Lighting device and lighting module comprising same

Abstract

A lighting device, according to one embodiment, comprises: a substrate; a plurality of light sources arranged on the substrate; a partition wall surrounding at least one of the plurality of light sources and spaced apart from the plurality of light sources; and a pattern mask disposed on the light sources. The pattern mask comprises: a pattern portion provided with a plurality of optical patterns; and a support portion surrounding the pattern portion, wherein the support portion may be thicker than the pattern portion.

Description

Lighting device and lighting module including the same

[0001] The embodiments relate 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, a pattern mask placed on a light source in a lighting device has pattern holes according to the area and performs the role of controlling light emitted from the light source. However, when forming pattern holes, the thickness of the pattern mask increases the difficulty of etching, pressing, laser processes, etc., and there is a problem that the shape of the pattern holes becomes non-uniform.

[0005] In addition, if the pattern mask is made thin to solve the above problem, the rigidity is weakened, causing bending, and there is a problem of reduced reliability of the pattern mask.

[0006] One of the technical challenges of the embodiment is to reduce the difficulty of the process when forming the optical pattern of the pattern mask and to improve the design freedom and precision of the optical pattern.

[0007] In addition, one of the technical challenges of the embodiment is to improve reliability by enhancing the rigidity of the pattern mask.

[0008] In addition, one of the technical challenges of the embodiment is to improve the light efficiency of the lighting device.

[0009] In addition, one of the technical challenges of the embodiment is to prevent the pattern mask from detaching and to improve bonding reliability.

[0010] The technical problems of the embodiments are not limited to those described in this section and include those that can be identified through the description of the invention.

[0011] A lighting device according to an embodiment comprises: a substrate; a plurality of light sources disposed on the substrate; a partition wall surrounding at least one of the plurality of light sources and spaced apart from the plurality of light sources; and a pattern mask disposed on the light source; wherein the pattern mask comprises a pattern portion having the plurality of optical patterns and a support portion surrounding the pattern portion, and the thickness of the support portion may be greater than the thickness of the pattern portion.

[0012] In addition, in the embodiment, the support member may overlap vertically with the partition wall.

[0013] Additionally, in the embodiment, the pattern portion may not overlap vertically with the partition wall.

[0014] In addition, in the embodiment, the upper surface of the support member may be higher than the upper surface of the pattern member.

[0015] In addition, in the embodiment, the lower surface of the support member and the lower surface of the pattern member may be arranged on the same plane.

[0016] In addition, in the embodiment, the upper surface of the support member may be placed on the same plane as the upper surface of the pattern member.

[0017] In addition, in the embodiment, the lower surface of the pattern portion may be higher than the lower surface of the support portion.

[0018] In addition, in the embodiment, the support member and the pattern member may be connected by a curved surface.

[0019] In addition, in the embodiment, the roughness of the upper surface of the pattern portion and the roughness of the upper surface of the support portion may be different.

[0020] In addition, in the embodiment, the roughness of the upper surface of the pattern portion may be smaller than the roughness of the upper surface of the support portion.

[0021] In addition, in the embodiment, the roughness of the upper surface of the support member may correspond to the roughness of the lower surface of the pattern member.

[0022] In addition, in the embodiment, the support member includes a first support member and a second support member disposed below the first support member, and

[0023] The first support member and the second support member may not overlap with the optical pattern in the horizontal direction.

[0024] In addition, in the embodiment, the horizontal width of the second support member may be larger than the horizontal width of the first support member.

[0025] Additionally, in the embodiment, the horizontal width of the support member may be greater than or equal to the horizontal width of the bulkhead.

[0026] Additionally, in the embodiment, the support member includes a concave portion at the bottom, and the partition wall includes a protrusion at the top, and the concave portion and the protrusion may interlock with each other.

[0027] The lighting device according to the embodiment has the technical effect of reducing the difficulty of the process when forming an optical pattern and improving the design freedom and precision of the optical pattern, as the pattern portion of the pattern mask has a thinner thickness than the support portion.

