CN103854966A - 平坦化处理方法 - Google Patents

平坦化处理方法 Download PDF

Info

Publication number
CN103854966A
CN103854966A CN201210505860.1A CN201210505860A CN103854966A CN 103854966 A CN103854966 A CN 103854966A CN 201210505860 A CN201210505860 A CN 201210505860A CN 103854966 A CN103854966 A CN 103854966A
Authority
CN
China
Prior art keywords
layer
sputter
material layer
masking
sacrificial gate
Prior art date
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.)
Granted
Application number
CN201210505860.1A
Other languages
English (en)
Other versions
CN103854966B (zh
Inventor
朱慧珑
罗军
李春龙
邓坚
赵超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Microelectronics of CAS
Original Assignee
Institute of Microelectronics of CAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Institute of Microelectronics of CAS filed Critical Institute of Microelectronics of CAS
Priority to CN201210505860.1A priority Critical patent/CN103854966B/zh
Priority to PCT/CN2012/087020 priority patent/WO2014082357A1/zh
Priority to US14/647,393 priority patent/US9406549B2/en
Publication of CN103854966A publication Critical patent/CN103854966A/zh
Application granted granted Critical
Publication of CN103854966B publication Critical patent/CN103854966B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture 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
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/76Making of isolation regions between components
    • H01L21/762Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
    • H01L21/76224Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
    • H01L21/76229Concurrent filling of a plurality of trenches having a different trench shape or dimension, e.g. rectangular and V-shaped trenches, wide and narrow trenches, shallow and deep trenches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture 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
    • H01L21/77Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
    • H01L21/78Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
    • H01L21/82Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
    • H01L21/822Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
    • H01L21/8232Field-effect technology
    • H01L21/8234MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/26Bombardment with radiation
    • H01L21/263Bombardment with radiation with high-energy radiation
    • H01L21/265Bombardment with radiation with high-energy radiation producing ion implantation
    • H01L21/26506Bombardment with radiation with high-energy radiation producing ion implantation in group IV semiconductors
    • H01L21/26513Bombardment with radiation with high-energy radiation producing ion implantation in group IV semiconductors of electrically active species
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/302Treatment 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
    • H01L21/306Chemical or electrical treatment, e.g. electrolytic etching
    • H01L21/308Chemical or electrical treatment, e.g. electrolytic etching using masks
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/31Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
    • H01L21/3105After-treatment
    • H01L21/31051Planarisation of the insulating layers
    • H01L21/31053Planarisation of the insulating layers involving a dielectric removal step
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/31Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
    • H01L21/3105After-treatment
    • H01L21/31051Planarisation of the insulating layers
    • H01L21/31053Planarisation of the insulating layers involving a dielectric removal step
    • H01L21/31055Planarisation of the insulating layers involving a dielectric removal step the removal being a chemical etching step, e.g. dry etching
    • H01L21/31056Planarisation of the insulating layers involving a dielectric removal step the removal being a chemical etching step, e.g. dry etching the removal being a selective chemical etching step, e.g. selective dry etching through a mask
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/31Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
    • H01L21/3105After-treatment
    • H01L21/311Etching the insulating layers by chemical or physical means
    • H01L21/31105Etching inorganic layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/31Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
    • H01L21/3205Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
    • H01L21/321After treatment
    • H01L21/32115Planarisation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/31Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
    • H01L21/3205Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
    • H01L21/321After treatment
    • H01L21/3213Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
    • H01L21/32131Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by physical means only
    • H01L21/32132Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by physical means only of silicon-containing layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture 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
    • H01L21/77Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
    • H01L21/78Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
    • H01L21/82Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
    • H01L21/822Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
    • H01L21/8232Field-effect technology
    • H01L21/8234MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
    • H01L21/823481MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type isolation region manufacturing related aspects, e.g. to avoid interaction of isolation region with adjacent structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
    • H01L29/02Semiconductor bodies ; Multistep manufacturing processes therefor
    • H01L29/06Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
    • H01L29/10Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
    • H01L29/107Substrate region of field-effect devices
    • H01L29/1075Substrate region of field-effect devices of field-effect transistors
    • H01L29/1079Substrate region of field-effect devices of field-effect transistors with insulated gate
    • H01L29/1083Substrate region of field-effect devices of field-effect transistors with insulated gate with an inactive supplementary region, e.g. for preventing punch-through, improving capacity effect or leakage current
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/66007Multistep manufacturing processes
    • H01L29/66075Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
    • H01L29/66227Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
    • H01L29/66409Unipolar field-effect transistors
    • H01L29/66477Unipolar field-effect transistors with an insulated gate, i.e. MISFET
    • H01L29/66787Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel
    • H01L29/66795Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/66007Multistep manufacturing processes
    • H01L29/66075Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
    • H01L29/66227Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
    • H01L29/66409Unipolar field-effect transistors
    • H01L29/66477Unipolar field-effect transistors with an insulated gate, i.e. MISFET
    • H01L29/66787Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel
    • H01L29/66795Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
    • H01L29/6681Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET using dummy structures having essentially the same shape as the semiconductor body, e.g. to provide stability
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/31Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
    • H01L21/3105After-treatment
    • H01L21/31051Planarisation of the insulating layers
    • H01L21/31053Planarisation of the insulating layers involving a dielectric removal step
    • H01L21/31055Planarisation of the insulating layers involving a dielectric removal step the removal being a chemical etching step, e.g. dry etching

