摘要:
A method for forming contact holes using a partially recessed hard mask. A substrate with a device region and an alignment region having an opening therein, acting as an alignment mark, is provided. A dielectric layer is formed overlying the substrate and fills the opening. A polysilicon layer is formed on the dielectric layer, with over the opening on the alignment region comprising a recessed region and on the device region comprising a plurality of holes therein to expose the underlying dielectric layer. The exposed dielectric layer on the device region is etched to form contact holes therein.
摘要:
A manufacturing method for a MOSFET gate structure. The method comprises providing a substrate, sequentially depositing a pad layer and a dielectric layer thereon, defining a gate trench passing through the dielectric layer and the pad layer to expose a predetermined gate area of the substrate, sequentially forming a gate dielectric layer, a first conductive layer, a second conductive layer, and a cap layer on the exposed substrate in the gate trench to form a damascene gate structure, and removing the dielectric layer.
摘要:
A method for forming contact holes using a multi-layer hard mask. A substrate with a device region and an alignment region having an opening therein to serve as an alignment mark is provided. A dielectric layer is formed overlying the substrate and fills the opening, followed by the multi-layer hard mask. The multi-layer hard mask over the opening is partially removed and that on the device region is patterned to form a plurality of holes therein and expose the underlying dielectric layer. The exposed dielectric layer on the device region is etched to form the plurality of contact holes therein.
摘要:
A method of forming a metal plug. First, a dielectric layer is formed on a substrate. Next, a patterned hard mask is formed on the dielectric layer. The dielectric layer is etched through the patterned hard mask to form a contact hole in the dielectric layer so as to expose parts of the substrate. An isolated layer is formed on the patterned hard mask. A barrier is then formed conformally on the isolated layer and the exposed substrate of the contact hole. A metal layer is formed to fill the contact hole and cover the barrier. A thermal treatment is performed to form a silicide between the barrier layer and the substrate. Finally, parts of the metal layer, barrier, isolated layer, and patterned hard mask are removed. The metal plug with a planar surface is thus formed in the contact hole.
摘要:
A method of forming a bit line contact hole. After transistors are formed on a substrate, a polysilicon layer conformally covers the transistors and the substrate. The polysilicon layer is defined to form an inner landing pad connecting with a doped region. A passivation layer is formed on the inner landing pad, the transistor and the substrate. An insulating layer with a flat surface is then formed on the passivation layer. A contact opening is formed in the insulating layer and the passivation layer to expose the inner landing pad. M0 etching forms a recess of interconnecting landing pad pattern in the upper portion of the contact opening. M0 deposition is then performed. The formed bit line contact structure comprises a bottom layer of a polysilicon inner landing pad, a contact plug and a top layer of an interconnected landing pad.
摘要:
A bit line contact structure and method for forming the same. After forming transistors on a substrate, Ti layer, TiN layer and W layer conformally cover the transistors and the substrate. The Ti/TiN/W stacked layer is defined to form an inner landing pad connecting to a source/drain region. A passivation layer is formed on the inner landing pad, the transistors and the substrate. An insulating layer with a flat surface is then formed on the passivation layer. A contact hole is formed in the insulating layer and the passivation layer to expose the inner landing pad. A M0 etching process is performed to form a recess of interconnecting landing pad patterns in the upper portion of the contact hole. An M0 deposition process is then performed.
摘要翻译:一种位线接触结构及其形成方法。 在衬底上形成晶体管之后,Ti层,TiN层和W层共形覆盖晶体管和衬底。 Ti / TiN / W堆叠层被限定为形成连接到源极/漏极区域的内部着陆焊盘。 在内部着陆板,晶体管和基板上形成钝化层。 然后在钝化层上形成具有平坦表面的绝缘层。 在绝缘层和钝化层中形成接触孔以暴露内部着陆焊盘。 执行M0蚀刻工艺以在接触孔的上部形成互连着陆焊盘图案的凹部。 然后执行M0沉积工艺。
摘要:
A method for evaluating reticle registration between two reticle patterns. A wafer is defined and etched to form a first exposure pattern, by photolithography with a first reticle having a first reticle pattern thereon. A photoresist layer is formed over the wafer and defined as a second exposure pattern, by photolithography with a second reticle having a second reticle pattern thereon. A deviation value between the first and second exposure patterns is measured by a CD-SEM. The deviation value is calibrated according to the scaling degree and the overlay offset to obtain a registration data. The reticle registration between the two reticle patterns is evaluated based on the registration data.