WO2017155310A1 - 세라믹 기판의 비아홀 충진 방법 및 이를 이용하여 충진된 세라믹 기판의 비아홀 충진체 - Google Patents
세라믹 기판의 비아홀 충진 방법 및 이를 이용하여 충진된 세라믹 기판의 비아홀 충진체 Download PDFInfo
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- WO2017155310A1 WO2017155310A1 PCT/KR2017/002529 KR2017002529W WO2017155310A1 WO 2017155310 A1 WO2017155310 A1 WO 2017155310A1 KR 2017002529 W KR2017002529 W KR 2017002529W WO 2017155310 A1 WO2017155310 A1 WO 2017155310A1
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- ceramic substrate
- via hole
- deposition
- conductor
- electrode layer
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W99/00—Subject matter not provided for in other groups of this subclass
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/40—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials
- H10P14/42—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials using a gas or vapour
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/40—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials
- H10P14/46—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials using a liquid
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W40/00—Arrangements for thermal protection or thermal control
- H10W40/20—Arrangements for cooling
- H10W40/25—Arrangements for cooling characterised by their materials
- H10W40/255—Arrangements for cooling characterised by their materials having a laminate or multilayered structure, e.g. direct bond copper [DBC] ceramic substrates
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/01—Manufacture or treatment
- H10W70/05—Manufacture or treatment of insulating or insulated package substrates, or of interposers, or of redistribution layers
- H10W70/095—Manufacture or treatment of insulating or insulated package substrates, or of interposers, or of redistribution layers of vias therein
Definitions
- the present invention relates to a method of filling a via hole of a ceramic substrate, and a via hole filler of a ceramic substrate filled using the same, and more particularly, to a method of filling a via hole of a ceramic substrate without porosity and to using the same.
- the present invention relates to a filling method for via hall of ceramic board and a filler for via hall of ceramic board using the same.
- a ceramic DBC (Direct Bonded Copper) substrate in which a metal foil such as copper foil is integrally attached to the ceramic substrate or a ceramic DPC having a copper plating layer formed on the ceramic substrate is widely used.
- ceramic DBC substrates are used in semiconductor power modules, and have higher heat dissipation characteristics when the leads are placed on existing heat dissipating materials.
- ceramic DBC substrates do not require inspection processes to check the adhesion state of heat sinks. This board has the advantage of being able to provide semiconductor power modules with improved consistency.
- the ceramic DBC substrate or the ceramic DBC substrate has been increasingly used as a power semiconductor module for automobiles with the increase of electric vehicles.
- the ceramic DBC substrate or the ceramic DBC substrate is manufactured by interfacial bonding of a ceramic substrate and a copper copper foil through a high temperature baking process.
- Via holes for electrically connecting circuit patterns formed on both surfaces of the ceramic substrate in the ceramic DBC substrate or the ceramic substrate including the ceramic DBC substrate are mainly formed by laser processing, and then the conductor is formed by plating or conductive paste therein. have.
- the via hole of the ceramic substrate which is processed by laser is formed in a shape that gradually decreases in diameter from one surface of the ceramic substrate to the other surface, and when the conductor is formed inside by using plating or conductive paste, the conductor is not completely filled and There was a problem that a number of pores are formed in.
- a large cavity may be formed in the conductor in the process of forming the conductor in the via hole. In this case, there is a problem in that the operation reliability of the ceramic substrate is greatly reduced.
- the present invention has been made in view of the above, and a method of filling a via hole of a ceramic substrate and a via hole of a ceramic substrate filled using the same by vacuum melting the conductor in the via hole to fill the via hole of the ceramic substrate without pores
- the purpose is to provide a filler.
- a via hole filling method of a ceramic substrate includes a via hole forming step of forming a via hole in a ceramic substrate, a conductor forming step of forming a conductor in the via hole, and a vacuum to melt and cool the conductor in a vacuum state. It includes a melting step.
- the via hole forming step may form via holes penetrating both sides of the ceramic substrate through laser processing.
- the via hole may be formed to gradually decrease in diameter from one surface to the other surface.
- the conductor forming step includes a first deposition process of forming a first deposition conductive layer on the inner circumferential surface of the via hole by physical deposition and a second deposition formation of a second deposition conductive layer on the first deposition conductive layer by physical deposition on the inside of the via hole.
- the process includes a plating process for forming a plated body by plating in the via hole, and the vacuum melting step may vacuum melt the plated body.
- the physical vapor deposition method may be one selected from vacuum deposition, evaporation, ebeam deposition, laser deposition, sputtering, and arc ion plating.
