Adhesive composition, adhesive film, brightness enhancement film, and backlight unit comprising same

A composition and adhesive technology, applied in the directions of non-polymer adhesive additives, adhesives, optical components, etc., can solve problems such as light leakage and quantum dot damage, and achieve small performance deviation, high applicability, and excellent luminous efficiency. Effect

Inactive Publication Date: 2017-05-10
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, it is difficult to commercialize films using quantum dots due to problems such as characteristics such as quantum dots being easily damaged by moisture and oxygen and light leakage when forming a film

Method used

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  • Adhesive composition, adhesive film, brightness enhancement film, and backlight unit comprising same
  • Adhesive composition, adhesive film, brightness enhancement film, and backlight unit comprising same
  • Adhesive composition, adhesive film, brightness enhancement film, and backlight unit comprising same

Examples

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Effect test

Embodiment 1

[0101] 5 g of polyisobutylene, 3 g of hydrogenated dicyclopentadiene (DCPD) based adhesive, 1.9 g of trimethylolpropane triacrylate (TMPTA), 0.1 g of photoinitiator IGR 184, and 30 g of toluene were mixed to prepare an adhesive agent composition.

[0102] 1% by weight of CdSe / ZnS red quantum dots was added relative to the total weight of the adhesive composition (excluding the solvent of the adhesive composition), and ultrasonic treatment was performed for 30 minutes to uniformly mix the quantum dots. Thereafter, the adhesive composition was coated on a polyethylene terephthalate (PET) film by bar coating. In order to completely remove toluene contained in the adhesive composition, a PET film which was easily removed after being heated in an oven at 100° C. for 10 minutes was laminated on the adhesive coating. In a UV curing machine (D-lamp), subject the film to about 1,000 mJ / cm 2 Next solidify.

[0103] Furthermore, in order to examine the dispersion of quantum dots in th...

Embodiment 2

[0111] Except for using CdSe / ZnS green quantum dots, an adhesive film was prepared by the same method as in Example 1, and then in order to examine the dispersion of quantum dots in the adhesive film, the dispersion was measured by a fluorescence microscope.

Embodiment 3

[0116] 50 mg polyethylene wax (PED 191, Clarient) was subdivided into 20 ml vials and the solution added with 4.95 g toluene was heated to 90°C. The polyethylene wax was adjusted to a concentration of 1% by weight relative to the solution.

[0117] As soon as the solution reached 90 °C, inject the CdSe / ZnS red quantum dot solution at an appropriate concentration (standard: 25 mg / ml toluene), and place the vial in a 50 °C water bath with a preset temperature and stir it by using a stirring bar at 200 rpm. Stir for 1 minute. After 1 minute the vial was removed from the water bath and left in air for 4 minutes, and the stir bar was removed. The vial was left to stand until completely cooled, then 20 g was collected and divided into conical tubes and centrifuged at 3,000 rpm for 5 minutes to wash. After centrifugation, discard the supernatant and pour the same volume of toluene into the precipitated microcapsules and redisperse by vortexing. Repeat the washing process three mor...

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Abstract

The present invention provides an adhesive composition, an adhesive film, a brightness enhancement film, and a backlight unit comprising the same.

Description

technical field [0001] This application claims priority and benefit from Korean Patent Application No. 10-2014-0072466 and No. 10-2014-0072467 filed in the Korean Intellectual Property Office on June 13, 2014, the entire contents of which are incorporated herein by reference. [0002] The present invention provides an adhesive composition, an adhesive film, a brightness enhancing film comprising the adhesive film, and a backlight unit comprising the same. Background technique [0003] Quantum dots are materials having a crystalline structure with a size of several nanometers, and they are composed of hundreds or thousands of atoms. Due to their very small size, quantum dots exhibit quantum confinement effects. The quantum confinement effect means a phenomenon in which an energy band gap of an object increases when the object is reduced to a nanometer size or less. Therefore, when light having a wavelength of energy greater than the energy band gap is incident to the quantu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J11/04C09J123/00G02B5/02
CPCB32B3/30B32B7/12B32B27/06B32B27/18B32B27/28B32B27/281B32B27/283B32B27/286B32B27/288B32B27/30B32B27/302B32B27/308B32B27/32B32B27/34B32B27/36B32B27/365B32B27/38B32B27/40B32B2250/02B32B2250/03B32B2264/10B32B2307/40B32B2307/422B32B2307/7244B32B2307/7246B32B2307/732B32B2457/20C09J123/22C09K11/02C09K11/565C09K11/883G02B5/0231G02B6/0053G02B6/0065C09J11/04G02B6/0011
Inventor 禹昇儿金东烈朴迎焕沈廷燮赵允京朴成卿
Owner LG CHEM LTD
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