Rollable Display Folding Support and FPCB Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices with rollable displays face challenges in stably supporting the display when it is slid out and ensuring electrical connectivity between the circuit board and electronic components, particularly due to the mechanical stress and flexibility requirements.
Innovation Solution
The design incorporates a mechanical support system with a main bracket, roller member, and folding support members that allow the rollable display to be stably extended and retracted, while a flexible printed circuit board (FPCB) is used to maintain electrical connections through rotating support members, which also function as a heat dissipation and antenna structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a rollable display is slid out from the housing, then the display area is increased, but the stability of the display support deteriorates
Solution Approach 1:
The folding support member transitions between different states (folded and unfolded) to dynamically adapt the support structure to the display's position. When the display is retracted, the support member is folded to save space; when the display is extended, the support member is unfolded to provide stable support, resolving the contradiction between display area and support stability.
Solution Approach 2:
The support structure is divided into multiple segments (first support member, second support member, third support member) that can independently fold and unfold. This segmentation allows the support system to adapt its configuration based on the display's state, providing stability when needed while maintaining compactness when retracted.
2Reliability
If a rigid circuit board is used to connect electronic components, then electrical connectivity is ensured, but flexibility and adaptability to mechanical state changes deteriorate
Solution Approach 1:
A flexible circuit board is used instead of a rigid one, allowing the circuit board to bend and flex as the folding support member transitions between states. This flexible circuit board maintains electrical connectivity between the circuit board and electronic components while adapting to the mechanical state changes of the support structure.
3Stability of the object's composition
If the folding support member is disposed to form an angle with the main bracket when the display is exposed, then support stability is improved, but device complexity increases
Solution Approach 1:
The folding support member is designed to be foldable and nestable against the main bracket when not in use. The first support member, second support member, and third support member can be folded sequentially, with each member nesting against the previous one, creating a compact configuration that reduces device complexity while maintaining support capability when needed.
Data Source
AI summary
An electronic device is provided. The electronic device includes a rollable display. The electronic device may include a main bracket configured to support the first portion of the rollable display, a roller member disposed in the first direction from the main bracket and arranged in a third direction perpendicular to the first direction, at least one folding support member disposed between the main bracket and the roller member and configured to support the second portion of the rollable display, a circuit board disposed to overlap at least a portion of the main bracket, at least one electronic component disposed adjacent to the roller member, and a FPCB configured to electrically connecting the main circuit board and the electronic component, wherein the FPCB is disposed to pass through the folding support member and extends from a portion of the circuit board to a portion of the electronic component.