Rotatable Secondary Display Flexible Circuit Protection
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Solution Overview
Problem
Multi-screen mobile phones face issues with the damage of flexible circuit boards connecting secondary display screens to the mainboard, leading to reduced service life due to external forces and curved states during screen movement.
Innovation Solution
An electronic device design featuring a flexible connection member that can be switched between fixed and unfixed states via a fixation mechanism, allowing the secondary display screen to rotate without damaging the connection, and incorporating auxiliary switching members and magnetic materials for enhanced protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the secondary display screen is made rotatable relative to the primary display screen, then the adaptability and versatility of the electronic device are improved, but the flexible circuit board is easily damaged and the service life is reduced
Solution Approach 1:
The patent applies the dynamics principle by making the fixation mechanism switchable between fixed and movable states. The fixation member can dynamically adjust its state: in the first state, it fixes the flexible circuit board to protect it during normal use; in the second state, it allows the flexible circuit board to move freely, enabling the secondary display screen to rotate without damage. This dynamic adjustment resolves the contradiction between rotatability and reliability.
2Reliability
If the flexible circuit board is fixed to protect it from damage, then the reliability is improved, but the secondary display screen cannot rotate freely
Solution Approach 1:
The fixation mechanism is designed to be dynamically switchable between two states. When fixed, it provides reliable protection for the flexible circuit board. When released, it allows the secondary display screen to rotate freely. This dynamic characteristic enables the system to adapt to different operational requirements, resolving the contradiction between protection and rotational freedom.
Solution Approach 2:
The fixation mechanism is preliminarily set in the fixed state to protect the flexible circuit board during normal operation. When rotation is needed, the user can switch to the movable state. This preliminary protection state ensures reliability while maintaining the capability for rotational movement when required.
Data Source
AI summary
An electronic device is provided. The electronic device includes: a housing; a primary display screen arranged inside the housing and connected to a mainboard; a secondary display screen; a flexible connection member within which a signal transmission line connecting the secondary display screen to the mainboard is provided, one end of which is connected to the secondary display screen, and the other end of which is connected to a side wall of the housing, such that the secondary display screen is rotatable relative to the primary display screen; and a fixation mechanism corresponding to the flexible connection member and arranged on the side wall to which the flexible connection member is connected, the flexible connection member may be switched between a first state where the flexible connection member is fixed by the fixation mechanism and a second state where the flexible connection member is not fixed by the fixation mechanism.