[0028] For example, in the embodiment, when manufacturing a pattern mask, the thickness of the pattern portion is primarily formed thinner than the support portion, and then an optical pattern is secondarily formed on the pattern portion. This reduces the difficulty of the process and can improve the design freedom and precision of the optical pattern.

[0029] In addition, the embodiment has the technical effect of improving reliability by enhancing the rigidity of the pattern mask in the lighting device.

[0030] For example, in an embodiment, the thickness of the support member located on the partition wall in the pattern mask is greater than the thickness of the pattern member, and the horizontal width of the support member is equal to or greater than the horizontal width of the partition wall, so the rigidity of the pattern mask can be improved and reliability can be improved.

[0031] In addition, the embodiment has a technical effect that can improve the light efficiency of the lighting device.

[0032] For example, in an embodiment, the reflectance is improved as the roughness of the first region in the pattern portion of the pattern mask is smaller than the roughness of the support portion, so that the light efficiency can be improved.

[0033] In addition, the embodiment has the technical effect of improving the bonding reliability of the pattern mask and the barrier in a lighting device.

[0034] For example, in the embodiment, the support portion of the pattern mask has a concave portion and the partition has a protruding portion, and as the concave portion and the protruding portion interlock with each other, the pattern mask and the partition can be assembled without a separate adhesive, the bonding reliability can be improved, and the pattern mask can be prevented from detaching from the partition when the substrate has flexible characteristics.

[0035] The technical effects of the embodiments are not limited to those described in this section and include those that can be understood through the description of the invention.

[0036] FIG. 1 is a conceptual diagram of a lighting device according to an embodiment.

[0037] FIG. 2 is a conceptual diagram of a pattern mask for a lighting device according to an embodiment.

[0038] Figure 3 is a manufacturing process diagram of a pattern mask for a lighting device according to an embodiment.

[0039] FIG. 4 is a cross-sectional view of a lighting device according to an embodiment.

[0040] FIG. 5 is a cross-sectional view of a lighting device according to an embodiment.

[0041] FIG. 6 is a conceptual diagram of a lighting device according to an embodiment.

[0042] FIG. 7 is a plan view of a vehicle with a lighting device applied according to an embodiment of the invention.

[0043] Figure 8 is an example of a display device combined with the vehicle of Figure 7.

[0044] Figures 9 (a) and (b) are examples of symbols or characters displayed by the display device of Figure 8.

[0045] Hereinafter, preferred embodiments of the invention will be described in detail with reference to the attached drawings.

[0046] 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.

[0047] 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.

[0048] Furthermore, the terms used in the examples are for the purpose of describing the examples and are not intended to limit the invention.

[0049] 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.

[0050] 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.

[0051] Additionally, where described as being formed or placed on the "top or bottom" of each component, the top or bottom 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.

[0052] In addition, when expressed as "up" or "down," it can include the meaning of a downward direction as well as an upward direction relative to a single component.

[0053] The lighting device according to the invention can be applied to various lamp devices requiring lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices.

[0054] 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.

[0055] 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.

[0056]

[0057] (Example)

[0058] FIG. 1 is a conceptual diagram of a lighting device according to an embodiment. Referring to FIG. 1, the lighting device (100) according to the embodiment may have a plurality of pixel regions (111) arranged in a first horizontal direction and a second horizontal direction perpendicular to the first horizontal direction, and at least one light source (120) may be disposed within each pixel region (111).

[0059] The above lighting device (100) displays images or information such as symbols, logos, symbols, or characters by pixel areas (111) in which at least one light source (120) is placed, and can be defined as a lighting module or a display lamp.

[0060] In addition, the lighting device (100) can be implemented as pixel lighting using pixel regions (111).

[0061] The lighting device (100) controls the operation of a light source (120) within a pixel area (111) through a control unit (not shown) according to the image or information to be displayed, and displays the image or information by the light extracted through the pixel area (111) by the turn-on or turn-off of the light source (120).

[0062] The light source (120) placed within the pixel area (111) is turned on or turned off depending on whether power is supplied. The pixel area (111) can be implemented as a grid type or a unit cell type and can function as a pixel, which is the smallest unit constituting an image or information. The pixel area (111) can be defined as a unit pixel or a unit light-emitting part.

[0063] The top view shape of the multiple pixel areas (111) may be a polygonal shape such as a square shape or a triangular shape, or may be provided as a circle or an ellipse shape.

[0064] Next, referring to FIG. 1, the lighting device (100) may include a substrate (110), a light source (120), a partition (115), a pattern mask (130), and a diffusion layer (not shown).

[0065] The substrate (110) may include a printed circuit board (PCB). For example, the substrate (110) 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.

[0066] The substrate (110) may be a single-layer substrate having a single wiring layer or a multilayer substrate having a plurality of wiring layers. The substrate (110) may include at least one of a wiring layer, an insulating layer, and a via.

[0067] Additionally, the wiring layer may be electrically connected to a light source (120). A reflective layer (not shown) may be additionally disposed on the substrate (110) to reflect light emitted from the light source (120) upward, thereby improving light efficiency.

[0068] The color of the above-mentioned reflective layer (not shown) may be white, but is not limited thereto. Additionally, if the above-mentioned substrate (110) is a flexible PCB, the above-mentioned lighting device (100) may have flexible characteristics.

[0069] The light source comprises a plurality of light sources and is disposed on the substrate (110) and can emit light in a direction toward the pattern mask (130) (a vertical direction perpendicular to the first horizontal direction and the second horizontal direction).

[0070] The plurality of light sources (120) may be arranged in parallel in a first horizontal direction. Additionally, the plurality of light sources (120) may be arranged in parallel along the first horizontal direction and the second horizontal direction.

[0071] For example, a plurality of light sources (120) can be arranged in n rows (n is an integer greater than or equal to 1) and m columns (m is an integer greater than or equal to 1).

[0072] The light source (120) is a light-emitting device having a light-emitting diode chip (LED Chip), and may include various forms such as a package in which the light-emitting diode chip is packaged, a flip-chip, or a CSP (Chip scale package).

[0073] The light-emitting diode chip can emit at least one of blue, red, green, ultraviolet (UV), or infrared light, and the light source (120) can emit at least one of white, blue, red, green, or infrared light, and can emit light in a colored light such as white, blue, or green.

[0074] The light-emitting element of the light source (120) includes a mini LED chip or a micro LED chip.

[0075] A diffusion layer (not shown) may be disposed on the lower or upper surface of the pattern mask (130). The diffusion layer can realize a surface light source by distributing the light emitted from the light source (120) into uniform light.

[0076] The above diffusion layer (not shown) may include a resin material. Additionally, the above diffusion layer (not shown) may include a diffusing agent inside, and the diffusing agent may include at least one of Al2O3, TiO2, SiO2, ZnO, and ZrO2.

[0077] Additionally, the above partition (115) can prevent interference between adjacent pixel areas (111). The spacing of the above partition (115) may define the width of the pixel area (111), but is not limited thereto.

[0078] The above partition (115) may include a resin material or a metal material. For example, the above partition (115) may include a silicone or epoxy material, and if it includes a metal material, it may be an alloy of at least one or two of aluminum (Al), nickel (Ni), copper (Cu), and silver (Ag).

[0079] Additionally, the above partition (115) may include a black color. For example, the above partition (115) may include a light-absorbing material such as carbon black within a resin material. Additionally, the above partition (115) may include a reflective material such as TiO2, SiO2, or Al2O3.

[0080] Additionally, a pattern mask (130) may be placed on the light source (120). The pattern mask (130) can control the path of light by partially blocking or reflecting the light emitted from the light source (120), and can also prevent hot spots occurring in areas adjacent to the light source (120).

[0081] An air gap (118) may be disposed between the light source (120) and the pattern mask (130). Additionally, a diffusion layer (not shown) may be disposed between the light source (120) and the pattern mask (130), but is not limited thereto.

[0082] Meanwhile, the pattern mask (130) may include a support portion (134) and a pattern portion (136). The support portion (134) is placed on the partition wall (115) and may overlap vertically with the partition wall.

