公开(公告)号：US08309994B2

公开(公告)日：2012-11-13

申请号：US13101667

申请日：2011-05-05

申请人： Alexander Kalnitsky ,  Dong Zheng ,  Joy Jones ,  Xijian Lin ,  Gregory Cestra

发明人： Alexander Kalnitsky ,  Dong Zheng ,  Joy Jones ,  Xijian Lin ,  Gregory Cestra

IPC分类号： H01L31/062

CPC分类号： H01L31/103 ,  H01L27/1443 ,  H01L31/02162

摘要： Embodiments of the present invention are directed to light sensors that primarily respond to visible light while suppressing infrared light. Such sensors are especially useful as ambient light sensors because such sensors can be used to provide a spectral response similar to that of a human eye. Embodiments of the present invention are also directed to methods of providing such light sensors, and methods for using such light sensors.

摘要翻译： 本发明的实施例涉及在抑制红外光的同时主要响应于可见光的光传感器。 这种传感器作为环境光传感器是特别有用的，因为这样的传感器可用于提供类似于人眼的光谱响应。 本发明的实施例还涉及提供这种光传感器的方法，以及使用这种光传感器的方法。

公开(公告)号：US20110204237A1

公开(公告)日：2011-08-25

申请号：US13101667

申请日：2011-05-05

申请人： Alexander Kalnitsky ,  Dong Zheng ,  Joy Jones ,  Xijian Lin ,  Gregory Cestra

发明人： Alexander Kalnitsky ,  Dong Zheng ,  Joy Jones ,  Xijian Lin ,  Gregory Cestra

IPC分类号： G01J5/02 ,  H01L27/146

CPC分类号： H01L31/103 ,  H01L27/1443 ,  H01L31/02162

摘要： Embodiments of the present invention are directed to light sensors that primarily respond to visible light while suppressing infrared light. Such sensors are especially useful as ambient light sensors because such sensors can be used to provide a spectral response similar to that of a human eye. Embodiments of the present invention are also directed to methods of providing such light sensors, and methods for using such light sensors.

摘要翻译： 本发明的实施例涉及在抑制红外光的同时主要响应于可见光的光传感器。 这种传感器作为环境光传感器是特别有用的，因为这样的传感器可用于提供类似于人眼的光谱响应。 本发明的实施例还涉及提供这种光传感器的方法，以及使用这种光传感器的方法。

公开(公告)号：US20110068255A1

公开(公告)日：2011-03-24

申请号：US12885297

申请日：2010-09-17

申请人： Dong Zheng ,  Xijian Lin ,  Joy Jones

发明人： Dong Zheng ,  Xijian Lin ,  Joy Jones

IPC分类号： H01L27/144

CPC分类号： H01L27/1446 ,  G01J1/0488 ,  G01J1/4204 ,  G01J1/4228 ,  H01L27/14621 ,  H01L27/14623

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07907061B2

公开(公告)日：2011-03-15

申请号：US12101047

申请日：2008-04-10

申请人： Xijian Lin ,  Zhong Li ,  Wendy Ng ,  Phillip J. Benzel ,  Oleg Steciw

发明人： Xijian Lin ,  Zhong Li ,  Wendy Ng ,  Phillip J. Benzel ,  Oleg Steciw

IPC分类号： G08B21/00

CPC分类号： G06F1/3203 ,  G06F1/3231 ,  Y02D10/173

摘要： In an embodiment, a proximity sensor includes a driver, a photo-diode (PD) and an analog-to-digital converter (ADC). The proximity sensor can also include a controller to control the driver. The driver selectively drives a light source, e.g., an infrared (IR) light emitting diode (LED). The PD, which produces a current signal indicative of the intensity of light detected by the PD, is capable of detecting both ambient light and light produced by the light source that is reflected off an object. The ADC receives one or more portion of the current signal produced by the PD. The ADC produces one or more digital output that can be used to estimate the proximity of an object to the PD in a manner that compensates for ambient light detected by the PD and transient changes to the detected ambient light.

