CN107957633B

CN107957633B - Precise alignment system for LCD module

Info

Publication number: CN107957633B
Application number: CN201711157656.4A
Authority: CN
Inventors: 徐继武; 陆豪亮; 姚毅; 陈鹏
Original assignee: Suzhou Luster Vision Intelligent Device Co Ltd
Current assignee: Suzhou Luster Vision Intelligent Device Co Ltd
Priority date: 2017-11-20
Filing date: 2017-11-20
Publication date: 2020-09-29
Anticipated expiration: 2037-11-20
Also published as: CN107957633A

Abstract

The application discloses accurate counterpoint system of LCD module includes: the device comprises a movable support, a support plate, an FPC adsorption device, an LCD adsorption device, a jig panel and a first camera; the FPC adsorption device comprises a fixed plate, a moving body, a turntable, a suspension arm, a storage rack, a support rod and a suction nozzle; the LCD adsorption device includes: the device comprises a connecting body, a first camera, an object placing disc, a connecting rod and a sucker; the jig panel includes: the two limiting units are respectively and correspondingly arranged below the FPC adsorption device and the LCD adsorption device; the FPC spacing unit includes: the camera comprises a pin groove with a concave structure, an FPC type groove and a second camera arranged at the front end of the pin groove. The application provides a smart counterpoint system can effectively solve the problem that current smart counterpoint system counterpoint precision is low.

Description

Precise alignment system for LCD module

Technical Field

The application relates to the technical field of lighting tests of LCD modules, in particular to a precise alignment system of an LCD module.

Background

The LCD module consists of two parts, namely, a Flexible Printed Circuit (FPC) and a Liquid Crystal Display (LCD), and in the detection work of the LCD module, the lighting test can detect defects such as dark spots, bright spots, dark lines, bright lines and the like in the LCD display. Before the lighting test, the Connect (connector) of the FPC terminal needs to be plugged into the probe and other devices on the test fixture, so that accurate positioning of the LCD is an important prerequisite for ensuring fast and accurate lighting test.

There are two methods for positioning the LCD module, the first method is to use the positioning fixture shown in fig. 1 for positioning. Firstly, the feeding manipulator automatically positions through a Charge Coupled Device (CCD) camera, places an LCD module to be detected on a panel of a positioning jig, and the LCD module is adsorbed and fixed by a sucker on the panel of the jig, and simultaneously performs coarse positioning on the FPC connector a by using a limit stop. Then, the telescopic cylinder in the y direction extends out towards the FPC connector A, so that the y direction of the FPC connector A is fixed; then the telescopic cylinder in the x direction extends out towards the FPC connector A, so that the x direction of the FPC connector A is fixed; and finally, the telescopic cylinder in the z direction extends out towards the direction of the FPC connector A, so that the z direction of the FPC connector A is fixed. Through the movement adjustment in the three directions, the FPC connector A is fixed in the three directions, and the purpose of accurate positioning is achieved.

A second method is to use an integral positioning device as shown in fig. 2. The method is to take the LCD and the FPC as a whole and adjust the LCD module as a whole. At first, material loading manipulator is inhaled LCD and FPC simultaneously through a plurality of sucking discs B, then gathers the image through the CCD camera to control whole LCD module and use FPC connector B's geometric centre as the adjustment benchmark, fix FPC connector B's position at first, owing to be to LCD module overall adjustment, consequently LCD's position also can be fixed simultaneously.

The inventor of this application has some problems when using the accurate counterpoint system of current LCD module, when carrying out accurate counterpoint through a method, owing to used the cylinder in all directions, the overall structure that leads to positioning jig is very complicated, and the shared space of telescopic cylinder is big moreover. The precise alignment system can only adapt to the detection of a specific type of screen, if a new product is precisely aligned and adjusted, a positioning jig needs to be customized again, the use and maintenance cost is high, the adaptability is poor, and the risk that the flexible cylinder easily crushes the FPC connector when air leakage or failure occurs exists. When the second method is used for precise alignment, the geometric center of the FPC connector is used as an adjustment reference, so that the position of the LCD can deviate along with the position adjustment of the FPC connector, the FPC is long and long, and even if the position of the FPC connector slightly changes, the position of the LCD can correspondingly deviate greatly. Therefore, subsequent automatic film tearing operation is easy, and the LCD is easy to shift out of the visual field of the CCD camera, so that image acquisition errors are caused, and the alignment accuracy is influenced.

Disclosure of Invention

The application provides a smart counterpoint system of LCD module to solve the problem that current smart counterpoint system counterpoint precision is low.

