Touch screen with anti-reflection function

Abstract

The utility model discloses an anti-reflection touch screen which comprises a glass cover plate layer, an optical film layer and a touch sensing layer, and the glass cover plate layer is provided with an upper surface and a lower surface in the thickness direction of the glass cover plate layer; the optical film layer is arranged on the upper surface of the glass cover plate layer; the touch sensing layer is arranged on the lower surface of the glass cover plate layer; wherein the optical film layer comprises a light-transmitting dielectric film layer, and a light trapping microstructure is arranged on the surface of one side, far away from the glass cover plate layer, of the light-transmitting dielectric film layer. The touch screen has an anti-reflection function.

Description

TECHNICAL FIELD

[0001] The utility model relates to touch technology especially, relate to a kind of touch screen with anti-reflection. BACKGROUND

[0002] Touch screen is a revolutionary interactive technology, which allows users to operate electronic devices by directly touching icons, buttons or swiping gestures on the screen, without physical keys or mouse. In portable electronic devices such as mobile phones and tablets, touch screen is widely used and crucial.

[0003] In the field of mobile phones, touch screen not only simplifies the user interface, but also greatly improves the convenience of operation. Users can easily make calls, send messages, browse the web or play games with their fingertips, enjoying intuitive and smooth interaction. On tablets, touch screen technology further enhances the multimedia capabilities of the device, allowing precise and delicate control for reading e-books, watching videos, or creating art.

[0004] However, the surface reflectivity of existing touch screens is high, and in strong light environment, it will reflect a large amount of ambient light, causing glare problem, which not only affects the display quality, but also easily causes eye fatigue. SUMMARY

[0005] To solve the above problems of the prior art, the utility model provides a touch screen with anti-reflection function.

[0006] The technical problem to be solved by the utility model is solved by the following technical scheme:

[0007] A touch screen with anti-reflection function, comprising a glass cover plate layer, an optical film layer and a touch sensing layer,

[0008] The glass cover plate layer has an upper surface and a lower surface along its thickness direction;

[0009] The optical film layer is arranged on the upper surface of the glass cover plate layer;

[0010] The touch sensing layer is arranged on the lower surface of the glass cover plate layer;

[0011] The optical film layer comprises a light-transmitting medium film layer, and the light-transmitting medium film layer has a light-trapping microstructure on its side surface away from the glass cover plate layer.

[0012] Further, the light-trapping microstructure comprises a plurality of columns and a plurality of grooves, each column and each groove are alternately distributed, and the width of each column gradually increases from bottom to top along the thickness direction of the glass cover plate layer, so that the width of each groove gradually decreases from bottom to top along the thickness direction of the glass cover plate layer.

[0013] Further, the height of each column and each groove is between 20-150nm, and the width of each column and each groove is between 500-1500nm.

[0014] Further, the thickness of the light-transmitting medium film layer is between 50-200nm.

[0015] Further, the light-transmitting medium film layer is a high-hardness corrosion-resistant film layer.

[0016] Further, the light-transmitting medium film layer is an oxidation tan film layer.

[0017] Further, the optical film layer further comprises at least one high-refractive-index film layer and at least one low-refractive-index film layer, which are alternately arranged on the side surface of the light-transmitting medium film layer facing the glass cover plate layer.

[0018] Further, the high-refractive-index film layer is a titanium dioxide film layer with a thickness of 100-200nm, and the low-refractive-index film layer is a strontium fluoride film layer with a thickness of 50-100nm.

[0019] Further, the touch screen further comprises a high-adhesion film layer arranged between the glass cover plate layer and the optical film layer.

[0020] Further, the high-adhesion film layer is an oxidation tan film layer with a thickness of 50-100nm.

[0021] The touch screen has the following beneficial effects: the touch screen of the utility model has the optical film layer with the light-transmitting medium film layer arranged on the upper surface of the glass cover plate, and the light-trapping microstructure is formed on the upper surface of the light-transmitting medium film layer, so that the incident ambient light is locked by the light-trapping microstructure and cannot be reflected out, thereby reducing the surface reflectivity and improving the display quality. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The utility model provides a touch screen's stacking structure schematic diagram.

