Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Light-emitting unit, preparation method thereof, display panel and display equipment

A technology of light-emitting unit and light-emitting layer, applied in electrical components, semiconductor/solid-state device manufacturing, semiconductor devices, etc., can solve the problems of short service life and low efficiency of light-emitting layer, and achieve the effect of changing the transmission.

Pending Publication Date: 2021-11-05
BOE TECH GRP CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the existing methods, the present application proposes a light-emitting unit and its preparation method, a display panel, and a display device to solve the technical problems of low efficiency or short service life of the light-emitting layer of blue-light OLEDs in the prior art

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
  • Light-emitting unit, preparation method thereof, display panel and display equipment
  • Light-emitting unit, preparation method thereof, display panel and display equipment
  • Light-emitting unit, preparation method thereof, display panel and display equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The present application is described in detail below, and examples of embodiments of the present application are shown in the drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. Also, detailed descriptions of known technologies will be omitted if they are not necessary to illustrate the features of the present application. The embodiments described below by referring to the figures are exemplary only for explaining the present application, and are not construed as limiting the present application.

[0047] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be u...

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 embodiment of the invention provides a light-emitting unit, a preparation method thereof, a display panel and display equipment. The light-emitting unit comprises an electron blocking layer and a light-emitting layer which are laminated in sequence; the difference value of absolute values of a main body material and a doping material included in the light-emitting layer at the highest occupied orbit energy level is not greater than a first design value, and the highest occupied orbit energy level of the electron blocking layer is within the range of the first design energy level; or, the difference value of the absolute values of the main body material and the doping material at the highest occupied orbit energy level is not smaller than the first design value and not larger than a second design value, the highest occupied orbit energy level of the electron blocking layer is within the range of the second design energy level, a triplet state energy level is not smaller than a third design value, and the material of the electron blocking layer comprises a carbazole structure. According to the light-emitting unit, preparation method thereof, the display panel and the display equipment of the embodiment of the invention, the disorder degree of the material system of the electron blocking layer is adjusted through the matching of the main body material, the doping material and the electron blocking layer, so that the light-emitting unit with higher light-emitting layer efficiency or longer service life is obtained.

Description

technical field [0001] The present application relates to the field of display technology, in particular, the present application relates to a light-emitting unit and a preparation method thereof, a display panel, and a display device. Background technique [0002] With the development of OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display technology, OLED display devices have been widely used. OLED (Organic Light Emitting Diode) screens have the characteristics of self-illumination, high contrast, light and thin, fast response, wide viewing angle, low power consumption, wide applicable temperature range, low cost, and simple manufacturing process. , TV screens, mobile phone screens and other fields have been more and more widely used, and have broad application prospects. [0003] However, current blue OLEDs have low emissive layers or short lifetimes. Contents of the invention [0004] In view of the shortcomings of the existing methods, the prese...

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 Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/56H01L27/32
CPCH10K59/10H10K85/6572H10K50/11H10K2101/40H10K50/12H10K50/18H10K71/00
Inventor 陈雪芹陈磊
Owner BOE TECH GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com