Thin-film transistor and thin-film diode having amorphous-oxide semiconductor layer
AssigneeCanon Kabushiki Kaisha
InventorTatsuya Iwasaki
Life of this patent
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Abstract
A thin-film transistor including a channel layer being formed of an oxide semiconductor transparent to visible light and having a refractive index of nx, a gate-insulating layer disposed on one face of the channel layer, and a transparent layer disposed on the other face of the channel layer and having a refractive index of nt, where there is a relationship of nx>nt. A thin-film transistor including a substrate having a refractive index of no, a transparent layer disposed on the substrate and having a refractive index of nt, and a channel layer disposed on the transparent layer and having a refractive index of nx, where there is a relationship of nx>nt>no.
Claims15
A thin-film transistor comprising:
- a channel layer being formed of an oxide semiconductor transparent to visible light, the channel layer having a refractive index of nx;
- a gate-insulating layer disposed on one face of the channel layer;
- and
- a transparent layer disposed on the other face of the channel layer and having a refractive index of nt,
- wherein there is a relationship of nx>nt.
A thin-film transistor comprising:
- a substrate having a refractive index of no;
- a channel layer disposed on the substrate, the channel layer being formed of an oxide semiconductor transparent to visible light, and the channel layer having a refractive index of nx;
- and
- a gate-insulating layer disposed on the channel layer and having a refractive index of ni,
- wherein the refractive index nx of the channel layer changes continuously or stepwise from no to ni in the film thickness direction.
A thin-film diode comprising:
- a substrate having a refractive index of no;
- a transparent layer disposed on the substrate and having a refractive index of nt;
- and
- an oxide semiconductor layer disposed on the transparent layer, the oxide semiconductor layer being transparent to visible light and having a refractive index of nx,
- wherein there is a relationship of nx>nt>no.
Dependencies are inferred from the claim text.