KR20230089673A - Light route control member and display having the same - Google Patents

Abstract

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; A light conversion unit disposed between the first electrode and the second electrode, formed in a cutting area formed by cutting the second substrate, the second electrode, and the light conversion unit, and extending in a first direction. a first sealing part and a second sealing part; a third sealing part and a fourth sealing part formed in a cutting area formed by cutting the second substrate, the second electrode, and the light conversion part and extending in a second direction different from the first direction; At least one sealing portion of the first sealing portion, the second sealing portion, the third sealing portion, and the fourth sealing portion includes a narrowing area extending from the second substrate toward the first substrate, The other sealing part of at least one of the first sealing part, the second sealing part, the third sealing part, and the fourth sealing part includes a region in which a width is narrowed while extending from the second substrate toward the first substrate. do.

Description

Optical path control member and display device including the same {LIGHT ROUTE CONTROL MEMBER AND DISPLAY HAVING THE SAME}

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

The light blocking film is a light path control member that blocks the transmission of light from a light source, and is attached to the front of a display panel used for mobile phones, laptops, tablet PCs, vehicle navigations, vehicle touches, etc. so that the display transmits the screen. It is used for the purpose of expressing clear image quality at the viewing angle required by the user by adjusting the viewing angle of light according to the incident angle of light.

In addition, the light path control member may be used for windows of vehicles or buildings to partially block external light to prevent glare or to prevent the inside from being seen from the outside.

That is, the light path control member may be a light path control member that controls the movement path of light, blocks light in a specific direction, and transmits light in a specific direction. Accordingly, the angle of view of the user can be controlled by controlling the transmission angle of light by the light path control member.

On the other hand, such a light path control member includes a light blocking film capable of always controlling the viewing angle regardless of the surrounding environment or the user's environment, and a switchable light blocking film capable of turning on/off the viewing angle control by the user according to the surrounding environment or the user's environment. It can be classified as a film.

The light path control member fills the pattern part with a light conversion material including particles capable of moving according to the application of voltage and a dispersion liquid for dispersing the inside of the pattern part, and the pattern part is changed into a light transmitting part and a light blocking part by dispersion and aggregation of the particles. can be implemented

At this time, in order to apply a voltage to the light path control member, an electrode of the light path control member must be connected to an external power source. Such a connection portion is an electrode connection portion, not an area that controls a viewing angle, and may be defined as a bezel area in a display device.

Meanwhile, the light path control member may form a sealing part by cutting one surface of the light path control member to seal the light conversion material and filling the cut area with the sealing material.

In this case, since the sealing material is filled while the light conversion material is filled, the light conversion material and the sealing material may be mixed before the sealing material is cured. Accordingly, in the sealing part formed by curing the sealing material, a region where the sealing material and the light conversion material are mixed may be recognized as a stain.

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

Embodiments are intended to provide a light path control member having improved reliability and visibility.

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; A light conversion unit disposed between the first electrode and the second electrode, formed in a cutting area formed by cutting the second substrate, the second electrode, and the light conversion unit, and extending in a first direction. a first sealing part and a second sealing part; a third sealing part and a fourth sealing part formed in a cutting area formed by cutting the second substrate, the second electrode, and the light conversion part and extending in a second direction different from the first direction; At least one sealing portion of the first sealing portion, the second sealing portion, the third sealing portion, and the fourth sealing portion includes a narrowing area extending from the second substrate toward the first substrate, The other sealing part of at least one of the first sealing part, the second sealing part, the third sealing part, and the fourth sealing part includes a region in which a width is narrowed while extending from the second substrate toward the first substrate. do.

The light path control member according to the embodiment may be formed by curing the sealing portion before injecting the light conversion material into other regions, except for the region into which the light conversion material is injected.

That is, except for the first sealing part into which the light conversion material is injected, the second sealing part, the third sealing part, and the fourth sealing part may cure the sealing material before injecting the light conversion material to form a cured sealing part. .

Therefore, since the light conversion material is injected into the second sealing part, the third sealing part, and the fourth sealing part after the sealing part is cured, the second sealing part, the third sealing part, and the fourth sealing part have improved hardening. Since it has properties, it can have improved sealing properties.

In addition, since the second sealing part, the third sealing part, and the fourth sealing part are not mixed with a light conversion material or the like during a curing process, it is possible to prevent stains caused by the light conversion material, thereby improving user visibility.

In addition, although the first sealing part is formed by injecting a light conversion material and then curing the sealing material, since the width of the first sealing part is smaller than that of the other sealing parts, it is possible to minimize the appearance of stains from the outside.

Alternatively, in the light path control member according to the embodiment, except for the first sealing part and the fourth sealing part into which the light conversion material is injected, the second sealing part and the third sealing part cure the sealing material before injecting the light conversion material. Thus, a hardened sealing portion may be formed.

Therefore, since the light conversion material is injected into the second sealing part and the third sealing part after the sealing part is cured, the second sealing part and the third sealing part have improved curing characteristics, and thus may have improved sealing characteristics.

In addition, since the second sealing part and the third sealing part are not mixed with a light conversion material or the like during a curing process, it is possible to prevent stains caused by this, thereby improving user's visibility.

In addition, although the first sealing part is formed by injecting a light conversion material and then curing the sealing material, since the width of the first sealing part is smaller than that of the other sealing parts, it is possible to minimize the appearance of stains from the outside.

In addition, the fourth sealing part is formed by injecting the light conversion material and then curing the sealing material, but since the light conversion material can be injected through the fourth sealing part, the tilting angle of the receiving part can be set to various size ranges.

1 is a perspective view of a light path control member according to an embodiment.
2 is a top view of a first substrate of a light path control member according to an embodiment.
3 is a top view of two substrates of a light path control member according to an embodiment.
4 is a top view of a second substrate in which a first substrate and a second substrate of the light path control member according to the embodiment are laminated;
5 and 6 are cross-sectional views taken along the area AA′ of FIG. 1 .
FIG. 7 is a cross-sectional view taken along the area BB′ of FIG. 4 .
8 is another top view of a second substrate in which the first substrate and the second substrate of the light path control member according to the embodiment are laminated;
FIG. 9 is a cross-sectional view taken along a region CC′ of FIG. 8 .
FIG. 10 is a cross-sectional view taken along a region DD′ of FIG. 8 .
11 and 12 are cross-sectional views of a display device to which a light path control member according to an exemplary embodiment is applied.
13 to 15 are views for explaining one embodiment of a display device to which a light path control member according to an embodiment is applied.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical idea of the present invention is not limited to some of the described embodiments, but may be implemented in various different forms, and if it is within the scope of the technical idea of the present invention, one or more of the components among the embodiments can be selectively selected. can be used by combining and substituting.

