Pei-Pei Tzuoo

Title: Pei-Pei Tzuoo: Innovator in Semiconductor Technology

Introduction

Pei-Pei Tzuoo is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of semiconductor technology. His innovative work has led to the development of a unique method for forming high-density multi-state mask ROM cells.

Latest Patents

Pei-Pei Tzuoo holds a patent for a method of forming multi-state mask ROM cells on a semiconductor substrate. This patent outlines a comprehensive process that includes several steps. Firstly, a pad oxide layer is formed on a semiconductor substrate. Then, the pad oxide layer is patterned to create multiple first coding oxide regions. Following this, a photoresist pattern is established to define buried bit line regions. A first ion implant is conducted by implanting n-type impurities into the semiconductor substrate using the photoresist pattern as a mask. After stripping the photoresist pattern, a first thermal oxidation is performed to grow an oxide layer and drive the n-type impurities into the substrate. Three types of oxide layers are formed with varying thicknesses. Subsequently, a conductive layer is created and patterned as word lines. A photoresist pattern is then formed to define a second coding region, with openings located at regions having either first coding oxide regions or the thinnest type oxide layer. Finally, an ion implant using boron ions is performed, resulting in the formation of a four-state mask ROM.

Career Highlights

Pei-Pei Tzuoo is currently employed at King Billion Electronics Co., Ltd. His work at this company has been instrumental in advancing semiconductor technologies. He has demonstrated a strong commitment to innovation and excellence in his field.

Collaborations

Pei-Pei Tzuoo collaborates with Chih-Wen Lee, who is also a key contributor in their projects. Their partnership has fostered a productive environment for innovation and development.

Conclusion

Pei-Pei Tzuoo's contributions to semiconductor technology, particularly through his patent on multi-state mask ROM cells, highlight his role as an influential inventor. His work continues to impact the industry positively.