CN201032505Y

CN201032505Y - Positioning device of backlight module

Info

Publication number: CN201032505Y
Application number: CNU2007200009660U
Authority: CN
Inventors: 陈进辉; 郑国丰
Original assignee: K Bridge Electronics Co Ltd
Current assignee: K Bridge Electronics Co Ltd
Priority date: 2007-01-22
Filing date: 2007-01-22
Publication date: 2008-03-05
Anticipated expiration: 2017-01-22

Abstract

The utility model provides a locating device of a backlight module. A locating part is arranged on a first component in the backlight module, the locating part extends into a second component part to be located; therein, the first component comprises a metallic back plate, an earthing strip, and a metallic reflecting layer; the second component is a gluey frame; the second component is a gluey frame, and a light guide plate is assembled on the gluey frame; the second component is a gluey frame, and a diffuser plate is assembled on the gluey frame; the second component is a lamp tube fixing seat, the lamp tube fixing seat is a ring shape for sleeving the lamp tube, and a diffuser plate is assembled above the lamp tube fixing seat. The device for mutual positioning between the first component and the second component, for example, the method for positioning between the the metallic back plate or the metallic reflecting layer and the gluey frame is integral manufacturing, other assembly component parts (such as screws) or assembly structures (such as hole opening or hook clamping) are not required to be arranged, but also the assembly intensity between the metallic back plate or the metal reflecting layer and the gluey frame can be enhanced.

Description

The locating device of backlight module

Technical field

The utility model aims to provide a kind of setting that does not need other parts or package assembly at the locating device of first and second parts in the middle of the backlight module, can make first and second parts assemble the location mutually.

Background technology

Quick progress along with the thin film transistor (TFT) manufacturing technology, advantages such as LCD is frivolous owing to having possessed, power saving, radiationless line, and a large amount of being applied in the various electronic products such as personal digital assistant, mobile computer, digital camera, Video Camera, mobile phone.Add the positive input research and development of industry and adopt the production equipment that maximizes, the quality of LCD is constantly promoted, and the lasting decline of price, more make the application of LCD enlarge rapidly.

In general, because LCD is non-luminiferous display device, need could produce the function of demonstration with backlight module, be with when the assembling liquid crystal display, in regular turn in the framework with backlight module and liquid crystal panel set device, display.The side light type back light module package program that habit has, as shown in Figure 1, earlier a light tube group 15 is assembled in the upper surface that in regular turn light guide plate 13 and blooming piece (not indicating among the figure) is stacked in reflector plate 14 in the metallic reflector 11 again, and outside metallic reflector 11 and glue frame 13, be provided with a metal backing 16, and at the upper surface of blooming piece installing liquid crystal panel (indicating among the figure), at last metal outer frame 17 covers are overlying on the liquid crystal panel, and by perforate on metal backing 16 and glue frame 12 its frameworks 161 and grab 121, fasten the location each other, reach metallic reflector 11, glue frame 13 and metal backing 16 be the effect of assembling location mutually.

Moreover, be illustrated in figure 2 as to plant in addition and be used for mobile computer side light type back light module assembling synoptic diagram, same earlier light tube group 15 being assembled in is positioned on the glue frame 12 again in the metallic reflector 11, lock screw 18 in

metallic reflector

11 and 12 of glue frames, locking is located each other, reach the effect of metallic reflector 11 and glue frame 12 being assembled mutually the location, in regular turn light guide plate and blooming piece (indicating among the figure) are stacked in the upper surface of reflector plate again, upper surface installing liquid crystal panel (not indicating among the figure) at blooming piece, at last metal outer frame 17 cover is overlying on the liquid crystal panel, and finishes the assembling of display.

And in package program, tend on the glue frame, additionally install additional grounding elastic part, and this grounding elastic part is contacted with metal outer frame, so that see through the grounding function that metal outer frame is got rid of electric charge.Common way is with screw metallic reflector and grounding elastic part to be locked on the glue frame simultaneously earlier, in the program of follow-up locking metal outer frame and glue frame, makes the button point on the grounding elastic part again, is fastened on the metal outer frame surface.

