CN201652215U

CN201652215U - Diaphragm locating mechanism of backlight module

Info

Publication number: CN201652215U
Application number: CN2010201244015U
Authority: CN
Inventors: 林琪升
Original assignee: CPTF Optronics Co Ltd; Chunghwa Picture Tubes Ltd
Current assignee: CPTF Optronics Co Ltd
Priority date: 2010-03-05
Filing date: 2010-03-05
Publication date: 2010-11-24
Anticipated expiration: 2020-03-05

Abstract

The utility model relates to a diaphragm locating mechanism of a backlight module, which is arranged on a back plate of the backlight module; the diaphragm locating mechanism comprises a diaphragm and an outer frame, wherein the diaphragm is provided with a long side and a short side; the diaphragm is blocked and jointed on the back plate by the short side and extended with a protrudent part by the long side; the protrudent part is internally provided with a closed opening; and the long side and the short side respectively extend along the first direction and the second direction; the outer frame and the diaphragm are arranged on the back plate together; the outer frame is extended with a convex block along the third direction; the convex block corresponds to the protrudent part of the diaphragm; one side of the convex block is provided with a first observation hole; when the outer frame and the diaphragm are arranged on the back plate, the convex block extends in the closed opening along the third direction; the interior of the first observation hole can be watched at one side of the protrudent part; and the displacement of the long side of the diaphragm along the third direction can be limited by the convex block, thus avoiding the diaphragm warping. The diaphragm locating mechanism of the backlight module has simple structure, is reasonably designed, and can effectively avoid the diaphragm of the backlight module warping, and guarantee the functions of the backlight module.

Description

The diaphragm detent mechanism of backlight module

Technical field

The utility model is relevant a kind of diaphragm detent mechanism, refers to a kind of diaphragm detent mechanism of backlight module especially, utilizes the displacement of the projection limiting diaphragm of outside framework, to avoid producing the problem of warping of membrane.

Background technology

Please refer to Fig. 1 and Fig. 2, Fig. 1 is the schematic diagram of the diaphragm 10 in the known backlight module, and Fig. 2 is the schematic diagram that diaphragm 10 engages with the backboard 20 of backlight module.Diaphragm 10 has long limit 11 and minor face 12, first holding section 13 that on minor face 12, has the extending flute external form, when diaphragm 10 is combined in backboard 20, utilize second outstanding on first holding section 13 and the backboard 20 holding section 24 to engage mutually, with the X-direction of limiting diaphragm 10 on figure and the displacement of Y direction, thereby diaphragm 10 is located and is limited on the backboard 20.

Please refer to Fig. 3, it is the schematic diagram that warpage takes place for the diaphragm 10 of known backlight module 1, and backlight module 1 only covers an outside framework 50 up in addition except backboard 20 and diaphragm 10.But aforementioned first holding section 13 and second holding section 24 no doubt cooperate limiting diaphragm 10 in the displacement of X-direction and Y direction; but carry at backlight module 1, during high G value shock-testing; because the size factor on diaphragm long limit 11 of both sides about in the of 10; and long limit 11 there is no any other contained structure; therefore diaphragm 10 is jumped out the warping phenomenon of outside framework 50 along the G direction in regional A as the 3rd figure usually can take place on long limit 11, thereby has influenced the function of backlight module 1.

Summary of the invention

In view of the deficiency of above-mentioned technology, the purpose of this utility model provides a kind of diaphragm detent mechanism of backlight module, and this structure can be avoided the diaphragm generation warpage of backlight module.

The utility model adopts following scheme to realize, it is characterized in that: be arranged on the backboard of backlight module, this diaphragm detent mechanism includes: a diaphragm, have a long limit and a minor face, this diaphragm is to be sticked on this backboard with this minor face, be extended with a protuberance in this length limit, have a sealing perforate in this protuberance, this length limit and this minor face are to extend along a first direction and a second direction respectively; And an outside framework, being arranged at jointly on this backboard with this diaphragm, this outside framework is extended with a projection along a third direction, and this projection has one first peephole corresponding to this protuberance of this diaphragm in this projection one side; Wherein when this outside framework and this diaphragm arrangement are on this backboard, this projection extends in this sealing perforate along this third direction, this protuberance one side can be shown in this first peephole, and this projection limits this length limit of this diaphragm in the displacement of this third direction, avoids this diaphragm generation warpage.

