CN104776344A - LED lamp bar, backlight and display device - Google Patents
LED lamp bar, backlight and display device Download PDFInfo
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- CN104776344A CN104776344A CN201510224997.3A CN201510224997A CN104776344A CN 104776344 A CN104776344 A CN 104776344A CN 201510224997 A CN201510224997 A CN 201510224997A CN 104776344 A CN104776344 A CN 104776344A
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- 238000004020 luminiscence type Methods 0.000 claims description 59
- 239000000758 substrate Substances 0.000 claims description 53
- 239000011159 matrix material Substances 0.000 claims description 34
- 238000009792 diffusion process Methods 0.000 claims description 24
- 230000004888 barrier function Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 7
- 238000011068 loading method Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000010408 film Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 6
- 241000254158 Lampyridae Species 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000012788 optical film Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000003854 Surface Print Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011521 glass 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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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
- G02F1/133606—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 invention relates to the technical field of display and discloses an LED lamp bar, a backlight and a display device. The lamp bar comprises a light path adjustment cover arranged at the light outlet side of an LED light emitting unit, and the light path adjustment cover comprises a light gathering element used for gathering light rays emitted by the LED light emitting unit to reduce the light emitting angle of the LED light emitting unit. When the LED lamp bar is assembled to form a side-entering backlight, a smaller light emitting angle enables more light rays to shoot into a light guide plate, therefore, the lighting effect loss caused when the light rays shoot into the light guide plate is reduced, the light ray utilization ratio is improved, the energy consumption is reduced, and the product display brightness is improved.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of LED lamp bar, backlight and display unit.
Background technology
Because liquid crystal itself is not luminous, in the various liquid crystal display such as liquid crystal display, LCD TV (Liquid Crystal Display, hereinafter referred to as " LCD "), all need to rely on outside backlight to realize display.Backlight is divided into side entering type and straight-down negative two kinds according to distributing position, and the side-edge type backlight advantage that luminescent device number is few needed for it, cost is low, thickness is thin and being widely used in the LCD of small-medium size.
Shown in composition graphs 1, side-edge type backlight comprises lamp bar 1, backboard 3 and is successively set on reflector plate 4, light guide plate 2 and the optical film material 5 on backboard 3, and lamp bar 1 is arranged near the side of light guide plate 2.Also comprise the glue frame 7 for lightguide plate fixing 2 and optical film material 5.When assembling display unit, display floater 6 is placed on glue frame 7, display floater 6 and backlight is fitted together by front frame 8.The effect of light guide plate 2 is imported by the light of dipped beam end and conducts to distance light end, the lower surface that light guide plate 2 is relative with exit facet is also printed with site, makes whole exiting surface uniform light, forming surface light source, be supplied to display floater 6, for display.
At present, lamp bar 1 is generally light emitting diode (Light Emitting Diode, hereinafter referred to as " LED ") lamp bar, comprises multiple LED unit 11.LED unit 11 has that development properties is good, long service life, without advantages such as mercury environmental protection.But, LED unit 11 is linear light sorurce, lighting angle is 120 degree, light has light efficiency loss to a certain degree when injecting light guide plate 2, as shown in Figure 2, especially light guide plate 2 is gradually toward slimming development, when the package dimension sizableness of the thickness of light guide plate 2 and LED unit 11, light efficiency loss is especially serious, reaches 5% ~ 10%.
Summary of the invention
The invention provides a kind of lamp bar, backlight and display unit, the light efficiency when light in order to solve side-edge type backlight enters light guide plate loses serious problem.
For solving the problems of the technologies described above, in the embodiment of the present invention, provide a kind of LED lamp bar, the multiple LED luminescence units comprising matrix and arrange on the matrix, the light emission side of LED luminescence unit is provided with light path adjustment cover;
Described light path adjustment cover comprises collective optics, converges for the light sent LED luminescence unit.
Lamp bar as above, preferably, described light path adjustment cover also comprises diffused component, and the light that described LED luminescence unit sends after the diffusion of described diffused component, then converges through described collective optics.
Lamp bar as above, preferably, described collective optics comprises first substrate and is arranged on the condensing film on described first substrate, described diffused component comprises second substrate and is arranged on the diffusion barrier on described second substrate, described diffusion barrier is positioned at the side of described second substrate towards first substrate, and described condensing film is positioned at the side of described first substrate away from second substrate.
