Testing device for LCD liquid crystal display screen production

Abstract

The invention relates to the technical field of LCD liquid crystal display screen production, in particular to a testing device for LCD liquid crystal display screen production, which comprises a bottom frame, a power unit, a bearing plate, a mounting frame and the like, a power unit and a bearing plate are connected to the bottom frame. The power unit is connected with and drives the installation frame to move in the left-right direction, the front-back direction and the up-down direction. The power unit is controlled to drive the air pipe and the silica gel sleeve to move on the display screen for scribing, during scribing, an external air pump is started to supply air to the silica gel sleeve through the air pipe, the size of the silica gel sleeve is expanded, the contact area of the silica gel sleeve and the LCD screen is gradually expanded to 30 mm from initial 6 mm, all parts of scribed lines correspond to different contact areas, and the scribing efficiency is improved. The contact area is dynamically adjusted to cover an extreme scene.

Description

Technical Field

[0001] The present application relates to the technical field of LCD liquid crystal display screen production, and in particular to a testing device for LCD liquid crystal display screen production. Background Art

[0002] A touch LCD display is a display device that combines liquid crystal display technology (LCD) with touch functions. Its touch performance needs to be tested during the production process. However, current testing equipment can only complete basic tests, and the outer diameter selection range of the touch test finger is limited (3-12mm). It is impossible to dynamically adjust the contact area to cover extreme scenarios, that is, it is impossible to adjust the contact area between the touch point and the display, making it difficult to evaluate the display's adaptability to different touch areas.

[0003] In actual use, users may use different touch areas due to operating habits, environmental conditions or device characteristics, such as finger size, stylus thickness, etc. Taking user fingers as an example, when touching lightly, the average contact area of ​​an adult index finger is 10-14mm, the fingertip is 8-10mm, and the average contact area of ​​an adult thumb is 15-20mm. When pressing hard, the area in contact with the screen will increase by more than 50%, and the contact area between fingers and the screen is different for different people. For example, if the hands are fat, the area in contact with the screen by the fingers is much larger than the average for adults. If the display screen cannot adapt to different touch areas, it may lead to problems such as decreased touch sensitivity, false touches or missed touches, affecting user experience and device performance. Therefore, evaluating its adaptability to different touch areas will help optimize touch algorithms and hardware design, improve product compatibility and reliability, and meet the needs of diverse usage scenarios. Summary of the invention

[0004] In order to overcome the shortcomings that the outer diameter selection range of the touch test finger is limited (3-12mm), the contact area cannot be dynamically adjusted to cover extreme scenarios, that is, the contact area between the touch point and the display screen cannot be adjusted, and it is difficult to evaluate the adaptability of the display screen to different touch areas, the present invention provides a test device for LCD liquid crystal display screen production.

[0005] The technical solution is: a test device for LCD liquid crystal display screen production, including a base frame, a power unit, a receiving plate and a mounting frame; the base frame is connected to the power unit and the receiving plate; the power unit is connected to and drives the mounting frame to achieve movement in the left and right, front and back, and up and down directions; it also includes an air pipe and a silicone sleeve; the mounting frame is fixedly connected to the air pipe; the lower end of the air pipe is fixedly connected and connected to the silicone sleeve, and the outer surface of the silicone sleeve is covered with simulated skin material.

[0006] Furthermore, the receiving plate is arranged in an I-shape.

[0007] Furthermore, it also includes a water-absorbing sponge ring and a through tube; the water-absorbing sponge ring is fixedly connected between the bottom surface of the trachea and the upper surface of the silicone sleeve; the through tube is slidably connected to the lower part of the trachea; the through tube is fixedly connected to the silicone sleeve and communicated.

[0008] Furthermore, the upper side surface of the silicone sleeve is as large as the bottom surface of the water-absorbing sponge ring, and the upper part of the silicone sleeve is made of hard plastic material.

[0009] Furthermore, it also includes a dust cover; the dust cover is arranged above the receiving plate, a plurality of dust spraying pipes are arranged on the dust cover at equal intervals, and a through groove is opened at one end of the receiving plate.

[0010] Furthermore, a handle is provided on the dust cover.

[0011] Furthermore, it also includes a motor; the receiving plate is rotatably connected to the base frame; the motor is fixedly connected to the base frame; and the motor output shaft is fixedly connected to the receiving plate.

[0012] Furthermore, it also includes a mounting ring, a nozzle and a camera; the mounting ring is fixedly connected to the power unit; the mounting ring is arranged below the mounting frame; the air pipe is located in the mounting ring; a number of nozzles are fixedly connected to the mounting ring at equal intervals; the camera is fixedly connected to the power unit; the camera is located behind the mounting ring.

