FFS Pixel Electrode Layout for Contrast and Response Time
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing FFS-type display panels face a trade-off between contrast and response time, with smaller tilt angles improving contrast but increasing response time, and larger tilt angles reducing contrast but improving response time.
Innovation Solution
The display panel design includes pixel electrodes with branch electrodes and data lines forming acute angles greater than 0° and less than 7°, along with light shielding layers to reduce light leakage and improve contrast while maintaining short response times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the tilt angle of the pixel electrode is increased, then the response time is reduced, but the contrast deteriorates
Solution Approach 1:
The pixel electrode is divided into multiple independent electrode segments (first electrode segment, second electrode segment, third electrode segment, fourth electrode segment) with different tilt angles. This segmentation allows each segment to contribute differently to the electric field distribution, enabling simultaneous optimization of response time and contrast that cannot be achieved with a uniform electrode design.
Solution Approach 2:
Different regions of the pixel electrode are assigned different tilt angles (0° to 10° for first and second segments, 0° to 5° for third and fourth segments). This local quality variation creates non-uniform electric field distribution that improves both response time in certain regions and contrast in others, resolving the trade-off between these two parameters.
2Manufacturing precision
If the tilt angle of the pixel electrode is decreased, then the contrast is improved, but the response time increases
Solution Approach 1:
The pixel electrode is divided into multiple independent electrode segments (first electrode segment, second electrode segment, third electrode segment, fourth electrode segment) with different tilt angles. This segmentation allows each segment to contribute differently to the electric field distribution, enabling simultaneous optimization of response time and contrast that cannot be achieved with a uniform electrode design.
Solution Approach 2:
Different regions of the pixel electrode are assigned different tilt angles (0° to 10° for first and second segments, 0° to 5° for third and fourth segments). This local quality variation creates non-uniform electric field distribution that improves both response time in certain regions and contrast in others, resolving the trade-off between these two parameters.
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
The proposed design enhances contrast by up to 3.0% and improves brightness uniformity, while maintaining a short response time and reducing light leakage areas.
Implementation Method 1
fringe field switching (FFS) is an in-plane switching type display mode, which generates an edge electric field by using a top-layer pixel electrode and a bottom-layer common electrode on an array substrate, so that each liquid crystal molecule between the electrodes and each liquid crystal molecule directly above the electrodes may rotate on a plane parallel to the substrate
Implementation Method 2
each liquid crystal molecule between the electrodes and each liquid crystal molecule directly above the electrodes may rotate on a plane parallel to the substrate
Implementation Method 3
a plurality of data lines and a plurality of scan lines, where the plurality of data lines and the plurality of scan lines enclose a plurality of pixel units, and the pixel units each comprises a pixel electrode
Data Source
AI summary
A display panel includes a plurality of data lines and a plurality of scan lines, the plurality of data lines and the plurality of scan lines enclose a plurality of pixel units, the pixel units each includes a pixel electrode, and an included acute angle between a branch electrode of a pixel electrode and an adjacent data line is greater than 0° and less than or equal to 7°.