CN108205170A - Backlight module, display device and electronic equipment - Google Patents
Backlight module, display device and electronic equipment Download PDFInfo
- Publication number
- CN108205170A CN108205170A CN201810109074.7A CN201810109074A CN108205170A CN 108205170 A CN108205170 A CN 108205170A CN 201810109074 A CN201810109074 A CN 201810109074A CN 108205170 A CN108205170 A CN 108205170A
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- China
- Prior art keywords
- guide plate
- light source
- light guide
- source assembly
- backlight module
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
-
- 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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The application provides a kind of backlight module, including light source assembly, light guide plate and at least one diffusion barrier, light guide plate includes the first opposite face, the second face and the incidence surface for being connected to first face and the second face, light source assembly corresponds to the incidence surface and sets and shine towards the incidence surface, the light of light source assembly transmitting enters the light guide plate by incidence surface, and pass through the light guide plate and carry out leaded light, at least one diffusion barrier is set in the transmission path of the light source assembly, and the light for the light source assembly to be emitted is diffused into the position far from the light source assembly.The application also provides display device and electronic equipment.The light that light source assembly is sent out, can be more uniformly directed at the different zones of light guide plate by the backlight module of the application offer, display device and electronic equipment, and so that backlight module is capable of providing backlight evenly, improve the whole display effect of electronic equipment.
Description
Technical field
This application involves a kind of electronic equipment, more particularly to a kind of display device and electronic equipment with backlight module with
And the backlight module.
Background technology
In the prior art, in order to realize the display backlight function of electronic equipment, typically on a side of electronic equipment
Illuminating source component is set, the display area of electronic equipment is then directed at by light guide plate to realize display backlight function.With
The increase of the display size of electronic equipment at present, can there are different display area luminance differences it is more apparent the problem of, influence entirety
Display effect.
Invention content
The application's is designed to provide a kind of backlight module, display device and electronic equipment, effectively balanced can shine
Light source assembly is in different location.
In order to solve the above-mentioned technical problem, a kind of backlight module is provided, the backlight module includes light source assembly, light guide plate
And at least one diffusion barrier, the light guide plate include the first opposite face, the second face and are connected to first face
With the incidence surface in the second face, the light source assembly corresponds to the incidence surface and sets and shine towards the incidence surface, the light source
The light of component transmitting enters the light guide plate by the incidence surface, and passes through the light guide plate progress leaded light, and described at least one
A diffusion barrier is set in the transmission path of the light source assembly, and the light for the light source assembly to be emitted is diffused into far from institute
State the position of light source assembly.
On the other hand, a kind of display device is provided, the display device includes display panel and backlight module, the backlight
Module includes light source assembly, light guide plate and at least one diffusion barrier, and the light guide plate includes the first opposite face, second
Face and the incidence surface for being connected to first face and the second face, the light source assembly correspond to incidence surface setting and towards institutes
It states incidence surface to shine, the light of the light source assembly transmitting enters the light guide plate, and pass through the leaded light by the incidence surface
Plate carries out guide-lighting, and at least one diffusion barrier is set in the transmission path of the light source assembly, for by the light source group
The light of part transmitting is diffused into the position far from the light source assembly.The display panel is laminated in the first face of the light guide plate
On, the display panel has display area and the non-display area being connect with the display area, the light source assembly setting
In the position of the correspondence of the backlight module display area, at least one diffusion barrier is used to send out the light source assembly
The light penetrated is diffused into the position of the correspondence display area in the first face of the light guide plate.
In another aspect, providing a kind of electronic equipment, the electronic equipment includes display device, and the display device includes aobvious
Show panel and backlight module, the backlight module includes light source assembly, light guide plate and at least one diffusion barrier, the light guide plate
Including including the first opposite face, the second face and the incidence surface for being connected to first face and the second face, the light source assembly
The corresponding incidence surface sets and shines towards the incidence surface, and the light of the light source assembly transmitting is entered by the incidence surface
The light guide plate, and pass through the light guide plate and carry out leaded light, at least one diffusion barrier is set to the hair of the light source assembly
In rays diameter, the light for the light source assembly to be emitted is diffused into the position far from the light source assembly.The display panel
It is laminated on the first face of the light guide plate, the display panel has display area and connect with the display area non-aobvious
Show region, the light source assembly is set to the position of the correspondence display area of the backlight module, at least one expansion
Film is dissipated for the light that the light source assembly emits to be diffused into the correspondence display area in the first face of the light guide plate
Position.
Backlight module that the application provides, display device and electronic equipment, can be by light that light source assembly is sent out evenly
Ground is directed at the different zones of light guide plate, and so that backlight module is capable of providing backlight evenly, improves the whole of electronic equipment
Body display effect.
Description of the drawings
It, below will be to needed in embodiment in order to illustrate more clearly of the technical solution of the embodiment of the present application
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the application, general for this field
For logical technical staff, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the cross-sectional view of the display device in the application first embodiment.
Fig. 2 is that the light of the light source assembly transmitting in one embodiment of the application passes through the light path schematic diagram of diffusion barrier.
Fig. 3 is the close-up schematic view of Fig. 2.
Fig. 4 is the cross-sectional view of the display device in the application second embodiment.
Fig. 5 is the cross-sectional view of the display device in the application 3rd embodiment.
Fig. 6 is the cross-sectional view of the display device in the application fourth embodiment.
Fig. 7 is the cross-sectional view of the display device in the 5th embodiment of the application.
Fig. 8 is the cross-sectional view of the display device in the application sixth embodiment.
Fig. 9 is the cross-sectional view of the display device in the 7th embodiment of the application.
Figure 10 is the cross-sectional view of the display device in the 8th embodiment of the application.
Figure 11 is the schematic top plan view for illustrating light guide plate and stent in one embodiment of the application.
Figure 12 is the schematic diagram of the electronic equipment in one embodiment of the application.
Specific 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 clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, those of ordinary skill in the art are obtained every other under the premise of not making the creative labor
Embodiment shall fall in the protection scope of this application.
In the description of the embodiment of the present application, it is to be understood that the orientation or position relationship of the instructions such as term " thickness " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the application and simplifies description rather than imply or refer to
Show that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The limitation of the application.
Referring to Fig. 1, the cross-sectional view for the display device 100 in one embodiment of the application.The display device
100 include backlight module 1 and display panel 2.The backlight module 1 is set to the lower section of the display panel 2, for for institute
It states display panel 2 and backlight is provided.
As shown in Figure 1, the backlight module 1 includes light source assembly 11, light guide plate 12 and at least one diffusion barrier 21, institute
Light guide plate 12 is stated to include the first opposite face F1, the second face F2 and be connected to entering between the first face F1 and the second face F2
Smooth surface R1.The light source assembly 11 corresponds to the incidence surface R1 and sets and shine towards the incidence surface R1, the light source assembly
The light of 11 transmittings enter the light guide plate 12 by the incidence surface R1, and by the light guide plate 12 by light guide to corresponding positions
It puts, wherein, at least one diffusion barrier 21 is used at least part light that the light source assembly 11 emits being diffused into far from institute
State the position of light source assembly 11.Wherein, the incidence surface R1 is the side of the light guide plate 12.
It thus, can be by light by setting at least one diffusion barrier 21 in the transmission path of light source assembly 11 in the application
At least part light that source component 11 emits is diffused into the position far from light source assembly 11, so as to avoid close to light source assembly 11
Position is excessively bright and position far from light source assembly 11 is excessively dark, it is balanced close to and far from light source assembly 11 position brightness.
In some embodiments, at least one diffusion barrier 21 is to be set close to light source assembly 11 and positioned at the light source
In the transmission path of component 11.In some embodiments, the distance of at least one diffusion barrier 21 and the light source assembly 11
It it is, for example, less than 5 millimeters etc. less than pre-determined distance.
As shown in Figure 1, in some embodiments, at least one diffusion barrier 21 includes diffusion barrier 13, the diffusion barrier
13 are set between the light source assembly 11 and the incidence surface R1 of the light guide plate 12.The light that the light source assembly 11 is sent out is first
After being diffused by the diffusion barrier 13, the incidence surface R1 of the light guide plate 12 is entered back into.
Wherein, after the diffusion barrier 13 causes the light that the light source assembly 11 is sent out to be spread by diffusion barrier 13, with light source
The angle of the central ray for the light beam that component 11 is sent out becomes smaller, so as to which the light that light source assembly 11 is sent out can emit to the light guide plate
12 position further from light source assembly 11.So as to, can by light guide plate 12 by light guide to further from the position of light source assembly 11,
Avoid the problem of part caused by light more concentrates on light source assembly 11 nearby is excessively bright.
More specifically, as shown in Figure 1, the light source assembly 11 includes exit facet S1, the light source assembly 11 is passes through
It states exit facet S1 transmitting light to come out, the exit facet S1 of the light source assembly 11 corresponds to the light guide plate 12 and sets, the diffusion barrier
13 be to be set between the exit facet S1 of the light source assembly 11 and the incidence surface R1 of the light guide plate 12.In some embodiments
In, the positional structure relationship of the light source assembly 11 and light guide plate 12 meets：The central ray C1 and institute that light source assembly 11 emits
The incidence surface R1 for stating light guide plate 12 is vertical, and the geometric center of incidence surface R1 described in face.
Also referring to Fig. 2, the light for the transmitting of light source assembly 11 passes through the schematic diagram of diffusion barrier 13.It is as shown in Fig. 2, described
The light that light source assembly 11 is sent out is the pencil light with certain angle of divergence θ 1, after the diffusion barrier 13, the pencil light
The angle of divergence is adjusted to less than the angle of divergence θ 2 of the angle of divergence θ 1, wherein, the angle of divergence θ 1 and angle of divergence θ 2 are referred to most
Angle between the central ray C1 of pencil light that big stray light and the light source assembly 11 are sent out.
So as to which script can be emitted to the light close to 11 position of light source assembly by the diffusion barrier 13 and be adjusted to transmitting extremely
With light source assembly 11 apart from farther position, effectively the luminous of light source assembly 11 is balancedly diffused to close to and far from light source
The position of component 11.
Referring to Fig. 3, the partial enlarged view for Fig. 2, is exaggerated in Fig. 2 and identifies III regions.As shown in figure 3, the expansion
It dissipates film 13 and includes multiple spaced reflecting strips 131, there is interval, each reflecting strips 131 are equal between adjacent reflecting strips 131
With reflective surface M1, and the reflective surface M1 of reflecting strips 131 and the extensional surface 130 of diffusion barrier 13 have angle.Wherein, positioned at institute
The relatively described central ray C1 of reflecting strips 131 for stating the central ray C1 both sides of the pencil light of light source assembly 11 is symmetrical arranged, and
The reflective surface M1 of reflecting strips 131 is tilted towards the direction of light guide plate 12.The light of the light source assembly transmitting passes through reflecting strips 131
Between interval be emitted to the reflective surface M1 of light-emitting section 131, after being reflected by reflective surface M1 with the central ray C1
Smaller angle is sent to light guide plate 12, so as to be sent to the position further from light source assembly 11 in light guide plate 12.
As shown in Figure 1, the backlight module 1 further includes reflecting plate 14, the reflecting plate 14 fits in the light guide plate 12
The second face F2, for light source assembly 11 to be emitted to the light of the second face F2 of the light guide plate 12 by the incidence surface R1
The first face F1 of the light guide plate 12 is reflexed to, and passes through the first face F1 and launches.First face of the light guide plate 12
The light that F1 launches includes the light that is directly launched by light guide plate 12 of light source assembly 11 and is reflected by reflecting plate 14
The light to come over.First face F1 of the light guide plate 12 forms the light-emitting surface of the backlight module 1, and is the display panel 2
Backlight is provided.
Wherein, the reflecting plate 14 can be reflectance coating, reflector plate or be plated in anti-on the second face F2 of light guide plate 12
Luminescent material.
As shown in Figure 1, in some embodiments, the size of the reflecting plate 14 is less than the size of the light guide plate 12.Institute
Stating the side 141 of reflecting plate 14 and the incidence surface R1 of the light guide plate 12 has certain distance, and causes the light guide plate 12
The subregion of the close incidence surface R1 of second face F2 is not provided with the reflecting plate 14.
Obviously, in some embodiments, the size of the reflecting plate 14 can also be equal to the size of the light guide plate 12, and whole
Body is covered on the second face F2 of light guide plate 12.
In some embodiments, as shown in Figure 1, the diffusion barrier 13 and the light source assembly 11 and the light guide plate 12
Incidence surface R1 be in close contact.
Referring to Fig. 4, the cross-sectional view for the display device 100 in another embodiment.In another embodiment, institute
It states diffusion barrier 13 to fit on the light source assembly 11, and the light source assembly 11 for being fitted with diffusion barrier 13 and the light guide plate
Pre-determined distance, such as 2 millimeters are separated between 12 incidence surface R1.Specifically, the diffusion barrier 13 is fits in the light source
On the exit facet S1 of component 11, and the exit facet S1 of the light source assembly 11 is completely covered so that the light source assembly 11 is sent out
All light be all diffused by the diffusion barrier 13.
Referring to Fig. 5, the cross-sectional view for the display device 100 in another embodiment.In another embodiment, institute
Diffusion barrier 13 is stated to fit on the incidence surface R1 of the light guide plate 12, and the light guide plate 12 for being fitted with diffusion barrier 13 with
Pre-determined distance, such as 2 millimeters are separated between the light source assembly 11.Wherein, the diffusion barrier 13 can fit in the leaded light
The entire incidence surface R1 of plate 12 can also fit in the subregion of the incidence surface R1 of the light guide plate 12.In some embodiments,
The area of the incidence surface R1 is more than the area of the exit facet S1 of the light source assembly 11, the size of the diffusion barrier 13 and position
The diffusion barrier 13 will all be passed through by the light that the light source assembly 11 is launched by meeting.
So as to, in some embodiments, one in light source assembly 11 or light guide plate 12 with diffusion barrier 13 have it is default away from
From without fitting closely.
As shown in Fig. 1,4,5, the backlight module 1 includes at least one anti-reflection film 15, at least one anti-reflection film 15
It is set on the first face F1 of the light guide plate 12, the transmission of light that the first face F1 for improving the light guide plate 12 is sent out
Rate.Specifically, at least one anti-reflection film 15 includes lower anti-reflection film 151 and upper anti-reflection film 152, lower 151 He of anti-reflection film
Upper anti-reflection film 152 is stacked on the first face F1 of the light guide plate 12.
Wherein, as shown in Fig. 1,4,5, in some embodiments, the backlight module 1 further includes stent 16, the stent
16 are located at the side of the second face F2 of the light guide plate 12, for carrying the light source assembly 11, the light guide plate 12 and institute
State reflecting plate 14.
Wherein, as shown in Fig. 1,4,5, in some embodiments, the display panel 2 is liquid crystal display panel, including under
Polarizing layer 21, TFT (thin film transistor (TFT)) array layer 22, liquid crystal layer 23, colored filter 24 and upper polarizing layer 25, it is described lower inclined
Photosphere 21, TFT (thin film transistor (TFT)) array layer 22, liquid crystal layer 23, colored filter 24 and upper polarizing layer 25 are stacked gradually and are set
It is placed on the anti-reflection film 15 of the backlight module 1.
So as to when the light that the light source assembly 11 of backlight module 1 is sent out passes through the second face of light guide plate 12 and described anti-reflection
After film 15 is transmitted through the display panel 2, by the liquid crystal molecule of conducting corresponding in lower polarizing layer 24 and liquid crystal layer 23, then lead to
It crosses colored filter 24 to be filtered and form color of light, so as to form corresponding colored display picture.
Wherein, as shown in Fig. 1,4,5, the display device 100 includes display area A1 and non-display area A2, described
Display panel 2 is located substantially at the display area A1 of display device 100, and extends partially into the non-display area and A2.Wherein, institute
The encapsulation part 221 that there is tft array layer 22 relatively described lower polarizing layer 21 to protrude is stated, the encapsulation part 221 extends described non-
Most of region of display area A2.The light source assembly 11 is set to the non-display area A2 of the display device 100.
Referring to Fig. 6, the cross-sectional view for the display device 100 in the application fourth embodiment.With the of front
One difference lies in, the position of the setting of diffusion barrier 13 and structure and has certain difference to 3rd embodiment.
As shown in fig. 6, the diffusion barrier 13 is set on the second face F2 of the light guide plate 12, and the diffusion barrier 13 leans on
The nearly light source assembly 11, the diffusion barrier 13 are used to the light that the light source assembly 11 is incident on itself being diffused into described
On the position far from the light source assembly 11 of first face F1.
So as to which the dipped beam that light source assembly 11 emits is diffused by the diffusion barrier 13 and reaches far from light source assembly 11
Position, equally can it is balanced close to and far from light source assembly 11 position brightness.
Wherein, when the diffusion barrier 13 is on the second face F2 for set the light guide plate 12, the diffusion barrier 13 can be
With fine porous structure, the diffusion angle for reaching the light of itself should can be corrected with fine porous structure, even if
The light radiation area increase of the light on diffusion barrier must be penetrated, so as to be diffused into the light being incident on itself far from light source group
On the position of part 11, brightness of the light guide plate 12 close to the region of light source assembly 11 is reduced, increases light guide plate 12 far from light source
The brightness in the region of component 11.Certainly, in other embodiments, the diffusion barrier 13 can also be by the reflection bar group of different angle
Into.
As shown in fig. 6, in some embodiments, the subregion of the second face F2 is be overlapped with the diffusion barrier 13.That is,
The diffusion barrier 13 is provided only on the subregion of the second face F2 of the light guide plate 12.
Wherein, the diffusion barrier 13 is specially the correspondence non-display area A2 for being arranged on the 12 second face F2 of light guide plate
In region.The all or most of the reflecting plate 14 can be to be arranged on the correspondence viewing area of the 12 second face F2 of light guide plate
In the region of domain A1.
In some embodiments, the side 132 of the close light source assembly 11 of the diffusion barrier 13 and the light guide plate 12
Incidence surface R1 is concordant.Obviously, in another embodiment, the side 132 of the close light source assembly 11 of the diffusion barrier 13
Can be spaced apart with the incidence surface R1 of the light guide plate 12, the close incidence surface R1's of the second face F2 of the light guide plate 12
Subregion is not provided with the diffusion barrier 13.
As shown in fig. 6, in the fourth embodiment, the reflecting plate 14 and the diffusion barrier 13 are arranged side by side.Wherein, it is described
Reflecting plate 14 is compared with the diffusion barrier 13 more far from the light source assembly 11.
In some embodiments, as shown in Figure 6 between the reflecting plate 14 and the diffusion barrier 13 between be separated with default spacing.
So as to prevent diffusion barrier 13 and reflecting plate 14 from interfering when mounted, the easy degree that backlight module 1 assembles is improved.
Obviously, in further embodiments, it is very close to each other between the reflecting plate 14 and the diffusion barrier 13, for mutually patch
Nearly setting.
As shown in fig. 6, the incidence surface R1 of the light source assembly 11 and the light guide plate 12 fits closely setting, the leaded light
The size of the incidence surface R1 of plate 12 can be greater than or equal to the size of the exit facet S1 of the light source assembly 11.
As shown in fig. 6, the first shading glue J1 can partly be bent the top for extending to the upper anti-reflection film 15.
Obviously, such as preceding second embodiment shown in Fig. 4 or 3rd embodiment shown in fig. 5 are described, in some realities
It applies in example, can also have default spacing between the light source assembly 11 and the incidence surface R1 of the light guide plate 12, without contacting,
The size of the incidence surface R1 of the light guide plate 12 is more than the size of the exit facet S1 of the light source assembly 11 so that light source assembly 11
The light sent out can be emitted to the incidence surface R1 of light guide plate 12.
Turning back to reference to figure 1, as shown in Figure 1, the light source assembly 11 includes illuminating part 111,112 and of printed circuit board
Flexible PCB 113, the illuminating part 111 are set on the printed circuit board 112, and the printed circuit board 112 is electrically connected
In the flexible PCB 113.
Wherein, as shown in Figure 1, the flexible PCB 113 extends partially into the second face F2 of the light guide plate 12, that is, prolong
Extend to the region for being not provided with reflecting plate 14 of the second face F2 of the light guide plate 12.In some embodiments, the flexible circuit
Plate 113 extends partially into the second face F2 of the light guide plate 12 and extends to the setting reflection of the second face F2 of the light guide plate 12
The region of plate 14, and the subregion of reflecting plate 14 is caused to be located in the second face F2 of the light guide plate 12 and the flexible electrical
Between road plate 113.
Obviously, as shown in fig. 6, when being additionally provided with the diffusion barrier 13 on the second face F2 of light guide plate 12, the diffusion
There is pre-determined distance, the flexible PCB 113 is extends partially into the light guide plate 12 between film 13 and the incidence surface R1
The second face F2 the region for being not provided with diffusion barrier 13.Likewise, in some embodiments, 113 part of flexible PCB
The the second face F2 for extending to the light guide plate 12 and the second face F2's for extending to the light guide plate 12 is provided with diffusion barrier 13
Region, and the subregion of diffusion barrier 13 is caused to be located in the second face F2 of the light guide plate 12 and the flexible PCB
Between 113.
Obviously, in other embodiments, the backlight module 1 can also be provided with diffusion barrier 13 and Fig. 1 in Fig. 6 simultaneously
In diffusion barrier 13, that is, backlight module 1 may be provided between light source assembly 11 and the incidence surface R1 as shown in Figs. 1-3
Diffusion barrier 13, and also diffusion barrier 13 as shown in Figure 6 is provided on the second face F2 of light guide plate 12 simultaneously.
Thus due to the corresponding position that the part of the flexible PCB 113 is the second face F2 for being arranged on light guide plate 12,
So as to reduce non-display area A2 along from the length on non-display area A2 to display area A1 directions.
The printed circuit board 112 is described for carrying the illuminating part 111 and providing power supply for the illuminating part 111
Flexible PCB 113 is for establishing the printed circuit board 112 and other function modules, such as the connection of mainboard, to realize hair
The controls such as the power supply control of light part 111.
In some embodiments, the illuminating part 111 can be to be embedded in the printed circuit board 112, so as to effectively subtract
Small light source component 11 effectively reduces non-display area A2 along from the length on non-display area A2 to display area A1 directions
Along from the length on non-display area A2 to display area A1 directions.
In some embodiments, the illuminating part 111 can be one kind in luminescence chip or LED light.
It is on the second face F2 by the lower section that flexible PCB 113 is set on to light guide plate 12, flexible PCB 113 is avoided to set
To the influence of the emergent ray of light guide plate 12 when being placed in i.e. the first face F1 in top of light guide plate 12, the knot of backlight module 1 is optimized
Structure further improves 1 reliability of backlight module.
As shown in Fig. 1,4,5, in some embodiments, the stent 16 is extends the light source assembly 11 and described leads
The lower section of tabula rasa 12, and extend vertically past the light source group from the side far from the light guide plate 12 of the light source assembly 11
Part 11 with the exit facet S1 back to face S2.
Wherein, the stent 16 is to extend to the position substantially concordant with the surface of the upper anti-reflection film 152 of the backlight module 1
It puts.
As shown in Fig. 1,4,5, the display device 100 further includes the first shading glue J1, the first shading glue J1 from institute
Extending to for stent 16 is stated to start to extend with the end D1 of the substantially flush position of the upper anti-reflection film 152 of the backlight module 1, and
Extend over the upper anti-reflection film 152 of the backlight module 1 positioned at the part of non-display area A2 and to be used to avoid light source group
Part 11 emit light emitting to display device 100 non-display area A2.
Wherein, as shown in Fig. 1,4,5, the second shading glue J2 is additionally provided on the first shading glue J1, described second hides
The size of optical cement J2 is less than the size of the first shading glue J1.Wherein, the second shading glue J2 is close to the stent 16
The side of end D1 is concordant with the first shading glue J1, and the second shading glue J2 extends over the first shading glue J1's
Portion, and form step surface on the first shading glue J1.Wherein, the second shading glue J2 and the tft array
The end of encapsulation part 221 that there is layer 22 relatively described lower polarizing layer 21 to protrude contradicts bonding, and forms the tft array layer 22
Outer frame glue.
Referring to Fig. 7, the cross-sectional view for the display device 100 in the 5th embodiment of the application.As shown in fig. 7,
The backlight module 1 further includes the diffusion barrier 17 being set between the first face F1 of the light guide plate 12 and the anti-reflection film 15.
That is, aforementioned at least one diffusion barrier 21 further includes diffusion barrier 17 as shown in Figure 7.
The diffusion barrier 17 is for being further diffused the light of the first face F1 outgoing, so that reaching aobvious
Show that the light of panel 2 is more uniform.
Wherein, the diffusion barrier 17 can be similar with the structure of diffusion barrier 13 shown in Fig. 3, including multiple spaced anti-
Striation has interval between adjacent reflecting strips, and each reflecting strips are respectively provided with reflective surface, the difference is that the diffusion barrier 17
Reflective surface and the angle of extensional surface 171 of diffusion barrier 17 be rambling, it is thus possible to the work by the light guide plate 12
The light that the second face F2 for light-emitting surface is emitted is spread to all angles, and so that being supplied to the backlight of display panel 2 more
Uniformly.
Wherein, the diffusion barrier 17 can be completely covered on the second face F2 of the light guide plate 12 or be partially covered on
On second face F2 of light guide plate 12.In some embodiments, the diffusion barrier 17 is in addition to being completely covered the of the light guide plate 12
Two face F2 are partially covered on except the second face F2 of light guide plate 12, are also extended in the part area of the light source assembly 11
Domain.
Referring to Fig. 8, the cross-sectional view for the display device 100 in application sixth embodiment.Shown in Fig. 8 6th
Embodiment is the difference of holder part with the main distinction of Fig. 1, embodiment illustrated in fig. 7.
As shown in figure 8, in the sixth embodiment, the stent 16 includes being laminated in the light guide plate 12 and close to described the
The first plate 161, the stent 16 of F1 further includes the second plate 162 of relatively described first plate, 161 bending extension on one side
With the third plate 163 extended by 162 bending of the second plate.Second plate 162 is close to the light source assembly 11.Institute
It is opposite with first plate 161 to state third plate 162, and covers the light source assembly 11, using the branch as light source assembly 11
Support lid prevents pressure of the light source assembly 11 by the component in the display panel 1 of top.
In one embodiment, the light source assembly 11 and the light guide plate 12 is completely covered in first plate 161.Institute
It can be adhered to the reflecting plate 14 far from 12 side of light guide plate through bonded adhesives to state the first plate 161.First plate
Set bonded adhesives mutually be bonded between part 161 and the printed circuit board 112 of the light source assembly 11.First double faced adhesive tape 611 is viscous
It is connected to the region that printed circuit board 112 is not covered by the flexible PCB 113.The 163 face light source group of third plate
The side of part 11 also sets up the foam rubber 18 for being bonded the light source assembly 11.The foam rubber 18 is also adhered to the light source assembly
On 11 printed circuit board 112, realize that the third plate 163 is bonded with the light source assembly 11.
In one embodiment, it is mutually be bonded by bonded adhesives between second plate 162 and the light source assembly 11.Tool
Body, second plate 162 is mutually Nian Jie with the flexible PCB 113 of light source assembly 11.First plate 161, the second plate
Part 162 and third plate 163 have the performance that is in the light, and first plate 161, the second plate 162 and third plate 163 coat institute
Light guide plate 12 and the light source assembly 11 are stated, prevents 1 light leakage of backlight module.First plate 161, the second plate 162
The protective shell of the backlight module 1 is also formed with third plate 163, ensures the safety of the backlight module 1.
In one embodiment, first plate 161 forms sinking space in the region of the correspondence light source assembly 11
The receiving space of 161a, the sinking space 161a on the increase direction vertical with light guide plate 12.Specifically, described first
Plate 161 is bent towards the direction far from light source assembly 11 being generally corresponding to the intersecting position of the light source assembly 11 and light guide plate 12
The arragement direction of source of parallel light component 11 and light guide plate 12 extends after pre-determined distance, and in the region for being generally corresponding to light source assembly 11
Form sinking space 161a.The sinking space 161a also with 113 face of flexible PCB.In the sinking space 161a
A part for the light source assembly 11, part of the flexible PCB 113 etc. can be accommodated.First plate 161 is logical
It crosses bending and forms the sinking space 161a, reduce the non-display area A2 of the backlight module 1 along from non-display area
Length on domain A2 to display area A1 directions increases the accounting of display area A1.
In another embodiment, Fig. 9 is please referred to, the cross section for the display device 100 in the 7th embodiment of application shows
It is intended to.First plate 161 is equipped with through-hole 161b, the through-hole 161b and 11 face of light source assembly, the backlight mould
Group 1 further includes photo-shield strip 19, and the photo-shield strip 19 covers the through-hole 161b.The through-hole 161b also with the flexible PCB
113 faces.The flexible PCB 113 is adhered to the light guide plate 12.By opening up the through-hole in first plate 161
161b facilitates the light source assembly 11 and the flexible PCB 113 to be assembled with the light guide plate 12.First in the third plate
Foam rubber 18 is bonded on 163；Then the light source assembly 11 is adhered to across the through-hole 161b in the foam rubber 18；Institute
It states flexible PCB 113 and passes through the through-hole 161b with the light source assembly 11, be stable in 611 inside of the first plate；Again
Afterwards, the reflecting plate 14 is fitted in the second face F2 of light guide plate 14, and the coating adhesive on the second face F2 of the light guide plate 12
Water is to be bonded the flexible PCB 113 and the light guide plate 10 is fixed on 161 inside of the first plate, by institute
Diffusion barrier 17, lower anti-reflection film 61 and upper anti-reflection film 62 is stated to be in turn secured on the first face F1 of the light guide plate 12；Finally, by institute
It states photo-shield strip 19 and covers the through-hole 161b.There is part and be laminated in the photo-shield strip 19 and first plate 161, and with it is described
There is part and be laminated in the second plate 162, to increase the being firmly combined with property of the photo-shield strip 19, and prevent the through-hole 161b from leaking
Light.
Referring to Fig. 10, the cross-sectional view for the display device 100 in the 8th embodiment of application.Shown in Fig. 9
Seven embodiments relate generally to the variation of the structure of light source assembly 11, give the mode of texturing of light source assembly 11, and other structures can
Other embodiment is applicable in, can refer to other embodiment.
As shown in Figure 10, the flexible PCB 113 has the first connecting portion 1131 and second connecting portion of bending connection
1132, connection, the second connecting portion is laminated in 1131 part of first connecting portion and the second face F2 of the light guide plate 12
1132 extend away from the direction of the second face F2 of the light guide plate 12, and the second connecting portion 1132 is fitted and connected in institute
State printed circuit board 112.
In the present embodiment, 113 bent of flexible PCB is L-shaped.The carrying of the first connecting portion 1131 printing electricity
Road plate 112 and illuminating part 111, and the direction of first connecting portion 1131 towards the close light guide plate 12 extends and is partly attached at
On second face F2 of light guide plate 12.Wherein, when being provided with diffusion barrier 17 on the second face F2 of the light guide plate 12, the diffusion
Film 17 can be located between the second face F2 of the light guide plate 12 and the first connecting portion 1131 of the flexible PCB 113.It is described
Second connecting portion 1132 is equipped with the pad P1 for being electrically connected the printed circuit board 112.Pad P1 coverings second connection
Portion 1132.The width that the relatively described second connecting portions 1132 of the pad P1 are protruded is more than the thickness of the first connecting portion 1131
Degree so that the non-display area A2 of the backlight module 1 is along from the length on non-display area A2 to display area A1 directions
Further reduce, so as to further increase the accounting of display area A1.
Obviously, the flexible PCB 113 of aforementioned light source assembly 11 as shown in Figure 1 also has and printed circuit board 112
The pad of electrical connection.
1 is please referred to Fig.1, the light guide plate 12 also there is light extraction side R2, the light extraction side R2 to be connected to described first
It is parallel with the side R1 between face F1 and the second face F2.The side R1 of the light guide plate 12 is equipped with the first positioning region
121, the stent 16 further includes the 4th plate 164 extended by 161 bending of the first plate, and the 4th plate 164 pastes
The nearly side R1, and equipped with the second positioning region 165 coordinated with first positioning region 121.
In present embodiment, the 4th plate 164 side R1 upward to the X of the light guide plate 12 is blocked, anti-leak-stopping
Light.The side R1 is equipped with multiple first positioning regions 121.It is fixed that 4th plate 164 is correspondingly provided with multiple described second
Position portion 165 coordinates with multiple first positioning regions 121, with ensure the spacing between the light guide plate 12 and the stent 16 compared with
It is small, and ensure that the assembly precision of the light guide plate 12 and the stent 16 is higher.First positioning region 121 can be groove,
Second positioning region 165 can be boss.Certainly, in other embodiments, first positioning region 121 can also be convex
Platform, second positioning region 165 can also be grooves.
2 are please referred to Fig.1, is the schematic diagram figure of electronic equipment 11, the electronic equipment 200 includes aforementioned any embodiment institute
The display device 100 stated.
Wherein, the electronic equipment 200 can be the electronic products such as display, television set, mobile phone, tablet computer.It is described aobvious
Showing device 100 can be then that electronic equipment 200 includes backlight and the structure of display panel.
It should be noted that a certain embodiment of the application may only introduce the variation to one or a few components,
When other parts do not introduced or do not introduced there are different modes of texturing in other embodiments, also fit in this embodiment
With.For example, during the structure change of light source assembly 11 in Fig. 1,7, any side in Fig. 1,4,5,6 may be used in diffusion barrier 13
Formula.
Obviously, the electronic equipment 200 may also include other elements, such as processor, memory etc., due to this
Application improvement is unrelated, therefore is not described herein.
The backlight module of the application offer, display device and electronic equipment, the light that can send out light source assembly 11 are more equal
It is directed at the different zones of light guide plate 12 evenly, and so that backlight module is capable of providing backlight evenly, improves electronic equipment
200 whole display effect.
It is the embodiment of the embodiment of the present application above, it is noted that those skilled in the art are come
It says, under the premise of the embodiment of the present application principle is not departed from, several improvements and modifications can also be made, these improvements and modifications
It is considered as the protection domain of the application.
Claims (27)
1. a kind of backlight module, which is characterized in that the backlight module includes light source assembly, light guide plate and at least one diffusion
Film, the light guide plate include the first opposite face, the second face and the incidence surface for being connected to first face and the second face,
The light source assembly corresponds to the incidence surface and sets and shine towards the incidence surface, and the light of the light source assembly transmitting passes through institute
Incidence surface is stated into the light guide plate, and passes through the light guide plate and carries out leaded light, at least one diffusion barrier is set to described
In the transmission path of light source assembly, the light for the light source assembly to be emitted is diffused into the position far from the light source assembly.
2. backlight module according to claim 1, which is characterized in that at least one diffusion barrier includes diffusion barrier, institute
Diffusion barrier is stated to be set between the incidence surface of the light source assembly and the light guide plate.
3. backlight module according to claim 2, which is characterized in that the backlight module further includes reflecting plate, described anti-
The second face that plate fits in the light guide plate is penetrated, for light source assembly to be emitted to the of the light guide plate by the incidence surface
The light in two faces reflexes to the first face of the light guide plate.
4. backlight module according to claim 3, which is characterized in that the size of the reflecting plate is less than the light guide plate
Size, the side of the reflecting plate and the incidence surface of the light guide plate have preset distance.
5. backlight module according to claim 2, which is characterized in that the light source assembly includes exit facet, the light source
It is come out by the outgoing surface launching light, the exit facet of the light source corresponds to the light guide plate setting, and the diffusion barrier is set to
Between the incidence surface of the exit facet of the light source and the light guide plate.
6. backlight module according to claim 5, which is characterized in that the exit facet of the diffusion barrier and the light source assembly
And the incidence surface of the light guide plate is in close contact.
7. backlight module according to claim 5, which is characterized in that the diffusion barrier fits in the light guide plate
On incidence surface, and between the light guide plate for being fitted with diffusion barrier and the light source between be separated with pre-determined distance.
8. backlight module according to claim 5, which is characterized in that the diffusion barrier fits in going out for the light source assembly
It penetrates on face, and the incidence surface of the light source assembly for being fitted with diffusion barrier and the light guide plate has pre-determined distance.
9. backlight module according to claim 2, which is characterized in that the diffusion barrier includes multiple spaced reflective
Item, has interval between adjacent reflecting strips, and each reflecting strips are respectively provided with reflective surface, and the reflective surface of reflecting strips and diffusion barrier
Extensional surface has angle.
10. backlight module according to claim 9, which is characterized in that the central ray sent out positioned at the light source assembly
The relatively described central ray of the reflecting strips of both sides is symmetrical arranged, and the reflective surface of reflecting strips is tilted towards the light guide plate.
11. according to claim 1-10 any one of them backlight modules, which is characterized in that the backlight module further includes lower increasing
Permeable membrane and upper anti-reflection film, the lower anti-reflection film and the stacking of upper anti-reflection film are set to the first face of the light guide plate.
12. backlight module according to claim 10, which is characterized in that the backlight module, which further includes, is set to described lead
The second diffusion barrier between first face of tabula rasa and the anti-reflection film, for further being carried out to the light of first face outgoing
Diffusion.
13. backlight module according to claim 12, which is characterized in that second diffusion barrier includes multiple be alternatively arranged
Reflecting strips, there is between adjacent reflecting strips interval, each reflecting strips are respectively provided with reflective surface, the multiple reflecting strips it is reflective
The angle of the extensional surface of face and diffusion barrier is mixed and disorderly unordered.
14. according to claim 1-10 any one of them backlight modules, which is characterized in that the light source assembly includes shining
Part, printed circuit board and flexible PCB, the illuminating part are set on the printed circuit board, and the printed circuit board is electrically connected
It is connected to the flexible PCB.
15. backlight module according to claim 14, which is characterized in that the flexible PCB 113 extends partially into institute
State the second face of light guide plate.
16. backlight module according to claim 14, which is characterized in that the illuminating part is embedded at the printed circuit board
In.
17. backlight module according to claim 14, which is characterized in that the flexible PCB has the of bending connection
Second face of one connecting portion and second connecting portion, the first connecting portion part and the light guide plate, which is laminated, to be connected, and described second
Connecting portion extends, and the second connecting portion is fitted and connected in the printing away from the direction in the second face of the light guide plate
Circuit board.
18. backlight module according to claim 17, which is characterized in that the second connecting portion, which is equipped with, is electrically connected the print
The pad of printed circuit board, the pad cover the second connecting portion.
19. according to claim 3-10 any one of them backlight modules, which is characterized in that the backlight module further includes branch
Frame, the stent include being laminated in the light guide plate and close to first plate in first face, and first plate is used to hold
Carry the light guide plate and the reflecting plate.
20. backlight module according to claim 19, which is characterized in that the stent is further included to be rolled over by first plate
Second plate of curved extension, second plate is close to the light source assembly.
21. backlight module according to claim 20, which is characterized in that set between first plate and the light guide plate
It puts the first double faced adhesive tape to be mutually bonded, sets the second double faced adhesive tape mutually be bonded between second plate and the light source assembly.
22. backlight module according to claim 20, which is characterized in that the stent is further included to be rolled over by second plate
The third plate of curved extension, the third plate is opposite with first plate, and covers the light source assembly.
23. backlight module according to claim 19, which is characterized in that first plate is in the correspondence light source assembly
Region form sinking space, the sinking space is for increasing the receiving space on the direction vertical with light guide plate.
24. backlight module according to claim 19, which is characterized in that first plate is additionally provided with through-hole, described logical
Hole and the light source face, the backlight module further include photo-shield strip, and the photo-shield strip covers the through-hole.
25. a kind of display device, which is characterized in that the display device includes display panel and claim 1 ￣ 23 is any one
Backlight module described in, the display panel are laminated on the first face of the light guide plate, and the display panel has display
Region and the non-display area being connect with the display area, the light source assembly are set to described in the correspondence of the backlight module
The position of display area, at least one diffusion barrier are used to the light that the light source assembly emits being diffused into the light guide plate
The first face the correspondence display area position.
26. display device according to claim 25, which is characterized in that the display panel includes stacking gradually connection
Lower polarizing layer, film crystal array layer, liquid crystal layer, filter layer and upper polarizing layer, the lower polarizing layer is close to the light guide plate
The first face.
27. a kind of electronic equipment, which is characterized in that the electronic equipment includes showing such as 26 any one of them of claim 25 ￣
Showing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109074.7A CN108205170B (en) | 2018-02-01 | 2018-02-01 | Backlight module, display device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109074.7A CN108205170B (en) | 2018-02-01 | 2018-02-01 | Backlight module, display device and electronic equipment |
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| CN108205170A true CN108205170A (en) | 2018-06-26 |
| CN108205170B CN108205170B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810109074.7A Active CN108205170B (en) | 2018-02-01 | 2018-02-01 | Backlight module, display device and electronic equipment |
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|---|---|
| CN108205170B (en) | 2023-10-20 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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