TWI567143B - Ink for Light Guide Plate, Light Guide Plate, Light Emission Unit and Liquid Crystal Display Device - Google Patents

Description

Ink for light guide plate, light guide plate, light emitting unit and liquid crystal display device

The invention relates to an ink for a light guide plate, a light guide plate, an illumination unit and a liquid crystal display device, in particular to an ink for a light guide plate, a light guide plate and a light-emitting unit which have better haze, transmittance and brightness. And a liquid crystal display device.

Referring to Figure 1, there is a conventional light guide plate 1. The light guide plate 1 includes a bottom surface 11 and a light exit surface 12 which are spaced apart from each other, a light incident surface 13 connected to the bottom surface 11 and the light exit surface 12 and capable of entering light, and a pattern disposed on the bottom surface 11 Layer 14. The pattern layer 14 has a plurality of dots 141 which are arranged by ink printing. The purpose of the dots 141 is to destroy the total reflection and to uniformly scatter the light from the light exit surface 12 to produce a uniform light output. The haze, the transmittance, and the luminance of the light guide plate 1 are affected by the material of the ink constituting the dots 141. In general, the higher the haze, the transmittance, and the luminance of the light guide plate 1, the better the quality of the light guide plate 1. At present, the existing inks have limited effects on the overall improvement of haze, penetration and brightness, and there is still room for improvement. Therefore, how to improve the haze, the transmittance and the brightness of the ink has become a subject that those skilled in the art are eager to break through.

A first object of the present invention is to provide an ink for a light guide plate, which can provide a light guide plate having better haze, transmittance, and brightness.

The ink for a light guide plate includes a (meth) acrylate resin, a solvent, and a filler. The filler contains organic particles and inorganic particles. The total weight of the organic particles and the inorganic particles is 100% by weight, the content of the organic particles is 82% by weight to 98% by weight, and the content of the inorganic particles is 2% by weight to 18% by weight.

In the specification and patent claims of the present invention, the term "(meth)acrylate" means "acrylate and/or methacrylate".

( methyl ) Acrylate resin

In the ink for a light guide plate of the present invention, the (meth)acrylate resin may be from 20 parts by weight to 100 parts by weight of the unsaturated carboxylic acid ester monomer, and from 0 part by weight to 40 parts by weight of the unsaturated carboxylic acid. (Anhydride) type monomer, and 0 parts by weight to 55 parts by weight of other copolymerizable monomers; preferably, from 25 parts by weight to 100 parts by weight of the unsaturated carboxylic acid ester monomer, 0 weight Parts to 35 parts by weight of an unsaturated carboxylic acid (anhydride) type monomer, and 0 parts by weight to 52 parts by weight of other copolymerizable monomers; more preferably, 29 parts by weight to 100 parts by weight A saturated carboxylic acid ester monomer, 0 parts by weight to 30 parts by weight of an unsaturated carboxylic acid (anhydride) type monomer, and 0 parts by weight to 50 parts by weight of another copolymerizable monomer are polymerized.

An unsaturated carboxylic acid ester type monomer, which is specifically, for example, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, isopropyl acrylate, Isopropyl methacrylate, n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, second butyl acrylate, second butyl methacrylate, third butyl acrylate , butyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxy acrylate Propyl ester, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, acrylic acid -4-hydroxybutyl ester, 4-hydroxybutyl methacrylate, allyl acrylate, allyl methacrylate, benzyl acrylate, benzyl methacrylate, phenyl acrylate, phenyl methacrylate , methoxytriethylene glycol acrylate, Methoxytriethylene glycol methacrylate, lauryl methacrylate, tetradecyl methacrylate, cetyl methacrylate Cetyl methacrylate), octadecyl methacrylate, eicosyl methacrylate, docosyl methacrylate, etc. Class; 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 3-aminopropyl acrylate, methacrylic acid - Unsaturated carboxylic acid aminoalkyl esters such as 3-aminopropyl ester; unsaturated carboxylic acid glycidyl esters such as glycidyl acrylate and glycidyl methacrylate.

The above unsaturated carboxylic acid ester type monomers may be used singly or in combination of plural kinds, and are methyl acrylate, methyl methacrylate, n-butyl acrylate, 2-hydroxyethyl acrylate, methacrylic acid-2- Hydroxyethyl ester, benzyl acrylate, and benzyl methacrylate are preferred.

An unsaturated carboxylic acid (anhydride) monomer, specifically, for example, acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, ethacrylic acid, cinnamic acid, maleic acid, maleic anhydride, fumaric acid, clothing An unsaturated carboxylic acid (anhydride) such as a citric acid, an itaconic anhydride, a citraconic acid or a citraconic anhydride.

