JP4773167B2 - ハイブリッド金バンプを含む微細電子素子チップ、これのパッケージ、これを含む液晶ディスプレー装置及びこのような微細電子素子チップの製造方法 - Google Patents
ハイブリッド金バンプを含む微細電子素子チップ、これのパッケージ、これを含む液晶ディスプレー装置及びこのような微細電子素子チップの製造方法 Download PDFInfo
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- JP4773167B2 JP4773167B2 JP2005265758A JP2005265758A JP4773167B2 JP 4773167 B2 JP4773167 B2 JP 4773167B2 JP 2005265758 A JP2005265758 A JP 2005265758A JP 2005265758 A JP2005265758 A JP 2005265758A JP 4773167 B2 JP4773167 B2 JP 4773167B2
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- Prior art keywords
- bump
- plating layer
- chip
- gold plating
- cyan
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- 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.)
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- 239000010931 gold Substances 0.000 title claims description 246
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims description 227
- 229910052737 gold Inorganic materials 0.000 title claims description 225
- 238000004377 microelectronic Methods 0.000 title claims description 43
- 238000004519 manufacturing process Methods 0.000 title claims description 34
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 12
- 238000007747 plating Methods 0.000 claims description 128
- 238000000034 method Methods 0.000 claims description 48
- 239000000758 substrate Substances 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 25
- 238000002161 passivation Methods 0.000 claims description 12
- 229920002120 photoresistant polymer Polymers 0.000 claims description 12
- 238000009713 electroplating Methods 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 8
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 238000004544 sputter deposition Methods 0.000 claims description 5
- 229910006164 NiV Inorganic materials 0.000 claims description 3
- 229910008599 TiW Inorganic materials 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 1
- 239000010408 film Substances 0.000 description 38
- 239000000523 sample Substances 0.000 description 26
- 238000012360 testing method Methods 0.000 description 23
- 230000008569 process Effects 0.000 description 21
- 239000013078 crystal Substances 0.000 description 18
- 239000010949 copper Substances 0.000 description 8
- 238000011109 contamination Methods 0.000 description 7
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
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- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000002313 adhesive film Substances 0.000 description 4
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- 238000004380 ashing Methods 0.000 description 3
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- PCHJSUWPFVWCPO-AKLPVKDBSA-N gold-200 Chemical compound [200Au] PCHJSUWPFVWCPO-AKLPVKDBSA-N 0.000 description 3
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- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 230000002250 progressing effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
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- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
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- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
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- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
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- H01L24/10—Bump connectors ; Manufacturing methods related thereto
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- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
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Description
110:チップパッド
120:パッシベーション層
130:バンプ下部導電層
140:非導電膜
142:非導電膜パターン
150:シアン金メッキ層
160:非シアン金メッキ層
170:ハイブリッド金バンプ
200:LDIチップ
300:液晶ディスプレー装置
310:TFTパネル
320:カラーフィルターパネル
325:LCDパネルアセンブリー
330:可撓性基板
335:PCB
340:データライン
345:ゲート駆動信号伝送ライン
350:ゲートライン
355:ゲート駆動信号伝送ライン
360:パッド
370:ACF
372:接着フィルム
374:導電性粒子
400:テープ配線基板
410:フレキシブルフィルム
420:配線
425:ウィンドー
430:ソルダレジスト
440:ユーザー領域
450:レジン
Claims (35)
- 基板上に形成された微細電子素子と連結されて、前記微細電子素子とチップ外部間の電気的なコンタクトを形成するチップパッド;及び
前記チップパッド上に形成されて、少なくとも2層以上の複合膜で構成されたバンプを含み、
前記バンプは前記チップパッド上に非シアン金メッキ層が位置して、前記非シアン金メッキ層上にシアン金メッキ層が位置する構造である
ことを特徴とする微細電子素子チップ。 - 前記バンプはシアン金メッキ層と非シアン金メッキ層が積層されたハイブリッド金バンプである
ことを特徴とする請求項1に記載の微細電子素子チップ。 - 前記ハイブリッド金バンプの厚さは1−20μmである
ことを特徴とする請求項2に記載の微細電子素子チップ。 - 前記シアン金メッキ層及び非シアン金メッキ層の厚さはそれぞれ0.5μm以上である
ことを特徴とする請求項3に記載の微細電子素子チップ。 - 基板上に形成された微細電子素子と連結されて、前記微細電子素子とチップ外部間の電気的なコンタクトを形成するチップパッドと;
前記微細電子素子を保護して前記チップパッドを露出させるパッシベーション層と;
前記パッシベーション層により露出した前記チップパッド上に形成されて、少なくとも2層以上の複合膜で構成されたバンプ;及び
前記チップパッドとバンプ間に形成されて、前記チップパッドとバンプ間の相互拡散を防止して相互接着を助けるバンプ下部導電層を含み、
前記バンプは前記チップパッド上に非シアン金メッキ層が位置して、前記非シアン金メッキ層上に前記シアン金メッキ層が位置する構造である
ことを特徴とする微細電子素子チップ。 - 前記バンプはシアン金メッキ層と非シアン金メッキ層が積層されたハイブリッド金バンプである
ことを特徴とする請求項5に記載の微細電子素子チップ。 - 前記ハイブリッド金バンプの厚さは1−20μmである
ことを特徴とする請求項6に記載の微細電子素子チップ。 - 前記シアン金メッキ層及び非シアン金メッキ層の厚さはそれぞれ0.5μm以上である
ことを特徴とする請求項7に記載の微細電子素子チップ。 - 前記バンプ下部導電層はTiW、Cr、Cu、Ti、Ni、NiV、Pd、Cr/Cu、TiW/Cu、TiW/AuまたはNiV/Cuで構成される
ことを特徴とする請求項7に記載の微細電子素子チップ。 - 前記バンプ下部導電層はTiWを0.005−0.5μm厚さで、Auを0.005−0.5μm厚さで積層したTiW/Au構造である
