Liquid Crystal Display Panel Pixel Electrode Asymmetry
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Solution Overview
Problem
Conventional 8K liquid crystal display panels suffer from narrow viewing angles due to the 4-domain pixel electrode design, which affects image quality.
Innovation Solution
The array substrate and liquid crystal display panel design features pixel electrodes with trunk and branch portions, where the branch electrodes form acute angles with the trunk portions, and the included angles between branch electrodes and trunk portions are not equal, allowing for brightness complementation at different viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a 4-domain pixel electrode design is adopted to improve transmittance, then transmittance is improved, but viewing angle becomes narrow
Solution Approach 1:
The patent applies local quality by making the branch electrodes have different included angles with the trunk portions in different display domains. Specifically, the included angles are designed to be different in the first and second display domains compared to the third and fourth display domains, creating localized optical property variations that compensate for viewing angle dependence and achieve brightness evenness across different viewing directions
Solution Approach 2:
The patent employs asymmetry by deliberately designing the branch electrodes to form different included angles with the trunk portions in different domains. This asymmetric angular distribution breaks the conventional symmetric 4-domain structure, allowing the liquid crystal molecules to be controlled at different tilt angles in different domains, thereby expanding the effective viewing angle range and achieving brightness complementation
2Ease of manufacture
If conventional 4-domain pixel electrodes are used, then manufacturing is simple, but image quality deteriorates due to narrow viewing angles
Solution Approach 1:
The patent changes the geometric parameters of the branch electrodes by designing different included angles with the trunk portions in different domains. This parameter variation allows the liquid crystal display to achieve brightness complementation across viewing domains, improving image quality and viewing angle performance while maintaining the basic 4-domain structure for manufacturing simplicity
Data Source
AI summary
An array substrate and a liquid crystal display panel are provided. The array substrate includes at least one first pixel. In the first pixel electrodes to which the first pixels correspond, an included angle formed between at least one branch electrode and a first trunk portion is not equal to included angles formed between the other branch electrodes and the first trunk portion. The array substrate of the present disclosure alleviates the problem of narrow viewing angles of the liquid crystal display panel by brightness complementation of the pixel electrodes at different viewing angles.