Light path control component and display device including the light path control component

Abstract

The optical path control component of the embodiment includes: a first substrate; a first electrode, which is arranged on the first substrate; a second substrate, which is arranged on the first substrate; a second electrode, which is arranged under the second substrate; and a light conversion part, which is arranged between the first electrode and the second electrode, wherein the light conversion part includes a plurality of partition wall parts and a plurality of receiving parts which are alternately arranged, and a light conversion material containing a dispersion liquid and a plurality of light conversion particles dispersed in the dispersion liquid is arranged in the receiving part, and the dispersion liquid contains a material having a carbon atom number of 2 to 13.

Description

Technical Field

[0001] Embodiments relate to a light path control member and a display device including the light path control member. Background Art

[0002] The shading film blocks the transmission of light from a light source and is attached to the front of a display panel of a display device such as a mobile phone, a laptop computer, a tablet computer, a vehicle navigation device, a vehicle touch screen, etc., so that when the display sends a picture, the shading film adjusts the viewing angle of the light according to the incident angle of the light, thereby presenting clear image quality at the viewing angle required by the user.

[0003] In addition, the light-shielding film can be used for car windows, buildings, etc. to partially block external light, thereby preventing glare or preventing the interior from being seen from the outside.

[0004] That is, the light shielding film can control the moving path of light so as to block light in a specific direction and transmit light in a specific direction. Therefore, the light transmission angle can be controlled by the light shielding film, thereby controlling the user's viewing angle.

[0005] Meanwhile, such shading films can be divided into shading films that can always control the viewing angle regardless of the surrounding environment or the user's environment and shading films that allow the user to turn on or off the viewing angle control according to the surrounding environment or the user's environment.

[0006] Such a switchable light-shielding film can be realized by filling a receiving portion with particles that can move when a voltage is applied and a dispersion liquid for dispersing the particles, and dispersing and aggregating the particles, thereby converting the receiving portion into a light-transmitting portion and a light-shielding portion.

[0007] That is, the switchable light shielding film may include a plurality of containers filled with a dispersion in order to change the light path.

[0008] As described above, the pattern is formed by filling the viscous dispersion liquid. Therefore, there is a problem that the dispersion liquid flows out to the outside when the switchable light shielding film is being used, or impurities penetrate into the dispersion liquid, so that the driving characteristics and reliability of the switchable light shielding film are deteriorated.

[0009] In addition, when the switchable shading film is combined with a display panel and used as a display device, the pattern of the switchable shading film and the pattern of the display panel may overlap, resulting in a moire phenomenon. Therefore, when a user uses the display device, there is a problem that visibility is deteriorated due to the moire.

[0010] Therefore, there is a need for an optical path control component having a new structure that can solve the above problems. Summary of the invention

[0011] Technical issues

[0012] The embodiment relates to a light path control member having improved visibility and reliability and a display device including the same.

[0013] Technical Solution

[0014] According to one embodiment, a light path control component includes: a first substrate; a first electrode, which is arranged on the first substrate; a second substrate, which is arranged on the first substrate; a second electrode, which is arranged under the second substrate; and a light conversion part, which is arranged between the first electrode and the second electrode, wherein the light conversion part includes a plurality of partition wall parts and a plurality of receiving parts which are alternately arranged, and a light conversion material containing a dispersion liquid and a plurality of light conversion particles dispersed in the dispersion liquid is arranged in the receiving part, and the dispersion liquid contains a material with a carbon atom number of 2 to 13.

[0015] Beneficial Effects

[0016] In the light path control member of the first embodiment, first, second, third and fourth cutting portions passing through all or part of the second substrate, the second electrode, the buffer layer and the light conversion part may be formed on the second substrate.

[0017] Furthermore, a first sealing portion and a second sealing portion may be provided in the first cutting portion, the second cutting portion, the third cutting portion, and the fourth cutting portion, respectively.

[0018] The first sealing portion and the second sealing portion are provided to seal an inlet and an outlet of the receiving portion receiving the light conversion material, and extend along a side region (ie, a side region in a first direction) of the light conversion portion.

[0019] Therefore, the first sealing portion can prevent the light conversion material in the accommodation portion from flowing out to the outside of the light conversion portion, and the first sealing portion and the second sealing portion can prevent impurities from penetrating into the light conversion portion from the outside, thereby improving the reliability of the light path control member.

[0020] In addition, since the first sealing portion and the second sealing portion are arranged in the cutting portion formed on the second substrate, compared with forming the first sealing portion and the second sealing portion outside the light conversion portion, the size of the light path control component can be reduced, and the sealing performance of the light path control component can be improved by preventing the sealing component material from being degraded by the external environment.

[0021] In addition, in the light path control member of the first embodiment, the first connection electrode may be provided on the first protrusion, and the second connection electrode may be provided on the second protrusion formed on the second substrate.

[0022] The surfaces of the first substrate and the second substrate may not completely protrude, and the first protrusion and the second protrusion may protrude only in regions where the first connection region and the second connection electrode are formed.

[0023] Therefore, when the light path control member is connected to the display panel and applied to the display device, other components of the display device can be arranged in the area not corresponding to the first protrusion and the second protrusion, thereby reducing the frame area of ​​the display device.

[0024] That is, the light path control member of the first embodiment reduces the size of the frame area where the connection electrode is provided, thereby reducing the frame area of ​​the display device to which the light path control member is applied.

[0025] In addition, in the optical path control member of the first embodiment, a plurality of cutting portions are provided on the second substrate, and electrode connecting portions are provided in the cutting portions to form second connecting electrodes, so that the first connecting electrodes and the second connecting electrodes are provided on the same plane.

[0026] Therefore, the first connection electrode and the second connection electrode can be easily connected to the printed circuit board.

[0027] Furthermore, by forming the cutting portion provided with a plurality of electrode connecting portions, the contact area between the electrode connecting portion and the second electrode can be increased, thereby improving the electrical connection characteristics between the electrode connecting portion and the second electrode.

[0028] In the light path control member of the second embodiment, the accommodation portion may be provided by inclining the accommodation portion at an inclination angle of a predetermined size with respect to the second direction of the substrate.

[0029] Therefore, when the light path control member is combined with the display panel to form a display device, the occurrence of a moiré phenomenon caused by the overlap of the pattern of the receiving portion of the light path control member and the pixel pattern of the display panel can be prevented.

[0030] Therefore, when a user views the display device from the outside, it is possible to prevent a pattern from being seen due to a moiré phenomenon caused by an overlap of a pattern of the accommodation portion of the light path control member and a pixel pattern of the display panel.

[0031] In addition, in the light path control member of the second embodiment, the depths of the cut portions defined as the entrance portion or the exit portion among the plurality of cut portions may be formed differently in the respective regions.

[0032] Therefore, when the photoconversion material is injected into the inlet region, the moving path of the photoconversion material can be increased, thereby facilitating the injection of the photoconversion material. In addition, by increasing the contact area of ​​the first sealing portion disposed in the cutting portion, the adhesion of the first sealing portion can be improved.

[0033] Furthermore, the light path control member of the second embodiment can prevent the optical conversion material from flowing out to the side of the light path control member as the accommodation portion is inclined.

[0034] That is, since the first sealing portion and the second sealing portion are arranged at the ends of the light path control member in the first direction and the second direction to seal the optical conversion material in the accommodation portion, the outflow of the optical conversion material to the outside or the penetration of external impurities into the optical conversion material can be minimized.

[0035] In addition, by forming a region where the seal and the optical conversion material are mixed, the adhesion of the seal can be improved by the anchor effect. Therefore, the adhesion of the seal can be improved to prevent delamination, thereby improving the reliability and sealing of the optical path control member.

[0036] Furthermore, the light path control member of the present embodiment includes light conversion particles that move according to application of voltage and a dispersion liquid that has a low viscosity and disperses the light conversion particles.

[0037] That is, the dispersion liquid includes a dispersion liquid having the number of carbon atoms within a specific range, and thus the viscosity of the dispersion liquid can be reduced.

[0038] Therefore, it is possible to increase the mobility of the light conversion particles moving in the dispersion liquid, and increase the driving speed of the light path control member by increasing the mobility of the light conversion particles.

[0039] Furthermore, since the light path control member of the present embodiment improves fluidity by realizing a dispersion liquid having a low viscosity, when the light conversion material including the dispersion liquid is filled into the accommodation portion, the filling speed can be increased, thereby improving process efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a perspective view of the light path control member of the first embodiment.

[0041] Figure 2 is a top view of the first substrate of the light path control member of the first embodiment.

[0042] Figure 3 is a top view of the second substrate of the light path control member of the first embodiment.

[0043] Figure 4 1 is a top view of the second substrate after the first substrate and the second substrate of the light path control member of the first embodiment are stacked.

[0044] Figure 5 and Figure 6 is along Figure 1 Cross-sectional view taken along line AA′.

[0045] Figures 7 to 9 is along Figure 1 Cross-sectional view taken along line BB′.

[0046] Fig.10 is along Figure 1 Cross-sectional view taken along line CC′.

[0047] Fig.11 is along Figure 1 Cross-sectional view taken along line DD′.

[0048] Fig.12 is along Figure 1 Cross-sectional view taken along line EE′.

[0049] Fig.13 is along Figure 1 Cross-sectional view taken along line FF′.

[0050] Fig.14 is along Figure 1 A cross-sectional view taken along line GG′.

[0051] Fig.15 and Fig.16 is along Figure 1 A cross-sectional view taken along line HH′.

[0052] Fig.17 is along Figure 1 A cross-sectional view taken along line II′.

[0053] Fig.18 It is a perspective view of the light path control member of the second embodiment.

[0054] Fig.19 is a top view of the first substrate of the light path control member of the second embodiment.

[0055] Fig. 20 1 is a top view of the second substrate of the light path control member of the second embodiment.

[0056] Fig.21 1 is a top view of the second substrate after the first substrate and the second substrate of the light path control member of the second embodiment are stacked.

[0057] Fig. 22 is along Fig.18 Cross-sectional view taken along line JJ′.

[0058] Fig.23 is along Fig.18 Cross-sectional view taken along line KK′.

[0059] Fig.24 is along Fig.18 A cross-sectional view taken along line LL′.

[0060] Fig.25 FIG. 1 is a diagram for explaining a driving speed depending on the viscosity of a dispersion liquid in an optical path control member according to an embodiment.

[0061] Fig.26 1 is a diagram for explaining the viscosity of the dispersion liquid depending on the mixing condition of the dispersion liquid of the light path control member according to this embodiment.

[0062] Fig. 27 and Fig.28 is a cross-sectional view of a display device to which an optical path control member according to an embodiment is applied.

[0063] Figure 29 to Figure 31 It is a view for explaining one embodiment of a display device to which the light path control member of this embodiment is applied. DETAILED DESCRIPTION

[0064] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the spirit and scope of the present invention are not limited to the described partial embodiments, but can also be implemented in a variety of other forms, and one or more elements in the embodiments can be selectively combined and replaced within the spirit and scope of the present invention.

[0065] In addition, unless otherwise defined and explained, the terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having the same meaning as understood by ordinary technicians in the technical field to which the present invention belongs. For example, the terms defined in commonly used dictionaries may be interpreted as being consistent with their meanings in the context of the relevant technical field.

[0066] In addition, the terms used in the embodiments of the present invention are for describing the embodiments rather than for limiting the present invention. In this specification, a singular form may also include a plural form, unless otherwise explicitly stated in a phrase, and when described as "at least one (or more) of A (and), B and C", at least one of all combinations of A, B and C may be included.

[0067] In addition, when describing the elements of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish these elements from other elements, and do not limit the nature, order, or sequence of these elements.

[0068] In addition, when an element is described as being “connected” or “coupled” to another element, it may include not only the case where the element is directly “connected” or “coupled” to the other element, but also the case where the element is “connected” or “coupled” through another element between the element and the other elements.

[0069] In addition, when described as being formed or arranged "on" or "under" each element, "on" or "under" may include not only the case where the two elements are directly connected, but also the case where one or more other elements are formed or arranged between the two elements.

[0070] Furthermore, when expressed as “upper (above)” or “lower (below)”, not only an upward direction but also a downward direction may be included based on one element.

[0071] Hereinafter, an optical path control member of one embodiment is described with reference to the accompanying drawings. The optical path control member described below relates to a switchable optical path control member driven in various modes according to electrophoretic particles moving by applying a voltage.

[0072] In the following, reference is made to Figures 1 to 17 , describing the light path control member of the first embodiment.

[0073] Reference Figures 1 to 17 The light path control member 1000 of the first embodiment may include a first substrate 110 , a second substrate 120 , a first electrode 210 , a second electrode 220 , and a light conversion part 300 .

[0074] The first substrate 110 may support the first electrode 210. The first substrate 110 may be rigid or flexible.

[0075] In addition, the first substrate 110 may be transparent. For example, the first substrate 110 may include a transparent substrate capable of transmitting light.

[0076] The first substrate 110 may include glass, plastic or a flexible polymer film. For example, the flexible polymer film may be made of any of the following materials: polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyether sulfone (PES), cyclic olefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS), which is just an example, but the embodiment is not limited thereto.

[0077] In addition, the first substrate 110 may be a flexible substrate having a flexible property.

[0078] In addition, 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 flexible, curved or bent characteristics. Therefore, the light path control member of this embodiment may be changed to various designs.

[0079] The first substrate 110 may extend in the first direction 1A, the second direction 2A, and the third direction 3A.

[0080] Specifically, the first substrate 110 may include a first direction 1A corresponding to the length or width direction of the first substrate 110, a second direction 2A extending in a direction different from the first direction 1A and corresponding to the length or width direction of the first substrate 110, and a third direction 3A extending in a direction different from the first direction 1A and the second direction 2A and corresponding to the thickness direction of the first substrate 110.

[0081] For example, the first direction 1A may be defined as the length direction of the first substrate 110, the second direction 2A may be defined as the width direction of the first substrate 110 perpendicular to the first direction 1A, and the third direction 3A may be defined as the thickness direction of the first substrate 110. Alternatively, the first direction 1A may be defined as the width direction of the first substrate 110, the second direction 2A may be defined as the length direction of the first substrate 110 perpendicular to the first direction 1A, and the third direction 3A may be defined as the thickness direction of the first substrate 110.

[0082] Hereinafter, for convenience of description, the first direction 1A will be described as the length direction of the first substrate 110 , the second direction 2A will be described as the width direction of the first substrate 110 , and the third direction 3A will be described as the thickness direction of the first substrate 110 .

[0083] The first electrode 210 may be disposed on one surface of the first substrate 110. Specifically, the first electrode 210 may be disposed on an 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.

[0084] 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 a metal oxide such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, titanium oxide, etc.

[0085] The thickness of the first electrode 210 may be 10 nm to 300 nm.

[0086] Alternatively, the first electrode 210 may include various metals to achieve low resistance. For example, the first electrode 210 may include at least one of the following metals: chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), gold (Au), titanium (Ti), and alloys thereof.

[0087] The first electrode 210 may be provided on the entire surface of one surface of the first substrate 110. Specifically, the first electrode 210 may be provided 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 composed of a plurality of pattern electrodes having a uniform pattern such as a grid or stripe shape.

[0088] For example, the first electrode 210 may include a plurality of conductive patterns. Specifically, the first electrode 210 may include a plurality of intersecting grid lines and a plurality of grid openings formed by the grid lines.

[0089] Therefore, even if the first electrode 210 includes metal, the first electrode 210 is not visually recognized from the outside, so visibility can be improved. In addition, light transmittance is increased by the opening, so the brightness of the light path control member of this embodiment can be improved.

[0090] The second substrate 120 may be disposed on the first substrate 110. Specifically, the second substrate 120 may be disposed on the first electrode 210 on the first substrate 110.

[0091] 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 a material that is the same as or similar to the first substrate 110 described above.

[0092] For example, the second substrate 120 may include glass, plastic or a flexible polymer film. For example, the flexible polymer film may be made of any of the following materials: polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyether sulfone (PES), cyclic olefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film and polystyrene (PS). This is just an example, but the embodiment is not limited thereto.

[0093] In addition, the second substrate 120 may be a flexible substrate having a flexible property.

[0094] In addition, the second substrate 120 may be a curved or bent substrate. That is, the light path control member including the second substrate 120 may also be formed to have flexible, curved or bent characteristics. Therefore, the light path control member of this embodiment may be changed to various designs.

[0095] 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.

[0096] Specifically, the second substrate 120 may include a first direction 1A corresponding to the length or width direction of the second substrate 120, a second direction 2A extending in a direction different from the first direction 1A and corresponding to the length or width direction of the second substrate 120, and a third direction 3A extending in a direction different from the first direction 1A and the second direction 2A and corresponding to the thickness direction of the second substrate 120.

[0097] For example, the first direction 1A may be defined as the length direction of the second substrate 120 , the second direction 2A may be defined as the width direction of the second substrate 120 perpendicular to the first direction 1A, and the third direction 3A may be defined as the thickness direction of the second substrate 120 .

[0098] Alternatively, the first direction 1A may be defined as a width direction of the second substrate 120 , the second direction 2A may be defined as a length direction of the second substrate 120 perpendicular to the first direction 1A, and the third direction 3A may be defined as a thickness direction of the second substrate 120 .

[0099] In the following description, for convenience of description, the first direction 1A will be described as the length direction of the second substrate 120 , the second direction 2A will be described as the width direction of the second substrate 120 , and the third direction 3A will be described as the thickness direction of the second substrate 120 .

[0100] The second electrode 220 may be disposed on one surface of the second substrate 120. Specifically, 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 one surface of the second substrate 120 where the second substrate 120 and the first substrate 110 face 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.

[0101] The second electrode 220 may include a material that is the same as or similar to that of the first substrate 110 described above.

[0102] 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 a metal oxide, such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, titanium oxide, etc.

[0103] The thickness of the second electrode 220 may be about 10 nm to about 300 nm.

[0104] Alternatively, the second electrode 220 may include various metals to achieve low resistance. For example, the second electrode 220 may include at least one of the following metals: chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), gold (Au), titanium (Ti), and alloys thereof.

[0105] The second electrode 220 may be disposed on the entire surface of one surface of the second substrate 120. However, the embodiment is not limited thereto, and the second electrode 220 may be composed of a plurality of pattern electrodes having a uniform pattern, for example, in a mesh or stripe shape.

[0106] For example, the second electrode 220 may include a plurality of conductive patterns. Specifically, the second electrode 220 may include a plurality of intersecting grid lines and a plurality of grid openings formed by the grid lines.

[0107] Therefore, even if the second electrode 220 includes metal, the second electrode 220 is not visually recognized from the outside, so that visibility can be improved. In addition, the light transmittance is increased by the opening, thereby improving the brightness of the light path control member of this embodiment.

[0108] A cutting portion may be formed on the second substrate 120. Specifically, the second substrate 120 may include a plurality of cutting portions.

[0109] Reference Figure 1 , the second substrate 120 may include a 1-1 cutting portion h1-1, a 1-2 cutting portion h1-2, a 2-1 cutting portion h2-1, and a 2-2 cutting portion h2-2.

[0110] The 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be formed in a hole shape or a groove shape.

[0111] For example, at least one of the 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be formed in a groove shape in which one end of the upper surface of the second substrate is open and the other end of the lower surface of the light conversion portion is closed. In addition, at least one of the 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be formed in a groove shape in which one end of the upper surface of the second substrate is open and the other end of the lower surface of the light conversion portion is open or closed and any one of the two side portions perpendicular to the length direction of the cutting portion is open.

[0112] Specifically, the 1-1 cutting portion h1-1, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be disposed within the second substrate 120. Therefore, the 1-1 cutting portion h1-1, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be formed in a groove shape having one end portion opened as the upper surface of the second substrate and the other end portion closed as the lower surface of the light conversion portion.

[0113] In addition, the 1-2 cutting portion h1-2 may be disposed on the upper surface and one side of the second substrate. Therefore, the 1-2 cutting portion h1-2 may be formed into a groove shape in which one end of the upper surface of the second substrate is open and the other end of the lower surface of the light conversion portion is closed and one side of the cutting portion in a length direction perpendicular to the cutting portion is open.

[0114] The 1-1 cutting portion h1 - 1 , the 1-2 cutting portion h1 - 2 , the 2-1 cutting portion h2 - 1 , and the 2-2 cutting portion h2 - 2 may extend from the second substrate 120 toward the first substrate 110 .

[0115] At least one of the 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be formed in a shape in which the long side and / or the short side narrows while extending from the second substrate 120 to the first substrate 110. The 1-1 cutting portion h1-1 and the 1-2 cutting portion h1-2 may be arranged to face each other. Specifically, the 1-1 cutting portion h1-1 and the 1-2 cutting portion h1-2 may extend along the first direction 1A of the second substrate 120, and the 1-1 cutting portion h1-1 and the 1-2 cutting portion h1-2 may be arranged to face each other. That is, the 1-1 cutting portion h1-1 and the 1-2 cutting portion h1-2 may extend in the length direction of the second substrate 120, and the 1-1 cutting portion h1-1 and the 1-2 cutting portion h1-2 may be arranged to face each other.

[0116] The 1-1 cutting portion h1-1 and the 1-2 cutting portion h1-2 may have the same shape and area. Alternatively, the 1-1 cutting portion h1-1 and the 1-2 cutting portion h1-2 may have different shapes and / or areas.

[0117] At least one of the 1-1 cutting portion h1 - 1 and the 1-2 cutting portion h1 - 2 may be disposed to be spaced apart from both ends of the second substrate 120 or to contact both ends of the second substrate 120 .

[0118] The 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may be arranged to face each other. Specifically, the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may extend along the second direction 2A of the second substrate 120, and the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may be arranged to face each other. That is, the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may extend in the width direction of the second substrate 120, and the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may be arranged to face each other.

[0119] The 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may have the same shape and area. Alternatively, the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may have different shapes and / or areas.

[0120] At least one of the 2-1 cutting portion h2 - 1 and the 2-2 cutting portion h2 - 2 may be disposed to be spaced apart from or in contact with both ends of the second substrate 120 .

[0121] Therefore, the 1-1 cutting portion h1 - 1 , the 1-2 cutting portion h1 - 2 , the 2-1 cutting portion h2 - 1 , and the 2-2 cutting portion h2 - 2 may be disposed to extend along the edge of the second substrate 120 .

[0122] At least two of the 1-1 cutting portion h1-1, 1-2 cutting portion h1-2, 2-1 cutting portion h2-1 and 2-2 cutting portion h2-2 may be connected to each other. In addition, at least two of the 1-1 cutting portion h1-1, 1-2 cutting portion h1-2, 2-1 cutting portion h2-1 and 2-2 cutting portion h2-2 may be arranged to be spaced apart from each other.

[0123] For example, refer to Figure 1 , the 1-1 cutting portion h1-1 may be connected to the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2, the 1-2 cutting portion h1-2 may be connected to the 2-1 cutting portion h2-1, the 2-1 cutting portion h2-1 may be connected to the 1-1 cutting portion h1-1 and the 1-2 cutting portion h1-2, and the 2-2 cutting portion h2-2 may be connected to the 1-1 cutting portion h1-1. Therefore, the 1-2 cutting portion h1-2 and the 2-2 cutting portion h2-2 may be arranged to be spaced apart from each other.

[0124] Therefore, an open area OA formed between the 1-2 cutting portion h1 - 2 and the 2-2 cutting portion h2 - 2 may be formed in the second substrate 120 .

[0125] The current and voltage applied from the electrode connection part 700 of the second connection area CA2 through the opening area OA may be transmitted toward the receiving part 320 of the light conversion part 300 through the second electrode 220 .

[0126] Meanwhile, at least one of the 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be formed in the second substrate 120. That is, all of the 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be formed in the second substrate 120, or a portion of the 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be omitted, and only at least one of the cutting portions may be formed. The number of the cutting portions may be different according to the manufacturing process of the optical path control member.

[0127] The 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be formed through the second substrate 120. In addition, the 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 may be formed to penetrate at least one of the second substrate 120, the light conversion portion 300, and the second electrode 220. The penetration depths of the 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1, and the 2-2 cutting portion h2-2 will be described in detail below.

[0128] In addition, a sealing material may be provided in the 1-1 cutting part h1-1, the 1-2 cutting part h1-2, the 2-1 cutting part h2-1, and the 2-2 cutting part h2-2. Therefore, a sealing material may be provided in the 1-1 cutting part h1-1, the 1-2 cutting part h1-2, the 2-1 cutting part h2-1, and the 2-2 cutting part h2-2 to form a sealing part 500.

[0129] That is, the first sealing portion 510 may be provided on the 1-1 cutting portion h1-1 and the 1-2 cutting portion h1-2, and the second sealing portion 520 may be formed on the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2.

[0130] At the same time, in order to minimize the border area of ​​the light path control component, in at least one of the 1-1 cutting portion h1-1, the 1-2 cutting portion h1-2, the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2, at least one outer surface of the cutting portion and the entire or part of the area from the outer surface of the cutting portion to the outer surface of the substrate can be removed, so that a part of the cutting portion becomes the outermost surface of the light path control member.

[0131] For example, since an opening area is formed by removing the outer surface of the cutting portion to the outer surface of the second substrate, in the opening area, the outermost portion of the light path control member may be a part of the cutting portion, that is, the sealing portion may be the outermost surface of the light path control member. Therefore, at least one of the first sealing portion 510 and the second sealing portion 520 may be the outermost surface of the light path control member.

[0132] The sealing part 500 disposed in the cutting part will be described in detail below.

[0133] The first substrate 110 and the second substrate 120 may have the same or different sizes. That is, the first substrate 110 and the second substrate 120 may have lengths corresponding to each other and different areas.

[0134] Specifically, a first length of the first substrate 110 extending along the first direction 1A may have the same or similar size as a second length of the second substrate 120 extending along the first direction 1A.

[0135] For example, the first length and the second length may have a dimension of 300 mm to 400 mm.

[0136] In addition, a first width of the first substrate 110 extending in the second direction 2A may have the same or similar size as a second width of the second substrate 120 extending in the second direction.

[0137] For example, the first width and the second width may have a size of 150 mm to 200 mm.

[0138] In addition, a first thickness of the first substrate 110 extending in the third direction 3A may be the same as or similar to a second thickness of the second substrate 120 extending in the third direction.

[0139] For example, the first thickness and the second thickness may have a size of 1 mm or less.

[0140] In addition, the first substrate 110 and the second substrate 120 may have different areas.

[0141] Specifically, the first substrate 110 and the second substrate 120 may include protrusions. Figure 2 and Figure 3 , the first substrate 110 may include the first protrusions PA1, and the second substrate 120 may include the second protrusions PA2. Specifically, the first substrate 110 and the second substrate 120 may include the first protrusions PA1 and the second protrusions PA2, respectively, which are staggered from each other.

[0142] Alternatively, the embodiment is not limited thereto, and the first protrusion PA1 and the second protrusion PA2 may include an overlapping region overlapping each other and a non-overlapping region not overlapping each other. That is, the first protrusion PA1 and the second protrusion PA2 may include an overlapping region overlapping each other in the third direction and a non-overlapping region not overlapping each other.

[0143] 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 through the size difference of the protrusions.

[0144] Connection regions connected to an external printed circuit board or a flexible printed circuit board may be formed in the first protrusions PA1 of the first substrate 110 and the second protrusions PA2 of the second substrate 120 , respectively.

[0145] Specifically, the first connection area CA1 may be disposed on the first protrusion PA1, and the 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 offset from each other, the first connection area CA1 and the second connection area CA2 may be disposed not to overlap in the third direction 3A.

[0146] Conductive materials may be exposed on upper surfaces of the first and second connection areas CA1 and CA2, respectively, and the light path controlling member may be electrically connected to an external printed circuit board or a flexible printed circuit board through the first and second connection areas CA1 and CA2.

[0147] For example, a pad portion may be provided on the first connection area CA1 and the second connection area CA2, and a conductive adhesive comprising at least one of an anisotropic conductive film (ACF) and an anisotropic conductive paste (ACP) may be provided between the pad portion and the printed circuit board or the flexible printed circuit board to connect the optical path control component.

[0148] Alternatively, a conductive adhesive including at least one of anisotropic conductive film (ACF) and anisotropic conductive paste (ACP) may be provided between the first connection area CA1 and the second connection area CA2 and the printed circuit board or the flexible printed circuit board to directly connect the optical path control member without a pad portion.

[0149] The conductive materials constituting the first connection area CA1 and the second connection area CA2 will be described in detail below.

[0150] The light conversion part 300 may be disposed between the first substrate 110 and the second substrate 120. Specifically, the light conversion part 300 may be disposed between the first electrode 210 and the second electrode 220.

[0151] An adhesive layer or a buffer layer may be provided at least one of between the light conversion part 300 and the first substrate 110 or between the light conversion part 300 and the second substrate 120 , and the first substrate 110 , the second substrate 120 , and the light conversion part 300 may be bonded to each other through the adhesive layer and / or the buffer layer.

[0152] For example, the adhesive layer 410 may be disposed between the first electrode 210 and the light conversion part 300 , thereby bonding the first substrate 110 and the light conversion part 300 .

[0153] In addition, a buffer layer 420 may be disposed between the second electrode 220 and the light conversion part 300 to improve adhesion of the second electrode 220 and the light conversion part 300 including different materials.

[0154] The cutting portion may be formed to penetrate all or part of the buffer layer 420 and the light conversion unit 300. That is, the cutting portion may penetrate the second substrate 120, the second electrode 220 and the buffer layer 420 in the third direction and may penetrate all or part of the light conversion unit 300.

[0155] The light conversion part 300 may include a plurality of partition walls and a receiving part. A light conversion material including light conversion particles that move by voltage application and a dispersion liquid for dispersing the light conversion particles may be provided in the receiving part 320, and the light transmission characteristics of the light path control member may be changed by the light conversion particles.

[0156] In addition, a sealing portion 500 for sealing the light conversion material 330 and a dam portion 600 for easily injecting the light conversion material 330 may be provided in the receiving portion 320 .

[0157] Reference Figure 3 and Figure 4 , the receiving portion 320 may be arranged to extend in one direction. Specifically, the receiving portion 320 may extend along the second direction 2A of the first substrate 110 or the second substrate 120. That is, the receiving portion 320 may be arranged to extend in the width direction of the first substrate 110 or the second substrate 120.

[0158] Therefore, both ends of the accommodating portion 320 of the optical path control member of the first embodiment may be arranged to face both ends of the first substrate 110 or the second substrate 120, respectively. That is, one end of the accommodating portion 320 may be arranged to face one end of the first substrate 110 or the second substrate 120 on the surface in the second direction 2A. The other end of the accommodating portion 320 may be arranged to face the other end of the first substrate 110 or the second substrate 120 on the surface in the second direction 2A.

[0159] Therefore, both ends of the accommodation portion 320 may be disposed to be in contact with the first sealing portion 510 disposed to face the second direction 2A, and may be disposed to be spaced apart from the second sealing portion 520 .

[0160] Meanwhile, although not shown in the drawings, the accommodation portion 320 may be provided to extend to the second protrusion, and the accommodation portion 320 on the second protrusion may not include the light conversion material or may include less light conversion material than other accommodation portions.

[0161] Figure 5 and Figure 6 is along Figure 1 A cross-sectional view taken along line AA′.

[0162] Reference Figure 5 and Figure 6 , the light conversion part 300 may include a partition wall part 310 and a receiving part 320 .

[0163] The partition wall 310 may be defined as a partition wall that separates the receiving parts. That is, the partition wall 310 may be a barrier area that separates a plurality of receiving parts and transmits light. That is, light emitted toward the first substrate 110 or the second substrate 120 may pass through the partition wall.

[0164] The partition wall portion 310 and the receiving portion 320 may be disposed to extend in the second direction 2A of the first and second substrates 110 and 120. That is, the partition wall portion 310 and the receiving portion 320 may be disposed to extend in the width direction or the length direction of the first and second substrates 110 and 120.

[0165] The partition wall portion 310 and the receiving portion 320 may be provided to have different widths. For example, the width of the partition wall portion 310 may be greater than the width of the receiving portion 320.

[0166] In addition, the accommodation part 320 may be formed in a shape extending from the first electrode 210 toward the second electrode 220 and decreasing in width.

[0167] The partition wall portions 310 and the receiving portions 320 may be arranged alternately with each other. Specifically, the partition wall portions 310 and the receiving portions 320 may be arranged alternately with each other. That is, each partition wall portion 310 may be arranged between the receiving portions 320 adjacent to each other, and each receiving portion 320 may be arranged between the partition wall portions 310 adjacent to each other.

[0168] The partition wall portion 310 may include a transparent material. The partition wall portion 310 may include a material that can transmit light.

[0169] The partition wall portion 310 may include a resin material. For example, the partition wall portion 310 may include a photocurable resin material. For example, the partition wall portion 310 may include a UV resin or a transparent photoresist resin. Alternatively, the partition wall portion 310 may include a polyurethane resin or an acrylic resin.

[0170] The receiving part 320 may be formed to partially penetrate the light conversion part 300. Therefore, the receiving part 320 may be disposed in contact with the adhesive layer 410 and may be spaced apart from the buffer layer 420. Therefore, a base 350 may be formed between the receiving part 320 and the buffer layer 420.

[0171] A light conversion material 330 including light conversion particles 330 a and a dispersion liquid 330 b in which the light conversion particles 330 a are dispersed may be disposed in the accommodation part 320 .

[0172] The dispersion 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 that can transmit light. For example, the dispersion 330b may include at least one of a halogenated hydrocarbon-based oil, a paraffin-based oil, and isopropyl alcohol.

[0173] The light conversion particles 330a may be disposed to be dispersed in the dispersion liquid 330b. Specifically, a plurality of light conversion particles 330a may be disposed to be separated from each other in the dispersion liquid 330b.

[0174] The light conversion particles 330a may include a material capable of absorbing light, that is, the light conversion particles 330a may be light absorbing particles. The light conversion particles 330a may have a color, for example, the light conversion particles 330a may be a black color. For example, the light conversion particles 330a may include carbon black.

[0175] The photoconversion particles 330a may have polarity by charging their surfaces, for example, the surfaces of the photoconversion particles 330a may be negatively (-) charged. Therefore, the photoconversion particles 330a may move toward the first electrode 210 or the second electrode 220 according to the application of voltage.

[0176] The light conversion particles 330a can change the light transmittance of the receiving portion 320. Specifically, the receiving portion 320 can be converted into a light shielding portion and a light transmitting portion by changing the light transmittance due to the movement of the light conversion particles 330a, that is, the receiving portion 320 can change the light transmittance passing through the receiving portion 320 by dispersing and aggregating the light conversion particles 330a disposed in the dispersion 330b.

[0177] For example, the light path controlling member of the embodiment may be switched from the first mode to the second mode or from the second mode to the first mode by applying a voltage to the first electrode 210 and the second electrode 220 .

[0178] Specifically, in the light path control member of the first embodiment, the accommodating portion 320 becomes a light shielding portion in the first mode, and light at a specific angle can be blocked by the accommodating portion 320. That is, the user's viewing angle from the outside becomes narrower, so the light path control member can be driven in the privacy mode.

[0179] Furthermore, in the light path control member of the first embodiment, the housing portion 320 becomes a light-transmitting portion in the second mode, and in the light path control member of the first embodiment, light can pass through the partition wall portion 310 and the housing portion 320. That is, the viewing angle of the user from the outside can be expanded, and thus the light path control member can be driven in the open mode.

[0180] The switching from the first mode to the second mode, that is, the conversion of the receiving portion 320 from the light shielding portion to the light transmitting portion can be achieved by the movement of the light conversion particles 330a of the receiving portion 320. That is, the light conversion particles 330a can have charges on their surfaces, and can move toward the first electrode or the second electrode according to the characteristics of the charges and the application of voltage. That is, the light conversion particles 330a can be electrophoretic particles.

[0181] For example, when a voltage is applied to the light path control member from the outside, the light conversion particles 330a of the container 320 are uniformly dispersed in the dispersion 330b, and the container 320 can block light by the light conversion particles. Therefore, in the first mode, the container 320 can be driven as a light shielding portion.

[0182] In addition, when a voltage is applied to the light path control member from the outside, the light conversion particles 330a can move. For example, the light conversion particles 330a can move to one end or the other end of the receiving portion 320 by the voltage transmitted by the first electrode 210 and the second electrode 220. That is, the light conversion particles 330a can move from the receiving portion 320 to the first electrode 210 or the second electrode 220.

[0183] For example, when 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 negatively charged photoconversion particles 330a can move toward the positive electrode of the first electrode 210 and the second electrode 220 using the dispersion 330b as a medium.

[0184] For example, Figure 5As shown, in the initial mode or when a voltage is not applied to the first electrode 210 and / or the second electrode 220 , the light conversion particles 330 a may be uniformly dispersed in the dispersion 330 b , and the receiving portion 320 may be driven as a light shielding portion.

[0185] In addition, when a voltage is applied to the first electrode 210 and / or the second electrode 220, as shown in FIG. Figure 8 As shown, the light conversion particles 330a can move in the dispersion 330b toward the second electrode 220. That is, the light conversion particles 330a move in one direction, and the receiving portion 320 can be driven to be a light-transmitting portion.

[0186] Therefore, the light path control member of this embodiment can be driven in two modes according to the user's surrounding environment. That is, when the user only needs to transmit light at a specific viewing angle, the receiving portion is driven as a light shielding portion, or in an environment where the user requires high brightness, the receiving portion can be driven as a light transmitting portion by applying a voltage.

[0187] Therefore, since the light path control member of this embodiment can realize two modes according to the requirements of the user, the light path control member can be applied regardless of the environment in which the user is located.

[0188] The second sealing part 520 may be disposed at the outermost side of the light path control member. Specifically, the second sealing parts 520 extending in the second direction 2A and facing each other may be disposed at the outermost side of the light path control member in the first direction 1A.

[0189] The second sealing part 520 may be disposed in the cutting part described above. Specifically, the second sealing part 520 may be disposed in the 2-1 cutting part h2-1 and the 2-2 cutting part h2-2.

[0190] That is, the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 can be formed to sequentially penetrate the second substrate 120, the second electrode 220, the buffer layer 420 and the light conversion portion 300 including the base 350 and the partition wall portion 310, and the second sealing portion 520 can be formed by setting a sealing material in the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2.

[0191] That is, one surface of the adhesive layer 410 may be exposed through the 2-1 cutting portion h2 - 1 and the 2-2 cutting portion h2 - 1 , and the second sealing portion 520 may be in contact with the adhesive layer 410 .

[0192] The second sealing portion 520 may be disposed in contact with the side surface of the second substrate 120. In addition, the second sealing portion 520 may be disposed in contact with the side surface of the second electrode 220. In addition, the second sealing portion 520 may be disposed in contact with the side surface of the buffer layer 420. In addition, the second sealing portion 520 may be disposed in contact with the side surface of the base portion 350. In addition, the second sealing portion 520 may be disposed in contact with the side surface of the partition wall portion 310.

[0193] The second sealing portion 520 may be disposed on one side (ie, the side in the second direction 2A) of the light path control member to prevent impurities penetrating from the outside from penetrating into the light conversion portion 300 .

[0194] The second sealing portion 520 may be set to completely fill the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2, or may be set to have a height lower than the depth of the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2. Figure 5 and Figure 6 As shown, the upper surface of the second sealing portion 520 may be configured to have a height lower than the upper surface of the second substrate 120. That is, a step may be formed between the upper surface of the second sealing portion 520 and the upper surface of the second substrate 120. In addition, the upper surface of the second sealing portion 520 may be formed in a concave shape.

[0195] at the same time, Figure 5 and Figure 6 4 shows that the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 are formed to a depth that exposes one surface of the adhesive layer 410, but the embodiment is not limited thereto.

[0196] That is, the depths of the 2-1 cut portion h2-1 and the 2-2 cut portion h2-2 may be different based on a process method, a process time, etc. for forming the 2-1 cut portion h2-1 and the 2-2 cut portion h2-2.

[0197] For example, at least one of the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 can be formed to a depth that partially penetrates the light conversion portion 300, so that one surface of the base 350, the partition wall portion 310 or the accommodating portion 320 can be exposed through the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2.

[0198] Therefore, the second sealing portion 520 may be disposed to be spaced apart from the adhesive layer 410 .

[0199] Alternatively, at least one of the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may be formed to a depth partially penetrating the adhesive layer 410, and thus one surface of the adhesive layer 410 may be exposed through the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2.

[0200] Alternatively, at least one of the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may be formed to a depth partially penetrating the first electrode 210, and thus one surface of the first electrode 210 may be exposed through the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2.

[0201] Alternatively, at least one of the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may be formed until partially penetrating the first substrate 110, and thus one surface of the first substrate 110 may be exposed through the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2.

[0202] Figures 7 to 9 is along Figure 1 The cross-sectional view taken along line BB′ in FIG. That is, Figures 7 to 9 1 is a cross-sectional view taken at both ends of one of the first sealing portions 510 .

[0203] Specifically, Figure 7 is a cross-sectional view of the first sealing portion 510 in a region closest to one end of the light path control member in the second direction, Figure 8 and Fig. 9 is the distance in the second direction from one end of the optical path control member Figure 7 Cross-sectional view of the first seal 510 in the distal region.

[0204] Reference Figures 7 to 9 , the first sealing portion 510 may be disposed in the 1-1 cutting portion h1-1. The first sealing portion 510 may be disposed in contact with the side of the second substrate 120. In addition, the first sealing portion 510 may be disposed in contact with the side of the second electrode 220. In addition, the first sealing portion 510 may be disposed in contact with the side of the buffer layer 420. In addition, the first sealing portion 510 may be disposed in contact with the side of the bottom 350. In addition, the first sealing portion 510 may be disposed in contact with the side of the partition wall portion 310.

[0205] The 1-1 cutting portion h1-1 may be formed by removing one outer surface of the second substrate 120 in the first direction 1A and two outer surfaces of the second substrate 120 in the second direction 2A. Therefore, in one outer surface of the second substrate 120 in the first direction 1A, a portion of the 1-1 cutting portion h1-1 may be the outermost surface of the second substrate 120. In the two outer surfaces of the second substrate 120 in the second direction 2A, a portion of the 1-1 cutting portion h1-1 may be the outermost surface of the second substrate 120.

[0206] The first sealing portion 510 may be formed by disposing a sealing material in the 1-1 cutting portion h1-1.

[0207] The sealing materials of the first sealing portion 510 and the second sealing portion 520 may include the same material. Alternatively, the sealing materials of the first sealing portion 510 and the second sealing portion 520 may include different materials.

[0208] For example, the sealing material of at least one of the first sealing portion 510 and the second sealing portion 520 may include a photocurable material. In addition, the sealing material of at least one of the first sealing portion 510 and the second sealing portion 520 may include a material having low reactivity with the photoconversion material. For example, the sealing material of at least one of the first sealing portion 510 and the second sealing portion 520 may include polyurethane acrylate.

[0209] The 1-1 cut portion h1-1 may be formed to have different depths in various regions. Specifically, the depth of the 1-1 cut portion h1-1 may decrease as the 1-1 cut portion h1-1 is away from one end portion of the light path control member in the second direction.

[0210] Specifically, refer to Figure 1 , the 1-1 cutting portion h1-1 may include a first region 1a and a second region 2a. Specifically, the first region 1a may be defined as a region from one end of the light path control member 1 in the second direction (i.e., one end of the 1-1 cutting portion h1-1) to a boundary region between the first region 1a and the second region 2a, and the second region 2a may be defined as a region from the boundary region between the first region 1a and the second region 2a to the other end of the 1-1 cutting portion h1-1.

[0211] That is, the first region 1 a may be disposed outside the second substrate 120 , and the second region 2 a may be disposed inside the second substrate 120 .

[0212] The depths of the 1-1 cutting portion h1-1 in the first region 1a and the second region 2a may be different. That is, the 1-1 cutting portion h1-1 may include regions having different depths.

[0213] Figure 7 is a cross-sectional view of the first region 1 a.

[0214] Reference Figure 7 , the first region 1a of the 1-1 cutting portion h1-1 may be formed to sequentially penetrate the second substrate 120, the second electrode 220, the buffer layer 420, and the light conversion portion 300 including the base portion 350 and the partition wall portion 310. Therefore, in the first region 1a, the 1-1 cutting portion h1-1 may be disposed to expose the adhesive layer 410.

[0215] Therefore, the first sealing portion 510 provided in the first region 1a may be provided in contact with the adhesive layer 410. Specifically, the first sealing portion 510 may be provided in contact with the upper surface of the adhesive layer 410, the side surface of the partition wall portion 310, and the side surface of the base portion 350.

[0216] Figure 8 and Fig. 9 is a cross-sectional view of the second region 2a.

[0217] Reference Figure 8 , the second region 2a of the 1-1 cutting portion h1-1 may be formed to penetrate the second substrate 120. In addition, the second region 2a may be formed to penetrate the second electrode 220 and the buffer layer 420.

[0218] Therefore, in the second region 2 a , the 1-1 cutting portion h1 - 1 may be provided to expose the upper surface of the base 350 .

[0219] Therefore, the first sealing portion 510 disposed in the second region 2a may be disposed to contact the upper surface of the base 350. Specifically, the first sealing portion 510 may be disposed to contact the upper surface of the base 350, the side of the buffer layer 410, the side of the second electrode 220, and the side of the second substrate 120.

[0220] Thus, the 1-1 cutting portion h1-1 including the first region 1a and the second region 2a may be formed to expose the upper surface of the adhesive layer 410 , the side of the partition wall part 310 , and the upper surface of the base part 350 .

[0221] Therefore, the first sealing portion 510 disposed in the 1-1 cut portion h1-1 may be disposed to be in contact with the upper surface of the adhesive layer 410, the outer surface of the partition wall portion 310, and the upper surface of the base portion 350.

[0222] That is, since the 1-1 cutting portion h1-1 includes the first region 1a and the second region 2a having different depths, the contact area of ​​the first sealing portion 510 can be increased compared to the case where they are formed at the same depth.

[0223] Therefore, as the contact area of ​​the first sealing portion 510 disposed within the 1-1 cutting portion h1-1 increases, the adhesiveness of the first sealing portion 510 may be improved.

[0224] Reference Fig. 9 , the second region 2 a of the 1-1 cutting portion h1 - 1 may be formed to penetrate the second substrate 120 , the second electrode 220 , the buffer layer 420 , and the base 350 .

[0225] Therefore, in the second region 2a, the 1-1 cutting portion h1-1 may be provided to expose the upper surface of the partition wall portion 310. That is, since one end of the partition wall portion 310 is provided to protrude from one end of the second substrate 120, in the second region 2a, the upper surface and inner surface of the partition wall portion 310 and the upper surface of the receiving portion 320 may be exposed.

[0226] That is, the partition wall portion 310 may be provided to protrude further in the second direction than an end of the second substrate in the second direction, and the partition wall portion 310 may be exposed in the second region 2 a .

[0227] Therefore, the first sealing portion 510 disposed in the 1-1 cutting portion h1-1 may contact the upper surface of the adhesive layer 410, the upper surface, the outer surface, and the inner surface of the partition wall portion 310, and the lower surface of the receiving portion. Specifically, the first sealing portion 510 disposed in the 1-1 cutting portion h1-1 may contact the upper surface, the outer surface, and the inner surface of the partition wall portion 310, the lower surface of the receiving portion, the side surface of the buffer layer 420, the side surface of the second electrode 220, and the side surface of the second substrate 120.

[0228] That is, since the 1-1 cutting portion h1-1 includes the first region 1a and the second region 2a having different depths, the contact area of ​​the first sealing portion 510 may be increased compared to a case where it is formed at the same depth.

[0229] Therefore, due to the increase in the contact area of ​​the first sealing portion 510 disposed in the 1-1 cutting portion h1-1, the adhesive property of the first sealing portion 510 is improved.

[0230] In addition, when the light conversion material is injected into the accommodation portion through the 1-1 cutting portion h1-1, the light conversion material may be easily injected through the second region 2a.

[0231] That is, the photoconversion material may be injected into the accommodation portion 320 through the 1-1 cut portion h1-1 and the 1-2 cut portion h1-2. For example, the 1-1 cut portion h1-1 may be defined as an inlet through which the photoconversion material is injected, and the 1-2 cut portion h1-2 may be defined as an outlet through which the injected photoconversion material is sucked and discharged.

[0232] In this case, when the photoconversion material is injected into the accommodating portion through the 1-1 cutting portion h1-1, the photoconversion material can move into the accommodating portion not only through the space between the outer surfaces of the partition wall portions, but also through the space between the upper surfaces of the partition wall portions, so the photoconversion material can be easily injected.

[0233] In particular, even if foreign matter is introduced into the cutting portion to block the area between the outer surfaces of the partition walls when or after the 1-1 cutting portion h1-1 is formed, the light conversion material can be injected into the accommodation portion through the space between the upper surfaces of the partition walls.

[0234] Therefore, the light conversion material can be easily injected into the receiving portion, and the filling property of the light conversion material can be improved.

[0235] The first sealing portion 510 may be provided on a side surface (i.e., a side surface in the first direction 1A) of the light path control member to seal the receiving portion 320 of the light conversion portion 300. That is, while preventing the light conversion material 330 received in the receiving portion 320 from flowing out to the outside, impurities that may penetrate from the outside may be prevented from penetrating into the light conversion portion 300.

[0236] The first sealing portion 510 may be set to completely fill the 1-1 cutting portion h1-1, or may be set to have a height lower than the depth of the 1-1 cutting portion h1-1. Therefore, the upper surface of the first sealing portion 510 may be set to have a height lower than the upper surface of the second substrate 120. That is, a step may be formed between the upper surface of the first sealing portion 510 and the upper surface of the first substrate 110. In addition, the upper surface of the first sealing portion 510 may be formed in a concave shape.

[0237] Fig.10 is along Figure 1 The cross-sectional view is taken along the line CC′ in FIG. That is, Fig.10 5 is a cross-sectional view taken along both ends of the sealing portion connected to the first sealing portion 510 and the second sealing portion 520 in the first direction.

[0238] Reference Fig.10 , the 1-2 cutting portion h1-2 and the 2-1 cutting portion h2-1 may be connected to each other.

[0239] In addition, the 1-2 cutting portion h1-2 may be spaced apart from the 2-2 cutting portion h2-2. That is, one end of the 1-2 cutting portion h1-2 may be spaced apart from the 2-2 cutting portion h2-2.

[0240] The 1-2 cutting portion h1-2 and the 2-2 cutting portion h2-2 may be spaced apart from each other so that an open area OA formed between the 1-2 cutting portion h1-2 and the 2-2 cutting portion h2-2 may be formed.

[0241] Through the second electrode 220 disposed in the opening area OA, the electrode connection portion 700 of the second connection area CA2 disposed on the second protrusion PA2 of the second substrate 120 can be connected to the second electrode 220 without being disconnected. That is, the current and voltage transmitted through the opening area OA can be applied to the luminescence conversion material 330 in the receiving portion 320 disposed between the first sealing portion 510 and the second sealing portion. Since the 1-2 cutting portion h1-2 is connected to the 2-1 cutting portion h2-1, the first sealing portion 510 disposed on the 1-2 cutting portion h1-2 and the second sealing portion 520 disposed on the 2-1 cutting portion h2-1 can be disposed to be connected to each other. In addition, since the 1-2 cutting portion h1-2 and the 2-2 cutting portion h2-2 are spaced apart from each other, the first sealing portion 510 disposed on the 1-2 cutting portion h1-2 can be disposed to be spaced apart from the second sealing portion 520 disposed on the 2-2 cutting portion h2-2.

[0242] Meanwhile, the figure shows that the 2-1 cutting portion h2-1 is set to be spaced apart from the end (i.e., the outer surface) of the second substrate 120 in the first direction 1A, but the embodiment is not limited thereto, and the 2-1 cutting portion h2-1 may be formed by removing one outer surface of the second substrate 120 in the first direction 1A, as in the 1-1 cutting portion h1-1 described above. Therefore, in one outer surface of the second substrate 120 in the first direction 1A, a portion of the 2-1 cutting portion h2-1 may be the outermost surface of the second substrate 120.

[0243] also, Fig.10 FIG. 4 shows that the depth of the first 1-1 cutting portion h1-1 is formed to expose only the adhesive layer 410, but the embodiment is not limited thereto. Figure 8 and Fig. 9 As shown, the upper surface of the base portion or the inner surface and the upper surface of the partition wall portion may be simultaneously formed to be exposed.

[0244] Meanwhile, the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may be provided to have different lengths. Specifically, the length of the 2-2 cutting portion h2-2 in the second direction 2A may be greater than the length of the 2-1 cutting portion h2-1 in the second direction 2A.

[0245] The 2-2 cutting portion h2-2 may be provided to extend to the second protrusion PA2 of the second substrate 120, and thus the 2-2 cutting portion h2-2 may be provided to have a length greater than that of the 2-1 cutting portion h2-1.

[0246] Therefore, the lengths of the second sealing portion 520 disposed in the 2-1 cutting portion h2-1 and the 2-2 cutting portion h2-2 may also be different. That is, the length of the second sealing portion 520 disposed in the 2-2 cutting portion h2-2 may be greater than the length of the second sealing portion 520 disposed in the 2-1 cutting portion h2-1.

[0247] The first sealing portion and the second sealing portion may be disposed in the 1-1 cutting portion, the 1-2 cutting portion, the 2-1 cutting portion, and the 2-2 cutting portion, respectively.

[0248] The first sealing portion and the second sealing portion may be provided to seal an inlet and an outlet of the receiving portion receiving the light conversion material, and may be provided to extend along a side region (ie, a side region in the first direction) of the light conversion portion.

[0249] Therefore, the first sealing portion can prevent the light conversion material in the accommodation portion from flowing out to the outside of the light conversion portion, and the first sealing portion and the second sealing portion can prevent impurities from penetrating into the light conversion portion from the outside, thereby improving the reliability of the light path control member.

[0250] In addition, since the first sealing portion and the second sealing portion are arranged in the cutting portion formed on the second substrate, the size of the light path control component can be reduced compared to the case where the first sealing portion and the second sealing portion are formed outside the light conversion portion, and the sealing characteristics of the light path control component can be improved by preventing the sealing portion material from being degraded by the external environment.

[0251] Fig.11 is along Figure 1 The cross-sectional view is taken along the line DD′ in FIG. That is, Fig.11 is a cross-sectional view taken along the protruding area of ​​the first substrate and the second substrate.

[0252] Reference Fig.11 , the first protrusions PA1 of the first substrate 110 and the second protrusions PA2 of the second substrate 120 may be disposed to be spaced apart from each other. That is, the first protrusions PA1 of the first substrate 110 and the second protrusions PA2 of the second substrate 120 may be spaced apart from each other in the first direction 1A.

[0253] Therefore, the first connection region CA1 disposed on the first protrusion PA1 and the second connection region CA2 disposed on the second protrusion PA2 are physically spaced apart from each other, so that the first connection region CA1 and the second connection region CA2 may be prevented from being electrically connected to each other through the adhesive layer.

[0254] The first connection area CA1 may be disposed on the first protrusion PA1. The first electrode 210 may be exposed to the first connection area CA1. That is, the first electrode 210 on the first substrate 110 may be exposed by partially removing the adhesive layer 410 on the first protrusion PA1, so that the upper surface of the first electrode 210 may be exposed to the first connection area CA1. That is, the first electrode 210 exposed to the first connection area CA1 may be a first connection electrode connected to an external printed circuit board or a flexible printed circuit board.

[0255] In addition, the second connection area CA2 may be disposed on the second protrusion PA2. A third cutting portion h3 may be formed in the second connection area CA2. An electrode connecting portion 700 including a conductive material may be disposed in the third cutting portion h3.

[0256] The electrode connection part 700 may include a material different from at least one of the first electrode 210 and the second electrode 220. In addition, the electrode connection part 700 may have a light transmittance lower than that of at least one of the first electrode 210 and the second electrode 220.

[0257] For example, the electrode connection part 700 may include metal. Specifically, the electrode connection part 700 may include a metal paste in which metal particles are dispersed in a binder.

[0258] The electrode connection part 700 may be disposed in contact with the side surface of the second substrate 120. In addition, the electrode connection part 700 may be disposed in contact with the side surface of the second electrode 220. In addition, the electrode connection part 700 may be disposed in contact with the side surface of the buffer layer 420. In addition, the electrode connection part 700 may be disposed in contact with the side surface of the base part 350. In addition, the electrode connection part 700 may be disposed in contact with the side surface of the partition wall part 310.

[0259] That is, the electrode connection part 700 may be disposed to contact at least one side surface of the second substrate 120 , the second electrode 220 , the buffer layer 420 , the base part 350 , and the partition wall part 310 .

[0260] The upper surface of the electrode connection part 700 may be arranged on the same plane as the upper surface of the second substrate 120 or lower than the upper surface of the second substrate 120. For example, the upper surface of the electrode connection part 700 may be arranged on the same plane as the upper surface of the second substrate 120. Alternatively, Figure 8 As shown, the upper surface of the electrode connection part 700 may be disposed to be lower than the upper surface of the second substrate 120 .

[0261] Therefore, the upper surface of the electrode connection part 700 may be formed on the same plane as the upper surface of the second substrate 120 without a step, or may be provided with a step so that the upper surface of the electrode connection part 700 is lower than the upper surface of the second substrate 120 .

[0262] Therefore, it is possible to prevent the total thickness of the light path control member from increasing due to the height of the electrode connection part 700 , thereby reducing the total thickness of the light path control member.

[0263] The electrode connection part 700 may be electrically connected to the second electrode 220 and may be exposed to the outside of the second substrate 120. That is, the electrode connection part 700 may be exposed to the second protrusion PA2 of the second substrate 120. That is, the upper surface of the electrode connection part 700 may be exposed to the second connection area CA2.

[0264] Therefore, the electrode connection part 700 exposed to the second connection area CA2 may be a second connection electrode connected to an external printed circuit board or a flexible printed circuit board.

[0265] Therefore, the first electrode 210 and the second electrode 220 may be connected to the same printed circuit board or flexible printed circuit board through the first connection electrode of the first connection region and the second connection electrode of the second connection region, respectively, to be electrically connected to each other.

[0266] Alternatively, the first electrode 210 and the second electrode 220 may be connected to different printed circuit boards or flexible printed circuit boards through the first connection electrode of the first connection region and the second connection electrode of the second connection region, respectively, to be electrically connected to each other. That is, the first connection electrode may be connected to the first circuit board, and the second connection electrode may be connected to the second circuit board different from the first circuit board.

[0267] In the light path control member of the first embodiment, the first connection electrode of the first connection region and the second connection electrode of the second connection region may be provided on the first protrusion and the second protrusion formed on the first substrate and the second substrate.

[0268] The surfaces of the first substrate and the second substrate may not completely protrude, and the first protrusion and the second protrusion may protrude only in regions where the first connection region and the second connection electrode are formed.

[0269] Therefore, when the light path control member is combined with the display panel and applied to a display device, other components of the display device can be arranged in the area not corresponding to the first protrusion and the second protrusion, thereby reducing the frame area of ​​the display device.

[0270] That is, the light path control member of the first embodiment reduces the size of the frame area where the connection electrodes are provided, thereby reducing the frame area of ​​the display device to which the light path control member is applied.

[0271] Fig.12 is along Figure 1 The cross-sectional view is taken along the line EE′ in FIG. That is, Fig.12 It is a cross-sectional view taken at both ends of the 2-2 cut portion in the second direction.

[0272] Reference Fig.12 , the 2-2 cutting portion h2-2 may be provided to extend from the second protrusion PA2 of the second substrate 120 along the second direction 2A.

[0273] Reference Fig.12 , the 1-1 cutting portion h1-1 and the 2-2 cutting portion h2-2 may be connected to each other.

[0274] Since the 1-1 cutting portion h1-1 is connected to the 2-2 cutting portion h2-2, the first sealing portion 510 disposed in the 1-1 cutting portion h1-1 and the second sealing portion 520 disposed in the 2-2 cutting portion h2-2 may be disposed to be connected to each other.

[0275] Meanwhile, in the drawings, it is shown that the 2-2 cutting portion h2-2 is set to be spaced apart from the end (i.e., the outer surface) of the second substrate 120 in the first direction 1A, but the embodiment is not limited thereto, and the 2-2 cutting portion h2-2 may be formed by removing one outer surface of the second substrate 120 in the first direction 1A, as in the 1-1 cutting portion h1-1 described above. Therefore, in the one outer surface of the second substrate 120 in the first direction 1A, a portion of the 2-2 second cutting portion h2-2 may be the outermost surface of the second substrate 120.

[0276] Fig.13 is along Figure 1 The cross-sectional view taken along line FF′ in FIG. Fig.14 is along Figure 1 The cross-sectional view taken along the line GG′ in FIG. Fig.13 and Fig.14 2 is a cross-sectional view taken in the second direction of the second connection area CA2 disposed on the second protrusion PA2.

[0277] Reference Fig.13 and Fig.14 , the second connection area CA2 may include an area overlapping with the first sealing portion 510 and an area not overlapping with the first sealing portion 510 .

[0278] That is, since the 1-2 cutting portion h1-2 and the 2-2 cutting portion h2-2 are disposed to be spaced apart from each other, the second connection area CA2 may be disposed in an area overlapping the opening area OA in the second direction and in an area overlapping the first sealing portion 510 disposed within the 1-2 cutting portion h1-2.

[0279] In addition, refer to Fig.13 and Fig.14 , the first sealing part 510 disposed in the 1-1 cutting part h1-1 may be disposed to contact the side and upper surfaces of the adhesive layer 410 and the light conversion part.

[0280] In this case, the side surface and the upper surface of the light conversion unit may be the side surface of the partition wall unit and the upper surface of the base unit. Alternatively, the side surface and the upper surface of the light conversion unit may be the side surface of the partition wall unit and the upper surface of the partition wall unit.

[0281] The base of the light conversion unit or the partition wall portion of the light conversion unit can be set to protrude from the second substrate 120, the second electrode and the buffer layer 420, and the first sealing unit 510 can be set to contact the side surface of the partition wall portion and the upper surface of the base through the protrusion, or can be set to contact the side surface of the partition wall portion and the upper surface of the partition wall portion.

[0282] In addition, refer to Fig.14 The dam portion 600 may be provided between the second connection areas CA2 (ie, between the electrode connection part 700 and the first sealing part 510). That is, the dam portion 600 may be provided on the second protrusion PA2 between the electrode connection part 700 and the first sealing part 510.

[0283] The dam portion 600 may be formed by filling a dam portion forming material in a cut portion penetrating the second substrate 120 , the second electrode 220 , the buffer layer 410 , and the light conversion portion 300 .

[0284] The dam 600 controls the injection length of the photoconversion material 330 when it is injected into the receiving portion 320 , and prevents the photoconversion material 330 from overflowing outside the dam, that is, overflowing toward the electrode connection portion 700 .

[0285] A portion of the dam portion 600 may be removed during a process of manufacturing the light path control member, a portion of the dam portion 600 may remain, and a portion of the dam portion may remain in an area adjacent to the second connection area CA2.

[0286] At the same time, refer to Fig.14 , it is shown that the light conversion part 300 remains between the electrode connection part 700 and the dam part 600 , but the embodiment is not limited thereto.

[0287] That is, when the light conversion unit 300 between the electrode connection unit 700 and the dam unit 600 is the partition wall unit 310, as shown in FIG. Fig.12 As shown, the light conversion part 300 , the buffer layer 420 , the second electrode 220 , and the second substrate 120 may remain between the electrode connection part 700 and the dam part 600 .

[0288] However, when the light conversion part 300 between the electrode connection part 700 and the dam part 600 is the receiving part 320 region, the material of the dam part 600 may move into the receiving part 320 , so that the dam part 600 and the electrode connection part 700 may contact each other.

[0289] In addition, refer to Fig.14 , it is shown that the light conversion part 300 remains between the dam part 600 and the first sealing part 510 , but the embodiment is not limited thereto.

[0290] That is, when the light conversion unit 300 between the dam portion 600 and the first sealing portion 510 is the receiving portion 320 region, the light conversion unit 300, the buffer layer 420, the second electrode 220 and the second substrate 120 may be held between the dam portion 600 and the first sealing portion 510, as shown in FIG. Fig.12 shown.

[0291] However, when the light conversion part 300 between the dam part 600 and the first sealing part 510 is the receiving part 320 region, materials of the first sealing part 510 and the dam part 600 may move into the receiving part 320 , thereby making the first sealing part 510 and the dam part 600 contact each other.

[0292] Fig.15 and Fig.16 is along Figure 1 The cross-sectional view is taken along the line HH′ in FIG. That is, Fig.15 and Fig.16 is a cross-sectional view of one accommodating portion of the light path control member taken in the second direction.

[0293] Reference Fig.15 , the light conversion material 330 may be disposed in the receiving portion 320. Specifically, the light conversion material 330 and the first sealing portion 510 may be disposed in the receiving portion 320.

[0294] The first sealing portion 510 may be disposed at one end portion and the other end portion of the receiving portion 320 in the second direction 2A to seal the light conversion material 330 within the receiving portion 320 .

[0295] The light conversion material 330 within the accommodation portion 320 may be sealed by the first sealing portion 510 , thereby preventing the light conversion material 330 from flowing out to the outside of the light path control member.

[0296] The first sealing portion 510 disposed in the 1-1 cutting portion h1 - 1 may be disposed to be in contact with the optical conversion material 330 .

[0297] Reference Fig.15 When the 1-1 cutting portion h1-1 is formed to penetrate the buffer layer 420 , the first sealing portion 510 disposed in the 1-1 cutting portion h-1 may be disposed to contact the side surface and the upper surface of the base 350 .

[0298] Or, refer to Fig.16 When the 1-1 cutting portion h1-1 is formed to penetrate to the base 350, the first sealing portion 510 disposed in the 1-1 cutting portion h-1 may be disposed to contact the side surface of the base 350 and the inner surface and the upper surface of the partition wall portion.

[0299] In addition, the first sealing portion 510 disposed in the 1-2 cutting portion h1 - 2 may be in contact with the light conversion material 330 and the first mixed region 810 .

[0300] The first mixed region 810 may be a region provided with both the material of the dam portion 600 and the material of the first sealing portion 510 removed during the process of manufacturing the light path control member.

[0301] That is, the first mixed region 810 may include the same material as or a different material from the first sealing portion 510 .

[0302] For example, when the first sealing portion 510 and the dam portion 600 are made of the same material, the first mixing region 810 may be a region from which the first sealing portion 510 extends.

[0303] Alternatively, when the first sealing portion 510 and the dam portion 600 include different materials, the first mixed region 810 can be a region where the materials of the first sealing portion 510 and the dam portion 600 are mixed, or a region where the materials of the first sealing portion 510 and the dam portion 600 are separated but arranged together in an unmixed state with an interface.

[0304] By providing the first mixing area 810 in the receiving portion 320 , the generation of bubbles in the receiving portion 320 may be minimized.

[0305] That is to say, since the amount of material injected into the dam portion 600 may be different in any receiving portion, the size of the spatial region between the first sealing portion 510 and the dam portion 600 may be different. By setting the sealing material of the first sealing portion 510 in such a spatial region in an appropriate amount, the interior of the receiving portion can be set to be filled with the first sealing portion 510, the photoconversion material 330, etc.

[0306] Therefore, it is possible to prevent the generation of bubbles caused by the space in the housing portion 320 and the light leakage phenomenon caused by the bubbles.

[0307] Fig.17 is along Figure 1 That is, Fig.17 It is a cross section of one partition wall portion of the light path control member taken in the second direction.

[0308] Reference Fig.17 , the partition wall portion 310 may be disposed in a region corresponding to the partition wall portion 310 , and the partition wall portion 310 may be completely removed from the second substrate 120 to form the first sealing portion 510 .

[0309] That is, the first sealing portion 510 may also be provided in the region where the partition wall portion is provided. Therefore, the area of ​​the first sealing portion 510 may be increased in a size where the partition wall portion is removed.

[0310] Therefore, the arrangement area of ​​the first sealing portion 510 may be increased without increasing the thickness of the first sealing portion 510 .

[0311] Therefore, the sealing property of the light conversion material by the first sealing portion 510 can be improved.

[0312] In the light path control member of the first embodiment, 1-1 cutting portions, 1-2 cutting portions, 2-1 cutting portions and 2-2 cutting portions may be formed that penetrate all or part of the second substrate, the second electrode, the buffer layer and the light conversion portion on the second substrate.

[0313] In addition, a first sealing portion and a second sealing portion may be provided in the 1-1 cutting portion, the 1-2 cutting portion, the 2-1 cutting portion, and the 2-2 cutting portion, respectively.

[0314] The first sealing portion and the second sealing portion may be provided to seal an inlet and an outlet of the receiving portion for receiving the light conversion material, and may be provided to extend along a side region (ie, a side region in the first direction) of the light conversion portion.

[0315] Therefore, the first sealing portion can prevent the light conversion material in the accommodation portion from flowing out to the outside of the light conversion portion, and the first and second sealing portions can prevent impurities from penetrating into the light conversion portion from the outside, thereby improving the reliability of the light path control member.

[0316] In addition, since the first sealing portion and the second sealing portion are arranged in the cutting portion formed on the second substrate, the size of the light path control component can be reduced compared to the case where the first sealing portion and the second sealing portion are formed outside the light conversion portion, and the sealing characteristics of the light path control component can be improved by preventing the sealing portion material from being degraded by the external environment.

[0317] In addition, in the light path control member of the first embodiment, the first connection electrode and the second connection electrode may be provided on the first protrusion and the second protrusion formed on the first substrate and the second substrate.

[0318] The surfaces of the first substrate and the second substrate may not completely protrude, but the first protrusion and the second protrusion may be formed to protrude only by the areas of the first connection region and the second connection electrode.

[0319] Therefore, when the light path control member is combined with a display panel and applied to a display device, other components of the display device can be arranged in areas not corresponding to the first protrusion and the second protrusion, thereby reducing the frame area of ​​the display device.

[0320] That is, the light path control member of the first embodiment reduces the size of the frame area where the connection electrode is provided, thereby reducing the frame area of ​​the display device to which the light path control member is applied.

[0321] In addition, in the light path control member of the first embodiment, the depths of the cut portions provided with the first sealing portions may be different in the respective regions.

[0322] Therefore, since the contact area of ​​the first sealing portion provided in the cut portion can be increased, the adhesiveness of the first sealing portion can be improved, and thus the delamination of the first sealing portion can be prevented.

[0323] In addition, when the light conversion material is injected through the cutting portion before the first sealing portion is provided, a channel for the light conversion material to move into the receiving portion can be increased, thereby facilitating the injection of the light conversion material.

[0324] Next, we will refer to Figure 18 to Figure 24 A light path controlling member of a second embodiment is described.

[0325] In the description of the light path control member of the second embodiment, the description that is the same as or similar to that of the light path control member of the above-described first embodiment will be omitted, and the same reference numerals are assigned to the same components.

[0326] Reference Figures 18 to 24 In the light path control member of the second embodiment, unlike the first embodiment described above, the accommodation portion 320 of the light conversion portion is inclined at a predetermined angle.

[0327] Reference Figures 18 to 21 , the accommodation portion 320 may extend in a direction different from the first direction 1A and the second direction 2A.

[0328] Therefore, one end and the other end of at least one of the accommodation portions 320 may contact the first sealing portion 510 , and one end and the other end of the at least one accommodation portion may contact the first sealing portion 510 and the second sealing portion 520 .

[0329] Since the receiving portion is inclined at a predetermined inclination angle, when the light path control member is combined with the display panel to form a display device, a moiré phenomenon caused by overlapping patterns of the receiving portion of the light path control member and the display panel can be prevented.

[0330] That is, one end and the other end of the accommodation portion 320 of the second embodiment may be formed on both the outer surface in the first direction and the outer surface in the second direction of the light path controlling member.

[0331] Fig. 22 is along Fig.18 and 21 The cross-sectional view taken along the JJ′ line in FIG. That is, Fig. 22 It is a cross-sectional view of a receiving portion of a light path control component taken at an inclined angle.

[0332] Reference Fig. 22 , the light conversion material 330 may be disposed in the receiving portion 320. Specifically, the light conversion material 330 and the first sealing portion 510 may be disposed in the receiving portion 320.

[0333] The first sealing portion 510 may be provided at one end portion and the other end portion of the receiving portion 320 in the second direction 2A to seal the light conversion material 330 within the receiving portion 320 .

[0334] In addition, when the 1-1 cutting portion h1 - 1 is formed to penetrate until the buffer layer 420 , the first sealing portion 510 disposed in the 1-1 cutting portion h1 - 1 may be disposed to contact the side surface and the upper surface of the base 350 .

[0335] That is, at least one of the plurality of receiving portions of the light conversion portion may be disposed to be in contact with only the first sealing portion 510 .

[0336] The light conversion material 330 within the accommodation portion 320 may be sealed by the first sealing portion 510 , thereby preventing the light conversion material 330 from flowing out to the outside of the light path control member.

[0337] The first sealing portion 510 disposed in the 1-1 cutting portion h1-1 may be disposed to contact the light conversion material 330. Also, the first sealing portion 510 disposed in the 1-2 cutting portion h1-2 may be disposed to contact the light conversion material 300 and the first mixed region 810.

[0338] The first mixed region 810 may be a region where the material of the dam portion 600 removed during a process of manufacturing the light path control member and the material of the first sealing portion 510 are mixed or separated.

[0339] That is, the first mixed region 810 may include the same material as or a different material from the first sealing portion 510 .

[0340] For example, when the materials of the first sealing portion 510 and the dam portion 600 include the same material, the first mixed region 810 may be a region from which the first sealing portion 510 extends.

[0341] Alternatively, when the materials of the first sealing portion 510 and the dam portion 600 include different materials, the first mixed region 810 can be a region where the materials of the first sealing portion 510 and the dam portion 600 are mixed, or a region where the materials of the first sealing portion 510 and the dam portion 600 are separated from each other but arranged together in a state where they are not mixed and have an interface.

[0342] By providing the first mixing area 810 within the accommodation portion 320, the generation of bubbles can be minimized.

[0343] That is to say, since the amount of material injected into the dam portion 600 may be different in any receiving portion, the size of the spatial region between the first sealing portion 510 and the dam portion 600 may be different, and by setting the sealing material of the first sealing portion 510 in an appropriate amount in such a spatial region, the interior of the receiving portion can be set to be filled with the first sealing portion 510, the photoconversion material 330, etc.

[0344] Therefore, it is possible to prevent the generation of bubbles due to the space in the receiving portion 320 and the light leakage phenomenon caused thereby.

[0345] Fig.23 is along Fig.18 and Fig.21 The cross-sectional view taken along the line JJ′ in FIG. Fig.23 It is a cross-sectional view of the outermost accommodation portion of the light path control component cut in the oblique angle direction.

[0346] Reference Fig.23 , the light conversion material 330 may be disposed in the receiving portion 320. Specifically, the light conversion material 330 and the first sealing portion 510 and the second sealing portion 520 may be disposed in the receiving portion 320.

[0347] The first sealing portion 510 and the second sealing portion 520 may seal the light conversion material 330 disposed in the receiving portion 320 .

[0348] That is, the first sealing portion 510 may seal the end in the outer surface direction in the second direction among the ends of the accommodation portion 320 , and the second sealing portion 520 may seal the end in the outer surface direction in the first direction among the ends of the accommodation portion 320 .

[0349] That is, at least one of the plurality of receiving portions of the light conversion portion may be disposed in contact with the first sealing portion 510 and the second sealing portion 520 .

[0350] The light conversion material 330 in the receiving portion 320 is sealed by the first sealing portion 510 and the second sealing portion 520 , thereby preventing the light conversion material from flowing out to the outside.

[0351] The first sealing portion 510 disposed in the 1-1 cutting portion h1-1 may be disposed in contact with the light conversion material 330. Alternatively, the first sealing portion 510 disposed on the 1-1 cutting portion h1-1 may be disposed in contact with the light conversion material 330 and the second mixed region 820.

[0352] The second mixed region 820 may be a region including both the first sealing portion 510 and the light conversion material 330 .

[0353] That is, in the first sealing portion 510 provided in the 1-1 cutting portion h1-1, a portion of the sealing material infiltrates into the receiving portion 320 in the region overlapping with the receiving portion 320, or the light conversion material 330 may infiltrate into the 1-1 cutting portion h1-1.

[0354] In the second mixed region 820 , the light conversion material 330 and the sealing material may be disposed to be phase-separated from each other or disposed to be mixed with each other.

[0355] In addition, in the first sealing part 510 provided in the 1-1 cutting part h1-1, a portion of the sealing material penetrates into the receiving part 320 in the region overlapping with the receiving part 320. The first sealing part 510 can improve the adhesion of the second sealing part through the anchoring effect, thereby preventing the second sealing part from being delaminated.

[0356] In addition, the second sealing portion 520 provided in the 2-1 cutting portion h2-1 may be provided to be in contact with the light conversion material 330. Specifically, one surface of the second sealing portion 520 facing the first sealing portion may be in contact with the light conversion material 330. In addition, the light conversion material 330 may be present in the direction of another surface opposite to the one surface in contact with the light conversion material 330. In addition, a second mixed region including both the light conversion material 330 and the sealing material may be provided in the direction of another surface opposite to the one surface.

[0357] Fig.24 is along Fig.18 and Fig.21 The cross-sectional view is taken along the line LL′ in FIG. That is, Fig.24 is a cross-sectional view taken along the extending direction of the second sealing portion of the light path control member.

[0358] Reference Fig.24 , the second sealing portion 520 may be formed to penetrate the second substrate 120, the second electrode 220, and the buffer layer 410, and may be formed by removing a portion of the receiving portion 320 and the partition wall portion 310. In addition, the second sealing portion 520 may be formed across the receiving portion 320 and the partition wall portion 310. That is, the partition wall portion 310 and the receiving portion 320 may be alternately disposed below the second sealing portion 520.

[0359] The light conversion material 330 may be disposed in the receiving portion 320 that has not been removed. Specifically, when the light conversion material 330 is filled in the receiving portion 320, one end of the light conversion material 330 in the receiving portion 320 may be sealed by the first sealing portion 510 to minimize the movement of the light conversion material. Subsequently, by forming the 2-1 cutting portion h2-1 and forming the second sealing portion 520, the remaining light conversion material in the receiving portion below the second sealing portion may also be sealed. That is, the second sealing portion 520 may contact the side and upper surface of the light conversion material 330 and may seal the light conversion material 330.

[0360] Preferably, when forming the second sealing portion, both the accommodation portion and the partition wall portion are removed so that the light conversion material can be prevented from flowing out to the outside.

[0361] Meanwhile, a third mixed region may be formed where the second sealing portion 520 and the receiving portion 320 overlap (ie, a region in contact with each other).

[0362] The third mixed region may be a region where the second sealing portion 520 and the light conversion material 330 are mixed.

[0363] That is, in the second sealing portion 520 disposed in the 2-1 cutting portion h2-1, a portion of the sealing material may penetrate into the receiving portion 320 in the region overlapping with the receiving portion 320, or the photoconversion material may penetrate into the 2-1 cutting portion h2-1 and mix with the photoconversion material 330.

[0364] Therefore, the second sealing portion 520 may improve the adhesion of the second sealing portion through an anchoring effect, thereby preventing the second sealing portion from being delaminated.

[0365] Meanwhile, the above-described light conversion material 330 can adjust the viscosity of the dispersion 330 b in which the light conversion particles are dispersed, so as to improve the mobility of the light conversion particles 330 a.

[0366] Specifically, in the optical path control member described above, the switching between the first mode and the second mode is achieved by moving the light conversion particles 330a dispersed in the dispersion 330b. In addition, when the moving speed of the light conversion particles 330a increases, the switching speed of switching to the first mode and the second mode will also increase, thereby increasing the driving speed of the optical path control member.

[0367] The moving speed of the light conversion particles 330a in the receiving portion can be determined by the electrophoretic mobility (μE) and the response time (t switching ) to calculate.

[0368] The electrophoretic mobility (μE) and the response time (t switching ) can be defined by the following equation.

[0369] [Equation 1]

[0370]

[0371] [Equation 2]

[0372]

[0373] [Equation 3]

[0374]

[0375] Here, as the response time (t switching ) increases, the driving speed of the optical path control component can be reduced, and as the response time (t switching ) is reduced, the driving speed of the optical path control component can be increased.

[0376] Referring to the above equation, it can be seen that the electrophoretic mobility (μE) is proportional to the dielectric constant (ε) and inversely proportional to the viscosity (η).

[0377] That is, as the dielectric constant of the light path control member increases, the mobility of the light conversion particles 330 a increases, and as the viscosity decreases, the mobility of the light conversion particles 330 a increases.

[0378] In addition, it can be seen that the response time (t switching ) decreases with increasing electrophoretic mobility, increasing voltage and decreasing electrode spacing.

[0379] In summary, the response time (t switching ) decreases as the viscosity of the dispersion liquid 330b decreases and the dielectric constant increases, and since the response time is reduced, the driving speed of the optical path control member can be improved.

[0380] That is, it can be seen that the driving speed of the light path control member is inversely proportional to the viscosity (μ) of the light conversion material 330 (ie, the viscosity (μ) of the dispersion liquid 330 b ).

[0381] That is, when the viscosity (μ) of the dispersion liquid 330b increases, the response time increases, so the driving speed of the light path control member decreases, and when the viscosity (μ) of the dispersion liquid 330b decreases, the response time decreases, so the driving speed of the light path control member increases.

[0382] Therefore, the light path control member of this embodiment can control the material of the dispersion liquid to increase the driving speed of the light path control member.

[0383] Specifically, the dispersion liquid 330b may include a material having a carbon number within a specific range. Specifically, the dispersion liquid 330b may include a material having a carbon number of 2 to 13.

[0384] For example, the dispersion 330b may include at least one of Isopar C, Isopar E, Isopar G, Isopar H, Isopar K, and Isopar L.

[0385] When the number of carbon atoms in the dispersion liquid 330b is less than 2, it may be difficult to keep the dispersion liquid 330b in a liquid state, and thus it is difficult to use the dispersion liquid 330b as a light conversion material of the light path control member. In addition, when the number of carbon atoms in the dispersion liquid 330b exceeds 13, the viscosity of the dispersion liquid 330b increases, and thus the driving speed of the light path control member may decrease due to an increase in response time.

[0386] Specifically, within the range of 2 to 13 carbon atoms, the dispersion 330 b may have a low viscosity ranging from 0.5 cP to 3 cP.

[0387] Therefore, since the light path control member including the dispersion liquid 330 b includes a dispersion liquid with a low viscosity, the electrophoretic mobility of the light path control member increases and the response time decreases, thereby improving the overall driving speed.

[0388] In addition, since the dispersion liquid 330 b has a low viscosity, the fluidity of the dispersion liquid increases, and when the receiving portion 320 is filled with the dispersion liquid including the dispersion liquid 330 b , the filling speed may be increased, thereby improving process efficiency.

[0389] Meanwhile, the light path controlling member of the present embodiment may include a dispersion liquid including two or more materials.

[0390] Specifically, the light path control member may include a first solvent having a carbon atom number ranging from 2 to 13 as described above and a second solvent having a dielectric constant of 5 F / m to 10 F / m.

[0391] In addition, the first solvent and the second solvent may have different viscosities. Specifically, the viscosity of the first solvent may be less than the viscosity of the second solvent. More specifically, the viscosity of the first solvent may be 0.5 cP to 5 cP. In addition, the viscosity of the second solvent may be 1 cP to 30 cP.

[0392] The viscosity difference between the first solvent and the second solvent may be 0.5 cP to 29 cP within the above range.

[0393] Specifically, the content of the second solvent relative to the total weight of the dispersion is 1wt% to 10wt%. When the content of the second solvent relative to the total weight of the dispersion is less than 1wt%, it is difficult to achieve an increase in electrophoretic mobility based on a high dielectric constant, and when the content of the second solvent relative to the total weight of the dispersion exceeds 10wt%, the viscosity of the dispersion increases, the response time increases, and the driving speed of the optical path control member can be reduced.

[0394] Hereinafter, the present invention is described in detail by measuring the electrophoretic mobility of the light path control member based on the viscosity of the dispersion according to the embodiment and the comparative example. These examples are merely illustrative examples provided to more specifically describe the present invention, and thus are not limited to these examples.

[0395] The electrophoretic mobility was measured by measuring the time required for the light transmittance of the receiving portion to change from 10% to 35% after a voltage was applied to the light path control member.

[0396] Example 1

[0397] The light path controlling member described above was manufactured.

[0398] In this case, the viscosity of the dispersion liquid of the light conversion material provided in the container is 1.4 cP.

[0399] Then, after voltage was applied to the light path controlling member, the time required for the light transmittance of the accommodating portion to change from 10% to 35% was measured.

[0400] Example 2

[0401] An optical path controlling member was manufactured in the same manner as in Example 1, except that the viscosity of the dispersion liquid was set to 2.4 cP.

[0402] Then, after voltage was applied to the light path controlling member, the time required for the light transmittance of the accommodating portion to change from 10% to 35% was measured.

[0403] Comparative Example 1

[0404] An optical path controlling member was manufactured in the same manner as in Example 1, except that the viscosity of the dispersion liquid was 3.2 cP.

[0405] Then, after voltage was applied to the light path controlling member, the time required for the light transmittance of the accommodating portion to change from 10% to 35% was measured.

[0406] [Table 1]

[0407] Example 1 Example 2 Comparative Example 1 Arrival time (seconds) 1.9 3.7 6

[0408] Refer to Table 1 and Fig.25 It can be seen that the time required for the transmittance of the accommodating portion in the optical path control component of Examples 1 and 2 to increase from 10% to 35% is shorter than the time required for the transmittance of the accommodating portion in the optical path control component of Comparative Example 1 to increase from 10% to 35%.

[0409] That is, since the viscosity of the dispersion of the light path control components of Examples 1 and 2 is lower than that of the dispersion of the light path control components of Comparative Example 1, the electrophoretic mobility increases, thereby increasing the moving speed of the light conversion particles, so it can be seen that the conversion speed of the transmittance increases.

[0410] Measurement of dispersion viscosity based on carbon number

[0411] A dispersion for producing the above-mentioned optical path control member was prepared.

[0412] Then, the viscosity of the dispersion based on the carbon number of the dispersion material was measured.

[0413] [Table 2]

[0414] Number of carbon atoms Average number of carbon atoms Viscosity Example 3 7～10 9 0.69 Example 4 7～10 9 0.82 Example 5 10～12 11 1.47 Example 6 11～12 12 1.80 Example 7 11～13 12 1.86 Example 8 11～13 12 2.11 Comparative Example 2 14～19 17 13.26

[0415] Referring to Table 2, the carbon atom numbers of the substances contained in the dispersions of Examples 3 to 8 are smaller than that of the dispersion of Comparative Example 2.

[0416] In addition, it can be seen that the viscosity of the dispersions of Examples 3 to 8 is lower than that of the dispersion of Comparative Example 2.

[0417] That is, it can be seen that the viscosity of the light path controlling member including the dispersions of Examples 3 to 8 is lower than the viscosity of the light path controlling member including the dispersion of Comparative Example 2, thereby increasing the driving speed of the light path controlling member.

[0418] Example 9

[0419] The light path controlling member described above was manufactured.

[0420] In this case, the dispersion liquid of the conversion material disposed in the accommodation portion includes a first solvent and a second solvent.

[0421] In this case, the first solvent includes a material having a viscosity of 0.5 cP to 5 cP, and the second solvent includes a material having a viscosity higher than that of the first solvent.

[0422] Specifically, the second solvent includes a material having a viscosity higher than that of the first solvent by 0.5 cP to 29 cP.

[0423] In this case, the content of the second solvent relative to the total weight of the dispersion liquid was 3 wt %.

[0424] Then, the viscosity of the dispersion was measured.

[0425] Example 10

[0426] A light path controlling member was prepared in the same manner as in Example 9, except that the content of the second solvent was 5 wt % relative to the total weight of the dispersion.

[0427] Then, the viscosity of the dispersion was measured.

[0428] Embodiment 11

[0429] A light path controlling member was prepared in the same manner as in Example 9, except that the content of the second solvent was 9 wt % relative to the total weight of the dispersion.

[0430] Then, the viscosity of the dispersion was measured.

[0431] Comparative Example 3

[0432] A light path controlling member was prepared in the same manner as in Example 9, except that the content of the second solvent was 20 wt % relative to the total weight of the dispersion.

[0433] Then, the viscosity of the dispersion was measured.

[0434] Comparative Example 4

[0435] A light path controlling member was prepared in the same manner as in Example 9, except that the content of the second solvent was 80 wt % relative to the total weight of the dispersion.

[0436] Then, the viscosity of the dispersion was measured.

[0437] Comparative Example 5

[0438] An optical path controlling member was prepared in the same manner as in Example 9, except that the content of the second solvent relative to the total weight of the dispersion liquid was 100 wt %, that is, the dispersion liquid contained only the second solvent.

[0439] Then, the viscosity of the dispersion was measured.

[0440] Reference Fig.26 It can be seen that the viscosity of the dispersion liquid of the light path control member of Examples 9 to 11 is lower than the viscosity of the dispersion liquid of the light path control member of Comparative Examples 3 to 5.

[0441] That is, it can be seen that the viscosity of the dispersion liquid of the light path control members of Examples 9 to 11 is lower than the viscosity of the dispersion liquid of Comparative Example 5 (ie, the viscosity when only the second solvent containing only a solvent having a high dielectric constant is used as the dispersion liquid).

[0442] Therefore, in the optical path control members of Examples 9 to 11, as the dielectric constant of the dispersion increases, the viscosity also decreases, thereby increasing the electrophoretic mobility within the accommodation portion of the optical path control member, thereby increasing the overall driving speed of the optical path control member.

[0443] Below, refer to Figure 27 to Figure 31 , a display device to which the optical path control member of the embodiment is applied is described.

[0444] Reference Figure 27 to Figure 28 , the light path controlling member 1000 of one embodiment may be disposed above or below the display panel 2000 .

[0445] The display panel 2000 and the light path control member 1000 may be arranged to be bonded to each other. For example, the display panel 2000 and the light path control member 1000 may be bonded together by an adhesive layer 1500. The adhesive layer 1500 may be transparent. For example, the adhesive layer 1500 may include an adhesive or an adhesive layer including an optically transparent adhesive material.

[0446] The adhesive layer 1500 may include a release film. Specifically, when the light path control member and the display panel are bonded, the light path control member and the display panel may be bonded after removing the release film.

[0447] 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 under the liquid crystal panel. That is, when the surface of the liquid crystal panel viewed by the user is defined as the upper part of the liquid crystal panel, the light path control member may be disposed under the liquid crystal panel. The display panel 2000 may be formed in a structure in which a first 'substrate 2100 including a thin film transistor (TFT) and a pixel electrode and a second 'substrate 2200 including a color filter layer are bonded to each other with a liquid crystal layer interposed therebetween.

[0448] In addition, the display panel 2000 may be a liquid crystal display panel of a color filter on transistor (COT) structure in which a thin film transistor, a color filter and a black electrolyte are formed on the first 'substrate 2100 and the second 'substrate 2200 is bonded to the first 'substrate 2100 with a liquid crystal layer interposed therebetween. 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 in contact with the thin film transistor may be formed on the first 'substrate 2100. At this point, in order to increase the aperture ratio and simplify the masking process, the black electrolyte may be omitted, and a common electrode may be formed to serve as a black electrolyte.

[0449] In addition, when the display panel 2000 is a liquid crystal display panel, the display device may further include a backlight unit 3000 that provides light from the back side of the display panel 2000 .

[0450] That is to say, Fig. 27 As shown, the light path control member may be disposed below the liquid crystal panel and above the backlight unit 3000 , and the light path control member may be disposed between the backlight unit 3000 and the display panel 2000 .

[0451] Or, if Fig.28 As shown, when the display panel 2000 is an organic light emitting diode panel, the light path control member can be formed on the organic light emitting diode panel. That is, when the surface viewed by the user in the organic light emitting diode panel is defined as the upper part of the organic light emitting diode panel, the light path control member can be disposed on the organic light emitting diode panel. The display panel 2000 may include a self-luminous element 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 element in contact with the thin film transistor may be formed. The organic light emitting element 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, which is configured as an encapsulation substrate for encapsulation, may be further included on the organic light emitting element.

[0452] In addition, although not shown in the drawings, a polarizer may be further provided between the light path control member 1000 and the display panel 2000. The polarizer may be a linear polarizer or an external light reflection prevention polarizer. For example, when the display panel 2000 is a liquid crystal display panel, the polarizer may be a linear polarizer. When the display panel 2000 is an organic light emitting diode panel, the polarizer may be an external light reflection prevention polarizer.

[0453] In addition, an additional functional layer 1300, such as an anti-reflection layer, an anti-glare layer, etc., may be provided on the light path control member 1000. Specifically, 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 drawings, the functional layer 1300 may be bonded 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 provided on the functional layer 1300.

[0454] In addition, a touch panel may be provided between the display panel and the light path control member.

[0455] The figure shows that the light path control member is arranged on the upper part of the display panel, but the embodiment is not limited to this. The light path control member can be arranged in various positions, such as a light adjustable position (i.e., the lower part of the display panel) or between the second substrate and the first substrate of the display panel, etc.

[0456] In addition, the figure shows that the light conversion part of the light path control member of this embodiment is parallel or perpendicular to the outer surface of the second substrate, but the light conversion part can also be formed to be inclined at a predetermined angle from the outer surface of the second substrate. Through such a configuration, the occurrence of moiré phenomenon between the display panel and the light path control member can be reduced.

[0457] Reference Figure 29 to Figure 31 , an optical path control component of an embodiment can be applied to various display devices.

[0458] Reference Figure 29 to Figure 31 The optical path control component of this embodiment can be applied to a display device for displaying images.

[0459] For example, when Fig.29 When the power is applied to the light path control member, the receiving portion functions as a light transmitting portion, so the display device can be driven in the open mode. Fig.30 When the power source is not applied to the light path control member, the accommodating portion functions as a light shielding portion, and thus the display device can be driven in the light shielding mode.

[0460] Therefore, the user can easily drive the privacy mode or the normal mode of the display device according to the application of power.

[0461] The light from the backlight unit or the self-luminous element may move from the first substrate to the second substrate. Alternatively, the light from the backlight unit or the self-luminous element may move from the second substrate to the first substrate.

[0462] In addition, refer to Fig.31 The light path control component of this embodiment can also be applied to a display device inside a vehicle.

[0463] For example, a display device including the optical path control member of the present embodiment can display the video confirmation information of the vehicle and the moving route of the vehicle. The display device can be arranged between the driver's seat and the passenger seat of the vehicle.

[0464] In addition, the optical path control component of this embodiment can also be applied to a dashboard that displays the speed, engine, warning signals, etc. of a vehicle.

[0465] In addition, the light path control member of the present embodiment can also be applied to the front glass (FG) or left and right window glasses of a vehicle.

[0466] The features, structures, effects, etc. described in the above various embodiments are included in at least one embodiment of the present invention, but are not limited to one embodiment. In addition, the features, structures, and effects described in each embodiment can be combined or modified into other embodiments by those skilled in the art. Therefore, it should be understood that such combination and modification are included within the scope of the present invention.

[0467] In addition, the above mainly describes the embodiment, but these embodiments are only examples, do not limit the present invention, and those skilled in the art will recognize that multiple deformations and applications not mentioned above can be made without departing from the essential features of the embodiment. For example, each component specifically pointed out in the embodiment can be changed. In addition, it should be understood that the differences related to such deformation and such application are also included in the scope of the present invention defined in the appended claims.

Claims

1. A light path control component, comprising: a first substrate; A first electrode, disposed on the first substrate; a second substrate disposed on the first substrate and including a 1-1 cutting portion and a 1-2 cutting portion each extending in a first direction and spaced apart from each other in a second direction different from the first direction, and a 2-1 cutting portion and a 2-2 cutting portion each extending in the second direction and spaced apart from each other in the first direction; A second electrode is disposed under the second substrate; A light conversion unit, disposed between the first electrode and the second electrode; as well as a sealing portion, disposed inside the 1-1 cutting portion, the 1-2 cutting portion, the 2-1 cutting portion, and the 2-2 cutting portion, The light conversion part includes a plurality of partition walls and a plurality of receiving parts which are alternately arranged. Wherein, an opening area is formed between the 1-2 cutting portion and the 2-2 cutting portion, wherein the second substrate comprises a plurality of outer surfaces, wherein one end of the 1-2 cutting portion is connected to one of the plurality of outer surfaces, and the other end of the 1-2 cutting portion is spaced apart from the plurality of outer surfaces, The opening area corresponds to the spacing area between the other end of the 1-2 cutting portion and the 2-2 cutting portion.

2. The optical path control member according to claim 1, wherein: Each container is provided with a light conversion material including a dispersion liquid and a plurality of light conversion particles dispersed in the dispersion liquid. The dispersion comprises a first solvent and a second solvent, The first solvent comprises a material having 2 to 13 carbon atoms, The dielectric constant of the second solvent is 5F / m to 10F / m, and The content of the second solvent is 1 wt % to 10 wt % relative to the total weight of the dispersion. Wherein, the viscosity of the first solvent is lower than the viscosity of the second solvent.

3. The optical path control member according to claim 2, wherein: The viscosity difference between the first solvent and the second solvent is 0.5 cP to 29 cP.

4. The optical path control member according to claim 2, wherein: The viscosity of the first solvent is 0.5 cP to 5 cP, and The viscosity of the second solvent is 1 cP to 30 cP.

5. The light path control member according to claim 2, wherein: The first solvent comprises at least one of Isopar C, Isopar E, Isopar G, Isopar H, Isopar K, and Isopar L.

6. The light path control member according to claim 1, wherein: The accommodation portion is disposed to be inclined with respect to the second direction.

7. The light path control member according to claim 1, wherein: The 1-1 cutting portion, the 1-2 cutting portion, the 2-1 cutting portion, and the 2-2 cutting portion penetrate at least one of the second substrate, the light conversion portion, and the second electrode.

8. The light path control member according to claim 1, wherein: A first sealing portion is provided on the 1-1 cutting portion and the 1-2 cutting portion, A second sealing portion is provided on the 2-1 cutting portion and the 2-2 cutting portion, and At least one of the first sealing portion and the second sealing portion is an outermost surface of the light path controlling member.

9. The light path control member according to claim 1, wherein: The first substrate includes a first protrusion, The second substrate includes a second protrusion, A first connection area is provided on the first protrusion, and A second connecting region is provided on the second protrusion.

10. The light path control member according to claim 9, wherein: The first electrode is exposed in the first connection region.

11. The light path control member according to claim 9, wherein: A third cutting portion is formed in the second connection region, and An electrode connecting portion is disposed in the third cutting portion.

12. The light path control member according to claim 11, wherein: The electrode connecting portion contacts a side surface of the second electrode.

13. A display device, comprising: a panel, comprising at least one of a display panel and a touch panel; as well as The light path control member according to claim 1, wherein the light path control member is arranged on the panel or under the panel.

14. The display device according to claim 13, wherein: 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, and Light emitted from the backlight unit moves in a direction from the first substrate toward the second substrate.

15. The display device according to claim 13, wherein: The panel comprises an organic light emitting diode panel, The light path control member is disposed on the organic light emitting diode panel, and Light emitted from the panel moves in a direction from the first substrate toward the second substrate.

Images