CN109307955A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN109307955A CN109307955A CN201811469399.2A CN201811469399A CN109307955A CN 109307955 A CN109307955 A CN 109307955A CN 201811469399 A CN201811469399 A CN 201811469399A CN 109307955 A CN109307955 A CN 109307955A
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- backlight module
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- reflection groove
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- 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
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
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- 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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a kind of backlight module and display devices, are related to field of display technology, comprising: substrate；Multiple LED, be arranged in substrate towards backlight module light-emitting surface side；At least one reflection groove, it is arranged between two adjacent LED, reflection groove includes substrate and at least two extensions that are connected with the end of substrate, and extension is adjacent with LED respectively, extension plane where substrate orthographic projection between substrate and the LED adjacent with the extension；Wherein, some light that LED is projected projects after the reflex of reflection groove from the light-emitting surface of backlight module.Such scheme, by the way that reflection groove is arranged between two at least adjacent LED, utilize the reflex of the reflection groove, it increases from amount light emitted between two adjacent LED, to be conducive to reduce the luminance difference in region between the region LED and adjacent LED, be conducive to the display effect for improving display device.
Description
Technical field
The present invention relates to field of display technology, more particularly, to a kind of backlight module and display device.
Background technique
Currently, application permeability of the LED as backlight in field of liquid crystal panel display alreadys exceed 90%.Backlight mould
Group framework mainly has side entering type and two kinds of straight-down negative, and side entering-type LED backlight is the side that LED light source is arranged in light guide plate, LED
After the light of sending enters light guide plate, by reflector plate, the reflection of site and scattering by light-output, this have the disadvantage that institute's shapes
At picture contrast it is relatively poor, be not available for local dimming.Direct-light type LED backlight then image is more accurately presented, and
It shows outstanding color and comparison of light and shade effect and is increasingly becoming the main trend in market.
Direct LED backlight mould group generally comprises pcb board, and the LED chip after several encapsulation, LED are equipped on pcb board
The light that chip issues is irradiated on LCD display, to realize the effect illuminated to liquid crystal display device.
In general, can have certain spacing between adjacent LED chip, in LED in direct LED backlight mould group
When backlight shines, because therefore no illuminator will appear partially dark phenomenon in above-mentioned spacing, to will lead to LED backlight and be in
The phenomenon that existing brightness disproportionation, influence the display effect of display device.
Summary of the invention
In view of this, the present invention provides a kind of backlight module and display device, by two at least adjacent LED it
Between reflection groove is set, using the reflex of the reflection groove, increase from light emitted between two adjacent LED
Amount is conducive to improve display device to be conducive to reduce the luminance difference in region between the region LED and adjacent LED
Display effect.
In a first aspect, the application provides a kind of backlight module, comprising:
Substrate；
Multiple LED, be arranged in the substrate towards the backlight module light-emitting surface side；
At least one reflection groove is arranged between two adjacent LED, the reflection groove include substrate and with it is described
At least two connected extensions of the end of substrate, the extension is adjacent with the LED respectively, and the extension is in the lining
The orthographic projection of plane is between the substrate and the LED adjacent with the extension where bottom；
Wherein, some light that the LED is projected going out from the backlight module after the reflex of the reflection groove
Smooth surface projects.
Second aspect, the application provide a kind of display device, including backlight module, which is provided herein
Backlight module.
Compared with prior art, backlight module provided by the invention and display device at least realize following beneficial effect
Fruit:
Backlight module and display device provided herein, including substrate and setting go out light towards backlight module in substrate
Multiple LED in face, in particular, the application introduces at least one reflection groove in backlight module, which is arranged adjacent
Two LED between.Since the light-emitting surface of backlight module, this portion can not be reached from some light that LED is projected in the prior art
Light splitter would generally be wasted, thus the region between adjacent LED is it is possible that the partially dark phenomenon of brightness；And the application exists
After introducing reflection groove, from the light of the injection of LED, fail at least partly light directly projected from the light-emitting surface of backlight module
It can projected from the corresponding light-emitting surface in region between adjacent LED after reflex via reflection groove, so that LED is penetrated
Light out is effectively used, and improves the effective rate of utilization for the light source that LED is issued, while also effectively improving adjacent
The darker problem of brightness between LED, is conducive to the uniformity for the light that backlight module is issued, to be conducive to improve display dress
The display effect set.
