Active Matrix Display Gate Signal Line Synchronization
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Solution Overview
Problem
Current liquid crystal display (LCD) panels face issues with image ghosting due to insufficient driving frame rates, leading to short charging times for pixels, which are exacerbated by the complexity of circuit layout design and signal interference when neighboring gate signal lines are electrically connected.
Innovation Solution
The active matrix display device independently drives gate signal lines, allowing non-adjacent pixel rows to be synchronously or sequentially enabled, with overlapping time periods to extend charging time without signal interference, thereby simplifying circuit layout and reducing pixel charging time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If each two neighboring gate signal lines are electrically connected to each other to double the charging time, then the pixel charging time is extended, but the circuit layout design becomes too complex and signals may mutually influence and interfere with each other
Solution Approach 1:
The gate signal lines are divided into multiple independently driven groups rather than connecting neighboring lines. Specifically, gate signal lines G0 and G2 are enabled simultaneously while G1 and G3 are enabled simultaneously, creating separate driving segments that avoid the complexity of direct neighboring connections while still achieving parallel charging of multiple pixel rows
Solution Approach 2:
The patent introduces an intermediate driving strategy where non-adjacent gate signal lines are synchronized through a common control mechanism. By enabling G0 and G2 together and G1 and G3 together through independent driving circuits, the system achieves parallel charging without the harmful direct electrical connection between neighboring lines
2Duration of action of moving object
If each two neighboring gate signal lines are electrically connected to each other to double the charging time, then the pixel charging time is extended, but signal interference occurs between connected lines
Solution Approach 1:
The harmful electrical connection between neighboring gate signal lines is extracted and removed from the design. Instead of connecting G0-G1 and G2-G3, the patent enables G0 and G2 simultaneously while enabling G1 and G3 simultaneously through independent driving, thereby extracting the problematic direct connection while maintaining the beneficial parallel charging effect
Solution Approach 2:
Instead of the conventional approach of connecting adjacent lines (G0-G1, G2-G3), the patent inverts the strategy by connecting and enabling non-adjacent lines (G0-G2, G1-G3). This inversion eliminates signal interference between neighboring lines while still achieving simultaneous charging of multiple pixel rows
Data Source
AI summary
An exemplary active matrix display device includes a plurality of gate signal lines, a plurality of data signal lines and a plurality of pixel rows. The gate signal lines are independently driven from one another. Each of the pixel rows is electrically coupled to one of the gate signal lines and a part of the data signals lines. The pixel rows include a first pixel row and a second pixel row. The first pixel row and the second pixel row are not neighboring with each other. The gate signal line electrically coupled with the first pixel row and the gate signal line electrically coupled with the second pixel row are synchronously enabled.