CN110032003A - A kind of light emitting diode, backlight module and display device - Google Patents
A kind of light emitting diode, backlight module and display device Download PDFInfo
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- CN110032003A CN110032003A CN201910361914.3A CN201910361914A CN110032003A CN 110032003 A CN110032003 A CN 110032003A CN 201910361914 A CN201910361914 A CN 201910361914A CN 110032003 A CN110032003 A CN 110032003A
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- light
- emitting diode
- light emitting
- side wall
- backlight module
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The invention discloses a kind of light emitting diode, backlight module and display devices, comprising: pedestal, side wall and luminescence chip；Pedestal and side wall constitute accommodating cavity, and luminescence chip is set in accommodating cavity；The thickness far from pedestal side is set larger than by the thickness by the side wall of light emitting diode in the side close to pedestal, and transmission region is set by some regions of side wall, may be implemented by the emergent light of luminescence chip through after the transmission region to pedestal side deviation, to expand the optical range out of light emitting diode, hoisting light mixing effect；In addition, micro-structure is arranged in the inner surface of transmission region and/or outer surface, the light-emitting angle of adjustment light emitting diode can be realized by adjusting the shape and setting angle of micro-structure.
Description
Technical field
The present invention relates to field of display technology, espespecially a kind of light emitting diode, backlight module and display device.
Background technique
Light emitting diode (Light Emitting Diode, abbreviation LED) is one kind of semiconductor diode, can be electricity
It can be converted to luminous energy, there are energy conservation and environmental protection, service life length, low-power consumption, high brightness, the easily many advantages such as light modulation, be widely used in
The fields such as illumination, display, backlight.
The form of backlight module combination transluscent display panel is generallyd use in display device at this stage, in backlight module
Light source usually can be selected light emitting diode.In order to improve display brightness, making for light emitting diode can be increased in backlight module
With quantity, so that the spacing between light emitting diode reduces, the light mixing effect that this allows for adjacent light emitting diode is bad, meeting
Directly final influence display effect reduces user experience.
Summary of the invention
The present invention provides a kind of light emitting diode, backlight module and display device, to promote the light mixing of light emitting diode
Effect.
In a first aspect, the present invention provides a kind of light emitting diode, comprising: pedestal, side wall and luminescence chip；The pedestal
Accommodating cavity is constituted with the side wall, the luminescence chip is set in the accommodating cavity；Wherein,
Thickness of the side wall close to the pedestal side is greater than thickness of the side wall far from the pedestal side；
The side wall includes transmission region；On the direction that the luminescence chip is directed toward the side wall, the transmission region
The corresponding side wall is inner surface close to the surface of the luminescence chip side, and the corresponding side wall of the transmission region is remote
Surface from the luminescence chip side is outer surface, and the inner surface and/or the outer surface are provided with micro-structure.
Second aspect, the present invention provide a kind of backlight module, including any of the above-described light emitting diode, shell and optical diaphragm
Group；
The shell includes: backboard and side frame, and the backboard and the side frame form an accommodating space, multiple described luminous
In the accommodating space, the backboard and the optical diaphragm group are oppositely arranged, institute for diode and the optical diaphragm group position
Stating optical diaphragm group includes at least one layer of optical diaphragm.
The third aspect, the present invention provide a kind of display device, including any of the above-described backlight module and are located at the backlight mould
The display panel of group light emission side.
The present invention has the beneficial effect that:
Light emitting diode, backlight module and display device provided by the invention, comprising: pedestal, side wall and luminescence chip；
Pedestal and side wall constitute accommodating cavity, and luminescence chip is set in accommodating cavity；Wherein, thickness of the side wall close to pedestal side is greater than side
Thickness of the wall far from pedestal side；Side wall includes transmission region；On the direction that luminescence chip is directed toward side wall, transmission region is corresponding
Side wall close to luminescence chip side surface be inner surface, surface of the corresponding side wall of transmission region far from luminescence chip side
For outer surface, inner surface and/or outer surface are provided with micro-structure.By by the side wall of light emitting diode close to pedestal side
Thickness be set larger than the thickness far from pedestal side, and set transmission region for some regions of side wall, may be implemented
By the emergent light of luminescence chip through after the transmission region to pedestal side deviation, so that expand light emitting diode goes out light model
It encloses, promotes the light mixing effect of light emitting diode；It, can be in addition, micro-structure is arranged in the inner surface of transmission region and/or outer surface
The light-emitting angle of adjustment light emitting diode is realized by adjusting the shape and setting angle of micro-structure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of light emitting diode in the prior art；
Fig. 2 is the light mixing effect figure of light emitting diode in the prior art；
Fig. 3 is one of the side structure schematic view of light emitting diode provided in an embodiment of the present invention；
Fig. 4 is the two of the side structure schematic view of light emitting diode provided in an embodiment of the present invention；
Fig. 5 is the three of the side structure schematic view of light emitting diode provided in an embodiment of the present invention；
Fig. 6 is the light modulation schematic illustration of transmission region provided in an embodiment of the present invention；
Fig. 7 is one of the light modulation schematic illustration of micro-structure provided in an embodiment of the present invention；
Fig. 8 is the two of the light modulation schematic illustration of micro-structure provided in an embodiment of the present invention；
Fig. 9 is one of the structural schematic diagram of bulge-structure provided in an embodiment of the present invention；
Figure 10 is the second structural representation of bulge-structure provided in an embodiment of the present invention；
Figure 11 is the third structural representation of bulge-structure provided in an embodiment of the present invention；
Figure 12 is one of cavity disperse characteristic schematic diagram provided in an embodiment of the present invention；
Figure 13 is the two of cavity disperse characteristic schematic diagram provided in an embodiment of the present invention；
Figure 14 is the four of the side structure schematic view of light emitting diode provided in an embodiment of the present invention；
Figure 15 is that light emitting diode provided in an embodiment of the present invention goes out optical range schematic diagram；
Figure 16 is the light mixing effect figure of light emitting diode provided in an embodiment of the present invention；
Figure 17 is the five of the side structure schematic view of light emitting diode provided in an embodiment of the present invention；
Figure 18 is one of the overlooking structure diagram of light emitting diode provided in an embodiment of the present invention；
Figure 19 is the two of the overlooking structure diagram of light emitting diode provided in an embodiment of the present invention；
Figure 20 is the three of the overlooking structure diagram of light emitting diode provided in an embodiment of the present invention；
Figure 21 is one of the side structure schematic view of backlight module provided in an embodiment of the present invention；
Figure 22 is the two of the side structure schematic view of backlight module provided in an embodiment of the present invention；
Figure 23 is the overlooking structure diagram of backlight module shown in Figure 22；
Figure 24 is the three of the side structure schematic view of backlight module provided in an embodiment of the present invention；
Figure 25 is the four of the side structure schematic view of backlight module provided in an embodiment of the present invention；
Figure 26 is a kind of overlooking structure diagram of backlight module shown in Figure 21；
Figure 27 is the five of the side structure schematic view of backlight module provided in an embodiment of the present invention；
Figure 28 is the six of the side structure schematic view of backlight module provided in an embodiment of the present invention；
Figure 29 is the side structure schematic view of display device provided in an embodiment of the present invention；
Figure 30 is the top view of display device provided in an embodiment of the present invention.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, below in conjunction with attached drawing and implementation
The present invention will be further described for example.However, example embodiment can be implemented in a variety of forms, and it is not understood as limited to
Embodiment set forth herein；On the contrary, these embodiments are provided so that the present invention more comprehensively and completely, and by example embodiment party
The design of formula is comprehensively communicated to those skilled in the art.Identical appended drawing reference indicates same or similar knot in figure
Structure, thus repetition thereof will be omitted.The word of expression position and direction described in the present invention, is to be with attached drawing
The explanation that example carries out, but can also make a change as needed, done change is all contained in the scope of the present invention.The present invention
Attached drawing be only used for signal relative positional relationship do not represent actual proportions.
It should be noted that elaborating detail in the following description to fully understand the present invention.But this hair
Bright to be different from other way described herein with a variety of and be implemented, those skilled in the art can be without prejudice in the present invention
Similar popularization is done in the case where culvert.Therefore the present invention is not limited by following public specific embodiment.Specification is subsequent to be retouched
It states to implement the better embodiment of the application, so the description is not being used for the purpose of the rule for illustrating the application
To limit scope of the present application.The protection scope of the application is as defined by the appended claims.
At this stage used light emitting diode construction as shown in Figure 1, when LED package the side wall J that constitutes it is usual
For lighttight material, so that light emitting diode goes out optical range in the range of x.And when such light emitting diode is closely arranged
When column, as shown in Fig. 2, going out in optical range for adjacent light emitting diode can generate apparent dark space in the region BB, it will be such
When light emitting diode is applied in backlight module, the problem of will cause luminance nonuniformity, display effect is seriously affected.
