Rollable Display Support Bars With Dual-Modulus Adhesive Bonding
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Solution Overview
Problem
Rollable electronic devices face challenges in manufacturing convenience and cost due to individually formed display supporting bars, and securing mechanical stability while enabling housings to move relative to each other.
Innovation Solution
An electronic device with a flexible display and a display support comprising a plurality of bars with processed structures, guided by adhesive members of varying elastic modulus, formed through injection molding, to enhance manufacturing convenience and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the display supporting bars are individually formed through a cutting process, then the display can be supported by multiple bars, but the manufacturing convenience decreases and manufacturing costs increase
Solution Approach 1:
The patent combines multiple individually formed bars into a single integrated display supporting member with a branched structure. This merging approach maintains the support function of multiple bars while eliminating the need for separate cutting and assembly processes, thereby improving manufacturing convenience and reducing costs.
Solution Approach 2:
The display supporting member is segmented into multiple branches that extend in different directions, with each branch providing support similar to individual bars. This segmentation allows the structure to function as multiple separate bars would while being manufactured as a single piece through injection molding.
2Adaptability or versatility
If the housings are configured to move relative to each other (slide), then the device enables rollable display functionality, but mechanical stability becomes difficult to secure
Solution Approach 1:
The patent implements a dynamic structure where the display supporting member can change its configuration between extended and retracted states. The branched structure with movable connections allows the housings to slide relative to each other while maintaining mechanical stability through the interlocking branch design.
Solution Approach 2:
The display supporting member uses a composite structure combining rigid branched support elements with flexible adhesive members. This composite approach provides both the mechanical stability needed for structure integrity and the flexibility required for housing movement and rollable functionality.
3Device complexity
If a single adhesive member is used for the entire display, then the structure is simple, but the durability and prevention of inter-layer separation is reduced
Solution Approach 1:
The patent applies different adhesive members with different properties to different regions of the display. The first adhesive member with lower elastic modulus is used where flexibility is needed, while the second adhesive member with higher elastic modulus is used where strong bonding is required. This local differentiation improves durability and prevents inter-layer separation without excessive complexity.
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
The solution reduces manufacturing costs and increases durability by improving the manufacturing process and maintaining adhesivity of the display, preventing inter-layer separation.
Implementation Method 1
a first adhesive member including a 1-1th adhesive member disposed between the first display area and the first housing and a 1-2th adhesive member disposed between the second display area and the plurality of bars
Data Source
AI summary
An electronic device may include: a housing including a first housing, and a second housing accommodating at least a portion of the first housing and guiding a sliding movement of the first housing; a flexible display including a first display area connected to the first housing, and a second display area extending from the first display area; and a display support member supporting at least a portion of the second display area, wherein the display support member includes a plurality of bars which are arranged side by side and include a first processing structure formed on a side surface, wherein the plurality of bars may include: a first bar including a processing structure having a protrusion or groove shape; and a second bar at least partially facing the processing structure and including a processing structure corresponding to the shape of the processing structure.