Cover Window Receiving Recess for Slim OLED Side-Impact Protection
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Solution Overview
Problem
Organic light emitting display devices are vulnerable to side impacts due to the lack of protective features and have limited thickness reduction due to the thickness of the cover window.
Innovation Solution
Incorporating a protective layer and a sealing part between the display panel assembly and the cover window, with the cover window featuring a receiving recess that reduces thickness and provides side-impact protection, and an adhesive layer to secure the display panel assembly in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the thickness of the organic light emitting display device is reduced to achieve a slim design, then the device becomes more compact and aesthetically appealing, but the device becomes vulnerable to side impacts due to the absence of protective features
Solution Approach 1:
The protective layer is nested within the cover window structure by forming a receiving recess that accommodates the protective layer. This allows the protective feature to be integrated into the existing device architecture without significantly increasing the overall thickness, thus resolving the contradiction between achieving a slim design and providing side-impact protection.
Solution Approach 2:
Instead of adding protection only in the vertical dimension (which would increase thickness), the invention utilizes the horizontal dimension by creating a receiving recess with inclined side surfaces. This allows the protective layer to extend laterally to provide side-impact resistance while maintaining a compact vertical profile.
2Reliability
If protective features are added to protect the display panel assembly from side impacts, then side-impact resistance is improved, but the thickness of the device increases
Solution Approach 1:
The protective layer is positioned locally at the rear surface of the display panel assembly where side impacts are most likely to occur. The receiving recess is formed only in the necessary areas to accommodate the protective layer, providing protection exactly where needed without unnecessarily increasing the thickness of the entire device.
Solution Approach 2:
The protective layer is implemented as a thin film or layer that can be accommodated within the receiving recess. This thin-film approach provides side-impact protection while minimizing the increase in device thickness, as the protective feature is implemented in a space-efficient manner.
3Reliability
If a protective layer and sealing part are added within the cover window, then side-impact resistance is improved, but the device complexity increases
Solution Approach 1:
The protective layer, adhesive layer, and sealing part are merged into a single integrated structure within the cover window. The receiving recess accommodates all these components together, forming a unified assembly that provides side-impact protection while minimizing the number of separate manufacturing steps and assembly operations required.
Solution Approach 2:
The cover window structure is designed to serve multiple functions: it provides the front protective surface of the device, contains the receiving recess for the protective layer, and incorporates the sealing part for environmental protection. This multi-functional design avoids the need for separate components for each function, thereby reducing overall device complexity.
Data Source
AI summary
An organic light emitting display device includes: a cover window having a receiving recess, the receiving recess having a bottom surface and a side surface inclined with respect to the bottom surface; a display panel assembly in the receiving recess; an adhesive layer between the bottom surface and the display panel assembly and coupling the bottom surface to the display panel assembly; and a sealing part between the side surface and the display panel assembly to couple the side surface and the display panel assembly.