In view of this, implementation column of the present invention provides a kind of light emitting diode, backlight module and display device, for solving hair
The problem of optical diode light mixing, can make backlight module go out light more when such light emitting diode is applied in backlight module
Add uniformly, is conducive to promote final display effect.
With reference to the accompanying drawing, to provided in an embodiment of the present invention.Wherein, the thickness of each component and shape do not reflect in attached drawing
The actual proportions of display device, purpose are schematically illustrate the content of present invention.
The embodiment of the present invention in a first aspect, provide a kind of light emitting diode, as shown in figure 3, the embodiment of the present invention provides
Light emitting diode, comprising: pedestal 11, side wall 12 and luminescence chip 13；Pedestal 11 and side wall 12 constitute accommodating cavity, and shine core
Piece 13 is set in accommodating cavity；Wherein, as shown in figure 3, side wall 12 is in thickness (the i.e. side wall 12 in Fig. 3 close to 11 side of pedestal
Bottom thickness) be greater than side wall 12 far from 11 side of pedestal thickness (i.e. the top thickness of side wall 12 in Fig. 3).
In above-mentioned light emitting diode provided in an embodiment of the present invention, side wall 12 includes transmission region 121；In luminescence chip
13 are directed toward on the direction of side wall 12, and the corresponding side wall of transmission region 121 is inner surface I close to the surface of 13 side of luminescence chip,
Surface of the corresponding side wall of transmission region 121 far from 13 side of luminescence chip is that outer surface O, inner surface I and/or outer surface O are set
It is equipped with micro-structure 122.As shown in figure 3, micro-structure can be arranged on the outer surface O of the transmission region 121 of light emitting diode
122；Alternatively, as shown in figure 4, micro-structure 122 can also be arranged on the inner surface I of the transmission region 121 of light emitting diode；Or
Person, as shown in figure 5, micro- knot can also be respectively provided on the inner surface I and outer surface O of the transmission region 121 of light emitting diode
Structure 122.
Since the side wall of above-mentioned light emitting diode provided in an embodiment of the present invention has transmission region, then luminescence chip 13
The high angle scattered light of outgoing can be emitted outward by the transmission region 121, it is possible thereby to the bottom position of light emitting diode
Emergent light carries out certain compensation, has the effect of that expanding light emitting diode goes out optical range.
Further, the structure that bottom thickness is greater than top thickness is set by the side wall of light emitting diode, makes side wall shape
At an inclined surface, as shown in fig. 6, when the emergent ray of luminescence chip 13 is incident on transmission region 121, transmission region
121 parts have played the effect similar to prism, can play the role of certain deviation to incident ray.Referring specifically to fig. 6, enter
It penetrates light a to be refracted to after the side wall for being incident on transmission region 121 in transmission region 121, forms refracted light b；Refracted light b
It is again incident on the outer wall of transmission region 121, forms emergent ray c after reflecting；And light c is for light a, to bottom
Deviation angle it is bigger, then, by the way that at least partly side wall of light emitting diode is arranged to transmission region, so that it may so that incident
Light to transmission region 121 is emitted to the bottom deviation for two pipes that shine, and can supplement the emergent light of light emitting diode wide-angle
Line when making multiple light emitting diode arranged adjacents, can have better light mixing effect.
Above-mentioned light emitting diode provided in an embodiment of the present invention is also provided in the inner surface I of side wall and/or outer surface O
Micro-structure 122.Material used in the micro-structure 122 can be identical as the material of transmission region 122, can form transmission region
When 121, while injection molding forms the micro-structure on its surface.The micro-structure 122 on 121 surface of transmission region can be bulge-structure, pass through
The adjustable beam projecting angle of tilt angle on bulge-structure surface is adjusted, for details, reference can be made to Fig. 7-Fig. 8.Micro- knot in Fig. 7
The inclined surface of structure 122 is more precipitous compared to the inclined surface of the micro-structure in Fig. 8, when light a1 is incident on transmission region
The refraction that light occurs after inner wall, forms refracted light b1, can be incident when refracted light b1 is incident on the outer wall with micro-structure
Onto the inclined surface of micro-structure 122, and due to the presence of inclined surface, so that light b1 is incident on the incident angle of interface
It changes, light forms emergent ray c1 further to bottom deviation after reflecting.When reduction micro-structure 122 is in transparent area
When the gradient of field surface, as shown in figure 8, the light a2 of the inner wall of transmission region is incident at the same angle, through inner wall
Refraction forms refracted light b2, and the incidence angle that refracted light b2 is incident on the inclined surface of micro-structure 122 is bigger, emergent ray c2
The direction of transmission region bottom will be more biased to.It can be seen that can by be arranged 122 inclined surface of micro-structure angle come
Adjustment light is incident on final shooting angle after transmission region, and the adjustment within the scope of light 0-180 degree theoretically may be implemented.
In the specific implementation, micro-structure 122 on the inner surface I and/or outer surface O of the corresponding side wall of transmission region
Tilt angle can be unanimously or inconsistent, and the micro-structure 122 of differing tilt angles can be arranged alternately, and will can also equally incline
The micro-structure 122 of rake angle, which is reunited, to be arranged, it is not limited here.
As described above, the micro-structure 122 for being set to transmission region surface can be bulge-structure, in practical applications, such as Fig. 9
Shown, bulge-structure may be configured as conical structure；Alternatively, as shown in Figure 10, bulge-structure may be set to be pyramid knot
Structure；Conical structure and pyramid-shaped structures can also be existed simultaneously on the surface of transmission region.As shown in figure 11, convex in order to reduce
The manufacture difficulty for playing structure, can do fillet processing for the top of conical structure.In addition to this, bulge-structure may be configured as symmetrically
Structure, may be set to be unsymmetric structure, and the setting of concrete shape can carry out spirit according to required beam projecting angle
Adjustment living, it is not limited here.
Embodiment as provided above, micro-structure, which is arranged to bulge-structure, can further increase the angle of emergent ray,
Bulge-structure can be circular cone perhaps pyramidal structure or other convex shape, so that the design of bulge-structure becomes more
Flexibly, design space is increased.
In the specific implementation, as shown in figure 12, the inner surface I and/or outer surface O of the transmission region of light emitting diode be not
The density for the bulge-structure (122) for including with region is different.The density of setting of bulge-structure can be according to the distribution of emergent ray
It is required that being configured, it is generally the case that can need that bulge-structure is more densely arranged by the position that light covers.Example
Such as, in embodiments of the present invention, the bottom deviation by light to light emitting diode is needed, it is mixed between light emitting diode to be promoted
Light effect.So, as shown in figure 13, it is wrapped in the inner surface I of transmission region 121 and/or outer surface O in the region close to pedestal 11
The density of the bulge-structure (122) included is greater than the density for the bulge-structure that the region far from pedestal 11 includes.In this way, can be more
Light to the bottom deviation of light emitting diode, is compensated the light distribution in LED bottom region, shone to be promoted by ground
Light mixing effect between diode.
As shown in figure 14, it is arranged by the symmetrical position (i.e. the left and right sides in Figure 14) of light emitting diode side wall 12
When at transmission region 121, the optical range that goes out of light emitting diode can be made to increase to the area y as shown in figure 15 by above-mentioned setting
Domain, compared to light emitting diode in the prior art shown in FIG. 1, the region y obviously than the region x there is wider array of light to cover model
It encloses, and also has beam projecting in the bottom of light emitting diode, then in light emitting diode close-packed arrays, as shown in figure 16,
Originally the region BB for generating dark space is also covered by light, it is possible thereby to promote the light mixing effect between light emitting diode, is made whole
Putting one's cards on the table for the light-emitting surface of body is more uniform.
In order to further homogenize light, as shown in figure 17, scattering particles can also be dispersed in the transmission region 121 of side wall
123.123 pairs of incident light of scattering particles are scattered, and are reflected light to all directions, are thus reached the homogenized mesh of light
's.In the production process, scattering particles can will be mixed in the transparent material of liquid, transmission region is being formed by Shooting Technique
121 structure.
The plan structure of above-mentioned light emitting diode provided in an embodiment of the present invention is as shown in Figure 18-Figure 20, light emitting diode
Side wall 12 11 place plane of pedestal orthographic projection be annular.When application scenarios difference, shining for suitable construction can choose
Diode.For example, light emitting diode as shown in figure 18, side wall is circular ring shape in the orthographic projection of 11 place plane of pedestal, should
Light emitting diode is more suitable for lighting area, downward back optical arena etc..When side wall all uses translucent material, then entirely
The side wall in portion belongs to above-mentioned transmission region 121, can achieve and expands to the comprehensive light-emitting angle of light emitting diode.And
In another enforceable mode, as shown in figure 19, the side wall 12 of light emitting diode is in the orthographic projection of 11 place plane of pedestal
Rectangular loop, including four side plates interconnected, wherein two both side plates are arranged oppositely, at least two side plates being arranged oppositely
Transmission region 121 is formed using translucent material.The opposite side wall in position is arranged to transmission region 121, may be implemented opposite
Transmission region direction on expand light light-emitting angle, if that arrange light emitting diode be a bank light when, will
The transmission region of adjacent each light emitting diode is oppositely arranged, the light mixing effect that can be obviously improved between light emitting diode.And
When all areas of side wall are all made of translucent material, as shown in figure 20, all areas of side wall are transmission region 121.It adopts
When making side wall with full impregnated luminescent material, the expansion light-emitting angle of horizontal and vertical two dimensions may be implemented, then no matter shining
Which kind of arrangement mode diode uses, and can achieve the effect of optimization light mixing, thus promotes light emitting diode and goes out the bright of light table
Spend the uniformity.
The second aspect of the embodiment of the present invention provides a kind of backlight module, as shown in figure 21, provided in an embodiment of the present invention
Backlight module, comprising: light emitting diode 100, shell 200 and the optical diaphragm group 300 of any of the above-described structure.
Wherein, shell 200 includes: backboard 21 and side frame 22, and backboard 21 and side frame 22 form an accommodating space, multiple to shine
Diode 100 and optical diaphragm group 300 are located in accommodating space, and backboard 21 and optical diaphragm group 300 are oppositely arranged, optical diaphragm
Group 300 includes at least one layer of optical diaphragm.
The side wall of each light emitting diode used by above-mentioned backlight module provided in an embodiment of the present invention is close to pedestal
The thickness of side is set larger than the thickness far from pedestal side, and sets transmission region for the partial region of side wall, can be with
Realize by the emergent light of luminescence chip through after the transmission region to pedestal side deviation, so that expand light emitting diode goes out light
Range promotes the light mixing effect of light emitting diode；In addition, micro-structure is arranged in the inner surface of transmission region and/or outer surface, it can
With the light-emitting angle of shape and setting angle realization adjustment light emitting diode by adjusting micro-structure.
In the specific implementation, the setting structure of backlight module can be selected according to the actual application.One kind can be real
In the mode applied, the side structure schematic view of backlight module as shown in figure 22, each light emitting diode 100 is arranged in a row to be formed
Lamp bar, Figure 23 are the overlooking structure diagram of Figure 22, and the extending direction of lamp bar and the side of light guide plate are parallel.Such as Figure 22-figure
Shown in 23, optical diaphragm includes: light guide plate 31, and the light-emitting surface of lamp bar intersects with the light-emitting surface of light guide plate.As shown in figure 22, lamp bar
Light-emitting surface it is consistent with the light-emitting surface of light emitting diode 100, the incidence surface of the light-emitting surface face light guide plate 31 is (guide-lighting in Figure 22
The incidence surface of plate is left side), after the light of light emitting diode outgoing is incident on light guide plate, by homogenizing for light guide plate, finally
It is emitted outward in the light-emitting surface (i.e. the upper surface of light guide plate shown in Figure 23) of light guide plate.
Due to the requirement at this stage to display device narrow frame, the distance between lamp bar and display area can be made gradually to press
Contracting, the light mixing distance for causing light emitting diode to reach display area constantly reduces, and the manufacture craft of light emitting diode is limited
System, and the gap between light emitting diode can not infinitely be reduced, this results in the complete light of non-light mixing can not be fully
It is homogenized by light guide plate, in the front of lamp bar, apparent bright dark areas occurs in the marginal position of display area, and firefly is caused to be asked
Topic.
In above-mentioned backlight module provided in an embodiment of the present invention, it can set the side wall of light emitting diode to such as Figure 19
Shown in structure, including four side plates interconnected, wherein two both side plates are arranged oppositely；Along each light emitting diode arrangement side
Two side plates being arranged oppositely upwards use light-transmitting materials, form transmission region 121.So, on the extending direction of lamp bar, often
The light-emitting angle of a light emitting diode is expanded, and has more light can be to the bottom outlet of light emitting diode, adjacent hair
Light mixing effect between optical diode is promoted, and light mixing effect can be found in Figure 16.When the light mixing effect of light emitting diode mentions
After rising, so that it may the problem of reducing the obvious area that display area edge occurs, to avoid firefly phenomenon.
In order to improve the utilizing status of light, as shown in figure 24, above-mentioned backlight module provided in an embodiment of the present invention may be used also
It include: the reflector plate 400 for deviating from 31 incidence surface side of light guide plate positioned at light emitting diode 100；Alternatively, as shown in figure 25, it can also
Reflectance coating 400 ' is arranged towards 100 1 side surface of light emitting diode in the side frame 22 of backlight module.Due to light emitting diode
Go out optical range increase after, have bottom outlet of some light to light emitting diode, this part light in addition to promoted light-emitting diodes
, can also be incident to reflector plate 400 or reflectance coating 400 ' except light mixing effect between pipe, it reflects and applies by reflector plate 400
, can be again incident to the incidence surface of light guide plate 31 after the reflection of layer 400 ', so that more light be made to be utilized by light guide plate, mention
The utilization efficiency of bloom.
In another enforceable mode, the side structure schematic view of backlight module as shown in figure 21, backlight module
In each light emitting diode 100 in array distribution formed light source assembly, a kind of plan structure is as shown in figure 26, light source assembly
Light-emitting surface is parallel with the light-emitting surface of optical diaphragm group 300.The backlight module of this structure is the backlight module of straight-down negative, is shone
The light-emitting angle of diode is limited, after adjacent light emitting diode light mixing, it may appear that makes so that light mixing effect is bad bright dark space
The problem of at brightness disproportionation.And use above-mentioned light emitting diode provided in an embodiment of the present invention when, can using translucent material come
The side wall of light emitting diode is made, then the structure setting of the above-mentioned light emitting diode provided through the embodiment of the present invention, increases hair
The light shooting angle of optical diode, so that light emitting diode also has preferable light mixing effect in small-pitch situation, gram
The problem of taking brightness disproportionation.
Similarly, in order to improve the utilizing status of light, as shown in figure 27, above-mentioned backlight mould provided in an embodiment of the present invention
Group may also include that the reflector plate 400 between light emitting diode 100 and backboard 21；Alternatively, as shown in figure 28, it can also be
Reflectance coating 400 ' is arranged towards the surface of 100 side of light emitting diode in the backboard 21 of backlight module.Due to light emitting diode
After optical range increases out, bottom outlet of some light to light emitting diode is had, this part light is in addition to promoting light emitting diode
Between light mixing effect except, can also be incident to reflector plate 400 or reflectance coating 400 ', by 400 reflectance coating of reflector plate
, can be again incident to the incidence surface of light guide plate 31 after 400 ' reflection, so that more light be made to be utilized by light guide plate, improve
The utilization efficiency of light.
The third aspect of the embodiment of the present invention provides a kind of display device, as shown in figure 29, provided in an embodiment of the present invention
Display device, comprising: any of the above-described backlight module and the display panel P positioned at backlight module light emission side.The display device can
Think that liquid crystal display panel, liquid crystal display, LCD TV etc. show equipment, or mobile phone as shown in figure 30, tablet computer,
The mobile terminal devices such as electron album, it is not limited here.The principle solved the problems, such as due to the display device and above-mentioned backlight mould
Group is similar, therefore the implementation of the display device may refer to the implementation of above-mentioned backlight module, and overlaps will not be repeated.
Light emitting diode, backlight module and display device provided in an embodiment of the present invention, comprising: pedestal, side wall and hair
Optical chip；Pedestal and side wall constitute accommodating cavity, and luminescence chip is set in accommodating cavity；Wherein, thickness of the side wall close to pedestal side
Degree is greater than thickness of the side wall far from pedestal side；Side wall includes transmission region；On the direction that luminescence chip is directed toward side wall, light transmission
The corresponding side wall in region is inner surface close to the surface of luminescence chip side, and the corresponding side wall of transmission region is far from luminescence chip one
The surface of side is outer surface, and inner surface and/or outer surface are provided with micro-structure.By by the side wall of light emitting diode close to base
The thickness of the side of seat is set larger than the thickness far from pedestal side, and sets transmission region for some regions of side wall,
May be implemented by the emergent light of luminescence chip through after the transmission region to pedestal side deviation, to expand light emitting diode
Optical range out promotes the light mixing effect of light emitting diode；In addition, micro- knot is arranged in the inner surface of transmission region and/or outer surface
Structure can realize the light-emitting angle of adjustment light emitting diode by adjusting the shape and setting angle of micro-structure.
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 (16)
1. a kind of light emitting diode characterized by comprising pedestal, side wall and luminescence chip；The pedestal and the side wall
Accommodating cavity is constituted, the luminescence chip is set in the accommodating cavity；Wherein,
Thickness of the side wall close to the pedestal side is greater than thickness of the side wall far from the pedestal side；
The side wall includes transmission region；On the direction that the luminescence chip is directed toward the side wall, the transmission region is corresponding
The side wall close to the surface of the luminescence chip side be inner surface, the corresponding side wall of the transmission region is far from institute
The surface for stating luminescence chip side is outer surface, and the inner surface and/or the outer surface are provided with micro-structure.
2. light emitting diode as described in claim 1, which is characterized in that the micro-structure is bulge-structure.
3. light emitting diode as claimed in claim 2, which is characterized in that the bulge-structure is conical structure or pyramid
Structure.
4. light emitting diode as claimed in claim 2, which is characterized in that the inner surface and/or the outer surface are in difference
The density for the bulge-structure that region includes is different.
5. light emitting diode as claimed in claim 4, which is characterized in that the inner surface and/or the outer surface are close
The density for the bulge-structure that the region of the pedestal includes is greater than the protrusion knot that the region far from the pedestal includes
The density of structure.
6. light emitting diode as described in any one in claim 1-5, which is characterized in that disperse in the transmission region of the side wall
There is scattering particles.
7. light emitting diode as described in claim 1, which is characterized in that positive throwing of the side wall in plane where the pedestal
Shadow is annular.
8. light emitting diode as claimed in claim 7, which is characterized in that the side wall includes four side plates interconnected,
Wherein, the side plate is arranged oppositely two-by-two, and at least two side plates being arranged oppositely form the light transmission using translucent material
Region.
9. light emitting diode as described in claim 1, which is characterized in that all areas of the side wall are all made of light transmission material
Material, all areas of the side wall are the transmission region.
10. a kind of backlight module, which is characterized in that including multiple such as the described in any item light emitting diodes of claim 1-9, shell
Body and optical diaphragm group；
The shell includes: backboard and side frame, and the backboard and the side frame form an accommodating space, multiple light-emitting diodes
In the accommodating space, the backboard and the optical diaphragm group are oppositely arranged, the light for pipe and the optical diaphragm group position
Learning diaphragm group includes at least one layer of optical diaphragm.
11. backlight module as claimed in claim 10, which is characterized in that each light emitting diode arranges formation lamp in a row
Item；
The optical diaphragm includes: light guide plate, and the light-emitting surface of the lamp bar intersects with the light-emitting surface of the light guide plate.
12. backlight module as claimed in claim 11, which is characterized in that the backlight module further include: be located at described shine
Diode deviates from the reflector plate of light guide plate incidence surface side；Alternatively,
The side frame is equipped with reflectance coating towards one side surface of light emitting diode.
13. backlight module as claimed in claim 12, which is characterized in that the side wall of the light emitting diode includes four
Side plate interconnected, wherein the side plate is arranged oppositely two-by-two；
Two side plates being arranged oppositely in each light emitting diode orientation use light-transmitting materials, are formed described
Light region.
14. backlight module as claimed in claim 10, which is characterized in that each light emitting diode forms light in array distribution
Source component；
The light-emitting surface of the light source assembly is parallel with the light-emitting surface of the optical diaphragm group.
15. backlight module as claimed in claim 14, which is characterized in that the backlight module further include: be located at described shine
Reflector plate between diode and the backboard；Alternatively,
The backboard is equipped with reflectance coating towards the surface of the light emitting diode side.
16. a kind of display device, which is characterized in that including such as the described in any item backlight modules of claim 11-15 and position
In the display panel of the backlight module light emission side.
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| CN201910361914.3A CN110032003B (en) | 2019-04-30 | 2019-04-30 | Light emitting diode, backlight module and display device |
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| CN201910361914.3A CN110032003B (en) | 2019-04-30 | 2019-04-30 | Light emitting diode, backlight module and display device |
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| CN115877612A (en) * | 2022-12-26 | 2023-03-31 | 惠科股份有限公司 | Backlight module and display device |
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| CN110032003B (en) | 2022-08-19 |
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