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:
Jan. 28, 1992
Filed:
Jun. 27, 1989
Shizuo Murata, Ichihara, JP;
Naoyoshi Emoto, Ichihara, JP;
Kenji Furukawa, Yokosuka, JP;
Kouichi Kunimune, Ichihara, JP;
Ryuji Kobayashi, Kawasaki, JP;
Masami Tanaka, Ichihara, JP;
Chisso Corporation, Osaka, JP;
Abstract
The present invention provides diamino compounds and liquid crystal aligning films comprising polyimides which are obtained from the said diamino compounds represented by the general formula: ##STR1## wherein R.sub.1 indicates an alkyl group having 3 to 22 carbon atoms, R.sub.2 indicates a hydrogen atom or an alkyl group having 1 to 22 carbon atoms, and R.sub.3 -R.sub.10 indicate a hydrogen atom or a methyl group, respectively. The liquid crystal aligning films are useful for STN mode display cells in realizing a high pretilt angle.