JP3967293B2 - Semiconductor device - Google Patents

Semiconductor device Download PDF

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Publication number
JP3967293B2
JP3967293B2 JP2003175951A JP2003175951A JP3967293B2 JP 3967293 B2 JP3967293 B2 JP 3967293B2 JP 2003175951 A JP2003175951 A JP 2003175951A JP 2003175951 A JP2003175951 A JP 2003175951A JP 3967293 B2 JP3967293 B2 JP 3967293B2
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Japan
Prior art keywords
insulating film
outer peripheral
bonding pad
peripheral edge
semiconductor device
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JP2003175951A
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JP2005012042A (en
Inventor
友範 金井
清治 岸本
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Hitachi Maxell Energy Ltd
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Hitachi Maxell Energy Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means 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
    • H01L2224/10Bump connectors; Manufacturing methods related thereto
    • H01L2224/11Manufacturing methods

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  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、主面上に再配線が施されたCSP(Chip Size Package)タイプの半導体装置に係り、特に、主面の半導体素子領域を保護する第1絶縁膜と再配線を保護する第2絶縁膜の構成に関する。
【0002】
【従来の技術】
近年、電気機器の小型軽量化、高速化及び高機能化の要求に対処するため、電気機器に実装する半導体装置に対しても小型軽量化、高集積化及び実装の容易化の要求が益々高まっている。
【0003】
従来より、これらの各要求に対応可能な半導体装置として、図6乃至図8に示すように、主面1に形成された半導体素子領域2と、当該半導体素子領域2の外周部に沿って配列された第1ボンディングパッド(アルミパッド)3と、半導体素子領域2を保護するために第1ボンディングパッド3の形成部を除く主面1上に形成されたパッシベーション膜4と、当該パッシベーション膜4上に形成された第1絶縁膜5と、当該第1絶縁膜5上に施され一端が第1ボンディングパッド3に接続された再配線6と、当該再配線6を保護するために第1絶縁膜5上に形成された第2絶縁膜7と、再配線6の他端に形成された第2ボンディングパッド8上に設定されたバンプ電極9とを備えたCSPと呼ばれる半導体装置が提案されている(例えば、特許文献1〜4参照。)。
【0004】
このCSPタイプの半導体装置は、バンプ電極9を主面1の全面に配置することができるので、半導体素子領域2の外周部に配列された第1ボンディングパッド3上に直接バンプ電極9を形成する場合に比べて各バンプ電極9間の距離を大きくすることができ、半導体装置の多端子化ひいては高機能化と電気機器に対する実装の容易化とを図ることができる。また、半導体素子を樹脂封止しないので、半導体装置の小型軽量化を図ることができる。
【0005】
【特許文献1】
特開平4−19855号公報
【0006】
【特許文献2】
特開平6−237653号公報
【0007】
【特許文献3】
米国特許第5679977号明細書
【0008】
【特許文献4】
米国特許第5801441号明細書
【0009】
【発明が解決しようとする課題】
前記CSPタイプの半導体装置は、通常のウエハプロセスで主面1に半導体素子領域2と第1ボンディングパッド3とパッシベーション膜4とが形成されたウエハを作製した後、当該ウエハに対して第1絶縁膜5の形成と、再配線6の形成と、第2絶縁膜7の形成と、第2ボンディングパッド8へのバンプ電極9の設定とを行ってCSP用の完成ウエハを得、当該完成ウエハをスクライブすることにより作製される。
【0010】
然るに、従来のこの種の半導体装置は、図6乃至図8に示すように、第2絶縁膜7が第1絶縁膜5を完全に覆う構成になっており、第1絶縁膜5の全周において第1絶縁膜5の外周縁よりも第2絶縁膜7の外周縁の方が主面1の外周方向に張り出しているため、第2絶縁膜7の外周縁を基準としてスクライブエリアを設定せざるを得ず、ウエハ上における各半導体素子領域2の設定間隔が広くなって1枚のウエハから切り出せる半導体装置の増加ひいては半導体素子の製造コストの低減を図ることが難しいという問題がある。図8の例では、第1絶縁膜5の精度及び第2絶縁膜7の精度をそれぞれ±5μmと見込んでスクライブエリアが設定されており、この場合には第1ボンディングパッド3の開口端からスクライブエリア端までの距離が20μmになる。
【0011】
なお、第1絶縁膜5の外周縁の精度及び第2絶縁膜7の外周縁の精度を高精度化すれば、ウエハ上における各半導体素子領域2の設定間隔を詰めることができ、1枚のウエハから切り出せる半導体装置の数を増加できるが、第1絶縁膜5及び第2絶縁膜7の形成が困難になってウエハの製造効率が低下したり、スクライブ時に不良品が発生しやすくなって良品の歩留まりが低下するので、実際上半導体素子の製造コストを低減することは困難である。
【0012】
本発明は、かかる従来技術の不備を解消するためになされたものであり、その目的は、1枚のウエハからより多数の半導体装置をより高い歩留まりで切り出すことができて安価な半導体装置を提供することにある。
【0013】
【課題を解決するための手段】
本発明は、前記の課題を解決するため、主面に形成された半導体素子領域と、当該半導体素子領域の外周部に配列された第1ボンディングパッドと、前記第1ボンディングパッドの一部及び前記主面の最外周部を除く前記主面上に形成された第1絶縁膜と、当該第1絶縁膜上に形成され、一端が前記第1ボンディングパッドに接続された再配線と、当該再配線の他端に形成され、前記第1絶縁膜上に配置された第2ボンディングパッドと、当該第2ボンディングパッドの一部及び前記主面の最外周部を除く前記第1絶縁膜上に形成された第2絶縁膜と、前記第2ボンディングパッドに形成されたバンプ電極とを有する半導体装置において、少なくとも前記主面の四隅部を除き、前記第2絶縁膜の外周縁を前記第1絶縁膜の外周縁と合致させるか、前記第2絶縁膜の外周縁を前記第1絶縁膜の外周縁よりも内側に配置するという構成にした。
【0014】
このように、第2絶縁膜の外周縁を第1絶縁膜の外周縁と合致させるか、第2絶縁膜の外周縁を第1絶縁膜の外周縁よりも内側に配置すると、第1絶縁膜の外周縁を基準としてスクライブエリアを設定することができるので、第2絶縁膜にて第1絶縁膜を完全に覆い、第2絶縁膜の外周縁を基準としてスクライブエリアを設定する場合に比べて第1ボンディングパッドの開口端からスクライブエリア端までの距離を詰めることができ、1枚のウエハから切り出せる半導体装置の増加を図ることができる。一方、第1ボンディングパッドの開口端からスクライブエリア端までの距離を一定とした場合には、スクライブエリアのマージンを拡大することができてスクライブ時における不良品の発生率を抑制できると共に、第1絶縁膜5及び第2絶縁膜7の形成時のマージンを拡大することができてこれら各絶縁膜5,7の形成を容易なものにすることができる。よって、これらのことから半導体素子の製造コストの低減を図ることができる。
【0015】
【発明の実施の形態】
以下、本発明に係る半導体装置の第1例を図1及び図2に基づいて説明する。図1は第1実施形態例に係る半導体装置のバンプ電極を省略した平面図、図2は図1のA−A断面図である。
【0016】
本例の半導体装置は、基本的構成については図6乃至図8に示した従来の半導体装置と同じであり、図1及び図2に示すように、主面1に形成された半導体素子領域2と、当該半導体素子領域2の外周部に沿って配列された第1ボンディングパッド3と、半導体素子領域2を保護するために第1ボンディングパッド3の形成部を除く主面1上に形成されたパッシベーション膜4と、当該パッシベーション膜4上に形成された第1絶縁膜5と、当該第1絶縁膜5上に形成され一端が第1ボンディングパッド3に接続された再配線6と、当該再配線6を保護するために第1絶縁膜5上に形成された第2絶縁膜7と、再配線6の他端に形成された第2ボンディングパッド8上に設定されたバンプ電極9とから構成されている。
【0017】
半導体素子領域2、第1ボンディングパッド3及びパッシベーション膜4の形成は通常のウエハプロセスで行われ、再配線6、第2絶縁膜7及びバンプ電極9の形成は、ウエハプロセス終了後の再配線工程において行われる。
【0018】
第1絶縁膜5は、感光性ポリイミド樹脂などの感光性樹脂材料をもって構成され、図1及び図2に示すように、第1ボンディングパッド3の一部(中央部)及び主面1の最外周部を除く主面1上に形成される。この第1絶縁膜5は、再配線6の形成時における第1ボンディングパッド3の損傷を防止するため、第1ボンディングパッド3の開口端を覆うように形成される。この第1絶縁膜5の形成は、半導体装置のもとになるウエハの主面上に感光性樹脂材料よりなる樹脂層を均一な厚さに塗布した後、当該樹脂層を第1絶縁膜5の形状に露光して露光部を硬化し、次いで、未露光部を現像処理により除去することによって行う。
【0019】
第2ボンディングパッド8を含む再配線6は、銅めっきによって形成され、図1に示すように、第1絶縁膜5に配列される。この第2ボンディングパッド8を含む再配線6も、フォトリソグラフィ法によって形成される。即ち、第1絶縁膜5上にクロム又は銅などを一様にスパッタリングしてシード層を形成し、次いで当該シード層上にフォトレジスト層を均一な厚さに塗布し、フォトレジスト層を第2ボンディングパッド8を含む再配線6の形状に露光する。次いで、未露光部を現像処理によって除去し、露光部に対応するシード層を化学エッチングによって除去する。次いで、残存したフォトレジスト層をアッシングにて除去し、露光部に対応するシード層を露出させる。最後に、露出されたシード層に銅めっきを施して第2ボンディングパッド8を含む再配線6とする。
【0020】
第2絶縁膜7は、感光性ポリイミド樹脂などの感光性樹脂材料をもって構成され、図1及び図2に示すように、第2ボンディングパッド8の一部(中央部)及び主面1の最外周部を除く第1絶縁膜5上に形成される。この第2絶縁膜7の外周縁は、前記第1絶縁膜5の外周縁よりも内側に配置する。この第2絶縁膜7も、前記第1絶縁膜5と同様の方法で形成される。
【0021】
バンプ電極9は、鉛フリーはんだや共晶はんだなどからなるはんだボールをもって形成されており、第2ボンディングパッド8上に設置される。
【0022】
本例の半導体装置は、第2絶縁膜7の外周縁を第1絶縁膜5の外周縁よりも内側に配置したので、第1絶縁膜5の外周縁を基準としてスクライブエリアを設定することができ、第2絶縁膜7にて第1絶縁膜5を完全に覆い、第2絶縁膜7の外周縁を基準としてスクライブエリアを設定する場合に比べて第1ボンディングパッド3の開口端からスクライブエリア端までの距離を詰めることができることから、1枚のウエハから切り出せる半導体装置の数を増加することができる。即ち、図2に示すように、第1絶縁膜5の外周縁の形成精度を従来例に係る半導体装置と同様に±5μmとした場合には、第1ボンディングパッド3の開口端からスクライブエリア端までの距離を10μmとすることができ、1枚のウエハから切り出せる半導体装置の増加を図ることができる。一方、第1ボンディングパッド3の開口端からスクライブエリア端までの距離を従来例に係る半導体装置と同じとした場合には、スクライブエリアのマージンを拡大することができてスクライブ時における不良品の発生率を抑制できると共に、第1絶縁膜5及び第2絶縁膜7の形成マージンを拡大することができて、これら各絶縁膜5,7の形成を容易なものにすることができる。よって、これらのことから半導体素子の製造コストの低減を図ることができる。
【0023】
次に、本発明に係る半導体装置の第2例を図3乃至図5に基づいて説明する。図3は第2実施形態例に係る半導体装置のバンプ電極を省略した平面図、図4は図3のB−B断面図、図5は図3のC−C断面図である。
【0024】
