Patent ID: 9017763
Filing Date: 2015-04-28
Classification: C23C,H01L

Abstract:
1. A method for forming films respectively on a stack of wafers, every adjacent two wafers in the stack of wafers having therebetween a respective wafer spacing, each wafer in the stack of wafers having a top working surface and a bottom working surface, the method comprising: providing an injector having a respective hole, an adjusting device, a respective first wafer having a first top working surface, and a respective second wafer having a second bottom working surface, wherein: adjusting a vertical position of the respective hole by the adjusting device to cause the distance to be larger than one half of the wafer spacing, wherein a ratio of the distance to the wafer spacing is larger than or equal to ¾ and less than 1; and supplying a working material from the respective hole to form the films on the first top working surface and the second bottom working surface.