Dual Driving Channel Display Device for Safety Redundancy
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Solution Overview
Problem
Display devices in critical applications like aircrafts face safety risks due to incomplete information display when partial components fail, and existing safety functions often degrade the resolution of important information.
Innovation Solution
A display device with dual driving channels and channel switching elements allows continuous operation even if one driving channel fails, maintaining resolution by selectively switching between channels for power and signal supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single display panel is used with redundant RGB components, then safety function is improved, but device complexity increases
Solution Approach 1:
The display device is divided into two independent driving channels (first and second driving channels), each capable of independently driving the display panel. This segmentation allows one channel to take over if the other fails, providing redundancy without requiring multiple physical panels, thus improving safety while maintaining a single-panel structure.
Solution Approach 2:
Each driving channel is designed to be universal and capable of independently driving the entire display panel. The first and second data driving units and gate driving units can each independently perform the function of driving all pixels on the panel, making the system more reliable without significantly increasing complexity.
2Reliability
If multiple pairs of RGB components are provided in each pixel region, then safety function is improved, but manufacturing precision requirements increase
Solution Approach 1:
Instead of adding redundant RGB components within each pixel region, the patent segments the driving system into two independent channels. Each channel has its own data and gate driving units that can independently control the display panel, providing safety redundancy without complicating the pixel structure or increasing manufacturing precision requirements.
3Reliability
If only a portion of display screen is used when defects occur, then reliability is maintained, but productivity decreases
Solution Approach 1:
The system performs preliminary action by having both driving channels operational and ready before any defect occurs. When a defect is detected in one channel, the system can immediately switch to the other channel, ensuring full display area remains utilized without interruption, thus maintaining both reliability and productivity.
Solution Approach 2:
The system changes the operational parameter from single-channel to dual-channel configuration. By having two independent driving channels, the system can switch between them based on defect detection, ensuring that the full display area remains productive while maintaining reliability through redundancy.
Data Source
AI summary
A display device having safety functions may include: a display panel having unit pixel regions formed by intersecting a plurality of data lines with a plurality of gate lines; a first driving channel including a first data driving unit connected to one sides of the data lines and a first gate driving unit connected to one sides of the gate lines; and a second driving channel including a second data driving unit connected to the other sides of the data lines and a second gate driving unit connected to the other sides of the gate lines; wherein the display panel is driven by one of the first driving channel and the second driving channel.