Lighting device and lamp including same

Abstract

The lighting device disclosed in the embodiments of the invention includes a reflective layer, a resin layer disposed on the reflective layer, a substrate disposed on the resin layer and including an electrode layer, a plurality of light-emitting elements disposed between the resin layer and the substrate, and a light-shielding layer disposed on the substrate, wherein the electrode layer includes a first pattern region disposed adjacent to the light-emitting elements, and a second pattern region disposed outside the first pattern region and having a pattern of a different size than the first pattern region, and the light-shielding layer includes a plurality of light-shielding pattern regions, and the light-shielding pattern region vertically overlaps with the first pattern region and has an area larger than the area of ​​the first pattern region.

Description

[Technical Field]

[0001] The embodiments relate to a lighting device and a lamp including the same. [Background technology]

[0002] Lighting devices are used in a variety of fields as devices that can supply light or adjust the amount of light. For example, lighting devices are applied to various fields such as vehicles and buildings to brighten the interior or exterior. In particular, light-emitting devices have recently been used as the light source for lighting. Such light-emitting devices, such as light-emitting diodes (LEDs), have advantages such as lower power consumption, a semi-permanent lifespan, fast response speed, safety, and environmental friendliness compared to existing light sources such as fluorescent lamps and incandescent lamps. Such light-emitting diodes are applied to various optical assemblies such as various display devices and interior or exterior lamps.

[0003] Generally, vehicles are equipped with lamps of various colors and shapes, and recently, lamps using light-emitting diodes (LEDs) as vehicle light sources have been proposed. For example, LEDs are used in vehicle headlights, taillights, turn signals, etc. However, LEDs have a problem in that the angle of light emitted from the LEDs is relatively small. Therefore, when LEDs are used as vehicle lamps, there is a demand for an increased light-emitting area of ​​the lamp. Furthermore, when a lamp includes LEDs, there is a problem that the performance of the LEDs is degraded or the uniformity of the emitted light is reduced due to rows generated when the LEDs emit light. Furthermore, when a lamp includes LEDs, there is a problem that the light emitted from the LEDs may cause hot spots. In this case, when a surface light source is realized using the lamp, there is a problem that the uniformity of the light-emitting surface is reduced.

[0004] Furthermore, when light-emitting diodes are generally used in vehicle lamps, there is a problem that the light-emitting diodes are visible from the outside. For example, when the vehicle lamp is turned on, the light emitted from the light source makes the light-emitting diode invisible, but when the lamp is turned off, the light-emitting diodes are visible from the outside, which reduces the aesthetic appeal and design freedom of the lamp. Therefore, a new lighting device and lamp that can solve the above problems is needed. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments aim to provide a lighting device and lamp with improved luminous intensity. The embodiments aim to provide a lighting device and lamp that can realize a uniform line light source or surface light source. The embodiments aim to provide a lighting device and lamp with improved heat dissipation characteristics. The embodiments aim to provide a lighting device and lamp that is flexible and can improve design freedom and aesthetics. [Means for solving the problem]

[0006] An illumination device according to an embodiment of the invention includes a reflective layer, a resin layer disposed on the reflective layer, a substrate disposed on the resin layer and including an electrode layer, a plurality of light-emitting elements disposed between the resin layer and the substrate, and a light-shielding layer disposed on the substrate, wherein the electrode layer includes a first pattern region disposed adjacent to the light-emitting elements, and a second pattern region disposed outside the first pattern region and having a pattern of a different size than the first pattern region, and the light-shielding layer includes a plurality of light-shielding pattern regions, which vertically overlap the first pattern region and have an area larger than the area of ​​the first pattern region.

[0007] According to an embodiment of the invention, the light-blocking pattern region may include a plurality of unit light-blocking patterns. The area of ​​the light-blocking pattern region may be 1.4 times or less larger than the area of ​​the first pattern region. The light-blocking layer may include an optical film spaced apart from the substrate. A portion of the light-blocking pattern region may vertically overlap the second pattern region.

[0008] An illumination device according to an embodiment of the invention includes a transparent substrate, a plurality of light-emitting elements arranged on a lower surface of the transparent substrate, a reflective layer arranged opposite the light-emitting surfaces of the plurality of light-emitting elements, a resin layer arranged between the transparent substrate and the reflective layer, and a light-shielding layer arranged on an upper surface of the transparent substrate, wherein the light-shielding layer includes a plurality of light-shielding pattern regions, and the reflective layer includes a plurality of reflective pattern regions, and based on the vertical direction, the plurality of light-emitting elements do not overlap with the reflective pattern regions but can overlap with the light-shielding pattern regions.

[0009] According to an embodiment of the present invention, a portion of the light-blocking pattern region may overlap the reflective pattern region in the vertical direction. The reflective pattern region may include a plurality of unit reflective patterns. The plurality of unit reflective patterns may have a higher density as they are farther from the light-emitting element. The reflective layer includes a film layer containing white PET (Polyethylene terephthalate), and the plurality of unit reflective patterns are disposed on the film layer.

[0010] According to an embodiment of the present invention, the light-shielding layer may include a light-transmitting region that transmits light emitted through the upper surface of the resin layer. The area of ​​the light-transmitting region may be larger than the area of ​​the plurality of light-shielding pattern regions. The light-transmitting region may be disposed between the plurality of light-shielding pattern regions.

[0011] An illumination device according to an embodiment of the invention includes a reflective layer, a first resin layer disposed on the reflective layer, a transparent substrate disposed on the first resin layer, a plurality of light-emitting elements disposed between the first resin layer and the transparent substrate, a light-shielding layer disposed on the transparent substrate, a second resin layer disposed between the transparent substrate and the light-shielding layer, and a half mirror layer disposed on the light-shielding layer, wherein the thickness of the first resin layer is greater than the thickness of the second resin layer, the light-shielding layer includes a light-shielding pattern region including a plurality of unit light-shielding patterns, the plurality of unit light-shielding patterns being spaced apart from each other and arranged in a rows by b columns (a and b are natural numbers greater than or equal to 2), and the unit light-shielding patterns disposed in two adjacent columns of the b columns may have the same size.

[0012] According to an embodiment of the invention, the plurality of unit light blocking patterns are arranged symmetrically in the horizontal direction with respect to the center of the light blocking pattern region. The size of the unit light blocking patterns arranged in one of the b rows located farthest from the light emitting element may be the same as the size of the unit light blocking patterns arranged in the row closest to the center of the light blocking pattern region. The plurality of unit light blocking patterns may have the same plane area.

[0013] According to an embodiment of the invention, the thickness of the half mirror layer in a region vertically overlapping with the light emitting element may be thicker than the thickness of the region not overlapping with the light emitting element, and the color of the half mirror layer may be the same as the color of the surrounding region of the lighting device.

[0014] According to an embodiment of the invention, the plurality of light-emitting elements are spaced apart and arranged in c rows and d columns (c and d are different natural numbers). The first resin layer has a major axis and a minor axis, and at least one of the major axis and the minor axis may have a curvature. The lighting device includes a housing having an open top and including an accommodating space therein, and the reflective layer, the first resin layer, the transparent substrate, the light-emitting elements, the light-shielding layer, the second resin layer, and the half mirror layer are arranged in the accommodating space. [Effects of the Invention]

[0015] The lighting device and lamp according to the embodiments may have improved optical characteristics. Specifically, the lighting device and lamp may minimize light loss during the process in which light emitted from the light emitting element is emitted to the outside of the lighting device by using a substrate having a predetermined thickness and a first resin layer, a second resin layer, etc. The lighting device and lamp according to the embodiments may be provided in various shapes due to the configuration having a predetermined thickness. Specifically, the lighting device may have a linear shape or may be provided in a curved shape in which at least one of the upper surface, lower surface, and side surface has a curvature. As a result, the lighting device may be provided in a linear or curved shape on a substrate having various shapes, thereby providing a line light source or a surface light source with uniform brightness.

[0016] In the lighting device and lamp according to the embodiments, light emitted from the light emitting element is not emitted directly but is emitted indirectly by being reflected by other internal components. This prevents the light emitting element from being directly visible from the outside and ensures a light guide distance for uniform brightness. Furthermore, the lighting device and lamp according to the embodiments can control hot spots, where light emitted from the light emitting element concentrates, by using a light-blocking layer. More specifically, the light-blocking layer includes a light-blocking pattern region arranged at a predetermined size and position, and the light-blocking pattern region includes a plurality of unit light-blocking patterns arranged at a predetermined size, shape, and interval. This prevents light emitted from the light emitting element from concentrating due to the light-blocking pattern region of the light-blocking layer. Therefore, the lighting device and lamp according to the embodiments can provide a line light source or a surface light source that emits light with uniform brightness.

[0017] The lighting device and lamp according to the embodiments may have improved heat dissipation characteristics. Specifically, the lighting device includes an electrode layer arranged in a predetermined pattern, and the electrode layer can effectively dissipate heat emitted from the light emitting element. Therefore, the lighting device and lamp according to the embodiments may have improved reliability and maintain uniform characteristics even when operated for a long time.

