Backlight assembly and liquid crystal display thereof

Abstract

A lamp holder includes a holder body and a power connector. A lamp guide groove is formed on an upper portion of the holder body. An inverter insertion groove is formed on a lower portion of the holder body, and a power supply board is slidably coupled to the inverter insertion groove. The power connector includes a first portion exposed to the inverter insertion groove, and a second portion disposed adjacent to the lamp guide groove. The lamp holder fixed to a fixing groove of an insulation plate is inserted into an opening formed through a bottom plate of a receiving container. Thus, a backlight assembly having the lamp holder may be easily assembled and repaired.

Description

BRIEF DESCRIPTION OF THE DRAWING

The foregoing and other objects, features and advantages of the present invention will become more apparent from a reading of the ensuing description together with the drawings, in which:

FIG. 1 is a perspective view illustrating a lamp holder according to an exemplary embodiment of the present invention;

FIG. 2 is a perspective view illustrating the power connector illustrated in FIG. 1;

FIG. 3 is an exploded perspective view illustrating the lamp holder illustrated in FIG. 1;

FIG. 4 is a cross-sectional view taken along a line I-I′ in FIG. 3;

FIG. 5 is a cross-sectional view taken along a line II-II′ in FIG. 3;

FIG. 6 is a perspective view illustrating a lamp holder according to another exemplary embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along a line III-III′ in FIG. 6;

FIG. 8 is a cross-sectional view taken along a line IV-IV′ in FIG. 6;

FIG. 9 is an exploded perspective view illustrating a power supply module according to an exemplary embodiment of the present invention;

FIG. 10 is a perspective view illustrating coupling of the lamp holder and the insulation plate illustrated in FIG. 9;

FIG. 11 is a rear perspective view illustrating the power supply module illustrated in FIG. 9;

FIG. 12 is a perspective view illustrating the power supply module illustrated in FIG. 9;

FIG. 13 is a cross-sectional view taken along a line V-V′ in FIG. 12;

FIG. 14 is an exploded perspective view illustrating a backlight assembly according to an exemplary embodiment of the present invention;

FIG. 15 is a cross-sectional view taken along a line VI-VI′ in FIG. 14;

FIG. 16 is an exploded perspective view illustrating a backlight assembly according to another exemplary embodiment of the present invention;

FIG. 17 is a rear perspective view illustrating the backlight assembly illustrated in FIG. 16;

FIG. 18 is a cross-sectional view taken along a line VII-VII′ in FIG. 16;

FIG. 19 is an exploded perspective view illustrating a display device according to an exemplary embodiment of the present invention; and

FIG. 20 is a cross-sectional view taken along a line VIII-VIII′ in FIG. 19.

Claims

1. A lamp holder comprising: a holder body having a lamp guide groove formed on an upper portion of the holder body, and an inverter insertion groove formed on a lower portion of the holder body; anda power connector comprising:a first portion exposed to the inverter insertion groove; anda second portion disposed adjacent to the lamp guide groove.

2. The lamp holder of claim 1, wherein the power connector is disposed at a first recess of the lamp holder, the lamp guide groove is disposed and extended to a first direction opposite to the first recess, and the inverter insertion groove is disposed and extended to a second direction opposite to the first recess.

3. The lamp holder of claim 2, wherein the inverter insertion groove is recessed to a predetermined depth to expose the first portion of the power connector.

4. The lamp holder of claim 2, wherein the first portion of the power connector is bent from the first recess to the second direction of the inverter insertion groove at a lower portion of the first portion.

5. The lamp holder of claim 4, wherein the first portion of the power connector comprising an inverter catching structure.

6. The lamp holder of claim 5, wherein the inverter catching structure has a hook shape.

7. The lamp holder of claim 2, wherein the second portion comprises a wire catching portion located near the lamp guide groove and holding a wire of the lamp which is located at the outer end of the lamp.

