Lighting device and lighting module comprising same

Abstract

A lighting device according to an embodiment may comprise: a substrate having a light source disposed thereon; a partition wall spaced apart from the substrate; and a first diffusion layer disposed on the light source inside the partition wall. The first diffusion layer can include a 1-1 diffusion layer disposed on the light source, and a 1-2 diffusion layer disposed outside the light source. A first concentration of a first diffusing agent of the 1-1 diffusion layer can be thicker than a second concentration of a second diffusing agent of the 1-2 diffusion layer.

Description

Lighting device and lighting module including the same

[0001] An embodiment of the invention relates to a lighting device and a lighting module including the same.

[0002] Recently, lighting devices composed of hundreds or thousands of small LEDs are being applied to automotive lighting modules, and various pixel lighting technologies are being proposed, particularly for automotive lighting modules.

[0003] For example, since pixel lighting technology is applied to lighting devices to allow each LED to be controlled independently, it is possible to adjust the lighting according to the surrounding environment or create various lighting effects to produce unique signature lighting.

[0004] Meanwhile, according to the vehicle lighting module based on internal technology, a resin layer that diffuses light is provided to realize the point light source of an LED as a surface light source.

[0005] However, as the size of the lighting module increases, there is a problem in that it is difficult to ensure a slim thickness due to the resin layer, and the vehicle's fuel efficiency may decrease due to the weight of the resin layer.

[0006] Specifically, according to the vehicle lighting module based on the internal technology, each pixel is partitioned by a predetermined partition placed on a substrate, and a single or multiple LEDs are placed on the substrate. Meanwhile, a plurality of silicon layers are arranged to realize the light of the point light source LED as a surface light source. The silicon layer includes a first silicon layer without diffuser beads on the lower side, and a second silicon layer that is thinner than the first silicon layer, includes diffuser beads, and is placed on the first silicon layer.

[0007] Meanwhile, in the automotive lighting module of internal technology, the more silicone is used, the longer the dispensing and heat curing process times become. In the case of a method where a bulkhead structure is assembled after silicone layer molding, the higher the number of layers, the greater the difficulty of assembly. Additionally, in automotive lighting modules, silicone accounts for a large portion of the material cost of the lighting device, which may be disadvantageous in terms of price competitiveness.

[0008] In addition, while a thinner light source is advantageous for utilizing pixel lighting technology in various ways, there is a problem in that it becomes difficult to achieve a slim thickness due to the silicone-containing resin layer as the size of the lighting module increases.

[0009] In addition, the pixel lighting device of the internal technology has a problem in which light uniformity is degraded due to a difference in brightness between the center and the periphery of the light source.

[0010] One of the technical challenges of the embodiments is to provide a lighting device and a lighting module including the same that can improve light uniformity while reducing the thickness of the lighting module.

[0011] The technical problems of the embodiments are not limited to those described in this section and include those that can be understood from the description of the invention.

[0012] A lighting device according to an embodiment may include a substrate on which a light source is disposed, a partition wall disposed spaced apart on the substrate, and a first diffusion layer disposed on the light source inside the partition wall.

[0013] The first diffusion layer may include a first-1 diffusion layer disposed on the light source and a first-2 diffusion layer disposed on the outer edge of the light source.

[0014] The first concentration of the first spreading agent in the above 1-1 diffusion layer may be higher than the second concentration of the second spreading agent in the above 1-2 diffusion layer.

[0015] The above 1-1 diffusion layer is arranged to overlap with the light source above and below, and the above 1-2 diffusion layer may not overlap with the light source above and below.

[0016] The embodiment may further include a pattern mask disposed on the partition wall and the first diffusion layer.

[0017] Additionally, the embodiment may further include a reflector disposed on the substrate, which includes a hole through which the light source passes.

[0018]

[0019] Additionally, the lighting device according to the embodiment may include a substrate on which a light source is disposed, a partition wall disposed spaced apart on the substrate, and a second diffusion layer disposed on the light source inside the partition wall.

[0020] The second diffusion layer may include a second-1 diffusion layer disposed on the light source and having a curved surface, and a second-2 diffusion layer disposed on the outer edge of the light source.

[0021] The first concentration of the second spreading agent in the above 2-1 diffusion layer may be higher than the second concentration of the second spreading agent in the above 2-2 diffusion layer.

[0022] The above 2-1 diffusion layer is arranged to overlap with the light source above and below, and the above 2-2 diffusion layer may not overlap with the light source above and below.

[0023] Additionally, the embodiment may further include a pattern mask disposed on the partition wall and the second diffusion layer.

[0024] Additionally, the embodiment may further include a reflector disposed on the substrate, which includes a hole through which the light source passes.

[0025] In addition, the lighting module according to the embodiment may include any one of the lighting devices.

[0026] According to the lighting device and lighting module including the same according to the embodiment, there is a technical effect of improving light uniformity while reducing the thickness of the lighting module.

[0027] For example, referring to FIG. 5, in the embodiment, the first concentration of the first spreading agent of the first diffusion layer (351a) may be higher than the second concentration of the second spreading agent of the first diffusion layer (351b).

[0028] According to the embodiment, by controlling the first concentration of the first diffuser of the first diffusion layer (351a) disposed on the light source (150) to be higher than the second concentration of the second diffuser of the first diffusion layer (351b), the light of the light source (150) can be prevented from emitting the strongest light at a hot spot, thereby improving light uniformity and providing a technical effect.

[0029] In addition, according to the embodiment, the second concentration of the second diffuser in the first-second diffusion layer (351b) that does not overlap with the light source (150) and the upper and lower layers is controlled to be lower than the first concentration of the first diffuser in the first-first diffusion layer (351a), thereby enabling the overall thickness of the first diffusion layer (351) to be slim and providing a technical effect of reducing the weight of the resin layer and the diffuser.

[0030] Also, referring to FIG. 6, the lighting module according to the embodiment can ensure light uniformity due to the pattern of the pattern mask (400) and at the same time prevent the problem of reduced brightness. In addition, the lighting module according to the embodiment can have a high contrast ratio due to the pattern of the pattern mask (400).

[0031] Also, referring to FIG. 7, the second-1 diffusion layer (352a) of the second diffusion layer (352) of the embodiment has a curved shape, so that the light emitted from the light source (150) is diffused and reflected by the curved second-1 diffusion layer (352a), and the light uniformity of the lighting module (2) can be improved. For example, the reflectance reflected in the direction of the light source (150), the reflection part (200), and the partition wall (300) by the curved second-1 diffusion layer (352a) can be increased. As a result, the light uniformity of the lighting module (2) can be improved.

[0032] FIG. 1 is an exemplary diagram showing a vehicle (1) according to an embodiment.

[0033] FIG. 2 is an exemplary diagram of a lighting module (2) according to an embodiment.

[0034] FIG. 3 is an example of a lighting module with a letter or symbol displayed.

[0035] FIG. 4 is an enlarged view of the lighting module (2) of the pixel lighting device according to an embodiment.

[0036] FIG. 5 is a cross-sectional view of a first lighting device (10A) according to an embodiment.

[0037] FIG. 6 is a cross-sectional view of a second lighting device (10B) according to an embodiment.

[0038] FIG. 7 is a cross-sectional view of a third lighting device (10C) according to an embodiment.

[0039] FIG. 8 is a cross-sectional view of a fourth lighting device (10D) according to an embodiment.

[0040] Hereinafter, preferred embodiments of the invention will be described in detail with reference to the attached drawings.

[0041] The technical concept of the present invention is not limited to some of the described embodiments but can be implemented in various different forms, and within the scope of the technical concept of the present invention, one or more of the components among the embodiments may be selectively combined or substituted.

[0042] In addition, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a sense that is generally understood by those skilled in the art to which the present invention belongs, unless explicitly and specifically defined otherwise. Terms that are commonly used, such as terms defined in advance, may be interpreted in consideration of their meaning in the context of the relevant technology.

[0043] Furthermore, the terms used in the examples are for the purpose of describing the examples and are not intended to limit the invention.

[0044] In this specification, the singular form may include the plural form unless specifically stated otherwise in the text, and when described as "at least one of A and B and C (or more than one)," it may include one or more of all combinations that can be formed from A, B, and C. Additionally, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are used merely to distinguish the components from other components and do not determine the essence, order, or sequence of the corresponding components.

[0045] And, where it is stated that a component is 'connected', 'combined', or 'joined' to another component, this may include not only cases where the component is directly connected, combined, or joined to the other component, but also cases where it is 'connected', 'combined', or 'joined' due to another component located between the component and the other component.

