A liquid crystal display screen testing device

Abstract

A liquid crystal display screen testing device, including base, mounting plate and roller device, the top of base is connected with mounting plate, the back of mounting plate is provided with setting plate, one side of setting plate is concave and forms setting groove, setting groove is used for placing liquid crystal display screen, two slide rails are arranged on the opposite ends of mounting plate, the roller device includes roller support and silica gel roller, fixing rod and rolling bearing are arranged on the roller support, the rolling bearing is sleeved on the fixing rod, the silica gel roller is sleeved on the rolling bearing, two slide grooves are arranged on the bottom of roller support, the two slide grooves are slidably connected with the two slide rails, and the length of silica gel roller is greater than the width of setting groove, the liquid crystal display screen testing device provided by the utility model solves the technical problems that some dead angle areas are not pressed during the liquid crystal display screen detection process in the prior art, the whole screen is not uniformly stressed, the white point detection is not thorough enough, and false detection and missed detection are prone to occur.

Description

Technical Field

[0001] This utility model relates to a testing device, specifically a liquid crystal display screen testing device. Background Technology

[0002] LCD screens are flat, thin display devices composed of a certain number of color or monochrome pixels. They are placed in front of a light source or reflector, have low power consumption, and are suitable for battery-powered electronic devices. However, during the production process, LCD screens require testing equipment to test and process the screen.

[0003] In existing technologies, LCD screen testing mainly uses the nine-point pressing method to evaluate the touch sensitivity, positioning accuracy, and structural stability of the screen. Its core process and standards include test point positioning, pressing test execution, and abnormal phenomenon detection. Since nine points on the screen are selected as the detection method, there are some dead areas that are not pressed, and the entire screen is not evenly stressed, resulting in incomplete white point detection and easy to have false detections or missed detections. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a liquid crystal display screen testing device, which aims to solve the technical problem that in the existing technology, there are some dead corner areas that are not pressed during the testing process of liquid crystal display screen, the entire screen is not uniformly stressed, resulting in incomplete detection of white points and easy to have false detections and missed detections.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A liquid crystal display screen testing device includes a base, a mounting plate, and a roller assembly. The top of the base is connected to the mounting plate. A placement plate is provided on the side of the mounting plate facing away from the base. One side of the placement plate is recessed to form a placement groove for placing a liquid crystal display screen. Two slide rails are provided at opposite ends of the mounting plate. The roller assembly includes a roller bracket and a silicone roller. A fixed rod and a rolling bearing are provided on the roller bracket. The rolling bearing is sleeved on the fixed rod, and the silicone roller is sleeved on the rolling bearing. Two sliding grooves are provided at the bottom of the roller bracket, and the two sliding grooves are slidably connected to the two slide rails. The length of the silicone roller is greater than the width of the placement groove.

[0007] Furthermore, the roller bracket includes two baffles and a back plate. The two baffles are connected to opposite ends of the back plate. Each baffle is provided with a receiving groove that passes through the baffle. The two receiving grooves are passed through opposite ends of the fixing rod. The two slides are connected to the slide rail side of the two baffles.

[0008] Furthermore, a baffle through hole is provided on the side of the baffle facing away from the slide groove. The baffle through hole communicates with the receiving groove. A pressure regulating component is provided in the receiving groove. The pressure regulating component includes an adjusting rod. One end of the adjusting rod passes through the baffle through hole and protrudes out of the baffle.

[0009] Furthermore, a spring is provided inside the receiving groove, with one end of the spring elastically connected to the fixing rod and the other end of the spring elastically connected to the adjusting rod.

[0010] Furthermore, the pressure regulating assembly also includes an adjusting nut, and a threaded groove is provided at the end of the adjusting rod away from the spring. The length of the threaded groove is greater than the width of the adjusting nut. The adjusting nut is threadedly connected to the threaded groove and is located on the side of the baffle facing away from the slide groove.

[0011] Furthermore, the shelf is provided with a retrieval slot, which is connected to the shelf.

[0012] Furthermore, a positioning slot and a signal generator are provided in the storage slot. The positioning slot is matched with the liquid crystal display screen, and the signal generator is electrically connected to the liquid crystal display screen.

[0013] Furthermore, the angle between the side of the base facing the mounting plate and the side of the base facing away from the mounting plate is an acute angle.

[0014] Compared with existing technologies, the advantages of this invention are as follows: Compared with the traditional nine-point pressing method, this invention uses a mounting plate with a groove on it to place the LCD screen to be tested. A silicone roller in the roller assembly, a groove in the roller assembly, and a rail on the mounting plate allow the silicone roller to roll evenly across the LCD screen, replacing the nine-point pressing method which requires selecting nine different points for testing. This not only ensures even pressure on the entire LCD screen, allowing for faster problem identification, but also avoids false positives and missed positives associated with the nine-point pressing method. Furthermore, the pressure adjustment component on the roller assembly can be matched to different LCD screen models, providing different pressures required for different testing standards. This makes the invention more universal, economical, convenient, and improves testing accuracy while controlling testing costs. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of the structure of the liquid crystal display screen testing device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the roller device in the liquid crystal display testing device according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the receiving groove and the through hole of the baffle in the liquid crystal display testing device according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the silicone roller in the liquid crystal display testing device according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the adjusting rod in the liquid crystal display testing device according to an embodiment of the present invention.

[0021] Explanation of key component symbols:

[0022] 1. Base; 2. Mounting plate; 20. Shelf; 21. Storage slot; 22. Retrieval slot; 23. Positioning slot; 24. Signal generator; 25. Slide rail; 3. Roller assembly; 30. Roller bracket; 301. Baffle; 302. Back plate; 303. Fixing rod; 304. Rolling bearing; 305. Slide groove; 306. Baffle through hole; 31. Silicone roller; 32. Pressure adjustment assembly; 321. Spring; 322. Adjusting rod; 323. Adjusting nut; 324. Threaded groove; 33. Receiving slot.

[0023] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to indicate or imply 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 limiting the present invention.

[0026] In this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0027] Please see Figures 1 to 5 This utility model provides a liquid crystal display screen testing device, including a base 1, a mounting plate 2, and a roller device 3. The top of the base 1 is connected to the mounting plate 2. A placement plate 20 is provided on the side of the mounting plate 2 facing away from the base 1. One side of the placement plate 20 is recessed to form a placement groove 21 for placing the liquid crystal display screen. Two slide rails 25 are provided at opposite ends of the mounting plate 2. The roller device 3 includes a roller bracket 30 and a silicone roller 31. A fixing rod 303 and a rolling bearing 304 are provided on the roller bracket 30. The rolling bearing 304 is sleeved on the fixing rod 303, and the silicone roller 31 is sleeved on the rolling bearing 304. Two sliding grooves 305 are provided at the bottom of the roller bracket 30. The two sliding grooves 305 are slidably connected to the two slide rails 25. The length of the silicone roller 31 is greater than the width of the placement groove 21.

[0028] The roller bracket 30 includes two baffles 301 and a back plate 302. The two baffles 301 are connected to opposite ends of the back plate 302. Each baffle 301 is provided with a receiving groove 33 that passes through the baffle 301. The two ends of the fixing rod 303 pass through the two receiving grooves 33. The two slides 305 are connected to the side of the two baffles 301 facing the slide rail 25.

[0029] The baffle 301 has a baffle through hole 306 on the side facing away from the slide groove 305. The baffle through hole 306 communicates with the receiving groove 33. A pressure regulating component 32 is provided in the receiving groove 33. The pressure regulating component 32 includes an adjusting rod 322. One end of the adjusting rod 322 passes through the baffle through hole 306 and protrudes out of the baffle 301.

[0030] A spring 321 is provided inside the receiving groove 33. One end of the spring 321 is elastically connected to the fixing rod 303, and the other end of the spring 321 is elastically connected to the adjusting rod 322.

[0031] The pressure regulating assembly 32 also includes an adjusting nut 323. The end of the adjusting rod 322 away from the spring 321 is provided with a threaded groove 324. The length of the threaded groove 324 is greater than the width of the adjusting nut 323. The adjusting nut 323 is threadedly connected to the threaded groove 324. The adjusting nut 323 is located on the side of the baffle 301 facing away from the slide groove 305.

[0032] The shelf is provided with a retrieval slot 22, which is connected to the shelf slot 21.

[0033] The storage slot 21 is provided with a positioning slot 23 and a signal generator 24. The positioning slot 23 is matched with the liquid crystal display screen, and the signal generator 24 is electrically connected to the liquid crystal display screen.

[0034] The angle between the side of the base 1 facing the mounting plate 2 and the side of the base 1 facing away from the mounting plate 2 is an acute angle.

