Title:
IMAGE SENSOR AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2016/190246
Kind Code:
A1
Abstract:
The present invention obtains a smooth microlens surface and maintains the spacing between adjacent microlenses, and improves the light collection efficiency of the microlenses. An image sensor in which a color separation filter and microlenses are layered, in the stated order, on a photoelectric conversion element formed on a semiconductor substrate. The microlenses have a two-layer structure comprising, along the layering direction, a microlens lower layer on the color separation filter side and a microlens upper layer formed on the microlens lower layer. The microlens lower layer has a columnar or a frustum shape and the microlens upper layer has a hemispherical shape. The microlens upper layer preferably has a refractive index equal to or higher than the refractive index of the microlens lower layer.
Inventors:
KUMAI KOICHI (JP)
AKENO YASUTAKE (JP)
AKENO YASUTAKE (JP)
Application Number:
PCT/JP2016/065036
Publication Date:
December 01, 2016
Filing Date:
May 20, 2016
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD (JP)
International Classes:
H01L27/14; G02B3/00; H04N5/369; H04N9/07
Foreign References:
| JP2006165162A | 2006-06-22 | |||
| JPH08288482A | 1996-11-01 | |||
| JP2001085651A | 2001-03-30 | |||
| JP2009059959A | 2009-03-19 | |||
| JP2012099639A | 2012-05-24 |
Attorney, Agent or Firm:
HIROSE Hajime et al. (JP)
Hirose 1 (JP)
Hirose 1 (JP)
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