Driving circuit and display device

Computer graphics processing and selective visual display system – Display driving control circuitry

Reexamination Certificate

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Details

C345S060000, C345S211000

Reexamination Certificate

active

07138988

ABSTRACT:
In a circuit driving a capacitive load Cp, current passed through a transistor Q3, a diode D1and a recovering coil L is passed through lines L1, L2, and the inductance components of the lines L1and L2, and the drain-source capacitances of the transistors Q1and Q2generate LC resonance. Capacitors C1and C2are connected in parallel to the drain-source regions of the transistors Q1and Q2to increase the total drain-source capacitance and reduce the resonance frequency, so that unwanted electromagnetic wave radiation in a frequency band affecting other electronic devices is suppressed.

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English Language Abstract JP3-183211.
English Language Abstract JP8-23242.
English Language Abstract JP10-268831.
English Language AbstractJP 1-261923.
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English language Abstract of JP 10-301530.
Lai, “Resonant Snubber-Based Soft-Switching Inverters for Electric Propulsion Drives, ” IEEE Transactions on Industrial Electronics, vol. 44, No. 1, Feb. 1997, pp. 71-80.

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