OLED Display Interface Data Compression and Encryption
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Solution Overview
Problem
OLED display devices face non-uniform luminance due to deviations in driving characteristics of drive TFTs, requiring external compensation and encrypted data transmission to maintain a slim profile and protect content during communication between the display module and externally separated circuit configurations.
Innovation Solution
An OLED display device with an interface device that compresses display data during active periods and transmits it via a cable, while keeping sensing and recovery data non-compressed, using an encrypted transmission system to ensure efficient data transmission and prevent data loss, allowing for external separation of the control module and a slim display module design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If display data is compressed during active periods to reduce transmission data量, then transmission efficiency is improved, but sensing data and recovery data may be lost if compressed
Solution Approach 1:
The patent applies different data processing methods to different types of data: display data is compressed to improve transmission efficiency, while sensing data and recovery data are transmitted without compression to ensure data integrity. This local differentiation of processing quality resolves the contradiction between transmission efficiency and data reliability.
2Length of moving object
If the control module is externally separated from the display module, then the display module thickness is reduced, but encrypted transmission is required to protect content
Solution Approach 1:
The patent segments the display system into a thin display module and an externally separated control module. This segmentation allows the display module to achieve reduced thickness while the control module handles the encrypted transmission functions, resolving the contradiction between thickness reduction and transmission security requirements.
3Reliability
If sensing data is transmitted without compression to prevent data loss, then data integrity is maintained, but transmission bandwidth is increased
Solution Approach 1:
The patent applies different transmission quality levels to different data types: sensing data and recovery data are transmitted without compression to maintain data integrity, while display data is compressed. This selective approach maintains reliability for critical data while managing overall bandwidth consumption.
Data Source
AI summary
An organic light emitting diode display device includes a display module having a display panel and a panel driver; a host system separated from the display module with a timing controller to control the panel driver; and an interface device between the host system and the display module. The interface device includes a cable between the host system and the display module, a transmission module to compress display data from the timing controller in an active period of each frame without compressing sensing data and recovery data supplied in a blank period of the frame and to transmit the compressed display data, the non-compressed sensing data and recovery data via the cable, and a reception module to decompress the compressed data transmitted via the cable, to supply the decompressed data to the panel driver, and to supply the non-compressed data to the panel driver without data processing.