KR20210141846A - Light route control member and display having the same - Google Patents

Abstract

According to the embodiment of the present invention, a light path control member includes: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed under the second substrate; and a light conversion unit disposed between the first electrode and the second electrode. The light conversion unit includes: a first barrier rib layer including a first base layer and a plurality of first barrier rib portions on the first base layer; a second barrier rib layer disposed on the first barrier rib layer and including a second base layer and a plurality of second barrier rib portions on the second base layer; a plurality of receiving portions between the first barrier rib portion and the second barrier rib portion; and a plurality of receiving portions between the first barrier rib portion and the second barrier rib portion, wherein the first barrier rib portion and the second barrier rib portion are alternately crossed. The present invention provides the light path control member capable of implementing various shapes of the receiving portion.

Description

A light path control member and a display device including the same

Embodiments relate to a light path control member and a display device including the same.

The light-shielding film blocks the transmission of light from the light source. It is attached to the front of the display panel, which is a display device used for mobile phones, laptops, tablet PCs, vehicle navigation, and vehicle touch, and the angle of incidence of light when the display transmits the screen. Accordingly, it is used for the purpose of expressing clear image quality at the required viewing angle by adjusting the viewing angle of the light.

In addition, the light-shielding film is used for windows of vehicles or buildings to partially shield external light to prevent glare or to prevent the inside from being seen from the outside.

That is, the light blocking film may be a light path control member that controls a movement path of light to block light in a specific direction and transmit light in a specific direction. Accordingly, it is possible to control the viewing angle of the user by controlling the transmission angle of light by the light-shielding film.

On the other hand, such a light-shielding film is a light-shielding film that can always control the viewing angle regardless of the surrounding environment or the user's environment, and a switchable light-shielding film that allows the user to turn on/off the viewing angle control according to the surrounding environment or the user's environment. can be distinguished.

Such a switchable light blocking film can be implemented by filling the inside of the pattern part with particles that can move according to the application of a voltage and a dispersion liquid dispersing them, and the pattern part is changed into a light transmitting part and a light blocking part by dispersion and aggregation of the particles.

On the other hand, since the transmittance of the pattern portion is changed according to the application of voltage, as the area of the pattern portion increases, the overall light transmittance of the light-shielding film is reduced, thereby reducing visibility to the user.

In addition, when the pattern portion is formed in various sizes and shapes according to the usage environment of the light-shielding film, there is a problem in that the manufacturing process of the light-shielding film takes a long time.

Accordingly, a light path control member having a new structure capable of solving the above problems is required.

The embodiment is intended to provide a light path control member that can be easily manufactured and can implement various shapes of the accommodating part.

An optical path control member according to an embodiment includes: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed under the second substrate; and a light conversion unit disposed between the first electrode and the second electrode, wherein the light conversion unit includes: a first barrier rib layer including a first base layer and a plurality of first barrier rib portions on the first base layer; a second barrier rib layer disposed on the first barrier rib layer and including a second base layer and a plurality of second barrier rib portions on the second base layer; and a plurality of accommodating portions between the first and second barrier ribs, wherein the first and second barrier ribs are alternately disposed.

The light path control member according to the embodiment may reduce the size of the accommodating part in which the light conversion material is accommodated.

In detail, in the light path control member according to the embodiment, since the two barrier rib layers, that is, the first barrier rib layer and the second barrier rib layer, are alternately disposed, thereby forming a receiving portion between the first and second barrier ribs, It is possible to easily form the accommodating portion having a smaller size.

Accordingly, the size of the accommodating portion can be reduced and the size of the barrier rib portion, which is a region through which light is transmitted, can be relatively increased, so that the luminance and visibility of the light path control member can be improved.

In addition, the light path control member according to the embodiment may have various shapes and arrangements of the accommodating part.

In detail, in the light path control member according to the embodiment, the size, shape, and extension direction of two barrier rib layers, that is, the first barrier rib layer and the second barrier rib layer, are formed in various ways, and they are alternately disposed, whereby the first barrier rib layer Since the accommodating part is formed between the part and the second partition wall part, the shape of the accommodating part can be implemented in various shapes.

Accordingly, the light path control member according to the embodiment may implement various shapes and arrangements of the receiving unit according to various use environments.

1 and 2 are views illustrating a perspective view of a light path control member according to an embodiment.
3 and 4 are perspective views of a first substrate, a first electrode, a second substrate, and a second electrode of a light path control member according to an embodiment, respectively.
5 is a view showing a top view of a first barrier rib layer according to the first embodiment.
6 is a view showing a cross-sectional view of a first barrier rib layer according to the first embodiment.
7 is a view showing a top view of a second barrier rib layer according to the first embodiment.
8 is a view showing a cross-sectional view of the second barrier rib layer cut according to the first embodiment.
9 is a view showing a top view of a first barrier rib layer and a second barrier rib layer bonded to each other according to an embodiment according to the first embodiment.
FIG. 10 is a view showing a cross-sectional view of FIG. 9 .
11 is a view showing a top view of the first partition wall layer according to the second embodiment.
12 is a view showing a top view of a second barrier rib layer according to the second embodiment.
13 is a diagram illustrating a top view of a first barrier rib layer and a second barrier rib layer bonded to each other according to the second embodiment.
14 and 15 are views illustrating cross-sectional views taken along area AA′ of FIG. 1 .
16 to 20 are views illustrating a method of manufacturing the light path control member according to the embodiment.
21 is a cross-sectional view of a display device to which a light path control member according to an exemplary embodiment is applied.
22 and 24 are views for explaining an embodiment of a display device to which the light path control member according to FIG. 24 is applied.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical spirit of the present invention is not limited to some of the described embodiments, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components may be selected between embodiments. It can be combined and substituted for use.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention pertains, unless specifically defined and described explicitly. It may be interpreted as a meaning, and generally used terms such as terms defined in advance may be interpreted in consideration of the contextual meaning of the related art.

In addition, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention. In this specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as "at least one (or more than one) of A and (and) B, C", it can be combined with A, B, and C. It may contain one or more of all possible combinations.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only used to distinguish the component from other components, and are not limited to the essence, order, or order of the component by the term.

And, when it is described that a component is 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also with the component It may also include a case of 'connected', 'coupled' or 'connected' due to another element between the other elements.

