Patent · US Active

Passive multiplexing extension for electronic paper displays

US8681416B2 · kind B2 · utility

3Cited by
4References
11Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 4, 2011
Grant dateMar 25, 2014
Priority date—
Expiry dateMay 7, 2032

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG09G2380/02
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A single-segment drive scheme for an electronic paper display (EPD) is replaced by a multiplexed drive scheme that reduces the number of driver pins to the number of display segments per digit or alphanumeric character plus one input/output (I/O) line per digit or alphanumeric character. In accordance with the invention, a passive digit selection mechanism enables a multiplex display drive scheme when the EPD material used typically has a stable threshold combined with a small hysteresis. Typically, display operation is better the smaller the hysteresis and the more stable the threshold of the EPD material that is used.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.