Ultra-high-definition CMOS image sensor pixel circuit of three-dimensional structure and method for controlling ultra-high-definition CMOS image sensor pixel circuit of three-dimensional structure
An image sensor and pixel circuit technology, applied in the field of image sensing, can solve the problems that the image signal transmission speed and analog-to-digital conversion speed cannot keep up with the image signal reading speed, and the signal noise is high, so as to increase the aperture ratio and improve the image quality , Improve the effect of analog-to-digital conversion speed
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[0058] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.
[0059] like figure 1 Shown is the pixel circuit diagram of the ultra-high-definition CMOS image sensor of the three-dimensional structure of the present invention.
[0060] exist figure 1 In, the pixel circuit consists of reset transistor RST, transfer transistor TX, bias transistor PC, switch transistor SWITCH 1 、SWITCH 2 (abbreviated SW), Floating Diffusion Amplifier FDA 1 、FDA 2 , the selection transistor SEL consists of 8 transistors in total. In addition, there are photodiodes PPD and two sampling capacitors C 1 、C 2 .
[0061] The photodiode PPD is directly connected to the transmission transistor TX, and the transmission...
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