KR101273198B1 - Display device - Google Patents

Abstract

A display device is disclosed. The display device includes a light guide plate; A light source disposed on an incident surface of the light guide plate; A light conversion member interposed between the light source and the light guide plate; And an adhesive part interposed between the light conversion member and the light guide plate, wherein the light guide plate comprises: a first overflow preventing wall protruding from an incident surface of the light guide plate; And a second overflow prevention wall protruding from the incident surface of the light guide plate, spaced apart from the first overflow prevention wall, and facing the first overflow prevention wall.

Description

Display device {DISPLAY DEVICE}

The embodiment relates to a display device.

Recently, a flat panel display such as a liquid crystal display (LCD), a plasma display panel (PDP), or an organic light emitting diode (OLED) has been developed in place of the conventional CRT.

The liquid crystal display device includes a thin film transistor substrate, a color filter substrate, and a liquid crystal display panel in which liquid crystal is injected between both substrates. Since the liquid crystal display panel is a non-light emitting device, a backlight unit for supplying light to the bottom surface of the thin film transistor substrate is positioned. Light transmitted from the backlight unit is adjusted according to the arrangement of liquid crystals.

The backlight unit is divided into edge type and direct type according to the position of the light source. The edge type is a structure in which a light source is provided on a side surface of the light guide plate.

The direct type is a structure that is mainly developed with the size of a liquid crystal display device being enlarged. One or more light sources are arranged on the lower surface of the liquid crystal display panel to supply light to the liquid crystal display panel.

The direct-type backlight unit has advantages in that it can utilize a larger number of light sources than the edge-type backlight unit and can secure a high luminance, but has a disadvantage that the thickness becomes thicker than the edge type in order to ensure uniformity of brightness have.

In order to overcome this problem, a quantum dot bar in which a plurality of quantum dots dispersed in a red wavelength or a green wavelength is dispersed is provided in front of a blue LED emitting blue light constituting a backlight unit, Thus, light mixed with blue light, red light and green light by a plurality of quantum dots dispersed in the quantum dot bar is incident on the light guide plate to provide white light.

At this time, when white light is provided to the light guide plate using the quantum dot bar, high color reproduction can be realized.

The backlight unit may include an FPCB (Flexible Printed Circuits Board) for transmitting and supplying LEDs and signals to one side of a blue LED emitting blue light, and an adhesive member may be further provided on the lower surface of the FPCB.

As such, when a light emitted from a blue LED is leaked, a display device for displaying an image in various forms using white light provided to the light guide plate through the quantum dot bar is widely used.

A display device to which such a quantum dot is applied is disclosed in Korean Patent Laid-Open Publication No. 10-2011-0068110.

Embodiments provide a display device having improved optical characteristics and which can be easily manufactured.

In one embodiment, a display device includes: a light guide plate; A light source disposed on an incident surface of the light guide plate; A light conversion member interposed between the light source and the light guide plate; And an adhesive part interposed between the light conversion member and the light guide plate, wherein the light guide plate comprises: a first overflow preventing wall protruding from an incident surface of the light guide plate; And a second overflow prevention wall protruding from the incident surface of the light guide plate, spaced apart from the first overflow prevention wall, and facing the first overflow prevention wall.

The display device according to the embodiment includes a light guide plate on which the first overflow prevention wall and the second overflow prevention wall are formed. Accordingly, the first overflow prevention wall and the second overflow prevention wall may prevent the resin composition from overflowing between the light conversion member and the light guide plate in the process of forming the adhesive part.

In addition, the first overflow prevention wall and the second overflow prevention wall may use a flow portion to allow the resin composition to flow in a desired direction. Accordingly, the first overflow prevention wall and the second overflow prevention wall may allow the resin composition to flow to a portion where the light source is not disposed.

Accordingly, the display device according to the exemplary embodiment may prevent the resin composition from being cured at an undesired portion of the light guide plate through the first overflow prevention wall and the second overflow prevention wall.

Thus, the display device according to the embodiment can eliminate luminance unevenness caused by the overflowing resin composition and can have improved luminance uniformity.

In addition, the display device according to the embodiment may sufficiently use the resin composition in the process of forming the adhesive part. Therefore, the display device according to the embodiment can be easily manufactured.

1 is an exploded perspective view illustrating a liquid crystal display according to an embodiment.
FIG. 2 is a cross-sectional view showing a section cut along AA 'in FIG. 1; FIG.
3 is a perspective view illustrating light emitting diodes, a light conversion member, and a light guide plate according to an embodiment.
4 is a plan view illustrating light emitting diodes, a light conversion member, and a light guide plate according to an embodiment.
FIG. 5 is a cross-sectional view taken along the line BB ′ of FIG. 4.
6 is a cross-sectional view illustrating a cross section taken along CC ′ in FIG. 4.
7 is a cross-sectional view illustrating a cross section of the light emitting diodes, the light conversion member, and the light guide plate in a horizontal direction.
8 is a perspective view illustrating a light conversion member according to an embodiment.
9 is a cross-sectional view illustrating a cross section taken along the line DD ′ in FIG. 8.

