Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for manufacturing organic light-emitting diode with holographic speckle structure

A technology for a light-emitting diode and a manufacturing method, which is applied in the manufacture of semiconductor/solid-state devices, semiconductor devices, electrical components, etc., can solve the problems of difficult control of the groove depth of the nano moth-eye structure, increased leakage current, and inability to achieve enhanced directional luminous efficiency, etc. Achieve the effect of improving dispersion and spectral drift, and directionally enhancing light output

Inactive Publication Date: 2017-12-26
江苏弗吉亚模具科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the periodic grating structure is easy to cause dispersion and band shift; the preparation process of random folds is complicated, the controllability and repeatability are poor, and the groove depth of the nanomoth-eye structure is difficult to control, which is easy to cause increased leakage current
More importantly, none of the above solutions can achieve directional luminous efficiency enhancement, while directional luminous efficiency enhancement can achieve directional contrast enhancement, and directional contrast enhancement is particularly important for displaying in strong light environments, such as mobile phones in sunlight. Enhanced contrast across the range makes screen displays clearer and more vibrant

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for manufacturing organic light-emitting diode with holographic speckle structure
  • Method for manufacturing organic light-emitting diode with holographic speckle structure
  • Method for manufacturing organic light-emitting diode with holographic speckle structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: The angle between the speckle object light and the reference light is 45 degrees.

[0043] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] The invention discloses a method for manufacturing an organic light-emitting diode with a speckle structure. join figure 1 As shown, the speckle structure 110 includes quasi-randomly distributed striped grooves 111 , quasi-randomly distributed speckled pits 112 and quasi-randomly distributed convex stripes 113 .

[0045] see figure 2 and image 3 As mentioned ...

Embodiment 2

[0069] Embodiment 2: The angle between the speckle object light and the reference light is 30 degrees.

[0070] In Embodiment 2, the angle between the speckle object light and the reference light is 30 degrees, and all other process steps and parameters are completely the same as in Embodiment 1. see Figure 11 , the test results show that within the range of 60-degree and 120-degree field of view, the light extraction efficiency of the present invention is directionally increased by 200%, and the 60-degree directional enhancement of the field of view is agreed to be due to the holographic speckle reproduction of positive and negative first-order images. It is also twice the angle of 30 degrees between the speckle object light and the reference light. It shows that the present invention can realize the enhancement of OLED directional light output by adjusting the angle between the speckle object light and the reference light.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for manufacturing an organic light-emitting diode with a holographic speckle structure. Firstly, the speckle image plane holographic interference fringes are prepared on the photoresist by holographic lithography technology, and then the first electrode layer, organic layer and back electrode are sequentially prepared on the image plane holographic interference fringes, and finally the speckle is prepared by encapsulation Structural organic light-emitting diodes. By adjusting the angle of the holographic interference recording reference light, the directional light emission enhancement of the organic light-emitting diode can be regulated, and the beneficial effect of directional improvement of luminous efficiency can be obtained, and the phenomenon of spectral drift and leakage current increase will not be caused.

Description

technical field [0001] The invention relates to the technical field of organic light emitting diodes, and more specifically, to a method for manufacturing an organic light emitting diode with a holographic speckle structure. Background technique [0002] Organic light-emitting diodes are considered to be the most promising next-generation lighting and display technology after CRT and LCD due to many advantages such as active light emission, low power consumption, all solid state, high luminous brightness, rich colors, and easy realization of flexible display. And has shown a strong momentum of development in commercial product applications. [0003] However, although the internal luminous efficiency of organic light-emitting diodes is close to 100%, due to the refractive index mismatch of each functional layer of the device, most of the photons emitted by the light-emitting layer are still trapped inside the device and lost, only 20% of the light energy able to shoot. And ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/56H01L51/52
CPCH10K50/854H10K71/00
Inventor 周雷童捷范媛媛朱雨富张俊胡光林毅
Owner 江苏弗吉亚模具科技有限公司