KR101814803B1 - Display device - Google Patents

Abstract

A display device is started. The display device includes a light source; A light guide plate on which light emitted from the light source is incident; A light conversion member interposed between the light source and the light guide plate; And a spacing member interposed between the light source and the light conversion member.

Description

Display device {DISPLAY DEVICE}

The embodiment relates to a display device.

Light emitting diodes (LEDs) are semiconductor devices that convert electricity into ultraviolet rays, visible rays, and infrared rays by using the characteristics of compound semiconductors. They are mainly used in home appliances, remote controllers, and large electric sign boards.

The high-intensity LED light source is used as an illumination light. It has high energy efficiency, long life and low replacement cost. It is resistant to vibration and shock, and it does not require the use of toxic substances such as mercury. It is replacing incandescent lamps and fluorescent lamps.

Also, the LED is very advantageous as a light source such as a medium and large-sized LCD TV and a monitor. Compared to CCFL (Cold Cathode Fluorescent Lamp), which is mainly used in LCD (Liquid Crystal Display), it has excellent color purity, low power consumption, and easy miniaturization, Is in progress.

The embodiment intends to provide a display device having improved lifetime and durability.

A display device according to an embodiment includes a light source; A light guide plate on which light emitted from the light source is incident; A light conversion member interposed between the light source and the light guide plate; And a spacing member interposed between the light source and the light conversion member.

A display device according to an embodiment includes a light guide plate; A light source disposed on one side of the light guide plate; And a light conversion member disposed inside the groove or the hole formed in the light guide plate.

The display device according to the embodiment includes the spacing member. By the spacing member, the light source and the light conversion member are spaced from each other. Accordingly, the space between the light source and the light conversion member is sufficiently separated, and the light emitted from the light source can be sufficiently diffused to be incident on the light conversion member.

Therefore, the display device according to the embodiment can prevent a phenomenon that the light emitted from the light source is concentratedly incident on a part of the light conversion member. As a result, since the display device according to the embodiment uniformly introduces light into the light conversion member, it is possible to prevent denaturation of the light conversion particles in the light conversion member caused by the concentrated light.

Therefore, the display device according to the embodiment can have an improved lifetime and durability.

1 is an exploded perspective view showing a liquid crystal display device according to a first embodiment.
FIG. 2 is a cross-sectional view showing a section cut along AA 'in FIG. 1; FIG.
3 is a cross-sectional view showing one end surface of the light conversion member.
4 is a sectional view showing a light emitting diode, a spacer, a light conversion member, and a light guide plate.
5 is a cross-sectional view illustrating a light emitting diode, a contact member, a light conversion member, and a light guide plate according to a second embodiment.
6 and 7 are views showing a process of forming the contact member according to the second embodiment.
8 is a view showing a light emitting diode, a light converting member, and a light guide plate according to the third embodiment.
9 is a cross-sectional view showing a cross section of the light emitting diode, the light converting member, and the light guide plate according to the third embodiment.
10 is a view showing a light emitting diode, a light converting member, and a light guide plate according to a fourth embodiment.
11 is a cross-sectional view showing a cross section of a light emitting diode, a light converting member, and a light guide plate according to a fourth embodiment.

In the description of the embodiments, it is described that each substrate, frame, sheet, layer or pattern is formed "on" or "under" each substrate, frame, sheet, In this case, "on" and "under " all include being formed either directly or indirectly through another element. In addition, the upper or lower reference of each component is described with reference to the drawings. The size of each component in the drawings may be exaggerated for the sake of explanation and does not mean the size actually applied.

1 is an exploded perspective view showing a liquid crystal display device according to a first embodiment. 2 is a cross-sectional view showing a section taken along the line A-A in Fig. 3 is a cross-sectional view showing one end surface of the light conversion member. 4 is a sectional view showing a light emitting diode, a spacer, a light conversion member, and a light guide plate.

1 to 5, a liquid crystal display according to an embodiment includes a mold frame 10, a backlight assembly 20, and a liquid crystal panel 30.

The mold frame 10 receives the backlight assembly 20 and the liquid crystal panel 30. The mold frame 10 has a rectangular frame shape. Examples of the material used for the mold frame 10 include plastic or reinforced plastic.

In addition, a chassis supporting the mold frame 10 and supporting the backlight assembly 20 may be disposed below the mold frame 10. The chassis may be disposed on a side surface of the mold frame 10.

The backlight assembly 20 is disposed inside the mold frame 10 and emits light toward the liquid crystal panel 30. The backlight assembly 20 includes a reflective sheet 100, a light guide plate 200, a light emitting diode 300, a light conversion member 400, a spacer 210, a plurality of optical sheets 500, flexible printed circuit board (FPCB) 600.

The reflective sheet 100 reflects light emitted from the light emitting diode 300 upward.

The light guide plate 200 is disposed on the reflective sheet 100 and receives light emitted from the light emitting diode 300 and emits it upward through reflection, refraction, scattering, or the like. The light guide plate 200 is a light guide member for guiding light emitted from the light emitting diode 300.

The light guide plate 200 includes an incident surface facing the light emitting diode 300. That is, the surface of the light guide plate 200 facing the light emitting diode 300 is an incident surface.

The light emitting diode 300 is disposed on a side surface of the light guide plate 200. More specifically, the light emitting diode 300 is disposed on the incident surface.

The light emitting diode 300 is a light source for generating light. More specifically, the light emitting diode 300 emits light toward the light conversion member 400.

The light emitting diode 300 may be a blue light emitting diode 300 for generating blue light or a UV light emitting diode 300 for generating ultraviolet light. That is, the light emitting diode 300 may generate blue light having a wavelength range of about 430 nm to about 470 nm or ultraviolet light having a wavelength range of about 300 nm to about 400 nm.

The light emitting diode 300 is mounted on the flexible printed circuit board 600. The light emitting diode 300 is disposed under the flexible printed circuit board 600. The light emitting diode 300 is driven by receiving a drive signal through the flexible printed circuit board 600.

The light conversion member 400 is interposed between the light emitting diode 300 and the light guide plate 200. More specifically, the light conversion member 400 is interposed between the spacer 210 and the light guide plate 200.

4, the light conversion member 400 is adhered to the side surface of the light guide plate 200. As shown in FIG. More specifically, the light conversion member 400 is attached to the incident surface of the light guide plate 200. Further, the light conversion member 400 may be adhered to the spacer 210.

That is, the light conversion member 400 may be attached to the light guide plate 200 by the first contact member 301 and may be attached to the spacer 210 by the second contact member 302. The first contact member 301 may be in close contact with the light conversion member 400 and the light guide plate 200. The first contact member 301 may be in close contact with the light conversion member 400 and the spacer 210.

In addition, the light emitting diode 300 may be attached to the spacer 210. At this time, a third contact member 303 may be interposed between the light emitting diode 300 and the spacer 210. The third contact member 303 may be in close contact with the light emitting diode 300 and the spacer 210.

The light conversion member 400 receives the light emitted from the light emitting diode 300 and converts the wavelength. For example, the light conversion member 400 may convert blue light emitted from the light emitting diode 300 into green light and red light. That is, the light conversion member 400 converts part of the blue light into green light having a wavelength range of about 520 nm to about 560 nm, and converts the other part of the blue light to a light having a wavelength range of about 630 nm to about 660 nm It can be converted into red light.

The light conversion member 400 may convert ultraviolet light emitted from the light emitting diode 300 into blue light, green light, and red light. That is, the light conversion member 400 converts a part of the ultraviolet ray into blue light having a wavelength range of about 430 nm to about 470 nm, and converts the other part of the ultraviolet light to a light having a wavelength range of about 520 nm to about 560 nm Green light, and another part of the ultraviolet light into red light having a wavelength band between about 630 nm and about 660 nm.

Accordingly, the light passing through the light conversion member 400 and the light converted by the light conversion member 400 can form white light. That is, the blue light, the green light, and the red light may be combined, and the white light may be incident on the light guide plate 200.

2 and 3, the light conversion member 400 includes a tube 410, a sealing member 420, a plurality of light conversion particles 430, and a matrix 440.

The tube 410 receives the sealing member 420, the light conversion particles 430, and the matrix 440. That is, the tube 410 is a container for receiving the sealing member 420, the light conversion particles 430, and the matrix 440. In addition, the tube 410 has a shape elongated in one direction.

The tube 410 may have the shape of a rectangular tube 410. That is, the cross section perpendicular to the longitudinal direction of the tube 410 may have a rectangular shape. Further, the width of the tube 410 may be about 0.6 mm, and the height of the tube 410 may be about 0.2 mm. That is, the tube 410 may be a capillary tube.

The tube 410 is transparent. Examples of the material used for the tube 410 include glass and the like. That is, the tube 410 may be a glass capillary tube.

