JP3530980B2 - 接着構造、液晶装置、及び電子機器 - Google Patents
接着構造、液晶装置、及び電子機器Info
- Publication number
- JP3530980B2 JP3530980B2 JP53749598A JP53749598A JP3530980B2 JP 3530980 B2 JP3530980 B2 JP 3530980B2 JP 53749598 A JP53749598 A JP 53749598A JP 53749598 A JP53749598 A JP 53749598A JP 3530980 B2 JP3530980 B2 JP 3530980B2
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- adhesive layer
- adhered
- electrode terminal
- layer
- 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
Links
- 230000001070 adhesive effect Effects 0.000 title claims description 160
- 239000000853 adhesive Substances 0.000 title claims description 144
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 43
- 239000012790 adhesive layer Substances 0.000 claims description 153
- 239000000758 substrate Substances 0.000 claims description 62
- 239000002245 particle Substances 0.000 claims description 50
- 239000010410 layer Substances 0.000 claims description 33
- 239000004065 semiconductor Substances 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 description 29
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- 239000007822 coupling agent Substances 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000004642 Polyimide Substances 0.000 description 4
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- 101100206179 Arabidopsis thaliana TCP13 gene Proteins 0.000 description 3
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- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- JQCVPZXMGXKNOD-UHFFFAOYSA-N 1,2-dibenzylbenzene Chemical compound C=1C=CC=C(CC=2C=CC=CC=2)C=1CC1=CC=CC=C1 JQCVPZXMGXKNOD-UHFFFAOYSA-N 0.000 description 1
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 description 1
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 101000666730 Homo sapiens T-complex protein 1 subunit alpha Proteins 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 102100038410 T-complex protein 1 subunit alpha Human genes 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 plating Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
- H01L24/29—Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
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- G—PHYSICS
