Universal optical test fixture for liquid crystal display module

Abstract

The utility model discloses a universal optical test fixture for a liquid crystal display module, which comprises a rack, a plurality of optical modules, a plurality of optical modules, a plurality of optical modules, a plurality of optical modules and a plurality of optical modules, the adjustable optical probe bracket is arranged on the platform and is close to the display screen bracket; the optical probe is mounted on the adjustable optical bracket and is used for carrying out optical test on the display module; the utility model discloses a liquid crystal display module lightening test jig. When the universal optical test jig for the liquid crystal display module is used, the Y-axis bolt can be opened and locked, so that the Y-axis sliding block can be unlocked and locked, the Z-axis bolt can be opened and locked, the Z-axis sliding block can be unlocked and locked, the X-axis bolt can be opened and locked, and the X-axis sliding block can be unlocked and locked; the optical probe can be adjusted and fixed in the X-axis direction, so that the optical probe can freely move and detect in the X-axis direction, the Y-axis direction and the Z-axis direction on the platform.

Description

Technical Field

[0001] The utility model relates to the technical field of optical testing, and in particular to a universal optical testing fixture for liquid crystal display modules. Background Art

[0002] LCD screens such as flat panel displays, printers, industrial touch screens, and smart screens have been widely used. The main structure of LCD screens is the LCM liquid crystal display module, which includes a liquid crystal glass panel and a backlight module. The backlight module provides light for the liquid crystal glass panel. During the research and development process of the LCM liquid crystal display module, color analysis optical testing is required. The color analyzer is an industrial machine that measures the brightness and chromaticity of the LCM liquid crystal display module, including a color analyzer host and a color analyzer optical probe that is wired to the color analyzer host.

[0003] For example, a Chinese utility model patent (CN214011680U) discloses an optical test device for a liquid crystal display module, including a slide rail bracket, a transverse slide rail seat, a transverse slide bar, a probe fixing mechanism, a color analyzer optical probe and a test bracket; the transverse slide rail seat is installed at the upper end of the slide rail bracket, one end of the transverse slide bar is slidably installed on the transverse slide rail seat, the other end of the transverse slide bar is connected to the probe fixing mechanism, and the color analyzer optical probe is installed on the probe fixing mechanism; the test bracket is arranged below the color analyzer optical probe, and a test platform is arranged on the test bracket, and the test platform is used to place the LCM liquid crystal display module to be tested. The utility model has good stability, convenient movement, convenient testing, and high testing efficiency. However, when the inventor specifically implemented this device, he found the following defects: when adjusting the optical probe, although it can realize the adjustment of the horizontal position, it is difficult to adjust the optical probe in the three-axis direction as a whole, so that the adjustment and fixation of the entire optical probe are not fast and stable enough. Utility Model Content

[0004] Based on this, it is necessary to provide a universal optical test fixture for liquid crystal display modules to address the above technical problems. Through the setting of an adjustable optical probe bracket and an optical probe, the optical probe can be adjusted in three-axis directions during use, and can be effectively locked after adjustment.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A universal optical test fixture for liquid crystal display modules, comprising:

[0007] The frame has a cavity inside and a display screen support and a platform on the top;

[0008] An adjustable optical probe bracket is disposed on the platform and close to the display screen bracket;

[0009] An optical probe, which is mounted on an adjustable optical bracket and is used to perform optical testing on the display module;

[0010] The liquid crystal display module lighting test jig is arranged in the middle of the platform and below the optical probe and is used to fix the liquid crystal display module.

[0011] Furthermore, the adjustable optical probe bracket includes an X-axis adjustment component, a Y-axis adjustment component and a Z-axis adjustment component, wherein the Y-axis adjustment component is connected to the platform, the Z-axis adjustment component is installed at the moving end of the Y-axis adjustment component, and the X-axis adjustment component is connected to the moving end of the Z-axis adjustment component.

[0012] Furthermore, the Y-axis adjustment assembly includes a Y-axis guide rail fixedly connected to the platform and a Y-axis slider slidably connected to the upper surface of the Y-axis guide rail, a Y-axis support is fixedly mounted on the Y-axis slider, a Y-axis bolt is threadedly connected to the Y-axis support, and one end of the Y-axis bolt passes through the Y-axis support and is pressed against the top surface of the platform.

