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CN106647023A - Quantum dot liquid crystal display device and manufacturing method thereof - Google Patents

Quantum dot liquid crystal display device and manufacturing method thereof Download PDF

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Publication number
CN106647023A
CN106647023A CN201611130654.1A CN201611130654A CN106647023A CN 106647023 A CN106647023 A CN 106647023A CN 201611130654 A CN201611130654 A CN 201611130654A CN 106647023 A CN106647023 A CN 106647023A
Authority
CN
China
Prior art keywords
liquid crystal
quantum dot
point
guide plate
light
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.)
Pending
Application number
CN201611130654.1A
Other languages
Chinese (zh)
Inventor
樊勇
萧宇均
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to CN201611130654.1A priority Critical patent/CN106647023A/en
Publication of CN106647023A publication Critical patent/CN106647023A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133614Illuminating 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)
  • Led Device Packages (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention discloses a quantum dot liquid crystal display device. The quantum dot liquid crystal display device comprises a light guide plate, a packaging layer and a liquid crystal panel which are overlapped in turn from bottom to top, wherein the packaging layer comprises optical packaging glue and a dotted material; the optical packaging glue is glued between the light guide plate and the liquid crystal panel; the dotted material is scattered in the optical packaging glue; the dotted material is composed of a green light quantum dot and a fluoride down-conversion photoluminescence material. The invention also discloses a manufacturing method of the quantum dot liquid crystal display device. According to the invention, the green light quantum dot is packaged between the light guide plate and the liquid crystal panel; the low water-permeable oxygen-permeable characteristics of a glass substrate and the light guide plate are utilized, so that the display device has relatively high reliability; the dotted material which is composed of a green light quantum dot and a fluoride down-conversion photoluminescence material is packaged in the optical packaging glue in low refractive index, so that the farther spreading of the blue light in the light guide plate is benefited, meanwhile the color gamut of the liquid crystal display is greatly increased and the purpose of ultrathin liquid crystal display can be achieved.

Description

A kind of quantum dot Liquid crystal disply device and its preparation method
Technical field
The present invention relates to quantum dot display technology field, more particularly to a kind of quantum dot liquid crystal indicator and its manufacturer Method.
Background technology
At present, slimming and high colour gamut have become the mainstream development trend of liquid crystal display.Quantum dot is due to luminous The characteristics of efficiency high, high colour gamut, it is applied in high-end TV in recent years, but quantum dot, due to fearness oxygen afraid of water, temperature is sudden Go out serious, and material cost is high, causes its volume production difficulty to increase.Therefore, how to reduce materials'use and improve product reliability Become the prerequisite whether quantum dot displays product has production.
The content of the invention
In view of the deficiency that prior art is present, the invention provides a kind of quantum dot liquid crystal indicator and its manufacturer Method, can effectively reduce materials'use and improve product reliability, be suitable to volume production.
In order to realize above-mentioned purpose, following technical scheme is present invention employs:
A kind of quantum dot liquid crystal indicator, including the light guide plate, encapsulated layer and liquid that are cascading from bottom to top Crystal panel, the encapsulated layer includes being bonded in the optical package glue between the light guide plate and the liquid crystal panel and being dispersed in Point-like material in the optical package glue, the point-like material is by converting photoluminescent material under green light quantum point and fluoride Composition.
Used as one of which embodiment, the encapsulated layer also includes the scattering being scattered in the optical package glue Grain, and the scattering particles are positioned between the point-like material and the liquid crystal panel.
Used as one of which embodiment, the liquid crystal panel includes lower polarizing layer, and the lower polarizing layer is located at the liquid Between the bottom electrode and liquid crystal of crystal panel.
Used as one of which embodiment, the lower polarizing layer is made using the material such as liquid crystal light modulation film or metal grating.
Used as one of which embodiment, the liquid crystal panel is also including the upper polaroid being sequentially arranged on upper substrate and extensively Corneal film.
Used as one of which embodiment, the green light quantum point material is selected from CdSe/CdS, CdSe/ZnS, CdSe/ CdTe、InP、CuInS、CH3NH3PbX3、CsPbX3In one or more, wherein, X is halogens.
Used as one of which embodiment, converting photoluminescent material is A under the fluoride2MF6:Mn4+, wherein, M is Selected from the quadrivalent element of Si, Ti, Zr, Hf, Ge or Sn, A is alkali metal.
Used as one of which embodiment, the LED/light source of the quantum dot liquid crystal indicator is that wave-length coverage is 420- The shortwave blue light source of 450nm.
Another object of the present invention is to a kind of manufacture method of described quantum dot liquid crystal indicator is provided, including:
Point-like material of the coating containing light-cured resin on light guide plate;
Illumination curing point-like material;
One layer of optical package glue of coating;
Illumination curing optical package glue;
Coated optical packaging plastic again;
Laminating liquid crystal panel simultaneously solidifies again optical package glue.
The present invention is packaged with green light quantum point material between light guide plate and liquid crystal panel, make use of glass substrate and leaded light The low permeable oxygen flow characteristic of plate so that display device has reliable reliability;By in the optical package glue of low-refraction The point-like material of green light quantum point and converting photoluminescent material composition under fluoride is packaged with, blue light is not only improved in light guide plate It is middle to propagate so farther that significantly to lift liquid crystal display colour gamut simultaneously, the purpose of ultra-thin liquid crystal display is capable of achieving again.
Description of the drawings
Fig. 1 is the stepped construction schematic diagram of the quantum dot liquid crystal indicator of the embodiment of the present invention.
Fig. 2 is the manufacture method schematic diagram of the quantum dot liquid crystal indicator of the embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples The present invention is further described.It should be appreciated that specific embodiment described herein is only to explain the present invention, and without It is of the invention in limiting.
Refering to Fig. 1, the quantum dot liquid crystal indicator of the embodiment of the present invention includes that what is be cascading from bottom to top leads Tabula rasa 10, the LED/light source 100 of the incident side of light guide plate 10, encapsulated layer 20 and liquid crystal panel 30, can be with the bottom of light guide plate 10 One layer of reflector plate 1 be set, encapsulated layer 20 include being bonded in optical package glue 200 between light guide plate 10 and liquid crystal panel 30 and The point-like material 21 being dispersed in optical package glue 200, point-like material 21 under green light quantum point and fluoride by changing photic Luminescent material is constituted.
Wherein, light guide plate 10 is preferably glass material, by being capable of achieving green quantum in the coating of the top of glass light guide plate 10 Point and converting photoluminescent material site under fluoride, then the lower glass of the optical package glue by low-refraction and liquid crystal panel Baseplate-laminating, complete assembling finally by being sealed to the side of edge four of fitting.
