Chwan Chao Chen

Title: Innovations of Chwan Chao Chen in Integrated Circuit Fabrication

Introduction: Chwan Chao Chen is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of integrated circuit technology. His innovative approach has led to the development of a unique patent that enhances the fabrication process of alignment marks on semiconductor devices.

Latest Patents: Chwan Chao Chen holds a patent titled "Nitride double etching for twin well align." This patent describes a method of fabricating alignment marks on an integrated circuit device. The process includes several steps, such as forming a first pad oxide layer and a first nitride layer on a P-type semiconductor substrate. It also involves coating and patterning a first photoresist layer by lithography, partially etching the first nitride layer to create a first nitride pattern, and ion implanting N-type ions to form an N-doped region. The method continues with the coating and patterning of a second photoresist layer, further etching to form a second nitride pattern, and ion implanting P-type ions to create a P-doped region. The final steps involve thermally driving in N-type and P-type impurities to form N-well and P-well regions, while simultaneously growing an oxide layer. The resulting height difference between the oxide layer and the second nitride pattern produces a ladder topography that serves as an alignment mark for subsequent lithographic processes. Chwan Chao Chen has 1 patent to his name.

Career Highlights: Chwan Chao Chen is currently employed at Holtek Microelectronics Inc., where he continues to innovate in the field of semiconductor technology. His work has been instrumental in advancing the methods used in integrated circuit fabrication.

Collaborations: Chwan Chao Chen collaborates with Chia Chen Liu, contributing to the development of innovative solutions in their field.

Conclusion: Chwan Chao Chen's contributions to integrated circuit technology through his patent demonstrate his expertise and commitment to innovation. His work continues to influence the semiconductor industry positively.