Abstract

本申请公开了一种平坦化处理方法。一示例方法可以包括:对材料层进行第一溅射,在进行第一溅射时,以第一掩蔽层遮蔽材料层中溅射的负载条件相对较低的区域;去除第一掩蔽层;以及对材料层进行第二溅射,以使材料层平坦。

Description

平坦化处理方法
技术领域
本公开涉及半导体领域,更具体地,涉及一种平坦化处理方法。
背景技术
在半导体工艺中,经常用到平坦化工艺,例如化学机械抛光(CMP),以获得相对平坦的表面。然而,在通过CMP对材料层进行平坦化的情况下,如果需要研磨掉相对较厚的部分,则难以控制CMP后材料层的表面平坦度,例如控制到几个纳米之内。
另一方面,如果要对覆盖特征、特别是非均匀分布特征的材料层进行平坦化,那么材料层由于特征的存在而可能出现非均匀分布的凹凸起伏,因此可能导致平坦化不能一致地执行。
发明内容
本公开的目的至少部分地在于提供一种平坦化处理方法。
根据本公开的一个方面,提供了一种对衬底上形成的材料层进行平坦化的方法,包括:对材料层进行第一溅射,在进行第一溅射时,以第一掩蔽层遮蔽材料层中溅射的负载条件相对较低的区域;去除第一掩蔽层;以及对材料层进行第二溅射,以使材料层平坦。
根据本公开的另一方面,提供了一种对衬底上形成的材料层进行平坦化的方法,包括:对材料层进行第一溅射,在进行第一溅射时,以第一掩蔽层遮蔽材料层中溅射的负载条件相对较高的区域,其中进行第一溅射,以使材料层中未被第一掩蔽层遮蔽的部分平坦;去除第一掩蔽层;在材料层的所述部分上形成第二掩蔽层,其中第二掩蔽层的位置与第一掩蔽层的位置不交迭;以及对材料层进行第二溅射,以使材料层平坦。
附图说明
通过以下参照附图对本公开实施例的描述,本公开的上述以及其他目的、特征和优点将更为清楚,在附图中:
图1-19示出了制造半导体器件的示例流程,其中利用了根据本公开实施例的平坦化处理方法;
图4a示出了根据本公开另一实施例的图4所示操作的替代操作;
图5a示出了根据本公开另一实施例的图5所示操作的替代操作;
图11a示出了根据本公开另一实施例的图11所示操作的替代操作;以及
图12a示出了根据本公开另一实施例的图12所示操作的替代操作。
具体实施方式
以下,将参照附图来描述本公开的实施例。但是应该理解,这些描述只是示例性的,而并非要限制本公开的范围。此外,在以下说明中,省略了对公知结构和技术的描述,以避免不必要地混淆本公开的概念。
在附图中示出了根据本公开实施例的各种结构示意图。这些图并非是按比例绘制的,其中为了清楚表达的目的,放大了某些细节,并且可能省略了某些细节。图中所示出的各种区域、层的形状以及它们之间的相对大小、位置关系仅是示例性的,实际中可能由于制造公差或技术限制而有所偏差,并且本领域技术人员根据实际所需可以另外设计具有不同形状、大小、相对位置的区域/层。
在本公开的上下文中,当将一层/元件称作位于另一层/元件“上”时,该层/元件可以直接位于该另一层/元件上,或者它们之间可以存在居中层/元件。另外,如果在一种朝向中一层/元件位于另一层/元件“上”,那么当调转朝向时,该层/元件可以位于该另一层/元件“下”。
根据本公开的示例,可以通过溅射(sputtering),例如Ar或N等离子体溅射,来对材料层进行平坦化处理。通过这种溅射平坦化处理,而非常规的CMP平坦化处理,可以实现更加平坦的材料层表面。这种材料层可以包括半导体制造工艺中使用的多种材料层,例如,包括但不限于绝缘体材料层、半导体材料层和导电材料层。
另外,在进行溅射时,可能存在负载效应(loading effect)。所谓“负载相应”,是指溅射所针对的材料层上存在的图案以及图案的密度(或者说,材料层的形貌)等将会影响溅射后材料层的厚度和/或形貌等。因此,为了获得较为平坦的表面,优选地在溅射时考虑负载效应。
例如,如果材料层由于之下存在(凸出的)特征而存在凸起,那么相对于其他没有凸起的部分而言,存在凸起的部分需要经受“更多”的溅射,才能与其他部分保持平坦。在此,所谓“更多”的溅射,例如是指在相同的溅射参数(如,溅射功率和/或气压)情况下,需要进行更长时间的溅射;或者,在相同溅射时间的情况下,溅射强度的更大(如,溅射功率和/或气压更大);等等。也就是说,对于溅射而言,这种凸起对应的负载条件(loading condition)更大。