Lamp bar as above, preferably, by optical cement fixed bonding between described first substrate and second substrate.
Lamp bar as above, preferably, the surface of described condensing film has the prism structure converging light.
Lamp bar as above, preferably, described LED lamp bar comprises multiple described light path adjustment cover, the position one_to_one corresponding of described light path adjustment cover and described LED luminescence unit.
Lamp bar as above, preferably, described light path adjustment cover is fixed on the matrix of described LED lamp bar.
Lamp bar as above, preferably, the shape of described light path adjustment cover is Loadings On Hemispherical Shell, is located at the outside of described LED luminescence unit.
Lamp bar as above, preferably, the end face of described light path adjustment cover has the first flange towards extending away from centre of sphere direction, and the position of described first flange and described substrate contact has the first via hole, and the position that described matrix is corresponding with described first via hole is provided with the second via hole;
Described LED lamp bar also comprises:
Connecting pin, described connecting pin comprises cylinder, be arranged on second flange for locking of described cylinder one end and be arranged on the described cylinder other end for fixing pin-and-hole, described cylinder is through the first via hole and the second via hole, described first flange and matrix are fixed between described second flange and pin-and-hole, thus by fixing on the matrix for described light path adjustment cover, and the spacing between described second flange and pin-and-hole is greater than the thickness sum of described first flange and matrix.
Lamp bar as above, preferably, the material of described connecting pin is metal.
A kind of backlight is also provided in the embodiment of the present invention, the lamp bar comprising backboard and be arranged on described backboard and light guide plate, described light guide plate comprises exit facet and the plane of incidence adjacent with described exit facet, described lamp bar is arranged near the plane of incidence of described light guide plate, and described lamp bar is LED lamp bar as above.
Also provide a kind of display unit in the embodiment of the present invention, comprise display floater and provide the backlight of light for described display floater, described backlight is backlight as above.
The beneficial effect of technique scheme of the present invention is as follows:
In technique scheme, LED lamp bar comprises the light path adjustment cover of the light emission side being arranged on LED luminescence unit, and described light path adjustment cover comprises collective optics, converges, to reduce the lighting angle of LED luminescence unit for the light sent LED luminescence unit.Described LED lamp bar is when being assembled into side-edge type backlight, and less lighting angle makes more light to inject in light guide plate, thus reduces light efficiency loss when light injects light guide plate, improves light utilization, reduces energy consumption, increase the display brightness of product.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 represents the partial structurtes schematic diagram of display unit;
Fig. 2 represents the index path of side-edge type backlight in 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 structural representation of lamp bar in the embodiment of the present invention;
Fig. 7 represents the close-up schematic view at dotted line frame place in Fig. 6.
Detailed description of the invention
In lcd technology, need backlight to provide the light needed for display.For side-edge type backlight, first the light that its lamp bar sends enter light guide plate, transfers to distance light end by light guide plate, and reflect site at the lower surface printing light that light guide plate is relative with exit facet, diffuse reflection is carried out to light, makes whole exiting surface uniform light, forming surface light source.
The invention provides a kind of lamp bar and backlight, the light sent in order to improve lamp bar injects light efficiency during light guide plate.Multiple LED luminescence units that described lamp bar comprises matrix and arranges on the matrix, are provided with light path adjustment cover in the light emission side of LED luminescence unit.Described light path adjustment cover comprises collective optics, converges, to reduce the lighting angle of LED luminescence unit for the light sent LED luminescence unit.After being assembled into backlight, be specially side-edge type backlight, the light that LED luminescence unit sends is after the convergence of described collective optics, penetrate with less lighting angle, when light guide plate is certain, more light can be injected in light guide plate, thus reduce light efficiency loss when light injects light guide plate, improve light utilization, reduce energy consumption.
Technical scheme of the present invention is particularly useful for the backlight using slimming light guide plate, and the effect reducing light efficiency loss is more remarkable.
In prior art, side-edge type backlight is divided into again single side entering type and two side entering type.For single side-edge type backlight, only arrange lamp bar in the side of backboard, that is, light guide plate only has a plane of incidence.For two side-edge type backlight, arrange lamp bar in the relative both sides of backboard, that is, light guide plate has two relative planes of incidence.
Side-edge type backlight in the present invention can be single side-edge type backlight, also can be two side-edge type backlights.
It should be noted that, in technical scheme of the present invention, the luminescence unit of lamp bar can be also other linear light sorurces, is not limited to the LED luminescence unit in the present invention.
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Shown in composition graphs 3 and Fig. 4, multiple LED luminescence units 11 that the LED lamp bar in the embodiment of the present invention comprises matrix 10 and is arranged on matrix 10, matrix 10 are provided with the circuit board (not shown) of driving LED luminescence unit 11.The light emission side of LED luminescence unit 11 is provided with light path adjustment cover 12, and light path adjustment cover 12 comprises collective optics 121, converges, to reduce the lighting angle of LED luminescence unit 11 for the light sent LED luminescence unit 11.
LED lamp bar in the embodiment of the present invention is after being assembled into backlight, be specially side-edge type backlight, the setting of collective optics 121, the light that LED luminescence unit 11 is sent injects (shown in comparison diagram 2 and Fig. 5) in light guide plate 2 with less angle, thus the light efficiency loss reduced when light injects light guide plate 2, improve light utilization, reduce energy consumption.
Wherein, the structure of collective optics 121 can be: the condensing film 1211 comprising first substrate 100 and be arranged on first substrate 100.First substrate 100 is transparency carrier, as: glass substrate, quartz base plate, organic resin substrate, for condensing film 1211 provides supporting body.Condensing film 1211 plays the effect of converging light.
In prior art, the optical element that can converge light has a lot, as: two dielectric layers (first substrate 100 is different with the refractive index of condensing film 1211) that convex lens, prism or refractive index are different.
The surface of the condensing film 1211 in the embodiment of the present invention has the prism structure converging light.
Specifically light path can be adjusted cover 12 to be fixed on the matrix 10 of LED lamp bar, be convenient to the assembling of light path adjustment cover 12.
The plane of incidence preferably arranging the light path adjustment exit facet of cover 12 and light guide plate 2 is almost parallel, reentering after the convergence of the light that can lamp bar 1 effectively must be made to send by collective optics 121 is mapped in light guide plate 2, improve the utilization rate of light, thus the brightness of backlight can be improved.
LED lamp bar in the embodiment of the present invention can comprise multiple light path adjustment cover 12, and the position one_to_one corresponding of light path adjustment cover 12 and LED luminescence unit 11 is set, as shown in Figure 3, thus the light that sends of each LED luminescence unit 11 is all converged by independently light path adjustment cover 12, reduce the size of light path adjustment cover 12, thus the light path adjustment cover 12 reducing to increase is on the impact of the spacing between LED luminescence unit 11 and light guide plate 2.Meanwhile, the structure of light path adjustment cover 12 can also be simplified, be convenient to make.Concrete, light path is adjusted cover 12 and is fixed on the matrix 10 of LED lamp bar, and with the position one_to_one corresponding of LED luminescence unit 11, after the light that LED luminescence unit 11 sends 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, is located at the outside of LED luminescence unit 11.
When the shape of light path adjustment cover 12 is Loadings On Hemispherical Shell, by following structure, light path can be adjusted cover 12 and be fixed on the matrix 10 of LED lamp bar 1:
At the end face of light path adjustment cover 12, the first flange 123 towards extending away from centre of sphere direction is set, as shown in Figure 6, the position that first flange 123 contacts with described matrix 10 has the first via hole, and the position that matrix 10 is corresponding with described first via hole is provided with the second via hole;
With connecting pin 9, light path being adjusted cover 12 is fixed on matrix 10, concrete, connecting pin 9 comprises cylinder 90, be arranged on second flange 91 for locking of cylinder 90 one end and be arranged on cylinder 90 other end for fixing pin-and-hole.Cylinder 90 is through the first via hole on the first flange 123 and the second via hole on matrix 10, latch 92 inserts described pin-and-hole, first flange 123 and matrix 10 are fixed between the second flange 91 and described pin-and-hole, thus light path are adjusted cover 12 and be fixed on the matrix 10 of LED lamp bar 1.
Preferably, the spacing between the second flange 91 and described pin-and-hole is greater than the thickness sum of the first flange 123 and matrix 10, for the first flange 123 expanded by heating provides certain extendable room.
Second flange 91 can be specifically umbrella, is one-way activity.The material of connecting pin 9 is metal, and the heat that can LED luminescence unit 11 must be distributed in time is derived, and avoids the temperature of lamp bar 1 too high.
Certainly, light path adjustment cover 12 version be fixed on matrix 10 is not limited to above-mentioned one, can also be fixed by bolt, the mode such as bonding.The shape of light path adjustment cover 12 is also not limited to Loadings On Hemispherical Shell, can also be pyramid, semielliptical housing etc.
For LED luminescence unit 11, when the characteristic of its linear light sorurce also makes LED luminescence unit 11 nearer apart from the viewing area (AA district) of display floater 6, occur between adjacent LED luminous units 11 light according to less than region formed blanking bar, and the place that light intersects forms optically focused band, namely LED luminescence unit 11 mixed light is uneven, and so bright dark alternatively distributed phenomenon is focal point phenomenon (also referred to as firefly phenomenon).
In order to solve the problems of the technologies described above, light path adjustment cover 12 is set and also comprise diffused component 122, as shown in Figure 4.The light that LED luminescence unit 11 sends after the diffusion of diffused component 122, then converges through collective optics 121, shown in composition graphs 6 and Fig. 7.The light of the fixed-direction (lighting angles of 120 °) that LED luminescence unit 11 can be sent due to diffused component 122 is broken up to all directions, increase the lighting angle of LED luminescence unit 11, to make between LED luminescence unit 11 light originally according to less than no light zone also have light to inject, to the effect of having greatly improved of firefly phenomenon.
Wherein, the structure of diffused component 122 can be: the diffusion barrier 1221 comprising second substrate 200 and be arranged on second substrate 200, shown in composition graphs 4.Second substrate 200 is transparency carrier, as: glass substrate, quartz base plate, organic resin substrate, for diffusion barrier 1221 provides supporting body.
Concrete, can arrange diffusion particle on the surface of diffusion barrier 1221, the light that LED luminescence unit 11 sends is broken up to all directions by diffusion particle, increases the lighting angle of LED luminescence unit 11, plays the effect of spreading light.
In a concrete embodiment, as shown in Figure 4, light path adjustment cover 12 comprises collective optics 121 and diffused component 122.The condensing film 1211 that collective optics 121 comprises first substrate 100 and is arranged on first substrate 100, the surface of condensing film 1211 has the prism structure converging light.The diffusion barrier 1221 that diffused component 122 comprises second substrate 200 and is arranged on second substrate 200, the surface of diffusion barrier 1221 is provided with diffusion particle.
Wherein, diffusion barrier 1221 is positioned at the side of second substrate 200 towards first substrate 100, and condensing film 1211 is positioned at the side of first substrate 100 away from second substrate 200.
In this embodiment, preferably, by optical cement 13 fixed bonding between first substrate 100 and second substrate 200, light path is made to adjust the as a whole structure of cover 12.
As one preferred embodiment, LED lamp bar 1 comprises multiple light path adjustment cover 12, and the position one_to_one corresponding of light path adjustment cover 12 and LED luminescence unit 11, and be fixed on the matrix 10 of LED lamp bar.Each light path adjustment cover 12 comprises collective optics 121 and diffused component 122, the exit facet of light path adjustment cover 12 and the plane of incidence of light guide plate 2 almost parallel.The light that LED luminescence unit 11 sends after the diffusion of diffused component 122, then converges through collective optics 121, injects in light guide plate 2.Arranging of diffused component 122 can obviously improve firefly phenomenon, and the arranging of collective optics 121 can improve light efficiency when light that LED luminescence unit 11 sends injects light guide plate 2, improves the utilization rate of light, increases the brightness of backlight.
Shown in composition graphs 1, also provide a kind of backlight, be specially side-edge type backlight in the embodiment of the present invention, it comprises backboard 3 and the lamp bar 1 be arranged on backboard 3 and light guide plate 2.Light guide plate 2 comprises exit facet and the plane of incidence adjacent with described exit facet, and lamp bar 1 is arranged near the plane of incidence of light guide plate 2.First the light that lamp bar 1 sends enter light guide plate 2, transfers to distance light end by light guide plate 2, and reflect site at the lower surface printing light that light guide plate 2 is relative with exit facet, diffuse reflection is carried out to light, makes whole exiting surface uniform light, forming surface light source, be supplied to display floater 6, show.
Described lamp bar 1 is the LED lamp bar in the embodiment of the present invention, the light that on it, LED luminescence unit 11 sends converges through collective optics 121, there is less lighting angle, light efficiency when light injects light guide plate 2 can be improved, improve the utilization rate of light, reduce energy consumption, increase the brightness of backlight.
Further, the light path of LED lamp bar 1 adjustment cover 12 also comprises light that diffused component 122, LED luminescence unit 11 sends after the diffusion of diffused component 122, then converges through collective optics 121.The light of the fixed-direction (lighting angles of 120 °) that LED luminescence unit 11 can send by diffused component 122 is broken up to all directions, increase the lighting angle of LED luminescence unit 11, to make between LED luminescence unit 11 light originally according to less than no light zone also have light to inject, to the effect of having greatly improved of firefly phenomenon.
LED lamp bar 1 in the embodiment of the present invention specifically comprises:
Matrix 10;
Be arranged on the multiple LED luminescence units 11 on matrix 10;
Multiple light path adjustment cover 12, is fixed on matrix 10, and with the position one_to_one corresponding of LED luminescence unit 11, light path adjustment cover 12 is positioned at the light emission side of corresponding LED luminescence unit 11;
Light path adjustment cover 12 comprises:
Collective optics 121, the condensing film 1211 comprising first substrate 100 and be arranged on first substrate 100, the surface of condensing film 1211 has the prism structure converging light;
Diffused component 122, the diffusion barrier 1221 comprising second substrate 200 and be arranged on second substrate 200, the surface of diffusion barrier 1221 is provided with the diffusion particle spread light;
By optical cement 13 fixed bonding between first substrate 100 and second substrate 200, diffusion barrier 1221 is positioned at the side of second substrate 200 towards first substrate 100, and condensing film 1211 is positioned at the side of first substrate 100 away from second substrate 200.
The light that LED luminescence unit 11 sends after the diffusion of diffused component 122, then converges through collective optics 121, injection.
Shown in composition graphs 1, the backlight in the embodiment of the present invention comprises:
Backboard 3;
Be arranged on the lamp bar 1 on backboard 3 and light guide plate 2, light guide plate 2 comprises exit facet and the plane of incidence adjacent with described exit facet, the lower surface printing light reflection site (not shown) that light guide plate 2 is relative with exit facet, lamp bar 1 is arranged near the plane of incidence of light guide plate 2;
Lamp bar 1 is above-mentioned LED lamp bar, has less lighting angle, and first the light sent enter light guide plate 2, distance light end is transferred to by light guide plate 2, diffuse reflection is carried out to light in light reflection site on the lower surface that light guide plate 2 is relative with exit facet, makes whole exiting surface uniform light, forming surface light source;
The side that light guide plate 2 is relative with exit facet being provided with sheet emitting 4, for reflecting light, light being penetrated from the exit facet of light guide plate 2;
The side, exit facet place of light guide plate 2 is provided with optical film material 5, comprises brightness enhancement film, diffusion barrier etc., for adjusting light, then penetrating;
Glue frame 7, for lightguide plate fixing 2 and optical film material 5.
As shown in Figure 1, in the embodiment of the present invention, also provide a kind of display unit, comprise display floater 6 and provide the backlight of light for display floater 6.Display floater 6 is placed on the glue frame 7 of backlight.Described display unit also comprises front frame 8, for fixing assembling display floater 6 and backlight.
Described backlight is the backlight in the embodiment of the present invention, thus improves the utilization rate of light, reduces energy consumption, adds display brightness.Further, firefly phenomenon can also significantly be improved.
Described display unit can be: any product or parts with Presentation Function such as Electronic Paper, mobile phone, panel computer, television set, display, notebook computer, DPF, navigator.
In technical scheme of the present invention, LED lamp bar comprises the light path adjustment cover of the light emission side being arranged on LED luminescence unit, described light path adjustment cover comprises collective optics, converges, to reduce the lighting angle of LED luminescence unit for the light sent LED luminescence unit.Described LED lamp bar is when being assembled into side-edge type backlight, and less lighting angle makes more light to inject in light guide plate, thus reduces light efficiency loss when light injects light guide plate, improves light utilization, reduces energy consumption, increase the display brightness of product.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and replacement, these improve and replace and also should be considered as protection scope of the present invention.
Claims (12)
1. a LED lamp bar, the multiple LED luminescence units comprising matrix and arrange on the matrix, is characterized in that, the light emission side of LED luminescence unit is provided with light path adjustment cover;
Described light path adjustment cover comprises collective optics, converges for the light sent LED luminescence unit.
2. LED lamp bar according to claim 1, is characterized in that, described light path adjustment cover also comprises diffused component, and the light that described LED luminescence unit sends after the diffusion of described diffused component, then converges through described collective optics.
3. LED lamp bar according to claim 2, it is characterized in that, described collective optics comprises first substrate and is arranged on the condensing film on described first substrate, described diffused component comprises second substrate and is arranged on the diffusion barrier on described second substrate, described diffusion barrier is positioned at the side of described second substrate towards first substrate, and described condensing film is positioned at the side of described first substrate away from second substrate.
4. LED lamp bar according to claim 3, is characterized in that, by optical cement fixed bonding between described first substrate and second substrate.
5. LED lamp bar according to claim 3, is characterized in that, the surface of described condensing film has the prism structure converging light.
6. the LED lamp bar according to any one of claim 1-5, is characterized in that, described LED lamp bar comprises multiple described light path adjustment cover, the position one_to_one corresponding of described light path adjustment cover and described LED luminescence unit.
7. LED lamp bar according to claim 6, is characterized in that, described light path adjustment cover is fixed on the matrix of described LED lamp bar.
8. LED lamp bar according to claim 7, is characterized in that, the shape of described light path adjustment cover is Loadings On Hemispherical Shell, is located at the outside of described LED luminescence unit.
9. LED lamp bar according to claim 8, it is characterized in that, the end face of described light path adjustment cover has the first flange towards extending away from centre of sphere direction, the position of described first flange and described substrate contact has the first via hole, and the position that described matrix is corresponding with described first via hole is provided with the second via hole;
Described LED lamp bar also comprises:
Connecting pin, described connecting pin comprises cylinder, be arranged on second flange for locking of described cylinder one end and be arranged on the described cylinder other end for fixing pin-and-hole, described cylinder is through the first via hole and the second via hole, described first flange and matrix are fixed between described second flange and pin-and-hole, thus by fixing on the matrix for described light path adjustment cover, and the spacing between described second flange and pin-and-hole is greater than the thickness sum of described first flange and matrix.
10. LED lamp bar according to claim 9, is characterized in that, the material of described connecting pin is metal.
11. 1 kinds of backlights, the lamp bar comprising backboard and be arranged on described backboard and light guide plate, described light guide plate comprises exit facet and the plane of incidence adjacent with described exit facet, described lamp bar is arranged near the plane of incidence of described light guide plate, it is characterized in that, described lamp bar is the LED lamp bar described in any one of claim 1-10.
12. 1 kinds of display unit, comprise display floater and provide the backlight of light for described display floater, it is characterized in that, described backlight is backlight according to claim 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510224997.3A CN104776344B (en) | 2015-05-05 | 2015-05-05 | LED light bar, backlight and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510224997.3A CN104776344B (en) | 2015-05-05 | 2015-05-05 | LED light bar, backlight and display device |
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| CN104776344A true CN104776344A (en) | 2015-07-15 |
| CN104776344B CN104776344B (en) | 2018-05-29 |
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| 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 |
| CN109061942A (en) * | 2018-08-15 | 2018-12-21 | 深圳市华星光电技术有限公司 | Side entrance back 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 |
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| CN104279462A (en) * | 2014-09-18 | 2015-01-14 | 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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| JPH08313907A (en) * | 1995-05-22 | 1996-11-29 | Matsushita Electric Ind Co Ltd | Light projector for liquid crystal unit |
| US20120268656A1 (en) * | 2009-12-28 | 2012-10-25 | Sharp Kabushiki Kaisha | Lighting device, display device and television receiver |
| CN104279462A (en) * | 2014-09-18 | 2015-01-14 | 合肥鑫晟光电科技有限公司 | Backlight source and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN109061942A (en) * | 2018-08-15 | 2018-12-21 | 深圳市华星光电技术有限公司 | Side entrance back module and display device |
| WO2020034275A1 (en) * | 2018-08-15 | 2020-02-20 | 深圳市华星光电技术有限公司 | Edge-type backlight module and display device |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN104776344B (en) | 2018-05-29 |
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