Invention Grant
- Patent Title: Method of producing a plurality of optoelectronic semiconductor chips, and optoelectronic semiconductor chip
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Application No.: US14364099Application Date: 2012-11-12
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Publication No.: US09825198B2Publication Date: 2017-11-21
- Inventor: Patrick Rode , Lutz Hoeppel , Norwin von Malm , Stefan Illek , Albrecht Kieslich , Siegfried Herrmann
- Applicant: OSRAM Opto Semiconductors GmbH
- Applicant Address: DE
- Assignee: OSRAM Opto Semiconductors GmbH
- Current Assignee: OSRAM Opto Semiconductors GmbH
- Current Assignee Address: DE
- Agency: DLA Piper LLP (US)
- Priority: DE102011056993 20111223; DE102012101409 20120222
- International Application: PCT/EP2012/072403 WO 20121112
- International Announcement: WO2013/092004 WO 20130627
- Main IPC: H01L21/304
- IPC: H01L21/304 ; H01L21/28 ; H01L21/3205 ; H01L21/283 ; H01L31/18 ; H01L33/36 ; H01L33/00 ; H01L33/38

Abstract:
A method of producing a plurality of optoelectronic semiconductor chips includes a) providing a layer composite assembly having a principal plane which delimits the layer composite assembly in a vertical direction, and includes a semiconductor layer sequence having an active region that generates and/or detects radiation, wherein a plurality of recesses extending from the principal plane in a direction of the active region are formed in the layer composite assembly; b) forming a planarization layer on the principal plane such that the recesses are at least partly filled with material of the planarization layer; c) at least regionally removing material of the planarization layer to level the planarization layer; and d) completing the semiconductor chips, wherein for each semiconductor chip at least one semiconductor body emerges from the semiconductor layer sequence.
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