The utility model is simple in structure, and is reasonable in design, can effectively avoid the diaphragm generation warpage of backlight module, guarantees the function of backlight module, has market value preferably.

Description of drawings

Fig. 1 is the diaphragm schematic diagram of known backlight module.

Fig. 2 is the schematic diagram that diaphragm engages with backboard in the known backlight module.

Fig. 3 is the schematic diagram of the diaphragm generation warpage of known backlight module.

Fig. 4 is the diaphragm schematic diagram that the utlity model has protuberance.

Fig. 5 is the disclosed outside framework schematic diagram of the utility model.

Fig. 6 is the partial schematic diagram of another angle of outside framework of Fig. 5.

Fig. 7 be diaphragm detent mechanism of the present utility model in conjunction with schematic diagram.

Fig. 8 is the schematic diagram of another angle of diaphragm detent mechanism of Fig. 7.

[primary clustering symbol description]

1 backlight module, 10,30 diaphragms

11,31 long limits, 12,32 minor faces

13,33 first holding sections, 14 grooves

20 backboards, 24 second holding sections

The 35 sealing perforates of 34 protuberances

40,50 outside frameworks, 41 first peepholes

42 second peepholes, 43 projections

100 diaphragm detent mechanisms, 341 first sides

342 second sides.

The specific embodiment

Please refer to Fig. 4, Fig. 4 is the schematic diagram of diaphragm 30 of the present utility model.Diaphragm 30 has long limit 31 and minor face 32, first holding section 33 that wherein on minor face 32, has the extending flute external form, can engage with second holding section on the backboard of backlight module, with the displacement of limiting diaphragm in X-direction and Y direction, the example of its specific embodiment and the 2nd figure is similar, and this part repeats no more.Diaphragm 30 has protuberance 34 on long limit 31, protuberance 34 has a sealing perforate 35, in addition, the long limit 31 of diaphragm 30 and minor face 32 respectively in the space Y direction and X-direction distribute, and diaphragm 30 can be ignored its thickness on the long relatively limit 31 of size of Z-direction and the size of minor face 32, illustrated X-direction among the embodiment wherein of the present utility model, Y direction and Z-direction are to explain to constitute the vertical each other coordinate direction in three-dimensional space, but in other embodiments, also can use three different each other and not necessarily mutually perpendicular axis of orientation explains.

Please refer to Fig. 5 and Fig. 6, wherein Fig. 5 is that schematic diagram, Fig. 6 of the disclosed outside framework 40 of the utility model are the partial schematic diagram of outside framework 40 another angles, and outside framework 40 is a glue frame.Outside framework 40 is used for after diaphragm 30 is sticked in backboard, is arranged on the diaphragm 30 again, with the displacement of further limiting diaphragm 30 in Z-direction, and can prevent that diaphragm 30 from the situation of warpage taking place.Outside framework 40 has a projection 43 in the position of the long limit of corresponding diaphragm 30 31 protuberances 34, and it extends along Z-direction.

Please refer to Fig. 7 and Fig. 8, wherein Fig. 7 is the schematic diagram of outside framework 40 in conjunction with the diaphragm detent mechanism 100 of diaphragm 30, and Fig. 8 is the schematic diagram of diaphragm detent mechanism 100 another angles.When outside framework 40 and diaphragm 30 were arranged on the backboard, the X-direction of diaphragm 30 and Y direction were subjected to the restriction of backboard and can be subjected to displacement.43 of the projections of outside framework 40 extend along Z-direction in the sealing perforate 35 of diaphragm 30 protuberances 34, because sealing perforate 35 structures for sealing, therefore the projection 43 that extends sealing perforate 35 except the long limit 31 of limiting diaphragm 30 the displacement of X-direction and Y direction, limited of the displacement (projection 43 along Z-direction extend the back board structure that can directly prop up diaphragm 30 belows) of long limit 31 in addition in Z-direction, therefore make the long limit 31 of diaphragm 30 carry, during high G value shock-testing, can not deviate from outside framework 40 so that the phenomenon of generation warpage.

