WO2013135470A1 - Flächenlichtquelle - Google Patents
Flächenlichtquelle Download PDFInfo
- Publication number
- WO2013135470A1 WO2013135470A1 PCT/EP2013/053356 EP2013053356W WO2013135470A1 WO 2013135470 A1 WO2013135470 A1 WO 2013135470A1 EP 2013053356 W EP2013053356 W EP 2013053356W WO 2013135470 A1 WO2013135470 A1 WO 2013135470A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- scattering body
- light source
- radiation
- scattering
- main
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/58—Optical field-shaping elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/44—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 coatings, e.g. passivation layer or anti-reflective coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/507—Wavelength conversion elements the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/52—Encapsulations
- H01L33/54—Encapsulations having a particular shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/64—Heat extraction or cooling elements
- H01L33/644—Heat extraction or cooling elements in intimate contact or integrated with parts of the device other than the semiconductor body
-
- 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
- F21Y2105/00—Planar light sources
-
- 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]
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0018—Redirecting means on the surface of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
-
- 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
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0091—Scattering means in or on the semiconductor body or semiconductor body package
Definitions
- Description area light source A surface light source is specified.
- One problem to be solved is one
- Specify surface light source which has a high efficiency at comparatively small geometric dimensions.
- This task is among others by a
- Area light source one or more optoelectronic
- the semiconductor chips may be LEDs, short LEDs.
- the semiconductor chips are set up to generate a primary radiation.
- the semiconductor chips have a main radiation side.
- Radiation main side is preferably perpendicular to one
- the area light source comprises a plurality of semiconductor chips
- all the semiconductor chips can be identical in construction and can be designed to generate radiation of the same wavelength. It is also possible that differently designed
- Semiconductor chips for example, for generating radiation of different wavelengths, are present.
- a surface light source here is a light source with an extended luminous surface. In contrast to point light sources have only a very small luminous surface. Frequent applications of area light sources are in general lighting, for example at
- Area light source one or more scattering bodies.
- the at least one scattering body is a scattering of
- Main emission of the at least one semiconductor chip is arranged downstream of the scattering body of the main radiation side.
- the scattering body is located above the main radiation side of the semiconductor chip. It is possible that between the main radiation side and the
- the scattering body preferably completely covers the semiconductor chip, as seen in plan view.
- the diffuser can be flush with the
- the scattering body has one or more main emission directions.
- the main emission direction is that direction in which the scattering body emits a maximum radiation power per solid angle.
- each main side of the scattering body is assigned a main emission direction.
- the scattering body has exactly two main emission directions and exactly two main emission sides.
- Main emission directions available they can by be formed local maxima of the angle-dependent radiation intensity.
- Main emission direction of the scattering body is at least one of the main emission directions or are all
- Main emission directions oriented obliquely to the main emission direction of the semiconductor chip. For example, an angle between the main emission direction and the
- Main direction of radiation at least 45 ° or at least 60 ° or at least 70 ° or at least 75 °.
- this angle shall not exceed 92 ° or not more than 90 ° or not more than 85 ° or not more than 80 °. In at least one embodiment, the
- Area light source one or more optoelectronic
- Semiconductor chips having a main radiation side for generating a primary radiation.
- a scattering body of the area light source is arranged downstream of the main radiation side along a main emission direction of the semiconductor chips.
- the scattering body is set up for a scattering of the primary radiation.
- the main emission direction of the scatterer is oblique to
- the scattering body thus has a different radiation characteristic than the
- the light has a preferential polarization.
- system efficiency in use as backlight of liquid crystal displays can be increased.
- the term height is here meant a dimension in the direction perpendicular to the extended, luminous surface.
- Area light source seen in plan view, an average lateral dimension of at least 50 mm or at least 100 mm or at least 150 mm.
- Area light source can therefore mean that a
- Homogeneous may mean that a local radiant power deviates by at most 40% from an average of the radiant power, averaged over the entire radiant side.
- the color locus of a locally emitted radiation preferably deviates from a color site averaged over the emission side by at most 0.02 units or by at most 0.01 units in the CIE standard color chart.
- the scattering body has the shape of a rotation body.
- the scattering body is then shaped as a cylinder or as a cone or as a truncated cone.
- the scattering body has a polyhedral shape. It is the scattering body then shaped, for example, as a prism or as a pyramid or as a truncated pyramid.
- the scattering body has a cross-sectional area with a triangular basic shape.
- Basic form here means that an outer contour of the
- Scatter body seen in cross section, has the shape of a triangle. It is possible that in determining the
- Main emission of the semiconductor chip and preferably also perpendicular to a main extension direction, such as a
- Scattering body has a trapezoidal basic shape.
- the scattering body has a cross-sectional area with a round shape.
- Example is the scattering body in cross section a triangle, a rectangle or a trapezoid with rounded corners.
- the scattering body seen in cross-section, may be oval in shape or have the shape of a semicircle or a semi-ellipse.