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- 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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- 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
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L24/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
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- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L24/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/04—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
- H05K3/323—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives by applying an anisotropic conductive adhesive layer over an array of pads
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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
- H01L2224/161—Disposition
- H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
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- H01L2224/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
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- H01L2224/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
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- H01L2224/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
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Description
性接着剤を用いた接続構造、さらには、液晶パネルと外
部回路基板又は半導体素子との接続に異方導電性接着剤
を用いた液晶装置に関する。また、この液晶装置を表示
部として備えた電子機器に関する。
P(Tape Carrier Package)の端子(端子上にバンプ
が形成されている場合もある)との接続のように、ファ
インピッチの端子間の接続には異方導電性の接着剤が用
いられている。
化性あるいは熱可塑性の絶縁性接着材料と、この接着剤
内に配置された複数の導電粒子とで構成されていた。こ
こで、絶縁性接着材料は、被接着物、つまりガラス基板
とポリイミド製のTCPとに接着されるため、これらの材
質の異なる被接着物のいずれにも所定の接着力で接着で
きるように汎用性の高い接着剤を用いていた。
接着物に対しても一定レベルの接着力が得られるが、一
方の被接着物に対して一定レベル以上の接着力を求める
と、他方の被接着物との接着力が低下してしまい、全体
としては一定レベル以上の接着力が得られないという問
題があった。
板と外部回路基板である高分子基板とを接続する場合に
あっては、両者の接着特性が著しく異なることがある。
そのため、接着剥がれに起因する不良が、ガラス基板と
高分子基板のうちのどちらか一方のみにおいて起こりや
すい傾向にあった。
着される場合でも、各被接着物との接着力をそれぞれ向
上できる異方導電性接着剤を実現すること、及び、接続
不良が生じない液晶装置及びその製造方法を実現するこ
とにある。
が接着剤によって接着された接着構造において、前記第
1被接着物に形成された第1電極端子、及び前記第2被
接着物に形成された第2電極端子を有し、前記接着剤
は、第1接着層と第2接着層とが積層されてなり、前記
第1接着層は導電性粒子を含んでなり、前記第1接着層
は前記第1被接着物に対する接着力が前記第1電極端子
に対する接着力よりも高く、前記第2接着層は前記第2
被接着物に対する接着力が前記第2電極端子に対する接
着力よりも高く、前記第1接着層は、前記第1被接着物
と接着しており、前記第2接着層は、前記第2被接着物
と接着しており、さらに、前記接着剤のほかに、第3接
着層と第4接着層が別途に設けられ、前記第3接着層
は、前記第1電極端子と接着しており、前記第4接着層
は、前記第2電極端子と接着していること、を特徴とす
る。
