TWI550483B - Anti-static touch panel - Google Patents

Description

Anti-static touch panel

The present invention relates to a touch panel, and more particularly to a touch panel having the function of electrostatic protection.

With the development of touch technology, existing touch panels are moving toward large size and thinness. At present, the domestic manufacturers have adopted the One Glass Solution (OGS) touch module as the mainstream, but as the touch module gradually develops toward the thin and light type, the sensor in the thin and light touch module (Sensor) The invention comprises a sensing electrode and a wire connected to the sensing electrode, and the wire is located at the periphery of the sensing electrode. If the touch module does not have proper electrostatic protection measures, the wire is easily broken by static electricity, resulting in wire breakage or poor conductivity, which affects the use of the machine after assembly and product life.

In view of this, the present invention is directed to an improvement of the prior art device and can meet the requirements of electrostatic protection.

In order to achieve the above-mentioned purpose, the technical means adopted by the present invention is to design an anti-static touch panel, comprising: a substrate, which is divided into a visible area and a wiring area, wherein the wiring area is disposed around the visible area; The wiring area includes a bonding region formed with a plurality of parallel contacts and at least a ground contact; and a ground conductive dielectric layer formed on a side of the substrate and at least grounded to the bonding region Point connection.

The anti-static touch panel further includes a sensing electrode layer and a plurality of wires; the sensing electrode layer is formed on the surface of the substrate and located in the visible region; the plurality of wires are formed on the The surface of the substrate is located in the wiring area, and one end of each of the plurality of wires is connected to the sensing electrode layer, and the other end of each of the plurality of wires is concentrated to the bonding region and connected to a corresponding contact.

In the above-mentioned anti-static touch panel, a metal frame may be further included to cover the peripheral sides of the substrate, and the ground conductive medium layer is also covered in the metal frame.

The antistatic touch panel described above may further include a liquid crystal display module board that is in contact with the surface of the substrate on which the sensing electrode layer is formed.

The anti-static touch panel may further include a protective plate that is in contact with the surface of the substrate on which the sensing electrode layer is formed, and the protective plate may be a glass substrate, and the substrate is The surface to be bonded may be formed with a light shielding layer corresponding to the wiring region of the substrate.

The antistatic touch panel described above may further include a liquid crystal display module board that is in contact with the opposite surface of the substrate on which the cover sensing electrode layer is formed.

In the above-mentioned anti-static touch panel, the ground conductive medium layer may be a metal material or a transparent conductive material, and the metal material is more selected from one of gold, silver and copper, and the transparent conductive material is selected from indium tin oxide or Zinc oxide, etc.

An advantage of the present invention is that the grounded conductive medium layer formed on the side of the substrate can assist the static electricity accumulated on the substrate to be quickly led to the ground, thereby avoiding damage to the substrate caused by electrostatic discharge; further, the grounded conductive medium layer Formed on the peripheral side of the substrate, the area of the wiring area is less occupied, thereby providing more favorable conditions for a Slim Type display, and also having a wider wiring space in the wiring area.

The technical means adopted by the present invention for achieving the purpose of creation are further explained below in conjunction with the drawings and preferred embodiments of the present invention.

Referring to FIG. 1 and FIG. 2 , the first preferred embodiment of the antistatic touch panel of the present invention is a single layer touch panel comprising a substrate 10 and a grounded conductive medium layer 100 . The substrate 10 is divided into a visible area 11 and a wiring area 12, and the wiring area 12 is disposed around the visible area 11. One surface of the substrate 10 is formed with a sensing electrode layer 110 corresponding to the visible region 11, and a plurality of wires 120 are formed in the corresponding wiring region 12. The wiring region 12 includes a bonding region 13 , and a plurality of parallel contacts 130 and ground contacts 130 a are formed on the surface of the substrate 10 on which the sensing electrode layer 110 is formed. One end of each of the plurality of wires 120 may be connected to the sensing electrode layer 110, and the other end of each of the plurality of wires 120 is concentrated to the land 13 and may be connected to a corresponding contact 130; the grounded conductive medium layer The 100 series is formed on the side of the substrate 10 and is connectable to the ground contact 130a of the land 13. It should be noted here that the touch panel in this embodiment has only one ground contact 130a. In the actual demand process, the touch panel can have multiple ground contacts 130a, and the plurality of ground contacts 130a are electrically connected to the ground conductive medium layer 100 at the same time to improve the reliability of the static electricity protection.

