CN205560488U - Backlight module and display device - Google Patents

Backlight module and display device Download PDF

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Publication number
CN205560488U
CN205560488U CN201620339484.7U CN201620339484U CN205560488U CN 205560488 U CN205560488 U CN 205560488U CN 201620339484 U CN201620339484 U CN 201620339484U CN 205560488 U CN205560488 U CN 205560488U
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China
Prior art keywords
backlight module
brightness enhancement
enhancement film
glue
line
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Active
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CN201620339484.7U
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Chinese (zh)
Inventor
李兴
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Tianma Microelectronics Co Ltd
Shanghai AVIC Optoelectronics Co Ltd
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Tianma Microelectronics Co Ltd
Shanghai AVIC Optoelectronics Co Ltd
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Priority to CN201620339484.7U priority Critical patent/CN205560488U/en
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Abstract

The utility model discloses a backlight module and display device, wherein, backlight unit includes light guide plate, diffusion piece, a brightness enhancement film and printed circuit board, the diffusion piece is located the first surface of light guide plate, a brightness enhancement film lie in the diffusion piece deviate from the light guide plate on the surface, backlight unit still includes first glue film, first glue film is pasted in a diffusion piece and a brightness enhancement film to and on the printed circuit board. The utility model provides a backlight module and display device is favorable to improving the stability of optics diaphragm among the backlight unit, improves backlight unit's light -emitting effect, promotes display panel's display effect.

