Photoconversion film, and photoconversion element and display device comprising same

A light-conversion film and light-conversion technology, applied in electrical components, luminescent materials, semiconductor devices, etc., can solve problems such as thermal or light stability reduction, film optical characteristics decline, etc., and achieve the effect of increasing the usable life

Active Publication Date: 2017-09-26
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to increase the conversion efficiency of light by organic fluorescent dyes and the intensity of the converted light, it is necessary to increase the concentration, and in this case, extinction caused by the concentration cannot be avoided, and in particular, known effects on heat or light reduced stability
In view of the above, attempts have been made to improve stability by coating an adhesive / adhesive on a light conversion film containing an organic fluorescent dye and laminating a barrier film thereon, however, there are optical characteristics of the film due to the adhesive / adhesive material. drop problem, etc.

Method used

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  • Photoconversion film, and photoconversion element and display device comprising same
  • Photoconversion film, and photoconversion element and display device comprising same
  • Photoconversion film, and photoconversion element and display device comprising same

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Embodiment Construction

[0042] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings.

[0043] A light conversion film according to an embodiment of the present application has one or more types of organic fluorescent dyes dispersed in a polymer medium comprising one or more types of ionic polymers.

[0044] The light conversion film according to the embodiment described in this specification functions to convert light entering from a light source including light of a wavelength selected in the near ultraviolet to visible region into light having a specific wavelength (color). In addition, the light conversion film functions to convert light entering from the LED light source into white light and emit the light.

[0045] Herein, the light conversion film may contain organic fluorescent dyes capable of exhibiting excellent color purity and color gamut. As the organic fluorescent dye, a dye that absorbs light of a selected wavel...

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Abstract

The present application relates to a photoconversion film, and a photoconversion element, backlight unit and display device comprising same, the photoconversion film having one type or more of an organic fluorescent dye dispersed in a polymer medium comprising one type or more of an ionic polymer.

Description

technical field [0001] The present disclosure relates to a light conversion film and a light conversion device including the same. Background technique [0002] Generally, fluorescent substances are luminescent materials that emit light with a unique wavelength by absorbing energy in the form of light or electricity from the outside, and can be divided into inorganic fluorescent substances, organic fluorescent dyes, nano Crystal fluorescent substances, etc. [0003] Recently, various attempts have been made to change the spectrum of the light source using such fluorescent substances. This involves fluorescent substances absorbing light of some specific wavelengths emitted from a light source, converting these lights into light with longer wavelengths in the visible light region and emitting the light, and depending on the light-emitting characteristics of the fluorescent substance, the emitted light can be greatly improved. Light brightness, color purity, color gamut, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50
CPCH01L33/501H01L33/502H01L33/504H01L2933/0041C09K11/02C09K11/06H01L33/507B32B7/12B32B27/08B32B27/306B32B2250/40B32B2307/402B32B2307/412B32B2307/7244B32B2307/7265B32B2457/20C09K11/025C09K2211/1011
Inventor 申斗铉徐有境林正浩金志浩
Owner LG CHEM LTD
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