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:
Mar. 24, 2015
Filed:
Dec. 06, 2010
Yoshiro Yamashita, Yokohama, JP;
Hikaru Nakayama, Yokohama, JP;
Takashi Sugioka, Kurashiki, JP;
Kuraray Co., Ltd., Kurashiki-shi, JP;
Tokyo Institute of Technology, Tokyo, JP;
Abstract
A thienopyrazine compound which is useful for an organic semiconductor material. An organic field effect transistor, which includes an organic semiconductor layer that is easily produced from an organic semiconductor material containing the thienopyrazine compound by a coating method or a printing method, and which exhibits high carrier mobility and high on/off current ratio; and an organic field effect transistor which has ambipolar characteristics. The thienopyrazine compound is represented by chemical formula (I): wherein Arand Areach represents an aryl group, and Rand Reach independently represents a hydrogen atom, an alkyl group or an aryl group; or alternatively Rand Rrepresent a group having a ring formed by combining Rand Rtogether.