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    • 81. 发明申请
    • Sound-electricity conversion device, array-type ultrasonic transducer, and ultrasonic diagnostic apparatus
    • 声电转换装置,阵列式超声波换能器和超声波诊断装置
    • US20060284519A1
    • 2006-12-21
    • US11341655
    • 2006-01-30
    • Shinichiro UmemuraTakashi AzumaTatsuya NagataHiroshi FukudaToshiyuki MineSyuntaro Machida
    • Shinichiro UmemuraTakashi AzumaTatsuya NagataHiroshi FukudaToshiyuki MineSyuntaro Machida
    • H01L41/00
    • B06B1/0292
    • The present invention aims to stabilize sound-electricity conversion characteristics of a diaphragm-type sound-electricity conversion device as well as to decrease the noise level of an ultrasonic diagnostic apparatus using the sound-electricity conversion device. The sound-electricity conversion device is configured by a capacitor cell including a lower electrode formed on a silicon substrate and an upper electrode over the lower electrode, the lower and upper electrodes sandwiching a cavity. An electrode short-circuit prevention film is formed on the upper electrode on the cavity side. The electrode short-circuit prevention film is formed of a material with an electrical time constant shorter than 1 second and longer than 10 microseconds, such as silicon nitride containing a stoichiometrically excessive amount of silicon. As a result, the electrode short-circuit prevention film has small electric conductivity, and thus it is made possible to prevent the film from being charged with electric charge and to avoid the drift of the electric charge. Consequently, the sound-electricity conversion characteristics of the sound-electricity conversion device stabilize, and further the sound noise level of the ultrasonic diagnostic apparatus decreases.
    • 本发明旨在稳定隔膜式声电转换装置的声电转换特性,并且降低使用声电转换装置的超声波诊断装置的噪声水平。 声电转换装置由包括形成在硅基板上的下电极和下电极上的上电极的电容器单元构成,下电极和上电极夹着空腔。 在空腔侧的上部电极上形成电极短路防止膜。 电极短路防止膜由电气时间常数短于1秒且长于10微秒的材料形成,例如含有化学计量过量的硅的氮化硅。 结果,电极短路防止膜具有小的导电性,因此可以防止膜被充电并避免电荷的漂移。 因此,声电转换装置的声电转换特性稳定,超声波诊断装置的声音噪声水平进一步降低。
    • 83. 发明授权
    • Semiconductor device and method manufacturing the same
    • 半导体装置及其制造方法
    • US07122900B2
    • 2006-10-17
    • US10276776
    • 2001-05-28
    • Kenichi TakedaDaisuke RyuzakiKenji HinodeToshiyuki Mine
    • Kenichi TakedaDaisuke RyuzakiKenji HinodeToshiyuki Mine
    • H01L21/44
    • H01L21/76834H01L21/76801H01L21/76811H01L21/76813
    • A semiconductor device according to this invention comprises a substrate 100 in which semiconductor elements are formed, a first conductor 301 at least a portion of the peripheral surface of which is made of a material comprising copper as a main ingredient, and a first insulative diffusion barrier layer 203 covering at least a portion of the first conductor 301. The first insulative diffusion barrier layer 203 is formed by using a gas mixture at least containing an alkoxy silane represented by the general formula (RO)nSiH4−n (n is an integer in a range from 1 to 3, R represents an alkyl group, an aryl group or a derivative thereof), and an oxidative gas by a plasma CVD. Thus, a semiconductor device comprising copper wiring of high reliability and with less wiring delay time can be provided.
