CN110133792A - Light guide plate, backlight module, display component and electronic device - Google Patents
Light guide plate, backlight module, display component and electronic device Download PDFInfo
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- CN110133792A CN110133792A CN201910445109.9A CN201910445109A CN110133792A CN 110133792 A CN110133792 A CN 110133792A CN 201910445109 A CN201910445109 A CN 201910445109A CN 110133792 A CN110133792 A CN 110133792A
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- Prior art keywords
- light guide
- light
- guide plate
- area
- reflective
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—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
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
-
- 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
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
This application discloses a kind of light guide plate, backlight module, display component and electronic device, light guide plate includes the bottom surface of incidence surface connection incidence surface；Light guide plate includes the second light guide section for being formed with the first light guide section of the first light guide section and connection of incidence surface, second light guide section is located within the scope of the beam angle of point light source, first light guide section includes the first area within the scope of beam angle and the second area outside beam angle range, it is formed with reflective structure positioned at the bottom surface of the second light guide section, reflective structure is used to light reflexing to second area.In the light guide plate of the application embodiment, backlight module, display component and electronic device, since light is reflexed to the second area outside the beam angle range of point light source by reflective structure, so that the light that point light source can also be incident in light guide plate by second area is exported to outside light guide plate, the lighting area of light guide plate can be increased in this way, to increase the accounting of the effective district of light guide plate, be conducive to the black surround size for reducing display component.
Description
Technical field
This application involves technical field of electronic equipment, in particular to a kind of light guide plate, backlight module, display component and electronics
Device.
Background technique
In liquid crystal display die set, liquid crystal display die set includes liquid crystal layer and the light guide plate that is arranged in below liquid crystal layer.
Light guide plate is used to the light of backlight being oriented to liquid crystal layer.Backlight can inject light guide plate, light warp from the side of light guide plate
It is emitted to outside light guide plate after crossing light guide plate scattering.When backlight is point light source, since point light source has certain light emitting angle,
So that light guide plate can not be irradiated to by light close to some regions of the side of point light source and form dark space, dark space can not be by light
It exports to outside light guide plate, causes the accounting of the effective district (Active Area, AA) of light guide plate too small, be unfavorable for reducing liquid crystal
Show the black surround size of mould group.
Summary of the invention
In view of this, presently filed embodiment provides a kind of light guide plate, backlight module, display component and electronics dress
It sets.
The light guide plate of the application embodiment includes:
Incidence surface；With
Connect the bottom surface of the incidence surface, the bottom surface is formed with diffusing structure, and the diffusing structure is for will be from described
It is emitted to outside the light guide plate after the light scattering of incidence surface incidence；
The light guide plate includes the first light guide section and the second of connection first light guide section for being formed with the incidence surface
Light guide section, second light guide section are located within the scope of the beam angle of point light source, and first light guide section includes being located at the light out
First area in angular region and the second area outside the beam angle range, positioned at the bottom surface shape of second light guide section
The spaced reflective structure of diffusing structure described in Cheng Youyu, the reflective structure are used to light reflexing to secondth area
Domain.
The backlight module of the application embodiment includes:
Point light source；With
Light guide plate, the light guide plate include incidence surface and the bottom surface for connecting the incidence surface, and the point light source is arranged in institute
State incidence surface side, the bottom surface is formed with diffusing structure, and the diffusing structure is used for will be from the light of the incidence surface incidence
It is emitted to after scattering outside the light guide plate；
The light guide plate includes the first light guide section and the second of connection first light guide section for being formed with the incidence surface
Light guide section, second light guide section are located within the scope of the beam angle of the point light source, and first light guide section includes positioned at described
First area within the scope of beam angle and the second area outside the beam angle range, positioned at the bottom of second light guide section
Face is formed with to be used to light reflexing to described second with the spaced reflective structure of the diffusing structure, the reflective structure
Region.
The display component of the application embodiment includes above-described backlight module and the liquid crystal for covering the light guide plate
Layer.
The electronic device of the application embodiment includes shell and above-described display component, and display component is arranged in shell
Body.
In the light guide plate of the application embodiment, backlight module, display component and electronic device, since reflective structure is by light
Second area outside line reflection to the beam angle range for being located at point light source, so that second area can also be by point light source incidence
Light in light guide plate is exported to outside light guide plate, can increase the lighting area of light guide plate in this way, to increase light guide plate
The accounting of effective district is conducive to the black surround size for reducing display component.
The additional aspect and advantage of the application will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or recognized by the practice of the application.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the application is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, in which:
Fig. 1 is the floor map of the electronic device of the application embodiment；
Fig. 2 is the diagrammatic cross-section of the display component of the application embodiment；
Fig. 3 is the stereoscopic schematic diagram of the backlight module of the application embodiment；
Fig. 4 is the stereoscopic schematic diagram of another angle of the backlight module of the application embodiment；
Fig. 5 is the diagrammatic cross-section of the backlight module of the application embodiment；
Fig. 6 is the floor map of the backlight module of the application embodiment；
Fig. 7 is the enlarged schematic partial view of the backlight module of the application embodiment.
Main element symbol description:
Electronic device 1000, shell 1100, display component 1200, backlight module 1210, liquid crystal layer 1220, cover board 1230,
Frame 1240, circuit board 210, light guide plate 100, incidence surface 101, enters light section 1011, bottom surface 102, light-emitting surface at point light source 200
103, diffusing structure 10, astigmatism site 11, the first light guide section 20, first area 21, second area 22, line of demarcation 23, second are led
Light portion 30, reflective structure 40, reflective surface 41, groove 42.
Specific embodiment
Presently filed embodiment is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the application, and should not be understood as the limitation to the application.
In liquid crystal display die set, liquid crystal display die set includes light guide plate and liquid crystal layer, and light guide plate is for producing light source
Raw light is oriented to liquid crystal layer.In order to reduce the cost of liquid crystal display die set, by the way of light guide plate enters light using side, that is to say
It says, the lateral location of light guide plate is arranged in light source, and light source injects light into light guide plate from the side of light guide plate, and light is by leading
It is emitted to outside light guide plate after the reflection of tabula rasa.
In order to further reduce the cost, light source generally uses LED (light emitting diode) point light source, and LED point light source is along guide-lighting
The incidence surface of plate is intervally arranged.Since LED point light source has specific light-emitting angle range, light guide plate is close to LED point light
Source and the region being located within the scope of beam angle formation clear zone, and the region outside beam angle range forms dark space.These clear zones with
The brightness unevenness that dark space will lead to light guide plate is even, i.e., so-called hot spot (hot spot) phenomenon.At this point, light guide plate brightness unevenness is even
Region the accounting of the effective district of light guide plate as the effective district of light guide plate, can not be caused to reduce.Therefore, how to improve light guide plate
Hot spot phenomenon become technical problem urgently to be resolved.
Referring to Fig. 1, electronic device 1000 includes shell 1100 and display this application provides a kind of electronic device 1000
Component 1200, display component 1200 are arranged in shell 1100.
Illustratively, electronic device 1000 can be various types of calculating that are mobile or portable and executing wireless communication
Any one of machine system equipment (only illustratively shows a kind of form) in Fig. 2.Specifically, electronic device 1000 can be with
Android system (Android is based on for example, being based on iPhone system (apple system) for mobile phone or smart phone
System) phone, portable gaming device (such as iPhone (iPhone), laptop computer, palm PC (personal
Digital assistant, PDA), portable Internet appliance, music player and data storage device, other are hand-held to set
Standby and wrist-watch, In-Ear Headphones, pendant, headphone etc., electronic device 1000 can also be other wearable
Equipment is (for example, such as electronic glasses, electronics clothes, electronics bracelet, electronics necklace, electronics are tatooed, electronic equipment or smartwatch
Headset equipment (head mount display, HMD)).
Specifically, display component 1200 can be fixed by technique for dispensing glue and shell 1100.Shell 1100 is electronics dress
The supporting element for setting 1000 is used to support the components of electronic device 1000.Shell 1100 can also reduce electronic device 1000
Inner components impacted.Shell 1100 is whole generally rectangular.Shell 1100 can use metal or plastics system
At.
In present embodiment, display component 1200 is LCD assembly, and therefore, display component 1200 has liquid crystal display
Screen.Display component 1200 is located at the front side of electronic device 1000.Display component 1200 can pass through technique for dispensing glue and shell
1100 are fixedly connected.
Referring to Fig. 2, display component 1200 includes backlight module 1210 and liquid crystal layer 1220.Backlight module 1210 is for producing
Third contact of a total solar or lunar eclipse line simultaneously irradiates light to liquid crystal layer 1220.It is appreciated that liquid crystal is a kind of organic compound, applying electric field to liquid crystal
Afterwards, the molecules align of liquid crystal changes, and so as to change the light transmittance of liquid crystal, therefore, liquid crystal can control backlight module
1210 light for generating and being emitted to outside display component 1200.
