US PATENT SUBCLASS 345 / 79
.~.~.~ Field period polarity reversal

Current as of: June, 1999
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345 /   HD   COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS

30  DF  PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) {4}
55  DF  .~ Display elements arranged in matrix (e.g., rows and columns) {10}
76  DF  .~.~ Electroluminescent {5}
79.~.~.~ Field period polarity reversal

DEFINITION

Classification: 345/79

Field period polarity reversal:

(under subclass 76) Subject matter in which the selective electrical control provides waveforms to the electroluminescent display elements* in an alternating positive and negative manner.