[0018] The lighting device and lamp according to the embodiments may have a set color, for example, a color that is the same as or similar to the color of the surrounding area of ​​the lighting device and lamp, when the lighting device is turned off. More specifically, the lighting device and lamp may include a half mirror layer having a color that is the same as or similar to the color of the surrounding area. This may provide a hidden effect that can make the lighting device invisible or minimize its visibility when the device is turned off, thereby improving aesthetics and design freedom. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a cross-sectional view of a lighting device according to an embodiment. [Figure 2] FIG. 2 is a plan view illustrating an electrode layer according to an embodiment. [Figure 3] FIG. 2 is an enlarged view of region A1 in FIG. [Figure 4] FIG. 2 is a plan view of a reflective layer according to an example. [Figure 5] FIG. 2 is a cross-sectional view of a light-shielding layer according to an example. [Figure 6] FIG. 2 is a plan view of a light-shielding layer according to an example. [Figure 7] FIG. 10 is another plan view of the light-shielding layer according to the example. [Figure 8] FIG. 10 is another plan view of the light-shielding layer according to the example. [Figure 9] FIG. 10 is a cross-sectional view of an illumination device according to an embodiment including a half mirror layer. [Figure 10] FIG. 4 is another cross-sectional view of the half mirror layer according to the embodiment. [Figure 11] 10 is a diagram illustrating that the lighting device according to the embodiment has shapes curved in various directions; [Figure 12] 10 is a diagram illustrating that the lighting device according to the embodiment has shapes curved in various directions; [Figure 13] 1 is a cross-sectional view of a lighting device according to an embodiment including a housing. [Figure 14] 1 is a cross-sectional view of a lighting device according to an embodiment including a housing. [Figure 15] 1 is a diagram illustrating an example in which a lamp including a lighting device according to an embodiment is applied to a vehicle. [Figure 16] 1 is a diagram illustrating an example in which a lamp including a lighting device according to an embodiment is applied to a vehicle. [Figure 17] 1 is a diagram illustrating an example in which a lamp including a lighting device according to an embodiment is applied to a vehicle. [Figure 18] 1 is a diagram illustrating an example in which a lamp including a lighting device according to an embodiment is applied to a vehicle. [Figure 19] 1 is a diagram illustrating an example in which a lamp including a lighting device according to an embodiment is applied to a vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0021] The technical concept of the present invention is not limited to the described embodiments and may be embodied in various forms. Elements of the embodiments may be selectively combined or substituted within the scope of the technical concept of the present invention. Furthermore, terms (including technical and scientific terms) used in the embodiments of the present invention, unless expressly specified, shall be interpreted as having meanings commonly understood by those skilled in the art to which the present invention pertains. Commonly used terms, such as dictionary-defined terms, shall be interpreted in light of the context of the relevant technology. Furthermore, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention. In this specification, the singular form "a," "an," or "an" may also include the plural form unless otherwise specified. For example, "at least one (or more) of A and B and C" refers to any combination of A, B, and C that can be combined. Furthermore, when describing elements of the embodiments of the present invention, terms such as "first," "second," "A," "B," "(a)," and "(b)" may be used. These terms are used to distinguish elements from other elements, and do not limit the nature or order of the elements. Furthermore, when a component is described as being "coupled," "coupled," or "connected" to another component, this includes both cases where the component is directly coupled or connected to the other component, and cases where further components are "coupled," "coupled," or "connected" between the components. Furthermore, when a component is described as being formed or located "above or below" another component, "above or below" does not only include cases where the two components are in direct contact, but also cases where one or more further components are formed or located between the two components. Furthermore, when the term "above or below" is used, it can mean not only the upper direction but also the lower direction based on one component.

[0022] The lighting device according to the present invention can be applied to various lamp devices requiring illumination, such as vehicle lamps, household optical assemblies, and industrial optical assemblies. For example, when applied to vehicle lamps, it can be used in headlamps, side mirror lights, side marker lights, fog lamps, tail lamps, brake lights, daytime running lights, vehicle interior lighting, door scuffs, rear combination lamps, and backup lamps. When applied to vehicle lamps, it can be used in rear side support systems (BSDs) located on side mirrors or A-pillars. The optical assembly of the present invention can also be used in indoor and outdoor advertising devices, display devices, and various train applications. It can also be used in all lighting-related and advertising-related fields that are currently being developed and commercialized, or that will be realized through future technological advances.

[0023] Before describing the embodiments of the present invention, the first direction may refer to the x-axis direction in the drawings, the second direction may refer to the y-axis direction in the drawings, and the third direction may refer to the z-axis direction in the drawings. Furthermore, the horizontal direction may refer to the first and second directions, and the vertical direction may refer to the third direction as a direction perpendicular to at least one of the first and second directions. For example, the horizontal direction may refer to the x-axis and y-axis directions in the drawings, and the vertical direction is the z-axis direction in the drawings, a direction perpendicular to the x-axis and y-axis directions.

[0024] Fig. 1 is a cross-sectional view of a lighting device according to an example, Fig. 2 is a plan view illustrating an electrode layer according to an example, Fig. 3 is an enlarged view of an A1 region in Fig. 1, Fig. 4 is a plan view of a reflective layer according to an example, Fig. 5 is a cross-sectional view of a light-shielding layer according to an example, and Fig. 6 is a plan view of a light-shielding layer according to an example.

[0025] 1 to 6, a lighting device 1000 according to an embodiment may include a substrate 100, a light emitting device 200, a reflective layer 300, a first resin layer 410, a second resin layer 420, and a light-blocking layer 500. The lighting device 1000 may emit light emitted from the light emitting device 200 as a surface light source. The lighting device 1000 may be defined as a light emitting cell, a lighting module, or a light source module. The lighting device 1000 may include one or more light emitting cells on the substrate 100.

[0026] The substrate 100 may include a light-transmitting material. The substrate 100 may include a material that transmits light through its upper and lower surfaces. The substrate 100 may be a transparent substrate. The substrate 100 may include at least one of PET (Polyethylene terephthalate), PS (Polystyrene), PI (Polyimide), PEN (Polyethylene naphthalate), and PC (Polycarbonate). The substrate 100 may have a thickness of approximately 30 μm to approximately 300 μm. If the substrate 100 has a thickness of less than approximately 30 μm, it may be difficult to effectively support components disposed thereon, such as the light emitting device 200, and a region of the substrate 100 where the light emitting device 200 is disposed may sag due to the weight of the light emitting device 200. This may reduce the reliability of the substrate 100 and cause alignment problems for the light emitting device 200 disposed thereon. Furthermore, if the thickness of the substrate 100 exceeds approximately 300 μm, the overall thickness of the lighting device 1000 increases and the flexibility of the substrate 100 decreases. Furthermore, if the thickness of the substrate 100 exceeds approximately 300 μm, the path of emitted light changes depending on the thickness of the substrate 100, making it difficult to realize a uniform surface light source.

[0027] Electrode layers 110 and 120 are disposed on the substrate 100. The electrode layers 110 and 120 are disposed on the lower surface of the substrate 100. More specifically, the electrode layers 110 and 120 are disposed on the lower surface of the substrate 100 facing the first resin layer 410. The electrode layers 110 and 120 may include a first electrode 110 and a second electrode 120. The first electrode 110 and the second electrode 120 may be spaced apart from each other on the lower surface of the substrate 100. For example, the first electrode 110 and the second electrode 120 may be spaced apart from each other in a first direction based on the light emitting device 200. As a result, the first electrode 110 and the second electrode 120 may be electrically isolated from each other. The first electrode 110 and the second electrode 120 may include a conductive material. For example, the first electrode 110 and the second electrode 120 may include at least one of aluminum (Al), copper (Cu), silver (Ag), gold (Au), chromium (Cr), nickel (Ni), molybdenum (Mo), titanium (Ti), and alloys thereof, carbon, and conductive polymers. The first electrode 110 and the second electrode 120 may include at least one of transparent conductive materials, such as indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), indium aluminum zinc oxide (IAZO), indium gallium zinc oxide (IGZO), indium gallium tin oxide (IGTO), aluminum zinc oxide (AZO), antimony tin oxide (ATO), and gallium zinc oxide (GZO). The first electrode 110 and the second electrode 120 may provide current to the light emitting element 200. For example, the first electrode 110 may provide a current having a first polarity to the light emitting element 200, and the second electrode 120 may provide a current having a second polarity opposite to the first polarity to the light emitting element 200.

[0028] The first electrode 110 may include a first pad 111 and a first electrode pattern 112. The first pad 111 is disposed in a region corresponding to the light emitting device 200. For example, the first pad 111 is disposed in a region corresponding to a first bonding portion (not shown) of the light emitting device 200. The first electrode pattern 112 is disposed around the first pad 111. The first electrode pattern 112 is connected to the first pad 111. The first electrode pattern 112 is electrically connected to the first bonding portion of the light emitting device 200. The first electrode pattern 112 may include a plurality of first sub-wires 1121 and a plurality of second sub-wires 1122 extending in different directions. The plurality of first sub-wires 1121 extend in a first direction. The plurality of first sub-wires 1121 may be spaced apart in a second direction perpendicular to the first direction. The plurality of second sub-wires 1122 extend in the second direction. The plurality of second sub-wirings 1122 may be spaced apart in the first direction. The first electrode pattern 112 may have a mesh shape in which the first sub-wirings 1121 and the second sub-wirings 1122 intersect. The first electrode pattern 112 may have a set line width. For example, the line width of the first electrode pattern 112 may be approximately 80 μm or less. Specifically, the line width of the first electrode pattern 112 may be approximately 60 μm or less. More specifically, the line width of the first electrode pattern 112 may be approximately 35 μm or less. The line widths of the plurality of first sub-wirings 1121 may be the same within the above-mentioned line width range. The line widths of the plurality of second sub-wirings 1122 may be the same within the above-mentioned line width range. The line widths of the first sub-wirings 1121 and the second sub-wirings 1122 may be the same.

[0029] The second electrode 120 may include a second pad 121 and a second electrode pattern 122. The second pad 121 is spaced apart from the first pad 111 and the first electrode pattern 112 and disposed in a region corresponding to the light emitting device 200. For example, the second pad 121 is disposed in a region corresponding to a second bonding portion (not shown) of the light emitting device 200. The second electrode pattern 122 is disposed around the second pad 121. The second electrode pattern 122 is spaced apart from the first pad 111 and the first electrode pattern 112 and connected to the second pad 121. The second electrode pattern 122 is electrically connected to the second bonding portion of the light emitting device 200. The second electrode pattern 122 may include a plurality of third sub-wires 1221 and a plurality of fourth sub-wires 1222 extending in different directions. The third sub-wires 1221 extend in a first direction. The third sub-wires 1221 may be spaced apart in a second direction perpendicular to the first direction. The fourth sub-wires 1222 extend in the second direction. The fourth sub-wires 1222 may be spaced apart in the first direction. The second electrode pattern 122 may have a mesh shape in which the third sub-wires 1221 and the fourth sub-wires 1222 intersect.

[0030] The second electrode pattern 122 may have a set line width. The second electrode pattern 122 may have the same line width as the first electrode pattern 112. For example, the line width of the second electrode pattern 122 may be approximately 80 μm or less. Specifically, the line width of the second electrode pattern 122 may be approximately 60 μm or less. More specifically, the line width of the second electrode pattern 122 may be approximately 35 μm or less. The line widths of the plurality of third sub-wirings 1221 may be the same within the above-mentioned range. The line widths of the plurality of fourth sub-wirings 1222 may be the same within the above-mentioned range. Furthermore, the line widths of the third sub-wirings 1221 and the fourth sub-wirings 1222 may be the same. The line widths of the first to fourth sub-wirings 1222 may be the same.

