发明名称 |
Method and apparatus for processing wafer-shaped articles |
摘要 |
The wet treatment of wafer-shaped articles is improved by utilizing a droplet generator designed to produce a spray of monodisperse droplets. The droplet generator is mounted above a spin chuck, and is moved across a major surface of the wafer-shaped article in a linear or arcuate path. The droplet generator includes a transducer acoustically coupled to its body such that sonic energy reaches a region of the body surrounding the discharge orifices. Each orifice has a width w of at least 1 μm and at most 200 μm and a height h such that a ratio of h to w is not greater than 1. |
申请公布号 |
US9548221(B2) |
申请公布日期 |
2017.01.17 |
申请号 |
US201414198121 |
申请日期 |
2014.03.05 |
申请人 |
LAM RESEARCH AG |
发明人 |
Holsteyns Frank;Lippert Alexander |
分类号 |
H01L21/67 |
主分类号 |
H01L21/67 |
代理机构 |
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代理人 |
|
主权项 |
1. Apparatus for wet treatment of wafer-shaped articles, comprising:
a spin chuck adapted to hold a wafer-shaped article in a predetermined orientation; a droplet generator having a body, an inlet for liquid, at least one orifice for discharging liquid onto a surface of a wafer-shaped article when positioned on the spin chuck, and at least one transducer acoustically coupled to the body such that sonic energy reaches a region of the body surrounding the at least one orifice; wherein the at least one orifice has a width w of at least 1 μm and at most 200 μm and a height h such that a ratio of h to w is not greater than 1; wherein the droplet generator is configured to dispense liquid through the at least one orifice as a spray of monodisperse liquid droplets; a process liquid dispenser positioned relative to the spin chuck and the droplet generator so as to dispense a process liquid onto a same side of a wafer-shaped article as liquid discharged from the droplet generator; and a controller configured to control a spray of monodisperse liquid droplets from the droplet generator in relation to process liquid dispensed from the process liquid dispenser. |
地址 |
Villach AT |