Patent ID: 11961706
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. The IBE system of claim 13, further comprising:
an other screen grid element of the screen grid, an other extraction grid element of the extraction grid, an other accelerator grid element of the accelerator grid, and an other decelerator grid element of the decelerator grid;
an other hole extends through the other screen grid element, the other extraction grid element, the other accelerator grid element, and the other decelerator grid element;
a third deflector plate of the deflector system and a fourth deflector plate of the deflector system separated by an other gap, wherein the third deflector plate and the fourth deflector plate are disposed around the other hole, wherein an other ion beam from an ion source within the plasma chamber goes through the other hole; and
a rotating fixture configured to hold a wafer with a tilt angle, wherein the ion beam has a first incidence distance from the ion source to the wafer, the other ion beam has a second incidence distance from the ion source to the wafer, and the second incidence distance is different from the first incidence distance.