WO2016190706A1 - 발광소자패키지 및 이를 포함하는 차량용 조명 - Google Patents
발광소자패키지 및 이를 포함하는 차량용 조명 Download PDFInfo
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- WO2016190706A1 WO2016190706A1 PCT/KR2016/005643 KR2016005643W WO2016190706A1 WO 2016190706 A1 WO2016190706 A1 WO 2016190706A1 KR 2016005643 W KR2016005643 W KR 2016005643W WO 2016190706 A1 WO2016190706 A1 WO 2016190706A1
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- Prior art keywords
- emitting device
- light emitting
- substrate
- device package
- disposed
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/19—Attachment of light sources or lamp holders
- F21S41/192—Details of lamp holders, terminals or connectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/15—Strips of light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/19—Attachment of light sources or lamp holders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/19—Attachment of light sources or lamp holders
- F21S43/195—Details of lamp holders, terminals or connectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
- F21V29/89—Metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/395—Linear regulators
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
Definitions
- An embodiment of the present invention relates to a light emitting device package, and more particularly, to a light emitting device package and a vehicle lighting including the same, which can secure design freedom of a printed circuit board while improving heat dissipation characteristics.
- a light emitting diode basically consists of a junction of a p-type and an n-type semiconductor.
- the LED is a kind of photoelectronic device that emits energy corresponding to the bandgap of the semiconductor in the form of light by combining electrons and holes as voltage is applied.
- Such LEDs include high-brightness light sources for flashlights, back light for liquid crystal displays (LCDs) used in portable electronic products (mobile phones, camcorders, digital cameras, and PDAs), light sources for billboards, light and switch light sources, and indicators.
- LCDs liquid crystal displays
- PDAs portable electronic products
- light sources for billboards light and switch light sources
- indicators As a light source for traffic lights, the range of use is expanding day by day.
- LEDs have been developed in the form of Surface Mount Device (SMD) mounted using Surface Mount Technology (SMT) according to the trend of miniaturization and slimming of information and communication devices.
- SMD Surface Mount Device
- SMT Surface Mount Technology
- the size of the printed circuit board is increased in consideration of the heat dissipation characteristics of the driving element and the LED itself required for driving the LED, thereby bringing the limitation of miniaturization of the module itself.
- a heat sink structure for dissipating heat-generating elements such as LEDs must be disposed essentially, a problem contrary to the above-described trend of miniaturization has arisen.
- Embodiments of the present invention provide a light emitting device package having a light emitting device and a driving device mounted on both surfaces of the heat sink, and a vehicle lighting including the same, with a heat sink interposed therebetween.
- the embodiment of the present invention to provide a bent structure of the thermal conductive substrate having a bent structure, a light emitting device package that can implement the reliability and thickness of the bonding and a vehicle lighting including the same.
- a light emitting device package includes a thermally conductive substrate having at least two or more mounting regions and at least one bent region on which a chip is mounted;
- a light emitting device module including a light emitting device disposed on one surface of the mounting area;
- a driving unit including a driving unit disposed on the other surface opposite to one surface of the mounting area.
- the vehicle lighting according to the embodiment includes a lens housing; And a light emitting device package disposed in the lens housing, wherein the light emitting device package includes: a thermally conductive substrate having at least two or more mounting regions and at least one bent region on which a chip is mounted, and on one surface of the mounting region; And a driving device module including a light emitting device module including a light emitting device, and a driving unit disposed on the other surface of the mounting area.
- the degree of freedom of the apparatus can be improved.
- heat dissipation may be increased by directly attaching a heat sink between the LED array module and the LED drive module.
- FIG. 1 is a cross-sectional view schematically showing a light emitting device package according to an embodiment of the present invention.
- FIG. 2 is a conceptual view illustrating a main part cross-sectional view of the main part of FIG. 1.
- 3 to 5 are diagrams illustrating an application example in which a light emitting device package according to an embodiment of the present invention is applied to vehicle lighting.
- FIG. 6 is a diagram illustrating a detailed configuration circuit of the first driver illustrated in FIG. 1.
- FIG. 7 is a first configuration example of the DC-DC converter 313 shown in FIG. 6.
- FIG. 8 is a second configuration example of the DC-DC converter 313 shown in FIG. 6.
- FIG. 10 is a fourth configuration example of the DC-DC converter 313 shown in FIG. 6.
- FIG. 11 is a first configuration example of the second driver illustrated in FIG. 1.
- FIG. 12 is a second configuration example of the second driver illustrated in FIG. 1.
- FIG. 13 is a third configuration example of the second driving unit illustrated in FIG. 1.
- FIG 14 to 16 are views showing vehicle lighting according to an embodiment of the present invention.
- FIG. 1 is a cross-sectional view schematically showing a light emitting device package according to an embodiment of the present invention
- Figure 2 is a cross-sectional view of the main part of FIG.
