CN212966140U

CN212966140U - Water-mist-proof capacitive touch screen

Info

Publication number: CN212966140U
Application number: CN202022038061.0U
Authority: CN
Inventors: 曾胜; 刘德昌; 邓杰
Original assignee: Guangdong Qudian Intelligent Technology Co ltd
Current assignee: Guangdong Qudian Intelligent Technology Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-04-13
Anticipated expiration: 2030-09-16

Abstract

The utility model relates to the technical field of touch screens, and discloses a capacitive touch screen capable of preventing water mist, which comprises a rigid layer, an adhesive layer, a conductive layer and a hydrophobic layer; the hard layer, the bonding layer, the conductive layer and the hydrophobic layer are sequentially stacked, and the conductive layer is bonded on the hard layer through the bonding layer; the hydrophobic layer is attached to the conductive layer. The hard layer has the characteristic of high hardness, and can prevent the capacitive touch screen from being scratched by a user or a sharp tool, so that the capacitive touch screen has good light transmittance and visual effect; the hydrophobic layer is attached to the conducting layer, the water contact angle of the hydrophobic layer is larger than 110 degrees, and the hydrophobic layer has obvious static hydrophobicity, so that water vapor in the air is difficult to condense water mist on the conducting layer, and the light transmittance and the visual effect of the capacitive touch screen are further ensured.

Description

Water-mist-proof capacitive touch screen

Technical Field

The utility model relates to a touch-sensitive screen technical field especially relates to a capacitive touch screen of waterproof fog.

Background

At present, capacitive touch screens in the market are divided according to conductive materials (conductive films or conductive glass) and panel materials (toughened glass panels or PET panels or PMMA panels), and comprise a structure of G (toughened glass panels) + G (conductive glass), which is abbreviated as GG; g (toughened glass panel) + F (conductive film), GF structure for short; g (toughened glass panel) + F (conducting film), GFF structure for short; p (PET panel or PMMA panel) + G (conductive glass), PG structure for short. Because the capacitive touch screen with the G + G structure has the characteristics of hardness, difficulty in scratching, strong corrosion resistance and high light transmittance, the use popularization rate is high.

However, in autumn and winter, the electronic product with the capacitive touch screen inevitably transfers the indoor high-temperature environment to the outdoor low-temperature environment in the using process, the low-temperature cold air is liquefied into water vapor when meeting cold and water mist is condensed on the back of the capacitive touch screen, the water mist greatly influences the light transmittance and the visual effect of the capacitive touch screen, and the use comfort of a user is reduced to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a capacitive touch screen of waterproof fog, it prevents that steam from condensing water smoke on capacitive touch screen, ensures capacitive touch screen's luminousness and visual effect.

In order to achieve the above object, the present invention provides a capacitive touch screen capable of preventing water mist, which includes a hard layer, an adhesive layer, a conductive layer, and a hydrophobic layer; the hard layer, the bonding layer, the conductive layer and the hydrophobic layer are sequentially stacked, and the conductive layer is bonded on the hard layer through the bonding layer; the hydrophobic layer is attached to the conductive layer.

As a preferred scheme, the hydrophobic layer comprises an installation glue layer, a PET film and a hydrophobic coating layer which are sequentially stacked, and the hydrophobic layer is attached to the conducting layer through the installation glue layer.

Preferably, the mounting adhesive layer is an optical adhesive layer.

Preferably, the thickness of the hydrophobic layer is 60 to 100 μm.

Preferably, the hard layer is a toughened glass layer.

Preferably, the thickness of the toughened glass layer is 0.35-5 mm.

Preferably, the adhesive layer is an optical adhesive layer.

Preferably, the conductive layer is a conductive glass layer.

Preferably, the thickness of the conductive glass layer is 0.35-1.8 mm.

Preferably, a PET protective film is disposed on the hard layer.

The embodiment of the utility model provides a capacitive touch screen of waterproof fog compares with prior art, and its beneficial effect lies in:

the utility model discloses capacitive touch screen is including the rigid layer, adhesive linkage, conducting layer and the hydrophobic layer that stack in proper order, and the conducting layer passes through the adhesive linkage and bonds on rigid layer, and the electric current that the user touched the touch point and produced when rigid layer is received by the conducting layer, and the electric current is along with the position of conducting layer transmission to the controller of electronic product in order to catch the touch point. The hard layer has the characteristic of high hardness, can prevent the capacitive touch screen from being scratched by a user or a sharp tool, and is favorable for the capacitive touch screen to have good light transmittance and visual effect; the hydrophobic layer is attached to the conducting layer, the water contact angle of the hydrophobic layer is larger than 110 degrees, and the hydrophobic layer has obvious static hydrophobicity, so that water vapor in the air is difficult to condense water mist on the conducting layer, and the light transmittance and the visual effect of the capacitive touch screen are further ensured.

