Samsung Electronics Co., Ltd.

Young Min Hur

Jun Sung Lee

Mu Yer Lee

Hyo Bum Kang

Jae Lyang Jung

A particle detection device includes a chuck stage on which a wafer is configured to be seated, first and second adsorption holes shaped as closed concentric curves passing through the chuck stage, a first adsorption module connected to the first adsorption hole under the chuck stage and configured to provide a vacuum pressure, a second adsorption module connected to the second adsorption hole under the chuck stage and configured to provide a vacuum pressure, a pressure gauge configured to measure vacuum pressures of the first and second adsorption holes and a detection module configured to receive the vacuum pressures of the first and second adsorption holes from the pressure gauge and detect whether the wafer is fixed or not and whether particle is present or not, based on the received vacuum pressures. The first and second adsorption modules sequentially provide the vacuum pressure to the first and second adsorption holes.

Growing community of inventors

Hwaseong-si, South Korea

Young Min Hur