- a width of the scattering body decreases along the main emission direction. In other words, then the scattering body in a direction perpendicular to the radiation main side and away from the
- the decrease in the width of the scattering body along the main emission direction is preferably monotonous or strictly monotonic.
- the scattering body along the main emission and / or along a
- the scattering body has a radiation-permeable matrix material.
- Matrix material may be PMMA, a glass, a silicone, an epoxy and / or a silicone-epoxy hybrid material
- Thermoplastic plastics such as polycarbonate can also be used as matrix material for the scattering body.
- matrix material scattering particles are embedded.
- the scattering particles preferably have one of the
- the scattering particles may be titania particles or alumina particles.
- particles of the conversion agent can be embedded in the matrix material. It is possible that in the scattering body, the scattering particles homogeneous or targeted inhomogeneous, approximately at a higher concentration near the semiconductor chips, are distributed.
- the scattering body extends continuously and integrally over a plurality of the semiconductor chips. There are then a plurality of the semiconductor chips, which can be configured identical or can be set up to emit radiation of different wavelengths, under the scattering body and are jointly covered by the scattering body.
- Semiconductor chips which are located under the diffuser, combined to form a multicolor emitting group, in particular an RGB group.
- a multicolor emitting group in particular an RGB group.
- at least one red light, at least one green light and / or at least one blue light-emitting semiconductor chip is located below the scattering body.
- the semiconductor chips are preferably arranged in close proximity. This may mean that an average distance between adjacent semiconductor chips is at most 50% or 25% or 10% of the height of the scattering body.
- the scattering body is rotationally symmetrical. For example, one has
- Lateral surface of the scattering body then the shape of a cone, a truncated cone or a stump of a
- Rotational ellipsoids In accordance with at least one embodiment, at least a part of the semiconductor chips, which are arranged under a common scattering body, are widely spaced from one another. This may mean that a gap between these semiconductor chips at least 100% or 200% or 300% of the amount of
- the scattering body is free of local minima with respect to a height profile across the semiconductor chips.
- the scattering body then has no modulation of the height that correlates with the semiconductor chips.
- the scattering body extends over all the semiconductor chips with a constant height.
- the term constant height may mean that the height of the scattering body remains the same with a tolerance of at most 200% or 100% of a thickness of the semiconductor chips.
- the scattering body has one or more local minima with respect to a height profile over the semiconductor chips.
- the scattering body can then in particular have a modulation of the height that correlates with the semiconductor chips.
- a main extension direction of the scattering body is preferably oriented parallel to this straight arrangement line of the semiconductor chips and may, viewed in plan view, be located above this arrangement line of the semiconductor chips. According to at least one embodiment, the
- the scattering bodies are preferably arranged at a distance from one another on a common carrier.
- Semiconductor chips are preferably oriented perpendicular to a main side of the carrier.
- the scattering bodies or at least part of the scattering bodies are parallel
- all scattering bodies can be aligned parallel to one another. Also the
- Main emission directions of the scattering bodies or at least part of the scattering bodies can be parallel to each other
- At least a part of the scattering bodies or all scattering bodies are arranged transversely to one another or in the shape of a cross.
- arranged transversely to each other means that an angle between the
- Cross-shaped can mean that the scattering bodies, similar to a ribbed vault, interpenetrate and partially overlap. It is possible that in particular such scattering bodies are arranged transversely to each other, which at one edge or at corners of the
- Scattering bodies are located.
- the scattering body seen in plan view, is reticulated.
- the semiconductor chips are then preferably arranged in a regular grid and the scattering body can cover all semiconductor chips or at least a part of the semiconductor chips.
- the scattering body is mounted directly on the main radiation side.
- Scatter body touches the radiation main side.
- side faces of the semiconductor chip are free of the scattering body. In a direction perpendicular to the side surfaces of the semiconductor chip and thus in particular in a direction parallel to
- the semiconductor chip is not covered by the scattering body.
- the scattering body For example, the
- the side surfaces of the semiconductor chip are partially or completely removed from the semiconductor chip
- the side surfaces may touch the diffuser.
- a quotient of a light emission surface of the surface light source and the surface of the radiation main side of the semiconductor chip is at least 100 or at least 250 or at least 1000 or at least 2500.
- Area light source one or more reflectors.
- Reflectors are adapted to irradiate the primary radiation scattered by the scattering body in a direction towards the
- the reflector seen in cross section, has the shape of a symmetrical or asymmetrical quadrilateral. It is possible that the
- Reflector seen in plan view, round, circular, oval, rectangular or rectangular with rounded corners is designed.
- the reflector has a trapezoidal basic shape, in a cross section, in particular perpendicular to the main radiation side of the
- Reflector has a triangular basic shape in cross section.
- the reflector is then shaped, for example, as the lateral surface of a pyramid, a truncated pyramid, a cone or a truncated cone.
- the basic form can be one
- the reflector does not have along a straight line extending side surfaces, but for example paraboloidally curved side surfaces.
- the reflector has an average lateral extent that has an average edge length of the main radiation side of the semiconductor chip by at least a factor 10 or at least a factor 50 or exceeds at least a factor of 100. In other words, the reflector is then, seen in plan view, significantly larger than the semiconductor chip. According to at least one embodiment, the
- Area light source one or more heatsink.
