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

Claim 12:
13. An ion beam etching (IBE) system, comprising:
a plasma chamber configured to provide plasma;
a screen grid comprising a screen grid element in contact with the plasma chamber;
an extraction grid comprising an extraction grid element disposed adjacent to and separated from the screen grid element;
an accelerator grid comprising an accelerator grid element disposed adjacent to and separated from the extraction grid element;
a decelerator grid comprising a decelerator grid element disposed adjacent to and separated from the accelerator grid element;
a hole that extends through the screen grid, the extraction grid, the accelerator grid, and the decelerator grid; and
a deflector system comprising at least a first deflector plate and a second deflector plate separated by a gap, wherein the first deflector plate and the second deflector plate are disposed around the hole, wherein the first deflector plate is configured to receive a first deflector voltage, and the second deflector plate is configured to receive a second deflector voltage, and wherein a trajectory of an ion beam through the hole formed by ions extracted from the plasma within the plasma chamber depends on a voltage difference between the first deflector voltage and the second deflector voltage.