TW202129700A - Semiconductor chip cleaning method and semiconductor chip cleaning device - Google Patents
Semiconductor chip cleaning method and semiconductor chip cleaning device Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 219
- 238000004140 cleaning Methods 0.000 title claims abstract description 181
- 238000000034 method Methods 0.000 title claims abstract description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims description 29
- 239000007789 gas Substances 0.000 claims description 28
- 239000001257 hydrogen Substances 0.000 claims description 26
- 229910052739 hydrogen Inorganic materials 0.000 claims description 26
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 23
- 239000010408 film Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 20
- 238000005406 washing Methods 0.000 claims description 18
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000012790 adhesive layer Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 229920001410 Microfiber Polymers 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 239000003658 microfiber Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 150000002431 hydrogen Chemical class 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
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- 235000012431 wafers Nutrition 0.000 description 185
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L21/18—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 the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L21/18—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 the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L21/52—Mounting semiconductor bodies in containers
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- Cleaning Or Drying Semiconductors (AREA)
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Abstract
Description
本揭示是有關於一種進行半導體晶片的洗淨的半導體晶片洗淨方法及半導體晶片洗淨裝置。The present disclosure relates to a semiconductor wafer cleaning method and a semiconductor wafer cleaning device for cleaning semiconductor wafers.
半導體晶片是將8吋或12吋大小的晶圓切斷成規定的大小而製造。於切斷時,為了不使所切斷的半導體晶片分散,於背面貼附切割薄膜,自表面側利用切割鋸或雷射光線等來將晶圓切斷。此時,貼附於背面的切割薄膜被稍微切入,但處於不被切斷而保持各半導體晶片的狀態。然後,經切斷的各半導體晶片被逐個自切割薄膜拾取並被輸送至倒裝晶片接合等下一工序。Semiconductor wafers are manufactured by cutting 8-inch or 12-inch wafers into predetermined sizes. During cutting, in order not to disperse the cut semiconductor wafer, a dicing film is attached to the back surface, and the wafer is cut from the surface side with a dicing saw or a laser beam. At this time, the dicing film attached to the back surface is slightly cut in, but it is in a state where each semiconductor wafer is held without being cut. Then, the cut semiconductor wafers are picked up one by one from the dicing film and transported to the next process such as flip chip bonding.
於切割時,半導體晶圓的切削屑或切割薄膜的切削屑等異物附著於半導體晶片的表面上,因此於切割時或者切割後對半導體晶片的表面或者經切斷的晶圓的表面進行洗淨。半導體晶片的洗淨例如如日本專利特開2003-257912號公報所記載般,有時使用將洗淨流體吹附至半導體晶片的方法。During dicing, foreign matter such as chips from the semiconductor wafer or chips from the dicing film adheres to the surface of the semiconductor wafer. Therefore, the surface of the semiconductor wafer or the surface of the cut wafer is cleaned during or after dicing. . For cleaning of semiconductor wafers, as described in, for example, Japanese Patent Application Laid-Open No. 2003-257912, a method of blowing a cleaning fluid to the semiconductor wafer may be used.
另外,於進行對晶圓的表面進行鏡面研磨的精加工之後,進行用於對晶圓的表面進行清潔化的洗淨。例如,於日本專利第4675448號公報中提出了使用鹼系洗淨液或酸系洗淨液或者臭氧水來進行洗淨。In addition, after performing the finish machining of mirror-polishing the surface of the wafer, washing for cleaning the surface of the wafer is performed. For example, in Japanese Patent No. 4675448, it is proposed to use an alkali-based cleaning solution, an acid-based cleaning solution, or ozone water for cleaning.
近年來,多使用將其他半導體晶片直接接合於半導體晶片上的直接接合。於進行直接接合的情況下,即使於表面上附著有幾微米~亞微米大小的微細的異物,亦存在接合品質下降的情況。In recent years, direct bonding in which other semiconductor wafers are directly bonded to semiconductor wafers has been frequently used. In the case of direct bonding, even if fine foreign matter of a few micrometers to sub-micrometer size adheres to the surface, the bonding quality may be degraded.
另一方面,於專利文獻1、專利文獻2所記載的現有技術的洗淨方法中,能夠以幾十微米左右的大小進行異物的去除,但難以進行如於直接接合中成為問題般的幾微米~亞微米的微細的異物的去除。On the other hand, in the prior art cleaning methods described in Patent Document 1 and Patent Document 2, foreign matter can be removed with a size of about several tens of microns, but it is difficult to perform a few microns as a problem in direct bonding. ~ Removal of sub-micron fine foreign matter.
