Solid-state imaging device, its production method, camera with the solid-state imaging device, and light receiving chip
View Patent ↗Provided is a light-receiving chip whose transparent protection plate has an area equal to or smaller than an area of the light-receiving chip, and which does not require a base portion for mounting. Provision of the light-receiving chip contributes to reduction in size and weight of cameras. In addition, provision of a solid-state imaging apparatus having excellent productivity contributes to reduction in price of cameras. A solid-state imaging apparatus ( 10 ) having: a solid-state imaging device ( 11 ) (a light-receiving chip) provided with a plurality of light-receiving cells arranged either one dimensionally or two dimensionally on one main surface of a base substrate; and a transparent protection plate ( 12 ) provided to cover a light-receiving area ( 18 ) (the plurality of light-receiving cells), where an area of the transparent protection plate is equal to or smaller than an area of the light-receiving chip, and a space ( 20 ) is formed between the light-receiving cells and the transparent protection plate.
1. A solid-state imaging apparatus being one of pieces diced from an assembly, the solid-state imaging apparatus comprising:
a light-receiving chip having a plurality of light-receiving cells arranged either one dimensionally or two dimensionally on a main surface of a base substrate, the main surface being made up of a light-receiving area on which the light-receiving cells are arranged and a periphery area surrounding the light-receiving area;
a transparent protection plate, at least a part thereof that corresponds to the light-receiving area being transparent; and
a collective lens of the light-receiving cells, wherein
the transparent protection plate has a skirt portion at a periphery thereof,
the skirt portion is positioned on the periphery area of the main surface thereby forming a space between the light-receiving cells and the transparent protection plate,
the assembly is comprised of two layers, the two layers being a sheet of transparent protection plates and a semiconductor wafer of light-receiving chips that are attached to each other such that each transparent protection plate is combined with a corresponding light-receiving chip, and the diced pieces have such diced edges that result by cutting the two layers simultaneously,
the skirt portion is formed of a sealing material, and
the thickness of a space between the transparent protection plate and the light-receiving cells is greater than a height of the collective lens by 10μm-100μm.
2. The solid-state imaging apparatus of claim 1 , further comprising a through hole passing through the base substrate.
3. The solid-state imaging apparatus of claim 1 , further comprising a plurality of through holes passing through the base substrate.
4. The solid-state imaging apparatus of claim 2 , further comprising an electrode disposed on a back surface opposite to the main surface and connected to the through hole.
5. The solid-state imaging apparatus of claim 2 , wherein the through hole electrically connects an electrode disposed on the main surface and an electrode disposed on a back surface opposite to the main surface.
6. The solid-state imaging apparatus of claim 3 , wherein the plurality of through holes electrically connect electrode disposed on the main surface and electrodes disposed on a back surface opposite to the main surface, respectively.
7. The solid-state imaging apparatus of claim 6 , wherein the plurality of through holes are insulated from each other.
8. A solid-state imaging apparatus being one of pieces diced from an assembly, the solid-state imaging apparatus comprising:
a light-receiving chip having a plurality of light-receiving cells arranged either one dimensionally or two dimensionally on a main surface of a base substrate, the main surface being made up of a light-receiving area on which the light-receiving cells are arranged and a periphery area surrounding the light-receiving area;
a transparent protection plate, at least a part thereof that corresponds to the light-receiving area being transparent; and
a collective lens of the light-receiving cells, wherein
the transparent protection plate has a skirt portion at a periphery thereof,
the skirt portion is positioned on the periphery area of the main surface thereby forming a space between the light-receiving cells and the transparent protection plate,
the assembly is comprised of two layers, the two layers being a sheet of transparent protection plates and a semiconductor wafer of light-receiving chips that are attached to each other such that each transparent protection plate is combined with a corresponding light-receiving chip, and the diced pieces have such diced edges that result by cutting the two layers simultaneously,
the skirt portion is formed of a sealing material, and
a space between the transparent protection plate and the light-receiving cells is filled with a resin whose refractive index is smaller than that of the collective lens.
9. The solid-state imaging apparatus of claim 8 , further comprising a through hole passing through the base substrate.
10. The solid-state imaging apparatus of claim 8 , further comprising a plurality of through holes passing through the base substrate.
11. The solid-state imaging apparatus of claim 9 , further comprising an electrode disposed on a back surface opposite to the main surface and connected to the through hole.
12. The solid-state imaging apparatus of claim 9 , wherein the through hole electrically connects an electrode disposed on the main surface and an electrode disposed on a back surface opposite to the main surface.
13. The solid-state imaging apparatus of claim 10 , wherein the plurality of through holes electrically connect electrodes disposed on the main surface and electrodes disposed on a back surface opposite to the main surface, respectively.
14. The solid state imaging apparatus of claim 13 , wherein the plurality of through holes are insulated from each other.