Touch screen structure adopting touch key film and touch screen display

Abstract

A touch screen structure and a touch screen display using a touch key film, the touch screen structure comprising: a transparent substrate comprising a visible area and a key area; a film sensor corresponding to the visible area is arranged on the back surface of the transparent substrate; the touch key film is a flexible film and is provided with a wiring pin; the touch key film is attached to the back surface of the transparent substrate and corresponds to the key area; one end of the first FPC is respectively bound and connected with the film sensor of the transparent substrate and the wiring pin of the touch key film, and the other end of the first FPC is used for being connected with a touch screen mainboard; the touch sensor is used for transmitting touch signals of the visible area and the key area. According to the touch screen structure, materials can be saved, the cost can be reduced, the display size of a product can be prevented from being affected, and the maximum display size capacity of the product of an existing film sensor device can be improved.

Description

Technical Field

[0001] The present application relates to the field of touch technology, and in particular to a touch screen structure and a touch screen display using a touch button film. Background Art

[0002] In conventional designs, the touch screen structure is an integrated design of the touch visible area and the touch key area, that is, an integrated film sensor is formed on the entire touch function panel, part of which is used for touch display and part of which is used for touch keys.

[0003] However, with the development of technology and the improvement of user needs, in some specific application scenarios, such as in some cockpit display systems, the key area and the visual area cannot be set close to each other, and even need to be set at a distance to improve the safety of operation. On the one hand, this will lead to a large area of ​​film sensor material waste in the interval area, which is not conducive to cost control; on the other hand, it will cause the existing film sensor equipment to limit the maximum display size of the partition touch product.

[0004] Based on this, how to design a touch screen structure that can save materials and avoid affecting the product display size has become an urgent problem to be solved in the industry. Summary of the invention

[0005] In order to solve at least one problem existing in the prior art, the purpose of the present application is to provide a touch screen structure and a touch screen display using a touch button film, which can not only save materials and reduce costs, but also avoid affecting the product display size, and help to improve the maximum display size capability of existing film sensor devices.

[0006] To achieve the above-mentioned purpose, the present application provides a touch screen structure using a touch key film, comprising:

[0007] A transparent substrate, comprising a visible area and a key area; a film sensor corresponding to the visible area is provided on the back of the transparent substrate;

[0008] A touch key film is a flexible film and has wiring pins; the touch key film is attached to the back of the transparent substrate and corresponds to the key area; and,

[0009] The first FPC has one end bound and connected to the connection pins of the film sensor of the transparent substrate and the touch key film respectively, and the other end is used to connect to the touch screen mainboard; and is used to transmit the touch signal of the visual area and the key area.

[0010] Optionally, a binding area of ​​the film sensor used to bind the first FPC and connection pins of the touch key membrane are both located on the same side of the film sensor and the touch key membrane, and the two are arranged close to each other.

[0011] Optionally, the touch screen structure includes a film sensor, N touch button films and a first FPC, N≥2;

[0012] One end of the first FPC is bound and connected to the film sensor of the transparent substrate and the connection pins of the N touch key films respectively.

[0013] Optionally, the touch screen structure includes N film sensors, a touch button membrane and N first FPCs, where N≥2;

[0014] Among them, one end of the N first FPCs is bound and connected to the N film sensors one by one; the other ends of the N first FPCs are bound and connected to the touch screen mainboard respectively;

[0015] The touch key film has N wiring pins; the N wiring pins are respectively bound and connected with the N film sensors in a one-to-one correspondence.

[0016] To achieve the above-mentioned purpose, the present application provides another touch screen structure using a touch key film, comprising:

[0017] A transparent substrate, comprising a visible area and a key area; a film sensor corresponding to the visible area is provided on the back of the transparent substrate;

[0018] A touch key film is a flexible film and has wiring pins; the touch key film is attached to the back of the transparent substrate and corresponds to the key area; and,

[0019] A first FPC, one end of which is bound and connected to the film sensor of the transparent substrate, and the other end of which is used to connect to the touch screen mainboard; and is used to transmit touch signals of the visual area and the key area;

[0020] The second FPC has one end bound and connected to the film sensor and the other end bound and connected to the wiring pin of the touch key film; and is used to transmit the touch signal of the key area.

[0021] Optionally, the touch screen structure includes a film sensor, N touch button films, a first FPC and N second FPCs, N≥2;

[0022] Among them, one end of the N second FPCs is respectively bound and connected to the one film sensor; the other ends of the N second FPCs are respectively bound and connected to the wiring pins of the N touch key films in a one-to-one correspondence.

[0023] Optionally, the touch screen structure includes N film sensors, a touch button membrane, N first FPCs and N second FPCs, where N≥2;

[0024] Wherein, one end of the N first FPCs is bound and connected to the N film sensors one by one; the other ends of the N first FPCs are bound and connected to the touch screen mainboard respectively;

[0025] One ends of the N second FPCs are bound and connected to the N film sensors in a one-to-one correspondence; the other ends of the N second FPCs are bound and connected to the wiring pins of the one touch key membrane.

[0026] Optionally, a non-touch sensing area is spaced between the visible area and the key area, and the length of the space is greater than a first spacing threshold.

[0027] Further optionally, the second FPC spans across the non-touch sensing area and forms binding connections with the wiring pins of the film sensor and the touch key membrane respectively.

[0028] To achieve the above-mentioned purpose, the present application also provides a touch screen display, including: the touch screen structure as described above.

[0029] The touch screen structure and touch screen display using a touch key film of the present application prepare a film sensor in the visible area and attach the touch key film to the key area of ​​the transparent substrate, without preparing a film sensor on the entire back of the transparent substrate. Also, one end of the first FPC is respectively bound and connected to the wiring pins of the film sensor and the touch key film of the transparent substrate, so that the touch signal of the visible area and the key area can be transmitted to the touch screen mainboard through the first FPC; or, the second FPC is bound and connected between the film sensor and the touch key film to transmit the touch signal of the key area to the film sensor; and one end of the first FPC is bound and connected to the film sensor to transmit the touch signal of the visible area and the touch signal of the key area to the touch screen mainboard. As a result, it can not only save materials and reduce costs, but also avoid affecting the display size of the product, which helps to improve the maximum display size capability of the existing film sensor equipment.

[0030] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0032] Figure 1 is a front schematic diagram of a touch screen structure according to an embodiment of the present application;

[0033] Figure 2 for Figure 1 A schematic diagram of the back of the touch screen structure;

[0034] Figure 3 is a front schematic diagram of a touch screen structure according to another embodiment of the present application;

[0035] Figure 4 for Figure 3 Schematic diagram of the back of the touch screen structure.

[0036] Specifically, the following reference numerals are included:

[0037] Touch screen structure 100;

[0038] Transparent substrate 10; visual area 11; key area 12; non-touch sensing area 13; film sensor 14;

[0039] Touch key membrane 20; Wiring pin 21;

[0040] first FPC 30 ; second FPC 40 . DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0042] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0043] Example 1

[0044] like Figure 1-2 As shown, a touch screen structure 100 using a touch key film includes: a transparent substrate 10 , a touch key film 20 and a first FPC 30 .

[0045] The transparent substrate 10 includes a visible area 11 and a key area 12 . A non-touch sensing area 13 is spaced between the visible area 11 and the key area 12 . A film sensor 14 corresponding to the visible area 11 is disposed on the back of the transparent substrate 10 .

[0046] It should be noted that the film sensor is the sensing layer, which is one of the important components of the touch screen. In a specific example, an ITO layer can be formed on the back of the transparent glass by evaporation, sputtering, etc. The ITO is processed into a specific pattern structure to form a sensing unit of the capacitive touch screen, constituting the above-mentioned film sensor.

[0047] The touch key film 20 is a flexible film and has connection pins 21 . The touch key film 20 is attached to the back side of the transparent substrate 10 and corresponds to the key area 12 .

[0048] In a specific example, the touch key film 20 can be made by coating a conductive silver paste or other conductive materials on a flexible polyester film or a polycarbonate film. The touch key film 20 has a connection pin 21, which can be used for plugging or binding connection.

[0049] The first FPC 30 has one end connected to the film sensor 14 of the transparent substrate 10 and the connection pins 21 of the touch key film 20 , and the other end connected to the touch screen mainboard to transmit the touch signals of the visual area 11 and the key area 12 .

[0050] According to the touch screen structure of the embodiment of the present application, by preparing a film sensor in the visible area and attaching a touch key film in the key area, it is not necessary to prepare a film sensor on the back of the entire transparent substrate, and by binding and connecting one end of the first FPC to the film sensor and the wiring pins respectively, so that the first FPC can transmit the touch signal of the visible area and the key area to the touch screen mainboard. In this way, it can not only save materials and reduce costs, but also avoid affecting the display size of the product, which helps to improve the maximum display size capacity of the existing film sensor equipment.

[0051] Optionally, the binding area of ​​the film sensor 14 for binding the first FPC 30 and the connection pins 21 of the touch key membrane 20 are both located on the same side of the film sensor 14 and the touch key membrane 20, and the two are arranged close to each other, so as to save FPC materials and optimize space layout.

[0052] As an example, the touch screen structure 100 includes a film sensor 14, N touch key membranes 20 and a first FPC 30, where N≥2. One end of the first FPC 30 is respectively bound and connected to the film sensor 14 of the transparent substrate 10 and the connection pins 21 of the N touch key membranes 20. This is applicable to the application scenario of one film sensor and multiple touch key membranes, which can further save materials and reduce costs.

[0053] As another example, the touch screen structure 100 includes N film sensors 14, a touch key membrane 20 and N first FPCs 30, where N≥2. One end of the N first FPCs 30 is bound and connected to the N film sensors 14 in one-to-one correspondence; the other ends of the N first FPCs 30 are bound and connected to the touch screen mainboard; the touch key membrane 20 may have N wiring pins 21; the N wiring pins 21 are bound and connected to the N film sensors 14 in one-to-one correspondence. This is applicable to the application scenario of multiple film sensors and one touch key membrane, which can further save materials and reduce costs.

[0054] Example 2

[0055] like Figure 3-4 As shown, another touch screen structure 100 using a touch key film provided by the present application includes: a transparent substrate 10 , a touch key film 20 , a first FPC 30 and a second FPC 40 .

[0056] The transparent substrate 10 includes a visible area 11 and a key area 12 . A film sensor 14 corresponding to the visible area 11 is disposed on the back of the transparent substrate 10 .

[0057] The touch key film 20 is a flexible film and has connection pins 21 . The touch key film 20 is attached to the back side of the transparent substrate 10 and corresponds to the key area 12 .

[0058] The first FPC 30 has one end bound and connected to the film sensor 14 of the transparent substrate 10 , and the other end is used to connect to the touch screen mainboard; and is used to transmit touch signals of the visual area 11 and the key area 12 .

[0059] The second FPC 40 has one end connected to the film sensor 14 and the other end connected to the connection pin 21 of the touch key membrane 20 , so as to transmit the touch signal of the key area 12 .

[0060] It should be noted that the film sensor includes not only a first wiring for transmitting the touch signal in the visible area, but also a second wiring for transmitting the touch signal in the key area. One end of the first wiring is connected to the metal pin bound to the first FPC, and the other end is connected to the sensing structure of the film sensor; one end of the second wiring is connected to the metal pin bound to the first FPC, and the other end is connected to the metal pin bound to the second FPC.

[0061] The touch key film includes a wiring for transmitting the touch signal of the keyboard area, one end of which is connected to a metal pin bound to the second FPC, and the other end is connected to the sensing structure of the touch key film.

[0062] According to the touch screen structure of the embodiment of the present application, a non-touch sensing area is arranged between the visible area and the key area; and the second FPC is bound and connected between the film sensor and the touch key film to transmit the key area touch signal to the film sensor; and one end of the first FPC is bound and connected to the film sensor to transmit the visible area touch signal and the key area touch signal to the touch screen mainboard. In this way, it can not only save materials and reduce costs, but also avoid affecting the product display size, which is helpful to improve the maximum display size capacity of existing film sensor devices.

[0063] As an example, the touch screen structure 100 includes a film sensor 14, N touch key membranes 20, a first FPC 30 and N second FPCs 40, where N≥2. One end of the N second FPCs 40 is respectively bound and connected to a film sensor 14; the other ends of the N second FPCs 40 are respectively bound and connected to the connection pins 21 of the N touch key membranes 20 in a one-to-one correspondence. This is applicable to the application scenario of one film sensor and multiple touch key membranes, which can further save materials and reduce costs.

[0064] As another example, the touch screen structure 100 includes N film sensors 14, a touch key membrane 20, N first FPCs 30 and N second FPCs 40, where N≥2. Among them, one end of the N first FPCs 30 is bound and connected to the N film sensors 14 in one-to-one correspondence; the other end of the N first FPCs 30 is bound and connected to the touch screen mainboard; one end of the N second FPCs 40 is bound and connected to the N film sensors 14 in one-to-one correspondence; the other end of the N second FPCs 40 is bound and connected to the wiring pins 21 of a touch key membrane 20. It is suitable for application scenarios of multiple film sensors and one touch key membrane, which can further save materials and reduce costs.

