CN216387434U - Optical functional film with function of selectively modulating intensity of blue light - Google Patents
Optical functional film with function of selectively modulating intensity of blue light Download PDFInfo
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- CN216387434U CN216387434U CN202021404879.3U CN202021404879U CN216387434U CN 216387434 U CN216387434 U CN 216387434U CN 202021404879 U CN202021404879 U CN 202021404879U CN 216387434 U CN216387434 U CN 216387434U
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Abstract
The utility model discloses an optical functional film with selective modulation of blue light intensity, wherein: the composite film is formed by compounding 2 or more than 2 materials through multilayer coating, and the materials are metal, oxide, nitride, fluoride or oxynitride containing titanium, tantalum, zirconium, niobium, aluminum, silicon, magnesium, iridium, yttrium, ytterbium, indium, tungsten, molybdenum, vanadium, nickel, silver, copper or gold; the composite film has selective absorption, reflection or transmission effects on 415nm-455nm blue light, and is used for reducing 415nm-455nm blue light transmission in a visible light wave band of 380nm-780nm, and basically not changing the transmission of other frequency spectrums or having antireflection and permeability increasing effects. The optical functional film can inhibit and adjust blue light of 415nm-455nm waveband harmful to human eyes, achieves the purpose of protecting eyes healthily by modulating the blue light to match with proper light intensity, and effectively reduces human eye discomfort caused by watching a display screen for a long time. While maintaining a realistic restoration of the display device color.
Description
Technical Field
The utility model belongs to the technical field of optical functional films, and particularly relates to an optical functional film and a display screen with the function of selectively modulating the intensity of blue light.
Background
In the display screen formed by the existing display technologies such as LED light emitting display, liquid crystal display, OLED organic light emitting display, etc., the typical radiation spectrum (as shown in fig. 1) of the light source of the backlight module or the self-luminous device is in the visible spectrum of 380nm-780nm, the luminous intensity of the blue light band (415 nm-455 nm) is relatively high, and the peak characteristics are obvious, and the research shows that: the strong 415nm-455nm blue light has great harm to human eyes, and the long-time viewing of the display screen formed by the light source brings discomfort to human eyes and damages to human health.
Publication No. 105524566B, publication No. 2018-10-16, discloses a PET-based protective film having a blue light-regulating function, high transparency, and scratch resistance. The protective film comprises a PET film layer and a blue light regulating pressure sensitive adhesive layer, wherein the blue light regulating pressure sensitive adhesive layer is formed by mixing hot-melt acrylic resin and a blue light regulator, and the blue light regulator is polyacrylic acid carotene ester; the protective film consists of five layers which are sequentially as follows: acrylate coating, nanometer anti-reflection coating, PET film layer, blue light regulation pressure sensitive adhesive layer and from the type rete. The utility model uses the blue light absorbent with the main absorption peak of 440nm in the air, realizes the selective absorption of blue light with different wavelengths, realizes the high absorption of high-energy blue light and the low absorption or non-absorption of low-energy blue light, solves the problem of obviously reduced color rendering caused by excessive absorption of blue light, and also thoroughly solves the world problem of threat of blue light to human eyes in LED products.
Publication No. 107817637a discloses japanese 2018-03-20 a blue light-preventing structure, a display device, and a blue light-preventing adjustment method. The blue light prevention structure comprises a first transparent medium layer, a second transparent medium layer and an electric induced refractive index adjusting layer. The second transparent medium layer is arranged on one side of the first transparent medium layer; the electric refractive index adjusting layer is arranged between the first transparent medium layer and the second transparent medium layer. The electro-refractive index adjustment layer is configured to change a refractive index change of blue light transmitted therethrough under an action of an electric field applied between a first side thereof adjacent to the first transparent medium layer and a second side thereof adjacent to the second transparent medium layer. This prevent blue light structure can prevent the blue light of different wavelength, allows the user to open selectively and close and prevents the blue light function and adjust the transmissivity of preventing the blue light according to individual's needs. The existing blue light prevention protective film has poor transparency, the visible light full-line transmittance of the protective film is less than or equal to 84 percent, and the blue light cannot be selectively absorbed.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned defects in the prior art, the present invention aims to provide an optical functional film with selective blue light intensity modulation, which can suppress and adjust the blue light in the 415nm-455nm band harmful to human eyes, and achieve the purpose of healthy eye protection by modulating the blue light to match with appropriate light intensity, thereby effectively reducing the human eye discomfort caused by watching a display screen for a long time. While maintaining a realistic restoration of the display device color.
In order to achieve the purpose, the utility model adopts the technical scheme that: the optical function film with the function of selectively modulating the intensity of blue light is characterized In that the optical function film is a composite film compounded by 2 or more than 2 materials through multilayer coating, and the materials are metal, oxide, nitride, fluoride or oxynitride containing titanium Ti, tantalum Ta, zirconium Zr, niobium Nb, aluminum Al, silicon Si, magnesium Mg, iridium Ir, yttrium Y, ytterbium Yi, indium In, tungsten W, molybdenum Mo, vanadium V, nickel Ni, silver Ag, copper Cu or gold Au; the composite film has selective absorption, reflection or transmission effects on 415nm-455nm blue light, and is used for reducing 415nm-455nm blue light transmission in a visible light wave band of 380nm-780nm, and basically not changing the transmission of other frequency spectrums or having antireflection and permeability increasing effects.
