A lighting device for liquid crystal screen detection

Abstract

The present invention relates to a lighting device for liquid crystal screen detection, comprising: two carrier seats, an XY moving component is arranged between the two carrier seats, a stage is carried between the upper ends of the two carrier seats, a vacuum pumping hole is arranged on the stage, and a flip-up cover plate is connected to one side of the stage. A jack is arranged on the back of the stage, and a plugging and unplugging fixture component is arranged on the XY moving component. The lighting device for liquid crystal screen detection provided by the present invention can automatically perform plugging and lighting after automatic vacuum pumping, and can automatically convert the screen angle, without manual operation throughout the process, which not only has high efficiency but also low cost.

Description

Technical Field

[0001] The present invention relates to the field of liquid crystal screen manufacturing, and particularly to a lighting device for liquid crystal screen detection. Background Art

[0002] With the development of the information industry, the demand for liquid crystal display screens has been continuously rising. On the one hand, people have more stringent control over the quality of liquid crystal screens; on the other hand, the intensity of industry competition is also increasing day by day. It has become particularly important to improve production efficiency and product quality and reduce production costs. However, the production process of liquid crystal screens is extremely complex, and the requirements for the production environment are also very strict. Under the current screen production process, the existence of defects is inevitable. Therefore, it is very necessary and crucial to conduct strict inspections on them before leaving the factory.

[0003] Detecting backlight foreign matter defects and scratches is an essential item in the detection. The existing detection method is that manually place the screen on the vacuum table for vacuum coating, then manually plug in and light it, and then conduct corresponding inspections. This method not only has low efficiency but also high labor costs. Summary of the Invention

[0004] To solve the problems of low efficiency and high cost in the existing liquid crystal screen defect detection, the technical solution adopted by the present invention is: a lighting device for liquid crystal screen detection, including: two carrier seats, an XY moving component is provided between the two carrier seats, a stage is carried between the upper ends of the two carrier seats, the stage is provided with vacuum pumping holes, and a flipable cover plate is connected to one side of the stage. There is a jack on the back of the stage, and a plugging and unplugging fixture component is provided on the XY moving component.

[0005] Further improved, the cover plate includes a frame and a film provided in the frame.

[0006] Further improved, a cover plate driving device is provided on the cover plate and / or the stage.

[0007] Further improved, a product groove is provided on the stage, and the product groove is used to place the liquid crystal screen.

[0008] Further improved, both sides of the stage are rotatably connected to the carrier seats, and a rotation driving device for driving the stage to rotate is provided on the carrier seats.

[0009] Further improved, the plugging and unplugging fixture component includes a lifting driving device and a fixture body, and the lifting driving device is connected to the fixture body.

[0010] Further improved, the fixture body includes: a base, a first compensating member, a second compensating member, and a plugging and unplugging guiding seat. A first guide rod is provided on the base. A flange on one side of the first compensating member is sleeved on the first guide rod, and springs sleeved on the first guide rod are provided on both sides of the flange. A second guide rod is provided on the other side of the first compensating member. Both ends of the second compensating member are sleeved on the second guide rod, and a spring is sleeved on the second guide rod. The plugging and unplugging guiding seat is disposed on the second compensating member.

[0011] Further improved, the plugging and unplugging guiding seat is provided with two guiding plates, and the inner side of the upper part of the guiding plate has a guiding inclined surface.

[0012] The beneficial effects of the present invention are:

[0013] The lighting device for liquid crystal screen detection provided by the present invention can automatically plug in and light up after automatically evacuating the air, and can automatically convert the screen angle. The whole process does not require manual operation, which is not only highly efficient but also low in cost. Description of the Drawings

[0014] The present invention will be further described below in conjunction with the drawings and embodiments.

[0015] Figure 1 is a front structural schematic diagram of the lighting device for liquid crystal screen detection of the present invention;

[0016] Figure 2 is a top structural schematic diagram of the lighting device for liquid crystal screen detection of the present invention;

[0017] Figure 3 is a side structural schematic diagram of the lighting device for liquid crystal screen detection of the present invention;

[0018] Figure 4 is a structural schematic diagram of the lighting device for liquid crystal screen detection of the present invention;

[0019] Figure 5 is a structural schematic diagram of the fixture body of the present invention;

[0020] Figure 6 is a front structural schematic diagram of the fixture body of the present invention. Detailed Description of the Invention

[0021] Now, the present invention will be further described in detail in conjunction with the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0022] In the description of the invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the invention.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the invention, "a plurality of" means two or more unless otherwise specifically defined.

