Driver IC Data Burning via MIPI Differential Interface
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Solution Overview
Problem
Existing data burning methods for display modules, such as AMOLED modules, face challenges in data transmission stability and speed due to direct SPI signal transmission, which can lead to errors and interruptions during the burning process.
Innovation Solution
A data burning method and device that utilizes a differential signal interface, specifically MIPI, to receive and parse grayscale data packets, and then packages them into SPI data packets for transmission to the memory through SPI transmission lines, improving stability and speed by reducing transmission errors and allowing flexible burning based on instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct SPI signal transmission is used to burn data from signal generator to memory, then device complexity is reduced, but data transmission stability and speed deteriorate due to errors and interruptions
Solution Approach 1:
The driver IC serves as an intermediary component between the signal generator and memory. It receives differential signal data packets from the signal generator through a differential signal interface, parses them to extract grayscale data, packages the data into SPI format, and transmits it to the memory through SPI transmission lines. This intermediary approach isolates the memory from direct SPI connection requirements while maintaining data transmission stability through the driver IC's buffering and protocol conversion capabilities.
2Speed
If direct SPI transmission is used for data burning, then interface requirements are simplified, but transmission speed and error rate worsen
Solution Approach 1:
The data transmission process is segmented into distinct stages: (1) The signal generator transmits data as differential signal data packets through the differential signal interface to the driver IC; (2) The driver IC parses these packets to extract grayscale data and stores it in its internal register; (3) Upon receiving a burning instruction, the driver IC packages the stored grayscale data into SPI data packets and transmits them to the memory through SPI transmission lines. This segmentation allows each component to operate at its optimal speed and reduces transmission errors by separating the high-speed differential signal reception from the SPI transmission phase.
3Reliability
If grayscale data is received and burned directly through SPI, then processing steps are minimized, but data stability and burning reliability deteriorate
Solution Approach 1:
The driver IC performs preliminary actions by receiving and storing grayscale data in its internal register before the actual burning process is initiated. When the signal generator sends a differential signal data packet containing grayscale data, the driver IC parses and stores this data in advance. Subsequently, when a burning instruction is received, the driver IC can immediately package the pre-stored data into SPI format and transmit it to the memory without requiring real-time data generation during the burning phase, thereby improving burning reliability and reducing transmission errors.
Data Source
AI summary
The preset disclosure provides a data burning method and a data burning device. The data burning method comprises receiving a differential signal data packet, which is transmitted by a signal generator, by a driver IC through a differential signal interface, the differential signal data packet including grayscale data; parsing the differential signal data packet by the driver IC to obtain the grayscale data; and burning the grayscale data to a memory by the driver IC.