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公开(公告)号：US20240171875A1
公开(公告)日：2024-05-23
申请号：US18056755
申请日：2022-11-18
发明人： Shankar RAMAKRISHNAN
CPC分类号： H04N5/378 , H04N5/3698
摘要： An image sensor may include an array of imaging pixels arranged in rows and columns. Each column of pixels can be coupled to a column analog-to-digital converter (ADC) via a pixel output line. The column ADC can include a first low noise single-ended comparison stage, a second low noise single-ended comparison stage, a latch circuit, and a counter. The first low noise single-ended comparison stage may include one or more current source transistors, a voltage ramp generator, a common source amplifier transistor, one or more autozero components, one or more capacitors such as a noise filtering capacitor, and a voltage clamping circuit. The voltage ramp generator can output an increasing voltage ramp or a decreasing voltage ramp.
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公开(公告)号：US20240162989A1
公开(公告)日：2024-05-16
申请号：US18055766
申请日：2022-11-15
申请人： Raytheon Company
CPC分类号： H04B10/40 , H04B10/07 , H04B10/691 , H04B10/801 , H04N5/378
摘要： An apparatus includes a focal plane array configured to receive incoming light. The apparatus also includes a readout integrated circuit configured to generate electrical signals based on the incoming light received by the focal plane array. The apparatus further includes a photonic integrated circuit positioned between the focal plane array and the readout integrated circuit. The photonic integrated circuit is configured to receive the electrical signals and generate output optical signals based on the electrical signals. In some cases, the apparatus may include electrically-conductive vias electrically coupling the focal plane array and the readout integrated circuit, where at least some of the electrically-conductive vias may extend through the photonic integrated circuit. The focal plane array, the readout integrated circuit, and the photonic integrated circuit may form at least part of a monolithic structure.
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公开(公告)号：US20240079440A1
公开(公告)日：2024-03-07
申请号：US17903067
申请日：2022-09-06
申请人： Apple Inc.
发明人： Oray O. Cellek , Fei Tan , Gershon Rosenblum , Hong Wei Lee , Cheng-Ying Tsai , Jae Y. Park , Christophe Verove , John L Orlowski , Siddharth Joshi , Xiangli Li , David Coulon , Xiaofeng Fan , Keith Lyon , Nicolas Hotellier , Arnaud Laflaquière
IPC分类号： H01L27/146 , H04N5/378
CPC分类号： H01L27/14652 , H01L27/14621 , H01L27/14636 , H01L27/1465 , H04N5/378
摘要： A multispectral sensing device includes a first die, including silicon, which is patterned to define a first array of sensor elements, which output first electrical signals in response to optical radiation that is incident on the device in a band of wavelengths less than 1000 nm that is incident on the front side of the first die. A second die has its first side bonded to the back side of the first die and includes a photosensitive material and is patterned to define a second array of sensor elements, which output second electrical signals in response to the optical radiation that is incident on the device in a second band of wavelengths greater than 1000 nm that passes through the first die and is incident on the first side of the second die. Readout circuitry reads the first electrical signals and the second electrical signals serially out of the device.
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公开(公告)号：US20240064432A1
公开(公告)日：2024-02-22
申请号：US17891963
申请日：2022-08-19
申请人： Apple Inc.
发明人： Hai Yan , Chiajen Lee
IPC分类号： H04N5/3745 , H04N5/378 , H01L27/146
CPC分类号： H04N5/3745 , H04N5/378 , H01L27/14636
摘要： Disclosed herein are electronic devices and image sensors containing pixel arrays, layouts of electrical signal lines for such pixel arrays, and methods of pixel read out operations, including row read operations, for such pixel arrays. Layouts are disclosed that have reduced sets of shielding or ground lines. In some layouts, shielding ground lines are used only between pairs of adjacent pixel output signal lines (OSLs). Also disclosed is a method of using one OSL within a pair of adjacent pixel OSLs to provide settling assist of the pixel output signal on the other OSL of the adjacent pair of OSLs.
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公开(公告)号：US20240015414A1
公开(公告)日：2024-01-11
申请号：US17810966
申请日：2022-07-06
发明人： Keiji Mabuchi , Tiejun Dai
CPC分类号： H04N5/3559 , H04N5/3591 , H04N5/378 , H04N5/347 , H04N5/379
摘要： A pixel circuit includes a first photodiode and a second photodiode. The first and second photodiodes photogenerate charge in response to incident light. A first transfer transistor is coupled to the first photodiode. A first floating diffusion is coupled to the first transfer transistor. A second transfer transistor is coupled to the second photodiode. A second floating diffusion is coupled to the second transfer transistor. A dual floating diffusion transistor is coupled between the first and second floating diffusions. An overflow transistor is coupled to the second photodiode. A capacitor is coupled between a voltage source and the overflow transistor. A capacitor readout transistor is coupled between the capacitor and the second floating diffusion. An anti-blooming transistor coupled between the first photodiode and a power line.