- a light emitting device package includes at least two or more mounting regions A: 10A, 10B, and 10C and at least one bent region C: 10D and 10E on which a chip is mounted.
- the light emitting device module (X) including a thermally conductive substrate 10 having a) and a light emitting device 21 disposed on one surface of the mounting area, and a driver 31 disposed on the other surface opposite to one surface of the mounting area. It may be configured to include a driving device module (Y) including, 32, 33.
- the light emitting device package according to an embodiment of the present invention is characterized in that it is possible to implement a bent structure by extending from the flat type.
- the light emitting device package having the structure as described above enables a large number of light emitting devices to be mounted in a limited space, as well as a slim package thickness, thereby maximizing design freedom.
- the light emitting device module X may include a light emitting device 21 for emitting light and a first substrate 20 on which the light emitting device 21 is mounted.
- the first substrate 20 may be disposed on the surface of the thermally conductive substrate 10 via the mounting region and the bent region through the adhesive insulating layer 40.
- the problem of the structure having such a bending structure is that when the substrate or the adhesive layer is bent and bound at the points C1, C2, D1, and D2 that are bent, as shown in FIG.
- the problem is that the substrate is broken. Accordingly, in the embodiment of the present invention, it is possible to apply a flexible printed circuit board based on a polyimide film having a flexible substrate. Furthermore, in the case of the adhesive insulation layer, unlike the conventional method of increasing the thickness in order to secure the adhesion reliability of the bending point, it is possible to implement the adhesive layer very thin using the autoclave method.
- the first substrate 20 may be arranged to be insulated from the thermally conductive substrate 10, and in particular, may be disposed in a structure in which one surface is in contact with the thermally conductive substrate 10.
- the adhesive insulating layer 40 may be disposed between the surfaces of the thermally conductive substrate 10 in contact with one surface of the first substrate 20.
- the first substrate 20 may be any one of a resin-based printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, and an FR-4 substrate. can do.
- PCB resin-based printed circuit board
- metal core PCB metal core PCB
- flexible PCB flexible PCB
- ceramic PCB ceramic PCB
- FR-4 substrate an FR-4 substrate.
- the light emitting device 21 is configured to include an optical device for emitting light, and is a concept that encompasses a variety of light sources, for example, a solid light emitting device may be applied.
- the solid light emitting device may be any one selected from LED, OLED, laser diode (LD), Laser, and VCSEL.
- the LED array module which is implemented by mounting a plurality of light emitting devices of the present invention on a flexible printed circuit board (first substrate), may be implemented with a structure in which the thermally conductive substrate is disposed along the surface of the thermally conductive substrate.
- the first substrate 20 may mount a plurality of light emitting elements 21 to make an LED array module (LAM), and the first substrate 20 may be mounted with a light emitting element 21 such as an LED.
- LAM LED array module
- the first substrate 20 may be mounted with a light emitting element 21 such as an LED.
- a plurality of electrode lines to be electrically connected to the light emitting device 21 can be made.
- the light emitting device 21 is mounted in the through hole of the first substrate 20 so that the light emitting device 21 can be connected to the electrode line, and the reflective member having a radial reflector on one side is integrally fixed with epoxy resin or the like. Can be implemented to
- the driving device module (Y) is disposed on the other surface of the thermally conductive substrate, and includes a second substrate 30 including driving units 31, 32, 33 electrically connected to the light emitting device module. Can be configured.
- an adhesive insulating layer 40 may be disposed between the second substrate 30 and the thermal conductive substrate 10.
- the driving device module may be implemented as an LED drive module (LDM).
- the driving unit includes a first driving unit 31, a second driving unit 32, and other elements 33, and in this case, the second substrate 30 is a resin-based printed circuit board (PCB).
- PCB printed circuit board
- the metal core PCB, the flexible PCB, the ceramic PCB, or the FR-4 substrate can be used.
- the second substrate 30 forms the LED drive module (LDM) capable of driving the LED by mounting the first driver 31 and the second driver 32.
- LDM LED drive module
- the second substrate 30 includes a plurality of through holes, and the first driving part 31 and the second driving part 32 may be mounted through the through holes. do.
- first substrate 20 and the second substrate 30 may include a via hole for mounting a chip, a via hole for electrical connection of each layer, a through hole including a thermal via hole for easy thermal diffusion, and the like. It can be configured to include.
- the thermally conductive substrate 10 functions as a heat sink that receives heat generated by the light emitting element 21 and emits it to the outside, and at the same time, supports a printed circuit board for mounting the light emitting element and the driving unit. Can be implemented. Therefore, thermally conductive plastic may be applied to the thermally conductive substrate 10.
- the thermally conductive substrate 10 may be formed of a plastic substrate such as a PC, or a resin material having excellent electrical insulation properties, heat resistance, and lifespan, such as a thermally conductive acrylic interface elastomer, may be applied.
- the thermally conductive substrate 10 may be a metal substrate having a very excellent thermal conductivity function.
- a substrate to which a material such as Al or an alloy containing Al is applied may be applied.
- the thermally conductive substrate 10 may be manufactured by extruding into a thin plate and then pressing to improve heat dissipation and manufacturing efficiency.
- the thermally conductive substrate 10 may exhibit a high thermal conductivity of about 200 W / mK, thereby maximizing heat dissipation efficiency.
- the thermally conductive substrate 10 may be made of a material such as magnesium, beryllium, aluminum, zirconium, thorium, and lithium.
- the thermally conductive substrate 10 is extruded from a material having a magnesium content of 90% or more, and the remaining 10% content is various such as beryllium, aluminum, zirconium, thorium, lithium, etc. to improve physical properties such as heat resistance and oxidation resistance. Substances may be included.
- the thickness of the first substrate and the second substrate may be thinner than that of the thermally conductive substrate. This increases the thickness of the heat-conducting substrate that has a heat-sink function to increase heat dissipation characteristics in the same space, and at the same time, the polyimide film is used as the base of the printed circuit board layer to maximize the width of the heat-conductive substrate that has a heat sink function. By implementing a very thin flexible printed circuit board to have the effect of maximizing the heat dissipation characteristics.
- the first substrate 20 and the second substrate 30 are disposed at positions corresponding to the one surface and the other surface of the thermal conductive substrate 10, and the light emitting device is mounted. Since the drive elements are mounted on the opposite side of the mounting area and are symmetrically disposed, local bending may be prevented due to the expansion rate of the thermally conductive substrate due to expansion by an external heat source.
- a crimping method using an autoclave is applied to the thermally conductive substrate 10 by bonding the adhesive insulating layer 40 to the first substrate and the second substrate.
- Bonding the printed circuit board to the thermally conductive substrate 10 which performs the heat sinking function may be performed by simply using an adhesive or by using a hot stacking method.
- the thickness of the adhesive layer is usually applied to a thickness of 250 ⁇ m or more to ensure the reliability of the adhesive, this thickness of the adhesive layer causes a problem that the heat resistance that interferes with the heat transfer to the heat sink is increased, heat In the compression method, a fine air layer is formed between the heat sink and the bonding interface of the printed circuit board, thereby degrading the reliability of the adhesion.
- the autoclave technique it is possible to significantly reduce the thickness of the adhesive insulating layer, it is possible to reduce the thickness of the adhesive insulating layer to a thickness of less than 50 ⁇ m usually more than 250 ⁇ m. Will be.
- the generation of an air layer hardly occurs at an interface between the adhesive insulating layer, the printed circuit board, and the thermal conductive substrate, thereby improving the reliability of the adhesive.
- the adhesive insulating layer may be formed to a thickness of 50 ⁇ m or less. In this case, when the thickness of the adhesive insulating layer exceeds 50 ⁇ m, the adhesiveness is improved, but when the autoclave is pressed, the adhesive insulating layer is pushed to the outer side of the first substrate or the second substrate and the appearance is damaged. Covering the surface causes a problem that the thermal conductivity is degraded.
- the adhesive insulating layer serves as an insulating layer to prevent an electrical short between the LED array module or the LED drive module and the thermally conductive substrate.
- Table 1 shows the thickness of each layer when the bonding of the adhesive insulating layer and the first substrate on the thermally conductive substrate in the structure of FIG. 2 using only the adhesive insulating layer, and Table 2 shows an embodiment of the present invention. Comparisons are made with the autoclave technique according to.
- the thickness of the existing adhesive insulation layer can be implemented in about 1/5 or less from 250 ⁇ m 50 ⁇ m.
- 3 to 5 show an example of applying a light emitting device package according to an embodiment of the present invention for vehicle lighting.
- FIG. 3 is a perspective view of the structure of the lamp housing H disposed on the headlight or taillight of the vehicle
- FIG. 4 is a side view of FIG. 3.
- the lamp housing of the vehicle is limited to a very limited space where the lamp of the vehicle is present.
- the light emitting device mounting area may be stepped (H1 to H2). Will be designed.
- a printed circuit board for mounting LEDs is disposed on one surface of each step, and a plurality of module structures for mounting separate heat sinks are inevitably provided. Accordingly, in the related art, the area of the entire light emitting package is increased in a very large volume, making installation impossible.
- the heat conductive substrate is used as a heat sink, and the total thickness and the package size can be minimized by mounting the LEDs and the driving elements on the upper and lower portions of the heat conductive substrate, respectively. Application to such a structure becomes possible.
- the vehicle lamp may be implemented in a very slim and simple structure, as shown in FIG. 5. Even when the lens F is coupled, there is almost no change in the size thereof.
