US PATENT SUBCLASS 349 / 34
.~.~ With application of holding or bias voltage (i.e., voltage which does not change the optical state of the liquid crystal)

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349 /   HD   LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS

19  DF  PARTICULAR EXCITATION OF LIQUID CRYSTAL {6}
33  DF  .~ Electrical excitation of liquid crystal (i.e., particular voltage pulses, AC vs. DC, threshold voltages, etc.) {8}
34.~.~ With application of holding or bias voltage (i.e., voltage which does not change the optical state of the liquid crystal)

DEFINITION

Classification: 349/34

With application of holding or bias voltage (i.e., voltage which does not change the optical state of the liquid crystal):

(under subclass 33) Subject matter wherein a voltage applied to the liquid crystal does not change the optical state of the liquid crystal.