In addition, when it is described as being formed or disposed on "above (above) or below (below)" of each component, the top (above) or bottom (below) is one as well as when two components are in direct contact with each other. Also includes a case in which another component as described above is formed or disposed between two components.

In addition, when expressed as “up (up) or down (down)”, it may include the meaning of not only the upward direction but also the downward direction based on one component.

Hereinafter, an optical path control member according to an embodiment will be described with reference to the drawings. The optical path control member described below relates to a switchable optical path control member that drives in various modes according to electrophoretic particles moving by application of a voltage.

1 to 4 , the light path control member according to the embodiment includes a first substrate 110 , a second substrate 120 , a first electrode 210 , a second electrode 220 , and a light conversion unit. (300) may be included.

The first substrate 110 may support the first electrode 210 . The first substrate 110 may be rigid or flexible.

Also, the first substrate 110 may be transparent. For example, the first substrate 110 may include a transparent substrate capable of transmitting light.

The first substrate 110 may include glass, plastic, or a flexible polymer film. For example, the flexible polymer film is polyethylene terephthalate (PET), polycarbonate (Polycabonate, PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylic Polymethyl Methacrylate (PMMA), Polyethylene Naphthalate (PEN), Polyether Sulfone (PES), Cyclic Olefin Copolymer (COC), TAC (Triacetylcellulose) film, Polyvinyl alcohol ( Polyvinyl alcohol, PVA) film, polyimide (Polyimide, PI) film, may be made of any one of polystyrene (Polystyrene, PS), this is only one example, but is not necessarily limited thereto.

In addition, the first substrate 110 may be a flexible substrate having a flexible characteristic.

Also, the first substrate 110 may be a curved or bent substrate. That is, the optical path control member including the first substrate 110 may also be formed to have flexible, curved, or bent characteristics. For this reason, the light path control member according to the embodiment may be changed into various designs.

The first substrate 110 may extend in a first direction 1A, a second direction 2A, and a third direction 3A.

In detail, the first substrate 110 extends in a first direction 1A corresponding to the length or width direction of the first substrate 110 and in a direction different from the first direction 1A, and the first substrate A second direction 2A corresponding to the length or width direction of 110 , and a direction different from the first direction 1A and the second direction 2A, the thickness direction of the first substrate 110 . and a third direction 3A corresponding to .

For example, the first direction 1A may be defined as a longitudinal direction of the first substrate 110 , and the second direction 2A may be a first substrate ( 2A) perpendicular to the first direction 1A. 110 , and the third direction 3A may be defined as a thickness direction of the first substrate 110 . Alternatively, the first direction 1A may be defined as the first substrate 110 . ), the second direction 2A may be defined as a longitudinal direction of the first substrate 110 perpendicular to the first direction 1A, and the third direction 3A. may be defined in the thickness direction of the first substrate 110 .

Hereinafter, for convenience of description, the first direction 1A is the longitudinal direction of the first substrate 110 , the second direction 2A is the width direction of the first substrate 110 , and the second direction 1A is the width direction of the first substrate 110 . The three directions 3A will be described as the thickness direction of the first substrate 110 .

The first electrode 210 may be disposed on one surface of the first substrate 110 . In detail, the first electrode 210 may be disposed on the upper surface of the first substrate 110 . That is, the first electrode 210 may be disposed between the first substrate 110 and the second substrate 120 .

The first electrode 210 may include a transparent conductive material. For example, the first electrode 210 may include a conductive material having a light transmittance of about 80% or more. For example, the first electrode 210 may include indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, It may include a metal oxide such as titanium oxide.

The first electrode 210 may have a thickness of about 10 nm to about 50 nm.

Alternatively, the first electrode 210 may include various metals to realize low resistance. For example, the first electrode 210 may include chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), or molybdenum (Mo). At least one of gold (Au), titanium (Ti), and alloys thereof may be included.

Referring to FIG. 3 , the first electrode 210 may be disposed on the entire surface of one surface of the first substrate 110 . In detail, the first electrode 210 may be disposed as a surface electrode on one surface of the first substrate 110 . However, the embodiment is not limited thereto, and the first electrode 210 may be formed of a plurality of pattern electrodes having a uniform pattern such as a mesh or stripe shape.

For example, the first electrode 210 may include a plurality of conductive patterns. In detail, the first electrode 210 may include a plurality of mesh lines crossing each other and a plurality of mesh openings formed by the mesh lines.

Accordingly, even if the first electrode 210 includes a metal, the first electrode is not visually recognized from the outside, so that visibility may be improved. In addition, the light transmittance is increased by the openings, so that the luminance of the light path control member according to the embodiment may be improved.

The second substrate 120 may be disposed on the first substrate 110 . In detail, the second substrate 120 may be disposed on the first electrode 210 on the first substrate 110 .

The second substrate 120 may include a material capable of transmitting light. The second substrate 120 may include a transparent material. The second substrate 120 may include the same or similar material to the first substrate 110 described above.

For example, the second substrate 120 may include glass, plastic, or a flexible polymer film. For example, the flexible polymer film is polyethylene terephthalate (PET), polycarbonate (Polycabonate, PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylic Polymethyl Methacrylate (PMMA), Polyethylene Naphthalate (PEN), Polyether Sulfone (PES), Cyclic Olefin Copolymer (COC), TAC (Triacetylcellulose) film, Polyvinyl alcohol ( Polyvinyl alcohol, PVA) film, polyimide (Polyimide, PI) film, may be made of any one of polystyrene (Polystyrene, PS), this is only one example, but is not necessarily limited thereto.

In addition, the second substrate 120 may be a flexible substrate having a flexible characteristic.

Also, the second substrate 120 may be a curved or bent substrate. That is, the optical path control member including the second substrate 120 may also be formed to have flexible, curved, or bent characteristics. For this reason, the light path control member according to the embodiment may be changed into various designs.

The second substrate 120 may also extend in the first direction 1A, the second direction 2A, and the third direction 3A in the same manner as the first substrate 110 described above.

In detail, the second substrate 120 extends in a first direction 1A corresponding to the length or width direction of the second substrate 120 and in a direction different from the first direction 1A, and the second substrate A second direction 2A corresponding to the length or width direction of 120 , and a direction different from the first direction 1A and the second direction 2A, the thickness direction of the second substrate 120 . and a third direction 3A corresponding to .

