Optoelectronic headlight, method for production of an optoelectronic headlight and a luminescence diode chip
View Patent ↗An optoelectronic headlight which emits electromagnetic radiation is specified, which has a luminescence diode chip with at least two spatial emission regions or which has at least two luminescence diode chips each having at least one spatial emission region. The headlight is suitable in particular for a front headlight for motor vehicles. The emission regions, in a plan view of a main extension plane associated with them, are shaped differently, are of different sizes and/or are not shaped rectangularly and are differently oriented. Particularly preferably, the emission regions can be driven independently of one another. Methods for production of an optoelectronic headlight and a luminescence diode chip are furthermore specified.
1. An optoelectronic headlight which emits electromagnetic radiation, comprising:
a luminescence diode chip having at least two emission regions, wherein the emission regions can be driven independently of one another and, in a plan view of a main extension plane associated with them, are shaped differently, are of different sizes and/or are not shaped rectangularly and are differently oriented, and
the at least two emission regions are spaced apart from one another.
2. The headlight as claimed in claim 1 ,
wherein the shape of at least one of the emission regions in a plan view of the main extension plane is not rectangular.
3. The headlight as claimed in claim 1 , wherein
the shape of at least one of the emission regions in a plan view of the main extension plane has a corner with an acute angle or with an obtuse angle.
4. The headlight as claimed in claim 1 , wherein
the shape of at least one of the emission regions in a plan view of the main extension plane has a bend with a reflex angle.
5. The headlight as claimed in claim 1 , wherein,
the shape of at least one of the emission regions in a plan view of the main extension plane has no axis of symmetry.
6. The headlight as claimed in claim 1 , wherein adjacent emission regions are at a distance of less than or equal to 100 μm from one another.
7. The headlight as claimed in claim 1 , wherein
the luminescence diode chip or the luminescence diode chips is or are arranged on a carrier body and together with the carrier body covered with an electrical insulation layer on which an electrical conductor track structure is formed, wherein the emission regions each have at least one electrical connection pad connected to the conductor track structure.
8. The headlight as claimed in claim 7 , wherein
in addition to the luminescence diode chip or the luminescence diode chips, an electronic component is arranged on the carrier body, which component has at least one electrical connection pad which is electrically conductively connected to at least one connection pad of the emission regions via the conductor track structure.
9. The headlight as claimed in claim 8 , wherein
the electronic component is a passive component and/or an integrated circuit.
10. The headlight as claimed in claim 8 , wherein the electronic component is suitable for SMD mounting.
11. The headlight as claimed in claim 7 , wherein the connection pad of at least one emission region is electrically conductively connected to a connection region of the carrier body via the conductor track structure.
12. The headlight as claimed in claim 7 , wherein the insulation layer contains a luminescence conversion material.
13. The headlight as claimed in claim 7 , wherein,
the luminescence diode chip or the luminescence diode chips is or are mounted on a chip carrier, wherein the chip carrier is applied on the carrier body.
14. A method for production of an optoelectronic headlight which emits electromagnetic radiation, comprising the steps of:
providing a carrier body and at least one luminescence diode chip which has at least two emission regions which can be driven independently of one another and which, in a plan view of a main extension plane associated with them, are shaped differently, are of different sizes and/or are differently oriented in the case of an identical type of shape, wherein each emission region has at least one electrical connection pad,
applying the luminescence diode chip on the carrier body,
applying an insulation layer to the luminescence diode chip and the carrier body,
forming cutouts in the insulation layer, for uncovering at least one respective electrical connection pad of the emission regions, and
applying electrically conductive material to the insulation layer in such a way that it is connected to the electrical connection pads, in order to form an electrical conductor track structure,
applying at least one electrical component on the carrier body before the insulation layer is applied,
applying the insulation layer in such a way that the electrical component is also covered,
forming cutouts in the insulation layer, in order to uncover the electrical connection pad of the component, and
applying electrically conductive material to the insulation layer in order to form an electrical conductor track structure, in such a way that the electrically conductive material is connected to the electrical connection pad of the component.
15. The headlight as claimed in claim 7 , wherein the at least two emission regions are formed by a semiconductor layer sequence each having an active zone suitable for emitting electromagnetic radiation.