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公开(公告)号：US12120446B2
公开(公告)日：2024-10-15
申请号：US18008302
申请日：2021-07-12
IPC分类号： H04N25/77
CPC分类号： H04N25/77
摘要： An imaging device that has an image processing function and is capable of operating at high speed is provided. The imaging device has an additional function such as image processing, image data obtained by an imaging operation is binarized in a pixel unit, and a product-sum operation is performed using the binarized data. A memory circuit is provided in the pixel unit and retains a weight coefficient used for the product-sum operation. Thus, an arithmetic operation can be performed without the weight coefficient read from the outside every time, whereby power consumption can be reduced. Furthermore, a pixel circuit, a memory circuit, and the like and a product-sum operation circuit and the like are stacked, so that the lengths of wirings between the circuits can be reduced, and high-speed operation with low power consumption can be performed.
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公开(公告)号：US11335813B2
公开(公告)日：2022-05-17
申请号：US17054926
申请日：2019-05-23
IPC分类号： G11C16/04 , H01L29/786 , G11C11/4074 , G11C11/4096 , H01L27/108 , H01L29/66
摘要： A semiconductor device in which the accuracy of arithmetic operation is increased by correction of the threshold voltage of a transistor can be provided. The semiconductor device includes first and second current supply circuits, and the second current supply circuit has the same configuration as the first current supply circuit. The first current supply circuit includes first and second transistors, a first capacitor, and first to third nodes. A first terminal of the first transistor is electrically connected to the first node, and a back gate of the first transistor is electrically connected to a first terminal of the second transistor and a first terminal of the first capacitor. A gate of the first transistor is electrically connected to the second node, and a second terminal of the first capacitor is electrically connected to a second terminal of the first transistor. The first node of the first current supply circuit is electrically connected to a second node of each of the first and second current supply circuits. The threshold voltage of the first transistor is corrected by writing a correction voltage to the back gate of the first transistor.
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公开(公告)号：US12126344B2
公开(公告)日：2024-10-22
申请号：US18008287
申请日：2021-07-12
发明人： Takeya Hirose , Seiichi Yoneda , Yusuke Negoro
IPC分类号： H03K3/356 , H01L29/786
CPC分类号： H03K3/35613 , H01L29/78648 , H01L29/7869
摘要： A semiconductor device with low power consumption can be provided. The semiconductor device includes a differential circuit and a latch circuit, the differential circuit includes a transistor including an oxide semiconductor in a channel formation region, and the latch circuit includes a transistor including a single semiconductor or a compound semiconductor in a channel formation region. The differential circuit and the latch circuit include an overlap region.
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公开(公告)号：US11888446B2
公开(公告)日：2024-01-30
申请号：US17607943
申请日：2020-04-27
IPC分类号： H03D7/14 , H03D7/12 , H01L27/12 , H01L29/786 , H10B12/00
CPC分类号： H03D7/12 , H01L27/1207 , H01L27/1225 , H01L27/1255 , H01L29/7869 , H01L29/78648 , H10B12/00
摘要： A semiconductor device with a novel structure is provided. The semiconductor device includes a mixer circuit including a digital-analog converter circuit, a control circuit for controlling the digital-analog converter circuit, a power source control switch, and a plurality of Gilbert circuits. The plurality of Gilbert circuits each include an analog potential holding circuit for holding an analog potential output from the digital-analog converter circuit. The control circuit has a function of outputting a signal for controlling the analog potential holding circuit and the digital-analog converter circuit. The power source control switch has a function of stopping supply of a power source voltage to the control circuit in a period during which the analog potential held in the analog potential holding circuit is not updated. The analog potential holding circuit includes a first transistor. The first transistor includes a semiconductor layer including an oxide semiconductor in a channel formation region.
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公开(公告)号：US12085728B2
公开(公告)日：2024-09-10
申请号：US18182604
申请日：2023-03-13
发明人： Takeya Hirose , Ryo Hatsumi , Hisao Ikeda , Daiki Nakamura , Yosuke Tsukamoto
CPC分类号： G02B27/286 , G02B27/144
摘要： An optical device with less influence of stray light is provided. The optical device is thin and includes a half mirror, a first lens, a retardation plate, a reflective polarizing plate, and a second lens. In the optical device, a geometric phase lens which has negative and positive refractive power is used as the first lens, whereby images can be focused after magnified optically. Thus, the optical device can have a wide viewing angle. In the case where stray light occurs due to birefringence of an optical material, negative refractive power of the first lens can prevent the stray light from being focused on the eye direction. Accordingly, image degradation recognized due to stray light can be prevented.
