Pixel Electrode Structure for Grayscale V-Crosstalk Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-resolution liquid crystal panels face issues with asymmetric pixel voltage pulling, leading to severe grayscale V-crosstalk due to small pixel pitch and storage capacitance, affecting display quality.
Innovation Solution
A pixel electrode design with alternating first and second groups of sub-conductive parts, where the sum of lengths of first connection strips is less than that of second connection strips, and open-ended slits are positioned to reduce lateral capacitance asymmetry, enhancing display uniformity and reducing grayscale V-crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution pixels with small pixel pitch are used, then display resolution is improved, but storage capacitance decreases causing asymmetric pixel voltage pulling and severe grayscale V-crosstalk
Solution Approach 1:
The pixel electrode structure intentionally introduces asymmetric elements (different lengths of first and second connection strips, asymmetric slit positioning) to compensate for the inherent asymmetry in voltage pulling caused by small pixel pitch. This asymmetric design balances the lateral capacitance distribution, thereby reducing grayscale V-crosstalk and improving display uniformity while maintaining high resolution.
2Area of stationary object
If pixel pitch is reduced for high resolution, then more pixels per area are achieved, but lateral capacitance asymmetry increases causing V-crosstalk
Solution Approach 1:
The patent applies local quality by creating non-uniform distribution of conductive materials within the pixel electrode. The first and second connection strips have different lengths and are positioned asymmetrically, creating localized capacitance variations that compensate for the overall lateral capacitance asymmetry caused by small pixel pitch, thereby reducing V-crosstalk while maintaining high pixel density.
3Ease of manufacture
If symmetric pixel electrode structure is used, then manufacturing is simplified, but grayscale V-crosstalk cannot be effectively reduced
Solution Approach 1:
The patent deliberately employs asymmetric design in the pixel electrode structure, where the first connection strip and second connection strip have different lengths and are positioned differently relative to the slits. This asymmetric configuration is specifically designed to counterbalance the asymmetric voltage pulling effect, effectively reducing grayscale V-crosstalk while remaining compatible with standard manufacturing processes.
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 design improves display transmittance and reduces grayscale V-crosstalk by balancing lateral capacitance, ensuring uniform display performance across the pixel electrode.
Implementation Method 1
the sum of lengths of first connection strips in the at least one first group of sub-conductive parts is less than a sum of lengths of the second connection strips in the at least one second group of sub-conductive parts
Data Source
AI summary
A pixel electrode, an array substrate, and a display device are provided. The pixel electrode includes: a first edge conductive part and a second edge conductive part arranged at intervals in a first direction, and a main conductive part at least partially located between the first edge conductive part and the second edge conductive part. The main conductive part is respectively connected to the first edge conductive part and the second edge conductive part. The main conductive part includes at least one first group of sub-conductive parts and at least one second group of sub-conductive parts. The first group of sub-conductive parts and the second group of sub-conductive parts are arranged alternately in the first direction.