JP3886513B2 - フィルム基板およびその製造方法 - Google Patents
フィルム基板およびその製造方法 Download PDFInfo
- Publication number
- JP3886513B2 JP3886513B2 JP2004339695A JP2004339695A JP3886513B2 JP 3886513 B2 JP3886513 B2 JP 3886513B2 JP 2004339695 A JP2004339695 A JP 2004339695A JP 2004339695 A JP2004339695 A JP 2004339695A JP 3886513 B2 JP3886513 B2 JP 3886513B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- film substrate
- photoresist
- conductor wiring
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000000758 substrate Substances 0.000 title claims description 189
- 238000004519 manufacturing process Methods 0.000 title claims description 39
- 239000004020 conductor Substances 0.000 claims description 332
- 239000004065 semiconductor Substances 0.000 claims description 90
- 229920002120 photoresistant polymer Polymers 0.000 claims description 80
- 230000003014 reinforcing effect Effects 0.000 claims description 62
- 239000002184 metal Substances 0.000 claims description 28
- 238000007747 plating Methods 0.000 claims description 19
- 239000010953 base metal Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 238000005530 etching Methods 0.000 claims description 8
- 239000010408 film Substances 0.000 description 209
- 238000000034 method Methods 0.000 description 53
- 238000005452 bending Methods 0.000 description 10
- 229910000679 solder Inorganic materials 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011888 foil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
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- H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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Description
図6において、26がフィルム基板であり、このフィルム基板26は、主たる要素として、柔軟な絶縁性のフィルム基材1とそのフィルム基材1の面上に形成された導体配線部23から形成されており、また導体配線部23において他の部品が接続されず折り曲げ可能な部分(折り曲げ部)25にソルダーレジスト11が形成されている。前記導体配線部23に、搭載する半導体素子13の電極パッド24が接続される。
また半導体素子の電極との接続部の導体配線厚が、フィルム基板上外部接続部とともに、導体配線における折り曲げ部の導体配線厚より厚くなることにより、この厚い部分は突起電極の代わりを果たすことができ、半導体素子側に突起電極を形成する工程を省くことができる。
また絶縁膜は、導体配線における半導体素子の電極との接続部およびフィルム基板上外部接続部以外の領域の強度を確保することができ、また半導体素子の電極との接続部および前記フィルム基板上外部接続部の厚さより薄くしたことにより、画像表示用フラットパネル基板への接合時、または半導体素子との接続時に絶縁膜の反発力の影響を受けずに信頼性の高い接合・接続を実現できる。
また半導体素子との接続部において、フィルム基板上外部接続部とともに、導体配線上にさらに導体配線が形成され、半導体素子との接続部の導体配線厚が他の箇所の導体配線部の導体配線厚より厚くなる。
またフォトレジストにより、フィルム基板の実装時またはその後に導体配線厚の変化部に集中する応力を緩和し、強度を確保することができ、また導体配線における半導体素子との接続部およびフィルム基板上外部接続部以外の領域では、半導体素子との接続部およびフィルム基板上外部接続部の厚さより薄くしたことにより、画像表示用フラットパネル基板への接合時、または半導体素子との接続時にフォトレジストの反発力の影響を受けずに信頼性の高い接合・接続を実現できる。
