High-contrast anti-dazzle integrated black cover plate

Abstract

The utility model discloses a high-contrast anti-dazzle integrated black cover plate, which comprises a transparent substrate, the anti-reflection light absorption layer is deposited on the to-be-coated surface of the transparent substrate and comprises at least two low-refractive-index film layers, at least one light absorption film layer group and at least one high-refractive-index film layer, and the at least two low-refractive-index film layers are arranged on the bottom layer, close to the to-be-coated surface of the transparent substrate, of the anti-reflection light absorption layer and the surface layer, away from the transparent substrate, of the anti-reflection light absorption layer; the light absorption film layer group comprises a light absorption film layer and two transition film layers arranged on the two sides of the light absorption film layer, the high-refractive-index film layer is arranged between the low-refractive-index film layer and the light absorption film layer group, the refractive index of the transition film layers is between the refractive index of the low-refractive-index film layer and the refractive index of the high-refractive-index film layer, the low-refractive-index film layer is a SiO2 film layer, and the high-refractive-index film layer is a Nb2O5 film layer; and the anti-fingerprint layer is arranged on the surface of the anti-reflection light absorption layer. The cover plate provided by the utility model can further reduce the intensity of reflected light, improve the contrast ratio of a screen and optimize the display effect, and is anti-static and scratch-resistant at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of display screen, especially relates to a high contrast ratio anti -dazzle integrated black cover plate. BACKGROUND

[0002] In recent years, the tide of automobile electrification and intelligentization is rapidly advancing, and the vehicle display industry is developing rapidly. The new functions such as automatic driving and intelligent cabin gradually develop and improve, which puts forward higher requirements on the reliability, ease of use and even beauty of vehicle display, and promotes the development and improvement of vehicle display in the direction of large size, multiple screens and high resolution.

[0003] Unlike mobile phones, computers and other portable displays that usually work in indoor environments and can be moved at any time, vehicle displays often work under strong light such as sunlight and light, and sometimes encounter extreme environments such as rapid alternation of light and dark. When strong light shines on the screen surface of the vehicle display, the strong reflected light will make it difficult to distinguish the content displayed on the screen. When light and dark alternate, the extreme brightness contrast on the screen surface may also cause glare, which is extremely easy to cause visual fatigue for the driver, and long-term use may also cause the driver's eyesight to decline.

[0004] Generally, the effects of strong reflected light and extreme brightness contrast are reduced by adding an anti-glare layer and a reflection-reducing layer on the screen surface.

[0005] For example, Chinese patent CN 113699496A discloses an anti-glare low-reflection film and a manufacturing method thereof, which forms an anti-glare layer by spraying and a reflection-reducing layer by vacuum magnetron sputtering. The anti-glare layer formed by spraying converts reflected light into scattered light by forming a small concave-convex structure on the screen surface, thereby avoiding direct reflection of light into the eye to cause glare. Although this small concave-convex structure can avoid glare, it will also affect the clarity of the display to some extent, and will also affect the scratch resistance of the screen. The anti-glare layer formed by etching also has similar problems. UTILITY MODEL CONTENT

[0006] To solve the above problems, the utility model aims to provide a high contrast ratio anti-glare integrated black cover plate which can further reduce the intensity of reflected light and improve the screen contrast ratio after being attached to a liquid crystal display, and has a clearer display effect under strong light.

[0007] Based on the above problems, the technical scheme provided by the utility model is:

[0008] The high contrast ratio anti-glare integrated black cover plate comprises:

[0009] A transparent substrate;

[0010] The anti-reflective light-absorbing layer is deposited on the surface of the transparent substrate to be plated, and comprises at least two low-refractive index film layers, at least one light-absorbing film layer group and at least one high-refractive index film layer, the at least two low-refractive index film layers are arranged at the bottom layer close to the surface of the transparent substrate to be plated and the surface layer away from the transparent substrate, the light-absorbing film layer group comprises a light-absorbing film layer and two transition film layers arranged on both sides of the light-absorbing film layer, the high-refractive index film layer is arranged between the low-refractive index film layer and the light-absorbing film layer group, the refractive index of the transition film layer is between the low-refractive index film layer and the high-refractive index film layer, the low-refractive index film layer is a SiO2 film layer, and the high-refractive index film layer is a Nb2O5 film layer;

[0011] The anti-fingerprint layer is arranged on the surface of the anti-reflective light-absorbing layer.