接着物を接着する場合、接着剤が2層構造であるため、
第1の接着層と第1被接着物とが接し、第2の接着層と
第2の被接着物とが接することになる。そうすることに
より、各被接着物が各々に応じた接着特性の下で、他方
の被接着物と接着されるため、被接着物同士の接着が強
固なものになる。
数の導電粒子とを含有しており、前記第2の接着層は第
2の絶縁性接着材料を含有していることを特徴とする。
とる必要が有る場合にあっては、本発明のように第1の
接着層中に導電粒子を混入させれば良い。もちろん、第
2の接着層中にも導電粒子を混入してもかまわないが、
通常、第1の被接着物と第2の被接着物との間で電気的
接続をおこなう場合にあっては第1の被接着物と第2の
被接着物とを互いに押しつけるようにして接着する。そ
のため、第1の接着層中にのみ導電粒子を混入させれば
電気的接続はできる。
子の数や配置を管理しやすいので、容易に異方導電性の
接着剤を製造することができる。この場合において、第
2の接着層は第2の被接着物との接着のみに利用できれ
ばよいため、第1の接着層に比べて接着層の厚みを薄く
形成することができる。
に、絶縁性接着材料と複数の導電粒子を含有する導電層
を設けても第1の被接着物と第2の被接着物との間で電
気的接続をおこなうことができる。
接着物に直接接触しないため、被接着物に合わせて材質
を選定する必要がない。このため、接着剤がどのような
被接着物に接着される場合でも、それらの被接着物に応
じて第1および第2の接着層の接着特性のみを設定すれ
ばよく、導電層の絶縁性接着材料は共通して利用するこ
とができるので、様々な接着特性を有する異方導電性の
接着剤を製造するにあたって製造効率を向上できてコス
トも低減できる。
手段としては、 (1)第1の接着層中の絶縁性接着材料の主成分と第2
の接着層中の絶縁性接着材料の主成分を異なったものと
する (2)第1の接着層及び第2の接着層とに異なるカップ
リング剤を添加する (3)絶縁性接着材料の主成分並びに添加するカップリ
ング剤を第1の接着層と第2の接着層とで異なるものを
利用する 等が考えられるが、第1の接着層と第2の接着層とで同
一の絶縁性接着材料を用い、そして第1の接着層には第
1の被接着物に応じた第1のカップリング剤を添加し、
第2の接着層には第2の被接着物に応じた第2のカップ
リング剤を添加すれば、カップリング剤の種類を変える
だけで接着剤の特性を変化させることができるので、使
用する絶縁性接着材料の種類を少なくでき、製造効率を
向上できてコストも低減できる。
ており、少なくとも一方の前記基板には電極端子が形成
されている液晶パネルと、電極端子が形成されており、
前記一方の基板と接続された回路基板とを具備する液晶
装置であって、前記一方の基板と前記回路基板のいずれ
かの基板に応じた接着特性を有する第1の接着層と、他
方の基板に応じた接着特性を有する第2の接着層と、を
有する接着剤によって、前記一方の基板と前記回路基板
とが接続されていることを特徴とする。
ガラス基板)と、回路基板(主に高分子基板)との接続
に、それぞれの基板に応じた接着特性を有する複数の接
着層がある接着剤を用いる。その結果、双方の基板の接
着力が均一に強固なものとなり、液晶装置の接続信頼性
が向上する。
子の高さより低く形成され、第3接着層は第1電極端子
と接し、第4接着層は第2電極端子と接する構造となっ
ている。
圧着により行う。この圧着の際には、電極端子によって
接着剤が押し出され、そして流出する。当然のことなが
ら、電極端子の厚みが厚い電極端子によって押し出され
る接着剤の量の方が、厚みが薄い電極端子によって押し
出される接着剤の量より多い。液晶パネル基板と外部回
路基板との間で確実な電気的接続を行うためには、導電
粒子の流出をなくすことが好ましい。
と、電極端子厚みが薄い電極端子が形成された基板とを
接しさせるため、圧着の際の導電粒子の流出を防止する
ことができる。
透明導電膜(ITO)であり、回路基板に形成された電極
端子は金属膜である場合が多く、その場合においては、
第1の接着層は液晶パネル基板と接し、第2の接着層は
前記回路基板と接しさせるとよい。なぜならば、通常、
ITOは金属膜より薄く形成されるからである。
時計、ノートパソコンなどであり、液晶装置と外部回路
又は半導体素子との接着に本発明の電子部品の接着構造
を用いているので、液晶パネルと外部回路又は半導体素
子の接着力を向上でき、液晶装置や電子機器の不良品の
発生率を低減できて製造コストも低減することができ
る。
らさらに詳しく説明する。
ている。接着剤1は、複数の導電粒子3が配置された第
1の接着層4と、この第1の接着層4の上に積層された
第2の接着層5とを備えている。
の単独の金属粒子や、複数の金属の混合物、合金、メッ
キなどによる複合金属粒子でもよいし、プラスチック粒
子(ポリスチレン系、ポリカーボネート系、アクリル
系、ジベニルベンゼン系樹脂)にNi、Au、Cu、Fe等の単
独または複数のメッキをした粒子やカーボン粒子などで
もよい。
着層4,5が接着される被接着物との接着力が高い絶縁性
接着材料が主成分としてが用いられている。