[0046] Furthermore, when described as being formed or placed "above or below" each component, "above" or "below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or placed between the two components. Additionally, when expressed as "above or below," it may include the meaning of a downward direction as well as an upward direction relative to a single component.

[0047] The lighting device according to the invention can be applied to various lamp devices that require lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices. For example, when applied to vehicle lamps, it can be applied to headlamps, side mirrors, side marker lights, fog lights, tail lamps, brake lights, daytime running lights, vehicle interior lighting, door scuffs, rear combination lamps, backup lamps, etc.

[0048] The lighting device of the present invention is applicable to indoor and outdoor advertising devices, display devices, and various types of electric vehicles. Furthermore, it is applicable to all lighting-related or advertising-related fields that are currently developed and commercialized or that can be implemented through future technological advancements.

[0049]

[0050] (Example)

[0051] FIG. 1 is an exemplary diagram showing a vehicle (1) according to an embodiment, FIG. 2 is an exemplary diagram showing a lighting module (2) according to an embodiment, FIG. 3 is an exemplary diagram of a lighting module with a character or symbol displayed, and FIG. 4 is an enlarged view of a lighting module (2) of a pixel lighting device according to an embodiment.

[0052]

[0053] Referring to FIG. 1, the lighting module (2) according to the embodiment may be positioned adjacent to the headlights and rear lamps of the vehicle (1). However, it is not limited thereto and may be positioned inside or outside the vehicle to visually display characters or shapes. As another example, the lighting module (2) may be applied in place of the headlights or rear lamps of the vehicle (1) and may display character or shape signals in the headlights and rear lamps.

[0054] Referring to FIG. 2, the lighting module (2) according to the embodiment may include a plurality of lighting devices. The lighting devices may include lighting devices (10).

[0055] Each of the above lighting devices (10) can have an independent color or brightness. As a result, as shown in FIG. 3, the lighting module (2) can display characters or shapes, and can also express them as dynamic signals, etc.

[0056] Referring to FIG. 4, the lighting device (10) of the pixel lighting device implementing the lighting module (2) is partitioned by a partition (300), and a plurality of light sources (150) including LEDs form a light-emitting cluster to form a larger pixel. At this time, each of the light-emitting clusters may also have an independent color or brightness.

[0057]

[0058] FIG. 5 is a cross-sectional view of a first lighting device (10A) according to an embodiment, and may be a cross-sectional view along line A1-A2 of FIG. 4.

[0059] Referring to FIG. 5, the first lighting device (10A) according to the embodiment may include a substrate (100), a reflector (200), a partition (300), and a first diffusion layer (351).

[0060] The substrate (100) may include a printed circuit board (PCB). The substrate (100) may include, for example, at least one of a resin-based printed circuit board (PCB), a flexible PCB, a ceramic PCB, and a metal core PCB.

[0061] The horizontal length and vertical length of the above substrate (100) may be formed to be the same. That is, it may have a square shape. However, it is not limited to this, and the horizontal length or vertical length may be formed to be different lengths.

[0062]

[0063] A light source (150) may be placed on the above substrate (100).

[0064] The light source (150) may include a light-emitting diode (LED). However, it is not limited thereto and may include a device that emits light in any form. For example, the light-emitting diode (LED) may include various types of LEDs such as a package having an LED chip and a transparent resin molding member placed on the LED chip, a Flip chip, a Chip Scale Package (CSP), a Chip on Board (COB), a Land Grid Array (LGA), and Surface Mount Technology (SMT). The light source (150) may emit at least one of Red, Green, and Blue colors. Additionally, the light source (150) may further include White color light. Additionally, the light source (150) may emit various colors of light such as cyan and amber.

[0065] One or multiple light sources (150) may be arranged. The light source (150) may be placed in the center of a single lighting device (10A). However, the position of the light source (150) is not limited thereto and may be placed in a position to ensure light uniformity of the lighting device (10A). For example, the light source (150) may be placed at the edge of the lighting device (10A). However, the present invention will focus on an example in which the light source (150) is placed in the center of the lighting device (10A).

[0066]

[0067] The reflective portion (200) may be disposed on the substrate (100). The reflective portion (200) may include a hole (not shown) through which the light source (150) passes. The shape of the hole may be the same as or different from the shape of the light source (150). The size of the hole may be formed to be equal to or slightly larger than the size of the light source (150). The reflective portion (200) may reflect light. The reflective portion (200) may include a pattern for reflecting light. For example, the reflective portion (200) may include a pattern with an uneven shape. The reflective portion (200) may include a metal or non-metal material capable of reflecting light. For example, the reflective portion (200) may include at least one of Al, Ag, and Au, or at least one of MgF2, Al2O3, SiO, SiO2, TiO2+ZrO2, TiO2, and ZrO2.

