WO2017161714A1 - 量子点膜及显示装置 - Google Patents

量子点膜及显示装置 Download PDF

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Publication number
WO2017161714A1
WO2017161714A1 PCT/CN2016/086675 CN2016086675W WO2017161714A1 WO 2017161714 A1 WO2017161714 A1 WO 2017161714A1 CN 2016086675 W CN2016086675 W CN 2016086675W WO 2017161714 A1 WO2017161714 A1 WO 2017161714A1
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Prior art keywords
quantum dot
film
display device
ultraviolet
quantum
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PCT/CN2016/086675
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English (en)
French (fr)
Inventor
徐元杰
黄炜赟
王杨
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京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Priority to US15/533,098 priority Critical patent/US10203527B2/en
Publication of WO2017161714A1 publication Critical patent/WO2017161714A1/zh

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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 
    • G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
    • G02F1/017—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/0005—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for pharmaceuticals, biologicals or living parts
    • A61L2/0011—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for pharmaceuticals, biologicals or living parts using physical methods
    • A61L2/0029—Radiation
    • A61L2/0047—Ultraviolet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation
    • 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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/115—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising active inorganic nanostructures, e.g. luminescent quantum dots
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
    • 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 
    • G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
    • G02F1/017—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
    • G02F1/01791—Quantum boxes or quantum dots
    • 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
    • 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
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/331—Nanoparticles used in non-emissive layers, e.g. in packaging layer
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/52—PV systems with concentrators

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a quantum dot film and a display device.
  • touch displays are widely used in mobile communications, tablets, cameras, satellite navigation, medical devices and other display areas.
  • the touch display screen is frequently used, and it is very easy to become a medium for the spread of microorganisms such as viruses and bacteria. This problem is particularly prominent in many public places and medical and health places where bacteria and viruses are strict. Therefore, how to ensure that the screen of the touch display screen is clean and hygienic has become a topic that cannot be ignored.
  • Quantum dots which can also be called nanocrystals, are nanoparticles composed of Group II-VI or Group III-V elements.
  • the particle size of a quantum dot is generally between 1 and 20 nm. Since electrons and holes are quantum confinement, the continuous band structure becomes a discrete energy level structure with molecular characteristics, and can emit fluorescence after being excited.
  • the prior art has applied quantum dots to the production of display screens. Regardless of whether it is a quantum dot film used in a backlight module or a color filter, the main principle is to use quantum dots to emit red, green and blue RGB three-color light, but The quantum dot film does not have a bactericidal effect.
  • the quantum dot film of the touch display screen in the prior art does not have a bactericidal effect, and the touch display screen is highly prone to become a medium for microbial transmission of viruses, bacteria, etc. due to the high frequency of use, therefore, how to ensure touch The cleanliness of the screen of the display screen has become a topic that cannot be ignored.
  • One of the objects of the present invention is to provide a quantum dot film and a display device for at least partially solving the problem that the quantum dot film of the touch display screen existing in the prior art does not have a sterilizing effect.
  • a quantum dot film comprising:
  • At least one ultraviolet quantum dot is disposed in the matrix and is capable of emitting ultraviolet light having a wavelength in the range of 190-280 nm.
  • the quantum dot film further includes:
  • a plurality of R quantum dots, G quantum dots, and B quantum dots dispersed in the matrix and capable of emitting red, green, and blue light, respectively.
  • the R quantum dots, the G quantum dots, and the B quantum dots are uniformly layered along a thickness direction of the quantum dot film.
  • the at least one ultraviolet quantum dot is a uniform layer of uniformly arranged structures.
  • the at least one ultraviolet quantum dot is located at an uppermost or lowermost portion of the R quantum dot, the G quantum dot, and a layer where the B quantum dot is located, and the R quantum dot, the G quantum The point is between any of the layers in which the B quantum dot is located or between any two adjacent layers.
  • the regions occupied by the R quantum dots, the G quantum dots, and the B quantum dots in the matrix do not coincide with each other in a direction perpendicular to a thickness direction of the quantum dot film, and the phases The adjacent areas are separated by a black matrix.
  • the at least one ultraviolet quantum dot is distributed in all or part of the occupied area.
  • the at least one ultraviolet quantum dot emits ultraviolet light having a wavelength in the range of 200-275 nm.
  • a display device comprising the quantum dot film as described above.
