DISPLAY APPARATUS AND LIGHT SOURCE DEVICE USED IN THE DISPLAY APPARATUS

• US 20100296269A1
• Filed: 08/18/2009
• Published: 11/25/2010
• Est. Priority Date: 05/22/2009
• Status: Active Grant

• Current Assignee: Chunghwa Picture Tubes Limited
• Original Assignee: Chunghwa Picture Tubes Limited
• Inventors: Huang, I-Ting, Chang, Ching-Lung
• Granted Patent: US 8,118,443 B2
• Time in Patent Office: Days
• US Class Current: 362/97.3
• CPC Class Codes: G02F 1/133609 including means for improving the color mixing, e.g. white
• CPC Class Codes: G02F 1/133613 characterized by the sequence of light sources

Abstract

A light source device including light-emitting diodes (LEDs) and a carrier is provided. Chromaticities of some LEDs fall in a first area of a chromaticity coordinate diagram, while chromaticities of the other LEDs fall in a second area of the chromaticity coordinate diagram. The second area and the first area are point symmetric to a white center of the chromaticity coordinate diagram. A chromaticity coordinate value farthest from the white center in the first area is (X₁, Y₁), and a chromaticity coordinate value farthest from the white center in the second area is (X₂, Y₂), wherein 0.06≧|X₁−X₂|≧0.03 and 0.06≧|Y₁−Y₂|≧0.03. The LEDs are disposed on the carrier, and a chromaticity difference of any two adjacent LEDs in the chromaticity coordinate diagram is (ΔX, ΔY), wherein |ΔX|≦0.01 and |ΔY|≦0.01.

Claims

1. A light source device, comprising:

a plurality of light-emitting diodes (LEDs), chromaticities of a part of the LEDs falling in a first area of a chromaticity coordinate diagram, while chromaticities of the other LEDs falling in a second area of the chromaticity coordinate diagram, the second area and the first area being point symmetric to a first white center of the chromaticity coordinate diagram, a chromaticity coordinate value farthest from the white center in the first area being (X₁, Y₁) and a second chromaticity coordinate value farthest from the white center in the second area being (X₂, Y₂), wherein 0.06≧

|X₁−

X₂|≧

0.03 and 0.06≧

|Y₁−

Y₂|≧

0.03; and

a carrier, the LEDs being disposed on the carrier, and a chromaticity difference of any two adjacent LEDs in the chromaticity coordinate diagram being (Δ

X, Δ

Y), wherein |Δ

X|≦

0.01 and |Δ

Y|≦

0.01.

2. The light source device as claimed in claim 1, wherein the carrier is a printed circuit board (PCB) or a metal board.

3. The light source device as claimed in claim 1, wherein the carrier is a bar-shape carrier.

4. The light source device as claimed in claim 3, wherein the LEDs are arranged in a line.

5. The light source device as claimed in claim 1, wherein the LEDs are arranged in an array.

6. A display apparatus, comprising:

a light source device as claimed in claim 1;

a display panel, having a display area and a non-display area, wherein the non-display area surrounds the display area; and

a substrate, having a light-incident surface and a light-outlet surface, wherein the light-incident surface is disposed opposite to the light source device, and the light-outlet surface is disposed opposite to the display panel.

7. The display apparatus as claimed in claim 6, wherein the light-incident surface is adjoined to the light-outlet surface.

8. The display apparatus as claimed in claim 7, wherein a first space A is configured between the light source device and an edge of the display area, and a second space P is configured between any two adjacent LEDs, wherein 0.5≦

A/P≦

1.

9. The display apparatus as claimed in claim 7, wherein the substrate is a light guide plate or a diffuser plate.

10. The display apparatus as claimed in claim 7, wherein the carrier of the light source device is a bar-shape carrier.

11. The display apparatus as claimed in claim 10, wherein the LEDs of the light source device are arranged in a line.

12. The display apparatus as claimed in claim 6, wherein the light-incident surface is disposed opposite to the light-outlet surface.

13. The display apparatus as claimed in claim 12, wherein the LEDs of the light source device are arranged in an array.

14. The display apparatus as claimed in claim 12, wherein the substrate is a diffuser plate or a light guide plate.

15. The display apparatus as claimed in claim 6, wherein the carrier of the light source device is a PCB or a metal board.

16. The display apparatus as claimed in claim 6, further comprising a plurality of optical films disposed above the light-outlet surface.