High-efficiency liquid crystal module screen detection equipment

Abstract

The utility model relates to liquid crystal module screen production technical field especially high -efficient liquid crystal module screen detection equipment, including base, backlight unit, the top of base is provided with the backlight unit for emitting light, the backlight unit is provided with multiple groups and is arranged in the inside above base orthogonally, the inside of base is provided with first infrared emitter and second infrared emitter, the bottom of mounting bracket is provided with first infrared receiver and second infrared receiver, the utility model discloses the original whole backlight panel is replaced for the split backlight unit, in the detection process of liquid crystal screen, utilize first infrared emitter, second infrared emitter, first infrared receiver and second infrared receiver to determine the size of liquid crystal screen, to make the backlight unit under the liquid crystal screen light up and make the remaining area part's backlight unit close, prevent strong light to human eye or camera cause damage, when the detection of large quantities of same size liquid crystal screen, also can control fixed area's backlight unit light up to adapt demand.

Description

Technical Field

[0001] This utility model relates to the field of LCD module screen production technology, and in particular to high-efficiency LCD module screen testing equipment. Background Technology

[0002] A liquid crystal display module is a display module that integrates core components such as a liquid crystal display panel (LCD), a driver chip, a backlight, and a circuit board. It can be directly connected to external circuits to display images or text. Its characteristics include thinness, lightness, and low power consumption. It is widely used in mobile phones, televisions, industrial equipment, and other fields. It displays images by controlling the arrangement of liquid crystal molecules to change the light transmittance, and requires a backlight module (such as LED) to enhance brightness.

[0003] In the production of LCD module screens, there is a quality inspection process. Its function is to test the functionality of the LCD display panel. The LCD display panel that passes the test will be assembled with the backlight panel to form the finished LCD screen. The testing process involves powering on the LCD display panel without backlight and connecting it to the screen. Then, it is placed above the backlight table. The backlight table emits light instead of the backlight panel so that the LCD display panel can display the image. Quality inspectors check the integrity and color of the image.

[0004] Existing backlight stages are often large in size to accommodate LCD panels of different sizes, and their light-emitting components are integrated, so they can only emit light as a whole. This means that when the LCD panel cannot cover the entire backlight stage, light will shine directly into the eyes of quality inspectors without being blocked by the LCD panel, which can easily affect their eyesight. Utility Model Content

[0005] To overcome the problem that most backlight stages are often large in size to accommodate different sizes of LCD panels, and their light-emitting components are integrated, they can only emit light as a whole. This results in light shining directly into the eyes of quality inspectors without being blocked by the LCD panel when the LCD panel cannot cover the entire backlight stage, which can easily affect the eyesight of quality inspectors.

[0006] The technical solution of this utility model is as follows: a high-efficiency LCD module screen testing device, including a base and a backlight unit. A backlight unit for emitting light is arranged above the base. Multiple backlight units are arranged in an orthogonal array on the inner side of the base. An LCD screen is arranged above the backlight unit. A first infrared emitter and a second infrared emitter are arranged on the inner side of the base. A mounting bracket is arranged on one side of the base. A first infrared receiver and a second infrared receiver are arranged at the bottom of the mounting bracket. The first infrared emitter and the second infrared emitter are located on two adjacent sides of the inner side of the base. The first infrared receiver is located directly above the first infrared emitter. The second infrared receiver is located directly above the second infrared emitter. Both the first infrared emitter and the second infrared emitter can emit multiple infrared rays that are arranged in a straight line and are parallel to each other.

[0007] Preferably, a socket is provided on one side of the base, and the power adapter draws power from the socket during use and is electrically connected to the driver board of the LCD screen to power the LCD screen.

[0008] Preferably, the interior of the mounting bracket is hollow to form a wire-passing groove, through which the wires of the first infrared receiver and the second infrared receiver pass.

[0009] Preferably, a slit is left between the backlight unit and the base directly above the first infrared emitter and the second infrared emitter.

[0010] Preferably, the backlight unit includes a substrate, LEDs, and a composite optical film. The surface of the substrate is provided with LEDs, and the light-emitting side of the LEDs is provided with a reflector.

[0011] Preferably, a composite optical film is provided on one side of the reflector, which is composed of a polarizing film, a light guiding film, a diffusion film and a prism film.

[0012] Preferably, the sidewalls of the reflector are provided with light-shielding walls, the highest point of which is flush with the composite optical film, and ribbon cables are provided between the substrates and electrically connected through the ribbon cables.

[0013] The beneficial effects of this utility model are:

[0014] By replacing the original single backlight panel with separate backlight units, the size of the LCD screen is determined during the testing process using a first infrared emitter, a second infrared emitter, a first infrared receiver, and a second infrared receiver. This allows the backlight units below the LCD screen to light up while the backlight units in other areas remain off, preventing strong light from damaging the human eye or camera. When testing large batches of LCD screens of the same size, the backlight units in fixed areas can also be controlled to light up to meet specific needs. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0016] Figure 2 The diagram shown is a three-dimensional structural schematic of the backlight unit of this utility model.

[0017] Figure 3 The diagram shown is a three-dimensional structural schematic of the base of this utility model;

[0018] Figure 4 The diagram shown is a three-dimensional structural schematic of the mounting bracket of this utility model;

[0019] Figure 5 The diagram shown is a three-dimensional structural schematic of the first infrared transmitter of this utility model;

[0020] Figure 6The diagram shown is a three-dimensional structural schematic of the backlight unit of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Base; 101. Socket; 2. Backlight unit; 201. Substrate; 202. Lamp bead; 203. Reflector; 204. Composite optical film; 205. Light shield; 206. Ribbon cable; 3. LCD screen; 401. First infrared transmitter; 402. Second infrared transmitter; 501. First infrared receiver; 502. Second infrared receiver; 6. Mounting bracket; 601. Cable tray; 7. Slit. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-6 This utility model provides an embodiment of a high-efficiency LCD module screen testing device, including a base 1 and a backlight unit 2. The backlight unit 2 for emitting light is disposed above the base 1. Multiple sets of backlight units 2 are arranged in an orthogonal array above the inner side of the base 1. An LCD screen 3 is disposed above the backlight unit 2. A first infrared emitter 401 and a second infrared emitter 402 are disposed inside the base 1. A mounting bracket 6 is disposed on one side of the base 1. A first infrared receiver 501 and a second infrared receiver 502 are disposed at the bottom of the mounting bracket 6. The first infrared emitter 401 and the second infrared emitter 402 are located on two adjacent sides of the inner side of the base 1. The first infrared receiver 501 is located directly above the first infrared emitter 401. The external receiver 502 is located directly above the second infrared emitter 402. Both the first infrared emitter 401 and the second infrared emitter 402 can emit multiple infrared rays that are arranged in a straight line and are parallel to each other. By replacing the original whole backlight panel with a separate backlight unit 2, during the detection process of the LCD screen 3, the size of the LCD screen 3 is determined by the first infrared emitter 401, the second infrared emitter 402, the first infrared receiver 501, and the second infrared receiver 502. This allows the backlight unit 2 below the LCD screen 3 to light up and the backlight unit 2 in other areas to turn off, preventing strong light from damaging the human eye or camera. When detecting a large number of LCD screens 3 of the same size, the backlight unit 2 in a fixed area can also be controlled to light up to meet the requirements.

[0024] Please see Figure 3 In this embodiment, a socket 101 is provided on one side of the base 1. When in use, the power adapter draws power from the socket 101 and is electrically connected to the driver board of the LCD screen 3 to supply power to the LCD screen 3.

[0025] Please see Figure 4 In this embodiment, the interior of the mounting bracket 6 is hollow to form a wire-passing groove 601, through which the wires of the first infrared receiver 501 and the second infrared receiver 502 pass.

[0026] Please see Figure 5 In this embodiment, a slit 7 is left between the backlight unit 2 and the base 1 directly above the first infrared emitter 401 and the second infrared emitter 402; the first infrared emitter 401 and the second infrared emitter 402 are installed at the bottom of the slit 7, and the slit 7 is left only at the light emission point. The width of the slit 7 can be made very thin to avoid the gap between the backlight unit 2 and the base 1 being too large and affecting the detection integrity of the LCD screen 3.

[0027] Please see Figure 5 In this embodiment, the backlight unit 2 includes a substrate 201, LED chips 202, and a composite optical film 204. LED chips 202 are disposed on the surface of the substrate 201. A reflector 203 is disposed on the light-emitting side of the LED chips 202. A composite optical film 204 is disposed on one side of the reflector 203. The composite optical film 204 is composed of a polarizing film, a light-guiding film, a diffusion film, and a prism film. A light-shielding wall 205 is disposed on the sidewall of the reflector 203. The high point of the light-shielding wall 205 is flush with the composite optical film 204. A ribbon cable 206 is disposed between the substrates 201 and passes through... The ribbon cable 206 is electrically connected; the ribbon cable 206 electrically connects all substrates 201 in a certain order, so that the control system can number and control all substrates 201 separately. The light emitted by the lamp beads 202 is processed by the composite optical film 204 to become the backlight required by the LCD screen 3. The reflector 203 and the light shield 205 block and reflect the scattered light to achieve a light-focusing effect. For the sake of illustration, the size of the backlight unit 2 is enlarged and the number is reduced. In actual applications, the number of backlight units 2 is very large, and the thickness of the light shield 205 is also very thin.

