KR101189326B1 - Display and method of fabricating wavelength conversion member - Google Patents

Abstract

PURPOSE: A display device and a method for manufacturing a wavelength converting member are provided to prevent light from being leaked upward or downward and make more light to be incident on a light guide plate. CONSTITUTION: A wavelength converting member is adjacent to a light source. The wavelength converting member includes wavelength converting particles(430), a tube(410), and a reflection unit. The wavelength converting particles convert the wavelength of light emitted from the light source. The tube receives the wavelength converting particles. The reflection unit is formed on at least one side of the tube.

Description

DISPLAY AND METHOD OF FABRICATING WAVELENGTH CONVERSION MEMBER}

An embodiment relates to a method of manufacturing a display device and a wavelength conversion member.

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 provides a method of manufacturing a display device and a wavelength conversion member having improved luminance and reliability.

A display device according to an embodiment includes a light source; And a wavelength conversion member disposed adjacent to the light source, wherein the wavelength conversion member comprises: wavelength conversion particles for converting a wavelength of light emitted from the light source; A tube containing the wavelength conversion particles; And a reflector formed on one surface of the tube.

A method of manufacturing a wavelength converting member according to an embodiment includes forming a reflecting portion in a plurality of tubes and disposing a plurality of wavelength converting particles in the tubes.

The display device according to the embodiment includes a reflector formed on one surface of the tube. Accordingly, the light emitted from the light source and converted by the wavelength converting member can be effectively incident on the light guide plate.

That is, the reflector reflects light passing through the wavelength conversion member and enters the light guide plate. The reflector reflects the light converted by the wavelength conversion member and enters the light guide plate.

Accordingly, the reflector prevents light from leaking upwards or downwards, and causes more light to enter the light guide plate. Thus, the display device according to the embodiment can have improved luminance.

In addition, the reflector may be made of a metal having high thermal conductivity. Accordingly, the reflector may effectively transmit heat generated from the light source and emit the heat.

Thus, the display device according to the embodiment can have improved durability and reliability.

1 is an exploded perspective view of a liquid crystal display 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 perspective view illustrating the wavelength conversion member.
FIG. 4 is a cross-sectional view showing a section cut along BB 'in FIG. 3; FIG.
FIG. 5 is a cross-sectional view illustrating a cross section taken along CC ′ in FIG. 3.
6 to 8 are views illustrating a process of manufacturing the wavelength conversion member according to the embodiment.
9 is a perspective view illustrating a light emitting diode, a wavelength conversion member, and a light guide plate according to the second embodiment.
10 is a cross-sectional view illustrating a cross section of the light emitting diode, the wavelength conversion member, and the light guide plate.
11 is a view illustrating a process of manufacturing the wavelength conversion member according to the second embodiment.

In the description of the embodiments, it is described that each substrate, frame, sheet, layer or pattern, etc., is formed on or "under" of each substrate, frame, sheet, layer or pattern, etc. In the case, “on” and “under” include both being formed “directly” or “indirectly” through other components. 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. FIG. 2 is a cross-sectional view illustrating a cross section taken along line AA ′ in FIG. 1. 3 is a perspective view illustrating the wavelength conversion member. Fig. 4 is a cross-sectional view showing a section cut along the line B-B 'in Fig. 3; Fig. FIG. 5 is a cross-sectional view illustrating a cross section taken along line CC ′ in FIG. 3. 6 to 8 are views illustrating a process of manufacturing the wavelength conversion member according to the embodiment.

1 to 4, a liquid crystal display device 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 may include a reflective sheet 100, a light guide plate 200, a light source, for example, a light emitting diode 300, a wavelength conversion member 400, a plurality of optical sheets 500, and a flexible printed circuit board. and a 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 reflects the light upward through reflection, refraction, scattering, or the like.

The light guide plate 200 includes an incident surface facing the light emitting diode 300. That is, one side of the light guide plate 200 facing the light emitting diode 300 is an incident surface. The light emitting diodes 300 are disposed on side surfaces of the light guide plate 200. In more detail, the light emitting diodes 300 are disposed on the incident surface of the light guide plate 200. The light emitting diode 300 is a light source for generating light. In more detail, the light emitting diodes 300 emit light toward the wavelength conversion member 400.