のガラス基板11上に設けられた電極端子12と、TCP13の
電極端子14との間に配置される場合、第1の接着層4
は、ガラス基板11およびITO等からなる端子12との接着
力が高い絶縁性接着材料を主成分とし、第2の接着層5
は、ポリイミド製のTPC13および銅の表面に錫メッキを
施した電極端子14との接着力が高い絶縁性接着材料を主
成分として用いている。
子12に接着されるが、より接着面積が大きいのはガラス
基板11との接着であるから、ガラス基板11との接着力が
より大きくなるような絶縁性接着材料を主成分として用
いてもよい。
(ポリイミド製)との接着力がより大きくなるような絶
縁性接着材料を主成分として用いてもよい。
料は、具体的には、スチレンブタジエンスチレン(SB
S)系、エポキシ系、アクリル系、ポリエステル系、ウ
レタン系等の単独または複数の混合物もしくは化合物等
である。この際、各接着層4,5の主成分として、異なる
種類の絶縁性接着材料を用いてもよいが、本実施形態で
は同じ種類の絶縁性接着材料を用い、添加するカップリ
ング剤の種類を変えて接着特性を変えている。
ジメチルジメトキシシラン、γ−アミノプロピルトリエ
トキシシラン等が上げられるが、官能基としてメトキシ
基又はエトキシ基を多く含むカップリング剤であればガ
ラスとの接着強度を高めることができる。
ては、N−β(アミノエチル)γ−アミノプロピルトリ
メトキシシラン、γグリシドキプロピルトリメトキシシ
ラン等が上げられるが、官能基としてアミノ基、エポキ
シ基を多く含むカップリング剤であればポリイミドとの
接着強度を高めることができる。
合された第1の接着層4を、製造用ベース板やセパレー
タ上に積層し、その上に、第2の接着層5を積層するこ
となどで製造される。
に、液晶パネルのガラス基板11と、TCP13との間に配置
される。そして、各電極端子12,14を熱圧着などによっ
て接着剤1側に押し込み、各電極端子12,14間に導電粒
子3を介在させて導通するとともに、各接着層4,5でガ
ラス基板11およびTCP13とを接着する。
ル10と、液晶ドライバIC15が搭載されたTCP13とが接着
剤1で接着された液晶装置100が構成される。
まれて利用される。例えば、図4に示す携帯電話200の
筐体201内に組み込まれたり、図5に示すノートパソコ
ン300の筐体301内に組み込まれて利用される。
がある。 (1)第1および第2の2種類の接着層4,5を積層して
接着剤1を構成したので、ガラス基板11や電極端子12に
接着される第1の接着層4をこれらのガラス基板11など
との接着力が高い種類の接着層とし、TCP13や端子14に
接着される第2の接着層5をこれらのTCP13などとの接
着力が高い種類の接着層で構成することができる。この
ため、従来のように、1種類の接着層でガラス基板11、
TCP13を接着させる場合に比べて、各被接着物11,13との
接着力を向上でき、接着特性に優れた接着剤1とするこ
とができる。 (2)導電粒子3は、第1の接着層4のみに含まれてい
るので、各接着層4,5の両方に導電粒子3を配置する場
合に比べて、導電粒子3の数や配置を管理しやすく、容
易に製造することができる。 (3)第2の接着層5は、導電粒子3が配置されないた
め、第1の接着剤4に比べて膜厚を薄く形成でき、その
分、接着層5の使用量が少なくなってコストも低減する
ことができる。 (4)各接着層4,5の接着特性を変えるにあたって、絶
縁性接着材料の種類を変えずに添加するカップリング剤
の種類を変えるので、各接着層4,5の接着特性を低コス
トでかつ容易に設定することができる。
して説明する。なお、本実施形態において、前記第1実
施形態と同一または同様の構成部分には同一符号を付
し、説明を省略あるいは簡略する。
数の導電粒子3が配置された導電層4と、この導電層4
の下に積層された第1の接着層6と、導電層4の上に積
層された第2の接着層5とを備えている。
剤で構成され、また、導電粒子3が膜厚方向には一列
(一層)となるように比較的薄く形成されている。導電
粒子が一層であれば、接着時に端子間に移動する導電粒
子の量も少なくなり、端子間がショートする可能性も更
に低下する。
形態における接着層4,5と同様に、各接着層6,5が接着さ
れる被接着物との接着力が高い接着層で構成されてい
る。
のガラス基板11上に設けられた電極端子12と、IC21の端
子(バンプ)22との間に配置される場合、第1の接着層
6は、ガラス基板11およびITO等からなる電極端子12と
の接着力が高い接着層が用いられ、第2の接着層5は、
セラミックなどからなるIC21のパッケージおよび金メッ
キを施した端子22との接着力が高い接着層が用いられ
る。
ラス基板11との接着面積が大きいから、ガラス基板11と
の接着力がより大きくなるような接着層を用いてもよい
し、第2の接着層5も、接着面積が大きなIC21との接着
力がより大きくなるような接着層を用いてもよい。な
お、各接着層6、5および導電層4に主成分として用い
る絶縁性接着材料は、前記第1実施形態と同様であり、
添加するカップリング剤の種類を変えて接着特性を変化
させている。
6を、製造用ベース板やセパレータ上に積層し、その上
