WO2023071459A1 - 背光模组及显示屏 - Google Patents

背光模组及显示屏 Download PDF

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Publication number
WO2023071459A1
WO2023071459A1 PCT/CN2022/113718 CN2022113718W WO2023071459A1 WO 2023071459 A1 WO2023071459 A1 WO 2023071459A1 CN 2022113718 W CN2022113718 W CN 2022113718W WO 2023071459 A1 WO2023071459 A1 WO 2023071459A1
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WO
WIPO (PCT)
Prior art keywords
blue light
film
backlight module
particle material
diffusion
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PCT/CN2022/113718
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English (en)
French (fr)
Inventor
李泽龙
季洪雷
付文静
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惠州视维新技术有限公司
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Publication of WO2023071459A1 publication Critical patent/WO2023071459A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/44—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the coatings, e.g. passivation layer or anti-reflective coating

Definitions

  • the invention relates to the field of display technology, in particular to a backlight module and a display screen.
  • LED light sources are used in TV backlights.
  • the principle of light emission is that the chip emits high-energy short-wave blue light to excite phosphors to emit light.
  • the blue light has short wavelength, high peak, and high energy. It is not absorbed by the cornea and lens, but penetrates the cornea and lens and directly enters the macula and retina, causing damage to macular photoreceptor cells and the decline of retinal pigment epithelial cells, causing macular disease, Cataracts and glaucoma can cause damage to human eyes, and peak short-wave blue light exposure can cause cells to produce oxidative stress and cytotoxins, reduce the antioxidant capacity of fibroblasts, and cause insomnia and visual fatigue. Therefore, how to solve the problem of eye damage caused by peak short-wave blue light has become the key to a healthy display.
  • the main purpose of the present invention is to provide a backlight module and a display screen.
  • a backlight module which includes:
  • optical film group is stacked on the back plate and covered on the light-emitting surface of the light-emitting element;
  • the surface of the package is attached with a blue light filter film containing blue light filter particle material, or the optical film group is mixed with blue light filter particle material.
  • the blue light filter particle material at least includes azo, methine, ketimide, azo metal complex, naphthalimide, nitrodiphenylamine, aminoketone One or more of , nitro, o-aniline.
  • the rejection rate of the blue light filtering particle material is 20%-24%.
  • the optical film set includes:
  • the diffusion film, the reinforcement film and the composite film arranged on the back plate are stacked in sequence, wherein the diffusion film or the reinforcement film or the composite film is mixed with the blue light filtering particle material.
  • the diffusion film includes a blue light filtering particle material, diffusion particles and a substrate, the diffusion particles are coated on the upper surface of the substrate, and the diffusion particles are mixed with the blue light filtering particle material applied to the lower surface of the substrate.
  • the optical film set includes a reinforcement film and a composite film sequentially stacked on the back plate;
  • the backlight module further includes a diffusion plate, the diffusion plate is arranged between the enhancement film and the back plate, wherein the diffusion plate or the enhancement film or the composite film is mixed with the filter Blu-ray particle material.
  • the composite film is a diaphragm formed by a diffuser and a prism, or the composite film is a diaphragm formed by a microlens and a prism, or the composite film is a diaphragm formed by a diffuser , a diaphragm formed by a core layer and two prisms.
  • the thickness of the blue light filter film is 0.1um-50um.
  • the backlight source further includes:
  • connection seat the connection seat has an accommodating cavity
  • the light-emitting element is placed in the accommodating cavity and electrically connected to the connecting seat, and the package is filled in the accommodating cavity.
  • the backlight light source further includes a connecting wire, one end of the connecting wire is connected to the light-emitting element, and the other end of the connecting wire is connected to the connecting seat.
  • the light emitting element is a blue light chip, and the emission wavelength of the blue light chip is 457.5nm-460nm.
  • the blue light filter film includes a first protective coating, a second protective coating, and a blue light filter layer disposed between the first protective coating and the second protective coating, The blue light filtering particle material is mixed in the blue light filtering layer.
  • the first protective coating and the second protective coating are AR coatings.
  • an embodiment of the present invention further provides a display screen, which includes the above-mentioned backlight module.
  • the invention provides a backlight module and a display screen.
  • the backlight module includes a backplane and a backlight light source arranged in the backplane.
  • a package; an optical film group, the optical film group is stacked on the back plate, and is covered on the light-emitting surface of the light-emitting component; wherein, the surface of the package is mounted with blue light filter particles
  • the blue light filter film of the material, or, the blue light filter particle material is mixed in the optical film group.
  • the blue light filter film is arranged at the package of the light-emitting element, or the blue light filter particle material is mixed in the optical film group, so that the blue light filter particle material can filter
  • the peak short-wave blue light in the light emitted by the light-emitting element is removed to achieve the purpose of eye protection, thereby increasing the half-wave width, keeping the brightness and color gamut basically unchanged, and having good visual effects.
  • FIG. 1 is a schematic structural view of a backlight module according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a backlight light source according to an embodiment of the present invention.
  • Fig. 3 is a schematic structural view of a blue light filter film according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a reflective film according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural view of an enhanced film according to an embodiment of the present invention.
  • Fig. 6 is the structural representation of the composite membrane (DOP) of the embodiment of the present invention.
  • Fig. 7 is the structural representation of the composite membrane (MOP) of the embodiment of the present invention.
  • Fig. 8 is a schematic structural diagram of a diffuser plate according to an embodiment of the present invention.
  • the invention provides a backlight module.
  • the backlight module includes a backplane 1 and a backlight source 2 disposed in the backplane 1, the backlight source 2 has a light-emitting element 21 and is covered with The package 22 on the periphery of the light-emitting element 21; the optical film group 3, the optical film group 3 is stacked on the back plate 1, and is covered on the light-emitting surface of the light-emitting element 21; wherein, the The surface of the package 22 is attached with a blue light filter film 23 containing blue light filter particle material, or the optical film set 3 is mixed with blue light filter particle material.
  • the blue light filter film 23 is provided at the package 22 of the light-emitting element 21, or the blue light filter particle material is mixed in the optical film group 3, so as to pass through the filter
  • the blue light particle material filters out the peak short-wave blue light in the light emitted by the light-emitting element 21 to protect the eyes, thereby increasing the half-wave width, and keeping the brightness and color gamut basically unchanged, and the visual effect is good.
  • the light emitting element 21 is a blue light chip, and the emission wavelength of the blue light chip is 457.5nm-460nm. That is, the blue light filter film 23 is provided at the package part 22 of the light emitting element 21, and the blue light filter film 23 can directly filter out the hazards of peak short-wave blue light from the light emitting element 21 to maintain human eye health.
  • the packaging component 22 is packaging glue.
  • the encapsulation glue plays the role of isolating the air.
  • the encapsulation glue in this embodiment can be selected as silica gel, which has the advantages of heat resistance, UV ultraviolet light resistance, water vapor resistance, cold and heat shock resistance, and low thermal expansion coefficient.
