Display Substrate Groove Structure for Moisture and Oxygen Control
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Solution Overview
Problem
Existing display products face high reliability evaluation and testing risks due to the organic film layer's vulnerability to water vapor and oxygen transmission, particularly in high temperature, high pressure, and high humidity environments, and the connection between the organic film layer and other film layers is not tight enough.
Innovation Solution
The display substrate incorporates an organic film layer with annular and arc-shaped grooves in the frame sealant arrangement area, which are covered by a sealant, enhancing the separation and contact interface between inorganic layers, reducing water vapor and oxygen intrusion, and improving the reliability of the display substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an organic film layer is used in the manufacturing process to meet increasing resolution and refresh frequency requirements, then the display product performance is improved, but the reliability risk increases due to water vapor and oxygen transmission through the organic film layer
Solution Approach 1:
The organic film layer is divided into multiple segments by introducing annular grooves and arc-shaped grooves that cut through the layer. This segmentation creates isolated sections that reduce continuous transmission paths for water vapor and oxygen, thereby maintaining display performance while improving reliability in high temperature, high pressure, and high humidity environments.
2Ease of manufacture
If the organic film layer is designed with simple structure, then the manufacturing process is easier, but the connection tightness between the organic film layer and other film layers is insufficient
Solution Approach 1:
Arc-shaped grooves with curved geometries are introduced into the organic film layer to enhance the connection interface with adjacent film layers. The curved structure increases surface area and improves adhesion compared to straight linear grooves, achieving tighter bonding while maintaining manufacturing feasibility through standard photolithography and etching processes.
Data Source
AI summary
The present disclosure provides a display substrate and a display device. The display substrate comprises: a display area and a frame area located at the periphery of the display area, wherein the frame area comprises a frame sealant arrangement area, and the frame sealant arrangement area comprises a corner area; the display substrate further comprising: an organic film layer, wherein the organic film layer comprises an annular groove and at least one arc-shaped groove, the annular groove surrounds the display area, and the annular groove is located in the frame sealant arrangement area; the arc-shaped groove is located in the corner area.