本例の半導体装置は、これらの図に示すように、主面1の四隅部を除く部分については、第1実施形態例に係る半導体装置と同様に、第2絶縁膜7の外周縁を第1絶縁膜5の外周縁よりも内側に配置し、主面1の四隅部については、第1実施形態例に係る半導体装置とは逆に、第2絶縁膜7の外周縁を第1絶縁膜5の外周縁よりも外側に配置したことを特徴とする。その他の部分については第1実施形態例に係る半導体装置と同じであるので、説明を省略する。
【0025】
本例の半導体装置は、第1実施形態例に係る半導体装置と同様の効果を有するほか、主面1の四隅部について第2絶縁膜7の外周縁を第1絶縁膜5の外周縁よりも外側に配置したので、第1絶縁膜5の保護効果が高く、主面1に対する第1絶縁膜5の剥離を防止できて半導体装置の信頼性及び耐久性をより良好なものにすることができる。
【0026】
なお、前記各実施形態例においては、少なくとも主面1の四隅部を除く部分について、第2絶縁膜7の外周縁を第1絶縁膜5の外周縁よりも内側に配置したが、本発明の半導体装置はこれに限定されるものではなく、第2絶縁膜7の外周縁を第1絶縁膜5の外周縁と合致させることもできる。これによっても、前記各実施形態例に係る半導体装置と同様の効果を発揮することができる。
【0027】
【発明の効果】
以上説明したように、本発明の半導体装置は、第2絶縁膜の外周縁を第1絶縁膜の外周縁と合致させるか、第2絶縁膜の外周縁を第1絶縁膜の外周縁よりも内側に配置したので、第1絶縁膜の外周縁を基準としてスクライブエリアを設定することができ、第2絶縁膜にて第1絶縁膜を完全に覆い第2絶縁膜の外周縁を基準としてスクライブエリアを設定する場合に比べて第1ボンディングパッド3の開口端からスクライブエリア端までの距離を詰めることができて、1枚のウエハから切り出せる半導体装置の増加を図ることができる。一方、第1ボンディングパッドの開口端からスクライブエリア端までの距離を一定とした場合には、スクライブエリアのマージンを拡大することができてスクライブ時における不良品の発生率を抑制できると共に、第1絶縁膜及び第2絶縁膜の形成マージンを拡大することができてこれら各絶縁膜の形成を容易なものにすることができる。よって、これらのことから半導体素子の製造コストの低減を図ることができる。
【図面の簡単な説明】
【図1】第1実施形態例に係る半導体装置のバンプ電極を省略した平面図である。
【図2】図1のA−A断面図である。
【図3】第2実施形態例に係る半導体装置のバンプ電極を省略した平面図である。
【図4】図3のB−B断面図である。
【図5】図3のC−C断面図である。
【図6】従来例に係る半導体装置の斜視図である。
【図7】従来例に係る半導体装置のバンプ電極を省略した平面図である。
【図8】図7のD−D断面図である。
【符号の説明】
1 主面
2 半導体素子領域
3 第1ボンディングパッド(アルミパッド)
4 パッシベーション膜
5 第1絶縁膜
6 再配線
7 第2絶縁膜
8 第2ボンディングパッド
9 バンプ電極9(はんだボール)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a CSP (Chip Size Package) type semiconductor device in which rewiring is performed on a main surface, and in particular, a first insulating film that protects a semiconductor element region on the main surface and a second that protects the rewiring. The present invention relates to the structure of the insulating film.
[0002]
[Prior art]
In recent years, in order to cope with the demands for smaller, lighter, faster and more advanced electrical equipment, there are increasing demands for smaller, lighter, higher integration and easier mounting of semiconductor devices mounted on electrical equipment. ing.
