KR20130087325A

KR20130087325A - Screen for projection and display device comprising the same

Info

Publication number: KR20130087325A
Application number: KR1020120008609A
Authority: KR
Inventors: 박지원; 백종수
Original assignee: 엘지전자 주식회사; (주)이노웍스
Priority date: 2012-01-27
Filing date: 2012-01-27
Publication date: 2013-08-06

Abstract

The present invention can prevent thermal deformation, warpage and warping deformation due to temperature, humidity and other environmental factors, and has excellent physical properties such as high rigidity, smoothness, light weight, nonflammability and durability, and enables daytime viewing and installation space. The present invention relates to a projection screen and a display device including the same.

Description

Screen for projection and display device comprising the same

In general, a projector is a device that implements a large screen by projecting or reflecting illumination light onto a micro display panel and then magnifying and projecting the illumination light onto a screen.

Recently, the demand for large displays is increasing along with the home theater craze, and among these large display devices, the projector has an advantage of having an excellent aspect ratio.

If you are looking at the image in the direction in which the image is projected (left side of the screen in the drawing), it will be front projection. If you are looking in the opposite direction (right side of the screen in the drawing), rear projection will be used. do.

Although the front projection method has an advantage of saving space compared to the rear projection method, it is disadvantageous in that an image can be viewed only in a dark space, and the path in which light is projected in front of the screen must be empty so that the image is not blocked.

On the other hand, the projector of the front projection type is generally installed at a position away from the screen to some extent to secure the projection distance. If you install the projector away from the screen, you must maintain a dark space, secure the projection distance according to the screen size, and restrict the place of installation such as no obstructions to block light in the light path from the projector to the screen. This happens.

In addition, the large screen can be deformed due to temperature, humidity, and other environmental factors, such as thermal deformation, bending, warping phenomenon, once the deformation is difficult to recover, the best display according to the degree of bending depending on the surrounding environment Quality is difficult to implement

In addition, the commonly used screens are unfolded by the user directly pulling down the screen with the ceiling fixed, and in the case of a large screen, the user fixes the periphery of the screen to a polygonal frame using a spring.

As such, the conventional projection screen is difficult to install and move, easily deformable, and has a problem of having a predetermined display quality or higher only in a dark space.

An object of the present invention is to provide a projection screen capable of preventing thermal deformation, warpage, and distortion deformation caused by temperature, humidity, and other environmental factors, and a display device including the same.

In addition, an object of the present invention is to provide a projection screen having excellent physical properties such as high rigidity, smoothness, light weight, non-combustibility and durability, and a display device including the same.

In addition, the present invention is to solve the problem to provide a weekly viewing, projection screen that is not limited by the installation space and a display device including the same.

In addition, an object of the present invention is to provide an easy-to-assemble and install, projection screen having a beautiful appearance design and a display device including the same.

In order to solve the above problems, the projection screen according to an embodiment of the present invention is a film for reflecting the image output from the image projection apparatus and the film is attached to the front, formed of a metal material to have a plurality of voids It includes a support member.

In addition, the support member may be formed of aluminum.

In addition, the support member may be formed such that a plurality of voids have a honeycomb structure.

In addition, the film may be attached to the front surface of the support member through a lamination process.

In addition, the support member may be formed with a fluorine coating layer on the back.

In addition, the film may include a diffusion layer, a fresnel lens layer formed on one surface of the diffusion layer, a thin film deposition reflective layer formed on an inclined surface of the fresnel lens layer, and a color coating layer surrounding the thin film deposition reflective layer.

In addition, the thin film deposition reflective layer may be formed of aluminum.

In addition, the color coating layer may have a black color.

In addition, the projection screen may further include a mold mounted to the rim of the film and the support member.

In addition, the mold is formed of aluminum, the back of the mold and the support member may be fastened with a screw.

In addition, the projection screen may further include a bracket mounted to the rear of the support member for fixing the support member to the wall.

In addition, a plurality of insertion holes may be provided at a rear surface of the support member, and a plurality of protrusions inserted into the insertion hole may be provided at the bracket.

In addition, the bracket is provided with a rectangular slit, the bracket may be fixed to the wall by a fastening means penetrating the slit.

