CN202581233U

CN202581233U - Heat radiating device of backlight module and liquid crystal display

Info

Publication number: CN202581233U
Application number: CN2012202544459U
Authority: CN
Inventors: 郭东明; 柴岩峰
Original assignee: Shenzhen TCL New Technology Co Ltd
Current assignee: Shenzhen TCL New Technology Co Ltd
Priority date: 2012-05-31
Filing date: 2012-05-31
Publication date: 2012-12-05
Anticipated expiration: 2022-05-31

Abstract

The utility model discloses a heat radiating device of a backlight module and a liquid crystal display. The heat radiating device of the backlight module specifically comprises substrates and a screen back plate, wherein the substrates comprise a first substrate and a second substrate, the first substrate and the second substrate form a bent structure, and the inner side of the second substrate is provided with a strip light of the backlight module; one end of the screen back plate is provided with a cutting groove, the second substrate is inserted into the cutting groove, the outer side of the second substrate is jointed with the inner side of the cutting groove, and the inner side of the first substrate is jointed with the outer side of the screen back plate. According to the utility model, a heat radiating effect of a light source is improved obviously, the thickness contributed by a heat radiator is omitted, the heat radiating device is simpler, lighter and thinner, so that the thickness of the entire liquid crystal display is reduced favorably, the realization of a narrow-frame liquid crystal display is facilitated, and the production cost is saved greatly.

Description

Module radiator backlight and LCD

Technical field

The utility model relates to technical field of liquid crystal display, particularly a kind of module radiator backlight and LCD.

Background technology

Along with the progress of lcd technology, LCD develops towards ultra-thinization and ultra narrow frame direction, and the LED lamp bank row on the lamp bar are more and more intensive, perhaps adopt single the LED lamp that power is bigger, cause corresponding heat flow density to increase, the heat radiation difficulty.

In the LED lamp heat sink conception commonly used; Heat-transfer path is LED lamp bar, insulating barrier, substrate, bond plies, radiator, screen backboard; Radiator and bond plies have increased the thickness of frame in this scheme; Because insulating barrier and bond plies heat conductivility are relatively poor, and the heat-transfer path thermal resistance is bigger, be unfavorable for that heat radiation of LED lamp and frame reduce simultaneously.

The utility model content

The main purpose of the utility model is to provide that a kind of volume is little, good heat dissipation, help the module radiator backlight and the LCD of complete machine slimming design.

The utility model proposes a kind of module radiator backlight; Comprise substrate and screen backboard; Said substrate comprises first substrate and second substrate, and said first substrate and said second substrate form a bending structure, and the said second substrate installed inside has the lamp bar of module backlight; Said screen backboard one end is provided with grooving, and said second substrate inserts said grooving, fits with said grooving is inboard in said second substrate outside, fits in the inboard and said screen backboard of said first substrate outside.

Preferably, the second substrate inboard of said substrate is provided with boss, and said lamp bar is installed on the said boss.

Preferably, said lamp bar is welded on the said boss.

Preferably, the both sides pressing of said boss has insulating barrier, and said insulating barrier top is equipped with circuit layer, and the pin of said lamp bar is connected with said circuit layer.

Preferably, on said substrate and the screen backboard respectively correspondence be provided with screwed hole, said screwed hole is isosceles triangle arranges, screw passes said screwed hole, fixing said substrate and screen backboard.

Preferably, said module radiator backlight also comprises graphite flake, and said graphite flake fits in the said substrate outside.

Preferably, said graphite flake extends to said screen backboard center, shields the backboard outside with part and fits.

Preferably, an end face outer wall of the back cover of an end face outer wall of said screen backboard and LCD is fitted.

Preferably, form an air blanketing between said back cover and the said graphite flake outer surface.

The utility model also proposes a kind of LCD; Comprise module radiator backlight; Said module radiator backlight specifically comprises substrate and screen backboard; Said substrate comprises first substrate and second substrate, and said first substrate and said second substrate form a bending structure, and the said second substrate installed inside has the lamp bar of module backlight; Said screen backboard one end is provided with grooving, and said second substrate inserts said grooving, fits with said grooving is inboard in said second substrate outside, fits in the inboard and said screen backboard of said first substrate outside.

