JP5642062B2 - テイラードレーザパルスによるレーザ穴あけのための方法及び装置 - Google Patents
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
- B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0017—Etching of the substrate by chemical or physical means
- H05K3/0026—Etching of the substrate by chemical or physical means by laser ablation
- H05K3/0032—Etching of the substrate by chemical or physical means by laser ablation of organic insulating material
- H05K3/0035—Etching of the substrate by chemical or physical means by laser ablation of organic insulating material of blind holes, i.e. having a metal layer at the bottom
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/16—Composite materials, e.g. fibre reinforced
- B23K2103/166—Multilayered materials
- B23K2103/172—Multilayered materials wherein at least one of the layers is non-metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/30—Organic material
- B23K2103/42—Plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/52—Ceramics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
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Description
Claims (13)
- 導電材料の層及び絶縁材料の層を有する電子基板にブラインドビアを形成する改善された方法であって、レーザによってレーザパルスを生成するステップと、光学素子によって前記レーザパルスを変更するステップと、前記レーザパルスを、前記電子基板に衝突するように方向付けるステップとを有し、前記変更され、方向付けられたレーザパルスは、パルスパラメータで定義される方法において、更に、
前記パルスパラメータの少なくとも1つを選択するステップと、
前記レーザによって、前記光学素子と連携して、前記少なくとも1つの選択されたパルスパラメータに一致する少なくとも1つのレーザパルスを生成するステップと、
前記少なくとも1つのレーザパルスを方向付けて、前記ブラインドビアを画定する前記電子基板の意図されたボリュームから、前記ブラインドビアの付近の基板に実質的なダメージを引き起こすことなく、絶縁材料を除去して、底部を有する前記ブラインドビアを穴あけするステップであって、前記選択されたパルスパラメータの少なくとも1つは、1乃至100ナノ秒のパルス幅を有する少なくとも1つのテイラードパルスの適用であり、前記テイラードパルスは、前記レーザパルスの平均パワーの20%を超え、継続時間が前記レーザパルスの継続時間の50%未満であるピークパワーによって特徴付けられる少なくとも1つのパワースパイクを含み、前記パワースパイクは、前記ブラインドビアの前記底部における前記導電材料から、前記絶縁材料のスミアを除去するのに十分なピークパワーを有し、かつ、前記ブラインドビアの前記底部に逆テーパーを形成させない十分に短い継続期間を有するステップと、
前記テイラードパルスの前及び/又は後に、材料除去を可能とする閾値より下のエネルギーを有するインキュベーションパルスを少なくとも1つ配置するステップと
を有する方法。 - 前記インキュベーションパルスは、前記テイラードパルスの前記平均パワーの50%未満のピークパワーを有する、請求項1記載の方法。
- 前記少なくとも1つの選択されたパルスパラメータは、パルスのフルーエンスであり、
前記フルーエンスは、0.1乃至10.0J/cm2である請求項1又は2記載の方法。 - 前記レーザはCO 2 レーザである、請求項1記載の方法。
- 前記テイラードパルスは立ち上がりエッジ及び立ち下りエッジを有し、前記パワースパイクは前記立ち上がりエッジよりも立ち下りエッジの近傍にある、請求項1記載の方法。
- 前記インキュベーションパルスは前記テイラードパルスとは異なる形状を有する、請求項1記載の方法。
- 前記インキュベーションパルスはガウス形状を有する、請求項1記載の方法。
- 前記光学素子によって前記レーザパルスを変更するステップは、前記レーザパルスを調整するために前記レーザの外部にレーザビーム調整光学素子を設けるステップと、前記レーザビーム調整光学素子によって前記レーザパルスを調整するステップとを有する、請求項1記載の方法。
- 前記レーザビーム調整光学素子は音響光学素子(AOM)を有する、請求項8記載の方法。
- 前記レーザビーム調整光学素子は電気光学素子(EOM)を有する、請求項8記載の方法。
- 少なくとも1つのレーザパルスによって電子基板にブラインドビアを形成する改善されたシステムであって、コントローラと、CO 2 レーザと、光学素子とを含み、前記基板が導電層及び絶縁層を有し、前記レーザパルスは、パルスパラメータによって定義されるシステムにおいて、
前記レーザ及び前記光学素子に動作的に接続され、前記パルスパラメータに一致する少なくとも1つのレーザパルスを生成し、前記少なくとも1つのレーザパルスを前記基板に方向付けるコントローラを備え、前記少なくとも1つのレーザパルスは、底部を有する前記ブラインドビアを画定する前記電子基板の意図されたボリュームから絶縁材料を除去し、前記少なくとも1つのパルスパラメータは、1乃至100ナノ秒のパルス幅を有する少なくとも1つのテイラードパルスであり、前記テイラードパルスは、前記パルスの平均パワーの20%を超え、継続時間が前記パルスの継続時間の50%未満であるピークパワーによって特徴付けられる少なくとも1つのパワースパイクを含み、更に
前記パワースパイクは、前記ブラインドビアの前記底部における前記導電材料から、前記絶縁材料のスミアを除去するのに十分なピークパワーを有し、かつ、前記ブラインドビアの前記底部に逆テーパーを形成させない十分に短い継続期間を有し、更に
前記テイラードパルスの前及び/又は後に配置される、材料除去を可能とする閾値より下のエネルギーを有するインキュベーションパルスを少なくとも1つ生成するシステム。 - 前記インキュベーションパルスは、前記テイラードパルスの前記平均パワーの50%未満のピークパワーを有する、請求項11記載のシステム。
- 前記少なくとも1つのパルスパラメータは、パルスのフルーエンスを含み、前記フルーエンスは、0.1乃至10.0J/cm2である請求項11又は12記載のシステム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US12/054,115 US7982161B2 (en) | 2008-03-24 | 2008-03-24 | Method and apparatus for laser drilling holes with tailored laser pulses |
US12/054,115 | 2008-03-24 | ||
PCT/US2009/037440 WO2009120542A2 (en) | 2008-03-24 | 2009-03-17 | Method and apparatus for laser drilling holes with tailored laser pulses |
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JP2011518670A JP2011518670A (ja) | 2011-06-30 |
JP5642062B2 true JP5642062B2 (ja) | 2014-12-17 |
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US (1) | US7982161B2 (ja) |
JP (1) | JP5642062B2 (ja) |
KR (2) | KR101659969B1 (ja) |
CN (1) | CN102007653B (ja) |
TW (1) | TWI474887B (ja) |
WO (1) | WO2009120542A2 (ja) |
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US7982161B2 (en) | 2011-07-19 |
KR20100136467A (ko) | 2010-12-28 |
TWI474887B (zh) | 2015-03-01 |
WO2009120542A3 (en) | 2009-12-23 |
CN102007653B (zh) | 2012-06-13 |
US20090236323A1 (en) | 2009-09-24 |
KR101659969B1 (ko) | 2016-09-26 |
WO2009120542A2 (en) | 2009-10-01 |
TW201000239A (en) | 2010-01-01 |
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