摘要翻译： 在一个实施例中，接近传感器包括驱动器，光电二极管（PD）和模数转换器（ADC）。 接近传感器还可以包括用于控制驾驶员的控制器。 驱动器选择性地驱动光源，例如红外（IR）发光二极管（LED）。 产生指示由PD检测到的光强度的电流信号的PD能够检测环境光和由物体反射的光源产生的光。 ADC接收由PD产生的当前信号的一个或多个部分。 ADC产生一个或多个数字输出，其可以用于以补偿由PD检测到的环境光和对所检测到的环境光的瞬态变化的方式来估计物体与PD的接近度。

公开(公告)号：US20100252871A1

公开(公告)日：2010-10-07

申请号：US12817101

申请日：2010-06-16

申请人： Alexander Kalnitsky ,  Dong Zheng ,  Joy Jones ,  Xijian Lin ,  Gregory Cestra

发明人： Alexander Kalnitsky ,  Dong Zheng ,  Joy Jones ,  Xijian Lin ,  Gregory Cestra

IPC分类号： H01L31/062 ,  H01L27/146

CPC分类号： H01L31/103 ,  H01L27/1443 ,  H01L31/02162

摘要： Embodiments of the present invention are directed to light sensors, that primarily respond to visible light while suppressing infrared light. Such sensors are especially useful as ambient light sensors because such sensors can be used to provide a spectral response similar to that of a human eye. Embodiments of the present invention are also directed to methods of providing such light sensors, and methods for using such light sensors.

摘要翻译： 本发明的实施例涉及在抑制红外光的同时主要响应于可见光的光传感器。 这种传感器作为环境光传感器是特别有用的，因为这样的传感器可用于提供类似于人眼的光谱响应。 本发明的实施例还涉及提供这种光传感器的方法，以及使用这种光传感器的方法。

公开(公告)号：US20130120761A1

公开(公告)日：2013-05-16

申请号：US13360168

申请日：2012-01-27

申请人： Kenneth C. Dyer ,  Xijian Lin

发明人： Kenneth C. Dyer ,  Xijian Lin

IPC分类号： G01B11/14

CPC分类号： G01S7/481 ,  G01C3/08 ,  G01S7/4912 ,  G01S17/026

摘要： An optical proximity sensor includes a driver, light detector and offset signal generator. The driver selectively drives a light source. The light detector produces an analog detection signal indicative of an intensity of light detected by the light detector. The detected light can include light transmitted by the light source that reflected off an object within the sense region of the optical sensor, interference light and ambient light. The interference light includes light transmitted by the light source, and detected by the light detector, that was not reflected off an object within the sense region of the optical sensor. The offset signal generator selectively produces an analog offset signal that is combined with the analog detection signal produced by the photodetector to produce an analog compensated detection signal. The analog offset signal compensates for at least a portion of the interference light included in the light detected by the photodetector.

摘要翻译： 光学接近传感器包括驱动器，光检测器和偏移信号发生器。 驱动器选择性地驱动光源。 光检测器产生指示由光检测器检测到的光的强度的模拟检测信号。 检测到的光可以包括由光源透射的光，该光从光学传感器的感测区域内的物体反射，干涉光和环境光。 干涉光包括由光源透射并由光检测器检测到的光，其不被光学传感器的感测区域内的物体反射。 偏移信号发生器选择性地产生与由光电检测器产生的模拟检测信号组合以产生模拟补偿检测信号的模拟偏移信号。 模拟偏移信号补偿光检测器检测到的光中包含的干涉光的至少一部分。