The above unsaturated carboxylic acid (anhydride) monomers may be used singly or in combination of plural kinds, and acrylic acid or methacrylic acid is preferred.

Other copolymerizable monomers, such as: aromatic vinyl compounds such as styrene, α-methylstyrene, vinyl toluene, p-chlorostyrene, methoxystyrene, etc.; N-phenyl mala Imine, N-o-hydroxyphenylmaleimide, N-m-hydroxyphenylmaleimide, N-p-hydroxyphenylmaleimide, N-o-methylphenyl Maleidin, N-m-methylphenylmaleimide, N-p-methylphenylmaleimide, N-o-methoxyphenylmaleimide, N -m-methoxyphenylmaleimide, N-p-methoxyphenylmaleimide, N-cyclohexylmaleimine, and the like, maleic imine; vinyl acetate, Vinyl carboxylates such as vinyl propionate and vinyl butyrate; unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether, allyl epoxypropyl ether, and methallyl epoxypropyl ether a cyanide vinyl compound such as acrylonitrile, methacrylonitrile, α-chloroacrylonitrile or vinyl cyanide; acrylamide, methacrylamide, α-chloropropenylamine, N-hydroxyethyl propylene Insoluble guanamine such as guanamine or N-hydroxyethyl methacrylamide 1,3-butadiene, isoprene, allyl chloride, etc. aliphatic conjugated dienes.

The above other copolymerizable monomers may be used singly or in combination of plural kinds, and styrene or N-phenylmaleimide is preferred.

In the preparation of the (meth) acrylate-based resin, the unsaturated carboxylic acid ester monomer, the unsaturated carboxylic acid (anhydride) monomer, and the like may be used by various conventional mixers or dispersers. The copolymerizable monomer is uniformly mixed, and 0.01 to 3% by weight of a polymerization initiator is added and polymerized at a normal temperature, and an organic solvent may be used as needed. The polymerization initiator is specifically, for example, a peroxide such as benzamidine peroxide, azobisisobutyronitrile [2,2'-azobis (isobutyronitrile); AIBN for short), azobisisovaleronitrile [2] An azo compound such as 2'-azobis (methylbutyronitrile); abbreviated as AMBN].

The organic solvent used above is specifically, for example, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, diethylene glycol mono-n-propyl ether, diethylene glycol single n-Butyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, two (poly)alkylene glycol monoalkyl ethers such as propylene glycol mono-n-propyl ether, dipropylene glycol mono-n-butyl ether, tripropylene glycol monomethyl ether, tripropylene glycol monoethyl ether; ethylene glycol monomethyl ether (poly)alkylene glycol monoalkyl ether acetates such as acetate, ethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate; diethylene glycol II Other ethers such as methyl ether, diethylene glycol methyl ethyl ether, diethylene glycol diethyl ether, tetrahydrofuran; ketones such as methyl ethyl ketone, cyclohexanone, 2-heptanone, 3-heptanone; An alkyl lactate such as methyl 2-hydroxypropionate or ethyl 2-hydroxypropionate (ethyl lactate); methyl 2-hydroxy-2-methylpropionate, and 2-hydroxy-2-methylpropionic acid Ester, 3-methoxy Methyl ester, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl ethoxyacetate, ethyl hydroxyacetate, 2-hydroxy- Methyl 3-methylbutanoate, 3-methyl-3-methoxybutyl acetate, 3-methyl-3-methoxybutylpropionate, ethyl acetate, n-propyl acetate, acetic acid Isopropyl ester, n-butyl acetate, isobutyl acetate, n-amyl acetate, isoamyl acetate, n-butyl propionate, ethyl butyrate, n-propyl butyrate, isopropyl butyrate, butyric acid Other esters such as butyl ester, methyl pyruvate, ethyl pyruvate, n-propyl pyruvate, methyl acetate, ethyl acetate, ethyl 2-oxybutyrate; toluene, xylene, An aromatic or aliphatic hydrocarbon such as hexane, cyclohexane, trimethylbenzene or diisopropylbenzene; N-methylpyrrolidone, N,N-dimethylformamide, N,N-dimethylacetamidine Amines such as amines. The foregoing solvents may be used singly or in combination of plural kinds. Among them, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, diethylene glycol dimethyl ether, ethyl lactate, and ethyl 3-ethoxypropionate are preferred.

In the ink for a light guide plate of the present invention, the (meth) acrylate-based resin is, for example, a linear structure non-bridging polymer, and is solvent-soluble and can be dissolved in the organic solvent described above.

Solvent

In the ink for a light guide plate of the present invention, the type of the solvent is not particularly limited, and may be selected from organic solvents used in the polymerization process of the (meth)acrylate resin, and will not be described herein. Among them, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, diethylene glycol dimethyl ether, ethyl lactate, ethyl 3-ethoxypropionate, and cyclohexanone are also preferred. The solvent may be used singly or in combination of plural kinds.

Filler

In the ink for a light guide plate of the present invention, the filler acts as a light diffusing agent to sufficiently scatter and reflect light. The filler used in the present invention contains organic particles and inorganic particles.

The organic particles are selected from the group consisting of epoxy resins, melamine resins, urea resins, (meth)acrylate bridge resins, polyorganosiloxane chains resins, phenolic resins, polyamidene resins, and polyfluorenes. At least one of a group consisting of an amine resin, a polyester resin, and a Teflon resin. Preferably, the organic particles are (meth) acrylate bridging resins.

The (meth) acrylate bridging resin is, for example, a bridging polymer having a spherical structure, and is solvent-insoluble and can be dispersed in the prepared ink for a light guide plate.

The inorganic particles are selected from the group consisting of alumina, ceria, magnesia, iron oxide, titanium dioxide, zinc oxide, tin oxide, tantalum nitride, aluminum nitride, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, calcium citrate. At least one of the group consisting of aluminum silicate, zirconium silicate, and potassium titanate. Preferably, the inorganic particles are cerium oxide.

The total weight of the organic particles and the inorganic particles is 100% by weight, preferably, the content of the organic particles is from 84% by weight to 97% by weight, and the content of the inorganic particles is from 3% by weight to 16% by weight. More preferably, the content of the organic particles is from 85% by weight to 95% by weight, and the content of the inorganic particles is from 5% by weight to 15% by weight.

The average particle diameter of the organic particles and the inorganic particles is preferably from 1 μm to 10 μm, more preferably from 2 μm to 8 μm, most preferably from 4 μm to 5 μm.

The content of the (meth) acrylate-based resin, the solvent, and the filler is preferably 100 parts by weight, and the content of the (meth) acrylate-based resin is 30 parts by weight to 60 parts by weight. The content of the solvent is from 20 parts by weight to 50 parts by weight, and the filler is contained in an amount of from 7 parts by weight to 27 parts by weight. More preferably, the (meth) acrylate-based resin is contained in an amount of from 35 parts by weight to 60 parts by weight, the solvent is contained in an amount of from 20 parts by weight to 50 parts by weight, and the filler is contained in an amount of from 10 parts by weight to 25 parts by weight. . When the content of the filler is too small, the effect of light scattering and reflection cannot be achieved. When the content of the filler is too large, in addition to the dispersibility of the filler in the finished ink product, the excessive filler is also squeezed out to other components, and the adhesion of the finished dot product to the light guide plate is made. Not good.

In the ink for a light guide plate of the present invention, an additive such as a decane coupling agent, an antifoaming agent or a dispersing agent may be further selectively added.

The ink for the light guide plate of the present invention has the effect of adding organic particles and inorganic particles of a specific composition ratio, so that the light guide plate can simultaneously have better haze, transmittance and brightness.

A second object of the present invention is to provide a light guide plate including a bottom surface, a light exit surface spaced apart from the bottom surface, a light incident surface connected between the bottom surface and the light exit surface, and a pattern disposed on the bottom surface Floor. The pattern layer is mainly composed of the above-described ink for a light guide plate, and can scatter and reflect light.

A third object of the present invention is to provide a light emitting unit comprising a light guide plate and a light source. The light guide plate comprises a bottom surface, a light exit surface spaced apart from the bottom surface, a light incident surface connected between the bottom surface and the light exit surface, and a patterned layer disposed on the bottom surface. The pattern layer is mainly composed of the above-described ink for a light guide plate, and can scatter and reflect light. The illumination source provides light entering through the light incident surface.

A fourth object of the present invention is to provide a liquid crystal display device. The liquid crystal display device includes a liquid crystal panel, and a light emitting unit disposed on one side of the liquid crystal panel. The light unit includes a light guide plate and a light source. The light guide plate comprises a bottom surface, a light exit surface spaced apart from the bottom surface, a light incident surface connected between the bottom surface and the light exit surface, and a patterned layer disposed on the bottom surface. The pattern layer is mainly composed of the above-described ink for a light guide plate, and can scatter and reflect light. The illumination source provides light entering through the light incident surface.

Synthesis Example A1

One Synthesis Example A1 of the (meth) acrylate-based resin used in the present invention is 14 parts by weight of 2-hydroxyethyl methacrylate (hereinafter abbreviated as HEMA) and 40 parts by weight of methyl methacrylate ( Hereinafter, MMA), 20 parts by weight of n-butyl acrylate (hereinafter referred to as n-BA), 25 parts by weight of styrene (hereinafter abbreviated as SM), and 1 part by weight of azobisisoprene (hereinafter referred to as AMBN) are utilized. The star stirring device (model: ARB-310; manufactured by THINKY) was uniformly stirred, and subjected to thermal polymerization at 80 ° C. After 24 hours, the synthesis example A1 was obtained.

