IP Library Granted Patent US 7,524,087
Granted Patent B1
US 7,524,087 · App. 11/941,406 · Granted Apr 28, 2009

Optical device

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Quick Facts
Patent No.
US 7,524,087
App. No.
11/941,406
Granted
Apr 28, 2009
Kind
B1
Abstract

An exemplary embodiment of an optical device may include a lead frame with a plurality of leads and a reflector housing formed around the lead frame. The reflector housing includes a first end face and a second end face and a peripheral sidewall extending between the first end face and the second end face. The reflector housing includes a first pocket with a pocket opening in the first end face and a second pocket with a pocket opening in the second end face. At least one LED die is mounted in the first pocket of the reflector housing, and a light transmitting encapsulant is disposed in the first pocket and encapsulating the at least one LED die.

Claims (31)

1. An optical device comprising:

a lead frame with a plurality of leads;

a reflector housing formed around the lead frame, the reflector housing having a first end face and a second end face and a peripheral sidewall extending between the first end face and the second end face, the reflector housing having a first pocket with a pocket opening in the first end face and a second pocket with a pocket opening in the second end face;

at least one LED die mounted in the first pocket of the reflector housing;

a light transmitting encapsulant disposed in the first pocket and encapsulating the at least one LED die; and

wherein a plurality of lead receiving compartments are formed in the peripheral sidewall of the reflector housing.

2. The optical device of claim 1 , wherein the combined volume of the second pocket and the lead receiving compartments is at least 50% of the volume of the first pocket.

3. The optical device of claim 2 , said plurality of leads being J-shaped.

4. The optical device of claim 2 , said plurality of leads comprising six leads in two rows.

5. The optical device of claim 2 , said plurality of lead receiving compartments being J-shaped.

6. The optical device of claim 1 , wherein the plurality of lead receiving compartments define a plurality of ribs disposed between the plurality of lead receiving compartments.

7. The optical device of claim 1 , said at least one LED die comprising three LED dies.

8. The optical device of claim 7 , said three LED dies comprising at least two colors.

9. A display comprising a plurality of plastic leaded chip carrier LEDs, the plastic leaded chip carrier LEDs each comprising:

a lead frame with a plurality of leads;

a reflector housing formed around the lead frame, the reflector housing having a first end face and a second end face and a peripheral sidewall extending between the first end face and the second end face, the reflector housing having a cavity in the first end face, said peripheral sidewall having a plurality of lead receiving compartments formed therein;

at least one LED die mounted in the cavity of the reflector housing; and

a light transmitting encapsulant disposed in the cavity and encapsulating the at least one LED die.

10. The display of claim 9 , said reflector housing further comprising a second cavity in the second end face.

11. The display of claim 10 , wherein the plurality of lead receiving compartments define a plurality of ribs disposed between the plurality of lead receiving compartments.

12. The display of claim 11 , said plurality of leads being J-shaped.

13. The display of claim 9 , wherein said lead receiving compartments limit inward deflection of said plurality of leads.

14. The display of claim 9 , wherein said display comprises a stadium display.

15. An illumination system, comprising:

a reflector housing molded on a lead frame having a plurality of electrically conductive leads, the reflector housing having a first cavity and a second cavity on opposite sides of the reflector housing;

at least one LED die mounted in said first cavity and electrically connected to said plurality of electrically conductive leads; and

said reflector housing further having a first end face and a second end face and a peripheral sidewall extending between the first end face and the second end face, the reflector housing having a cavity in the first end face, said peripheral sidewall having a plurality of lead receiving compartments formed therein.

16. The illumination system of claim 15 , wherein said plurality of electrically conductive leads have a J-shape.

17. The illumination system of claim 15 , further comprising an encapsulant filling said first cavity around said at least one LED die.

18. The illumination system of claim 15 , further comprising a plurality of other reflector housings each having at least one LED die mounted, said reflector housing and said plurality of other reflector housings arranged in an array in a display.

19. The illumination system of claim 18 , said display comprising a stadium display.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 17, 2016
From: INTELLECTUAL DISCOVERY CO. LTD.
To: DOCUMENT SECURITY SYSTEMS, INC.
Reel/Frame 040744/0174 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 17, 2012
From: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.; AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.; AVAGO TECHNOLOGIES FIBER IP (SINGAPORE) PTE. LTD.
To: INTELLECTUAL DISCOVERY CO., LTD.
Reel/Frame 028972/0733 →