[0013] Furthermore, the Z-axis adjustment assembly includes a Z-axis guide rail fixedly mounted on the outer wall of the Y-axis support and a Z-axis slider slidably connected to the upper surface of the Z-axis guide rail, the Z-axis support is fixedly mounted on the Z-axis slider, the Z-axis support is threadedly connected with a Z-axis bolt, and the Z-axis bolt passes through one end of the Z-axis support and is pressed against the side wall of the Z-axis guide rail.

[0014] Furthermore, the X-axis adjustment assembly includes an X-axis guide rail fixedly mounted on the outer wall of the Z-axis support and an X-axis slider slidably connected to the upper surface of the X-axis guide rail, the X-axis support is fixedly mounted on the X-axis slider, the X-axis support is threadedly connected with an X-axis bolt, and one end of the X-axis bolt passes through the X-axis support and is pressed against the side wall of the X-axis guide rail.

[0015] Furthermore, the optical probe is fixedly connected to the X-axis support via a probe bearing plate, a trapezoidal slot is provided on the probe bearing plate, and a trapezoidal buckle matched with the trapezoidal slot is connected to the optical probe.

[0016] Furthermore, the optical test fixture also includes a display screen and an industrial computer. The optical probe and the display screen are electrically connected to the industrial computer, and the optical probe and the display screen are started by the industrial computer.

[0017] Furthermore, the optical test fixture also includes an adjustable DC power supply, which is electrically connected to the industrial computer, the optical probe and the display screen.

[0018] Furthermore, the industrial computer is detachably mounted on the middle and upper part of the cavity by bolts, and the adjustable DC power supply is detachably mounted on the bottom of the cavity by bolts.

[0019] Furthermore, the display screen is fixedly mounted on the side wall of the display screen bracket by means of bolts, and the display screen is one of a liquid crystal display, a plasma display, a 3D display and a touch screen display.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model provides a universal optical test fixture for liquid crystal display modules. An adjustable optical probe bracket is arranged on a platform to connect the optical probe. When using the device, the Y-axis bolt can be opened and locked to unlock and lock the Y-axis slider, and the optical probe can be adjusted and fixed in the Y-axis direction. The Z-axis bolt can be opened and locked to unlock and lock the Z-axis slider, and the optical probe can be adjusted and fixed in the Z-axis direction. The X-axis bolt can be opened and locked to unlock and lock the X-axis slider, and the optical probe can be adjusted and fixed in the X-axis direction, so that the optical probe can be freely moved and detected in the three-axis directions of X, Y and Z on the platform.

[0022] The optical probe is fixedly connected to the Z-axis support by a probe carrier plate. Since there is a trapezoidal slot in the probe carrier plate and a trapezoidal buckle on the optical probe, the optical probe can be quickly connected to the probe carrier plate, which facilitates the installation and replacement of the optical probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a partial structural schematic diagram of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the adjustable optical probe bracket and the optical probe of the utility model;

[0026] Figure 4 For this utility model Figure 2 Schematic diagram of the disassembled structure of the adjustable optical probe bracket;

[0027] Figure 5 For this utility model Figure 3 Schematic diagram of the disassembled structure of the adjustable optical probe bracket;

[0028] Figure 6 This is a schematic diagram of the disassembled structure of the X-axis adjustment assembly and the probe carrier plate in the utility model;

[0029] Figure 7It is a schematic diagram of the disassembled structure of the X-axis adjustment component in the present utility model.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Rack; 11. Cavity; 12. Display screen bracket; 13. Platform;

[0032] 2. Adjustable optical probe bracket; 21. X-axis adjustment assembly; 211. X-axis guide rail; 212. X-axis slider; 213. X-axis support; 214. X-axis bolt; 22. Y-axis adjustment assembly; 221. Y-axis guide rail; 222. Y-axis slider; 223. Y-axis support; 224. Y-axis bolt; 23. Z-axis adjustment assembly; 231. Z-axis guide rail; 232. Z-axis slider; 233. Z-axis support; 234. Z-axis bolt;

[0033] 3. Optical probe; 31. Probe bearing plate; 311. Trapezoidal slot; 312. Trapezoidal buckle;

[0034] 4. LCD display module lighting test jig;

[0035] 5. Display screen;

[0036] 6. Industrial computers;

[0037] 7. Adjustable DC power supply. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0039] As described in the background art, when adjusting the optical probe, the prior art can adjust the horizontal position, but it is difficult to adjust the optical probe in three-axis directions as a whole, making the adjustment and fixation of the entire optical probe not fast and stable enough.