Please refer to Fig. 3-Fig. 5, in present embodiment, backlight module 1210 includes point light source 200 and light guide plate 100.It is guide-lighting
Plate 100 includes incidence surface 101 and the bottom surface 102 for connecting incidence surface 101.Point light source 200 is arranged in 101 side of incidence surface.Bottom surface
102 are formed with diffusing structure 10, and diffusing structure 10 is used to that light guide plate will to be emitted to after the incident light scattering of incidence surface 101
Outside 100.
Referring to Fig. 6, light guide plate 100 includes the first light guide section 20 and the second light guide section 30, the first light guide section 20 connection the
Two light guide sections 30.First light guide section 20 is formed with incidence surface 101.Second light guide section 30 is located at the beam angle range of point light source 200
It is interior.First light guide section 20 includes first area 21 and second area 22, and first area 21 is located at the beam angle range of point light source 200
It is interior.Second area 22 is located at outside the light-emitting angle range of point light source 200.
Positioned at the bottom surface 102 of the second light guide section 30 be formed with the spaced reflective structure 40 of diffusing structure 10, it is reflective
Structure 40 is used to light reflexing to second area 22.
In the light guide plate 100 of the application embodiment, backlight module 1210, display component 1200 and electronic device 1000,
Since light is reflexed to the second area 22 outside the beam angle range of point light source 200 by reflective structure 40, so that the
Two regions 22 can also export the light that point light source 200 is incident in light guide plate 100 to outside light guide plate 100, can increase in this way
The lighting area of big light guide plate 100 is conducive to reduce display component 1200 to increase the accounting of the effective district of light guide plate 100
Black surround size.
If it is appreciated that lack reflective structure, then, the light for reflexing to second area 22 is few, this will make
Second area 22 forms dark space, causes the Hotspot phenomenon of light guide plate 100 obvious.And in the application, reflective structure 40 is by light
It is oriented to second area 22, this makes second area 22 be again formed as clear zone, so that clear zone is integrally formed in the first light guide section 20
Region area increase so that the effective district of light guide plate 100 increases.
It needs to refer in the application, the effective district of light guide plate 100 includes the second light guide section 30 and from the second light guide section 30
Edge extend and be laterally clear zone the first light guide section 20 part.
Point light source 200 is, for example, LED (Light Emitting Diode, light emitting diode).It is appreciated that light-emitting diodes
Pipe has light emitting angle, and in other words, light emitting diode is tapered to emergent ray around centered on itself.
Since multiple point light sources 200 are intervally arranged, the first light guide section 20 is located in two adjacent point light sources 200
Between some regions (second area 22) be located at outside the beam angle range of point light source 200, dark space easy to form.Reflective structure 40
Light can be oriented to second area 22, so that second area 22 can be formed as clear zone.
In the application, point light source 200 is arranged on circuit board 210, as shown in figure 4, circuit board 210 is, for example, flexible circuit
Plate, circuit board can connect the mainboard of electronic device 1000, so that mainboard can control the working condition of point light source 200.
Light guide plate 100 (light guide plate, LGP) can will have high reflectance using acrylic etc., and it is not inhaled
The material of light is made, so that light guide plate 100 has the effect of that light-conductive rate is high.Light guide plate 100 can make point light source 200
The light of light source is emitted to all angles, to improve the uniformity of beam projecting to liquid crystal layer 1220.It is appreciated that light guide plate
100 have light-emitting surface 103, and light guide plate 100 is for exporting light from light guide plate 100.
Incidence surface 101 is the side of light guide plate 100, and in other words, in the application, light guide plate 100 is side entering type entering light
Light guide plate.Incidence surface 101 can be the faces types such as plane or curved surface, not limit the shape of incidence surface 101 herein.Diffusing structure 10
Including astigmatism site 11, astigmatism site 11 can form the concave point or salient point with bottom surface 102.Astigmatism site 11 can change light
Reflection path, avoid light that from can not being emitted to outside light guide plate 100 from light-emitting surface 103 in 100 inner total reflection of light guide plate.Separately
Outside, the uniformity that light is emitted from light-emitting surface 103 can also be improved in astigmatism site 11.
