Rollable Display Support Body Planar Circuit Substrate Storage
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Solution Overview
Problem
In rollable electronic apparatuses, such as display devices, the assembly of circuit substrates and display elements is challenging due to the difficulty in forming and using slits in tubular support bodies, leading to potential damage during assembly and storage.
Innovation Solution
A rollable electronic apparatus design featuring a flexible electronic device, a flexible cable, and a tubular support body with elliptical cross-sectional shape and planar portions, where the circuit substrate is mounted on the planar portions and the flexible device is wound around the support body, reducing the need for slits and minimizing damage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a slit is formed in the tubular support body to place the circuit substrate, then the circuit substrate can be connected to the display element, but it is difficult to precisely form the slit and the display element or cable may be damaged during assembly
Solution Approach 1:
The support body is divided into a tubular portion and a plate-like portion, with the circuit substrate placed on the plate-like portion rather than through a slit in the tubular portion. This segmentation eliminates the need for precise slit formation and cable threading through narrow openings, significantly reducing assembly difficulty and damage risk.
Solution Approach 2:
The plate-like portion acts as an intermediary structure between the tubular support body and the circuit substrate. It provides a convenient platform for placing and fixing the circuit substrate, eliminating the need to form slits in the tubular portion and thread cables through difficult-to-access openings.
2Volume of moving object
If the circuit substrate is stored in the tubular support body via a slit, then compact storage is achieved, but the assembly process becomes complex and damaging
Solution Approach 1:
The support body is segmented into tubular and plate-like portions, with the circuit substrate placed on the external plate-like portion rather than inside the tubular portion. This maintains compact overall structure while eliminating complex internal slit formation and cable routing.
Solution Approach 2:
The circuit substrate is moved from an internal placement (through the tubular portion) to an external placement (on the plate-like portion). This dimensional change from internal to external placement simplifies the assembly process while maintaining compact storage.
3Volume of moving object
If the support body is rotated to wind the display element for storage, then compact storage is achieved, but the circuit substrate and cable may be damaged during the winding process
Solution Approach 1:
The support body is segmented into tubular and plate-like portions, with the circuit substrate fixed on the plate-like portion. During rotation, the cable naturally winds along with the display element without being subjected to excessive tension or bending, as the circuit substrate remains stationary on the plate-like portion.
Solution Approach 2:
The plate-like portion provides a stable mounting platform for the circuit substrate before the winding process begins. This pre-positioning ensures that the cable connection point is fixed and protected, preventing damage during the subsequent rotation and winding operation.
Data Source
AI summary
A rollable electronic apparatus being windable, includes: a flexible electronic device; a flexible cable; a circuit substrate; and a support body having a tubular body, wherein the flexible electronic device includes a terminal portion, the flexible cable connects the terminal portion and the circuit substrate, a drive circuit is mounted on the circuit substrate, the flexible electronic device and the flexible cable are wound on an outer circumferential surface of the support body by rotating the support body, the support body has, in a cross-sectional view, two curved portions and a planar portion connecting the two curved portions, and the circuit substrate is stored in the planar portion in a state in which the flexible cable is wound.