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Image sensor

A technology of image sensor and photosensitive layer, applied in the field of image sensor and color image sensor, can solve the problems of low illumination effect, high signal-to-noise ratio, high power consumption, etc., and achieve high-definition effect

Inactive Publication Date: 2017-01-04
浙江芯劢微电子股份有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CCD's unique technology has the advantages of good low-illumination effect, high signal-to-noise ratio, strong transparency, and good color reproduction ability. It is widely used in many high-end fields, but at the same time, it is restricted by its high cost and high power consumption its market development space

Method used

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Embodiment Construction

[0023] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but should not be construed as limiting the present application.

[0024] Such as figure 1 , figure 2 The image sensor, the structure is sequentially lens layer 3, color separation filter layer 5 and photosensitive layer 4, the color separation filter layer is the G mode color filter array (filter), wherein the G mode color filter array includes several A pixel structure unit 1 with the same size and shape; the lens layer includes several micro lenses, which are used to gather more incident light to the photosensitive area of ​​the pixel; the photosensitive layer is an electronic circuit matrix composed of X×Y pixels, which transmit the light through the The optical signal of the color filter layer is converted into an electrical signal for output.

[0025] Such as Figure 5 As shown, the G-mode color filter array used in the present invention includ...

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Abstract

An image sensor includes the following elements connected in sequence: a lens layer, a dichroic filter layer and a photosensitive layer. The dichroic filter layer is a G mode color filter array, wherein the G mode color filter array comprises a plurality of pixel structure units of the same size and the same shape. The lens layer comprises a plurality of micro lenses. The photosensitive layer is an electronic circuit matrix composed of X * Y pixels. In the pixel structure units, the pixels in the two mutually spaced rows and columns are all green, and the remaining pixels arranged at intervals in the same row or the same column are red or blue. The pixel structure units include 12 G filters, 2 R filters and 2 B filters, so that the proportion of G filters represents 3 / 4, and the ratio of R filters and B filters represents 1 / 4. The invention aims to increase the proportion of the green pixel points, so that the graphic image has higher definition, is more easily accepted by people's eyes, and improves the recognition degree of people's eyes and image degree. In addition, the sensor of the invention also plays a certain protective role to people's eyes.

Description

technical field [0001] The invention relates to an image sensor, specifically a color image sensor based on a G-mode filter array, and belongs to the field of imaging equipment. Background technique [0002] An image sensor is a device that converts an optical image into an electronic signal. Its basic working principle is to convert the optical image of the two-dimensional light intensity distribution formed by an external object on the imaging surface of the objective lens into a one-dimensional time-sequential electrical signal. The one-dimensional sequential electrical signal output by the image sensor is sent to the image display after subsequent amplification and synchronous control processing, and then the two-dimensional optical image can be restored and displayed. [0003] Image sensors are widely used in various consumer electronics products, such as digital cameras, mobile phones, and video surveillance systems. Mainstream image sensors are mainly divided into tw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146
CPCH01L27/14627H01L27/14607H01L27/14625
Inventor 王军陈阳陈咏黄兴婷
Owner 浙江芯劢微电子股份有限公司