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 on the first substrate, a first light conversion unit disposed on the first electrode, a second substrate disposed on the first light conversion unit, a second electrode including a second-1 electrode extending in a first direction and a second-2 electrode extending in a second direction intersecting the first direction, disposed between the second substrate and the first light conversion unit, and a third electrode disposed on an upper surface of the second substrate.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2022-0159118, filed on November 24, 2022, the entire contents of which are incorporated herein by reference for all purposes. Technical Field

[0003] This disclosure relates to optical path control components and display devices including them. Background Technology

[0004] A light-blocking film blocks the transmission of light from a light source and is attached to the front surface of a display panel used in mobile phones, laptops, tablets, vehicle navigation devices, vehicle touchscreens, etc. The light-blocking film adjusts the viewing angle of the light according to the incident angle of the light so as to express clear image quality at the user's desired viewing angle when displaying a transmissive screen.

[0005] In addition, shading film can be used on windows of vehicles, buildings, etc., to partially block external light to prevent glare or prevent the interior from being seen from the outside.

[0006] In other words, a light-blocking film can be a light path conversion component that controls the movement path of light, blocks light in a specific direction, and transmits light in a specific direction. Therefore, the light transmission angle is controlled by the light-blocking film, allowing the user's viewing angle to be controlled. Summary of the Invention

[0007] The purpose of this disclosure is to provide an optical path control component that can switch between a first mode (shared mode) and a second mode (private mode).

[0008] Another objective of this disclosure is to provide a display device including an optical path control component capable of switching between a first mode (shared mode) and a second mode (private mode).

[0009] The purpose of this disclosure is not limited to the above-mentioned purposes, and other technical purposes not mentioned can be clearly understood by those skilled in the art from the following description.

[0010] To achieve the above objectives, the optical path control component according to the embodiment includes: a first substrate; a first electrode disposed on the first substrate; a first light conversion unit disposed on the first electrode; a second substrate disposed on the first light conversion unit; a second electrode, the second electrode including a second-1 electrode disposed between the second substrate and the first light conversion unit and extending along a first direction and a second-2 electrode extending along a second direction intersecting the first direction; and a third electrode disposed on the upper surface of the second substrate.

[0011] To achieve the above objectives, the display device according to the embodiment includes: a display panel; and an optical path control member on the display panel, wherein the optical path control member includes: a first substrate; a first electrode disposed on the first substrate; a first light conversion unit disposed on the first electrode; a second substrate disposed on the first light conversion unit; a second electrode, the second electrode including a second-1 electrode disposed between the second substrate and the first light conversion unit and extending along a first direction and a second-2 electrode extending along a second direction intersecting the first direction; and a third electrode disposed on the upper surface of the second substrate.

[0012] Further details of the implementation methods are included in the detailed description and accompanying drawings.

[0013] By means of the optical path control component and display device according to the embodiment, it is possible to switch between a first mode (shared mode) and a second mode (private mode) in multiple directions.

[0014] Furthermore, the front transmittance can be increased by utilizing the difference in refractive index between the light transmission section and the light path change section of the light conversion unit.

[0015] The effects of the implementation methods are not limited to those described herein, and many more effects are included in the specification. Attached Figure Description

[0016] Figure 1 This is a plan view of the second and third electrodes according to the embodiment.

[0017] Figure 2 This is a perspective view of the optical path control component according to the embodiment.

[0018] Figure 3 It is along Figure 1 The cross-sectional view taken by line A-A' in the diagram.

[0019] Figure 4 It is along Figure 1 The cross-sectional view taken by line B-B' in the diagram.

[0020] Figure 5 It is shown Figure 1 Cross-sectional views of the second and third modes of the optical path control component.

[0021] Figure 6 This is a schematic diagram showing the optical path in the first mode.

[0022] Figure 7 This is a schematic diagram showing the optical paths in the second and third modes.

[0023] Figure 8It is a graph showing the incident angle of light (S-polarized light) incident from the light transmission section to the light path change section and the reflectivity of light caused by the difference in refractive index between the light transmission section and the light path change section.

[0024] Figure 9 It is a graph showing the incident angle of light (P-polarized light) incident from the light transmission section to the light path change section and the reflectivity of light caused by the difference in refractive index between the light transmission section and the light path change section.

[0025] Figure 10a and Figure 10b These are views showing the frontal transmittance in the second and first modes, respectively.

[0026] Figure 11 This is a perspective view of a display device according to an embodiment.

[0027] Figure 12 yes Figure 11 Cross-sectional view.

[0028] Figure 13 This is a cross-sectional view of the optical path control component according to another embodiment in the first mode.

[0029] Figure 14 yes Figure 13 A cross-sectional view of the optical path control component in the second mode.

[0030] Figure 15 yes Figure 13 A cross-sectional view of the optical path control component in the third mode.

[0031] Figure 16 This is a cross-sectional view of the optical path control component according to yet another embodiment.

[0032] Figure 17 This is a cross-sectional view of the optical path control component according to yet another embodiment.

[0033] Figure 18 This is a cross-sectional view of the optical path control component according to yet another embodiment.

[0034] Figure 19 This is a plan view of the second and third electrodes according to another embodiment.

[0035] Figure 20 This is a plan view of the second and third electrodes according to yet another embodiment.

[0036] Figure 21 This is a plan view of the second and fourth electrodes according to yet another embodiment.

[0037] Figure 22 This is a perspective view of an optical path control component according to yet another embodiment.

[0038] Figure 23 It is along Figure 21 The cross-sectional view taken from line C-C' in the diagram.

[0039] Figure 24 It is shown Figure 23 Cross-sectional views of the second and third modes of the optical path control component.

[0040] Figure 25 This is a plan view of the second and fourth electrodes according to yet another embodiment. Detailed Implementation

[0041] The advantages and features of this disclosure, as well as methods for achieving these advantages and features, will become apparent from the following detailed description of embodiments in conjunction with the accompanying drawings. However, this disclosure is not limited to the embodiments set forth below, but can be implemented in various different forms. The following embodiments are provided only to fully disclose this disclosure and to inform those skilled in the art of its scope, and this disclosure is limited only by the scope of the appended claims.

[0042] When an element or layer is referred to as being "on" another element or layer, it includes all cases where the other layer or element is directly inserted onto or between the other element. Throughout this specification, the same reference numerals refer to the same parts. The shapes, dimensions, ratios, angles, numbers, etc., disclosed in the drawings used to describe embodiments are examples, and this disclosure is not limited to the matters shown.

[0043] Although terms like "first," "second," etc., are used to describe various components, it is self-evident that these elements are not limited by these terms. These terms are only used to distinguish one component from another. Therefore, it is self-evident that the first component mentioned below can be a second component within the technical concept of this disclosure.

[0044] Each feature of the various embodiments of this disclosure may be combined in part or in whole, or may be combined with each other. Various interlocks and drives are technically possible, and each embodiment may be implemented independently of each other or may be implemented together in a related relationship.

[0045] In the following description, specific implementation methods will be described with reference to the accompanying drawings.

