KR20060077560A - High reflection screen - Google Patents

Abstract

A high reflective screen capable of obtaining high resolution and high luminance image quality regardless of ambient light source brightness is disclosed.

Such high reflective screens may include an optical acid layer in the form of a thermoplastic resin film coated with a glass bead or a thermoplastic resin film containing an optical powder;

A matting layer of a thermoplastic resin film or colored vinyl chloride sheet laminated with the optical acid layer and containing a matting agent;

A reflective layer laminated with the matting layer and in the form of a thermoplastic resin film on which aluminum is deposited;

And a backing layer which protects the backside of the reflective layer in the form of fibrous or thermoplastic film.

High reflective screen, high resolution, high brightness, light diffuser, quencher

Description

High Reflection Screen

1 is a highly reflective screen according to a first embodiment of the present invention.

2 is a highly reflective screen according to a second embodiment of the present invention.

3 is a highly reflective screen according to a third embodiment of the present invention.

4 is a highly reflective screen according to a fourth embodiment of the present invention.

The present invention relates to a high reflective screen, and more particularly, to a screen capable of obtaining high resolution and high brightness image quality regardless of ambient brightness.

In recent years, the video advertising market for promoting advertisement images or corporate images that create a unique atmosphere by emphasizing the image of sight, hearing, etc. is being activated.

In large discount stores, government offices, educational institutions, religious facilities, movie theaters, restaurants, etc., where places are frequently visited or closely related to eating habits, product advertisements and corporate image promotions are carried out using projection TV or LCD display boards. have.

 In general, a display by a projector requires a screen. In the case of a front projection screen, the image projected by the reflected light passes through the projected light from the projector, so that a clear picture quality is required in a brightly lit place. it's difficult.

Republic of Korea Utility Model Registration No. 0164933 "Reflective Screen" is a technology that can obtain a clear picture quality by configuring the light projected from the projector is scattered partly on the screen surface, partly transmitted and reflected from the reflective surface of the back surface and scattered again on the screen surface It discloses matters.

However, the technical matters disclosed in the above-mentioned registered utility model can obtain a satisfactory picture quality in a place where the surrounding brightness is low, but there is a limit in obtaining a clear and high resolution picture quality under bright light, and the image can be used only on one side of the screen. There is a disadvantage.

In addition, there is a problem that the screen surface is wrinkled when the screen is wound due to the difference in elongation of the support surface and the reflective surface to protect the reflective surface.

SUMMARY OF THE INVENTION An object of the present invention is to provide a high reflection screen capable of increasing the clarity of the image quality as described above, that is, degradation in the bright surrounding light.

It is another object of the present invention to provide such a highly reflective screen in which images can be formed independently on the front and back of the screen.

The present invention provides a highly reflective screen composed of a light diffusing layer, a quenching layer, a reflecting layer and a back layer in order to realize the above object.

The highly reflective screen of the present invention selectively uses the layers in accordance with the use environment or conditions of use.

For example, the reflective layer on which aluminum is deposited is laminated on one side of the back layer, and the front of the reflective layer may be a screen in which an optical acid layer formed by containing an optical acid is contained in the thermoplastic resin layer.

In addition, instead of the optical acid layer may be a high reflective screen consisting of a matting layer containing a matting agent in a polyethylene terephthalate film.

In addition, it may be a high reflective screen made by laminating a surface layer obtained by corona treatment on a polyethylene terephthalate film or coating a primer and then applying ethylene vinyl acetate resin on the surface of the matting layer.

Since the high reflective screen includes an optical diffuser or glass bead, a matting agent, or a color vinyl chloride sheet, light scattering and diffusing are excellent, so that the light reflected by the aluminum-deposited reflective layer can obtain high luminance regardless of the emission of external light. Can get clear and clear picture quality.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a side cross-sectional view of a high reflective screen according to a first embodiment of the present invention, in which a light diffusing layer 2, a reflecting layer 4 adhered to the light diffusing layer 2, and a back surface adhered to the reflecting layer 4 are shown. Layer (6).

The light diffusing layer 2 is formed of a thermoplastic resin, and an optical powder or glass beads is included for scattering and diffusing of light.

As the thermoplastic resin, polyethylene terephthalate, aromatic polypropylene, hard translucent polyvinyl chloride, or the like may be used.

Any one of these resins is mixed with one or more optical powders selected from a light diffusing agent calcium carbonate, calcium phosphite, or one or more optical powders, and made into a film.

The thickness of this film is in the range of 0.1 micrometer-1.0 micrometer. If the thickness of the film is made less than the above range, the elongation of the film is high, it can be increased by the tension when laminating. There is this.

On the contrary, if the thickness of the film is greater than or equal to the above range, wrinkles may occur during winding due to low flexibility of the film.

It is good to use the particle size of the said optical powder between 3 micrometers-30 micrometers, and the usage-amount of this optical powder is about 3 weight part-5 weight part with respect to the mixed weight of a thermoplastic resin and an optical powder.