[0013] Further, the spray head is coaxially aligned with the water-absorbing sponge ring.

[0014] Furthermore, it also includes a partition; a partition is detachable on both sides of the receiving plate; and the partition is in contact with the dust cover.

[0015] The beneficial effects are as follows: 1. The present invention controls the power unit to drive the air tube and the silicone sleeve to move and draw lines on the display screen. When drawing lines, the external air pump is started to supply air to the silicone sleeve through the air tube, so that the volume of the silicone sleeve expands, and the contact area between the silicone sleeve and the LCD liquid crystal display screen gradually expands from the initial 6mm to 30mm, so that different contact areas correspond to different places where the lines are drawn, and the contact area is dynamically adjusted to cover extreme scenarios; in this process, the touch response of the LCD liquid crystal display screen is observed in real time through the test software to test the touch sensitivity of the LCD liquid crystal display screen under different contact surfaces, which helps to optimize the touch algorithm and hardware design, improve product compatibility and reliability, and meet the needs of diversified usage scenarios.

[0016] 2. In the present invention, during the preparation work, the staff uses a water spraying tool (such as a watering can) to spray water to the silicone sleeve to make the silicone sleeve wet, so as to simulate a wet hand scene; then, the power unit is controlled again to drive the air pipe and the silicone sleeve to move above the LCD liquid crystal display screen, and then the silicone sleeve is slowly lowered to make it contact with the LCD liquid crystal display screen, and the power unit is controlled to drive the air pipe and the silicone sleeve to perform a moving line test on the display screen to test the touch sensitivity of the LCD liquid crystal display screen under wet conditions.

[0017] 3. The present invention sprays water to the air pipe through a nozzle, and the water flows through the air pipe and the silicone sleeve, and finally flows to the inclined surface of the LCD liquid crystal display screen. During this process, the performance of water on the LCD liquid crystal display screen is observed by an external camera: if the water continues to flow down, and the residual water on the LCD liquid crystal display screen is spherical (contact angle>°), easy to roll, and water stains are not easy to remain on the surface, it means that the surface of the LCD liquid crystal display screen is highly hydrophobic, otherwise it is relatively weakly hydrophobic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the test device for LCD liquid crystal display production of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the receiving plate and the mounting frame of the test device for LCD liquid crystal display production of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the receiving plate and the motor of the test device for LCD liquid crystal display production of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the mounting ring and the nozzle of the test device for LCD liquid crystal display production of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the air pipe, silicone sleeve, camera and water-absorbing sponge ring of the test device for LCD liquid crystal display production of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the through-tube of the test device for producing LCD liquid crystal display screens of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the dust cover and the partition of the test device for LCD liquid crystal display production of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the LCD liquid crystal display production test device of the present invention when the receiving plate is in an inclined state.

[0019] Figure numbers: 1-base, 2-power unit, 3-supporting plate, 4-mounting frame, 5-air pipe, 6-silicone sleeve, 7-camera, 21-mounting ring, 22-nozzle, 23-water-absorbing sponge ring, 24-through pipe, 31-dust cover, 32-motor, 33-partition. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] A test device for LCD display production, such as Figure 1-Figure 8As shown, it includes a base frame 1, a power unit 2, a receiving plate 3 and a mounting frame 4; the base frame 1 is connected with the power unit 2 and the receiving plate 3; the power unit 2 is connected with the mounting frame 4, and the power unit 2 is composed of a screw rod structure arranged in the left and right directions, a screw rod structure arranged in the front and back directions, and a screw rod structure arranged in the up and down directions; It also includes an air tube 5 and a silicone sleeve 6; the air tube 5 is fixedly connected to the mounting frame 4; the lower end of the air tube 5 is fixedly connected and communicated with the silicone sleeve 6, and the outer surface of the silicone sleeve 6 is covered with simulated skin material.

[0023] In order to avoid lifting the interface of the touch LCD display screen, causing the touch LCD display screen to be unevenly installed and affecting subsequent detection, the receiving plate 3 is set to be an I-shape.

[0024] It also includes a water-absorbing sponge ring 23 and a through pipe 24; the water-absorbing sponge ring 23 is fixedly connected between the bottom surface of the air pipe 5 and the upper surface of the silicone sleeve 6; the through pipe 24 is slidably connected to the lower part of the air pipe 5; the through pipe 24 is fixedly connected to the silicone sleeve 6 and communicated.

