CN110161754A - A kind of backlight module light-entry structure and backlight module - Google Patents

A kind of backlight module light-entry structure and backlight module Download PDF

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Publication number
CN110161754A
CN110161754A CN201910501032.2A CN201910501032A CN110161754A CN 110161754 A CN110161754 A CN 110161754A CN 201910501032 A CN201910501032 A CN 201910501032A CN 110161754 A CN110161754 A CN 110161754A
Authority
CN
China
Prior art keywords
light
led
plate
backlight module
light guide
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
Application number
CN201910501032.2A
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Chinese (zh)
Inventor
韩继远
孟长军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKYWORTH OPTICAL-ELECTRONIC Co Ltd
Original Assignee
SKYWORTH OPTICAL-ELECTRONIC Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SKYWORTH OPTICAL-ELECTRONIC Co Ltd filed Critical SKYWORTH OPTICAL-ELECTRONIC Co Ltd
Priority to CN201910501032.2A priority Critical patent/CN110161754A/en
Publication of CN110161754A publication Critical patent/CN110161754A/en
Pending legal-status Critical Current

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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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • 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
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0085—Means for removing heat created by the light source from the package
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • 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
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/133628—Illuminating devices with cooling means

Abstract

The present invention relates to back light model setting technology fields, disclose a kind of backlight module light-entry structure, including metal backing, heat sink strip, light guide plate, the first LED and the 2nd LED；Heat sink strip includes orthogonal first side plate and the second side plate, and the first side plate is fixed on the side of metal backing, and the second side plate is located at the back side of light guide plate；The inside of first side plate is provided with multiple the first LED being evenly arranged, the side incidence surface of the first LED face light guide plate along its length, and the inside of the second side plate is provided with multiple the 2nd LED being evenly arranged, the first LED and the 2nd LED interlaced arrangement along its length；The front side edge chamfering of light guide plate is provided with side reflector plate on the inclined surface of chamfering, and the light that the 2nd LED is issued can expose to side reflector plate, and side reflector plate is configured as entering the light refraction that the 2nd LED is issued in light guide plate.Backlight module includes above-mentioned backlight module light-entry structure.Not only it can satisfy brightness demand, but also can effectively radiate.

Description

A kind of backlight module light-entry structure and backlight module
Technical field
The present invention relates to back light model setting technology field more particularly to a kind of backlight module light-entry structures and backlight module.
Background technique
In liquid crystal display device, backlight module is one of the key component of liquid crystal display device, is mainly used for providing Enough brightness and the light source being evenly distributed, enable liquid crystal display panel normally to show image.
In general, the LED backlight in backlight module is divided into direct-insert backlight module and side entrance back module, with consumption Person constantly promotes display image quality, appearance requirement, and the requirement to backlight module is also higher and higher.Side entrance back module can Linear light source is converted to the display that area source realizes slimming by light guide plate.Usually meet display image quality demand, Need to sacrifice more brightness when adjusting display image quality.In order to make backlight module brightness reach a higher standard, but It is since the light efficiency of light guide plate is lower and the demand of the narrow frame for backlight module, usually we are for increasing LED Several and power.
For side entrance back module structure, increase LED power and number, the spacing that will lead between LED is too small, in this way It will appear LED and lead to the problem of and turn off the light because of radiating not good enough, influence product reliability.However as shown in Figure 1, work as LED10 When number is inadequate, then it will lead to and generate Hotspot phenomenon in incident side, generate dark space 20 as shown in Figure 1.
Therefore, a kind of backlight module light-entry structure and backlight module are needed, to solve the above technical problems.
Summary of the invention
The purpose of the present invention is to provide a kind of backlight module light-entry structure and backlight modules, both can be with backlight module Brightness demand, and the phenomenon of turning off the light generated because heat dissipation is not good enough can be effectively avoided, it ensure that product reliability.
To achieve this purpose, the present invention adopts the following technical scheme:
On the one hand, a kind of backlight module light-entry structure, including metal backing, heat sink strip and light guide plate are provided, further include One LED and the 2nd LED；
The heat sink strip includes orthogonal first side plate and the second side plate, and first side plate is fixed on the metal The side of backboard, the second side plate are located at the back side of light guide plate；
The inside of first side plate is provided with multiple the first LED being evenly arranged along its length, and the first LED is just To the side incidence surface of the light guide plate, the inside of second side plate is provided with multiple second be evenly arranged along its length LED, the first LED and the 2nd LED interlaced arrangement；
The front side edge chamfering of the light guide plate, is provided with side reflector plate on the inclined surface of the chamfering, and described second The light that LED is issued can expose to the side reflector plate, and the side reflector plate is configured as the light for issuing the 2nd LED Line is refracted into the light guide plate.
Preferably, the back side of the light guide plate is provided with into light convex spherical, it is described enter light convex spherical central axis with it is described The centre of luminescence axis of 2nd LED is coaxial.
Preferably, the back side of the light guide plate is provided with first boss, and two sides of the first boss are inclined-plane, institute State be arranged in first boss it is fluted, it is described enter light convex spherical be arranged in the groove.
It preferably, further include the first PCB and the 2nd PCB, the first PCB is attached at the inside of first side plate, institute The first LED is stated to be set on the first PCB；
2nd PCB is attached at the inside of second side plate, and the 2nd LED is set on the 2nd PCB.
It preferably, further include optical diaphragm, the optical diaphragm is attached at the front surface of the light guide plate.
It preferably, further include reflector plate, the reflector plate is attached at the back side of the light guide plate.
Preferably, second boss is provided on the inside of second side plate, the second boss is configured to support described Light guide plate and the reflector plate.
It preferably, further include center, the center includes orthogonal third side plate and the 4th side plate, the third side Plate is located at the top of the optical diaphragm, and the 4th side plate is located at the outside of first side plate, the 4th side plate and institute State the clamping of the first side plate.
Preferably, the material of the light guide plate is PMMA, PS, MS or PC, the table of the first PCB and the 2nd PCB Face is coated with reflective ink.
On the other hand, a kind of backlight module, including backlight module light-entry structure as described above are provided.
Beneficial effects of the present invention: the backlight module light-entry structure uses two groups of LED, and the first LED is that normal side enters Formula enters light mode, and the 2nd LED is located at the back side of light guide plate, and the light of transmitting enters in light guide plate after side reflector plate reflects, by It is staggered in the first LED and the 2nd LED, the light of the 2nd LED transmitting can be first after being refracted into light guide plate The dark space for the Hotspot phenomenon that LED is generated provides luminous flux.The luminous flux that two groups of LED are provided carries out complementation, can be light guide plate Sufficient luminous flux is provided, to meet the brightness demand of backlight module.
Since the 2nd LED is set to the back side of light guide plate, rather than it is set to the surrounding of light guide plate, the heat of generation passes through Second side plate of heat sink strip radiates, and the heat that the first LED is generated is radiated by the first side plate of heat sink strip, and first The heat that LED and the 2nd LED are generated can be removed quickly, can effectively avoid because radiate it is not good enough due to generates turn off the light and show As improving product reliability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of backlight module light-entry structure in the prior art；
Fig. 2 is the rearview of backlight module light-entry structure provided by the invention；
Fig. 3 is the section view of backlight module light-entry structure provided by the invention；
Fig. 4 is the schematic diagram that the 2nd LED of backlight module light-entry structure provided by the invention enters light mode.
In figure: 10, LED；20, dark space；
1, metal backing；2, heat sink strip；21, the first side plate；22, the second side plate；221, second boss；
3, light guide plate；31, side reflector plate；32, enter light convex spherical；33, first boss；331, inclined surface；332, groove； 34, optical diaphragm；35, reflector plate；
4, the first LED；5, the 2nd LED；6, the first PCB；7, the 2nd PCB；8, center；81, third side plate；82, the 4th side Plate；821, third boss.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "vertical", "horizontal", The orientation or positional relationship of the instructions such as "inner", "outside" be based on the orientation or positional relationship shown in the drawings or the invention produce Product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and should not be understood as referring to Show or imply relative importance.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with On.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ", " 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 be Mechanical connection, is also possible to be electrically connected.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower" It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above " Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of First feature horizontal height is less than second feature.
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
As in Figure 2-4, present embodiment discloses a kind of backlight module light-entry structures comprising metal backing 1, heat sink strip 2, light guide plate 3, the first LED4 and the 2nd LED5.
Wherein, the material of metal backing 1 is SEGG/SGCC/ aluminum profile etc., is used to support the whole knot of entire backlight module Structure.Light guide plate 3 is located at the inside of metal backing 1, and the material of light guide plate 3 is PMMA, PS, MS, PC etc..Heat sink strip 2 includes mutual The material of vertical the first side plate 21 and the second side plate 22, heat sink strip 2 is aluminium, passes through extrusion moulding.First side plate 21 also position It in the inside of the side of metal backing 1, and is fixed on the side of metal backing 1, specifically, metal back is fixed on by screw On plate 1.The left and right sides of light guide plate 3 is provided with the first side plate 21.
Second side plate 22 is located at the back side of light guide plate 3, and the inside of the first side plate 21 is provided with multiple uniform along its length First LED4 of arrangement, the side incidence surface of the first LED4 face light guide plate 3, side incidence surface are perpendicular, and the first LED4 is issued Light directly pass through side incidence surface and enter in light guide plate 3, it is common side entering type that this, which enters light mode,.Second side plate 22 it is interior Lateral edge length direction is provided with multiple the 2nd LED5 being evenly arranged, the first LED4 and the 2nd LED5 interlaced arrangement, two neighboring There is the 2nd LED5 among first LED4, there is the first LED4 in the centre of two neighboring 2nd LED5.Preferably, this reality The specification for applying the first LED4 and the 2nd LED5 in example is consistent, can also be different in other embodiments, and common specification is 7020/ 4010/4014 equal-specification.
The front side edge chamfering of light guide plate 3 is provided with side reflector plate 31, the 2nd LED5 hair on the inclined surface 331 of chamfering Light out can expose to side reflector plate 31, and side reflector plate 31 is configured as the light refraction that the 2nd LED5 is issued entering leaded light In plate 3.The inclination angle of side reflector plate 31 will guarantee to enter the light refraction that the 2nd LED5 is issued in light guide plate 3.
The backlight module light-entry structure uses two groups of LED, and the first LED4 is that normal side entering type enters light mode, and second LED5 is located at the back side of light guide plate 3, and the light of transmitting enters in light guide plate 3 after the refraction of side reflector plate 31, due to the first LED4 It is staggered with the 2nd LED5, the light of the 2nd LED5 transmitting can generate after being refracted into light guide plate 3 for the first LED4 Hotspot phenomenon dark space provide luminous flux.The luminous flux that two groups of LED are provided carries out complementation, can provide and fill for light guide plate 3 The luminous flux of foot, to meet the brightness demand of backlight module.
Since the 2nd LED5 is set to the back side of light guide plate 3, rather than it is set to 3 surrounding of light guide plate, the heat of generation is logical The second side plate 22 for crossing heat sink strip 2 radiates, and the heat that the first LED4 is generated is carried out scattered by the first side plate 21 of heat sink strip 2 The heat that heat, the first LED4 and the 2nd LED5 are generated can be removed quickly, can effectively avoid generating because heat dissipation is not good enough Phenomenon of turning off the light, improve product reliability.
Specifically, the back side of light guide plate 3 is provided with first boss 33, and two sides of first boss 33 are inclined-plane, and first It is arranged fluted 332 on boss 33, the quantity and position of the quantity of groove 332 and the 2nd LED5 match setting.First groove It is provided in 332 into light convex spherical 32, two sides of first boss 33 are center axis pair relative to light convex spherical 32 is entered Claim setting, the centre of luminescence axis for entering the central axis and the 2nd LED5 of light convex spherical 32 is coaxial.As shown in figure 4, the 2nd LED5 is issued Light through entering light convex spherical 32 after, realize light collimation convergence, the side reflector plate being incident in the chamfering of light guide plate 3 On 31, after reflecting by side reflector plate 31, enter light inside light guide plate 3.
Optionally, which further includes the first PCB6 and the 2nd PCB7, and the first PCB6 is attached at first The inside of side plate 21, the first LED4 are set on the first PCB6.Specifically, the first PCB6 is printed circuit board, and material is thermally conductive Rate >=2W/ (mk) aluminum substrate.The surface that first PCB6 is attached at the inside of the first side plate 21 is insulating surfaces.Preferably, In the present embodiment, the first PCB6 is adhered to the inside of the first side plate 21 by heat-conducting glue, can also pass through in other embodiments First PCB6 is fixed the inside for being attached at the first side plate 21 by screw or other mechanical means.First LED4 is welded by soldering It is connected on the first PCB6, the first PCB6 welds attached copper circuit layer on the surface of the first LED4, removes the portion with the first LED4 welding Point, the surface of the first PCB6 is coated with the reflective ink of white.
2nd PCB7 is printed circuit board, and material is the aluminum substrate of thermal conductivity >=2W/ (mk).2nd PCB7 is attached at The surface of the inside of two side plates 22 is insulating surfaces.Preferably, the 2nd PCB7 is adhered to second by heat-conducting glue in the present embodiment 2nd PCB7 can also be fixed by screw or other mechanical means attach in other embodiments by the inside of side plate 22 In the inside of the second side plate 22.For 2nd LED5 by soldering and welding on the 2nd PCB7, the 2nd PCB7 welds the table of the 2nd LED5 Attached copper circuit layer on face, removes the part with the 2nd LED5 welding, and the surface of the 2nd PCB7 is coated with the reflective ink of white.
Optionally, which further includes optical diaphragm 34 and reflector plate 35, and reflector plate 35, which is attached at, leads The back side of tabula rasa 3, reflector plate 35 can be improved 3 reflecting effect of light guide plate, Lifting Modules group brightness.Optical diaphragm 34 is attached at leaded light The front surface of plate 3 carries out concealing for the site to light guide plate 3 and improves subjective uniformity and Lifting Modules group brightness.Optics Diaphragm 34 can be one, or two, even more.The material of optical diaphragm 34 is diffusion sheet, composite membrane, brightness enhancement film And compound film sheet etc..
The inside of second side plate 22 is provided with second boss 221, and reflector plate 35 is adhered to second far from the side of light guide plate 3 On boss 221, second boss 221 is configured to support and fixation reflex piece 35 and light guide plate 3.
Optionally, which further includes center 8, and center 8 includes orthogonal 81 He of third side plate 4th side plate 82, third side plate 81 are located at the top of optical diaphragm 34, and the inside of third side plate 81 is provided with third boss 821, Third boss 821 fits in the edge of the front side of optical diaphragm 34.4th side plate 82 is located at the outside of the first side plate 21, and the 4th Side plate 82 and the first side plate 21 are clamped by snap-in structure, and center 8 is for fixing optical diaphragm 34 and light guide plate 3.
The present embodiment also discloses a kind of backlight module comprising backlight module light-entry structure as described above.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention Protection scope within.

Claims (10)

1. a kind of backlight module light-entry structure, including metal backing (1), heat sink strip (2) and light guide plate (3), which is characterized in that also Including the first LED (4) and the 2nd LED (5)；
The heat sink strip (2) includes orthogonal first side plate (21) and the second side plate (22), and first side plate (21) is solid Due to the side of the metal backing (1), the second side plate (22) is located at the back side of light guide plate (3)；
The inside of first side plate (21) is provided with multiple the first LED (4) being evenly arranged along its length, and described first The side incidence surface of light guide plate (3) described in LED (4) face, the inside of second side plate (22) are provided with multiple along its length The 2nd LED (5) being evenly arranged, the first LED (4) and the 2nd LED (5) interlaced arrangement；
The front side edge chamfering of the light guide plate (3) is provided with side reflector plate (31) on the inclined surface (331) of the chamfering, The light that 2nd LED (5) issues can expose to the side reflector plate (31), the side reflector plate (31) be configured as by The light refraction that 2nd LED (5) issues enters in the light guide plate (3).
2. backlight module light-entry structure according to claim 1, which is characterized in that the back side of the light guide plate (3) is arranged Have into light convex spherical (32), it is described enter light convex spherical (32) central axis and the 2nd LED (5) centre of luminescence axis it is coaxial.
3. backlight module light-entry structure according to claim 2, which is characterized in that the back side of the light guide plate (3) is arranged Have first boss (33), two sides of the first boss (33) are inclined-plane, are arranged on the first boss (33) fluted (332), it is described enter light convex spherical (32) be set in the groove (332).
4. backlight module light-entry structure according to claim 1, which is characterized in that further include the first PCB (6) and second PCB (7), the first PCB (6) are attached at the inside of first side plate (21), and the first LED (4) is set to described On one PCB (6)；
2nd PCB (7) is attached at the inside of second side plate (22), and the 2nd LED (5) is set to described second On PCB (7).
5. backlight module light-entry structure according to claim 1, which is characterized in that it further include optical diaphragm (34), it is described Optical diaphragm (34) is attached at the front surface of the light guide plate (3).
6. backlight module light-entry structure according to claim 1, which is characterized in that it further include reflector plate (35), it is described anti- Penetrate the back side that piece (35) is attached at the light guide plate (3).
7. backlight module light-entry structure according to claim 6, which is characterized in that set on the inside of second side plate (22) It is equipped with second boss (221), the second boss (221) is configured to support the light guide plate (3) and the reflector plate (35).
8. backlight module light-entry structure according to claim 5, which is characterized in that further include center (8), the center It (8) include orthogonal third side plate (81) and the 4th side plate (82), the third side plate (81) is located at the optical diaphragm (34) top, the 4th side plate (82) are located at the outside of first side plate (21), the 4th side plate (82) with it is described First side plate (21) clamping.
9. backlight module light-entry structure according to claim 4, which is characterized in that the material of the light guide plate (3) is The surface of PMMA, PS, MS or PC, the first PCB (6) and the 2nd PCB (7) is coated with reflective ink.
10. a kind of backlight module, which is characterized in that including backlight module light-entry structure as claimed in claims 1-9.
CN201910501032.2A 2019-06-11 2019-06-11 A kind of backlight module light-entry structure and backlight module Pending CN110161754A (en)

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CN110221479A (en) * 2019-07-19 2019-09-10 武汉天马微电子有限公司 A kind of backlight module and display device

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CN202182392U (en) * 2011-08-19 2012-04-04 深圳市华星光电技术有限公司 Backlight module and liquid crystal display
CN104896373A (en) * 2015-06-08 2015-09-09 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
CN207408715U (en) * 2017-09-30 2018-05-25 京东方科技集团股份有限公司 A kind of side entrance back module and display device
CN209433743U (en) * 2019-02-21 2019-09-24 昆山龙腾光电有限公司 A kind of lamp bar, backlight module and display device

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Publication number Priority date Publication date Assignee Title
CN201599655U (en) * 2009-12-05 2010-10-06 佛山市顺德区汉达精密电子科技有限公司 Side reflecting type backlight component
CN202182392U (en) * 2011-08-19 2012-04-04 深圳市华星光电技术有限公司 Backlight module and liquid crystal display
CN104896373A (en) * 2015-06-08 2015-09-09 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
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CN110221479A (en) * 2019-07-19 2019-09-10 武汉天马微电子有限公司 A kind of backlight module and display device
CN110221479B (en) * 2019-07-19 2022-05-17 武汉天马微电子有限公司 Backlight module and display device

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