JP2005310815A - 電子部品、実装構造体、電気光学装置および電子機器 - Google Patents
電子部品、実装構造体、電気光学装置および電子機器 Download PDFInfo
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- JP2005310815A JP2005310815A JP2004121645A JP2004121645A JP2005310815A JP 2005310815 A JP2005310815 A JP 2005310815A JP 2004121645 A JP2004121645 A JP 2004121645A JP 2004121645 A JP2004121645 A JP 2004121645A JP 2005310815 A JP2005310815 A JP 2005310815A
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- electronic component
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- 238000004806 packaging method and process Methods 0.000 title abstract 2
- 239000011347 resin Substances 0.000 claims abstract description 111
- 229920005989 resin Polymers 0.000 claims abstract description 111
- 239000000758 substrate Substances 0.000 claims abstract description 63
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- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims 1
- 230000013011 mating Effects 0.000 abstract 2
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- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 239000011521 glass Substances 0.000 description 11
- 229920001187 thermosetting polymer Polymers 0.000 description 11
- 238000007789 sealing Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
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- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
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- 238000000576 coating method Methods 0.000 description 1
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Abstract
【解決手段】 能動面に形成されたパッド24を介して相手側基板に導電接続される電子部品121であって、能動面に形成された樹脂突起12と、樹脂突起12の表面に形成された導電膜20とによって、バンプ電極10が構成され、一のパッド24に対して、複数のバンプ電極10a,10bが導電接続されていることを特徴とする。
【選択図】 図3
Description
そこで、図9(b)に示すように、ICチップ21の能動面に樹脂突起12を形成し、その樹脂突起12の表面に導電膜20を形成して、バンプ電極10を構成する発明が提案されている(例えば、特許文献1参照)。なお、あらかじめICチップ21のパッド24の表面に絶縁膜26を形成し、その絶縁膜26の一部を開口することにより、パッド24の接続部22を形成しておく。そして、その接続部22に対してバンプ電極10の導電膜20を延設することにより、当該バンプ電極10をICチップ21の電極端子として機能させることができる。
また、上述した接続部22は、パッド24表面の絶縁膜26を開口して形成されるので、当該接続部22に絶縁膜が残存している場合などには、バンプ電極10とパッド24との導電接続が不可能になるおそれがある。
そして、これらの場合には、ICチップ21とガラス基板とを導電接続することが不可能になるという問題がある。したがって、冗長性の向上による導電接続の信頼性向上が技術的課題となっている。
また、電気的接続の信頼性に優れた電気光学装置および電子機器の提供を目的とする。
この構成によれば、複数の樹脂突起のうち一の樹脂突起の導電膜が剥離した場合でも、同じパッドに導電接続された他の導電膜により、相手側基板の電極端子との導電接続を確保することができる。したがって、冗長性に優れた電子部品を提供することができる。