By using glass substrate and the low permeable oxygen flow characteristic of glass light guide plate so that quanta point material with it is extraneous every Absolutely, panel bulk strength is enhanced, and reduces the thickness of display device so that display device has reliable reliability, together When, due to also having converting photoluminescent material under ruddiness fluoride in encapsulated layer 20, because the red light material will not be such as ruddiness Quantum dot equally has the characteristic of absorption green glow, therefore reduces re-absorption effect, improves while improving uniformity of luminance The efficiency of light energy utilization.And by the way that converting photoluminescent material under green light quantum point and fluoride is fabricated into mixed lattice point structure, The situation for absorbing green glow and causing light efficiency to decline using red light quantum point can be avoided, is conducive to lifting light efficiency and reduction LED/light source Energy consumption;Simultaneously as green light quantum point and ruddiness fluoride materials all have the advantages that luminescent spectrum half-wave peak width is narrow, Ke Yi great Amplitude lifts liquid crystal display colour gamut.
The lower polarizing layer 300 of the present embodiment is built in liquid crystal panel 30, and liquid crystal panel 30 includes setting successively from bottom to top Infrabasal plate 31, bottom electrode 32, liquid crystal 33, Top electrode 34, colored filter 35, upper substrate 36, upper polaroid 37 and the wide-angle put Diaphragm 38.By the way that lower polarizing layer 300 between the bottom electrode 32 and liquid crystal 33 of liquid crystal panel 30, to be reduced patch processing procedure partially, Be conducive to lifting the yield of panel.Wherein, lower polarizing layer 300 is preferably made using the material such as liquid crystal light modulation film or metal grating.
Scattering particles 22 are also dispersed with encapsulated layer 20, the scattering particles 22 are located at the top of point-like material 21, i.e. point-like Between the infrabasal plate 31 of material 21 and liquid crystal panel 30.The light that Jing point-like material 21 sends dissipates again through the scattering particles 22 on upper strata After penetrating, point-like bright spot can be avoided the occurrence of, light-emitting uniformity is accordingly improved.
As one of which preferred embodiment, green light quantum point material is selected from CdSe/CdS mixtures, CdSe/ZnS Mixture, CdSe/CdTe mixtures, InP, CuInS, CH3NH3PbX3、CsPbX3In one or more, wherein, X is halogen Element, such as Cl, Br, I.Converting photoluminescent material is A under fluoride2MF6:Mn4+, wherein, ":" to coordinate position, M is to be selected from The quadrivalent element of Si, Ti, Zr, Hf, Ge or Sn, A is alkali metal, such as Li, Na, K.
In addition, the LED/light source 100 of quantum dot liquid crystal indicator is the shortwave blue light light that wave-length coverage is 420-450nm Source, is conducive to improving the fluorescence excitation efficiency of quantum dot and ruddiness fluoride materials.
With reference to shown in Fig. 2, the present invention also provides a kind of manufacture method of quantum dot liquid crystal indicator, mainly includes:
S01, cleaning light guide plate;
S02, on light guide plate coating containing light-cured resin point-like material;
S03, illumination curing point-like material;
S04, one layer of optical package glue of coating;
S05, again illumination curing, make optical package adhesive curing;
S06, again coated optical packaging plastic;
S07, laminating liquid crystal panel;
S08, again illumination curing optical package glue.
Wherein, contain light-cured resin in the optical package glue of coating, can be accelerated the curing process by illumination.Walk above After the completion of rapid, the main composition of quantum dot liquid crystal indicator is completed, and the step such as laminating reflector plate, installation LED/light source is visual Situation and opportunity are carried out, and are repeated no more here.
Glue-line due to increased one layer of low-refraction between liquid crystal panel and light guide plate, it is possible to achieve blue light is in leaded light Total reflection in plate, needs especially it is emphasised that because light is from optically denser medium (glass light guide plate) to optically thinner medium (low-refraction glue Layer) when propagating, if optically thinner medium thickness excessively thin (and optical wavelength be close to), due to there is evanescent wave, a part of light wave can pass through Optically thinner medium travels to lower glass substrate, causes most light to be just transferred to infrabasal plate, nothing in glass light guide plate light inputting end Method realizes the purpose of brightness uniformity in shady face.Therefore, the thickness of low-index material need to be more than more than 5 optical wavelengths, and And cannot use high-index material between glass light guide plate and base plate glass.Additionally, shortwave blue light to green light quantum point and Transition material site can play destruction total reflection and the luminous effect of excitated fluorescent powder under ruddiness fluoride, then by scatternet Point can reach liquid crystal backlight brightness uniformity.
In sum, the present invention make use of by being packaged with green light quantum point material between light guide plate and liquid crystal panel The low permeable oxygen flow characteristic of glass substrate and light guide plate so that display device has reliable reliability;By in low-refraction Optical package glue in be packaged with the point-like material of converting photoluminescent material composition under green light quantum point and fluoride, both favorably In blue light propagate in light guide plate it is farther significantly lift liquid crystal display colour gamut simultaneously, achievable ultra-thin liquid crystal display again Purpose.
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 without departing from the application principle, some improvements and modifications can also be made, these improvements and modifications also should It is considered as the protection domain of the application.