The shortcoming of above-mentioned package program is:

1, the locating device between metal backing or metallic reflector and glue frame, be to utilize perforate and grab to fasten the location each other, it need this perforate of moulding in advance in the appropriate location when metal backing or metallic reflection formable layer, and be reserved with grab during the moulding of glue frame, not only increase the complicacy of mould, and behind also necessary involutory perforate earlier and the grab, just can further fasten during assembling, increase built-up time.

2, the locating device between metal backing or metallic reflector and glue frame, also utilize the locking effect of screw and finish assembling, but must correctly lock screw in the appropriate location during assembling, if locking force is not good or the locking position skew, all might cause assembling intensity not good, and the possibility that gets loose is arranged.

3, its grounding elastic part is to utilize mode and metal backing or the glue frame assembling location that fastens, no matter be in the process of display carrying, or follow-uply be assembled in the process in the system machine by system manufacturer, all be easy to allow the phenomenon that gets loose between grounding elastic part and metal backing or glue frame.

In addition, the package program of direct type backlight module is earlier to utilize lamp tube fixing seat to be positioned on the metallic reflector each fluorescent tube, in regular turn diffuser plate and blooming piece is stacked in the top of metallic reflector again, at the upper surface installing liquid crystal panel of blooming piece, promptly finish the assembling of display at last; Wherein, the locator meams of lamp tube fixing seat and metallic reflector location is to utilize screw locking location, but utilizes the mode of screw locking that the not good or lock locking position skew because of locking force takes place equally easily, all might cause assembling intensity not good, and the possibility that gets loose is arranged.

The utility model content

In view of this, the utility model is promptly providing a kind of setting that does not need other parts or package assembly, can make first and second parts assemble the locating device of the backlight module of location mutually.

For reaching above-mentioned purpose, first parts of the present utility model (as metal backing, grounding elastic part, metallic reflector or solid matter) are provided with a location division, this location division can be when second parts (as the glue frame) moulding, insert in the forming area of second parts, behind the injection moulding material, its location division can be stretched in second parts and locate, and makes first parts can be one-body molded with second parts, not only save assembling procedure, more can increase the assembling intensity between first and second parts.

The beneficial effects of the utility model are: its device of locating mutually between first and second parts in this backlight module, for example the locator meams between metal backing or metallic reflector and glue frame is for being made into integration, do not need the setting of other parts (as screw) or package assembly (as perforate and grab), not only save assembling procedure, more can increase the assembling intensity between metal backing or metallic reflector and glue frame.

Description of drawings

Fig. 1 is a structural representation of commonly using glue frame and metal backing assembling location;

Fig. 2 commonly uses the structural perspective of glue frame and metal backing assembling location for other plants;

Fig. 3 is the STRUCTURE DECOMPOSITION figure of the first embodiment locator meams in the utility model;

Fig. 4 is the structural representation of first and second positioning parts in the utility model;

Fig. 5 is the STRUCTURE DECOMPOSITION figure of side light type back light module in the utility model;

Fig. 6 is the structural representation of direct type backlight module in the utility model;

Fig. 7 is the STRUCTURE DECOMPOSITION figure of the second embodiment locator meams in the utility model;

Fig. 8 is the structural representation of the 3rd embodiment locator meams in the utility model.

[figure number explanation]

11 metallic reflectors, 12 glue frames

121 grabs, 13 light guide plate

14 reflector plates, 15 light tube group

161 perforates of 16 metal backings

17 metal outer frame, 18 screws

2 first parts, 21 location divisions

31 molds, 32 bed dies

33 forming areas, 331 first preformed zones

331 second preformed zone, 34 moulding materials

34 ' moulding material, 4 second parts

51 light guide plate, 52 blooming pieces

53 liquid crystal panels, 54 fluorescent tubes

55 diffuser plates, 61 barrels

61 ' barrel, 62 injection nozzles

62 ' injection nozzle

Embodiment

The locating device of the utility model backlight module is illustrated in figure 3 as first embodiment of locator meams in the utility model, after its second parts utilize upper and lower mould 31,32 matched moulds, and injection moulding material in the formed forming area 33 and moulding.