因此,本揭示的目的在於進行附著於半導體晶片的表面上的微細的異物的去除。 [解決課題之手段]Therefore, the purpose of the present disclosure is to remove the fine foreign matter attached to the surface of the semiconductor wafer. [Means to solve the problem]
本揭示的半導體晶片洗淨方法對貼附於支持材的上表面上的半導體晶片的表面進行洗淨,且所述半導體晶片洗淨方法包括:氣體溶解水洗淨工序,使用將特定氣體溶解於水中而成的氣體溶解水來對半導體晶片的表面進行洗淨;以及擦拭洗淨工序,對半導體晶片的表面進行擦拭。The semiconductor wafer cleaning method of the present disclosure cleans the surface of the semiconductor wafer attached to the upper surface of the support material, and the semiconductor wafer cleaning method includes: a gas-dissolved water cleaning process, using a specific gas to be dissolved in The gas formed in the water dissolves the water to clean the surface of the semiconductor wafer; and the wiping cleaning process wipes the surface of the semiconductor wafer.
本揭示的半導體晶片洗淨方法對貼附於支持材的上表面上的半導體晶片的表面進行洗淨,且所述半導體晶片洗淨方法包括:氣體溶解水洗淨工序,使用將特定氣體溶解於水中而成的氣體溶解水來對半導體晶片的表面進行洗淨;以及擦拭洗淨工序,對半導體晶片的表面進行擦拭,於氣體溶解水洗淨工序之後執行擦拭洗淨工序來去除半導體晶片的表面的異物。The semiconductor wafer cleaning method of the present disclosure cleans the surface of the semiconductor wafer attached to the upper surface of the support material, and the semiconductor wafer cleaning method includes: a gas-dissolved water cleaning process, using a specific gas to be dissolved in The surface of the semiconductor wafer is cleaned by the gas-dissolved water made in water; and the wiping cleaning process is to wipe the surface of the semiconductor wafer, and the wiping cleaning process is performed after the gas-dissolved water cleaning process to remove the surface of the semiconductor wafer Foreign body.
藉由氣體溶解水洗淨工序進行晶圓的切削屑等無機系的微細的異物的去除,藉由擦拭洗淨工序進行有機系的微細的異物的去除,因此可有效地進行半導體晶片的表面的洗淨。The gas-dissolved water cleaning process performs the removal of inorganic fine foreign matter such as wafer chips, and the wiping cleaning process performs the removal of organic fine foreign matter. Therefore, the surface of the semiconductor wafer can be effectively removed. Wash.
於本揭示的半導體晶片洗淨方法中,亦可於氣體溶解水洗淨工序之後執行擦拭洗淨工序,於擦拭洗淨工序之後再次執行氣體溶解水洗淨工序。In the semiconductor wafer cleaning method of the present disclosure, the wiping cleaning process may be performed after the gas-dissolved water cleaning process, and the gas-dissolving water cleaning process may be performed again after the wiping cleaning process.
另外,於本揭示的半導體晶片洗淨方法中,亦可更包括臭氧水洗淨工序,所述臭氧水洗淨工序使用將臭氧溶解於水中而成的臭氧水來對半導體晶片的表面進行洗淨,於氣體溶解水洗淨工序之後執行擦拭洗淨工序,於擦拭洗淨工序之後再次執行氣體溶解水洗淨工序,然後執行臭氧水洗淨工序。In addition, the semiconductor wafer cleaning method of the present disclosure may further include an ozone water cleaning step that uses ozone water obtained by dissolving ozone in water to clean the surface of the semiconductor wafer After the gas-dissolved water cleaning process, the wiping cleaning process is performed, after the wiping cleaning process, the gas-dissolving water cleaning process is performed again, and then the ozone water cleaning process is performed.
另外,於本揭示的半導體晶片洗淨方法中,亦可於最後進行的洗淨工序之後執行對半導體晶片的表面進行乾燥的乾燥工序。In addition, in the semiconductor wafer cleaning method of the present disclosure, the drying process of drying the surface of the semiconductor wafer may be performed after the last cleaning process.
另外,於本揭示的半導體晶片洗淨方法中,氣體溶解水洗淨工序亦可使經超音波振動的氣體溶解水與半導體晶片的表面接觸,而去除半導體晶片的表面的異物。In addition, in the semiconductor wafer cleaning method of the present disclosure, the gas-dissolved water cleaning step can also bring the ultrasonically vibrated gas-dissolved water into contact with the surface of the semiconductor wafer to remove foreign matter on the surface of the semiconductor wafer.
