DRIVING DEVICE OF CAPACITIVE LOAD

Japanese Patent JP2804259

B2

PROBLEM TO BE SOLVED: To reduce power consumption without complexing a circuit by holding a potential of a first power source terminal higher than that of a second power source terminal and making a potential difference between both terminals fully large magnitude for driving a control section.
SOLUTION: A source side switching element is provided between a second power source terminal 4 and an output terminal 3, and a sync side switching element is provided between the output terminal 3 and a first power source terminal 2. And a potential of the second power source terminal 4 is held higher than that of the first power source terminal 2 by the prescribed potential, also when either of both power sources 2, 4 is connected to a positive high voltage power source, a negative high voltage power source, or a ground potential, the other is held a floating state. This prescribed potential has fully large magnitude for driving a control section controlling ON-OFF of each switching element of the source side and the sync side and smaller value than voltage of the high voltage power source. Thereby, power consumption can be largely reduced, and a driving circuit of a capacitive load 13 being advantageous for integration can be obtained.

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JP4790486	Data drive circuit, light emission display device using this, and its drive method

Okitsu Mitsuhiko
Kenji Abe
Tadaaki Kariya

JP32643996A

September 24, 1998

December 06, 1996

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株式会社日立製作所
日立エンジニアリング株式会社

G09G3/30; (IPC1-7): G09G3/30

JP62283717A
JP6264123A

Ogawa Katsuo

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