According to the embodiment of the application, provide a smart counterpoint system of LCD module, include: the device comprises a movable support, a support plate, an FPC adsorption device, an LCD adsorption device, a jig panel and a first camera;

the FPC adsorption device and the LCD adsorption device are arranged on the outer wall of the side face of the supporting plate along the length direction of the supporting plate and are in sliding connection with the movable support through the supporting plate;

the FPC adsorption device comprises a fixed plate, a moving body, a turntable, a suspension arm, a storage rack, a support rod and a suction nozzle;

the turntable is connected with the fixed plate through the moving body, and the fixed plate is fixed on the supporting plate; the movable body comprises a connecting plate and a sliding plate, one side of the connecting plate is fixed on the fixed plate, the other side of the connecting plate is connected with the sliding plate in a sliding manner, and the sliding plate is rotationally connected with the turntable; the storage rack and the rotary table are fixedly suspended through the suspension arm; the support rod is fixed on the storage rack, and one end of the support rod close to the jig panel is provided with a suction nozzle;

the LCD adsorption device includes: the device comprises a connecting body, a first camera, an object placing disc, a connecting rod and a sucker;

the object placing plate is fixed on the supporting plate through the connecting body; the connecting body is of a hollow structure, and the first camera is arranged in the connecting body and faces the direction of the jig panel; the connecting rod is inserted on the object placing disc, and a sucking disc is arranged at one end close to the jig panel;

the jig panel includes: the two limiting units are respectively and correspondingly arranged below the FPC adsorption device and the LCD adsorption device;

the FPC spacing unit includes: the camera comprises a pin groove with a concave structure, an FPC type groove and a second camera arranged at the front end of the pin groove.

Optionally, the movable support adopts a right-angled triangle structure;

the movable support is respectively provided with a right-angle side of a right-angled triangle at one side connected with the external device and one side connected with the support plate.

Optionally, four positioning grooves are arranged on the storage tray;

the positioning grooves are radially arranged towards the four corners of the object placing disc by taking the geometric center of the object placing disc as a center;

the two adjacent positioning grooves are in mirror symmetry by taking the geometric center line of the positioning groove as an axis;

the two opposite positioning grooves are centrosymmetric by taking the geometric center of the positioning groove as the center.

Optionally, the suction nozzle and the suction cup are made of rubber materials.

Optionally, the FPC limiting unit and the LCD limiting unit are respectively provided with a first taking and placing groove and a second taking and placing groove;

the first taking and placing groove is arranged at the edge of the FPC limiting unit and is sunken towards the inside of the FPC limiting unit; the second taking and placing groove is formed in the edge of the LCD limiting unit and is sunken towards the inside of the LCD limiting unit.

Optionally, the LCD position limiting unit is divided into an upper layer and a lower layer, and the size of the upper layer of the LCD position limiting unit is larger than the size of the lower layer of the LCD position limiting unit.

Optionally, a support member is arranged at the edge of the bent portion of the FPC type groove.

Optionally, the FPC spacing unit further includes: an FPC compression joint plate; the FPC compression joint plate comprises a clamping groove and a compression piece embedded in the clamping groove; the clamping groove is correspondingly arranged above the pin groove, and the inner size of the clamping groove is larger than the outer size of the pin groove; the pressing piece is correspondingly arranged above the sunken part of the pin groove.

Optionally, a light supplement source is further arranged on the edge of the FPC limit unit.

Optionally, an adsorption plate is arranged inside the LCD limiting unit.

