CN104808386B - Light source unit, backlight module and liquid crystal display - Google Patents
Light source unit, backlight module and liquid crystal display Download PDFInfo
- Publication number
- CN104808386B CN104808386B CN201510210124.7A CN201510210124A CN104808386B CN 104808386 B CN104808386 B CN 104808386B CN 201510210124 A CN201510210124 A CN 201510210124A CN 104808386 B CN104808386 B CN 104808386B
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- light
- quantum dot
- light source
- liquid crystal
- backlight module
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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
-
- 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
-
- 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 kind of light source unit, including：Braced frame, including the encapsulation slot with first surface and a light-emitting window, the width of the light-emitting window is more than the width of the first surface；The light source of blue light is sent, is packaged in by an encapsulating material layer on the first surface；Quantum dot membrane module including quantum dot film and is connected to and the first protective film of quantum dot film first side and is connected to the second protective film of quantum dot film second side；Wherein, the quantum dot membrane module is connected on the encapsulating material layer towards the direction of the light-emitting window with first protective film；Wherein, the width of the quantum dot membrane module is not less than the width of the light-emitting window；The quantum dot film is configured as the blue light components that the light source is sent being converted to green light and feux rouges.Invention additionally discloses using the as above backlight module of light source unit and the liquid crystal display comprising the backlight module.
Description
Technical field
The present invention relates to your technical fields of liquid crystal display, more particularly to a kind of light source unit, backlight module and liquid crystal
Display.
Background technology
Liquid crystal display (LCD) has many advantages, such as that fuselage is thin, low in energy consumption, radiationless, is widely used, such as moves
Mobile phone, digital camera, computer, television screen etc..Liquid crystal display on existing market is largely backlight liquid
Crystal display, including liquid crystal panel and backlight module, liquid crystal panel is oppositely arranged with backlight module, and backlight module, which provides, shows light
Source is to liquid crystal panel, so that liquid crystal panel shows image.With the development of society, user shows liquid crystal display the matter of picture
Amount require it is higher and higher, in order to improve the color saturation of picture, by the colourity for improving lamp bar in backlight module, it is possible to carry
The color saturation of picture is risen, existing technology is to improve colour gamut using technology of quantum dots in backlight module.
Quantum dot (Quantum Dot, QD) technology, is that electronics is strapped in a certain range of semiconductor nano material knot
Structure technology is made of extra small compound crystal of the size in the range of 1~100nm, is profit in illumination and the application of display field
Change the property of lambda1-wavelength with it, wavelength is controlled using different size crystalline solid.As long as it can accurately control crystalline solid
Size, you can accurately control color, and have quite extensive color development scope.In LCD Technology field, quantum dot is
It is widely used, quantum dot is usually formed into quantum item by the way of transparent glass tube encapsulation or mixes quantum dot
It is miscellaneous that quantum film is formed in the materials such as polyethylene terephthalate (Polyethylene terephthalate, PET).
It is existing using in the backlight module of quantum item or quantum film, typically by an independent fixing bracket by quantum item
Or quantum film is fixed between light source and light guide plate, quantum item or the light-emitting surface of quantum film and light source also have a certain distance,
The light loss that this causes light source to send is larger.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of light source unit, by light source assembly and quantum
The improvement of membrane module combining structure, reduces light loss, improves the colour gamut of light source.
To achieve these goals, present invention employs following technical solutions：
A kind of light source unit, including：
Braced frame, including the encapsulation slot with first surface and a light-emitting window, the width of the light-emitting window is more than
The width of the first surface；
The light source of blue light is sent, is packaged in by an encapsulating material layer on the first surface；
Quantum dot membrane module including quantum dot film and is connected to the first protective film and the connection of quantum dot film first side
In the second protective film of quantum dot film second side；It wherein, will with first protective film towards the direction of the light-emitting window
The quantum dot membrane module is connected on the encapsulating material layer；
Wherein, the width of the quantum dot membrane module is not less than the width of the light-emitting window；The quantum dot film by with
It is set to and the blue light components that the light source is sent is converted into green light and feux rouges.
Further, at least the first protective film or the second protective film extend to the top and bottom of the quantum dot film.
Further, first protective film is connected to the package material by using the mode of the first sticking double faced adhesive tape
The bed of material.
Further, second protective film is connected to the quantum dot by using the mode of the second sticking double faced adhesive tape
Film second side.
Further, the light source is blue-light LED chip.
The present invention also provides a kind of backlight module, including：
Light source unit as described above；
Light guide plate guides the incident light from the light source unit towards the liquid crystal panel placed in light guide plate front.
Further, which further includes backboard, reflector plate and optical diaphragm group, wherein, the reflector plate is led
Lamination is arranged on the backboard successively for tabula rasa and optical diaphragm group, and the light source unit is arranged at the light guide plate wherein
One side.
Another aspect of the present invention is to provide a kind of liquid crystal display, including liquid crystal display and backlight module, the liquid
Crystal display screen is oppositely arranged with the backlight module, and the backlight module provides display light source to the liquid crystal display, so that
The liquid crystal display shows image, wherein, the backlight module uses backlight module as described above.
In the light source unit provided in the embodiment of the present invention and the backlight module comprising the light source unit, by quantum dot film
Component is directly packaged on the light-emitting window of light source, and quantum dot membrane module shares same supporting support with light source, simplifies light source
The encapsulating structure of unit, while decrease light loss.Better backlight can be obtained using the backlight module of the light source unit
Colour gamut improves display quality.
Description of the drawings
Fig. 1 is the structure diagram of liquid crystal display provided in an embodiment of the present invention.
Fig. 2 is the structure diagram of backlight module provided in an embodiment of the present invention.
Fig. 3 is the structure diagram of light source unit provided in an embodiment of the present invention.
Fig. 4 is the structure diagram for the light source unit that another embodiment of the present invention provides.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is retouched in detail
It states, it is clear that described embodiment is only a part of example of the present invention rather than whole embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained on the premise of creative work is not made,
Belong to the scope of the present invention.
As shown in Figure 1, a kind of liquid crystal display is present embodiments provided, including liquid crystal panel 200 and backlight module
100, the liquid crystal panel 200 is oppositely arranged with the backlight module 100, and the backlight module 100 provides display light source to institute
Liquid crystal panel 200 is stated, so that the liquid crystal panel 200 shows image.
Wherein, as shown in Fig. 2, backlight module 100 in the present embodiment includes light source unit 1, light guide plate 2, backboard 3, anti-
Penetrate piece 4 and optical diaphragm group 5.Wherein, lamination is arranged on institute successively for the reflector plate 4, light guide plate 2 and optical diaphragm group 5
It states on backboard 3, the light source unit 1 is arranged at the wherein one side of the light guide plate 2.The light that light source unit 1 is sent is from side
Light guide plate 2 is incided into, by the guiding of light guide plate 2, light is projected from the top for learning diaphragm group 5, is again incident on liquid crystal panel
200。
Wherein, in the present embodiment, quantum dot film is provided in light source unit 1, to improve the colour gamut of backlight, promotes display
Quality.As shown in figure 3, light source unit 1 includes braced frame 11, sends the light source 12 of blue light and quantum dot membrane module 14.Its
In, the light source 12 for sending blue light is blue-light LED chip.
Specifically, braced frame 11 includes the encapsulation slot 11a with 111 and one light-emitting window 112 of first surface, it is described go out
The width of light window 112 is more than the width of the first surface 111.The light source 12 of blue light is sent, by 13 envelope of an encapsulating material layer
Loaded on the first surface 111.Quantum dot membrane module 14 includes quantum dot film 141 and is connected to quantum dot film 141 first
First protective film 142 of side and the second protective film 143 for being connected to 141 second side of quantum dot film, the quantum dot film 141
It is configured as the blue light components that the light source 12 is sent being converted to green light and feux rouges.Wherein, with 142 court of the first protective film
To the direction of the light-emitting window 112, the quantum dot membrane module 14 is connected on the encapsulating material layer 13.
In the present embodiment, first protective film 142 is connected to by using the mode that the first double faced adhesive tape 15 is pasted
Second protective film 143 is connected to described by the encapsulating material layer 13 by using the mode that the second double faced adhesive tape 16 is pasted
141 second side of quantum dot film, and the first protective film 142 extends to the top and bottom of the quantum dot film 141, quantum dot
The width of membrane module 14 is equal to the width of the light-emitting window 112.
In light source unit as provided above and the backlight module comprising the light source unit, quantum dot membrane module is directly sealed
On light-emitting window loaded on light source, quantum dot membrane module shares same supporting support with light source, simplifies the encapsulation of light source unit
Structure, while decrease light loss.Better backlight colour gamut can be obtained using the backlight module of the light source unit, improved
Display quality.
Generally, due to precision is cut, and the presence of quantum dot unstability and bin differences, the quantum of quantum dot film edge
Point is easy to oxidation deactivation so that quantum dot film edge certain area coverage fails.Therefore in an additional preferred embodiment, such as scheme
It is also that first protective film 141 is connected to institute by using the mode that the first double faced adhesive tape 15 is pasted shown in 4, in the embodiment
State encapsulating material layer 13.Unlike previous embodiment, in the embodiment, the width of quantum dot membrane module 14 is more than optical window
Mouthfuls 112 width, as a result, 141 edge of quantum dot film be located at outside light-emitting window 112 because of oxidation deactivation, do not influence quantum dot film
The effect of 141 pairs of light sources.Wherein, the second protective film 143 is still connected to institute by using the mode that the second double faced adhesive tape 16 is pasted
State 141 second side of quantum dot film.And in order to make the fixation of quantum dot membrane module 14 more secured, the second double faced adhesive tape 16 is from amount
The top and bottom of son point film 141 extend to the top and bottom of braced frame 11.In this embodiment, the second protective film
143 extend to the top and bottom of the quantum dot film 141.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
Also there are other identical elements in process, method, article or equipment including the element.
