Title:
表示装置ならびにその駆動回路および駆動方法
Document Type and Number:
Japanese Patent JP4225777
Kind Code:
B2
Abstract:
In a signal line drive circuit of an active-matrix type liquid-crystal display which is a voltage-controlled type display with a capacitive load, n selector switches ( 161 to 16 n) are provided between buffer circuits ( 151 to 15 n) to which voltages responsive to an image to be displayed are inputted from reference voltage selection circuits ( 131 to 13 n), and output terminals (T 1 to Tn) to which are connected image signal lines. These selector switches ( 161 to 16 n), based on a shorting control signal (Csh) that is at a high level when the polarity is reversed to perform AC drive of the liquid-crystal panel, switch the output signals (OUT 1 to OUTn of the image signal line drive circuit between the output signals of the buffer circuits ( 151 to 15 n) and the common electrode signal (Vcom). By doing this, each of the image signal lines is, for a prescribed time only when the polarity is reversed, separated from the buffer circuits ( 151 to 15 n) and shorted to the common electrode. This configuration reduces the power consumption of the signal line drive circuit
Inventors:
Koji Kumada
Takashi Ota
Haruhito Kagawa
Takashi Ota
Haruhito Kagawa
Application Number:
JP2002367738A
Publication Date:
February 18, 2009
Filing Date:
December 19, 2002
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G02F1/133; G09G3/36; G09G3/20
Domestic Patent References:
| JP11030975A | ||||
| JP6202157A | ||||
| JP2001265295A | ||||
| JP7253764A | ||||
| JP2001147420A |
Attorney, Agent or Firm:
Akihiro Shimada