Semiconductor light emitting device package with cover with flexible portion
View Patent ↗A packaged light emitting device includes a frame, a cover, and a light emitting device. The light emitting device is disposed between the cover and the frame. A portion of the cover is flexible and a portion of the cover is rigid. The cover includes a flange and is attached to the frame by positioning the rigid portion of the cover to maintain the flange in a nest formed in the frame. In some embodiments, a stake is disposed over the sunken surface that forms the nest in the frame, and the cover is held in place by positioning the flange between the sunken surface and the stake. In some embodiments, the flange is the same material as the flexible portion and the rigid portion is a ring that extends into the flange.
1. A structure comprising:
a frame having a sunken surface that forms a nest;
a cover comprising a flange;
a cavity formed between the cover and the frame; and
a light emitting device disposed between the cover and the frame; wherein:
the light emitting device is disposed in a first portion of the cavity and a quantity of soft, solid material is disposed in a second portion of the cavity;
the flange is positioned in the nest to connect the cover to the frame;
the cover comprises a flexible portion and a rigid portion; and
the rigid portion is positioned to maintain the flange in the nest.
2. The structure of claim 1 wherein the frame further comprises a stake disposed over the sunken surface, wherein the flange is disposed between the sunken surface and the stake.
3. The structure of claim 1 wherein the light emitting device is a semiconductor light emitting device.
4. The structure of claim 1 wherein the rigid portion is a rigid member disposed within the flexible portion of the cover.
5. The structure of claim 1 wherein the rigid portion is a rigid member disposed on a surface of the flexible portion of the cover.
6. The structure of claim 1 wherein the flexible portion comprises silicone.
7. The structure of claim 1 wherein:
the flange is formed from the same material as the flexible portion; and
the rigid portion is a ring disposed within the flange.
8. The structure of claim 1 wherein the rigid portion comprises plastic.
9. The structure of claim 1 wherein the rigid portion comprises metal.
10. The structure of claim 1 wherein the cover has a dome shape and the rigid portion is a ring disposed at a bottom of the dome.
11. The structure of claim 1 wherein the soft, solid material is softer than the flexible portion of the cover.
12. The structure of claim 1 further comprising leads electrically connected to the light emitting device and physically connected to the frame.
13. The structure of claim 1 wherein the flexible portion contacts the frame to form a sealed compartment between the cover and the frame.
14. A method comprising:
providing a frame having a surface and a stake extending vertically from the surface;
attaching a light emitting device to the frame;
providing a cover having a flange, wherein a portion of the cover is flexible and a portion of the cover is rigid;
positioning the cover such that an edge of the flange is disposed adjacent the stake; and
folding at least a portion of the stake over the flange.
15. The method of claim 14 wherein the flange is formed of the same material as the flexible portion and the rigid portion is a ring disposed within the flange.
16. The method of claim 14 further comprising positioning the rigid member to maintain the flange between the stake and the surface.
17. A method comprising:
forming a rigid ring connected to a sheet by a strip;
forming a flexible cover attached to the ring;
attaching a semiconductor light emitting device to a frame;
positioning the cover over the frame;
separating the cover from the sheet by breaking the strip;
attaching the cover to the frame by disposing the cover in a nest in the frame and positioning the rigid ring to maintain the cover in the nest.
18. The method of claim 17 further comprising folding a stake attached to the frame over a flange on the cover.