Synthesis Examples A2 to A6

Synthesis Examples A2 to A6 were synthesized in the same manner as in Synthesis Example A1 except that the types and amounts of monomers used for copolymerization in the respective synthesis examples were different. The types and amounts of monomers used for copolymerization in each of the synthesis examples are shown in Table 1.

"Embodiment 1"

In Example 1 of the ink for a light guide plate of the present invention, 50 parts by weight of a (meth) acrylate resin, 33 parts by weight of a solvent, and 17 parts by weight of a filler are used as a raw material. The filler contained 16.660 parts by weight of organic particles, and 0.340 parts by weight of inorganic particles. The total weight of the organic particles and the inorganic particles was 100% by weight, the content of the organic particles was 98% by weight, and the content of the inorganic particles was 2% by weight.

The (meth) acrylate type resin used was Synthesis Example A1. The organic solvent used was diethylene glycol dimethyl ether B1. The organic particles used were polymethyl methacrylate bridging resin particles C1. The inorganic particles used are ceria particles C2.

The above-mentioned raw materials were uniformly stirred by a star-shaped stirring device, and then kneaded for 3 hours in a three-roller machine (model: FC-90 mm, manufactured by Fans Co., Ltd.) to obtain Example 1.

Embodiments 2 to 9

Examples 2 to 9 are similar to the embodiment 1, except that the types and/or amounts of materials used in the respective examples differ. The types and amounts of materials used in the respective examples are shown in Table 2.

Comparative Examples 1 to 4

Comparative Examples 1 to 4 are similar to the Example 1, except that the types and/or amounts of materials used in the respective comparative examples are different. The types and amounts of materials used in the respective comparative examples are shown in Table 3.

Each of the examples and the comparative examples were tested as follows to evaluate the effects on the haze, the transmittance, and the luminance when applied to the light guide plate in each of the examples and the comparative examples:

Haze

Each of the examples and the comparative examples were applied to an acrylic plate of 10 cm × 10 cm × 3 mm to form a coating film having a film thickness of 50 μm, and dried at 80 ° C for 20 minutes, and then measured by haze (Nippon Electric Co., Ltd.) Industrial Co., Ltd., model: NDK 2000N) was measured and evaluated according to the following criteria: ○: haze > 90% ╳: haze ≦ 90%

Penetration rate

Each of the examples and the comparative examples were applied to an acrylic plate of 10 cm × 10 cm × 3 mm to form a coating film having a film thickness of 50 μm, and dried at 80 ° C for 20 minutes, and then measured by haze (Nippon Electric Co., Ltd.) Industrial Co., Ltd., model: NDK 2000N) was measured and evaluated according to the following criteria: ○: penetration rate > 88% △: 88% ≧ penetration rate > 80% ╳: penetration rate ≦ 80%

"Brightness"

Referring to Fig. 2, a 32-inch light guide plate 21 (material is a transparent PMMA resin having a thickness of 3 mm) and a light source 22 disposed beside the light guide plate 21 are prepared. The light guide plate 21 has a bottom surface 211, a light incident surface 212 adjacent to the light source 22, and a side surface 213 opposite to the light incident surface 212. The bottom surface 211 is connected between the light incident surface 212 and the side surface 213.

Then, using the screen printing machine (model PA3-F34; Miaoyinjing mechanism), each embodiment and each comparative example are placed on the bottom surface 211 of the light guide plate 21 from the light incident surface 212 to the side surface 213. The sequence prints a plurality of dots that are parallel to each other. The dots of each column are spaced apart from each other along a horizontal line. Each column has a total of 7 dots, and the dots are from the light incident surface 212 to the side surface 213, and the areas are 300 mm ² , 400 mm ² , 500 mm ² , 600 mm ² , 700 mm ² , 800 mm ^{2 ,} and 900 mm ^{2 , respectively} .

The light guide plate 21 printed with the dots is dried at 70 ° C for 30 minutes, and the light guide plate 21 is irradiated with the light source 22 (LED 9000K), and after 9 hours, 9 of the dots are selected ( D1 to D9), the luminance was measured using a luminance meter (model: BM-7A; manufactured by Topcon). The selected dot position is as shown in Fig. 2. The distance H between the center of each dot (D1 to D8) and the adjacent boundary is 20 mm. Measure the network points D1 to D9 separately, and obtain the corresponding luminance values L1 to L9. The calculation method of the average luminance (cd/m ² ) is = (L1+L2+L3+L4+L5+L6+L7+L8+ L9)/9. After calculating the average luminance, it is evaluated according to the following criteria: ○: average luminance > 3300 △: 3300 ≧ average luminance > 3000 ╳: average luminance ≦ 3000