The light emitting diodes 300 may be blue light emitting diodes generating blue light or UV light emitting diodes generating ultraviolet light. That is, the light emitting diodes 300 may generate blue light having a wavelength band between about 430 nm and about 470 nm or ultraviolet rays having a wavelength band between about 300 nm and 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 wavelength conversion member 400 is interposed between the light emitting diodes 300 and the light guide plate 200. The wavelength conversion member 400 is attached to the side surface of the light guide plate 200. In more detail, the wavelength conversion member 400 is attached to the incident surface of the light guide plate 200. In addition, the wavelength conversion member 400 may be attached to the light emitting diodes 300.

The wavelength conversion member 400 receives light emitted from the light emitting diodes 300 to convert wavelengths. For example, the wavelength conversion member 400 may convert blue light emitted from the light emitting diodes 300 into green light and red light. That is, the wavelength conversion member 400 converts a part of the blue light into green light having a wavelength band between about 520 nm and about 560 nm, and another part of the blue light has a wavelength band between about 630 nm and about 660 nm. Can be converted to red light.

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

Accordingly, the light passing through the wavelength conversion member 400 and the light converted by the wavelength conversion member 400 may 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 to 5, the wavelength conversion member 400 may include a tube 410, a seal 420, a plurality of wavelength conversion particles 430, a host 440, and a reflector 460. It includes.

The tube 410 accommodates the seal 420, the wavelength converting particles 430, and the host 440. That is, the tube 410 is a container for receiving the seal 420, the wavelength conversion particles 430, and the host 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 includes an entrance face 411 and an exit face 412. More specifically, the outer surface of the tube 410 includes the entrance face 411 and the exit face 412. The entrance face 411 and the exit face 412 face each other.

The incident surface 411 faces the light emitting diodes 300. In more detail, the incident surface 411 is opposite to the emitting surface of the light emitting diode 300. That is, the incident surface 411 is closer to the light emitting diodes 300 than the emitting surface 412.

The exit surface 412 faces the light guide plate 200. In more detail, the exit surface 412 is opposite to the side of the light guide plate 200. That is, the emission surface 412 is closer to the light guide plate 200 than the entrance surface 411.

The entrance face 411 and the exit face 412 face each other with the host 440 therebetween. That is, the host 440 is interposed between the incident surface 411 and the exit surface 412.

In addition, the tube 410 includes an upper surface 413 and a lower surface 414. That is, the outer surface of the tube 410 includes the top surface 413 and the bottom surface 414.

An upper surface 413 of the tube 410 extends from the incident surface 411 to the exit surface 412. The lower surface 414 of the tube 410 extends from the incident surface 411 to the exit surface 412. The upper surface 413 of the tube 410 and the lower surface 414 of the tube 410 face each other. In more detail, the upper surface 413 of the tube 410 and the lower surface 414 of the tube 410 may face each other with the host 440 and the wavelength conversion particles 430 interposed therebetween.

An upper surface 413 of the tube 410 and a lower surface 414 of the tube 410 may extend in a direction in which the tube 410 extends. In addition, the entrance surface 411, the emission surface 412, the upper surface 413, and the lower surface 414 of the tube 410 may surround the host 440 and the wavelength conversion particles 430.

In addition, an upper surface 413 of the tube 410 is disposed at a higher position than the light emitting diodes 300, and a lower surface 414 of the tube 410 is disposed at a lower position than the light emitting diodes 300. Can be.

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 seal 420 is disposed inside the tube 410. The seal 420 is disposed at the end of the tube 410. The seal 420 seals the inside of the tube 410. The seal 420 may include an epoxy resin.

The wavelength converting particles 430 are disposed in the tube 410. In more detail, the wavelength conversion particles 430 are uniformly dispersed in the host 440, and the host 440 is disposed inside the tube 410.