ことを特徴とする請求項9に記載の微細電子素子チップ。 - 前記ハイブリッド金バンプは一つ以上のシアン金メッキ層と一つ以上の非シアン金メッキ層が交代で積層された構造である
ことを特徴とする請求項6に記載の微細電子素子チップ。 - 第1項ないし第11項のうちいずれか一つの項による微細電子素子チップ;及び
外部接続端子と内部接続端子で構成された配線を含んで、前記微細電子素子チップの前記バンプと前記内部接続端子が電気的に接続するテープ配線基板を含む
ことを特徴とするパッケージ。 - 微細電子素子チップとの接続のための配線が形成されている液晶表示パネルアセンブリー;及び
第1項ないし第11項のうちいずれか一つの項による微細電子素子チップを含んで、
前記配線と前記微細電子素子チップの前記バンプが電気的に接続する
ことを特徴とする液晶ディスプレー装置。 - 前記微細電子素子チップと前記液晶表示パネルアセンブリーはCOG、TCPまたはCOF方式で接続される
ことを特徴とする請求項13に記載の液晶ディスプレー装置。 - (a)基板上に形成された微細電子素子と連結されて、前記微細電子素子とチップ外部間の電気的なコンタクトを形成するチップパッドを準備する段階;及び
(b)前記チップパッド上に少なくとも2層以上の複合膜で構成されたバンプを形成する段階を含み、
前記(b)段階は前記チップパッド上に非シアン金メッキ層を先に形成した後、シアン金メッキ層を形成する
ことを特徴とする微細電子素子チップの製造方法。 - 前記(b)段階は前記チップパッド上にシアン金メッキ層と非シアン金メッキ層の積層構造で構成されたハイブリッド金バンプを形成する段階である
ことを特徴とする請求項15に記載の微細電子素子チップの製造方法。 - 前記(b)段階は電解メッキ法を利用する
ことを特徴とする請求項16に記載の微細電子素子チップの製造方法。 - 前記シアン金メッキ層はKAu(CN)2系の鍍金液を用いて形成して、前記非シアン金メッキ層はNa3Au(SO3)2系の鍍金液を用いて形成する
ことを特徴とする請求項17に記載の微細電子素子チップの製造方法。 - 前記ハイブリッド金バンプは1−20μmの厚さで形成する
ことを特徴とする請求項17に記載の微細電子素子チップの製造方法。 - 前記シアン金メッキ層及び非シアン金メッキ層はそれぞれ0.5μm以上の厚さで形成する
ことを特徴とする請求項19に記載の微細電子素子チップの製造方法。 - 前記(b)段階後、熱処理する段階をさらに含む
ことを特徴とする請求項16に記載の微細電子素子チップの製造方法。 - 前記熱処理は250−360℃の酸素または窒素雰囲気で遂行する
ことを特徴とする請求項21に記載の微細電子素子チップの製造方法。 - (a)チップパッドを露出させるパッシベーション層を形成する段階と;
(b)前記(a)段階の結果物上にバンプ下部導電層を形成する段階と;
(c)前記バンプ下部導電層上にバンプが形成される領域を限定する非導電膜パターンを形成する段階と;
(d)前記非導電膜パターンをマスクにして、前記バンプ下部導電層上に少なくとも2層以上の複合膜で構成されたバンプを形成する段階;及び
(e)前記非導電膜パターンを除去する段階を含み、
前記(d)段階は前記バンプが形成される領域に非シアン金メッキ層を先に形成した後、シアン金メッキ層を形成する
ことを特徴とする微細電子素子チップの製造方法。 - 前記(d)段階は前記バンプ下部導電層上にシアン金メッキ層と非シアン金メッキ層の積層構造で構成されたハイブリッド金バンプを形成する段階である
ことを特徴とする請求項23に記載の微細電子素子チップの製造方法。 - 前記(d)段階は電解メッキ法を利用する
ことを特徴とする請求項24に記載の微細電子素子チップの製造方法。 - 前記シアン金メッキ層はKAu(CN)2系の鍍金液を用いて形成して、前記非シアン金メッキ層はNa3Au(SO3)2系の鍍金液を用いて形成する
ことを特徴とする請求項25に記載の微細電子素子チップの製造方法。 - 前記ハイブリッド金バンプは1−20μmの厚さで形成する
ことを特徴とする請求項25に記載の微細電子素子チップの製造方法。 - 前記シアン金メッキ層及び非シアン金メッキ層はそれぞれ0.5μm以上の厚さで形成する
ことを特徴とする請求項27に記載の微細電子素子チップの製造方法。 - 前記(b)段階はTiW、Cr、Cu、Ti、Ni、NiV、Pd、Cr/Cu、TiW/Cu、TiW/AuまたはNiV/Cuで前記バンプ下部導電層を形成する段階である
ことを特徴とする請求項24に記載の微細電子素子チップの製造方法。 - 前記(b)段階はTiWとAuを順次的にスパッタリングしてTiW/Au構造を有する前記バンプ下部導電層を形成する段階である
ことを特徴とする請求項29に記載の微細電子素子チップの製造方法。 - 前記バンプ下部導電層はTiWを0.005−0.5μm厚さでAuを0.005−0.5μm厚さで積層したTiW/Auで形成する
ことを特徴とする請求項30に記載の微細電子素子チップの製造方法。 - 前記(e)段階後、前記ハイブリッド金バンプをマスクにして前記バンプ下部導電層を除去する段階をさらに含む
ことを特徴とする請求項24に記載の微細電子素子チップの製造方法。 - 前記バンプ下部導電層を除去した後、熱処理する段階をさらに含む
ことを特徴とする請求項32に記載の微細電子素子チップの製造方法。 - 前記熱処理は250−360℃の酸素または窒素雰囲気で遂行する
ことを特徴とする請求項33に記載の微細電子素子チップの製造方法。 - 前記非導電膜パターンはフォトレジストパターン層である
ことを特徴とする請求項24に記載の微細電子素子チップの製造方法。
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