另一方面,如果材料层由于之下存在(凹入的)特征而存在凹陷,那么相对于其他没有凹陷的部分而言,存在凹陷的部分需要经受“更少”的溅射,才能与其他部分保持平坦。也就是说,对于溅射而言,这种凹陷对应的负载条件更小。
另外,如果存在多个非均匀分布的特征,那么材料层可能由于特征而具有非均匀分布的凸起和/或凹陷,因此导致负载条件在衬底上发生变化。例如,对于凸起而言,其分布密度较高区域的负载条件要高于分布密度较低区域的负载条件;而对于凹陷而言,其分布密度较高区域的负载条件要低于分布密度较低区域的负载条件。非均匀分布的负载条件可能不利于溅射均匀地进行。
根据本公开的示例,在通过溅射对材料层进行平坦化的处理中,可以结合光刻,以便能够实现选择性平坦化。例如,在进行溅射之前,可以通过掩蔽层来遮蔽材料层中溅射的负载条件相对较低的区域,然后对露出的材料层部分(负载条件相对较高)进行溅射(以下称作“第一溅射”)。通过第一溅射,可以降低露出的材料层部分的负载条件,并使之接近或大致等于被遮蔽的材料层部分的负载条件。之后,可以去除第一掩蔽层,并对整个材料层(由于第一溅射,其负载条件的均匀性得以改进)进行溅射(以下称作“第二溅射”)。这样,第二溅射可以在衬底上大致均匀地进行,从而有助于获得平坦的表面。
上述特征可以包括能够在衬底上形成的各种特征,例如,包括但不限于衬底上的凸出特征如栅、鳍等,和/或衬底上的凹入特征如替代栅工艺中去除牺牲栅而形成的栅槽等。
本公开可以各种形式呈现,以下将描述其应用于鳍式场效应晶体管(FinFET)的一些示例。
如图1所示,提供衬底1000。该衬底1000可以是各种形式的衬底,例如但不限于体半导体材料衬底如体Si衬底、绝缘体上半导体(SOI)衬底、SiGe衬底等。在以下的描述中,为方便说明,以体Si衬底为例进行描述。
可以对衬底1000进行构图,以形成鳍。例如,这可以如下进行。具体地,在衬底1000上按设计形成构图的光刻胶(未示出),然后以构图的光刻胶为掩模,刻蚀例如反应离子刻蚀(RIE)衬底1000,从而形成鳍1002。之后,可以去除光刻胶。在图1所示的示例中,根据设计需要,鳍1002在区域100-1中的分布密度较高,而在区域100-2中的分布密度较低。
这里需要指出的是,通过刻蚀所形成的(鳍之间的)沟槽的形状不一定是图1中所示的规则矩形形状,可以是例如从上到下逐渐变小的锥台形。另外,所形成的鳍的位置和数目不限于图1所示的示例。
另外,鳍不限于通过直接对衬底进行构图来形成。例如,可以在衬底上外延生长另外的半导体层,对该另外的半导体层进行构图来形成鳍。如果该另外的半导体层与衬底之间具有足够的刻蚀选择性,则在对鳍进行构图时,可以使构图基本上停止于衬底,从而实现对鳍高度的较精确控制。
在通过上述处理形成鳍之后,可以在衬底上形成隔离层。
具体地,如图1所示,可以在衬底上例如通过淀积形成电介质层1004,以覆盖形成的鳍1002。例如,电介质层1004可以包括氧化物(如,氧化硅)。由于鳍1002的存在,电介质层1004上存在凸起B。相应地,凸起B在区域100-1中的分布密度较高,而在区域100-2中的分布密度较低。为此,需要对电介质层1004进行平坦化。根据本公开的优选实施例,通过两次溅射来进行平坦化处理。
具体地,如图2所示,在电介层1004上形成构图的掩蔽层1006,以遮蔽凸起B密度较低的区域100-2。例如,掩蔽层1006可以包括光刻胶,其可以通过掩模进行曝光、显影等操作来构图。例如,可以根据用来形成鳍1002的掩模(确定鳍的位置和形状等,并因此部分地确定鳍1002的分布密度),来设计用来对掩蔽层1006进行曝光的掩模。
然后,如图3所示,可以对露出的电介质层1004部分进行溅射(“第一溅射”)。例如,溅射可以使用等离子体,如Ar或N等离子体。在此,例如可以根据等离子体溅射对电介质层1004的切削速度,控制溅射参数例如溅射功率和气压等,来确定进行等离子体溅射的时间,使得等离子体溅射能够执行一定的时间段,以降低区域100-1中的负载条件,使之接近或大致等于区域100-2中的负载条件。例如,可以根据区域100-1、100-2中的特征密度差异以及溅射参数,来确定第一溅射的时间。之后,可以去除掩蔽层1006。
这样,就得到了图4所示的结构。如图4所示,在区域100-1,凸起B已经降低了一定的高度,从而该区域中的负载条件降低,并因此可以接近乃至大致等于区域100-2中的负载条件,这有利于随后的第二溅射均匀地进行。
