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Color conversion film and back light unit and display apparatus comprising the same

A technology of color conversion and green light, which is applied in the direction of optical components, film/sheet adhesives, optics, etc., can solve problems such as rise and use restrictions, achieve the effect of expanding the scope and avoiding the decline of optical performance

Active Publication Date: 2016-08-17
LG CHEM LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cadmium-based quantum dots have safety concerns, such as restrictions on use, so there has been increasing interest in making backlights using cadmium-free quantum dots that are relatively free of safety concerns

Method used

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  • Color conversion film and back light unit and display apparatus comprising the same
  • Color conversion film and back light unit and display apparatus comprising the same
  • Color conversion film and back light unit and display apparatus comprising the same

Examples

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Embodiment 1

[0089] After separating the release film from the vulcanized rubber-based adhesive sheet, the adhesive sheet was laminated to a color conversion layer comprising a resin matrix (SAN) and an organic fluorescent substance (0.2 parts by weight organic fluorescent substance based on 100 parts by weight of resin) and attach the PET film to it. The glass transition temperature of the vulcanized rubber-based adhesive sheet was measured to be -50°C using a DSC (Differential Scanning Calorimeter) apparatus.

[0090] Using the color conversion film prepared above, at N 2 Atmospheric conditions, 60°C driving conditions (conditions where light emitted from a blue LED backlight having a maximum emission wavelength in the range of 440nm to 460nm is irradiated on the entire color conversion film at 60°C using a light guide plate), 60°C / 90% relative The color conversion film maintained 95% or more of brightness compared to the initial brightness for 500 hours or longer when changes over time...

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Abstract

The invention described in the present specification relates to a color conversion film including a color conversion layer including a resin matrix; and an organic fluorescent substance dispersed in the resin matrix, and absorbing blue or green light and emitting light having a wavelength different from the absorbing light; and a sticking sheet provided on at least one surface of the color conversion layer, and including a cured material of a radical curable component, a method for manufacturing the same, and a back light unit.

Description

technical field [0001] The present application relates to a color conversion film, and a backlight unit and a display device including the color conversion film. [0002] This application claims priority from Korean Patent Application No. 10-2015-0018937 filed with the Korean Intellectual Property Office on February 6, 2015, the entire contents of which are incorporated herein by reference. Background technique [0003] As large-screen TVs became more common, they became high-definition, thinner and more functional. High-performance and high-definition OLED TVs still have price competitiveness issues, and the real market for OLED TVs has not yet begun. Therefore, efforts to similarly secure the advantages of OLEDs over LCDs need to be continued. [0004] As one of these efforts, many quantum dot-related technologies and prototypes have been introduced recently. However, cadmium-based quantum dots have safety issues, such as restrictions on use, and thus there has been inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02
CPCC09J7/22C09J2425/006C09J2301/122C09J2301/41G02B1/14G02B1/04C08L2666/70
Inventor 徐周延安秉寅申东穆金娜丽背冏烈金志浩
Owner LG CHEM LTD
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