Claims (9)

1. a kind of quantum dot liquid crystal indicator, it is characterised in that including the light guide plate (10) being cascading from bottom to top, Encapsulated layer (20) and liquid crystal panel (30), the encapsulated layer (20) is including being bonded in the light guide plate (10) and the liquid crystal surface Optical package glue (200) between plate (30) and the point-like material (21) being dispersed in the optical package glue (200), it is described Point-like material (21) is made up of green light quantum point with converting photoluminescent material under fluoride.
2. quantum dot liquid crystal indicator according to claim 1, it is characterised in that the encapsulated layer (20) also includes point The scattering particles (22) in the optical package glue (200), and the scattering particles (22) are dissipated positioned at the point-like material (21) and the liquid crystal panel (30) between.
3. quantum dot liquid crystal indicator according to claim 2, it is characterised in that under the liquid crystal panel (30) includes Polarizing layer (300), the lower polarizing layer (300) is between the bottom electrode (32) and liquid crystal (33) of the liquid crystal panel (30).
4. quantum dot liquid crystal indicator according to claim 3, it is characterised in that the lower polarizing layer (300) adopts The material such as liquid crystal light modulation film or metal grating makes.
5. quantum dot liquid crystal indicator according to claim 2, it is characterised in that the liquid crystal panel (30) also includes The upper polaroid (37) being sequentially arranged on upper substrate (36) and wide-angle diaphragm (38).
6. quantum dot liquid crystal indicator according to claim 2, it is characterised in that the green light quantum point material is selected from CdSe/CdS、CdSe/ZnS、CdSe/CdTe、InP、CuInS、CH3NH3PbX3、CsPbX3In one or more, wherein, X is Halogens.
7. quantum dot liquid crystal indicator according to claim 2, it is characterised in that photic is changed under the fluoride Luminescent material is A2MF6:Mn4+, wherein, M is the quadrivalent element selected from Si, Ti, Zr, Hf, Ge or Sn, and A is alkali metal.
8. according to the arbitrary described quantum dot liquid crystal indicator of claim 1-7, it is characterised in that the quantum dot liquid crystal The LED/light source (100) of showing device for wave-length coverage for 420-450nm shortwave blue light source.
9. the manufacture method of the arbitrary described quantum dot liquid crystal indicator of a kind of claim 1-8, it is characterised in that include:
Point-like material of the coating containing light-cured resin on light guide plate;
Illumination curing point-like material;
One layer of optical package glue of coating;
Illumination curing optical package glue;
Coated optical packaging plastic again;
Laminating liquid crystal panel simultaneously solidifies again optical package glue.
CN201611130654.1A 2016-12-09 2016-12-09 Quantum dot liquid crystal display device and manufacturing method thereof Pending CN106647023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611130654.1A CN106647023A (en) 2016-12-09 2016-12-09 Quantum dot liquid crystal display device and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611130654.1A CN106647023A (en) 2016-12-09 2016-12-09 Quantum dot liquid crystal display device and manufacturing method thereof

Publications (1)

Publication Number Publication Date
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107037630A (en) * 2017-06-23 2017-08-11 京东方科技集团股份有限公司 Color membrane substrates and preparation method thereof and display device
CN107991806A (en) * 2017-11-24 2018-05-04 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
CN109739041A (en) * 2019-01-16 2019-05-10 南通惟怡新材料科技有限公司 Backlight module
CN110673254A (en) * 2019-09-20 2020-01-10 宁波东旭成新材料科技有限公司 Quantum dot glass light guide plate
WO2021073282A1 (en) * 2019-10-16 2021-04-22 福州大学 FULL-COLOR μLED MICRO-DISPLAY DEVICE WITHOUT ELECTRICAL CONTACT, AND METHOD FOR MANUFACTURING SAME

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102977880A (en) * 2012-12-04 2013-03-20 中国科学院半导体研究所 Preparation method of downconversion fluorescent material
CN104793284A (en) * 2015-04-30 2015-07-22 武汉华星光电技术有限公司 Light guiding plate, backlight module and liquid crystal display
CN105446003A (en) * 2015-12-01 2016-03-30 苏州星烁纳米科技有限公司 Quantum dot dispersion, preparation method, backlight module and display device
CN106125398A (en) * 2016-07-25 2016-11-16 广东普加福光电科技有限公司 A kind of novel quantum dot liquid crystal backlight

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102977880A (en) * 2012-12-04 2013-03-20 中国科学院半导体研究所 Preparation method of downconversion fluorescent material
CN104793284A (en) * 2015-04-30 2015-07-22 武汉华星光电技术有限公司 Light guiding plate, backlight module and liquid crystal display
CN105446003A (en) * 2015-12-01 2016-03-30 苏州星烁纳米科技有限公司 Quantum dot dispersion, preparation method, backlight module and display device
CN106125398A (en) * 2016-07-25 2016-11-16 广东普加福光电科技有限公司 A kind of novel quantum dot liquid crystal backlight

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107037630A (en) * 2017-06-23 2017-08-11 京东方科技集团股份有限公司 Color membrane substrates and preparation method thereof and display device
CN107991806A (en) * 2017-11-24 2018-05-04 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
CN109739041A (en) * 2019-01-16 2019-05-10 南通惟怡新材料科技有限公司 Backlight module
CN110673254A (en) * 2019-09-20 2020-01-10 宁波东旭成新材料科技有限公司 Quantum dot glass light guide plate
WO2021073282A1 (en) * 2019-10-16 2021-04-22 福州大学 FULL-COLOR μLED MICRO-DISPLAY DEVICE WITHOUT ELECTRICAL CONTACT, AND METHOD FOR MANUFACTURING SAME

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Application publication date: 20170510