LCD screen testing device

Abstract

The utility model discloses an LCD screen testing device which comprises a rack (1), a pressing handle (2), an upper contact ejector pin (410), an upper ejector pin fixing plate (411), a lower contact ejector pin (420), a lower ejector pin fixing plate (430), a screen supporting table (7), a push rod (8), a testing table (9) and a guide rail (10). The guide rail (10) is fixedly installed on the rack (1), the test board (9) is installed on the guide rail, a screen supporting table (7) is placed in the test board (9), and the screen supporting table (7) is used for placing a screen needing to be tested; and the pressing handle (2) is fixedly arranged on the rack (1). The pressing handle is pulled upwards and then pushed forwards, the contact ejector pins are in one-to-one correspondence with pins of a screen needing to be tested, after the power switch is turned on, a chip in the tool automatically starts to run a program, the screen automatically and sequentially displays pictures in the chip program, if the screen displays normally, the product is a normal product, and if the screen displays abnormally, the product is a defective product.

Description

Technical Field

[0001] This utility model relates to the field of electronic device testing technology, and in particular to an LCD screen testing device. Background Technology

[0002] With the rapid development of electronic information technology, LCD (Liquid Crystal Display) has become a crucial display component in various electronic devices, and its quality and performance directly impact the overall user experience and reliability of these devices. In today's electronic device field, LCD screens are widely used, from mobile phones and tablets to various industrial control equipment and medical instruments, all of which rely on high-quality LCD screens.

[0003] With the continuous advancement of technology, the performance requirements for LCD screens are becoming increasingly stringent. On the one hand, consumers have strict requirements for display clarity, color accuracy, and brightness uniformity; on the other hand, in industrial production and professional applications, LCD screens need to possess high reliability and stability to ensure the normal operation of equipment.

[0004] However, current LCD screen testing methods have certain limitations. Traditional testing methods often rely on manual observation and simple testing equipment, resulting in low testing efficiency and difficulty in guaranteeing accuracy. Manual observation is easily affected by subjective factors; different testers may reach different conclusions, and some minor defects may be difficult to detect.

[0005] During the transportation and storage process from the LCD screen factory to the assembly plant, screens may be damaged or scratched, resulting in screen quality that does not meet product requirements. If the finished products are directly installed without testing equipment and then tested, defective products need to be repaired again, which wastes a lot of manpower and resources.

[0006] Therefore, innovative designs are needed for LCD screen testing equipment to meet market demand for high-quality LCD screens and improve testing efficiency and accuracy. Utility Model Content

[0007] To address the problems existing in the prior art, this invention provides an LCD screen testing device. This device is designed primarily to meet the performance testing needs of LCD screens during manufacturing, quality inspection, and R&D processes, covering testing of LCD screens used in numerous fields, from consumer electronics to industrial control equipment. Through innovative design, this invention ensures accurate detection of various performance indicators of LCD screens, providing strong support for high-quality display in electronic devices.

[0008] To achieve the above objectives, the present invention provides an LCD screen testing device, comprising a frame, a clamping handle, an upper contact pin, an upper pin fixing plate, a lower contact pin, a lower pin fixing plate, a screen support platform, a push rod, a test platform, and a guide rail. The guide rail is fixedly mounted on the frame, and the test platform is fixedly mounted on the guide rail. A screen support platform is built into the test platform for placing the screen to be tested. The upper contact pin is mounted on the upper pin fixing plate, and the upper pin fixing plate is fixedly mounted on the frame. The lower contact pin is mounted on the lower pin fixing plate, and the lower pin fixing plate is fixedly connected to the push rod. The push rod is movably connected to the clamping handle, and the clamping handle is fixedly mounted on the frame.

[0009] In one embodiment of this utility model, the lower ejector pin fixing plate is fixedly mounted on the lower ejector pin fixing plate fixing post, the lower ejector pin fixing plate fixing post is fixed on the push rod bracket, and the push rod bracket is fixedly connected to the push rod. When the push rod is fixedly connected to the push rod bracket and moves upward, the lower ejector pin fixing plate is pushed upward, and the lower ejector pin fixing plate is laterally limited by a sliding sleeve. The tensioning structure on the clamping handle can drive the push rod to move upward.

[0010] In one embodiment of this utility model, a circuit board is placed inside the frame, and the circuit board and the test screen are electrically connected via upper and lower contact pins. When the circuit board is powered on, it automatically executes the screen display program without the need for complex operations such as buttons. The pins of the pin module correspond one-to-one with the pins of the required test screen; after the power switch is turned on, the chip inside the fixture automatically starts running the program, and the screen automatically displays the images within the chip's program sequentially. If the screen display is normal, it is a normal product; if the screen display is abnormal, it is a defective product. After power is off, the screen can be removed by pulling out the clamping handle.

[0011] In one embodiment of this utility model, a left power switch and a right power switch are installed on the frame. During use, the operator needs to turn on both switches to ensure personnel safety.

[0012] In one embodiment of the present invention, a fuse and a wiring device are also included, the fuse and the wiring device being used to supply power and protect the circuit.