- the light emitting device package of the present invention requires a limited number of design changes, such as a limited installation place such as a vehicle, such as a headlight, a tail light, a lamp for construction equipment, and an installation place such as indoor lighting in a limited space. If it is possible to apply.
- the first driver 31 may be a constant voltage control circuit for constant voltage control
- the second driver 32 may be a constant current control circuit for constant current control.
- FIG. 6 is a diagram illustrating a detailed configuration circuit of the first driver illustrated in FIG. 1.
- the first driver 31 includes a battery 311, a protection circuit 312, a DC-DC converter 313, a feedback unit 314, and a pulse width modulator 316.
- the battery 311 may supply input power for driving the LED array module to the first driver 31.
- the battery 311 is an example of a power supply means for supplying the input power, which may be replaced by other means.
- the battery 311 is included in the first driver 31 in the drawing, the battery 311 is the first driver 31 because it is a means for supplying power to the first driver 31. It is preferable that it is comprised separately.
- the battery 311 may be a battery of a vehicle, and the first driver 31 may be disposed on a substrate separated from the battery 311. Can be arranged.
- the battery 311 may be configured to supply DC power to the DC-DC converter 313, but is not limited thereto.
- the input power may be included in a range of 9V to 16V, but It is not limited.
- the protection circuit unit 312 is configured to protect the internal configuration of the first driver 31 from the power input to the battery 311.
- the protection circuit part 312 is disposed between the battery 311 and the DC-DC converter 313, thereby blocking, absorbing and absorbing noise or electromagnetic waves emitted from the device and exiting through the power line. It can be bypassed to the ground.
- the protection circuit unit 312 may further include a reverse voltage prevention circuit for preventing the voltage from flowing in the reverse direction.
- the DC-DC converter 313 adjusts the voltage received from the protection circuit unit 312 according to the pulse signal output through the pulse width modulator 316, which will be described later, and outputs the voltage to the second driver 32.
- the DC-DC converter 313 adjusts the voltage received from the protection circuit unit 313 based on a preset reference voltage Vref and outputs the voltage to the second driver 32.
- the DC-DC converter 313 is a buck-boost type converter, a boost type converter, a buck type converter, a buck & boost type converter, a zeta type converter and a sepic type converter. It may be composed of any one.
- the pulse width modulator 316 is disposed between the DC-DC converter 313 and the feedback unit 314, and based on the output signal of the feedback unit 314, the output voltage of the DC-DC converter 313 ( A pulse signal for adjusting Vo) may be generated and a switching state of the switching element constituting the DC-DC converter 313 may be controlled according to the generated pulse signal.
- the feedback unit 314 may include a comparator 315 and a first resistor R1 and a second resistor R2 connected in series with each other at an output terminal of the DC-DC converter 313.
- One end of the first resistor R1 is connected to the output terminal of the DC-DC converter 313, and the other end thereof is connected to one end of the second resistor R2.
- one end of the second resistor R2 is connected to the other end of the first resistor R1 and the other end is grounded.
- the first resistor R1 and the second resistor R2 are voltage divider resistors, and thus detect and output an output voltage Vo output from the DC-DC converter 313.
- Comparator 315 is composed of an operational amplifier (OP-AMP), the reference voltage (Vref) is input to the positive (+) terminal of the comparator 315, the first resistor (R1) and the negative (-) terminal A voltage divided by the second resistor R2 is applied.
- OP-AMP operational amplifier
- the feedback unit 314 is a difference value between the reference voltage (Vref) and the output voltage (Vo) so that the output voltage (Vo) of the DC-DC converter 313 converges to the predetermined reference voltage (Vref). May be output to the pulse width modulator 316. Accordingly, the pulse width modulator 316 outputs a pulse signal for compensating the output value of the DC-DC converter 313 based on the difference value, so that the reference voltage is generated by the DC-DC converter 313. The output voltage Vo corresponding to Vref is output.
- FIG. 7 is a first configuration example of the DC-DC converter 313 shown in FIG. 6,
- FIG. 8 is a second configuration example of the DC-DC converter 313 shown in FIG. 6, and
- FIG. 9 is shown in FIG. 6.
- a third configuration example of the illustrated DC-DC converter 313 is shown, and
- FIG. 10 is a fourth configuration example of the DC-DC converter 313 illustrated in FIG. 6.
- the first switch Q1 is disposed between the protection circuit unit 312 and the first inductor L1, and the switch is turned on according to the control of the pulse signal received from the pulse width modulator 316. can be turned on / off.
- the DC-DC converter 313 may have a reverse current caused by energy stored in the first inductor L1 in the direction of the first diode D1. It may be transferred to the load and the capacitor (C1). That is, at this time, the DC-DC converter 313 may operate as a buck converter.
- the first diode D1 and the second diode D2 prevent back current from being transferred from the second driver 32 to the DC-DC converter 313. That is, the first diode D1 and the second diode D2 allow current to flow from the DC-DC converter 313 to the second driver 32 only in one direction.
