Optical path control member and display device including the same

Abstract

A light path control member according to an embodiment includes a first substrate, a first electrode disposed at an upper portion of the first substrate, a second substrate disposed on the first substrate, a second electrode disposed at a lower portion of the second substrate, and a light conversion unit disposed between the first electrode and the second electrode. The light conversion unit includes partition wall portions and accommodation portions alternately disposed. The accommodation portions change a light transmittance according to application of a voltage. The partition wall portions include base partition wall portions and separation partition wall portions. A plurality of holes are provided in at least one of the base partition wall portions or the separation partition wall portions. A density of a partition wall material per unit area in the separation partition wall portions is less than a density of the partition wall material per unit area in the base partition wall portions.

Description

Technical Field

[0001] The embodiments relate to an optical path control component and a display device including the optical path control component. Background Technology

[0002] The light-shielding film blocks the light emitted from the light source and is attached to the front surface of the display panel (which is a display device used in mobile phones, laptops, tablets, vehicle navigation devices, vehicle touch screens, etc.). The light-shielding film adjusts the angle of light according to the angle of incidence of light, so that when the display transmits images, it can display clear image quality at the angle required by the user.

[0003] In addition, shading film can be used on windows of vehicles, buildings, etc., to partially block external light, thereby preventing glare or preventing the interior from being seen from the outside.

[0004] In other words, a light-blocking film can be a light path control component that controls the movement path of light, blocks light in a specific direction, and transmits light in a specific direction. Therefore, by controlling the light transmission angle through the light-blocking film, the user's viewing angle can be controlled.

[0005] Meanwhile, this type of light-blocking film can be divided into light-blocking films that allow the viewing angle to be controlled regardless of the surrounding environment or the user's environment, and switchable light-blocking films that allow the user to turn the viewing angle control on / off according to the surrounding environment or the user's environment.

[0006] This switchable light-blocking film can be achieved by adding electrically moving particles to a housing containing light-converting material and changing the housing into a light-transmitting part and a light-blocking part through the dispersion and aggregation of the particles.

[0007] This switchable light-blocking film can be achieved by adding electrically moving particles to the patterned section and changing the patterned section into a light-transmitting section and a light-blocking section through the dispersion and aggregation of the particles.

[0008] The pattern section can be divided into multiple pattern sections by partition walls. That is, partition walls can be respectively provided between multiple pattern sections.

[0009] In this case, the partition walls must have certain dielectric properties to facilitate the electrical connection between the patterned portions and the electrodes. However, a problem arises: due to the dielectric properties, leakage current increases in the direction of the partition walls between the patterned portions, thus increasing the driving voltage and reducing the driving characteristics.

[0010] Therefore, there is a need for an optical path control component with a novel structure that can reduce leakage current in the direction of the partition wall as described above. Summary of the Invention

[0011] Technical issues

[0012] The embodiments aim to provide an optical path control component with improved driving characteristics, reliability, and visibility, and a display device including the optical path control component.

[0013] Technical solution

[0014] The optical path control component according to an embodiment includes: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed below the second substrate; and a light conversion section disposed between the first electrode and the second electrode. The light conversion section includes alternately arranged partition wall sections and receiving sections. The light transmittance changes according to the voltage applied to the receiving section. The partition wall sections include a base partition wall section and a separation partition wall section. At least one of the base partition wall section and the separation partition wall section has a plurality of holes. The density of the partition wall material per unit area of ​​the separation partition wall section is less than the density of the partition wall material per unit area of ​​the base partition wall section.

[0015] Beneficial effects

[0016] According to the embodiment, the partition wall portion of the optical path control component may have a different density per unit area between the separation partition wall portion and the base partition wall portion.

[0017] Specifically, multiple holes are provided in the partition wall portion, and the density per unit area of ​​the separation partition wall portion and the base partition wall portion can vary depending on the holes.

[0018] In this case, the porosity of the base partition wall supporting the separation partition wall and the separation partition wall dividing the multiple receiving sections can be different. This allows for improvements in the driving characteristics, visibility, and reliability of the optical path control components.

[0019] In other words, the porosity inside the separation partition wall between the housing parts is relatively larger than the porosity of the base partition wall. Therefore, leakage current to the separation partition wall between the housing parts due to the dielectric properties of the partition wall can be minimized.

[0020] Therefore, it can prevent the driving voltage from increasing due to leakage current, thereby improving the driving characteristics of the optical path control components.

[0021] Furthermore, the strength of the substrate partition wall can be ensured by eliminating holes or reducing porosity in the substrate partition wall. Therefore, by stably supporting the separation partition wall by the substrate partition wall, the reliability of the optical path control component can be improved.

[0022] Furthermore, by making the holes provided inside the separation partition wall different for each region, that is, by making the porosity of the light-emitting part greater than that of the incident part, scattering and refraction caused by the holes can be prevented when the light is emitted in the direction of the user.

[0023] Therefore, when a user views the display, light scattering and refraction caused by the aperture can be minimized, thereby improving the visibility of the optical path control components. Attached Figure Description

[0024] Figure 1 This is a perspective view showing the optical path control component according to an embodiment.

[0025] Figure 2 and Figure 3 These are perspective views of the first substrate and the first electrode of the optical path control member according to the embodiment, and perspective views of the second substrate and the second electrode, respectively.

[0026] Figure 4 and Figure 5 This is a cross-sectional view showing the optical path control component according to an embodiment.

[0027] Figure 6 yes Figure 4 A magnified view of region A.

[0028] Figure 7 yes Figure 4 A magnified view of region A.

[0029] Figure 8 yes Figure 4 A magnified view of region A.

[0030] Figure 9 yes Figure 4 A magnified view of region A.

[0031] Figures 10 to 13 This is a diagram showing another cross-sectional view of the optical path control component according to an embodiment.

[0032] Figure 14 This is a perspective view showing an optical path control component according to another embodiment.

[0033] Figure 15 and Figure 16 These are perspective views of a first substrate and a first electrode, and perspective views of a second substrate and a second electrode, respectively, of an optical path control component according to another embodiment.

[0034] Figure 17 and Figure 18 This is a cross-sectional view showing a component for optical path control according to another embodiment.

[0035] Figure 19and Figure 20 This is a cross-sectional view of a display device that applies a light path control component according to an embodiment.

[0036] Figures 21 to 23 This is a diagram illustrating one embodiment of a display device that applies the optical path control component according to an embodiment. Detailed Implementation

[0037] In the following, embodiments of the invention will be described in detail with reference to the accompanying drawings. However, the spirit and scope of the invention are not limited to the partial embodiments described, but can be implemented in various other forms, and one or more elements of the embodiments may be selectively combined and substituted within the spirit and scope of the invention.

[0038] Furthermore, unless otherwise explicitly defined and described, the terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains, and terms (e.g., terms defined in common dictionaries) may be interpreted as having a meaning consistent with the meaning in the context of the prior art.

[0039] Furthermore, the terminology used in the embodiments of the present invention is for describing embodiments and is not intended to limit the invention. In this specification, unless specifically stated in the wording, the singular form may also include the plural form, and when described as “at least one (or more) of A(and) B and C,” it may include at least one of all combinations that can be combined with A, B, and C.

[0040] Furthermore, when describing the elements of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are used only to distinguish the element from other elements, and they do not limit the substance, order, or sequence of the elements.

[0041] In addition, when an element is described as being “connected,” “coupled,” or “bonded” to another element, it can include not only the element being “directly connected,” “coupled,” or “bonded” to other elements, but also the element being “connected,” “coupled,” or “bonded” to another element through which the element is connected to other elements.

[0042] Furthermore, when described as being formed or disposed "above" or "below" each element, "above" or "below" can include not only two elements directly connected to each other, but also one or more other elements formed or disposed between the two elements.