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 an 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 light emitting diodes, a light conversion member, and a light guide plate according to an embodiment. 4 is a plan view illustrating light emitting diodes, a light conversion member, and a light guide plate according to an embodiment. FIG. 5 is a cross-sectional view illustrating a cross section taken along line BB ′ in FIG. 4. 6 is a cross-sectional view taken along the line CC ′ in FIG. 4. 7 is a cross-sectional view illustrating a cross section of the light emitting diodes, the light conversion member, and the light guide plate in a horizontal direction. 8 is a perspective view illustrating a light conversion member according to an embodiment. 9 is a cross-sectional view illustrating a cross section taken along line D-D` in FIG. 8.

1 to 9, the liquid crystal display according to the 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, light emitting diodes 300, a light conversion member 400, a first adhesive part 700, and a second adhesive part 800. ), A plurality of optical sheets 500 and a flexible printed circuit board (FPCB) 600.

The reflective sheet 100 reflects light generated from the light emitting diodes 300 upward.

The light guide plate 200 is disposed on the reflective sheet 100 and receives light emitted from the light emitting diodes 300 and reflects upward through reflection, refraction, and scattering.

The light guide plate 200 includes an incident surface 201 facing the light emitting diodes 300. That is, the side facing the light emitting diodes 300 of the side surfaces of the light guide plate 200 is the incident surface 201. The incident surface 201 faces the light conversion member 400.

Referring to FIG. 7, the incident surface 201 is a portion (hereinafter, ridge 202) which is raised toward the light conversion member 400 and a portion which is recessed from the light conversion member 400 (hereinafter, recessed). Section 203).

The ridges 202 correspond to the light emitting diodes 300, respectively. That is, the light emitting diodes 300 are disposed to correspond to the ridges 202, respectively.

The depressions 203 correspond to regions between the light emitting diodes 300, respectively. That is, the light emitting diodes 300 are disposed between the depressions 203, respectively.

The ridge 202 and the depression 203 includes a curved surface. In more detail, the ridge 202 and the depression 203 may be formed in a curved surface as a whole. In more detail, the incident surface 201 may be formed as a curved surface as a whole.

The depression 203 may be a groove formed in the incident surface 201. That is, grooves may be formed in regions corresponding to the light emitting diodes 300 among the incident surfaces 201.

As shown in FIGS. 2 to 6, the light guide plate 200 includes a first overflow preventing wall 210 and a second overflow preventing wall 220.

The first overflow prevention wall 210 and the second overflow prevention wall 220 protrude from the incident surface 201 toward the light emitting diodes 300. In addition, the first overflow prevention wall 210 and the second overflow prevention wall 220 face each other. The first overflow prevention wall 210 and the second overflow prevention wall 220 are spaced apart from each other.

The first overflow prevention wall 210 and the second overflow prevention wall 220 are disposed at an outer portion of the incident surface 201. In detail, the first overflow preventing wall 210 is disposed at a portion where the incident surface 201 and the lower surface of the light guide plate 200 meet. In addition, the second overflow preventing wall 220 is disposed at a portion where the incident surface 201 and the upper surface of the light guide plate 200 meet.

The first overflow prevention wall 210 includes a plurality of first bank parts 211 and a plurality of first flow parts 212.

The first bank parts 211 and the first flow parts 212 are alternately disposed. The distance between each first bank portion 211 and the light conversion member 400 is smaller than the distance between each first flow portion 212 and the light conversion member 400. Accordingly, a space may be formed between the light conversion member 400 and each of the first flow units 212. In addition, a space may be hardly formed between each of the first bank parts 211 and the light conversion member 400.

In addition, the first bank parts 211 may correspond to the light emitting diodes 300, respectively. In addition, the first flow units 212 may be disposed between the light emitting diodes 300, respectively.

The second overflow preventing wall 220 includes a plurality of second bank portions 221 and a plurality of second flow portions 222.

The second bank portions 221 and the second flow portions 222 are alternately arranged. The distance between each second bank portion 221 and the light conversion member 400 is smaller than the distance between each second flow portion 222 and the light conversion member 400. Accordingly, a space may be formed between the light conversion member 400 and each of the second flow parts 222. In addition, a space may be hardly formed between each of the second bank parts 221 and the light conversion member 400.

In addition, the second bank units 221 may correspond to the light emitting diodes 300, respectively. In addition, the second flow units 222 may be disposed between the light emitting diodes 300, respectively.

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 201 of the light guide plate 200.

The light emitting diodes 300 are light sources for generating light. In more detail, the light emitting diodes 300 emit light toward the light conversion member 400.

The light emitting diodes 300 generate first light. For example, the first light may be blue light. That is, the light emitting diodes 300 may be blue light emitting diodes 300 that generate blue light. The first light may be primarily blue light having a wavelength band between about 430 nm and about 470 nm. In addition, the light emitting diodes 300 may generate ultraviolet rays.

The light emitting diodes 300 are mounted on the flexible printed circuit board 600. The light emitting diodes 300 are disposed under the flexible printed circuit board 600. The light emitting diodes 300 are driven by receiving a driving signal through the flexible printed circuit board 600.

The light conversion member 400 is interposed between the light emitting diodes 300 and the light guide plate 200. The light conversion member 400 is adhered to the side surface of the light guide plate 200. In more detail, the light conversion member 400 is attached to the incident surface 201 of the light guide plate 200. In addition, the light conversion member 400 is disposed on the incident surface 201 of the light guide plate 200. In more detail, the light conversion member 400 may be attached to the light emitting diodes 300.

The light conversion member 400 receives the light emitted from the light emitting diodes 300 and converts the wavelength. For example, the light conversion member 400 may convert the first light emitted from the light emitting diodes 300 into a second light and a third light.

Here, the second light may be red light, and the third light may be green light. That is, the photo-conversion member 400 may convert a portion of the first light to red light having a wavelength band between about 630 nm and about 660 nm, and another portion of the first light at about 520 nm to about 560 nm Green light having a wavelength band between the wavelengths.

Accordingly, the first light passing through the light conversion member 400 and the second light and the third light converted by the light conversion member 400 may be mixed with each other to form white light. That is, the first light, the second light, and the third light may be mixed, and white light may be incident on the light guide plate 200.

As shown in FIGS. 2, 8, and 9, the light conversion member 400 includes a tube 410, a seal 420, a plurality of light conversion particles 430, and a host 440. .

The tube 410 accommodates the seal 420, the light conversion particles 430, and the host 440. That is, the tube 410 is a receiving portion for receiving the seal 420, the light conversion particles 430, and the host 440. In addition, the tube 410 has a shape elongated in one direction.

The tube 410 may have a pipe shape. That is, the cross section perpendicular to the longitudinal direction of the tube 410 may have a trapezoidal shape. In addition, the width of the tube 410 may be about 0.2 mm, and the height of the tube 410 may be about 0.6 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. In more detail, the tube 410 may be formed of glass. 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 photo-conversion particles 430 are disposed inside the tube 410. More specifically, the photoconversion particles 430 are uniformly dispersed in the host 440, and the host 440 is disposed inside the tube 410.

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

Alternatively, the light 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 light 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 light conversion particles 430 It can be converted into green light having a wavelength range of 520 nm to 560 nm. Further, another part of the light conversion particles 430 may convert the ultraviolet light into red light having a wavelength band of about 630 nm to about 660 nm.

That is, when the light emitting diodes 300 are blue light emitting diodes 300 that generate blue light, light conversion particles 430 that convert blue light into green light and red light may be used. Alternatively, when the light emitting diodes 300 are UV light emitting diodes 300 that generate ultraviolet light, light conversion particles 430 that convert ultraviolet light into blue light, green light, and red light may be used. .

The light conversion particles 430 may be a quantum dot (QD). 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 includes a semiconductor compound. In more detail, at least one material of Group II compound semiconductor, Group III compound semiconductor, Group V compound semiconductor, and Group VI compound semiconductor may be included. 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 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 photo-conversion particles 430. That is, the host 440 uniformly disperses the light 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 light conversion member 400 may be formed by the following method.

First, the light conversion particles 430 are uniformly dispersed in a 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 light conversion particles 430 are dispersed, and the pressure around it is raised. Accordingly, the resin composition in which the light conversion particles 430 are dispersed is introduced into the tube 410.

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

Thereafter, the resin composition introduced into the tube 410 is cured by ultraviolet rays, and the host 440 is formed.

Thereafter, the epoxy resin composition is introduced 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.

The light conversion member 400 may be in close contact with the light emitting diodes 300 by the first adhesive part 700. The first adhesive part 700 is attached to the emission surface of the light emitting diodes 300 and the outer surface of the light conversion member 400.

In addition, the light conversion member 400 may be in close contact with the light guide plate 200 by the second adhesive part 800. The second adhesive part 800 is adhered to the incident surface 201 of the light guide plate 200 and the outer surface of the light conversion member 400.

The second adhesive part 800 is in close contact with the incident surface 201. In addition, the second adhesive part 800 is disposed between the first overflow prevention wall 210 and the second overflow prevention wall 220. The second adhesive part 800 may be disposed on the top and bottom surfaces of the light guide plate 200. In more detail, a part 810 of the second adhesive part 800 may extend from the incident surface 201 to the lower surface of the light guide plate 200 through the first flow parts 212. In addition, a part 820 of the second adhesive part 800 may extend from the incident surface 201 to the top surface of the light guide plate 200 through the second flow parts 222.

