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    • 62. 发明授权
    • Method of providing a silicon film having a roughened outer surface
    • 提供具有粗糙化外表面的硅膜的方法
    • US5320880A
    • 1994-06-14
    • US155585
    • 1993-11-18
    • Gurtej S. SandhuTrung T. Doan
    • Gurtej S. SandhuTrung T. Doan
    • C23C16/24C23C16/505H01L21/02H01L21/205B05D3/06B05D3/02C23C16/00
    • H01L28/84C23C16/24C23C16/505H01L21/02381H01L21/02532H01L21/0262
    • A method of providing a silicon film having a roughened outer surface atop a semiconductor wafer comprises: a) placing a semiconductor wafer into a plasma enhanced RF powered chemical vapor deposition reactor; and b) plasma enhanced chemical vapor depositing a layer of silicon over the wafer surface by providing quantities of a silicon source gas, a carrier gas, and TiCl.sub.4 to the reactor, the atomic ratio of the quantities of silicon source gas and TiCl.sub.4 being greater than or equal to 4 at the wafer surface; and by maintaining the reactor at a selected RF power, pressure and temperature; the RF power being supplied at a frequency of at least 5 MHz and preferably at least 10 MHz, the quantities of silicon source gas, RF power, temperature and pressure being effective to produce a predominately silicon film having an outer surface, the quantity of TiCl.sub.4 being effective to induce roughness into the outer silicon surface as compared to an outer silicon surface prepared under identical conditions but for introduction of TiCl.sub.4 but ineffective to produce a predominately titanium silicide film.
    • 提供在半导体晶片顶部具有粗糙化的外表面的硅膜的方法包括:a)将半导体晶片放置在等离子体增强的RF功率化学气相沉积反应器中; 和b)通过向反应器提供大量的硅源气体,载气和TiCl 4,等离子体增强化学气相沉积在晶片表面上的硅层,硅源气体和TiCl 4的量的原子比大于 或在晶片表面等于4; 并通过将反应器维持在选定的RF功率,压力和温度; RF功率以至少5MHz,优选至少10MHz的频率提供,硅源气体的量,RF功率,温度和压力有效地产生主要具有外表面的硅膜,TiCl 4的量 与在相同条件下制备的但用于引入TiCl 4但不能产生主要的硅化钛膜的外硅表面相比,有效地将粗糙度引入外硅表面。
    • 63. 发明授权
    • Chemical vapor deposition technique for depositing titanium silicide on
semiconductor wafers
    • 用于在半导体晶片上沉积硅化钛的化学气相沉积技术
    • US5278100A
    • 1994-01-11
    • US789585
    • 1991-11-08
    • Trung T. DoanGurtej S. Sandhu
    • Trung T. DoanGurtej S. Sandhu
    • H01L21/205H01L21/28H01L21/285H01L21/768H01L21/441
    • H01L21/76855H01L21/285H01L21/28518H01L21/76843H01L21/76877Y10S148/147
    • A method of providing a conformal layer of TiSi.sub.x atop a semiconductor wafer within a chemical vapor deposition reactor includes the following steps: a) positioning a wafer within the reactor; b) injecting selected quantities of gaseous Ti(NR.sub.2).sub.4 precursor, gaseous silane and a carrier gas to within the reactor, where R is selected from the group consisting of H and a carbon containing radical, the quantities of Ti(NR.sub.2).sub.4 precursor and silane being provided in a volumetric ratio of Ti(NR.sub.2).sub.4 to silane of from 1:300 to 1:10, the quantity of carrier gas being from about 50 sccm to about 2000 sccm and comprising at least one noble gas; and c) maintaining the reactor at a selected pressure and a selected temperature which are effective for reacting the precursor and silane to deposit a film on the wafer, the film comprising a mixture of TiSi.sub.x and TiN, the selected temperature being from about 100.degree. C. to about 500.degree. C., and the selected pressure being from about 150 mTorr to about 100 Torr.
