Touch screen with high heat dissipation performance and high electrical insulation performance and touch display module

Abstract

The utility model discloses a touch screen with high heat dissipation and high electrical insulating property, which comprises a glass cover plate and a sensing array layer, and the sensing array layer is arranged on the surface of one side of the glass cover plate; the touch screen further comprises an electric insulation layer and a heat conduction and heat dissipation layer, the electric insulation layer is arranged on the surface of the side, away from the glass cover plate, of the sensing array layer, and the heat conduction and heat dissipation layer is arranged on the surface of the side, away from the sensing array layer, of the electric insulation layer. The touch screen has high heat dissipation performance and high electrical insulation performance. The utility model further discloses a touch display module which comprises the touch screen.

Description

TECHNICAL FIELD

[0001] The utility model relates to touch -sensitive screen field especially, touch -sensitive screen and touch display module with high heat dissipation and high electrical insulation are provided. BACKGROUND

[0002] Touch -sensitive screen is a kind of setting in screen, for detecting the touch position of user, and the touch position is converted into touch point coordinate, and is sent to controller, and the display content of screen is controlled according to touch point coordinate by controller, human-computer interaction device.Person-machine interface terminal has wide application scene, such as smart phone, tablet computer, intelligent education whiteboard, intelligent meeting whiteboard, ordering machine, vehicle-mounted touch screen, digital signage etc.

[0003] Since needing to sense the touch operation on any position, touch -sensitive screen has the sensor array that fills the entire screen, this can generate a large amount of heat when being powered on, and too high temperature can cause the slow of sensing speed, therefore, it is of great significance to improve the heat dissipation performance of touch -sensitive screen.Moreover, such a large number of sensors are distributed, which is easy to short with other electronic components inside the terminal, thereby affecting stability. SUMMARY

[0004] In order to solve the above technical problems, the utility model provides a kind of touch -sensitive screen, with high heat dissipation and high electrical insulation.

[0005] The utility model also provides a kind of touch display module, including above-mentioned touch -sensitive screen.

[0006] The technical problems to be solved by the utility model are realized by the following technical schemes:

[0007] A kind of touch -sensitive screen with high heat dissipation and high electrical insulation, including glass cover plate and sensing array layer, the sensing array layer is arranged on the side surface of the glass cover plate;The touch -sensitive screen further includes electrically insulating layer and heat-conducting heat-dissipating layer, the electrically insulating layer is arranged on the side surface of the sensing array layer away from the glass cover plate, and the heat-conducting heat-dissipating layer is arranged on the side surface of the electrically insulating layer away from the sensing array layer.

[0008] Further, the electrically insulating layer is beryllium oxide plating layer, and the thickness is 50-100nm.

[0009] Further, the heat-conducting heat-dissipating layer includes graphene heat-conducting layer and graphite heat-dissipating layer, and the graphite heat-dissipating layer surrounds on the periphery of the graphene heat-conducting layer.

[0010] Further, the glass cover plate includes visual area and frame area, and the frame area surrounds on the periphery of the visual area;The graphene heat-conducting layer corresponds to the visual area, and the graphite heat-dissipating layer corresponds to the frame area.

[0011] Further, the glass cover plate is provided with a light-shielding ink layer on a side surface close to the sensing array layer in the frame area.

[0012] Further, the touch screen further comprises a silicon dioxide coating layer, which is arranged on a side surface of the glass cover plate away from the sensing array layer.

[0013] Further, the touch screen further comprises a niobium nitride coating layer, which is arranged on a side surface of the silicon dioxide coating layer away from the glass cover plate.

[0014] Further, the touch screen further comprises a silicon carbide coating layer, which is arranged on a side surface of the niobium nitride coating layer away from the silicon dioxide coating layer.

[0015] A touch display module comprises a display screen and the above touch screen, and the display screen is arranged on the heat-conducting and heat-dissipating layer of the touch screen.

[0016] Further, the display screen is attached to the heat-conducting and heat-dissipating layer of the touch screen through a heat-conducting silica gel layer.

