KR20140022329A - Light guide sheet - Google Patents

Light guide sheet Download PDF

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Publication number
KR20140022329A
KR20140022329A KR1020120089262A KR20120089262A KR20140022329A KR 20140022329 A KR20140022329 A KR 20140022329A KR 1020120089262 A KR1020120089262 A KR 1020120089262A KR 20120089262 A KR20120089262 A KR 20120089262A KR 20140022329 A KR20140022329 A KR 20140022329A
Authority
KR
South Korea
Prior art keywords
light guide
guide plate
diffusion layer
sheet
diffusion
Prior art date
Application number
KR1020120089262A
Other languages
Korean (ko)
Inventor
김정호
Original Assignee
(주)케이앤씨엘이디
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)케이앤씨엘이디 filed Critical (주)케이앤씨엘이디
Priority to KR1020120089262A priority Critical patent/KR20140022329A/en
Publication of KR20140022329A publication Critical patent/KR20140022329A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/30—Fillers, e.g. particles, powders, beads, flakes, spheres, chips

Abstract

The main constitution of the present invention is to form a diffusion layer (2) comprising a diffusion bead and an adhesive on the substrate (1), the diffusion bead is a homopolymer of alkyl acrylate ester, alkyl methacrylate ester with acrylic beads and these And a copolymer resin of acrylonitrile, acrylamide, acrylate, and N-methylol (meth) acrylamide, wherein the diffusion layer 2 is formed on the release film 3. The diffusion layer 2 containing the diffusion beads and the pressure-sensitive adhesive is formed by printing in a dot shape or a surface, and the release film having the diffusion layer 2 formed thereon is transferred to the substrate 1 to form the diffusion layer 2. The release film 3 has a thickness of 5 micrometers to 200 micrometers, and the type of the release film 3 is transparent PET, white foil, ox foil, yellow foil ridge, ox glassine. , PE oxgrasin paper, white jade glassine paper, art paper, HY72, characterized in that any one of, the base material 1 is a transparent synthetic resin, an opaque synthetic resin, or a synthetic resin, silver reflection, gold reflection combined with a transparent synthetic resin and opaque synthetic resin The sheet or color sheet is made of any one selected to refract the light incident from the light source to the front, a transparent plate made of any one of a transparent or translucent material is formed on the diffusion layer 2, the bottom of the cover 6 the diffusion layer By the same printing method as in (2), it is formed of any one of a circular pattern, V-shaped pattern, planar face adhesion, and lattice pattern, and guides the light diffused through the diffusion layer 2 and the transparent sheet to the cover 6. And an adhesive layer 5 for adhering the diffusion layer 2 and the cover 6 to each other, and the diffusion layer 2 formed on the base material 1 It further comprises any one of a dye, a dye, a fluorescent material, formed by any one of a circular pattern, V-shaped pattern, lattice pattern, planar face adhesion by the printing method and gravure work, the light refracted from the substrate (1) Characterized in that it is configured to diffuse in the front

Description

Light guide plate and sheet for manufacturing light guide plate

The present invention relates to a light guide sheet for guiding light, and in particular, to form a diffusion layer and an adhesive layer in any one of a printing or dot adhesive method on a substrate, and is used for various devices and structures that help to reflect and guide light. It relates to a light guide plate manufacturing sheet made to be possible.

[Patent 1] Patent Application No. 10-2012-0005417 (January 17, 2012)

Name: "Light Reflector"

[Patent 2] Patent Application No. 11-0119868 (Nov. 16, 2011)

Name: "Lighting panel with LED"

The present invention relates to a light guide plate manufacturing sheet made to be used for the use of various devices and structures that help to reflect and guide light by forming a diffusion layer and an adhesive layer on a substrate by a printing method.

