Vertically Integrated GaN LEDs Proposed to Advance Micro LED Display

Researchers at Rochester Institute of Technology in the U.S. proposed a new designed vertical integration of GaN LED which enables improved efficiency of Micro LED displays.

Matthew Hartensveld and Jing Zhang from Rochester Institute of Technology published a new study on IEEE Electron Device Letter describing how they managed to vertically integrated nanowire GaN field-effect transistors (FETs) and InGaN LEDs. The novel structure places the transistor below the LED which for controlling and dimming.


(Image: Hartensveld and Zhang)

Combining the transistor and LED, the researchers created a compact structure with easier fabrication that is more cost effective to improve the development of Micro LED displays. According to the study, the new structure allows more LEDs to be placed in an area, leading to higher pixel densities and resolution.

The new design is thus helpful in the development of Micro LED display with the reduced pixel size and advanced densities.

Currently the limitation of the vertical design is that it requires a negative voltage to turn the LEDs off but the researchers are working on the improvement.

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.
Display devices have been used for many years as a means of HMI (Human Machine Interface) to connect humans and machines interactively, and their usage are still expanding. Automotive interiors are no exception to this trend, with an increasing ... READ MORE
About LiDAR Automotive industry trends In recent years, many vehicles have been launched with ADAS (Advanced Driver Assistance Systems) as standard equipment. As the future evolves towards more automated driving, sensing around the vehicle i... READ MORE