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:
Sep. 21, 2010
Filed:
May. 09, 2007
Chuan-ter Yan, Kaohsiung, TW;
Chih-hsiung Huang, Kaohsiung, TW;
Chao-ching Huang, Kaohsiung, TW;
Chin-wang Kao, Kaohsiung Hsien, TW;
Tin-hun Hung, Kaohsiung, TW;
Chuan-Ter Yan, Kaohsiung, TW;
Chih-Hsiung Huang, Kaohsiung, TW;
Chao-Ching Huang, Kaohsiung, TW;
Chin-Wang Kao, Kaohsiung Hsien, TW;
Tin-Hun Hung, Kaohsiung, TW;
Daily Polymer Co., Ltd., Kaohsiung Hsien, TW;
Abstract
A diamine includes a structure of formula (I), wherein X and Y are independently a divalence group selected from the group consisting of: —O—, —(C═O)—O—, —O—(C═O)—, —(C═O)—NH—, and —NH—(C═O)—; and R has a structure of formula (II): wherein R, R, R, R, R, m, and n are as defined in Claim. A polyamic acid is prepared by reacting a diamine reactant including the aforesaid diamine of formula (I) with a tetracarboxylic dianhydride reactant. A liquid crystal orienting film contains a polyimide converted from the aforesaid polyamic acid.
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