CN104776344B - LED light bar, backlight and display device - Google Patents
LED light bar, backlight and display device Download PDFInfo
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- CN104776344B CN104776344B CN201510224997.3A CN201510224997A CN104776344B CN 104776344 B CN104776344 B CN 104776344B CN 201510224997 A CN201510224997 A CN 201510224997A CN 104776344 B CN104776344 B CN 104776344B
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- 238000004020 luminiscence type Methods 0.000 claims abstract description 57
- 239000000758 substrate Substances 0.000 claims description 52
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- 238000009792 diffusion process Methods 0.000 claims description 24
- 230000004888 barrier function Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000010408 film Substances 0.000 description 16
- 230000003287 optical effect Effects 0.000 description 6
- 241000254158 Lampyridae Species 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012788 optical film Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000003854 Surface Print Methods 0.000 description 1
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- 230000003760 hair shine Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to display technology fields, disclose a kind of LED light bar, backlight and display device.The lamp bar includes being arranged on the light path adjustment cover of the light emission side of LED luminescence units, and the light path adjustment cover includes collective optics, and the light for being sent to LED luminescence units converges, to reduce the light emitting angle of LED luminescence units.For the LED light bar when being assembled into side-edge type backlight, smaller light emitting angle enables more light to inject in light guide plate, so as to reduce light efficiency loss when light injects light guide plate, improves light utilization, reduces energy consumption, increase the display brightness of product.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of LED light bar, backlight and display device.
Background technology
Since liquid crystal does not shine in itself, in the various liquid crystal display (Liquid such as liquid crystal display, LCD TV
Crystal Display, hereinafter referred to as " LCD ") in, it is required for realizing display by external backlight.Backlight according to point
Cloth position is divided into two kinds of side entering type and straight-down negative, and side-edge type backlight is few, at low cost, thick due to its required luminescent device number
It spends the advantages of thin and is widely used in the LCD of small-medium size.
With reference to shown in Fig. 1, side-edge type backlight include lamp bar 1, backboard 3 and the reflector plate 4 being successively set on backboard 3,
Light guide plate 2 and optical film material 5, lamp bar 1 are set close to the side of light guide plate 2.It further includes for lightguide plate fixing 2 and optical film material
5 glue frame 7.When assembling display device, display panel 6 is placed in glue frame 7, by front frame 8 by display panel 6 and backlight
It fits together.The effect of light guide plate 2 is to import the light at dipped beam end and conduct to distance light end, in light guide plate 2 and exit facet
Site is also printed on opposite lower surface, makes entire light-emitting surface uniform light, area source is formed, is supplied to display panel 6, is used
In display.
At present, lamp bar 1 is usually light emitting diode (Light Emitting Diode, hereinafter referred to as " LED ") lamp bar, is wrapped
Include multiple LED units 11.LED unit 11 has many advantages, such as that development properties are good, service life is long, mercury-free is environmentally friendly.But LED is mono-
Member 11 is linear light sorurce, and light emitting angle is 120 degree, and light has a degree of light efficiency loss, such as Fig. 2 when injecting light guide plate 2
Shown, especially light guide plate 2 is gradually toward slimming development, when the thickness of light guide plate 2 and the package dimension size phase of LED unit 11
At that time, light efficiency loss was especially serious, reached 5%~10%.
The content of the invention
The present invention provides a kind of lamp bar, backlight and display device, is led to solve the entrance of the light of side-edge type backlight
The problem of light efficiency loss during tabula rasa is serious.
In order to solve the above technical problems, providing a kind of LED light bar in the embodiment of the present invention, including matrix and it is arranged on described
Multiple LED luminescence units on matrix are provided with light path adjustment cover in the light emission side of LED luminescence units；
The light path adjustment cover includes collective optics, and the light for being sent to LED luminescence units converges.
Lamp bar as described above, it is preferred that the light path adjustment cover further includes diffused component, the LED luminescence units
The light sent is converged after the diffusion of the diffused component using the collective optics.
Lamp bar as described above, it is preferred that the collective optics includes first substrate and is arranged on the first substrate
On condensing film, the diffused component includes second substrate and the diffusion barrier that is arranged on the second substrate, the diffusion barrier
Positioned at the second substrate towards the one side of first substrate, the condensing film is located at one of the first substrate away from second substrate
Side.
Lamp bar as described above, it is preferred that pass through optical cement fixed bonding between the first substrate and second substrate.
Lamp bar as described above, it is preferred that the surface of the condensing film has the prism structure of convergence light.
Lamp bar as described above, it is preferred that the LED light bar includes multiple light path adjustment covers, the light path tune
The position of whole cover and the LED luminescence units corresponds.
Lamp bar as described above, it is preferred that the light path adjustment cover is fixed on the matrix of the LED light bar.
Lamp bar as described above, it is preferred that the shape of the light path adjustment cover is Loadings On Hemispherical Shell, is located at the LED
The outside of luminescence unit.
Lamp bar as described above, it is preferred that the end face of the light path adjustment cover has towards away from the extension of centre of sphere direction
First flange, the position that first flange is contacted with described matrix have the first via, described matrix and first via
Corresponding position is provided with the second via；
The LED light bar further includes：
Connecting pin, the connecting pin include cylinder, be arranged on described cylinder one end for locking the second flange and set
It puts in the cylinder other end for fixed pin hole, the cylinder passes through the first via and the second via, and described first is convex
Edge and matrix are fixed between second flange and pin hole, are fixed on the matrix so as to which the light path is adjusted cover, and
Spacing between second flange and pin hole is more than the sum of thickness of first flange and matrix.
Lamp bar as described above, it is preferred that the material of the connecting pin is metal.
A kind of backlight is also provided in the embodiment of the present invention, including backboard and the lamp bar being arranged on the backboard and leaded light
Plate, the light guide plate include exit facet and the plane of incidence adjacent with the exit facet, and the lamp bar enters close to the light guide plate
Face setting is penetrated, the lamp bar is LED light bar as described above.
A kind of display device in the embodiment of the present invention is also provided, light is provided including display panel and for the display panel
Backlight, the backlight be backlight as described above.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
In above-mentioned technical proposal, LED light bar includes being arranged on the light path adjustment cover of the light emission side of LED luminescence units, described
Light path adjustment cover includes collective optics, and the light for being sent to LED luminescence units converges, to reduce LED luminescence units
Light emitting angle.For the LED light bar when being assembled into side-edge type backlight, smaller light emitting angle enables more light
It injects in light guide plate, so as to reduce light efficiency loss when light injects light guide plate, improves light utilization, reduce energy consumption, increase
The display brightness of product.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other attached drawings according to these attached drawings.
Fig. 1 shows the partial structural diagrams of display device；
Fig. 2 represents the index path of side-edge type backlight in the prior art；
Fig. 3 represents the partial schematic diagram of lamp bar and light guide plate in the embodiment of the present invention；
Fig. 4 represents the close-up schematic view of light path adjustment cover in the embodiment of the present invention；
Fig. 5 represents the index path of side-edge type backlight in the embodiment of the present invention；
Fig. 6 represents the structure diagram of lamp bar in the embodiment of the present invention；
Fig. 7 represents the close-up schematic view at dotted line frame in Fig. 6.
Specific embodiment
, it is necessary to which backlight shows required light to provide in LCD technology.For side-edge type backlight, lamp
The light that item is sent initially enters light guide plate, and distance light end is transmitted to by light guide plate, and in the light guide plate following table opposite with exit facet
Face printing light reflection site, carries out diffusing reflection to light, makes entire light-emitting surface uniform light, form area source.
The present invention provides a kind of lamp bar and backlight, and the light sent to improve lamp bar injects light efficiency during light guide plate.
The lamp bar includes the multiple LED luminescence units of matrix and setting on the matrix, is set in the light emission side of LED luminescence units
There is light path adjustment cover.The light path adjustment cover includes collective optics, and the light for being sent to LED luminescence units converges,
To reduce the light emitting angle of LED luminescence units.It is specially side-edge type backlight after backlight is assembled into, LED luminescence units are sent out
The light gone out is projected, in the certain situation of light guide plate after the convergence of the collective optics with smaller light emitting angle
Under so that more light can be injected in light guide plate, so as to reduce light efficiency loss when light injects light guide plate, improve light
Utilization rate reduces energy consumption.
Technical scheme is particularly suitable for the backlight using slimming light guide plate, reduces the effect of light efficiency loss
It is more notable.
In the prior art, side-edge type backlight is divided into as single side entering type and double side entering types.For single side-edge type backlight, only
Lamp bar is set in the one side of backboard, i.e. only there are one the planes of incidence for light guide plate.For double side-edge type backlights, in the opposite of backboard
Both sides set lamp bar, i.e. there are two the opposite planes of incidence for light guide plate.
Side-edge type backlight in the present invention can be single side-edge type backlight or double side-edge type backlights.
It should be noted that in technical scheme, the luminescence unit of lamp bar or other linear light sorurces, and
The LED luminescence units being not limited in the present invention.
Below in conjunction with drawings and examples, the specific embodiment of the present invention is described in further detail.Following reality
Example is applied for illustrating the present invention, but is not limited to the scope of the present invention.
With reference to shown in Fig. 3 and Fig. 4, the LED light bar in the embodiment of the present invention includes matrix 10 and is arranged on matrix 10
Multiple LED luminescence units 11 are provided with the circuit board (not shown) of driving LED luminescence units 11 on matrix 10.It is sent out in LED
The light emission side of light unit 11 is provided with light path adjustment cover 12, and light path adjustment cover 12 includes collective optics 121, for shining to LED
The light that unit 11 is sent is converged, to reduce the light emitting angle of LED luminescence units 11.
LED light bar in the embodiment of the present invention after backlight is assembled into, be specially side-edge type backlight, collective optics
121 setting so that the light that LED luminescence units 11 are sent injects (comparison diagram 2 and Fig. 5 institutes in light guide plate 2 with smaller angle
Show), so as to reduce light efficiency loss when light injects light guide plate 2, light utilization is improved, reduces energy consumption.
Wherein, the structure of collective optics 121 can be：Including first substrate 100 and it is arranged on poly- on first substrate 100
Light film 1211.First substrate 100 is transparent substrate, such as：Glass substrate, quartz base plate, organic resin substrate are condensing film 1211
Supporting body is provided.Condensing film 1211 plays the role of converging light.
In the prior art, the optical element that can be converged to light has very much, such as：Convex lens, prism or refractive index are not
Same two dielectric layers (refractive index of first substrate 100 and condensing film 1211 is different).
The surface of condensing film 1211 in the embodiment of the present invention has the prism structure of convergence light.
Specifically can light path be adjusted cover 12 to be fixed on the matrix 10 of LED light bar, convenient for the assembling of light path adjustment cover 12.
It is substantially parallel to be preferably provided the plane of incidence of the exit facet and light guide plate 2 of light path adjustment cover 12, must can effectively make lamp
The light that item 1 is sent is again incident on after the convergence by collective optics 121 in light guide plate 2, improves the utilization rate of light, so as to
To improve the brightness of backlight.
LED light bar in the embodiment of the present invention can include multiple light paths adjustment cover 12, and set light path adjustment cover 12 with
The positions of LED luminescence units 11 corresponds, as shown in figure 3, the light sent so as to each LED luminescence units 11 is by only
Vertical light path adjustment cover 12 is converged, and reduces the size of light path adjustment cover 12, so as to reduce increased 12 pairs of light path adjustment cover
The influence of spacing between LED luminescence units 11 and light guide plate 2.Simultaneously, additionally it is possible to simplify the structure of light path adjustment cover 12, be convenient for
It makes.Specifically, light path adjustment cover 12 is fixed on the matrix 10 of LED light bar, and with the positions of LED luminescence units 11 one by one
It is corresponding, after the light that LED luminescence units 11 are sent is converged by corresponding light path adjustment cover 12, then inject in light guide plate 2.
Wherein, the shape of light path adjustment cover 12 can be Loadings On Hemispherical Shell, be located at the outside of LED luminescence units 11.
It, can be by the way that light path adjustment cover 12 be fixed on lower structure when the shape of light path adjustment cover 12 is Loadings On Hemispherical Shell
On the matrix 10 of LED light bar 1：
It is set in the end face of light path adjustment cover 12 towards the first flange 123 away from the extension of centre of sphere direction, as shown in fig. 6, the
There is the first via, the position corresponding with first via of matrix 10 at the position that one flange 123 is contacted with described matrix 10
It is provided with the second via；
Light path adjustment cover 12 is fixed on matrix 10 with connecting pin 9, specifically, connecting pin 9 includes cylinder 90, is arranged on
90 one end of cylinder for locking the second flange 91 and be arranged on 90 other end of cylinder for fixed pin hole.Cylinder 90 is worn
The second via on the first via and matrix 10 on the first flange 123 is crossed, bolt 92 is inserted into the pin hole, by the first flange
123 and matrix 10 be fixed between the second flange 91 and the pin hole, so as to which 12 light path adjustment cover is fixed on LED light bar 1
On matrix 10.
Preferably, the spacing between the second flange 91 and the pin hole be more than the first flange 123 and matrix 10 thickness it
With provide certain extendable room for 123 expanded by heating of the first flange.
Second flange 91 can be in specifically umbrella, be unidirectional sexuality.The material of connecting pin 9 is metal, can be timely
The heat derives that LED luminescence units 11 are distributed, the temperature for avoiding lamp bar 1 are excessively high.
Certainly, the structure type that light path adjustment cover 12 is fixed on matrix 10 is not limited to above-mentioned one kind, can also lead to
The modes such as bolt, bonding are crossed to fix.The shape of light path adjustment cover 12 is also not limited to Loadings On Hemispherical Shell, can also be pyramid
Shape, semielliptical housing etc..
For LED luminescence units 11, the characteristic of linear light sorurce also causes LED luminescence units 11 apart from display panel 6
When viewing area (AA areas) is nearer, occur between adjacent LED luminous units 11 light according to less than region form blanking bar, and crossover
The place of fork forms optically focused band, that is, 11 mixed light of LED luminescence units is uneven, and such one bright one the phenomenon that being secretly alternately distributed is i.e.
For focal point phenomenon (also referred to as firefly phenomenon).
In order to solve the above-mentioned technical problem, light path is set to adjust cover 12 and further includes diffused component 122, as shown in Figure 4.LED
The light that luminescence unit 11 is sent is converged, with reference to Fig. 6 after the diffusion of diffused component 122 using collective optics 121
Shown in Fig. 7.The fixed-direction (120 ° of light emitting angles) that LED luminescence units 11 can be sent due to diffused component 122
Light is broken up to all directions, increases the light emitting angle of LED luminescence units 11 so that script light between LED luminescence units 11
Line according to less than no light zone also have light injection, to the effect of being greatly improved of firefly phenomenon.
Wherein, the structure of diffused component 122 can be：Including second substrate 200 and the expansion being arranged on second substrate 200
Film 1221 is dissipated, with reference to shown in Fig. 4.Second substrate 200 is transparent substrate, such as：Glass substrate, quartz base plate, organic resin substrate,
Supporting body is provided for diffusion barrier 1221.
Specifically, diffusion particle can be set on the surface of diffusion barrier 1221, diffusion particle sends LED luminescence units 11
Light break up to all directions, the light emitting angle of increase LED luminescence units 11 plays the role of being diffused light.
In a specific embodiment, as shown in figure 4, light path adjustment cover 12 includes collective optics 121 and diffusion member
Part 122.Collective optics 121 includes first substrate 100 and the condensing film 1211 being arranged on first substrate 100, condensing film 1211
Surface have convergence light prism structure.Diffused component 122 includes second substrate 200 and is arranged on second substrate 200
Diffusion barrier 1221, the surface of diffusion barrier 1221 is provided with diffusion particle.
Wherein, diffusion barrier 1221 is located at second substrate 200 towards the one side of first substrate 100, and condensing film 1211 is located at the
One one side of the substrate 100 away from second substrate 200.
In this embodiment it is preferred that ground, is fixed by optical cement 13 between first substrate 100 and second substrate 200 and glued
It connects so that light path adjustment cover 12 is an overall structure.
As a preferred embodiment, LED light bar 1 includes multiple light paths adjustment cover 12, and light path adjustment cover 12 with
The position of LED luminescence units 11 corresponds, and is fixed on the matrix 10 of LED light bar.Each light path adjustment cover 12 includes poly-
Optical element 121 and diffused component 122, the plane of incidence of the exit facet and light guide plate 2 of light path adjustment cover 12 are substantially parallel.LED shines
The light that unit 11 is sent is converged after the diffusion of diffused component 122 using collective optics 121, injects light guide plate 2
In.The setting of diffused component 122 can be obviously improved firefly phenomenon, and the setting of collective optics 121 can improve LED and shine list
The light that member 11 is sent injects light efficiency during light guide plate 2, improves the utilization rate of light, increases the brightness of backlight.
With reference to shown in Fig. 1, a kind of backlight is also provided in the embodiment of the present invention, is specially side-edge type backlight, including
Backboard 3 and the lamp bar 1 being arranged on backboard 3 and light guide plate 2.Light guide plate 2 includes exit facet and adjacent with the exit facet enters
Face is penetrated, lamp bar 1 is set close to the plane of incidence of light guide plate 2.The light that lamp bar 1 is sent initially enters light guide plate 2, is passed by light guide plate 2
Distance light end is transported to, and light reflection site is printed in the lower surface opposite with exit facet of light guide plate 2, diffusing reflection is carried out to light, is made
Entire light-emitting surface uniform light, forms area source, is supplied to display panel 6, is shown.
The lamp bar 1 is the LED light bar in the embodiment of the present invention, and the light that LED luminescence units 11 are sent thereon is by poly-
Optical element 121 is converged, and has smaller light emitting angle, can be improved light efficiency when light injects light guide plate 2, be improved light
Utilization rate, reduce energy consumption, increase the brightness of backlight.
Further, the light path adjustment cover 12 of LED light bar 1 further includes diffused component 122, what LED luminescence units 11 were sent
Light is converged after the diffusion of diffused component 122 using collective optics 121.Diffused component 122 can send out LED
The light for the fixed-direction (120 ° of light emitting angles) that light unit 11 is sent is broken up to all directions, increases LED luminescence units
11 light emitting angle, make script light between LED luminescence units 11 according to less than no light zone also have light injection, firefly is showed
As the effect of being greatly improved.
LED light bar 1 in the embodiment of the present invention specifically includes：
Matrix 10；
The multiple LED luminescence units 11 being arranged on matrix 10；
Multiple light path adjustment covers 12, are fixed on matrix 10, are corresponded with the position of LED luminescence units 11, light path tune
Whole cover 12 is located at the light emission side of corresponding LED luminescence units 11；
Light path adjustment cover 12 includes：
Collective optics 121, including first substrate 100 and the condensing film 1211 being arranged on first substrate 100, condensing film
1211 surface has the prism structure of convergence light；
Diffused component 122, including second substrate 200 and the diffusion barrier 1221 being arranged on second substrate 200, diffusion barrier
1221 surface is provided with the diffusion particle being diffused to light；
Second base is located at by 13 fixed bonding of optical cement, diffusion barrier 1221 between first substrate 100 and second substrate 200
Plate 200 is located at one side of the first substrate 100 away from second substrate 200 towards the one side of first substrate 100, condensing film 1211.
The light that LED luminescence units 11 are sent carries out after the diffusion of diffused component 122 using collective optics 121
Convergence is projected.
With reference to shown in Fig. 1, the backlight in the embodiment of the present invention includes：
Backboard 3；
The lamp bar 1 and light guide plate 2 being arranged on backboard 3, light guide plate 2 include exit facet and adjacent with the exit facet enter
Face is penetrated, the lower surface printing light reflection site (not shown) opposite with exit facet of light guide plate 2, lamp bar 1 is close to light guide plate 2
The plane of incidence is set；
Lamp bar 1 is above-mentioned LED light bar, has smaller light emitting angle, and the light sent initially enters light guide plate 2, by
Light guide plate 2 is transmitted to distance light end, and the light reflection site on the lower surface opposite with exit facet of light guide plate 2 carries out light unrestrained anti-
It penetrates, makes entire light-emitting surface uniform light, form area source；
The one side opposite with exit facet of light guide plate 2 is provided with sheet emitting 4, for reflecting light, make light from
The exit facet of light guide plate 2 projects；
The side where the exit facet of light guide plate 2 is provided with optical film material 5, including brightness enhancement film, diffusion barrier etc., for light
It is adjusted, then projects；
Glue frame 7, for lightguide plate fixing 2 and optical film material 5.
Including display panel 6 and it is display panel 6 as shown in Figure 1, also providing a kind of display device in the embodiment of the present invention
The backlight of light is provided.Display panel 6 is placed in the glue frame 7 of backlight.The display device further includes front frame 8, is used for
Fixed assembling display panel 6 and backlight.
The backlight is the backlight in the embodiment of the present invention, so as to improve the utilization rate of light, reduces energy consumption,
Add display brightness.Further, firefly phenomenon can also be significantly improved.
The display device can be：Electronic Paper, mobile phone, tablet computer, television set, display, laptop, number
Any product or component with display function such as photo frame, navigator.
In technical scheme, LED light bar includes being arranged on the light path adjustment cover of the light emission side of LED luminescence units,
The light path adjustment cover includes collective optics, and the light for being sent to LED luminescence units converges, and is shone with reducing LED
The light emitting angle of unit.For the LED light bar when being assembled into side-edge type backlight, smaller light emitting angle causes more light
It can inject in light guide plate, so as to reduce light efficiency loss when light injects light guide plate, improve light utilization, reduce energy consumption,
Increase the display brightness of product.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these improve and replace
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of LED light bar, including multiple LED luminescence units matrix and setting on the matrix, which is characterized in that
The light emission side of LED luminescence units is provided with light path adjustment cover；
The light path adjustment cover includes collective optics, and the light for being sent to LED luminescence units converges；
The LED light bar includes multiple light paths adjustment covers, and the light path adjustment cover is fixed on the matrix, and with it is described
The position of LED luminescence units corresponds；
The light that each LED luminescence units are sent is converged by corresponding independent light path adjustment cover；
The light path adjustment cover further includes diffused component, and the light that the LED luminescence units are sent is by the diffused component
After diffusion, converged using the collective optics.
2. LED light bar according to claim 1, which is characterized in that the collective optics includes first substrate and is arranged on
Condensing film on the first substrate, the diffused component include second substrate and the diffusion being arranged on the second substrate
Film, the diffusion barrier are located at one side of the second substrate towards first substrate, and it is remote that the condensing film is located at the first substrate
One side from second substrate.
3. LED light bar according to claim 2, which is characterized in that pass through light between the first substrate and second substrate
Learn glue fixed bonding.
4. LED light bar according to claim 2, which is characterized in that the surface of the condensing film has the rib of convergence light
Mirror structure.
5. LED light bar according to claim 1, which is characterized in that the shape of the light path adjustment cover is Loadings On Hemispherical Shell, is covered
It is located at the outside of the LED luminescence units.
6. LED light bar according to claim 5, which is characterized in that the end face of the light path adjustment cover has towards away from ball
First flange of heart direction extension, the position that first flange contact with described matrix with the first via, described matrix and
The corresponding position of first via is provided with the second via；
The LED light bar further includes：
Connecting pin, the connecting pin include cylinder, be arranged on described cylinder one end for locking the second flange and be arranged on
The cylinder other end for fixed pin hole, the cylinder passes through the first via and the second via, first flange and
Matrix is fixed between second flange and pin hole, fixed on the matrix and described so as to which the light path is adjusted cover
Spacing between second flange and pin hole is more than the sum of thickness of first flange and matrix.
7. LED light bar according to claim 6, which is characterized in that the material of the connecting pin is metal.
8. a kind of backlight, including backboard and the lamp bar being arranged on the backboard and light guide plate, the light guide plate includes outgoing
Face and the plane of incidence adjacent with the exit facet, the lamp bar are set close to the plane of incidence of the light guide plate, which is characterized in that institute
Lamp bar is stated as claim 1-7 any one of them LED light bars.
9. a kind of display device provides the backlight of light including display panel and for the display panel, which is characterized in that institute
Backlight is stated as the backlight described in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224997.3A CN104776344B (en) | 2015-05-05 | 2015-05-05 | LED light bar, backlight and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224997.3A CN104776344B (en) | 2015-05-05 | 2015-05-05 | LED light bar, backlight and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104776344A CN104776344A (en) | 2015-07-15 |
| CN104776344B true CN104776344B (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510224997.3A Expired - Fee Related CN104776344B (en) | 2015-05-05 | 2015-05-05 | LED light bar, backlight and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104776344B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913227A (en) * | 2015-06-11 | 2015-09-16 | 艾而丹(漳州)光电科技有限公司 | Three dimensional (3D) luminous automatic temperature control light emitting diode (LED) soft lamp strip |
| CN107136573A (en) * | 2017-05-12 | 2017-09-08 | 广东思格雷电子科技股份有限公司 | The electronic cigarette of light guide plate and application light guide plate |
| CN109061942B (en) * | 2018-08-15 | 2021-03-23 | Tcl华星光电技术有限公司 | Side-in backlight module and display device |
| CN110488532A (en) * | 2019-07-09 | 2019-11-22 | 安徽捷鑫光电科技有限公司 | A kind of encapsulating structure of liquid crystal display LED light bar |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3261928B2 (en) * | 1995-05-22 | 2002-03-04 | 松下電器産業株式会社 | Liquid crystal unit floodlight |
| US20120268656A1 (en) * | 2009-12-28 | 2012-10-25 | Sharp Kabushiki Kaisha | Lighting device, display device and television receiver |
| CN104279462B (en) * | 2014-09-18 | 2017-02-01 | 合肥鑫晟光电科技有限公司 | Backlight source and display device |
| CN104503138A (en) * | 2014-12-31 | 2015-04-08 | 东莞市亚星半导体有限公司 | Liquid crystal display screen with adjustable incident light |
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| Publication number | Publication date |
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| CN104776344A (en) | 2015-07-15 |
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