Thin film touch key and plug-in structure thereof

Abstract

The utility model discloses a plug-in structure which comprises a base film plug-in part and film pins, and the film pins are arranged on the base film plug-in part. The insertion structure further comprises a rigid pin, the rigid pin comprises a pin connecting part and a pin insertion part, the pin connecting part is arranged on the thin film pin, and the pin insertion part extends out of the base film insertion part. The plug-in structure has relatively high use stability. The utility model further discloses a thin film touch key which comprises the plug-in structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to touch technology especially relates to a film touch key and its plug -in structure. BACKGROUND

[0002] With the continuous innovation of electronic technology and the rapid development of digital technology, many products begin to adopt film touch keys as control keys, and the film touch keys have the advantages of low cost, simple process, good hand feeling, and aesthetic appearance, and the application range is becoming larger and larger.

[0003] At present, most of the film touch keys are made of PEDOT, ITO, silver paste or carbon paste as conductive film to make film circuit. The film touch key is provided with a plug-in structure to plug with the electric connector on the control mainboard through the plug-in structure, and the conductive film of PEDOT, ITO, silver paste or carbon paste needs to be extended into the plug-in structure to form a film pin in conduction with the electric connector.

[0004] A film plug-in structure is disclosed in Chinese patent with application number CN202320679295.4, which comprises a base film, a conductive component, the conductive component comprising a plurality of silver paste strips and a plurality of carbon paste strips, each silver paste strip being equidistantly arranged on one side of the base film, each carbon paste strip being arranged on the base film and each carbon paste strip corresponding to a part of the structure of each silver paste strip, and an insulating film arranged on the base film to cover a part of the structure of the carbon paste strip and the silver paste strip.

[0005] However, the film pin is prone to wear due to its soft texture under the friction of the electric connector during plugging. The film touch key needs to be tested for multiple times before leaving the factory, and the plug-in structure needs to be plugged with the electric connector on the test mainboard each time, so the film pin is prone to poor conduction after multiple plugging and unplugging, thereby reducing the use stability of the film touch key. UTILITY MODEL CONTENTS

[0006] In order to solve the above problems of the prior art, the utility model provides a film touch key and its plug-in structure, which has high use stability.

[0007] The technical problem to be solved by the utility model is solved by the following technical scheme:

[0008] An insertion structure, comprising a base film insertion part and a film pin arranged on the base film insertion part; the insertion structure further comprises a rigid pin, the rigid pin comprising a pin connecting part and a pin insertion part, the pin connecting part being arranged on the film pin, and the pin insertion part extending out of the base film insertion part.

[0009] Further, the film pin comprises a first pin layer and a second pin layer, the first pin layer being arranged on the base film insertion part, and the second pin layer being arranged on the first pin layer, and the width of the second pin layer being greater than the width of the first pin layer.

[0010] Further, the width of the pin connecting part is greater than the width of the pin insertion part.

[0011] Further, the width of the second pin layer is equal to the width of the pin connecting part, and the width of the first pin layer is equal to the width of the pin insertion part.

[0012] Further, the first pin layer is a silver paste pin layer, and the second pin layer is a carbon paste pin layer.

[0013] Further, the rigid pin is a metal sheet pin, and the pin connecting part is fixedly connected to the film pin by welding or conductive adhesive.

[0014] Further, the pin connecting part is provided with a through hole structure, and the through hole structure is filled with conductive material.

[0015] Further, the insertion structure comprises a plurality of film pins and a plurality of rigid pins, and one rigid pin corresponds to one film pin.

[0016] A film touch key, comprising the insertion structure.

[0017] Further, the film touch key comprises a base film layer and a conductive film layer, and the conductive film layer is arranged on the base film layer.

[0018] The base film layer comprises a base film main part and the base film insertion part, and the base film insertion part is connected to one side of the base film main part.

[0019] The conductive film layer comprises a film capacitor, a film trace and the film pin, the film capacitor and the film trace are arranged on the base film main part, and the film capacitor is connected to the film pin through the film trace.

[0020] The utility model discloses a plug -in structure on the film pin sets rigid needle and the rigid needle is extended to the needle pin plug -in portion that forms the base film plug -in portion outside the rigid needle, replaces the film pin and the electric connector on the control mainboard and inserts, and the rigidity of rigid needle is greater, and the abrasion is less when inserting with the electric connector, can avoid the conduction of poor in the factory test stage in the process of plugging and unplugging repeatedly, thereby improve the use stability of film touch -control button. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model provides the plane structure schematic drawing of plug -in structure.

