公开(公告)号：US20180040519A1

公开(公告)日：2018-02-08

申请号：US15403330

申请日：2017-01-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dae Seo PARK ,  Song Ho JEONG ,  Oh Seok KWON ,  Jong Tae KIM ,  Choo Ho KIM

IPC: H01L21/66 ,  G01N21/95 ,  G01N21/64 ,  H01L33/56

CPC classification number: H01L22/24 ,  G01N21/64 ,  G01N21/643 ,  G01N21/6452 ,  G01N21/6456 ,  G01N21/8851 ,  G01N21/95 ,  G01N2021/9511 ,  G01N2201/062 ,  H01L33/56 ,  H01L2933/0033

Abstract: A test apparatus includes a lighting unit radiating light on a to-be-tested object having a light transmitting resin containing a light conversion material; a camera unit obtaining an image of the to-be-tested object while the light transmitting resin is emitted by receiving light emitted by the lighting unit; and a controller determining whether the to-be-tested object is defective by calculating gray values from the image obtained by the camera unit.