CN1659308A - 气体分配喷头 - Google Patents
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
Abstract
一种用于半导体制造工艺的气体分配喷头,其具有面板(316),该面板具有细长狭缝或通道形式的气体出口(318B)。按照本发明的实施例,细长气体出口的使用显著减少沉积材料的不期望的斑点形成(spotting)和条纹形成(streaking),其中喷头和晶片近距离间隔开。也公开了具有面板的喷头,而面板具有锥形轮廓,以减小在面板到晶片近间距下沉积材料的边缘厚度。
Description
技术领域
按照本发明的实施例一般涉及用于制造半导体器件的方法和装置,具体地涉及高温沉积工艺中采用的气体分配喷头。
背景技术
高温化学气相沉积(CVD)工艺广泛应用于半导体工业。图1A显示用于执行传统的高温化学气相沉积装置的简化剖视图。为了说明的目的,图1A-本申请的另一个图没有按比例显示。
装置100包括晶片支撑结构104,其设置在沉积腔室105内。在衬底加工过程中,晶片102可设置在支撑结构104上面。
气体分配喷头106定位在晶片102的上方,且和晶片102以间隙(gap)Y分开。对具体的应用,间隙Y的大小可通过调整晶片支撑结构104相对于喷头106的高度来控制。例如,在传统的未搀杂硅玻璃(USG)材料的沉积中,间隙Y可约大于300密耳。
气体分配喷头106包括工艺气体入口108,其与具有孔口(apertures)112的阻滞板(blocker plate)110间有流体传输。气体分配面板114定位在阻滞板110的下游。面板114从阻滞板110接收工艺气流,并将气体经孔(hole)116输送到晶片102。作为工艺气体流动的结果,沉积材料层118形成于晶片102上。
图1B显示图1A中传统气体分配面板114透视仰视图。面板114的孔116分布于面板表面上。图1B只显示孔116在面板上分布的一个例子,面板上的孔可有许多其它的布置。
再参考图1A,阻滞板110的作用是粗略地分配进入的工艺气流120于面板114的入口侧114a。面板114再分配气流以产生一致的,精细分配的气流,使晶片102暴露在该气流下。暴露于细分配的处理气流的结果是在晶片102上形成高质量的沉积材料层118。
显示于图1A-1B的传统高温沉积装置在半导体晶片表面上产生结构是有效的。由高温CVD形成的一种类型的结构是浅沟槽隔离(shallow trench isolation,STI)。图2显示晶片200放大的横截面图,该晶片200具有半导体结构202,如有源晶体管。临近有源半导体器件202与另一个器件由STI结构204电绝缘,该STI结构204包括注有介电材料,如未搀杂的硅玻璃(USG)的沟槽。
STI结构是通过掩模和蚀刻晶片暴露区域形成的,从而产生沟槽。掩模然后被除去,且应用高温工艺,沉积USG于晶片上,包括在沟槽内。沉积于沟槽外部的USG随后可通过蚀刻或化学机械抛光(CMP)而除去,以显露出最终的STI结构。
示于图1A-1B中的传统装置已成功应用于为STI和其它应用在高温时沉积材料,如USG。然而,期望对高温沉积装置的设计进行改进。例如,通过使喷头距晶片更近而获得更快的沉积速率是公知的。更快的沉积速率将提高沉积装置的产量,因此使得经营者能够更快地收回购买和维护设备的成本。
然而,晶片相对于喷头隔的更近可导致沉积的材料显示出不均匀的形貌,看起来就是在晶片上形成斑点和条纹。以近的晶片对喷头距离沉积的材料的形貌可反应孔在面板上位置。
图3A-3B是说明按照本发明实施例材料沉积的结果的照片。图3A是显示具有USG膜的晶片的照片,该膜是用传统的喷头沉积的,该喷头面板到晶片间距为75密耳。图3A中的晶片显示有明显的斑点和条纹。
图3B是显示具有USG膜的晶片的照片,该USG膜是用传统的喷头沉积的,该喷头面板到晶片间距为50密耳。图3B中的晶片比图3A中的晶片显示出的斑点和条纹更明显。
因此,期望获得允许在紧邻衬底表面处施加处理气体的方法和结构。
发明内容