[0083] The vertical thickness of the support portion (134) and the vertical thickness of the pattern portion (136) may be different. Specifically, the vertical thickness of the support portion (134) may be greater than the vertical thickness of the pattern portion (136).

[0084] Additionally, the pattern portion (136) may overlap vertically with the light source (120). Additionally, the pattern portion (136) may not overlap vertically with the partition wall (115).

[0085] Additionally, the support portion (134) may not include an optical pattern, and the pattern portion (136) may include an optical pattern.

[0086] Accordingly, the embodiment has the technical effect of making it easier to form an optical pattern by thinning the thickness of the pattern portion (136), which is an effective area receiving light from the light source (120), and having the support portion (134) arranged to have a thick thickness on the partition (115) to improve the rigidity of the pattern mask (130).

[0087]

[0088] FIG. 2 is a conceptual diagram of a pattern mask for a lighting device according to an embodiment. Referring to FIG. 2, a pattern mask array (131) may have a plurality of pattern masks (130) in which a pattern portion (136) is formed in an effective portion after the effective portion is primarily processed on a plate having a certain thickness. Each of the plurality of pattern masks (130) may include a pattern portion (136) and a support portion (134).

[0089] Additionally, the pattern portion (136) may include a central portion (137) and an outer portion (138), and the distribution density or size of the optical pattern formed in the central portion (137) and the outer portion (138) may differ, but is not limited thereto.

[0090]

[0091] FIG. 3 is a manufacturing process diagram of a pattern mask for a lighting device according to an embodiment. First, referring to FIG. 3(a), the embodiment may include a step of preparing a plate (129). The plate (129) may include a metal such as aluminum (Al).

[0092] Additionally, the above-mentioned disc (129) may include a polymer or silicone, but is not limited thereto. In one embodiment, the disc (129) may be 50 μm to 120 μm. However, this is only one embodiment and the present disclosure is not limited thereto.

[0093] Referring to (b), a pattern portion (136) which is an effective area and a support portion (134) which is an ineffective area can be formed on the above-mentioned plate. The pattern portion (136) can be formed using a press process, an etching process, a laser process, etc., but is not limited thereto.

[0094] Accordingly, the thickness of the pattern portion (136) may be formed to be thinner than the thickness of the support portion (134). In one embodiment, the thickness of the pattern portion (136) may be 20 μm to 50 μm, and the thickness of the support portion (134) may be 50 μm to 70 μm. However, this is merely one embodiment, and the present disclosure is not limited thereto.

[0095] Next, referring to (c), an optical pattern (140) can be formed on the pattern portion (136). The optical pattern (140) may have a hole shape that penetrates the pattern portion (136).

[0096] Additionally, the optical pattern (140) may have a distribution density or size difference depending on the area in the pattern portion (136).

[0097] For example, the density of the optical pattern (140) can be smaller the closer it is to the optical part (120).

[0098] As another example, the size of the optical pattern (140) can be reduced as it gets closer to the optical part (120).

[0099] The above optical pattern (140) may be formed using a press process, an etching process, a laser process, etc., but is not limited thereto.

[0100] Accordingly, the embodiment has the technical effect of improving the process speed and reducing the difficulty, and making the shape of the optical pattern (140) uniform, by first forming a thin pattern portion (136) and then secondarily forming an optical pattern (140).

[0101] In addition, the embodiment may perform additional processes such as painting, plating, coating, and polishing to improve reflectivity after the formation of the optical pattern (140).

[0102]

[0103] FIG. 4 is a cross-sectional view of a pattern mask (130) for a lighting device according to an embodiment. Referring to FIG. 4, the pattern mask (130) may include a support portion (134) and a pattern portion (136).

[0104] The above support portion (134) is an area placed on a partition wall (not shown), and the above pattern portion (136) may be an area through which light emitted from a light source (not shown) passes.

[0105] In addition, the vertical thickness of the support portion (134) and the vertical thickness of the pattern portion (136) may be different.

[0106] Specifically, the thickness of the support portion (134) may be greater than the thickness of the pattern portion (136).