  • the above-mentioned encapsulation glue may also include but not limited to epoxy, silicone, polyurethane, and ultraviolet light-curable encapsulants, etc., which are not limited here.
  • the light-emitting element 21 is a pure blue chip LED; or, YAG/KSF phosphor powder can also be mixed in the package 22, at this time, the The light-emitting element 21 is a blue chip LED that excites YAG/KSF phosphor, which is not limited here.
  • the backlight light source 2 also includes a connecting seat 24 , and the connecting seat 24 has an accommodating cavity 25 therein, and the light-emitting element 21 is placed in the accommodating cavity 25 and connected 24 are electrically connected, and the package 22 is filled in the cavity 25 .
  • the connecting seat 24 plays the role of supporting, conducting, dissipating heat and protecting the chip.
  • the connecting seat 24 can be made of PCT material, or the connecting seat 24 can also be made of PA, EMC, PPA, SMC and other materials are not limited here.
  • the backlight light source includes a connection wire 26, one end of the connection wire 26 is connected to the light-emitting element 21, and the connection wire 26 The other end is connected with the connecting seat 24.
  • connection wire 26 is a gold wire, and the above-mentioned gold wire has the characteristics of good electrical conductivity, high ductility, and good weldability.
  • the connecting wire 26 may also be other types of connecting wires, which are not limited here.
  • the thickness of the blue light filter film 23 is 0.1um-50um.
  • the blue light filter film 23 is a film that is sprayed or coated with a blue light filter particle material on the surface of the package 22.
  • the blue light filter particle film 23 includes a first protective coating 231, a second protective coating 232, and The blue light filtering layer 233 in between, the blue light filtering particle material is mixed in the blue light filtering layer 233 .
  • the first protective coating 231 and the second protective coating 232 are both AR coatings, and the above-mentioned AR coatings can reduce the intensity of reflected light and increase transmittance, thereby reducing brightness loss; and the blue light filter The layer 233 can weaken the blue light and reduce its transmittance, thereby reducing the harm of the peak short-wave blue light to human eyes, and the gap between the package 22 and the blue light filter film 233 is filled with encapsulation glue.
  • the blue light filter film 233 can be formed by UV curing, baking, drying and other processes, and UV curing, baking, drying and other processes are exemplary processes, which are not carried out in this embodiment. Improve.
  • the optical film group 3 includes a diffusion film 31, a reinforcement film 32 and a composite film 33 which are sequentially stacked on the back plate, wherein the diffusion film 31 is mixed with The blue light filtering particle material, or the enhanced film 32 is mixed with the blue light filtering particle material, or the composite film 33 is mixed with the blue light filtering particle material.
  • the above-mentioned blue light filtering particle material can be coated on the surface of the diffusion film 31 or the enhancement film 32 or the composite film 33, for example, the above-mentioned blue light filtering particle material is coated on the surface of the substrate and dried Oven drying, wherein the operating temperature of the oven is 60°C to 130°C, and then UV ultraviolet light is irradiated and cured, so that the substrate mixed with the blue light filter particle material is hardened and formed, so as to obtain at least one side mixed with the blue light filter material
  • the diffusion membrane 31 or the reinforcement membrane 32 or the composite membrane 33 for the function for example, the above-mentioned blue light filtering particle material is coated on the surface of the substrate and dried Oven drying, wherein the operating temperature of the oven is 60°C to 130°C, and then UV ultraviolet light is irradiated and cured, so that the substrate mixed with the blue light filter particle material is hardened and formed, so as to obtain at least one side mixed with the blue light filter material
  • the blue light filtering particle material is coated on the upper or lower surface of the diffusion film 31, as shown in Figure 4 Particles 311 for filtering blue light.
  • the diffusion film 31 includes blue light filter particles 311, diffusion particles 312 and a substrate 313, wherein the substrate 313 is a PET substrate with a light transmittance of 92%, and can be coated with a scratch-resistant coating It is hardened and shaped by , silica gel, etc. It has a certain crystal orientation ability, and also has good friction resistance, weather resistance and optical properties.
  • the thickness of the base material 313 is 120um ⁇ 125um.
  • the diffusion particles 312 are made of acrylic resin, and its composition may be PMMA, PBMA, or nylon.
  • the diffusion particles 312 are coated on the upper surface and the lower surface of the substrate 313, wherein the diffusion particles 312 are coated on the upper surface of the substrate 313 so that the diffusion particles 312 are exposed on the upper surface, so that Refract and reflect the light source to atomize and scatter the light source to uniformly emit light; the lower surface of the substrate 313 is coated with the diffusion particles 312, thereby increasing the wear resistance of the lower surface of the substrate 313 and avoiding scratches on the board .
  • the blue light filter particles 311 are coated on the upper or lower surface of the substrate 313, for example, the blue light filter particles 311 are mixed with the diffusion particles 312 in the lower surface of the PET substrate, and The PET substrate coated with the above raw materials is pasted and dried in an oven, and then the entire coated PET substrate is cured by UV radiation, so that the film mixed with the blue light filter particles 311 is hardened and formed, and the obtained At least one side of the PET substrate has the diffusion film 31 with the effect of filtering blue light.
  • the brightness enhancement film 32 includes blue light filter particles 321, back-coated particles 322, a substrate 323 and a prism structure 324, wherein the prism structure 324 is arranged on the upper surface of the substrate 323, and the
  • the base material 323 is a PET base material or a PC base material, which can be hardened and shaped by applying scratch-resistant coating, silica gel, etc. It has a certain crystal orientation ability, and also has good friction resistance, weather resistance and optical properties.
  • the thickness of the base material 323 is 120um ⁇ 125um.
  • the back-coated particles 322 are made of acrylic resin, and its composition can be PMMA, PBMA, or nylon.
  • the back-coated particles 322 are coated on the lower surface of the substrate 323, wherein the lower surface of the substrate 323 is coated with the back-coated particles 322, thereby increasing the wear resistance of the lower surface of the substrate 323 , to avoid scratching the plate.
  • the blue light filter particles 321 are coated on the lower surface of the substrate 323, for example, the blue light filter particles 321 are mixed with the back-coated particles 322 in the lower surface of the PET substrate, and the blue light filter particles 321 are mixed by putting Rolling, stress release, prism structure coating, UV curing, winding and other processes can obtain the brightness enhancing film 32 with the effect of filtering blue light on the lower surface of the PET substrate.
  • the composite film 33 is a diaphragm formed by a diffuser and a prism, i.e. a DOP composite film.
  • a DOP composite film As shown in Figures 1 and 6, taking the blue light filtering particle material mixed in the DOP composite film as an example, since the upper surface and the lower surface of the DOP composite film do not have a prism structure, that is, in this embodiment, in The upper surface or the lower surface of the DOP composite film can be coated with blue light filtering particle material.
