Browse Prior Art Database

Alphanumeric Electrochemical Display

IP.com Disclosure Number: IPCOM000074831D
Original Publication Date: 1971-Jun-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Zechman, JH: AUTHOR

Abstract

Electrochemical plating display device 10 is configured in Figs. 1 and 2 as a container having opaque top, bottom, and side walls 11 - 14, respectively. Walls 11 - 14 are coated inwardly with a suitable conductive material, i.e. copper, not shown. The front plate is a transparent member 16.

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Alphanumeric Electrochemical Display

Electrochemical plating display device 10 is configured in Figs. 1 and 2 as a container having opaque top, bottom, and side walls 11 - 14, respectively. Walls 11 - 14 are coated inwardly with a suitable conductive material, i.e. copper, not shown. The front plate is a transparent member 16.

Container 10 has a rear wall which is a substrate 17. Substrate 17 carries a seven-segment pattern of conductive members 18 which forms one set of selectable plating electrodes. By way of example, members 18 are isolated portions which have been etched from the conductive layer 15, which is plated to the inner face of insulator substrate 17. Member 15 is preferably made of nickel to provide a background contrast when the particular segment(s) 18 is plated during the display mode of operation with another metal, e.g. copper. Substrate 17 and front plate 16, together with the appropriate parts of walls 11 - 14, form a demountable sealed chamber 19, which contains a suitable electrolyte, such as CuSO(4). Appropriately, insulated wire leads, not shown, are connected to the segments 18 and the members 11 - 14. In turn, the wire leads which are connected to the segments 18 are connected to a selective switching means, not shown. The wire leads which are connected to the conductive coating of members 11 - 14 are commonly connected to form collectively the other plating electrode. A polarity reversal means, not shown, is connected to an appropriate...