WO2021093018A1 - 光纯化层、侧入式背光模组及偏光片 - Google Patents

光纯化层、侧入式背光模组及偏光片 Download PDF

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Publication number
WO2021093018A1
WO2021093018A1 PCT/CN2019/120795 CN2019120795W WO2021093018A1 WO 2021093018 A1 WO2021093018 A1 WO 2021093018A1 CN 2019120795 W CN2019120795 W CN 2019120795W WO 2021093018 A1 WO2021093018 A1 WO 2021093018A1
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Prior art keywords
light
guide plate
light guide
light source
layer
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PCT/CN2019/120795
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English (en)
French (fr)
Inventor
查宝
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Tcl华星光电技术有限公司
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Priority to US16/620,740 priority Critical patent/US11249231B2/en
Publication of WO2021093018A1 publication Critical patent/WO2021093018A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B47/00—Porphines; Azaporphines
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B47/00—Porphines; Azaporphines
    • C09B47/04—Phthalocyanines abbreviation: Pc
    • C09B47/08—Preparation from other phthalocyanine compounds, e.g. cobaltphthalocyanineamine complex
    • C09B47/085—Preparation from other phthalocyanine compounds, e.g. cobaltphthalocyanineamine complex substituting the central metal atom
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/003—Light absorbing elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0056—Means for improving the coupling-out of light from the light guide for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
    • C07F5/02—Boron compounds
    • C07F5/022—Boron compounds without C-boron linkages
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects

Definitions

  • the invention relates to the field of display, in particular to a light purification layer, an edge-type backlight module and a polarizer.
  • the development process of display technology is also the pursuit of color reproduction. From the first generation of sRGB color gamut to the DCI-P3 color gamut used in digital cinema, and even to the next generation of BT.2020, the color gamut is gradually improving.
  • the purpose of the present invention is to provide a light purification layer, an edge-type backlight module and a polarizer, which can absorb cyan light and yellow orange light through the light purification layer to purify the light, which is conducive to the achievement of DCI-P3 chromaticity specifications ,
  • the color gamut can achieve 90%-99% of the DCI-P3 color gamut, and can achieve the ultimate color of the liquid crystal display.
  • the present invention provides a light purification layer, the material of which includes organic absorbing dyes for absorbing cyan light and yellow-orange light in the wavelength range of 560nm-610nm.
  • organic absorption dyes include subphthalocyanine dyes, the general formula of which is as follows:
  • R1-R7 are any one of F, Cl, Br, I or CN in any one; or any of R1-R7 is ClO 4 -, CF 3 SO 3 -, CF 2 HSO 3 - or Any one of CFH 2 SO 3 - ; or any one of R1-R7 is a non-conjugated structure, including straight chain alkanes, branched alkanes, alkoxy straight or branched alkanes, containing Ester group chain or F-substituted alkane derivative; or any one of R1-R7 is a conjugated structure connected by an alkoxy group and an ester group, and the conjugated structure contains a heterocyclic ring Compounds, the heterocyclic compounds include five-membered heterocyclic compounds, six-membered heterocyclic compounds, benzoheterocyclic compounds and fused-ring heterocyclic compounds, and the five-membered heterocyclic compounds include furan, thiophene, pyrrole,
  • the light purification layer is made by uniformly dispersing the subphthalocyanine dye in a photoresist-like mixture composed of acrylic resin, acrylic monomer and photoinitiator or a pressure-sensitive adhesive.
  • the light purification layer is produced by knife coating or coating.
  • the film thickness of the light purification layer is 500 nm to 20,000 nm.
  • the present invention also provides a side-lit backlight module, which includes a stacked back plate, a reflective sheet, a light guide plate, a side light source, and an optical film set; specifically, the reflective sheet is provided on the back plate;
  • the light guide plate is arranged on the reflective sheet, and the lower surface of the light guide plate is provided with a diffuse reflection layer;
  • the side light source is arranged on the back plate and is arranged on one side of the light guide plate;
  • the side light source The light emitting surface of the light guide plate faces the light guide plate to provide a light source;
  • the optical film is assembled on the light guide plate; wherein, the light purification layer is further included between the side light source and the light guide plate, or
  • the light guide plate and the diffuse reflection layer further include the light purification layer, or the light guide plate includes the material of the light purification layer.