The structure of the composite film is as follows:
144nmMgF2/17nmTiO2/54nmMgF2/35nmTiO2/29nmMgF2/38nmTiO2/62nmMgF2/15nmTiO2/72nmMgF2/108nmTiO2/177nmMgF2/13nmTiO2/7.2nmMgF2/93nmTiO2/49.6nmMgF2/11.6nmTiO2/97.5nmMgF2 /G。
the structure of the antireflection film is as follows:
G/195.68nmMgF2/15.22nmTiO2/30.12nmMgF2/62.57nmTiO2/17.75nmMgF2/23.85nmTiO2/221.41nmMgF2/10.01nmTiO2/122.36 nmMgF2。
the composite film is coated on the surface of the substrate to form the display panel in a composite mode, and the display panel is attached to the display module to form the display screen.
The composite film is positioned on the outer surface of the display panel or positioned on the inner surface of the display panel.
The composite film is plated on one surface of the substrate or respectively plated on two surfaces of the substrate for compounding.
And an antireflection film in the wave band range of 380nm-780nm is plated on the outer surface of the display panel.
The composite film is coated on the surface of a light guide reflecting plate of the backlight module for display to form the reflecting plate in a composite mode, the composite film is used for modulating and reducing the blue light reflectivity of 415nm-455nm within the range of 380nm-780nm of a visible light wave band, and the rest frequency spectrums have high reflectivity.
Adopt above-mentioned technical scheme's beneficial effect: the light intensity spectrum distribution characteristic of a luminous light source adopted by the prior display technology in the range of 380nm-780nm is combined with a panel of a display screen or a light guide reflection plate of a backlight module to form an optical functional film which can carry out light intensity modulation on blue light with specific wavelength (415 nm-455 mm) and basically does not change the light intensity of other spectrums. The light transmittance of 415-455nm blue light is modulated to 79% in the visible light range of 380-780nm, the light transmittance of the rest frequency spectrum is more than 99.5%, the display module formed by the optical functional film with the structure can inhibit and adjust 415-455nm waveband blue light harmful to human eyes, the aim of healthy eye protection is achieved by modulating the blue light to match with proper light intensity, meanwhile, the vivid restoration of the color of the display device is kept, the discomfort of human eyes caused by watching the display screen for a long time is effectively reduced, and the display module can be widely applied to devices such as display screens/backlight modules of LED light-emitting display, liquid crystal display, OLED organic light-emitting and the like.
Drawings
The following describes in further detail specific embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 shows a light emission spectrum of an LED backlight module;
FIG. 2 is a schematic diagram of a composite film spectral curve;
FIG. 3 is a schematic structural diagram of a composite film on an inner surface of a display panel;
FIG. 4 is a schematic structural diagram of a composite film on an outer surface of a display panel;
FIG. 5 is a schematic structural diagram of a composite film on an inner surface of a display panel and an antireflection film on an outer surface of the display panel;
FIG. 6 is a schematic view of a spectral curve of an antireflection film;
FIG. 7 is a schematic structural view of a reflector plate;
FIG. 8 is a schematic graph of the spectrum of the composite film of FIG. 7;
FIG. 9 is a schematic graph of the spectrum of the composite film of example 1.
Detailed Description
As shown in the light-emitting spectrum of the LED backlight module in fig. 1, the 415nm-455nm blue light peak characteristic is obvious, the strong 415nm-455nm blue light has great harm to human eyes, and the long-time watching of a display screen formed by the light source brings discomfort to human eyes and damages to human health.
Example 1: with selective modulation of blue light intensityThe optical functional film and the display screen with the optical functional film for selectively modulating the intensity of blue light adopt titanium dioxide (TiO) on the surface of a substrate 012) With magnesium fluoride (MgF)2) Two materials with different refractive indexes form a composite film 02 which is formed by inhibiting and reducing the blue light transmittance of 415nm-455nm within the visible light wave band range of 380nm-780nm and obtaining the transmittance of the rest frequency spectrums through a Physical Vapor Deposition (PVD), and the structure of the composite film is as follows:
144nmMgF2/17nmTiO2/54nmMgF2/35nmTiO2/29nmMgF2/38nmTiO2/62nmMgF2/15nmTiO2/72nmMgF2/108nmTiO2/177nmMgF2/13nmTiO2/7.2nmMgF2/93nmTiO2/49.6nmMgF2/11.6nmTiO2/97.5nmMgF2the spectral characteristic curve of the optical functional film with the structure is shown in fig. 9, the light transmittance of 415-455nm blue light is modulated to 79% in the visible light range of 380-780nm, the light transmittance of the rest spectrum is greater than 99.5%, and the display screen formed by the display panel has the effect of reducing the light intensity of the blue light, so that the aim of healthy eye protection with low blue light is achieved.