Wherein, these first parts 2 are provided with location division 21, before the injection moulding material, be positioned in the forming area 33 by this location division 21 earlier, when the injection moulding material, and behind the cooling forming, its location division 21 can be stretched in second parts and locate, in Fig. 4 and embodiment shown in Figure 5, these second parts 4 are the glue frame, and first parts 2 can be metal backing or metallic reflector, make glue frame and metal backing and metallic reflector can utilize integrated structure, and then assembling light guide plate 51, blooming piece 52 and liquid crystal panel 53 are on the glue frame, and then finish the assembling of side light type back light module display, and do not need the setting of other parts (as screw) or package assembly (as perforate and grab), not only save assembling procedure, more can increase the assembling intensity of glue frame and metal backing or metallic reflection interlayer, make it be difficult for getting loose; Certainly, these first parts can also be grounding elastic part, make this grounding elastic part also can be one-body molded with the glue frame.

In addition, the utility model is applied to the assembling of direct type backlight module, as shown in Figure 6, these second parts 4 can be glue frame or lamp tube fixing seat, and first parts 2 can be metallic reflector, these first parts 2 are provided with location division 21 equally, after 4 moulding of second parts, its location division 21 can be stretched in second parts 4 and locate, this glue frame is located at the metallic reflector top, its lamp tube fixing seat is that ring-type can supply sheathed fluorescent tube 54, and lamp tube fixing seat top and be equiped with diffuser plate 55, blooming piece 52 and liquid crystal panel 53, and then finish the assembling of direct type backlight module display.

Be illustrated in figure 7 as second embodiment of the present utility model, after its second parts utilize upper and lower mould 31,32 matched moulds equally, injection moulding material in the formed forming area 33 and moulding, and behind this moulding material injection moulding zone 33, still before the uncolled curing, with this moulding material 33 of first parts, 2 one side contacts, make between first and second parts moulding material 33 fit mutually by molten, after making moulding material 33 cooling curings, its first and second parts are located the all-in-one-piece structure mutually.

In addition, be illustrated in figure 8 as the 3rd embodiment of the present utility model, utilize two kinds of different moulding materials 34,34 ' to be installed in respectively in the barrel 61,61 ', and by injection nozzle 62,62 ' respectively in regular turn in the injection moulding zone 33, and this forming area 33 is provided with first and second preformed zone 331,332, to supply two kinds of different moulding materials 34,34 ' injection moulding respectively, to form the integrated structure of first and second parts.

What deserves to be mentioned is, among above-mentioned three kinds of mentioned embodiment, first and second parts can be the heterogeneous material in the backlight module (as metal or solid matter and plastics or two kinds of different plastics), and provide it to assemble the mode of location, its locator meams is formed in one, do not need the setting of other parts (as screw) or package assembly (as perforate and grab), not only save assembling procedure, more can increase assembling intensity.

As mentioned above, the utility model provides backlight module another preferable feasible localization method and device thereof, so offer the application of utility model patent in accordance with the law; Yet only, above implementation and graphic shown in, be the utility model preferred embodiment, be not to limit to the utility model with this, be with, approximate with structure of the present utility model, device, feature etc., identical such as, all should belong to of the present utility model founding within purpose and the claim.

Claims

1. the locating device of a backlight module is characterized in that, first parts in its backlight module are provided with the location division, and this location division is stretched in second parts and located.

2. the locating device of backlight module according to claim 1 is characterized in that these first parts are metal backing, ground lug or metallic reflector.

3. the locating device of backlight module according to claim 1 is characterized in that these second parts are the glue frame.

4. the locating device of backlight module according to claim 1 is characterized in that these second parts are the glue frame, on the glue frame and be equiped with light guide plate.

5. the locating device of backlight module according to claim 1 is characterized in that these second parts are the glue frame, on the glue frame and be equiped with diffuser plate.

6. the locating device of backlight module according to claim 1 is characterized in that these second parts are lamp tube fixing seat, and its lamp tube fixing seat is can be for the ring-type of sheathed fluorescent tube, and lamp tube fixing seat top and be equiped with diffuser plate.