Display Panel Edge Curvature to Prevent Corner Collapsing
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Solution Overview
Problem
Conventional display panels with right-angle edges are prone to collision and edge/corner collapsing during transportation, leading to reduced product quality and increased production costs due to stress concentration.
Innovation Solution
The display panel features a backplane with smooth transition side surfaces formed by grinding, reducing edge and corner stress concentrations, and includes a manufacturing method that modifies the initial backplane by creating transition side surfaces and sub-surfaces to enhance edge durability and connection lead stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If right-angle edges are used in display panels, then manufacturing is simple, but edge and corner collapsing occurs during transportation due to stress concentration
Solution Approach 1:
The patent applies curvature by rounding the corners and edges of the display panel backplane. Instead of sharp right-angle corners, the design implements curved transition surfaces with specific radius values (R1, R2, R3, R4) at each corner. This curvature distributes stress more evenly during transportation, preventing edge and corner collapsing while maintaining manufacturing feasibility through standard CNC machining processes.
2Manufacturing precision
If sharp corners are used in display panels, then manufacturing precision is easier to achieve, but stress concentration leads to reduced product quality
Solution Approach 1:
The patent implements curved transition surfaces at all four corners of the backplane with specifically defined radius values. This curvature eliminates stress concentration points that would exist at sharp corners, thereby improving product quality and reliability during transportation while maintaining manufacturing precision through controlled machining parameters.
Solution Approach 2:
The patent changes the geometric parameters of the corner regions by introducing specific radius values (R1, R2, R3, R4) for the curved transition surfaces. This parameter modification transforms the corner geometry from sharp angles to curved surfaces, fundamentally altering the stress distribution characteristics and eliminating stress concentration without compromising manufacturing precision.
3Strength
If transition side surfaces with curvature are added to the backplane, then edge strength is enhanced, but device complexity increases
Solution Approach 1:
The patent enhances edge and corner strength by implementing curved transition surfaces with specifically defined radius values at each corner of the backplane. These curved surfaces distribute mechanical stress more effectively during transportation, significantly improving durability. The complexity increase is managed through standardized machining processes and consistent application of the same curvature principle at all corners.
Data Source
AI summary
A display panel, a display device and a manufacturing method of a display panel are provided. The display panel includes a backplane and a plurality of first electrodes. The backplane includes a first main surface and a second main surface opposite to each other, and a plurality of side surfaces connecting the first main surface and the second main surface. At least one side surface in the plurality of side surfaces is a selected side surface. Two adjacent side surfaces are provided with a transition side surface therebetween, and are connected through the transition side surface. The plurality of first electrodes are disposed on the first main surface. The plurality of first electrodes are adjacent to the selected side surface.