Known from above technique, this application provides a smart counterpoint system of LCD module, includes: the device comprises a movable support, a support plate, an FPC adsorption device, an LCD adsorption device, a jig panel and a first camera; the FPC adsorption device and the LCD adsorption device are arranged on the outer wall of the side face of the supporting plate along the length direction of the supporting plate and are in sliding connection with the movable support through the supporting plate; the FPC adsorption device comprises a fixed plate, a moving body, a turntable, a suspension arm, a storage rack, a support rod and a suction nozzle; the turntable is connected with the fixed plate through the moving body, and the fixed plate is fixed on the supporting plate; the movable body comprises a connecting plate and a sliding plate, one side of the connecting plate is fixed on the fixed plate, the other side of the connecting plate is connected with the sliding plate in a sliding manner, and the sliding plate is rotationally connected with the turntable; the storage rack and the rotary table are fixedly suspended through the suspension arm; the support rod is fixed on the storage rack, and one end of the support rod close to the jig panel is provided with a suction nozzle; the LCD adsorption device includes: the device comprises a connecting body, a first camera, an object placing disc, a connecting rod and a sucker; the object placing plate is fixed on the supporting plate through the connecting body; the connecting body is of a hollow structure, and the first camera is arranged in the connecting body and faces the direction of the jig panel; the connecting rod is inserted on the object placing disc, and a sucking disc is arranged at one end close to the jig panel; the jig panel includes: the two limiting units are respectively and correspondingly arranged below the FPC adsorption device and the LCD adsorption device; the FPC spacing unit includes: the camera comprises a pin groove with a concave structure, an FPC type groove and a second camera arranged at the front end of the pin groove. When the device is used, parameters such as relevant sizes and hardness of the LCD, the FPC and the FPC connector are obtained and input, so that adsorption parameters suitable for the LCD and the FPC are worked out, and a suitable placing position of the LCD and the FPC connector is determined. The FPC adsorption device and the LCD adsorption device respectively adsorb and fix an FPC and an LCD to be detected, the FPC and the LCD are moved above a jig panel, and the FPC adsorption device and the LCD adsorption device are driven to move in the length direction of the moving support through the sliding of the supporting plate on the moving support according to preset position parameters; the method comprises the steps that a first camera in a connecting body is utilized to shoot images of the position of an LCD in real time and upload the images to an industrial personal computer, and whether the current position of the LCD is a qualified position or not is judged by carrying out coincidence comparison on the real-time images of the position of the LCD and preset position parameters. And aligning the position of the FPC while aligning the position of the LCD, shooting an image of the position of the FPC connector in real time by using a second camera, uploading the image to an industrial personal computer, and judging whether the current position of the FPC connector is a qualified position or not by performing coincidence comparison on the real-time image of the position of the FPC connector and preset position parameters. When LCD and FPC all are located the within range of predetermineeing the position parameter, the control moves the support, drives LCD and FPC wholly along vertical direction downstream to put into LCD spacing unit with LCD, put into FPC spacing unit with FPC. The application provides a smart alignment system can aim at through adjusting LCD and FPC part simultaneously to mutual interference between each step when avoiding the substep adjustment, thereby effectively guarantee the calibration degree of accuracy.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a first positioning fixture in the prior art according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a second positioning fixture in the prior art according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a precise alignment system for an LCD module according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of an FPC adsorption device provided in the embodiments of the present application;

fig. 5 is a schematic structural diagram of a slide bar provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an LCD adsorption device provided in an embodiment of the present application;

fig. 7(1) - (3) are schematic structural diagrams of three storage trays provided in the embodiment of the present application;

fig. 8 is a schematic structural diagram of a jig panel according to an embodiment of the present disclosure;

fig. 9 is a schematic structural view of an FPC crimping plate provided in an embodiment of the present application;

fig. 10 is a schematic structural diagram of a support member according to an embodiment of the present application.

Illustration of the drawings:

wherein: 1-FPC connector A, 2-position limiting baffle, 3-FPC connector B, 4-sucker B, 5-movable support, 6-support plate, 7-FPC adsorption device, 71-fixed plate, 711-hollow hole, 72-movable body, 721-connecting plate, 722-sliding plate, 73-rotary plate, 74-suspension arm, 75-storage rack, 76-supporting rod, 77-suction nozzle, 8-LCD adsorption device, 81-connecting body, 811-through hole, 82-storage plate, 83-positioning groove, 84-connecting rod, 85-sucker, 9-jig panel, 91-FPC limiting unit, 911-type groove FPC, 912-first groove, 913-pin groove, 92-LCD limiting unit, 921-adsorption plate, 9211-adsorption hole, 922-second picking and placing groove, 93-second camera, 94-FPC pressing plate, 95-clamping groove, 951-pressing piece and 10-first camera.

Detailed Description

Referring to fig. 3, a schematic structural diagram of a precise alignment system for an LCD module is shown.

The application provides a smart counterpoint system of LCD module, includes: the device comprises a movable support 5, a support plate 6, an FPC adsorption device 7, an LCD adsorption device 8, a jig panel 9 and a first camera 10;

FPC adsorption equipment 7 with LCD adsorption equipment 8 follows the length direction of backup pad 6 arranges set up in on the lateral outer wall of backup pad 6, and through backup pad 6 with remove support 5 sliding connection.

