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发明授权
US08114750B2 Lateral diffusion field effect transistor with drain region self-aligned to gate electrode 有权
侧向扩散场效应晶体管，漏极区自对准至栅电极

Lateral diffusion field effect transistor with drain region self-aligned to gate electrode
摘要：
A disposable structure displaced from an edge of a gate electrode and a drain region aligned to the disposable structure is formed. Thus, the drain region is self-aligned to the edge of the gate electrode. The disposable structure may be a disposable spacer, or alternately, the disposable structure may be formed simultaneously with, and comprise the same material as, a gate electrode. After formation of the drain regions, the disposable structure is removed. The self-alignment of the drain region to the edge of the gate electrode provides a substantially constant drift distance that is independent of any overlay variation of lithographic processes.
摘要（中）：

形成从栅电极的边缘排列的一次性结构和与一次性结构对准的漏区。 因此，漏极区域与栅电极的边缘自对准。 一次性结构可以是一次性间隔件，或者替代地，一次性结构可以与栅电极同时形成并且包括与栅电极相同的材料。 在形成漏极区域之后，一次性结构被去除。 漏极区域到栅电极的边缘的自对准提供了与光刻工艺的任何叠加变化无关的基本恒定的漂移距离。

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