KR101856795B1 - Laser Pointing Display Device - Google Patents

Abstract

The present invention provides a laser pointing display device which is provided in front of a visual side surface of an image display apparatus and includes a transparent substrate on which a light luminous layer is formed. The laser pointer display device of the present invention can be installed when the laser pointer is pointed to the display to improve the visibility of the laser pointer, and can be detached and stored when not in use.

Description

[0001] The present invention relates to a laser pointing display device,

The present invention relates to a laser pointing display device, and more particularly, to a laser pointing display device having a laser pointing device including a photo-luminescence layer provided in front of a display so as to improve the visibility of the laser pointer when the laser pointer is pointed to a display Display device.

Conventionally, in a presentation such as a meeting or a presentation, it has been often done to project a data image on a screen or a wall using a projector. At this time, the presenter generally uses a laser pointer for projecting laser light at any place on the presentation image, and performs presentation while pointing to a screen or the like. In the case of the screen projection using the projector, there is a problem that the contrast is lowered or the image quality is deteriorated in the projected image.

On the other hand, in recent years, liquid crystal displays (LCDs) and plasma displays (PDPs) have been made larger than 70 inches in size, and it is now possible to display images directly on these displays themselves instead of projector projection . However, when the presentation is performed by direct display by the display, since the display is self-emission, the laser light projection by the laser pointer is not visible. In addition, when the display property of the display itself is improved, the reflectivity of the projected light of the laser pointer is also suppressed if the scattering property on the display surface is improved, so that the visibility of the laser pointer becomes poor.

Recently, as disclosed in Japanese Patent Application Laid-Open No. 2001-236181, there is also a possibility that the laser pointer may be used as a pointing device for performing screen display manipulation on a display, and the visibility becomes even more important.

Japanese Patent Application Laid-Open No. 2001-236181

SUMMARY OF THE INVENTION It is an object of the present invention to provide an optical luminescence layer provided in front of a display so as to improve the visibility of a laser pointer when the laser pointer is pointed to a display, And to provide a laser pointing display device including the laser pointer.

On the other hand, the present invention provides a laser pointing display device including a transparent substrate having a photo-luminescence layer formed thereon.

In one embodiment of the present invention, the laser pointing display device is a transparent film on which a luminous layer is formed,

In another embodiment of the present invention, the laser pointing display device is a roll screen formed by winding a transparent flexible film on which a luminous layer is formed, around a roller member.

In another embodiment of the present invention, the laser pointing display device is a transparent plate including a transparent film on which a photo-luminescence layer is formed and a transparent substrate on which the transparent film is adhered via an adhesive.

The laser pointing display device of the present invention is detachable to a display and includes a photo-luminescent layer to improve the visibility of the laser pointer when the laser pointer is pointed to the display. The laser pointer can be detached and stored .

1 to 3 are views showing embodiments of a laser pointing display device according to the present invention.

Hereinafter, the present invention will be described in more detail.

A laser pointing display device according to an embodiment of the present invention includes a transparent substrate on which a luminous layer is formed.

When the laser pointer is pointed to the display, the light is emitted by the light of the laser pointer to improve the visibility of the laser pointer. .

A laser pointing display device according to an embodiment of the present invention can be installed in front of a visual side surface of an image display device.

In one embodiment of the present invention, the above-mentioned optical luminescence layer can be formed by applying a composition for forming a luminous layer on a substrate.

The composition for forming a photo-luminescence layer of the present invention may include a photo-luminescent material, a light-transmitting resin, an initiator, and a solvent.

In the present invention, a photoluminescent material refers to a substance that is stimulated by light and emits light by itself.

The above-mentioned photo-luminescent material is not particularly limited, and examples thereof include a photo-luminescent pigment and a photo-luminescent dye. These may be used alone or in combination of two or more.

The above-mentioned phosphorescent phosphors include, for example, organic fluorescent pigments and inorganic fluorescent pigments. The luminous luminescent dyes include, for example, stilbene derivative dyes, imidazole derivative dyes, benzoimidazole dyes, coumarin inducing dyes, benzidine dyes, and benzazazole dyes. Specific examples of the coumarin derivative system dye include coumarin 7, coumarin 102, coumarin 152 and the like.

