WO2014090893A1 - Optoelektronisches halbleiterbauelement und verfahren zur herstellung eines optoelektronischen halbleiterbauelements - Google Patents
Optoelektronisches halbleiterbauelement und verfahren zur herstellung eines optoelektronischen halbleiterbauelements Download PDFInfo
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- WO2014090893A1 WO2014090893A1 PCT/EP2013/076265 EP2013076265W WO2014090893A1 WO 2014090893 A1 WO2014090893 A1 WO 2014090893A1 EP 2013076265 W EP2013076265 W EP 2013076265W WO 2014090893 A1 WO2014090893 A1 WO 2014090893A1
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- WO
- WIPO (PCT)
- Prior art keywords
- wavelength conversion
- conversion element
- semiconductor chip
- plate
- semiconductor component
- Prior art date
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 154
- 230000005693 optoelectronics Effects 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 132
- 230000005855 radiation Effects 0.000 claims abstract description 37
- 230000005670 electromagnetic radiation Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 33
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- 229920002120 photoresistant polymer Polymers 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
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- 238000000465 moulding Methods 0.000 claims description 5
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- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
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- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
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- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- 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
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/505—Wavelength conversion elements characterised by the shape, e.g. plate or foil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
-
- 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
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0041—Processes relating to semiconductor body packages relating to wavelength conversion elements
-
- 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
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0058—Processes relating to semiconductor body packages relating to optical field-shaping elements
Definitions
- the semiconductor device is preferably for use in projection and / or
- the component can be used as a light source or part of a light source in a car headlight or a projection optical device.
- the component has a carrier.
- the component further has a semiconductor chip.
- the semiconductor chip is arranged on the carrier.
- the semiconductor chip is mounted on the carrier. The attachment of the semiconductor chip can
- the carrier serves for the mechanical stabilization of the
- a growth substrate for the preferably epitaxial deposition of a semiconductor layer sequence of the semiconductor chip is therefore not for stabilization
- the semiconductor chip is preferably one based on a III-V semiconductor material
- the semiconductor chip is a
- LED Light emitting diode
- Semiconductor chip preferably radiates colored light.
- the semiconductor chip can also radiate ultraviolet (UV) radiation.
- the semiconductor chip has an active zone.
- the active zone is designed to emit the electromagnetic radiation.
- the semiconductor chip preferably has two or more elements or pixels or pixels.
- the semiconductor chip is preferably a multipixel semiconductor chip.
- the active zone of the semiconductor chip preferably extends continuously over a plurality of the elements, in particular over all elements.
- the elements are
- Component can occur, identical.
- the elements are designed to generate electromagnetic
- the carrier preferably has two or more Switches, which are each provided for controlling at least one element.
- the switches are designed, for example, as a single transistor or as a circuit with a plurality of transistors and capacitors.
- the switches are provided for electrical connection with the individually controllable elements. During operation of the component, each element can be controlled by means of the associated switch. In operation, several elements can thus be simultaneously
- all elements can be controlled simultaneously. Furthermore, it is possible to independently operate different elements at different times.
- a surface of the semiconductor chip or the elements facing away from the carrier is free of
- Restricting or preventing current injection into regions of the semiconductor chips below the electrical contact point for example the formation of an electrically insulating layer, a Schottky barrier and / or an ion-implanted region below the contact point, can advantageously be dispensed with, for example. This can preferably be achieved in that both types of charge carriers of the carrier side facing the semiconductor chips or the elements are supplied.
- the device further includes
- Wavelength conversion element is the semiconductor chip in the emission direction, in particular in the form of a
- Wavelength conversion layer downstream.
- Wavelength conversion element is on the carrier
- remote surface of the semiconductor chip arranged. It can directly adjoin the semiconductor chip or it is fastened to the semiconductor chip by means of a connection means.
- the wavelength conversion element is at least for
- the wavelength conversion element is to
- the radiation emitted by the semiconductor chip or from the elements partially or completely into a further radiation with one of the emitted
- the wavelength conversion element has a structuring.
- the structuring of the wavelength conversion element is preferably designed and arranged such that a crosstalk of the radiation emitted by the various individually controllable elements of the semiconductor chip
- the wavelength conversion element has, in particular, a structuring into subregions.