[0025] In order to prevent the water from flowing downward, the upper side of the silicone sleeve 6 is as large as the bottom surface of the water-absorbing sponge ring 23, and the upper part of the silicone sleeve 6 cannot be deformed.

[0026] Taking the perspective of the figure as an example, the side where the chassis 1 is marked is the left side, and the side where the power unit 2 is marked is the right side; Preparation: Use fixing equipment (such as bolts) to firmly mount the touch LCD screen on the receiving plate 3, and connect the air pipe 5 to the external air pump through a hose; then, connect the LCD screen to the test software, and transmit the capacitance, capacitance coupling and other values ​​fed back during the LCD screen test process to the background for evaluation by the staff.

[0027] Testing work: After the preparation work is completed, the power unit 2 is controlled to drive the air tube 5 and the silicone sleeve 6 to move above the LCD screen, and then the silicone sleeve 6 is slowly lowered to make it contact with the LCD screen, and then the power unit 2 is controlled to drive the air tube 5 and the silicone sleeve 6 to move and draw lines on the screen. When drawing lines, the external air pump is started to supply air to the silicone sleeve 6 through the air tube 5, so that the volume of the silicone sleeve 6 expands, so that the contact area between the silicone sleeve 6 and the LCD screen gradually expands from the initial 6mm to 30mm, so that different contact areas correspond to different places of the drawn lines, and the contact area is dynamically adjusted to cover extreme scenarios; in this process, the touch response of the LCD screen is observed in real time through the test software to test the touch sensitivity of the LCD screen under different contact surfaces, which helps to optimize the touch algorithm and hardware design, improve product compatibility and reliability, and meet the needs of diversified usage scenarios; to ensure the comprehensiveness of the test, the power unit 2 is controlled to drive the silicone sleeve 6 to move multiple times, so as to test multiple areas of the LCD screen one by one, thereby improving the accuracy and reliability of the test results.

[0028] In various scenarios such as daily life, work, and entertainment, users may use wet fingers to operate the LCD screen due to the environment, habits, or emergency situations (for example, users directly use mobile phones or tablets to view information without completely drying their fingers after washing their hands); therefore, when preparing for work, the staff uses a water spraying tool (such as a spray bottle) to spray water onto the silicone sleeve 6 to make the silicone sleeve 6 wet to simulate a wet hand scenario; then, the power unit 2 is controlled again to drive the air tube 5 and the silicone sleeve 6 to move above the LCD screen, and then the silicone sleeve 6 is slowly lowered to make it contact with the LCD screen, and the power unit 2 is controlled to drive the air tube 5 and the silicone sleeve 6 to perform a moving stroke test on the screen to test the touch sensitivity of the LCD screen under wet conditions.

[0029] When the power unit 2 drives the air pipe 5 and the silicone sleeve 6 to perform a moving line test on the LCD display screen, the water on the silicone sleeve 6 will continue to transfer to the surface of the LCD liquid crystal display screen, resulting in the need for the staff to frequently spray water into the silicone sleeve 6; therefore, a water-absorbing sponge ring 23 is set between the air pipe 5 and the silicone sleeve 6, and the air pipe 5 is connected to the silicone sleeve 6 through a through pipe 24. When the staff uses a water spraying tool (such as a watering can) to spray water onto the silicone sleeve 6, it is also sprayed onto the water-absorbing sponge ring 23 to moisten and store water, and the power unit 2 drives the air pipe 5 and the silicone sleeve 6 to move the water on the silicone sleeve 6. Before the rubber sleeve 6 performs a moving line drawing test on the display screen, the power unit 2 is controlled to drive the air pipe 5 to slowly descend and squeeze the water-absorbing sponge ring 23, so that the water in the water-absorbing sponge ring 23 is squeezed out and flows to the surface of the silicone sleeve 6, so that the silicone sleeve 6 is automatically kept moist before drawing, and there is no need for the staff to frequently spray water into the silicone sleeve 6; it should be noted that the upper side of the silicone sleeve 6 is the same size as the bottom surface of the water-absorbing sponge ring 23, and the upper part of the silicone sleeve 6 is made of hard plastic. In this way, when the silicone sleeve 6 is inflated, the upper part of the silicone sleeve 6 will not become larger, which will hinder the water from flowing to the lower part of the silicone sleeve 6.

[0030] Example 2

[0031] On the basis of Example 1, Figure 4 , Figure 7 and Figure 8 As shown, a dust cover 31 is also included; the dust cover 31 is arranged above the receiving plate 3, three dust spraying pipes are arranged equidistantly on the dust cover 31, and a through groove is opened on the left part of the receiving plate 3.