The above luminous luminescent pigment and dye may be used in the form of solid, liquid, powder or the like, preferably powder.

Examples of the optical luminescent powders include lanthanide complexes, organic phosphors, inorganic phosphors, and photoluminescence quantum dots, which may be used alone or in combination of two or more.

The lanthanide complex is a compound containing a lanthanide metal element. The lanthanide metal element is not particularly limited and may be, for example, europium, terbium, dysprosium, samarium, It can be europium. Examples of the europium complex include tris (dibenzoylmethane) mono (1,10-phenanthroline) europium III (hereinafter referred to as Eu (DBM) ₃ Phen), tris (dinaphthylmethane) (1, 10-phenanthroline) europium (hereinafter referred to as Eu (DNM) ₃ Phen), BaMgAl ₁₀ O ₁₇ : Eu, Mn, Sr ₁₀ (PO ₄ ) ₆ Cl ₂ : .

In one embodiment of the present invention, the photoluminance material is a polyaromatic hydrocarbon or a heterocyclic compound.

Specific examples of the polyaromatic hydrocarbons include naphthalene, anthracene, naphthacene, pentacene, perylene, terrylene, quaterrylene, phenanthrene, phenanthrene, pyrene, and the like, but are not limited thereto.

Specific examples of the heterocyclic compound include pyridine, quinoline, acridine, indole, tryptophan, carbazole, dibenzofuran, Dibenzothiophen, coumarin, xanthene, rhodamine, pyronine, fluoresein, eosin Y, erythrosine Y, Oxazine, and the like, but the present invention is not limited thereto.

The multi-aromatic hydrocarbon and heterocyclic compound is a compound wherein one or more hydrogen is replaced by a C ₁ -C ₅ alkyl group, a C ₂ -C ₆ alkenyl group, a C ₂ -C ₆ alkynyl group, a C ₃ -C ₁₀ cyclo An alkyl group, a C ₃ -C ₁₀ heterocycloalkyl group, a C ₃ -C ₁₀ heterocycloalkyloxy, a C ₁ -C ₅ haloalkyl group, a C ₁ -C ₅ alkoxy group, a C ₁ -C ₅ thioalkoxy group , Aryl group, acyl group, hydroxy, thio, halogen, amino, alkoxycarbonyl, carboxy, carbamoyl, cyano, nitro and the like.

In one embodiment of the present invention, the luminoluminescent material may be a coumarin derivative represented by the following general formula (1) or (2).

[Chemical Formula 1]

(2)

In the above formulas,

R ₁ is hydrogen, hydroxy or NR ₆ R ₇ ,

R ₂ is hydrogen, a C ₁ -C ₆ alkyl group, or a C ₁ -C ₅ haloalkyl group,

R ₃ is hydrogen, COOR ₈ , COR ₉ , or an aryl group,

R ₄ is hydrogen, a C ₁ -C ₆ alkyl group, or a C ₁ -C ₅ haloalkyl group,

R ₅ is hydrogen, a C ₁ -C ₆ alkyl group, a C ₁ -C ₅ haloalkyl group, a COOR ₈ , a COR ₉ , or an aryl group,

R ₆ , R ₇ , R ₈ , and R ₉ are each independently hydrogen or a C ₁ -C ₆ alkyl group.

In another embodiment of the present invention, the luminoluminescent material may be a benzozazol derivative of formula (3), (4) or (5).

(3)

 [Chemical Formula 4]

[Chemical Formula 5]

In the above formulas,

R ₁ is hydrogen or a C ₁ -C ₆ alkyl group,

R ₂ is hydrogen, a C ₁ -C ₆ alkyl group, a C ₃ -C ₁₀ heterocycloalkyl group, an aryl group, CONHNHCOOR ₇ or COR ₇ ,

R ₃ and R ₄ are each independently hydrogen, a C ₁ -C ₆ alkyl group or an aryl group,

L is an aryl group or a C ₁ -C ₆ alkyl group,

R ₅ is hydrogen or a C ₁ -C ₆ alkyl group,

R < ₆ > is hydrogen or PO (OR < ₈ &_gt;) ₂ ,

X is oxygen, nitrogen or sulfur,

R ₇ and R ₈ are each independently hydrogen, a C ₁ -C ₆ alkyl group or an aryl group.