[0028] When in use, after powering on the LCD screen 3 and connecting the display cable, place it in the upper left corner of the base 1 and ensure that the LCD screen 3 is in close contact with the base 1. The first infrared emitter 401 and the second infrared emitter 402 emit multiple vertically upward infrared rays from the slit 7. Some of the infrared rays are blocked by the LCD screen 3. The first infrared receiver 501 and the second infrared receiver 502 receive the remaining infrared rays, thereby obtaining the length and width information of the LCD screen 3. The control system controls the lamp beads 202 of the backlight unit 2 in the lower area of ​​the LCD screen 3 to light up, while the backlight units 2 in the remaining areas are all turned off. The light emitted by the lamp beads 202 is processed by the composite optical film 204 to become the backlight required by the LCD screen 3, enabling the LCD screen 3 to display the image. After the quality inspector checks the image, the quality inspection is completed.

[0029] Through the above steps, by replacing the original whole backlight panel with a separate backlight unit 2, during the testing process of the LCD screen 3, the size of the LCD screen 3 is determined by the first infrared emitter 401, the second infrared emitter 402, the first infrared receiver 501, and the second infrared receiver 502, thereby turning on the backlight unit 2 below the LCD screen 3 and turning off the backlight unit 2 in the remaining areas to prevent strong light from damaging the human eye or camera. When testing a large number of LCD screens 3 of the same size, the backlight unit 2 in a fixed area can also be controlled to light up to meet the requirements.

Claims

1. A high-efficiency LCD module screen testing device, comprising a base (1); characterized in that: It also includes a backlight unit (2), and a backlight unit (2) for emitting light is provided above the base (1). The backlight unit (2) is provided in multiple sets and arranged in an orthogonal array above the inner side of the base (1). An LCD screen (3) is provided above the backlight unit (2). A first infrared emitter (401) and a second infrared emitter (402) are provided on the inner side of the base (1). A mounting bracket (6) is provided on one side of the base (1). A first infrared receiver (501) and a second infrared receiver (502) are provided at the bottom of the mounting bracket (6). The first infrared emitter (401) and the second infrared emitter (402) are located on two adjacent sides of the inner side of the base (1). The first infrared receiver (501) is located directly above the first infrared emitter (401), and the second infrared receiver (502) is located directly above the second infrared emitter (402). Both the first infrared emitter (401) and the second infrared emitter (402) can emit multiple infrared rays that are arranged in a straight line and are parallel to each other.

2. The high-efficiency LCD module screen testing equipment according to claim 1, characterized in that: A socket (101) is provided on one side of the base (1). When in use, the power adapter draws power from the socket (101) and is electrically connected to the driver board of the LCD screen (3) to supply power to the LCD screen (3).

3. The high-efficiency LCD module screen testing equipment according to claim 1, characterized in that: The interior of the mounting bracket (6) is hollow to form a wire channel (601), through which the wires of the first infrared receiver (501) and the second infrared receiver (502) pass out.

4. The high-efficiency LCD module screen testing equipment according to claim 1, characterized in that: Directly above the first infrared emitter (401) and the second infrared emitter (402), the backlight unit (2) and the base (1) are separated by a slit (7).

5. The high-efficiency LCD module screen testing equipment according to claim 1, characterized in that: The backlight unit (2) includes a substrate (201), an LED (202) and a composite optical film (204). The surface of the substrate (201) is provided with an LED (202), and the light-emitting side of the LED (202) is provided with a reflector (203).

6. The high-efficiency LCD module screen testing equipment according to claim 5, characterized in that: A composite optical film (204) is provided on one side of the reflector (203). The composite optical film (204) is composed of a polarizing film, a light guiding film, a diffusion film and a prism film.

7. The high-efficiency LCD module screen testing equipment according to claim 6, characterized in that: The reflector (203) has a light-shielding wall (205) on its side wall. The high point of the light-shielding wall (205) is flush with the composite optical film (204). A ribbon cable (206) is provided between the substrates (201) and is electrically connected through the ribbon cable (206).

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