WO2013073816A1 - Module de source lumineuse et dispositif d'éclairage - Google Patents

Module de source lumineuse et dispositif d'éclairage Download PDF

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Publication number
WO2013073816A1
WO2013073816A1 PCT/KR2012/009566 KR2012009566W WO2013073816A1 WO 2013073816 A1 WO2013073816 A1 WO 2013073816A1 KR 2012009566 W KR2012009566 W KR 2012009566W WO 2013073816 A1 WO2013073816 A1 WO 2013073816A1
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WIPO (PCT)
Prior art keywords
light
source module
light source
fluorescent material
disposed
Prior art date
Application number
PCT/KR2012/009566
Other languages
English (en)
Inventor
Ji Hyun Kim
Dong Nyung Lim
Tae Young Choi
Hwa Young Kim
Young Kuk Kwak
Ji Hyouk Chung
Keun Tak JOO
Original Assignee
Lg Innotek Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from KR1020110118135A external-priority patent/KR101209452B1/ko
Priority claimed from KR1020110141053A external-priority patent/KR101315703B1/ko
Application filed by Lg Innotek Co., Ltd. filed Critical Lg Innotek Co., Ltd.
Publication of WO2013073816A1 publication Critical patent/WO2013073816A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements

Definitions

  • This embodiment relates to a light source module and a lighting device.
  • a light emitting diode is a semiconductor element for converting electric energy into light.
  • the LED As compared with existing light sources such as a fluorescent lamp and an incandescent electric lamp and so on, the LED has advantages of low power consumption, a semi-permanent span of life, a rapid response speed, safety and an environment-friendliness. For this reason, many researches are devoted to substitution of the existing light sources with the LED.
  • the LED is now increasingly used as a light source for lighting devices, for example, various lamps used interiorly and exteriorly, a liquid crystal display device, an electric sign and a street lamp and the like.
  • the objective of the present invention is to provide a light source module and a lighting device which emit light beneficial to human health.
  • the objective of the present invention is to provide a light source module and a lighting device which emit light helpful to the improvement of educational ability of human.
  • the objective of the present invention is to provide a light source module and a lighting device which emit white light having a predetermined color temperature.
  • the objective of the present invention is to provide a light source module and a lighting device which emit white light having a high color rendering index.
  • the objective of the present invention is to provide a light source module and a lighting device in which blue light having a blue wavelength within a predetermined range emits white light having intensity greater than a predetermined intensity.
  • the objective of the present invention is to provide a light source module and a lighting device which are applicable to a common lighting apparatus.
  • the objective of the present invention is to provide a light source module and a lighting device which are capable of improving heat radiation efficiency.
  • the objective of the present invention is to provide a light source module and a lighting device which are capable of rapidly removing heat radiated from a driving unit.
  • the objective of the present invention is to provide a light source module and a lighting device which are capable of reducing weight and material cost thereof.
  • the light source module includes: a substrate; at least one first light emitting device which is disposed on the substrate and emits first blue light having a long wavelength; at least one second light emitting device which is disposed on the substrate and emits second blue light having a wavelength shorter than the wavelength of the first blue light; and an excitation layer which is disposed on the first light emitting device and the second light emitting device and emits light excited by the first blue light and the second blue light.
  • the light source module emits white light mixed with the first and the second blue lights and the excited light.
  • the white light has a value which is obtained by dividing a therapy power by lumen and is larger than 0.3.
  • the first blue light has a dominant wavelength in a wavelength band of 460 nm to 480 nm.
  • the second blue light has a dominant wavelength in a wavelength band of 442 nm to 452 nm.
  • the excitation layer includes silicon and a fluorescent material.
  • a ratio of the silicon to the fluorescent material is 8:2 to 9:1.
  • the excitation layer includes a yellow fluorescent material, a green fluorescent material and a red fluorescent material.
  • a ratio of the yellow fluorescent material, the green fluorescent material and the red fluorescent material is 7:2:1.
  • the white light has a color rendering index (CRI) greater than 80 (Ra) and less than 100 (Ra).
  • CRI color rendering index
  • the light source module includes: a first light source module including a first substrate, a first light emitting device which is disposed on the first substrate and emits first blue light having a long wavelength, and a first excitation layer which is disposed on the first light emitting device and emits first light excited by the first blue light; and a second light source module including a second substrate, a second light emitting device which is disposed on the second substrate and emits second blue light having a wavelength shorter than the wavelength of the first blue light, and a second excitation layer which is disposed on the second light emitting device and emits second light excited by the second blue light.
  • the first light source module emits first white light mixed with the first blue light and the first excited light.
  • the second light source module emits second white light mixed with the second blue light and the second excited light. Light mixed with the first white light and the second white light has a value which is obtained by dividing a therapy power by lumen and is larger than 0.3.
  • the first blue light has a dominant wavelength in a wavelength band of 460 nm to 480 nm.
  • the second blue light has a dominant wavelength in a wavelength band of 442 nm to 452 nm.
  • the first excitation layer includes silicon and a fluorescent material.
  • a color temperature of the first white light is from 5,700 K to 6,500 K
  • a proportion that the fluorescent material occupies in the first excitation layer is 13.5 % to 15 %.
  • the second excitation layer includes silicon and a fluorescent material.
  • a color temperature of the second white light is from 2,700 K
  • a proportion that the fluorescent material occupies in the second excitation layer is 26 % to 27 %.
  • the first excitation layer includes a yellow fluorescent material, a green fluorescent material and a red fluorescent material.
  • a color temperature of the first white light is from 5,700 K to 6,500 K
  • a ratio of the yellow fluorescent material, the green fluorescent material and the red fluorescent material is 6:3:1 to 6.5:2.5:1.