- Heatsink or at least one of the heat sink includes a heat sink top. It is the at least one
- Heatsink top and / or on a side facing away from the heat sink upper side heatsink has.
- Structures can be formed cooling fins.
- the heat sink is set up to reflect the primary radiation. It is possible that the heat sink top parallel to the
- Radiation main side of the semiconductor chip is oriented or that the upper side of the heat sink is inclined thereto.
- the upper side of the heat sink may be flat or in a triangular or trapezoidal shape, as seen in cross-section.
- Heatsink top has a median lateral extent, which is the mean edge length of the main radiation side of the
- the light source comprises one or more radiation-transmissive light distributors.
- the at least one light distributor is shaped as a solid.
- the light distributor may be a light guide.
- the light distributor and / or the reflector is rotationally symmetrical. An axis of symmetry is in this case preferably parallel to the
- the reflector and / or the light distributor is then formed, for example, frustoconical.
- the scattering body is mounted completely or predominantly or at least partially in a recess of the light distributor. It is possible that the recess in the light distributor,
- both the recess and the scattering body has a
- trapezoidal basic shape or a triangular basic shape That is, in cross-section in particular perpendicular to
- an outer shape of the light distributor or an outline of the light distributor may be in the shape of a triangle or a trapezoid.
- the light distributor has curved side surfaces, for example shaped like the part of a parabola, an ellipse or a hyperbola, in the
- Light distributor seen in plan view, a mean lateral extent, the mean edge length of
- Radiation main side of the semiconductor chip by at least a factor of 10 or by at least a factor of 50 or in order
- separating gap between the light distributor and the scattering body.
- the separating gap is preferably evacuated or filled with a gas.
- An average width of the separating gap is, for example, at least 1 ⁇ m or at least 0.1 mm or
- the average width of the separating gap is at most 1.0 mm or at most 0.5 mm.
- the light distributor and the scattering body do not touch each other. It is also possible that the light distributor and the diffuser are not directly connected to each other optically. Immediately visually interconnected can mean that between the scattering body and the light distributor along the
- Main emission direction is a jump in the optical refractive index for a wavelength of the primary radiation, which does not exceed 0.1 or 0.2.
- the refractive index of the light distributor is not smaller than that of the scattering body.
- an angle between the emission main side and the light entry side is at least in places at least 15 ° or at least 20 ° or at least 25 °. Alternatively or additionally, this angle is at most 60 ° or at most 55 °.
- Diffuser body and the light entry side of the light distributor can be a polarization-selective reflection on the
- Be achieved light entry side that is, preferably different reflection coefficients for perpendicular and parallel polarized radiation from each other.
- polarization-dependent reflective coating or with a polarization-dependent reflective structuring which is for example prismatic or pyramidal provided. This is achievable that in the
- Light entrance side reflected radiation reaches back to the scattering body and is scattered at the scattering body.
- Light entrance side is then an entry of this radiation in the light distributor possible.
- a rear side of the surface light source is connected to the reflector and / or to a reflector
- Quarter wavelength plate provided.
- the quarter-wave plate is arranged to have a polarization direction of incident on this plate and on the reflector To change radiation, in particular to turn about 90 °.
- the polarization direction is rotated only approximately and with a certain width of the angular distribution by 90 °.
- the surface light source is located at a front side, the front side lying opposite a rear side and the front side facing the rear side
- the surface light source can represent a polarization-selective mirror.
- polarization-selective mirror can be achieved that only radiation of a certain polarization direction the
- the scattering body is set up for polarization-independent scattering of the primary radiation.
- a gap between the emission main side of the scattering body and the light exit side of the area light source is free from transmission to a lateral light pipe provided light guide body.
- Radiation passes through no solid in a direction parallel to the main radiation side.
- the radiation emitted from the scattering body passes through further optical components perpendicular or substantially perpendicular to the main radiation side of the semiconductor chip and / or to a main extension direction of the surface light source.
- Semiconductor chips at least 45 ° or at least 60 ° or at least 70 ° or at least 75 °. Alternatively or
- this flank angle is at most 88 ° or at most 85 ° or at most 82 °. In other words, then the emission main sides of the scattering body are almost
- this flank angle is at most 45 ° or at most 25 ° or at most 20 ° or at most 15 °.
- the side surfaces of the light distributor can thus almost parallel to the main radiation side of the Be aligned semiconductor chips and / or to the main extension direction of the surface light source.
- a thickness of the surface light source is at least 0.4 mm or at least 3 mm or at least 5 mm or at least 8 mm.
- the thickness is at most 50 mm or at most 35 mm or at most 25 mm or at most 15 mm.
- a module may include a plurality of the surface light sources, which may be laterally adjacent to each other tiled arranged.
- the surface light sources can be oriented parallel or transversely to one another.
- the area light sources may be mounted on a common carrier.
- Area light source free of a light distributor which is adapted to a lateral light pipe and which is formed of a solid, such as a plastic or a glass.
