OLED Mirror Sealing via Integrated Reflection Member
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Solution Overview
Problem
Organic light emitting display apparatuses are prone to damage from external foreign materials like moisture and oxygen, and they lack functionality as a mirror when not emitting light.
Innovation Solution
Incorporating a reflection member, such as aluminum with a thickness of 250 Å or more, in non-light emitting regions of the display, which also serves as a sealing member to prevent external material penetration and function as a mirror by reflecting external light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the organic light emitting display apparatus is sealed to prevent penetration of foreign materials, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines the sealing member with the reflection member into a single integrated component. The sealing member is disposed along the edges of the substrate to seal the organic light emitting unit, while the reflection member is disposed on the non-light emitting region. This merging reduces the number of separate components and simplifies the overall device structure while maintaining both sealing and mirror functions.
Solution Approach 2:
The sealing member is designed to serve multiple functions: it seals the organic light emitting unit to prevent foreign material penetration, and simultaneously serves as part of the mirror structure when disposed along the edges. This multi-functionality reduces the need for separate dedicated sealing components, thereby reducing device complexity while improving reliability.
2Adaptability or versatility
If a reflection member is added to enable mirror function, then adaptability is improved, but device complexity increases
Solution Approach 1:
The non-light emitting region of the display apparatus is designed to serve dual purposes: it maintains its original function as a non-emissive area while simultaneously functioning as a mirror when the organic light emitting device does not generate light. This multi-functionality adds mirror capability without requiring completely separate additional components.
Solution Approach 2:
The reflection member is selectively disposed only on the non-light emitting region, not across the entire display area. This localized approach allows the mirror function to be achieved in specific areas where it is needed, while preserving the light emitting functionality in other regions, thereby minimizing the impact on overall device complexity.
3Illumination intensity
If the reflection member is formed with sufficient thickness to reflect light effectively, then mirror functionality is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a thickness parameter for the reflection member (250 Å or more) that balances light reflection effectiveness with manufacturing feasibility. This parameter optimization ensures sufficient mirror functionality while remaining within achievable manufacturing precision limits for thin film deposition processes.
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 effectively seals the organic light emitting unit, preventing damage and allowing the display to function both as a display apparatus and a mirror by ensuring light is not emitted towards the reflection member, thus enhancing durability and dual functionality.
Implementation Method 1
The reflection member may be formed of a material that reflects light proceeding towards the reflection member from outside of the organic light emitting display apparatus
Implementation Method 2
generate light by re-combination of electrons and holes in a light emitting layer when a voltage is applied to an organic film
Data Source
AI summary
An organic light emitting display apparatus that includes a substrate, an organic light emitting unit formed on the substrate, a reflection member disposed on a non-light emitting region of the organic light emitting unit, and a sealing member that seals the organic light emitting unit. The organic light emitting display apparatus can function as a display apparatus or a mirror.