JP7544747B2 - フリップチップレーザーボンディングシステム - Google Patents
フリップチップレーザーボンディングシステム Download PDFInfo
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- JP7544747B2 JP7544747B2 JP2021565104A JP2021565104A JP7544747B2 JP 7544747 B2 JP7544747 B2 JP 7544747B2 JP 2021565104 A JP2021565104 A JP 2021565104A JP 2021565104 A JP2021565104 A JP 2021565104A JP 7544747 B2 JP7544747 B2 JP 7544747B2
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- mask
- laser
- substrate
- semiconductor chip
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- 239000004065 semiconductor Substances 0.000 claims description 124
- 239000000758 substrate Substances 0.000 claims description 100
- 230000005540 biological transmission Effects 0.000 claims description 47
- 238000007689 inspection Methods 0.000 claims description 31
- 229910001632 barium fluoride Inorganic materials 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 239000006117 anti-reflective coating Substances 0.000 claims description 4
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 description 27
- 238000000034 method Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 230000032258 transport Effects 0.000 description 8
- 230000004907 flux Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000010453 quartz Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000012780 transparent material Substances 0.000 description 4
- 229910016036 BaF 2 Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- H—ELECTRICITY
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
- H01L21/563—Encapsulation of active face of flip-chip device, e.g. underfilling or underencapsulation of flip-chip, encapsulation preform on chip or mounting substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
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- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/034—Observing the temperature of the workpiece
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- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0626—Energy control of the laser beam
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
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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
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- 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
- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
- H01L24/13—Structure, shape, material or disposition of the bump connectors prior to the connecting process of an individual bump connector
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- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L24/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L2924/35—Mechanical effects
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Description
Claims (9)
- 基板の上面にボンディングするための複数の半導体チップが配置された状態の前記基板を供給する供給ユニットと、
前記供給ユニットから前記基板を受け取って前記基板の下面を固定する固定ユニットと、
前記固定ユニットに固定された基板にレーザービームを照射して前記半導体チップと基板とをボンディングするレーザーヘッド、及び前記レーザーヘッドを移送するレーザー移送部を備えるレーザーユニットと、
前記レーザーユニットのレーザーヘッドから照射されるレーザービームを透過させ、波長3μm以上9μm以下の領域帯を含む赤外線を透過させる透過部を備えるマスクと、
前記マスクを前記固定ユニットの上側に据え置くマスク据置ユニットと、
前記マスクの透過部が前記固定ユニットに固定された前記基板の複数の半導体チップを加圧することができるように前記マスク据置ユニットと前記固定ユニットのうちのいずれか一つを他の一つに対して昇降させる加圧ユニットと、
前記固定ユニットから前記基板の伝達を受けて排出する排出ユニットと、
前記レーザーユニットのレーザーヘッドによってレーザービームが照射される前記半導体チップを前記マスクの前記透過部を通して撮影する赤外線カメラと、
前記供給ユニット、前記固定ユニット及び前記排出ユニットの作動を制御し、前記赤外線カメラで測定された値を用いて前記レーザーユニットのレーザーヘッドの作動を制御する制御部と、を含む、フリップチップレーザーボンディングシステム。 - 前記マスクの透過部は、
波長4μm以上6.5μm以下の領域帯を含む赤外線を透過させる、請求項1に記載のフリップチップレーザーボンディングシステム。 - 基板の上面にボンディングするための複数の半導体チップが配置された状態の前記基板を供給する供給ユニットと、
前記供給ユニットから前記基板の供給を受けて前記基板の下面を固定する固定ユニットと、
前記固定ユニットに固定された基板にレーザービームを照射して前記半導体チップと基板とをボンディングするレーザーヘッド、及び前記レーザーヘッドを移送するレーザー移送部を備えるレーザーユニットと、
前記レーザーユニットのレーザーヘッドから照射されるレーザービームを透過させ、BaF2及びZnSeのうちのいずれか一つで形成される透過部を備えるマスクと、
前記マスクを前記固定ユニットの上側に据え置くマスク据置ユニットと、
前記マスクの透過部が前記固定ユニットに固定された前記基板の複数の半導体チップを加圧することができるように前記マスク据置ユニットと前記固定ユニットのうちのいずれか一つを他の一つに対して昇降させる加圧ユニットと、
前記固定ユニットから前記基板の伝達を受けて排出する排出ユニットと、
前記レーザーユニットのレーザーヘッドによってレーザービームが照射される前記半導体チップを前記マスクの前記透過部を通して撮影する赤外線カメラと、
前記供給ユニット、前記固定ユニット及び前記排出ユニットの作動を制御し、前記赤外線カメラで測定された値を用いて前記レーザーユニットのレーザーヘッドの作動を制御する制御部と、を含む、フリップチップレーザーボンディングシステム。 - 前記赤外線カメラは、前記レーザーユニットのレーザーヘッドによって前記半導体チップにレーザービームが照射されるときに前記半導体チップを撮影し、
前記制御部は、前記赤外線カメラで測定された値を受け取って前記レーザーユニットのレーザーヘッドから照射されるレーザービームの強度を調節する、請求項1乃至3のいずれか一項に記載のフリップチップレーザーボンディングシステム。 - 前記マスクを前記マスク据置ユニットに対して供給又は排出するマスク交換ユニットをさらに含む、請求項4に記載のフリップチップレーザーボンディングシステム。
- 前記マスクの下側から前記マスクに対して光を照射する検査ランプと、
前記マスク又は基板を上側から撮影する検査カメラと、をさらに含み、
前記制御部は、前記検査カメラが前記マスクを撮影した画像を用いて前記マスクの汚染有無を判断する、請求項4に記載のフリップチップレーザーボンディングシステム。 - 前記検査ランプは、マスク交換ユニットに設置され、
前記検査カメラは、前記レーザーユニットに設置されて前記レーザー移送部によって移送される、請求項6に記載のフリップチップレーザーボンディングシステム。 - 前記マスクの複数の透過部の上面には、それぞれウエイト窪みが凹設され、
前記マスクは、前記基板に配置された複数の半導体チップをそれぞれ加圧する重さを増やすことができるように、前記透過部のウエイト窪みに据え置かれるウエイトをさらに含む、請求項4に記載のフリップチップレーザーボンディングシステム。 - 前記マスクの透過部には無反射コーティングが施された、請求項4に記載のフリップチップレーザーボンディングシステム。
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JP2019009441A (ja) | 2017-06-20 | 2019-01-17 | プロテック カンパニー リミテッドProtec Co., Ltd. | 半導体チップボンディング装置及び半導体チップボンディング方法 |
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