For example, the first direction 1A may be defined as a longitudinal direction of the second substrate 120 , and the second direction 2A may be a second substrate ( 2A) perpendicular to the first direction 1A. 120 may be defined in a width direction, and the third direction 3A may be defined in a thickness direction of the second substrate 120 .

Alternatively, the first direction 1A may be defined as a width direction of the second substrate 120 , and the second direction 2A may be a second substrate 120 perpendicular to the first direction 1A. may be defined in a length direction of , and the third direction 3A may be defined as a thickness direction of the second substrate 120 .

Hereinafter, for convenience of description, the first direction 1A is the longitudinal direction of the second substrate 120 , the second direction 2A is the width direction of the second substrate 120 , and the second direction 1A is the width direction of the second substrate 120 . The three directions 3A will be described as the thickness direction of the second substrate 120 .

The second electrode 220 may be disposed on one surface of the second substrate 120 . In detail, the second electrode 220 may be disposed on the lower surface of the second substrate 120 . That is, the second electrode 220 may be disposed on a surface of the second substrate 120 and the first substrate 110 facing each other. That is, the second electrode 220 may be disposed to face the first electrode 210 on the first substrate 110 . That is, the second electrode 220 may be disposed between the first electrode 210 and the second substrate 120 .

The second electrode 220 may include the same or similar material to the first electrode 210 described above.

The second electrode 220 may include a transparent conductive material. For example, the second electrode 220 may include a conductive material having a light transmittance of about 80% or more. For example, the second electrode 220 may include indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, It may include a metal oxide such as titanium oxide.

The second electrode 220 may have a thickness of about 10 nm to about 50 nm.

Alternatively, the second electrode 220 may include various metals to realize low resistance. For example, the second electrode 220 may be chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), or molybdenum (Mo). At least one of gold (Au), titanium (Ti), and alloys thereof may be included.

Referring to FIG. 4 , the second electrode 220 may be disposed on the entire surface of one surface of the second substrate 120 . In detail, the second electrode 220 may be disposed as a surface electrode on one surface of the second substrate 120 . However, the embodiment is not limited thereto, and the second electrode 220 may be formed of a plurality of pattern electrodes having a uniform pattern such as a mesh or stripe shape.

For example, the second electrode 220 may include a plurality of conductive patterns. In detail, the second electrode 220 may include a plurality of mesh lines crossing each other and a plurality of mesh openings formed by the mesh lines.

Accordingly, even if the second electrode 220 includes a metal, the second electrode is not visually recognized from the outside, so that visibility may be improved. In addition, the light transmittance is increased by the openings, so that the luminance of the light path control member according to the embodiment may be improved.

The first substrate 110 and the second substrate 120 may have the same size or different sizes. The first substrate 110 and the second substrate 120 may have the same, similar or different sizes.

In detail, the first length extending in the first direction 1A of the first substrate 110 is the same as the second length L2 extending in the first direction 1A of the second substrate 120 or They may have similar sizes.

For example, the first length and the second length may have a size of 300 mm to 400 mm.

Also, the first width extending in the second direction 2A of the first substrate 110 may have the same or similar size as the second width extending in the second direction of the second substrate 120 . .

For example, the first width and the second width may have a size of 150 mm to 200 mm.

Alternatively, the first width extending in the second direction 2A of the first substrate 110 may have a different size from the second width extending in the second direction of the second substrate 120 .

For example, within the above range, the first width may be larger than the second width.

In addition, a first thickness extending in the third direction 3A of the first substrate 110 may be the same as or similar to a second thickness extending in the third direction of the second substrate 120 . .

For example, the first thickness and the second thickness may have a size of 1 mm or less.

Referring to FIG. 1 , the first substrate 110 and the second substrate 120 may be alternately disposed.

In detail, the first substrate 110 and the second substrate 120 may be disposed at positions crossing each other in the first direction 1A. In detail, the first substrate 110 and the second substrate 120 may be disposed so that the side surfaces of the substrates are staggered from each other.

Accordingly, the first substrate 110 may be disposed to protrude in one direction of the first direction 1A, and the second substrate 120 may protrude in the other direction of the first direction 1A. can be placed.

That is, the first substrate 110 may include a first protrusion protruding in one direction in the first direction 1A, and the second substrate 110 protruding in the other direction in the first direction 1A. It may include a second protrusion.

Accordingly, the optical path control member 1000 is configured to have a region where the first electrode 210 is exposed on the first substrate 110 and a region where the second electrode 220 is exposed under the second substrate 120 . It may contain areas.

That is, the first electrode 210 disposed on the first substrate 110 is exposed at the first protrusion, and the second electrode 220 disposed under the second substrate 120 is the second electrode 210 . 2 can be exposed from the protrusion.

The first electrode 210 and the second electrode 220 exposed from the protrusions may be connected to the pad of the printed circuit board through an anisotropic conductive material, and the light path control member and the printed circuit board may be electrically connected. have.

Alternatively, referring to FIG. 2 , the first substrate 110 and the second substrate 120 may be disposed at positions corresponding to each other. In detail, the first substrate 110 and the second substrate 120 may be arranged so that each side surface corresponds to each other.

Accordingly, the first substrate 110 may be disposed to protrude in one direction of the first direction 1A, and the second substrate 120 may also be disposed in one direction of the first direction 1A, that is, the It may be disposed to protrude in the same direction as the first substrate 110 .

That is, the first substrate 110 may include a first protrusion that protrudes in one direction in the first direction 1A, and the second substrate also protrudes in one direction in the first direction 1A. It may include a second protrusion.

That is, the first protrusion and the second protrusion may protrude in the same direction.

Accordingly, the optical path control member 1000 is configured to have a region where the first electrode 210 is exposed on the first substrate 110 and a region where the second electrode 220 is exposed under the second substrate 120 . It may contain areas.

That is, the first electrode 210 disposed on the first substrate 110 is exposed at the first protrusion, and the second electrode 220 disposed under the second substrate 120 is the second electrode 210 . 2 can be exposed from the protrusion.

The first electrode 210 and the second electrode 220 exposed from the protrusions may be connected to the pad of the printed circuit board through an anisotropic conductive material, and the light path control member and the printed circuit board may be electrically connected. have.

The light conversion unit 300 may be disposed between the first substrate 110 and the second substrate 120 . In detail, the light conversion unit 300 may be disposed between the first electrode 210 and the second electrode 220 .

