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. 21, 2006
Filed:
Mar. 26, 2003
Yoshiaki Nakazaki, Yokohama, JP;
Yoshiaki Nakazaki, Yokohama, JP;
Kabushiki Kaisha Ekisho Sentan Gijutsu Kaihatsu Center, Yokohama, JP;
Abstract
There is provided an input-output (I/O) protective circuit having more stable I/O protective function for use in the liquid crystal display device. An IO protective circuit includes: a resistanceprovided between an I/O terminal padand an I/O primary stage thin film transistor, a wiring connecting the I/O terminal padwith the resistance, and two I/O protective thin film transistorsconnected in series between a ground terminaland a power source terminal. The above wiring is connected with each joint portion of the two I/O protective thin film transistorsand, each of the two I/O protective thin film transistorshas p-type substrate potential fixing terminalsand n-type substrate potential fixing terminals, which are connected with each of the channel layers of the I/O protective thin film transistors, and p-type substrate potential fixing terminalsand n-type substrate potential fixing terminalsare connected with the ground terminals