob (1162), and one end of the knob (1162) can be connected with the end of the part of the illumination light sources (12) through the thread.

5. The AOI detection mechanism with the oversized panel according to claim 4, is characterized in that a guide rail (117) along a third direction is fixed on a frame (11) at the lower side of the lighting frame (1), a slide block (118) is arranged on the guide rail (117), and one side of the slide block (118) is locked with the guide rail (117) through a slide block locking screw (1181); a support frame (119) is fixed on the sliding block (118), and the fixing piece (116) is fixed on the support frame (119).

6. The ultra-large panel AOI detection mechanism according to any one of claims 1 to 5, wherein said camera assemblies (21) are arranged in a row along the length direction of said illumination frame (1), and the number of said camera assemblies (21) is 3-7.

7. The oversized-panel AOI detection mechanism according to any one of claims 1-6, wherein the distance adjustment assembly (22) comprises:

a motor (221);

a screw (222) which can be rotated by the motor (221);

a lead screw nut mounted on the lead screw (222);

the camera assembly (21) is mounted on a camera bracket (23), and the camera bracket (23) is fixed with the screw nut.

8. The ultra large panel AOI inspection mechanism of claim 7, wherein the camera assembly (21) is connected to the camera bracket (23) by a fine adjustment assembly (211); the fine tuning assembly (211) comprises: camera fine setting platform (2111), camera fine setting slider (2112), micro-differential section of thick bamboo (2113), camera fine setting platform (2111) is fixed on camera support (23), be equipped with the fine setting guide rail on camera fine setting platform (2111), install camera fine setting slider (2112) on the fine setting guide rail, micro-differential section of thick bamboo (2113) is fixed camera fine setting platform (2111) one side, the tip of micro-differential section of thick bamboo (2113) supports and leans on camera fine setting slider (2112) one side, can finely tune when micro-differential section of thick bamboo (2113) rotates the position of camera fine setting slider (2112).

9. The mechanism according to any of claims 1-8, wherein a manual inspection station (3) is provided between the illumination frame (1) and the optical inspection module (2).

10. The mechanism according to any of claims 1-9, wherein the angle between the illumination frame (1) and the vertical plane is 5 ° to 10 °.