Image sensing device including through vias electrically connecting imaging lens unit to image sensors
According to one embodiment, a solid-state image sensing device includes a semiconductor substrate on which a plurality of pixels are arranged, a transparent substrate including a first through via provided in an opening formed in advance to extend through, an adhesive including a second through via connected to the first through via and configured to bond the semiconductor substrate and the transparent substrate while exposing the pixels, and an imaging lens unit arranged on the transparent substrate.
1. A solid state image sensing device comprising:
a semiconductor substrate on which a plurality of pixels are arranged;
a transparent substrate including a first hole therein and including a first through via provided in the first hole;
an adhesive including a second hole therein, including a second through via provided in the second hole and connected to the first through via, and configured to bond the semiconductor substrate and the transparent substrate while exposing the pixels;
an imaging lens unit arranged on the transparent substrate;
a back redistribution layer arranged on a lower surface of the semiconductor substrate; and
a third through via electrically connected to the first through via, the second through via, and the back redistribution layer.
2. A solid-state image sensing device comprising:
a semiconductor substrate on which a plurality of pixels are arranged;
a transparent substrate including a first hole therein and including a first through via provided in the first hole;
an adhesive including a second hole therein, including a second through via provided in the second hole and connected to the first through via, and configured to bond the semiconductor substrate and the transparent substrate while exposing the pixels; and
an imaging lens unit arranged on the transparent substrate,
wherein the imaging lens unit has an auto focusing function of automatically focusing an image sensing target onto the pixels.
3. The device of claim 2 , wherein the imaging lens unit further includes:
a lens configured to focus the image sensing target onto the pixels;
an actuator configured to move the lens; and
a driver configured to control the actuator so as to control a focal length between the image sensing target and the lens.
4. The device of claim 3 , wherein the actuator includes one of a voice coil motor, a piezoelectric element, a shape memory alloy, a MEMS, and a liquid lens.
5. A solid state image sensing device comprising:
a semiconductor substrate on which a plurality of pixels are arranged;
a transparent substrate including a first hole therein and including a first through via provided in the first hole;
an adhesive including a second hole therein, including a second through via provided in the second hole and connected to the first through via, and configured to bond the semiconductor substrate and the transparent substrate while exposing the pixels;
an imaging lens unit arranged on the transparent substrate;
a back redistribution layer arranged on a lower surface of the semiconductor substrate; and
a third through via electrically connected to the first through via, the second through via, and the back redistribution layer,
wherein an interconnection layer to drive the pixels includes multilayered interconnections.
6. A solid-state image sensing device comprising:
a semiconductor substrate on which a plurality of pixels are arranged;
a transparent substrate including a first hole therein and including a first through via provided in the first hole;
an adhesive including a second hole therein, including a second through via provided in the second hole and connected to the first through via and configured to bond the semiconductor substrate and the transparent substrate while exposing the pixels;
an imaging lens unit arranged on the transparent substrate,
wherein an interconnection layer to drive the pixels includes multilayered interconnection, and
wherein the imaging lens unit has an auto focusing function of automatically focusing an image sensing target onto the pixels.
7. The device of claim 6 , wherein the imaging lens unit further includes:
a lens configured to focus the image sensing target onto the pixels;
an actuator configured to move the lens; and
a driver configured to control the actuator so as to control a focal length between the image sensing target and the lens.
8. The device of claim 7 , wherein the actuator includes one of a voice coil motor, a piezoelectric element, a shape memory alloy, a MEMS, and a liquid lens.