Light generating device and display device having the same

• US 20060120077A1
• Filed: 09/12/2005
• Published: 06/08/2006
• Est. Priority Date: 12/02/2004
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Yoon, Ju-Young, Park, Se-Ki, Kim, Gi-Cherl, Lee, Sang-Yu, Song, Chun-Ho, Lee, Jong-Seo, Lee, Sang-Gil, Kang, Seock-Hwan
• Application Number:
  US11/223,026
• Publication Number:
  US 20060120077A1
• Time in Patent Office: Days
• US Class Current: 362/231
• CPC Class Codes: G02F 1/133603 with LEDs

Abstract

A light generating device including a circuit board, and a plurality of light source groups provided on the circuit board, each of the light source groups comprising three main light sources and at least one sub light source emitting light having a peak wavelength that is different from a peak wavelength of each of the main light sources.

Claims

1. A light generating device, comprising:

a circuit board; and

a plurality of light source groups provided on the circuit board, each of the light source groups comprising three main light sources and at least one sub light source emitting light having a peak wavelength that is different from a peak wavelength of each of the main light sources.

2. The light generating device of claim 1, wherein the main light sources include a red light emitting diode, a green light emitting diode and a blue light emitting diode.

3. The light generating device of claim 2, wherein the red light emitting diode has a peak wavelength of between approximately 620 nm and 650 nm, the green light emitting diode has a peak wavelength of between approximately 510 nm and 530 nm, and the blue light emitting diode has a peak wavelength of between approximately 450 nm and 470 nm.

4. The light generating device of claim 3, wherein the sub light source includes a first sub light emitting diode having a peak wavelength that is greater than the peak wavelength of the red light emitting diode.

5. The light generating device of claim 4, wherein the peak wavelength of the first sub light emitting diode is between approximately 640 nm and 670 nm.

6. The light generating device of claim 4, wherein the sub light source further comprises a second sub light emitting diode having a peak wavelength that is greater than the peak wavelength of the green light emitting diode.

7. The light generating device of claim 6, wherein the peak wavelength of the second sub light emitting diode between approximately 530 nm and 550 nm.

8. The light generating device of claim 6, wherein the sub light source further comprises a third sub light emitting diode having a peak wavelength that is less than the peak wavelength of the blue light emitting diode.

9. The light generating device of claim 8, wherein the peak wavelength of the third sub LED between approximately 450 nm and 470 nm.

12. The display device of claim 1, wherein the red light emitting diode has a peak wavelength of between approximately 620 nm and 650 nm, the green light emitting diode has a peak wavelength of between approximately 510 nm and 530 nm, and the blue light emitting diode has a peak wavelength of between approximately 450 nm and 470 nm.

10. A display device, comprising:

a receiving container comprising a bottom part and a lateral part;

a plurality of light generating devices provided on the bottom part to generate light, each of the light generating devices comprising;

a circuit board; and

light source groups provided on the circuit board, each of the light source groups comprises three main light sources and at least one sub light source emitting light having a peak wavelength that is different from a peak wavelength of each of the main light sources; and

a display panel displaying an image using the light provided from the light generating devices.

11. The display device of claim 10, wherein the main light sources include a red light emitting diode, a green light emitting diode and a blue light emitting diode.

13. The display device of claim 11, wherein the sub light source comprises a first sub LED having a peak wavelength greater than the peak wavelength of the red light emitting diode.

14. The device of claim 13, wherein the peak wavelength of the first sub light emitting diode is between approximately 640 nm and 670 nm.

15. The device of claim 13, wherein the sub light source further comprises a second sub light emitting diode having a peak wavelength that is greater than the peak wavelength of the green light emitting diode.

16. The device of claim 15, wherein the peak wavelength of the second sub LED is between approximately 530 nm and 550 nm.

17. The device of claim 15, wherein the sub light source further comprises a third sub light emitting diode having a peak wavelength that is less than the peak wavelength of the blue light emitting diode.

18. The device of claim 17, wherein the peak wavelength of the third sub light emitting diode is between approximately 450 nm and 470 nm.

19. The device of claim 10, wherein the light source groups are provided along a line.

20. The device of claim 10, wherein the light generating devices are positioned apart from each other and substantially parallel with each other.

21. The device of claim 10, further comprising:

a power supply device providing the circuit board with a driving voltage to drive the light generating device.

22. The device of claim 10, further comprising:

a light guiding member provided over the light generating devices to combine the light generated from the light generating device.

23. The device of claim 22, further comprising:

an optical member provided over the light guiding member.