In one example, astigmatism site 11 is close from distribution of first light guide section 20 on the direction of the second light guide section 30
Degree increases；In other words, the distribution density of astigmatism site 11 is proportional at a distance from incidence surface 101；Astigmatism site 11 is from incidence surface
101 distance is bigger, and distribution sealing is also bigger, on the contrary.In this way, at the position far from point light source 200, even if light is weaker, but
Astigmatism site 11 can scatter out most of light, so that light is equably exported to light-emitting surface 103, to improve light guide plate
100 light guide effect.
It should be pointed out that the first light guide section 20 and the second light guide section 30 are structure as a whole, entered with 22 distance of second area
The position of the maximum distance of smooth surface 101 is roughly parallel to the line of demarcation 23 in the sideline of incidence surface 101, this line of demarcation 23 is first
The boundary position of light guide section 20 and the second light guide section 30.In other words, line of demarcation 23 to the part between incidence surface 101 is first
Light guide section 20, the another part of light guide plate 100 in addition to the first light guide section 20 are the second light guide section 30.
" first " described herein, " second " are used for description purposes only, and are not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Person implicitly includes one or more feature.In the description of the present application, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Position due to the second light guide section 30 apart from point light source 200 is remote compared with the first light guide section 20, with going out for point light source 200
Optic angle range increases, and therefore, the second light guide section 30 is located within the scope of the beam angle of point light source 200.Herein, the second light guide section 30
In the intersection for the beam angle range for referring to all point light sources 200 within the scope of the beam angle of point light source 200, it is not necessarily referring to the second leaded light
Portion 30 is located within the scope of the beam angle of single point light source 200.
Reflective structure 40 and the setting of the interval of diffusing structure 10 refer to reflective structure 40 and diffusing structure 10 is two kinds of differences
Structure, the fine structure in reflective structure 40 can be located at the difference of bottom surface 102 with the fine structure of diffusing structure 10
Position.
Specifically, 5 and Fig. 7 is please referred to, reflective structure 40 includes reflective surface 41, and reflective surface 41 is used to reflex to light the
Two regions 22, reflective surface 41 is perpendicular to bottom surface 102.Reflective surface 41 is perpendicular to bottom surface 102, and point light source 200 enters from incidence surface 101
It is incident upon in light guide plate 100, therefore, the incident light of point light source 200 can expose to reflective surface 41, allow reflective surface 41 will
The incident light of point light source 200 reflexes to second area 22, so that second area 22 can export light to light guide plate 100
Outside.It is appreciated that also there is diffusing structure 10 positioned at the bottom surface 102 of second area 22, so that being emitted from second area 22
Light it is more uniform.
It should be pointed out that the height of reflective surface 41 is less than the thickness of light guide plate 100, it can prevent reflective surface 41 from hiding in this way
It is in the light and is incident upon the other positions of light guide plate 100.Reflective surface 41 can the shapes such as triangular in shape, quadrangle, pentagon, as long as instead
Light can be reflexed to second area 22 by smooth surface 41, and therefore, the application does not limit the shape of reflective surface 41.
In one example, as shown in FIG. 6 and 7, reflective structure 40 includes the multiple grooves 42 for being formed in bottom surface 102,
Reflective surface 41 is the side for surrounding groove 42, and multiple grooves 42 are arranged along the length direction of incidence surface 101.In other words, groove 42
Side the light of point light source 200 can be reflexed into second area 22.Multiple grooves 42 are arranged along the length direction of incidence surface 101
Column, in other words, the orientation of multiple grooves 42 is identical as the orientation of multiple point light sources 200.
Multiple grooves 42 can linearly arrange, and curved can also arrange, and not limit the arrangement of multiple grooves 42 herein
Shape.The arrangement shape of multiple grooves 42 is determined with the line of centres of groove 42.
In present embodiment, multiple reflective surfaces 41 surround the arc-shaped arrangement of second area 22.In this way, multiple reflective surfaces 41 are
Light can be reflexed to second area 22.It should be pointed out that each second area 22 is surrounded by multiple reflective surfaces 41.
In one example, groove 42 is in prismatic.In this way, groove 42 is easy to form.For example, groove 42 is in triangular prism
The shapes such as shape, quadrangular.Certainly, in other embodiments, the shape of groove 42 is not limited to prismatic, or other shapes
Shape, as long as guaranteeing reflective surface 41 perpendicular to bottom surface 102 light is reflexed to second area 22.
