Title:
IMAGE SENSOR AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2024/009999
Kind Code:
A1
Abstract:
Provided is a technology that makes it possible to improve the detection accuracy of an image sensor with respect to infrared radiation. An image sensor 1A comprises: a substrate 2 on which a plurality of photodiodes are provided; a color filter 4 which includes a plurality of coloration layers and has a plurality of first through-holes; an infrared radiation blocking layer 6 which is provided on the color filter and has a plurality of second through-holes respectively communicating with the plurality of first through-holes; a plurality of infrared radiation transmissive layers 41 in each of which one of the plurality of first through-holes and the second through-hole communicating therewith are embedded; and a plurality of micro lenses 51. In the image sensor 1A, the side wall of each of the plurality of second through-holes is entirely in contact with the side surface of any of the plurality of infrared radiation transmissive layers 41. The upper surface of the infrared radiation blocking layer has a maximum height HCH at the position of the boundary thereof with the plurality of infrared radiation transmissive layers 41, and has a minimum height HCL at a position away from the boundary. The upper surface of each of the plurality of infrared radiation transmissive layers 41 has a maximum height HPH that is greater than the minimum height HCL and is greater than or equal to the maximum height HCH.
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Inventors:
SAKAGAWA MAKOTO (JP)
Application Number:
PCT/JP2023/024771
Publication Date:
January 11, 2024
Filing Date:
July 04, 2023
Export Citation:
Assignee:
TOPPAN HOLDINGS INC (JP)
International Classes:
H01L27/146; G02B3/00; G02B5/20; G02B5/22; H04N25/11
Foreign References:
| JP2022038288A | 2022-03-10 | |||
| JP2016075886A | 2016-05-12 | |||
| US20150381907A1 | 2015-12-31 |
Attorney, Agent or Firm:
SUZUYE & SUZUYE (JP)
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