Display Panel Spacer Groove and Conductive Layer Design
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Solution Overview
Problem
The stability of liquid crystal display panels is compromised due to an insufficient step difference between main and sub-spacers, leading to performance instability and display quality issues under varying temperatures.
Innovation Solution
The introduction of a transparent conductive layer on one substrate and a groove in the other, allowing the sub-spacers to be inserted and increasing the step difference between main and sub-spacers, thereby enhancing the stability of the liquid crystal cell and improving display performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the step difference between main spacers and sub-spacers is increased to ensure sufficient liquid crystal margin, then the stability of the liquid crystal cell is improved, but the device complexity increases due to additional structural requirements
Solution Approach 1:
The patent introduces a groove structure on the substrate surface, adding a dimensional feature that accommodates sub-spacers. This groove-based approach increases the step difference between main and sub-spacers without requiring complex multi-layer spacer stacking, thereby improving liquid crystal cell stability while controlling structural complexity.
Solution Approach 2:
The groove acts as an intermediary structure between the main spacers and sub-spacers. It provides a dedicated space for sub-spacers, enabling the formation of sufficient step difference while simplifying the overall spacer configuration and reducing manufacturing complexity.
2Reliability
If the liquid crystal margin is increased to prevent gravity Mura and vacuum bubbles, then the display quality is improved, but the production cost increases due to higher material requirements
Solution Approach 1:
The patent changes the geometric parameters of the spacer configuration by introducing grooves with specific dimensions and depths. This modifies the step difference between main and sub-spacers, thereby optimizing the liquid crystal margin without requiring excessive liquid crystal material, thus improving display quality while controlling material consumption.
3Temperature
If the step difference between main and sub-spacers is increased to maintain liquid crystal cell thickness stability, then the temperature resistance is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent segments the spacer system into main spacers and sub-spacers with distinct functions. The groove structure provides a predefined position for sub-spacers, which simplifies positioning and reduces the precision requirements for manual or automated spacer placement during manufacturing, while still achieving the necessary step difference for temperature resistance.
Data Source
AI summary
A display panel and a display device, including a first substrate and a second substrate arranged opposite each other and spaced apart from each other, and a main spacer and a sub-spacer arranged between the first substrate and the second substrate, with bottom ends of both the main spacer and the sub-spacer arranged at the first substrate. In this display panel, by providing a part of a surface of the second substrate with a transparent conductive layer, the main spacer is able to directly press against the transparent conductive layer. By defining a groove in the second substrate with an opening thereof opposite the sub-spacer, a free end of the sub-spacer can be inserted into the groove when being applied with a supporting force. Thus, a step difference between the two spacers can increase by a thickness of the transparent conductive layer and a depth of the groove.