Specifically, sliding connection can be realized between the supporting plate 6 and the moving support 5 in various forms such as a slide way, a roller, a ball and the like, and it should be noted that no matter what sliding connection mode is used, the sliding between the supporting plate 6 and the moving support 5 cannot be blocked, so that the FPC is prevented from being torn and damaged. And the sliding cannot be lubricated excessively, so that the phenomenon that the movement is too large and an excessive error is generated is prevented. For example, the fit clearance between the sliding groove and the sliding strip in the sliding way is not too large and can be tight, so that the moving accuracy is ensured; the dropping amount of the lubricating oil can also be reduced.

The round holes are formed in the supporting plate 6, so that the weight of the supporting plate 6 can be effectively reduced, and the load of the movable bracket 5 is reduced; and the round hole structure can turn the borne inner into circumferential decomposition, thereby improving the strength of the support plate 6.

As shown in fig. 4, the FPC suction device 7 includes a fixing plate 71, a moving body 72, a turntable 73, a boom 74, a rack 75, a support rod 76, and a suction nozzle 77;

the turntable 73 and the fixed plate 71 are connected by the moving body 72, and the fixed plate 71 is fixed on the support plate 6; the moving body 72 comprises a connecting plate 721 and a sliding plate 722, one side of the connecting plate 721 is fixed on the fixed plate 71, the other side is connected with the sliding plate 722 in a sliding way, and the sliding plate 722 is connected with the turntable 73 in a rotating way; the rack 75 and the rotary table 73 are suspended and fixed through the suspension arm 74; the support bar 76 is fixed on the rack 75, and a suction nozzle 77 is disposed at one end of the support bar close to the jig panel 9.

Due to the characteristics of the FPC, the FPC is a flexible circuit board, deformation is easily generated in the moving process, the alignment requirement is difficult to meet only through axial adjustment in the horizontal direction, and alignment errors are easily caused. The turntable 73 can realize circumferential alignment of the FPC adsorption device 7 in the horizontal direction, thereby effectively improving the alignment accuracy of the FPC.

As shown in fig. 5, the sliding bar 712 is disposed on the side of the connecting plate 721 connected to the sliding plate 722, the sliding bar 712 has a waist line structure, the sliding plate 722 is provided with a sliding groove, and the opening size of the sliding groove is adapted to the waist size of the sliding bar 712, so that the sliding bar 712 is embedded in the sliding groove, and the FPC attachment 7 does not fall off due to its own weight.

The fixing plate 71 is provided with a hollow 711, and the hollow 711 can effectively reduce the weight of the fixing plate 71, thereby reducing the load of the movable bracket 5.

The supporting rod 76 is of a telescopic structure, and the length of the supporting rod 76 can be flexibly adjusted. If each support rod 76 is different in length during operation, fluctuation is easily formed on the FPC, and along with the descending of the FPC adsorption device 7, the FPC at the position of the support rod 76 with a longer length first contacts the jig panel 9, and the rest of the support rod does not reach the jig panel 9, so that the support rod needs to descend continuously, and at the moment, the FPC which arrives first is squeezed, so that the FPC is damaged. Therefore, before the FPC is adsorbed and fixed, the length of the supporting rod 76 needs to be adjusted, so that the plane formed by each suction nozzle 77 is parallel to the working plane of the jig panel 9, the FPC is prevented from being extruded and torn to be damaged, the FPC is kept not to fluctuate constantly, shadow is prevented from being generated during real-time shooting, the image judgment effect is prevented from being influenced, and the alignment accuracy is effectively improved.

As shown in fig. 6, the LCD adsorption device 8 includes: a connecting body 81, a first camera 10, a storage tray 82, a connecting rod 84 and a suction cup 85;

the object placing plate 82 is fixed on the supporting plate 6 through the connecting body 81; the connecting body 81 is a hollow structure, and the first camera 10 is disposed in the connecting body 81 and faces the jig panel 9; the connecting rod 84 is inserted into the article placing tray 82, and a suction cup 85 is disposed at one end close to the jig panel 9.

First camera 10 can positive shoot LCD adsorption equipment 8's real-time position image, avoids the image distortion scheduling problem that the side direction was shot and is produced, guarantees to judge the degree of accuracy that LCD adsorption equipment 8 is located the position at present.

The side wall of the connecting body 81 is provided with the through hole 811, so that the weight of the connecting body 81 can be effectively reduced, and the working condition of the first camera 10 in the connecting body can be observed conveniently.

