Display module aging test device

Abstract

The utility model discloses a display module aging test device comprising an HDMI distributor, the HDMI distributor is provided with a plurality of HDMI output interfaces, HDMI input interfaces and HDMI voltage interfaces, the HDMI output interfaces are connected with an HDMI-RGB adapter plate through a first connecting line, the HDMI-RGB adapter plate is connected with a display module through a second connecting line, and the HDMI input interfaces are connected with the HDMI voltage interfaces. A camera is arranged on one side of the display module, and the camera is used for photographing the display module according to a preset time interval. According to the AOI detection principle, the camera is used for photographing the display module, the calculation module compares pictures of the pictures, and if a blank screen or abnormal display or other undesirable phenomena occur on a product, the undesirable phenomena can be fed back to production testing personnel in time through the buzzer or the alarm lamp, so that waste of resources is avoided.

Description

Technical Field

[0001] The utility model relates to an aging test device, more specifically, to a display module aging test device. Background Art

[0002] Automotive products have high reliability requirements. To better select qualified products for shipment to customers, automotive displays undergo high-temperature aging testing before shipment. Inside the high-temperature aging test chamber, the vehicle display module dynamically switches between red / green / blue / black / white display images. Existing display module aging methods use an FPGA backplane to illuminate the module. FPGA chips are expensive and require a long procurement cycle. Using FPGAs for lighting testing requires complex configuration and operation. Furthermore, prolonged exposure to aging conditions can easily damage FPGA chips, resulting in high chip loss.

[0003] Chinese utility model patent document CN207895008U discloses a display module aging test device, including a base plate, a test plate, a pressure head and a circuit adapter board, wherein the test board is arranged on the base plate, including a pad, a heating plate and a cover plate arranged in sequence from bottom to top, and the cover plate is provided with at least one product placement area for placing and heating the display module to be tested; the circuit adapter board is arranged on the base plate, and has an overlapping area with the test board above the pad of the test board; the pressure head is arranged on the overlapping area and is detachably fixed to the base plate, and the pressure head corresponds to the product placement area for pressing with the display module to be tested.

[0004] Apparently, this patent uses the heat generated by the display module's dot-screen detection to heat the test board, which is then transferred to the product surface through the cover plate. This allows for direct high and low temperature aging life testing of the OLED, significantly reducing testing costs. This method cannot solve the high procurement costs of existing FPGAs. Utility Model Content

[0005] Based on this, it is necessary to address the above-mentioned technical issues and provide a display module burn-in test device. The device comprises an HDMI splitter equipped with several HDMI output interfaces, HDMI input interfaces, and HDMI voltage interfaces. The HDMI output interfaces are connected to an HDMI-RGB adapter board via a first cable, and the HDMI-RGB adapter board is connected to the display module via a second cable. A camera is provided on one side of the display module, and the camera takes photos of the display module at preset intervals. The camera takes photos of the display module using the AOI inspection principle. The screen switching time during the burn-in test, i.e., the interval, is generally 2-3 seconds. Due to the relatively long burn-in process, the camera sampling frequency requirement is not high. A computing module then compares the photos. If any product exhibits a black screen or display anomalies, a buzzer or alarm light can be used to promptly provide feedback to production testers. This display module burn-in test device replaces the FPGA backplane used in the high-temperature burn-in process for automotive display modules, effectively reducing burn-in costs and addressing the current difficulty in procuring FPGA chips. It can also promptly detect and provide feedback on defective products during burn-in testing, avoiding wasted resources.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A display module aging test device includes an HDMI distributor, which is provided with a plurality of HDMI output interfaces, an HDMI input interface, and an HDMI voltage interface. The HDMI output interface is connected to an HDMI-RGB adapter board via a first connecting line, and the HDMI-RGB adapter board is connected to a display module via a second connecting line. A camera is provided on one side of the display module, and the camera takes pictures of the display module at preset intervals.

[0008] As a preferred embodiment of the display module aging test device provided by the present invention, the HDMI input interface is connected to a computer.

