Liquid Crystal Display Pixel Electrode Branching
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Solution Overview
Problem
Liquid crystal displays (LCDs) using the vertical alignment (VA) mode suffer from poor side visibility compared to front visibility, requiring additional voltages to address this issue.
Innovation Solution
The implementation of a liquid crystal display with a pixel electrode comprising a plurality of minute branches, where the interval between neighboring branches varies in distance, forming distinct regions to enhance visibility and reduce display deterioration factors like texture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple domains are formed in one pixel to achieve wide viewing angle, then viewing angle is improved, but side visibility deteriorates
Solution Approach 1:
The pixel electrode is segmented into multiple domains with different alignment directions. Each domain is further divided into multiple sub-regions with different slit orientations, creating a multi-domain structure that improves viewing angle while maintaining side visibility through complementary viewing angle effects.
Solution Approach 2:
Different regions within the pixel electrode are assigned different slit patterns and orientations. Specifically, first and second regions have slits extending in different directions, allowing each local region to optimize for specific viewing angles, thereby achieving both wide viewing angle and good side visibility.
2Adaptability or versatility
If minute slits are formed in field generating electrodes to create multiple domains, then domain formation is achieved, but texture deterioration appears
Solution Approach 1:
The pixel electrode is divided into multiple regions with different slit patterns. First and second regions have slits extending in different orientations, which creates diverse local electric field distributions that prevent uniform texture formation while maintaining effective domain separation.
Solution Approach 2:
The slit patterns in different regions are intentionally made asymmetric with respect to each other. The first region has slits oriented in one direction while the second region has slits oriented in a different direction, creating asymmetric electric field distributions that reduce texture effects through cancellation.
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 configuration improves the transmittance and visibility of the liquid crystal display by varying the electric field inclination, thereby enhancing both front and side viewing angles while minimizing texture.
Implementation Method 1
applying voltages to the field-generating electrodes to generate an electric field in the liquid crystal (LC) layer that determines the orientation of LC molecules therein to adjust polarization of incident light
Implementation Method 2
adjust polarization of incident light
Implementation Method 3
improves the transmittance and visibility of the liquid crystal display by varying the electric field inclination
Data Source
AI summary
The present invention relates to a liquid crystal display. A liquid crystal display according to exemplary embodiments of the present invention includes a substrate, and a pixel electrode formed on the substrate and including a plurality of minute branches. The pixel electrode includes a first region and a second region where a first distance and a second distance are provided according to an interval between the respective neighboring minute branches, wherein the second distance that is larger than the first distance, and a third region is provided between the first region and the second region, and the position of the third region having an interval between the neighboring minute branches is gradually changed.