Intra-Interface Signal Sharing for Display Driver Circuit Simplification
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Solution Overview
Problem
The complexity of signal transmission paths and increased installation areas in display devices due to separate transmission paths for source and gate drivers, leading to a high number of output pins and connection components.
Innovation Solution
A display device that uses an intra-interface signal to transmit both source driving bit information and gate driving bit information, simplifying the signal transmission path between the timing controller and the panel driver by sharing the same intra-interface wiring for both types of information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate transmission paths are used for source driver and gate driver, then signal transmission reliability is improved, but device complexity and installation area increase
Solution Approach 1:
The patent combines the transmission paths for source driver and gate driver into a single shared intra-interface bus. Multiple data signals (source data and gate control data) are multiplexed onto the same physical transmission medium, reducing the number of separate cables, connectors, and PCB traces required, thereby simplifying the overall circuit architecture while maintaining reliable signal transmission through proper timing and protocol management
2Reliability
If separate transmission paths are used for source driver and gate driver, then signal interference is reduced, but area of connection components increases
Solution Approach 1:
The patent merges multiple data transmission functions into a single intra-interface bus, significantly reducing the total area occupied by connection components such as cables, connectors, and PCB routing. The shared bus architecture consolidates what would otherwise require separate physical pathways, shrinking the footprint of the connection infrastructure while implementing interference mitigation through differential signaling and controlled impedance design
Solution Approach 2:
The intra-interface bus is designed as a universal transmission medium that carries multiple types of data signals (source driver data and gate driver control signals) through the same physical channel. This multi-functional approach eliminates the need for dedicated separate pathways for each signal type, reducing overall connection component area while maintaining signal integrity through protocol-based multiplexing and timing control
Data Source
AI summary
A display device includes a display panel including pixels, and data lines and gate lines connected to the pixels, a timing controller configured to output source driving bit information and gate driving bit information through an intra-interface signal, a source driver configured to generate data driving signal based on the source driving bit information and to supply the data driving signal to the data lines, and a gate driver configured to generate a gate driving signal based on the gate driving bit information and to supply the gate driving signal to the gate lines, wherein the intra-interface signal is configured with predetermined data transmission units and includes both the source driving bit information and the gate driving bit information every 1 data transmission unit.