LCD Pixel Electrode Design for Disclination Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pixel electrodes in LCD panels face challenges with increasing pixel density, leading to processing difficulties and disclination phenomena due to the complexity of comb-shaped electrodes, which hinder high resolution and narrow bezel design.
Innovation Solution
A pixel electrode design featuring a main rod portion with strategically placed first and second branch portions, optimizing acute angles and branch configurations to stabilize liquid crystal molecule orientation and reduce disclination, while allowing for a simpler structure that replaces multiple sawteeth with fewer, more effective components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sawtooth-like comb-shaped electrodes are used in each pixel electrode, then liquid crystal molecule orientation is improved, but processing difficulty increases and device complexity increases
Solution Approach 1:
The patent extracts and eliminates the unnecessary sawtooth-like structures from the pixel electrode, retaining only the essential main rod portion with optimized branch portions. This simplification reduces processing complexity while maintaining sufficient liquid crystal molecule orientation control through the streamlined structure.
Solution Approach 2:
The patent optimizes geometric parameters of the pixel electrode, specifically the acute angles between the main rod portion and branch portions. By carefully selecting angle values within specific ranges, the patent achieves stable liquid crystal molecule orientation with a simpler, less complex electrode structure.
2Reliability
If multiple sawtooth-like comb-shaped electrodes are used in each pixel electrode, then liquid crystal molecule orientation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent removes the complex sawtooth-like features that require high manufacturing precision, retaining only the basic main rod and branch portion structure. This extraction of unnecessary complex elements significantly reduces the precision requirements during fabrication while maintaining effective liquid crystal control.
Solution Approach 2:
The patent establishes specific parameter ranges for the acute angles between main rod and branch portions, providing clear design guidelines that ease manufacturing precision requirements. By defining acceptable parameter ranges rather than requiring exact values, the patent facilitates more tolerant manufacturing processes.
3Measurement precision
If more pixels are disposed within a unit area, then resolution ratio is improved, but space for each pixel electrode is reduced
Solution Approach 1:
The patent extracts unnecessary structural elements (multiple sawtooth-like electrodes) from each pixel electrode, retaining only the essential main rod portion. This reduction in electrode area per pixel enables higher pixel density within the same display unit area, achieving improved resolution ratio.
Solution Approach 2:
The patent optimizes the geometric parameters of the pixel electrode structure, creating a more compact configuration with appropriate acute angles. This parameter optimization reduces the overall area occupied by each pixel electrode, allowing more pixels to be packed into the same display area.
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 effectively minimizes disclination regions, enhances image stability, and supports high resolution and narrow bezel designs by stabilizing liquid crystal molecule orientation and reducing processing complexity.
Implementation Method 1
The electrical field generated at the first inclined portion 11 is illustrated by dashed line 111 in FIG. 1, and the liquid crystal molecules herein rotates anti-clockwise due to the effect of the electrical field in the direction of the dashed line 111
Data Source
AI summary
A pixel electrode is provided. The pixel electrode includes a main rod portion disposed in a first direction, a first branch portion connected with the main rod portion and extending along a second direction away from one side of the main rod portion, and a second branch portion connected with the main rod portion and extending along a third direction away from another side of the main rod portion. The first branch portion and the second branch portion does not overlap with a display region of the LCD panel, and the second branch portion is disposed at the vicinity of a via hole of the pixel electrode.