Invention Grant
- Patent Title: Pellicle structure for lithography mask
-
Application No.: US16697138Application Date: 2019-11-26
-
Publication No.: US11175597B2Publication Date: 2021-11-16
- Inventor: Shih-Ming Chang , Chiu-Hsiang Chen , Ru-Gun Liu , Minfeng Chen
- Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
- Applicant Address: TW Hsinchu
- Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
- Current Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
- Current Assignee Address: TW Hsinchu
- Agency: McDermott Will & Emery LLP
- Main IPC: G03F7/20
- IPC: G03F7/20 ; G03F1/64

Abstract:
A lithography patterning system includes a reticle having patterned features, a pellicle having a plurality of openings, a radiation source configured for emitting radiation to reflect and/or project the patterned features, and one or more mirrors configured for guiding reflected and/or projected patterned features onto a wafer. The pellicle is configured to protect the reticle against particles and floating contaminants. The plurality of openings include between 5% and 99.9% of lateral surface area of the pellicle. The pellicle can be attached to the reticle on a side of the patterned features, placed beside an optical path between the radiation source and the wafer, or placed in an optical path between mirrors and the radiation source. The plurality of openings in the pellicle are formed by a plurality of bar shaped materials, or formed in a honey comb structure or a mesh structure.
Public/Granted literature
- US20200174382A1 PELLICLE STRUCTURE FOR LITHOGRAPHY MASK Public/Granted day:2020-06-04
Information query
IPC分类: