Chiun-chi Shen

Title: Chiun-chi Shen: Semiconductor Circuit and Memory Innovations

Introduction

Chiun-chi Shen is an inventor associated with Hsinchu, Taiwan. His patent work includes innovations in integrated-circuit timing and semiconductor memory architecture. He has 3 patents and is associated with Vanguard International Semiconductor Corporation.

Latest Patents

One of Shen’s patents describes an RC delay circuit for integrated circuits that can delay rising and falling signal transitions independently. The circuit uses an RC network, a Schmitt trigger, and an inverter. Two MOS transistors configured as capacitors help control the delay for each transition separately, allowing the timing to be adjusted by changing the dimensions of the corresponding transistor. Feedback from the output also helps hasten the Schmitt trigger’s switching.

Another patent describes semiconductor memory with a column decoder designed to support redundant memory arrays. A fuse can permanently deselect a failing array and select a redundant one. The architecture combines memory arrays, decoders, sense amplifiers, and outputs into a module, and uses replicated array structures and combined data outputs to build larger systems.

Career Highlights

Shen’s disclosed inventions address practical semiconductor design challenges: independently controlling signal-transition timing and maintaining memory operation when an array column fails. These approaches reflect a focus on circuit behavior, memory organization, and reliability.

Collaborations

Shen’s listed coworkers include Howard Clayton Kirsch and Jiang-Hong Ho. His company affiliation is Vanguard International Semiconductor Corporation.

Conclusion

Chiun-chi Shen’s patent portfolio highlights contributions to integrated-circuit delay control and redundant semiconductor memory, with an emphasis on flexible timing and dependable memory operation.