CMOS structure with parasitic channel prevention
    41.
    发明授权
    CMOS structure with parasitic channel prevention 失效
    具有寄生通道预防的CMOS结构

    公开(公告)号:US5463238A

    公开(公告)日:1995-10-31

    申请号:US22369

    申请日:1993-02-25

    摘要: A semiconductor device comprises a complementary MOS transistor integrated circuit formed in a semiconductor single crystal silicon disposed on an electrically insulating layer. A thickness of the single crystal silicon in a region in which an N-type MOS transistor is formed is made thicker than the thickness in a region in which a P-type MOS transistor is formed. By this structure, the bottoms of the source region and the drain region of the N-type transistor are separated from the electrically insulating layer by a predetermined distance. The separation of the source region and the drain region from the electrically insulating layer is effective to prevent a parasitic channel from forming, thereby reducing leakage current and making the semiconductor device more efficient.

    摘要翻译: 半导体器件包括形成在设置在电绝缘层上的半导体单晶硅中的互补MOS晶体管集成电路。 形成N型MOS晶体管的区域中的单晶硅的厚度比形成有P型MOS晶体管的区域的厚度厚。 通过这种结构,N型晶体管的源极区域和漏极区域的底部与电绝缘层分离预定距离。 源极区域和漏极区域与电绝缘层的分离对于防止形成寄生沟道是有效的,从而减少漏电流并使半导体器件更有效率。

    Semiconductor device for a light wave
    42.
    发明授权
    Semiconductor device for a light wave 失效
    用于光波的半导体器件

    公开(公告)号:US5434433A

    公开(公告)日:1995-07-18

    申请号:US106418

    申请日:1993-08-13

    摘要: A semiconductor substrate is utilized to integrally form a drive circuit and a pixel array to produce a transparent semiconductor device for a light valve. The semiconductor device for a light valve is constructed by a semiconductor substrate composed of a bulk single crystal silicon having an opaque thick portion and a thin transparent portion. A pixel array is formed in the transparent portion. A drive circuit is formed in a top face of the opaque portion. A transparent support substrate is laminated to the top face of the semiconductor substrate for reinforcement. A bulk portion of the semiconductor substrate is removed from a back face thereof by selective etching to provide the transparent portion.

    摘要翻译: 利用半导体衬底整体地形成驱动电路和像素阵列以产生用于光阀的透明半导体器件。 用于光阀的半导体器件由具有不透明厚部分和薄透明部分的大块单晶硅构成的半导体衬底构成。 在透明部分中形成像素阵列。 驱动电路形成在不透明部分的顶面。 将透明支撑基板层叠到半导体基板的顶面以进行加强。 通过选择性蚀刻从其背面去除半导体衬底的主体部分以提供透明部分。

    Warning sound generating device
    44.
    发明授权
    Warning sound generating device 失效
    警示声发生装置

    公开(公告)号:US4963855A

    公开(公告)日:1990-10-16

    申请号:US483258

    申请日:1990-02-21

    申请人: Yoshikazu Kojima

    发明人: Yoshikazu Kojima

    IPC分类号: G10K9/22

    CPC分类号: G10K9/22

    摘要: A warning sound generating device includes a sound source member and an enclosure for protecting the sound source member. A front wall of the enclosure and a sound emitting portion of the sound source member face each other. The front wall of the enclosure has at least one continuous projecting wall extending toward the sound source member. The sound source member has at least one continuous projecting wall extending toward the enclosure and surrounding the sound emitting portion. The enclosure has a plurality of sound exits formed outwardly from the outermost projectng wall of the enclosure. The projecting walls of the sound source member and the enclosure cooperate to define a sound passageway through which a sound generated from the sound emitting portion passes. Each of the projecting walls has a thickness decreasing from the base to the forward rim thereof, so that the passageway has a width between the projecting walls increasing from the sound emitting portion to the sound exits.

    摘要翻译: 警告声产生装置包括声源构件和用于保护声源构件的外壳。 外壳的前壁和声源构件的发声部分彼此面对。 外壳的前壁具有朝向声源构件延伸的至少一个连续的突出壁。 声源构件具有至少一个连续的突出壁,其朝着外壳延伸并围绕发声部分。 外壳具有从外壳的最外侧的投影壁向外形成的多个声音出口。 声源构件和外壳的突出壁协作以形成声音通道,声音从声发射部分产生的声音通过该通道。 每个突出壁的厚度从基部向其前边缘减小,使得通道具有从发声部分到声音出口的突出壁之间的宽度。

    Semiconductor device and manufacturing method thereof
    45.
    发明授权
    Semiconductor device and manufacturing method thereof 失效
    半导体装置及其制造方法

    公开(公告)号:US06498376B1

    公开(公告)日:2002-12-24

    申请号:US08459831

    申请日:1995-06-02

    IPC分类号: H01L2976

    摘要: A MISFET is provided with a segmented channel comprising regions in which the channel is inverted by a first gate voltage and regions in which the channel is inverted by a second gate voltage. The MISFET is formed in a semiconductor substrate having a first conductivity type and the first inversion region of the channel has a first impurity concentration determined by the surface concentration of the substrate. The second inversion region of the channel has a second impurity concentration determined by doping an impurity to the region selected by a photolithographic process. The first and second inversion regions may be divided into a plurality of plane shapes and the threshold voltage of the MISFET is set to a desired value in accordance with the plane area ratio of the first and second inversion regions.

