Invention Grant
- Patent Title: Surface inspection apparatus for semiconductor chips
- Patent Title (中): 半导体芯片表面检测装置
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Application No.: US14603809Application Date: 2015-01-23
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Publication No.: US09500599B2Publication Date: 2016-11-22
- Inventor: Youn-Jo Mun , Hoon Sohn , Sang-Young Kim , Yun-Kyu An , Sung-Il Cho , Seung-Weon Ha , Jin-Yeol Yang , Soon-Kyu Hwang
- Applicant: Samsung Electronics Co., Ltd.
- Applicant Address: KR
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR
- Agency: Onello & Mello, LLP
- Priority: KR10-2014-0008579 20140123
- Main IPC: G01N21/95
- IPC: G01N21/95 ; G01J5/10 ; G01J5/08 ; H04N5/33 ; G01J5/00

Abstract:
A surface inspection apparatus and method of inspecting chip surfaces includes a laser generator that generates a periodic CW laser and is transformed into an inspection laser beam having a beam size smaller than a surface size of the chip. Thus, the inspection laser beam is irradiated onto a plurality of the semiconductor chips such that the semiconductor chips are partially and simultaneously heated. Thermal waves are detected in response to the inspection laser beam and thermal images are generated corresponding to the thermal waves. A surface image is generated by a lock-in thermography technique and hold exponent analysis of the thermal image, thereby generating surface image in which a surface defect is included. Time and accuracy of the surface inspection process is improved.
Public/Granted literature
- US20150204800A1 SURFACE INSPECTION APPARATUS FOR SEMICONDUCTOR CHIPS Public/Granted day:2015-07-23
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