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    • 5. 发明专利
    • Semiconductor device, and manufacturing method of the same
    • 半导体器件及其制造方法
    • JP2009302082A
    • 2009-12-24
    • JP2008151225
    • 2008-06-10
    • Hitachi Ltd株式会社日立製作所
    • FUJIWARA TAKESHIIMAI TOSHINORITAKEDA KENICHISHIMAMOTO HIROMI
    • H01L21/822H01L21/3205H01L23/52H01L27/04
    • H01L23/5228H01L27/0688H01L28/24H01L2924/0002H01L2924/00
    • PROBLEM TO BE SOLVED: To provide a semiconductor device capable of preventing a metal resistor element from being oxidized to increase a resistance value, and preventing increase of parasitic capacitance between metal wire layers without complicating a fabrication process; and a manufacturing method of the same. SOLUTION: This semiconductor device includes: a lower-surface oxidation preventing insulating film formed on a lower surface of a metal resistor element; an upper-surface oxidation preventing insulating film formed on an upper surface thereof; and a side-surface oxidation preventing insulating film formed only near a side surface of the metal resistor element by performing anisotropic etching after being deposited on a whole surface of a wafer in a process separated from those of the lower-surface oxidation preventing insulating film and the upper-surface oxidation preventing insulating film. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供能够防止金属电阻元件被氧化以增加电阻值并且防止金属线层之间的寄生电容增加而不使制造工艺复杂化的半导体器件; 及其制造方法。 解决方案:该半导体器件包括:形成在金属电阻器元件的下表面上的下表面的氧化防止绝缘膜; 形成在其上表面上的上表面氧化防止绝缘膜; 以及仅在金属电阻元件的侧面附近形成的侧面抗氧化绝缘膜,通过在与下表面的氧化防止绝缘膜分离的工序中沉积在晶片的整个表面上进行各向异性蚀刻,以及 上表面的氧化防止绝缘膜。 版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Semiconductor device, and manufacturing method thereof
    • 半导体器件及其制造方法
    • JP2009021509A
    • 2009-01-29
    • JP2007184614
    • 2007-07-13
    • Hitachi Ltd株式会社日立製作所
    • TAKEDA KENICHIFUJIWARA TAKESHIIMAI TOSHINORI
    • H01L21/822H01L21/28H01L21/285H01L21/3205H01L23/52H01L27/04
    • H01C17/12H01C7/006H01L23/5228H01L27/016H01L28/20H01L2924/0002Y10T29/49099H01L2924/00
    • PROBLEM TO BE SOLVED: To provide a technology for obtaining a semiconductor device with a resistance element having a low parasitic capacity and a small change in resistance value during heat treatment. SOLUTION: In a reactive DC sputtering method using tantalum as a sputtering target material and argon-nitrogen mixed gas as sputtering gas, a first resistance layer 5a consisting of a tantalum nitride film and having a thickness of 20 nm and a nitrogen concentration of less than 30 atom% and a second resistance layer 5b consisting of a tantalum nitride film and having a thickness of 5 nm and a nitrogen concentration of 30 atom% or more are formed in sequence. Then, the first and second resistance layers 5a, 5b are processed to form a resistance element R1. An upper region having a nitrogen concentration of 30 atom% or more is provided for reducing the resistance variation of the resistance element R1 down to less than 1% even when thermal load is given thereto in a wiring process. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种用于在热处理期间获得具有低寄生电容和电阻值变化小的电阻元件的半导体器件的技术。 解决方案:在使用钽作为溅射靶材料和氩 - 氮混合气体作为溅射气体的反应型DC溅射法中,由氮化钽膜构成的厚度为20nm的第一电阻层5a和氮浓度 小于30原子%的第二电阻层5b和由氮化钽膜构成的厚度为5nm,氮浓度为30原子%以上的第二电阻层5b依次形成。 然后,对第一和第二电阻层5a,5b进行处理以形成电阻元件R1。 提供氮浓度为30原子%以上的上部区域,即使在布线处理中给予热负荷,也可以将电阻元件R1的电阻变化降低到小于1%。 版权所有(C)2009,JPO&INPIT
    • 8. 发明专利
    • Flow sensor
    • 流量传感器
    • JP2007071737A
    • 2007-03-22
    • JP2005259902
    • 2005-09-07
    • Hitachi Ltd株式会社日立製作所
    • SAKUMA NORIYUKIYAMAMOTO NAOKITAKEDA KENICHIFUKUDA HIROSHI
    • G01F1/692G01F1/69
    • G01F1/6845G01F1/699G01P5/10
    • PROBLEM TO BE SOLVED: To provide a technique capable of providing a flow sensor of high sensitivity, by forming a metal film having relatively high TCR via an insulating film on a semiconductor substrate. SOLUTION: A measuring element of a thermal type fluid flow sensor includes: a heating resistor 3 constituted of the first metal film; a temperature detecting resistor (upstream temperature detecting resistor 4a and downstream temperature detecting resistor 4b); and an air temperature detecting resistor 5. The first metal film is formed of an α-Ta film having the resistivity of three times or less of that in a Ta ingot obtained with deposition by a spattering method on an amorphous film 9 containing metal. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:通过在半导体衬底上通过绝缘膜形成具有相对较高TCR的金属膜,提供能够提供高灵敏度的流量传感器的技术。 解决方案:热式流体流量传感器的测量元件包括:由第一金属膜构成的加热电阻器3; 温度检测电阻器(上游温度检测电阻器4a和下游温度检测电阻器4b); 和空气温度检测电阻器5.第一金属膜由具有通过溅射法沉积得到的Ta锭中的电阻率为包含金属的非晶膜9上的电阻率的三倍以下的α-Ta膜形成。 版权所有(C)2007,JPO&INPIT
    • 10. 发明专利
    • Semiconductor device and method of manufacturing same
    • 半导体器件及其制造方法
    • JP2007059761A
    • 2007-03-08
    • JP2005245492
    • 2005-08-26
    • Hitachi Ltd株式会社日立製作所
    • TAKEDA KENICHIFUJIWARA TAKESHIIMAI TOSHINORI
    • H01L21/822H01L21/768H01L27/04
    • PROBLEM TO BE SOLVED: To provide a semiconductor device equipped with an MIM capacitor capable of utilizing a wiring region directly under the MIM capacitor as a wiring, and capable of preventing the number of wiring layers and an IC chip area from increasing, in the spatially constituted MIM capacitor capable of raising a capacitance density, and to provide a method of manufacturing the semiconductor device. SOLUTION: The method comprises the steps of forming an interlayer dielectric 301 so as to cover a lower layer wiring; forming an opening whose height is smaller than a film thickness of the interlayer dielectric on the basis of a top face of the lower layer wiring to the interlayer dielectric; and forming the MIM capacitor constituted by an upper electrode 204, a capacitance film 401, and a lower electrode 203 so as to cover the opening. COPYRIGHT: (C)2007,JPO&INPIT
    • 解决方案:为了提供一种配备有能够利用MIM电容器正下方的布线区域的MIM电容器的半导体器件作为布线,并且能够防止布线层数量和IC芯片面积增加, 在能够提高电容密度的空间构成的MIM电容器中,提供半导体装置的制造方法。 解决方案:该方法包括以下步骤:形成层间电介质301以覆盖下层布线; 基于层间电介质的下层布线的顶面,形成高度小于层间电介质的膜厚的开口部; 以及形成由上电极204,电容膜401和下电极203构成的MIM电容器以覆盖开口。 版权所有(C)2007,JPO&INPIT