Patent ID: 11955336
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A method of manufacturing a semiconductor device, comprising:
forming a conductive layer over a substrate having a topography including a plurality of spaced-apart protrusions having upper surfaces,
wherein a first protrusion and a second protrusion are separated by a distance ranging from 5 nm to less than 20 nm, and a depth of a gap between the first protrusion and the second protrusion from the upper surfaces ranges from 10 nm to 300 nm;
forming a spin on carbon layer comprising a spin on carbon composition over the conductive layer,
wherein the spin on carbon composition comprises a polymer including repeating units including functional groups selected from one or more of —OH, —ROH, —R(OH)2, —NH2, —NHR, —NR2, —SH, —RSH, or —R(SH)2, wherein R is a C1-C10 alkyl group, a C3-C10 cycloalkyl group, a C1-C10 hydroxyalkyl group, a C2-C10 alkoxy group, a C2-C10 alkoxy alkyl group, a C2-C10 acetyl group, a C3-C10 acetylalkyl group, a C1-C10 carboxyl group, a C2-C10 alkyl carboxyl group, or a C4-C10 cycloalkyl carboxyl group;
forming a photoresist layer over the spin on carbon layer;
patternwise imaging the photoresist layer;
developing the photoresist layer to form a pattern in the photoresist layer; and
forming a conductive contact over the conductive layer after developing the photoresist layer.