KR102203870B1 - 임시고정용 점착시트 및 이를 사용한 반도체 장치의 제조 방법 - Google Patents
임시고정용 점착시트 및 이를 사용한 반도체 장치의 제조 방법 Download PDFInfo
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Abstract
Description
| 구분 | 기재필름(연신율(%)) | 점착층 |
| 실시예 1 | 폴리프로필렌(420) | 제조예 1(A-1) |
| 실시예 2 | 폴리부틸렌테레프탈레이트(792) | 제조예 2(A-2) |
| 실시예 3 | 폴리프로필렌(420) | 제조예 3(A-3) |
| 비교예 1 | 폴리프로필렌(420) | 비교 제조예 1(B-1) |
| 비교예 2 | 폴리프로필렌(420) | 비교 제조예 2(B-2) |
| 비교예 3 | 폴리에틸렌나프탈레이트(126) | 제조예 1(A-1) |
| 구분 | R (%) | 점착력(gf/25mm) 평가 (열처리 후) |
픽업 성공율 (%) | |
| 광조사 전 | 광조사 후 | |||
| 실시예 1 | 6.63 | 208 | 13.8 | 100 |
| 실시예 2 | 7.92 | 331 | 26.2 | 100 |
| 실시예 3 | 5.10 | 298 | 15.2 | 100 |
| 비교예 1 | 69.44 | 180 | 125 | 5 |
| 비교예 2 | 40.16 | 254 | 102 | 13 |
| 비교예 3 | 15.81 | 203 | 32.1 | 0 |
100: 기재필름
200: 점착층
300: 이형필름
Claims (11)
- 23℃에서 300mm/min의 속도로 인장 시 MD(Machine Direction) 방향의 연신율이 200% 내지 800%인 기재필름; 및
광반응성 작용기를 갖는 바인더 수지 및 300nm 내지 500nm의 파장에서 활성을 갖는 광개시제를 포함한 점착층을 포함하고,
상기 바인더 수지는 벤조일페닐기를 포함한 제1 (메타)아크릴레이트계 반복 단위와 히드록시기, 카르복시기 및 질소 함유 작용기로 이루어진 군에서 선택된 1종 이상의 작용기를 포함한 제2 (메타)아크릴레이트계 반복 단위를 포함하고,
상기 제2 (메타)아크릴레이트계 반복 단위의 20 내지 95몰%는 광중합성 (메타)아크릴레이트계 측쇄를 포함하고,
상기 점착층을 90℃ 내지 150℃의 온도에서 열처리하여 측정한 초기 점착력(A1) 대비 상기 열처리된 점착층에 광조사하고 측정한 점착력(A2)간의 비율이 0% 초과 30% 이하인, 임시고정용 점착시트.
- 제1항에 있어서,
상기 점착층을 90℃ 내지 150℃의 온도에서 열처리하여 측정한 초기 점착력(A1) 대비 상기 열처리된 점착층에 광조사하고 측정한 점착력(A2)간의 비율(R)은 하기 일반식 1로 정의되는, 임시공정용 점착시트:
[일반식 1]
R(%) = A2' * 100 / A1'
상기 일반식 1에서, A1'은 100℃에서 3시간 동안 열처리한 이후에 상기 점착층의 점착력이고,
A2'는 상기 열처리된 점착층에 200nm 내지 500nm 영역의 복합 파장의 자외선을 100mJ/cm2 내지 1000mJ/cm2 광량으로 조사한 이후 측정한 점착층의 점착력이다.
- 제1항에 있어서,
상기 기재필름은 300nm 내지 500nm 파장의 투과율이 50% 내지 100%인, 임시고정용 점착시트.
- 제1항에 있어서,
상기 기재필름은 폴리올레핀, 폴리에스테르, 폴리카보네이트, 폴리염화비닐, 폴리테트라플루오로에틸렌, 폴리부텐, 폴리부타디엔, 에틸렌-초산비닐 공중합체, 에틸렌-프로필렌 공중합체, 에틸렌-알킬아크릴레이트 공중합체, 및 폴리부틸렌테레프탈레이트로 이루어진 군에서 선택되는 1종 이상의 고분자 화합물을 포함하는, 임시고정용 점착시트.
- 삭제
- 제1항에 있어서,
상기 광개시제는, 비스(2,4,6-트리메틸벤조일)-페닐-포스핀옥사이드, 1-하이드록시-사이클로헥실-페닐-케톤, 2,2-디메톡시-1,2-디페닐에탄-1-온, 2-메틸-1[4-(메틸티오)페닐]-2-모르폴리노프로판-1-온, 옥시-페닐-아세틱애씨드 2-[2-옥소-2-페닐-아세톡시-에톡시]-에틸에스테르, 옥시-페닐-아세틱애씨드 2-[2-하이드록시-에톡시]-에틸에스테르, 2-벤질-2-디메틸아미노-1-(4-모르폴리노페닐)-부탄-1-온, 2,4,6-트리메틸벤조일-디페닐-포스핀옥사이드, 및 티오잔톤으로 이루어진 군에서 선택된 1종 이상인, 임시고정용 점착시트.
- 제1항에 있어서,
반도체 공정의 보호 필름, 캐리어 필름 또는 픽업 공정용 필름으로 사용되는, 임시고정용 점착시트.
- 제1항에 있어서,
상기 기재필름이 형성되지 않은 점착층의 일면에 이형 필름을 더 포함하는, 임시고정용 점착시트
- 제1항에 있어서,
상기 기재필름의 일면에 점착층이 형성되고,
상기 점착층의 기재필름이 형성되지 않은 면에 이형 필름을 더 포함하는, 임시고정용 점착시트.
- 제1항에 있어서,
상기 점착층은 2개의 층으로 형성되고,
상기 기재필름의 양면에 점착층이 각각 형성되고,
상기 점착층의 기재필름이 형성되지 않은 면에 이형 필름을 각각 더 포함하는, 임시고정용 점착시트.
- 제1항에 따른 임시고정용 점착시트의 점착층을 반도체 장치의 소정 부분에 부착하는 단계;
상기 점착시트가 부착된 반도체 장치에 대하여, 소정의 공정을 거치는 단계;
상기 소정의 공정을 거친 이후, 상기 임시고정용 점착시트의 기재필름에 대하여 자외선을 조사하는 단계; 및
상기 임시고정용 점착시트를 반도체 장치로부터 탈착하는 단계;를 포함하는, 반도체 장치의 제조 방법.
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| JP7696246B2 (ja) * | 2021-07-26 | 2025-06-20 | 日東電工株式会社 | 光硬化性粘着シート |
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