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    • 2. 发明申请
    • SEMICONDUCTOR DEVICE
    • 半导体器件
    • US20090218662A1
    • 2009-09-03
    • US12394862
    • 2009-02-27
    • Shinji KudohRyu HirataShinichi Miyazono
    • Shinji KudohRyu HirataShinichi Miyazono
    • H01L29/861H01L29/06
    • H01L29/8613H01L29/0626H01L29/0657H01L29/861
    • A semiconductor device includes: a first semiconductor region of a first conductive type; a second semiconductor region of the first conductive type formed on an upper surface of the first semiconductor region and having a lower impurity concentration than that of the first semiconductor region; a third semiconductor region of the first conductive type formed on the upper surface of the first semiconductor region and having a higher impurity concentration than that of the second semiconductor region; and a fourth semiconductor region of a second conductive type different from the first conductive type formed on upper surfaces of the second semiconductor region and the third semiconductor region. A PN junction is formed between the second semiconductor region and third semiconductor region and the fourth semiconductor region. The second semiconductor region is formed to surround the third semiconductor region.
    • 半导体器件包括:第一导电类型的第一半导体区域; 所述第一导电类型的第二半导体区域形成在所述第一半导体区域的上表面上并且具有比所述第一半导体区域的杂质浓度低的杂质浓度; 第一导电类型的第三半导体区域形成在第一半导体区域的上表面上并且具有比第二半导体区域的杂质浓度更高的杂质浓度; 以及形成在第二半导体区域和第三半导体区域的上表面上的与第一导电类型不同的第二导电类型的第四半导体区域。 在第二半导体区域和第三半导体区域与第四半导体区域之间形成PN结。 第二半导体区域形成为围绕第三半导体区域。
    • 10. 发明授权
    • Fuel vapor adsorption filters
    • 燃油蒸气吸附过滤器
    • US07416585B2
    • 2008-08-26
    • US11159823
    • 2005-06-23
    • Ryu Hirata
    • Ryu Hirata
    • B01D39/14F02M35/02
    • B01D53/0415B01D2253/102B01D2253/25B01D2257/702B01D2257/708B01D2258/012B01D2259/4516F02M25/08F02M35/024
    • A fuel vapor adsorption filter for mounting within an intake air channel connected to an engine extends across the intake air channel in order to adsorb fuel vapor within the intake air channel when the engine has been stopped. The filter includes an adsorbing agent for adsorbing the fuel vapor. A holding layer is formed by a first non-woven fabric and serves to contain and hold the adsorbing agent. The first non-woven fabric is formed of thermoplastic resin fibers. A cover layer is made of a second non-woven fabric and serves to cover at least one side of the holding layer opposing the downstream side of the intake air channel. The second non-woven fabric is formed of thermoplastic resin fibers. The resin fibers forming the second non-woven fabric of the cover layer have an average diameter between 100 μm and 330 μm.
    • 用于安装在连接到发动机的进气通道内的燃料蒸汽吸附过滤器延伸穿过进气通道,以便当发动机停止时吸附进气通道内的燃料蒸气。 该过滤器包括吸附燃料蒸气的吸附剂。 保持层由第一无纺布形成,用于容纳和保持吸附剂。 第一无纺布由热塑性树脂纤维形成。 覆盖层由第二无纺布制成并且用于覆盖与进气通道的下游侧相对的保持层的至少一侧。 第二无纺布由热塑性树脂纤维形成。 形成覆盖层的第二无纺布的树脂纤维的平均直径为100μm〜330μm。