Display module detection device
By independently forming the detection fixture as a driver board and display module fixture, and through flexible adaptation of FPC connection, the problem that existing detection fixtures cannot support arbitrary angle detection is solved, achieving higher detection accuracy and flexibility.
Patent Information
- Application Number
- CN202421532981.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-01
AI Technical Summary
Existing detection fixtures cannot support arbitrary angle detection, resulting in limited detection accuracy and cannot meet customers' detection needs for simulated consumer use angles.
A display module detection device is designed to independently connect the traditional integrated detection fixture into the driver board and the display module fixture, and connect it through a flexible adapter FPC to support any angle detection.
It realizes arbitrary angle detection of the display module, improves the accuracy of detection, and meets customers' detection needs for simulated consumer usage angles.
Smart Images
Figure CN222800844U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display modules, in particular to a display module detection device. Background Art
[0002] LED display unit board, also known as LED display module or simply unit board, is the main component of LED display, which is composed of LED light-emitting diodes and driving circuits, driving ICs and plastic kits. In the LED display industry, LED unit boards are now divided into two categories. Indoor unit boards are generally called surface mount (three-in-one surface mount) in the industry; outdoor and semi-outdoor units are generally called modules. The characteristics of indoor surface mount: high image clarity, rich colors, but the disadvantage is that the price is high.
[0003] Display modules need to undergo QC electrical testing before shipment. QC testing uses testing fixtures. Currently, the testing fixtures are fixed on the assembly line platform. The display screen is placed on the fixture, and then the screen is cut for testing. Although some module manufacturers now make the display module part of the fixture rotatable at 45°, the operator can rotate this part of the fixture to test the screen at 45°;
[0004] However, as customers' quality requirements increase, more and more customers require testing at angles simulated by consumers. Most existing testing fixtures do not support testing at any angle, which results in limitations in the actual testing process and easily affects the accuracy of the test. For this reason, a display module testing device is proposed. Utility Model Content
[0005] Based on this, it is necessary to provide a display module detection device to address the above technical problems, which separates the traditional integrated detection fixture into a driving board and a display module fixture and connects them through a flexible transfer FPC to meet the requirements of the actual application detection process. The detection operation of the actual module can be realized at any angle.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A display module detection device, comprising:
[0008] A driving board, wherein a ZIF interface is provided on the driving board, the driving board is connected to a transfer FPC via the ZIF interface, and one end of the transfer FPC is connected to a BTB connector;
[0009] A display module fixture, wherein a receiving groove is provided on the display module fixture for placing the display module;
[0010] The back groove is formed on the bottom wall of the receiving groove on the display module fixture, and the FPC on the display module is extended to the outside through the back groove to be connected with the BTB connector on the transfer FPC for detection.
[0011] Further, the driving board includes a driving PCB board;
[0012] The driving PCB board is provided with a MIPI bridge module, a power conversion module, a backlight power supply module and a Flash memory module. The MIPI bridge module, the power conversion module, the backlight power supply module and the Flash memory module are all electrically connected to the driving PCB board to form the driving board for providing detection signals and power.
[0013] Furthermore, the length of the transfer FPC is between twenty and forty centimeters.
[0014] Furthermore, the transfer FPC is a double-layer flexible circuit board routing.
[0015] Furthermore, the driving PCB board has four to six layers of wiring.
[0016] Furthermore, the display module fixture is made of bakelite, and an avoidance groove is provided in the display module fixture near the back groove for avoiding the component area on the display module.
[0017] Furthermore, a limiting element is installed on the display module fixture for limiting the display module placed in the receiving groove.
[0018] Further, the limiting element includes a sliding plate slidably arranged on both sides of the display module fixture, a tooth plate connected to one side of the sliding plate, and a gear meshed between the two tooth plates;
[0019] The sliding plate extends outside the display module fixture and is fixed with a limiting plate, and the limiting plate can slide along the length direction of the display module fixture.
[0020] Furthermore, the bottom of the gear is movably connected to the bottom wall of the display module fixture through a shaft seat, and a connecting portion is extended upward from the top of the gear, and the connecting portion passes through the outside of the display module fixture and is fixed with a fingerboard;
[0021] The fingerboard is provided with finger grooves.
[0022] Furthermore, a plurality of rubber abutment balls are evenly distributed at the bottom of the fingerboard along the circumferential direction of the connecting portion, and the plurality of rubber abutment balls all abut against the corresponding display module fixture below.