に、導電粒子3が配合された導電層4および第2の接着
層5を順次積層することなどで製造される。
液晶パネルのガラス基板11と、IC21との間に配置され
る。そして、各電極端子12,22を熱圧着などによって接
着剤1側に押し込み、各端子12,22間に導電粒子3を介
在させて導通するとともに、各接着層6,5でガラス基板1
1およびIC21を接着する。また、IC21に信号を入力する
ために、IC21の入力端子に接続されている電極端子12に
フレキシブル基板を接続するが、そのフレキシブル基板
とガラス基板上の電極端子12との接続には、第1の実施
形態で示した接着剤を用いるのが好ましい。
(4)と同様の効果がある。
び導電層4の3つの層を積層して接着剤1を構成したの
で、ガラス基板11や電極端子12に接着される第1の接着
層6をこれらのガラス基板11などとの接着力が高い種類
の接着層とし、IC21や電極端子22に接着される第2の接
着層5をこれらのIC21などとの接着力が高い種類の接着
層で構成することができる。このため、従来のように、
1種類の接着層でガラス基板11,IC21と接着させる場合
に比べて、各被接着物との接着力を向上でき、接着特性
に優れた接着剤1とすることができる。 (2)導電粒子3は、導電層4のみに含まれているの
で、接着層6、5及び導電層4に導電粒子3を配置する
場合に比べて、導電粒子3の数や配置を管理しやすく、
容易に製造することができる。 (3)第1、第2の接着層6,5は、導電粒子3が配置さ
れないため、導電層4に比べて膜厚を薄く形成でき、そ
の分、絶縁性接着材料の使用量が少なくなってコストも
低減することができる。 (4)各接着層6,5の接着特性は、添加するカップリン
グ剤の種類で変化させているので、各接着層6,5の接着
特性を低コストでかつ容易に設定することができる。 (5)さらに、第2実施形態によれば、導電粒子3が含
まれる導電層4は、接着剤1の中間に配置されて被接着
物に直接接触しないため、被接着物11,21に合わせて材
質を選定する必要がない。このため、接着剤1がどのよ
うな被接着物に接着される場合でも、それらの被接着物
に応じて第1の接着層6及び第2の接着層5を設定すれ
ばよく、導電層4は共通して利用することができるの
で、様々な接着特性を有する接着剤1を製造するにあた
って、製造効率を向上できてコストも低減できる。 (6)導電粒子3は、接着剤1の膜厚方向には1列(一
層)となるように配置されているため、各電極端子12,2
2間に介在される導電粒子3は、各電極端子12,22の接続
面の面積と、導電粒子3の単位面積当たりの散布数とで
容易に管理でき、各電極端子12,22間に介在される導電
粒子3の数、つまり導通性能を高精度に調整、設定する
ことができる。
はなく、本発明の目的を達成できる範囲での変形、改良
等は本発明に含まれるものである。
施形態における第1の接着層又は第2実施形態における
導電層4のみに含まれていたが、他の層、例えば第1の
実施形態における第2の接着層5や第2の実施形態にお
ける第2の接着層5にも含ませる、又は、第1の実施形
態における第1の接着層4又は第2の実施形態における
導電層4には導電粒子を含ませず、他の層、例えば第1
の実施形態における第2の接着層5や第2の実施形態に
おける第2の接着層5のみに導電粒子を含ませる、とい
った構成を採用しても、接着強度という点においては第
1又は第2に実施形態と同様の効果を得ることができ
る。
的厚い接着剤層に均一に配置してもよいし、図6に示す
ように、膜厚が比較的薄い接着剤層に膜厚方向には1〜
2列程度となるように配置してもよい。
するものでもよい。この場合には、ガラス基板11やTCP1
3、IC21に接着される接着剤のほかに、各電極端子12,1
4,22に接着される接着層を別途設けて、各々の接着層を
被接着物12,14,22に適したものを利用することができ、
接着剤と被接着物との接着力をより一層向上することが
できる。
施形態の液晶パネル用ガラス基板11の電極端子12と、TC
P13の電極端子14との導通接続に用いてもよいし、逆
に、第1実施形態の2層構造の接着剤1を、第2実施形
態のガラス基板11およびIC21の接着に用いてもよい。
着に限らず、各種電気部品同士の導通に広く利用するこ
とができる。また、各接着層6、5及び導電層4の接着
特性を設定するには、カップリング剤を添加する場合に
限らず、絶縁性接着材料の主成分の種類自体を変えて設
定してもよいし、他の添加物等を適宜加えて設定しても
よい。
電粒子3の材質(絶縁性接着材料の主成分の種類や添加
するカップリング剤の種類)、大きさ(膜厚や粒子径)
等は、適用する被接着物の種類に応じて適宜設定すれば
よい。従って、本発明の接着剤1を用いた電子機器とし
ても、携帯電話200やノートパソコン300のように液晶装
置100を表示部として備えるものに限らず、液晶装置を
備えない各種電子機器にも適用できる。 [図面の簡単な説明]
を示す図である。
基板との接続部分の断面を示す図である。
る。
を示す図である。
板と半導体素子との接続部分の断面を示す図である。
Claims (6)