  • the side light source includes a substrate, a flexible circuit board, a light-emitting chip, and a quantum dot light-emitting layer;
  • the flexible circuit board is arranged on the side of the substrate facing the light guide plate;
  • the light-emitting chip is arranged on the flexible The side of the circuit board away from the substrate;
  • the quantum dot light-emitting layer is arranged on the side of the light-emitting chip away from the flexible circuit board.
  • the side-lit backlight module further includes a light source reflecting plate and light-shielding glue;
  • the light source reflecting plate is arranged above the position where the side light source and the light guide plate meet, and is used to reflect the side light source Light;
  • the light-shielding glue is arranged above the side light source and extends to cover the surface of the back plate, the light source reflector and part of the optical film set.
  • the optical film set includes a diffusion sheet, a lower brightness enhancement sheet, and an upper brightness enhancement sheet stacked in order from bottom to top; the diffusion sheet is disposed on the light guide plate; the lower brightness enhancement sheet is disposed on the diffuser On the film; the upper brightness enhancement sheet is arranged on the lower brightness enhancement sheet.
  • the present invention also provides a polarizer, which includes a peeling protective film, an adhesive layer, a first protective layer, a polarizing sub-layer, a second protective layer, and a surface protective film stacked in sequence from bottom to top; specifically, the adhesive The adhesive layer is provided on the peeling protective film; the first protective layer is provided on the adhesive layer; the polarizing sub-layer is provided on the first protective layer; the second protective layer is provided on the The polarizing sub-layer; the surface protective film is provided on the second protective layer; wherein, the light purification layer is also provided between any two adjacent film layers.
  • the beneficial effect of the present invention is to provide a light purification layer, an edge-type backlight module and a polarizer, which can absorb cyan light and yellow orange light through the light purification layer to purify the light, which is beneficial to the DCI-P3 chromaticity specification. It can achieve a wide color gamut. The color gamut can achieve 90%-99% of the DCI-P3 color gamut, and the process is simple, its cost is low, and the thermal stability of the light purification layer is high. A simple and feasible method for the ultimate color of LCD monitors.
  • FIG. 1 is a schematic structural diagram of an edge-type backlight module according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of another edge-type backlight module in an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the structure of a polarizer in an embodiment of the present invention.
  • Back plate 2. Reflective sheet, 3. Light guide plate, 4. Side light source,
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • installed can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • a light purification layer is provided, the material of which includes organic absorbing dyes for absorbing cyan light and yellow-orange light in the wavelength range of 560nm-610nm.
  • the organic absorption dyes include subphthalocyanine dyes, and the general chemical structure of the dye is as follows:
  • R1-R7 are any one of F, Cl, Br, I or CN in any one; or any of R1-R7 is ClO 4 -, CF 3 SO 3 -, CF 2 HSO 3 - or Any one of CFH 2 SO 3 - ; or any one of R1-R7 is a non-conjugated structure, including straight chain alkanes, branched alkanes, alkoxy straight or branched alkanes, containing Ester group chain or F-substituted alkane derivative; or any one of R1-R7 is a conjugated structure connected by an alkoxy group and an ester group, and the conjugated structure contains a heterocyclic ring Compounds, the heterocyclic compounds include five-membered heterocyclic compounds, six-membered heterocyclic compounds, benzoheterocyclic compounds and fused-ring heterocyclic compounds, and the five-membered heterocyclic compounds include furan, thiophene, pyrrole,
  • the light purification layer is made by uniformly dispersing the subphthalocyanine dye in a photoresist-like mixture or pressure-sensitive adhesive composed of acrylic resin, acrylic monomer and photoinitiator.
  • the light purification layer is produced by knife coating or coating.
  • the light purification layer is produced by knife coating a mixture of the subphthalocyanine dye and the pressure-sensitive adhesive or coating a mixture of the subphthalocyanine dye and the photoresist-like mixture.
  • the film thickness of the light purification layer is 500nm-20000nm, preferably 800nm, 1000nm, 13000nm, 15000nm, 18000nm.
  • one embodiment of the present invention also provides an edge-lit backlight module 10, which includes a laminated back plate 1, a reflective sheet 2, a light guide plate 3, a side light source 4, and an optical film set 5;
  • the material of the back plate 1 includes any one of iron, aluminum, copper, stainless steel, aluminum alloy, hard plastic or injection molded colloid, preferably iron;
  • the reflective sheet 2 is provided on the The backplane 1;
  • the light guide plate 3 is provided on the reflective sheet 2, a diffuse reflection layer 31 is provided on the lower surface of the light guide plate 3, the diffuse reflection layer 31 includes a plurality of dots 311;
  • the side light source 4 is arranged on the back plate 1 and arranged on one side of the light guide plate 3; the light emitting surface of the side light source 4 faces the light guide plate 3 to provide a light source;
  • the optical film set 5 is arranged at all The light guide plate 3; wherein, between the side light source 4 and the light guide plate 3, the light purification layer 100 is further included.
