Title:
低出力表示装置
Document Type and Number:
Japanese Patent JP2004521391
Kind Code:
A
Abstract:
In known active matrix display devices, the column address conductors are charged using DC power. When each column is discharged, the energy held by the column is dissipated. According to the present invention, an active matrix display device is provided wherein its column driving circuitry comprises an input (48) for receiving AC power, and switching circuitry (80) for selectively connecting each of the column address conductors (52) of the display to the input (48) to charge and discharge the column address conductors using AC power. This enables charge to be recovered by the AC power source (12) from the column address conductors (52), thereby reducing the overall power consumption of the device.
Inventors:
Hunter Ein M
Application Number:
JP2003507795A
Publication Date:
July 15, 2004
Filing Date:
June 18, 2002
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G02F1/133; G09G3/20; G09G3/36; H01L51/50; (IPC1-7): G09G3/36; G02F1/133; G09G3/20; H05B33/14
Attorney, Agent or Firm:
Susumu Tsugaru
Akihiko Miyazaki
Hiroyoshi Aoki
Akihiko Miyazaki
Hiroyoshi Aoki