[0040] In order to solve this technical problem, the utility model provides a universal optical testing fixture for a liquid crystal display module, which is applied to optical testing.

[0041] Specifically, please refer to Figure 1-3 , the universal optical test fixture for LCD modules specifically includes:

[0042] The frame 1 has a cavity 11 inside and a display screen support 12 and a platform 13 on the top;

[0043] An adjustable optical probe support 2, which is arranged on the platform 13 and close to the display screen support 12;

[0044] An optical probe 3, which is mounted on the adjustable optical bracket 2 and is used for performing optical testing on the display module;

[0045] The liquid crystal display module lighting test jig 4 is arranged in the middle of the platform 13 and below the optical probe 3 for fixing the liquid crystal display module.

[0046] The utility model provides a universal optical test fixture for liquid crystal display modules, wherein an adjustable optical probe bracket is arranged on a platform to connect an optical probe. When the device is used, the liquid crystal display module can be fixed by lighting the test fixture 4 by the liquid crystal display module, and the optical probe 3 can be adjusted and fixed in three-axis directions by using the adjustable optical probe bracket 2, thereby realizing free adjustment of the optical probe 3 and locking at any position, thereby facilitating the detection of liquid crystal display modules of different models.

[0047] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0048] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings. Example 1

[0050] Please refer to Figure 1-3 A universal optical test fixture for a liquid crystal display module comprises a frame 1, an adjustable optical probe bracket 2, an optical probe 3 and a liquid crystal display module lighting test fixture 4. The frame 1 has a cavity 11 inside, a display screen bracket 12 and a platform 13 on the top, the adjustable optical probe bracket 2 is arranged on the platform 13 and close to the display screen bracket 12, the optical probe 3 is installed on the adjustable optical bracket 2 for optically testing the display module, and the liquid crystal display module lighting test fixture 4 is arranged in the middle of the platform 13 and below the optical probe 3 for fixing the liquid crystal display module.

[0051] Please refer to Figure 2The adjustable optical probe bracket 2 includes an X-axis adjustment component 21, a Y-axis adjustment component 22 and a Z-axis adjustment component 23, wherein the Y-axis adjustment component 22 is connected to the platform 13, the Z-axis adjustment component 23 is installed at the moving end of the Y-axis adjustment component 22, and the X-axis adjustment component 21 is connected to the moving end of the Z-axis adjustment component 23.

[0052] The universal optical test fixture for liquid crystal display modules provided in this embodiment adopts an X-axis adjustment component 21, a Y-axis adjustment component 22 and a Z-axis adjustment component 23, which are interconnected and independently controlled. Therefore, when adjusting the optical probe 3, the X-axis direction, the Y-axis direction and the Z-axis direction can be adjusted separately, ensuring that the optical probe 3 can perform detection operations at any position. Example 2

[0053] The universal optical test fixture for liquid crystal display modules provided in Example 1 is further optimized. Specifically, Figure 3 , 4 , 5, 6, and 7, the Y-axis adjustment assembly 22 includes a Y-axis guide rail 221 fixedly connected to the platform 13 and a Y-axis slider 222 slidably connected to the upper surface of the Y-axis guide rail 221, a Y-axis support 223 is fixedly mounted on the Y-axis slider 222, a Y-axis bolt 224 is threadedly connected to the Y-axis support 223, and the Y-axis bolt 224 passes through one end of the Y-axis support 223 and is pressed against the top surface of the platform 13.

[0054] The Z-axis adjustment assembly 23 includes a Z-axis guide rail 231 fixedly mounted on the outer wall of the Y-axis support 223 and a Z-axis slider 232 slidably connected to the upper surface of the Z-axis guide rail 231. The Z-axis support 233 is fixedly mounted on the Z-axis slider 232. The Z-axis support 233 is threadedly connected with a Z-axis bolt 234. The Z-axis bolt 234 passes through one end of the Z-axis support 233 and presses against the side wall of the Z-axis guide rail 231.

[0055] The X-axis adjustment assembly 21 includes an X-axis guide rail 211 fixedly mounted on the outer wall of the Z-axis support 233 and an X-axis slider 212 slidably connected to the upper surface of the X-axis guide rail 211, an X-axis support 213 is fixedly mounted on the X-axis slider 212, an X-axis support 213 is threadedly connected to the X-axis bolt 214, and the X-axis bolt 214 passes through one end of the X-axis support 213 and presses against the side wall of the X-axis guide rail 211.