When the amount of the optical powder is less than or equal to the range, light diffusion efficiency is lowered, so that a bright image is difficult to be expected.

When the film containing the light diffusing agent in the thermoplastic resin is used as the light diffusing layer, embossing is formed on the surface of the film to obtain an effect of improving light diffusion.

On the other hand, in the case where glass beads are used as the optical powder, particles having a particle size of 40 μm to 70 μm may be used as the high refractive beads having a refractive index of 1.9 to 2.2.

When the refractive index is 1.9 or less, the refractive index of the light is lowered, so that the scattering angle of the light is narrowed, so that there is a disadvantage in that the viewing angle is narrow in particular.

The glass beads may be used by coating an acrylic resin or a urethane resin and adhering the thermoplastic film, or coating a resin obtained by synthesizing an acrylic resin and a urethane resin on the film and adhering the glass beads thereon.

As the reflective layer 4 which is usually laminated by this method by the optical acid layer 2 and the adhesive, a film sheet of approximately 30 µm-100 µm is used.

The film sheet is made of polyethylene terephthalate as a main material, and aluminum can be used as a reflective layer by depositing aluminum having excellent reflection efficiency on the surface of the film. When the thickness of the film is too thin, wrinkles may occur when laminating, and when too thick, the flexibility of the polyethylene terephthalate film is further lowered, causing difficulty in winding up.

The back layer 6 is laminated to face the light diffusing layer 2 with the reflective layer 4 interposed therebetween to protect the back surface of the reflective layer 4 and to make the exterior look beautiful. .

In addition to such a function, the back layer 6 may be used to display another image, unlike the image displayed on the optical diffusion layer 2.

For such a function, the back layer 6 according to the present invention is made of polyester, polypropylene, polyethylene fiber or polyvinyl chloride, polyethylene, ethylene vinyl acetate, which is made of a sheet-like film.

The fiber material may be used in the form of a nonwoven fabric or a woven fabric and is used for the first function.

In addition, since the polyvinyl chloride film is used as the back layer of the thermoplastic resin for the second function, an image may be displayed by using another projector from the rear of the screen.

Fig. 2 is a schematic diagram of a high reflective screen according to a second embodiment of the present invention, in which the surface layer is not an optical diffuser layer, but the matting layer 8 is laminated in comparison with the high reflective screen of the first embodiment. different.

The matting layer 8 according to the present embodiment is provided to improve light scattering and prevent glare and to secure a viewing angle, and is made of a polyethylene terephthalate film containing a matting agent or made of a thermoplastic resin such as a color vinyl chloride sheet. .

The thickness of the film is preferably 30㎛-125㎛ in consideration of the light transmittance. In the case of a film thinner than this thickness, the light transmittance is 85% or more, which causes a disadvantage of diffusing too much light. When the film is thicker than the thickness range, the light transmittance is reduced to 70% or less, resulting in a diffuse reflection effect of light. Since it is dropped, it is difficult to display a clear image in a place where a high illuminance light source is installed.

The matting agent used in the present invention may be any one of fine powders selected from silica, calcium carbonate, titanium, barium sulfate, zinc oxide and aluminum hydroxide.

The particle size of this matting agent may be one having a particle size of 3 μm to 30 μm and an appropriate amount of 1 part by weight to 3 parts by weight is used.

When using the base material of the said matting layer 8 as a color vinyl chloride sheet layer, the usage-amount of a pigment is 0.1 weight part-0.5 weight part.

The color of the pigment is dark gray or light gray-based color to reduce the eye fatigue and is good to express a vivid Youngxiang.

If the pigment is used too much, the transmittance of light is worsened. On the contrary, when the pigment is used too much, the transmittance of light is increased, which adversely affects light scattering.

3 is a schematic view of a high reflective screen according to a third embodiment of the present invention, in which a reflective layer 4 is laminated on the back layer 6 and the glare of light is further applied to the surface of the matting layer 8 laminated to the reflective layer. Another matting layer 10 is shown laminated to reduce.

The matting layer 10 is made of polyethylene terephthalate, which is a thermoplastic resin, into a film, and the surface of the film is corona treated, coated with a primer, and then coated with ethylene vinyl acetate resin.

The corona treatment is for imparting polarity on the film, and the primer treatment is performed to increase the adhesion between the polyethylene terephthalate resin and the ethylene vinyl acetate resin.

Since the ethylene vinyl acetate resin is translucent, the matting effect can be expected as compared to other transparent materials, and the thickness of the resin is 10 µm-100 µm, so that the matting function is appropriate.

Fig. 4 is a schematic diagram of a high reflective screen according to a fourth embodiment of the present invention, in which the screen according to this embodiment is composed of an optical diffuser layer 2 and a matting layer which were used separately in the first and second embodiments. 8) is laminated together with the reflective layer 4 and the back layer 6.

In the above embodiment, when the back layer 6 is laminated with the reflective layer 4, when the sheath is cut out at an interval of about 3 cm to 10 cm at the back layer, no bending or the like occurs when the screen is rolled up. This case is suitable when the back layer 6 is made of fibrous nonwoven fabric or woven fabric.

