KR101510950B1 - Display system - Google Patents

Abstract

A display system according to an embodiment of the present invention comprises: an image projection part; and a display screen disposed toward the image projection part, wherein the display screen comprises a sheet, a hole formed by penetrating the sheet, and an optical waveguide formed within the hole and a light projected from the image projection part can be projected to the opposite side of the image projection part of the display screen via the optical waveguide of the display screen.

Description

Display system {DISPLAY SYSTEM}

The present invention relates to a display system, and more particularly to a display system including an optical waveguide-based display screen.

In the 21st century, with the development of optical communication, researches are actively carried out to apply optical communication technology to communication between computer boards, inter-chip communication within a board, or communication within a CMOS chip.

When optical signal communication technology is applied to a silicon semiconductor VLSI chip, problems such as low speed, high resistance, high heat generation, and parasitic capacitance which are disadvantages in communication technology using electrical signals can be solved. It is expected to be actively studied in the fields of semiconductor and information communication.

In addition, the continuous increase in the demand of the data communication network has inevitably demanded the development of the optical communication technology, which is rapidly increasing the speed of the data communication.

The ability to transmit 10 Gigabits per second (10 Gbps) per second on a single fiber channel dates back to 2000. Since increasing the transmission speed of a single channel requires very expensive devices due to the limitation of the operating speed of the electronic device, wavelength multiplexing technology that can increase the transmission speed by using an optical device is spotlighted.

For example, a prior art document KR 2010-0088545, filed on September 09, 2010, discloses an arrayed optical waveguide device in which nanoparticles are inserted to reduce cross-channel crosstalk.

An object of the present invention is to provide a display system capable of minimizing light or image loss, and realizing high-definition, high-brightness, and low-power consumption precision images.

An object of an embodiment is to provide a display system that is simple in manufacturing method, has a short manufacturing period, and is low in manufacturing cost.

An object of the present invention is to provide a display system that can be applied not only to commercial and industrial video systems but also to various fields such as home and office.

According to an aspect of the present invention, there is provided a display system including an image projection unit and a display screen disposed toward the image projection unit, the display screen including a sheet, a hole formed through the sheet, And the light projected from the image projecting part can be transmitted through the optical waveguide of the display screen to the side opposite to the image projecting part of the display screen.

According to one aspect of the present invention, the optical waveguide is formed by filling a polymer material that facilitates light guiding in the hole, and the polymer material is selected from the group consisting of acrylic, polymethyl methacrylate (PMMA), polypropylene, polyethylene terephthalate (PET) . ≪ / RTI >

According to one aspect of the present invention, one side of the display screen facing the image projecting part includes a light focusing element to improve the optical coupling efficiency of the display screen, and the light focusing element has one end formed in the optical waveguide, And a second condensing element formed on the other end of the first condensing element and having a plurality of condensing lenses disposed adjacent to each other, wherein the first condensing element has a number of paths corresponding to the optical waveguide formed therein, A cross section of a path in the light converging element is provided in a trapezoid shape so that the light transmitted from the image projecting part to the second light converging element can be condensed in the optical waveguide through the first light converging element.

According to one aspect of the present invention, in order to prevent dust or foreign matter from adhering between the condenser lenses of the second condenser element, a third condenser element may be further provided on the side of the second condenser element facing the image projector.

According to one aspect, the other side of the display screen includes a scattering element for improving the divergence efficiency of the display screen, the scattering element is formed at the other end of the optical waveguide, and the number of paths corresponding to the optical waveguide Wherein a cross section of a path in the first scattering element is provided in a trapezoid shape so that light transmitted to the first scattering element through the optical waveguide is scattered outside the display screen .

According to one aspect, the holes may be formed through the sheet using laser technology, ultrasonic drilling techniques, or etching techniques.

According to one aspect, a plurality of display screens may be provided, and a plurality of display screens may be assembled.