またフィルム搬送用フィルム孔の補強用導体部位置の第1の導体上にさらに第2の導体を形成することにより、フィルム基板を搬送するためのフィルム搬送用フィルム孔の強度を増すことができ、また半導体素子の電極との接続部およびフィルム基板上外部接続部以外の箇所より厚くなることから、フィルム搬送時のフィルム孔の強度が高く安定した生産が可能となる。
図1は本発明の実施の形態におけるフィルム基板の一部を示す断面図である。
図2(a)〜(e)は本発明におけるフィルム基板の製造方法(第1の方法)の製造工程を順に示す、フィルム基板FBの一部を示す平面図、およびそのX−X′の位置に対応した断面図である。
第1工程
まず、図2(b)に示すように、第1の導体配線2(導体配線23)および第1の補強用導体32が形成されたフィルム基材1の面上にフォトレジスト6を形成する。
第2工程
続いて、図2(c)に示すように、フィルム基板上外部接続部4位置および半導体素子13との接続部5位置、さらに補強用導体部33位置に、フォトレジスト6に開口部を形成して第1の導体配線2の一部および第1の補強用導体32を露出させる。
第3工程
次に、図2(d)に示すように、金属めっきを施すことにより、フォトレジスト6の開口部における第1の導体配線2上に第2の導体配線3を形成し、第1の補強用導体32上に第2の補強用導体34を形成する。
第4工程
次に、図2(e1)に示すようにフォトレジスト6を除去する。
なお、上記第4工程では、フォトレジスト6を全て除去しているが、フォトレジスト6が折り曲げに対して十分に柔軟性を有している場合には、図2(e2)に示すように、全てを除去せずに、導体配線23における半導体素子13との接続部5およびフィルム基板上外部接続部4以外の領域を、半導体素子13との接続部5およびフィルム基板上外部接続部4の厚さより薄い絶縁膜(フォトレジスト6)で覆うようにしてもよい。これにより、導体配線23における半導体素子13との接続部5およびフィルム基板上外部接続部4以外の領域の強度を、フォトレジスト6によって確保することができ(ソルダーレジストの役割を担うことができ)、また前記のように厚さを薄くしたことにより、画像表示用フラットパネル基板16への接合時、または半導体素子13との接続時にフォトレジスト6の反発力の影響を受けずに信頼性の高い接合・接続を実現できる。
(第2の製造方法)
図3(a)〜(i)は本発明におけるフィルム基板の製造方法(第2の方法)の製造工程を順に示す、フィルム基板FBの一部を示す平面図、およびそのY−Y′の位置に対応した断面図である。
第1工程
まず、図3(b)に示すように、下地金属7の設けられたフィルム基材1の面上に第1のフォトレジスト6を形成する。
第2工程
続いて、図3(c)に示すように、半導体素子13を搭載する導体配線23位置およびフィルム搬送用フィルム孔31が形成された補強用導体部33位置に、第1のフォトレジスト6に開口部を形成して下地金属7を一部露出する。
第3工程
次に、図3(d)に示すように、金属めっきを施すことにより第1のフォトレジスト6の開口部に第1の導体配線2(半導体素子13の導体配線23)および第1の補強用導体32を形成する。
第4工程
次に、図3(e)に示すように、第2のフォトレジスト8を第1の導体配線2および第1の補強用導体32が設けられたフィルム基板面に形成する。
第5工程
続いて、図3(f)に示すように、フィルム基板上外部接続部4位置および半導体素子13との接続部5位置、さらに補強用導体部33位置に、フォトレジスト8に開口部を形成して第1の導体配線2の一部および第1の補強用導体32を露出させる。
第6工程
次に、図3(g)に示すように、金属めっきを施すことにより第2のフォトレジスト8の開口部における第1の導体配線2の一部上に第2の導体配線3を形成し、第1の補強用導体32上に第2の補強用導体34を形成する。
第7工程
次に、図3(h)に示すように、第1のフォトレジスト6及び第2のフォトレジスト8を除去する。
第8工程
次に、図3(i)に示すように、第1の導体配線2間の下地金属7をエッチングすることによって、各導体配線2,3を電気的に分離する。
(第3の製造方法)
図4(a)〜(i)は本発明におけるフィルム基板の製造方法(第3の方法)の製造工程を順に示す、フィルム基板FBの一部を示す平面図、およびそのX−X′の位置に対応した断面図である。
第1工程
まず、図4(b)に示すように、第1の導体9の設けられたフィルム基材1の面上に第1のフォトレジスト6を形成する。
第2工程
続いて、図4(c)に示すように、フィルム基板上外部接続部4位置および半導体素子13との接続部5位置、さらにフィルム搬送用フィルム孔31が形成された補強用導体部33位置に、第1のフォトレジスト6に開口部を形成して第1の導体9の一部を露出させる。
第3工程
次に、図4(d)に示すように、金属めっきを施すことにより第1のフォトレジスト6の開口部における第1の導体9上に第2の導体10を形成する。
第4工程
次に、図4(e)に示すように、第1のフォトレジスト6を除去する。
第5工程
次に、図4(f)に示すように、第2の導体10の設けられた面上に第2のフォトレジスト8を形成する。
第6工程
続いて、図4(g)に示すように、半導体素子13を接続する導体配線23以外の位置および補強用導体部33以外の位置に、第2のフォトレジスト8に開口部を形成する。
