公开(公告)号：US09807843B2

公开(公告)日：2017-10-31

申请号：US15191022

申请日：2016-06-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Won Hoe Koo

IPC: H05B37/02 ,  H05B33/08 ,  H01L33/56 ,  H01L33/50 ,  H01L27/15 ,  F21K9/235 ,  F21K9/238 ,  F21K9/237 ,  F21V29/77 ,  F21Y115/10 ,  F21Y113/13

CPC classification number: H05B33/0854 ,  F21K9/235 ,  F21K9/237 ,  F21K9/238 ,  F21V29/77 ,  F21Y2113/13 ,  F21Y2115/10 ,  H01L27/153 ,  H01L33/502 ,  H01L33/56 ,  H01L2224/32225 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/48237 ,  H01L2224/73265 ,  H01L2924/181 ,  H05B33/0866 ,  H05B33/0869 ,  H05B37/0272 ,  Y02B20/383 ,  H01L2924/00014 ,  H01L2924/00012 ,  H01L2924/00

Abstract: An LED lighting apparatus may comprise a white light emitting module including a first white LED package emitting first white light corresponding to a quadrangular region defined by (0.3100, 0.3203), (0.3082, 0.3301), (0.3168, 0.3388) and (0.3179, 0.3282) in the CIE 1931 chromaticity diagram, a second white LED package emitting second white light corresponding to a quadrangular region defined by (0.4475, 0.3994), (0.4571, 0.4173), (0.4695, 0.4207) and (0.4589, 0.4021) in the CIE 1931 chromaticity diagram, a green LED package emitting green light having a peak wavelength of 520 nm to 545 nm, and a driving controller controlling levels of luminous flux of the first white light and the second white light to select a color temperature of desired white light and controlling a luminous flux of the green LED package so as to reduce a difference between color coordinates corresponding to the selected color temperature of the white light, and a black body locus.

公开(公告)号：US10685939B2

公开(公告)日：2020-06-16

申请号：US16243363

申请日：2019-01-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jae Sung You ,  Yun Tae Hwang ,  Ho Young Song ,  Won Hoe Koo ,  Jae Chul Kim ,  Ho Sun Paek

IPC: H01L25/075 ,  F21V23/00 ,  H01L33/54 ,  F21V29/70 ,  H01L33/60 ,  H01L33/50 ,  F21Y115/10 ,  H01L33/62 ,  H05B45/20

Abstract: A white LED module includes a circuit board, at least one first LED light source on the circuit board and emitting a first white light having a first color temperature, at least one second LED light source on the circuit board and emitting a second white light having a second color temperature, higher than the first color temperature, a wiring structure in the circuit board to selectively drive the at least one first LED light source and the at least one second LED light source, and a transparent encapsulant on the circuit board, to cover the at least one first LED light source and the at least one second LED light source. The transparent encapsulant includes a transparent resin and a light-scattering powder in the transparent resin.

公开(公告)号：US10527271B2

公开(公告)日：2020-01-07

申请号：US15652043

申请日：2017-07-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Won Hoe Koo ,  Il Seok Lee ,  Dong Hyuk Kim

IPC: F21V23/04 ,  H05B33/08 ,  F21Y115/10 ,  F21Y113/13

Abstract: An LED lighting device is provided. The LED lighting device may include a light source configured to emit a light of first color temperature, second color temperature, and third color temperature and a switch electrically connected to the light source to control the light source to emit the lights of the first color temperature, the second color temperature, and the third color temperature, respectively. The light source includes a first light source configured to emit a light of a first color temperature, and a second light source configured to emit a light of a second color temperature that is different from the first color temperature, and the light source emits a light of a third color temperature between the first and second color temperatures when the switch parallel-connects the first light source and the second light source.

公开(公告)号：US20190371768A1

公开(公告)日：2019-12-05

申请号：US16243363

申请日：2019-01-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jae Sung YOU ,  Yun Tae Hwang ,  Ho Young Song ,  Won Hoe Koo ,  Jae Chul Kim ,  Ho Sun Paek

IPC: H01L25/075 ,  F21V23/00

Abstract: A white LED module includes a circuit board, at least one first LED light source on the circuit board and emitting a first white light having a first color temperature, at least one second LED light source on the circuit board and emitting a second white light having a second color temperature, higher than the first color temperature, a wiring structure in the circuit board to selectively drive the at least one first LED light source and the at least one second LED light source, and a transparent encapsulant on the circuit board, to cover the at least one first LED light source and the at least one second LED light source. The transparent encapsulant includes a transparent resin and a light-scattering powder in the transparent resin.