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Color filter array and solid-state image pickup device

A color filter array, color filter technology, applied in the direction of electric solid devices, solid image signal generators, electrical components, etc., can solve the problems of reducing the sensitivity of visible light, signal gain, etc., and achieve the reduction of sensitivity and resolution. The effect of reduced, good resolution

Inactive Publication Date: 2006-08-30
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Since IR pixels have no sensitivity to visible light, there will be problems of reducing sensitivity to visible light and signal gain

Method used

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  • Color filter array and solid-state image pickup device
  • Color filter array and solid-state image pickup device
  • Color filter array and solid-state image pickup device

Examples

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Embodiment Construction

[0027] Hereinafter, an embodiment of the present invention (hereinafter referred to as an embodiment) will be described based on the drawings.

[0028] figure 1 It is a schematic plan view of the solid-state imaging element of this embodiment. This solid-state imaging element is equipped with the color filter array of the embodiment of the present invention. The solid-state imaging element 2 is a frame transfer type CCD image sensor, and includes an imaging unit 2i, a storage unit 2s, a horizontal transfer unit 2h, and an output unit 2d formed on a semiconductor substrate.

[0029] Each bit of the vertical shift register constituting the imaging unit 2i functions as each photosensitive pixel. Each photosensitive pixel is configured with a color filter, and the light component with sensitivity of the photosensitive pixel is determined according to the transmission characteristic of the color filter.

[0030] Being carried on figure 1 In the arrangement of the color filters of the ...

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Abstract

In a color filter array to be mounted on a solid-state image pickup device, in which filters that transmit infrared light are disposed, degradation in resolution or sensitivity is restrained. Part of red filters contained in color filter array in a pattern of Bayer array are replaced by IR filters that selectively transmit infrared light. The IR filters and the R filters are disposed in a checked pattern in the relevant color filter array. Thus, two G filters are disposed in each of pixel blocks having 2x2 pixels, and consequently degradation in resolution is restrained. The number of IR filters is one for two pixel blocks, and consequently degradation in sensitivity to visible light is restrained.

Description

Technical field [0001] The present invention relates to a color filter array used in a solid-state imaging element and a solid-state imaging element, and more particularly to an arrangement of photosensitive pixels for detecting infrared light. Background technique [0002] A solid-state imaging unit such as a CCD (Charge Coupled Device) image sensor mounted in a video camera or a digital camera has two-dimensionally arranged photosensitive pixels, and incident light is photoelectrically converted by the photosensitive pixels to generate electrical image signals. The photosensitive pixel includes a photodiode formed on a semiconductor substrate. Generally, the photodiode itself has a common spectral sensitivity characteristic in all photosensitive pixels. Therefore, in order to obtain a color image, a color filter array is arranged on the photosensitive pixels. The color filter array is composed of multiple color filters with different transmitted colors, that is, transmission wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20H04N5/335H04N23/12H04N101/00
CPCH01L27/14621H04N5/332H04N9/045H04N23/11H04N25/131H04N25/135G09B27/04
Inventor 松山久
Owner SANYO ELECTRIC CO LTD
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