Display device and method of manufacturing thereof

• US 20060103774A1
• Filed: 08/17/2005
• Published: 05/18/2006
• Est. Priority Date: 11/16/2004
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Chung, Du-Hwan, Han, Sang-Sun
• Granted Patent: US 7,570,341 B2
• Time in Patent Office: Days
• US Class Current: 349/58
• CPC Class Codes: G02F 1/133385 with cooling means, e.g. fans
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: G02F 2201/36 Airflow channels, e.g. constructional arrangements facilitating the flow of air
• CPC Class Codes: G02F 2201/465 Snap -fit
• CPC Class Codes: H05K 7/20963 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20972 takes precedence

Abstract

A display device includes a display panel displaying an image, a backlight assembly providing the display panel with light, a receiving container, and a light-blocking member. The backlight assembly includes a light source, an optical sheet disposed over the light source and a light-reflecting sheet disposed under the light source. The receiving container includes a bottom plate having an opening portion, and defines a receiving space for receiving the display panel and the backlight assembly. The light-blocking member is disposed at a backside surface of the light-reflecting sheet. Therefore, heat generated from the light source is easily dissipated through the opening to enhance display quality.

Claims

1. A display device comprising:

a display panel that displays an image on a first face of the display panel;

a backlight assembly that provides the display panel with light, the backlight assembly including a light source, an optical sheet disposed adjacent a first area of the light source and a light-reflecting sheet disposed adjacent a second area of the light source, wherein the light-reflecting sheet includes a first surface facing the light source and a second surface opposite the first surface;

a receiving container including a bottom plate having an opening portion arranged for dissipating heat from the light source, and a sidewall extended from edge portions of the bottom plate defining a receiving space for receiving the display panel and the backlight assembly; and

a light-blocking member disposed at the second surface of the light-reflecting sheet.

2. The display device of claim 1, wherein the light-blocking member is disposed at a region corresponding to the opening portion of the receiving container.

3. The display device of claim 2, wherein the light-blocking member is larger than the opening portion.

4. The display device of claim 2, wherein the light-blocking member has a thickness within a range from about 25 μ

m to about 188 μ

m.

5. The display device of claim 2, wherein the light-blocking member comprises polyester having carbon.

6. The display device of claim 5, wherein the light-blocking member is attached to the second surface of the light-reflecting sheet by an adhesive.

7. The display device of claim 2, wherein the light-blocking member comprises polyethylene terephthalate.

8. The display device of claim 7, wherein the light-blocking member is attached to the second surface of the light-reflecting sheet by an adhesive.

9. The display device of claim 2, wherein the light source includes a lamp.

10. The display device of claim 9, further comprising a light guide plate guiding light generated by the lamp.

11. The display device of claim 9, wherein the light source includes a plurality of lamps arranged in parallel with each other and disposed adjacent a second face of the display panel.

12. The display device of claim 11, where each of the lamps has a U-shape.

13. The display device of claim 2, wherein the light source includes a light-emitting diode.

14. The display device of claim 2, further comprising an inverter that applies a driving signal to the light source.

15. The display device of claim 14, wherein the inverter is disposed adjacent a region corresponding to the opening portion.

16. The display device of claim 14, wherein a first side of the receiving container faces the receiving space, and wherein the receiving container comprises a protruding portion formed at a second side of the receiving container, and the inverter is combined with the receiving container through the protruding portion.

17. The display device of claim 16, wherein the protruding portion has a hole, and the inverter is combined with the receiving container through an insertion of a screw through the inverter and into the hole.

18. The display device of claim 17, wherein the protruding portion further comprises a protrusion for guiding the inverter.

19. A display device comprising:

a display panel for displaying an image;

a backlight assembly including a light source and a light-reflecting sheet;

a receiving container for defining a receiving space for receiving the backlight assembly, the receiving container having a bottom plate; and

,

wherein at least the bottom plate includes means for dissipating heat from the light source away from the display panel.

20. The display device of claim 19, wherein the means for dissipating heat includes at least one opening portion formed in a bottom plate of the receiving container.

21. The display device of claim 20, further comprising a board positioned in a region corresponding to the at least one opening portion in the bottom plate;

wherein the board is spaced apart from the bottom plate for enhancing heat dissipation due to convection.

22. The display device of claim 21, wherein the board is an inverter for applying a driving signal to the light source, and wherein the inverter is spaced apart from and attached to the bottom plate by a protruding portion extending from the bottom plate.

23. The display device of claim 20, further comprising a light reflecting sheet positioned between the light source and the receiving container, wherein the means for dissipating heat further comprising at least one light blocking member positioned on a surface of the light reflecting sheet, wherein the at least one light blocking member faces the at least one opening portion.

24. A method for protecting a display panel from deterioration due to heat from a light source, the method comprising:

providing a light source within a receiving container;

providing an opening portion in the receiving container, wherein heat from the light source passes through the opening portion;

placing a board outside the receiving container and adjacent the opening portion;

spacing the board from a bottom plate of the receiving container; and

,

convecting heat away from the display panel through a space created between the board and the bottom plate.

25. The method of claim 24, further comprising arranging a light-reflecting sheet between the light source and the receiving container;

and,

affixing a light-blocking member on the light reflecting sheet and adjacent the opening portion.

26. The method of claim 24, wherein placing a board outside the receiving container comprises placing an inverter outside the receiving container, and wherein spacing the board from the bottom plate of the receiving container comprises attaching the inverter to a protruding portion extending from the bottom plate.