Title:
半導体装置及び電子機器
Document Type and Number:
Japanese Patent JP5190549
Kind Code:
B2
Abstract:
An object of the present invention is to provide a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit. In an embodiment of the pulse signal output circuit, a transistor has a source terminal or a drain terminal connected to a gate electrode of another transistor having a source terminal or a drain terminal forming an output terminal of the pulse signal output circuit, the channel length of the transistor being longer than the channel length of the other transistor. Thereby, the amount of a leakage current modifying the gate potential of the other transistor can be reduced, and a malfunction of the pulse signal output circuit can be prevented.
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Inventors:
Kohei Toyotaka
Application Number:
JP2012162734A
Publication Date:
April 24, 2013
Filing Date:
July 23, 2012
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H03K17/687; H01L29/786; H03K3/356; H03K17/06; H03K19/0175; H03K23/44
Domestic Patent References:
| JP2008122939A | ||||
| JP2008107807A | ||||
| JP2004226429A |