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Thin Film Electroluminescent Storage CRT

IP.com Disclosure Number: IPCOM000087858D
Original Publication Date: 1977-Mar-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Howard, WE: AUTHOR

Abstract

It has been demonstrated that high brightness electroluminescent (EL) display panels with inherent memory can be made using evaporated ZnS: Mn. It has also been shown that such panels can be written (i.e., turned on) with light. In like manner an electron beam, which would also create electron excitations in the ZnS, may also be used to produce a writing effect on a bistable panel.

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Thin Film Electroluminescent Storage CRT

It has been demonstrated that high brightness electroluminescent (EL) display panels with inherent memory can be made using evaporated ZnS: Mn. It has also been shown that such panels can be written (i.e., turned on) with light. In like manner an electron beam, which would also create electron excitations in the ZnS, may also be used to produce a writing effect on a bistable panel.

Thus, by incorporating a bistable AC thin-film EL panel into a cathode-ray tube (CRT) faceplate, as shown in the figure, a storage display may be achieved with the advantages of electron-beam addressing. The light output would not, however, suffer from the constraints of conventional storage tubes; the EL power would come from an external low frequency supply rather than from the electron beam (i.e., no flood gun is involved).

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