DETECTION DEVICE
A detection device includes a substrate, a photodiode provided on the substrate, a lens provided so as to overlap the photodiode, a light-blocking layer that is provided between the photodiode and the lens, and is provided with an opening in a region overlapping the photodiode, and a light-transmitting resin layer and a buffer layer that are stacked between the light-blocking layer and the lens. The lens is provided in direct contact with a top of the buffer layer.
1 . A detection device comprising:
a substrate;
a photodiode provided on the substrate;
a lens provided so as to overlap the photodiode;
a light-blocking layer that is provided between the photodiode and the lens, and is provided with an opening in a region overlapping the photodiode; and
a light-transmitting resin layer and a buffer layer that are stacked between the light-blocking layer and the lens, wherein
the lens is provided in direct contact with a top of the buffer layer.
2 . The detection device according to claim 1 , wherein the buffer layer is formed of a resin material containing a material different from that of the light-transmitting resin layer.
3 . The detection device according to claim 1 , wherein the buffer layer is formed of a resin material containing a surfactant of the same family as a material used for the lens.
4 . The detection device according to claim 1 , wherein the buffer layer has a smaller thickness than that of the light-transmitting resin layer.
5 . The detection device according to claim 1 , comprising a barrier layer that is provided between the light-blocking layer and the light-transmitting resin layer and is formed of an acrylic resin.
6 . The detection device according to claim 5 , comprising a filter layer that is provided so as to cover the light-blocking layer and the opening and is configured to block light in a predetermined wavelength band, wherein
the barrier layer is provided so as to cover the filter layer, and
the light-transmitting resin layer is provided above the barrier layer.
7 . The detection device according to claim 1 , comprising an organic protective film covering the photodiode, wherein
the light-blocking layer comprises:
a first light-blocking layer that is provided above the organic protective film and is provided with a first opening in a region overlapping the photodiode; and
a second light-blocking layer that is provided between the first light-blocking layer and the lens and is provided with a second opening in a region overlapping the photodiode and the first opening, and
the light-transmitting resin layer comprises:
a first light-transmitting resin layer provided between the first light-blocking layer and the second light-blocking layer; and
a second light-transmitting resin layer provided between the second light-blocking layer and the buffer layer.
8 . The detection device according to claim 1 , comprising a plurality of the lenses, wherein
the lenses are provided in a region overlapping the one photodiode.