第7工程
次に、図4(h)に示すように、第2のフォトレジスト8の開口部の第1の導体9及び第2の導体10をエッチングすることにより導体配線を形成する。
第8工程
続いて、図4(i)に示すように、第2のフォトレジスト8を除去する。残された第1の導体9が導体配線23の第1の導体2に、第2の導体10が導体配線23の第2の導体3となる。また補強用導体部33において、残された第1の導体9が第1の補強用導体32に、第2の導体10が第2の補強用導体34となる。
さらに、以上の構造を有したフィルム基板、すなわち導体配線23においてフィルム基板上外部接続部4および半導体素子13との接続部(搭載部)5の導体配線厚を、折り曲げ部25の導体配線厚よりも厚くしたフィルム基板FBに、半導体素子13を搭載し、画像表示用フラットパネル基板16に実装したものは、外部接続部4は導体配線厚が厚いため、接合部におけるフィルム基材1と画像表示用フラットパネル基板16の間隔を十分に確保できるため絶縁性を確保し、また折り曲げ部25は導体配線厚が薄いため折り曲げ強度を確保した信頼性の高い画像表示装置を実現できる。
[他の実施の形態]
上記実施の形態では、図1に示すように、フィルム基板FBの折り曲げ部25(フィルム基材1に形成された導体配線部23上で、画像表示用フラットパネル基板16へ実装されるときに折り曲げられる折り曲げ部)が開放された状態となっているが、図5に示すように、このフィルム基板FBの折り曲げ部25上に、従来の技術と同様にソルダーレジスト(絶縁膜の一例)11を形成し、折り曲げ部25をソルダーレジスト11で覆うようにすることもできる。このように、少なくとも折り曲げ部25を、ソルダーレジスト11で覆うことにより、折り曲げ部25の強度をさらに向上することができる。
1 フィルム基材
2 第1の導体配線
3 第2の導体配線
4 フィルム基板上外部接続部(画像表示パネルとの接続部)
5 半導体素子との接続部
6 第1のフォトレジスト
7 下地金属
8 第2のフォトレジスト
9 第1の導体
10 第2の導体
11 ソルダーレジスト
13 半導体素子
15 画像表示パネルの電極
16 画像表示用フラットパネル基板
17 導電粒子
18 絶縁樹脂
19 ACF
20 プリント基板
21 プリント基板の電極
23 導体配線
24 半導体素子の電極
25 他の部品が接続されず折り曲げ可能な部分(折り曲げ部)
27 曲率半径
28 外部接続部の外部接続領域
29 外部接続部の外部接続領域以外の領域
31 フィルム搬送用フィルム孔
32 導体(第1の補強用導体)
33 補強用導体部
34 第2の補強用導体
Claims (7)
- フィルム基材上に導体配線が形成され、
前記導体配線は、前記フィルム基板が画像表示用フラットパネル基板へ実装されるときに折り曲げられる折り曲げ部を有し、
前記導体配線におけるフィルム基板上外部接続部の導体配線厚および半導体素子の電極との接続部の導体配線厚が、前記導体配線における前記折り曲げ部の導体配線厚より厚く形成され、
前記導体配線における前記半導体素子の電極との接続部および前記フィルム基板上外部接続部以外の領域が、前記半導体素子の電極との接続部および前記フィルム基板上外部接続部の厚さより薄い絶縁膜で覆われていること
を特徴とするフィルム基板。 - 半導体素子が接続される導体配線が形成されたフィルム基材を使用するフィルム基板の製造方法であって、
前記導体配線が形成されたフィルム基材面上にフォトレジストを形成し、
次に、フィルム基板上外部接続部位置および前記半導体素子との接続部位置に、前記フォトレジストに開口部を形成して前記導体配線の一部を露出させ、
次に、金属めっきを施すことにより前記フォトレジストの開口部における導体配線上にさらに導体配線を形成し、
次に、前記フォトレジストを除去するとき、全てのフォトレジストを除去せずに、前記導体配線における前記半導体素子との接続部および前記フィルム基板上外部接続部以外の領域では、前記金属めっきを施した前記フィルム基板上外部接続部および前記半導体素子との接続部の厚さより薄くフォトレジストを残すこと
を特徴とするフィルム基板の製造方法。 - 前記フィルム基材には、フィルム搬送用フィルム孔の補強用導体が配置されており、
前記フォトレジストに開口部を形成するとき、前記補強用導体部位置も開口し、金属めっきを施すことにより補強用導体部にさらに導体を形成すること
を特徴とする請求項2に記載のフィルム基板の製造方法。 - 少なくとも片面全面が下地金属で覆われたフィルム基材を使用して半導体素子が搭載されるフィルム基板を製造する方法であって、
前記下地金属の設けられたフィルム基材面上に第1のフォトレジストを形成し、
次に、前記第1のフォトレジストに開口部を形成して前記下地金属を一部露出し、
次に、金属めっきを施すことにより前記第1のフォトレジストの開口部に第1の導体配線を形成し、
続いて、この第1の導体配線の設けられた面上に前記第2のフォトレジストを形成し、
次に、フィルム基板上外部接続部位置に、前記第2のフォトレジストに開口部を形成して前記第1の導体配線の一部を露出させ、
次に、金属めっきを施すことにより前記第2のフォトレジストの開口部における前記第1の導体配線上に第2の導体配線を形成し、
続いて、前記第1のフォトレジストおよび前記第2のフォトレジストを除去し、
次に、エッチングにより前記第1の導体配線間の前記下地金属を除去し、前記第1の導体配線をそれぞれ電気的に分離すること
