CN111092045A - 一种新型的gpp芯片蓝膜加工方法 - Google Patents

一种新型的gpp芯片蓝膜加工方法 Download PDF

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CN111092045A
CN111092045A CN201911303878.1A CN201911303878A CN111092045A CN 111092045 A CN111092045 A CN 111092045A CN 201911303878 A CN201911303878 A CN 201911303878A CN 111092045 A CN111092045 A CN 111092045A
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周荣
廖智炜
李英男
王林
王毅
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Yangzhou J & V Semiconductor Co ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36Removing material
    • B23K26/38Removing material by boring or cutting
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    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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    • H01L21/70Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/77Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
    • H01L21/78Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices

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Abstract

一种新型的GPP芯片蓝膜加工方法。本发明涉及芯片蓝膜加工,尤其涉及一种新型的GPP芯片蓝膜加工方法。提供了一种提高加工效率和品质、降低应力损伤的一种新型的GPP芯片蓝膜加工方法。本发明预先采用激光半切穿:将晶圆沿蚀刻道半切穿,切割速度100‑300mm/s,切割频率30‑90Khz,切割功率75%±15%,切割深度1/4‑2/3,切割痕宽度20um‑60um。然后将已经半切穿的晶圆沿着切割痕裂成一颗颗散粒。将芯片分离成一颗颗晶粒后贴在蓝膜上。本发明具有提高加工效率和品质、降低应力损伤等特点。

Description

一种新型的GPP芯片蓝膜加工方法
技术领域
本发明涉及芯片蓝膜加工,尤其涉及一种新型的GPP芯片蓝膜加工方法。
背景技术
目前蓝膜芯片普遍的加工工艺是将GPP(GPP中文名称:玻璃钝化)芯片贴蓝膜后使用刀片全切穿成散粒状态,因为刀片的机械应力损伤较大,且GPP芯片使用玻璃做钝化层,其脆性较差,晶粒易受应力作用产生内部损伤,同时晶粒与蓝膜间的致密性导致这种损伤未能及时发现,最终造成终端的晶粒损破,导致产品品质下降。
在半导体市场竞争越演越烈的今天,随着客户端自动抓晶机的逐渐导入和PPH值不断提升,市场上的蓝膜需求量越来越大,而现有刀片切割蓝膜产品的效率低,应力损伤大,故研究一种高效率、高品质、低风险的GPP芯片蓝膜加工工艺对占有市场具有重大的意义。
发明内容
本发明针对以上问题,提供了一种提高加工效率和品质、降低应力损伤的一种新型的GPP芯片蓝膜加工方法。
本发明的技术方案是:一种新型的GPP芯片蓝膜加工方法,包括以下步骤:
1.1)激光半切穿;
将晶圆沿蚀刻道半切穿,切割速度为100-300mm/s,切割频率为30-90Khz,切割功率为75%±15%,切割深度1/4-2/3,切割痕宽度为20um-60um;
1.2)压片,将已经半切穿的晶圆沿着切割痕裂成一颗颗散粒;
在晶片P/N两面涂抹IPA保护溶液,在P/N两面盖上裂片保护膜,使用尼龙滚棒沿着半切穿痕将晶圆裂成一颗颗散粒;
1.3)N面揭裂片保护膜;
将菲林版的N面揭开,使晶粒P面整齐排布在菲林版的P面上,并晾干;
1.4)贴蓝膜;
将晶粒N面贴在蓝膜上,揭开P面菲林版,得到成品激光切割蓝膜出货产品。
将晶圆沿蚀刻道半切穿,切割速度为100mm/s,切割频率为30Khz,切割功率为60%,切割深度为晶圆的1/4,切割痕宽度为60um。
将晶圆沿蚀刻道半切穿,切割速度为200mm/s,切割频率为60Khz,切割功率为75%,切割深度为晶圆的1/2,切割痕宽度为40um。
将晶圆沿蚀刻道半切穿,切割速度为300mm/s,切割频率为90Khz,切割功率为90%,切割深度为晶圆的2/3,切割痕宽度为20um。
步骤1.3)中的晾干时间为10min。
本发明预先采用激光半切穿:将晶圆沿蚀刻道半切穿,切割速度100-300mm/s,切割频率30-90Khz,切割功率75%±15%,切割深度1/4-2/3,切割痕宽度20um-60um。然后将已经半切穿的晶圆沿着切割痕裂成一颗颗散粒。将芯片分离成一颗颗晶粒后贴在蓝膜上。本发明具有提高加工效率和品质、降低应力损伤等特点。
附图说明
图1是步骤1.3时的芯片状态示意图,
图2是步骤1.4时贴蓝膜的状态示意图,
图3是利用本案工艺加工完成后的状态示意图(蓝膜没有损伤),
图4是利用背景技术加工工艺完成后的状态示意图(图中蓝膜有损伤,椭圆圈出区域)。
具体实施方式
本发明如图1-2所示,一种新型的GPP芯片蓝膜加工方法,包括以下步骤:
1.1)激光半切穿;
将晶圆沿蚀刻道半切穿,切割速度为100-300mm/s,切割频率为30-90Khz,切割功率为75%±15%,切割深度1/4-2/3,切割痕宽度为20um-60um;
1.2)压片,将已经半切穿的晶圆沿着切割痕裂成一颗颗散粒;
在晶片P/N两面涂抹IPA保护溶液,在P/N两面盖上裂片保护膜,使用尼龙滚棒沿着半切穿痕将晶圆裂成一颗颗散粒;
1.3)N面揭裂片保护膜;
将菲林版(也可称为裂片保护膜)的N面揭开,使晶粒P面整齐排布在菲林版的P面上,并晾干;(车间洁净度确保在百万级以上,车间温度为15-26℃)
1.4)贴蓝膜;
将晶粒N面贴在蓝膜上,揭开P面菲林版,得到成品激光切割蓝膜出货产品。
步骤1.3)中的晾干时间为10min。
实施例一
将晶圆沿蚀刻道半切穿,切割速度为100mm/s,切割频率为30Khz,切割功率为60%,切割深度为晶圆的1/4,切割痕宽度为60um。
实施例二
将晶圆沿蚀刻道半切穿,切割速度为200mm/s,切割频率为60Khz,切割功率为75%,切割深度为晶圆的1/2,切割痕宽度为40um。
实施例三
将晶圆沿蚀刻道半切穿,切割速度为300mm/s,切割频率为90Khz,切割功率为90%,切割深度为晶圆的2/3,切割痕宽度为20um。
Figure DEST_PATH_IMAGE001
原切割工艺中,刀切是带着蓝膜一起切割,蓝膜的厚度是0.07mm,晶片厚度是0.3mm,所以蓝膜切割基本在业内很难避免,加工报废率高,通过本案工艺,利用激光切割成散粒再贴膜,蓝膜没有损伤,提供了产品的合格率。