The wavelength conversion particles 430 convert the wavelength of light emitted from the light emitting diodes 300. The wavelength converting particles 430 receive light emitted from the light emitting diodes 300 to convert wavelengths. For example, the wavelength conversion particles 430 may convert blue light emitted from the light emitting diodes 300 into green light and red light. That is, some of the wavelength converting particles 430 convert the blue light into green light having a wavelength band between about 520 nm and about 560 nm, and another part of the wavelength converting particles 430 converts the blue light about 630. It can be converted into red light having a wavelength band between nm and about 660 nm.

Alternatively, the wavelength conversion particles 430 may convert ultraviolet light emitted from the light emitting diodes 300 into blue light, green light, and red light. That is, some of the wavelength converting particles 430 convert the ultraviolet light into blue light having a wavelength band of about 430 nm to about 470 nm, and another of the wavelength converting particles 430 converts the ultraviolet light to about 520. It can be converted into green light having a wavelength band between nm and about 560 nm. In addition, another portion of the wavelength conversion particles 430 may convert the ultraviolet light into red light having a wavelength band between about 630 nm and about 660 nm.

That is, when the light emitting diodes 300 are blue light emitting diodes for generating blue light, wavelength converting particles 430 for converting blue light into green light and red light may be used. Alternatively, when the light emitting diodes 300 are UV light emitting diodes that generate ultraviolet rays, wavelength converting particles 430 for converting ultraviolet rays into blue light, green light, and red light may be used.

The wavelength converting particles 430 may be a plurality of quantum dots (QDs). The quantum dot may include a core nanocrystal and a shell nanocrystal surrounding the core nanocrystal. 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. In addition, 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 the light emitted from the quantum dot can be adjusted according to the size of the quantum dot. 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 host 440 surrounds the wavelength conversion particles 430. That is, the host 440 uniformly disperses the wavelength conversion particles 430 therein. The host 440 may be comprised of a polymer. The host 440 is transparent. That is, the host 440 may be formed of a transparent polymer.

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

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

The reflector 460 is disposed on an outer surface of the tube 410. In more detail, the reflector 460 is coated on the surface of the tube 410. The reflector 460 may cover a portion of the outer surface of the tube 410 and may expose a portion.

The reflector 460 may be formed of a material having a high reflectance. Examples of the material used as the reflector 460 include a metal such as silver (Ag) or aluminum (Al). The reflector 460 may have a thickness of about 0.5 μm to about 10 μm.

In addition, the reflector 460 may have a high thermal conductivity. Accordingly, the reflector 460 may easily emit heat generated from the light emitting diodes 300. The reflector 460 includes a first reflector 461, a second reflector 462, and a third reflector 463.

The first reflecting portion 461 is disposed on an outer surface of the tube 410. In more detail, the first reflecting unit 461 is disposed on the incident surface 411. The first reflector 461 is disposed between the tube 410 and the light emitting diodes 300. In more detail, the first reflecting portion 461 is coated on the incident surface 411.

The first reflector 461 includes open regions OR corresponding to the light emitting diodes 300, respectively. Corresponding to the exit surfaces of the light emitting diodes 300 in the open areas OR, respectively. Areas of the open areas OR may be larger than areas of the emission surface of the light emitting diodes 300. The open regions OR expose the incident surface 411 of the tube 410. That is, the open regions OR penetrate the first reflecting portion 461.

The second reflector 462 is disposed on an outer surface of the tube 410. In more detail, the second reflector 462 is disposed on the top surface 413 of the tube 410. In more detail, the second reflector 462 is coated on the top surface 413 of the tube 410. The second reflector 462 may cover the entire upper surface 413 of the tube 410.

The third reflector 463 is disposed on an outer surface of the tube 410. In more detail, the third reflector 463 is disposed on the bottom surface 414 of the tube 410. In more detail, the third reflector 463 is coated on the bottom surface 414 of the tube 410. The third reflector 463 may cover the entire lower surface 414 of the tube 410.

The first reflecting unit 461, the second reflecting unit 462, and the third reflecting unit 463 may be integrally formed. Alternatively, the first reflector 461, the second reflector 462, and the third reflector 463 may be formed of different materials.