[0056] Specifically, the Y-axis support 223, the X-axis support 213 and the Z-axis support 233 are respectively provided with threaded holes corresponding to the Y-axis bolt 224, the X-axis bolt 214 and the Z-axis bolt 234, and the end of the Y-axis bolt 224, the X-axis bolt 214 and the Z-axis bolt 234 also has a handle, which facilitates personnel to rotate the Y-axis bolt 224, the X-axis bolt 214 and the Z-axis bolt 234.

[0057] Through the above-mentioned structural design, the Y-axis bolt 224 can be opened and locked to unlock and lock the Y-axis slider 222, and the optical probe 3 can be adjusted and fixed in the Y-axis direction. The Z-axis bolt 234 can be opened and locked to unlock and lock the Z-axis slider 232, and the optical probe 3 can be adjusted and fixed in the Z-axis direction. The X-axis bolt 214 can be opened and locked to unlock and lock the X-axis slider 212, and the optical probe 3 can be adjusted and fixed in the X-axis direction, so that the optical probe 3 can be freely moved and detected in the three-axis directions of X, Y and Z on the platform. Example 3

[0058] The universal optical test fixture for liquid crystal display modules provided in Example 1 or 2 is further optimized, such as Figure 5 , 6 As shown, the optical probe 3 is fixedly connected to the X-axis support 213 through a probe bearing plate 31 , a trapezoidal slot 311 is provided on the probe bearing plate 31 , and a trapezoidal buckle 312 matched with the trapezoidal slot 311 is connected to the optical probe 3 .

[0059] Through the above structural design, the trapezoidal buckle 312 is fixedly connected to the optical probe 3, and then the probe supporting plate 31 is fixedly connected to the X-axis support 213. When installing the optical probe 3, the optical probe 3 can be clamped on the inner wall of the trapezoidal slot 311 through the trapezoidal buckle 312, and then clamped and fixed, which is convenient for the later disassembly and replacement of the optical probe 3. Example 4

[0060] The universal optical test fixture for liquid crystal display modules provided in the above embodiments is further optimized, such as Figure 1 As shown, the optical test fixture also includes a display screen 5 and an industrial computer 6. The optical probe 3 and the display screen 5 are electrically connected to the industrial computer 6. The optical probe 3 and the display screen 5 are started by the industrial computer 6. The optical test fixture also includes an adjustable DC power supply 7. The adjustable DC power supply 7 is electrically connected to the industrial computer 6, the optical probe 3 and the display screen 5. The industrial computer 6 is detachably mounted on the middle and upper part of the cavity 11 by bolts, and the adjustable DC power supply 7 is detachably mounted on the bottom of the cavity 11 by bolts. The display screen 5 is fixedly mounted on the side wall of the display screen bracket 12 by bolts. The display screen 5 is one of a liquid crystal display, a plasma display, a 3D display and a touch screen display.

[0061] In specific implementation, the optical probe 3 , the display screen 5 and the industrial computer 6 are powered by an adjustable DC power supply 7 , the remaining electrical components are controlled by the industrial computer 6 , and the data acquired by the optical probe 3 is displayed by the display screen 5 .

[0062] The use process of the universal optical test fixture for liquid crystal display modules provided by the utility model is as follows:

[0063] The LCD module to be inspected is placed on the LCD module lighting test jig 4, and fixed by the LCD module lighting test jig 4 to ensure that the LCD module is in a fixed state. Then, the LCD module is inspected by the optical probe 3. During the inspection, the Y-axis bolt 224 can be opened and locked to unlock and lock the Y-axis slider 222, and the optical probe 3 can be adjusted and fixed in the Y-axis direction. The Z-axis bolt 234 can be opened and locked to unlock and lock the Z-axis slider 232, and the optical probe 3 can be adjusted and fixed in the Z-axis direction. The X-axis bolt 214 can be opened and locked to unlock and lock the X-axis slider 212, and the optical probe 3 can be adjusted and fixed in the X-axis direction, so that the optical probe 3 can be freely moved and inspected in the three-axis directions of X, Y and Z on the platform. Due to the structure of the slider and the slide rail, the stability of the optical probe 3 during movement can be guaranteed during adjustment.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A universal optical test fixture for liquid crystal display modules, characterized in that: It includes: A frame (1) having a cavity (11) inside and a display screen support (12) and a platform (13) on the top; An adjustable optical probe bracket (2), which is arranged on the platform (13) and close to the display screen bracket (12); An optical probe (3) mounted on an adjustable optical probe bracket (2) for performing an optical test on a display module; The liquid crystal display module lighting test jig (4) is arranged in the middle of the platform (13) and below the optical probe (3) and is used to fix the liquid crystal display module.

