US PATENT SUBCLASS 345 / 74
.~.~ Cathodoluminescent type

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}
74.~.~ Cathodoluminescent type {1}
75  DF  .~.~.~> Vacuum fluorescent

DEFINITION

Classification: 345/74

Cathodoluminescent type:

(under subclass 55) Subject matter wherein the display elements* generate light due to the application of electrical control through an anode or cathode to emit an electron beam at each display element* to strike a phosphor layer.