[0022] Figure 2 For Figure 1 The A-A cross section structure schematic drawing of plug -in structure shown in the figure.

[0023] Figure 3 The plane structure schematic drawing of film touch -control button provided by the utility model. DETAILED DESCRIPTION

[0024] The utility model will be described in detail below in combination with the drawings and examples, and the example of the example is 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 orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore 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 defined with "first", "second", "third" can explicitly or implicitly include 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 another definite provision and limitation, the terms "mount", "link", "connect", "fix", "arrange" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can through intermediate medium indirectly connect, also can be two element internal communication or two element mutual action relation. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0028] Embodiment one

[0029] As Figure 1 And 2 As shown in a kind of plug-in structure, for thin film touch button. The plug-in structure includes base film plug-in part 12 and thin film pin 22, the thin film pin 22 is arranged on the base film plug-in part 12;The plug-in structure further includes rigid needle foot 3, the rigid needle foot 3 includes needle foot connecting part 31 and needle foot plug-in part 32, the needle foot connecting part 31 is arranged on the thin film pin 22, the needle foot plug-in part 32 extends to the base film plug-in part 12 outside.

[0030] The plug-in structure of the utility model sets up the rigid needle foot 3 on the thin film pin 22, and the rigid needle foot 3 is extended to the base film plug-in part 12 outside to form the needle foot plug-in part 32, to replace the thin film pin 22 and the electric connector on control mainboard and carry out plug-in, and the rigidity of the rigid needle foot 3 is greater, and wear is less when being plugged with the electric connector, and can avoid the poor conduction in the process of multiple plug and unplug in factory test stage, to improve the use stability of the thin film touch button.

[0031] The rigid needle foot 3 can be metal sheet pin made of stainless steel sheet, iron sheet, copper sheet or aluminum sheet, first, the pin shape is punched out on the metal sheet by punching process, to form the rigid needle foot 3, then the rigid needle foot 3 of punching molding is fixed on the thin film pin 22;The needle foot connecting part 31 of the rigid needle foot 3 and the thin film pin 22 are welded or fixed with conductive glue, if fixed with conductive glue, then preferably fixed with ACF glue.

[0032] The thin film pin 22 has length direction and width direction, and the size of the thin film pin 22 in the length direction is greater than its size in the width direction.

[0033] The thin film pin 22 comprises a first pin layer 221 and a second pin layer 222, the first pin layer 221 is arranged on the base film insertion part 12, the second pin layer 222 is arranged on the first pin layer 221, and the width of the second pin layer 222 is greater than the width of the first pin layer 221.

[0034] Preferably, the first pin layer 221 is used to connect with the thin film capacitor of the thin film touch button, and the second pin layer 222 is used to connect with the rigid pin 3. The first pin layer 221 with smaller width is used to connect with the thin film capacitor, which can reduce the wiring space of the capacitor wiring, reduce the material cost, and meet the miniaturization requirement of the product. The second pin layer 222 with larger width is used to connect with the rigid pin 3, which can reduce the alignment difficulty between the thin film pin 22 and the rigid pin 3, and improve the success rate of the alignment connection.

[0035] Preferably, the first pin layer 221 is partially exposed outside the second pin layer 222 at the end away from the rigid pin 3, so as to facilitate the connection with the thin film capacitor; and the second pin layer 222 is partially exposed outside the rigid pin 3 at the end close to the exposed end of the first pin layer 221, so as to facilitate the observation of the alignment of the two side edges.

[0036] Preferably, the width of the pin connection part 31 is greater than the width of the pin insertion part 32.

[0037] The pin connection part 31 is used to connect with the thin film pin 22, and the pin insertion part 32 is used to insert with the electric connector. The pin connection part 31 with larger width is used to connect with the thin film pin 22, which can reduce the alignment difficulty between the thin film pin 22 and the rigid pin 3, and improve the success rate of the alignment connection. The pin insertion part 32 with smaller width is used to insert with the electric connector, which can meet the size of the insertion part of the existing electric connector, so that the size of the insertion part of the existing electric connector does not need to be changed after the pin connection part 31 with larger width is used to reduce the alignment difficulty.

[0038] Preferably, the width of the second pin layer 222 is equal to the width of the pin connection part 31, and the width of the first pin layer 221 is equal to the width of the pin insertion part 32.

