Display module test fixture

Abstract

The utility model relates to a display module test fixture which is high in adaptability and low in cost, is suitable for display modules of different models, can reduce the development cycle of the display modules, and is composed of a module adapter plate and a control panel, and the module adapter plate is provided with an adapter plate interface and diversified pin interfaces so as to adapt to the connection requirements of different modules; the control panel is integrated with a control module, a peripheral circuit interface group, a module input and output interface group, a module power interface group and the like, and accurate control and efficient data transmission of the test are ensured. Through the modular design, rapid adaptation and testing of different models of display modules are realized, and independent development of testing equipment for each new module is not needed, so that the development period is remarkably shortened, and the research and development cost is reduced. In addition, the method has the advantages of being easy to operate, easy and convenient to maintain, high in expandability and the like, and an efficient and flexible test solution is provided for research, development and production in the technical field of display.

Description

Technical Field

[0001] The present application relates to the technical field of display module testing, and particularly to a display module testing fixture. Background Art

[0002] With the rapid development of display technology, OLED (Organic Light-Emitting Diode) modules, as an advanced display device, have been widely used in fields such as smart phones, tablet computers, and televisions due to their high contrast ratio, high brightness, fast response, and low energy consumption. The basic structure of an OLED module consists of a glass substrate, organic light-emitting materials, a packaging cover, a driving IC, an FPC (Flexible Printed Circuit), and other auxiliary materials. The precise cooperation and efficient testing of these components are crucial for ensuring the product quality of OLED modules.

[0003] During the production process of OLED modules, the lighting test is a key link for evaluating the screen performance. The lighting test mainly detects whether there are defects or abnormal phenomena in the module by applying a specific current signal to the OLED module to make it emit light and display various images. However, the existing lighting test fixtures for OLED modules generally consist of four parts: a control board, a connection cable, a control board adapter board, and a module adapter board. Among them, the control board, connection cable, and control board adapter board are general fixtures and can be reused. However, due to differences in the interface method and the number of pins of different models of modules, it is necessary to design a dedicated module adapter board for each type of module, which undoubtedly increases the complexity and cost of the test fixture.

[0004] Specifically, whenever a new OLED module sample needs to be tested, a dedicated module adapter board needs to be designed and manufactured according to the specifications of the module. This process usually takes 1 to 2 weeks from design outsourcing to factory return, which greatly extends the development cycle of new products. In addition, since the number of module samples required by customers in the sample stage is generally small (usually ≤ 50 pcs), and the customer may not decide on mass production after sending the samples, designing and outsourcing module adapter boards for each sample in the sample preparation stage not only increases the development cost but also poses a risk of resource waste.

[0005] Therefore, how to design a test fixture that can adapt to different models of OLED modules and reduce the development cycle and cost has become an urgent problem to be solved in this technical field. Summary of the Utility Model

[0006] The purpose of the present application is to provide a display module testing fixture that can adapt to different models of display modules and reduce the development cycle and cost of display modules. The display module testing fixture in the present application includes a module adapter board and a control board;

[0007] The module adapter board includes an adapter board interface and a plurality of pin interfaces, and the plurality of pin interfaces are all connected to the adapter board interface within the module adapter board;

[0008] The control board includes a control module, a control board interface, a power interface, and a peripheral circuit interface. The control board interface includes a peripheral circuit interface group, a module input / output interface group, and a module power interface group. The peripheral circuit interface group is connected to the peripheral circuit within the control board, and the module input / output interface group is connected to the control module within the control board;

[0009] Wherein, the adapter board interface and the control board interface are connected by a connecting wire.

[0010] In one embodiment, the control module includes a control module interface, an MCU control unit, and a conversion circuit unit.

[0011] In one embodiment, the peripheral circuit interface is connected to the input end of the conversion circuit unit.

[0012] In one embodiment, the output end of the conversion circuit unit is connected to the MCU control unit and the module power interface group.

[0013] In one embodiment, the peripheral circuit interface includes a part directly connected to the module power interface group.

