Semiconductor device, electronic device, and method for manufacturing semiconductor device
Provided are a semiconductor device capable of constituting a through electrode having a desired shape, an electronic device, and a method for manufacturing a semiconductor device. The semiconductor device includes a first substrate including silicon, a first film formed on at least some surfaces of a hole-shaped portion formed in the first substrate, and a photosensitive second film covering at least a part of a side surface of the hole-shaped portion with the first film interposed therebetween.
1 . A semiconductor device, comprising:
a first substrate that includes:
silicon;
a semiconductor substrate that includes a hole-shaped portion; and
a multilayer wiring layer connected to the semiconductor substrate, wherein
the hole-shaped portion is a through hole that penetrates the multilayer wiring layer from a surface of the semiconductor substrate, and
the multilayer wiring layer includes a logic circuit;
a first film on at least one surface of the hole-shaped portion;
a photosensitive second film that covers at least a part of a side surface of the hole-shaped portion, wherein
the at least one surface of the hole-shaped portion includes the side surface of the hole-shaped portion, and
the first film is between the side surface of the hole-shaped portion and the photosensitive second film; and
a second substrate includes a pixel region, wherein
the pixel region includes pixel units, and
the second substrate is different from the first substrate.
2 . The semiconductor device according to claim 1 , wherein the first film absorbs light having a wavelength sensitive to the photosensitive second film.
3 . The semiconductor device according to claim 2 , wherein the first film has a different thickness depending on a position where the first film is formed.
4 . The semiconductor device according to claim 3 , wherein the first film has different absorption characteristics or reflection characteristics of the light depending on the thickness.
5 . The semiconductor device according to claim 1 , wherein the first film has an adsorption force of one of specific value or more than the specific value with respect to the first substrate and the photosensitive second film.
6 . The semiconductor device according to claim 1 , wherein the first film is a substance that includes at least one of silicon nitride (SiN), silicon oxynitride (SiOxNy), or titanium nitride (TiN).
7 . The semiconductor device according to claim 1 , wherein the photosensitive second film is an insulating film.
8 . The semiconductor device according to claim 7 , wherein the photosensitive second film is a substance that includes at least one of polyimide, silicone, acryl, epoxy, or spin-on carbon (SOC).
9 . The semiconductor device according to claim 1 , further comprising:
a first connection conductor that covers the multilayer wiring layer;
an electrode on a side of the surface of the semiconductor substrate, wherein the electrode is electrically connected to an external substrate; and
a second connection conductor that connects the first connection conductor and the electrode.
10 . The semiconductor device according to claim 9 , wherein the first film is on at least a part of the surface of the semiconductor substrate, a side wall surface of the through hole, or a surface of the multilayer wiring layer on a side of the semiconductor substrate.
11 . The semiconductor device according to claim 9 , wherein the first film is formed only on a side wall surface of the through hole.
12 . The semiconductor device according to claim 9 , wherein the first film is formed only on a bottom portion of the through hole.
13 . The semiconductor device according to claim 9 , wherein the photosensitive second film is formed on a surface of the first substrate and a side wall surface of the through hole.
14 . The semiconductor device according to claim 1 , wherein the multilayer wiring layer further includes at least one of a memory circuit, a control circuit, or an interposer.
15 . The semiconductor device according to claim 14 , wherein
the pixel units are configured to:
execute photoelectric conversion; and
output a pixel signal based on the photoelectric conversion,
the pixel units are two-dimensionally arranged, and
the logic circuit is configured to process the pixel signal.