Patent ID: 11894299
Assignee: TAIWAN SEMICONDUCTOR CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for forming a semiconductor device comprising:
forming a first insulating layer over a substrate, wherein the first insulating layer is a photosensitive material;
exposing a first portion and a second portion of the first insulating layer in a first exposure process;
exposing a third portion of the first insulating layer in a second exposure process, wherein the third portion does not overlap the first portion and the second portion;
after exposing the first portion, the second portion, and the third portion, removing the first portion, the second portion, and the third portion to form a first recess, a second recess, and a third recess, respectively, wherein the third recess has a different depth than the first recess and the second recess;
forming a conductive material in the first recess, the second recess, and the third recess to form a first conductive line in the first recess, a second conductive line in the second recess, and a third conductive line in the third recess; and
depositing a second insulating layer over the first insulating layer.