WO2016020729A1 - Entspiegelung der rueckseite eines halbleiterwafers - Google Patents
Entspiegelung der rueckseite eines halbleiterwafers Download PDFInfo
- Publication number
- WO2016020729A1 WO2016020729A1 PCT/IB2014/063804 IB2014063804W WO2016020729A1 WO 2016020729 A1 WO2016020729 A1 WO 2016020729A1 IB 2014063804 W IB2014063804 W IB 2014063804W WO 2016020729 A1 WO2016020729 A1 WO 2016020729A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wafer
- layer
- support wafer
- cmos
- antireflection
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 11
- 230000003667 anti-reflective effect Effects 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 48
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000006117 anti-reflective coating Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000005693 optoelectronics Effects 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims 1
- 238000005530 etching Methods 0.000 abstract description 18
- 230000003287 optical effect Effects 0.000 abstract description 7
- 238000000227 grinding Methods 0.000 abstract description 3
- 238000001459 lithography Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 235000012431 wafers Nutrition 0.000 description 78
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- 229920005591 polysilicon Polymers 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
-
- 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
- H01L27/14685—Process for coatings or optical elements
-
- 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
- H01L27/1462—Coatings
-
- 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
- H01L27/14634—Assemblies, i.e. Hybrid 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
-
- 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
- H01L27/14643—Photodiode arrays; MOS imagers
-
- 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
- H01L27/14687—Wafer level processing
-
- 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
- H01L27/14689—MOS based technologies
-
- 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
- H01L27/1469—Assemblies, i.e. hybrid integration
Definitions
- the invention relates to manufacturing processes of optically active semiconductor devices.
- it relates to methods for CMOS devices wherein light-sensitive or light-generating components are formed in the front of a CMOS wafer whose reverse side is thinned and anti-reflective so that the photosensitive or light-generating components transmit their light through the backside of the wafer receive or broadcast (depending on the reference).
- CMOS integration is increasingly moving into the third dimension.
- the desired goal is to increase the sales density with funds that go beyond the further development of lithography and open up previously unused areas for it. From the field of
- Image sensors it is already known to arrange the pixel sensors of an image sensor so that they feel the illumination through the wafer backside (so-called “backside illumination”, also called BSI).
- backside illumination also called BSI
- an anti-reflection layer on the pixel sensors of an image sensor so that they feel the illumination through the wafer backside (so-called “backside illumination”, also called BSI).
- Wafer Wegllseite formed in order to avoid light losses and thereby increase the photosensitivity of the image sensor.
- CMOS image sensor with rear-side reflection is illustrated by DE 10 2011 014 010 A1 (Taiwan Semiconductor).
- Process step in which the process conditions (e.g., temperature,
- CMOS components must be selected so that the CMOS components are not affected during the anti-reflection steps.
- CMOS circuits such as processors, application specific semiconductor devices (US Pat. ASIC) and the like in which the
- Anti-reflection process is that the selection of the anti-reflection process parameters and materials is limited, because with this selection, consideration must be given to the CMOS components on the front. This limitation may cause the selected process parameters and materials to be ineligible for antireflection. It is an object of the invention to enable an anti-reflection of a portion of the backside of a wafer in a CMOS process, with the goal of a defect-free
- Silicon interface for optimum electrical performance thereof, wherein any CMOS components formed on the front surface are not affected or damaged by side effects of the anti-reflection process steps.
- the invention provides a method according to claim 1. Variants of the method according to the invention are covered by the dependent claims 2 to 14. The wafer produced therewith describes claim 15.
- the anti-reflection layer is applied before the CMOS process, the associated process steps are not due to the presence of an existing CMOS structure.
- the antireflective layer may e.g. at a higher temperature
- the anti-reflection layer protects the silicon interface of the wafer back against damage or
- circuit components e.g., CMOS components
- Front of the base wafer are located and the anti-reflection is on the back.
- the SOI wafer may be e.g. be arranged so that the CMOS components on the back of the SOI wafer (according to common name of the sides of a SOI wafer) are manufactured.
- This "back side” of the SOI wafer is still called “front side", because the latter refers to the context of the entire structure.
- Figure 1 shows a schematic cross section of a first
- Figure 2 shows a schematic cross-section of a resulting
- FIG. 3 shows a schematic cross section of a first CMOS process.
