Protective cover plate with hydrophobic and oleophobic layer and touch screen

Abstract

The utility model discloses a protective cover plate with a hydrophobic and oleophobic layer, which comprises a glass cover plate provided with a first surface and a second surface which are oppositely arranged along the thickness direction of the glass cover plate; the hydrophobic and oleophobic film layer is arranged on the first surface of the glass cover plate; wherein the hydrophobic and oleophobic film layer comprises a plurality of hydrophobic areas and a plurality of oleophobic areas, and the hydrophobic areas and the oleophobic areas are sequentially and alternately distributed on the first surface of the glass cover plate. The protective cover plate has hydrophobicity and oleophobicity at the same time, the process is simple, and the material cost is low. The utility model further discloses a touch screen which comprises the protective cover plate.

Description

Technical Field

[0001] This utility model relates to cover plate technology, and more particularly to a protective cover plate with a hydrophobic and oleophobic layer and a touch screen. Background Technology

[0002] During daily use, the touchscreens of smartphones, tablets, and other electronic products easily accumulate fingerprints, sebum, and other dirt, severely impacting the user experience. To address this issue, the industry's main solution is to apply a fluoride layer to the touchscreen surface. However, the surface energy of the fluoride film remains relatively high (approximately 13-15 mN / m), failing to completely resolve the problem of electronic products being susceptible to dirt.

[0003] To address the aforementioned technical problems, existing technologies attempt to apply a polymer film layer with both hydrophobic and oleophobic properties to the surface of a touchscreen, thereby simultaneously meeting the requirements for easy cleaning and stain resistance. For example, Chinese Patent Application No. CN201710830716.8 discloses an oil-resistant and antibacterial cover glass for a touchscreen, comprising an ultra-thin glass sheet and an oil-resistant and antibacterial film formed by spraying an oil-resistant and antibacterial coating liquid onto the ultra-thin glass sheet and curing it. The oil-resistant and antibacterial coating liquid uses ethanol as the main solvent and disperses hydrophobic and oleophobic nanoparticles and antibacterial nanoparticles. The hydrophobic and oleophobic nanoparticles are a core-shell structure consisting of titanium dioxide loaded on carbon nanotubes as the core and hydrophobic and oleophobic modified silica as the porous outer shell. The antibacterial nanoparticles are prepared by coating silver-containing nanoparticles with β-cyclodextrin.

[0004] However, polymer films that are both hydrophobic and oleophobic are generally formed by modifying hydrophobic films to improve their oleophobic properties, or by modifying oleophobic films to improve their hydrophobic properties. These processes are complex and the materials are expensive, making them difficult to popularize. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides a protective cover that is both hydrophobic and oleophobic, and is simple to manufacture and has low material costs.

[0006] This utility model also provides a touch screen, including the aforementioned protective cover.

[0007] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0008] A protective cover with a hydrophobic and oleophobic layer includes:

[0009] The glass cover plate has a first surface and a second surface that are disposed opposite to each other along its own thickness direction;

[0010] A hydrophobic and oleophobic film layer is disposed on the first surface of the glass cover plate;

[0011] The hydrophobic and oleophobic film layer includes multiple hydrophobic regions and multiple oleophobic regions, which are alternately distributed on the first surface of the glass cover.

[0012] Furthermore, the hydrophobic regions and the oleophobic regions are alternately distributed along a first direction on the first surface of the glass cover.

[0013] Furthermore, the hydrophobic and oleophobic regions are alternately distributed along the second direction on the first surface of the glass cover.

[0014] Furthermore, the first width of each hydrophobic region and each oleophobic region along the first direction or the second width along the second direction is between 50 and 500 μm.

[0015] Furthermore, the first direction is perpendicular to the second direction.

[0016] Furthermore, the thickness of the hydrophobic and oleophobic film layer is between 7 and 8 μm.

[0017] Furthermore, the hydrophobic region is a polyhexafluoropropylene film layer, and the oleophobic region is an organosilane film layer.

[0018] Furthermore, the protective cover also includes a silica intermediate film layer, which is disposed between the glass cover and the hydrophobic and oleophobic film layer.

[0019] Furthermore, the protective cover also includes an aluminum nitride bottom film layer, which is disposed between the glass cover and the silicon dioxide intermediate film layer.

[0020] A touch screen includes a touch function layer and the aforementioned protective cover, wherein the touch function layer is disposed on the second surface of the glass cover of the protective cover.

