CN108019668A - A kind of backlight module and electronic device - Google Patents

A kind of backlight module and electronic device Download PDF

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Publication number
CN108019668A
CN108019668A CN201810104823.7A CN201810104823A CN108019668A CN 108019668 A CN108019668 A CN 108019668A CN 201810104823 A CN201810104823 A CN 201810104823A CN 108019668 A CN108019668 A CN 108019668A
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CN
China
Prior art keywords
arranged
light
backlight module
diffusion
diffusion barrier
Prior art date
Application number
CN201810104823.7A
Other languages
Chinese (zh)
Inventor
陆忠恒
Original Assignee
广东欧珀移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to CN201810104823.7A priority Critical patent/CN108019668A/en
Publication of CN108019668A publication Critical patent/CN108019668A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/20Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape

Abstract

This application discloses a kind of backlight module and electronic device.Backlight module includes:Light guide plate, including incidence surface and light-emitting surface;Light source, is arranged on incidence surface side;Even optical element, including diffusion barrier, the first bright enhancement film and the second bright enhancement film being successively set on light-emitting surface, even optical element are located in non-display area close to one end of incidence surface;Light shield layer, is arranged in non-display area, and is arranged between light guide plate and diffusion barrier, and is arranged between diffusion barrier and the first bright enhancement film.Therefore in the case where reducing the width for the non-display area that backlight module takes backlight module can be avoided the phenomenon of light leak occur.

Description

A kind of backlight module and electronic device

Technical field

This application involves the field of backlights of electronic device, more particularly to a kind of backlight module and electronic device.

Background technology

At present, with the development of science and technology, the electronic device such as smart mobile phone is increasingly into necessity for people's lives.

Backlight module is the important component of electronic device, and the backlight module of the portable electron device such as smart mobile phone leads at present Frequently with side entrance back module, i.e., the light that light source is sent injects light guide plate from light guide plate side, is electricity after light guide plate leaded light The display panel of sub-device provides backlight, and the light source and some relevant structures yet with this side entrance back module need The side of light guide plate is arranged on, therefore, occupies larger non-display area, the realization for being unfavorable for narrow frame and shielding comprehensively, such as What shortens backlight module in the width of non-display area and does not influence the normal display of backlight module and display panel, becomes people Focus of attention problem.

The content of the invention

On the one hand, the embodiment of the present application provides a kind of backlight module, and backlight module includes:Light guide plate, including incidence surface And light-emitting surface;Light source, is arranged on incidence surface side;Even optical element, including be successively set on light-emitting surface diffusion barrier, first increase Light film and the second bright enhancement film, even optical element are located in non-display area close to one end of incidence surface;Light shield layer, is arranged on non-display Qu Zhong, and be arranged between light guide plate and diffusion barrier, and be arranged between diffusion barrier and the first bright enhancement film.

On the other hand, the embodiment of the present application additionally provides a kind of electronic device, and electronic device includes previously described backlight Module.

The embodiment of the present application is by non-display area, and between light guide plate and diffusion barrier, and in diffusion barrier and Light shield layer is set between one bright enhancement film, can stop that light is leaked to outside from non-display area, therefore backlight mould can reduced In the case of the width for the non-display area that group takes, backlight module is avoided the phenomenon of light leak occur.

Brief description of the drawings

Fig. 1 is a kind of structure diagram for backlight module that the application first embodiment provides;

Fig. 2 is the structure diagram of the even optical element of the backlight module shown in Fig. 1;

Fig. 3 is the backlight module light shield layer shading principle schematic that the application first embodiment provides;

Fig. 4 is a kind of schematic cross-sectional view of backlight module of the application second embodiment;

Fig. 5 is another schematic cross-sectional view of the backlight module of the application second embodiment;

Fig. 6 is the diffusion barrier of the application second embodiment and the structure diagram of the second bright enhancement film;

Fig. 7 is the schematic cross-sectional view of the backlight module of the application 3rd embodiment;

Fig. 8 is the structure diagram of the first bright enhancement film of the application 3rd embodiment;

Fig. 9 is the decomposition texture schematic diagram of the embodiment of the present application electronic device.

Embodiment

Below in conjunction with the attached drawing in the embodiment of the present application, the technical solution in the embodiment of the present application is carried out clear, complete Site preparation describes.It is understood that specific embodiment described herein is only used for explaining the application, rather than the limit to the application It is fixed.It also should be noted that for the ease of description, illustrate only in attached drawing and the relevant part of the application and not all knot Structure.Based on the embodiment in the application, what those of ordinary skill in the art were obtained without creative efforts Every other embodiment, shall fall in the protection scope of this application.

