公开(公告)号：US20250052998A1

公开(公告)日：2025-02-13

申请号：US18722265

申请日：2021-12-21

Applicant: LG ELECTRONICS INC.

Inventor： Gunyoung HONG ,  Younggil YOO ,  Minsung KIM ,  Kyungpil KIM ,  Bokyung KANG ,  Seungmi BAEK

IPC: G02B26/00 ,  G03B21/20

Abstract: An image projection device and an image projection device comprising the same are disclosed. A phosphor wheel according to an embodiment of the present disclosure comprises a substrate, a reflective light-emission layer disposed on the substrate, and a phosphor layer disposed on the reflective light-emission layer, wherein the reflective light-emission layer includes resin and a phosphor having a higher heat conductivity than that of the resin. Accordingly, high-efficiency light output and color purity improvement are possible.

公开(公告)号：US20240184190A1

公开(公告)日：2024-06-06

申请号：US18574614

申请日：2021-07-12

Applicant: LG ELECTRONICS INC.

Inventor： Bokyung KANG ,  Gunyoung HONG ,  Younggil YOO ,  Minsung KIM ,  Kyungpil KIM ,  Seungmi BAEK

IPC: G03B21/20 ,  C09K11/77

CPC classification number: G03B21/204 ,  C09K11/7774

Abstract: An image projection apparatus is disclosed. The image projection apparatus according to an embodiment of the present disclosure includes: a light source configured to output blue light; and a phosphor wheel configured to output a plurality of colors of light based on the blue light incident upon rotation, wherein the phosphor wheel includes: a substrate; a yellow phosphor disposed in a first region on the substrate for output of yellow light; and a green phosphor disposed in a second region on the substrate for output of green light, wherein the green phosphor includes (Lu1−xYx)3Al5O12, with 0

公开(公告)号：US20240282892A1

公开(公告)日：2024-08-22

申请号：US18570868

申请日：2021-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Younggil YOO ,  Gunyoung HONG ,  Minsung KIM ,  Kyungpil KIM ,  Bokyung KANG ,  Seungmi BAEK

IPC: H01L33/50 ,  H01L25/16

CPC classification number: H01L33/507 ,  H01L25/167

Abstract: The display device includes a light source that generates first light, a conversion layer that outputs a plurality of lights using the first light, and a color filter layer.
The conversion layer includes first to third conversion layers, and the color filter layer includes first to third color filters. The first conversion layer and the second conversion layer may include the same material.
The first conversion layer and the first color filter may convert the first dominant wavelength of the first light to output second light having a second frequency. The second dominant wavelength of the second light may be located at the first color vertex of the color reproduction rate standard.

公开(公告)号：US20230280583A1

公开(公告)日：2023-09-07

申请号：US18012875

申请日：2020-06-30

Applicant: LG ELECTRONICS INC.

Inventor： Minsung KIM ,  Gunyoung HONG ,  Bokyung KANG ,  Seungmi BAEK

IPC: G02B26/00 ,  G03B21/20 ,  G03B21/16

CPC classification number: G02B26/008 ,  G03B21/16 ,  G03B21/204 ,  G03B21/2066

Abstract: A phosphor wheel comprising: a substrate having a recess, a phosphor layer disposed in the recess, and a first reflection layer surrounding the substrate. Thus, heat emission efficiency is increased, and it is possible to prevent defects such as cracking or discolouration of the phosphor layer.

公开(公告)号：US20250022990A1

公开(公告)日：2025-01-16

申请号：US18715672

申请日：2022-01-10

Applicant: LG ELECTRONICS INC.

Inventor： Seungmi BAEK ,  Gunyoung HONG ,  Younggil YOO ,  Minsung KIM ,  Kyungpil KIM ,  Bokyung KANG

IPC: H01L33/50 ,  H01L25/075

Abstract: The present invention is applicable to display device-related technical fields and relates to, for example, a display device using a micro light-emitting diode (LED). The present invention may comprise: a substrate; partition walls which are arranged on the substrate to define a plurality of hexagonal unit pixel areas forming a honeycomb shape; semiconductor light-emitting elements each of which is disposed in each of the unit pixel areas to form each unit pixel; color conversion layers which convert light emitted from the semiconductor light-emitting elements into colors corresponding to the respective unit pixel areas; a porous layer which is disposed on the partition walls and in which a plurality of through-holes are formed; and color filter layers which are disposed on the porous layer.

公开(公告)号：US20230066523A1

公开(公告)日：2023-03-02

申请号：US17796466

申请日：2020-01-31

Applicant: LG ELECTRONICS INC.

Inventor： Bokyung KANG ,  Gunyoung HONG ,  Younggil YOO ,  Minsung KIM ,  Kyungpil KIM ,  Seungmi BAEK

IPC: G02B26/00 ,  H04N9/31 ,  C09K11/62 ,  C09K11/77

Abstract: A color wheel according to an embodiment of the present invention comprises: a basic fluorescent body having a basic light-emitting wavelength; and at least one modified fluorescent body having at least one light-emitting wavelength different from the basic light-emitting wavelength, wherein the basic fluorescent body comprises Y3Al5O12 and the modified fluorescent body comprises Y3(GaxAl(1-x))5O12:Ce in which gallium is doped on the basic fluorescent body