另外,於本揭示半導體晶片的洗淨方法中,特定氣體為包含氫、氧、氮中的至少一個的氣體,氣體溶解水亦可為以大氣壓下的特定氣體的飽和度的合計成為60%~100%的方式將特定氣體溶解而成的水。此處,氣體溶解水亦可為於將特定氣體溶解而成的水中添加鹼而成者。In addition, in the cleaning method of the semiconductor wafer of the present disclosure, the specific gas is a gas containing at least one of hydrogen, oxygen, and nitrogen, and the gas-dissolved water may be a total saturation of the specific gas under atmospheric pressure to 60%~ 100% way to dissolve specific gas into water. Here, the gas-dissolved water may be one obtained by adding an alkali to the water obtained by dissolving a specific gas.
另外,於本揭示的半導體晶片的洗淨方法中,擦拭洗淨工序亦可一面使洗淨液於所述半導體晶片的表面連續地流動,一面進行半導體晶片的表面的擦拭。In addition, in the method for cleaning a semiconductor wafer of the present disclosure, the wiping cleaning step can also wipe the surface of the semiconductor wafer while continuously flowing the cleaning solution on the surface of the semiconductor wafer.
另外,於本揭示的半導體晶片的洗淨方法中,洗淨液可為將二氧化碳氣體溶解於水中而成的碳酸水,洗淨液亦可為於將氫氣溶解於水中而成的氫水中添加了鹼而成的添加氨的氫水。此處,洗淨液的電阻率可為0.05 MΩ・cm~1 MΩ・cm。In addition, in the semiconductor wafer cleaning method of the present disclosure, the cleaning liquid may be carbonated water obtained by dissolving carbon dioxide gas in water, and the cleaning liquid may be hydrogen water obtained by dissolving hydrogen in water. Ammonia-added hydrogen water made from alkali. Here, the resistivity of the cleaning solution can be 0.05 MΩ・cm~1 MΩ・cm.
另外,於本揭示的半導體晶片的洗淨方法中,貼附有半導體晶片的支持材可為薄膜,貼附有半導體晶片的上表面可由黏著層覆蓋。另外,貼附有半導體晶片的薄膜可為切割薄膜。In addition, in the cleaning method of the semiconductor wafer of the present disclosure, the support material attached with the semiconductor wafer may be a thin film, and the upper surface of the attached semiconductor wafer may be covered by an adhesive layer. In addition, the film to which the semiconductor wafer is attached may be a dicing film.
另外,於本揭示的半導體晶片的洗淨方法中,支持材可為矽晶圓、玻璃板或基板。In addition, in the cleaning method of the semiconductor wafer of the present disclosure, the support material can be a silicon wafer, a glass plate or a substrate.
另外,於本揭示的半導體晶片的洗淨方法中,擦拭洗淨工序亦可使用多孔海綿來對半導體晶片的表面進行擦拭,亦可利用包含微纖維的布來對半導體晶片的表面進行擦拭。In addition, in the semiconductor wafer cleaning method of the present disclosure, the wiping cleaning step may also use a porous sponge to wipe the surface of the semiconductor wafer, or use a cloth containing microfibers to wipe the surface of the semiconductor wafer.
本揭示的半導體晶片洗淨裝置對貼附於支持材的上表面上的半導體晶片的表面進行洗淨,且所述半導體晶片洗淨裝置包括:旋轉台,以載置有於上表面上貼附有半導體晶片的支持材的狀態使支持材旋轉;氣體溶解水噴嘴,向半導體晶片的表面噴射將特定氣體溶解於水中而成的氣體溶解水;以及擦拭臂,使安裝於前端的擦拭構件沿著半導體晶片的表面移動,而對半導體晶片的表面進行擦拭,擦拭臂包括使洗淨液於半導體晶片的表面流動的洗淨液噴嘴。The semiconductor wafer cleaning device of the present disclosure cleans the surface of the semiconductor wafer attached to the upper surface of the support material, and the semiconductor wafer cleaning device includes: a rotating table mounted on the upper surface The state of the support material with the semiconductor wafer rotates the support material; the gas-dissolved water nozzle sprays the gas-dissolved water formed by dissolving a specific gas in water onto the surface of the semiconductor wafer; and the wiping arm, which moves the wiping member installed at the tip along The surface of the semiconductor wafer is moved to wipe the surface of the semiconductor wafer, and the wiping arm includes a cleaning liquid nozzle that makes the cleaning liquid flow on the surface of the semiconductor wafer.