[0024] In the invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0025] As Figures 1 to 4 shown, a lighting device for liquid crystal screen detection provided by the present invention includes: two carrier seats 1, the two carrier seats 1 are vertically fixedly installed opposite to each other on a fixed plane, an XY moving component 2 is provided between the two carrier seats 1, both ends of the XY moving component 2 are fixedly installed on a carrier seat 1 respectively, and the XY moving component 2 can complete the movement in two perpendicular directions on a plane under the cooperation of a conventional slide rail and a motor, or under the cooperation of a lead screw and a motor. A stage 3 is carried between the upper ends of the two carrier seats 1, the stage 3 is used to carry the liquid crystal screen, the stage 3 is provided with vacuum pumping holes, and a flip - up cover plate 4 is connected to one side of the stage 3 for covering the liquid crystal screen. A jack is provided on the back of the stage 3, and the jack corresponds to the power supply and signal connection points of the screen. An insertion and extraction jig component 5 is provided on the XY moving component 2, and the XY moving component 2 is used to drive the insertion and extraction jig component 5 to move.

[0026] When the device is working, first place the product (liquid crystal screen) on the stage 3, cover it with the cover plate 4, and the vacuum extraction holes on the stage 3 start to extract vacuum so that the cover plate closely adheres to the product. The XY moving component 2 drives the plug-in jig component 5 to move to the corresponding position of the jack on the stage 3, and then the jig body 52 rises to supply power and corresponding signals to the product through the jack. There is a corresponding vacuum seal at the jack, and then other detection devices perform corresponding screen defect detection.

[0027] The lighting device for liquid crystal screen detection provided by the present invention can automatically extract vacuum, automatically plug in and light up, and can automatically convert the screen angle. The whole process does not require manual operation, which is not only highly efficient but also low in cost.

[0028] As Figure 1 shown, it is further improved that the cover plate 4 includes a frame 41 and a film 42 provided in the frame 41. The frame 41 is used to fix the film 42, and the film 42 will closely adhere to the screen surface during the vacuum extraction process of the device.

[0029] As Figure 1 and Figure 3 shown, in order to realize all automatic operations of the device, this technical solution is further improved that a cover plate driving device 6 is provided on the cover plate 4 and / or the stage 3. Through the cover plate driving device 6, the automatic opening and closing of the cover plate 4 is realized, and the working efficiency of the device is further improved. Among them, the cover plate driving device 6 can adopt a cylinder or a motor, and a cylinder is adopted in this embodiment.

[0030] As Figure 3 shown, in order to realize the automatic opening and closing of the cover plate 4, in this embodiment, one side of the cover plate 4 is connected to the stage 3 through a hinge. At the same time, the cover plate driving device 6 is fixedly installed at the bottom of the stage 3 and is connected to the hinge side of the cover plate 4 through a connecting rod 8. One end of the connecting rod 8 is connected to the cover plate 4, and the other end is connected to the output end of the cover plate driving device 6 through a waist-shaped hole. The middle part of the connecting rod 8 is connected to the stage 3 through a rotating shaft, and the included angle between the two ends of the connecting rod 8 is greater than 90°. As the output end of the cover plate driving device 6 extends, the cover plate 4 completes the covering action, and when the output end of the cover plate driving device 6 retracts, the cover plate 4 opens.

[0031] As Figure 2 shown, it is further improved that a product slot 32 is provided on the stage 3. The product slot 32 is used to place the liquid crystal screen. At the same time, the vacuum extraction holes are arranged in the product slot 32, and a protruding bearing member is provided in the product slot 32, so that there is a gap between the lower surface of the product and the bottom of the product slot 32, which is convenient for vacuum extraction. The bearing member therein can be a protruding dot matrix, a protruding strip-shaped bearing member, or other protruding bearing members with regular or irregular shapes.

[0032] As Figure 2As shown, at the same time, an avoidance groove 33 is provided beside the product groove 32 to facilitate the avoidance of the product during handling.

[0033] As Figure 1 shown, it is further improved that both sides of the carrier 3 are rotatably connected to the bearing seat 1 through rotating shafts, and a rotating driving device 7 for driving the carrier 3 to rotate is provided on the bearing seat 1. Since the detection result at a single angle is not accurate when performing screen defect detection, in this technical solution, in order to improve the detection accuracy, the carrier 3 is driven to rotate by the rotating driving device 7, thereby realizing multi-angle detection of the product and improving the accuracy of screen defect detection.

