Segmented Common Electrode Layout for LCD Viewing Angle and Response Time
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Solution Overview
Problem
Conventional liquid crystal display panels face a trade-off between widening the viewing angle and shortening the response time, often at the expense of liquid crystal efficiency.
Innovation Solution
The display panel design includes a substrate with first and second signal lines forming pixel areas, where sub-pixel electrodes are coupled to a common electrode layer with stems and branches that extend orthogonally, allowing for efficient liquid crystal operation by optimizing the layout to improve viewing angle and response time without sacrificing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional liquid crystal display architecture is used to widen viewing angle and shorten response time, then viewing angle and response time are improved, but liquid crystal efficiency is sacrificed
Solution Approach 1:
The common electrode layer is segmented into multiple independent common electrodes arranged in an interlaced pattern, where each common electrode corresponds to specific sub-pixel electrodes. This segmentation allows for optimized electric field distribution that improves viewing angle and response time without compromising liquid crystal efficiency.
Solution Approach 2:
The common electrodes are arranged in an asymmetric interlaced pattern with stems and branches that create non-uniform spacing. This asymmetric arrangement optimizes the electric field distribution across different viewing zones, enabling wide viewing angle performance while maintaining efficient liquid crystal response.
2Speed
If conventional liquid crystal display architecture is used to widen viewing angle and shorten response time, then response time is improved, but liquid crystal efficiency is sacrificed
Solution Approach 1:
The common electrode layer is divided into multiple segmented common electrodes that can be independently controlled. This segmentation enables optimized voltage distribution and electric field formation, which accelerates liquid crystal response time while maintaining efficient molecular alignment and avoiding energy loss.
Solution Approach 2:
The segmented common electrodes enable dynamic control of electric field distribution across different regions of the display. By independently adjusting voltages on different common electrodes, the system can optimize response time for different viewing conditions while maintaining liquid crystal efficiency through adaptive field management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances the viewing angle and response time of liquid crystal display panels while maintaining liquid crystal efficiency, addressing the traditional trade-offs in conventional architectures.
Implementation Method 1
The first common electrode layer includes a plurality of first common electrodes electrically connected to each other. Each first common electrode includes a stem and a plurality of branches.
Data Source
AI summary
A display panel includes a substrate, a plurality of first signal lines, a plurality of second signal lines, a plurality of sub-pixel electrodes, and a first common electrode layer. The plurality of first signal lines and the plurality of second signal lines define a plurality of pixel areas together. Each of the plurality of sub-pixel electrodes is disposed in one of the plurality of pixel areas. The first common electrode layer includes a plurality of first common electrodes electrically connected to each other. Each first common electrode includes a stem and a plurality of branches, and the plurality of branches is coupled to two sides of the stem and extends away from the stem. An orthogonal projection of each stem onto the substrate is located between two adjacent sub-pixel electrodes. Orthogonal projections of the branches onto the substrate at least correspond to one sub-pixel electrode.