Display Assembly Adhesive Layer Thickness Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display technologies face challenges in protecting the bent portions of display panels from damage during the manufacturing process, particularly when the adhesive used to secure the panel can flow onto protection films and be pulled off, compromising the integrity of the adhesive layer's protective function.
Innovation Solution
A display assembly and manufacturing method involving a cured adhesive layer with specific thickness and shape configurations, including a first portion covering the bendable portion and a second portion covering the spacer, both thinner than the blocking layer, with a flat surface distal to the spacer, ensuring effective protection and allowing for a narrower frame without compromising quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is coated on the bent portion to protect it from damage, then the protection function is improved, but the adhesive may flow onto the protection film and be pulled off, compromising the adhesive layer's integrity
Solution Approach 1:
The adhesive layer is designed with different thicknesses in different regions: a first thickness in the first area (covering the bent portion) and a second thickness in the second area (covering the spacer portion), where the first thickness is greater than the second thickness. This local variation ensures adequate protection at the bent portion while preventing adhesive from reaching and adhering to the protection film at the spacer portion, thus maintaining adhesive layer integrity.
Solution Approach 2:
The adhesive layer is segmented into distinct regions with different thickness characteristics. The first area has a greater thickness for protection, while the second area has a lesser thickness to prevent film adhesion. This segmentation allows the adhesive layer to simultaneously fulfill multiple functions: protecting the bent portion and preventing damage to the protection film during subsequent peeling processes.
2Reliability
If the adhesive layer is made thicker to improve protection, then the protective function is enhanced, but the frame width increases, preventing narrow frame design
Solution Approach 1:
The adhesive layer implements local quality by having a greater thickness only in the first area where the bent portion is located (requiring maximum protection), while maintaining a lesser thickness in the second area covering the spacer portion. This localized thickness variation provides enhanced protection exactly where needed without uniformly increasing the overall frame width, thereby enabling narrow frame design while maintaining protective functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively protects the bent portions of the display panel, facilitates a narrower frame design, and ensures the adhesive layer remains intact during the bending process, enhancing the overall quality and reliability of the display assembly.
Implementation Method 1
a cured adhesive layer outside an area of the screen portion and including: a first portion covering the bendable portion and a second portion covering the spacer portion
Data Source
AI summary
The present disclosure provides a display assembly, including: a display panel which includes: a screen portion, a chip providing portion, a bendable portion located between the screen portion and the chip providing portion, and a spacer portion connected between the bendable portion and the screen portion; a blocking layer on the screen portion; a cured adhesive layer located outside an area of the screen portion and including: a first portion covering the bendable portion and a second portion covering the spacer portion, the first portion and the second portion each having an thickness less than that of the blocking layer, the second portion is in contact with the blocking layer, and a surface of the second portion distal to the spacer portion is substantially flat. The present disclosure also provides a manufacturing method of the display assembly and a display device.