Multifunctional touch module and touch display module thereof

Abstract

The utility model provides a multifunctional touch module and a touch display module thereof. The multifunctional touch module sequentially comprises an upper touch electrode composite layer, an adhesive layer and a lower touch function composite layer, the upper touch electrode composite layer comprises an upper touch electrode and a first base material, and the upper touch electrode is located on the upper surface or the lower surface of the first base material; the lower touch function composite layer sequentially comprises a lower touch electrode, a second base material and a heating function layer. The lower touch function composite layer is made of double-face conductive transparent materials, the lower touch electrodes are located on the upper surface of the second base material, and the heating function layer is located on the lower surface of the second base material. According to the invention, the touch display equipment has the functions of heating, electromagnetic shielding and the like, so that the touch display equipment is more intelligent and humanized, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of touch screens, and particularly relates to a multifunctional touch module and a touch display module thereof. BACKGROUND

[0002] A touch screen is an input device that significantly improves the human-machine operation interface and has the advantages of being intuitive, simple and fast. The touch screen has been widely applied in many electronic products, such as mobile phones, PDAs, multimedia, public information query systems and the like. Taking a GFF structure capacitive touch screen as an example, the basic structure thereof is a transmitting layer, OCA, a receiving layer, OCA and a cover plate glass; wherein the transmitting layer and the receiving layer are both patterned transparent conductive films. The transparent conductive film of the traditional CTP (OGS / TOL and GFF, etc.) structure touch screen is plated with ITO (nanometer indium tin metal oxide) and is made through laser etching, screen printing, yellow light etching and the like.

[0003] The traditional touch module adopts a GG structure or a GFF structure. The GG structure touch module is a capacitive touch screen with a layer of cover plate protection glass and a layer of functional sheet glass structure, and the two layers of glass are directly attached through OCA glue; the GFF structure touch module is a structure with two layers of conductive films, and a surface glass cover plate is further added, wherein the glass cover plate is attached to the conductive films and the two layers of conductive films through OCA glue.

[0004] However, with the popularization of curved and flexible display products, ITO limits the development direction of the touch screen to flexibility due to its own brittleness; in addition, with the development of the diversity of application scenarios, there is a higher requirement for the touch screen to have certain functional characteristics, for example, adding an anti-reflection layer, a light adaptation layer, a hardening layer and a heating layer in the internal structure of the touch screen has become a hot research direction. For example, in addition to the excellent conductivity of silver, nanometer silver wire has excellent light transmission and bending resistance due to the size effect of nanometer level, and becomes the main character of the curved and flexible screen. CONTENT OF THE UTILITY MODEL

[0005] The technical problem to be solved by the present application is to provide a multifunctional touch module and a touch display module thereof, which can make the touch display device have the functions of heating and electromagnetic shielding, so that the touch display device is more intelligent and humanized, thereby improving the user experience.

[0006] The technical problem to be solved by the present application is solved by the following technical scheme:

[0007] The present application provides a multifunctional touch module, which comprises, in sequence, an upper touch electrode composite layer, an attaching adhesive layer and a lower touch function composite layer.

[0008] The upper touch electrode composite layer comprises an upper touch electrode and a first substrate, and the upper touch electrode is located on the upper surface or lower surface of the first substrate.

[0009] The lower touch function composite layer comprises, in sequence, a lower touch electrode, a second substrate and a heating function layer.

[0010] The lower touch function composite layer adopts a double-sided conductive transparent material, the lower touch electrode is located on the upper surface of the second substrate, and the heating function layer is located on the lower surface of the second substrate.

[0011] As an improvement of the above technical solution, the upper touch electrode is located on the upper surface of the first substrate, and the touch module further comprises a bonding adhesive and a cover plate located on the upper side of the upper touch electrode composite layer.

[0012] As an improvement of the above technical solution, the cover plate comprises a flexible cover plate and a rigid cover plate.

[0013] As an improvement of the above technical solution, the upper touch electrode is located on the lower surface of the first substrate, and the upper surface of the first substrate further comprises a hardening function layer or an anti-glare function layer, and the surface hardness is higher than 1H, which can be used as a cover plate. Further, the first substrate can further comprise other post-processing modes, such as an anti-fingerprint layer, an optical adaptation layer, a hardening layer, etc.

[0014] As an improvement of the above technical solution, the upper touch electrode or the lower touch electrode is a multi-level nano metal network, a metal mesh, ITO, a metal nanowire, graphene, a carbon nanotube, a conductive polymer or any combination thereof.