The utility model light source heat radiation effect obviously improves, and the thickness of having avoided radiator to bring, and structure is simpler, frivolous, helps reducing the thickness of whole LCD, helps the realization of narrow frame LCD, and has practiced thrift production cost greatly.

Description of drawings

Fig. 1 (a) is the structural representation of module radiator backlight among the utility model first embodiment;

Fig. 1 (b) is an A place enlarged drawing among Fig. 1 (a);

Fig. 2 (a) is the structural representation of lamp bar assembly in the module radiator backlight of the utility model second embodiment;

Fig. 2 (b) is a B place enlarged drawing among Fig. 2 (a);

Fig. 3 is the structural representation of screen backboard in the module radiator backlight of the utility model the 3rd embodiment.

The realization of the utility model purpose, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.

The specific embodiment

Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Shown in Fig. 1 (a) and Fig. 1 (b), Fig. 1 (a) is the structural representation of module radiator backlight among the utility model first embodiment, and Fig. 1 (b) is an A place enlarged drawing among Fig. 1 (a).

The module radiator backlight that present embodiment proposes; Comprise substrate 110 and screen backboard 120; Substrate 110 comprises that first substrate 111 and second substrate, 112, the first substrates 111 and second substrate 112 form a bending structure, and second substrate, 112 installed inside have the lamp bar 130 of module backlight; Screen backboard 120 1 ends are provided with grooving 121; Second substrate 112 of substrate 110 inserts grooving 121; Second substrate 112 can tightly be locked through screw and screen backboard 120 sides; Making second substrate, 112 outsides and grooving 121 inboard applyings of substrate 110, fits in first substrate, 111 inboards and screen backboard 120 outsides of substrate 110.Because present embodiment is directly installed on lamp bar 130 on the substrate 110; The heat of lamp bar 130 is directly dispelled the heat through substrate 110 and screen backboard 120, and the light source heat radiation effect obviously improves, and the thickness of having avoided radiator to bring; Structure is simpler, frivolous; Help reducing the thickness of whole LCD, help the realization of narrow frame LCD, and practiced thrift production cost greatly.

Among the utility model embodiment, module radiator backlight also comprises graphite flake 140, and graphite flake 140 fits in substrate 110 outsides, and simultaneously, graphite flake 140 extends to screen backboard 120 centers, shields backboard 120 outsides with part and fits.Present embodiment is improved as plane heat source with the heat point source of lamp bar 130 under the high plane heat conductivility effect of graphite flake 140, the part heat is conducted to screen backboard 120, helps improving the heat transfer efficiency of substrate 110 and screen backboard 120.In addition; One end face inwall of the one end face outer wall of screen backboard 120 and the back cover 150 of LCD is fitted; Between back cover 150 and graphite flake 140 outer surfaces, form an air blanketing; The heat that graphite flake 140 is derived can distribute heat through the mode of convection current and radiation, has further reduced the temperature of lamp bar 130.

Shown in Fig. 2 (a) and Fig. 2 (b), Fig. 2 (a) is the structural representation of lamp bar assembly in the module radiator backlight of the utility model second embodiment, and Fig. 2 (b) is a B place enlarged drawing among Fig. 2 (a).

In the present embodiment, substrate 210, lamp bar 220, insulating barrier 230 and circuit layer 240 common formation lamp bar assemblies.Wherein, second substrate, 213 inboards of substrate 210 are provided with boss 211, and boss 211 both sides pressings have insulating barrier 230; Insulating barrier 230 tops are equipped with circuit layer 240; The welding pin of lamp bar 220 is connected with circuit layer 240, and lamp bar 220 is installed on the boss 211, can be through the mode of welding; The pad of each LED lamp in the lamp bar 220 is welded on the boss 211; Avoid the bonding heat-conducting effect difference that causes of traditional employing bond plies and bonding insecure, the heat of lamp bar 220 is directly conducted to substrate 210, helped 220 heat radiations of lamp bar.