この構成によれば、複数の電気的接続部のうち一の電気的接続部が導通不能となった場合でも、他の電気的接続部により当該導電膜とパッドとの導電接続を確保することが可能になる。したがって、冗長性に優れた電子部品を提供することができる。
また、能動面に形成されたパッドと、前記パッドを保護する保護膜上に形成された樹脂突起と、前記樹脂突起の表面に形成され、前記パッドとの電気的接続部を有する導電膜とを備え、前記導電膜を介して相手側基板に導電接続される電子部品であって、一の前記パッドに対して、複数の前記樹脂突起と、複数の前記導電膜が各々複数の前記電気的接続部とを有してなる、ことが望ましい。
この構成によれば、複数の電気的接続部のうち一の電気的接続部が導通不能となった場合でも、他の電気的接続部により当該導電膜とパッドとの導電接続を確保することが可能になる。また、複数の樹脂突起のうち一の樹脂突起の導電膜が剥離した場合でも、同じパッドに導電接続された他の導電膜により、相手側基板の電極端子との導電接続を確保することができる。さらに、一の樹脂突起における導電膜の剥離が、他の樹脂突起における導電膜の剥離を誘発することがない。したがって、冗長性に優れた電子部品を提供することができる。
なお、前記樹脂突起は、線状に連続する突条に形成された後、前記複数の導電膜の形成領域のみに分離して形成されていることが望ましい。
この構成によれば、樹脂突起の高さ寸法を精度よく形成することができるので、導電接続の信頼性に優れた電子機器を提供することができる。また、電気部品を相手側基板に実装する際に、封止樹脂の流れを確保することができる。
この構成によれば、小さな力で樹脂突起を弾性変形させることができるので、電子機器の破損を防止することができる。
この構成によれば、複数の樹脂突起のうち一の樹脂突起による相手側端子との導電接続が不可能であっても、他の樹脂突起により相手側端子との導電接続を確保することができる。したがって、冗長性に優れた電子部品を提供することができる。
上述した電子部品は冗長性に優れているので、電気的接続の信頼性に優れた電気光学装置を提供することができる。
この構成によれば、電気的接続の信頼性に優れた電子機器を提供することができる。
最初に、本発明の第1実施形態について説明する。
図1は、電気光学装置の一実施形態である液晶表示装置を示す模式図である。図示の液晶表示装置100は、液晶パネル110と、電子部品(液晶駆動用ICチップ)121とを有する。また、必要に応じて、図示しない偏光板、反射シート、バックライト等の付帯部材が適宜に設けられる。
液晶パネル110は、ガラスやプラスチックなどで構成される基板111及び112を備えている。基板111と基板112は相互に対向配置され、図示しないシール材などによって相互に貼り合わされている。基板111と基板112の間には図示しない電気光学物質である液晶が封入されている。基板111の内面上にはITO(Indium Tin Oxide)などの透明導電体で構成された電極111aが形成され、基板112の内面上には上記電極111aに対向配置される電極112aが形成されている。なお、電極111aおよび電極112aは直交するように配置されている。そして、電極111aおよび電極112aは基板張出部111Tに引き出され、その端部にはそれぞれ電極端子111bxおよび電極端子111cxが形成されている。また、基板張出部111Tの端縁近傍には入力配線111dが形成され、その内端部にも端子111dxが形成されている。
図3は本実施形態に係る電子部品の電極構造の説明図であり、図3(a)は図2のB部に相当する部分の拡大図であり、図3(b)は電子部品の底面図である。電子部品121は、例えばシリコン基板上に適宜の回路構成を形成してなる集積回路チップである。電子部品121の表面(図示下面)上には、アルミニウムなどで構成されたパッド24が形成されている。このパッド24は、電子部品121の周縁部に沿って配列形成されている。パッド24の表面には、SiNなどの絶縁材料からなるパッシペーション膜などの保護膜26が形成されている。そして、その保護膜26に形成された開口27により、パッド24との電気的接続部22が構成されている。
さらに導電膜20は、樹脂突起12a,12bの表面から接続部22に対して延設されている。これにより、一のパッド24に対して、複数のバンプ電極10a,10bが導電接続された状態となっている。
図4は、本実施形態に係る電子部品の実装構造の説明図であり、図2のB部における拡大図である。電子部品121は、熱硬化性樹脂からなる封止樹脂122を介して、基板111に実装されている。電子部品121の実装は、フィルム状またはシート状の封止樹脂122を基板111上に配置し、その基板111上に電子部品121を加熱しながら加圧することによって行う。その場合、電子部品121のバンプ電極10が、封止樹脂122を押し分けて進行し、基板111上の端子111bxに接触する。さらに電子部品を加圧することにより、樹脂突起12が押しつぶされて弾性変形する。そして、この状態で加熱を続け封止樹脂122を熱硬化させると、電子部品121と基板111との相対位置が固定され、樹脂突起12が弾性変形した状態で保持される。これにより、温度変化に伴って熱硬化性樹脂22bが熱膨張しても、バンプ電極10と端子111bxとの導電接触状態が保持されるので、電子部品121を基板111に対して確実に導電接続することができる。