In this case, since the first flow parts 212 and the second flow parts 222 are disposed to correspond to the light emitting diodes 300, the second adhesive part 800 of the light guide plate 200 may be formed. The portion disposed on the lower surface and the portion disposed on the upper surface of the light guide plate 200 have little influence on the optical characteristics of the liquid crystal display according to the exemplary embodiment.

The second adhesive part 800 may be formed by the following process.

First, as described above, the light conversion member 400 is formed. Thereafter, a resin composition is coated on the incident surface 201 of the light guide plate 200. Epoxy resin, acrylic resin, etc. are mentioned as an example of the said resin composition.

Thereafter, the light conversion member 400 is adhered to the incident surface 201 of the light guide plate 200. In this case, the resin composition coated on the incident surface 201 of the light guide plate 200 may be affected by the pressure of the light conversion member 400 and the light guide plate 200. Through the unit 222, the upper and lower surfaces of the light guide plate 200 may overflow.

Thereafter, a resin composition is coated on the emission surfaces of the light emitting diodes 300, and the light emitting diodes 300 are temporarily bonded to the light conversion member 400.

Thereafter, the resin composition between the light emitting diodes 300 and the light conversion member 400, the resin composition between the light conversion member 400 and the light guide plate 200, and the first flow portion 212 and the The resin composition overflowed through the second flow portion is cured by heat and / or light. Accordingly, the first adhesive part 700 and the second adhesive part 800 are formed.

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 diodes 300. The light emitting diodes 300 may be mounted. The flexible printed circuit board 600 is a flexible printed circuit board 600 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 30 is a display panel 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 display device according to the exemplary embodiment includes the light guide plate 200 on which the first overflow prevention wall 210 and the second overflow prevention wall 220 are formed. Accordingly, the first overflow prevention wall 210 and the second overflow prevention wall 220 are filled with a resin composition between the light conversion member 400 and the light guide plate 200 in the process of forming the adhesive part. Can be prevented.

In addition, the first overflow preventing wall 210 and the second overflow preventing wall 220 may flow the resin composition in a desired direction using a first flow part 212 and the second flow part 222. You can do that. Accordingly, the first overflow prevention wall 210 and the second overflow prevention wall 220 may allow the resin composition to flow to a portion where the light emitting diodes 300 are not disposed.

That is, the first overflow prevention wall 210 and the second overflow prevention wall 220 may prevent the resin composition from overflowing or flowing in a desired direction.

Accordingly, the display device according to the embodiment may prevent the resin composition from being cured at an undesired portion of the light guide plate 200 through the first overflow prevention wall 210 and the second overflow prevention wall 220. Can be.

Thus, the display device according to the embodiment can eliminate luminance unevenness caused by the overflowing resin composition and can have improved luminance uniformity.

In addition, the display device according to the embodiment may sufficiently use the resin composition in the process of forming the second adhesive part 800. Therefore, the display device according to the embodiment can be easily manufactured.

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 each embodiment 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 (9)

Light guide plate;
A light source disposed on an incident surface of the light guide plate;
A light conversion member interposed between the light source and the light guide plate; And
An adhesive part interposed between the light conversion member and the light guide plate;
The light-
A first overflow preventing wall protruding from an incident surface of the light guide plate; And
And a second overflow prevention wall protruding from the incident surface of the light guide plate, spaced apart from the first overflow prevention wall, and facing the first overflow prevention wall. The display device of claim 1, wherein the adhesive part is disposed between the first overflow prevention wall and the second overflow prevention wall. The wall of claim 1, wherein each of the first overflow barrier and the second overflow barrier is
A bank portion and a flow portion disposed alternately with each other,
And a distance between the bank portion and the light conversion member is smaller than a distance between the flow portion and the light conversion member. The method of claim 3, wherein the light source comprises a plurality of light emitting diodes,
The bank unit corresponds to each of the light emitting diodes,
And the flow units are disposed between the light emitting diodes. The display panel of claim 3, further comprising a display panel on the light guide plate.
And the adhesive part extends from the incident surface to an upper surface of the light guide plate through the flow part. The display device of claim 4, wherein portions of the incident surfaces corresponding to the light emitting diodes are raised toward the light emitting diodes. The display device of claim 6, wherein a portion of the incident surface corresponding to the light emitting diodes is recessed. The display device of claim 7, wherein the raised portion and the recessed portion of the incident surface include a curved surface. The method of claim 1, wherein the light source comprises a plurality of light emitting diodes,
And a plurality of grooves corresponding to the light emitting diodes, respectively, on the incident surface.

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