  • the light purification layer 100 is disposed between the light guide plate 3 and the diffuse reflection layer.
  • the white backlight emitted by the side light source 4 passes through the dots 311, the red light and blue light in the white backlight can be purified to achieve a wide color gamut.
  • the light guide plate 3 includes the material of the light purification layer 100, which can also realize the purification of the red light and the blue light in the white backlight, so as to realize a wide color gamut.
  • the side light source 4 includes a substrate 41, a flexible circuit board 42, a light-emitting chip 43, and a quantum dot light-emitting layer 44;
  • the flexible circuit board 42 is disposed on the substrate 41 facing the guide One side of the light board 3;
  • the light-emitting chip 43 is arranged on the side of the flexible circuit board 42 away from the substrate 41;
  • the quantum dot light-emitting layer 44 is arranged on the light-emitting chip 43 away from the flexible circuit board 42 One side.
  • the light-emitting chip 43 is preferably a blue light-emitting diode, which excites yellow phosphor to form a white backlight.
  • the color point of blue light can be fine-tuned by the blue light emitting diodes in the edge-lit backlight module 10, so as to achieve the color point specification of blue light in the DCI-P3 color gamut.
  • the side-lit backlight module 10 further includes a light source reflector 6 and a light-shielding glue 7;
  • the light source reflector 6 is provided on the side light source 4 and all Above the connecting position of the light guide plate 3, it is used to reflect the light of the side light source 4;
  • the light-shielding glue 7 is arranged above the side light source 4 and extends to cover the upper surface of the back plate 1 and the light source reflecting plate 6 and part of the optical film set 5, which can better shield the light emitted by the side light source 4 and avoid light leakage.
  • the optical film set 5 includes a diffusion sheet 51, a lower brightness enhancement sheet 52 and an upper brightness enhancement sheet 53.
  • the diffusion sheet 51 is provided on the light guide plate 3; the lower brightness enhancement sheet 52 is provided on the diffusion sheet 51; the upper brightness enhancement sheet 53 is provided on the lower brightness enhancement sheet 52.
  • the optical film set 5 is used to enhance the brightness and uniformity of the light source.
  • the diffusion sheet 51 can enhance the brightness of the light source.
  • the lower brightness enhancement sheet 52 diffuses light to provide a uniform surface light source.
  • the upper brightness enhancement sheet 53 can also enhance the brightness of the light source.
  • the light-emitting effect of the edge-lit backlight module 10 will directly affect its visual effect.
  • one of the embodiments of the present invention also provides a polarizer 20, which includes a peeling protective film 21, an adhesive layer 22, a first protective layer 23, and a polarizing sub-layer 24 stacked in sequence from bottom to top.
  • the second protective layer 25 and the surface protective film 26 specifically, the adhesive layer 22 is provided on the peeling protective film 21; the first protective layer 23 is provided on the adhesive layer 22;
  • the polarizing sub-layer 24 is disposed on the first protective layer 23;
  • the second protective layer 25 is disposed on the polarizing sub-layer 24;
  • the surface protective film 26 is disposed on the second protective layer 25;
  • the light purification layer 100 is further provided between any two adjacent film layers mentioned above. It is understandable that FIG. 3 schematically shows that the light purification layer 100 may be located between any two adjacent film layers described above, instead of being limited to the light purification layer 100 being located only on the adhesive layer 22 And the first protective layer 23.
  • the light purification layer 100 when the light purification layer 100 is made by uniformly dispersing the subphthalocyanine dye in the pressure-sensitive adhesive, it can replace the adhesive layer, which can also satisfy the effect of adhesion.
