公开(公告)号：US3582300A

公开(公告)日：1971-06-01

申请号：US3582300D

申请日：1968-06-28

Applicant: PHILIPS CORP

Inventor： COMBES CHRISTOPHER ROBERT ,  SCHOLES GEOFFREY WILLIAM

IPC: C03C27/02 ,  H01J5/26 ,  H01L21/48 ,  H01L29/00 ,  H01L31/00

CPC classification number: H01L29/00 ,  C03C27/02 ,  H01J5/26 ,  H01J2893/0043 ,  H01L21/48 ,  H01L31/00

Abstract: THIS METHOD OF MANUFACTURING A SEMICONDUCTOR CONTAINER WHICH IS COMPRISED OF A CYLINDRICAL METAL CAN HAVING A GLASS WINDOW AT ONE END INVOLVES THE STEPS OF PLACING A SOLID GLASS PREFORM IN AN OPEN ENDED METAL CAN AND CAUSING THE SOLID GLASS PREFORM TO BECOME MOLTEN GLASS BY PLACING THE METAL CAN IN A HEATED ATMOSPHERE. THE CAN WITH THE SOLID GLASS PREFORM IS PLACED IN A MOULD JIG IN WHICH THE JIG HAS A LENS FORMED CAVITY AT ITS BASE SO THAT WHEN THE GLASS BECOMES MOLTEN IT WILL FLOW INTO THE CAVITY TO FORM THE PROPER WINDOW. AFTER THE COMBINA-

TION IS COOLED A HERMETIC SEAL IS ESTABLISHED BETWEEN THE GLASS AND THE METAL CAN. SUBSEQUENTLY THE GLASS WINDOW IS REHEATED TO A TEMPERATURE ABOVE THE SOFTENING TEMPERATURE OF GLASS AND BELOW THE WORKING TEMPERATURE SO THAT IT MAY BECOME THERMALLY POLISHED.