藉此,自氣體溶解水噴嘴將氣體溶解水噴射至半導體晶片的表面,而進行晶圓的切削屑等無機系的微細的異物的去除,藉由安裝於擦拭臂的前端的擦拭構件進行附著於半導體晶片的表面上的有機系的微細的異物的去除,因此可有效地進行半導體晶片的表面的洗淨。In this way, the gas-dissolved water is sprayed onto the surface of the semiconductor wafer from the gas-dissolved water nozzle to remove inorganic fine foreign matter such as chips of the wafer. The wiping member attached to the tip of the wiping arm is attached to it The removal of organic fine foreign matter on the surface of the semiconductor wafer makes it possible to efficiently clean the surface of the semiconductor wafer.
於本揭示的半導體晶片洗淨裝置中,可由多孔海綿構成擦拭構件,亦可由使用了微纖維的織物或編織物構成。In the semiconductor wafer cleaning device of the present disclosure, the wiping member may be composed of a porous sponge, or may be composed of a woven or knitted fabric using microfibers.
於本揭示的半導體晶片洗淨裝置中,擦拭臂亦可包括將擦拭構件推壓至半導體晶片的表面上的推壓機構,推壓機構包括進行推壓壓力的調整的推壓力調整機構與進行按壓量的調整的按壓量調整機構中的任一者或兩者。另外。擦拭臂亦可包括使擦拭構件進行自轉或公轉中的任一者或兩者的旋轉的旋轉驅動機構,一面使擦拭構件旋轉一面使洗淨液連續地流動,對半導體晶片的表面進行擦拭洗淨,並且能夠洗掉附著於擦拭構件上的異物。In the semiconductor wafer cleaning device of the present disclosure, the wiping arm may also include a pressing mechanism for pressing the wiping member onto the surface of the semiconductor wafer. The pressing mechanism includes a pressing force adjusting mechanism for adjusting the pressing pressure and pressing Either or both of the pressing amount adjustment mechanisms for the adjustment of the amount. in addition. The wiping arm may also include a rotation drive mechanism that rotates the wiping member either or both of its rotation or revolution. While the wiping member is rotated, the cleaning solution flows continuously to wipe and clean the surface of the semiconductor wafer. , And can wash away foreign matter adhering to the wiping member.
於本揭示的半導體晶片洗淨裝置中,可與將半導體晶片接合於其他半導體晶片或基板上的接合裝置一體地配置,能夠將洗淨後的清潔的半導體晶片供給至接合裝置。另外,亦可與將貼附於切割薄膜上的半導體的晶圓切斷而製成半導體晶片的切割裝置一體地配置,能夠自半導體晶片的表面去除於切斷晶圓時附著於半導體晶片的表面上的無機系及有機系的異物。 [發明的效果]In the semiconductor wafer cleaning device of the present disclosure, it can be arranged integrally with a bonding device for bonding a semiconductor wafer to another semiconductor wafer or a substrate, and the cleaned semiconductor wafer can be supplied to the bonding device. In addition, it can also be integrated with a dicing device that cuts a semiconductor wafer attached to a dicing film into a semiconductor wafer, and can be removed from the surface of the semiconductor wafer and attached to the surface of the semiconductor wafer when the wafer is cut. Inorganic and organic foreign matter on the [Effects of the invention]
本揭示可進行附著於半導體晶片的表面上的微細的異物的去除。The present disclosure can perform the removal of fine foreign matter adhering to the surface of the semiconductor wafer.