The slit extends in the circumferential direction having a predetermined curvature, and the inclination angle of the bracket may be adjusted according to a position inside the slit of the fastening means.

In addition, the display device according to an embodiment of the present invention is an image projection apparatus, a film for reflecting the image output from the image projection apparatus and the support member is attached to the front surface, the support member formed of a metal material to have a plurality of voids And a bracket mounted to a rear surface of the support member to fix the support member to a wall.

Here, the image projecting device projects an image toward the front of the film.

In addition, the support member may be formed of aluminum.

In addition, the film may include a diffusion layer, a fresnel lens layer formed on one surface of the diffusion layer, an aluminum thin film deposition reflective layer formed on an inclined surface of the fresnel lens layer, and a black color coating layer surrounding the aluminum thin film deposition reflective layer. can do.

As described above, the projection screen and the display device including the same according to an embodiment of the present invention can prevent thermal deformation, warpage, and distortion deformation caused by temperature, humidity, and other environmental factors.

In addition, the projection screen associated with an embodiment of the present invention and a display device including the same have excellent physical properties such as high rigidity, smoothness, light weight, nonflammability, and durability.

In addition, the projection screen associated with an embodiment of the present invention and a display device including the same can be viewed daytime, and is not limited by the installation space.

In addition, the projection screen and the display device including the same according to an embodiment of the present invention is easy to assemble and install, and has a beautiful appearance design.

1 is a conceptual diagram illustrating an operation state of a display apparatus according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the projection screen related to an embodiment of the present invention.
3 is a cross-sectional view of a state in which each member of FIG. 2 is coupled;
4 is a perspective view of a state in which a portion of the support member constituting the projection screen according to an embodiment of the present invention is cut away.
5 is a cross-sectional view of the film constituting the projection screen according to an embodiment of the present invention.
Figure 6 is a rear view of the projection screen associated with one embodiment of the present invention.
Figure 7 is an exploded perspective view for explaining one installation method of the projection screen related to an embodiment of the present invention.
8 is a conceptual diagram illustrating a method of manufacturing a projection screen related to an embodiment of the present invention.

Hereinafter, a projection screen according to an embodiment of the present invention and a display device including the same will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

On the other hand, terms including an ordinal number such as a first or a second may be used to describe various elements, but the constituent elements are not limited by the terms, and the terms may refer to a constituent element from another constituent element It is used only for the purpose of discrimination.

1 is a conceptual diagram illustrating an operating state of a display apparatus according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a projection screen according to an embodiment of the present invention, and FIG. 3 is a constituent member of FIG. 2. Is a cross-sectional view of the combined state, Figure 4 is a perspective view of a state in which a part of the support member constituting the projection screen according to an embodiment of the present invention is cut out.

In addition, Figure 5 is a cross-sectional view of the film constituting the projection screen according to an embodiment of the present invention, Figure 6 is a rear view of the projection screen related to an embodiment of the present invention, Figure 7 is one of the present invention 8 is an exploded perspective view illustrating a method of installing a projection screen according to an embodiment, and FIG. 8 is a conceptual view illustrating a method of manufacturing a projection screen according to an embodiment of the present invention.

1 and 2, the projection screen 10 according to an embodiment of the present invention includes a film 20 and a front surface of the film 20 for reflecting an image output from the image projector 1. It is attached to, and includes a support member 30 formed of a metal material to have a plurality of voids.

In this document, the image projection device 1 refers to a display device that allows an image generated by an image device or the like to be displayed on the projection screen 10 through a projection lens or the like.

Such an image projection apparatus 1 may include a CRT (Cathode Ray Tube) projection method, an LCD (LCD) liquid crystal display (LCD) projection method, and an LCOS (LCoS) liquid crystal on silicon (LCoS) projection method. Projection methods and DLP (DLP) projection methods.

Here, the CRT projection method is a method of projecting an image signal of an external device amplified in a CRT to a screen, also called a beam projector, and a CRT one tube and a CRT three tube type. have.

In addition, the LCD projection method uses the electro-optical properties of the liquid crystal in the display device. The light sources (red, green, and blue) from the lamps pass through the transmissive liquid crystal panel, and are then synthesized into a single image through a polarizing prism on the screen. This is a magnified projection.