- 【請求項1】第1被接着物と第2被接着物とが接着剤に
よって接着された接着構造において、 前記第1被接着物に形成された第1電極端子、及び前記
第2被接着物に形成された第2電極端子を有し、 前記接着剤は、第1接着層と第2接着層とが積層されて
なり、 前記第1接着層は導電性粒子を含んでなり、 前記第1接着層は前記第1被接着物に対する接着力が前
記第1電極端子に対する接着力よりも高く、 前記第2接着層は前記第2被接着物に対する接着力が前
記第2電極端子に対する接着力よりも高く、 前記第1接着層は、前記第1被接着物と接着しており、 前記第2接着層は、前記第2被接着物と接着しており、 さらに、前記接着剤のほかに、第3接着層と第4接着層
が別途に設けられ、 前記第3接着層は、前記第1電極端子と接着しており、 前記第4接着層は、前記第2電極端子と接着しているこ
と、 を特徴とする接着構造。 - 【請求項2】前記第1接着層は、前記第1被接着物に対
する接着力が前記第2接着層よりも高く、前記第2接着
層は、前記第2被接着物に対する接着力が前記第1接着
層よりも高いことを特徴とする請求項1に記載の接着構
造。 - 【請求項3】液晶を挟持する一対の基板と、前記一対の
基板のうち一方の基板に接着剤によって接着される回路
基板とを有する液晶装置において、 前記一方の基板に形成された第1電極端子、及び前記回
路基板に形成された第2電極端子を有し、 前記接着剤は、第1接着層と第2接着層とが積層されて
なり、 前記第1接着層は導電性粒子を含んでなり、 前記第1接着層は前記一方の基板に対する接着力が前記
第1電極端子に対する接着力よりも高く、 前記第2接着層は前記回路基板との接着力が前記第2電
極端子に対する接着力よりも高く、 前記第1接着層は、前記一方の基板と接着しており、 前記第2接着層は、前記回路基板と接着しており、 さらに、前記接着剤のほかに、第3接着層と第4接着層
が別途に設けられ、 前記第3接着層は、前記第1電極端子と接着しており、 前記第4接着層は、前記第2電極端子と接着しているこ
と、 を特徴とする液晶装置。 - 【請求項4】液晶を挟持する一対の基板と、前記一対の
基板のうち一方の基板に接着剤によって接着される半導
体素子とを有する液晶装置において、 前記一方の基板に形成された第1電極端子、及び前記半
導体素子に形成された第2電極端子を有し、 前記接着剤は、第1接着層と第2接着層とが積層されて
なり、 前記第1接着層は導電性粒子を含んでなり、 前記第1接着層は前記一方の基板に対する接着力が前記
第1電極端子に対する接着力よりも高く、 前記第2接着層は前記半導体素子に対する接着力が前記
第2電極端子に対する接着力よりも高く、 前記第1接着層は、前記一方の基板と接着しており、 前記第2接着層は、前記半導体素子と接着しており、 さらに、前記接着剤のほかに、第3接着層と第4接着層
が別途に設けられ、 前記第3接着層は、前記第1電極端子と接着しており、 前記第4接着層は、前記第2電極端子と接着しているこ
と、 を特徴とする液晶装置。 - 【請求項5】請求項1または2に記載の接着構造を用い
たことを特徴とする電子機器。 - 【請求項6】請求項3または4に記載の液晶装置を用い
たことを特徴とする電子機器。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9-44386 | 1997-02-27 | ||
JP4438697 | 1997-02-27 | ||
PCT/JP1998/000647 WO1998038261A1 (en) | 1997-02-27 | 1998-02-16 | Adhesive, liquid crystal device, method of manufacturing liquid crystal device, and electronic apparatus |
Related Child Applications (1)
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JP2003337421A Division JP3876993B2 (ja) | 1997-02-27 | 2003-09-29 | 接着構造、液晶装置、及び電子機器 |
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JP53749598A Expired - Fee Related JP3530980B2 (ja) | 1997-02-27 | 1998-02-16 | 接着構造、液晶装置、及び電子機器 |
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US (1) | US6583834B1 (ja) |
JP (1) | JP3530980B2 (ja) |
KR (1) | KR100558639B1 (ja) |
CN (1) | CN1103803C (ja) |
TW (2) | TW560535U (ja) |
WO (1) | WO1998038261A1 (ja) |
