18604744. LIGHT-EMITTING DEVICE, DISPLAY DEVICE, AND ELECTRONIC APPARATUS simplified abstract (SEIKO EPSON CORPORATION)
Contents
LIGHT-EMITTING DEVICE, DISPLAY DEVICE, AND ELECTRONIC APPARATUS
Organization Name
Inventor(s)
Yasuto Akatsuka of Chino-shi (JP)
LIGHT-EMITTING DEVICE, DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18604744 titled 'LIGHT-EMITTING DEVICE, DISPLAY DEVICE, AND ELECTRONIC APPARATUS
The patent application describes a light-emitting device with specific layers and properties to enhance light emission efficiency.
- First electrode
- Second electrode with light-transmitting property
- First semiconductor layer between the electrodes
- Second semiconductor layer between the first semiconductor layer and the second electrode
- Light-emitting layer between the semiconductor layers
- Light-transmitting portion on the side of the second electrode
- Second electrode with a lower refractive index than the second semiconductor layer and a higher refractive index than the light-transmitting portion
- Uneven structure on the surface of the second semiconductor layer in contact with the second electrode
Potential Applications: - LED lighting - Display technology - Optoelectronic devices
Problems Solved: - Enhanced light emission efficiency - Improved light transmission properties - Better overall device performance
Benefits: - Higher brightness output - Energy efficiency - Longer lifespan of the device
Commercial Applications: Title: "Advanced Light-Emitting Devices for Enhanced Illumination" This technology can be used in various commercial applications such as: - LED lighting for homes and commercial buildings - Display screens for TVs, smartphones, and other electronic devices - Signage and advertising displays
Questions about the technology: 1. How does the uneven structure on the surface of the second semiconductor layer improve light emission efficiency? 2. What are the specific advantages of using a light-transmitting portion on the second electrode for this device?
Original Abstract Submitted
A light-emitting device includes: a first electrode; a second electrode has a light-transmitting property; a first semiconductor layer that is provided between the first electrode and the second electrode; a second semiconductor layer that is provided between the first semiconductor layer and the second electrode and is in contact with the second electrode; a light-emitting layer that is provided between the first semiconductor layer and the second semiconductor layer; and a light-transmitting portion provided on a side of the second electrode opposite to the second semiconductor layer, wherein light generated in the light-emitting layer is emitted from side of the second electrode, a refractive index of the second electrode is lower than a refractive index of the second semiconductor layer and is higher than a refractive index of the light-transmitting portion, and a surface of the second semiconductor layer in contact with the second electrode has an uneven structure.