以下,參照圖式對實施方式的半導體晶片洗淨裝置100的結構進行說明。如圖1所示,半導體晶片洗淨裝置100包括:旋轉台50、氣體溶解水噴嘴61、擦拭臂70、以及儲水器55。另外,於氣體溶解水噴嘴61安裝有超音波振盪器62。Hereinafter, the structure of the semiconductor wafer
旋轉台50包括旋轉板51、旋轉軸52、以及旋轉驅動部53。旋轉軸52貫通配置於旋轉板51的下側的儲水器55,於上端安裝有旋轉板51,於下端安裝有旋轉驅動部53。旋轉板51為圓形的平板,且於上表面上載置有切割後的晶圓10。The rotating table 50 includes a rotating
如圖2所示,晶圓10為圓板狀的矽制,且貼附於作為支持材的切割薄膜30的上表面上。切割薄膜30的外周緣的上側安裝於環20。晶圓10是自上側利用切割鋸呈格子狀刻畫切口,並分割成多個半導體晶片11。As shown in FIG. 2, the
如圖1所示,於旋轉板51的上表面上,隔著切割薄膜30而載置有將晶圓10切割之後的多個半導體晶片11。旋轉台50藉由旋轉驅動部53使旋轉板51旋轉。藉此,旋轉台50使載置於旋轉板51的上表面上的半導體晶片11旋轉。As shown in FIG. 1, on the upper surface of the
氣體溶解水噴嘴61配置於旋轉台50的上側,並向載置於旋轉台50的上表面上的半導體晶片11的表面噴射氣體溶液水。氣體溶解水噴嘴61的根部側連接於未圖示的氣體溶解水製造裝置。另外,於氣體溶解水噴嘴61的下端附近的外周面上安裝有對氣體溶解水進行超音波振動的超音波振盪器62。另外,氣體溶解水噴嘴61能夠藉由未圖示的XY驅動裝置於沿著半導體晶片11的表面的XY方向上移動。The gas-dissolved
擦拭臂70包括:臂本體71、擦拭構件保持部73、洗淨液噴嘴72、旋轉驅動部75、推壓機構76、以及XY驅動部77。The wiping
臂本體71能夠藉由XY驅動部77於沿著半導體晶片11的表面的XY方向上移動。於臂本體71的前端的下側,於下端安裝有用來安裝擦拭構件74的擦拭構件保持部73。另外,於臂本體71的前端的上側安裝有旋轉驅動部75及推壓機構76,所述旋轉驅動部75包括對擦拭構件74進行旋轉驅動的旋轉驅動機構,所述推壓機構76沿上下方向對擦拭構件保持部73進行驅動,而將擦拭構件74推壓至半導體晶片11的表面上。另外,於臂本體71的前端安裝有洗淨液噴嘴72,所述洗淨液噴嘴72的根部側連接於未圖示的洗淨液槽,而使洗淨液自下端於半導體晶片11的表面流動。The
擦拭構件74將附著於半導體晶片11的表面上的有機物的微細的異物擦拭去除,且例如可包括多孔海綿,亦可包括包含微纖維的布或使用了微纖維的織物或編織物。The wiping
推壓機構76包括進行將擦拭構件74向半導體晶片11的表面的推壓壓力的調整的按壓力調整機構與進行推壓量的調整的按壓量調整機構中的任一者或兩者。The
氣體溶解水是將特定氣體溶解於水中而成的水。此處,所謂特定氣體,是包含氫、氧、氮中的至少一個的氣體,氣體溶解水是以大氣壓下的特定氣體的飽和度的合計成為60%~100%的方式將特定氣體溶解而成的水。具體而言,氣體溶解水可為使氫溶解於水中而成的氫水。另外,氣體溶解水可為添加了鹼成分而成者,例如,亦可為於氫水中添加了氨而成的添加氨的氫水。Gas-dissolved water is water obtained by dissolving a specific gas in water. Here, the so-called specific gas is a gas containing at least one of hydrogen, oxygen, and nitrogen. The gas-dissolved water is obtained by dissolving the specific gas so that the total saturation of the specific gas under atmospheric pressure becomes 60% to 100%. Of water. Specifically, the gas-dissolved water may be hydrogen water obtained by dissolving hydrogen in water. In addition, the gas-dissolved water may be an alkali component added, and for example, it may be ammonia-added hydrogen water obtained by adding ammonia to hydrogen water.
洗淨液可為將二氧化碳氣體溶解於水中而成的碳酸水,亦可為於將氫氣溶解於水中而成的氫水中添加了鹼而成的添加氨的氫水。此處,洗淨液亦可為電阻率為0.05 MΩ・cm~1 MΩ・cm者。The cleaning liquid may be carbonated water obtained by dissolving carbon dioxide gas in water, or may be hydrogen water obtained by adding alkali to hydrogen water obtained by dissolving hydrogen gas in water and ammonia-added hydrogen water. Here, the cleaning liquid may have a resistivity of 0.05 MΩ・cm to 1 MΩ・cm.