The reflector 460 reflects light emitted from the host 440 and the tube 410 upwards, downwards, or toward the light emitting diodes 300. Accordingly, light leaking from the wavelength conversion member 400 may be reduced by the reflector 460. That is, the amount of light incident from the wavelength conversion member 400 to the light guide plate 200 may be increased by the reflector 460.

The wavelength conversion member 400 is attached to the light emitting diodes 300. A first adhesive layer 101 is interposed between the wavelength conversion member 400 and the light emitting diodes 300. The wavelength conversion member 400 may be attached to an emission surface of the light emitting diode 300 through the first adhesive layer 101.

In addition, the wavelength conversion member 400 is adhered to the light guide plate 200. A second adhesive layer 201 is interposed between the wavelength conversion member 400 and the light guide plate 200, and the wavelength conversion member 400 enters the light guide plate 200 through the second adhesive layer 201. Adheres to cotton.

By the first adhesive layer 101 and the second adhesive layer 201, the light emitted from the light emitting diodes 300 does not pass through the air layer, but passes through the wavelength conversion member 400, thereby providing the light guide plate 200. May be incident on

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 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.

6 to 8 are views illustrating a process of manufacturing the wavelength conversion member 400 according to the embodiment. The wavelength conversion member 400 may be formed by the following method.

Referring to FIG. 6, a plurality of tubes 410 are in contact with each other. In this case, the incident surface 411 and the exit surface 412 of the tubes 410 are in contact with each other. The tubes 410 may be in close contact with each other. In addition, the first support member 41 and the second support member 42 may be in contact with the tubes 410 disposed at the outermost of the tubes 410, respectively.

Referring to FIG. 7, metals such as silver or aluminum are deposited on the top and bottom surfaces 413 and 414 of the tubes 410. The metal may be deposited by a sputtering process. Accordingly, the second reflector 462 and the third reflector 463 may be formed on the upper surface 413 and the lower surface 414 of the tubes 410, respectively.

Referring to FIG. 8, metal such as silver or aluminum is deposited on the incident surface 411 of the tubes 410. In this case, the metal is deposited through the mask 50. Accordingly, a first reflecting portion 461 is formed on the incident surface 411 of the tubes 410. The mask 50 may prevent the metal from being deposited in a region corresponding to the light emitting diode 300 so that open regions OR are formed.

Thereafter, the wavelength conversion particles 430 are uniformly dispersed in the resin composition. The said resin composition is transparent. The resin composition may have photocurability.

Thereafter, the inside of the tube 410 is depressurized, the inlet of the tube 410 is immersed in the resin composition in which the wavelength conversion particles 430 are dispersed, and the pressure around it is raised. Accordingly, the resin composition in which the wavelength conversion particles 430 are dispersed is introduced into the tube 410.

A portion of the resin composition introduced into the tube 410 is removed, and the inlet portion of the tube 410 is empty. Thereafter, the resin composition introduced into the tube 410 is cured by ultraviolet rays, and the host 440 is formed.

An epoxy resin composition flows into the inlet portion of the tube 410. Thereafter, the introduced epoxy resin composition is cured, and the sealing part 420 is formed. The process of forming the seal 420 is performed in a nitrogen atmosphere. Accordingly, an air layer 450 including nitrogen may be formed between the seal 420 and the host 440.

After the reflective part 460 is formed in the tube 410, the resin composition is described as being injected into the tube 410, but the present invention is not limited thereto. That is, after the host 440 and the sealing part 420 are formed in the tube 410, the reflecting part 460 may be formed on the outer surface of the tube 410.

In this manner, the wavelength conversion member 400 may be formed.

As described above, the reflector 460 reflects the light passing through the wavelength conversion member 400 and enters the light guide plate 200. In addition, the reflector 460 reflects the light converted by the wavelength conversion member 400 and enters the light guide plate 200.

Accordingly, the reflector 460 prevents light from leaking upwards, downwards, and / or toward the light emitting diodes 300, and causes more light to enter the light guide plate 200. Thus, the liquid crystal display according to the embodiment may have improved luminance.