Term " first ", " second " in the application etc. are to be used to distinguish different objects, rather than specific suitable for describing Sequence.In addition, term " comprising " and " having " and their any deformations, it is intended that cover non-exclusive include.Such as comprising The step of process of series of steps or unit, method, system, product or equipment are not limited to list or unit, and It is alternatively to further include the step of not listing or unit, or alternatively further includes for these processes, method, product or equipment Intrinsic other steps or unit.

Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and Implicitly understand, embodiment described herein can be combined with other embodiments.

It should be noted that pursue narrow frame in portable electron devices such as such as smart mobile phones or shield instantly comprehensively, lead to It can often do the best some non-optical elements, i.e., the luminous element with the transmission of light of essence participation is not omitted, such as will only be made Removed for the element of single shade function, it is possible thereby to the space of the element be saved, so as to further carry out narrow frame or complete The design of face.Such as in the backlight module of the portable electron devices such as smart mobile phone, will can be arranged on light guide plate, and Shading element positioned at the side of even optical element removes.But the element for removing shade function the problem of light leak will occur, most The usage experience of user is influenced eventually.The embodiment of the present application provides a kind of scheme of backlight module and electronic device to solve above-mentioned ask Topic, the following embodiments provided referring specifically to the application:

Referring to Fig. 1, Fig. 1 is the structure diagram of the backlight module of the application first embodiment.In the present embodiment, carry on the back Optical mode group includes back frame 11, reflector plate 12, light guide plate 13, even optical element 14, light source 15 and light shield layer 16.

The box like structure that back frame 11 is open for one side, back frame 11 include bottom wall 111 and side wall 112, bottom wall 111 and side wall 112 bending connections, bottom wall 111 surround accommodating cavity with side wall 112.The material of back frame 11 can be metal, for example, iron, aluminium etc., It can be plastic cement.

Reflector plate 12 is arranged on the bottom wall 111 of back frame 11, and inside accommodating cavity.Reflector plate 12 can be by incident light Reflected.

Light guide plate 13 is arranged on reflector plate 12, and inside accommodating cavity.Light guide plate 13 includes light inputting end portion 131 and leads Tabula rasa main part 132, light inputting end portion 131 are provided with incidence surface 133, and light guide plate main body portion 132 is provided with light-emitting surface 134.Enter light 131 thickness of end is more than the thickness of light guide plate main body 132, and the light inputting end portion 131 is from incidence surface 133 to away from incidence surface 133 Direction thickness be gradually reduced, 132 thickness of light guide plate main body portion is uniform, i.e., thickness is equal everywhere.

Light source 15 is arranged on 131 side of incidence surface, and is arranged on the region that reflector plate 12 is not covered by light guide plate 13.Light Source 15 can be LED light.

Even optical element 14 is arranged on the light-emitting surface 134 of light guide plate 13, and even optical element 14 is close to one end of incidence surface 132 position In non-display area 140.

The light that light source 15 is sent is incided by the incidence surface 133 of light guide plate 13 in the light inputting end portion 131 of light guide plate 13, is entered Light end 131 is imported light in light guide plate main body portion 132 using its wedge structure, and light guide plate main body portion 132 guides light time Even optical element 14 is transferred to behind the whole light guide plate main body portion 132 of cloth, incident light is diffused by even optical element 14, optically focused increases Output after the processing such as bright as backlight module.Wherein, the light partly leaked out from the side of the remote light-emitting surface 134 of light guide plate 13 Line will be reflected back in light guide plate 13 by reflector plate 12.

It is to be understood that the light from backlight module output will in the display area be shown and form required image.At present In order to pursue high screen accounting, i.e., the design that widescreen is even shielded comprehensively, it will the design width to non-display area proposes extremely overcritical Limitation, it by some is not sending and transmitting and play the element of substantive significance to light that the design of narrow frame, which is typically, Remove, such as some only play the element of interception.This just easilys lead to the phenomenon that non-display area produces light leak.In this regard, this There is provided light shield layer to avoid the problem that light leak in non-display area in embodiment.

Specifically, even optical element 14 includes diffusion barrier 141, the first bright enhancement film 142 being successively set on light-emitting surface 134 And second bright enhancement film 143.First bright enhancement film 142, the second bright enhancement film 143 are integrated film layer 144, integral film layer 144 and diffusion Film 141 is relatively independent film layer.

That is, the integral film layer 144 that the first bright enhancement film 142 and the second bright enhancement film 143 are integrally formed, integral film layer 144 after 141 complete independently of diffusion barrier with being installed together.Diffusion barrier 141, integral film layer 144 shape can be identical, can the side of being Shape structure, as shown in Figure 2.Wherein, Fig. 1 is for the section view of the backlight module along Fig. 2 during the A-A positions cutting of even optical element Figure, light source 15 is passed through in its A-A position.It can be appreciated that in the present embodiment, as long as diffusion barrier 141, integral film layer 144 are by light Profile is consistent everywhere in source 15.

First bright enhancement film 142 can be described as lower bright enhancement film, and the second bright enhancement film 143 can be described as bright enhancement film.

Light shield layer 16 is arranged between light guide plate 13 and diffusion barrier 141, and is arranged on 141 and first bright enhancement film of diffusion barrier Between 142.More specifically, light shield layer 16 is arranged between diffusion barrier 141 and light guide plate main body portion 132, and is arranged on diffusion Between film 141 and integral film layer 144.

Outside is leaked in non-display area 140 it is possible thereby to stop from the light that light source 15 is sent, therefore can subtracted In the case of the width for the non-display area that small backlight module takes, backlight module is avoided light leak occur.

Light shield layer 16 is the black ink layer formed by silk-screen printing technique.Positioned at light guide plate 13 and diffusion barrier 141 Between light shield layer 16, can be formed on the surface of close light guide plate 13 of diffusion barrier 141, light guide plate 13 can also be formed in Close diffusion barrier 141 surface on.In the light shield layer 16 between diffusion barrier 141 and integral film layer 144, can be formed in On the surface of the close integral film layer 144 of diffusion barrier 141, the table of the close diffusion barrier 141 of integral film layer 144 can also be formed in On face.In other embodiments, light shield layer 16 can be to be formed by way of spraying.It is to be understood that light shield layer 16 can also lead to Cross other techniques to be formed, the embodiment of the present application does not limit this.

Further, light shield layer 16 may be configured as the black ink layer with alite paste.Positioned at light guide plate 13 and diffusion Diffusion barrier 141 is carried out stickup fixation by the light shield layer 16 between film 141, its one side, and light guide plate 13 paste solid by another side It is fixed, thus further diffusion barrier 141 can be fixed on light guide plate 13.Between diffusion barrier 141 and integral film layer 144 Diffusion barrier 141 is carried out stickup fixation by light shield layer 16, its one side, and integral film layer 144 is carried out stickup fixation, thus may be used by another side Further integral film layer 144 is fixed on diffusion barrier 141.

Backlight module further includes FPC (Flexible Printed Circuit, flexible PCB) circuit board 17 and FPC and consolidates Determine adhesive tape 18.FPC circuit boards 17 are arranged on light source 15 and are electrically connected with light source 15, the control signal transmission that outside is provided To light source 15.Further, FPC circuit boards 17 are arranged at intervals with even optical element 14, have a gap a between it.Mono- sides of gap a Face is used to match rigging error, on the other hand, backlight module is remained to normal use under a degree of cold and hot deformation.

FPC fixation adhesive tapes 18 are arranged between FPC circuit boards 17 and light guide plate 13, and FPC circuit boards 17 are fixed on and are led On tabula rasa 13.Specifically, FPC fixation adhesive tapes 18 are the two-sided adhesive tape with bonding agent, surface thereof is pasted with FPC circuit boards 17 Fixed, another surface is pasted with light guide plate 13 to be fixed.In the present embodiment, FPC fixation adhesive tapes 18 can be also spaced with even optical element 14 Set, form the part of gap a.

Further, backlight module further includes shading rubber belt 19, is arranged on FPC circuit boards 17, and is arranged on integral film Layer 144 on the position of non-display area 140.

Shading rubber belt 19 can include the first light shielding part 191 and the second light shielding part 192.First light shielding part 191 is covered in FPC On circuit board 17, the second light shielding part 192 is covered in integral film layer 144.More specifically it is arranged in integral film layer 144.First The thickness of light shielding part 191 can be more than the thickness of the second light shielding part 192.Second light shielding part 192 is by integral film layer 144 positioned at non- The position of viewing area 140 carries out shading, and applies an appropriate dynamics to integral film layer 144 so that diffusion barrier 141, integral film Layer 144 can be fixed on the light-emitting surface 134 of light guide plate 13.