As used herein, the C ₁ -C ₆ alkyl group means a linear or branched hydrocarbon group having 1 to 6 carbon atoms, for example, methyl, ethyl, n-propyl, i-propyl, Butyl, t-butyl, n-pentyl, n-hexyl, and the like.

The C ₃ -C ₁₀ heterocycloalkyl group used in the present specification means a functional group in which at least one of ring carbon of a simple or fused ring hydrocarbon having 3 to 10 carbon atoms is substituted with oxygen, sulfur or nitrogen, Thiazolidinyl, oxiranyl, and the like, but are not limited thereto.

As used herein, a C ₁ -C ₅ haloalkyl group means a straight or branched hydrocarbon of 1 to 5 carbon atoms substituted with at least one halogen selected from the group consisting of fluorine, chlorine, bromine and iodine, But are not limited to, trifluoromethyl, trichloromethyl, and the like.

As used herein, an aryl group includes both an aromatic group and a heteroaromatic group and a partially reduced derivative thereof. The arometric group is a simple or fused ring group of 5 to 15-ary, and the heteroaromatic group means an arometric group containing at least one of oxygen, sulfur or nitrogen. Representative aryl groups include, but are not limited to, benzimidazolyl, benzoxazoyl, benzothiazolyl, naphthalene, stilbene, thiophene, pyridine, coumarin, and the like.

Alkyl groups of the C ₁ -C ₆ alkyl, C ₃ -C ₁₀ heterocycloalkyl group, C ₁ -C ₅ haloalkyl group, and aryl group are one or more C ₁ -C ₅ hydrogen of the a, C ₂ -C ₆ A C ₃ -C ₁₀ cycloalkyl group, a C ₃ -C ₁₀ heterocycloalkyl group, a C ₃ -C ₁₀ heterocycloalkyloxy group, a C ₁ -C ₅ haloalkyl group, a C ₂ -C ₆ alkynyl group, a C ₃ -C ₁₀ cycloalkyl group, a C ₃ -C ₁₀ heterocycloalkyl group, alkyl group, C ₁ -C ₅ alkoxy group, C ₁ -C ₅ alkoxy group, aryl group, acyl, hydroxy, thio (thio), halogen, amino, alkoxycarbonyl, carboxy, carbamoyl, cyano , Nitro, and the like.

The maximum excitation wavelength of the optical luminescence material is related to the wavelength of the laser light of the laser pointer and is preferably 100 nm to 450 nm. If the wavelength of the light is less than 100 nm, it is a light source of the X-ray region. Therefore, when the light source is exposed to a human body, there is a harmful problem to the human body. If it exceeds 450 nm, the light source is a visible light region, The visibility may be lowered.

In this specification, the maximum excitation wavelength means the wavelength of the excitation light having the highest fluorescence intensity in the fluorescence spectrum measured while changing the wavelength of the excitation light.

The content of the above luminous luminescent material is not particularly limited and may be, for example, 0.01 to 90 parts by weight, preferably 0.03 to 50 parts by weight per 100 parts by weight of the total composition for forming a luminous layer, . When the content of the luminoluminescent material is 0.01 to 90 parts by weight, a sufficient optical luminescence effect can be obtained, and other components can be contained in an appropriate amount to maintain the desired hardness.

The light transmitting resin may be a photocurable resin, and the photocurable resin may include a photocurable (meth) acrylate oligomer and / or a monomer.

As the photocurable (meth) acrylate oligomer, for example, epoxy (meth) acrylate, urethane (meth) acrylate and the like can be used, and urethane (meth) acrylate is preferable.