- the DC-DC converter 313 may boost the input voltage received from the protection circuit unit 312 and output the voltage to the second driver 32.
- the DC-DC converter 313 may be a buck-boost type converter.
- the DC-DC converter 313 may include a first switching element Q1, a first diode D1, and a first inductor L1.
- the first switching element Q1 is connected in series with the input power source.
- the first switching element Q1 may include a power factor preventing diode.
- the first diode D1 may be connected in series with the first switching element Q1.
- the first inductor L1 may be connected in parallel with the first switching element Q1.
- the first switching element Q1 is turned on by the pulse signal supplied during the first period, and thus the first switching element Q1 is turned on.
- the input voltage is charged to the first inductor L1.
- the DC-DC converter 313 turns off the first switching element Q1 by a pulse signal supplied during a second period, whereby the inductor voltage charged in the first inductor L1 is reduced. It may be supplied to the second driver 32.
- the DC-DC converter 313 may be a zeta type converter.
- the DC-DC converter 313 may include a first switching element Q1, a first inductor L1, a first capacitor C1, and a first diode D1.
- the first switching element Q1 has a drain terminal connected to an output terminal of the protection circuit unit 312, a gate terminal connected to an output terminal of the pulse width modulation unit 316, and a source terminal of one end and a first terminal of the first inductor. It is connected to one end of the capacitor.
- One end of the first inductor L1 is connected to the source terminal of the first switching element Q1 and the other end is grounded.
- One end of the first capacitor C1 is connected to the source end of the first switching element Q1 and one end of the first inductor L1, and the other end thereof is connected to the anode end of the first diode D1.
- the first diode D1 has an anode terminal connected to the other end of the first capacitor C1 and the output terminal of the DC-DC converter 313, and the cathode terminal is grounded.
- the DC-DC converter 313 may be a converter of a SECIC type.
- the DC-DC converter 313 may include a first switching element Q1, a first inductor L1, a second inductor L2, a first capacitor C1, and a first diode D1. .
- One end of the first inductor L1 is connected to the output end of the protection circuit unit 312, and the other end thereof is connected to the drain end of the first switching element Q1 and one end of the first capacitor C1.
- the first switching element Q1 has a drain end connected to the other end of the first inductor L1 and one end of the first capacitor C1, and a gate end connected to the output end of the pulse width modulator 316.
- the source stage is grounded.
- One end of the first capacitor C1 is connected to the other end of the first inductor L1 and the drain end of the first switching element Q1, and the other end of the first capacitor C1 is connected to one end of the second inductor L2 and the first diode D1. Is connected to the cathode end of the
- the first diode D1 has a cathode terminal connected to the other end of the first capacitor C1 and one end of the second inductor L2, and an anode terminal connected to the output terminal of the DC-DC converter 313.
- FIG. 11 is a first configuration example of the second drive unit shown in FIG. 1
- FIG. 12 is a second configuration example of the second drive unit shown in FIG. 1
- FIG. 13 is a third configuration example of the second drive unit shown in FIG. 1.
- 11 to 13 illustrate a second driver 32
- the second driver 32 is connected to the light emitting device 21 and includes a constant current control circuit for controlling the constant current of the light emitting device 21.
- the constant current control circuit may be a linear circuit.
- the second driver 32 may include a first resistor R1, a first switching device S1, a second switching device S2, and a second resistor R2.
- One end of the first resistor R1 is connected to the power input terminal Vin, and the other end thereof is connected to the base terminal of the second switching element S2 and the collector terminal of the first switching element S1.
- the first switching element S1 has a collector end connected to the other end of the first resistor R1 and the base end of the second switching element S2, and the base end of the first switching element S1 and the emitter end of the second switching element S2; One end of the second resistor R2 is connected and the emitter end is grounded.
- the second switching element S2 has a collector end connected to an output end of the light emitting element 21, a base end connected to the other end of the first resistor R1, and a collector end of the first switching element S1, The emitter terminal is connected to the base terminal of the first switching element S1 and one end of the second resistor R2.
- One end of the second resistor R2 is connected to the emitter end of the second switching element S2 and the base end of the first switching element S1, and the other end is grounded.
- the second driver 32 includes a linear circuit unit 321, a first switching element S1, and a first resistor R1.
- first switching element S1 and the first resistor R1 correspond to the second switching element S2 and the second resistor R2 in FIG. 11.
- the linear driver is included in the second driver 32.
- the second driver 32 may also be configured as a type including only the linear circuit unit 321 and the first resistor R1.
- FIG 14 to 16 are views showing vehicle lighting according to an embodiment of the present invention.
- the vehicle 100 generally includes a head lamp unit (not shown) at the front and a tail lamp unit 110 at the rear.