According to an aspect of the present invention, there is provided a method of manufacturing a display screen, including the steps of providing a sheet for manufacturing a display screen, processing a hole in the sheet, filling the polymer material in the hole, A step of polishing the surface, and a step of forming a light converging element and a scattering element on the surface of the sheet, wherein an optical waveguide can be formed in the hole by filling the polymer material in the hole.

According to one aspect, the step of machining holes in the sheet may be performed using laser technology, ultrasonic drilling techniques or etching techniques.

According to one aspect of the present invention, in the step of forming a condensing element and a scattering element on the surface of the sheet, the condensing element is formed on one side of the sheet and condenses the transmitted light onto the optical waveguide, And the light that has passed through the optical waveguide can be scattered to the outside.

According to the display system of the embodiment, it is possible to minimize the loss of light or image to be projected, and realize a precise image of high definition, high brightness, and low power consumption.

According to the display system of one embodiment, the manufacturing method is simple, the manufacturing period is short, and the manufacturing cost can be low.

According to the display system of one embodiment, it can be applied not only to commercial and industrial image systems but also to various fields such as home use and office use.

1 shows a display system according to one embodiment.
Figures 2 (a), 2 (b) and 2 (c) show a hole working method for a display screen.
Fig. 3 shows the optical waveguide formed in the hole of the display screen.
Figure 4 shows the surface of the display screen being polished.
Fig. 5 shows a state in which a condensing element and a scattering element are formed on a display screen.
Figure 6 illustrates a plurality of display screens assembled.
7 is a flowchart showing a method of producing a display screen.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. Like reference symbols in the drawings denote like elements.

FIG. 1 shows a display system according to one embodiment, FIGS. 2 (a), (b) and (c) show a hole working method for a display screen, and FIG. 3 shows an optical waveguide Fig. 4 shows a state where the surface of the display screen is polished, Fig. 5 shows a state where a condensing element and a scattering element are formed on a display screen, Fig. 6 shows a state where a plurality of display screens are assembled Lt; / RTI >

Referring to FIG. 1, a display system 10 according to one embodiment may include an image projection unit 100 and a display screen 200.

The image projecting unit 100 may be disposed on a rear surface of the display screen 200 to project light or an image.

The display screen 200 may transmit light or an image transmitted from the image projection unit 100.

Specifically, the display screen 200 may include a sheet 210, a hole 220, and an optical waveguide 230.

The sheet 210 may be formed, for example, in a plane, and the size of the sheet 210 may be variously formed.

In FIG. 1, the sheet 210 is shown as a flat rectangular shape, but the present invention is not limited thereto. The sheet 210 may be formed as a curved surface, or may have a circular or rhombic shape.

A hole 220 may be formed in the sheet 210.

The holes 220 may be formed through the sheet 210.

As shown in Figures 2 (a), 2 (b) and 2 (c), the holes 220 can be formed in the sheet 210 through various methods.

Specifically, as shown in Fig. 2 (a), holes 220 may be formed in the sheet 210 by laser technology.

At this time, the laser apparatus can form holes in the sheet 210 while moving on the sheet 210 in a predetermined pattern using the XYZ stage.

2 (b), holes 220 may be formed in the sheet 210 by an ultrasonic drilling technique.

At this time, the ultrasonic drill mechanism can also form a hole in the sheet 210 while moving on the sheet 210 in a predetermined pattern by using the XYZ stage, like the laser apparatus.

In addition, as shown in FIG. 2 (c), holes 220 may be formed in the sheet 210 by etching techniques.

Specifically, the etching technique shown in Fig. 2 (c) can be performed through steps (i) to (iii).

First, after the sheet 210 is provided as in (i), a photoresist PR is mounted on the sheet 210 by spin coating as in (ii). Then, as shown in (iii), a large mask MA having holes formed in a predetermined pattern on the photoresist PR is mounted. Then, the sheet 210 and the mask MA are exposed to ultraviolet rays as in (iv). Particularly, ultraviolet rays are concentrated on the hole portion of the mask MA.

After the sheet 210 and the mask MA are sufficiently exposed to ultraviolet rays, the mask MA is removed as in (v). At this time, a hole may be formed in the photoresist PR on the sheet 210 at a position corresponding to the hole of the mask MA.

Then, as shown in (vi), the sheet 210 and the hole 220 are also formed at positions corresponding to the holes formed in the photoresist PR through etching.

Finally, a hole 220 may be formed in the sheet 210 by removing the photoresist PR as shown in FIG.

 As described above, the holes 220 can be processed in the sheet 210 in a relatively simple and various manner.

The plurality of holes 220 may be formed in the sheet 210 and the sizes of the holes 220 and the spacing between the holes and the holes 220 may be variously configured.

In addition, the holes 220 may be formed through the sheet 210 in a straight line. Thereby, the optical waveguide 230 to be described below can also be formed in a straight line in the sheet 210.

In the hole 220, an optical waveguide 230 may be formed.

The optical waveguide 230 is a path through which the light transmitted from the image projection unit 100 is guided. The light transmitted to the sheet 210 may be transmitted through the optical waveguide 230 in the hole 220.

In addition, the shape or opening of the optical waveguide 230 may correspond to the hole 220 formed in the sheet 210.

More specifically, if 100 holes 210 are formed in the sheet 210, 100 optical waveguides 230 may be formed. If the holes 220 are formed through the sheet 210 in a straight line, 210, the optical waveguide 230 may also be formed in a straight line.

As shown in FIG. 3, the optical waveguide 230 may be formed by filling a polymer material in the hole 220 to facilitate optical waveguide.

For example, the polymer material may comprise acrylic, polymethylmethacrylate (PMMA), polypropylene, polyethylene terephthalate (PET), and the like.

When the polymer material is injected into the hole 220, it may be preferable to maintain the polymer at a melting temperature to be performed in a solution state. The sheet 210 may then be maintained at room temperature to allow the polymer material injected into the holes 220 of the sheet 210 to solidify. In this case, in addition to the polymer material, the transparent material which can be melted at a high temperature can be injected into the holes 220.

After the optical waveguide 230 is thus formed in the hole 220, the surface of the display screen 200 can be polished, as shown in Fig.

This is in order to flatten the surface of the display screen 200 since the surface of the display screen 200 may have a certain roughness when the polymer and other waveguide materials are hardened.

For example, the polishing operation may be performed by polishing powder or polishing sandpaper.

In addition, the display screen 200 may further include a light focusing element 240 and a scattering element 250.

5, the condensing element 240 may be formed on one side of the display screen 200 facing the image projecting unit 100 to improve the optical coupling efficiency of the display screen 200. Referring to FIG.

Specifically, the light focusing element 240 may include a first light focusing element 242 and a second light focusing element 244.

The first light focusing element 242 may have one end formed in the optical waveguide 230 and a number of paths 2422 corresponding to the optical waveguide 230 may be formed therein.

In addition, the cross section of the path 2422 may be formed in a trapezoid shape so as to be wider from the optical waveguide 230 toward the image projection section 100.

For example, the first light focusing element 242 may be formed of a transparent coating layer, and may have a predetermined thickness in consideration of the number of the optical waveguides 230.

The second light focusing element 244 may be formed at the other end of the first light focusing element 242 and a plurality of condensing lenses 2442 may be disposed adjacent to each other.

For example, the condenser lens 2442 may be configured to abut the path 2422 of the first condensing element 242, and the number of the condenser lenses 2442 may correspond to the number of the paths 2422 .

5, the condenser lens 2442 is shown as an optical lens or a lens array capable of condensing light on the surface of the display screen 200 into the optical waveguide 230. However, the present invention is not limited thereto, The element 244 may be formed by attaching a light-collecting layer that functions in the same manner as the condenser lens 2442.

