KR20200112155A - Lighting module and lighting apparatus having thereof - Google Patents

Abstract

According to an embodiment of the present invention, a lighting module with improved light extraction efficiency comprises: a substrate; a plurality of light emitting elements disposed on the substrate; a resin layer covering the plurality of light emitting elements and including a plurality of resin units spaced apart from each other; a phosphor layer disposed on the resin layer; and a partition wall disposed between the plurality of resin units. Each of the plurality of resin units is disposed on at least one light emitting element. The partition wall may include a phosphor.

Description

A lighting module and a lighting device having the same {LIGHTING MODULE AND LIGHTING APPARATUS HAVING THEREOF}

An embodiment of the invention relates to a lighting module including a light emitting device and a resin layer.

An embodiment of the invention relates to a lighting module that provides a surface light source.

An embodiment of the invention relates to a light unit or a vehicle lamp having a lighting module.

Typical lighting applications include vehicle lights as well as backlights for displays and signs.

Light-emitting devices, for example, light-emitting diodes (LEDs) have advantages such as low power consumption, semi-permanent life, fast response speed, safety, and environmental friendliness compared to conventional light sources such as fluorescent lamps and incandescent lamps. Such light-emitting diodes are applied to various display devices, various lighting devices such as indoor or outdoor lights.

Recently, as a vehicle light source, a lamp employing a light emitting diode has been proposed. Compared with an incandescent lamp, a light emitting diode is advantageous in that power consumption is small. However, since the emission angle of light emitted from the light emitting diode is small, when the light emitting diode is used as a vehicle lamp, there is a demand for increasing the light emitting area of the lamp using the light emitting diode. In addition, since the light emitting diode has a small size, it is possible to increase the design freedom of the lamp, and it is economical due to its semi-permanent life.

In a lighting module used as a light source for a vehicle, when only some of the light-emitting elements are lit for visibility, the area in which the lit light-emitting elements are disposed and the area in which the unlit light-emitting elements are disposed must be clearly distinguished. In the conventional lighting module, a phenomenon in which light is emitted from the entire lighting module occurred. In addition, there was a problem that the uniformity of the surface light was lowered due to this, and a hot spot phenomenon occurred in the lighting module.

The embodiment may provide a lighting module that provides a surface light source.

The embodiment may provide a lighting module capable of preventing light interference between light emitting devices disposed under different resin loads by disposing a plurality of resin parts on a substrate and a partition wall disposed between the plurality of resin parts.

The lighting module according to the embodiment includes a substrate; A plurality of light emitting devices disposed on the substrate; A resin layer covering the plurality of light emitting elements and including a plurality of resin portions spaced apart from each other; A phosphor layer disposed on the resin layer; And a partition wall disposed between the plurality of resin parts, each of the plurality of resin parts being disposed on at least one light emitting device, and the partition wall may include a phosphor.

In the lighting module according to the embodiment, the partition wall may include a first side extending to any one of a plurality of side surfaces of the resin layer and a second side extending to any one of a plurality of side surfaces of the resin layer. .

In the lighting module according to the embodiment, the first side and the second side of the partition wall may respectively extend to both side surfaces corresponding to each other among a plurality of side surfaces of the resin layer.

In the lighting module according to the embodiment, the first side and the second side of the partition wall may extend to two adjacent side surfaces of a plurality of side surfaces of the resin layer.

In the lighting module according to the embodiment, a plurality of partition walls may be formed, and each of the plurality of partition walls may be disposed between the plurality of resin portions.

In the lighting module according to the embodiment, the plurality of partition walls may be parallel to each other or may be connected to each other in the resin layer.

In the lighting module according to the embodiment, the plurality of resin portions include a first resin portion in which a first light-emitting element is disposed and a second resin portion in which a second light-emitting element is disposed among the plurality of light-emitting elements, and in the first resin portion The spacing between the disposed first light emitting devices may be the same as the spacing between the second light emitting devices disposed in the second resin part.

In the lighting module according to the embodiment, the distance between the first light-emitting element and the second light-emitting element disposed closest to both sides of the partition wall is a distance between the first light-emitting element and the second light-emitting element disposed in the first resin part. It may be the same as the spacing between the second light emitting devices disposed in the resin part.

According to the embodiment, light interference due to lighting of light emitting elements disposed in each resin portion may be prevented by a partition wall disposed in a resin layer having a plurality of resin portions.

The embodiment may provide a lighting module with improved surface light uniformity for each of the different resin portions of the resin layer.

The embodiment may provide a lighting module capable of preventing a hot spot phenomenon by a partition wall.

The embodiment may provide a lighting module having improved light extraction efficiency by a partition wall.

1 is a plan view of a lighting module according to an embodiment.
2 is a cross-sectional view showing A-A' of the lighting module according to the embodiment.
3 is a cross-sectional view showing B-B' of the lighting module according to the embodiment.
4 is a cross-sectional view showing a modified example of the partition wall according to the embodiment.
5 is a cross-sectional view showing a modified example of the partition wall according to the embodiment.
6 is a cross-sectional view showing a modified example of the partition wall according to the embodiment.
7 is a plan view showing a modified example of region C of the embodiment.
8 is a plan view showing a modified example of region C of the embodiment.
9 is a plan view showing a modified example of region C of the embodiment.
10 is a plan view of a vehicle to which a lamp having a lighting module according to an embodiment is applied.
11 is a diagram illustrating a lamp having a lighting module or a lighting device according to an embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in various different forms, and within the scope of the technical idea of the present invention, one or more of the constituent elements may be selectively selected between the embodiments. It can be combined with and substituted for use. In addition, terms (including technical and scientific terms) used in the embodiments of the present invention are generally understood by those of ordinary skill in the art, unless explicitly defined and described. It can be interpreted as a meaning, and terms generally used, such as terms defined in a dictionary, may be interpreted in consideration of the meaning in the context of the related technology. In addition, terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In this specification, the singular form may also include the plural form unless specifically stated in the phrase, and when described as “at least one (or more than one) of A and (and) B and C”, it is combined with A, B, and C. It can contain one or more of all possible combinations. In addition, terms such as first, second, A, B, (a), and (b) may be used in describing the constituent elements of the embodiment of the present invention. These terms are only for distinguishing the component from other components, and are not determined by the nature, order, or order of the component. And, when a component is described as being'connected','coupled' or'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also the component and The case of being'connected','coupled', or'connected' due to another element between the other elements may also be included.

