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

Organic electroluminescence device and preparation method thereof

An electroluminescent device and electroluminescent technology, which are applied in the fields of electro-solid devices, semiconductor/solid-state device manufacturing, electrical components, etc., and can solve the problems of white light efficiency and life limit, complex process, and rising driving voltage.

Active Publication Date: 2013-08-21
KUNSHAN VISIONOX DISPLAY TECH +2
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technology does not use a precision evaporation mask, which saves preparation steps and improves material utilization, it cannot be used in actual production so far due to the limitation of white light's own efficiency and lifespan.
In order to improve the lifetime of white light, a stacked structure can be used, but this leads to an increase in the driving voltage and a complicated process
For white light devices with a top-emitting structure, it is very difficult to adjust the chromaticity due to the influence of optical interference

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
  • Organic electroluminescence device and preparation method thereof
  • Organic electroluminescence device and preparation method thereof
  • Organic electroluminescence device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0149] According to the bottom emission colored OLED display screen of a preferred embodiment of the present invention (see figure 2 ) The specific preparation method is as follows:

[0150] 1) Preparing color filters for red light sub-pixels and green light sub-pixels on the substrate;

[0151] 2) preparing a flat layer covering the color filter film and the substrate on the above substrate;

[0152] 3) On the above flat layer, prepare an ITO thin film;

[0153] 4) Etching the ITO anode pattern;

[0154] 5) An insulating layer is prepared on the ITO to form a plurality of light-emitting pixels, each pixel has three sub-pixels of red, green and blue, and the red and green sub-pixels correspond to the color filters of the red and green sub-pixels;

[0155] 6) transferring the above-mentioned substrate to the plasma processing chamber of the evaporation equipment for plasma processing;

[0156] 7) The above-mentioned substrate is loaded with the opening mask-1 and transport...

Embodiment 2

[0186] According to a top-emission color OLED display screen of a preferred embodiment of the present invention (see Image 6 ) The specific preparation method is as follows:

[0187] 1) prepare the alloy / ITO film of ITO / silver and palladium on the substrate;

[0188] 2) Etching the alloy of ITO / silver and palladium / ITO anode pattern;

[0189] 3) An insulating layer is prepared on the ITO to form multiple light-emitting pixels, and each pixel has three sub-pixels of red, green and blue;

[0190] 4) transferring the above-mentioned substrate to the plasma processing chamber of the evaporation equipment for plasma processing;

[0191] 5) The above-mentioned substrate is loaded with the opening mask-1 and transported to the organic chamber 1 for evaporation of the HIL layer;

[0192] 6) Put the above-mentioned substrate on the precision evaporation mask-HIL-R and transfer it to the organic chamber 1 for precise alignment, and align the hollow part of the precision evaporation ...

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 provides an organic electroluminescence device. The organic electroluminescence device comprises a red subpixel, a green subpixel and a blue subpixel. The device sequentially comprises a public base plate; an indium tin oxide (ITO) layer, a hole transmission layer, illumination layers and a public cathode, wherein the illumination layers of the three subpixels, namely the red subpixel, the green subpixel and the blue subpixel, have the same blue light layer; the illumination layers of the red subpixel and the green subpixel have the same yellow light layer; and the blue light layer and the yellow light layer are superposed in the red subpixel and the green subpixel. In addition, the invention also provides a method for preparing the organic electroluminescence device.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescence display, and relates to an organic electroluminescence device and a preparation method thereof. Background technique [0002] Each pixel of a color OLED (organic light-emitting diodes) display screen includes at least three sub-pixels of red (R), green (G), and blue (B). The patterning of the three sub-pixels RGB is the key to the OLED manufacturing method technology. In the prior art, colorization is mainly realized through the following two methods. [0003] One is to sequentially vapor-deposit three colors of RGB on the substrate. This technology is currently widely used in the industry. However, since this technical solution requires repeated use of a precise evaporation mask (shadowmask), there are problems of low material utilization and low productivity, which in turn leads to an increase in cost. In addition, due to the limitation of evaporation precision, the resolu...

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): H01L27/32H01L51/50H01L51/56
Inventor 邱勇刘嵩李艳蕊
Owner KUNSHAN VISIONOX DISPLAY TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com