MIPI interface liquid crystal screen testing device driven by single-chip microcomputer

Abstract

The utility model discloses an MIPI interface liquid crystal screen testing device driven by a single-chip microcomputer, which comprises a power supply module, the output end of the power supply module is electrically connected with an MCU module, a TFT-LCD drawing acceleration chip module, a TFT display screen and an interface module of the TFT display screen, the MCU module is electrically connected with a storage module, and the storage module is electrically connected with a power supply module. The MCU module can develop a test program through the storage module and realize connection and control of the TFT-LCD drawing acceleration chip module and the TFT display screen, and the TFT-LCD drawing acceleration chip module is electrically connected with the MCU module and receives and processes image data of the MCU module. When the MIPI interface liquid crystal screen testing device driven by the single chip microcomputer is used, under the synchronous cooperation of the whole structure, the MIPI interface liquid crystal screen testing device driven by the single chip microcomputer is low in cost and easy to manufacture and maintain, batch aging tests of MIPI display screens are facilitated, high cost and limitation of a testing scheme in the traditional testing process are avoided, and therefore the MIPI interface liquid crystal screen testing device has the advantage of being convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid crystal display screen test technical field, concretely is a kind of MCU-driven MIPI interface liquid crystal screen testing device. BACKGROUND

[0002] MCU-driven MIPI interface liquid crystal screen testing device is a kind of equipment specially used to test the performance of MIPI interface liquid crystal screen, it generates and sends test signal to MIPI interface liquid crystal screen by MCU control system, and receives and handles the feedback signal of liquid crystal screen, to realize the test and evaluation of the key performance indicators such as display effect, response time, brightness uniformity of liquid crystal screen, to ensure the quality and stability of liquid crystal screen.

[0003] As Chinese patent network patent application No. 201920280392.X, a kind of low-cost liquid crystal screen testing device is disclosed, the device includes microcontroller U1, with the signal bridging chip U2 of the microcontroller U1 SPI interface connection and the LCM interface P1 of the signal bridging chip U2 MIPI interface connection;The LCM interface P1 is used to connect the liquid crystal screen to be tested.The liquid crystal display screen testing device provided by the utility model is constituted by microcontroller, signal bridging chip U2 and LCM interface P1, realizes the liquid crystal screen test at the same time, simplifies circuit structure, reduces cost.

[0004] In the use process of MIPI interface display screen test scheme, its existing MIPI interface display screen test scheme adopts traditional test method, it usually relies on high-end controller or FPGA and other complex chips to drive display screen, these schemes are powerful, but there are problems of high cost, long development cycle, maintenance difficulty and resource waste.

[0005] Therefore, the MCU-driven MIPI interface liquid crystal screen testing device needs to be designed and reformed, to effectively prevent the phenomenon of high cost, long development cycle, maintenance difficulty and resource waste. UTILITY MODEL CONTENT

[0006] To solve the problems raised in the above background art, the purpose of the utility model is to provide a kind of MCU-driven MIPI interface liquid crystal screen testing device, with the advantage of being easy to use, solve the problems of high cost, long development cycle, maintenance difficulty and resource waste.

[0007] To achieve the above object, the utility model provides the following technical scheme: A single-chip microcomputer driven MIPI interface LCD screen testing arrangement, including power module, the output of power module is electrically connected with MCU module, TFT - LCD drawing acceleration chip module and TFT display screen and its interface module, the MCU module is electrically connected with storage module, the MCU module can develop test procedure through storage module and realizes the connection and control of TFT - LCD drawing acceleration chip module and TFT display screen, TFT - LCD drawing acceleration chip module and MCU module are electrically connected with each other and receive the image data of MCU module and handle, TFT display screen and TFT - LCD drawing acceleration chip module are electrically connected with each other, the TFT display screen can convert the RGB format data of TFT - LCD drawing acceleration chip module output into the data stream of MIPI interface standard, the TFT display screen is electrically connected with interface module, the interface module includes MIPI - DSI interface, RGB interface and debugging interface, the debugging interface can be convenient for engineer to program and online debugging.

[0008] As the utility model prefers, the output of the power module is electrically connected with a filter module, the output of the filter module is electrically connected with the input of the MCU module, the TFT - LCD drawing acceleration chip module and the TFT display screen and its interface module, the filter module can remove the high-frequency noise and interference in the power supply, thereby ensuring the purity of the power output.

