Manufacture of electroluminescent display devices

Details Manufacture of electroluminescent display devices Manufacture of electroluminescent display devices

H - Electricity

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L

345/9

H01L 21/70 (2006.01) H01L 21/762 (2006.01) H01L 27/15 (2006.01)

Patent

CA 1134481

ABSTRACT In the manufacture of a monolithic LED array, in which portions of the array are electrically isolated from one another by channels cut or etched through the slice of n-type material, the channels are filled with a glass frit which is bonded to the semi- conductor material on each side of the channel, to give a robust construction. A suspension of glass particles in a liquid medium is introduced into the channels, then the liquid is removed and the glass powder is sintered; the channels may be of uniform width, or may consist of a wide portion, formed first from the back of the slice, and a narrower, shallow portion formed subsequently from the front of the slice to meet the wide portion, to give high resolution. The glass suspension may be introduced into the channels by spreading or spinning over the slice surface, or by electrophoretic deposition and/or capillary action.

339548

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