Referring to Examples 1 to 9, it can be found that the total weight of the organic particles and the inorganic particles is 100% by weight, the content of the organic particles is from 82% by weight to 98% by weight, and the content of the inorganic particles is from 2% by weight to 18% by weight. In the case of %, the haze of each of the examples is above 90%, the penetration rate is above 88%, and the luminance is above 3000, and the effect is quite good. Further, if the content of the organic particles is from 87% by weight to 98% by weight, and the content of the inorganic particles is from 2% by weight to 13% by weight, the luminance can be further increased to 3300 or more, and the effect of improving the luminance is relatively good. In contrast, in Comparative Examples 1 to 4, when the ratio of the organic particles to the inorganic particles was out of the range defined in the present case, problems such as poor haze, transmittance, and luminance were observed.

In summary, the effect of the ink for the light guide plate of the present invention is that organic particles and inorganic particles of a specific composition ratio are added, so that the light guide plate can simultaneously have better haze, transmittance and brightness.

Referring to Figures 3 and 4, a liquid crystal display device 3 to which the ink for a light guide plate is applied is used. The liquid crystal display device 3 includes a liquid crystal panel 4, a light emitting unit 5 disposed on one side of the liquid crystal panel 4, and a top plate 61 respectively disposed at the upper and lower ends of the liquid crystal panel 4 and the light emitting unit 5, and a chassis 62.

The liquid crystal panel 4 includes a thin film transistor substrate 41, a color filter substrate 42 disposed on the thin film transistor substrate 41, a printed circuit board 43 spaced apart from the thin film transistor substrate 41, and a connection to The tape between the printed circuit board 43 and the thin film transistor substrate 41 carries the package 44.

The light-emitting unit 5 includes a light guide plate 51, a light source 52 disposed on one side of the light guide plate 51, a reflection sheet 53 disposed on the bottom side of the light guide plate 51, and a diffusion sheet disposed on the top side of the light guide plate 51. 54 and a cymbal 55 disposed on the diffuser 54.