[0068] The height (h2) of the reflection part (200) is formed to be lower than the height (h1) of the light source (150) so that light emitted from the light source (150) can be reflected in the direction of the pattern mask (400).

[0069]

[0070] The above partition (300) may be disposed on the substrate (100). For example, the above partition (300) may be disposed on the reflective portion (200). The above partition (300) may form the outer surface of the lighting device (10A). The above partition (300) may be disposed to surround the light source (150). The inner surface of the above partition (300) may be formed vertically with respect to the upper surface of the substrate (100), but is not limited thereto. For example, the inner surface of the above partition (300) may form an obtuse angle with respect to the upper surface of the substrate (100) (not shown). As a result, light emitted from the light source (150) may be reflected from the inner surface of the above partition (300) in the direction of the pattern mask (400), thereby improving the light reflectivity.

[0071]

[0072] The above partition (300) may include a silicone material, but is not limited thereto, and may include a metal material. For example, the above partition (300) may include PDMS (Polydimethylsiloxane), TPU (Thermoplastic Polyurethane), etc. The above partition (300) may include a white color to improve light reflectivity. However, it is not limited thereto, and may include other colors other than white. As another example, the above partition (300) may be formed of a transparent material through which light is transmitted.

[0073] The inner surface of the above partition (300) can reflect light emitted from the light source (150) and light reflected from the above reflection part (200).

[0074] Additionally, the above partition (300) can reflect the reflected light back. An additional pattern may be placed on the inner surface of the above partition (300) to improve reflectivity.

[0075]

[0076] According to an embodiment, the first diffusion layer (351) may be disposed inside the partition wall (300). The first diffusion layer (351) may be formed by including a layer containing resin in a portion of the area inside the partition wall (300).

[0077] The first diffusion layer (351) may include a first-1 diffusion layer (351a) disposed on the light source (150) and a first-2 diffusion layer (351b) disposed on the outer edge of the light source (150).

[0078] The above-mentioned first-1 diffusion layer (351a) may include a resin layer and a first diffusion agent of a first concentration. For example, the above-mentioned first-1 diffusion layer (351a) may include a resin layer made of a transparent material such as silicone or epoxy. In addition, the first diffusion agent of the above-mentioned first-1 diffusion layer (351a) may be Al2O3, TiO2, It may include at least one of SiO2, ZnO, and ZrO2.

[0079] Additionally, the first-second diffusion layer (351b) may include a resin layer and a second diffusion agent of a second concentration. For example, the first-second diffusion layer (351b) may include a resin layer made of a transparent material such as silicone or epoxy. Additionally, the second diffusion agent of the first-second diffusion layer (351b) may be Al2O3, TiO2, It may include at least one of SiO2, ZnO, and ZrO2.

[0080]

[0081] In the example, the first concentration of the first spreading agent in the first-1 diffusion layer (351a) may be higher than the second concentration of the second spreading agent in the first-2 diffusion layer (351b).

[0082] According to the embodiment, by controlling the first concentration of the first diffuser of the first diffusion layer (351a) disposed on the light source (150) to be higher than the second concentration of the second diffuser of the first diffusion layer (351b), the light of the light source (150) can be prevented from emitting the strongest light at a hot spot, thereby improving light uniformity and providing a technical effect.

[0083] In addition, according to the embodiment, the second concentration of the second diffuser in the first-second diffusion layer (351b) that does not overlap with the light source (150) and the upper and lower layers is controlled to be lower than the first concentration of the first diffuser in the first-first diffusion layer (351a), thereby enabling the overall thickness of the first diffusion layer (351) to be slim and providing a technical effect of reducing the weight of the resin layer and the diffuser.

[0084] Accordingly, the lighting device and the lighting module including the same according to the embodiment have the technical effect of improving light uniformity while reducing the thickness of the lighting module.

[0085]

[0086] In the embodiment, the process for forming the first diffusion layer (351) may be carried out by forming the first-1 diffusion layer (351a) as a first molding process on the light source (150) and forming the first-2 diffusion layer (351b) as a second molding process, but is not limited thereto and may be carried out in a different order.

