CN107092051A - Light guide plate, backlight module and display device - Google Patents
Light guide plate, backlight module and display device Download PDFInfo
- Publication number
- CN107092051A CN107092051A CN201710469379.4A CN201710469379A CN107092051A CN 107092051 A CN107092051 A CN 107092051A CN 201710469379 A CN201710469379 A CN 201710469379A CN 107092051 A CN107092051 A CN 107092051A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- optics
- light guide
- 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.)
- Pending
Links
Classifications
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- 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
-
- 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
Abstract
The invention provides a kind of light guide plate, the backlight module using the light guide plate and the display device using the backlight module, the light guide plate, including light conducting plate body, light conducting plate body has the incidence surface and exiting surface being oppositely arranged, incidence surface, which is provided with, to be used to reflect and the optics of diffusing light is recessed, the inner surface of optics depression forms on the plane of refraction for wrapping up light source, the surface of incidence surface and is additionally provided with some optics sites for reflected light.The light guide plate reduces the thickness of backlight module and display device, realizes the ultrathin design of display device.
Description
Technical field
The invention belongs to display device technology field, more specifically, it is related to a kind of light guide plate, using the light guide plate
Backlight module and the display device using the backlight module.
Background technology
Display device such as display, LCD TV etc. are widely used in daily life, in order that light source in display device
The light sent evenly, sets light guide plate and reflecting plate, refraction and reflection that light passes through light guide plate typically in display device
The reflection of plate so that the light of light guide plate light emission side is uniformly distributed.
In the display device using straight-down negative lamp bar, in order to reach preferable light mixing effect in light guide plate light emission side, lead to
The often longer reflection of needs and refraction path, the cavity for causing light guide plate and reflecting plate to be collectively forming are thicker, increase display and set
Standby integral thickness.
The content of the invention
It is an object of the invention to provide a kind of light guide plate, to solve down straight aphototropism mode set chamber present in prior art
The thicker technical problem of body.
To achieve the above object, the technical solution adopted by the present invention is：Including light conducting plate body, the light conducting plate body tool
There are the incidence surface and exiting surface being oppositely arranged, the incidence surface, which is provided with, to be used to reflect and the optics of diffusing light is recessed, described
The inner surface of optics depression, which forms to be additionally provided with plane of refraction for wrapping up light source, the surface of the incidence surface, some to be used to reflect
The optics site of light.
Further, the cross section of the optics depression is circular arc or ellipse arc.
Further, the optics site is uniformly distributed on the incidence surface.
Further, the area of each optics site is become larger to the periphery by the center of the light source.
Further, the optics site is circular, rectangle or square.
Further, the light conducting plate body offers multiple equally distributed V-grooves on the incidence surface.
The beneficial effect for the light guide plate that the present invention is provided is：The incidence surface of light guide plate of the present invention be provided be used for reflect and
The optics depression of light is spread, the surface of incidence surface is provided with some optics sites for reflected light, and the light that light source is sent is through entering
After smooth surface refraction, then the reflection by optics site to light so that light is uniformly sent from the exiting surface of light guide plate, has been reached preferably
Light mixing effect.
The present invention also provides a kind of backlight module, including folds light guide plate, reflecting plate and the backboard set, in addition to fixation successively
In several light sources on the backboard, the light guide plate is above-mentioned light guide plate, the light source be arranged in the reflecting plate and
It is placed in the optics depression.
Further, length direction or width arrangement of the light source for multiple LED along the light guide plate are formed
Lamp bar.
Further, the optics depression is the long strip type groove consistent with the lamp bar length direction.
The beneficial effect for the backlight module that the present invention is provided is：The backlight module of the present invention uses above-mentioned light guide plate,
Preferable light mixing effect is can reach, light mixing distance required in backlight module is reduced, that is, reduces the thickness of light guide plate, so that
Reduce the thickness of backlight module.
The display device that the present invention is provided includes above-mentioned backlight module, and its advantage is：Reduce display device
Integral thickness, realize display device ultrathin design.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In required for the accompanying drawing that uses be briefly described, it should be apparent that, drawings in the following description are only some of the present invention
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the sectional structure chart of display device provided in an embodiment of the present invention；
Fig. 2 is the structure chart of the first embodiment of light guide plate of the present invention；
Fig. 3 is light guide plate provided in an embodiment of the present invention and the face upwarding assumption diagram of lamp bar；
Fig. 4 is the structure chart of the second embodiment of light guide plate of the present invention.