The main constitution of the present invention is to form a diffusion layer (2) comprising a diffusion bead and an adhesive on the substrate (1), the diffusion bead is a homopolymer of alkyl acrylate ester, alkyl methacrylate ester with acrylic beads and these And a copolymer resin of acrylonitrile, acrylamide, acrylate, and N-methylol (meth) acrylamide, wherein the diffusion layer 2 is formed on the release film 3. The diffusion layer 2 containing the diffusion beads and the pressure-sensitive adhesive is formed by printing in a dot shape or a surface, and the release film having the diffusion layer 2 formed thereon is transferred to the substrate 1 to form the diffusion layer 2. The release film 3 has a thickness of 5 micrometers to 200 micrometers, and the type of the release film 3 is transparent PET, white foil, ox foil, yellow foil ridge, ox glassine. , PE oxgrasin paper, white jade glassine paper, art paper, HY72, characterized in that any one of, the base material 1 is a transparent synthetic resin, an opaque synthetic resin, or a synthetic resin, silver reflection, gold reflection combined with a transparent synthetic resin and opaque synthetic resin The sheet and the color sheet are made of any one selected to refract light incident from the light source to the front. A platelet made of any one of a transparent or translucent material is formed on the diffusion layer 2, and a bottom of the cover 6 forms the diffusion layer ( By the same printing method as 2) is formed of any one of a circular pattern, V-shaped pattern, planar surface adhesion, lattice pattern, and guides the light diffused through the diffusion layer (2) and transparent plate to the cover (6) And an adhesive layer 5 for adhering between the diffusion layer 2 and the cover 6, wherein the diffusion layer 2 formed on the substrate 1 comprises a pigment, It further comprises any one of a fluorescent material, a fluorescent material, formed by any one of a circular pattern, V-shaped pattern, lattice pattern, planar face adhesion by a printing method and gravure work, to forward the light refracted from the substrate (1) Characterized in that configured to diffuse to

The light guide sheet is also applied to a lens type light guide plate. In another embodiment of the present invention, the substrate 1 is a lens type light guide plate, and the diffusion layer 2 is disposed on the upper surface of the light guide plate except for the groove 11 formed in the lens type light guide plate. ) Is formed, and on the surface of the lens-shaped light guide plate on the opposite side where the diffusion layer 2 is formed, acrylic PMMA. And a fabric sheet 12 made of any one of PC, glass, PVC, extrusion and injection molding. The surface of the lens light guide plate on the opposite side of the lens light guide plate on which the groove 3 is formed is a groove (3). ), The diffusion layer (2) formed on the lens light guide plate is made of any one of printing or forming a dot shape or a surface, and color the fabric sheet (12) installed on the lens light guide plate. Sheet, high brightness reflective sheet, diffuser, backlit, diffusion sheet, light diffusing PC, milky white PC, characterized in that it is composed of any one including a PP, housed in the groove 11 of the lens-shaped light guide plate that is the substrate (1) LED light source is installed so that the lens-shaped light guide plate and 0 ~ 500 mm intervals are installed

According to the present invention, since the diffusion layer 2 is formed on the substrate by a printing method consisting of a surface rather than a dot shape, the manufacturing is convenient and there is an advantage that there is no directivity.

In addition, it is convenient to handle, has a low facility cost in manufacturing light guide sheets, and has a low defect rate.

The light guide sheet according to the present invention has an effect of removing the moire phenomenon by giving a light diffusion effect and improving the illuminance and luminance.

1-5 illustrate various embodiments of forming the diffusion layer 2 on the substrate 1.

In the present invention, as shown in FIG. 1, the diffusion layer 2 including the diffusion beads and the pressure-sensitive adhesive is formed on the substrate 1 having a plate shape, and the diffusion beads 2 are alkyl acrylate esters and alkyl as acrylic beads. Beads composed of homopolymers of methacrylic acid esters and copolymer resins of these with acrylonitrile, acrylamide, acrylate and N-methylol (meth) acrylamide are used.

The pressure-sensitive adhesive is made of a known pressure-sensitive adhesive material such as transparent or translucent as a material to be attached to the base material 1, that is, to give the adhesiveness.

The diffusion layer 2 is formed by printing by a surface print printing method. The diffusion layer 2 may be formed by any one of a circular pattern, a V-shaped pattern, and a lattice pattern by a printing method.

The diffusion layer 2 can also be formed in a pattern of dots. In this case, printing is performed by adjusting the formation position and the spacing of the grooves to be formed on the surface of the printing roll during gravure printing. When grooves are densely formed on the surface of the printing roll, dots are densely formed on the surface of the substrate 1. Therefore, since a desired pattern and density are based on the pattern formed on the printing roll surface which consists of copper plates, grooves may be processed and formed in a printing roll in a desired pattern.

The printing material forming the diffusion layer 2 is made of a material in which a diffusion agent (diffusion bead) and an adhesive are mixed, so that the adhesion to the substrate 1 can be made good and stable.

The printing material may be a mixture of diffusion beads and pressure-sensitive adhesives, but in some cases, diffusion beads and pressure-sensitive adhesives may be used. In this case, after printing the diffusion beads, the pressure-sensitive adhesive layer is formed thereon by printing or the like. You may

In another embodiment of the present invention, as shown in FIG. 2, the diffusion layer 2 is formed by printing the diffusion layer 2 including the diffusion beads and the adhesive on the release film 3 in a dot shape or a surface. In addition, the release film having the diffusion layer 2 formed thereon may be transferred to the substrate 1 to form the diffusion layer 2.