[0031] The electrode layers 110 and 120 may include a plurality of pattern regions. For example, each of the first electrode 110 and the second electrode 120 may include a first pattern region P1 and a second pattern region P2. The first pattern region P1 and the second pattern region P2 may have the same line width. The first pattern region P1 may include a 1-1 pattern region P1a of the first electrode 110 and a 1-2 pattern region P1b of the second electrode 120.

[0032] The 1-1 pattern region P1a is a region disposed adjacent to the light emitting device 200. The 1-1 pattern region P1a is a region formed by the intersection of the first sub-wire 1121 and the second sub-wire 1122 and is disposed around the first pad 111. The 1-1 pattern region P1a is physically and electrically connected to the first pad 111. The 1-1 pattern region P1a is electrically connected to a first bonding portion of the light emitting device 200. The 1-2 pattern region P1b is a region disposed adjacent to the light emitting device 200. The 1-2 pattern region P1b is spaced apart from the 1-1 pattern region P1a. The 1-2 pattern region P1b is a region formed by the intersection of the third sub-wire 1221 and the fourth sub-wire 1222 and is disposed around the second pad 121. The 1-2 pattern region P1b is physically and electrically connected to the second pad 121. The first-2 pattern region P1b is electrically connected to the second bonding portion of the light emitting device 200.

[0033] Each of the first-1 pattern region P1a and the first-2 pattern region P1b may include a plurality of first unit patterns having a first opening region O1. The first unit pattern of the first-1 pattern region P1a may have the same shape as the first unit pattern of the first-2 pattern region P1b. The first unit pattern of the first-1 pattern region P1a may also have the same size as the first unit pattern of the first-2 pattern region P1b. That is, the first opening region O1 of the first-1 pattern region P1a may have the same shape and size as the first opening region O1 of the first-2 pattern region P1b. The first unit patterns may have a mesh shape. Each of the first unit patterns of the first-1 pattern region P1a and the first-2 pattern region P1b may have a predetermined width a1 and a predetermined length a2. For example, the width a1 and the length a2 of the first unit pattern may each be approximately 250 μm or less. The width a1 and the length a2 of the first unit pattern may each be approximately 200 μm or less. In this case, the width a1 and the length a2 of the first unit pattern may be the same. That is, the first unit patterns of the 1-1 pattern region P1a and the 1-2 pattern region P1b may have a square shape.

[0034] The 1-1 pattern region P1a is disposed symmetrically to the 1-2 pattern region P1b on the substrate 100. More specifically, the 1-1 pattern region P1a and the 1-2 pattern region P1b may be symmetrical to each other with respect to the light emitting element 200. That is, the number of the first opening regions O1 included in the 1-1 pattern region P1a may be the same as the number of the first opening regions O1 included in the 1-2 pattern region P1b. Furthermore, the area occupied by the 1-1 pattern region P1a with respect to the light emitting element 200 may be the same as the area occupied by the 1-2 pattern region P1b.

[0035] The second pattern region P2 is disposed outside the first pattern region P1. The second pattern region P2 may include a 2-1 pattern region P2a of the first electrode 110 and a 2-2 pattern region P2b of the second electrode 120. The 2-1 pattern region P2a is a region separated from the light emitting device 200. The 2-1 pattern region P2a is a region formed by the intersection of the first sub-wiring 1121 and the second sub-wiring 1122 and is disposed around the 1-1 pattern region P1a. The 2-1 pattern region P2a is physically and electrically connected to the 1-1 pattern region P1a. The 2-1 pattern region P2a is electrically connected to a first bonding part of the light emitting device 200.

[0036] The 2-2 pattern region P2b is a region separated from the light emitting device 200. The 2-2 pattern region P2b is separated from the 2-1 pattern region P2a. The 2-2 pattern region P2b is a region formed by the intersection of the third sub-wiring 1221 and the fourth sub-wiring 1222 and is disposed around the 1-2 pattern region P1b. The 2-2 pattern region P2b is physically and electrically connected to the 1-2 pattern region P1b. The 2-2 pattern region P2b is electrically connected to a second bonding part of the light emitting device 200. Each of the 2-1 pattern region P2a and the 2-2 pattern region P2b may include a plurality of second unit patterns having a second opening region O2. In this case, the second unit patterns of the 2-1 pattern region P2a may have the same shape as the second unit patterns of the 2-2 pattern region P2b. In addition, the second unit pattern of the 2-1 pattern region P2a may have the same size as the second unit pattern of the 2-2 pattern region P2b. That is, the second opening region O2 of the 2-1 pattern region P2a may be provided with the same shape and size as the second opening region O2 of the 2-2 pattern region P2b. The second unit pattern may have a mesh shape.

[0037] Each of the second unit patterns of the 2-1 pattern region P2a and the 2-2 pattern region P2b may have a predetermined width B1 and a predetermined height B2. For example, the width B1 and the height B2 of the second unit pattern may be approximately 450 μm or less. Specifically, the width B1 and the height B2 of the second unit pattern may be approximately 400 μm or less. In this case, the width B1 and the height B2 of the second unit pattern may be the same. That is, the second unit patterns of the 2-1 pattern region P2a and the 2-2 pattern region P2b may have a square shape. The 2-1 pattern region P2a is disposed symmetrically with the 2-2 pattern region P2b on the substrate 100. Specifically, the 2-1 pattern region P2a and the 2-2 pattern region P2b may be symmetrical with each other with respect to the light emitting device 200. That is, the number of the second opening regions O2 included in the 2-1 pattern region P2a may be the same as the number of the second opening regions O2 included in the 2-2 pattern region P2b. Furthermore, the area occupied by the 2-1 pattern region P2a based on the light emitting element 200 may be the same as the area occupied by the 2-2 pattern region P2b.

[0038] In this case, in the lighting device 1000 according to the embodiment, the size of the second unit pattern in the second pattern region P2 may be different from the size of the first unit pattern in the first pattern region P1. For example, the size of the second unit pattern may be larger than the size of the first unit pattern. Specifically, the width B1 and the length B2 of the second unit pattern may be larger than the width a1 and the length a2 of the first unit pattern. Thus, that is, the width (width or length) of the second opening region O2 may be larger than the width (width or length) of the first opening region O1.

[0039] The first pattern region P1 of the electrode layers 110 and 120 may have a predetermined shape. For example, when viewed from above, the first pattern region P1 of the first electrode 110 and the second electrode 120 may have a circular, elliptical, or polygonal shape, or a shape similar to the above shapes. More specifically, the first pattern region P1 may have a circular, elliptical, or polygonal shape centered on the optical axis of the light emitting device 200, or a shape similar to the above shapes. For example, the first pattern region P1 may have a shape corresponding to a hot spot formed by the light emitting device 200. That is, the first pattern region P1 formed by the plurality of first unit patterns may have a shape similar to a circle.

[0040] Furthermore, the first pattern region P1 may have a set area. For example, the area occupied by the first pattern region P1 including the plurality of first unit patterns in the electrode layers 110 and 120 may correspond to a hot spot formed by the light emitting element 200. The area occupied by the first pattern region P1 in the electrode layers 110 and 120 may be larger than the area of ​​the light emitting element 200. For example, the area occupied by the first pattern region P1 may be approximately 5 to 15 times the area of ​​the light emitting element 200. More specifically, the area occupied by the first pattern region P1 may be approximately 5 to 15 times the area of ​​the bottom surface of the light emitting element 200 adjacent to the substrate 100. More specifically, the area occupied by the first pattern region P1 may be approximately 5 to 10 times the area of ​​the bottom surface of the light emitting element 200.

[0041] If the area occupied by the first pattern region P1 is less than approximately five times the area of ​​the bottom surface of the light emitting device 200, it is difficult to effectively prevent hot spots from forming in the light emitting device 200. That is, if the area of ​​the first pattern region P1 is too small, hot spots will form in the area around the first pattern region P1. If the area occupied by the first pattern region P1 exceeds approximately 15 times the area of ​​the bottom surface of the light emitting device 200, hot spots can be prevented from forming in the light emitting device 200, but the area occupied by the first pattern region P1 is too large, reducing the amount of light emitted through the opening regions of the electrode layers 110 and 120. This reduces the overall brightness of the lighting device 1000. Therefore, it is preferable that the area occupied by the first pattern region P1 on the electrode layers 110 and 120 satisfy the above-mentioned range relative to the area of ​​the light emitting device 200. The lighting device 1000 of the embodiment has improved luminous efficiency and can emit uniform light, and since the electrode layers 110 and 120 include multiple pattern areas P1 and P2, it can effectively dissipate heat emitted from the light-emitting element 200.

[0042] The light emitting device 200 is disposed on the substrate 100. For example, the light emitting device 200 is disposed on the lower surface of the substrate 100. The light emitting device 200 is disposed opposite a reflective layer 300, which will be described later. The light emitting device 200 may be an LED chip emitting light from at least five sides and disposed on the substrate 100 in a flip chip form. Alternatively, the light emitting device 200 may be a horizontal chip or a vertical chip. In the horizontal chip, two different electrodes are disposed horizontally, and in the vertical chip, two different electrodes are disposed vertically. When the light emitting device 200 is a horizontal chip or a vertical chip, it is connected to other chips or wiring patterns by wires. Therefore, the thickness of the module increases depending on the height of the wires, and pad space for wire bonding is required.

[0043] The light emitting device 200 may also include a package in which an LED chip is packaged. The LED chip may emit at least one of blue, red, green, ultraviolet (UV), and infrared light, and the light emitting device 200 may emit at least one of white, blue, red, green, and infrared light. The light emitting device 200 may be a top-view type whose bottom is electrically connected to the substrate 100. The optical axis of the light emitting device 200 may be perpendicular to the bottom surface of the substrate 100. The light emitting device 200 is electrically connected to the electrode layers 110 and 120. For example, the light emitting device 200 is electrically connected to the first electrode 110 and the second electrode 120 on the substrate 100 by a conductive bonding member (not shown). The conductive bonding member may be made of a solder material or a metal material.