接著,參照圖3~圖7,使用以如上方式構成的半導體晶片洗淨裝置100來對半導體晶片11的表面的洗淨工序及半導體晶片洗淨方法進行說明。Next, referring to FIGS. 3 to 7, the cleaning process of the surface of the
如圖3的步驟S101所示,於晶圓製造工序中所製造的晶圓10如圖4所示般貼附於切割薄膜30的上表面上。切割薄膜30包括基材31及覆蓋基材31的上表面的黏著層32,於黏著層32的上表面上貼附有晶圓10。As shown in step S101 of FIG. 3, the
圖3的步驟S102所示的切割工序是由切割裝置執行。所謂切割裝置,是將貼附於切割薄膜30的半導體的晶圓10切斷而製成半導體晶片11的裝置。切割裝置如圖5所示般於晶圓10上刻畫切口14而將晶圓10切斷成多個半導體晶片11。此時,切割薄膜30的黏著層32亦與晶圓10一起被切斷。於切割工序中,當於晶圓10上刻畫切口14時,產生如矽的切屑等無機系的異物15及黏著層32的切屑般的有機系的異物16。該些異物15、16中的較大者是於圖3的步驟S103所示的切割後洗淨工序中被去除。但是,幾微米~亞微米級的微細的異物15、異物16未被去除,如圖5所示,無機系的微細的異物15處於附著於半導體晶片11的表面上或與切口14面對面的半導體晶片11的側面上的狀態。另外,有機系的微細的異物16處於附著於半導體晶片11的上表面上的狀態。The cutting process shown in step S102 of FIG. 3 is executed by the cutting device. The dicing device is a device that cuts the
接著,如圖3的步驟S201所示,執行氣體溶解水洗淨工序。氣體溶解水洗淨工序是自氣體溶解水噴嘴61將氣體溶解水噴射至半導體晶片11的表面來對半導體晶片11的表面進行洗淨的工序。氣體溶解水於通過氣體溶解水噴嘴61時被超音波振盪器62超音波振動,而成為包含微細的泡者。該微細的泡於半導體晶片11的表面或切口14中發泡,利用其衝擊來去除半導體晶片11的表面的微細的無機系的異物15。於使用氫水作為氣體溶解水的情況下,氫水不會腐蝕有機物,因此可於不損傷作為有機物的切割薄膜30的基材31的情況下去除無機系的異物15。另外,由於藉由氫水而表面的氧化得到抑制,因此可將半導體晶片11的表面精加工成未氧化的表面。進而,當使用添加鹼的氫水時,可抑制經去除的異物15再次附著於半導體晶片11的表面上,因此可進一步提高洗淨後的半導體晶片11的表面的清潔度。Next, as shown in step S201 of FIG. 3, a gas-dissolved water washing process is performed. The gas-dissolved water cleaning step is a step in which gas-dissolved water is sprayed onto the surface of the
另一方面,由於氫水不腐蝕有機物,因此無法去除如附著於半導體晶片11的上表面上的黏著層32的切屑般的有機系的微細的異物16,即使氣體溶解水洗淨工序結束,如圖6所示,於半導體晶片11的上表面上,亦附著有機系的微細的異物。因此,進入圖3的步驟S202,執行擦拭洗淨工序。On the other hand, because hydrogen water does not corrode organic matter, it is impossible to remove organic fine
擦拭洗淨工序是以下工序:一面自洗淨液噴嘴72使洗淨液於半導體晶片11的表面連續地流動,一面藉由旋轉驅動部75使安裝於擦拭臂70的前端的擦拭構件保持部73旋轉,藉由推壓機構76將安裝於擦拭構件保持部73的擦拭構件74推壓至半導體晶片11的表面上,而對附著於半導體晶片11的表面上的有機系的異物16進行擦拭。The wiping cleaning process is a process in which the cleaning liquid is continuously flowed from the cleaning
於擦拭洗淨工序中,亦可使擦拭構件保持部73自轉。再者,藉由旋轉台50的旋轉,擦拭構件保持部73繞旋轉軸52公轉。另外,亦可藉由XY驅動部77使臂本體71於XY方向上移動。另外,亦可藉由旋轉驅動部75使擦拭構件保持部73繞旋轉軸52公轉。另外,於擦拭洗淨工序時,可藉由推壓機構76中的按壓力調整機構來進行將擦拭構件74向半導體晶片11的表面的推壓壓力的調整,亦可藉由推壓機構76中的按壓量調整機構來調整擦拭構件74向半導體晶片11的推壓量。In the wiping and washing process, the wiping
藉由擦拭洗淨工序可有效地自半導體晶片11的表面去除有機系的異物16。此處,作為洗淨液,可使用純水、氫水、添加鹼的氫水、碳酸水等。於使用氫水、添加鹼的氫水、碳酸水的情況下,可抑制靜電的產生。The wiping cleaning process can effectively remove organic
然後,當擦拭洗淨工序結束後,有機系的微細的異物16被自半導體晶片11的表面去除,半導體晶片11的表面成為如圖8所示般的清潔的表面。然後,如圖3的步驟S301所示,具有清潔的表面的半導體晶片11於接合裝置中接合於另一半導體晶片11或者基板上。再者,亦可設為於圖3的步驟S202所示的擦拭洗淨工序之後執行乾燥工序,並使半導體晶片11乾燥後進行接合。再者,接合裝置例如是倒裝晶片接合裝置,但只要是晶粒接合裝置等將半導體晶片11接合於被接合物的裝置,則可使用。Then, after the wiping cleaning step is completed, the organic fine
