JP2016531421A - 真空ゲッタとして使用されるウェファレベルのパッケージされた半田バリア - Google Patents
真空ゲッタとして使用されるウェファレベルのパッケージされた半田バリア Download PDFInfo
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- 230000004888 barrier function Effects 0.000 title claims abstract description 208
- 229910000679 solder Inorganic materials 0.000 title claims abstract description 90
- 239000000463 material Substances 0.000 claims abstract description 233
- 239000010936 titanium Substances 0.000 claims abstract description 83
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 81
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 81
- 238000000034 method Methods 0.000 claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims description 137
- 238000000151 deposition Methods 0.000 claims description 27
- 230000003213 activating effect Effects 0.000 claims description 8
- 238000005304 joining Methods 0.000 claims description 7
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000007767 bonding agent Substances 0.000 description 30
- 229910052751 metal Inorganic materials 0.000 description 25
- 239000002184 metal Substances 0.000 description 25
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 21
- 239000010703 silicon Substances 0.000 description 21
- 229910052710 silicon Inorganic materials 0.000 description 21
- 230000005855 radiation Effects 0.000 description 19
- 239000010931 gold Substances 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
- 238000010586 diagram Methods 0.000 description 13
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 13
- 229910052737 gold Inorganic materials 0.000 description 13
- 230000008569 process Effects 0.000 description 11
- 230000008021 deposition Effects 0.000 description 9
- 230000004913 activation Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 8
- 238000003491 array Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- ZNKMCMOJCDFGFT-UHFFFAOYSA-N gold titanium Chemical compound [Ti].[Au] ZNKMCMOJCDFGFT-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- -1 polysiloxanes Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001258 titanium gold Inorganic materials 0.000 description 2
- 229910008599 TiW Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000708 deep reactive-ion etching Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920000307 polymer substrate Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
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- H01L23/02—Containers; Seals
- H01L23/10—Containers; Seals characterised by the material or arrangement of seals between parts, e.g. between cap and base of the container or between leads and walls of the container
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- B81B7/00—Microstructural systems; Auxiliary parts of microstructural devices or systems
- B81B7/0032—Packages or encapsulation
- B81B7/0035—Packages or encapsulation for maintaining a controlled atmosphere inside of the chamber containing the MEMS
- B81B7/0038—Packages or encapsulation for maintaining a controlled atmosphere inside of the chamber containing the MEMS using materials for controlling the level of pressure, contaminants or moisture inside of the package, e.g. getters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00015—Manufacture or treatment of devices or systems in or on a substrate for manufacturing microsystems
- B81C1/00261—Processes for packaging MEMS devices
- B81C1/00269—Bonding of solid lids or wafers to the substrate
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- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76841—Barrier, adhesion or liner layers
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- H01L23/18—Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device
