TWI453905B - Manufacturing method of semiconductor device - Google Patents
Manufacturing method of semiconductor device Download PDFInfo
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- TWI453905B TWI453905B TW100119277A TW100119277A TWI453905B TW I453905 B TWI453905 B TW I453905B TW 100119277 A TW100119277 A TW 100119277A TW 100119277 A TW100119277 A TW 100119277A TW I453905 B TWI453905 B TW I453905B
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- 239000004065 semiconductor Substances 0.000 title claims description 103
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000000758 substrate Substances 0.000 claims description 110
- 230000001681 protective effect Effects 0.000 claims description 31
- 239000000126 substance Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000005229 chemical vapour deposition Methods 0.000 claims description 8
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 238000004528 spin coating Methods 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical group [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910001936 tantalum oxide Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 238000005468 ion implantation Methods 0.000 claims description 2
- 229910052691 Erbium Inorganic materials 0.000 claims 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 25
- 239000011229 interlayer Substances 0.000 description 17
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 10
- 229910052732 germanium Inorganic materials 0.000 description 9
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000009966 trimming Methods 0.000 description 8
- 238000005498 polishing Methods 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- 229910052707 ruthenium Inorganic materials 0.000 description 3
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- WJMXTYZCTXTFJM-UHFFFAOYSA-N 1,1,1,2-tetraethoxydecane Chemical compound C(C)OC(C(OCC)(OCC)OCC)CCCCCCCC WJMXTYZCTXTFJM-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- NPOJQCVWMSKXDN-UHFFFAOYSA-N Dacthal Chemical compound COC(=O)C1=C(Cl)C(Cl)=C(C(=O)OC)C(Cl)=C1Cl NPOJQCVWMSKXDN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- HIVGXUNKSAJJDN-UHFFFAOYSA-N [Si].[P] Chemical compound [Si].[P] HIVGXUNKSAJJDN-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- CWAFVXWRGIEBPL-UHFFFAOYSA-N ethoxysilane Chemical compound CCO[SiH3] CWAFVXWRGIEBPL-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14625—Optical elements or arrangements associated with the device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14632—Wafer-level processed structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/1464—Back illuminated imager structures
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Formation Of Insulating Films (AREA)
Description
本實施形態係關於一般之半導體裝置之製造方法、半導體裝置及照相機模組。
本專利申請案係享受2010年6月28日申請之日本專利申請案2010-145886之優先權之利益,該日本專利申請案之全內容以引用文字之方式併入本文中。
半導體元件之微細化、高積體化瞬息萬變。與之相伴,基板端部之積層膜剝離或以碎屑為原因之微小之異物或缺陷之產生,變得對成品率有較大影響。為減低該影響,一般進行有以刀具等研磨基板端部之斜面研磨等。
然而,進行斜面研磨等之研磨時,存在使用以形成電路之銅或鋁之金屬從研磨後之部份露出之可能性,而有引起金屬污染之可能。特別近年來受到注目之背照式CMOS(Complementary Metal Oxide Semiconductor互補金屬氧化物半導體)圖像感應器等,由於將包含銅或鋁配線之元件基板與支持基板之兩片基板貼合,貼合後化學性機械性研磨元件基板之背面,故基板端部之污染遍及基板全體之可能性很高。
若根據實施形態,半導體裝置之製造方法係包含:研削半導體基板之周緣部之研削步驟;及於包含藉由研削步驟而露出之表面之半導體基板之表面上,形成作為絕緣膜之保護膜之保護膜形成步驟。
圖1係顯示第1實施形態之半導體裝置之製造方法之加工對象之半導體基板之一例之剖面圖。如圖1所示,本實施形態之半導體基板係包含矽基板1、半導體區域2、受光元件3、閘極4、源極及汲極5、層間絕緣膜6、配線7。又,雖圖示省略,但於矽基板1內形成有光電二極體作為攝像元件。
本實施形態之半導體基板,無論以何種製造方法製造亦可,例如於矽基板1上,使用光阻曝光及蝕刻而形成開口部,並藉由CVD(Chemical Vapor Deposition化學氣相沈積)法或塗布法等將矽氧化膜或矽氮化膜等之絕緣材料埋入開口部,藉由STI(Shallow Trench Isolation淺溝槽隔離)法形成半導體區域2。之後,於矽基板1上形成受光元件3、閘極4及源極、汲極5,並於其上反覆堆疊層間絕緣膜6與形成銅或鋁等之配線7,而形成多層配線。
另,圖1作為本實施形態之半導體基板之一例,雖顯示有使用於背照式CMOS圖像感應器之半導體基板之構成例,但作為本實施形態之半導體基板係不限於圖1之構成,無論使用何種構成之半導體基板亦可。又,使用矽以外之基板之半導體基板亦可。
繼而,說明本實施形態之半導體裝置之製造方法。圖2A至圖2C係顯示本實施形態之半導體裝置之製造方法之一例之圖。圖2A至圖2C中,省略本實施形態之半導體基板之細部(半導體區域2、受光元件3、閘極4、源極及汲極5及配線7),並顯示有矽基板1與層間絕緣膜6。
首先,進行藉由斜面研磨等之修整加工,該修整加工係將如圖2A所示之半導體基板之周緣部(端部)之特定部份(如圖2A以虛線所示之部份)研削,如圖2B所示形成露出面8。露出面8係修整加工前未露出於外部,藉由修整加工而露出之矽基板1及層間絕緣膜6之表面。圖2B之作為層間絕緣膜6所示之層亦包含有配線7,露出面8上有時亦包含有配線7。另,修整加工之方法係不限於斜面研磨,使用任何加工方法均可。又,進行修整加工時之修整形狀不限於如圖2B所示之形狀,使用任何形狀均可。
