US PATENT SUBCLASS 345 / 92
.~.~.~.~.~ Thin film tansistor (TFT)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
84  DF  .~.~ Light-controlling display elements {6}
87  DF  .~.~.~ Liquid crystal display elements (LCD) {9}
90  DF  .~.~.~.~ Control means at each display element {3}
92.~.~.~.~.~ Thin film tansistor (TFT)

DEFINITION

Classification: 345/92

Thin film transistor (TFT):

(under subclass 90) Subject matter wherein the switching means includes a transistor made by using thin film techniques for controlling each display element*.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) appropriate subclasses for thin film transistor structure.

349, Liquid Crystal Cells, Elements, and Systems,

42+, for use of transistors in LCD structure.