  • the DOP composite film includes blue light filter particles 331, back-coated particles 332, substrate 333, and prism structure 334, wherein, there are two substrates 333, and the prism structure 334 is arranged on two between the base materials 333, the base material 333 is a PET base material or a PC base material, which can be hardened and shaped by applying a scratch-resistant coating, silica gel, etc., has a certain crystal orientation ability, and has good friction resistance , weather resistance and optical properties.
  • the thickness of the base material 333 is 120um ⁇ 125um.
  • the back-coated particles 332 are made of acrylic resin, and its composition can be PMMA, PBMA, or nylon.
  • the functions of the back-coated particles 332 are consistent with those of the above-mentioned back-coated particles 322 , and are not limited here.
  • the function of filtering high-energy peak short-wave blue light can be exerted to achieve the effect of eye protection.
  • the back-coated particles 332 in the lower surface of the PET substrate are mixed with the blue light filter particles 331, and the The PET substrate coated with the above raw materials is pasted and dried in an oven, and then the entire coated PET substrate is cured by UV irradiation, so that the film mixed with the blue light filter particles 331 is hardened and formed, and the At least one side of the PET substrate has the DOP composite film with the effect of filtering blue light.
  • the composite film 33 is a diaphragm formed by microlenses and prisms, that is, a MOP composite film.
  • a MOP composite film As shown in Figures 1 and 7, taking the blue light filter particle material mixed in the MOP composite film as an example, since the upper surface of the MOP composite film has a microprism structure, it is not easy to coat, that is, in this embodiment, in The lower surface of the MOP composite film is coated with blue light filtering particle material.
  • the MOP composite film includes blue light filter particles 335, back-coated particles 336, a substrate 337, a prism structure 338, and a microprism structure 339, wherein there are two substrates 337, and the prism structure 338 Located between the two substrates 337, the microprism structure 339 is arranged on the upper surface of the MOP composite film, the substrate 337 is a PET substrate or a PC substrate, and can be coated with a scratch-resistant coating It is hardened and shaped by , silica gel, etc. It has a certain crystal orientation ability, and also has good friction resistance, weather resistance and optical properties.
  • the thickness of the base material 337 is 120um ⁇ 125um.
  • the back-coated particles 332 are made of acrylic resin, and its composition can be PMMA, PBMA, nylon.
  • the back-coated particles 332 are coated on the lower surface of the MOP composite film, and their functions are consistent with those of the above-mentioned back-coated particles 322 , which are not limited herein.
  • the effect of filtering high-energy peak short-wave blue light can be exerted to achieve the effect of eye protection.
  • the back-coated particles 336 in the lower surface of the PET substrate are mixed with the blue light filter particles 335, and the The PET substrate coated with the above raw materials is pasted and dried in an oven, and then the entire coated PET substrate is cured by UV radiation, so that the film mixed with the blue light filter particles 331 is hardened and formed, and passed through a micro A prism molding process to obtain the MOP composite film with at least one side of the PET substrate having the effect of filtering blue light.
  • the composite film 33 is a diaphragm formed by a diffusion sheet, a core layer and two prisms, that is, a COPP composite film.
  • the methods of the blue light particles are the same, so we won't go into details one by one here.
  • the optical film set 3 does not have a reflective film, that is, the optical film set 3 includes a reinforcement film 32 and a composite film that are sequentially stacked on the back plate 1 33; at this time, the backlight module further includes a diffusion plate (not shown in the figure), and the diffusion plate is arranged between the enhancement film 32 and the back plate 1, wherein the diffusion plate or the reinforcement The blue light filtering particle material is mixed in the film 32 or the composite film 33 .
  • the diffusion plate includes blue light filter particles 60, diffusion particles 61 and a substrate 62, wherein the substrate 62 is a PET substrate with a light transmittance of 92%, and can be coated with a scratch-resistant coating, It is hardened and shaped by silica gel, etc. It has a certain crystal orientation ability, and also has good friction resistance, weather resistance and optical properties.
  • the thickness of the base material 62 is 120um ⁇ 125um.
  • the diffusion particles 61 are made of acrylic resin material, and its composition can be PMMA, PBMA, nylon.
  • the diffusion particles 61 are coated on the upper surface and the lower surface of the substrate 313, wherein the diffusion particles 61 are coated on the upper surface of the substrate 62, so that the diffusion particles 61 are exposed on the upper surface, so that Refract and reflect the light source to atomize and scatter the light source to uniformly emit light; the lower surface of the substrate 62 is coated with the diffusion particles 61, thereby increasing the wear resistance of the lower surface of the substrate 62 and avoiding scratches on the board .
  • the blue light filter particles 61 are coated on the upper or lower surface of the substrate 62, for example, the blue light filter particles 60 are mixed with the diffusion particles 61 in the lower surface of the PET substrate, and The PET substrate coated with the above raw materials is pasted and dried in an oven, and then the entire coated PET substrate is cured by UV irradiation, so that the film mixed with the blue light filter particles 60 is hardened and formed, and the obtained At least one side of the PET substrate has the diffusion plate with the effect of filtering blue light.
  • the method is the same as that described in the above embodiment, and will not be repeated here.
  • the blue light filtering particle material is a blue light blocking dye or pigment, for example, the blue light filtering particle material at least includes azo, methine, ketimide, azo metal complex, naphthoyl One or more of amines, nitrodiphenylamines, aminoketones, nitros, and o-anilines are not limited here.
  • the blue light filter particle material can also be monoazo, disazo, azo-methine, ketimide-methine, anthraquinone, quinoline, azine Classes, xanthenes, thioxanthenes, benzothiazoles, benzimidazoles, benzanthrone, benzimidazoles, dihydroacenaphthenes, spirooxazine-spiropyrans, lactones, Coumarins, lead chromate, cadmium yellow, oxygen yellow, bismuth vanadate, aromatic amides, benzidine, organic metal complexes, azo calcium salts and other azo salts, isoindolinone, quinacridine Any one or mixture of phthaloketone, anthrapyrimidine, flavanone, isoindoline, azo condensation, disazo condensation, diaryl o-phenone, anthraquinone, benzimidazolone , is
  • the rejection rate of the particle material for filtering blue light in this embodiment can be selected to be in the range of 20% to 24%.
  • the effect of filtering blue light is the best.
  • the blue light blocking of the blue light filtering particle material is the ratio of the blue light absorption peak to the total peak within the wavelength range of 440nm-460nm. In the range of 380-780nm, the transmittance of the blue light filtering particle material may be above 80%, and the haze may be above 85%.
  • the proportion of blue light can be reduced by matching blue light filter particles, which can effectively reduce the hazards of high-energy short-wave blue light, and change the peak and half-wave width of short-wave blue light, reducing the blue light peak by about 30%, and increasing the half-wave width by 2nm , so that the spectrum of the display screen is close to the continuous spectrum of natural light, which can effectively filter out blue light peaks and the screen display effect will not be yellow or dark, and can maintain the original color temperature of the display, providing the best viewing while protecting the health of users Effect, safeguard the health of human eyes, can realize the backlight solution of anti-blue light eye protection function.
