公开(公告)号：US20150273490A1

公开(公告)日：2015-10-01

申请号：US14726067

申请日：2015-05-29

Applicant: Applied Materials, Inc.

Inventor： Jozef KUDELA ,  Jonghoon BAEK ,  John M. WHITE ,  Robin TINER ,  Suhail ANWAR ,  Gaku FURUTA

IPC: B05B1/18

CPC classification number: B05B1/185 ,  C23C16/45565 ,  C23C16/509 ,  C23C16/5096 ,  H01J37/3244 ,  H01J37/32532 ,  H01J37/32623 ,  H01J37/32651 ,  Y10T137/6851

Abstract: Embodiments of the invention generally include shield frame assembly for use with a showerhead assembly, and a showerhead assembly having a shield frame assembly that includes an insulator that tightly fits around the perimeter of a showerhead in a vacuum processing chamber. In one embodiment, a showerhead assembly includes a gas distribution plate and a multi-piece frame assembly that circumscribes a perimeter edge of the gas distribution plate. The multi-piece frame assembly allows for expansion of the gas distribution plate without creating gaps which may lead to arcing. In other embodiments, the insulator is positioned to be have the electric fields concentrated at the perimeter of the gas distribution plate located therein, thereby reducing arcing potential.

Abstract translation: 本发明的实施例通常包括用于喷头组件的屏蔽框架组件和具有屏蔽框架组件的喷头组件，所述屏蔽框架组件包括紧密配合在真空处理室中的喷头周边周围的绝缘体。 在一个实施例中，喷头组件包括气体分配板和环绕气体分布板的周边边缘的多片框架组件。 多件式框架组件允许气体分配板的膨胀而不产生可能导致电弧的间隙。 在其它实施例中，绝缘体被定位成具有集中在位于其中的气体分配板的周边的电场，从而减少电弧电势。