- FIG. 4 shows a schematic cross section of a second CMOS process.
- FIGS 5a and 5b show in schematic cross section two variants
- FIGS 6a and 6b show in schematic cross section another
- FIGS 7a and 7b show in schematic cross section still one
- FIGS 8a and 8b show in schematic cross section another
- FIG. 9 shows a schematic cross-section of the stabilizing element
- FIG. 10 shows a schematic cross section of a thinning step
- wafer is used. This term is to be understood as a semiconductor wafer or plate or platelets. A wafer may e.g. consist of monocrystalline silicon. Although the example of CMOS and silicon is explained below, the description should be read also for other manufacturing technologies.
- precipitate is understood in the general sense, and includes the generation of layers in general. Where a first layer is “on” a second, it is not excluded that one or more further layers are in between.
- antireflection should not be understood in the narrowest sense of a reduction of the reflection of the wafer; the term may also include other optical functions, such as
- CMOS devices complementary metal-oxide-semiconductor devices
- the SOI wafer may be arranged so that the CMOS devices on the back side of the SOI wafer (as per the conventional
- FIG. 1 shows as an example a silicon-on-insulator (SOI) or smart-cut wafer 1, referred to below as base wafer.
- SOI silicon-on-insulator
- base wafers 1 are suitable for the production of CMOS circuits on a silicon interface 2 2 , which is subsequently uncovered by the removal or a part of the base wafer 1 on its front side 2 X.
- a so-called buried oxide layer 9 (English: “Buried oxide layer”) is shown in the example of Figure 1.
- a thin oxide is first generated on the back 3i of the base wafer 1, z. Below 10 nm, in particular in the range between 2 nm and 3 nm.
- This oxide layer (not shown) can be produced, for example, under the same process conditions which are used for the formation of gate oxide in the CMOS components still to be produced.
- the oxide layer serves to protect the silicon surface on the back 3i from contamination and uncontrolled oxidation.
- An anti-reflection layer 4 (SiC, for example, or preferably Si 3 N 4 ) is deposited on the "thin" oxide in a thickness that corresponds to its task, typically between 10 nm and 60 nm, for example 42 nm, if at a light wavelength in the Range of 400 nm, a good anti-reflection should be achieved.
- the process parameters for optimum optical performance eg antireflection coating,
- a Si 3 N 4 layer 4 may be deposited at a higher temperature than the temperature that would be suitable for conserving existing CMOS devices. Due to the higher temperature, the resulting Si 3 N 4 layer 4 may have a higher quality, for example with a smaller hydrogen fanteil.
- the deposition can also be more precise, based on the important for the anti-reflective coating
- Antireflection coating 4 can be optimized, for example, with a suitable deposition rate and duration.
- a thin silicon oxide layer 5 is deposited on the Si 3 N 4 layer 4.
- the exemplary thin silicon oxide layer 5, also called the second etching stop layer, has the task of stopping etching of the polysilicon layer 6, which is subsequently applied to the second etching stop layer 5. A remainder of the second
- Etch stop layer 5 may act at the end of the process together with the first anti-reflection layer 4 as an anti-reflection layer system.
- the second etch stop layer 5 is therefore preferably very thin, e.g. B. 2 nm to 10 nm, but strong enough to achieve a stable process control of Polysiliziumfordung. If the thinned second etching stop layer 5 should optionally act together with the antireflection coating 4 as antireflection coating system, the thickness of the antireflection coating 4 (and its optical layer properties such as refractive index, etc.) must be selected so that the antireflective coating system as a whole the desired has optical properties.
- This polysilicon layer 6 will also be referred to as the second etch stop layer 6 below and serves to stop etching of the one or more bonding layers 7 formed thereon, e.g. As oxide or nitride.
- the thickness of the second etching stop layer 6 is, for example, between 100 nm and 300 nm, which results from the requirement as an end stop for the etching of the bonding layer 7 lying thereon.
- a further silicon oxide layer or silicon nitride layer, referred to below as bonding layer 7, is thus deposited on the second etching stop layer 6, which serves for bonding a carrier wafer 8.