In addition, the reflector 460 may be formed of a metal having high thermal conductivity. Accordingly, the reflector 460 may effectively transfer heat generated from the light emitting diodes 300 to emit the heat.

Therefore, the liquid crystal display according to the embodiment may have improved durability and reliability.

9 is a perspective view illustrating a light emitting diode, a wavelength conversion member, and a light guide plate according to the second embodiment. 10 is a cross-sectional view illustrating a cross section of the light emitting diode, the wavelength conversion member, and the light guide plate. 11 is a view illustrating a process of manufacturing the wavelength conversion member according to the second embodiment. In this embodiment, referring to the description of the foregoing embodiment, the wavelength conversion member will be further described. That is, the description of the foregoing embodiment may be essentially combined with the description of the present embodiment except for the changed part.

9 and 10, the upper surface 413 and the lower surface 414 of the tube 410 are inclined with respect to the entrance surface 411 and the exit surface 412 of the tube 410. In particular, the distance between the upper surface 413 of the tube 410 and the lower surface 414 of the tube 410 may become larger as the distance from the incident surface 411. Accordingly, the width of the incident surface 411 may be smaller than the width of the exit surface 412.

The reflector 460 is disposed on the upper surface 413 and the lower surface 414. Accordingly, the reflector 460 may be inclined with respect to the incident surface 411 of the tube 410.

Referring to FIG. 11, entrance surfaces of tubes adjacent to each other are in contact with each other, and exit surfaces of tubes adjacent to each other are in contact with each other. That is, the entrance surfaces are in contact with each other, and the emission surfaces are in contact with each other.

Subsequently, metal is deposited on the upper surface 413 and the lower surface 414 of the tube 410 to form a second reflector 462 and a third reflector 463. Thereafter, the host 440 and the seal 420 may be formed.

The wavelength conversion member 400 has a radial structure, and the reflector 460 is formed on an inclined surface. Accordingly, the wavelength conversion member 400 may effectively inject light into the light guide plate 200, and the liquid crystal display according to the present exemplary embodiment may have improved luminance and luminance uniformity.

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 may be combined or modified with respect to other embodiments by those 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 exemplary 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 (11)

Light source; And
A wavelength conversion member disposed adjacent to the light source,
The wavelength conversion member
Wavelength converting particles for converting wavelengths of light emitted from the light source;
A tube containing the wavelength conversion particles; And
And a reflector formed on at least one surface of the tube. The display device of claim 1, wherein the reflector comprises a metal. The light source of claim 1, further comprising: a light guide plate on which light emitted from the light source is incident; And
The display panel may further include a display panel on the light guide plate.
The tube is
A first surface opposite the light source;
A second surface facing the light guide plate;
A third surface extending from the first surface to the second surface; And
And a fourth surface extending from the first surface to the second surface and opposing the third surface. The display device of claim 3, wherein the reflector is disposed on the third and fourth surfaces. The method of claim 3, wherein the third surface and the fourth surface is inclined with respect to the first surface,
The display unit is disposed on the third surface and the fourth surface. The method of claim 3, wherein the reflecting portion is disposed on the first surface,
The reflector includes an open area exposing the first surface,
And the open area corresponds to the light source. The display device of claim 1, wherein the reflector comprises silver or aluminum. Forming a reflector in the plurality of tubes,
Disposing a plurality of wavelength converting particles in the tubes. The method of claim 8, wherein the tubes are brought into contact with each other,
In the state in which the tubes are in contact with the metal, the method of manufacturing a wavelength conversion member is formed by depositing a metal. 10. The method of claim 9, wherein the tubes
First and second sides opposing each other;
A third face extending from the first face to the second face; And
A fourth face extending from the first face to the second face,
The third and fourth surfaces are inclined with respect to the first surface,
A method of manufacturing a wavelength conversion member in which first surfaces of tubes adjacent to each other are in contact with each other, and second surfaces of tubes adjacent to each other are in contact with each other. The method of claim 8, wherein a mask is disposed in the tubes,
The metal is deposited on the tubes through the mask, the method of manufacturing a wavelength conversion member is formed.

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