WO2023006462A1 - Optoelektronisches bauelement - Google Patents
Optoelektronisches bauelement Download PDFInfo
- Publication number
- WO2023006462A1 WO2023006462A1 PCT/EP2022/069979 EP2022069979W WO2023006462A1 WO 2023006462 A1 WO2023006462 A1 WO 2023006462A1 EP 2022069979 W EP2022069979 W EP 2022069979W WO 2023006462 A1 WO2023006462 A1 WO 2023006462A1
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- WIPO (PCT)
- Prior art keywords
- optoelectronic component
- optoelectronic
- carrier
- semiconductor chip
- electrically conductive
- Prior art date
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- 230000005693 optoelectronics Effects 0.000 title claims abstract description 253
- 239000004065 semiconductor Substances 0.000 claims abstract description 80
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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
- H01L33/58—Optical field-shaping elements
-
- 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
- H01L33/52—Encapsulations
-
- 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
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
Definitions
- the present invention relates to an optoelectronic component.
- Optoelectronic components are known events in various On and are used for various purposes. For example, it is known to use light-emitting optoelectronic components as headlights in motor vehicles.
- One object of the present invention is to provide an optoelectronic component. This object is achieved by an optoelectronic component having the features of the independent claim. Various developments are specified in the dependent claims.
- An optoelectronic component includes a carrier, an optoelectronic semiconductor chip and a metallic diaphragm de.
- the optoelectronic semiconductor chip has a top side with a light-emitting area.
- the optoelectronic semiconductor chip is arranged on a top side of the carrier in such a way that the light-emitting surface faces away from the top side of the carrier.
- the aperture is arranged over the top of the carrier and the optoelectronic semiconductor chip.
- the bezel has an opening located over the light emitting surface.
- the screen arranged over the top side of the carrier and the optoelectronic semiconductor chip prevents light from striking the optoelectronic component from the outside, for example Sunlight, sensitive, for example, temperature sensitive, components of the optoelectronic device hits.
- Light striking the aperture of the optoelectronic component can be absorbed or reflected by the aperture. This advantageously reduces the risk of the optoelectronic component being damaged by impinging light.
- a housing body is arranged on the upper side of the carrier.
- the optoelectronic semiconductor chip is arranged in a cavity of the housing body.
- the housing body can have a plastic material, for example.
- the housing body is advantageously protected by the cover from light striking the optoelectronic component from the outside.
- the panel is fastened to an upper side of the housing body.
- the bezel can be attached to the top of the housing body by means of an adhesive. This enables the optoelectronic component to be produced simply and inexpensively.
- the screen has a light-absorbing coating.
- the light-absorbing coating advantageously prevents light reflected at the diaphragm from striking other components in the vicinity of the optoelectronic component and having a damaging effect there.
- light absorption on the underside and on side surfaces of the panel in the vicinity of the aperture of the panel may be desirable, in order to reduce scattered light there. Heat generated in the panel can be effectively dissipated through the metallic panel.
- the screen has a connecting element that is electrically is conductively in contact with an electrical contact at the top of the carrier.
- the electrical contact can provide a reference potential, for example a ground potential.
- the diaphragm of the optoelectronic component is advantageously at the reference potential when the optoelectronic component is in operation, thereby providing electromagnetic shielding. This can improve the EMC and ESD properties of the optoelectronic component.
- the screen has a connecting element, which forms a soldering surface that is accessible on an underside of the optoelectronic component.
- the diaphragm element can be connected to a ground potential or another reference potential via the soldering surface and the connection element, thereby causing electromagnetic shielding. This too can improve the EMC and ESD properties of the optoelectronic component.
- the connecting element is formed by a section of the screen that is bent over relative to a surrounding area of the screen.
- this allows a particularly simple and cost-effective production of the panel and light enables easy assembly of the panel.
- the connecting element is attached to the panel.
- the screen can thereby be formed without openings in the area of the connecting element, as a result of which the screen can bring about particularly complete shielding against light impinging from the outside.
- the screen has a side wall that laterally encloses an area between the carrier and the screen.
- the panel can advantageously have a special complete electromagnetic and electrostatic shielding of the components of the optoelectronic component.
- the side wall is in electrically conductive contact with an electrical contact on the top side of the carrier.
- the electrical contact can provide a reference potential, for example a ground potential.
- the diaphragm of the optoelectronic component is advantageously at the reference potential when the optoelectronic component is in operation and can thereby cause electromagnetic shielding. This can improve the EMC properties of the optoelectronic component.
- the side wall encloses the carrier laterally.
