Invention Grant
- Patent Title: Reticle in an apparatus for extreme ultraviolet exposure
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Application No.: US17028049Application Date: 2020-09-22
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Publication No.: US11409193B2Publication Date: 2022-08-09
- Inventor: Mankyu Kang , Hoon Kim , Jongkeun Oh , Minho Kim , Heebom Kim
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Suwon-si
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-si
- Agency: Lee IP Law, P.C.
- Priority: KR10-2020-0037307 20200327
- Main IPC: G03F1/24
- IPC: G03F1/24 ; G03F1/22

Abstract:
A reticle for an apparatus for EUV exposure and a method of manufacturing a reticle, the reticle including a substrate including an edge region and a main region; a multi-layer structure on the main region and the edge region, a sidewall of the multi-layer structure overlying the edge region; a capping layer covering an upper surface and the sidewall of the multi-layer structure and at least a portion of the edge region of the substrate; and an absorber layer on the capping layer, the absorber layer covering an entire upper surface of the capping layer on the edge region of the substrate, wherein a stacked structure of the capping layer and the absorber layer is on an upper surface of the edge region of the substrate, and a sidewall of the stacked structure of the capping layer and the absorber layer is perpendicular to an upper surface of the substrate.
Public/Granted literature
- US20210302825A1 RETICLE IN AN APPARATUS FOR EXTREME ULTRAVIOLET EXPOSURE Public/Granted day:2021-09-30
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