It is preferable to use the release film 3 whose thickness is 5 micrometers-200 micrometers. If it is thinner than the thickness, damage occurs during use and fabrication, and if it is more than the thickness, it becomes unnecessarily thick, causing a cost increase and becoming heavy. The release film 3 may be formed of any one of transparent PET, baekbakji, jade foil, wangbakji, oxgrassine paper, PE oxgrassine paper, white jade glassine paper, art paper, HY72 or any other suitable material. I can use it

The substrate 1 is composed of any one selected from a transparent synthetic resin, an opaque synthetic resin, or a synthetic resin combined with a transparent synthetic resin and an opaque synthetic resin, a silver reflection, a gold reflection sheet, and a color sheet, so that the light incident from the light source is refracted forward. .

As another embodiment of the present invention as shown in Figure 3, on the diffusion layer 2, a cover 6 made of any one of a transparent or translucent material is formed, the same printing method as the diffusion layer 2 on the bottom of the cover 6 The adhesive layer 5 formed of any one of a surface adhesive or a circular pattern, a V-shaped pattern, or a lattice pattern is formed to be integrally attached to the diffusion layer 2.

In addition, the diffusion layer 2 formed on the substrate 1 further includes any one of a pigment, a dye, and a fluorescent material, and is formed by a circular pattern, a V-shape pattern, a lattice pattern, and a planar area by a printing method and a gravure operation. It is formed with any one of the phosphorus surface adhesion, and is configured to diffuse the light refracted from the substrate (1) to the front

4 and 5 will be described with an example where the diffusion layer 2 is also applied to a light guide plate having a concave lenticular groove.

The light guide sheet is also applied to a lens type light guide plate. In another embodiment of the present invention, as shown in FIG. 4, the substrate 1 is a lens type light guide plate having concave grooves 11 formed on both upper and lower surfaces thereof. The diffusion layer 2 is formed on the upper surface of the light guide plate except for the grooves 11 formed in the light guide plate.

The diffusion layer 2 formed on the lens light guide plate is made of any one formed by printing in a dot shape or a plane. In addition, as shown in FIG. 5, the surface of the lens light guide plate on the opposite side of the lens light guide plate on which the grooves 3 are formed may be configured as a plane without the grooves 3.

In addition, the present invention is an acrylic PMMA to the lens-type light guide plate surface on the opposite side where the diffusion layer (2) is formed. The fabric sheet 12 may be further formed of any one of PC, glass, PVC, extrusion, and injection molding. The fabric sheet 12 installed on the lens light guide plate may be formed of any one of, for example, a color sheet, a high brightness reflective sheet, a diffuser, a backlit, a diffusion sheet, a light diffusion PC, a milky white PC, and a PP.

For example, the reflective sheet transmits and reflects light. Reflective sheet uses commercially available products of LG, 3M company, for example. The reflective sheet is made of, for example, polyester material and is white or colored transparent or translucent material. Reflective sheet reflects the external light and transmits the light downward, reflects from the reflective sheet formed at the bottom and emits uniform brightness and illuminance by the configuration of (lens type) LGP.

An adhesive layer containing an adhesive may be formed between the reflective sheet and the substrate 1, which is a light guide plate, to be integrally mounted.

The LED light source 15 installed to be accommodated in the groove 11 of the lens-shaped light guide plate which is the substrate 1 is spaced from 0 to 500 mm with the lens-shaped light guide plate. In other words, they can be installed without gaps or at regular intervals. The light guide sheet has a distance of the light source 15 depending on the purpose of use or installation purpose, such as lightening or softening light according to the place of use. I can't.

According to the present invention as described above, it is possible to form the diffusion layer 2 on the substrate 1 by a printing method, the production is simple, the production cost is low, and the product quality is higher than that of the dot method diffusion layer (2) There is a uniform advantage

By using the light guide sheet according to the present invention, it can be widely used as a light guide sheet material applicable to various types of articles for guiding and reflecting light.

