Image sensor with merged and split modes and pixel units

Abstract

The invention discloses an image sensor with merged and split modes and pixel units and belongs to the field of image sensors. The image sensor comprises a plurality of the pixel units with the merged and split modes and switch control circuits, wherein each pixel unit comprises a plurality of sub-pixel groups which are irregularly arranged, and each sub-pixel group comprises a plurality of sub-pixels; one switch control circuit is arranged for each sub-pixel group and is used for serially opening the sub-pixels of each sub-pixel group according to lighting conditions, so that the image sensor is in a split working mode and sequentially outputs output signals of light sensing units of all sub-pixels; or the sub-pixels of each sub-pixel group are opened parallel, so that the image sensor is in a merged working mode and simultaneously outputs the output signals of the light sensing units of all the sub-pixels. According to the image sensor and the pixel units, the contradiction to resolution during the elimination of Moire fringes is avoided.

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...

AI Technical Summary

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

Images