Integrated anti-interference touch panel and touch display module

Abstract

The utility model discloses an integrated anti-interference touch panel which comprises touch glass provided with a lower surface close to a display panel and an upper surface far away from the display panel; the touch electrode layer is arranged on the upper surface of the touch glass; the electromagnetic shielding layer is arranged on the lower surface of the touch glass. The touch panel has an anti-electromagnetic interference function. The utility model further discloses a touch display module which comprises the touch panel.

Description

Technical Field

[0001] This utility model relates to anti-interference technology, and more particularly to an integrated anti-interference touch panel and touch display module. Background Technology

[0002] A touch display module is formed by bonding a touch panel and a display panel together. In some cases, the electromagnetic signals generated by the touch panel can interfere with the display panel, and vice versa. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model provides an integrated anti-interference touch panel with anti-electromagnetic interference functionality.

[0004] This utility model also provides a touch display module, including the above-mentioned touch panel.

[0005] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0006] An integrated anti-interference touch panel, comprising:

[0007] The touch glass has a lower surface near the display panel and an upper surface away from the display panel;

[0008] A touch electrode layer is disposed on the upper surface of the touch glass;

[0009] An electromagnetic shielding layer is disposed on the lower surface of the touch glass.

[0010] Furthermore, the electromagnetic shielding layer includes a transparent conductive film.

[0011] Furthermore, the transparent conductive film is an indium tin oxide film, a zinc oxide film, or a titanium oxide film.

[0012] Furthermore, the touch panel also includes:

[0013] A flexible circuit board includes a ground pin, an electrical connector, and a ground trace, wherein the ground trace is connected between the ground pin and the electrical connector; the ground pin is electrically connected to the transparent conductive film.

[0014] Furthermore, the flexible circuit board also includes signal pins, electrical connectors, and signal traces, with the signal traces connected between the signal pins and the electrical connectors; the signal pins are bonded to the touch electrode layer.

[0015] Furthermore, the flexible circuit board has a circuit board body, a grounding connection arm and a touch connection arm extending from the circuit board body to a first end, and a motherboard connection arm extending from the circuit board body to a second end. The grounding connection arm and the touch connection arm are arranged side by side. The grounding pin is disposed at the end of the grounding connection arm, the signal pin is disposed at the end of the touch connection arm, and the electrical connector is disposed at the end of the motherboard connection arm. The first end and the second end are arranged opposite to each other.

[0016] Furthermore, the electromagnetic shielding layer also includes a transparent insulating film disposed on the lower surface of the transparent conductive film.

[0017] Furthermore, the transparent insulating film has a hollowed-out area on one edge, thereby partially exposing the transparent conductive film for electrical connection with the flexible circuit board.

[0018] Furthermore, the electromagnetic shielding layer also includes a transparent UV-resistant film, which is disposed on the upper surface of the metal oxide film.

[0019] A touch display module includes a display panel and the aforementioned touch panel, wherein the display panel is fixed to the lower surface of the touch panel by adhesive.

[0020] This utility model has the following beneficial effects:

[0021] The touch panel of this utility model is used in conjunction with a display panel to allow users to perform touch operations on the display screen. By integrating the electromagnetic shielding layer on the lower surface of the touch glass near the display panel, it achieves anti-electromagnetic interference function, which can prevent the electromagnetic signals generated by the touch electrode layer from interfering with the display panel, and also prevent the electromagnetic signals generated by the display panel from interfering with the touch electrode layer, thereby improving the stability of the touch display module.

[0022] The touch panel of this utility model integrates the transparent anti-UV film on the upper surface of the metal oxide film (transparent conductive film) to achieve the function of anti-UV. It can absorb or reflect external ultraviolet rays that pass through the touch glass, thereby reducing the amount of external ultraviolet rays reaching the surface of the metal oxide film and thus preventing the metal oxide film from yellowing and degrading in performance under long-term external ultraviolet radiation.

[0023] The touch panel of this utility model adopts the flexible circuit board and the transparent conductive film to achieve the grounding treatment of the transparent conductive film. When the touch electrode layer is energized and the touch glass generates static electricity due to friction with external objects, the transparent conductive film can also collect the static electricity generated by the touch electrode layer and the touch glass, and release the collected static electricity to the ground through the flexible circuit board, thereby avoiding damage to the touch panel by static electricity.

[0024] The touch panel of this invention shares a flexible circuit board with the touch electrode layer and the transparent conductive film. The two are electrically connected to the control motherboard of terminal devices such as mobile phones through electrical connectors on the flexible circuit board, thereby realizing the transmission of touch signals and the grounding of electrostatic signals. This can save circuit board materials and improve assembly efficiency. Attached Figure Description

[0025] Figure 1 A schematic diagram of the stacked structure of the touch panel provided by this utility model.

