| 摘要 |
A light-emitting device includes: a first electrode; a second electrode; and an organic layer that is provided between the first electrode and the second electrode and is formed by stacking a first light-emitting layer and a second light-emitting layer in order from the first electrode side, in which light emitted from the organic layer is reflected by an interface between the first light-emitting layer and the first electrode, passes through the second electrode, and is emitted to the outside of the light-emitting device, a first light-transmitting layer, a second light-transmitting layer, and a third light-transmitting layer are provided on a side of the second light-emitting layer opposite to the first light-emitting layer in order from the second light-emitting layer side, and predetermined conditions are satisfied. |
| 主权项 |
1. A light-emitting device comprising:
a first electrode; a second electrode; and an organic layer that is provided between the first electrode and the second electrode and is formed by stacking a first light-emitting layer and a second light-emitting layer in order from the first electrode side, wherein light emitted from the organic layer is reflected by an interface between the first light-emitting layer and the first electrode, passes through the second electrode, and is emitted to the outside of the light-emitting device, a first light-transmitting layer, a second light-transmitting layer, and a third light-transmitting layer are provided on a side of the second light-emitting layer opposite to the first light-emitting layer in order from the second light-emitting layer side, the following expressions (1) and (2) are satisfied, and either or both of the following expressions (3-A) and (3-B) are satisfied.
(−φ1/2π+m1)·(λ1−150)/2≦L11≦(−φ1/2π+m1)·(λ1+80)/2 (1)(−φ1/2π+n1)·(λ2−30)/2≦L21≦(−φ1/2π+n1)·(λ2+80)/2 (2)L12≦(−φ2/2π+m2+1/2)·(λ1+15)/2, L13≦(−φ3/2π+m3)·(λ1−15)/2, and (−φ4/2π+m4)·λ1−50)/2≦L14 (3-A)L22≦(−φ2/2π+n2+1/2)·(λ2+15)/2, L23≦(−φ3/2π+n3)·(λ2−15)/2, and (−φ4/2π+n4)·(λ2−50)/2≦L24 (3-B) where λ1 is a central wavelength (unit: nm) of an emission wavelength region of the first light-emitting layer, λ2 is a central wavelength (unit: nm) of an emission wavelength region of the second light-emitting layer, L11 is an optical distance (unit: nm) between a first reflective interface, which is the interface between the first light-emitting layer and the first electrode, and a luminescent center of the first tight-emitting layer, L12 is an optical distance (unit: nm) between a second reflective interface, which is an interface between the second light-emitting layer and the first light-transmitting layer, and the luminescent center of the first light-emitting layer, L13 is an optical distance (unit: nm) between a third reflective interface, which is an interface between the first light-transmitting layer and the second light-transmitting layer, and the luminescent center of the first light-emitting layer, L14 is an optical distance (unit: nm) between a fourth reflective interface, which is an interface between the second light-transmitting layer and the third light-transmitting layer, and the luminescent center of the first light-emitting layer, L21 is an optical distance (unit: mu) between the first reflective interface and a luminescent center of the second light-emitting layer, L22 is an optical distance (unit: mu) between the second reflective interface and the luminescent center of the second light-emitting layer, L23 is an optical distance (unit: nm) between the third reflective interface and the luminescent center of the second light-emitting layer, L24 is an optical distance (unit: nm) between the fourth reflective interface and the luminescent center of the second light-emitting layer, φ1 is a phase shift (unit: radian) occurring when light is reflected by the first reflective interface, φ2 is a phase shift (unit: radian) occurring when light is reflected by the second reflective interface, φ3 is a phase shift (unit: radian) occurring when light is reflected by the third reflective interface, φ4 is a phase shift (unit: radian) occurring when light is reflected by the fourth reflective interface, m1 is an integer of 0 or more, n1 is an integer of 0 or more, and m2, m3, m4, n2, n3, and n4 are integers. |
