This inventor holds 7 USPTO granted patents. Top assignee: 3M Innovative Properties Company. Active years: 1994-2007.
Location History:
- Farmington, MN (US) (1994 - 1997)
- Saint Paul, MN (US) (2000)
- Shoreview, MN (US) (2007)
Company Filing History:
Years Active: 1994-2007
Title: David J Aastuen: Innovator in Liquid Crystal Technology
Introduction
David J Aastuen is a notable inventor based in Farmington, MN (US). He has made significant contributions to the field of liquid crystal technology, holding a total of 7 patents. His work focuses on enhancing the functionality and performance of liquid crystal displays (LCDs).
Latest Patents
Among his latest patents is a liquid crystal device featuring a pressure relief structure. This innovative design includes an active area for displaying information and an adjacent inactive area that contains a pressure relief region. This region is crucial for alleviating pressure generated within the cell, which minimizes the effects of pressure variations in the active area. The display consists of two substrates, at least one of which is flexible, joined at their peripheries. Spacer members are strategically placed between the substrates to ensure a uniform gap in the active area. The pressure relief region allows for flexure of the flexible substrate, effectively eliminating distortions caused by temperature changes.
Another significant patent involves an optical panel capable of switching between reflective and transmissive states. This device comprises a switchable optical panel and mechanisms for toggling between reflecting and transmitting states. The panel includes a transparent optically active layer with reflective polarizers on both major surfaces. The invention also encompasses a switchable window and a transflective optical display, showcasing Aastuen's versatility in liquid crystal applications.
Career Highlights
David J Aastuen has dedicated his career to advancing liquid crystal technology. He is currently employed at Minnesota Mining and Manufacturing Company, where he continues to innovate and develop new technologies that enhance display systems.
Collaborations
Throughout his career, Aastuen has collaborated with notable colleagues, including Timothy L Hoopman and Michael F Weber. These partnerships have contributed to the successful development of his patented technologies.
Conclusion
David J Aastuen is a prominent figure in the field of liquid crystal technology, with a focus on improving display systems through innovative designs. His contributions have significantly impacted the industry, and his patents reflect his commitment to advancing technology.