Patent ID: 6124146
Filing Date: 2000-09-26
Classification: H01L

Abstract:
A method of depositing a material to a semiconductor device, the semiconductor device including a first mesa structure having a first surface, a second mesa structure having a second surface and a valley separating the first mesa structure from the second mesa structure, the valley having a third surface defining a width, the method comprising the steps of:depositing material from a first direction onto the first and second surfaces without substantially depositing any of the material onto the third surface;depositing material from a second direction onto the first and second surfaces without substantially depositing any of the material onto the third surface, wherein deposition of material from the first and second directions forms a first lip and a second lip on the respective first and second mesa structures overlying the valley and defining a space therebetween, the space being less than the width of the valley; anddepositing material to the device from a third direction in substantial opposition to the device, the space operating to guide discrete material deposition in the valley to form a discrete feature in the valley.