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:
Jun. 23, 2009
Filed:
Apr. 14, 2005
Kazuhiko Miyata, Usui Habikino, JP;
Kazuhiko Miyata, Usui Habikino, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A thin film circuit substrate is provided with a voice-output-section driving section, formed of a thin film layer on an insulative substrate, for driving a voice output section. An antisurge section, provided on a wiring between the voice-output-section driving section and an output terminal section thereof, includes an antisurge element. When a surge voltage is applied to the wiring, the antisurge element, monolithically formed on the thin film circuit substrate, connects the wiring to the ground so as to pass a current (surge current), generated by the surge voltage applied to the wiring, to the ground. This makes it possible to provide a thin film circuit substrate which is monolithically provided with a function which can protect a circuit section when a voltage exceeding a predetermined range is applied to the wiring linking the circuit section with an input terminal section or an output terminal section.