The connecting rod 84 is a telescopic hollow structure, the length of the connecting rod 84 can be flexibly adjusted, and the connecting rod is matched with the sucker 85 to generate vacuum adsorption force. If each connecting rod 84 is different in length during operation, the LCD is prone to tilt, the LCD corresponding to the connecting rod 84 with the longer length first contacts the jig panel 9 as the LCD adsorption device 8 descends, and the rest of the connecting rod does not reach the jig panel 9, so that the LCD part which arrives first is extruded in the process of continuously descending the LCD adsorption device 8, and the LCD is damaged. Therefore, before the LCD is fixed by suction, the length of the connecting rod 84 is adjusted to make the plane formed by the suction cups 85 parallel to the working plane of the jig panel 9, so as to effectively prevent the LCD from being damaged by extrusion.

As shown in fig. 8, the jig panel includes: the FPC limiting unit 91 and the LCD limiting unit 92 are respectively and correspondingly arranged below the FPC adsorption device 7 and the LCD adsorption device 8;

the FPC limit unit 91 includes: a pin groove 913 and an FPC type groove 911 having a concave structure, and a second camera 93 disposed at a front end of the pin groove 913.

After FPC and LCD descend to tool panel 9 along with FPC adsorption equipment 7 and LCD adsorption equipment 8, FPC spacing unit 91 and LCD spacing unit 92 can effectively inject FPC and LCD relative position on tool panel 9, make it not take place relative movement, guarantee follow-up testing's smooth, accurate going on. Wherein the pin slots 913 are adapted to the shape of the FPC connector, and correspondingly, the FPC connector is defined in the pin slots 913; FPC molding 912 conforms to the shape of the FPC, which is correspondingly defined in FPC molding 912. In the alignment process of the FPC adsorption device 7, the second camera 93 shoots the position image of the FPC adsorption device 7 in real time, and the position image of the FPC adsorption device 7 shot by the second camera 93 in real time is compared with the preset position parameters through the industrial personal computer, so that the alignment work of the FPC adsorption device 7 which does not conform to the regulation is continued until the alignment is qualified. Because the size of the FPC is relatively small, the structural size of the FPC adsorption device 7 corresponding to the FPC is also relatively small, and the structure is compact, and if the second camera 93 is disposed on the FPC adsorption device 7, the load of the FPC adsorption device 7 is increased, the balance of the FPC adsorption device 7 is affected, and an alignment error is caused, so that the second camera 93 is disposed on the jig panel 9, but not on the FPC adsorption device 7.

When the LCD module accurate alignment system is used, parameters such as relevant sizes and hardness of the LCD, the FPC and the FPC connector are obtained firstly and input into an industrial personal computer, so that adsorption parameters suitable for the LCD and the FPC are worked out, and the proper placement positions of the LCD and the FPC connector are determined. The FPC adsorption device 7 and the LCD adsorption device 8 respectively adsorb and fix an FPC and an LCD to be detected, the FPC and the LCD are moved above the jig panel 9, and the FPC adsorption device 7 and the LCD adsorption device 8 are driven to move along the length direction of the movable support 5 by the sliding of the support plate 6 on the movable support 5 according to preset position parameters; the first camera 10 in the connecting body 81 is used for shooting the image of the position of the LCD in real time and uploading the image to the industrial personal computer, and whether the current position of the LCD is a qualified position or not is judged by carrying out coincidence comparison on the real-time image of the position of the LCD and preset position parameters. Aligning the position of the FPC while aligning the position of the LCD, shooting an image of the position of the FPC connector in real time by using a second camera 93, uploading the image to an industrial personal computer, judging whether the current position of the FPC connector is a qualified position by superposing and comparing the real-time image of the position of the FPC connector with preset position parameters, adjusting the position of the supporting plate 6 on the movable support 5 by sliding to roughly adjust the position of the FPC adsorption device 7 in the horizontal direction, adjusting the relative position 722 of the sliding plate on the connecting plate 721 after adjusting the FPC adsorption device 7 to be right above the FPC limiting unit 91, finely adjusting the position of the FPC in the horizontal direction by adjusting the relative position 722 of the sliding plate, and adjusting the position of the FPC in the circumferential direction by rotating the relative position of the adjusting turntable 73 and the sliding plate 722. When LCD and FPC all are located the within range of predetermineeing the position parameter, control moves movable support 5, drives LCD and FPC wholly along vertical direction downstream to put into LCD spacing unit 92 with LCD, put into FPC spacing unit 91 with FPC. The application provides a smart alignment system can aim at through adjusting LCD and FPC part simultaneously to mutual interference between each step when avoiding the substep adjustment, thereby effectively guarantee the calibration degree of accuracy.