- a lateral light distribution then takes place only or substantially only over the at least one
- Forming a light distribution serving cover plate is downstream, but which is not a light guide and essentially only perpendicular to
- the scattering body is made mechanically flexible. This may mean that the scattering body is non-destructively bendable with a bending radius of 10 cm or less or 20 cm or less. As a result, an assembly of the scatterer is facilitated.
- FIGS 1 to 9 and 12 to 14 are schematic representations of
- Figures 10 and 11 are schematic representations of
- FIG. 1 shows a sectional view of an exemplary embodiment of a surface light source 1 is shown schematically.
- a heat sink top side 90 of a heat sink 9 On a heat sink top side 90 of a heat sink 9, at least one optoelectronic semiconductor chip 2, preferably a light emitting diode, is mounted.
- the semiconductor chip 2 has a main radiation side 20, which faces away from the heat sink 9 is.
- the main radiation side 20 may, in the context of
- Primary radiation P The course of the primary radiation P is indicated in the figures by an arrow line. It is
- the heat sink top 90 is designed as a reflector for the primary radiation P.
- Main emission direction x of the semiconductor chip 2 is aligned perpendicular to the radiation main side 20.
- the scattering body 3 has a
- the scattering body 3 in the form of a
- the scattering body 3 may touch the semiconductor chip 2 or, unlike the one shown, be spaced apart from the semiconductor chip 2.
- a width B of the scattering body 3 is at least 1 mm and at most 4 mm, in particular approximately 2 mm.
- a height H of the scattering body 3 is for example at least 3 mm and / or at most 10 mm, in particular about 6 mm.
- Heatsink top 90 and / or the main radiation side 20 is approximately 80 °.
- the scattering body 3 scatters the primary radiation P.
- the scattering resulting main emission y of the Diffusers 3 are substantially perpendicular to the
- emission main sides 35 are oriented and run approximately parallel to the main radiation side 20.
- the emission main sides 35 of the scattering body 3 can, due to the scattering properties of the scattering body 3 for the
- the surface light source 1 comprises a
- a material of the light distributor 4 is, for example, PMMA, polymethyl methacrylate.
- the light distributor 4 has a triangular recess 43, in one
- the scattering body 3 is located
- Light entry sides 40 of the light distributor 4 at the recess 43 may be aligned parallel to the emission main sides 35 of the scattering body 3.
- a separation gap 6, which is filled with air, for example.
- the light distributor 4 has, seen in cross section, a trapezoidal basic shape. Side surfaces 48 of the
- Light distributor 4 can, seen in cross-section, be designed as straight lines or, unlike the drawing, run curved.
- heat sink top 90 is about 12.5 °.
- the side surfaces 48 preferably reflect by means of total internal reflection.
- a thickness D of the area light source 1 is about 10 mm, for example.
- Area light source 1 lies, for example, between including 2 cm and 20 cm or between 10 cm and 15 cm inclusive.
- a front side 14 of the surface light source which also represents an emission side of the surface light source 1, is formed by a light exit side 45 of the light distributor 4.
- the light exit side 45 is substantially planar and planar.
- Conversion agent which is not shown, to be added to the conversion of the primary radiation P in another radiation.
- a conversion agent can also be located on or in the scattering body 3 or on or in the light distributor 4.
- the semiconductor chip 2 can be located in a recess of the heat sink 9.
- the scattering body 3 is then preferably with a clear adhesive, such as silicone-based, on the
- the side surfaces 48 of the light manifold 4 are provided with a reflector 8.
- the prismatic scattering body 3 is arranged downstream of three different semiconductor chips 2. For example, one of the semiconductor chips 2 emits green light, a second one
- the separation gap 6 is filled with a medium to a jump in the optical
- the separation gap 6 is evacuated or filled with a gas.
- the separating gap 6 preferably enables an effective coupling of light radiation from the scattering body 3 into guided radiation in the light distributor 4, in particular in so-called optical waveguide modes.
- Area light source 1 according to FIG. 4 the recess 43 and the scattering body 3 have a triangular basic shape. However, the light entrance sides 40 and the
- Emission main sides 35 are not parallel to each other, but have an angle ⁇ relative to each other.
- the angle ⁇ is, for example, about 30 °.
- Shape of the recess 43 can be reached that at the light entrance side 40 emitted from the diffuser 3
- the surface light source 1 according to FIG. 5 has a plurality of scattering bodies 3, which are designed as elongated prisms having a triangular cross-section. The single ones
- Diffusers 3 are arranged parallel to each other on a support 5, which can also be configured as a reflector 8 and / or as a heat sink 9. Each of the scattering body 3 is mounted over a plurality of semiconductor chips, not shown in FIG.
- FIG. 6 shows plan views of further exemplary embodiments of the surface light source 1.
- the scattering bodies 3a are oriented substantially perpendicular to the scattering bodies 3b.
- the diffusers 3a, 3b overlap
- the scattering bodies 3b are at one edge
- the scattering bodies 3a, 3b are mounted obliquely to one another, for example at an angle of approximately 45 °, not shown in FIG. 6B.