Claims (5)

1.一种新型的GPP芯片蓝膜加工方法,其特征在于,包括以下步骤:
1.1)激光半切穿;
将晶圆沿蚀刻道半切穿,切割速度为100-300mm/s,切割频率为30-90Khz,切割功率为75%±15%,切割深度1/4-2/3,切割痕宽度为20um-60um;
1.2)压片,将已经半切穿的晶圆沿着切割痕裂成一颗颗散粒;
在晶片P/N两面涂抹IPA保护溶液,在P/N两面盖上裂片保护膜,使用尼龙滚棒沿着半切穿痕将晶圆裂成一颗颗散粒;
1.3)N面揭裂片保护膜;
将菲林版的N面揭开,使晶粒P面整齐排布在菲林版的P面上,并晾干;
1.4)贴蓝膜;
将晶粒N面贴在蓝膜上,揭开P面菲林版,得到成品激光切割蓝膜出货产品。
2.根据权利要求1所述的一种新型的GPP芯片蓝膜加工方法,其特征在于,将晶圆沿蚀刻道半切穿,切割速度为100mm/s,切割频率为30Khz,切割功率为60%,切割深度为晶圆的1/4,切割痕宽度为60um。
3.根据权利要求1所述的一种新型的GPP芯片蓝膜加工方法,其特征在于,将晶圆沿蚀刻道半切穿,切割速度为200mm/s,切割频率为60Khz,切割功率为75%,切割深度为晶圆的1/2,切割痕宽度为40um。
4.根据权利要求1所述的一种新型的GPP芯片蓝膜加工方法,其特征在于,将晶圆沿蚀刻道半切穿,切割速度为300mm/s,切割频率为90Khz,切割功率为90%,切割深度为晶圆的2/3,切割痕宽度为20um。
5.根据权利要求1所述的一种新型的GPP芯片蓝膜加工方法,其特征在于,步骤1.3)中的晾干时间为10min。
CN201911303878.1A 2019-12-17 2019-12-17 一种新型的gpp芯片蓝膜加工方法 Pending CN111092045A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113299594A (zh) * 2021-05-25 2021-08-24 江西信芯半导体有限公司 Tvs芯片贴蓝膜后加工方法

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Publication number Priority date Publication date Assignee Title
CN102130237A (zh) * 2010-12-29 2011-07-20 映瑞光电科技(上海)有限公司 蓝宝石衬底led芯片的切割方法
CN103441103A (zh) * 2013-08-29 2013-12-11 华进半导体封装先导技术研发中心有限公司 晶圆切割方法
CN104658888A (zh) * 2015-01-21 2015-05-27 安徽安芯电子科技有限公司 一种晶圆处理工艺及晶圆处理装置
CN106816404A (zh) * 2017-01-19 2017-06-09 吉林麦吉柯半导体有限公司 晶圆的扩膜取粒方法及晶圆的生产方法

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
CN102130237A (zh) * 2010-12-29 2011-07-20 映瑞光电科技(上海)有限公司 蓝宝石衬底led芯片的切割方法
CN103441103A (zh) * 2013-08-29 2013-12-11 华进半导体封装先导技术研发中心有限公司 晶圆切割方法
CN104658888A (zh) * 2015-01-21 2015-05-27 安徽安芯电子科技有限公司 一种晶圆处理工艺及晶圆处理装置
CN106816404A (zh) * 2017-01-19 2017-06-09 吉林麦吉柯半导体有限公司 晶圆的扩膜取粒方法及晶圆的生产方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113299594A (zh) * 2021-05-25 2021-08-24 江西信芯半导体有限公司 Tvs芯片贴蓝膜后加工方法
CN113299594B (zh) * 2021-05-25 2022-12-30 江西信芯半导体有限公司 Tvs芯片贴蓝膜后加工方法

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