摘要:
A method of forming field isolation regions (300) on a semiconductor substrate for an integrated circuit. The present method includes forming a sandwich type structure as an oxidation mask (140), (160), and (200). The present sandwich type structure includes an underlying oxide layer (120) formed overlying the top surface. The present sandwich type structure includes a polysilicon layer (140) overlying the oxide layer (120), a first silicon nitride layer (160) overlying the polysilicon layer (140), and a second silicon nitride layer (200) overlying the first silicon nitride layer (160) where the second silicon nitride layer (200) is much thicker than the first layer of silicon nitride (160). The present method also includes patterning the second silicon nitride layer (200), the first silicon nitride layer (160), and the polysilicon layer (140) to define an oxidation mask. The oxidation mask includes exposed regions (210) of the oxide layer (120) where field isolation oxide regions (300) will be formed therein.
摘要:
A method of fabricating an integrated circuit device with a substantially uniform inter-layer dielectric layer. The method includes steps of providing a partially completed semiconductor wafer (400) where the partially completed semiconductor device has a first polysilicon layer (401) thereon. The method includes depositing a dielectric layer (405) overlying the polysilicon layer and portions of the partially completed semiconductor device at a pressure of about 1 atmosphere. A step of forming a second polysilicon layer overlying portions of the dielectric layer is also included. The dielectric layer depositing step includes combining an organic silane and an ozone at a concentration of 200 g/m.sup.3 and less.
摘要翻译:一种制造具有基本均匀的层间电介质层的集成电路器件的方法。 该方法包括提供部分完成的半导体晶片(400)的步骤,其中部分完成的半导体器件在其上具有第一多晶硅层(401)。 该方法包括在约1个大气压下沉积覆盖多晶硅层的电介质层(405)和部分完成的半导体器件的部分。 还包括形成覆盖介电层部分的第二多晶硅层的步骤。 电介质层沉积步骤包括以200g / m 3以下的浓度组合有机硅烷和臭氧。
摘要:
An improved method and resulting structures for producing a layered capacitor structure of memory cell of a DRAM device wherein a doped polysilicon spacer operates as a dopant source for an overlying polysilicon layer on the vertical and sharply inclined surfaces.
摘要:
A method of forming field isolation regions (300) on a semiconductor substrate for an integrated circuit. The present method includes forming a sandwich type structure as an oxidation mask (140), (160), and (200). The present sandwich type structure includes an underlying oxide layer (120) formed overlying the top surface. The present sandwich type structure includes a polysilicon layer (140) overlying the oxide layer (120), a first silicon nitride layer (160) overlying the polysilicon layer (140), and a second silicon nitride layer (200) overlying the first silicon nitride layer (160) where the second silicon nitride layer (200) is much thicker than the first layer of silicon nitride (160). The present method also includes patterning the second silicon nitride layer (200), the first silicon nitride layer (160), and the polysilicon layer (140) to define an oxidation mask. The oxidation mask includes exposed regions (210) of the oxide layer (120) where field isolation oxide regions (300) will be formed therein.
摘要:
A method of forming field isolation regions (300) on a semiconductor substrate for an integrated circuit. The present method includes forming a sandwich type structure as an oxidation mask (140), (160), and (200). The present sandwich type structure includes an underlying oxide layer (120) formed overlying the top surface. The present sandwich type structure includes a polysilicon layer (140) overlying the oxide layer (120), a first silicon nitride layer (160) overlying the polysilicon layer (140), and a second silicon nitride layer (200) overlying the first silicon nitride layer (160) where the second silicon nitride layer (200) is much thicker than the first layer of silicon nitride (160). The present method also includes patterning the second silicon nitride layer (200), the first silicon nitride layer (160), and the polysilicon layer (140) to define an oxidation mask. The oxidation mask includes exposed regions (210) of the oxide layer (120) where field isolation oxide regions (300) will be formed therein.
摘要:
A method of forming a self-aligned metal oxide semiconductor (MOS) structure is described. Multilayer dielectrics are used at the edge of the gate electrode, and the gate electrode, the source and the drain have metal silicide regions. The first layer of dielectric is used to define a lightly doped drain (LDD) structure and the second dielectric layer serves to extend the oxide region at the gate edge and to improve the source/drain junction leakage property and to reduce the shorting percentage of gate to source/drain. A special device structure with extended lateral diffusion of junction under the oxide at the gate edge will be performed by using this method.
摘要:
An EPROM cell and a method that includes a gate structure having a sidewall spacer. The sidewall spacer is made by way of an amorphous or polycrystalline silicon layer, which is converted into an insulating layer such as silicon dioxide. Deposition of the amorphous or polycrystalline silicon layer is more accurate and produces a more uniform layer than conventional dielectric layer deposition.
摘要:
The method for depositing a dielectric layer can be used to evenly deposit the dielectric layer to be applied to a semiconductor device. The method includes steps of: a) providing a substrate; b) depositing a first dielectric film on the subtrate; c) introducing an oxygen plasma for eliminating an uneven distribution of charges on a surface of the substrate; and d) forming a second dielectric film on the first dielectric film treated with the oxygen plasma for obtaining the dielectric layer having a uniform thickness on the substrate,
摘要:
An improved method and resulting structures for producing a layered capacitor structure of memory cell of a DRAM device wherein a doped polysilicon spacer operates as a dopant source for an overlying polysilicon layer on the vertical and sharply inclined surfaces.
摘要:
An improved method for manufacturing high density CMOS integrated circuits which minimizes counterdoping of the N and P well structures includes providing a composite masking layer which has layers of silicon oxide, polycrystalline silicon and silicon nitride over a silicon monocrystalline substrate. A mask layer pattern is formed from the composite masking layer by lithography and anisotropic etching which removes the silicon nitride and the portion of the thickness of the polycrystalline silicon over areas designated to be the N well structure. The mask layer pattern is subjected to isotropic etching of the polycrystalline silicon to remove the remaining exposed thickness of polycrystalline silicon and to undercut etch the polycrystalline silicon under the silicon nitride portion of the mask layer pattern. The N well structure is ion implanted and formed by using the silicon nitride layer portion of the mask layer pattern as the mask. The silicon substrate over the N well and the exposed the polycrystalline silicon layer under the silicon nitride layer of the mask layer pattern is oxidized to form an N well silicon oxide pattern. The mask layer pattern is removed. The P well structure is ion implanted and formed using the N well silicon oxided pattern as the mask. The P well structure has minimized counterdoping by these process steps. All the silicon oxide from the surface of the silicon substrates are removed. Field oxide isolating structures are formed at the juncture of P well and N well structures.