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Imaging Device And Imaging System

An imaging device and pixel technology, which is applied in semiconductor devices, electric solid state devices, TV system components, etc., can solve the problems of color information loss, difficulty in realization, and color can no longer be reproduced.

Inactive Publication Date: 2016-03-16
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That's because, if the signals of pixels of different colors are mixed, the information of the color is lost and the color can no longer be reproduced
Therefore, it is difficult to realize such a pixel configuration capable of charge addition between pixels of the same color while basic characteristics of pixels such as sensitivity and saturation signal charge are maintained.

Method used

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  • Imaging Device And Imaging System
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  • Imaging Device And Imaging System

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] will refer to Figure 1 to Figure 4 An imaging device according to a first embodiment of the present invention is described.

[0025] figure 1 , image 3 with Figure 4 is a plan view showing the configuration of the imaging device according to the present embodiment. Figure 2A , Figure 2B with Figure 2C is a circuit diagram showing the configuration of the imaging device according to the present embodiment.

[0026] The imaging device 100 according to the present embodiment operates as figure 1 The imaging area shown has multiple pixel regions R 1 to R 5 , G 1 to G 12 , B 1 to B 4 and O 1 to O 4 . This multiple pixel area R 1 to R 5 , G 1 to G 12 , B 1 to B 4 and O 1 to O 4 Arranged in a matrix comprising a plurality of rows and a plurality of columns. Each row spans each of the multiple columns. Each column spans each of the multiple rows.

[0027] Multiple pixel area R 1 to R 5 , G 1 to G 12 , B 1 to B 4 and O 1 to O 4 A pixel are...

no. 2 example

[0068] will refer to Figure 5 with Image 6 An imaging device according to a second embodiment of the present invention is described. The same reference numerals are given as in Figure 1 to Figure 4 Constituent elements are similar to those in the imaging device according to the first embodiment shown in , and the description will be omitted or simplified.

[0069] Figure 5 is a plan view showing the configuration of the imaging device according to the present embodiment. Image 6 is a schematic cross-sectional view showing the configuration of the imaging device according to the present embodiment.

[0070] In the first embodiment, the fact that light detection is not performed in principle in the signal readout pixels is described, but the sensitivity can be improved by also using the signal readout pixels for light detection.

[0071] That is, in the imaging device 100 according to the present embodiment, in addition to the signal accumulation pixels, the signal rea...

no. 3 example

[0087] will refer to Figure 7 An imaging device according to a third embodiment of the present invention is described. The same reference numerals are given as in Figure 1 to Figure 6 Constituent elements are similar to those in the imaging devices according to the first and second embodiments shown in , and the description will be omitted or simplified.

[0088] Figure 7 is a schematic cross-sectional view showing the configuration of the imaging device according to the present embodiment. Figure 7 is along Figure 5 A cross-sectional view of line A-A' in.

[0089] as in Figure 7 As shown in , the imaging device according to this embodiment has an R signal readout pixel (pixel area O 3 ) in the photodetection region of the photodiode, together with the second conductivity type impurity diffusion layer 54, two first conductivity type impurity diffusion layers 56 constituting a separate photodiode. In addition, a readout circuit (not shown) for reading out signal ch...

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PUM

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Abstract

The invention discloses an imaging device and an imaging system. The imaging device includes pixel regions including first pixel regions arranged at every other pixel in each row so that the first pixel regions alternate with each other in adjacent rows and configured to convert light in first color into first signal charge and accumulate it, second pixel regions arranged in square lattice form and at positions different from the first pixel regions and configured to convert light in color different from the first color into second signal charge and accumulate it, and third pixel regions arranged in square lattice form and at positions different from the first and second pixel regions and having reading-out circuit unit configured to add the signal charges accumulated in at least two first or second pixel regions adjacent to the third pixel region corresponding to a same color and to output signal based on amount of the added signal charges.

Description

technical field [0001] The present invention relates to an imaging device and an imaging system, and in particular to an imaging device outputting a pixel signal amplified by a MOS transistor in a pixel and an imaging system using the imaging device. Background technique [0002] In a solid-state imaging device, when pixel signals are to be read out from an imaging area where a large number of pixels are arranged, a method of reading out by adding pixel signals from a plurality of pixels and compressing resolution information of an image is known. [0003] A CCD, which is a kind of solid-state imaging device, sequentially transfers signal charge of each pixel and outputs it. When signals of a plurality of pixels are to be added, the output is basically added charges (hereinafter, this readout method will be referred to as "charge addition"). On the other hand, a CMOS sensor, another solid-state imaging device, converts signal charge of each pixel into a voltage and amplifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/374H04N23/12H04N25/46
CPCH01L27/14603H01L27/14621H01L27/14636H01L27/14641H01L27/14605H01L27/14645H01L27/14627
Inventor 篠原真人
Owner CANON KK