Patent ID: 11934107
Assignee: APPLIED MATERIALS, INC.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 9:
10. A method of forming a photoresist layer with different photoresist residual thickness exceeding traditional multi-tone/gray-tone mask features using maskless-based lithography, comprising:
obtaining a critical dimension of the photoresist layer;
inputting a layer thickness and a taper control angle determined based on the critical dimension obtained;
calculating a geometric distance of the photoresist layer using the layer thickness and the taper control angle;
dividing the geometric distance into a plurality of sections;
determining a width of each of the plurality of sections;
determining an amount of the plurality of sections by target photoresist residual thickness; and
determining an amount of dose for each of the plurality of sections.