Functional layers may be disposed between at least one of the light conversion unit 300 and the first substrate 110 or between the light conversion unit 300 and the second substrate 120 .

In detail, a first buffer layer 410 that facilitates adhesion between the light conversion unit 300 and the first electrode 210 may be disposed between the light conversion unit 300 and the first substrate 110 . have. In addition, a second buffer layer 420 that facilitates adhesion between the light conversion unit 300 and the second electrode 220 may be disposed between the light conversion unit 300 and the second substrate 120 . have.

The light conversion unit 300 may include a barrier rib layer and a receiving unit 330 formed by the barrier rib layer.

The barrier rib layer may include a first barrier rib layer 310 and a second barrier rib layer 320 disposed on the first barrier rib layer 310 .

The first barrier rib layer 310 may be disposed on the first electrode 210 . That is, the first barrier rib layer 310 may be disposed on the first buffer layer 410 on the first electrode 210 .

The second barrier rib layer 320 may be disposed under the second electrode 220 . That is, the second barrier rib layer 320 may be disposed under the second buffer layer 420 under the second electrode 220 .

The first barrier rib layer 310 and the second barrier rib layer 320 may include different materials. For example, the first barrier rib layer 310 and the second barrier rib layer 320 may include resin materials having different curing characteristics.

The first barrier rib layer 310 may include a photocurable resin that is cured by light. In addition, the second barrier rib layer 320 may include a heat-and-light-curable resin that is cured by heat and light.

For example, the first barrier layer 310 may include a photoinitiator, a photosensitizer, a hydroxy ketone (a-hydroxy ketone), an alpha amino ketone (a-amino ketone)-based, BDK, or a phenyl glyoxylate-based , and may include a photocurable material including at least one of acryl phosphine oxide-based materials.

In addition, the second barrier rib layer 310 may include Azo bis iso-butyro nitril (AIBN), Benzoyl peroxide (BPO), di-tert-butyl peroxide, tert-butyl perbenzoate, and Kali persulfate (KPS) together with the photo-curable material. A thermosetting material including at least one of may include a mixed curable material.

That is, in the first barrier rib layer 310 , the curable material may be cured only by light, and in the second barrier rib layer 320 , the curable material may be cured by both light and heat.

The first barrier rib layer 310 and the second barrier rib layer 320 may each include barrier rib portions. In detail, the first partition wall layer 310 may include a first partition wall part 312 , and the second partition wall layer 320 may include a second partition wall part 322 .

The accommodating part 330 described below may be disposed between the first partition wall part 312 and the second partition wall part 322 .

5 to 10 are views for explaining the first barrier rib layer 310 and the second barrier rib layer 320 of the light path control member according to the first embodiment.

5 and 6 , the first partition wall layer 310 may include a first base layer 311 and a first partition wall part 312 disposed on the first base layer 311 . . That is, in the first partition wall layer 310 , the first base layer 311 and the first partition wall portion 312 may be defined by the plurality of first pattern portions P1 .

The first partition wall part 312 may be disposed to extend in one direction. For example, the first partition wall part 312 may be disposed to extend in the second direction 2A. That is, the first partition wall part 312 may include a plurality of partition wall parts extending in the second direction 2A and spaced apart from each other in the first direction 1A.

7 and 8 , the second barrier rib layer 320 may include a second base layer 321 and a second barrier rib part 322 disposed on the second base layer 321 . . That is, in the second barrier rib layer 310 , the second base layer 321 and the second barrier rib 322 may be defined by a plurality of second pattern portions P2 .

The second partition wall portion 322 may be disposed to extend in one direction. The second partition wall part 3220 may be disposed to extend in the same direction as the first partition wall part 312 . For example, the second partition wall portion 322 may be disposed to extend in the second direction 2A. That is, the second partition wall portion 322 may include a plurality of partition wall portions extending in the second direction 2A and spaced apart from each other in the first direction 1A.

The first partition wall layer 310 and the second partition wall layer 320 may be disposed in contact with each other. Specifically, the first partition wall layer 310 and the second partition wall layer 320 are disposed in direct contact with each other. can be

9 and 10 , the first partition wall portion 312 of the first partition wall layer 310 may contact the second base layer 321 of the second partition wall layer 320, and the The second barrier rib portion 322 of the second barrier rib layer 320 may contact the first base layer 311 of the first barrier rib layer 310 .

That is, the first partition wall portion 312 of the first partition wall layer 310 may contact the second base layer 321 of the second partition wall layer 320 inside the second pattern portion P2. and the second partition wall portion 322 of the second partition wall layer 320 may contact the first base layer 311 of the first partition wall layer 310 inside the first pattern portion P1. have.

Accordingly, the first partition wall layer 310 and the second partition wall layer 320 disposed on the first partition wall layer 310 include the first partition wall part 312 and the second partition wall part 322 . may be glued to each other while crossing each other.

Accordingly, an empty space may be formed between the first partition wall part 312 and the second partition wall part 322 , and a plurality of accommodation parts 330 may be formed by the space.

The receiving part 330 may be disposed to extend in one direction. The accommodating part 330 may be disposed to extend in the same direction as the first partition wall part 312 and the second partition wall part 3220 . For example, the accommodating part 330 may be disposed to extend in the second direction 2A. That is, the accommodating part 330 may include a plurality of accommodating parts extending in the second direction 2A and spaced apart from each other in the first direction 1A.

The size of the plurality of accommodating parts 330 may be uniform. That is, the first partition wall layer 310 and the second partition wall layer 320 are adhered to each other so that the distance between the first partition wall part 311 and the second partition wall part 322 is the same or similar in size. can be For example, a size difference between the plurality of accommodating parts may be less than 3%. In more detail, the size difference between the plurality of receiving parts may be 0.5% to 3%.

The height h1, ie, thickness, of the first base layer 311 and the height h2, ie, thickness, of the second base layer 321 may be the same or similar to each other. For example, the height h1 of the first base layer 311 and the height h2 of the second base layer 321 may be 15 μm or less. In detail, the height h1 of the first base layer 311 and the height h2 of the second base layer 321 may be 5 μm to 15 μm.

When the height h1 of the first base layer 311 and the height h2 of the second base layer 321 exceed 15 μm, the first electrode 210 and the second electrode 220 The distance between the receiving units 330 may be increased. Accordingly, due to the resistance of the first base layer 311 and the second base layer 321 , the first electrode 210 and the second electrode 220 are applied in the direction of the receiving part 330 . The voltage transmission characteristic may be deteriorated, and the driving characteristic and the driving speed of the optical path control member may be deteriorated.

In addition, when the height h1 of the first base layer 311 and the height h2 of the second base layer 321 are less than 5 μm, the first barrier rib layer 310 and the second barrier rib layer ( The height of the base layers supporting the 320 may be reduced, so that the supporting force for supporting the first partition wall part 312 and the second partition wall part 322 may be reduced, and the adhesive force between the partition wall layer and the electrode may be reduced. can Accordingly, the reliability of the light path control member may be deteriorated.

The crosslinking density of the first base layer 311 and the crosslinking density of the second base layer 321 may be the same or similar to each other, for example, the crosslinking density of the first base layer 311 and the crosslinking density of the second base layer 321 Second, the crosslinking density of the base layer 321 may be 40% or more. In detail, the crosslinking density of the first base layer 311 and the crosslinking density of the second base layer 321 may be 60% or more. In more detail, the crosslinking density of the first base layer 311 and the crosslinking density of the second base layer 321 may be 70% or more.

When the crosslinking density of the first base layer 311 and the crosslinking density of the second base layer 321 are 40% or less, the durability of the first partition wall layer 310 and the second partition wall layer 320 is reduced. and, accordingly, the reliability of the light path control member may be deteriorated.

The light path control member according to the first embodiment can easily reduce the size of the accommodating part. In detail, since the light path control member according to the first embodiment can form the receiving portion by the first and second barrier rib layers that are alternately disposed with each other, the size of the patterns formed in each of the barrier rib layers is accommodated. It can be formed larger than the size of the part.

Accordingly, the size of the accommodating portion may be reduced while easily forming the patterns formed on the first and second barrier rib layers. Accordingly, it is possible to increase the area of the barrier rib portions that are regions through which light is transmitted in the light path control member. Accordingly, in the light path controlling member according to the first exemplary embodiment, the size of the accommodating portion may be reduced and the width of the barrier rib portion may be relatively increased, thereby improving the luminance of the light path controlling member.

Hereinafter, a light path control member according to a second embodiment will be described with reference to FIGS. 11 to 13 . 11 to 13 are views for explaining the first barrier rib layer 310 and the second barrier rib layer 320 of the light path control member according to the second embodiment.

In the description of the light path control member according to the second embodiment, the same and similar components as those of the light path control member according to the first exemplary embodiment described above will be omitted, and the same reference numerals will be given to the same components.

Referring to FIG. 11 , the first partition wall layer 310 may include a first base layer and a first partition wall part 312 disposed on the first base layer. That is, in the first partition wall layer 310 , the first base layer and the first partition wall portion 312 may be defined by the plurality of first pattern portions P1 .

The first partition wall part 312 may be disposed to extend in one direction. For example, the first partition wall part 312 may be disposed to extend in the first direction 1A. The plurality of first partition wall portions 312 extending in the first direction 1A forms one first partition wall portion group spaced apart from each other in the first direction 1A, and the first partition wall portion group may be disposed to be spaced apart from each other in the second direction 2A.

Referring to FIG. 12 , the second barrier rib layer 320 may include a second base layer and a second barrier rib part 322 disposed on the second base layer. That is, in the second barrier rib layer 320 , the second base layer and the second barrier rib 322 may be defined by a plurality of second pattern portions P2 .

The second partition wall portion 322 may be disposed to extend in one direction. For example, the second partition wall portion 322 may be disposed to extend in the second direction 2A. A plurality of second partition wall portions 322 extending in the second direction 2A forms one second partition wall portion group spaced apart from each other in the second direction 2A, and the second partition wall portion group may be disposed to be spaced apart from each other in the twenty-first direction 1A.

The first partition wall part 312 and the second partition wall part 322 may extend in different directions. In addition, the first partition wall part 312 and the second partition wall part 322 may be formed to have different sizes. In addition, the first partition wall part 312 and the second partition wall part 322 may be formed to have different areas. The first partition wall part 312 and the second partition wall part 322 may be formed in different shapes. The first partition wall part 312 and the second partition wall part 322 may be disposed so as not to overlap each other in the third direction 3A.

13 is a top view showing the first barrier rib layer 310 and the second barrier rib layer 320 are adhered to each other.

Referring to FIG. 13 , the first partition wall part 312 of the first partition wall layer 310 may contact the second base layer of the second partition wall layer 320 , and the second partition wall layer 320 may be in contact with the second partition wall layer 320 . ) of the second partition wall portion 322 may be in contact with the first base layer of the first partition wall layer 310 .

That is, the first partition wall part 312 of the first partition wall layer 310 may contact the second base layer of the second partition wall layer 320 inside the second pattern part P2, and the The second barrier rib portion 322 of the second barrier rib layer 320 may contact the first base layer of the first barrier rib layer 310 inside the first pattern portion P1 .

That is, the first partition wall layer 310 and the second partition wall layer 320 are formed so that the first partition wall part 312 and the second partition wall part 322 do not overlap each other in the third direction 3A. can be adhered to each other.

Accordingly, the first partition wall layer 310 and the second partition wall layer 320 disposed on the first partition wall layer 310 include the first partition wall part 312 and the second partition wall part 322 . may be glued to each other while crossing each other.

Accordingly, an empty space may be formed between the first partition wall part 312 and the second partition wall part 322 , and a plurality of accommodation parts 330 may be formed by the space.

The shape of the accommodating part 330 may be formed in various shapes depending on the size, shape, direction, etc. of the first partition wall part 312 and the second partition wall part 322 . That is, the accommodating part 330 may be formed in various shapes by the first partition wall part 312 and the second partition wall part 322 having different sizes, shapes, and directions.

The light path control member according to the second exemplary embodiment may form the accommodating part in various shapes. That is, the first and second barrier ribs having different sizes, shapes and directions may be formed in various shapes to be realized by bonding the barrier rib layers so as not to overlap each other.

Accordingly, since the size, shape, directionality, etc. of the accommodating part can be implemented in various shapes according to the usage environment of the optical path control member, the target of application of the optical path control member can be expanded.

