Image sensor, pixel unit with binning and splitting modes
An image sensor and pixel unit technology, which is applied in the field of image sensors, can solve the problems of reducing the imaging resolution of image sensors, achieve high dark light expressiveness, and avoid contradictions
Active Publication Date: 2018-01-26
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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Problems solved by technology
However, in order to reduce the size of the image sensor, it is necessary to adopt the smallest possible pixel unit
Therefore, there is a conflict between sensitivity and relatively dynamic range, image sensor pixel size
[0008] (2) Whether it is CIS or CCD, Moiré fringes will appear, and there is a contradiction between Moiré fringes and resolution
However, the existence of the low-pass filter reduces the resolution of the image sensor imaging
Therefore, there is often a conflict between resolution and moiré
Method used
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[0027] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples, so that the realization process of how to use technical means to solve technical problems and achieve technical effects in the present invention can be fully understood and implemented accordingly.
[0028] In the following embodiments of the present invention, each pixel unit includes several sub-pixel groups arranged irregularly, and each sub-pixel group includes several sub-pixels; a switch control circuit is provided for each sub-pixel group. In different working states of the switch control circuit, according to the lighting conditions, the sub-pixels in each sub-pixel group are serially turned on, so that the image sensor is in a split working mode, and the output signals of the photosensitive units in each sub-pixel are sequentially output; or each sub-pixel is turned on in parallel. The sub-pixels in the pixel group make the image sensor wo...
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The invention discloses an image sensor and a pixel unit with combining and splitting modes, belonging to the field of image sensors. The image sensor includes: several pixel units with merging and splitting modes and a switch control circuit; wherein, each pixel unit includes several sub-pixel groups arranged irregularly, and each sub-pixel group includes several sub-pixels; A switch control circuit, which is used to serially turn on the subpixels in each subpixel group according to the lighting conditions, so that the image sensor is in a split working mode, and sequentially output the output signals of the photosensitive units in each subpixel; or turn on each subpixel in parallel sub-pixels in the group, so that the image sensor is in a combined working mode, and at the same time outputs the output signal of the photosensitive unit in each sub-pixel. The present invention avoids the conflict between resolution and moiré fringe elimination.
Description
technical field [0001] The invention belongs to the field of image sensors, and in particular relates to an image sensor and a pixel unit with combining and splitting modes. Background technique [0002] The image sensor is an important part of the camera. Traditional cameras use different image sensors than modern digital cameras. The image sensor used in traditional cameras is realized by film, while the image sensor used in modern digital cameras is realized by CMOS image sensor (CMOS IMAGE SENSOR, hereinafter referred to as CIS) or charge-coupled device (Charge-coupled Device, hereinafter referred to as CCD). . [0003] For traditional cameras, film can be divided into black and white film and color film. However, no matter which type of film, it generally includes two basic components: a single-layer or multi-layer photosensitive emulsion layer, and a photosensitive emulsion layer support, that is, the film base. Photosensitive emulsion layers are made from emulsion...
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IPC IPC(8): H04N9/04H04N5/341H04N5/3745
Inventor 李琛陈嘉胤
Owner SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT