Multifunctional detection device for a display

Abstract

The utility model belongs to display detection technical field discloses a kind of multifunctional detection device of display, including detection platform, the upper portion of detection platform is equipped with dark box, and the inside of dark box is equipped with the anti-collision support platform for carrying out horizontal lifting to display, and the dark box is also equipped with automatic opening and closing door, the dark box is also equipped with visual camera for carrying out visual detection to display on anti-collision support platform;The anti-collision support platform includes positioning seat, and the positioning seat is installed with lifting support platform by micro-lifting mechanism, and the surface of lifting support platform is equipped with soft buffer rubber layer;The surface of buffer rubber layer is equipped with contact sensor for detecting the contact state of display.The utility model is lifted slowly by micro-lifting mechanism to drive lifting support platform, to carry the display on mechanical arm, avoid collision with lifting support platform, and cause damage to display.

Description

Technical Field

[0001] This utility model relates to the field of display testing technology, and in particular to a multifunctional testing device for displays. Background Technology

[0002] With the widespread application of flat panel displays, such as liquid crystal displays (LCDs) used extensively in televisions, computer monitors, mobile phones, and various home appliances, the quality of LCD panels has become increasingly important under mass production. Aspects such as color, contrast, response time, and brightness are crucial. Regarding LCD background uniformity, one observes the LCD luminance abnormality (MURA) condition. MURA refers to the phenomenon of various marks caused by uneven brightness on the display. The simplest way to judge this is to switch to a black screen and other grayscale images, and then carefully observe from various angles. Due to various manufacturing defects, LCDs exhibit various types of MURA, such as horizontal or 45-degree angle stripes, squares, circular blocks, or even a patch appearing in a corner. These defects result in low contrast and irregular display, making the severity of MURA an important reference for judging the quality of LCD panels. With the development of visual inspection technology, it has also been applied in the field of display inspection. However, existing display visual inspection devices are prone to collisions with the inspection table when placing the display during time testing, which can easily damage the display. Utility Model Content

[0003] To overcome the technical defects of the existing technology, this utility model provides a multi-functional testing device for a display. The device uses a micro-lifting mechanism to drive the lifting platform to rise slowly, thereby supporting the display on the robotic arm and avoiding collision with the lifting platform, which would damage the display.

[0004] The technical solution adopted by this utility model is: a multi-functional testing device for a display, including a testing platform, a dark box on the upper part of the testing platform, and an anti-collision support for horizontally supporting the display inside the dark box, and the dark box is also equipped with an automatic opening and closing door, and a visual camera for visually inspecting the display on the anti-collision support. The anti-collision support includes a positioning base, and a lifting support is mounted on the positioning base via a micro-lifting mechanism. The surface of the lifting support is provided with a soft cushioning rubber layer. The surface of the cushioning rubber layer is provided with a contact sensor for detecting the contact status of the display.

[0005] Preferably, the micro-lifting mechanism includes multiple vertically downward limiting rods disposed at the bottom of the lifting platform, and the positioning seat is provided with limiting through holes that cooperate with the limiting rods. The bottom of the lifting platform is also provided with a guide block, the bottom of the guide block is provided with a guide ramp, and the bottom of the positioning seat is provided with a linearly movable sliding block, and the sliding block is provided with a propulsion ramp that cooperates with the guide ramp. The positioning seat is provided with a drive mechanism that drives the sliding block to move linearly.

[0006] Preferably, the contact sensor is a piezoresistive sensor.

[0007] Preferably, the driving mechanism includes a lead screw mounted on a positioning seat, a movable block threaded onto the lead screw and moving along the lead screw, the movable block being fixed to a sliding block, and a servo motor for driving the lead screw to rotate on the positioning seat.

[0008] Preferably, the positioning seat is provided with a limiting guide rail, and the limiting guide rail is provided with a slider that moves linearly along the limiting guide rail, and the slider is fixed to the sliding block.

[0009] Preferably, the automatic door is opened and closed by a cylinder.

[0010] The beneficial effects of this utility model are as follows: This utility model has an anti-collision support for horizontally supporting the monitor inside the dark box. The lifting support is installed on the positioning seat via a micro-lifting mechanism. The surface of the lifting support is covered with a soft buffer rubber layer, and a contact sensor for detecting the contact status of the monitor is provided on the surface of the buffer rubber layer. The monitor is placed on the anti-collision support by a robotic arm, but without contacting the anti-collision support. Then, the lifting support is slowly raised by the micro-lifting mechanism. When the contact sensor on the surface of the buffer rubber layer detects contact with the monitor, the robotic arm places the monitor on the lifting support. This avoids collision between the two and prevents damage to the monitor. Attached Figure Description

[0011] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the anti-collision support of this utility model; Figure 3 This is a schematic diagram of the lead screw structure of this utility model; Figure 4 This is a schematic diagram of the limiting guide rail of this utility model.

