Foldable Dual-Panel Display Assembly With a Sub-3 mm Screen Joint
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Solution Overview
Problem
Existing portable display devices face challenges in effectively folding and unfolding display panels while minimizing the non-display area and ensuring strong structural integrity, as well as integrating input units and optical members.
Innovation Solution
A portable display device design that joins two display panels to form a single screen with a distance of less than 3 mm between panels and input units, utilizing a hinge-type connection shaft, and incorporates optical members to minimize the non-display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If two display panels are joined to form a single screen, then the screen area is enlarged, but the joint area (non-display area) increases
Solution Approach 1:
The display device is divided into multiple panel housings (first panel housing, second panel housing) that can be folded and unfolded independently. Each housing contains a display panel, and the segmentation allows the panels to be joined at an edge while maintaining separate structural support, thereby minimizing the joint area between panels.
Solution Approach 2:
The patent introduces a third dimension by implementing a shaft structure that extends in a direction perpendicular to the display panels. This shaft allows the panel housings to rotate relative to each other, enabling the panels to be joined at their edges while maintaining minimal overlap or gap, thus reducing the joint area.
2Strength
If a strong shaft structure is implemented for folding and unfolding, then structural integrity is improved, but device complexity increases
Solution Approach 1:
The shaft structure is merged with the panel housings to form an integrated assembly. The shaft is positioned within the joint region between the first and second panel housings, and its ends are connected to respective panel housings, creating a unified structure that provides folding functionality while maintaining structural integrity without requiring separate complex mechanisms.
Solution Approach 2:
The shaft structure serves multiple functions: it enables folding and unfolding of the display panels, maintains structural integrity during movement, and positions the panels at precise angles. This multi-functionality reduces the need for additional separate components, thereby managing device complexity while achieving strong structural performance.
3Area of stationary object
If display panels are disposed to be contiguous, then the joint area is minimized, but manufacturing precision requirements increase
Solution Approach 1:
The shaft structure acts as an intermediary element between the first and second panel housings. It provides a mechanical interface that facilitates precise alignment and positioning of the display panels during assembly and operation, thereby enabling the panels to be disposed contiguously with minimal joint area while managing the precision requirements through the shaft's guiding function.
4Adaptability or versatility
If input units and optical members are integrated, then functionality is improved, but device complexity increases
Solution Approach 1:
Input units and optical members are merged with the display panels and panel housings to form an integrated display device. The input units are positioned on the display panels, and optical members are integrated into the panel structures, creating a unified system that provides enhanced functionality while managing complexity through coordinated design of these components within the same structural framework.
Data Source
AI summary
A portable display device is provided in which two display panels are joined to each other to form a single screen when two panel housings are unfolded from a folded state. The portable display device includes at least two panel housings and display panels that are mounted on the panel housings, respectively. When the panel housings are unfolded, the display panels are joined to each other to form a single screen. The distance between the display panels when the display panels are contiguous to each other is less than 3 mm and the distance between input units or between input sensors is less than 3 mm.