Device for detecting panel defects

Abstract

The utility model provides a device for detecting panel defects, and belongs to the technical field of LCD projectors. A device for detecting panel defects comprises a bottom plate module, a backlight plate module, a liquid crystal panel module, a camera module and a support module, the backlight plate module is connected with the bottom plate module, and the liquid crystal panel module and the camera module are connected with the bottom plate module through the support module. The liquid crystal panel module is located between the backlight plate module and the camera module, the backlight plate module comprises a backlight plate, the liquid crystal panel module comprises a liquid crystal panel to be detected, the camera module comprises a camera, and the backlight plate, the liquid crystal panel to be detected and the camera are located on the same axis. According to the utility model, whether the panel has problems can be checked and confirmed without assembling a light incoming machine, so that the maintenance time for repeatedly disassembling the machine is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of LCD projector technology, specifically relating to a device for detecting panel defects. Background Technology

[0002] With the continuous updates and iterations of various projection products on the market, single-panel LCD projectors have broken through the competition due to their absolute price advantage, becoming the best-selling projector product. Given the current high demand in the single-panel LCD market, shortening development cycles and improving production efficiency are crucial.

[0003] The current common method for inspecting panel defects involves using high-powered lights and the human eye to observe surface dust during production, followed by assembling the optical engine and projecting the image to check for issues such as screen flickering, no projection, and vertical lines on the screen. However, the repeated disassembly and reassembly process prolongs repair time due to panel defects. Multiple repairs can lead to stripped threads on the optical engine housing, contamination of internal optical components, and material waste. These problems severely impact production efficiency.

[0004] In summary, for single-panel LCD projection solutions, how to address panel defects before assembly, eliminate the need for multiple repairs, facilitate operation, and improve production efficiency has become a pressing technical challenge for those skilled in the art. Utility Model Content

[0005] In view of this, the technical problem to be solved by this utility model is to provide a device for detecting panel defects, which can check and confirm whether there are problems with the panel without assembling the light source machine, thereby reducing the time spent on repeated disassembly and repair and improving production efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a device for detecting panel defects, comprising: a base plate module, a backlight plate module, a liquid crystal panel module, a camera module, and a bracket module. The backlight plate module includes a backlight plate, the liquid crystal panel module includes a liquid crystal panel to be tested, and the camera module includes a camera. The backlight plate module is connected to the base plate module, and the liquid crystal panel module and the camera module are respectively connected to the base plate module through the bracket module. The liquid crystal panel module is located between the backlight plate module and the camera module, and the backlight plate, the liquid crystal panel to be tested, and the camera are coaxially arranged.

[0007] Optionally, the base plate module includes a base plate, on which multiple threaded holes are provided.

[0008] Optionally, the backlight module further includes: a backlight placement slot for placing the backlight and heat-insulating glass disposed in the backlight placement slot, wherein the backlight placement slot is connected to the base plate by a first screw.

[0009] Optionally, the liquid crystal panel module further includes: a panel placement slot for placing the liquid crystal panel under test, and a panel placement slot support bracket connected to the panel placement slot, wherein the panel placement slot support bracket is connected to the bracket module.

[0010] Optionally, the panel placement slot and the panel placement slot support bracket are connected by a second screw.

[0011] Optionally, the camera module further includes a camera retaining ring connected to the camera, an adapter bracket connected to the camera retaining ring, and a lens support bracket connected to the adapter bracket, wherein the lens support bracket is connected to the bracket module.

[0012] Optionally, the adapter bracket is connected to the lens support bracket via a third screw.

[0013] Optionally, the bracket module includes guide posts and guide post fixing blocks connected to the guide posts. The number of guide posts is at least two. The guide post fixing blocks are connected to the base plate by a fourth screw. The panel placement slot support bracket and the lens support bracket are respectively connected to the guide posts.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model discloses a device for detecting panel defects, which is used to detect defects in LCD panels during operation. It can detect a series of panel problems such as dirt, screen flickering, no projection, and vertical lines on the screen during operation without the need to assemble an optical engine. This reduces the time spent on repeated disassembly and repair due to panel defects and improves production efficiency. Moreover, it can switch between different panel sizes and can be used for LCD products of different sizes. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 : A schematic diagram of the structure of a device for detecting panel defects according to this utility model;

[0018] Figure 2 : Exploded view of a device for detecting panel defects according to this utility model;

[0019] Among them, 100 is the base plate module; 101 is the base plate; and 102 is the threaded hole.

[0020] 200. Backlight panel module; 201. Backlight panel placement slot; 202. Backlight panel; 203. Heat-insulating glass; 204. First screw;

[0021] 300. LCD panel module; 301. LCD panel under test; 302. Panel placement slot; 303. Panel placement slot support bracket; 304. Second screw;

[0022] 400. Camera module; 401. Camera; 402. Lens support bracket; 403. Adapter bracket; 404. Camera retaining ring; 405. Third screw;

[0023] 500, bracket module; 501, guide post; 502, guide post fixing block; 503, fourth screw. Detailed Implementation

[0024] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0025] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed connection, a detachable connection, or an integral part; it may be a direct connection or an indirect connection through an intermediate medium.

[0026] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this utility model.

[0028] Reference Figure 1-2 The present invention relates to a device for detecting panel defects, comprising: a base plate module 100, a backlight plate module 200, an LCD panel module 300, a camera module 400, and a bracket module 500.

[0029] Reference Figure 1-2 The base plate module 100 is used to support the entire device. The bottom module includes a base plate 101, which has four threaded holes 102.

