Chien-Chih Du

Title: Innovations of Chien-Chih Du in Flash Memory Technology.

Introduction

Chien-Chih Du is a prominent inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of semiconductor technology, particularly in the development of flash memory cells. With a total of seven patents to his name, Du's work has had a substantial impact on the industry.

Latest Patents

One of Du's latest patents is focused on a flash memory cell and its manufacturing method. This innovative flash memory cell includes a p-type substrate, an n-type deep well, a stacked gate structure, a source region, a drain region, a p-type pocket doped region, spacers, a p-type doped region, and a contact plug. The n-type deep well is established within the p-type substrate, while the stacked gate structure is positioned over the p-type substrate. The structure further comprises a tunneling oxide layer, a floating gate, an inter-gate dielectric layer, a control gate, and a cap layer, all sequentially formed over the substrate. The source and drain regions are strategically placed on either side of the stacked gate structure, enhancing the functionality of the memory cell.

Another significant patent involves a method of fabricating a flash memory cell. This process includes forming a tunnel oxide layer, a floating gate layer, and a dielectric layer on a substrate. A control gate layer is then created on the dielectric layer and etched to form two control gates. The control gates undergo oxidation to develop multiple second oxide layers on their surfaces. The dielectric and floating gate layers are etched using these second oxide layers as a mask, resulting in a floating gate beneath each control gate. This innovative method culminates in the formation of a source between the floating gates, further optimizing the memory cell's performance.

Career Highlights

Chien-Chih Du is currently associated with Powerchip Semiconductor Corporation, where he continues to advance his research and development efforts in semiconductor technology. His expertise in flash memory design and fabrication has positioned him as a key player in the industry.

Collaborations

Du has collaborated with notable colleagues, including Da Sung and Leo Wang, contributing to various projects that enhance the capabilities of flash memory technology.

Conclusion

Chien-Chih Du's innovative work in flash memory technology has led to significant advancements in the field. His patents reflect a deep understanding of semiconductor design and fabrication