摘要:
A method for manufacturing a semiconductor device, comprising forming a first gate stack portion on a substrate, the first gate stack portion including a first gate oxide layer and a first polysilicon layer on the first gate oxide layer, forming a second gate stack portion on the substrate, the second gate stack portion including a second gate oxide layer and a second polysilicon layer on the second gate oxide layer, forming a resistor portion on the substrate, the resistor portion including a third gate oxide layer and a third polysilicon layer on the third gate oxide layer, covering the resistor portion with a photoresist, removing respective first portions of the first and second polysilicon layers from the first and second gate stack portions, removing the photoresist from the resistor portion, and after removing the photoresist from the resistor portion, removing respective remaining portions of the first and second polysilicon layers from the first and second gate stack portions.
摘要:
A method for manufacturing a semiconductor device, comprising forming a first gate stack portion on a surface of a substrate, the first gate stack portion including a first gate oxide layer and a first polysilicon layer on the first gate oxide layer, forming a second gate stack portion on the surface of the substrate, the second gate stack portion including a second gate oxide layer and a second polysilicon layer on the second gate oxide layer, forming a resistor portion in a recessed portion of the substrate below the surface of the substrate, the resistor portion including a third polysilicon layer, and removing the first and second polysilicon layers from the first and second gate stack portions to expose the first and second gate oxide layers, wherein at least one of a dielectric layer and a stress liner cover a top surface of the resistor portion during removal of the first and second polysilicon layers.
摘要:
Semiconductor devices with replacement gate electrodes are formed with different materials in the work function layers. Embodiments include forming first and second removable gates on a substrate, forming first and second pairs of spacers on opposite sides of the first and second removable gates, respectively, forming a hardmask layer over the second removable gate, removing the first removable gate, forming a first cavity between the first pair of spacers, forming a first work function material in the first cavity, removing the hardmask layer and the second removable gate, forming a second cavity between the second pair of spacers, and forming a second work function material, different from the first work function material, in the second cavity.
摘要:
A method for manufacturing a semiconductor device, comprising forming a metal gate of a transistor on a substrate by a replacement metal gate process, wherein an insulating layer is formed on the substrate adjacent the metal gate, forming a hard mask on the substrate including the insulating layer and the metal gate, the hard mask including an opening exposing the metal gate, performing a metal pull back process on the substrate to remove a predetermined depth of a top portion of the metal gate, depositing a protective layer on the substrate, including on the hard mask and on top of a remaining portion of the metal gate, and performing chemical mechanical polishing to remove the hard mask and the protective layer, wherein the protective layer formed on top of the remaining portion of the metal gate remains.
摘要:
A method for manufacturing a semiconductor device, comprising forming a first gate stack portion on a substrate, the first gate stack portion including a first gate oxide layer and a first polysilicon layer on the first gate oxide layer, forming a second gate stack portion on the substrate, the second gate stack portion including a second gate oxide layer and a second polysilicon layer on the second gate oxide layer, forming a resistor portion on the substrate, the resistor portion including a third gate oxide layer and a third polysilicon layer on the third gate oxide layer, covering the resistor portion with a photoresist, removing respective first portions of the first and second polysilicon layers from the first and second gate stack portions, removing the photoresist from the resistor portion, and after removing the photoresist from the resistor portion, removing respective remaining portions of the first and second polysilicon layers from the first and second gate stack portions.
摘要:
A method for manufacturing a semiconductor device, comprising forming a metal gate of a transistor on a substrate by a replacement metal gate process, wherein an insulating layer is formed on the substrate adjacent the metal gate, forming a hard mask on the substrate including the insulating layer and the metal gate, the hard mask including an opening exposing the metal gate, performing a metal pull back process on the substrate to remove a predetermined depth of a top portion of the metal gate, depositing a protective layer on the substrate, including on the hard mask and on top of a remaining portion of the metal gate, and performing chemical mechanical polishing to remove the hard mask and the protective layer, wherein the protective layer formed on top of the remaining portion of the metal gate remains.
摘要:
A method for manufacturing a semiconductor device, comprising forming a first gate stack portion on a surface of a substrate, the first gate stack portion including a first gate oxide layer and a first polysilicon layer on the first gate oxide layer, forming a second gate stack portion on the surface of the substrate, the second gate stack portion including a second gate oxide layer and a second polysilicon layer on the second gate oxide layer, forming a resistor portion in a recessed portion of the substrate below the surface of the substrate, the resistor portion including a third polysilicon layer, and removing the first and second polysilicon layers from the first and second gate stack portions to expose the first and second gate oxide layers, wherein at least one of a dielectric layer and a stress liner cover a top surface of the resistor portion during removal of the first and second polysilicon layers.