[0021] The present invention has the following beneficial effects: The protective cover plate of the present invention forms the hydrophobic and oleophobic film layer on the first surface of the glass cover plate by a plurality of hydrophobic areas and a plurality of oleophobic areas that are alternately distributed in sequence, so that the surface has both hydrophobic and oleophobic properties. The hydrophobic areas and oleophobic areas can be formed by conventional hydrophobic materials and oleophobic materials respectively, without the need for complex modification treatment of conventional hydrophobic materials or oleophobic materials. The process is simple and the material cost is low. Attached Figure Description

[0022] Figure 1 A schematic diagram of the stacking structure of the protective cover plate provided by this utility model.

[0023] Figure 2 A schematic diagram of the planar structure of the hydrophobic and oleophobic film layer in the protective cover plate provided by this utility model.

[0024] Figure 3 A schematic diagram of the planar structure of another hydrophobic and oleophobic film layer in the protective cover plate provided by this utility model.

[0025] Figure 4 A schematic diagram of the planar structure of another hydrophobic and oleophobic film layer in the protective cover plate provided by this utility model.

[0026] Figure 5 A schematic diagram of the stacking structure of another protective cover plate provided by this utility model.

[0027] Figure 6 A schematic diagram of the stacking structure of another protective cover plate provided by this utility model.

[0028] Figure 7 A schematic diagram of the stacked structure of the touch screen provided by this utility model. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings. Throughout the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Example 1

[0034] like Figure 1 As shown, a protective cover with a hydrophobic and oleophobic layer includes:

[0035] The glass cover plate 21 has a first surface and a second surface that are disposed opposite to each other along its own thickness direction;

[0036] A hydrophobic and oleophobic film layer 22 is disposed on the first surface of the glass cover plate 21;

[0037] The hydrophobic and oleophobic film layer 22 includes multiple hydrophobic regions 221 and multiple oleophobic regions 222, and the hydrophobic regions 221 and the oleophobic regions 222 are alternately distributed on the first surface of the glass cover plate 21.

[0038] The protective cover of this invention forms a hydrophobic and oleophobic film layer 22 on the first surface of the glass cover 21 by a plurality of alternating hydrophobic regions 221 and a plurality of oleophobic regions 222, so that the surface has both hydrophobic and oleophobic properties. The hydrophobic regions 221 and oleophobic regions 222 can be made of conventional hydrophobic materials and oleophobic materials, respectively, without the need for complex modification of conventional hydrophobic or oleophobic materials. The process is simple and the material cost is low.

[0039] In fabricating the hydrophobic and oleophobic film layer 22, a first mask is first used to partially block the first surface of the glass cover plate 21. Then, through the first mask, a hydrophobic or oleophobic material is sputtered or sprayed onto the unblocked area of ​​the first surface of the glass cover plate 21 to form the hydrophobic area 221 or the oleophobic area 222. Then, a second mask is used to partially block the first surface of the glass cover plate 21. Then, through the second mask, an oleophobic or hydrophobic material is sputtered or sprayed onto the unblocked area of ​​the first surface of the glass cover plate 21 to form the oleophobic area 222 or the hydrophobic area 221. The blocked area and the cut-out area of ​​the first mask are opposite to those of the blocked area and the cut-out area of ​​the second mask.

[0040] The first surface of the glass cover plate 21 has a first direction and a second direction, preferably, the first direction is perpendicular to the second direction. In this embodiment, the length direction of the glass cover plate 21 is taken as the first direction, and the width direction of the glass cover plate 21 is taken as the second direction.

[0041] In some examples, such as Figure 2 As shown, each hydrophobic region 221 and each oleophobic region 222 are alternately distributed along a first direction on the first surface of the glass cover plate 21, and the first width of each hydrophobic region 221 and each oleophobic region 222 along the first direction is between 50-500 μm.

[0042] In some examples, such as Figure 3 As shown, each hydrophobic region 221 and each oleophobic region 222 are alternately distributed along the second direction on the first surface of the glass cover plate 21, and the second width of each hydrophobic region 221 and each oleophobic region 222 along the second direction is between 50-500 μm.

[0043] In some instances, such as Figure 4 As shown, each hydrophobic region 221 and each oleophobic region 222 are simultaneously and alternately distributed along the first direction and the second direction on the first surface of the glass cover plate 21, and the first width of each hydrophobic region 221 and each oleophobic region 222 along the first direction and the second width along the second direction are both between 50-500μm.