Description

Backlight module and display device
Technical field
This utility model relates to Display Technique field, particularly relates to a kind of backlight module and comprises this back of the body The display device of light module.
Background technology
In recent years, along with the development of Display Technique, kinds of displays is arisen at the historic moment, such as liquid crystal display Device, OLED etc., be increasingly becoming the main product showing industry at present, by consumer Generally favor, accordingly, with respect to one of the research also study hotspot becoming sciemtifec and technical sphere of display.
In the display such as non-autonomous luminescences such as liquid crystal displays, arranging backlight module is that display floater carries For light, usually, backlight module includes backlight, light guide plate and blooming piece etc., but, During display floater assembling, transport, during especially dropping, it is susceptible to diffusion sheet, increasing The displacement of the blooming pieces such as bright film, thus the light-out effect of backlight module is impacted, and then impact is aobvious Show the display effect of panel;On the other hand, the light leak between light guide plate incident side and blooming piece edge Problem is also the key factor affecting backlight module light-out effect, therefore, improves light in backlight module Learn the stability of diaphragm, improve the light-out effect of backlight module, promote the display effect of display floater, be One of display field problem demanding prompt solution.
Utility model content
In view of this, this utility model provides a kind of backlight module, and comprises the display of this backlight module Device, in order to solve the problems referred to above, improves the stability of blooming piece, it is to avoid because of the displacement of blooming piece And the impact of the display effect on display device caused.
The one side of this utility model embodiment provides a kind of backlight module, backlight module include light guide plate, Diffusion sheet, the first brightness enhancement film and printed circuit board (PCB);Diffusion sheet is positioned on the first surface of light guide plate;The One brightness enhancement film is positioned on the surface deviating from light guide plate of diffusion sheet;Backlight module also includes the first glue-line;The One glue-line is pasted on diffusion sheet and the first brightness enhancement film, and on printed circuit board (PCB).
The another aspect of this utility model embodiment provides a kind of display device, including above-mentioned backlight module.
By foregoing description, backlight module that this utility model embodiment provides and display device, its In, backlight module includes one first glue-line, the first glue-line be pasted on simultaneously diffusion sheet, the first brightness enhancement film with And on printed circuit board (PCB), diffusion sheet, the first brightness enhancement film and printed circuit board (PCB) are played fixation, from And diffusion sheet can be avoided, be shifted between the first brightness enhancement film and printed circuit board (PCB), to backlight module Light-out effect impact;Meanwhile, the first glue-line connects printed circuit board (PCB) and diffusion sheet and the first increasing Bright film, desirably prevents at printed circuit board edge and the blooming piece limit such as diffusion sheet and the first brightness enhancement film There is light leak between edge, improve the light-out effect of backlight module.Therefore, this utility model embodiment The backlight module provided and display device, be conducive to improving the stability of blooming piece in backlight module, change The light-out effect of kind backlight module, promotes the display effect of display floater.
Accompanying drawing explanation
Fig. 1 is the partial schematic diagram of a kind of backlight module that this utility model embodiment provides;
Fig. 2 be in Fig. 1 backlight module along the sectional view in A-A ' direction;
Fig. 3 is the schematic diagram of a kind of display device that this utility model embodiment provides.
Detailed description of the invention
Understandable for enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent from, below will knot Close drawings and Examples this utility model is described further.
It should be noted that elaborate detail in the following description so that fully understanding that this practicality is new Type.But this utility model can be different from alternate manner described here implement with multiple, this area Technical staff can do similar popularization in the case of this utility model intension.Therefore this practicality is new Type is not limited by following public detailed description of the invention.
The one side of this utility model embodiment provides a kind of backlight module, with reference to Fig. 1 and Fig. 2, Fig. 1 is The partial schematic diagram of a kind of backlight module that this utility model embodiment provides, Fig. 2 is backlight mould in Fig. 1 Group is along the sectional view in A-A ' direction.Wherein, backlight module includes light guide plate 10, diffusion sheet 20, first Brightness enhancement film 31 and printed circuit board (PCB) 40, diffusion sheet 20 is positioned on the first surface 101 of light guide plate 10, First brightness enhancement film 31 is positioned on the surface deviating from light guide plate 10 of diffusion sheet 20, as shown in Figure 2;The back of the body Light module also include the first glue-line 50, the first glue-line 50 be pasted on diffusion sheet 20 and the first brightness enhancement film 31 with And on printed circuit board (PCB) 40.
Additionally, as shown in Figure 2, backlight module can also include that framework 110, framework 110 can include Glue frame 111 and underframe 112, underframe 112 can be metal framework, it is also possible to for the framework of other materials, In the present embodiment, backlight module can also only include glue frame, or only includes metal framework, or other Frame structure, this is not particularly limited by the present embodiment.In the present embodiment, light guide plate 10 can be flat board Formula light guide plate, it is also possible to for Wedge shape light conduction board, the most this is not made at this particular determination.It addition, backlight mould Group can also include the reflector plate 120 between light guide plate 10 and underframe 112, and reflector plate 120 is to warp The light crossing light guide plate and directive underframe 112 reflects so that it is penetrate towards the light direction of backlight module Go out.
By foregoing description, in the present embodiment, backlight module includes the first glue-line, and the first glue-line is same Time be pasted on diffusion sheet, the first brightness enhancement film and printed circuit board (PCB), to diffusion sheet, the first brightness enhancement film with And printed circuit board (PCB) plays fixation, such that it is able to avoid diffusion sheet, the first brightness enhancement film and printing electricity It is shifted between the plate of road, the light-out effect of backlight module is impacted;Meanwhile, the first glue-line connects Printed circuit board (PCB) and diffusion sheet and the first brightness enhancement film, desirably prevent at printed circuit board edge and diffusion Light leak occurs between the blooming piece edges such as sheet and the first brightness enhancement film, and improve backlight module goes out light Effect.
In the present embodiment, the first brightness enhancement film 31 can be prismatic lens, and there is micro-prism structure on prismatic lens surface, Light is scattered by the light of backlight outgoing through prismatic lens, micro-prism structure, in addition backlight system The Circulation of system, finally makes light collection in positive apparent direction outgoing, thus reaches brightening effect.This Outward, the first brightness enhancement film 31 can also have brightening effect for multi-functional prismatic lens, reflective polaroid etc. Diaphragm, the present embodiment contrast is not particularly limited.It addition, in the present embodiment, diffusion sheet 20 can also claim For diffusion sheet, diffusion sheet 20 can include base material and scattering particles two parts, and base material can be light transmission rate High material, such as PET/PC/PMMA etc., scattering particles is scattered in base material, the light of backlight Through diffusion sheet, passing repeatedly through the medium that base material is different with scattering particles the two refractive index, generation is many Secondary refraction, reflection and scattering phenomenon, thus provide uniform area source for display screen.
Further, in the present embodiment, backlight module also includes that backlight 130, backlight 130 are packaged in On printed circuit board (PCB) 40, backlight 130 is oppositely arranged with the incident side 102 of light guide plate 10, and printing Circuit board 40 is pasted on first surface 101 and the glue frame 111 of light guide plate 10 by adhesive tape 401. Printed circuit board (PCB) 40 provides circuit for backlight, is connected with external circuit, thinks that backlight provides electric current, Printed circuit board (PCB) 40 can be flexible PCB, it is also possible to for other circuit boards, the present embodiment contrast is not made Particular determination.It addition, in the present embodiment, backlight 130 can be light emitting diode, can also be to send out Luminous diode chip, nano-wire LED and light emitting diode with quantum dots etc., the present embodiment is to this Also it is not particularly limited.
Optionally, as shown in Figures 1 and 2, in the present embodiment, printed circuit board (PCB) 40 and diffusion sheet 20 It is respectively positioned on the first surface 101 of light guide plate 10, for ensureing that each blooming piece and printed circuit board (PCB) have foot Enough spaces, on the first surface 101 of light guide plate 10, have between printed circuit board (PCB) 40 and diffusion sheet 20 Having first area, the first glue-line 50 covers this first area, and light is entered by light guide plate incident side 102 and leads After tabula rasa, in this first area, light leak can occur, affect the light-out effect of backlight module, the first glue-line 50 Cover this first area, block the light of this first area of directive, it is to avoid this first area occurs light leak, Be conducive to improving the light-out effect of backlight module.
In the present embodiment, optionally, the first glue-line 50 can be black and white double faced adhesive tape, the first glue-line 50 Flour is towards diffusion sheet 20 and the first brightness enhancement film 31 and printed circuit board (PCB) 40, the flour of black and white double faced adhesive tape The light penetrated by light guide plate can be reflected and re-use, reduce fiber-loss.