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

Also, 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 described as “at least one (or more than one) of A and (and) B and C”, the combination of A, B, and C is possible. Can include one or more of all possible combinations.

Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the term is not limited to the nature, order, or order of the corresponding component.

And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected to, combined with, or connected to the other component, but also with the component. It may also include the case of being 'connected', 'combined', or 'connected' due to another component between the other components.

In addition, when it is described as being formed or disposed on the "top (above) or bottom (bottom)" of each component, the top (top) or bottom (bottom) is not only a case where two components are in direct contact with each other, but also one A case in which another component above is formed or disposed between two components is also included.

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, a light path control member according to an embodiment will be described with reference to the drawings. The light path control member to be described below may be a switchable light blocking film that is driven in an open mode and a light blocking mode according to the application of power.

1 is a perspective view of a light path control member according to an embodiment.

Referring to FIG. 1 , the light path control member 1000 according to the embodiment includes a first substrate 110, a second substrate 120, a first electrode 210, a second electrode 220, 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, soft polymer films include polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), and polymethylmethacrylic acid. Polymethyl Methacrylate (PMMA), Polyethylene Naphthalate (PEN), Polyether Sulfone (PES), Cyclic Olefin Copolymer (COC), TAC (Triacetylcellulose) film, Polyvinyl Alcohol ( It may be made of any one of a polyvinyl alcohol (PVA) film, a polyimide (PI) film, and a polystyrene (PS) film, which is only an example and is not necessarily limited thereto.

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

Also, the first substrate 110 may be a curved or bent substrate. That is, the light path control member including the first substrate 110 may also be formed to have a flexible, curved or bended characteristic. 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 It extends in a second direction 2A corresponding to the length or width direction of 110 and in a direction different from the first direction 1A and the second direction 2A, and the thickness direction of the first substrate 110 It may include 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 is a first substrate 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 width direction of the first substrate 110, and the second direction 2A is the first substrate 110 perpendicular to the first direction 1A. may be defined as a length direction of , and the third direction 3A may be defined as a thickness direction of the first substrate 110 .

Hereinafter, for convenience of description, the first direction 1A is the length direction of the first substrate 110, the second direction 2A is the width direction of the first substrate 110, and the first direction 1A is the width direction of the first substrate 110. The three directions 3A are 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, A metal oxide such as titanium oxide may be included.

The first electrode 210 may have a thickness of about 10 nm to about 300 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). It may include at least one metal selected from gold (Au), titanium (Ti), and alloys thereof.

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 patterned electrodes having a certain 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 210 is not visually recognized from the outside, and visibility may be improved. In addition, since light transmittance is increased by the openings, luminance of the light path control member according to the exemplary 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 the same or similar material as the first substrate 110 described above. For example, the second substrate 120 may include the same material as the first substrate 110 or a different material among the materials of the first substrate 110 described above.

In addition, the second substrate 120 may also extend in the first direction 1A, the second direction 2A, and the third direction 3A like the first substrate 110 described above. Hereinafter, for convenience of description, the first direction 1A is the length direction of the second substrate 120, the second direction 2A is the width direction of the second substrate 120, and the first direction 1A is the second substrate 120. The three directions 3A are 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 on which the second substrate 120 and the first substrate 110 face each other. That is, the second electrode 220 may be disposed facing 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 a material identical to or similar to that of the first electrode 210 described above. For example, the second electrode 220 may include the same material as the first electrode 210 or a different material among the materials of the first electrode 210 described above.

Also, the second electrode 220 may be formed to have the same or similar thickness as the first electrode 210 described above. In addition, the second electrode 220 may be formed in the same or similar shape as the first electrode 210 described above. For example, the second electrode 220 may be disposed as a surface electrode or a plurality of patterned electrodes.

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

In detail, the first length of the first substrate 110 extending in the first direction 1A has the same or similar size as the second length of the second substrate 120 extending in the first direction 1A. can have

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

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

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

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

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

Also, the first substrate 110 and the second substrate 120 may have different areas.

In detail, the first substrate 110 and the second substrate 120 may include protrusions. Referring to FIGS. 2 and 3 , the first substrate 110 may include a first protrusion PA1 , and the second substrate 120 may include a second protrusion PA2 . In detail, the first substrate 110 and the second substrate 120 may each include a first protrusion PA1 and a second protrusion PA2 disposed to be offset from each other.

That is, the first protrusion PA1 and the second protrusion PA2 may be disposed so as not to overlap each other in the third direction 3A.

Alternatively, the embodiment is not limited thereto, and the first protrusion PA1 and the second protrusion PA2 may include an overlapping area overlapping each other and a non-overlapping area not overlapping each other. That is, the first protrusion PA1 and the second protrusion PA2 may include an overlapping area overlapping each other in the third direction and a non-overlapping area not overlapping each other.

In this case, the first protrusion PA1 and the second protrusion PA2 may have different areas. That is, the first substrate 110 and the second substrate 120 may have different sizes by the size difference between the protrusions.

A connection area connected to an external printed circuit board or a flexible printed circuit board may be formed on the first protruding portion PA1 of the first substrate 110 and the second protruding portion PA2 of the second substrate 120, respectively. there is.

In detail, a first connection area CA1 may be disposed on the first protrusion PA1, and a second connection area CA2 may be disposed on the second protrusion PA2. When the first protrusion PA1 and the second protrusion PA2 are disposed at positions that are offset from each other, the first connection area CA1 and the second connection area CA2 extend in the third direction 3A. They can be arranged so that they do not overlap.

A conductive material may be exposed on upper surfaces of the first connection area CA1 and the second connection area CA2, respectively. For example, the first electrode 210 may be exposed in the first connection area CA1 , and a conductive material may be exposed in the second connection area CA2 . That is, a cutting area for filling the conductive material is formed in the second protrusion PA2 of the second substrate 120, and the second connection area CA2 is formed by filling the cutting area with the conductive material. can

Accordingly, the light path control member may be electrically connected to an external printed circuit board or a flexible printed circuit board through the first connection area CA1 and the second connection area CA2.

For example, a pad portion is disposed on the first connection area CA1 and the second connection area CA2, and an anisotropic conductive film (ACF) is disposed between the pad portion and the printed circuit board or the flexible printed circuit board. A conductive adhesive containing at least one of anisotropic conductive pastes (ACP) may be disposed to connect the light path control member and the external printed circuit board.

or, at least one of an anisotropic conductive film (ACF) and an anisotropic conductive paste (ACP) between the first connection area CA1 and the second connection area CA2 and the printed circuit board or flexible printed circuit board. By disposing a conductive adhesive, the light path control member and the external printed circuit board may be directly connected without a pad portion.

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 .

An adhesive layer or a buffer layer 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, and the adhesive layer And/or the first substrate 110, the second substrate 120, and the light conversion unit 300 may be bonded by a buffer layer.

For example, an adhesive layer 410 may be disposed between the first electrode 210 and the light conversion unit 300, thereby bonding the first substrate 110 and the light conversion unit 300. there is.

In addition, a buffer layer 420 is disposed between the second electrode 220 and the light conversion unit 300, whereby the second electrode 220 and the light conversion unit ( 300) can improve the adhesion.

The light conversion part 300 may include a plurality of barrier rib parts 310 and a receiving part 320 . A light conversion material 330 including light conversion particles that move when voltage is applied and a dispersion liquid for dispersing the light conversion particles may be disposed in the accommodating part 320, and the light path control member is controlled by the light conversion particles. The light transmission characteristics of may be changed.

Referring to FIGS. 3 and 4 , the accommodating part 320 may be disposed extending in one direction. In detail, the accommodating part 320 may be tilted at a certain angle and disposed.

For example, the accommodating part 320 may extend in a direction different from the first direction 1A and the second direction 2A of the first substrate 110 or the second substrate 120 . . That is, the accommodating part 320 may tilt and extend in the first direction 1A and the second direction 2A. For example, the accommodating part 320 may extend in a direction between the first direction 1A and the second direction 2A.

Accordingly, the accommodating parts 320 may be sealed by the same or different sealing parts.

For example, all of the accommodating parts 320 may be sealed by the first sealing part 510 and the second sealing part 520 .

Alternatively, at least one of the accommodating parts 320 is sealed by the first sealing part 510 and the third sealing part 530, and the other at least one accommodating part is sealed by the first sealing part 510. ) and the second sealing part 520, and another at least one receiving part may be sealed by the second sealing part 520 and the fourth sealing part 540.

As the accommodating part 320 is tilted at an inclination angle set in the first direction 1A and the second direction 2A of the light path control member, the light path control member is combined with a display panel to form a display. When forming the device, it is possible to prevent a moiré phenomenon caused by the overlapping of the accommodating portion of the light path control member and the pattern portion of the display panel.

5 and 6 are cross-sectional views taken along line AA' of FIG. 1 .

Referring to FIGS. 5 and 6 , the light conversion part 300 may include a barrier rib part 310 and an accommodating part 320 .

The barrier rib portion 310 may be defined as a barrier rib region defining an accommodating portion. That is, the barrier rib portion 310 is a barrier rib region that divides a plurality of accommodating units and may transmit light. That is, light emitted in the direction of the first substrate 110 or the second substrate 120 may pass through the barrier rib portion.

The barrier rib portion 310 and the accommodating portion 320 may be disposed in different widths. For example, the width of the barrier rib portion 310 may be greater than that of the accommodating portion 320 .

In addition, the accommodating portion 320 may be formed in a shape that extends from the first electrode 210 toward the second electrode 220 and narrows in width.

The barrier rib portion 310 and the accommodating portion 320 may be alternately disposed. In detail, the barrier rib portion 310 and the accommodating portion 320 may be alternately disposed. That is, each of the barrier rib portions 310 may be disposed between the accommodating portions 320 adjacent to each other, and each accommodating portion 320 may be disposed between the barrier rib portions 310 adjacent to each other.

The barrier rib portion 310 may include a transparent material. The barrier rib portion 310 may include a material capable of transmitting light.

The barrier rib portion 310 may include a resin material. For example, the barrier rib portion 310 may include a photocurable resin material. For example, the barrier rib portion 310 may include a UV resin or a transparent photoresist resin. Alternatively, the barrier rib portion 310 may include urethane resin or acrylic resin.

The accommodating part 320 may be formed to partially penetrate the light conversion part 300 . Accordingly, the accommodating portion 320 may be disposed while contacting the adhesive layer 410 and spaced apart from the buffer layer 420 . Accordingly, a base portion 350 may be formed between the accommodating portion 320 and the buffer layer 420 .

A light conversion material 330 including light conversion particles 330a and a dispersion 330b in which the light conversion particles 330a are dispersed may be disposed in the accommodating part 320 .

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

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

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

The surface of the light conversion particle 330a may be charged and may have a polarity. For example, the surface of the light conversion particle 330a may be negatively charged. Accordingly, when voltage is applied, the light conversion particle 330a may move toward the first electrode 210 or the second electrode 220 .

The light transmittance of the accommodating part 320 may be changed by the light conversion particles 330a. In detail, the accommodating part 320 may be changed into a light blocking part and a light transmitting part by changing light transmittance by the light conversion particles 330a. That is, the accommodating part 330a may change light transmittance passing through the accommodating part 320 by dispersion and aggregation of the light conversion particles 330a disposed in the dispersion liquid 330b.

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

In detail, in the light path control member according to the embodiment, in the first mode, the accommodating part 320 becomes a light blocking part, and light of a specific angle may be blocked by the accommodating part 320 . That is, the viewing angle of the user looking from the outside is narrowed, so that the optical path control member can be driven in the privacy mode.

In addition, in the light path control member according to the embodiment, the accommodating part 320 becomes a light transmission part in the second mode, and in the optical path control member according to the first embodiment, the barrier rib part 310 and the accommodating part 320 ), all light can be transmitted. That is, the user's viewing angle from the outside is widened so that the optical path control member can be driven in the open mode.

The conversion from the first mode to the second mode, that is, the conversion of the accommodating part 320 from a light blocking part to a light transmitting part may be realized by the movement of the light conversion particles 330a of the accommodating part 320. can That is, the light conversion particle 330a has charges on its surface, and may move in the direction of the first electrode or the second electrode according to the application of voltage according to the characteristics of the charges.

For example, when no voltage is applied to the light path control member from the outside, the light conversion particles 330a of the accommodating part 320 are uniformly dispersed in the dispersion 330b, and accordingly, the accommodating part ( 320) may block light by the light conversion particles 330a. Accordingly, in the first mode, the accommodating part 320 may be driven as a light blocking part.

Also, when a voltage is applied to the light path control member from the outside, the light conversion particles 330a may move. For example, the light conversion particle 330a is moved toward one end or the other end of the accommodating part 320 by the voltage transmitted through the first electrode 210 and the second electrode 220. can That is, the light conversion particle 330a may move toward the first electrode 210 or the second electrode 220 .

For example, 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. and the light conversion particles 330a in a negatively charged state can move in the direction of the positive electrode of the first electrode 210 and the second electrode 220 using the dispersion liquid 330b as a medium.

For example, in the initial mode or when no voltage is applied to the first electrode 210 and/or the second electrode 220, as shown in FIG. Evenly dispersed in the inside, the accommodating part 320 can be driven as a light blocking part.

In addition, when a voltage is applied to the first electrode 210 and/or the second electrode 220, as shown in FIG. (220) direction, that is, the light conversion particle 330a is moved in one direction, and the accommodating part 320 can be driven as a light transmitting 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 desires to transmit light only at a specific viewing angle, the accommodating unit may be driven as a light blocking unit, or in an environment where the user requires a wide viewing angle and high luminance, a voltage may be applied to drive the accommodating unit as a light transmitting unit. there is.

Therefore, 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.

Referring to FIGS. 1 and 3 to 6 , the light path control member may include a sealing part. The sealing part may serve to seal the light conversion material disposed in the accommodating part 320 of the light conversion part 300 .

The sealing part may include a sealing part extending in a first direction 1A and a sealing part extending in a second direction 2A. For example, the sealing part may include a first sealing part 510 and a second sealing part 520 extending in the first direction 1A. The first sealing part 510 and the second sealing part 520 may face each other in the second direction 2A.

In addition, the sealing part may include a third sealing part 530 and a fourth sealing part 540 extending in the second direction 2A. The third sealing part 530 and the fourth sealing part 540 may be disposed facing each other in the first direction 1A.

The first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 may be disposed at an edge area of the light path control member.

In addition, the first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 may be connected to each other and disposed. In detail, the first sealing part 510, the second sealing part 520, the third sealing part 530 and the fourth sealing part 540 are connected to the second connection area CA2 and the second sealing part 540. Except for the open area OA for conducting the electrodes 220, they may be connected to each other and disposed.

The first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 are formed by forming cutting areas in the optical path control member 1000. It can be.

For example, the light path control member 1000 forms a cutting area by removing part or all of the second substrate 120, the second electrode 220, the buffer layer 420, and the light conversion unit 300, , The first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 may be disposed inside the cutting area.

At least one sealing part among the first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 is a part of the optical path control member 1000. It may be directly exposed to the outermost surface, for example, the first sealing part 510 may be directly exposed to the outermost surface of the light path control member 1000 . That is, one outermost side of the light path control member 1000 may include the first sealing part 510 .

Any one sealing part among the first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 may have a smaller width than the other sealing part. . In detail, the width of the first sealing part 510 disposed on the outermost side of the light path control member 1000 is the second sealing part 520, the third sealing part 530 and the fourth sealing part ( 540) may be smaller than the width.

That is, in order to form the first sealing part 510 to be disposed on the outermost side during the manufacturing process, a part of the first sealing part 510 may be cut and removed, thereby, the first sealing part 510 may be removed. The width of 510 may be smaller than the widths of the second sealing part 520 , the third sealing part 530 and the fourth sealing part 540 .

The first sealing part (510), the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 are placed in contact with both ends of the receiving part 320. Accordingly, the first sealing part (510), the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 are inside the accommodating part 320. It is possible to prevent the light conversion material 330 disposed on the outflow to the outside of the accommodating part 320 .

A material for forming the first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 includes a sealing material including a thermosetting resin material. can include Accordingly, a process of filling the cutting area with the sealing material and then curing it is required.

Accordingly, before the sealing material is cured, it may be mixed with the light conversion material disposed inside the accommodating part due to viscosity. Therefore, after curing the sealing material, the curing characteristics and color of a region in which only the sealing material is cured and a region in which the sealing material and the light conversion material are mixed may be different. Accordingly, the sealing characteristic of the sealing unit may be reduced, and the mixed area may be recognized as a stain from the outside, and thus the user's visibility may be reduced.

In order to solve the above problem, the light path control member according to the embodiment includes the first sealing part 510, the second sealing part 520, the third sealing part 530 and the fourth sealing part. At least one sealing part of 540 may be cured first, and then the light conversion material 330 may be filled in the receiving part 320 .

For example, one of the first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 is filled with a light conversion material. It may be cured first, and the three sealing parts may be cured after filling the light conversion material.

Alternatively, two sealing parts among the first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 are first filled with the light conversion material. After curing, the two sealing parts may be filled with a light conversion material and then cured.

Alternatively, three sealing parts among the first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 are first filled with the light conversion material. After curing, one sealing portion may be cured after filling the light conversion material.

For example, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 are first cured before filling the light conversion material, and the first sealing part 510 After filling the light conversion material first, it may be cured with a sealing material. That is, in three of the four sealing parts, the sealing material may be first cured to form the sealing part, and the light conversion material may be injected into the remaining one sealing part to inject the light conversion material, and then the sealing material may be cured.

That is, the cutting area where the first sealing part 510 is formed may be an injection part for injecting a light conversion material into the accommodating part 320 .

That is, in the light path control member according to the embodiment, at least one of the sealing parts may be filled with a light conversion material after the sealing material is cured. Accordingly, since mixing of the sealing material with the light conversion material while being cured can be prevented, curing characteristics of the sealing portion can be made uniform, and stains caused by mixing can be prevented, thereby improving user's visibility.

As described above, due to the difference in curing of the sealing materials of the first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540, the receiving part The arrangement area and size of the light conversion material and the sealing unit disposed therein may vary.

Hereinafter, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540 first cure the sealing material before filling the light conversion material, and the first sealing part ( 510), when the sealing material is cured after first filling the light conversion material, or when the second sealing part 520 and the third sealing part 530 first cure the sealing material before filling the light conversion material. and the first sealing part 510 and the fourth sealing part 540 are first filled with a light conversion material and then the sealing material is cured.

7 are diagrams for explaining the arrangement of a light conversion material and a sealing part disposed inside the accommodating part. In detail, FIG. 7 shows that in the second sealing part 520, the third sealing part 530, and the fourth sealing part 540, the sealing material is cured first before filling the light conversion material, and the first sealing part 520 is cured. Section 510 is a diagram illustrating a case in which the sealing material is cured after the light conversion material is first filled.

Referring to FIG. 7 , the accommodating part 320 may be sealed by a first sealing part 510 and a second sealing part 520 .

The first sealing portion 510 may be cured after the light conversion material 330 is filled in the accommodating portion 320, and the second sealing portion 520 may be cured when the light conversion material 330 is filled in the accommodating portion. It may be cured prior to filling into (320).

Accordingly, the first sealing part 510 and the second sealing part 520 may be disposed in different shapes.

The first sealing part 510 may include a region where the width of the first sealing part 510 is narrowed. In detail, the first sealing portion 510 may include a region where the width of the first sealing portion 510 is narrowed while extending from the second substrate 120 toward the first substrate 110 . .

Since the sealing material flows into the first sealing part 510 while the light conversion material 330 is filled in the accommodating part 320, the light conversion material 330 having fluidity may enter the accommodating part. When the space is small and the light conversion material and the sealing material contact each other, the light conversion material may push the sealing material outward. Accordingly, a region in which the width of the first sealing portion 510 becomes narrow after the sealing material is cured may be formed.

Accordingly, the first sealing part 510 may include a narrowing area and/or a narrowing area extending from the second substrate 120 toward the first substrate 110 direction.

The second sealing part 520 may include a region where the width of the second sealing part 520 is widened. In detail, the second sealing part 520 may include a region where the width of the second sealing part 520 is widened while extending from the second substrate 120 toward the first substrate 110. .

Since the sealing material flows into the second sealing part 520 before the light conversion material 330 is filled in the containing part 320, the sealing material having fluidity flowing through the cutting area moves toward the inside of the containing part 520. It can be placed while moving. As a result, the second sealing portion 520 may be formed with a wider area after the sealing material is cured. For example, the second sealing portion 520 may be formed to gradually widen in a direction from the second substrate 120 to the first substrate 110 after the sealing material is cured.

In addition, the second sealing part 520 may also include a narrowing area, and at this time, the length of the area where the width of the second sealing part 520 is narrowing is the length of the first sealing part 510. The width may be smaller than the length of the narrowing region.

Also, the first sealing part 510 and the second sealing part 520 may be disposed in different lengths in the receiving part.

In detail, the first length L1 of the first sealing part 510 disposed inside the accommodating part 320 is the second length L1 of the second sealing part 520 disposed inside the accommodating part 320. It may be smaller than (L3). Here, the first length and the second length may each be defined as the maximum length disposed inside the accommodating part 320 .

Since the sealing material flows into the first sealing part 510 while the light conversion material 330 is filled in the accommodating part 320, the light conversion material 330 having fluidity may enter the accommodating part. When the space is small and the light conversion material and the sealing material contact each other, the light conversion material may push the sealing material outward.

On the other hand, since the sealing material flows into the second sealing part 520 before the light conversion material 330 is filled in the containing part 320, the sealing material having fluidity passes through the cutting area to the inside of the containing part. can move in either direction. That is, since the sealing material flows into the accommodating part 320 in a state where the accommodating part 320 is empty, it can be introduced in a sufficient length.

Accordingly, the length L1 of the first sealing part 510 disposed inside the accommodating part 320 is equal to the length L2 of the second sealing part 520 disposed inside the accommodating part 320. may be smaller than

The light path control member according to the embodiment may be formed by curing the sealing portion before injecting the light conversion material into other regions, except for the region into which the light conversion material is injected.

That is, except for the first sealing part into which the light conversion material is injected, the second sealing part, the third sealing part, and the fourth sealing part may cure the sealing material before injecting the light conversion material to form a cured sealing part. .

Therefore, since the light conversion material is injected into the second sealing part, the third sealing part, and the fourth sealing part after the sealing part is cured, the second sealing part, the third sealing part, and the fourth sealing part have improved hardening. Since it has properties, it can have improved sealing properties.

In addition, since the second sealing part, the third sealing part, and the fourth sealing part are not mixed with a light conversion material or the like during a curing process, it is possible to prevent stains caused by the light conversion material, thereby improving user visibility.

In addition, although the first sealing part is formed by injecting a light conversion material and then curing the sealing material, since the width of the first sealing part is smaller than that of the other sealing parts, it is possible to minimize the appearance of stains from the outside.

8 to 10 are diagrams for explaining the arrangement of a light conversion material and a sealing part disposed inside the accommodating part. 8 is another top view of a second substrate in which a first substrate and a second substrate of an optical path control member according to an embodiment are laminated, and FIGS. 9 and 10 show the second sealing part 520 and In the third sealing part 530, the sealing material is first cured before filling the light conversion material, and after the first sealing part 510 and the fourth sealing part 540 are filled with the light conversion material first, These are cross-sectional views of the case of hardening the sealing material.

Referring to FIG. 8 , the accommodating part 320 may be placed in contact with all of the first sealing part 510, the second sealing part 520, the third sealing part 530, and the fourth sealing part 540. can

For example, both ends of at least one accommodating part 320 among a plurality of accommodating parts may contact the first sealing part 510 and the third sealing part 530 . Also, both ends of at least one other accommodating part 320 of the plurality of accommodating parts may contact the first sealing part 510 and the second sealing part 520 . Also, both ends of at least one of the plurality of accommodating portions 320 may contact the second sealing portion 520 and the fourth sealing portion 540 .

Therefore, the sealing part to which both ends of one of the plurality of accommodating parts 320 come into contact may be the same as or different from the sealing part to which both ends of the other accommodating part 320 come into contact.

That is, since the light conversion material is injected in the cutting area where the first sealing part 510 and the fourth sealing part 540 are formed, the tilting angle of the receiving part 320 can be adjusted in various ways.

Accordingly, it is possible to control the tilting angle of the accommodating unit in various ways according to the device and environment to which the light path control member is applied.

Referring to FIGS. 8 and 9 , the accommodating part 320 may be sealed by a first sealing part 510 and a third sealing part 530 .

The first sealing portion 510 may be cured after the light conversion material 330 is filled in the accommodating portion 320, and the third sealing portion 530 may be cured when the light conversion material 330 is filled in the accommodating portion. It can be cured before being filled in 320

Accordingly, the first sealing part 510 and the third sealing part 530 may be disposed in different shapes.

The first sealing part 510 may include a region where the width of the first sealing part 510 is narrowed. In detail, the first sealing portion 510 may include a region where the width of the first sealing portion 510 is narrowed while extending from the second substrate 120 toward the first substrate 110 . .

Since the sealing material flows into the first sealing part 510 while the light conversion material 330 is filled in the accommodating part 320, the light conversion material 330 having fluidity may enter the accommodating part. When the space is small and the light conversion material and the sealing material contact each other, the light conversion material may push the sealing material outward. Accordingly, a region in which the width of the first sealing portion 510 becomes narrow after the sealing material is cured may be formed.

Accordingly, the first sealing part 510 may include a narrowing area and/or a narrowing area extending from the second substrate 120 toward the first substrate 110 direction.

The third sealing part 530 may include a region where the width of the third sealing part 530 is widened. In detail, the third sealing portion 530 may include a region in which the width of the third sealing portion 530 is widened while extending from the second substrate 120 toward the first substrate 110 . .

Since the sealing material is introduced into the third sealing part 530 before the light conversion material 330 is filled in the receiving part 320, the sealing material having fluidity flowing through the cutting area moves toward the inside of the receiving part 530. It can be placed while moving. As a result, the third sealing part 530 may be formed with a widened area after the sealing material is hardened. For example, the third sealing portion 530 may be formed to gradually widen in a direction from the second substrate 120 to the first substrate 110 after the sealing material is cured.

In addition, the third sealing part 530 may also include a narrowing area, and at this time, the length of the area where the width of the third sealing part 530 is narrowing is the length of the first sealing part 510. The width may be smaller than the length of the narrowing region.

In addition, the first sealing part 510 and the third sealing part 530 may be disposed in different lengths in the receiving part.

In detail, the first length L1 of the first sealing part 510 disposed inside the accommodating part 320 is the third length L1 of the third sealing part 530 disposed inside the accommodating part 320. It may be smaller than (L3). Here, the first length and the third length may each be defined as the maximum length disposed inside the accommodating part 320 .

Since the sealing material flows into the first sealing part 510 while the light conversion material 330 is filled in the accommodating part 320, the light conversion material 330 having fluidity may enter the accommodating part. When the space is small and the light conversion material and the sealing material contact each other, the light conversion material may push the sealing material outward.

On the other hand, since the sealing material flows into the third sealing part 530 before the light conversion material 330 is filled in the accommodating part 320, the sealing material having fluidity passes through the cutting area into the accommodating part. can move in either direction. That is, since the sealing material flows into the accommodating part 320 in a state where the accommodating part 320 is empty, it can be introduced in a sufficient length.

Accordingly, the length L1 of the first sealing part 510 disposed inside the accommodating part 320 is equal to the length L3 of the third sealing part 530 disposed inside the accommodating part 320. may be smaller than

An air gap area AG may be formed outside the third sealing part 530 . That is, an air gap AG may be formed on a surface opposite to one surface of the third sealing part 530 contacting the light conversion material 300 .

That is, since the light conversion material 330 is disposed after the third sealing part 530 is first cured and formed, the light conversion material 300 is not disposed outside the third sealing part 530. may not be

Accordingly, unnecessary light conversion materials may be prevented from being disposed outside the third sealing portion 530 that is the bezel area.

Referring to FIGS. 8 and 10 , the accommodating part 320 may be sealed by the second sealing part 520 and the fourth sealing part 540 .

The second sealing part 520 may be cured before the light conversion material 330 is filled in the accommodating part 320, and the fourth sealing part 540 may cause the light conversion material 330 to be hardened into the accommodating part. It can be cured after being filled in 320.

Accordingly, the second sealing part 520 and the fourth sealing part 540 may be disposed in different shapes.

The fourth sealing part 540 may include a region where the width of the fourth sealing part 540 is narrowed. In detail, the fourth sealing portion 540 may include a region where the width of the fourth sealing portion 540 is narrowed while extending from the second substrate 120 toward the first substrate 110 . .

Since the sealing material flows into the fourth sealing part 540 while the light conversion material 330 is filled in the accommodating part 320, the light converting material 330 having fluidity may enter the accommodating part. When the space is small and the light conversion material and the sealing material contact each other, the light conversion material may push the sealing material outward. As a result, the fourth sealing portion 540 may form a narrower area after the sealing material is cured.

Accordingly, the fourth sealing portion 540 may include a narrowing area and/or a narrowing area extending from the second substrate 120 toward the first substrate 110 direction.

The second sealing part 520 may include a region where the width of the second sealing part 520 is widened. In detail, the second sealing part 520 may include a region where the width of the second sealing part 520 is widened while extending from the second substrate 120 toward the first substrate 110. .

Since the sealing material flows into the second sealing part 520 before the light conversion material 330 is filled in the containing part 320, the sealing material having fluidity flowing through the cutting area moves toward the inside of the containing part 520. It can be placed while moving. As a result, the second sealing portion 520 may be formed with a wider area after the sealing material is cured. For example, the second sealing portion 520 may be formed to gradually widen in a direction from the second substrate 120 to the first substrate 110 after the sealing material is cured.

In addition, the second sealing part 520 may also include a narrowing area, and at this time, the length of the area where the width of the second sealing part 520 is narrowing is the length of the fourth sealing part 540. The width may be smaller than the length of the narrowing region.

In addition, the second sealing part 520 and the fourth sealing part 540 may be disposed in different lengths in the receiving part.

In detail, the second length L2 of the second sealing part 520 disposed inside the accommodating part 320 is the fourth length L2 of the fourth sealing part 540 disposed inside the accommodating part 320. It can be greater than (L3). Here, the second length and the fourth length may each be defined as the maximum length disposed inside the accommodating part 320 .

Since the sealing material flows into the fourth sealing part 540 while the light conversion material 330 is filled in the accommodating part 320, the light converting material 330 having fluidity may enter the accommodating part. When the space is small and the light conversion material and the sealing material contact each other, the light conversion material may push the sealing material outward.

On the other hand, since the sealing material flows into the second sealing part 520 before the light conversion material 330 is filled in the containing part 320, the sealing material having fluidity passes through the cutting area to the inside of the containing part. can move in either direction. That is, since the sealing material flows into the accommodating part 320 in a state where the accommodating part 320 is empty, it can be introduced in a sufficient length.

Accordingly, the second length L2 of the second sealing part 520 disposed inside the accommodating part 320 is the fourth length L2 of the fourth sealing part 540 disposed inside the accommodating part 320. It may be larger than the length L4.

An air gap area AG may be formed outside the fourth sealing part 540 . That is, an air gap AG may be formed on a surface opposite to one surface of the fourth sealing part 530 contacting the light conversion material 300 .

That is, since the light conversion material 330 is disposed after the fourth sealing part 540 is first cured and formed, the light conversion material 300 is not disposed outside the fourth sealing part 540. may not be

Accordingly, unnecessary light conversion materials may be prevented from being disposed outside the fourth sealing portion 540 that is the bezel area.

The light path control member according to the embodiment may be formed by curing the sealing portion before injecting the light conversion material into other regions, except for the region into which the light conversion material is injected.

That is, except for the first sealing part and the fourth sealing part into which the light conversion material is injected, the second sealing part and the third sealing part may cure the sealing material before injecting the light conversion material to form a cured sealing part. .

Therefore, since the light conversion material is injected into the second sealing part and the third sealing part after the sealing part is cured, the second sealing part and the third sealing part have improved curing characteristics, and thus may have improved sealing characteristics.

In addition, since the second sealing part and the third sealing part are not mixed with a light conversion material or the like during a curing process, it is possible to prevent stains caused by this, thereby improving user's visibility.

In addition, although the first sealing part is formed by injecting a light conversion material and then curing the sealing material, since the width of the first sealing part is smaller than that of the other sealing parts, it is possible to minimize the appearance of stains from the outside.

In addition, the fourth sealing part is formed by injecting the light conversion material and then curing the sealing material, but since the light conversion material can be injected through the fourth sealing part, the tilting angle of the receiving part can be set to various size ranges.

below. Referring to FIGS. 11 to 15 , a display device and a display device to which the light path control member according to the exemplary embodiment is applied will be described.

Referring to FIGS. 11 and 12 , the light path control member 1000 according to the exemplary embodiment may be disposed on or below the display panel 2000 .

The display panel 2000 and the light path control member 1000 may be disposed while being adhered to each other. For example, the display panel 2000 and the light path control member 1000 may be adhered 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 bonding the light path member and the display panel, the light path control member and the display panel may be bonded after removing the release film.

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 light path control member may be formed below the liquid crystal panel. That is, when a surface viewed by a user on the liquid crystal panel is defined as an upper portion of the liquid crystal panel, the light path control member may be disposed below the liquid crystal panel. In the display panel 2000, a first substrate 2100 including a thin film transistor (TFT) and a pixel electrode and a second substrate 2200 including color filter layers are bonded with a liquid crystal layer interposed therebetween. structure can be formed.

In addition, in the display panel 2000, a thin film transistor, a color filter, and a black electrolyte are formed on a 1' substrate 2100, and a 2' substrate 2200 is formed on the 1' substrate 2100 with a liquid crystal layer interposed therebetween. It may also be a liquid crystal display panel of a COT (color filter on transistor) structure bonded with the. 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. In addition, a pixel electrode contacting the thin film transistor is formed on the first substrate 2100 . At this time, in order to improve the aperture ratio and simplify the mask process, the black electrolyte may be omitted and the common electrode may be formed to serve as the black electrolyte.

In addition, when the display panel 2000 is a liquid crystal display panel, the display device may further include a backlight unit 3000 providing light from a rear surface of the display panel 2000 .

That is, as shown in FIG. 11 , the light path control member is disposed below the liquid crystal panel and above the backlight unit 3000, and the light path control member is disposed between the backlight unit 3000 and the display panel 2000. can be placed in

Alternatively, as shown in FIG. 12 , when the display panel 2000 is an organic light emitting diode panel, the light path control member may be formed above the organic light emitting diode panel. That is, when a surface viewed by a user on an organic light emitting diode panel is defined as an upper portion of the organic light emitting diode panel, the light path control member may be disposed above the organic light emitting diode panel. The display panel 2000 may include a self-light emitting device that does not require a separate light source. In the display panel 2000 , a thin film transistor may be formed on a 1′ substrate 2100 , and an organic light emitting element contacting the thin film transistor may be formed. The organic light emitting diode may include an anode, a cathode, and an organic light emitting layer formed between the anode and the cathode. In addition, a 2' substrate 2200 serving as an encapsulation substrate for encapsulation may be further included on the organic light emitting device.

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

In addition, an additional functional layer 1300 such as an antireflection layer or an antiglare may be further disposed on the light path control member 1000 . In detail, the functional layer 1300 may be bonded to one surface of the first substrate 110 of the light path control member. Although not shown in the drawing, the functional layer 1300 may be adhered to the first substrate 110 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 .

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

Although the light path control member is illustrated as being disposed on the upper part of the display panel, the embodiment is not limited thereto, and the light control member is located at a position where light can be adjusted, that is, the lower part of the display panel or the display panel. It may be disposed in various positions, such as between the second substrate and the first substrate.

In addition, although the light conversion unit of the light path control member according to the embodiment is shown in a direction parallel or perpendicular to the outer surface of the second substrate in the drawing, the light conversion unit may be formed to be inclined at a predetermined angle with the outer surface of the second substrate. may be Accordingly, a moire phenomenon occurring between the display panel and the light path control member may be reduced.

Referring to FIGS. 13 to 15 , the light path control member according to the exemplary embodiment may be applied to various display devices.

Referring to FIGS. 13 to 15 , the light path control member according to the embodiment may be applied to a display device displaying a display.

For example, when power is applied to the light path control member as shown in FIG. 13, the accommodating part functions as a light transmitting part, so that the display device can be driven in open mode, and power is applied to the light path control member as shown in FIG. 14. When not applied, the accommodating portion functions as a light blocking portion, and the display device may be driven in a light blocking mode.

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

Light emitted from the backlight unit or the self-light emitting element may move in a direction from the first substrate to the second substrate. Alternatively, light emitted from the backlight unit or the self-light emitting device may also move in a direction from the second substrate to the first substrate.

Also, referring to FIG. 15 , 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 information about the vehicle and an image for checking the movement path of the vehicle. The display device may be disposed between a driver's seat and a front passenger's seat of a vehicle.

In addition, the light path control member according to the embodiment may be applied to an instrument panel displaying vehicle speed, engine, and warning signals.

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

The features, structures, effects, etc. described in the foregoing 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, etc. illustrated in each embodiment can be combined or modified with respect to other embodiments by those skilled in the art in the field to which the embodiments belong. Therefore, contents related to these combinations and variations should be construed 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 field to which the present invention belongs can exemplify the above to the extent that does not deviate from the essential characteristics of the present embodiment. It will be seen that various variations and applications that have not been made are possible. For example, each component specifically shown in the embodiments can be modified and implemented. And differences related to these variations and applications should be construed as being included in the scope of the present invention as defined in the appended claims.

Claims (15)

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;
A light conversion unit disposed between the first electrode and the second electrode,
a first sealing part and a second sealing part formed in a cutting area formed by cutting the second substrate, the second electrode, and the light conversion part and extending in a first direction;
A third sealing part and a fourth sealing part formed in a cutting area formed by cutting the second substrate, the second electrode, and the light conversion part and extending in a second direction different from the first direction,
At least one sealing portion of the first sealing portion, the second sealing portion, the third sealing portion, and the fourth sealing portion includes a region in which a width is narrowed while extending from the second substrate toward the first substrate; ,
The other sealing part of at least one of the first sealing part, the second sealing part, the third sealing part, and the fourth sealing part includes a region in which a width is narrowed while extending from the second substrate toward the first substrate. an optical path control member that does. According to claim 1,
The light conversion unit includes a plurality of accommodating portions and a plurality of barrier rib portions between the accommodating portions,
One end and the other end of the accommodating part contact the first sealing part and the second sealing part. According to claim 2,
The light path control member of claim 1 , wherein the first sealing portion includes a region extending from the second substrate toward the first substrate and narrowing in width. According to claim 2,
The first sealing part and the second sealing part are disposed inside the receiving part,
The optical path control member of claim 1 , wherein a length of the first sealing part disposed inside the accommodating part is different from a length of the second sealing part disposed inside the accommodating part. According to claim 4,
The light path control member of claim 1 , wherein a length of the first sealing part disposed inside the accommodating part is smaller than a length of the second sealing part disposed inside the accommodating part. According to claim 2,
The optical path control member of claim 1 , wherein a width of the first sealing portion is smaller than widths of the second sealing portion, the third sealing portion, and the fourth sealing portion. According to claim 1,
The light conversion unit includes a plurality of accommodating portions and a plurality of barrier rib portions between the accommodating portions,
One end and the other end of the accommodating part contact the first sealing part, the second sealing part, the third sealing part, and the fourth sealing part. According to claim 7,
At least one accommodating part of the plurality of accommodating parts is in contact with the first sealing part and the second sealing part,
At least one other accommodating part of the plurality of accommodating parts is in contact with the first sealing part and the third sealing part,
The light path control member of claim 1 , wherein another at least one accommodating part of the plurality of accommodating parts contacts the second sealing part and the fourth sealing part. According to claim 7,
The light path control member of claim 1 , wherein the first sealing part and the fourth sealing part include a region having a narrow width while extending from the second substrate toward the first substrate. According to claim 7,
At least one accommodating part of the plurality of accommodating parts is in contact with the first sealing part and the second sealing part,
The first sealing part and the second sealing part are disposed inside the receiving part,
The light path control member of claim 1 , wherein a length of the first sealing part disposed inside the accommodating part is smaller than a length of the second sealing part disposed inside the accommodating part. According to claim 7,
At least one accommodating part of the plurality of accommodating parts is in contact with the first sealing part and the third sealing part,
The first sealing part and the third sealing part are disposed inside the accommodating part,
The optical path control member of claim 1 , wherein a length of the first sealing part disposed inside the accommodating part is smaller than a length of the third sealing part disposed inside the accommodating part. According to claim 7,
At least one accommodating part of the plurality of accommodating parts is in contact with the second sealing part and the fourth sealing part,
The second sealing part and the fourth sealing part are disposed inside the accommodating part,
The light path control member of claim 1 , wherein a length of the second sealing part disposed inside the accommodating part is greater than a length of the fourth sealing part disposed inside the accommodating part. a panel including at least one of a display panel and a touch panel; and
A display device comprising the light path control member of any one of claims 1 to 12 disposed on or under the panel. According to claim 13,
The panel includes a backlight unit and a liquid crystal display panel,
The light path control member is disposed between the backlight unit and the liquid crystal display panel,
The light emitted from the backlight unit moves in a direction from the first substrate to the second substrate. According to claim 13,
The panel includes an organic light emitting diode panel,
The light path control member is disposed on the organic light emitting diode panel,
The display device of claim 1 , wherein light emitted from the panel moves in a direction from the first substrate to the second substrate.

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