Image sensor and camera module

Abstract

The invention discloses an image sensor which comprises a pixel array, a signal processing module and a semiconductor substrate, wherein the pixel array receives incident light irradiation and converts an optical signal into an electric signal; the signal processing module is used for converting the converted electric signal into a digital signal; the pixel array and the signal processing module are arranged on the semiconductor substrate; the middle area of the semiconductor substrate is a plane and the edge area is a curved surface, so that the optical path difference of the incident light entering the edge area through a lens is equal to the optical path difference of the incident light entering the middle area; pixel points are distributed in both the middle area and the edge area of the semiconductor substrate. According to the image sensor provided by the invention, the four-angle analysis rate of the camera module is improved. The invention further discloses a camera module which has the beneficial effects.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to an image sensor and a camera module. Background technique [0002] The image sensing of the camera module in the prior art generally adopts a planar sensor. For a spherical lens, after imaging through the small hole of the spherical lens, the imaging surface of the axis shape will be curved, resulting in blurring of the four corners when the center is at the clearest point. , distortion etc. At present, mobile phone cameras are developing in the direction of large aperture and high pixel. The larger the aperture, the higher the pixel, and the more serious the curvature of the image plane. [0003] In the prior art, AA technology is used to solve the problem of blurred corners, but AA equipment is expensive, there are many fixtures, the cost of fixtures is high, and the bottom plate is opened a lot, which is labor-intensive and time-consuming, and cannot solve the distortion prob...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an image sensor, which has solved the problem of poor corner resolution of the plane sensor in the prior art; the present invention also provides a camera module, which has the above beneficial effects

Images