WO2014139893A1 - 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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- WO2014139893A1 WO2014139893A1 PCT/EP2014/054479 EP2014054479W WO2014139893A1 WO 2014139893 A1 WO2014139893 A1 WO 2014139893A1 EP 2014054479 W EP2014054479 W EP 2014054479W WO 2014139893 A1 WO2014139893 A1 WO 2014139893A1
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- semiconductor chip
- deflecting element
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/855—Optical field-shaping means, e.g. lenses
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/822—Materials of the light-emitting regions
- H10H20/824—Materials of the light-emitting regions comprising only Group III-V materials, e.g. GaP
- H10H20/825—Materials of the light-emitting regions comprising only Group III-V materials, e.g. GaP containing nitrogen, e.g. GaN
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/84—Coatings, e.g. passivation layers or antireflective coatings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/851—Wavelength conversion means
- H10H20/8514—Wavelength conversion means characterised by their shape, e.g. plate or foil
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/857—Interconnections, e.g. lead-frames, bond wires or solder balls
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/01—Manufacture or treatment
- H10H20/036—Manufacture or treatment of packages
- H10H20/0363—Manufacture or treatment of packages of optical field-shaping means
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/01—Manufacture or treatment
- H10H20/036—Manufacture or treatment of packages
- H10H20/0364—Manufacture or treatment of packages of interconnections
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/84—Coatings, e.g. passivation layers or antireflective coatings
- H10H20/841—Reflective coatings, e.g. dielectric Bragg reflectors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/855—Optical field-shaping means, e.g. lenses
- H10H20/856—Reflecting means
Definitions
- Component is designed to emit electromagnetic radiation, preferably light.
- the device emits during operation infrared radiation, UV radiation, colored or white light.
- the component has at least one semiconductor chip.
- the device may also include more than one semiconductor chip,
- the semiconductor chip is preferably on a III-V semiconductor material, in particular on a A nitride compound semiconductor material or a phosphide compound semiconductor material or an arsenide compound semiconductor material, based semiconductor chip.
- the semiconductor chip is a light emitting diode (LED) chip.
- the semiconductor chip has, for example, a small thickness, that is to say a small vertical extent.
- the substrateless semiconductor chip has a thickness of less than 15 ⁇ , preferably less than 7 ⁇ , for example, 5 ⁇ or 6 ⁇ on.
- the semiconductor chip may, for example, be a thin-film chip in which a growth substrate is removed.
- the semiconductor chip is then a surface emitter in which a majority of the radiation emerging from the chip is transmitted through a main surface of the chip
- the semiconductor chip may be a
- semiconductor chip with growth substrate in particular act with a radiation-transparent sapphire substrate.
- the semiconductor chip may be a
- Volume emitter act in which a significant proportion of the exiting radiation through side surfaces which extend perpendicular or transverse to the main surfaces of the chip exits.
- the semiconductor chip has an active zone for generating electromagnetic radiation, in particular of light.
- the semiconductor chip preferably has one
- Main emission direction for example, perpendicular to an emission surface of the semiconductor chip.
- main emission direction more than 50% of the generated Radiation, preferably more than 70% of the radiation generated by the semiconductor chip radiated.
- the main radiation direction applies in particular to semiconductor chips, which are surface emitters.
- the main emission direction is defined by the direction parallel to
- Proportion of radiation emitted in this direction This definition of the main emission direction applies in particular to semiconductor chips which are volume emitters.
- the semiconductor chip has at least one side surface.
- the side surface preferably extends circumferentially around the semiconductor chip and limits it in the lateral
- the side surface extends transversely or
- Semiconductor chip also has an upper and a lower side. Top and bottom extend transversely or perpendicular to the side surface of the semiconductor chip. Top and bottom extend parallel to the lateral
- the device may further comprise a carrier.
- Semiconductor chip is then arranged on the carrier.
- the underside of the semiconductor chip is fastened on the carrier, for example soldered.
- the carrier serves for the mechanical stabilization of the semiconductor chip.
- a part of the electromagnetic radiation generated by the semiconductor chip emerges through the side surface of the semiconductor chip during operation of the semiconductor chip. In other words, a part of the radiation is not in the main emission direction, perpendicular to the lateral main extension direction,
- the generated radiation exits through the side surface.
- the remaining part of the radiation that is to say preferably up to 80% of the radiation, for example 60% or 70% of the radiation emitted by the semiconductor chip during operation, exits through the upper side of the semiconductor chip.
- the component further has at least one deflection element.
- the deflecting element is preferably formed in one piece.
- the deflecting element can be formed from a homogeneous material. In other words, the mechanical, electrical and / or optical properties, in particular the
- Refractive index of the material of the deflecting element are the same at different points of the deflecting element.
- the deflection element has no layer structure.
- the deflecting element is therefore not formed in this embodiment, for example, with layers having different refractive indices, but is formed for example by a single, thick layer of a homogeneous material.
- the deflecting element may be formed as a deflecting layer.
- a lateral extent of the deflecting element is preferably smaller than a lateral extent of the
- a vertical extension of the deflecting element corresponds approximately to or equal to the vertical extent of the semiconductor chip.
- the deflection element is designed for deflecting the radiation generated by the semiconductor chip, which emerges from the side surface of the semiconductor chip.
- Deflection element completely covers the side surfaces of the semiconductor chip, for example.
- the deflecting element is designed to be transparent to radiation.
- the deflection element is designed such that the radiation emerging laterally from the semiconductor chip, which is generated in operation in the semiconductor chip, the
- the deflecting element and the semiconductor chip are arranged next to one another.
- the deflection element is arranged on the side surface of the semiconductor chip. In this case, the deflecting element only on a part of the side surface of the
- the deflecting element can also be arranged on the complete side surface of the semiconductor chip.
- the deflecting element can be arranged circumferentially around the semiconductor chip. In this case, the deflecting element
- the deflecting element comprises a material whose
- Refractive index is greater than an average refractive index of the semiconductor material of the semiconductor chip, to which the deflecting element adjoins.
- the middle one is greater than an average refractive index of the semiconductor material of the semiconductor chip, to which the deflecting element adjoins.
- the average refractive index of the material of the deflecting element is at a predetermined wavelength more than 10%, for example by 15% or 20%, greater than the average refractive index of the semiconductor material of the semiconductor chip. Due to the high refractive index of the deflecting element and the associated refractive index jump between semiconductor and deflecting element, a portion of the radiation generated by the semiconductor chip, which is at the side surface of the
- Semiconductor chips exits, deflected by the deflecting element in the direction of the main emission of the semiconductor chip. Part of the radiation that is on a side surface of the
- the deflecting element may increase the probability of a deflection of the radiation leaving the semiconductor chip through its side face in the direction of the main emission direction independently of the angle of incidence of the laterally emerging radiation.
- the angle of incidence can here and below be given by the angle at which the
- the radiation is only partially reflected.
- the degree of this Reflection can be increased by attaching the deflecting element.
- the side surfaces of the deflection element run, for example, parallel to the side surfaces of the semiconductor chip on the side of the deflection element facing away from the semiconductor chip.
- the deflection element has a first side surface facing the side surface of the semiconductor chip.
- the deflecting element further comprises a second side disposed opposite the first side surface
- First side surface and second side surface are arranged parallel to each other. First side surface and second side surface perpendicular to
- the first side surface of the deflecting element forms a
- Radiation entrance area is / are the
- Radiation entrance surface is an interface between the semiconductor chip and the deflection element. Die
- Radiation entrance surface or first side surface is preferably planar or planar.
- the Radiation entrance surface is preferably arranged parallel and opposite to the side surface of the semiconductor chip.
- the second side surface of the deflecting element is preferably planar or planar.
- the deflecting element is designed and arranged in such a way that an emergence of the occurred in the deflecting element
- Radiation from the second side surface of the deflecting element is reduced or prevented. For example, less than 10%, for example 5% or 2%, enter the
- Mirror reflection are, which may be, for example, a reflective metal layer, which is applied to the deflection element on the second side surface in particular directly.
- total reflection is understood to mean that the angle at which the radiation strikes a point of the second side surface with respect to a
- the deflecting element has an upper side facing away from the carrier.
- the upper surface extends perpendicularly or transversely to the first and the second side surface of the deflecting element.
- the upper side extends substantially parallel to the lateral main extension direction of the component.
- the deflecting element is designed and arranged such that the emitted from the semiconductor chip and in the
- the upper side of the deflecting element has a structuring for this purpose.
- the structuring of the upper side facilitates the decoupling of the radiation in the forward direction.
- the top of the deflecting element can be roughened, for example.
- the upper side of the deflecting element can be etched, brushed, ground or sandblasted.
- the side surfaces of the deflecting element are made smoother than the top side.
- the total reflected radiation Preferably, 90% or more of the total reflected radiation, more preferably more than 95%, for example, 98% of the total reflected radiation at the top of the
- Disconnected deflecting element This increases the luminous efficacy of the component. Radiation losses by laterally emerging from the semiconductor chip and / or the deflecting radiation are avoided.
- the semiconductor chip on a carrier facing away from the top.
- the semiconductor chip is designed such that a further part of the radiation emitted by the semiconductor chip,
- the radiation emitted by the semiconductor chip in the main emission direction is coupled out at the top side of the semiconductor chip.
- the top of the semiconductor chip is coupled out at the top side of the semiconductor chip.
- the upper side of the semiconductor chip can be roughened by means of etching, brushing, grinding or sandblasting, for example.
- the upper side is in particular rougher than the lower side and the side surface of the semiconductor chip.
- 80%, 90% or more, more preferably 95%, 98% or 99% of the radiation that does not exit through the side surface of the semiconductor chip is coupled out of the semiconductor chip at the top side of the semiconductor chip.
- the component has at least one wavelength conversion element.
- Wavelength conversion element is at least partially Conversion of the top of the semiconductor chip
- Wavelength conversion element for at least partial conversion of the top of the deflecting element
- the wavelength conversion element is arranged downstream of the deflecting element and the semiconductor chip in the direction of radiation.
- the wavelength conversion element may be arranged at a distance from the deflection element and the semiconductor chip.
- the wavelength conversion element can also be arranged directly or directly adjacent to the deflecting element and the semiconductor chip.
- a lateral extension of the wavelength conversion element preferably corresponds to a total lateral extent of deflecting element and semiconductor chip together.
- Led deflecting element up to the top also light, which would normally be lost laterally, contribute to the conversion. Additional, arranged in extension of the side surface of the semiconductor chip
- Wavelength conversion elements are superfluous.
- the deflecting element is directly adjacent to the side surface of the semiconductor chip
- connection layer Deflection element and the semiconductor chip arranged a connection layer.
- the first side surface of the deflection element in this case directly adjoins the connection layer.
- the side surface of the semiconductor chip also directly adjoins the connection layer.
- the bonding layer may be, for example, an adhesive layer.
- the connection layer serves to firmly and preferably permanently connect the deflection element and the semiconductor chip. Thus, a very stable device can be provided.
- the bonding layer comprises a material whose
- the bonding layer may be, for example, at least one of the following
- Materials may be formed or any of the following
- Materials include: low-breaking silicone adhesive, Si0 2 , A10N, A1 2 0 3 , A1N, SiN, ZnO, Zr0 2 .
- the refractive index of the material of the connecting layer is preferably smaller than the refractive index of the material of the deflecting element.
- the refractive index of the material the bonding layer be larger, smaller or equal to that of the adjacent material of the semiconductor chip. If the refractive index of the bonding layer is approximately equal to the refractive index of the adjacent material of
- Total reflection on the second side surface increased and the efficiency of the device further increased. Furthermore, by the connecting layer, the reflection probability at the second side surface can be further increased, even for an angle of incidence which is smaller than the critical angle of total reflection.
- the deflecting element has a underside facing a carrier. Between the underside of the deflecting element and the carrier is a
- the mirror layer is arranged.
- the mirror layer is
- the mirror layer may additionally or alternatively also be located on the second side surface of the deflecting element.
- the mirror layer may then extend, for example, along the entire underside and the entire second side surface of the deflecting element.
- the mirror layer serves to scatter light, which impinges on the underside of the deflecting element, to the second
- the deflecting element may, for example, titanium dioxide (TiC ⁇ ), tellurium dioxide, high refractive index silicon or indium gallium nitride (InGaN)
- Deflection element to a very high refractive index, which in each case is higher than the particular for a given value for the wavelength of the emitted radiation
- Refractive index of GaN Due to the differences in the refractive indices of the materials of deflection element and
- a lateral coupling of the radiation emitted by the semiconductor chip radiation can be reduced or prevented.
- the semiconductor component produced thereby preferably corresponds to the semiconductor component described here. All disclosed for the device features are therefore also disclosed for the process and vice versa.
- the method comprises the following steps: First, a carrier is provided.
- the carrier is suitable as a carrier structure for the semiconductor chip and the deflection element.
- the carrier serves as a stabilizing element for the semiconductor chip and the deflection element.
- the semiconductor chip is a semiconductor chip.
- this will be at least one
- Deflecting element provided.
- the material of the deflection element has a greater refractive index than the material of the semiconductor chip.
- the semiconductor chip and the deflection element are arranged such that the first side surface of the deflection element faces the side surface of the semiconductor chip.
- the carrier can be removed again.
- Wavelength conversion element downstream of the deflecting element and the semiconductor chip in the emission direction is arranged below the upper side of deflecting element and semiconductor chip. Due to the special arrangement and design of
- Deflection deflected and at the top of the Deflection element are coupled out of the deflection.
- a majority of the radiation emitted by the semiconductor chip preferably more than 90%, particularly preferably more than 95%, for example 98% of the radiation, impinges on the wavelength conversion element and can therefore be used for
- the deflecting element is designed in the shape of a frame. In particular, this surrounds
- the semiconductor chip preferably completely.
- the semiconductor chip and the deflecting element are firmly connected, preferably permanently.
- Deflecting element and semiconductor chip Connecting materials between the deflecting element and the semiconductor chip are superfluous. Thus, the above-described semiconductor device is easily manufactured.
- the semiconductor chip into the deflection element
- Deflection element and semiconductor chip is arranged, for
- connection layer can first be applied to the first side surface of the deflection element and / or the side surface of the semiconductor chip before the semiconductor chip enters the deflection element
- the semiconductor chip Also first be introduced into the deflection and the connection layer only later between semiconductor chip and deflector arranged, for example injected, are. In this way, a very stable connection between the semiconductor chip and the deflecting element is produced and thus a very stable component is provided.
- the deflecting element is produced by means of a lithography method. This is the
- Deflection element during the production of the semiconductor chip by a coating method such as sputtering, CVD or the like applied and then, for example
- FIG. 1 shows a side view of a component from the prior art.
- FIG. 2 shows a side view of a component
- FIG. 3 shows a side view of a component according to a further exemplary embodiment.
- FIG. 4 shows exemplary reflection probabilities on the side surfaces of a further exemplary embodiment of an optoelectronic semiconductor component described here.
- the same, similar or equivalent elements are provided in the figures with the same reference numerals.
- the figures and the proportions in the figures are provided in the figures with the same reference numerals.
- Component has a semiconductor chip 1, for example an LED chip.
- the semiconductor chip 1 has a
- Semiconductor material such as GaN on.
- Semiconductor chip 1 has an active zone (not explicitly shown) for the emission of electromagnetic
- the semiconductor chip 1 emits colored, for example blue, light.
- the semiconductor chip 1 has a side surface 4 which extends circumferentially around the semiconductor chip 1.
- side surfaces 4 of the semiconductor chip 1 can also be used in this context if the respective side surface 4 is not considered to be circumferential.
- the side surface 4 is perpendicular to
- the semiconductor chip 1 further has an upper side 2 and a lower side 3, which are arranged opposite one another.
- the upper side 2 of the semiconductor chip 1 is thereby
- the upper side 2 represents the primary outcoupling surface of the semiconductor chip 1.
- the upper side 2 is structured, for example roughened. This can be achieved by etching, sandblasting, brushing or grinding the top 2.
- the top 2 is
- the structuring helps to improve the light extraction from the semiconductor chip 1.
- the semiconductor chip 1 radiates predominantly, that is to say to at least 50%, preferably to 80% or more,
- the semiconductor chip 1 also radiates a portion of the radiation 6 in the lateral direction, so that this part of the radiation 6 exits through the side surface 4 of the semiconductor chip 1.
- the semiconductor chip 1 emits 50% or less, for example 20% or 30% of the radiation 6, laterally.
- the side surface 4 represents a secondary outcoupling surface of the semiconductor chip 1.
- Optical elements for example a
- Wavelength conversion element 5 which are arranged downstream of the semiconductor chip 1 in the primary emission direction, can not however be illuminated by the laterally emitted radiation in conventional components, such as the component shown in FIG.
- the radiation 6 emerging from the side surface 4 of the semiconductor chip 1 does not contribute to the conversion in the case of ordinary components. Only the radiation 6 coupled out from the upper side 2 can contribute to the conversion (see FIG. 1).
- the laterally emerging from the semiconductor chip 1 radiation carries
- the deflecting element 7 is designed and arranged to be the part of the semiconductor chip 1
- Semiconductor chips 1 exits, deflect and in particular back to the primary radiation direction (forward direction) of the semiconductor chip 1 to direct. In this way, the radiation 6, which has emerged laterally from the semiconductor chip 1, can be applied to a subsequently arranged optical element
- Wavelength conversion element 5 (Wavelength conversion element 5) are directed and thus contributes to the luminous efficiency of the device.
- Deflection element 7 and semiconductor chip 1 can on a
- the deflecting element 7 is at least partially
- the deflecting element 7 has a first side surface 8A and a second side surface 8B, which are arranged opposite one another. First and second side surfaces 8A, 8B are arranged parallel to the side surface 4 of the semiconductor chip 1. First and second
- the deflecting element 7 also has an upper side 9. The top 9 is opposite to the
- Wavelength conversion element 5 is formed.
- the top 9 has a structuring.
- the top 9 is roughened.
- the upper side 9 is rougher than the side surfaces 8A, 8B and as a lower side of the deflecting element 7.
- the upper side 9 may be sandblasted, etched, brushed and / or ground.
- the deflecting element 7 and the semiconductor chip 1 are identical.
- deflection element 7 and semiconductor chip 1 are arranged directly adjacent to each other. In other words, the first
- Side surface 8A of the deflection element 7 directly adjoins the side surface of the semiconductor chip 1. In particular, there is no bonding material between deflection element 7 and semiconductor chip 1.
- the deflection element 7 is formed in one piece.
- Deflection element 7 may be formed only on a part of the side surface 4.
- the first side surface 8A only adjoins a part of the side surface 4 of the semiconductor chip 1. This is especially true for the case
- the radiation 6 exits predominantly only on a part of the side surface 4 of the semiconductor chip 1.
- the deflecting element 7 is formed like a frame.
- the deflecting element 7 is also in this embodiment in one piece
- the deflecting element 7 surrounds the semiconductor chip 1 completely.
- any emerging from the side surface 4 of the semiconductor chip 1 radiation 6 can thus be deflected by the deflection element 7.
- the deflecting element 7 is of high refractive design.
- the deflecting element 7 has a material whose refractive index is greater than the middle one
- the deflecting element 1O2, Te02 or InGaN as a material.
- Each of these materials has at a given wavelength (for example 400 nm) the
- emitted radiation 6 has a larger refractive index than the material of the semiconductor chip 1, for example GaN.
- the radiation 6 emitted from the side surface 4 enters the deflection element 7 in the first side surface 8A of the deflection element 7.
- the radiation 6 is refracted towards the incidence solder.
- the radiation 6 then impinges at a point 10 on the second side surface 8B of the
- the angle at which the radiation 6 strikes the point 10 of the second side surface 8B of the deflecting element 7 is with respect to a tangent normal through the point 10, greater than the critical angle of total reflection at the point 10. In other words, the radiation 6 is totally reflected at the point 10 where it meets the second side surface 8B.
- the radiation 6 is in the point 10 in the direction of
- the underside of the deflecting element 7 below (that is, for example, between the deflecting element 7 and the carrier 11) may further comprise a mirror element or a
- Mirror layer 100 may be arranged.
- the mirror layer 100 serves to on the underside of the deflection element. 7
- the emerging from the top 9 of the deflecting element 7 6 radiation can now, just like the radiation emitted from the top 2 of the semiconductor chip 1 radiation 6, on a
- Wavelength conversion element 5 is arranged opposite the upper side 2 of the semiconductor chip 1. Thus also emerging from the top 9 of the deflecting element 7
- Radiation 6 can hit the wavelength conversion element 5, the wavelength conversion element 5 must also hit
- a width or horizontal extent of the wavelength conversion element 5 must correspond approximately to the total width of the semiconductor chip 1 and deflecting element 7, as can be seen from FIG.
- Semiconductor chip 1 generated radiation 6 for conversion
- Semiconductor chip 1 emerging radiation are reduced or avoided altogether.
- the relevant component is therefore particularly efficient.
- FIG. 3 shows a side view of a component according to a further exemplary embodiment.
- the deflecting element 7 is not directly adjacent to the semiconductor chip 1.
- the first side surface 8A does not directly adjoin the
- connection layer 12 is arranged.
- the connection layer 12 serves to firmly or permanently connect the deflecting element 7 to the semiconductor chip 1.
- the connection layer 12 may be, for example, an adhesive layer which is formed between the deflection element 7 and the semiconductor chip 1.
- connection layer 12 comprises a material whose refractive index is less than or equal to the refractive index of the material of the semiconductor chip 1 (for example, GaN).
- the refractive index of the material is the
- Connecting layer 12 is smaller than the refractive index of the material of the deflecting element 7, so that the radiation 6 on entering the deflecting element 7 in turn passes from an optically thinner into a more optically denser medium, as was already the case in the component in Figure 2.
- the radiation from the semiconductor chip 1 When the radiation from the semiconductor chip 1 is transferred into the connection layer 12, the radiation is not broken off, or if at all, by the incidence solder because of the same refractive index of the materials or because of the smaller refractive index of the connection layer 12.
- the radiation from the connecting layer 12 into the deflecting element 7 When the radiation from the connecting layer 12 into the deflecting element 7 is transferred, the radiation 6 is broken again to the incidence solder during the transition into the optically denser medium. The angle at which the radiation 6 entering the deflecting element 7 then impinges on the second side face 8B in the point 10 becomes through the connecting layer 12 arranged between deflecting element 7 and semiconductor chip 1
- the degree of total reflection at point 10 on the second side surface 8B is thus increased, thereby increasing the efficiency of the device. Furthermore, it is possible that the reflection probability at the second side surface is increased.
- the aforementioned carrier is provided.
- the carrier 11 is used for mechanical
- Wavelength conversion element 5 is provided.
- Wavelength conversion element 5 is designed to at least partially convert the radiation 6 emitted by the semiconductor chip 1 and deflecting element 7 into a further radiation having a different wavelength from the emitted radiation 6.
- a further optical element for example a lens (not explicitly shown), which may be configured to focus the radiation emitted by deflecting element 7 and semiconductor chip 1.
- the semiconductor chip 1 and the deflecting element 7 are arranged on the carrier 11 or arranged relative to one another. The arrangement is such that the first side surface 8A of the deflecting element 7 faces the side surface 4 of the semiconductor chip 1.
- the semiconductor chip 1 can be introduced into the frame-shaped deflecting element 7 in order to form a positive connection between deflecting element 7 and
- connection layer 12 may, for example, prior to insertion or insertion of the
- Side surface 8A of the deflecting element 7 or on the side surface 4 of the semiconductor chip 1 are attached.
- connection layer 12 can also after the introduction of the semiconductor chip 1 in the
- Deflection element 7 between semiconductor chip 1 and deflecting element 7 are introduced.
- the deflecting element 7 is not formed frame-shaped, the deflecting element 7 with the aid of
- Connection layer 12 are attached to the semiconductor chip 1 by the connecting layer 12 on the first
- Wavelength conversion element 5 arranged so that it faces the upper side 9 of the deflecting element 7 and the upper side 2 of the semiconductor chip 1.
- a first and a second are calculated
- the first reflection probability 611 is calculated for an exemplary embodiment of an optoelectronic semiconductor component described in conjunction with FIG. 1 and the second reflection probability 622 for an exemplary embodiment described in conjunction with FIG. Accordingly, the first reflection probability 611 shows the probability of a deflection of laterally exiting radiation 6 on the side surface 4 of a semiconductor chip 1, in which no deflecting element 7 is provided.
- the second reflection probability 622 shows the probability of a deflection of laterally exiting radiation 6 on the side surface 4 of a semiconductor chip 1, in which no deflecting element 7 is provided.
- Reflection probability 622 shows the probability of deflection laterally emerging radiation 6 on the side surface 8B of a deflection element 7.
- the laterally emerging radiation 6 thus experiences only two Refractive index jumps, wherein the first refractive index jump occurs at the interface of the semiconductor chip 1 to the deflection element 7, which is formed by the side surface 4 of the semiconductor chip 1, and the second refractive index jump at the interface of the deflection element 7 to the surrounding air passing through the side surface 8B of the deflecting element 7 is formed. Furthermore, it was assumed for the calculation that the materials used are dielectrics in which there is essentially no absorption of the
- n 2.6
- Incidence angle is only up to a value of 23 °
- Both reflection probabilities 611, 622 exhibit the typical course of the reflection probability at the interfaces between two dielectrics.
- the reflection probability 622 is always greater than the first reflection probability 611.
- the first reflection probability 611 is small
- the higher second reflection probability 622 is probably explained as follows. In the case that no deflecting element 7 is present, laterally emerging radiation 7, which is at an angle of incidence which is smaller than the critical angle of the total reflection, on the
- the laterally emerging radiation 6 can again on the side surface
- the deflecting element 7 is formed of a material having a greater refractive index than the material of the semiconductor chip 1, one by the now lower
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- Led Device Packages (AREA)
- Led Devices (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201480015064.7A CN105190920B (zh) | 2013-03-14 | 2014-03-07 | 光电子半导体器件和用于制造光电子半导体器件的方法 |
| JP2015562045A JP6279623B2 (ja) | 2013-03-14 | 2014-03-07 | オプトエレクトロニクス半導体部品、およびオプトエレクトロニクス半導体部品の製造方法 |
| KR1020157026836A KR20150131075A (ko) | 2013-03-14 | 2014-03-07 | 광전 반도체 소자 및 광전 반도체 소자를 제조하기 위한 방법 |
| DE112014001243.2T DE112014001243A5 (de) | 2013-03-14 | 2014-03-07 | Optoelektronisches Halbleiterbauelement und Verfahren zur Herstellung eines optoelektronischen Halbleiterbauelements |
| US14/773,805 US9923130B2 (en) | 2013-03-14 | 2014-03-07 | Optoelectronic semiconductor device and method for producing an optoelectronic semiconductor device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013102621.4A DE102013102621A1 (de) | 2013-03-14 | 2013-03-14 | Optoelektronisches Halbleiterbauelement und Verfahren zur Herstellung eines optoelektronischen Halbleiterbauelements |
| DE102013102621.4 | 2013-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014139893A1 true WO2014139893A1 (de) | 2014-09-18 |
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ID=50236205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2014/054479 Ceased WO2014139893A1 (de) | 2013-03-14 | 2014-03-07 | Optoelektronisches halbleiterbauelement und verfahren zur herstellung eines optoelektronischen halbleiterbauelements |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9923130B2 (de) |
| JP (1) | JP6279623B2 (de) |
| KR (1) | KR20150131075A (de) |
| CN (1) | CN105190920B (de) |
| DE (2) | DE102013102621A1 (de) |
| WO (1) | WO2014139893A1 (de) |
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| US20060278886A1 (en) * | 2005-06-10 | 2006-12-14 | Sony Corporation | Light emitting diode, method of manufacturing light emitting diode, light emitting diode backlight, light emitting diode illuminating device, light emitting diode display, and electronic apparatus |
| WO2011015449A1 (de) | 2009-08-07 | 2011-02-10 | Osram Opto Semiconductors Gmbh | Verfahren zur herstellung eines optoelektronischen halbleiterbauelements und optoelektronisches halbleiterbauelement |
| US8148734B2 (en) | 2010-02-01 | 2012-04-03 | Lg Innotek Co., Ltd. | Light emitting device having a lateral passivation layer |
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| JP2002050800A (ja) | 2000-05-24 | 2002-02-15 | Nichia Chem Ind Ltd | 発光装置及びその形成方法 |
| US6630689B2 (en) * | 2001-05-09 | 2003-10-07 | Lumileds Lighting, U.S. Llc | Semiconductor LED flip-chip with high reflectivity dielectric coating on the mesa |
| CN101043059A (zh) | 2006-03-24 | 2007-09-26 | 中国科学院半导体研究所 | 采用衬底表面粗化技术的倒装结构发光二极管制作方法 |
| CN100568555C (zh) | 2006-09-05 | 2009-12-09 | 武汉迪源光电科技有限公司 | 粗化电极用于高亮度正装led芯片和垂直led芯片 |
| CN101212004A (zh) | 2006-12-31 | 2008-07-02 | 东莞高辉光电科技有限公司 | 一种高亮度固态发光组件的制造方法及发光组件 |
| JP5186800B2 (ja) * | 2007-04-28 | 2013-04-24 | 日亜化学工業株式会社 | 窒化物半導体発光素子、これを備える発光装置及び窒化物半導体発光素子の製造方法 |
| CN101226977A (zh) | 2007-12-18 | 2008-07-23 | 西安电子科技大学 | GaN基发光二极管表面粗化的处理方法 |
| DE102010028407B4 (de) | 2010-04-30 | 2021-01-14 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Optoelektronisches Bauelement und Verfahren zum Herstellen eines optoelektronischen Bauelements |
| CN101872824A (zh) * | 2010-06-07 | 2010-10-27 | 厦门市三安光电科技有限公司 | 侧面具有双反射层的氮化镓基倒装发光二极管及其制备方法 |
| JP5633477B2 (ja) * | 2010-08-27 | 2014-12-03 | 豊田合成株式会社 | 発光素子 |
| JP5864367B2 (ja) * | 2011-06-16 | 2016-02-17 | 日東電工株式会社 | 蛍光接着シート、蛍光体層付発光ダイオード素子、発光ダイオード装置およびそれらの製造方法 |
| JP5777952B2 (ja) * | 2011-06-28 | 2015-09-09 | シチズン電子株式会社 | 発光装置とその製造方法 |
-
2013
- 2013-03-14 DE DE102013102621.4A patent/DE102013102621A1/de not_active Withdrawn
-
2014
- 2014-03-07 WO PCT/EP2014/054479 patent/WO2014139893A1/de not_active Ceased
- 2014-03-07 DE DE112014001243.2T patent/DE112014001243A5/de not_active Withdrawn
- 2014-03-07 CN CN201480015064.7A patent/CN105190920B/zh not_active Expired - Fee Related
- 2014-03-07 JP JP2015562045A patent/JP6279623B2/ja not_active Expired - Fee Related
- 2014-03-07 US US14/773,805 patent/US9923130B2/en not_active Expired - Fee Related
- 2014-03-07 KR KR1020157026836A patent/KR20150131075A/ko not_active Withdrawn
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| WO2006117710A1 (en) * | 2005-04-29 | 2006-11-09 | Koninklijke Philips Electronics N.V. | Light source with glass housing |
| US20060278886A1 (en) * | 2005-06-10 | 2006-12-14 | Sony Corporation | Light emitting diode, method of manufacturing light emitting diode, light emitting diode backlight, light emitting diode illuminating device, light emitting diode display, and electronic apparatus |
| WO2011015449A1 (de) | 2009-08-07 | 2011-02-10 | Osram Opto Semiconductors Gmbh | Verfahren zur herstellung eines optoelektronischen halbleiterbauelements und optoelektronisches halbleiterbauelement |
| US8148734B2 (en) | 2010-02-01 | 2012-04-03 | Lg Innotek Co., Ltd. | Light emitting device having a lateral passivation layer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016513877A (ja) | 2016-05-16 |
| DE112014001243A5 (de) | 2016-01-14 |
| JP6279623B2 (ja) | 2018-02-14 |
| DE102013102621A1 (de) | 2014-09-18 |
| CN105190920A (zh) | 2015-12-23 |
| KR20150131075A (ko) | 2015-11-24 |
| US9923130B2 (en) | 2018-03-20 |
| US20160027976A1 (en) | 2016-01-28 |
| CN105190920B (zh) | 2018-04-03 |
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