In addition, a third light focusing element 246 may be further included on the outside of the second light focusing element 244. This is to prevent foreign matter or dust from adhering to the gaps formed between the condenser lenses 2442 of the second light focusing element 244, and may be made of, for example, a surface-hardening coating layer.

The light transmitted from the image projection unit 100 through the condensing element 240 thus formed can be condensed as follows.

The light transmitted from the image projection unit 100 can reach the condenser lens 2442 of the second condensing element 244 through the third condenser element 246. [

The light reaching the condenser lens 2442 enters the first condenser element 242 and can pass through the path 2422 in the first condenser element 242. [

The path 2422 in the first light focusing element 242 may be formed in a trapezoidal shape in section so that the path 2422 may be narrowed from the second light focusing element 244 toward the optical waveguide 230.

Thus, the optical coupling efficiency can be improved and loss of light transmitted from the image projection unit 100 to the display screen 200 can be prevented.

The scattering element 250 may be formed on the other side of the display screen 200, that is, on the side opposite to the image projection unit 100.

The scattering element 250 is provided to improve the divergence efficiency of the display screen 200 and to allow the light transmitted through the image projection unit 100 to be more effectively scattered through the display screen 200.

Specifically, the scattering element 250 may include a first scattering element 252 and a second scattering element 254.

The first scattering element 252 may be formed of a transparent coating at the other end of the optical waveguide 230 and may have a predetermined thickness in consideration of the number of the optical waveguides 230. In addition, 242, respectively.

In addition, a number of paths 2522 corresponding to the optical waveguide 230 may be formed in the first scattering element 252.

The cross section of the path 2522 may be formed in a trapezoid shape so as to be wider from the optical waveguide 230 toward the outside of the display screen 200.

In addition, a second scattering element 254 may be formed at the other end of the path 2522.

The second scattering element 254 can efficiently scatter light passing through the optical waveguide 230 on the display screen 200 surface.

Light having passed through the optical waveguide 230 through the scattering element 250 thus formed may be scattered as follows.

The light having passed through the optical waveguide 230 enters the first scattering element 252 and can pass through the path 2522 in the first scattering element 252. [

The path 2522 in the first scattering element 252 is formed in a trapezoidal shape so that the path 2522 can be widened from the optical waveguide 230 toward the second scattering element 254.

 As a result, the light scattering efficiency can be improved and efficient scattering can be achieved on the surface of the display screen 200.

In addition, the display screen 200 thus formed may be provided in plurality.

Referring to Fig. 6 in particular, the display screen 200 is combined with N in the lateral direction and M in the longitudinal direction so that a large display screen can be formed.

The large-sized display screen can realize a large-sized display such as an indoor and outdoor video billboard and a movie theater screen.

Hereinafter, a method of manufacturing a display screen of a display system according to an embodiment will be described.

7 is a flowchart showing a method of producing a display screen.

Referring to Fig. 7, the display screen can be made as follows.

First, a sheet for producing a display screen is provided (S10).

A hole is machined in the sheet (S20).

At this time, the hole can be processed by utilizing laser technology, ultrasonic drilling technique, or etching technique as described above.

The polymer material is filled in the processed holes (S30).

The polymer material may include, for example, acrylic, polymethylmethacrylate (PMMA), polypropylene, and polyethylene terephthalate (PET) as materials for facilitating light guidance.

By filling the polymer material into the hole in this way, an optical waveguide can be formed on the display screen.

Then, the surface of the sheet is polished (S40).

This is for the purpose of smoothing the sheet surface after the polymer material has been injected into the holes and thereby making the sheet surface rough.

After the surface of the sheet is polished, a light converging element and a scattering element are formed on the surface of the sheet (S50).

The light focusing element is formed on one side of the sheet to condense the light transmitted to the display screen into an optical waveguide, and the scattering element may be formed on the other side of the sheet to scatter light passing through the optical waveguide to the outside of the display screen have.

