Patent ID: 11869725
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method of forming a stacked capacitor, comprising:
forming a capacitor stack by deposition, wherein the capacitor stack includes at least two dielectric layers and at least three conductive plates including a base plate, and the base plate has a first surface and a second opposing surface;
coating a photoresist film on or over the capacitor stack;
patterning the photoresist film into a patterned photoresist mask having at least one sloped side with respect to the second surface of the base plate, by introducing light through a gray-scale mask, to the photoresist film;
forming at least one sloped contact side of the capacitor stack and with respect to the second surface of the base plate by using etching and the same patterned photoresist mask; and
forming a plurality of vias through an insulating layer overlying the capacitor stack, including a first via that connects to a portion of a first of the conductive plates exposed at the sloped side and a second via that connects to a portion of the second of the conductive plates exposed at the sloped side.