Browse Prior Art Database

Bubble Domain Displays

IP.com Disclosure Number: IPCOM000075846D
Original Publication Date: 1971-Nov-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Rosier, LL: AUTHOR

Abstract

In conventional bubble domain displays, the propagation means partially blocks the view of the bubble domains. To solve this problem, it is proposed to use the double Faraday effect.

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Bubble Domain Displays

In conventional bubble domain displays, the propagation means partially blocks the view of the bubble domains. To solve this problem, it is proposed to use the double Faraday effect.

The figure shows a magnetic chip 10 having a bubble domain 12 therein. Located on the underside of chip 10 is a thin metallic reflecting layer 14, on which is deposited the permalloy 16 used to propagate domains 12.

When incident light strikes chip 10, it will pass through the chip and be reflected from layer 14. Thus, the viewer 18 will see domains 12 without obstruction by propagation pattern 16.

If a conductor propagation pattern is used, an insulating layer is placed between the conductor propagation pattern and the reflecting layer 14, so as to insulate the conductor propagation pattern from the reflecting layer.

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