- the scattering bodies 3a, 3b can also have different lengths from each other. According to Figure 6B are boundary surfaces of
- Scattering body 3a, 3b oriented on short sides obliquely to an upper side of the carrier 5.
- Cover 7 free of a light distributor.
- the gap 13 is evacuated or, preferably, with a Gas filled like air.
- the cover 7 may optionally have structurings for a directed radiation.
- Main emission x guided by the cover 7 and thus in the cover 7 preferably only one
- the cover 7 is preferably not a light guide along the main emission direction y.
- the front side 14, which represents the emission side of the surface light source 1, is formed in particular by the cover 7.
- Such a surface light source 1 represents a so-called light box, with a direct LED backlighting.
- the cover 7 is an optically functional plate, preferably a light-shaping plate, and can for example serve to glare.
- Diffuser 3 is, for example, prism-shaped
- the area light source 1 is free from a light guide to a lateral light pipe.
- Diffuser 3 and the reflector 8 is a homogeneous
- Illumination especially the front 14 ensures.
- the surface light source 1 according to FIG. 7 can also be used in flame-critical applications, for example in aircraft.
- the surface light source 1 according to Figure 7 corresponds to the structure of a light box, so includes a housing with
- the light sources are formed by the semiconductor chips 2 in combination with the diffuser 3 and have a pronounced sideways radiation characteristic.
- a height of the light box in comparison to systems with fluorescent tubes or with light emitting diodes, which have a Lambert 'see radiation characteristic with a maximum perpendicular to the front side 14 can be reduced.
- color mixing can already take place in the scattering body due to the scattering body. Due to the shape of the side walls, so in particular of the reflector 8, and by the sideways radiation of the diffuser 3, the light in the
- the cover 7 as an optically functional plate on the front side of the
- Light box be placed. Such light boxes are often synonymous for displays or billboards to be illuminated
- the cover 7 may be realized by a frosted glass. In the illumination of more distant surfaces, so of surfaces which are spaced from the surface light source 1, can also
- Covers with wider optical functions such as lens systems such as microlenses or with prismatic lenses
- Diffuser 3 fixed to the light box, ie in particular with the reflector 8 are connected or are used modularly in the reflector. Due to a modular structure is the
- Reflectors 8 are avoidable or reducible.
- the reflector 8 preferably has a high reflectivity and can reflect specularly or diffusely, as in all other embodiments.
- the reflector can, as in all other embodiments, curved
- the shape of the reflector 8 can support a light intensity distribution of the surface light source 1.
- the heat sink 9 can be omitted if a cooling of the
- the cover 7 is molded, for example, from a plastic such as PMMA or PC, polycarbonate.
- the cover 7 is preferably provided with refractive structures to glare and / or to a shaping of the light intensity distribution. Unlike illustrated, the cover 7 can also be curved.
- Cover 7 can be optically functional layers like
- Be applied filter layers or reflective layers For example, through structuring different
- the surface light source 1 according to FIG. 8 has a planar reflector 8 on a rear side 15. On the reflector 8, a coating 85 is attached to a polarization change of radiation impinging thereon. Prefers
- Reflecting mirror can also be a diffusely scattering
- Reflector 8 find use.
- the cover 7 is designed as a polarization-selective mirror.
- a coating 75 may be applied, are adjustable over the optical properties or on the
- Electrodes such as for a liquid crystal display, are feasible.
- functional layers 75 it is possible, for example, to use optical coupling-out structures or structured, transparent conductive oxides.
- the course of the primary radiation P is illustrated by arrow lines, a polarization direction is symbolized by arrows as well as points on the illustrated course of the primary radiation P.
- the diffuser 3 emits unpolarized radiation, for example with a Lambertian radiation characteristic, symbolized by the circular stars on the emission main sides 35.
- Light distributor 4 it is optionally possible, a
- Preferential polarization of the radiation entering the light distributor 4 to achieve.
- polarization selective reflective and transmissive cover 7 meets is decoupled from the surface light source 1. Differentially polarized light is reflected toward the quarter wavelength plate 85, there in the
- Polarization rotated and subsequently emitted.
- Diffuser body 3 and / or the recess 43 may be optimized in view of a preferential polarization of light in the light distributor 4, see Figure 4.
- Components preferably have the widest possible spectral broadband characteristic.
- FIG. 9 shows further exemplary embodiments of the surface light source 1 in schematic sectional representations.
- the semiconductor chip 2 is on the carrier 5
- the semiconductor chip 2 may be provided with a conversion element.
- the main emission x is the
- the scattering body 3 it is optional and different than shown possible for the scattering body 3 to have a recess for the optical body on an underside facing the semiconductor chip 2.
- a conversion agent can also be added to the scattering body 3 or mounted on the scattering body 3, as optional in all other embodiments.
- the surface light source 1 has a lower potting laterally next to the semiconductor chip 2 and a potting along the
- the separate scattering body 3 is mounted on this plan Verguss, which projects beyond the semiconductor chip 2 in a direction away from the carrier 5.