- the tail lamp unit 110 for example, will be described for the vehicle lighting of the present invention.
- the tail lamp unit 110 of the vehicle 100 may be disposed on a curved surface.
- the tail lamp unit 110 includes a plurality of lamps, and by using the light emission of each lamp, the driver of the other vehicle and the driver may provide information on the driving state of the vehicle, such as braking, reversing, left and right width of the vehicle, direction indication, and the like. And / or allow pedestrians to know.
- the tail lamp unit 110 includes the light emitting device package described above.
- the light emitting device module constituting the tail lamp unit 110 is disposed above the thermal conductive substrate 10, and the driving device module is disposed below the thermal conductive substrate 10.
- the included light emitting device 21 is driven according to an operating voltage supplied from the driving device module to generate light.
- the tail lamp unit 110 should have a projection area of about 12.5 square centimeters (cm2) or more when viewed from a horizontal angle of 45 degrees of the vehicle's outer axis with respect to the center point, for example, the brightness for braking is about 40 to 420 candelas (cd).
- the safety standards must be met. Therefore, when the tail lamp unit 110 measures the amount of light in the light quantity measuring direction, the amount of light above the reference value should be provided.
- the idea of the present invention is not limited to the safety standard and the required light amount for the tail lamp unit 110, and may be applied without change even if the safety standard or the required light amount is changed.
- the tail lamp unit 110 may have a curved surface in its entirety, a part of the tail lamp unit 110 may have a curved surface, and some of the lamps may not have a curved surface.
- the first lamp 111 disposed at the center of the tail lamp unit 110 may not have a curved surface, and the second lamp 112 disposed at the outside may have a curved surface.
- the present invention is not limited thereto, and the first lamp 111 disposed at the center may have a curved surface, and the second lamp 112 disposed outside may not have a curved surface.
- FIG. 15 shows a lamp having a curved surface disposed outside the tail lamp unit.
- the vehicle tail lamp unit 110 may include a first lamp unit 1111, a second lamp unit 1112, a third lamp unit 1113, and a housing 113. Can be.
- the first lamp unit 1111 may be a light source for the role of a turn signal
- the second lamp unit 1112 may be a light source for the role of a road light
- the third lamp unit 1113 may serve as a stop light. It may be a light source for, but is not limited to this, the role may be interchanged.
- the housing 113 may accommodate the first to third lamp units 1111, 1112, and 1113, and may be made of a light-transmissive material.
- the housing 113 may have a curvature according to the design of the vehicle body, and the first to third lamp units 1111, 1112, and 1113 may implement a surface light source that can be bent, depending on the shape of the housing 113. Can be.
- the embodiment forms a surface light source with a small number of light sources by forming a light mixing region in a vacant space between the light source and the optical system and a plurality of light emitting elements having different arrangement directions with respect to a predetermined reference direction.
- a light quantity and light intensity suitable for the safety standards of the vehicle lamp it is possible to improve the economics of the lamp unit and the freedom of product design.
- the present invention by providing an integrated module in which the light emitting device module and the driving device module are mounted on both surfaces of the heat sink with the heat sink interposed therebetween, it is possible to improve the spatial freedom of the apparatus.
- the heat dissipation characteristics may be improved by directly attaching the light emitting device module including the light emitting device and the driving device module including the driving device with the heat sink interposed therebetween.
- the light emitting device module and the driving device module are directly attached to the heat sink, which is a thermally conductive substrate, and have excellent heat dissipation characteristics. Modules can be integrated on both sides of a single substrate, allowing greater design freedom for substrates of the same area. Furthermore, in the conventional heat sink, a large number of printed circuit boards (PCBs) are required by mounting a plurality of LED chips, ICs, resistor chips, etc. on the top surface, and forming heat dissipation fins on the bottom surface of the heat sink.
- the LED array module and LED drive module are configured on the top and bottom surfaces of the heat sink, respectively, and the additional cost is added to solve the problem of increased product cost.
- the LED array module (LED) and the LED drive are solved. Since the LED Drive Module (LDM) is integrated, the space freedom of the device can be increased.
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Abstract
Description
접착 방법 | layer | 재질 | 두께(mm) |
Adhesive적용 | FPCB(제1기판) | PI | 0.13 |
Adhesive(접착절연층) | - | 0.25 | |
열전도성 기판 | AL | 1.0 | |
Adhesive(접착절연층) | - | 0.25 | |
FPCB(제2기판) | PI | 0.13 | |
TTL(전체두께) | 1.76 |
접착 방법 | layer | 재질 | 두께(mm) |
Adhesive적용 + 오토클레이브 | FPCB(제1기판) | PI | 0.13 |
Adhesive(접착절연층) | - | 0.05 | |
열전도성 기판 | AL | 1.0 | |
Adhesive(접착절연층) | - | 0.05 | |
FPCB(제2기판) | PI | 0.13 | |
TTL(전체두께) | 1.36 |
Claims (20)
- 칩이 실장되는 적어도 2 이상의 실장영역과 적어도 1 이상의 절곡영역을 구비하는 열전도성 기판;상기 실장영역의 일면상에 배치되는 발광소자를 포함하는 발광소자모듈; 및상기 실장영역의 일면에 대향하는 타면에 배치되는 구동부를 포함하는 구동소자모듈을 포함하는발광 소자 패키지.
