公开(公告)号：US20230261017A1

公开(公告)日：2023-08-17

申请号：US18014207

申请日：2021-07-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki INOUE ,  Seiichi YONEDA ,  Yusuke NEGORO ,  Takayuki IKEDA ,  Naoto KUSUMOTO ,  Kensuke YOSHIZUMI ,  Shunpei YAMAZAKI

IPC: H01L27/146

CPC classification number: H01L27/14623 ,  H01L27/14627 ,  H01L27/14621 ,  H01L27/14616 ,  H01L27/1461

Abstract: A highly functional imaging device is provided. A small imaging device is provided. An imaging device or the like capable of high-speed operation is provided. A highly reliable imaging device is provided. The imaging device includes a pixel array, and a light-blocking layer and a transparent conductive layer that are over the pixel array. The light-blocking layer includes a first region overlapping with a first pixel and a second region overlapping with a second pixel. The transparent conductive layer includes a region overlapping with the first region and a region overlapping with the second region. The transparent conductive layer has a light-transmitting property. The transparent conductive layer is electrically connected to the first region and the second region. First light enters the photoelectric conversion device included in the first pixel. Second light enters the photoelectric conversion device included in the second pixel. The imaging device has a function of sensing a focal point in image formation with use of a first electric signal generated by conversion of the first light and a second electric signal generated by conversion of the second light.

公开(公告)号：US20230207585A1

公开(公告)日：2023-06-29

申请号：US18117784

申请日：2023-03-06

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Seiichi YONEDA ,  Hidetomo KOBAYASHI KOBAYASHI ,  Takashi NAKAGAWA ,  Yusuke NEGORO ,  Shunpei YAMAZAKI

IPC: H01L27/146 ,  H04N25/75 ,  H04N25/79 ,  H04N25/531 ,  H04N25/771

CPC classification number: H01L27/14612 ,  H04N25/75 ,  H04N25/79 ,  H04N25/531 ,  H04N25/771

Abstract: An imaging device that can obtain imaging data corresponding to high-resolution images in a short period of time is provided. The imaging device includes a pixel including a photoelectric conversion element and n (n is an integer more than 2 inclusive) retention circuits. The photoelectric conversion element and the n retention circuits are stacked. One electrode of the photoelectric conversion element is electrically connected to the first to n-th retention circuits. The retention circuits include OS transistors with an extremely low off-state current feature, and can retain imaging data for a long time. In the first to n-th periods, the imaging device obtains the first to n-th imaging data and retains it in the first to n-th retention circuits. Then, the first to n-th imaging data retained in the first to n-th retention circuits are read out. The read imaging data is output outside the imaging data through AD conversion.

公开(公告)号：US20230054986A1

公开(公告)日：2023-02-23

申请号：US17904400

申请日：2021-02-22

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Seiichi YONEDA ,  Takayuki IKEDA ,  Hiroki INOUE ,  Yusuke NEGORO ,  Shunpei YAMAZAKI

IPC: H01L27/146

Abstract: An imaging device capable of image processing is provided. The imaging device has an image recognition function. In the imaging device, cells have a function of acquiring imaging data and a function of retaining weight data. Among the cells arranged in a matrix, some of the cells acquire imaging data and the rest of the cells retain weight data. Then, arithmetic operation is performed using the imaging data and the weight data. For example, all the imaging data can be subjected to arithmetic operation where products of the imaging data and the weight data are calculated and the sum of the calculated products is calculated. That is, product-sum operation can be performed. When an arithmetic operation result is captured by a neural network such as a convolutional neural network (CNN) or the like, the additional function can be used because image processing can be performed on the imaging data.

公开(公告)号：US20220359592A1

公开(公告)日：2022-11-10

申请号：US17633242

申请日：2020-08-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Seiichi YONEDA ,  Yusuke NEGORO ,  Takayuki IKEDA ,  Shunpei YAMAZAKI

IPC: H01L27/146

Abstract: An imaging device that has an image processing function and is capable of a high-speed operation is provided. The imaging device, which has an additional function such as image processing, can retain analog data obtained by an image capturing operation in a pixel and extract data obtained by multiplying the analog data by a predetermined weight coefficient. In the imaging device, some of potentials used for an arithmetic operation in pixels are generated by redistribution of charge with which wirings are charged. This enables an arithmetic operation to be performed at high speed with low power consumption, compared with the case where the potentials are supplied from another circuit to the pixels.

