Rollable Display Panel Guide Member and Coating
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Solution Overview
Problem
As screen sizes of mobile devices increase, portability decreases, and existing rollable display technologies fail to prevent scratches from foreign materials attaching to and becoming trapped between overlapping display panel surfaces when rolled and unrolled.
Innovation Solution
A rollable display design featuring a flexible display panel, a rotating roller, a guide member with a coil shape to prevent panel overlap, and a foreign material introduction preventing member, such as a brush or rubber, to prevent scratches and foreign material attachment, along with a static electricity preventing coating layer to ease panel retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flexible display panel is rolled around the rolling member, then portability is improved, but foreign materials can attach to and become trapped between overlapping panel surfaces causing scratches
Solution Approach 1:
A guide member with a coil shape is introduced as an intermediary component between the flexible display panel and the rolling member. This guide member prevents foreign materials from attaching to the panel during rolling and unrolling operations, thereby resolving the contradiction between improved portability and prevention of scratch damage.
Solution Approach 2:
The harmful factor (foreign materials) is extracted or removed from the system by using the guide member to prevent these materials from becoming trapped between overlapping panel surfaces during rolling operations.
2Area of moving object
If the display panel is made larger, then viewing capability is improved, but device portability deteriorates
Solution Approach 1:
The display panel transitions from a static fixed-size configuration to a dynamic rollable configuration. The panel can be extended to provide a large viewing area when needed and rolled up to improve portability when not in use, thereby resolving the contradiction between display area and portability.
3Volume of moving object
If the flexible display panel is rolled tightly around the rolling member, then space efficiency is improved, but friction increases making retraction difficult
Solution Approach 1:
The guide member acts as an intermediary that reduces friction between the flexible display panel and the rolling member during retraction. This allows the panel to be rolled tightly into a compact space while maintaining ease of retraction by minimizing frictional resistance.
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 allows for increased portability while preventing scratches and foreign material attachment, ensuring smooth operation and reduced friction during panel retraction, enhancing user experience and device durability.
Implementation Method 1
a guide member having a coil shape, positioned in the body member, and allowing portions of the flexible display panel not to be closely adhered to each other
Implementation Method 2
The guide member can have a static electricity preventing coating layer formed on a surface thereof that the flexible display panel contacts
Data Source
AI summary
A rollable display is disclosed. In one aspect, the rollable display includes a flexible display panel, a housing having an internal space defined therein, and a rolling member positioned in the housing and configured to have the flexible display panel rolled therearound. The rollable display also includes a guide member positioned in the housing and having a coil shape. The guide member is configured to separate portions of the flexible display panel from each other.