    • 在化学气相沉积反应器内提供半导体晶片顶部的TiSix共形层的方法包括以下步骤:a)将晶片定位在反应器内; b)将选定量的气态Ti(NR 2)4前体,气态硅烷和载气注入反应器内,其中R选自H和含碳基团,Ti(NR 2)4前体的量 硅烷以Ti(NR 2)4与硅烷的体积比为1:300至1:10,载气量为约50sccm至约2000sccm并包含至少一种惰性气体; 以及c)将所述反应器保持在选择的压力和所选择的温度下,所述选择的温度对于使所述前体和硅烷反应以在所述晶片上沉积膜是有效的,所述膜包含TiSix和TiN的混合物,所述选定温度为约100℃ 至约500℃,并且所选择的压力为约150mTorr至约100Torr。
    • 66. 发明授权
    • Method of semiconductor manufacture using an inverse self-aligned mask
    • 使用逆自对准掩模的半导体制造方法
    • US5132236A
    • 1992-07-21
    • US738175
    • 1991-07-30
    • Trung T. Doan
    • Trung T. Doan
    • H01L21/033H01L21/266H01L21/8238
    • H01L21/266H01L21/0337H01L21/8238Y10S148/102
    • A process for fabricating a CMOS integrated circuit having both P-channel and N-channel areas in the substrate. The process forms a single self-aligned mask to define the positions of both of the channel areas on the substrate. The process includes: depositing a maskable material on the substrate; photopatterning and etching the maskable material to expose a pattern of areas on the substrate; tailoring the pattern of areas as P-channel or N-channel; depositing a second material over the maskable material and over the tailored areas of the substrate; chemically mechanically polishing (CMP) the second material to an endpoint of the maskable material; selectively etching the maskable material to expose a second pattern of areas on the substrate aligned with the first pattern of areas; and then tailoring the second pattern of areas as P-channel or N-channel.
    • 一种用于制造在衬底中具有P沟道和N沟道区域的CMOS集成电路的工艺。 该过程形成单个自对准掩模以限定衬底上两个通道区域的位置。 该方法包括:将可屏蔽材料沉积在基底上; 照相图案化和蚀刻可屏蔽材料以暴露衬底上的区域图案; 将区域的图案定制为P通道或N通道; 将第二材料沉积在所述可屏蔽材料上方和所述基材的所述定制区域上; 将第二材料化学机械抛光(CMP)到可屏蔽材料的端点; 选择性地蚀刻可屏蔽材料以暴露与第一图案区域对准的衬底上的第二图案区域; 然后将第二种区域划分为P信道或N信道。
    • 69. 发明授权
    • Method for an integrated circuit contact
    • 集成电路接触方法
    • US07871934B2
    • 2011-01-18
    • US11841906
    • 2007-08-20
    • Charles H. DennisonTrung T. Doan
    • Charles H. DennisonTrung T. Doan
    • H01L21/311
    • H01L21/31144H01L21/76807H01L21/76808H01L21/76829Y10S438/95Y10S438/97
    • A process is provided for forming vertical contacts in the manufacture of integrated circuits and devices. The process eliminates the need for precise mask alignment and allows the etch of the contact hole to be controlled independent of the etch of the interconnect trough. The process includes the steps of: forming an insulating layer on the surface of a substrate; forming an etch stop layer on the surface of the insulating layer; forming an opening in the etch stop layer; etching to a first depth through the opening in the etch stop layer and into the insulating layer to form an interconnect trough; forming a photoresist mask on the surface of the etch stop layer and in the trough; and continuing to etch through the insulating layer until reaching the surface of the substrate to form a contact hole. The above process may be repeated one or more times during the formation of multilevel metal integrated circuits.
    • 在集成电路和器件的制造中提供用于形成垂直触点的工艺。 该过程消除了对精确掩模对准的需要,并允许独立于互连槽的蚀刻来控制接触孔的蚀刻。 该方法包括以下步骤:在衬底的表面上形成绝缘层; 在绝缘层的表面上形成蚀刻停止层; 在蚀刻停止层中形成开口; 蚀刻到穿过蚀刻停止层中的开口的第一深度并进入绝缘层以形成互连槽; 在蚀刻停止层和槽中的表面上形成光致抗蚀剂掩模; 并且继续蚀刻通过绝缘层直到到达衬底的表面以形成接触孔。 在形成多级金属集成电路期间,可以重复上述过程一次或多次。