Organic light emitting diode and organic light emitting display apparatus including the same
By designing functional layers and electrode structures of specific thickness in organic light-emitting display devices, the problems of low light extraction efficiency and charge imbalance are solved, achieving efficient light extraction and extended life of the device.
CN112186010BActive Publication Date: 2025-10-17SAMSUNG DISPLAY CO LTD
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Patent Information
- Application Number
- CN202010634068.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-07-03
- Filing Date
- 2020-07-02
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2040-07-02
AI Technical Summary
Technical Problem
Organic light-emitting display devices have low light extraction efficiency, and the charge imbalance caused by the microcavity structure reduces the device lifespan.
Method used
A lower functional layer and upper functional layer structure with specific thickness is adopted to ensure that the distance between the pixel electrode and the relative electrode meets the optical resonance condition, and a microcavity structure is formed through the design of transparent and reflective electrodes to improve light extraction efficiency and balance charge transfer.
Benefits of technology
The light extraction efficiency of the organic light emitting display device is improved, and the life of the device is extended.
✦ Generated by Eureka AI based on patent content.
Abstract
Disclosed are an organic light emitting diode and an organic light emitting display apparatus including the same, and the organic light emitting display apparatus includes a first pixel electrode, a second pixel electrode, a third pixel electrode; a first lower functional layer, a second lower functional layer, and a third lower functional layer; a first organic emission layer for emitting light of a first color, a second organic emission layer for emitting light of a second color, and a third organic emission layer for emitting light of a third color; an opposite electrode; and a first upper functional layer, a second upper functional layer, and a third upper functional layer disposed between the opposite electrode and the first organic emission layer, the second organic emission layer, and the third organic emission layer, respectively, and each having a thickness equal to or greater than about 100 nm and less than or equal to about 200 nm.
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