In addition, when it is described as being formed or disposed on the “top (top) or bottom (bottom)” of each component, the top (top) or bottom (bottom) is one as well as when the two components are in direct contact with each other. It also includes a case in which the above other component is formed or disposed between the two components. In addition, when expressed as "upper (upper) or lower (lower)", it may include not only an upward direction but also a downward direction based on one component.

The lighting device according to the present invention can be applied to various lamp devices requiring lighting, such as vehicle lamps, home lighting devices, or industrial lighting devices. For example, when applied to vehicle lamps, headlamps, sidelights, side mirrors, fog lights, tail lamps, brake lights, daytime running lights, vehicle interior lights, door scars, rear combination lamps, backup lamps It is applicable to etc. The lighting device of the present invention can be applied to indoor and outdoor advertising devices, display devices, and various electric vehicle fields, and in addition, it can be applied to all lighting-related fields or advertisement-related fields that have been developed and commercialized or can be implemented according to future technological developments. I would say.

1 is a plan view showing a lighting module according to an embodiment, and FIG. 2 is a cross-sectional view showing a line A-A' of the lighting module according to the embodiment. 3 is a cross-sectional view showing the line B-B' of the lighting module according to the embodiment.

1 and 2, the lighting module 100 supplies power to the substrate 10, a plurality of light emitting devices 20 disposed on the substrate 10, and the light emitting devices 20. A connector 14, a resin layer 30 including a plurality of resin portions 31 and 32 covering the light emitting device 20, a partition wall 50 disposed between the plurality of resin portions 31 and 32, It may include any one of the phosphor layers 40 disposed on the resin layer 30.

The lighting module 100 may emit light emitted from the light emitting device 20 to a surface light source. The light emitting device 20 may be disposed on the substrate 10 in plural. In the lighting module 100, the plurality of light emitting devices 20 may be arranged in N columns (N is an integer greater than or equal to 1) or/and M rows (M is an integer greater than or equal to 1). The plurality of light-emitting devices 20 may be arranged in N columns and M rows (N and M are integers of 2 or more) as shown in FIG. 1.

The lighting module 100 can be applied to various lamp devices that require lighting, such as vehicle lamps, home lighting devices, and industrial lighting devices. For example, in the case of lighting modules applied to vehicle lamps, head lamps, vehicle width lights, side mirror lights, fog lights, tail lamps, turn signal lamps, back up lamps, and stop lamps ), Daytime running right, vehicle interior lighting, door scarf, rear combination lamp, backup lamp, etc.

As shown in FIGS. 1 and 2, the substrate 10 may function as a base member or a support member located under the plurality of light emitting devices 20 and the resin layer 30. The substrate 10 may include a printed circuit board (PCB). For example, the substrate 10 may include at least one of a resin-based printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, or an FR-4 substrate. .

The upper surface of the substrate 10 has an X-axis-Y-axis plane, and the thickness of the substrate 10 may be a height in the Z direction orthogonal to the X and Y directions. Here, the X direction may be a first direction, the Y direction may be a second direction orthogonal to the X direction, and the Z direction may be a third direction orthogonal to the X and Y directions.

The substrate 10 includes a wiring layer (not shown) thereon, and the wiring layer may be electrically connected to the light emitting device 20. The substrate 10 may include a reflective member or a protective layer disposed thereon, and may protect the wiring layer. The plurality of light emitting devices 20 may be connected in series, parallel, or in series-parallel by a wiring layer of the substrate 10. In the plurality of light emitting devices 20, a group having two or more may be connected in series or in parallel, or the groups may be connected in series or in parallel.

The first direction (X direction) length (x1) and the second direction (Y direction) length (y1) of the substrate 10 may be different, for example, the length in the first direction (x1) is the length in the second direction. It can be arranged longer than (y1). The length (x1) in the first direction may be arranged to be at least twice the length (x1) in the second direction. The thickness of the substrate 10 may be 0.5 mm or less, for example, in the range of 0.3 mm to 0.5 mm. Since the thickness of the substrate 10 is provided to be thin, the thickness of the lighting module may not be increased. Since the substrate 10 has a thickness of 0.5 mm or less, it can support a flexible module. The thickness of the substrate 10 may be less than or equal to 0.1 times the distance from the lower surface of the substrate 10 to the upper surface of the uppermost layer, or may range from 0.1 to 0.06 times. The interval from the lower surface of the substrate 10 to the upper surface of the uppermost layer may be a module thickness.

The thickness of the lighting module 100 may be less than 1/3 of the shorter length of the lengths (x1, y1) in the first direction (X direction) and the second direction (Y direction) of the substrate 10, Not limited. The thickness of the lighting module 100 may be 5.5 mm or less from the bottom of the substrate 10, 4.5 mm to 5.5 mm, or 4.5 mm to 5 mm. The thickness of the lighting module 100 may be a linear distance between the lower surface of the substrate 10 and the upper surface of the ink layer 60. The thickness of the lighting module 100 may be 220% or less of the thickness of the resin layer 30, for example, in the range of 180% to 220%. Since the lighting module 100 has a thickness of 5.5 mm or less, it may be provided as a flexible and slim surface light source module.

