Light emitting devices and packages and related methods with electrode marks on leads
View Patent ↗Light emitting devices, packages and related methods are disclosed with electrical leads with one or more indicators. A package can include a leadframe that can include at least a first lead and a second lead. The first lead can include a first end for electrical connection to at least one light emitting device and a second end extending toward a first side of the package. The second lead can include a first end for electrical connection to at least one light emitting device and a second end extending toward a second side of the package. One or both of the second end of the first lead or the second end of the second lead can comprise an indicator serving as an identifier.
1. A light emitting device comprising:
a package for association with at least one light emitting device, wherein the package is devoid of identifying notches or electrode marks thereon, and wherein the package has a shape that is configured to optimize brightness of the at least one light emitting device for a footprint size of the package;
a leadframe comprising at least a first lead and a second lead, the first lead comprising a first end for electrically connecting to the at least one light emitting device and a second end extending beyond a first side of the package, the second lead comprising a first end for electrically connecting to the at least one light emitting device and a second end extending beyond a second side of the package; and
one or both of the second end of the first lead or the second end of the second lead extending across substantially an entire width of the first side or the second side of the package, respectively, and comprising an indicator serving as an identifier that is external from the package.
2. The light emitting device of claim 1 , wherein the first lead comprises a positive electrode terminal and the second lead comprises a negative electrode terminal.
3. The light emitting device of claim 1 , comprising at least one light emitting device electrically connected to the first and second leads.
4. The light emitting device of claim 1 , wherein the indicator comprises a cutout or notch in the second end of the first lead or the second end of the second lead.
5. The light emitting device of claim 4 , wherein the notch comprises a circular or semi-circular cutout on the second end of the first lead or the second end of the second lead.
6. The light emitting device of claim 1 , wherein the second end of the first lead or the second end of the second lead comprise different indicators.
7. The light emitting device of claim 1 , wherein a shape of the second end of the first lead is different than a shape of the second end of the second lead.
8. A light emitting device comprising:
a package for association with at least one light emitting device, wherein the package is devoid of identifying notches or electrode marks thereon, and wherein the package has a shape that is configured to optimize brightness of the at least one light emitting device for a footprint size of the package; and
a leadframe comprising at least a first lead and a second lead, the first lead comprising a first end for electrically connecting to the at least one light emitting device and a second end extending beyond and across substantially an entire width of a first side of the package, the second lead comprising a first end for electrically connecting to the at least one light emitting device and a second end extending beyond a second side of the package;
wherein a shape of a portion of the second end of the first lead that is external from the package is different than a shape of a portion of the second end of the second lead that is external from the package.
9. The light emitting device of claim 8 , wherein the second end of the first lead is on an opposing side of the package with respect to the second end of the second lead.
10. The light emitting device of claim 8 , wherein the second end of the first lead is on an adjacent side of the package with respect to the second end of the second lead.
11. The light emitting device of claim 8 , wherein the second end of the first lead is on a same side of the package with respect to the second end of the second lead.
12. The light emitting device of claim 8 , wherein the second end of the first lead has a first size and the second end of the second lead has a second size and wherein the first size is different than the second size.
13. The light emitting device of claim 8 , wherein at least one of the second end of the first lead or the second end of the second lead is divided into at least two sections.
14. The light emitting device of claim 8 , wherein at least one of the second end of the first lead or the second end of the second lead comprises one of a cutout, a notch, or an identifying mark.
15. A light emitting device comprising:
a package for association with at least one light emitting device; and
a leadframe comprising at least a first lead and a second lead, the first lead comprising a first end for electrically connecting to the at least one light emitting device and a second end extending beyond and across substantially an entire width of a first side of the package, the second lead comprising a first end for electrically connecting to the at least one light emitting device and a second end extending beyond a second side of the package;
wherein a portion of the second end of the first lead that is external from the package and a portion of the second end of the second lead that is external from the package are asymmetric.
16. The light emitting device of claim 15 wherein the second end of the second lead is divided into multiple prongs.
17. The light emitting device of claim 16 wherein the second end of the first lead is unitary.
18. The light emitting device of claim 15 wherein the package is devoid of identifying notches or electrode marks thereon.