Location History:
- New Taipei, TW (2015 - 2016)
- Taipei, TW (2016)
Company Filing History:
Years Active: 2015-2016
Title: Innovations by Chih-Shen Chang in 3D NAND Flash Technology
Introduction
Chih-Shen Chang is a prominent inventor based in Taipei, Taiwan. He has made significant contributions to the field of memory technology, particularly in 3D NAND flash memory. With a total of 4 patents, his work focuses on improving the performance and reliability of memory systems.
Latest Patents
One of his latest patents is titled "Systems and methods for reduced program disturb for 3D NAND flash." This invention addresses common issues encountered when programming 3D NAND flash memory, such as the back-pattern effect and pattern-induced program disturb. By employing improved programming techniques, these problems can be substantially reduced, leading to increased precision in setting memory cells' threshold voltages. The techniques combine aspects of 'by-word-line' programming and 'by-page' programming, allowing for simultaneous programming of memory cells on multiple pages.
Another notable patent is "Systems and methods for trimming control transistors for 3D NAND flash." This invention focuses on the fabrication of control transistors and memory cells within 3D NAND flash memory arrays. By utilizing the same technology, such as charge trapping structures, the fabrication process is simplified. However, the resulting control transistors may exhibit higher variability in threshold voltages compared to traditional gate-oxide-based control transistors. The patent provides exemplary techniques to trim these control transistors, enhancing reliability and performance during array operation.
Career Highlights
Chih-Shen Chang is currently associated with Macronix International Co., Ltd., a leading company in the semiconductor industry. His work has significantly impacted the development of advanced memory technologies, making him a key figure in this field.
Collaborations
Chih-Shen has collaborated with notable colleagues, including Kuo-Pin Chang and Wen-Wei Yeh. Their combined expertise has contributed to the advancement of innovative solutions in memory technology.
Conclusion
Chih-Shen Chang's contributions to 3D NAND flash technology demonstrate his commitment to innovation and excellence in the field of memory systems. His patents reflect a deep understanding of the challenges in memory programming and fabrication, paving the way for future advancements.