The light guide plate 51 includes a bottom surface 511 and a light exit surface 512 opposite to each other, a light incident surface 513 connected between the bottom surface 511 and the light exit surface 512, and a side surface 514 opposite to the light incident surface 513, and A layer of pattern layer 515 is disposed on the bottom surface 511. The pattern layer 515 has a plurality of dots 516 printed with the ink for the light guide plate designed by the present invention. The light source 52 has a light emitting member 521 and a photomask 522 disposed outside the light emitting member 521. Since the light guide plate 51 can have a good haze, a transmittance, and a luminance, the light-emitting unit 5 and the liquid crystal display device 3 can also have better quality.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any simple equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the patent specification are still It is within the scope of the patent of the present invention.         <TABLE border="1" borderColor="#000000" width="_0002"><TBODY><tr><td> Table 1 </td><td> Monomer</td><td> Starting Agent< /td></tr><tr><td> Synthesis Example </td><td> MAA </td><td> AA </td><td> HEMA </td><td> MMA </td ><td> n-BA </td><td> BzMA </td><td> SM </td><td> AMBN </td></tr><tr><td> A1 </td> <td> </td><td> </td><td> 14 </td><td> 40 </td><td> 20 </td><td> </td><td> 25 < /td><td> 1 </td></tr><tr><td> A2 </td><td> 30 </td><td> </td><td> 4 </td>< Td> 25 </td><td> </td><td> </td><td> 40 </td><td> 1 </td></tr><tr><td> A3 </ Td><td> 1 </td><td> </td><td> </td><td> 60 </td><td> 8 </td><td> 30 </td><td > </td><td> 1 </td></tr><tr><td> A4 </td><td> </td><td> 5 </td><td> </td> <td> 44 </td><td> </td><td> </td><td> 50 </td><td> 1 </td></tr><tr><td> A5 < /td><td> </td><td> </td><td> 10 </td><td> 35 </td><td> 50 </td><td> 4 </td>< Td> </td><td> 1 </td></tr><tr><td> A6 </td><td> 2 </td><td> </td><td> 12 </ Td><td> </td><td> 60 </td><td> </td><td> 25 </td><td> 1 < /td></tr><tr><td> MAA Methacrylic acid methacrylic acid </td></tr><tr><td> AA Acrylic Acid </td></tr><tr><td > HEMA 2-hydroxyethyl methacrylate </td></tr><tr><td> MMA methyl methacrylate </td></tr><tr><td> n-BA n-butyl acrylate n-butyl acrylate </td></tr><tr><td> BzMA benzyl methacrylate benzyl methacrylate </td></tr><tr><td> SM benzene Ethylene styrene </td></tr><tr><td> AMBN azobisisovaleronitrile 2,2'-azobis(methylbutyronitrile) </td></tr></TBODY></TABLE><TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr ><td> Table 2 </td><td> Example 1 </td><td> Example 2 </td><td> Example 3 </td><td> Example 4 </td> <td> Example 5 </td></tr><tr><td> Ester resin (meth)acrylic acid</td><td> A1 </td><td> parts by weight </td>< Td> 50 </td><td> 50 </td><td> </td><td> </td><td> </td></tr><tr><td> A2 </td ><td> Weights</td><td> </td><td> </td><td> 50 </td><td> </td><td> </td></tr> <tr><td> A3 </td><td> parts by weight</td><td> </td><td> </td><td> </td><td> 50 </td>< Td> </td></tr><tr><td> A4 </td><td> parts by weight</td><td> </td><td> </td><td> </td ><td> </td><td> 55 </td></tr><tr><td> A5 </td><td> parts by weight</td><td> </td><td> </td><td> </td><td> </td><td> </td></tr><tr><td> A6 </td><td> parts by weight </td>< Td> </td><td> </td><td> </td><td> </td><td> </td></tr><tr><td> solvent</td>< Td> B1 </td><td> parts by weight</td> <td> 33 </td><td> </td><td> </td><td> </td><td> 28 </td></tr><tr><td> B2 </ Td><td> parts by weight</td><td> </td><td> 33 </td><td> </td><td> </td><td> </td></tr ><tr><td> B3 </td><td> parts by weight</td><td> </td><td> </td><td> </td><td> 33 </td> <td> </td></tr><tr><td> B4 </td><td> Weight </td><td> </td><td> </td><td> 33 < /td><td> </td><td> </td></tr><tr><td> Filler</td><td> C1 </td><td> Parts by Weight</td> <td> 16.660 </td><td> 16.150 </td><td> 15.555 </td><td> 15.300 </td><td> 14.790 </td></tr><tr><td> C2 </td><td> parts by weight</td><td> 0.340 </td><td> 0.850 </td><td> 1.445 </td><td> 1.700 </td><td> 2.210 </td></tr><tr><td> C1/C2 </td><td> weight% ratio</td><td> 98/2 </td><td> 95/5 </td ><td> 91.5/8.5 </td><td> 90/10 </td><td> 87/13 </td></tr><tr><td> Evaluation</td><td> Fog Degree (%) </td><td><b>○</b></td><td><b>○</b></td><td><b>○</b>< /td><td><b>○</b></td><td><b>○</b></td></tr><tr><td> Transmittance (%) < /td><td><b>○</b></td><td><b>○</b></td><td> <b>○</b></td><td><b>○</b></td><td><b>○</b></td></tr><tr>< Td> luminance</td><td><b>○</b></td><td><b>○</b></td><td><b>○</b></ Td><td><b>○</b></td><td><b>○</b></td></tr><tr><td> </td><td> Implementation Example 6 </td><td> Example 7 </td><td> Example 8 </td><td> Example 9 </td><td> </td></tr><tr> <td> ester resin (meth)acrylic acid</td><td> A1 </td><td> parts by weight </td><td> 40 </td><td> </td><td> 25 </td><td> </td><td> </td></tr><tr><td> A2 </td><td> parts by weight</td><td> </td> <td> </td><td> 25 </td><td> </td><td> </td></tr><tr><td> A3 </td><td> Weight < /td><td> </td><td> </td><td> </td><td> </td><td> </td></tr><tr><td> A4 < /td><td> Weights</td><td> </td><td> </td><td> </td><td> </td><td> </td></tr ><tr><td> A5 </td><td> parts by weight</td><td> </td><td> 50 </td><td> </td><td> </td> <td> </td></tr><tr><td> A6 </td><td> Weight </td><td> </td><td> </td><td> </ Td><td> 60 </td><td> </td></tr><tr><td> solvent</td d><td> B1 </td><td> parts by weight</td><td> 25 </td><td> </td><td> 25 </td><td> 20 </td> <td> </td></tr><tr><td> B2 </td><td> parts by weight</td><td> 25 </td><td> </td><td> < /td><td> </td><td> </td></tr><tr><td> B3 </td><td> parts by weight</td><td> </td><td > 33 </td><td> </td><td> </td><td> </td></tr><tr><td> B4 </td><td> parts by weight </td ><td> </td><td> </td><td> </td><td> </td><td> </td></tr><tr><td> Filler </ Td><td> C1 </td><td> parts by weight</td><td> 8.700 </td><td> 14.450 </td><td> 21.250 </td><td> 16.400 </td ><td> </td></tr><tr><td> C2 </td><td> Weight </td><td> 1.300 </td><td> 2.550 </td><td > 3.750 </td><td> 3.600 </td><td> </td></tr><tr><td> C1/C2 </td><td> % by weight </td><td > 87/13 </td><td> 85/15 </td><td> 85/15 </td><td> 82/18 </td><td> </td></tr>< Tr><td> Evaluation</td><td> Haze (%) </td><td><b>○</b></td><td><b>○</b></ Td><td><b>○</b></td><td><b>○</b></td><td> </td></tr><tr><td> wear Transmittance (%) </td><td><b>○</b></td><td><b >○</b></td><td><b>○</b></td><td><b>△</b></td><td> </td></tr ><tr><td> Brightness</td><td><b>○</b></td><td><b>△</b></td><td><b>△< /b></td><td><b>△</b></td><td> </td></tr></TBODY></TABLE><TABLE border="1" borderColor= "#000000" width="85%"><TBODY><tr><td> Table 3 </td><td> Comparative Example 1 </td><td> Comparative Example 2 </td><td> Comparison Example 3 </td><td> Comparative Example 4 </td><td> </td></tr><tr><td> Ester resin (meth)acrylic acid</td><td> A1 < /td><td> parts by weight</td><td> 50 </td><td> 50 </td><td> </td><td> </td><td> </td>< /tr><tr><td> A2 </td><td> Weight </td><td> </td><td> </td><td> 50 </td><td> </ Td><td> </td></tr><tr><td> A3 </td><td> parts by weight</td><td> </td><td> </td><td> </td><td> 50 </td><td> </td></tr><tr><td> A4 </td><td> parts by weight</td><td> </td> <td> </td><td> </td><td> </td><td> </td></tr><tr><td> A5 </td><td> parts by weight </td> Td><td> </td><td> </td><td> </td><td> </td><td> </td></tr><tr><td> A6 </ Td><td> parts by weight</td><td> </td><td> </td><td> </td><td> </td><td> </td></tr><tr><td> Solvent</td><td> B1 </td><td> Weight </td><td> 33 </td><td> </td><td> </td><td> </td><td> </td> </tr><tr><td> B2 </td><td> parts by weight</td><td> </td><td> 33 </td><td> </td><td> < /td><td> </td></tr><tr><td> B3 </td><td> parts by weight</td><td> </td><td> </td><td > </td><td> 33 </td><td> </td></tr><tr><td> B4 </td><td> parts by weight</td><td> </td ><td> </td><td> 33 </td><td> </td><td> </td></tr><tr><td> filler </td><td> C1 </td><td> parts by weight</td><td> 17.000 </td><td> 16.667 </td><td> 13.600 </td><td> 11.900 </td><td> </ Td></tr><tr><td> C2 </td><td> parts by weight</td><td> 0.000 </td><td> 0.333 </td><td> 3.400 </td> <td> 5.100 </td><td> </td></tr><tr><td> C1/C2 </td><td> Weight % Ratio</td><td> 100/0 </ Td><td> 98.06/1.94 </td><td> 80/20 </td><td> 70/30 </td><td> </td></tr><tr><td> Evaluation </td><td> Haze (%) </td><td><b>╳</b></td><td><b>╳</b></td><td>< b>○</b></td>< Td><b>○</b></td><td> </td></tr><tr><td> penetration rate (%) </td><td><b>○</ b></td><td><b>○</b></td><td><b>╳</b></td><td><b>╳</b></td ><td> </td></tr><tr><td> Brightness</td><td><b>╳</b></td><td><b>○</b>< /td><td><b>╳</b></td><td><b>╳</b></td><td> </td></tr><tr><td> B1 Diethylene glycol dimethyl ether </td></tr><tr><td> B2 Propylene glycol monomethyl ether </td></tr><tr><td > B3 3-Ethylpropionate Ethyl 3-ethoxypropionate </td></tr><tr><td> B4 Cyclohexanone </td></tr><tr><td> C1 Methyl methacrylate bridging resin particles (manufactured by GANZ, GS-0407, average particle size 4 μm) </td></tr><tr><td> C2 cerium oxide particles (made by Rhodia, SP-1702, average particle size) Trail 4μm) </td></tr></TBODY></TABLE>