    • 根据本发明的半导体器件包括其中形成有半导体元件的基板100,其外围表面的至少一部分由包含铜作为主要成分的材料制成的第一导体301和第一绝缘扩散阻挡层 层203覆盖第一导体301的至少一部分。 第一绝缘扩散阻挡层203通过使用至少含有由通式(RO)表示的烷氧基硅烷的气体混合物形成(n为 1〜3的整数,R表示烷基,芳基或其衍生物)和通过等离子体CVD的氧化性气体。 因此,可以提供包括具有高可靠性和较少布线延迟时间的铜布线的半导体器件。
    • 89. 发明授权
    • Gain cell type non-volatile memory having charge accumulating region charged or discharged by channel current from a thin film channel path
    • 具有从薄膜通道路径通过通道电流充电或放电的电荷累积区域的增益单元型非易失性存储器
    • US06876023B2
    • 2005-04-05
    • US10158851
    • 2002-06-03
    • Tomoyuki IshiiKazuo YanoToshiyuki Mine
    • Tomoyuki IshiiKazuo YanoToshiyuki Mine
    • H01L21/8247G11C16/04H01L21/8242H01L21/8244H01L27/105H01L27/108H01L27/11H01L27/115H01L27/12H01L29/66H01L29/786H01L29/788H01L29/792
    • G11C16/0433H01L27/105H01L27/108H01L27/10873H01L27/12H01L27/1203H01L29/78642
    • A semiconductor memory element subject to a threshold voltage controlling method other than those based on low leak currents or on the implantation of impurities. Such semiconductor elements are used to form semiconductor memory elements that are employed in scaled-down structures and are conducive to high-speed write operations thanks to a sufficiently prolonged refresh cycle. These semiconductor memory elements are in turn used to constitute a semiconductor memory device. A very thin semiconductor film is used as channels so that leak currents are reduced by the quantum-mechanical containment effect in the direction of film thickness. An amount of electrical charges in each charge accumulating region is used to change conductance between a source and a drain region of each read transistor structure, the conductance change being utilized for data storage. A channel of a transistor for electrically charging or discharging each charge accumulating region is made of a semiconductor film 5 nm thick at most. The arrangement affords both high-speed data write performance and an extended data retention time. The invention provides a high-speed, power-saving semiconductor device of high integration particularly advantageous for producing a small-scale system of low-power dissipation.
    • 除了基于低泄漏电流或杂质注入以外的阈值电压控制方法的半导体存储元件。 这样的半导体元件用于形成在缩小结构中使用的半导体存储器元件,并且由于足够长的刷新周期而有利于高速写入操作。 这些半导体存储元件又用于构成半导体存储器件。 使用非常薄的半导体膜作为通道,使得通过膜厚度方向的量子力学容纳效应来降低泄漏电流。 使用每个电荷累积区域中的电荷量来改变每个读取晶体管结构的源区和漏区之间的电导,所述电导变化用于数据存储。 用于对每个电荷累积区进行充电或放电的晶体管的沟道由最多为5nm厚的半导体膜制成。 该方案具有高速数据写入性能和扩展数据保留时间。 本发明提供了高集成度的高速,省电的半导体器件,特别有利于生产低功耗的小规模系统。
    • 90. 发明授权
    • Semiconductor device and production method thereof
    • 半导体装置及其制造方法
    • US06849513B2
    • 2005-02-01
    • US10683387
    • 2003-10-14
    • Shimpei TsujikawaJiro YugamiToshiyuki MineMasahiro Ushiyama
    • Shimpei TsujikawaJiro YugamiToshiyuki MineMasahiro Ushiyama
    • H01L29/78H01L21/28H01L29/51H01L21/336
    • H01L21/28185H01L21/28194H01L21/28202H01L21/28211H01L29/511H01L29/513H01L29/518
    • The present invention provides a MOS semiconductor device which enables gate leakage current reduction with a thinner gate dielectric film for higher speed, and a production method thereof. According to the present invention, a gate dielectric film 6 is made as follows: after forming a silicon nitride film 3 with a specified thickness, it is annealed in an oxidizing atmosphere to form silicon oxide 4 on the silicon nitride film 3, then this silicon oxide 4 is completely removed by exposure to a dissolving liquid. As a result, at depths between 0.12 nm and 0.5 nm from the top surface of the silicon nitride film 3 in the gate dielectric film 6 whose main constituent elements are silicon, nitrogen and oxygen, the nitrogen concentration is higher than the oxygen concentration. This enables the use of a thinner gate dielectric film with silicon, nitrogen and oxygen as main constituent elements while at the same time realizing reduction in leakage currents.
    • 本发明提供一种能够通过较薄栅极电介质膜进行栅极泄漏电流降低的MOS半导体器件及其制造方法。 根据本发明,栅电介质膜6如下制作:在形成规定厚度的氮化硅膜3之后,在氧化气氛中进行退火,在氮化硅膜3上形成氧化硅4, 氧化物4通过暴露于溶解液而完全除去。 结果,在主要构成元素为硅,氮和氧的栅极电介质膜6中,距离氮化硅膜3的顶表面在0.12nm至0.5nm之间的深度处,氮浓度高于氧浓度。 这使得能够使用具有硅,氮和氧作为主要构成元件的较薄的栅极电介质膜,同时实现漏电流的减小。