In present embodiment, light guide plate 100 is formed by the technique of injection molding, and forms multiple grooves 42.Due to recessed
Slot 42 is therefore subtle structure makes multiple grooves 42 easy to form, and reflective surface 41 compares light by the technique of injection molding
It is sliding, have the function of reflective, thereby may be ensured that light is reflexed to second area 22 by reflective surface 41.
In other embodiments, reflective structure 40 may include salient point, and salient point also has reflective surface 41.
In present embodiment, the distance between reflective structure 40 and incidence surface 101 range are 5-15mm.For example, reflective knot
The distance between structure 40 and incidence surface 101 are 5mm, 6mm, 7mm, 10mm, 12mm or 15mm equidimension.Within this range, reflective
Structure 40 is closer with incidence surface 101, and the light for reflexing to second area 22 is more.
It is any one in reflective structure 40 to need to refer to that the distance between reflective structure 40 and incidence surface 101 refer to
Minimum dimension between point and incidence surface 101.For example, the center of groove 42 and entering light when reflective structure 40 includes groove 42
The distance between face 101 range is 5-15mm.
Referring to Fig. 6, in present embodiment, incidence surface 101 include it is multiple enter light section 1011, each enter light section 1011 and be used for
A corresponding point light source 200.In other words, each enter the corresponding point light source 200 of light section 1011 to be arranged.Enter light section 1011 and puts light
The alignment setting of source 200, the light that point light source 200 issues are incident in light guide plate 100 from light section 1011 is entered.
Further, at least partly entering light section 1011 is to far from the recessed arcwall face of point light source 200.In this way, arcwall face
Incident light can be broken up, increase incident light and enter the angle in light guide plate 100, the area of smaller second area 22 is conducive to
The light that reflective structure 40 reflects all covers second area 22.In present embodiment, whole light sections 1011 that enters is arc
Face.
Referring to Fig. 2, in present embodiment, display component 1200 further includes cover board 1230 and frame 1240, cover board
1230 covering liquid crystal layers 1220, backlight module 1210 and liquid crystal layer 1220 are arranged in frame 1240.Cover board 1230 is electronics
The appearance element of device 1000.The material of frame 1240 is, for example, iron or plastics.
To sum up, the light guide plate 100 of the application embodiment includes incidence surface 101 and the bottom surface 102 for connecting incidence surface 101.
Point light source 200 is arranged in 101 side of incidence surface.Bottom surface 102 is formed with diffusing structure 10, and diffusing structure 10 is used for will be from incidence surface
It is emitted to outside light guide plate 100 after 101 incident light scatterings.
Light guide plate 100 includes the first light guide section 20 and the second light guide section 30, and the first light guide section 20 connects the second light guide section 30.
First light guide section 20 is formed with incidence surface 101.Second light guide section 30 is located within the scope of the beam angle of point light source 200.First is guide-lighting
Portion 20 includes first area 21 and second area 22, and first area 21 is located within the scope of the beam angle of point light source 200.Second area
22 are located at outside the light-emitting angle range of point light source 200.
Positioned at the bottom surface 102 of the second light guide section 30 be formed with the spaced reflective structure 40 of diffusing structure 10, it is reflective
Structure 40 is used to light reflexing to second area 22.
In this way, since light is reflexed to the second area outside the beam angle range of point light source 200 by reflective structure 40
22, so that second area 22 can also export the light that point light source 200 is incident in light guide plate 100 to light guide plate 100
Outside, the product of light-emitting surface 103 that can increase light guide plate 100 in this way, to increase the accounting of the effective district of light guide plate 100, is conducive to
Reduce the black surround size of display component 1200.
Above disclosure provides many different embodiments or example is used to realize the different structure of the application.In order to
Simplify disclosure herein, above the component of specific examples and setting are described.Certainly, they are merely examples, and
And purpose does not lie in limitation the application.In addition, the application can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, this application provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected.It can
To be mechanical connection, it is also possible to be electrically connected.It can be directly connected, can also can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside two elements.It for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in this application is understood as the case may be.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
The description of mode ", " example ", " specific example " or " some examples " etc. means embodiment or example is combined to describe specific
Feature, structure, material or feature are contained at least one embodiment or example of the application.In the present specification, right
The schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.Moreover, the specific features of description, knot
Structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
While there has been shown and described that presently filed embodiment, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principle and objective of the application and become
Type, scope of the present application are defined by the claims and their equivalents.
