Solid image capturing device including CMOS image sensor

Abstract

The present invention provides a solid camera shooting device containing CMOS type image sensor. In a pixel part, setting units in line and row on a semiconductor substrate to store signal charges obtained by implementing photoelectricity transformation to light incident to a photoelectricity transforming component, and to output voltage corresponding to the stored signal charge. Setting color filters of W, R, G, B separately on the units, and transforming analog signals exported from the Wpixel, R pixel, G pixel as well as B pixel to digital signals by an analog / digital transformation circuit, and outputting W, R, G, B signals separately, as well as controlling saturated signal quantity of the W signal by a saturated signal quantity control circuit, moreover, outputting the R, G, B signals corrected by a signal generating circuit (32) using the W signal exported from the AD transfromation circuit and the R, G, B signals.

Description

[0001] (Cross-reference to related application) [0002] This application is based on and claims priority from prior Japanese Patent Application No. 2007-000718 filed on January 5, 2007, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a solid-state imaging device, and relates to a CMOS image sensor used in, for example, a mobile phone with an image sensor, a digital camera, a video camera, and the like. Background technique [0004] For color filters used in image sensors, various arrangements from complementary color filters to primary color Bayer arrangements have been proposed together with signal processing methods thereof. In image sensors, the miniaturization of pixels has progressed in recent years, and the 2μm generation has been put into practical use, and development of 1.75μm pixels or 1.4μm pixels is also underway. In fine pixels of 2 μm or less, since the amount of incident light is gr...

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Problems solved by technology

[0005] However, since the W pixel is highly sensitive, there is a problem in that the W signal obtained from the W pixel is immediately saturated, or there is a problem in color reproducibility because the Y signal (brightness signal) = W signal

However, if the original Y signal is not generated according to the ratio of Y=0.59G+0.3R+0.11B, the color reproducibility of the RGB signal generated from the YUV signal will deteriorate

Furthermore, in the above-mentioned patent documents, effective signal processing using W pixels is not performed.

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