Apparatus and method for manufacturing electro-optical devices
View Patent ↗The present invention provides an electro-optical device capable of achieving an increased light emission efficiency and an enhanced visibility. An organic electroluminescents (EL) display device has a plurality of material layers including a luminescent layer. In a plurality of material layers layered in the direction of light emission from the luminescent layer, first and second insulating interlayers are disposed between a substrate, which is positioned at the outermost surface, and the luminescent layer. The first and second insulating interlayers have a refractive index lower than that of the substrate. Accordingly, by forming predetermined materials having a low refractive index, the resulting low refractive index layers have a low dielectric constant, and consequently, the capacity between wires can be reduced.
1. An electro-optical device comprising:
a substrate;
a first electrode;
a second electrode opposite to the first electrode;
an electro-optical element disposed between the first electrode and the second electrode; and
a plurality of material layers including two low-refractive-index layers each of which includes a low-refractive index material having a refractive index lower than a refractive index of the substrate, the two low-refractive index layers contacting each other and the two low-refractive index layers being disposed entirely between the substrate and the first electrode.
2. The electro-optical device according to claim 1 ,
the plurality of material layers including at least one insulating interlayer formed of the low-refractive index material.
3. The electro-optical device according to claim 1 ,
the refractive index of the low-refractive-index layer being 1.5 or less.
4. The electro-optical device according to claim 1 ,
the refractive index of the low-refractive-index layer being 1.2 or less.
5. The electro-optical device according to claim 1 ,
the low-refractive-index material being light-transmissive and porous.
6. The electro-optical device according to claim 1 ,
the low-refractive-index material further including at least one of aerogel, porous silica, magnesium fluoride, fluoropolymers, and porous polymers.
7. The electro-optical device according to claim 1 ,
the low-refractive-index material further including a predetermined material containing at least one of inorganic particles or organic particles.
8. The electro-optical device according to claim 1 ,
the low-refractive-index material further including a gel in which magnesium fluoride particles are dispersed.
9. The electro-optical device according to claim 1 , further comprising:
an active element.
10. The electro-optical device according to claim 9 ,
the active element being a transistor.