半导体制造应用的气体分配喷头(gas distribution showerhead)包括具有气体出口(gas outlet port)的面板(face plate),该气体出口的形式为细长狭缝和通道,而不是独立的孔。按照本发明的实施例,使用细长气体出口显著减少沉积材料的不期望的斑点和条纹的出现,其中喷头与晶片近距离间隔开。也公开了为减小沉积材料的边缘厚度的具有锥形轮廓的喷头。
用于形成材料于半导体晶片上的装置的实施例包括由腔壁形成的处理腔室、处理气体源(gas supply)和定位在处理腔室内且被构造以接收半导体晶片的晶片支撑件。气体分配喷头位于晶片支撑件上方,并与气体分配喷头分隔开,气体分配喷头包括具有入口部分的面板,该入口部分包括孔,其与面板出口部分的细长狭缝输送气流,细长狭缝的长度至少是面板厚度的两倍。
按照本发明的实施例的气体分配面板的实施例包括具有一定厚度的面板主体。构造面板的入口部分以接收处理气流,该入口部分包括具有一定宽度的孔口。构造面板的出口部分以传送加工气流至半导体晶片,该出口部分包括细长狭缝,其与孔口进行气流传送,该细长狭缝的长度至少为面板主体厚度的两倍。
用于形成材料于半导体晶片上的装置,该装置包括由腔壁形成的处理腔室、处理气体源和晶片支撑件,该晶片支撑件定位在加工腔室内,且被构造以接收半导体晶片。气体分配喷头在晶片支撑件上方且包括锥形面板,该锥形面板临近晶片支撑件,该锥形面板边缘显示出相对于面板中心的厚度减小的厚度,以便沉积于晶片上的材料显示出从中心到边缘一致的厚度,该晶片和晶片支撑件接触。
在半导体制造工艺中分配气体的方法包括将气体从气体源流到气体分配面板的入口部分(inlet portion),该气体分配面板具有孔,而该孔有一定的宽度,和将气体从该孔通过气体分配面板的出口部分的细长狭缝流到半导体晶片的表面,该细长狭缝的长度至少为气体分配面板的厚度的两倍。
本发明的这些和其它的实施例,及其特征和某些潜在的优点将在下面结合说明书和附图详细说明。
附图说明
图1A是简化的传统高温沉积系统的剖视图。
图1B是图1A中系统的气体分配喷头的面板透视仰视图。
图2显示传统浅沟槽隔离结构的剖视图。
图3A显示具有USG膜的晶片的照片,该膜是用传统喷头在面板到晶片间距为75密耳的条件下沉积的。
图3B显示具有USG膜的晶片的照片,该膜是用传统喷头在面板到晶片间距为50密耳的条件下沉积的。
图4A是按照本发明的一个实施例简化的高温沉积系统的剖视图。
图4B是面板的一个实施例的俯视图,该面板用于按照本发明的气体分配喷头。
图4C是面板的一个实施例的底视图,该面板用于按照本发明的气体分配喷头。
图4D是图4A-4B中的面板放大的剖视图。
图5A是显示具有USG膜的晶片的照片,该膜是用按照本发明实施例的喷头在面板到晶片间距为75密耳的条件下沉积的。
图5B是显示具有USG膜的晶片的照片,该膜是用按照本发明实施例的喷头在面板到晶片间距为50密耳的条件下沉积的。
图6A是具有孔和细长狭缝的复合面板的平面图。
图6B是显示具有USG膜的晶片的照片,该膜是用具有复合孔/狭缝(composite hole/slot)结构的喷头在面板到晶片间距为75密耳的条件下沉积的。
图6C是显示具有USG膜的晶片的照片,该膜是用具有复合孔/狭缝结构的喷头在面板到晶片间距为50密耳的条件下沉积的。
图7A-7D是显示按照本发明可替换的实施例的面板的简化的平面图,该实施例的面板具有不同形式的细长狭缝。
图8绘出对于在不同温度和压力下的USG沉积中,沉积速率与面板到晶片间距之间关系的曲线图。
图9绘出沉积速率与较大范围的面板到晶片间距之间关系的曲线图。
图10绘出对于USG沉积工艺在不同温度和压力下,膜收缩百分数和湿蚀刻选择性与面板到晶片间距之间关系图。
图11A和11B显示浅沟槽隔离结构的横截面照片,该浅沟槽横截面结构是通过高温USG沉积形成的,该USG沉积分别使用传统的喷头和本发明的喷头进行。
图12绘出对于两个面板到晶片间距,计算出的增加的质量流量与距离晶片中心的距离之间关系的曲线图。
图13显示按照本发明的高温沉积系统的可替换的实施例的简化的剖视图。
图14绘出对于三个不同的面板到晶片间距,计算出的增加的质量流量与距离晶片中心的距离之间关系的曲线图。
具体实施方式
按照本发明的气体分配喷头的实施例包括具有气体出口的面板,该出口的形式为细长狭缝或沟道(channel)。按照本发明实施例使用细长气体出口,这显著减少在近面板到晶片间距的条件下沉积材料的不期望的斑点和条纹的形成。也公开了具有锥形轮廓以减少沉积材料的边缘厚度的喷头。
图4A显示按照本发明的化学气相沉积系统的一个实施例的简化的剖视图。装置300包括晶片302,该晶片和晶片支撑结构304接触且被设置在沉积腔室306内。气体分配喷头308定位在晶片302上方,且和晶片302以间隙Y’隔开。
气体分配喷头308包括工艺气体入口310,其与具有孔口314的阻滞板312进行气体传输。气体分配面板316具有主体315,该主体的厚度为Z,且定位在阻滞板312的下游。面板316从阻滞板312接收工艺气流,且通过主体315内的孔口318输送气体至晶片302。
为了说明整个沉积装置,图4A被简化以显示具有不变的横截面轮廓的孔口318。然而,转让给本申请的受让人的美国专利No.4854263公开了面板孔口的值,该面板孔口显示与气流方向相切的横截面的增加。
图4B是面板316的一个实施例的俯(气体入口)视图,该面板316用于按照本发明的气体分配喷头。图4C是面板316的一个实施例的仰(气体出口)视图,该面板316用于按照本发明的气体分配喷头。
如图4B所示,面板316的气体入口边316a,接收来自阻滞板的粗分布的工艺气流,其包括多个独立的直径为X的孔318a。如图4C所示,面板316的气体出口边316b,将细分布的工艺气体从面板传送到晶片,其包括多个连续的长度为L的细长狭缝318b。细长狭缝318b可从多于一个独立的孔318a接收气流。已经发现提供长度为L细长狭缝,使面板316能定位在晶片表面邻近处,而不会引起沉积材料显示出不期望的形貌特征,如斑点和条纹,其中狭缝长度L至少为面板316的厚度Z的一半。
图4D显示图4A-4C中面板的放大的剖视图。图4D显示,对于说明的具体实施例,气流入口部分上的孔318a的横截面宽度X比气流出口部分316b上的细长狭缝318b的横截面宽度X’明显的窄。本发明的实施例可利用X’/X的比值等于2.25或更大的细长面板狭缝。
图5A-5B是说明按照本发明实施例的材料沉积结果的照片。图5B是显示具有USG膜的晶片的照片,该USG膜是由按照本发明的实施例的喷头在面板到晶片间距为75密耳的条件下沉积的。图5A中的晶片显示出比用如图3A所示的传统喷头在间距相同时沉积的膜显示出明显少的斑点和条纹。
图5B是显示具有USG膜的晶片的照片,该USG膜是由按照本发明的实施例的喷头在面板到晶片间距为50密耳的条件下沉积的。图5B中的晶片显示出比用如图3B所示的传统喷头在相同间距下沉积的膜显著少的斑点和条纹。
在本发明的开发过程中,具有传统孔和细长狭缝开口的复合面板被用于沉积USG于晶片上。图6A显示该复合喷头450简化的平面图,其包括第一区域452,该区域包括传统孔454,也包括第二区域456,该区域包括按照本发明实施例的细长狭缝458。
图6B是显示具有USG膜的晶片的照片,该USG膜是由图6A中的复合喷头在面板到晶片间距为75密耳条件下沉积的。图6C是显示具有USG膜的晶片的照片,该USG膜是由具有复合孔/狭缝结构的喷头在面板到晶片间距为50密耳条件下沉积的。图6B和图6C揭示出通过细长狭缝沉积的材料402显示出比由复合面板的传统孔沉积的材料400更光滑的形貌。
虽然上面的图说明具有多个连续的,在出口边同心取向的狭缝的喷头,该特定结构不是本发明必须的。也可采用其它结构的细长狭缝,且此喷头将仍然在本发明的范围内。
图7A-7D显示按照本发明气体分配面板的多个可替换的实施例的出口部分的简化的仰视图,其中每个气体分配面板具有不同取向的细长狭缝。图7A中的面板出口部分660具有多个非连续狭缝662,它们沿圆周方向取向。图7B中的面板出口部分664具有多个非连续狭缝466,它们沿径向取向。图7C中的面板出口部分668具有多个非连续狭缝670,它们独特地采取即不同心,也不在径向取向的方式排布。图7D中的面板出口部分672具有多个非连续狭缝674,其与传统孔676组合。