如以上所說明般,實施方式的半導體晶片洗淨裝置100可進行附著於半導體晶片11的表面上的微細的異物15、異物16的去除。As described above, the semiconductor
另一方面,如圖8所示,於現有技術的洗淨方法中,即使於洗淨後,於半導體晶片11的表面上亦殘留有幾微米~亞微米級的無機系的異物15或有機系的異物16。因此,於自切割薄膜30剝離半導體晶片11時,附著於半導體晶片11的表面上的異物15如箭頭91所示,落下至鄰接的半導體晶片11的表面上。當將半導體晶片11直接接合於落下至半導體晶片11的表面上的異物15上時,有時由於異物15而無法進行良好的接合。On the other hand, as shown in FIG. 8, in the conventional cleaning method, even after cleaning, there are still a few micrometers to submicron level inorganic or organic
但是,根據實施方式的半導體晶片洗淨裝置100,由於可去除附著於半導體晶片11的表面上的微細的異物15、異物16,因此可提高直接接合時的接合品質。However, according to the semiconductor
於以上說明的實施方式的半導體晶片洗淨裝置100中,對進行貼附於切割薄膜30上的半導體晶片11的表面的洗淨進行了說明,但不限於此,例如,亦可應用於以下情況:於切割洗淨工序之後,自經切割的多個半導體晶片11中僅拾取良品的半導體晶片11並經由黏著劑貼附於玻璃板上,貼附有多個半導體晶片11並將玻璃板載置於旋轉台50上來進行半導體晶片11的表面的洗淨。於此情況下,玻璃板構成支持材。另外,亦可設為並非玻璃板,而是於矽晶圓或者基板上貼附半導體晶片11,將矽晶圓或者基板載置於旋轉台50來進行半導體晶片11的洗淨。於此情況下,矽晶圓、基板構成支持材。In the semiconductor
接著,參照圖9至圖11對實施方式的半導體晶片洗淨裝置100的另一洗淨工序進行說明。對於與之前參照圖3所說明的洗淨工序相同的工序,標註相同的符號並省略說明。Next, another cleaning process of the semiconductor
圖9所示的洗淨工序如圖9的步驟S201所示於切割工序之後實施氣體溶解水洗淨工序,然後,於步驟S202中執行擦拭洗淨工序,然後,於圖9的步驟S203中再次執行氣體溶解水洗淨工序。藉此,可更有效地去除無機系的微細的異物15。The cleaning process shown in FIG. 9 is shown in step S201 of FIG. 9. After the cutting process, a gas-dissolved water cleaning process is performed. Then, the wiping cleaning process is performed in step S202, and then again in step S203 of FIG. Perform gas-dissolved water cleaning process. Thereby, the inorganic fine
圖10所示的洗淨工序如圖9的洗淨工序般,於步驟S202中執行擦拭洗淨工序之後,於S203中再次執行氣體溶解水洗淨工序,然後,進而於步驟S204中執行臭氧水洗淨工序。The cleaning process shown in FIG. 10 is similar to the cleaning process of FIG. 9. After the wiping cleaning process is performed in step S202, the gas-dissolved water cleaning process is performed again in S203, and then ozone water is performed in step S204. Washing process.
臭氧水洗淨工序自氣體溶解水噴嘴61噴出將臭氧溶解於水中而成的臭氧水來對半導體晶片11的表面進行洗淨。藉由追加臭氧水洗淨工序,可更有效地去除有機系的微細的異物16。In the ozone water cleaning step, ozone water obtained by dissolving ozone in water is sprayed from the gas-dissolved
圖11所示的洗淨工序不進行圖3的步驟S103所示的切割後洗淨工序,僅進行氣體溶解水洗淨工序及擦拭洗淨工序。藉此,可縮短洗淨工序。The cleaning process shown in FIG. 11 does not perform the post-cut cleaning process shown in step S103 of FIG. 3, and only performs the gas-dissolved water cleaning process and the wiping cleaning process. Thereby, the washing process can be shortened.
