Array Substrate Spacer Confinement via Segmented Connection Parts
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Solution Overview
Problem
In liquid crystal display (LCD) panels, spacers can move due to external forces, damaging the alignment film and causing light leakage, which affects the display effect.
Innovation Solution
The array substrate design includes a spacer positioned above a second signal line and between a connecting part and a thin film transistor, with the connecting part configured to enclose the spacer from three sides and the TFT from one side, creating a position limiting structure that prevents spacer movement into pixel regions, thus avoiding damage to the alignment film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If spacers are provided as supports to ensure uniformity of the liquid crystal molecule layer thickness, then the thickness uniformity is improved, but the spacers may move into the pixel region under external force, causing light leakage
Solution Approach 1:
The connection part is divided into multiple segments (first connection part, second connection part, third connection part) that collectively enclose the spacer from three sides. This segmentation allows the structure to provide effective confinement while maintaining electrical connection functionality, preventing spacer movement into the pixel region while preserving the liquid crystal layer thickness uniformity.
Solution Approach 2:
The connection part serves as an intermediary structure between the common electrodes, simultaneously providing mechanical support to confine the spacer and electrical connection between adjacent common electrodes. This dual-function design prevents spacer displacement while maintaining the necessary electrical functionality, resolving the contradiction between structural support and display quality.
2Reliability
If the connecting part is designed to enclose the spacer from three sides, then the spacer movement is prevented, but the device complexity increases
Solution Approach 1:
The connection part is designed to perform multiple functions simultaneously: it connects adjacent common electrodes electrically, provides mechanical confinement to the spacer from three sides, and maintains the structural integrity of the array substrate. By integrating these functions into a single structure, the design achieves effective spacer stabilization without proportionally increasing device complexity.
Solution Approach 2:
The connection part merges the electrical connection function with the mechanical support function. Instead of having separate structures for connecting common electrodes and for supporting spacers, the design combines these functions into an integrated connection part that performs both roles, thereby reducing overall structural complexity while maintaining spacer position stability.
Data Source
AI summary
An array substrate, a method of manufacturing the same and a liquid crystal display panel are disclosed. In the array substrate, a connection part for connecting two adjacent pixel electrodes is configured to enclose the spacer from three sides and a corresponding thin film transistor is arranged to enclose the spacer from a side other than the three sides. A distance between an upper surface of the connection part and an upper surface of the base substrate is larger than a distance between a lower surface of the spacer and the upper surface of the base substrate. With this configuration, the spacer is limited within a position limiting structure formed by the connection part and the thin film transistor.