1. A packaged light emitting device comprising:
a substrate having an upper surface;
a solid state light emitting device on the substrate;
a transparent dam on the substrate defining a cavity above the solid state light emitting device, the transparent dam; and
an encapsulant within the cavity.
2. The packaged light emitting device of claim 1, further comprising a die attach pad on the upper surface of the substrate, wherein the solid state lighting device is on the die attach pad.
3. The packaged light emitting device of claim 1, wherein the transparent dam has a first index of refraction and the encapsulant has a second index of refraction that is different from the first index of refraction.
4. The packaged light emitting device of claim 3, wherein the second index of refraction is higher than the first index of refraction.
5. The packaged light emitting device of claim 3, wherein the encapsulant comprises a first encapsulant, the method further comprising:
a meniscus control feature on the upper surface of the substrate and surrounding the transparent dam; and
a second encapsulant on the substrate within a region defined by the third meniscus control feature, the third encapsulant covering the transparent dam and the first encapsulant and having a third index of refraction that is different from the first index of refraction or the second index of refraction.
6. The packaged light emitting device of claim 5, wherein the third index of refraction is higher than the first index of refraction.
7. The packaged light emitting device of claim 5, wherein the third index of refraction is higher than the second index of refraction.
8. packaged light emitting device of claim 5, wherein the third index of refraction is higher than the first index of refraction and is the same as the second index of refraction.
9. The packaged light emitting device of claim 3, wherein the second encapsulant comprises silicone gel andor epoxy resin.
10. The packaged light emitting device of claim 3, wherein the second encapsulant comprises a second wavelength conversion material.
11. The packaged light emitting device of claim 1, wherein the transparent dam is toroidal.
12. The packaged light emitting device of claim 1, wherein the transparent dam comprises cured encapsulant material.
13. The packaged light emitting device of claim 1, wherein the transparent dam andor the encapsulant comprises silicone gel andor epoxy resin.
14. The packaged light emitting device of claim 1, wherein the encapsulant comprises a first wavelength conversion material and the transparent dam comprises a second wavelength conversion material.
15. A method of forming a packaged light emitting device, comprising:
forming a transparent dam on the upper surface of the substrate that defines a cavity above a die attach region on the upper surface of the substrate;
mounting a solid state light emitting device on the die attach region in the encapsulant region; and
dispensing an encapsulant material over the solid state lighting device within the cavity defined by the transparent dam.
16. The method of claim 15, further comprising a die attach pad in the die attach region, wherein the solid state lighting device is on the die attach pad.
17. The method of claim 15, wherein the transparent dam has a first index of refraction and the encapsulant has a second index of refraction that is different from the first index of refraction.
18. The method of claim 17, wherein the second index of refraction is higher than the first index of refraction.
19. The method of claim 17, further comprising:
forming a meniscus control feature on the substrate surrounding the transparent dam;
dispensing a second encapsulant material within a region defined by the third meniscus control feature, wherein the second encapsulant material has a third index of refraction that is different from the first index of refraction or the second index of refraction; and
curing the second encapsulant material.
20. The method of claim 19, wherein the third index of refraction is higher than the first index of refraction.
21. The method of claim 19, wherein the third index of refraction is higher than the second index of refraction.
22. The method of claim 19, wherein the third index of refraction is higher than the first index of refraction and is the same as the second index of refraction.
23. A packaged light emitting device comprising:
a substrate having an upper surface;
a die attach pad on the upper surface of the substrate, the die attach pad configured to receive a solid state light emitting device;
a first meniscus control feature on the substrate, the first meniscus control feature surrounding the die attach pad and configured to limit the flow of a liquid encapsulant material, and
a second meniscus control feature on the substrate, the second meniscus control feature surrounding the first meniscus control feature and configured to limit the flow of a liquid encapsulant material;
wherein the first meniscus control feature and the second meniscus control feature define an encapsulant region of the upper surface of the substrate surrounding the first encapsulant region;
a solid state light emitting device on the die attach pad;
a first encapsulant on the substrate within the encapsulant region defined by the first meniscus control feature and the second meniscus control feature, the first encapsulant having a first index of refraction and comprising a wavelength conversion material and defining a cavity above the solid state light emitting device;
a second encapsulant within the cavity, the second encapsulant having a second index of refraction that is different from the first index of refraction.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for packaging an antenna in a communication device, comprising:
coupling an antenna to a printed circuit board such that said antenna is mechanically supported thereby;
positioning a hollow shaft of a control knob over said antenna and at least a portion of said printed circuit board such that said antenna is embedded within said control knob; and
mechanically securing said control knob to a housing of said communication device.
2. The method according to claim 1, further comprising providing a watertight seal between said control knob and said housing.
3. The method according to claim 1, wherein said control knob is mechanically secured to said housing such that it can move in a radial direction and a vertical direction relative to said housing.
4. The method according to claim 1, wherein said antenna is mechanically supported by said printed circuit board such that said hollow shaft is able to move freely thereover without coming in contact therewith.
5. The method according to claim 1, further comprising circumscribing said hollow shaft with a resilient member for returning said control knob to a rest position after being depressed.
6. The method according to claim 1, further comprising disposing a switch adjacent to an end portion of said hollow shaft such that said hollow shaft can actuate said switch in response to a radial movement or a vertical movement of said control knob.
7. A control knob assembly, comprising:
a printed circuit board;
an antenna mechanically supported by said printed circuit board; and
a hollow shaft disposed over said antenna and at least a portion of said printed circuit board such that said antenna is embedded within said control knob assembly.
8. The control knob assembly of claim 7, further comprising a support structure to which said control knob and said printed circuit board are mechanically secured.
9. The control knob assembly of claim 8, wherein said control knob is mechanically secured to said support structure such that it can move in a radial direction and a vertical direction relative to said support structure.
10. The control knob assembly of claim 8, further comprising a gasket circumscribing said hollow shaft for providing a watertight seal between said control knob and a support structure.
11. The control knob assembly of claim 7, wherein said antenna is mechanically supported by said printed circuit board such that said hollow shaft is able to move freely thereover without coming in contact therewith.
12. The control knob assembly of claim 7, further comprising a resilient member circumscribing said hollow shaft for returning said control knob assembly to a rest position after being depressed.
13. The control knob assembly of claim 7, further comprising a switch disposed adjacent to an end portion of said hollow shaft such that said hollow shaft can actuate said switch in response to a radial movement or a vertical movement of said control knob assembly.
14. A communication device, comprising:
a housing;
a printed circuit board coupled to said housing;
an antenna mechanically coupled to and supported by said printed circuit board; and
a control knob assembly having a hollow shaft disposed over said antenna and at least a portion of said printed circuit board such that said antenna is embedded within said control knob assembly.
15. The communication device of claim 14, wherein said control knob assembly is mechanically coupled to said housing such that it can move in a radial direction and a vertical direction relative to said support structure.
16. The communication device of claim 14, further comprising a gasket circumscribing said hollow shaft for providing a watertight seal between said control knob assembly and said housing.
17. The communication device of claim 14, wherein said antenna is mechanically supported by said printed circuit board such that said hollow shaft is able to move freely thereover without coming in contact therewith.
18. The communication device of claim 14, further comprising a resilient member circumscribing said hollow shaft for returning said control knob assembly to a rest position after being depressed.
19. The communication device of claim 14, further comprising a switch disposed adjacent to an end portion of said hollow shaft such that said hollow shaft can actuate said switch in response to a radial movement or a vertical movement of said control knob assembly.
20. A communication device, comprising:
a housing containing at least one of a radio transmitter and a radio receiver;
a control knob disposed on an exterior of said housing and configured to control at least one function of said communication device in response to at least one of a rotation movement and an axial movement of said control knob;
an antenna disposed within said control knob coupled to at least one of said radio transmitter and said radio receiver.
21. The communication device according to claim 20, wherein said control knob is coupled to at least one control shaft.
22. The communication device according to claim 21, wherein said control knob is configured to cause said control shaft to actuate at least one electronic component of said communication device in response to at least one of said rotation movement and said axial movement.
23. The communication device according to claim 22, wherein said electronic component is a switch.
24. The communication device according to claim 20 wherein said antenna is coupled to a GPS receiver.