再者,於參照圖9至圖11所說明的洗淨工序中,亦可分別於作為最後的洗淨工序的氣體溶解水洗淨工序、臭氧水洗淨工序、擦拭洗淨工序之後實施乾燥工序,使半導體晶片11的表面乾燥。Furthermore, in the cleaning process described with reference to FIGS. 9 to 11, the drying process may be performed after the gas-dissolved water cleaning process, the ozone water cleaning process, and the wiping cleaning process as the final cleaning process. , The surface of the
亦可構成為:將實施方式的半導體晶片洗淨裝置100與接合裝置一體地配置,並將洗淨後的清潔的半導體晶片11供給至接合裝置。藉此,可將清潔度更高的半導體晶片11供給至接合裝置。It may be configured such that the semiconductor
另外,亦可將實施方式的半導體晶片洗淨裝置100與切割裝置一體地配置。例如,代替切割裝置的切割洗淨裝置,而將半導體晶片洗淨裝置100一體地組裝於切割裝置中,可自半導體晶片11的表面去除於切斷晶圓10時附著於半導體晶片11的表面上的無機系及有機系的微細的異物15、異物16。In addition, the semiconductor
10:晶圓
11:半導體晶片
14:切口
15:無機系的異物
16:有機系的異物
20:環
30:切割薄膜
31:基材
32:黏著層
50:旋轉台
51:旋轉板
52:旋轉軸
53、75:旋轉驅動部
55:儲水器
61:氣體溶解水噴嘴
62:超音波振盪器
70:擦拭臂
71:臂本體
72:洗淨液噴嘴
73:擦拭構件保持部
74:擦拭構件
76:推壓機構
77:XY驅動部
91:箭頭
100:半導體晶片洗淨裝置
S101、S102、S103、S201、S202、S203、S204、S301:步驟10: Wafer
11: Semiconductor wafer
14: incision
15: Inorganic foreign matter
16: Organic foreign matter
20: ring
30: cutting film
31: Substrate
32: Adhesive layer
50: Rotating table
51: Rotating plate
52:
圖1是表示實施方式的半導體晶片洗淨裝置的結構的側面圖。 圖2是表示切割後的晶圓與半導體晶片的平面圖。 圖3是表示圖1所示的半導體晶片洗淨裝置中的半導體晶片的洗淨工序的流程圖。 圖4是切割前的晶圓的剖面圖。 圖5是表示切割後的晶圓與半導體晶片的剖面圖。 圖6是表示氣體溶解水洗淨工序結束的狀態的半導體晶片的剖面圖。 圖7是擦拭洗淨工序結束的狀態的半導體晶片的剖面圖。 圖8是表示拾取利用現有技術的洗淨方法進行洗淨之後的半導體晶片的狀態的剖面圖。 圖9是表示圖1所示的半導體晶片洗淨裝置中的半導體晶片的另一洗淨工序的流程圖。 圖10是表示圖1所示的半導體晶片洗淨裝置中的半導體晶片的另一洗淨工序的流程圖。 圖11是表示圖1所示的半導體晶片洗淨裝置中的半導體晶片的另一洗淨工序的流程圖。FIG. 1 is a side view showing the structure of a semiconductor wafer cleaning apparatus according to an embodiment. Fig. 2 is a plan view showing a wafer and a semiconductor wafer after dicing. 3 is a flowchart showing a cleaning process of a semiconductor wafer in the semiconductor wafer cleaning apparatus shown in FIG. 1. Fig. 4 is a cross-sectional view of the wafer before dicing. Fig. 5 is a cross-sectional view showing a wafer and a semiconductor wafer after dicing. Fig. 6 is a cross-sectional view of the semiconductor wafer showing a state where the gas-dissolved water washing step is completed. Fig. 7 is a cross-sectional view of the semiconductor wafer in a state where the wiping cleaning step is completed. 8 is a cross-sectional view showing a state of picking up a semiconductor wafer after cleaning by a conventional cleaning method. FIG. 9 is a flowchart showing another cleaning process of the semiconductor wafer in the semiconductor wafer cleaning apparatus shown in FIG. 1. FIG. 10 is a flowchart showing another cleaning process of the semiconductor wafer in the semiconductor wafer cleaning apparatus shown in FIG. 1. FIG. 11 is a flowchart showing another cleaning process of the semiconductor wafer in the semiconductor wafer cleaning apparatus shown in FIG. 1.
S101、S102、S103、S201、S202、S301:步驟 S101, S102, S103, S201, S202, S301: steps
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