[0039] In the embodiment, the first pin layer 221 is a silver paste pin layer, and the second pin layer 222 is a carbon paste pin layer. The thin film pins 22 and the rigid pins 3 are both multiple, and one rigid pin 3 corresponds to one thin film pin 22. Each thin film pin 22 is arranged on one side edge of the base film insertion part 12 in sequence, and the arrangement direction of each thin film pin 22 is perpendicular to the length direction.

[0040] Preferably, the pin connection part 31 is provided with a through hole structure 310, and the through hole structure 310 is filled with a conductive material 311, so as to improve the electrical connection area between the thin film pin 22 and the rigid pin 3 by using the conductive material 311 filled in the through hole structure 310, and reduce the resistance value between the two.

[0041] Embodiment two

[0042] As shown in the drawings, a thin film touch button includes the insertion structure of embodiment one. Figure 3

[0043] Specifically, the thin film touch button includes a base film layer 1 and a conductive thin film layer 2, and the conductive thin film layer 2 is arranged on the base film layer 1.

[0044] The base film layer 1 includes a base film main body part 11 and a base film insertion part 12, and the base film insertion part 12 is connected to one side of the base film main body part 11.

[0045] The conductive thin film layer 2 includes a thin film capacitor 21, a thin film trace 23, and a thin film pin 22, the thin film capacitor 21 and the thin film trace 23 are arranged on the base film main body part 11, and the thin film capacitor 21 is connected to the thin film pin 22 through the thin film trace 23.

[0046] In the embodiment, the thin film capacitor 21, the thin film trace 23, and the thin film pin 22 are all multiple, and one thin film capacitor 21 corresponds to one thin film trace 23 and one thin film pin 22; each thin film capacitor 21 is connected to the corresponding thin film pin 22 through the corresponding thin film trace 23. The thin film trace 23 is connected to the first pin layer 221, thereby realizing the electrical connection with the thin film pin 22, so that the thin film capacitor 21, the thin film trace 23, and the first pin layer 221 can be made of the same conductive thin film, such as being formed into different regions of the same silver paste thin film by silver paste silk screen printing, and then the second pin layer 22 and the rigid pin 3 are sequentially formed on the first pin layer 221.

[0047] Preferably, the base film layer 1 is a PET base film.

[0048] ​Finally, it needs to be explained 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, it should be understood by those skilled in the art that the technical solutions of the embodiments of the present application can still be modified or replaced equivalently, 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. An interconnect structure comprising a base film interconnect portion and a thin film lead arranged on the base film interconnect portion; characterized by, The plug-in structure further comprises a rigid pin, which comprises a pin connecting part and a pin plug-in part, the pin connecting part is arranged on the film pin, and the pin plug-in part extends out of the base film plug-in part.

2. Plug-in structure according to claim 1, characterized in that The film pin comprises a first pin layer and a second pin layer, the first pin layer is arranged on the base film plug-in part, the second pin layer is arranged on the first pin layer, and the width of the second pin layer is greater than that of the first pin layer.

3. Plug-in structure according to claim 1 or 2, characterized in that The width of the pin connecting part is greater than that of the pin plug-in part.

4. Plug-in structure according to claim 1 or 2, characterized in that The width of the second pin layer is equal to that of the pin connecting part, and the width of the first pin layer is equal to that of the pin plug-in part.

5. Plug-in structure according to claim 2, characterized in that The first pin layer is a silver paste pin layer, and the second pin layer is a carbon paste pin layer.

6. Plug-in structure according to claim 1, characterized in that The rigid pin is a metal sheet pin, and the pin connecting part is fixedly connected with the film pin by welding or conductive adhesive.

7. Plug-in structure according to claim 1, characterized in that The pin connecting part is provided with a through hole structure, and the through hole structure is filled with conductive material.

8. Plug-in structure according to claim 1, characterized in that The film pin and the rigid pin are both provided with a plurality of pin structures, and one rigid pin corresponds to one film pin.

9. A thin film touch key, characterized by, The plug-in structure of claim 1 is provided.

10. The thin film touch key of claim 9, wherein, The film touch key comprises a base film layer and a conductive film layer, and the conductive film layer is arranged on the base film layer. The base film layer comprises a base film main body part and a base film plug-in part, and the base film plug-in part is connected to one side of the base film main body part. The conductive film layer comprises a film capacitor, a film trace and a film pin, the film capacitor and the film trace are arranged on the base film main body part, and the film capacitor is connected with the film pin through the film trace.

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