- the panel forms a cap that completely covers the remaining components of the optoelectronic component.
- particularly effective shielding of the components of the optoelectronic component can be achieved.
- a section of the side wall forms a soldering surface that is accessible on a bottom side of the optoelectronic component.
- the diaphragm can be connected to a ground potential or another reference potential when the optoelectronic component is in operation, and thereby bring about effective electromagnetic shielding of the optoelectronic component. This can improve the EMC properties of the optoelectronic component.
- an edge region delimiting the opening of the diaphragm is bent in the direction of the top side of the carrier.
- this makes it possible to form the opening of the screen with a particularly small opening area without the screen emitting from the optoelectronic semiconductor chip shields electromagnetic radiation.
- a small aperture opening is associated with a particularly effective protection of the optoelectronic component from light striking it from outside.
- a dam delimiting the light-emitting surface is arranged on the upper side of the optoelectronic semiconductor chip.
- the dam can, for example, also cover bonding wires connected to the optoelectronic semiconductor chip.
- the dam can serve to protect the light-emitting surface of the optoelectronic semiconductor chip.
- a potting material is arranged in the cavity of the housing body.
- the optoelectronic semiconductor chip is at least partially embedded in the potting material.
- the casting material can serve to protect the optoelectronic semiconductor chip and to protect bond wires connected to the optoelectronic semiconductor chip.
- an electrically conductive layer is arranged on the light-emitting surface, which is electrically conductively connected to the diaphragm.
- the electrically conductive layer can be at the same potential as the diaphragm during operation of the optoelectronic component, in particular, for example, at a ground potential.
- electromagnetic shielding achieved by the diaphragm is also completed over the area of the opening of the diaphragm.
- the electrically conductive layer has a wavelength-converting material.
- the electrically conductive layer can advantageously additionally convert electromagnetic radiation emitted by the optoelectronic semiconductor chip at least partially into electromagnetic radiation of a different wavelength.
- the electrically conductive layer is in direct contact with an electrical contact area of the optoelectronic semiconductor chip or with a bonding wire connected to the optoelectronic semiconductor chip.
- the electrically conductive layer and thus also the screen can be connected to a fixed potential, in particular, for example, to a ground potential.
- the electrically conductive layer extends onto an upper side of the diaphragm facing away from the carrier.
- this represents a simple way of electrically conductively connecting the electrically conductive layer to the panel.
- the diaphragm has a laser marking.
- the laser marking can serve, for example, to identify the optoelectronic component or to identify an orientation of the optoelectronic component.
- Fig. 3 is a top view of a variant of an optoelectronic African component; 4 shows a plan view of a further variant of an optoelectronic component;
- FIG. 15 another variant of an optoelectronic construction elements.
- 1 shows a schematic, sectional side view of an optoelectronic component 100.
- the optoelectronic component 100 can be embodied, for example, as a multi-pixel light source and can be provided for use in a headlight of a motor vehicle.
- the optoelectronic component 100 has an upper side 101 and an underside 102 opposite the upper side 101 .
- electromagnetic radiation is emitted at the top side 101 of the optoelectronic component 100 .
- the underside 102 is provided as a mounting surface and for making electrical contact with the optoelectronic component 100 .
- the optoelectronic component 100 includes a carrier 200.
- the carrier 200 can also be referred to as a substrate.
- the carrier 200 can be formed, for example, as a single or multi-layer printed circuit board (PCB, MCB), as a ceramic carrier or as a plastic carrier with an embedded lead frame.
- the carrier 200 has an upper side 201 and an underside 202 opposite the upper side 201 .
- the underside 202 of the carrier 200 forms the underside 102 of the optoelectronic component 100.
- a metallization at the upper side 210 with upper contact surfaces 211 On the upper side 201 of the carrier 200 there is a metallization at the upper side 210 with upper contact surfaces 211 .
- a Unterpipemetall lization 220 with lower contact surfaces 221 is arranged on the underside 202 of the carrier 200 .
- the lower contact areas 221 are provided for making electrical contact with the optoelectronic component 100 .
- Sections of the top side metallization 210 and sections of the bottom side metallization 220 are electrically conductively connected to one another via through contacts 230 extending through the carrier 200 .
- a housing body 300 having a top 301 and a top 301 ge opposite underside 302 is arranged.
- the housing body 300 on the top 201 of the carrier 200 is arranged that the bottom 302 of the housing body 300 of the top 201 of the carrier 200 faces.
- the housing body 300 has an electrically insulating material, for example a plastic material.
- the housing body 300 may have been arranged on the upper side 201 of the carrier 200 by means of a molding process, for example. However, the housing body 300 can also be pre-produced, for example, and glued to the top side 201 of the carrier 200 .
- the housing body 300 could also be formed integrally with the carrier 200 .
- the package body 300 has a chip cavity 310 .
- the chip cavity 310 forms an opening in the housing body 300, so that the top 201 of the carrier 200 in the region of the chip cavity 310 is exposed.
- Upper contact areas 211 of the upper side metallization 210 of the carrier 200 are also accessible in the area of the chip cavity 310 .
- An optoelectronic semiconductor chip 400 is in the chip cavity 310 of the housing body 300 on the top 201 of the carrier 200 is arranged.
- the optoelectronic semiconductor chip 400 has an upper side 401 and an underside 402 lying opposite the upper side 401 .
- a light-emitting area 410 of the optoelectronic semiconductor chip 400 is formed on the upper side 401 of the optoelectronic semiconductor chip 400 .
- the optoelectronic semiconductor chip 400 is arranged on the top side 201 of the carrier 200 in such a way that the light-emitting surface 410 faces away from the top side 201 of the carrier 200 .
- the optoelectronic semiconductor chip 400 can be embodied as a multi-pixel chip, for example.
- the light-emitting surface 410 has a plurality of individually controllable picture elements (pixels).
- the light-emitting surface 410 can also be formed as a uniform surface without a subdivision.
- the optoelectronic semiconductor Chip 400 can also be designed as a system-on-a-chip (SoC) with integrated driver components.
- SoC system-on-a-chip
- the optoelectronic semiconductor chip 400 can be embodied, for example, as a driver chip with an LED array arranged thereon.
- the optoelectronic semiconductor chip 400 has electrical contact areas 420 on its upper side 401 .
- the electrical contact surfaces 420 are electrically conductively connected to upper contact surfaces 211 on the upper side 201 of the carrier 200 via bonding wires 425 .
- the optoelectronic semiconductor chip 400 is electrically contacted.
- the optoelectronic semiconductor chip 400 could also have one or more electrical contact surfaces on its underside 402, which are electrically conductively connected to one or more of the upper contact surfaces 211 of the carrier 200, for example by means of a soldered or adhesive connection.
- African African African a metallic panel 500 is arranged at the top 301 of the housing body 300 of the optoelectronic component 100 .
- the panel 500 is thus also arranged over the top 201 of the carrier 200 and over the optoelectronic semiconductor chip 400 .
- the screen 500 has an upper side 501 and an underside 502 opposite the upper side 501 .
- the bottom 502 of the panel 500 faces the top 301 of the housing body 300 , the top 201 of the carrier 200 and the top 401 of the optoelectronic semiconductor chip 400 .
- the top 501 of the aperture 500 forms the upper side 101 of the optoelectronic component 100. It is expedient that the aperture 500 is attached to the top 301 of the housing body 300 Ge. For example, the aperture 500 can be glued to the top 301 of the housing body 300 .
- the bezel 500 includes a metallic material. It is expedient to select this material in such a way that its coefficient of thermal expansion corresponds as well as possible to that of the housing body 300 in order to be able to operate the optoelectronic component 100 to avoid tension and deformation due to different thermal expansions.
- the bezel 500 may be made of a thin metal sheet, for example.
- the aperture 500 has an opening 510 which is arranged over the light-emitting surface 410 of the optoelectronic semiconductor chip 400 .
- electromagnetic radiation emitted on the light-emitting surface 410 of the optoelectronic semiconductor chip 400 can pass through the opening 510 of the aperture 500 and be emitted at the top side 101 of the optoelectronic component 100 .
- the size of the opening 510 is dimensioned such that the aperture 500 causes the least possible shadowing of the radiation emitted by the optoelectronic semiconductor chip 400, but at the same time the components of the optoelectronic component 100 are shielded as completely as possible by the aperture 500 from the outside of the optoelectronic component 100 are shielded from incident radiation.
- a light-absorbing coating 560 may be arranged.
- the light-absorbing coating 560 can also extend to other sections of the aperture 500 or be provided exclusively in other sections of the aperture 500 in order to reduce scattering of radiation emitted by the optoelectronic semiconductor chip 400.
- the bonding wires 425 extending in the chip cavity 310 can be largely covered by the screen 500 and thus protected from damage by external influences. This can make it possible to dispense with further measures to protect the bonding wires 425.
- the screen 500 serves not only to protect against external radiation (e.g. sunlight) but also to shield the optoelectronic component 100 from electromagnetic radiation.