  • the solution is applied to fields such as TV, display screens of electronic equipment, and display products, and is not limited here.
  • the scheme of coating blue light filter particles is applicable to various models, and the selection of blue light filter particles is diverse.
  • the scheme of this patent is evaluated by brightness, proportion of short-wave blue light, peak value, and half-wave width to be superior to ordinary backlight solutions, thereby filtering out peak short-wave blue light to achieve eye protection effect.
  • the peak value is denoted by U, which defines that the peak value of blue light measured by the film backlight module when not coated with blue light filter particles is 1.
  • the half-wave width is represented by ⁇ , which is defined as the interval between two wavelengths corresponding to 1/2 of the radiation power of the peak emission wavelength.
  • the color gamut is represented by the domestic TV backlight standard DCIP3. This patent compares the ordinary backlight solution (without blue light filter particles) and the solution with coated blue light filter particles. The specific test results are shown in the following table:
  • the blue light filter particle coating membrane solution can reduce the peak short-wave blue light by about 30%, and the T value of the peak short-wave blue light ratio is significantly reduced. , effectively reduce the intensity of blue light in the range of 400-450nm, and the brightness reduction value is less than 1%, the half-wave width is increased by 2nm, the half-wave width is increased, the color gamut is basically unchanged, and the damage of peak short-wave blue light to human eyes is reduced. While filtering out harmful blue light, it ensures that the picture quality is not cast in color and dark, and improves the visual effect.
  • the present invention also provides a display screen.
  • the display screen includes the backlight module as described in the above embodiments.
  • the backlight module includes: a backplane and a backlight light source arranged in the backplane, the backlight light source has a light-emitting element and a package covering the periphery of the light-emitting element; an optical film group, the optical film The sheet group is stacked on the back plate and covered on the light-emitting surface of the light-emitting element; wherein, the surface of the package is attached with a blue light filter film containing a blue light filter particle material, or the optical film The film group is mixed with blue light filtering particle material.
  • the blue light filter particle material at least includes azo, methine, ketimide, azo metal complex, naphthalimide, nitrodiphenylamine, aminoketone One or more of , nitro, o-aniline.
  • the rejection rate of the blue light filtering particle material is 20%-24%.
  • the optical film set includes: a diffusion film, a reinforcement film, and a composite film that are sequentially stacked on the back plate, wherein the diffusion film or the reinforcement film or the composite film The blue light filtering particle material is mixed in the film.
  • the optical film set includes a reinforcement film and a composite film that are sequentially stacked on the backplane; the backlight module further includes a diffusion plate, and the diffusion plate is arranged on the reinforcement Between the film and the back plate, wherein the diffusion plate or the enhancement film or the composite film is mixed with the blue light filtering particle material.
  • the thickness of the blue light filter film is 0.1um-50um.
  • the backlight light source further includes: a connecting seat, the connecting seat has an accommodating cavity, the light-emitting element is placed in the accommodating cavity and electrically connected to the connecting seat, and the The package is filled in the cavity.
  • the display screen of this embodiment includes the backlight module of the above embodiment, that is, the display screen of this embodiment includes all the technical features and technical effects achieved by the above embodiment, specifically refer to the description of the above embodiment, I will not go into details here.

Abstract

本发明提供了一种背光模组，背光模组包括背板以及设于背板内的背光光源，背光光源具有发光件以及包覆于发光件周缘的封装件；光学膜片组，光学膜片组层叠设置于背板上，并罩设在发光件的出光面；其中，封装件的表面贴设有包含滤蓝光粒子材料的滤蓝光膜，或者，光学膜片组内混合有滤蓝光粒子材料。

Description

背光模组及显示屏
本申请要求于2021年10月27日提交中国专利局、申请号为202111254310.2、申请名称为“背光模组及显示屏”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示技术领域，特别涉及一种背光模组及显示屏。
背景技术
目前TV背光中使用的是LED光源，其发光原理是芯片发出高能量短波蓝光来激发荧光粉发光。
技术问题
其中的蓝光波长短，尖峰高，能量高，不被角膜、晶状体吸收而穿透角膜和晶状体直射入黄斑部和视网膜，造成黄斑部感光细胞损伤和视网膜色素的上皮细胞的衰亡，引起黄斑病、白内障、青光眼，对人眼造成伤害，且尖峰短波蓝光照射会使细胞产生氧化应激反应和细胞毒素，降低纤维细胞的抗氧化能力，导致失眠，视觉疲劳。因此，如何解决尖峰短波蓝光伤眼的问题成为健康显示的关键。
技术解决方案
本发明的主要目的是提供一种背光模组及显示屏。
为实现上述目的，本发明提出了一种背光模组，所述背光模组包括：
背板以及设于所述背板内的背光光源，所述背光光源具有发光件以及包覆于所述发光件周缘的封装件；
光学膜片组，所述光学膜片组层叠设置于所述背板上，并罩设在所述发光件的出光面；
其中，所述封装件的表面贴设有包含滤蓝光粒子材料的滤蓝光膜，或者，所述光学膜片组内混合有滤蓝光粒子材料。
在一可选实施例中，所述滤蓝光粒子材料至少包括偶氮类、甲川类、酮亚酰胺类、偶氮金属络合类、萘酰亚胺类、硝基二苯胺类、氨基酮类、硝基类、邻苯胺中的一种或多种。
在一可选实施例中，所述滤蓝光粒子材料的阻隔率为20％～24％。
在一可选实施例中，所述光学膜片组包括：
依次层叠设置于所述背板上的扩散膜、增强膜以及复合膜，其中，所述扩散膜或所述增强膜或所述复合膜内混合有所述滤蓝光粒子材料。
在一可选实施例中，所述扩散膜包括滤蓝光粒子材料、扩散粒子以及基材，所述扩散粒子涂覆于所述基材的上表面，所述扩散粒子混合所述滤蓝光粒子材料涂覆于所述基材的下表面。
在一可选实施例中，所述光学膜片组包括依次层叠设置于所述背板上的增强膜以及复合膜；
所述背光模组还包括扩散板，所述扩散板设于所述增强膜与所述背板之间，其中，所述扩散板或所述增强膜或所述复合膜内混合有所述滤蓝光粒子材料。
在一可选实施例中，所述复合膜为由扩散片与棱镜形成的膜片，或者，所述复合膜为由微透镜与棱镜形成的膜片，或者，所述复合膜为由扩散片、核心层与两个棱镜形成的膜片。
在一可选实施例中，所述滤蓝光膜的厚度为0.1um～50um。
在一可选实施例中，所述背光光源还包括：
连接座，所述连接座内具有容纳腔，所述发光件放置于所述容纳腔内并与所述连接座电性连接，且所述封装件填充于所述容纳腔内。
在一可选实施例中，所述背光光源还包括连接线，所述连接线的一端与所述发光件连接，所述连接线的另一端与所述连接座连接。
在一可选实施例中，所述发光件为蓝光芯片，所述蓝光芯片的发射波长为457.5nm～460nm。
在一可选实施例中，所述滤蓝光膜包括第一保护涂层、第二保护涂层以及设于所述第一保护涂层与所述第二保护涂层之间的滤蓝光层，所述滤蓝光层内混合有所述滤蓝光粒子材料。
在一可选实施例中，所述第一保护涂层与所述第二保护涂层为AR涂层。
为了实现上述目的，本发明实施例还提供了一种显示屏，所述显示屏包括如上所述的背光模组。
有益效果
本发明提供了一种背光模组及显示屏，所述背光模组包括背板以及设于所述背板内的背光光源，所述背光光源具有发光件以及包覆于所述发光 件周缘的封装件；光学膜片组，所述光学膜片组层叠设置于所述背板上，并罩设在所述发光件的出光面；其中，所述封装件的表面贴设有包含滤蓝光粒子材料的滤蓝光膜，或者，所述光学膜片组内混合有滤蓝光粒子材料。即本发明提供的技术方案中，通过在所述发光件的封装件处设置所述滤蓝光膜，或者，在所述光学膜片组内混合有滤蓝光粒子材料，从而通过滤蓝光粒子材料滤除掉所述发光件发射光线中的尖峰短波蓝光以达到护眼目的，进而提高了半波宽，且保持亮度和色域基本不变，视效好。
附图说明
为了更清楚地说明本发明实施例或示例性中的技术方案，下面将对实施例或示例性描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的获得其他的附图。
图1为本发明实施例背光模组的结构示意图；
图2为本发明实施例背光光源的结构示意；
图3为本发明实施例滤蓝光膜的结构示意图；
图4为本发明实施例反射膜的结构示意图；
图5为本发明实施例增强膜的结构示意图；
图6为本发明实施例复合膜(DOP)的结构示意图；
图7为本发明实施例复合膜(MOP)的结构示意图；
图8为本发明实施例扩散板的结构示意图。
附图说明：
1 背板 231 第一保护涂层
2 背光光源 232 第二保护涂层
3 光学膜片组 31 反射膜
21 发光件 32 增强膜
22 封装件 33 复合膜
23 滤蓝光膜 311、321、331、335、60 滤蓝光粒子
24 连接座 312、61 扩散粒子
25 容纳腔 313、333、337、62 基材
26 连接线 324、334、338 棱镜结构
339 微棱镜结构 322、332、336 背涂粒子
233 滤蓝光层    
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
本发明的实施方式
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，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作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。
需要说明，本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提供了一种背光模组。
在一实施例中，如图1和2所示，所述背光模组包括背板1以及设于所述背板1内的背光光源2，所述背光光源2具有发光件21以及包覆于所述发光件21周缘的封装件22；光学膜片组3，所述光学膜片组3层叠设置于所述背板1上，并罩设在所述发光件21的出光面；其中，所述封装件22的表面贴设有包含滤蓝光粒子材料的滤蓝光膜23，或者，所述光学膜片组3内混合有滤蓝光粒子材料。即本发明提供的技术方案中，通过在所述 发光件21的封装件22处设置所述滤蓝光膜23，或者，在所述光学膜片组3内混合有滤蓝光粒子材料，从而通过滤蓝光粒子材料滤除掉所述发光件21发射光线中的尖峰短波蓝光以达到护眼目的，进而提高了半波宽，且保持亮度和色域基本不变，视效好。
进一步地，所述发光件21为蓝光芯片，所述蓝光芯片的发射波长为457.5nm～460nm。即在所述发光件21的封装件22处设置所述滤蓝光膜23，所述滤蓝光膜23可直接从所述发光件21处，过滤掉尖峰短波蓝光的危害，维护人眼健康。
可选地，所述封装件22为封装胶。该封装胶起到隔绝空气的作用，本实施例中的封装胶可选为硅胶，具有耐热性、耐UV紫外光、耐水蒸气性、耐冷热冲击性、低热膨胀系数等优势。当然，上述封装胶还可包括但不限于环氧类、有机硅类、聚氨酯类及紫外线光固化封装胶等，在此并不进行限定。
进一步地，所述封装件22内不混合荧光粉，此时，所述发光件21即为纯蓝光芯片LED；或者，所述封装件22中也可以混合YAG/KSF荧光粉，此时，所述发光件21即为激发YAG/KSF荧光粉的蓝光芯片LED，在此并不进行限定。
进一步地，如图2所示，所述背光光源2还包括连接座24，所述连接座24内具有容纳腔25，所述发光件21放置于所述容纳腔25内并与所述连接座24电性连接，且所述封装件22填充于所述容纳腔25内。
可选地，所述连接座24起到支撑、导电、散热以及保护芯片的作用，所述连接座24可采用PCT材料制备，或者，所述连接座24还可采用PA、EMC、PPA、SMC等材料制备，在此并不进行限制。
进一步地，为了实现所述发光件21与所述连接座24之间的连接，所述背光光源包括连接线26，所述连接线26的一端与所述发光件21连接，所述连接线26的另一端与所述连接座24连接。
可选地，所述连接线26为金线，上述金线具有导电性好、延展性高、焊接性好的特点。当然，在其他实施例中，所述连接线26还可以为其他类型的连接线，在此并不进行限定。
进一步地，所述滤蓝光膜23的厚度为0.1um～50um。其中，所述滤蓝 光膜23为所述封装件22表面喷涂或涂覆滤蓝光粒子材料的膜。
具体地，如图3所示，所述滤蓝光粒子膜23包括第一保护涂层231、第二保护涂层232以及设于所述第一保护涂层231与所述第二保护涂层232之间的滤蓝光层233，所述滤蓝光层233内混合有滤蓝光粒子材料。其中，所述第一保护涂层231与所述第二保护涂层232均为AR涂层，上述AR涂层能够减少反射光的强度、增加透射率，从而减少亮度损失；而所述滤蓝光层233可以削弱蓝光，降低其透射率，从而减少尖峰短波蓝光对人眼的危害，而所述封装件22与所述滤蓝光膜233之间的空隙处填充满封装胶。
可选地，所述滤蓝光膜233可通过UV固化、烘烤、干燥等工艺形成，而UV固化、烘烤、干燥等工艺为示例性中的工艺，本实施例中，并未对其进行改进。
进一步地，如图1所示，所述光学膜片组3包括依次层叠设置于所述背板上的扩散膜31、增强膜32以及复合膜33，其中，所述扩散膜31内混合有所述滤蓝光粒子材料，或者，所述增强膜32内混合有所述滤蓝光粒子材料，或者，所述复合膜33内混合有所述滤蓝光粒子材料。
具体地，上述滤蓝光粒子材料可涂覆在所述扩散膜31或所述增强膜32或所述复合膜33的表面，比如，将上述滤蓝光粒子材料涂布在基材的表面并在烘烤箱干燥，其中，该烘烤箱的工作温度为60℃～130℃，然后，进行UV紫外光照射固化，使得混有滤蓝光粒子材料的基材硬化成型，从而获得至少一面混合有滤蓝光功效的所述扩散膜31或所述增强膜32或所述复合膜33。
结合图1和4所示，以所述扩散膜31内混合有所述滤蓝光粒子材料为例，在所述扩散膜31的上表面或下表面涂覆滤蓝光粒子材料，即图4示出的滤蓝光粒子311。本实施例中，所述扩散膜31包括滤蓝光粒子311、扩散粒子312以及基材313，其中，所述基材313为PET基材，透光率为92％，可采用涂抹抗刮涂层、硅胶等方式硬化定型而成，具有一定的结晶取向能力，另外具有良好的耐摩擦、耐候性及光学性能。所述基材313的厚度为120um～125um。
可选地，所述扩散粒子312采用丙烯酸树脂类材料，其成分可为PMMA、PBMA、尼龙。所述扩散粒子312涂覆于所述基材313的上表面 和下表面，其中，在所述基材313上表面涂覆所述扩散粒子312，使得该扩散粒子312外露于该上表面，以对光源进行折射和反射，使光源雾化散射，均匀出光；所述基材313的下表面涂覆所述扩散粒子312，从而增加所述基材313下表面的耐磨性，避免刮伤板材。
而本实施例中，通过将所述滤蓝光粒子311与所述扩散粒子312混合，从而能够发挥滤除高能尖峰短波蓝光的作用，达到护眼的效果。具体地，将所述滤蓝光粒子311涂布在所述基材313的上表面或下表面，比如，在PET基材的下表面内的所述扩散粒子312混合所述滤蓝光粒子311，并将涂布以上原料的PET基材进行贴合并在烘烤箱干燥，然后将涂布完成的PET基材整体进行UV照射固化，使得混有所述滤蓝光粒子311的膜片硬化成型，可获得该PET基材的至少一面具有滤蓝光功效的所述扩散膜31。
结合图1和5所示，以所述增亮膜32内混合有所述滤蓝光粒子材料为例，由于所述增亮膜32上表面具有棱镜结构，不易涂覆，即本实施例中，在所述增亮膜32的下表面涂覆滤蓝光粒子材料。本实施例中，所述增亮膜32包括滤蓝光粒子321、背涂粒子322、基材323以及棱镜结构324，其中，所述棱镜结构324设于所述基材323的上表面，所述基材323为PET基材或PC基材，可采用涂抹抗刮涂层、硅胶等方式硬化定型而成，具有一定的结晶取向能力，另外具有良好的耐摩擦、耐候性及光学性能。所述基材323的厚度为120um～125um。
可选地，所述背涂粒子322采用丙烯酸树脂类材料，其成分可为PMMA、PBMA、尼龙。所述背涂粒子322涂覆于所述基材323的下表面，其中，所述基材323的下表面涂覆所述背涂粒子322，从而增加所述基材323下表面的耐磨性，避免刮伤板材。
而本实施例中，通过将所述滤蓝光粒子321与所述背涂粒子322混合，从而能够发挥滤除高能尖峰短波蓝光的作用，达到护眼的效果。具体地，将所述滤蓝光粒子321涂布在所述基材323的下表面，比如，在PET基材的下表面内的所述背涂粒子322混合所述滤蓝光粒子321，并通过放卷、释放应力、棱镜结构涂布、UV固化、收卷等工艺，可获得该PET基材的下表面具有滤蓝光功效的所述增亮膜32。
进一步地，所述复合膜33为由扩散片与棱镜形成的膜片，即DOP复 合膜。结合图1和6所示，以所述DOP复合膜内混合有所述滤蓝光粒子材料为例，由于所述DOP复合膜上表面和下表面均不具有棱镜结构，即本实施例中，在所述DOP复合膜的上表面或下表面均可涂覆滤蓝光粒子材料。本实施例中，所述DOP复合膜包括滤蓝光粒子331、背涂粒子332、基材333以及棱镜结构334，其中，所述基材333为两个，所述棱镜结构334设于两个所述基材333之间，所述基材333为PET基材或PC基材，可采用涂抹抗刮涂层、硅胶等方式硬化定型而成，具有一定的结晶取向能力，另外具有良好的耐摩擦、耐候性及光学性能。所述基材333的厚度为120um～125um。
可选地，所述背涂粒子332采用丙烯酸树脂类材料，其成分可为PMMA、PBMA、尼龙。所述背涂粒子332的功能与上述背涂粒子322的功能一致，在此并不进行限定。
而本实施例中，通过将所述滤蓝光粒子331与所述背涂粒子332混合，从而能够发挥滤除高能尖峰短波蓝光的作用，达到护眼的效果。具体地，以将所述滤蓝光粒子331涂布在所述基材333的下表面为例，在PET基材的下表面内的所述背涂粒子332混合所述滤蓝光粒子331，并将涂布以上原料的PET基材进行贴合并在烘烤箱干燥，然后将涂布完成的PET基材整体进行UV照射固化，使得混有所述滤蓝光粒子331的膜片硬化成型，可获得该PET基材的至少一面具有滤蓝光功效的所述DOP复合膜。
进一步地，所述复合膜33为由微透镜与棱镜形成的膜片，即MOP复合膜。结合图1和7所示，以所述MOP复合膜内混合有所述滤蓝光粒子材料为例，由于所述MOP复合膜上表面为微棱镜结构，不易涂覆，即本实施例中，在所述MOP复合膜的下表面涂覆滤蓝光粒子材料。本实施例中，所述MOP复合膜包括滤蓝光粒子335、背涂粒子336、基材337、棱镜结构338以及微棱镜结构339，其中，所述基材337为两个，所述棱镜结构338设于两个所述基材337之间，所述微棱镜结构339设于所述MOP复合膜的上表面，所述基材337为PET基材或PC基材，可采用涂抹抗刮涂层、硅胶等方式硬化定型而成，具有一定的结晶取向能力，另外具有良好的耐摩擦、耐候性及光学性能。所述基材337的厚度为120um～125um。
可选地，所述背涂粒子332采用丙烯酸树脂类材料，其成分可为 PMMA、PBMA、尼龙。所述背涂粒子332涂覆于所述MOP复合膜的下表面，且功能与上述背涂粒子322的功能一致，在此并不进行限定。
而本实施例中，通过将所述滤蓝光粒子335与所述背涂粒子336混合，从而能够发挥滤除高能尖峰短波蓝光的作用，达到护眼的效果。具体地，以将所述滤蓝光粒子335涂布在所述基材337的下表面为例，在PET基材的下表面内的所述背涂粒子336混合所述滤蓝光粒子335，并将涂布以上原料的PET基材进行贴合并在烘烤箱干燥，然后将涂布完成的PET基材整体进行UV照射固化，使得混有所述滤蓝光粒子331的膜片硬化成型，并通过微棱镜成型工艺，以获得该PET基材的至少一面具有滤蓝光功效的所述MOP复合膜。
进一步地，所述复合膜33为由扩散片、核心层与两个棱镜形成的膜片，即COPP复合膜，该COPP复合膜上涂覆滤蓝光粒子的方式与所述MOP复合膜涂覆滤蓝光粒子的方式相同，在此并不一一赘述。
进一步地，由于部分背光模组中，所述光学膜片组3内并不具有反射膜，即所述光学膜片组3包括依次层叠设置于所述背板1上的增强膜32以及复合膜33；此时，所述背光模组还包括扩散板(图未示)，所述扩散板设于所述增强膜32与所述背板1之间，其中，所述扩散板或所述增强膜32或所述复合膜33内混合有所述滤蓝光粒子材料。
本实施例中，结合图1和8所示，以所述扩散板内混合有所述滤蓝光粒子材料为例，由于所述扩散板的上下表面均无棱镜结构，即在所述扩散膜31的上表面或下表面涂覆滤蓝光粒子材料。本实施例中，所述扩散板包括滤蓝光粒子60、扩散粒子61以及基材62，其中，所述基材62为PET基材，透光率为92％，可采用涂抹抗刮涂层、硅胶等方式硬化定型而成，具有一定的结晶取向能力，另外具有良好的耐摩擦、耐候性及光学性能。所述基材62的厚度为120um～125um。
可选地，所述扩散粒子61采用丙烯酸树脂类材料，其成分可为PMMA、PBMA、尼龙。所述扩散粒子61涂覆于所述基材313的上表面和下表面，其中，在所述基材62上表面涂覆所述扩散粒子61，使得该扩散粒子61外露于该上表面，以对光源进行折射和反射，使光源雾化散射，均匀出光；所述基材62的下表面涂覆所述扩散粒子61，从而增加所述基材62下表面 的耐磨性，避免刮伤板材。
而本实施例中，通过将所述滤蓝光粒子60与所述扩散粒子61混合，从而能够发挥滤除高能尖峰短波蓝光的作用，达到护眼的效果。具体地，将所述滤蓝光粒子61涂布在所述基材62的上表面或下表面，比如，在PET基材的下表面内的所述扩散粒子61混合所述滤蓝光粒子60，并将涂布以上原料的PET基材进行贴合并在烘烤箱干燥，然后将涂布完成的PET基材整体进行UV照射固化，使得混有所述滤蓝光粒子60的膜片硬化成型，可获得该PET基材的至少一面具有滤蓝光功效的所述扩散板。
基于所述增强膜32或所述复合膜33内混合有所述滤蓝光粒子材料，与上述实施例描述的方式相同，在此并不一一赘述。
基于上述实施例，所述滤蓝光粒子材料为阻隔蓝光染料或颜料，比如，所述滤蓝光粒子材料至少包括偶氮类、甲川类、酮亚酰胺类、偶氮金属络合类、萘酰亚胺类、硝基二苯胺类、氨基酮类、硝基类、邻苯胺中的一种或多种，在此并不进行限定。
当然，在其他实施例中，所述滤蓝光粒子材料还可以是单偶氮类、双偶氮类、偶氮-甲川类、酮亚酰胺-甲川类、蒽醌类、喹啉类、吖嗪类、咕吨类，硫咕吨类、苯并噻唑类、苯并咪唑类、苯并蒽酮类、苯并咪唑类、二氢苊类、螺恶嗪-螺吡喃类、内酯型、香豆素类、铬酸铅、镉黄、氧黄、钒酸铋、芳酰胺、联苯胺、有机金属络合物、偶氮钙盐及其它偶氮盐类、异吲哚啉酮、喹吖酞酮、蒽嘧啶、黄烷士酮、异吲哚啉、偶氮缩合、双偶氮缩合、二芳基邻酰苯、蒽醌、苯并咪唑酮中的任意一种或几种混合而成，在此并不进行限定。
进一步地，由于在所述滤蓝光粒子材料的蓝光阻隔率过低时，滤蓝光的效果不明显；在所述滤蓝光粒子材料的蓝光阻隔率过高时，存在过滤掉无害蓝光，导致颜色失真，因此本实施例中所述滤蓝光粒子材料的阻隔率可选为20％～24％范围内，此时，滤蓝光效果最好。其中，所述滤蓝光粒子材料的蓝光阻隔为在波段440nm～460nm范围内，蓝光吸收峰值占总峰值的比值。在380-780nm范围内，所述滤蓝光粒子材料的透过率可选为80％以上，雾度可选为85％以上。
即本实施例中，通过搭配滤蓝光粒子来降低蓝光占比，可以有效降低 高能短波蓝光危害，并改变了短波蓝光的尖峰和半波宽，将蓝光尖峰降低约30％，半波宽增加2nm，使得显示屏的光谱图接近于自然光连续光谱，能有效过滤掉蓝光尖峰且屏幕显示效果不会发黄发暗，可以维持显示器原有色温，在保障使用者健康的同时，提供最佳的观赏效果，捍卫人眼健康，可实现防蓝光护眼功能的背光方案。
可选地，该方案应用于TV、电子设备显示屏及显示产品等领域，在此并不限定。且涂覆滤蓝光粒子的方案适用于各种机型，滤蓝光粒子的选择具有多样性。
本实施例，通过亮度、短波蓝光占比、尖峰值、半波宽来评估本专利的方案优于普通背光方案，从而滤除尖峰短波蓝光达到护眼效果。用T定义短波蓝光占比，在400-500nm范围内，短波蓝光波段从415nm到455nm的蓝光亮度占总蓝光波段400nm到500nm亮度的比值，即T＝Σ(415-455nm)/Σ(400-500nm)。尖峰值用U表示，定义不涂覆滤蓝光粒子时的膜片背光模组测出的蓝光尖峰值为1。半波宽用Δλ表示，定义为峰值发射波长的辐射功率的1/2所对应两波长的间隔。用国内TV背光常用标准DCIP3表征色域。本专利以普通背光方案(无滤蓝光粒子)和有涂覆滤蓝光粒子的方案对比，具体测试结果如下表所示：
Figure PCTCN2022113718-appb-000001
普通背光方案(无滤蓝光粒子)和有涂覆滤蓝光粒子的方案对比，采用滤蓝光粒子涂覆膜片的方案，可以使得尖峰短波蓝光降低约30％，尖峰短波蓝光占比T值明显降低，有效减少400-450nm范围内的蓝光强度，并且亮度降低值小于1％，半波宽增加了2nm，提高了半波宽，色域基本不变，降 低了尖峰短波蓝光对人眼的伤害，滤除有害部分蓝光的同时保证了画质不偏色偏暗，提高视效。
基于上述实施例，本发明还提供了一种显示屏。
在本实施例中，所述显示屏包括如上述实施例所述的背光模组。
所述背光模组包括：背板以及设于所述背板内的背光光源，所述背光光源具有发光件以及包覆于所述发光件周缘的封装件；光学膜片组，所述光学膜片组层叠设置于所述背板上，并罩设在所述发光件的出光面；其中，所述封装件的表面贴设有包含滤蓝光粒子材料的滤蓝光膜，或者，所述光学膜片组内混合有滤蓝光粒子材料。
在一可选实施例中，所述滤蓝光粒子材料至少包括偶氮类、甲川类、酮亚酰胺类、偶氮金属络合类、萘酰亚胺类、硝基二苯胺类、氨基酮类、硝基类、邻苯胺中的一种或多种。
在一可选实施例中，所述滤蓝光粒子材料的阻隔率为20％～24％。
在一可选实施例中，所述光学膜片组包括：依次层叠设置于所述背板上的扩散膜、增强膜以及复合膜，其中，所述扩散膜或所述增强膜或所述复合膜内混合有所述滤蓝光粒子材料。
在一可选实施例中，所述光学膜片组包括依次层叠设置于所述背板上的增强膜以及复合膜；所述背光模组还包括扩散板，所述扩散板设于所述增强膜与所述背板之间，其中，所述扩散板或所述增强膜或所述复合膜内混合有所述滤蓝光粒子材料。
在一可选实施例中，所述滤蓝光膜的厚度为0.1um～50um。
在一可选实施例中，所述背光光源还包括：连接座，所述连接座内具有容纳腔，所述发光件放置于所述容纳腔内并与所述连接座电性连接，且所述封装件填充于所述容纳腔内。
由于本实施例的所述显示屏包括上述实施例的背光模组，即本实施例的所述显示屏包括上述实施例的所有技术特征以及所达到的技术效果，具体参照上述实施例的描述，在此并不一一赘述。
以上所述仅为本发明的可选实施例，并非因此限制本发明的专利范围，凡是在本发明的构思下，利用本发明说明书及附图内容所作的等效变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围 内。

Claims (20)

  1. 一种背光模组，其中，所述背光模组包括：
    背板以及设于所述背板内的背光光源，所述背光光源具有发光件以及包覆于所述发光件周缘的封装件；
    光学膜片组，所述光学膜片组层叠设置于所述背板上，并罩设在所述发光件的出光面；
    其中，所述封装件的表面贴设有包含滤蓝光粒子材料的滤蓝光膜，或者，所述光学膜片组内混合有滤蓝光粒子材料。
  2. 根据权利要求1所述的背光模组，其中，所述滤蓝光粒子材料至少包括偶氮类、甲川类、酮亚酰胺类、偶氮金属络合类、萘酰亚胺类、硝基二苯胺类、氨基酮类、硝基类、邻苯胺中的一种或多种。
  3. 根据权利要求2所述的背光模组，其中，所述滤蓝光粒子材料的阻隔率为20％～24％。
  4. 根据权利要求1所述的背光模组，其中，所述光学膜片组包括：
    依次层叠设置于所述背板上的扩散膜、增强膜以及复合膜，其中，所述扩散膜或所述增强膜或所述复合膜内混合有所述滤蓝光粒子材料。
  5. 根据权利要求4所述的背光模组，其中，所述扩散膜包括滤蓝光粒子材料、扩散粒子以及基材，所述扩散粒子涂覆于所述基材的上表面，所述扩散粒子混合所述滤蓝光粒子材料涂覆于所述基材的下表面。
  6. 根据权利要求1所述的背光模组，其中，所述光学膜片组包括依次层叠设置于所述背板上的增强膜以及复合膜；
    所述背光模组还包括扩散板，所述扩散板设于所述增强膜与所述背板之间，其中，所述扩散板或所述增强膜或所述复合膜内混合有所述滤蓝光粒子材料。
  7. 根据权利要求4或6所述的背光模组，其中，所述复合膜为由扩散片与棱镜形成的膜片，或者，所述复合膜为由微透镜与棱镜形成的膜片，或者，所述复合膜为由扩散片、核心层与两个棱镜形成的膜片。
  8. 根据权利要求1所述的背光模组，其中，所述滤蓝光膜的厚度为0.1um～50um。
  9. 根据权利要求1所述的背光模组，其中，所述背光光源还包括：
    连接座，所述连接座内具有容纳腔，所述发光件放置于所述容纳腔内并与所述连接座电性连接，且所述封装件填充于所述容纳腔内。
  10. 根据权利要求9所述的背光模组，其中，所述背光光源还包括连接线，所述连接线的一端与所述发光件连接，所述连接线的另一端与所述连接座连接。
  11. 根据权利要求1所述的背光模组，其中，所述发光件为蓝光芯片，所述蓝光芯片的发射波长为457.5nm～460nm。
  12. 根据权利要求1所述的背光模组，其中，所述滤蓝光膜包括第一保护涂层、第二保护涂层以及设于所述第一保护涂层与所述第二保护涂层之间的滤蓝光层，所述滤蓝光层内混合有所述滤蓝光粒子材料。
  13. 根据权利要求12所述的背光模组，其中，所述第一保护涂层与所述第二保护涂层为AR涂层。
  14. 一种显示屏，包括背光模组，其中，所述背光模组包括：
    背板以及设于所述背板内的背光光源，所述背光光源具有发光件以及包覆于所述发光件周缘的封装件；
    光学膜片组，所述光学膜片组层叠设置于所述背板上，并罩设在所述发光件的出光面；
    其中，所述封装件的表面贴设有包含滤蓝光粒子材料的滤蓝光膜，或者，所述光学膜片组内混合有滤蓝光粒子材料。
  15. 根据权利要求14所述的显示屏，其中，所述滤蓝光粒子材料至少包括偶氮类、甲川类、酮亚酰胺类、偶氮金属络合类、萘酰亚胺类、硝基二苯胺类、氨基酮类、硝基类、邻苯胺中的一种或多种。
  16. 根据权利要求15所述的显示屏，其中，所述滤蓝光粒子材料的阻隔率为20％～24％。
  17. 根据权利要求14所述的显示屏，其中，所述光学膜片组包括：
    依次层叠设置于所述背板上的扩散膜、增强膜以及复合膜，其中，所述扩散膜或所述增强膜或所述复合膜内混合有所述滤蓝光粒子材料。
  18. 根据权利要求14所述的显示屏，其中，所述光学膜片组包括依次层叠设置于所述背板上的增强膜以及复合膜；
    所述背光模组还包括扩散板，所述扩散板设于所述增强膜与所述背板之间，其中，所述扩散板或所述增强膜或所述复合膜内混合有所述滤蓝光粒子材料。
  19. 根据权利要求14所述的显示屏，其中，所述滤蓝光膜的厚度为0.1um～50um。
  20. 根据权利要求14所述的显示屏，其中，所述背光光源还包括：
    连接座，所述连接座内具有容纳腔，所述发光件放置于所述容纳腔内并与所述连接座电性连接，且所述封装件填充于所述容纳腔内。
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