    摘要翻译: MISFET设置有分段通道,该分段通道包括其中通道被第一栅极电压反相的区域和通道以第二栅极电压反相的区域。 MISFET形成在具有第一导电类型的半导体衬底中,沟道的第一反相区域具有由衬底的表面浓度确定的第一杂质浓度。 通道的第二反转区域具有通过将杂质掺杂到通过光刻工艺选择的区域而确定的第二杂质浓度。 第一反转区域和第二反转区域可以被划分成多个平面形状,并且根据第一和第二反转区域的平面面积比将MISFET的阈值电压设置为期望值。

    Small geometry high voltage semiconductor device
    46.
    发明授权
    Small geometry high voltage semiconductor device 失效
    小几何高压半导体器件

    公开(公告)号:US06222235B1

    公开(公告)日:2001-04-24

    申请号:US08677541

    申请日:1996-07-10

    IPC分类号: H01L2362

    摘要: A semiconductor device including multiple high-voltage drive transistors in its output section is improved in electrostatic withstand voltage by connecting electrostatic protection transistors in parallel with the high-voltage drive transistors connected to the output pads. The drain withstand voltage of the electrostatic protection transistors is made lower than the drain withstand voltage of the high-voltage drive transistors. In addition, the channel length of electrostatic protection transistors is made short to enable efficient bipolar operation of the electrostatic protection transistors.

    摘要翻译: 在其输出部分中包括多个高电压驱动晶体管的半导体器件通过将静电保护晶体管与连接到输出焊盘的高电压驱动晶体管并联连接来提高静电耐受电压。 使静电保护晶体管的漏极耐受电压低于高电压驱动晶体管的漏极耐受电压。 此外,静电保护晶体管的沟道长度变短,以实现静电保护晶体管的高效双极性操作。

    Method of forming a semiconductor device for a light valve
    47.
    发明授权
    Method of forming a semiconductor device for a light valve 失效
    形成光阀的半导体器件的方法

    公开(公告)号:US06187605B1

    公开(公告)日:2001-02-13

    申请号:US08308564

    申请日:1994-09-19

    IPC分类号: H01L2100

    摘要: A semiconductor substrate is utilized to integrally form a drive circuit and a pixel array to produce a transparent semiconductor device for a light valve. The semiconductor device for a light valve is constructed of a semiconductor substrate composed of a bulk single crystal silicon having an opaque thick portion and a thin transparent portion. A pixel array is formed in the transparent portion. A drive circuit is formed in a top face of the opaque portion. A transparent support substrate is laminated to the top face of the semiconductor substrate for reinforcement. A bulk portion of the semiconductor substrate is removed from a back face thereof by selective etching to provide the transparent portion.

    摘要翻译: 利用半导体衬底整体地形成驱动电路和像素阵列以产生用于光阀的透明半导体器件。 用于光阀的半导体器件由具有不透明厚部分和薄透明部分的块状单晶硅构成的半导体衬底构成。 在透明部分中形成像素阵列。 驱动电路形成在不透明部分的顶面。 将透明支撑基板层叠到半导体基板的顶面以进行加强。 通过选择性蚀刻从其背面去除半导体衬底的主体部分以提供透明部分。

    Poly-crystalline silicon film ladder resistor
    50.
    发明授权
    Poly-crystalline silicon film ladder resistor 失效
    多晶硅膜梯形电阻

    公开(公告)号:US6013940A

    公开(公告)日:2000-01-11

    申请号:US516627

    申请日:1995-08-18

    摘要: A resistor ladder network may be formed with a reduced space on a semiconductor substrate by patterning a plurality of layers of resistive polycrystalline silicon films spaced by insulating layers. Such a device includes a first insulating film formed on a semiconductor substrate, one or more serial-connected first resistors formed in a first polycrystalline silicon film provided on the semiconductor substrate via the first insulating film, a second insulating film provided on the first polycrystalline silicon film, one or more series-connected second resistors formed in a second polycrystalline silicon film provided apart from the first polycrystalline silicon film via the second insulating film, the second polycrystalline silicon film being connected to the first polycrystalline silicon film. A third insulating film is provided over the second polycrystalline silicon film, and metal wires provided on a surface of the second polycrystalline silicon film via contact holes formed in the third insulating film. Preferably, the first polycrystalline silicon film is thicker than the second polycrystalline silicon film, the impurity concentration of the first polycrystalline silicon film is lower than the impurity concentration of the second polycrystalline silicon film, and the grain size of the first polycrystalline silicon film is smaller than that of the second polycrystalline silicon film.

    摘要翻译: 可以通过对由绝缘层隔开的多层电阻多晶硅膜进行构图而在半导体衬底上形成具有减小的空间的电阻梯形网络。 这种器件包括形成在半导体衬底上的第一绝缘膜,经由第一绝缘膜形成在设置在半导体衬底上的第一多晶硅膜中的一个或多个串联连接的第一电阻器,设置在第一多晶硅上的第二绝缘膜 膜,一个或多个串联连接的第二电阻器,形成在通过第二绝缘膜与第一多晶硅膜分开设置的第二多晶硅膜中,第二多晶硅膜连接到第一多晶硅膜。 在第二多晶硅膜上设置第三绝缘膜,通过形成在第三绝缘膜中的接触孔,设置在第二多晶硅膜的表面上的金属线。 优选地,第一多晶硅膜比第二多晶硅膜厚,第一多晶硅膜的杂质浓度低于第二多晶硅膜的杂质浓度,第一多晶硅膜的晶粒尺寸较小 比第二多晶硅膜的厚度大。