[0023] Compared with the prior art, the utility model has the following beneficial effects:
[0024] The display module detection device provided by the utility model places the display module in a display module fixture. Since the display module is connected to the driving board through a flexible transfer FPC, it can rotate independently, so that the operator can hold the display module fixture to simulate consumers using mobile phones to detect the display screen at any angle, thereby improving the accuracy of the detection;
[0025] By setting the limiting element, after the display module enters the receiving slot, the finger plate can be rotated to make the two limiting plates slide over the display module to form a covering limit, thereby avoiding the display module falling off the display module fixture during the actual detection process, which may easily cause damage at the edge. At the same time, with the setting of the finger plate, it is convenient for consumers to use fingers to hold the device in their daily life and to facilitate detection, and the sliding of the limiting plate can be controlled by the thumb. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 A schematic diagram of the structure of the display module detection device provided by the utility model;
[0027] Figure 2 A schematic diagram of the front structure of a display module of the display module detection device provided by the utility model;
[0028] Figure 3 A schematic diagram of the back structure of a display module of the display module detection device provided by the utility model;
[0029] Figure 4 A schematic diagram of the display module fixture structure of the display module detection device provided by the utility model;
[0030] Figure 5 A schematic diagram of the structure of the limiting element of the display module detection device provided by the utility model;
[0031] Figure 6 A schematic diagram of a cross-sectional structure of a display module fixture of a display module detection device provided by the utility model;
[0032] Figure 7 A schematic diagram of the rubber contact ball structure of the display module detection device provided by the utility model;
[0033] Figure 8 This is a schematic diagram of the internal structure of a driving board of the display module detection device provided by the utility model.
[0034] The markings in the figure are as follows:
[0035] Driver board 1, transfer FPC 11, ZIF interface 12, BTB connector 13, driver PCB board 14, MIPI bridge module 15, power conversion module 16, backlight power supply module 17, Flash memory module 18, avoidance slot 19;
[0036] Display module fixture 2, receiving groove 21, display module 22, back groove 23, FPC 24;
[0037] The limiting element 3 , the sliding plate 31 , the toothed plate 32 , the gear 33 , the limiting plate 34 , the finger groove 35 , the connecting part 36 , the rubber abutting ball 37 , and the finger plate 38 . DETAILED DESCRIPTION
[0038] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0039] As described in the background technology, more and more customers require testing by simulating the angles used by consumers. Most existing testing fixtures do not support testing at any angle, which results in limitations in the actual testing process and easily affects the accuracy of the test. Therefore, a display module testing device is proposed.
[0040] In order to solve this technical problem, the utility model provides a display module detection device, which is applied to the display module.
[0041] Specifically, please refer to Figure 1-Figure 8 , the display module detection device specifically includes:
[0042] A driving board 1 is provided with a ZIF interface 12, the driving board 1 is connected to a transfer FPC 11 through the ZIF interface 12, and one end of the transfer FPC 11 is connected to a BTB connector 13;
[0043] A display module fixture 2, on which a receiving groove 21 is provided for placing a display module 22;
[0044] The back groove 23 is formed on the bottom wall of the receiving groove 21 on the display module fixture 2 , and the FPC 24 on the display module 22 is extended to the outside through the back groove 23 to be connected to the BTB connector 13 on the transfer FPC 11 for detection.
[0045] The display module detection device provided by the utility model places the display module 22 into the display module fixture 2. Since it is connected to the driving board 1 through the flexible adapter FPC11, it can rotate independently, so that the operator can hold the display module fixture 2 to simulate consumers using mobile phones to detect the display screen at any angle, thereby improving the accuracy of the detection.
[0046] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.
[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
[0048] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0049] Please refer to Figure 1-Figure 8 A display module detection device, a driving board 1, a ZIF interface 12 is provided on the driving board 1, the driving board 1 is connected to a transfer FPC 11 through the ZIF interface 12, and one end of the transfer FPC 11 is connected to a BTB connector 13;
[0050] A display module fixture 2, on which a receiving groove 21 is provided for placing a display module 22;
[0051] A back groove 23 is provided on the bottom wall of the receiving groove 21 on the display module fixture 2, and the FPC 24 on the display module 22 is extended to the outside through the back groove 23 to be connected to the BTB connector 13 on the transfer FPC 11 for detection;
[0052] The driving board 1 includes a driving PCB board 14, and the driving PCB board 14 has four to six layers of wiring;
[0053] The driving PCB board 14 is provided with a MIPI bridge module 15, a power conversion module 16, a backlight power supply module 17 and a Flash memory module 18. The MIPI bridge module 15, the power conversion module 16, the backlight power supply module 17 and the Flash memory module 18 are all electrically connected to the driving PCB board 14 to form a driving board 1 for providing detection signals and power supply. The specific structural composition and detection method of the driving board 1 are mature and complete existing technologies and are not further elaborated in this embodiment.
