CN104808386A - Light source unit, backlight module and a liquid crystal display - Google Patents
Light source unit, backlight module and a liquid crystal display Download PDFInfo
- Publication number
- CN104808386A CN104808386A CN201510210124.7A CN201510210124A CN104808386A CN 104808386 A CN104808386 A CN 104808386A CN 201510210124 A CN201510210124 A CN 201510210124A CN 104808386 A CN104808386 A CN 104808386A
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- light source
- quantum dot
- light
- backlight module
- liquid crystal
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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
- G02F1/133621—Illuminating devices providing coloured light
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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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
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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
- G02F1/133615—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
- G02F1/133614—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
The invention discloses a light source unit, which comprises a supporting framework, a light source for emitting blue light and a quantum dot film assembly, wherein the supporting framework comprises an encapsulation slot provided with a first surface and a light emitting window, the width of the light emitting window is larger than that of the first surface; the light source for emitting blue light is encapsulated on the first surface by a encapsulating material layer; the quantum dot film assembly comprises a quantum dot film, a first protective film connected to a first side face of the quantum dot film, and a second protective film connected to a second side face of the quantum dot film; the quantum dot film assembly is connected onto the encapsulating material layer in the way that the first protective film faces the direction of the light emitting window; the width of the quantum dot film assembly is not less than that of the light emitting window; the quantum dot film assembly is configured to convert the blue light part emitted by the light source to green light and red light. The invention also discloses a backlight module of the light source unit and a liquid crystal display comprising the backlight module.
Description
Technical field
The present invention relates to your technical field of liquid crystal display, particularly relate to a kind of light source cell, backlight module and liquid crystal display.
Background technology
Liquid crystal display (LCD) has the advantages such as fuselage is thin, low in energy consumption, radiationless, is widely used, such as mobile phone, digital camera, computing machine, television screen etc.Liquid crystal display major part on existing market is backlight liquid crystal display, and comprise liquid crystal panel and backlight module, liquid crystal panel and backlight module are oppositely arranged, and backlight module provides display light source to liquid crystal panel, to make liquid crystal panel show image.Along with the development of society, the quality requirements of user to liquid crystal display display frame is more and more higher, in order to improve the color saturation of picture, by improving the colourity of lamp bar in backlight module, just can the color saturation of improving picture, existing technology is in backlight module, adopt technology of quantum dots to improve colour gamut.
Quantum dot (Quantum Dot, QD) technology, electronics constraint semiconductor nano material structure technology within the specific limits, be made up of the extra small compound crystal of size within the scope of 1 ~ 100nm, in the application of illumination with display field, be utilize its character changing lambda1-wavelength, different size crystalline solid can be utilized to control wavelength.As long as the size of the accurate crystallization control body of energy, accurately can control color, and have color development scope quite widely.In LCD Technology field, quantum dot is widely used, generally that the mode adopting transparent glass tube to encapsulate quantum dot forms quantum bar, or in the materials such as polyethylene terephthalate (Polyethylene terephthalate, PET), form quantum film by quantum dot-doped.
In the backlight module of existing employing quantum bar or quantum film, normally by one independently fixed support quantum bar or quantum film are fixed between light source and light guide plate, the exiting surface of quantum bar or quantum film and light source also has certain distance, and this light loss causing light source to send is larger.
Summary of the invention
In view of the deficiency that prior art exists, the invention provides a kind of light source cell, by the improvement to light source assembly and quantum membrane module unitized construction, decrease light loss, improve the colour gamut of light source.
To achieve these goals, present invention employs following technical scheme:
A kind of light source cell, it comprises:
Support frame, comprises the encapsulation groove with first surface and a light-emitting window, and the width of described light-emitting window is greater than the width of described first surface;
Send the light source of blue light, be packaged on described first surface by an encapsulating material layer;
Quantum dot membrane module, comprises quantum dot film and is connected to the first diaphragm of quantum dot film first side and is connected to the second diaphragm of quantum dot film second side; Wherein, with the direction of described first diaphragm towards described light-emitting window, described quantum dot membrane module is connected on described encapsulating material layer;
Wherein, the width of described quantum dot membrane module is not less than the width of described light-emitting window; Described quantum dot film is configured to the blue light components that described light source sends to be converted to green glow and ruddiness.
Further, at least the first diaphragm or the second diaphragm extend to top and the bottom of described quantum dot film.
Further, by adopting the mode of the first sticking double faced adhesive tape that described first diaphragm is connected to described encapsulating material layer.
Further, by adopting the mode of the second sticking double faced adhesive tape that described second diaphragm is connected to described quantum dot film second side.
Further, described light source is blue-light LED chip.
Present invention also offers a kind of backlight module, it comprises:
Light source cell as above;
Light guide plate, by the incident light from described light source cell towards the liquid crystal panel guiding of placing above in light guide plate.