In addition, the Elcos projection method uses a silicon wafer (LCoS) (reflective liquid crystal panel) chip in which a silicon wafer is used instead of a glass at the bottom of a conventional liquid crystal display (LCD) device and an electronic circuit is formed thereon. The light sources (red, green, and blue) are reflected off the surface of the Elcos chip, then synthesized into a single image through a polarizing prism and projected onto the screen.

In addition, the DLP projection method uses a DMD (Digital Mirror Device) chip developed by Texas Instruments (TI) of the United States, and the light generated from the lamp is reflected on the DM chip after passing through the color wheel. It is enlarged and projected.

However, the image projection apparatus 1 related to the display apparatus according to an exemplary embodiment of the present invention is not limited to the above-described projection method, and may include other projection image projection devices. As an aspect, referring to FIG. 1, the image projector 1 may be a projector having an ultra short focus of a front projection type.

In addition, the support member 30 may be formed of a metal material, and may have a plurality of voids 35 to increase rigidity and reduce weight. The support member 30 may have a shape corresponding to the shape of the film 20. When the film 20 has a rectangular shape, the support member 30 has a surface corresponding to the rectangle. It may have a cuboid shape.

In addition, the support member 30 may be formed of various metal materials having high strength, excellent smoothness, light weight, and excellent durability. In one embodiment, the support member 30 may be formed of aluminum. .

Referring to FIG. 4, the support member 30 may be formed such that each of the pores 35 has a honeycomb structure having a hexagonal shape, and the support member 30 may be referred to as an aluminum honeycomb. .

Due to the honeycomb structure as described above, even when the support member 30 supports the film 10 with a thin thickness of 100 inches or more, the voids and deformations due to environmental factors such as temperature and humidity do not occur and voids do not occur. 35 has the advantage of light weight.

In addition, the support member 30 may include a honeycomb core 31 having a void 35 and a front panel 32 and a rear panel 33 positioned at front and rear surfaces of the honeycomb core 31, respectively. The front panel 32, the honeycomb core 31, and the rear panel 33 may have a sandwich structure.

In addition, by varying the metal material and thickness constituting the front panel 32, the honeycomb core 31 and the rear panel 33 in a variety of ways, the rigidity and strength of the support member 30 can be freely adjusted, and honey The comb core 31 does not cause deformation of the external force.

The support member 30 has excellent dimensional stability due to the honeycomb structure and may have perfect smoothness regardless of the area to which the film 20 is attached. Even if the film 20 implements a large screen of 100 inches or more, there is no warpage. Accurate smoothness can be maintained.

In addition, the support member 30 may be formed of a honeycomb structure having a gas space of 97% or more, and is lightweight and thin due to the honeycomb structure. In one embodiment, the support member 30 may have a weight of 6 kg per meter, and in the case of a 100-inch screen, the final weight may be 10 kg or less.

In addition, since the support member 30 is made of aluminum, there is no risk of flame spreading, and thus, nonflammability is excellent, and durability is high, and stability to chemical damage is high, so that physical and chemical deformation does not occur even in an environment having various temperatures and pressures. Do not.

Meanwhile, when using the projection screen 10 for a long time, aluminum may react with oxygen in the air, and whitening may occur. In order to prevent the oxidation, the support member 30 may be disposed on the rear surface to prevent oxidation. A fluorine coating layer can be formed.

2 and 3, the projection screen 10 may further include a mold 40 mounted on an edge portion of the film 20 and the support member 30, and the mold ( 40 may include a first member 41 corresponding to an edge of the film 20, a second member 42 corresponding to side surfaces of the film 20, and the support member 30, and the support member 30. It may include a third member 43 corresponding to the rear edge portion of the).

The mold 40 surrounds the edges of the film 20 and the support member 30 to form a bezel area of the projection screen 10 and simultaneously cuts edges of the film 20 and the support member 30. Since it is not exposed to the outside, the appearance quality can be improved.

In addition, the mold 40 may have a bar shape and may be formed of aluminum. The back of the mold 40 and the support member 30 may be fastened with a screw (not shown). Specifically, the third member 43 and the back of the support member 30 of the mold 40 may be screwed. It can be fastened to.

