Patent · US Expired

Display device

US6509690B2 · kind B2 · utility

9Cited by
9References
7Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 2, 2001
Grant dateJan 21, 2003
Priority date
Expiry dateMay 2, 2021

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG09G2330/021
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

Grey scale linearity and power efficiency in active matrix (O) LEDs are enhanced by operating the display in a switched mode.

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