Optionally, the moving support 4 adopts a right-angled triangle structure;

the movable support 4 is a right-angle side of a right-angled triangle, wherein one side of the movable support is connected with an external device and one side of the movable support is connected with the supporting plate 6.

In practical applications, the movable support 4 may take any suitable shape, such as rectangular, arc, etc., and this embodiment provides a preferred shape of the movable support 4, i.e., a right-angled triangle structure. In the triangular structure, the non-common end points of any two sides are connected by the rest side, and the side cannot stretch or bend, so that the distance between the non-common end points is fixed, the included angle between any two sides is fixed, and the triangular structure cannot deform and is stable in structure. The lower end of the movable support 4 needs to be loaded with a plurality of structures, such as a support plate 6, an FPC adsorption device 7, an LCD adsorption device 8, a jig panel 9 and the like, and each part of the structure is provided with a plurality of complex components, so that the movable support 4 has heavy load and is very easy to bend and deform, the relative positions of all parts of the load on the movable support 4 are changed, errors are generated in the alignment position, and the alignment accuracy is reduced. Adopt stable triangle-shaped structure, and follow overall structure's trend, adopt one side of being connected with external device and the one side of being connected with backup pad 6 to be the both sides of triangle-shaped, form natural right angle limit, effectively resist heavy burden deformation, guarantee the degree of accuracy of alignment process.

In order to ensure the alignment accuracy of the LCD module, it is necessary to ensure that the LCD cannot tilt during the process of adsorption and alignment, and the adsorption position of the suction cup 85 also needs to be adapted to the LCD of different models. Therefore, it is required that the position of the suction cup 85 is adjustable, and that the suction cups 85 are symmetrically and uniformly distributed on the surface of the LCD to prevent the LCD from tilting due to the deviation of the suction position.

As shown in fig. 7(1) - (7) (3), this embodiment provides three structures of the storage tray 82, and four positioning slots 83 are disposed on the storage tray 82;

the positioning slots 83 are radially arranged towards four corners of the object placing disc 82 by taking the geometric center of the object placing disc 82 as a center;

two adjacent positioning grooves 83 are in mirror symmetry by taking the geometric center line of the positioning groove 83 as an axis;

the two opposite positioning grooves 83 are centrosymmetric by taking the geometric center of the positioning groove 83 as the center.

Before adsorption, the LCD needs to be marked, the position of the LCD mark point is obtained in real time by using the first camera 10, and when the LCD mark point reaches the preset position, the LCD is adsorbed and fixed. Before the adsorption, the height of the connecting rods 84 is firstly adjusted to make the plane formed by each sucker 85 parallel to the plane of the jig panel 9, and then the plane position of each connecting rod 84 is adjusted to make each connecting rod 84 evenly and symmetrically distributed on the LCD. As shown in fig. 7(1), the positioning slots 83 are straight-sided strips, the positions of the suckers 85 are arranged according to the LCD size obtained in advance, and the distance from the connecting rod 84 to the geometric center of the object tray 82 is adjusted in each positioning slot 83 according to the distribution distance, so as to adjust the suckers 85 to be evenly distributed on the LCD. In the two structures of the object tray 82 provided in fig. 7(2) and fig. 7(3), through the bending structure of the positioning groove 83 itself, when the connecting rod 84 is adjusted, one bending position can be taken as a node, and the four connecting rods 84 are adjusted to the same node, so that the uniform and symmetrical distribution of the suction cups 85 on the LCD can be ensured, the time and effort for calculating and adjusting the distance are saved, the adjustment efficiency is effectively improved, and the alignment accuracy is ensured.

LCD and FPC are accurate subassembly, in case take place hard extrusion, very easily cause the damage that can't repair. Therefore, the suction nozzle 77 and the suction cup 85 are made of rubber.

The suction nozzle 77 and the suction disc 85 are respectively fixed with the FPC and the LCD in an adsorption manner, although the suction nozzle 77 and the suction disc 85 are leveled in advance, the length of the suction nozzle 77 or the suction disc 85 at a certain position is inevitably changed in the moving process, the surface of the LCD or the FPC inclines or fluctuates, if the situation is found out not timely, the part which is firstly contacted with the jig panel 9 is easy to be extruded and damaged, but the rubber material can play a natural buffer role by virtue of the soft characteristic of the rubber material, the suction disc 85 or the suction nozzle 77 is made of the rubber material, which is equivalent to a buffer part, the part which is firstly contacted with the jig panel 9 can generate a contraction effect, the damage of subsequent extrusion force to the FPC and the LCD is relieved, enough positions are reserved for the rest parts to continuously descend to the jig panel 9, so that the extrusion force to the LCD or the FPC can not be generated, and the integrality of the, and the subsequent detection work is ensured to be carried out smoothly.