  • the beneficial effect of the present invention is to provide a light purification layer, an edge-type backlight module and a polarizer, which can absorb cyan light and yellow orange light through the light purification layer to purify the light, which is beneficial to the DCI-P3 chromaticity specification. It can achieve a wide color gamut. The color gamut can achieve 90%-99% of the DCI-P3 color gamut, and the process is simple, its cost is low, and the thermal stability of the light purification layer is high. A simple and feasible method for the ultimate color of LCD monitors.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Organic Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种光纯化层(100)、侧入式背光模组(10)及偏光片(20)。光纯化层(100)的材质包括有机吸收染料，用于吸收波长范围为560-610nm的青绿光和黄橙光。侧入式背光模组(10)包括层叠设置的背板(1)、反射片(2)、导光板(3)、侧光源(4)及光学膜片组(5)；在侧光源(4)和导光板(3)之间，或者在导光板(3)和漫反射层(31)之间还包括光纯化层(100)，或者导光板(3)包含光纯化层(100)的材质。偏光片(20)包括光纯化层(100)。

Description

光纯化层、侧入式背光模组及偏光片 技术领域
本发明涉及显示领域，尤其涉及一种光纯化层、侧入式背光模组及偏光片。
背景技术
显示技术的发展过程也是对色彩再现的能力的追求，从第一代的sRGB色域到应用于数字影院的DCI-P3色域，甚至到下一代的BT.2020，色域都在逐步提升。
目前大部分的液晶显示的色彩表现都集中在sRGB的色度规格内，慢慢的呈现往DCI-P3规格的过渡过程，目前实现DCI-P3的99％规格的色彩表现还需要依赖量子点的方式来实现，普通的LED背光还是无法达到这一规格，而量子点中含有重金属及光转化效率及成本等诸多因素，一直是制约着液晶显示器对色彩规格更高的DCI-P3(99％)发展瓶颈。
技术问题
本发明的目的在于，提供一种光纯化层、侧入式背光模组及偏光片，能够通过光纯化层吸收青绿光和黄橙光对光线进行纯化，有利于DCI-P3色度规格的达成，从而可以实现广色域，其色域可实现DCI-P3色域的90％-99％，可实现液晶显示器极致色彩。
技术解决方案
为实现上述目的，本发明提供一种光纯化层，其材质包括有机吸收染料，用于吸收波长范围为560nm-610nm的青绿光和黄橙光。
进一步地，所述有机吸收染料包括亚酞菁类染料，其化学结构通式如下：
Figure PCTCN2019120795-appb-000001
其中，R1-R7中任一项为F、Cl、Br、I或CN中的任一种；或者R1-R7中任一项为ClO 4 -、CF 3SO 3 -、CF 2HSO 3 -或CFH 2SO 3 -中的任一种；或者R1-R7中任一项为非共轭的结构，包括直链烷烃、有支链的烷烃、烷氧基的直链或者支链的烷烃、含有酯基的链状物或F取代烷烃衍生物中的任一种；或者R1-R7中任一项为通过烷氧基以及酯基相连接的共轭结构，所述共轭结构含有杂环的化合物，所述杂环化合物包括五元杂环化合物、六元杂环化合物、苯并杂环化合物及稠环杂环化合物，所述五元杂环化合物包括呋喃、噻吩、吡咯、噻唑或咪唑，所述六元杂环化合物包括吡啶、吡嗪、嘧啶或哒嗪，所述稠环杂环化合物包括吲哚、喹啉、蝶啶或吖啶。
进一步地，所述光纯化层通过将所述亚酞菁染料均匀分散在丙烯酸树脂、丙烯酸单体及光起始剂组成的类光刻胶混合物或者压敏胶中制作。