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公开(公告)号：US11842002B2
公开(公告)日：2023-12-12
申请号：US17760603
申请日：2020-09-22
发明人： Kei Takahashi , Hidetomo Kobayashi , Hajime Kimura , Takeshi Osada , Hideaki Shishido , Kiyotaka Kimura , Shuichi Katsui , Takeya Hirose , Takayuki Ikeda
IPC分类号： G09G3/3233 , G09G3/3266 , G09G3/3275 , G06F3/041 , G06F3/042 , H01L27/12 , H10K30/88 , H10K50/844 , H10K50/858 , H04N25/70 , H10K59/40 , H10K59/65 , H10K65/00
CPC分类号： G06F3/0412 , G06F3/0421 , G09G3/3233 , G09G3/3266 , G09G3/3275 , H01L27/1207 , H10K30/88 , H10K50/844 , H10K50/858 , G09G2300/0426 , G09G2300/0842 , G09G2310/08 , G09G2320/0233 , G09G2320/0295 , G09G2354/00 , G09G2360/14 , H04N25/70 , H10K59/40 , H10K59/65 , H10K65/00
摘要： To provide an inexpensive display device. The display device includes a pixel and an IC chip. The pixel includes a first pixel circuit including a display element and a second pixel circuit including a light-receiving device. The one IC chip includes a control circuit, a data driver circuit, and a read circuit. The first and second pixel circuits are electrically connected to the read circuit. The control circuit has a function of controlling driving of the data driver circuit and the read circuit. The data driver circuit has a function of supplying image data to the first pixel circuit. The read circuit has a function of outputting a monitor signal corresponding to a monitor current when the monitor current flows through the first pixel circuit. The read circuit also has a function of outputting an imaging signal corresponding to imaging data acquired by the second pixel circuit.
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公开(公告)号：US20230228970A1
公开(公告)日：2023-07-20
申请号：US18095117
申请日：2023-01-10
发明人： Takeya Hirose , Hisao IKEDA , Ryo HATSUMI , Daiki NAKAMURA , Yosuke TSUKAMOTO
CPC分类号： G02B7/28 , H10K39/34 , H10K59/879 , G06F1/163 , H10K59/35
摘要： A method for operating an electronic device, which is easy on eyes, is provided. The electronic device includes a display device including a light-emitting device and a light-receiving device, and a lens. The method includes a step of displaying an image for focus adjustment of a user's eye; a step of detecting a spot diameter of first light reflected by the user's eye; a step of moving the lens and detecting a spot diameter of second light reflected by the user's eye; a step of determining whether the spot diameter of the second light is smaller than the spot diameter of the first light; a step of further moving the lens and detecting a spot diameter of the third light reflected by the user's eye in the case where the spot diameter of the second light is smaller than the spot diameter of the first light; a step of determining whether the spot diameter of the third light is smaller than the spot diameter of the second light; and a step of moving the lens to a position at which the spot diameter of the first light has been detected, in the case where the spot diameter of the second light is larger than the spot diameter of the first light.
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公开(公告)号：US12106823B2
公开(公告)日：2024-10-01
申请号：US17914845
申请日：2021-04-06
IPC分类号： G11C7/16 , G11C11/40 , G11C27/02 , H01L29/786 , G11C11/54
CPC分类号： G11C7/16 , G11C11/40 , G11C27/02 , H01L29/786 , G11C11/54
摘要： A semiconductor device capable of holding analog data is provided. Two holding circuits, two bootstrap circuits, and one source follower circuit are formed with use of four transistors and two capacitors. A memory node is provided in each of the two holding circuits; a data potential is written to one of the memory nodes and a reference potential is written to the other of the memory nodes. At the time of data reading, the potential of the one memory node is increased in one of the bootstrap circuits, and the potential of the other memory node is increased in the other of the bootstrap circuits. A potential difference between the two memory nodes is output by the source follower circuit. With use of the source follower circuit, the output impedance can be reduced.
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公开(公告)号：US12041366B2
公开(公告)日：2024-07-16
申请号：US17911193
申请日：2021-03-15
IPC分类号： H04N25/78 , H04N25/705 , H04N25/77
CPC分类号： H04N25/705 , H04N25/77 , H04N25/78
摘要： An imaging device having a function of processing an image is provided. The imaging device has an additional function such as image processing, can hold analog data obtained by an image capturing operation in a pixel, and can extract data obtained by multiplying the analog data by a predetermined weight coefficient. Difference data between adjacent light-receiving devices can be obtained in a pixel, and data on luminance gradient can be obtained. When the data is taken in a neural network or the like, inference of distance data or the like can be performed. Since enormous volume of image data in the state of analog data can be held in pixels, processing can be performed efficiently.
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公开(公告)号：US11689850B2
公开(公告)日：2023-06-27
申请号：US17282106
申请日：2019-10-02
发明人： Takeya Hirose , Takayuki Ikeda
CPC分类号： H04R3/005 , H04R1/406 , H04R2201/401
摘要： Provided is a semiconductor device that does not require an A/D converter circuit and is capable of performing sound source separation without converting an analog signal. The semiconductor device includes a plurality of microphones, a plurality of delay circuits, and a signal processing circuit. The plurality of microphones are electrically connected to the respective delay circuits, and output signals of the plurality of delay circuits are input to the signal processing circuit. The delay circuit includes a plurality of signal retention circuits capable of retaining an analog potential, and has functions of retaining an electric signal output from the microphone as a discrete analog signal in the signal retention circuits and outputting the signal at a time different from the time when the microphone outputs the signal. The signal processing circuit has a function of adding the output signals of the plurality of delay circuits.
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