[0003]
Conventionally, as shown in FIGS. 6 to 8, as a semiconductor device capable of meeting each of these requirements, a semiconductor element region 2 formed on the main surface 1 and an array along the outer periphery of the semiconductor element region 2 are provided. A first bonding pad (aluminum pad) 3 formed, a passivation film 4 formed on main surface 1 excluding a portion where first bonding pad 3 is formed to protect semiconductor element region 2, and on passivation film 4 A first insulating film 5 formed on the first insulating film 5, a rewiring 6 applied on the first insulating film 5 and having one end connected to the first bonding pad 3, and a first insulating film for protecting the rewiring 6 A semiconductor device called CSP having a second insulating film 7 formed on 5 and a bump electrode 9 set on a second bonding pad 8 formed on the other end of the rewiring 6 has been proposed. (For example, special Documents 1 to 4 see.).
[0004]
In this CSP type semiconductor device, since the bump electrode 9 can be disposed on the entire main surface 1, the bump electrode 9 is formed directly on the first bonding pads 3 arranged on the outer periphery of the semiconductor element region 2. Compared to the case, the distance between the bump electrodes 9 can be increased, so that the number of terminals of the semiconductor device can be increased, so that the functionality can be increased and the mounting on the electric device can be facilitated. In addition, since the semiconductor element is not resin-sealed, the semiconductor device can be reduced in size and weight.
[0005]
[Patent Document 1]
JP-A-4-19855 [0006]
[Patent Document 2]
Japanese Patent Application Laid-Open No. 6-237653
[Patent Document 3]
US Pat. No. 5,679,977 specification
[Patent Document 4]
US Pat. No. 5,801,441 specification
[Problems to be solved by the invention]
In the CSP type semiconductor device, after a wafer having a semiconductor element region 2, a first bonding pad 3, and a passivation film 4 formed on the main surface 1 by a normal wafer process, a first insulation is formed on the wafer. The film 5, the rewiring 6, the second insulating film 7, and the bump electrodes 9 are set on the second bonding pads 8 to obtain a completed wafer for CSP. It is produced by scribing.
[0010]
However, this type of conventional semiconductor device has a configuration in which the second insulating film 7 completely covers the first insulating film 5 as shown in FIGS. Since the outer peripheral edge of the second insulating film 7 protrudes in the outer peripheral direction of the main surface 1 rather than the outer peripheral edge of the first insulating film 5, the scribe area is set based on the outer peripheral edge of the second insulating film 7. Inevitably, there is a problem that it is difficult to increase the number of semiconductor devices that can be cut out from a single wafer and to reduce the manufacturing cost of the semiconductor elements because the set interval of each semiconductor element region 2 on the wafer becomes wide. In the example of FIG. 8, the scribe area is set assuming that the accuracy of the first insulating film 5 and the accuracy of the second insulating film 7 are ± 5 μm. In this case, the scribe area is scribed from the opening end of the first bonding pad 3. The distance to the end of the area is 20 μm.
[0011]
If the accuracy of the outer peripheral edge of the first insulating film 5 and the accuracy of the outer peripheral edge of the second insulating film 7 are increased, the set interval of each semiconductor element region 2 on the wafer can be reduced. Although the number of semiconductor devices that can be cut out from the wafer can be increased, the formation of the first insulating film 5 and the second insulating film 7 becomes difficult and the manufacturing efficiency of the wafer is reduced, and defective products are likely to be generated during scribing. Since the yield of non-defective products decreases, it is difficult to reduce the manufacturing cost of semiconductor elements in practice.
[0012]
The present invention has been made to solve such deficiencies in the prior art, and an object of the present invention is to provide an inexpensive semiconductor device that can cut out a larger number of semiconductor devices from a single wafer with a higher yield. There is to do.