また、複数のバンプ電極10a,10bを相手側基板111における一の端子111bxに導電接続する構成としたので、導電接続部の電気抵抗を低減することも可能になる。
次に、本発明の第2実施形態につき、図5を用いて説明する。
図5は、第2実施形態に係る電子部品の電極構造の説明図であり、図2のB部に相当する部分の拡大図である。第2実施形態に係る電子部品は、一のバンプ電極(例えば10a)が、複数の電気的接続部22x,22y,22zによりパッド24に導電接続されている点で、第1実施形態と異なっている。なお、第1実施形態と同様の構成となる部分については、同一の符号を付してその詳細な説明を省略する。
また、保護膜26の表面には、半球状の樹脂突起12が形成されている。図5では、各接続部22x,22y,22zの間にそれぞれ樹脂突起12a,12bが配置されている。
さらに、すべての樹脂突起12a,12bの表面を覆うように、一の導電膜20が形成されている。そして、樹脂突起12a,12bと導電膜20によりバンプ電極10a,10bが構成されている。
次に、本発明の第3実施形態につき、図6を用いて説明する。
図6は、第3実施形態に係る電子部品の電極構造の説明図であり、図6(a)は図2のB部に相当する部分の拡大図であり、図6(b)は電子部品の底面図である。第3実施形態に係る電子部品は、樹脂突起12(12r、12s)が線状に連続する突条に形成されている点、および導電膜20が複数に分離形成(20a,20b)され、それぞれパッド24に導電接続されている点で、第1実施形態および第2実施形態と異なっている。なお、第1実施形態および第2実施形態と同様の構成となる部分については、同一の符号を付してその詳細な説明を省略する。
そして、樹脂突起12r、12sの両側には保護膜26の開口が形成され、パッド24との接続部22w,22x,22y,22zが構成されている。
そして、電子部品121に形成された複数のバンプ電極10a,10bを、相手側基板111における一の端子111bxに導電接続する(図4参照)。
ところで、図4に示すように、電子部品121は熱硬化性樹脂からなる封止樹脂122を介して基板111に実装する。その際、あらかじめ突条の樹脂突起の一部を除去しておけば、封止樹脂122の流れを確保することができる。これにより、電子部品121を相手側基板111に対して確実に実装することができる。
図8は、本発明に係る電子機器の一例を示す斜視図である。この図に示す携帯電話1300は、上述した電気光学装置を小サイズの表示部1301として備え、複数の操作ボタン1302、受話口1303、及び送話口1304を備えて構成されている。
上述した電気光学装置は、上記携帯電話に限らず、電子ブック、パーソナルコンピュータ、ディジタルスチルカメラ、液晶テレビ、ビューファインダ型あるいはモニタ直視型のビデオテープレコーダ、カーナビゲーション装置、ページャ、電子手帳、電卓、ワードプロセッサ、ワークステーション、テレビ電話、POS端末、タッチパネルを備えた機器等々の画像表示手段として好適に用いることができ、いずれの場合にも電気的接続の信頼性に優れた電子機器を提供することができる。
Claims (10)
- 能動面に形成されたパッドと、前記パッドを保護する保護膜上に形成された樹脂突起と、前記樹脂突起の表面に形成され、前記パッドとの電気的接続部を有する導電膜とを備え、前記導電膜を介して相手側基板に導電接続される電子部品であって、
一の前記パッドに対して、複数の前記樹脂突起が形成されてなる、
ことを特徴とする電子部品。 - 能動面に形成されたパッドと、前記パッドを保護する保護膜上に形成された樹脂突起と、前記樹脂突起の表面に形成され、前記パッドとの電気的接続部を有する導電膜とを備え、前記導電膜を介して相手側基板に導電接続される電子部品であって、
一の前記パッドに対して、前記導電膜が複数の前記電気的接続部を有してなる、
ことを特徴とする電子部品。 - 能動面に形成されたパッドと、前記パッドを保護する保護膜上に形成された樹脂突起と、前記樹脂突起の表面に形成され、前記パッドとの電気的接続部を有する導電膜とを備え、前記導電膜を介して相手側基板に導電接続される電子部品であって、
一の前記パッドに対して、複数の前記樹脂突起と、前記導電膜が複数の前記電気的接続部とを有してなる、
ことを特徴とする電子部品。 - 能動面に形成されたパッドと、前記パッドを保護する保護膜上に形成された樹脂突起と、前記樹脂突起の表面に形成され、前記パッドとの電気的接続部を有する導電膜とを備え、前記導電膜を介して相手側基板に導電接続される電子部品であって、
一の前記パッドに対して、複数の前記樹脂突起と、複数の前記導電膜が各々複数の前記電気的接続部とを有してなる、
ことを特徴とする電子部品。 - 前記樹脂突起は、線状に連続する突条に形成されていることを特徴とする請求項1ないし請求項4のいずれかに記載の電子部品。
- 前記樹脂突起は、線状に連続する突条に形成された後、前記複数の導電膜の形成領域のみに分離して形成されていることを特徴とする請求項1ないし請求項4のいずれかに記載の電子部品。
- 前記樹脂突起は、半球状に形成されていることを特徴とする請求項1ないし請求項4のいずれかに記載の電子部品。
- 電子部品が相手側基板に実装されてなる実装構造体であって、