[0017] The touch screen of the utility model has the following beneficial effects: the touch screen of the utility model is provided with the electric insulating layer and the heat-conducting and heat-dissipating layer on a side surface of the sensing array layer away from the glass cover plate, the electric insulating layer and the heat-conducting and heat-dissipating layer are used for respectively improving the electric insulating property and the heat-dissipating property of the touch screen, the heat-conducting and heat-dissipating layer can quickly transfer the heat generated when the sensing array layer is electrified to the plane and radiate the heat outward, thereby improving the heat-dissipating efficiency, the electric insulating layer can electrically isolate the sensing array layer from the outside, thereby avoiding the short circuit between the sensing array layer and the electronic elements inside the display device and preventing the internal current of the electronic device from being transferred to the sensing array layer through the heat-conducting and heat-dissipating layer. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model provides a touch screen's laminated structure schematic diagram.

[0019] Figure 2 The utility model provides a touch screen's laminated structure schematic diagram.

[0020] Figure 3 The utility model provides a touch screen's laminated structure schematic diagram.

[0021] Figure 4 The utility model provides a touch screen's laminated structure schematic diagram.

[0022] Figure 5Another touch screen of the layered structure schematic diagram provided by the utility model.

[0023] Figure 6 The layered structure schematic diagram of the touch display module provided by the utility model. DETAILED DESCRIPTION

[0024] The utility model will be explained in detail below in combination with the drawings and examples, the examples of the example are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar function throughout. The examples described below by referring 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 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 the purpose of description, 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 be explicitly or implicitly included one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0027] In the utility model, unless otherwise specifically defined 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 1As shown in the figure, a kind of high heat dissipation and high electric insulation touch screen, including glass cover plate 1 and sensing array layer 2, the sensing array layer 2 is arranged on the side surface of the glass cover plate 1;The touch screen further includes electric insulation layer 3 and heat-conducting heat dissipation layer 4, the electric insulation layer 3 is arranged on the side surface of the sensing array layer 2 away from the glass cover plate 1, and the heat-conducting heat dissipation layer 4 is arranged on the side surface of the electric insulation layer 3 away from the sensing array layer 2.

[0030] The touch screen of the utility model sets the electric insulation layer 3 and heat-conducting heat dissipation layer 4 in order on the side surface of the sensing array layer 2 away from the glass cover plate 1, improves electric insulation and heat dissipation of itself respectively using the electric insulation layer 3 and heat-conducting heat dissipation layer 4, the heat-conducting heat dissipation layer 4 can quickly transfer the heat generated when the sensing array layer 2 is powered on to this plane, and radiate heat outward, improve heat dissipation efficiency, and the electric insulation layer 3 can isolate the sensing array layer 2 from the outside electrically, avoid the internal current of electronic equipment to be transferred to the sensing array layer 2 through the heat-conducting heat dissipation layer 4.

[0031] The electric insulation layer 3 and heat-conducting heat dissipation layer 4 are hollowed out on the binding position side of the sensing array layer 2 to expose the binding position of the sensing array layer 2 and the flexible circuit board 21 for binding.

[0032] Preferably, the electric insulation layer 3 is beryllium oxide plating layer, and the thickness is 50-100nm.

[0033] The beryllium oxide plating layer not only has good electric insulation, but also has high thermal conductivity, is deposited on the surface of the glass cover plate 1 to be used as the electric insulation layer 3, can not only avoid the internal current of electronic equipment to be transferred to the sensing array layer 2 through the heat-conducting heat dissipation layer 4, but also can quickly transfer the heat generated when the sensing array layer 2 is powered on to the heat-conducting heat dissipation layer 4, does not affect the heat conduction efficiency between the sensing array layer 2 and heat-conducting heat dissipation layer 4.

[0034] The beryllium oxide plating layer can be deposited on the surface of the glass substrate by means of magnetron sputtering, vacuum evaporation or vapor deposition, and the thickness of 50-100nm also makes it have sufficient light transmittance to meet the display requirement of display screen.

[0035] As shown in the figure, Figure 2 The heat-conducting heat dissipation layer 4 includes graphene heat-conducting layer 41 and graphite heat dissipation layer 42, and the graphite heat dissipation layer 42 surrounds the periphery of the graphene heat-conducting layer 41.

