Patent Number: 7,088,145

Title: AC powered logic circuitry

Abstract: The use of an alternating current (ac) source to power logic circuitry can support satisfactory device performance for a variety of applications, while enhancing long-term stability of the circuitry. For example, when organic thin film transistor (OTFT)-based logic circuitry is powered by an ac power source, the logic circuitry exhibits stable performance characteristics over an extended period of operation. Enhanced stability may permit the use of OTFT logic circuitry to form a variety of circuit devices, including inverters, oscillators, logic gates, registers and the like. Such circuit devices may find application in a variety of applications, including integrated circuits, printed circuit boards, flat panel displays, smart cards, cell phones, and RFID tags. In some applications, the ac-powered logic circuitry may eliminate the need for ac-dc rectification components, thereby reducing the manufacturing time, expense, cost, complexity, and size of the component carrying the circuitry.

Inventors: Baude; Paul F. (Maplewood, MN), Haase; Michael A. (St. Paul, MN)

Assignee: 3M Innovative Properties Company

International Classification: H03K 19/20 (20060101); H03K 19/094 (20060101)

Expiration Date: 8/08/02018