[0054] Please refer to Figure 5 , 6 The length of the transfer FPC11 is between twenty and forty centimeters, and FPC24 is a double-layer flexible circuit board routing. Through the above-mentioned structural design, FPC11 can be bent at any angle in practical applications to meet the detection of the display module 22 in the display module fixture 2 at different angles to ensure the accuracy of the detection, while ensuring the overall strength of FPC11, so that it is not easy to break when bent and used.
[0055] When the display module 22 needs to be tested, the display module 22 to be tested is placed into the display module fixture 2 through the receiving groove 21, and then the FPC 24 is extended to the back of the display module fixture 2 through the back groove 23 on the display module fixture 2, and the BTB connector 13 of the transfer FPC 11 connected to the driving board 1 is connected to the interface end of the FPC 24, so as to provide power and detection signals to the display module 22 to complete the actual detection;
[0056] During the above detection, since the display module 22 and the driving board 1 are independently arranged, they can be rotated at relative angles through the adapter FPC11, so that the operator can hold the display module fixture 2 to simulate consumers using mobile phones to detect the display screen at any angle, thereby improving the accuracy of the detection.
[0057] The display module detection device provided in Example 1 is further optimized. Specifically, Figure 1 , Figure 2 and Figure 3 As shown, the display module fixture 2 is made of bakelite, and an avoidance groove 19 is provided in the display module fixture 2 near the back groove 23 for avoiding the component area on the display module 22 .
[0058] Through the above structural design, since the display module 22 is connected to the FPC 24 and other components are arranged on one side of the FPC 24, in order to ensure that the display module 22 can be placed in the receiving groove 21 to remain stable and flat, the avoidance groove 19 is opened, and at the same time, the back side of the display module 22 is protected to avoid damage caused by rigid extrusion.
[0059] The display module detection device provided in Embodiment 1 or 2 is further optimized. After the display module 22 is placed inside the display module fixture 2 through the receiving groove 21, since the display module 22 is in a freely placed state, when actually detecting it at any angle, the display module 22 may easily be lifted up, and the edge of the lifted display module 22 may protrude from the outside of the display module fixture 2 and produce a rigid conflict therewith, which may easily cause the display module 22 to be damaged. For this reason, the limiting element 3 is provided;
[0060] like Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the display module fixture 2 is provided with a limiting element 3 for limiting the display module 22 placed in the receiving groove 21.
[0061] The limiting element 3 includes a sliding plate 31 slidably arranged on both sides of the display module fixture 2, a tooth plate 32 connected to one side of the sliding plate 31, and a gear 33 meshed between the two tooth plates 32, wherein the sliding plate 31 extends outside the display module fixture 2 and is fixed with a limiting plate 34, and the limiting plate 34 can slide along the length direction of the display module fixture 2, such as Figure 6 As shown, the display module fixture 2 is provided with a through slot for the limit plate 34 to slide, which not only satisfies the sliding of the limit plate 34 along the length direction of the display module fixture 2, but also ensures the stability of the state of the two tooth plates 32 when sliding relative to each other;
[0062] If it is necessary to further increase the stability of the tooth plate 32 when sliding, the bottom of the tooth plate 32 and the bottom of the display module fixture 2 can be designed to be in a relatively sliding state, that is, the tooth plate 32 can slide along the length direction of the display module fixture 2;
[0063] The bottom of the gear 33 is movably connected to the bottom wall of the display module fixture 2 through the shaft seat, and a connecting portion 36 extends upward from the top of the gear 33. The connecting portion 36 passes through the outside of the display module fixture 2 and is fixed with a finger plate 38.
[0064] In the first embodiment, after the display module 22 is placed into the display module fixture 2 through the receiving groove 21 and connected, the finger plate 38 can be rotated to Figure 4 Rotate on Figure 5 In the state shown, the finger plate 38 during the rotation process will drive the connecting part 36 connected thereto to rotate synchronously, and the gear 33 thereon will also rotate when the connecting part 36 rotates. The gear 33 during the rotation process forms a meshing transmission with the tooth plates 32 corresponding to the two sides thereof, and the tooth plates 32 subjected to the meshing action will slide relatively close to each other. During the sliding process, the tooth plates 32 will drive the limit plates 34 thereon to slide synchronously, so that the limit plates 34 slide and cover the surface of the display module 22 at the edge of the display module fixture 2, thereby forming a limit for the display module 22, ensuring that it will not fall outward from the receiving groove 21 during the subsequent detection process, which is conducive to its better protection during detection;
[0065] As a further optimization of this embodiment: the finger plate 38 is provided with a finger groove 35. Through the design of the finger groove 35, the operator can hold the back of the display module fixture 2 with four fingers, and put the thumb on the finger groove 35, so that it can better simulate the habit of consumers when using mobile phones, and it is convenient for them to detect the display screen at any angle. At the same time, through the manipulation of the finger plate 38 by the thumb, it is also convenient to lock or unlock the display module 22;
[0066] As a further optimization of this embodiment: a plurality of rubber contact balls 37 are evenly distributed at the bottom of the finger plate 38 along the circumferential direction of the connecting portion 36, and the plurality of rubber contact balls 37 all form a contact with the corresponding display module fixture 2 below. Through the design of the plurality of rubber contact balls 37, the relative friction between the finger plate 38 and the display module fixture 2 is increased, thereby ensuring that the finger plate 38 will not slide autonomously when there is no external force.
