Display Panel Groove Bonding for Stable Circuit Film Adhesion
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Solution Overview
Problem
Existing display devices face issues with adhesive force of anisotropic conductive films, leading to reliability and driving failure due to deviation of the adhesive member.
Innovation Solution
Incorporating grooves on the display panel's insulating layer and a concave-convex surface pattern to enhance the adhesive force between the display panel and the printed circuit film, using an adhesive member to fill these grooves and pad electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a flat surface is used for adhesive bonding, then the manufacturing process is simple, but the adhesive force is insufficient and deviation occurs
Solution Approach 1:
The patent applies local quality by creating grooves at specific locations on the display panel surface where adhesive bonding is needed. Instead of making the entire surface complex, only localized groove structures are formed to enhance adhesive force at critical bonding areas, while maintaining simplicity elsewhere.
Solution Approach 2:
The patent transitions from a two-dimensional flat surface to a three-dimensional structure with grooves. By adding depth and vertical dimension to the bonding surface through groove formation, the adhesive member can interlock with the display panel, significantly improving bonding strength without excessively complicating the overall device.
2Reliability
If grooves are added to enhance adhesive force, then bonding strength improves, but manufacturing complexity increases
Solution Approach 1:
The bonding surface is segmented into multiple grooves distributed across the display panel. This segmentation allows the adhesive member to form multiple bonding points simultaneously, improving overall bonding reliability while keeping each individual groove simple in structure and easy to manufacture.
Solution Approach 2:
The patent optimizes groove parameters such as width, depth, and spacing to achieve the desired balance between bonding strength and manufacturability. By carefully controlling these geometric parameters, the grooves provide sufficient adhesive force enhancement while remaining compatible with standard manufacturing processes.
Data Source
AI summary
A display device and a method for fabricating a display device are provided. The display device includes a display panel, a printed circuit film, and an adhesive member interposed between the display panel and the printed circuit film, wherein the display panel comprises an insulating layer and a plurality of grooves overlapping with the adhesive member in a thickness direction of the display device and disposed on a surface of the insulating layer, and wherein the plurality of grooves is filled with the adhesive member.