Patents Examined by Kimnhung Hguyen
  • Liquid crystal drive circuit
    Patent number: 6281871
    Abstract: A liquid crystal drive circuit for charging video signals to an active matrix type liquid crystal panel as two AC signals in relation to polarity inversion of an opposed electrode, characterized in that it is provided with an amplifier for delivering an inverted video signal and a non-inverted video signal and with a mixer circuit for offsetting AC components by mixing the inverted video signal and said non-inverted video signal, thereby regulating a DC level of said amplifier on the basis of an output signal from the mixer circuit.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: August 28, 2001
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Kazunori Nohara