[0067] The use process of the display module detection device provided by the utility model is as follows: the display module 22 to be detected is placed into the interior of the display module fixture 2 through the receiving groove 21, and then the FPC 24 is extended to the back of the display module fixture 2 through the back groove 23 on the display module fixture 2, and the BTB connector 13 of the transfer FPC 11 connected to the driving board 1 is connected to the interface end of the FPC 24, and the finger plate 38 is rotated so that it is Figure 4 Rotate on Figure 5 In the state shown, the finger plate 38 during the rotation process will drive the connecting part 36 connected thereto to rotate synchronously, and the gear 33 thereon will also rotate when the connecting part 36 rotates. The gear 33 during the rotation process forms a meshing transmission with the corresponding tooth plates 32 on both sides thereof, and the tooth plates 32 under the meshing action will slide relatively close to each other. During the sliding process, the tooth plate 32 will drive the limit plate 34 thereon to slide synchronously, so that the limit plate 34 slides at the edge of the display module fixture 2 and covers the surface of the display module 22, thereby forming a limit for the display module 22. At this time, the display module 22 can be detected by the driving plate 1.
[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0069] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.
Claims
1. A display module detection device, characterized in that: It includes: A driving board (1), wherein a ZIF interface (12) is provided on the driving board (1), the driving board (1) is connected to a transfer FPC (11) via the ZIF interface (12), and one end of the transfer FPC (11) is connected to a BTB connector (13); A display module jig (2), wherein a receiving groove (21) is provided on the display module jig (2) for placing a display module (22); A back groove (23) is provided on the bottom wall of the receiving groove (21) on the display module fixture (2), and the FPC (24) on the display module (22) is extended to the outside through the back groove (23) to be connected to the BTB connector (13) on the transfer FPC (11) for detection.
2. The display module detection device according to claim 1, characterized in that: The driving board (1) comprises a driving PCB board (14); The driving PCB board (14) is provided with a MIPI bridge module (15), a power conversion module (16), a backlight power supply module (17) and a Flash memory module (18); the MIPI bridge module (15), the power conversion module (16), the backlight power supply module (17) and the Flash memory module (18) are all electrically connected to the driving PCB board (14) to form the driving board (1) for providing detection signals and power.
3. The display module detection device according to claim 1, characterized in that: The length of the transfer FPC (11) is between twenty and forty centimeters.
4. The display module detection device according to claim 1, characterized in that: The transfer FPC (11) is a double-layer flexible circuit board.
5. The display module detection device according to claim 2, characterized in that: The driving PCB board (14) has four to six layers of wiring.
6. The display module detection device according to claim 1, characterized in that: The display module fixture (2) is made of bakelite, and an avoidance groove (19) is provided in the display module fixture (2) near the back groove (23) for avoiding the component area on the display module (22).
7. The display module detection device according to claim 1, characterized in that: The display module fixture (2) is provided with a limiting element (3) for limiting the position of the display module (22) placed in the receiving groove (21).
8. The display module detection device according to claim 7, characterized in that: The limiting element (3) comprises a sliding plate (31) slidably arranged on both sides of the display module fixture (2), a tooth plate (32) connected to one side of the sliding plate (31), and a gear (33) meshed between the two tooth plates (32); The sliding plate (31) extends outside the display module fixture (2) and is fixed with a limiting plate (34), and the limiting plate (34) can slide along the length direction of the display module fixture (2).
9. The display module detection device according to claim 8, characterized in that: The bottom of the gear (33) is movably connected to the bottom wall of the display module fixture (2) via a shaft seat, and a connecting portion (36) extends upward from the top of the gear (33). The connecting portion (36) passes through the outside of the display module fixture (2) and is fixed with a finger plate (38); The finger plate (38) is provided with a finger groove (35).
10. The display module detection device according to claim 9, characterized in that: A plurality of rubber abutment balls (37) are distributed at equal intervals at the bottom of the finger plate (38) along the circumferential direction of the connecting portion (36), and the plurality of rubber abutment balls (37) all abut against the corresponding display module fixture (2) below.