Foldable Display Window Structure for Thin Durable Panels
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Solution Overview
Problem
Existing flexible display devices face challenges in achieving high durability and maintaining desirable folding characteristics while minimizing thickness and process complexity.
Innovation Solution
A display device design featuring a window with a base glass and resin layer structure, including a groove portion and resin portions for folding and non-folding areas, along with functional layers for protection and reduced reflectance, to enhance durability and processability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a window is added to protect the display panel, then durability is improved, but thickness increases
Solution Approach 1:
The window is segmented into multiple functional layers: a base glass layer for structural support and protection, a resin layer for adhesion and flexibility, and functional layers (reflection reduction, anti-fingerprint) for surface quality. This segmentation allows each layer to be optimized for its specific function while collectively achieving protection without excessive thickness
Solution Approach 2:
The patent employs thin film structures, particularly the resin layer and functional layers, which provide protective and functional properties while maintaining minimal thickness. The flexible nature of these thin films allows the window to accommodate folding operations without breaking, thus improving durability while controlling overall thickness
2Reliability
If additional members are provided on the window for protection, then durability is improved, but process complexity increases
Solution Approach 1:
Multiple functional layers (reflection reduction layer, anti-fingerprint layer) are merged into a single integrated window structure that is applied directly to the base glass. This merging reduces the number of separate assembly steps and simplifies the manufacturing process while maintaining the protective and functional properties of each individual layer
Solution Approach 2:
The window structure is designed as a multi-functional component that simultaneously provides mechanical protection, reflection reduction, fingerprint resistance, and folding flexibility. This multi-functionality eliminates the need for separate components for each function, thereby reducing process complexity while enhancing overall durability
3Length of stationary object
If the window structure is simplified to reduce thickness, then overall thickness is reduced, but durability may be compromised
Solution Approach 1:
The window employs a composite structure combining base glass (for strength and rigidity), resin material (for flexibility and adhesion), and functional coatings (for surface properties). This composite material approach allows the thin window structure to maintain high durability by leveraging the complementary properties of each material layer
Data Source
AI summary
A display device includes a display module including folding and non-folding display portions, and a window including an upper surface which is flat and apart from the display module, and a lower surface which is flat, faces the upper surface, and is adjacent to the display module. The window includes a base glass including a base upper surface which is flat and is apart from the display module, a base lower surface facing the base upper surface with a groove portion defined therein and corresponding to the folding display portion, and a base side surface disposed between the base upper and lower surfaces, and a resin layer including a folding resin portion below the base glass to correspond to the folding display portion, a non-folding resin portion below the base glass to correspond to the non-folding display portion, and a side resin portion covering the base side surface.