公开(公告)号：US20220264046A1

公开(公告)日：2022-08-18

申请号：US17628293

申请日：2020-07-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki INOUE ,  Seiichi YONEDA ,  Yusuke NEGORO ,  Takahiko ISHIZU ,  Hidetomo KOBAYASHI

IPC: H04N5/3745 ,  H04N5/351

Abstract: An imaging device having a motion detecting function and an image processing function is provided. The imaging device can detect a difference between a reference frame image and a comparative frame image, and can switch from a motion detecting mode to a normal image capturing mode when a significant difference is detected. A low-frame-rate operation in the motion detecting mode can reduce power consumption. Moreover, the imaging device has an image recognition function in combination with the motion detecting function, so that switching from the motion detecting mode to the normal image capturing mode can be performed when a particular image is recognized.

公开(公告)号：US20250088769A1

公开(公告)日：2025-03-13

申请号：US18910318

申请日：2024-10-09

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunsuke SATO ,  Seiichi YONEDA ,  Yusuke NEGORO ,  Takeya HIROSE ,  Shunpei YAMAZAKI

IPC: H04N25/77

Abstract: 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.

公开(公告)号：US20230144505A1

公开(公告)日：2023-05-11

申请号：US17795260

申请日：2021-02-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yusuke NEGORO ,  Seiichi YONEDA ,  Hiroki INOUE ,  Shunsuke SATO ,  Shunpei YAMAZAKI

IPC: H10K30/81 ,  H10K30/30

CPC classification number: H10K30/81 ,  H10K30/353 ,  H10K30/60

Abstract: A multifunctional imaging device is provided. The imaging device includes first to fourth light-receiving elements and first and second functional layers. The first to fourth light-receiving elements are photoelectric conversion elements having sensitivity to light of different wavelengths from each other. The first and second functional layers each include first and second transistors. The first functional layer and the fourth to first light-receiving elements are stacked in this order over the second functional layer. In each of the first to fourth light-receiving elements, a first conductive layer, a first buffer layer, a photoelectric conversion layer, a second buffer layer, and a second conductive layer are stacked in this order. The photoelectric conversion layer includes an organic compound, and the first buffer layer and the second buffer layer each include a metal or an organic compound. The first transistor is electrically connected to the first conductive layer of any of the first to fourth light-receiving elements. The second transistor is electrically connected to the first transistor.

公开(公告)号：US20220303494A1

公开(公告)日：2022-09-22

申请号：US17640134

申请日：2020-09-07

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yusuke NEGORO ,  Seiichi YONEDA

IPC: H04N7/01 ,  H01L27/146 ,  H01L27/30 ,  H04N5/232

Abstract: An imaging system that has an image processing function and is capable of generating an interpolation image is provided. The imaging system has an additional function such as image processing and can generate an interpolation image by using image data output from an imaging device. The imaging device can perform filter processing in parallel during a light exposure period, and thus can perform a large amount of arithmetic operation and generate a high-quality interpolation image. The number of arithmetic operations can be further increased particularly during image capturing in a dark place, which requires a long exposure time. Accordingly, the frame rate can be substantially increased, and high-quality moving image data can be generated.

公开(公告)号：US20220201234A1

公开(公告)日：2022-06-23

申请号：US17605817

申请日：2020-04-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Seiichi YONEDA ,  Yusuke NEGORO ,  Hidetomo KOBAYASHI

IPC: H04N5/3745 ,  H01L27/146 ,  H04N5/347 ,  H04N5/369

Abstract: An imaging device capable of executing image processing is provided. Analog data (image data) acquired through an imaging operation is retained in a pixel, and data obtained by multiplying the analog data by a given weight coefficient in the pixel can be extracted. The data is taken into a neural network or the like, whereby processing such as image recognition can be performed. Since an enormous amount of image data can be retained in pixels in an analog data state, processing can be performed efficiently.

公开(公告)号：US20210342423A1

公开(公告)日：2021-11-04

申请号：US17279637

申请日：2019-09-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Seiichi YONEDA ,  Yusuke NEGORO

IPC: G06F21/31 ,  G06K9/46 ,  G06K9/62 ,  G06F16/22

Abstract: A novel authentication system is provided. In addition, a method for recording an unlocking history is provided. The authentication system includes an arithmetic device and an input/output device. The arithmetic device supplies first control data and second control data, and is supplied with a sensor signal. The input/output device includes an electric lock and a reading portion, and the electric lock is unlocked on the basis of the second control data. The reading portion is supplied with the first control data, supplies the sensor signal, and includes a light-emitting element and a pixel array. The light-emitting element emits light including infrared rays, the pixel array includes pixels, the pixels each include an imaging circuit and a photoelectric conversion element, the imaging circuit is electrically connected to the photoelectric conversion element, the imaging circuit includes a transistor, and the transistor includes an oxide semiconductor film.