[0046] Figure 1 This is a plan view of the second and third electrodes according to the embodiment. Figure 2 This is a perspective view of the optical path control component according to the embodiment. Figure 3 It is along Figure 1 The cross-sectional view taken by line A-A' in the diagram. Figure 4 It is along Figure 1The cross-sectional view taken by line B-B' in the diagram. Figure 5 It is shown Figure 1 Cross-sectional views of the second and third modes of the optical path control component.

[0047] Reference Figures 1 to 5 According to the embodiment, the optical path control component 1 may include a first substrate 10, a first electrode 20 on the first substrate 10, light conversion units 31, 32 and 32' on the first electrode 20, second electrodes 40 and 40' on the light conversion units 31, 32 and 32', a second substrate 50 on the second electrodes 40 and 40', and third electrodes 60 and 60' on the second substrate 50. The light conversion units 31, 32 and 32' may be disposed between the first electrode 20 and the second electrodes 40 and 40'.

[0048] The first substrate 10 can support the first electrode 20. The first substrate 10 can be rigid or flexible.

[0049] Furthermore, the first substrate 10 may be transparent. For example, the first substrate 10 may include a transparent substrate capable of transmitting light.

[0050] The first substrate 10 may comprise glass, plastic, or a flexible polymer film. For example, the flexible polymer film may be made of any of polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethyl naphthalene oxide (PEN), polyethersulfone (PES), cyclic olefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS), which are merely examples and are not necessarily limited thereto.

[0051] In addition, the first substrate 10 can be a flexible substrate with flexible properties.

[0052] Furthermore, the first substrate 10 can be a curved or bent substrate. That is, the optical path control member including the first substrate 10 can also be formed to have flexible, curved, or bent characteristics. For this reason, the optical path control member according to the embodiment can be changed to various designs.

[0053] The first substrate 10 may have a thickness of about 1 mm or less.

[0054] The first electrode 20 may be disposed on one surface of the first substrate 10. More specifically, the first electrode 20 may be disposed on the upper surface of the first substrate 10. That is, the first electrode 20 may be disposed between the first substrate 10 and the second substrate 50.

[0055] The first electrode 20 may contain a transparent conductive material. For example, the first electrode 20 may contain a metal oxide, such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, or titanium oxide.

[0056] The light transmittance of the first electrode 20 can be about 80% or greater. More specifically, the first electrode 20 can be disposed on the entire surface of one surface of the first substrate 10. That is, the first electrode 20 can be configured as a surface electrode on the first substrate 10.

[0057] The first electrode 20 may have a thickness of about 10 nm to about 50 nm.

[0058] Alternatively, the first electrode 20 may comprise various metals to achieve low resistance. For example, the first electrode 20 may comprise at least one metal selected from chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), gold (Au), titanium (Ti), and alloys thereof.

[0059] The first electrode 20 may be disposed on the entire surface of one surface of the first substrate 10. More specifically, the first electrode 20 may be disposed as a surface electrode on one surface of the first substrate 10. However, the embodiments are not limited thereto, and the first electrode 20 may be formed of a plurality of patterned electrodes having a predetermined pattern.

[0060] The second substrate 50 may be disposed on the first substrate 10. The second substrate 50 may face the first substrate 10.

[0061] The second substrate 50 may contain a light-transmitting material. The second substrate 50 may contain a transparent material. The second substrate 50 may contain the same or similar material as the first substrate 10 described above.

[0062] For example, the second substrate 50 may comprise 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), polyethyl naphthaleneate (PEN), polyethersulfone (PES), cyclic olefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS). These are merely examples and are not necessarily limited to this.

[0063] In addition, the second substrate 50 can be a flexible substrate with flexible properties.

[0064] Furthermore, the second substrate 50 can be a curved or bent substrate. That is, the optical path control member including the second substrate 50 can also be formed to have flexible, curved, or bent characteristics. For this reason, the optical path control member according to the embodiment can be changed to various designs.

[0065] The second substrate 50 may have a thickness of about 1 mm or less.

[0066] The second electrodes 40 and 40' can be disposed on one surface of the second substrate 50. More specifically, the second electrodes 40 and 40' can be disposed on the lower surface of the second substrate 50. That is, the second electrodes 40 and 40' can be disposed on the surface of the second substrate 50 facing the first substrate 10. Specifically, the second electrodes 40 and 40' can be disposed facing the first electrode 20 on the first substrate 10. Therefore, the second electrodes 40 and 40' can be disposed between the first electrode 20 and the second substrate 50.

[0067] Second electrodes 40 and 40' can be disposed on the lower surface of the second substrate 50. Multiple second electrodes 40 and 40' can be disposed. The second electrodes 40 and 40' may include a second-1 electrode 40 extending along a first direction DR1 and a second-2 electrode 40' extending along a second direction DR2. Multiple second electrodes 40 and 40' can be disposed. Multiple second-1 electrodes 40 can be spaced apart along the second direction DR2, and multiple second-2 electrodes 40' can be spaced apart along the first direction DR1. The second-1 electrodes 40 and second-2 electrodes 40' can intersect at a cross region CP. Multiple cross regions CP can be provided.

[0068] The second electrodes 40 and 40' may include light-absorbing materials. A predetermined voltage may be applied to the second electrodes 40 and 40' in a first mode and a second mode, respectively, to form an electric field in the optical path changing units 32 and 32', described later. The second electrodes 40 and 40' may contain conductive materials to form the electric field by applying predetermined voltages in the first mode and the second mode, respectively. The conductive materials of the second electrodes 40 and 40' may contain metals or conductive oxides. Examples of metals include, but are not limited to, chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), gold (Au), titanium (Ti), and alloys thereof. Examples of conductive oxides include, but are not limited to, transparent conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), and indium gallium zinc oxide (IGZO).

[0069] As described above, the second electrodes 40 and 40' can be used as light-shielding units, similar to the third electrodes 60 and 60', by incorporating light-absorbing materials. That is, the second electrodes 40 and 40' can be opaque metals, or the light-absorbing material can be formed on the surface of a conductive material or conductive oxide. The second electrodes 40 and 40' can have a first thickness t1. The first thickness t1 can be about 30 μm to about 50 μm.

[0070] In some embodiments, the first thickness t1 of the second electrodes 40 and 40' may be less than the second thickness t2 of the third electrodes 60 and 60'.

[0071] The third electrodes 60 and 60' can be disposed on another surface of the second substrate 50. More specifically, the third electrodes 60 and 60' can be disposed on the upper surface of the second substrate 50. That is, the third electrodes 60 and 60' can be disposed on the surface of the second substrate 50 opposite to the surface of the first substrate 10. Therefore, the third electrodes 60 and 60' can be spaced apart from the second electrodes 40 and 40' by the second substrate 50 between the third electrodes 60 and 60' and the second electrodes 40 and 40'.