[0034] It is further improved that the plug-in jig assembly 5 includes a lifting driving device 51 and a jig body 52, and the lifting driving device 51 is connected to the jig body 52.

[0035] As Figure 5 and Figure 6 shown, since the movement precision of the XY moving assembly and its manufacturing precision will cause a deviation between its moving position and the preset position, and at the same time, the product placement position may also have some deviation from the preset position, and these deviations will cause the plug-in guiding seat 524 on the jig to be unable to be inserted smoothly. To solve this problem, this technical solution is further improved as follows: the jig body 52 includes a base 521, a first compensating member 522, a second compensating member 523, and a plug-in guiding seat 524. A first guide rod 525 is provided on the base 521. In this embodiment, the two first guide rods 525 are arranged in parallel. A flange 5221 on one side of the first compensating member 522 is sleeved on the first guide rod 525, so that the first compensating member 522 can move along the first guide rod 525, and springs 5251 sleeved on the first guide rod 525 are provided on both sides of the flange 5221. A second guide rod 526 is provided on the other side of the first compensating member 522. In this embodiment, the two second guide rods 526 are also arranged in parallel. Both ends of the second compensating member 523 are sleeved on the second guide rod 526, so that the second compensating member 523 can move along the second guide rod 526. The first guide rod 525 is perpendicular to the second guide rod 526, and a spring 5261 is sleeved on the second guide rod 526. The plug-in guiding seat 524 is arranged on the second compensating member 523. During the upward insertion process of the plug-in guiding seat 524, the spring 5251 will correct the position of the first compensating member 522 left and right, so that the plug-in guiding seat 524 can be inserted smoothly.

[0036] As Figure 6As shown in the figure, it is further improved that the plug-in guiding seat 524 is provided with two guiding plates 5241, and the inner sides of the upper parts of the guiding plates 5241 have guiding inclined surfaces 5242. When the jig body 52 is lifted and inserted upward, with the guiding action of the guiding inclined surfaces, the first compensating member 522 automatically makes a lateral position adjustment under the action of the spring 5251.

[0037] Enlightened by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A lighting device for liquid crystal screen detection, characterized in that, Comprising: Two carrier seats, an XY moving assembly is provided between the two carrier seats, a stage is carried between the upper ends of the two carrier seats, vacuum extraction holes are provided on the stage, and a flip-up cover plate is connected to one side of the stage. The cover plate includes a frame and a film provided in the frame; a jack is provided on the back of the stage, and a corresponding vacuum seal is provided at the jack. An insertion and extraction jig assembly is provided on the XY moving assembly; the insertion and extraction jig assembly includes a lifting drive device and a jig body, and the lifting drive device is connected to the jig body; the XY moving assembly drives the insertion and extraction jig assembly to move to a position corresponding to the jack on the stage, and the jig body rises to supply power and corresponding signals to the product through the jack; the jig body includes: a base, a first compensating member, a second compensating member, and an insertion and extraction guide seat. A first guide rod is provided on the base, and the two first guide rods are arranged in parallel. A flange on one side of the first compensating member is sleeved on the first guide rod, so that the first compensating member can move along the first guide rod, and springs sleeved on the first guide rod are provided on both sides of the flange. A second guide rod is provided on the other side of the first compensating member, and the two second guide rods are arranged in parallel. Both ends of the second compensating member are sleeved on the second guide rod, so that the second compensating member can move along the second guide rod. The first guide rod is perpendicular to the second guide rod, and a spring is sleeved on the second guide rod. The insertion and extraction guide seat is arranged on the second compensating member; during the upward insertion of the insertion and extraction guide seat, the spring corrects the position of the first compensating member left and right, so that the insertion and extraction guide seat is inserted smoothly.

2. The lighting device for liquid crystal screen detection according to claim 1, characterized in that, A cover plate drive device is provided on the cover plate and / or the stage.

3. The lighting device for liquid crystal screen detection according to claim 1, characterized in that, A product groove is provided on the stage, and the product groove is used for placing a liquid crystal screen.

4. The lighting device for liquid crystal screen detection according to claim 1, characterized in that Both sides of the stage are rotatably connected to the carrier seats, and a rotation drive device for driving the stage to rotate is provided on the carrier seats.

5. The lighting device for liquid crystal screen detection according to claim 1, characterized in that, The insertion and extraction guide seat is provided with two guide plates, and the inner sides of the upper parts of the guide plates have guide inclined surfaces.

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