In addition, the guide 40 and the guide groove into which the guide protrusion is inserted may be formed in the mold 40 and the support member 30, respectively, for the stable mounting of the mold 40. The shape and number of can be freely determined according to the area of the support member (30).

Meanwhile, referring to FIG. 8, the film 20 may be attached to the front surface of the support member 30 through a lamination process. Looking at the manufacturing method in detail, the support member 30 may be a sandwich panel in which the front panel 32, the honeycomb core 31 and the rear panel 33 are integrated, the film 20 before the lamination process is A process of washing the front surface of the supporting member 30 to be attached with distilled water may be performed.

In addition, the film 20 and the support member 40 may be laminated through a pressure sensitive adhesive 70 (PSA), and an edge portion of the film 20 and the support member 40 where lamination is completed. The mold 40 may be assembled to the bracket 40, and the bracket 50 to be described later may be mounted on the support member 30.

Meanwhile, referring to FIG. 5, the film 20 is formed on the inclined surface of the Fresnel lens layer 24 and the Fresnel lens layer 24 formed on one surface of the diffusion layer 23 and the diffusion layer 23. A thin film deposition reflection layer 25 and a color coating layer 26 surrounding the thin film deposition reflection layer 25 may be included, and an image output from the image projection apparatus 1 is incident to the color coating layer 26.

In detail, the film 20 is provided on the front surface of the tint layer and the tint layer provided on the front surface of the hard coat layer and the hardcoat layer on which the back surface is laminated on the support member 30. The thin film deposition reflection layer 25 and the thin film deposition reflection layer 25 formed on the inclined surface of the Fresnel lens layer 24 and the Fresnel lens layer 24 provided on the diffusion layer 23 and the diffusion layer 23. It may include a surrounding color coating layer 26.

Here, the thin film deposition reflection layer 25 may be formed of aluminum, the color coating layer 26 serves to prevent the oxidation of the thin film deposition reflection layer 25, the color coating layer 26 is a black color May have

The thin film deposition reflective layer 25 may be formed on the inclined surface of the Fresnel lens layer 24 to increase luminance even in a bright space. Specifically, the luminance may be improved by about 5.6 times by the slope reflection effect, and the peak gain may be improved by about 5.2 times.

Referring to FIG. 6, the projection screen 10 may further include a bracket 50 mounted on a rear surface of the support member 30 to fix the support member 30 to a wall.

The bracket 50 may have a bar shape extending along the length direction and may be formed of a metal material (for example, aluminum).

In addition, a plurality of insertion holes 35 may be provided on the rear surface of the support member 30, and a plurality of protrusions 51 inserted into the insertion hole 35 may be provided in the bracket 50.

In addition, the bracket 50 is provided with a rectangular slit 52, the bracket 50 may be fixed to the wall (W) by a fastening means (not shown) passing through the slit 52 In addition to the slit 52, the bracket 50 may be provided with a plurality of fastening holes 53 through which a fastening means passes to fix the wall W.

On the other hand, the slit 52 extends in the circumferential direction having a predetermined curvature, the inclination angle of the bracket 50 can be adjusted according to the position of the inside of the slit 52 of the fastening means. The fastening holes 53 may be provided at both end portions of the bracket 50, and the user may wall the bracket 50 through the fastening holes 53 of the end portions unless the slit 52 is provided. Can be fixed at (W).

Thereafter, the user may fix the bracket 50 through the fastening means passing through the slit 52 and adjust the tilting angle of the bracket 50. At this time, the position of the fastening means inside the slit 52 is changed according to the inclination angle of the bracket 50, and the bracket 50 is firmly fixed to the wall W through the fastening holes 53 provided at the remaining ends. The support member 30 may be mounted on the bracket 50 by inserting the insertion portion 35 of the support member 30 into the protrusion 51 of the bracket 50.

Referring to FIG. 7, the projection screen 10 may include one or more mounting members 60 for fixing the support member 30 to a ceiling. The mounting member 60 may include a wire 61 extending from the ceiling and a hook portion 62 provided at an end of the wire 61.

As described above, a plurality of insertion holes 35 may be provided on the rear surface of the support member 30, and the support paper member may be provided in a state in which the hook part 62 is inserted into the insertion hole 35. 30 may be fixed to the ceiling.