之後,如圖2C所示,包含露出面8之半導體基板之層間絕緣膜6側之面(以下稱為表側面)上,使用CVD法或旋轉塗布法等而形成保護膜9。作為保護膜9,只要為絕緣膜,則亦可使用任何材質。例如,使用CVD法之情形中,作為保護膜9,可使用以矽烷或TEOS(TetraEthOxySilane,四乙氧矽烷)作為材料之SiO2膜、以有機系矽烷作為材料之SiOC膜、以矽烷與氨作為材料之Si3N4膜、及以膦作為材料之PSG(Phosphorus Silicon Glass,磷矽玻璃)膜等。又,使用旋轉塗布法之情形中,作為保護膜9,可使用以矽烷醇作為材料之SOG(Spin On Glass,旋塗玻璃)膜、有機系材料MSQ(Methyl Silses Quioxane,甲基矽倍半氧烷)、及聚醯亞胺膜等。又,將兩種以上之材質之膜積層而形成保護膜亦可。
藉由形成如此之保護膜9,即便為藉由修整加工露出金屬之情形,亦能夠防止半導體基板之金屬污染。又,於之後之成為高溫之步驟或藥液處理之情形中亦能夠保護半導體基板。保護膜9之膜厚,係隨著材質等適當設定即可,例如使用Si3N4膜之情形,若膜厚為50 nm程度以上,則之後亦即使於成為高溫之步驟或藥液處理之情形中亦可保護半導體基板。又,作為保護膜9,使用Si3N4膜、PSG膜及聚醯亞胺膜等時,藉由保護膜9能夠期待鈍化效果,能夠保護半導體基板免於外部損傷或紫外線傷害。
半導體基板未與其他基板貼合而單獨使用之情形中,形成保護膜9後,形成單片化之半導體元件(半導體裝置)。
繼而,說明將半導體基板與其他基板貼合之情形之步驟。例如,使用於背照式CMOS圖像感應器等之半導體基板,於圖2A至圖2C所說明之步驟之後,與其他基板(支持基板)貼合。因此,於半導體基板上形成保護膜9後,於保護膜9上藉由CVD法或旋轉塗布法等形成接著層。
圖3A至圖3B係顯示形成保護膜9後之半導體基板之一例之剖面圖。圖3A係顯示半導體基板之放大圖,圖3B係顯示半導體基板之全體圖,圖3B省略細部(半導體區域2、受光元件3、閘極4、源極及汲極5及配線7)。如圖3B所示,藉由於保護膜9上形成接著層10,能形成能夠與其他基板貼合之半導體基板。
作為接著層10之材質,例如使用接著材將半導體基板與其他基板貼合之情形下,可使用稱為胺基甲酸酯系樹脂或環氧系樹脂之有機系接著劑等。又,使用直接接合之情形下,接著層10之材質可使用SiO2膜、Si3N4膜等。接著層10之層之厚度係隨著材質等適當設定即可,例如於使用矽烷或TEOS(TetralEthOxySilane,四乙氧矽烷)作為材料之SiO2膜之情形為100 nm左右。相對於此,保護膜9之厚度於使用例如矽烷與氨作為材料之Si3N4膜之情形則為50 nm左右。
如此,於本實施形態,將半導體基板之端部修整加工後,於包含露出面8之半導體基板之層間絕緣膜6側之面上形成保護膜9。因此,能夠防止來自基板端部之半導體基板之污染。
圖4係顯示第2實施形態之半導體裝置之製造方法之加工對象之半導體基板之一例之剖面圖。如圖4所示,本實施形態之半導體基板,係包含矽基板1、層間絕緣膜6、止擋層11及導電體插栓12。具有與第1實施形態相同之機能之構成要素,附加與第1實施形態同一符號而省略說明。
圖4所示之半導體基板係顯示使用於背照式CMOS圖像感應器之半導體基板之構成例,矽基板1與層間絕緣膜6之邊界附近及層間絕緣膜6內,雖與實施形態1同樣存在半導體區域2、受光元件3、閘極4、源極及汲極5、配線7,但圖4將該等省略。
使用於背照式CMOS圖像感應器之半導體基板,於與支持基板貼合後,加工作為背照式CMOS圖像感應器之晶片。為高效將入射至背面之光收集於光電二極體,半導體基板較好為薄型化。為了該薄型化,使用與支持基板貼合後,自背面研削半導體基板之方法。此時,由於藉由化學性機械研磨或藥液處理研削半導體基板,故有使用預先形成有止擋層11之半導體基板之情形。圖4係顯示包含如此之止擋層11之半導體基板之一例。
作為包含止擋層11之半導體基板,例如能夠使用SOI(Silicon On Insulator,絕緣層上覆矽)基板。SOI基板之情形,止擋層11為矽氧化物層。又,作為包含止擋層11之半導體基板,亦可使用於矽基板1上藉由離子佈植法而摻雜硼、磷、砷等之基板。此時,藉由摻雜而形成之摻雜層成為止擋層11。
又,使用於背照式CMOS圖像感應器之半導體基板之情形,係於層間絕緣膜6之積層之前,於矽基板1內預先形成從矽基板1之表面側貫通至止擋層11之導電體插栓12。導電體插栓12係用以將背面側與表面側電性連接之插栓。
圖5A至5F係顯示本實施形態之半導體裝置之製造方法之一例之圖。首先,針對包含圖4例示之止擋層11之半導體基板,與第1實施形態相同,進行修整加工、保護膜9之形成及接著層10之形成。於圖5A顯示進行接著層10之形成後之半導體基板之一例。
