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

Quantum dot ink, electroluminescent device and preparation method of electroluminescent device

A quantum dot light-emitting, quantum dot technology, applied in the direction of electrical solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problem of poor film thickness uniformity of the quantum dot light-emitting layer, affecting the luminous effect of QLED devices, and the side of the pixel defining part Problems such as climbing, to avoid the coffee ring effect, improve the luminous effect, and improve the uniformity of film thickness

Pending Publication Date: 2020-10-13
SUZHOU XINGSHUO NANOTECH CO LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the light-emitting functional layer in QLED devices is mainly formed by inkjet printing process, and the quantum dot solution is accurately filled into the pixel opening defined by the pixel defining part through the inkjet printer to form the light-emitting functional layer. The film thickness uniformity of the quantum dot light-emitting layer is poor, and it is easy to have a coffee ring effect or climb on the side of the pixel boundary, which easily affects the luminous effect of the QLED device

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
  • Quantum dot ink, electroluminescent device and preparation method of electroluminescent device
  • Quantum dot ink, electroluminescent device and preparation method of electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The technical solutions in the embodiments of the present application will be described in detail below in conjunction with the implementation manners of the present application. It should be noted that the described implementations are only some of the implementations of the present application, not all of the implementations.

[0031] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0032] As mentioned in the background technology, the coffee ring phenomenon exists after quantum dot ink printing. The exi...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

The invention provides quantum dot ink, an electroluminescent device and a preparation method of the electroluminescent device. The quantum dot ink comprises quantum dots, magnetic particles and a polar organic solvent. According to the quantum dot ink, the quantum dots and magnetic particles are effectively dissolved through the polar organic solvent, external magnetic field is applied to controlthe moving direction of the magnetic particles, and most of the magnetic particles are deposited on the side, close to an anode, of the quantum dot ink, so the amount of quantum dots flowing to the periphery of a pixel opening in the pixel opening is reduced, the film thickness uniformity of a quantum dot light-emitting layer formed in the pixel opening is improved, the coffee ring effect or theclimbing phenomenon is avoided, and then the light-emitting effect of the electroluminescent device is improved.

Description

technical field [0001] The application belongs to the technical field of quantum dot ink, and in particular relates to a quantum dot ink, an electroluminescence device and a preparation method thereof. Background technique [0002] Quantum dots, also known as semiconductor nanocrystals, are a new type of semiconductor nanomaterials, which have unique photoluminescence (PL) and electroluminescence (EL) due to quantum size effects and dielectric confinement effects. performance. Compared with traditional organic fluorescent dyes, quantum dots have high quantum yield, high photochemical stability, not easy to photolysis, wide excitation, narrow emission, high color purity, luminous color can be adjusted by controlling the size of quantum dots, etc. Optical properties have broad application prospects in the field of display technology, among which quantum dot light-emitting devices (QLED devices), as one of the most concerned application methods, have become a research hotspot....

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): C09D11/30C09D11/38C09D11/50H01L51/00H01L51/50H10K99/00
CPCC09D11/30C09D11/38C09D11/50H10K71/135H10K50/11
Inventor 王思元韦艳君张熙之张思源
Owner SUZHOU XINGSHUO NANOTECH 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