US 12,015,037 B2
Imaging device and method of manufacturing imaging device
Yusuke Moriya, Kumamoto (JP)
Assigned to Sony Semiconductor Solutions Corporation, Kanagawa (JP)
Appl. No. 17/044,994
Filed by SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
PCT Filed Jan. 17, 2019, PCT No. PCT/JP2019/001262
§ 371(c)(1), (2) Date Oct. 2, 2020,
PCT Pub. No. WO2019/198291, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. 2018-076027 (JP), filed on Apr. 11, 2018.
Prior Publication US 2021/0151484 A1, May 20, 2021
Int. Cl. H01L 27/146 (2006.01); G02B 5/20 (2006.01)
CPC H01L 27/14605 (2013.01) [G02B 5/208 (2013.01); H01L 27/14621 (2013.01); H01L 27/14627 (2013.01); H01L 27/14685 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An imaging device, comprising:
a photoelectric converter that performs photoelectric conversion depending on incident light;
an on-chip lens that collects the incident light into the photoelectric converter;
a color filter through which infrared light and visible light of a specified wavelength from among the collected incident light are transmitted;
an infrared-light attenuation filter that attenuates the infrared light from among the collected incident light and through which visible light from among the collected incident light is transmitted; and
a protective film that is arranged adjacent to the infrared-light attenuation filter and protects the infrared-light attenuation filter,
wherein the protective film is arranged adjacent to the color filter,
wherein the infrared-light attenuation filter attenuates the infrared light transmitted through the color filter, and
wherein the protective film has substantially a same refractive index as the color filter.
 
8. An imaging device, comprising:
a photoelectric converter that performs photoelectric conversion depending on incident light;
an on-chip lens that collects the incident light into the photoelectric converter;
a color filter through which infrared light and visible light of a specified wavelength from among the collected incident light are transmitted;
an infrared-light attenuation filter that attenuates the infrared light from among the collected incident light and through which visible light from among the collected incident light is transmitted; and
a protective film that is arranged adjacent to the infrared-light attenuation filter and protects the infrared-light attenuation filter, wherein the protective film is formed by stacking an organic material and an inorganic material.