按照本发明的装置和方法的实施例提供了许多好处。例如,图8绘出在不同温度下,USG沉积工艺中沉积速率与面板到晶片间距之间关系的曲线图。图8显示发生在510℃或540℃的沉积工艺,面板到晶片间距的减小导致沉积速率的增加。在更近的面板到晶片间距下,该关系更突出。
图9绘出USG沉积速率对更广泛的面板到晶片间距范围(50-25密耳)。图9表明在更近的间距下,USG沉积速率的增加,也表明在间距更近的条件下,对沉积速率的影响。
图10绘出在不同的温度和压力下,对USG沉积工艺,膜收缩百分数和湿蚀刻选择性与面板到晶片间距之间的关系图。图10表明当在近面板到晶片间距时,在510℃和540℃沉积的USG膜显示出低收缩率。此数据表明在近间距下,形成密度更高,质量更高的膜。
图10中的湿蚀刻数据和在近面板到晶片间距下沉积的质量改进的沉积层这一发现相关。特别地,在近面板到晶片间距时沉积的USG膜显示了湿蚀刻选择性和更高密度的一致性。
图11A和11B显示浅沟槽绝缘结构横截面的照片,该结构是通过应用按照本发明的喷头高温USG沉积形成的。图11A和11B显示的USG沉积工艺发生在510℃,面板到晶片间距为75密耳。照片显示出在1050℃,沉积后(post-deposition)退火60分钟的USG填充的浅沟槽结构。图11A和11B显示出由按照本发明实施例的工艺获得的间隙填充的质量与采用传统面板设计的工艺所获得质量是可比的。
虽然到目前为止,本发明是结合用在高温沉积未搀杂硅玻璃中的含硅前体气体进行说明的,本发明不局限于这个具体实施例。按照本发明的实施例的喷头可用于分配品种广泛的气体,这些气体在半导体制造工艺的阵列中有用的,此半导体制造工艺包括但不局限于搀杂氧化硅的化学气相沉积,这些氧化硅的形式为磷硅酸盐玻璃(PSG)、硼硅酸盐玻璃(BSG)或硼磷硅酸盐玻璃(BPSG)。
可使用按照本发明的实施例的喷头分配气体的例子包括,但不局限于四乙基正硅烷(TEOS)、磷酸三乙酯(TEPO)和硼酸三乙酯(TEB)。本发明不局限于分配前体气体流,也可用于输送载体气如氦气和氮气等不直接参与CVD反应的气体。
按照本发明实施例的喷头也可用于输送前体气体以便非氧化硅材料的形成,这些材料包括但不局限于金属,氮化物和氮氧化物。并且虽然上面是结合高温CVD工艺说明该喷头的,按照本发明实施例的实施例可用于在其它类型的CVD工艺中输送气体,如等离子体增强化学气相沉积(PECVD)工艺或准常压化学气相沉积(SACVD)工艺。
按照本发明的实施例也不局限于和化学气相沉积工艺结合使用。按照本发明的喷头也可用来在其它类型半导体制造工艺中输送气体,如干蚀刻工艺或等离子体蚀刻工艺。
按照本发明的实施例也不局限于使用具有狭缝的喷头面板。参考图4A,喷头308相对晶片302近间距的一个结果是在晶片边缘向下的工艺气流增加。晶片边缘的质量流量的增加引起沉积的材料320边缘的厚度320a增加。
图12绘出对于两个面板到晶片间距,计算出的增加的质量流量与距离晶片中心的距离之间的关系曲线。在0.270英寸的传统宽面板到晶片间距下,沉积增加的质量流量从晶片中心到边缘相对一致。然而,在0.075英寸的更窄的面板到晶片间距下,该工艺显示出有显著增加的质量流量流到晶片外围区域。此增加的质量流量产生沉积材料层,该沉积材料层边缘厚度明显比中心厚度厚。
因此,本发明的喷头可替换实施例可使用具有锥形轮廓的面板以避免近面板到晶片间距条件下,沉积材料在边缘处厚度的增加。图13显示按照本发明的高温沉积系统可替换实施例的简化的剖视图。装置900包括晶片902,其与晶片支撑结构904接触,且定位在沉积腔室906内。气体分配喷头908定位在晶片902上方,且与晶片902以间隙Y”分隔开。
气体分配喷头908包括工艺气体入口912,其与具有孔口916的阻滞板914进行流体传输。气体分配面板918位于阻滞板914的下游,面板918接收来自阻滞板914的工艺气流,并且通过孔920将气体输送到晶片902。