接下来,如图5所示,可以对整个电介质层1004进行溅射(“第二溅射”),来对电介质层1004进行平坦化处理。同样,溅射可以使用等离子体,如Ar或N等离子体。在此,例如可以根据等离子体溅射对电介质层1004的切削速度,控制溅射参数例如溅射功率和气压等,来确定进行等离子体溅射的时间,使得等离子体溅射能够执行一定的时间段,充分平滑电介质层1004的表面。由于如上所述,通过第一溅射衬底上负载条件的均匀性得以改善,因此溅射可以大致均匀地执行,并因此可以实现更加平坦的表面。
图6示出了通过第二溅射进行平坦化之后的结果。尽管在图6中示出了微观上的起伏,但是事实上电介质层1004的顶面具有充分的平坦度,其起伏可以控制在例如几个纳米之内。在图6所示的示例中,等离子体溅射可以在到达鳍1002的顶面之前结束,以避免对鳍1002造成过多的损伤。根据本公开的另一实施例,还可以根据需要,对通过溅射平坦化后的电介质层1004进行少许CMP。
在电介质层1004的表面通过等离子体溅射而变得充分平滑之后,如图7所示,可以对电介质层1004进行回蚀(例如,RIE),以露出鳍1002的一部分,该露出的部分随后可以用作最终器件的真正鳍。剩余的电介质层1004构成隔离层。由于回蚀之前电介质层1004的表面通过溅射而变得平滑,所以回蚀之后隔离层1004的表面在衬底上基本上保持一致。
为改善器件性能,根据本公开的一示例,还可以如图7中的箭头所示,通过注入来形成穿通阻挡部(参见图8所示的1008)。例如,对于n型器件而言,可以注入p型杂质,如B、BF2或In;对于p型器件,可以注入n型杂质,如As或P。离子注入可以垂直于衬底表面。控制离子注入的参数,使得穿通阻挡部形成于鳍位于隔离层1004表面之下的部分中,并且具有期望的掺杂浓度。应当注意,由于鳍的形状因子,一部分掺杂剂(离子或元素)可能从鳍的露出部分散射出去,从而有利于在深度方向上形成陡峭的掺杂分布。可以进行退火,以激活注入的杂质。这种穿通阻挡部有助于减小源漏泄漏。
随后,可以在隔离层1004上形成横跨鳍的栅堆叠。例如,这可以如下进行。具体地,如图9所示,例如通过淀积,形成栅介质层1010。例如,栅介质层1010可以包括氧化物,厚度为约0.8-1.5nm。在图7所示的示例中,仅示出了“∏”形的栅介质层1010。但是,栅介质层1010也可以包括在隔离层1004的顶面上延伸的部分。然后,例如通过淀积,形成栅导体层1012。例如,栅导体层1012可以包括多晶硅,厚度为约30-200nm。栅导体层1012可以填充鳍之间的间隙。由于鳍的存在,栅导体层1012上也存在凸起。相应地,凸起在区域100-1中的分布密度较高,而在区域100-2中的分布密度较低。
在此,同样可以利用根据本公开的技术来对栅导体层1012进行平坦化。具体地,如图10所示,在栅导体层1012上形成构图的掩蔽层1014,以遮蔽凸起密度较低的区域100-2。该掩蔽层1014例如可以与上述掩蔽层1006类似地形成(参见以上结合图2的说明)。然后,可以对露出的栅导体层1012部分进行溅射(“第一溅射”)。例如,溅射可以使用等离子体,如Ar或N等离子体。在此,例如可以根据等离子体溅射对栅导体层1012的切削速度,控制溅射参数例如溅射功率和气压等,来确定进行等离子体溅射的时间,使得等离子体溅射能够执行一定的时间段,以降低区域100-1中的负载条件,使之接近或大致等于区域100-2中的负载条件。例如,可以根据区域100-1、100-2中的特征密度差异以及溅射参数,来确定第一溅射的时间。之后,可以去除掩蔽层1014。
这样,就得到了图11所示的结构。如图11所示,在区域100-1,凸起已经降低了一定的高度,从而该区域中的负载条件降低,并因此可以接近乃至大致等于区域100-2中的负载条件,这有利于随后的第二溅射均匀地进行。
接下来,如图12所示,可以对整个栅导体层1012进行溅射(“第二溅射”),来对栅导体层1012进行平坦化处理。同样,溅射可以使用等离子体,如Ar或N等离子体。在此,例如可以根据等离子体溅射对栅导体层1012的切削速度,控制溅射参数例如溅射功率和气压等,来确定进行等离子体溅射的时间,使得等离子体溅射能够执行一定的时间段,充分平滑栅导体层1012的表面。由于如上所述,通过第一溅射衬底上负载条件的均匀性得以改善,因此溅射可以大致均匀地执行,并因此可以实现更加平坦的表面。
