US 5,691,792 A · Method for producing a liquid crystal display apparatus by irradiating an aligning film with light to reduce pretilt angles of liquid crystal molecules thereof

Abstract

A liquid crystal display apparatus having a pair of substrates with a liquid crystal layer interposed therebetween is disclosed. Also, a method for producing the same and a substrate are disclosed. In the liquid crystal display apparatus, an aligning film is formed on at least one of the pair of substrates, the surface of the aligning film is made rough for controlling pretilt angles of liquid crystal molecules in the liquid crystal layer which are in contact with the surface of the aligning film, and the degrees of roughness are different among a plurality of prescribed regions.

Claims14

Dependent claims

A method for producing a liquid crystal display apparatus having a pair of substrates with a liquid crystal layer interposed therebetween and having picture elements disposed in a matrix, the method comprising the steps of:

forming a film to be an aligning film for controlling the alignment of liquid crystal molecules in the liquid crystal layer, on at least one of the pair of substrates;
and
irradiating the film with light to reduce the pretilt angles of liquid crystal molecules, and providing an aligning property to the film.

Dependencies are inferred from the claim text.

Facts

Application

08/449,115Filed 24 May 1995 · division

Priority

JP 5-1417729 Jan 1993

Granted

25 Nov 1997

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

G02F 1/133788
By treatment of the surface, e.g. embossing, rubbing or light irradiation: by light irradiation, e.g. linearly polarised light photo-polymerisation
G02F 1/133757
With different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle: with different alignment…
G02F 1/133761
With different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle: with different pretilt…
G02F
Optical devices or arrangements for the control of light by modification of

Method for producing a liquid crystal display apparatus by irradiating an aligning film with light to reduce pretilt angles of liquid crystal molecules thereof

Life of this patent

Method for producing a liquid crystal display apparatus by irradiating an aligning film with light to reduce pretilt angles of liquid crystal molecules thereof

Life of this patent

Abstract

Claims14