[0023] Figure 2 The utility model provides another touch screen's stacking structure schematic diagram. DETAILED DESCRIPTION

[0024] The utility model will be described in detail below in combination with the drawings and examples, the examples of the examples are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar function throughout. The examples described below by reference to the drawings are exemplary and are intended to explain the utility model and cannot be understood as limiting the utility model.

[0025] In the description of the utility model, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as limiting the utility model.

[0026] In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0027] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] Example one

[0029] As Figure 1 shown, a touch screen with anti-reflection, comprising a glass cover plate layer 1, an optical film layer 2 and a touch sensing layer 3,

[0030] The glass cover plate layer 1 has an upper surface and a lower surface along the thickness direction of itself;

[0031] The optical film layer 2 is arranged on the upper surface of the glass cover plate layer 1;

[0032] The touch sensing layer 3 is arranged on the lower surface of the glass cover plate layer 1;

[0033] The optical film layer 2 comprises a light-transmitting medium film layer 21, and the light-transmitting medium film layer 21 is provided with light-trapping microstructures 211 on a side surface away from the glass cover plate layer 1.

[0034] The touch screen of the utility model is provided with the optical film layer 2 with the light-transmitting medium film layer 21 on the upper surface of the glass cover plate, and the light-trapping microstructures 211 are formed on the upper surface of the light-transmitting medium film layer 21, so that the ambient light is locked by the light-trapping microstructures 211 and cannot be reflected out, thereby reducing the surface reflectivity and improving the transmittance and display quality.

[0035] Specifically, the light-trapping microstructures 211 comprise a plurality of column bodies 21a and a plurality of groove bodies 21b, each column body 21a and each groove body 21b are alternately distributed in sequence, and the width of each column body 21a gradually increases from bottom to top along the thickness direction of the glass cover plate layer 1, so that the width of each groove body 21b gradually decreases from bottom to top along the thickness direction of the glass cover plate layer 1.

[0036] When the ambient light passes through the light-transmitting medium layer, part of the ambient light is incident into the groove body 21b of the light-trapping microstructure 211, and multiple reflections occur at the interface between the groove body 21b and the column body 21a, at this time, due to the smaller upper slot of the groove body 21b and the larger lower slot body, only a small amount of ambient light can be emitted from the upper slot after multiple reflections in the groove body 21b, and a large amount of ambient light is emitted from the lower slot body after multiple reflections in the groove body 21b, thereby reducing the reflectivity and improving the transmittance.

[0037] The light-trapping microstructures 211 can be formed on the surface of the light-transmitting medium film layer 21 by laser ablation, wet etching or texturing process, but are not limited thereto.

[0038] Preferably, the height of each column body 21a and each groove body 21b is between 20-150nm, and the width of each column body 21a and each groove body 21b is between 500-1500nm.

[0039] In this embodiment, the thickness of the light-transmitting medium film layer 21 is between 50-200nm. Of course, the thickness of the light-transmitting medium film layer 21 is not limited to the above range, and those skilled in the art can adjust it according to the actual use requirements, as long as the thickness of the light-transmitting medium film layer 21 is greater than the height of each column body 21a and each groove body 21b in the light-trapping microstructure 211.

[0040] Preferably, the light-transmitting medium film layer 21 is a high-hard corrosion-resistant film layer to improve the wear resistance and corrosion resistance of the surface of the touch screen.

[0041] In this embodiment, the light-transmitting medium film layer 21 is an oxide film layer.

[0042] Embodiment Two

[0043] As an optimization scheme of Embodiment One, in the present embodiment, as shown in Figure 1 the optical film layer 2 further comprises at least one high refractive index film layer 22 and at least one low refractive index film layer 23, which are arranged alternately on the side surface of the light-transmitting medium film layer 21 towards the glass cover plate layer 1.

[0044] The touch screen of the present utility model sets the high refractive index film layer 22 and the low refractive index film layer 23 alternately on the lower surface of the light-transmitting medium film layer 21, so that the optical film layer 2 cooperates with the high refractive index film layer 22 and the low refractive index film layer 23 to form an optical film layer 2 with light coherence structure, to make the reflected light cancel each other by using the light coherence structure of the optical film layer 2, to further reduce the surface reflectivity, improve the transmittance and display quality.