Wherein, each reference in figure：
1- display panels；2- front frames；3- centers；4- diaphragms；5- diffusion sheets；6- backboards；7- light guide plates；70- light guide plate sheets
Body；701- exiting surfaces；702- planes of refraction；703- incidence surfaces；71- optics is recessed；72- optics site；73-V type grooves；8- reflects
Plate；9- light sources.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
Referring to Fig. 2, existing illustrate to the light guide plate 7 that the present invention is provided.Light guide plate 7, including light conducting plate body 70, lead
Tabula rasa body 70 has the incidence surface 703 and exiting surface 701 being oppositely arranged.Specifically, the material of light conducting plate body 70 can be
The engineering plastics such as PMMA (polymethyl methacrylate), PC (makrolon).Incidence surface 703, which is provided with, to be used to reflect and spread light
The optics depression 71 of line, the inner surface of optics depression 71 forms the plane of refraction 702 for wrapping up light source 9, the surface of incidence surface 703
On be additionally provided with some optics sites 72 for reflected light.The light that light source 9 is sent is reflected by the plane of refraction 702 of optics depression 71
The inside of light conducting plate body 70 is diffused into, a part of light after refraction reflects light extraction by the exiting surface 701 of light guide plate 7,
Another part is totally reflected to the bottom of light conducting plate body 70, and some light for reaching incidence surface 703 overflows instead at optics site 72
Penetrate, then uniformly sent from the exiting surface 701 of light guide plate 7, while the light reflected from incidence surface 703 is reflected by reflecting plate 8
Uniformly sent from the exiting surface 701 of light guide plate 7 again afterwards.
The light guide plate 7 that the present invention is provided, compared with prior art, the light that light source 9 is sent by optics be recessed 71 refraction,
Again by the diffusing reflection of the optics site 72 on incidence surface 703, make the exiting surface 701 of the light that light source 9 is sent from light guide plate 7 equal
It is even to send, preferable light mixing effect can be reached, the thickness of light guide plate 7 is effectively reduced, the light conductivity of light guide plate 7 is enhanced
Energy.
Further, referring to Fig. 2, a kind of embodiment of the light guide plate 7 provided as the present invention, optics depression
71 cross section is circular arc or ellipse arc.Specifically, when light source 9 is single spot light 9, optics depression 71 is spherical
Shape is set or set in ellipsoid, and when light source 9 is array spot light 9, optics depression 71 is set in the dome shape of array distribution
Put or ellipsoid is set, but the invention is not restricted to this, optics depression 71 can also be set in polyhedron.Preferably, light should be provided with
The light guide plate 7 of depression 71 is learned by the integral extrusion forming of roller heat pressing process, roller is raised provided with ball-type or spheroid shape, with light
The shape for learning depression 71 is corresponding.
Further, the bottom of each optics depression 71 is rounded, or optics depression 71 is in long groove shape.Specifically, light
When source 9 is spot light, the bottom of optics depression 71 is rounded, light source 9 is placed in optics depression 71, so that light source 9 is sent out
The more refractions by optics depression 71 of light gone out；When light source 9 is strip light source, correspondingly, optics depression 71 is length
Channel-shaped, the more refractions by optics depression 71 of light that can send light source 9.
Preferably, optics depression 71 has focus, and light source 9 is located at focal point, and the light that focal point is sent is recessed by optics
Light is stronger after sunken 71 refraction and light spreads evenly.For example, optics depression 71 is spherical in shape, the spherical centre of sphere is that optics is recessed
Sunken 71 focus, focal point is located at by light source 9, and the light evenly and after refraction that the light that can send light source 9 spreads is stronger.