- electrode layers for forming a circuit pattern may be formed on both surfaces of the ceramic substrate, respectively.
- the first deposition process is formed by depositing a first deposition electrode layer on one surface of a ceramic substrate together with the first deposition conductive layer, and the second deposition process forms a second deposition electrode layer on the first deposition electrode layer together with the second deposition conductive layer.
- the plating electrode layer is plated on the second deposition electrode layer together with the conductor to form an electrode layer for forming circuit patterns on both surfaces of the ceramic substrate.
- the via hole filling method of the ceramic substrate according to an embodiment of the present invention may further include a step of polishing and flattening the electrode layer after the vacuum melting step.
- the via hole filler of the ceramic substrate according to an embodiment of the present invention is a via hole filler of a ceramic substrate including a conductor filled in the via hole of the ceramic substrate, and the conductor has a melting structure that is cured again after the metal is melted. .
- the conductor may be formed to completely fill the via hole, and the first deposition conductive layer deposited on the inner circumferential surface of the via hole, the second deposition conductive layer deposited on the first deposition conductive layer, and the plating material formed in the via hole. It includes, and the plated body is filled in the via hole in contact with the second deposition conductive layer, it may have a melting structure hardened again after the metal is melted.
- the via hole filler of the ceramic substrate according to the exemplary embodiment of the present invention may further include electrode layers formed on both surfaces of the ceramic substrate to form circuit patterns, respectively.
- the electrode layer may include a first deposition electrode layer deposited on both surfaces of the ceramic substrate, a second deposition electrode layer deposited on the first deposition electrode layer on both surfaces of the ceramic substrate, and a plating electrode layer plated on the second deposition electrode layer.
- the via hole may be formed to gradually decrease in diameter from one side to the other side.
- the present invention can simply fill the via hole of the ceramic substrate without pores by vacuum melting the conductor in the via hole, thereby simplifying the manufacturing process of the ceramic substrate and reducing the manufacturing cost.
- the present invention has the effect of completely filling the via hole of the ceramic substrate without pores to improve the operational reliability of the ceramic substrate and to ensure stable operational reliability when used in a high power semiconductor module.
- FIG. 1 is a process diagram showing an embodiment of a method for filling via holes in a ceramic substrate according to the present invention.
- Figure 2 is a schematic diagram showing an embodiment of the via hole filling method of the ceramic substrate according to the present invention.
- Figure 3 is a cross-sectional view showing an embodiment of the via hole filler of the ceramic substrate according to the present invention.
- FIG. 1 is a process diagram illustrating an embodiment of a via hole filling method of a ceramic substrate according to the present invention
- FIG. 2 is a schematic view illustrating an embodiment of a via hole filling method of a ceramic substrate according to the present invention.
- a via hole forming step (S100) of forming a via hole 11 in a ceramic substrate 10, and conducting in the via hole 11 are performed.
- the via hole 11 penetrating both surfaces of the ceramic substrate 10 through laser processing is formed.
- the via hole forming step S100 may be formed by drilling in addition to laser processing.
- a via hole is formed in a required portion of the ceramic substrate 10 (that is, a position according to a predetermined circuit design) by using one method selected from drill processing and laser processing.
- the via holes 11 are formed to electrically connect circuit patterns respectively formed on both surfaces of the ceramic substrate 10.
- the via hole 11 is formed by using a laser to have a shape in which the diameter gradually decreases from one surface to the other surface.
- Conductor forming step S200 a conductor 20 for electrically connecting circuit patterns formed on both surfaces of the ceramic substrate 10 in the via hole 11 is formed.
- Conductor forming step (S200) is an example of forming the conductor 20 in the via hole 11 by plating.
- the conductive paste including the conductive powder and the binder is filled in the via hole 11 to form the conductor 20 as another example.
- the first deposition process S210 for forming the first deposition conductive layer 21 on the inner circumferential surface of the via hole 11 by the physical deposition method, and the first deposition conductive layer inside the via hole 11 may include a second deposition process S220 for forming the second deposition conductive layer 22 on the physical deposition method, and a plating process S230 for forming the plating body 23 by plating in the via hole 11. have.
- the first deposition conductive layer 21 and the first deposition conductive layer 21 are formed to have a thickness of greater than 0 and 10 ⁇ m or less using physical vapor deposition.
- the physical vapor deposition method may be any one of vacuum deposition, evaporation, ebeam deposition, laser deposition, sputtering, arc ion plating, and the like.
- the target material is physically deposited on the inner circumferential surface of the via hole 11 to form a first deposition conductive layer 21 having excellent bonding strength with the ceramic substrate 10.
