Title:
PREDRIVE CIRCUIT AND DISPLAY UNIT
Document Type and Number:
Japanese Patent JP3947438
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a predrive circuit and a display unit for driving an output element so as to stably transmit a control signal even when a reference potential generated at an output element side is turned into a high voltage.
SOLUTION: A comparator circuit 41a compares an input signal with a reference voltage signal being the reference of comparison. An input level shift circuit 41b converts an input signal having a first reference potential into a signal VLS1 corresponding to a substrate potential Vsub based on the comparison result, and outputs it. An output level shift circuit 41c converts the signal VLS1 outputted by the output level shift circuit 41b into a signal VLS2 corresponding to an output power supply voltage Vcc1, and outputs it. A signal amplifier circuit 42 outputs a driving signal Vg for driving a switch SW5 of an output element by amplifying the signal VLS2 outputted by the output level shift circuit 41c.
Inventors:
Makoto Onozawa
Haruo Koizumi
Haruo Koizumi
Application Number:
JP2002220010A
Publication Date:
July 18, 2007
Filing Date:
July 29, 2002
Export Citation:
Assignee:
Fujitsu Hitachi Plasma Display Limited
International Classes:
G09G3/20; H03K17/10; G09G3/288; G09G3/291; G09G3/296; G09G3/298; H03K4/02; H03K4/08; H03K17/687; (IPC1-7): H03K17/10; G09G3/20; G09G3/28; H03K4/02; H03K4/08; H03K17/687
Domestic Patent References:
| JP10117134A | ||||
| JP3230559A | ||||
| JP6204406A | ||||
| JP2001202054A |
Attorney, Agent or Firm:
Takayoshi Kokubun
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