Light-emitting devices
A novel light-emitting device configuration with controlled carrier balance using specific materials and energy level ranges addresses efficiency, reliability, and longevity issues, achieving improved luminescence efficiency and reduced power consumption.
JP2026116372APending Publication Date: 2026-07-09SEMICON ENERGY LAB CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SEMICON ENERGY LAB CO LTD
- Filing Date
- 2026-04-24
- Publication Date
- 2026-07-09
Smart Images
Figure 2026116372000001_ABST
Abstract
We provide long-life light-emitting devices. [Solution] In a light-emitting device having an EL layer between a pair of electrodes, the holes in the EL layer By using a specific configuration for the injection layer and electron transport layer, the carrier balance during operation is This system controls the device to change spontaneously, thereby suppressing the initial degradation of the light-emitting device. At this time, the electron injection barrier at the laminated interface between the light-emitting layer and the electron transport layer of the EL layer is increased. As a result, the rate of its spontaneous change is slowed, making it an excellent luminescence device from the perspective of long-term degradation. It can be achieved.
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