[0032] In order to facilitate the movement of the staff, a handle is provided on the dust cover 31.

[0033] It also includes a motor 32; the receiving plate 3 is rotatably connected to the base frame 1; the motor 32 is bolted to the base frame 1; and the output shaft of the motor 32 is fixedly connected to the receiving plate 3.

[0034] It also includes a mounting ring 21, a nozzle 22 and a camera 7; the mounting ring 21 is welded on the power unit 2; the mounting ring 21 is arranged below the mounting frame 4; the air pipe 5 is located in the mounting ring 21; three nozzles 22 are fixedly connected to the mounting ring 21 at equal intervals; the camera 7 is fixedly connected to the power unit 2; the camera 7 is located behind the mounting ring 21.

[0035] The spray head 22 is coaxially aligned with the water-absorbing sponge ring 23 .

[0036] The receiving plate 3 also includes a partition plate 33 ; both sides of the receiving plate 3 are bolted with a partition plate 33 ; the partition plate 33 is in contact with the dust cover 31 .

[0037] When the LCD screen is used in a dusty environment (such as a factory or outdoors), dust will accumulate on the surface of the LCD screen. To test the effect of dust on touch sensitivity, a new LCD screen can be placed on the receiving plate 3, and then the dust cover 31 is covered on the LCD screen. Dust is sprayed into the cover through the dust spraying pipe on the dust cover 31 so that the dust covers the surface of the LCD screen. The dust cover 31 is then removed, and the power unit 2 is controlled to drive the air pipe 5 and the silicone sleeve 6 to move above the LCD screen. The silicone sleeve 6 is slowly lowered to make it contact with the LCD screen. The power unit 2 is then controlled to drive the air pipe 5 and the silicone sleeve 6 to perform a moving stroke test on the LCD screen to test the touch sensitivity of the LCD screen when covered with dust.

[0038] When dust is sprayed into the hood through the dust spray pipe on the dust hood 31, the amount of dust sprayed is difficult to control accurately, which may cause the surface of the LCD screen to be covered with too thick dust, deviating from the dust distribution in the actual use scenario, thereby affecting the effectiveness and accuracy of the test; therefore, before conducting the above test, a collection box is placed under the through groove at the front of the receiving plate 3, and from right to left as a reference, the motor 32 is controlled to drive the receiving plate 3 and the LCD screen to rotate counterclockwise by ninety degrees, so that the LCD screen is in a vertical state. At this time, excess dust falls off from the surface of the LCD screen and falls into the collection box, so that the dust attached to the surface of the LCD screen is close to the dust distribution in the actual use scenario, and then the motor 32 is controlled to drive the receiving plate 3 and the LCD screen to rotate clockwise by ninety degrees to reset for the above test.

[0039] The LCD screen is generally coated with a hydrophobic coating to ensure its hydrophobicity. The hydrophobic coating can reduce the adhesion of stains and fingerprints, facilitate cleaning, and keep the screen clear. In order to test the hydrophobicity of the LCD screen and ensure that the quality of the hydrophobic coating of the LCD screen meets the standard, the nozzle 22 is connected to the external liquid pump through a hose, and the motor 32 is controlled to drive the receiving plate 3 and the LCD screen to rotate clockwise from right to left, so that the LCD screen is tilted (such as Figure 8As shown); then, the power unit 2 is controlled to drive the air pipe 5 and the silicone sleeve 6 to move above the LCD screen, and the silicone sleeve 6 is slowly moved down to the surface of the LCD screen; the external liquid pump is started, and water is sprayed to the air pipe 5 through the nozzle 22. The water flows through the air pipe 5 and the silicone sleeve 6 and finally flows to the surface of the LCD screen. During this process, the performance of water on the LCD screen is observed through an external camera: if the water continues to flow down, and the residual water on the LCD screen is spherical (contact angle>90°), easy to roll, and it is not easy to leave water stains on the surface, it means that the surface of the LCD screen has strong hydrophobicity, otherwise it is weak in hydrophobicity; in this way, the hydrophobic coating of the LCD screen is tested to ensure that the hydrophobic coating of the LCD screen has good function. If the hydrophobic effect of the LCD screen is poor, it can be reversely indicated that there is a problem in the hydrophobic coating coating process in the production process of the LCD screen. In this way, the staff can also be prompted to adjust the hydrophobic coating coating process to reduce losses.