- 제 1항에 있어서,상기 발광 소자 모듈은,상기 열전도성 기판과 일표면이 접촉하며 상기 실장영역 및 상기 절곡영역에 배치되는 제1기판과,상기 실장영역에 대응되는 상기 제1기판의 타표면에 실장되는 다수의 발광소자를 포함하는발광 소자 패키지.
- 제 2항에 있어서,상기 구동 소자 모듈은,상기 열전도성 기판과 일표면이 접촉하며, 상기 실장영역의 타면 및 상기 절곡영역에 배치되는 제2기판과,상기 제2기판의 타표면에 실장되는 구동부를 포함하는발광 소자 패키지.
- 제 3항에 있어서,상기 열전도성 기판과 상기 제1기판 사이에 배치된 제 1 접착 절연층; 및상기 열전도성 기판과 상기 제2기판 사이에 배치된 제 2 접착절연층을 더 포함하는발광 소자 패키지.
- 제 4항에 있어서,상기 제1기판 및 상기 제2기판은연성회로기판(flexible PCB)을 포함하는발광 소자 패키지.
- 제 5항에 있어서,상기 적어도 2 이상의 실장영역 중 발광소자가 실장되는 실장영역의 반대면에 상기 구동부가 배치되는발광 소자 패키지.
- 제 5항에 있어서,상기 제 1 및 2 접착 절연층 각각은 두께가 50um 이하인발광 소자 패키지.
- 제 5항에 있어서,상기 열전도성 기판은 금속기판을 포함하는발광 소자 패키지.
- 제 8항에 있어서,상기 금속기판은알루미늄(Al) 또는 알루미늄 합금으로 형성되는발광 소자 패키지.
- 제 4항에 있어서,상기 구동부는,동작 전압을 공급하는 제 1 구동부와,상기 제 1 구동부로부터 상기 동작 전압을 수신하고, 상기 수신된 동작 전압을 토대로 상기 발광 소자 모듈로 동작 전류를 출력하는 제 2 구동부를 포함하는발광 소자 패키지.
- 제 10항에 있어서,상기 제 1 구동부는,입력 전원을 수신하는 전원 입력부와,적어도 하나의 스위칭 소자를 포함하며, 상기 스위칭 소자의 스위칭 동작에 따라 상기 입력 전원을 변환하여 상기 동작 전압을 출력하는 DC-DC 컨버터와,상기 DC-DC 컨버터의 출력 전압 및 기설정된 기준 전압을 비교하고, 상기 비교 결과에 따른 제어 값을 출력하는 피드백부와,상기 피드백부를 통해 출력되는 제어 값을 이용하여 상기 DC-DC 컨버터에 펄스 신호를 출력하는 펄스폭 변조부를 포함하는발광 소자 패키지.
- 제 11항에 있어서,상기 DC-DC 컨버터는,벅 컨버터, 부스트 컨버터, 벅-부스트 컨버터, 벅 & 부스트 컨버터, 제타 컨버터 및 세픽 컨버터 중 어느 하나를 포함하는발광 소자 패키지.
- 제 11항에 있어서,상기 피드백부는,상기 DC-DC 컨버터의 출력 단에 연결되는 분압 저항과,상기 분압 저항을 통해 출력되는 전압 및 상기 기준 전압을 비교하여 상기 제어 값을 출력하는 비교기를 포함하는발광 소자 패키지.
- 제 10항에 있어서,상기 제 2 구동부는,상기 동작 전류의 제어를 위한 선형 회로부를 포함하는발광 소자 패키지.
- 렌즈 하우징; 및상기 렌즈 하우징 내에 배치되는 발광 소자 패키지를 포함하며,상기 발광 소자 패키지는,칩이 실장되는 적어도 2 이상의 실장영역과 적어도 1 이상의 절곡영역을 구비하는 열전도성 기판과,상기 실장영역의 일면상에 배치되는 발광소자를 포함하는 발광소자모듈과,상기 실장영역의 일면에 대향하는 타면에 배치되는 구동부를 포함하는 구동소자모듈을 포함하는차량용 조명.
- 제 15항에 있어서,상기 발광 소자 모듈은,상기 열전도성 기판과 일표면이 접촉하며 상기 실장영역 및 상기 절곡영역에 배치되는 제1기판과,상기 실장영역에 대응되는 상기 제1기판의 타표면에 실장되는 다수의 발광소자를 포함하는차량용 조명.