[0072] Multiple third electrodes 60 and 60' can be provided. Third electrodes 60 and 60' may include a third-1 electrode 60 extending along a first direction DR1 and a third-2 electrode 60' extending along a second direction DR2. Each of the third electrodes 60 and 60' can be provided in multiples. Multiple third-1 electrodes 60 can be spaced apart from each other in the second direction DR2, and multiple third-2 electrodes 60' can be spaced apart from each other in the first direction DR1. Each of the third electrodes 60 and 60' can overlap with corresponding second electrodes 40 and 40' and optical path changing units 32 and 32' in the thickness direction. Third-1 electrodes 60 and third-2 electrodes 60' can intersect at a crossover region CP. Multiple crossover regions CP can be provided.

[0073] The third electrodes 60 and 60' extend along the first direction DR1, and the plurality of third electrodes 60 and 60' may be spaced apart from each other along the second direction DR2. The plurality of third electrodes 60 and 60' may overlap with the second electrodes 40 and 40' below the third electrodes 60 and 60' respectively in the thickness direction.

[0074] The third electrodes 60 and 60' may contain light-absorbing material. The third electrodes 60 and 60' may be used to narrow the side viewing angle in the second mode described later. The third electrodes 60 and 60' are similar to the second electrodes 40 and 40' in that the second electrodes 40 and 40' contain light-absorbing material, and the second electrode 40 contains light-absorbing material, but unlike the second electrodes 40 and 40', the third electrodes 60 and 60' may not contain conductive material.

[0075] The third electrodes 60 and 60' may have a second thickness t2. The second thickness t2 may be about 30 μm to about 50 μm. The second thickness t2 may be the same as the first thickness t1.

[0076] Similar to some of the embodiments described above, the first thickness t1 can be less than the second thickness t2. That is, when the optical path control member 1 widens the side viewing angle in the first mode, the light-absorbing particles 32b of the optical path changing units 32 and 32' are positioned adjacent to the second electrodes 40 and 40', allowing the light-absorbing particles 32b and the second electrodes 40 and 40' to absorb side light and prevent the widening of the side viewing angle. To prevent this, the thickness t1 of the second electrodes 40 and 40' is formed to be less than the thickness t2 of the third electrodes 60 and 60', so that in the first mode, the light-absorbing particles 32b and the second electrodes 40 and 40' can be prevented from absorbing side light, thereby preventing the widening of the side viewing angle in advance.

[0077] The light conversion units 31, 32, and 32' can be disposed between the first substrate 10 and the second substrate 50. More specifically, the light conversion units 31, 32, and 32' can be disposed between the first electrode 20 and the second electrodes 40 and 40'.

[0078] The light conversion units 31, 32, and 32' may include a light transmission section 31 and light path changing sections 32 and 32' surrounding the light transmission section 31. The position of the light absorbing particle 32b in the light path changing sections 32 and 32' can be changed according to the application of voltage. The light path changing sections 32 and 32' may be disposed between adjacent light transmission sections 31. The light path changing sections 32 and 32' may overlap with the second electrodes 40 and 40'. Multiple light path changing sections 32 and 32' may be provided. Each of the multiple light path changing sections 32 and 32' may extend along a first direction DR1 and be spaced apart from each other in a second direction DR2. Each of the multiple light path changing sections 32 and 32' may overlap with the second electrode 40. The sum of the thickness of the light path changing sections 32 and 32' and the thickness t1 of the second electrodes 40 and 40' may be equal to the thickness of the light transmission section 31.

[0079] For example, the cross-sectional shape of the optical path changing parts 32 and 32' can be trapezoidal. That is, in the optical path changing parts 32 and 32', the width of the upper surface can be smaller than the width of the lower surface.

[0080] The light transmission section 31 may include an opening. The cross-sectional shape of the opening may be the same as that of the light path changing sections 32 and 32'. The cross-sectional shape of the opening is not limited to this, and may be an inverted trapezoidal shape, a rectangular shape, a square shape, or other polygonal shapes.

[0081] The opening can be formed from the surface of the light-transmitting part 31.

[0082] The side surfaces of the light path changing sections 32 and 32' can directly contact the adjacent light transmission section 31. The upper surfaces of the light path changing sections 32 and 32' can contact the second electrodes 40 and 40', and the lower surfaces of the light path changing sections 32 and 32' can contact the first electrode 20. The lower surface of the light transmission section 31 can contact the first electrode 20, and the upper surface of the light transmission section 31 can contact the second substrate 50. The light transmission section 31 can contact the side surfaces of the second electrodes 40 and 40'.

[0083] Multiple optical path changing sections 32 and 32' may exist. The optical path changing sections 32 and 32' may include a first optical path changing section 32 extending along a first direction DR1 and a second optical path changing section 32' extending along a second direction DR2. Each of the first optical path changing section 32 and the second optical path changing section 32' may be provided in multiples. The multiple first optical path changing sections 32 may be spaced apart from each other in the second direction DR2, and the multiple second optical path changing sections 32' may be spaced apart from each other in the first direction DR1.

[0084] The optical path changing sections 32 and 32' may include a dispersion solution 32a and light-absorbing particles 32b. More specifically, the optical path changing sections 32 and 32' are filled with a dispersion solution 32a, and a plurality of light-absorbing particles 32b may be dispersed in the dispersion solution 32a.

[0085] Dispersion solution 32a may be a material that disperses light-absorbing particles 32b. Dispersion solution 32a may contain a transparent material. Dispersion solution 32a may contain a nonpolar solvent. Furthermore, dispersion solution 32a may contain a material capable of transmitting light. For example, dispersion solution 32a may contain at least one of a halogenated hydrocarbon-based oil, a paraffin-based oil, and isopropanol.

[0086] The light-absorbing particles 32b can be dispersed and disposed in the dispersion solution 32a. More specifically, multiple light-absorbing particles 32b can be spaced apart from each other and disposed in the dispersion solution 32a.

[0087] The light-absorbing particles 32b may comprise a material capable of absorbing light. The light-absorbing particles may be colored. More specifically, the light-absorbing particles 32b may comprise black particles capable of absorbing light. For example, the light-absorbing particles may comprise carbon black particles.

[0088] The light-transmitting part 31 can transmit light supplied from the lower part to the upper part. The light-transmitting part 31 may contain a transparent material. The light-transmitting part 31 may contain a material capable of transmitting light.

[0089] The light transmission section 31 can transmit light incident on one of the first substrate 10 and the second substrate 50 toward the other substrate.

[0090] In the following text, Figure 3 and Figure 4 The mode shown with a wide side view will be referred to as the first mode (or shared mode), and Figure 5 The mode shown with a limited side viewpoint will be referred to as the second mode (or privacy mode). The third mode may have the same optical path variation sections 32 and 32' as the second mode.

[0091] The switching from the first mode to the second mode can be achieved by moving the light-absorbing particles 32b of the optical path changing sections 32 and 32'. That is, the light-absorbing particles 32b have a charge on their surface and can move in the direction of the first or second electrode according to the charge characteristics under applied voltage. In other words, the light-absorbing particles 32b can be electrophoretic particles.

