CN1121716C - 在制造集成电路过程中用于使非保形层平面化的方法 - Google Patents
在制造集成电路过程中用于使非保形层平面化的方法 Download PDFInfo
- Publication number
- CN1121716C CN1121716C CN98119767A CN98119767A CN1121716C CN 1121716 C CN1121716 C CN 1121716C CN 98119767 A CN98119767 A CN 98119767A CN 98119767 A CN98119767 A CN 98119767A CN 1121716 C CN1121716 C CN 1121716C
- Authority
- CN
- China
- Prior art keywords
- conformal layer
- wide
- layer
- narrow
- conformal
- 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.)
- Expired - Fee Related
Links
- 239000004065 semiconductor Substances 0.000 title description 7
- 238000004519 manufacturing process Methods 0.000 title description 5
- 239000000758 substrate Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 17
- 230000008021 deposition Effects 0.000 claims description 13
- 238000005530 etching Methods 0.000 claims description 13
- 238000005498 polishing Methods 0.000 claims description 9
- 238000012876 topography Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 15
- 238000000151 deposition Methods 0.000 description 12
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 12
- 229920005591 polysilicon Polymers 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 10
- 150000004767 nitrides Chemical class 0.000 description 9
- 238000005229 chemical vapour deposition Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 238000001020 plasma etching Methods 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H01L21/31—Treatment 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
-
- 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
- H01L21/70—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
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
- H01L21/76229—Concurrent 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
-
- 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
- H01L21/31—Treatment 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
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
- H01L21/31053—Planarisation of the insulating layers involving a dielectric removal step
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Semiconductor Memories (AREA)
- Drying Of Semiconductors (AREA)
- Element Separation (AREA)
Abstract
本发明涉及一种在制造集成电路过程中用于使非保形层平面化的方法。从形成于复杂图形之上的非保形层形成一基本上平面的表面,它包括带有窄间隙的窄图形和带有宽间隙的宽图形。在非保形层上沉积一保形层。该表面然后被抛光,以暴露宽图形上的非保形层。然后,用对非保形层具有选择性的蚀刻基本除去宽图形之上的非保形层。然后,除去保形层,暴露非保形层。和以前相比,现在的非保形层的厚度更加均匀。这就使抛光可以形成一平表面,其宽间隙内的表面凹隔减少了。
Description
技术领域
本发明总体上涉及半导体制造,更具体地说,涉及用非保形层沉积来获得一平表面,即涉及在制造集成电路过程中用于使非保形层平面化的方法。
背景技术
在半导体制造过程中,在基底上形成绝缘层,半导体层和导电层。这些层被构图,以形成图形(feature)和间隔。图形和间隔的最小尺寸或特性尺寸(feature size)取决于光刻系统的分辨能力。图形和间隔被构图,以形成器件,如晶体管,电容器和电阻器。这些器件然后互连,以获得理想的电功能,形成集成电路(IC)。
在先进的IC设计中,不同的器件有形成不同规格的器件图形的不同要求。结果,器件层具有不同规格的图形和间隔,形成复杂的形貌。一介电材料(如氧化物)用于填充图形之间的间隔。这种材料典型地通过多种已知的化学汽相沉积来沉积。沉积的氧化物材料在下置器件层之上形成一保形层。所以,沉积的氧化物材料具有一形貌,它反映下置层的形貌,重新形成不是平的表面。然后,用化学机械抛光对不平的表面平面化,以产生一平表面。这正是所需要的,它允许形成另外的器件层,从而在其上形成另外的器件结构,所以,增加了器件的密度。
在先进的IC设计中,随图形尺寸的减小,图形之间的间隔变得越来越小,所以,得到高的高宽比率(aspect ratio)的图形。小的具有高的高宽比率的图形使得用传统的CVD技术填充间隔很困难。为了方便较小间隔的间隙填充,需要用氧化物的高密度等离子化学气相沉积(HDP-CVD,high densityplasma chemical Vapour deposition)。
HDP-CVD氧化物形成一非保形层。非保形层有一非平表面,它不反映下置层的形貌。非保形层的厚度在宽器件图形之上较厚,而在窄器件图形之上较薄。这种形貌为形成平表面的传统的平面化技术带来困难。具体地说,因为在较宽器件图形上比在较窄器件图形上有更多量的沉积材料,这样会发生较窄器件图形的过腐蚀。这种过腐蚀反过来会影响较窄器件的性能,因此,降低了产量。
上述讨论证明需要在非保形层沉积以后获得一个平面,而不会产生一些器件图形的过腐蚀。
发明概述
本发明的任务是提供一种半导体制造过程中非保形层的平面化方法,以便在非保形层沉积以后获得一个平面,而不会产生一些器件图形的过腐蚀。
为实现上述目的,本发明提供一种在制造集成电路过程中用于使非保形层平面化的方法,包括:
提供一基底,其中,基底的表面包括由窄间隙隔开的窄图形和由宽间隙隔开的宽图形;
在基底表面上沉积一非保形层,以填充窄和宽间隙,非保形层在宽图形上的厚度大于在窄图形上的厚度;
在非保形层上沉积一保形层,其中,下置非保形层的形貌反映在保形层的表面上;
使保形层平面化,用非保形层作为停止层,该平面化过程在保形层和非保形层之间形成一平表面,其中,宽图形之上的非保形层被暴露;
蚀刻非保形层,其对保形层具有选择性,除了宽图形的边缘处小部分被保形层保护外,宽图形上的非保形层基本上被除去;
用蚀刻除去保形层,蚀刻使非保形层保持在窄图形的表面上和宽图形的边缘的小部分上;和
用抛光来形成带有宽和窄图形表面的平的表面,其中,抛光产生一基本上平面的表面,其在宽间隙上的表面凹隔减少了,因为宽图形上的非保形层基本上被除去。
本发明涉及集成电路的制造。更具体地说,本发明提供了一种用于在沉积于复杂图形之上的非保形层上形成一平面的表面的方法,该平表面上包括带有窄间隙的窄图形和带有宽间隙的宽图形。该方法包括在基底的表面上沉积一非保形层,以填充窄和宽间隔。非保形层在宽图形上的厚度大于在窄图形上的厚度。一保形层沉积在非保形层之上,其中,下置非保形层的形貌反映在保形层的表面上。然后,用非保形层作停止层使基底表面平面化。平面化过程在保形层和非保形层之间产生一平表面,其中,宽图形上的非保形层被暴露。用对保形层具有选择性的蚀刻来基本除去宽图形上的非保形层(除了被保形层保护的宽图形的边缘处的小部分以外)。一抛光工艺(如CMP)产生一平表面,其上带有宽和窄图形的表面。该抛光产生了一基本是平的表面,其宽间隔中的凹陷表面减少了,因为宽图形上的非保形层基本被除去。
附图的简要说明
参考附图,通过下面的详细说明,就能更好地理解本发明,其中:
图1a-1g示出了本发明的一个实施例,用于在一保形膜上提供一平表面。
具体实施方式
本发明在非保形层形成以后提供平的表面,而不产生一些器件图形的过渡腐蚀。为了方便对本发明的理解,结合形成隔离集成电路器件的浅沟槽隔离(STI,shallow trench isolation)来对本发明进行介绍。然而,很明显,本发明的范围更广,可以用来减少抛光处理的某些部分的过渡腐蚀。
图1a-1g示出了根据本发明的一个实施例,提供一平表面的工艺过程。参考图1a,示出了集成电路一部分的截面。这种集成电路包括随机存取存储器(RAM,random acess memory);动态随机存取存储器(DRAM,dynamicrandom acess memoty);同步动态随机存取存储器(SDRAM,synchronousDRAM);和只读存储器(ROM,read only memoty),其它集成电路包括专用集成电路(ASIC)或任意逻辑电路。典型地,多个集成电路并行地形成于一晶片之上。工艺结束以后,切割晶片,集成电路分成单个芯片。然后,组装芯片,形成最终产品,它们可以用于计算机系统、单元电话机、个人数字助手和其它电子产品中。然而,为了便于理解,通过集成电路的形成来介绍本发明。另外,集成电路可以处于工艺过程中的任一阶段。
提供一基底101,用于形成集成电路。基底101例如包括一硅晶片。其它的半导体基底,如砷化镓、锗、绝缘层上的硅(SOI,silicon on insulator)、或其它半导体材料也可以采用。基底可以或轻或重地掺杂具有预定电导率的掺杂剂,以获得理想的电性能。
如图所示,在基底表面上形成器件图形,例如被间隔115和130分开的台面110和112。尽管,如图所示,器件图形形成于硅基底内,基底本身可以包括彼此堆叠的器件层,为了方便讨论,这种堆叠的器件图形在这里称为基底。
在图示的实施例中,间隙代表形成STI的浅沟槽。STI隔开形成器件的有效器件区域,图中用台面表示,在此台面上形成器件。在一个集成电路中,器件元件一般尺寸有变化。结果,有效器件区域的大小也变化。如图所示,有效区域110为较窄的类型,而有效区域112为较宽的类型。另外,由于有效区域大小的变化,浅沟槽可以是相对较窄的类型115或较宽的类型130。有效面积和浅沟槽的实际大小并不关键。因为人们需要制造具有高部件密度的集成电路,所以窄类型典型地与最小图形尺寸(F)或基本图形尺寸(groundrule)对应,而宽类型与比最小图形尺寸大的规格对应。这样,基底的表面几何结构包括高度接近定值的有效区域110和112。有效区域的宽度,与隔离它们的沟槽一样,是变化的。
在台面的顶部提供一停止层140。停止层例如是用来为图形构图的硬掩模层。停止层还为后续处理起着抛光或蚀刻停止的作用。停止层包括这样一种材料,使得用来填充STI的材料可以相对于停止层的材料被有选择地除去。在一个实施例中,停止层包括氮化物。另外,在硅基底和氮化物层之间有一薄的氧化物层,以促进器件层之间的粘接。
沟槽和台面的形成是用传统的光刻和蚀刻技术实现的。这包括在覆盖基底的氮化物层的表面上沉积一光致抗蚀剂层。产生例如深紫外线(DUV,deep ultra-violet)辐射的暴露源照射一包括所需图案的掩模。照射产生被投影或印制到基底表面的掩模的图象,用DUV辐射选择性地对光致抗蚀剂曝光。根据所用光致抗蚀剂是正性的还是负性的,在显影过程中去除光致抗蚀剂的曝光部分或者未曝光部分,以便有选择地暴露下面的基底的与浅沟槽区域对应的区域。然后,暴露区域通过反应离子蚀刻(RIE,reactive ion etching)腐蚀,形成台面110和112以及间隔115和130。
参考图1b,在基底的表面上形成一非保形层160。由于层160的非保形性,它在较宽有效区域112的表面上的厚度比在窄有效区域110的表面上的厚度大。所以,下置层的形貌不反映在沉积层160上。
在一个实施例中,非保形层包括通过利用高强度等离子源(HDP-CVD)的等离子增强化学气相沉积(PEVCD,plasma-enhanced chemical vapordeposifion)来沉积的氧化物。这种HDP-CVD技术采用感应耦合等离子源。HDP-CVD技术在Francombe著的“薄膜物理学”(Francombe,
Physics of Thin Film,Academic Press,1994)中作过描述,这里引以为参考。HDP-CVD沉积的氧化物充分填充沟槽,而不会产生空洞。提供好的间隙填充而无空洞的其它非保形层包括通过电子回旋加速器和螺旋波激励等离子技术形成的非保形层。这种技术在上面提到的Francombe的“薄膜物理学”中也作了介绍,这里引以为参考。
如图所示,HDP-CVD氧化物层的厚度足以完全填充浅沟槽,浅沟槽的填充还涂覆基底表面。从图中可以看出,HDP-CVD技术在阵列中提供了一独特的填充形状。在有效区域上面,HDP-CVD氧化物从浅沟槽中斜着伸出,在氧化物层涂在基底表面上时,形成基本为倾斜的边缘。如图所示,倾斜边缘在窄有效区域110之上形成小三角形结构163。宽有效区域112上的氧化物层160包括基本倾斜的互补边缘165和166,两者之间有一平的中间部分168。该区域的氧化物层比三角形结构163厚。有效区域上形成的独特的三角形结构是由于HDP-CVD工艺过程中发生的即时溅射(in-situ sputtering)所导致的。
但是,必须注意的是三角形的形成并不是关键的,图中只是作为实例示出。氧化物层在有效区域上是否形成三角形,也就是,两个互补倾斜边的交汇,取决于有效区域的宽度和氧化物层的厚度。有些窄有效区域可能不够窄,所以使互补边不能交汇。这样,氧化层的形状将是类似于位于宽有效区域上的部分的三角形,只不过其平面的中心部分较窄。
有利地,HDP-CVD提供了好的间隙填充,其具有充足的密度,以为后续处理步骤提供充足的湿蚀刻选择性。所以,HDP-CVD氧化物不需要约为台阶1.5倍的过填充,此过填充是非HDP-CVD氧化物所需要的。由于能够沉积较少量的材料,除去的也就少。所以,提高了生产率。
参考图1c,在层160上形成牺牲器件层170。牺牲器件层包括可以相对于非保形层160有选择地除去的材料。在一个实施例中,牺牲层包括多晶硅(poly),多晶硅通过化学气相沉积(CVD)沉积在表面上。如图所示,CVD在非保形层160上形成了一保形多晶硅层。多晶硅层的厚度足以使凹陷区域171中的多晶硅的上表面位于非保形层的最高区域175的上表面之上。
参考图1d,多晶硅层被对氧化物具有选择性的CMP平面化。CMP抛光首先除去多晶硅的凸起部分,从其上面除去材料。随着越来越多的材料从凸起部分上除去,多晶硅的表面变得更平。CMP工艺继续,直至凸起部分中的氧化物160的表面被暴露,所以,形成一平的上表面179。如图所示,平的上表面包括多晶硅和氧化物区域。
参考图1e,执行对多晶硅和氮化物具有选择性的各向异性蚀刻,以除去暴露的氧化物材料。蚀刻例如采用反应离子蚀刻。台面的表面上的氮化物层140起着蚀刻停止层的作用。由于反应离子蚀刻是各向异性的,被多晶硅保护的氧化物部分181仍然保留着。
在图1f中,反应离子蚀刻以后以例如干蚀刻除去多晶硅。这样就留下随宽有效区域112之上的氮化物层140一起暴露的非保形层。另外,氧化物栅栏(oxide fence)180保留在宽有效区域的旁边。从图中可以看出,在窄有效区域上面的区域需要去除的氧化物材料的相对量与在宽有效区域之上需要去除的氧化物材料的量大约相同。尽管栅栏180比三角形163高,但是,因为它们非常薄,所以很容易用CMP除去。这就使CMP可以使非保形层160的表面平面化,用氮化物140作抛光停止层,而不会过渡腐蚀窄有效区域110,如图1f所示。
平表面形成以后,氮化物被从台面的表面上除去。氮化物的除去是通过对硅具有选择性的例如湿蚀刻来实现的。这样可以形成一平表面,台面的顶部带有氧化物,从而,完成STI的形成。
在提供了包括允许器件隔离的STI区域的高度平面化表面以后,可以根据已知的IC技术进一步对IC进行处理。
至此,已根据各实施例具体示出并详细介绍了本发明,本领域的技术人员应当理解,在不背离本发明范畴的前提下可以对本发明进行修改和变化。如,本发明的实施例是根据用于绝缘和介电层的具体材料进行描述的。另外,开孔的直径可以根据具体应用而变化。本发明的范畴不是根据上面的描述而确定,而是根据所附权利要求和它们的等同物来确定的。
Claims (1)
1.一种在制造集成电路过程中用于使非保形层平面化的方法,包括:
提供一基底,其中,基底的表面包括由窄间隙隔开的窄图形和由宽间隙隔开的宽图形;
在基底表面上沉积一非保形层,以填充窄和宽间隙,非保形层在宽图形上的厚度大于在窄图形上的厚度;
在非保形层上沉积一保形层,其中,下置非保形层的形貌反映在保形层的表面上;
使保形层平面化,用非保形层作为停止层,该平面化过程在保形层和非保形层之间形成一平表面,其中,宽图形之上的非保形层被暴露;
蚀刻非保形层,其对保形层具有选择性,除了宽图形的边缘处小部分被保形层保护外,宽图形上的非保形层基本上被除去;
用蚀刻除去保形层,蚀刻使非保形层保持在窄图形的表面上和宽图形的边缘的小部分上;和
用抛光来形成带有宽和窄图形表面的平的表面,其中,抛光产生一基本上平面的表面,其在宽间隙上的表面凹隔减少了,因为宽图形上的非保形层基本上被除去。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/940,650 US5880007A (en) | 1997-09-30 | 1997-09-30 | Planarization of a non-conformal device layer in semiconductor fabrication |
US940,650 | 1997-09-30 | ||
US940650 | 1997-09-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1226744A CN1226744A (zh) | 1999-08-25 |
CN1121716C true CN1121716C (zh) | 2003-09-17 |
Family
ID=25475206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN98119767A Expired - Fee Related CN1121716C (zh) | 1997-09-30 | 1998-09-28 | 在制造集成电路过程中用于使非保形层平面化的方法 |
Country Status (7)
Country | Link |
---|---|
US (2) | US5880007A (zh) |
EP (1) | EP0905756B1 (zh) |
JP (1) | JPH11162987A (zh) |
KR (1) | KR100279016B1 (zh) |
CN (1) | CN1121716C (zh) |
DE (1) | DE69836943T2 (zh) |
TW (1) | TW392247B (zh) |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100230815B1 (ko) * | 1997-03-18 | 1999-11-15 | 김영환 | 반도체 메모리 소자 격리 방법 |
US5952241A (en) * | 1997-09-03 | 1999-09-14 | Vlsi Technology, Inc. | Method and apparatus for improving alignment for metal masking in conjuction with oxide and tungsten CMP |
KR100239453B1 (ko) * | 1997-11-06 | 2000-01-15 | 김영환 | 반도체 소자의 소자 격리층 형성 방법 |
WO1999038204A1 (fr) * | 1998-01-23 | 1999-07-29 | Rohm Co., Ltd. | Interconnexion damasquinee et dispositif a semi-conducteur |
US6359471B1 (en) * | 1998-03-09 | 2002-03-19 | Infineon Technologies North America Corp. | Mixed swing voltage repeaters for high resistance or high capacitance signal lines and methods therefor |
US6057207A (en) * | 1998-03-25 | 2000-05-02 | Taiwan Semiconductor Manufacturing Company | Shallow trench isolation process using chemical-mechanical polish with self-aligned nitride mask on HDP-oxide |
US7001713B2 (en) * | 1998-04-18 | 2006-02-21 | United Microelectronics, Corp. | Method of forming partial reverse active mask |
US6057210A (en) * | 1998-04-21 | 2000-05-02 | Vanguard International Semiconductor Corporation | Method of making a shallow trench isolation for ULSI formation via in-direct CMP process |
US6048765A (en) * | 1998-06-03 | 2000-04-11 | Texas Instruments - Acer Incorporated | Method of forming high density buried bit line flash EEPROM memory cell with a shallow trench floating gate |
US6153467A (en) * | 1998-06-03 | 2000-11-28 | Texas Instruments - Acer Incorporated | Method of fabricating high density buried bit line flash EEPROM memory cell with a shallow trench floating gate |
US6060370A (en) * | 1998-06-16 | 2000-05-09 | Lsi Logic Corporation | Method for shallow trench isolations with chemical-mechanical polishing |
KR100319185B1 (ko) * | 1998-07-31 | 2002-01-04 | 윤종용 | 반도체 장치의 절연막 형성 방법 |
US5930646A (en) * | 1998-10-09 | 1999-07-27 | Chartered Semiconductor Manufacturing, Ltd. | Method of shallow trench isolation |
JP3443358B2 (ja) * | 1999-03-24 | 2003-09-02 | シャープ株式会社 | 半導体装置の製造方法 |
KR100295782B1 (ko) * | 1999-07-03 | 2001-07-12 | 윤종용 | 얕은 트렌치 소자분리 방법 |
US6261957B1 (en) * | 1999-08-20 | 2001-07-17 | Taiwan Semiconductor Manufacturing Company | Self-planarized gap-filling by HDPCVD for shallow trench isolation |
US6191000B1 (en) * | 1999-08-23 | 2001-02-20 | Macronix International Co., Ltd. | Shallow trench isolation method used in a semiconductor wafer |
US7253047B2 (en) * | 1999-09-01 | 2007-08-07 | Micron Technology, Inc. | Semiconductor processing methods of forming transistors, semiconductor processing methods of forming dynamic random access memory circuitry, and related integrated circuitry |
US6197691B1 (en) | 1999-11-15 | 2001-03-06 | Chartered Semiconductor Manufacturing Ltd. | Shallow trench isolation process |
TW432600B (en) * | 1999-12-16 | 2001-05-01 | United Microelectronics Corp | Process for shallow trench isolation structure |
US6472291B1 (en) | 2000-01-27 | 2002-10-29 | Infineon Technologies North America Corp. | Planarization process to achieve improved uniformity across semiconductor wafers |
US6348706B1 (en) * | 2000-03-20 | 2002-02-19 | Micron Technology, Inc. | Method to form etch and/or CMP stop layers |
US6391792B1 (en) | 2000-05-18 | 2002-05-21 | Taiwan Semiconductor Manufacturing Co., Ltd | Multi-step chemical mechanical polish (CMP) planarizing method for forming patterned planarized aperture fill layer |
US6593240B1 (en) | 2000-06-28 | 2003-07-15 | Infineon Technologies, North America Corp | Two step chemical mechanical polishing process |
DE10056261A1 (de) * | 2000-11-14 | 2002-05-29 | Infineon Technologies Ag | Verfahren zur Herstellung eines integrierten Halbleiter-Bauelements |
US6350692B1 (en) | 2000-12-14 | 2002-02-26 | Infineon Technologies Ag | Increased polish removal rate of dielectric layers using fixed abrasive pads |
US6403484B1 (en) | 2001-03-12 | 2002-06-11 | Chartered Semiconductor Manufacturing Ltd. | Method to achieve STI planarization |
US6436833B1 (en) | 2001-03-15 | 2002-08-20 | Chartered Semiconductor Manufacturing Ltd. | Method for pre-STI-CMP planarization using poly-si thermal oxidation |
US6653237B2 (en) * | 2001-06-27 | 2003-11-25 | Applied Materials, Inc. | High resist-selectivity etch for silicon trench etch applications |
DE10141839A1 (de) * | 2001-08-27 | 2002-11-14 | Infineon Technologies Ag | Verfahren zur Herstellung einer selbstjustierenden Maske für eine Struktur mit einer grossen Fläche |
US6780730B2 (en) | 2002-01-31 | 2004-08-24 | Infineon Technologies Ag | Reduction of negative bias temperature instability in narrow width PMOS using F2 implantation |
AU2002364041A1 (en) * | 2002-02-26 | 2003-09-09 | Advanced Micro Devices, Inc. | Method and system for controlling the chemical mechanical polishing of substrates by calculating an overpolishing time and/or a polishing time of a final polishing step |
US6828211B2 (en) * | 2002-10-01 | 2004-12-07 | Taiwan Semiconductor Manufacturing Co., Ltd. | Shallow trench filled with two or more dielectrics for isolation and coupling or for stress control |
US6821865B2 (en) * | 2002-12-30 | 2004-11-23 | Infineon Technologies Ag | Deep isolation trenches |
CN1328764C (zh) * | 2003-06-27 | 2007-07-25 | 旺宏电子股份有限公司 | 使半导体沉积层平整的方法 |
KR20050008364A (ko) * | 2003-07-15 | 2005-01-21 | 삼성전자주식회사 | 층간절연막 평탄화 방법 |
US7141468B2 (en) * | 2003-10-27 | 2006-11-28 | Texas Instruments Incorporated | Application of different isolation schemes for logic and embedded memory |
KR100558007B1 (ko) * | 2003-11-24 | 2006-03-06 | 삼성전자주식회사 | 트랜지스터 및 그 제조방법 |
US7405108B2 (en) | 2004-11-20 | 2008-07-29 | International Business Machines Corporation | Methods for forming co-planar wafer-scale chip packages |
KR100731090B1 (ko) * | 2005-12-28 | 2007-06-25 | 동부일렉트로닉스 주식회사 | 반도체 소자의 소자 분리막 형성 방법 |
KR100784106B1 (ko) * | 2006-09-08 | 2007-12-10 | 주식회사 하이닉스반도체 | 반도체 소자의 금속 배선 형성 방법 |
US9142400B1 (en) | 2012-07-17 | 2015-09-22 | Stc.Unm | Method of making a heteroepitaxial layer on a seed area |
US10665582B2 (en) * | 2017-11-01 | 2020-05-26 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method of manufacturing semiconductor package structure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0341898A2 (en) * | 1988-05-12 | 1989-11-15 | Advanced Micro Devices, Inc. | Improved method of planarization of topologies in integrated circuit structures |
EP0407047A2 (en) * | 1989-07-03 | 1991-01-09 | Advanced Micro Devices, Inc. | Improved method of planarization of topologies in integrated circuit structures |
US5173439A (en) * | 1989-10-25 | 1992-12-22 | International Business Machines Corporation | Forming wide dielectric-filled isolation trenches in semi-conductors |
US5494854A (en) * | 1994-08-17 | 1996-02-27 | Texas Instruments Incorporated | Enhancement in throughput and planarity during CMP using a dielectric stack containing HDP-SiO2 films |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4956313A (en) * | 1987-08-17 | 1990-09-11 | International Business Machines Corporation | Via-filling and planarization technique |
US5498565A (en) * | 1991-11-29 | 1996-03-12 | Sony Corporation | Method of forming trench isolation having polishing step and method of manufacturing semiconductor device |
JP3060714B2 (ja) * | 1992-04-15 | 2000-07-10 | 日本電気株式会社 | 半導体集積回路の製造方法 |
JP3360350B2 (ja) * | 1993-04-21 | 2002-12-24 | ヤマハ株式会社 | 表面平坦化法 |
US5362669A (en) * | 1993-06-24 | 1994-11-08 | Northern Telecom Limited | Method of making integrated circuits |
US5494857A (en) * | 1993-07-28 | 1996-02-27 | Digital Equipment Corporation | Chemical mechanical planarization of shallow trenches in semiconductor substrates |
FR2717306B1 (fr) * | 1994-03-11 | 1996-07-19 | Maryse Paoli | Procédé d'isolement de zones actives d'un substrat semi-conducteur par tranchées peu profondes, notamment étroites, et dispositif correspondant. |
US5665202A (en) * | 1995-11-24 | 1997-09-09 | Motorola, Inc. | Multi-step planarization process using polishing at two different pad pressures |
US5674783A (en) * | 1996-04-01 | 1997-10-07 | Taiwan Semiconductor Manufacturing Company, Ltd. | Method for improving the chemical-mechanical polish (CMP) uniformity of insulator layers |
US5770510A (en) * | 1996-12-09 | 1998-06-23 | Vanguard International Semiconductor Corporation | Method for manufacturing a capacitor using non-conformal dielectric |
US5702977A (en) * | 1997-03-03 | 1997-12-30 | Taiwan Semiconductor Manufacturing Company, Ltd. | Shallow trench isolation method employing self-aligned and planarized trench fill dielectric layer |
US5728621A (en) * | 1997-04-28 | 1998-03-17 | Chartered Semiconductor Manufacturing Pte Ltd | Method for shallow trench isolation |
-
1997
- 1997-09-30 US US08/940,650 patent/US5880007A/en not_active Expired - Lifetime
-
1998
- 1998-09-18 TW TW087115574A patent/TW392247B/zh not_active IP Right Cessation
- 1998-09-28 CN CN98119767A patent/CN1121716C/zh not_active Expired - Fee Related
- 1998-09-29 DE DE69836943T patent/DE69836943T2/de not_active Expired - Fee Related
- 1998-09-29 EP EP98307871A patent/EP0905756B1/en not_active Expired - Lifetime
- 1998-09-30 KR KR1019980040810A patent/KR100279016B1/ko not_active IP Right Cessation
- 1998-09-30 JP JP10278461A patent/JPH11162987A/ja active Pending
- 1998-11-06 US US09/187,165 patent/US6001740A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0341898A2 (en) * | 1988-05-12 | 1989-11-15 | Advanced Micro Devices, Inc. | Improved method of planarization of topologies in integrated circuit structures |
EP0407047A2 (en) * | 1989-07-03 | 1991-01-09 | Advanced Micro Devices, Inc. | Improved method of planarization of topologies in integrated circuit structures |
US5173439A (en) * | 1989-10-25 | 1992-12-22 | International Business Machines Corporation | Forming wide dielectric-filled isolation trenches in semi-conductors |
US5494854A (en) * | 1994-08-17 | 1996-02-27 | Texas Instruments Incorporated | Enhancement in throughput and planarity during CMP using a dielectric stack containing HDP-SiO2 films |
Also Published As
Publication number | Publication date |
---|---|
CN1226744A (zh) | 1999-08-25 |
JPH11162987A (ja) | 1999-06-18 |
KR100279016B1 (ko) | 2001-01-15 |
KR19990030306A (ko) | 1999-04-26 |
EP0905756A2 (en) | 1999-03-31 |
DE69836943T2 (de) | 2008-02-14 |
EP0905756A3 (en) | 2003-05-21 |
DE69836943D1 (de) | 2007-03-15 |
TW392247B (en) | 2000-06-01 |
US6001740A (en) | 1999-12-14 |
EP0905756B1 (en) | 2007-01-24 |
US5880007A (en) | 1999-03-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1121716C (zh) | 在制造集成电路过程中用于使非保形层平面化的方法 | |
CA2125465C (en) | Method of making integrated circuits | |
KR100621255B1 (ko) | 얕은트랜치분리를위한갭충전및평탄화방법 | |
KR101662218B1 (ko) | 다중 깊이 sti 방법 | |
CN1858898A (zh) | 浅渠沟隔离结构的制造方法以及半导体结构 | |
CN101064249A (zh) | 改进浅沟槽隔离间隙填充工艺的方法 | |
JP2838992B2 (ja) | 半導体装置の製造方法 | |
KR100432774B1 (ko) | 평탄화된표면을갖는반도체층구조제조방법 | |
CN1638087A (zh) | 半导体元件和隔离半导体元件的方法 | |
TW556270B (en) | eDRAM layer hard mask for eDRAM gate etch process | |
US7109091B2 (en) | Method for processing a substrate to form a structure | |
CN113725080B (zh) | 形成平坦化层的方法以及使用其的图案形成方法 | |
KR100451518B1 (ko) | 얕은 트렌치 소자분리 공정을 이용한 반도체 소자의소자분리방법 | |
CN1121718C (zh) | 用于在集成电路制造中形成亚基本图线尺寸图形的方法 | |
US12108593B2 (en) | Method for preparing semiconductor structure using a first mask comprises a groove | |
KR100273244B1 (ko) | 반도체소자의분리영역제조방법 | |
KR100312647B1 (ko) | 반도체 소자의 평탄화방법 | |
CN1254852C (zh) | 制作电绝缘层的方法 | |
KR100494121B1 (ko) | 반도체소자의평탄화방법 | |
KR100450569B1 (ko) | 반도체 소자의 층간 절연막 형성 방법 | |
KR100670696B1 (ko) | 반도체 소자의 캐패시터 형성방법 | |
KR100481981B1 (ko) | 반도체소자의층간절연막형성방법 | |
KR20020000441A (ko) | 이중 상감 방법을 이용한 반도체 소자의 금속배선 형성 방법 | |
KR20010004893A (ko) | 반도체 소자 제조 방법 | |
KR960015750A (ko) | 반도체소자 제조방법 |
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 | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030917 Termination date: 20160928 |