图13示出了通过第二溅射进行平坦化之后的结果。尽管在图13中示出了微观上的起伏,但是事实上栅导体层1012的顶面具有充分的平坦度,其起伏可以控制在例如几个纳米之内。根据本公开的另一实施例,还可以根据需要,对通过溅射平坦化后的栅导体层1012进行少许CMP。
之后,如图14(图14是顶视图,以上图1-13是沿AA′线的截面图)所示,对栅导体层1012进行构图,以形成栅堆叠。在图14的示例中,栅导体层1012被构图为与鳍相交的条形。根据另一实施例,还可以构图后的栅导体层1012为掩模,进一步对栅介质层1010进行构图。
在形成构图的栅导体之后,例如可以栅导体为掩模,进行晕圈(halo)注入和延伸区(extension)注入。
接下来,如图15(图15(b)示出了沿图15(a)中BB′线的截面图)所示,可以在栅导体层1012的侧壁上形成侧墙1014。例如,可以通过淀积形成厚度约为5-20nm的氮化物(如,氮化硅),然后对氮化物进行RIE,来形成侧墙1014。本领域技术人员知道多种方式来形成这种侧墙,在此不再赘述。在鳍之间的沟槽为从上到下逐渐变小的锥台形时(由于刻蚀的特性,通常为这样的情况),侧墙1014基本上不会形成于鳍的侧壁上。
在形成侧墙之后,可以栅导体及侧墙为掩模,进行源/漏(S/D)注入。随后,可以通过退火,激活注入的离子,以形成源/漏区,得到FinFET。
在上述实施例中,在形成鳍之后,直接形成了栅堆叠。本公开不限于此。例如,替代栅工艺同样适用于本公开。另外,还可以应用应变源/漏技术。
根据本公开的另一实施例,在图9中形成的栅介质层1010和栅导体层1012为牺牲栅介质层和牺牲栅导体层。接下来,可以同样按以上结合图9-15描述的方法来处理。
然后,如图16所示,首先选择性去除(例如,RIE)暴露在外的牺牲栅介质层1010。在牺牲栅介质层1010和隔离层1004均包括氧化物的情况下,由于牺牲栅介质层1010较薄,因此对牺牲栅介质层1010的RIE基本上不会影响隔离层1004。在以上形成牺牲栅堆叠的过程中,以牺牲栅导体为掩模进一步构图牺牲栅介质层的情况下,不再需要该操作。
然后,可以选择性去除(例如,RIE)由于牺牲栅介质层1010的去除而露出的鳍1002的部分。对鳍1002该部分的刻蚀可以进行至露出穿通阻挡部1008。由于牺牲栅堆叠(牺牲栅介质层、牺牲栅导体和侧墙)的存在,鳍1002可以留于牺牲栅堆叠下方。
接下来,如图17所示,例如可以通过外延,在露出的鳍部分上形成半导体层1016。随后可以在该半导体层1016中形成源/漏区。根据本公开的一实施例,可以在生长半导体层1016的同时,对其进行原位掺杂。例如,对于n型器件,可以进行n型原位掺杂;而对于p型器件,可以进行p型原位掺杂。另外,为了进一步提升性能,半导体层1016可以包括不同于鳍1002的材料,以便能够向鳍1002(其中将形成器件的沟道)施加应力。例如,在鳍1002包括Si的情况下,对于n型器件,半导体层1016可以包括Si:C(C的原子百分比例如为约0.2-2%),以施加拉应力;对于p型器件,半导体层1016可以包括SiGe(例如,Ge的原子百分比为约15-75%),以施加压应力。
在牺牲栅导体层1012包括多晶硅的情况下,半导体层1016的生长可能也会发生在牺牲栅导体层1012的顶面上。这在附图中并未示出。
接下来,如图18所示,例如通过淀积,形成另一电介质层1018。该电介质层1018例如可以包括氧化物。随后,对该电介质层1018进行平坦化处理例如CMP。该CMP可以停止于侧墙1014,从而露出牺牲栅导体1012。
随后,如图19所示,例如通过TMAH溶液,选择性去除牺牲栅导体1012,从而在侧墙1014内侧形成了空隙。根据另一示例,还可以进一步去除牺牲栅介质层1010。然后,通过在空隙中形成栅介质层1020和栅导体层1022,形成最终的栅堆叠。栅介质层1020可以包括高K栅介质例如HfO2,厚度为约1-5nm。栅导体层1022可以包括金属栅导体。优选地,在栅介质层1020和栅导体层1022之间还可以形成功函数调节层(未示出)。
在以上实施例中,第一溅射并没有实现表面的真正平坦,其主要目的在于减小凸起密度较高区域(或者说,负载条件较高区域)中的溅射负载条件。根据本公开的另一实施例,第一溅射也可以用于实现表面平坦化。
