Invention Grant
- Patent Title: Method of producing optoelectronic semiconductor chips
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Application No.: US15327697Application Date: 2015-07-23
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Publication No.: US10411155B2Publication Date: 2019-09-10
- Inventor: Lorenzo Zini , Alexander Frey , Joachim Hertkorn , Berthold Hahn
- Applicant: OSRAM Opto Semiconductors GmbH
- Applicant Address: DE Regensburg
- Assignee: OSRAM Opto Semiconductors GmbH
- Current Assignee: OSRAM Opto Semiconductors GmbH
- Current Assignee Address: DE Regensburg
- Agency: DLA Piper LLP (US)
- Priority: DE102014110884 20140731
- International Application: PCT/EP2015/066919 WO 20150723
- International Announcement: WO2016/016098 WO 20160204
- Main IPC: H01L33/00
- IPC: H01L33/00 ; H01L33/32 ; H01L33/62 ; H01S5/02

Abstract:
A method of producing optoelectronic semiconductor chips includes growing a semiconductor layer sequence on a growth substrate; applying at least one metallization to a contact side of the semiconductor layer sequence, which contact side faces away from the growth substrate; attaching an intermediate carrier to the semiconductor layer sequence, wherein a sacrificial layer is attached between the intermediate carrier and the semiconductor layer sequence; removing the growth substrate from the semiconductor layer sequence; structuring the semiconductor layer sequence into individual chip regions; at least partially dissolving the sacrificial layer; and subsequently removing the intermediate carrier, wherein, in removing the intermediate carrier, part of the sacrificial layer is still present, removing the intermediate carrier includes mechanically breaking remaining regions of the sacrificial layer, and the sacrificial layer is completely removed after removing the intermediate carrier.
Public/Granted literature
- US20170207363A1 METHOD OF PRODUCING OPTOELECTRONIC SEMICONDUCTOR CHIPS Public/Granted day:2017-07-20
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