[0065] Optionally, a non-touch sensing area 13 is spaced between the visible area 11 and the key area 12, and the length of the space is greater than the first spacing threshold. In this application scenario, the effect of saving materials and avoiding affecting the display size of the product is particularly prominent.

[0066] Further optionally, the second FPC 40 crosses the non-touch sensing area 13 and forms binding connections with the film sensor 14 and the connection pins 21 of the touch key membrane 20 respectively, so as to take into account a better layout and saving FPC materials.

[0067] Example 3

[0068] To achieve the above objectives, the present application also provides a touch screen display, including the touch screen structure in the above embodiments.

[0069] It should be noted that the concepts such as "first" and "second" mentioned in this application are only used to distinguish different units and structures, and are not used to limit the order, interdependence or relative importance of the functions performed by these units and structures.

[0070] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0071] Those skilled in the art can understand that the above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A touch screen structure using a touch key film, characterized in that: include: A transparent substrate, comprising a visible area and a key area; a film sensor corresponding to the visible area is provided on the back of the transparent substrate; The touch key film is a flexible film and has wiring pins; the touch key film is attached to the back of the transparent substrate and corresponds to the key area; and, The first FPC has one end respectively bound and connected to the wiring pins of the film sensor of the transparent substrate and the touch key film, and the other end is used to connect to the touch screen mainboard; and is used to transmit the touch signal of the visual area and the key area.

2. The touch screen structure according to claim 1, characterized in that: The binding area of ​​the film sensor used for the first FPC and the connection pins of the touch key membrane are both located on the same side of the film sensor and the touch key membrane, and the two are arranged close to each other.

3. The touch screen structure according to claim 1, characterized in that: The touch screen structure includes a film sensor, N touch button films and a first FPC, N≥2; One end of the first FPC is respectively bound and connected to the film sensor of the transparent substrate and the wiring pins of the N touch key films.

4. The touch screen structure according to claim 1, characterized in that: The touch screen structure includes N film sensors, a touch button film and N first FPCs, where N≥2; Among them, one end of the N first FPCs is bound and connected to the N film sensors one by one; the other ends of the N first FPCs are bound and connected to the touch screen mainboard respectively; The touch key film has N wiring pins; the N wiring pins are respectively bound and connected with the N film sensors in a one-to-one correspondence.

5. A touch screen structure, characterized in that: include: A transparent substrate, including a viewing area and a key area; A film sensor corresponding to the visible area is provided on the back of the transparent substrate; The touch key film is a flexible film and has wiring pins; the touch key film is attached to the back of the transparent substrate and corresponds to the key area; and, A first FPC, one end of which is bound and connected to the film sensor of the transparent substrate, and the other end of which is used to connect to the touch screen mainboard; and is used to transmit touch signals of the visual area and the key area; The second FPC has one end bound and connected to the film sensor and the other end bound and connected to the wiring pin of the touch key film; and is used to transmit the touch signal of the key area.

6. The touch screen structure according to claim 5, characterized in that: The touch screen structure includes a film sensor, N touch button films, a first FPC and N second FPCs, N≥2; Among them, one end of the N second FPCs is respectively bound and connected to the one film sensor; the other ends of the N second FPCs are respectively bound and connected to the wiring pins of the N touch key films in a one-to-one correspondence.

7. The touch screen structure according to claim 5, characterized in that: The touch screen structure includes N film sensors, a touch button membrane, N first FPCs and N second FPCs, where N≥2; Wherein, one end of the N first FPCs is bound and connected to the N film sensors one by one; the other ends of the N first FPCs are bound and connected to the touch screen mainboard respectively; One ends of the N second FPCs are bound and connected to the N film sensors in a one-to-one correspondence; the other ends of the N second FPCs are bound and connected to the wiring pins of the one touch key membrane.

8. The touch screen structure according to claim 5, characterized in that: A non-touch sensing area is spaced between the visible area and the key area, and the length of the space is greater than a first spacing threshold.

9. The touch screen structure according to claim 8, characterized in that: The second FPC crosses the non-touch sensing area and forms binding connections with the wiring pins of the film sensor and the touch key membrane respectively.

10. A touch screen display, characterized in that: include: The touch screen structure according to any one of claims 1 to 9.

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