If the thickness of the lighting module 100 is thinner than the above range, the light diffusion space may be reduced and a hot spot may occur. If the thickness of the lighting module 100 is greater than the above range, spatial installation restrictions and design freedom may decrease due to an increase in the module thickness. According to the embodiment, the thickness of the lighting module 100 is 5.5 mm or less or 5 mm or less, so that a curved structure is provided as a module, so that design freedom and space restrictions can be reduced. The ratio of the length (y1) in the Y direction of the lighting module 100 to the thickness of the lighting module 100 may be 1:m, may have a ratio relationship of m≥1, and m is at least 1 Is a natural number or more, and the heat of the light emitting device 20 may be an integer smaller than m. For example, if m is 4 times or more larger than the thickness of the lighting module 100, the light emitting devices 20 may be arranged in 4 rows.

The substrate 10 may be provided with a connector 14 in a part to supply power to the light emitting devices 20. The region 13 on the substrate 10 in which the connector 14 is disposed is a region where the resin layer 30 is not formed, and may be equal to or less than the length y1 of the substrate 10 in the Y direction. . The connector 14 may be disposed on a part of the upper surface or a part of the lower surface of the substrate 10. When the connector 14 is disposed on the bottom surface of the substrate 10, the region may be removed. The substrate 10 may have a rectangular top-view shape, a square shape, or another polygonal shape, and may be a bar shape having a curved shape. The connector 14 may be a terminal connected to the light emitting device 20 or a female connector or a male connector.

The substrate 10 may include a protective layer or a reflective layer thereon. The protective layer or the reflective layer may include a member having a solder resist material, and the solder resist material is a white material, and may reflect incident light.

As another example, the substrate 10 may include a transparent material. Since the substrate 10 made of the transparent material is provided, light emitted from the light emitting device 20 may be emitted in the upper and lower directions of the substrate 10.

The light emitting device 20 may be disposed on the substrate 10. The light emitting device 20 has a light exit surface (S1) and a plurality of side surfaces (S2), and the light exit surface (S1) faces an upper surface of the ink layer 60, and the light is directed toward the ink layer 60. Will be released. The light exit surface S1 is an upper surface of the light emitting device 20 and most of the light is emitted. The plurality of side surfaces S2 include at least four side surfaces, and light is emitted toward the side of the light emitting device 20. The light emitting device 20 is an LED chip that emits light on at least five surfaces, and may be disposed on the substrate 10 in a flip chip form. The light emitting device 20 may be formed to a thickness of 0.3 mm or less.

As another example, the light emitting device 20 may be implemented as a horizontal chip or a vertical chip. In the case of the horizontal chip or the vertical chip, it may be connected to other chips or wiring patterns by wires. When a wire is connected to the LED chip, the thickness of the diffusion layer may increase due to the height of the wire, and the distance between the light emitting devices 20 may increase due to a connection space according to the length of the wire. In the light emitting device 20 according to the embodiment, the distribution of a directivity angle may increase due to light emission from five surfaces. The light emitting device 20 may be disposed on the substrate 10 as a flip chip. The spacing (a) between the light emitting devices 20 may be equal to or greater than the thickness (b, b≤a) of the resin layer 30. The spacing (a) may be, for example, 2.5 mm or more, and may vary depending on the size of the LED chip. The minimum interval between the light emitting devices 20 may be equal to or greater than the thickness of the resin layer 30.

Since the light emitting device 20 disclosed in the embodiment is provided as a flip chip that emits light on at least five sides, the luminance distribution and the directivity distribution of the light emitting device 20 can be improved.

When the light-emitting devices 20 are arranged in an N×M matrix on the substrate 10, N may be one or two or more columns, and M may be one or two or more rows. N and M are integers of 1 or more. The light emitting devices 20 may be arranged in the Y-axis and X-axis directions, respectively.

The light emitting device 20 is a light emitting diode (LED) chip and may emit at least one of blue, red, green, ultraviolet (UV), and infrared rays. The light emitting device 20 may emit at least one of blue, red, and green light, for example. The light emitting device 20 may be electrically connected to the substrate 10, but is not limited thereto.

The plurality of light emitting devices 20 disposed on the substrate 10 may be sealed by a resin layer 30. The plurality of light emitting devices 20 may be in contact with the resin layer 30. The resin layer 30 may be disposed on the side surface and the upper surface of the light emitting device 20. The plurality of light emitting devices 20 include a plurality of first light emitting devices 21 sealed by a first resin part 31 and a second light emitting devices 22 sealed by a second resin part 32 can do. The distance (a) between the adjacent first light emitting devices 21 and the distance (c) between the adjacent second light emitting devices 22 may be the same. The distance (d) between the first light-emitting device 21 and the second light-emitting device 22 disposed closest to each other is the distance (a) between the first light-emitting device 21 and the second light-emitting device 22 It may be the same as the distance (c) between.

Light emitted from the light emitting device 20 may be emitted through the resin layer 30. Light emitted from the light emitting device 20 may be emitted to the outside through the resin layer 30 and the phosphor layer 40 disposed on the resin layer 30. Light emitted from the light emitting device 20 may be emitted to the outside through the resin layer 30 and the ink layer 60 disposed on the phosphor layer 40.

When only some of the light-emitting elements are turned on in a conventional vehicle lighting module, the area where the light-emitting element is not lit and the lit area are not clearly distinguished, and light is emitted from the entire area of the lighting module, resulting in a decrease in surface light uniformity. There was a problem that spot phenomenon occurs. In the lighting module according to the embodiment, this problem can be solved by the partition wall 50 disposed between the plurality of light emitting devices 20.

The resin layer 30 may include a plurality of resin portions 31 and 32 and a partition wall 50. The resin layer 30 may include a plurality of side surfaces (1, 2, 3, 4). The plurality of side surfaces (1, 2, 3, 4) of the resin layer 30 include a first side (1) and a second side (2) opposite to the first side (1), and the first side (1). ) And a third side surface 3 extending from the second side surface 2, and a fourth side surface 4 opposite to the third side surface 3.

