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    • 9. 发明授权
    • Electrostatic chuck and method for fabricating the same
    • 静电吸盘及其制造方法
    • US06175485B1
    • 2001-01-16
    • US08684113
    • 1996-07-19
    • Padmanabhan KrishnarajBrian LueRamkishan Rao LingampalliShun Jackson Wu
    • Padmanabhan KrishnarajBrian LueRamkishan Rao LingampalliShun Jackson Wu
    • H02N1300
    • H02N13/00Y10T279/23
    • The present invention provides an electrostatic chuck having a dielectric layer with improved porosity and electrical properties, and a method for fabricating the dielectric layer and applying the layer to a pedestal to form a portion of an electrostatic chuck. The dielectric layer is formed by a detonation gun process which includes igniting a fuel gas mixture to form a detonation wave and propelling aluminum oxide powder onto the pedestal at high speeds. The dielectric layer has a porosity of less than 1 percent of its total volume, which improves the electrical properties of the chuck, such as its dielectric strength and the dielectric constant. In addition, the low porosity decreases the adsorption of moisture and other gases into the dielectric layer, which further enhances the electrical properties of the chuck.
    • 本发明提供一种静电卡盘,其具有提高孔隙率和电性能的电介质层,以及用于制造电介质层并将该层施加到基座以形成静电卡盘的一部分的方法。 电介质层通过爆震枪工艺形成,其中包括点燃燃料气体混合物以形成爆震波,并将氧化铝粉末以高速推进到基座上。 电介质层的孔隙率小于其总体积的1%,这改善了卡盘的电性能,例如其介电强度和介电常数。 此外,低孔隙率降低了水分和其他气体吸附到电介质层中,这进一步增强了卡盘的电性能。