Title:
半導体装置
Document Type and Number:
Japanese Patent JP5216945
Kind Code:
B1
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.
Inventors:
Kohei Toyotaka
Application Number:
JP2013000551A
Publication Date:
June 19, 2013
Filing Date:
January 07, 2013
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 |