公开(公告)号：US07960807B2

公开(公告)日：2011-06-14

申请号：US11686311

申请日：2007-03-14

申请人： Xijian Lin ,  Phillip J. Benzel ,  Bjoy Santos ,  Joy Jones

发明人： Xijian Lin ,  Phillip J. Benzel ,  Bjoy Santos ,  Joy Jones

IPC分类号： H01L31/0232

CPC分类号： G01J1/4228 ,  G01J1/0488 ,  G01J1/4204 ,  G01J3/465 ,  G01J3/513 ,  G01J2003/516 ,  H01L27/14621 ,  H01L27/14643 ,  H01L27/14685 ,  H01L27/14689 ,  H04N9/045

摘要： A CMOS light detector configured to detect specific wavelengths of light includes a first sensor and a second sensor. The first sensor includes CMOS photocells that are covered by a colored filter layer of a first color that has a first transmittance that allows both light of the specific wavelengths and light of other wavelengths to pass. The second sensor including further CMOS photocells, at least some of which are covered by both a colored filter layer of the first color and a colored filter layer of a second color, stacked one above the other in either order, where the colored filter layer of the second color has a second transmittance that allows light of the other wavelengths to pass. The first sensor produces a first photocurrent, and the second sensor produces a second photocurrent, when light including both the specific and other wavelengths is incident upon the detector. A differential photocurrent, produced by determining a difference between the first and second photocurrents, has a spectral response with at least part of the light of other wavelengths cancelled.

摘要翻译： 被配置为检测特定波长的光的CMOS光检测器包括第一传感器和第二传感器。 第一传感器包括由具有第一透射率的第一颜色的着色滤光层覆盖的CMOS光电管，其允许特定波长的光和其它波长的光通过。 第二传感器包括进一步的CMOS光电管，其中至少一些由第一颜色的有色滤光层和第二颜色的有色滤光层两者以任何顺序叠加在一起，其中彩色滤光层 第二种颜色具有允许其它波长的光通过的第二透射率。 第一传感器产生第一光电流，并且当包括特定波长和其它波长的光入射到检测器上时，第二传感器产生第二光电流。 通过确定第一和第二光电流之间的差产生的差分光电流具有光谱响应，其中至少部分其它波长的光被消除。

公开(公告)号：US20080191298A1

公开(公告)日：2008-08-14

申请号：US11686311

申请日：2007-03-14

申请人： Xijian Lin ,  Philip J. Benzel ,  Bjoy Santos ,  Joy Jones

发明人： Xijian Lin ,  Philip J. Benzel ,  Bjoy Santos ,  Joy Jones

IPC分类号： H01L31/00 ,  H01L21/98

CPC分类号： G01J1/4228 ,  G01J1/0488 ,  G01J1/4204 ,  G01J3/465 ,  G01J3/513 ,  G01J2003/516 ,  H01L27/14621 ,  H01L27/14643 ,  H01L27/14685 ,  H01L27/14689 ,  H04N9/045

摘要： A CMOS light detector configured to detect specific wavelengths of light includes a first sensor and a second sensor. The first sensor includes CMOS photocells that are covered by a colored filter layer of a first color that has a first transmittance that allows both light of the specific wavelengths and light of other wavelengths to pass. The second sensor including further CMOS photocells, at least some of which are covered by both a colored filter layer of the first color and a colored filter layer of a second color, stacked one above the other in either order, where the colored filter layer of the second color has a second transmittance that allows light of the other wavelengths to pass. The first sensor produces a first photocurrent, and the second sensor produces a second photocurrent, when light including both the specific and other wavelengths is incident upon the detector. A differential photocurrent, produced by determining a difference between the first and second photocurrents, has a spectral response with at least part of the light of other wavelengths cancelled.