  • the second excitation layer includes a yellow fluorescent material, a green fluorescent material and a red fluorescent material.
  • a color temperature of the second white light is 2,700 K
  • a ratio of the yellow fluorescent material, the green fluorescent material and the red fluorescent material is 5.5:2:2.5.
  • the light mixed with the first white light and the second white light has a color rendering index (CRI) greater than 80 (Ra) and less than 100 (Ra).
  • CRI color rendering index
  • the lighting device includes: a light source module; a first body which is disposed under the light source module; a case which is disposed under the first body; a driving unit which is disposed in the case and electrically connected to the light source module; and a second body which is coupled to the first body and surrounds the case.
  • the second body includes at least one hole.
  • the light source module emits white light.
  • the white light has a value which is obtained by dividing a therapy power by lumen and is larger than 0.3.
  • the light source module includes: a substrate; at least one first light emitting device which is disposed on the substrate and emits first blue light having a long wavelength; at least one second light emitting device which is disposed on the substrate and emits second blue light having a wavelength shorter than the wavelength of the first blue light; and an excitation layer which is disposed on the first light emitting device and the second light emitting device and emits light excited by the first blue light and the second blue light.
  • the light source module includes: a first light source module including a first substrate, a first light emitting device which is disposed on the first substrate and emits first blue light having a long wavelength, and a first excitation layer which is disposed on the first light emitting device and emits first light excited by the first blue light; and a second light source module including a second substrate, a second light emitting device which is disposed on the second substrate and emits second blue light having a wavelength shorter than the wavelength of the first blue light, and a second excitation layer which is disposed on the second light emitting device and emits second light excited by the second blue light.
  • the second body includes an upper portion including an upper opening and a lower portion including a lower opening.
  • the first body is disposed in the upper opening.
  • the case is disposed in the lower opening.
  • the lower portion of the second body includes the hole.
  • the first body includes one side and a lateral portion.
  • the one side has a seating recess in which the light source module is disposed.
  • the lateral portion extends downward from the one side.
  • the second body has a level difference portion on which the lateral portion of the first body is disposed.
  • the lighting device further includes a holder which is disposed on the case and covers the driving unit.
  • the hole is formed extending in one direction. An interval between the holes of one side is less than an interval between the holes of the other side.
  • a light source module and a lighting device in accordance with this embodiment are beneficial to human health.
  • the light source module and the lighting device in accordance with this embodiment are capable of activating body rhythms and treating human mental illness like melancholia or insomnia.
  • a light source module and a lighting device in accordance with this embodiment are helpful to the improvement of educational ability of human.
  • the light source module and the lighting device in accordance with this embodiment are capable of improving learning efficiency of human.
  • a light source module and a lighting device in accordance with this embodiment are capable of emitting white light having a predetermined color temperature.
  • a light source module and a lighting device in accordance with this embodiment are capable of emitting white light having a high color rendering index.
  • blue light having a blue wavelength within a predetermined range emits white light having intensity greater than a predetermined intensity.
  • a light source module and a lighting device in accordance with this embodiment are applicable to a common lighting apparatus.
  • a light source module and a lighting device in accordance with this embodiment are capable of improving heat radiation efficiency.
  • a light source module and a lighting device in accordance with this embodiment are capable of rapidly removing heat radiated from a driving unit.
  • a light source module and a lighting device in accordance with this embodiment are capable of reducing weight and material cost thereof.
  • Fig. 1 is a perspective view of a light source module according to a first embodiment
  • Fig. 2 is a cross sectional view of the light source module shown in Fig. 1 taken along line A-A’;
  • Fig. 3 is a cross sectional view showing a modified example of the light source module shown in Fig. 2;
  • Fig. 4 is a perspective view of a light source module according to a second embodiment
  • Fig. 5 is a cross sectional view of the light source module shown in Fig. 4 taken along line B-B’;
  • Fig. 6 is a graph showing intensities (mW) based on wavelengths of an experiment 1 of Table 1 and experiments 4, 5, and 6 of Table 2;
  • Fig. 7 is a perspective view of a lighting device according to the embodiment.
  • Fig. 8 is a bottom perspective view of the lighting device shown in Fig. 7;
  • Fig. 9 is an exploded perspective view of the lighting device shown in Fig. 7;
  • Fig. 10 is a bottom exploded perspective view of the lighting device shown in Fig. 9;
  • Fig. 11 is a sectional perspective view of the lighting device shown in Fig. 7;
  • Fig. 12 is a sectional bottom perspective view of the lighting device shown in Fig. 11.
  • each layer is magnified, omitted or schematically shown for the purpose of convenience and clearness of description.
  • the size of each component does not necessarily mean its actual size.
  • an element when it is mentioned that an element is formed “on” or “under” another element, it means that the mention includes a case where two elements are formed directly contacting with each other or are formed such that at least one separate element is interposed between the two elements.
  • the “on” and “under” will be described to include the upward and downward directions based on one element.
  • Fig. 1 is a perspective view of a light source module according to a first embodiment.
  • Fig. 2 is a cross sectional view of the light source module shown in Fig. 1 taken along line A-A’.
  • a light source module 100 emits white light.
  • the white light has a predetermined value obtained by dividing a therapy power by lumen.
  • mW means a total intensity of a wavelength band of 460 nm to 480 nm in white light emitted from the light source module 100.
  • the total intensity corresponds to the sum of all the intensities per 1 nm within a range between 460 nm and 480 nm.
  • a value obtained by dividing a therapy power by lumen of the white light emitted from the light source module 100 according to the first embodiment is substantially larger than 0.3.
  • the white light having the value larger than 0.3 may be physically and mentally beneficial to human.
  • the white light emitted from the light source module 100 according to the first embodiment may have a predetermined color temperature.
  • the predetermined color temperature may be 5,700 K.
  • 5,700 K is representative of 5665K ⁇ 355K.
  • the color temperature of 5,700 K is similar to that of sunlight at noon and may be physically and mentally beneficial to human.
  • the white light emitted from the light source module 100 according to the first embodiment has a color rendering index (CRI) greater than 80 (Ra). Therefore, the light source module 100 according to the first embodiment can be used as general lighting and particularly may be used as spatial lighting in an office, school, hospital or the like.
  • CRI color rendering index
  • the light source module 100 may include a substrate 110, a first light emitting device 131, a second light emitting device 133 and an excitation layer 150.
  • the substrate 110 may have a general quadrangular plate shape.
  • the substrate 100 may also have various shapes, for example, a polygonal plate shape, a circular plate shape or the like.
  • the substrate 110 may be disposed on a member like a heat sink (not shown) capable of receiving and radiating heat radiated from the light source module 100.
  • the heat sink (not shown) may be formed of a metallic material or a resin material which has excellent radiation efficiency.
  • the material of the heat sink may include at least one of Al, Ni, Cu, Ag and Sn.
  • the substrate 110 may be one of a printed circuit board (PCB), a metal PCB (MPCB), a metal core PCB (MCPCB), a flexible PCB (FPCB) and a ceramic board.
  • the substrate 110 may be formed of a material which efficiently reflecting light.
  • the surface of the substrate 110 may be formed of or coated with a color capable of efficiently reflecting light, for example, white, silver and the like.
  • the first and the second light emitting devices 131 and 133 are disposed on one side of the substrate 110.
  • the first light emitting device 131 is disposed on one side of the substrate 110 and is spaced apart from the second light emitting device 133 at a certain interval.
  • the first light emitting device 131 emits blue light having a dominant wavelength in a predetermined wavelength band.
  • the wavelength band of the blue light emitted from the first light emitting device 131 may be 460 nm to 480 nm.
  • the first light emitting device 131 emits blue light having a wavelength longer than that of the second light emitting device 133.
  • the second light emitting device 133 is disposed on one side of the substrate 110 and is spaced apart from the first light emitting device 131at a certain interval.
  • the second light emitting device 133 emits blue light having a dominant wavelength in a wavelength band different from that of the blue light emitted from the first light emitting device 131.
  • the wavelength of the blue light emitted from the second light emitting device 133 may be 445 nm to 452 nm.
  • the second light emitting device 133 emits blue light having a wavelength shorter than that of the first light emitting device 131.
  • One first light emitting device 131 and one second light emitting device 133 may be provided, or a plurality of the first light emitting devices 131 and a plurality of the second light emitting devices 133 may be provided so as to obtain a desired illuminance. Therefore, the number of the first light emitting devices 131 may be the same as or different from that of the second light emitting devices 133. When different, the number of the first light emitting devices 131 may be larger or smaller than that of the second light emitting devices 133.
  • the first and the second light emitting devices 131 and 133 may be an LED chip.
  • the LED chip may have a lateral type or vertical type.
  • the LED chip may have a flip type.
  • the excitation layer 150 is disposed on one side of the substrate 110 and disposed on the first and the second light emitting devices 131 and 133.
  • the excitation layer 150 may be disposed to cover the first and the second light emitting devices 131 and 133 at the same time.
  • the excitation layer 150 includes silicon and a fluorescent material.
  • a ratio of the silicon to the fluorescent material may be 8:2 to 9:1. If the ratio of the silicon to the fluorescent material is less than 8, the fluorescent material exists too much, and then the amount of light emitted from the excitation layer 150 may be reduced. If the ratio of the silicon to the fluorescent material is larger than 9, the amount of the fluorescent material is too small, effect caused by the fluorescent material cannot be sufficiently obtained. For example, in the entire excitation layer 150, the fluorescent material may occupy 11.5 % and the silicon may occupy the rest of 88.5 %.
  • the fluorescent material may include at least one of a yellow fluorescent material, a green fluorescent material and a red fluorescent material.
  • the yellow fluorescent material emits yellow light having a dominant wavelength in a wavelength band from 540 nm to 585 nm in response to blue light (430 nm to 480 nm).
  • the green fluorescent material emits green light having a dominant wavelength in a wavelength band from 510 nm to 535 nm in response to the blue light (430 nm to 480 nm).
  • the red fluorescent material emits red light having a dominant wavelength in a wavelength band from 600 nm to 650 nm in response to the blue light (430 nm to 480 nm).
  • the yellow fluorescent material may be a silicate fluorescent material, a YAG of a garnet fluorescent material and an oxynitride fluorescent material.
  • the yellow fluorescent material may be selected from Y 3 Al 5 O 12 :Ce 3+ (Ce:YAG), CaAlSiN 3 :Ce 3+ and Eu 2+ -SiAlON fluorescent material and/or may be selected from BOSE fluorescent material.
  • the yellow fluorescent material may be doped at an arbitrary appropriate level so as to provide light output of a desired wavelength. Ce and/or Eu may be doped in the fluorescent material at a dopant concentration of about 0.1 % to about 20 %.
  • a fluorescent material appropriate for this purpose may include products produced by Mitsubishi Chemical Company (Tokyo, Japan), Leuchtstoffwerk Breitungen GmbH (BreitInstitut, Germany) and Intermatix Company (Fremont, California).
  • the green fluorescent material may be a silicate fluorescent material, a nitride fluorescent material and an oxynitride fluorescent material.
  • the red fluorescent material may be a nitride fluorescent material and a sulfide fluorescent material.