Further, this backlight module also comprises backboard, reflector plate and optical diaphragm group, and wherein, described reflector plate, light guide plate and optical diaphragm group successively lamination are arranged on described backboard, and described light source cell is arranged at a wherein side of described light guide plate.
Another aspect of the present invention is to provide a kind of liquid crystal display, comprise LCDs and backlight module, described LCDs and described backlight module are oppositely arranged, described backlight module provides display light source to described LCDs, to make described LCDs show image, wherein, described backlight module adopts backlight module as above.
The light source cell provided in the embodiment of the present invention and comprise in the backlight module of this light source cell, quantum dot membrane module is directly packaged on the light-emitting window of light source, quantum dot membrane module and light source share same supporting bracket, simplify the encapsulating structure of light source cell, decrease light loss simultaneously.Adopt the backlight module of this light source cell can obtain better backlight colour gamut, improve display quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the liquid crystal display that the embodiment of the present invention provides.
Fig. 2 is the structural representation of the backlight module that the embodiment of the present invention provides.
Fig. 3 is the structural representation of the light source cell that the embodiment of the present invention provides.
Fig. 4 is the structural representation of the light source cell that another embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be described in detail the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part example, instead of whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to scope.
As shown in Figure 1, present embodiments provide a kind of liquid crystal display, it comprises liquid crystal panel 200 and backlight module 100, described liquid crystal panel 200 is oppositely arranged with described backlight module 100, described backlight module 100 provides display light source to described liquid crystal panel 200, to make described liquid crystal panel 200 show image.
Wherein, as shown in Figure 2, the backlight module 100 in the present embodiment comprises light source cell 1, light guide plate 2, backboard 3, reflector plate 4 and optical diaphragm group 5.Wherein, described reflector plate 4, light guide plate 2 and optical diaphragm group 5 successively lamination are arranged on described backboard 3, and described light source cell 1 is arranged at a wherein side of described light guide plate 2.The light that light source cell 1 sends incides light guide plate 2 from the side, and through the guiding of light guide plate 2, light, from the top injection learning diaphragm group 5, reenters and is mapped to liquid crystal panel 200.
Wherein, in the present embodiment, in light source cell 1, be provided with quantum dot film, to improve the colour gamut of backlight, promote display quality.As shown in Figure 3, light source cell 1 comprises support frame 11, sends the light source 12 of blue light and quantum dot membrane module 14.Wherein, the light source 12 sending blue light is blue-light LED chip.
Particularly, support frame 11 comprises the encapsulation groove 11a with first surface 111 and a light-emitting window 112, and the width of described light-emitting window 112 is greater than the width of described first surface 111.Send the light source 12 of blue light, be packaged on described first surface 111 by an encapsulating material layer 13.Quantum dot membrane module 14 comprises quantum dot film 141 and is connected to the first diaphragm 142 of quantum dot film 141 first side and is connected to the second diaphragm 143 of quantum dot film 141 second side, and the blue light components that described quantum dot film 141 is configured to described light source 12 sends is converted to green glow and ruddiness.Wherein, with the direction of described first diaphragm 142 towards described light-emitting window 112, described quantum dot membrane module 14 is connected on described encapsulating material layer 13.
In the present embodiment; by the mode adopting the first double faced adhesive tape 15 to paste, described first diaphragm 142 is connected to described encapsulating material layer 13; by the mode adopting the second double faced adhesive tape 16 to paste, described second diaphragm 143 is connected to described quantum dot film 141 second side; and the first diaphragm 142 extends to top and the bottom of described quantum dot film 141, the width of quantum dot membrane module 14 equals the width of described light-emitting window 112.
As above the light source cell provided and comprise in the backlight module of this light source cell, quantum dot membrane module is directly packaged on the light-emitting window of light source, quantum dot membrane module and light source share same supporting bracket, simplify the encapsulating structure of light source cell, decrease light loss simultaneously.Adopt the backlight module of this light source cell can obtain better backlight colour gamut, improve display quality.
Usually, owing to cutting precision, the existence of quantum dot instability and bin differences, the quantum dot of quantum dot film edge is easy to oxidation deactivation, and quantum dot film edge certain area coverage was lost efficacy.Therefore in an additional preferred embodiment, as shown in Figure 4, be also by adopting the mode of the first double faced adhesive tape 15 stickup that described first diaphragm 141 is connected to described encapsulating material layer 13 in this embodiment.With previous embodiment unlike, in this embodiment, the width of quantum dot membrane module 14 is greater than the width of light-emitting window 112, and thus, quantum dot film 141 edge is positioned at outside light-emitting window 112 because of oxidation deactivation, does not affect the effect of quantum dot film 141 pairs of light sources.Wherein, the mode that the second diaphragm 143 is still pasted by employing second double faced adhesive tape 16 is connected to described quantum dot film 141 second side.And in order to make the fixing more firm of quantum dot membrane module 14, the second double faced adhesive tape 16 extends to top and the bottom of support frame 11 from the top of quantum dot film 141 and bottom always.In this embodiment, the second diaphragm 143 extends to top and the bottom of described quantum dot film 141.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only the embodiment of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection domain of the application.
