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. 09, 2009
Filed:
Jan. 14, 2005
Masashi Murakami, Soraku-gun, JP;
Yoshiyuki Matsunaga, Kamakura, JP;
Masayuki Masuyama, Nagaokakyo, JP;
Masashi Murakami, Soraku-gun, JP;
Yoshiyuki Matsunaga, Kamakura, JP;
Masayuki Masuyama, Nagaokakyo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An object of the present invention is to provide a shift register in which it is prevented from malfunctioning because of a portion between a first transistor and a second transistor being in a high-impedance state. The shift register of the present invention includes capacitor meansfor storing data outputted from a unit circuitof the preceding block. A first transistoris turned ON only when data is being stored in the capacitor means. A second transistorincludes a control electrode and an input-side diffusion layer connected to the output-side diffusion layer of the first transistor, and is turned ON only when a pulse of a clock signal from the first transistoris inputted to the control electrode and the input-side diffusion layer. Potential controlling meanskeeps the second transistorOFF at least during a period in which the second transistoris supposed to be OFF.