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Light-emitting device, production method therefor, and display containing same

A technology of light-emitting device and light-emitting layer, applied in the field of light-emitting device and display, can solve the problems of insufficient light extraction efficiency and the like

Inactive Publication Date: 2011-08-17
UDC IRELAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] As described above, the light-extraction efficiency of the light-emitting device having the conventional structure is insufficient, and thus, the development of a light-emitting device with improved light-extraction efficiency and front brightness is required.

Method used

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  • Light-emitting device, production method therefor, and display containing same
  • Light-emitting device, production method therefor, and display containing same
  • Light-emitting device, production method therefor, and display containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0278] The light-emitting device of Example 1 was fabricated as follows.

[0279]

[0280] Through the following procedure, a fine concave-convex pattern is formed, and then a reflective layer is provided on one side thereof.

[0281] >

[0282]A thin film was formed on a glass substrate using the following Compound A; that is, a compound in which the upper compound and the lower compound were ionically bonded (Compound A has a high refractive index with respect to light having a wavelength of 550 nm (main emission wavelength): n 5 = 1.73).

[0283]

[0284] The material formed from Compound A (35 mg) was dissolved in tetrafluoropropanol (1 mL). The resulting solution was dropped on a glass substrate rotating at 300 rpm. Then, the rotation speed was increased to 1,000 rpm, thereby forming a 200 nm thick film.

[0285] The film was processed using a microfabrication apparatus (NEO1000, product of Pulstec Industrial Co., Ltd.) to form a fine concave-convex pattern with ...

Embodiment 2

[0309] The procedure of Example 1 was repeated except that three interference layers were formed, thereby fabricating the light emitting device of Example 2.

Embodiment 3

[0311] The procedure of Example 1 was repeated except that five interference layers were formed, thereby fabricating the light emitting device of Example 3.

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PUM

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Abstract

The present invention provides a light-emitting device which includes, in the order mentioned, a light-emitting layer containing a light-emitting portion, an interference layer, and a fine concavo-convex pattern, wherein the interference layer is disposed over a second surface of the light-emitting layer which surface is opposite to a first surface of the light-emitting layer, and reflects, toward the first surface, light emitted from the light-emitting layer, and wherein the fine concavo-convex pattern has a cross-sectional shape which has portions projected and recessed with respect to the light-emitting layer, and reflects light emitted from the light-emitting layer.

Description

technical field [0001] The present invention relates to a light-emitting device, a method of manufacturing the same, and a display including the light-emitting device, and more specifically, to such devices as organic electroluminescent devices (organic EL devices), inorganic electroluminescent devices (inorganic EL devices), and light-emitting diodes. A light-emitting device such as (LED), a manufacturing method thereof, and a display including the light-emitting device. Background technique [0002] For example, in image 3 In the illustrated organic EL device 105, light beams emitted from the EL light emitting layer 102 provided on the reflective layer 101 are reflected on the interface between the EL light emitting layer 102 and the sealing layer 103 or between the sealing layer 103 and the exterior 104 , resulting in a reduction in light-extraction efficiency. [0003] Here, regarding the reflectance of light on an interface where light is refracted, when the interface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/02G09F9/30H01L27/32H01L51/50H05B33/10
CPCH01L51/5271H05B33/10H05B33/22H05B33/14H01L51/5268H10K59/878H10K50/856H10K50/854
Inventor 宇佐美由久
Owner UDC IRELAND