The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of the application principle is not departed from, several improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (3)
1. a kind of backlight module, which is characterized in that including light source unit (1), light guide plate (2) backboard (3), reflector plate (4) and
Optical diaphragm group (5), lamination is arranged on the backboard successively for the reflector plate (4), light guide plate (2) and optical diaphragm group (5)
(3) on, the light source unit (1) is arranged at the wherein one side of the light guide plate (2), and the light guide plate (2) will come from described
The incident light of light source unit (1) is guided towards the liquid crystal panel placed in light guide plate (2) front；
Wherein, the light source unit (1) includes：
Braced frame (11), including the encapsulation slot (11a) with first surface (111) and a light-emitting window (112), the light extraction
The width of window (112) is more than the width of the first surface (111)；
The light source (12) of blue light is sent, is packaged in by an encapsulating material layer (13) on the first surface (111)；
Quantum dot membrane module (14), including quantum dot film (141) and be connected to quantum dot film (141) first side first protect
Cuticula (142) and the second protective film (143) for being connected to quantum dot film (141) second side；Wherein, with first protective film
(142) towards the direction of the light-emitting window (112), the quantum dot membrane module (14) is connected to the encapsulating material layer
(13) on；
Wherein, the width of the quantum dot membrane module (14) is not less than the width of the light-emitting window (112)；The quantum dot film
(141) it is configured as the blue light components that the light source (12) is sent being converted to green light and feux rouges；
Wherein, first protective film (142) is connected to the encapsulation by using the mode that the first double faced adhesive tape (15) is pasted
Second protective film (143) is connected to the amount by material layer (13) by using the mode that the second double faced adhesive tape (16) is pasted
Son point film (141) second side；
Wherein, second double faced adhesive tape (16) extends to the support at the top and bottom of the quantum dot film (141)
The top and bottom of frame (11), second protective film (143) are prolonged always from the top and bottom of the quantum dot film (141)
Extend the top and bottom of the braced frame (11).
2. backlight module according to claim 1, which is characterized in that the light source (12) is blue-light LED chip.
3. a kind of liquid crystal display, including liquid crystal panel (200) and backlight module (100), the liquid crystal panel (200) with it is described
Backlight module (100) is oppositely arranged, and the backlight module (100) provides display light source and gives the liquid crystal panel (200), so that institute
It states liquid crystal panel (200) and shows image, wherein, the backlight module (100) uses backlight mould as claimed in claim 1 or 2
Group.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104808386A CN104808386A (en) | 2015-07-29 |
| CN104808386B true CN104808386B (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717704B (en) * | 2016-04-22 | 2018-10-23 | 深圳市华星光电技术有限公司 | A kind of two-sided display screen and its LED light bar |
| US10203547B2 (en) | 2016-06-16 | 2019-02-12 | Hisense Electric Co., Ltd. | Quantum dot light emitting device, backlight module, and liquid crystal display device |
| 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 |
| CN106353923A (en) * | 2016-11-25 | 2017-01-25 | 江苏华功第三代半导体产业技术研究院有限公司 | Backlight source |
| 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 |
| CN109001936A (en) * | 2017-06-06 | 2018-12-14 | 群创光电股份有限公司 | Light source module and display equipment |
| TWI661251B (en) * | 2018-06-12 | 2019-06-01 | 友達光電股份有限公司 | 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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| WO2010071386A2 (en) * | 2008-12-19 | 2010-06-24 | 삼성엘이디 주식회사 | Light emitting device package, backlight unit, display device and lighting device |
| KR101689607B1 (en) * | 2010-06-14 | 2016-12-26 | 엘지전자 주식회사 | Mobile terminal |
| KR101710212B1 (en) * | 2010-12-28 | 2017-02-24 | 엘지전자 주식회사 | Optical device and light emitting diode package using the same, backlight apparatus |
| KR101859653B1 (en) * | 2011-08-30 | 2018-05-18 | 삼성전자주식회사 | Light emitting unit and liquid display apparatus having the same |
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| KR101091348B1 (en) * | 2010-07-09 | 2011-12-07 | 엘지이노텍 주식회사 | Light guide plate using quantum dot, method for manufacturing the same and back light unit |
| CN102954408A (en) * | 2011-08-26 | 2013-03-06 | 三星电子株式会社 | Backlight unit and manufacturing method thereof, and liquid crystal display device having same |
| CN104483778A (en) * | 2014-12-31 | 2015-04-01 | 上海中航光电子有限公司 | Light emitting device, backlight module and liquid crystal display device |
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| CN104808386A (en) | 2015-07-29 |
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