- the semiconductor chip 2 in a Cavity of the carrier 5 may be attached. Electrical lines of the carrier 5 are each only indicated in the figures.
- the scattering body 3 is a primary optic of the semiconductor chip 2, which follows the semiconductor chip 2 optically immediately. According to FIG. 9C, there are thus no other optically active components between the semiconductor chip 2 and the scattering body 3.
- the semiconductor chip 2 is around the reflective one
- the scattering body is third
- the component is free of a scattering body.
- the optic body 77 has a central minimum and a rampart around it. Such an optical body 77 has an im
- Optic body 77 can not be achieved because the optical body 77 has no or substantially no light-scattering properties.
- Figure IIA is a
- Backlight device shown in which a light source is mounted locally on an edge of a light guide.
- a structuring 95 on a lower side serves for a light extraction.
- the light sources 2 are attached to a bottom of a light box.
- the light box has a
- FIG. 12 shows a further exemplary embodiment of the invention
- the scattered body 3 spaced apart cover each three closely arranged
- Semiconductor chips 2 completely. Each of the semiconductor chips 2 emits light in a different spectral range.
- each of the semiconductor chips 2 emits red, green and blue light.
- the scattering bodies 3 are conical
- the width B of the scattering body 3 is at least twice, three times or four times and / or at most twenty times, ten times or five times a mean edge length of the semiconductor chips 2.
- Downstream of the light distributor and the scattering bodies 3 is preferably an air gap and the recesses in the light distributor then have in particular the same basic shape as the scattering body.
- the scattering bodies 3 are trapezoidal in cross-section.
- the diffusers 3 can be rotationally symmetrical, see
- Figure 12 or have an elongated shape, see Figures 3 and 6.
- the scattering body 3 are in one
- the surface light source 1 may also comprise only one scattering body 3, just as is possible in connection with FIG. 12.
- the median lateral extent is then, for example, less than 12 cm.
- the light distributor 4 of the embodiment according to FIG. 14 has curved side surfaces 48 when viewed in cross-section. Such a light distributor 4 can also be used in all other embodiments.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112013001416.5T DE112013001416B4 (de) | 2012-03-13 | 2013-02-20 | Flächenlichtquelle |
CN201380014419.6A CN104169633B (zh) | 2012-03-13 | 2013-02-20 | 面光源 |
JP2014561346A JP5917723B2 (ja) | 2012-03-13 | 2013-02-20 | 面光源 |
US14/385,116 US9461218B2 (en) | 2012-03-13 | 2013-02-20 | Surface light source |
KR1020147028667A KR102035189B1 (ko) | 2012-03-13 | 2013-02-20 | 면광원 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012102119A DE102012102119A1 (de) | 2012-03-13 | 2012-03-13 | Flächenlichtquelle |
DE102012102119.8 | 2012-03-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013135470A1 true WO2013135470A1 (de) | 2013-09-19 |
Family
ID=47790166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/053356 WO2013135470A1 (de) | 2012-03-13 | 2013-02-20 | Flächenlichtquelle |
Country Status (6)
Country | Link |
---|---|
US (1) | US9461218B2 (de) |
JP (1) | JP5917723B2 (de) |
KR (1) | KR102035189B1 (de) |
CN (1) | CN104169633B (de) |
DE (2) | DE102012102119A1 (de) |
WO (1) | WO2013135470A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021119566A1 (en) * | 2019-12-13 | 2021-06-17 | Lumileds Llc | Segmented led arrays with diffusing elements |
US11680696B2 (en) | 2019-12-13 | 2023-06-20 | Lumileds Llc | Segmented LED arrays with diffusing elements |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2951626B1 (de) * | 2013-01-30 | 2020-12-30 | Ideal Industries Lighting Llc | Optische wellenleiter |
US20150177439A1 (en) | 2013-03-15 | 2015-06-25 | Cree, Inc. | Optical Waveguide Bodies and Luminaires Utilizing Same |
CN203478109U (zh) * | 2013-07-22 | 2014-03-12 | 欧司朗有限公司 | 用于多个光源的光学结构 |
DE102013111977A1 (de) * | 2013-10-30 | 2015-04-30 | Osram Opto Semiconductors Gmbh | Optoelektronischer Halbleiterchip und Anordnung mit mindestens einem solchen optoelektronischen Halbleiterchip |
DE102014106882A1 (de) * | 2014-05-15 | 2015-11-19 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement |
TWI550327B (zh) * | 2015-12-11 | 2016-09-21 | 友達光電股份有限公司 | 背光模組 |
DE102016101345A1 (de) * | 2016-01-26 | 2017-07-27 | Osram Gmbh | Leuchte mit pyramidenförmiger oder kegelförmiger Abdeckung |
EP3452754B1 (de) * | 2016-05-02 | 2020-06-24 | Signify Holding B.V. | Leuchtvorrichtung |
WO2018160304A1 (en) * | 2017-03-03 | 2018-09-07 | Apple Inc. | Displays with direct-lit backlight units |
US11022840B2 (en) | 2017-03-03 | 2021-06-01 | Apple Inc. | Displays with direct-lit backlight units |
CN207133458U (zh) * | 2017-09-19 | 2018-03-23 | 北京京东方显示技术有限公司 | 导光板、背光模组及显示装置 |
US11221552B2 (en) * | 2018-02-02 | 2022-01-11 | Maxell, Ltd. | Light source device, projector, and lighting device |
TWI794127B (zh) * | 2018-02-20 | 2023-02-21 | 晶元光電股份有限公司 | 發光元件及其製作方法 |
US10775669B2 (en) | 2018-03-26 | 2020-09-15 | Nichia Corporation | Light emitting module |
JP6923814B2 (ja) * | 2018-03-26 | 2021-08-25 | 日亜化学工業株式会社 | 発光モジュール |
CN109031784A (zh) * | 2018-08-23 | 2018-12-18 | 厦门天马微电子有限公司 | Led背光源及背光源模组和显示装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008083188A2 (en) * | 2006-12-29 | 2008-07-10 | 3M Innovative Properties Company | Led light source with converging extractor in an optical element |
US20090128735A1 (en) * | 2007-11-19 | 2009-05-21 | Honeywell International, Inc. | Backlight systems for liquid crystal displays |
US20100271566A1 (en) * | 2009-04-27 | 2010-10-28 | Chimei Innolux Corporation | Light emitting diode, backlight module and liquid crystal display apparatus |
US20110085110A1 (en) * | 2009-10-13 | 2011-04-14 | Chao-Ying Lin | Compound diffusion plate structure, backlight module, and liquid crystal display |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6350041B1 (en) | 1999-12-03 | 2002-02-26 | Cree Lighting Company | High output radial dispersing lamp using a solid state light source |
US20060175625A1 (en) * | 2002-05-28 | 2006-08-10 | Ryoji Yokotani | Light emitting element, lighting device and surface emission illuminating device using it |
CN100523945C (zh) * | 2002-10-04 | 2009-08-05 | 日亚化学工业株式会社 | 用于面发光装置的导光板 |
JP4397394B2 (ja) * | 2003-01-24 | 2010-01-13 | ディジタル・オプティクス・インターナショナル・コーポレイション | 高密度照明システム |
EP1640756A1 (de) * | 2004-09-27 | 2006-03-29 | Barco N.V. | Methode und System zur Beleuchtung |
KR100619069B1 (ko) * | 2005-02-16 | 2006-08-31 | 삼성전자주식회사 | 멀티칩 발광 다이오드 유닛, 이를 채용한 백라이트 유닛 및액정 표시 장치 |
KR20080077259A (ko) * | 2005-12-08 | 2008-08-21 | 더 리전츠 오브 더 유니버시티 오브 캘리포니아 | 고효율 발광 다이오드 |
WO2007146860A1 (en) | 2006-06-12 | 2007-12-21 | 3M Innovative Properties Company | Led device with re-emitting semiconductor construction and optical element |
US20070284565A1 (en) | 2006-06-12 | 2007-12-13 | 3M Innovative Properties Company | Led device with re-emitting semiconductor construction and optical element |
DE102006050880A1 (de) | 2006-06-30 | 2008-04-17 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauteil und Beleuchtungseinrichtung |
US20080101086A1 (en) * | 2006-10-26 | 2008-05-01 | K Laser Technology, Inc. | Led backlight with bare chip led |
WO2008144136A1 (en) | 2007-05-20 | 2008-11-27 | 3M Innovative Properties Company | Lamp-hiding assembly for a direct lit backlight |
JP5145957B2 (ja) | 2008-01-15 | 2013-02-20 | 凸版印刷株式会社 | 導光連結体、バックライトユニット、及び表示装置 |
JP4479805B2 (ja) | 2008-02-15 | 2010-06-09 | ソニー株式会社 | レンズ、光源ユニット、バックライト装置及び表示装置 |
US8471283B2 (en) * | 2008-02-25 | 2013-06-25 | Kabushiki Kaisha Toshiba | White LED lamp, backlight, light emitting device, display device and illumination device |
TW201007091A (en) | 2008-05-08 | 2010-02-16 | Lok F Gmbh | Lamp device |
TWI442100B (zh) * | 2009-09-18 | 2014-06-21 | 敦網光電股份有限公司 | 發光裝置及光擴散板 |
US9583678B2 (en) * | 2009-09-18 | 2017-02-28 | Soraa, Inc. | High-performance LED fabrication |
DE102010028246A1 (de) | 2010-04-27 | 2011-10-27 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement und Verfahren zum Herstellen eines optoelektronischen Bauelements |
US20110254042A1 (en) * | 2011-06-28 | 2011-10-20 | Bridgelux Inc | Elongated lenses for use in light emitting apparatuses |
-
2012
- 2012-03-13 DE DE102012102119A patent/DE102012102119A1/de not_active Withdrawn
-
2013
- 2013-02-20 DE DE112013001416.5T patent/DE112013001416B4/de active Active
- 2013-02-20 CN CN201380014419.6A patent/CN104169633B/zh active Active
- 2013-02-20 US US14/385,116 patent/US9461218B2/en active Active
- 2013-02-20 JP JP2014561346A patent/JP5917723B2/ja active Active
- 2013-02-20 WO PCT/EP2013/053356 patent/WO2013135470A1/de active Application Filing
- 2013-02-20 KR KR1020147028667A patent/KR102035189B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008083188A2 (en) * | 2006-12-29 | 2008-07-10 | 3M Innovative Properties Company | Led light source with converging extractor in an optical element |
US20090128735A1 (en) * | 2007-11-19 | 2009-05-21 | Honeywell International, Inc. | Backlight systems for liquid crystal displays |
US20100271566A1 (en) * | 2009-04-27 | 2010-10-28 | Chimei Innolux Corporation | Light emitting diode, backlight module and liquid crystal display apparatus |
US20110085110A1 (en) * | 2009-10-13 | 2011-04-14 | Chao-Ying Lin | Compound diffusion plate structure, backlight module, and liquid crystal display |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021119566A1 (en) * | 2019-12-13 | 2021-06-17 | Lumileds Llc | Segmented led arrays with diffusing elements |
US11489005B2 (en) | 2019-12-13 | 2022-11-01 | Lumileds Llc | Segmented LED arrays with diffusing elements |
US11680696B2 (en) | 2019-12-13 | 2023-06-20 | Lumileds Llc | Segmented LED arrays with diffusing elements |
Also Published As
Publication number | Publication date |
---|---|
US20150097198A1 (en) | 2015-04-09 |
CN104169633A (zh) | 2014-11-26 |
KR20140136497A (ko) | 2014-11-28 |
DE112013001416B4 (de) | 2022-01-20 |
JP5917723B2 (ja) | 2016-05-18 |
DE112013001416A5 (de) | 2014-12-04 |
CN104169633B (zh) | 2017-05-17 |
JP2015511758A (ja) | 2015-04-20 |
US9461218B2 (en) | 2016-10-04 |
DE102012102119A1 (de) | 2013-09-19 |
KR102035189B1 (ko) | 2019-11-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE112013001416B4 (de) | Flächenlichtquelle | |
DE102009017495B4 (de) | Beleuchtungseinrichtung | |
DE69921796T2 (de) | Beleuchtungsvorrichtung für nicht-emitierende anzeige | |
JP5343752B2 (ja) | 導光板、導光板の製造方法、面光源装置および液晶表示装置 | |
AT516113B1 (de) | Scheinwerfer für Kraftfahrzeuge mit Lasereinheit | |
DE102005056646A1 (de) | Licht emittierende Vorrichtung, die eine Mehrzahl von benachbarten, überlappenden Lichtleiterplatten aufweist | |
WO2014115992A1 (ko) | 양자점 복합 필름 및 이를 이용한 백라이트 유닛 | |
DE102013202334B4 (de) | Beleuchtungsvorrichtung zum Bereitstellen von Licht | |
DE112011105462B4 (de) | LED-Modul für beidseitige Beleuchtung und beidseitige LED-Beleuchtungsvorrichtung mit demselben | |
WO2004097946A2 (de) | Lichtquelle | |
DE102010007751A1 (de) | Optoelektronisches Halbleiterbauelement, Beleuchtungseinrichtung und Linse | |
EP2534003B1 (de) | Leseleuchte für kraftfahrzeuge | |
DE102016108692A1 (de) | Leuchtdiode und Leuchtmodul | |
WO2010076103A2 (de) | Beleuchtungseinrichtung | |
DE102004046256A1 (de) | Oberflächenleuchtsystem | |
KR102422135B1 (ko) | 광학 부재, 이를 포함하는 표시 장치 및 광학 부재의 제조 방법 | |
DE102011013370A1 (de) | Optoelektronisches Halbleiterbauteil | |
US20100038663A1 (en) | Led light recycling for luminance enhancement and angular narrowing | |
DE112017001296B4 (de) | Halbleiterlichtquelle | |
US20220308272A1 (en) | Light-reflecting member and light source device | |
WO2018104125A1 (de) | Optoelektronisches bauelement, modul mit mindestens zwei optoelektronischen bauelementen und verfahren zum herstellen eines optoelektronischen bauelements | |
CN110969958B (zh) | 一种led显示屏 | |
DE202005001507U1 (de) | Oberflächenleuchtsystem | |
JP2011146255A (ja) | 照明装置および表示装置 | |
WO2013135435A1 (de) | Flächenlichtquelle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13707316 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2014561346 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14385116 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120130014165 Country of ref document: DE Ref document number: 112013001416 Country of ref document: DE |
|
ENP | Entry into the national phase |
Ref document number: 20147028667 Country of ref document: KR Kind code of ref document: A |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: R225 Ref document number: 112013001416 Country of ref document: DE Effective date: 20141204 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13707316 Country of ref document: EP Kind code of ref document: A1 |