[0015] As an improvement of the above technical solution, the heating function layer is a multi-level nano metal network, a metal mesh, ITO, a metal nanowire, graphene, a carbon nanotube, a conductive polymer or any combination thereof.

[0016] As an improvement of the above technical solution, the upper touch electrode and the lower touch electrode adopt a jumper bridge structure to form a touch function layer.

[0017] As an improvement of the above technical solution, the touch function layer and the heating function layer are arranged on the two surfaces of the substrate, and the heating function layer is arranged on the lower surface of the substrate.

[0018] The application also provides a multifunctional touch display module, comprising any of the above multifunctional touch modules, and the multifunctional touch module is bonded to the lower side of the display module.

[0019] The lower touch function composite layer of the present application is used as a lower touch electrode and a heating function layer at the same time. Meanwhile, the heating function layer is located at the lower side of the multifunctional touch module, and after being attached to the display module, it can also be used as a shielding layer of the electrical signal of the display module, that is, the lower touch function composite layer has three functions of lower touch electrode, heating function layer and shielding layer of the electrical signal of the display module.

[0020] The principle of the heating film is based on the resistance heating effect of the conductive film, which can convert electrical energy into heat energy. By applying a metal electrode on the transparent conductive layer, a conductive loop is formed, and when the current passes through, the transparent conductive layer generates heat, thereby achieving the heating effect.

[0021] The touch function layer adopts a jumper bridging structure, and the touch function layer, the substrate and the heating function layer together form a touch heating composite layer. The touch function layer and the heating function layer are arranged on both surfaces of the substrate, that is, a double-sided conductive film, one side of which is used as a heating function layer, and the other side is used as a touch function layer through a jumper bridging process. The touch function layer is arranged on the upper surface of the substrate. The double-sided conductive layer of the double-sided conductive film used can be of the same material or of different functional layer materials.

[0022] The preparation method of the multifunctional touch module includes the following steps:

[0023] (1) Making the edge lines of the upper touch electrode, the lower touch electrode and the heating function layer; the edge line making methods include but are not limited to low-resistance film material integrated etching, silver paste printing, inkjet printing edge lines, etc.

[0024] (2) Etching the upper touch electrode and the lower touch electrode by etching; the etching method includes laser etching, yellow light etching, wet etching, preferably yellow light etching;

[0025] (3) Attaching the upper touch electrode composite layer and the lower touch function composite layer;

[0026] (4) Binding the touch module flexible circuit board;

[0027] (5) Binding the heating flexible circuit board.

[0028] Another preparation method of the multifunctional touch module includes the following steps:

[0029] (1) Preparing the touch function layer on the upper side of the double-sided conductive film by the jumper bridging process;

[0030] (2) Making the edge lines of the heating function layer on the lower side of the double-sided conductive film; the edge line making methods include but are not limited to low-resistance film material integrated etching, silver paste printing, inkjet printing edge lines, etc.

[0031] (3) Binding touch module flexible circuit board;

[0032] (4) Binding heating flexible circuit board;

[0033] (5) Laminating cover plate.

[0034] The multifunctional touch module and the touch display module thereof have the following advantages:

[0035] 1. The multifunctional touch module can be applied to laminating with various display modules, avoiding the interference of the signals of the display module on the signals of the touch module.

[0036] 2. The touch display module realizes the functions of touch, display, heating and electromagnetic shielding without increasing components, and is light and thin, simple to make and low in cost.

[0037] 3. The heating function layer is made of the other side of the double-sided conductive film without additional physical film.

[0038] In summary, the application is suitable for multiple scenes, especially for low-temperature scenes, and can selectively turn on or off the heating function, avoid frost and fog on the device, prevent ice hands, increase the comfort of use, increase the service life of the device, and avoid the interference of the signals of the display module on the signals of the touch module. BRIEF DESCRIPTION OF DRAWINGS

[0039] The same reference numerals in the drawings represent the same or similar components, and some components in the drawings are enlarged indefinitely for easy understanding. The specific shapes in the drawings have nothing to do with the shape information of the actual components, and are only for easy identification and description. Obviously, those skilled in the art can obtain other drawings from these drawings without any creative labor.

[0040] Figure 1 It is a basic cross-sectional structure schematic diagram of an embodiment device of the application.

[0041] Figure 2 It is a basic cross-sectional structure schematic diagram of another embodiment device of the application.

[0042] Figure 3 It is a basic cross-sectional structure schematic diagram of another embodiment device of the application.

[0043] Figure 4 It is a jumper bridging structure process flow schematic diagram.

