Grooved Window Member Structure for Foldable Display Reliability
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Solution Overview
Problem
Existing display devices, particularly flexible displays, face challenges in maintaining mechanical reliability due to repeated folding, bending, or sliding, which can lead to structural degradation and reduced durability.
Innovation Solution
A window member design featuring a first and second flat part with groove patterns and light-blocking members that create accommodation spaces filled with a cured resin, enhancing structural integrity and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible display structure is used to enable folding and bending, then the volume of the display device is reduced and design versatility is improved, but the mechanical reliability deteriorates due to repeated folding and bending causing structural degradation
Solution Approach 1:
The window member is divided into multiple flat parts (first flat part, second flat part, third flat part) connected by pattern parts with groove patterns. This segmentation allows each segment to move independently during folding and bending, reducing stress concentration and preventing structural degradation while maintaining mechanical reliability.
Solution Approach 2:
The window member uses a thin, flexible structure with groove patterns that enable bending and folding without breaking. The groove patterns create a flexible shell effect that allows the rigid window material to deform elastically during repeated folding operations, maintaining both flexibility and mechanical reliability.
2Strength
If light-blocking members are added to define accommodation spaces for cured resin, then the structural integrity is improved, but the device complexity increases
Solution Approach 1:
The light-blocking members serve dual functions: they define the accommodation spaces for cured resin injection and simultaneously act as structural reinforcement elements. By merging these functions into a single component, the structural integrity is improved without proportionally increasing device complexity.
Solution Approach 2:
The cured resin acts as an intermediary material filled in the accommodation spaces defined by light-blocking members. This resin reinforces the window member structure, improving overall structural integrity while the light-blocking members provide the necessary mold structure for resin injection without requiring complex separate reinforcement components.
Data Source
AI summary
A window member includes a window including a first flat part, a first pattern part disposed on a side of the first flat part and having a groove pattern, and a second flat part disposed on an opposite side of the first flat part, the first pattern part being disposed between the first flat part and the second flat part; and a first light-blocking member disposed on a surface of the first flat part and not overlapping the first pattern part or the second flat part in a plan view. The first light-blocking member includes a 1-1-th light-blocking member, a 1-2-th light-blocking member, and a 1-3-th light-blocking member facing the 1-1-th light-blocking member. The 1-1-th light-blocking member, the 1-2-th light-blocking member, and the 1-3-th light-blocking member define a first accommodation space. The 1-3-th light-blocking member is spaced apart from the 1-1-th light-blocking member to define a first open area.