[0044] A plurality of the light emitting elements 200 may be disposed on the substrate 100. For example, a plurality of the light emitting elements 200 may be disposed on the substrate 100, spaced apart in a first direction (x-axis direction). A plurality of the light emitting elements 200 may be disposed on the substrate 100, spaced apart in a second direction (y-axis direction). For example, the plurality of light emitting elements 200 may be disposed in c rows and d columns (c and d are the same or different natural numbers) in a plan view. The light emitting elements 200 may include a light emitting surface from which light is emitted. The light emitting surface of the light emitting element 200 may face the upper surface of the reflective layer 300. The light emitting surface may be parallel to the upper surface of the reflective layer 300. The light emitting surface of the light emitting element 200 may emit light with the highest intensity in the third direction (z-axis direction), for example, toward the upper surface of the reflective layer 300. The light emitting surface may be a vertical plane or may include a concave or convex surface.

[0045] The light emitting device 200 may emit light toward the reflective layer 300. For example, light emitted through a light emitting surface of the light emitting device 200 is provided to the reflective layer 300. The light provided to the reflective layer 300 is reflected by the reflective layer 300 and emitted toward the substrate 100, and the light passing through the substrate 100 may have the form of a line light source or a surface light source. That is, the lighting device 1000 may be an indirect lighting device. This prevents the light emitting device 200 from being viewed from the outside. In this case, the optical axis of the light emitting device 200 may be perpendicular to the bottom surface of the substrate 100. Alternatively, the optical axis of the light emitting device 200 may be perpendicular to the top surface of the reflective layer 300.

[0046] The reflective layer 300 is disposed on the substrate 100. More specifically, the reflective layer 300 is disposed on the lower surface of the substrate 100. The reflective layer 300 is disposed on the lower surface of the substrate 100 and below the light emitting element 200. The reflective layer 300 is spaced apart from the substrate 100 and the light emitting element 200 and faces the light emitting surface of the light emitting element 200. The reflective layer 300 may have an area greater than or equal to the area of ​​the lower surface of the substrate 100.

[0047] The reflective layer 300 may include a film layer (not shown). The film layer may be provided in the form of a film made of a metallic or non-metallic material. The metallic material may include metals such as aluminum, silver, and gold. The non-metallic material may include plastic or resin materials. The plastic material may be any one selected from the group consisting of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polychlorinated biphenyl, polyethylene terephthalate, polyvinyl alcohol, polycarbonate, polybutylene terephthalate, polyethylene naphthalate, polyamide, polyacetal, polyphenylene ether, polyamide-imide, polyether-imide, polyether-ether-ketone, polyimide, polytetrafluoroethylene, liquid crystal polymer, fluororesin, copolymers thereof, and mixtures thereof. The resin material may be silicone or epoxy to which a reflective material, for example, a metal oxide such as TiO2, Al2O3, or SiO2, is added. The film layer may be implemented as a single layer or multiple layers, and such a layer structure can improve light reflection efficiency. The film layer may also be provided in a color. Specifically, the film layer may be provided in a color having low light absorption and excellent light reflectance. For example, the film layer may be provided in a white color having excellent light reflectance. Specifically, the film layer may be formed of white polyethylene naphthalate.

[0048] The reflective layer 300 may include a plurality of reflective pattern regions R1. The reflective pattern regions R1 are disposed in regions that do not correspond to the light emitting device 200. Specifically, the reflective pattern regions R1 are disposed in regions that do not overlap the light emitting device 200 in the vertical direction (third direction, z-axis direction). Each of the reflective pattern regions R1 may have various shapes when viewed from above. For example, the top shape of the reflective pattern region R1 may be circular, elliptical, polygonal, or similar to the above shapes. In this case, the reflective pattern region R1 may be provided in a donut shape that is not disposed in a region that corresponds to the light emitting device 200 in the vertical direction. The reflective pattern region R1 may also be formed in the entire remaining region of the reflective layer 300 except for the region that corresponds to the light emitting device 200.

[0049] The reflective pattern region R1 may include a plurality of unit reflective patterns 310. The reflective pattern region R1 may refer to an area where a plurality of unit reflective patterns 310 are arranged. The unit reflective patterns 310 may have a dot shape. The unit reflective patterns 310 are disposed on the lower surface of the substrate 100 and on the upper surface of the reflective layer 300 facing the light emitting device 200. More specifically, the unit reflective patterns 310 are disposed on the upper surface of the film layer facing the light emitting device 200. The unit reflective patterns 310 are disposed in a protruding form on the upper surface of the reflective layer 300, for example, on the upper surface of the film layer. For example, the unit reflective patterns 310 are disposed in a protruding form from the upper surface of the reflective layer 300 toward the light emitting device 200.

[0050] The unit reflection patterns 310 are spaced apart from one another in the first and second directions and are arranged in regions that do not correspond to the light emitting device 200. Specifically, the unit reflection patterns 310 are arranged in regions that do not overlap with the light emitting device 200 in the vertical direction (third direction, z-axis direction). The unit reflection patterns 310 are also arranged in regions that vertically overlap with the electrode layers 110 and 120. For example, the unit reflection patterns 310 are arranged in regions that vertically overlap with a first pattern region P1 of the electrode layers 110 and 120. Specifically, the unit reflection patterns 310 are arranged to vertically overlap with the first and second pattern regions P1 and P2 of the electrode layers 110 and 120.

[0051] The unit reflective patterns 310 may be formed by a printing process. For example, the unit reflective patterns 310 may include reflective ink. The unit reflective patterns 310 may be printed using a material including any one of TiO2, CaCO3, BaSO4, Al2O3, silicon, and PS. The material of the unit reflective patterns 310 may be white, which has excellent reflective properties. The unit reflective patterns 310 may have various shapes, such as a circle, an ellipse, or a polygon, when viewed from above. Furthermore, each of the unit reflective patterns 310 may have a hemispherical or polygonal side cross section.

[0052] The pattern density of the unit reflection patterns 310 may vary with increasing distance from the region corresponding to the light emitting device 200. For example, the density of the unit reflection patterns 310 may increase with increasing distance from an overlapping region on the top surface of the reflective layer 300 that vertically overlaps with the light emitting device 200. That is, the density of the unit reflection patterns 310 may increase with increasing distance from the optical axis of the light emitting device 200 in the horizontal direction. Furthermore, the size of each of the unit reflection patterns 310 may be constant or may increase with increasing distance from the overlapping region. For example, the horizontal width of each of the unit reflection patterns 310 may increase with increasing distance from the overlapping region. That is, since the unit reflection patterns 310 are disposed on a portion of the top surface of the reflective layer 300 that does not overlap with the light emitting device 200, the reflective layer 300 can improve the reflectivity of light emitted from the light emitting device 200. Therefore, the lighting device 1000 can reduce the loss of light emitted to the outside through the open area of ​​the substrate 100, thereby improving the brightness of the surface light source.

[0053] The reflective layer 300 may have a thickness of approximately 50 μm to approximately 500 μm. If the thickness of the reflective layer 300 is less than approximately 50 μm, the light reflection characteristics of the reflective layer 300 are reduced, resulting in a decrease in the reliability of the lighting device 1000. Furthermore, if the thickness of the reflective layer 300 exceeds approximately 500 μm, the overall thickness of the lighting device 1000 is increased, thereby reducing the flexibility of the lighting device 1000. Preferably, the reflective layer 300 has a thickness of approximately 80 μm to approximately 350 μm, taking into consideration reliability, light reflection characteristics, and the like. As a result, the reflective layer 300 can effectively reflect incident light so that the light is emitted with a uniform distribution, thereby increasing the overall light amount of the lighting device 1000.

[0054] The first resin layer 410 is disposed on the substrate 100. The first resin layer 410 is disposed on the lower surface of the substrate 100. The first resin layer 410 is disposed between the substrate 100 and the reflective layer 300. The first resin layer 410 is disposed between the lower surface of the substrate 100 and the upper surface of the reflective layer 300. The first resin layer 410 is disposed on the entire lower surface of the substrate 100 or a partial region thereof.

[0055] The first resin layer 410 may be formed of a transparent material. The first resin layer 410 may include a resin material such as silicone or epoxy. The first resin layer 410 may include a thermosetting resin material, such as PC, OPS, PMMA, or PVC. The first resin layer 410 may be formed of glass, but is not limited thereto. For example, the main material of the first resin layer 410 may be a resin material whose main ingredient is urethane acrylate oligomer. For example, a mixture of urethane acrylate oligomer, which is a synthetic oligomer, and a polymer type such as polyacrylic may be used. Of course, a monomer containing a low-boiling point dilutable reactive monomer such as IBOA (isobornyl acrylate), HPA (Hydroxylpropyl acrylate), or 2-HEA (2-hydroxyethyl acrylate) may be further included, and a photoinitiator (e.g., 1-hydroxycyclohexyl phenyl-ketone) or an antioxidant may be mixed as an additive. The first resin layer 410 is a resin layer that guides light, and is therefore thinner than glass and is provided as a flexible plate. The first resin layer 410 can emit point light emitted from the light emitting device 200 in the form of a line light source or a surface light source.

[0056] The upper surface of the first resin layer 410 may diffuse light emitted from the light emitting device 200 to emit light. For example, beads (not shown) may be included in the first resin layer 410, and the beads may diffuse and reflect incident light to increase the amount of light. The beads may be disposed in a range of 0.01 to 0.3% by weight of the first resin layer 410. The beads may be made of any one selected from the group consisting of silicone, silica, glass bubbles, PMMA (Polymethyl methacrylate), urethane, Zn, Zr, Al2O3, and acrylic, and may have a particle size ranging from approximately 1 μm to approximately 20 μm, but is not limited thereto.

[0057] The first resin layer 410 may have a thickness greater than that of the light emitting device 200. For example, the first resin layer 410 may have a thickness of approximately 5 mm or less. More specifically, the first resin layer 410 may have a thickness of approximately 0.5 mm to approximately 4 mm. If the thickness h1 of the first resin layer 410 is less than approximately 0.5 mm, it is difficult to effectively guide the light emitted from the light emitting device 200. That is, the gap between the light emitting device 200 and the reflective layer 300 is too small, making it difficult for the lighting device 1000 to realize a surface light source. Furthermore, if the thickness h1 of the first resin layer 410 exceeds approximately 4 mm, the overall light path increases. As a result, light loss occurs during the process of emitting light from the light emitting device 200. Therefore, it is preferable that the thickness h1 of the first resin layer 410 satisfies the above-mentioned range. The first resin layer 410 is disposed to surround the light emitting device 200. The first resin layer 410 may seal the light emitting device 200. The first resin layer 410 may protect the light emitting device 200 and reduce loss of light emitted from the light emitting device 200.