In addition, on substrate 210 and the screen backboard respectively correspondence be provided with a plurality of screwed holes 212, screwed hole 212 is isosceles triangle arranges, screw passes screwed hole 212, fixing base 210 and screen backboard.Because screwed hole 212 is isosceles triangle and arranges, can substrate 210 tightly be locked on the screen backboard, compared to the screwed hole that in-line is arranged, substrate 210 is better with the applying degree of screen backboard, helps substrate 210 more to the heat radiation of screen backboard.

As shown in Figure 3, Fig. 3 is the structural representation of screen backboard in the module radiator backlight of the utility model the 3rd embodiment.

In the present embodiment, screen backboard 310 1 ends are provided with grooving 311, second substrate, the one end coupling of the size of this grooving 311 and L shaped substrate, and second substrate that substrate is equipped with the lamp bar is inserted in the grooving 311.Simultaneously, also be provided with a plurality of screwed holes 312 on the screen backboard, corresponding with the screwed hole on the substrate; Screwed hole 312 is isosceles triangle and arranges; Screw passes screwed hole 312, and fixing base and screen backboard 310 tightly lock on the screen backboard 310 substrate; The applying degree is better, helps substrate more to 310 heat radiations of screen backboard.

The utility model also proposes a kind of LCD; Comprise module radiator backlight; This module radiator backlight specifically comprises substrate and screen backboard; Substrate comprises first substrate and second substrate, and first substrate and second substrate form a bending structure, and the second substrate installed inside has the lamp bar of module backlight; Screen backboard one end is provided with grooving, and second substrate inserts grooving, fits with grooving is inboard in second substrate outside, and first substrate is inboard fits with the screen backboard outside.

The utility model LCD comprises module radiator backlight, and this module radiator backlight can comprise earlier figures 1 all technical schemes in embodiment illustrated in fig. 3, and its detailed structure can not given unnecessary details at this with reference to previous embodiment.Owing to adopt the scheme of aforementioned module radiator backlight; The existing relatively LCD of the LCD of the utility model, radiating effect obviously improves, and is simple in structure, frivolous; Easy for installation; Help reducing whole LCDs thickness, help the realization of narrow frame LCDs, and practiced thrift production cost greatly.

The above is merely the preferred embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.

Claims

1. module radiator backlight; Comprise substrate and screen backboard, it is characterized in that said substrate comprises first substrate and second substrate; Said first substrate and said second substrate form a bending structure, and the said second substrate installed inside has the lamp bar of module backlight; Said screen backboard one end is provided with grooving, and said second substrate inserts said grooving, fits with said grooving is inboard in said second substrate outside, fits in the inboard and said screen backboard of said first substrate outside.

2. module radiator backlight according to claim 1 is characterized in that, the said second substrate inboard is provided with boss, and said lamp bar is installed on the said boss.

3. module radiator backlight according to claim 2 is characterized in that, said lamp bar is welded on the said boss.

4. module radiator backlight according to claim 3 is characterized in that, the both sides pressing of said boss has insulating barrier, and said insulating barrier top is equipped with circuit layer, and the pin of said lamp bar is connected with said circuit layer.

5. according to each described module radiator backlight of claim 2 to 4; It is characterized in that, said substrate with the screen backboard on respectively correspondence be provided with screwed hole, said screwed hole is isosceles triangle and arranges; Screw passes said screwed hole, fixing said substrate and screen backboard.

6. module radiator backlight according to claim 5 is characterized in that, also comprises graphite flake, and said graphite flake fits in the said substrate outside.

7. module radiator backlight according to claim 6 is characterized in that, said graphite flake extends to said screen backboard center, shields the backboard outside with part and fits.

8. module radiator backlight according to claim 7 is characterized in that, an end face inwall of an end face outer wall of said screen backboard and the back cover of LCD is fitted.

9. module radiator backlight according to claim 8 is characterized in that, forms an air blanketing between said back cover and the said graphite flake outer surface.

10. a LCD is characterized in that, comprises like each described module radiator backlight of claim 1 to 9.