US 11,948,950 B2
Image acquisition device
Mickael Fourel, Champagnier (FR); and Laurent-Luc Chapelon, Domene (FR)
Assigned to STMicroelectronics (Crolles 2) SAS, Crolles (FR)
Filed by STMicroelectronics (Crolles 2) SAS, Crolles (FR)
Filed on Apr. 7, 2021, as Appl. No. 17/224,720.
Claims priority of application No. 2003759 (FR), filed on Apr. 15, 2020.
Prior Publication US 2021/0327936 A1, Oct. 21, 2021
Int. Cl. H01L 27/146 (2006.01); G02B 1/10 (2015.01); G02B 1/14 (2015.01); G02B 3/00 (2006.01)
CPC H01L 27/14621 (2013.01) [G02B 1/10 (2013.01); G02B 1/14 (2015.01); G02B 3/0012 (2013.01); H01L 27/14618 (2013.01); H01L 27/14627 (2013.01); H01L 27/14685 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An image acquisition device, comprising:
an array of visible light color filters;
an array of microlenses over the array of visible light color filters; and
at least one layer made from an inorganic dielectric material between the array of visible light color filters and the array of microlenses;
wherein the at least one layer made from the inorganic dielectric material is made of a material comprising a metal nitride.