进一步地，所述光纯化层通过刮涂或者涂布的方式制作。
进一步地，所述光纯化层的膜层厚度为500nm-20000nm。
本发明还提供一种侧入式背光模组，包括层叠设置的背板、反射片、导光板、侧光源以及光学膜片组；具体地讲，所述反射片设于所述背板上；所述导光板设于所述反射片上，所述导光板的下表面设有一漫反射层；所述侧光源设于所述背板上并设于所述导光板的一侧；所述侧光源的出光面朝向所述导光板用以提供光源；所述光学膜片组设于所述导光板上；其中，在所述侧光源和所述导光板之间还包括所述光纯化层，或者在所述导光板和所述漫反射层之间还包括所述光纯化层，或者所述导光板包含所述光纯化层的材质。
进一步地，所述侧光源包括基板、柔性电路板、发光芯片以及量子点发光层；所述柔性电路板设于所述基板朝向所述导光板的一侧；所述发光芯片设于所述柔性电路板背离所述基板的一侧；所述量子点发光层设于所述发光芯片背离所述柔性电路板的一侧。
进一步地，所述侧入式背光模组还包括光源反射板以及遮光胶；所述光源反射板设于所述侧光源及所述导光板相接位置的上方，用于反射所述侧光源的光线；所述遮光胶设于所述侧光源上方且延伸覆盖所述背板上表面、所述光源反射板及部分所述光学膜片组。
进一步地，所述光学膜片组包括从下至上依次层叠设置的扩散片、下增光片以及上增光片；所述扩散片设于所述导光板上；所述下增光片设于所述扩散片上；所述上增光片设于所述下增光片上。
本发明还提供一种偏光片，包括从下至上依次层叠设置的剥离保护膜、粘着胶层、第一保护层、偏光子层、第二保护层以及表面保护膜；具体地讲，所述粘着胶层设于所述剥离保护膜上；所述第一保护层设于所述粘着胶层上；所述偏光子层设于所述第一保护层上；所述第二保护层设于所述偏光子层上；所述表面保护膜设于所述第二保护层上；其中，在上述任意相邻两个膜层之间还设有所述光纯化层。
有益效果
本发明的有益效果在于，提供一种光纯化层、侧入式背光模组及偏光片，能够通过光纯化层吸收青绿光和黄橙光对光线进行纯化，有利于DCI-P3色度规格的达成，从而可以实现广色域，其色域可实现DCI-P3色域的90％-99％，并且工艺制程简单，其成本低，光纯化层的热稳定性高，设置光纯化层是实现液晶显示器极致色彩的一种简单可行的方法。
附图说明
图1为本发明实施例的一种侧入式背光模组的结构示意图；
图2为本发明实施例中另一种侧入式背光模组的结构示意图；
图3为本发明实施例中一种偏光片的结构示意图。
图中部件标识如下：
1、背板，2、反射片，3、导光板，4、侧光源，
5、光学膜片组，6、光源反射板，7、遮光胶，
10、侧入式背光模组，20、偏光片，21、剥离保护膜，
22、粘着胶层，23、第一保护层，24、偏光子层，
25、第二保护层，26、表面保护膜，31、漫反射层，
311、网点，41、基板，42、柔性电路板，
43、发光芯片，44、量子点发光层，51、扩散片，
52、下增光片，53、上增光片，100、光纯化层。
本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明 所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在附图中，为了清楚，层和区域的厚度被夸大。例如，为了便于描述，附图中的元件的厚度和尺寸被任意地示出，因此，所描述的技术范围不由附图限定。
本发明其中一实施例中提供一种光纯化层，其材质包括有机吸收染料，用于吸收波长范围为560nm-610nm的青绿光和黄橙光。
本实施例中，所述有机吸收染料包括亚酞菁类染料，其化学结构通式如下：
Figure PCTCN2019120795-appb-000002
其中，R1-R7中任一项为F、Cl、Br、I或CN中的任一种；或者R1-R7中任一项为ClO 4 -、CF 3SO 3 -、CF 2HSO 3 -或CFH 2SO 3 -中的任一种；或者R1-R7中任一项为非共轭的结构，包括直链烷烃、有支链的烷烃、烷氧基的直链或者支链的烷烃、含有酯基的链状物或F取代烷烃衍生物中的任一种；或者R1-R7中任一项为通过烷氧基以及酯基相连接的共轭结构，所述共轭结构含有杂环的化合物，所述杂环化合物包括五元杂环化合物、六元杂环化合物、苯并杂环化合物及稠环杂环化合物，所述五元杂环化合物包括呋喃、噻吩、吡咯、噻唑或咪唑，所述六元杂环化合物包括吡啶、吡嗪、嘧啶或哒嗪，所述稠环杂环化合物包括吲哚、喹啉、蝶啶或吖啶。