- the target material is an example of a material having excellent bonding strength with the ceramic substrate 10 such as titanium (Ti).
- the target material is physically deposited on the inner circumferential surface of the via hole 11 to form the second deposition conductive layer 22.
- the target material is physically deposited on the first deposition conductive layer 21 on the inner circumferential surface of the via hole 11 to form a second deposition conductive layer 22 having excellent bonding strength with the plated body 23. It is.
- the target material is copper (Cu), silver (Ag), gold (Au), aluminum (Al), etc. having excellent bonding strength with the plated body 23 formed in the via hole 11. do.
- target material in the second deposition process S220 may be variously modified according to the plated body 23 formed by being plated.
- the electrode layer 30 for forming a circuit pattern may be formed on both surfaces of the ceramic substrate 10, respectively.
- the electrode layer 30 for forming a circuit pattern on each side of the ceramic substrate 10 may be formed together, respectively. It is.
- the first deposition process S210 is formed by depositing the first deposition electrode layer 31 on one surface of the ceramic substrate 10 together with the first deposition conductive layer 21.
- the second deposition process S220 is formed by depositing the second deposition electrode layer 32 on the first deposition electrode layer 31 together with the second deposition conductive layer 22.
- the plating electrode layer 33 is formed by plating on the second deposition electrode layer 32 together with the conductor 20.
- the electrode layer 30 for forming a circuit pattern on both surfaces of the ceramic substrate 10 may be formed by performing a plating process (S230) while masking both surfaces of the ceramic substrate 10 through a separate process. To reveal.
- the first deposition electrode layer 31 and the second deposition electrode layer 32 formed around the via hole 11 on both surfaces of the ceramic substrate 10 may be removed by etching as necessary.
- the plating body 23 is formed in the via hole 11 by one of electroplating and electroless plating.
- the plating member 23 is one selected from copper (Cu), silver (Ag), gold (Au), and aluminum (Al), or copper (Cu), silver (Ag), gold (Au), and aluminum (Al). It is an example that the alloy containing at least one selected from.
- the plating process (S230) reveals that any material capable of forming a plate 23 for electrically connecting a circuit pattern formed on both surfaces of the ceramic substrate 10 in the via hole 11 by plating can be used. Put it.
- pores or cavities may be formed in the plated body 23.
- the via hole 11 has a shape in which the diameter gradually decreases from one surface to the other surface, more pores or cavities may be formed in the plated body 23. This is because pores or cavities in the plated body 23 are more easily generated by plating the smaller diameter part first and the larger diameter part later.
- the ceramic substrate 10 is disposed in the vacuum chamber in a vacuum state, and the conductor 20 is heated to melt.
- the melting may include melting and curing the melted conductor 20 by cooling.
- the vacuum melting step S300 removes pores or cavities formed in the conductor 20 so that the conductor 20 is completely filled in the via hole 11.
- Vacuum melting step (S300) is a vacuum melting of the plated body 23, for example, if the plated body 23 is copper by melting the heating plated body 23 to 800 ⁇ 1200 °C.
- Vacuum melting step (S300) is to remove the pores or cavities in the conductor 20 by melting (that is, melting) by heating the conductor 20 above the melting point in a vacuum state.
- the electrode layer 30 may be formed after the vacuum melting step S300.
- the method may further include grinding and planarizing (not shown).
- FIG 3 is a cross-sectional view showing an embodiment of a via hole filler of a ceramic substrate according to the present invention.
- the via hole filler of the ceramic substrate filled using the via hole filling method of the ceramic substrate according to the present invention includes a conductor 20 filled in the via hole 11 of the ceramic substrate 10. At this time, the conductor 20 has a melting structure that is cured again after the metal is melted.
- the conductor 20 is deposited on the inner circumferential surface of the via hole 11, and the second deposition conductive layer 22 is formed on the first deposition conductive layer 21 and the first deposition conductive layer 21. And a plated body 23 formed in the via hole 11.
- the plating member 23 is bonded to the second deposition conductive layer 22 and filled in the via hole 11 as an example.
- the via hole filler of the ceramic substrate according to the present invention includes electrode layers 30 formed on both surfaces of the ceramic substrate 10 to form circuit patterns, respectively.
- the electrode layer 30 is the first deposition electrode layer 31 deposited on both surfaces of the ceramic substrate 10, and the second deposition electrode layer 32 deposited on the first deposition electrode layer 31 on both surfaces of the ceramic substrate 10. And a plating electrode layer 33 plated on the second deposition electrode layer 32.
