Micro-LED with red-green-blue super-pixel integration for simultaneous display and optical near field communication

Area of Science:

• Optoelectronics
• Display Technology
• Semiconductor Devices

Background:

• Micro-LED displays offer high brightness and efficiency.
• Integrating multiple colors into a single pixel is challenging.
• Existing multi-color LEDs have limitations in bandwidth and data rate.

Purpose of the Study:

• To develop a novel all-in-one Micro-LED pixel (µLEDP) technology.
• To integrate red-green-blue super-pixels (RGBSP) into a single unit cell.
• To evaluate the optical and electrical performance of the integrated µLEDP.

Main Methods:

• Fabrication of an all-in-one µLEDP integrating RGBSP.
• Optical and electrical characterization of the µLEDP.
• Performance comparison with existing multi-color LED technologies.

Main Results:

• The µLEDP demonstrated a wide color gamut (109% NTSC).
• A broad correlated color temperature range (2831.7–10016.8 K) was achieved.
• High modulation system bandwidth (58–62 MHz) and data rates (0.3 Gb/s NRZ, 1.1 Gb/s PAM-4) were obtained.

Conclusions:

• The integrated µLEDP offers excellent optical and electrical performance.
• This technology achieves the highest data rate among comparable multi-color LEDs.
• The developed µLEDP is suitable for high-speed optical communication applications.