繼而,如圖5B所示,於半導體基板上自接著層10側貼合支持基板13而生成貼合基板。然後,如圖5C所示,將貼合基板之上下反轉,如圖5D所示將半導體基板之背面側作為上側。
繼而,如圖5E所示,藉由對貼合基板自半導體基板之背面側進行化學性機械性研磨或藥液處理,將矽基板1蝕刻至止擋層11,藉此將半導體基板薄型化。該化學型機械性研磨或藥液處理中,無論使用何種研磨材或藥液均可,使用SiO2膜作為止擋層11之情形,可使用利用高選擇比之化學性機械性研磨。
再者,如圖5F所示,藉由藥液處理除去止擋層11。此時,藉由將保護膜9成為對該藥液具備耐受性之材質,能夠防止藥液蝕刻層間絕緣膜6。例如,於該藥液中使用稱為BHF(Buffered Hydrofluoric Acid,緩衝氫氟酸)或DHF(Diluted Hydrofluoric Acid,稀氫氟酸)之氫氟酸緩衝溶液之情形,使用以CVD法成膜之Si3N4膜作為保護膜9,即能夠防止層間絕緣膜6被蝕刻。
之後,針對貼合基板進行貼上彩色濾光片等之加工,藉由單片化,形成半導體元件(半導體裝置)。圖6係顯示藉由本實施形態之製造方法而形成之半導體元件18之一例之剖面圖。圖6之例中,於半導體基板之背面側上,形成有焊接用焊墊14、鈍化膜15及彩色濾光片16。又,於矽基板1上形成有光電二極體17。
藉由將藉此形成之半導體元件18與透鏡模組等組合而形成背照式CMOS圖像感應器。圖7係顯示包含本實施形態之半導體元件18之背照式CMOS圖像感應器之構成例之圖。如圖7所示,本實施形態之背照式CMOS圖像感應器係包含半導體元件18、透鏡模組19、墊片20、屏蔽罩21。半導體元件18,係將透鏡模組19收集之光藉由光電轉換變換為電子訊號後輸出。另,圖7所示之構成為一例,使用半導體元件18之背照式CMOS圖像感應器之構成係不限於如圖7所示之構成,無論以何種構成亦可。
藉此,於本實施形態中,使用包含止擋層11之基板作為半導體基板之情形中,係將半導體基板修整加工後於包含露出面8之半導體基板之層間絕緣膜6側之面上形成保護膜9。因此,取得與第1實施形態相同之效果,且於除去止擋層11之藥液處理時,能夠防止藥液蝕刻層間絕緣膜6。
雖說明了本發明之多個實施形態,但該等實施形態係作為例而予以提示者,並無限定發明之範圍之意圖。該等新穎實施形態,係能夠以其他多種多樣之形態而實施,於未脫離發明之要旨之範圍內,能夠進行各種省略、替換、變更。該等實施形態或其變形,包含於發明之範圍或要旨中之同時,包含於本發明之專利請求之範圍及與其均等之範圍內。
1...矽基板
2...半導體區域
3...受光元件
4...閘極
5...源極、汲極
6...層間絕緣膜
7...配線
8...露出面
9...保護膜
10...接著層
11...止擋層
12...導電體插栓
13...支持基板
14...焊墊
15...鈍化膜
16...彩色濾光片
17...光電二極體
18...半導體元件
19...透鏡模組
20...墊片
21...遮蔽罩
圖1係顯示第1實施形態之半導體基板之一例之剖面圖;
圖2A至2C係顯示第1實施形態之半導體裝置之製造方法之一例之圖;
圖3A至3B係顯示形成保護膜後之半導體基板之一例之剖面圖;
圖4係顯示第2實施形態之半導體基板之一例之剖面圖;
圖5A至5F係顯示第2實施形態之半導體裝置之製造方法之一例之圖;
圖6係顯示藉由第2實施形態之製造方法而形成之半導體元件之一例之剖面圖;及
圖7係顯示包含本實施形態之半導體元件之背照式CMOS圖像感應器之構成例之圖。
10‧‧‧接著層
Claims (7)
- 一種半導體裝置之製造方法,其特徵在於:研削半導體基板之周緣部,且於包含藉由上述研削而露出之表面之上述半導體基板之表面上,形成保護膜,該保護膜係絕緣膜;藉由於形成上述保護膜後之上述半導體基板上,自上述保護膜側貼合其他基板而形成貼合基板;上述半導體基板係於內部包含作為蝕刻止擋層發揮作用之止擋層,將上述止擋層作為蝕刻止擋層,自上述貼合基板之上述半導體基板側進行蝕刻,藉此將上述半導體基板薄化;使用藥液除去上述止擋層;且使上述保護膜為對上述藥液具備耐受性之材質。
- 如請求項1之半導體裝置之製造方法,其中使上述半導體基板為SOI基板,上述止擋層為矽氧化膜層。
- 如請求項1之半導體裝置之製造方法,其中上述半導體基板係於內部包含藉由離子佈植法而形成之摻雜層,以上述止擋層作為上述摻雑層。
- 如請求項1之半導體裝置之製造方法,其中上述保護膜係藉由CVD法形成。
- 如請求項4之半導體裝置之製造方法,其中上述保護膜為SiO2膜、SiOC膜、Si3N4膜及PSG膜之中任一者以上。
- 如請求項1之半導體裝置之製造方法,其中上述保護膜 係藉由旋轉塗布法形成。
- 如請求項6之半導體裝置之製造方法,其中上述保護膜係SOG膜、MSQ及聚醯亞胺膜之中任一者以上。
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