Wei-Chih Chang

Title: **The Innovative Journey of Wei-Chih Chang**

Introduction

Wei-Chih Chang, based in Kaohsiung, Taiwan, is an accomplished inventor with a notable portfolio of three patents. His work primarily revolves around advancements in mixed-voltage input/output (I/O) buffer technology, which plays a crucial role in the fields of electronics and circuit design. This article highlights his latest patents, career achievements, and collaborations with esteemed professionals.

Latest Patents

Wei-Chih Chang's most recent innovations include two patents for mixed-voltage I/O buffers. The first patent presents a mixed-voltage I/O buffer that incorporates an input buffer circuit featuring essential components like a first inverter, voltage level limiting circuit, pull-up circuit, input stage circuit, and a logic calibration circuit. This design ensures the protection of the first inverter from electrical overstress by limiting voltage levels of external signals.

The second patent details an output buffer circuit in a mixed-voltage I/O buffer. This apparatus comprises an output stage circuit that includes stacked pull-up and pull-down transistors, complemented by a gate-tracking circuit and a floating N-well circuit. The innovative design prevents leakage current by controlling the gate voltage in accordance with the I/O pad voltage, enhancing overall performance and reliability.

Career Highlights

Wei-Chih Chang has established a solid career in the technology sector, working with prominent entities such as Himax Technologies, Inc. and National Sun Yat-sen University. His contributions to these organizations underline his commitment to advancing technology through innovative solutions.

Collaborations

Throughout his career, Wei-Chih has collaborated with talented individuals such as Chua-Chin Wang and Tzung-Je Lee. These partnerships have fostered a creative environment that has led to the development of impactful technological advancements and patents.

Conclusion

Wei-Chih Chang's work exemplifies the spirit of innovation in electronics and circuit design. With three patents under his name, his latest contributions to mixed-voltage I/O buffer technology not only showcase his inventiveness but also emphasize his role as a key player in the field. His collaborations and career experiences reflect a strong foundation that will undoubtedly lead to further advancements in technology.