The resin layer 30 may be a transparent resin material, for example, a resin material such as UV (Ultra violet) resin, silicone, or epoxy. The resin layer 30 may be a diffusion layer or a molding layer without a diffusion agent. The UV resin may be, for example, a resin (oligomer type) containing a urethane acrylate oligomer as a main material. For example, it is possible to use a synthetic oligomer urethane acrylate oligomer. The main material may further include a monomer in which a low boiling point dilution reactive monomer such as IBOA (isobornyl acrylate), HBA (Hydroxybutyl Acrylate), HEMA (Hydroxy Metaethyl Acrylate), and the like are mixed, and a photoinitiator (such as 1-hydroxycyclohexyl) as an additive. Phenyl-ketone, Diphenyl), Diphwnyl (2,4,6-trimethylbenzoyl phosphine oxide), or an antioxidant may be mixed. The UV resin may be formed of a composition comprising 10 to 21% oligomer, 30 to 63% monomer, and 1.5 to 6% additive. In this case, the monomer may be composed of a mixture of IBOA (isobornyl Acrylate) 10 to 21%, HBA (Hydroxybutyl Acrylate) 10 to 21%, and HEMA (Hydroxy Metaethyl Acrylate) 10 to 21%. The additive may be formed into a mixture capable of improving the yellowing phenomenon by adding 1 to 5% of a photoinitiator to initiate photoreactivity, and adding 0.5 to 1% of an antioxidant. In the formation of the resin layer using the above-described composition, it is possible to control the refractive index and thickness by forming a layer with a resin such as UV resin instead of a light guide plate, and at the same time, adhesive properties, reliability, and mass production speed are all achieved using the above-described composition. You can make it meet.

The resin layer 30 may include a plurality of resin portions 31 and 32. The plurality of resin parts 31 and 32 may be disposed on the plurality of light emitting devices 20. The plurality of resin portions 31 and 32 may include a first resin portion 31 and a second resin portion 32. The plurality of resin portions 31 and 32 include a first resin portion 31 disposed on the first light emitting device 21 and a second resin portion 32 disposed on the second light emitting device 22 It may include. The first resin part 31 may be disposed on one side of the partition wall 50, and the second resin part 32 may be disposed on the other side of the partition wall 50. The first resin part 31 may be disposed between the first side surface 1 of the resin layer 30 and the partition wall 50. The second resin part 32 may be disposed between the second side surface 2 of the resin layer 30 and the partition wall 50. The number of the first light emitting elements 21 surrounded by the first resin portion 31 may be greater or less than the number of the second light emitting elements 22 surrounded by the second resin portion 32.

The partition wall 50 may be disposed between a plurality of light emitting devices 20. The partition wall 50 may be disposed between the first light emitting device 21 and the second light emitting device 22. The partition wall 50 may be disposed between the first resin portion 31 and the second resin portion 32. The partition wall 50 may contact the lower surface of the phosphor layer 40 and the upper surface of the substrate 10. The upper surface of the partition wall 50 may contact the lower surface of the phosphor layer 40. The lower surface of the partition wall 50 may contact the lower surface of the substrate 10. The partition wall 50 may be integrally formed with the phosphor layer 40.

The partition wall 50 may connect at least one of a plurality of side surfaces of the resin layer 30. The partition wall 50 includes a first side surface 50a extending to any one of a plurality of side surfaces 1, 2, 3, 4 of the resin layer 30 and a plurality of side surfaces of the resin layer 30 ( It may include a second side surface (50b) extending to any one of 1, 2, 3, 4). The first side surface 50a and the second side surface 50b of the partition wall 50 may extend to both sides corresponding to each other among the plurality of side surfaces 1, 2, 3, 4 of the resin layer 30, respectively. have. The first side surface 50a and the second side surface 50b of the partition wall 50 may extend to two adjacent side surfaces of the plurality of side surfaces 1, 2, 3, and 4 of the resin layer 30.

The distance e between the partition wall 50 and the first light-emitting device 21 closest to the partition wall 50 and the partition wall 50 is between the second light-emitting device 22 and the partition wall 50 closest to the partition wall 50 It may be equal to the distance (f) of

The thickness g of the partition wall 50 may be smaller than the height h of the partition wall 50. The thickness g of the partition wall 50 may have a value of 50% or less of the distance d between the light emitting devices 20 adjacent to the partition wall 50. The thickness g of the partition wall 50 may be 0.5 mm or less or 1.0 mm or more. When the thickness g of the partition wall 50 is 0.5 mm or less, the partition wall 50 may not be visually recognized from the outside. When the thickness g of the partition wall 50 is 1.0 mm or more, the partition wall 50 may be visually recognized from the outside. The height h of the partition wall 50 may be the same as the thickness b of the resin layer 30.

The partition wall 50 may include a phosphor. The phosphor may include a phosphor of a fluoride compound, and for example, may include at least one of an MGF-based phosphor, a KSF-based phosphor, or a KTF-based phosphor. When the phosphor is a red phosphor, the red phosphor may have a wavelength range of 610 nm to 650 nm, and the wavelength may have a width of less than 10 nm. The red phosphor may include a fluoride-based phosphor.

The partition wall 50 may contain ink. PVC (Poly vinyl chloride) ink, PC (Polycarbonate) ink, ABS (acrylonitrile butadiene styrene copolymer) ink, UV resin ink, epoxy ink, silicone ink, PP (Polypropylene ) ink, water-based ink, plastic ink, PMMA (poly methyl methacrylate) ) Ink, PS (Polystyrene ) ink can be selectively applied. The partition wall 50 may include a diffusion agent.

