Rotatable Display Optical Film Positioning Mechanism
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Solution Overview
Problem
Rotatable displays face issues with optical film hanging down or experiencing excessive displacements when rotated, leading to poor optical quality due to insufficient limiting, especially in high-level applications requiring uniform brightness.
Innovation Solution
A display design featuring a frame body with perpendicular sidewalls and positioning structures that securely hold an optical film in place, using first and second positioning pieces and structures to maintain the film's position regardless of orientation, preventing hanging or displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display is rotated from landscape to portrait orientation, then the display can adapt to different application scenarios, but the optical film is prone to hang down or have displacements due to insufficient limiting
Solution Approach 1:
The optical film is divided into multiple positioning regions with different limiting structures. First positioning structures are provided at the first and third sidewalls, while second positioning structures are provided at the second and fourth sidewalls. This segmentation allows each sidewall to have specialized positioning features that work together to maintain film stability in any orientation.
Solution Approach 2:
The positioning structures are designed to be universally effective in all orientations. The first positioning structures extend from the first and third sidewalls, while the second positioning structures extend from the second and fourth sidewalls, creating a universal positioning system that functions equally well whether the display is in landscape or portrait mode.
2Device complexity
If traditional limiting structures are used, then the structure is simple, but the optical quality is poor due to film hanging or displacement
Solution Approach 1:
Different positioning structures are applied at different locations on the frame body. The first positioning structures are specifically designed for the first and third sidewalls, while the second positioning structures are designed for the second and fourth sidewalls. Each location has quality tailored to its specific positioning needs, ensuring optimal film stability throughout the entire frame.
3Manufacturing precision
If positioning structures are added to prevent film displacement, then the positioning precision improves, but the device complexity increases
Solution Approach 1:
The first and second positioning structures are merged into a unified positioning system integrated into the frame body. Rather than adding separate independent positioning mechanisms, the patent combines multiple positioning features into the frame body structure itself, achieving precise film positioning while minimizing overall structural complexity.
Data Source
AI summary
A display includes a frame body and an optical film. Each of the first side wall and the third side wall of the frame body has a first positioning structure. Two end portions of each of the second sidewall and the fourth sidewall are bent toward the accommodating space to form second positioning structures. The optical film includes first positioning pieces and second positioning pieces. The first positioning pieces are respectively at the first side and the third side of the optical film, and each of the first positioning structures passes through a corresponding one of the first positioning pieces. The second positioning pieces respectively extend along a direction parallel to the first side or the third side of the optical film, and each of the second positioning pieces corresponds to a corresponding one of the second positioning structures.