[0036] Graphene is considered to be the best heat transfer material to date. Its thermal conductivity can reach up to 5000W / mK, which is about 5 times that of diamond and 10 times that of copper. Graphene itself only absorbs about 2.3% of light and is almost completely transparent, thus not affecting the brightness and normal display of the display. Graphite, as a new thermal conductive and heat dissipation material, conducts heat evenly in two directions, shielding heat sources and components while improving the performance of consumer electronic products. However, because graphite is opaque and has a lower production cost than graphene, using graphene in combination with graphite on touch screens can both reduce costs and maintain excellent heat dissipation of the touch screen.

[0037] like Figure 3 and 4 The glass cover 1 includes a visible area 11 and a frame area 12 , and the frame area 12 surrounds the outer periphery of the visible area 11 ; the graphene thermal conductive layer 41 corresponds to the visible area 11 , and the graphite heat dissipation layer 42 corresponds to the frame area 12 .

[0038] In some examples, the graphite heat dissipation layer 42 directly serves as a light shielding layer on the frame area 12 of the glass cover plate 1 to define the visible area 11 of the glass cover plate 1, thereby facilitating the positioning and bonding of the touch screen and the display screen.

[0039] In some examples, considering that graphite is soft and loose, a light-shielding ink layer 13 is provided on one side of the glass cover plate 1 close to the sensor array layer 2 in the frame area 12 to improve the light-shielding effect of the frame area 12 and prevent light from leaking through the internal holes of the graphite heat dissipation layer 42.

[0040] The light-shielding ink layer 13 is a black ink layer, and its thickness is between 1-3 μm.

[0041] Preferably, Figure 5 As shown, the touch screen further includes a silicon dioxide coating 5, a niobium nitride coating 6, and a silicon carbide coating 7. The silicon dioxide coating 5 is disposed on a surface of the glass cover plate 1 away from the sensor array layer 2, the niobium nitride coating 6 is disposed on a surface of the silicon dioxide coating 5 away from the glass cover plate 1, and the silicon carbide coating 7 is disposed on a surface of the niobium nitride coating 6 away from the silicon dioxide coating 5.

[0042] Since the silicon dioxide coating 5 and the glass cover plate 1 are made of the same material, the molecules of the silicon dioxide coating 5 can fill the loose molecular gaps on the surface of the glass cover plate 1 during coating, thereby increasing the surface hardness of the glass cover plate 1 and improving the adhesion between the two.

[0043] The niobium nitride coating layer 6 has high hardness and good chemical stability, can further improve the surface hardness of the glass cover plate 1, and can resist the corrosion of various corrosive substances, and as an intermediate layer, can also improve the bonding force between the silicon dioxide coating layer 5 and the silicon carbide coating layer 7.

[0044] The silicon carbide coating layer 7 has extremely high hardness, thermal stability and chemical stability, plays a protective layer role of wear resistance and corrosion resistance, and can also provide excellent scratch resistance and reduce surface wear during daily use.

[0045] The silicon dioxide coating layer 5, the niobium nitride coating layer 6 and the silicon carbide coating layer 7 can be deposited on the surface of the glass substrate in sequence by a method such as magnetron sputtering, vacuum evaporation or vapor deposition, but are not limited thereto, wherein the thickness of the silicon dioxide coating layer 5 is 50-100nm, the thickness of the niobium nitride coating layer 6 is 100-150nm, and the thickness of the silicon carbide coating layer 7 is 100-200nm.

[0046] Example two

[0047] As shown in Figure 6 A touch display module, comprising a display screen 100 and the touch screen 200 of example one, the display screen 100 is arranged on the heat-conducting and heat-dissipating layer 4 of the touch screen 200.

[0048] The length and width dimensions of the display screen 100 are both smaller than those of the touch screen 200, so that the four sides of the touch screen 200 extend to the outside of the display screen 100, so that the graphite heat-dissipating layer 42 of the heat-conducting and heat-dissipating layer 4 can dissipate heat.

[0049] Preferably, the display screen 100 is attached to the heat-conducting and heat-dissipating layer 4 of the touch screen 200 through a heat-conducting silica gel layer 300, so that the heat generated by the display screen 100 can be quickly transmitted to the heat-conducting and heat-dissipating layer 4 through the heat-conducting silica gel layer 300, thereby improving the heat dissipation efficiency of the display screen 100 by using the heat dissipation structure of the touch screen 200.