  • the quantum dot film when the quantum dot film includes R quantum dots, G quantum dots, and B quantum dots capable of emitting red, green, and blue light, respectively, the quantum dot film is used as a color film or a backlight module.
  • the display device further includes: an antibacterial film.
  • the antimicrobial film is the outermost film layer of the display device.
  • the antibacterial film is located inside the display device, and an insulating layer that insulates the antibacterial film from other film layers inside the display device is further disposed inside the display device.
  • the antimicrobial film has a thickness of 50-500 nm.
  • the display device emits ultraviolet light having a wavelength range of 190-280 nm, which accounts for 2% of the energy of the emitted white light, and 2% higher than the energy of ultraviolet light having a wavelength range of 190-280 nm. 4%.
  • the present invention adds an ultraviolet quantum dot capable of emitting a C-band ultraviolet UVC to a quantum dot film, thereby sterilizing the display screen when the screen is displayed.
  • FIG. 1 is a schematic structural view of a quantum dot film according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a quantum dot film including RGB quantum dots and ultraviolet quantum dots according to another embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of another quantum dot film including RGB quantum dots and ultraviolet quantum dots according to still another embodiment of the present invention.
  • Embodiments of the present invention provide a quantum dot film capable of emitting short-wave ultraviolet rays (UVC or ultraviolet C-band), which can be used in any case capable of exciting a quantum dot film to emit ultraviolet UVC, including an existing OLED screen. , LCD screen, quantum dot screen, etc.
  • UVC short-wave ultraviolet rays
  • FIG. 1 is a schematic structural diagram of a quantum dot film according to an embodiment of the present invention.
  • the quantum dot film includes: a substrate 101, and at least one disposed or dispersed in the matrix 101 and capable of emitting a C-band Ultraviolet UVC UV Quantum Dots 102.
  • a plurality of ultraviolet quantum dots 102 are taken as an example. It is obvious that those skilled in the art can specifically set the number of ultraviolet quantum dots 102 as needed.
  • UV sterilization is to destroy and change the DNA (deoxyribonucleic acid) structure of microorganisms by ultraviolet radiation, so that the bacteria can die immediately or can not breed, and achieve the purpose of sterilization.
  • sterilization can be achieved by UVC irradiation for 1-2 seconds. effect.
  • Ultraviolet light is classified into A-band ray, B-band ray, and C-band ray (referred to as UVA, UVB, and UVC, respectively), and the wavelength ranges are 400-315 nm, 315-280 nm, and 280-190 nm, respectively.
  • UVA and UVB are harmful to the human body
  • the ultraviolet rays used for disinfection are C-band ultraviolet rays, which are harmless to the human body and can eliminate microorganisms such as bacteria, viruses, molds, and unicellular algae.
  • ultraviolet rays are invisible when the wavelength is less than 380 nm.
  • the present invention adds an ultraviolet quantum dot capable of emitting UVC to the quantum dot film, it sterilizes the display screen when displayed on the screen.
  • the quantum dot film is generally located inside the display screen, the sterilization effect and function are relatively stable, and will not decrease as the use time increases.
  • the C-band UVC has a wavelength range of 200-275 nm
  • the bactericidal effect is the strongest and harmless to the human body. Therefore, the selection of this wavelength range not only ensures the display quality but also ensures the health of the human body.
  • the quantum dot film in the prior art mainly includes quantum dots capable of emitting red, green and blue RGB three-color light, the present invention
  • the quantum dot film of the Ming Dynasty can also be combined with the quantum dots of the prior art which emit red, green and blue RGB three-color light.
  • FIG. 2 is a schematic structural diagram of a quantum dot film including RGB quantum dots and ultraviolet quantum dots according to another embodiment of the present invention.
  • the quantum dot film further includes a plurality of R quantum dots 201, G quantum dots 202, and B quantum dots 203 dispersed in the matrix 101 and capable of emitting red, green, and blue light, respectively.
  • the black sphere in FIG. 2 is an ultraviolet quantum dot
  • the R quantum dot 201, the G quantum dot 202, and the B quantum dot 203 are uniformly layered. As shown in FIG. 2, the R quantum dot 201, the G quantum dot 202, and the B quantum dot 203 are respectively a uniform layer, and the G quantum dot layer is located between the R quantum dot layer and the B quantum dot layer.
