Liquid Crystal Panel Switch Controller for 3D Flicker Reduction
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Solution Overview
Problem
Flicker issues occur in 3D displaying mode of liquid crystal displays due to frame rotation failure, leading to increased manufacturing costs when the number of gate driving chips is doubled to address these issues.
Innovation Solution
An array substrate design with a switch controller that manages first and second scanning lines to enable charging and voltage sharing in 2D mode, and only charging in 3D mode, utilizing thin-film transistors and a sharing capacitor to reduce the need for additional gate driving chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of gate driving chips is doubled to independently control pixel charging and pixel sharing functions, then the flicker issues in 3D displaying mode are improved, but the manufacturing cost increases
Solution Approach 1:
The gate driving chip is designed to perform multiple functions: it can control both pixel charging and pixel sharing operations using the same chip, rather than requiring separate dedicated chips for each function. The chip responds to different control signals to switch between charging mode and sharing mode, making it a universal controller that handles both operations sequentially
Solution Approach 2:
The gate driving chip dynamically switches between different operating modes based on the display requirements. In 2D mode, it alternates between charging scanning lines and sharing scanning lines. In 3D mode, it adapts its control strategy to prevent flicker while maintaining cost-effectiveness, changing its behavior based on the operational context rather than being fixed for a single function
2Reliability
If independent control of pixel charging and pixel sharing functions is implemented, then the flicker issues are enhanced, but the device complexity increases due to doubled gate driving chips
Solution Approach 1:
A single gate driving chip is designed to universally handle both pixel charging and pixel sharing functions by responding to different control signals. The chip contains internal logic that distinguishes between charging operations and sharing operations, allowing one chip to replace what would traditionally require two separate chips
Solution Approach 2:
The functions of controlling pixel charging and pixel sharing are merged into a single gate driving chip rather than being separated into independent chips. The chip integrates the control logic for both functions and manages them through a unified control architecture, reducing the overall component count and system complexity
Data Source
AI summary
A liquid crystal panel and the array substrate thereof are disclosed. The array substrate includes a switch controller respectively connects with the first scanning line and the second scanning line. In the 2D displaying mode, the switch controller turns on the first scanning line and the second scanning line in turn. In the 3D displaying mode, the switch controller turns on the first scanning line, and turns off the second scanning line. With such configuration, the flicker issues in the 3D displaying mode may be improved and the manufacturing cost is prevented from getting higher.