Liquid crystal display device

Abstract

A liquid crystal display (LCD) device includes a backlight assembly with a light source between a liquid crystal panel and a bottom. A heat sink is disposed on the bottom case to irradiate heat out of the liquid crystal display device. The heat sink may be located where the heat is accumulated by thermal convection, or near the top of the LCD device.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The system may be better understood with reference to the following drawings and description. Non-limiting and non-exhaustive embodiments are described with reference to the following drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. In the figures, like referenced numerals designate corresponding parts throughout the different views.

FIG. 1 is an exploded perspective view illustrating an LCD device using an LED according to the related art;

FIG. 2 is a cross-sectional view taken along a line II-II of FIG. 1 according to the related art;

FIG. 3 is an exploded perspective view illustrating an LCD device using an LED according to an exemplary embodiment;

FIG. 4 is a cross-sectional view taken along a line IV-IV of FIG. 3 of an exemplary embodiment; and

FIG. 5 is an exploded perspective view illustrating an LCD device using a lamp according to another exemplary embodiment.

Claims

1. A liquid crystal display device comprising: a backlight assembly disposed adjacent a liquid crystal panel and a bottom case, the backlight assembly including a light source; anda heat sink including a first part and a second part, wherein the first part is disposed adjacent to a top portion of the liquid crystal display device, and the second part is disposed adjacent to an upper portion of the liquid crystal display device.

2. The device according to claim 1, further comprising a driving circuit operating the liquid crystal panel, the driving circuit disposed adjacent to a lower portion of the liquid crystal display device.

3. The device according to claim 2, wherein the driving circuit includes a source printed circuit board (PCB) and a control printed circuit board (PCB).

4. The device according to claim 1, wherein the second part contacts a rear surface of the bottom case.

5. The device according to claim 1, wherein the heat sink comprises at least one of graphite or aluminum.

6. The device according to claim 1, wherein the first part of the heat sink comprises at least one of a copper pipe or an aluminum pipe.

7. The device according to claim 1, wherein the light source comprises at least one light emitting diode (LED).

8. The device according to claim 7, further comprising a base printed circuit board (PCB) on which the at least one LED is placed, the base PCB contacting the bottom case.

9. The device according to claim 1, wherein the light source comprises a lamp.

10. The device according to claim 1, wherein the backlight assembly is disposed between the liquid crystal panel and the bottom case.

11. A liquid crystal display device comprising: a backlight assembly disposed between a liquid crystal panel and a bottom case, the backlight assembly including a light source;a heat sink configured to irradiate heat produced at the light source, wherein the heat is irradiated outside the liquid crystal display device; anda driving circuit configured to operate the liquid crystal panel, the driving circuit disposed at a lower portion of the liquid crystal display device.

12. The device according to claim 11, wherein the heat sink includes a first part and a second part, wherein the first part is disposed at a top portion of the liquid crystal display device, and the second part is disposed at an upper portion of the liquid crystal display device.

13. The device according to claim 12, wherein the lower portion and the top portion of the liquid crystal display device are established when the liquid crystal display device is in a standing state.

14. The device according to claim 11, wherein the driving circuit comprises at least one of a source printed circuit board (PCB) or a control PCB.

15. The device according to claim 12, wherein the second part is coupled with a rear surface of the bottom case.

16. The device according to claim 11, wherein the heat sink comprises at least one of graphite or aluminum.

17. The device according to claim 12, wherein the first part comprises at least one of a copper pipe or an aluminum pipe.

18. The device according to claim 11, wherein the light source comprises at least one LED.

19. The device according to claim 18, further comprising a base PCB coupled with the at least one LED, the base PCB in contact with the bottom case.

20. The device according to claim 11, wherein the light source comprises at least one lamp.

21. A liquid crystal display device comprising: a backlight assembly coupled with a liquid crystal panel and a bottom case, wherein the backlight assembly includes at least one light source;a heat sink disposed on the liquid crystal display device where heat produced at the light source is accumulated by a thermal convection; anda driving circuit disposed on the liquid crystal display device at a position different from where the heat is accumulated and the heat sink is disposed.

22. The device according to claim 21, wherein the driving circuit includes a source printed circuit board (PCB) and a control PCB.

23. A liquid crystal display device comprising: a liquid crystal panel;a bottom case coupled with the liquid crystal panel;a backlight assembly coupled with the liquid crystal panel and the bottom case, wherein the backlight assembly comprises a light source; anda heat sink disposed on an upper portion of the bottom case, wherein the heat sink is coupled with a top of the bottom case and a back of the bottom case.

24. A display device comprising: a display panel;a backlight assembly coupled with the display panel and including a light source for the display panel;a bottom case coupled with the backlight assembly;a heat sink coupled with the bottom case, wherein the heat sink is disposed on an area of the bottom case where thermal convection causes an accumulation of heat; anda driving circuit configured to drive the display panel and disposed on an area of the bottom case opposite from the heat sink.