[0013]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a semiconductor element region formed on a main surface, a first bonding pad arranged on the outer periphery of the semiconductor element region, a part of the first bonding pad, and the A first insulating film formed on the main surface excluding an outermost peripheral portion of the main surface; a rewiring formed on the first insulating film and having one end connected to the first bonding pad; and the rewiring Formed on the first insulating film except for a second bonding pad disposed on the first insulating film and a part of the second bonding pad and an outermost peripheral portion of the main surface. In the semiconductor device having the second insulating film and the bump electrode formed on the second bonding pad, at least the four corners of the main surface except for the outer peripheral edge of the second insulating film. Match with the outer periphery Was the outer peripheral edge of the second insulating film to the configuration of placing inside the outer peripheral edge of the first insulating film.
[0014]
As described above, when the outer peripheral edge of the second insulating film is matched with the outer peripheral edge of the first insulating film, or when the outer peripheral edge of the second insulating film is arranged inside the outer peripheral edge of the first insulating film, the first insulating film is formed. Since the scribe area can be set based on the outer peripheral edge of the first insulating film, the first insulating film is completely covered with the second insulating film, and the scribe area is set based on the outer peripheral edge of the second insulating film. The distance from the opening end of the first bonding pad to the end of the scribe area can be reduced, and the number of semiconductor devices that can be cut out from one wafer can be increased. On the other hand, when the distance from the opening end of the first bonding pad to the end of the scribe area is constant, the margin of the scribe area can be increased, and the occurrence rate of defective products at the time of scribing can be suppressed. The margin at the time of forming the insulating film 5 and the second insulating film 7 can be expanded, and the formation of these insulating films 5 and 7 can be facilitated. Therefore, it is possible to reduce the manufacturing cost of the semiconductor element.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first example of a semiconductor device according to the present invention will be described with reference to FIGS. FIG. 1 is a plan view in which bump electrodes of the semiconductor device according to the first embodiment are omitted, and FIG. 2 is a cross-sectional view taken along line AA in FIG.
[0016]
The basic structure of the semiconductor device of this example is the same as that of the conventional semiconductor device shown in FIGS. 6 to 8, and as shown in FIGS. 1 and 2, the semiconductor element region 2 formed on the main surface 1 is used. And the first bonding pads 3 arranged along the outer periphery of the semiconductor element region 2 and the main surface 1 excluding the formation portion of the first bonding pad 3 to protect the semiconductor element region 2. A passivation film 4, a first insulating film 5 formed on the passivation film 4, a rewiring 6 formed on the first insulating film 5 and having one end connected to the first bonding pad 3, and the rewiring In order to protect 6, a second insulating film 7 formed on the first insulating film 5 and a bump electrode 9 set on the second bonding pad 8 formed on the other end of the rewiring 6 are configured. ing.
[0017]
The semiconductor element region 2, the first bonding pad 3 and the passivation film 4 are formed by a normal wafer process, and the rewiring 6, the second insulating film 7 and the bump electrode 9 are formed by a rewiring process after the wafer process is completed. Done in
[0018]
The first insulating film 5 is made of a photosensitive resin material such as a photosensitive polyimide resin. As shown in FIGS. 1 and 2, a part (central portion) of the first bonding pad 3 and the outermost periphery of the main surface 1. It is formed on the main surface 1 excluding the portion. The first insulating film 5 is formed so as to cover the opening end of the first bonding pad 3 in order to prevent damage to the first bonding pad 3 when the rewiring 6 is formed. The first insulating film 5 is formed by applying a resin layer made of a photosensitive resin material to a uniform thickness on the main surface of a wafer serving as a semiconductor device, and then applying the resin layer to the first insulating film 5. The exposed portion is exposed to cure to cure the exposed portion, and then the unexposed portion is removed by development processing.
