阅读说明：本技术 一种显示屏内部电路检测装置 (Display screen internal circuit detection device ) 是由 罗炳军 余德梅 陈东海 于 2019-10-15 设计创作，主要内容包括：本发明涉及显示屏检测技术领域,公开了一种显示屏内部电路检测装置,包括显示器、检测组件和上下料组件；所述检测组件包括底座、设置于所述底座上的检测平台、滑动于所述底座两侧的顶盖、用于扫描显示屏内部电路的扫描激光器和驱动所述扫描激光器滑动于所述顶盖的驱动机构,且所述扫描激光机高度可调节地连接所述驱动机构,所述顶盖的滑动方向与所述扫描激光器的滑动方向相垂直；所述上下料机构包括机械手和用于输送显示屏的传送带,所述机械手安装在所述底座上,将所述传送带上的显示屏搬运至所述检测平台；所述扫描激光器与所述显示器电连接。本发明使扫描激光器具有X、Y、Z三向全局扫描检测功能,提高了检测质量及精度,也提高了检测效率。(The invention relates to the technical field of display screen detection, and discloses a display screen internal circuit detection device, which comprises a display, a detection assembly and a feeding and discharging assembly, wherein the detection assembly comprises a first detection module and a second detection module; the detection assembly comprises a base, a detection platform arranged on the base, a top cover sliding on two sides of the base, a scanning laser used for scanning an internal circuit of a display screen and a driving mechanism driving the scanning laser to slide on the top cover, the scanning laser is connected with the driving mechanism in a height-adjustable mode, and the sliding direction of the top cover is perpendicular to that of the scanning laser; the loading and unloading mechanism comprises a manipulator and a conveyor belt for conveying a display screen, the manipulator is mounted on the base, and the display screen on the conveyor belt is conveyed to the detection platform; the scanning laser is electrically connected with the display. The invention enables the scanning laser to have X, Y, Z three-direction global scanning detection function, improves the detection quality and precision and also improves the detection efficiency.)

1. The utility model provides a display screen inner circuit detection device which characterized in that: comprises a display, a detection component and a feeding and discharging component;

the detection assembly comprises a base, a detection platform arranged on the base, a top cover sliding on two sides of the base, a scanning laser used for scanning an internal circuit of a display screen and a driving mechanism driving the scanning laser to slide on the top cover, the scanning laser is connected with the driving mechanism in a height-adjustable mode, and the sliding direction of the top cover is perpendicular to that of the scanning laser;

the loading and unloading mechanism comprises a manipulator and a conveyor belt for conveying a display screen, the manipulator is mounted on the base, and the display screen on the conveyor belt is conveyed to the detection platform;

the scanning laser is electrically connected with the display.

2. The device for detecting the internal circuit of the display screen according to claim 1, wherein: guide wheels are arranged on two sides of the lower end of the top cover and driven by a first motor, guide grooves are formed in two sides of the base, which are located on the detection platform, and guide rods are arranged on the top cover corresponding to the guide grooves.

3. The device for detecting the internal circuit of the display screen according to claim 2, wherein: the driving mechanism comprises a screw rod, a second motor and a nut, wherein the screw rod is perpendicular to the guide groove, the second motor drives the screw rod to rotate, the nut is rotatably connected with the screw rod, and the scanning laser is connected with the nut.

4. The device for detecting the internal circuit of the display screen according to claim 3, wherein: the scanning laser is a plurality of, and is a plurality of scanning laser follows the length direction equipartition of silk pole.

5. The device for detecting the internal circuit of the display screen according to claim 1, wherein: the manipulator is provided with a sucker, the sucker comprises a body, and the body is provided with at least one microporous ceramic vacuum device and at least one vibrator.

6. The display screen internal circuit detection device according to any one of claims 1 to 5, characterized in that: the scanning laser comprises a turret base, and a medium-power mirror, a high-power mirror and a low-power mirror which are arranged at the lower end of the turret base.

7. The device for detecting the internal circuit of the display screen according to claim 6, wherein: well times mirror, high power mirror and low power mirror all include the light source and set up the objective in light source the place ahead, the light source with be equipped with first filter between the objective, the light source with be equipped with the bias sheet between the first filter, objective with be equipped with the speculum between the first filter, just the speculum court the objective slope sets up, the place ahead of speculum is equipped with the eyepiece, just the eyepiece with the objective is mutually perpendicular, the speculum with be equipped with the second filter between the eyepiece.

8. The device for detecting the internal circuit of the display screen according to claim 7, wherein: the included angle between the reflector and the objective lens is 30-60 degrees, the correcting sheet, the first filter and the objective lens are parallel to each other, and the eyepiece is parallel to the second filter.