- 제 16항에 있어서,상기 구동 소자 모듈은,상기 열전도성 기판과 일표면이 접촉하며, 상기 실장영역의 타면 및 상기 절곡영역에 배치되는 제2기판과,상기 제2기판의 타표면에 실장되는 구동부를 포함하는차량용 조명.
- 제 17항에 있어서,상기 열전도성 기판과 상기 제1기판 사이에 배치된 제 1 접착 절연층; 및상기 열전도성 기판과 상기 제2기판 사이에 배치된 제 2 접착절연층을 더 포함하는차량용 조명.
- 제 18항에 있어서,상기 제1기판 및 상기 제2기판은연성회로기판(flexible PCB)을 포함하는차량용 조명.
- 제 19항에 있어서,상기 적어도 2 이상의 실장영역 중 발광소자가 실장되는 실장영역의 반대면에 상기 구동부가 배치되는차량용 조명.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020177035555A KR102047950B1 (ko) | 2015-05-28 | 2016-05-27 | 발광소자패키지 및 이를 포함하는 차량용 조명 |
EP16800345.7A EP3306182B1 (en) | 2015-05-28 | 2016-05-27 | Light-emitting device package and vehicular light comprising same |
US15/577,276 US10344933B2 (en) | 2015-05-28 | 2016-05-27 | Light-emitting device package and vehicular light comprising same |
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KR20150074561 | 2015-05-28 | ||
KR10-2015-0074561 | 2015-05-28 |
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WO2016190706A1 true WO2016190706A1 (ko) | 2016-12-01 |
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PCT/KR2016/005643 WO2016190706A1 (ko) | 2015-05-28 | 2016-05-27 | 발광소자패키지 및 이를 포함하는 차량용 조명 |
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US (1) | US10344933B2 (ko) |
EP (1) | EP3306182B1 (ko) |
KR (1) | KR102047950B1 (ko) |
WO (1) | WO2016190706A1 (ko) |
Cited By (2)
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WO2018134182A1 (de) * | 2017-01-18 | 2018-07-26 | Osram Opto Semiconductors Gmbh | Elektrische schaltung und verfahren zum betrieb einer elektrischen schaltung |
CN109210487A (zh) * | 2017-06-30 | 2019-01-15 | Lg电子株式会社 | 车辆用灯及车辆 |
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KR102043062B1 (ko) * | 2017-12-05 | 2019-11-11 | 엘지전자 주식회사 | 차량용 램프 및 차량 |
US10641444B2 (en) * | 2018-01-09 | 2020-05-05 | Lin-Yu Cao | SMT LED light string which control chip is embedded in light bead |
SE542144C2 (en) * | 2018-05-28 | 2020-03-03 | Husqvarna Ab | Headlight assembly for a mower |
JP7298995B2 (ja) * | 2018-06-05 | 2023-06-27 | 株式会社小糸製作所 | ランプユニットの製造方法 |
JP7212823B2 (ja) * | 2019-03-18 | 2023-01-26 | 株式会社小糸製作所 | 光源モジュール及び車輌用灯具 |
KR20220109950A (ko) * | 2021-01-29 | 2022-08-05 | 현대모비스 주식회사 | 차량용 램프 |
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- 2016-05-27 EP EP16800345.7A patent/EP3306182B1/en active Active
- 2016-05-27 US US15/577,276 patent/US10344933B2/en active Active
- 2016-05-27 KR KR1020177035555A patent/KR102047950B1/ko active IP Right Grant
- 2016-05-27 WO PCT/KR2016/005643 patent/WO2016190706A1/ko active Application Filing
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US8541947B2 (en) * | 2007-03-22 | 2013-09-24 | Johnson Controls Technology Company | Lighting devices |
EP2615358A2 (en) * | 2012-01-12 | 2013-07-17 | LongWide Technology Inc. | LED 3D curved lead frame of illumination device |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2018134182A1 (de) * | 2017-01-18 | 2018-07-26 | Osram Opto Semiconductors Gmbh | Elektrische schaltung und verfahren zum betrieb einer elektrischen schaltung |
CN109210487A (zh) * | 2017-06-30 | 2019-01-15 | Lg电子株式会社 | 车辆用灯及车辆 |
CN109210487B (zh) * | 2017-06-30 | 2021-10-22 | Zkw集团有限责任公司 | 车辆用灯及车辆 |
Also Published As
Publication number | Publication date |
---|---|
KR20180000727A (ko) | 2018-01-03 |
US10344933B2 (en) | 2019-07-09 |
EP3306182A1 (en) | 2018-04-11 |
EP3306182B1 (en) | 2020-08-05 |
KR102047950B1 (ko) | 2019-11-27 |
EP3306182A4 (en) | 2018-04-11 |
US20180156407A1 (en) | 2018-06-07 |
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