- the conductor 20 is formed to completely fill the via hole 11 so that there is no pore or cavity therein.
- the embodiment of the present invention can simply fill the via hole 11 of the ceramic substrate without pores by vacuum melting the conductor 20 in the via hole 11, thereby simplifying the manufacturing process of the ceramic substrate and reducing the manufacturing cost.
- the via hole 11 of the silver ceramic substrate is completely filled without pores to improve the operation reliability of the ceramic substrate, and to ensure stable operation reliability when used in a high power semiconductor module.
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- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
Claims (14)
- 세라믹 기재에 비아홀을 형성하는 비아홀 형성단계;상기 비아홀 내에 도전체를 형성하는 도전체 형성단계; 및진공 상태에서 상기 도전체를 멜팅시키고 다시 냉각시키는 진공 멜팅단계를 포함하는 것을 특징으로 하는 세라믹 기판의 비아홀 충진 방법.
- 제1항에 있어서,상기 비아홀 형성단계는 레이저 가공을 통해 상기 세라믹 기재의 양면을 관통하는 비아홀을 형성하는 것을 특징으로 하는 세라믹 기판의 비아홀 충진 방법.
- 제1항에 있어서,상기 비아홀은 일면에서 다른 면으로 갈수록 직경이 점차 작아지게 형성되는 것을 특징으로 하는 세라믹 기판의 비아홀 충진 방법.
- 제1항에 있어서,상기 도전체 형성단계는,상기 비아홀의 내주면에 물리증착법으로 제1증착 도전층을 형성하는 제1증착과정;상기 비아홀의 내부에서 상기 제1증착 도전층 상에 물리증착법으로 제2증착 도전층을 형성하는 제2증착과정; 및상기 비아홀 내에 도금으로 도금체를 형성하는 도금과정을 포함하며,상기 진공 멜팅단계는 상기 도금체를 진공 멜팅시키는 것을 특징으로 하는 세라믹 기판의 비아홀 충진 방법.
- 제4항에 있어서,상기 물리증착법은 진공증착, 열증착(Evaporation), 이빔(ebeam)증착, 레이저(laser) 증착, 스퍼터링(Sputtering) 및 아크이온플레이팅(Arc Ion Plating) 중 선택된 하나인 것을 특징으로 하는 세라믹 기판의 비아홀 충진 방법.
- 제4항에 있어서,상기 제1증착과정은 상기 제1증착 도전층과 함께 상기 세라믹 기재의 일면에 제1증착 전극층을 증착하여 형성하고, 상기 제2증착과정은 상기 제2증착 도전층과 함께 상기 제1증착 전극층 상에 제2증착 전극층을 증착하여 형성하고, 상기 도금과정은 상기 도전체와 함께 상기 제2증착 전극층 상에 도금 전극층을 도금으로 형성하여 상기 세라믹 기재의 양면에 각각 회로패턴 형성을 위한 전극층을 함께 형성하는 것을 특징으로 하는 세라믹 기판의 비아홀 충진 방법.
- 제1항에 있어서,상기 도전체를 형성하는 단계는 상기 세라믹 기재의 양면에 각각 회로패턴 형성을 위한 전극층을 함께 형성하는 것을 특징으로 하는 세라믹 기판의 비아홀 충진 방법.
- 제6항 또는 제7항에 있어서,상기 진공 멜팅단계 이후에 상기 전극층을 연마하여 평탄화하는 단계를 더 포함하는 것을 특징으로 하는 세라믹 기판의 비아홀 충진 방법.
- 세라믹 기재의 비아홀 내에 충진되는 도전체를 포함하는 세라믹 기판의 비아홀 충진체이며,상기 도전체는 금속이 멜팅된 후 다시 경화된 멜팅조직을 가지는 것을 특징으로 하는 세라믹 기판의 비아홀 충진체.
- 제9항에 있어서,상기 도전체는 상기 비아홀 내부를 완전히 채우게 형성되는 것을 특징으로 하는 세라믹 기판의 비아홀 충진체.
- 제9항에 있어서,상기 도전체는 상기 비아홀의 내주면에 증착되어 형성되는 제1증착 도전층, 상기 제1증착 도전층 상에 증착되어 형성되는 제2증착 도전층, 및 상기 비아홀 내에 형성되는 도금체를 포함하고,상기 도금체는 상기 제2증착 도전층과 맞붙어 상기 비아홀 내에 충진되며, 금속이 멜팅된 후 다시 경화된 멜팅조직을 가지는 것을 특징으로 하는 세라믹 기판의 비아홀 충진체.
