Rollable Display Attachment Structure With Sliding Housing And Flat Section Fixing
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Solution Overview
Problem
Rollable displays face issues with the end being lifted off due to repeated stress and increased rigidity, especially when transitioning between states of being drawn into and out of the housing.
Innovation Solution
The implementation of a housing structure with a slidable second housing, a flexible display with portions that move along different sections, and a roller unit, along with a fixing mechanism using a fastener, adhesive layers, and slit structures to reduce friction and secure the display in place, preventing the end from being lifted off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rollable display is allowed to move freely between curved and flat sections, then the display can be drawn in and out of the housing, but the repeated stress and increased rigidity cause the end of the display to be lifted off
Solution Approach 1:
A flat section is constructed inside the housing before the display reaches it during retraction. This flat section serves as a pre-prepared stable region where the display can be securely attached, preventing the lifting-off problem that occurs when the display is repeatedly bent between curved and flat sections.
Solution Approach 2:
The flat section acts as an intermediary structure between the curved sections of the housing. It provides a stable intermediate state where the display can be securely fixed, breaking the direct transition between curved sections and preventing the cumulative stress that causes display detachment.
2Reliability
If the display is fixed in a flat section to prevent lifting off, then attachment stability is improved, but the display movement and retraction functionality is restricted
Solution Approach 1:
The system dynamically transitions between two states: during retraction, the display moves freely through curved sections; upon reaching the flat section, it transitions to a fixed stable state. This dynamic switching maintains both movement capability and attachment stability at different phases of operation.
Solution Approach 2:
The housing interior is segmented into distinct functional zones: curved sections that guide display retraction and a flat section that provides stable attachment. This spatial segmentation allows different regions to serve different purposes, enabling both movement and stability.
3Reliability
If adhesive layers are used to secure the display in the flat section, then attachment stability is improved, but frictional forces during movement increase
Solution Approach 1:
Adhesive layers are applied locally only in the flat section where stable attachment is needed, rather than across the entire display surface. This localized application provides stability where required while minimizing friction during the movement phases when the display travels through curved sections.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively prevents the end of the rollable display from being lifted off by securing it in a flat section, reducing frictional forces through slit structures, and ensuring stable movement along curved and flat sections during state transitions.
Implementation Method 1
The flexible display may include a first portion, a second portion extending from the first portion in a first direction, and a third portion extending from the second portion. The third portion may be fixed to a flat region of the third section in the first state.
Implementation Method 2
The rollable display includes a roller unit which enables the display to move. A movement section of the rollable display has a curved section, in which the display moves by being bended along the roller unit
Data Source
AI summary
According to various embodiments of the disclosure, an electronic device may include: a housing, a flexible display, and a roller unit. The flexible display may include a first portion, a second portion extending from the first portion in a first direction, and a third portion extending from the second portion. The second portion may be drawn into the inside of a first housing by sliding of a second housing in the first direction when the electronic device is converted from a second state to a first state, and may be drawn out from the inside of the first housing by sliding of the second housing in a second direction opposite to the first direction when the electronic device is converted from the first state to the second state. The third portion may be fixed to a flat region of the third section in the first state.