Liquid crystal display apparatus

Patent 5066110 Issued on November 19, 1991. Estimated Expiration Date:

December 22, 2009. 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

Solid-state device having a plurality of optical functions
Patent #: 4534622
Issued on: 08/13/1985
Inventor: Harada , et al.

Protective tab structure for use in the fabrication of matrix addressed thin film transistor liquid crystal displays
Patent #: 4778258
Issued on: 10/18/1988
Inventor: Parks , et al.

Display panel Patent #: 4943143
Issued on: 07/24/1990
Inventor: Yamashita

Inventors

Application

No. 454781 filed on 12/22/1989

US Classes:

349/146, Nonrectangular (odd) shaped pixels349/132, For parallel alignment349/138Insulating layer

Examiners

Primary: Wimer, Michael C.
Assistant: Ho, Tan

Attorney, Agent or Firm

Irell & Manella

Foreign Patent References

0136509 EP 04/20/1985
0098631 JP 08/20/1979
0094719 JP 06/20/1982
0188968 JP 08/20/1986
62-296123 JP. 12/20/1987
3101819 JP 05/20/1988

International Class

G02F 004/43

Foreign Application Priority Data

1988-12-26 JP

Abstract

A liquid crystal display apparatus comprising a pair of insulating substrates, a large number of picture element electrodes disposed into a matrix on the inner surface of one of the pair of substrates, a function element electrically connected to each of the picture element electrodes, and a liquid crystal layer charged between the pair of substrates, wherein the display apparatus further comprises on one of the substrate, an insulating protective film made of inorganic nitrides or inorganic oxides the insulating protective film being formed on the picture element electrode except for areas that constitute window regions, and an orientation film of a polyimide resin formed on the entire surface of the insulating protective film and window region, the orientation film has been rubbing-processed, whereby the occurrence of an internal polarization phenomenon can be prevented when a polyimide resin is used for the orientation film.