Larry D Angell

Title: Innovations by Larry D Angell

Introduction

Larry D Angell is a notable inventor based in Boise, ID (US). He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work focuses on improving the efficiency and effectiveness of semiconductor device testing.

Latest Patents

One of his latest patents is titled "Wafer for cleaning semiconductor device probe." This invention presents a system and method for cleaning probe pins on a probe card used in testing semiconductor devices during fabrication. The innovative approach utilizes a ceramic cleaning wafer that allows for the cleaning of probe pins without the need to remove the probe card from the production line. The same apparatus that tests production wafers also manages the cleaning wafer during a probe cleaning cycle.

During the cleaning cycle, the cleaning wafer is placed in a manual load tray, which inserts it into a prober machine. A robotic trolley transports the cleaning wafer to a prealign stage area where it is aligned and centered. The cleaning wafer is then positioned on a support device, which is profiled under a pneumatic sensor to determine wafer planarity. The support device and cleaning wafer are subsequently positioned beneath the probe pins on the probe card to be cleaned. The z-axis distance between the probe pins and the cleaning wafer surface is decreased, allowing the probe pins to contact the cleaning wafer and remove debris. Once the cleaning is complete, the cleaning wafer is removed from the support device.

Career Highlights

Larry D Angell is currently employed at Micron Technology Incorporated, a leading company in semiconductor manufacturing. His work at Micron has allowed him to develop and refine his innovative cleaning methods, contributing to the efficiency of semiconductor production.

Collaborations

One of his notable coworkers is Andrew J Krivy, with whom he has collaborated on various projects within the semiconductor field.

Conclusion

Larry D Angell's contributions to semiconductor technology through his innovative patents demonstrate his commitment to enhancing production processes. His work continues to impact the industry positively, showcasing the importance of innovation in technology.