| CPC H01L 27/1463 (2013.01) [H01L 27/14605 (2013.01); H01L 27/14627 (2013.01)] | 13 Claims |
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1. An image sensor, comprising:
a pixel isolation structure disposed in pixel sensor array of a semiconductor substrate to define a first pixel region used to sense a first light, a second pixel region used to sense a second light, and a third pixel region used to sense a third light;
a first separation structure disposed in the first pixel region;
a second separation structure disposed in the second pixel region; and
a third separation structure disposed in the third pixel region;
wherein a wavelength of the second light is longer than a wavelength of the first light and is shorter than a wavelength of the third light,
wherein a shape of the first separation structure, a shape of the second separation structure, and a shape of the third separation structure are different from each other, and
wherein the pixel isolation structure comprises first protruding portions, which protrude toward a center of the third pixel region and face each other in a first direction perpendicular to a second direction.
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