如上结合图4A所述,面板相对晶片的近间距可导致到晶片边缘的气流质量的增加。因此,图13所示的实施例包括具有锥形轮廓的面板918。特别地,面板918的边缘部分918a相对于面板918的中心部分918b凹进。圆锥角A代表由面板中心到边缘的厚度差定义的角,并且该角大小约在0.5°到5°。
使用气体分配喷头,使得在近面板到晶片间距时沉积的材料具有改进的厚度一致性。表A比较锥形面板和平面面板在100密耳和75密耳的间距时沉积的材料,沉积速率,厚度一致性,和厚度范围。
表A
间隙距离(密耳) | 锥形面板 | 平面面板 | ||||
沉积速率(/min) | 1σ一致性 | 范围 | 沉积速率(/min) | 1σ一致性 | 范围 | |
75 | 1950 | 7.3 | 12.7 | 2000 | 13.4 | 20.5 |
100 | 1600 | 4.6 | 7.6 | 1890 | 8.7 | 13.3 |
表A显示出利用锥形面板沉积导致材料层的形成具有更一致的中心到边缘厚度。虽然收集在表A中的数据反应利用锥形面板和平面面板的沉积,该平面面板具有细长狭缝,按照本发明实施例的锥形面板不必具有细长狭缝。
图14绘出对三个不同的面板轮廓,计算出的增加的质量流量与距晶片中心的距离之间的关系图。图14显示通过分别将间隙逐渐减小0.025英寸和0.050英寸,在整个晶片上增加的质量的峰谷变化分别减少35%和46%。按照本发明实施例的锥形面板结构的使用,可导致材料层的沉积显示出中心到边缘厚度的变化为800埃()或更小。
这里只显示和说明了本发明某些实施例。应该明白本发明能使用在多种其它组合和环境中,并且能够在本发明此处公开的范畴内变化和修改。例如,按照本发明实施例的装置和方法不局限于加工任何尺寸的半导体晶片,并且对涉及直径为200毫米的晶片,直径为300毫米的晶片或其它形状和尺寸的半导体晶片制造工艺都有用。
虽然这里详细描述了本发明和多个实施例,这些等价的和可替换的方式和可理解的显然的变化和修改应包括在本发明的范围内。
Claims (29)
1.一种用于在半导体晶片上形成材料的装置,该装置包括:
由腔壁形成的处理腔室;
定位在所述处理腔室内的晶片支撑件,构造所述晶片支撑件以接收半导体晶片;
处理气体源;和
气体分配喷头,其在所述晶片支撑件上方并且与所述晶片支撑件分开,所述气体分配喷头包括具有入口部分的面板,该入口部分包括孔,其与所述面板的出口部分的细长狭缝进行流体传输。
2.根据权利要求1所述的装置,其中所述细长狭缝的长度至少为所述面板厚度的一半。
3.根据权利要求1所述的装置,其中所述气体分配喷头进一步包括阻滞板,所述阻滞板包括穿孔,所述阻滞板定位在所述面板的所述入口部分的上游,且与其进行流体传输。
4.根据权利要求1所述的装置,其中所述细长狭缝是连续的并且为通信取向的。
5.根据权利要求1所述的装置,其中所述细长狭缝的横截面的宽度大于所述孔的横截面宽度。
6.根据权利要求5所述的装置,其中所述细长狭缝的横截面宽度至少比所述孔的横截面宽度大2.25倍。
7.一种气体分配面板,其包括:
面板主体,其具有一定厚度;
入口部分,其被构造以接收处理气流,所述入口部分包括具有一定宽度的孔口;
出口部分,其被构造以将处理气流传送至半导体晶片,所述出口部分包括细长狭缝,其与所述孔口进行流体传输。
8.根据权利要求7所述的气体分配面板,其中所述细长狭缝的长度至少为所述面板主体的厚度的一半。
9.根据权利要求7所述的气体分配面板,其中所述细长狭缝是环形的且为连续的。
10.根据权利要求7所述的气体分配面板,其中所述细长狭缝的宽度大于所述孔口的宽度。
11.根据权利要求10所述的气体分配面板,其中所述细长狭缝的宽度至少比所述孔口的宽度大2.25倍。
12.一种用于在半导体晶片上形成材料的装置,所述装置包括:
由腔壁定义的处理腔室;
定位在所述处理腔室内的晶片支撑件,构造所述晶片支撑以接收半导体晶片;
处理气体源;和
气体分配喷头,其在所述晶片支撑件上方并且包括锥形面板,该面板邻近所述晶片支撑件,所述锥形面板的边缘显示出相对于所述面板的中心厚度减小的厚度,从而产生一锥形角,以便沉积于晶片上的材料与所述晶片支撑件接触,以显示出一致的中心到边缘厚度。
13.根据权利要求12所述的装置,其中所述锥形角约在0.5°和5°之间。
14.根据权利要求12所述的装置,其中所述锥形面板包括:
入口部分,其被构造以接收处理气流,所述入口部分包括具有一定宽度的孔口;
出口部分,其被构造以传送所述处理气流至半导体晶片,所述出口部分包括细长狭缝,其与所述孔口进行流体传输。
15.根据权利要求14所述的装置,其中所述细长狭缝的长度至少为所述面板厚度的一半。
16.根据权利要求14所述的装置,其中所述细长狭缝是环形的并且为连续的。
17.根据权利要求14所述的装置,其中所述细长狭缝宽度大于所述孔口的宽度。
18.根据权利要求17所述的装置,其中所述细长狭缝的宽度至少比所述孔口的宽度大2.25倍。
19.一种在半导体制造工艺过程中分配气体的方法,其包括:
从气源输送气体至气体分配面板的入口部分,所述气体分配面板包括具有一定宽度的孔;以及
通过所述气体分配面板的出口部分的细长狭缝,从所述孔输送所述气体至半导体晶片表面。
20.根据权利要求19所述的方法,其中所述气体是通过细长狭缝输送的,所述细长狭缝的长度至少为所述气体分配面板厚度的一半。
21.根据权利要求19所述的方法,其中至少一种载体气和一种工艺气体通过所述面板输送。
22.根据权利要求19所述的方法,其中所述气体是在化学气相沉积工艺中输送的。
23.根据权利要求19所述的方法,其中所述气体是在未搀杂硅玻璃的高温沉积工艺中输送的,以便所述面板和所述晶片之间的间距为300密耳或更小。
24.根据权利要求19所述的方法,其中所述被输送的气体选自由四乙基正硅烷、磷酸三乙酯、硼酸三乙酯、臭氧、氧气、氦气和氮气组成的组中一种。
25.根据权利要求19所述的方法,其中所述被输送的气体导致选自由硼硅酸盐玻璃、磷硅酸盐玻璃或硼磷硅酸盐玻璃组成的组中的材料的沉积。
26.根据权利要求19所述的方法,其中所述气体是从所述气体分配面板输送的,所述气体分配面板相对于中心部分凹进,从而产生0.5°到5°之间的面板锥形角。
27.根据权利要求19所述的方法,其中所述气体是在干蚀刻工艺中输送的。
28.一种用于在半导体晶片上形成材料的装置,所述装置包括:
由腔壁定义的处理腔室;
定位在所述处理腔室内的晶片支撑件,其被构造以接收半导体晶片;
处理气体源;和
气体分配喷头,其在所述晶片支撑件上方并且包括锥形面板,所述面板邻近所述晶片支撑件,所述锥形面板包括,
入口部分,其被构造以接收处理气流,所述入口部分包括具有一定宽度的孔口;以及
出口部分,其被构造以传送处理气流至半导体晶片,所述出口部分包括细长狭缝,其与所述孔口进行流体传输。
其中所述锥形面板的边缘显示出相对于所述面板中心的厚度减小的厚度,从而产生锥形角,以便沉积于晶片上的材料与所述晶片支撑件接触,以显示出一致的中心到边缘的厚度。
29.根据权利要求28所述装置,其中所述锥形角在0.5°和5°之间。
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Also Published As
Publication number | Publication date |
---|---|
JP4426306B2 (ja) | 2010-03-03 |
TWI283437B (en) | 2007-07-01 |
TW200302510A (en) | 2003-08-01 |
US6793733B2 (en) | 2004-09-21 |
US20030140851A1 (en) | 2003-07-31 |
JP2005516407A (ja) | 2005-06-02 |
WO2003064725A1 (en) | 2003-08-07 |
KR100993037B1 (ko) | 2010-11-08 |
CN100342057C (zh) | 2007-10-10 |
KR20040085164A (ko) | 2004-10-07 |
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