- that Wavelength conversion element is designed so that it is subdivided into subregions. The subdivision into
- partial regions represent a lateral subdivision or a subdivision in the lateral direction of the wavelength conversion element.
- “Lateral direction” in this context means a direction parallel to the main extension direction of the component. "Vertical
- Main extension direction of the device so for example, the direction along which the thickness of the device
- Component is determined.
- Each subregion of the wavelength conversion element is at least one individually controllable element of the
- a number of partial areas preferably corresponds to a number of individually controllable elements of the semiconductor chip.
- the assignment of the subregions to the elements is particularly unambiguous. In other words, each subarea is assigned in the case of a one-to-one assignment exactly one individually controllable element and / or vice versa.
- the risk of optical crosstalk between adjacent elements in the operation of the device can be reduced. That is, every element stimulates within the framework of
- Wavelength conversion element are hardly or not pumped by primary radiation of the not directly associated element. A required contrast ratio and a sharp optical separation between the individual elements are thus guaranteed. The clear separation between the individual elements are projected differently
- Illuminated patterns on the evaluation plane (for example on a street) better contoured and distinguishable
- an improved color-angle characteristic of the component can be ensured by the structuring. Due to the improved color-angle characteristic, there is no or at least significant changeover between different projected illumination patterns
- the wavelength conversion element is formed in one piece. In other words, that structured
- Wavelength conversion element has contiguous
- the device is particularly simple.
- the wavelength conversion element consists of a ceramic.
- the wavelength conversion element a cerium-doped yttrium aluminum garnet, short YAG, and / or a Luthetiumaluminiumgranat, short LuAG, and / or a
- Luthetiumyttriumaluminiumgranat short LuYAG have or consist of such. Likewise, that can
- Wavelength conversion element comprising a doped silicon nitride or silicon oxynitride or silicate or aluminate.
- the wavelength conversion element contains an Eu 2+ doped alkaline earth silicon nitride and / or a
- alkaline earth metal is barium or calcium or strontium. These materials are characterized by their high stability. Furthermore, a ceramic is characterized by its high thermal conductivity. This has a particularly advantageous effect on the thermal management of the semiconductor chip. Furthermore, the
- Wavelength conversion element also a corresponding
- the wavelength conversion element may also comprise a phosphor in a matrix material.
- Matrix material may be, for example, a plastic, a glass or a ceramic.
- the phosphor may be in the form of particles in the matrix material, for example.
- Phosphorus can be a ceramic one
- Phosphor and / or an organic phosphor act.
- the wavelength conversion element has one or more trenches, for example three or four trenches.
- the respective trench is preferably on a semiconductor chip
- the respective trench may also be formed on a surface of the wavelength conversion element facing the semiconductor chip.
- the respective trench presents a recess or opening on the surface of the respective trench
- the trench extends in this case preferably from the opening on the surface of the wavelength conversion element into the
- the wavelength conversion element preferably has a height or vertical extent of greater than or equal to 1 ⁇ m, for example 10 ⁇ m, and less than or equal to 300 ⁇ m, for example 100 ⁇ m.
- the respective trench has such a depth or vertical extent that it penetrates the wavelength conversion element to 80% or less, for example to 70% or 60%.
- a vertical extent is, for example, an extension perpendicular to a main plane of extension of the
- a "vertical" direction may be a direction toward or away from the carrier, and the respective trench further has a depth such that it penetrates the wavelength conversion element by at least 20%, for example, 25% or 30%
- the trench preferably has a depth or vertical extent between at least 0.2 ym and at most 240 ym, for example 80 ym, depending on the vertical extent of the
- the wavelength conversion element has a width
- the subregions of the wavelength conversion element each have a width greater than or equal to 2 ym, for example 10 ym, and less than or equal to 500 ym, for example 100 ym, on.
- the respective trench has a width or lateral extent of less than or equal to 20 ⁇ m, for example 10 ⁇ m or 1 ⁇ m. In other words, the lateral extent of the respective trench is small
- Wavelength conversion element The width of the respective trench is defined, for example, at the widest point of the trench.