When only some of the light-emitting elements are turned on in the conventional vehicle lighting module, the area where the light-emitting element is not lit and the lighted area are not clearly distinguished. However, in the lighting module according to the embodiment, the area where the light-emitting element is not lit and the area where the light-emitting element is lit can be clearly distinguished by the partition wall 50 disposed between the plurality of light-emitting elements 20, so that the lighting module from the outside When viewed, the visibility of the lighting module can be improved. In addition, the light emitted from the light-emitting device 20 is reflected by the partition wall 50 disposed between the plurality of light-emitting devices 20, thereby preventing the hot spot phenomenon of the lighting module and improving the uniformity of surface light. Can have

A phosphor layer 40 may be disposed on the resin layer 30. The phosphor layer 40 may be disposed to cover the upper surface of the resin layer 30. The phosphor layer 40 disposed on the resin layer 30 may extend to the side surfaces 1, 2, 3 and 4 of the resin layer 30. The phosphor layer 40 may surround side surfaces 1, 2, 3, and 4 of the resin layer 30. The phosphor layer 40 extending to the side surfaces 1, 2, 3, 4 of the resin layer 30 may contact the upper surface of the substrate 10. The lower outer side of the phosphor layer 40 may be in contact with the upper surface of the substrate 10.

The phosphor layer 40 may include a transparent material. The phosphor layer 40 may include a transparent insulating material. The phosphor layer 40 may be made of silicon, and may be made of silicon having different chemical bonds. Silicone is a polymer in which silicon as an inorganic substance and carbon as an organic substance are combined, and has physical properties such as thermal stability, chemical stability, abrasion resistance, and glossiness of inorganic substances and reactivity, solubility, elasticity, and processability, which are characteristics of organic substances. Silicone may include general silicone, and fluorine silicone with an increased fluorine ratio. Increasing the fluorine ratio of fluorine silicone has an effect of improving moisture-proof properties.

The phosphor layer 40 may include a wavelength conversion means for receiving light emitted from the light emitting device 20 and providing wavelength-converted light. For example, the phosphor layer 40 may include at least one selected from a group including phosphors, quantum dots, and the like. The phosphor or quantum dot may emit blue, green, or red light.

The phosphor may be evenly disposed inside the phosphor layer 40. The phosphor may include a phosphor of a fluoride compound, and for example, may include at least one of an MGF-based phosphor, a KSF-based phosphor, or a KTF-based phosphor.

When the phosphor is a red phosphor, the red phosphor may have a wavelength range of 610 nm to 650 nm, and the wavelength may have a width of less than 10 nm. The red phosphor may include a fluoride-based phosphor.

An ink layer 60 may be disposed on the phosphor layer 40. The ink layer 60 disposed on the phosphor layer 40 may extend to a side surface of the phosphor layer 40. The ink layer 60 may surround a side surface of the phosphor layer 40. The ink layer 60 extending to the side of the phosphor layer 40 may be in contact with the upper surface of the substrate 10. The outer lower end of the ink layer 60 may contact the upper surface of the substrate 10.

The ink layer 60 includes polyvinyl chloride (PVC) ink, polycarbonate (PC) ink, acrylonitrile butadiene styrene copolymer (ABS) ink, UV resin ink, epoxy ink, silicone ink, polypropylene (PP ) ink, water-based ink, plastic It can be selectively applied among ink, poly methyl methacrylate (PMMA) ink, and polystyrene (PS ) ink. The ink layer 60 may include at least one of red, green, yellow, and blue. For example, the red color of the ink layer 60 may be darker than the color of the phosphor or the wavelength of light. The ink layer 60 may have a color different from the color of light emitted from the light emitting device 20. The ink layer 60 may have an effect of blocking or blocking incident light.

As described above, in the lighting module according to the embodiment shown in FIGS. 1 to 3, the resin layer 30 is divided into a first resin part 31 and a second resin part 32 by a partition wall 50. Can be. In addition, the plurality of light emitting devices 20 may be divided into a first light emitting device 21 and a second light emitting device 22 surrounded by the first resin part 31 and the second resin part 32. Accordingly, when only some of the light-emitting elements (the first light-emitting element 21 or the second light-emitting element 22) are turned on, the light emitted from the light-emitting element 20 is not emitted to the entire lighting module, and the partition wall ( 50), the lighted area (the first resin portion 31 or the second resin portion 32) can be clearly distinguished, so that the visibility and reliability of the lighting module can be improved. Further, the light emitted from the plurality of light emitting devices 20 is reflected by the partition wall 50 to prevent hot spots and improve the uniformity of surface light, thereby improving the reliability of the lighting module.

Next, FIG. 4 is a diagram showing a modified example of the lighting module according to the embodiment. In FIG. 4, the contents previously described in the lighting module according to the embodiments shown in FIGS. 1 and 2 may be adopted.

The phosphor layer 40 may be disposed on the resin layer 30. The phosphor layer 40 disposed on the resin layer 30 may extend to a side surface of the resin layer 30. The phosphor layer 40 extending to the side of the resin layer 30 may be in contact with the upper surface of the substrate 10. The outer lower end of the phosphor layer 40 may be in contact with the upper surface of the substrate 10.

The partition wall 50 may be formed of the same material as the ink layer 60. The partition wall 50 may be in contact with the lower surface of the phosphor layer 40 and the upper surface of the substrate 10. The partition wall 50 may include a phosphor. The partition wall 50 may include a diffusion agent.

The partition wall 50 shown in FIG. 4 may be formed of the same material as the ink layer 60, and the partition wall 50 is disposed between the lower surface of the phosphor layer 40 and the upper surface of the substrate 10 Can be. Accordingly, since the light emitted from the light emitting device 20 may be reflected by the partition wall 50, visibility from the outside may be improved even when the light emitting device of the lighting module according to the embodiment is partially unlit.

Next, FIG. 5 is a diagram showing a modified example of the lighting module according to the embodiment. In FIG. 5, the contents previously described in the lighting module according to the embodiment illustrated in FIGS. 1 to 3 may be adopted.

An ink layer 60 may be disposed on the phosphor layer 40. The ink layer 60 may be formed to cover the upper surface of the phosphor layer 40. The ink layer 60 may cover an upper surface of the phosphor layer 40.