[0092] like Figure 3 and Figure 4 As shown, in the first mode, the light-absorbing particle 32b can be positioned adjacent to the second electrodes 40 and 40'. Therefore, in the first mode, a (+) voltage can be applied to the second electrodes 40 and 40', and a (-) voltage can be applied to the first electrode 20. The surface of the light-absorbing particle 32b carries a (-) charge, and in the first mode, it exerts a repulsive force on the first electrode 20 and an attractive force on the second electrodes 40 and 40', allowing the light-absorbing particle 32b to be positioned adjacent to the second electrodes 40 and 40'.

[0093] like Figure 5 As shown, in the second mode, the light-absorbing particle 32b can be positioned adjacent to the first electrode 20. For this purpose, in the second mode, a negative voltage can be applied to the second electrodes 40 and 40', and a positive voltage can be applied to the first electrode 20. The surface of the light-absorbing particle 32b carries a negative charge, and in the second mode, it exerts an attractive force on the first electrode 20 and a repulsive force on the second electrodes 40 and 40', allowing the light-absorbing particle to be positioned adjacent to the first electrode 20.

[0094] In the specification, the statement that the light-absorbing particles 32b are arranged adjacent to electrodes 20 and 40 in each mode means that, based on the thickness of the optical path changing portions 32 and 32', approximately 80% or more of the light-absorbing particles 32b are placed in an area of ​​30% or less of the separation distance between the first electrode 20 and the second electrodes 40 and 40'. For example, in the first mode, approximately 80% or more of the light-absorbing particles 32b are arranged in the region from the second electrodes 40 and 40' to a first distance in the thickness direction, and the first distance may be 30% or less of the thickness of the optical path changing portions 32 and 32' (or the separation distance between the first electrode 20 and the second electrodes 40 and 40'). In the second mode, approximately 80% or more of the light-absorbing particles 32b are arranged in the region from the first electrode 20 to a second distance in the thickness direction, and the second distance may be 30% or less of the thickness of the optical path changing portions 32 and 32' (or the separation distance between the first electrode 20 and the second electrodes 40 and 40').

[0095] Meanwhile, the optical path changing units 32 and 32' according to the embodiment can maintain the second mode in the third mode (i.e., the mode in which no voltage is applied to each electrode 20 and 40). That is, in the third mode, the light-absorbing particle 32b can be arranged adjacent to the first electrode 20. In order to maintain the second mode in the third mode, the optical path changing units 32 and 32' may also include an additive that forms an electro-attraction with the (-) charged light-absorbing particle 32b.

[0096] The optical path control function of the optical path control component in each mode will be described below.

[0097] Figure 6 This is a schematic diagram showing the optical path in the first mode. Figure 7 This is a schematic diagram showing the optical paths in the second and third modes. Figure 8 It is a graph showing the incident angle of light (S-polarized light) incident from the light transmission section to the light path change section, and the reflectivity of light caused by the difference in refractive index between the light transmission section and the light path change section. Figure 9 It is a graph showing the incident angle of light (P-polarized light) incident from the light transmission section to the light path change section, and the reflectivity of light caused by the difference in refractive index between the light transmission section and the light path change section. Figure 10a and Figure 10b These are views showing the frontal transmittance in the second and first modes, respectively.

[0098] like Figure 6As shown, in the first mode, light L1 incident on the light transmission section 31 through the first substrate 10 and the first electrode 20 is emitted to the upper part of the second substrate 50 as is. Light L2 incident from the light transmission section 31 onto the side surfaces of the light path changing sections 32 and 32' is totally reflected at the interface between the light path changing sections 32 and 32' and the light transmission section 31, and is emitted to the upper part of the second substrate 50. Light L3 incident from the side surfaces of the light path changing sections 32 and 32' onto the light transmission section 31 is refracted to the side surfaces at the interface between the light path changing sections 32 and 32' and the light transmission section 31, and can travel in the lateral direction.

[0099] In order for light L2 incident from the light transmission section 31 onto the side surfaces of the light path changing sections 32 and 32' to be totally internally reflected at the interface between the light path changing sections 32 and 32' and the light transmission section 31, and for light L3 incident from the side surfaces of the light path changing sections 32 and 32' onto the light transmission section 31 to be refracted at the interface between the light path changing sections 32 and 32' and the light transmission section 31 to travel in the lateral direction, it is necessary to adjust the refractive index of the light path changing sections 32 and 32' and the light transmission section 31. In particular, since the light absorbing particles 32b in the light path changing sections 32 and 32' are light-absorbing materials, they can be a dispersion solution 32a whose refractive index needs to be adjusted.

[0100] In order for light L2 incident from the light transmission section 31 onto the side surfaces of the light path changing sections 32 and 32' to be totally internally reflected at the interface between the light path changing sections 32 and 32' and the light transmission section 31, and for light L3 incident from the side surfaces of the light path changing sections 32 and 32' onto the light transmission section 31 to be refracted at the interface between the light path changing section 32 and the light transmission section 31 to travel in the lateral direction, the refractive index of the light transmission section 31 should be greater than the refractive index of the dispersion solution 32a. For example, the refractive index of the light transmission section 31 may be approximately 0.08 greater than the refractive index of the dispersion solution 32a. In some embodiments, the refractive index of the light transmission section 31 may be approximately 1.0 or greater than the refractive index of the dispersion solution 32a.

[0101] Figure 8 and Table 1 and Figure 9 Table 2 shows the incident angle of light (S-polarized light) incident from the light transmission section 31 to the light path change sections 32 and 32', as well as the reflectivity of light caused by the difference in refractive index between the light transmission section 31 and the light path change sections 32 and 32'.

[0102] Table 1

[0103] Θi Δn 0.10 Δn 0.07 Δn 0.035 72 Total internal reflection 42.08％ 2.85％ 71 Total internal reflection 20.74％ 2.14％ 70 Total internal reflection 13.01％ 1.65％ 69 60.70％ 8.99％ 1.30％ 68 27.19％ 6.57％ 1.04％ 67 17.14％ 4.99％ 0.85％ 66 12.00％ 3.90％ 0.70％ 65 8.90％ 3.12％ 0.59％

[0104] Table 2

[0105]

[0106]

[0107] First, refer to Figure 8 According to Table 1, when the deviation (or difference) between the refractive index of the light transmission section 31 and the refractive index of the dispersion solution 32a is 0.1 or greater, it can be confirmed that total internal reflection occurs at the interface between the light transmission section 31 and the dispersion solution 32a, compared to the case of a deviation of 0.07 or 0.035.

[0108] Similarly, refer to Figure 9 According to Table 2, when the deviation (or difference) between the refractive index of the light transmission section 31 and the refractive index of the dispersion solution 32a is 0.1 or greater, it can be confirmed that total internal reflection occurs at the interface between the light transmission section 31 and the dispersion solution 32a, compared to the case of a deviation of 0.07 or 0.035.

[0109] According to one embodiment, in the case of the optical path control member 1, the deviation (or difference) between the refractive index of the light transmission section 31 and the refractive index of the dispersion solution 32a is 0.1 or greater, such that light L2 incident from the light transmission section 31 onto the side surfaces of the optical path changing sections 32 and 32' is totally internally reflected at the interface between the optical path changing sections 32 and 32' and the light transmission section 31, and light L3 incident from the side surfaces of the optical path changing sections 32 and 32' onto the light transmission section 31 is refracted to the side surface at the interface between the optical path changing sections 32 and 32' and the light transmission section 31 and travels in the lateral direction, thereby maximizing the front light emission efficiency in the first mode.

[0110] like Figure 7 As shown, in the second mode (or third mode), light L1 incident on the light transmission section 31 through the first substrate 10 and the first electrode 20 can be emitted to the upper part of the second substrate 50 as is. Light L2 incident on the side surfaces of the light path changing sections 32 and 32' from the light transmission section 31 can be totally reflected at the interface between the light path changing sections 32 and 32' and the light transmission section 31. Light L4 incident on the third electrodes 60 and 60' from the light transmission section 31 can be absorbed by the third electrodes 60 and 60'. Light L5 incident on the lower part of the light path changing sections 32 and 32' can be absorbed by the light-absorbing particles 32b adjacent to the first electrode 20. Light L6 incident on the second electrodes 40 and 40' can be absorbed by the second electrodes 40 and 40'.

[0111] Even if the deviation (or difference) between the refractive index of the light transmission section 31 and the refractive index of the dispersion solution 32a is 0.1 or greater in the second mode (or third mode), the light L2 incident from the light transmission section 31 onto the side surfaces of the light path changing sections 32 and 32' is totally reflected at the interface between the light path changing sections 32 and 32' and the light transmission section 31, thereby maximizing the front luminous efficiency.

[0112] Figure 10a and Figure 10b The front luminous efficiency in the second (or third) mode and the front luminous efficiency in the first mode are shown respectively.

[0113] Reference Figure 10a and Figure 10b The front luminous efficiency in the second (or third) mode and the front luminous efficiency in the first mode can be 70% or higher, respectively. The reason why the front luminous efficiency in the second (or third) mode and the front luminous efficiency in the first mode are 70% or higher is that, as described above, in the first or second (or third) mode, the deviation (or difference) between the refractive index of the light transmission section 31 and the refractive index of the dispersion solution 32a is 0.1 or greater, so that the light incident from the light transmission section 31 onto the side surfaces of the light path changing sections 32 and 32' is totally reflected at the interface between the light path changing sections 32 and 32' and the light transmission section 31, thereby maximizing the front luminous efficiency.

[0114] Meanwhile, as described above, the second electrodes 40 and 40' may have a first thickness t1. The first thickness t1 may be about 30 μm to about 50 μm.

[0115] In some embodiments, the first thickness t1 of the second electrodes 40 and 40' may be less than the second thickness t2 of the third electrodes 60 and 60'.

[0116] Figure 11 This is a perspective view of a display device according to an embodiment. Figure 12 yes Figure 11 Cross-sectional view.

[0117] Reference Figure 11 and Figure 12 The display device 100 according to the embodiment may include a display panel 200 disposed on the lower part of the optical path control member 1, a first coupling member 300 between the display panel 200 and the optical path control member 1, a polarizing film 400 between the first coupling member 300 and the optical path control member 1, and a second coupling member 500 between the polarizing film 400 and the optical path control member 1.

[0118] The display panel 200 and the polarizing film 400 can be coupled through the first coupling member 300, and the polarizing film 400 and the optical path control member 1 can be coupled through the second coupling member 500.

[0119] The first coupling member 300 may include, but is not limited to, light-transmitting adhesive (OCA), light-transmitting resin (OCR), etc.

[0120] The second coupling member 500 may include, but is not limited to, light-transmitting adhesive (OCA), light-transmitting resin (OCR), etc.

[0121] The display panel 200 may include a plurality of pixels disposed in a display area on a substrate, and driving units disposed in a non-display area surrounding the display area for driving the pixels. Each pixel may include a transistor (TFT) connected to the driving unit via control signal lines and a light-emitting element (OLED) connected to the transistor. The transistor is turned on or off according to a control signal applied via the control signal lines to adjust the amount of current applied to the light-emitting element. The light-emitting element may emit light with a brightness corresponding to the amount of current applied via the transistor. The display panel 200 may also include a protective layer (Encap) encapsulating the light-emitting element (OLED) and an upper protective substrate (Pol). In some embodiments, the display panel 200 may be a liquid crystal display panel.

[0122] Other embodiments of the optical path control component 1 will be described below.

[0123] Figure 13 This is a cross-sectional view of the optical path control component according to another embodiment in the first mode. Figure 14 yes Figure 13 A cross-sectional view of the optical path control component in the second mode. Figure 15 yes Figure 13 A cross-sectional view of the optical path control component in the third mode.

[0124] Reference Figures 13 to 15 According to this embodiment, the optical path changing section 32_1 of the optical path control component 2, and the optical path conversion unit 30_1 and the optical path changing section 32_1 Figures 1 to 5 The optical path control component 1 differs from the one mentioned above because it does not include the additives included in the optical path changing parts 32 and 32', in order to maintain the second mode in the third mode, as referenced above. Figure 5 As described. In Figures 13 to 15 Only the first optical path changing section 32_1 is shown in the figure, but like the first optical path changing section 32_1, the second optical path changing section may not include additives.

[0125] More specifically, since the optical path changing section 32_1 does not include additives, therefore... Figure 13 As shown, the light-absorbing particles 32b_1 can be dispersed and disposed in the dispersion solution 32a in a third mode where no voltage is applied to electrodes 20 and 40. That is, in the optical path control member 2 according to this embodiment, the light-absorbing particles 32b_1 are in a second mode (see...) Figure 14 ) and the third mode (see Figure 15The behaviors in each of these modes can differ from one another. Even in the third mode, since the light-absorbing particles 32b_1 are dispersed and disposed in the dispersion solution 32a, they can be used to limit the side viewing angle.

[0126] The above has been referred to Figures 1 to 5 Other descriptions have been provided, so their detailed descriptions will be omitted.

[0127] Figure 16 This is a cross-sectional view of the optical path control component according to yet another embodiment.

[0128] Reference Figure 16 According to this embodiment, the optical path control component 3 and Figure 3 The difference in the optical path control component 1 is that the first electrode 20_1 is not formed as a surface electrode, but is configured as multiple electrodes.

[0129] More specifically, according to this embodiment, a plurality of first electrodes 20_1 may be provided, and the plurality of first electrodes 20_1 may be spaced apart from each other and disposed along the second direction DR2. Each of the plurality of first electrodes 20_1 may overlap with the second electrodes 40 and 40' in the thickness direction.

[0130] The above has been referred to Figures 1 to 5 Other descriptions have been provided, so their detailed descriptions will be omitted.

[0131] Figure 17 This is a cross-sectional view of the optical path control component according to yet another embodiment.

[0132] Reference Figure 17 According to this embodiment, the optical path control component 4 and Figure 13 The difference in the optical path control component 3 is that the second electrode 40_1 is set in the form of a surface electrode.

[0133] More specifically, the second electrode 40_1 according to this embodiment may comprise a transparent conductive material. For example, the second electrode 40_1 may comprise a metal oxide, such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, and titanium oxide.

[0134] The second electrode 40_1 can be disposed on the second substrate 50 in the shape of a film. Furthermore, the transmittance of the second electrode 40_1 can be approximately 80% or higher. More specifically, the second electrode 40_1 can be disposed on the entire surface of one surface of the second substrate 50. That is, the second electrode 40_1 can be configured as a surface electrode on the second substrate 50.

[0135] Reference above Figure 16 Other descriptions have been provided, so their detailed descriptions will be omitted.

[0136] Figure 18 This is a cross-sectional view of the optical path control component according to yet another embodiment.

[0137] Reference Figure 18 According to this embodiment, the optical path control component 5 and Figure 17 The difference in optical path control component 4 is that the first electrode 20 is configured as follows: Figure 3 Surface electrodes in.

[0138] Reference above Figure 17 Other descriptions have been provided, so their detailed descriptions will be omitted.

[0139] Figure 19 This is a plan view of the second and third electrodes according to another embodiment.

[0140] Reference Figure 19 According to this embodiment, the second electrodes 40_2 and 40'_1 are related to the... Figure 1 The difference between the second electrodes 40 and 40' is that the second electrodes 40_2 and 40'_1 extend along the first direction DR1 and the second direction DR2, respectively, and have a Z-shaped planar shape. Similarly, the third electrodes 60_1 and 60'_1 according to this embodiment are different from those according to... Figure 1 The difference between the third electrodes 60 and 60' is that the third electrodes 60_1 and 60'_1 extend along the first direction DR1 and the second direction DR2 respectively, and have a Z-shaped planar shape.

[0141] According to this embodiment, the second electrodes 40_2 and 40'_1 and the third electrodes 60_1 and 60'_1 each have a Z-shaped planar shape, which minimizes optical interference with the pixels of the display panel 200 and reduces moiré defects. For example, the angles between the second-1 electrode 40_2 and the third-1 electrode 60_1 and the first direction DR1 can be approximately 7 degrees to approximately 15 degrees, and the angles between the second-2 electrode 40'_1 and the third-2 electrode 60'_1 and the second direction DR2 can be approximately 7 degrees to approximately 15 degrees, respectively.

[0142] Reference above Figures 1 to 5 Other descriptions have been provided, so their detailed descriptions will be omitted.

[0143] Figure 20 This is a plan view of the second and third electrodes according to yet another embodiment.

[0144] Reference Figure 20 This implementation method is the same as Figure 19 The difference in the implementation is that the second-1 electrode 40_3 and the third-1 electrode 60_2 generally extend along the first direction DR1 and may include multiple separate patterns.

[0145] More specifically, such as Figure 20 As shown, the second-1 electrode 40_3 may include multiple first patterns.

[0146] A first pattern (hereinafter referred to as the first-1 pattern) extends along the direction between one side of the first direction DR1 and the other side of the second direction DR2, and can be connected to one end of the second-2 electrode 40_3 in the first direction DR1 on one side of the first direction DR1. The first-1 patterns can be spaced apart from each other along the second direction DR2.

[0147] Another first pattern (hereinafter referred to as the first-2 pattern) extends along the direction between one side of the second direction DR2 and the other side of the first direction DR1, and can be connected to the other end of the second-2 electrode 40_3 in the first direction DR1 on one side of the first direction DR1. The first-2 patterns can be spaced apart from each other along the second direction DR2. In the plane, the first-1 pattern and the first-2 pattern can be alternately arranged along the second direction DR2.

[0148] The first-2 pattern can be connected to the second-2 electrode 40_3 on one side of the first direction DR1, and also connected to one end of the second-2 electrode 40_3 adjacent to the other side of the first direction DR1 on one side of the first direction DR1. The first-1 pattern can be connected to the second-2 electrode 40_3 on one side of the first direction DR1, and also connected to the other end of the second-2 electrode 40_3 adjacent to the other side of the first direction DR1 on the other side of the first direction DR1. The structures of the second-2 electrode 40_3 and the second-1 electrode 40_3 described above can be repeated along the first direction DR1.

[0149] Since the third-1 electrode 60_2 and the third-2 electrode 60'_1 have the same shape as the second-1 electrode 40_3 and the second-2 electrode 40'_1, respectively, a detailed description will be omitted.

[0150] Reference above Figures 1 to 5 and Figure 19 Other descriptions have been provided, so their detailed descriptions will be omitted.

[0151] Figure 21 This is a plan view of the second and fourth electrodes according to yet another embodiment. Figure 22 This is a perspective view of the optical path control component according to yet another embodiment. Figure 23 It is along Figure 21 The cross-sectional view taken from line C-C' in the diagram. Figure 24 It is shown Figure 23 Cross-sectional views of the second and third modes of the optical path control component.

[0152] Reference Figures 21 to 24 According to this embodiment, the optical path control component 8 may include second optical conversion units 71, 72 and 72' on the third electrode 60a, a fourth electrode 80 on the optical conversion units 71, 72 and 72', and a third substrate 90 on the fourth electrode 80.

[0153] The third substrate 90 may comprise glass, plastic, or a flexible polymer film. For example, the flexible polymer film may be made of any of polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethyl naphthalene oxide (PEN), polyethersulfone (PES), cyclic olefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS), these are merely examples and are not necessarily limited thereto.

[0154] and Figure 2 The third electrode 60 and 60' are different; the third electrode 60a can be a planar electrode. The third electrode 60a can contain a transparent conductive material. For example, the third electrode 60a can contain a metal oxide, such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, or titanium oxide.

[0155] The transmittance of the third electrode 60a can be about 80% or higher. More specifically, the third electrode 60a can be disposed on the entire surface of the upper surface of the second substrate 50.

[0156] The third electrode 60a may have a thickness of about 10 nm to about 50 nm.

[0157] The fourth electrodes 80 and 80' can be disposed on the lower surface of the third substrate 90. That is, the fourth electrodes 80 and 80' can be disposed on the surface of the third substrate 90 facing the second substrate 50.

[0158] Fourth electrodes 80 and 80' may be disposed on the lower surface of the third substrate 90. Multiple fourth electrodes 80 and 80' may be disposed. Fourth electrodes 80 and 80' may include a fourth-1 electrode 80 extending along a first direction DR1 and a fourth-2 electrode 80' extending along a second direction DR2. Multiple fourth electrodes 80 and 80' may be disposed. Multiple fourth-1 electrodes 80 may be spaced apart from each other in the second direction DR2, and multiple fourth-2 electrodes 80' may be spaced apart from each other in the first direction DR1. Fourth-1 electrodes 80 and fourth-2 electrodes 80' may intersect at a cross region CP. Multiple cross regions CP may be disposed.

[0159] A predetermined voltage can be applied to the fourth electrodes 80 and 80' in both the first and second modes to form an electric field in the second optical path changing sections 72 and 72', which will be described later. The fourth electrodes 80 and 80' may contain a conductive material to form the electric field by applying the predetermined voltage in both the first and second modes. The conductive material of the fourth electrodes 80 and 80' may contain a conductive oxide. Examples of conductive oxides may include, but are not limited to, transparent conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), and indium gallium zinc oxide.

