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    • 1. 发明授权
    • Light-receiving module and light-receiving device having malfunction preventing structure
    • 光接收模块和具有故障防止结构的光接收装置
    • US06989522B2
    • 2006-01-24
    • US10332540
    • 2001-07-06
    • Susumu Nishimura
    • Susumu Nishimura
    • H01L31/00
    • H01L31/103H01L31/02005
    • A light-receiving device has a high-concentration impurity layer of a first conductivity type and a high-concentration impurity layer of a second conductivity type surrounding it formed on a substrate of the first conductivity type having a low impurity concentration so as to function as a light-receiving portion. The high-concentration impurity layers of the first and second conductivity types are arranged in the same direction as the top surface of the substrate. A layer having a short carrier life time is formed on the bottom surface of the substrate. Thus, carriers ascribable to unnecessary light components that have reached the layer having a short carrier life time have a shorter life time, making it possible to sufficiently cut unnecessary long-wavelength light components.
    • 光接收装置具有第一导电类型的高浓度杂质层和围绕它的第二导电类型的高浓度杂质层,其形成在具有低杂质浓度的第一导电类型的衬底上,以起到 光接收部分。 第一和第二导电类型的高浓度杂质层布置在与基板的顶表面相同的方向上。 在衬底的底表面上形成具有短载体寿命的层。 因此,归因于已经到达具有短载体寿命的层的不必要的光成分的载体具有更短的寿命,使得可以充分地切断不必要的长波长光成分。
    • 7. 发明授权
    • 7-deazapurine derivatives useful as antitumor agents
    • 可用作抗肿瘤剂的7-脱氮嘌呤衍生物
    • US4650868A
    • 1987-03-17
    • US729202
    • 1985-05-01
    • Susumu NishimuraHiroaki NomuraHiroshi Akimoto
    • Susumu NishimuraHiroaki NomuraHiroshi Akimoto
    • A61K31/505A61P35/00C07D487/04C07F7/10C07F7/18C07D471/02
    • C07D487/04Y02P20/55
    • 7-Deazapurine derivatives of the formula: ##STR1## wherein R.sup.1 is phenyl which has, at the ortho position and/or para position as substituents, at least one group represented by the formula --O--R.sup.3, --S--R.sup.4 or ##STR2## (wherein R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same or different and each is hydrogen or an alkyl or phenyl group which may be substituted, whereby R.sup.5 and R.sup.6, together with the adjacent nitrogen atom, may form a cyclic amino group which may be substituted, and R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each may represent a protective group), and may have a group or groups with a molecular weight of up to about 200 as a substituent at any position other than those having the said substituents introduced; R.sup.2 is an amino group which may be protected, or its salt, have a potent antitumor activity, and hence the compounds are useful as an antitumor agent.
    • 其中R 1是在取代基的邻位和/或对位具有至少一个由式-O-R 3,-S-R 4或(其中R 3,R 4,R 5和R 6相同或不同,各自为氢或可被取代的烷基或苯基,其中R 5和R 6与相邻的氮原子一起可形成环状氨基, 并且R 3,R 4,R 5和R 6各自可以表示保护基),并且可以具有除了引入了所述取代基的那些以外的任何位置具有至多约200的分子量的基团作为取代基的基团; R2是可被保护的氨基或其盐具有有效的抗肿瘤活性,因此该化合物可用作抗肿瘤剂。
    • 8. 发明授权
    • Light-receiving element and photonic semiconductor device provided therewith
    • 光接收元件及其提供的光子半导体器件
    • US07777234B2
    • 2010-08-17
    • US10380861
    • 2001-09-27
    • Susumu NishimuraShoji HondaKoji Ueyama
    • Susumu NishimuraShoji HondaKoji Ueyama
    • H01L27/15
    • H01L31/173H01L25/167H01L31/103H01L2224/05568H01L2224/05573H01L2224/16145H01L2224/48091H01L2224/48247H01L2224/48257H01L2924/00014H01S5/02208H01S5/02244H01S5/02248H01S5/0683H01L2224/05599
    • A light-receiving element has a photodiode formed in part of the top surface of a semiconductor substrate so as to function as a light-receiving region, and has a light-emitting element mount electrode formed on top of the semiconductor substrate where the light-receiving region is not formed. A high concentration impurity layer is formed below the top surface of the semiconductor substrate along the peripheral edges of the light-emitting element mount electrode. This helps prevent the voltage applied to the light-emitting element mount electrode from influencing the output of the light-receiving element.Alternatively, a photonic semiconductor device has a light-emitting element and a light-receiving element, and has the light-receiving region of the light-receiving element formed parallel to the direction in which the light-emitting element emits light. The light-emitting element is arranged so that, when viewed in a plan view, the light-emitting point thereof overlaps with at least part of the light-receiving region. This permits easy fitting of the light-emitting element even with a low light-emitting point, and thus helps reduce variation in light reception sensitivity.
    • 光接收元件具有形成在半导体衬底的顶表面的一部分中以用作光接收区域的光电二极管,并且具有形成在半导体衬底的顶部上的发光元件安装电极, 不形成接收区域。 沿着发光元件安装电极的周缘形成在半导体衬底的顶表面下方的高浓度杂质层。 这有助于防止施加到发光元件安装电极的电压影响光接收元件的输出。 或者,光子半导体器件具有发光元件和受光元件,并且具有与发光元件发光的方向平行的光接收元件的受光区域。 发光元件布置成使得当在平面图中观察时,其发光点与光接收区域的至少一部分重叠。 这使得发光元件即使在低发光点也容易安装,从而有助于减少光接收灵敏度的变化。