[0045] When the refractive index of the light-transmitting medium film layer 21 is higher than that of the low refractive index film layer 23, the low refractive index film layer 23 is located between the high refractive index film layer 22 and the light-transmitting medium film layer 21, and when the refractive index of the light-transmitting medium film layer 21 is lower than that of the low refractive index film layer 23, the high refractive index film layer 22 is located between the low refractive index film layer 23 and the light-transmitting medium film layer 21.

[0046] In the present embodiment, the high refractive index film layer 22 and the low refractive index film layer 23 are each only one layer.

[0047] Preferably, the high refractive index film layer 22 is a titanium dioxide film layer with a thickness of 100-200 nm, and the low refractive index film layer 23 is a strontium fluoride film layer with a thickness of 50-100 nm.

[0048] Embodiment Three

[0049] As an optimization scheme of Embodiment One or Embodiment Two, in the present embodiment, as shown in Figure 2 the touch screen further comprises a high adhesion film layer 4, which is arranged between the glass cover plate layer 1 and the optical film layer 2.

[0050] The high adhesion film layer 4 can utilize its high viscosity to improve its adhesion to the glass cover plate layer 1 and improve the adhesion of the optical film layer 2 thereon, thereby improving the adhesion between the glass cover plate layer 1 and the optical film layer 2, to reduce the risk of falling off of the optical film layer 2.

[0051] In the present embodiment, the high adhesion film layer 4 is an oxidized tantalum film layer with a thickness of 50-100 nm.

[0052] The oxidation tantalum film layer not only has high adhesion, but also has high hardness and high corrosion resistance, and can improve the wear resistance and corrosion resistance of the surface of the glass cover plate layer 1.

[0053] Preferably, the oxidation tantalum film layer is formed on the surface of the glass cover plate layer 1 by a process such as magnetron sputtering, vacuum evaporation or chemical vapor deposition, which can greatly improve the adhesion of the oxidation tantalum film layer.

[0054] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the embodiments of the present application, but not to limit them. Although the embodiments of the present application have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the embodiments of the present application can still be modified or replaced by equivalents, and these modifications or replacements cannot make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A touch screen having anti-reflection, characterized by, The touch screen comprises a glass cover plate layer, an optical film layer and a touch sensing layer, The glass cover plate layer has an upper surface and a lower surface along a thickness direction of the glass cover plate layer; The optical film layer is arranged on the upper surface of the glass cover plate layer; The touch sensing layer is arranged on the lower surface of the glass cover plate layer; The optical film layer comprises a light-transmitting medium film layer, and the light-transmitting medium film layer has light-trapping microstructures on a side surface away from the glass cover plate layer.

2. The touch screen of claim 1, wherein, The light-trapping microstructures comprise a plurality of columns and a plurality of grooves, each column and each groove are alternately arranged in sequence, and the width of each column gradually increases from bottom to top along the thickness direction of the glass cover plate layer, so that the width of each groove gradually decreases from bottom to top along the thickness direction of the glass cover plate layer.

3. The touch screen of claim 2, wherein, The height of each column and each groove is between 20-150 nm, and the width of each column and each groove is between 500-1500 nm.

4. The touch screen of any of claims 1-3, wherein, The thickness of the light-transmitting medium film layer is between 50-200 nm.

5. The touch screen of claim 1, wherein, The light-transmitting medium film layer is a high-hardness and corrosion-resistant film layer.

6. The touch screen of claim 5, wherein, The light-transmitting medium film layer is an oxide film layer.

7. The touch screen of claim 1, wherein, The optical film layer further comprises at least one high-refractive-index film layer and at least one low-refractive-index film layer, which are alternately arranged on a side surface of the light-transmitting medium film layer facing the glass cover plate layer.

8. The touch screen of claim 7, wherein, The high-refractive-index film layer is a titanium dioxide film layer with a thickness of 100-200 nm, and the low-refractive-index film layer is a strontium fluoride film layer with a thickness of 50-100 nm.

9. The touch screen of claim 1, wherein, The touch screen further comprises a high-adhesion film layer arranged between the glass cover plate layer and the optical film layer.

10. The touch screen of claim 9, wherein, The high-adhesion film layer is an oxide film layer with a thickness of 50-100 nm.

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