[0014] In one embodiment, the number of pins of the adapter board interface and the control board interface is greater than or equal to 40.

[0015] In one embodiment, the types of each of the plurality of pin interfaces are different.

[0016] In one embodiment, the module adapter board further includes positioning post holes.

[0017] In one embodiment, the conversion circuit unit is a DC-DC conversion circuit.

[0018] In one embodiment, the control module interface, the MCU control unit, and the conversion circuit unit are packaged into an independent module.

[0019] Compared with the prior art, the present application has the following beneficial effects: The module adapter board in the present application is designed with an adapter board interface and multiple types of pin interfaces, which can flexibly adapt to the connection requirements of the vast majority of display modules in the market. Combined with the rich interface configuration in the control board (including the peripheral circuit interface group, the module input / output interface group, the module power interface group, etc.), the test fixture can easily handle the test tasks of different models of display modules, improving the versatility and flexibility of the test. Through modular design, the test fixture of the present application can quickly adapt to the test requirements of different display modules without the need to develop new test equipment for each new model separately, thus significantly shortening the development cycle and reducing the R & D cost. The control module is built with an MCU control unit and a conversion circuit unit (such as a DC-DC conversion circuit), which can accurately control parameters such as voltage and current during the test process to ensure the accuracy and reliability of the test results. In addition, through the precise docking of the control board interface and the module adapter board, high-speed transmission and processing of test signals are achieved, improving the test efficiency. By reserving a sufficient number of interfaces and flexible circuit design, the test fixture of the present application reserves sufficient space for possible future new functions or upgrade requirements. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a display module test fixture in an embodiment of the present application.

[0021] Description of the reference numerals: 100, module adapter board; 110, adapter board interface; 120, pin interface; 130, positioning post hole; 200, control board; 210, control module; 211, control module interface; 212, MCU control unit; 213, conversion circuit unit; 220, control board interface; 221, peripheral circuit interface group; 222, module input / output interface group; 223, module power interface group; 230, power interface; 240, peripheral circuit interface; 300, connecting line. Detailed Embodiments

[0022] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed embodiments of the present application in conjunction with the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Additionally, it should be noted that for the sake of description, only parts related to the present application are shown in the drawings rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0023] The terms "comprise" and "have" and any variations thereof in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally further comprises steps or units not listed, or optionally further comprises other steps or units inherent to these processes, methods, products or devices.

[0024] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] Please refer to Figure 1 , a display module test fixture in a preferred embodiment of the present application, which is suitable for detecting different models of display modules to reduce the development cycle and test cost. The display module test fixture includes a module adapter board 100 and a control board 200;

[0026] The module adapter board 100 includes an adapter board interface 110 and a plurality of pin interfaces 120. The plurality of pin interfaces 120 are all connected to the adapter board interface 110 within the module adapter board 100. As an interface bridge of the test fixture, the module adapter board 100 integrates the adapter board interface 110 and a series of pin interfaces 120. The number and type of the pin interfaces 120 can cover various types of interfaces currently available. Through reasonable layout, it can ensure docking with the display module to be tested. Inside the module adapter board 100, each pin interface 120 is directly and reliably connected to the adapter board interface 110 through a fine circuit design, realizing signal or power transmission. In addition, the module adapter board 100 can be manufactured using highly durable materials to ensure performance.

[0027] The control board 200 includes a control module 210, a control board interface 220, a power interface 230 and a peripheral circuit interface 240. The control board interface 220 includes a peripheral circuit interface group 221, a module input and output interface group 222, and a module power interface group 223. The peripheral circuit interface group 221 is connected to the peripheral circuit interface 240 in the control board 200, and the module input and output interface group 222 is connected to the control module 210 in the control board 200. As the "brain" of the test fixture, the control board 200 integrates a variety of functional modules, including but not limited to the control module 210, the control board interface 220, the power interface 230 and the peripheral circuit interface 240. The control module 210 is responsible for the logical control of the entire test process to ensure the orderly progress of the test steps. The control board interface 220 is further subdivided into a peripheral circuit interface group 221, a module input and output interface group 222 and a module power interface group 223, and these interface groups correspond to different test requirements. The peripheral circuit interface group 221 is used to connect external test equipment or auxiliary circuits, and the module input and output interface group 222 is directly connected to the module adapter board 100 to achieve two-way transmission of test signals. The module power interface group 223 is responsible for providing a stable power supply for the display module to be tested. Through such a design, the control board 200 can fully and flexibly support the testing requirements of various display modules.

