IP Library Granted Patent US 7,350,935
Granted Patent B2
US 7,350,935 · App. 10/983,591 · Granted Apr 1, 2008

Backlight assembly

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,350,935
App. No.
10/983,591
Granted
Apr 1, 2008
Kind
B2
Abstract

A backlight assembly includes at least two light sources. Each of the at least two light sources includes a first end portion and a second end portion. The first end portions of the at least two light sources are adjacent to each other. The second end portions of the at least two light sources are adjacent to each other. The backlight assembly also includes a voltage supplier for applying a high voltage to the adjacent first end portions of the at least two light sources and a low voltage to the adjacent second end portions of the at least two light sources.

Claims (25)

1. A backlight assembly, comprising:

at least two bent tube light sources, each of which including a first end portion and a second end portion, respectively, the first end portions of the at least two light sources being adjacent to each other, and the second end portions of the at least two light sources being adjacent to each other; and

a voltage supplier for applying a high voltage to the adjacent first end portions of the at least two light sources and a low voltage to the adjacent second end portions of the at least two light sources, wherein the voltage supplier has a first inverter for generating the high voltage; a second inverter for generating the low voltage; at least first two wires, each of which connected to the first end of a respective one of the at least two light sources; at least second two wires, each of which connected to the second end of a respective one of the at least two light sources; a first connector connecting the at least first two wires to the first inverter to provide the high voltage; and a second connector connecting the at least second two wires to the second inverter to provide the low voltage.

2. The backlight assembly of claim 1 , wherein the voltage supplier has at least one inverter for generating the high voltage and the low voltage.

3. The backlight assembly of claim 2 , further comprising a printed circuit board on which the at least one inverter is mounted, wherein the at least one inverter is adjacent to first end of the light sources.

4. The backlight assembly of claim 2 , wherein the at least one inverter is provided with a first transformer for outputting the high voltage, and a second transformer for outputting the low voltage.

5. The backlight assembly of claim 4 , wherein the printed circuit board includes a first metal pattern connecting an output terminal of the first transformer to the first connector, and a second metal pattern connecting an output terminal of the second transformer to the second connector.

6. The backlight assembly according to claim 1 wherein each of the at least two light sources is bent in L-shape.

7. The backlight assembly of claim 6 , wherein long sides of the bent first and second light sources are opposite each other, and short sides of the bent first and second light sources are opposite each other.

8. The backlight assembly of claim 1 , wherein the first inverter includes a first transformer for outputting the high voltage, and the second inverter includes a second transformer for outputting the low voltage.

9. The backlight assembly of claim 1 , wherein the first inverter is disposed adjacent the first end portions of the light sources, and the second inverter is disposed adjacent the second end portions of the light sources.

10. The backlight assembly of claim 1 , further comprising a light-guiding plate disposed inside a periphery defined by the at least two bent tube light sources.

11. The backlight assembly of claim 10 , wherein the voltage supplier is disposed on a rear surface of the light-guiding plate.

12. A backlight assembly, comprising:

a first bent tube light source having a first end portion and a second end portion

a second bent tube light source having a third end portion and a fourth end portion, the third end portion being adjacent to the second end portion, and the fourth end portion being adjacent to the first end portion;

a voltage supplier for applying a high voltage to the adjacent first and fourth end portions and a low voltage to the adjacent second and third end portions, wherein the voltage supplier includes a first inverter for generating the high voltage and a second inverter for generating the low voltage.

a first wire connected to the first end portion;

a second wire connected to the second end portion;

a third wire connected to the third end portion;

a fourth wire connected to the fourth end portion

a first connector connecting the first and fourth wires to the first inverter to provide the high voltage; and

a second connector connecting the second and third wires to the second inverter to provide the low voltage.

13. The backlight assembly of claim 12 , wherein the first connector is adjacent to the first and fourth end portions, and the second connector is adjacent to the second and third end portions.

14. The backlight assembly of claim 12 , wherein the first inverter is adjacent to the first and fourth end portions, and the second inverter is adjacent to the second and third end portions.

Assignments (2)
CHANGE OF NAME Recorded Jun 19, 2008
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 021147/0009 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 9, 2004
From: KWON, SUN YOUNG
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 015982/0750 →