- the bonding layer 7 is preferably a few hundred nanometers thick, in particular between 150 and 250 nm, with a very smooth surface, in order to allow an error-free bonding of the support wafer 8.
- a further process step for example a polishing of the bonding layer 7 before the bonding of the support wafer 8, can be carried out.
- the surface of the bonding layer 7 is - as mentioned - bonded to a carrier wafer 8. Subsequently, the material of the base wafer 1 is removed except on its device wafer part 1 ', or if the base wafer 1 is a smart-cut wafer, it is reduced to its device wafer part 1' by the smart-cut process. The resulting new silicon interface 2 2 is used for the subsequent standard CMOS process as the front wafer surface.
- the processed so far wafer is shown schematically in Figure 2.
- the revealed silicon interface 2 2 of the SOI or smart-cut base wafer 1 ' is ready for CMOS production; the anti-reflection layer 4 is already present, but still covered; the
- Etch stop layers 5 and 6 are ready for later processing of the wafer back 3 2 ; and the entire wafer structure is stabilized by the bonded support wafer 8 and the bonding layer 7 for subsequent CMOS fabrication.
- Figures 3 and 4 show an exemplary CMOS fabrication on the prepared
- CMOS devices 10 comprising one or more optoelectronic elements are formed in the remaining base wafer 1 '. Subsequently, insulating layers 11, metallizations 12 and a passivation layer 13 are formed.
- Openings 14 to the bond pads 15 are also formed. This results in a new front 2 3 of the wafer.
- the bonded wafer is rotated as shown in Figures 5b and 5b so that its backside 3 2 can be processed.
- the support wafer 8 either complete or -. B. using a
- the carrier wafer 8 can first be thinned (by grinding and / or polishing) and prepared for lithography. Subsequently, light feedthroughs 16 are selectively etched by the remaining silicon of the support wafer 8. The silicon etching of the support wafer 8 can in the
- Bonding layer 7 are stopped;
- Figures 5a and 5b show tapered and straight-walled ⁇ tzbei founded.
- Wet etching eg, potassium hydroxide, KOH
- dry etching may be used.
- the bonding layer 7 can then start with a stop on the first etching stop layer 6
- a second carrier wafer 18 is preferably applied to the wafer front side, as shown in FIG. 8, which can be removed later so that an electrical contact can be made with the bond pads 15.
- the wafer thus has a new front 2 4 .
- Figure 9 shows how the first support wafer 8 z. B. has been removed by grinding into the bonding layer 7. Subsequently, the remaining remainder 7 'of the bonding layer 7 becomes over or from an oxide etching process on the new back surface 3 3 to the first one
- Etch stop layer 6 (polysilicon) is removed, whereupon the first ⁇ tzstopp Anlagen 6 by means of a very precise Polysiliziumfordreaes except for the second ⁇ tzstopptik 5 (silicon oxide) is removed with high precision.
- the new back side 3 4 of the wafer is now characterized by a very uniform, high-quality antireflection coating 4, 5 'of, for example, 10 nm to 60 nm Si 3 N 4 and 1 nm to 5 nm of the oxide layer 5 'protected.