Further, shading rubber belt 191 is at least set on the side close to the second bright enhancement film 143 of the second light shielding part 192 Alite paste is equipped with, the film layer that is further fixed as one by way of stickup 144.

Further, backlight module further includes center 21 and outline border 22.Outline border 22 is in shading rubber belt 19 and FPC circuit boards 17 Shading rubber belt 19 and FPC circuit boards 17 are fixed in side (left side shown in figure) away from one film layer 144.

Center 21 is located in the accommodating cavity of back frame 11, it is arranged on side of the light source 15 away from incidence surface 133, is used to support FPC circuit boards 17 and shading rubber belt 19.Outline border 22 is located at outside the accommodating cavity of back frame 11.Center 21 and outline border 22 can use metal Material, for example, iron, aluminium etc., or plastic cement.Center 21 can be integrally formed with outline border 22.

Referring to Fig. 3, Fig. 3 is the application first embodiment backlight module light shield layer shading principle schematic.

As shown in figure 3, light S1 is after light source 15 is sent originally, is directly projected by gap a and cause non-display area The light of 140 light leaks, the present embodiment can be blocked by light shield layer 16 goes out backlight module without direct projection, direct projection can be avoided to enter human eye. The setting of light shield layer 16 is in the direction of the width without single width spaces are taken, it is thereby possible to reduce backlight module is non-display The thickness in region.Wherein, non-display area refers to the region that shading rubber belt 19 covers, and viewing area is 19 unlapped area of shading rubber belt Domain.

In the present embodiment, the first bright enhancement film 142 and the second bright enhancement film 143 are integrated film layer 144, integral film layer 144 with Diffusion barrier 141 is relatively independent film layer, is the structure of two layers of composite membrane.In other embodiments, diffusion barrier 141, One bright enhancement film 142 and the second bright enhancement film 143 may be arranged as the structure of other composite membranes, such as 142 He of the first bright enhancement film Second bright enhancement film 143 is integrated film layer.Or diffusion barrier 141, the first bright enhancement film 142 and the second bright enhancement film 143 are relatively Independent film layer.

In addition, light shield layer 16 can also be arranged on other positions, such as can be arranged on following any one or more Position:Between the side of the close FPC circuit boards 17 of even optical element 14, integral film layer 144 and shading rubber belt 19.

Refer to Fig. 4-Fig. 6, Fig. 4 is the application second embodiment backlight module along the diffusion barrier shown in Fig. 6 and integral film The schematic cross-sectional view of the C-C directions sectility of layer, Fig. 5 are the application second embodiment backlight modules along the diffusion shown in Fig. 6 The schematic cross-sectional view of film and the B-B directions sectility of integral film layer.Fig. 6 is the diffusion barrier and one of the application second embodiment The structure diagram of film layer.

First as shown in figure 4, in the present embodiment, backlight module still includes back frame 41, reflector plate 42, light guide plate 43, even Optical element 44, light source 45, light shield layer 46, FPC circuit boards 47, FPC fixation adhesive tapes 48, shading rubber belt 49, center 51 and outline border 52. Wherein, back frame 41, reflector plate 42, light guide plate 43, light source 45, light shield layer 46, FPC circuit boards 47, shading rubber belt 49,51 and of center The structure of outline border 52 respectively with previously described back frame 11, reflector plate 12, light guide plate 13, light source 15, light shield layer 16, FPC circuits Plate 17, shading rubber belt 19, center 21 and outline border 22 are identical, and details are not described herein.

The FPC fixation adhesive tapes 48 of the present embodiment further prolong from the direction of FPC circuit boards 47 to the direction of even optical element 44 Stretch.Thus, there are gap b only between FPC circuit boards 47 and even optical element 44 for the present embodiment.

FPC fixation adhesive tapes 48 are led except that in upper and lower surface alite paste can be set to be fixed to FPC circuit boards 47 Outside tabula rasa 43, can also further it be set using black light screening material or in upper surface or lower surface or upper and lower surface black Color light screening material plays the role of shading.