Claims (16)
1. a kind of light guide plate characterized by comprising
Incidence surface；With
Connect the bottom surface of the incidence surface, the bottom surface is formed with diffusing structure, the diffusing structure for will from it is described enter light
It is emitted to outside the light guide plate after the light scattering of face incidence；
The light guide plate includes the second leaded light for being formed with the first light guide section of the incidence surface and connecting first light guide section
Portion, second light guide section are located within the scope of the beam angle of point light source, and first light guide section includes being located at the beam angle model
First area and the second area outside the beam angle range, the bottom surface positioned at second light guide section in enclosing are formed with
With the spaced reflective structure of the diffusing structure, the reflective structure is used to light reflexing to the second area.
2. light guide plate according to claim 1, which is characterized in that the reflective structure includes reflective surface, the reflective surface
For light to be reflexed to the second area, the reflective surface is perpendicular to the bottom surface.
3. light guide plate according to claim 2, which is characterized in that the reflective structure includes be formed in the bottom surface more
A groove, the reflective surface are the side for surrounding the groove, and multiple grooves are arranged along the length direction of the incidence surface.
4. light guide plate according to claim 3, which is characterized in that multiple reflective surfaces are in arc around the second area
Shape arrangement.
5. light guide plate according to claim 3, which is characterized in that the groove is in prismatic.
6. light guide plate according to claim 3, which is characterized in that the light guide plate is formed by the technique of injection molding,
And form the multiple groove.
7. light guide plate according to claim 1, which is characterized in that the distance between the reflective structure and the incidence surface
Range is 5-15mm.
8. light guide plate according to claim 1, which is characterized in that the incidence surface include it is multiple enter light section, it is each described
Enter light section for corresponding to the point light source.
9. light guide plate according to claim 8, which is characterized in that entering light section described at least partly is to far from described light
The recessed arcwall face in source.
10. a kind of backlight module characterized by comprising
Point light source；With
Light guide plate, the light guide plate include incidence surface and the bottom surface for connecting the incidence surface, the point light source setting it is described enter
Smooth surface side, the bottom surface are formed with diffusing structure, and the diffusing structure is used to scatter from the light of the incidence surface incidence
After be emitted to outside the light guide plate；
The light guide plate includes the second leaded light for being formed with the first light guide section of the incidence surface and connecting first light guide section
Portion, second light guide section are located within the scope of the beam angle of the point light source, and first light guide section includes being located at the light out
First area in angular region and the second area outside the beam angle range, positioned at the bottom surface shape of second light guide section
The spaced reflective structure of diffusing structure described in Cheng Youyu, the reflective structure are used to light reflexing to secondth area
Domain.
11. backlight module according to claim 10, which is characterized in that the reflective structure includes reflective surface, described anti-
Smooth surface is used to light reflexing to the second area, and the reflective surface is perpendicular to the bottom surface.
12. backlight module according to claim 11, which is characterized in that the reflective structure includes being formed in the bottom surface
Multiple grooves, the reflective surface is the side for surrounding the groove, length direction of multiple grooves along the incidence surface
Arrangement.
13. backlight module according to claim 12, which is characterized in that multiple reflective surfaces surround the second area
Arc-shaped arrangement.
14. backlight module according to claim 10, which is characterized in that between the reflective structure and the incidence surface
Distance range is 5-15mm.
15. a kind of display component characterized by comprising
Backlight module described in claim 10-14 any one；With
Cover the liquid crystal layer of the light guide plate.
16. a kind of electronic device characterized by comprising
Shell；
Display component described in claim 15, the display component are arranged in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445109.9A CN110133792A (en) | 2019-05-27 | 2019-05-27 | Light guide plate, backlight module, display component and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445109.9A CN110133792A (en) | 2019-05-27 | 2019-05-27 | Light guide plate, backlight module, display component and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110133792A true CN110133792A (en) | 2019-08-16 |
Family
ID=67581848
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910445109.9A Pending CN110133792A (en) | 2019-05-27 | 2019-05-27 | Light guide plate, backlight module, display component and electronic device |
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| Country | Link |
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Cited By (1)
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|---|---|---|---|---|
| TWI838213B (en) * | 2023-04-11 | 2024-04-01 | 宏碁股份有限公司 | Portable electronic device |
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Application publication date: 20190816 |