CN106773322A - Backlight module and double side liquid crystal display - Google Patents
Backlight module and double side liquid crystal display Download PDFInfo
- Publication number
- CN106773322A CN106773322A CN201710095910.6A CN201710095910A CN106773322A CN 106773322 A CN106773322 A CN 106773322A CN 201710095910 A CN201710095910 A CN 201710095910A CN 106773322 A CN106773322 A CN 106773322A
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- CN
- China
- Prior art keywords
- quantum dot
- backlight module
- optical film
- guide plate
- liquid crystal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G02F1/133615—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
Abstract
The present invention provides a kind of backlight module and double side liquid crystal display.Wherein backlight module includes：Light source, low-refraction glue-line, the oxidation prevention layer that blocks water, the first optical film, the second optical film and the light guide plate with first surface, second surface and incidence surface, quantum dot film is provided with the first surface of light guide plate, the quantum dot site being arranged in array is provided with the quantum dot film, along the direction away from light guide plate, low-refraction glue-line is disposed with the first surface of light guide plate, block water oxidation prevention layer and the first optical film.Second optical film is covered on a second surface.Light source is arranged near incidence surface.Said structure sets quantum dot film by light guide plate first surface, it is capable of achieving most true picture color rendition, and the incidence surface of light guide plate is arranged on due to light source, quantum dot film is away from light source, therefore the temperature for avoiding quantum dot film is quenched, the quantum dot film for so setting has luminous efficiency very high.
Description
Technical field
The present invention relates to display screen technology field, more particularly to a kind of backlight module and double side liquid crystal display.
Background technology
At present, the color gamut levels of TFT LCD part are general 72% or so, in order to further improve colour gamut water
Flat, quantum dot (Quantum Dot) back light model setting technology is arisen at the historic moment.Quantum dot light emitting material observes quantum size effect, its
Property changes with the change in size of quantum dot.When being stimulated by light or electricity, quantum dot can send coloured light, light
Color is relevant with its property, therefore the light that it sends can be controlled by changing its size.Quantum dot light emitting material
Have the advantages that luminescent spectrum concentration, excitation are high.By quantum dot light emitting material use in display technology field, can be significantly
The colour gamut of traditional monitor is improved, making the color restoration capability of display is strengthened.Quantum dot backlight module make use of quantum
This feature of point, the coloured light for exciting different colours is irradiated using the irradiation of LED-backlit to quantum dot layer, and with part thoroughly
The Colored light mixing for crossing quantum dot obtains white light, so as to lift the illumination effect of whole backlight module.
As two-sided display screen demand is more and more extensive, therefore how technology of quantum dots is applied in double-sided display, into
It is a problem of current urgent need to resolve.
The content of the invention
The present invention provides a kind of backlight module and double side liquid crystal display, is used to solve in the prior art not by quantum dot
Technology is applied to the technical problem of double-sided display.
One aspect of the present invention provides a kind of backlight module, including：Light source, low-refraction glue-line, the oxidation prevention layer that blocks water, the first light
Learn film, the second optical film and the light guide plate with first surface, second surface and incidence surface, first table of the light guide plate
Quantum dot film is provided with face, the quantum dot site being arranged in array, the light guide plate are provided with the quantum dot film
The first surface side low-refraction glue-line is disposed with away from the direction of the light guide plate, described is blocked water
Oxygen layer and first optical film；Second optical film is covered on the second surface；The light source enters described in being arranged on
Near smooth surface.
Further, reflectivity of the reflectivity of first optical film more than second optical film.
Further, the oxidation prevention layer that blocks water is made up of aluminium, silver, silica or silicon nitride and organic material.
Further, the refractive index of the low-refraction glue-line is less than 1.42.
Further, the thickness of the low-refraction glue-line is between 3um to 20um.
Further, also including the 3rd optical film and the 4th optical film, wherein, the 3rd optical film is covered in described
On one optical film, the 4th optical film is covered on second optical film.
Further, the light source transmitting blue light, the quantum dot site includes red quantum dot and green quantum dot.
Further, the light source transmitting feux rouges, the quantum dot site includes green quantum dot and blue quantum dot.
Further, the light source transmitting green glow, the quantum dot site includes red quantum dot and blue quantum dot.