The urethane (meth) acrylate can be prepared by reacting a polyfunctional (meth) acrylate having a hydroxyl group in the molecule with a compound having an isocyanate group in the presence of a catalyst. Specific examples of the (meth) acrylate having a hydroxyl group in the molecule include 2-hydroxyethyl (meth) acrylate, 2-hydroxyisopropyl (meth) acrylate, 4-hydroxybutyl Caprolactone ring-opening hydroxyacrylate, pentaerythritol tri / tetra (meth) acrylate mixture, dipentaerythritol penta / hexa (meth) acrylate mixture, etc. These may be used singly or in combination of two or more. Specific examples of the compound having an isocyanate group include 1,4-diisocyanatobutane, 1,6-diisocyanatohexane, 1,8-diisocyanatooctane, 1,12-diisocyanatododecane, Diisocyanato-2-methylpentane, trimethyl-1,6-diisocyanatohexane, 1,3-bis (isocyanatomethyl) cyclohexane, trans-1,4-cyclohexane diisocyanate, Diisocyanate, toluene-2,6-diisocyanate, xylene-1,4-diisocyanate, tetramethyl xylene-1, Diisocyanate, 1-chloromethyl-2,4-diisocyanate, 4,4'-methylenebis (2,6-dimethylphenyl isocyanate), 4,4'-oxybis (phenylisocyanate), hexamethylene diisocyanate , Trifunctional isocyanate derived from trimethylene propanol adduct, toluene diisocyanate It may be made of carbonate and the like, which may be used either alone or in mixture of two or more.

The monomer is not particularly limited and, for example, a monomer having an unsaturated group such as a (meth) acryloyl group, a vinyl group, a styryl group, and an allyl group in the molecule as a photo-curable functional group can be used, and a (meth) acryloyl group Is preferred.

Specific examples of the monomer having a (meth) acryloyl group include neopentyl glycol acrylate, 1,6-hexanediol (meth) acrylate, propylene glycol di (meth) acrylate, triethylene glycol di Acrylate, trimethylolpropane tri (meth) acrylate, trimethylol ethane tri (meth) acrylate, triethylene glycol di (meth) acrylate, dipropylene glycol di (Meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol tri (meth) acrylate, Acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (metha) (Meth) acrylate, tripentaerythritol hexa tri (meth) acrylate, bis (2-hydroxyethyl) isocyanurate di (meth) acrylate, hydroxyethyl (Meth) acrylate, stearyl (meth) acrylate, tetrahydroperfuryl (meth) acrylate, isobutyl (meth) acrylate, Acrylate, phenoxyethyl (meth) acrylate, isobonol (meth) acrylate, etc. These may be used alone or in combination of two or more.

The above-mentioned photocurable (meth) acrylate oligomers and monomers may be used alone or in combination of two or more.

The light transmitting resin is not particularly limited, but may be included in an amount of 1 to 80 parts by weight based on 100 parts by weight of the entire composition for forming a luminous layer. If the content of the light-transmitting resin is less than 1 part by weight, it is difficult to achieve sufficient hardness improvement, and if it exceeds 80 parts by weight, curling becomes serious.

The initiator can be used without limitation in the art. Specific examples of the initiator include 2-methyl-1- [4- (methylthio) phenyl] 2-morpholinepropanone-1, diphenylketone benzyldimethylketal, 2-hydroxy- 4-hydroxycyclophenyl ketone, dimethoxy-2-phenylacetophenone, anthraquinone, fluorene, triphenylamine, carbazole, 3-methylacetophenone, 4-dimethoxyacetophenone, 4,4-diaminobenzophenone, 1-hydroxycyclohexylphenylketone, benzophenone, etc. These may be used alone or in admixture of two or more.

The initiator may be used in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the total composition for forming a luminous layer. If the content of the initiator is less than 0.1 parts by weight, the curing rate is slow. If the content of the initiator is more than 10 parts by weight, cracking may occur due to overaging.

The solvent may be any of those used in the art. Specifically, the solvent may be at least one selected from the group consisting of alcohol (methanol, ethanol, isopropanol, butanol, methylcellulose, ethylsorbose and the like), acetate (ethyl acetate, propyl acetate, butyl acetate, methyl cellosolve acetate, Propylene glycol monomethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate, methoxypentyl acetate), ketone type (methyl ethyl ketone, methyl butyl ketone, methyl isobutyl ketone , Hexane (heptane, heptane, octane etc.), benzene (benzene, toluene, xylene, etc.) and the like can be used. The solvents exemplified above may be used alone or in combination of two or more.

