CN108317436A - A kind of backlight module and electronic device - Google Patents
A kind of backlight module and electronic device Download PDFInfo
- Publication number
- CN108317436A CN108317436A CN201810104765.8A CN201810104765A CN108317436A CN 108317436 A CN108317436 A CN 108317436A CN 201810104765 A CN201810104765 A CN 201810104765A CN 108317436 A CN108317436 A CN 108317436A
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- China
- Prior art keywords
- light
- backlight module
- layer
- enhancement film
- film
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/08—Refractors for light sources producing an asymmetric light distribution
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices 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
- G02F1/01—Devices 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
- G02F1/13—Devices 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
This application discloses a kind of backlight module and electronic devices.Backlight module includes：Light guide plate, including incidence surface and light-emitting surface；Multiple light sources, setting is in incidence surface side, the setting of multiple light sources interval；Brightness enhancement layer is arranged between two adjacent light sources, for increasing the brightness between two adjacent light sources, to prevent from dark space occur between light source.Therefore, so that backlight module light transmission is uniform, light and shade parallax is prevented.
Description
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
Currently, with the development of science and technology, the electronic devices such as smart mobile phone are increasingly at necessity for people's lives.
Backlight module is the important component of electronic device, and the backlight module of the portable electronic devices such as smart mobile phone is logical at present
Frequently with side entrance back module, i.e., the light that light source is sent out 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.The light that light source is sent out is scattering state, but angle is bigger, and the intensity of light is just
It is smaller, therefore position between the two light sources is easy to occur dark space because of insufficient light, influences the display of display panel.
Invention content
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；Multiple light sources, setting is in incidence surface side, the setting of multiple light sources interval；Brightness enhancement layer is arranged in two adjacent light
Between source, for increasing the brightness between two adjacent light sources, to prevent from dark space occur between light source.
On the other hand, the embodiment of the present application also provides a kind of electronic device, electronic device includes previously described backlight
Module.
The embodiment of the present application can increase adjacent two by the way that brightness enhancement layer, brightness enhancement layer are arranged between two adjacent light sources
Brightness between light source, it is therefore prevented that occur the phenomenon that dark space between light source because of insufficient light, so that backlight module light transmission
Uniformly, light and shade parallax is prevented.
Description of the drawings
Fig. 1 is the main structure diagram of the backlight module of the application first embodiment；
Fig. 2 is cross-sectional view of the backlight module shown in FIG. 1 along the cutting of the directions A-A；
Fig. 3 is cross-sectional view of the backlight module shown in FIG. 1 along the cutting of the directions B-B；
Fig. 4 is the structural schematic diagram of the even optical element of backlight module shown in FIG. 1；
Fig. 5 is the application first embodiment backlight module light shield layer shading principle schematic；
Fig. 6 is the backlight module of the application second embodiment along the directions C-C of diffusion barrier shown in Fig. 8 and the second bright enhancement film
The schematic cross-sectional view of sectility；
Fig. 7 is the backlight module of the application second embodiment along the directions D-D of diffusion barrier shown in Fig. 8 and the second bright enhancement film
The schematic cross-sectional view of sectility；
Fig. 8 is the structural schematic diagram of the diffusion barrier and the second bright enhancement film of the application second embodiment；
Fig. 9 is the directions the E-E sectility along the first bright enhancement film shown in Fig. 10 of the backlight module of the application 3rd embodiment
Schematic cross-sectional view；
Figure 10 is the structural schematic diagram of the first bright enhancement film of the application 3rd embodiment；
Figure 11 is the decomposition texture schematic diagram of the embodiment of the present application electronic device.
Specific implementation mode
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries 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 illustrating only for ease of description, in attached drawing and the relevant part of the application and not all knot
Structure.Based on the embodiment in the application, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall in the protection scope of this application.
Term " first ", " second " in the application etc. be for distinguishing different objects, rather than it is specific suitable for describing
Sequence.In addition, term " comprising " and " having " and their any deformations, it is intended that cover and 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 further includes the steps that optionally not listing or unit to be, or further includes optionally 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.
- Fig. 3 is please referred to Fig.1, Fig. 1 is the structural schematic diagram of the backlight module of the application first embodiment.Fig. 2 is Fig. 1 institutes
The backlight module shown along the cutting of the directions A-A cross-sectional view；Fig. 3 is backlight module shown in FIG. 1 along the directions B-B
The cross-sectional view of cutting.In the present embodiment, backlight module includes back frame 11, reflector plate 12, light guide plate 13, even light member
Part 14, light source 15 and brightness enhancement layer 20.
Back frame 11 is the box like structure of one side opening, and back frame 11 includes 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 set on the bottom wall 111 of back frame 11, and inside accommodating cavity.Reflector plate 12 can be by incident light
It is reflected.
Light guide plate 13 is set 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 far 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 multiple, and setting is in 131 side of incidence surface, and the interval of multiple light sources 15 is arranged.Light source 15 is simultaneously located at anti-
It penetrates on the region that piece 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 out is incident on 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 entire light guide plate main body portion of cloth 132, incident light is diffused by even optical element 14, optically focused increases
Output after bright equal processing as backlight module.Wherein, the light partly leaked out from the side of the separate light-emitting surface 134 of light guide plate 13
Line will be reflected back by reflector plate 12 in light guide plate 13.
It should be understood that the light exported from backlight module will be shown and form required image in the display area.At present
In order to pursue high screen accounting, i.e., the design that widescreen is even shielded comprehensively, it will proposed to the design width of non-display area extremely overcritical
Limitation, the width of non-display area 140 can limit the size of element therein.Such as light source 15, it would generally be arranged
It obtains minimum and is arranged in non-display area 140, and the side of the incidence surface 133 positioned at light guide plate 13.Thus light source 15 to its two
The light that side distributes will be extremely limited, this results in being easy to show because of insufficient light between two adjacent light sources 15
The dark area effect shown, as shown in Figure 1.
In this regard, brightness enhancement layer 20 is arranged to avoid asking for light and shade parallax between two adjacent light sources 15 in the present embodiment
Topic.
Specifically, as depicted in figs. 1 and 2, it is adjacent to enhance that brightness enhancement layer 20 is arranged between two adjacent light sources 15
Two light sources 15 between brightness.
Brightness enhancement layer 20 can be phosphor powder layer.Fluorescent powder shines under the stimulation of light, thus to two adjacent light sources 15
Between light supplemented so that backlight module light transmission is uniform, the problem of preventing light and shade parallax.
It should be understood that brightness enhancement layer 20 can also use other materials.
Brightness enhancement layer 20 is uniformly arranged along the orientation of light source 15.That is, along the orientation of light source 15, increase
The thickness of bright layers 20 is equal everywhere.
The thickness of brightness enhancement layer 20 may also be configured to become larger along the direction far from light source 15.
Brightness enhancement layer 20 can be formed by the technique of silk-screen, can also be formed by the technique of spraying, can also be passed through light shield
The technique of etching is formed.The application is not restricted the generation type of brightness enhancement layer 20.
It can solve the problem of dark space occur between light source 15 when narrow frame or comprehensively screen design by the way that brightness enhancement layer 20 is arranged.But
Be due to the design of narrow frame would generally not be by some to light send out and transmit play substantive significance element removal,
Such as some only play the element of interception.This just easilys lead to the phenomenon that non-display area generates light leakage.In this regard, this implementation
In example light leakage is avoided the problem that provided with light shield layer in non-display area.
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 and diffusion barrier 141 are mutually independent film layer.Also
It is to say, the first bright enhancement film 142 and the second bright enhancement film 143 are independently installed together after the completion with 141 three of diffusion barrier.Diffusion
Film 141, the first bright enhancement film 142,143 three of the second bright enhancement film shape can be identical, can be square structure, as shown in Figure 4.
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.
Backlight module further includes light shield layer 16.Light shield layer 16 is arranged in non-display area 140.Light shield layer 16 is arranged in leaded light
Between plate 13 and diffusion barrier 141.More specifically, light shield layer 16 is arranged between diffusion barrier 141 and light guide plate main body portion 132.Its
In, the thickness of light shield layer 16 is uniformly arranged.
It is leaked to outside in non-display area 140 it is possible thereby to stop from the light that light source 15 is sent out, therefore can subtract
In the case of the width for the non-display area that small backlight module occupies, backlight module is avoided light leakage occur.
Light shield layer 16 is the black ink layer formed by silk-screen printing technique.The close of diffusion barrier 141 can be formed in
On the surface of light guide plate 13, it can also be formed on the surface of close diffusion barrier 141 of light guide plate 13.In other embodiments,
Light shield layer 16 can be to be formed by way of spraying.It should be understood that light shield layer 16 can also be formed by other techniques, the application
Embodiment does not limit this.
Brightness enhancement layer 20 is arranged on light shield layer 16.Specifically, brightness enhancement layer 20 may be provided at light shield layer 16 and diffusion barrier 141
Between.It should be understood that in other embodiments, brightness enhancement layer 20 can also be arranged between light shield layer 16 and light guide plate 13.
Backlight module further includes FPC (Flexible Printed Circuit, flexible PCB) circuit boards 17 and FPC solid
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 and even optical element 14 interval are arranged, between there is a gap a.Mono- sides of gap a
On the other hand face, makes backlight module remain to normal use for matching rigging error 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
Setting forms the part of gap a.
Further, backlight module further includes shading rubber belt 19, is arranged on FPC circuit boards 17, and is arranged and increases second
Light film 143 on the position of non-display area 140.
Shading rubber belt 19 may 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 on the second bright enhancement film 143.More specifically it is provided on the second bright enhancement film 143.
The thickness of first light shielding part 191 can be more than the thickness of the second light shielding part 192.Second light shielding part 192 is by the second bright enhancement film 143
Shading is carried out positioned at the position of non-display area 140, and a dynamics appropriate is applied to the second bright enhancement film 143 so that diffusion barrier
141, the first bright enhancement film 142 and the second bright enhancement film 143 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
It is equipped with alite paste, the second bright enhancement film 143 is further fixed by way of stickup.
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) far from the second bright enhancement film 143.Center 21 can
It is integrally formed with outline border 22.
Center 21 is located in the accommodating cavity of back frame 11, is arranged in side of the light source 15 far 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.Metal can be used in center 21 and outline border 22
Material, for example, iron, aluminium etc., or plastic cement.
Referring to Fig. 5, Fig. 5 is the application first embodiment backlight module light shield layer shading principle schematic.
As shown in figure 5, light S1 is after light source 15 is sent out originally, is directly projected by gap a and cause non-display area
The light of 140 light leakages, the present embodiment can be blocked by light shield layer 16 goes out backlight module without direct projection, and avoidable direct projection enters human eye.
The setting of light shield layer 16 is in the direction of the width without occupying individual width spaces, 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.
Further, brightness enhancement layer 20 is provided between two adjacent light sources 15 due to the application, it can be to light source 15
Between position carry out blast, thus can avoid dark space the phenomenon that, prevent light and shade parallax.
In the present embodiment, diffusion barrier 141, the first bright enhancement film 142 and the second bright enhancement film 143 are mutually independent film layer.
In other embodiments, the first bright enhancement film 142 and the second bright enhancement film 143 can also be composite film, i.e. 142 He of the first bright enhancement film
Second bright enhancement film 143 is integrated film layer, and a film layer and diffusion barrier 141 are relatively independent film layer, as two layers composite membrane
Structure.In other embodiments, diffusion barrier 141, the first bright enhancement film 142 and the second bright enhancement film 143 may be arranged as other
The structure of composite membrane, such as the first bright enhancement film 142 and the second bright enhancement film 143 are integrated film layer.
In addition, light shield layer 16 can also be arranged in other positions, such as can be arranged below any one or more
Position：Between diffusion barrier 141 and the first bright enhancement film 142, between the first bright enhancement film 142 and the second bright enhancement film 143, the second bright enhancement film
Between the 143 and shading rubber belt 19 and side of the close FPC circuit boards 17 of even optical element 14.
Fig. 6-Fig. 8 is please referred to, Fig. 6 is that the application second embodiment backlight module increases along diffusion barrier shown in Fig. 8 and second
The schematic cross-sectional view of the directions the C-C sectility of light film, wherein the directions C-C correspond to the directions A-A of backlight module shown in FIG. 1.
Fig. 7 is section view of the application second embodiment backlight module along diffusion barrier shown in Fig. 8 and the directions the D-D sectility of the second bright enhancement film
Structural schematic diagram.Wherein, the directions D-D correspond to the directions B-B of backlight module shown in FIG. 1.Fig. 8 is the application second embodiment
The structural schematic diagram of diffusion barrier and the second bright enhancement film.
First as shown in fig. 6, in the present embodiment, backlight module includes still 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, brightness enhancement layer 50, center 51
With 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, the structure of brightness enhancement layer 50, center 51 and 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 circuit boards 17, shading rubber belt 19, brightness enhancement layer 20, 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
It stretches.There are gap b only between FPC circuit boards 47 and even optical element 44 for the present embodiment as a result,.
FPC fixation adhesive tapes 48 are led in addition to that can be fixed to FPC circuit boards 47 in upper and lower surface setting alite paste
Outside tabula rasa 43, black light screening material or black in upper surface or lower surface or upper and lower surface setting can also be further used
Color light screening material plays the role of shading.
Specifically, black belt can be used in FPC fixation adhesive tapes 48.FPC fixation adhesive tapes 48 can also on it surface or under
Black ink layer is set on surface or in upper and lower surface to play the role of shading.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 and first being successively set on the light-emitting surface of light guide plate 43
Bright enhancement film 442 and the second bright enhancement film 443.Diffusion barrier 441 and the first bright enhancement film 442 and the second bright enhancement film 443 are independent mutually
Film layer, concrete structure is 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.
Also referring to Fig. 8.Diffusion barrier 441 includes diffusion 4411 and self-diffusion main body 4411 to FPC fixing glues
The diffusion extension 4412 extended with 48 directions.The side of diffusion 4411 connects with FPC fixation adhesive tapes 48, as shown in Figure 7.
It spreads extension 4412 to be arranged on FPC fixation adhesive tapes 48, as shown in Figure 6.
It is two to spread extension 4412, is located at the both sides of diffusion barrier 441.It should be understood that in other embodiments, expanding
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 6 and shown in Fig. 7.It should 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 6.
Brightness enhancement layer 50 is between two light sources 45, structure similar to Figure 1.And brightness enhancement layer 50 is arranged in light shield layer 46
On, as shown in Figure 6.More specifically, lustre adding layer 50 may be provided at the light shield layer between diffusion 4411 and light guide plate 43
On 46.
Second bright enhancement film 443 includes add lustre to main body 4431 and the main body of adding lustre to certainly being arranged on the first bright enhancement film 442
4431 extensions 4432 that add lustre to extended to 48 direction of FPC fixation adhesive tapes, the extension 4432 that adds lustre to setting is in diffusion extension
On 4412.
Similarly, the extension 4432 that adds lustre to may also comprise two, be located at the both sides of the second bright enhancement film 443.The present embodiment
In, the location and shape size for the extension 4432 that adds lustre to can be identical with diffusion extension 4412.It should be understood that in other embodiment
In, the quantity of the extension 4432 that adds lustre to can also be other, such as one or three etc..Add lustre to the shape size of extension 4432
Can also be other, details are not described herein.
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 out to gap b
In, it is leaked out 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.
Further, brightness enhancement layer 50 is provided between two adjacent light sources 45 due to the application, it can be to light source 45
Between position carry out blast, thus can avoid dark space the phenomenon that, prevent light and shade parallax.
It should be understood that the present embodiment diffusion barrier 441, the first bright enhancement film 442 and the second bright enhancement film 443 or composite membrane
Structure, specifically, the first bright enhancement film 442 and the second bright enhancement film 443 are integrated film layer, integrated film layer is phase with diffusion barrier 441
Mutual independent film layer or diffusion barrier 441, the first bright enhancement film 442 and the second bright enhancement film 443 are integrated film layer, specific as before
Described in text, details are not described herein.
Similarly, the light shield layer 46 of the present embodiment can also be arranged in other positions, specific as it was noted above, no longer superfluous herein
It states.
Fig. 9 and Figure 10 are please referred to, Fig. 9 is adding lustre to along shown in Fig. 10 first for the backlight module of the application 3rd embodiment
The schematic cross-sectional view of the directions the E-E sectility of film.Wherein, the directions E-E correspond to the directions A-A of backlight module shown in FIG. 1.
First as shown in figure 9, in the present embodiment, backlight module still include back frame 71, reflector plate 72, light guide plate 73,
Optical element 74, light source (not shown), light shield layer 76, FPC circuit boards 77, FPC fixation adhesive tapes 78, shading rubber belt 79, brightness enhancement layer
80, center 81 and outline border 82.Wherein, back frame 71, reflector plate 72, light guide plate 73, light source, light shield layer 76, FPC circuit boards 77, screening
Optical cement band 79, brightness enhancement layer 80, the structure of center 81 and 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 circuit boards 17, shading rubber belt 19, brightness enhancement layer 20, center 21 and outline border 22 are identical, herein not
It repeats again.
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
It stretches, and connects with the side of diffusion barrier 741.Between the present embodiment only exists between FPC circuit boards 77 and even optical element 74 as a result,
Gap c.
FPC fixation adhesive tapes 78 are led in addition to that can be fixed to FPC circuit boards 77 in upper and lower surface setting alite paste
Outside tabula rasa 73, black light screening material or black in upper surface or lower surface or upper and lower surface setting can also be further used
Color light screening material plays the role of shading.
Specifically, black belt can be used in FPC fixation adhesive tapes 78.FPC fixation adhesive tapes 78 can also on it surface or under
Black ink layer is set on surface or in upper and lower surface to play the role of shading.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, first being successively set on the light-emitting surface of light guide plate 73
Bright enhancement film 742 and the second bright enhancement film 743.Diffusion barrier 741, the first bright enhancement film 742 and the second bright enhancement film 743 are mutual indepedent
Film layer, 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.Brightness enhancement layer 80 is located between two light sources, and is arranged
On light shield layer 76, similar structure as shown in Figure 1.
Also referring to Figure 10.First bright enhancement film 742 include be arranged on diffusion barrier 741 add lustre to main body 7421 and from
The extension 7422 that adds lustre to that main body of adding lustre to 7421 extends to 48 direction of FPC fixation adhesive tapes, the extension 7422 that adds lustre to setting are solid in FPC
Determine on adhesive tape 48.Diffusion barrier 741, main body of adding lustre to 7422 shape size can be identical.
Illustrate along the section of the direction sectility of the extension 7422 that adds lustre to of the first bright enhancement film 742 it should be understood that Fig. 9 is Figure 10
Figure, i.e., along the diagrammatic cross-section of the directions E-E shown in Fig. 10 sectility.If along the main body 7421 of adding lustre to of the first bright enhancement film 742
Direction and corresponding light source position sectility, cross-section structure is identical as Fig. 7's, and details are not described herein.
Light shield layer 76 is specifically provided between diffusion barrier 741 and light guide plate 73.It should be understood that in the first bright enhancement film 742
Both sides, that is, the position for the extension 7422 that adds lustre to, light shield layer 76 can also be provided at add lustre to extension 7422 and FPC fixation adhesive tapes 78 it
Between.
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 out to gap c
In, it is leaked out to prevent from gap c.In addition, shading rubber belt 76 can prevent the light of the other positions of non-display area
Leakage.
Further, brightness enhancement layer 80 is provided between two adjacent light sources due to the application, it can be between light source
Position carry out blast, thus can avoid dark space the phenomenon that, prevent light and shade parallax.
It should be understood that the present embodiment diffusion barrier 741, the first bright enhancement film 742 and the second bright enhancement film 743 or composite membrane
Structure, specifically, the first bright enhancement film 742 and the second bright enhancement film 743 are integrated film layer, integrated film layer is phase with diffusion barrier 741
Mutual independent film layer or diffusion barrier 741, the first bright enhancement film 742 and the second bright enhancement film 743 are integrated film layer.Specifically as before
Described in text, details are not described herein.
Similarly, the light shield layer 76 of the present embodiment can also be arranged in other positions, specific as it was noted above, no longer superfluous herein
It states.
Please refer to Fig.1 the decomposition texture schematic diagram that 1, Figure 11 is the embodiment of the present application electronic device.In the present embodiment, electric
Sub-device 90 can be smart mobile phone, and in other embodiments, electronic device may be tablet computer, palm PC, intelligence
Wrist-watch 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 in 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 is coated with black out ink in non-display area.
It should 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 embodiments, are not intended to limit the scope of the claims of the application, every to utilize this
Equivalent structure or equivalent flow shift made by application specification and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field includes similarly in the scope of patent protection of the application.
Claims (10)
1. a kind of backlight module, which is characterized in that the backlight module includes：
Light guide plate, including incidence surface and light-emitting surface；
Multiple light sources, setting is in the incidence surface side, multiple light source interval settings；
Brightness enhancement layer is arranged between two adjacent light sources, for increasing the brightness between two adjacent light sources,
To prevent from dark space occur between the light source.
2. backlight module according to claim 1, which is characterized in that the brightness enhancement layer is phosphor powder layer.
3. backlight module according to claim 1, the brightness enhancement layer is uniformly arranged along the orientation of the light source.
4. backlight module according to claim 1, which is characterized in that the brightness enhancement layer along the light source orientation
Setting, and the thickness of the brightness enhancement layer becomes larger along the direction far from the light source.
5. backlight module according to claim 1, which is characterized in that the backlight module further includes：
Even optical element, the even optical element are arranged on the light-emitting surface, and the even optical element is close to one end of the incidence surface
In non-display area；
Light shield layer is arranged in the non-display area, and the brightness enhancement layer is arranged on the light shield layer.
6. backlight module according to claim 5, which is characterized in that the thickness of the light shield layer is uniformly arranged.
7. backlight module according to claim 5, which is characterized in that the even optical element include be successively set on it is described go out
Diffusion barrier, the first bright enhancement film in smooth surface and the second bright enhancement film, diffusion barrier, first bright enhancement film and described second are added lustre to
Film is mutually independent film layer.
8. backlight module according to claim 5, which is characterized in that the even optical element include be successively set on it is described go out
Diffusion barrier, the first bright enhancement film in smooth surface and the second bright enhancement film, first bright enhancement film and second bright enhancement film are one
Body film layer, the one film layer are mutually independent film layer with the diffusion barrier.
9. according to claim 7 or 8 any one of them backlight modules, which is characterized in that the backlight module further includes shading
Adhesive tape, the shading rubber belt is arranged on second bright enhancement film, for fixing second bright enhancement film.
10. a kind of electronic device, which is characterized in that the electronic device includes backlight described in any one of claim 1-9
Module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810104765.8A CN108317436B (en) | 2018-01-31 | 2018-01-31 | Backlight module and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810104765.8A CN108317436B (en) | 2018-01-31 | 2018-01-31 | Backlight module and electronic device |
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| Publication Number | Publication Date |
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| CN108317436A true CN108317436A (en) | 2018-07-24 |
| CN108317436B CN108317436B (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810104765.8A Active CN108317436B (en) | 2018-01-31 | 2018-01-31 | Backlight module and electronic device |
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| Country | Link |
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| CN (1) | CN108317436B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN110632797A (en) * | 2019-10-29 | 2019-12-31 | 维沃移动通信有限公司 | Backlight and electronic equipment |
| CN111367009A (en) * | 2020-04-10 | 2020-07-03 | 博讯光电科技(合肥)有限公司 | Light guide plate with novel structure |
| CN112558355A (en) * | 2020-12-17 | 2021-03-26 | 业成科技（成都）有限公司 | Backlight module and display panel |
| TWI823439B (en) * | 2021-09-03 | 2023-11-21 | 群創光電股份有限公司 | Backlight module and electronic device |
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| 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 |
| US20150168634A1 (en) * | 2013-12-16 | 2015-06-18 | Qisda (Suzhou) Co., Ltd. | Display device and backlight module thereof |
| 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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| 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 |
| CN110632797A (en) * | 2019-10-29 | 2019-12-31 | 维沃移动通信有限公司 | Backlight and electronic equipment |
| CN111367009A (en) * | 2020-04-10 | 2020-07-03 | 博讯光电科技(合肥)有限公司 | Light guide plate with novel structure |
| CN112558355A (en) * | 2020-12-17 | 2021-03-26 | 业成科技（成都）有限公司 | Backlight module and display panel |
| TWI823439B (en) * | 2021-09-03 | 2023-11-21 | 群創光電股份有限公司 | Backlight module and electronic device |
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| Publication number | Publication date |
|---|---|
| CN108317436B (en) | 2021-02-09 |
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