1‧‧‧Light guide plate
11‧‧‧ bottom
12‧‧‧Glossy
13‧‧‧Into the glossy surface
14‧‧‧pattern layer
141‧‧‧ outlets
21‧‧‧Light guide
211‧‧‧ bottom
212‧‧‧Into the glossy surface
213‧‧‧ side
22‧‧‧Light source
3‧‧‧Liquid crystal display device
4‧‧‧LCD panel
41‧‧‧Film Optoelectronic Substrate
42‧‧‧Color filter substrate
43‧‧‧Printed circuit board
44‧‧‧Reel tape bearing package
5‧‧‧Lighting unit
51‧‧‧Light guide plate
511‧‧‧ bottom
512‧‧‧Glossy
513‧‧‧Into the glossy
514‧‧‧ side
515‧‧‧pattern layer
516‧‧‧ outlets
52‧‧‧Light source
521‧‧‧Lighting parts
522‧‧‧Photomask
53‧‧‧reflector
54‧‧‧Diffuser
55‧‧‧ Picture
61‧‧‧Top plate
62‧‧‧Chassis
D1~D9‧‧‧ outlets
H‧‧‧ distance

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a schematic view of a conventional light guide plate. FIG. 2 is a view for evaluating the ink for the light guide plate of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 3 is an exploded perspective view of a liquid crystal display device of the present invention; and FIG. 4 is a schematic structural view of a light emitting unit of the liquid crystal display device.

4‧‧‧LCD panel

5‧‧‧Lighting unit

51‧‧‧Light guide plate

511‧‧‧ bottom

512‧‧‧Glossy

513‧‧‧Into the glossy

514‧‧‧ side

515‧‧‧pattern layer

516‧‧‧ outlets

52‧‧‧Light source

521‧‧‧Lighting parts

522‧‧‧Photomask

53‧‧‧reflector

54‧‧‧Diffuser

55‧‧‧ Picture

Claims (13)

An ink for a light guide plate comprising: a (meth) acrylate resin; a solvent; and a filler comprising organic particles and inorganic particles, wherein the total weight of the organic particles and the inorganic particles is 100% by weight, the organic particles The content is from 82% by weight to 98% by weight, and the content of the inorganic particles is from 2% by weight to 18% by weight. The ink for a light guide plate according to claim 1, wherein the content of the organic particles is from 84% by weight to 97% by weight, and the content of the inorganic particles is from 3% by weight to 16% by weight. The ink for a light guide plate according to claim 1, wherein the content of the organic particles is from 85% by weight to 95% by weight, and the content of the inorganic particles is from 5% by weight to 15% by weight. The ink for a light guide plate according to claim 1, wherein the (meth) acrylate resin is contained in an amount of 100 parts by weight based on the total weight of the (meth) acrylate resin, the solvent and the filler. The content of the solvent is from 20 parts by weight to 50 parts by weight, and the filler is contained in an amount of from 7 parts by weight to 27 parts by weight, based on 30 parts by weight to 60 parts by weight. The ink for a light guide plate according to claim 1, wherein the organic particles have an average particle diameter of from 1 μm to 10 μm. The ink for a light guide plate according to claim 1, wherein the inorganic particles have an average particle diameter of from 1 μm to 10 μm. The ink for a light guide plate according to claim 1, wherein the organic particles are selected from the group consisting of epoxy resins, melamine resins, urea resins, (meth)acrylate bridge resins, and polyorganosiloxane resins. At least one of a group consisting of a phenolic resin, a polyimide resin, a polyamide resin, a polyester resin, and a Teflon resin. The ink for a light guide plate according to claim 7, wherein the organic particles are (meth) acrylate bridging resins. The ink for a light guide plate according to claim 1, wherein the inorganic particles are selected from the group consisting of alumina, ceria, magnesia, iron oxide, titanium oxide, zinc oxide, tin oxide, tantalum nitride, aluminum nitride, and sulfuric acid. At least one of the group consisting of strontium, magnesium sulfate, calcium carbonate, magnesium carbonate, calcium citrate, aluminum silicate, zirconium silicate, and potassium titanate. The ink for a light guide plate according to claim 9, wherein the inorganic particles are cerium oxide. A light guide plate comprising: a bottom surface; a light exiting surface spaced apart from the bottom surface; a light incident surface coupled between the bottom surface and the light exiting surface; and a patterned layer disposed on the bottom surface, mainly from claim 1 to The light guide plate according to any one of 10, wherein the light guide plate is configured to scatter and reflect light. A light-emitting unit comprises: a light guide plate comprising a bottom surface, a light-emitting surface spaced apart from the bottom surface, a light-incident surface connected between the bottom surface and the light-emitting surface, and a pattern layer disposed on the bottom surface, The pattern layer is mainly composed of the ink for a light guide plate according to any one of claims 1 to 10, and is capable of scattering and reflecting light; and a light source for supplying light from the light incident surface. A liquid crystal display device comprising: a liquid crystal panel; and a light emitting unit disposed on one side of the liquid crystal panel, and comprising a light guide plate and a light source, the light guide plate comprising a bottom surface and a light exiting the bottom surface a surface, a light-incident surface connected between the bottom surface and the light-emitting surface, and a pattern layer disposed on the bottom surface, the pattern layer being mainly composed of the ink for a light guide plate according to any one of claims 1 to 10, And light can be scattered and reflected, and the light source provides light to enter through the light incident surface.