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公开(公告)号：US20230421922A1
公开(公告)日：2023-12-28
申请号：US17849403
申请日：2022-06-24
发明人： Zhe Gao , Chengcheng Xu , Dennis Tunglin Lee , Tiejun Dai
IPC分类号： H04N5/378 , H04N5/355 , H01L27/146
CPC分类号： H04N5/378 , H04N5/3559 , H01L27/14643 , H01L27/14612
摘要： Pixel designs with reduced LOFIC reset and settling times are disclosed herein. In one embodiment, a pixel cell includes a photosensor configured to photogenerate image charge in response to incident light, a floating diffusion to receive the image charge from the photosensor, a transfer transistor coupled between the floating diffusion and the photosensor to transfer the image charge to the floating diffusion, and a first reset transistor coupled between the floating diffusion and the voltage supply. The pixel cell further includes a capacitor having two ends, and a second reset transistor. A first end of the capacitor is coupled to the floating diffusion. The second reset transistor is coupled between a second end of the capacitor and the voltage supply.
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公开(公告)号：USRE49748E1
公开(公告)日：2023-12-05
申请号：US17225813
申请日：2021-04-08
申请人： GOOGLE LLC
IPC分类号： H04N5/378 , G01S17/08 , H04N25/13 , H04N13/254 , H04N13/286 , G01S17/86 , H04N25/705 , H04N25/75 , G01S7/481 , G01S17/89 , H01L27/146
CPC分类号： H04N25/134 , G01S7/4813 , G01S7/4816 , G01S17/08 , G01S17/86 , G01S17/89 , H04N13/254 , H04N13/286 , H04N25/705 , H04N25/75 , H01L27/14643 , H01L2224/16145 , H01L2224/16225 , H01L2924/15311 , H01L2924/16151 , H01L2924/16152
摘要： An apparatus is described that includes an image sensor and a light source driver circuit integrated in a same semiconductor chip package. The image sensor includes visible light pixels and depth pixels. The depth pixels are to sense light generated with a light source drive signal. The light source drive signal is generated with the light source driver circuit.
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公开(公告)号：US20230336889A1
公开(公告)日：2023-10-19
申请号：US17719602
申请日：2022-04-13
发明人： Zhenfu Tian , Hiroaki Ebihara , Tao Sun , Yi Liu , Shan Chen
CPC分类号： H04N5/378 , H03K4/08 , H04N5/3765
摘要： A ramp generator includes an operational amplifier having an output to generate a ramp signal. An integration current source is coupled to a first input and a reference voltage is coupled to a second input of the operational amplifier. A feedback capacitor is coupled between the first input and the output of the operational amplifier. A monitor circuit is coupled to the first and second inputs of the operational amplifier to generate an output flag in response to a comparison of the first and second inputs. A trimming control circuit is configured to generate a trimming signal in response to the output flag. An assist current source is configured to conduct an assist current from the output of the operational amplifier to ground in response the trimming signal generated by the trimming control circuit.
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公开(公告)号：US20230336165A1
公开(公告)日：2023-10-19
申请号：US17659041
申请日：2022-04-13
发明人： Tao Sun
摘要： A ramp generator includes an operational amplifier having an output to generate a ramp signal. An integration current source is coupled to a first input and a reference voltage is coupled to a second input of the operational amplifier. A feedback capacitor and a reset switch are coupled between the first input and the output of the operational amplifier. The reset switch is turned on to reset the ramp generator. A ramp event is configured to be generated in the ramp signal at the output of the operational amplifier in response to the reset switch being turned off. An assist current source is coupled between the output of the operational amplifier and ground. The assist current source is configured to conduct an assist current from the output of the operational amplifier to ground in response to the reset switch being turned off.
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10.发明公开公开(公告)号：US20230328405A1
公开(公告)日：2023-10-12
申请号：US17658559
申请日：2022-04-08
发明人： Xuelian Liu , Min Qu , Liang Zuo , Selcuk Sen , Hiroaki Ebihara , Rui Wang , Lihang Fan
CPC分类号： H04N5/3698 , H04N5/36961 , H04N5/378
摘要： An imaging device includes a pixel array of pixel circuits arranged in rows and columns. Bitlines are coupled to the pixel circuits. Clamp circuits are coupled to the bitlines. Each of the clamp circuits includes a clamp short transistor to a power line and a respective one of the bitlines. The clamp short transistor is configured to be switched in response to a clamp short enable signal. A first diode drop device is coupled to the power line. A clamp idle transistor is coupled to the first diode drop device such that the first diode drop device and the clamp idle transistor are coupled between the power line and the respective one of the bitlines. The clamp idle transistor is configured to be switched in response to a clamp idle enable signal.
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