9. The display screen internal circuit detection device according to any one of claims 1 to 5, characterized in that: the manipulator is characterized by comprising a support, wherein one end of the support is connected with the display, the other end of the support is connected with the base, and the support and the manipulator are respectively arranged at two ends of the base.

10. The display screen internal circuit detection device according to any one of claims 1 to 5, characterized in that: the detection platform is provided with at least one limiting block.

Technical Field

The invention relates to the technical field of display screen detection, in particular to a display screen internal circuit detection device.

Background

The inner screen of the mobile phone, the liquid crystal display screen and the like are an upper layer thin film field effect transistor substrate and a lower layer thin film field effect transistor substrate and a color filter substrate, and the liquid crystal circuit is arranged in the mobile phone, along with the development of large screen and flexible display screen, the area of the inner screen and the liquid crystal display screen of the mobile phone is larger and thinner, the inner liquid crystal circuit and the fine circuit around the screen have important influence on the display effect, the display effect of the display is affected by the poor problems of doping of metal particles, insufficient protrusion, IC output circuit defect, bright spots and bright lines caused by circuit scraping in the production process of the thin film field effect transistor substrate and the color filter substrate, therefore, doped metal particles, protrusions, circuit defects and scratches in the internal circuit of the display screen need to be detected, the display effect of the display at the later stage is ensured, and bad products in the display are selected by brushing for repair.

At present, a commonly used display screen internal circuit defect maintenance machine mainly records the appearance of a circuit board into a computer through a camera and XY numerical control movement, and detects the defects of the circuit board through a computer program. However, the method cannot detect the internal circuit of the liquid crystal, is only suitable for surface detection, is usually single-station and non-multiple selection in the detection process, and has the obvious problems of low detection efficiency, poor detection precision and the like; secondly, manual feeding and discharging are needed in the detection process, so that the detection material rate is low; in addition, the feeding and discharging are all made of common rubber type multi-point vacuum suckers, and the problems of scratching, damage and the like often exist in the conveying process.

Disclosure of Invention

In order to solve the technical problems, the invention provides a display screen internal circuit detection device, which improves the detection quality and efficiency, improves the detection precision and avoids the damage of a display screen.

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

a display screen internal circuit detection device comprises a display, a detection assembly and a feeding and discharging assembly;

the detection assembly comprises a base, a detection platform arranged on the base, a top cover sliding on two sides of the base, a scanning laser used for scanning an internal circuit of a display screen and a driving mechanism driving the scanning laser to slide on the top cover, the scanning laser is connected with the driving mechanism in a height-adjustable mode, and the sliding direction of the top cover is perpendicular to that of the scanning laser;

the loading and unloading mechanism comprises a manipulator and a conveyor belt for conveying a display screen, the manipulator is mounted on the base, and the display screen on the conveyor belt is conveyed to the detection platform;

the scanning laser is electrically connected with the display.

Preferably, guide wheels are arranged on two sides of the lower end of the top cover and driven by a first motor, guide grooves are arranged on two sides of the base, which are located on the detection platform, and guide rods are arranged on the top cover corresponding to the guide grooves.

Preferably, the driving mechanism comprises a screw rod vertically arranged with the guide groove, a second motor driving the screw rod to rotate, and a nut rotationally connected with the screw rod, and the scanning laser is connected with the nut.

Preferably, the number of the scanning lasers is multiple, and the multiple scanning lasers are uniformly distributed along the length direction of the filament.

Preferably, the manipulator is provided with a sucker, the sucker comprises a body, and the body is provided with at least one microporous ceramic vacuum device and at least one vibrator.

Preferably, the scanning laser comprises a turret base and a medium power mirror, a high power mirror and a low power mirror which are arranged at the lower end of the turret base.

Preferably, well times mirror, high power mirror and low power mirror all include the light source and set up the objective in light source the place ahead, the light source with be equipped with first filter between the objective, the light source with be equipped with the offset between the first filter, objective with be equipped with the speculum between the first filter, just the speculum court the objective slope sets up, the place ahead of speculum is equipped with the eyepiece, just the eyepiece with objective is mutually perpendicular, the speculum with be equipped with the second filter between the eyepiece.

Preferably, an included angle between the reflector and the objective lens is 30-60 degrees, the correcting sheet, the first filter and the objective lens are parallel to each other, and the eyepiece is parallel to the second filter.

Preferably, the manipulator comprises a support, one end of the support is connected with the display, the other end of the support is connected with the base, and the support and the manipulator are respectively arranged at two ends of the base.

Preferably, at least one limit block is arranged on the detection platform.

