公开(公告)号：US3567507A

公开(公告)日：1971-03-02

申请号：US3567507D

申请日：1968-04-30

Applicant: VITRAMON INC

Inventor： COBB THOMAS F ,  BELKO WILLIAM R JR

IPC: C04B41/45 ,  C04B41/81 ,  H01L1/10

CPC classification number: C04B41/009 ,  C04B41/4572 ,  C04B41/81 ,  Y10T428/20 ,  C04B41/52 ,  C04B35/00

Abstract: A METHOD OF HERMETICALLY ENCAPSULATING ELECTRONIC COMPONENTS COMPRISING COATING LESS THAN ALL OF THE SURFACES WITH A FIRST REFRACTORY MATERIAL AND FRING THE COMPONENT TO GLAZE THE FIRST REFRACTORY MATERIAL; AND, COATING THE REMAINING SURFACES WITH A SECOND REFRACTORY MATERIAL HAVING A LOWER MELTING TEMPERATURE THAN THE FIRST REFRACTORY MATERIAL AND AGAIN FIRING THE COMPONENT TO GLAZE THE SECOND REFRACTORY MATERIAL.