[0019]
The rewiring 6 including the second bonding pad 8 is formed by copper plating and arranged on the first insulating film 5 as shown in FIG. The rewiring 6 including the second bonding pad 8 is also formed by photolithography. That is, chromium or copper is uniformly sputtered on the first insulating film 5 to form a seed layer, and then a photoresist layer is applied on the seed layer to a uniform thickness, and the photoresist layer is applied to the second insulating layer 5. The shape of the rewiring 6 including the bonding pad 8 is exposed. Next, the unexposed portion is removed by development processing, and the seed layer corresponding to the exposed portion is removed by chemical etching. Next, the remaining photoresist layer is removed by ashing to expose the seed layer corresponding to the exposed portion. Finally, the exposed seed layer is subjected to copper plating to form a rewiring 6 including the second bonding pad 8.
[0020]
The second insulating film 7 is made of a photosensitive resin material such as a photosensitive polyimide resin. As shown in FIGS. 1 and 2, a part (center portion) of the second bonding pad 8 and the outermost periphery of the main surface 1. It is formed on the first insulating film 5 excluding the portion. The outer peripheral edge of the second insulating film 7 is disposed inside the outer peripheral edge of the first insulating film 5. The second insulating film 7 is also formed by the same method as the first insulating film 5.
[0021]
The bump electrode 9 is formed with a solder ball made of lead-free solder, eutectic solder, or the like, and is installed on the second bonding pad 8.
[0022]
In the semiconductor device of this example, since the outer peripheral edge of the second insulating film 7 is arranged inside the outer peripheral edge of the first insulating film 5, the scribe area can be set with reference to the outer peripheral edge of the first insulating film 5. The first insulating film 5 is completely covered with the second insulating film 7, and the scribe area is formed from the opening end of the first bonding pad 3 as compared with the case where the scribe area is set based on the outer peripheral edge of the second insulating film 7. Since the distance to the end can be reduced, the number of semiconductor devices that can be cut out from one wafer can be increased. That is, as shown in FIG. 2, when the formation accuracy of the outer peripheral edge of the first insulating film 5 is set to ± 5 μm as in the conventional semiconductor device, the opening edge of the first bonding pad 3 extends to the edge of the scribe area. Thus, the number of semiconductor devices that can be cut out from one wafer can be increased. On the other hand, when the distance from the opening end of the first bonding pad 3 to the end of the scribe area is the same as that of the semiconductor device according to the conventional example, the margin of the scribe area can be increased, and defective products are generated at the time of scribing. In addition to being able to suppress the rate, the formation margin of the first insulating film 5 and the second insulating film 7 can be increased, and the formation of these insulating films 5 and 7 can be facilitated. Therefore, it is possible to reduce the manufacturing cost of the semiconductor element.
[0023]
Next, a second example of the semiconductor device according to the present invention will be described with reference to FIGS. 3 is a plan view in which the bump electrodes of the semiconductor device according to the second embodiment are omitted, FIG. 4 is a cross-sectional view taken along line BB in FIG. 3, and FIG. 5 is a cross-sectional view taken along line CC in FIG.
[0024]
As shown in these drawings, in the semiconductor device of this example, the outer peripheral edge of the second insulating film 7 is the same as that of the semiconductor device according to the first embodiment, except for the four corners of the main surface 1. In contrast to the semiconductor device according to the first embodiment, the outer peripheral edge of the second insulating film 7 is arranged on the inner side of the outer peripheral edge of the first insulating film 5 and the four corners of the main surface 1 are opposite to the first insulating film. 5 is arranged outside the outer peripheral edge. Since other parts are the same as those of the semiconductor device according to the first embodiment, description thereof is omitted.
[0025]
The semiconductor device of this example has the same effect as that of the semiconductor device according to the first embodiment, and the outer peripheral edge of the second insulating film 7 is set to be larger than the outer peripheral edge of the first insulating film 5 at the four corners of the main surface 1. Since the first insulating film 5 is disposed on the outside, the protective effect of the first insulating film 5 is high, the peeling of the first insulating film 5 from the main surface 1 can be prevented, and the reliability and durability of the semiconductor device can be improved. .
[0026]
In each of the above embodiments, the outer peripheral edge of the second insulating film 7 is arranged on the inner side of the outer peripheral edge of the first insulating film 5 at least in the portion excluding the four corners of the main surface 1. The semiconductor device is not limited to this, and the outer peripheral edge of the second insulating film 7 can be matched with the outer peripheral edge of the first insulating film 5. Also by this, the same effect as the semiconductor device according to each of the above embodiments can be exhibited.
[0027]
【The invention's effect】
As described above, in the semiconductor device of the present invention, the outer peripheral edge of the second insulating film is made to coincide with the outer peripheral edge of the first insulating film, or the outer peripheral edge of the second insulating film is made to be more than the outer peripheral edge of the first insulating film. Since it is arranged on the inner side, the scribe area can be set with the outer peripheral edge of the first insulating film as a reference, and the first insulating film is completely covered with the second insulating film, and the scribe is made with reference to the outer peripheral edge of the second insulating film. Compared with the case where the area is set, the distance from the opening end of the first bonding pad 3 to the end of the scribe area can be reduced, and the number of semiconductor devices that can be cut out from one wafer can be increased. On the other hand, when the distance from the opening end of the first bonding pad to the end of the scribe area is constant, the margin of the scribe area can be increased, and the occurrence rate of defective products at the time of scribing can be suppressed. The formation margin of the insulating film and the second insulating film can be expanded, and the formation of these insulating films can be facilitated. Therefore, it is possible to reduce the manufacturing cost of the semiconductor element.
[Brief description of the drawings]
FIG. 1 is a plan view in which bump electrodes of a semiconductor device according to a first embodiment are omitted.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
FIG. 3 is a plan view in which bump electrodes of the semiconductor device according to the second embodiment are omitted.
4 is a cross-sectional view taken along the line BB in FIG.
FIG. 5 is a cross-sectional view taken along the line CC of FIG.
FIG. 6 is a perspective view of a semiconductor device according to a conventional example.
FIG. 7 is a plan view in which bump electrodes of a semiconductor device according to a conventional example are omitted.
8 is a cross-sectional view taken along the line DD of FIG.
[Explanation of symbols]
1 Main surface 2 Semiconductor element region 3 First bonding pad (aluminum pad)
4 Passivation film 5 First insulating film 6 Rewiring 7 Second insulating film 8 Second bonding pad 9 Bump electrode 9 (solder ball)

Claims (1)

主面に形成された半導体素子領域と、当該半導体素子領域の外周部に配列された第1ボンディングパッドと、前記第1ボンディングパッドの一部及び前記主面の最外周部を除く前記主面上に形成された第1絶縁膜と、当該第1絶縁膜上に形成され、一端が前記第1ボンディングパッドに接続された再配線と、当該再配線の他端に形成され、前記第1絶縁膜上に配置された第2ボンディングパッドと、当該第2ボンディングパッドの一部及び前記主面の最外周部を除く前記第1絶縁膜上に形成された第2絶縁膜と、前記第2ボンディングパッドに形成されたバンプ電極とを有する半導体装置において、少なくとも前記主面の四隅部を除き、前記第2絶縁膜の外周縁を前記第1絶縁膜の外周縁と合致させるか、前記第2絶縁膜の外周縁を前記第1絶縁膜の外周縁よりも内側に配置したことを特徴とする半導体装置。On the main surface excluding the semiconductor element region formed on the main surface, the first bonding pads arranged on the outer peripheral portion of the semiconductor element region, a part of the first bonding pad and the outermost peripheral portion of the main surface A first insulating film formed on the first insulating film, one end of which is connected to the first bonding pad, and the other end of the rewiring is formed on the first insulating film. A second bonding pad disposed above, a second insulating film formed on the first insulating film excluding a part of the second bonding pad and the outermost peripheral portion of the main surface, and the second bonding pad In the semiconductor device having the bump electrode formed on, the outer peripheral edge of the second insulating film is made to coincide with the outer peripheral edge of the first insulating film except at least the four corners of the main surface, or the second insulating film The outer periphery of the first Wherein a disposed inside the outer peripheral edge of the edge layer.
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