Solid-state imaging device and imaging apparatus having pixels portions over a substrate

1. A solid-state imaging device, comprising:

a substrate; and

a plurality of pixel portions arranged over the substrate,

wherein:

each of the pixel portions includes a photoelectric conversion portion provided over the substrate and a color filter provided over the photoelectric conversion portion;

the solid-state imaging device includes partitions for preventing light that is incident on the color filter of each pixel portion from entering adjacent pixel portions;

the partitions are provided between the color filters of the adjoining pixel portions so as to cover side surfaces of the color filters;

each of the photoelectric conversion portions includes a lower electrode provided over the substrate, an upper electrode provided over the lower electrode, and a photoelectric conversion layer provided between the lower electrode and the upper electrode;

each of the pixel portions further includes a protective layer provided between the color filter and the upper electrode, for protecting the photoelectric conversion portion; and

the protective layer has a thickness of greater than 0 μm and smaller than or equal to 1.0 μm; and

wherein a width of each of the partitions in a direction that is parallel with surfaces of the color filters is in a range of from 0.05 μm to 0.2 times a size of each of the pixel portions; and

a sum of a thickness of the color filters and the thickness of the protective layer is greater than 0.2 μm and smaller than or equal to 1.4 μm.

2. The solid-state imaging device according to claim 1 , wherein the partitions are made from a light absorbing or reflecting material or are air layers that reflect light totally.

3. The solid-state imaging device according to claim 1 , wherein the lower electrode is deviated outward more from the color filter of the same pixel portion as the position of the lower electrode goes away from a center of the solid-state imaging device.

4. The solid-state imaging device according to claim 3 , wherein the lower electrode is deviated outward so that a light ray that originates from a center of an exit pupil of an imaging lens of an imaging apparatus incorporating the solid-state imaging device and passes through a center of the color filter of the pixel portion reaches a center of a portion of the photoelectric conversion layer that is sandwiched between the lower electrode and the upper electrode of the same pixel portion.

5. The solid-state imaging device according to claim 4 , wherein a deviation of a center of the lower electrode from a center of the color filter of the same pixel portion is longer than or equal to 0.303T/L times a distance between an intersection of the light ray and a top surface of the solid-state imaging device and an optical axis of the imaging lens and shorter than or equal to 0.909T/L times the distance between the intersection of the light ray and the surface of the solid-state imaging device and the optical axis of the imaging lens, where L is a distance between the exit pupil of the imaging lens and the top surface of the solid-state imaging device and T is a distance between the center of the color filter and a center plane of the photoelectric conversion layer.

6. The solid-state imaging device according to claim 1 , wherein:

the photoelectric conversion layer is made from a photoelectric conversion material that absorbs visible light and generates signal charges corresponding to an amount of the absorbed light; and

the color filters of the pixel portions include three or more kinds of color filters that transmit light components in different wavelength ranges.

7. The solid-state imaging device according to claim 1 , wherein the photoelectric conversion layer is made from an organic or inorganic photoelectric conversion material.

8. The solid-state imaging device according to claim 1 , wherein each of the pixel portions further comprises a microlens provided over the color filter, for focusing light in the photoelectric conversion portion.

9. An imaging apparatus comprising the solid-state imaging device according to claim 1 .