TWM453898U - High transmittance thin and lightweight projection type capacitor touch panel structure - Google Patents

Description

High penetration thin lightweight projection capacitive touch screen structure

This creation is about touch panel structure, especially a high penetration thinned projected capacitor structure.

Touch panels are used in a wide variety of applications, such as mobile phones, tablets, and GPS. Because the interface is easy to use, durable, and inexpensive, the market continues to grow.

Most GFF projected capacitive touch panels on the market currently use a glass paste two-layer conductive film method. As shown in FIG. 1 , the conventional GFF projected capacitive screen 100 includes a first glass substrate 110 , a decorative layer 120 , a first optical germanium layer 130 , a second optical germanium layer 132 , a first metal conductive layer 140 , and a second metal conductive layer . 142. A first indium antimony oxide film 150 and a second indium antimony oxide film 152. In this method, the glass substrate 110 and the first and second indium oxide tantalum films 150 and 152 are attached to the first and second optical adhesives 130 and 132, which not only has a complicated manufacturing process, but also has a large problem of material and yield. Increase production costs.

It can be seen that the above existing touch panel obviously has inconveniences and defects, and needs to be further improved. In order to solve the above problems, the relevant fields have not exhausted their efforts to seek solutions, but the methods that have not been applied for a long time have been developed. Therefore, how to effectively simplify the process and increase the yield is one of the current important research and development topics, and it has become an urgent target for improvement in related fields.

Therefore, the creators of this creation need to conceive a new technology to improve their problems.

Therefore, the purpose of the present invention is to solve the above-mentioned problems in the prior art. In the present invention, a high-transmission thin lightweight projection capacitive touch screen structure is proposed, which aims to decorate a transparent composite substrate of a single piece of PMMA+PC. The coating of the metal conductive layer does not need to provide the indium oxide ruthenium film to be bonded to the optical glue, thereby reducing the cost of the raw material and reducing the thickness of the touch panel, thereby making the product thinner. It does not need to be bonded with any optical glue to simplify the process and reduce production costs. The anti-reflective layer 250 is directly bonded under the metal conductive layer to simplify the process and increase the yield. And a transparent composite substrate of PMMA+PC and a metal conductive layer are coated to reduce the thickness of the touch panel.

In order to achieve the above purpose, the present invention proposes a high-throughput thin lightweight projection capacitive touch screen structure, comprising: a transparent composite substrate with protection and electrical insulation function; a decorative layer located on the periphery of one side of the transparent composite substrate a transparent conductive layer located in the decorative layer and the transparent composite substrate region not covered by the decorative layer; and a metal conductive layer coated on the transparent conductive layer region covered by the decorative layer, and the transparent conductive layer Contact; the conductive layer of the metal is provided with an associated conductive circuit.

The features of the present invention and its advantages can be further understood from the description below, and please refer to the attached drawings when reading.

In view of the structural composition of the case, and the functions and advantages that can be produced, in conjunction with the drawings, a preferred embodiment of the present invention is described in detail below.

Please refer to Figure 2, the high penetration thin lightweight projection capacitive touch screen structure of this creation, including:

A transparent composite substrate 210 has protection and electrical insulation functions. Preferred is a two-layer composite substrate made of polymethylmethacrylate (PMMA) plus polycarbonate (PC).

A decorative layer 220 is located on a periphery of one of the faces of the transparent composite substrate 210. The decorative layer 220 is formed by printing ink for use as a decoration.

A transparent conductive layer 230 is applied to the decorative layer 220 and a transparent composite substrate region not covered by the decorative layer 220. The touch circuit is disposed in the transparent conductive layer 230 during manufacture. The material of the transparent conductive layer may be, for example, indium tin oxide (ITO) or other highly transparent conductive metal. The transparent conductive layer is directly applied to the decorative layer 220 and the transparent composite substrate region not covered by the decorative layer 220 by coating, without using a conventional optical adhesive. Therefore, the thickness of the entire touch screen can be reduced, and the light transmission characteristics are good.

A metal conductive layer 240 is coated on the transparent conductive layer 230 covered by the decorative layer 220 and is in contact with the transparent conductive layer 230. The metal conductive layer 240 is provided with an associated conductive circuit, which is mainly connected to the end point of the touch circuit on the transparent conductive layer 230, and then guided to the relevant processing device.

