JP5588950B2 - 耐熱性粘着テープ - Google Patents
耐熱性粘着テープ Download PDFInfo
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- JP5588950B2 JP5588950B2 JP2011228010A JP2011228010A JP5588950B2 JP 5588950 B2 JP5588950 B2 JP 5588950B2 JP 2011228010 A JP2011228010 A JP 2011228010A JP 2011228010 A JP2011228010 A JP 2011228010A JP 5588950 B2 JP5588950 B2 JP 5588950B2
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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
- H01L24/93—Batch processes
- H01L24/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L24/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—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
- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
- H01L2224/321—Disposition
- H01L2224/32151—Disposition the layer 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
- H01L2224/32221—Disposition the layer 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
- H01L2224/32245—Disposition the layer 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 metallic
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- H01L2224/01—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
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/45001—Core members of the connector
- H01L2224/45099—Material
- H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/45144—Gold (Au) as principal constituent
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- H01L2224/01—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
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H01L2224/01—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
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—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
- H01L2224/48221—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
- H01L2224/48245—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 metallic
- H01L2224/48247—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 metallic connecting the wire to a bond pad of the item
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
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- H01L2224/91—Methods for connecting semiconductor or solid state bodies including different methods provided for in two or more of groups H01L2224/80 - H01L2224/90
- H01L2224/92—Specific sequence of method steps
- H01L2224/922—Connecting different surfaces of the semiconductor or solid-state body with connectors of different types
- H01L2224/9222—Sequential connecting processes
- H01L2224/92242—Sequential connecting processes the first connecting process involving a layer connector
- H01L2224/92247—Sequential connecting processes the first connecting process involving a layer connector the second connecting process involving a wire connector
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- H01L2224/93—Batch processes
- H01L2224/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L2224/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
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- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Adhesive Tapes (AREA)
Description
前記粘着剤層は、紫外線硬化性化合物を含む紫外線硬化型粘着剤により構成され、
前記粘着剤層に紫外線を照射し、更に200℃で1時間加熱した後にJIS Z0237に準拠して測定した前記粘着剤層の粘着力が1N/19mm幅以下である。
即ち、本発明によれば、封止樹脂による半導体チップの封止前に、リードフレームに貼着している耐熱性粘着テープの粘着剤層に予め放射線を照射することにより、該粘着剤層の粘着力を低下させておくので、耐熱性粘着テープにより封止工程での樹脂漏れを好適に防止すると共に、該耐熱性粘着テープの剥離の際には、モールドした封止樹脂の剥がれや破損、糊残りを防止することができる。即ち、本発明の耐熱性粘着テープによれば、歩留まりを向上させて半導体装置を製造することができる。
ブチル(メタ)アクリレートモノマー100重量部に対して、構成モノマーとしての(メタ)アクリル酸モノマーを5重量部配合してアクリル系共重合体を得た。このアクリル系共重合体100重量部に対して、エポキシ系架橋剤(三菱ガス化学製:Tebad‐C)を0.5重量部添加したアクリル系粘着剤に、紫外線硬化性化合物50重量部と、紫外線硬化開始剤3重量部とを添加して、粘着剤組成物を調製した。
リードフレームの材質をNi/Pd PPFに変更したこと以外は、実施例1と同様して行った。その結果、封止樹脂の樹脂漏れも無く、またモールド終了時に耐熱性粘着テープを剥離する際にも、該耐熱性粘着テープを容易に剥離することができた。更に、完成したパッケージに対しても、封止樹脂に糊付着による著しい汚染等が認められず、良好なパッケージを得ることができた。
前記耐熱性粘着テープを貼着しないでリードフレーム単体に半導体チップをボンディングし、その後、実施例1と同様にして樹脂封止を行った。その結果、樹脂漏れが発生した。
粘着剤層に紫外線硬化性化合物を添加しなかったこと以外は、実施例1で使用したのと同じ組成のアクリル系粘着剤を用いて、本比較例に係る耐熱性粘着テープを作成した。この耐熱性粘着テープをステンレス板に貼り合わせた状態で、200℃にて1時間加熱し、その後の粘着力をJIS Z0237に準拠して測定した。その結果、粘着力は2.5N/19mm幅であった。
11 パッケージパターン領域
11a 開口
11b 端子部
11c ダイパッド
11d ダイバー
12 インジェクション時間
13 ガイドピン用孔
15 半導体チップ
15a 電極パッド
16 ボンディングワイヤー
17 封止樹脂
18 金型
18a 上金型
18b 下金型
19 導電性ペースト
20 耐熱性粘着テープ
Claims (7)
- 基材層と、該基材層上に設けられた粘着剤層を備える耐熱性粘着テープであって、
前記粘着剤層は、紫外線硬化性化合物を含む紫外線硬化型粘着剤により構成され、
前記粘着剤層に紫外線を照射し、更に200℃で1時間加熱した後にJIS Z0237に準拠して測定した前記粘着剤層の粘着力が1N/19mm幅以下であるシール用耐熱性粘着テープ。 - 前記粘着剤層を200℃で1時間加熱した後にJIS Z0237に準拠して測定した前記粘着剤層の粘着力が5N/19mm幅以下である請求項1に記載のシール用耐熱性粘着テープ。
- 前記基材層の線熱膨張係数が1.0×10−5〜3.0×10−5/Kである請求項1又は2に記載のシール用耐熱性粘着テープ。
- 前記紫外線硬化性化合物の配合量は、前記紫外線硬化型粘着剤を構成する粘着剤100重量部に対し5〜500重量部である請求項1〜3のいずれか1項に記載のシール用耐熱性粘着テープ。
- 前記粘着剤がアクリル系ポリマーを含むアクリル系粘着剤である請求項4に記載のシール用耐熱性粘着テープ。
- 前記粘着剤が架橋剤をさらに含む請求項5に記載のシール用耐熱性粘着テープ。
- 前記架橋剤の含有量は、前記アクリル系ポリマー100重量部に対し0.1〜15重量部である請求項6に記載のシール用耐熱性粘着テープ。
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