- the trenches are adapted to the subregions of the
- Wavelength conversion element of each other at least
- the trenches are partly to separate.
- the trenches are partly to separate.
- Subareas preferably an equal size or spatial extent.
- the trenches can have different profiles.
- the trenches may be V-shaped. But even a rectangular or round shape of the trenches is conceivable. In particular, any trench shape is conceivable which is suitable for structuring the
- the respective trench has two opposite one another
- flanks on.
- the flanks form the inner surface of the respective trench and extend, for example, transversely to the main extension plane of the trench
- the flanks are coated with a non-transparent material.
- the flanks are coated with a mirror material,
- the non-transparent material can also be a diffuse scatterer or a diffused scattering material in one
- the non-transparent material may also be such
- the non-transparent material may be formed totally reflective.
- the non-transparent material advantageously contributes to preventing the crosstalk of the radiation emitted by two adjacent elements of the semiconductor chip. This can be done for example by the reflection of primary radiation and / or secondary radiation by the non-transparent
- the respective trench is filled up.
- the trench is completely filled up.
- the trench is filled up in such a way that a side facing away from the semiconductor chip
- the ditch is filled with a filling material.
- the trench may be filled by the non-transparent material described above.
- the non-transparent material forms the filling material.
- any other material that is suitable for filling the trenches can also serve as backfill material.
- the backfill material has a thermal
- Expansion coefficient of the wavelength conversion element is adjusted.
- the backfill material may be applied to the above-described layer of non-transparent material.
- the non-transparent material directly adjoins the backfill material.
- the trench may also be filled with the filling material without the application of non-transparent material to the flanks. In this case, the material of the
- Wavelength conversion element directly to the backfill material.
- the semiconductor chip facing away from the surface of the trench closes by filling flush with the
- Wavelength conversion element the surface of the semiconductor chip facing away from the
- Wavelength conversion element flat or flat This facilitates a further system structure or the connection of the component with micro-optical elements, for example a lens, for shaping the spatial
- the trench may be filled with a glass.
- the wavelength conversion element is in a plurality of
- Microlenses for example two, three or four microlenses, structured.
- the respective microlens is convex
- microlenses are preferably at least partially separated from one another by the trenches described above.
- Each of the microlenses is
- Wavelength conversion element an improved color-over-angle characteristic of the radiated radiation can be obtained.
- the device is for use in projection and / or headlight applications, for example in an adaptive car headlight,
- the component can also be used for
- Semiconductor chip can have a power consumption of at least 0.5 W, in particular at least 3 W.
- the component has a carrier. All the features associated with the carrier of the above
- the component further has a semiconductor chip.
- the semiconductor chip is arranged on the carrier.
- Semiconductor chip is preferably a based on a III-V semiconductor material semiconductor chip, preferably an LED chip.
- the semiconductor chip is used for the emission of electromagnetic radiation, preferably of light.
- the semiconductor chip preferably radiates colored light.
- the semiconductor chip can also radiate UV radiation, for example.
- the semiconductor chip has at least one individually controllable element.
- the individually controllable element is for
- Component can also have a plurality of individually controllable elements, for example, two, three, four or more individually controllable elements.
- the semiconductor chip may be a multi-pixel semiconductor chip.
- the component has a wavelength conversion element.
- the wavelength conversion element is the semiconductor chip in Downstream of the radiation direction.
- Wavelength conversion element is designed and arranged to at least partially convert the primary radiation emitted by the semiconductor chip or the individually controllable element into an electromagnetic secondary radiation.
- the wavelength conversion element is
- the wavelength conversion element may consist of a ceramic.
- the wavelength conversion element may comprise a phosphor in a matrix material, for example glass, plastic or ceramic.
- an optoelectronic semiconductor component preferably an optoelectronic semiconductor component described here.
- the semiconductor component produced thereby preferably corresponds to the semiconductor component described in the first aspect. All disclosed for this semiconductor device
- the method comprises the following steps:
- the carrier described above is provided.
- the carrier is used for mechanical
- the carrier may have a plurality of switches.
- the number of switches preferably corresponds to the number of individually controllable elements of the semiconductor chip.