[0043] Furthermore, when expressed as "up" or "down", based on an element, it can include not only the upward direction but also the downward direction.

[0044] In the following description, an optical path control component according to an embodiment will be described with reference to the accompanying drawings. The optical path control component described below relates to a switchable optical path control component that is driven in various modes according to the movement of electrophoretic particles under an applied voltage.

[0045] Reference Figures 1 to 3 According to the embodiment, the optical path control component may include a first substrate 110, a second substrate 120, a first electrode 210, a second electrode 220, and a light conversion unit 300.

[0046] The first substrate 110 can support the first electrode 210. The first substrate 110 can be rigid or flexible.

[0047] Additionally, the first substrate 110 may be transparent. For example, the first substrate 110 may include a transparent substrate capable of transmitting light.

[0048] 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: polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyethersulfone (PES), cyclic olefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS). This is merely an example, and the embodiments are not limited thereto.

[0049] In addition, the first substrate 110 can be a flexible substrate with flexible properties.

[0050] Furthermore, the first substrate 110 can be a curved or bent substrate. That is, the optical path control member including the first substrate 110 can also be formed to have flexible, curved, or bent characteristics. Therefore, the optical path control member according to the embodiment can be modified into various designs.

[0051] The first substrate 110 may have a thickness of 30 μm to 80 μm.

[0052] The first electrode 210 can be disposed on one surface of the first substrate 110. Specifically, the first electrode 210 can be disposed on the upper surface of the first substrate 110. That is, the first electrode 210 can be disposed between the first substrate 110 and the second substrate 120.

[0053] The first electrode 210 may contain a transparent conductive material. For example, the first electrode 210 may contain a metal oxide, such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, titanium oxide, etc.

[0054] The first electrode 210 can be disposed on the first substrate 110 in the form of a film. Specifically, the light transmittance of the first electrode 210 can be approximately 80% or more.

[0055] The first electrode 210 may have a thickness of approximately 0.1 μm to approximately 0.5 μm.

[0056] Alternatively, the first electrode 210 may comprise various metals used to achieve low resistance. For example, the first electrode 210 may comprise at least one of chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), gold (Au), titanium (Ti), and alloys thereof.

[0057] The first electrode 210 may be disposed on the entire surface of one surface of the first substrate 110. Specifically, the first electrode 210 may be disposed as a surface electrode on one surface of the first substrate 110. However, the embodiments are not limited to this, and the first electrode 210 may be formed by a plurality of patterned electrodes having a predetermined pattern.

[0058] For example, the first electrode 210 may include multiple conductive patterns. Specifically, the first electrode 210 may include multiple intersecting mesh lines and multiple mesh openings formed by the mesh lines.

[0059] Therefore, even though the first electrode 210 contains metal, visibility can be improved because the first electrode cannot be seen from the outside. Furthermore, the increased light transmittance through the opening enhances the brightness of the light path control component according to the embodiment.

[0060] 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.

[0061] The second substrate 120 may contain a light-transmitting material. The second substrate 120 may contain a transparent material. The second substrate 120 may contain the same or similar material as the first substrate 110 described above.

[0062] For example, the second substrate 120 may include glass, plastic, or a flexible polymer film. For instance, the flexible polymer film may be made of any of the following: polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyethersulfone (PES), cyclic olefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS). This is merely an example, and the embodiments are not limited thereto.

[0063] In addition, the second substrate 120 can be a flexible substrate with flexible properties.

[0064] Furthermore, the second substrate 120 can be a curved or bent substrate. That is, the optical path control member including the second substrate 120 can also be formed to have flexible, curved, or bent characteristics. Therefore, the optical path control member according to the embodiment can be modified into various designs.

[0065] The second substrate 120 may have a thickness of 30 mm to 80 mm.

[0066] The second electrode 220 can be disposed on one surface of the second substrate 120. Specifically, the second electrode 220 can be disposed on the lower surface of the second substrate 120. That is, the second electrode 220 can be disposed on the surface of the second substrate 120 facing the first substrate 110. In other words, the second electrode 220 can be disposed facing the first electrode 210 on the first substrate 110. In other words, the second electrode 220 can be disposed between the first electrode 210 and the second substrate 120.

[0067] The second electrode 220 may contain a transparent conductive material. For example, the second electrode 220 may contain a metal oxide, such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, titanium oxide, etc.

[0068] The second electrode 220 can be disposed on the first substrate 110 in the form of a film. In addition, the light transmittance of the second electrode 220 can be approximately 80% or more.

[0069] The second electrode 220 may have a thickness of about 0.1 μm to about 0.5 μm.

[0070] Alternatively, the second electrode 220 can be made of various metals to achieve low resistance. For example, the second electrode 220 may contain at least one of chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), gold (Au), titanium (Ti), and alloys thereof.

[0071] The second electrode 220 may be disposed on the entire surface of one surface of the second substrate 120. Specifically, the second electrode 220 may be disposed as a surface electrode on one surface of the second substrate 120. However, the embodiments are not limited thereto, and the second electrode 220 may be formed by a plurality of patterned electrodes having a predetermined pattern.

[0072] For example, the second electrode 220 may include multiple conductive patterns. Specifically, the second electrode 220 may include multiple intersecting grid lines and multiple grid openings formed by the grid lines.

[0073] Therefore, even though the second electrode 220 contains metal, visibility can be improved because the second electrode 220 cannot be seen from the outside. Furthermore, the increased light transmittance through the opening enhances the brightness of the light path control member according to the embodiment.

[0074] The light conversion unit 300 may be disposed between the first substrate 110 and the second substrate 120. Specifically, the light conversion unit 300 may be disposed between the first electrode 210 and the second electrode 220.

[0075] An adhesive layer 400 may be provided between the light conversion section 300 and the first substrate 110 and between the light conversion section 300 and the second substrate 120, and the first substrate 110, the second substrate 120 and the light conversion section 300 may be bonded to each other through the adhesive layer 400.

[0076] Reference Figure 4 and Figure 5 A buffer layer 410 is provided between the light conversion part 300 and the first electrode 210 to improve the adhesion between the light conversion part 300 and the first electrode 210, and light conversion parts 300 and first electrodes 210 of different materials can be easily joined through the buffer layer 410.

[0077] Additionally, an adhesive layer 420 is provided between the second electrode 220 and the light conversion unit 300, thereby allowing the light conversion unit 300 and the second electrode 220 to be bonded together. The light conversion unit 300 may include a partition wall portion 310 and a receiving portion 320.

[0078] The partition wall 310 can be defined as a partition wall region that separates the receiving portions. That is, the partition wall 310 is a partition wall region that separates multiple receiving portions. And the receiving portion 320 can be defined as a region that becomes a light blocking portion and a light transmitting portion depending on the application of voltage.

[0079] The partition wall 310 and the receiving portion 320 can be arranged alternately. The partition wall 310 and the receiving portion 320 can be configured to have different widths. For example, the width of the partition wall 310 can be greater than the width of the receiving portion 320.

[0080] The partition wall portion 310 and the receiving portion 320 can be arranged alternately. Specifically, the partition wall portion 310 and the receiving portion 320 can be arranged alternately. That is, each partition wall portion 310 can be arranged between adjacent receiving portions 320, and each receiving portion 320 can be arranged between adjacent partition wall portions 310.

[0081] The partition wall 310 may contain a transparent material. The partition wall 310 may contain a material that can transmit light.

[0082] The partition wall portion 310 may contain a resin material. The partition wall portion 310 may contain a photocurable resin material. As an example, the partition wall portion 310 may contain a UV resin or a transparent photoresist resin. Alternatively, the partition wall portion 310 may contain a polyurethane resin or an acrylic resin.

[0083] The partition wall 310 can transmit light incident on either the first substrate 110 or the second substrate 120 toward the other substrate.

[0084] For example, in Figure 4 and Figure 5 In this process, light is emitted from the upper part of the second substrate 120, and the light can pass through the optical path control member to move below the first substrate 110.

[0085] A sealing part 500 for sealing the optical path control component may be provided on the side of the partition wall, and the side of the optical conversion part 300 may be sealed by the sealing part.

[0086] The containment portion 320 may include a dispersion 320a and light conversion particles 320b. That is, a light conversion material including the dispersion 320a and light conversion particles 320b may be disposed inside the containment portion 320. Specifically, the dispersion 320a is injected into and filled into the containment portion 320, and a plurality of light conversion particles 320b may be dispersed in the dispersion 320a.

[0087] Dispersion 320a may be a material used to disperse light-converting particles 320b. Dispersion 320a may contain a transparent material. Dispersion 320a may contain a nonpolar solvent. Additionally, dispersion 320a may contain a material capable of transmitting light. For example, dispersion 320a may include at least one of halogenated hydrocarbon oil, paraffinic oil, and isopropanol.

[0088] The light-converting particles 320b can be configured to be dispersed in the dispersion 330a. Specifically, the plurality of light-converting particles 320b can be configured to be spaced apart from each other in the dispersion 330a.

[0089] The light-converting particle 320b may include a material capable of absorbing light. That is, the light-converting particle 320b may be a light-absorbing particle. The light-converting particle 320b may have a color. For example, the light-converting particle 320b may have a color based on black. For example, the light-converting particle 320b may include carbon black particles.

[0090] The surface of the light-converting particle 320b can be charged. Therefore, depending on the applied voltage, the light-converting particle 320b can move in one direction.

[0091] The light transmittance of the containment portion 320 can be changed by the light conversion particles 320b. Specifically, by changing the light transmittance by the light conversion particles 320b, the containment portion 320 can be transformed into both a light blocking portion and a light transmitting portion. In other words, the transmittance of light passing through the containment portion 320 can be changed by the dispersion and aggregation of the light conversion particles 320b disposed in the dispersion body 320a.

[0092] For example, the optical path component according to the embodiment can be changed from a first mode to a second mode or from a second mode to a first mode by applying a voltage to the first electrode 210 and the second electrode 220.

[0093] Specifically, in the optical path control member 1000 according to the embodiment, the receiving portion 320 serves as a light blocking portion in the first mode, and can block light at a specific angle. That is, the viewing angle of the user from the outside can be narrowed.

[0094] Furthermore, in the light path control member 1000 according to the embodiment, the receiving portion 320 becomes a light-transmitting portion in the second mode, and in the light path control member according to the embodiment, light can pass through the partition wall portion 310 and the receiving portion 320. That is to say, the user's viewing angle from the outside can be widened.

[0095] The switching from the first mode to the second mode, that is, the conversion of the housing 320 from a light-blocking part to a light-transmitting part, can be achieved by the movement of the light-converting particles 320b in the housing 320. In other words, the light-converting particles 320b have an electric charge on their surface and can move towards the first electrode 210 or the second electrode 220 by means of an applied voltage or the characteristics of the electric charge. That is, the light-converting particles 320b can be electrophoretic particles.

[0096] Specifically, the housing 320 can be electrically connected to the first electrode 210 and the second electrode 220.

[0097] In this configuration, when no voltage is applied to the optical path control member from the outside, the light conversion particles 320b in the housing 320 are uniformly dispersed in the dispersion 330a, and light can be blocked by the light conversion particles 320b in the housing 320. Therefore, in the first mode, the housing 320 can be driven as a light blocking unit.

[0098] Alternatively, the light-converting particle 320b can be moved when a voltage is applied to the light path control member from the outside. For example, the light-converting particle 320b can be moved towards one end or the other end of the housing portion 320 by a voltage transmitted via the first electrode 210 and the second electrode 220. That is, the light-converting particle 320b can move from the housing portion 320 toward the first electrode or the second electrode.

[0099] Specifically, when a voltage is applied to the first electrode 210 and / or the second electrode 220, an electric field is formed between the first electrode 210 and the second electrode 220. Furthermore, the light-converting particles 320b in a negatively charged state can move towards the positively charged electrodes in the first electrode 210 and the second electrode 220 using the dispersion 320a as a medium.

[0100] Specifically, when a voltage is applied to the first electrode 210 and / or the second electrode 220, an electric field is formed between the first electrode 210 and the second electrode 220, and the charged carbon black, i.e., the light conversion particles, can move toward the positive electrode in the first electrode 210 and the second electrode 220 using the dispersion 320a as a medium.

[0101] In other words, such as Figure 4 As shown, when a voltage is applied to the first electrode 210 and / or the second electrode 220, the light-converting particles 320b can move towards the first electrode 210 within the dispersion 330a. That is, the light-converting particles 320b move in one direction, and the housing portion 320 can be driven as a light-transmitting portion.

[0102] In addition, such as Figure 5 As shown, when no voltage is applied to the first electrode 210 and / or the second electrode 220, the light conversion particles 320b can be uniformly dispersed in the dispersion body 320a to drive the housing part 320 as a light blocking part.

[0103] Therefore, depending on the user's surrounding environment, the optical path control member according to the embodiment can be driven in two modes. That is, when the user needs to transmit light only at a specific viewing angle, the housing is driven as a light blocking part, or in an environment where the user needs a wide viewing angle and high brightness, a voltage can be applied to drive the housing as a light transmitting part.

[0104] Therefore, since the optical path control component of this embodiment can be implemented in two modes according to the user's needs, the optical path control component can be applied regardless of the user's environment.

[0105] Meanwhile, in order to achieve improved characteristics of the light conversion section, the partition wall 310 can be formed with different densities for each region of the partition wall 310.

[0106] Specifically, the partition wall portion 310 may include a base partition wall portion 311 disposed on the first electrode 210 and a separation partition wall portion 312 disposed on the base partition wall portion 311. Specifically, the partition wall portion 310 may include a base partition wall portion 311 disposed below the receiving portion 320 and a separation partition wall portion 312 disposed on the base partition wall portion 311.

[0107] The base partition wall portion 311 and the separation partition wall portion 312 can be formed with different widths. Specifically, the width of the base partition wall portion 311 can be greater than the width of the separation partition wall portion 312. For example, the partition wall portion 310 can be formed with a shape that decreases in width as it extends from the base partition wall portion 311 to the separation partition wall portion 312.

[0108] The partition wall 310 may have dielectric properties to apply voltage to the housing portion 320. Therefore, since the substrate partition wall 311 has dielectric properties, even when the housing portion 320 disposed between the partition walls 310 and the first electrode 210 are spaced apart from each other, voltage can be applied to the interior of the housing portion 320.

[0109] On the other hand, since the separation partition 310 also has dielectric properties, there is a problem that current leaks through the separation partition 310 between the housing portions 320, which increases the driving voltage.

[0110] Therefore, since the optical path control member according to the embodiment has a plurality of holes arranged in the partition wall portion 310, and the partition wall portion is formed to have a different density for each region, the above-mentioned problem can be solved.

[0111] In the following description, various embodiments in which a plurality of holes are provided in the partition wall portion 310 will be described. In the following description, embodiments in which a display panel is disposed on a second substrate 120, light emitted from a light source of the display panel moves from the second substrate 120 to a first substrate 110, and a user identifies the display through the first substrate 110 will be primarily described.

[0112] Figures 6 to 9 This is an enlarged view showing the partition wall portion according to various embodiments.

[0113] Reference Figure 6 Multiple holes P can be provided in the partition wall portion 310. The holes P can be formed in the partition wall portion 310 by an air layer formed inside the material forming the partition wall portion. That is, the holes P can include air.

[0114] The hole P may be provided only in a specific area inside the partition wall portion 310. Specifically, the hole (P) may be provided only inside the separation partition wall portion (312) and may not be provided inside the base partition wall portion 311.

[0115] Due to the pore P, the partition wall portion 310 can have different densities for each region. Specifically, due to the pore P, the density per unit area of ​​the substrate partition wall portion 311 can be greater than the density per unit area of ​​the separation partition wall portion 312. Here, the density per unit area can be defined as the density per unit area of ​​the partition wall portion material. That is, by measuring the area of ​​the partition wall portion material per unit area, the density per unit area of ​​the partition wall portion material in the substrate partition wall portion 311 and the separation partition wall portion 312 can be measured.

[0116] In other words, due to the holes P provided therein, the separation partition wall 312 can have a relatively low density per unit area.

[0117] The pores P can be provided with a certain porosity relative to the entire separation partition wall 312. Specifically, the pores P can be provided with a porosity of 0.5% to 50% relative to the entire separation partition wall 312. Furthermore, the pores P can be provided with a porosity of 0.1% to 25% based on the entire partition wall 310.

[0118] When the hole P is contained with a porosity of less than 0.5% relative to the entire separation partition wall 312, the leakage current may increase from the housing portion along the direction of the separation partition wall because the dielectric properties of the separation partition wall 312 are not sufficiently reduced.

[0119] Furthermore, when the pore P is contained with a porosity greater than 50% relative to the entire separation partition wall 312, the light loss caused by the scattering and refraction of light passing through the separation partition wall 312 may increase due to the pores in the separation partition wall 312.

[0120] When the optical path control component is driven, the hole P provided in the separation partition wall 312 can reduce the leakage of current from the area between the housing parts to the separation partition wall 312.

[0121] In other words, by reducing the dielectric properties of the separation partition wall 312 through the hole P, leakage of current from the area between the housing portions to the separation partition wall 312 can be minimized.

[0122] Therefore, by reducing the driving voltage of the optical path control component, the optical path control component can be driven with a low voltage, thereby improving the driving characteristics.

[0123] In addition, since the hole P is only provided in the separation partition wall and not in the base partition wall, the support force of the partition wall can be ensured.

[0124] In other words, since no holes that reduce the support force are provided in the base partition wall portion with a relatively thick partition wall portion, the strength of the base partition wall portion is maintained and the support force of the separation partition wall portion provided on the partition wall portion can be ensured.

[0125] Reference Figure 7 A plurality of holes P may be provided in the partition wall portion 310. The holes P may be formed in the partition wall portion 310 by an air layer formed inside the material forming the partition wall portion. That is, the holes P may include air.

[0126] For each region within the partition wall 310, the holes P can be arranged in different volumes.

[0127] Specifically, the hole P can be provided in both the base partition wall portion 311 and the separation partition wall portion 312.

[0128] In this case, the volume of the hole P per unit area of ​​the base partition wall 311 and the volume of the hole P per unit area of ​​the separation partition wall 312 can be different from each other. Specifically, the volume of the hole P per unit area of ​​the base partition wall 311 can be smaller than the volume of the hole P per unit area of ​​the separation partition wall 312.

[0129] In other words, compared with the base partition wall portion 311, relatively more holes P can be provided in the separation partition wall portion 312.

[0130] The amount of holes P can be controlled during the formation of the partition wall portion 310. Specifically, after filling the mold interior corresponding to the shape of the partition wall portion with the resin material used to form it, the holes formed during the filling process are manually removed before demolding. Therefore, the holes P within the partition wall portion can be arranged differently for each area.

[0131] In this case, the hole P in the base partition wall 311 can retain a certain volume. Specifically, the hole P can be retained within a range that can maintain the supporting force of the base partition wall 311.

[0132] Therefore, when setting the partition wall, sufficient holes are retained to maintain the supporting force of the partition wall without removing all holes in the base partition wall. This prevents a decrease in processing efficiency due to hole removal.

[0133] Due to the pore P, the partition wall portion 310 can have a different density for each region. Specifically, due to the pore P, the density per unit area of ​​the substrate partition wall portion 311 can be greater than the density per unit area of ​​the separation partition wall portion 312.

[0134] In other words, due to the holes P provided therein, the separation partition wall 312 can have a relatively reduced density per unit area.

[0135] The pores P can be provided with a certain porosity relative to the entire separation partition wall 312. Specifically, the pores P can be provided with a porosity of 0.5% to 50% relative to the entire separation partition wall 312. Furthermore, the pores P can be provided with a porosity of 0.1% to 25% based on the entire partition wall 310.

[0136] When the hole P is contained with a porosity of less than 0.5% relative to the entire separation partition wall 312, the leakage current may increase from the housing portion toward the separation partition wall portion because the dielectric properties of the separation partition wall 312 are not sufficiently reduced.

[0137] Furthermore, when the pore P is contained with a porosity greater than 50% relative to the entire separation partition wall 312, the light loss caused by the scattering and refraction of light passing through the separation partition wall 312 may increase due to the pores in the separation partition wall 312.

[0138] When the optical path control component is driven, the hole P provided in the separation partition wall 312 can reduce the leakage of current from the area between the housing parts to the separation partition wall 312.

[0139] In other words, by reducing the dielectric properties of the separation partition wall 312 through the hole P, leakage of current from the area between the housing portions to the separation partition wall 312 can be minimized.

[0140] Therefore, by reducing the driving voltage of the optical path control component, the optical path control component can be driven with a low voltage, thereby improving the driving characteristics.

[0141] Reference Figure 8 A plurality of holes P may be provided in the partition wall portion 310. The holes P may be formed in the partition wall portion 310 by an air layer formed inside the material forming the partition wall portion. That is, the holes P may include air.

[0142] Hole P may be provided only in a specific area inside the partition wall portion 310. Specifically, hole P may be provided only inside the separation partition wall portion 312, and may not be provided inside the base partition wall portion 311.

[0143] Due to the pore P, the partition wall portion 310 can have a different density for each region. Specifically, due to the pore P, the density per unit area of ​​the substrate partition wall portion 311 can be greater than the density per unit area of ​​the separation partition wall portion 312.

[0144] In other words, due to the holes P provided therein, the separation partition wall 312 can have a relatively low density per unit area.

[0145] The pores P can be provided with a certain porosity relative to the entire separation partition wall 312. Specifically, the pores P can be provided with a porosity of 0.5% to 50% relative to the entire separation partition wall 312.

[0146] When the hole P is contained with a porosity of less than 0.5% relative to the entire separation partition wall 312, the leakage current may increase in the direction from the housing portion to the separation partition wall because the dielectric properties of the separation partition wall 312 are not sufficiently reduced.

[0147] Furthermore, when the pore P is included with a porosity exceeding 50% of the total porosity of the separation partition wall 312, the light loss may increase due to the scattering and refraction of light passing through the separation partition wall 312 caused by the pores in the separation partition wall 312.

[0148] For each region in the separation partition wall 312, the holes P can be provided in different amounts. That is, for each region in the separation partition wall 312, the holes P can be arranged with different volumes.

[0149] Specifically, the amount of hole P, i.e. the volume of hole P, can be reduced while extending inside the separation partition wall 312 in the direction of the base partition wall 311.

[0150] Furthermore, the amount of aperture P, i.e., the volume of aperture P, can be reduced while extending along the direction of light movement. In other words, the amount of aperture P, i.e., the volume of aperture P, can be reduced while extending along the direction of light movement.

[0151] When the optical path control component is driven, the hole P provided in the separation partition wall 312 can reduce current leakage between the receiving parts in the direction of the separation partition wall 312.

[0152] In other words, by reducing the dielectric properties of the separation partition wall 312 through the hole P, current leakage between the housing portions in the direction of the separation partition wall 312 can be minimized.

[0153] Therefore, by reducing the driving voltage of the optical path control component, the optical path control component can be driven with a low voltage, thereby improving the driving characteristics.

[0154] In addition, since the hole P is only provided in the separation partition wall and not in the base partition wall, the support force of the partition wall can be ensured.

[0155] In other words, since no holes that reduce the support force are provided in the base partition wall portion with a relatively thick partition wall portion, the strength of the base partition wall portion is maintained and the support force of the separation partition wall portion provided on the partition wall portion can be ensured.

[0156] Furthermore, the number of apertures (P), i.e., the volume of the apertures (P), is arranged differently for each region inside the partition wall. Therefore, the scattering of light emitted towards the user can be minimized. In other words, the number of apertures (P), i.e., the volume of the apertures (P), increases while decreasing based on the direction of light movement. Therefore, the scattering of light moving in the user's direction can be minimized, thereby improving the brightness of the light from the front.

[0157] Therefore, when a user views the monitor through the optical path control component, the increased frontal brightness allows for a clearer view of the monitor.

[0158] At the same time, Figure 8 The text primarily describes the absence of holes in the base partition wall; however, the embodiments are not limited to this, and other configurations may also be used. Figure 7 The partition wall shown includes holes to maintain the strength of the partition wall.

[0159] Therefore, when setting the partition wall, sufficient holes are retained to maintain the supporting force of the partition wall without removing all holes in the base partition wall. This prevents a decrease in processing efficiency due to hole removal.

[0160] Reference Figure 9 Multiple holes P may be provided in the partition wall portion 310. The holes P may be formed in the partition wall portion 310 by an air layer formed inside the material forming the partition wall portion. That is, the holes P may include air.

[0161] Hole P may be provided only in a specific area inside the partition wall portion 310. Specifically, hole P may be provided only inside the separation partition wall portion 312, and may not be provided inside the base partition wall portion 311.

[0162] Due to the pore P, the partition wall portion 31 can have a different density for each region. Specifically, due to the pore P, the density per unit area of ​​the substrate partition wall portion 311 can be greater than the density per unit area of ​​the separation partition wall portion 312.

[0163] That is, the separation partition wall 312 can have a relatively low density per unit area due to the holes P disposed therein.

[0164] The pores P can be provided with a certain porosity relative to the entire separation partition wall 312. Specifically, the pores P can be provided with a porosity of 0.5% to 50% relative to the entire separation partition wall 312. Furthermore, the pores P can be provided with a porosity of 0.1% to 25% based on the entire partition wall 310.

[0165] When the hole P is contained with a porosity of less than 0.5% relative to the entire separation partition wall 312, the leakage current may increase in the direction from the housing portion to the separation partition wall because the dielectric properties of the separation partition wall 312 are not sufficiently reduced.

[0166] Furthermore, when the pore P is included with a porosity exceeding 50% of the total porosity of the separation partition wall 312, the light loss caused by the scattering and refraction of light passing through the separation partition wall 312 may increase due to the pores in the separation partition wall 312.

[0167] Hole P can be provided in a portion of the interior of the separation partition wall 312. Specifically, hole P can be provided only in the direction of the second substrate 120 inside the separation partition wall 312.

[0168] For example, the separation partition wall portion 312 can be defined as a first separation partition wall portion 312a in the direction close to the first substrate 110 and a second separation partition wall portion 312b in the direction close to the second substrate 120, and the hole P can be provided only in the second separation partition wall portion 312b.

[0169] That is, the aperture P can be provided only in the second separation partition wall 312b near the light emitting part emitted from the display panel.

[0170] The first separation partition wall portion 312a and the second separation partition wall portion 312b may be configured to have different thicknesses. Specifically, the thickness of the second separation partition wall portion 312b may be less than or equal to the thickness of the first separation partition wall portion 312a.

[0171] The second separation partition wall 312b may have a thickness of 20% to 50% of the total thickness of the separation partition wall.

[0172] When the optical path control component is driven, the hole P provided in the separation partition wall 312 can reduce current leakage between the receiving parts in the direction of the separation partition wall 312.

[0173] In other words, by reducing the dielectric properties of the separation partition wall 312 through the hole P, current leakage between the receiving parts in the direction of the separation partition wall 312 can be minimized.

[0174] Therefore, by reducing the driving voltage of the optical path control component, the optical path control component can be driven with a low voltage, thereby improving the driving characteristics.

[0175] In addition, since the hole P is only provided in the separation partition wall and not in the base partition wall, the support force of the partition wall can be ensured.

[0176] That is, since no holes that reduce the supporting force of the base partition wall are provided in the base partition wall with a relatively thick width, the strength of the base partition wall is maintained and the supporting force of the separation partition wall provided on the partition wall can be ensured.

[0177] Furthermore, since the aperture P is only located in the direction near the light emitting part and not in the direction near the light incident part, the scattering of light emitted from the incident part to the user can be minimized. In other words, by arranging the aperture P only in the emitting part according to the direction of light movement, the scattering of light from the incident part can be minimized and the front brightness of the light from the incident part can be improved.

[0178] Therefore, when users view the monitor through the optical path control components, they can see a clearer display through improved front brightness.

[0179] At the same time, Figure 9 The text primarily describes a scenario where no holes are provided in the base partition wall; however, the embodiments are not limited to this, such as... Figure 7 As shown, the partition wall may include holes sufficient to maintain the strength of the partition wall.

[0180] Therefore, when setting the partition wall, sufficient holes are retained to maintain the supporting force of the partition wall without removing all the holes of the base partition wall, thereby preventing a decrease in processing efficiency due to the hole removal process.

[0181] The density per unit area of ​​the partition wall material of the separation partition wall and the base partition wall of the optical path control component according to the embodiment may be different.

[0182] Specifically, multiple holes are provided in the partition wall portion, and the density per unit area of ​​the separation partition wall portion and the base partition wall portion can vary depending on the holes.

[0183] In this case, the driving characteristics, visibility, and reliability of the optical path control component can be improved by changing the porosity of the base partition wall supporting the partition wall and the partition wall dividing the housing into multiple housings.

[0184] In other words, compared with the base partition wall, the porosity of the separation partition wall provided between the housing parts is relatively increased, and due to the dielectric properties of the partition wall, the leakage current flowing to the separation partition wall between the housing parts can be minimized.

[0185] Therefore, it can prevent the increase of driving voltage due to leakage current, thereby improving the driving characteristics of the optical path control components.

[0186] Furthermore, the substrate partition wall may be free of holes or have reduced porosity. Therefore, the strength of the substrate partition wall can be ensured. Thus, by stably supporting the separation partition wall with the substrate partition wall, the reliability of the optical path control component can be improved.

[0187] Furthermore, the holes provided in the separating partition wall can vary for each region; that is, the porosity of the light-emitting part can be greater than that of the light-incident part. Therefore, when light is emitted towards the user, scattering and refraction caused by the holes can be prevented.

[0188] Therefore, when a user views the display, light scattering and refraction caused by the aperture can be minimized, thus improving the visibility of the optical path control components.

[0189] Figures 10 to 13 This is a diagram showing another cross-sectional view of the optical path control component according to an embodiment.

[0190] Reference Figure 10 and Figure 11 ,and Figures 4 to 7 Unlike the previous embodiment, in the optical path control component, the receiving portion 320 can be configured to contact the electrode.

[0191] For example, the housing 320 can be configured to be in direct contact with the first electrode 210.

[0192] Therefore, since the first electrode 210 and the housing portion 320 are not spaced apart and are arranged to be in direct contact with each other, the voltage applied from the first electrode 210 can be easily transmitted to the housing portion 320.

[0193] Therefore, the movement speed of the light conversion particles 10 inside the housing 320 can be increased to improve the driving characteristics of the optical path control component.

[0194] Additionally, refer to Figure 12 and Figure 13 In the optical path control component according to this embodiment, and Figure 4 and Figure 5 The difference is that the housing 320 can be configured to have a constant tilt angle θ.

[0195] Specifically, refer to Figure 12 and 13 The receiving portion 320 can be configured to have an inclination angle θ relative to the first electrode 210 that is greater than 0° and less than 90°. Specifically, the receiving portion 320 can extend upward while having an inclination angle θ relative to one surface of the first electrode 210 that is greater than 0° and less than 90°.

[0196] Therefore, when the optical path component is used with the display panel, it can prevent ripples caused by the overlap between the pattern of the display panel and the housing portion 320 of the optical path component, thereby improving the user's visibility.

[0197] In the following text, reference will be made to Figures 14 to 22 This description describes an optical path control component according to another embodiment. In the description of the optical path control component of this other embodiment, descriptions identical to those in the above embodiment will be omitted, and the same reference numerals will be assigned to the same components.

[0198] Reference Figures 14 to 16 In another embodiment of the optical path control component, the first electrode 210 may be disposed inside the light conversion section 300. Specifically, the first electrode 210 may be disposed in the light conversion section embedded in the first substrate 110.

[0199] Reference Figure 17 and Figure 18 The first electrode 210 may include multiple electrode portions, and each electrode portion may be disposed inside each receiving portion 320.

[0200] In other words, the first electrode 210 can be disposed inside the housing 320 and extend in the same direction as the extension direction of the housing 320.

[0201] Therefore, the housing 320 can directly contact the first electrode 210. In other words, the dispersion 320a containing the light conversion particles 320b disposed inside the housing 320 can directly contact the first electrode 210.

[0202] The first electrode 210 can be formed from a metal paste containing conductive particles. Specifically, the first electrode 210 can be formed by filling and curing the metal paste inside the housing portion 320.

[0203] For example, the metal paste forming the first electrode 210 may include conductive particles and organic materials.

[0204] Conductive particles can include metals. For example, conductive particles can include silver particles. Conductive particles can be formed into a spherical shape.

[0205] The conductive particles can have a particle size of less than 1 μm. Specifically, the particle size of the conductive particles can be in the range of 0.05 μm to 1 μm. When the particle size of the conductive particles is less than 0.05 μm, the conductive particles may agglomerate in the binder. When the particle size of the conductive particles exceeds 1 μm, the filling characteristics may be reduced when the metal paste is filled into the containment.

[0206] Furthermore, the particle size of the conductive particles can be less than or equal to the width w of the containment portion. Here, the width w of the containment portion can be defined as the longer width of the containment portion, which has a longer width and a shorter width.

[0207] Specifically, the particle size of the conductive particles can be 0.01 to 0.2 times the width w of the containment portion.

[0208] When the particle size of the conductive particles is less than 0.01 times the width w of the receiving portion, when the metal paste is filled into the receiving portion, the conductive particles may adhere to the inner surface of the receiving portion while moving to the bottom surface of the receiving portion due to their small size. Therefore, the number of conductive particles in the first electrode provided on the bottom surface of the receiving portion may be reduced, which may lead to a decrease in conductivity.

[0209] Furthermore, when the particle size of the conductive particles exceeds 0.2 times the width w of the receiving portion, during the filling of the receiving portion with metal paste, the conductive particles may become fixed in the middle of the receiving portion and not move to the bottom surface of the receiving portion due to their large size. Therefore, the number of conductive particles in the first electrode provided on the bottom surface of the receiving portion may decrease, which may reduce the conductivity.

[0210] Conductive particles and organic materials may be contained separately in a constant weight percent. Organic materials may include adhesives, curing agents, and other additives.

[0211] Specifically, the content of conductive particles can be from approximately 60% to approximately 85% by weight, based on the total weight of the metal paste. When the content of conductive particles is less than approximately 60% by weight based on the total weight of the metal paste, the conductivity of the first electrode formed from the metal paste may decrease. Moreover, when the content of conductive particles exceeds approximately 85% by weight based on the total weight of the metal paste, the viscosity of the metal paste may increase, and therefore, the filling characteristics may decrease when the metal paste is filled into the containment portion.

[0212] Based on the total weight of the metal paste, the content of organic materials in the binder and additives can be from about 15% by weight to about 40% by weight.

[0213] Based on all organic materials, the binder content can be 40% to 50% by weight, the curing agent content can be 30% to 40% by weight, and the additive content can be 10% to 30% by weight.

[0214] The adhesive is the primary material used to form the adhesion force of the first electrode formed from the metal paste, and may include polymeric materials such as epoxy resin, ethyl cellulose, or acrylate.

[0215] Additionally, a curing agent is included to cure the metal paste, and the curing agent may include at least one of acid anhydrides, amines, phenols, and thiols as a polymer for curing.

[0216] In addition, additives may include dispersants for dispersing metal slurries and thixotropic additives for imparting thixotropy.

[0217] The first electrode 210 may include a plurality of holes. Specifically, a plurality of holes may be formed in the first electrode 210 formed by curing a metal paste.

[0218] The porosity of the first electrode 210 can be from 5% to 45%. It may be difficult to achieve a porosity of less than 5% in the process. In addition, when the porosity of the first electrode 210 exceeds 45%, the dispersion or light conversion particles inside the containment may penetrate into the pores, and the adhesion of the first electrode 210 may decrease.

[0219] When the porosity of the first electrode 210 is within the range of 5% to 45%, the interfacial surface area between the first electrode 210 and the dispersion disposed on the first electrode 210 increases, thereby effectively forming an electric field and improving the driving characteristics of the optical path control component.

[0220] Meanwhile, the metal paste forming the first electrode 210 may include conductive particles with different particle sizes to meet the porosity of the first electrode 210. Specifically, the metal paste may include first conductive particles having a particle size of 0.5 μm to 1.5 μm and second conductive particles having a particle size of 6.5 μm to 7.5 μm, and the content of the first conductive particles may be 25% to 35% by weight relative to all conductive particles, and the content of the second conductive particles may be 65% to 75% by weight based on all conductive particles.

[0221] Therefore, as described above, the porosity of the first electrode 210 formed from a metal slurry comprising first and second conductive particles of different particle sizes and amounts is achieved to be 5% to 45%. Thus, adhesion and driving properties can be improved.

[0222] The first electrode 210 can be formed inside the receiving portion 320 to have a thickness less than the thickness T of the receiving portion 320. Here, the thickness t1 of the first electrode 210 can be defined as the minimum thickness of the first electrode. Specifically, since the first electrode 210 is formed such that the upper surface of the first electrode 210 protrudes in the direction of the bottom surface of the receiving portion inside the receiving portion, the thickness t1 of the first electrode 210 can have a minimum thickness and a maximum thickness.

[0223] The thickness tl of the first electrode 210 described below can be defined as the minimum thickness of the first electrode 210, which is the center of the convex surface of the first electrode 210.

[0224] Specifically, the thickness tl of the first electrode 210 can be 5% to 20% of the thickness T of the receiving portion 320. For example, the thickness tl of the first electrode 210 can be 5 μm to 20 μm.

[0225] When the thickness t1 of the first electrode 210 is less than 5% of the thickness T of the housing portion 320, the conductivity of the first electrode 210 may decrease, and therefore the driving characteristics of the optical path control member may decrease. Furthermore, when the thickness t1 of the first electrode 210 exceeds 20% of the thickness T of the housing portion 320, the first electrode 210 blocks the movement of light when the optical path control member passes through the light conversion unit 300, which may reduce the transmittance of the optical path control member in the second mode.

[0226] Furthermore, the thickness tl of the first electrode 210 can be related to the width w of the receiving portion 320. Specifically, the aspect ratio between the thickness tl of the first electrode 210 and the width w of the receiving portion 320 can be from 1.1 to 1.4.

[0227] By controlling the aspect ratio of the thickness t1 of the first electrode 210 to the width w of the housing portion 320 to 1:1 to 1:4, the conductivity of the first electrode 210 is ensured, the driving characteristics of the optical path control component can be improved, and the interference of the first electrode 210 on the movement of light can be minimized, so as to ensure the transmittance of the optical path control component in the second mode.

[0228] Meanwhile, the first electrodes 210 disposed in each of the receiving sections may have the same or similar thickness.

[0229] Specifically, the thickness difference between the plurality of first electrodes 210 disposed in each receiving portion can be 5% to 30% of the average thickness of the first electrodes 210. It is difficult to achieve a thickness difference of less than 5% of the average thickness of the plurality of first electrodes 210 in the manufacturing process, and when the thickness difference exceeds 30% of the average thickness of the first electrodes 210, the conductivity in each receiving portion differs due to the thickness difference of the first electrodes disposed in each receiving portion. Therefore, the overall driving characteristics of the optical path control component may be reduced due to the difference in driving speed of each receiving portion.

[0230] In the optical path control component according to another embodiment, the first electrode for applying voltage to the housing portion may be disposed inside the housing portion rather than outside the housing portion.

[0231] Therefore, the dispersion containing the light-converting particles in the housing can be configured to be in direct contact with the first electrode. Thus, since the distance difference between the dispersion and the first electrode is eliminated, the voltage applied from the first electrode is directly transmitted to the dispersion, thereby increasing the driving speed of the optical path control component.

[0232] Typically, the first electrode is disposed outside the receiving portion, and therefore the dispersion in the receiving portion and the first electrode are set to be separated by the thickness of the substrate partition wall.

[0233] Therefore, the choice of material for the partition wall is limited due to the definite dielectric properties of the substrate partition wall. Furthermore, as the thickness of the substrate partition wall increases, the speed at which the voltage applied from the first electrode to the housing decreases, thus limiting the thickness of the substrate partition wall.

[0234] However, in the optical path control component according to another embodiment, the distance difference between the dispersion and the first electrode can be eliminated by patterning the first electrode and placing it within the receiving portion. This improves the driving speed of the optical path control component. Furthermore, since there are no restrictions on the dielectric properties of the substrate partition wall, the material of the partition wall can be freely selected. Additionally, by increasing the thickness of the substrate partition wall, the supporting force of the partition wall can be ensured. This improves the reliability of the optical path control component.

[0235] Specifically, the thickness t2 of the substrate partition wall portion 311 can be from about 5 μm to 35 μm. Therefore, since the thickness t2 of the substrate partition wall portion 311 can be formed to be greater than that of the prior art, the strength of the substrate partition wall portion 311 can be improved, thereby improving the supporting force of the partition wall portion.

[0236] Furthermore, by controlling the composition and composition ratio of the metal paste forming the first electrode and the particle size of the conductive particles, the filling and adhesion characteristics of the first electrode can be ensured. Moreover, by making the thickness of the multiple first electrodes disposed in multiple receiving portions uniform, the driving speed difference of each receiving portion can be minimized, and the driving characteristics of the optical path control component can be improved.

[0237] Furthermore, since the partition wall portion, which includes resin material, is bonded to the substrate, which also includes resin material, rather than to the electrode, which includes metal material, the first partition wall portion, which serves as the light conversion part or substrate partition wall portion, is in direct contact with the first substrate. Therefore, the adhesion between the light conversion part and the substrate can be improved.

[0238] In the following text, refer to Figures 19 to 23 The present invention will describe a display device and a display apparatus that apply optical path control components according to embodiments.

[0239] Reference Figure 19 and 20According to the embodiment, the optical path control component 1000 can be disposed above or below the display panel 2000.

[0240] The display panel 2000 and the optical path control component 1000 can be configured to be bonded to each other. For example, the display panel 2000 and the optical path control component 1000 can be bonded to each other via an adhesive layer 1500. The adhesive layer 1500 can be transparent. For example, the adhesive layer 1500 can include an adhesive or adhesive layer containing an optically transparent adhesive material.

[0241] The adhesive layer 1500 may include a release film. Specifically, when bonding the optical path control component to the display panel, the optical path control component and the display panel can be bonded after removing the release film.

[0242] At the same time, refer to Figure 19 and Figure 20 One end or both ends of the optical path control component may protrude, and the light conversion part may not be provided on the protrusion. The protruding area is the electrode connection part, and an external printed circuit board can be connected to the optical path control component through the electrode connection part.

[0243] 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 component may be formed below the liquid crystal panel. That is, when the user viewing side of the liquid crystal panel is defined as the upper part of the liquid crystal panel, the light path control component may be disposed below the liquid crystal panel. The display panel 2000 may be formed with the following structure: a first substrate 2100 including thin film transistors (TFTs) and pixel electrodes and a second substrate 2200 including a color filter layer are combined, and a liquid crystal layer is disposed therebetween.

[0244] Alternatively, the display panel 2000 can be a liquid crystal display panel with a color filter on transistor (COT) structure. In this COT structure, thin-film transistors, color filters, and a black matrix are formed on the first substrate 2100, and a second substrate 2200 is bonded to the first substrate 2100, with a liquid crystal intercalation layer provided therebetween. That is, thin-film transistors can be formed on the first substrate 2100, a protective film can be formed on the thin-film transistors, and a color filter layer can be formed on the protective film. Furthermore, pixel electrodes in contact with the thin-film transistors can be formed on the first substrate 2100. In this case, to improve the aperture ratio and simplify the mask process, the black matrix can be omitted, and a common electrode can be formed to serve as the black matrix.

[0245] In addition, when the display panel 2000 is a liquid crystal display panel, the display device may also include a backlight unit that provides light from the back surface of the display panel 2000.

[0246] In other words, such as Figure 19 As shown, the light path control component is located below the liquid crystal panel and above the backlight unit 3000, and the light path control component can be located between the backlight unit 3000 and the display panel 2000.

[0247] Or, such as Figure 20 As shown, when the display panel 2000 is an organic light-emitting diode (OLED) panel, a light path control component can be formed on the OLED panel. That is, when the surface seen by the user of the OLED panel is defined as the upper part of the OLED panel, the light path control component can be disposed on the OLED panel. The display panel 2000 may include self-emissive elements that do not require a separate light source. In the display panel 2000, thin-film transistors can be formed on the first substrate 2100, and organic light-emitting elements in contact with the thin-film transistors can be formed. The organic light-emitting element may include an anode, a cathode, and an organic light-emitting layer formed between the anode and cathode. Furthermore, a second substrate 2200 configured as a packaging substrate for encapsulation may be further included on the organic light-emitting element.

[0248] In other words, light emitted from the display panel 2000 or the backlight unit 3000 can be moved from the second substrate 120 of the light path control component to the first substrate 110.

[0249] Furthermore, although not shown in the accompanying drawings, a polarizing plate may be further disposed between the optical path control member 1000 and the display panel 2000. The polarizing plate may be a linear polarizing plate or a polarizing plate that prevents reflection of external light. For example, when the display panel 2000 is a liquid crystal display panel, the polarizing plate may be a linear polarizing plate. Furthermore, when the display panel 2000 is an organic light-emitting display panel, the polarizing plate may be a polarizing plate that prevents reflection of external light.

[0250] Furthermore, an additional functional layer 1300, such as an anti-reflection layer or an anti-glare layer, can be further provided on the optical path control component 1000. Specifically, the functional layer 1300 can be bonded to one surface of the first substrate 110 of the optical path control component. Although not shown in the figures, the functional layer 1300 can be bonded to the first substrate 110 of the optical path control component via an adhesive layer. Additionally, a release film for protecting the functional layer can be provided on the functional layer 1300.

[0251] Furthermore, a touch panel can be further installed between the display panel and the optical path control components.

[0252] Although the accompanying drawings show the light path control component disposed at the upper part of the display panel, the embodiments are not limited thereto, and the light path control component can be disposed in various positions, such as a light-adjustable position, i.e., the lower part of the display panel, between the second substrate and the first substrate of the display panel, etc.

[0253] Furthermore, in the accompanying drawings, the light conversion portion of the light path control member according to the embodiment is shown in a direction parallel or perpendicular to the outer surface of the second substrate; however, the light conversion portion can be formed to be tilted at a predetermined angle from the outer surface of the second substrate. Therefore, ripples occurring between the display panel and the light path control member can be reduced.

[0254] Reference Figures 21 to 23 The optical path control component according to the embodiment can be applied to various display devices.

[0255] Reference Figures 21 to 23 The optical path control component according to the embodiment can be applied to a display device that displays images.

[0256] For example, such as Figure 21 As shown, when power is applied to the light path control component, the receiving unit acts as a light-transmitting part, thereby enabling the display device to be driven in an open mode, such as... Figure 22 As shown, when no power is applied to the light path control member, the receiving unit acts as a light blocking part, causing the display device to be driven in a light blocking mode.

[0257] Therefore, users can easily drive the display device in either privacy or normal mode depending on the amount of power applied.

[0258] Light emitted from the backlight unit or the self-emissive device can move from the first substrate to the second substrate. Alternatively, light emitted from the backlight unit or the self-emissive device can also move from the second substrate to the first substrate.

[0259] Additionally, refer to Figure 23 The display device that uses the optical path control component according to the embodiment can also be applied to the interior of a vehicle.

[0260] For example, a display device including the optical path control component according to an embodiment can display video confirmation information of the vehicle and the vehicle's movement route. The display device can be disposed between the driver's seat and the passenger seat of the vehicle.

[0261] Furthermore, the optical path control component according to the embodiment can be applied to a dashboard that displays vehicle speed, engine speed, alarm signals, etc.

[0262] Furthermore, the optical path control component according to the embodiment can be applied to the front windshield (FG) or the left and right side windows of a vehicle.

[0263] The features, structures, effects, etc., described in the above embodiments are included in at least one embodiment of the present invention, but are not limited to one embodiment. Furthermore, those skilled in the art can combine or modify the features, structures, and effects shown in each embodiment with respect to other embodiments. Therefore, it should be understood that such combinations and modifications are included within the scope of the present invention.

[0264] Furthermore, the above description of the embodiments is merely illustrative and does not limit the invention. Those skilled in the art will understand that several variations and applications not mentioned above can be made without departing from the essential characteristics of the invention. For example, the specific components represented in the embodiments can be changed. Additionally, it should be interpreted that differences associated with such changes and applications are included within the scope of the invention as defined in the appended claims.

Claims

1. An optical path control component, comprising: First substrate; The first electrode is disposed on the first substrate; The second substrate is disposed on the first substrate; The second electrode is disposed below the second substrate; as well as The light conversion unit is disposed between the first electrode and the second electrode. The light conversion unit includes alternating partition walls and receiving sections. The containing portion includes a dispersion and light-converting particles disposed within the dispersion. The light transmittance changes depending on the voltage applied to the housing portion. The partition wall portion includes a base partition wall portion disposed between the first electrode and the receiving portion, and a separation partition wall portion disposed on the base partition wall portion. The partition wall portion has multiple holes. The separation partition wall includes a first separation partition wall, configured to be close to the first substrate and with a horizontal width decreasing towards the second electrode; and a second separation partition wall, disposed on the first separation partition wall, configured to be close to the second substrate and with a horizontal width increasing towards the first electrode. Wherein, the width of the lower surface of the first separation partition wall is greater than the width of the upper surface of the second separation partition wall. The light-converting particles move toward the first electrode and condense according to the applied voltage. Wherein, the hole contains air, and Wherein, the volume per unit area of ​​the hole in the second separation partition wall is greater than the volume per unit area of ​​the hole in the first separation partition wall and the volume per unit area of ​​the hole in the base partition wall.

2. The optical path control component according to claim 1, wherein, Light emitted from the light source passes through the first substrate and the second substrate. The light moves from the second substrate to the first substrate.

3. The optical path control component according to claim 1, wherein, The hole is only provided in the separation partition wall.

4. The optical path control component according to claim 3, wherein, The pores are arranged with a porosity of 0.5% to 50% relative to the total volume of the separated partition wall.

5. The optical path control component according to claim 3, wherein, The pores are arranged with a porosity of 0.1% to 25% relative to the total volume of the separated partition wall.

6. The optical path control component according to claim 1, in, The hole is only provided in the second separation partition wall.

7. The optical path control component according to claim 6, wherein, The thickness of the second separation partition wall is 20% to 50% of the total thickness of the separation partition wall.

8. The optical path control component according to claim 1, wherein, The first electrode is disposed inside the receiving portion.

9. The optical path control component according to claim 8, wherein, The first electrode includes conductive particles. The conductive particles have a particle size of 0.05 μm to 1 μm.

10. The optical path control component according to claim 9, wherein, The particle size of the conductive particles is 0.01 to 0.2 times the width of the receiving portion.

11. The optical path control component according to claim 8, wherein, The first electrode includes a hole.

12. The optical path control component according to claim 11, wherein, The porosity of the first electrode is 5% to 45%.

13. The optical path control component according to claim 11, wherein, The first electrode includes a first conductive particle and a second conductive particle. The first conductive particle has a particle size of 0.5 μm to 1.5 μm. The particle size of the second conductive particle is 6.5 μm to 7.5 μm.

14. The optical path control component according to claim 8, wherein, The thickness of the first electrode is 5% to 20% of the thickness of the receiving portion.

15. The optical path control component according to claim 8, wherein, The aspect ratio of the thickness of the first electrode to the width of the receiving portion is 1.1 to 1.

4.

16. The optical path control component according to claim 8, wherein, The containment unit includes multiple containment units. The thickness difference between the first electrodes disposed in the plurality of receiving portions is 5% to 30% of the average thickness of the first electrodes.

17. A display device, comprising: Display panel; as well as An optical path control component is disposed on the display panel; The optical path control component includes: First substrate; The first electrode is disposed on the first substrate; The second substrate is disposed on the first substrate; The second electrode is disposed below the second substrate; and The light conversion unit is disposed between the first electrode and the second electrode. The light conversion unit includes alternating partition walls and receiving sections. The containing portion includes a dispersion and light-converting particles disposed within the dispersion. The light transmittance changes depending on the voltage applied to the housing portion. The partition wall portion includes a base partition wall portion disposed between the first electrode and the receiving portion, and a separation partition wall portion disposed on the base partition wall portion. The partition wall portion has multiple holes. The separation partition wall includes a first separation partition wall, configured to be close to the first substrate and with a horizontal width decreasing towards the second electrode; and a second separation partition wall, disposed on the first separation partition wall, configured to be close to the second substrate and with a horizontal width increasing towards the first electrode. Wherein, the width of the lower surface of the first separation partition wall is greater than the width of the upper surface of the second separation partition wall. The light-converting particles move toward the first electrode and aggregate according to the applied voltage. The light emitted from the display panel moves from the second separation partition portion in a direction toward the base partition portion, and Wherein, the volume per unit area of ​​the hole in the second separation partition wall is greater than the volume per unit area of ​​the hole in the first separation partition wall and the volume per unit area of ​​the hole in the base partition wall.

18. The display device according to claim 17, wherein, Light emitted from the light source passes through the first substrate and the second substrate. The light moves from the second substrate to the first substrate.

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