Expandable Display Support Panel Slits Bridges
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Solution Overview
Problem
Expandable display devices with flexible panels face challenges in durability and supportability, particularly when subjected to external impacts and require improved mechanisms for stable expansion and reduction in size.
Innovation Solution
The design incorporates a housing with sliding portions and a support panel featuring slits and bridges, along with rollers, to enhance the stability and supportability of the display panel, allowing for flexible and secure expansion and reduction of the screen size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible display panel is used to enable expandable screen functionality, then the display device can be expanded or reduced in size, but the durability and supportability under external impacts deteriorates
Solution Approach 1:
The patent uses a composite structure combining a flexible display panel with a rigid support panel. The support panel includes a core layer with slits and bridge portions that provide structural reinforcement while allowing the flexible display panel to maintain its bending capability. This composite approach resolves the contradiction by integrating materials with different mechanical properties to achieve both flexibility and durability.
Solution Approach 2:
The support panel is segmented into multiple regions with slits and bridge portions, allowing differential movement and stress distribution. The slits enable the support panel to flex locally while the bridge portions maintain overall structural integrity, resolving the contradiction between flexibility and durability through strategic segmentation of the support structure.
2Strength
If the flexible display panel is made more rigid to improve supportability, then the supportability improves, but the flexibility and ease of expansion deteriorates
Solution Approach 1:
The support panel exhibits local quality variations through its slit and bridge portion design. Different regions of the support panel have different structural properties - the slit regions allow flexibility while the bridge regions provide rigidity. This local differentiation resolves the contradiction by providing both supportability and flexibility where needed within the same structure.
Solution Approach 2:
The support panel is designed to dynamically adapt its structural properties during expansion and contraction. The slits allow the panel to flex and deform during movement, while the bridge portions maintain structural integrity. This dynamic behavior resolves the contradiction between rigidity for support and flexibility for expansion.
3Reliability
If the support panel is made completely rigid to improve durability, then the durability improves, but the expandability and portability deteriorates
Solution Approach 1:
The support panel is segmented into slits and bridge portions, creating a structure that is rigid overall but flexible locally. This segmentation allows the panel to maintain durability through its bridge portions while enabling expandability through the flexible slit regions, resolving the contradiction between durability and expandability.
Solution Approach 2:
The support panel dynamically transitions between rigid and flexible states during operation. During normal use, the bridge portions provide rigidity for durability, while during expansion/contraction, the slits allow flexible deformation. This dynamic property resolution resolves the contradiction between durability and expandability.
Data Source
AI summary
An expandable display device includes: a housing including a fixing portion; a pair of sliding portions provided at respective sides of the fixing portion, each of the sliding portions being configured to be drawn out from the housing along a first direction such that a distance from the respective sliding portion to the fixing portion is changed; and a panel unit including: a fixing display unit on the fixing portion; and a pair of expanding display units on the pair of sliding portions and having a variable exposing area; a flexible display panel including a plurality of pixels and having a screen at a first side thereof; and a support panel attached to a second side of the flexible display panel facing the first side, the support panel including a plurality of slits extending in a second direction crossing the first direction.