The sealing member 420 is disposed inside the tube 410. The sealing member 420 is disposed at an end of the tube 410. The sealing member (420) seals the inside of the tube (410). The sealing member 420 may include an epoxy resin.

The photo-conversion particles 430 are disposed inside the tube 410. More specifically, the light conversion particles 430 are uniformly dispersed in the matrix 440, and the matrix 440 is disposed inside the tube 410.

The photoconversion particles 430 convert the wavelength of the light emitted from the light emitting diode 300. The photoconversion particles 430 receive the light emitted from the light emitting diode 300 and convert the wavelength. For example, the light conversion particles 430 may convert blue light emitted from the light emitting diode 300 into green light and red light. In other words, some of the light conversion particles 430 convert the blue light into green light having a wavelength range of about 520 nm to about 560 nm, and another part of the light conversion particles 430 converts the blue light to about 630 And can be converted into red light having a wavelength band of from about nm to about 660 nm.

Alternatively, the light conversion particles 430 may convert ultraviolet light emitted from the light emitting diode 300 into blue light, green light, and red light. That is, some of the photo-conversion particles 430 convert the ultraviolet light into blue light having a wavelength range of about 430 nm to about 470 nm, and another part of the photo-conversion particles 430 converts the ultraviolet light to about 520 Can be converted into green light having a wavelength band between nm and 560 nm. Further, another part of the light conversion particles 430 may convert the ultraviolet ray into red light having a wavelength band of about 630 nm to about 660 nm.

That is, when the light emitting diode 300 is a blue light emitting diode 300 generating blue light, the light converting particles 430 converting blue light into green light and red light, respectively, may be used. Alternatively, when the light emitting diode 300 is a UV light emitting diode 300 that generates ultraviolet rays, the light conversion particles 430 that convert ultraviolet light into blue light, green light, and red light, respectively, may be used.

The photoconversion particles 430 may be a plurality of quantum dots (QDs). The quantum dot may include core nanocrystals and shell nanocrystals surrounding the core nanocrystals. In addition, the quantum dot may include an organic ligand bound to the shell nanocrystal. In addition, the quantum dot may include an organic coating layer surrounding the shell nanocrystals.

The shell nanocrystals may be formed of two or more layers. The shell nanocrystals are formed on the surface of the core nanocrystals. The quantum dot may convert the wavelength of the light incident on the core core crystal into a long wavelength through the shell nanocrystals forming the shell layer and increase the light efficiency.

The quantum dot may include at least one of a group II compound semiconductor, a group III compound semiconductor, a group V compound semiconductor, and a group VI compound semiconductor. More specifically, the core nanocrystals may include Cdse, InGaP, CdTe, CdS, ZnSe, ZnTe, ZnS, HgTe or HgS. The shell nanocrystals may include CuZnS, CdSe, CdTe, CdS, ZnSe, ZnTe, ZnS, HgTe or HgS. The diameter of the quantum dot may be 1 nm to 10 nm.

The wavelength of light emitted from the quantum dots can be controlled by the size of the quantum dots or the molar ratio of the molecular cluster compound and the nanoparticle precursor in the synthesis process. The organic ligand may include pyridine, mercapto alcohol, thiol, phosphine, phosphine oxide, and the like. The organic ligands serve to stabilize unstable quantum dots after synthesis. After synthesis, a dangling bond is formed on the outer periphery, and the quantum dots may become unstable due to the dangling bonds. However, one end of the organic ligand is in an unbonded state, and one end of the unbound organic ligand bonds with the dangling bond, thereby stabilizing the quantum dot.

Particularly, when the quantum dot has a size smaller than the Bohr radius of an exciton formed by electrons and holes excited by light, electricity or the like, a quantum confinement effect is generated to have a staggering energy level and an energy gap The size of the image is changed. Further, the charge is confined within the quantum dots, so that it has a high luminous efficiency.

Unlike general fluorescent dyes, the quantum dots vary in fluorescence wavelength depending on the particle size. That is, as the size of the particle becomes smaller, it emits light having a shorter wavelength, and the particle size can be adjusted to produce fluorescence in a visible light region of a desired wavelength. In addition, since the extinction coefficient is 100 to 1000 times higher than that of a general dye, and the quantum yield is also high, it produces very high fluorescence.

The quantum dot can be synthesized by a chemical wet process. Here, the chemical wet method is a method of growing particles by adding a precursor material to an organic solvent, and the quantum dots can be synthesized by a chemical wet method.