In addition, a plurality of such display screens may be provided, and a plurality of display screens may be combined to form a large display screen.

Accordingly, the display system according to an exemplary embodiment can minimize the loss of light or image to be projected, realize high-definition, high-brightness, and low-power consumption precision images, can be manufactured in a simple manner, have a short production period, , Commercial and industrial video systems, as well as in various fields such as home use and office use.

Although the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And various modifications and changes may be made thereto without departing from the scope of the present invention. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

10: Display screen
100:
200: Display screen
210: sheet
220: hole
230: optical waveguide
240: condensing element
242: first condensing element
2422: Path
244: second condensing element
2442: condensing lens
246: Third condensing element
250: element of spawning
252: First scattering element
2522: Path
254: Second scattering element

Claims (10)

An image projecting unit; And
A display screen disposed toward the image projection unit;
/ RTI >
Wherein the display screen comprises:
Sheet;
A hole formed through the sheet; And
An optical waveguide formed in the hole;
Lt; / RTI >
The light projected from the image projecting unit is transmitted to the side opposite to the image projecting unit of the display screen through the optical waveguide of the display screen,
Wherein one side of the display screen facing the image projection portion includes a light focusing element to improve the light coupling efficiency of the display screen,
The light-
A first condensing element having one end formed in the optical waveguide and having a number of paths formed therein corresponding to the optical waveguide; And
A second condensing element formed at the other end of the first condensing element and having a plurality of condensing lenses disposed adjacent to each other;
Lt; / RTI >
Wherein a cross section of a path in the first light focusing element is provided in a trapezoid shape so that light transmitted from the image projection section to the second light focusing element can be condensed in the optical waveguide through the first light focusing element.
The method according to claim 1,
Wherein the optical waveguide is formed by filling a polymer material that facilitates light guiding in the hole, the polymer material being selected from the group consisting of acrylic, polymethyl methacrylate (PMMA), polypropylene, polyethylene terephthalate (PET) .
delete The method according to claim 1,
And a third light converging element is further disposed on a side of the second light converging element facing the image projecting unit to prevent dust or foreign matter from adhering between the light converging lenses of the second light focusing element.
The method according to claim 1,
The other side of the display screen includes scattering elements to improve the divergence efficiency of the display screen,
The scattering element
And a first scattering element formed at the other end of the optical waveguide and having a number of paths formed therein corresponding to the optical waveguide,
Wherein a cross section of a path in the first scattering element is provided in a trapezoid shape so that light transmitted to the first scattering element through the optical waveguide can be scattered outside the display screen.
The method according to claim 1,
Wherein the hole is formed through the sheet using laser technology, ultrasonic drilling technology or etching technology.
The method according to claim 1,
Wherein the plurality of display screens are provided so that a plurality of display screens can be assembled.
Providing a sheet for making a display screen;
Processing the holes in the sheet;
Filling the polymer material within the hole;
The surface of the sheet being polished; And
Forming a light focusing element and a scattering element on a surface of the sheet;
Lt; / RTI >
An optical waveguide is formed in the hole by filling the polymer material in the hole,
In the step of forming the light converging element and the scattering element on the surface of the sheet,
Wherein the light converging element includes a first light focusing element having one end formed in the optical waveguide and a number of paths corresponding to the optical waveguide formed therein and a second light focusing element formed at the other end of the first light focusing element, And a second light-converging element disposed in the second light-
Wherein a cross section of a path in the first light focusing element is provided in a trapezoid shape so that light transmitted to the second light focusing element can be condensed in the optical waveguide through the first light focusing element.
9. The method of claim 8,
Wherein the step of processing holes in the sheet is performed using laser technology, ultrasonic drilling techniques or etching techniques.
9. The method of claim 8,
Wherein the light converging element is formed on one side of the sheet and condenses the transmitted light onto the optical waveguide, and the scattering element is formed on the other side of the sheet And scattering light passing through the optical waveguide to the outside.

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