Rollable Display Blocking Member for Debris Exclusion and Low Friction
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Solution Overview
Problem
Electronic devices with rollable displays face challenges in preventing foreign objects from entering through gaps between the display and the housing due to their fixed display structure, which limits the size of the screen and introduces potential entry points for external intrusions.
Innovation Solution
The electronic device incorporates a blocking member that includes a base portion coupled to the housing, a blocking portion slidably coupled to the base, and an elastic portion between them, which is designed to pressurize and space apart from the display to block foreign objects while minimizing friction during sliding motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking member is added to prevent foreign objects from entering through the gap, then protection against external intrusions is improved, but device complexity increases
Solution Approach 1:
The blocking member is divided into multiple functional segments: a base portion coupled to the housing, a blocking portion that contacts the display, and an elastic portion connecting them. This segmentation allows each part to perform its specific function independently while collectively solving the foreign object protection problem without requiring a completely new structural system.
Solution Approach 2:
The blocking member incorporates an elastic portion that enables dynamic adjustment of the blocking portion's position. When the display slides, the elastic portion allows the blocking portion to move and maintain contact with the display, providing continuous protection while adapting to the changing spatial relationship between components.
2Reliability
If the blocking member is positioned close to the display to effectively block foreign objects, then protection efficiency is improved, but friction between the blocking member and display increases
Solution Approach 1:
The blocking portion is designed as a flexible element that can conform to the display surface and maintain sealing contact. This flexibility allows the blocking portion to effectively block foreign objects while accommodating the sliding motion through elastic deformation rather than rigid contact, thereby reducing friction.
Solution Approach 2:
The elastic portion provides dynamic compliance, allowing the blocking portion to maintain optimal contact pressure with the display during sliding operations. The elastic material absorbs the mechanical stress of sliding, enabling the blocking member to stay close to the display for effective blocking while minimizing friction through elastic cushioning.
3Device complexity
If the display structure is made fixed to simplify the design, then device complexity is reduced, but the screen size is limited and cannot be extended
Solution Approach 1:
The display is designed with dynamic extensibility, allowing it to extend beyond the housing when needed. The blocking member's elastic design complements this by providing adaptable protection that works with both the retracted and extended display positions, enabling screen size variation without requiring a completely fixed structural approach.
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 blocking member effectively prevents foreign objects from entering the device while reducing friction between the display and housing, ensuring smooth operation and protection against external intrusions.
Implementation Method 1
an elastic portion disposed between the base portion and the blocking portion
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
According to various embodiments of the disclosure, an electronic device may comprise a housing including a first housing and a second housing for guiding a slide of the first housing; a display including a first display area disposed on the first housing and a second display area extending from the first display area and configured to move at least a portion of the second display area based on the slide of the first housing; a supporting structure configured to support at least a portion of the first display area or at least a portion of the second display area and including a plurality of bars; and a blocking member for blocking influx of an external foreign object through a gap between the housing and the display. When the first housing slides, at least one of the plurality of bars may be configured to pressurize and push out the blocking member to space the display and the blocking member apart from each other. Other various embodiments are possible.