2. The universal optical test fixture for liquid crystal display modules according to claim 1, characterized in that: The adjustable optical probe bracket (2) comprises an X-axis adjustment component (21), a Y-axis adjustment component (22) and a Z-axis adjustment component (23), wherein the Y-axis adjustment component (22) is connected to the platform (13), the Z-axis adjustment component (23) is installed on the movable end of the Y-axis adjustment component (22), and the X-axis adjustment component (21) is connected to the movable end of the Z-axis adjustment component (23).

3. The universal optical test fixture for liquid crystal display modules according to claim 2, characterized in that: The Y-axis adjustment assembly (22) comprises a Y-axis guide rail (221) fixedly connected to the platform (13) and a Y-axis slider (222) slidably connected to the upper surface of the Y-axis guide rail (221); a Y-axis support (223) is fixedly mounted on the Y-axis slider (222); a Y-axis bolt (224) is threadedly connected to the Y-axis support (223); one end of the Y-axis bolt (224) passes through the Y-axis support (223) and is pressed against the top surface of the platform (13).

4. The universal optical test fixture for liquid crystal display modules according to claim 3, characterized in that: The Z-axis adjustment assembly (23) comprises a Z-axis guide rail (231) fixedly mounted on the outer wall of the Y-axis support (223) and a Z-axis slider (232) slidably connected to the upper surface of the Z-axis guide rail (231); the Z-axis support (233) is fixedly mounted on the Z-axis slider (232); the Z-axis support (233) is threadedly connected to a Z-axis bolt (234); one end of the Z-axis bolt (234) passes through the Z-axis support (233) and is pressed against the side wall of the Z-axis guide rail (231).

5. The universal optical test fixture for liquid crystal display modules according to claim 4, characterized in that: The X-axis adjustment assembly (21) comprises an X-axis guide rail (211) fixedly mounted on the outer wall of the Z-axis support (233) and an X-axis slider (212) slidably connected to the upper surface of the X-axis guide rail (211); the X-axis support (213) is fixedly mounted on the X-axis slider (212); the X-axis support (213) is threadedly connected to an X-axis bolt (214); one end of the X-axis bolt (214) passes through the X-axis support (213) and is pressed against the side wall of the X-axis guide rail (211).

6. The universal optical test fixture for liquid crystal display modules according to claim 5, characterized in that: The optical probe (3) is fixedly connected to the X-axis support (213) via a probe bearing plate (31), a trapezoidal card slot (311) is provided on the probe bearing plate (31), and a trapezoidal card buckle (312) adapted to the trapezoidal card slot (311) is connected to the optical probe (3).

7. The universal optical test fixture for liquid crystal display modules according to claim 1, characterized in that: The optical test fixture further comprises a display screen (5) and an industrial computer (6); the optical probe (3) and the display screen (5) are both electrically connected to the industrial computer (6); and the optical probe (3) and the display screen (5) are started via the industrial computer (6).

8. The universal optical test fixture for liquid crystal display modules according to claim 7, characterized in that: The optical testing fixture further comprises an adjustable DC power supply (7), wherein the adjustable DC power supply (7) is electrically connected to the industrial computer (6), the optical probe (3) and the display screen (5).

9. The universal optical test fixture for liquid crystal display modules according to claim 8, characterized in that: The industrial computer (6) is detachably mounted on the upper middle portion of the cavity (11) by means of bolts, and the adjustable DC power supply (7) is detachably mounted on the bottom of the cavity (11) by means of bolts.

10. The universal optical test fixture for liquid crystal display modules according to claim 7, characterized in that: The display screen (5) is fixedly mounted on a side wall of a display screen bracket (12) by means of bolts, and the display screen (5) is one of a liquid crystal display, a plasma display, a 3D display and a touch screen display.

Images