CONDUCTIVE OPTICAL ELEMENT, TOUCH PANEL, AND LIQUID CRYSTAL DISPLAY APPARATUS
In one example, a conductive optical element is capable of achieving a wide range of surface resistance, and capable of achieving an excellent transmission property. In one example, the conductive optical element includes a substrate having a surface, a number of structures arranged on the surface of the substrate at fine pitches equal to or smaller than a wavelength of a visible light, and a transparent conductive film formed on the structure. In one example, the transparent conductive film has a shape modeled on shapes of the structures. In one example, an aspect ratio of the structures is 0.2 or more and 1.28 or less, and a film thickness of the transparent conductive film is 9 nm or more and 50 nm or less.
1 - 11 . (canceled)
12 . A conductive optical element having an antireflection function, comprising:
a substrate having a surface;
a number of structures arranged on the surface of the substrate at fine pitches equal to or smaller than a wavelength of a visible light; and
a transparent conductive film formed on the structure, wherein:
(a) the transparent conductive film has a shape modeled on shapes of the structures;
(b) an aspect ratio of the structures is 0.2 or more and 1.28 or less; and
(c) a film thickness of the transparent conductive film is 9 nm or more and 50 nm or less.
13 . The conductive optical element of claim 12 , wherein a surface resistance of the transparent conductive film is 1000Ω/□ or more and 5000Ω/□ or less.
14 . The conductive optical element of claim 12 , wherein the transparent conductive film includes indium tin oxide or zinc oxide.
15 . The conductive optical element of claim 12 , wherein the transparent conductive film is a mixed state of amorphous and polycrystalline.
16 . The conductive optical element of claim 12 , wherein:
(a) a relation D 1 >D 3 >D 2 is satisfied where a film thickness at top portions of the structures is D 1 ;
(b) a film thickness at inclined surfaces of the structures is D 2 ;
(c) a film thickness between the structures is D 3 ; and
(d) the film thickness D 2 at the inclined surfaces of the structures is 9 nm or more and 30 nm or less.
17 . The conductive optical element of claim 16 , wherein:
(a) the film thickness D 1 of the transparent conductive film at the top portions of the structures is in a range of 25 nm or more and 50 nm or less;
(b) the film thickness D 2 of the transparent conductive film at the inclined surfaces of the structures is in a range of 9 nm or more and 30 nm or less; and
(c) the film thickness D 3 of the transparent conductive film between the structures is in a range of 9 nm or more and 50 nm or less.
18 . The conductive optical element of claim 11 , which includes a conductive film formed on the structures, the conductive film including a metal-series material having a high conductivity, the conductive film having a shape modeled on the shapes of the structures.
19 . The conductive optical element of claim 18 , wherein the metal includes at least one kind selected from a group consisting of Ag, Pt, Al, Au, and Cu.
20 . The conductive optical element of claim 12 , wherein:
(a) the structures are arranged so as to form a plurality of rows of tracks on the surface of the substrate, and form a hexagonal-lattice pattern, a quasi-hexagonal-lattice pattern, a rectangular-lattice pattern, or a quasi-rectangular-lattice pattern; and
(b) the structure has an elliptic-cone or elliptic-truncated-cone shape having a long-axis direction in an extending direction of the tracks.
21 . A conductive optical element comprising:
a substrate having a surface; and
a transparent conductive layer formed on the surface of the substrate, wherein:
(a) the transparent conductive layer has a surface on which a number of structures are formed at fine pitches equal to or smaller than a wavelength of a visible light; and
(b) the structure has a transparent conductivity.
22 . The conductive optical element of claim 21 , wherein the transparent conductive layer and the structures include at least one kind of material selected from a group consisting of conductive polymer, silver-series filler, carbon nanotube, and indium tin oxide powder.