Solid-state imaging element and imaging device

    公开(公告)号:US12133008B2

    公开(公告)日:2024-10-29

    申请号:US17798460

    申请日:2021-01-26

    Inventor: Satoshi Azuhata

    CPC classification number: H04N25/75 H04N25/768 H04N25/772 H04N25/778 H04N25/79

    Abstract: To improve a frame rate in a solid-state imaging element that compares a reference signal and a pixel signal.
    The solid-state imaging element includes a differential amplifier circuit, a transfer transistor, and a source follower circuit. The differential amplifier circuit amplifies a difference between the potentials of a pair of input nodes and outputs the difference from an output node. The transfer transistor transfers charge from a photoelectric conversion element to a floating diffusion layer. The auto-zero transistor short-circuits the floating diffusion layer and the output node in a predetermined period. The source follower circuit supplies a potential to one of the pair of input nodes according to a potential of the floating diffusion layer.

    SOLID-STATE IMAGING ELEMENT
    3.
    发明公开

    公开(公告)号:US20240340551A1

    公开(公告)日:2024-10-10

    申请号:US18746479

    申请日:2024-06-18

    CPC classification number: H04N25/77 H04N25/616 H04N25/65 H04N25/78 H04N25/79

    Abstract: Solid-state imaging elements are disclosed. In one example, an upstream circuit sequentially generates a predetermined reset level and a signal level corresponding to an exposure amount, and causes first and second capacitive elements to hold the reset level and the signal level. A selection circuit sequentially connects one of the capacitive elements to a predetermined downstream node, disconnects both capacitive elements from the downstream node, and connects the other capacitive element to the downstream node. A downstream reset transistor initializes a level of the downstream node when both capacitive elements are disconnected from the downstream node. A downstream circuit sequentially reads the reset level and the signal level from the first and second capacitive elements via the downstream node and outputs the reset level and the signal level.

    IMAGE SENSOR AND OPERATING METHOD OF IMAGE SENSOR

    公开(公告)号:US20240305899A1

    公开(公告)日:2024-09-12

    申请号:US18456017

    申请日:2023-08-25

    CPC classification number: H04N23/80 H04N23/667 H04N25/79

    Abstract: An image sensor includes a pixel array including pixels, an image data generation circuit configured to generate first image data based on signals of the pixels and output the first image data, and an image data translation circuit configured to generate second image data based on translating the first image data and outputting the second image data to an external host device. The image data generation circuit has a vertical blank interval and a frame interval alternately, is configured to not output the first image data during the vertical blank interval, and is configured to output one frame of the first image data during the frame interval. The image data translation circuit is configured to perform a preparation operation to translate a frame of the first image data into a frame of the second image data in a next frame interval, during the vertical blank interval.

    IMAGING DEVICE AND CAMERA SYSTEM
    6.
    发明公开

    公开(公告)号:US20240305895A1

    公开(公告)日:2024-09-12

    申请号:US18664980

    申请日:2024-05-15

    CPC classification number: H04N23/73 H04N25/10 H04N25/532 H04N25/79

    Abstract: An imaging device includes a first pixel and a second pixel. The first pixel includes a first photoelectric converter that generates first signal charge by photoelectric conversion and that has sensitivity to a first wavelength range that is invisible and a first signal detection circuit connected to the first photoelectric converter. The second pixel includes a second photoelectric converter that generates second signal charge by photoelectric conversion and that has sensitivity to a second wavelength range and a second signal detection circuit connected to the second photoelectric converter. An exposure period of the second photoelectric converter does not overlap a light-emitting period of light based on lighting, the light being incident on the first photoelectric converter and having a luminescence peak in the first wavelength range. A readout period during which the second signal detection circuit reads out the second signal charge does not overlap the light-emitting period.

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