Title:
LIQUID CRYSTAL DRIVING CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2002244622
Kind Code:
A
Abstract:
To solve the problems that a matrix type liquid crystal display device has required a new circuit board design such as arrangement of storage capacitor and wiring thereto to suppress power consumption, and also the number of parts has had to be increased.
In the liquid crystal display device, a column electrode and a counter electrode are provided with a switch for temporarily shorting both electrodes in synchronizm with the timing of alternating. Thus, voltage can be changed almost to the middle of the alternating without consuming power, and it is also unnecessary to arrange new external components. Therefore, low power consumption and cost reduction can be achieved.
Inventors:
KUDO YASUYUKI
YOKOTA YOSHIKAZU
KUROKAWA KAZUNARI
HIGA ATSUHIRO
YOKOTA YOSHIKAZU
KUROKAWA KAZUNARI
HIGA ATSUHIRO
Application Number:
JP2001036303A
Publication Date:
August 30, 2002
Filing Date:
February 14, 2001
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G02F1/133; G09G3/20; G09G3/36; (IPC1-7): G09G3/36; G02F1/133; G09G3/20
Domestic Patent References:
| JP2000039870A | 2000-02-08 | |||
| JP2000221932A | 2000-08-11 | |||
| JPH10333629A | 1998-12-18 | |||
| JPH1130975A | 1999-02-02 | |||
| JPH08251518A | 1996-09-27 | |||
| JPH0611731A | 1994-01-21 | |||
| JPH10123483A | 1998-05-15 |
Attorney, Agent or Firm:
Sakuta Yasuo