Image sensor, working method thereof and display device

Abstract

The invention provides an image senor, a working method thereof and a display device for solving the problem that the storage cost of the existing image sensor in the follow-up data processing is higher. The image sensor comprises a pixel array and a reading unit, wherein the pixel array is used for carrying out light sensation on an image and converting an optical signal of the image to an electrical signal, and the number of row pixel units in the pixel array is smaller than the number of column pixel units; and the reading unit is used for gating the pixel units of the pixel array and reading image information of the selected row pixel units by taking row as unit. Compared with the image sensor in the prior art, the data size of each row in the output image information of the image sensor according to the invention for the pixel array with a certain resolution is comparatively small, thereby greatly reducing the requirements of storage capacity of a buffer unit in the follow-up data processing and reducing the manufacturing and processing cost by using the buffer unit with the smaller capacity.

Description

technical field [0001] The invention relates to the technical field of image sensing, in particular to an image sensor, a working method thereof, and a display device. Background technique [0002] An image sensor is a semiconductor device that converts light signals into electrical signals. Image sensors are generally classified into two categories: Charge Coupled Devices (Charger Coupled Device, CCD) and Complementary Metal Oxide Semiconductor (CMOS) image sensors. CCD image sensor has the advantages of low read noise, large dynamic range, and high response sensitivity. However, CCD image sensor has high power consumption and complicated manufacturing process, making it difficult to realize single-chip integration with peripheral circuits. [0003] The CMOS image sensor uses the same CMOS technology as the signal processing circuit, and the CMOS image sensor and the signal processing circuit outside the sensor can be integrated on the same chip. Compared with CCD image s...

AI Technical Summary

Problems solved by technology

[0009] It can be seen that for the image sensor in the prior art, in order to perform various data processing on the image information output by its pixel array, it is necessary to integrate a sufficient capacity of storage space in the image sensor, which results in huge storage overhead

In particular, the line resolution of high-resolution image sensors is getting higher and higher, and the storage cost of image sensors has also increased sharply.

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