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KR-20260064427-A - LIGHTING MODULE

KR20260064427AKR 20260064427 AKR20260064427 AKR 20260064427AKR-20260064427-A

Abstract

A lighting device according to an embodiment of the invention comprises a substrate, a plurality of light sources disposed on the substrate, and a pixel light having a partition disposed around each of the plurality of light sources, a light control layer disposed on the pixel light and having a plurality of light control units, and may have an air gap between the light control layer and the pixel light.

Inventors

  • 고영욱
  • 고광현
  • 김진호
  • 류승환

Assignees

  • 엘지이노텍 주식회사

Dates

Publication Date
20260507
Application Date
20250103
Priority Date
20241031

Claims (15)

  1. A substrate; a plurality of light sources disposed on the substrate, and a pixel light having a partition disposed around each of the plurality of light sources; A light control layer disposed on the pixel illumination and having a plurality of light control units; comprising having an air gap between the light control layer and the pixel illumination layer. Lighting device.
  2. In Article 1, The width of the above bulkhead has a first length, It has a second length from the upper surface of the above partition wall to the light control layer, and The first length above has 1/10 of the second length, Lighting device.
  3. In Article 2, The first length above has a length of 0.5 mm to 1.0 mm. Lighting device.
  4. In Paragraph 3, The above second length has a length of 10 mm to 15 mm, Lighting device.
  5. In any one of paragraphs 1 to 4, The above plurality of light control units are each driven individually, and The above plurality of light control units, Driving in either the first mode or the second mode, The first mode has a first transmittance, and the second mode has a second transmittance smaller than the first transmittance. Lighting device.
  6. In Article 5, The above first transmittance is 80% or more Lighting device.
  7. In Article 5, The second transmittance is 20 to 40%. Lighting device.
  8. In Article 5, The above light control unit is a PDLC (Polymer Dispersed Liquid Crystal). Lighting device.
  9. In Article 1, The above bulkhead is, Multiple first bulkheads and It includes a plurality of second partitions arranged perpendicularly to the first partition, and The distance between the first bulkheads is smaller than the distance between the second bulkheads Lighting device.
  10. Pixel lighting having multiple pixel regions; and It includes a plurality of light control units disposed on the pixel illumination, and The above plurality of light control units have a transmission mode when the power is turned on and a diffusion mode when the power is turned off, and A lighting device in which the plurality of light control units output pixel illumination by the transmission mode of the light control units or surface illumination by the diffusion mode according to the power supply being on or off.
  11. In Article 10, At least one of the plurality of light control units is a lighting device having a line shape with a long length in one direction.
  12. In Article 10, At least one of the plurality of light control units is a lighting device having a polygonal shape or a circular shape.
  13. In Article 10, At least one of the plurality of light control units is a lighting device having a length equal to the length of the pixel light.
  14. In Article 10, At least one of the plurality of light control units is a lighting device positioned between two adjacent light control units.
  15. In any one of paragraphs 10 through 14, The above light control unit is a lighting device that is a PDLC (Polymer Dispersed Liquid Crystal).

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, various unique signature lights based on pixel lighting or surface lighting technology can be created. However, conventional lighting modules have a technical limitation in that, when applying pixel lighting technology, surface lighting technology cannot be applied simultaneously because the boundaries of the pixels must be visible, making it impossible to create signature lighting that incorporates both functions. FIG. 1 is a drawing illustrating an example in which a lighting device according to an embodiment is applied to a vehicle. FIG. 2 is a perspective view of a lighting device according to an embodiment. Figure 3 is a cross-sectional view of A-A' in Figure 2. Figure 4 is a cross-sectional view of BB' of Figure 2. FIG. 5 is a cross-sectional view showing a first example of pixel lighting of a lighting device according to an embodiment. FIG. 6 is a cross-sectional view showing a second example of pixel lighting of a lighting device according to an embodiment. FIG. 7 is a cross-sectional view showing a third example of pixel lighting of a lighting device according to an embodiment. FIG. 8 schematically shows a light control unit according to an embodiment. FIG. 9 is a front view showing the lighting area and light control unit of a lighting device according to an embodiment. FIG. 10 is an example of a case where a light control layer according to an embodiment has four regions and operates in a first mode. FIG. 11 is an example of a case where a light control layer according to an embodiment has four regions and operates in a second mode. FIG. 12 is an example of a case where a light control layer according to an embodiment has four regions and drives a first mode and a second mode simultaneously. FIG. 13 is a drawing for explaining pixel lighting of a lighting device according to an embodiment. FIG. 14 shows a case where the light control layer according to an embodiment has two regions. FIG. 15 shows a case where the light control layer according to an embodiment has three regions. FIG. 16 shows a case where the light control layer according to an embodiment has five regions. FIG. 17 is an example image of a lighting device according to an embodiment of the present invention. 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