Light-emitting element, display device, quantum dot dispersion liquid, and method for forming light-emitting layer

A light-emitting layer with quantum dots encapsulated in an inorganic matrix using specific solvents with low surface tension and high boiling points addresses the issue of matrix concentration in QLEDs, ensuring consistent performance and reliability by preventing clouding and cracking.

WO2026126409A1 Publication Date: 2026-06-18SHARP DISPLAY TECHNOLOGY CORP
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SHARP DISPLAY TECHNOLOGY CORP
Filing Date
2024-12-12
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

The rapid concentration of siloxane in the light-emitting layer of quantum dot light-emitting diodes (QLEDs) leads to clouding or cracking, resulting in decreased light-emitting properties and reliability.

⚗Method used

Incorporating a light-emitting layer with quantum dots encapsulated in a matrix containing an inorganic compound, using a dispersion medium with a surface tension lower than water at 25°C and a boiling point higher than that of water at 1 atmosphere, and incorporating specific materials such as butoxyethanol, heptanone, decylmethyl ether, nonane, and decane, and decane, and decane, and decane, and incorporating specific materials such as butoxyethanol, heptanone, decylmethyl ether, nonane, and decane, which have lower surface tension and higher boiling points than water, to suppress matrix concentration and cracking.

🎯Benefits of technology

The solution effectively prevents matrix clouding and cracking, maintaining light-emitting properties and reliability by ensuring uniform dispersion and controlled drying of the matrix, thereby enhancing the performance and longevity of QLEDs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A red light-emitting element (5R) is provided with a red light-emitting layer (24 REM) including quantum dots (QD) and a matrix (MR) containing an inorganic compound. The quantum dots (QD) are embedded in the matrix (MR). The matrix (MR) includes a material (DCA) having material-specific properties whereby the surface tension at 25°C is smaller than water and the boiling point at 1 atmosphere is higher than water.
Need to check novelty before this filing date? Find Prior Art