Hereinafter, a detailed stacking structure and a driving method of the light path control member according to the embodiment will be described with reference to FIGS. 14 and 15 .

14 and 15 are views illustrating a cross-sectional view taken along area A-A' of FIG. 1 .

14 and 15 , the light conversion unit 300 may include a partition wall unit 340 and a receiving unit 330 .

The partition wall part 340 may include the first partition wall part 312 and the second partition wall part 322 described above.

The partition wall part 340 may be defined as a partition wall area dividing the accommodation part 330 . That is, the barrier rib portion 340 may transmit light as a barrier rib region partitioning a plurality of accommodating units. In addition, the accommodating part 330 may be defined as a region that changes into a light blocking part and a light transmitting part according to the application of a voltage.

The partition wall part 340 and the accommodating part 330 may be alternately disposed with each other. The partition wall part 340 and the accommodating part 330 may be disposed to have different widths. For example, the width of the partition wall portion 340 may be greater than the width of the receiving portion 330 .

The partition wall part 340 and the accommodating part 330 may be alternately disposed with each other. In detail, the partition wall part 340 and the accommodating part 330 may be alternately disposed with each other. That is, each of the partition wall portions 340 may be disposed between the accommodating portions 330 adjacent to each other, and each of the accommodating portions 330 may be disposed between the adjacent partition wall portions 340 .

The barrier rib part 340 may transmit light incident on one of the first substrate 110 and the second substrate 120 in the direction of the other substrate.

For example, in FIGS. 14 and 15 , light may be emitted from the first substrate 110 by a light source disposed under the first substrate 110 and the light may be incident in the direction of the second substrate 120 . In this case, the barrier rib part 340 transmits the light, and the transmitted light may move in the direction of the second substrate 120 .

The accommodating part 330 may include a dispersion 330a and light conversion particles 330b. Specifically, the dispersion 330a is injected into the accommodating part 330 to be filled, and the dispersion 330a is in the A plurality of light conversion particles 330b may be dispersed.

The dispersion liquid 330a may be a material for dispersing the light conversion particles 330b. The dispersion 330a may include a transparent material. The dispersion 330a may include a non-polar solvent. In addition, the dispersion 330a may include a material capable of transmitting light. For example, the dispersion liquid 330a may include at least one of a halocarbon-based oil, a paraffin-based oil, and isopropyl alcohol.

The light conversion particles 330b may be dispersed in the dispersion 330a. In detail, the plurality of light conversion particles 330b may be disposed to be spaced apart from each other in the dispersion 330a.

The light conversion particles 330b may include a material capable of absorbing light. That is, the light conversion particles 330b) may be light absorbing particles, and the light conversion particles 330b may have a color. For example, the light conversion particles 330b may have a black-based color. For example, the light conversion particles 330b may include carbon black particles.

The light conversion particle 330b may have a polarity due to its surface being charged. For example, the surface of the light conversion particle 330b may be negatively charged. Accordingly, according to the application of the voltage, the light conversion particles 330b may move in the direction of the first electrode 210 or the second electrode 220 .

The light transmittance of the receiving part 330 may be changed by the light conversion particles 330b. In detail, the accommodating part 330 may be changed into a light blocking part and a light transmitting part by changing the light transmittance by the light conversion particles 330b. That is, the accommodating part 330 may change the transmittance of light passing through the accommodating part 330 by dispersion and aggregation of the light conversion particles 330b disposed therein in the dispersion 330a.

For example, the light path member according to the embodiment changes from the first mode to the second mode or from the second mode to the first mode by a voltage applied to the first electrode 210 and the second electrode 220 . can be

In detail, in the light path control member according to the embodiment, in the first mode, the accommodating part 330 may be a light blocking part, and light at a specific angle may be blocked by the accommodating part 330 . That is, the viewing angle of the user viewing from the outside is narrowed, so that the light path control member may be driven in the privacy mode.

In addition, in the light path control member according to the embodiment, in the second mode, the accommodating part 330 becomes a light transmitting part, and in the light path controlling member according to the embodiment, the partition wall part 340 and the accommodating part 330 . All light can be transmitted. That is, the viewing angle of the user viewing from the outside is widened, so that the light path control member may be driven in the open mode.

The conversion from the first mode to the second mode, that is, the conversion of the accommodating part 330 from the light blocking part to the light transmitting part, may be implemented by the movement of the light conversion particles 330b of the accommodating part 330 . can That is, the light conversion particle 330b has a charge on its surface, and may move in the direction of the first electrode or the second electrode according to the application of a voltage according to the characteristics of the charge. That is, the light conversion particles 330b may be electrophoretic particles.

In detail, the receiving part 330 may be electrically connected to the first electrode 210 and the second electrode 220 .

Also, the first electrode 210 and the second electrode 220 may be connected to the pad part 520 of the printed circuit board 550 through the anisotropic conductive material 510 .

At this time, when no voltage is applied to the optical path control member from the outside, the light conversion particles 330b of the accommodating part 330 are uniformly dispersed in the dispersion 330a, and accordingly, the accommodating part 330 . light may be blocked by the light conversion particles 330b. Accordingly, in the first mode, the accommodating part 330 may be driven as a light blocking part.

Alternatively, when a voltage is applied to the optical path control member through the printed circuit board 550 from the outside, the light conversion particles 330b may move. For example, the light conversion particle 330b may be moved toward one end or the other end of the receiving unit 330 by a voltage transmitted through the first electrode 210 and the second electrode 220 . can That is, the light conversion particles 330b may move in the direction of the first electrode 210 or the second electrode 220 .

In detail, when a voltage is applied to the first electrode 210 and/or the second electrode 220, an electric field is formed between the first electrode 210 and the second electrode 220, The negatively charged light conversion particles 330b may move toward the positive electrode of the first electrode 210 and the second electrode 220 using the dispersion 330a as a medium.

That is, when a voltage is applied to the first electrode 210 and/or the second electrode 220 , as shown in FIG. 14 , the light conversion particle 330b is the first electrode in the dispersion 330a. It may move in the (210) direction, that is, the light conversion particles 330b may be moved in one direction, and the receiving unit 330 may be driven as a light transmitting unit.

Alternatively, when no voltage is applied to the first electrode 210 and/or the second electrode 220 , as shown in FIG. 15 , the light conversion particles 330b are uniformly dispersed in the dispersion liquid 330a. Thus, the accommodating part 330 may be driven as a light blocking part.

