Rollable Display Roller Structure for S-PCB Protection
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Solution Overview
Problem
Display panels face damage and dislocation issues during winding and unwinding processes due to the lack of effective protection for the source printed circuit board (S-PCB) when rolled around a roller.
Innovation Solution
A display device design that includes a flexible display panel with an S-PCB seated on a roller with a seating portion formed by removing part of the roller's outer circumference, and a cover extending longitudinally to protect the S-PCB, ensuring stable winding and unwinding without dislocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the S-PCB is placed on a flat roller surface for winding, then the winding process is simple, but the S-PCB may be damaged or dislocated during rolling
Solution Approach 1:
A cover is introduced as an intermediary component between the roller and the S-PCB. The cover extends in the longitudinal direction of the roller and covers the S-PCB, preventing damage and dislocation during winding while maintaining the simplicity of the winding process.
2Device complexity
If the S-PCB is exposed during winding, then the structure is simple, but the S-PCB cover may be dislocated from its regular position
Solution Approach 1:
The cover is pre-positioned on the roller before the S-PCB is placed. The cover extends in the longitudinal direction of the roller and is positioned to cover the S-PCB, preventing dislocation during the winding process while maintaining structural simplicity.
3Device complexity
If no seating portion is formed on the roller, then the roller structure is simple, but the S-PCB cannot be stably accommodated
Solution Approach 1:
The roller surface is segmented into a seating portion and a non-seating portion. The seating portion is formed by removing a part of the outer circumferential surface of the roller, creating a dedicated accommodation space for the S-PCB that provides stable support during winding.
Data Source
AI summary
Disclosed is a display device. The display device of the present disclosure includes a flexible display panel, a source printed circuit board (S-PCB) located adjacent to a lower side of the flexible display panel and electrically coupled to the flexible display panel, a roller comprising a seating portion accommodating the S-PCB, wherein the seating portion is formed by removing a part of an outer circumferential surface of the roller, wherein the flexible display panel is wound around or unwound from the roller, and a cover extending in a longitudinal direction of the roller to cover the S-PCB.