Quasi-crystal organic light-emitting display panel and method for simulating optical efficiency of the same

Patent metadata

Field	Value
Publication number	US-9490453-B2
Application number	US-201414506708-A
Country	US
Kind code	B2
Filing date	Oct 6, 2014
Priority date	Oct 6, 2014
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

A quasi-crystal organic light-emitting display panel including a first electrode layer, an organic light-emitting layer, a second electrode layer, a buffer layer, a 10-fold quasi-crystal layer and a package cover is provided. The organic light-emitting layer is located on the first electrode layer. The second electrode layer is located on the organic light-emitting layer. The buffer layer is located on the second electrode layer. The 10-fold quasi-crystal layer is located on the buffer layer. The package cover is located on the 10-fold quasi-crystal layer. A method for simulating optical efficiency of the quasi-crystal organic light-emitting display panel is also provided.

First claim

What is claimed is:

1. A quasi-crystal organic light-emitting display panel, comprising:
a first electrode layer;
an organic light-emitting layer, located on the first electrode layer;
a second electrode layer, located on the organic light-emitting layer;
a buffer layer, located on the second electrode layer;
a 10-fold quasi-crystal layer, located on the buffer layer; and
a package cover, located on the 10-fold quasi-crystal layer.

2. The quasi-crystal organic light-emitting display panel as claimed in claim 1 , wherein the first electrode layer is a reflective electrode layer, and the second electrode layer is a transparent electrode layer.

3. The quasi-crystal organic light-emitting display panel as claimed in claim 1 , wherein the organic light-emitting layer comprises an electron transport layer and a hole transport layer, and the electron transport layer is disposed between the hole transport layer and the first electrode layer.

4. The quasi-crystal organic light-emitting display panel as claimed in claim 1 , wherein a material of the buffer layer comprises silicon nitride.

5. The quasi-crystal organic light-emitting display panel as claimed in claim 1 , wherein a thickness of each of the first electrode layer, the organic light-emitting layer, the second electrode layer, the buffer layer and the 10-fold quasi-crystal layer is smaller than 1 μm, and a thickness of the package cover is greater than 1 μm.

6. The quasi-crystal organic light-emitting display panel as claimed in claim 1 , wherein a lattice constant of the 10-fold quasi-crystal layer is 500 nm.

7. A method for simulating optical efficiency of quasi-crystal organic light-emitting display panel, comprising:
providing a quasi-crystal organic light-emitting display panel, wherein the quasi-crystal organic light-emitting display panel comprises a first electrode layer, an organic light-emitting layer, a second electrode layer, a buffer layer, a 10-fold quasi-crystal layer and a package cover, the organic light-emitting layer is located on the first electrode layer, the second electrode layer is located on the organic light-emitting layer, the buffer layer is located on the second electrode layer, the 10-fold quasi-crystal layer is located on the buffer layer, and the package cover is located on the 10-fold quasi-crystal layer;
using a finite-difference time-domain (FDTD) method to simulate a radiation pattern formed by a radiation emitted by the organic light-emitting layer that reaches an interface between the package cover and the 10-fold quasi-crystal layer;
transforming the radiation pattern of the radiation at the interface between the package cover and the 10-fold quasi-crystal layer through a near-to-far-field (NTFF) transformation to obtain a radiation pattern of the radiation at a surface of the package cover away from the 10-fold quasi-crystal layer;
simulating a radiation pattern of the radiation leaving the quasi-crystal organic light-emitting display panel through geometric optics; and
summing energies of the radiation in the air medium on different angle directions to obtain the optical efficiency.

8. The method for simulating optical efficiency of quasi-crystal organic light-emitting display panel as claimed in claim 7 , wherein a thickness of each of the first electrode layer, the organic light-emitting layer, the second electrode layer, the buffer layer and the 10-fold quasi-crystal layer is smaller than 1 μm, and a thickness of the package cover is greater than 1 μm.

9. The method for simulating optical efficiency of quasi-crystal organic light-emitting display panel as claimed in claim 7 , wherein a lattice constant of the 10-fold quasi-crystal layer is 500 nm.

Assignees

• Winbond Electronics Corp

Inventors

• Pan Jui-Wen
• Chiang Che-Wen
• Li Chang-Yi
• Huang Yung-Chih

Classifications

• H10K50/854

  comprising scattering means · CPC title

• H10K59/877 Primary

  comprising scattering means · CPC title

• H01L2251/558

  Electricity · mapped topic

• G09G3/20

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• H01L2933/0091

  Electricity · mapped topic