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JPH11195860A (ja) * | 1997-12-27 | 1999-07-21 | Canon Inc | 接着部材、該接着部材を備えたマルチチップモジュール、及び該接着部材による接着方法 |
KR100402154B1 (ko) * | 1999-04-01 | 2003-10-17 | 미쯔이카가쿠 가부시기가이샤 | 이방 도전성 페이스트 |
US6864932B2 (en) * | 2001-04-16 | 2005-03-08 | Nitto Denko Corporation | Optical member and liquid-crystal display device |
KR100398314B1 (ko) * | 2001-07-19 | 2003-09-19 | 한국과학기술원 | 고접착력 3층 구조 aca 필름 |
JP3687610B2 (ja) * | 2002-01-18 | 2005-08-24 | セイコーエプソン株式会社 | 半導体装置、回路基板及び電子機器 |
DE10297818T5 (de) * | 2002-11-29 | 2006-03-16 | Infineon Technologies Ag | Anbringen von Flipchips an Substraten |
JP5196703B2 (ja) * | 2004-01-15 | 2013-05-15 | デクセリアルズ株式会社 | 接着フィルム |
DE102005028906A1 (de) * | 2005-06-22 | 2006-12-28 | Giesecke & Devrient Gmbh | Vorrichtung für die Prüfung von Banknoten |
KR101100569B1 (ko) * | 2006-11-10 | 2011-12-29 | 히다치 가세고교 가부시끼가이샤 | 접착 필름, 및 회로 부재의 접속 구조 및 접속 방법 |
JP5311772B2 (ja) * | 2007-06-27 | 2013-10-09 | デクセリアルズ株式会社 | 接着フィルム |
KR100889002B1 (ko) * | 2007-12-27 | 2009-03-19 | 엘지전자 주식회사 | 연성 필름 |
JP5397378B2 (ja) * | 2008-08-27 | 2014-01-22 | 日立化成株式会社 | 感光性接着剤組成物、フィルム状感光性接着剤、接着剤パターン、接着剤付き半導体ウェハ、半導体装置、及び電子部品 |
JP2010007076A (ja) * | 2009-08-07 | 2010-01-14 | Hitachi Chem Co Ltd | 異方導電性接着フィルム |
KR101142530B1 (ko) * | 2009-08-14 | 2012-05-07 | 도레이첨단소재 주식회사 | 이방성 도전 필름의 제조방법 |
EP2519088A1 (en) * | 2009-12-24 | 2012-10-31 | Sumitomo Bakelite Co., Ltd. | Conductive connection material, electronic component producing method, and electronic member and electronic component with conductive connection material |
KR101351617B1 (ko) * | 2010-12-23 | 2014-01-15 | 제일모직주식회사 | 이방 도전성 필름 |
JP5912741B2 (ja) | 2012-03-27 | 2016-04-27 | 日東電工株式会社 | 接合シート、電子部品およびその製造方法 |
JP2013216785A (ja) * | 2012-04-09 | 2013-10-24 | Sumitomo Electric Ind Ltd | 光学部品実装構造、波長選択デバイス、及び光学部品実装構造の製造方法 |
JP6133069B2 (ja) * | 2013-01-30 | 2017-05-24 | デクセリアルズ株式会社 | 加熱硬化型接着フィルム |
JP6358535B2 (ja) * | 2013-04-26 | 2018-07-18 | パナソニックIpマネジメント株式会社 | 配線板間接続構造、および配線板間接続方法 |
KR102069288B1 (ko) * | 2013-08-28 | 2020-01-23 | 삼성디스플레이 주식회사 | 액정 배향제 및 액정 표시 장치 |
KR101628440B1 (ko) | 2013-10-31 | 2016-06-08 | 제일모직주식회사 | 이방성 도전 필름 및 이를 이용한 반도체 장치 |
JP2015135878A (ja) * | 2014-01-16 | 2015-07-27 | デクセリアルズ株式会社 | 接続体、接続体の製造方法、接続方法、異方性導電接着剤 |