を特徴とするフィルム基板の製造方法。 - 前記第2のフォトレジストに開口部を形成するとき、前記半導体素子との接続部位置も開口し、金属めっきを施すことにより半導体素子との接続部の第1の導体配線上に第2の導体配線を形成すること
を特徴とする請求項4に記載のフィルム基板の製造方法。 - 前記第1のフォトレジストに開口部を形成するとき、フィルム搬送用フィルム孔の補強用導体部位置も開口し、金属めっきを施すことにより前記補強用導体部位置に導体を形成し、
前記第2のフォトレジストに開口部を形成するとき、前記補強用導体部位置も開口し、金属めっきを施すことにより補強用導体部位置にさらに導体を形成すること
を特徴とする請求項4または請求項5に記載のフィルム基板の製造方法。 - 少なくとも片面全面が第1の導体で覆われたフィルム基材を使用して半導体素子が搭載されるフィルム基板を製造する方法であって、
前記第1の導体の設けられたフィルム基材面上に第1のフォトレジストを形成し、
次に、半導体素子が接続される導体配線におけるフィルム基板上外部接続部位置およびフィルム搬送用フィルム孔の補強用導体部位置に、前記第1のフォトレジストに開口部を形成して、前記第1の導体の一部を露出させ、
次に、金属めっきを施すことにより前記第1のフォトレジストの開口部におけるフィルム基板上外部接続部位置および前記補強用導体部位置の第1の導体上に第2の導体を形成し、
次に、前記第1のフォトレジストを除去し、
続いて、前記第2の導体の設けられた面上に第2のフォトレジストを形成し、
次に、前記半導体素子が接続される導体配線以外の位置に、前記第2のフォトレジストに開口部を形成し、
次に、前記第2のフォトレジストの開口部の前記第1の導体および前記第2の導体をエッチングすることにより前記導体配線を形成し、
前記第2のフォトレジストを除去すること
を特徴とするフィルム基板の製造方法。
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JP2004339695A JP3886513B2 (ja) | 2004-02-02 | 2004-11-25 | フィルム基板およびその製造方法 |
US11/043,946 US7425766B2 (en) | 2004-02-02 | 2005-01-28 | Film substrate, fabrication method thereof, and image display substrate |
TW094102834A TWI287822B (en) | 2004-02-02 | 2005-01-31 | Film substrate and its manufacturing method |
KR1020050009058A KR100689681B1 (ko) | 2004-02-02 | 2005-02-01 | 필름기판 및 그 제조방법과 화상표시용 기판 |
US12/230,511 US7833910B2 (en) | 2004-02-02 | 2008-08-29 | Film substrate, fabrication method thereof, and image display substrate |
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JP2004024948 | 2004-02-02 | ||
JP2004339695A JP3886513B2 (ja) | 2004-02-02 | 2004-11-25 | フィルム基板およびその製造方法 |
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JP (1) | JP3886513B2 (ja) |
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TW (1) | TWI287822B (ja) |
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EP1560221B1 (en) * | 2004-01-29 | 2008-09-03 | Sharp Kabushiki Kaisha | Semiconductor memory device |
JP4968665B2 (ja) * | 2006-04-18 | 2012-07-04 | Nltテクノロジー株式会社 | フラットディスプレイパネル及び接続構造 |
KR101148099B1 (ko) * | 2010-10-01 | 2012-05-23 | 엘지이노텍 주식회사 | 탭 테이프 및 그 제조방법 |
DE102012213566A1 (de) * | 2012-08-01 | 2014-02-06 | Robert Bosch Gmbh | Verfahren zum Herstellen eines Bondpads zum Thermokompressionsbonden und Bondpad |
TW201417363A (zh) * | 2012-10-19 | 2014-05-01 | Ultimate Image Corp | 有機發光二極體照明裝置 |
KR20140123852A (ko) * | 2013-04-15 | 2014-10-23 | 삼성디스플레이 주식회사 | 칩 온 필름 및 이를 포함하는 표시 장치 |
