Electroluminescent device and method for producing an electroluminescent device
View Patent ↗An electroluminescent device includes an inorganic luminescence diode chip having a radiation exit area, a plurality of contact webs provided to spread current and arranged on the radiation exit area, and a contact structure arranged outside the radiation exit area and electrically conductively connected to contact webs.
1. An electroluminescent device comprising:
an inorganic luminescence diode chip having a radiation exit area,
a plurality of contact webs provided to spread current and arranged on the radiation exit area, and
a contact structure arranged outside the radiation exit area on a web and electrically conductively connected to contact webs, wherein the web is arranged alongside the luminescence diode chip.
2. The electroluminescent device as claimed in claim 1 , further comprising a first contact area connected to the contact structure by a conductive area.
3. The electroluminescent device as claimed in claim 1 , wherein the further contact structure is arranged outside the radiation exit area and in a manner lying opposite the contact structure and is electrically conductively connected to the contact webs.
4. The electroluminescent device as claimed in claim 3 , further comprising a second contact area connected to the further contact structure by a further conductive area.
5. The electroluminescent device as claimed in claim 1 , wherein the contact webs have a width between 10 μm and 30 μm inclusive.
6. The electroluminescent device as claimed in claim 1 , wherein the contact webs cover less than 20% of the radiation exit area.
7. The electroluminescent device as claimed in claim 1 , wherein the contact webs are a patterned indium tin oxide layer.
8. The electroluminescent device as claimed in claim 1 , wherein the luminescence diode chip has a contact layer on a side lying opposite the radiation exit area, said contact layer being connected to a third contact area.
9. The electroluminescent device as claimed in claim 1 , further comprising first, second and/or third contact areas applied on a carrier.
10. The electroluminescent device as claimed in claim 9 , wherein a connecting layer is applied between the contact layer and the carrier.
11. The electroluminescent device as claimed in claim 1 , wherein at least one side edge of the radiation exit area has a length of 100 μm or more.
12. The electroluminescent device as claimed in claim 9 , wherein the carrier is a printed circuit or a ceramic lamina.
13. The electroluminescent device as claimed in claim 10 , wherein the connecting layer is a solder layer.
14. A method for producing an electroluminescent device comprising:
providing a luminescence diode chip having a radiation exit area,
forming a plurality of contact webs that spread current and are arranged on the radiation exit area, and
forming a contact structure arranged outside the radiation exit area on a web and electrically conductively connected to contact webs, wherein the web is arranged alongside the luminescence diode chip.
15. An electroluminescent device comprising:
an inorganic luminescence diode chip having a radiation exit area,
a plurality of contact webs provided to spread current and arranged on the radiation exit area, and
a contact structure arranged outside the radiation exit area on a web and electrically conductively connected to contact webs, wherein the web consists of an electrical insulating material.
16. The electroluminescent device as claimed in claim 15 , wherein the electrical insulating material is benzocyclobutene.