1 Base material 2 Diffusion layer
3 Release film 5 Adhesive layer
6 cover 11 groove
12 Fabric Sheet Transparent Plate (Added)

Claims (11)

Forming a diffusion layer (2) comprising a diffusion bead and an adhesive on the substrate (1), the diffusion bead is an acrylic bead homopolymer of alkyl acrylate ester, alkyl methacrylate ester and these and acrylonitrile, acrylamide , A bead consisting of any one of copolymer resin of acrylate, N-methylol (meth) acrylamide, The light guide plate manufacturing sheet characterized by the above-mentioned. The method of claim 1,
The diffusion layer 2 is formed by printing a diffusion layer 2 containing a diffusion bead and an adhesive on a release film 3 in a dot shape or a surface to form a release film on which the diffusion layer 2 is formed. To form a diffusion layer (2) by transferring the light guide plate 3. The method of claim 2,
The release film 3 is a light guide plate manufacturing sheet, characterized in that the thickness of 5 to 200 micrometers. 3. The method of claim 2,
The kind of the release film (3) is transparent PET, back foil ridge, ox foil, sulfur foil, ox glassine paper, PE ox glassine paper, white jade glass paper, art paper, HY72, sheet for manufacturing a light guide plate. The method of claim 1,
The substrate 1 is made of any one selected from a transparent synthetic resin, an opaque synthetic resin, or a synthetic resin combined with a transparent synthetic resin and an opaque synthetic resin, a silver reflection, a gold reflection sheet, a color sheet to refracted light incident from the light source to the front,
On the diffusion layer 2 is formed a transparent plate made of any one of a transparent or translucent material,
The bottom of the cover 6 is formed of any one of a circular pattern, a V-shape pattern, a planar surface adhesion, and a lattice pattern by the same printing method as the diffusion layer 2, and covers the light diffused through the diffusion layer 2. The light guide plate and sheet for manufacturing the light guide plate comprising a pressure-sensitive adhesive layer (5) which leads to (6) and adheres between the diffusion layer (2) and the cover (6). 6. The method according to any one of claims 1 to 5,
The diffusion layer 2 formed on the substrate 1 further includes any one of a pigment, a dye, and a fluorescent material, and a circular pattern, a V-shape pattern, a lattice pattern, and planar face adhesion by a printing method and a gravure work. It is formed of any one of the light guide plate manufacturing sheet, characterized in that configured to diffuse the light refracted from the substrate 1 to the front The method of claim 1,
The substrate 1 is a lens type light guide plate,
Light guide plate and sheet for manufacturing the light guide plate, characterized in that the diffusion layer 2 is formed on the upper surface of the light guide plate except the groove 11 formed in the lens-type light guide plate. The method of claim 7, wherein
On the opposite side of the lens-shaped light guide plate on which the diffusion layer 2 is formed, acrylic PMMA. PC, glass, PVC, extrusion and injection molding, CNC processing (V Cutting), LGP for printing, LGP for laser processing, LGP for adhesion / adhesion comprising a further formed sheet of fabric sheet 12 in the transparent and opaque sheet Light guide plate and sheet for manufacturing the light guide plate, characterized in that 9. The method according to claim 7 or 8,
A light guide plate, characterized in that the surface of the lens light guide plate on the opposite side of the lens light guide plate on which the groove (3) is formed is formed in a plane without the groove (3). The method of claim 7, wherein
The diffusion layer 2 formed on the lens light guide plate is made of any one of a dot shape or a printed surface.
Fabrication sheet and light guide plate, characterized in that the fabric sheet 12 installed on the lens light guide plate is composed of any one of a color sheet, high brightness reflective sheet, diffuser, backlit, diffusion sheet, light diffusion PC, milky white PC, PP. Dragon sheet The method according to any one of claims 7, 8 and 10,
The LED light source installed to be received in the groove 11 of the lens-shaped light guide plate which is the base material (1) is a light guide plate and a light guide plate manufacturing sheet, characterized in that installed in the interval from 0 to 500 mm with the lens-shaped light guide plate.
KR1020120089262A 2012-08-13 2012-08-13 Light guide sheet KR20140022329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120089262A KR20140022329A (en) 2012-08-13 2012-08-13 Light guide sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120089262A KR20140022329A (en) 2012-08-13 2012-08-13 Light guide sheet

Publications (1)

Publication Number Publication Date
KR20140022329A true KR20140022329A (en) 2014-02-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120089262A KR20140022329A (en) 2012-08-13 2012-08-13 Light guide sheet

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016021760A1 (en) * 2014-08-07 2016-02-11 주식회사스마트엘이디 Sheet assembly for light guide plate
US10591663B2 (en) 2016-04-15 2020-03-17 Lg Chem, Ltd. Light guide plate unit, backlight unit comprising same, and liquid crystal display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016021760A1 (en) * 2014-08-07 2016-02-11 주식회사스마트엘이디 Sheet assembly for light guide plate
US10591663B2 (en) 2016-04-15 2020-03-17 Lg Chem, Ltd. Light guide plate unit, backlight unit comprising same, and liquid crystal display device

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