Further, referring to Fig. 3, a kind of embodiment of the light guide plate 7 provided as the present invention, optics site
72 are uniformly distributed on incidence surface 703.Specifically, optics site 72 is shaped as circular, rectangle or square.Optics site
72 when being shaped as circle, often the distance between center of circle of two neighboring optics site 72 is equal.Preferably, per two neighboring light
The distance between center of circle of site 72 is learned between 1mm-3mm.When being shaped as rectangle or square of optics site 72, phase
The distance between adjacent two square centers are equal.Preferably, optics site 72 is circle, the diameter model of optics site 72
It is trapped among between 0.3mm-0.8mm.Further, optics site 72 is typically made up of ink, is printed by the way of ink is sprayed
Identical printing screen plate, which will be distributed, on the incidence surface 703 of light guide plate 7, during printing with optics site 72 is covered in light guide plate 7
On incidence surface 703, then ink is sprayed on printing screen plate, equally distributed optics site 72 is formed on incidence surface 703.
Preferably, optics site 72 is on the incidence surface 703 around optics depression 71.Specifically, optics site 72 is used
The light reflected in reflection from optics depression 71, make the light sent evenly, so optics site 72 can only be distributed in optics
On incidence surface 703 around depression 71, production cost is saved.
Further, referring to Fig. 4, a kind of embodiment of the light guide plate 7 provided as the present invention, each optics
The area of site 72 is become larger to the periphery by the center of light source 9.Area closer to the optics site 72 of light source 9 is smaller, more
The area of optics site 72 away from light source 9 is bigger.Position light close to light source 9 is stronger, and the area of optics site 72 is smaller,
The light reflected by optics site 72 is less, and the reinforcement to emergent light light is relatively weak；Away from light source 9 position light compared with
Weak, the area of optics site 72 is larger, and the light launched by optics site 72 is more, to the reinforcement of emergent light light relatively
By force, the light for sending close and away from light source 9 position is more uniformly distributed.Certainly, light source 9 can be multiple light sources 9, positioned at two
Optics site 72 between light source 9, its area close to two light sources 9 to the direction away from two light sources 9 from gradually increasing, in phase
During the point midway of adjacent two light sources 9, the area of optics site 72 reaches maximum, is more uniformly distributed the light that multiple light sources 9 are sent.
Further, referring to Fig. 4, the second embodiment of the light guide plate 7 provided as the present invention, is provided with the present invention
The difference of first embodiment is that the exiting surface 701 of light guide plate 7 is provided with some equally distributed V-grooves 73, V-groove
73 are used for the light of blast outgoing, emergent ray is more uniformly distributed after the refraction of V-groove 73.Certainly, in order that emergent light
Line is brighter, and can also be sticked prism bar on exiting surface 701, lifts the brightness of emergent light, does not make unique restriction herein.
Referring to Fig. 1, the present invention also provides a kind of backlight module, the backlight module includes folding the light guide plate 7, anti-set successively
Plate 8 and backboard 6, in addition to the light source 9 being fixed on backboard 6 are penetrated, the quantity of light source 9 is one or more, and light guide plate 7 is above-mentioned
Light guide plate 7, light source 9 be arranged in reflecting plate 8 and be placed in optics depression 71 in.Specifically, under the backlight module in Fig. 1 is straight
The backlight module of formula, light source 9 is located at the lower section of light guide plate 7.Preferably, as shown in Figures 2 and 3, the quantity of light source 9 is multiple, phase
The quantity of Ying Di, incidence surface 702 and optics depression 71 is also multiple, and light source 9 is evenly distributed in the lower section of light guide plate 7.Light source 9
The light sent is after the refraction of optics depression 71, and a part of light passes through the outgoing of exiting surface 701 of light guide plate 7, another part reflection
By the diffusing reflection of optics site 72 to exiting surface 701 on to incidence surface 703, while the light reflected from incidence surface 703 passes through
Reflecting plate 8 reflexes to exiting surface 701, has reached preferable light mixing effect, reduces the thickness of light guide plate 7, and then reduces the back of the body
The thickness of optical mode group.
Further, referring to Fig. 3, as a kind of embodiment of the backlight module of the invention provided, light source 9 is
Lamp bar formed by length directions or width arrangement of multiple LED along light guide plate 7.Specifically, light source 9 can be multiple, institute
Also it is multiple with lamp bar, correspondingly, on light guide plate 7 there is multiple optics depression 71, lamp bar is fixed on backboard 6 and is placed in light
Learn and be recessed among 71.Preferably, optics depression 71 corresponding with lamp bar is the strip connected in star consistent with lamp bar length direction, side
Just the roll forming of optics depression 71.
Referring to Fig. 1, the present invention also provides a kind of display device, including above-mentioned backlight module, display device include but
It is not limited to display, LCD TV etc..Specifically, display device includes folding display panel 1, diaphragm 4, the diffusion sheet 5 set successively
And backlight module, in addition to diaphragm 4, diffusion sheet 5 and backlight module are interfixed center 3, panel is fixed on center 3
Front frame 2.Light from the outgoing of light guide plate 7 is atomized light after diffusion sheet 5, changes beam projecting angle, makes light more equal
It is even.The thickness of above-mentioned backlight module diminishes, and the thickness of display device diminishes, while reaching preferable light mixing effect, sets display
The standby integral thickness for waiting product is thinner, realizes the application of ultra-thin type.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. light guide plate, it is characterised in that：Including light conducting plate body, the light conducting plate body has the incidence surface being oppositely arranged and gone out
Smooth surface, the incidence surface, which is provided with, to be used to reflect and the optics of diffusing light is recessed, and the inner surface formation of the optics depression is used
Some optics sites for reflected light are additionally provided with the plane of refraction of parcel light source, on the surface of the incidence surface.
2. light guide plate as claimed in claim 1, it is characterised in that：The cross section of the optics depression is circular arc or elliptic arc
Shape.
3. light guide plate as claimed in claim 1, it is characterised in that：The optics site is uniformly distributed on the incidence surface.
4. light guide plate as claimed in claim 1, it is characterised in that：The area of each optics site is in the light source
The heart becomes larger to the periphery.
5. light guide plate as claimed in claim 1, it is characterised in that：The optics site is circular, rectangle or square.
6. light guide plate as claimed in claim 1, it is characterised in that：The light conducting plate body offers many on the incidence surface
Individual equally distributed V-groove.
7. backlight module, it is characterised in that：Including folding the light guide plate, reflecting plate and the backboard that set successively, in addition to it is fixed on described
Several light sources on backboard, the light guide plate is the light guide plate described in claim any one of 1-6, and the light source is arranged in institute
State reflecting plate and be placed in the optics depression.
8. backlight module as claimed in claim 7, it is characterised in that：The light source is length of multiple LED along the light guide plate
Spend lamp bar formed by direction or width arrangement.
9. backlight module as claimed in claim 8, it is characterised in that：The optics, which is recessed, is and the lamp bar length direction one
The long strip type groove of cause.
10. display device, it is characterised in that：Including backlight module as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710469379.4A CN107092051A (en) | 2017-06-20 | 2017-06-20 | Light guide plate, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710469379.4A CN107092051A (en) | 2017-06-20 | 2017-06-20 | Light guide plate, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107092051A true CN107092051A (en) | 2017-08-25 |
Family
ID=59640330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710469379.4A Pending CN107092051A (en) | 2017-06-20 | 2017-06-20 | Light guide plate, backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107092051A (en) |
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| CN108388047A (en) * | 2018-02-24 | 2018-08-10 | 惠科股份有限公司 | A kind of backlight module and display device |
| CN108469008A (en) * | 2018-01-18 | 2018-08-31 | 北京灵犀微光科技有限公司 | Dodging device and lighting device |
| CN108488693A (en) * | 2018-03-28 | 2018-09-04 | 武汉华星光电技术有限公司 | The production method of Mini LED backlights module and phosphor film layer |
| CN109239834A (en) * | 2018-08-31 | 2019-01-18 | 合肥泰沃达智能装备有限公司 | A kind of highlighting backlight mould group light guide plate |
| CN109491008A (en) * | 2019-01-05 | 2019-03-19 | 靖江市永盛光电科技有限公司 | A kind of direct backlight source structure with Integral secondary lens |
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| CN109239834A (en) * | 2018-08-31 | 2019-01-18 | 合肥泰沃达智能装备有限公司 | A kind of highlighting backlight mould group light guide plate |
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| CN109491008A (en) * | 2019-01-05 | 2019-03-19 | 靖江市永盛光电科技有限公司 | A kind of direct backlight source structure with Integral secondary lens |
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