[0012] In some embodiments, the light-absorbing film layer is a diamond-like film layer, and the transition film layer is a Si3N4 film layer.

[0013] In some embodiments, the refractive index of the low-refractive index film layer is 1.3-1.5, the refractive index of the high-refractive index film layer is 2.2-2.4, the refractive index of the transition film layer is 1.9-2.1, and the refractive index of the light-absorbing film layer is 2.2-2.4.

[0014] In some embodiments, the anti-reflective light-absorbing layer comprises, from close to the transparent substrate to away from the transparent substrate, a SiO2 film layer, a Nb2O5 film layer, a Si3N4 film layer, a diamond-like film layer, a Si3N4 film layer and a SiO2 film layer.

[0015] In some embodiments, the thickness of each of the SiO2 film layer, the Nb2O5 film layer, the Si3N4 film layer, the diamond-like film layer, the Si3N4 film layer and the SiO2 film layer is 20-30 nm, 10-60 nm, 20-90 nm, 10-70 nm, 5-25 nm and 40-90 nm, respectively.

[0016] In some embodiments, the transparent substrate is tempered glass with a thickness of 40-100 mu m.

[0017] In some embodiments, the thickness of the anti-fingerprint layer is 2-10 nm.

[0018] Compared with the prior art, the anti-reflective light-absorbing layer has the following advantages:

[0019] (1) The optical performance adjustment film layer structure of the liquid crystal display screen and the optical adhesive used in actual production further reduces the intensity of reflected light and improves the overall contrast of the screen, so that the screen display content is clearer, and the screen can be easily seen under sunlight, and visual discomfort is not easily caused.

[0020] (2) The low resistance and high hardness of the cover surface make the screen less susceptible to electrostatic discharge and more scratch-resistant. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of an embodiment of the high-contrast anti-glare integrated black cover plate of this utility model;

[0023] in:

[0024] 1. Transparent substrate;

[0025] 2. Low refractive index film;

[0026] 3. Transition film layer;

[0027] 4. High refractive index film;

[0028] 5. Light-absorbing film layer;

[0029] 6. Anti-fingerprint layer. Detailed Implementation

[0030] The above solution will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrating the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0031] like Figure 1 The diagram shown is a structural schematic of an embodiment of the present invention, which provides a high-contrast anti-glare integrated black cover plate, including a transparent substrate 1, an anti-reflective light-absorbing layer deposited on the surface of the transparent substrate 1 to be coated, and an anti-fingerprint layer 6 disposed on the surface of the anti-reflective light-absorbing layer.

[0032] The transparent substrate 1 is made of tempered glass with a thickness of 40 to 100 μm.

[0033] The anti-reflective light-absorbing layer comprises at least two low-refractive film layers 2, at least one light-absorbing film layer group, and at least one high-refractive film layer 4. The at least two low-refractive film layers 2 are arranged at the bottom layer close to the film-coated surface of the transparent substrate 1 and the surface layer away from the transparent substrate 1. The light-absorbing film layer group comprises a light-absorbing film layer 5 and two transition film layers 3 arranged on both sides of the light-absorbing film layer 5. The high-refractive film layer 4 is arranged between the low-refractive film layer 2 and the light-absorbing film layer group. The refractive index of the transition film layer 3 is between the low-refractive film layer 2 and the high-refractive film layer 4. The low-refractive film layer 2 is a SiO2 film layer, and the high-refractive film layer 4 is a Nb2O5 film layer.

[0034] In order to prevent the adverse effects of static electricity discharge on the liquid crystal display screen during the use of the display, the light-absorbing film layer is made of a material with a lower resistivity than conventional film-coated materials such as SiO2 and Nb2O5, but not too low to affect the touch function of the display. Preferably, the diamond-like carbon film layer is used as the light-absorbing film layer 5.

[0035] Since the bonding force between the diamond-like carbon film layer as the light-absorbing film layer 5 and conventional film-coated materials such as SiO2 and Nb2O5 is not good, the Si3N4 film layer with good bonding force between the diamond-like carbon film layer, the SiO2 film layer, and the Nb2O5 film layer is added as the transition film layer 3 to improve the overall reliability of the film layer.

[0036] The refractive index of the low-refractive film layer 2 in the anti-reflective light-absorbing layer is 1.3-1.5, the refractive index of the high-refractive film layer 4 is 2.2-2.4, the refractive index of the transition film layer 3 is 1.9-2.1, and the refractive index of the light-absorbing film layer 5 is 2.2-2.4.

[0037] In the preferred scheme, the anti-reflective light-absorbing layer comprises SiO2 film layers, Nb2O5 film layers, Si3N4 film layers, diamond-like carbon film layers, Si3N4 film layers, and SiO2 film layers arranged in the order from the transparent substrate to the direction away from the transparent substrate, with thicknesses of 20-30 nm, 10-60 nm, 20-90 nm, 10-70 nm, 5-25 nm, and 40-90 nm, respectively.

[0038] The anti-fingerprint layer 6 is formed by spraying anti-fingerprint liquid on the outer surface of the anti-reflective light-absorbing layer and baking, with a thickness of 2-10 nm.

[0039] The preparation method of the high-contrast anti-glare integrated black cover plate comprises the following steps:

[0040] S1. Cleaning the transparent substrate by using a cleaning machine;

[0041] S2. Depositing an anti-reflective light-absorbing layer on the transparent substrate by using a vacuum magnetron sputtering film coating technology. The transparent substrate to be coated is treated by using plasma cleaning before film coating.

[0042] S3, spraying an anti-fingerprint coating solution on the anti-reflective light-absorbing layer by spraying, and baking and curing to form an anti-fingerprint layer, wherein the surface of the anti-reflective light-absorbing layer is treated by plasma cleaning before spraying.

[0043] Contrast is a value used to measure the difference in brightness between light and dark areas in an image. Generally, the greater the contrast, the clearer and more eye-catching the image, and the more vivid and bright the colors. For a vehicle display, the contrast generally refers to the ratio of the brightness of the same point on the screen when the screen displays the brightest (white screen) to the brightness of the screen when the screen displays the darkest (black screen), i.e., the maximum value that the screen display image contrast can reach. The vehicle display can actively adjust the contrast of the screen display image through a program, but its adjustable range is limited by the maximum value. The present application mainly focuses on the maximum value that the screen display image can reach. Unless otherwise specified, the contrast described in the present application is the contrast of the vehicle display.

[0044] Considering the contrast of the screen of the vehicle display, it can be considered that the brightness of a certain point on the screen is mainly composed of the light transmitted through the cover plate and the ambient light reflected by the screen surface. The brightness of the liquid crystal display screen when it is white is denoted as L L , and the screen is almost not bright when it is black. The comprehensive reflectivity of the bonding surface after the optical adhesive and the cover plate are bonded is R L , the reflectivity and transmittance of the cover plate surface are R CG and T CG , respectively, and the brightness of the ambient light irradiated on the screen surface is L E . At this time, the contrast of the screen can be generally represented by the following formula:

[0045]

[0046] wherein the brightness L E of the ambient light irradiated on the screen surface varies with the environment, and for a specific test environment, L E is a certain value. According to the above formula, the value of L E will affect the change rate of the contrast when other parameters change, but will not change the change trend.

[0047] In a specific test environment, the value of L E is determined, and assuming that the reflectivity and transmittance of the cover plate surface R CG and T CG are determined, according to the above formula, the greater the brightness L L of the liquid crystal display screen when it is white, the smaller the surface reflectivity R L , and the greater the contrast of the screen.

[0048] When the cover plate is bonded with a specific liquid crystal display screen in a specific test environment, and the remaining parameters are determined, the reflectivity and transmittance of the cover plate surface R CG and T CGdetermines the contrast ratio of the screen. Considering the need to weaken the strong reflection of light on the surface of the screen, the reflectivity R CG is generally required to be less than 0.5% or lower. When the reflectivity R CG of the surface of the cover plate is less than 0.5% or lower, the contrast ratio of the screen is determined by the denominator part T CG . The contrast ratio of the screen is greater, the closer the reflectivity R of the surface of the cover plate is to 0, and the closer the transmittance T CG of the cover plate is to 1, and the contrast ratio of the screen takes the maximum value only when R T = 0 and T CG = 1.

[0049] According to the above conclusion, by adjusting the film layer structure of the anti-reflective light-absorbing layer of the cover plate, the reflectivity and the transmittance of the surface of the cover plate can be made to be close to the specific value, which can improve the contrast ratio of the vehicle-mounted display to a certain extent. However, since the display effect of the screen is also affected by factors such as brightness, the actual film layer structure adjustment also needs to refer to the actual display effect of the screen, and the film plating process needs to be selected in combination with factors such as cost.

