The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 1998
Filed:
Jul. 14, 1997
Sony Corporation, Tokyo, JP;
Abstract
A reflective guest-host liquid-crystal display of the present invention includes a pair of substrates joined together at a predetermined distance therebetween. One of the substrates is positioned at an incident side and the other is positioned at a reflection side. A guest-host liquid-crystal layer, a reflective layer, and a .lambda./4 phase shifter are provided within a space formed between the pair of substrates. The guest-host liquid-crystal layer positioned adjacent to the incident-side substrate contains a dichroic dye. The .lambda./4 phase shifter is provided between the guest-host liquid-crystal layer and the reflective layer and is located adjacent to the reflection-side substrate. A counter electrode and pixel electrodes are formed on the incident-side substrate and the reflection-side substrate, respectively, so as to apply a voltage to the guest-host liquid-crystal layer. The .lambda./4 phase shifter is composed of a uniaxially aligned side-chain type liquid-crystal polymer having at least a biphenyl benzoate group introduced into a side chain, and thereby exhibits improved solvent resistance.