Flexible OLED Display Assembly with Movable Foldable Structure
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Solution Overview
Problem
Flexible OLED display panels face damage from bending stress due to lack of effective dynamic bending structures that allow for repeatable folding without compromising the display area.
Innovation Solution
A flexible OLED display assembly with a movably foldable structure featuring a folding area, complementary supports, and a stretchable flexible connecting member that extends to support the OLED panel, preventing displacement and stress during bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the OLED panel is made foldable to enable dynamic bending, then the display device becomes flexible and portable, but the OLED panel is damaged by bending stress
Solution Approach 1:
The support structure is divided into multiple substrates (first substrate, second substrate, third substrate) that can independently move relative to each other along the folding line. This segmentation allows each substrate to handle stress separately, preventing damage to the OLED panel while enabling flexible folding capability.
Solution Approach 2:
A folding line is introduced as an intermediary element between the substrates, allowing controlled bending and movement. The folding line acts as a mediator that accommodates the bending stress without transmitting it to the OLED panel, thus protecting the panel integrity while enabling flexibility.
2Area of stationary object
If the display area is positioned at the bending area to maximize screen utilization, then the display area is larger, but the flexible OLED display assembly is damaged by bending stress
Solution Approach 1:
The support structure is segmented into multiple substrates that can move independently along the folding line. This allows the display area to be positioned on the substrates away from the folding line, maximizing the display area while the folding line and its associated components handle the bending stress separately.
Solution Approach 2:
The folding line serves as an intermediary that separates the display area from the bending stress. By positioning the display area on the substrates and using the folding line as a mediator for bending, the display area is protected from direct bending stress while maintaining large screen utilization.
3Reliability
If a rigid support structure is used to protect the OLED panel, then the panel integrity is maintained, but the bending repeatability is poor
Solution Approach 1:
The support structure is designed with dynamic characteristics, allowing the substrates to move relative to each other along the folding line during bending. This dynamic design enables the structure to adapt to repeated bending cycles while maintaining panel protection, achieving both reliability and bending repeatability.
Solution Approach 2:
The support structure is segmented into multiple movable substrates connected at the folding line. This segmentation allows each substrate to move independently, providing good bending repeatability while the overall structure continues to protect the OLED panel through coordinated movement of the substrates.
4Reliability
If the substrates are arranged to abut against each other to support the OLED panel, then the panel integrity is protected, but the bending movement is restricted
Solution Approach 1:
The abutting arrangement of substrates is designed to be dynamic rather than fixed. The substrates can move relative to each other along the folding line while maintaining their abutting support relationship, allowing the structure to provide continuous panel support during bending movements and achieve both reliability and folding flexibility.
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 enables fine repeatability of bending and avoids damage to the display area by distributing bending stress, allowing the OLED panel to be folded without compromising its integrity.
Implementation Method 1
a flexible connecting member is positioned under the first support and the second support, both ends of the flexible connecting member are respectively connected to the first substrate and the second substrate, and a length of the flexible connecting member is equal to a sum of a length of the first substrate and a length of the second substrate in an original normal stage of the flexible connecting member; and wherein when the first folding area of the OLED panel is folded along the folding line of the first folding area such that the second substrate covers the first substrate, the flexible connecting member being stretchable from the original normal state to an extended state
Data Source
AI summary
A flexible organic light emitting diode display assembly is provided and includes an OLED panel, a first substrate, and a second substrate, wherein a first support extends outwardly from one end of the first substrate, a second support extends outwardly from one end of the second substrate, the first support and the second support are arranged to abut against each other, the OLED panel is disposed on the first substrate, the first support, the second support, and the second substrate. A flexible connecting member is positioned under the first support and the second support. When the OLED panel is bent such that the second substrate covers the first substrate, the flexible connecting member being stretchable from an original normal state to an extended state.