The composite film 02 In example 1 may be a composite film obtained by multilayer coating of 2 or more kinds of materials, including metal, oxide, nitride, fluoride, or oxynitride containing Ti, Ta, Zr, Nb, Al, Si, Mg, Ir, Y, yb, Yi, In, W, Mo, V, Ni, Ag, Cu, or Au; the composite film has selective absorption, reflection or transmission effects on 415nm-455nm blue light, and is used for reducing 415nm-455nm blue light transmission in a visible light wave band of 380nm-780nm, and basically not changing the transmission of other frequency spectrums or having antireflection and permeability increasing effects. The structure of the composite film is as follows: 144nmMgF2/17nmTiO2/54nmMgF2/35nmTiO2/29nmMgF2/38nmTiO2/62nmMgF2/15nmTiO2/72nmMgF2/108nmTiO2/177nmMgF2/13nmTiO2/7.2nmMgF2/93nmTiO2/49.6nmMgF2/11.6nmTiO2/97.5nmMgF2and/G. The spectral curve of the composite film is shown in fig. 2.
The composite film is coated on the surface of the substrate 01 to form a display panel in a composite mode, and the display panel is attached to the display module to form a display screen. Specifically, as shown in fig. 4, the composite film 02 is located on the outer surface of the display panel or on the inner surface of the display panel (fig. 3).
The composite film 02 is plated on one surface of the substrate 01 or plated on two surfaces of the substrate 01 respectively. The outer surface of the display panel is plated with an antireflection film 03 (figures 5 and 6) in the wave band range of 380nm-780 nm. The composite film is coated on the surface of a light guide reflecting plate of the backlight module for display to form the reflecting plate in a composite mode, the composite film is used for modulating and reducing the blue light reflectivity of 415nm-455nm within the range of 380nm-780nm of a visible light wave band, and the rest frequency spectrums have the effect of high reflectivity (figure 7).
Example 2: an optical functional film with selective modulation of blue light intensity was coated on one surface of a substrate 01 with the composite optical functional film 02 of example 1, and on the other surface, titanium dioxide (TiO) was used2) With magnesium fluoride (MgF)2) Two materials with different refractive indexes, which are formed into the antireflection film 03 by a Physical Vapor Deposition (PVD), are shown in fig. 5, and have the following structure:
G/195.68nmMgF2/15.22nmTiO2/30.12nmMgF2/62.57nmTiO2/17.75nmMgF2/23.85nmTiO2/221.41nmMgF2/10.01nmTiO2/122.36 nmMgF2the spectral characteristic curve of the antireflection film 03 achieves the antireflection effect as shown in fig. 6, and the reflectivity in the visible light range of 380-780nm is less than 0.3% on average. The optical function film 02/substrate/antireflection film 03 is compounded to form a complete blue light inhibition and adjustment effect with 415nm-455nm as shown in figure 8, meanwhile, the antireflection film 03 greatly reduces the surface reflectivity of the display panel, and the formed display screen has a better visual effect and improves the long-time reading comfort.
Claims (6)
1. An optical functional film with the function of selectively modulating the intensity of blue light, which is characterized in that: the composite film is formed by compounding multiple layers of coating films, and the structure of the composite film is as follows:
144nmMgF2/17nmTiO2/54nmMgF2/35nmTiO2/29nmMgF2/38nmTiO2/62nmMgF2/15nmTiO2/72nmMgF2/108nmTiO2/177nmMgF2/13nmTiO2/7.2nmMgF2/93nmTiO2/49.6nmMgF2/11.6nmTiO2/97.5nmMgF2the composite film has selective absorption, reflection or transmission effects on 415nm-455nm blue light, and is used for reducing 415nm-455nm blue light transmission in a visible light band within a range of 380nm-780nm, and the transmission of the rest frequency spectrum is not changed basically or has antireflection and reflection increasing effects.
2. An optically functional film having the ability to selectively modulate the intensity of blue light as claimed in claim 1, wherein: the composite film is coated on the surface of the substrate to form the display panel in a composite mode, and the display panel is attached to the display module to form the display screen.
3. An optically functional film having the ability to selectively modulate the intensity of blue light as claimed in claim 1, wherein: the composite film is positioned on the outer surface of the display panel or positioned on the inner surface of the display panel.
4. An optically functional film having the ability to selectively modulate the intensity of blue light as claimed in claim 1, wherein: the composite film is plated on one surface of the substrate or respectively plated on two surfaces of the substrate for compounding.
5. An optically functional film having the ability to selectively modulate the intensity of blue light as claimed in claim 2, wherein: the outer surface of the display panel is plated with an antireflection film, and the structure of the antireflection film is as follows:
G/195.68nmMgF2/15.22nmTiO2/30.12nmMgF2/62.57nmTiO2/17.75nmMgF2/23.85nmTiO2/221.41nmMgF2/10.01nmTiO2/122.36 nmMgF2(ii) a The antireflection film is used for antireflection in the visible light wave band range of 380nm-780 nm.
6. An optically functional film having the ability to selectively modulate the intensity of blue light as claimed in claim 1, wherein: the composite film is plated on the surface of the light guide reflecting plate of the backlight module for display to form the reflecting plate.
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