[0107] Additionally, a plurality of optical patterns (140) may be disposed on the pattern portion (136). The plurality of optical patterns (140) may have different distributions or sizes depending on the area of ​​the pattern portion (136).

[0108] Accordingly, the embodiment has the technical effect of reducing the difficulty of the process when forming the optical pattern (140) and improving the design freedom and precision of the optical pattern (140) as the pattern portion (136) has a thinner thickness than the support portion (134).

[0109] In addition, the embodiment has the technical effect of ensuring the rigidity of the pattern mask (130) and preventing bending by having the support portion (134) thicker than the pattern portion (136), thereby improving reliability.

[0110] Meanwhile, the roughness of the upper surface of the support member (134) and the roughness of the first region (136-1) located on the upper surface of the pattern member (136) may be different.

[0111] Specifically, the first region (136-1) of the pattern portion (136) may be smoother than the upper surface of the support portion (134).

[0112] Accordingly, the embodiment has a technical effect of improving light efficiency by reflecting light that has passed through the optical pattern (140) of the pattern mask (130) back toward the pattern mask (130) by other components such as a diffusion layer (not shown), and is reflected by the first region (136-1) of the pattern portion (136).

[0113] Additionally, the roughness of the upper surface of the support member (134) can correspond to the roughness of the second region (136-2) located on the lower surface of the pattern member (136).

[0114] Specifically, the roughness of the upper surface of the support member (134) and the roughness of the second region (136-2) located on the lower surface of the pattern member (136) may be the same. Meanwhile, this is merely one embodiment and the present disclosure is not limited thereto.

[0115] When the pattern mask (130) of the embodiment is assembled to a lighting device, it may include cases where the first region (136-1) of the pattern portion (136) is assembled so as not to face the light source (120) and faces upward, or cases where it is assembled so as to face the light source (120) and faces downward.

[0116]

[0117] FIG. 5 is a cross-sectional view of a pattern mask (130) for a lighting device according to an embodiment. Referring to FIG. 5, the pattern mask (130) may include a support portion (134) and a pattern portion (136).

[0118] A step may be formed between the support portion (134) and the pattern portion (136). Additionally, the space between the support portion (134) and the pattern portion (136) may be connected by a curved surface.

[0119] Specifically, referring to FIG. 5, the upper surface of the support member (134) may be higher than the upper surface of the pattern member (136). That is, the first region (136-1) of the pattern member (136) may be assembled so as to face upward so as not to face the light source (120).

[0120] In this case, the area connecting the support member (134) and the pattern member (136) may include a shape in which one end extends from the upper surface of the support member (134) and becomes lower in height as it approaches the pattern member (136), and the other end extends from the upper surface of the pattern member (136) and becomes higher in height as it approaches the support member (134).

[0121] As another example, the upper surface of the support member (134) may have the same height as the upper surface of the pattern member (136). That is, the first region (136-1) of the pattern member (136) may be assembled so as to face downwards toward the light source (120).

[0122] In this case, the area connecting the support member (134) and the pattern member (136) may include a shape in which one end extends from the lower surface of the support member (134) and becomes higher as it approaches the pattern member (136), and the other end extends from the lower surface of the pattern member (136) and becomes lower as it approaches the support member (134).

[0123] Meanwhile, this is merely one example, and the present disclosure is not limited thereto.

[0124] Meanwhile, referring to FIG. 5, the support member (134) may include a first support member (134-1) and a second support member (134-2) positioned below the first support member (134-1). The upper surface of the first support member (134-1) may be positioned higher than the upper surface of the pattern member (136). Additionally, the lower surface of the second support member (134-2) may be positioned lower than the lower surface of the pattern member (136).

[0125] Additionally, the first support member (134-1) and the second support member (134-2) may not overlap with the optical pattern (140) in the horizontal direction.

[0126] In FIG. 5, the first support member (134-1) and the second support member (134-2) are shown to have the same width and the same thickness, but they may have different widths or thicknesses.

[0127] For example, the second support member (134-2) may have a wider width than the first support member (134-1).

[0128] Accordingly, the embodiment has the technical effect of improving alignment and adhesion reliability with the bulkhead by controlling the horizontal width of the second support member (134-2) in contact with the bulkhead (not shown).

