Low voltage driver scheme for interferometric modulators

US8736590B2 · kind B2 · utility

Assignee

• QUALCOMM MEMS Technologies, Inc. · US

Inventors

• Alan G. Lewis · Sunnyvale, US
• Marc Mignard · San Jose, US
• Clarence Chui · San Jose, US
• Wilhelmus Johannes Robertus Van Lier · San Diego, US
• Mark M. Todorovich · San Diego, US
• William J. Cummings · Millbrae, US

Key dates

• Filing date: Jan 20, 2010
• Grant date: May 27, 2014
• Expiry date: Oct 4, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G09G2330/021
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A method of driving electromechanical devices such as interferometric modulators includes applying a voltage along a common line to release the electromechanical devices along the common line, followed by applying an address voltage along the common line to actuate selected electromechanical devices along the common line based on voltages applied along segment lines. Hold voltages may be applied along common lines between applications of release and address voltages, and the segment voltages may be selected to be sufficiently small that the segment voltages will not affect the state of the electromechanical devices along other common lines not being written to.