例如,在以上图3所示的第一溅射操作中,并非仅仅使得区域100-1上的负载条件降低,而是使得等离子体溅射能够执行一定的时间段,充分平滑电介质层1004(在区域100-1中)的表面。图4a示出了通过第一溅射进行平坦化之后的结果。尽管在图4a中示出了微观上的起伏,但是事实上电介质层1004(在区域100-1中)的顶面具有充分的平坦度,其起伏可以控制在例如几个纳米之内。在图4a所示的示例中,等离子体溅射可以在到达鳍1002的顶面之前结束,以避免对鳍1002造成过多的损伤。
然后,代替图5所示的操作,如图5a所示,可以在电介层1004上形成构图的另一掩蔽层1024,以遮蔽凸起密度较高的区域100-1(该区域已经经过平坦化处理,如图4a所示)。例如,掩蔽层1024可以包括光刻胶,其可以通过掩模进行曝光、显影等操作来构图。例如,可以根据用来形成鳍1002的掩模(确定鳍的位置和形状等,并因此部分地确定鳍1002的分布密度),来设计用来对掩蔽层1024进行曝光的掩模。优选地,掩蔽层1024与之前的掩蔽层1006不存在位置上的交迭,例如它们之间可以存在间隙G。
然后,可以对露出的电介质层1004部分进行溅射(“第二溅射”)。例如,溅射可以使用等离子体,如Ar或N等离子体。在此,例如可以根据等离子体溅射对电介质层1004的切削速度,控制溅射参数例如溅射功率和气压等,来确定进行等离子体溅射的时间,使得等离子体溅射能够执行一定的时间段,以充分平滑电介质层1004(在区域100-2中)的表面。在此,可以根据区域100-1、100-2中的溅射负载条件以及第一溅射、第二溅射中使用的工艺参数,来使得第一溅射和第二溅射后电介质层1004在区域100-1、100-2中的表面大致持平。例如,表面高度的差异在3-5nm之内。之后,可以去除掩蔽层1024。
经过上述第一溅射、第二溅射的处理,同样可以得到如图6所示的结构。另外,在该实施例中,第一溅射、第二溅射的顺序可以改变。
同样地,在以上图10所示的第一溅射操作中,并非仅仅使得区域100-1上的负载条件降低,而是使得等离子体溅射能够执行一定的时间段,充分平滑栅导体层1012(在区域100-1中)的表面。图11a示出了通过第一溅射进行平坦化之后的结果。尽管在图11a中示出了微观上的起伏,但是事实上栅导体层1012(在区域100-1中)的顶面具有充分的平坦度,其起伏可以控制在例如几个纳米之内。
然后,代替图12所示的操作,如图12a所示,可以在栅导体层1012上形成构图的另一掩蔽层1026,以遮蔽凸起密度较高的区域100-1(该区域已经经过平坦化处理,如图11a所示)。例如,掩蔽层1026可以包括光刻胶,其可以通过掩模进行曝光、显影等操作来构图。例如,可以根据用来形成鳍1002的掩模(确定鳍的位置和形状等,并因此部分地确定鳍1002的分布密度),来设计用来对掩蔽层1026进行曝光的掩模。优选地,掩蔽层1026与之前的掩蔽层1014不存在位置上的交迭,例如它们之间可以存在间隙G。
然后,可以对露出的栅导体层1012部分进行溅射(“第二溅射”)。例如,溅射可以使用等离子体,如Ar或N等离子体。在此,例如可以根据等离子体溅射对栅导体层1012的切削速度,控制溅射参数例如溅射功率和气压等,来确定进行等离子体溅射的时间,使得等离子体溅射能够执行一定的时间段,以充分平滑栅导体层1012(在区域100-2中)的表面。在此,可以根据区域100-1、100-2中的溅射负载条件以及第一溅射、第二溅射中使用的工艺参数,来使得第一溅射和第二溅射后栅导体层1012在区域100-1、100-2中的表面大致持平。例如,表面高度的差异在3-5nm之内。之后,可以去除掩蔽层1026。
经过上述第一溅射、第二溅射的处理,同样可以得到如图13所示的结构。另外,在该实施例中,第一溅射、第二溅射的顺序可以改变。
这里需要指出的是,尽管在上述实施例中描述了本公开的技术应用于FinFET的制造,但是本公开不限于此。本公开的技术可以适用于各种需要进行平坦化处理的应用中。
在以上的描述中,对于各层的构图、刻蚀等技术细节并没有做出详细的说明。但是本领域技术人员应当理解,可以通过各种技术手段,来形成所需形状的层、区域等。另外,为了形成同一结构,本领域技术人员还可以设计出与以上描述的方法并不完全相同的方法。另外,尽管在以上分别描述了各实施例,但是这并不意味着各个实施例中的措施不能有利地结合使用。
以上对本公开的实施例进行了描述。但是,这些实施例仅仅是为了说明的目的,而并非为了限制本公开的范围。本公开的范围由所附权利要求及其等价物限定。不脱离本公开的范围,本领域技术人员可以做出多种替代和修改,这些替代和修改都应落在本公开的范围之内。