Claims (8)
1. a light source cell, is characterized in that, comprising:
Support frame (11), comprise the encapsulation groove (11a) with first surface (111) and a light-emitting window (112), the width of described light-emitting window (112) is greater than the width of described first surface (111);
Send the light source (12) of blue light, be packaged on described first surface (111) by an encapsulating material layer (13);
Quantum dot membrane module (14), comprises quantum dot film (141) and is connected to first diaphragm (142) of quantum dot film (141) first side and is connected to second diaphragm (143) of quantum dot film (141) second side; Wherein, with the direction of described first diaphragm (142) towards described light-emitting window (112), described quantum dot membrane module (14) is connected on described encapsulating material layer (13);
Wherein, the width of described quantum dot membrane module (14) is not less than the width of described light-emitting window (112); The blue light components that described quantum dot film (141) is configured to described light source (12) sends is converted to green glow and ruddiness.
2. light source cell according to claim 1, is characterized in that, at least the first diaphragm (142) or the second diaphragm (143) extend to top and the bottom of described quantum dot film (141).
3. light source cell according to claim 1, is characterized in that, described first diaphragm (142) is connected to described encapsulating material layer (13) by the mode of pasting by adopting the first double faced adhesive tape (15).
4. light source cell according to claim 1, is characterized in that, described second diaphragm (143) is connected to described quantum dot film (141) second side by the mode of pasting by adopting the second double faced adhesive tape (16).
5. light source cell according to claim 1, is characterized in that, described light source (12) is blue-light LED chip.
6. a backlight module, is characterized in that, comprising:
The arbitrary described light source cell (1) of claim 1-5;
Light guide plate (2), by the incident light from described light source cell (1) towards the liquid crystal panel guiding of placing above in light guide plate (2).
7. backlight module according to claim 6, it is characterized in that, this backlight module also comprises backboard (3), reflector plate (4) and optical diaphragm group (5), wherein, described reflector plate (4), light guide plate (2) and optical diaphragm group (5) successively lamination are arranged on described backboard (3), and described light source cell (1) is arranged at a wherein side of described light guide plate (2).
8. a liquid crystal display, comprise liquid crystal panel (200) and backlight module (100), described liquid crystal panel (200) and described backlight module (100) are oppositely arranged, described backlight module (100) provides display light source to described liquid crystal panel (200), to make described liquid crystal panel (200) show image, wherein, described backlight module (100) adopts backlight module as claimed in claims 6 or 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510210124.7A CN104808386B (en) | 2015-04-28 | 2015-04-28 | Light source unit, backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510210124.7A CN104808386B (en) | 2015-04-28 | 2015-04-28 | Light source unit, backlight module and liquid crystal display |
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| Publication Number | Publication Date |
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| CN104808386A true CN104808386A (en) | 2015-07-29 |
| CN104808386B CN104808386B (en) | 2018-05-29 |
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| CN201510210124.7A Active CN104808386B (en) | 2015-04-28 | 2015-04-28 | Light source unit, backlight module and liquid crystal display |
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Cited By (9)
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| CN105717704A (en) * | 2016-04-22 | 2016-06-29 | 深圳市华星光电技术有限公司 | Two-sided display screen and LED light bar thereof |
| CN105911766A (en) * | 2016-06-16 | 2016-08-31 | 青岛海信电器股份有限公司 | Quantum dot light-emitting device, backlight module and liquid crystal display device |
| CN106647025A (en) * | 2016-12-12 | 2017-05-10 | Tcl集团股份有限公司 | Backlight module based on quantum dots and LCD display device |
| CN107102472A (en) * | 2016-11-25 | 2017-08-29 | 惠州市华量半导体有限公司 | Backlight and display device |
| CN108957858A (en) * | 2018-06-12 | 2018-12-07 | 友达光电股份有限公司 | Backlight module |
| CN109001936A (en) * | 2017-06-06 | 2018-12-14 | 群创光电股份有限公司 | Light source module and display equipment |
| US10203547B2 (en) | 2016-06-16 | 2019-02-12 | Hisense Electric Co., Ltd. | Quantum dot light emitting device, backlight module, and liquid crystal display device |
| CN109491143A (en) * | 2018-12-21 | 2019-03-19 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN109521604A (en) * | 2018-12-21 | 2019-03-26 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
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| CN108957858B (en) * | 2018-06-12 | 2021-06-08 | 友达光电股份有限公司 | Backlight module |
| CN109491143A (en) * | 2018-12-21 | 2019-03-19 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN109521604A (en) * | 2018-12-21 | 2019-03-26 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
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| Publication number | Publication date |
|---|---|
| CN104808386B (en) | 2018-05-29 |
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