CN104421754A - LED (Light Emitting Diode) light source and backlight source and liquid crystal display comprising same - Google Patents
LED (Light Emitting Diode) light source and backlight source and liquid crystal display comprising same Download PDFInfo
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- CN104421754A CN104421754A CN201310379357.0A CN201310379357A CN104421754A CN 104421754 A CN104421754 A CN 104421754A CN 201310379357 A CN201310379357 A CN 201310379357A CN 104421754 A CN104421754 A CN 104421754A
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- Prior art keywords
- guide plate
- light guide
- light source
- composite membrane
- quantum
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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
- G02F1/133603—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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
-
- 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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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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
An embodiment of the invention discloses an LED (Light Emitting Diode) light source and a backlight source and a liquid crystal display comprising the same. The LED light source comprises a reflective sheet, a light guide plate, a plurality of blue LED light sources and a composite membrane; the light guide plate is arranged on the surface of the reflective sheet; the plurality of blue LED light sources are arranged on one side of the reflective sheet and the light guide plate; the composite membrane is arranged on one side of the light guide plate, wherein the side of the light guide plate is deviated from the reflective sheet; the composite membrane completely covers the light guide plate; the composite membrane comprises a first basement membrane, a quantum dot structure and a second basement membrane, wherein the quantum dot structure is arranged on the surface of the first basement membrane and the second basement membrane is arranged on the surface of the quantum dot structure; the quantum dot structure comprises red quantum dots and green quantum dots and accordingly the blue light emitted from the plurality of blue LED light sources pass through the quantum dot structure which is arranged in the composite membrane after being fully mixed through the light guide plate to form the white light under the action of the red quantum dots and the green quantum dots and accordingly the color consistency of the light produced by the LED light source.
Description
Technical field
The present invention relates to illumination manufacturing technology field, particularly relate to a kind of LED light source and comprise backlight, the liquid crystal display of this LED light source.
Background technology
Backlight is positioned at liquid crystal display a kind of light source behind, and its illumination effect will directly have influence on the visual effect of liquid crystal display device module.As shown in Figure 1, backlight of the prior art comprises: reflector plate 01; Be arranged at the light guide plate 02 on described reflector plate 01 surface; Multiple White LED light source 03 being arranged at described reflector plate 01 and described light guide plate 02 side, described White LED light source 03 comprises: wiring board 030, be arranged at described wiring board 030 surface blue LED die 031 and cover described blue LED die 031 surface fluorescence powder 032; Be arranged at the diffusion barrier 04 that described light guide plate 02 deviates from described reflector plate 01 side.Wherein, described fluorescent material 032 comprises red fluorescence powder and green emitting phosphor, when described backlight is used for liquid crystal display, the blue light that described blue LED die 031 sends, described fluorescent material 032 is excited to produce blue complementary light, form white light after both mixing, penetrate, as the backlight of liquid crystal display through described light guide plate 02 and described diffusion barrier 04 successively.But inventor studies discovery, the colour consistency of the white light that above-mentioned backlight produces is poor.
Summary of the invention
For solving the problems of the technologies described above, embodiments provide a kind of LED light source, to improve the colour consistency of the white light that this LED light source produces.
For solving the problem, embodiments provide following technical scheme:
A kind of LED light source, comprising:
Reflector plate;
Be arranged at the light guide plate on described reflector plate surface;
Multiple blue led light source being arranged at described reflector plate and described light guide plate side;
Be arranged at the composite membrane that described light guide plate deviates from described reflector plate side, described composite membrane covers described light guide plate completely;
Wherein, described composite membrane comprises: the first basement membrane, is arranged at the quantum-dot structure of described first membrane surface, is arranged at second basement membrane on described quantum-dot structure surface, and described quantum-dot structure comprises red quantum point and green quantum dot.
Preferably, described first basement membrane is PETG film; Second basement membrane is PETG film.
Preferably, the thickness of described composite membrane is 210 μm.
Preferably, the thickness of quantum-dot structure is 100 μm.
A kind of backlight comprising LED light source described in above-mentioned any one.
A kind of liquid crystal display, the backlight of described liquid crystal display is above-mentioned backlight.
Compared with prior art, technique scheme has the following advantages:
The technical scheme that the embodiment of the present invention provides, comprise the blue led light source being arranged at described reflector plate and described light guide plate side, be arranged at the composite membrane that described light guide plate deviates from described reflector plate side, described composite membrane covers described light guide plate completely, wherein, described composite membrane is by the first basement membrane, quantum-dot structure and the second basement membrane are formed, and described quantum-dot structure comprises red quantum point and green quantum dot, thus make the blue ray that different blue led light source sends, first through described light guide plate, the fully rear injection of mixing in described light guide plate, quantum-dot structure again in composite membrane, under the effect of red quantum point and green quantum dot, form white light, improve described LED light source produce the colour consistency of light.
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 is the structural representation of backlight in prior art;
The structural representation of the LED light source that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Just as described in the background section, in prior art, the colour consistency of the white light that backlight produces is poor.
Inventor studies discovery, this is that the backlight opened due to prior art generally includes multiple White LED light source 03, include in each White LED light source 03: wiring board 030, blue LED die 031 and the fluorescent material 032 covering described blue LED die 031 surface, described fluorescent material 032 comprises red fluorescence powder and green emitting phosphor, and the light that blue LED die 031 sends needs could produce white light after fluorescent material 032, but, fluorescent material 032 of the prior art only covers the surface of described blue LED die 031, cause the light that different blue LED die 031 is launched, after fluorescent material 032, the uniformity of the white light formed is poor.
In view of this, embodiments provide a kind of LED light source, comprising:
Reflector plate;
Multiple blue led light source being arranged on described reflector plate and described light guide plate side;
Be arranged at the composite membrane that described light guide plate deviates from described reflector plate side, described composite membrane covers described light guide plate completely;
Wherein, described composite membrane comprises: the first basement membrane, is arranged at the quantum-dot structure of described first membrane surface, is arranged at second basement membrane on described quantum-dot structure surface, and described quantum-dot structure comprises red quantum point and green quantum dot.
Accordingly, the embodiment of the present invention additionally provides a kind of liquid crystal display, and the backlight of described liquid crystal display comprises above-mentioned LED light source.
In the technical scheme that the embodiment of the present invention provides, the blue ray that different blue led light source sends, first through described light guide plate, the fully rear injection of mixing in described light guide plate, quantum-dot structure again in described composite membrane, under the effect of red quantum point and green quantum dot, forms white light, penetrate from described composite membrane, improve described backlight emergent ray consistency of colour.
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Set forth detail in the following description so that fully understand the present invention.But the present invention can be different from alternate manner described here to implement with multiple, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention.Therefore the present invention is not by the restriction of following public concrete enforcement.
As shown in Figure 2, embodiments provide a kind of LED light source, comprising:
Reflector plate 1;
Be arranged at the light guide plate 2 on described reflector plate 1 surface;
Multiple blue led light source 4 being arranged at described reflector plate 1 and described light guide plate 2 side, described blue led light source comprises wiring board and is arranged on the blue LED die of described PCB surface, and described wiring board is electrically connected with described blue LED die;
Be arranged at the composite membrane 3 that described light guide plate 2 deviates from described reflector plate 1 side, described composite membrane 3 covers described light guide plate 2 completely;
Wherein, described composite membrane 3 comprises: the first basement membrane 301, be arranged at the quantum-dot structure 302 on described first basement membrane 301 surface, be arranged at second basement membrane 303 on described quantum-dot structure 302 surface, and described quantum-dot structure 302 comprise red quantum point and green quantum dot.
In one embodiment of the invention, described first basement membrane 301 is plastic foil, is preferably PETG film, i.e. PET; Described second basement membrane 303 is also plastic foil, is preferably PETG film, i.e. PET.In yet another embodiment of the present invention, the thickness of described composite membrane 3 is preferably 210 μm, preferred, and the thickness of wherein said quantum-dot structure 302 is 100 μm, but the present invention does not limit this, is determined on a case-by-case basis.
In the LED light source provided in the embodiment of the present invention, described blue led light source 4 is arranged at described reflector plate 1 surface, and be positioned at the side of described light guide plate 2, and described composite membrane 3 is arranged at the side that described light guide plate 2 deviates from described reflector plate 1, thus make the blue ray that described blue led light source 4 sends, first can inject described composite membrane 3 again after described light guide plate, and then the blue ray making described blue led light source send is before injecting described composite membrane 3, can fully mix, and then inject described composite membrane 3, and in described quantum-dot structure 302 red quantum point and green quantum dot effect under, form white light, penetrate from described composite membrane 3, improve the colour consistency of described LED light source.
It should be noted that, in one embodiment of the invention, in order to improve described LED light source consistency of colour further, in the quantum-dot structure 302 of described composite membrane 3, red quantum point and green quantum dot are uniformly distributed.
Accordingly, the embodiment of the present invention additionally provides a kind of liquid crystal display and backlight thereof, and described backlight comprises the LED light source that above-described embodiment provides, and to improve the NTSC of liquid crystal display, promotes consistency of colour.Wherein, NTSC (National Television Standards Committee) is that display industry is checked colors a kind of method for expressing of color saturation degree, typically refer in CIE two dimension colour mixture collection of illustrative plates, red, the green and blue triangle area of three primary colours composition and the ratio of a standard value, this ratio is higher, then display color is more bright-coloured.
In one embodiment of the invention, described backlight comprises: reflector plate 1; Be arranged at the light guide plate 2 on described reflector plate 1 surface; Multiple blue led light source 4 being arranged at described reflector plate 1 and described light guide plate 2 side; Be arranged at the composite membrane 3 that described light guide plate 2 deviates from described reflector plate 1 side, described composite membrane 3 covers described light guide plate completely; Wherein, described composite membrane 3 comprises: the first basement membrane 301, be arranged at the quantum-dot structure 302 on described first basement membrane 301 surface, be arranged at second basement membrane 303 on described quantum-dot structure 302 surface, and described quantum-dot structure 302 comprise red quantum point and green quantum dot.In this embodiment, described composite membrane 3 not only can improve the colour consistency of described backlight, can also substitute diffusion barrier of the prior art, simplifies the structure of described backlight.In another embodiment of the present invention, described backlight also can comprise diffusion barrier, and to improve the uniformity of described backlight emergent ray further, the present invention does not limit this.
In sum, the LED light source that the embodiment of the present invention provides and comprise the backlight of this LED light source, liquid crystal display, include multiple blue led light source 4 being arranged at reflector plate 1 and described light guide plate 2 side, be arranged at the composite membrane 3 that described light guide plate 2 deviates from described reflector plate 1 side, described composite membrane 3 covers described light guide plate completely, wherein, described composite membrane 3 is by the first basement membrane 301, quantum-dot structure 302 and the second basement membrane 303 are formed, and described quantum-dot structure 302 comprises red quantum point and green quantum dot, thus the blue ray making described multiple blue led light source 4 send is after described light guide plate 2 fully mixing, quantum-dot structure 302 again in described composite membrane 3, under the effect of red quantum point and green quantum dot, form white light, improve described LED light source produce the colour consistency of light.
In this description, various piece adopts the mode of going forward one by one to describe, and what each some importance illustrated is the difference with other parts, between various piece identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a LED light source, is characterized in that, comprising:
Reflector plate;
Be arranged at the light guide plate on described reflector plate surface;
Multiple blue led light source being arranged at described reflector plate and described light guide plate side;
Be arranged at the composite membrane that described light guide plate deviates from described reflector plate side, described composite membrane covers described light guide plate completely;
Wherein, described composite membrane comprises: the first basement membrane, is arranged at the quantum-dot structure of described first membrane surface, is arranged at second basement membrane on described quantum-dot structure surface, and described quantum-dot structure comprises red quantum point and green quantum dot.
2. LED light source according to claim 1, is characterized in that, described first basement membrane is PETG film; Second basement membrane is PETG film.
3. backlight according to claim 2, is characterized in that, the thickness of described composite membrane is 210 μm.
4. LED backlight according to claim 3, it is characterized in that, the thickness of quantum-dot structure is 100 μm.
5. one kind comprises the backlight of LED light source described in any one of claim 1-4.
6. a liquid crystal display, is characterized in that, the backlight of described liquid crystal display is backlight according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379357.0A CN104421754A (en) | 2013-08-27 | 2013-08-27 | LED (Light Emitting Diode) light source and backlight source and liquid crystal display comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379357.0A CN104421754A (en) | 2013-08-27 | 2013-08-27 | LED (Light Emitting Diode) light source and backlight source and liquid crystal display comprising same |
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| Publication Number | Publication Date |
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| CN104421754A true CN104421754A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310379357.0A Pending CN104421754A (en) | 2013-08-27 | 2013-08-27 | LED (Light Emitting Diode) light source and backlight source and liquid crystal display comprising same |
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| CN (1) | CN104421754A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763949A (en) * | 2015-04-28 | 2015-07-08 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN104930403A (en) * | 2015-06-09 | 2015-09-23 | 京东方科技集团股份有限公司 | Quantum dot backlight source structure and display device |
| CN105652516A (en) * | 2016-01-04 | 2016-06-08 | 合肥京东方显示光源有限公司 | Lateral entrance type backlight module and making method and display device thereof |
| CN106054446A (en) * | 2016-03-09 | 2016-10-26 | 友达光电股份有限公司 | Direct type light emitting device and display |
| WO2018051199A1 (en) * | 2016-09-13 | 2018-03-22 | Efun Technology Co., Ltd. | Quantum structure light-emitting module |
| CN108071948A (en) * | 2016-11-15 | 2018-05-25 | 迎辉科技股份有限公司 | Quantum structure light emitting module |
| CN108072999A (en) * | 2016-11-15 | 2018-05-25 | 迎辉科技股份有限公司 | Quantum structure light emitting module |
| CN108303823A (en) * | 2018-01-25 | 2018-07-20 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN113219725A (en) * | 2021-04-26 | 2021-08-06 | 北海惠科光电技术有限公司 | Display device and display terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104763949A (en) * | 2015-04-28 | 2015-07-08 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN104930403A (en) * | 2015-06-09 | 2015-09-23 | 京东方科技集团股份有限公司 | Quantum dot backlight source structure and display device |
| CN105652516A (en) * | 2016-01-04 | 2016-06-08 | 合肥京东方显示光源有限公司 | Lateral entrance type backlight module and making method and display device thereof |
| CN106054446A (en) * | 2016-03-09 | 2016-10-26 | 友达光电股份有限公司 | Direct type light emitting device and display |
| WO2018051199A1 (en) * | 2016-09-13 | 2018-03-22 | Efun Technology Co., Ltd. | Quantum structure light-emitting module |
| CN108071948A (en) * | 2016-11-15 | 2018-05-25 | 迎辉科技股份有限公司 | Quantum structure light emitting module |
| CN108072999A (en) * | 2016-11-15 | 2018-05-25 | 迎辉科技股份有限公司 | Quantum structure light emitting module |
| CN108303823A (en) * | 2018-01-25 | 2018-07-20 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| WO2019144478A1 (en) * | 2018-01-25 | 2019-08-01 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN113219725A (en) * | 2021-04-26 | 2021-08-06 | 北海惠科光电技术有限公司 | Display device and display terminal |
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