CN110456574A - A kind of display device and backlight module - Google Patents
A kind of display device and backlight module Download PDFInfo
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- CN110456574A CN110456574A CN201910891020.5A CN201910891020A CN110456574A CN 110456574 A CN110456574 A CN 110456574A CN 201910891020 A CN201910891020 A CN 201910891020A CN 110456574 A CN110456574 A CN 110456574A
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- transparent substrate
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- circuit board
- led
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Classifications
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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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
-
- 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
- G02F1/133612—Electrical details
Abstract
The present invention provides a kind of display device and backlight module; including circuit board; it is set to multiple micro-led on circuit board; cover multiple micro-led and circuit board protection glue-line; it is set to protection glue-line and deviates from the transparent substrate of circuit board side, and be set to the diffuser plate that transparent substrate deviates from the circuit board side；Wherein, the thickness of transparent substrate meets micro-led light mixing distance.By making the fully light mixing before reaching diffuser plate of the light of micro-led sending using transparent substrate as the support construction between protection glue-line and diffuser plate, backlighting effect is promoted.
Description
Technical field
The present invention relates to field of liquid crystal display more particularly to a kind of display device and backlight modules.
Background technique
High dynamic range display technology (High-Dynamic Range, abbreviation HDR) can provide more dynamics and show
And image detail, it can preferably reflect the visual effect that object is had by oneself in true environment, and be generally considered to cause
Change next time in display field.Meanwhile HDR technology also puts forward higher requirements liquid crystal display terminal --- it is finer
Zonal control and contrast.
The size of micro-led (mini LED) is about 50 μm -300 μm.Using flood tide mini LED grain conduct
Backlight is applied to field of liquid crystal display, and the thin type of backlight module not only may be implemented, moreover it is possible to realize that is more refined moves
State control, promotes the dynamic contrast of liquid crystal display.
In traditional down straight aphototropism mode set, diffusion plate support is placed usually between lamp plate and diffuser plate and completes to mix
Light.But the LED spacing very little of mini LED lamp panel, generally less than 5mm, the spacing are not enough to place diffusion plate support, therefore often
Rule way is difficult to realize.
Summary of the invention
The present invention provides a kind of display device and backlight module, for optimizing light mixing effect.
The embodiment of the present invention in a first aspect, providing a kind of display device, comprising: backlight module and be located at the back
The display panel of optical mode group light emission side；
The backlight module includes: circuit board, is set to multiple micro-led on the circuit board, covering institute
The protection glue-line for stating the multiple micro-led and described circuit board is set to the protection glue-line away from the circuit board one
The transparent substrate of side, and it is set to the diffuser plate that the transparent substrate deviates from the circuit board side；
Wherein, the thickness of the transparent substrate meets the micro-led light mixing distance.
In one possible implementation, in above-mentioned display device provided by the invention, the transparent substrate towards
The surface of the protection glue-line side is out-of-flatness surface.
In one possible implementation, in above-mentioned display device provided by the invention, the out-of-flatness surface tool
There are multiple bar shaped bumps ribs disposed in parallel.
In one possible implementation, in above-mentioned display device provided by the invention, the transparent substrate towards
The surface of the protection glue-line side is coated with scattering coating, and the scattering coating includes colloid layer and is distributed in dissipating for colloid layer
Penetrate particle.
In one possible implementation, in above-mentioned display device provided by the invention, in the transparent substrate and
It further include fitting glue-line, nothing between the fitting glue-line and the transparent substrate and the protection glue-line between the protection glue-line
Gap fitting.
In one possible implementation, in above-mentioned display device provided by the invention, the backlight module is also wrapped
It includes and is set to the optical diaphragm group that the diffusion sheet deviates from the transparent substrate side.
In one possible implementation, in above-mentioned display device provided by the invention, the miniature light-emitting diodes
The size of pipe is 50 μm -300 μm.
In one possible implementation, in above-mentioned display device provided by the invention, the material of the protection glue-line
Material is silica gel or epoxy resin.
In one possible implementation, in above-mentioned display device provided by the invention, the material of the transparent substrate
Material is polymethyl methacrylate or polycarbonate.
The embodiment of the present invention in a first aspect, providing a kind of backlight module.Including circuit board, it is set to the circuit board
On it is multiple micro-led, cover the protection glue-line of the multiple micro-led and described circuit board, be arranged
Deviate from the transparent substrate of the circuit board side in the protection glue-line, and is set to the transparent substrate away from the circuit
The diffuser plate of plate side；
Wherein, the thickness of the transparent substrate meets the micro-led light mixing distance.
The present invention has the beneficial effect that:
Display device provided by the invention and backlight module, including circuit board are set to multiple micro- on the circuit board
Type light emitting diode covers the protection glue-line of the multiple micro-led and described circuit board, is set to the protection
Glue-line deviates from the transparent substrate of the circuit board side, and is set to the expansion that the transparent substrate deviates from the circuit board side
It falls apart；Wherein, the thickness of the transparent substrate meets the micro-led light mixing distance.Transparent substrate is as protection
Support construction between glue-line and diffuser plate makes the fully light mixing before reaching diffuser plate of the light of micro-led sending,
Optimize light mixing effect.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of display device provided in an embodiment of the present invention；
Fig. 2 is the light path principle figure of transparent substrate provided in an embodiment of the present invention；
Fig. 3 is the second structural representation of display device provided in an embodiment of the present invention；
Fig. 4 is the third structural representation of display device provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of transparent substrate provided in an embodiment of the present invention；
Fig. 6 is the four of the structural schematic diagram of display device provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of scattering coating provided in an embodiment of the present invention；
The five of the structural schematic diagram of Fig. 8 display device provided in an embodiment of the present invention；
The six of the structural schematic diagram of Fig. 9 display device provided in an embodiment of the present invention；
The seven of the structural schematic diagram of Figure 10 display device provided in an embodiment of the present invention；
Figure 11 is the structural schematic diagram of backlight module provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
The embodiment of the present invention in a first aspect, a kind of display device is provided, as shown in Figure 1, the display device includes backlight
Mould group 10 and display panel 20 positioned at 10 light emission side of backlight module.
Display panel 20, positioned at the light emission side of backlight module 10.It has multiple pixel units being arranged in array, each picture
The light penetration and color that plain unit independent can control backlight module 10 and be incident on the pixel unit, so that whole pictures
The light that plain unit penetrates constitutes image to be shown.
Backlight module 10 can uniformly emit beam in entire light-emitting surface, for providing brightness for display panel 20
Light that is sufficient and being evenly distributed, so that display panel 20 can normally show image.
Specifically, backlight module 10 includes: circuit board 101, it is set to multiple micro-led on circuit board 101
102, the protection glue-line 103 of covering multiple micro-led 102 and circuit board 101 is set to protection glue-line 103 away from electricity
The transparent substrate 104 of 101 side of road plate, and it is set to the diffuser plate 105 that transparent substrate 104 deviates from 101 side of circuit board.
Wherein, circuit board 101 is used to provide driving electric signal to be micro-led.It is provided on circuit board 101
Leg and circuit-line, micro-led 102 electrode are welded on the leg of circuit board 101 by welding procedure, electricity
Route road for make to be electrically connected to each other between micro-led 102 and micro-led 102 with external electricity
The electrical connection of source driving plate (not shown).
In some embodiments of the invention, circuit board 101 is printed circuit board (Printed Circuit Board, abbreviation
PCB), PCB includes electronic circuit and insulating layer, and insulating layer is naked by the leg for welding micro-led 102 in electronic circuit
It exposes outside and covers rest part.
In certain embodiments of the present invention, circuit board 101 is that film crystal tube drive circuit shape is arranged in underlay substrate
At array substrate, the surface of array substrate has a connection electrode for being connected to film crystal tube drive circuit, each miniature to shine
The electrode of diode 102 and each connection electrode, which correspond, welds.
The substrate or underlay substrate of the above circuit board 101 can use flexible material to make to form Flexible Displays dress
It sets.
In embodiments of the present invention, circuit board 101 is plate, is integrally rectangle or square.The length of circuit board 101
In 200-800mm, width is in 100-500mm.Size according to display device, in embodiments of the present invention, display device can be with
Including multiple circuit boards 101, lamp panel structure is collectively formed by connecting method between circuit board 101.In order to avoid circuit board 101
Splice bring optical problem, the piece between adjacent circuit plate 101 is accomplished smaller as far as possible, or even realizes seamless spliced.
Multiple micro-led 102, for emitting source light.It is micro-led to be fixed by welding manner
It embarks on journey or arranges in column in a side surface of circuit board 101, multiple micro-led 102, two neighboring miniature luminous two
The distance between pipe 102 is less than 5mm.
Micro-led size in the embodiment of the present invention is about between 50 μm -300 μm.It is micro-led
101 are different from common light emitting diode, refer specifically to micro-led chip.The small luminescence chip of size is advantageous
It controls in by dynamic light-emitting to smaller subregion, further increases the contrast of picture.In embodiments of the present invention, miniature to shine
Diode 102 is monochromatic micro-led.
The effect for protecting glue-line 103 is packaged to micro-led 102, to effectively prevent miniature hair
The generation of the rough sledding such as the falling off of optical diode, humidity.Protecting 103 material therefor of glue-line includes silica gel or epoxy resin.
Other light transmission rates material close with the two can be used.Protection glue-line 103 is formed using the formation of spraying.
In order to preferably protect micro-led 102, protect the upper surface of glue-line 103 apart from micro-led
The distance of 102 upper surface is at 100-300 μm.
Transparent substrate 104 can be such that the light from micro-led 102 penetrates and be used to support diffuser plate 105.
The material of transparent substrate 104 can be selected from least one of polymethyl methacrylate or polycarbonate.But this is also not necessarily limited to,
Other high reflectances, the material production of low absorptance can also be used in transparent substrate 104.This is because light is in transparent substrate 104
Multiple reflection occurs for inside, and using high reflectance, the material of low absorptance can reduce light in transparent substrate as far as possible
Decaying when propagating in 104 reduces power consumption to improve the light utilization efficiency of backlight module.Transparent substrate 104 is used as diffuser plate
105 support construction makes the micro-led 102 light fully light mixings before reaching diffuser plate issued.
In embodiments of the present invention, the thickness of transparent substrate 104 meets micro-led 102 light mixing distance, from
And allow the abundant light mixing when reaching diffuser plate 105 of micro-led emergent ray, guarantee backlight effect.In this hair
In bright embodiment, the thickness of transparent substrate 104 is not more than 10mm.
Diffuser plate 105 constantly occurs refraction and reflection when passing through diffuser plate by light, breaks up light to reach
Effect, and then realize the effect of even light.Material used in diffuser plate is selected generally from polymetylmethacrylate, polycarbonate
At least one of PC, polystyrene based material PS, polypropylene PP.
And backlight module 10 is not provided with being used to support the expansion of diffuser plate 105 between circuit board 101 and diffuser plate 105
Fall apart support frame.
Micro-led 102 are used as point light source, its outgoing light type is in a taper, and the light intensity at edge is less than center
Light intensity, it is therefore desirable to make the fringe region light light mixing that adjacent two are micro-led, so that the light intensity in light mixing region
Reduce with the gap of the light intensity of central area.Spacing very little between current micro-led 102, is not enough to place diffusion
Board mount completes light mixing, therefore the embodiment of the present invention utilizes 104 supporting diffusion plate 105 of transparent substrate, shines two so that miniature
Pull open set distance between pole pipe 102 and diffuser plate 105, the thickness of transparent substrate 104 meet micro-led 102 it is mixed
Electrical distance, thus allow the abundant light mixing when reaching diffuser plate 105 of micro-led emergent ray, optimization backlight effect
Fruit.
In practical applications, the protection glue-line 103 of covering micro-led 102 has encapsulation micro-led
102 effect.In the specific implementation, it both can encapsulate micro-led using mode for dispensing glue, flood can also be used
The mode of coating encapsulates micro-led.And the packaged type of flood coating has higher production efficiency and effect is excellent
It is different.Since the mode that protection glue-line 103 generallys use spraying is formed on micro-led, surface is simultaneously uneven
Whole, regional area is easy to form raised or sunken.If glue-line 103 is protected to there is protrusion towards the surface of transparent substrate side,
These convex portions are contacted with transparent substrate 104, and protection glue-line 103 and transparent substrate 104 is in the adjacent area of above-mentioned convex portion
Domain forms air layer.With reference to light path principle figure shown in Fig. 2, since the refractive index of air is less than the refractive index of protection glue-line, thoroughly
Some light in bright substrate 104 can be totally reflected when being incident on the interface with air layer, and in same incident angle
Light be incident on protection glue-line interface when, since total reflection condition changes, critical angle increase, can send out originally
The light of raw total reflection can face out outgoing from the boundary, then transparent substrate will be emitted more light at convex portion
Line causes bright wisp.
To solve the above-mentioned problems, as shown in figure 3, the embodiment of the present invention by transparent substrate 104 towards protection glue-line 103 1
The surface of side is surface-treated, and the surface is made to become an out-of-flatness surface, it is possible thereby to make transparent substrate 104 and protection glue-line
Homogeneous dielectric layer is formed between 103.Herein uniform, refers to for the cross direction profiles of dielectric layer, air dielectric layer or guarantor
The distribution of shield glue-line is uniform, is not in that certain block region large stretch of air dielectric layer or protection glue-line occurs.Therefore, light
Line is also uniformly, to guarantee the uniformity of emergent light, to avoid the generation of bright wisp in the reflection case of the interface.The present invention
Rigid requirement is not made to the design parameter on above-mentioned out-of-flatness surface, it is any to make between transparent substrate 104 and protection glue-line 103
Form the out-of-flatness surface of homogeneous dielectric layer all within protection scope of the present invention.
In a kind of possible embodiment, as shown in figure 4, in display device provided in an embodiment of the present invention, it is transparent
Substrate 104 has multiple bar shaped bumps ribs disposed in parallel close to the surface of the side of protection glue-line 103.The transparent substrate 104
Stereochemical structure it is as shown in Figure 5.By be suitably arranged bar shaped bumps rib protrusion height and the concave-convex rib inclined-plane that is included with
Transparent substrate 104 away from the bar shaped bumps rib flat surface angle, can make the bar shaped bumps rib and protection glue-line 103 it
Between, uniform dielectric layer is formed, guarantees that backlight is uniformly emitted from transparent substrate 104 away from the surface of protection 103 side of glue-line,
The generation for avoiding bright wisp improves the uniformity of display brightness.
Wherein, the bar shaped bumps rib structure on 104 surface of transparent substrate can use etching technics and be formed in Fig. 4, transparent
Barrier material is arranged in 104 surface of substrate, forms bar shaped bumps rib structure using etching technics；Alternatively, can also be in transparent substrate
104 surface pastes the diaphragm with bar shaped concaveconvex structure；Or it can once be formed using molding die concave-convex with bar shaped
The transparent substrate of rib structure.The height of bar shaped bumps rib is about 20 μm -50 μm, and apex angle is less than or equal to 90 °.This structure it is saturating
Bright substrate 104 can be enough to form uniform dielectric layer between protection glue-line 103.
In alternatively possible embodiment, as shown in fig. 6, the embodiment of the present invention is in transparent substrate 104 close to protection
The surface coating scattering coating 106 of glue side.Scattering coating 106 is uniformly coated on the surface of transparent substrate 104, coating thickness
About 50 μm -200 μm.It scatters and is filled with some small solid particles in coating 106, light is incident on hair when on these particles
Raw scattering, scattering light are uniformly emitted from transparent substrate 104.Scattering coating 106 can use sputtering, vapor deposition or other existing skills
Technique in art is formed.
Referring to FIG. 7, for the structural schematic diagram of scattering coating provided in an embodiment of the present invention.As shown in fig. 7, scattering coating
106 include colloid layer 1061 and scattering particles 1062.Wherein, colloid layer 1061 is used as dispersing agent, keeps scattering particles 1062 uniform
Be dispersed therein.Scattering particles 1062 are some small particles, such as titanium dioxide and/or silica dioxide granule, light
After being incident on scattering particles 1062, it can be propagated to all directions.Specifically, the material of colloid layer can be transparent resin, it
Thickness on the basis of guaranteeing to fill enough scattering particles as far as possible accomplish it is smaller, to reduce scattering coating 106 to entering
Penetrate the decaying of light ray energy.When transparent resin is liquid or colloidal state, molecule has mobility, therefore can make scattering particles
It is uniformly dispersed in wherein.After scattering coating 106 is applied on transparent substrate 104, by heating or illumination, transparent tree can be made
Rouge is cured.When light enters scattering coating 106 from transparent substrate 104, all may be used in each region of scattering coating 106
Uniform scattering occurs, so that the influence of the convex portion of glue-line 103 will not be protected.It ensure that light can be from transparent base
Plate 104 is uniformly emitted away from the side of protection glue-line 103, is avoided the generation of bright wisp, is improved the uniformity of display brightness.
In alternatively possible embodiment, as shown in figure 8, the embodiment of the present invention is in transparent substrate 104 and protective glue
It is pasted to tight between setting fitting glue-line 107, the fitting glue-line and transparent substrate 104 and protection glue-line 103 between layer 103
It closes.It is bonded glue-line 107 by setting, makes to only exist between transparent substrate 104 and protection glue-line 103 and be bonded glue-line 107 this is equal
Even medium, therefore total reflection condition when light is propagated in transparent substrate in position is all the same, is not in bright wisp
Thus problem improves the uniformity of display brightness.
Fitting glue-line 107 can use uv-curable glue.The uv-curable glue has good light-transmission type, under normal conditions
In colloidal.After filling the uv-curable glue between transparent substrate 104 and protection glue-line 103, using ultraviolet light from transparent base
Plate 104 can be such that colloid solidifies, to make 104 He of transparent substrate away from protecting one layer of glue-line 103 to irradiate to it 5-10 minutes
It is closely bonded between protection glue-line 103.
In practical applications, as shown in figure 9, backlight module 10 further includes being set to diffusion sheet 105 away from transparent substrate 104
The optical diaphragm group 108 of side.
Wherein, optical diaphragm group 108 may include one in prismatic lens, quantum dot film, diffusion sheet, reflecting polarized wafer etc.
Kind is a variety of, and the purpose of these diaphragms is added in backlight module 10, is diversified in order to adapt to backlight module 10
Practical application.For example, prismatic lens can change the shooting angle of light, so that change display device may be viewed by angle.Quantum
Point film can provide monochromaticjty higher quantum dot light emitting, be applied to quantum dot TV, improve the display colour gamut of TV.
Illustratively, referring to FIG. 10, being a kind of structural schematic diagram of display device provided in an embodiment of the present invention.This is aobvious
Showing device also deviates from transparent substrate 104 in the diffuser plate of backlight module 105 in addition to the structure with display device shown in FIG. 1
Side quantum dot film 108 ' is set, in quantum dot film 108 ' away from the setting prismatic lens and the optics such as composite membrane of diffuser plate 105
Diaphragm 108.As shown in Figure 10, micro-led 102 for blue light it is micro-led, blue light it is micro-led
It after transparent substrate and diffuser plate, forms uniform area source and is radiated on quantum dot film 108 ', to excite quantum dot film
108 ' shine.It include red quantum dot material and green quanta point material in quantum dot film 108 ', red quantum dot material is in indigo plant
Go out feux rouges under the excitation of light, green quanta point material issues green light under the excitation of blue light.Due to the luminous effect of quanta point material
Rate is limited, so blue light will not be completely absorbed, by the way that the ratio of two amounts point particle in quantum dot film 108 ' is rationally arranged,
Remaining blue light and feux rouges and green light can be just set to be mixed into white light.Alternatively, other schemes of colour also can be used, such as miniature
Diode 102 issues blue light, and excitation quantum dot film issues yellow light, and blue light and yellow light can equally be mixed into white light.
The second aspect of the embodiment of the present invention provides a kind of backlight module.It please refers to shown in Figure 11, implements for the present invention
The structural schematic diagram for the backlight module that example provides.As shown in figure 11, backlight module 10 includes circuit board 101, is set to circuit board
Multiple micro-led 102 on 101, the protection glue-line of covering multiple micro-led 102 and circuit board 101
103, it is set to protection glue-line 103 and deviates from the transparent substrate 104 of 101 side of circuit board, and be set to transparent substrate 104 and deviate from
The diffuser plate 105 of 101 side of circuit board.Specifically, this backlight module can be any possible implementation in above content
In backlight module, it includes various components have and the backlight module in possible implementation any in above content
The identical structure and function of each corresponding component.In order to illustrate the succinct of book, details are not described herein again.In the backlight module, using saturating
Support construction of the bright substrate 104 as diffuser plate 105, and transparent substrate 104 is close to the surface contact for protecting 103 side of glue-line
Medium is uniform medium, and reflection case of the light on the surface is uniform, therefore is also from the light that transparent substrate 104 is emitted
Uniformly.To make backlight module be capable of providing uniform back lighting.
In conclusion including circuit board 101, being set in display device provided by the invention and backlight module
Multiple micro-led 102 on circuit board 101, the protection of covering multiple micro-led 102 and circuit board 101
Glue-line 103 is set to protection glue-line 103 and deviates from the transparent substrate 104 of 101 side of circuit board, and is set to transparent substrate 104
Diffuser plate 105 away from 101 side of circuit board.Wherein transparent substrate 104 is as between protection glue-line 103 and diffuser plate 105
Support construction makes the micro-led 102 light fully light mixings before reaching diffuser plate issued.Transparent substrate 104 passes through
After special designing, make it close to the uniform medium of medium of the surface contact of protection 103 side of glue-line, light is on the surface
Reflection case is uniform, thus from the light that transparent substrate 104 is emitted be also uniform.Finally show display device
The picture of brightness uniformity, or backlight module is allow to provide the back lighting of brightness uniformity.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of display device characterized by comprising backlight module and the display surface positioned at the backlight module light emission side
Plate；
The backlight module includes: circuit board, be set to it is multiple micro-led on the circuit board, cover it is described more
The protection glue-line of a micro-led and described circuit board is set to the protection glue-line away from the circuit board side
Transparent substrate, and it is set to the diffuser plate that the transparent substrate deviates from the circuit board side；
Wherein, the thickness of the transparent substrate meets the micro-led light mixing distance.
2. display device as described in claim 1, which is characterized in that the transparent substrate is towards the protection glue-line side
Surface is out-of-flatness surface.
3. display device as claimed in claim 2, which is characterized in that the out-of-flatness surface has multiple items disposed in parallel
Shape bumps rib.
4. display device as described in claim 1, which is characterized in that the transparent substrate is towards the protection glue-line side
Surface is coated with scattering coating, and the scattering coating includes colloid layer and the scattering particles for being distributed in colloid layer.
5. display device as described in claim 1, which is characterized in that between the transparent substrate and the protection glue-line also
Including being bonded glue-line, tight is bonded between the fitting glue-line and the transparent substrate and the protection glue-line.
6. display device as described in claim 1, which is characterized in that the backlight module further includes being set to the diffusion sheet
Optical diaphragm group away from the transparent substrate side.
7. display device as described in claim 1, which is characterized in that the micro-led size is 50 μm -300
μm。
8. such as the described in any item display devices of claim 1-7, which is characterized in that the material of the protection glue-line be silica gel or
Epoxy resin.
9. such as the described in any item display devices of claim 1-7, which is characterized in that the material of the transparent substrate is poly- methyl
Methyl acrylate or polycarbonate.
10. a kind of backlight module, which is characterized in that including circuit board, be set on the circuit board it is multiple it is miniature shine two
Pole pipe covers the protection glue-line of the multiple micro-led and described circuit board, is set to the protection glue-line and deviates from
The transparent substrate of the circuit board side, and it is set to the diffuser plate that the transparent substrate deviates from the circuit board side；
Wherein, the thickness of the transparent substrate meets the micro-led light mixing distance.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110917948.3A CN113625489A (en) | 2019-09-20 | 2019-09-20 | Display device |
| CN201910891020.5A CN110456574A (en) | 2019-09-20 | 2019-09-20 | A kind of display device and backlight module |
| PCT/CN2020/083856 WO2021051787A1 (en) | 2019-09-20 | 2020-04-09 | Display device and backlight module |
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| WO2021051787A1 (en) * | 2019-09-20 | 2021-03-25 | 海信视像科技股份有限公司 | Display device and backlight module |
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| Publication number | Publication date |
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| CN113625489A (en) | 2021-11-09 |
| WO2021051787A1 (en) | 2021-03-25 |
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