[0058] The first resin layer 410 may be in contact with a surface of the light emitting device 200 and may be in contact with a light emitting surface of the light emitting device 200. In addition, the first resin layer 410 may be in contact with a lower surface of the substrate 100 and an upper surface of the reflective layer 300. That is, the first resin layer 410 may support the substrate 100, the light emitting device 200, and the reflective layer 300, and may allow the components 100, 200, and 300 to maintain a set distance and a set position.

[0059] The second resin layer 420 is disposed on the substrate 100. The second resin layer 420 is disposed on the upper surface of the substrate 100, opposite the lower surface of the substrate 100 on which the first resin layer 410 is disposed. The second resin layer 420 is disposed on the entire upper surface of the substrate 100 or on a partial region thereof. The second resin layer 420 may be formed of a transparent material. The second resin layer 420 may include a resin material such as silicone or epoxy. The second resin layer 420 may include a thermosetting resin material, such as PC, OPS, PMMA, or PVC. As another example, the second resin layer 420 may be formed of glass. For example, the main material of the second resin layer 420 may be a resin material whose main ingredient is urethane acrylate oligomer. For example, a mixture of a synthetic oligomer, urethane acrylate oligomer, and a polymer type such as polyacrylic may be used. Of course, the second resin layer 420 may further include a monomer containing a low-boiling point dilute reactive monomer such as IBOA (isobornyl acrylate), HPA (Hydroxylpropyl acrylate), or 2-HEA (2-hydroxyethyl acrylate), and may further include a photoinitiator (e.g., 1-hydroxycyclohexyl phenyl-ketone) or an antioxidant as an additive. The second resin layer 420 may include the same material as the first resin layer 410.

[0060] The second resin layer 420 serves as a light-guiding layer. For example, the second resin layer 420 may guide incident light that passes through the substrate 100. More specifically, the second resin layer 420 may further diffuse light that is reflected by the reflective layer 300 and passes through the first resin layer 410 and the substrate 100. For example, the second resin layer 420 may include beads (not shown), which may diffuse and reflect incident light to increase the amount of light. The beads may be disposed in a range of 0.01 to 0.3% by weight of the second resin layer 420. The beads may be made of any one selected from the group consisting of silicone, silica, glass bubbles, PMMA (Polymethyl methacrylate), urethane, Zn, Zr, Al2O3, and acrylic, and may have a particle size ranging from approximately 1 μm to approximately 20 μm, but are not limited thereto. The second resin layer 420 may function as an adhesive layer. For example, the second resin layer 420 may be provided as an adhesive layer that bonds the substrate 100 disposed below the second resin layer 420 and both components disposed above the second resin layer 420.

[0061] The second resin layer 420 may have a predetermined thickness h2. For example, the thickness h2 of the second resin layer 420 may be approximately 2 mm or less. Specifically, the thickness h2 of the second resin layer 420 may be approximately 50 μm to approximately 1.5 mm. If the thickness h2 of the second resin layer 420 is less than approximately 50 μm, it may be difficult for the second resin layer 420 to function as an adhesive layer bonding the substrate 100 and components disposed thereon, and may be difficult to effectively guide light incident on the second resin layer 420. That is, since the thickness h2 of the second resin layer 420 is relatively thin, there is insufficient space for guiding light emitted through the substrate 100. Furthermore, if the lighting device 1000 is bent in a third direction, for example, into a wave shape, due to an external force, the thickness h2 of the second resin layer 420 may be too thin, making it difficult to effectively guide light emitted through the substrate 100 and the first resin layer 410. Furthermore, if the thickness h2 of the second resin layer 420 exceeds approximately 1.5 mm, the brightness uniformity of the light emitted through the second resin layer 420 decreases. If the thickness h2 of the second resin layer 420 exceeds approximately 1.5 mm, the overall thickness of the lighting device 1000 increases, reducing design freedom, and light loss occurs due to the thickness h2 of the second resin layer 420. Therefore, it is preferable that the thickness h2 of the second resin layer 420 satisfy the above range.

[0062] The thickness h2 of the second resin layer 420 may be different from the thickness h1 of the first resin layer 410. For example, the thickness h2 of the second resin layer 420 may be thinner than the thickness h1 of the first resin layer 410. For example, the thickness h2 of the second resin layer 420 may be approximately 0.03% to approximately 95% of the thickness h1 of the first resin layer 410. As a result, the lighting device 1000 according to the embodiment can emit light as a surface light source with excellent uniformity. That is, since the first and second resin layers 410 and 420 satisfy the above-mentioned thickness ranges, the uniformity of light emitted through the upper surface of the second resin layer 420 is excellent.

[0063] The light-blocking layer 500 is disposed on the substrate 100. Specifically, the light-blocking layer 500 is disposed on the second resin layer 420. For example, the light-blocking layer 500 is disposed on an upper surface of the second resin layer 420 and is spaced apart from the substrate 100. The light-blocking layer 500 may include an optical film 510 and a plurality of light-blocking pattern regions R2 including a plurality of unit light-blocking patterns 530. The optical film 510 may include a transparent material. The optical film 510 is spaced apart from the substrate 100 and may transmit light emitted upward from the upper surface of the second resin layer 420. The optical film 510 may include a material having a light transmittance of approximately 80% or more. Specifically, the optical film 510 may include a material having a light transmittance of approximately 85% or more. The optical film 510 may include at least one of PET (Polyethylene terephthalate), PS (Polystyrene), PI (Polyimide), PEN (Polyethylene naphthalate), and PC (Polycarbonate).

[0064] The light-shielding pattern region R2 may have a predetermined shape. For example, when each of the light-shielding pattern regions R2 is viewed from above, the light-shielding pattern region R2 may have a circular, elliptical, polygonal, or similar shape. Here, the light-shielding pattern region R2 refers to a region in which the plurality of unit light-shielding patterns 530 are formed, and may refer to a region in which the outer edges of the plurality of unit light-shielding patterns 530 arranged at the outermost positions of the region R2 are connected by straight lines or curved lines.

[0065] The plurality of light-shielding pattern regions R2 are arranged in regions corresponding to the plurality of light-emitting elements 200. Specifically, the light-shielding pattern region R2 is arranged in a region overlapping the light-emitting elements 200 in the vertical direction (third direction). Furthermore, a portion of the light-shielding pattern region R2 is arranged in a region overlapping the reflective pattern region R1 in the vertical direction. The plurality of light-shielding pattern regions R2 are provided in a number corresponding to the plurality of light-emitting elements 200. That is, one light-shielding pattern region R2 is matched one-to-one with one light-emitting element 200. The area of ​​the light-shielding pattern region R2 may be larger than the area of ​​the bottom surface of the light-emitting element 200. For example, the area of ​​the light-shielding pattern region R2 may be approximately 5 to 20 times the area of ​​the bottom surface of the light-emitting element 200. Specifically, the area of ​​the light-shielding pattern region R2 may be approximately 8 to 15 times the area of ​​the bottom surface of the light-emitting element 200.

[0066] The area of ​​the light-shielding pattern region R2 may be smaller than the area of ​​the light-transmitting region of the light-shielding layer 500 other than the light-shielding pattern region R2. That is, the entire area of ​​the light-shielding pattern region R2 may be smaller than the area of ​​the light-transmitting region of the light-shielding layer 500 located between the light-shielding pattern regions R2 and not including the unit light-shielding pattern 530. The light-shielding pattern region R2 is disposed in a region that vertically overlaps with the first pattern region P1 of the electrode layers 110 and 120. In this case, the area of ​​the light-shielding pattern region R2 may be larger than the area of ​​the first pattern region P1. Specifically, the area of ​​the light-shielding pattern region R2 may be larger within a range of approximately 1.4 times or less than the area of ​​the first pattern region P1. More specifically, the area of ​​the light-shielding pattern region R2 may be larger within a range of approximately 1.25 times or less than the area of ​​the first pattern region P1. That is, since the light-shielding pattern region R2 is provided with an area larger than that of the first pattern region P1, a portion of the light-shielding pattern region R2 is disposed in an area that overlaps with the second pattern region P2 of the electrode layers 110 and 120 in the vertical direction (z-axis direction).

[0067] The plurality of unit light-shielding patterns 530 are disposed on the optical film 510. The unit light-shielding patterns 530 are disposed on at least one of a lower surface of the optical film 510 facing the second resin layer 420 and an upper surface opposite the lower surface. For example, the unit light-shielding patterns 530 may be disposed on the lower surface of the optical film 510 and face the upper surface of the second resin layer 420, as shown in FIG.

[0068] The unit light-shielding patterns 530 may include ink. The unit light-shielding patterns 530 may be white, which has excellent reflectivity. For example, the unit light-shielding patterns 530 may be printed using a material including any one of TiO2, CaCO3, BaSO4, Al2O3, silicon, and PS. As a result, the unit light-shielding patterns 530 may protrude from the lower surface of the optical film 510 toward the second resin layer 420.

[0069] The unit light-shielding patterns 530 are spaced apart from one another on the optical film 510. The unit light-shielding patterns 530 are spaced apart from one another in the first and second directions, as shown in FIG. 6 . For example, adjacent unit light-shielding patterns 530 in the first direction may be spaced apart by a first distance d1, and adjacent unit light-shielding patterns 530 in the second direction may be spaced apart by a second distance d2. In this case, the first distance d1 and the second distance d2 may be the same. For example, the first distance d1 and the second distance d2 may be approximately 300 μm or less. That is, the unit light-shielding patterns 530 are arranged in a rows and b columns (a and b are natural numbers greater than or equal to 2) and are spaced apart at equal intervals in the first and second directions.

[0070] The unit light blocking patterns 530 are arranged at predetermined positions. For example, the unit light blocking patterns 530 arranged in each of the first to a-th rows are arranged on the same line. More specifically, a virtual line connecting the centers of the unit light blocking patterns 530 arranged in each row may be parallel to the first direction. Furthermore, the unit light blocking patterns 530 arranged in each of the first to b-th columns are arranged on the same line. More specifically, a virtual line connecting the centers of the unit light blocking patterns 530 arranged in each column may be parallel to the second direction. The unit light blocking patterns 530 are arranged symmetrically in the horizontal direction with respect to the center of the light blocking pattern region R2. For example, the unit light blocking patterns 530 are arranged symmetrically with respect to a virtual line extending from the center of the light blocking pattern region R2 in the first and second directions. Furthermore, the unit light blocking patterns 530 are arranged symmetrically with respect to the origin with respect to the center of the light blocking pattern region R2. Here, the center of the light-shielding pattern region R2 may overlap the light emitting element 200 in the vertical direction.

