U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Liquid crystal display device having interlaced driving circuits for driving rows and columns one-half cycle out of phase

Patent 4842371 Issued on June 27, 1989. Estimated Expiration Date: Icon_subject April 14, 2008. 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.

Patent References

Method for driving an X-Y matrix type liquid crystal display panel
Patent #: 4158860
Issued on: 06/19/1979
Inventor: Irie ,   et al.

Liquid crystal matrix display device
Patent #: 4485380
Issued on: 11/27/1984
Inventor: Soneda ,   et al.

Information conversion device with auxiliary address lines for enhancing manufacturing yield
Patent #: 4688896
Issued on: 08/25/1987
Inventor: Castleberry

Method and circuits for driving a liquid crystal display device
Patent #: 4701026
Issued on: 10/20/1987
Inventor: Yazaki ,   et al.

Liquid crystal display device
Patent #: 4702560
Issued on: 10/27/1987
Inventor: Endo ,   et al.

Ferroelectric display panel and driving method therefor to achieve gray scale
Patent #: 4709995
Issued on: 12/01/1987
Inventor: Kuribayashi ,   et al.

Multiplexed driving method for an optical switching element employing ferroelectric liquid crystal
Patent #: 4746196
Issued on: 05/24/1988
Inventor: Umeda ,   et al.

Driving circuit for liquid crystal display device Patent #: 4746197
Issued on: 05/24/1988
Inventor: Endo ,   et al.

Inventors

Application

No. 07/181377 filed on 04/14/1988

US Classes:

345/96, Field period polarity reversal345/103Grouped electrodes (e.g., matrix partitioned into sections)

Examiners

Primary: Miller, Stanley D.
Assistant: Gallivan, Richard F.

Attorney, Agent or Firm

International Class

G09G 3/36 (20060101)

Foreign Application Priority Data

1987-04-15 JP

Abstract

An active matrix liquid crystal display device operable on an interlaced scanning scheme and having a plurality of liquid crystal cells and switching active elements for driving the liquid crystal cells. The liquid crystal cells and the switching active elements are arranged in a matrix fashion having rows and columns intersecting with each other. The display device comprises a plurality of sets of rows, each set being comprised of neighboring members of the rows of the matrix; a scanning unit for scanning each set with an interlaced scanning signal during any field, odd-numbered source lines each connected with one of the row forming the respective set, even-numbered source lines each connected with the other of the row forming the respective set; and a signal applying unit for applying an odd-numbered field signal to the odd-numbered source line during any field time and for applying an even-numbered field signal to the even-numbered source line during any field time.

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