- the semiconductor chip has two or more individually controllable elements. Of the Semiconductor chip is preferably a multipixel semiconductor chip.
- the semiconductor chip is arranged on the carrier. Furthermore, the semiconductor chip is electrically connected to the switches arranged in the carrier.
- the plate is integrally formed. In particular, the plate does not consist of several parts.
- the plate is flat.
- the plate is
- the plate has to this
- the plate is preferably made of a ceramic, for example LuAG or YAG.
- the plate can also be made from a
- Plastic for example silicone, PC or acrylate
- the plate is structured to form the above-described
- the wavelength conversion element has a structuring into partial areas.
- the number of subregions of the wavelength conversion element corresponds to the number of individually controllable elements. That by the
- Structuring obtained wavelength conversion element is integral. In other words, there is no separation of the plate by the structuring into the subregions.
- Wavelength conversion element is associated with an individually controllable element of the semiconductor chip. In particular preferably in each case a partial area arranged vertically above an individually controllable element. Alternatively, however, the wavelength conversion element can also first be mounted on the semiconductor chip and then patterned as described above.
- the structuring of the wavelength conversion element reduces the risk of optical crosstalk between adjacent elements of the semiconductor chip.
- the structuring also achieves an improved color-angle characteristic of the component.
- the plate has a ceramic.
- the plate is preferably in a
- Green body state structured that is before burning the plate. The structuring of the plate takes place
- an injection molding (Molden) of the slurry can be carried out while the desired trench shape can be achieved (simple molding, compression molding
- the liquid converter composition is introduced into an appropriate casting mold (slip casting). Of the thus resulting casting corresponds to the above-mentioned green body.
- the plate is baked for the eventual production of the
- the plate has a ceramic.
- the plate is preferably in a
- Green body condition structured The structuring takes place by melting the slurry into a microlens form.
- the molding process preferably produces a plate having a plurality of microlenses.
- the plate is baked for the eventual production of the wavelength conversion element.
- the plate has a ceramic. The structuring of the plate takes place in
- a baked ceramic plate is provided.
- the first embodiment a baked ceramic plate is provided.
- cylindrical photoresist islands are defined on the plate. This is preferably done by photolithography. The plate with the photoresist islands is placed in an oven
- the photoresist microlenses are transferred to the plate. This is preferably done by means of reactive ion etching. Alternatively, the microlens structuring of
- FIG. 1 shows a cross section of a
- FIG. 2A shows a cross section of a
- FIG. 2B shows a cross section of a
- the figure 3 shows a cross section of a
- FIG. 1 shows an optoelectronic semiconductor component 1 which has a semiconductor chip 3.
- the semiconductor chip 3 radiates visible radiation or light.
- the semiconductor chip 3 is preferably an LED chip.
- the semiconductor chip 3 may also emit non-visible radiation, for example UV radiation.
- the semiconductor chip 3 has individually controllable elements 4 or pixels or pixels.
- the elements 4 emit electromagnetic radiation, preferably light.
- the display device 1 further comprises a carrier 2.
- the semiconductor chip 3 is arranged on the carrier 2 and fixed on it.
- the carrier 2 is preferably a plurality of switches for electrical control of the elements 4 integrated (not explicitly shown).
- the switches are designed, for example, as a single transistor or as a circuit with a plurality of transistors and capacitors.
- the switches are provided for electrical connection with the individually controllable elements 4.
- the carrier 2 may be formed, for example, as a silicon carrier, in which the switches may be configured in CMOS (Complementary Metal Oxide Semiconductor) technology.
- CMOS Complementary Metal Oxide Semiconductor
- Semiconductor chips 3 serves as the carrier 2 of the mechanical
- the component 1 has a wavelength conversion element 5.
- the wavelength conversion element 5 is integrally formed. In other words that's it
- Wavelength conversion element 5 not several
- Assembled individual parts but for example, formed from a plate of converter material.
- the wavelength conversion element 5 contains, for example, particles of a phosphor (for example phosphorus) in a matrix made of a plastic, for example PC, acrylate,
- Epoxy or silicone material or glass or ceramic.
- Wavelength conversion element 5 also consist of a ceramic (for example, YAG or LuAG).