8. The lamp holder of claim 2, further comprising a holder cap inserted to the first recess in a third direction from the lamp guide groove to the inverter insertion groove.

9. The lamp holder of claim 2, wherein the first portion of the power connector includes a power input portion receiving a power source externally provided, and the second portion of the power connector includes a power output portion applying the power source to an electrode portion of the lamp.

10. A power supply module comprising: a power supply board having a plurality of power output terminals formed along an edge portion of the power supply board; anda plurality of lamp holders, each of the lamp holders comprising:a holder body having a lamp guide groove formed on an upper portion of the holder body, and an inverter insertion groove being formed on a lower portion of the holder body, the edge portion of the power supply board being inserted into the inverter insertion groove; anda power connector comprising a first portion exposed to the inverter insertion groove and making contact with the power output terminal, and a second portion disposed adjacent to the lamp guide groove.

11. The power supply module of claim 10, further comprising an insulation plate facing the power supply board and having a fixing groove into which the holder body is inserted.

12. The power supply module 11, wherein the first portion comprises: a first connection portion making contact with an upper surface of the power supply board; anda second connection portion making contact with a lower surface of the power supply board.

13. The power supply module of claim 12, wherein the power output terminal is formed on one of the upper surface and the lower surface of the power supply board to make contact with one of the first connection portion and the second connection portion.

14. A backlight assembly comprising: a plurality of lamp holders, each of the lamp holders comprising:a holder body having a lamp guide groove being formed on an upper portion of the holder body, and an inverter insertion groove being formed on a lower portion of the holder body; anda power connector comprising a first portion exposed to the inverter insertion groove and a second portion disposed adjacent to the lamp guide groove;a receiving container comprising a bottom plate having a plurality of openings into which the lamp holders are inserted, and a sidewall disposed on a peripheral portion of the bottom plate;a plurality of lamps each comprising a lamp tube guided by the lamp guide groove, and an electrode portion extending from an end portion of the lamp tube and making contact with the second portion; anda power supply board slidably inserted into the inverter insertion groove exposed to a rear surface of the bottom plate, power output terminals that make contact with the first portion being formed on the power supply board.

15. The backlight assembly of claim 14, further comprising an insulation plate disposed between the bottom plate and the power supply board, a fixing groove into which the holder body of each of the lamp holders is inserted being formed on the insulation plate.

16. The backlight assembly of claim 15, further comprising: a side mold covering the lamp holders, a plurality of grooves being formed on the side mold to prevent interference between the lamps; andan optical unit disposed over the lamps and supported by the sidewall and the side mold.

17. The backlight assembly of claim 15, further comprising: a lamp reflector disposed adjacent to the sidewall to enclose the lamp and reflect light generated from the lamp toward a receiving space defined by the bottom plate and the sidewall; anda light guiding plate comprising a light-exiting face, a counter face facing the light-exiting face, and a side face connecting the light-exiting face and the counter face, the lamp being disposed adjacent to the side face.

18. A display device comprising: a plurality of lamp holders, each of the lamp holders comprising:a holder body, a lamp guide groove being formed on an upper portion of the holder body and an inverter insertion groove being formed on a lower portion of the holder body; anda power connector comprising a first portion exposed to the inverter insertion groove and a second portion disposed adjacent to the lamp guide groove;an insulation plate having a fixing groove into which the holder body of each of the lamp holders is slidably inserted;a receiving container comprising a bottom plate having a plurality of openings into which the lamp holders fastened to the insulation plate are inserted, and a sidewall disposed on a peripheral portion of the bottom plate; a plurality of lamps each comprising a lamp tube guided by the lamp guide groove, and an electrode portion extending from an end portion of the lamp tube and making contact with the second portion;a power supply board slidably inserted into the inverter insertion groove exposed to a rear surface of the bottom plate, power output terminals that make contact with the first portion being formed on the power supply board;an optical unit disposed over the lamps; anda display panel disposed over the optical unit.