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Light-emitting device, display device having same, and lighting device

A light-emitting device and light-emitting layer technology, applied in the field of optics, can solve the problems that the light extraction structure is not suitable for small-area light-emitting devices, etc., achieve significant light extraction effects, improve light extraction efficiency, and prolong service life

Pending Publication Date: 2021-05-25
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a light-emitting device, a display device and a lighting device with it, so as to solve the problem that the light extraction structure in the prior art is not suitable for small-area light-emitting devices

Method used

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  • Light-emitting device, display device having same, and lighting device
  • Light-emitting device, display device having same, and lighting device
  • Light-emitting device, display device having same, and lighting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]The light emitting device provided in this embodiment is a top emission light emitting device, such asfigure 1 As shown, the light transmissive substrate 10, the light-emitting function layer 20, and the light extraction function layer 30, the light-emitting function layer 20, the light-emitting function layer 20, the light-emitting function layer 20, and the light-emitting layer 220, the electron-injection transmission layer and the reflective electrode 230. And the light-transmitting electrode 210 and the reflective electrode 230 are independently located on both sides of the light-emitting layer 220, and the light extraction function layer 30 includes a light extraction layer; the light emitting device further includes a pixel isolation structure disposed on the first surface of the transparent substrate 10. A 3 * 3 * 3 (RGB) sub-pixel area is formed between the pixel isolation structure; the light-emitting function layer 20 is disposed in one one in the sub-pixel region; t...

Embodiment 2

[0059]The difference between the light emitting device provided in this embodiment is:

[0060]The thickness T of the light-emitting unit is 1 μm, wherein the total thickness of each functional layer of the light emitting unit is 150 nm, the light transmitting electrode ITO is 100 nm, the interface layer NPB is 50 nm, and the light extraction function layer has a thickness of 700 nm. The shortest length W of the light-emitting surface of the above light-emitting unit is 10 μm.

Embodiment 3

[0062]The difference between the light emitting device provided in this embodiment is:

[0063]The thickness T of the light-emitting unit is 1 μm, wherein the total thickness of each functional layer of the light emitting unit is 150 nm, the light transmitting electrode ITO is 100 nm, the interface layer NPB is 50 nm, and the light extraction function layer has a thickness of 700 nm. The light-emitting surface of the light-emitting unit is an elliptical, and the shortest length W is 20 μm.

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Abstract

The invention provides a light-emitting device, a display apparatus having the same, and a lighting apparatus. The light-emitting device comprises a light-emitting unit arranged in a sub-region, the light-emitting unit comprises a light-emitting functional layer, a light extraction functional layer and a partially light-transmitting substrate which are stacked, wherein the light extraction functional layer is located on the light-emitting side of the light-emitting functional layer; a straight line which passes through the geometric center of the light-emitting surface of the light-emitting unit and two ends of which are connected with the side line of the light-emitting unit is defined as a first straight line; the shortest length of the first straight line is W; the thickness of the light-emitting unit in the direction perpendicular to the light-transmitting substrate is T; and the light extraction function layer can meet the application condition of universal application by enabling T to be smaller than W. Therefore, no matter whether the light-emitting device is applied to a small-area light-emitting device or a large-area light-emitting device, a remarkable light extraction effect can be achieved, the light extraction efficiency of the light-emitting unit is further improved, and the service life of the device is prolonged.

Description

Technical field[0001]The present invention relates to the field of optical technology, and in particular, there is a light emitting device having a display device and a lighting device thereof.Background technique[0002]Light extraction technology has a wide range of applications in the display device or in the lighting, the former effect is to collect and extend to the entire plane near the LED lamp beads like "point light source", collect and extend to the entire plane, and through some of the prism array The light extraction structure is intended to be in the direction of the filter; the light source is completely different, such as the OLED and other lighting panel itself is a soft side light source, no brightness, uniformity, light The application of the extraction structure is mainly guided by light in which the OLED device structure cannot be emitted due to total reflection, thereby improving the overall light emitting efficiency of the device, and extends the service life of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/50H01L27/32
CPCH10K59/122H10K50/11H10K59/80518H10K59/877H10K59/35H10K2102/331H10K50/115H10K50/16H10K50/15H10K50/854H10K50/171H10K59/353
Inventor 甄常刮顾辛艳
Owner NANJING TECH CORP LTD