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    • 41. 发明授权
    • Methods of forming dielectric layers and methods of forming capacitors
    • 形成电介质层的方法和形成电容器的方法
    • US06319856B1
    • 2001-11-20
    • US09670984
    • 2000-09-26
    • Garo J. DerderianGurtej S. Sandhu
    • Garo J. DerderianGurtej S. Sandhu
    • H01L2131
    • H01L21/31604C23C16/30C23C16/4405H01L21/31629H01L21/31691
    • Methods of forming dielectric layers and methods of forming capacitors are described. In one embodiment, a substrate is placed within a chemical vapor deposition reactor. In the presence of activated fluorine, a dielectric layer is chemical vapor deposited over the substrate and comprises fluorine from the activated fluorine. In another embodiment, a fluorine-comprising material is formed over at least a portion of an internal surface of the reactor. Subsequently, a dielectric layer is chemical vapor deposited over the substrate. During deposition, at least some of the fluorine-comprising material is dislodged from the surface portion and incorporated in the dielectric layer. In another embodiment, the internal surface of the reactor is treated with a gas plasma generated from a source gas comprising fluorine, sufficient to leave some residual fluorine thereover. Subsequently, a substrate is exposed within the reactor to chemical vapor deposition conditions which are effective to form a dielectric layer thereover comprising fluorine from the residual fluorine.
    • 描述形成电介质层的方法和形成电容器的方法。 在一个实施例中,将衬底放置在化学气相沉积反应器内。 在活性氟的存在下,电介质层被化学气相沉积在衬底上并且包含来自活性氟的氟。 在另一个实施方案中,在反应器的内表面的至少一部分上形成含氟材料。 随后,介电层被化学气相沉积在衬底上。 在沉积期间,至少一些含氟材料从表面部分移出并且被并入电介质层中。 在另一个实施方案中,反应器的内表面用从包含氟的源气体产生的气体等离子体处理,足以在其上留下一些残留的氟。 随后,将基板在反应器内暴露于化学气相沉积条件,这些条件有效地形成介电层,其中包含来自残余氟的氟。
    • 46. 发明授权
    • Atomic layer deposition methods, and methods of forming materials over semiconductor substrates
    • 原子层沉积方法以及在半导体衬底上形成材料的方法
    • US07312163B2
    • 2007-12-25
    • US10671922
    • 2003-09-24
    • Garo J. DerderianGurtej S. Sandhu
    • Garo J. DerderianGurtej S. Sandhu
    • H01L21/44H01L21/469
    • C23C16/45536C23C16/44H01L21/28562
    • The invention includes methods in which at least two different precursors are flowed into a reaction chamber at different and substantially non-overlapping times relative to one another to form a material over at least a portion of a substrate, and in which at least one of the precursors is asymmetric with respect to a physical property. A field influencing the asymmetric physical property is oriented within the reaction chamber, and is utilized to affect alignment of the precursor having the asymmetric property as the material is formed. The asymmetric physical property can, for example, be an anisotropic charge distribution associated with the precursor, and in such aspect, the field utilized to influence the asymmetric physical property can be an electric field provided within the reaction chamber and/or a magnetic field provided within the reaction chamber. The methodology of the present invention can be utilized in atomic layer deposition processes.
    • 本发明包括这样的方法,其中至少两种不同的前体相对于彼此以不同的和基本上不重叠的时间流动到反应室中,以在衬底的至少一部分上形成材料,并且其中至少一个 前体在物理性质方面是不对称的。 影响不对称物理性质的场定向在反应室内,并且用于影响形成材料时具有不对称性质的前体的取向。 不对称物理性质可以是例如与前体相关的各向异性电荷分布,在这种方面,用于影响不对称物理性质的场可以是在反应室内提供的电场和/或提供的磁场 在反应室内。 本发明的方法可用于原子层沉积工艺。
    • 48. 发明授权
    • Capacitor constructions having a conductive layer
    • 具有导电层的电容器结构
    • US07109542B2
    • 2006-09-19
    • US09879231
    • 2001-06-11
    • Garo J. DerderianGurtej S. Sandhu
    • Garo J. DerderianGurtej S. Sandhu
    • H01L27/108
    • H01L28/56H01L21/02178H01L21/02181H01L21/02183H01L21/02189H01L21/02197H01L21/0228H01L21/02304H01L21/28568H01L21/31604H01L28/75H01L28/84
    • A capacitor fabrication method may include atomic layer depositing a conductive barrier layer to oxygen diffusion over the first electrode. A method may instead include chemisorbing a layer of a first precursor at least one monolayer thick over the first electrode and chemisorbing a layer of a second precursor at least one monolayer thick on the first precursor layer, a chemisorption product of the first and second precursor layers being comprised by a layer of a conductive barrier material. The barrier layer may be sufficiently thick and dense to reduce oxidation of the first electrode by oxygen diffusion from over the barrier layer. An alternative method may include forming a first capacitor electrode over a substrate, the first electrode having an inner surface area per unit area and an outer surface area per unit area that are both greater than an outer surface area per unit area of the substrate. A capacitor dielectric layer and a second capacitor electrode may be formed over the dielectric layer. The method may further include forming rugged polysilicon over the substrate, the first electrode being over the rugged polysilicon. Accordingly, the outer surface area of the first electrode can be at least 30% greater than the outer surface area of the substrate without the first electrode including polysilicon.
    • 电容器制造方法可以包括在第一电极上的氧扩散的原子层沉积导电阻挡层。 一种方法可以包括在第一电极上化学吸附至少一层单层的第一前体层,并化学吸附第一前体层上至少一层单层的第二前体层,第一和第二前体层的化学吸附产物 由导电阻挡材料层组成。 阻挡层可以是足够厚且致密的,以通过从阻挡层上方的氧扩散来减少第一电极的氧化。 替代方法可以包括在衬底上形成第一电容器电极,第一电极具有每单位面积的内表面积和每单位面积的外表面积,其大于衬底每单位面积的外表面积。 可以在电介质层上形成电容器电介质层和第二电容器电极。 该方法还可以包括在衬底上形成坚固的多晶硅,第一电极在坚固的多晶硅之上。 因此,第一电极的外表面积可以比不含第一电极包括多晶硅的衬底的外表面积大至少30%。