Drawings

Fig. 1 is a schematic structural diagram of a capacitive touch screen according to an embodiment of the present invention;

in the figure, 1-hard layer; 2-an adhesive layer; 3-a conductive layer; 4-hydrophobic layer, 41-mounting adhesive layer, 42-PET film and 43-hydrophobic coating layer; 5-PET protective film.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, a capacitive touch screen according to a preferred embodiment of the present invention includes a rigid layer 1, an adhesive layer 2, a conductive layer 3, and a hydrophobic layer 4; the hard layer 1, the adhesive layer 2, the conductive layer 3 and the hydrophobic layer 4 are sequentially stacked, and the conductive layer 3 is adhered to the hard layer 1 through the adhesive layer 2; a hydrophobic layer 4 is attached to the conductive layer 3.

Based on the above structure, when a user touches the hard layer 1, a current generated by a touch point is received by the conductive layer 3, and the current flows to a controller of an electronic product along with the conductive layer 3 to capture the position of the touch point. The hard layer 1 has the characteristic of high hardness, can prevent the capacitive touch screen from being scratched by a user or a sharp tool, and is favorable for the capacitive touch screen to have good light transmittance and visual effect; the hydrophobic layer 4 is attached to the conducting layer 3, the water contact angle of the hydrophobic layer 4 is larger than 110 degrees, and the hydrophobic layer has obvious static hydrophobicity, so that water vapor in the air is difficult to condense water mist on the conducting layer 3, and the light transmittance and the visual effect of the capacitive touch screen are further ensured.

In some embodiments, the hydrophobic layer 4 includes a mounting adhesive layer 41, a PET film 42, and a hydrophobic paint layer 43, which are sequentially stacked, and the hydrophobic layer 4 is attached to the conductive layer 3 through the mounting adhesive layer 41. Preferably, in order to avoid the influence of the mounting adhesive layer 41 on the light transmittance and the visual effect of the capacitive touch screen, the mounting adhesive layer 41 is an optical adhesive layer, the optical adhesive has the characteristics of being colorless and transparent, having a light transmittance of more than 90%, having good adhesive strength, being curable at room temperature or at intermediate temperature, having small curing shrinkage, and the like, and effectively and firmly bonds the hydrophobic layer 4 and the conductive layer 3 together without influencing the light transmittance of the capacitive touch screen. It should be noted that the material of the mounting adhesive layer 41 is not limited in this embodiment, and the mounting adhesive layer 41 of the present invention may also be an adhesive such as silicone, acrylic resin, unsaturated polyester, polyurethane, or epoxy resin.

More specifically, the hydrophobic coating layer 43 is made of a hydrophobic coating, wherein the hydrophobic coating may be a synthetic polymer melt polymer (such as polyolefin, polycarbonate, polyamide, polyacrylonitrile, polyester, fluorine-free acrylate, molten paraffin, and the like) modified by a certain process technology to obtain hydrophobicity, or modified nano Si O2, and an internal structure of the modified nano Si O2 cannot form a hydrogen bond, so that water drops condensed by water vapor and the hydrophobic coating layer 43 repel each other to form a hydrophobic effect, thereby avoiding a water mist condensation phenomenon of the water vapor on the conductive layer 3, and effectively ensuring that the capacitive touch screen has good light transmittance and visual effect.

Preferably, in order to control the hydrophobic effect of the hydrophobic layer 4 and prevent the hydrophobic layer 4 from affecting the transmittance of the capacitive touch screen, the thickness of the hydrophobic layer 4 is 60 to 100 μm. Preferably, the thickness of the hydrophobic layer 4 of the present invention is 60/70/80 μm.

Further, the hard layer 1 is a tempered glass layer. Toughened glass has the advantage that impact strength is high, and the security is strong, can prevent effectively that capacitive touch screen from being by user or sharp ware fish tail, guarantees that capacitive touch screen has good luminousness and visual effect.