Another aspect of the present invention provides a kind of double side liquid crystal display, including the first liquid crystal display, the second liquid crystal display and above-mentioned
Backlight module, wherein, the backlight module is located between first liquid crystal display and second liquid crystal display, with to described the
One liquid crystal display and second liquid crystal display provide backlight.
Backlight module and double side liquid crystal display that the present invention is provided are thin in the first surface coating quantum dot of light guide plate
Film, realizes that blue light becomes white light by quantum dot film, meanwhile, increase by one layer of low-refraction between oxidation prevention layer and light guide plate blocking water
Glue-line realizes the total reflection of the blue light (or feux rouges or green glow) in light guide plate of light source transmitting, so as to improve the profit of light
With rate.Said structure sets quantum dot film by light guide plate first surface, is capable of achieving most true picture color rendition, and
Quantum dot film is arranged between low-refraction glue-line and light guide plate, with good reliability, and because light source is arranged on
The incidence surface of light guide plate, quantum dot film is away from light source, therefore the temperature for avoiding quantum dot film is quenched, the quantum for so setting
Point film has luminous efficiency very high.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 is the structural representation of backlight module provided in an embodiment of the present invention；
Fig. 2 is the structural representation of double side liquid crystal display provided in an embodiment of the present invention.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not drawn according to actual ratio.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is the structural representation of backlight module provided in an embodiment of the present invention.As shown in figure 1, the present embodiment provides one
Backlight module is planted, including：Light source 1, low-refraction glue-line 2, the oxidation prevention layer 3 that blocks water, the first optical film 4, the second optical film 5 and have
The light guide plate 6 of first surface 61, second surface 62 and incidence surface 63.
Wherein, quantum dot film is provided with the first surface 61 of light guide plate 6, is provided with quantum dot film and is arranged in array
The quantum dot site 64 of cloth.The side of first surface 61 of light guide plate 6 is disposed with low-refraction on away from the direction of light guide plate 6
Glue-line 2, block water the optical film 4 of oxidation prevention layer 3 and first.Second optical film 5 is covered on second surface 62.Light source 1 is arranged on into light
Near face 63.
Specifically, being illustrated by taking the transmitting blue light of light source 1 as an example.When the transmitting of light source 1 is for blue light, quantum dot site 64
Including red quantum dot and green quantum dot, red quantum dot can launch feux rouges under the exciting of light source 1, and green quantum dot is in light
Green glow can be launched under the exciting in source 1.It is in white light when feux rouges, green glow and the blue light into light guide plate 6 are combined, therefore, work as light
During the transmitting blue light of source 1, in the presence of red quantum dot and green quantum dot, blue light can be become white light.Also, due to light guide plate
Quantum dot site 64 is provided with 6 first surface 61, this can destroy total reflection of the blue light in light guide plate 6, so having portion
Divide blue light to be projected from first surface 61, reach low-refraction glue-line 2.Preferably, the refractive index of low-refraction glue-line 2 is less than
1.42, the thickness of low-refraction glue-line 2 is between 3um to 20um.Such low-refraction glue-line 2 can make arrival low-refraction
The blue light of glue-line 2 is totally reflected, and the blu-ray reflection that will enter low-refraction glue-line 2 is returned in quantum dot film, and then is swashed again
The transmitting of quantum dot site 64 monochromatic light in hair quantum dot film, so as to improve the utilization rate of light.
Quantum dot site 64 is the quanta point material that can inspire the coloured light different from the monochromatic light color that light source 1 sends.
Light source 1 launches blue light, and blue light enters light guide plate 6 from incidence surface 63, and blue light is injected on quantum dot site 64, excitation quantum point site
64 send feux rouges and green glow, and some blue light can enter low-refraction glue-line 2 through quantum dot film.In low-refraction glue-line 2
Under effect, make enter low-refraction glue-line 2 blue light reflect, by adjusting the refractive index of low-refraction glue-line 2, can make into
The blue light for entering low-refraction glue-line 2 is totally reflected, and the utilization rate of light is improved as far as possible.Low-refraction glue-line 2 will be injected
Blu-ray reflection is returned in quantum dot film, and the quantum dot site 64 remotivated in quantum dot film sends feux rouges and green glow, quantum
The feux rouges and green glow that point site 64 excites form white light with the blue light entered in light guide plate 6, so as to be two-sided liquid crystal display
Device provides backlight.Because 2 pairs of entrance blue lights therein of low-refraction glue-line reflect, the blue light of reflection reenters quantum dot
In film, and then remotivate quantum dot site 64 and send feux rouges and green glow, compared with prior art, greatly increase quantum dot net
The launching efficiency of point 64, improves brightness and the colour gamut of backlight module, further improves product quality.
Further, quantum dot site 64 is CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, one kind in ZnCuInS or
It is various.
Further, light source 1 is red-light LED, and to emission feux rouges, quantum dot film 64 includes green quantum dot and blueness
Quantum dot.Green quantum dot and blue quantum dot launch green glow and blue light respectively under the exciting of light source 1, green glow, blue light and enter
The feux rouges for entering light guide plate 6 is presented white light when being combined, therefore, when light source 1 launches feux rouges, in green quantum dot and amount of red
In the presence of son point, the feux rouges that light source 1 is emitted into light guide plate 6 can be changed into white light.Similarly, when light source 1 is green light LED, outwards
During transmitting green glow, quantum dot film 64 includes red quantum dot and blue quantum dot, when light source 1 launches green glow, in amount of red
In the presence of son point and blue quantum dot, the green glow that light source 1 is emitted into light guide plate 6 can be eventually become white light.Light source 1 be located at into
The centre position of smooth surface 63, and the light of transmitting vertically injects incidence surface 63.Further, the light of the first optical film 4 to the second
The reflectivity for learning film 5 is high.Can so make to be arranged on the display of the both sides of light guide plate 6 (side of first surface 61 and the side of second surface 62)
The brightness of screen and colourity are as close possible to preventing the emitting brightness of the side of second surface 62 from going out light higher than the side of first surface 61
Degree.
Further, the oxidation prevention layer 3 that blocks water is Al layer, Ag layers, the oxygen-proof membrane that blocks water that constitutes of SiOX or SiNX and organic material.
The oxidation prevention layer 3 that blocks water can be Al layers or Ag layers, and the oxidation prevention layer 3 that blocks water can also be that SiOX or SiNX is more with organic material composition
Laminar blocks water oxidation prevention layer.The oxidation prevention layer that blocks water is made up of aluminium, silver, silica or silicon nitride and organic material.SiOX and organic material
Expecting the oxygen-proof membrane that blocks water of composition has excellent barrier, and photopermeability is good, and the setting of the oxidation prevention layer 3 that blocks water makes quantum dot thin
Film 64 has good reliability.
Further, also including the 3rd optical film 7 and the 4th optical film 8.Wherein, the 3rd optical film 7 is covered in the first light
Learn on film 4, the 4th optical film 8 is covered on the second optical film 5.3rd optical film 7 and the 4th optical film 8 can be used to reaching highlighted
The effect of degree.3rd optical film 7 and the 4th optical film 8 can also use different materials using identical material.
Fig. 2 is the structural representation of double side liquid crystal display provided in an embodiment of the present invention.As shown in Fig. 2 the present invention is real
Apply the backlight during example also provides a kind of double side liquid crystal display, including the first liquid crystal display A, the second liquid crystal display B and above-described embodiment
Module C, wherein, backlight module C be located between the first liquid crystal display A and the second liquid crystal display B, backlight module C be the first liquid crystal display A and
Second liquid crystal display B provides backlight.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present invention
Under, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as in the absence of structure punching
Prominent, the every technical characteristic being previously mentioned in each embodiment can combine in any way.The invention is not limited in text
Disclosed in specific embodiment, but all technical schemes including falling within the scope of the appended claims.
Claims (10)
1. a kind of backlight module, it is characterised in that including：Light source, low-refraction glue-line, the oxidation prevention layer that blocks water, the first optical film,
Two optical films and the light guide plate with first surface, second surface and incidence surface, set on the first surface of the light guide plate
Quantum dot film is equipped with, the quantum dot site being arranged in array is provided with the quantum dot film, along away from the light guide plate
Direction, the low-refraction glue-line, the oxidation prevention layer that blocks water are disposed with the first surface of the light guide plate
With first optical film；Second optical film is covered on the second surface；The light source is arranged on the incidence surface
Near.
2. backlight module according to claim 1, it is characterised in that the reflectivity of first optical film is more than described the
The reflectivity of two optical films.
3. backlight module according to claim 1, it is characterised in that the oxidation prevention layer that blocks water is by aluminium, silver, silica or nitrogen
SiClx is constituted with organic material.
4. backlight module according to claim 1, it is characterised in that the refractive index of the low-refraction glue-line is less than
1.42。
5. backlight module according to claim 1, it is characterised in that the thickness of the low-refraction glue-line is arrived in 3um
Between 20um.
6. backlight module according to claim 1, it is characterised in that also including the 3rd optical film and the 4th optical film, its
In, the 3rd optical film is covered on first optical film, and the 4th optical film is covered on second optical film.
7. the backlight module according to any one of claim 1-6, it is characterised in that the light source launches blue light, described
Quantum dot site includes red quantum dot and green quantum dot.
8. the backlight module according to any one of claim 1-6, it is characterised in that the light source launches feux rouges, described
Quantum dot site includes green quantum dot and blue quantum dot.
9. the backlight module according to any one of claim 1-6, it is characterised in that the light source launches green glow, described
Quantum dot site includes red quantum dot and blue quantum dot.
10. a kind of double side liquid crystal display, it is characterised in that including the first liquid crystal display, the second liquid crystal display and such as claim 1-9
Any one of backlight module, wherein, the backlight module be located at first liquid crystal display and second liquid crystal display it
Between, provide backlight with to first liquid crystal display and second liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710095910.6A CN106773322B (en) | 2017-02-22 | 2017-02-22 | Backlight module and double-sided liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710095910.6A CN106773322B (en) | 2017-02-22 | 2017-02-22 | Backlight module and double-sided liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106773322A true CN106773322A (en) | 2017-05-31 |
| CN106773322B CN106773322B (en) | 2020-09-08 |
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ID=58958868
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710095910.6A Active CN106773322B (en) | 2017-02-22 | 2017-02-22 | Backlight module and double-sided liquid crystal display |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398829A (en) * | 2018-02-27 | 2018-08-14 | 惠州市华星光电技术有限公司 | Backlight module and preparation method thereof based on quantum dot |
| CN108983491A (en) * | 2018-07-20 | 2018-12-11 | 深圳市华星光电技术有限公司 | Liquid crystal display device and its quantum-dot structure |
| CN110738940A (en) * | 2019-11-28 | 2020-01-31 | 京东方科技集团股份有限公司 | Quantum dot film, color film layer and display device |
| WO2020168669A1 (en) * | 2019-02-21 | 2020-08-27 | 深圳市华星光电技术有限公司 | Quantum dot liquid crystal display |
| CN111724698A (en) * | 2020-06-04 | 2020-09-29 | 深圳市隆利科技股份有限公司 | Double-sided display electronic equipment |
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| CN105700236A (en) * | 2016-04-13 | 2016-06-22 | 深圳市华星光电技术有限公司 | Double-face liquid crystal display device and backlight module thereof |
| CN105700242A (en) * | 2016-04-29 | 2016-06-22 | 深圳市华星光电技术有限公司 | Backlight module and double-side liquid crystal display device |
| 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 |
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2017
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700236A (en) * | 2016-04-13 | 2016-06-22 | 深圳市华星光电技术有限公司 | Double-face liquid crystal display device and backlight module thereof |
| 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 |
| CN105700242A (en) * | 2016-04-29 | 2016-06-22 | 深圳市华星光电技术有限公司 | Backlight module and double-side liquid crystal display device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398829A (en) * | 2018-02-27 | 2018-08-14 | 惠州市华星光电技术有限公司 | Backlight module and preparation method thereof based on quantum dot |
| CN108398829B (en) * | 2018-02-27 | 2021-03-02 | 惠州市华星光电技术有限公司 | Backlight module based on quantum dots and manufacturing method thereof |
| CN108983491A (en) * | 2018-07-20 | 2018-12-11 | 深圳市华星光电技术有限公司 | Liquid crystal display device and its quantum-dot structure |
| WO2020168669A1 (en) * | 2019-02-21 | 2020-08-27 | 深圳市华星光电技术有限公司 | Quantum dot liquid crystal display |
| CN110738940A (en) * | 2019-11-28 | 2020-01-31 | 京东方科技集团股份有限公司 | Quantum dot film, color film layer and display device |
| CN111724698A (en) * | 2020-06-04 | 2020-09-29 | 深圳市隆利科技股份有限公司 | Double-sided display electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN106773322B (en) | 2020-09-08 |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |