Color filter arrays and image sensors using the same

A color filter array, image sensing device technology, applied in the direction of filters, radiation control devices, optics, etc., can solve the problems of shading, dispersive images, etc., and achieve the effect of avoiding the well-known dispersion phenomenon

Active Publication Date: 2009-01-28
VISERA TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In view of this, the object of the present invention is to provide a color filter array and an image sensing device for its application, so as to solve the above-mentioned "dispersion" phenomenon and known problems such as image shading

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  • Color filter arrays and image sensors using the same
  • Color filter arrays and image sensors using the same
  • Color filter arrays and image sensors using the same

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Embodiment Construction

[0072] Figure 5 and Figure 6 is a schematic diagram showing an image sensing device 100 according to an embodiment of the present invention, wherein Figure 5depicts the top view of the pixel group, while Figure 6 depicted as Figure 5 Cross-sectional views of the pixel cross-sections at the first row D, the fourth / fifth row E, and the eighth row F in the pixel group in .

[0073] Such as Figure 5 and Figure 6 As shown, the image sensing device 100 includes a plurality of pixels 30 each having a photodiode / photoelectric conversion element 35 formed in a surface layer of a semiconductor substrate 38 such as a silicon substrate. In addition, the image sensing device 100 also includes a light-shielding layer 32 , which has a light-shielding region to shield a part of the pixel 30 without shielding the photodiode / photoelectric conversion element 35 . An opening 33 is formed in the light-shielding layer 32 so that the light 500 can pass through and enter the photodiode / p...

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Abstract

The present invention relates to a color filter arrays and image sensors using same. The color filter array includes a two-dimensional array including a plurality of first color filters, a plurality of second color filters, and a plurality of third color filters, wherein the first, second and third color filters are periodically arranged, and at least the first, second and third color filters formed in a first region of the two-dimensional array and the first, second and third color filters formed in a second region of the two-dimensional array are symmetrically mirrored. The embodiment of the invention provides an image sensing apparatus applying the color filter array. The invention can obtain symmetrical image with uniform color coherence and symmetrical characteristic, so that public known color dispersion phenomenon can be reduced or avoided and images with better white balance can be obtained.

Description

technical field [0001] The present invention relates to image sensors, and more particularly to a color filter array for improving the color symmetry of the image sensors. Background technique [0002] Image sensing devices are one of the essential building blocks in many optoelectronic devices such as digital cameras, mobile phones, and toys today. The known image sensing devices include a charge coupled device (CCD) image sensing device and a complementary metal oxide semiconductor (CMOS) image sensing device. [0003] The image sensing device usually includes a plurality of pixel cells in a planar array, wherein each pixel cell includes a photogate, a photoconductor, or a doped region for accumulating photoelectric charges. photodiode. [0004] Periodic patterns composed of dyes of different colors are superimposed on the planar arrayed pixel cells. The above periodic pattern is known as a color filter array. A plurality of microlenses are stacked on the color filter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146G02B5/23
CPCH01L27/14627H01L27/14621G02B5/20
Inventor 彭进宝刘宇杰
Owner VISERA TECH CO LTD
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