  • the specific arrangement position of the ultraviolet quantum dots 102 provided in the embodiments of the present invention may not be limited.
  • the ultraviolet quantum dots 102 are distributed anywhere in the quantum dot film, or the ultraviolet quantum dots 102 are a uniform layer of uniformly arranged structures.
  • the ultraviolet quantum dots 102 may be randomly distributed in the quantum dot film, for example, at the top of all layers as shown, or may be located at the bottom of all layers.
  • the ultraviolet quantum dot 102 is located in any one of the R quantum dot layer, the G quantum dot layer, or the B quantum dot layer, or between the layers.
  • the ultraviolet quantum dots 102 are also uniformly arranged in a single layer.
  • the three quantum dots of R, G, and B are arranged in different regions in the same layer.
  • FIG. 3 is a schematic structural diagram of another quantum dot film including RGB quantum dots and ultraviolet quantum dots according to still another embodiment of the present invention.
  • the regions occupied by the R quantum dots 201, the G quantum dots 202, and the B quantum dots 203 in the matrix 101 do not coincide with each other as viewed in a direction perpendicular to the film thickness, and adjacent regions are separated by a black matrix 204.
  • the R quantum dot 201, the G quantum dot 202, and the B quantum dot 203 are respectively distributed in different regions in the matrix 101, and the regions occupied by each quantum dot do not coincide with each other.
  • the black rectangle in the figure represents the black matrix 204 for spacing adjacent regions.
  • the specific arrangement position of the ultraviolet quantum dots 102 provided in the embodiments of the present invention may not be limited.
  • the ultraviolet quantum dots 102 are distributed in all or part of the area occupied by each quantum dot.
  • the ultraviolet quantum dots 102 may be distributed in a region occupied by each quantum dot, or may be distributed in a region occupied by a part of each quantum dot, and may be set as needed.
  • the ultraviolet quantum dot 102 provided by the embodiment of the present invention needs to emit the ultraviolet light UVC of the C-band of the quantum dot, and the quantum dot material whose absorption peak is other light and the fluorescence emission peak is in the UVC band.
  • the specific material for fabricating the ultraviolet quantum dots or the manufacturing method and size of the quantum dots reference may be made to the prior art scheme for emitting quantum dots to emit ultraviolet light, which will not be elaborated here.
  • the specific arrangement position of the ultraviolet quantum dots 102 can be set as needed, and is not limited to the arrangement provided above.
  • the ultraviolet quantum dots 102 may be uniformly arranged in the quantum dot film, or may be disposed only around the display device or at four corners of the display device.
  • an embodiment of the present invention further provides a display device, which includes the above quantum dot film provided by the embodiment of the present invention, and the display device can be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame. , navigation, etc. Any product or component that has a display function.
  • Other indispensable components of the display device are understood by those skilled in the art, and are not described herein, nor should they be construed as limiting the invention.
  • the quantum dot film included in the display device includes R quantum dots, G quantum dots, and B quantum dots capable of emitting red, green, and blue light, respectively
  • the quantum dot film is used as a color film or a backlight module.
  • a quantum dot film containing R quantum dots, G quantum dots and B quantum dots capable of emitting red, green and blue light can be used to replace the color film in the display device with a quantum dot film by different arrangement or the like. Or a backlight module.
  • the quantum dot film provided in the embodiment of the invention can set an ultraviolet quantum dot capable of emitting UVC in the R quantum dot, the G quantum dot and the B quantum dot, thereby achieving on-screen display under the premise of ensuring display quality and human health. At the time, it plays a role in sterilizing the display. Therefore, the quantum dot film provided in the embodiment of the present invention can also be used as a color film or a backlight module in a display device.
  • the quantum dot film including the ultraviolet quantum dot, the R quantum dot, the G quantum dot and the B quantum dot provided in the embodiment of the present invention can be referred to the arrangement of the quantum dot film in the prior art.
  • it can be applied to a backlight module, an array substrate or a color film substrate, and can realize the light-emitting display of quantum dots.
  • the ultraviolet quantum dot illumination reference may also be made to the manner in which quantum dots emit ultraviolet light or other monochromatic light in the prior art.
  • the present invention increases the function of UVC sterilization by emitting ultraviolet quantum dots of a specific wavelength UVC in the quantum dot film of the display device, and in order to sterilize.
  • the utility model has the advantages of stronger action, and can be combined with the antibacterial film in the prior art to realize the self-cleaning and antibacterial function of the display panel.
  • the display device further includes: an antibacterial film.
  • the implementation of the present invention For the material, size, preparation method, etc.
  • the antibacterial film in the prior art reference may be made to the antibacterial film in the prior art, as long as it is an antibacterial film which has a sterilization function and can enhance the sterilization ability under UVC irradiation, and does not do this. Too much limit.
  • the specific position of the antibacterial film provided by the embodiment of the present invention may also be not limited, and may be located at any position in the display device. Since the outer film layer of the touch display screen is in direct contact with a human hand, in one example, the antibacterial film is located at or the outermost film layer of the display device.
  • the antibacterial film may also be disposed on the front or back side or side of the outer casing of the display device (such as a mobile phone) for displaying the sterilization and cleanness of the surface of the device.
  • the above antibacterial film can also be disposed inside the display device for keeping the inside of the display device clean, which is beneficial to the protection of the internal circuit and components of the display device, but in this case, in order not to affect the normal operation of other film layers, Two insulating layers are disposed on the upper and lower surfaces of the antibacterial film.
  • the antimicrobial film is located inside the display device, and an insulating layer that insulates the antimicrobial film from other film layers is also disposed inside the display device.
  • the effect of the antibacterial film can be effectively exerted.
  • the antimicrobial film has a thickness of 50-500 nm.
  • the amount of UVC emitted by the display device can be appropriately set.
  • the ratio of the energy of the UVC emitted by the display device to the energy of the emitted white light is 2% to 4% higher than the ratio of the energy of the UVC in sunlight.
  • the present invention adds an ultraviolet quantum dot capable of emitting a C-band ultraviolet UVC to a quantum dot film, thereby sterilizing the display screen when the screen is displayed.
