发明名称 |
Substrate support structure, clamp preparation unit, and lithography system |
摘要 |
A substrate support structure for clamping a substrate by means of a capillary force created by a liquid clamping layer having a lower pressure than its surroundings. The substrate support structure comprises a surface provided with a plurality of substrate supporting elements for holding the substrate, and the surface further comprises portions with different capillary potential for inducing, during clamping, a predetermined capillary flow within the liquid clamping layer. |
申请公布号 |
US8991330(B2) |
申请公布日期 |
2015.03.31 |
申请号 |
US201012709645 |
申请日期 |
2010.02.22 |
申请人 |
Mapper Lithography IP B.V. |
发明人 |
De Jong Hendrik Jan |
分类号 |
B05C13/00;G03B27/42;H01L21/67;B82Y10/00;B82Y40/00;G03B27/58;G03F7/20;H01J37/20;H01J37/317;H01L21/00 |
主分类号 |
B05C13/00 |
代理机构 |
Hoyng Monegier LLP |
代理人 |
Hoyng Monegier LLP ;Owen David P. |
主权项 |
1. A substrate support structure for clamping a substrate by means of a capillary force created by a liquid clamping layer having a lower pressure than its surroundings and having an outer liquid surface, the substrate support structure comprising a surface provided with a plurality of substrate supporting elements for holding the substrate, the surface of the substrate support structure comprising a perimeter being circumscribed by a moat, and further comprising surface portions with different capillary potential for inducing, during clamping, a predetermined capillary flow within the liquid clamping layer to replenish evaporating liquid at locations within a portion of the surface of the substrate support structure with a higher capillary potential;
wherein at least a part of the surface portions with a lower capillary potential takes the form of a channel, wherein the channel extends from a predetermined location along the perimeter, and wherein the channel is arranged to induce a capillary flow from the channel to the periphery of the liquid clamping layer. |
地址 |
Delft NL |