Claims (12)

1.一种对衬底上形成的材料层进行平坦化的方法,包括:
对材料层进行第一溅射,在进行第一溅射时,以第一掩蔽层遮蔽材料层中溅射的负载条件相对较低的区域;
去除第一掩蔽层;以及
对材料层进行第二溅射,以使材料层平坦。
2.根据权利要求1所述的方法,其中,所述衬底上形成有非均匀分布的多个特征,所述材料层形成于衬底上覆盖所述多个特征,所述特征分布密度较低的区域对应于所述溅射的负载条件相对较低的区域。
3.根据权利要求1所述的方法,其中,进行第一溅射,以使材料层未被第一掩蔽层覆盖的部分平坦;在去除第一掩蔽层之后,且在进行第二溅射之前,该方法还包括:
在材料层的所述部分上形成第二掩蔽层,其中第二掩蔽层的位置与第一掩蔽层的位置不交迭。
4.根据权利要求1所述的方法,其中,利用Ar或N等离子体进行溅射。
5.根据权利要求2所述的方法,其中,所述特征包括鳍,所述材料层包括电介质。
6.根据权利要求5所述的方法,其中,在第二溅射之后,该方法还包括:
进一步回蚀材料层,以露出鳍。
7.根据权利要求6所述的方法,其中,在进一步回蚀之后,该方法还包括:进行离子注入,以在鳍位于进一步回蚀后的材料层的表面下方的部分中形成穿通阻挡层。
8.根据权利要求7所述的方法,其中,在离子注入之后,该方法还包括:
在材料层上形成横跨鳍的牺牲栅堆叠;
以牺牲栅堆叠为掩模,选择性刻蚀鳍,直至露出穿通阻挡层;
在鳍的露出部分上形成半导体层,用以形成源/漏区;以及
形成栅堆叠替代牺牲栅堆叠。
9.根据权利要求2所述的方法,其中,所述特征包括鳍,所述材料层包括栅导体层,所述栅导体层介由栅介质层覆盖鳍。
10.根据权利要求8所述的方法,其中,
形成牺牲栅堆叠包括:
在材料层上形成牺牲栅介质层;
在牺牲栅介质层上形成牺牲栅导体层;
对牺牲栅导体层进行平坦化,并构图;以及
在构图后的牺牲栅导体的侧壁上形成侧墙,其中,对牺牲栅导体层进行平坦化包括:
在所述特征分布密度较低的区域,形成另外的第一掩蔽层,并对露出的牺牲栅导体层部分进行另外的第一溅射;
去除另外的第一掩蔽层;以及
对牺牲栅导体层进行另外的第二溅射,以使牺牲栅导体层平坦。
11.根据权利要求10所述的方法,其中,
进行另外的第一溅射,以使牺牲栅导体层的露出部分平坦;
在去除另外的第一掩蔽层之后,且在进行另外的第二溅射之前,该方法还包括:
在牺牲栅导体层的露出部分上形成另外的第二掩蔽层,另外的第二掩蔽层的位置与另外的第一掩蔽层的位置不交迭。
12.一种对衬底上形成的材料层进行平坦化的方法,包括:
对材料层进行第一溅射,在进行第一溅射时,以第一掩蔽层遮蔽材料层中溅射的负载条件相对较高的区域,其中进行第一溅射,以使材料层中未被第一掩蔽层遮蔽的部分平坦;
去除第一掩蔽层;
在材料层的所述部分上形成第二掩蔽层,其中第二掩蔽层的位置与第一掩蔽层的位置不交迭;以及
对材料层进行第二溅射,以使材料层平坦。
CN201210505860.1A 2012-11-30 2012-11-30 平坦化处理方法 Active CN103854966B (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201210505860.1A CN103854966B (zh) 2012-11-30 2012-11-30 平坦化处理方法
PCT/CN2012/087020 WO2014082357A1 (zh) 2012-11-30 2012-12-20 平坦化处理方法
US14/647,393 US9406549B2 (en) 2012-11-30 2012-12-20 Planarization process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210505860.1A CN103854966B (zh) 2012-11-30 2012-11-30 平坦化处理方法