[0160] The second light conversion units 71, 72, and 72' can be disposed between the third electrode 60a and the third substrate 90. More specifically, the second light conversion units 71, 72, and 72' can be disposed between the third electrode 60a and the fourth electrodes 80 and 80'.

[0161] The second optical conversion units 71, 72, and 72' may include a light transmission section 71 and light path changing sections 72 and 72' surrounding the light transmission section 72. The material and structure of the light transmission section 71 may be the same as those of the light transmission section 31, and the material and structure of the light path changing sections 72 and 72' may be the same as those of the light path changing sections 32 and 32'. The light path changing sections 72 and 72' may be disposed between adjacent light transmission sections 71. The light path changing sections 72 and 72' may overlap with the fourth electrodes 80 and 80'. Multiple light path changing sections 72 and 72' may be provided. Each of the multiple light path changing sections 72 and 72' may extend along a first direction DR1 and be spaced apart from each other in a second direction DR2. Each of the multiple light path changing sections 72 and 72' may overlap with the fourth electrodes 80 and 80'. The sum of the thicknesses of the light path changing sections 72 and 72' and the thicknesses of the fourth electrodes 80 and 80' may be equal to the thickness of the light transmission section 71.

[0162] For example, the cross-sectional shape of the optical path changing parts 72 and 72' can be rectangular.

[0163] The light transmission section 71 may include an opening. The cross-sectional shape of the opening may be the same as that of the light path changing sections 72 and 72'. The cross-sectional shape of the opening is not limited to this, and may be an inverted trapezoidal shape, a trapezoidal shape, a square shape, or other polygonal shapes.

[0164] The opening can be formed from the surface of the light-transmitting part 71.

[0165] The side surfaces of the light path changing sections 72 and 72' can directly contact the adjacent light transmission section 71. The upper surfaces of the light path changing sections 72 and 72' can contact the fourth electrodes 80 and 80', and the lower surfaces of the light path changing sections 72 and 72' can contact the third electrode 60a. The lower surface of the light transmission section 71 can contact the third electrode 60a, and the upper surface of the light transmission section 71 can contact the first substrate 90. The light transmission section 71 can contact the side surfaces of the fourth electrodes 80 and 80'.

[0166] Multiple optical path changing sections 72 and 72' may exist. The optical path changing sections 72 and 72' may include a first optical path changing section 72 extending along a first direction DR1 and a second optical path changing section 72' extending along a second direction DR2. Each of the first optical path changing section 72 and the second optical path changing section 72' may be provided in multiples. The multiple first optical path changing sections 72 may be spaced apart from each other in the second direction DR2, and the multiple second optical path changing sections 72' may be spaced apart from each other in the first direction DR1.

[0167] When switching from the first mode to the second mode, the light-absorbing particles of the optical path changing sections 72 and 72' can move. That is, the light-absorbing particles have an electric charge on their surface and can move toward the third or fourth electrode due to the characteristics of the charge, depending on the application of voltage.

[0168] like Figure 23 As shown, in the first mode, the light-absorbing particles of the optical path changing sections 72 and 72' can be positioned adjacent to the fourth electrodes 80 and 80'. Therefore, in the first mode, a (+) voltage can be applied to the fourth electrodes 80 and 80', and a (-) voltage can be applied to the third electrode 60a. The surfaces of the light-absorbing particles of the optical path changing sections 72 and 72' carry a negative (-) charge, thus creating a repulsive force on the third electrode 60a and an attractive force on the fourth electrodes 80 and 80' in the first mode. Therefore, the light-absorbing particles of the optical path changing sections 72 and 72' can be positioned adjacent to the fourth electrodes 80 and 80'.

[0169] like Figure 24 As shown, in the second mode, the light-absorbing particles of the optical path changing sections 72 and 72' can be positioned adjacent to the third electrode 60a. Therefore, in the second mode, a negative voltage can be applied to the fourth electrodes 80 and 80', and a positive voltage can be applied to the third electrode 60a. The surfaces of the light-absorbing particles of the optical path changing sections 72 and 72' carry a negative charge, causing them to attract the third electrode 60a and repel the fourth electrodes 80 and 80' in the second mode, thus allowing the optical path changing sections 72 and 72' to be positioned adjacent to the third electrode 60a.

[0170] Figure 25This is a plan view of the second and fourth electrodes according to yet another embodiment.

[0171] Reference Figure 25 According to this embodiment, the optical path control component 9 and the optical path control component 9 according to this embodiment Figure 21 The difference in the optical path control component 8 is that the fourth electrode 80_1 extends along the direction between the first direction DR1 and the second direction DR2 (hereinafter, the first tilting direction). Multiple fourth electrodes 80_1 can be provided, and each of the multiple fourth electrodes 80_1 can be spaced apart from each other in a second tilting direction perpendicular to the first tilting direction.

[0172] like Figure 25 As shown, each of the plurality of fourth electrodes 80_1 can extend in the first inclined direction and overlap with the intersection region CP. Therefore, in the first mode, when the light-absorbing particles of the optical path changing parts 72 and 72' are arranged adjacent to the fourth electrodes 80_1, especially when the light-absorbing particles of the optical path changing parts 72 and 72' are arranged adjacent to the region overlapping with the intersection region CP of the fourth electrodes 80_1, it has the advantage of improving the transmittance of the optical path control member 9.

[0173] Reference above Figures 22 to 24 Other descriptions have been provided, so their detailed descriptions will be omitted.

[0174] Based on the above description, the embodiments of this disclosure provide the following technical solutions.

[0175] Solution 1. An optical path control component, comprising:

[0176] First substrate;

[0177] A first electrode is disposed on the first substrate;

[0178] A first optical conversion unit is disposed on the first electrode;

[0179] A second substrate is disposed on the first light conversion unit;

[0180] The second electrode includes a second-1 electrode disposed between the second substrate and the first light conversion unit and extending along a first direction, and a second-2 electrode extending along a second direction intersecting the first direction; and

[0181] The third electrode is disposed on the upper surface of the second substrate.

[0182] Option 2. According to the optical path control component of Option 1, wherein the first optical conversion unit includes an optical transmission section and an optical path changing section surrounding the optical transmission section.

[0183] Solution 3. The optical path control component according to Solution 2, wherein the optical path changing part changes the path of the provided light according to the voltage applied.

[0184] Option 4. The optical path control component according to Option 2, wherein the optical path changing part includes a dispersion solution and light-absorbing particles in the dispersion solution.

[0185] Option 5. The optical path control component according to Option 4, wherein the optical path changing part includes a first optical path changing part extending along the first direction and a second optical path changing part extending along the second direction.

[0186] Solution 6. The optical path control component according to Solution 5, wherein the first optical path changing part overlaps with the second-1 electrode, and the second optical path changing part overlaps with the second-2 electrode.

[0187] Solution 7. The optical path control component according to Solution 6, wherein the third electrode includes a third-1 electrode extending along the first direction and a third-2 electrode extending along the second direction, and the third-1 electrode overlaps with the first optical path changing part, while the third-2 electrode overlaps with the second optical path changing part.

[0188] Option 8. The optical path control component according to Option 7, wherein each of the second-1 electrode and the second-2 electrode extends in a Z-shape.

[0189] Solution 9. The optical path control component according to Solution 7, wherein the second-2 electrodes are arranged in a plurality of manner, and the plurality of second-2 electrodes are connected to one end of the second-1 electrode on one side in the second direction and one end of the second-1 electrode on the other side in the second direction, and the second-2 electrodes connected to one end of the second-1 electrode on one side in the second direction and the second-2 electrodes connected to one end of the second-1 electrode on the other side in the second direction are alternately arranged along the first direction.

[0190] Option 10. The optical path control component according to Option 4, wherein, in the first mode, the light-absorbing particles are arranged adjacent to the second electrode.

[0191] Solution 11. The optical path control component according to Solution 10, wherein, in the first mode, a positive voltage is applied to the second electrode and a negative voltage is applied to the first electrode.

[0192] Option 12. The optical path control component according to Option 10, wherein, in the second mode, the light-absorbing particles are arranged adjacent to the first electrode.

[0193] Solution 13. The optical path control component according to Solution 12, wherein, in the second mode, a negative voltage is applied to the second electrode and a positive voltage is applied to the first electrode.

[0194] Option 14. The optical path control component according to Option 12, wherein, in the third mode, the light-absorbing particle is arranged adjacent to the first electrode, and in the third mode, no voltage is applied to each of the first electrode and the second electrode.

[0195] Option 15. The optical path control component according to Option 12, wherein, in the third mode, the light-absorbing particles are dispersed in the dispersion solution.

[0196] Solution 16. The optical path control component according to Solution 2, wherein the optical path changing part is provided in multiple ways, and the optical transmission part is provided between adjacent optical path changing parts on a plane.

[0197] Option 17. The optical path control component according to Option 1, wherein the thickness of the third electrode is 30 μm to 50 μm.

[0198] Option 18. The optical path control component according to Option 1, wherein the thickness of the second electrode is less than the thickness of the third electrode.

[0199] Option 19. The optical path control component according to Option 1, wherein the third electrode is planar.

[0200] Option 20. The optical path control component according to Option 1 further includes:

[0201] The second light conversion unit on the third electrode;

[0202] The third substrate on the second optical conversion unit; and

[0203] The fourth electrode is located between the second light conversion unit and the third substrate.

[0204] Option 21. The optical path control component according to Option 20, wherein the fourth electrode comprises a transparent conductive material.

[0205] Option 22. The optical path control component according to Option 20, wherein the fourth electrode extends in a direction between the first direction and the second direction.

[0206] Scheme 23. The optical path control component according to Scheme 22, wherein there are multiple second-1 electrodes and second-2 electrodes, and the fourth electrode passes through the intersection region where the second-1 electrodes and second-2 electrodes intersect.

[0207] Option 24. The optical path control component according to Option 23, wherein, in the first mode, the light-absorbing particles of the optical path changing section are arranged to be adjacent to the region overlapping with the intersection region of the fourth electrode.

[0208] Option 25. A display device, comprising:

[0209] Display panel; and

[0210] The optical path control component on the display panel,

[0211] The optical path control component includes:

[0212] First substrate;

[0213] A first electrode is disposed on the first substrate;

[0214] A first optical conversion unit is disposed on the first electrode;

[0215] A second substrate is disposed on the first light conversion unit;

[0216] The second electrode includes a second-1 electrode disposed between the second substrate and the first light conversion unit and extending along a first direction, and a second-2 electrode extending along a second direction intersecting the first direction; and

[0217] The third electrode is disposed on the upper surface of the second substrate.

[0218] Option 26. The display device according to Option 25 further includes a polarizing film between the display panel and the optical path control member.

[0219] Solution 27. The display device according to Solution 25, wherein the first light conversion unit includes a light transmission section and a light path changing section surrounding the light transmission section, and the light path changing section changes the path of the supplied light according to the applied voltage.

[0220] Although embodiments of the present disclosure have been described above with reference to the accompanying drawings, it should be understood that the technical configuration of the present disclosure may be embodied in other specific forms by those skilled in the art without altering the technical spirit or essential characteristics of the present disclosure. Therefore, it should be understood that the above embodiments are illustrative in all respects and not restrictive.

[0221] Description of reference numerals in the attached figures

[0222] 1: Optical path control components

[0223] 10: First substrate

[0224] 20: First electrode

[0225] 40, 40': Second electrode

[0226] 50: Second substrate

[0227] 60, 60': Third electrode

Claims

1. An optical path control component, comprising: First substrate; A first electrode is disposed on the first substrate; A first optical conversion unit is disposed on the first electrode; A second substrate is disposed on the first light conversion unit; The second electrode includes a plurality of second-1 electrodes disposed between the second substrate and the first light conversion unit and extending along a first direction, and a plurality of second-2 electrodes extending along a second direction intersecting the first direction. as well as The third electrode is disposed on the upper surface of the second substrate. The plurality of second-1 electrodes are spaced apart from each other in the second direction, and the plurality of second-2 electrodes are spaced apart from each other in the first direction.

2. The optical path control component according to claim 1, wherein, The first optical conversion unit includes an optical transmission section and an optical path changing section surrounding the optical transmission section.

3. The optical path control component according to claim 2, wherein, The optical path changing unit alters the path of the supplied light based on the applied voltage.

4. The optical path control component according to claim 2, wherein, The optical path changing section includes a dispersion solution and light-absorbing particles in the dispersion solution.

5. The optical path control component according to claim 4, wherein, The optical path changing section includes a first optical path changing section extending along the first direction and a second optical path changing section extending along the second direction.

6. The optical path control component according to claim 5, wherein, The first optical path changing part overlaps with the second-1 electrode, and the second optical path changing part overlaps with the second-2 electrode.

7. The optical path control component according to claim 6, wherein, The third electrode includes a third-1 electrode extending along the first direction and a third-2 electrode extending along the second direction, wherein the third-1 electrode overlaps with the first optical path change section, and the third-2 electrode overlaps with the second optical path change section.

8. The optical path control component according to claim 7, wherein, Each of the second-1 electrode and the second-2 electrode extends in a zigzag shape.

9. A display device, comprising: Display panel; as well as The optical path control component on the display panel, The optical path control component includes: First substrate; A first electrode is disposed on the first substrate; A first optical conversion unit is disposed on the first electrode; A second substrate is disposed on the first light conversion unit; The second electrode includes a plurality of second-1 electrodes disposed between the second substrate and the first light conversion unit and extending along a first direction, and a plurality of second-2 electrodes extending along a second direction intersecting the first direction; and The third electrode is disposed on the upper surface of the second substrate. The plurality of second-1 electrodes are spaced apart from each other in the second direction, and the plurality of second-2 electrodes are spaced apart from each other in the first direction.

10. The display device according to claim 9, further comprising a polarizing film between the display panel and the optical path control member.

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