Image sensor, camera assembly and mobile terminal

The invention discloses an image sensor, a camera assembly and a mobile terminal. The image sensor includes panchromatic pixels and color pixels. The color pixels have a narrower spectral response than the panchromatic pixels. The pixel area of the color pixels is larger than the pixel area of the panchromatic pixels. The doping concentration of the n-potential well layers of the panchromatic pixels is greater than that of the n-potential well layers of the color pixels, so that the panchromatic pixels have a full well capacity greater than that of the color pixels; and/or the depth of the n-potential well layers of the panchromatic pixels is greater than the depth of the n-potential well layers of the color pixels, so that the panchromatic pixels have a greater full well capacity than thecolor pixels. According to the image sensor, the camera assembly and the mobile terminal provided by the embodiment of the invention, the pixel area of the color pixels with relatively low sensitivity is increased and the full well capacity of the panchromatic pixels is increased, so that advanced overexposure of the panchromatic pixels is avoided, the utilization rate of the color pixels is increased, the overall sensitivity and the signal-to-noise ratio of the image sensor are improved, and a high-quality image can be obtained.