Optical assembly and display device

Abstract

The present disclosure relates to an optical assembly and a display device. The optical assembly comprises a base layer, and an anti-glare layer and an anti-reflection layer which are disposed in sequence on the base layer. The anti-glare layer comprises silicon oxide; and the anti-reflection layer comprises five high-refractive-index sub-layers and five low-refractive-index sub-layers that are alternately stacked. Each of the high-refractive-index sub-layers has a refractive index of 1.6-4.0, each of the low-refractive-index sub-layers has a refractive index of 1.38-2.5, and the refractive indexes of the high-refractive-index sub-layers are greater than the refractive indexes of the low-refractive-index sub-layers. In a direction away from the anti-glare layer, each of the high-refractive-index sub-layers and each of the low-refractive-index sub-layers have a thickness within a respective specific range. The optical assembly in the present disclosure has the effects of anti-glare, anti-reflection and multi-angle color consistency under the condition that conventional optical indexes are satisfied.

Description

Optical assembly and display device TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of coating, in particular to an optical assembly and a display device. BACKGROUND

[0002] It is an obvious trend that automobiles develop towards intelligence, and intelligent driving, artificial intelligence and in-vehicle multimedia have become necessary functions of automobiles. As a medium for human-computer interaction, in-vehicle display and touch are indispensable configurations in intelligent automobiles. From the early single screen to the current double screen and triple screen, large size of the screen is an inevitable trend. Users have higher requirements for in-vehicle display screens, including anti-glare, reducing reflection and the like. However, the color of the display screen cannot be consistent at different angles in the prior art.

[0003] SUMMARY

[0004] The purpose of the present disclosure is to provide an optical assembly and a display device, which have the effects of anti-glare, anti-reflection and consistent color at multiple angles under the condition of meeting conventional optical indicators.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the present disclosure provides an optical assembly, which comprises a base layer and an anti-glare layer and an anti-reflection layer arranged in sequence on the base layer; the anti-glare layer comprises silicon oxide; the anti-reflection layer comprises five high refractive index sublayers and five low refractive index sublayers arranged alternately; the refractive index of each high refractive index sublayer is 1.6-4.0, the refractive index of each low refractive index sublayer is 1.38-2.5, and the refractive index of the high refractive index sublayer is greater than the refractive index of the low refractive index sublayer.

[0006] The thickness of the anti-glare layer is 70-95nm; along the direction away from the anti-glare layer, the thickness of the first high refractive index sublayer is 5-20nm; the thickness of the first low refractive index sublayer is 40-70nm; the thickness of the second high refractive index sublayer is 10-40nm, and the thickness of the second low refractive index sublayer is 40-60nm; the thickness of the third high refractive index sublayer is 10-30nm, and the thickness of the third low refractive index sublayer is 80-120nm; the thickness of the fourth high refractive index sublayer is 5-20nm, and the thickness of the fourth low refractive index sublayer is 40-70nm; the thickness of the fifth high refractive index sublayer is 80-120nm, and the thickness of the fifth low refractive index sublayer is 70-110nm.

[0007] Optionally, the thickness of the anti-glare layer is 75-90 nm; the thickness of the first high-refractive sub-layer is 5-15 nm; the thickness of the first low-refractive sub-layer is 55-65 nm; the thickness of the second high-refractive sub-layer is 10-25 nm, the thickness of the second low-refractive sub-layer is 50-60 nm; the thickness of the third high-refractive sub-layer is 10-20 nm, the thickness of the third low-refractive sub-layer is 100-120 nm; the thickness of the fourth high-refractive sub-layer is 5-15 nm, the thickness of the fourth low-refractive sub-layer is 45-60 nm; the thickness of the fifth high-refractive sub-layer is 100-120 nm, and the thickness of the fifth low-refractive sub-layer is 80-90 nm.

[0008] Optionally, the refractive index of the high-refractive sub-layer at 550 nm is 2.35 or above, and the extinction coefficient of the high-refractive sub-layer at 550 nm is 7×10 -4 The following;

[0009] Optionally, the high-refractive sub-layer comprises one or more of niobium oxide, titanium oxide, tantalum oxide, zirconium oxide, yttrium oxide, hafnium oxide, aluminum oxide, silicon nitride, silicon oxynitride, zinc sulfide, and hydrogenated silicon, preferably niobium oxide.

[0010] Optionally, the material of each high-refractive sub-layer is the same.

[0011] Optionally, the refractive index of the low-refractive sub-layer at 550 nm is 1.48 or below, and the extinction coefficient of the low-refractive sub-layer at 550 nm is 7×10 -4 The following;

[0012] Optionally, the low-refractive sub-layer comprises one or more of silicon dioxide, magnesium fluoride, aluminum oxide, aluminum fluoride, thorium fluoride, silicon nitride, silicon oxynitride, and aluminum nitride, preferably silicon dioxide.

[0013] Optionally, the material of each low-refractive sub-layer is the same.

[0014] Optionally, the glossiness of the anti-glare layer is 30-140, preferably 80-130, and the extinction coefficient of the anti-glare layer at 550 nm is 7×10 -4 The following; the refractive index of the base layer is 1.46-2.0, and the thickness of the base layer is 0.1-10 mm.

[0015] Optionally, the optical assembly further comprises an anti-fouling layer, which is disposed on the side of the anti-reflective layer away from the anti-glare layer.

[0016] The anti-fouling layer comprises a fluorine-containing polyether compound; the thickness of the anti-fouling layer is 5-30 nm, preferably 8-15 nm.

[0017] Optionally, the total thickness of the optical assembly is 100-1500 μm, preferably 1000-1200 μm; the total thickness of the anti-reflection layer is 200-1000 nm, preferably 300-700 nm.

[0018] Optionally, when the angle between the incident light and the surface of the anti-reflection layer is 10°, the apparent reflectivity x of the optical assembly is 0.5% or less;

[0019] When the angle is greater than 10° and less than 60°, the apparent reflectivity of the optical assembly is y, y≥x, and the difference between y and x is 0-5.

[0020] Optionally, when the angle between the incident light and the surface of the anti-reflection layer is 10-60°, the chroma a* of the optical assembly is -1 to -6, and the chroma b* is -1 to -6; and,

[0021] The absolute value p of the difference between the maximum and minimum values of the chroma a* is 3 or less, preferably 0-1.5; and the absolute value q of the difference between the maximum and minimum values of the chroma b* is 3 or less, preferably 0-1.5.

[0022] The second aspect of the present disclosure provides a display device comprising the optical assembly of the first aspect of the present disclosure.

[0023] By the above technical solution, the present disclosure sequentially arranges an anti-glare layer and an anti-reflection layer on one side of the base layer, the anti-reflection layer has five high-refractive sub-layers and five low-refractive sub-layers arranged alternately, and each sub-layer has a specific range of thickness, so that the optical assembly has the effects of anti-glare, anti-reflection and consistent color at multiple angles under the condition of meeting the conventional optical indicators. Other features and advantages of the present disclosure will be described in detail in the subsequent specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following specific embodiments to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0025] FIG. 1 is a structural schematic diagram of an optical assembly in Embodiment 1 of the present disclosure.

[0026] Legend 1: base layer; 2: anti-glare layer; 3: anti-reflection layer; 4: anti-fouling layer; 5: ink layer. DETAILED DESCRIPTION

[0027] The specific embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and do not limit the present disclosure.

[0028] The first aspect of the present disclosure provides an optical assembly, which comprises a base layer, an anti-glare layer and an anti-reflection layer arranged in sequence on the base layer; the anti-glare layer comprises silicon oxide; the anti-reflection layer comprises five high-refractive sub-layers and five low-refractive sub-layers arranged in alternation; the refractive index of each high-refractive sub-layer is 1.6-4.0, the refractive index of each low-refractive sub-layer is 1.38-2.5, and the refractive index of the high-refractive sub-layer is greater than that of the low-refractive sub-layer;

[0029] The thickness of the anti-glare layer is 70-95 nm; the thickness of the first high-refractive sub-layer is 5-20 nm in the direction away from the anti-glare layer; the thickness of the first low-refractive sub-layer is 40-70 nm; the thickness of the second high-refractive sub-layer is 10-40 nm, and the thickness of the second low-refractive sub-layer is 40-60 nm; the thickness of the third high-refractive sub-layer is 10-30 nm, and the thickness of the third low-refractive sub-layer is 80-120 nm; the thickness of the fourth high-refractive sub-layer is 5-20 nm, and the thickness of the fourth low-refractive sub-layer is 40-70 nm; the thickness of the fifth high-refractive sub-layer is 80-120 nm, and the thickness of the fifth low-refractive sub-layer is 70-110 nm.

[0030] The present disclosure arranges the anti-glare layer and the anti-reflection layer in sequence on one side of the base layer, the anti-reflection layer has five high-refractive sub-layers and five low-refractive sub-layers arranged in alternation, and each sub-layer has a specific range of thickness, so that the optical assembly has the effects of anti-glare, anti-reflection and consistent color at multiple angles under the condition of meeting the conventional optical indicators.

[0031] According to an embodiment of the present disclosure, the thickness of the anti-glare layer is 75-90 nm; the thickness of the first high-refractive sub-layer is 5-15 nm; the thickness of the first low-refractive sub-layer is 55-65 nm; the thickness of the second high-refractive sub-layer is 10-25 nm, and the thickness of the second low-refractive sub-layer is 50-60 nm; the thickness of the third high-refractive sub-layer is 10-20 nm, and the thickness of the third low-refractive sub-layer is 100-120 nm; the thickness of the fourth high-refractive sub-layer is 5-15 nm, and the thickness of the fourth low-refractive sub-layer is 45-60 nm; the thickness of the fifth high-refractive sub-layer is 100-120 nm, and the thickness of the fifth low-refractive sub-layer is 80-90 nm. The above embodiment is advantageous in making the optical assembly have the effects of anti-glare, anti-reflection and consistent color at multiple angles.

[0032] According to an embodiment of the present disclosure, the refractive index of the high-refractive sub-layer at 550 nm is 2.35 or more, and the extinction coefficient of the high-refractive sub-layer is 7×10 -4The above-mentioned embodiments are advantageous in that the optical assembly has the effects of anti-glare, anti-reflection and multi-angle color consistency.

[0033] According to an embodiment of the present disclosure, the high-refractive sub-layer comprises one or more of niobium oxide, titanium oxide, tantalum oxide, zirconium oxide, yttrium oxide, hafnium oxide, aluminum oxide, silicon nitride, silicon oxynitride, zinc sulfide and hydrogenated silicon, preferably niobium oxide.

[0034] According to an embodiment of the present disclosure, the material of each of the high-refractive sub-layers is the same. The above-mentioned embodiments are advantageous in that the optical assembly has the effects of anti-glare, anti-reflection and multi-angle color consistency.

[0035] According to an embodiment of the present disclosure, the low-refractive sub-layer has a refractive index of 1.48 or less at 550 nm, and an extinction coefficient of 7x10 -4 The above-mentioned embodiments are advantageous in that the optical assembly has the effects of anti-glare, anti-reflection and multi-angle color consistency.

[0036] According to an embodiment of the present disclosure, the low-refractive sub-layer comprises one or more of silicon dioxide, magnesium fluoride, aluminum oxide, aluminum fluoride, thorium fluoride, silicon nitride, silicon oxynitride and aluminum nitride, preferably silicon dioxide.

[0037] According to an embodiment of the present disclosure, the material of each of the low-refractive sub-layers is the same. The above-mentioned embodiments are advantageous in that the optical assembly has the effects of anti-glare, anti-reflection and multi-angle color consistency.

[0038] According to an embodiment of the present disclosure, the film thickness uniformity of each of the high-refractive sub-layers and each of the low-refractive sub-layers is 1% or less.

[0039] According to an embodiment of the present disclosure, the anti-glare layer has a glossiness of 30-140, preferably 80-130, and an extinction coefficient of 7x10 -4 The above-mentioned embodiments are advantageous in that the optical assembly has the effects of anti-glare, anti-reflection and multi-angle color consistency.

[0040] According to an embodiment of the present disclosure, the base layer has a refractive index of 1.46-2.0, and a thickness of 0.1-10 mm. The present disclosure does not make special limitations on the specific selection of the base layer, which may, for example, be one or more of high-alumina cover plate glass, soda-lime silicate glass, alumino-silicate glass, borosilicate glass, alkali-free glass and quartz glass.

[0041] According to an embodiment of the present disclosure, the optical assembly further comprises an anti-fouling layer disposed on the side of the anti-reflection layer away from the anti-glare layer; the anti-fouling layer comprises a fluorine-containing polyether compound; the thickness of the anti-fouling layer is 5-30 nm, preferably 8-15 nm. The above-mentioned embodiment is conducive to reducing the surface energy of the substrate layer, effectively reducing the attachment of dirt, and at the same time, the fluorine-containing polyether compound has a low friction coefficient, so that the optical assembly is not easy to attach dirt and has a smooth touch.

[0042] According to an embodiment of the present disclosure, the total thickness of the optical assembly is 100-1500 μm, preferably 1000-1200 μm; the total thickness of the anti-reflection layer is 200-1000 nm, preferably 300-700 nm.

[0043] According to an embodiment of the present disclosure, when the included angle between the incident light and the surface of the anti-reflection layer is 10°, the apparent reflectivity x of the optical assembly is 0.5% or less; when the included angle is greater than 10° and less than 60°, the apparent reflectivity of the optical assembly is y, y≥x, and the difference between y and x is 0-5. The above-mentioned embodiment is conducive to the consistency of the color of the optical assembly at different angles.

[0044] According to an embodiment of the present disclosure, when the included angle between the incident light and the surface of the anti-reflection layer is 10-60°, the colorimetric a* of the optical assembly is -1 to -6, and the colorimetric b* is -1 to -6; and the absolute value p of the difference between the maximum value and the minimum value of the colorimetric a* is 3 or less, preferably 0-1.5; the absolute value q of the difference between the maximum value and the minimum value of the colorimetric b* is 3 or less, preferably 0-1.5. The above-mentioned embodiment is conducive to the consistency of the color of the optical assembly at different angles.

[0045] The second aspect of the present disclosure provides a display device comprising the optical assembly of the first aspect of the present disclosure.

[0046] The third aspect of the present disclosure provides a method for preparing the optical assembly of the first aspect of the present disclosure, the method comprising performing anti-glare treatment on the substrate layer to form the anti-glare layer; and forming the anti-reflection layer on the anti-glare layer.

[0047] According to an embodiment of the present disclosure, the anti-glare treatment can be a conventional technique in the art. For example, the anti-glare treatment can be a wet spraying or etching treatment to form the anti-glare layer, and the spraying agent used in the wet spraying can comprise one or more of 1-methoxy-2-propyl acetate, 1-methoxy-2-propanol, 2-propanol, and 2-methoxy-1-propyl acetate.

[0048] According to an embodiment of the present disclosure, the formation of the anti-reflection layer can be a conventional technical condition in the art, and the anti-reflection layer can reach the thickness of the present disclosure. For example, it can be performed by a magnetron sputtering coating machine, and the use method and condition of the magnetron sputtering coating machine are not specifically limited.

[0049] According to an embodiment of the present disclosure, the formation of the anti-fouling layer can be a conventional technical condition in the art, and the anti-fouling layer can reach the thickness of the present disclosure. For example, it can be performed by an evaporation coating method, and the fluorine-containing polyether compound is evaporated and deposited on the anti-reflection layer.

[0050] According to an embodiment of the present disclosure, the method further comprises forming an ink layer on the side of the substrate layer away from the anti-glare layer. The present disclosure does not specifically limit the formation method of the ink layer and the parameters of the ink layer.

[0051] The present disclosure is further described in detail by the following examples, but does not constitute a limitation on the present disclosure. Unless otherwise specified, the reagents used are commercially available. The perfluoropolyether compound used in the present disclosure is purchased from Daikin Company, and the AG liquid is purchased from PPG, which are conventional reagents in the art.

[0052] The substrate layer used in the present disclosure is panda high-aluminum cover plate glass MN228, and the refractive index is 1.51 and the thickness is 1.1 mm.

[0053] The model of the magnetron sputtering coating machine is SITO-1800; the evaporation coating method is performed on the machine with the model of SITO-1800; the apparent reflectance of the optical assembly is tested by the Hewlett Packard CM700d instrument; the chroma a* and b* are tested by the Hewlett Packard CM700d instrument; and the brightness is tested by the Hewlett Packard CM700d instrument.

[0054] Example 1

[0055] The structure of the optical assembly of Example 1 is shown in Table 1.

[0056] The specific preparation method is as follows:

[0057] As shown in FIG. 1, one side of the substrate layer 1 is subjected to anti-glare treatment to form an anti-glare layer 2; the anti-glare treatment is wet spraying, the product is placed on the spraying equipment platform, the automatic spray head atomizes the AG liquid by compressed air, and deposits it on the substrate, and then the material is cured by baking, the gloss of the anti-glare layer is 100, and the extinction coefficient is about 0;

[0058] A anti-reflection layer 3 is formed on the anti-glare layer 2 by using a magnetron sputtering coating machine. The anti-reflection layer 3 comprises, in order from the side away from the anti-glare layer, a first high refractive index sub-layer, a first low refractive index sub-layer, a second high refractive index sub-layer, a second low refractive index sub-layer, a third high refractive index sub-layer, a third low refractive index sub-layer, a fourth high refractive index sub-layer, a fourth low refractive index sub-layer, a fifth high refractive index sub-layer, and a fifth low refractive index sub-layer, each high refractive index sub-layer being an Nb2O5 layer having a refractive index of 2.35 at 550 nm and an extinction coefficient of 0, and each low refractive index sub-layer being an SiO2 layer having a refractive index of 1.46 at 550 nm and an extinction coefficient of 0.

[0059] A stain-proof layer 4 is formed on the fifth low refractive index sub-layer away from the anti-glare layer by using an evaporation coating method. The thickness of the stain-proof layer is 10 nm, and the stain-proof layer is a perfluoropolyether compound.

[0060] An ink layer 5 is formed on the substrate layer away from the anti-glare layer.

[0061] Example 2

[0062] The method of this example is the same as that of Example 1, except that the high refractive index sub-layers are SiN layers having a refractive index of 2.0 at 550 nm and an extinction coefficient of 0, and the structure of the optical assembly is as shown in Table 1.

[0063] Example 3

[0064] The method of this example is the same as that of Example 1, except that the low refractive index sub-layers are as follows: the first low refractive index sub-layer, the second low refractive index sub-layer, the third low refractive index sub-layer, and the fourth low refractive index sub-layer are Al2O3 layers having a refractive index of 1.66 at 550 nm and an extinction coefficient of 0; and the fifth low refractive index sub-layer is an SiO2 layer having a refractive index of 1.46 at 550 nm and an extinction coefficient of 0, and the structure of the optical assembly is as shown in Table 1.

[0065] Comparative Example 1

[0066] The method of this comparative example is the same as that of Example 1, except that the thicknesses of the five low refractive index sub-layers are different from those of Example 1, and the structure of the optical assembly is as shown in Table 1.

[0067] Comparative Example 2

[0068] The method of this comparative example is the same as that of Example 1, except that the thicknesses of the first high refractive index sub-layer, the first low refractive index sub-layer, the second high refractive index sub-layer, the second low refractive index sub-layer, the third high refractive index sub-layer, the third low refractive index sub-layer, the fourth low refractive index sub-layer, the fifth high refractive index sub-layer, and the fifth low refractive index sub-layer are different from those of Example 1, and the structure of the optical assembly is as shown in Table 1.

[0069] Table 1

[0070] Test Example

[0071] The color, brightness and apparent reflectance of the optical assemblies of Examples 1 to 3 and Comparative Examples 1 and 2 were tested at an incident light angle of 10 to 60° with respect to the antireflection layer, and the results are shown in Tables 2 to 6.

[0072] Table 2

[0073] The optical assembly of Example 1 had an apparent reflectance x of 0.26 at an incident light angle of 10° with respect to the surface of the antireflection layer, and an apparent reflectance y at an incident light angle of more than 10° and less than 60°, and the difference between y and x was 0 to 5. The maximum value of the color a* was -3.06, the minimum value was -3.97, and the absolute value of the difference p was 0.91; the maximum value of the color b* was -4.13, the minimum value was -4.95, and the absolute value of the difference q was 0.82.

[0074] Table 3

[0075] The optical assembly of Example 2 had an apparent reflectance x of 0.54 at an incident light angle of 10° with respect to the surface of the antireflection layer, and an apparent reflectance y at an incident light angle of more than 10° and less than 60°, and the difference between y and x was 0 to 5. The maximum value of the color a* was -1.9, the minimum value was -3.1, and the absolute value of the difference p was 1.2; the maximum value of the color b* was -4.0, the minimum value was -5.1, and the absolute value of the difference q was 1.0.

[0076] Table 4

[0077] The optical assembly of Example 3 had an apparent reflectance x of 0.42 at an incident light angle of 10° with respect to the surface of the antireflection layer, and an apparent reflectance y at an incident light angle of more than 10° and less than 60°, and the difference between y and x was 0 to 5. The maximum value of the color a* was -2.2, the minimum value was -4.5, and the absolute value of the difference p was 2.3; the maximum value of the color b* was -3.9, the minimum value was -5.4, and the absolute value of the difference q was 1.5.

[0078] Table 5

[0079] The optical component of the comparative example 1 has a visual perceived reflectance x of 2.23 when the incident light and the surface of the anti-reflection layer form an angle of 10°, and has a visual perceived reflectance y when the angle is greater than 10° and less than 60°, and the difference between y and x is 4.98. The maximum value of the chroma a* is -4.3, the minimum value is -17, and the absolute value of the difference is 12.7; the maximum value of the chroma b* is -2.6, the minimum value is -11.7, and the absolute value of the difference is 8.1.

[0080] Table 6

[0081] The optical component of the comparative example 2 has a visual perceived reflectance x of 1.62 when the incident light and the surface of the anti-reflection layer form an angle of 10°, and has a visual perceived reflectance y when the angle is greater than 10° and less than 60°, and the difference between y and x is 4.75. The maximum value of the chroma a* is 0.9, the minimum value is -3.9, and the absolute value of the difference is 4.8; the maximum value of the chroma b* is 0.5, the minimum value is -11.3, and the absolute value of the difference is 11.8.

[0082] According to the data in Tables 2-6, compared with the comparative examples 1-2, the optical component obtained by the embodiment of the present disclosure has a difference between y and x of 0-5, an absolute value p of the difference between the maximum value and the minimum value of the chroma a* of 3 or less, and an absolute value q of the difference between the maximum value and the minimum value of the chroma b* of 3 or less, and has the effects of anti-glare, anti-reflection, and consistent color at multiple angles.

[0083] Compared with the embodiment 2, the high-refractive sub-layer of the embodiment 1 has a refractive index at 550 nm within the preferred range of the present disclosure, has a smaller visual perceived reflectance x of the optical component when the incident light and the surface of the anti-reflection layer form an angle of 10°, and has smaller absolute values of the chroma a* difference and the chroma b* difference at multiple angles, and the optical component has a better consistency in color at multiple angles than the embodiment 2.

[0084] Compared with the embodiment 3, the low-refractive sub-layer of the embodiment 1 has a refractive index at 550 nm within the preferred range of the present disclosure, has a smaller visual perceived reflectance x of the optical component when the incident light and the surface of the anti-reflection layer form an angle of 10°, and has smaller absolute values of the chroma a* difference and the chroma b* difference at multiple angles, and the optical component has a better consistency in color at multiple angles than the embodiment 3.

[0085] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0086] It should also be noted that various technical features described in the above detailed description are capable of being combined in any suitable manner unless otherwise explicitly stated. To avoid unnecessary repetition, various possible combinations of features are not all explicitly described in the present disclosure.

[0087] Furthermore, various embodiments of the present disclosure can be combined in any suitable manner, as long as it does not contradict the idea of the present disclosure, it should also be considered as disclosed in the present disclosure.

Claims

1. An optical assembly, comprising: The optical assembly comprises a base layer, an anti-glare layer and an anti-reflection layer arranged in sequence on the base layer; the anti-glare layer comprises silicon oxide; the anti-reflection layer comprises five high-refractive sub-layers and five low-refractive sub-layers arranged alternately; the refractive index of each high-refractive sub-layer is 1.6-4.0, the refractive index of each low-refractive sub-layer is 1.38-2.5, and the refractive index of the high-refractive sub-layer is greater than that of the low-refractive sub-layer; The thickness of the anti-glare layer is 70-95 nm; the thickness of the first high-refractive sub-layer is 5-20 nm in the direction away from the anti-glare layer; the thickness of the first low-refractive sub-layer is 40-70 nm; the thickness of the second high-refractive sub-layer is 10-40 nm, and the thickness of the second low-refractive sub-layer is 40-60 nm; the thickness of the third high-refractive sub-layer is 10-30 nm, and the thickness of the third low-refractive sub-layer is 80-120 nm; the thickness of the fourth high-refractive sub-layer is 5-20 nm, and the thickness of the fourth low-refractive sub-layer is 40-70 nm; the thickness of the fifth high-refractive sub-layer is 80-120 nm, and the thickness of the fifth low-refractive sub-layer is 70-110 nm.

2. The optical assembly of claim 1, wherein, The thickness of the anti-glare layer is 75-90 nm; the thickness of the first high-refractive sub-layer is 5-15 nm; the thickness of the first low-refractive sub-layer is 55-65 nm; the thickness of the second high-refractive sub-layer is 10-25 nm, and the thickness of the second low-refractive sub-layer is 50-60 nm; the thickness of the third high-refractive sub-layer is 10-20 nm, and the thickness of the third low-refractive sub-layer is 100-120 nm; the thickness of the fourth high-refractive sub-layer is 5-15 nm, and the thickness of the fourth low-refractive sub-layer is 45-60 nm; the thickness of the fifth high-refractive sub-layer is 100-120 nm, and the thickness of the fifth low-refractive sub-layer is 80-90 nm.

3. The optical assembly of claim 1 or 2, wherein, The high refractive index sublayer has a refractive index of 2.35 or more at 550 nm, and an extinction coefficient of 7 x 10 -4 The following; Optionally, the high-refractive sub-layer comprises one or more of niobium oxide, titanium oxide, tantalum oxide, zirconium oxide, yttrium oxide, hafnium oxide, aluminum oxide, silicon nitride, silicon oxynitride, zinc sulfide and hydrogenated silicon, preferably niobium oxide; Optionally, the material of each high-refractive sub-layer is the same.

4. The optical assembly of any of claims 1-3, wherein, The low refractive index sublayer has a refractive index of 1.48 or less at 550 nm, and an extinction coefficient of 7 x 10 -4 The following: Optionally, the low-refractive sub-layer comprises one or more of silicon dioxide, magnesium fluoride, aluminum oxide, aluminum fluoride, thorium fluoride, silicon nitride, silicon oxynitride and aluminum nitride, preferably silicon dioxide; Optionally, the material of each low-refractive sub-layer is the same.

5. The optical assembly according to any one of claims 1-4, wherein, The anti-glare layer has a glossiness of 30-140, preferably 80-130, and an extinction coefficient at 550 nm of 7 x 10 -4 The base layer has a refractive index of 1.46-2.0 and a thickness of 0.1-10 mm.

6. The optical assembly of any of claims 1-5, wherein, The optical assembly further comprises an anti-fouling layer arranged on the side of the anti-reflection layer away from the anti-glare layer; The anti-fouling layer comprises a fluorine-containing polyether compound; the thickness of the anti-fouling layer is 5-30 nm, preferably 8-15 nm.

7. The optical assembly of any of claims 1-6, wherein, The total thickness of the optical assembly is 100-1500 μm, preferably 1000-1200 μm; the total thickness of the anti-reflection layer is 200-1000 nm, preferably 300-700 nm.

8. The optical assembly of any of claims 1-7, wherein, When the included angle between the incident light and the surface of the anti-reflection layer is 10°, the apparent reflectivity x of the optical assembly is 0.5% or less; When the included angle is greater than 10° and less than 60°, the apparent reflectivity of the optical assembly is y, y > x, and the difference between y and x is 0-5.

9. The optical assembly of claim 8, wherein, When the included angle between the incident light and the surface of the anti-reflection layer is any angle of 10-60°, the chroma a* of the optical assembly is -1 to -6, and the chroma b* is -1 to -6; and, The absolute value p of the difference between the maximum value and the minimum value of the chroma a* is less than 3, preferably 0-1.5; and the absolute value q of the difference between the maximum value and the minimum value of the chroma b* is less than 3, preferably 0-1.

5.

10. A display device, characterized by comprising: The optical assembly according to any one of claims 1-9.

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