Organic EL device and electronic apparatus
An organic EL device includes a reflecting layer which has at least light reflectivity, a first electrode which is arranged on the reflecting layer through a first insulating layer, an organic functional layer which is arranged on the first electrode and includes at least a light emitting layer, a second electrode which is arranged on the organic functional layer and has at least light reflectivity, and a holding capacitance. In the organic EL device, an optical resonator which resonates light from the organic functional layer is formed by the reflecting layer and the second electrode, and the holding capacitance is formed using the reflecting layer, the first insulating layer, and the first electrode.
1. An organic EL device including a plurality of pixels, the organic EL device comprising:
a base substrate;
a reflecting layer which is arranged on the base substrate and has light reflectivity;
a first electrode which is arranged on the reflecting layer through a first insulating layer for each pixel and has light transmissivity;
an organic functional layer which is arranged on the first electrode and includes at least a light emitting layer;
a second electrode which is arranged on the organic functional layer and has light reflectivity and light transmissivity; and
a holding capacitance,
an optical resonator which resonates light from the organic functional layer being formed by the reflecting layer and the second electrode, and
the holding capacitance being formed by using the reflecting layer, the first insulating layer, and the first electrode, the holding capacitance being a capacitance connected to terminals of a driving transistor, the driving transistor arranged on a different plane than the holding capacitance.
2. The organic EL device according to claim 1 , further including a first transistor connected to the first electrode,
the holding capacitance being provided between a source of the first transistor and a gate of the first transistor and connected thereto.
3. The organic EL device according to claim 1 ,
the reflecting layer being arranged for each pixel.
4. The organic EL device according to claim 2 ,
the reflecting layer being electrically connected to the gate of the first transistor.
5. The organic EL device according to claim 2 , further comprising a first signal wiring which is provided on a layer which is different from a gate electrode of the first transistor through a second insulating layer, and is different from the reflecting layer through a third insulating layer,
the gate electrode being connected to the first signal wiring through a first contact hole which is provided on the second insulating layer, and
the reflecting layer being connected to the first signal wiring through a second contact hole which is provided on the third insulating layer.
6. The organic EL device according to claim 2 , further including a second transistor which is provided between a second signal wiring and a gate of the first transistor and connected thereto.
7. The organic EL device according to claim 6 ,
a drain of the second transistor being connected to the second signal wiring through a third contact hole which is provided on the second insulating layer.
8. An organic EL device comprising:
a reflecting layer which has at least light reflectivity;
a first electrode which is arranged on the reflecting layer through a first insulating layer;
a second electrode which has at least light reflectivity;
an organic functional layer which is arranged between the first electrode and the second electrode and includes at least a light emitting layer; and
a holding capacitance,
an optical resonator which resonates light from the organic functional layer being formed by the reflecting layer and the second electrode, and
the holding capacitance is formed using the reflecting layer, the first insulating layer, and the first electrode, the holding capacitance being a capacitance connected to terminals of a driving transistor, the driving transistor arranged on a different plane than the holding capacitance.
9. The organic EL device according to claim 1 ,
each pixel adjacent to each other being configured to emit light of a color different from that of an adjacent pixel's light.
10. An electronic apparatus comprising the organic EL device according to claim 1 .
11. An electronic apparatus comprising the organic EL device according to claim 2 .
12. An electronic apparatus comprising the organic EL device according to claim 3 .
13. An electronic apparatus comprising the organic EL device according to claim 4 .
14. An electronic apparatus comprising the organic EL device according to claim 5 .
15. An electronic apparatus comprising the organic EL device according to claim 6 .
16. An electronic apparatus comprising the organic EL device according to claim 7 .
17. An electronic apparatus comprising the organic EL device according to claim 8 .
18. An electronic apparatus comprising the organic EL device according to claim 9 .
19. An organic EL device comprising:
a reflecting layer;
a first insulating layer disposed on the reflecting layer;
a first electrode disposed on the insulating layer;
an organic functional layer disposed on the first electrode;
a second electrode disposed on the organic functional layer; and
a holding capacitor, wherein the reflecting layer, the first insulating layer, and the first electrode define the holding capacitor, the holding capacitor being a capacitor connected to terminals of a driving transistor, the driving transistor arranged on a different plane than the holding capacitor.
20. The organic EL device of claim 19 further comprising an optical resonator that includes the reflecting layer and the second electrode, wherein a distance between the reflecting layer the second electrode sets a resonant wavelength.
21. The organic EL device according to claim 19 , further comprising a first transistor connected to the first electrode,
a capacitance of the holding capacitor being provided between a source of the first transistor and a gate of the first transistor and connected thereto.
22. The organic EL device according to claim 21 , further comprising a first signal wiring which is provided on a layer which is different from a gate electrode of the first transistor through a second insulating layer, and is electrically isolated from the reflecting layer via a third insulating layer,
the gate electrode being connected to the first signal wiring through a first contact hole which is provided in the second insulating layer, and
the reflecting layer being connected to the first signal wiring through a second contact hole which is provided in the third insulating layer.
23. The organic EL device according to claim 19 , being for a plurality of pixels, each pixel adjacent being configured to emit light of a different color.