The ground conductive medium layer 100 may be a metal material or a transparent conductive material, and the metal material is more selected from one of gold, silver and copper. The transparent conductive material is selected from indium tin oxide or zinc oxide, but the material range is not implemented. Limited to the aforementioned materials.

As shown in FIG. 1 to FIG. 3 , the anti-static touch panel of the present invention may further include a light shielding layer 50 disposed in the wiring region of the substrate 10 and formed on any two opposite surfaces of the substrate 10 . On the surface. In this embodiment, the light shielding layer 50 is formed on the surface of the substrate 10 on which the sensing electrode layer 110 is formed, and the plurality of wires 120, the plurality of contacts 130, and the ground contact 130a are formed on the light shielding layer 50. The light shielding layer 50 is generally composed of an opaque material, for example, may be selected from a black photoresist material, a black resin, a black ink, or the like having other colors to cover a plurality of wires 120, a plurality of contacts on the light shielding layer 50. 130 and the grounding contact 130a are made visible to the operator to achieve an aesthetic effect. In practical applications, the light shielding layer 50 may be located on the other opposite surface of the substrate 10, and may also cover a plurality of wires 120, a plurality of contacts, and a ground contact 130a. The invention is not limited thereto.

As shown in FIG. 3 , the anti-static touch panel of the present invention may further include a metal frame 14 for covering the peripheral sides of the substrate 10 , wherein the ground conductive medium layer 100 can be Covered within the metal frame 14. When the touch panel is subjected to electrostatic breakdown during use, the grounded conductive medium layer 100 directly discharges static electricity from the metal frame 14 to further improve the antistatic capability of the antistatic touch panel.

The structure of the single-layer touch panel and the liquid crystal display module board 30 of the first preferred embodiment of the present invention is as shown in FIG. 4 , that is, the surface of the substrate 10 on which the sensing electrode layer 110 is formed may be The adhesive electrode layer 20 is attached to the upper surface of the liquid crystal display module board 30 by a bonding or bonding method, so that the sensing electrode layer 110 is located between the substrate 10 and the liquid crystal display module board 30. In addition, the metal frame 14 can be shared by the substrate 10 and the peripheral sides of the liquid crystal display module board 30.

Referring to FIG. 5, a second preferred embodiment of the anti-static touch panel of the present invention is a double-layer touch panel, which is substantially the same as the embodiment shown in FIG. 1, but further includes a protection board 40. The protective plate 40 is adhered to the surface of the substrate 10 on which the sensing electrode layers 110 are formed by a bonding or bonding method, so that the sensing electrode layers 110 are located on the protective plate 40 and Between the substrates 10. In this embodiment, the protective plate 40 is a glass substrate or a plastic substrate, and a surface of the protective plate 40 that is bonded to the substrate is formed with a light shielding layer 50 corresponding to the wiring region 12 of the substrate 10, as shown in FIG. The light shielding layer 50 can cover the wiring area 12 and the ground conductive medium layer 100. However, if the ground conductive medium layer 100 is made of a transparent conductive material, the light shielding layer 50 can cover the wiring area 12 and can cover only the wiring area 12. .

Referring to FIG. 6 , the second preferred embodiment of the present invention further includes a metal frame 14 for covering the substrate 10 and the surrounding sides of the protection board 40 , wherein the ground conductive The dielectric layer 100 can be wrapped within the metal frame 14.

Referring to FIG. 7 , the second preferred embodiment of the present invention is combined with a liquid crystal display module board 30 . The upper surface of the liquid crystal display module board 30 is framed or covered by an adhesive 20 . The bonding method is applied to the other surface of the substrate 10 on which the sensing electrode layer 110 is formed. The metal frame 14 can be shared between the substrate 10 and the liquid crystal display module board 30 and the side edges of the protection board 40.