[0009] As a preferred embodiment of the display module aging test device provided by the present invention, the display module is arranged in an aging test box.

[0010] As a preferred embodiment of the display module aging test device provided by the present invention, the camera is connected to a computing module, and an alarm device is provided on the computing module.

[0011] As a preferred embodiment of the display module aging test device provided by the present invention, the alarm device is a buzzer and / or an alarm light.

[0012] A display module aging test device includes an HDMI distributor, which is provided with a plurality of HDMI output interfaces, an HDMI input interface, and an HDMI voltage interface. The HDMI output interface is connected to an HDMI-RGB adapter board via a first connecting line, the HDMI-RGB adapter board is connected to an RGB-LVDS adapter board via a third connecting line, the RGB-LVDS adapter board is connected to a display module via a fourth connecting line, and a camera is provided on one side of the display module. The camera takes pictures of the display module at preset intervals.

[0013] As a preferred embodiment of the display module aging test device provided by the present invention, the HDMI input interface is connected to a computer.

[0014] As a preferred embodiment of the display module aging test device provided by the present invention, the display module is arranged in an aging test box.

[0015] As a preferred embodiment of the display module aging test device provided by the present invention, the camera is connected to a computing module, and an alarm device is provided on the computing module.

[0016] As a preferred embodiment of the display module aging test device provided by the present invention, the alarm device is a buzzer and / or an alarm light.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model provides a display module aging test device that utilizes the AOI (Automated Optical Inspection) inspection principle to photograph the display module with a camera. The screen switching time during the aging test, or the interval between screen changes, is typically 2 to 3 seconds. Because the aging process is relatively long, the camera's sampling frequency requirement is not high. A computing module then compares the images. If any product exhibits undesirable phenomena such as a black screen or display anomalies, prompt feedback is provided to production testers via a buzzer or alarm light.

[0019] In addition, the HDMI output interface can be connected to the HDMI-RGB adapter board via a first connection line, the HDMI-RGB adapter board is connected to the RGB-LVDS adapter board via a third connection line, and the RGB-LVDS adapter board is connected to the display module via a fourth connection line. During the test, the HDMI input interface is connected to the PPT slides through the computer, the HDMI-RGB adapter board converts the HDMI signal into an RGB signal, and the RGB-LVDS adapter board converts the RGB signal into an LVDS signal to the display module. At the same time, the RGB-LVDS adapter board provides driving voltage for the display module, and the display module components are subjected to aging tests.

[0020] In addition, the calculation module can be a computer or an integrated single chip microcomputer. Using the computer or the integrated single chip microcomputer, real-time calculation can be effectively performed to perform aging tests on the display module components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of the display module aging test device of the present invention;

[0023] Figure 2 This is a structural diagram of another embodiment of the display module aging test device of the present invention;

[0024] The markings in the figure are as follows: 1. HDMI distributor; 2. HDMI output interface; 3. HDMI input interface; 4. HDMI voltage interface; 5. HDMI-RGB adapter board; 6. Display module; 7. RGB-LVDS adapter board; B. Aging test chamber; C. Computing module; C1. Buzzer; C2. Alarm light; L1. First connecting line; L2. Second connecting line; L3. Third connecting line; L4. Fourth connecting line; S. Camera. DETAILED DESCRIPTION

[0025] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0026] As described in the background technology, existing technologies have relatively high reliability requirements for automotive products. To better screen qualified products for shipment to customers, automotive display screens must undergo high-temperature aging testing before shipment. Inside the high-temperature aging test chamber, the vehicle display module dynamically switches between red / green / blue / black / white display images. Existing display module aging methods use an FPGA backplane to illuminate the module. FPGA chips are expensive and require a long procurement cycle. Using an FPGA for lighting testing requires configuring the FPGA, which is also complex to operate. Furthermore, FPGA chips are susceptible to damage when exposed to aging conditions for extended periods, resulting in high chip loss.

