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    • 4. 发明申请
    • PHOTODETECTORS USEFUL AS AMBIENT LIGHT SENSORS
    • 光电传感器可用作环境光传感器
    • US20110068255A1
    • 2011-03-24
    • US12885297
    • 2010-09-17
    • Dong ZhengXijian LinJoy Jones
    • Dong ZhengXijian LinJoy Jones
    • H01L27/144
    • H01L27/1446G01J1/0488G01J1/4204G01J1/4228H01L27/14621H01L27/14623
    • A photodetector includes one or more first photodiode regions that are covered by an optical filter configured to reject infrared (IR) light and that produce a first current (I1). The photodetector also includes one or more second photodiode regions that are covered by a light blocking material configured to reject visible and infrared light and that produce a second current (I2). The photodetector also includes one or more third photodiode regions that are not covered by the optical filter and are not covered by the light blocking material and that produce a third current (I3). Additionally, the photodetector includes circuitry configured to produce an output indicative of the first current (I1) or a scaled version of the first current (I1), minus the second current (I2) or a scaled version of the second current (I2), minus the third current (I3) or a scaled version of the third current (I3). The optical filter configured to reject IR light can be, e.g., a dielectric reflective optical coating filter, an IR absorption optical coating filter, or a combination thereof.
    • 光电检测器包括一个或多个第一光电二极管区域,其被被配置为抑制红外(IR)光并且产生第一电流(I1))的滤光器覆盖。 光电检测器还包括被遮光材料覆盖的一个或多个第二光电二极管区域,所述遮光材料构造成阻止可见光和红外光并产生第二电流(I2)。 光电检测器还包括一个或多个未被光学滤波器覆盖并且不被遮光材料覆盖并且产生第三电流(I3)的第三光电二极管区域。 另外,光电检测器包括经配置以产​​生指示第一电流(I1)或第一电流(I1)的缩放版本,减去第二电流(I2)或第二电流(I2)的缩放版本的输出的输出, 减去第三个电流(I3)或第三个电流(I3)的缩放版本。 被配置为抑制IR光的滤光器可以是例如介电反射光学涂层滤光器,IR吸收光学涂层滤光器或其组合。
    • 9. 发明授权
    • Photodetectors useful as ambient light sensors having an optical filter rejecting a portion of infrared light
    • 用作环境光传感器的光检测器,其具有拒绝红外光的一部分的滤光器
    • US08492699B2
    • 2013-07-23
    • US12885297
    • 2010-09-17
    • Dong ZhengXijian LinJoy Jones
    • Dong ZhengXijian LinJoy Jones
    • G01J1/44H01J5/16H03F3/08
    • H01L27/1446G01J1/0488G01J1/4204G01J1/4228H01L27/14621H01L27/14623
    • A photodetector includes one or more first photodiode regions that are covered by an optical filter configured to reject infrared (IR) light and that produce a first current (I1). The photodetector also includes one or more second photodiode regions that are covered by a light blocking material configured to reject visible and infrared light and that produce a second current (I2). The photodetector also includes one or more third photodiode regions that are not covered by the optical filter and are not covered by the light blocking material and that produce a third current (I3). Additionally, the photodetector includes circuitry configured to produce an output indicative of the first current (I1) or a scaled version of the first current (I1), minus the second current (I2) or a scaled version of the second current (I2), minus the third current (I3) or a scaled version of the third current (I3). The optical filter configured to reject IR light can be, e.g., a dielectric reflective optical coating filter, an IR absorption optical coating filter, or a combination thereof.
    • 光电检测器包括一个或多个第一光电二极管区域,其被被配置为抑制红外(IR)光并且产生第一电流(I1))的滤光器覆盖。 光电检测器还包括被遮光材料覆盖的一个或多个第二光电二极管区域,所述遮光材料构造成阻止可见光和红外光并产生第二电流(I2)。 光电检测器还包括一个或多个未被光学滤波器覆盖并且不被遮光材料覆盖并且产生第三电流(I3)的第三光电二极管区域。 另外,光电检测器包括经配置以产​​生指示第一电流(I1)或第一电流(I1)的缩放版本,减去第二电流(I2)或第二电流(I2)的缩放版本的输出的输出, 减去第三个电流(I3)或第三个电流(I3)的缩放版本。 被配置为抑制IR光的滤光器可以是例如介电反射光学涂层滤光器,IR吸收光学涂层滤光器或其组合。