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    • 3. 发明授权
    • Method of making field effect transistor in which the increase of parasitic capacitance is restrained by scale reduction
    • 制造场效应晶体管的方法,其中寄生电容的增加受缩小的限制
    • US06624034B2
    • 2003-09-23
    • US10173835
    • 2002-06-19
    • Yuji AbeNaruhisa MiuraKohei SugiharaToshiyuki OishiYasunori Tokuda
    • Yuji AbeNaruhisa MiuraKohei SugiharaToshiyuki OishiYasunori Tokuda
    • H01L21336
    • H01L29/6653H01L21/823807H01L21/823814H01L29/665H01L29/66628
    • A method of producing a semiconductor device includes forming a gate electrode on a channel region on a surface of a semiconductor region of a semiconductor substrate, the channel region having a depth in the semiconductor substrate; forming a first pair of side wall spacers on opposite sides of the gate electrode; forming elevated semiconductor layers, each elevated semiconductor layer being elevated relative to the channel region, on regions outside of the pair of side wall spacers and in which source and drain regions of a first conductivity type are to be formed; removing the pair of first side wall spacers; and forming a pair of pocket injection regions of a second conductivity type by introducing, after the side wall spacers are removed, a dopant impurity producing the second conductivity type deeper in the semiconductor substrate than a region where the side wall spacers were formed, the pair of pocket injection regions respectively covering only a neighborhood of respective side surface parts of the channel region, where the source and drain regions are to be formed, forming respective pn junctions only between the neighborhood of the side surface parts and the pocket injection regions.
    • 一种制造半导体器件的方法包括在半导体衬底的半导体区域的表面上的沟道区上形成栅电极,所述沟道区在半导体衬底中具有深度; 在栅电极的相对侧上形成第一对侧壁间隔物; 形成升高的半导体层,每个升高的半导体层相对于沟道区域升高,在一对侧壁间隔物外侧的区域上,并且将形成第一导电类型的源极和漏极区域; 移除所述一对第一侧壁间隔件; 以及形成第二导电类型的一对口袋注入区域,在除去侧壁间隔物之后,在半导体衬底中产生比形成侧壁间隔物的区域更深的第二导电类型的掺杂剂杂质,该对 分别仅覆盖要形成源极和漏极区的沟道区的各个侧表面部分的附近的口腔注入区域,仅在侧表面部分的附近和口袋注入区域之间形成相应的pn结。
    • 9. 发明授权
    • Semiconductor laser device
    • 半导体激光器件
    • US5020072A
    • 1991-05-28
    • US401745
    • 1989-09-01
    • Yuji AbeHiroshi SugimotoKenichi OhtsukaToshiyuki OishiTeruhito Matsui
    • Yuji AbeHiroshi SugimotoKenichi OhtsukaToshiyuki OishiTeruhito Matsui
    • H01S5/00H01S5/12
    • H01S5/12H01S5/1231H01S5/124H01S5/1243
    • A semiconductor laser device includes an active layer, a first semiconductor layer having a larger energy band gap than the active layer, a diffraction grating layer having a larger energy band gap than the active layer and a smaller energy band gap than the first semiconductor layer, and a second semiconductor layer having the same composition as the first semiconductor layer, successively grown on the active layer, parallel stripe grooves of predetermined period reaching the first semiconductor layer produced at the entire surface of the grown layers, a cladding layer having the same composition as the first semiconductor layer which is re-grown thereon, and a diffraction grating constituted by the remainder of the diffraction grating layer. The coupling coefficient of the light is determined by the film thickness of a layer produced between the active layer and the diffraction grating layer, and the amplitude of the diffraction grating is determined by the layer thickness of the diffraction grating layer. Therefore, the coupling coefficient can be set at a design value at high precision and at high reproducibility.
    • 半导体激光器件包括有源层,具有比有源层大的能带隙的第一半导体层,具有比有源层更大的能带隙的衍射光栅层和比第一半导体层更小的能带隙, 以及具有与第一半导体层相同的组成的第二半导体层,在有源层上依次生长,在生长层的整个表面上到达第一半导体层的预定周期的平行条纹沟槽,具有相同组成的包覆层 作为在其上重新生长的第一半导体层,以及由衍射光栅层的其余部分构成的衍射光栅。 光的耦合系数由有源层和衍射光栅层之间产生的层的膜厚决定,衍射光栅的振幅由衍射光栅层的层厚决定。 因此,可以以高精度和高重现性将耦合系数设定在设计值。