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US 6,611,307 B2Granted
Liquid crystal display having two alignment domains, mask, and method thereof
AssigneeInternational Business Machines Corporation
InventorHiroki Nakano
Life of this patent
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Abstract
A liquid crystal display includes an alignment film having first alignment subdomains with a first alignment property and second alignment subdomains with a second alignment property different from the first one. In the alignment film, the first alignment subdomains and the second alignment subdomains are arranged in a matrix so that both of them are included in every line extending across the matrix.
Claims4
A method for producing a liquid crystal display having a pair of substrates facing each other and having aligenment films on their facing surfaces, comprising the steps of:
- preparing a first substrate and a second substrate each having, on one of its surfaces, a base film which later turns into an alignment film by alignment treatment;
- preparing a mask having a plurality of apertures for forming first alignment domains consisting of first alignment subdomains with a first property and a shielding portion for shielding a portion where a second alignment domain consisting of second alignment subdomains with a second property is to be formed,
- subjecting the base film of the first substrate to alignment treatment from a predetermined direction,
- placing the mask on the base film of the first substrate;
- subjecting the base film of the first substrate exposed through the apertures of the mask to alignment treatment from a direction perpendicular to the predetermined direction;
- subjecting the base film of the second substrate to alignment treatment from the predetermined direction;
- placing the mask upside down on the base film of the second substrate;
- and
- subjecting the base film of the second substrate to alignment treatment from the direction perpendicular to the predetermined direction.
6 more elements
Dependencies are inferred from the claim text.