  • the red fluorescent material may include CaAlSiN 3 :Eu 2+ and Sr 2 Si 5 N 8 :Eu 2+ . These fluorescent materials are able to cause a quantum efficiency to be maintained greater than 80 % at a temperature higher than 150 °C.
  • Another usable red fluorescent material may be selected from not only CaSiN 2 :Ce 3+ and CaSiN 2 :Eu 2+ but Eu 2+ -SiAlON fluorescent material and/or may be selected from (Ca,Si,Ba)SiO 4 :Eu 2+ (BOSE) fluorescent material.
  • a CaAlSiN:Eu 2+ fluorescent material of the Mitsubishi Chemical Company may have a dominant wavelength of about 624 nm, a peak wavelength of about 628 nm and FWHM of about 100 nm.
  • the green fluorescent material may be more than the red fluorescent material
  • the yellow fluorescent material may be more than the green fluorescent material.
  • the ratio of the yellow fluorescent material, the green fluorescent material and the red fluorescent material may be 7:2:1.
  • the color temperature of mixed light emitted from the excitation layer 150 may be approximately 5,700 K.
  • the color temperature of 5,700 K is similar to that of sunlight at noon and may be physically and mentally beneficial to human.
  • Fig. 3 is a cross sectional view showing a modified example of the light source module shown in Fig. 2.
  • a substrate 110’ shown in Fig. 3 is different from the substrate 110 shown in Fig. 2.
  • the substrate 110’ shown in Fig. 3 has a recess in which the first and the second light emitting devices 131 and 133 and the excitation layer 150 may be disposed.
  • the recess includes a groove or a cavity.
  • first and the second light emitting devices 131 and 133 and the excitation layer 150 which are shown in Fig. 3 are the same as the first and the second light emitting devices 131 and 133 and the excitation layer 150 which are shown in Fig. 2, detailed descriptions thereof will be omitted.
  • the following table 1 shows experimental data of a target module formed by using the light source module shown in Fig. 1 or Fig. 3.
  • a target module a plurality of the light source modules shown in Fig. 1 or Fig. 3 are used and are connected in series/parallel.
  • the number of the used light source modules is 45.
  • the target module has a consumption power of 6 to 7 watts (W), a luminous flux of larger than 600 lm, a color temperature of 5,700 K, a total intensity greater than 240 mW in a wavelength band of 460 nm to 480 nm, a CRI greater than 80 (Ra) and an efficiency higher than 100 (lm/W).
  • W watts
  • the total intensity in a wavelength band of 460 nm to 480 nm corresponds to the sum of all the intensities per 1 nm within a range between 460 nm and 480 nm. That is, the total intensity corresponds to the sum of an intensity at a wavelength of 460 nm, an intensity at a wavelength of 461 nm, ... , an intensity at a wavelength of 480 nm.
  • the experimental result shows that the experiment 1 is suitable for the target module and the experiment 2 is not suitable for the target module because the power consumption of the experiment 2 is 9.66 W higher than the power consumption (6 ⁇ 7 W) of the target module. It can be seen that a value obtained by dividing a therapy power by lumen of the target module of the experiment 1 was approximately 0.337mW/lm.
  • Fig. 4 is a perspective view of a light source module according to a second embodiment.
  • Fig. 5 is a cross sectional view of the light source module shown in Fig. 4 taken along line B-B’.
  • a light source module 100’ includes a first light source module 100a’ and a second light source module 100b’.
  • the light source module 100’ is comprised of the first light source module 100a’ and the second light source module 100b’, it is possible to differently control the current in accordance with the light source modules.
  • the first light source module 100a’ emits white light having a first color temperature.
  • the first color temperature may be 5,700 K or 6,500 K.
  • 5,700 K represents 5,665 K ⁇ 355K.
  • 6,500 K represents 6,530 K ⁇ 510K.
  • the second light source module 100b’ emits white light having a second color temperature different from the first color temperature.
  • the second color temperature may be 2,700 K.
  • 2,700 K represents 2,725 K ⁇ 145K.
  • the light source module 100’ emits white light mixed with the white light emitted from the first light source module 100a’ and the white light emitted from the second light source module 100b’.
  • the white light emitted from the light source module 100’ has a predetermined value obtained by dividing a therapy power by lumen.
  • the value may be substantially larger than 0.3.
  • the white light having the value larger than 0.3 may be physically and mentally beneficial to human.
  • the white light emitted from the light source module 100’ according to the second embodiment has a CRI greater than 80 (Ra). Therefore, the light source module 100’ according to the second embodiment can be used as general lighting and particularly may be used as spatial lighting in an office, school, hospital or the like.
  • the first light source module 100a’ includes a first substrate 110a’, a first light emitting device 130a’ and a first excitation layer 150a’.
  • the first substrate 110a’ may be the substrate 110’ shown in Fig. 3. However, the first substrate 110a’ is not limited to this and may be the substrate 100 shown in Fig. 2.
  • the first light emitting device 130a’ is disposed on one side of the first substrate 110a’. One or two first light emitting devices 130a’ may be provided.
  • the first light emitting device 130a’ may be the same as the first light emitting device 131 shown in Fig. 1. Specifically, the first light emitting device 130a’ emits blue light having a dominant wavelength in a wavelength band of 460 nm to 480 nm. The first light emitting device 130a’ emits blue light having a wavelength longer than that of a second light emitting device 130b’.
  • the first excitation layer 150a’ is disposed on the first substrate 110a’ to cover the first light emitting device 130a’.
  • the first excitation layer 150a’ includes silicon and a fluorescent material.