According to the first and second preferred embodiments, the present invention mainly forms the grounded conductive medium layer 100 on the side of the substrate, and not only quickly discharges the static electricity accumulated on the substrate 10 to the ground end, so as to prevent static electricity. The damage to the substrate by the discharge is further because the grounded conductive medium layer 100 is directly formed on the peripheral side of the substrate 10, and the area of the wiring area 12 is less occupied, thereby providing more favorable conditions for the narrow bezel display. At the same time, the wiring area 12 can also have a relatively large wiring space, thereby avoiding signal interference between the plurality of wires 120 due to mutual proximity. In addition, the grounded conductive medium layer 100 can be covered in the metal frame 14. When the touch panel is subjected to electrostatic breakdown during use, the grounded conductive medium layer 100 directly discharges static electricity from the metal frame 14 to further improve Antistatic ability of anti-static touch panel.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical scope of the present invention. The present invention is not limited to any simple modifications, equivalent changes and modifications of the above embodiments.

10‧‧‧Substrate
11‧‧‧visible area
12‧‧‧ wiring area
13‧‧‧ junction area
14‧‧‧Metal border
20‧‧‧Adhesive
30‧‧‧LCD module board
40‧‧‧protection board
100‧‧‧ Grounded Conductive Dielectric Layer
110‧‧‧Induction electrode layer
120‧‧‧ wire
130‧‧‧Contacts
130a‧‧‧ Grounding contacts
50‧‧‧ shading layer

1 is a top plan view of a first embodiment of an antistatic touch panel of the present invention. 2 is a partially enlarged plan view showing a first embodiment of the antistatic touch panel of the present invention. 3 is a partial cross-sectional view showing a first embodiment of the antistatic touch panel of the present invention. 4 is a partial cross-sectional view showing the combination of the first embodiment of the antistatic touch panel of the present invention and the liquid crystal module panel. FIG. 5 is an exploded perspective view showing a second embodiment of the antistatic touch panel of the present invention. 6 is a partial cross-sectional view showing a second embodiment of the antistatic touch panel of the present invention. 7 is a partial cross-sectional view showing the combination of a second embodiment of the antistatic touch panel of the present invention and a liquid crystal module panel.

10‧‧‧Substrate

11‧‧‧visible area

12‧‧‧ wiring area

13‧‧‧ junction area

100‧‧‧ Grounded Conductive Dielectric Layer

110‧‧‧Induction electrode layer

120‧‧‧ wire

130‧‧‧Contacts

130a‧‧‧ Grounding contacts

Claims (9)

An anti-static touch panel comprises: a substrate divided into a visible area and a wiring area, wherein the wiring area is disposed around the visible area; wherein the wiring area comprises a bonding area, and the bonding area is formed by a plurality of parallel connections a grounding conductive medium layer formed on a side of the substrate and connected to the at least one grounding contact; and a metal frame covering the side edges of the substrate, wherein the A grounded conductive medium layer is also wrapped in the metal frame; wherein the grounded conductive medium layer is a metal material or a transparent conductive material. The antistatic touch panel of claim 1, further comprising: a sensing electrode layer formed on the surface of the substrate and located in the visible region; a plurality of wires formed on the surface of the substrate and located In the wiring area, one end of each of the plurality of wires is connected to the sensing electrode layer, and the other end of each of the plurality of wires is concentrated to the bonding region and connected to a corresponding one of the contacts. The antistatic touch panel of claim 2 further comprising a liquid crystal display module board that is in contact with the surface of the substrate on which the sensing electrode layer is formed. The antistatic touch panel of claim 2 further comprising a protective plate attached to the surface of the substrate on which the sensing electrode layer is formed. The antistatic touch panel of claim 2 further comprising a light shielding layer formed on one of the surfaces of the substrate and positioned in the wiring region. The antistatic touch panel of claim 4 further comprising a liquid crystal display module board that is in contact with the opposite surface of the substrate on which the sensing electrode layer is formed. The antistatic touch panel of claim 4, wherein the protective plate is a glass substrate, and a surface of the substrate that is bonded to the substrate is formed with a light shielding layer corresponding to the wiring region of the substrate. The antistatic touch panel of claim 1, wherein the metal material is one selected from the group consisting of gold, silver, and copper. The antistatic touch panel of claim 1, wherein the transparent conductive material is selected from the group consisting of indium tin oxide or zinc oxide.