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:
Jul. 12, 1994
Filed:
May. 22, 1992
Sayuri Fujiwara, Nara, JP;
Akitsugu Hatano, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal display element of optical writing type is arranged to have a first transparent substrate, a first transparent electrode layer formed on the first substrate, a photoconductive layer formed on the electrode layer, a light absorbing layer formed on the photoconductive layer, a dielectric layer formed on the light absorbing layer, a second transparent substrate, a second transparent electrode layer formed on the second substrate, and a liquid crystal layer sealed between the second transparent electrode layer and the dielectric layer. The light absorbing layer is formed of a material having pigment dispersed in an organic material, so as to eliminate the necessity of patterning the light absorbing layer. The pigment may be a carbon black or an inorganic material in an acrylic resin, for example. The liquid crystal display element further includes a leveling layer formed on the light absorbing layer.