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:
Jul. 10, 1979
Filed:
Dec. 22, 1977
Hidetoshi Maeda, Tenri, JP;
Toshihiro Ohba, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a touch sensitive electronic switching circuit including a C-MOS inverter, for use in electronic wristwatches, a resistor of 1-10 M.OMEGA. is connected to the source electrode of the P-channel MOS type field effect transistor included within the C-MOS inverter, whereby the threshold voltage level of the C-MOS inverter is shifted to a low level to enhance the reliability of the touch sensitive electronic switching circuit. In another embodiment, the resistor of 1-10 M.OMEGA. is connected to the source electrode of the N-channel MOS type field effect transistor included within the C-MOS inverter, whereby the threshold voltage level of the C-MOS inverter is shifted to a high level to enhance the reliability of the touch sensitive electronic switching circuit.