[0013] In one embodiment of this utility model, the frame is made of phenolic resin.

[0014] The specific connection method between the components is as follows: the upper contact pin is fixed to the upper pin fixing plate, and the upper contact pin is fixed to the frame. The guide rail is fixed to the frame by a threaded connection. The guide rail and the test table are fitted with a clearance fit for lateral fixation and longitudinal position adjustment. The test table has a built-in screen support. Pulling the clamping handle upward moves the push rod upward. The push rod is connected to the push rod support plate. When the push rod moves upward, the lower contact fixing plate is pulled upward. The lower contact fixing plate is laterally fixed by a sliding sleeve.

[0015] This utility model achieves its testing function through the following structure:

[0016] Two sets of contact pins are provided. The upper contact pin is fixed on the upper pin fixing plate, which is fixedly mounted on the frame. The lower contact pin is fixed on the lower pin fixing plate, which is fixed on the tensioning structure of the clamping handle. The lower pin fixing plate can move longitudinally with the clamping handle.

[0017] A set of guide rails is used to adjust the longitudinal position of the test platform and screen support platform to ensure that the contact pins can contact the pins of the screen being tested. By adjusting the distance between the test platform and the lower pin fixing plate on the guide rails, the contact distance between the upper screen pins and the lower contact pins can be adjusted after the screen is placed on it, eliminating the need to adjust the test platform for each test.

[0018] The outer surface below the test platform can cooperate with the lower ejector pin fixing plate to achieve the purpose of stroke limit, preventing the screen and pins from being squeezed and deformed during operation.

[0019] A screen support platform allows the screen to be placed in the pin recess next to the test platform, determining its horizontal position and fixing its height during screen debugging. This ensures that the screen pins and contacts are easily and effectively aligned, preventing misalignment between the contact pins and screen pins.

[0020] The device features two power switches and one fuse. Operators must turn on both switches (left and right) during use to ensure safety. The fuse is also included to prevent accidents. Once the screen is positioned correctly, power is supplied to display the image; no other buttons or complex operations are required. During screen testing, operators must turn on both switches to power the device and enable normal operation, effectively reducing safety risks and screen malfunctions caused by personnel touching the upper contacts. Furthermore, a fuse is located below the power input to ensure immediate power cut-off in case of short circuits or improper operation, guaranteeing personnel safety.

[0021] This technical solution has the following beneficial effects:

[0022] This invention effectively detects screen problems caused by defective raw materials or improper transportation and storage before the screen is installed in the product. This significantly reduces the need for repairs and scrapping of the entire unit due to screen quality issues, minimizing waste of personnel and materials. Furthermore, it allows for efficient screen testing and effectively ensures the safety of operators.

[0023] The main body of the LCD screen testing device is made of phenolic plastic. Due to its material properties, it has high mechanical strength, good insulation, heat resistance, and corrosion resistance, ensuring that users will not be electrocuted or burned during use, thus guaranteeing operator safety. Furthermore, its relatively light weight allows for portability, easy storage and transportation, resulting in low operating costs. Attached Figure Description

[0024] Figure 1 This is a front view of an embodiment of the present invention;

[0025] Figure 2 This is a left view of an embodiment of the present invention;

[0026] Figure 3 This is a right view of an embodiment of the present invention;

[0027] Figure 4 This is a perspective view of an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached drawings: Frame 1, Clamping handle 2, Upper contact pin 410, Upper pin fixing plate 411, Lower contact pin 420, Lower pin fixing plate 430, Lower pin fixing plate fixing post 440, Push rod bracket 450, Sliding sleeve 460, Screen support platform 7, Push rod 8, Test platform 9, Guide rail 10. Detailed Implementation

[0029] The following is a description of the embodiments and appendices. Figures 1 to 4 The present invention will be further described below.

[0030] An LCD screen testing device includes a frame 1, a clamping handle 2, an upper contact pin 410, an upper pin fixing plate 411, a lower contact pin 420, a lower pin fixing plate 430, a lower pin fixing plate fixing post 440, a push rod support rod 450, a sliding sleeve 460, a screen support platform 7, a push rod 8, a test platform 9, and a guide rail 10. The guide rail 10 is fixedly mounted on the frame 1, and the test platform 9 is slidably mounted on the guide rail 10. The test platform 9 has a built-in screen support platform 7 for placing a test screen 100. The guide rail 10 is used to fix the lateral position of the test platform 9. The test platform 9 and the screen support platform 7 are an integral structure, with the screen support platform 7 embedded within the test platform 9. A circuit board with embedded software is placed inside the frame 1, positioned by a protrusion on the lower plate of the frame 1, and the circuit board is fixed to the protrusion by screws.

