Display device

• US 10,674,632 B2
• Filed: 11/19/2017
• Issued: 06/02/2020
• Est. Priority Date: 11/24/2016
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Park, JongYoung, Bang, JinYoung, Jang, Jikwang
• Primary Examiner(s): Wicklund, Daniel P
• Assistant Examiner(s): Jalali, Amir A
• Application Number:
  US15/817,239
• Publication Number:
  US 20180146572A1
• Time in Patent Office: 926 Days
• Field of Search: 361690, 361704, 361707, 361711, 36167924, 36167954, 36167961, 349 58, 174556
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133382 Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: H05K 1/028 Bending or folding regions of flexible printed circuits H05K1/0283 takes precedence
• CPC Class Codes: H05K 5/0017 with operator interface units
• CPC Class Codes: H05K 5/0243 for decorative purposes
• CPC Class Codes: H05K 5/03 Covers
• CPC Class Codes: H05K 7/2039 characterised by the heat transfer by conduction from the heat generating element to a dissipating body arrangements for increasing/decreasing heat-transfer, e.g. fins details, F28F13/00
• CPC Class Codes: H05K 7/20963 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20972 takes precedence

Abstract

A narrow-bezel display device. A bezel in outer peripheral portions of the display device is reduced. A plurality of circuit films, a printed circuit board, and the like, connected to a display panel, are protected. Heat dissipation performance is improved.

Claims

1. A display device comprising:

a display panel;

a printed circuit board engaged with the display panel;

a plurality of flexible circuit films having one end connected to the display panel and the other end connected to the printed circuit board, wherein the plurality of flexible circuit films is arranged in parallel to a rear surface of the display panel, spaced apart from a predetermined edge of the display panel, and the one end and the other end are spaced apart from each other along the predetermined edge of the display panel;

a back cover accommodating an entire area of the rear surface of the display panel including the plurality of flexible circuit films and the printed circuit board in the display device,

wherein the back cover includes a plurality of stepped portions that has a horizontal portion extended to be parallel to the display panel and a vertical portion protruding toward the display panel and perpendicular to the back cover, and the horizontal portion is substantially greater than the vertical portion in length;

a plurality of first support members supporting the printed circuit board and the back cover and maintaining a distance between the printed circuit board and the back cover;

an insulating member disposed on a portion of the back cover corresponding to the printed circuit board, wherein the plurality of first support members is attached between the printed circuit board and the insulating member;

a plurality of second support members disposed between two adjacent flexible circuit films among the plurality of flexible circuit films and supporting the display panel and the back cover; and

a plurality of third support members supporting the display panel and the plurality of flexible circuit films and maintaining a distance between the display panel and the plurality of flexible circuit,

wherein the plurality of second support members is not connected and separated apart from one another,

wherein the plurality of second support members and the plurality of third support members are disposed between the plurality of stepped portions and the display panel and the plurality of first support members is disposed outside the plurality of stepped portions, and

wherein the plurality of second support members and the plurality of third support members are attached to an encapsulating member that seals array of pixels in the display panel.

2. The display device according to claim 1, wherein the plurality of second support members are attached at the plurality of stepped portions of the back cover.

3. The display device according to claim 2, further comprising a plurality of heat dissipating members disposed on inner surfaces of the plurality of stepped portions of the back cover.

4. The display device according to claim 3, wherein each of the plurality of flexible circuit films comprises a driving integrated circuit in close contact with and supported by the plurality of heat dissipating members.

5. The display device according to claim 4, further comprising a plurality of resin members provided on the rear surface of the display panel, outside of bent portions of the flexible circuit films and maintaining a shape of the bent portions of the flexible circuit films.

6. The display device according to claim 1, wherein the back cover has a first plate disposed at the rear of the display panel and a second plate bent from an edge of the first plate toward an edge of the display panel to protect the flexible circuit films and the edge of the display panel.

7. The display device according to claim 6, wherein the second plate of the back cover has an inclined surface at an outer end, the inclined surface having a gradually decreasing thickness toward an end of the second plate.

8. The display device according to claim 1, further comprising a middle cabinet attached to an edge of the back cover to cover the flexible circuit films and protecting the flexible circuit films and an edge of the display panel corresponding thereto.

9. The display device according to claim 8, further comprising a decorative cover attached to the middle cabinet to improve an aesthetic design quality of the display device.

10. A display device comprising a display panel and a printed circuit board engaged with the display panel, comprising:

a plurality of flexible circuit films having one end electrically connected to the display panel and the other end electrically connected to the printed circuit board and disposed in parallel with each other at a rear surface of the display panel;

a back cover accommodating an entire area of the rear surface of the display panel including the plurality of flexible circuit films and the printed circuit board in the display device,

wherein the back cover includes a plurality of stepped portions that has a horizontal portion extended to be parallel to the display panel and a vertical portion protruding toward the display panel and perpendicular to the back cover, and the horizontal portion is substantially greater than the vertical portion in length;

a plurality of first support members supporting the printed circuit board and the back cover and maintaining a distance between the printed circuit board and the back cover;

an insulating member disposed on a portion of the back cover corresponding to the printed circuit board, wherein the plurality of first support members is attached between the printed circuit board and the insulating member;

a plurality of second support members disposed between two adjacent flexible circuit films among the plurality of flexible circuit films and supporting the display panel and the back cover; and

a plurality of third support members supporting the display panel and the plurality of flexible circuit films and maintaining a distance between the display panel and the plurality of flexible circuit,

wherein the plurality of second support members is not connected and separated apart from one another,

wherein the plurality of second support members and the plurality of third support members are disposed between the plurality of stepped portions and the display panel and the plurality of first support members is disposed outside the plurality of stepped portions, and

wherein the plurality of second support members and the plurality of third support members are attached to an encapsulating member that seals array of pixels in the display panel.

11. The display device according to claim 10, wherein the plurality of second support members are attached at the plurality of stepped portions of the back cover.

12. The display device according to claim 11, further comprising a plurality of heat dissipating members disposed on inner surfaces of the plurality of stepped portions of the back cover.

13. The display device according to claim 12, wherein each of the plurality of flexible circuit films comprises a driving integrated circuit in close contact with and supported by the plurality of heat dissipating members.

14. The display device according to claim 13, further comprising a plurality of resin members provided on the rear surface of the display panel, outside of bent portions of the flexible circuit films and maintaining a shape of the bent portions of the flexible circuit films.

15. The display device according to claim 10, wherein the back cover has a first plate disposed at the rear of the display panel and a second plate bent from an edge of the first plate toward an edge of the display panel to protect the flexible circuit films and the edge of the display panel.

16. The display device according to claim 15, wherein the second plate of the back cover has an inclined surface at an outer end, the inclined surface having a gradually decreasing thickness toward an end of the second plate.