Yet-Zen Liu is a notable inventor based in Roanoke, Virginia, who has made significant contributions to the field of light-emitting diodes (LEDs). With a total of five patents to his name, Liu's work focuses on enhancing the efficiency and performance of semiconductor structures.

Latest Patents

Liu's latest patents include a method of manufacturing a light-emitting diode by liquid phase epitaxy. This innovative approach involves creating a small-area light-emitting diode of the surface-emitting type, which features a double heterojunction semiconductor structure grown on a substrate. A semiconductor blocking layer with a hole is strategically placed between the substrate and the double heterojunction layers to confine transverse current flow, thereby increasing efficiency. Additionally, a metallic contact layer is formed on the opposite side of the substrate, incorporating a registering hole that aligns with the hole in the semiconductor blocking layer. This design aims to optimize light emission and current confinement, further enhancing the diode's performance.

Career Highlights

Liu is currently employed at the International Telephone and Telegraph Corporation, where he continues to innovate in the field of semiconductor technology. His work has garnered attention for its potential applications in various electronic devices.

Collaborations

Some of Liu's notable coworkers include Shang-Yi Chiang and James E Goell, who have collaborated with him on various projects related to semiconductor technology.

Conclusion

Yet-Zen Liu's contributions to the field of light-emitting diodes exemplify the impact of innovative thinking in technology. His patents reflect a commitment to improving efficiency and performance in semiconductor structures, paving the way for advancements in electronic devices.

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