本实施例中，所述光纯化层通过将所述亚酞菁染料均匀分散在丙烯酸树脂、丙烯酸单体及光起始剂组成的类光刻胶混合物或者压敏胶中制作。
本实施例中，所述光纯化层通过刮涂或者涂布的方式制作。具体的，所述光纯化层通过刮涂所述亚酞菁染料及所述压敏胶的混合物或者涂布所述亚酞菁染料及所述类光刻胶混合物的混合物的方式制作。
本实施例中，所述光纯化层的膜层厚度为500nm-20000nm，优选为800nm、1000nm、13000nm、15000nm、18000nm。
请参阅图1所示，本发明其中一实施例中还提供一种侧入式背光模组10，包括层叠设置的背板1、反射片2、导光板3、侧光源4以及光学膜片组5；具体地讲，所述背板1的材质包括铁、铝、铜、不锈钢、铝合金、硬质塑料或注塑胶体中的任一种，优选为铁；所述反射片2设于所述背板1上；所述导光板3设于所述反射片2上，所述导光板3的下表面设有一漫反射层31，所述漫反射层31包括多个网点311；所述侧光源4设于所述背板1上并设于所述导光板3的一侧；所述侧光源4的出光面朝向所述导光板3用以提供光源；所述光学膜片 组5设于所述导光板3上；其中，在所述侧光源4和所述导光板3之间还包括所述光纯化层100。
请参阅图2所示，在其他实施例中，所述光纯化层100设于所述导光板3和所述漫反射层之间。当所述侧光源4发射出的白色背光经过所述网点311的时候，可实现对白色背光中的红光和蓝光实现提纯，而实现广色域。
在其他实施例中，所述导光板3包含所述光纯化层100的材质，也可实现对白色背光中的红光和蓝光实现提纯，而实现广色域。
请参阅图1、图2所示，所述侧光源4包括基板41、柔性电路板42、发光芯片43以及量子点发光层44；所述柔性电路板42设于所述基板41朝向所述导光板3的一侧；所述发光芯片43设于所述柔性电路板42背离所述基板41的一侧；所述量子点发光层44设于所述发光芯片43背离所述柔性电路板42的一侧。
所述发光芯片43优选为蓝光发光二极管，其激发黄色荧光粉而形成的白色背光。
其中，蓝光的色点可以通过所述侧入式背光模组10中的蓝光发光二极管进行微调，可达成DCI-P3色域中蓝光的色点规格。
请参阅图1、图2所示，本实施例中，所述侧入式背光模组10还包括光源反射板6以及遮光胶7；所述光源反射板6设于所述侧光源4及所述导光板3相接位置的上方，用于反射所述侧光源4的光线；所述遮光胶7设于所述侧光源4上方且延伸覆盖所述背板1上表面、所述光源反射板6及部分所述光学膜片组5，这样能够更好的遮蔽所述侧光源4发出的光线，避免漏光。
请参阅图1、图2所示，本实施例中，所述光学膜片组5包括扩散片51、下增光片52和上增光片53。具体地讲，所述扩散片51设于所述导光板3上；所述下增光片52设于所述扩散片51上；所述上增光片53设于所述下增光片52上。所述光学膜片组5用于增强光源的亮度和均匀性。所述扩散片51可增强光源的亮度。所述下增光片52对光线扩散以提供一个均匀的面光源。所述上增光片53也可增强光源的亮度。所述侧入式背光模组10的发光效果将直接影响到其视觉效果。
请参阅图3所示，本发明其中一实施例中还提供一种偏光片20，包括从下至上依次层叠设置的剥离保护膜21、粘着胶层22、第一保护层23、偏光子层24、第二保护层25以及表面保护膜26；具体地讲，所述粘着胶层22设于所述剥离保护膜21上；所述第一保护层23设于所述粘着胶层22上；所述偏光子层24设于所述第一保护层23上；所述第二保护层25设于所述偏光子层24上；所述表面保护膜26设于所述第二保护层25上；其中，在上述任意相邻两个膜层之间还设有所述光纯化层100。可以理解的是，在图3中示意性地表示所述光纯化层100可位于上述任意相邻两个膜层之间，而不是限定为所述光纯化层100仅位于所述粘着胶层22和所述第一保护层23之间。
在其他实施例中，所述光纯化层100通过将所述亚酞菁染料均匀分散在者压敏胶中制作时，可替代所述粘着胶层，同样可满足粘接的作用效果。
本发明的有益效果在于，提供一种光纯化层、侧入式背光模组及偏光片，能够通过光纯化层吸收青绿光和黄橙光对光线进行纯化，有利于DCI-P3色度规格的达成，从而可以实现广色域，其色域可实现DCI-P3色域的90％-99％，并且工艺制程简单，其成本低，光纯化层的热稳定性高，设置光纯化层是实现液晶显示器极致色彩的一种简单可行的方法。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (12)

  1. 一种光纯化层，其中，其材质包括有机吸收染料，用于吸收波长范围为560nm-610nm的青绿光和黄橙光。
  2. 根据权利要求1所述的光纯化层，其中，所述有机吸收染料包括亚酞菁类染料，其化学结构通式如下：
    Figure PCTCN2019120795-appb-100001
    其中，R1-R7中任一项为F、Cl、Br、I或CN中的任一种；或者
    R1-R7中任一项为ClO 4 -、CF 3SO 3 -、CF 2HSO 3 -或CFH 2SO 3 -中的任一种；或者
    R1-R7中任一项为非共轭的结构，包括直链烷烃、有支链的烷烃、烷氧基的直链或者支链的烷烃、含有酯基的链状物或F取代烷烃衍生物中的任一种；或者
    R1-R7中任一项为通过烷氧基以及酯基相连接的共轭结构，所述共轭结构含有杂环的化合物，所述杂环化合物包括五元杂环化合物、六元杂环化合物、苯并杂环化合物及稠环杂环化合物，所述五元杂环化合物包括呋喃、噻吩、吡咯、噻唑或咪唑，所述六元杂环化合物包括吡啶、吡嗪、嘧啶或哒嗪，所述稠环杂环化合物包括吲哚、喹啉、蝶啶或吖啶。
  3. 根据权利要求2所述的光纯化层，其中，所述光纯化层通过将所述亚酞菁染料均匀分散在丙烯酸树脂、丙烯酸单体及光起始剂组成的类光刻胶混合物或者压敏胶中制作。
  4. 根据权利要求3所述的光纯化层，其中，所述光纯化层通过 刮涂或者涂布的方式制作。
  5. 根据权利要求1所述的光纯化层，其中，所述光纯化层的膜层厚度为500nm-20000nm。
  6. 一种侧入式背光模组，其包括：
    背板；
    反射片，设于所述背板上；
    导光板，设于所述反射片上，所述导光板的下表面设有一漫反射层；
    侧光源，设于所述背板上并设于所述导光板的一侧；所述侧光源的出光面朝向所述导光板用以提供光源；以及
    光学膜片组，设于所述导光板上；
    其中，在所述侧光源和所述导光板之间还包括权利要求3所述的光纯化层。
  7. 一种侧入式背光模组，其包括：
    背板；
    反射片，设于所述背板上；
    导光板，设于所述反射片上，所述导光板的下表面设有一漫反射层；
    侧光源，设于所述背板上并设于所述导光板的一侧；所述侧光源的出光面朝向所述导光板用以提供光源；以及
    光学膜片组，设于所述导光板上；
    其中，在所述导光板和所述漫反射层之间还包括权利要求3所述的光纯化层。
  8. 一种侧入式背光模组，其包括：
    背板；
    反射片，设于所述背板上；
    导光板，设于所述反射片上，所述导光板的下表面设有一漫反射层；
    侧光源，设于所述背板上并设于所述导光板的一侧；所述侧光源 的出光面朝向所述导光板用以提供光源；以及
    光学膜片组，设于所述导光板上；
    其中，所述导光板包含权利要求3所述的光纯化层的材质。
  9. 根据权利要求6所述的侧入式背光模组，其中，所述侧光源包括：
    基板；
    柔性电路板，设于所述基板朝向所述导光板的一侧；
    发光芯片，设于所述柔性电路板背离所述基板的一侧；以及
    量子点发光层，设于所述发光芯片背离所述柔性电路板的一侧。
  10. 根据权利要求6所述的侧入式背光模组，其中，还包括：
    光源反射板，设于所述侧光源及所述导光板相接位置的上方，用于反射所述侧光源的光线；以及
    遮光胶，设于所述侧光源上方且延伸覆盖所述背板上表面、所述光源反射板及部分所述光学膜片组。
  11. 根据权利要求6所述的侧入式背光模组，其中，所述光学膜片组包括：
    扩散片，设于所述导光板上；
    下增光片，设于所述扩散片上；以及
    上增光片，设于所述下增光片上。
  12. 一种偏光片，其中，包括：
    剥离保护膜；
    粘着胶层，设于所述剥离保护膜上；
    第一保护层，设于所述粘着胶层上；
    偏光子层，设于所述第一保护层上；
    第二保护层，设于所述偏光子层上；以及
    表面保护膜，设于所述第二保护层上；
    其中，在上述任意相邻两个膜层之间还设有权利要求1所述的光纯化层。
PCT/CN2019/120795 2019-11-14 2019-11-26 光纯化层、侧入式背光模组及偏光片 WO2021093018A1 (zh)

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