JP2019140365A - 薄膜フリップチップパッケージ及びそのフレキシブル基板 - Google Patents
薄膜フリップチップパッケージ及びそのフレキシブル基板 Download PDFInfo
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- JP2019140365A JP2019140365A JP2018078830A JP2018078830A JP2019140365A JP 2019140365 A JP2019140365 A JP 2019140365A JP 2018078830 A JP2018078830 A JP 2018078830A JP 2018078830 A JP2018078830 A JP 2018078830A JP 2019140365 A JP2019140365 A JP 2019140365A
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- thin film
- bent portion
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- 239000010409 thin film Substances 0.000 title claims abstract description 59
- 239000000758 substrate Substances 0.000 title claims abstract description 56
- 239000010410 layer Substances 0.000 claims description 39
- 239000011241 protective layer Substances 0.000 claims description 20
- 238000005452 bending Methods 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 238000000608 laser ablation Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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Abstract
Description
110 アクティブサーフェス
120 バンプ
200 フレキシブル基板
210 薄膜
211 第一表面
211a チップ設置領域
212 第二表面
220 導電路層
230 保護層
240 平坦部
240a 第一平坦部
240b 第二平坦部
240c 第三平坦部
250 曲げ部
250a 第一曲げ部
250b 第二曲げ部
260 溝部
260a 第一溝部
260b 第二溝部
261 溝部の底面
300 パッケージ用接着剤
A 薄膜フリップチップパッケージ
P1 表示パネル
P2 回路基板
Claims (20)
- チップと、薄膜及び導電路層を有するフレキシブル基板と、を備える薄膜フリップチップパッケージであって、
前記フレキシブル基板の前記薄膜は、第一表面及び前記第一表面に対応する第二表面を含み、前記フレキシブル基板の前記導電路層は、前記第一表面に形成されると共に前記チップに電気的に接続され、少なくとも1つの溝部が前記第二表面に凹設され、前記溝部が溝部の底面を有し、
前記フレキシブル基板が前記第一表面に位置する前記導電路層を介して外部の電子素子に接合されると、前記フレキシブル基板が湾曲して複数の平坦部及び少なくとも1つの曲げ部を形成し、
前記曲げ部はこれら前記平坦部の間に位置し、前記溝部は前記曲げ部に位置することを特徴とする薄膜フリップチップパッケージ。 - 前記溝部は前記薄膜にレーザーアブレーションが施されることにより形成されていることを特徴とする請求項1に記載の薄膜フリップチップパッケージ。
- 前記溝部の底面と前記第一表面との間には厚さを有し、前記厚さは6μmより薄くないことを特徴とする請求項1に記載の薄膜フリップチップパッケージ。
- 前記厚さは6〜20μmの間であることを特徴とする請求項3に記載の薄膜フリップチップパッケージ。
- 前記溝部は前記曲げ部の外縁に位置することを特徴とする請求項1に記載の薄膜フリップチップパッケージ。
- 前記フレキシブル基板は前記第一表面及び前記導電路層を被覆させる保護層を更に有し、部分的な前記導電路層が前記保護層と前記溝部との間に位置することを特徴とする請求項1に記載の薄膜フリップチップパッケージ。
- 部分的な前記導電路層が前記チップと前記溝部との間に位置することを特徴とする請求項1に記載の薄膜フリップチップパッケージ。
- 前記溝部の幅は前記チップの幅より狭くないことを特徴とする請求項7に記載の薄膜フリップチップパッケージ。
- 前記チップと前記フレキシブル基板との間に充填されるパッケージ用接着剤を更に備え、
前記溝部の幅は前記パッケージ用接着剤の幅より狭くないことを特徴とする請求項7に記載の薄膜フリップチップパッケージ。 - 前記フレキシブル基板は湾曲後に第一曲げ部及び第二曲げ部が形成され、
第一溝部及び第二溝部は前記第二表面に凹設されると共に前記第一曲げ部及び前記第二曲げ部にそれぞれ位置し、前記チップは前記第一曲げ部と前記第二曲げ部との間に位置することを特徴とする請求項1に記載の薄膜フリップチップパッケージ。 - 前記フレキシブル基板は前記第一表面及び前記導電路層を被覆させる保護層を更に有し、部分的な前記導電路層が前記保護層と前記第一溝部との間に位置し、且つ部分的な前記導電路層は前記保護層と前記第二溝部との間に位置することを特徴とする、請求項10に記載の薄膜フリップチップパッケージ。
- 導電路層と、第一表面及び前記第一表面に対応する第二表面を有し、
前記導電路層は前記第一表面に形成され、少なくとも1つの溝部が前記第二表面に凹設され、前記溝部は溝部の底面を有するフレキシブル基板であって、
前記フレキシブル基板が前記第一表面に位置する前記導電路層を介して外部の電子素子に接合されると、前記フレキシブル基板が湾曲して複数の平坦部及び少なくとも1つの曲げ部を形成し、
前記曲げ部はこれら前記平坦部の間に位置し、前記溝部は前記曲げ部に位置する薄膜を備えることを特徴とするフレキシブル基板。 - 前記溝部は前記薄膜にレーザーアブレーションが施されることにより形成されていることを特徴とする請求項12に記載のフレキシブル基板。
- 前記溝部の底面と前記第一表面との間には厚さを有し、前記厚さは6μmより薄くないことを特徴とする、請求項12に記載のフレキシブル基板。
- 前記厚さは6〜20μmの間であることを特徴とする請求項14に記載のフレキシブル基板。
- 前記溝部は前記曲げ部の外縁に位置することを特徴とする請求項12に記載のフレキシブル基板。
- 前記第一表面及び前記導電路層を被覆させる保護層を更に備え、
部分的な前記導電路層が前記保護層と前記溝部との間に位置することを特徴とする請求項12に記載のフレキシブル基板。 - チップ設置領域は前記溝部に対応する前記第一表面に位置することを特徴とする請求項12に記載のフレキシブル基板。
- 前記フレキシブル基板は湾曲後に第一曲げ部及び第二曲げ部を形成し、
第一溝部及び第二溝部は前記第二表面に凹設されると共に前記第一曲げ部及び前記第二曲げ部にそれぞれ位置し、チップ設置領域は前記第一表面に位置すると共に前記第一曲げ部と前記第二曲げ部との間に位置することを特徴とする請求項12に記載のフレキシブル基板。 - 前記第一表面及び前記導電路層を被覆させる保護層を更に備え、
部分的な前記導電路層が前記保護層と前記第一溝部との間に位置し、且つ部分的な前記導電路層が前記保護層と前記第二溝部との間に位置することを特徴とする請求項19に記載のフレキシブル基板。
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