[0050] 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, those skilled in the art should understand that the technical solutions of the embodiments of the present application can still be modified or replaced by equivalents, and these modifications or equivalent 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 with high heat dissipation and high electrical insulation, comprising a glass cover plate and a sensing array layer, the sensing array layer is arranged on one side surface of the glass cover plate; characterized in that, The touch screen further comprises an electrically insulating layer and a heat-conducting heat-dissipating layer, the electrically insulating layer is arranged on the side surface of the sensing array layer away from the glass cover plate, and the heat-conducting heat-dissipating layer is arranged on the side surface of the electrically insulating layer away from the sensing array layer.

2. The touch screen of claim 1, wherein, The electrically insulating layer is a beryllium oxide plating layer with a thickness of 50-100 nm.

3. The touch screen according to claim 1 or 2, characterized in that, The heat-conducting heat-dissipating layer comprises a graphene heat-conducting layer and a graphite heat-dissipating layer, and the graphite heat-dissipating layer is arranged around the periphery of the graphene heat-conducting layer.

4. The touch screen of claim 3, wherein, The glass cover plate comprises a visual area and a frame area, and the frame area is arranged around the periphery of the visual area; the graphene heat-conducting layer corresponds to the visual area, and the graphite heat-dissipating layer corresponds to the frame area.

5. The touch screen of claim 4, wherein, The side surface of the glass cover plate close to the sensing array layer is provided with a light-shielding ink layer in the frame area.

6. The touch screen of claim 1, wherein, The touch screen further comprises a silicon dioxide plating layer arranged on the side surface of the glass cover plate away from the sensing array layer.

7. The touch screen of claim 6, wherein, The touch screen further comprises a niobium nitride plating layer arranged on the side surface of the silicon dioxide plating layer away from the glass cover plate.

8. The touch screen of claim 7, wherein, The touch screen further comprises a silicon carbide plating layer arranged on the side surface of the niobium nitride plating layer away from the silicon dioxide plating layer.

9. A touch display module, characterized in that, The touch screen further comprises a silicon dioxide plating layer arranged on the side surface of the glass cover plate away from the sensing array layer. 10.The touch display module of claim 9, wherein, The touch screen further comprises a niobium nitride plating layer arranged on the side surface of the silicon dioxide plating layer away from the glass cover plate. The touch screen further comprises a silicon carbide plating layer arranged on the side surface of the niobium nitride plating layer away from the silicon dioxide plating layer. The touch screen further comprises a silicon dioxide plating layer arranged on the side surface of the glass cover plate away from the sensing array layer. The touch screen further comprises a niobium nitride plating layer arranged on the side surface of the silicon dioxide plating layer away from the glass cover plate. The touch screen further comprises a silicon carbide plating layer arranged on the side surface of the niobium nitride plating layer away from the silicon dioxide plating layer. The touch screen further comprises a silicon dioxide plating layer arranged on the side surface of the glass cover plate away from the sensing array layer. The touch screen further comprises a niobium nitride plating layer arranged on the side surface of the silicon dioxide plating layer away from the glass cover plate. The touch screen further comprises a silicon carbide plating layer arranged on the side surface of the niobium nitride plating layer away from the silicon dioxide plating layer. The touch screen further comprises a silicon dioxide plating layer arranged on the side surface of the glass cover plate away from the sensing array layer. The touch screen further comprises a niobium nitride plating layer arranged on the side surface of the silicon dioxide plating layer away from the glass cover plate. The touch screen further comprises a silicon carbide plating layer arranged on the side surface of the niobium nitride plating layer away from the silicon dioxide plating layer. The touch screen further comprises a silicon dioxide plating layer arranged on the side surface of the glass cover plate away from the sensing array layer. The touch screen further comprises a niobium nitride plating layer arranged on the side surface of the silicon dioxide plating layer away from the glass cover plate. The touch screen further comprises a silicon carbide plating layer arranged on the side surface of the niobium nitride plating layer away from the silicon dioxide plating layer. The touch screen further comprises a silicon dioxide plating layer arranged on the side surface of the glass cover plate away from the sensing array layer. The touch screen further comprises a niobium nitride plating layer arranged on the side surface of the silicon dioxide plating layer away from the glass cover plate. The touch screen further comprises a silicon carbide plating layer arranged on the side surface of the niobium nitride plating layer away from the silicon dioxide plating layer. The touch screen further comprises a silicon dioxide plating

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