[0087]

[0088]

[0089] Next, FIG. 6 is a cross-sectional view of a second lighting device (10B) according to an embodiment.

[0090] The second lighting device (10) according to the embodiment may adopt the technical features of the first lighting device (10) according to the embodiment, and the technical features of the second lighting device (10) will be described below.

[0091] Referring to FIG. 6, the second lighting device (10B) according to the embodiment may include a substrate (100), a reflector (200), a partition (300), and a first diffusion layer (351).

[0092] Additionally, the second lighting device (10B) according to the embodiment may further include a pattern mask (400) disposed on the first diffusion layer (351).

[0093] The pattern mask (400) may include a material with high reflectivity so that the surface facing the light source (150) can reflect light. For example, the pattern mask (400) may be formed from an alloy containing one of Cu, Ag, and Al, or at least one of these. The pattern mask (400) may be formed in the shape of a thin plate. The pattern mask (400) may be bendable.

[0094] Additionally, the pattern mask (400) may have a pattern formed with a plurality of through holes (not shown). The pattern may have a plurality of through holes.

[0095] Light emitted from the light source (150) can be emitted to the outside through the through hole. In the part where the through hole is not formed, the light from the light source (150) can be reflected. Additionally, the light reflected from the part where the through hole is not formed can be reflected again toward the pattern mask (400) from the reflective part (200) or the partition (300). By reflecting light from the part where the through hole is not formed and reflecting it again from the reflective part (200) or the partition (300), the light uniformity of the lighting module (2) can be improved and a decrease in brightness can be prevented.

[0096] The lighting module according to the embodiment can secure light uniformity and prevent the problem of reduced brightness due to the pattern of the pattern mask (400) organically combined with the first diffusion layer (351). In addition, the lighting module according to the embodiment can have a high contrast ratio due to the pattern of the pattern mask (400).

[0097]

[0098] Next, FIG. 7 is a cross-sectional view of a third lighting device (10C) according to an embodiment.

[0099] The third lighting device (10) according to the embodiment may adopt the technical features of the first lighting device (10A) or the second lighting device (10B) according to the embodiment, and the technical features of the third lighting device (10C) will be described below.

[0100] Referring to FIG. 7, the third lighting device (10C) according to the embodiment may include a substrate (100), a reflector (200), a partition (300), and a second diffusion layer (352).

[0101] The second diffusion layer (352) has a curved shape and can be formed by including a layer containing resin in a portion of the inner area of ​​the partition wall (300).

[0102] The second diffusion layer (352) may have a curved shape and may include a second-1 diffusion layer (352a) disposed on the light source (150) and a second-2 diffusion layer (352b) disposed on the outer edge of the light source (150).

[0103] The second-1 diffusion layer (352a) may have a curved shape, for example, a parabolic shape, but is not limited thereto.

[0104] The second-1 diffusion layer (352a) has a curved shape, so that the light emitted from the light source (150) is diffused and reflected by the curved second-1 diffusion layer (352a), and the light uniformity of the lighting module (2) can be improved.

[0105] For example, the reflectance reflected in the direction of the light source (150), the reflector (200), and the partition wall (300) can be increased by the curved second-first diffusion layer (352a). As a result, the light uniformity of the lighting module (2) can be improved.

[0106] In addition, in the embodiment, the first concentration of the first spreading agent of the second-1 diffusion layer (352a) may be higher than the second concentration of the second spreading agent of the second-2 diffusion layer (352b).

[0107] According to the embodiment, by controlling the first concentration of the first diffuser of the second-1 diffusion layer (352a) disposed on the light source (150) to be higher than the second concentration of the second diffuser of the second-2 diffusion layer (352b), the light of the light source (150) can be prevented from emitting the strongest light at a hot spot, thereby improving light uniformity and providing a technical effect.

[0108] In addition, according to the embodiment, the second concentration of the second diffuser in the second-2 diffusion layer (352b), which does not overlap with the light source (150) and the upper and lower layers, is controlled to be lower than the first concentration of the first diffuser in the second-1 diffusion layer (352a), thereby enabling the overall thickness of the second diffusion layer (352) to be slim and providing a technical effect of reducing the weight of the resin layer and the diffuser.

[0109]

[0110] In the embodiment, the process for forming the second diffusion layer (352) may include a process of forming the second-2 diffusion layer (352b) by a first molding process on the outer edge of the light source (150) and a process of forming the second-1 diffusion layer (352a) by a second molding process, but is not limited thereto.