Publications (2)

Publication Number Publication Date
CN103854966A true CN103854966A (zh) 2014-06-11
CN103854966B CN103854966B (zh) 2016-08-24

Family

ID=50827118

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210505860.1A Active CN103854966B (zh) 2012-11-30 2012-11-30 平坦化处理方法

Country Status (3)

Country Link
US (1) US9406549B2 (zh)
CN (1) CN103854966B (zh)
WO (1) WO2014082357A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105161418A (zh) * 2014-06-12 2015-12-16 中芯国际集成电路制造(上海)有限公司 一种半导体器件及其制作方法和电子装置
CN114038755A (zh) * 2021-10-25 2022-02-11 上海华力集成电路制造有限公司 刻蚀方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9337209B1 (en) * 2014-12-31 2016-05-10 Macronix International Co., Ltd. Semiconductor device and method of fabricating the same
US9847388B2 (en) * 2015-09-01 2017-12-19 International Business Machines Corporation High thermal budget compatible punch through stop integration using doped glass
CN106486377B (zh) * 2015-09-01 2019-11-29 中芯国际集成电路制造(上海)有限公司 鳍片式半导体器件及其制造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0856024A (ja) * 1994-08-09 1996-02-27 Nec Corp 集積回路の製造方法
TW288161B (zh) * 1994-12-22 1996-10-11 Siemens Ag
WO2001056070A1 (en) * 2000-01-27 2001-08-02 Infineon Technologies North America Corp. Planarization process to achieve improved uniformity across semiconductor wafers
US20050170661A1 (en) * 2004-02-04 2005-08-04 International Business Machines Corporation Method of forming a trench structure
CN1841666A (zh) * 2005-03-31 2006-10-04 中国科学院微电子研究所 一种替代栅的制备方法
US20080191249A1 (en) * 2007-02-08 2008-08-14 Taiwan Semiconductor Manufacturing Co., Ltd. Methods for planarization of dielectric layer around metal patterns for optical efficiency enhancement
CN101582390A (zh) * 2008-05-14 2009-11-18 台湾积体电路制造股份有限公司 集成电路结构的形成方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5416048A (en) * 1993-04-16 1995-05-16 Micron Semiconductor, Inc. Method to slope conductor profile prior to dielectric deposition to improve dielectric step-coverage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0856024A (ja) * 1994-08-09 1996-02-27 Nec Corp 集積回路の製造方法
TW288161B (zh) * 1994-12-22 1996-10-11 Siemens Ag
WO2001056070A1 (en) * 2000-01-27 2001-08-02 Infineon Technologies North America Corp. Planarization process to achieve improved uniformity across semiconductor wafers
US20050170661A1 (en) * 2004-02-04 2005-08-04 International Business Machines Corporation Method of forming a trench structure
CN1841666A (zh) * 2005-03-31 2006-10-04 中国科学院微电子研究所 一种替代栅的制备方法
US20080191249A1 (en) * 2007-02-08 2008-08-14 Taiwan Semiconductor Manufacturing Co., Ltd. Methods for planarization of dielectric layer around metal patterns for optical efficiency enhancement
CN101582390A (zh) * 2008-05-14 2009-11-18 台湾积体电路制造股份有限公司 集成电路结构的形成方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105161418A (zh) * 2014-06-12 2015-12-16 中芯国际集成电路制造(上海)有限公司 一种半导体器件及其制作方法和电子装置
CN105161418B (zh) * 2014-06-12 2019-04-09 中芯国际集成电路制造(上海)有限公司 一种半导体器件及其制作方法和电子装置
CN114038755A (zh) * 2021-10-25 2022-02-11 上海华力集成电路制造有限公司 刻蚀方法

Also Published As

Publication number Publication date
US9406549B2 (en) 2016-08-02
WO2014082357A1 (zh) 2014-06-05
US20150325452A1 (en) 2015-11-12
CN103854966B (zh) 2016-08-24

Similar Documents

Publication Publication Date Title
CN111584486B (zh) 具有交错结构的半导体装置及其制造方法及电子设备
US9583621B2 (en) Semiconductor device and method of manufacturing the same
CN103928333A (zh) 半导体器件及其制造方法
US9502560B2 (en) Semiconductor device and method of manufacturing the same
CN103855009A (zh) 鳍结构制造方法
CN103811341A (zh) 半导体器件及其制造方法
CN103811320A (zh) 半导体器件及其制造方法
CN103854981A (zh) 鳍结构制造方法
CN111048588B (zh) 半导体器件及其制造方法及包括该半导体器件的电子设备
CN103811346A (zh) 半导体器件及其制造方法
US10068803B2 (en) Planarization process
CN111106176B (zh) 半导体器件及其制造方法及包括该半导体器件的电子设备
CN103811344A (zh) 半导体器件及其制造方法
CN105097649A (zh) 半导体结构的形成方法
CN103811340B (zh) 半导体器件及其制造方法
CN103854966A (zh) 平坦化处理方法
CN104425601A (zh) 半导体器件及其制造方法
CN103985755A (zh) 半导体设置及其制造方法
CN103811339A (zh) 半导体器件及其制造方法
CN103426756B (zh) 半导体器件及其制造方法
CN103578987A (zh) 半导体器件及其制造方法
CN114093949B (zh) 抑制gidl的mosfet及其制造方法及包括mosfet的电子设备
CN103681279A (zh) 半导体器件及其制造方法
US20130295736A1 (en) Fabrication method of trench power semiconductor structure
CN104078332A (zh) 鳍制造方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant