WAFER INSPECTION METHOD AND INSPECTION APPARATUS

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United States of America Patent

APP PUB NO 20230105201A1
SERIAL NO

17956301

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Abstract

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A wafer inspection method and inspection apparatus that perform a voltage inspection of a die on a wafer by a probe module. The probe module includes a processing module, a first probe coupled to a first electrode point of the die, and a second probe coupled to a second electrode point of the die. The first probe is coupled to the processing module, and the second probe is grounded. The processing module provides the die with a driving current through the first probe, and obtains an inspection voltage corresponding to the die. The processing module generates an inspection result of the inspection voltage based on two reference voltages respectively representing a high critical threshold value and a low critical threshold value of the die under a normal operation. The inspection result indicates an operating status of the die. Thus, inspection costs are reduced and inspection efficiency is enhanced.

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Patent Owner(s)

Patent OwnerAddress
CHROMA ATE INCNO 88 WENMAO RD GUISHAN DIST TAOYUAN CITY 333001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
CHANG, MIN-HUNG Taoyuan City, TW 6 26
CHAO, TZU-TU Taoyuan City, TW 3 0
TSENG, I-SHIH Taoyuan City, TW 18 62
WANG, TSUN-I Taoyuan City, TW 37 313

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