In the present embodiment, backlight module also includes shading rubber belt 140, shading rubber belt be pasted on glue frame 111 with And on printed circuit board (PCB) 40, and the black flour of the first glue-line 50 is at least partly pasted on shading rubber belt 140.
In the optional embodiment of other of the present embodiment, the first glue-line 50 can also be black glue, Or other colloids, being at least partly pasted on shading rubber belt 140 of the first glue-line 50 so that glue frame 111, Printed circuit board (PCB) 40 and diffusion sheet 20 and the first brightness enhancement film 31 are all fixed, and desirably prevent each diaphragm It is shifted over.
Further, in the present embodiment, for ensureing diffusion sheet 20 He that lamination is arranged by the first glue-line 50 First brightness enhancement film 31 is all pasted, and as shown in Figure 2, the first brightness enhancement film 31 is being leaned on diffusion sheet 20 Stepped arrangement at nearly first glue-line 50, diffusion sheet 20 is the at the end face at the first glue-line 50 End face 201, the first brightness enhancement film 31 is the second end face 302 at the end face at the first glue-line 50, the Between end face 201 and the second end face 302, X has the first predeterminable range L1 in the first direction, herein, First direction X is for being parallel to diffusion sheet 20 place plane, and is perpendicular to the first end face 201 and/or second The direction of end face 302.Existence because of L1 so that the first glue-line 50 can paste diffusion sheet 20 He simultaneously First brightness enhancement film 31, it is to avoid the two displacement.
Optionally, in the present embodiment, the first predeterminable range L1 is in the range of 0.1mm~1mm, when first When predeterminable range L1 is less than 0.1mm, the first predeterminable range L1 is the shortest, it is impossible to ensure the first glue-line 50 By diffusion sheet 20 and the first brightness enhancement film 31 firm pasting;When the first predeterminable range L1 is more than 1mm, Zonal ray between first end face 201 and the second end face 302 is not by brightness enhancement film or by the first glue-line 50 cover so that the light-out effect in this region is affected, thus have impact on display effect, study people Member is drawn by test of many times, when the first predeterminable range L1 is in the range of 0.1mm~1mm, it is possible to There is provided preferably while guarantee the first glue-line 50 is by diffusion sheet 20 and the first brightness enhancement film 31 firm pasting Display effect.
It addition, optional, in the present embodiment, backlight module also includes the second brightness enhancement film 32, the second blast Film 32 is positioned at the first brightness enhancement film 31 and deviates from the surface of diffusion sheet 20, and the second brightness enhancement film 32 can also be The film material such as prismatic lens or multi-functional prismatic lens, the present embodiment contrast is also not particularly limited.Further, Second brightness enhancement film 32 and the first brightness enhancement film 31 are in stepped arrangement at the first glue-line 50, and second increases Bright film 32 is the 3rd end face 303 at the end face at the first glue-line 50, the second of the first brightness enhancement film 31 Between end face 302 and the 3rd end face 303 of the second brightness enhancement film 32 in the first direction X have second preset away from From L2.
Optionally, in the present embodiment, the second predeterminable range L2 is in the range of 0.1mm~1mm, when second When predeterminable range L2 is less than 0.1mm, the second predeterminable range L2 is the shortest, it is impossible to ensure the first glue-line 50 By the first brightness enhancement film 31 firm pasting;When the first predeterminable range L1 is more than 1mm, the second end face 302 And the zonal ray between the 3rd end face 303 is by the second brightness enhancement film so that this region go out light efficiency Fruit is affected, thus have impact on display effect, and research worker is drawn by test of many times, when second is pre- If distance L2 is in the range of 0.1mm~1mm, it is possible to ensureing the first brightness enhancement film 31 firm pasting Preferably display effect is provided simultaneously.
The another aspect of this utility model embodiment also provides for a kind of display device, including any of the above-described enforcement Backlight module described by mode.
It is the schematic diagram of a kind of display device that this utility model embodiment provides with reference to Fig. 3, Fig. 3, wherein, Display device 100 includes the backlight module described by any of the above-described embodiment.
Above content be combine that this utility model made by concrete preferred implementation the most specifically Bright, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.For this utility model institute For belonging to the those of ordinary skill of technical field, without departing from the concept of the premise utility, also may be used To make some simple deduction or replace, protection domain of the present utility model all should be considered as belonging to.

