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Browse Prior Art Database

Luminescent Display Device

IP.com Disclosure Number: IPCOM000075581D
Original Publication Date: 1971-Oct-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Kazan, B: AUTHOR

Abstract

A low-voltage luminescent display device shown in the figure comprises a glass envelope 2, the length and width of which is considerably greater than the spacing between the transparent front wall 4 and transparent rear wall 6. Segments 8, each consisting of a glass substrate 10 onto which is deposited a thin layer of tin oxide 12 or similar transparent electrically conducting material, are supported in envelope 2. Phosphor layers 14, such as ZnO, are deposited on tin oxide layers 12. Alternatively, the segment 8 may be a rigid conductive substrate having a phosphor layer 12 hereon.

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Luminescent Display Device

A low-voltage luminescent display device shown in the figure comprises a glass envelope 2, the length and width of which is considerably greater than the spacing between the transparent front wall 4 and transparent rear wall 6. Segments 8, each consisting of a glass substrate 10 onto which is deposited a thin layer of tin oxide 12 or similar transparent electrically conducting material, are supported in envelope 2. Phosphor layers 14, such as ZnO, are deposited on tin oxide layers 12. Alternatively, the segment 8 may be a rigid conductive substrate having a phosphor layer 12 hereon.

Individual leads 16 attached to corresponding conducting layers 12 leave the wall of envelope 2 and are connected to commutator 18, so that a timed electrical potential from signal source 23 can be applied by switch arm 20. Alternatively, an electrical circuit can be used to supply the timed electrical potential.

Two parallel electrodes 24 and 26, spaced a few millimeters apart are provided in enclosure 2. The electrodes 24 and 26 may be wire meshes, parallel wires or continuous plates. Current limiting resistors 30 and battery 32 provide a discharge 27 between the electrodes, producing a plasma 28 of free electrons and positive ions within the chamber 2.

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