[0129] Meanwhile, the sum of the thicknesses of the first support part (134-1) and the second support part (134-2) may be greater than the thickness of the pattern part (136).

[0130] Accordingly, the embodiment has the technical effect of improving reliability by improving the rigidity of the pattern mask (130).

[0131]

[0132] FIG. 6 is a conceptual diagram of a lighting device (101) according to an embodiment. Referring to FIG. 6, the lighting device (101) according to an embodiment may include a substrate (110), a light source (120), a partition (115), and a pattern mask (130). Meanwhile, the partition (115) and the pattern mask (130) may have an assembly structure.

[0133] Specifically, the above partition (115) may be provided with a protrusion (116) on its upper side. The protrusion (116) may have a shape protruding from the partition (115), and the horizontal width of the protrusion (116) may be smaller than the horizontal width of the partition (115).

[0134] In the present disclosure, the horizontal width may refer to the width when measured in a first horizontal direction passing through any one light source (120).

[0135] Additionally, the pattern mask (130) may have a concave portion (142) at its lower end. Specifically, the concave portion (142) is positioned on the lower surface of the support portion (134) of the pattern mask (130) and may have a shape corresponding to the protrusion (116) of the partition wall (115).

[0136] Additionally, the protrusion (116) may overlap with the pattern mask (130) in a horizontal direction. Specifically, the protrusion (116) may overlap vertically with the support portion (134) and / or the pattern portion (136).

[0137] Referring to FIG. 6, the upper surface of the support portion (134) may be higher than the upper surface of the pattern portion (136). Additionally, the lower surface of the support portion (134), excluding the concave portion (142), may be placed on the same plane as the lower surface of the pattern portion (136). Furthermore, the upper surface of the protrusion (116) may be positioned higher than the lower surface of the pattern portion (136).

[0138] Meanwhile, the present disclosure is not limited thereto, and unlike the embodiment of FIG. 6, the upper surface of the support portion (136) and the upper surface of the pattern portion (136) may be arranged on the same plane, and the lower surface of the support portion (134), excluding the concave portion, may be positioned lower than the lower surface of the pattern portion (136). Also, the upper surface of the protrusion (116) may be positioned higher or lower than the lower surface of the pattern portion (136).

[0139] The concave portion (142) of the pattern mask (130) and the protrusion of the partition wall (115) can be assembled by interlocking with each other.

[0140] Accordingly, the embodiment can assemble the pattern mask (130) and the partition wall (115) without a separate adhesive, and has the technical effect of improving bonding reliability.

[0141] In addition, when the pattern mask (130) and the substrate (110) have flexible characteristics, there is a technical effect of preventing the pattern mask (130) from detaching from the partition (115).

[0142] Additionally, the horizontal width (W1) of the support portion (134) of the pattern mask (130) may be equal to or greater than the horizontal width (W2) of the partition wall (115). Accordingly, the embodiment has the technical effect of improving reliability by enhancing the rigidity of the pattern mask (130) through the support portion (134).

[0143]

[0144] FIG. 7 is a plan view of a vehicle with a lighting device according to an embodiment, FIG. 8 is a drawing showing an example of a taillight and indicator lamp of the vehicle of FIG. 7, and FIG. 9 is an example showing a symbol or character of an indicator lamp displayed by the lighting device of FIG. 8.

[0145] Referring to FIGS. 7 and 8, the front lamp (2) in the moving body or vehicle (1) may include one or more lighting modules, and by individually controlling the driving timing of these lighting modules, it may provide not only the function of a normal headlight but also additional functions such as a welcome light or a celebration effect when the driver opens the vehicle door.

[0146] The above lamps may be applied to daytime running lights, high beams, low beams, fog lights, or turn signals. The taillights (2) of the vehicle (1) may have a plurality of lamp units, and the lamp units may be provided as taillights, brake lights, reverse lights, and turn signal lamps, etc.

[0147] The lighting device (1000) may be positioned on one side or the other side relative to the taillight (2) of the vehicle (1), positioned on the upper or lower side, or installed in a part of the rear of the vehicle. The lighting device (1000) may be installed on the side of the vehicle or inside the vehicle.