- 제9항에 있어서,상기 세라믹 기재의 양면에 각각 회로패턴 형성을 위해 형성되는 전극층을 포함하는 것을 특징으로 하는 세라믹 기판의 비아홀 충진체.
- 제12항에 있어서,상기 전극층은,상기 세라믹 기재의 양면에 각각 증착된 제1증착 전극층;상기 세라믹 기재의 양면에서 상기 제1증착 전극층 상에 증착된 제2증착 전극층; 및상기 제2증착 전극층 상에 도금된 도금 전극층을 포함하는 것을 특징으로 하는 세라믹 기판의 비아홀 충진체.
- 제9항에 있어서,상기 비아홀은 일면에서 다른 면으로 갈수록 직경이 점차 작아지게 형성되는 것을 특징으로 하는 세라믹 기판의 비아홀 충진체.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/082,931 US20190096696A1 (en) | 2016-03-08 | 2017-03-08 | Method for filling via hole of ceramic substrate and ceramic substrate via hole filler formed thereby |
| CN201780027568.4A CN109075125B (zh) | 2016-03-08 | 2017-03-08 | 用于填充陶瓷衬底的通孔的方法以及由此形成的陶瓷衬底通孔填充物 |
| JP2018547348A JP6645678B2 (ja) | 2016-03-08 | 2017-03-08 | セラミック基板のビアホール充填方法及びこれを用いて充填されたセラミック基板のビアホール充填体 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2016-0027539 | 2016-03-08 | ||
| KR1020160027539A KR102504238B1 (ko) | 2016-03-08 | 2016-03-08 | 세라믹 기판의 비아홀 충진 방법 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017155310A1 true WO2017155310A1 (ko) | 2017-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2017/002529 Ceased WO2017155310A1 (ko) | 2016-03-08 | 2017-03-08 | 세라믹 기판의 비아홀 충진 방법 및 이를 이용하여 충진된 세라믹 기판의 비아홀 충진체 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190096696A1 (ko) |
| JP (1) | JP6645678B2 (ko) |
| KR (1) | KR102504238B1 (ko) |
| CN (1) | CN109075125B (ko) |
| WO (1) | WO2017155310A1 (ko) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190048111A (ko) * | 2017-10-30 | 2019-05-09 | 주식회사 아모센스 | 양면 세라믹 기판 제조방법, 그 제조방법에 의해 제조되는 양면 세라믹 기판 및 이를 포함하는 반도체 패키지 |
| TWI843121B (zh) * | 2022-06-10 | 2024-05-21 | 旭德科技股份有限公司 | 散熱基板 |
| CN115966472B (zh) * | 2022-12-21 | 2025-12-23 | 福建闽航电子有限公司 | 一种陶瓷外壳封装体的制造方法及陶瓷外壳封装体 |
| US20250100081A1 (en) | 2023-09-27 | 2025-03-27 | Nichia Corporation | Method of producing substrate |
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| US20060246721A1 (en) * | 2005-04-29 | 2006-11-02 | Axel Preusse | Technique for forming interconnect structures with reduced electro and stress migration and/or resistivity |
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- 2016-03-08 KR KR1020160027539A patent/KR102504238B1/ko active Active
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2017
- 2017-03-08 US US16/082,931 patent/US20190096696A1/en not_active Abandoned
- 2017-03-08 WO PCT/KR2017/002529 patent/WO2017155310A1/ko not_active Ceased
- 2017-03-08 JP JP2018547348A patent/JP6645678B2/ja active Active
- 2017-03-08 CN CN201780027568.4A patent/CN109075125B/zh active Active
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| US20060246721A1 (en) * | 2005-04-29 | 2006-11-02 | Axel Preusse | Technique for forming interconnect structures with reduced electro and stress migration and/or resistivity |
| KR20090110712A (ko) * | 2008-04-18 | 2009-10-22 | 성균관대학교산학협력단 | 알루미늄 호일을 이용한 관통형 전극 형성방법 |
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| US20110079418A1 (en) * | 2009-10-02 | 2011-04-07 | Ibiden Co., Ltd. | Ceramic wiring board and method of manufacturing thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102504238B1 (ko) | 2023-03-02 |
| KR20170104757A (ko) | 2017-09-18 |
| JP2019511115A (ja) | 2019-04-18 |
| JP6645678B2 (ja) | 2020-02-14 |
| CN109075125B (zh) | 2023-08-25 |
| CN109075125A (zh) | 2018-12-21 |
| US20190096696A1 (en) | 2019-03-28 |
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