Rollable Display Device With Nested Control Circuit Board
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Solution Overview
Problem
Current roll-type display devices for intelligent terminals have a large curling radius, making miniaturization difficult to achieve.
Innovation Solution
A display device design featuring a display screen with oppositely disposed terminals, a reel, a lifting assembly, and a control circuit board positioned in the lifting assembly, which synchronously controls the display screen's expansion and rolling-up, reducing the curling radius and enabling miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the control circuit board is positioned outside the lifting assembly, then the display screen can be expanded with sufficient control space, but the curling radius of the reel becomes large and miniaturization is difficult
Solution Approach 1:
The control circuit board is nested within the lifting assembly, specifically positioned in the installation portion of the lifting assembly. This nesting arrangement allows the control circuit board to occupy space within the existing lifting assembly structure rather than requiring external space, thereby reducing the overall curling radius of the reel while maintaining all necessary control functions.
2Area of moving object
If the display screen is made larger to increase display area, then the screen ratio approaches the limit, but the carrying volume increases
Solution Approach 1:
The display device employs a dynamic rollable structure where the display screen can transition between expanded and rolled-up states. When expanded, the display screen provides a large display area; when rolled up, the carrying volume is minimized. The lifting assembly and reel work together to enable this dynamic transformation, allowing the device to adapt its form factor based on usage requirements.
Data Source
AI summary
A display device and a mobile terminal are provided in the present application. The display device includes a display screen, a reel, a lifting assembly, and a control circuit board. The display screen includes a first terminal and a second terminal which are disposed oppositely, wherein a display surface is connected between the first terminal and the second terminal. A reel is connected to the first terminal of the display screen. A lifting assembly is connected to the second terminal of the display screen. The lifting assembly is positioned on a side of the display screen away from the display surface, wherein the lifting assembly and the reel are configured to synchronously control the display screen to be expanded or to be rolled-up. The control circuit board is electrically connected to the display screen, wherein the control circuit board is positioned in the lifting assembly.