[0071] The plurality of unit light blocking patterns 530 are arranged in a set number. Specifically, the numbers of the unit light blocking patterns 530 arranged in the first to a-th rows (a is a natural number equal to or greater than 2) of the a rows x b columns may be different from one another or may be partially the same. For example, the number of unit light blocking patterns 530 arranged in each of the first to a-th rows is greatest in the row that overlaps with or is closest to the center of the light blocking pattern region R2, and is least in the rows that are farthest from the center of the light blocking pattern region R2, for example, the first row (topmost row in FIG. 6) and the a-th row (bottommost row in FIG. 6).

[0072] The number of unit light blocking patterns 530 arranged in two adjacent rows among the first to a-th rows may be the same. For example, when a is 5 or greater, the number of unit light blocking patterns 530 arranged in a row overlapping or closest to the center of the light blocking pattern region R2 may be the same as the number of unit light blocking patterns 530 arranged in a row located immediately above and / or below the row. The numbers of unit light blocking patterns 530 arranged in the first to b-th columns (b is a natural number greater than or equal to 2) of the a rows x b columns may be different from each other or partially the same. For example, the number of unit light blocking patterns 530 arranged in each of the first to b-th columns is greatest in the column overlapping or closest to the center of the light blocking pattern region R2, and least in the columns farthest from the center of the light blocking pattern region R2, e.g., the first column (leftmost in FIG. 6 ) and the b column (rightmost in FIG. 6 ). The numbers of unit light blocking patterns 530 arranged in two adjacent columns among the first to b-th columns may be the same. For example, if b in the b column is 5 or greater, the number of unit light-shielding patterns 530 arranged in a row that overlaps with or is closest to the center of the light-shielding pattern region R2 may be the same as the number of unit light-shielding patterns 530 arranged in columns immediately to the left and / or right of the row. The values ​​of a and b may be the same in the a rows x b columns. For example, the unit light-shielding patterns 530 may be provided in an a rows x a columns array on the light-shielding layer 500. In this case, the number of unit light-shielding patterns 530 arranged in each of the first to a rows may be the same as the number of unit light-shielding patterns 530 arranged in the corresponding first to a columns. That is, the number of unit light-shielding patterns 530 arranged in the n row and the n column may be the same. For example, when the unit light blocking patterns 530 are arranged in 7 rows and 7 columns in the light blocking pattern region R2 as shown in FIG. 6, the number of unit light blocking patterns 530 arranged in each of rows 1 and columns 1 may be the same, and the number of unit light blocking patterns 530 arranged in each of rows 3 and columns 3 may be the same.

[0073] The density of the unit light blocking patterns 530 may vary in the light blocking pattern region R2. For example, the density of the unit light blocking patterns 530 may decrease as the distance from the region perpendicular to the optical axis of the light emitting device 200 increases. The unit light blocking patterns 530 may have a predetermined size. Specifically, each of the unit light blocking patterns 530 arranged in the a rows x b columns may have a predetermined size. For example, the unit light blocking patterns 530 arranged in two adjacent rows of the a rows may have the same size. Specifically, the size of the unit light blocking patterns 530 arranged in the row a that overlaps with or is closest to the center of the light blocking pattern region R2 may be the same as the size of the unit light blocking patterns 530 arranged in the rows above and / or below it. The size of the unit light blocking patterns 530 arranged in two adjacent columns of the b columns may be the same. In detail, the size of the unit light blocking patterns 530 arranged in the row that overlaps with or is closest to the center of the light blocking pattern region R2 among the row b may be the same as the size of the unit light blocking patterns 530 arranged in the rows located to the left and / or right thereof.

[0074] For example, the plurality of unit light-shielding patterns 530 may include a central pattern 539, a first pattern 531, a second pattern 532, a third pattern 533, and a fourth pattern 534. The central pattern 539 is disposed in a region overlapping the center of the light-shielding pattern region R2 or closest to the center. The first pattern 531 is disposed on the leftmost side (first column) of the light-shielding pattern region R2, and the second pattern 532 is disposed on the rightmost side (b-th column) of the light-shielding pattern region R2. The third pattern 533 is disposed on the topmost side (first row) of the light-shielding pattern region R2, and the fourth pattern 534 is disposed on the bottommost side (a-th row) of the light-shielding pattern region R2. Here, the first to fourth patterns 531, 532, 533, and 534 are unit light-shielding patterns 530 located farthest from the light-emitting element 200. In this case, the central pattern 539 and the first to fourth patterns 531, 532, 533, and 534 may each have a first horizontal length C1 and a first vertical length C2 and may have the same size. That is, the unit light-shielding patterns 530 arranged in the a rows and b columns have the same size (planar area) regardless of the distance from the light emitting device 200. In this case, the first horizontal length C1 and the first vertical length C2 may be approximately 300 μm or less. More specifically, the first horizontal length C1 and the first vertical length C2 may be approximately 250 μm or less. Also, the first horizontal length C1 and the first vertical length C2 may be the same within the above-mentioned range. When the first horizontal length C1 and the first vertical length C2 exceed approximately 300 μm, hot spots where light emitted from the light emitting device 200 concentrates can be effectively prevented. However, the area occupied by the unit light-shielding patterns 530 in the light-shielding layer 500 increases, thereby reducing the overall brightness of the lighting device 1000. Therefore, it is preferable that the size of the unit light-shielding patterns 530 satisfy the above-mentioned range in order to prevent the formation of hot spots and the reduction in the overall brightness of the device.

[0075] The lighting device 1000 may further include a protective layer (not shown). The protective layer is disposed on the light-blocking layer 500. The protective layer is the uppermost layer of the lighting device 1000 and serves to protect components disposed below it. The protective layer may include a light-transmitting material. Specifically, the protective layer may include a material that transmits light passing through its upper and lower surfaces. That is, the protective layer may be a light-transmitting layer. For example, the protective layer may include at least one of PET (Polyethylene terephthalate), PS (Polystyrene), PI (Polyimide), PEN (Polyethylene naphthalate), and PC (Polycarbonate). The protective layer has a predetermined thickness and can protect components disposed below it. For example, the protective layer may have a thickness of approximately 500 μm to approximately 3 mm. Specifically, the protective layer may have a thickness of approximately 800 μm to approximately 2.5 mm. If the thickness of the protective layer is less than approximately 500 μm, it is difficult to effectively protect the underlying components due to its relatively thin thickness. Furthermore, if the thickness of the protective layer exceeds approximately 3 mm, the overall thickness of the lighting device 1000 increases, resulting in reduced brightness. Furthermore, if the thickness of the protective layer exceeds approximately 3 mm, the flexibility of the lighting device 1000 decreases due to the thickness. In this case, the structures and shapes to which the lighting device 1000 can be applied are limited. Therefore, it is preferable that the thickness of the protective layer satisfy the above-mentioned range.

[0076] The lighting device 1000 according to the embodiment includes a light-shielding layer 500 including a light-shielding pattern region R2, and the light-shielding pattern region R2 may include a plurality of unit light-shielding patterns 530. The unit light-shielding patterns 530 have the same shape and size and are arranged at equal intervals, and the light-shielding pattern region R2 is arranged over an area set in a region corresponding to the light emitting element 200. As a result, the lighting device 1000 can effectively prevent the light emitted from the light emitting element 200 from concentrating, providing light with uniform brightness, and effectively preventing a decrease in the overall brightness of the light emitted by the light-shielding pattern region R2. Therefore, the lighting device 1000 according to the embodiment can provide a uniform line light source or surface light source.

[0077] 7 is another plan view of the light-shielding layer according to the embodiment. In the description using FIG. 7, the description of the same or similar components as those in the lighting device described above will be omitted, and the same reference numerals will be used for the same or similar components.

[0078] 7, the light-blocking layer 500 may include an optical film 510 and a plurality of light-blocking pattern regions R2 including a plurality of unit light-blocking patterns 530. The unit light-blocking patterns 530 are disposed on the optical film 510. The unit light-blocking patterns 530 are disposed on at least one of the upper and lower surfaces of the optical film 510.

[0079] The unit light blocking patterns 530 are spaced apart from one another on the optical film 510. The unit light blocking patterns 530 are spaced apart from one another in a first direction and a second direction as shown in FIG. 7. The intervals between the unit light blocking patterns 530 may vary. Specifically, the intervals between the unit light blocking patterns 530 may become smaller as the distance from the center of the light blocking pattern region R2 increases. For example, the interval between a first unit light blocking pattern 530a spaced apart from a central pattern 539, which overlaps with or is closest to the center of the light blocking pattern region R2, in the first direction is a first interval d1, and the interval between a second unit light blocking pattern 530b spaced apart from the central pattern 539 in the second direction is a second interval d2. The distance between the first unit light-shielding pattern 530a and the third unit light-shielding pattern 530c spaced apart in the first direction is a third distance d3, and the distance between the second unit light-shielding pattern 530b and the fourth unit light-shielding pattern 530d spaced apart in the second direction is a fourth distance d4. In this case, the first distance d1 and the second distance d2 may be approximately 300 μm or less, and the third distance d3 and the fourth distance d4 may be smaller than the first distance d1 and the second distance d2. While satisfying the above conditions, the first distance d1 and the second distance d2 may be the same, and the third distance d3 and the fourth distance d4 may be the same.

[0080] The plurality of unit light blocking patterns 530 are arranged in a rows by b columns (a and b are natural numbers equal to or greater than 2) and are disposed at predetermined positions. Specifically, the unit light blocking patterns 530 disposed in some of the first to a-th rows are disposed on the same line, while the unit light blocking patterns 530 disposed in the remaining rows are not disposed on the same line. Furthermore, the unit light blocking patterns 530 disposed in some of the first to b-th columns are disposed on the same line, while the unit light blocking patterns 530 disposed in the remaining columns are not disposed on the same line. For example, the unit light blocking patterns 530 disposed in the row that overlaps with the center of the light blocking pattern region R2 or is closest to the center among the a rows are disposed on the same line. That is, a virtual line connecting the centers of the unit light blocking patterns 530 in that row (the row that overlaps with the center or is closest to the center) may be parallel to the first direction. However, the unit light blocking patterns 530 arranged in rows (rows that do not overlap the center or are not arranged most adjacent to the center) other than the row (the row overlapping the center or arranged most adjacent to the center) among the a rows are not arranged on the same line. More specifically, among the unit light blocking patterns 530 arranged in each row, the unit light blocking pattern 530 arranged in the center region of the row may be positioned higher or lower than the other unit light blocking patterns 530 arranged in the same row. As a result, an imaginary line connecting the centers of the unit light blocking patterns 530 in the row is not parallel to the first direction.

