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KR-20260064446-A - LIGHTING MODULE

KR20260064446AKR 20260064446 AKR20260064446 AKR 20260064446AKR-20260064446-A

Abstract

A lighting device according to an embodiment comprises a substrate having a plurality of light sources, a resin layer disposed on the substrate, a diffuser layer disposed on the resin layer, and a coating layer covering the diffuser layer and the resin layer, and may be disposed between the diffuser layer, the resin layer, and the coating layer.

Inventors

  • 김진호
  • 류승환

Assignees

  • 엘지이노텍 주식회사

Dates

Publication Date
20260507
Application Date
20250326
Priority Date
20241031

Claims (10)

  1. A substrate on which multiple light sources are arranged; A resin layer disposed on the above substrate; A diffuser layer disposed on the resin layer above; and It includes a coating layer covering the diffuser layer and the resin layer, and An adhesive layer is disposed between the coating layer and the resin layer, and A lighting device comprising a plurality of coating layers, wherein the above coating layer comprises
  2. In Article 1, The above plurality of coating layers, A first coating layer disposed on the adhesive layer and It includes a second coating layer disposed on the first coating layer, and The lighting device comprising either a colored material or a metallic material in the first coating layer.
  3. In Article 2, The first coating layer above A first-1 coating layer including a light-blocking material and A lighting device comprising a first-2 coating layer disposed on the first-1 coating layer and including either the colored material or the metallic material.
  4. In Paragraph 3, The above-mentioned first-1 coating layer is a lighting device comprising a plurality of pattern holes.
  5. In Paragraph 4, The above pattern hole is a lighting device including a pixel pattern.
  6. In Paragraph 4, The above pattern hole is a lighting device including a line pattern.
  7. In Paragraph 4, The second coating layer comprises either a matte or a glossy material. Lighting device.
  8. In any one of paragraphs 1 through 7, A lighting device having a coating layer thickness of 0.01 mm or less.
  9. In any one of paragraphs 1 through 7, A lighting device having a transmittance of the coating layer in the range of 15% to 20%.
  10. In any one of paragraphs 1 through 7, A lighting device in which the thickness of the coating layer is smaller than the thickness of the diffuser layer.

Description

Lighting device and lighting module including the same An embodiment of the invention relates to a lighting device and a lighting module including the same. Recently, lighting devices consisting of hundreds or thousands of small LEDs are being applied to automotive lighting modules. These lighting devices utilize pixel lighting technology, allowing each LED to be controlled independently; this enables adjustment of lighting according to the surrounding environment or the creation of various lighting effects. For example, based on pixel lighting or surface lighting technology, it is possible to create various unique signature lights, such as those that exhibit distinctive design characteristics. However, lighting modules according to conventional technology require an inner lens for light diffusion, and there was a problem in that the thickness and weight of the lighting device increased due to the inner lens. FIG. 1 is a perspective view of a lighting device according to an embodiment of the present invention. Figure 2 is a cross-sectional view of A-A' in Figure 1. Figure 3 is a cross-sectional view of B-B' in Figure 1. FIG. 4 shows a cross-section of a lighting device according to a second embodiment. FIG. 5 is a manufacturing flowchart of a lighting device according to a first embodiment. FIG. 6 is a manufacturing flowchart of a lighting device according to a second embodiment. FIGS. 7a to 7f show examples of lighting devices according to embodiments. Hereinafter, preferred embodiments of the invention will be described in detail with reference to the attached drawings. The technical concept of the present invention is not limited to 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. Furthermore, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a meaning generally understood by those skilled in the art to which the present invention belongs, unless explicitly and specifically defined otherwise. Terms used generally, such as those defined in advance, may be interpreted by considering their meaning in the context of the relevant technology. Additionally, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention. In this specification, the singular form 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. In addition, 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 intended merely to distinguish the component from other components and do not determine the essence, order, or sequence of the component. Furthermore, when it is stated that a component is "connected," "combined," or "connected" to another component, this may include not only cases where the component is directly connected, combined, or connected to the other component, but also cases where it is "connected," "combined," or "connected" due to another component located between the component and the other component. Additionally, when described as being formed or placed "upper or lower" of each component, "upper" or "lower" 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. Moreover, when expressed as "upper or lower," it may include the meaning of a downward direction as well as an upward direction relative to a single component. FIG. 1 is a perspective view of a lighting device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view along A-A' of FIG. 1, and FIG. 3 is a cross-sectional view along B-B' of FIG. 1. A lighting device (10) according to an embodiment may include a substrate (100), a plurality of light sources (150), a resin layer (200), a diffuser layer (300), and a coating layer (400). Additionally, although not illustrated, if the lighting device (10) according to an embodiment has a pixel lighting device, a partition may be provided between the plurality of light sources (150) and on the side forming the perimeter of the lighting device. For example, the partition may include a partition placed around each of the plurality of light sources (150). The partition may partition the plurality of light sources (150) to form a pixel area. The partition may block light interference between the plurality of light sources (150) and prevent the problem of light penetrating into adjacent pixel areas. The substrate (100) may include a printed circuit