Company Filing History:
Years Active: 1999-2001
Title: Innovations by Yin-Shang Liu
Introduction
Yin-Shang Liu is a notable inventor based in Tsao-Twen, Taiwan. He has made significant contributions to the field of memory technology, holding a total of 6 patents. His work focuses on enhancing the performance and efficiency of memory devices.
Latest Patents
One of his latest patents is a memory cell sense amplifier. This invention describes a sensing circuit designed to minimize read times by including a first circuit branch corresponding to an array circuit path and a second circuit branch corresponding to a reference cell circuit path. During the pre-decode interval, additional load and current generation circuitry are enabled in the first circuit path. This allows the voltage seen by the sensing input of a sensing circuit comparator to be driven to be essentially equivalent to that of the reference signal established by the reference cell circuit path. Once the address has been decoded, the additional load circuitry is disabled, allowing the sensing input of the comparator to transition to a voltage representative of the logic state stored in the memory cell.
Another significant patent is for parallel read and verify for floating gate memory devices. This invention includes a page mode flash memory or floating gate memory device, featuring a page buffer based on low current bit latches. It also provides capabilities for parallel read and parallel program verify operations. The device includes bit latch circuitry that facilitates these parallel operations while avoiding data conflicts. Circuitry for separate read signals can isolate the operations, and a diode-type device can be used to indicate when a cell does not need to be programmed.
Career Highlights
Yin-Shang Liu works at Macronix International Co., Ltd., a company known for its advancements in memory technology. His innovative contributions have played a crucial role in the development of efficient memory solutions.
Collaborations
He collaborates with talented coworkers, including Chun-Hsiung Hung and Kuen-Long Chang, who contribute to the innovative environment at Macronix International Co., Ltd.
Conclusion
Yin-Shang Liu's work in memory technology exemplifies the impact of innovation in enhancing device performance. His patents reflect a commitment to advancing the field and improving the efficiency of memory devices.