  • a proportion that the fluorescent material occupies in the first excitation layer 150a’ may be changed according to the first color temperature of the light emitted from the first light source module 100a’. Specifically, when the first color temperature is 5,700 K, the proportion that the fluorescent material occupies in the first excitation layer 150a’ may be 15 %, and when the first color temperature is 6,500 K, the proportion that the fluorescent material occupies in the first excitation layer 150a’ may be 13.5 %. When the portion that the fluorescent material occupies is from 13.5 % to 15 %, the light may have a color temperature from 5,700 K to 6,300 K.
  • the color temperature from 5,700 K to 6,300 K is similar to that of sunlight at noon and may be physically and mentally beneficial to human as compared with a color temperature which is lower than 5, 700 K and higher than 6,300 K.
  • the first excitation layer 150a’ includes a yellow fluorescent material, a green fluorescent material and a red fluorescent material.
  • the green fluorescent material may be more than the red fluorescent material
  • the yellow fluorescent material may be more than the green fluorescent material.
  • a ratio of the yellow fluorescent material, the green fluorescent material and the red fluorescent material may be changed according to the first color temperature of the light emitted from the first light source module 100a’. Specifically, when the first color temperature is 5,700 K, the ratio of the yellow fluorescent material, the green fluorescent material and the red fluorescent material may be 6.5:2.5:1, and when the first color temperature is 6,500 K, the ratio of the yellow fluorescent material, the green fluorescent material and the red fluorescent material may be 6:3:1.
  • the light may have a color temperature from 5,700 K to 6,300 K.
  • the color temperature from 5,700 K to 6,300 K is similar to that of sunlight at noon and may be physically and mentally beneficial to human as compared with a color temperature which is lower than 5, 700 K and higher than 6,300 K.
  • the second light source module 100b’ includes a second substrate 110b’, a second light emitting device 130b’ and a second excitation layer 150b’.
  • the second substrate 110b’ may be the substrate 110’ shown in Fig. 3 or may be the substrate 100 shown in Fig. 2.
  • the second light emitting device 130b’ is disposed on one side of the second substrate 110b’.
  • One or two second light emitting devices 130b’ may be provided.
  • the second light emitting device 130b’ may be the same as the second light emitting device 133 shown in Fig. 1. That is, the second light emitting device 130b’ emits blue light having a dominant wavelength in a wavelength band of 445 nm to 452 nm. The second light emitting device 130b’ emits blue light having a wavelength shorter than that of the first light emitting device 130a’.
  • the second excitation layer 150b’ is disposed on the second substrate 110b’ to cover the second light emitting device 130b’.
  • the second excitation layer 150b’ includes silicon and a fluorescent material.
  • a proportion that the fluorescent material occupies in the second excitation layer 150b’ may be from 26 % to 27 %.
  • a color temperature of about 2,700 K can be created.
  • the light which is emitted from the second excitation layer 150b’ and has the temperature of about 2,700 K is mixed with the light emitted from the first light source module 100a’.
  • the light source module 100’ according to the second embodiment may emit light having a CRI greater than that of the light emitted from the first light source module 100a’.
  • Detailed experimental examples thereabout can be seen through the experiment 1 and the experiment 3 of the following table 2.
  • the second excitation layer 150b’ includes a yellow fluorescent material, a green fluorescent material and a red fluorescent material.
  • the green fluorescent material may be more than the red fluorescent material
  • the yellow fluorescent material may be more than the green fluorescent material.
  • a ratio of the yellow fluorescent material, the green fluorescent material and the red fluorescent material may be 5.5:2:2.5.
  • a color temperature of about 2,700 K can be created.
  • the light which is emitted from the second excitation layer 150b’ and has the temperature of about 2,700 K is mixed with the light emitted from the first light source module 100a’. Accordingly, the light source module 100’ according to the second embodiment may emit light having a CRI greater than that of the light emitted from the first light source module 100a’.
  • One or a plurality of the first light source modules 100a’ and one or a plurality of the second light source modules 100b’ may be provided so as to obtain a desired illuminance.
  • Table 2 shows experimental data of a target module formed by using the light source modules shown in Figs. 4 to 5.
  • a plurality of the light source modules shown in Figs. 4 to 5 are used and are connected in series/parallel. Specifically, the number of the used light source modules is 50.
  • the target module has a consumption power of 6 to 7 watts (W), a luminous flux of larger than 600 lm, a color temperature of from 2,700 K to 5,700 K, a total intensity greater than 482.50 mW in a wavelength band of 460 nm to 480 nm and a CRI greater than 80 (Ra).
  • the color temperature of the first light emitting device 130a’ shown in Fig. 5 is 6,500 K.
  • the color temperature of the second light emitting device 130b’ is 2,700 K.
  • current of 240 mA is applied to the one first light source module 100a’ and current of 240 mA is applied to the one second light source module 100b’.
  • current is not applied to the first light source module 100a’and current of 240 mA is applied to the one second light source module 100b’.
  • current is not applied to the second light source module 100b’ and current of 240 mA is applied to the one first light source module 100a’.
  • current of 200 mA is applied to the one first light source module 100a’ and current of 40 mA is applied to the one second light source module 100b’.
  • the current can be controlled by means of pulse width modulation (PWM).
  • PWM pulse width modulation
  • the currents applied to the first and the second light source modules 100a’ and 100b’ can be controlled by adjusting a duty ratio of a current pulse signal.
  • the color temperature and total intensity of the experiment 4 is suitable for the target module. It can be found that a value obtained by dividing a therapy power by lumen of the experiment 4 is approximately 0.77. It can be found that the experiment 5 is suitable for the target module having a color temperature of 4,000 K. It can be found that a value obtained by dividing a therapy power by lumen of the experiment 5 is approximately 0.53.
