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Multi-functional optic sheet

An optical sheet, multi-functional technology, used in optics, optical components, nonlinear optics, etc., can solve the problem of lower than expected increase in brightness, and achieve the effect of improving brightness, preventing damage, and simplifying the production process

Inactive Publication Date: 2010-11-10
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This panel is beneficial in terms of manufacturing cost or productivity, but the problem is that the increase in brightness is much lower than expected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 100 parts by weight of acrylic resin (52-666 available from Aekyung Chemical Co.) was diluted with 30 parts by weight of methyl ethyl ketone and 80 parts by weight of toluene to prepare an adhesive resin with a refractive index of 1.49. Thereafter, the amount of this binder resin was used as a benchmark, adding 150 parts by weight, an average diameter of 20 μm and a refractive index of 1.49 spherical polymethyl methacrylate particles (MH20F sold by Kolon Company), and then performing a single step with a grinder. Monodisperse treatment in layer form, followed by application of the dispersion thus obtained to a thickness of 188 μm using a gravure coater as a substrate layer of an ultra-transparent polyethylene terephthalate film (FHSS available from Kolon Corporation) ), and then cured at 120° C. for 60 seconds to form a light diffusion layer (refractive index 1.49) with a dry thickness of 25 μm.

[0062] In addition, an air layer was formed on one side of this cured lig...

Embodiment 2

[0065] 100 parts by weight of acrylic resin (52-666 available from Aekyung Chemical Co.) was diluted with 30 parts by weight of methyl ethyl ketone and 80 parts by weight of toluene to prepare an adhesive resin with a refractive index of 1.49. Thereafter, the amount of this binder resin was used as a benchmark, adding 150 parts by weight, an average diameter of 20 μm and a refractive index of 1.49 spherical polymethyl methacrylate particles (MH20F sold by Kolon Company), and then performing a single step with a grinder. Monodisperse treatment in layer form, followed by application of the dispersion thus obtained to a thickness of 188 μm using a gravure coater as a substrate layer of an ultra-transparent polyethylene terephthalate film (FHSS available from Kolon Corporation) ), and then cured at 120° C. for 60 seconds to form a light diffusion layer (refractive index 1.49) with a dry thickness of 25 μm.

[0066]Further, a mixture of 5 parts by weight of isobutane particles and ...

Embodiment 3

[0068] With 100 parts by weight of the photosensitive resin composition as the criterion, the content is 5 parts by weight of polymethyl methacrylate particles (MH20F sold by Kolon Company), 5 parts by weight of isobutane particles and the photosensitive resin combination The mixture of materials is applied on one side of an ultra-transparent polyethylene terephthalate film (FHSS available from Kolon Company) as a substrate layer with a thickness of 188 μm, wherein the photosensitive resin composition is made of 60 Parts by weight of urethane acrylate, 20 parts by weight of 2-phenylethyl methacrylate, 10 parts by weight of benzyl methacrylate, 5 parts by weight of isobutyl methacrylate, 3 parts by weight of acrylate-1,6- Hexylene glycol ester and 2 parts by weight of BAPO-based photoinitiator. Thereafter, this photosensitive resin composition applied on the substrate layer is coated on the upper surface of the frame of the prism-shaped cylinder, and then the outer surface of t...

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Abstract

Disclosed is a multifunctional optical sheet for use in liquid crystal displays, which can exhibit appropriate hiding performance while realizing luminance equivalent to that of a conventional case in which a prism sheet is layered on a light diffusion member, thus reducing the number of sheets to be mounted in a backlight unit.

Description

technical field [0001] The invention relates to a multifunctional optical sheet for a liquid crystal display. Background technique [0002] With the development of modern industrial society towards the advanced information age, electronic displays as a medium for displaying and transmitting various information are becoming more and more important. In the past, bulky cathode ray tubes (Cathode Ray Tube, hereinafter referred to as "CRT") were widely used, but they faced considerable limitations in terms of the space required for installation, making it difficult to manufacture larger-sized CRTs. Therefore, CRTs are now being replaced by various flat panel displays, including liquid crystal displays (hereinafter referred to as "LCDs"), plasma displays (PDPs), field emission displays (FEDs), and organic electroluminescence displays. In particular, among these flat panel displays, LCD, which is a technology-intensive product produced by the combination of liquid crystal and semi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02B5/04G02F1/13357
CPCG02F1/133611G02B5/045G02B5/0242G02F2001/133607G02F1/133607G02B5/02G02B5/04G02F1/1335
Inventor 金京和金大植李孝诊
Owner KOLON IND INC
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