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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)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112014006650.8T DE112014006650A5 (de) | 2014-08-08 | 2014-08-08 | Entspiegelung der Rückseite eines Halbleiterwafers |
PCT/IB2014/063804 WO2016020729A1 (de) | 2014-08-08 | 2014-08-08 | Entspiegelung der rueckseite eines halbleiterwafers |
US15/502,212 US20170271397A1 (en) | 2014-08-08 | 2014-08-08 | Anti-Reflective Treatment Of The Rear Side Of A Semiconductor Wafer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2014/063804 WO2016020729A1 (de) | 2014-08-08 | 2014-08-08 | Entspiegelung der rueckseite eines halbleiterwafers |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016020729A1 true WO2016020729A1 (de) | 2016-02-11 |
Family
ID=51539306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2014/063804 WO2016020729A1 (de) | 2014-08-08 | 2014-08-08 | Entspiegelung der rueckseite eines halbleiterwafers |
Country Status (3)
Country | Link |
---|---|
US (1) | US20170271397A1 (de) |
DE (1) | DE112014006650A5 (de) |
WO (1) | WO2016020729A1 (de) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004021452A2 (de) | 2002-08-29 | 2004-03-11 | X-Fab Semiconductor Foundries Ag | Integrierte fotoempfindliche strukturen und passivierungsverfahren |
US20050074954A1 (en) * | 2002-10-11 | 2005-04-07 | Hideo Yamanaka | Method and apparatus for producing ultra-thin semiconductor chip and method and apparatus for producing ultra-thin back-illuminated solid-state image pickup device |
US20100006969A1 (en) * | 2008-07-03 | 2010-01-14 | Byung-Jun Park | Image sensor, substrate for the same, image sensing device including the image sensor, and associated methods |
US20100108893A1 (en) * | 2008-11-04 | 2010-05-06 | Array Optronix, Inc. | Devices and Methods for Ultra Thin Photodiode Arrays on Bonded Supports |
WO2011039568A1 (de) | 2009-09-30 | 2011-04-07 | X-Fab Semiconductor Foundries Ag | Halbleiterbauelement mit fensteroeffnung als schnittstelle zur umgebungs-ankopplung |
DE102011014010A1 (de) | 2010-08-13 | 2012-02-16 | Taiwan Semiconductor Manufacturing Co., Ltd. | Antireflexschicht für rückseitig beleuchteten Bildsensor und Verfahren zur Herstellung desselben |
US20120306035A1 (en) * | 2011-06-06 | 2012-12-06 | Stmicroelectronics (Crolles 2) Sas | Process for fabricating a backside-illuminated imaging device and corresponding device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6724794B2 (en) * | 2001-06-29 | 2004-04-20 | Xanoptix, Inc. | Opto-electronic device integration |
US6710376B2 (en) * | 2001-09-04 | 2004-03-23 | Eugene Robert Worley | Opto-coupler based on integrated forward biased silicon diode LED |
JP5422914B2 (ja) * | 2008-05-12 | 2014-02-19 | ソニー株式会社 | 固体撮像装置の製造方法 |
US8502389B2 (en) * | 2011-08-08 | 2013-08-06 | Taiwan Semiconductor Manufacturing Company, Ltd. | CMOS image sensor and method for forming the same |
US9373732B2 (en) * | 2012-02-07 | 2016-06-21 | Semiconductor Components Industries, Llc | Image sensors with reflective optical cavity pixels |
-
2014
- 2014-08-08 DE DE112014006650.8T patent/DE112014006650A5/de not_active Withdrawn
- 2014-08-08 WO PCT/IB2014/063804 patent/WO2016020729A1/de active Application Filing
- 2014-08-08 US US15/502,212 patent/US20170271397A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004021452A2 (de) | 2002-08-29 | 2004-03-11 | X-Fab Semiconductor Foundries Ag | Integrierte fotoempfindliche strukturen und passivierungsverfahren |
US20050074954A1 (en) * | 2002-10-11 | 2005-04-07 | Hideo Yamanaka | Method and apparatus for producing ultra-thin semiconductor chip and method and apparatus for producing ultra-thin back-illuminated solid-state image pickup device |
US20100006969A1 (en) * | 2008-07-03 | 2010-01-14 | Byung-Jun Park | Image sensor, substrate for the same, image sensing device including the image sensor, and associated methods |
US20100108893A1 (en) * | 2008-11-04 | 2010-05-06 | Array Optronix, Inc. | Devices and Methods for Ultra Thin Photodiode Arrays on Bonded Supports |
WO2011039568A1 (de) | 2009-09-30 | 2011-04-07 | X-Fab Semiconductor Foundries Ag | Halbleiterbauelement mit fensteroeffnung als schnittstelle zur umgebungs-ankopplung |
DE102011014010A1 (de) | 2010-08-13 | 2012-02-16 | Taiwan Semiconductor Manufacturing Co., Ltd. | Antireflexschicht für rückseitig beleuchteten Bildsensor und Verfahren zur Herstellung desselben |
US20120306035A1 (en) * | 2011-06-06 | 2012-12-06 | Stmicroelectronics (Crolles 2) Sas | Process for fabricating a backside-illuminated imaging device and corresponding device |
Also Published As
Publication number | Publication date |
---|---|
US20170271397A1 (en) | 2017-09-21 |
DE112014006650A5 (de) | 2017-01-26 |
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