CN218099878U

CN218099878U - Backlight module

Info

Publication number: CN218099878U
Application number: CN202222470136.1U
Authority: CN
Inventors: 黄磊; 姚君乐; 罗增昌; 叶海霞
Original assignee: WAI CHI OPTOELECTRONIC Ltd
Current assignee: WAI CHI OPTOELECTRONIC Ltd
Priority date: 2022-09-17
Filing date: 2022-09-17
Publication date: 2022-12-20
Anticipated expiration: 2032-09-17

Abstract

The application relates to the technical field of liquid crystal display, and particularly discloses a backlight module which comprises a rubber shell iron frame, an optical diaphragm and diaphragm fixing glue, wherein the optical diaphragm is arranged in the rubber shell iron frame, the rubber shell iron frame comprises an iron frame, a groove is formed in the iron frame, a diaphragm limiting lug is arranged on the optical diaphragm and is placed in the groove, and therefore the movement of the optical diaphragm on an X axis and a Y axis is limited and fixed; the diaphragm fixing glue is arranged between the optical diaphragm and the rubber shell iron frame, so that the movement of the optical diaphragm in the Z-axis direction is limited, the thickness of the backlight module is reduced by fixing the optical diaphragm through the diaphragm fixing glue, and the space occupancy rate of the backlight module is reduced. This application has the effect that reduces backlight unit's thickness when keeping optics diaphragm fixed.

Description

Backlight module

Technical Field

The application relates to the technical field of liquid crystal display, in particular to a backlight module.

Background

The backlight module is a key component in the liquid crystal display, and can provide sufficient light source with uniform brightness and distribution for the liquid crystal display so that the liquid crystal display can normally display images.

Among the backlight unit among the correlation technique, optics diaphragm fixed connection is glued on the frame with the backplate to the cooperation of optics diaphragm clearing hole and axle, and the cotton packing of rethread buffering bubble makes the optics diaphragm more firm with being connected of frame is glued to the backplate, prevents that the optics diaphragm from gluing the frame from the backplate and breaking away from to realize the fixed of optics diaphragm, but backlight unit among the correlation technique is adding the buffering bubble cotton back, and thickness is too big to lead to occupation space too big.

Therefore, the backlight module in the technical scheme has the defect of overlarge occupied space caused by overlarge thickness.

SUMMERY OF THE UTILITY MODEL

In order to reduce the thickness of the backlight module while keeping the optical film fixed, the application provides a backlight module.

The application provides a backlight unit adopts following technical scheme:

a backlight module includes:

the rubber shell iron frame comprises an iron frame, wherein a groove is formed in the iron frame;

the optical diaphragm is arranged in the rubber shell iron frame, a diaphragm limiting lug is arranged on the optical diaphragm, and the diaphragm limiting lug is matched with the groove;

and the membrane fixing glue is arranged between the optical membrane and the rubber shell iron frame and used for limiting the movement of the optical membrane in the Z-axis direction.

Based on above-mentioned technical scheme, diaphragm spacing lug on the optics diaphragm and the recess looks adaptation on the gluey shell chase, the recess is used for the epaxial motion of spacing fixed optics diaphragm in X axle and Y, avoid the optics diaphragm to appear the aversion phenomenon, fix the diaphragm spacing lug on the optics diaphragm on gluey shell chase through the diaphragm fixed glue, thereby make the optics diaphragm fix on gluey shell chase, the motion of optics diaphragm in the Z axle direction has been restricted, fix the thickness that the optics diaphragm has reduced backlight unit through the diaphragm fixed glue simultaneously, make backlight unit's space occupancy reduce.

Preferably, the iron frame inboard is provided with the inner shell, the height of inner shell with the recess flushes mutually, the diaphragm fixed glue corresponds the inner shell setting, so that the fixed of diaphragm fixed glue.

Based on above-mentioned technical scheme, the height and the recess of inner shell flush mutually to be used for placing the diaphragm fixed glue, be convenient for simultaneously placing of optics diaphragm.

Preferably, a diffusion plate is arranged between the optical diaphragm and the rubber casing iron frame, a limiting lug is arranged on the diffusion plate and matched with the groove, diffusion plate fixing glue is arranged between the diffusion plate and the rubber casing iron frame and used for limiting the movement of the diffusion plate in the Z-axis direction.

Based on above-mentioned technical scheme, the diffuser plate can make the light that the light source sent scatter the back and enter into optical diaphragm, spacing lug and recess looks adaptation on the diffuser plate, and the recess restriction diffuser plate is at the ascending motion of X axle and Y axle direction, and the diffuser plate is fixed gluey and is fixed the diffuser plate on gluing the shell chase to restriction diffuser plate is at the epaxial motion of Z.

Preferably, the light incident surface of the diffusion plate is a mirror surface, and the light emergent surface of the diffusion plate is a ground surface.

Based on above-mentioned technical scheme, the income plain noodles of diffuser plate sets up to the mirror surface, and it sets up to the mill flour to go out the plain noodles for the diffuser plate can be with the more scattered of light that the light source distributed out, thereby the phenomenon of dark check appears when improving backlight unit group and using, makes backlight unit's display effect better.

Preferably, the inner shell includes a bottom plate, the bottom plate is provided with a heat conducting glue and a light source assembly, and the heat conducting glue is used for dissipating heat generated by the light source assembly through the bottom plate.

Based on above-mentioned technical scheme, the heat-conducting glue is fixed the light source subassembly in gluing the shell chase, and when the light source subassembly generated heat, the heat-conducting glue can also be exported outside backlight unit with the heat that the light source subassembly produced.

Preferably, the light source subassembly includes lamp plate, lamp shade and lens plate, the lamp shade with the lens plate is connected and is the integration setting, be provided with the fixed glue on the lamp plate, the lamp plate with the lamp shade passes through the fixed connection of fixed glue.

Based on above-mentioned technical scheme, lamp shade and lens board integrated into one piece, the lamp plate passes through the fixed glue and bonds mutually with the lamp shade to realize the equipment of light source subassembly.

Preferably, be provided with LED paster lamp on the lamp plate, seted up on the fixed glue and dodged the hole, dodge the hole with LED paster lamp looks adaptation.

Based on above-mentioned technical scheme, be provided with on the fixed glue and dodge the hole, dodge the hole and LED paster lamp's big or small looks adaptation to avoid the fixed glue to cause the influence to the light that LED paster lamp gived off.

Preferably, the rubber shell iron frame is sleeved with a rubber shell, the rubber shell is provided with a mounting hole, the rubber shell iron frame is provided with a boss, and the boss is matched with the mounting hole.

Based on the technical scheme, the boss is matched with the mounting hole, so that the rubber shell is conveniently sleeved on the rubber shell iron frame.

Preferably, the backlight module further comprises edge-covering glue, one part of the edge-covering glue is adhered to and covered on the outer side of the glue shell, and the other part of the edge-covering glue is adhered to the bottom plate.

Based on above-mentioned technical scheme, the partly and gluey shell of borduring glue are bonded mutually, and another part bonds mutually with gluey shell chase for glue shell and gluey shell chase be connected more firmly.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the film limiting lugs are placed in the grooves, so that the movement of the optical film on an X axis and a Y axis is limited, the film fixing glue is used for fixing the optical film on the rubber shell iron frame, the movement of the optical film in a Z axis direction is limited, the optical film is prevented from shifting, meanwhile, the thickness of the backlight module is reduced by fixing the optical film through the film fixing glue, and the space occupancy rate of the backlight module is reduced;

2. the arrangement of the inner shell is convenient for placing the membrane fixing glue;

3. the boss is matched with the mounting hole so as to be convenient for connecting the rubber shell iron frame with the rubber shell.

Drawings

Fig. 1 is a schematic perspective view illustrating a backlight module according to an embodiment of the present application;

fig. 2 is a schematic diagram illustrating a partial explosion structure of a backlight module according to an embodiment of the present disclosure, which is mainly used for illustrating a connection manner between an optical film and a rubber-shell bezel;

fig. 3 is a schematic view illustrating a partial structure of a backlight module according to an embodiment of the present disclosure, which is mainly used for illustrating a connection manner between a light source assembly and a rubber-shell iron frame;

fig. 4 is a schematic view of a partial structure of a backlight module according to an embodiment of the present application, which is mainly used for showing a connection manner between a rubber case iron frame and a rubber case.

Description of reference numerals: 10. a rubber shell iron frame; 11. an iron frame; 111. a first side plate; 112. a second side plate; 113. a third side plate; 114. a placement chamber; 12. an inner shell; 121. a base plate; 122. a side plate; 13. a first groove; 14. a second groove; 15. a third groove; 16. a boss; 20. an optical film; 21. a light-diffusing film; 22. a lower brightness enhancement film; 23. a privacy film; 24. a first diaphragm limiting lug; 25. a second diaphragm limiting lug; 30. fixing glue for the membrane; 40. a diffusion plate; 41. a first limit lug; 42. a second limiting lug; 43. a third limiting lug; 44. fixing glue for the diffusion plate; 50. heat conducting glue; 60. a light source assembly; 61. a lamp panel; 611. an LED patch lamp; 62. a lamp shade; 63. a lens plate; 64. fixing glue; 641. avoiding holes; 70. a rubber shell; 71. mounting holes; 80. edge covering glue; 90. a PCB component; 91. and (4) a side film.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a backlight module.

