Folding Area Guide Groove Length Arc Alignment
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Solution Overview
Problem
Existing flexible display devices face issues with guide grooves being either too long, causing deformation of the folding area, or too short, leading to stress and damage, when folding, as they do not optimize the length of the guide groove based on the arc length of the folding area.
Innovation Solution
A display device design where the length of the guide groove is set dependent on the arc length of the folding area, ensuring the folding area maintains a uniform semi-circular shape and prevents damage by optimizing the movement of the supporter within the guide groove.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the length of the guide groove is increased to allow greater supporter movement, then the folding area can accommodate larger dimensional changes, but the folding area shape becomes deformed
Solution Approach 1:
The patent applies parameter changes by precisely calculating and setting the guide groove length based on the arc length of the folding area. The guide groove length is determined by the formula L = R × θ, where R is the radius of the folding area and θ is the folding angle. This parameter optimization ensures the supporter moves exactly the required distance without causing deformation or insufficient movement.
2Shape
If the length of the guide groove is decreased to maintain folding area shape, then shape deformation is prevented, but the supporter movement becomes insufficient causing stress and damage
Solution Approach 1:
The patent applies preliminary action by pre-calculating and setting the guide groove length before assembly based on the folding area's arc length characteristics. This preliminary design ensures that during folding operation, the supporter automatically moves the precise distance needed, preventing both deformation and stress accumulation that would lead to damage.
3Ease of manufacture
If the guide groove length is not optimized based on arc length, then manufacturing is simpler, but the folding area either deforms or suffers damage
Solution Approach 1:
The patent applies self-service by making the guide groove length automatically adapt to different folding area configurations through the formula L = R × θ. The system uses its own geometric parameters (radius and folding angle) to determine the optimal guide groove length, eliminating the need for external complex calculations or adjustments while ensuring reliable folding area performance.
Data Source
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AI summary
A display device includes a display module including non-folding areas arranged with each other in a first direction and a folding area between the adjacent non-folding areas, a hinge under the display module and configured to fold the display module with respect to the folding area, a supporter between the non-folding areas and the hinge, and a guide portion connected to the supporter and configured to be inserted into a guide groove defined in the hinge. A length in the first direction of the guide groove is obtained utilizing a length of an arc of the folding area when the display module is folded.