KR100734079B1 - 리소그라피 공정에서의 오버레이 측정 방법 - Google Patents
리소그라피 공정에서의 오버레이 측정 방법 Download PDFInfo
- Publication number
- KR100734079B1 KR100734079B1 KR1020010084301A KR20010084301A KR100734079B1 KR 100734079 B1 KR100734079 B1 KR 100734079B1 KR 1020010084301 A KR1020010084301 A KR 1020010084301A KR 20010084301 A KR20010084301 A KR 20010084301A KR 100734079 B1 KR100734079 B1 KR 100734079B1
- Authority
- KR
- South Korea
- Prior art keywords
- mother
- overlay
- measured
- overlay measurement
- son
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001459 lithography Methods 0.000 title abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 20
- 238000000691 measurement method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/70605—Workpiece metrology
- G03F7/70616—Monitoring the printed patterns
- G03F7/70633—Overlay, i.e. relative alignment between patterns printed by separate exposures in different layers, or in the same layer in multiple exposures or stitching
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
Description
Claims (2)
- 오버레이 패턴들의 각 어미자들이 형성된 웨이퍼의 기준점을 설정하고, 이를 이용해서 각 어미자의 위치를 측정하는 단계;상기 측정된 어미자의 위치 값을 이미지로 데이터화시키는 단계;상기 어미자 상부에 아들자를 형성하는 단계;상기 어미자의 이미지 데이터를 독출한 상태에서 상기 어미자의 이미지 상에 아들자를 위치시키는 단계; 및상기 어미자와 아들자의 에지를 측정하고, 측정된 각 에지값의 중앙 위치를 비교하는 단계를 포함하는 것을 특징으로 하는 오버레이 측정방법.
- 제 1 항에 있어서, 상기 아들자는 인접 영역과 단차가 없도록 형성하는 것을 특징으로 하는 오버레이 측정방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010084301A KR100734079B1 (ko) | 2001-12-24 | 2001-12-24 | 리소그라피 공정에서의 오버레이 측정 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010084301A KR100734079B1 (ko) | 2001-12-24 | 2001-12-24 | 리소그라피 공정에서의 오버레이 측정 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030054177A KR20030054177A (ko) | 2003-07-02 |
KR100734079B1 true KR100734079B1 (ko) | 2007-07-02 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020010084301A KR100734079B1 (ko) | 2001-12-24 | 2001-12-24 | 리소그라피 공정에서의 오버레이 측정 방법 |
Country Status (1)
Country | Link |
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KR (1) | KR100734079B1 (ko) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020017768A (ko) * | 2000-08-31 | 2002-03-07 | 박종섭 | 오버레이 측정 방법 |
KR20020072044A (ko) * | 2001-03-08 | 2002-09-14 | 삼성전자 주식회사 | 오버레이 키 및 그의 제조방법과 이를 이용한 오버레이측정방법 |
-
2001
- 2001-12-24 KR KR1020010084301A patent/KR100734079B1/ko active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020017768A (ko) * | 2000-08-31 | 2002-03-07 | 박종섭 | 오버레이 측정 방법 |
KR20020072044A (ko) * | 2001-03-08 | 2002-09-14 | 삼성전자 주식회사 | 오버레이 키 및 그의 제조방법과 이를 이용한 오버레이측정방법 |
Also Published As
Publication number | Publication date |
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KR20030054177A (ko) | 2003-07-02 |
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