Array Substrate Electrode Layout for LCD Disclination Control
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Solution Overview
Problem
Existing liquid crystal display technologies face challenges in achieving uniform contrast at different viewing angles due to complex electric field distributions at the edge areas of strip-shaped electrodes, leading to black disclination lines and reduced display quality.
Innovation Solution
The array substrate design includes strip-shaped electrodes with first and second parts extending in different directions, where the second parts are disconnected at the second side, optimizing the electric field distribution by reducing the component Ex and enhancing the components Ez and Ey, thereby controlling liquid crystal molecule rotation uniformly across the electrode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If strip-shaped electrodes with uniform structure are used, then manufacturing is simple, but black disclination lines appear at edge areas and display quality deteriorates
Solution Approach 1:
The strip-shaped electrode is segmented into a first part and a second part with different structural characteristics. The first part has a first width and the second part has a second width that is different from the first width, creating distinct regions within the electrode structure to optimize electric field distribution at different locations.
Solution Approach 2:
Different portions of the electrode are given different local properties through the width variation. The first part and second part have different widths to create optimized local electric field characteristics, preventing black disclination lines at edge areas while maintaining overall electrode functionality.
2Manufacturing precision
If complex electrode structures are used to improve display quality, then black disclination lines are reduced, but device complexity increases
Solution Approach 1:
The electrode is divided into two parts with different widths, creating a structured design that addresses edge area issues without requiring completely complex electrode patterns. This segmentation provides a balanced solution between simplicity and performance.
Solution Approach 2:
The electrode structure introduces asymmetry through the width difference between the first part and second part. This asymmetric design optimizes the electric field distribution at edge areas to prevent black disclination lines while maintaining a relatively simple overall structure.
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 design effectively moves black disclination lines outside the effective display area, improves display quality, and increases gray scale response speed by avoiding the occurrence, movement, and stabilization of disclination lines.
Implementation Method 1
optimizing the electric field distribution by reducing the component Ex and enhancing the components Ez and Ey, thereby controlling liquid crystal molecule rotation uniformly across the electrode
Data Source
AI summary
The present disclosure provides an array substrate, a liquid crystal display panel and a liquid crystal display device, including: a base substrate; gate lines each extending in a first direction on the base substrate; data lines each extending in a second direction intersecting the first direction; pixel units located in regions defined by the gate lines and the data lines; each pixel unit has a first side and a second side each extending in the second direction and opposite to each other in the first direction; each pixel unit includes a first electrode including a plurality of strip-shaped 10 electrodes, at least part of the strip-shaped electrodes each have a first part and a second part extending in different directions, first parts are connected at the first side, second parts are disconnected at the second side, and lengths of the first part and the second part are different.