  • Table 3 experiment 1 of Table 1 experiment 4 of Table 2 sum (mW) of intensities of blue light in a wavelength band of 460 nm to 480 nm(the number of the light source modules) 268(45 ea) 482(50 ea) luminous flux (lm) 793 621 a value obtained by dividing a therapy power by lumen (mW/lm) 0.337 0.776
  • Fig. 6 is a graph showing intensities (mW) based on wavelengths of an experiment 1 of Table 1 and experiments 4, 5, and 6 of Table 2.
  • the light source modules 100 and 100’ according to the first and the second embodiments shown in Figs. 1 to 5 emit white light.
  • the emitted white light has a predetermined color temperature and a value which is obtained by dividing a therapy power per lumen and is greater than a predetermined value.
  • the emitted white light has a high CRI. Therefore, the light source modules 100 and 100’ according to the first and the second embodiments may be used in spatial lighting, for example, outdoor lighting, indoor lighting, flat panel lighting and the like. Further, the emitted white light is beneficial to human, for instance, body rhythm activation, learning efficiency improvement, sleep disorder improvement, and the like.
  • Fig. 7 is a perspective view of a lighting device according to the embodiment.
  • Fig. 8 is a bottom perspective view of the lighting device shown in Fig. 7.
  • Fig. 9 is an exploded perspective view of the lighting device shown in Fig. 7.
  • Fig. 10 is a bottom exploded perspective view of the lighting device shown in Fig. 9.
  • Fig. 11 is a sectional perspective view of the lighting device shown in Fig. 7.
  • Fig. 12 is a sectional bottom perspective view of the lighting device shown in Fig. 11.
  • the lighting device may includes the light source module 100, a cover 200, a member 300, bodies 400 and 500, a case 600, a holder 700, a driving unit 800 and a socket 900.
  • the light source module 100 may be implemented with the light source module 100 according to the first embodiment shown in Figs. 1 to 2. Specifically, the light source module 100 shown in Figs. 9 to 10 may be formed by disposing a plurality of the excitation layers 150 on the substrate 110 shown in Fig. 2 and by disposing at least two light emitting devices 131 and 133 within the excitation layers 150 respectively.
  • the light source module 100 may be formed by modifying the light source module according to the first embodiment shown in Fig. 3.
  • the light source module 100 may be the light source module 100’ according to the second embodiment shown in Figs. 4 to 5. Specifically, the light source module 100 shown in Figs. 9 to 10 may be implemented with the plural light source modules 100a’ and 100b’ shown in Fig. 4.
  • the light source module 100 may be a common light source module instead of the light source modules 100 and 100’ shown in Figs. 1 to 5.
  • the light source module 100 may be implemented with the substrate 110 and the light emitting device disposed on the substrate 110.
  • the light source module 100 may further include the excitation layer which covers the light emitting device and includes a fluorescent material.
  • the excitation layer may function as a lens which adjusts an orientation angle or direction of light emitted from the light emitting device.
  • the substrate 110 of the light source module 100 may includes a coupling hole 115.
  • a coupling means like a screw is inserted into the coupling hole 115 and a coupling hole 415 of the first body 400.
  • the substrate 110 can be securely coupled to the first body 400 by means of the coupling means.
  • the surface of the substrate 110 may be coated with a material capable of efficiently reflecting light or with a material having a color, for example, white and silver.
  • the cover 200 is disposed on the light source module 100 and is coupled to the member 300.
  • the cover 200 is capable of protecting the light source module 100 from external impurities and moisture.
  • the cover 200 may have a hemispherical shape with an empty interior or a bulb shape with an empty interior.
  • the cover 200 has an outer surface and an inner surface.
  • the inner surface may be coated with an opalescent pigment.
  • the pigment may include a diffusion material which diffuses the light emitted from the light source module 100.
  • the cover 200 may be made of glass. However, the glass is vulnerable to weight or external impact. Therefore, it is recommended that plastic, polypropylene (PP), polyethylene (PE) and the like should be used.
  • the cover 200 may be made of polycarbonate (PC) having excellent light resistance, thermal resistance and impact strength property.
  • the inner surface roughness of the cover 200 may be larger than the outer surface roughness of the cover 200.
  • the inner surface roughness of the cover 200 is larger than the outer surface roughness of the cover 200, there is an advantage in that the light emitted from the light source module 100 can be sufficiently scattered and diffused.
  • the cover 200 may be manufactured by a blow molding process capable of increasing the orientation angle of the light emitted from the light source module 100.
  • the cover 200 is coupled to the member 300.
  • the cover 200 and the member 300 can be coupled to each other by inserting and fixing the end portion of the cover 200 into a recess 350 of the member 300.
  • the member 300 is disposed on the first body 400.
  • the member 300 may have a disk shape.
  • the shape of the member 300 is not limited to this.
  • the member 300 may have a shape corresponding to the shape of the body 400.
  • the member 300 may have a polygonal plate shape or an elliptical plate shape.
  • the member 300 may have one side 310 on which the light source module 100 is disposed.
  • An opening 330 in which the substrate 110 of the light source module 110 is disposed may be formed in the one side 310.
  • the recess 350 into which the end portion of the cover 200 is inserted may be also formed in the one side 310.
  • a through-hole 313 through which a wire, etc., of the driving unit 800 passes may be formed in the one side 310.
  • the recess 350 may be disposed in the outer circumference of the one side 310.
  • the recess 350 may have a shape corresponding to the shape of the end portion of the cover 200.
  • the one side 310 of the member 300 may be formed of a material capable of efficiently reflecting the light emitted from the light source module 100. Otherwise, the surface of the one side 310 may be coated with a color capable of efficiently reflecting light, for example, white, silver and the like.
  • the member 300 may be disposed on the second body 500. Specifically, the member 300 may be disposed to block an upper opening of the second body 500. In this case, the upper portion of the second body 500 may be coupled to or surround the outer circumference of the member 300.
  • the member 300 may be formed of a material having thermal conductivity.
  • the member 300 may be formed of a metallic material like Al.
  • the member 300 may receive the heat from the light source module 100 and radiate the heat to the outside, or may transfer the heat to the first body 400.
  • the bodies 400 and 500 radiate effectively the heat generated from the light source module 100 and the driving unit 800.
  • the body may include the first body 400 and the second body 500.
  • the first body 400 and the second body 500 will be described in detail.
  • the light source module 100 and the member 300 are disposed on the first body 400.
  • the first body 400 has one side 410.
  • the substrate 110 of the light source module 100 is disposed in the central portion of the one side 410.
  • the member 300 is disposed in the remaining portion other than the central portion of the one side 410.
  • the one side 410 may have the coupling hole 415.
  • a coupling means inserted into the coupling hole 115 of the substrate 110 of the light source module 100 is inserted into the coupling hole 415.
  • the one side 410 may have a seating recess 430.
  • the substrate 110 of the light source module 100 may be disposed in the seating recess 430.
  • a through-hole 413 through which a wire, etc., of the driving unit 800 passes may be formed in the one side 410.
  • the first body 400 may have a lateral portion 450.
  • the lateral portion 450 may extend downward from the outer edge of the one side 410.
  • the lateral portion 450 may be coupled to the upper portion 510 of the second body 500.
  • the lateral portion 450 may be disposed on the level difference portion 520 of the second body 500. Since the lateral portion 450 is disposed on the level difference portion 520, the first body 400 and the second body 500 can be coupled to each other without a separate coupling means.
  • the first body 400 is able to receive the heat generated from the light source module 100 and radiate the heat.
  • the first body 400 may be made of a material having thermal conductivity, for example, a metallic material including aluminum and the like.
  • the first body 400 may have a disk shape. However, the shape of the first body 400 is not limited to this.
  • the first body 400 may have a polygonal plate shape or an elliptical plate shape.
  • the first body 400 may also have a shape corresponding to the shape of the upper portion 510 of the second body 500 such that the first body 400 is disposed in the second body 500.
  • the first body 400 may be disposed on the holder 700.
  • the first body 400 may be coupled to the holder 700 by means of a coupling means.
  • the first body 400 may be received in the second body 500.
  • the first body 400, together with the member 300, may be disposed in the upper opening of the second body 500. That is, the first body 400 is surrounded by the upper portion of the second body 500.
  • the first body 400 contacts with the second body 500 and then is able to transfer the heat from the light source module 100 to the second body 500.
  • the second body 500 is disposed under the cover 200.
  • the second body 500, together with the cover 200, may form the appearance of the lighting device according to the embodiment.
  • the light source module 100, the member 300, the first body 400, the case 600, the holder 700 and the driving unit 800 may be disposed in the second body 500.
  • the second body 500 may have a cylindrical shape with an empty interior. Specifically, the second body 500 may have shape of which the diameter decreases with the approach to a lower portion 530 from the upper portion 510 thereof.
  • the second body 500 may have a predetermined receiver 560 thereinside as shown in Figs. 11 to 12.
  • the light source module 100, the member 300, the first body 400, the case 600, the holder 700 and the driving unit 800 may be disposed in the receiver 560.
  • the second body 500 may include the upper portion 510 and the lower portion 530.
  • the upper portion 510 has an upper opening 550.
  • the lower portion 530 may have a lower opening 570.
  • the diameter of the upper opening 550 may be larger than that of the lower opening 570.
  • the upper portion 510 may surround the member 300 and the first body 400.
  • the member 300 and the first body 400 may be disposed in the upper opening 550. Therefore, the upper opening 550 may be blocked by the member 300 and the first body 400.
  • the upper portion 510 contacts with the first body 400 and then is able to receive predetermined heat from the first body 400.
  • the lower portion 530 may extend from the upper portion 510.
  • the inside of the lower portion 530 is able to receive at least one portion of the case 600 receiving the driving unit 800.
  • the upper portion 510 and the lower portion 530 may be integrally formed with each or may be separated from or coupled to each other.
  • the level difference portion 520 may be disposed between the upper portion 510 and the lower portion 530.
  • the lateral portion 450 of the first body 400 may be disposed on the level difference portion 520.
  • the level difference portion 520 may function as a catching projection supporting the lateral portion 450 of the first body 400. Due to the level difference portion 520, the first body 400 may be coupled to the second body 500 without using a separate coupling means.
  • the lower portion 530 may be formed separately from an upper portion 610 of the case 600 by a predetermined interval. Therefore, a predetermined space may be formed between the upper portion 610 of the case 600 and the lower portion 530.
  • the spaced interval from the lower portion 530 to the upper portion 610 of the case 600 becomes smaller toward the lower portion 530 from the upper portion 510 of the second body 500. Contrarily, the spaced interval becomes greater toward the upper portion 510 from the lower portion 530 of the second body 500.
  • the driving unit 800 may be disposed within the case 600. Like the light source module 100, the driving unit 800 radiates not a little heat. The radiated heat may cause damage of the driving unit 800. To overcome this problem, the lower portion 530 of the second body 500 may have a plurality of holes 590.
  • the driving unit 800 Since the heat radiated from the case 600 through the plurality of the holes 590 flows to the outside, the driving unit 800 is able to avoid the damage caused by the heat radiated from the driving unit 800 itself.
  • a flow path allowing heated air to move may be formed between the case 600 and the lower portion 530 of the second body 500.