[0009] As the utility model prefers, the MCU module is installed with a real-time operating system, the real-time operating system can uniformly manage the software resources of the testing device, thereby improving the real-time performance and response speed of the testing process.

[0010] As the utility model prefers, the real-time operating system is installed with a remote module, the remote module can be remotely connected and controlled through a network, realizing remote testing and monitoring functions.

[0011] As the utility model prefers, the MCU module is installed with an automatic testing script, the MCU module can realize the automation of the testing process through the automatic testing script, thereby improving the testing efficiency.

[0012] As the utility model prefers, the storage module is installed with an oscilloscope, the oscilloscope can monitor the signal waveform output by the MIPI interface LCD screen testing device during the calibration process, ensuring that it meets the expected specifications and standards.

[0013] Compared with the prior art, the utility model has the beneficial effects as follows:

[0014] 1、The utility model discloses a MCU module, TFT-LCD drawing acceleration chip module and TFT display screen and the interface module of its cooperative work have realized the comprehensive test of MIPI interface liquid crystal screen. This structure has guaranteed the accuracy and reliability of test.

[0015] 2、The utility model discloses an increase filtering module can remove the high frequency noise and interference in power supply, guarantee the purity of power output. This helps to reduce the error in the test process, improves the accuracy of test.

[0016] 3、The utility model discloses a real -time operating system of installation can unified management test device's software resources, improves the real -time performance and response speed of test process. This makes test device can process data more quickly, shortens the test cycle.

[0017] 4、The utility model discloses a remote module is set up, and it allows to carry out remote connection and control through the network, realizes remote test and monitoring function. This provides great convenience for engineers, and they can monitor test progress in remote location, and even carry out necessary adjustment.

[0018] 5、The utility model discloses an automatic test script of installation on MCU module can automatically execute test process, improves test efficiency. This reduces the need for manual intervention, reduces test cost and ensures the consistency and repeatability of test.

[0019] 6、The utility model discloses an oscilloscope of installation in storage module can monitor the signal waveform of MIPI interface liquid crystal screen test device output in the calibration process. This helps to ensure that the signal output by the test device meets the expected specifications and standards, further improving the accuracy and reliability of the test. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the schematic diagram of test device of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] As Figure 1The utility model provides a kind of xx shown, including power module, the output of power module is electrically connected with MCU module, TFT-LCD drawing acceleration chip module and TFT display and interface module thereof, the MCU module is electrically connected with storage module, the MCU module can be developed test procedure by storage module and realizes the connection and control of TFT-LCD drawing acceleration chip module and TFT display, TFT-LCD drawing acceleration chip module and MCU module are electrically connected each other and receive the image data of MCU module and process, TFT display and TFT-LCD drawing acceleration chip module are electrically connected each other, the TFT display can convert the RGB format data output by TFT-LCD drawing acceleration chip module into MIPI interface standard data stream, the TFT display is electrically connected with interface module, the interface module includes MIPI-DSI interface, RGB interface and debugging interface, the debugging interface can be convenient for engineer to program and online debugging.

[0023] Reference Figure 1 The output of the power module is electrically connected with a filtering module, and the output of the filtering module is electrically connected with the input of the MCU module, the TFT-LCD drawing acceleration chip module, and the TFT display and the interface module thereof. The filtering module can remove high-frequency noise and interference in the power supply, thereby ensuring the purity of the power output.

[0024] As a technical optimization scheme of the utility model, by increasing the filtering module, high-frequency noise and interference in the power supply can be removed, and the purity of the power output is ensured. This helps to reduce errors in the testing process and improve the accuracy of testing.

[0025] Reference Figure 1 The MCU module is installed with a real-time operating system, which can uniformly manage the software resources of the testing device, thereby improving the real-time performance and response speed of the testing process.

[0026] As a technical optimization scheme of the utility model, the real-time operating system installed can uniformly manage the software resources of the testing device, thereby improving the real-time performance and response speed of the testing process. This enables the testing device to process data more quickly and shorten the testing period.

[0027] Reference Figure 1 The real-time operating system is installed with a remote module, which can be remotely connected and controlled through a network to realize remote testing and monitoring functions.

[0028] As a technical optimization scheme of the utility model, the remote module is set, which allows remote connection and control through the network, realizes remote testing and monitoring function.

[0029] Reference Figure 1 The MCU module is installed with an automatic test script, and the MCU module can realize automation of the test process through the automatic test script, thereby improving the test efficiency.

