Array Substrate Buffer Structure for Liquid Crystal Pretilt Conflict
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Solution Overview
Problem
Liquid crystal display panels on curved surfaces suffer from symmetrical elliptical dark clusters due to pretilt angle conflicts between adjacent alignment areas, which are challenging to address with existing technologies.
Innovation Solution
An array substrate design featuring a pixel electrode with buffer areas and protruding parts, including branch electrodes and auxiliary electrodes, to reduce pretilt angle conflicts and prevent mutual obstruction of liquid crystal molecules, thereby improving display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the pretilt angle of the upper substrate is made small and the topographic structure is simplified, then the dark cluster is improved, but it is difficult to achieve an extremely small pretilt angle and the lower substrate topography becomes a key factor
Solution Approach 1:
The pixel electrode is divided into multiple areas (first area, second area, buffer area) with different electrode arrangements. The first area has first branch electrodes, the second area has second branch electrodes, and the buffer area contains a buffer structure, creating segmented functional zones that address pretilt angle conflicts locally
Solution Approach 2:
Different regions of the pixel electrode are designed with different structures and properties. The buffer area has a specific buffer structure with different characteristics from the first and second areas, allowing each region to optimize for its specific function in managing liquid crystal alignment
2Illumination intensity
If the pretilt angle conflicts at the junction of adjacent alignment areas are reduced, then the dark cluster is improved, but the device complexity increases due to the buffer structure
Solution Approach 1:
The buffer structure in the buffer area acts as an intermediary element between the first area and the second area. This intermediate structure mediates the transition between different alignment areas, buffering the pretilt angle conflicts that occur at their junction
Solution Approach 2:
The pixel electrode structure is extended into a third dimension with the buffer structure having a protrusion height between 0.05 micrometers and 1 micrometer. This vertical dimension provides an additional degree of freedom for controlling liquid crystal alignment and reducing pretilt angle conflicts
Data Source
AI summary
Disclosed are an array substrate and a liquid crystal display panel. The liquid crystal display panel provided by the embodiment of the present application comprises an array substrate. The array substrate eliminates the main electrode of the buffer area, or eliminates the main electrode of the buffer area and then sets a protruding part and adds DBS electrodes on the array substrate. The pretilt angle conflict between two adjacent areas is reduced, thereby preventing the problem of mutual obstruction when the liquid crystal molecules twist, thereby improving dark clusters and solving the problem of uneven display.