KR20160046977A (ko) * | 2014-10-20 | 2016-05-02 | 삼성디스플레이 주식회사 | 이방성 도전입자 |
CN106318244A (zh) * | 2015-07-02 | 2017-01-11 | 玮锋科技股份有限公司 | 核层技术异方性导电胶膜 |
US11557489B2 (en) * | 2018-08-27 | 2023-01-17 | Intel Corporation | Cavity structures in integrated circuit package supports |
CN113410203A (zh) * | 2020-03-17 | 2021-09-17 | 群创光电股份有限公司 | 电子装置 |
CN113451491B (zh) * | 2020-09-29 | 2022-04-29 | 重庆康佳光电技术研究院有限公司 | 显示面板及其制作方法 |
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JPH0462714A (ja) * | 1990-06-29 | 1992-02-27 | Three Bond Co Ltd | 異方導電性接着剤 |
JPH04366630A (ja) * | 1991-06-13 | 1992-12-18 | Sharp Corp | 異方性導電接着テープ |
JPH05273532A (ja) | 1992-01-31 | 1993-10-22 | Canon Inc | 液晶素子 |
JPH0625627A (ja) * | 1992-03-30 | 1994-02-01 | Aica Kogyo Co Ltd | 水分散型接着剤組成物 |
JPH0625621A (ja) * | 1992-07-09 | 1994-02-01 | Murata Mfg Co Ltd | 接着シート及びそれを用いて製造した電子部品 |
JP3364695B2 (ja) * | 1993-12-28 | 2003-01-08 | ソニーケミカル株式会社 | 回路接続部の再生方法 |
TW277152B (ja) * | 1994-05-10 | 1996-06-01 | Hitachi Chemical Co Ltd | |
JPH08188760A (ja) * | 1995-01-10 | 1996-07-23 | Sony Chem Corp | 異方性導電接着剤及びそれを用いた異方性導電接着剤シート |
JP3656768B2 (ja) | 1995-02-07 | 2005-06-08 | 日立化成工業株式会社 | 接続部材および該接続部材を用いた電極の接続構造並びに接続方法 |
JP3801666B2 (ja) | 1995-05-22 | 2006-07-26 | 日立化成工業株式会社 | 電極の接続方法およびこれに用いる接続部材 |
JPH09161543A (ja) | 1995-12-13 | 1997-06-20 | Toshiba Chem Corp | 異方性導電膜及びその使用方法 |
-
1998
- 1998-02-16 KR KR1019980708616A patent/KR100558639B1/ko not_active IP Right Cessation
- 1998-02-16 JP JP53749598A patent/JP3530980B2/ja not_active Expired - Fee Related
- 1998-02-16 US US09/171,926 patent/US6583834B1/en not_active Expired - Lifetime
- 1998-02-16 TW TW091208581U patent/TW560535U/zh not_active IP Right Cessation
- 1998-02-16 WO PCT/JP1998/000647 patent/WO1998038261A1/ja not_active Application Discontinuation
- 1998-02-16 TW TW090125814A patent/TW581800B/zh active
- 1998-02-16 CN CN98800198A patent/CN1103803C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
TW560535U (en) | 2003-11-01 |
CN1217737A (zh) | 1999-05-26 |
WO1998038261A1 (en) | 1998-09-03 |
KR100558639B1 (ko) | 2006-06-28 |
KR20000065057A (ko) | 2000-11-06 |
CN1103803C (zh) | 2003-03-26 |
US6583834B1 (en) | 2003-06-24 |
TW581800B (en) | 2004-04-01 |
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