[0030] Reference Figure 1-2 The backlight module 200 is located on the base plate module 100 and includes: a backlight plate placement slot 201, a backlight plate 202, heat-insulating glass 203, and first screws 204. The backlight plate placement slot 201 is fixed to the base plate 101 by four first screws 204. The backlight plate 202 is placed in the backlight plate placement slot 201, and the heat-insulating glass 203 is placed in the built-in slot of the backlight plate placement slot 201. The backlight plate placement slot 201 can accommodate the placement of heat-insulating glass 203 of different sizes. The backlight module 200 has a low brightness and does not generate a lot of heat, ensuring operational safety, and is used to provide a light source for the entire device.

[0031] Reference Figure 1-2 The LCD panel module 300 is located above the backlight module 200 and includes: a liquid crystal panel under test 301, a panel placement slot 302, a panel placement slot support bracket 303, and a second screw 304. The panel placement slot 302 is above the panel placement slot support bracket 303, and the panel placement slot 302 and the panel placement slot 302 are fixed together by the second screw 304. The liquid crystal panel under test 301 is placed in the slot of the panel placement slot 302. The panel placement slot 302 can accommodate liquid crystal panels of different sizes, so the same device can be used to measure liquid crystal panels of different sizes. The polarizing film attached to the liquid crystal panel under test 301 and the polarizing film attached to the heat insulation glass 203 work together to control the passage of light through the liquid crystal rotation effect, thereby realizing image display. When testing LCD panels of different sizes, the heat insulation glass 203 also needs to be replaced to match the deflection angle of the LCD panels of different sizes. This ensures that the polarizer on the heat insulation glass 203 matches the deflection angle of the LCD panel under test, so as to achieve correct image display. If it is not replaced, the angle of polarized light may not match, which will affect the display effect of the image and cause it to fail to display normally.

[0032] Reference Figure 1-2 The camera module 400 is located on top of the LCD panel module 300 and includes: a camera 401, a lens support bracket 402, an adapter bracket 403, a camera retaining ring 404, and a third screw 405. The camera retaining ring 404 holds the camera 401 in place, and the screw secures the camera retaining ring 404 and the adapter bracket 403 together. The lens support bracket 402 and the adapter bracket 403 are fixed together by the third screw 405. The camera 401 is connected to a computer. When the entire device is working, the camera 401 can magnify and display in real time on the computer screen any panel problems found on the LCD panel 301, such as dirt, screen flickering, lack of projection, or vertical lines on the image, facilitating operation.

[0033] Reference Figure 1-2 The bracket module 500 connects the other modules into one unit and includes: two guide posts 501, a guide post fixing block 502, and a fourth screw 503. The bottom of the two guide posts 501 is inserted into the guide post fixing block 502 and fixed to the base plate 101 by the fourth screw 503. The upper part of the two guide posts 501 is connected in sequence to the panel placement slot support bracket 303 and the lens support bracket 402, which connects the entire device together and serves to maintain the spacing between the modules and fix the modules.

[0034] This utility model integrates multiple optical components to fit the optical engine state. The spacing between different modules can be moved as needed. Without assembling the optical engine, it can detect a series of panel problems such as dirt, screen flickering, no projection, and vertical lines on the screen when the panel is working. This reduces the time spent on repeated disassembly and repair due to panel defects, improves production efficiency, and can also switch between different panel sizes, making it suitable for LCD products of different sizes.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for detecting panel defects, characterized in that: include: The system comprises a base plate module, a backlight module, an LCD panel module, a camera module, and a bracket module. The backlight module is connected to the base plate module. The LCD panel module and the camera module are respectively connected to the base plate module through the bracket module. The LCD panel module is located between the backlight module and the camera module. The backlight module includes a backlight plate. The LCD panel module includes an LCD panel under test. The camera module includes a camera. The backlight plate, the LCD panel under test, and the camera are coaxially arranged.

2. The device for detecting panel defects as described in claim 1, characterized in that: The base plate module includes a base plate, on which multiple threaded holes are provided.

3. The device for detecting panel defects as described in claim 2, characterized in that: The backlight module further includes: a backlight placement slot for placing the backlight, and heat-insulating glass disposed in the backlight placement slot, wherein the backlight placement slot is connected to the base plate by a first screw.

4. The apparatus for detecting panel defects as described in claim 3, characterized in that: The liquid crystal panel module further includes: a panel placement slot for placing the liquid crystal panel under test, and a panel placement slot support bracket connected to the panel placement slot, wherein the panel placement slot support bracket is connected to the bracket module.

5. The apparatus for detecting panel defects as described in claim 4, characterized in that: The panel placement slot and the panel placement slot support bracket are connected by a second screw.

6. The apparatus for detecting panel defects as described in claim 5, characterized in that: The camera module further includes: a camera retaining ring connected to the camera, an adapter bracket connected to the camera retaining ring, and a lens support bracket connected to the adapter bracket, wherein the lens support bracket is connected to the bracket module.

7. The apparatus for detecting panel defects as described in claim 6, characterized in that: The adapter bracket and the lens support bracket are connected by a third screw.

8. The apparatus for detecting panel defects as described in claim 7, characterized in that: The bracket module includes guide posts and guide post fixing blocks connected to the guide posts. There are at least two guide posts. The guide post fixing blocks are connected to the base plate by a fourth screw. The panel placement slot support bracket and the lens support bracket are respectively connected to the guide posts.

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