Because on the assembly program of backlight module, generally be to be installed on the diaphragm 30 along outside framework 40 being stood with blind group as the angle of Fig. 8, because such setting angle makes assembler can't see the position of projection 43, therefore in order to make outside framework 40 can in installation process, convenient the aligning seal perforate 35 at the projection 43 of another side, have one first peephole 41 and one second peephole 41 respectively in projection 43 both sides of outside framework 40, it is for penetrating the perforate on outside framework 40 long limits, therefore when outside framework 40 will be installed on the diaphragm 30, first side 341 of the protuberance 34 of diaphragm 30 and second side 342 can be exposed at first peephole 41 and second peephole 42 respectively, as shown in Figure 8, but so the ease of assembly personnel confirm whether align sealing perforate 35 on the diaphragm 30 of projection 43.For example when first side 341 of the protuberance 34 of diaphragm 30 and center that second side 342 lays respectively at first peephole 41 and second peephole 42 (as Fig. 8), then can confirm projection 43 alignment sealing perforates 35, therefore effectively locating outer frame frame 40 is combined on the diaphragm 30.

Be noted that in addition, in preferred embodiment of the present utility model, see through two

peepholes

41,42 and confirm the position of diaphragm 30 protuberances 34 left and right sides 341,342 respectively, can make the process of assembling correctly assemble more efficiently, and in other embodiment of the utility model, also can use

single observation hole

41 or 42, the positioning action in the time of also can reaching assembling.In addition, the sealing preferred embodiment of perforate 35 in the utility model is rectangle, also is that rectangle projection 43, the first peepholes 41 and second peephole 42 with correspondingly-shaped also is rectangular perforation and be used for extending projections 43 in the sealing perforate 35.But the shape at these positions also can have other enforcement aspect, does not limit being required to be rectangle, in this special instruction.

The diaphragm detent mechanism that the utility model discloses, in backlight module after diaphragm is installed on the backboard and is subjected to backboard restriction X-direction and Y direction displacement, utilize of the displacement of the further limiting diaphragm of an outside framework in Z-direction, reach prevent diaphragm in the test or handling process generation warping phenomenon.Diaphragm has a protuberance in long limit, and protuberance has a sealing perforate, and outside framework has a projection that extends along Z-direction in the position of protuberance correspondence, extends in the sealing perforate with the displacement in Z-direction of the long limit of limiting diaphragm.Outside framework projection both sides have peephole in addition, when blind group of outside framework stands on diaphragm, see through the protuberance side of peephole observation diaphragm, with the assembling of correct positioning film detent mechanism.

The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.

Claims

1. the diaphragm detent mechanism of a backlight module, it is characterized in that: be arranged on the backboard of backlight module, this diaphragm detent mechanism includes:

One diaphragm, have a long limit and a minor face, this diaphragm is to be sticked on this backboard with this minor face, is extended with a protuberance in this length limit, have a sealing perforate in this protuberance, this length limit and this minor face are to extend along a first direction and a second direction respectively; And

One outside framework is arranged on this backboard jointly with this diaphragm, and this outside framework is extended with a projection along a third direction, and this projection has one first peephole corresponding to this protuberance of this diaphragm in this projection one side;

Wherein when this outside framework and this diaphragm arrangement are on this backboard, this projection extends in this sealing perforate along this third direction, this protuberance one side can be shown in this first peephole, and this projection limits this length limit of this diaphragm in the displacement of this third direction, avoids this diaphragm generation warpage.

2. diaphragm detent mechanism according to claim 1 is characterized in that: wherein this sealing perforate is a rectangle, and this projection is for cooperating the rectangle projection of this sealing hole shape.

3. diaphragm detent mechanism according to claim 1, it is characterized in that: wherein this outside framework has one second observation perforate in this projection opposite side, when this outside framework and this diaphragm arrangement were on this backboard, the relative opposite side of this protuberance can be shown in this second peephole.

4. diaphragm detent mechanism according to claim 3 is characterized in that: wherein this first peephole and this second peephole are the rectangle perforate.

5. diaphragm detent mechanism according to claim 1 is characterized in that: wherein this first direction, this second direction, this third direction are the direction that is perpendicular to one another.

6. diaphragm detent mechanism according to claim 1, it is characterized in that: wherein this minor face of this diaphragm has one first holding section, this backboard has one second holding section, this first holding section engages with this second holding section, this diaphragm is sticked on this backboard, and limits of the displacement of this diaphragm in this first direction and this second direction.

7. diaphragm detent mechanism according to claim 1 is characterized in that: wherein this outside framework is a glue frame.