[0111]

[0112] Next, FIG. 8 is a cross-sectional view of a fourth lighting device (10D) according to an embodiment.

[0113] The fourth lighting device (10) according to the embodiment may adopt the technical features of the first lighting device (10A), the second lighting device (10B), or the third lighting device (10C) according to the embodiment, and the technical features of the fourth lighting device (10D) will be described below.

[0114] Referring to FIG. 8, the fourth lighting device (10D) according to the embodiment may include a substrate (100), a reflective part (200), a partition (300), and a second diffusion layer (352), and the fourth lighting device (10D) according to the embodiment may further include a pattern mask (400) disposed on the second diffusion layer (352).

[0115] The pattern mask (400) may include a material with high reflectivity so that the surface facing the light source (150) can reflect light. For example, the pattern mask (400) may be formed from an alloy containing one of Cu, Ag, and Al, or at least one of these. The pattern mask (400) may be formed in the shape of a thin plate. The pattern mask (400) may be bendable.

[0116] Additionally, the pattern mask (400) may have a pattern formed with a plurality of through holes (not shown). The pattern may have a plurality of through holes.

[0117] Light emitted from the light source (150) can be emitted to the outside through the through hole. In the part where the through hole is not formed, the light from the light source (150) can be reflected. Additionally, the light reflected from the part where the through hole is not formed can be reflected again toward the pattern mask (400) from the reflective part (200) or the partition (300). By reflecting light from the part where the through hole is not formed and reflecting it again from the reflective part (200) or the partition (300), the light uniformity of the lighting module (2) can be improved and a decrease in brightness can be prevented.

[0118] The lighting module according to the embodiment can secure light uniformity and prevent the problem of reduced brightness due to the pattern of the pattern mask (400) organically combined with the second diffusion layer (352). In addition, the lighting module (2) according to the embodiment can have a high contrast ratio due to the pattern of the pattern mask (400).

[0119] The lighting device according to the embodiment may be applied to a vehicle lighting module. For example, the lighting device according to the embodiment may implement various pixel lighting as a vehicle lighting module, but is not limited thereto.

[0120] Although the above description has focused on the embodiments, this is merely an example and is not intended to limit the embodiments. A person skilled in the art will understand that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the embodiments. For instance, each component specifically shown in the embodiments may be modified and implemented. Furthermore, differences related to such modifications and applications should be interpreted as being included within the scope of the embodiments set forth in the appended claims.

Claims

1. A substrate on which a light source is placed; A partition wall spaced apart and disposed on the above substrate; and It includes a first diffusion layer disposed on the light source inside the partition wall; The above first diffusion layer is, It includes a first-1 diffusion layer disposed on the light source and a first-2 diffusion layer disposed on the outer edge of the light source, The first concentration of the first spreading agent in the above 1-1 diffusion layer is higher than the second concentration of the second spreading agent in the above 1-2 diffusion layer, Lighting device.

2. In Paragraph 1, The above 1-1 diffusion layer is arranged to overlap the light source above and below, and The above first and second diffusion layers do not overlap with the light source above and below, Lighting device.

3. In Paragraph 1, A lighting device further comprising a pattern mask disposed on the above partition and the first diffusion layer.

4. In Paragraph 1, A lighting device comprising a hole through which the light source passes and further comprising a reflector disposed on the substrate.

5. A substrate on which a light source is placed; A partition wall spaced apart and disposed on the above substrate; and It includes a second diffusion layer disposed on the light source inside the partition wall; The above second diffusion layer is, A second-1 diffusion layer disposed on the light source and having a curved surface, and a second-2 diffusion layer disposed on the outer edge of the light source, lighting device, 6. In Paragraph 5, The first concentration of the second diffuser in the above 2-1 diffusion layer is higher than the second concentration of the second diffuser in the above 2-2 diffusion layer, Lighting device.

7. In Paragraph 5, The above 2-1 diffusion layer is arranged to overlap the light source above and below, and The above 2-2 diffusion layer does not overlap with the light source above and below, Lighting device.

8. In Paragraph 5, A lighting device further comprising a pattern mask disposed on the above partition and the second diffusion layer.

9. In Paragraph 5, A lighting device comprising a hole through which the light source passes and further comprising a reflector disposed on the substrate.

10. A lighting module comprising any one of the lighting devices of paragraphs 1 through 9.

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