The content of the solvent is not particularly limited, but may be 10 to 95 parts by weight based on 100 parts by weight of the entire composition for forming a photoluminescence layer. If the amount of the solvent is less than 10 parts by weight based on the above criteria, the viscosity is high and the workability is poor. If the amount of the solvent is more than 95 parts by weight, the curing process takes a long time.

The composition for forming a luminous luminescent layer according to the present invention may contain, in addition to the above components, additives such as a curing agent, a leveling agent, an adhesion promoter, and an antioxidant commonly used in the art; Strength reinforcing nanosilica, inorganic nanoparticles and force (polyhedral oligomeric silsesquioxane); Antistatic conductive polymers, nanoparticles and ionic liquids; Organic particles for imparting a dispersibility, inorganic particles, and the like.

In one embodiment of the present invention, the substrate is not particularly limited as long as it is transparent and allows the user to view the display well, and the material used in the art can be used without any particular limitation. For example, glass, an acrylic panel, polyethersulphone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN) But are not limited to, polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate (PC), cellulose triacetate (TAC) Cellulose acetate propionate (CAP) and the like can be used.

The composition for forming a photo-luminescence layer according to the present invention can be applied on a substrate and cured to form a photo-luminescent layer, which can be subjected to a drying step as needed before curing.

The coating method is not particularly limited and may be a method commonly used in the art, and examples thereof include a fountain coating method, a die coating method, a spin coating method, a spray coating method, a gravure coating method, Coating method and the like.

The drying method is not particularly limited, and examples thereof include natural drying, hot air drying, heat drying and the like.

The curing method is not particularly limited, and examples thereof include ultraviolet curing and ionizing radiation curing. Various active energies can be used as the means, and ultraviolet rays are more preferably used. As the energy source, for example, a high pressure mercury lamp, a halogen lamp, a xenon lamp, a metal halide lamp, a nitrogen laser, an electron beam accelerator, a radioactive element and the like are preferable. The irradiation dose of the energy source is preferably 50 to 5000 mJ / cm < 2 > as the total exposure dose in the ultraviolet ray A region. If the irradiation amount is 50 mJ / cm 2 or more, the curing becomes more sufficient and the hardness of the formed photoluminescent layer becomes more sufficient. Further, if it is 5000 mJ / cm < 2 > or less, coloring of the formed luminous layer can be prevented, and transparency can be improved.

Hereinafter, embodiments of a laser pointing display device according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 are views showing embodiments of a laser pointing display device according to the present invention.

Referring to FIG. 1, a laser pointing display device according to an embodiment of the present invention is a transparent film 100 having a light-luminous layer formed thereon,

The transparent film 100 may be attached to or detached from the viewer's side surface of the image display apparatus 200 in front of the viewer's side surface of the image display apparatus 200 so as to view the laser pointing irradiated from the front side.

2, a laser pointing display device according to another embodiment of the present invention includes a roll screen 310 formed by winding a transparent flexible film 320 on which a luminous layer is formed, around a roller member 310 )to be,

The roller member 310 is disposed on an upper portion in front of the viewer's side of the image display apparatus 200 and the transparent flexible film 320 having the optical luminescence layer formed thereon The front surface of the display device 200 may be covered so as to cover the front surface of the display device 200 so that the laser pointer pointing to the front of the display device 200 may be visible or may be installed above the visual surface of the image display device 200.

3, a laser pointing display device according to another embodiment of the present invention includes a transparent film 410 on which a luminous layer is formed, and a transparent substrate 430 on which the transparent film is adhered through the adhesive 420 (Not shown).

The transparent plate 400 is provided to be spaced apart from the viewer's side surface of the image display device in front of the viewer's side surface of the image display apparatus 200 and may be installed using various fixing means such as an adhesive, a tape, a hook, .

Hereinafter, the present invention will be described in more detail with reference to Examples and Experimental Examples. It should be apparent to those skilled in the art that these examples and experiments are for illustrative purpose only and that the scope of the present invention is not limited thereto.