前記電子部品は、能動面に形成されたパッドと、前記パッドを保護する保護膜上に形成された樹脂突起と、前記樹脂突起の表面に形成され、前記パッドとの電気的接続部を有する導電膜とを備え、
一の前記パッドに導電接続している前記導電膜が、前記相手側基板における一の電気端子に導電接続されていることを特徴とする実装構造体。 - 請求項1ないし請求項7のいずれかに記載の電子部品が、電気光学パネルを構成する基板上および/または回路基板上に実装されてなることを特徴とする電気光学装置。
- 請求項9に記載の電気光学装置を備えたことを特徴とする電子機器。
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JP2004121645A JP3873986B2 (ja) | 2004-04-16 | 2004-04-16 | 電子部品、実装構造体、電気光学装置および電子機器 |
TW094111058A TWI263251B (en) | 2004-04-16 | 2005-04-07 | Electronic component, mounted structure, electro-optical device, and electronic device |
EP05252223A EP1587142A1 (en) | 2004-04-16 | 2005-04-08 | Electronic component, mounted structure, electro-optical device, and electronic device |
US11/103,412 US7166920B2 (en) | 2004-04-16 | 2005-04-11 | Electronic component, mounted structure, electro-optical device, and electronic device |
KR1020050030905A KR100699666B1 (ko) | 2004-04-16 | 2005-04-14 | 전자 부품, 실장 구조체, 전기 광학 장치 및 전자기기 |
CNA2005100646058A CN1683961A (zh) | 2004-04-16 | 2005-04-15 | 电子部件、安装结构体、电光装置和电子设备 |
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JP2004121645A Expired - Lifetime JP3873986B2 (ja) | 2004-04-16 | 2004-04-16 | 電子部品、実装構造体、電気光学装置および電子機器 |
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US (1) | US7166920B2 (ja) |
EP (1) | EP1587142A1 (ja) |
JP (1) | JP3873986B2 (ja) |
KR (1) | KR100699666B1 (ja) |
CN (1) | CN1683961A (ja) |
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-
2004
- 2004-04-16 JP JP2004121645A patent/JP3873986B2/ja not_active Expired - Lifetime
-
2005
- 2005-04-07 TW TW094111058A patent/TWI263251B/zh active
- 2005-04-08 EP EP05252223A patent/EP1587142A1/en not_active Withdrawn
- 2005-04-11 US US11/103,412 patent/US7166920B2/en active Active
- 2005-04-14 KR KR1020050030905A patent/KR100699666B1/ko active IP Right Grant
- 2005-04-15 CN CNA2005100646058A patent/CN1683961A/zh active Pending
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Also Published As
Publication number | Publication date |
---|---|
KR20060045689A (ko) | 2006-05-17 |
TW200535921A (en) | 2005-11-01 |
US20050230773A1 (en) | 2005-10-20 |
TWI263251B (en) | 2006-10-01 |
KR100699666B1 (ko) | 2007-03-23 |
CN1683961A (zh) | 2005-10-19 |
US7166920B2 (en) | 2007-01-23 |
JP3873986B2 (ja) | 2007-01-31 |
EP1587142A1 (en) | 2005-10-19 |
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