The matrix 440 surrounds the photo-conversion particles 430. That is, the matrix 440 uniformly disperses the light conversion particles 430 therein. The matrix 440 may be comprised of a polymer. The matrix 440 is transparent. That is, the matrix 440 may be formed of a transparent polymer.

The matrix 440 is disposed within the tube 410. That is, the matrix 440 is entirely filled in the tube 410. The matrix 440 may be in close contact with the inner surface of the tube 410.

An air layer is formed between the sealing member 420 and the matrix 440. The air layer 450 is filled with nitrogen. The air layer 450 performs a buffer function between the sealing member 420 and the matrix 440.

The light conversion member 400 may be formed by the following method.

First, the photoconversion particles 430 are uniformly dispersed in the resin composition. The resin composition is transparent. The resin composition may have photocurability.

Thereafter, the inside of the tube 410 in which the scattering pattern 411 is formed is depressurized, the inlet of the tube 410 is locked in the resin composition in which the photo-conversion particles 430 are dispersed, and the ambient pressure is raised . Accordingly, the resin composition in which the photo-conversion particles 430 are dispersed is introduced into the tube 410.

Thereafter, a part of the resin composition flowing into the tube 410 is removed, and the inlet portion of the tube 410 is emptied.

Thereafter, the resin composition flowing into the tube 410 is cured by ultraviolet rays or the like, and the matrix 440 is formed.

Then, the epoxy resin composition flows into the inlet of the tube 410. Thereafter, the introduced epoxy resin composition is cured, and the sealing member 420 is formed. The process of forming the sealing member 420 proceeds in a nitrogen atmosphere so that an air layer 450 containing nitrogen can be formed between the sealing member 420 and the matrix 440.

As shown in FIG. 4, the spacer 210 is disposed between the light emitting diode 300 and the light conversion member 400. The spacer 210 is a spacing member that separates the light conversion member 400 from the light emitting diode 300.

That is, the distance between the light emitting diode 300 and the light conversion member 400 may be larger than the width W of the spacer 210. For example, the width W of the spacer 210 may be about 200 [mu] m to about 2.5 mm. More specifically, the width W of the spacer 210 may be about 600 μm to about 2.5 mm.

The height H of the spacer 210 may be substantially equal to the thickness T of the light guide plate 200. In addition, the spacer 210 is transparent. Examples of the material used for the spacer 210 include a transparent polymer or glass. In addition, the refractive index of the spacer 210 may correspond to the refractive index of the light guide plate 200. That is, the refractive index of the spacer 210 may be substantially equal to the refractive index of the light guide plate 200.

The optical sheets 500 are disposed on the light guide plate 200. The optical sheets 500 improve the characteristics of light passing therethrough.

The flexible printed circuit board 600 is electrically connected to the light emitting diode 300. The light emitting diode 300 can be mounted. The flexible printed circuit board 600 is a flexible printed circuit board, and is disposed inside the mold frame 10. The flexible printed circuit board 600 is disposed on the light guide plate 200.

The flexible printed circuit board may be adhered to the light guide plate 200. That is, a double-sided tape is interposed between the flexible printed circuit board and the light guide plate 200, and the flexible printed circuit board can be adhered to the light guide plate 200.

The mold frame 10 and the backlight assembly 20 constitute a backlight unit. That is, the backlight unit includes the mold frame 10 and the backlight assembly 20.

The liquid crystal panel 30 is disposed inside the mold frame 10 and disposed on the optical sheets 500.

The liquid crystal panel 30 displays an image by adjusting the intensity of light passing through the liquid crystal panel 30. That is, the liquid crystal panel 300 is a display panel for displaying an image. The liquid crystal panel 30 includes a TFT substrate, a color filter substrate, a liquid crystal layer interposed between the two substrates, and polarizing filters.

As described above, the light emitting diode 300 and the light conversion member 400 are spaced from each other by the spacers 210. The light emitted from the light emitting diode 300 is sufficiently diffused and can be incident on the light conversion member 400 .

Therefore, the liquid crystal display device according to the embodiment can prevent the light emitted from the light emitting diode 300 from intensively entering a part of the light conversion member 400. As a result, since the liquid crystal display according to the embodiment uniformly injects light into the light conversion member 400, it is possible to prevent denaturation of the light conversion particles generated by the concentrated light.

That is, the liquid crystal display according to the embodiment can prevent a phenomenon in which a part of the photoconversion particles are intensively irradiated with light, and the photoconversion particles are partially deteriorated.