[0027] In order to solve this technical problem, the present invention provides a display module aging test device including an HDMI distributor 1. The HDMI distributor 1 is provided with a plurality of HDMI output interfaces 2, an HDMI input interface 3, and an HDMI voltage interface 4. The HDMI output interface 2 is connected to an HDMI-RGB adapter board 5 via a first connection line L1, and the HDMI-RGB adapter board 5 is connected to a display module 6 via a second connection line L2. A camera S is provided on one side of the display module 6, and the camera S takes pictures of the display module 6 at preset intervals. The HDMI input interface 3 is connected to a computer. The display module 6 is set in an aging test chamber B. The camera S is connected to a computing module C, and the computing module C is provided with an alarm device. The alarm device is a buzzer C1 and / or an alarm light C2.

[0028] Through the above structural design, the HDMI input interface 3 is connected to the PPT slides through the computer, and the HDMI-RGB adapter board 5 converts the HDMI signal into an RGB signal to the display module 6. At the same time, the HDMI-RGB adapter board 5 provides a driving voltage for the display module 6 to perform an aging test on the display module assembly. Using the AOI detection principle, the display module 6 is photographed with a camera S. The aging test screen switching time, that is, the interval time, is generally 2 to 3 seconds. Since the aging process time is relatively long, the sampling frequency requirement of the camera is not high. Then, the calculation module C compares the photo images. If a product has a black screen or display abnormality and other adverse phenomena, it can be promptly fed back to the production test personnel through the buzzer C1 or the alarm light C2.

[0029] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0031] 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, it does not require further definition or explanation in subsequent drawings.

[0032] Example 1

[0033] like Figure 1 As shown, the display module aging test device includes an HDMI distributor 1, which is provided with several HDMI output interfaces 2, HDMI input interfaces 3 and HDMI voltage interfaces 4. The HDMI output interface 2 is connected to the HDMI-RGB adapter board 5 through a first connection line L1, and the HDMI-RGB adapter board 5 is connected to the display module 6 through a second connection line L2. A camera S is provided on one side of the display module 6, and the camera S takes pictures of the display module 6 at preset intervals.

[0034] It should be noted that the HDMI input interface 3 is connected to a computer.

[0035] In addition, the display module 6 is arranged in the aging test box B.

[0036] In addition, the camera S is connected to a computing module C, and an alarm device is provided on the computing module C. The alarm device is a buzzer C1 and / or an alarm light C2.

[0037] The working mode of this embodiment is described below.

[0038] The HDMI input interface 3 is connected to the PPT slides through the computer, and the HDMI-RGB adapter board 5 converts the HDMI signal into an RGB signal to the display module 6. At the same time, the HDMI-RGB adapter board 5 provides a driving voltage for the display module 6 to perform an aging test on the display module components.

[0039] Using AOI inspection principles, camera S takes photos of display module 6. The screen switching time during the burn-in test, or the interval between screen changes, is typically 2-3 seconds. Because the burn-in process is relatively long, the camera's sampling frequency requirement is not high. Computing module C then compares the images. If any product exhibits a black screen or display anomalies, for example, feedback is promptly provided to production testers via buzzer C1 or alarm light C2.

[0040] This display module aging test device replaces the FPGA baseboard in the high-temperature aging process of the vehicle display module, effectively reducing the aging cost, solving the current problem of the inability to purchase FPGA chips, and can promptly detect and feedback defective products in the aging test to avoid wasting resources.

[0041] Example 2

[0042] like Figure 2 As shown, the display module aging test device includes an HDMI distributor 1, which is provided with several HDMI output interfaces 2, HDMI input interfaces 3 and HDMI voltage interface 4. The HDMI output interface 2 is connected to the HDMI-RGB adapter board 5 through a first connecting line L1, and the HDMI-RGB adapter board 5 is connected to the RGB-LVDS adapter board 7 through a third connecting line L3. The RGB-LVDS adapter board 7 is connected to the display module 6 through a fourth connecting line L4. The display module 6 is connected, and a camera S is provided on one side of the display module 6. The camera S takes pictures of the display module 6 at preset intervals.