- Wavelength conversion element 5 has a height
- the wavelength conversion element 5 is arranged downstream of the semiconductor chip 3 in the emission direction.
- Wavelength conversion element 5 converts at least partially the primary radiation emitted by the semiconductor chip 3 or by the elements 4 into an electromagnetic one
- the wavelength conversion element 5 is structured.
- the wavelength conversion element 5 is the wavelength conversion element 5
- Subareas 5A to 5D on. Each element 4 is assigned to one of the subregions 5A to 5D. The number of
- Subareas 5A to 5D corresponds to this
- the number of partial areas 5A to 5D may be smaller than the number of elements 4.
- the partial areas 5A to 5D have the same shape.
- the subregions 5A to 5D have in particular the same horizontal and vertical extent.
- the partial regions (5A, 5B, 5C, 5D) have a width or horizontal or lateral extent of greater than or equal to 3 ⁇ m and less than or equal to 200 ⁇ m, for example 100 ⁇ m.
- the wavelength conversion element 5 has trenches 6, which are formed on a surface of the wavelength conversion element 5 facing away from the semiconductor chip 3.
- the trenches 6 each have two oppositely arranged flanks 6A, 6B.
- the trenches 6 provide bulges respectively
- the trenches 6 are formed in this embodiment, V-shaped.
- the trenches 6 can also have any other shape.
- the trenches 6 may be rectangular or round.
- the trenches 6 each have the same shape and the same spatial extent.
- the trenches 6 do not completely penetrate the wavelength conversion element 5.
- the trenches 6 penetrate the wavelength conversion element 5 to a maximum of 80%
- the trenches 6 penetrate the wavelength conversion element 5 to at least 20%, for example to 30% or 40%. In particular, the trenches 6 cause no separation of the
- Wavelength conversion element 5 in individual parts, but only the structuring into the individual areas 5A to 5D.
- FIG. 2A shows a cross section of a component 1 according to a second exemplary embodiment.
- the component 1 shown here differs from the component 1 from FIG. 1 in that the flanks 6A, 6B the trenches 6 are coated with a non-transparent material 7.
- the non-transparent material 7 is, for example, a mirror layer.
- the trenches 6 can be complete in particular
- the trenches 6 are embedded with a filling material 8, for example glass or a diffuse scattering material embedded in a transparent matrix material,
- the transparent material 7 can be dispensed with. This will, for example, an improved
- the filling material 8 directly adjoins the non-transparent material 7.
- the surface of the wavelength conversion element 5, which faces away from the semiconductor chip 3 is flat. In particular, the surface no longer has indentations. This facilitates a further system structure or the connection of the
- Wavelength conversion element 5 with other elements, for example a lens (not explicitly shown).
- FIG. 2B shows a cross-section of a component 1 according to a further exemplary embodiment.
- the component 1 shown here differs from the component 1 from FIG. 2A in that the trenches 6 adjoin the surface of the semiconductor chip 3 facing the semiconductor chip 3
- Wavelength conversion element 5 are formed.
- the wavelength conversion element 5 is structured in the subregions (5A, 5B, 5C, 5D) and is arranged such that the trenches 6 face the semiconductor chips 3. This can be achieved, for example, by first patterning the wavelength conversion element 5 and then placing it on the semiconductor chip 3. It is possible that the trenches 6 are completely filled. In particular, each trench 6 is filled up such that a surface of the material facing the semiconductor chip in the trench terminates flush with the surface of the wavelength conversion element facing the semiconductor chip.
- FIG. 3 shows a cross-section of a component 1 according to a further exemplary embodiment.
- the component 1 shown here differs from the component 1 from FIG. 1 in that the partial regions 5A to 5D are convex.
- the partial regions 5A to 5D are convex.
- Subareas 5A to 5D are formed as convex microlenses 9.
- the microlenses 9 are separated from each other by the trenches 6
- trenches 6 are rounded.
- the trenches 6 formed between the microlenses 9 may also be V-shaped or rectangular.
- the trenches 6 have a smaller depth in this exemplary embodiment than in that shown in FIG.
- the trenches 6 penetrate the wavelength conversion element 5 in this specification.
- the trenches 6 can also be formed deeper in this wavelength conversion element 5 and the Wavelength conversion element 5, for example, to 70% or 80% penetrate.
- the carrier 2 described above is provided.
- the semiconductor chip 3 is placed on the carrier 2 and fixed thereon, for example, soldered.
- Converter material for example a ceramic
- the plate is integrally formed. In a further step, the plate is patterned to form the wavelength conversion element 5.
- Structuring in this context means that there is no separation of the plate into individual parts. Rather, the plate is in one or more sections 5A to 5D
- Wavelength conversion element 5 the plate is structured such that the thus obtained
- Wavelength conversion element 5 has a structuring in the subregions 5A to 5D, wherein each subregion 5A to 5B of the wavelength conversion element 5 in the further process, a individually controllable element 4 of
- Wavelength conversion element 5 the plate in this case, for example, in a green state state, that is before the Burn the plate, be textured.
- the structuring of the plate takes place by the formation of the trenches 6 shown in FIGS. 1 and 2 in the plate.
- the formation of the trenches 6 can take place, for example, by embossing into the green sheet.
- an injection molding of the slurry can be carried out, and thereby the trenches 6 are formed.
- the liquid converter mass for the plate is introduced into a corresponding mold, whereby the trenches 6 are formed in the desired shape and local extent.
- the plate is then baked. Thereafter, in an optional step, the flanks 6A and 6B can be coated with the non-transparent material 7 and the trenches 6 filled up (see FIG. 2).
- Wavelength conversion element 5 the plate can be structured in a green state state.
- the structuring takes place by Molden of the slip in the multiplicity of
- Wavelength conversion element 5 correspond.
- the plate is then baked for the final production of the
- Wavelength conversion element 5 For the production of the shown in Figure 3
- Wavelength conversion element 5 the plate but also in the baked state, so not in the green state state, are structured.
- cylindrical ones are used Photoresist islands defined on the plate, preferably by photolithography.
- the plate with the photoresist islands is then placed in an oven and heated to the
- microlenses 9 from the photoresist islands. Thereafter, the photoresist microlenses are transferred to the plate. This is preferably done by means of reactive ion etching.
- FIGS. 1 to 3 this is arranged on the semiconductor chip 3. The arrangement is carried out such that
- each individually controllable element 4 a preferably each individually controllable element 4 a
- Part 5A to 5D is assigned.
- the structuring of the plate can also take place after arranging the plate on the semiconductor chip 3.
- Wavelength conversion element 5 optical elements are arranged downstream.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112013005934.7T DE112013005934B4 (de) | 2012-12-12 | 2013-12-11 | Optoelektronisches Halbleiterbauelement und Verfahren zur Herstellung eines optoelektronischen Halbleiterbauelements |
US14/650,545 US9614131B2 (en) | 2012-12-12 | 2013-12-11 | Optoelectronic semiconductor component and method for producing an optoelectronic semiconductor component |
US15/473,918 US10236426B2 (en) | 2012-12-12 | 2017-03-30 | Optoelectronic semiconductor component and method for producing an optoelectronic semiconductor component |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012112149.4A DE102012112149A1 (de) | 2012-12-12 | 2012-12-12 | Optoelektronisches Halbleiterbauelement und Verfahren zur Herstellung eines optoelektronischen Halbleiterbauelements |
DE102012112149.4 | 2012-12-12 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US14/650,545 A-371-Of-International US9614131B2 (en) | 2012-12-12 | 2013-12-11 | Optoelectronic semiconductor component and method for producing an optoelectronic semiconductor component |