Specifically, FPC fixation adhesive tapes 48 can use black belt.FPC fixation adhesive tapes 48 can also on it surface or under Black ink layer is set to play the role of shading on surface or in upper and lower surface.The setting of black ink layer can with it is preceding Identical described in text, details are not described herein.

The even optical element 44 of the present embodiment includes the diffusion barrier 441 being successively set on the light-emitting surface of light guide plate 43 and one Film layer 444.Integral film layer 444 synthesizes for the one of two bright enhancement films, specifically as it was noted above, details are not described herein.

Light shield layer 46 is arranged between diffusion barrier 441 and light guide plate 43 and is arranged on diffusion barrier 441 and integral film layer 444 Between.

Also referring to Fig. 6.Diffusion barrier 441 includes diffusion 4411 and self-diffusion main body 4411 to FPC fixing glues Diffusion extension 4412 with the extension of 48 directions.The side of diffusion 4411 connects with FPC fixation adhesive tapes 48, as shown in Figure 5. Diffusion extension 4412 is arranged on FPC fixation adhesive tapes 48, as shown in Figure 4.

It is two to spread extension 4412, respectively positioned at the both sides of diffusion barrier 441.It is to be understood that in other embodiments, expand The quantity for dissipating extension 4412 can also be other, such as one or three etc..

Light shield layer 46 is arranged between diffusion 4411 and light guide plate 43, as shown in Figure 4 and shown in Fig. 5.It is to be understood that The both sides of diffusion barrier 441, that is, spread the position of extension 4412, and light shield layer 46 may further be provided in diffusion extension 4412 Between FPC fixation adhesive tapes 48, as shown in Figure 4.

Integral film layer 444 include be arranged on diffusion 4411 add lustre to main body 4441 and add lustre to certainly main body 4441 to The extension 4442 that adds lustre to of 48 direction of FPC fixation adhesive tapes extension, the extension 4442 that adds lustre to are arranged on diffusion extension 4412.

Similarly, the extension 4442 that adds lustre to may also comprise two, respectively positioned at the both sides of integral film layer 444.In the present embodiment, Add lustre to extension 4442 the big I of location and shape with diffusion extension 4412 it is identical.It is to be understood that in other embodiments, The quantity of extension 4442 of adding lustre to can also be other, such as one or three etc..Add lustre to extension 4442 shape size also Can be other, details are not described herein.

Light shield layer 46 is further disposed at diffusion 4411 between main body 4441 of adding lustre to, as shown in Figure 4 and Fig. 5 institutes Show.It is to be understood that in the both sides of integral film layer 444, that is, the position for the extension 4442 that adds lustre to, light shield layer 46 may further be provided Add lustre between extension 4442 and diffusion extension 4412, as shown in Figure 4.

Described in brought forward, the FPC fixation adhesive tapes 48 of the present embodiment can stop from the light direct beam that light source 45 was sent to gap b In, leaked out so as to prevent from gap b.In addition, shading rubber belt 46 can prevent the light of the other positions of non-display area 440 Leakage.

It is to be understood that the present embodiment one film layer 444 can also be the structure of non-composite film, it is the first independent bright enhancement film It is specific as it was noted above, herein not with the second bright enhancement film, or diffusion barrier 441 and integral film layer 444 or compound structure Repeat again.

Similarly, the light shield layer 46 of the present embodiment can also be arranged on other positions, specific as it was noted above, no longer superfluous herein State.

Refer to Fig. 7 and Fig. 8, Fig. 7 is the backlight module of the application 3rd embodiment along the integral film layer shown in Fig. 8 The schematic cross-sectional view of D-D directions sectility.

First as shown in fig. 7, in the present embodiment, backlight module still include back frame 71, reflector plate 72, light guide plate 73, Optical element 74, light source 75, light shield layer 76, FPC circuit boards 77, FPC fixation adhesive tapes 78, shading rubber belt 79, center 81 and outline border 82. Wherein, back frame 71, reflector plate 72, light guide plate 73, light source 75, light shield layer 76, FPC circuit boards 77, shading rubber belt 79,81 and of center The structure of outline border 82 respectively with previously described back frame 11, reflector plate 12, light guide plate 13, light source 15, light shield layer 16, FPC circuits Plate 17, shading rubber belt 19, center 21 and outline border 22 are identical, and details are not described herein.

The FPC fixation adhesive tapes 78 of the present embodiment further prolong from the direction of FPC circuit boards 77 to the direction of even optical element 74 Stretch, and connect with the side of diffusion barrier 741.Thus, between the present embodiment only exists between FPC circuit boards 77 and even optical element 74 Gap c.