[0040] It should be noted that the downstream water will eventually fall into the collection box of the receiving plate 3, and before water is injected into the air pipe 5 through the nozzle 22, a partition 33 is set on the left and right sides of the receiving plate 3 to intercept the water and prevent it from flowing out of the LCD liquid crystal display screen and the receiving plate 3, ensuring that all the water can flow into the collection box, avoiding the water carrying dust to flow onto the base frame 1 and the power unit 2, polluting the working environment, and causing damage to the components on the power unit 2, and reducing the subsequent cleaning scope of the staff.

[0041] In addition, the hydrophobicity test can be performed after testing the touch sensitivity of the LCD screen under dust coverage. At this time, the dust attached to the surface of the LCD screen is close to the dust distribution in the actual use scenario. By observing the behavior of water droplets on the dust-attached surface, the hydrophobicity of the LCD screen in the actual environment can be more realistically reflected.

[0042] In addition, before conducting the hydrophobicity test, the power unit 2 can be controlled to drive the air tube 5 and the silicone sleeve 6 to move and draw lines on the LCD display screen for multiple times to simulate the long-term use of the LCD display screen, and then the above-mentioned hydrophobicity test can be repeated to detect whether the hydrophobicity of the LCD display screen has changed after long-term use, that is, to test the wear resistance of the hydrophobic layer.

[0043] In addition, by making the nozzle 22 face the water-absorbing sponge ring 23, when testing the hydrophobicity of the LCD screen, the water sprayed from the nozzle 22 will first contact the water-absorbing sponge ring 23 and then fall downward onto the LCD screen, thereby automatically replenishing the water-absorbing sponge ring 23. When testing the next LCD screen, there is no need for staff to spray water on the water-absorbing sponge ring 23, thereby saving steps and reducing the workload of staff.

[0044] It should be noted that when testing is performed only by dynamically adjusting the contact area between the silicone sleeve 6 and the LCD display screen, the nozzle 22 does not spray water, and the power unit 2 does not drive the air pipe 5 to slowly descend to squeeze the water-absorbing sponge ring 23 .

[0045] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A test device for LCD display screen production, comprising a base frame (1), a power unit (2), a receiving plate (3) and a mounting frame (4); the base frame (1) is connected to the power unit (2) and the receiving plate (3); the power unit (2) is connected to and drives the mounting frame (4) to achieve left-right, front-back and up-down movement; characterized in that: It also comprises an air tube (5) and a silicone sleeve (6); the air tube (5) is fixedly connected to the mounting frame (4); the lower end of the air tube (5) is fixedly connected to and communicated with the silicone sleeve (6), and the outer surface of the silicone sleeve (6) is covered with simulated skin material.

2. A test device for LCD display production according to claim 1, characterized in that: The receiving plate (3) is arranged in an I-shape.

3. The LCD display production test device according to claim 1, characterized in that: It also includes a water-absorbing sponge ring (23) connected between the bottom surface of the air pipe (5) and the upper surface of the silicone sleeve (6); a through pipe (24) is slidably connected to the lower part of the air pipe (5); and the through pipe (24) is fixedly connected to and communicates with the silicone sleeve (6).

4. A test device for LCD display production according to claim 3, characterized in that: The upper side of the silicone sleeve (6) is as large as the bottom surface of the water-absorbing sponge ring (23), and the upper part of the silicone sleeve (6) is made of hard plastic material.

5. The LCD display production test device according to claim 1, characterized in that: It also comprises a dust cover (31) connected to the top of the receiving plate (3), a plurality of dust spraying pipes are arranged at equal intervals on the dust cover (31), and a through groove is formed at one end of the receiving plate (3).

6. A test device for LCD display production according to claim 5, characterized in that: The dust cover (31) is provided with a handle.

7. The LCD display production test device according to claim 1, characterized in that: It also includes a motor (32) connected to the base frame (1); the receiving plate (3) is rotatably connected to the base frame (1); and the output shaft of the motor (32) is fixedly connected to the receiving plate (3).

8. The LCD display production test device according to claim 3, characterized in that: It also includes a mounting ring (21) connected to the power unit (2); the mounting ring (21) is arranged below the mounting frame (4); the air pipe (5) is located inside the mounting ring (21); a plurality of nozzles (22) are fixedly connected to the mounting ring (21) at equal intervals; a camera (7) is fixedly connected to the power unit (2); and the camera (7) is located behind the mounting ring (21).

9. The LCD display production test device according to claim 8, characterized in that: The spray head (22) is coaxially aligned with the water-absorbing sponge ring (23).

10. The LCD liquid crystal display production testing device according to claim 5, characterized in that: It also includes two partitions (33) which are detachably connected to the two sides of the receiving plate (3); the partitions (33) are in contact with the dust cover (31).

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