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公开(公告)号：US12113088B2
公开(公告)日：2024-10-08
申请号：US17311838
申请日：2019-11-29
IPC分类号： H01L27/146 , G01J1/44 , H01L31/107
CPC分类号： H01L27/14636 , G01J1/44 , H01L31/107 , G01J2001/4466
摘要： In a light detection device, the semiconductor substrate has first and second main surfaces facing each other. The semiconductor substrate includes a plurality of cells. Each of the plurality of cells includes at least one avalanche photodiode. The plurality of pad electrodes are arranged on the first main surface so as to be spaced apart from the plurality of cells. The plurality of wiring portions are arranged on the first main surface. Each of the plurality of wiring portions connects the cell and the pad electrode corresponding to each other. The semiconductor substrate includes a peripheral carrier absorbing portion configured to absorb carriers located at a periphery of the peripheral carrier absorbing portion. The peripheral carrier absorbing portion is provided around each pad electrode and each wiring portion when viewed from a direction perpendicular to the first main surface.
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公开(公告)号：US11901379B2
公开(公告)日：2024-02-13
申请号：US17311824
申请日：2019-11-29
IPC分类号： H01L27/144 , H01L31/107 , G01J1/44
CPC分类号： H01L27/1446 , G01J1/44 , H01L31/107
摘要： In a light detection device 1 the plurality of pad electrodes are arranged on the semiconductor substrate. Each of the plurality of wires is connected to the pad electrode corresponding thereto. A stitch bond of a corresponding wire is formed on each pad electrode. A distance between each pad electrode and a cell corresponding to the pad electrode is smaller than a distance between the pad electrodes connected to mutually different cells of the cells. The plurality of pad electrodes are arranged in a first region and a second region that are spaced apart from each other with a light receiving region interposed therebetween. The pad electrode corresponding to a cell is arranged in the first region. The pad electrode corresponding to a cell is arranged in the second region.
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