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Laminated film

A technology of laminated film and laminated body, which is applied in the direction of lamination, coating, layered products, etc., and can solve problems such as quantum dot degradation

Active Publication Date: 2018-03-27
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, if the two sides of the quantum dot layer are sandwiched only by the gas barrier film, moisture or oxygen will permeate into the quantum dot layer from the end surface not covered by the gas barrier film, resulting in the deterioration of the quantum dot.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0310] A laminated film 10 as shown in FIG. 1 was fabricated.

[0311]

[0312] >

[0313] As a support for the gas barrier layer 14, a polyethylene terephthalate film (PET film, manufactured by Toyobo Co., Ltd., trade name: COSMOSHINE A4300, thickness 50 μm, width 1000 mm, length 100 m) was used.

[0314] >

[0315] The organic layer 24 is formed on one side of the support body 20 as follows.

[0316] First, a composition for forming the organic layer 24 was prepared. Specifically, trimethylolpropane triacrylate (TMPTA, manufactured by Daicel-Cytec Company, Ltd.) and a photopolymerization initiator (manufactured by Lamberti S.p.A, ESACUREKTO46) were prepared so that the mass ratio of TMPTA:photopolymerization initiator was 95 :5, these were dissolved in methyl ethyl ketone to prepare a composition with a solid content concentration of 15%.

[0317] Using this composition, the organic layer 24 was formed on one side of the support 20 by a general film-forming apparatus t...

Embodiment 2

[0360] Stack the function layers like Figure 4 A laminated film was produced in the same manner as in Example 1, except that the functional layer laminate 18A shown was a circular arc-shaped planar laminate with corner notches at a central angle of 90°.

[0361] In addition, the radius r of the arc is 0.5 mm.

Embodiment 3

[0363] Stack the function layers like Figure 5A laminated film was produced in the same manner as in Example 1 except that the functional layer laminate 18B shown was a planar laminate obtained by cutting the corners into a square shape.

[0364] In addition, the length b of the notch at the corner of the end face was 0.5 mm.

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Abstract

The present invention addresses the problem of providing a laminated film having a functional layer such as a quantum dot layer, wherein it is possible to prevent degradation, due to the intrusion ofoxygen or the like from an end face, of a member expressing a quantum dot function, and wherein the laminated film has an appropriate shape. In order to solve the problem, the laminated film comprisesa functional layer laminated body having a functional layer and a gas barrier layer laminated onto the functional layer, and an end face sealing layer covering at least a part of an end face of the functional layer laminated body. In addition, the planar shape of the functional layer laminated body is formed as a shape obtained by cutting off corner parts of a polygon, or the end face of the functional layer laminated body is formed in a tapered shape.

Description

technical field [0001] The present invention relates to a laminated film used for backlights of liquid crystal display devices and the like. Background technique [0002] Liquid crystal display devices (hereinafter, also referred to as LCDs) are expanding their applications year by year as image display devices that consume less power and save space. Further, in liquid crystal display devices in recent years, further power saving, improvement of color reproducibility, and the like are required to improve LCD performance. [0003] With the demand for power saving in LCDs, it has been proposed to use quantum dots in backlights that convert the wavelengths of incident light and emit them in order to improve light utilization efficiency in backlights (backlight units) and improve color reproducibility. [0004] A quantum dot is a state of electrons whose movement direction is restricted in all three-dimensional directions, and when a semiconductor nanoparticle is three-dimensio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B3/02H01L51/50H05B33/04H05B33/12B32B1/00
CPCB32B3/02B32B37/185B32B38/0004B32B2255/10B32B2255/20B32B2457/202C23C16/345B32B7/12B32B27/08B32B23/04B32B2250/44B32B27/32B32B27/34B32B27/302B32B27/36B32B27/325B32B27/28B32B27/281B32B27/365B32B27/308B32B27/304B32B27/306B32B2255/26B32B2255/28B32B2255/24B32B2307/546B32B2307/412B32B2307/7244B32B2307/422B32B2307/732H10K77/111H10K50/844B32B9/00H10K50/00B29C41/003B29C41/46B29K2033/08B29K2063/00B29K2995/0067B29L2007/008B32B27/20B32B27/38B32B2307/7242C23C16/50
Inventor 国安谕司斋川保
Owner FUJIFILM CORP