[0028] Among them, the adapter board interface 110 and the control board interface 220 are connected via a connecting line 300, and a high-reliability connecting line 300 is used to connect the adapter board interface 110 and the control board interface 220. This connection method not only ensures the stability and integrity of signal transmission, but also facilitates the assembly and maintenance of the test fixture. At the same time, the selection of the connecting line 300 also fully considers electromagnetic compatibility and anti-interference ability to ensure the accuracy of the test results.

[0029] The technical solution of the present application can improve test efficiency. Through a highly integrated modular design, it reduces human intervention and equipment replacement times during the test process, thereby significantly improving test efficiency. Enhanced test accuracy: The precise pin interface 120 layout and the highly reliable connection mechanism ensure the stable transmission of the test signal and reduce test errors caused by poor contact or signal interference. Improved versatility and flexibility: The separate design of the module adapter board 100 and the control board 200 enables the test fixture to easily adapt to the testing requirements of display modules of different specifications and models, improving the versatility and flexibility of the fixture. Reduced maintenance costs: The modular design makes the maintenance and upgrade of the test fixture easier and more cost-effective, reducing downtime and maintenance costs caused by equipment failure.

[0030] Specifically, the control module 210 includes a control module interface 211, an MCU control unit 212, and a conversion circuit unit 213. As the core control unit of the system, the control module 210 integrates a control module interface 211, a high-performance MCU (micro control unit) control unit, and a precision conversion circuit unit 213, realizing efficient reception, processing, and output control of external signals. The interface is designed to be multi-protocol compatible, supporting multiple communication methods including serial communication (such as SPI, I2C), parallel interfaces, and custom protocols, ensuring seamless docking with different peripherals or superior systems. The interface adopts high-speed data transmission technology, effectively reducing data transmission latency and improving the system response speed. In addition, the interface also has overvoltage and overcurrent protection mechanisms to ensure electrical safety during data transmission. Using an embedded microprocessor with advanced manufacturing processes as the core, integrating a high-performance CPU, a large-capacity storage unit, and rich peripheral interfaces, the MCU control unit 212 is responsible for executing complex control algorithms such as PID control and fuzzy control, realizing real-time monitoring and precise regulation of the system state. Its low-power design extends the overall working time of the system, while its powerful data processing ability ensures the rapid execution and optimized adjustment of control strategies. The unit may also include an analog-to-digital converter (ADC) and a digital-to-analog converter (DAC), as well as necessary filtering, amplification, and isolation circuits. The ADC is responsible for accurately converting the analog signals from sensors into digital signals for the MCU to process; while the DAC converts the digital control signals output by the MCU into analog signals to drive the actuators. The conversion circuit unit 213 adopts a high-precision and low-noise design to ensure the accuracy and stability during signal conversion.

[0031] Specifically, the peripheral circuit interface 240 is connected to the input end of the conversion circuit unit 213. The peripheral circuit interface 240, as the bridge for the system to interact with external devices, is directly connected to the input end of the conversion circuit unit 213. This configuration not only simplifies the system architecture but also significantly improves the efficiency and accuracy of data transmission. The peripheral circuit interface 240 adopts a standardized design, supporting various signal types and electrical characteristics, including but not limited to analog signals, digital signals, differential signals, etc., ensuring compatibility with a wide range of peripheral devices. The interface internally integrates signal conditioning circuits such as limiting, filtering, and level conversion to adapt to the output characteristics of different peripheral devices, reducing signal distortion and noise interference. Directly connected to the input end of the conversion circuit unit 213, the original signals received from peripheral devices can be transmitted to the conversion circuit along the shortest path, reducing signal attenuation and interference during transmission.

[0032] Specifically, the output terminal of the conversion circuit unit 213 is connected to the MCU control unit 212 and the module power interface group 223. The output terminal of the conversion circuit unit 213 is also directly connected to the module power interface group 223, providing a stable and reliable power supply for each functional module within the system. This design makes power management more centralized and efficient, reducing the complexity of power lines and potential interference sources. The module power interface group 223 can flexibly allocate and adjust the power output according to the actual requirements of each module, ensuring the normal operation of all parts of the system. The module power interface group 223 is directly powered by the conversion circuit unit 213, achieving centralized and efficient power management, which helps to reduce power consumption, lower system heat generation, and improve the stability and reliability of the power supply.

[0033] Specifically, the peripheral circuit interface 240 includes a part directly connected to the module power interface group 223. The part of the peripheral circuit interface 240 directly connected to the module power interface group 223 adopts a low-impedance and high-reliability connection method to ensure low loss and low noise of the power signal during transmission. The direct connection avoids unnecessary power conversion or distribution links, thereby reducing system power consumption and improving power utilization efficiency. At the same time, this design also takes into account the diversity and compatibility requirements of the module power interface 230. The peripheral circuit interface 240 ensures seamless docking with different module power interface groups 223 by integrating multiple types of power interfaces 230 or adopting a configurable design scheme, not only enhancing the flexibility of the system but also facilitating subsequent system expansion and upgrade.

[0034] Specifically, the number of pins of the adapter board interface 110 and the control board interface 220 is greater than or equal to 40. The design of having greater than or equal to 40 pins for the adapter board interface 110 and the control board interface 220 provides the system with rich electrical connection channels, enabling the system to be compatible with more types of peripheral devices and control systems. The abundant pin resources provide sufficient interface support for the subsequent expansion of the system. It improves data transmission efficiency. The parallel transmission ability of multiple pins makes the data exchange within the system more efficient and fast, which helps to reduce data transmission delay and error. The rich pin resources also promote the modularization of system design. By designing different functional modules as independent units and connecting them through interfaces, the design and maintenance work of the system can be simplified.

[0035] Specifically, the types of each of the multiple pin interfaces 120 are different. To maximize the flexibility and adaptability of the system, this application adopts a diversified interface type configuration for the multiple pin interfaces 120, ensuring that the types of each pin interface 120 are different. The diversified types of pin interfaces 120 enable the system to flexibly configure and expand functional modules according to different application scenarios and requirements, which can be achieved by selecting appropriate pin interfaces 120 without large-scale modification of the entire system. The uniqueness of each pin interface 120 type enables the system to easily be compatible with various external devices or systems.

[0036] Specifically, the module adapter board 100 further includes positioning post holes 130. The positioning post holes 130 are designed according to the interface layout of the module adapter board 100 and the module or main board to be connected, ensuring accurate docking during the assembly process.

[0037] Specifically, the conversion circuit unit 213 is a DC-DC conversion circuit. The DC-DC conversion circuit can effectively convert one DC voltage level to another DC voltage level to meet the specific voltage requirements of different electronic components or subsystems. Further, through an internal feedback mechanism, the DC-DC conversion circuit can accurately adjust the output voltage to a preset value, maintaining the stability and accuracy of the output voltage. Since the DC-DC conversion circuit can receive an input voltage within a certain range and convert it into the required output voltage, it has strong flexibility and adaptability and can meet the voltage requirements in different application scenarios.

[0038] Specifically, the control module interface 211, the MCU control unit 212, and the conversion circuit unit 213 are packaged into an independent module. By tightly integrating the control module interface 211, the MCU control unit 212, and the conversion circuit unit 213 into the same module, the physical connections and signal transmission paths between components are reduced, thereby reducing the risk of signal attenuation and interference and improving the overall performance of the system. This independent module is designed with standardized input and output interfaces, facilitating seamless docking with other systems or devices and enhancing the compatibility and scalability of the system.

[0039] As can be seen from the above, this application proposes an innovative display module test fixture. Through the concept of highly modular and flexible design, this fixture has successfully solved many drawbacks of traditional test fixtures in terms of compatibility, development cycle, and cost. The core of this application lies in its unique module adapter board and control board structure. The module adapter board integrates diverse pin interfaces and adapter board interfaces, enabling flexible adaptation to different models and specifications of display modules, thus greatly expanding the application scope of the test fixture. The control board integrates a control module, a rich set of interfaces (including peripheral circuit interfaces, module input / output interfaces, module power interfaces, etc.), and necessary power interfaces, ensuring precise control and efficient data transmission during the test process. Considering the heat that may be generated by the MCU and conversion circuit unit during operation, an efficient heat dissipation structure can also be integrated inside this module to ensure stability and reliability under long-term high-load operation.

[0040] This application realizes the rapid upgrade and adaptation of the test fixture through modular design, eliminating the need to develop new test equipment for each new model of display module, thus significantly shortening the development cycle and reducing the R & D cost. At the same time, this modular setup method also facilitates subsequent maintenance and upgrade, further reducing the long-term operation cost. In addition, the built-in MCU control unit and conversion circuit unit (such as DC-DC conversion circuit) in the control module ensure the precise control and efficient processing of test signals, improving the accuracy and reliability of the test. In summary, the display module test fixture of this application, with its wide compatibility, high test ability, easy operation and maintenance characteristics, and scalability, provides strong support for the R & D and production in the display technology field. It not only meets the current market demand for rapid iteration and low-cost testing but also reserves space for the future development of display technology.

[0041] The above is only a specific implementation manner of this application. Any improvement made on the premise of the concept of this application is regarded as the protection scope of this application.

Claims

1. A display module test fixture, characterized in that: It comprises a module adapter plate (100) and a control plate (200); The module adapter board (100) comprises an adapter board interface (110) and a plurality of pin interfaces (120), wherein the plurality of pin interfaces (120) are all connected to the adapter board interface (110) in the module adapter board (100); The control panel (200) comprises a control module (210), a control panel interface (220), a power interface (230) and a peripheral circuit interface (240); the control panel interface (220) comprises a peripheral circuit interface group (221), a module input / output interface group (222) and a module power interface group (223); the peripheral circuit interface group (221) is connected to the peripheral circuit interface (240) in the control panel (200), and the module input / output interface group (222) is connected to the control module (210) in the control panel (200); The adapter board interface (110) and the control board interface (220) are connected via a connecting line (300).

2. The display module test fixture according to claim 1, characterized in that: The control module (210) comprises a control module interface (211), an MCU control unit (212) and a conversion circuit unit (213).

3. The display module test fixture according to claim 2, characterized in that: The peripheral circuit interface (240) is connected to an input end of the conversion circuit unit (213).

4. The display module test fixture according to claim 3, characterized in that: The output end of the conversion circuit unit (213) is connected to the MCU control unit (212) and the module power interface group (223).

5. The display module test fixture according to claim 3, characterized in that: The peripheral circuit interface (240) comprises a portion directly connected to the module power interface group (223).

6. The display module test fixture according to claim 1, characterized in that: The adapter board interface (110) and the control board interface (220) have greater than or equal to 40 pins.

7. The display module test fixture according to claim 1, characterized in that: The type of each interface in the plurality of pin interfaces (120) is different.

8. The display module test fixture according to claim 1, characterized in that: The module adapter plate (100) further comprises a positioning column hole (130).

9. The display module test fixture according to claim 2, characterized in that: The conversion circuit unit (213) is a DC-DC conversion circuit.

10. The display module test fixture according to claim 2, characterized in that: The control module interface (211), the MCU control unit (212) and the conversion circuit unit (213) are packaged into an independent module.

Images