Light emitting display panel and electronic device including the same
AssigneeSamsung Display Co., Ltd.
InventorsHyun-gue SONG, Heeseong JEONG, Dahye KIM, Sunhwa KIM
Life of this patent
Estimating the term…
Abstract
By controlling the optical thickness of the upper stacked structure disposed on the display panel, it is possible to periodically control the tristimulus value of Xr and the tristimulus value of Yg emitted from the electronic device. The optical thickness is determined by the thickness and refractive index of the upper stacked structure. This control may reduce the tristimulus value of Xr periodically or increase the tristimulus value of Yg periodically. The tristimulus value of Xr may be periodically decreased and the tristimulus value of Yg may be periodically increased at the same time.
Claims20
A light emitting display panel comprising:
- a base layer;
- a light emitting element including a first electrode disposed on the base layer, a light emitting layer disposed on the first electrode, and a second electrode disposed on the light emitting layer;
- and
- a stacked structure disposed on the light emitting element and including a plurality of layers,
- wherein a first layer to a q-th layer among the plurality of layers satisfy at least one of the following Equations 1 and 2, the first layer contacts with the second electrode,
- 2
-
- π
-
-
- m
- +
- 2
-
- π
- 3
- <
- 2
-
- n
- 1
- ,
- z
-
- d
- 1
-
- 1
- -
- 1
- n
- 1
- 2
-
- sin
- 2
-
- θ
- air
-
- 2
-
- π
- λ
- +
- 2
-
- n
- 2
- ,
- z
-
- d
- 2
-
- 1
- -
- 1
- n
- 2
- 2
-
- sin
- 2
-
- θ
- air
-
- 2
-
- π
- λ
-
-
- …
-
-
- 2
-
- n
- q
- ,
- z
-
- d
- q
-
- 1
- -
- 1
- n
- q
- 2
-
- sin
- 2
-
- θ
- air
-
- 2
-
- π
- λ
- +
- φ
- 1
- ,
- C
-
-
- E
- +
- φ
- q
- ,
- q
- +
- 1
- <
- 2
-
- π
-
-
- m
- +
- 4
-
- π
- 3
- [
- Equation
-
-
- 1
- ]
- 2
-
- π
-
-
- m
- +
- 5
-
- π
- 3
- <
- 2
-
- n
- 1
- ,
- z
-
- d
- 1
-
- 1
- -
- 1
- n
- 1
- 2
-
- sin
- 2
-
- θ
- air
-
- 2
-
- π
- λ
- +
- 2
-
- n
- 2
- ,
- z
-
- d
- 2
-
- 1
- -
- 1
- n
- 2
- 2
-
- sin
- 2
-
- θ
- air
-
- 2
-
- π
- λ
-
-
- …
-
-
- 2
-
- n
- q
- ,
- z
-
- d
- q
-
- 1
- -
- 1
- n
- q
- 2
-
- sin
- 2
-
- θ
- air
-
- 2
-
- π
- λ
- +
- φ
- 1
- ,
- C
-
-
- E
- +
- φ
- q
- ,
- q
- +
- 1
- <
- 2
-
- π
-
- (
- m
- +
- 1
- )
- +
- π
- 3
- [
- Equation
-
-
- 2
- ]
- in Equations 1 and 2, m is 0 and a natural number, nl,z to nq,z are refractive indices in a thickness direction of each of the first layer to the q-th layer, d1 to dq are respective thicknesses of the first layer to the q-th layer, θair is 20° to 40°, λ in Equation 1 is 610 nm or more and 645 nm or less, and λ in Equation 2 is 515 nm or more and 545 nm or less, in Equations 1 and 2, 01,CE is the following Equation 3,
- φ
- 1
- ,
- CE
- =
- tan
- -
- 1
-
- (
- Im
-
- (
- r
- 1
- ,
- CE
- )
- Re
-
- (
- r
- 1
- ,
- CE
- )
- )
- ,
- [
- Equation
-
-
- 3
- ]
- in Equation 3, r1,CE is defined as a reflection coefficient of the first layer for the light emitting element, and if Im(r1,CE)≥0, 0≤Φ1, CE≤π and if Im(r1,CE)<0, π<Φ1,CE<2π, and
- in Equations 1 and 2, if the refractive index of the q-th layer is larger than the refractive index of a q+1th layer, Φq,q+1 is π and if the refractive index of the q-th layer is smaller than the refractive index of the q+1th layer, Φq,q+1 is 0.
An electronic device comprising:
- a light emitting display panel;
- and
- a window disposed on the light emitting display panel,
- wherein when the light emitting display panel displays a single white image, a graph showing an intensity of light of the single white image measured at a height of 30 cm from the window and at a viewing angle of 20° to 40° in the CIE 1931 color coordinates is disposed on the left and top of a block body curve.
Dependencies are inferred from the claim text.