Rollable Display Guide Structure for Vibration-Stable Bending
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Solution Overview
Problem
Existing display devices face issues with reliability and durability when applied to flexible or rollable configurations, particularly due to spacing and movement of parts causing damage and malfunction.
Innovation Solution
A display apparatus design featuring guide members with grooves and protrusions to suppress vibration, ensuring the display unit is supported and maintained without shaking during bending and unfolding, using deformable components like flexible polymer films and metal guide members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display unit is made flexible and rollable, then adaptability and user convenience are improved, but reliability and durability deteriorate due to spacing and movement of parts causing damage
Solution Approach 1:
The display unit is divided into multiple layers including a display panel, flexible substrate, and support structure. Each layer is independently designed to handle specific stresses during bending, preventing damage to individual components while maintaining overall flexibility
Solution Approach 2:
A flexible polymer film is introduced as a support structure behind the display panel. This thin film maintains the structural integrity of the display unit during bending and rolling operations while allowing the necessary flexibility for rollable configuration
2Reliability
If guide members are added to support the display unit during bending, then reliability is improved, but device complexity increases
Solution Approach 1:
Guide members with grooves and protrusions are introduced as intermediary components between the display unit and the rolling mechanism. These guide members constrain the bending path and prevent lateral movement, ensuring reliable operation without requiring complex control systems
Solution Approach 2:
The guide members feature curved grooves and protrusions that match the bending radius of the rollable display. This geometric design naturally guides the display unit through controlled arcs during rolling, eliminating the need for complex active control mechanisms
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 enhances the reliability and durability of rollable display devices by reducing stress on the display unit during repeated bending and unfolding operations, leading to a long-life, low-power display apparatus.
Implementation Method 1
one of the first guide member and the second guide member has at least one groove defined therein, while the other of the first guide member and the second guide member has at least one protrusion... to prevent vibration of the display unit
Implementation Method 2
a first guide member disposed on a rear surface of the display unit, and having at least a portion being deformable... even when the display apparatus is repeatedly bent, the display unit does not receive additional stress
Data Source
AI summary
A display apparatus includes a display unit having at least a portion being deformable, a display panel included in the display unit, a first guide member disposed on a rear surface of the display unit, the first guide member having at least a portion being deformable, a printed circuit board electrically connected to the display panel, and a second guide member configured so that at least a portion of each of the display unit and the first guide member is wound around the second guide member. One of the first guide member and the second guide member has at least one groove defined therein, while the other of the first guide member and the second guide member has at least one protrusion.