Patent ID: 9396975
Filing Date: 2016-07-19
CPC Classification: H01L

Claim Text:
1. A liquid treatment apparatus comprising: a substrate retaining unit comprising a retaining member configured to hold a peripheral edge of a substrate to retain the substrate horizontally; a rotational driving unit configured to rotate the substrate retaining unit; and a nozzle disposed below a lower surface of the substrate retained by the substrate retaining unit, the nozzle comprising a plurality of first ejection ports provided to eject a chemical liquid towards the lower surface of the substrate retained by the substrate retaining unit and a plurality of second ejection ports provided to eject a rinsing fluid towards the lower surface of the substrate retained by the substrate retaining unit; wherein: the nozzle comprises a first portion extending from a position opposing to a peripheral portion of the substrate towards a position opposing to a central portion of the substrate retained by the substrate retaining unit, the plurality of first ejection ports are arranged between a position opposing to a peripheral portion of the substrate towards a position opposing to a central portion of the substrate retained by the substrate retaining unit, and at least part of the plurality of first ejection ports are arranged in the first portion; the nozzle comprises a second portion extending from a position opposing to a peripheral portion of the substrate towards a position opposing to a central portion of the substrate retained by the substrate retaining unit, the plurality of second ejection ports are arranged between a position opposing to a peripheral portion of the substrate towards a position opposing to a central portion of the substrate retained by the substrate retaining unit, and at least part of the plurality of second ejection ports are arranged in the second portion; the first portion and the second portion are arranged to form a V-shaped figure; and the first portion is disposed at an angular position advanced through an angle from the second portion in a rotating direction of the substrate rotated by the rotational driving unit.