Len Mei

Title: Innovations of Len Mei in Non-Volatile Memory Technology

Introduction

Len Mei is a prominent inventor based in San Jose, CA, known for his significant contributions to the field of non-volatile memory devices. With a total of 4 patents to his name, he has made remarkable advancements that enhance the performance and efficiency of memory technologies.

Latest Patents

One of Len Mei's latest patents focuses on non-volatile memory devices with charge storage regions. This innovative memory device comprises a cell stack and a select gate positioned adjacent to the cell stack. The cell stack includes a tunneling dielectric layer, a charge storage layer, a blocking dielectric layer, and a control gate. By applying a positive bias to the control gate, the select gate, and the source of the device, negative charges are injected from a channel region of a substrate through hot electron injection. This process occurs at a location near the gap between the select gate and the control gate, allowing for the storage of negative charges in the charge storage layer. Conversely, applying a negative bias to the control gate enables the direct tunneling of positive charges from the channel region into the charge storage layer, facilitating the storage of positive charges.

Another notable patent by Len Mei involves nonvolatile memories with laterally recessed charge-trapping dielectrics. In this design, the charge-trapping dielectric is recessed from under the edge of the control gate and/or from the edge of a substrate isolation region. This recessed geometry effectively reduces or eliminates charge trapping in regions where charge may be challenging to erase, thereby improving the overall functionality of the memory cell.

Career Highlights

Len Mei is currently employed at Promos Technologies, Inc., where he continues to innovate and develop cutting-edge memory technologies. His work has significantly impacted the field, leading to advancements that enhance the reliability and efficiency of non-volatile memory devices.

Collaborations

Len Mei collaborates with talented professionals in his field, including his coworker Yue-Song He. Their combined expertise contributes to the ongoing development of innovative memory solutions.

Conclusion

Len Mei's contributions to non-volatile memory technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of memory systems and a commitment to advancing the field. Through his work at Promos Technologies, Inc., he continues to push the boundaries of what is possible in memory technology.