The partition wall 50 may be formed of the same material as the ink layer 60. The partition wall 50 may contact the lower surface of the ink layer 60 and the upper surface of the substrate 10. The partition wall 50 may penetrate the phosphor layer 40. The partition wall 50 may extend from the lower surface of the ink layer 60 to penetrate the phosphor layer 40 and contact the lower surface of the substrate 10. The partition wall 50 may include a phosphor. The partition wall 50 may include a diffusion agent.

Accordingly, since the light emitted from the light emitting device 20 may be reflected by the partition wall 50, visibility from the outside may be improved even when the light emitting device of the lighting module according to the embodiment is partially unlit.

Next, FIG. 6 is a diagram showing a modified example of the lighting module according to the embodiment. In FIG. 6, the contents previously described in the lighting module according to the embodiment shown in FIGS. 1 to 3 may be adopted.

The phosphor layer 40 may be disposed on the resin layer 30. The phosphor layer 40 may be formed to cover the upper surface of the resin layer 30. The phosphor layer 40 may be formed to extend to the side surface of the resin layer 30 to cover the side surface of the resin layer 30.

An ink layer 60 may be disposed on the phosphor layer 40. The ink layer 60 may be formed to cover the upper surface of the phosphor layer 40. The ink layer 60 may cover an upper surface of the phosphor layer 40. The ink layer 60 includes a first ink layer 61 disposed on the phosphor layer 40 and a phosphor layer 40 surrounding each of the first resin portion 31 and the second resin portion 32. ) It may include a second ink layer 62 disposed between. The first ink layer 61 may extend to a side surface of the phosphor layer 40 to contact a lower surface of the substrate 10. The second ink layer 62 may be disposed in a through hole formed in the phosphor layer 40. The second ink layer 62 may extend from the lower surface of the first ink layer 61 and contact the lower surface of the substrate 10. At this time, the concentration of the second ink layer 62 may be different from the concentration of the first ink layer 61, and the concentration of the second ink layer 62 is greater than the concentration of the first ink layer 61. You can make it big. Through this, the light leaked from the first resin part 31 or the light leaked from the second resin part 32 may serve as a partition wall 51 that prevents leakage from each other.

Next, FIG. 7 is a plan view showing a modified example of region C of the lighting module according to the embodiment. In FIG. 7, contents previously described in the lighting module according to the embodiment illustrated in FIGS. 1 to 4 may be adopted.

The partition wall 50 may include a plurality of partition walls 51, 52, and 53 disposed between the plurality of resin portions 31 and 32. The partition walls 51, 52 and 53 may connect one or more side surfaces of the plurality of side surfaces 1, 2, 3 and 4 of the resin layer 30. The partition walls 51, 52, and 53 may connect the third side surface 3 and the fourth side surface 4 of the resin layer 30. The partition walls 51, 52, and 53 may extend from the third side surface 3 of the resin layer 30 to extend to the fourth side surface 4 of the resin layer 30.

The plurality of partition walls 51, 52 and 53 may include any one of a first partition wall 51, a second partition wall 52, and a third partition wall 53. The first partition wall 51 and the third partition wall 53 may be disposed parallel to the first side surface 1 and the second side surface 2 of the resin layer 30. The first and third partitions 51 and 53 may extend in a direction parallel to the second direction. The first and third partitions 51 and 53 may be disposed to correspond to the first and second side surfaces 1 and 2 of the resin layer 30. One side of the first partition wall 51 may contact a side surface of the resin layer 30 and the other side may contact the second partition wall 52. One side of the third partition wall 53 may contact a side surface of the resin layer 30 and the other side may contact the second partition wall 52.

The second partition wall 52 may connect the first partition wall 51 and the third partition wall 53 to each other. The second partition wall 52 may be disposed parallel to the third side surface 3 and the fourth side surface 4 of the resin layer 30. The second partition wall 52 may extend in a direction parallel to the first direction. The second partition wall 52 may extend in a direction perpendicular to a direction in which the first and third partition walls 51 and 53 are extended and disposed. One side surface of the second partition wall 52 may contact the first partition wall 51, and the other side surface may contact the third partition wall 53. The second partition wall 52 may be disposed to correspond to the third side surface 3 and the fourth side surface 4 of the resin layer 30.

The first resin portion 31 is disposed between the plurality of partition walls 51, 52, 53 and the first side surface 1, the third side surface 3, and the fourth side surface 4 of the resin layer 30. Can be placed. The second resin portion 33 is disposed between the plurality of partition walls 51, 52, 53 and the second side surface 2, the third side surface 3, and the fourth side surface 4 of the resin layer 30. Can be placed. A first light emitting device 21 of the plurality of light emitting devices 20 may be disposed under the first resin part 31. A second light-emitting device 22 of the plurality of light-emitting devices 20 may be disposed under the second resin part 33. The number of first light-emitting elements 21 disposed under the first resin part 31 and the number of second light-emitting elements 22 disposed under the second resin part 33 may be different from each other.

The first resin part 31 may include a region protruding from the first side surface 1 to the second side surface 2 direction of the resin layer 30. The second resin part 32 may include a region protruding from the second side surface 2 of the resin layer 30 toward the first side surface 1. The protruding regions of the first resin portion 31 and the second resin portion 32 may be disposed to overlap each other in the third and fourth side directions of the resin layer 30.

An area of the substrate 10 disposed under the first resin part 31 and an area of the substrate 10 disposed under the second resin part 33 may be different. An area of the substrate 10 disposed under the first resin part 31 may be smaller or larger than an area of the substrate 10 disposed under the second resin part 33.