Utilize LCD adsorption equipment 8 and FPC adsorption equipment 7 to put into LCD spacing unit 92 and FPC spacing unit 91 smoothly through adsorbing fixed LCD and FPC with both, the external check out test set of intercommunication detects, after the detection, adsorb LCD and FPC through LCD adsorption equipment 8 and FPC adsorption equipment 7 and take out. However, if the suction device is misaligned or fails, the LCD and the FPC cannot be removed.

As shown in fig. 8, in the precise alignment system provided in this embodiment, a first pick-and-place groove 912 and a second pick-and-place groove 922 are respectively disposed on the FPC limiting unit 91 and the LCD limiting unit 92;

the first pick-and-place groove 912 is arranged at the edge of the FPC limiting unit 91 and is recessed towards the inside of the FPC limiting unit 91; the second picking and placing groove 922 is disposed at an edge of the LCD limiting unit 92 and is recessed toward the inside of the LCD limiting unit 92.

The FPC and the LCD can be taken out by hands or other prying equipment through the first taking and placing groove 912 and the second taking and placing groove 922, and the edges of the FPC limit unit 91 and the LCD limit unit 92 which are matched with the periphery of the FPC and the LCD are prevented from being pried, so that the structure of the equipment is prevented from being damaged. The groove of getting that this embodiment provided can effectively solve the adsorption equipment inefficacy and produce can't take out the problem of LCD and FPC, the life of extension equipment simultaneously.

As shown in fig. 8, the LCD position-limiting unit 92 is divided into an upper layer and a lower layer, and the size of the upper layer of the LCD position-limiting unit 92 is larger than the size of the lower layer of the LCD position-limiting unit 92.

The size of the LCD spacing unit 92 needs to be adapted to the size of the LCD, so the external sizes of the LCD spacing unit 92 and the LCD are relatively close to each other, so that the LCD spacing unit 92 can play a good role in limiting the relative displacement of the LCD, but the close size can hinder the downward moving process of the LCD. When LCD descends to tool panel 9 fast along with LCD adsorption equipment 8, at first through the upper strata of LCD spacing unit 92, the size on this layer is greater than LCD's adaptation size, make LCD can not wipe the edge of touching LCD spacing unit 92 transferring the in-process, can remind LCD to slow down simultaneously and transfer the speed, continue to transfer to the lower floor of LCD spacing unit 92, effectively avoid LCD once to transfer fast to the in-process collision LCD spacing unit 92's of LCD spacing unit 92 bottom edge, guarantee LCD's integrality and testability.

Due to the characteristics of the FPC, the FPC has certain softness, is poor in stiffness and is easy to deform in the fixing process, so that the FPC needs to be supported, the relative position and the shape of the FPC can be effectively guaranteed not to change, and the alignment accuracy is guaranteed. As shown in fig. 10, a supporting member 9111 is disposed at the edge of the bend of the FPC type groove 911.

There is the flexion when FPC places, the phenomenon of wrinkling appears easily in the flexion, and support piece 9111 provides good holding power and certain clamp force for FPC for the crooked support piece of adaptation FPC radian this moment, improves the spacing effect of FPC spacing unit 91. Moreover, the supporting piece 9111 is arc-shaped, and the arc-shaped surface of the supporting piece 9111 can well disperse the deformation force of the FPC, so that the structure of the supporting piece 9111 has stability, and the structure of the FPC cannot be damaged while the FPC is supported.

As shown in fig. 9, the FPC spacing unit further includes: an FPC pressure bonding plate 94; the FPC crimping plate 94 includes a clamping groove 95 and a pressing member 951 embedded in the clamping groove 95; the card slot 95 is correspondingly disposed above the pin slot 913, and the inner dimension of the card slot 95 is larger than the outer dimension of the pin slot 913; the pressing member 951 is correspondingly arranged above the concave part of the pin slot 913.

