This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignees: Himax Technologies, Inc., National Sun Yat-Sen University of Kaohsiung. Active years: 2010.
Location History:
- Kaohsiung, TW (2010)
- Tainan County, TW (2010)
Company Filing History:
2 out of 1,092 
2 out of 283 Years Active: 2010
Title: Tie-Yan Chang: Innovator in Input Output Device Technology
Introduction
Tie-Yan Chang is a notable inventor based in Kaohsiung, Taiwan. He has made significant contributions to the field of electronics, particularly in the development of input-output devices. With a total of 2 patents, his work has advanced the technology used in mixed-voltage tolerant systems.
Latest Patents
One of Tie-Yan Chang's latest patents is an input-output device designed for mixed-voltage tolerance. This device is coupled between a core circuit and a pad, featuring an output cell, an input cell, and a pre-driver. The output cell includes an output stage and a voltage level converter. The output stage consists of a first transistor and a second transistor connected in series between a first supply voltage and a second voltage. The voltage level converter generates a first gate voltage to the first transistor based on the first voltage and a data signal. As the first supply voltage increases, the first gate voltage also rises. When the data signal is high, the first transistor is activated. The input cell comprises a pull unit and a first N-type transistor, while the pre-driver is responsible for turning off both the first and second transistors.
Another significant patent is the I/O buffer circuit. This output buffer circuit receives a control signal (OE) and a data signal (Dout) from a core circuit and operates in a transmitting mode based on the control signal. It converts the data signal into an output signal at either a first voltage level or a ground voltage level, depending on the logic level of the data signal and the supply voltage (VDDIO). The supply voltage can be adjusted to either pull up or pull down the first voltage level of the output signal.
Career Highlights
Tie-Yan Chang has worked at prominent institutions, including National Sun Yat-Sen University of Kaohsiung and Himax Technologies, Inc. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects in the field of electronics.
Collaborations
Throughout his career, Tie-Yan Chang has collaborated with notable colleagues such as Chua-Chin Wang and Tzung-Je Lee. These collaborations have further enriched his work and led to advancements in technology.
Conclusion
Tie-Yan Chang is a distinguished inventor whose contributions to input-output device technology have made