Referring to fig. 1, the backlight module includes a rubber case iron frame 10 and a rubber case 70, the rubber case iron frame 10 is connected with the rubber case 70, a placing cavity 114 is formed in the rubber case iron frame 10, a diffusion plate 40 and an optical film 20 are sequentially arranged in the placing cavity 114, a film fixing adhesive 30 is arranged on the optical film 20, the optical film 20 is connected with the rubber case iron frame 10 through the film fixing adhesive 30, and the thickness of the backlight module is reduced through the fixation of the film fixing adhesive 30, so that the space occupancy rate of the backlight module is reduced.

Referring to fig. 1 and 2, the plastic shell chase 10 includes inner shell 12 and chase 11, chase 11 sets up in the outside of inner shell 12, and inner shell 12 adopts white plastic to mould plastics and forms, and inner shell 12 and chase 11 become the integration setting, reducible equipment process, and lifting efficiency also can avoid chase 11 to absorb light simultaneously to reduce the loss of light source subassembly 60 luminance.

Referring to fig. 2, 3 and 4, the iron frame 11 includes two first side plates 111, two second side plates 112 and two third side plates 113, two first grooves 13 are formed on the first side plates 111, four second grooves 14 are formed on the second side plates 112, two third grooves 15 are formed on the third side plates 113, a first limiting lug 41, a second limiting lug 42 and a third limiting lug 43 are arranged on the diffusion plate 40, the first limiting lug 41 is arranged in the first groove 13, the second limiting lug 42 is arranged in the second groove 14, and the third limiting lug 43 is arranged in the third groove 15, so as to limit the movement of the diffusion plate 40 in the X-axis and Y-axis directions.

Referring to fig. 2, a diffusion plate fixing glue 44 is adhered to the diffusion plate 40, the diffusion plate fixing glue 44 is disposed at one side of the third limiting lug 43, and the diffusion plate 40 is adhered to the rubber case iron frame 10 through the diffusion plate fixing glue 44, so that the movement of the diffusion plate 40 in the Z-axis direction is limited, and the position of the diffusion plate 40 is prevented from being shifted. Wherein the income plain noodles of diffuser plate 40 sets up to the mirror surface, and the play plain noodles sets up to the mill flour for light passes through more scattering that diffuser plate 40 beaten, thereby improves backlight unit and appears dark phenomenon of check when using.

Referring to fig. 2 and 4, the inner case 12 includes a bottom plate 121 and four side plates 122, the side plates 122 are fixedly disposed at the peripheral edges of the bottom plate 121, and the height of the side plates 122 is the same as the height of the grooves on the iron frame 11 to facilitate fixing of the diffusion plate fixing glue 44.

Referring to fig. 2, the optical film 20 is provided with a first film stopper lug 24 and a second film stopper lug 25, the first film stopper lug 24 being placed in the first groove 13, and the second film stopper lug 25 being placed in the second groove 14, thereby restricting the movement of the optical film 20 in the X-axis and Y-axis directions. The film fixing glue 30 is disposed on the second film limiting lug 25, and the optical film 20 is adhered to the diffusion plate 40 through the film fixing glue 30, so that the movement of the optical film 20 in the Z-axis direction is limited, and the position of the optical film 20 is prevented from being shifted.

Referring to fig. 1, the optical film 20 includes a light diffusing film 21, a lower light diffusing film 22 and a peep-proof film 23, the light diffusing film 21, the lower light diffusing film 22 and the peep-proof film 23 are sequentially arranged on the diffusion plate 40 from bottom to top, the shapes of the light diffusing film 21, the lower light diffusing film 22 and the peep-proof film 23 are completely the same, a film fixing glue 30 is arranged between the light diffusing film 21 and the lower light diffusing film 22 and the peep-proof film 23, the light diffusing film 21, the lower light diffusing film 22 and the peep-proof film 23 are connected through the film fixing glue 30, the light diffusing film 21 is connected with the diffusion plate 40 through the film fixing glue 30, and therefore the thickness of the backlight module is reduced.

Referring to fig. 1 and 4, a heat conductive adhesive 50, a PCB 90 and a light source assembly 60 are disposed between the diffusion plate 40 and the bottom plate 121 of the inner case 12, the heat conductive adhesive 50 is adhered to the bottom plate 121 of the inner case 12, the PCB 90 is adhered to the heat conductive adhesive 50, the light source assembly 60 is disposed above the PCB 90, and heat generated when the light source assembly 60 emits light is emitted from the backlight module by the heat conductive adhesive 50.

