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Title:
SHIFT REGISTER, SCAN DRIVING CIRCUIT AND DISPLAY APPARATUS HAVING THE SAME
Document Type and Number:
Japanese Patent JP2005050502
Kind Code:
A
Abstract:

To provide a shift register, a scan driving circuit and a display apparatus having the shift register.

In the shift register comprising a plurality of stages and outputting successively a plurality of output signals, a driving part outputs an output signal of the present stage responding to a second clock signal having a different phase from the first clock signal. In a charge part, electric charge is charged by a scan start signal or an output signal of one stage out of the previous stage. A discharge part discharges the electric charge charged to the charge part in accordance with an output signal of one stage out of the next stages. A holding part holds the output signal of the present stage within a first voltage. Therefore, floating of a gate of pull-up transistor due to parasitic capacitance between the gate and a drain of the pull-up transistor of the drive part outputting a scan signal can be prevented.


Inventors:
BUN SHOKAN
Application Number:
JP2004202166A
Publication Date:
February 24, 2005
Filing Date:
July 08, 2004
Export Citation:
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Assignee:
SAMSUNG ELECTRONICS CO LTD
International Classes:
G02F1/133; G09G3/20; G09G3/36; G11C19/00; G11C19/18; G11C19/28; (IPC1-7): G11C19/28; G02F1/133; G09G3/20; G09G3/36; G11C19/00
Domestic Patent References:
JPS58181321A1983-10-24
JP2006228312A2006-08-31
JP2007317344A2007-12-06
JP2007317288A2007-12-06
JP2002175695A2002-06-21
JPH05267636A1993-10-15
JPS52155928A1977-12-24
Attorney, Agent or Firm:
Yukio Ono
Tomoko Inazumi