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Electroluminescent Photoconductive Device

IP.com Disclosure Number: IPCOM000098813D
Original Publication Date: 1959-Dec-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Supernowicz, EK: AUTHOR [+2]

Abstract

An electroluminescent photoconductor device is made by depositing electroluminescent phosphor particles on one side of a thin plate of electrically conductive glass 1 and depositing photoconductive particles on the other side of the glass.

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Electroluminescent Photoconductive Device

An electroluminescent photoconductor device is made by depositing electroluminescent phosphor particles on one side of a thin plate of electrically conductive glass 1 and depositing photoconductive particles on the other side of the glass.

To coat each side of the glass plate 1 (upper drawing) with particles (either electroluminescent or photoconductive), the plate 1 is mounted on the periphery 2 of a centrifuge particle classifier and rotated. The particles move in a stream of air from a hopper 3 through a nozzle 4 and along paths indicated by arrows 5. The smaller particles are ejected at point 6 and deposited uniformly on the glass plate 1.

In the final assembly (lower drawing), particles deposited on conductive films 7 and 8 constitute a phosphor layer 9 and a photoconductive layer 10 on opposite sides of the glass. Both deposited layers are held by binder coatings 11 of lacquer or other suitable material. Metal coatings 12 are applied for electrodes.

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