Production Example 1: Preparation of composition for forming a photoluminescence layer

14 parts by weight of pentaerythritol triacrylate, 14 parts by weight of urethane acrylate (SC2153), and 2 parts by weight of 3 um amorphous silica. 0.5 parts by weight of a luminous luminescent material (Eu (DBM) ₃ Phen), 33.5 parts by weight of ethyl acetate, 33.5 parts by weight of butyl acetate, 2 parts by weight of a photoinitiator (1-hydroxycyclohexylphenylketone) and a leveling agent (BYK3530) 0.5 Were mixed using a stirrer, and filtered using a PP-made filter to prepare a composition for forming a luminous layer.

Production Example 2: Preparation of composition for forming a photoluminescence layer

A composition for forming a photoluminescence layer was prepared in the same manner as in Production Example 1, except that coumarin 152 was used as the luminoluminescent material.

Production Example 3: Preparation of composition for forming a luminous luminescent layer

A composition for forming a luminous layer was prepared in the same manner as in Preparation Example 1, except that 7-amino-4-methylcoumarin was used as the luminoluminescent material.

Preparation Example 4: Preparation of composition for forming a photoluminescence layer

A composition for forming a luminous layer was prepared in the same manner as in Preparation Example 1, except that 1,4-bis (2-benzazaloryl) naphthalene was used as the luminoluminescent material.

Example 1-4: Preparation of transparent film

The composition for forming a luminous layer formed in Production Examples 1 to 4 was coated on a triacetylcellulose film having a thickness of 40 μm and dried at 70 ° C for 2 minutes. The dried film was irradiated with ultraviolet rays at an integrated light quantity of 400 mJ / cm ² to form a luminous layer to prepare a transparent film.

Example 5-8: Preparation of roll screen

The transparent films obtained in Examples 1 to 4 were wound around roller members to produce roll screens.

Examples 9-12: Preparation of transparent plate

A pressure-sensitive adhesive (NCF) was applied to the glass substrate and the transparent films obtained in Examples 1 to 4 were bonded to produce a transparent plate.

Experimental Example 1: Evaluation of visibility of laser pointer

After installing the laser pointing indicator obtained in Examples 1 to 12 on the display, when the display is switched to the white mode and the 405 nm laser pointer is illuminated at 60 degrees from the display, the visibility of the laser pointer Respectively.

As a result, it was confirmed that the light of the laser pointer was perceived bright when the laser pointing display device obtained in Examples 1 to 12 was installed.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Do. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Accordingly, the actual scope of the invention is defined by the appended claims and their equivalents.

100, 410: Transparent film 200: Image display device
320: Transparent flexible film 310: Roller member
300: Roll screen 420: Adhesive
430: transparent substrate 400: transparent plate

Claims (7)

1. A laser pointing display device comprising a transparent film and a luminous luminescent layer formed on the transparent film, wherein the luminous luminescent layer comprises a photoluminance layer comprising a photoluminance material, a light-transmitting resin, an initiator and a solvent, Wherein a maximum excitation wavelength of said luminous luminescent material is 100 nm to 450 nm. The laser pointing display device according to claim 1, wherein the laser pointing display device is installed in front of the visual side surface of the image display device. delete delete delete A laser pointing display device comprising: a transparent flexible film; a light luminous layer formed on the transparent flexible film; and a roller member provided to wind a transparent flexible film on which the light luminous layer is formed, Wherein the tin layer is formed using a composition for forming a photo-luminescent layer including a photo-luminescent material, a translucent resin, an initiator, and a solvent, wherein the photo-luminescent material has a laser pointing display having a maximum excitation wavelength of 100 nm to 450 nm device. 1. A laser pointing display device comprising: a transparent film; a transparent luminescent layer formed on the transparent luminescent layer; and a transparent substrate attached to the transparent luminescent layer through a pressure-sensitive adhesive, A laser pointing display device which is formed using a composition for forming a light luminescence layer including a light luminescent material, a light transmitting resin, an initiator and a solvent, wherein the maximum excitation wavelength of the luminescence material is 100 nm to 450 nm.

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