JP5740490B2 - ウエハ加工フィルム用粘着剤組成物 - Google Patents
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Description
架橋密度=B/A×100 (1)
エチルヘキシルアクリレート(EHA)65重量部、エチルアクリレート(EA)15重量部、メチルアクリレート(MA)17.5重量部及びヒドロキシエチルアクリレート(HEA)2.5重量部を溶剤に希釈させ、適正条件で重合させて、ガラス転移温度が−36.2℃で、分子量が80万で、分子量分布(PDI)が3.12で、固形分含量が20%のアクリル重合体を製造した。
製造されたアクリル重合体100重量部に対して、エチルアセテートに10重量%の濃度に希釈されたノボラック2−ジアゾ−1−ナフトール−5−スルホネート(MIPHOTOPAC100,ミウォン社(製))1重量部及びイソシアネート系架橋剤0.5重量部を添加し、300rpm〜400rpmの条件で1時間配合してコーティング液を製造した。製造されたコーティング液を、厚さが38μmのPET離型フィルム上に、乾燥後の厚さが10μmになるようにコーティングし、110℃の温度で3分間乾燥した。次いで、乾燥されたコーティング層を厚さが80μmのPETフィルムに転写し、40℃で24時間熟成させて、ウエハ加工フィルムを製造した。
コーティング液の製造時に成分を下記表1、2及び3のように変更したことを除いては、実施例1と同様の方式でウエハ加工フィルムを製造した。
実施例または比較例で製造されたウエハ加工フィルムを、幅25mm、長さ10cmになるように裁断して試片を製造した。製造された試片を、表面にポリイミド層が1μmの厚さに形成されているウエハに常温でラミネートした。ラミネートされた状態を20分間維持し、引張試験機を使用して300m/minの剥離速度及び90度の剥離角度でウエハ加工フィルムを剥離しながら剥離力を測定した。
UV照射前剥離力の測定時と同様の試片の粘着剤層に、水銀ランプを使用してUV−A領域の紫外線を15秒間照射(100mW/cm2)し、UV照射前剥離力の測定時と同様の方式で剥離強度を測定した。
Claims (16)
- アクリル重合体及び光感応性ガス発生剤を含むウエハ加工フィルム用粘着剤組成物であって、
前記光感応性ガス発生剤が、2−ジアゾナフトールスルホン酸または2−ジアゾナフトールスルホン酸のエステルであり、
前記アクリル重合体には、下記式(1)で表される共重合性単量体が重合された形態で含まれるウエハ加工フィルム用粘着剤組成物。
(式中、R 1 〜R 3 はそれぞれ独立して水素又はアルキルを表し、R 4 はシアノ;アルキルで置換または非置換されたフェニル;アセチルオキシ;又はCOR 5 を表し、このときR 5 はアルキル又はアルコキシアルキルで置換または非置換されたアミノ又はグリシジルオキシを表す。また、R 1 〜R 5 の定義において、アルキル又はアルコキシは、炭素数1〜8のアルキル又はアルコキシを示す。) - 前記アクリル重合体は、ガラス転移温度が−50℃〜15℃である請求項1に記載のウエハ加工フィルム用粘着剤組成物。
- 前記アクリル重合体は、重量平均分子量が5万〜100万である請求項1に記載のウエハ加工フィルム用粘着剤組成物。
- 前記アクリル重合体は、(メタ)アクリル酸エステル単量体90重量部〜99.9重量部、及び架橋性官能基を有する共重合性単量体0.1重量部〜10重量部が重合された形態で含む請求項1に記載のウエハ加工フィルム用粘着剤組成物。
- 前記架橋性官能基が、ヒドロキシ基、カルボキシル基、アミド基、グリシジル基またはイソシアネート基である請求項4に記載のウエハ加工フィルム用粘着剤組成物。
- 前記光感応性ガス発生剤が、2−ジアゾ−1−ナフトール−5−スルホン酸、ノボラック2−ジアゾ−1−ナフトール−5−スルホネート、2,3,4−トリヒドロキシベンゾフェノン2−ジアゾ−1−ナフトール−5−スルホネート及び2,3,4,4’−テトラヒドロキシベンゾフェノン2−ジアゾ−1−ナフトール−5−スルホネートからなる群から選ばれる一つ以上である請求項1に記載のウエハ加工フィルム用粘着剤組成物。
- 前記光感応性ガス発生剤が、アクリル重合体100重量部に対して、0.5重量部〜30重量部で含まれる請求項1に記載のウエハ加工フィルム用粘着剤組成物。
- 多官能性架橋剤をさらに含む請求項1に記載のウエハ加工フィルム用粘着剤組成物。
- 基材、及び前記基材の一面または両面に形成され、アクリル重合体及び光感応性ガス発生剤を含む粘着剤層を有するウエハ加工フィルムであって、
前記光感応性ガス発生剤が、2−ジアゾナフトールスルホン酸または2−ジアゾナフトールスルホン酸のエステルであり、
前記アクリル重合体には、下記式(2)で表される共重合性単量体が重合された形態で含まれるウエハ加工フィルム。
(式中、R 1 〜R 3 はそれぞれ独立して水素又はアルキルを表し、R 4 はシアノ;アルキルで置換または非置換されたフェニル;アセチルオキシ;又はCOR 5 を表し、このときR 5 はアルキル又はアルコキシアルキルで置換または非置換されたアミノ又はグリシジルオキシを表す。また、R 1 〜R 5 の定義において、アルキル又はアルコキシは、炭素数1〜8のアルキル又はアルコキシを示す。) - 前記基材は、厚さが10μm〜500μmである請求項9に記載のウエハ加工フィルム。