JP5842859B2 (ja) * | 2013-04-15 | 2016-01-13 | 株式会社村田製作所 | 多層配線基板およびこれを備えるモジュール |
KR102055194B1 (ko) * | 2013-05-06 | 2019-12-12 | 삼성전자주식회사 | 표시 장치 |
CN104363710B (zh) * | 2014-11-12 | 2017-06-06 | 皆利士多层线路版(中山)有限公司 | 一种线路板的生产方法 |
CN204884440U (zh) * | 2015-08-27 | 2015-12-16 | 京东方科技集团股份有限公司 | 柔性显示面板和柔性显示装置 |
KR102257253B1 (ko) * | 2015-10-06 | 2021-05-28 | 엘지이노텍 주식회사 | 연성기판 |
KR20200099223A (ko) * | 2019-02-13 | 2020-08-24 | 삼성디스플레이 주식회사 | 표시 장치 및 이의 제조 방법 |
TWI693682B (zh) * | 2019-08-28 | 2020-05-11 | 財團法人工業技術研究院 | 電子元件封裝結構 |
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JPH0595208A (ja) | 1991-03-06 | 1993-04-16 | Minnesota Mining & Mfg Co <3M> | フイルムキヤリア |
JP3306996B2 (ja) | 1993-06-02 | 2002-07-24 | セイコーエプソン株式会社 | フレキシブル基板の製造方法 |
EP1796446B1 (en) * | 1996-11-20 | 2011-05-11 | Ibiden Co., Ltd. | Printed circuit board |
JP3063831B2 (ja) * | 1997-08-11 | 2000-07-12 | 日本電気株式会社 | 表示装置及びその製造方法 |
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JP2002032031A (ja) * | 2000-05-12 | 2002-01-31 | Seiko Epson Corp | 電気光学装置の製造方法、端子の接続方法、電気光学装置および電子機器 |
JP2002026055A (ja) | 2000-07-12 | 2002-01-25 | Seiko Epson Corp | 半導体装置及びその製造方法 |
JP3739640B2 (ja) * | 2000-08-28 | 2006-01-25 | シャープ株式会社 | 液晶モジュールの製造方法 |
JP4249399B2 (ja) | 2001-01-24 | 2009-04-02 | セイコーエプソン株式会社 | 可撓性基板およびそれを用いた表示装置 |
JP3726891B2 (ja) | 2001-10-05 | 2005-12-14 | 三井金属鉱業株式会社 | 電子部品実装用フィルムキャリアテープの実装構造および電子部品実装用フィルムキャリアテープの製造方法 |
JP2003142535A (ja) | 2001-10-31 | 2003-05-16 | Optrex Corp | フレキシブル配線基板およびその製造方法 |
JP2003203951A (ja) | 2001-11-05 | 2003-07-18 | Puroii:Kk | フィルムテープキャリア |
JP3750113B2 (ja) * | 2002-03-25 | 2006-03-01 | 三井金属鉱業株式会社 | 電子部品実装用フィルムキャリアテープ及びその製造方法 |
JP3726961B2 (ja) * | 2002-06-26 | 2005-12-14 | 三井金属鉱業株式会社 | Cofフィルムキャリアテープ及びその製造方法 |
JP4052915B2 (ja) * | 2002-09-26 | 2008-02-27 | 三洋電機株式会社 | 回路装置の製造方法 |
JP2004281947A (ja) | 2003-03-18 | 2004-10-07 | Mitsui Mining & Smelting Co Ltd | 電子部品実装用フィルムキャリアテープの製造方法及びスペーサテープ |
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Also Published As
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US7425766B2 (en) | 2008-09-16 |
KR20050078646A (ko) | 2005-08-05 |
US20090011591A1 (en) | 2009-01-08 |
KR100689681B1 (ko) | 2007-03-08 |
JP2005252227A (ja) | 2005-09-15 |
TW200603210A (en) | 2006-01-16 |
TWI287822B (en) | 2007-10-01 |
US20050167803A1 (en) | 2005-08-04 |
US7833910B2 (en) | 2010-11-16 |
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