Abstract:
A semiconductor component includes a substrate, two isolation structures, a conductor pattern and a dielectric layer. The isolation structures are disposed in the substrate, and each of the isolation structures has protruding portions protruding from the surface of the substrate. A trench is formed between the protruding portions. The included angle formed by the sidewall of the protruding portion and the surface of the substrate is an obtuse angle. The conductor pattern is disposed in the trench and fills the trench up. The dielectric layer is disposed between the conductor pattern and the substrate.
Abstract:
A floating gate and a fabricating method of the same. A semiconductor substrate is provided. A gate dielectric layer and a conducting layer are sequentially formed on the semiconductor substrate. A patterned hard mask layer having an opening is formed on the conducting layer, wherein a portion of the conducting layer is exposed through the opening. A spacer is formed on the sidewall of the opening. The patterned hard mask layer is removed. A conducting spacer is formed on the sidewall of the spacer. The exposed conducting layer and the exposed gate dielectric layer are sequentially removed.
Abstract:
A floating gate and fabrication method thereof. A semiconductor substrate is provided, on which a gate dielectric layer, a conducting layer, and a patterned hard mask layer are sequentially formed. The surface of the conducting layer is covered by the patterned hard mask layer to form a gate. The conducting layer is etched to a predetermined depth to form an indentation using the patterned hard mask layer as a mask. The conducting layer is oxidized to form an oxide layer on the surface of the conducting layer. The oxide layer and the conducting layer are etched to form multiple tips using the patterned hard mask layer as a mask.
Abstract:
A method of making embedded DRAM devices having integrated therein a gate electrode of low sheet resistance satisfying the requirement of high performance logic circuitry is provided. The gate electrode on a semiconductor substrate comprises a gate oxide film, a polysilicon film, a metal, a lightly doped diffusion layer, silicon dioxide spacers, and a source/drain diffusion layer. The metal is planted in an opening, where a capped silicon nitride used to occupy, on top the polysilicon film.