Capacitive screen and manufacturing method thereof

Abstract

The invention discloses a capacitive screen and a manufacturing method thereof. The capacitive screen comprises a first OCA layer, a second OCA layer, a first film layer and a second film layer, wherein the first film layer is located between the first OCA layer and the second OCA layer, and the second film layer is attached to the lower portion of the second OCA layer. The thickness of the first film layer and the thickness of the second film layer are 0.125 mm. On the basis, due to the fact that the thickness of the first film layer and the thickness of the second film layer are 0.125 mm, the combined capacitive screen is thinner than an existing capacitive screen and is easier to bend, the procedure of connecting an FPC and a sensor is omitted, the FPC and the sensor form a whole, the structure is simpler, and cost is lower. The invention further discloses a manufacturing method of the capacitive screen, which comprises the following steps: extending the two layers of films and designing the films into the shape of an FPC (Flexible Printed Circuit); and replacing a copper wire on an FPC (Flexible Printed Circuit) with a silicon trace on a sensor. On the basis, the capacitive screen manufactured by the method does not need to purchase an additional FPC (Flexible Printed Circuit) to be bound with a sensor to realize a conduction function.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitive screens, and in particular to a capacitive screen and a manufacturing method thereof. Background Art

[0002] Capacitive screens are becoming more and more common in daily life, market demand is gradually increasing, and competition is becoming increasingly fierce, which has led to the continuous development of capacitive products in the direction of higher efficiency and lower cost.

[0003] However, some capacitors are connected to sensors using FPC through ACF conductive adhesive, which has the disadvantages of complex structure and high cost. Summary of the invention

[0004] The object of the present invention is to provide a capacitive screen and a manufacturing method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a capacitive screen, comprising a first OCA layer, a second OCA layer, a first film layer and a second film layer; the first film layer is located between the first OCA layer and the second OCA layer, and the second film layer is attached to the bottom of the second OCA layer.

[0006] As a preferred technical solution of the present invention: the thickness of the first film layer and the second film layer is 0.125 mm.

[0007] To achieve the above object, the present invention provides a method for manufacturing a capacitive screen, comprising the following steps: S1: extending a first film layer and a second film layer so that the first film layer and the second film layer form a shape of an FPC; S2: replacing the copper wire on the FPC with a silver trace on a sensor.

[0008] By adopting the above technical scheme, the beneficial effect of the present invention is as follows: by utilizing the flexibility and conductivity of the sensor material itself, the sensor material is divided into a first OCA layer, a second OCA layer, a first film layer and a second film layer, so that the capacitive screen can achieve the same effect as the FPC, making the capacitive screen lower in cost and simple in structure, while ensuring the stability and durability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0010] In the figure: 1, first OCA layer; 2, second OCA layer; 3, first film layer; 4, second film layer. DETAILED DESCRIPTION

[0011] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent 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 are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0012] See also Figure 1 The present invention provides an embodiment: a capacitive screen, comprising a first OCA layer 1, a second OCA layer 2, a first film layer 3 and a second film layer 4; the first film layer 3 is located between the first OCA layer 1 and the second OCA layer 2, and the second film layer 4 is attached to the bottom of the second OCA layer 3. Furthermore, the thickness of the first film layer 3 and the second film layer 4 is 0.125 mm.

[0013] In addition, a method for manufacturing a capacitive screen includes the following steps: S1: extending the first film layer 3 and the second film layer 4 so that the first film layer 3 and the second film layer 4 form a FPC shape; S2: using the silver trace on the sensor to replace the copper wire on the FPC.

[0014] In summary, the original FPC of the capacitive screen is replaced by the film on the sensor. FPC is soft and resistant to bending, and the film on the sensor is also soft and easy to bend, but the thickness of the film on the sensor is 0.25mm, while the thickness of the FPC is 0.15mm. From the thickness point of view, the FPC is thinner and easier to bend. The present invention divides 0.25mm into 0.125+0.125mm thick films, making it thinner and easier to bend than FPC, and omits the process of connecting the FPC and the sensor, so that the FPC and the sensor form a whole, making the structure simpler and the cost lower; the sensor is composed of two layers of OCA layers and two layers of film layers, and the thickness of each material is 0.125mm. The two layers of film are extended and designed into the shape of FPC to meet the requirements of the external dimensions. The silver trace on the sensor replaces the copper wire on the FPC to meet the requirements of the conductive function. In this way, there is no need to purchase an additional FPC to bind with the sensor to achieve the conduction function.

[0015] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A capacitive touch screen, characterized in that: It comprises a first OCA layer (1), a second OCA layer (2), a first film layer (3) and a second film layer (4); The first film layer (3) is located between the first OCA layer (1) and the second OCA layer (2), and the second film layer (4) is attached below the second OCA layer (3).

2. A capacitive touch screen according to claim 1, characterized in that: The thickness of the first film layer (3) and the second film layer (4) is 0.125 mm.

3. A method for manufacturing a capacitive screen, The following steps are involved: S1: extending the first film layer (3) and the second film layer (4) so ​​that the first film layer (3) and the second film layer (4) form a shape of an FPC; S2: Use the silver trace on the sensor to replace the copper wire on the FPC.

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