- external radiation e.g. sunlight
- the variants of the optoelectronic component 100 described below have advantageous properties in terms of electromagnetic compatibility (EMC properties). This is particularly useful when the optoelectronic component 100 has high-frequency components, for example high-frequency components integrated into the optoelectronic semiconductor chip 400 .
- the electromagnetic shielding caused by the panel 500 is achieved in the variants of the optoelectronic component 100 described below in that the electrically conductive panel 500 is electrically connected to a defined electrical reference potential of the optoelectronic component 100, in particular, for example a ground potential.
- the reference potential can also be a VDD potential, for example.
- Fig. 2 shows a schematic sectional side view of a variant of the optoelectronic component 100.
- the panel 500 has two connecting elements 600 which are electrically conductive with a reference contact 215 on the top 201 of the Carrier 200 are in contact.
- the reference contact 215 is formed by an upper contact surfaces 211 of the upper side metallization 210 of the carrier 200, which provides a defined reference potential, for example a ground potential or a VDD potential.
- the connecting elements 600 are formed by portions 610 of the panel 500 that are bent over relative to the surrounding areas of the panel 500 .
- the connecting elements 600 thus have the form of spring tongues.
- the bent portions 610 forming the connecting elements 600 can, for example, be punched out in relation to the surrounding areas of the panel 500 .
- the electrical contact between the connecting elements 600 and the reference contact 215 on the top side 201 of the carrier 200 can be established by contact areas 620 formed on the longitudinal ends of the connecting elements 600 with spring force against the reference contact 215-forming upper contact surfaces 211 of the top side metallization 210 of the carrier 200 press.
- This provides the advantage that thermal deformations occurring during operation of the optoelectronic component 100 can be compensated for.
- each connecting element 600 extends through its own connecting element cavity 320 in the housing body 300.
- a common connecting element cavity 320 could also be provided for all connecting element 600.
- the connecting elements 600 could also be arranged in the chip cavity 310 .
- Fig. 3 shows a schematic representation of a plan view of the top side 101 of a variant of the optoelectronic component 100.
- the variant in Fig. 3 like the variant in Fig. 2, has two connecting elements 600 and shows a possible arrangement of these connecting elements 600.
- the connecting elements 600 are arranged on both sides of the optoelectronic semiconductor chip 400 and are orientated antiparallel. As a result, the spring forces caused by the connecting elements 600 advantageously balance each other out. However, other arrangements of the connecting elements 600 are also possible.
- FIG. 4 shows a schematic top view of the top side 101 of a further variant of the optoelectronic component 100.
- the diaphragm 500 has three openings 510, which are arranged over the light-emitting areas 410 of the optoelectronic semiconductor chips 400.
- FIG. 4 shows a schematic top view of the top side 101 of a further variant of the optoelectronic component 100.
- the diaphragm 500 has three openings 510, which are arranged over the light-emitting areas 410 of the optoelectronic semiconductor chips 400.
- the variant of the optoelectronic component 100 shown in FIG. 4 can thus be divided into three sections, each of which is designed like the variant of the optoelectronic component 100 shown in FIG.
- the three optoelectronic semiconductor chips 400 of the variant of the optoelectronic component 100 shown in Fig. 4 can be designed, for example, to emit electromagnetic radiation with different wavelengths.
- the three optoelectronic semiconductor chips 400 can be designed to emit electromagnetic radiation with red, green and blue light colors.
- optoelectronic semiconductor chips 400 can also be positioned relative to one another in a different geometric arrangement. It is possible to arrange several or all of the optoelectronic semiconductor chips 400 in a common chip cavity 310 of the housing body 300 .
- FIG. 5 shows a schematic, sectional side view of a further variant of the optoelectronic component 100.
- the variant shown in FIG a different number of connecting elements 600 and a different geo metric arrangement of the connecting elements 600 would again be possible.
- the seemssele elements 600 are formed as separate elements and in fastening supply sections 630 on the underside 502 of the panel 500 be fastened. This attachment can be realized, for example, by soldering, welding or gluing. Due to the design of the connecting elements 600 as separate elements, the screen 500 in the variant of the optoelectronic component 100 shown in FIG. 5 has no openings in the area of the connecting elements 600 . As a result, the screen 500 in the variant shown in FIG. 5 can provide particularly effective protection against sunlight and other radiation incident from outside.
- the connecting elements 600 are common with the optoelectronic semiconductor chip 400 in the chip cavity 310 of the housing body 300 arranged.
- the connection elements 600 it would also be possible to arrange the connection elements 600 in their own connection element cavities 320 of the housing body 300 .
- FIG. 6 shows a schematic, sectional side view of a further variant of the optoelectronic component 100.
- the upper part 580 and the lower part 590 can be connected to one another, for example via an adhesive connection.
- a top of the upper part 580 forms the top 501 of the bezel 500.
- An underside of the lower part 590 forms the underside 502 of the bezel 500.
- the variant shown in FIG. 6 has two connecting elements 600 which are formed by sections 610 of the lower part 590 of the shutter 500 which are bent over in relation to the surrounding areas of the lower part 590 of the shutter 500 .
- the upper part 580 of the panel 500 is also in the area of the connecting elements 600 closed.
- the diaphragm 500 has no openings overall in the region of the connecting elements 600, even in the variant of the optoelectronic component 100 shown in FIG.
- FIG. 7 shows a schematic sectional side view of a further variant of the optoelectronic component 100.
- the connecting elements 600 are again formed by sections 610 that are bent over relative to the surrounding areas of the diaphragm 500, as is also the case in the variant 2 is the case.
- the connec tion elements 600 could also be formed as separate elements fastened to the screen 500, as in the variant in FIG. 5, or from a lower part 590 of the screen 500, as in the variant in FIG.
- the connecting elements 600 again extend through each Weil's own connection element cavities 320 of the housing body 300 could alternatively also be arranged in the chip cavity 310.
- the connecting elements 600 are not in contact with a reference contact on the upper side 201 of the carrier 200 . Instead, the connecting elements 600 extend through openings 240 in the carrier 200 and each have a soldering surface 640 that is accessible on the underside 102 of the optoelectronic component 100 . During the assembly of the optoelectronic component 100, these soldering pads 640 are electrically conductively connected to a ground potential or to another fixed potential.
- a fastening material 245 can be arranged, which fixes the connecting elements 600.
- the attachment material 245 can be a silver conductive adhesive, for example.
- the fastening material 245 can also be an electrically insulating material and can be used to electrically insulate the connecting elements 600 from the carrier 200 and the top-side metallization 210 and the bottom-side metallization 220 .
- Fig. 8 shows a schematic, sectional side view of a further variant of the optoelectronic component 100.
- the connecting elements 600 of the diaphragm 500 are embodied as in the variant of the optoelectronic component 100 shown in Fig. 2.
- connecting elements 600 could also be designed as in the variants of the optoelectronic component 100 shown in FIGS.
- the screen 500 has a side wall 530 which is oriented perpendicular to the other sections of the screen 500 .
- the screen 500 thus has a cup shape overall.
- the side wall 530 encloses an area 110 between the carrier 200 and the panel 500 laterally.
- the cup-shaped screen 500 also encloses the housing body 300.
- the screen 500 in the variant of the optoelectronic component 100 shown in FIG. 8 causes a particularly effective electromagnetic shielding.
- FIG. 8 shows that causes a particularly effective electromagnetic shielding.
- Fig. 9 shows a schematic sectional side view of a further variant of the optoelectronic component 100.
- the aperture 500 encloses laterally.
- the screen 500 has no connecting elements 600.
- the side wall 530 of the panel 500 forms a contact area 540 where it bears against the top side 201 of the carrier 200, which is in electrically conductive contact with a reference contact 215 on the top side 201 of the carrier 200.
- the panel 500 is also in the variant shown in FIG. 9 with the potential of the reference contact 215 in an electrically conductive connection.
- housing body 300 there is no housing body 300 in the variant of the optoelectronic component 100 shown in FIG. 9 . This is possible because the panel 500 encloses the region 110 between the carrier 200 and the panel 500 and thereby protects it from external influences.
- the housing body 300 could also be omitted in the variant of the optoelectronic component 100 shown in FIG. 8 .
- the variant of the optoelectronic component 100 shown in FIG. 9 could also have such a housing body 300 .
- FIG. 10 shows a schematic sectional side view of a further variant of the optoelectronic component 100.
- the variant shown in FIG. 10 differs from 9 in that the contact area 540 of the side wall 530 of the screen 500 is widened by an additional collar. This makes it easier to mechanically and electrically conductively connect the contact area 540 to the upper side 201 of the carrier 200 and to the reference contact 215 arranged on the upper side 201 of the carrier 200 .
- the connection can be an adhesive connection, for example.
- FIG. 11 shows a schematic, sectional side view of a further variant of the optoelectronic component 100.
- a housing body 300 is present.
- the panel 500 is attached to the top 301 of the housin 300 selvess.
- the panel 500 has no connec tion elements 600, but again a side wall 530, which encloses the area 110 between the carrier 200 and the panel 500 laterally.
- the side wall 530 in the variant of FIG. 11 also encloses the carrier 200 laterally. So that the side wall 530 of the Blen de 500 is not seated on the upper side 201 of the carrier 200.
- the side wall 530 has a soldering surface 550, which is arranged in a common plane with the lower contact surfaces 221 on the underside 202 of the carrier 200 and is therefore accessible on the underside 102 of the optoelectronic component 100.
- the soldering surface 550 of the diaphragm 500 is electrically conductively connected to a reference potential.
- Fig. 12 shows a schematic sectional side view of a further variant of the optoelectronic component 100.
- the variant shown in Fig. 12 is designed similarly to the variant shown in Fig. 11, so that the side wall 530 of the screen 500 is also used in the case of the in Fig. 12
- Variant shown laterally encloses the carrier 200 and has a section which forms a soldering surface 550 which is accessible on the underside 102 of the optoelectronic component 100 .
- the side wall 530 of the diaphragm 500 in the variant shown in FIG. 12 is mechanically connected in this area connected to the carrier 200, for example via a clamp or flanged connection.
- the housing body 300 can optionally also be dispensed with.
- Fig. 13 shows a schematic sectional side view of a further variant of the optoelectronic component 100.
- the diaphragm 500 is similar to the variant of Fig. 9 be formed on the described variants.
- an edge region 520 of the aperture 500 that delimits the opening 510 of the aperture 500 is bent in the direction of the top side 201 of the carrier 200 and the top side 401 of the optoelectronic semiconductor chip 400 .
- the opening 510 of the screen 500 in the case shown in Fig.
- FIG. 14 shows a top view of the top 101 of a further variant of the optoelectronic component 100.
- the screen 500 has slits 521 starting from the corners of the rectangular opening 510 for this purpose.
- the edge region 520 is divided into four wings, which are bent towards the top 201 of the carrier 200 and the top 401 of the optoelectronic semiconductor chips 400 out.
- An alternative possibility is to bend the edge area 520 of the opening 510 of the panel 500 by deep-drawing in the direction of the upper side 201 of the carrier 200. This eliminates the need for the provision of the slots 521, as a result of which the components of the optoelectronic device 100 can be shielded even more completely by the panel 500.
- a curved edge region 520 as in the case of the diaphragm 500 of the variant of the optoelectronic component 100 shown in FIG. 13, can also be provided in the variants of the optoelectronic component 100 described with reference to the other figures.
- a dam 700 delimiting the light-emitting surface 410 is arranged on the upper side 401 of the optoelectronic semiconductor chip 400 .
- the dam 700 suitably comprises an electrically insulating material.
- the dam 700 at least partially covers the electrical contact pads 420 on the upper side 401 of the optoelectronic semiconductor chip 400, so that the bonding wires 425 connected to the electrical contact pads 420 are at least partially embedded in the dam 700.
- the dam 700 it is possible to arrange the dam 700 between the electrical contact pads 420 and the light-emitting surface 410 of the optoelectronic semiconductor chip 400, so that the electrical contact pads 420 and the bonding wires 425 connected to the electrical contact pads 420 are arranged outside of the area bounded by the dam 700 are.
- a potting material 710 is arranged in the chip cavity 310 of the housing body 300 in the variant of the optoelectronic component 100 shown in FIG. 13 .
- the potting material 710 covers the top side 201 of the carrier 200 that is accessible in the region of the chip cavity 310 and extends from the wall of the housing body 300 delimiting the chip cavity 310 to the optoelectronic semiconductor chip 400, so that the optoelectronic semiconductor chip 400 is at least partially embedded in the potting material 710.
- the bonding wires 425 running between the electrical contact areas 420 of the optoelectronic semiconductor chip 400 and the upper contact areas 211 on the upper side 201 of the carrier 200 are also at least partially embedded in the potting material 710 and are thereby protected from damage.
- the encapsulation material 710 may have been arranged in the chip cavity 310 by means of a dosing method, for example.
- the dam 700 may have served to prevent the light-emitting surface 410 on the upper side 401 of the optoelectronic semiconductor chip 400 from being covered by the encapsulation material 710 .
- the potting material 710 can also have covered the electrical contact areas 420 on the upper side 401 of the optoelectronic semiconductor chip 400 and thereby provide additional protection for the bonding wires 425 connected to the electrical contact areas 420. It may also be possible to place the molding material 710 in the chip cavity 310 without providing the dam 700 .
- the dam 700 and the potting material 710 can also be provided in all other variants of the optoelectronic component 100 that have a housing body 300 with a chip cavity 310 .
- a laser marking 570 is provided on the upper side 501 of the diaphragm 500 forming the upper side 101 of the optoelectronic component 100 .
- the laser marking 570 can identify an orientation of the optoelectronic component 100 or a type of the optoelectronic component 100, for example.
- a corresponding laser marking tion 570 can also be provided in the other variants of the optoelectronic component 100 African.
- Fig. 15 shows a schematic sectional side view of a further variant of the optoelectronic component 100.
- the screen 500 as in the variant of the optical component 100 shown in Fig. 2, has connecting elements 600 which are located in connecting element cavities 320 of the housing body 300 are arranged.
- the panel 500 has a side wall 530 which laterally encloses the area 110 between the panel 500 and the carrier 200 .
- the edge area 520 of the opening 510 of the screen 500 is bent in the direction of the carrier 200 and the optoelectronic semiconductor chip 400, as has been described with reference to FIGS.
- the panel 500 could also be designed with the features described with reference to the remaining figures.
- the casting material 710 present in the variant in FIG. 13 is not present in the variant in FIG. 15, but could also be present.
- the dam 700 could also be omitted.
- the variant of the optoelectronic construction element 100 shown in FIG. 15 has an electrically conductive layer 800 on the light-emitting surface 410 at the top
- the electrically conductive layer 800 is electrically conductive tend to the panel 500 connected. As a result, the electrically conductive layer 800 completes the electromagnetic shielding achieved by the screen 500 also in the area above the light-emitting surface 410 where the screen 500 has the opening 510 . It is expedient for the electrically conductive layer 800 to have a wavelength-converting material 810 .
- the electrically conductive layer 800 can serve to at least partially convert electromagnetic radiation emitted by the optoelectronic semiconductor chip 400 at the light-emitting surface 410 into electromagnetic radiation of a different wavelength.
- the electrical conductivity of the electrically conductive layer 800 can be achieved, for example, by electrically conductive particles mixed into the wavelength-converting material 810 .
- the wavelength-converting material 810 can also be introduced into an already electrically conductive matrix, for example an electrically conductive polymer.
- the electrically conductive layer 800 can also have a multilayer structure and, for example, have at least one transparent, electrically conductive layer and a wavelength-converting layer.
- a further possibility consists in providing an electrically conductive grid or mesh which is arranged on or under a layer comprising the wavelength-converting material 810 .
- the wavelength converting material 810 can also be placed in the meshes of this electrically conductive grid.
- the mesh size of the electrically conductive grid or network can be adapted to the electromagnetic frequencies to be shielded. If the light-emitting surface 410 of the optoelectronic semiconductor chip 400 is divided into individual pixels, the mesh size of the electrically conductive grid or network can also be adapted to the size of these pixels. As a result, a contrast between the individual pixels of the light-emitting surface 410 can also be increased.
- the electrically conductive layer 800 is electrically conductively connected to the screen 500 in that the electrically conductive layer 800 extends continuously up to the upper side 501 of the screen 500 .
- the electric The conductive layer 800 thus forms a cohesive layer that extends over the light-emitting surface 410 of the optoelectronic semiconductor chip 400 and part of the top side 501 of the panel 500 .
- the dam 700 and the edge area 520 of the opening 510 of the screen 500 are designed and arranged in such a way that the edge area 520 of the opening 510 of the screen 500 is directly adjacent to the dam 700 .
- the electrically conductive layer 800 extends over the light-emitting surface 410, part of the dam 700 and the edge region 520 of the aperture 500 to the top 501 of the aperture 500.
- the electrically conductive layer 800 can in this water variant of the optoelectronic component 100 in example Spraying are applied after the panel 500 has been placed over the housing body 300 and the optoelectronic semiconductor chip 400's.
- the electrically conductive layer 800 can be arranged on the light-emitting surface 410 of the optoelectronic semiconductor chip 400 and on at least part of a potting material 710 arranged in the chip cavity 310 as in the variant in FIG. 13 .
- the electrically conductive layer 800 can also extend over at least part of the upper side 310 of the housing body 300 .
- the electrically conductive layer 800 is applied before the panel 500 is arranged, for example by spraying on. The panel 500 is then arranged and an electrically conductive connection is established between the panel 500 and the electrically conductive layer 800 .
- This electrically conductive connection can result either from direct contact between the electrically conductive layer 800 and the underside 502 of the cover 500 or from an electrically conductive material arranged between the underside 502 of the cover 500 and the electrically conductive layer 800, for example an electrically conductive material gen glue.
- an electrically conductive material gen glue arranged between the underside 502 of the cover 500 and the electrically conductive layer 800, for example an electrically conductive material gen glue.
- Another possibility is to arrange the electrically conductive layer 800 on the upper side 401 of the optoelectronic semiconductor chip 400 in such a way that there is direct contact between the electrically conductive layer 800 and an electrical contact surface 420 of the optoelectronic semiconductor chip 400, which is connected to the Potential of the aperture 500, for example a ground potential, is connected.
- the electrically conductive layer 800 is connected to the potential of the screen 500 via a bonding wire. This can either be one of the bonding wires 425 connected to the electrical contact areas 420 of the optoelectronic semiconductor chip 400 or another bonding wire.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Led Device Packages (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
Abstract
Description
Claims
Priority Applications (2)
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JP2024505192A JP2024530141A (ja) | 2021-07-29 | 2022-07-18 | オプトエレクトロニクスコンポーネント |
CN202280052901.8A CN117813699A (zh) | 2021-07-29 | 2022-07-18 | 光电子器件 |
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DE102021208179.7 | 2021-07-29 | ||
DE102021208179.7A DE102021208179A1 (de) | 2021-07-29 | 2021-07-29 | Optoelektronisches bauelement |
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WO2023006462A1 true WO2023006462A1 (de) | 2023-02-02 |
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PCT/EP2022/069979 WO2023006462A1 (de) | 2021-07-29 | 2022-07-18 | Optoelektronisches bauelement |
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JP (1) | JP2024530141A (de) |
CN (1) | CN117813699A (de) |
DE (1) | DE102021208179A1 (de) |
WO (1) | WO2023006462A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100116970A1 (en) * | 2008-11-12 | 2010-05-13 | Wen-Long Chou | Photo detection device |
DE102013207111A1 (de) * | 2013-04-19 | 2014-11-20 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement |
US20190302350A1 (en) * | 2018-03-30 | 2019-10-03 | Nichia Corporation | Method of manufacturing light emitting device |
DE102021100530A1 (de) * | 2021-01-13 | 2022-07-14 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Optoelektronisches halbleiterbauelement und verfahren zur herstellung eines optoelektronischen halbleiterbauelements |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2571154B1 (fr) | 1984-09-28 | 1987-01-23 | Radiotechnique Compelec | Procede de fabrication d'un composant d'extremite pour fibre optique, et composant ainsi obtenu |
JP4772557B2 (ja) | 2006-03-30 | 2011-09-14 | 住友電工デバイス・イノベーション株式会社 | 電子部品、および電子部品用モジュール |
DE102013204862A1 (de) | 2013-03-20 | 2014-10-09 | Osram Gmbh | Optoelektronische Baugruppe und Verfahren zum Herstellen einer optoelektronischen Baugruppe |
DE102014117983A1 (de) | 2014-12-05 | 2016-06-09 | Osram Opto Semiconductors Gmbh | Konversionselement, optoelektronisches Halbleiterbauelement und Verfahren zur Herstellung von Konversionselementen |
US10566467B2 (en) | 2015-11-17 | 2020-02-18 | Ams Sensors Singapore Pte. Ltd. | Optical device |
-
2021
- 2021-07-29 DE DE102021208179.7A patent/DE102021208179A1/de active Pending
-
2022
- 2022-07-18 JP JP2024505192A patent/JP2024530141A/ja active Pending
- 2022-07-18 WO PCT/EP2022/069979 patent/WO2023006462A1/de active Application Filing
- 2022-07-18 CN CN202280052901.8A patent/CN117813699A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100116970A1 (en) * | 2008-11-12 | 2010-05-13 | Wen-Long Chou | Photo detection device |
DE102013207111A1 (de) * | 2013-04-19 | 2014-11-20 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement |
US20190302350A1 (en) * | 2018-03-30 | 2019-10-03 | Nichia Corporation | Method of manufacturing light emitting device |
DE102021100530A1 (de) * | 2021-01-13 | 2022-07-14 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Optoelektronisches halbleiterbauelement und verfahren zur herstellung eines optoelektronischen halbleiterbauelements |
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JP2024530141A (ja) | 2024-08-16 |
CN117813699A (zh) | 2024-04-02 |
DE102021208179A1 (de) | 2023-02-02 |
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