US PATENT SUBCLASS 345 / 87
.~.~.~ Liquid crystal display elements (LCD)

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.~.~.~ Liquid crystal display elements (LCD) {9}
88  DF  .~.~.~.~> Color
89  DF  .~.~.~.~> Gray scale capability (e.g., halftone)
90  DF  .~.~.~.~> Control means at each display element {3}
94  DF  .~.~.~.~> Waveform generation {3}
98  DF  .~.~.~.~> Specific display element control means (e.g., latches, memories, logic) {2}
101  DF  .~.~.~.~> Data signal compensation in response to temperature
102  DF  .~.~.~.~> Backlight control
103  DF  .~.~.~.~> Grouped electrodes (e.g., matrix partitioned into sections)
104  DF  .~.~.~.~> Input/output liquid crystal display panel

DEFINITION

Classification: 345/87

Liquid crystal display elements (LCD):

(under subclass 84) Subject matter in which the matrix light-controlled display elements* include liquid crystal display elements* or liquid with crystalline properties.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38, and 50, for segmented liquid crystal display elements.

SEE OR SEARCH CLASS

349, Liquid Crystal Cells, Elements and Systems, appropriate subclasses for liquid crystal cell structure.