[0050] At present, the comprehensive reflectivity of the bonded surface of the commonly used liquid crystal display screen is usually about 0.5-1% according to different processes. Two representative film systems which can make the comprehensive reflectivity of the bonded surface of the liquid crystal display screen close to the maximum value at about 0.5% and 1% respectively are described.

[0051] Example 1

[0052] The transparent substrate is selected to be 60 μm thick tempered glass. After the transparent substrate is plasma cleaned on the surface to be plated, a vacuum magnetron sputtering plating film technology is used to sequentially deposit a SiO2 film layer with a thickness of about 25 nm, a Nb2O5 film layer with a thickness of about 19 nm, a Si3N4 film layer with a thickness of about 73 nm, a diamond-like film layer with a thickness of about 24 nm, a Si3N4 film layer with a thickness of about 12 nm, and a SiO2 film layer with a thickness of about 68 nm to form an anti-reflective light-absorbing layer. The surface of the anti-reflective light-absorbing layer is plasma cleaned, and an anti-fingerprint film layer is formed by spraying anti-fingerprint medicine and baking.

[0053] Example 2

[0054] The transparent substrate is selected to be 60 μm thick tempered glass. After the transparent substrate is plasma cleaned on the surface to be plated, a vacuum magnetron sputtering plating film technology is used to sequentially deposit a SiO2 film layer with a thickness of about 25 nm, a Nb2O5 film layer with a thickness of about 45 nm, a Si3N4 film layer with a thickness of about 33 nm, a diamond-like film layer with a thickness of about 52 nm, a Si3N4 film layer with a thickness of about 13 nm, and a SiO2 film layer with a thickness of about 54.5 nm to form an anti-reflective light-absorbing layer. The surface of the anti-reflective light-absorbing layer is plasma cleaned, and an anti-fingerprint film layer is formed by spraying anti-fingerprint medicine and baking.

[0055] Comparative Example 1

[0056] Comparative Example 1 does not add light-absorbing film layer, and the transparent substrate is selected as 60 μm thick tempered glass. The transparent substrate is plasma cleaned on the surface to be plated, and then a vacuum magnetron sputtering technology is used to sequentially deposit a 25 nm thick SiO2 film layer, a 10 nm thick Nb2O5 film layer, a 44 nm thick SiO2 film layer, a 29 nm thick Nb2O5 film layer, a 7 nm thick SiO2 film layer, an 86 nm thick Nb2O5 film layer, and an 86 nm thick SiO2 film layer to form an anti-reflective film layer. The anti-reflective film layer surface is plasma cleaned, the anti-fingerprint solution is sprayed, and the anti-fingerprint film layer is formed after baking.

[0057] The liquid crystal display screen is selected, and the comprehensive reflectivity of the liquid crystal display screen and the cover plate after the liquid crystal display screen is attached to the cover plate is estimated using the cover plate of Comparative Example 1 which does not contain a light-absorbing film layer. The cover plate of Comparative Example 1 is a sample of the existing mature process. The single surface reflectivity and double surface transmittance of the film surface of the cover plate of Comparative Example 1 are measured (see Table 1), and then the cover plate is attached to the liquid crystal display screen using optical glue, and the screen reflectivity is measured (see Table 2). Since the liquid crystal display screen is attached with a polarizing sheet, when the screen after attachment is measured, the same point is measured orthogonally twice to take the average value as the reflectivity data of the point. Among them:

[0058] Screen reflectivity = cover plate surface reflectivity R CG + comprehensive reflectivity of the attachment surface R L × (cover plate surface transmittance T CG ) 2

[0059] The single surface reflectivity of the cover plate is the cover plate surface reflectivity R CG , and the double surface transmittance of the cover plate is not the cover plate surface transmittance T CG . The double surface transmittance of the cover plate is actually affected by both the film surface and the non-film surface of the cover plate, and after being attached to the liquid crystal display screen, the cover plate surface transmittance T CG is actually only affected by the film surface of the cover plate.

[0060] The cover plate of Comparative Example 1 has almost no absorption, and the cover plate surface transmittance T CG can be obtained by subtracting the single surface reflectivity from 100%, and the influence of the non-film surface on the cover plate surface transmittance can be obtained by further subtracting the double surface transmittance. Since the transparent substrates of Example 1, Example 2, and Comparative Example 1 are the same, the influence of the non-film surface on the cover plate surface transmittance should also be the same, so the cover plate surface transmittance T CG of Example 1 and Example 2 can be calculated as follows:

[0061] Cover plate surface transmittance T CG = double surface transmittance of the cover plate + (100% - single surface reflectivity of the cover plate of Comparative Example 1 - double surface transmittance of the cover plate of Comparative Example 1)

[0062] The single surface reflectivity and double surface transmittance of the film surface of the cover plate of Example 1, Example 2, and Comparative Example 1 are measured, as shown in Table 1.

[0063] Table 1 Cover plate transmittance and single side reflectance of coated surface

[0064]

[0065] The corresponding data after the measurement of Comparative Example 1 and the liquid crystal display screen 1 with the cover plate adhered thereto having a comprehensive reflectance of about 0.5% and the liquid crystal display screen 2 with the cover plate adhered thereto having a comprehensive reflectance of about 1% are shown in Table 2.

[0066] Table 2 Screen reflectance after the cover plate of Comparative Example 1 is adhered thereto

[0067]

[0068] According to the data in Table 1, the average single side reflectance of the cover plate of Comparative Example 1 is 0.2275%, the average double side transmittance of the cover plate of Comparative Example 1 is 95.645%, and the surface transmittance T of the cover plate of Comparative Example 1 can be calculated as about 99.7725%, and the influence of the non-coated surface on the surface transmittance of the cover plate is about 4.1275%. CG1

[0069] According to the data in Table 2, the average reflectance of the screen 1 and the screen 2 obtained by adhering the cover plate of Comparative Example 1 to the liquid crystal display screen 1 and the liquid crystal display screen 2 is 0.7625% and 1.2763% respectively, and the comprehensive reflectance of the adhering surface of the liquid crystal display screen 1 and the liquid crystal display screen 2 can be calculated as about 0.5374% and 1.0535% respectively according to the screen reflectance calculation formula.

[0070] The single side reflectance and the reflective color of the cover plate during the adjustment of Example 1 and Example 2 are targeted at Comparative Example 1 with a mature existing process. If the single side transmittance of the cover plate of the examples can be as low as 0.2275%, then according to the contrast calculation formula, the screen contrast can take the maximum value only when the surface transmittance T of the cover plate is

[0071] The single side reflectance and the double side transmittance of the coated surface of the cover plate obtained in Example 1 and Example 2 are close to the target values.

[0072] The contrast data under a specific light environment after the measurement and calculation of the adhesion of each cover plate to the liquid crystal display screen 1 and the liquid crystal display screen 2 are shown in Table 3.

[0073] Table 3 Contrast data

[0074]

[0075] ​​As can be seen from the screen brightness data in Table 3, compared with Comparative Example 1, the screen reflection intensity of Example 1 and Example 2 is further reduced after being attached to different liquid crystal display screens. For liquid crystal display screen 1, the screen contrast after being attached to different cover plates decreases in the order of Example 1, Example 2 and Comparative Example 1. For liquid crystal display screen 2, the screen contrast after being attached to different cover plates decreases in the order of Example 2, Example 1 and Comparative Example 1.

[0076] According to the above data, adding the light-absorbing film layer and adjusting the film system to make the cover plate have appropriate transmittance and single-side reflectance of the coated surface can effectively improve the contrast of the screen under irradiation of different intensity ambient light, and the screen reflection intensity is also weakened, which not only increases the clarity and readability of the screen display content, but also reduces the possibility of causing glare to some extent.

[0077] The LAB color data of the viewing window area (VA area) and the ink area (BM area) when the screen is off were measured and the color difference was calculated. Similarly, since the liquid crystal display screen is attached with a polarizing sheet, the color data of the same point is measured orthogonally twice after being attached to the screen and the average value is recorded as the color data of the point, as shown in Table 4.

[0078] Table 4 Color difference data of the viewing window area and the ink area

[0079]

[0080] According to the above data, adding the light-absorbing film layer makes the color difference between the VA area and the BM area when the screen is off smaller, greatly reducing the difficulty of adjusting the ink to keep the color of the viewing window area and the ink area consistent when the screen is off.

[0081] The surface resistance of different cover plates was measured using an insulation resistance tester TH2683A, as shown in Table 5.

[0082] Table 5 Surface resistance of cover plates

[0083] 25V 50V 100V 200V Example 1 783.5 MΩ 631.3 MΩ 824.4 MΩ 642.6 MΩ Example 2 701.0 MΩ 780.3 MΩ 651.3 MΩ 817.1 MΩ Comparative Example 1 1.549 TΩ 1.693 TΩ 4.872 TΩ 5.741 TΩ

[0084] According to the above data, adding the diamond-like film with low resistivity in the film system makes the surface resistance of the cover plate decrease. Lower surface resistance is beneficial to charge release and prevents static electricity accumulation, which, together with other anti-static measures on the display, makes the liquid crystal display screen less susceptible to static electricity, so as to prevent some electronic components from being burned out or causing white screen or mura phenomenon.

[0085] The nano hardness of different materials (see Table 6) and different cover plate surfaces (see Table 7) was measured using a nano indenter Nano Indenter G200, and the test depth was 200 nm.

[0086] Table 6 Nano hardness of materials

[0087] SiO2 [Nb2O5] DLC Si3N4 Nano-hardness (Gpa) 8.4 7.8 20.2 19.6

[0088] Table 7 Cover plate surface nano-hardness

[0089] Example 1 Example 2 Comparative Example 1 DLC & Si3N4 thickness (nm) 109 98 0 Total thickness (nm) 221 222.5 287 DLC & Si3N4 fraction 49.3％ 44.0％ 0％ Nano-hardness (Gpa) 10.8 10.3 8.2

[0090] By comparing the above data, it can be seen that the addition of the diamond-like film layer and the Si3N4 film layer with higher hardness in the film system and the certain thickness and proportion make the hardness of the cover plate increase, and the screen surface is more resistant to scratching.

[0091] In summary, the cover plate has high contrast anti-glare effect, can make the screen display content more clear, and the screen is not easy to be affected by static electricity and is more resistant to scratching.

[0092] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable the personnel familiar with the technology to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application. Any equivalent transformation or modification according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. High contrast anti-glare integrated black cover plate, characterized in that, The application relates to a transparent substrate, a light-absorbing anti-reflection layer deposited on the film-coating surface of the transparent substrate, and an anti-fingerprint layer deposited on the surface of the light-absorbing anti-reflection layer. The light-absorbing anti-reflection layer comprises at least two low-refractive index film layers, at least one light-absorbing film layer group and at least one high-refractive index film layer, wherein the at least two low-refractive index film layers are arranged as a bottom layer close to the film-coating surface of the transparent substrate and a surface layer away from the transparent substrate, the light-absorbing film layer group comprises a light-absorbing film layer and two transition film layers arranged on both sides of the light-absorbing film layer, and the high-refractive index film layer is arranged between the low-refractive index film layer and the light-absorbing film layer group. The anti-fingerprint layer is arranged on the surface of the light-absorbing anti-reflection layer. The light-absorbing film layer is a diamond-like carbon film layer, and the transition film layer is a Si3N4 film layer.

2. The high contrast anti-glare integrated black cover plate of claim 1, wherein: The refractive index of the low-refractive index film layer is 1.3-1.5, the refractive index of the high-refractive index film layer is 2.2-2.4, the refractive index of the transition film layer is 1.9-2.1, and the refractive index of the light-absorbing film layer is 2.2-2.

4.

3. The high contrast anti-glare integrated black cover plate of claim 2, wherein: The light-absorbing anti-reflection layer comprises SiO2 film layers, Nb2O5 film layers, Si3N4 film layers, diamond-like carbon film layers and Si3N4 film layers arranged in sequence from the side close to the transparent substrate to the side away from the transparent substrate.

4. The high contrast anti-glare integrated black cover plate of claim 2, wherein: The thickness of each of the SiO2 film layers, the Nb2O5 film layers, the Si3N4 film layers, the diamond-like carbon film layers and the Si3N4 film layers is 20-30 nm, 10-60 nm, 20-90 nm, 10-70 nm, 5-25 nm and 40-90 nm respectively.

5. The high contrast anti-glare integrated black cover plate of claim 4, wherein: The transparent substrate is a tempered glass with a thickness of 40-100 mu m.

6. The high contrast anti-glare integrated black cover plate of claim 1, wherein: The thickness of the anti-fingerprint layer is 2-10 nm.

7. The high contrast anti-glare integrated black cover plate of claim 1, wherein: ​

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