[0044] FIG. ID:

[0045] 1. Upper touch electrode composite layer

[0046] 11. First substrate 12. Upper touch electrode 13. Additional functional layer

[0047] 2. Lower touch electrode composite layer

[0048] 21. Second substrate 22. Lower touch electrode 23. Heating functional layer

[0049] 3. Adhesive layer 4. Adhesive 5. Cover plate

[0050] 6. Touch-controlled heating composite layer

[0051] 61. Substrate; 62. Jumper bridging structure touch function layer; 63. Heating function layer

[0052] 621. Jumper bridging structure first touch electrode

[0053] 622. Jumper bridging structure for the second touch electrode

[0054] 6221. Jumper bridging structure, second touch electrode, first part

[0055] 6222. Jumper bridging structure, second part of the second touch electrode

[0056] 623. Insulation layer of jumper bridging structure Detailed Implementation

[0057] Example 1

[0058] like Figure 1 The diagram shown is a basic cross-sectional view of the device in this embodiment. From top to bottom, it includes a cover plate 5, adhesive 4, upper touch electrode 12, first substrate 11, adhesive 3, lower touch electrode 22, second substrate 21, and heating functional layer 23. The upper touch electrode 12 and the first substrate 11 form the upper touch electrode composite layer 1; the lower touch electrode 22, the second substrate 21, and the heating functional layer 23 form the lower touch electrode composite layer 2.

[0059] The upper touch electrode 12 is located on the upper surface of the first substrate 11. The touch module also includes an adhesive 4 and a cover plate 5 located on the upper side of the upper touch electrode composite layer. The lower touch function composite layer 2 serves as both a lower touch electrode and a heating function layer. Meanwhile, the heating function layer 23 is located on the lower side of the multi-functional touch module. After being bonded to the display module, it can also be used as a shielding layer for the electrical signals of the display module. In other words, the lower touch function composite layer has three functions: a lower touch electrode, a heating function layer, and a shielding layer for the electrical signals of the display module.

[0060] The upper touch electrode is a multi-level nano-metal network, metal mesh, ITO, metal nanowire, graphene, carbon nanotube, conductive polymer, or any combination thereof.

[0061] The lower touch electrode is a multi-level nano-metal network, metal mesh, ITO, metal nanowire, graphene, carbon nanotube, conductive polymer, or any combination thereof.

[0062] The heating functional layer is a multi-level nano-metal network, metal mesh, ITO, metal nanowires, graphene, carbon nanotubes, conductive polymers, or any combination thereof.

[0063] Example 2

[0064] like Figure 2 The diagram shown is a basic cross-sectional view of the device in this embodiment. From top to bottom, it includes a hardening functional layer (or anti-glare functional layer) 13, a first substrate 11, an upper touch electrode 12, an adhesive 3, a lower touch electrode 22, a second substrate 21, and a heating functional layer 23. The hardening functional layer (or anti-glare functional layer) 13, the upper touch electrode 12, and the first substrate 11 constitute the upper touch electrode composite layer 1; the lower touch electrode 22, the second substrate 21, and the heating functional layer 23 constitute the lower touch electrode composite layer 2.

[0065] The upper touch electrode 12 is located on the lower surface of the first substrate 11. The upper surface of the first substrate 11 includes a hardening functional layer (or an anti-glare functional layer) 13, which has a surface hardness higher than 1H and can also be used as a cover plate. The lower touch functional composite layer 2 serves as both a lower touch electrode and a heating functional layer. At the same time, the heating functional layer 23 is located on the lower side of the multi-functional touch module. After being attached to the display module, it can also be used as a shielding layer for the electrical signals of the display module. That is, the lower touch functional composite layer has three functions: a lower touch electrode, a heating functional layer, and a shielding layer for the electrical signals of the display module.

[0066] The upper touch electrode is a multi-level nano-metal network, metal mesh, ITO, metal nanowire, graphene, carbon nanotube, conductive polymer, or any combination thereof.

[0067] The lower touch electrode is a multi-level nano-metal network, metal mesh, ITO, metal nanowire, graphene, carbon nanotube, conductive polymer, or any combination thereof.

[0068] The heating functional layer is a multi-level nano-metal network, metal mesh, ITO, metal nanowires, graphene, carbon nanotubes, conductive polymers, or any combination thereof.

[0069] Example 3

[0070] like Figure 3 The diagram shown is a basic cross-sectional view of the device in this embodiment. From top to bottom, it includes a cover plate 5, adhesive 4, touch function layer 62, substrate 61, and heating function layer 63. The touch function layer 62, substrate 61, and heating function layer 63 together form the touch-heating composite layer 6.

[0071] As shown in Figure 4 Figure, it is a jumper bridge structure process flow diagram. In the double-sided conductive film as a touch function layer 62 using a side by etching method to form the first touch electrode 621 and the second touch electrode first part 6221, the preparation of the insulating layer 623, the preparation of the second touch electrode second part 6222, the second touch electrode first part 6221 through the second touch electrode second part 6222 connection, together constitute the second touch electrode 622, the second touch electrode 622 and the first touch electrode 621 are insulated from each other, separated by the insulating layer 623. Among them, the heating function layer 63 and the touch function layer 62 respectively use two layers of conductive layer of double-sided conductive film, located on both sides of the substrate 61, the heating function layer 63 is located on the lower side of the substrate 61.

[0072] Example 4

[0073] A method for preparing a multifunctional touch module, comprising the following steps:

[0074] (1) making the edge line of the upper touch electrode, the lower touch electrode and the heating function layer; the edge line making method includes but is not limited to low resistance film material integrated etching, screen printing silver paste, inkjet printing edge line, etc.;

[0075] (2) etching the upper touch electrode and the lower touch electrode by etching; the etching method includes laser etching, yellow light etching, wet etching, preferably yellow light etching;

[0076] (3) bonding the upper touch electrode composite layer and the lower touch function composite layer;

[0077] (4) binding the touch module flexible circuit board;

[0078] (5) binding the heating module flexible circuit board.

[0079] The upper touch electrode adopts a multi-stage nano metal network, the lower touch electrode adopts a nano silver wire, and the heating function layer adopts a combination layer of nano silver wire and ITO.

[0080] Example 5

[0081] A method for preparing a multifunctional touch module, comprising the following steps:

[0082] (1) preparing a touch function layer by jumper bridge process;

[0083] (2) making the edge line of the heating function layer; the edge line making method includes but is not limited to low resistance film material integrated etching, screen printing silver paste, inkjet printing edge line, etc.;

[0084] (3) binding the touch module flexible circuit board;

[0085] (4) Binding heating flexible circuit board;

[0086] (5) Adhere cover plate.

[0087] The touch function layer adopts nano silver wire, and the heating function layer adopts nano silver wire.

[0088] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the examples, those skilled in the art should understand that modifications or equivalent replacements of the technical solutions of the present application do not deviate from the spirit and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A multi-functional touch module, comprising in sequence: The upper touch electrode composite layer, the adhesive layer and the lower touch function composite layer; The upper touch electrode composite layer comprises an upper touch electrode and a first substrate, and the upper touch electrode is located on the upper surface or the lower surface of the first substrate. The lower touch function composite layer comprises, in sequence, a lower touch electrode, a second substrate and a heating function layer. 2.The multi-functional touch module according to claim 1, characterized in that, The lower touch function composite layer adopts double-sided conductive transparent material, the lower touch electrode is located on the upper surface of the second substrate, and the heating function layer is located on the lower surface of the second substrate. 3.The multi-functional touch module according to claim 1, characterized in that, The upper touch electrode is located on the upper surface of the first substrate, and the touch module further comprises an adhesive layer and a cover plate located on the upper side of the upper touch electrode composite layer. 4.The multi-functional touch module according to claim 3, characterized in that, The cover plate comprises a flexible cover plate and a rigid cover plate. 5.The multi-functional touch module according to claim 1, characterized in that, The upper touch electrode is located on the lower surface of the first substrate, and the upper surface of the first substrate further comprises a hardening function layer or an anti-glare function layer, and the surface hardness is higher than 1H. 6.The multi-functional touch module according to claim 1, wherein, The upper touch electrode or the lower touch electrode is a multi-level nano metal network, a metal mesh, ITO, a metal nanowire, graphene, a carbon nanotube, a conductive polymer or any combination thereof. 7.The multi-functional touch module according to claim 1, wherein, The heating function layer is a multi-level nano metal network, a metal mesh, ITO, a metal nanowire, graphene, a carbon nanotube, a conductive polymer or any combination thereof. 8.The multi-functional touch module according to claim 1, wherein, The upper touch electrode and the lower touch electrode adopt a jumper bridging structure to form a touch function layer. 9.The multi-functional touch module according to claim 8, wherein, The touch function layer and the heating function layer are arranged on two surfaces of the substrate, and the heating function layer is arranged on the lower surface of the substrate.

10. A multifunctional touch display module, comprising the multifunctional touch module according to any one of claims 1-9, and the multifunctional touch module is attached to the lower side of the display module.

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