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    • 41. 发明授权
    • Ferroelectric memory device
    • 铁电存储器件
    • US06770492B2
    • 2004-08-03
    • US10300839
    • 2002-11-21
    • Hiromichi WakiKeiichi YoshizumiMitsuhiro Mori
    • Hiromichi WakiKeiichi YoshizumiMitsuhiro Mori
    • H01L2100
    • H01L27/11502H01L27/1085H01L27/10894H01L27/11507H01L28/55
    • This invention provides a technique for preventing film quality of a capacitive insulating film made of a ferroelectric film of a FeRAM memory cell from being degraded and for improving the characteristics of the FeRAM memory cell. A shielding film having a higher lead content than that of a capacitive insulating film is formed under a lower electrode of a capacitor in a FeRAM memory cell, and another shielding film having a higher lead content than that of the capacitive insulating film is formed on an upper electrode. PZT films to be used as barrier layers are formed in the interlayer insulating films the FeRAM memory cell. As a result, it is possible to prevent H2 or H2O from entering an upper portion or a lower portion of the capacitor, and lead diffused from the capacitive insulating film 11a can be compensated by lead included in the shielding films, and it is possible to prevent characteristics of the capacitive insulating film 11a from being degraded.
    • 本发明提供一种用于防止由FeRAM存储单元的铁电体膜构成的电容绝缘膜的膜质量降低的技术,并且用于改善FeRAM存储单元的特性。一种屏蔽膜,其铅含量高于 电容绝缘膜形成在FeRAM存储单元中的电容器的下电极下方,并且在上电极上形成具有比电容绝缘膜高的铅含量的另一屏蔽膜。 用作阻挡层的PZT膜在FeRAM存储单元的层间绝缘膜中形成。 结果,可以防止H 2或H 2 O进入电容器的上部或下部,并且可以通过包含在屏蔽膜中的引线来补偿从电容绝缘膜11a扩散的引线,并且可以 防止电容绝缘膜11a的特性劣化。
    • 46. 发明授权
    • Method of doping gate electrodes discretely with either P-type or N-type
impurities to form discrete semiconductor regions
    • 使用P型或N型杂质离子地掺杂栅电极以形成离散半导体区域的方法
    • US5328864A
    • 1994-07-12
    • US699024
    • 1991-05-13
    • Keiichi YoshizumiSatoshi Kudo
    • Keiichi YoshizumiSatoshi Kudo
    • H01L21/768H01L21/28H01L21/8238H01L21/336
    • H01L21/28026H01L21/823842Y10S148/106
    • The present invention relates to a method of manufacturing a semiconductor device. In a semiconductor substrate formed with a first semiconductor region of P-type and a second semiconductor region of N-type and an insulating film formed between and extending into the first and the second semiconductor regions, gate electrodes of a laminate of a polysilicon layer and a silicide layer are formed on the insulating film covering the first and the second semiconductor regions. A gate electrode situated on the first semiconductor region has an end portion facing and spaced from an end portion of a gate electrode situated on the second semiconductor region. A masking layer is formed on the second semiconductor region with an edge of the masking layer falling between the two gate electrodes where the two end portions face each other. The first semiconductor region is doped with an impurity of N-type, thereby forming a third semiconductor region in the first semiconductor region. The masking layer is removed from the second semiconductor region and a masking layer is formed on the first semiconductor region with an edge of the masking layer falling between the two gate electrodes where the two end portions face each other. The second semiconductor region is doped with an impurity of P-type, thereby forming a fourth semiconductor region in the second semiconductor region. By providing a masking layer to fall between the end portions of the gate electrodes, the gate electrodes are discretely doped to form discrete semiconductor regions.
    • 本发明涉及半导体器件的制造方法。 在形成有P型的第一半导体区域和形成在第一和第二半导体区域之间并延伸到第一和第二半导体区域中的N型的第二半导体区域和绝缘膜的半导体衬底中,多晶硅层和 在覆盖第一和第二半导体区域的绝缘膜上形成硅化物层。 位于第一半导体区域上的栅电极具有面对并位于位于第二半导体区域上的栅电极的端部的端部。 掩模层形成在第二半导体区上,其中掩模层的边缘落在两个端部彼此面对的两个栅电极之间。 第一半导体区域掺杂有N型杂质,从而在第一半导体区域中形成第三半导体区域。 从第二半导体区域去除掩模层,并且在第一半导体区域上形成掩模层,其中掩模层的边缘落在两个端部彼此面对的两个栅电极之间。 第二半导体区域掺杂有P型杂质,从而在第二半导体区域中形成第四半导体区域。 通过提供掩模层落在栅电极的端部之间,栅电极被离散地掺杂以形成分立的半导体区域。
    • 47. 发明授权
    • Optical measuring device
    • 光学测量装置
    • US4776699A
    • 1988-10-11
    • US881283
    • 1986-07-02
    • Keiichi Yoshizumi
    • Keiichi Yoshizumi
    • G01B9/02G01B11/24G01B11/245
    • G01B9/02007G01B11/24G01B9/02003G01B9/02045G01B9/02063G01B9/02068G01B2290/70
    • An optical measuring device adapted to irradiate a measuring beam on the surface of an object to be measured which is being moved relative to the measuring beam, and detect the Doppler shift of the reflected rays of the measuring beam so as to measure the surface configuration and the sizes of the object. The incident rays of the measuring beam are condensed on the surface of the object by an objective lens such that the rays reflected from the object follows the same optical path as that of the incident ray, a part of the rays reflected by the surface of the object is branched off and received by a first photodetector means including a quarter-sectioned photodetector so that the deviation of the optical path of the reflected rays from the optical path of the incident rays is detected when the inclination of the surface of the object changes, and the optical path of the incident rays is moved in the direction normal to the optical axis of the objective lens in correspondence with a signal output from the first photodetector means and indicative of the deviation, so as to avoid changing the lengths of the optical paths of the reflected rays and the incident rays.
    • 一种光学测量装置,其适于将被测量物体的表面上的测量光束照射在相对于测量光束移动的表面上,并且检测测量光束的反射光线的多普勒频移,以测量表面形状, 对象的大小。 测量光束的入射光线通过物镜在物体的表面上被冷凝,使得从物体反射的光线与入射光线相同的光路,与由入射光线的表面反射的一部分光线 物体由包括四分之一部分的光电检测器的第一光电检测器分支和接收,使得当物体的表面的倾斜改变时,检测来自入射光线的光路的反射光线的光路的偏差, 并且入射光线的光路相对于从第一光检测器装置输出的信号并且指示偏差沿垂直于物镜的光轴的方向移动,以避免改变光路的长度 的反射光线和入射光线。