Compared with the prior art, the device for detecting the internal circuit of the display screen has the advantages that: the top cover is arranged on the base in a sliding mode, the scanning laser is arranged on the top cover in a sliding mode, the sliding direction of the top cover is perpendicular to the sliding direction of the scanning laser, and the scanning laser is connected with the driving mechanism in a height-adjustable mode, so that the scanning laser is guaranteed to have X, Y, Z three-direction global scanning detection function, and detection quality and accuracy are improved. In addition, through setting up conveyer belt and manipulator, the display screen that awaits measuring passes through the conveyer belt transmission to transport to testing platform through the manipulator, improved detection efficiency. The invention has simple structure, good use effect and easy popularization and use.

Drawings

Fig. 1 is a schematic structural diagram of a display screen internal circuit detection device of the present invention.

Fig. 2 is a schematic structural view of the circular suction cup of the device for detecting an internal circuit of a display screen according to the present invention.

Fig. 3 is a schematic structural view of the display screen internal circuit detection device of the present invention with a square suction cup.

FIG. 4 is a schematic structural diagram of a scanning laser of the device for detecting internal circuits of a display panel according to the present invention.

FIG. 5 is a schematic diagram of the working principle of the scanning laser of the device for detecting the internal circuit of the display panel according to the present invention.

Wherein: 1-display, 2-detection component, 21-base, 211-guide groove, 22-detection platform, 23-top cover, 24-scanning laser, 241-turret base, 242-middle-power lens, 2421-light source, 2422-objective lens, 2423-first filter, 2424-bias sheet, 2425-reflector, 2426-eyepiece, 2427-second filter, 243-high-power lens, 244-low-power lens, 25-guide wheel, 26-guide rod, 3-feeding and discharging component, 31-conveyor belt, 32-manipulator, 33-sucker, 331-body, 332-microporous ceramic vacuum, 333-vibrator, 4-bracket, 5-limit block and 6-display screen.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1, the display screen internal circuit detection apparatus according to the preferred embodiment of the present invention includes a display 1, a detection assembly 2, and a loading and unloading assembly 3;

the detection assembly 2 comprises a base 21, a detection platform 22 arranged on the base 21, a top cover 23 sliding on two sides of the base 21, a scanning laser 24 for scanning an internal circuit of the display screen 6 and a driving mechanism for driving the scanning laser 24 to slide on the top cover 23, wherein the scanning laser 24 is connected with the driving mechanism in a height-adjustable manner, and the sliding direction of the top cover 23 is perpendicular to that of the scanning laser 24;

the loading and unloading mechanism 3 comprises a manipulator 32 and a conveyor belt 31 for conveying the display screen 6, wherein the manipulator 32 is installed on the base 21 and conveys the display screen 6 on the conveyor belt 31 to the detection platform 22;

the scanning laser 24 is electrically connected with the display 1, and the detection result of the scanning laser 24 is directly displayed on the display 1.

According to the display screen internal circuit detection device based on the technical characteristics, the top cover 23 is arranged on the base 21 in a sliding mode, the scanning laser 24 is arranged on the top cover 23 in a sliding mode, the sliding direction of the top cover 23 is perpendicular to the sliding direction of the scanning laser 24, and meanwhile the scanning laser 24 is connected with the driving mechanism in a height-adjustable mode, so that the scanning laser 24 is guaranteed to have X, Y, Z three-direction global scanning detection function, and the detection quality and the detection precision are improved. In addition, through setting up conveyer belt 31 and manipulator 32, the display screen 6 that awaits measuring passes through conveyer belt 31 transmission to carry testing platform through manipulator 32, improved detection efficiency. The invention has simple structure, good use effect and easy popularization and use.

In this embodiment, guide wheels 25 are disposed on two sides of the lower end of the top cover 23, the guide wheels 25 are driven by a first motor, guide grooves 211 are disposed on two sides of the base 21, which are located on the detection platform 22, and guide rods 26 are disposed on the top cover 23, which correspond to the guide grooves 211. The first motor drives the top cover 23 to move, and meanwhile, under the action of the guide groove 211 and the guide rod 26, the moving direction of the top cover 23 is ensured, and the situation that the position of the top cover 23 deviates in the moving process to influence the detection result is avoided. In addition, in order to ensure that the sliding direction of the scanning laser 24 along the top cover 23 is perpendicular to the sliding direction of the top cover 23 along the base 21, the driving mechanism comprises a screw rod which is perpendicular to the guide groove 211, a second motor which drives the screw rod to rotate and a nut which is rotationally connected with the screw rod, and the scanning laser 24 is connected with the nut. When the scanning laser 24 slides, the second motor is started to drive the screw rod to rotate, and the nut moves along the screw rod, so that the scanning laser 24 moves.