[0081] In the b columns of the unit light blocking patterns 530, the unit light blocking patterns 530 arranged in the column overlapping or closest to the center of the light blocking pattern region R2 are arranged on the same line. That is, a virtual line connecting the centers of the unit light blocking patterns 530 in the column (the column overlapping or closest to the center) may be parallel to the second direction. However, the unit light blocking patterns 530 arranged in columns other than the b columns (the column not overlapping or closest to the center) are not arranged on the same line. More specifically, the unit light blocking pattern 530 arranged in the center region of each column may be located to the left or right of the remaining unit light blocking patterns 530 in the same column. As a result, the virtual line connecting the centers of the unit light blocking patterns 530 in the column is not parallel to the second direction.

[0082] 7, in the first row at the top, the unit light blocking pattern 530 located at the center of the first row is disposed higher than the remaining unit light blocking patterns 530. In addition, in the first column at the leftmost side, the unit light blocking pattern 530 located at the center of the column is disposed left of the remaining unit light blocking patterns 530. That is, the unit light blocking patterns 530 are disposed such that the spacing between them decreases as they move away from the light emitting device 200, and some unit light blocking patterns 530 disposed in the same row and / or column are not disposed on the same line as the remaining unit light blocking patterns 530.

[0083] The unit light-shielding patterns 530 may have a predetermined size. More specifically, each of the unit light-shielding patterns 530 arranged in the a row x b column arrangement may have a predetermined size. For example, the unit light-shielding patterns 530 arranged in the a row x b column arrangement may have the same size. That is, the center pattern 539, the first pattern 531, the second pattern 532, the third pattern 533, and the fourth pattern 534 arranged at different positions in the light-shielding pattern region R2 may have the same first horizontal length C1 and first vertical length C2 and the same area. The unit light-shielding patterns 530 arranged in the a row x b column arrangement may have the same size regardless of the distance from the light-emitting element 200.

[0084] The lighting device 1000 according to the embodiment includes a light-shielding layer 500 including a light-shielding pattern region R2, and the light-shielding pattern region R2 may include a plurality of unit light-shielding patterns 530. The unit light-shielding patterns 530 may have the same shape and size, and the distance between adjacent unit light-shielding patterns 530 may decrease as the unit light-shielding patterns 530 move away from the light emitting device 200. This prevents the light emitted from the light emitting device 200 from concentrating, thereby providing light with uniform brightness and preventing a decrease in the overall brightness of the light emitted by the light-shielding pattern region R2. Therefore, the lighting device 1000 according to the embodiment may provide a uniform line light source or surface light source.

[0085] 8 is a plan view of yet another light-shielding layer according to an embodiment. In the description using FIG. 8, the description of the same or similar components as those in the lighting device described above will be omitted, and the same reference numerals will be used for the same or similar components.

[0086] 8, the light-blocking layer 500 may include an optical film 510 and a plurality of light-blocking pattern regions R2 including a plurality of unit light-blocking patterns 530. The unit light-blocking patterns 530 are disposed on the optical film 510. The unit light-blocking patterns 530 are disposed on at least one of the upper and lower surfaces of the optical film 510.

[0087] The unit light-shielding patterns 530 are spaced apart from one another on the optical film 510. The unit light-shielding patterns 530 are spaced apart from one another in the first and second directions as shown in FIG. 8. The intervals between the unit light-shielding patterns 530 may vary. Specifically, the intervals between the unit light-shielding patterns 530 may become smaller as the distance from the center of the light-shielding pattern region R2 increases. For example, the interval between a first unit light-shielding pattern 530a spaced apart from a central pattern 539, which overlaps with or is closest to the center of the light-shielding pattern region R2, in the first direction is a first interval d1, and the interval between a second unit light-shielding pattern 530b spaced apart from the central pattern 539 in the second direction is a second interval d2. The first-direction interval between the third unit light-shielding pattern 530c arranged in the edge region of the light-shielding pattern region R2 and the unit light-shielding pattern 530 adjacent thereto in the first direction is a third interval d3, and the second-direction interval between the fourth unit light-shielding pattern 530d arranged in the edge region and the unit light-shielding pattern 530 adjacent thereto in the second direction is a fourth interval d4. In this case, the first interval d1 and the second interval d2 may be equal to or less than approximately 300 μm, or may be equal to or within the above range. The third interval d3 and the fourth interval d4 may be smaller than the first interval d1 and the second interval d2, respectively, or may be equal to each other.

[0088] The plurality of unit light blocking patterns 530 are arranged in a rows by b columns (a and b are natural numbers equal to or greater than 2) and are disposed at predetermined positions. Specifically, the unit light blocking patterns 530 disposed in some of the first to a-th rows are disposed on the same line, while the unit light blocking patterns 530 disposed in the remaining rows are not disposed on the same line. Also, the unit light blocking patterns 530 disposed in some of the first to b-th columns are disposed on the same line, while the unit light blocking patterns 530 disposed in the remaining columns are not disposed on the same line. For example, the unit light blocking patterns 530 disposed in the row and column that overlap with or are closest to the center of the light blocking pattern region R2 are disposed on the same line. Specifically, the centers of the unit light blocking patterns 530 disposed in the row and column are disposed on the same line in the first and second directions, respectively. However, the unit light blocking patterns 530 disposed in rows and columns other than the row and column (rows and columns that do not overlap with or are not closest to the center) are not disposed on the same line. In more detail, some of the unit light blocking patterns 530 arranged in each row and column may be located above, below, to the left, or to the right of the remaining unit light blocking patterns 530 arranged in the same row and column, so that an imaginary line connecting the centers of the unit light blocking patterns 530 in the row and column is not parallel to the first or second direction.

[0089] The plurality of unit light-shielding patterns 530 may have a predetermined size. More specifically, each of the unit light-shielding patterns 530 arranged in the a rows x b columns may have a predetermined size. For example, the size of the unit light-shielding patterns 530 may decrease as it moves away from the region overlapping with the optical axis of the light-emitting device 200. That is, in the light-shielding pattern region R2, the center pattern 539 may have a first horizontal length C1 and a first vertical length C2 and may be larger than the first pattern 531, the second pattern 532, the third pattern 533, and the fourth pattern 534. In addition, the first pattern 531, the second pattern 532, the third pattern 533, and the fourth pattern 534 arranged at the edges of the light-shielding pattern region R2 may have a second horizontal length C3 and a second vertical length C4 and may have the smallest size (planar area) among the plurality of unit light-shielding patterns 530.

[0090] The lighting device 1000 according to the embodiment includes a light-shielding layer 500 including a light-shielding pattern region R2, and the light-shielding pattern region R2 may include a plurality of unit light-shielding patterns 530. The unit light-shielding patterns 530 may decrease in size (i.e., width and length) as they are further away from the light emitting device 200, and the spacing between adjacent unit light-shielding patterns 530 may decrease as they are further away from the light emitting device 200. This allows the lighting device 1000 to prevent light emitted from the light emitting device 200 from concentrating, thereby providing light with uniform brightness and preventing a decrease in the overall brightness of the light emitted by the light-shielding pattern region R2. Therefore, the lighting device 1000 according to the embodiment may provide a uniform line light source or surface light source.

[0091] Fig. 9 is a cross-sectional view of a lighting device according to an embodiment including a half mirror layer, and Fig. 10 is another cross-sectional view of the half mirror layer according to an embodiment. In the description using Figs. 9 and 10, the description of the same or similar components as those in the lighting device described above will be omitted, and the same reference numerals will be used for the same or similar components.

[0092] 9 and 10, the lighting device 1000 according to the embodiment may further include a half mirror layer 600. The half mirror layer 600 is disposed on the light-shielding layer 500. If the lighting device 1000 includes the protective layer, the half mirror layer 600 is disposed between the light-shielding layer 500 and the protective layer. The half mirror layer 600 has a planar area corresponding to that of the light-shielding layer 500 and is a semi-transparent mirror. For example, the half mirror layer 600 may be formed by coating or depositing a thin film of metal such as aluminum (Al), nickel (Ni), titanium (Ti), or copper (Cu) on a transparent substrate.

[0093] The half mirror layer 600 may have a predetermined thickness. For example, the thickness of the half mirror layer 600 is uniform throughout. Alternatively, the thickness of the half mirror layer 600 may be thicker in an area vertically overlapping with the light emitting device 200 than in an area where the half mirror layer 600 does not overlap. Specifically, the thickness of the half mirror layer 600 in an area where a hot spot is formed may be thicker than the thickness of an area where a hot spot is not formed. For example, referring to FIG. 10 , the half mirror layer 600 may include a protruding pattern 610 disposed in an area vertically overlapping with the light emitting device 200. The protruding pattern 610 may be formed by coating or depositing the metal relatively thickly and has a width greater than the horizontal width of the light emitting device 200. The protruding pattern 610 may also have various cross-sectional shapes. For example, the cross-sectional shape of the protrusion pattern 610 may have various shapes such as a polygon such as a square (FIG. 10(a)), a triangle (FIG. 10(b)), or a hemisphere (FIG. 10(c)).

[0094] The lighting device 1000 according to the embodiment may have improved aesthetics due to the half mirror layer 600 having a set transmittance and reflectance. More specifically, when the lighting device 1000 emits light, light emitted from the light emitting device 200 passes through the half mirror layer 600 and is provided to the outside. When the lighting device 1000 does not emit light, the color of the half mirror layer 600 is visible from the outside, thereby improving aesthetics. For example, when the lighting device 1000 does not emit light, the half mirror layer 600 is provided in the same color as the surrounding area of ​​the lighting device 1000. In this case, the lighting device 1000 may have a hidden effect that minimizes external visibility due to the half mirror layer 600.