Referring to fig. 3, light source subassembly 60 includes lamp plate 61, lamp shade 62 and lens plate 63, and lamp shade 62 and the integration of lens plate 63 set up, and lamp plate 61 is connected with lamp shade 62 through fixed glue 64, is provided with a plurality of LED paster lamps 611 on the lamp plate 61, has seted up a plurality of holes of dodging 641 on the fixed glue 64, dodges hole 641 and the corresponding setting of LED paster lamp 611 to avoid fixed glue 64 to cause the influence to the light that LED paster lamp 611 gived off.

Referring to fig. 4, a plurality of bosses 16 are arranged on the iron frame 11, a plurality of mounting holes 71 are arranged on the rubber casing 70, the bosses 16 are matched with the mounting holes 71, so that the rubber casing 70 is connected with the rubber casing iron frame 10, an edge covering rubber 80 is arranged on the rubber casing iron frame 10, one part of the edge covering rubber 80 is bonded with the bottom of the rubber casing iron frame 10, the other part of the edge covering rubber 80 is bonded with the rubber casing 70, and the connection between the rubber casing iron frame 10 and the rubber casing 70 is more stable.

Referring to fig. 1, a side film 91 is disposed on an inner peripheral wall of the plastic-shell iron frame 10, and the side film 91 is used for limiting light of the light source assembly 60 from being emitted from the periphery.

The embodiment of the application provides a backlight module, which has the following implementation principle: glue shell chase 10 and be connected with gluey shell 70, diaphragm limit lug and recess looks adaptation, thereby restriction diffuser plate 40 and optical diaphragm 20 are at the ascending motion of X axle and Y axle direction, prevent that diffuser plate 40 and optical diaphragm 20 position from taking place the skew, diffuser plate 40 in the gluey shell chase 10 is fixed on gluing shell chase 10 through diffuser plate fixed glue 44, membrane 21 that shines, it is connected through membrane fixed glue 30 to add between membrane 22 and the peep-proof membrane 23 down, be connected through membrane fixed glue 30 between diffuser plate 40 and the membrane 21 that shines, thereby backlight unit's thickness has been reduced, make backlight unit's space occupancy reduce.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A backlight module, comprising:

the rubber shell iron frame (10) comprises an iron frame (11), and a groove is formed in the iron frame (11);

an optical membrane (20) mounted in the rubber-shell iron frame (10), a diaphragm limiting lug is arranged on the optical diaphragm (20), and the diaphragm limiting lug is matched with the groove;

the diaphragm fixing glue (30) is arranged between the optical diaphragm (20) and the rubber shell iron frame (10), and the diaphragm fixing glue (30) is used for limiting the movement of the optical diaphragm (20) in the Z-axis direction.

2. The backlight module according to claim 1, wherein an inner case (12) is disposed inside the bezel (11), the inner case (12) has a height flush with the groove, and the film fixing glue (30) is disposed corresponding to the inner case (12) to facilitate fixing of the film fixing glue (30).

3. The backlight module according to claim 1, wherein a diffusion plate (40) is disposed between the optical film (20) and the plastic case bezel (10), a limiting lug is disposed on the diffusion plate (40) and is adapted to the groove, a diffusion plate fixing glue (44) is disposed between the diffusion plate (40) and the plastic case bezel (10), and the diffusion plate fixing glue (44) is used for limiting the movement of the diffusion plate (40) in the Z-axis direction.

4. The backlight module as claimed in claim 3, wherein the light incident surface of the diffusion plate (40) is a mirror surface, and the light emergent surface of the diffusion plate (40) is a ground surface.

5. The backlight module as claimed in claim 2, wherein the inner case (12) comprises a bottom plate (121), the bottom plate (121) is provided with a heat conductive adhesive (50) and a light source assembly (60), and the heat conductive adhesive (50) is used for dissipating heat generated by the light source assembly (60) through the bottom plate (121).

6. The backlight module according to claim 5, wherein the light source assembly (60) comprises a lamp panel (61), a lampshade (62) and a lens plate (63), the lampshade (62) is connected with the lens plate (63) to be integrally arranged, a fixing glue (64) is arranged on the lamp panel (61), and the lamp panel (61) is fixedly connected with the lampshade (62) through the fixing glue (64).

7. The backlight module according to claim 6, wherein the lamp panel (61) is provided with an LED patch lamp (611), the fixing glue (64) is provided with an avoiding hole (641), and the avoiding hole (641) is matched with the LED patch lamp (611).

8. The backlight module according to claim 1, wherein the rubber case (70) is sleeved on the rubber case iron frame (10), the rubber case (70) is provided with a mounting hole (71), the rubber case iron frame (10) is provided with a boss (16), and the boss (16) is matched with the mounting hole (71).

9. The backlight module according to claim 8, further comprising an edge-covering adhesive (80), wherein a portion of the edge-covering adhesive (80) is adhered to cover the outer side of the adhesive cover (70), and another portion of the edge-covering adhesive (80) is adhered to the adhesive cover bezel (10).