LIQUID CRYSTAL DISPLAY DEVICE

• US 20130070189A1
• Filed: 09/29/2011
• Published: 03/21/2013
• Est. Priority Date: 09/20/2011
• Status: Abandoned Application

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Li, Quan
• Application Number:
  US13/377,150
• Publication Number:
  US 20130070189A1
• Time in Patent Office: Days
• US Class Current: 349/113
• CPC Class Codes: G02F 1/133385 with cooling means, e.g. fans
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels

Abstract

A liquid crystal display (LCD) device is disclosed. The LCD device comprises an LCD panel, a flexible printed circuit board (FPCB) disposed at a side of the LCD panel, and a chip disposed on the FPCB to drive the LCD panel. The LCD device further comprises a heat dissipating element, and the chip is covered by the heat dissipating element so that heat generated by the chip is dissipated via the heat dissipating element. Thereby, damage to the chip due to an overhigh temperature can be avoided, thus prolonging the service life of the LCD device.

Claims

1. A liquid crystal display (LCD) device, comprising an LCD panel, a flexible printed circuit board (FPCB) disposed at a side of the LCD panel, and a chip disposed on the FPCB to drive the LCD panel, wherein the LCD device further comprises a heat dissipating element, the chip is covered by the heat dissipating element so that heat generated by the chip is dissipated via the heat dissipating element, the heat dissipating element comprises a thermally conductive buffering material and a first thermally conductive double-sided adhesive tape, and the thermally conductive buffering material is joined to the chip by the first thermally conductive double-sided adhesive tape.

2. The LCD device of claim 1, further comprising a light guide plate and a reflective sheet, wherein an end of the FPCB that is away from the LCD panel is disposed opposite to the light guide plate, and the reflective sheet is disposed between the light guide plate and the thermally conductive buffering material and is attached to the light guide plate.

3. The LCD device of claim 2, wherein the heat dissipating element further comprises a second thermally conductive double-sided adhesive tape disposed between the reflective sheet and the thermally conductive buffering material, and the reflective sheet is joined to the thermally conductive buffering material by means of the second thermally conductive double-sided adhesive tape.

4. The LCD device of claim 2, further comprising a plastic frame disposed between the light guide plate and the thermally conductive buffering material to support the LCD panel, wherein the heat dissipating element further comprises a third thermally conductive double-sided adhesive tape disposed between the plastic frame and the thermally conductive buffering material, and the plastic frame is joined to the thermally conductive buffering material by means of the third thermally conductive double-sided adhesive tape.

5. The LCD device of claim 1, wherein the thermally conductive buffering material is a flexible sheet with thermal conductivity, and at an end of a front side and an opposite end of a back side of the flexible sheet is disposed a fourth thermally conductive double-sided adhesive tape respectively, and the flexible sheet is fixed to FPCBs at two opposite sides of the chip by means of the fourth thermally conductive double-sided adhesive tapes.

6. The LCD device of claim 5, wherein the first thermally conductive double-sided adhesive tape is disposed at a geometric center position of the flexible sheet.

7. The LCD device of claim 1, wherein the chip is a source-drive chip or a gate-drive chip.

8. An LCD device, comprising an LCD panel, an FPCB disposed at a side of the LCD panel, and a chip disposed on the FPCB to drive the LCD panel, wherein the LCD device further comprises a heat dissipating element, and the chip is covered by the heat dissipating element so that heat generated by the chip is dissipated via the heat dissipating element.

9. The LCD device of claim 8, wherein the heat dissipating element comprises a thermally conductive buffering material and a first thermally conductive double-sided adhesive tape, and the thermally conductive buffering material is joined to the chip by means of the first thermally conductive double-sided adhesive tape.

10. The LCD device of claim 9, further comprising a light guide plate, wherein an end of the FPCB that is away from the LCD panel is disposed opposite to the light guide plate.

11. The LCD device of claim 10, further comprising a reflective sheet which is disposed between the light guide plate and the thermally conductive buffering material and is attached to the light guide plate.

12. The LCD device of claim 11, wherein the heat dissipating element further comprises a second thermally conductive double-sided adhesive tape disposed between the reflective sheet and the thermally conductive buffering material, and the reflective sheet is joined to the thermally conductive buffering material by means of the second thermally conductive double-sided adhesive tape.

13. The LCD device of claim 11, further comprising a plastic frame disposed between the light guide plate and the thermally conductive buffering material to support the LCD panel.

14. The LCD device of claim 13, wherein the heat dissipating element further comprises a third thermally conductive double-sided adhesive tape disposed between the plastic frame and the thermally conductive buffering material, and the plastic frame is joined to the thermally conductive buffering material by means of the third thermally conductive double-sided adhesive tape.

15. The LCD device of claim 9, wherein the thermally conductive buffering material is a flexible sheet with thermal conductivity, and at an end of a front side and an opposite end of a back side of the flexible sheet is disposed a fourth thermally conductive double-sided adhesive tape respectively, and the flexible sheet is fixed to FPCBs located at two opposite sides of the chip by means of the fourth thermally conductive double-sided adhesive tapes.

16. The LCD device of claim 15, wherein the first thermally conductive double-sided adhesive tape is disposed at a geometric center position of the flexible sheet.

17. The LCD device of claim 8, wherein the chip is a source-drive chip or a gate-drive chip.