Since the high reflective screen according to the first embodiment includes the optical diffusion layer and the reflective layer on which aluminum is deposited, a high resolution and high brightness screen can be realized, and the high reflective screen according to the second embodiment has the matting layer and aluminum deposited thereon. Including a reflective layer, it is possible to realize a screen with high resolution and excellent viewing angle.

In addition, since the high reflective screen according to the third embodiment includes a quenching layer coated with ethylene vinyl acetate resin, a quenching layer and a reflecting layer including a quencher, brightness may be slightly lower than that of the screen of other embodiments, but high resolution and viewing angle may be reduced. Excellent screen realization is possible.

In addition, the high reflective screen according to the fourth embodiment is a screen capable of expressing all of the above characteristics.

That is, in the high reflective screen according to the present embodiment, the image beam radiated from the projector is transmitted through the optical scattering layer and the quenching layer in turn, and is reflected by the reflecting layer, and is first scattered in the quenching layer, and is diffused secondly in the light diffusion layer. And high luminance can be obtained.

In the high reflective screen described above, any one of ethylene vinyl acetate resin, acrylic resin, polyester resin, and polyaryl urethane resin is used as the main material for bonding the reflective layer 4 and the matting layer 8, and isocyanate is used as a curing agent. After blending in a ratio of 100 to 12, the upper surface of the reflective layer 4 is coated and dried at 100 ° C-120 ° C. As for the compounding viscosity of the said compounding liquid, about 300 CPS-800 CPS are suitable. In this manner, the back layer 6 and the light diffusing layer 2 are also bonded.

In the high reflective screen of the present invention, one projector is used in the cross section, and since the reflective layer and the quenching layer or the optical scattering layer are deposited on aluminum, images of high resolution and high brightness are generated by light scattering and diffusion. It can be realized. This can display a clear and clear image regardless of the brightness of the indoor and outdoor light sources.

When using the back layer as a screen, two projectors are used. In particular, when embossing is performed on the surface, an image of higher resolution and higher luminance can be obtained by light scattering.                     

The highly reflective screen according to the embodiment can be used in various ways in combination with a roll screen, a motorized screen or a fixed screen.

Claims (11)

An optical acid layer in the form of a thermoplastic resin film coated with a glass fiber or a thermoplastic resin film coated with glass beads; A reflective layer laminated on the optical acid layer and formed of a thermoplastic resin film on which aluminum is deposited; A highly reflective screen comprising a backing layer that protects the backside of the reflective layer in the form of a fibrous or thermoplastic film. A matting layer on a thermoplastic resin film or colored vinyl chloride sheet containing a matting agent; A reflective layer laminated with the matting layer and in the form of a thermoplastic resin film on which aluminum is deposited; A highly reflective screen comprising a backing layer that protects the backside of the reflective layer in the form of a fibrous or thermoplastic film. A matting layer on a thermoplastic resin film or colored vinyl chloride sheet containing a matting agent; A reflective layer laminated with the matting layer and in the form of a thermoplastic resin film on which aluminum is deposited; A backing layer laminated with the reflective layer in the form of a fibrous or thermoplastic film to protect the backside; A high reflective screen comprising a thermoplastic resin film and another matting layer composed of an ethylene vinyl acetate resin applied on the film and laminated with the matting layer. An optical acid layer in the form of a thermoplastic resin film coated with a glass fiber or a thermoplastic resin film coated with glass beads; A matting layer of a thermoplastic resin film or colored vinyl chloride sheet laminated with the optical acid layer and containing a matting agent; A reflective layer laminated with the matting layer and in the form of a thermoplastic resin film on which aluminum is deposited; A highly reflective screen comprising a backing layer that protects the backside of the reflective layer in the form of a fibrous or thermoplastic film. The high reflecting screen according to claim 1 or 4, wherein the optical acid layer is any one of a polyethylene terephthalate film, a directional polypropylene film, and a rigid translucent polyvinyl chloride film. The highly reflective screen according to claim 1 or 4, wherein the optical acid layer is selected from calcium carbonate and calcium phosphite as the optical acid agent. 5. The highly reflective screen of claim 1 or 4, wherein the glass beads used in the optical diffuser layer have a refractive index of 1.9-2.2. The highly reflective screen according to any one of claims 2, 3 and 4, wherein the matting layer is made of a polyethylene terephthalate film containing a matting agent. The high reflecting screen according to any one of claims 2, 3 and 4, wherein the matting agent used in the matting layer is selected from fine powders of silica, calcium carbonate, titanium, barium sulfate, zinc oxide and aluminum hydroxide. The high reflecting screen of claim 1, wherein the backing layer is selected from polyester, polypropylene, polyethylene fibers. The high reflecting screen according to any one of claims 1 to 4, wherein the backing layer is made of fibrous woven or nonwoven fabric and has a sheath for preventing bending.

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