[0035] Specifically, when the LCD screen testing device is needed, the LCD screen is first placed in the storage slot 21 and matched with the position by the positioning slot 23 on the storage slot 21. At the same time, the LCD screen is electrically connected to the signal generator 24. After the electrical connection, the roller device 3 is slid along the slide rail 25 from top to bottom or from bottom to top across the entire LCD screen. During this process, the silicone roller 31 set in the roller device 3 contacts the LCD screen and provides squeezing force, thereby achieving the testing effect.

[0036] Then, unlike the traditional nine-point pressing detection method, since the overall length of the silicone roller 31 is greater than the width of the storage slot 21, it means that the length of the silicone roller 31 is greater than the width of the LCD screen to be tested. When the silicone roller 31 slides across the entire LCD screen, it maintains a uniform speed and provides uniform pressing force, which can make all parts of the entire LCD screen evenly pressed, resulting in more accurate detection. This avoids the existence of some dead areas that are not pressed, which would lead to incomplete white point detection, minimize false detections and missed detections, and optimize the quality of the LCD screen. At the same time, in order to adapt to the detection needs under different conditions, the adjusting rod 322 in the pressure adjusting component 32 can be used. By rotating the adjusting nut 323 on the adjusting rod 322, the distance between the adjusting rod 322 and the spring 321 can be increased or decreased due to the threaded connection, thereby changing the force on the fixed rod 303, and further changing the force of the silicone roller 31 as it slides across the LCD screen, thus adapting to different detection needs.

[0037] Finally, when the LCD screen needs to be replaced, it can be easily removed from the side through the retrieval slot 22, which is set on the shelf 20 and connected to the shelf slot 21, for further operation. At the same time, when the shape of the LCD screen changes, the corresponding shelf 20 can be replaced. Different shelf 20s can correspond to different shaped shelf slots 21 to match the testing requirements under different conditions, which also reduces the testing cost.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A liquid crystal display screen testing device, characterized in that... The device includes a base, a mounting plate, and a roller assembly. The top of the base is connected to the mounting plate. A shelf is provided on the side of the mounting plate facing away from the base. One side of the shelf is recessed to form a storage groove for placing an LCD screen. Two slide rails are provided at opposite ends of the mounting plate. The roller assembly includes a roller bracket and silicone rollers. A fixed rod and a rolling bearing are provided on the roller bracket. The rolling bearing is sleeved on the fixed rod, and the silicone roller is sleeved on the rolling bearing. Two sliding grooves are provided at the bottom of the roller bracket, and the two sliding grooves are slidably connected to the two slide rails. The length of the silicone roller is greater than the width of the storage groove.

2. The liquid crystal display testing device according to claim 1, characterized in that, The roller bracket includes two baffles and a back plate. The two baffles are connected to opposite ends of the back plate. Each baffle is provided with a receiving groove that passes through the baffle. The two ends of the fixing rod pass through the two receiving grooves. The sides of the two baffles facing the slide rail are connected to the two slide grooves.

3. The liquid crystal display testing device according to claim 2, characterized in that, The baffle is provided with a baffle through hole on the side of the baffle facing away from the slide groove. The baffle through hole communicates with the receiving groove. A pressure regulating component is provided in the receiving groove. The pressure regulating component includes an adjusting rod. One end of the adjusting rod passes through the baffle through hole and protrudes out of the baffle.

4. The liquid crystal display screen testing device according to claim 3, characterized in that, A spring is installed inside the receiving groove. One end of the spring is elastically connected to the fixing rod, and the other end of the spring is elastically connected to the adjusting rod.

5. The liquid crystal display testing device according to claim 4, characterized in that, The pressure regulating assembly also includes an adjusting nut. The end of the adjusting rod away from the spring is provided with a threaded groove. The length of the threaded groove is greater than the width of the adjusting nut. The adjusting nut is threadedly connected to the threaded groove. The adjusting nut is located on the side of the baffle facing away from the slide groove.

6. The liquid crystal display screen testing device according to claim 1, characterized in that, The shelf is provided with a retrieval slot, which is connected to the shelf.

7. The liquid crystal display screen testing device according to claim 1, characterized in that, The storage slot is equipped with a positioning slot and a signal generator. The positioning slot is matched with the LCD screen, and the signal generator is electrically connected to the LCD screen.

8. The liquid crystal display screen testing device according to claim 1, characterized in that, The angle between the side of the base facing the mounting plate and the side of the base facing away from the mounting plate is an acute angle.

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