摘要翻译： 被配置为检测特定波长的光的CMOS光检测器包括第一传感器和第二传感器。 第一传感器包括由具有第一透射率的第一颜色的着色滤光层覆盖的CMOS光电管，其允许特定波长的光和其它波长的光通过。 第二传感器包括进一步的CMOS光电管，其中至少一些由第一颜色的有色滤光层和第二颜色的有色滤光层两者以任何顺序叠加在一起，其中彩色滤光层 第二种颜色具有允许其它波长的光通过的第二透射率。 第一传感器产生第一光电流，并且当包括特定波长和其它波长的光入射到检测器上时，第二传感器产生第二光电流。 通过确定第一和第二光电流之间的差产生的差分光电流具有光谱响应，其中至少部分其它波长的光被消除。

公开(公告)号：US20080135968A1

公开(公告)日：2008-06-12

申请号：US11621443

申请日：2007-01-09

申请人： Alexander Kalnitsky ,  Dong Zheng ,  Joy Jones ,  Xijian Lin ,  Gregory Cestra

发明人： Alexander Kalnitsky ,  Dong Zheng ,  Joy Jones ,  Xijian Lin ,  Gregory Cestra

IPC分类号： H01L31/02

CPC分类号： H01L31/103 ,  H01L27/1443 ,  H01L31/02162

摘要： Embodiments of the present invention are directed to light sensors, that primarily respond to visible light while suppressing infrared light. Such sensors are especially useful as ambient light sensors because such sensors can be used to provide a spectral response similar to that of a human eye. Embodiments of the present invention are also directed to methods of providing such light sensors, and methods for using such light sensors.

摘要翻译： 本发明的实施例涉及在抑制红外光的同时主要响应于可见光的光传感器。 这种传感器作为环境光传感器是特别有用的，因为这样的传感器可用于提供类似于人眼的光谱响应。 本发明的实施例还涉及提供这种光传感器的方法，以及使用这种光传感器的方法。

公开(公告)号：US06300834B1

公开(公告)日：2001-10-09

申请号：US09735216

申请日：2000-12-12

申请人： Xijian Lin

发明人： Xijian Lin

IPC分类号： H03F345

CPC分类号： H03F3/3028 ,  H03F3/45192 ,  H03F3/45219 ,  H03F2203/45626

摘要： An intermediate stage for a rail-to-rail input/output CMOS opamp includes a floating current source separating two current mirrors (151-154,155-158), where the ideal current source includes a floating current mirror (500,501,502,503,504,505) enabling an output quiescent current to be provided which does not vary with changes in the voltage rails or the common-mode input voltage, and enabling elimination of input offset caused by the mismatch of the two current sources (164,166). The NMOS transistor (502) has a source-drain path provided in series with a PMOS transistor (505) serving to connect the current mirrors (151-154) and (155-158) and to eliminate input offset. The source of transistor (500) is separated from the VSS and VDD rails by a PMOS transistor 503 and current source (508) enabling the current mirror (500,501,502,503,504,505) to float so that transistors (502) and (505) will each have a gate to source bias voltage independent of changes in the voltage on the voltage supply rails VDD and VSS and independent of any input common-mode voltage offset. Voltage clamping transistors (600) and (602) can further be included to enable the current mirror transistors (151-154) and (155-158) to be low voltage devices to increase overall operation speed and device matching.

摘要翻译： 用于轨至轨输入/输出CMOS运算放大器的中间级包括分离两个电流镜（151-154,155-158）的浮动电流源，其中理想电流源包括能够输出静态电流的浮动电流镜（500,501,502,503,504,505） 被提供，其不随电压轨或共模输入电压的变化而变化，并且能够消除由两个电流源（164,166）的失配引起的输入偏移。 NMOS晶体管（502）具有与用于连接电流镜（151-154）和（155-158）并且消除输入偏移的PMOS晶体管（505）串联设置的源极 - 漏极路径。 晶体管（500）的源极通过PMOS晶体管503和使电流镜（500,501,502,503,504,505）浮动的电流源（508）与VSS和VDD导轨分离，使得晶体管（502）和（505）将各自具有栅极 以独立于电源电压轨VDD和VSS上的电压变化来源偏置电压，并且与任何输入共模电压偏移无关。 还可以包括电压钳位晶体管（600）和（602），以使电流镜晶体管（151-154）和（155-158）成为低电压器件，以增加总体操作速度和器件匹配。