Display Device Anti-Stripping Pad Sloped Surface Adhesion
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Solution Overview
Problem
The attachment of functional panels to display devices using adhesives can lead to weakened adhesion due to external forces, causing the polarizing plate to separate from the substrate, resulting in defects like white spots on the screen due to incomplete adhesive strength and transmittance errors.
Innovation Solution
A display device design that includes a display panel with polarizing plates on both surfaces and an anti-stripping pad with a sloped upper surface, where the adhesive is applied to fill the boundary surface between the pad and the polarizing plate, ensuring uniform adhesion and stress distribution away from the polarizing plate, thereby preventing separation and defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is used to attach functional panel to display panel, then the functional panel can be securely mounted, but the adhesion strength weakens under external forces causing polarizing plate separation
Solution Approach 1:
A pad is introduced as an intermediary component between the functional panel and the display panel. This pad has a larger area than both the functional panel and the polarizing plate, and serves as a stress-distributing mediator that prevents concentrated forces from reaching the adhesive layer at the polarizing plate boundaries, thereby preventing separation while maintaining secure mounting
2Ease of manufacture
If adhesive is applied to attach functional panel, then attachment is achieved, but incomplete adhesive coverage causes white spot defects on screen
Solution Approach 1:
The pad acts as an intermediary that provides a larger, more stable surface for adhesive application. The adhesive is applied between the functional panel and the pad rather than directly to the display panel, allowing for more complete and uniform adhesive coverage. This eliminates the white spot defects caused by incomplete adhesive coverage while simplifying the attachment process
Data Source
AI summary
Provided is a display device that includes, for example, a display panel to which a first polarizing plate and a second polarizing plate are attached to a lower surface and an upper surface thereof; a pad attached to an edge region of the upper surface of the display panel; an adhesive layer on upper surfaces of the display panel and the pad; and a functional panel attached to the upper surfaces of the display panel and the pad by an adhesive, wherein the upper surface of the pad is a sloped surface rising from a boundary with the second polarizing plate to an outer side.