[0031] The upper contact pin 410 is mounted on the upper pin fixing plate 411, and the lower contact pin 420 is mounted on the lower pin fixing plate 430. The upper pin fixing plate 411 is fixedly mounted on the frame 1, and the lower pin fixing plate 430 is movably connected to the clamping handle 2. The clamping handle 2 is fixedly mounted on the outer shell. In this embodiment, the lower pin fixing plate 430 is mounted on the lower pin fixing plate fixing post 440, which is fixed to the push rod bracket 450. The push rod bracket 450 is fixedly connected to the push rod 8. Simultaneously, the push rod bracket 450 has sliding sleeves 460 on both sides, and the push rod bracket 450 is slidably connected to the sliding sleeves 460. The sliding sleeves 460 are fixedly mounted on the frame 1. The longitudinally arranged sliding sleeves 460 serve to laterally limit the lower pin fixing plate 430. The push rod 8 is movably connected to the clamping handle 2. When the clamping handle 2 moves forward on the frame 1, the clamping handle drives the push rod 8 to move forward synchronously, which in turn drives the lower contact pin 420, the lower pin fixing plate 430, the lower pin fixing plate fixing column 440, and the push rod bracket 450 to move forward.

[0032] The left side of the frame 1 is equipped with a fuse and power input device 6 and a left power switch 510. The fuse and power input device 6 supplies power to the test device and ensures that the voltage and current parameters are normal during operation. If the parameters are abnormal, the fuse will blow. The right side of the frame 1 is also equipped with a right power switch 520. During use, both the left and right switches must be in the conducting state to continue normal operation. This ensures that the operator will not accidentally touch the pins and contact pins 4 on the workbench, which could lead to personal safety or abnormal screen testing. The test bench 9 is equipped with a screen support platform 7 in the middle. The screen support platform 7 can hold the screen pins into the side grooves and also provides height support, ensuring stability during testing and preventing the contact pins from making incorrect contact with the pins. Since the upper contact pin 410 on the frame 1 is fixed to the upper pin fixing plate 411 and then fixed to the frame 1, the tight contact between the upper pins and the upper contact pin 410 is adjusted by the guide rail 10.

[0033] The LCD screen testing device's screen-lighting function is mainly achieved through the following methods:

[0034] Place the screen to be tested on the screen support 7 on the test bench 9, operate the clamping handle 2, push the clamping handle forward, and the tensioning structure on the clamping handle 2 will drive the lower ejector pin fixing plate 430 and the lower contact ejector pin 420 to move forward until they contact the screen pins. Then the fuse and power input device 6 will supply power to the device. After the power switches 5 on both sides are turned on at the same time, the screen will automatically light up the test screen.

[0035] Screen detection performance is achieved through the following methods:

[0036] This device has no buttons or screen detection switches. After the circuit board is placed and powered on, the screen lights up and the detection begins, which greatly shortens the detection time and reduces the number of manual operations required.

[0037] Ensuring safe use is mainly achieved through the following methods:

[0038] Once the screen is positioned and powered on, it will display an image without the need for complicated button or indicator light operations. During screen testing, the operator must turn on the rocker switches on both sides to power on the device and operate it normally. This effectively reduces personnel safety issues and screen erroneous errors caused by personnel touching the upper contacts. A fuse is located below the power input line to ensure personnel safety by immediately cutting off power in case of short circuit or improper operation. The circuit board starts the testing program immediately after the contacts make contact with the pins.

[0039] The above specific embodiments are only used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any changes and substitutions made to the present utility model without creative effort within the scope of the present utility model concept and claims shall fall within the protection scope of the present utility model patent.

Claims

1. An LCD screen testing device, characterized in that, The system includes a frame (1), a clamping handle (2), an upper contact pin (410), an upper pin fixing plate (411), a lower contact pin (420), a lower pin fixing plate (430), a screen support platform (7), a push rod (8), a test platform (9), and a guide rail (10). The guide rail (10) is fixedly mounted on the frame (1), and the test platform (9) is fixedly mounted on the guide rail. The test platform (9) has a built-in screen support platform (7). The screen to be tested is placed on the upper contact pin (410). The upper contact pin (410) is mounted on the upper contact pin fixing plate (411), which is fixedly mounted on the frame (1). The lower contact pin (420) is mounted on the lower contact pin fixing plate (430). The lower contact pin fixing plate (430) is fixedly connected to the push rod (8). The push rod (8) is movably connected to the clamping handle (2), which is fixedly mounted on the frame (1).

2. The LCD screen testing device according to claim 1, characterized in that, The lower ejector pin fixing plate (430) is fixedly installed on the lower ejector pin fixing plate fixing post (440), the lower ejector pin fixing plate fixing post (440) is fixed on the push rod bracket (450), and the push rod bracket (450) is fixedly connected to the push rod (8).

3. The LCD screen testing device according to claim 1, characterized in that, The rack (1) contains a circuit board, which is electrically connected to the test screen via an upper contact pin (410) and a lower contact pin (420).

4. The LCD screen testing device according to claim 1, characterized in that, The frame is equipped with a left power switch (510) and a right power switch (520).

5. The LCD screen testing device according to claim 1, characterized in that, It also includes a fuse and a wiring device (6) for supplying power and protecting the circuit.

6. The LCD screen testing apparatus according to any one of claims 1 to 5, characterized in that, The frame (1) is made of phenolic resin.

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