In FIG. 7, the plurality of partition walls 51, 52, and 53 may be disposed between the first resin part 31 and the second resin part 33. The second partition wall 52 extends in a direction perpendicular to a direction in which the first partition wall 51 and the third partition wall 53 are extended, so that the first partition wall 51 and the third partition wall 53 I can connect. Accordingly, since the light emitted from the light emitting device 20 disposed under the first resin part 31 and the second resin part 33 can be reflected by the plurality of partition walls 51, 52, 53 Even when the light-emitting elements 20 disposed in the resin portions 31 and 32 of the lighting module according to the embodiment are partially unlit, visibility from the outside may be improved. In addition, when any one of the light emitting devices 21 and 22 disposed in the first resin part 31 and the second resin part 32 is not lit, the first resin part 31 and the second Visibility from the outside may be improved by the protruding area of the resin part 32.

Next, FIG. 8 is a plan view showing a modified example of region C of the lighting module according to the embodiment. In FIG. 8, the contents previously described in the lighting module according to the embodiment shown in FIGS. 1 to 5 may be adopted.

The partition wall 50 may include a plurality of partition walls 51 and 52 disposed between the plurality of resin portions 31 to 34. The plurality of partition walls 51 and 52 may include a first partition wall 51 disposed between the first side surface 1 and the second side surface 2 of the resin layer 30. The first partition wall 51 may be disposed to correspond to the first side surface 1 and the second side surface 2 of the resin layer 30. The first partition wall 51 may be disposed to extend in a direction parallel to the first side surface 1 and the second side surface 2 of the resin layer 30. The first partition wall 51 may be disposed to extend in the first direction. The first partition wall 51 extends from the third side surface 3 of the resin layer 30 to the fourth side surface 4 of the resin layer 30 and extends to the third side surface 3 of the resin layer 30. ) And the fourth side (4) can be connected.

It may include a second partition wall 52 disposed between the third side surface 3 and the fourth side surface 4 of the resin layer 30. The second partition wall 52 may be disposed to correspond to the third side surface 3 and the fourth side surface 4 of the resin layer 30. The second partition wall 52 may be disposed to extend in a direction parallel to the third side surface 3 and the fourth side surface 4 of the resin layer 30. The second partition wall 52 may be disposed to extend in the second direction. The second partition wall 52 extends from the first side surface 1 of the resin layer 30 to the second side surface 2 of the resin layer 30 and extends to the first side surface 1 of the resin layer 30. ) And the second side (2) can be connected. The first partition wall 51 and the second partition wall 52 may extend in a direction perpendicular to each other. The resin layer 30 may be divided into the plurality of resin portions 31 to 34 by the first partition wall 51 and the second partition wall 52.

The plurality of light emitting devices 20 include a first light emitting device 21 disposed under the first resin part 31, a second light emitting device 22 disposed under the second resin part 32, and a third resin part ( A third light-emitting device 23 disposed under 33) and a fourth light-emitting device 24 disposed under the fourth resin part 34 may be included. Power may be applied to at least one of the plurality of light-emitting devices 21, 22, 23, and 24. Accordingly, the light design of the lighting module can be variously changed by applying power only to the light emitting devices 21, 22, 23, and 24 desired by the user from the plurality of light emitting devices 21, 22, 23, and 24.

The first resin part 31 may be disposed between the first side surface 1, the third side surface 3, the first partition wall 51, and the second partition wall 52 of the resin layer. The second resin portion 32 may be disposed between the second side surface 2 and the third side surface 3 of the resin layer 30, the first partition wall 51, and the second partition wall 52. have. The third resin portion 33 may be disposed between the first side surface 1, the fourth side surface 4, the first partition wall 51, and the second partition wall 52 of the resin layer. The fourth resin part 34 may be disposed between the second side surface 2 and the fourth side surface 4 of the resin layer 30, the first partition wall 51, and the second partition wall 52. have. The number of light emitting elements 21-24 disposed under the first resin portion 31 to the fourth resin portion 34 may be different from each other. Areas of the substrate 10 disposed under the first resin portion 31 to the fourth resin portion 34 may be different from each other.

In FIG. 8, the resin layer 30 may be divided into the first resin portion 31 to the fourth resin portion 34 by the plurality of partition walls 51 and 52. In addition, the first partition wall 51 and the second partition wall 52 may extend in a direction perpendicular to each other to be orthogonal.

Accordingly, the light emitted from the light emitting elements 21, 22, 23, 24 disposed under the plurality of resin parts 31, 32, 33, 34 can be reflected by the plurality of partition walls 51, 52. Therefore, visibility from the outside may be improved even when the light emitting elements 21, 22, 23, and 24 disposed in the resin portions 31, 32, 33, and 34 of the lighting module according to the embodiment are partially unlit. In addition, power may be applied to at least one of the plurality of light-emitting devices 21, 22, 23, and 24. Accordingly, the light design of the lighting module according to the embodiment can be variously changed by applying power only to the light emitting devices 21, 22, 23, 24 desired by the user from the plurality of light emitting devices 21, 22, 23, 24. have.

Next, FIG. 9 is a plan view showing a modified example of region C of the lighting module according to the embodiment. In FIG. 9, the contents previously described in the lighting module according to the embodiment shown in FIGS. 1 to 5 may be adopted.

The partition wall may include a plurality of partition walls 51, 52, 53, 54 and 55 disposed between the plurality of resin parts 31 and 32. The plurality of partition walls 51, 52, 53, 54, 55 are a first partition wall 51 and a third partition wall disposed between the first side surface 1 and the second side surface 2 of the resin layer 30 (53), including a fifth partition wall 55 and a second partition wall 52 and a fourth partition wall 54 disposed between the third side surface 3 and the fourth side surface 4 of the resin layer 30 can do. The second partition wall 52 is connected to the first partition wall 51 and the third partition wall 53, and the fourth partition wall 54 is the third partition wall 53 and the fifth partition wall 55 I can connect. The first partition wall 51, the third partition wall 53, and the fifth partition wall 55 extend in a direction perpendicular to the direction in which the second partition wall 52 and the fourth partition wall 54 extend. It may be disposed, but is not limited thereto.