[0044] Preferably, the thickness of the hydrophobic and oleophobic film layer 22 may be, but is not limited to, between 7-8 μm, the hydrophobic region 221 may be, but is not limited to, a polyhexafluoropropylene film layer, and the oleophobic region 222 may be, but is not limited to, an organosilane film layer.

[0045] Example 2

[0046] As an optimization of Embodiment 1, in this embodiment, such as Figure 5 As shown, the protective cover also includes a silica intermediate film layer 23, which is disposed between the glass cover 21 and the hydrophobic and oleophobic film layer 22.

[0047] Silica has good optical transparency and hardness. In this embodiment, by setting the silica intermediate film layer 23 between the glass cover plate 21 and the hydrophobic and oleophobic film layer 22, the optical performance of the protective cover plate can be improved, such as increasing light transmittance and reducing reflectivity, while providing additional physical protection.

[0048] Preferably, the thickness of the silicon dioxide intermediate film layer 23 may be, but is not limited to, between 200-250 nm. It is formed on the first surface of the glass cover plate 21 by means of magnetron sputtering, vacuum evaporation or vapor deposition, and then the hydrophobic and oleophobic film layer 22 is formed on the surface of the silicon dioxide intermediate film layer 23.

[0049] Example 3

[0050] As an optimization of Embodiment 2, in this embodiment, such as Figure 6 As shown, the protective cover also includes an aluminum nitride bottom film layer 24, which is disposed between the glass cover 21 and the silicon dioxide intermediate film layer 23.

[0051] Aluminum nitride has excellent thermal and chemical stability. In this embodiment, by setting the aluminum nitride bottom film layer 24 between the glass cover plate 21 and the silicon dioxide intermediate film layer 23, it can effectively resist high temperature and chemical corrosion, and improve the high temperature resistance and corrosion resistance of the protective cover plate.

[0052] Preferably, the thickness of the aluminum nitride base film layer 24 can be, but is not limited to, between 50-100 nm. It is formed on the first surface of the glass cover plate 21 by means of magnetron sputtering, vacuum evaporation or vapor deposition, then the silicon dioxide intermediate film layer 23 is formed on the surface of the aluminum nitride base film layer 24, and finally the hydrophobic and oleophobic film layer 22 is formed on the surface of the silicon dioxide intermediate film layer 23.

[0053] Example 4

[0054] like Figure 7 As shown, a touch screen includes a touch function layer 1 and a protective cover plate 2 as described in Embodiment 1, Embodiment 2 or Embodiment 3, wherein the touch function layer 1 is disposed on the second surface of the glass cover plate 21 of the protective cover plate 2.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present utility model, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the present utility model.

Claims

1. A protective cover plate with a hydrophobic and oleophobic layer, characterized in that, include: The glass cover plate has a first surface and a second surface that are disposed opposite to each other along its own thickness direction; A hydrophobic and oleophobic film layer is disposed on the first surface of the glass cover plate; The hydrophobic and oleophobic film layer includes multiple hydrophobic regions and multiple oleophobic regions, and the hydrophobic regions and the oleophobic regions are alternately distributed on the first surface of the glass cover plate. The protective cover also includes a silica intermediate film layer and an aluminum nitride bottom film layer. The silica intermediate film layer is disposed between the glass cover and the hydrophobic and oleophobic film layer, and the aluminum nitride bottom film layer is disposed between the glass cover and the silica intermediate film layer.

2. The protective cover plate according to claim 1, characterized in that, The hydrophobic and oleophobic regions are alternately distributed along a first direction on the first surface of the glass cover.

3. The protective cover plate according to claim 2, characterized in that, The hydrophobic and oleophobic regions are alternately distributed along the second direction on the first surface of the glass cover.

4. The protective cover plate according to claim 3, characterized in that, The first width of each hydrophobic region and each oleophobic region along the first direction or the second width along the second direction is between 50 and 500 μm.

5. The protective cover plate according to claim 3, characterized in that, The first direction is perpendicular to the second direction.

6. The protective cover plate according to claim 1, characterized in that, The thickness of the hydrophobic and oleophobic film is between 7 and 8 μm.

7. The protective cover plate according to claim 1, characterized in that, The hydrophobic region is a polyhexafluoropropylene film layer, and the oleophobic region is an organosilane film layer.

8. A touchscreen, characterized in that, It includes a touch-sensitive layer and the protective cover as described in claim 1, wherein the touch-sensitive layer is disposed on the second surface of the glass cover of the protective cover.

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