Claims (10)

1. a backlight module, it is characterised in that
Described backlight module includes light guide plate, diffusion sheet, the first brightness enhancement film and printed circuit board (PCB);
Described diffusion sheet is positioned on the first surface of described light guide plate;
Described first brightness enhancement film is positioned on the surface deviating from described light guide plate of described diffusion sheet;
Described backlight module also includes the first glue-line;
Described first glue-line is pasted on described diffusion sheet and described first brightness enhancement film, and described printed circuit On plate.
Backlight module the most according to claim 1, it is characterised in that described backlight module also includes Backlight, described backlight is packaged on described printed circuit board (PCB), described backlight and described light guide plate Incident side is oppositely arranged, and described printed circuit board (PCB) is pasted on the first surface of described light guide plate.
Backlight module the most according to claim 1, it is characterised in that described first glue-line covers institute State the district between described printed circuit board (PCB) and described diffusion sheet and described first brightness enhancement film on light guide plate Territory.
Backlight module the most according to claim 1, it is characterised in that described first glue-line is black and white Double faced adhesive tape, the flour of described first glue-line is towards described diffusion sheet and described first brightness enhancement film and described print Printed circuit board.
Backlight module the most according to claim 4, it is characterised in that described backlight module also includes Shading rubber belt, described shading rubber belt is pasted on described printed circuit board (PCB), and the black flour of described first glue-line Towards described shading rubber belt and be at least partly pasted on described shading rubber belt.
Backlight module the most according to claim 1, it is characterised in that described first glue-line is black glue, Described backlight module also includes that shading rubber belt, the one side of described first glue-line are at least partly pasted on described screening Light adhesive tape.
Backlight module the most according to claim 1, it is characterised in that described first brightness enhancement film and institute Stating diffusion sheet stepped arrangement at close described first glue-line, described diffusion sheet is near described first End face at glue-line is the first end face, and described first brightness enhancement film at the end face at described first glue-line is Second end face, has the first predeterminable range between described first end face and described second end face in the first direction.
Backlight module the most according to claim 7, it is characterised in that described backlight module also includes Second brightness enhancement film, described second brightness enhancement film is positioned at described first brightness enhancement film and deviates from the surface of described diffusion sheet.
Backlight module the most according to claim 8, it is characterised in that described second brightness enhancement film and institute Stating the stepped arrangement at close described first glue-line of the first brightness enhancement film, the second brightness enhancement film is near described End face at first glue-line is the 3rd end face, described second end face and described second of described first brightness enhancement film Along described first direction, there is the second predeterminable range between described 3rd end face of brightness enhancement film.
10. a display device, it is characterised in that include the backlight described in claim 1-9 any one Module.
CN201620339484.7U 2016-04-21 2016-04-21 Backlight module and display device Active CN205560488U (en)

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Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105807492A (en) * 2016-05-24 2016-07-27 京东方科技集团股份有限公司 Backlight module and display device
CN106896582A (en) * 2017-04-25 2017-06-27 武汉华星光电技术有限公司 Backlight module and display
CN107037634A (en) * 2017-06-26 2017-08-11 武汉天马微电子有限公司 Display device
CN108150896A (en) * 2018-01-31 2018-06-12 广东欧珀移动通信有限公司 Electronic device and its backlight module
CN108286681A (en) * 2018-01-31 2018-07-17 广东欧珀移动通信有限公司 Electronic device and its display module, backlight module
CN108302385A (en) * 2018-01-31 2018-07-20 广东欧珀移动通信有限公司 A kind of backlight module and electronic device
CN108302386A (en) * 2018-01-31 2018-07-20 广东欧珀移动通信有限公司 Electronic device and its display module, backlight module
CN109164635A (en) * 2018-09-20 2019-01-08 厦门天马微电子有限公司 Backlight module and its manufacturing method and display device
CN109459890A (en) * 2018-12-25 2019-03-12 厦门天马微电子有限公司 Backlight module and display device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105807492A (en) * 2016-05-24 2016-07-27 京东方科技集团股份有限公司 Backlight module and display device
CN106896582A (en) * 2017-04-25 2017-06-27 武汉华星光电技术有限公司 Backlight module and display
CN107037634A (en) * 2017-06-26 2017-08-11 武汉天马微电子有限公司 Display device
CN108150896A (en) * 2018-01-31 2018-06-12 广东欧珀移动通信有限公司 Electronic device and its backlight module
CN108286681A (en) * 2018-01-31 2018-07-17 广东欧珀移动通信有限公司 Electronic device and its display module, backlight module
CN108302385A (en) * 2018-01-31 2018-07-20 广东欧珀移动通信有限公司 A kind of backlight module and electronic device
CN108302386A (en) * 2018-01-31 2018-07-20 广东欧珀移动通信有限公司 Electronic device and its display module, backlight module
CN109164635A (en) * 2018-09-20 2019-01-08 厦门天马微电子有限公司 Backlight module and its manufacturing method and display device
CN109459890A (en) * 2018-12-25 2019-03-12 厦门天马微电子有限公司 Backlight module and display device

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