FPC fixation adhesive tapes 78 are led except that in upper and lower surface alite paste can be set to be fixed to FPC circuit boards 77 Outside tabula rasa 73, can also further it be set using black light screening material or in upper surface or lower surface or upper and lower surface black Color light screening material plays the role of shading.

Specifically, FPC fixation adhesive tapes 78 can use black belt.FPC fixation adhesive tapes 78 can also on it surface or under Black ink layer is set to play the role of shading on surface or in upper and lower surface.The setting of black ink layer can with it is preceding Identical described in text, details are not described herein.

The even optical element 74 of the present embodiment includes the diffusion barrier 741 being successively set on the light-emitting surface of light guide plate 73 and one Film layer 744.Integral film layer 744 synthesizes for the one of two bright enhancement films, specifically as it was noted above, details are not described herein.

Light shield layer 76 is arranged between diffusion barrier 741 and light guide plate 73 and is arranged on diffusion barrier 741 and integral film layer 744 Between.

Also referring to Fig. 8.Integral film layer 744 includes being arranged on add lustre to main body 7441 and increasing certainly on diffusion barrier 741 The extension 7442 that adds lustre to that light main body 7441 extends to 48 direction of FPC fixation adhesive tapes, the extension 7442 that adds lustre to are arranged on FPC and fix On adhesive tape 48.Diffusion barrier 741, main body of adding lustre to 7422 shape size can be identical.

It is to be understood that Fig. 7 is diagrammatic cross-sections of the Fig. 8 along the direction sectility of the extension 7442 that adds lustre to of integral film layer 744, I.e. along the diagrammatic cross-section of the D-D directions sectility shown in Fig. 8.If the direction of the main body 7441 of adding lustre to along integral film layer 744 The cross-section structure of sectility is identical with Fig. 5's, and details are not described herein.

Light shield layer 76 is specifically provided between diffusion barrier 741 and light guide plate 73 and is arranged on diffusion barrier 741 with adding lustre to Between main body 7441.It is to be understood that in the both sides of integral film layer 744, that is, the position for the extension 4442 that adds lustre to, light shield layer 76 can also be into One step, which is arranged on, adds lustre between extension 7442 and FPC fixation adhesive tapes 78.

Described in brought forward, the FPC fixation adhesive tapes 78 of the present embodiment can stop from the light direct beam that light source 75 was sent to gap c In, leaked out so as to prevent from gap c.In addition, shading rubber belt 76 can prevent the light of the other positions of non-display area Leakage.

It is to be understood that the present embodiment one film layer 744 can also be the structure of non-composite film, it is the first independent bright enhancement film It is specific as it was noted above, herein not with the second bright enhancement film, or diffusion barrier 741 and integral film layer 744 or compound structure Repeat again.

Similarly, the light shield layer 76 of the present embodiment can also be arranged on other positions, specific as it was noted above, no longer superfluous herein State.

Referring to Fig. 9, Fig. 9 is the decomposition texture schematic diagram of the embodiment of the present application electronic device.In the present embodiment, electronics Device 90 can be smart mobile phone, and in other embodiments, electronic device can also be tablet computer, palm PC, intelligent hand Table etc..

In the present embodiment, electronic device 90 includes rear shell 91, center 92, backlight module 93, display module 94 and lid Plate 95.

Center 92 is fixedly connected with rear shell 91.

Display module 94 is laminated on backlight module 93, and display module 94 and backlight module 93 are both secured to center 92.

Backlight module 93 is used to provide backlight for display module 94.

Display module 94 can be liquid crystal display panel or other display panels.

Cover board 95 lid set with display module 94.Cover board 95 can be transparent glass cover plate, in non-display area, cover board 95 Can be opaque.For example, cover board 95 scribbles black out ink in non-display area.

It is to be understood that the other structures of electronic device can be provided between rear shell 91 and center 92, for example, circuit board Deng since the application is not related to the improvement to these components, not illustrating herein.

In other embodiments, electronic device 90 can also use other structures, the structure of above-mentioned electronic device 90 Illustrate and the protection domain of non-limiting the application.

The foregoing is merely presently filed embodiment, not thereby limits the scope of the claims of the application, every to utilize this The equivalent structure or equivalent flow shift that application specification and accompanying drawing content are made, it is relevant to be directly or indirectly used in other Technical field, is similarly included in the scope of patent protection of the application.

Claims (10)

1. a kind of backlight module, it is characterised in that the backlight module includes:
Light guide plate, including incidence surface and light-emitting surface;
Light source, is arranged on the incidence surface side;
Even optical element, including diffusion barrier, the first bright enhancement film and the second bright enhancement film being successively set on the light-emitting surface, it is described Even optical element is located in non-display area close to one end of the incidence surface;
Light shield layer, is arranged in the non-display area, and is arranged between the light guide plate and the diffusion barrier, and is arranged on Between the diffusion barrier and first bright enhancement film.
2. backlight module according to claim 1, it is characterised in that the light shield layer is to be formed by silk-screen printing technique Black ink layer.
3. backlight module according to claim 1, it is characterised in that first bright enhancement film and second bright enhancement film are Integral film layer, the one film layer and the diffusion barrier are relatively independent film layer.
4. backlight module according to claim 3, it is characterised in that the backlight module further includes FPC circuit boards and fixed with FPC Adhesive tape, the FPC circuit boards are arranged on the light source and are electrically connected with the light source, and the FPC fixation adhesive tapes are arranged on institute State between FPC circuit boards and light guide plate, the FPC circuit boards are fixed on the light guide plate.
5. backlight module according to claim 4, it is characterised in that the diffusion barrier includes being arranged on the light-emitting surface Diffusion and diffusion extension from the diffusion to the FPC fixation adhesive tapes direction that extend from, the diffusion prolong Extending portion is arranged on the FPC fixation adhesive tapes;
The one film layer includes being arranged on adding lustre on the diffusion and main body and adds lustre to main body to the FPC described in The extension that adds lustre to of fixation adhesive tape direction extension, the extension that adds lustre to are arranged on the diffusion extension.
6. backlight module according to claim 5, it is characterised in that the light shield layer is arranged on the diffusion and institute State between light guide plate and be arranged between the diffusion and the main body of adding lustre to.
7. backlight module according to claim 5, it is characterised in that the diffusion extension and the extension that adds lustre to are equal For two, two diffusion extensions are separately positioned on the both sides of the diffusion barrier, and the extension that adds lustre to described in two is set respectively Put in the both sides of the integral film layer.
8. backlight module according to claim 4, it is characterised in that the one film layer includes being arranged on the diffusion barrier On add lustre to and main body and add lustre to the extension that adds lustre to that main body extends to the FPC fixation adhesive tapes direction described in, it is described to add lustre to Extension is arranged on the FPC fixation adhesive tapes;
Wherein, the light shield layer is arranged between the diffusion barrier and the light guide plate and is arranged on add lustre to main body and the institute State between diffusion barrier.
9. backlight module according to claim 3, it is characterised in that the backlight module further includes shading rubber belt, described Shading rubber belt is arranged in the integral film layer, for fixing the integral film layer.
10. a kind of electronic device, it is characterised in that the electronic device includes the backlight described in claim 1-9 any one Module.
CN201810104823.7A 2018-01-31 2018-01-31 A kind of backlight module and electronic device CN108019668A (en)

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CN102105737A (en) * 2008-08-07 2011-06-22 欧姆龙株式会社 Area light source device
CN202884679U (en) * 2012-10-08 2013-04-17 京东方科技集团股份有限公司 Light-leaking-proof backlight body and liquid crystal display module thereof
CN103775913A (en) * 2012-10-18 2014-05-07 欧姆龙株式会社 Surface light source device, liquid crystal display device, and mobile device
CN105987327A (en) * 2015-07-21 2016-10-05 乐视致新电子科技(天津)有限公司 Side-into type backlight module and display device

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CN1702511A (en) * 2004-05-24 2005-11-30 精工爱普生株式会社 Electro-optical device and electronic apparatus
CN102105737A (en) * 2008-08-07 2011-06-22 欧姆龙株式会社 Area light source device
CN202884679U (en) * 2012-10-08 2013-04-17 京东方科技集团股份有限公司 Light-leaking-proof backlight body and liquid crystal display module thereof
CN103775913A (en) * 2012-10-18 2014-05-07 欧姆龙株式会社 Surface light source device, liquid crystal display device, and mobile device
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WO2019149083A1 (en) * 2018-01-31 2019-08-08 Oppo广东移动通信有限公司 Backlight module, display assembly and electronic device

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