The first resin portion between the plurality of partition walls 51, 52, 53, 54, 55 and the first side (1), third side (3), and fourth side (4) of the resin layer 30 31 can be deployed. The second resin portion between the plurality of partition walls 51, 52, 53, 54, 55 and the second side (2), third side (3), and fourth side (4) of the resin layer 30 (32) may be deployed. A first light emitting device 21 of the plurality of light emitting devices 20 may be disposed under the first resin part 31. A second light-emitting device 22 of the plurality of light-emitting devices 20 may be disposed under the second resin part 32. The number of first light-emitting elements 21 disposed under the first resin part 31 and the number of second light-emitting elements 22 disposed under the second resin part 32 may be different from each other.

The first resin part 31 may include a region protruding from the first side surface 1 to the second side surface 2 direction of the resin layer 30. The second resin part 32 may include a plurality of regions protruding from the second side surface 1 of the resin layer 30 toward the first side surface 1. The protruding region of the first resin part 31 may be disposed between a plurality of protruding regions of the second resin part 32. In the lighting module according to the embodiment, when any one of the light emitting devices 21 and 22 disposed in the first resin part 31 and the second resin part 32 is not lit, the first resin part ( 31) and the protruding area of the second resin part 32 may improve visibility from the outside.

An area of the substrate 10 disposed under the first resin part 31 and an area of the substrate 10 disposed under the second resin part 32 may be different. An area of the substrate 10 disposed under the first resin part 31 may be smaller or larger than an area of the substrate 10 disposed under the second resin part 32.

Accordingly, the light emitted from the light emitting device 20 disposed under the first resin part 31 and the second resin part 32 is prevented by the plurality of partition walls 51, 52, 53, 54, 55. Since it may be reflected, visibility from the outside may be improved even when the light emitting device of the lighting module according to the embodiment is partially unlit. In addition, in the lighting module according to the embodiment, when any one of the light emitting devices 21 and 22 disposed on the first resin part 31 and the second resin part 32 is not lit, the first resin Visibility from the outside may be improved by the protruding area of the part 31 and the second resin part 32.

10 is a plan view of a vehicle to which a vehicle lamp to which a lighting module is applied according to an embodiment is applied, and FIG. 11 is a view showing a vehicle lamp having a lighting module or a lighting device disclosed in the embodiment.

10 and 11, in the vehicle 900, the rear light 800 includes a first lamp unit 812, a second lamp unit 814, a third lamp unit 816, and a housing 810. can do. Here, the first lamp unit 812 may be a light source for the role of a turn indicator, the second lamp unit 814 may be a light source for the role of a vehicle width lamp, and the third lamp unit 816 serves as a brake light. It may be a light source for, but is not limited thereto. At least one or all of the first to third lamp units 812, 814, and 816 may include the lighting module disclosed in the embodiment. The housing 810 accommodates the first to third lamp units 812, 814, and 816, and may be made of a light-transmitting material. At this time, the housing 810 may have a curvature according to the design of the vehicle body, and the first to third lamp units 812, 814, and 816 may have a curved surface according to the shape of the housing 810. Can be implemented. Such a vehicle lamp may be applied to a vehicle turn signal lamp when the lamp unit is applied to a vehicle tail lamp, a brake lamp, or a turn signal lamp.

At this time, even if the first lamp unit 812, the second lamp unit 814, and the third lamp unit 816 use the same color or color that emits light, they must be distinguished by the difference in intensity of the light. do. Since the area between the first lamp unit to the third lamp unit 812, 814, and 816 must be clearly divided so that light does not mix, the area between the first and third lamp units 812, 814, and 816 should be clearly divided, as in the embodiment The 814 may be implemented as the first resin part 31 and the second lamp unit 816 may be implemented as the second resin part 32.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Further, the features, structures, effects, etc. illustrated in each embodiment may be implemented by combining or modifying other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Accordingly, contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiments have been described above, these are only examples and do not limit the present invention, and those of ordinary skill in the field to which the present invention belongs are illustrated above within the scope not departing from the essential characteristics of the present embodiment. It will be seen that various modifications and applications that are not available are possible. For example, each component specifically shown in the embodiment can be modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

10: substrate 20: light emitting element:
30: resin layer 40: phosphor layer
50: partition wall 60: ink layer

Claims (8)

Board;
A plurality of light emitting devices disposed on the substrate;
A resin layer covering the plurality of light emitting elements and including a plurality of resin portions spaced apart from each other;
A phosphor layer disposed on the resin layer; And
It includes a partition wall disposed between the plurality of resin parts,
Each of the plurality of resin parts is disposed on at least one light emitting device,
The partition wall is a lighting module including a phosphor. The method of claim 1,
The partition wall includes a first side surface extending to one of a plurality of side surfaces of the resin layer and a second side surface extending to one of a plurality of side surfaces of the resin layer. The method of claim 1,
The first and second side surfaces of the partition wall are respectively extended to both side surfaces corresponding to each other among a plurality of side surfaces of the resin layer. The method of claim 2,
The first and second side surfaces of the partition wall extend to two adjacent sides of the resin layer. The method of claim 3,
A plurality of the partition walls are formed,
Each of the plurality of partition walls is a lighting module disposed between the plurality of resin parts. The method of claim 5,
The plurality of partition walls are parallel to each other or are connected to each other in the resin layer lighting module. The method of claim 1,
The plurality of resin portions include a first resin portion in which a first light-emitting element is disposed and a second resin portion in which a second light-emitting element is disposed among the plurality of light-emitting elements,
A lighting module in which an interval between the first light emitting elements disposed in the first resin part is the same as a distance between the second light emitting elements disposed in the second resin part. The method of claim 7,
The gap between the first light emitting device and the second light emitting device disposed closest to both sides of the partition wall is a gap between the first light emitting device disposed in the first resin part and the second light emitting device 2 Lighting module equal to the spacing between light-emitting elements.

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