In addition, the spacer 210 can reinforce the strength of the light conversion member 400. That is, the spacer 210 may protect the light conversion member 400 by sandwiching the light conversion member 400 together with the light guide plate 200. Particularly, when the tube 410 is formed of glass, it is fragile. At this time, since the spacer 210 protects the tube 410, the liquid crystal display according to the embodiment can have an improved strength.

Therefore, the display device according to the embodiment can have an improved lifetime and durability.

5 is a cross-sectional view illustrating the light emitting diode, the fourth contact member, the light conversion member, and the light guide plate according to the second embodiment. 6 and 7 are views showing a process of forming the contact member according to the second embodiment. In the description of this embodiment, the description of the above-described liquid crystal display device will be referred to, and the fourth contact member will be further described. The description of the foregoing embodiments can be essentially combined with the description of the present embodiment except for the changed portions.

5 to 7, a fourth contact member 304 is interposed between the light emitting diode 300 and the light conversion member 400. As shown in FIG.

The fourth contact member 304 is in close contact with the light emitting diode 300 and the light conversion member 400. Further, the fourth contact member 304 separates the light emitting diode 300 and the light conversion member 400 from each other. The width W4 of the fourth contact member 304 is larger than the width W1 of the first contact member 301. [

For example, the width W4 of the fourth contact member 304 may be about 200 탆 to about 2.5 mm. More specifically, the width W4 of the fourth contact member 304 may be about 600 mu m to about 2.5 mm.

The fourth contact member 304 closely contacts the light emitting diode 300 to the light conversion member 400 and simultaneously exposes the light emitting diode 300 and the light conversion member 400 to each other It is separated.

Referring to FIGS. 6 and 7, the fourth contact member 304 may be formed by the following method.

First, the light emitting diode 300 and the light conversion member 400 are spaced apart from each other at desired intervals. At this time, the distance between the light emitting diode 300 and the light conversion member 400 may be about 200 μm to about 2.5 mm. More specifically, the distance between the light emitting diode 300 and the light conversion member 400 may be about 600 μm to about 2.5 mm.

6, a light-curable resin composition 305 is injected between the light emitting diode 300 and the light conversion member 400. As shown in FIG. The photocurable resin composition 305 may include an epoxy resin.

7, ultraviolet light is irradiated onto the injected photo-curable resin composition 305, the injected photo-curable resin composition 305 is cured, and the fourth contact member 304 is formed do.

As described above, the interval between the light emitting diode 300 and the light conversion member 400 is increased as much as desired by the fourth contact member 304, and the liquid crystal display device according to the embodiment has improved lifetime and durability have.

Also, the liquid crystal display according to the present embodiment can increase the interval between the light emitting diode 300 and the light conversion member 400 without using any additional member such as the spacer 210 or the like.

8 is a view showing a light emitting diode, a light converting member, and a light guide plate according to the third embodiment. 9 is a cross-sectional view showing a cross section of the light emitting diode, the light converting member, and the light guide plate according to the third embodiment. In the description of the present embodiment, the description of the above-described liquid crystal display devices will be referred to, and the light guide plate will be further described. The description of the foregoing embodiments can be essentially combined with the description of the present embodiment except for the changed portions.

Referring to FIGS. 8 and 9, a groove 201 is formed in the light guide plate 200. The grooves 201 may be formed on the upper surface of the light guide plate 200. The groove 201 may have a shape corresponding to the light conversion member 400.

That is, the depth of the groove 201 may correspond to the height of the light conversion member 400. In addition, the width of the groove 201 may correspond to the width of the light conversion member 400. Alternatively, the depth of the groove 201 may be greater than the height of the light conversion member 400, and the width of the groove 201 may be greater than the width of the light conversion member 400.

The light guide plate 200 may include a light guide part 220, a spacing part 230, and a first support part 240.

The light guide unit 220 guides the light converted by the light conversion member 400 and the light passing through the light conversion member 400 and emits the light upward. That is, the light guide unit 220 reflects, refracts, and scatters incident light, and exits upward through the upper surface.

A part of the inner surface of the groove is an incident surface of the light guide part 220.

The spacing portion 230 is disposed between the light emitting diode 300 and the light conversion member 400. The spacing part 230 separates the light emitting diode 300 and the light conversion member 400 from each other.

