Curved Display Panel Adhesive Layout for Stable Bending Fixation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices, particularly flexible and curved display devices, face challenges in stably fixing the display panel in curved areas, leading to potential detachment and instability.
Innovation Solution
A display device design that includes a display panel with distinct adhesive layers for flat and curved areas, using a first adhesive layer with temperature-dependent adhesion for the curved area and a second adhesive layer for the flat area, allowing stable fixation to a cover panel through controlled heat application and UV curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single adhesive layer is used for both flat and curved areas, then the manufacturing process is simple, but the curved area cannot be stably fixed leading to detachment
Solution Approach 1:
The adhesive layer is segmented into two distinct types: a first adhesive layer for the curved area with temperature-dependent adhesion, and a second adhesive layer for the flat area. This segmentation allows each adhesive to be optimized for its specific functional requirements, resolving the contradiction between reliability and complexity.
Solution Approach 2:
Different adhesive properties are applied to different locations: the first adhesive layer has temperature-dependent adhesion suitable for curved areas requiring stable fixation, while the second adhesive layer has different properties suitable for flat areas. This local differentiation ensures optimal performance in each region while maintaining overall system reliability.
2Shape
If the display panel is bent to create curved areas, then the display device gains flexibility and modern design, but the curved area becomes unstable and prone to detachment
Solution Approach 1:
The adhesion parameter of the first adhesive layer is changed based on temperature: at low temperatures (during bending), the adhesive has weak adhesion allowing easy panel bending and shaping; at high temperatures (during operation), the adhesive develops strong adhesion to stabilize the curved area and prevent detachment.
Solution Approach 2:
The adhesive system transitions from a static, constant-adhesion design to a dynamic system where adhesion strength changes with temperature. This allows the adhesive to adapt its properties: weak adhesion during the bending process for shape formation, and strong adhesion during operation for stability maintenance.
3Reliability
If a temperature-dependent adhesive is used for curved areas, then stable fixation is achieved, but additional heating control is required
Solution Approach 1:
The first adhesive layer is designed to self-activate at operating temperatures without requiring external heating control systems. The temperature-dependent adhesion property allows the adhesive to automatically transition from weak (during manufacturing) to strong (during operation) states, eliminating the need for complex heating control infrastructure.
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
Ensures stable attachment of the display panel's curved areas to the cover panel, enhancing durability and maintaining the display's structural integrity during bending and use.
Implementation Method 1
the first adhesive layer has an adhesive property different from an adhesive property of the second adhesive layer
Implementation Method 2
UV curing
Data Source
AI summary
A display device includes a display panel including a first area, a second area disposed on the first area, and a bending area extending from the first area to the second area, where the first area includes a first flat area and a first curved area disposed between the bending area and the first flat area, a driver disposed on the first flat area, a cover panel disposed between the first area and the second area, and a space layer including a first adhesive layer disposed between the cover panel and the first curved area and a second adhesive layer disposed between the cover panel and the first flat area. Here, the first adhesive layer has an adhesive property different from an adhesive property of the second adhesive layer.