An anti-reflective layer 250 is bonded to the metal conductive layer 240 and the transparent conductive layer 230, and is basically composed of a transparent material. The anti-reflective layer 250 is used to reduce the reflection of the incident light, so that the incident light can effectively penetrate the transparent conductive layer 230 and achieve the purpose of protecting the touch circuit.

As shown in FIG. 3, an exploded view of the present invention is shown, and the structural outline of the illustration is not intended to limit the scope of the present creation.

The structure of the present invention is applied to the structure of the touch panel. Therefore, in the capacitive touch circuit, only a plurality of sets of touch circuits are designed in the transparent conductive layer 230, and the touch circuits are electrically conductive with the metal. The layers 240 are connected, and the metal conductive layer 240 is further connected to other components to form a plurality of touch circuits.

The present invention has the following advantages over the prior art: (1) coating the decorative layer 220 and the transparent conductive layer 230 on the transparent composite substrate 210 of the single piece of PMMA+PC, without using an indium tin oxide film and an optical adhesive The bonding reduces the cost of the raw materials, simplifies the process, and reduces the thickness of the touch panel, thereby making the product thinner. (2) directly bonding the anti-reflective layer 250 under the metal conductive layer 240, simplifying the process and increasing the process. Yield; In summary, the humanized design of this case is quite in line with actual needs. The specific improvement of the existing defects is obviously a breakthrough improvement advantage compared with the prior art, and it has an improvement in efficacy and is not easy to achieve. The case has not been disclosed or disclosed in domestic and foreign literature and market, and has complied with the provisions of the Patent Law.

The detailed description above is a detailed description of one of the possible embodiments of the present invention, and the embodiment is not intended to limit the scope of the patents, and the equivalent implementations or modifications that are not included in the spirit of the present invention should be included in The patent scope of this case.

110‧‧‧ glass substrate

120,220‧‧‧decorative layer

130‧‧‧First optical layer

132‧‧‧Second optical layer

140‧‧‧First metal conductive layer

142‧‧‧Second metal conductive layer

150‧‧‧First Indium Tin Oxide Film

152‧‧‧second indium tin oxide film

210‧‧‧Transparent composite substrate

230‧‧‧Transparent conductive layer

240‧‧‧Metal conductive layer

250‧‧‧Anti-reflective layer

Figure 1 is a schematic diagram of a prior art.

Figure 2 is a schematic diagram of the structure of the creation.

Figure 3 is an exploded view of the explosion of the creation.

210‧‧‧Transparent composite substrate

220‧‧‧Decorative layer

230‧‧‧Transparent conductive layer

240‧‧‧Metal conductive layer

250‧‧‧Anti-reflective layer

Claims (8)

A high-throughput thin lightweight projection capacitive touch screen structure comprises: a transparent composite substrate with protection and electrical insulation function; a decorative layer located on a periphery of one side of the transparent composite substrate; and a transparent conductive layer located at the decoration a layer and a transparent composite substrate region not covered by the decorative layer; and a metal conductive layer coated on the transparent conductive layer region covered by the decorative layer and in contact with the transparent conductive layer; the metal conductive layer is disposed on the metal conductive layer Related conductive circuits. The high-transmission thin lightweight projection capacitive touch screen structure according to claim 1, wherein an anti-reflection layer is further disposed on the metal conductive layer and the transparent conductive layer, and is composed of a transparent material. The anti-reflection layer is used to reduce the reflection of the incident light, so that the incident light can effectively penetrate the transparent conductive layer and has the purpose of protecting the touch circuit. The high penetration thin lightweight projection capacitive touch screen structure according to claim 1, wherein the transparent composite substrate is made of polymethylmethacrylate (PMMA) and polycarbonate (Polycarbonate, PC). A two-layer composite substrate composed of two layers. The high penetration thin lightweight projection capacitive touch screen structure according to claim 1, wherein the decorative layer is formed by printing ink for decoration. High penetration, thin and lightweight as described in item 1 of the patent application A projected capacitive touch screen structure, wherein the transparent conductive layer is used to configure a touch circuit. The high penetration thin lightweight projection capacitive touch screen structure according to claim 1, wherein the transparent conductive layer is made of indium tin oxide (ITO) or other highly transparent conductive metal. The high-throughput thin lightweight projected capacitive touch screen structure according to claim 1, wherein the transparent conductive layer is directly coated on the transparent composite substrate by printing, spraying or other coating methods. The high-transmission thin lightweight projection capacitive touch screen structure according to claim 5, wherein the metal conductive layer is mainly connected to an end point of the touch circuit on the transparent conductive layer, and then guided to relevant processing. In the device.