Certainly, implementing any of the products of the present invention specific needs while must not reach all the above technical effect.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
It is a kind of a kind of top view of backlight module provided by the embodiment of the present application described in Fig. 1；
Fig. 2 show a kind of AA ' sectional view of backlight module in Fig. 1；
Fig. 3 show a kind of light path schematic diagram of backlight module provided by the embodiment of the present application；
It is a kind of another top view of backlight module provided by the embodiment of the present application described in Fig. 4；
Fig. 5 show a kind of BB ' sectional view of backlight module in Fig. 4；
Another AA ' the sectional view of backlight module in Fig. 1 shown in Fig. 6；
Fig. 7 show a kind of sectional view of reflection groove in backlight module provided by the embodiment of the present application；
Fig. 8 show another sectional view of reflection groove in backlight module provided by the embodiment of the present application；
Fig. 9 show a kind of top view of backlight module provided by the embodiment of the present application；
Another top view LED that Figure 10 show backlight module provided by the embodiment of the present application is in array on substrate
Arrangement
Figure 11 show a kind of structural schematic diagram of display device provided by the embodiment of the present application；
Figure 12 show a kind of CC ' sectional view of display device provided by Figure 11.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
In the prior art, direct LED backlight mould group generally comprises pcb board, after being equipped with several encapsulation on pcb board
LED chip, the light that LED chip issues are irradiated on LCD display, to realize the work illuminated to liquid crystal display device
With.
In general, there can be certain spacing between adjacent LED in direct LED backlight, sent out in LED backlight
Light time, above-mentioned spacing is interior because therefore no illuminator will appear partially dark phenomenon, so that will lead to LED backlight is presented brightness not
Equal phenomenon, the i.e. brightness of LED corresponding position are higher, and the phenomenon that the regional luminance between adjacent LED is lower.When LED does not shine
When, black state is presented in entire LED backlight, when LED chip shines, the only corresponding position of LED chip and its peripheral portion region
It shines or brightness is higher, and black state is still presented in the partial region between adjacent LED chip or brightness is lower, makes LED backlight
Luminance nonuniformity will affect the display effect of display device when the LED backlight is applied to display device.
In view of this, the present invention provides a kind of backlight module and display device, by two at least adjacent LED it
Between reflection groove is set, using the reflex of the reflection groove, increase from light emitted between two adjacent LED
Amount is conducive to improve display device to be conducive to reduce the luminance difference in region between the region LED and adjacent LED
Display effect.
The embodiment of the present application provides a kind of backlight module, comprising:
Substrate；
Multiple LED, be arranged in substrate towards backlight module light-emitting surface side；
At least one reflection groove is arranged between two adjacent LED, and reflection groove includes substrate and the end phase with substrate
Even at least two extensions, extension is adjacent with LED respectively, the orthographic projection of extension plane where substrate be located at substrate with
Between the LED adjacent with the extension；
Wherein, some light that LED is projected projects after the reflex of reflection groove from the light-emitting surface of backlight module.
It is described in detail below in conjunction with the drawings and specific embodiments.
It is a kind of a kind of top view of backlight module provided by the embodiment of the present application described in Fig. 1, Fig. 2 is shown in Fig. 1
A kind of AA ' sectional view of backlight module, referring to Figure 1 and Fig. 2, backlight module 100 provided by the embodiment of the present application include lining
Bottom 10, the multiple LED20 being arranged on substrate 10 and at least one reflection groove 30, the reflection groove 30 are arranged in adjacent LED 20
Between；The reflection groove 30 includes substrate 31 and at least two extensions 32 being connected with the end of substrate 31, and extension 32 is distinguished
Adjacent with LED20, extension 32 is located at substrate 31 and adjacent with the extension 32 in the orthographic projection of 10 place plane of substrate
Between LED20；In particular, some light that LED20 is projected goes out light from backlight module 100 after the reflex of reflection groove 30
It projects in face.Fig. 3 is referred to, Fig. 3 show a kind of light path schematic diagram of backlight module 100 provided by the embodiment of the present application, this
After application introduces reflection groove 30 between at least partly adjacent LED20, from the light of the injection of LED20, fail from backlight
At least partly light that the light-emitting surface of mould group 100 directly projects (such as it is separate by being located at LED20 in the light that projects of LED20
The film layer of the side of the substrate 10 such as reflected light of fluorescent film 80) meeting directive reflection groove 30, this some light is by being somebody's turn to do
It is projected after the reflex of reflection groove 30 from the corresponding light-emitting surface in region between two adjacent LED20, to increase
The amount of the light emitted by the corresponding light-emitting surface in region between two adjacent LEDs 20, thus be conducive to improve adjacent LED 20 it
Between the darker problem of brightness, reduce the possibility that brightness disproportionation phenomenon occurs in backlight module 100, be conducive to promote LED20 backlight
The uniformity for the light that mould group 100 is issued also improves the effective rate of utilization for the light source that LED20 is issued, thus when will be upper
When stating the backlight module 100 in embodiment applied in display device, the display effect for improving display device is also helped.
It should be noted that being provided with circuit structure on substrate 10 provided by the embodiment of the present application, can be mentioned for LED20
Power supply source, such as the circuit structure can be FPC substrate or PCB substrate etc.；Backlight module 100 mentioned in the application goes out
Smooth surface is to be located at a substrate 10 parallel face of the LED20 far from one side of substrate.Optionally, mentioned by the embodiment of the present application
LED20 is rectangular parallelepiped structure or cube structure, or is similar rectangular parallelepiped structure or similar cube structure, and the application is to this
Without specifically limiting.In addition, Fig. 1 and Fig. 2 have been only shown schematically a kind of arrangement situation of the LED20 on substrate 10, and
Actual quantity and size are not represented.
In Fig. 1 and embodiment illustrated in fig. 2, reflection groove is only provided between the LED20 of 100 middle part split-phase neighbour of backlight module
30, in addition to such implementation, optionally, refer to Fig. 4 and Fig. 5, in backlight module 100 provided by the embodiment of the present application,
It is provided with reflection groove 30 between two LED20 of arbitrary neighborhood, is wherein one kind provided by the embodiment of the present application described in Fig. 4
Another top view of backlight module 100, Fig. 5 show a kind of BB ' sectional view of backlight module 100 in Fig. 4.
Specifically, Fig. 4 and Fig. 5 are referred to, which is provided with reflection groove between any two adjacent LEDs 20
30, these reflection grooves 30 carry out the light for failing to project from 100 light-emitting surface of backlight module originally in light that LED20 is projected anti-
It penetrates, at least partly light in this some light light-emitting surface corresponding to the region between two adjacent LEDs 20 is enable to project,
So effectively improving the amount light that the light-emitting surface corresponding to the region between any two adjacent LED 20 projects, be conducive to subtract
Luminance difference between two LED20 of small arbitrary neighborhood between region and the corresponding region LED20, improves backlight mould on the whole
The brightness homogeneity of group 100, thus when the backlight module 100 in the embodiment to be applied in display device, advantageously
In the display effect for promoting display device.
Optionally, continuing with referring to Fig. 3, backlight module 100 provided by the embodiment of the present application further includes fluorescent film 80, glimmering
Light film 80 is located at side of the LED20 far from substrate 10.
Specifically, refer to Fig. 3, in backlight module 100 introduce fluorescent film 80 when, the fluorescent film 80 of different colours with not
LED20 lamp cooperation with color makes the light-emitting surface of backlight module 100 project white light.Such as 20 lamp of blue-ray LED and doping can be used
There is 80 collective effect of fluorescent film of yellow fluorescent powder, backlight module 100 is made to project white light；Certainly, in some other of the application
In embodiment, the fluorescent film 80 of LED20 lamp and other colors that other colors also can be used makes backlight module 100 project white light,
The application is to this without specifically limiting.In the light that LED20 is projected, most of light, which passes through after 80s project of fluorescent film, (schemes
In be not shown), some light will be reflexed in reflection groove 30 by fluorescent film 80, this some light is sent out in reflection groove 30
After raw reflection, across fluorescent film injection after 80s to the corresponding light-emitting surface in region adjacent LED 20, do not exist compared to the prior art
The structure of reflection groove 30 is set between adjacent LED 20, increases the light projected from the corresponding light-emitting surface in region between adjacent LED 20
The amount of line, to be conducive to reduce the luminance difference between adjacent LED 20 between region and the corresponding region LED20, and then advantageous
It is applied in display device in the brightness homogeneity for promoting backlight module 100, thus when by the backlight module 100 in the embodiment
When, be conducive to the display effect for promoting display device.Certainly, in backlight module 100 provided by the embodiment of the present application, in fluorescence
Film 80 is additionally provided with some other film layers, such as light guide plate, diffusion sheet, brightening piece etc., reflection groove 30 far from the side of substrate 10
The light received is other than to have part be the light reflected by fluorescent film 80, it is also possible to be after LED injection by leading
The light of the film layers such as tabula rasa, diffusion sheet, brightening piece reflection, the application is to this without specifically limiting.
Optionally, in the reflection groove 30 in backlight module 100 provided by the embodiment of the present application, extension 32 and substrate 31
Between angle be θ, θ >=90 °.
Specifically, be in embodiment illustrated in fig. 2, between the extension 32 and substrate 31 of reflection groove 30 it is orthogonal,
That is when angle theta=90 ° between extension 32 and substrate 31, extension 32 and substrate 31 are using such positional relationship,
In the light that LED20 is issued, the light reflected via fluorescent film 80 will be easier into the reflection groove 30 of such structure, therefore be had
It is reflected onto the possibility in region between adjacent LED 20 conducive to the light for entering reflection groove 30 is increased, to be conducive to be promoted adjacent
The brightness in region between LED20.Another AA ' the sectional view of backlight module 100 in Fig. 1 shown in Fig. 6, the reflection in the embodiment
In slot 30, the angle between extension 32 and substrate 31 is obtuse angle, so that the opening of reflection groove 30 becomes larger, the reflection of such structure
Slot 30 can receive the more reflected light of other film layers through fluorescent film 80 or positioned at LED20 far from one side of substrate,
It is more advantageous to the light increased into reflection groove 30 and is reflected onto the possibility in region between adjacent LED 20, to be more conducive to
The brightness in region between adjacent LED 20 is promoted, the brightness between the region and the corresponding region LED20 between adjacent LED 20 is reduced
Difference promotes the brightness homogeneity of backlight module 100.
Optionally, continuing with referring to fig. 2 and Fig. 6, in backlight module 100 provided by the embodiment of the present application, LED20 is separate
Maximum normal distance between one end and substrate 10 of substrate 10 is H1, the one end of extension 32 far from substrate 31 and substrate 10 it
Between maximum normal distance be H2, wherein H2≤H1.
Specifically, after introducing reflection groove 30 in backlight module 100, reflection groove 30 is remote continuing with referring to fig. 2 and Fig. 6
When the height H2 of one end from substrate 10 is designed the height H1 less than or equal to the one end of LED20 far from substrate 10, it not will increase
The thickness of backlight module 100 itself, will not be due to being introduced into for reflection groove 30 and to LED20 in backlight module 100 far from substrate
The structure of 10 sides impacts, thus is conducive to simplify in backlight module 100 backlight module 100 when after introducing reflection groove 30
Production technology.
Optionally, Fig. 6 is referred to, in backlight module 100 provided by the embodiment of the present application, in same reflection slot 30,
Horizontal distance of two ends of the extension 32 far from substrate 31 between the orthographic projection of 10 place plane of substrate be D1, adjacent two
The width of spacing between a LED20 is D2, wherein D1≤D2.
It should be noted that assume that two adjacent LEDs 20 are the first LED21 and the 2nd LED22 respectively, it is two neighboring
The width D 2 of spacing between LED20 refers to the first LED21 close to the side of the 2nd LED22 and the 2nd LED22 close to first
The distance between side of LED21.The width D 1 of reflection groove 30 is designed to be less than or equal between two adjacent LEDs 20 by the application
Spacing width when, can by reflection groove 30 smoothly merging two adjacent LEDs 20 between region in, to be conducive to simplify
The production technology of backlight module 100 promotes the production efficiency of backlight module 100.
Optionally, Fig. 7 show a kind of section of reflection groove 30 in backlight module 100 provided by the embodiment of the present application
Figure, refers to Fig. 7, and in backlight module 100 provided by the embodiment of the present application, reflection groove 30 further includes that substrate 33 and setting exist
Reflectorized material 34 on substrate 33, reflectorized material 34 be located at least in substrate 33 towards backlight module 100 light-emitting surface side.It can
Selection of land, above-mentioned reflectorized material 34 include silver or aluminium.
Specifically, a kind of structure that Fig. 7 shows reflection groove 30 in backlight module 100 provided by the embodiment of the present application is shown
It is intended to, the reflection groove 30 is by being deposited or coating reflectorized material 34 in side of the substrate 33 towards the light-emitting surface of backlight module 100
Mode formed, wherein reflectorized material 34 can be taken as the material with high reflectivity such as Ag or Al, 33 surface of substrate formed Ag
The thickness of film or Al film, Ag film or Al film is bigger, and reflecting effect is more obvious, when the thickness of Ag film or Al film reaches 100nm its
Reflectivity can reach 90% or more, therefore, form reflection groove 30, energy by way of forming Ag film or Al film on substrate 33
The amount that the light of the corresponding light-emitting surface in region between adjacent LED 20 is reflexed to by reflection groove 30 is enough effectively increased, advantageously
The luminance difference in region and the corresponding region LED20 between reduction adjacent LED 20, thus be more advantageous to and promote backlight module 100
Brightness homogeneity and display device display effect.Certainly, it is combined when reflection groove 30 using substrate 33 and luminescent material 34
When form, luminescent material 34 except using in addition to Ag or Al, also can be used the higher material of other reflection efficiencies, the application to this not into
Row is specific to be limited.
Optionally, Fig. 8 show another section of reflection groove 30 in backlight module 100 provided by the embodiment of the present application
Scheme, in the embodiment, reflection groove 30 uses multilayer polester film composite construction, such as can be using PET (Polyethylene
Terephthalate) be resin be raw material made of multi-layer film structure, such as ESR (Enhanced Specular Reflector)
Structure.The reflection groove 30 formed using multilayer polester film composite construction has very high reflection in visible wavelength range
Rate can effectively reflect the light injected in reflection groove 30, be equally beneficial for increase by reflection groove 30 and reflex to phase
The amount of the light of the corresponding light-emitting surface in region between adjacent LED20, and then be conducive to reduce region and LED20 between adjacent LED 20
The luminance difference of corresponding region, thus it is more advantageous to the display effect of the brightness homogeneity and display device that promote backlight module 100
Fruit.
Optionally, Fig. 9 show a kind of top view of backlight module 100 provided by the embodiment of the present application, shown in Figure 10
For another top view of backlight module 100 provided by the embodiment of the present application, LED20 is arranged in array on substrate 10, asks
Referring to Fig. 9, arbitrary neighborhood two arrange include between LED20 a strip reflection groove 36, alternatively, referring to Figure 10, arbitrary neighborhood
It include the reflection groove 38 of a strip between two row LED20.
Specifically, when LED20 is arranged in array on substrate 10, the spacing between two row LED20 of arbitrary neighborhood is phase
It mutually penetrates through, it is also to be mutually communicated that arbitrary neighborhood two, which arranges the spacing between LED20, at this point, LED20 can be arranged arbitrary neighborhood two
Between the reflection groove 36 of same strip is set, such as refer to Fig. 9, small size be respectively set between adjacent rows LED20
Reflection groove 37, in this way, reduce the quantity of reflection groove in backlight module 100, to be conducive to simplify the life of backlight module 100
Produce process.Certainly, mode shown in Fig. 10 also can be used, the reflection of a strip is set between any adjacent rows LED20
Slot 38, while the reflection groove 39 that small size is respectively set between LED20 is arranged in arbitrary neighborhood two, it can equally reduce backlight module
The quantity of reflection groove 30 in 100 promotes the production efficiency of backlight module 100.
Optionally, in backlight module 100 provided by the embodiment of the present application, same reflection slot 30 is integrally formed；Alternatively, institute
There is at least partly reflection groove 30 in reflection groove 30 to be integrally formed.
Specifically, Fig. 7-Figure 10 is referred to, from the reflection groove 30 in backlight module 100 provided by the embodiment of the present application
From the point of view of structure, each reflection groove 30 includes substrate 31 and at least two extensions 32, is integrally formed when by same reflection slot 30,
When namely substrate 31 and extension 32 being integrally formed, without be fabricated separately substrate 31 and extension 32 again by substrate 31 with prolong
Extending portion 32 connects, thus the integrally formed mode is conducive to simplify the production procedure of backlight module 100, promotes backlight module
100 production efficiency.In addition, at least partly reflection groove 30 in all reflection grooves 30 is integrally formed, integrally formed reflection
Slot 30 prepares formation in same processing procedure, avoids the program that single reflection groove 30 is fabricated separately, to be more conducive to saving
The production process of backlight module 100 promotes the production efficiency of backlight module 100.
Optionally, in backlight module 100 provided by the embodiment of the present application, LED20 is Mini LED or Micro LED.
When selecting Mini LED as the light source of backlight module 100 in the embodiment of the present application, Mini LED can array arrangement in substrate
On 10, backlight module 100 is made to become direct-light-type backlight.Mini LED also known as secondary millimeter light emitting diode, it is intended that crystallite dimension
LED about between 100 microns to 1000 microns.When forming LED provided by the embodiment of the present application using Mini LED, yield
Height, has abnormity cutting characteristic, and collocation flexible base plate can also form the backlight form of high curved surface, possess better color rendering, answer
Finer HDR (High Dynamic Range, high dynamic range figure can be provided when using in display panel for display panel
Picture) subregion.Light source of the Mini LED as backlight module 100 in the embodiment of the present application also may be selected in the application, and Micro LED is
LED of the crystallite dimension about between 1-10 microns can be realized the display screen of 0.05 millimeter or smaller szie pixel particle,
The power consumption of Micro LED is very low, and has preferable stability of material and askiatic residual.
Based on the same inventive concept, the application also provides a kind of display device 300, and Figure 11 show the embodiment of the present application institute
A kind of structural schematic diagram of the display device 300 of offer, Figure 12 show a kind of CC ' of display device 300 provided by Figure 11
Sectional view, referring to Figure 11 and Figure 12, which includes display panel 500 and backlight module 100, which is
Backlight module 100 provided by any of the above-described embodiment of the application, display panel 500 can be liquid crystal display panel.It needs
Bright, display device 300 provided by the embodiment of the present application can be with are as follows: mobile phone, tablet computer, television set, display, notes
Any products or components with real function such as this computer, Digital Frame, navigator.
Through the foregoing embodiment it is found that display panel provided by the invention and display device, at least realizing following has
Beneficial effect:
Backlight module and display device provided herein, including substrate and setting go out light towards backlight module in substrate
Multiple LED in face, in particular, the application introduces at least one reflection groove in backlight module, which is arranged adjacent
Two LED between.Since the light-emitting surface of backlight module, this portion can not be reached from some light that LED is projected in the prior art
Light splitter would generally be wasted, thus the region between adjacent LED is it is possible that the partially dark phenomenon of brightness；And the application exists
After introducing reflection groove, from the light of the injection of LED, fail at least partly light directly projected from the light-emitting surface of backlight module
It can projected from the corresponding light-emitting surface in region between adjacent LED after reflex via reflection groove, so that LED is penetrated
Light out is effectively used, and improves the effective rate of utilization for the light source that LED is issued, while also effectively improving adjacent
The darker problem of brightness between LED, is conducive to the uniformity for the light that backlight module is issued, to be conducive to improve display dress
The display effect set.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (13)
1. a kind of backlight module characterized by comprising
Substrate；
Multiple LED, be arranged in the substrate towards the backlight module light-emitting surface side；
At least one reflection groove is arranged between two adjacent LED, the reflection groove include substrate and with the substrate
Connected at least two extensions in end, the extension is adjacent with the LED respectively, and the extension is in the substrate institute
Plane orthographic projection between the substrate and the LED adjacent with the extension；
Wherein, some light that the LED is projected is after the reflex of the reflection groove from the light-emitting surface of the backlight module
It projects.
2. backlight module according to claim 1, which is characterized in that be respectively provided between two LED of arbitrary neighborhood
There is the reflection groove.
3. backlight module according to claim 1, which is characterized in that further include fluorescent film, the fluorescent film is located at described
Side of the LED far from the substrate.
4. backlight module according to claim 1, which is characterized in that the angle between the extension and the substrate is
θ, θ >=90 °.
5. backlight module according to claim 1, which is characterized in that the one end of the LED far from the substrate with it is described
Maximum normal distance between substrate is H1, and the maximum between the extension one end and the substrate far from the substrate is hung down
Straight distance is H2, wherein H2≤H1.
6. backlight module according to claim 1, which is characterized in that in the same reflection groove, two extensions
End far from the substrate is D1 in the horizontal distance where the substrate between the orthographic projection of plane, two neighboring described
The width of spacing between LED is D2, wherein D1≤D2.
7. backlight module according to claim 1, which is characterized in that the reflection groove further includes substrate and is arranged in institute
State the reflectorized material on substrate, the reflectorized material be located at least in the substrate towards the backlight module light-emitting surface one
Side.
8. backlight module according to claim 6, which is characterized in that the reflectorized material includes silver or aluminium.
9. backlight module according to claim 1, which is characterized in that the reflection groove uses multilayer polester film composite junction
Structure.
10. backlight module according to claim 1, which is characterized in that the LED is arranged in array over the substrate,
Arbitrary neighborhood two arranges the reflection groove between the LED including a strip, alternatively, between LED described in two row of arbitrary neighborhood
The reflection groove including a strip.
11. backlight module according to claim 1, which is characterized in that the same reflection groove is integrally formed；Alternatively, institute
There is at least partly described reflection groove in the reflection groove to be integrally formed.
12. backlight module according to claim 1, which is characterized in that the LED is Mini LED or Micro LED.
13. a kind of display device, which is characterized in that any backlight module including claim 1 to 12.
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| CN109307955B (en) | 2021-09-07 |
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