That is, the distance between the light emitting diode 300 and the light conversion member 400 may be greater than the width W5 of the spacing portion 230. For example, the width W5 of the spacing portion 230 may be about 200 탆 to about 2.5 mm. More specifically, the width W5 of the spacing portion 230 may be about 600 占 퐉 to about 2.5 mm.

The first support part 240 extends from the spacing part 230 to the light guide part 220. The first support portion 240 is disposed below the light conversion member 400. In addition, the first support part 240 supports the light conversion member 400.

The first support portion 240 constitutes the bottom of the groove. The light guide part 220, the spacing part 230, and the first support part 240 are integrally formed. That is, the light guide part 220, the spacing part 230, and the first support part 240 may be formed of the same material.

The light conversion member 400 is disposed inside the groove. That is, the light conversion member 400 is inserted into the groove.

In addition, the groove may be filled with the fifth contact member. That is, the fifth contact member may be a filling member which is entirely filled in the groove.

For example, the fifth contact member may be interposed between the light conversion member 400 and the inner surface of the groove. The fifth contact member may be in close contact with the light conversion member 400 and may be in close contact with the inner surface of the groove.

In order to form the fifth contact member, the photo-curable resin composition may be injected into the groove after the photo-conversion member 400 is inserted into the groove. Thereafter, the resin composition injected into the groove is cured by ultraviolet rays, and the fifth contact member can be formed.

Since the light conversion member 400 is inserted in the groove, the liquid crystal display according to the embodiment can be easily manufactured. Particularly, the liquid crystal display device according to the present embodiment does not require a step of attaching the light conversion member, the spacer, and the like to the light guide plate 200.

Therefore, the liquid crystal display device according to the present embodiment can be manufactured by a simple process while having an improved life and durability.

10 is a view showing a light emitting diode, a light converting member, and a light guide plate according to a fourth embodiment. 11 is a cross-sectional view showing a cross section of a light emitting diode, a light converting member, and a light guide plate according to a fourth embodiment. In the description of the present embodiment, the description of the above-described liquid crystal display devices will be referred to, and the light guide plate will be further described. The description of the foregoing embodiments can be essentially combined with the description of the present embodiment except for the changed portions.

Referring to FIGS. 10 and 11, grooves 202 are formed on side surfaces of the light guide plate 200. The grooves 202 are formed to extend along the incident surface of the light guide plate 200.

The light guide plate 200 includes a light guide 220, a spacing 230, a first support 240, and a second support 250.

The second support part 250 extends from the spacing part 230 to the light guide part 220. The second support portion 250 is disposed on the light conversion member 400. The second support portion 250 faces the first support portion 240 with the light conversion member 400 interposed therebetween. That is, the first support portion 240 and the second support portion 250 sandwich the light conversion member 400.

The spacing part 230, the light guide part 220, the first support part 240 and the second support part 250 surround the light conversion member 400. Accordingly, the light conversion member 400 can be firmly fixed to the inside of the light guide plate 200. That is, the light conversion member 400 may be fixed by the second support part 250 so as not to be separated from the light guide plate 200.

Therefore, in order to fix the light conversion member 400 to the light guide plate 200, an adhesive such as a contact member is not required to be used. Nevertheless, the photo-curable resin composition may be injected into the groove, cured, and a contact member may be formed.

Therefore, the liquid crystal display device according to the present embodiment can be manufactured by a simple process while having an improved life and durability.

In addition, the features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (10)

Light source;
A light guide plate on which light emitted from the light source is incident;
A light conversion member interposed between the light source and the light guide plate;
A spacing member interposed between the light source and the light conversion member; And
And a first contact member disposed between the light conversion member and the light guide plate,
Wherein the photo-
tube;
A sealing member disposed at an end of the tube inside the tube;
A matrix disposed within the tube;
A quantum dot dispersed in the matrix; And
And an air layer disposed between the sealing member and the matrix,
And the width of the spacer is 200 m to 2.5 mm. The method according to claim 1,
And a second contact member disposed between the photo-conversion member and the spacing member. The display device according to claim 1, wherein the spacing member is in close contact with the light conversion member and the light source. The display device according to claim 1, wherein a refractive index of the spacer is equal to a refractive index of the light guide plate. The method according to claim 2, wherein
And a third contact member disposed between the light source and the spacing member. The method according to claim 1,
Wherein a height of the spacing member is equal to a thickness of the light guide plate. The method according to claim 1,
And the width of the spacing member is 600 m to 2.5 mm. 6. The method of claim 5,
And the width of the spacing member is defined as a distance between the second contact member and the third contact member. delete delete

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