Modified Distributed Bragg Reflectors for Color Stability in InGaN Red Micro-LEDs
Wen-Chien Miao1,2, Yu-Heng Hong1, Fu-He Hsiao1,2
1Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, Taiwan.
Nanomaterials (Basel, Switzerland)
|February 25, 2023
Summary
Modified distributed Bragg reflectors (DBRs) improve the color stability of Indium Gallium Nitride (InGaN) red micro-light-emitting diodes (micro-LEDs). This advancement is crucial for developing vibrant, full-color micro-LED displays.
Area of Science:
- Optoelectronics
- Materials Science
- Display Technology
Background:
- Monolithic integration of Indium Gallium Nitride (InGaN) micro-light-emitting diodes (micro-LEDs) is key for full-color micro-displays.
- Color stability in InGaN red micro-LEDs remains a significant challenge.
Purpose of the Study:
- To design modified distributed Bragg reflectors (DBRs) to enhance color stability in InGaN red micro-LEDs.
- To quantitatively assess the impact of modified DBRs on color performance.
Main Methods:
- Designed modified DBRs to minimize unwanted spectral transmission.
- Analyzed optical properties of InGaN red micro-LEDs with conventional and modified DBRs.
- Utilized CIE 1931 color space and 8-bit RGB values for color stability assessment.
Main Results:
- Modified DBRs effectively reduced the transmission of undesired spectra.
- Calculated optical properties demonstrated improved color performance with modified DBRs.
- Quantitative assessment confirmed reduced color shift.
Conclusions:
- Modified DBRs significantly enhance color stability in InGaN red micro-LEDs.
- This approach offers a viable solution for developing stable full-color InGaN-based micro-LED displays.
