公开(公告)号：US3840283A

公开(公告)日：1974-10-08

申请号：US36566573

申请日：1973-05-31

Applicant: IBM

Inventor： ELDRIDGE A ,  SANSOM A

IPC: H01J9/26 ,  H01J29/10 ,  H01J31/10 ,  H01J9/18

CPC classification number: H01J29/10 ,  H01J9/263 ,  H01J31/10

Abstract: A method of manufacturing storage/display two chamber tubes by providing a molded soft glass envelope with a high outer shoulder at an open end and a low inner shoulder at the same end to form a trough in-between. The trough is filled with liquid metal, having a suitable melting point, such as indium, and the metal is allowed to solidify. A metal ring bearing a membrane for separating the two chambers one from another is placed on the solidified metal with air passages provided between the ring and the trough metal. A faceplate is sealed to the outer shoulder providing a closure of the second chamber and both chambers of the tube are then evacuated through a single tubulation. Finally, the tube is heated to bake out gasses trapped in the walls of the tube and to melt the trough metal. Upon melting, the metal ring settles into the trough metal forming a hermetic seal between the two chambers.