US 12,266,669 B2
Image sensing device having lens with plurality of portions each corresponding to at least one of plurality of phase-difference detection pixels
Min Su Cho, Icheon-si (KR)
Assigned to SK HYNIX INC., Icheon-si (KR)
Filed by SK hynix Inc., Icheon-si (KR)
Filed on May 13, 2021, as Appl. No. 17/319,767.
Claims priority of application No. 10-2020-0127094 (KR), filed on Sep. 29, 2020.
Prior Publication US 2022/0102413 A1, Mar. 31, 2022
Int. Cl. H01L 27/146 (2006.01); H04N 25/11 (2023.01); H04N 25/704 (2023.01)
CPC H01L 27/14627 (2013.01) [H01L 27/14605 (2013.01); H01L 27/14621 (2013.01); H01L 27/14623 (2013.01); H04N 25/11 (2023.01); H04N 25/704 (2023.01)] 14 Claims
OG exemplary drawing
 
1. An image sensing device comprising:
a pixel array including a plurality of image detection pixels structured to convert light incident onto the image detection pixels into pixel signals representing an image of an object;
a plurality of phase-difference detection pixels in the pixel array structured to detect light from the object to generate a phase signal for measuring a distance between the image sensing device and the object; and
a first lens positioned to direct light to the plurality of phase-difference detection pixels, the first lens being shared by the plurality of phase-difference detection pixels and including a plurality of portions each corresponding to at least one of the plurality of phase-difference detection pixels,
wherein a center of the first lens is located over a center of the plurality of phase-difference detection pixels, and each of the plurality of portions of the first lens extends from the center of the first lens along a row or column direction between adjacent phase-difference detection pixels or along diagonal directions between the row and column directions,
wherein each of the plurality of phase-difference detection pixels are arranged in a (2×2) matrix and corresponds to at least a portion of the first lens,
wherein the row or column direction includes a first straight line passing through a center of the (2×2) matrix and overlapping with a bottom surface of the first lens, and the diagonal directions include a second straight line passing through the center of the (2×2) matrix and overlapping with the bottom surface of the first lens, and
wherein a length of the first straight line is longer than a length of the second straight line.