[0026] Figure 2 This is a schematic diagram of another stacked structure of the touch panel provided by this utility model.

[0027] Figure 3 This is a schematic diagram of another stacked structure of the touch panel provided by this utility model.

[0028] Figure 4 for Figure 3 The diagram shows a planar structure of the flexible circuit board in the touch panel.

[0029] Figure 5 for Figure 3 The diagram shows a planar structure of the electromagnetic shielding layer in the touch panel.

[0030] Figure 6 A schematic diagram of the stacked structure of the touch display module provided by this utility model. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Example 1

[0036] like Figure 1 As shown, an integrated anti-interference touch panel includes:

[0037] The touch glass 31 has a lower surface near the display panel and an upper surface away from the display panel;

[0038] A touch electrode layer 32 is disposed on the upper surface of the touch glass 31;

[0039] An electromagnetic shielding layer 33 is disposed on the lower surface of the touch glass 31.

[0040] The touch panel of this utility model is used in conjunction with a display panel to allow users to perform touch operations on the display screen. By integrating the electromagnetic shielding layer 33 on the lower surface of the touch glass 31 near the display panel, it achieves an anti-electromagnetic interference function. This prevents the electromagnetic signals generated by the touch electrode layer 32 from interfering with the display panel, and also prevents the electromagnetic signals generated by the display panel from interfering with the touch electrode layer 32, thereby improving the stability of the touch display module.

[0041] The touch electrode layer 32 can be, but is not limited to, a conductive thin film electrode layer or a metal mesh electrode layer. The transparent thin film electrode layer is formed by etching conductive thin films such as ITO, AZO, or ZnO to create electrode patterns. The metal mesh electrode layer is formed by etching metal meshes such as Al or Mo to create electrode patterns. In fact, the type of touch electrode layer 32 is not limited to the two mentioned above. Any type of touch electrode layer 32 has electromagnetic interference issues; therefore, the touch electrode layer 32 in this embodiment is not limited to the two types described above.

[0042] The electromagnetic shielding layer 33 includes a transparent conductive film 331, which is a metal oxide film such as indium tin oxide film, zinc oxide film or titanium oxide film. It is formed on the lower surface of the touch glass 31 by magnetron sputtering, vacuum evaporation or vapor deposition. The thickness of the transparent conductive film 331 is between 50-150 nm.

[0043] Preferably, the electromagnetic shielding layer 33 further includes a transparent insulating film 332, which is disposed on the lower surface of the transparent conductive film 331 to insulate the transparent conductive film 331 from the outside world and to protect the transparent conductive film 331.

[0044] The transparent insulating film 332 may be, but is not limited to, a non-metallic oxide film such as silicon oxide film, silicon nitride film or silicon oxynitride film, and is formed on the lower surface of the transparent conductive film 331 by means of magnetron sputtering, vacuum evaporation or vapor deposition; the thickness of the transparent insulating film 332 is between 10-30 nm.

[0045] Example 2

[0046] Because most metal oxide films undergo reactions such as molecular chain breakage, free radical oxidation, and double bond shift when exposed to ultraviolet light for a long time, these reactions will cause changes in the chemical structure of the metal oxide film 331, thereby reducing its performance, manifested as yellowing and reduced transparency.

[0047] As an optimization of Embodiment 1, in this embodiment, such as Figure 2The electromagnetic shielding layer 33 further includes a transparent UV-resistant film 333, which is disposed on the upper surface of the metal oxide film 331.

[0048] The touch panel of this invention integrates the transparent anti-UV film 333 on the upper surface of the metal oxide film 331 (transparent conductive film 331) to achieve the function of anti-UV. It can absorb or reflect external ultraviolet rays that pass through the touch glass 31, thereby reducing the amount of external ultraviolet rays reaching the surface of the metal oxide film 331 and thus preventing the metal oxide film 331 from yellowing or degrading in performance under long-term external ultraviolet radiation.

[0049] The transparent anti-UV film 333 may be, but is not limited to, a cadmium selenide film with a thickness between 100-200 nm. It is first formed on the lower surface of the touch glass 31 by means of magnetron sputtering, vacuum evaporation or vapor deposition, and then the metal oxide film 331 is formed on the lower surface of the transparent anti-UV film 333.

[0050] Example 3

[0051] As an optimization of Embodiment 1 or Embodiment 2, in this embodiment, such as Figure 3 and 4 As shown, the touch panel also includes:

[0052] The flexible circuit board 34 includes a ground pin 341, an electrical connector 342, and a ground trace (not shown in the figure). The ground trace is connected between the ground pin 341 and the electrical connector 342. The ground pin 341 is electrically connected to the transparent conductive film 331.

[0053] The touch panel of this utility model adopts the flexible circuit board 34 and the transparent conductive film 331 in an electrical connection to achieve the grounding treatment of the transparent conductive film 331; when the touch electrode layer 32 is energized and static electricity is generated by the friction between the touch glass 31 and the external object, the transparent conductive film 331 can also collect the static electricity generated by the touch electrode layer 32 and the touch glass 31, and release the collected static electricity to the ground through the flexible circuit board 34, thereby avoiding the touch panel from being damaged by static electricity.

[0054] like Figure 5 As shown, the transparent insulating film 332 has a hollow area 3320 formed on one edge by a later etching method, thereby partially exposing the transparent conductive film 331 so that the transparent conductive film 331 can be electrically connected to the flexible circuit board 34.

[0055] Preferably, the grounding pin 341 of the flexible circuit board 34 is bonded and fixed to the transparent conductive film 331 by conductive double-sided adhesive 35, and an electrical connection is achieved at the same time.

[0056] The flexible circuit board 34 also includes signal pins 343 and signal traces, the signal traces being connected between the signal pins 343 and the electrical connector 344; the signal pins 343 are bonded to the touch electrode layer 32.

[0057] The touch panel of this utility model shares a flexible circuit board 34 with the touch electrode layer 32 and the transparent conductive film 331. The two are electrically connected to the control motherboard of terminal devices such as mobile phones through the electrical connector 344 on the flexible circuit board 34, thereby realizing the transmission of touch signals and the grounding of electrostatic signals. This can save circuit board materials and improve assembly efficiency.

[0058] like Figure 4 As shown, the flexible circuit board 34 has a circuit board body 340, a grounding connection arm 344 and a touch connection arm 345 extending from the circuit board body 340 to a first end, and a motherboard connection arm 346 extending from the circuit board body 340 to a second end. The grounding connection arm 344 and the touch connection arm 345 are arranged side by side. The grounding pin 341 is disposed at the end of the grounding connection arm 344, the signal pin 343 is disposed at the end of the touch connection arm 345, and the electrical connector 342 is disposed at the end of the motherboard connection arm 346. The first end and the second end are arranged opposite to each other.

[0059] During assembly, the flexible circuit board 34 is electrically connected to the control motherboard of a terminal device such as a mobile phone through the electrical connector 342 on the motherboard connecting arm 346, thereby realizing the transmission of touch signals and the grounding of electrostatic signals.

[0060] Example 4

[0061] like Figure 6 As shown, a touch display module includes a display panel 10 and a touch panel 30 as described in Embodiment 1, Embodiment 2 or Embodiment 3, wherein the display panel 10 is fixed to the lower surface of the touch panel 30 by adhesive.

[0062] Preferably, the display panel 10 is attached and fixed to the lower surface of the touch panel 30 by OCA optical adhesive 20.

[0063] 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 touch panel with integrated anti-interference capabilities, characterized in that, include: The touch glass has a lower surface near the display panel and an upper surface away from the display panel; A touch electrode layer is disposed on the upper surface of the touch glass; An electromagnetic shielding layer is disposed on the lower surface of the touch glass; The electromagnetic shielding layer includes a transparent conductive film, which is a metal oxide film. The electromagnetic shielding layer also includes a transparent UV-resistant film, which is disposed on the upper surface of the metal oxide film.

2. The touch panel according to claim 1, characterized in that, The touch panel also includes: A flexible circuit board includes a ground pin, an electrical connector, and a ground trace, wherein the ground trace is connected between the ground pin and the electrical connector; the ground pin is electrically connected to the transparent conductive film.

3. The touch panel according to claim 2, characterized in that, The flexible circuit board also includes signal pins, electrical connectors, and signal traces, with the signal traces connecting the signal pins and the electrical connectors; the signal pins are bonded to the touch electrode layer.

4. The touch panel according to claim 3, characterized in that, The flexible circuit board has a circuit board body, a grounding connection arm and a touch connection arm extending from the circuit board body to a first end, and a motherboard connection arm extending from the circuit board body to a second end. The grounding connection arm and the touch connection arm are arranged side by side. The grounding pin is located at the end of the grounding connection arm, the signal pin is located at the end of the touch connection arm, and the electrical connector is located at the end of the motherboard connection arm. The first end and the second end are arranged opposite to each other.

5. The touch panel according to claim 1, characterized in that, The electromagnetic shielding layer also includes a transparent insulating film, which is disposed on the lower surface of the transparent conductive film.

6. The touch panel according to claim 5, characterized in that, The transparent insulating film has a hollowed-out area on one edge, thereby partially exposing the transparent conductive film for electrical connection with the flexible circuit board.

7. A touch display module, characterized in that, It includes a display panel and a touch panel as described in claim 1, wherein the display panel is fixed to the lower surface of the touch panel by adhesive.

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