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Title:
SEMICONDUCTOR DEVICE
Document Type and Number:
Japanese Patent JP2012253789
Kind Code:
A
Abstract:

To provide a pulse signal output circuit allowing stable operation and a shift resister including the circuit.

A pulse signal output circuit includes first to tenth transistors. The ratios W/L of channel widths W to channel lengths L of the first transistor and the third transistor are set to be larger than the ratio W/L of the sixth transistor, the ratio W/L of the fifth transistor is set to be larger than the ratio W/L of the sixth transistor, the ratio W/L of the fifth transistor is set to be the same as the ratio W/L of the seventh transistor, and the ratio W/L of the third transistor is set to be larger than the ratio W/L of the fourth transistor. This configuration can provide a pulse signal output circuit allowing stable operation and a shift resister including the circuit.


Inventors:
INOUE KIYOKO
TOYOTAKA KOHEI
MIYAKE HIROYUKI
MIYAZAKI AYA
SHISHIDO HIDEAKI
KUSUNOKI KOJI
Application Number:
JP2012162842A
Publication Date:
December 20, 2012
Filing Date:
July 23, 2012
Export Citation:
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Assignee:
SEMICONDUCTOR ENERGY LAB CO LTD
International Classes:
H03K3/356; H01L21/8234; H01L27/06; H01L27/088; H01L29/786; H03K19/00; H03K19/0175; H03K23/44
Domestic Patent References:
JPS63242020A1988-10-07
JP2009177296A2009-08-06
JP2005012944A2005-01-13
JP2001044820A2001-02-16
JP2009302631A2009-12-24