US15/473,918 Continuation US10236426B2 (en) | 2012-12-12 | 2017-03-30 | Optoelectronic semiconductor component and method for producing an optoelectronic semiconductor component |
Publications (1)
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WO2014090893A1 true WO2014090893A1 (de) | 2014-06-19 |
Family
ID=49816913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2013/076265 WO2014090893A1 (de) | 2012-12-12 | 2013-12-11 | Optoelektronisches halbleiterbauelement und verfahren zur herstellung eines optoelektronischen halbleiterbauelements |
Country Status (3)
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US (2) | US9614131B2 (de) |
DE (2) | DE102012112149A1 (de) |
WO (1) | WO2014090893A1 (de) |
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WO2016087600A1 (en) * | 2014-12-04 | 2016-06-09 | Osram Sylvania Inc. | Method for producing a ceramic conversion element, ceramic conversion element and optoelectronic device |
DE102017114011A1 (de) * | 2017-06-22 | 2018-12-27 | Osram Opto Semiconductors Gmbh | Optoelektronisches bauelement |
EP4053898A1 (de) * | 2021-03-05 | 2022-09-07 | Lumens Co., Ltd. | Mikro-led-tafel und verfahren zur herstellung davon |
US11545808B2 (en) | 2019-08-09 | 2023-01-03 | Schott Ag | Light conversion devices and methods for producing |
EP4063719A4 (de) * | 2019-12-23 | 2023-08-09 | Seoul Semiconductor Co., Ltd. | Scheinwerfervorrichtung |
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US11160148B2 (en) * | 2017-06-13 | 2021-10-26 | Ideal Industries Lighting Llc | Adaptive area lamp |
US11792898B2 (en) | 2012-07-01 | 2023-10-17 | Ideal Industries Lighting Llc | Enhanced fixtures for area lighting |
DE102012112149A1 (de) * | 2012-12-12 | 2014-06-26 | Osram Opto Semiconductors Gmbh | Optoelektronisches Halbleiterbauelement und Verfahren zur Herstellung eines optoelektronischen Halbleiterbauelements |
DE102015103055A1 (de) | 2014-12-04 | 2016-06-09 | Osram Opto Semiconductors Gmbh | Optoelektronisches Halbleiterbauteil und Verfahren zur Herstellung eines optoelektronischen Halbleiterbauteils |
DE102015104220A1 (de) * | 2015-03-20 | 2016-09-22 | Osram Opto Semiconductors Gmbh | Optoelektronische Leuchtvorrichtung |
US10529696B2 (en) | 2016-04-12 | 2020-01-07 | Cree, Inc. | High density pixelated LED and devices and methods thereof |
JP6692682B2 (ja) * | 2016-04-21 | 2020-05-13 | スタンレー電気株式会社 | 面発光レーザ装置及びその製造方法 |
US10222681B2 (en) * | 2016-11-07 | 2019-03-05 | Limileds LLC | Segmented light or optical power emitting device with fully converting wavelength converting material and methods of operation |
US10651357B2 (en) | 2017-08-03 | 2020-05-12 | Cree, Inc. | High density pixelated-led chips and chip array devices |
US10734363B2 (en) | 2017-08-03 | 2020-08-04 | Cree, Inc. | High density pixelated-LED chips and chip array devices |
US11054112B2 (en) * | 2017-12-22 | 2021-07-06 | Lumileds Llc | Ceramic phosphor with lateral light barriers |
US10529773B2 (en) | 2018-02-14 | 2020-01-07 | Cree, Inc. | Solid state lighting devices with opposing emission directions |
DE102018117591A1 (de) | 2018-07-20 | 2020-01-23 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement und Anzeigevorrichtung |
US10903265B2 (en) | 2018-12-21 | 2021-01-26 | Cree, Inc. | Pixelated-LED chips and chip array devices, and fabrication methods |
WO2021087109A1 (en) | 2019-10-29 | 2021-05-06 | Cree, Inc. | Texturing for high density pixelated-led chips |
US11437548B2 (en) | 2020-10-23 | 2022-09-06 | Creeled, Inc. | Pixelated-LED chips with inter-pixel underfill materials, and fabrication methods |
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Also Published As
Publication number | Publication date |
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DE112013005934A8 (de) | 2016-05-04 |
US10236426B2 (en) | 2019-03-19 |
US20150311407A1 (en) | 2015-10-29 |
DE102012112149A1 (de) | 2014-06-26 |
US9614131B2 (en) | 2017-04-04 |
DE112013005934B4 (de) | 2022-02-03 |
DE102012112149A8 (de) | 2014-09-04 |
US20170207373A1 (en) | 2017-07-20 |
DE112013005934A5 (de) | 2015-09-10 |
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