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    • 4. 发明专利
    • Integrated photodiode for semiconductor substrates
    • 用于半导体衬底的集成光电二极管
    • JP2014140065A
    • 2014-07-31
    • JP2014075479
    • 2014-04-01
    • Tau-Metrix Incタウ−メトリックス インコーポレイテッドTau−Metrix, Inc.
    • GARY L STEINBRUECKJAMES B VICKERSPELELLA MARIO MMAJID AGHABABAZADEH
    • H01L31/10
    • H01L31/1016H01L27/1443H01L27/14603H01L27/14689H01L31/1037
    • PROBLEM TO BE SOLVED: To provide a photodiode that is nonreactive to light incident into a silicon wafer except for a sensitive region (a P-type small region in an N-type well).SOLUTION: There is provided a semiconductor substrate that is partially fabricated to include contact elements and materials. The semiconductor substrate includes doped regions that have a heavily doped N-type region 124 and a heavily doped P-type region 122 adjacent to each other. An exterior surface of the substrate has a topography that includes a light-transparent region in which light, from a light source, is able to reach a surface of the substrate. An application of light onto the light transparent region is sufficient to cause a voltage potential to form across a junction of the heavily doped regions. The substrate further includes one or more electrical contacts, positioned on the substrate to conduct current, resulting from the voltage potential created with application of light onto the light transparent region, to a circuit on the semiconductor substrate.
    • 要解决的问题:提供对敏感区域(N型阱中的P型小区域)以外的入射到硅晶片的光无反应性的光电二极管。解决方案:提供部分地 制造成包括接触元件和材料。 半导体衬底包括具有重掺杂N型区124和相互邻近的重掺杂P型区122的掺杂区。 衬底的外表面具有包括光透射区域的形貌,其中来自光源的光能够到达衬底的表面。 在光透射区域上的光的施加足以在重掺杂区域的结的两端形成电压电位。 衬底还包括位于衬底上的一个或多个电触点,以将导致由在光透明区域上施加光产生的电压电位导致的电流传导到半导体衬底上的电路。