Accordingly, the light path control member according to the embodiment may be driven in two modes according to the user's surrounding environment. That is, when the user wants to transmit light only at a specific viewing angle, the receiving unit is driven as a light blocking unit, or in an environment in which the user requires a wide viewing angle and high luminance, a voltage is applied to drive the receiving unit as a light transmitting unit. have.

Accordingly, since the light path control member according to the embodiment can be implemented in two modes according to the user's request, the light path member can be applied regardless of the user's environment.

Hereinafter, a method of manufacturing the light path control member according to the embodiment will be described with reference to FIGS. 16 to 20 . The manufacturing method of the optical path control member to be described below will be mainly described in the case where the first substrate and the second substrate have the same size as in FIGS. 1 and 2 .

Referring to FIG. 16 , two substrates may be prepared, and an electrode layer may be disposed on each substrate. In detail, the first electrode 210 is formed by coating or depositing an electrode material on one surface of the first substrate 110 , and coating or depositing the electrode material on one surface of the second substrate 120 to form a second electrode (220) may be formed.

The electrode material may be formed on the entire surface of the first substrate 110 and the second substrate 120 . Accordingly, the first electrode 210 and the second electrode 220 formed as a surface electrode, respectively, may be formed on the first substrate 110 and the second substrate 120 .

Then, referring to FIG. 17 , a resin layer may be formed by coating a resin material on the first electrode 210 . In detail, a resin layer may be formed by coating a photocurable resin on the first electrode 210 .

In this case, before disposing the resin layer, a first buffer layer 410 may be additionally disposed on the first electrode 210 . In detail, by disposing the first buffer layer 410 having good adhesion to the resin layer on the first electrode 210 , and then disposing the resin layer on the first buffer layer 410 , the adhesion of the resin layer can improve

For example, the first buffer layer 410 may include a lipophilic group such as -CH- and an alkyl group having good adhesion to the electrode and a hydrophilic group such as -NH, -OH, and -COOH having good adhesion to the resin layer. material may be included.

In this way, the resin layer may be patterned. Accordingly, a first pattern part P1 is formed on the resin layer, and the first partition wall layer including the first base layer 311 and the first partition wall part 312 by the first pattern part P1. 310 may be formed.

Subsequently, referring to FIG. 18 , a resin layer may be formed by coating a resin material on the second electrode 210 . In detail, a resin layer may be formed by coating a resin material in which a photocurable resin and a thermosetting resin are mixed on the second electrode 220 .

In this case, before disposing the resin layer, a second buffer layer 420 may be additionally disposed on the second electrode 220 . In detail, by disposing the second buffer layer 420 having good adhesion to the resin layer on the second electrode 220 , and disposing the resin layer on the second buffer layer 420 , the adhesion of the resin layer can improve

For example, the second buffer layer 412 may include the same or similar material to the first buffer layer 410 described above.

In this way, the resin layer may be patterned. Accordingly, a second pattern portion P2 is formed on the resin layer, and the second partition wall layer including the second base layer 321 and the second partition wall portion 322 by the second pattern portion P2. 320 may be formed.

Then, referring to FIGS. 19 and 20 , the first barrier rib layer 310 and the second barrier rib layer 320 may be adhered.

In detail, the first barrier rib layer 310 and the second barrier rib layer 320 are formed by photo-curing the resin material on the first electrode 210 and the resin material on the second electrode 220 by UV or the like. can do.

Next, the first barrier rib layer 310 and the second barrier rib layer 320 on the first barrier rib layer 310 are applied so that the first barrier rib part 312 and the second barrier rib part 322 are crossed with each other. can be placed

Then, heat may be applied to the second partition wall layer 320 to bond the second partition wall part 322 and the first base layer 311 of the first partition wall part 312 to each other. Accordingly, the first partition wall layer 310 and the second partition wall layer 320 are adhered to each other, and a plurality of accommodation parts 330 are disposed between the first partition wall part 312 and the second partition wall part 322 . ) can be formed.

Subsequently, although not shown in the drawings, a sealing unit for sealing the light conversion unit may be additionally disposed.

The light path control member according to the embodiment may reduce the size of the accommodating part in which the light conversion material is accommodated.

In detail, in the light path control member according to the embodiment, since the two barrier rib layers, that is, the first barrier rib layer and the second barrier rib layer, are alternately disposed, thereby forming a receiving portion between the first and second barrier ribs, It is possible to easily form the accommodating portion having a smaller size.

Accordingly, the size of the accommodating portion can be reduced and the size of the barrier rib portion, which is a region through which light is transmitted, can be relatively increased, so that the luminance and visibility of the light path control member can be improved.

In addition, the light path control member according to the embodiment may have various shapes and arrangements of the accommodating part.

In detail, in the light path control member according to the embodiment, the size, shape, and extension direction of two barrier rib layers, that is, the first barrier rib layer and the second barrier rib layer, are formed in various ways, and they are alternately disposed, whereby the first barrier rib layer Since the accommodating part is formed between the part and the second partition wall part, the shape of the accommodating part can be implemented in various shapes.

Accordingly, the light path control member according to the embodiment may implement various shapes and arrangements of the receiving unit according to various use environments.

below. A display device and a display device to which the light path control member according to the embodiment is applied will be described with reference to FIGS. 21 to 24 .

Referring to FIG. 21 , the light path control member 1000 according to the embodiment may be disposed on the display panel 2000 .

The display panel 2000 and the light path control member 1000 may be disposed to adhere to each other. For example, the display panel 2000 and the light path control member 1000 may be bonded to each other through an adhesive member 1500 . The adhesive member 1500 may be transparent. For example, the adhesive member 1500 may include an adhesive or an adhesive layer including an optically transparent adhesive material.

The adhesive member 1500 may include a release film. In detail, when the light path member and the display panel are adhered, the light path control member and the display panel may be adhered after the release film is removed.

The display panel 2000 may include a first substrate 2100 and a second substrate 2200 . When the display panel 2000 is a liquid crystal display panel, the display panel 2000 includes a first substrate 2100 including a thin film transistor (TFT) and a pixel electrode, and a second substrate including color filter layers. 2200 may be formed in a structure in which the liquid crystal layer is interposed therebetween.

In addition, in the display panel 2000 , a thin film transistor, a color filter, and a black electrolyte 320a are formed on a first substrate 2100 , and a second substrate 2200 has a liquid crystal layer interposed therebetween. ) and may be a liquid crystal display panel having a color filter on transistor (COT) structure. That is, a thin film transistor may be formed on the first substrate 2100 , a protective film may be formed on the thin film transistor, and a color filter layer may be formed on the protective film. Also, a pixel electrode in contact with the thin film transistor is formed on the first substrate 2100 . In this case, in order to improve the aperture ratio and simplify the mask process, the black electrolyte may be omitted, and the common electrode may also serve as the black electrolyte.

Also, when the display panel 2000 is a liquid crystal display panel, the display device may further include a backlight unit that provides light from a rear surface of the display panel 2000 .

Alternatively, when the display panel 2000 is an organic light emitting display panel, the display panel 2000 may include a self-luminous device that does not require a separate light source. In the display panel 2000 , a thin film transistor may be formed on a first substrate 2100 , and an organic light emitting device in contact with the thin film transistor may be formed. The organic light emitting device may include an anode, a cathode, and an organic light emitting layer formed between the anode and the cathode. In addition, a second substrate 2200 serving as an encapsulation substrate for encapsulation on the organic light emitting device may be further included.

Also, although not shown in the drawings, a polarizing plate may be further disposed between the light path control member 1000 and the display panel 2000 . The polarizing plate may be a linear polarizing plate or an external light reflection preventing polarizing plate. For example, when the display panel 2000 is a liquid crystal display panel, the polarizing plate may be a linear polarizing plate. Also, when the display panel 2000 is an organic light emitting display panel, the polarizing plate may be an external light reflection preventing polarizing plate.

In addition, an additional functional layer 1300 such as an anti-reflection layer or anti-glare may be further disposed on the light path control member 1000 . In detail, the functional layer 1300 may be adhered to one surface of the base substrate 100 of the light path control member. Although not shown in the drawings, the functional layer 1300 may be bonded to the base substrate 100 of the light path control member through an adhesive layer. In addition, a release film for protecting the functional layer may be further disposed on the functional layer 1300 .

Also, a touch panel may be further disposed between the display panel and the light path control member.

Although the drawing shows that the light path control member is disposed on the display panel, the embodiment is not limited thereto, and the light control member is positioned at a position where light can be adjusted, that is, under the display panel or on the display panel. It may be disposed in various positions, such as between the second substrate and the first substrate.

22 and 23 , the light path control member according to the embodiment may be applied to various display devices.

22 and 23 , the light path control member according to the embodiment may be applied to a display device displaying a display.

For example, when power is not applied to the light path control member as shown in FIG. 22 , the accommodating part functions as a light blocking unit, the display device is driven in the light blocking mode, and power is applied to the light path control member as shown in FIG. 23 . In this case, the accommodating part functions as a light transmitting part, so that the display device may be driven in the open mode.

Accordingly, the user can easily drive the display apparatus in the privacy mode or the normal mode according to the application of power.

Also, referring to FIG. 24 , the display device to which the light path control member according to the embodiment is applied may also be applied to the interior of a vehicle.

For example, the display device including the light path control member according to the embodiment may display vehicle information and an image confirming a moving path of the vehicle. The display device may be disposed between a driver's seat and a passenger seat of the vehicle.

In addition, the light path control member according to the embodiment may be applied to an instrument panel that displays a vehicle speed, an engine, and a warning signal.

In addition, the light path control member according to the embodiment may be applied to the windshield FG or left and right window glass of a vehicle.

Features, structures, effects, etc. described in the above-described embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiments have been described above, these are merely examples and do not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are exemplified above in a range that does not depart from the essential characteristics of the present embodiment. It can be seen that various modifications and applications that have not been made are possible. For example, each component specifically shown in the embodiments may be implemented by modification. And the differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (12)

a first substrate;
a first electrode disposed on the first substrate;
a second substrate disposed on the first substrate;
a second electrode disposed under the second substrate; and
and a light conversion unit disposed between the first electrode and the second electrode,
The light conversion unit,
a first barrier rib layer including a first base layer and a plurality of first barrier rib portions on the first base layer;
a second barrier rib layer disposed on the first barrier rib layer and including a second base layer and a plurality of second barrier rib portions on the second base layer; and
a plurality of accommodating parts between the first partition wall part and the second partition wall part;
The first and second barrier ribs are alternately disposed. The method of claim 1,
The first partition wall portion is in contact with the second base layer,
The second barrier rib part is an optical path control member in contact with the first base layer. The method of claim 1,
A thickness of the first base layer and the second base layer is 5 μm to 15 μm. The method of claim 1,
and a first buffer layer between the first electrode and the first barrier rib layer and a second buffer layer between the second electrode and the second barrier rib layer. The method of claim 1,
The first and second barrier ribs do not overlap each other in a thickness direction of the first substrate. The method of claim 1,
The first barrier rib layer includes a photo-curable resin,
The second barrier rib layer includes a light-curable resin and a thermo-curable resin. The method of claim 1,
A crosslinking density of the first barrier rib layer and the second barrier rib layer is 70% or more. The method of claim 1,
The first and second barrier ribs extend in different directions from each other. The method of claim 1,
The first and second barrier ribs have different shapes or different sizes. display panel; and
a light path control member disposed on the display panel;
The light path control member,
a first substrate;
a first electrode disposed on the first substrate;
a second substrate disposed on the first substrate;
a second electrode disposed under the second substrate; and
and a light conversion unit disposed between the first electrode and the second electrode,
The light conversion unit,
a first barrier rib layer including a first base layer and a plurality of first barrier rib portions on the first base layer;
a second barrier rib layer disposed on the first barrier rib layer and including a second base layer and a plurality of second barrier rib portions on the second base layer; and
a plurality of accommodating parts between the first partition wall part and the second partition wall part;
The receiving unit includes a dispersion and light conversion particles dispersed in the dispersion,
The first partition wall portion and the second partition wall portion are disposed to be alternately arranged 11. The method of claim 10,
The size and shape extension directions of the first partition wall part and the second partition wall part are the same or different from each other. 11. The method of claim 10,
a first buffer layer between the first electrode and the first barrier rib layer and a second buffer layer between the second electrode and the second barrier rib layer;
The first buffer layer and the second buffer layer include the same material.

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