Transflective Liquid Crystal Panel Sub-Pixel Driving
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Solution Overview
Problem
Conventional transflective liquid crystal panels have a complex driving scheme due to mismatched voltage-brightness curves between transmissive and reflective sub-pixels, leading to poor display quality, flickering, and high power consumption.
Innovation Solution
A new layout where transmissive and reflective sub-pixels are connected to different gate and data lines, allowing for separate voltage supply based on their respective gamma curves, reducing driving complexity and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the driving IC supplies voltage to transmissive and reflective sub-pixels according to the same gamma curve, then the driving scheme is simple, but the voltage-brightness curves do not match causing poor display quality and flickering
Solution Approach 1:
The patent segments the sub-pixel array into transmissive sub-pixels and reflective sub-pixels with separate data lines, allowing independent voltage control for each type. This segmentation enables separate gamma curve application to each sub-pixel type, resolving the voltage-brightness curve mismatch while maintaining manageable driving complexity through structured separation.
Solution Approach 2:
The patent applies local quality by providing different data lines specifically for transmissive sub-pixels and reflective sub-pixels. Each sub-pixel type receives optimized voltage signals according to its specific gamma curve requirements, ensuring locally optimized display quality while the overall system maintains coherence through the structured dual-line approach.
2Manufacturing precision
If the driving IC supplies voltage according to respective gamma curves for transmissive and reflective sub-pixels, then display quality improves, but data processing becomes complicated and power consumption increases
Solution Approach 1:
By segmenting the data lines into separate sets for transmissive and reflective sub-pixels, the patent enables parallel processing of voltage signals for both sub-pixel types. This segmentation allows the driving IC to efficiently manage separate gamma curves without excessive computational overhead, as each data line can be processed independently rather than requiring complex switching and conversion operations.
3Device complexity
If transmissive and reflective sub-pixels are driven in sequence with shared data lines, then device complexity is reduced, but voltage switching between gamma curves causes high power consumption and processing complexity
Solution Approach 1:
The patent segments data lines into dedicated sets for transmissive and reflective sub-pixels, eliminating the need for time-division multiplexing. This allows simultaneous voltage supply to both sub-pixel types without sequential switching, reducing processing time and power consumption while maintaining relatively simple device architecture through the segmented line configuration.
Data Source
AI summary
A transflective type liquid crystal panel includes a plurality of sub-pixels arranged in rows and columns to form a sub-pixel array, a plurality of first wires extending along the row direction or the column direction, and a plurality of second wires which are parallel with the first wires. The plurality of sub-pixels includes transmissive sub-pixels and reflective sub-pixels. Each row and column in the sub-pixel array has both transmissive sub-pixels and reflective sub-pixels. The transmissive sub-pixels are connected to and driven by the first wires, and the reflective sub-pixels are connected to and driven by the second wires.