Realize the mipi module test method and test system in command mode

Abstract

The invention discloses a MIPI module test method and a test system for realizing the COMMAND mode, which are used for the pre-delivery configuration test of the COMMAND mode MIPI module. The main steps of the method include: the PG image generator is set according to the type of the MIPI module Register configuration parameters and image data, and send the register configuration parameters to the MCU, and send the image data to the FPGA through the LVDS data bus interface; the MCU generates DCS instructions according to the register configuration parameters and sends them to the FPGA; the FPGA receives the image data through the LVDS data bus interface Signal, then pack the DCS command and image data and send it to the bridge chip; the bridge chip sends the DCS command to configure the MIPI module, and converts the image data into MIPI signal and then sends it to the MIPI module, and the MIPI module displays the image data according to the MIPI signal ,Finished test.

Description

technical field [0001] The invention belongs to the display field and testing technical field of liquid crystal modules, and specifically refers to a MIPI module testing method and testing system for realizing COMMAND mode. Background technique [0002] Display screens with MIPI interfaces are widely used in modern electronic devices such as smart phones and tablets. In the large-scale production process of MIPI display modules, the configuration test of MIPI modules before leaving the factory is a very important link. It is necessary to use the technology of reading and setting the internal registers of MIPI modules to complete the point screen test and Vcom adjustment. , MTP burning and other production processes. In VIDEO mode or COMMAND mode, the bridge chip sends the input signal to the MIPI module display in VIDEO mode or COMMAND mode through the internal conversion mechanism. VIDEO mode refers to the mode in which the host transmits to the LCD module using real-time...

AI Technical Summary

Problems solved by technology

[0003] At this stage, the MIPI module test system is only applicable to MIPI modules in VIDEO mode. The solution for configuring the bridge chip is to use two independent channels of SPI channel and RGB data channel to transmit parameter configuration data and image data respectively. However, the bridge chip works In COMMAND mode, the SPI interface used to transmit configuration parameters is closed, so the current MIPI module test system cannot perform point-screen testing of MIPI modules in COMMAND mode

Images