[0148] This lighting device (1000) displays images or information such as symbols, logos, symbols, or characters through a plurality of pixel areas (111) and is provided as a lighting module or indicator lamp. That is, as shown in (a) and (b) of FIG. 9, it can be displayed as an exclamation mark such as ! or as a character such as STOP that can be seen by other drivers.

[0149] The lighting device (1000) has pixel regions (111) that have a double partition structure, and the double partition structure can prevent light interference or light leakage between adjacent pixel regions (111). Accordingly, it can prevent a decrease in the brightness of the pixels and provide a lighting device with a clearer contrast ratio.

[0150] In addition, by providing the lighting device (1000) with a thickness of less than 4mm or 3mm or less, rigid or flexible, the lighting device (1000) can be closely coupled to the surface of the housing or bracket of the vehicle. The lighting device (1000) can be applied to a headlight or taillight to function as a headlight or taillight, or display an image or information in the headlight or taillight.

[0151]

[0152] The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment.

[0153] Furthermore, the features, structures, effects, etc. exemplified in each embodiment may be combined or modified and implemented in other embodiments by a person skilled in the art to which the embodiments belong. Therefore, details regarding such combinations and modifications should be interpreted as being included within the scope of the present invention.

[0154] Furthermore, although the invention has been described above with reference to embodiments, this is merely illustrative and does not limit the invention. Those 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.

[0155] For example, each component specifically shown in the embodiments may be implemented with modifications. Furthermore, differences related to such modifications and applications should be interpreted as being included within the scope of the invention as defined in the appended claims.

[0156] The lighting device according to the invention can be applied to various lamp devices requiring lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices.

[0157] 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.

[0158] 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.

Claims

1. Substrate; A plurality of light sources disposed on the above substrate; A partition wall surrounding at least one of the plurality of light sources and spaced apart from the plurality of light sources; and It includes a pattern mask disposed on the light source; and The above pattern mask is, It includes a pattern portion having the above-mentioned plurality of optical patterns and a support portion surrounding the pattern portion, A lighting device having a thickness greater than that of the support portion and the pattern portion.

2. In Paragraph 1, The above support member is a lighting device that overlaps vertically with the above bulkhead.

3. In Paragraph 2, A lighting device in which the above pattern portion does not overlap vertically with the above partition.

4. In Paragraph 1, A lighting device in which the upper surface of the support member is higher than the upper surface of the pattern member.

5. In Paragraph 4, A lighting device in which the lower surface of the support portion and the lower surface of the pattern portion are arranged on the same plane.

6. In Paragraph 1, A lighting device in which the upper surface of the support member is positioned in the same plane as the upper surface of the pattern member.

7. In Paragraph 6, A lighting device in which the lower surface of the pattern portion is higher than the lower surface of the support portion.

8. In Paragraph 1, A lighting device in which the support portion and the pattern portion are connected by a curved surface.

9. In Paragraph 1, A lighting device in which the roughness of the upper surface of the pattern portion and the roughness of the upper surface of the support portion are different.

10. In Paragraph 9, A lighting device in which the roughness of the upper surface of the pattern portion is smaller than the roughness of the upper surface of the support portion.

11. In Paragraph 9, A lighting device in which the roughness of the upper surface of the support portion corresponds to the roughness of the lower surface of the pattern portion.

12. In Paragraph 1, The above support member includes a first support member and a second support member disposed below the first support member, and A lighting device in which the first support member and the second support member do not overlap with the optical pattern in a horizontal direction.

13. In Paragraph 12, A lighting device in which the horizontal width of the second support member is greater than the horizontal width of the first support member.

14. In Paragraph 1, A lighting device in which the horizontal width of the support member is greater than or equal to the horizontal width of the bulkhead.

15. In Paragraph 1, The above support member includes a concave portion at the bottom, and The above bulkhead includes a protrusion on the upper part, and A lighting device in which the above-mentioned concave portion and the above-mentioned protrusion interlock with each other.

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