[0030] As a technical optimization scheme of the utility model, the automatic test script installed on the MCU module can automatically execute the test process, thereby improving the test efficiency.

[0031] Reference Figure 1 The storage module is installed with an oscilloscope, and the oscilloscope can monitor the signal waveform output by the MIPI interface liquid crystal screen testing device during the calibration process, thereby ensuring that it meets the expected specifications and standards.

[0032] As a technical optimization scheme of the utility model, the oscilloscope installed in the storage module can monitor the signal waveform output by the MIPI interface liquid crystal screen testing device during the calibration process.

[0033] The working principle and use process of the utility model are: when using, the power module provides stable power supply for the whole testing device. The MCU module receives external control signal and image data, the TFT-LCD drawing acceleration chip module pre-processes and accelerates display of the image data, the RGB to MIPI bridging chip module converts the image data in RGB format into data in MIPI interface format, and the MIPI interface display screen receives the data in MIPI interface format and displays. Specifically, the test program is developed on the MCU N76S003, the control of the LT7680A and the LT8918 is realized, and the generation, processing and transmission logic of the image data are realized by programming, so that various test modes are designed, such as color calibration, brightness uniformity test, response time test, etc. The image data is pre-processed and optimized by using the drawing acceleration function of the LT7680A, the format conversion and resolution adaptation of the image data are realized, the display difference of the liquid crystal screen is compensated through algorithm, and the test accuracy is improved. On the communication protocol and interface driver, the communication protocol and interface driver program between the MCU and the LT7680A and the LT8918 are written, the data transmission and control command interaction on the I2C / SPI bus are realized, and the MIPI interface parameters are configured to ensure the compatibility with different models of display screens.

[0034] In summary: the utility model uses under the synchronous cooperation of overall structure, provides a kind of low cost, easy to make and maintain single-chip microcomputer driven MIPI interface liquid crystal screen testing device, to facilitate the batch aging test of MIPI display screen, avoid the costliness and the limitation of test scheme in traditional test process, so that it has the advantage of being easy to use.

[0035] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the utility model have been shown and described, it is to be understood that the utility model is not limited to the embodiments described, and that various modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A single-chip microcomputer-driven MIPI interface liquid crystal screen testing device comprising a power module, characterized in that, The output end of the power module is electrically connected with an MCU module, a TFT-LCD drawing acceleration chip module and a TFT display and its interface module, the MCU module is electrically connected with a storage module, the MCU module can develop test programs through the storage module and realize the connection and control of the TFT-LCD drawing acceleration chip module and the TFT display, the TFT-LCD drawing acceleration chip module and the MCU module are electrically connected with each other and receive image data of the MCU module for processing, the TFT display and the TFT-LCD drawing acceleration chip module are electrically connected with each other, the TFT display can convert RGB format data output by the TFT-LCD drawing acceleration chip module into a data stream of MIPI interface standard, the TFT display is electrically connected with an interface module, the interface module includes a MIPI-DSI interface, an RGB interface and a debugging interface, the debugging interface can facilitate engineers to program and online debug.

2. The single-chip microcomputer driven MIPI interface liquid crystal screen testing device according to claim 1, characterized in that: The output end of the power module is electrically connected with a filtering module, the output end of the filtering module is electrically connected with the input end of the MCU module, the TFT-LCD drawing acceleration chip module and the TFT display and its interface module, the filtering module can remove high-frequency noise and interference in the power supply, thereby ensuring the purity of the power output.

3. The MIPI interface LCD screen testing device driven by a single-chip microcomputer according to claim 1, characterized in that: The MCU module is installed with a real-time operating system, the real-time operating system can uniformly manage software resources of the test device, thereby improving the real-time performance and response speed of the test process.

4. The single-chip microcomputer driven MIPI interface liquid crystal screen testing device according to claim 3, characterized in that: The real-time operating system is installed with a remote module, the remote module can be remotely connected and controlled through a network to realize remote test and monitoring functions.

5. The single-chip microcomputer driven MIPI interface liquid crystal screen testing device according to claim 1, characterized in that: The MCU module is installed with an automatic test script, the MCU module can realize the automation of the test process through the automatic test script, thereby improving the test efficiency.

6. The single-chip microcomputer driven MIPI interface liquid crystal screen testing device according to claim 1, characterized in that: The storage module is installed with an oscilloscope, the oscilloscope can monitor the signal waveform output by the MIPI interface liquid crystal screen test device during the calibration process, thereby ensuring that it meets the expected specifications and standards.

Images