Image sensor active pixel and image sensor with variable conversion gain
An image sensor and conversion gain technology, applied in the field of image sensors, can solve the problems of reducing the output image quality of the sensor, difficult to collect, etc., and achieve the effects of improving image quality, low photoelectric conversion gain, and high photoelectric conversion gain.
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[0024] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. In addition, well-known structures and operations are not shown or described in detail in order to clearly describe the various embodiments of the present invention.
[0025] The embodiment of the present invention introduces a special pixel structure to the floating active area to form a new 4T active pixel, figure 2 Shown is the circuit diagram of the active pixel structure, from figure 2 It can be seen from the figure that the 4T active pixel is basically the same as the current 4T active pixel. The gate terminal VB of the capa...
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