Preferably, in order to control the use cost of the toughened glass, the thickness of the toughened glass layer is 0.35-5 mm. The toughened glass thickness that is used for capacitive touch screen has 0.35/0.55/0.7/1.1/1.8/2/3/4/5mm now, in order to reduce the complexity of processing technology, the utility model discloses a toughened glass's thickness can adopt 0.7/1.1/1.8 mm.

Preferably, the adhesive layer 2 is an optical glue layer. The optical adhesive is colorless and transparent, has the light transmittance of more than 90 percent, has good bonding strength, can be cured at room temperature or middle temperature, has the characteristics of small curing shrinkage and the like, effectively and firmly bonds the hard layer 1 and the conductive layer 3 together, and does not influence the light transmittance of the capacitive touch screen.

Further, the conductive layer 3 is a conductive glass layer. A conductive film (ITO film) is plated on the surface (front and back) of common glass, so that the glass has conductive performance, and the conductive film is used for transmitting current generated by a touch point when the hard layer 1 is touched to a controller of an electronic product through the conductive layer 3 so as to capture the position of the touch point and finish transmission of the current inside the capacitive touch screen.

Preferably, the thickness of the conductive layer 3 is 0.35 to 1.8mmmm in order to control the cost of the conductive glass and ensure the conductive performance. Preferably, the thickness of the conductive layer 3 of the present invention is preferably 0.55/0.7 mm.

Further, a PET protective film 5 is provided on the hard layer 1. The light transmittance of the PET protective film 5 is over 90%, so that the surface of the capacitive touch screen has the functions of heat insulation and ultraviolet resistance while the light transmittance of the capacitive touch screen is not influenced, and the surface of the capacitive touch screen has a good protection effect on eyes. Preferably, the PET protective film 5 is attached to the hard layer 1 using an optical adhesive.

To sum up, the embodiment of the utility model provides a capacitive touch screen of waterproof fog, it is including the rigid layer 1, adhesive linkage 2, conducting layer 3 and the hydrophobic layer 4 that stack in proper order, and conducting layer 3 passes through adhesive linkage 2 and bonds on rigid layer 1, and the electric current that the user touch point produced when rigid layer 1 is received by conducting layer 3, and the electric current flows to the controller of electronic product along with conducting layer 3 in order to catch the position of touch point. The hard layer 1 has the characteristic of high hardness, can prevent the capacitive touch screen from being scratched by a user or a sharp tool, and is favorable for the capacitive touch screen to have good light transmittance and visual effect; the hydrophobic layer 4 is attached to the conducting layer 3, the water contact angle of the hydrophobic layer 4 is larger than 110 degrees, and the hydrophobic layer has obvious static hydrophobicity, so that water vapor in the air is difficult to condense water mist on the conducting layer 3, and the light transmittance and the visual effect of the capacitive touch screen are further ensured.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A capacitive touch screen capable of preventing water mist is characterized by comprising a hard layer, an adhesive layer, a conductive layer and a hydrophobic layer; the hard layer, the bonding layer, the conductive layer and the hydrophobic layer are sequentially stacked, and the conductive layer is bonded on the hard layer through the bonding layer; the hydrophobic layer is attached to the conductive layer.

2. The capacitive touch screen of claim 1, wherein the hydrophobic layer comprises a mounting adhesive layer, a PET film, and a hydrophobic coating layer, which are sequentially stacked, and the hydrophobic layer is attached to the conductive layer through the mounting adhesive layer.

3. The moisture and fog resistant capacitive touch screen of claim 2, wherein the mounting adhesive layer is an optical adhesive layer.

4. The capacitive touch screen according to any one of claims 1 to 3, wherein the hydrophobic layer has a thickness of 60 to 100 μm.

5. The capacitive touch screen of claim 1, wherein the rigid layer is a layer of tempered glass.

6. The capacitive touch screen of claim 5, wherein the thickness of the toughened glass layer is 0.35-5 mm.

7. The moisture and fog resistant capacitive touch screen of claim 1, wherein the adhesive layer is an optical glue layer.

8. The moisture and fog resistant capacitive touch screen of claim 1, wherein the conductive layer is a conductive glass layer.

9. The capacitive touch screen of claim 8, wherein the conductive glass layer has a thickness of 0.35 mm to 1.8 mm.

10. The capacitive touch screen of claim 1, wherein a PET protective film is disposed on the rigid layer.