  • the quantum dot film is located inside the display screen, the sterilization effect and function do not decrease as the use time increases.

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Abstract

一种量子点膜及显示装置。量子点膜包括：基质（101）；和至少一个紫外量子点（102），设置于基质（101）中且能够发射波长范围为190-280nm的紫外线。以及一种包括量子点膜的显示装置。

Description

量子点膜及显示装置
本申请要求于2016年03月22日递交的、申请号为201610169476.7、发明名称为“一种量子点膜及显示装置”的中国专利申请的优先权，其全部内容通过引用并入本申请中。
技术领域
本发明涉及显示技术领域，尤其涉及一种量子点膜及显示装置。
背景技术
目前，触摸显示屏广泛应用于移动通讯、平板电脑、相机、卫星导航、医疗设备及其他显示领域。但同时也存在一些问题，触摸显示屏使用频率很高，极易成为病毒、细菌等微生物传播的媒介物，在许多公共场所和对细菌、病毒要求严格的医疗卫生场所，这一问题尤其突出。因此，如何确保触摸显示屏的屏幕清洁卫生，成为一项不可忽视的课题。
量子点又可以称为纳米晶，是一种由II-VI族或III-V族元素组成的纳米颗粒。量子点的粒径一般介于1-20nm之间，由于电子和空穴被量子限域，连续的能带结构变成具有分子特性的分立能级结构，受激发后可以发射荧光。现有技术已经将量子点应用到显示屏的制作中，不管是背光模组还是彩膜滤光片中使用的量子点膜，其主要原理都是利用量子点发射红绿蓝RGB三色光，但该量子点膜却并不具备杀菌作用。
综上所述，目前现有技术中触摸显示屏的量子点膜不具备杀菌作用，而触摸显示屏由于使用频率很高，极易成为病毒、细菌等微生物传播的媒介物，因此，如何确保触摸显示屏的屏幕的清洁卫生，成为一项不可忽视的课题。
发明内容
本发明的目的之一在于提供一种量子点膜及显示装置，用以至少部分地解决现有技术中存在的触摸显示屏的量子点膜不具备杀菌作用的问题。
根据本发明的一个方面，提供了一种量子点膜，包括：
基质；和
至少一个紫外量子点，设置于所述基质中且能够发射波长范围为190-280nm的紫外线。
在一个示例中，所述量子点膜还包括：
多个分散于所述基质中且能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点。
在一个示例中，所述R量子点、所述G量子点和所述B量子点均匀沿量子点膜的厚度方向分层排列。
在一个示例中，所述至少一个紫外量子点为一整层均匀排列的结构。
在一个示例中，所述至少一个紫外量子点位于所述R量子点、所述G量子点和所述B量子点所在层的最上面或最下面，位于所述R量子点、所述G量子点和所述B量子点所在层中任一层中或任意两个相邻的层之间。
在一个示例中，在垂直于量子点膜的厚度方向的方向上，所述R量子点、所述G量子点和所述B量子点在所述基质中所占的区域互不重合，且相邻区域之间通过黑矩阵隔开。
在一个示例中，所述至少一个紫外量子点分布在全部或部分所述所占的区域中。
在一个示例中，所述至少一个紫外量子点发射的紫外线的波长范围为200-275nm。
根据本发明的另一方面，提供了一种显示装置，包括如上所述的量子点膜。
在一个示例中，在所述量子点膜包括能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点时，所述量子点膜用作彩膜或背光模组。
在一个示例中，所述显示装置还包括：抗菌膜。
在一个示例中，所述抗菌膜为所述显示装置的最外膜层。
在一个示例中，所述抗菌膜位于所述显示装置内部，且在显示装置的内部还设置有将所述抗菌膜与显示装置内部的其它膜层绝缘的绝缘层。
在一个示例中，所述抗菌膜的厚度为50-500nm。
在一个示例中，所述显示装置发射的波长范围为190-280nm的紫外线的能量占发射的白光的能量的比例，比日光中波长范围为190-280nm的紫外线的能量所占比例高2％-4％。
本发明在量子点膜中增加能够发射C波段的紫外线UVC的紫外量子点，因而，在屏幕显示时，为显示屏杀菌。
附图说明
图1为本发明的一个实施例提供的一种量子点膜的结构示意图；
图2为本发明的另一实施例提供的包含RGB量子点和紫外量子点的量子点膜的结构示意图；
图3为本发明的又一实施例提供的包含RGB量子点和紫外量子点的另一种量子点膜的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，并不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供了一种能够发射短波紫外线(UVC或紫外线C波段)的量子点膜，该量子点膜可以用在能够激发量子点膜发射紫外线UVC的任何情况中，包括现有的OLED屏幕、液晶屏幕、量子点屏幕等。
如图1所示，为本发明的一个实施例提供的一种量子点膜的结构示意图，该量子点膜包括：基质101，以及至少一个设置于或分散于基质101中、且能够发射C波段的紫外线UVC的紫外量子点102。在图示的示例中，均以多个紫外量子点102为例，显然本领域技术人员可以根据需要具体设置紫外量子点102的数量。
紫外线的杀菌原理是通过紫外线的照射，破坏及改变微生物的DNA(脱氧核糖核酸)结构，使细菌当即死亡或不能繁殖后代，达到杀菌的目的，一般经UVC照射1-2秒就可以达到灭菌效果。紫外光被划分为A波段射线、B波段射线和C波段射线(分别简称为UVA、UVB和UVC)，波长范围分别为400-315nm，315-280nm，280-190nm。其中，UVA和UVB对人体有害，消毒使用的紫外线是C波段紫外线，对人体无害，且可以消灭细菌、病毒、霉菌、单细胞藻等微生物。需要说明的是，波长小于380nm时紫外线是不可见的。因而，由于本发明在量子点膜中增加能够发射UVC的紫外量子点，在屏幕显示时，为显示屏杀菌。同时，由于量子点膜一般位于显示屏内部，其杀菌的效果和功能较稳定，不会随使用时间增加而降低。
当C波段的紫外线UVC的波长范围为200-275nm时，杀菌效果最强且对人体无害，因此，选用这一波长范围时不但可以保证显示质量还可以保证人体的健康。
现有技术中的量子点膜，主要包括能够发射红绿蓝RGB三色光的量子点，本发 明中的量子点膜，除了包括紫外量子点外，还可以与现有技术中发射红绿蓝RGB三色光的量子点相结合。如图2所示，为本发明的另一实施例提供的包含RGB量子点和紫外量子点的量子点膜的结构示意图。该量子点膜还包括：若干分散于基质101中、且能够分别发射红绿蓝三色光的R量子点201、G量子点202和B量子点203。图2中的黑色小球为紫外量子点，图2只是表示一种可能的紫外量子点102与R量子点201、G量子点202和B量子点203的分布位置关系图，但并不代表只有这一种排列形式。下面介绍两种可能的紫外量子点102与R量子点201、G量子点202和B量子点203的分布位置关系。
第一种，R、G、B三种量子点沿量子点膜的厚度方向分层排列。
R量子点201、G量子点202和B量子点203均匀的分层排列。如图2所示，图中R量子点201、G量子点202和B量子点203分别为均匀的一层，且G量子点层位于R量子点层和B量子点层之间。
而本发明实施例中提供的紫外量子点102，其具体的排列位置可以不做限定。在一个示例中，紫外量子点102分布在量子点膜的任意位置，或紫外量子点102为一整层均匀排列的结构。在具体实施时，紫外量子点102可以任意分布在量子点膜中，例如如图所示地位于所有层的最上面，当然也可以位于所有层的最下面。可替代地，紫外量子点102位于R量子点层、G量子点层或B量子点层中的任意一层中，或位于层与层之间。又或者，可以如图2所示，紫外量子点102也呈一整层均匀排列。
第二种，R、G、B三种量子点在同一层中分不同的区域排列。
如图3所示，为本发明的又一实施例提供的包含RGB量子点和紫外量子点的另一种量子点膜的结构示意图。从垂直于膜厚度的方向看，R量子点201、G量子点202和B量子点203在基质101中所占的区域互不重合，且相邻区域之间通过黑矩阵204隔开。图3中，R量子点201、G量子点202和B量子点203分别分布在基质101中不同的区域，且每种量子点所占的区域互不重合。图中黑色的矩形表示黑矩阵204，用于隔开相邻的区域。
而本发明实施例中提供的紫外量子点102，其具体的排列位置可以不做限定。紫外量子点102分布在全部或部分每种量子点所占的区域中。在具体实施时，紫外量子点102可以分布在每种量子点所占的区域中，也可分布在部分每种量子点所占的区域中，可以根据需要进行设定。
上述两种R、G、B三种量子点的排列方式，只是两种可行的方案，并不用于限定本发明，具体的其它排列方式，可以参见现有技术中量子点膜中包含的R、G、B 三种量子点的排列方式。
在具体实施时，本发明实施例提供的紫外量子点102需要让量子点发C波段的紫外线UVC，及需要用到吸收峰为其他光线、荧光发射峰在UVC波段的量子点材料。而具体的制作紫外量子点的材料或者是量子点的制作方法和尺寸等，可以参见现有技术中使量子点发射紫外光的方案，在此不做过多阐述。
紫外量子点102具体的排列位置可以根据需要进行设定，并不仅限于上述提供的排列方式。例如，紫外量子点102可以是在量子点膜中均匀排列，也可以仅设置在显示装置的四周或是显示装置的四个边角处。
基于同一发明构思，本发明实施例还提供了一种显示装置，包括本发明实施例提供的上述量子点膜，该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。对于该显示装置的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的，在此不做赘述，也不应作为对本发明的限制。该显示装置的实施可以参见上述量子点膜的实施例，重复之处不再赘述。
在该显示装置中包含的量子点膜包括能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点时，量子点膜用作彩膜或背光模组。
在具体实施时，包含能够发射红绿蓝三色光的R量子点、G量子点和B量子点的量子点膜，通常可以通过不同的排列方式等实现用量子点膜代替显示装置中的彩膜或背光模组。本发明实施例中提供的量子点膜，可以在R量子点、G量子点和B量子点中设置能够发射UVC的紫外量子点，从而达到在保证显示质量和人体健康的前提下，在屏幕显示时，起到为显示屏杀菌的作用。因而，本发明实施例中提供的量子点膜也可以作为显示装置中彩膜或背光模组。
也就是说，本发明实施例中提供的包含紫外量子点、R量子点、G量子点和B量子点的量子点膜，其具体的设置位置，可以参见现有技术中量子点膜的设置。例如，可以应用在背光模组、阵列基板或者彩膜基板上，都可以实现量子点的发光显示。而具体实现紫外量子点发光的方式，也可以参见现有技术中量子点发射紫外光或者其它单色光的方式。
为了解决触摸显示屏的屏幕易脏和携带细菌、病毒的问题，本发明通过在显示装置的量子点膜中增加了发射特定波长UVC的紫外量子点，达到通过UVC杀菌的功能，而为了使杀菌作用更强，可以结合现有技术中的抗菌膜同时使用，实现显示面板的自清洁和抗菌功能。在一个示例中，该显示装置还包括：抗菌膜。而本发明实施 例提供的抗菌膜的材料、尺寸和制作方法等，可以参见现有技术中的抗菌膜，只要是本身具有杀菌功能，且在UVC照射下能够增强杀菌能力的抗菌膜均可，在此不做过多限定。
本发明实施例提供的抗菌膜的具体位置，也可以不进行限定，可以位于显示装置中的任何位置。由于触摸显示屏的外膜层与人手直接接触，在一个示例中，抗菌膜位于或为显示装置的最外膜层。抗菌膜还可设置在显示装置(如手机)的外壳正反背面或侧面，用于显示装置表面的杀菌和洁净。
同时，上述抗菌膜也可设置在显示装置内部，用于保持显示装置内部的清洁，有利于显示装置内部电路、元器件的保护，但此时，为了不影响其它膜层的正常工作，可以在抗菌膜的上下表面设置两层绝缘层。在一个示例中，抗菌膜位于显示装置内部，且在显示装置的内部还设置有将抗菌膜与其它膜层绝缘的绝缘层。
在具体实施时，为了不增加显示装置的厚度，又能有效的发挥抗菌膜的作用。在一个示例中，抗菌膜的厚度为50-500nm。
为了使显示装置发射的UVC起到很好的杀菌效果，但又不至于影响显示装置的正常显示或是对人体造成伤害，可以适当设置显示装置发射的UVC的量。在一个示例中，显示装置发射的UVC的能量占发射的白光的能量的比例，比日光中UVC的能量所占比例高2％-4％。
综上所述，本发明在量子点膜中增加能够发射C波段的紫外线UVC的紫外量子点，因而，在屏幕显示时，为显示屏杀菌。同时，由于量子点膜位于显示屏内部，其杀菌效果和功能不会随使用时间增加而降低。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (15)

  1. 一种量子点膜，包括：
    基质；和
    至少一个紫外量子点，设置于所述基质中且能够发射波长范围为190-280nm的紫外线。
  2. 如权利要求1所述的量子点膜，其中，所述量子点膜还包括：
    多个分散于所述基质中且能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点。
  3. 如权利要求2所述的量子点膜，其中，所述R量子点、所述G量子点和所述B量子点均匀沿量子点膜的厚度方向分层排列。
  4. 如权利要求3所述的量子点膜，其中，所述至少一个紫外量子点为一整层均匀排列的结构。
  5. 如权利要求4所述的量子点膜，其中，所述至少一个紫外量子点位于所述R量子点、所述G量子点和所述B量子点所在层的最上面或最下面，位于所述R量子点、所述G量子点和所述B量子点所在层中任一层中或任意两个相邻的层之间。
  6. 如权利要求2所述的量子点膜，其中，在垂直于量子点膜的厚度方向的方向上，所述R量子点、所述G量子点和所述B量子点在所述基质中所占的区域互不重合，且相邻区域之间通过黑矩阵隔开。
  7. 如权利要求6所述的量子点膜，其中，所述至少一个紫外量子点分布在全部或部分所述所占的区域中。
  8. 如权利要求1-7中任一项所述的量子点膜，其中，所述至少一个紫外量子点发射的紫外线的波长范围为200-275nm。
  9. 一种显示装置，包括如权利要求1-8中任一项所述的量子点膜。
  10. 如权利要求9所述的显示装置，其中，在所述量子点膜包括能够分别发射红绿蓝三色光的R量子点、G量子点和B量子点时，所述量子点膜用作彩膜或背光模组。
  11. 如权利要求9或10所述的显示装置，其中，所述显示装置还包括：抗菌膜。
  12. 如权利要求11所述的显示装置，其中，所述抗菌膜为所述显示装置的最外 膜层。
  13. 如权利要求11所述的显示装置，其中，所述抗菌膜位于所述显示装置内部，且在显示装置的内部还设置有将所述抗菌膜与显示装置内部的其它膜层绝缘的绝缘层。
  14. 如权利要求11-13中任一项所述的显示装置，其中，所述抗菌膜的厚度为50-500nm。
  15. 如权利要求9-14中任一项所述的显示装置，其中，所述显示装置发射的波长范围为190-280nm的紫外线的能量占发射的白光的能量的比例，比日光中波长范围为190-280nm的紫外线的能量所占比例高2％-4％。
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