公开(公告)号：US3609475A

公开(公告)日：1971-09-28

申请号：US3609475D

申请日：1970-05-04

Applicant: HEWLETT PACKARD CO

Inventor： KAPOSHILIN GEORGE N

IPC: H01L33/52 ,  H01L33/62 ,  H01L1/00

CPC classification number: H01L33/62 ,  H01L24/97 ,  H01L33/52 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2924/12041 ,  H01L2924/00014

Abstract: A light-emitting diode (LED) is bonded to a pair of metal leads which are attached to a metal lead frame with a plurality of lead pairs, such that its optical axis is parallel to the longitudinal axis of the leads. The device so formed is encapsulated in two colors of plastic, a clear portion over the diode to transmit light from the diode and a dark portion behind the diode to improve the diode on-off contrast and make a hermetic seal with the leads. After encapsulation individual devices are separated from each other by cutting the leads from the lead frame.