Cathode ray tube having a flat faceplate attached by a compliant pressure bonded seal
AssigneeU.S. Philips Corporation
InventorLeslie H. Francis
Life of this patent
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Abstract
A cathode ray tube has an envelope comprising a mild steel rear housing (1) with a side wall portion (4) defining an opening over which a flat, glass, faceplate (2) is mounted. The faceplate is sealed in a vacuum tight manner using a compliant pressure bonded seal (10), comprising pressure deformable material such as lead, to the outer, flat surface of a flange (8) of the rear housing which projects inwardly of the opening from the side wall portion.
Claims5
A cathode ray tube having an envelope comprising a metal rear housing having a wall portion defining an opening and a substantially flat glass faceplate which extends over the opening and is sealed in a vacuum-tight manner to the surface of a flange on the rear housing extending around the opening by means of a compliant pressure bonded seal between the faceplate and the flange and comprising a pressure deformable material, characterised in that the flange of the rear housing projects inwardly of the opening and has an edge within said opening.
Dependencies are inferred from the claim text.