Array Substrate Recess Structure for Bending Signal Line Protection
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Solution Overview
Problem
Frameless electronic display products face yield and cost issues due to signal line breakage during bending, as existing designs lack effective protection for signal lines in bending regions.
Innovation Solution
An array substrate with a base substrate and insulating layer featuring recesses with concave-convex structures, where signal lines are partly disposed within these recesses, increasing the surface area and bending resistance to prevent breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the non-display portion is designed to bend towards the backside of the display screen, then the frameless appearance requirement is met, but signal lines may break during the bending process
Solution Approach 1:
The patent introduces a recess structure that extends vertically into the insulating layer, transforming a two-dimensional surface problem into a three-dimensional solution. The signal line is positioned within this vertical recess space, allowing the bending to occur in the horizontal plane while the signal line remains protected in the vertical dimension, thus preventing breakage while maintaining the frameless appearance.
Solution Approach 2:
The signal line is nested within the recess structure formed in the insulating layer. The recess acts as a protective container that houses the signal line, similar to nested dolls. This nesting arrangement ensures the signal line is surrounded and protected by the insulating material during the bending process, preventing mechanical damage while allowing the overall structure to achieve the desired frameless shape.
2Shape
If signal lines are placed in the bending region to achieve frameless design, then product appearance is improved, but manufacturing complexity increases due to additional protective structures
Solution Approach 1:
The patent applies the recess structure locally only in the bending region where signal lines are present, rather than throughout the entire insulating layer. This localized approach provides the necessary protection and dimensional accommodation exactly where needed, while leaving the rest of the structure simple and easy to manufacture, thus balancing the frameless design requirement with manufacturing feasibility.
Data Source
AI summary
An array substrate and a manufacturing method thereof, a display panel, and a display device are disclosed. The array substrate includes a base substrate including a bending region; and an insulating layer disposed on the base substrate wherein the insulating layer located in the bending region is provided with at least one recess and a surface of the recess includes a concave-convex structure.