[0043] It should be noted that the HDMI input interface 3 is connected to a computer.

[0044] In addition, the display module 6 is arranged in the aging test chamber B. The camera S is connected to the computing module C, and the computing module C is provided with an alarm device, which is a buzzer C1 and / or an alarm light C2.

[0045] The working mode of this embodiment is described below.

[0046] The HDMI input interface 3 is connected to the PPT slides through the computer, the HDMI-RGB adapter board 5 converts the HDMI signal into an RGB signal, and the RGB-LVDS adapter board 7 converts the RGB signal into an LVDS signal to the display module 6. At the same time, the RGB-LVDS adapter board 7 provides a driving voltage for the display module 6, and performs an aging test on the display module components.

[0047] Using AOI inspection principles, camera S takes photos of display module 6. The screen switching time during the burn-in test, or the interval between screen changes, is typically 2-3 seconds. Because the burn-in process is relatively long, the camera's sampling frequency requirement is not high. Computing module C then compares the images. If any product exhibits a black screen or display anomalies, for example, feedback is promptly provided to production testers via buzzer C1 or alarm light C2.

[0048] Example 3

[0049] The display module aging test device provided in Example 1 or 2 is further optimized. Specifically, the computing module C is a computer or an integrated single-chip microcomputer.

[0050] The working mode of this embodiment is described below.

[0051] Using a computer or an integrated single-chip microcomputer, real-time calculations can be effectively performed to perform aging tests on display module components.

[0052] The terms "coupling" and "coupling" involved in the embodiments of this application should be understood in a broad sense. For example, they may refer to a physical direct connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0053] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0054] Obviously, the embodiments described above are only some of the embodiments of the present application, rather than all of the embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application 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 present application more thorough and comprehensive. Although the present application has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present application specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present application.

Claims

1. A display module aging test device, characterized in that: The display module aging test device comprises an HDMI distributor (1), the HDMI distributor (1) being provided with a plurality of HDMI output interfaces (2), an HDMI input interface (3) and an HDMI voltage interface (4), the HDMI output interface (2) being connected to an HDMI-RGB adapter board (5) via a first connection line (L1), the HDMI-RGB adapter board (5) being connected to a display module (6) via a second connection line (L2), a camera (S) being provided on one side of the display module (6), the camera (S) taking pictures of the display module (6) at preset intervals.

2. The display module aging test device according to claim 1, characterized in that: The HDMI input interface (3) is connected to a computer.

3. The display module aging test device according to claim 1, characterized in that: The display module (6) is arranged in an aging test box (B).

4. The display module aging test device according to claim 1, characterized in that: The camera (S) is connected to a computing module (C), and an alarm device is provided on the computing module (C).

5. The display module aging test device according to claim 4, characterized in that: The alarm device is a buzzer (C1) and / or an alarm light (C2).

6. A display module aging test device, characterized in that: The display module aging test device comprises an HDMI distributor (1), wherein the HDMI distributor (1) is provided with a plurality of HDMI output interfaces (2), an HDMI input interface (3) and an HDMI voltage interface (4), wherein the HDMI output interface (2) is connected to an HDMI-RGB adapter board (5) via a first connection line (L1), wherein the HDMI-RGB adapter board (5) is connected to an RGB-LVDS adapter board (7) via a third connection line (L3), wherein the RGB-LVDS adapter board (7) is connected to a display module (6) via a fourth connection line (L4), wherein a camera (S) is provided on one side of the display module (6), wherein the camera (S) takes photos of the display module (6) at a preset interval.

7. The display module aging test device according to claim 6, characterized in that: The HDMI input interface (3) is connected to a computer.

8. The display module aging test device according to claim 6, characterized in that: The display module (6) is arranged in an aging test box (B).

9. The display module aging test device according to claim 6, characterized in that: The camera (S) is connected to a computing module (C), and an alarm device is provided on the computing module (C).

10. The display module aging test device according to claim 9, characterized in that: The alarm device is a buzzer (C1) and / or an alarm light (C2).

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