公开(公告)号：US3894633A

公开(公告)日：1975-07-15

申请号：US51769874

申请日：1974-10-24

Applicant: WESTERN ELECTRIC CO

Inventor： EGAN JAMES J ,  KERECZ JOSEPH S ,  KUBA SAMUEL ,  WANESKY WILLIAM R

IPC: B07C5/344 ,  H01L21/00 ,  B07C7/00

CPC classification number: H01L21/67271 ,  B07C5/344 ,  Y10T156/19

Abstract: A sorting apparatus transfers selected semiconductor devices from a first carrier, to which they have been cemented with an adhesive, to a second carrier to form a new array composed entirely of selected devices by: heating the first carrier just enough to soften the adhesive, heating the selected devices and small adjacent area with a hot air gun to a high enough temperature to melt the adhesive and release the device, and transferring the device to a second carrier. This avoids deleterious changes in the adhesive which arise from prolonged heating at the elevated melting temperature and which make it difficult to remove any remanent adhesive which clings to the devices. When the second carrier is dark, such as a barium ferrite magnet is, an array of light colored squares, one for each device, is formed on the carrier. Since each square is obscured when a device is transferred to it, or is distinctly visible when transfer does not occur, an immediate indication of the completeness of the array is provided with only cursory inspection.

Abstract translation: 分拣装置将选定的半导体器件从其已经用粘合剂粘合的第一载体传送到第二载体，以形成完全由选定器件组成的新阵列，其方法是：加热第一载体足够软化粘合剂，加热 所选择的装置和具有热风枪的小邻近区域到足够高的温度以熔化粘合剂并释放装置，并将装置转移到第二载体。 这避免了由于在升高的熔融温度下的长时间加热而产生的粘合剂的有害变化，并且这使得难以除去附着于器件的任何残留粘合剂。 当第二载体较暗时，例如钡铁氧体磁体，在载体上形成一个浅色正方形，每个装置一个。 由于每个方块在设备转移到其上时都会被遮挡，或者在不发生传输时是明显可见的，所以仅提供粗略的检查即可提供阵列的完整性。

公开(公告)号：US3494742A

公开(公告)日：1970-02-10

申请号：US3494742D

申请日：1968-12-23

Applicant: WESTERN ELECTRIC CO

Inventor： KUBA SAMUEL ,  LAGARDE ADOLPH K JR

IPC: C30B13/20 ,  C30B13/28 ,  C30B13/32 ,  B01J17/10 ,  B01J17/36

CPC classification number: C30B13/32 ,  C30B13/20 ,  C30B13/285 ,  Y10S117/911 ,  Y10T117/1084