[0013] Explanation of reference numerals in the attached diagram: 1. Detection table; 2. Dark box; 3. Anti-collision support; 4. Automatic opening and closing door; 5. Vision camera; 6. Positioning seat; 7. Lifting support; 8. Buffer rubber layer; 9. Limiting rod; 10. Limiting through hole; 11. Guide block; 12. Guide ramp; 13. Sliding block; 14. Propulsion ramp; 16. Contact sensor; 17. Lead screw; 18. Moving block; 19. Servo motor; 20. Limiting guide rail; 21. Slider; 22. Industrial computer; 23. Display screen. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0015] like Figures 1-4 As shown, this embodiment provides a multi-functional testing device for a display, including a testing platform 1, a dark box 2 on the upper part of the testing platform 1, and an anti-collision support 3 for horizontally supporting the display inside the dark box 2. The dark box 2 is also equipped with an automatic opening and closing door 4, and a vision camera 5 for visually inspecting the display on the anti-collision support 3. The anti-collision support 3 includes a positioning base 6, and a lifting support 7 is mounted on the positioning base 6 via a micro-lifting mechanism. The surface of the lifting support 7 is provided with a soft cushioning rubber layer 8. The surface of the cushioning rubber layer 8 is provided with a contact sensor 16 for detecting the contact status of the display. By providing an anti-collision support for horizontally supporting the display inside the dark box 2, the lifting support 7 is mounted on the positioning base 6 via a micro-lifting mechanism. The surface of the lifting support 7 is provided with a soft cushioning rubber layer 8, and the surface of the cushioning rubber layer 8 is provided with a contact sensor 16 for detecting the contact status of the display. A robotic arm places the display above the anti-collision support without contacting it. Then, the micro-lifting mechanism slowly raises the lifting support 7. When the contact sensor 16 on the surface of the cushioning rubber layer 8 detects contact with the display, the robotic arm places the display onto the lifting support 7. This avoids collisions between the two, thus preventing damage to the display. This utility model includes an industrial computer 22 connected to a vision camera, and the industrial computer 22 is equipped with a display screen 23 for displaying the vision inspection results.

[0016] The micro-lifting mechanism includes multiple vertically downward limiting rods 9 disposed at the bottom of the lifting platform 7, and a limiting through hole 10 on the positioning seat 6 that cooperates with the limiting rods. A guide block 11 is also provided at the bottom of the lifting platform 7, and a guide ramp 12 is provided at the bottom of the guide block 11. A linearly moving sliding block 13 is provided at the bottom of the positioning seat 6, and a pushing ramp 14 that cooperates with the guide ramp is provided on the sliding block 13. A drive mechanism is provided on the positioning seat 6 to drive the sliding block 13 to move linearly. By converting the linearly moving sliding block 13 into lifting motion, a fine-tuning effect is achieved, preventing excessive lifting amplitude and collision with the display. The contact sensor 16 is a piezoresistive sensor.

[0017] The driving mechanism includes a lead screw 17 mounted on a positioning seat 6. A movable block 18, threaded onto and moving along the lead screw 17, is mounted on the lead screw 17 and fixed to a sliding block 13. A servo motor 19, which drives the lead screw 17 to rotate, is mounted on the positioning seat. This design facilitates easy control. The servo motor is equipped with an encoder for detecting its rotational state. Both the servo motor and the contact sensor 16 are connected to a controller, which is not shown in the figure.

[0018] The positioning seat 6 is provided with a limiting guide rail 20, and the limiting guide rail 20 is provided with a slider 21 that moves linearly along the limiting guide rail 20, and the slider 21 is fixed to the sliding block 13.

[0019] The automatic opening and closing door 4 is opened and closed by a cylinder.

[0020] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0021] Working principle: Inside the dark box 2, there is an anti-collision support for horizontally supporting the monitor. A lifting platform 7 is installed on the positioning base 6 via a micro-lifting mechanism. The surface of the lifting platform 7 is covered with a soft buffer rubber layer 8, and a contact sensor 16 is provided on the surface of the buffer rubber layer 8 to detect the contact status of the monitor. The monitor is placed on the anti-collision support by a robotic arm, but without contacting the anti-collision support. Then, the lifting platform 7 is slowly raised by the micro-lifting mechanism. When the contact sensor 16 on the surface of the buffer rubber layer 8 detects contact with the monitor, the robotic arm places the monitor onto the lifting platform 7. This avoids collision between the two and prevents damage to the monitor.

[0022] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A multifunctional detection device for a display, characterized in that: The device includes a testing station (1), a dark box (2) is provided on the upper part of the testing station (1), and an anti-collision support (3) for horizontally supporting the display is provided inside the dark box (2). The dark box (2) is also provided with an automatic opening and closing door (4), and a vision camera (5) for visually inspecting the display on the anti-collision support (3). The anti-collision support (3) includes a positioning seat (6), and a lifting support (7) is installed on the positioning seat (6) via a micro-lifting mechanism. The surface of the lifting support (7) is provided with a soft buffer rubber layer (8). The surface of the buffer rubber layer (8) is provided with a contact sensor (16) for detecting the contact status of the display.

2. The multifunctional detection device for a display according to claim 1, characterized in that: The micro-lifting mechanism includes multiple vertically downward limiting rods (9) set at the bottom of the lifting platform (7), and the positioning seat (6) is provided with limiting through holes (10) that cooperate with the limiting rods. The bottom of the lifting platform (7) is also provided with a guide block (11), the bottom of the guide block (11) is provided with a guide ramp (12), and the bottom of the positioning seat (6) is provided with a linearly moving sliding block (13), and the sliding block (13) is provided with a propulsion ramp (14) that cooperates with the guide ramp. The positioning seat (6) is provided with a driving mechanism that drives the sliding block (13) to move linearly.

3. The multifunctional detection device for a display according to claim 1, characterized in that: The contact sensor (16) is a piezoresistive sensor.

4. The multifunctional detection device for a display according to claim 2, characterized in that: The driving mechanism includes a lead screw (17) mounted on a positioning seat (6), a movable block (18) threaded onto the lead screw (17) and moving along the lead screw (17), the movable block (18) being fixed to a sliding block (13), and a servo motor (19) for driving the lead screw (17) to rotate on the positioning seat.

5. A multifunctional detection device for a display according to claim 1, characterized in that: The positioning seat (6) is provided with a limiting guide rail (20), and the limiting guide rail (20) is provided with a slider (21) that moves linearly along the limiting guide rail (20), and the slider (21) is fixed to the sliding block (13).

6. The multifunctional detection device for a display according to claim 1, characterized in that: The automatic opening and closing door (4) is opened and closed by a cylinder.

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