ORGANIC EL DEVICE AND ELECTRONIC APPARATUS
First Claim
1. An organic EL device comprising an organic EL element that includes an anode having a reflective face, a cathode having a semi-transmissive reflective layer, and a functional layer, which is pinched between the anode and the cathode and includes at least an organic light emitting layer, and configures a color pixel that implements light emission corresponding to at least a red color,wherein the color pixel configured by the organic EL element forms an optical resonator between the reflective face of the anode and the semi-transmissive reflective layer of the cathode, andwherein the color pixel corresponding to the red color has a film thickness profile of the functional layer in a convex shape in which a center portion is relatively thick, and a periphery portion is relatively thin or a concave shape in which the center portion is relatively thin, and the periphery portion is relatively thick, and the film thickness R(a) of the center portion of the convex-shaped functional layer or the film thickness R(a) of the peripheral portion of the concave-shaped functional layer satisfies Equations (1) and (2) relating to the length d1 of a resonance light path of the optical resonator.
2 d1=mλ
- +(θ
an*λ
)/2π
+(θ
ca*λ
)/2π
Equation (1)(Here, m is an integer, λ
is a peak wavelength of the spectrum of light desired to be emitted, θ
an is the amount of phase shift in the case of reflection from the anode side, and θ
ca is the amount of phase shift in the case of reflection from the cathode side.)
0.9 d1≦
R(a)≦
1.1 d1
Equation (2)
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Accused Products
Abstract
An organic EL device includes an organic EL element that includes an anode having a reflective face, a cathode having a semi-transmissive reflective layer, and a functional layer, which is pinched between the anode and the cathode and includes at least an organic light emitting layer, and configures a color pixel that implements light emission corresponding to at least a red color. The color pixel configured by the organic EL element forms an optical resonator between the reflective face of the anode and the semi-transmissive reflective layer of the cathode. The color pixel corresponding to the red color has a film thickness profile of the functional layer in a convex shape in which a center portion is relatively thick, and a periphery portion is relatively thin or a concave shape in which the center portion is relatively thin, and the periphery portion is relatively thick.
32 Citations
5 Claims
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1. An organic EL device comprising an organic EL element that includes an anode having a reflective face, a cathode having a semi-transmissive reflective layer, and a functional layer, which is pinched between the anode and the cathode and includes at least an organic light emitting layer, and configures a color pixel that implements light emission corresponding to at least a red color,
wherein the color pixel configured by the organic EL element forms an optical resonator between the reflective face of the anode and the semi-transmissive reflective layer of the cathode, and wherein the color pixel corresponding to the red color has a film thickness profile of the functional layer in a convex shape in which a center portion is relatively thick, and a periphery portion is relatively thin or a concave shape in which the center portion is relatively thin, and the periphery portion is relatively thick, and the film thickness R(a) of the center portion of the convex-shaped functional layer or the film thickness R(a) of the peripheral portion of the concave-shaped functional layer satisfies Equations (1) and (2) relating to the length d1 of a resonance light path of the optical resonator.
2 d1=mλ- +(θ
an*λ
)/2π
+(θ
ca*λ
)/2π
Equation (1)(Here, m is an integer, λ
is a peak wavelength of the spectrum of light desired to be emitted, θ
an is the amount of phase shift in the case of reflection from the anode side, and θ
ca is the amount of phase shift in the case of reflection from the cathode side.)
0.9 d1≦
R(a)≦
1.1 d1
Equation (2) - View Dependent Claims (4, 5)
- +(θ
-
2. An organic EL device comprising an organic EL element that includes an anode having a reflective face, a cathode having a semi-transmissive reflective layer, and a functional layer, which is pinched between the anode and the cathode and includes at least an organic light emitting layer, and configures a color pixel that implements light emission corresponding to at least a blue color,
wherein the color pixel configured by the organic EL element forms an optical resonator between the reflective face of the anode and the semi-transmissive reflective layer of the cathode, and wherein the color pixel corresponding to the blue color has a film thickness profile of the functional layer in a concave shape in which a center portion is relatively thin, and a periphery portion is relatively thick or a convex shape in which the center portion is relatively thick, and the periphery portion is relatively thin, and the film thickness B(a) of the center portion of the concave-shaped functional layer or the film thickness B(a) of the peripheral portion of the convex-shaped functional layer satisfies Equations (1) and (3) relating to the length d1 of a resonance light path of the optical resonator.
2 d1=mλ- +(θ
an*λ
)/2π
+(θ
ca*λ
)/2π
Equation (1)(Here, m is an integer, λ
is a peak wavelength of the spectrum of light desired to be emitted, θ
an is the amount of phase shift in the case of reflection from the anode side, and θ
ca is the amount of phase shift in the case of reflection from the cathode side.)
0.9 d1≦
B(a)≦
1.1 d1
Equation (3) - View Dependent Claims (3)
- +(θ
Specification
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- Resources
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Current AssigneeSeiko Epson Corporation (Seiko Group)
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Original AssigneeSeiko Epson Corporation (Seiko Group)
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InventorsWATANABE, Shotaro, UCHIDA, Masahiro
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current313/504
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CPC Class CodesH10K 2102/3031 Two-side emission, e.g. tra...H10K 2102/351 ThicknessH10K 50/11 characterised by the electr...H10K 50/852 comprising a resonant cavit...H10K 59/876 comprising a resonant cavit...