In addition, the display device according to an embodiment of the present invention is an image projection apparatus 1 and a film 20 for reflecting the image output from the image projection apparatus 1 and the film 20 is attached to the front In order to fix the support member 30 formed of a metal material to have a plurality of voids 34 and the support member 30 to the wall (W), the bracket 50 mounted on the back of the support member 30 Include.

The image projector 1 may project an image toward the front of the film 20, and the image projector 1 may be a projector having ultra short focus as described above.

The display device related to an embodiment of the present invention may configure an optical system having an optimal display quality through the projection screen 10 and the image projection device 1 described above.

Since the film 20 and the support member 30 are the same as those of the projection screen 10, a detailed description thereof will be omitted.

In addition, the support member 30 may be formed of aluminum, and the plurality of pores 35 may be formed to have a honeycomb structure, and a fluorine coating layer may be formed on a rear surface thereof.

In addition, the film 20 may be attached to one surface of the support member through a lamination process, and the film 20 is formed on the diffusion layer 23 and one surface of the diffusion layer 23. ) May include a lens layer 24, an aluminum thin film deposition reflective layer 25 formed on an inclined surface of the Fresnel lens layer 24, and a black color coating layer 26 surrounding the aluminum thin film deposition reflective layer 25. have.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

1: image projection device
10: Projection Screen
20: Film
30: Support member
40: Mold
50: bracket

Claims

A film for reflecting an image output from the image projector; And
The film is attached to the front surface, projection screen comprising a support member formed of a metal material to have a plurality of voids.

The method of claim 1,
Projection screen, characterized in that the support member is formed of aluminum.

3. The method according to claim 1 or 2,
The support member is a projection screen, characterized in that the plurality of voids are formed to have a honeycomb (honeycomb) structure.

The method of claim 1,
And the film is attached to the front surface of the support member through a lamination process.

3. The method of claim 2,
The support member projection screen, characterized in that the fluorine coating layer is formed on the back.

The method of claim 1, wherein the film,
Diffusion layer;
A fresnel lens layer formed on one surface of the diffusion layer;
A thin film deposition reflection layer formed on an inclined surface of the Fresnel lens layer; And
And a color coating layer surrounding the thin film deposition reflection layer.

The method according to claim 6,
And the thin film deposition reflection layer is formed of aluminum.

The method according to claim 6,
The projection screen, characterized in that the color coating layer has a black color.

The method of claim 1,
Projection screen, characterized in that it further comprises a mold mounted to the edge of the film and the support member.

The method of claim 9,
The mold is formed of aluminum,
Projection screen, characterized in that the mold and the back of the support member is fastened with a screw.

The method of claim 1,
Projection screen, characterized in that it further comprises a bracket mounted to the back of the support member for fixing the support member to the wall.

The method of claim 11,
The rear surface of the support member is provided with a plurality of insertion holes,
Projection screen, characterized in that the bracket is provided with a plurality of projections to be inserted into the insertion hole.

13. The method of claim 12,
The bracket is provided with a rectangular slit,
And the bracket is fixed to the wall by fastening means penetrating the slit.

The method of claim 13,
The slit extends along the circumferential direction having a predetermined curvature,
Projection screen, characterized in that the inclination angle of the bracket is adjusted according to the position inside the slit of the fastening means.

Image projection apparatus;
A film for reflecting an image output from the image projector;
A support member attached to the front surface and formed of a metal material to have a plurality of voids; And
It includes a bracket mounted to the rear of the support member for fixing the support member to the wall,
The image projection apparatus is characterized in that for projecting the image toward the front of the film.

The method of claim 15,
And the support member is made of aluminum.

17. The method according to claim 15 or 16,
The support member is a display device, characterized in that the plurality of voids are formed to have a honeycomb (honeycomb) structure.

The method of claim 15,
And the film is attached to the front surface of the support member through a lamination process.

The method of claim 15,
The support member is a display device, characterized in that the fluorine coating layer is formed on the back.

The method of claim 15, wherein the film,
Diffusion layer;
A fresnel lens layer formed on one surface of the diffusion layer;
An aluminum thin film deposition reflection layer formed on an inclined surface of the Fresnel lens layer; And
And a black color coating layer surrounding the aluminum thin film deposition reflective layer.