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    • 112. 发明授权
    • Heterojunction bipolar transistor having particular Ge distributions and
gradients
    • 具有特定Ge分布和梯度的异质结双极晶体管
    • US5440152A
    • 1995-08-08
    • US348216
    • 1994-11-28
    • Toru Yamazaki
    • Toru Yamazaki
    • H01L29/73H01L21/331H01L21/8249H01L27/06H01L29/205H01L29/732H01L29/737H01L27/00H01L27/082
    • H01L29/7378H01L27/0623
    • A semiconductor device with HBT that enables the cutoff frequency of the HBT to be restrained from lowering at higher collector current levels. The HBT has an emitter region, a SiGe base region, and first and second SiGe collector regions. The first collector region is adjacent to the base region. The base region has a first distribution of Ge concentration graded as a function of depth. The Ge concentration of the first distribution increases at a first gradient as a function of depth from a base-emitter junction to a base-collector junction. The first and second collector regions have second and third distributions of Ge concentration graded as a function of depth. A minimum Ge concentration of the second distribution is not lower than a maximum Ge concentration of the third distribution. In the vicinity of an interface of the first and second collector regions, Ge concentration of the second distribution decreases at a second gradient as a function of depth to the interface, Ge concentration of the third distribution decreases at a third gradient smaller than the second gradient as a function of depth from the interface toward an opposite end of the interface.
    • 具有HBT的半导体器件能够在更高的集电极电流水平下抑制HBT的截止频率的降低。 HBT具有发射极区域,SiGe基极区域以及第一和第二SiGe集电极区域。 第一集电极区域与基极区域相邻。 基区具有作为深度的函数分级的Ge浓度的第一分布。 第一分布的Ge浓度作为从基极 - 发射极结到基极 - 集电极结的深度的函数的第一梯度增加。 第一和第二集电区具有第二和第三分布的Ge浓度作为深度的函数。 第二分布的最小Ge浓度不低于第三分布的最大Ge浓度。 在第一和第二集电区域的界面附近,第二分布的Ge浓度作为与界面深度的函数的第二梯度减小,第三分布的Ge浓度以比第二梯度小的第三梯度减小 作为从界面到界面的相对端的深度的函数。
    • 113. 发明授权
    • Semiconductor device including a locos type field oxide film and a U
trench penetrating the locos film
    • 半导体器件包括位置型场氧化物膜和穿透该膜的U沟槽
    • US5306940A
    • 1994-04-26
    • US779878
    • 1991-10-21
    • Toru Yamazaki
    • Toru Yamazaki
    • H01L21/762H01L27/02H01L27/04H01L29/06
    • H01L21/76235H01L21/76202
    • In a semiconductor device having an element isolation region including a LOCOS type field oxide film formed in a surface of a silicon substrate and a U-trench isolation region provided in the silicon substrate, the U-trench isolation region is constituted with a U-trench provided such that it penetrates the field oxide film, a channel stopper provided in a portion of the silicon substrate exposed on a bottom face of the U-trench, a first film in a form of a silicon oxide film formed by thermal oxidation of an exposed portion of the silicon substrate in the U-trench, a second film comprising a buried layer having thermal reflow characteristics and burying the U-trench, a third film having non-thermal reflow characteristics and having a top face substantially coplanar with a top face of the field oxide film and a bottom face connected to a top face of the second films and a fourth film in a form of an insulating film connected to the top face of the third film at an upper end of said U-trench and covering the U-trench. In the element isolation region having this structure, there is no leakage current produced due to thermal oxidation of a polysilicon film buried in the U-trench, contrary to the conventional U-trench isolation region having buried polysilicon film. Further, increase of parasitic capacitance which is caused by thermal oxidation of the buried polysilicon layer can be also restricted.
    • 在具有形成在硅衬底的表面中的LOCOS型场氧化膜和设置在硅衬底中的U沟槽隔离区的元件隔离区的半导体器件中,U沟隔离区由U沟槽 被设置为穿透所述场氧化物膜,设置在所述硅衬底的暴露在所述U形沟槽的底面上的部分中的沟道阻挡层,通过曝光的氧化膜的热氧化形成的氧化硅膜形式的第一膜 所述U型沟槽中的所述硅衬底的一部分,包括具有热回流特性并埋入所述U沟槽的掩埋层的第二膜,具有非热回流特性的第三膜,并且具有与所述U型沟槽的顶面基本共面的顶面 所述场氧化物膜和连接到所述第二膜的顶面的底面和在所述Ut的上端连接到所述第三膜的顶面的绝缘膜形式的第四膜 并且覆盖了U沟。 在具有这种结构的元件隔离区域中,与具有掩埋多晶硅膜的常规U沟槽隔离区域相反,不存在由于埋入U沟槽中的多晶硅膜的热氧化而产生的漏电流。 此外,也可以限制由掩埋多晶硅层的热氧化引起的寄生电容的增加。
    • 117. 发明授权
    • High frequency filter assembly for electric instrument
    • 高频滤波器组合电器
    • US4782310A
    • 1988-11-01
    • US911999
    • 1986-09-26
    • Toshiki SaburiNobuyuki OhyaToru YamazakiTaisei Katoh
    • Toshiki SaburiNobuyuki OhyaToru YamazakiTaisei Katoh
    • H04B1/10H01R13/719H03H1/00H03H7/01H03H7/075H05K1/02
    • H01R13/7195H01R23/6873H03H1/0007H05K1/0231H05K1/0233H05K2201/10189H05K2201/10454H05K2201/10522H05K2201/1053
    • A high frequency filter assembly for an electric instrument including an internal electric circuit element arranged within a casing of metallic conductive material, and a connector mounted on a peripheral wall of the casing for connecting an external electric circuit to the internal electric circuit element. The filter assembly comprises at least a pair of overlapped insulation thin plates to be arranged between the connector and a connection terminal of the circuit element, and an earth electrode strip disposed between the insulation thin plates and being connected to a portion of the casing. One of the insulation thin plates is integrally provided with a first signal electrode strip which has one end for connection to the connector and is associated with the earth electrode strip to form a first plate condenser, and the other insulation thin plate is integrally provided with a second signal electrode strip which is connected structurally in series with the first signal electrode strip for connection to the connection terminal of the circuit element and associated with the earth electrode strip to form a second plate condenser electrically in parallel connection with the first plate condenser.
    • 一种用于电气仪器的高频滤波器组件,包括布置在金属导电材料的壳体内的内部电路元件,以及安装在壳体的周壁上的用于将外部电路连接到内部电路元件的连接器。 所述过滤器组件包括至少一对重叠的绝缘薄板,其布置在所述连接器和所述电路元件的连接端子之间,以及接地电极条,设置在所述绝缘薄板之间并连接到所述壳体的一部分。 一个绝缘薄板一体地设置有第一信号电极带,其具有用于连接到连接器的一端并与接地电极带相关联以形成第一板式冷凝器,另一绝缘薄板一体地设置有 第二信号电极条,其在结构上与第一信号电极条串联连接,用于连接到电路元件的连接端子并与接地电极条相关联,以形成与第一板式冷凝器并联连接的第二板式电容器。
    • 119. 发明授权
    • Elastomer display device
    • 弹性体显示装置
    • US4119368A
    • 1978-10-10
    • US753539
    • 1976-12-22
    • Toru Yamazaki
    • Toru Yamazaki
    • G03G16/00G02B26/00G02B27/50G02F1/19G09F9/30G02F1/00
    • G02B26/00
    • An elastomer display device which can discriminate by unaided visual observation a pattern to be displayed by utilizing elastic deformation of an elastomer produced upon application of an electric voltage thereto is disclosed. The device comprises a transparent substrate and four laminated coatings consisting of a transparent electric conductive membrane pattern to be displayed, a transparent elastomer coating, a metal reflecting coating and an electric conductive elastomer coating. Between the transparent electric conductive membrane pattern and the elastomer coating is interposed a transparent insulating coating which functions to decrease the voltage required for driving the elastomer display device. On the electric conductive elastomer coating is formed an opposed electrode formed of metal or electric conductive resin which functions to apply the voltage to overall surface of the display device. At least one of the electric conductive elastomer coating, transparent elastomer coating, metal reflecting coating and opposed electrode is formed into a pattern-shape which functions to prevent electric field from spreading out of the pattern and prevent frost-shaped surface deformation from being projected out of the pattern, thereby providing an elastomer display device having a high resolving power.
    • 公开了一种弹性体显示装置,其可以通过肉眼观察来鉴别通过利用在施加电压时产生的弹性体的弹性变形而显示的图案。 该装置包括透明基板和由待显示的透明导电膜图案,透明弹性体涂层,金属反射涂层和导电弹性体涂层组成的四个层压涂层。 在透明导电膜图案和弹性体涂层之间插入透明绝缘涂层,其用于降低驱动弹性体显示装置所需的电压。 在导电弹性体涂层上形成由用于将电压施加到显示装置的整个表面的金属或导电树脂形成的相对电极。 导电弹性体涂层,透明弹性体涂层,金属反射涂层和相对电极中的至少一个形成为图案形状,其功能是防止电场扩散出图案,并防止霜状表面变形被突出 的图案,从而提供具有高分辨能力的弹性体显示装置。