Browse Prior Art Database

DIRECT COUPLED CRT LIQUID CRYSTAL DISPLAY

IP.com Disclosure Number: IPCOM000022987D
Original Publication Date: 1976-Jun-30
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 241K

Publishing Venue

Xerox Disclosure Journal

Abstract

liquid crystal display is fabricated and operated accord~ ing to U.S. Patent 3,939,346 to Tutihasi optionally in-~ cluding regeneration of the photoconductor by infrared exposure. The display comprises, in turn, a transparent substrate 1, a transparent conductive layer 2, a liquid crystalline layer 3, a photoconductive layer 4, an in~- sulating layer 5, a conductive layer 6, and a layer of fiber optics substituted for the typical transparent substrate conventional to the art, The fiber optic layer can be formed by cutting same out of a coherent fiber optic bundle. The photoconductive layer can comprise any suitable photo~ conductive material.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

DIRECT COUPLED CRT

LIQUID CRYST~L DISPLAY

Ivo P. Gates
Simpei Tutihasi

Proposed Classification
TJ,S, Cl~, 350/16OLC
mt. Cl, G02b 5/23

   liquid crystal display is fabricated and operated accord~
ing to U.S. Patent 3,939,346 to Tutihasi optionally in-~
cluding regeneration of the photoconductor by infrared
exposure. The display comprises, in turn, a transparent
substrate 1, a transparent conductive layer 2, a liquid
crystalline layer 3, a photoconductive layer 4, an in~-
sulating layer 5, a conductive layer 6, and a layer of fiber
optics substituted for the typical transparent substrate
conventional to the art, The fiber optic layer can be
formed by cutting same out of a coherent fiber optic bundle.
The photoconductive layer can comprise any suitable photo~
conductive material.

The display is bonded directly to the phosphor coating of
the CRT via the fiber optics layer by use of transparent
epoxy resins or other suitable optical glues.

In operation, the image of the CRT is coupled to the display
device via the fiber optic layer and causes photoconductive
layer 4 to discharge in exposed areas, thereby initiating

CRT

PHOSPHOR

COAflNG

Volume 1 Number 6 June 1976 77

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DIRECT COUPLED CRT LIQUID CRYSTAL DISPLAY (Cont~d)

gain photocurrent in exposed areas, As indicated in U.S.
Patent 3,939,346, liquid crystal e1ectro~opticeffects
which depend upon either fie1d~effects or current or charge
carrier flow can...