[0095] The half mirror layer 600 includes the protrusion patterns 610, which can more effectively prevent the light emitted from the light emitting device 200 from concentrating. As a result, the light emitted through the half mirror layer 600 can have uniform brightness, and the lighting device 1000 can provide a line light source or a surface light source with improved light characteristics.

[0096] 11 and 12 are diagrams illustrating lighting devices according to embodiments that have shapes bent in various directions. In the description using Figs. 11 and 12, the description of the same or similar components as those of the lighting devices described above will be omitted, and the same reference numerals will be used for the same or similar components.

[0097] 11 and 12, the light emitting devices 200 are spaced apart and arranged in c rows and d columns (c and d are different natural numbers). In this case, the first resin layer 410 covering the light emitting devices 200 may have major and minor axes corresponding to the c rows and d columns, and the lighting device 1000 may have major and minor axes corresponding to the first resin layer 410. The lighting device 1000 may be provided in a linear shape extending in one direction. For example, the major and minor axes of the first resin layer 410 may be linear and extend in a first direction (x-axis direction) without any curvature. The lighting device 1000 according to the embodiment may be provided in a curved shape in at least one of the first to third directions (x-, y-, and z-axis directions) as shown in FIGS. 11 and 12. For example, at least one of the major and minor axes of the first resin layer 410 may include a curvature.

[0098] 11, the major axis of the first resin layer 410 may have a curvature. Specifically, the upper and lower surfaces of the first resin layer 410 may have curved surfaces having a predetermined curvature. As a result, the lighting device 1000 may be provided in a shape curved in the vertical direction (z-axis direction; third direction).

[0099] 12, the major axis of the second resin layer 420 may have a curvature. More specifically, both side surfaces of the first resin layer 410 may have curved surfaces with a predetermined curvature. As a result, the lighting device 1000 may be provided in a shape curved in a horizontal direction. The lighting device 1000 according to the embodiment may be provided in various shapes including a major axis and a minor axis, and the major axis and the minor axis may be provided in a shape including a straight line or a curved line. As a result, the lighting device 1000 may be provided in a straight line, a curved line, or the like on a substrate having various shapes, thereby providing a line light source or a surface light source with uniform brightness.

[0100] 13 and 14 are cross-sectional views of a lighting device according to an embodiment further including a housing. In the description using Fig. 13 and Fig. 14, the description of the same or similar components as those of the lighting device described above will be omitted, and the same reference numerals will be used for the same or similar components.

[0101] 13 and 14 , the lighting device 1000 according to the embodiment may further include a housing 700. The housing 700 may include a material having a predetermined reliability. For example, the housing 700 may include a non-metallic material such as a metal material, a resin, or a ceramic. The housing 700 has an open top and includes an accommodation space therein. Some components of the lighting device 1000 are disposed in the accommodation space of the housing 700. For example, the reflective layer 300, the first resin layer 410, the light emitting element 200, the transparent substrate 100, the second resin layer 420, and the light-blocking layer 500 are disposed in the accommodation space. In addition, if the lighting device 1000 further includes a half mirror layer 600 as shown in FIG. 9 , the half mirror layer 600 is further disposed in the accommodation space.

[0102] The housing 700 is disposed to surround the components disposed within the accommodation space. Specifically, the housing 700 is disposed to surround the lower surface of the reflective layer 300, and side surfaces of the reflective layer 300, the first resin layer 410, the transparent substrate 100, the second resin layer 420, the light-shielding layer 500, and the half mirror layer 600. For example, the housing 700 is disposed to be in direct contact with the lower surface of the reflective layer 300, and side surfaces of the reflective layer 300, the first resin layer 410, the transparent substrate 100, the second resin layer 420, the light-shielding layer 500, and the half mirror layer 600. As a result, the lighting device 1000 can provide a uniform linear light source or a surface light source in the open upper region of the housing 700. Furthermore, since the housing 700 is disposed to surround the above-mentioned components, the lighting device 1000 can have improved reliability.

[0103] The housing 700 may include a material with excellent reflectivity or may be provided in a color with excellent light reflectivity. As a result, the housing 700 can prevent light loss by reflecting light emitted through the side surface of the first resin layer 410. In addition, the housing 700 can maximize the amount of light emitted toward the open upper side of the housing 700 by reflecting light emitted through the side surface of the substrate 100, the side surface of the second resin layer 420, the side surface of the light-shielding layer 500, and the side surface of the half mirror layer 600.

[0104] If the housing 700 has a light reflectance equal to or greater than a predetermined value, the reflective layer 300 may be omitted as shown in Fig. 14. That is, the light emitting surface of the light emitting device 200 is disposed facing the bottom surface of the receiving space, and the light emitted from the light emitting device 200 is reflected by the bottom surface and provided toward the upper side of the first resin layer 410. In this case, the lighting device 1000 can be provided in a slimmer shape.

[0105] 15 to 19 are diagrams illustrating an example in which a lamp including an illumination device according to an embodiment is applied to a moving mechanism, for example, a vehicle. Specifically, FIG. 15 is a top view of a vehicle to which a lamp having the illumination device is applied. Also, FIG. 16 is an example in which an illumination device according to an embodiment is disposed at the front of a vehicle, and FIG. 17 is an example in which an illumination device according to an embodiment is disposed at the rear of a vehicle. Also, FIGS. 18 and 19 are examples for explaining that an illumination device according to an embodiment operates as a hidden lamp at the front of a vehicle.

[0106] 15 to 19, the lighting device 1000 according to the embodiment can be applied to a lamp of a vehicle 2000. One or more of the lamps are disposed at at least one of the front, rear, and side of the vehicle 2000. The lighting device 1000 can be provided in various shapes, such as curved or straight, and can be applied to lamps disposed in various areas of the vehicle 2000. For example, referring to FIG. 16, the lamp can be applied to a front lamp 2100 of the vehicle 2000. The front lamp 2100 can include at least one lamp module including a first cover member 2110 and the lighting device 1000. The first cover member 2110 can accommodate the lighting device 1000. The front lamp 2100 can provide multiple functions by controlling the driving timing of the lighting device 1000 included in at least one lamp module. For example, the front lamp 2100 may include a first lamp module 2120 and a third lamp module 2130 that provide at least one function of a headlight, a turn signal light, a daytime running light, a high beam, a low beam, and a fog lamp by emitting light from the lighting device 1000. In addition, the front lamp 2100 may provide additional functions such as a welcome light or a celebration effect when a driver opens a vehicle door.

[0107] 17, the lamp may be applied to a rear lamp 2200 of a vehicle. The rear lamp 2200 may include at least one lamp module including a second cover member 2210 and the lighting device 1000. The second cover member 2210 may accommodate the lighting device 1000. The rear lamp 2200 may provide multiple functions by controlling the driving timing of the lighting device 1000 included in at least one lamp module. For example, the rear lamp 2200 may include a second lamp module 2220 that provides at least one function of a side light, a brake light, and a turn signal light by emitting light from the lighting device 1000. In this case, the lamp module included in at least one of the front lamp 2100 and the rear lamp 2200 may be provided with a color that is set depending on whether it is on or off.

[0108] 18 and 19, the front lamp 2100 may further include a fourth lamp module 2140. The lighting device 1000 included in the fourth lamp module 2140 may include the above-described half mirror layer 600, and the half mirror layer 600 may have a color corresponding to the color of the vehicle 2000. The fourth lamp module 2140 may emit or not emit light depending on the applied power. For example, as shown in FIG. 18, the fourth lamp module 2140 may be operated in an on state to emit light from the light emitting device 200. In this case, the light emitted from the light emitting device 200 passes through the half mirror layer 600 and is visible outside the fourth lamp module 2140. For example, the fourth lamp module 2140 may emit amber light to function as a turn signal light.

[0109] 19, the fourth lamp module 2140 may be in an off state in which the light emitting device 200 does not emit light. In this case, the light emitting device 200 does not emit light, and the half mirror layer 600 may reflect light of a color that is the same as or corresponds to the color of the vehicle 2000. As a result, a color that is the same as or similar to the color of the vehicle 2000 is visible from outside the fourth lamp module 2140.

[0110] In this embodiment, when the fourth lamp module 2140 is turned on, a uniform line light source or surface light source with little luminance deviation can be provided. Also, when the fourth lamp module 2140 is turned off, the fourth lamp module 2140 can have a hidden effect, which can be invisible or minimized from being visible from the outside. Also, the lighting device 1000 can be provided in various shapes, such as a straight line or a curved line, and can be applied to various curved areas of the vehicle 2000.

[0111] The features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Furthermore, the features, structures, effects, etc. exemplified in each embodiment may be combined or modified with other embodiments by a person skilled in the art to which the embodiment belongs. Therefore, such combinations and modifications should be construed as falling within the scope of the present invention. Furthermore, while the above description focuses on the embodiments, these are merely examples and do not limit the present invention. A person skilled in the art to which the present invention belongs may make various modifications and applications not exemplified above within the scope of the present embodiments, provided that such modifications and applications do not deviate from the essential characteristics of the present embodiments. For example, each component specifically presented in the embodiments may be modified. Such modifications and variations should be construed as falling within the scope of the present invention, as defined by the appended claims.

Claims

1. A reflective layer; a resin layer disposed on the reflective layer; a transparent substrate disposed on the resin layer and including an electrode layer; a plurality of light-emitting elements disposed between the resin layer and the transparent substrate; a light-shielding layer disposed on the transparent substrate; the resin layer seals the plurality of light-emitting elements arranged on the lower surface of the transparent substrate; The electrode layer is a first pattern region disposed adjacent to the light emitting element; a second pattern area disposed outside the first pattern area and having a pattern of a different size from that of the first pattern area; the light-shielding layer includes a plurality of light-shielding pattern regions, the light-blocking pattern region overlaps the first pattern region in a vertical direction and has an area larger than an area of ​​the first pattern region; the reflective layer includes a plurality of reflective pattern areas; The lighting device, wherein the plurality of light-emitting elements do not overlap with the reflective pattern area but overlap with the light-blocking pattern area in the vertical direction.

2. the light blocking pattern region includes a plurality of unit light blocking patterns, The lighting device according to claim 1 , wherein a portion of the light-blocking pattern region vertically overlaps with the second pattern region.

3. The lighting device according to claim 1 , wherein the area of ​​the light-blocking pattern region is larger than the area of ​​the first pattern region by no more than 1.4 times.

4. The lighting device according to claim 1 , wherein the light-shielding layer includes an optical film spaced apart from the transparent substrate.

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