- 前記粘着剤層は、厚さが0.5μm〜50μmである請求項9に記載のウエハ加工フィルム。
- 前記粘着剤層上に形成された離型フィルムをさらに含む請求項9に記載のウエハ加工フィルム。
- 半導体ウエハに請求項9に記載のウエハ加工フィルムを付着する段階と、ウエハ加工フィルムが付着された半導体ウエハを加工する段階と、ウエハ加工フィルムに紫外線を照射する段階を含む半導体ウエハ加工方法。
- 前記半導体ウエハ加工段階がダイシング段階またはバックグラインド段階である請求項13に記載の半導体ウエハ加工方法。
- 前記紫外線照射段階において波長が200nm〜400nmで、光量が5mW/cm2〜200mW/cm2の紫外線を5秒〜60秒間照射する請求項13に記載の半導体ウエハ加工方法。
- 前記紫外線の照射後に半導体ウエハをウエハ加工用フィルムから剥離する段階をさらに行う請求項13に記載の半導体ウエハ加工方法。
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| JP6098726B2 (ja) * | 2013-08-30 | 2017-03-22 | Jsr株式会社 | 被接着物回収方法、被接着物回収装置、ガス発生膜および樹脂組成物 |
| WO2015102342A1 (ko) * | 2014-01-03 | 2015-07-09 | 주식회사 엘지화학 | 다이싱 필름 및 다이싱 다이본딩 필름 |
| KR101722137B1 (ko) | 2014-01-03 | 2017-03-31 | 주식회사 엘지화학 | 다이싱 필름 및 다이싱 다이본딩 필름 |
| WO2015152158A1 (ja) * | 2014-03-31 | 2015-10-08 | 株式会社Joled | 積層体および積層体の剥離方法ならびに可撓性デバイスの製造方法 |
| CN104559852B (zh) * | 2014-12-31 | 2018-02-27 | 深圳市化讯半导体材料有限公司 | 一种用于薄晶圆加工的临时键合胶及其制备方法 |
| CN104804682B (zh) * | 2015-04-16 | 2017-05-24 | 深圳市化讯半导体材料有限公司 | 晶圆减薄的临时键合胶、其制备方法、键合及解键合方法 |
| JP6600249B2 (ja) * | 2015-12-21 | 2019-10-30 | 積水化学工業株式会社 | 粘着テープ及び粘着テープの剥離方法 |
| JP7062655B2 (ja) * | 2017-07-03 | 2022-05-06 | リンテック株式会社 | ステルスダイシング用粘着シートおよび半導体装置の製造方法 |
| KR102478993B1 (ko) * | 2017-07-03 | 2022-12-19 | 린텍 가부시키가이샤 | 스텔스 다이싱용 점착 시트 및 반도체 장치의 제조 방법 |
| CN110832620B (zh) * | 2017-07-03 | 2024-01-02 | 琳得科株式会社 | 隐形切割用粘着片及半导体装置的制造方法 |
| CN110753993B (zh) * | 2017-07-03 | 2023-12-01 | 琳得科株式会社 | 隐形切割用粘着片及半导体装置的制造方法 |
| CN110429058B (zh) * | 2019-07-29 | 2022-05-24 | 日月新半导体(苏州)有限公司 | 集成电路制程用胶带及晶圆背面刷胶工艺 |
| CN114316886B (zh) * | 2020-09-29 | 2023-12-22 | 上海飞凯材料科技股份有限公司 | 一种可激光拆解的光敏胶及其应用和应用方法 |
| WO2024128279A1 (ja) * | 2022-12-15 | 2024-06-20 | 日産化学株式会社 | 光照射剥離用の剥離剤組成物、積層体、及び加工された半導体基板又は電子デバイス層の製造方法 |
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| US9153471B2 (en) | 2015-10-06 |
| TWI585179B (zh) | 2017-06-01 |
| CN104204126B (zh) | 2017-04-12 |
| KR20120104450A (ko) | 2012-09-21 |
| WO2012121547A3 (ko) | 2012-11-15 |
| CN104204126A (zh) | 2014-12-10 |
| TW201237136A (en) | 2012-09-16 |
| US20130295747A1 (en) | 2013-11-07 |
| WO2012121547A2 (ko) | 2012-09-13 |
| EP2684928B1 (en) | 2018-09-12 |
| JP2014509450A (ja) | 2014-04-17 |
| EP2684928A2 (en) | 2014-01-15 |
| EP2684928A4 (en) | 2014-10-15 |
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