- H01L23/26—Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device including materials for absorbing or reacting with moisture or other undesired substances, e.g. getters
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- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
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- H01L27/14634—Assemblies, i.e. Hybrid structures
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- 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
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- B81B2201/00—Specific applications of microelectromechanical systems
- B81B2201/02—Sensors
- B81B2201/0207—Bolometers
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- B81C2203/00—Forming microstructural systems
- B81C2203/03—Bonding two components
- B81C2203/033—Thermal bonding
- B81C2203/035—Soldering
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- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
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Abstract
Description
Claims (20)
- 電子デバイスを製作するための方法であって、
少なくとも一つのキャビティと前記少なくとも一つのキャビティを取り囲む表面を有する第1のサブストレートを提供するステップと、
前記第1のサブストレートの前記表面上にチタン材料の半田バリアレイヤをデポジットするステップと、
前記少なくとも一つのキャビティの境界線の周りにリングを形成するために、前記チタン材料の半田バリアレイヤの一部分および前記第1のサブストレートの一部分のうち少なくとも一つの上に第1のシール構造体を形成するステップと、
ゲッタとして機能するように、真空環境において前記チタン材料の半田バリアレイヤを活性化するステップと、
取り付けられた少なくとも一つのデバイスと第2のシール構造体を含む、第2のサブストレートを提供するステップであり、前記第2のシール構造体は、前記少なくとも一つのデバイスの境界線の周りにリングを形成している、ステップと、
前記第1のサブストレートの前記少なくとも一つのキャビティが前記少なくとも一つのデバイスの上に位置決めされるように、前記第1のシール構造体を前記第2のシール構造体に対して位置合わせするステップと、
半田を用いて前記第1のサブストレートを前記第2のサブストレートに対して接合するステップであり、前記半田バリアレイヤは、前記接合の最中に前記半田が前記第1のサブストレートに接触することを防ぐ、ステップと、
を含む、方法。 - 前記活性化するステップは、
約10分から約120分の範囲の時間期間に約200°Cから約500°Cの範囲における温度まで、前記チタン材料の半田バリアレイヤを加熱するステップ、
を含む、請求項1に記載の方法。 - 前記チタン材料の半田バリアレイヤをデポジットするステップは、
約1000オングストロームから約10000オングストロームの範囲であるチタン材料の厚みで半田バリアレイヤをデポジットするステップ、
を含む、請求項1に記載の方法。 - 前記チタン材料の半田バリアレイヤを活性化するステップは、
前記第1のシール構造体を前記第2のシール構造体に対して位置合わせするステップの以後に実行される、
請求項1に記載の方法。 - 前記チタン材料の半田バリアレイヤを活性化するステップは、
前記第1のサブストレートを前記第2のサブストレートに対して接合するステップと同時に実行される、
請求項1に記載の方法。 - 前記第1のシール構造体は、前記第1のサブストレートの前記一部分の上に形成され、
前記チタン材料の半田バリアレイヤは、前記第1のサブストレートの前記表面上で、かつ、前記第1のシール構造体の境界線の周りに形成される、
請求項1に記載の方法。 - 前記方法は、さらに、
前記第1のサブストレートの前記表面上にバリア材料の少なくとも一つのレイヤをデポジットするステップと、
を含む、請求項1に記載の方法。 - 前記バリア材料の少なくとも一つのレイヤをデポジットするステップは、
前記チタン材料の半田バリアレイヤをデポジットするステップの以前に実行される、
請求項7に記載の方法。 - 前記チタン材料の半田バリアレイヤは、前記第1のシール構造体の境界線の周りにデポジットされる、
請求項8に記載の方法。 - 前記チタン材料の半田バリアレイヤは、前記第1のシール構造体の前記境界線の一部分をオーバーラップするようにデポジットされる、
請求項9に記載の方法。 - 前記バリア材料の少なくとも一つのレイヤは、チタン−タングステンを含む、
請求項8に記載の方法。 - 前記チタン材料の半田バリアレイヤは、前記バリア材料の少なくとも一つのレイヤよりも多孔性である、
請求項8に記載の方法。 - パッケージされた電子デバイスであって、
第1のサブストレートであり、その上に形成された少なくとも一つのキャビティ、および、前記少なくとも一つのキャビティを取り囲む第1の表面を有する、第1のサブストレートと、
取り付けられた少なくとも一つのデバイスを含む、第2のサブストレートと、
前記第1のサブストレートの上に配置された第1のシール構造体と、
前記第2のサブストレートの上に配置され、かつ、半田を用いて前記第1のシール構造体に対して接合された第2のシール構造体であり、前記第1の表面が前記第2のサブストレートに面しており、かつ、前記少なくとも一つのキャビティが前記少なくとも一つのデバイスの上に位置決めされている、第2のシール構造体と、
前記半田と前記第1のサブストレートとの間に、前記キャビティの境界線の周りに配置されたチタン材料の少なくとも一つのレイヤ、を含む半田バリアであり、前記チタン材料の少なくとも一つのレイヤは、ゲッタとして機能するように活性化されている、半田バリアと、
を含む、電子デバイス。 - 前記チタン材料の少なくとも一つのレイヤは、前記第1のサブストレートの前記表面上で、かつ、前記第1のシール構造体の境界線の周りに形成される、
請求項13に記載の電子デバイス。 - 前記半田バリアは、前記第1のサブストレートの前記第1の表面の一部分の上に配置され、かつ、
前記第1のシール構造体は、前記チタン材料の少なくとも一つのレイヤの一部分の上に配置される、
請求項13に記載の電子デバイス。 - 前記半田バリアは、さらに、
前記キャビティの境界線の周りに配置された、バリア材料の少なくとも一つのレイヤを含む、
請求項13に記載の電子デバイス。 - 前記バリア材料の少なくとも一つのレイヤは、前記バリア材料の少なくとも一つのレイヤ上で、かつ、前記第1のシール構造体の境界線の周りに配置される、
請求項16に記載の電子デバイス。 - 前記バリア材料の少なくとも一つのレイヤは、チタン−タングステンを含む、
請求項17に記載の電子デバイス。 - 前記チタン材料の少なくとも一つのレイヤの厚みは、約1000オングストロームから約10000オングストロームの範囲である、
請求項13に記載の電子デバイス。 - 前記第2のサブストレートは、さらに、取り付けられた少なくとも一つの参照デバイスを含み、かつ、
前記チタン材料の少なくとも一つのレイヤは、前記少なくとも一つの参照デバイスの上に位置決めされている、
請求項13に記載の電子デバイス。
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