Stitch groove 913 can be for the spill structure, has trilateral baffle can inject the position of FPC connector, the FPC connector is put into stitch groove 913 to press close to with stitch groove 913's spill structure mutually, if stitch groove 913's size is too big than the size of FPC connector, then relative displacement takes place for the FPC connector in stitch groove 913 easily, can even take FPC to take place relative displacement in FPC type groove 911, thereby influence the counterpoint degree of accuracy, also influence subsequent testing result. After setting up FPC pressure strip 94, FPC pressure strip 94 passes through hinge or screw upset and connects in the tool panel 9 department at FPC spacing unit 91 place, after the FPC connector gets into pin groove 913, upset FPC pressure strip 94 falls to tool panel 9 on, make and compress tightly a 951 and can sticis on the FPC connector, draw-in groove 95 can tightly detain pin groove 913 simultaneously, through compressing tightly the restriction FPC connector, make what the FPC connector can be firm hug closely in pin groove 913, effectively restrict FPC connector and FPC and take place relative displacement, guarantee alignment accuracy.

As shown in fig. 8, the LCD unit 92 has a suction plate 921 inside.

Place in LCD spacing unit 92 when LCD, open adsorption plate 921, adsorption plate 921 can be the vacuum adsorption board, utilizes the adsorption of adsorption plate 921, and each adsorbs hole 9211 combined action, firmly adsorbs LCD to fix in LCD spacing unit 92, improves LCD spacing unit 92's limiting displacement, prevents that LCD from taking place relative displacement, guarantees going on smoothly of follow-up detection work.

According to the above technical scheme, the present application provides a smart counterpoint system of LCD module, includes: the device comprises a movable support 5, a support plate 6, an FPC adsorption device 7, an LCD adsorption device 8, a jig panel 9 and a first camera 10;

the FPC adsorption device 7 and the LCD adsorption device 8 are arranged on the outer wall of the side surface of the supporting plate 6 along the length direction of the supporting plate 6 and are in sliding connection with the movable support 5 through the supporting plate 6;

the FPC adsorption device 7 comprises a fixed plate 71, a moving body 72, a turntable 73, a suspension arm 74, a storage rack 75, a support rod 76 and a suction nozzle 77;

the turntable 73 and the fixed plate 71 are connected by the moving body 72, and the fixed plate 71 is fixed on the support plate 6; the moving body 72 comprises a connecting plate 721 and a sliding plate 722, one side of the connecting plate 721 is fixed on the fixed plate 71, the other side is connected with the sliding plate 722 in a sliding way, and the sliding plate 722 is connected with the turntable 73 in a rotating way; the rack 75 and the rotary table 73 are suspended and fixed through the suspension arm 74; the support bar 76 is fixed on the shelf 75, and a suction nozzle 77 is arranged at one end close to the jig panel 9;

the LCD adsorption device 8 includes: a connecting body 81, a first camera 10, a storage tray 82, a connecting rod 84 and a suction cup 85;

the object placing plate 82 is fixed on the supporting plate 6 through the connecting body 81; the connecting body 81 is a hollow structure, and the first camera 10 is disposed in the connecting body 81 and faces the jig panel 9; the connecting rod 84 is inserted in the article placing disc 82, and a suction disc 85 is arranged at one end close to the jig panel 9;

the jig panel includes: the FPC limiting unit 91 and the LCD limiting unit 92 are respectively and correspondingly arranged below the FPC adsorption device 7 and the LCD adsorption device 8;

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. The utility model provides a smart counterpoint system of LCD module which characterized in that includes: the device comprises a movable support, a support plate, an FPC adsorption device, an LCD adsorption device, a jig panel and a first camera;

the FPC spacing unit includes: the device comprises a pin groove, an FPC type groove and a second camera, wherein the pin groove and the FPC type groove are of concave structures;

four positioning grooves are arranged on the object placing plate;

2. The precise alignment system according to claim 1, wherein the movable support is in a right-angled triangle structure;

3. The precise alignment system according to claim 1, wherein the suction nozzle and the suction cup are made of rubber materials.

4. The precise alignment system according to claim 3, wherein the FPC limit unit and the LCD limit unit are respectively provided with a first pick-and-place groove and a second pick-and-place groove;

5. The precise alignment system according to claim 4, wherein the LCD spacing unit is divided into an upper layer and a lower layer, and the upper layer of the LCD spacing unit is larger than the lower layer of the LCD spacing unit.

6. The precise alignment system of claim 5, wherein a support member is disposed at the edge of the bend of the FPC-type groove.

7. The precision alignment system of claim 6, wherein the FPC positioning unit further comprises: an FPC compression joint plate;

the FPC compression joint plate comprises a clamping groove and a compression piece embedded in the clamping groove; the clamping groove is correspondingly arranged above the pin groove, and the inner size of the clamping groove is larger than the outer size of the pin groove;

the pressing piece is correspondingly arranged above the sunken part of the pin groove.

8. The precise alignment system according to claim 7, wherein an absorption plate is disposed inside the LCD spacing unit.