Display driver having a low power mode

Patent 5859625 Issued on January 12, 1999. Estimated Expiration Date:

January 13, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Electronic device
Patent #: 5394166
Issued on: 02/28/1995
Inventor: Shimada

Power down mode for computer system
Patent #: 5757365
Issued on: 05/26/1998
Inventor: Ho

Liquid crystal display and turn-off method therefor Patent #: 5805121
Issued on: 09/08/1998
Inventor: Burgan, et al.

Inventors

Assignee

Motorola, Inc.

Application

No. 783837 filed on 01/13/1997

US Classes:

345/95, Three or more voltages345/210Having three or more voltage levels

Examiners

Primary: Brier, Jeffery

Attorney, Agent or Firm

Lamb; James A.

International Class

G09G 003/36

Abstract

A display driver circuit (100) includes N scanning drivers (150) for driving a scanning set of display electrodes of a display panel (160) with a set of scanning signals (155), P information drivers (130) for driving an information set of display electrodes of the display panel (160) with a set of information signals (135), and a control section (120) having a first mode and a second mode. In the first mode the control section (120) controls the N scanning drivers (150) to generate N different scanning signals (155). In the second mode the control section controls the N scanning drivers (150) to generate a common scanning signal by S of the scanning drivers (156) and N-S different scanning signals by N-S drivers of the scanning drivers (157), wherein N, P and S are positive integers.