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Color conversion layer and display apparatus having the same

A conversion layer and light color technology, applied in the field of light color conversion layer and its display equipment, can solve the problems that the long-term performance of display or lighting equipment cannot be realized, and the surface cannot be effectively protected.

Pending Publication Date: 2020-03-31
NEXDOT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ligands commonly used to functionalize the surface of quantum dots cannot effectively protect said surface from reaction with deteriorating species or harmful compounds, and thus cannot achieve the long-term performance required for display or lighting devices.

Method used

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  • Color conversion layer and display apparatus having the same
  • Color conversion layer and display apparatus having the same
  • Color conversion layer and display apparatus having the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[1457] Embodiment 1: Preparation of inorganic nanoparticles

[1458] The nanoparticles used in the examples herein were prepared according to methods in the art (Lhuillier E. et al., Acc. Chem. Res., 2015, 48(1), pp 22-30; Pedetti S. et al., J .Am.Chem.Soc., 2014, 136(46), pp 16430–16438; Ithurria S. et al., J.Am.Chem.Soc., 2008, 130, 16504–16505; Nasilowski M. et al. , Chem. Rev. 2016, 116, 10934-10982).

[1459] The nanoparticles used in the examples herein are selected from the group consisting of: CdSe / CdZnS, CdSe, CdS, CdTe, CdSe / CdS, CdSe / ZnS, CdSe / CdZnS, CdS / ZnS, CdS / CdZnS, CdTe / ZnS, CdTe / CdZnS , CdSeS / ZnS, CdSeS / CdS, CdSeS / CdZnS, CuInS 2 / ZnS, CuInSe 2 / ZnS, InP / CdS, InP / ZnS, InZnP / ZnS, InP / ZnSeS, InP / ZnSe, InP / CdZnS, CdSe / CdZnS / ZnS, CdSe / ZnS / CdZnS, CdSe / CdS / ZnS, CdSe / CdS / CdZnS , CdSe / ZnSe / ZnS, CdSeS / CdS / ZnS, CdSeS / CdS / CdZnS, CdSeS / CdZnS / ZnS, CdSeS / ZnSe / ZnS, CdSeS / ZnSe / CdZnS, CdSeS / ZnS / CdZnS, CdSe / ZnS / CdS, CdSeS / ZnS / CdS, CdSe / ZnSe / CdZnS, InP / ZnSe / ZnS, InP / CdS / ZnS...

Embodiment 2

[1460] Example 2: Exchange Ligands for Phase Transfer in Basic Aqueous Solutions

[1461] 100 μL of CdSe / CdZnS nanosheets suspended in heptane were mixed with 3-mercaptopropionic acid and heated at 60 °C for several hours. The nanoparticles were then precipitated by centrifugation and redispersed in dimethylformamide. Potassium tert-butoxide was added to the solution, followed by ethanol and centrifugation. Redisperse the final colloidal nanoparticles in water.

Embodiment 3

[1462] Example 3: Exchange Ligands for Phase Transfer in Acidic Aqueous Solutions

[1463] 100 μL of CdSe / CdZnS nanosheets suspended in alkaline aqueous solution were mixed with ethanol and centrifuged. The PEG-based polymer was dissolved in water and then added to the precipitated nanosheets. Acetic acid was dissolved in the colloidal suspension to control the acidic pH.

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PUM

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Abstract

The present invention relates to a color conversion layer (4) comprising at least one light emitting material (7) comprising at least one composite particle (1) surrounded partially or totally by at least one surrounding medium (71); wherein said light emitting material (7) is configured to emit light in response to an excitation and the at least one composite particle (1) comprises a plurality ofnanoparticles encapsulated in an inorganic material; and wherein said inorganic material (2) has a difference of refractive index compared to the at least one surrounding medium (71) superior or equal to 0.02 at 450 nm. The present invention also relates to display apparatus.

Description

technical field [0001] The present invention relates to the use of luminescent composite particles to realize high-efficiency light-color conversion layers and display devices thereof. Background technique [0002] Projectors for presentations or digital cinema are equipped with multiple light sources. With the development of technology and the integration of digital light processing (DLP) technology, light-emitting diodes (LEDs) or laser sources have been used as light sources instead of mercury or halogen lamps and liquid crystal devices (LCDs). LED-based projectors offer many advantages over traditional projectors due to their low power consumption, long lifespan, and better viewing experience such as higher contrast ratios. [0003] It is known from the prior art that a projector may further include a phosphor component excited by the primary light emitted from the light source to emit secondary light having a different color or wavelength relative to the primary light....

Claims

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Application Information

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IPC IPC(8): H01L27/32H01L51/52C09K11/02C09K11/70C09K11/88H01L33/50
CPCC09K11/02C09K11/08G02F1/133603H01L33/501H01L33/502H01L33/505C09K11/025C09K11/565C09K11/703C09K11/883G02B2207/101B82Y20/00C09K11/70H10K59/38H10K2102/331H10K59/8792C09K11/06C09K2211/10G02B6/0026G02F1/133504G02F1/133514G02F1/133605G02F1/133617G02F2201/501G02F2202/10G03B21/008G03B21/204H01L25/0753H01L33/50G02F1/133614H10K50/865
Inventor 马克·保斯托米斯米歇尔·达米科林雨朴
Owner NEXDOT
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