In addition, since the scanning laser 24 needs to be connected to the driving mechanism with adjustable height to realize adjustment of the scanning laser in the Z-axis direction, the nut and the scanning laser 24 may be connected by an air cylinder, a hydraulic cylinder, or the like, or may be connected by a gear structure or a sprocket mechanism in actual connection. Since these are prior art, they will not be described in detail here.

In this embodiment, to further improve the detection efficiency, the number of the scanning lasers 24 is plural, and preferably three. A plurality of scanning laser 24 is followed the length direction equipartition of silk pole to realized simultaneously detecting the same position of a plurality of display screens 6, improved detection efficiency.

Referring to fig. 2-3, in the present embodiment, a suction cup 33 is disposed on the manipulator 32, the suction cup 33 includes a body 331, at least one microporous ceramic vacuum 332 and at least one vibrator 333 are disposed on the body 331, the vibrator 333 is preferably an ultrasonic vibrator, and the vibrator 333 is disposed outside the microporous ceramic vacuum 332. Because in the adsorption process, if the surface of the display screen 6 is moist or has static electricity, the adsorption of the display screen 6 is easy to realize once the influence detection of the display screen 6 overlapped by a plurality of pieces, even the damage caused by the automatic separation of some display screens 6 in the carrying process can be generated, and through the arrangement of the vibrator 333, the adsorption is carried out by a plurality of vibrators 333 which work sequentially and then work integrally, so that the effective separation of the display screen 6 can be realized. In addition, the problems of scratching, damaging the display screen 6 and the like often exist in the common rubber type multipoint vacuum suction conveying process, and the problems can be reduced or eliminated by adopting the microporous ceramic vacuum suction disc. The micro-porous ceramic vacuum 332 can provide a uniform suction force and a supporting force in a large area, and reduce the damage of the workpiece caused by stress concentration. In practical use, the body 331 and the microporous ceramic vacuum device 332 can be set to be round, square or other irregular shapes, and the sizes can be changed as required, so that a plurality of microporous ceramic vacuum devices 332 can stably adsorb a large workpiece or a plurality of microporous ceramic vacuum devices can adsorb a plurality of small workpieces.

Referring to fig. 4-5, in the present embodiment, the scanning laser 24 includes a turret base 241, and a medium-power mirror 242, a high-power mirror 243, and a low-power mirror 244 disposed at a lower end of the turret base 241. When the circuit inside the display screen 6 is too fine and cannot be observed by using the low power mirror 244, the damage defect of the fine structure can be observed by switching to the medium power mirror 242 or the high power mirror 243. Therefore, the medium power mirror 242, the high power mirror 243 and the low power mirror 244 have the same structure, and only the parameters such as the spacing, the thickness and the like of the lenses constituting them are different. Specifically, each of the medium-power mirror 242, the high-power mirror 243 and the low-power mirror 244 includes a light source 2421 and an objective lens 2422 disposed in front of the light source 2421, a first filter 2423 is disposed between the light source 2421 and the objective lens 2422, a bias sheet 2424 is disposed between the light source 2421 and the first filter 2423, a reflector 2425 is disposed between the objective lens 2422 and the first filter 2423, and the reflector 2425 is disposed in an inclined manner toward the objective lens 2422, specifically, an included angle between the reflector 2425 and the objective lens 2422 is 30-60 degrees. An ocular 2426 is arranged in front of the reflector 2425, the ocular 2426 is perpendicular to the objective 2422, and a second filter 2427 is arranged between the reflector 2425 and the ocular 2426. The polarization sheet 2424, the first filter 2423 and the objective lens are parallel to each other, and the eyepiece 2426 is parallel to the second filter 2423.

When the laser scanning device works, the light source 2421 generates laser, after the correction and the filtering are carried out through the bias sheet 2423 and the first filter 2423, the objective 2422 focuses the light spot laser into linear laser scanning, the focusing position can be adjusted according to the distance between a circuit inside the display screen 6 and the surface of the display screen 6 through software and programming, the nondestructive detection of the circuit inside the display screen 6 is realized, the scanned light passes through the reflector 2425 and is filtered through the second filter 2427, and finally the circuit inside the display screen 6 and the surface structure are clearly imaged on the eye lens 2426 or displayed on the display 1.

In this embodiment, the device for detecting the internal circuit of the display screen further includes a support 4, one end of the support 4 is connected to the display 1, the other end of the support 4 is connected to the base 21, and the support 4 and the manipulator 32 are respectively disposed at two ends of the base 21.

In this embodiment, the detection platform 22 is provided with at least one limiting block 5. Through setting up stopper 5, manipulator 32 carries display screen 6 extremely can pinpoint during testing platform 22, guarantee to detect the precision.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.