  • the hole 590 may have various shapes, for example, a quadrangular shape, an elliptical shape, a circular shape and the like.
  • the hole 590 may be formed extending in one direction. That is, the hole 590 may be formed extending in a direction from the upper side of the lower portion 530 of the second body 500 to the lower side of the lower portion 530 of the second body 500.
  • an interval between the holes 590 formed in the lower side of the lower portion 530 may be less than an interval between the holes 590 formed in the upper side of the lower portion 530.
  • the upper portion 610 of the case 600 may be disposed in the lower opening 570 of the lower portion 530.
  • the lower opening 570 of the lower portion 530 may be blocked by the case 600.
  • the second body 500 may be made of a material having thermal conductivity, for example, a metallic material including aluminum and the like.
  • the case 600 may include the upper portion 610 and a lower portion 630.
  • the upper portion 610 may receive the driving unit 800 thereinside and may be received in the second body 500.
  • the upper portion 610 is spaced apart from the lower portion 530 of the second body 500 at a predetermined interval and may form a predetermined space.
  • the upper portion 610 may have a cylindrical shape with an empty interior.
  • the upper portion 610 is able to protect the driving unit 800 by sealing the driving unit 800. Due to the upper portion 610, a withstand voltage of the lighting device according to the embodiment can be enhanced.
  • the upper portion 610 may include a molding part (not shown) therewithin.
  • the molding part (not shown) fixes the driving unit 800 disposed inside the upper portion 610 to the inside of the upper portion 610 and transfers the heat generated from the driving unit 800 to the case 600.
  • the molding part (not shown) may be formed by curing a molding liquid.
  • the lower portion 630 is coupled to the socket 900.
  • the lower portion 630 may have a screw thread structure or a screw recess structure which corresponds to the shape of the socket 900 so as to be coupled to the socket 900.
  • the case 600 may be formed of a material having excellent insulation and durability, for example, a resin material.
  • the holder 700 is, together with the case 600, able to seal the driving unit 800. Specifically, the holder 700 is able to seal the driving unit 800 by being coupled to the upper portion 610 of the case 600.
  • the holder 700 may have a shape corresponding to the shape of the driving unit 800, for example, a disk shape.
  • the holder 700 may include a hook 710 allowing the holder 700 to be securely coupled to the upper portion 610 of the case 600.
  • the holder 700 may have a through-hole 730 through which a wire, etc., of the driving unit 800 pass.
  • the driving unit 800 may include a support plate 810 and a plurality of the parts 830 disposed on the support plate 810.
  • the plurality of the parts 830 may include, for example, a DC converter converting AC power supply supplied by an external power supply into DC power supply, a driving chip controlling the driving of the light source module 100, and an electrostatic discharge (ESD) protective device for protecting the light source module 100.
  • ESD electrostatic discharge
  • the driving unit 800 may include a wire connected to the socket 900 and a wire connected to the light source module 100.
  • the driving unit 800 may include an electrode pin as well as the wires.
  • the wire or the electrode pin passes through the through-hole 730 of the holder 700, the through-hole 413 of the first body 400 and the through-hole 313 of the member 300, and can be electrically connected to the light source module 100.
  • the driving unit 800 may receive a power signal from an external power supply through the wire or the electrode pin and may provide the converted power control signal to the light source module 100.
  • the socket 900 may be coupled to the lower portion 630 of the case 600 and may be electrically connected to the external power supply.
  • the socket 900 may be electrically connected to the wire or the electrode pin of the driving unit 800.
  • the socket 900 may have a screw thread structure or a screw recess structure allowing the socket 900 to be coupled to the lower portion 630 of the case 600.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Abstract

La présente invention porte sur un module de source lumineuse qui comprend : un substrat ; au moins un premier dispositif d'émission de lumière qui est disposé sur le substrat et émet une première lumière bleue ayant une longueur d'onde longue ; au moins un second dispositif d'émission de lumière qui est disposé sur le substrat et émet une seconde lumière bleue ayant une longueur d'onde plus courte que la longueur d'onde de la première lumière bleue ; et une couche d'excitation qui est disposée sur le premier dispositif d'émission de lumière et le second dispositif d'émission de lumière et émet une lumière excitée par la première lumière bleue et la seconde lumière bleue, le module de source lumineuse émettant une lumière blanche mélangée avec les première et seconde lumières bleues et la lumière excitée, la lumière blanche ayant une valeur qui est obtenue par division d'une énergie de thérapie par lumen et est supérieure à 0,3.
PCT/KR2012/009566 2011-11-14 2012-11-14 Module de source lumineuse et dispositif d'éclairage WO2013073816A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2011-0118135 2011-11-14
KR1020110118135A KR101209452B1 (ko) 2011-11-14 2011-11-14 광원 모듈
KR1020110141053A KR101315703B1 (ko) 2011-12-23 2011-12-23 조명 장치
KR10-2011-0141053 2011-12-23

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WO2013073816A1 true WO2013073816A1 (fr) 2013-05-23

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CN110398855A (zh) * 2018-04-25 2019-11-01 三星显示有限公司 显示装置以及时分驱动显示装置的方法
CN114877265A (zh) * 2022-05-06 2022-08-09 佛山电器照明股份有限公司 一种激光照明装置及其制造方法

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CN110398855A (zh) * 2018-04-25 2019-11-01 三星显示有限公司 显示装置以及时分驱动显示装置的方法
CN114877265A (zh) * 2022-05-06 2022-08-09 佛山电器照明股份有限公司 一种激光照明装置及其制造方法
CN114877265B (zh) * 2022-05-06 2024-01-23 佛山电器照明股份有限公司 一种激光照明装置及其制造方法

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