TWM479451U - Embedded structure of touch panel - Google Patents

Description

Embedded structure touch panel

The present invention relates to a touch panel structure, and more particularly to a touch panel with an embedded structure.

The touch screen is combined with the electronic device, so that the electronic device such as a mobile phone, an MP3 or a portable computer does not need to be operated by a physical button, and only needs to be directly operated on the screen; thus, the possibility of adding more possibilities to the operation mode of the electronic device Instead of being limited to keyboard mode operations.

Touch screens include capacitive, resistive, optical and other touch sensing methods. Currently, the most widely used mobile handheld devices such as mobile phones and tablet computers are capacitive touch screens.

Please refer to FIG. 1 , which is a schematic structural view of a conventional capacitive touch screen, comprising a glass substrate 1 , a light shielding layer 2 disposed on a periphery of the glass substrate 1 , and a lead portion disposed on the light shielding layer 2 . 3 and a touch sensing layer 4 covering the glass substrate 1 and connected to the wire portion 3, wherein the touch sensing layer 4 is deposited by sputtering; the light shielding layer 2 is used to shield the wire portion 3, in order to maintain the appearance, it must have a certain thickness, and the thickness of the light shielding layer 2 is generally thicker than the touch sensing layer 4, so that the touch sensing layer 4 is easy to deposit at the boundary region 5 during sputtering deposition. In the case of uneven thickness, the problem of disconnection occurs.

The main purpose of the novel is to avoid the phenomenon that the touch sensing layer is broken due to uneven thickness.

In order to achieve the above object, the present invention provides a touch panel of an embedded structure, comprising a glass substrate, a light shielding layer, a touch sensing layer, and a wire portion disposed on the light shielding layer, the glass substrate includes a a display area and a placement groove formed on a periphery of the display area, the thickness of the light shielding layer is equal to the depth of the insertion groove, so that the light shielding layer is formed in the insertion groove and forms a plane together with the display area, The touch sensing layer is formed on the plane formed by the display area and the insertion groove and electrically connected to the lead portion.

According to the above description, the present invention is characterized in that the formation of the insertion groove is such that when the light shielding layer is disposed in the insertion groove, the display area forms a plane together with the display area, so that the touch sensing layer is formed on the plane. A uniform thickness can be generated on the display area and the light shielding layer to avoid the problem of disconnection and affect the electrical conduction characteristics.

Conventional technology

1‧‧‧ glass substrate

2‧‧‧ shading layer

3‧‧‧Wire Department

4‧‧‧ touch sensing layer

5‧‧‧ junction area

This new type

10‧‧‧ glass substrate

11‧‧‧ display area

12‧‧‧Into the slot

20‧‧‧Lighting layer

30‧‧‧ touch sensing layer

40‧‧‧Wire Department

50‧‧‧ plane

60‧‧‧Protective layer

Figure 1 is a schematic cross-sectional view of a prior art.

Figure 2 is a schematic cross-sectional view of the present invention.

3A to 3D are schematic views showing the flow of the manufacturing method of the present invention.

The detailed description and technical content of this new model are as follows:

The touch panel of the embedded structure includes a glass substrate 10, a light shielding layer 20, a touch sensing layer 30, and a light shielding layer 20 disposed on the light shielding layer 20, as shown in FIG. The wire substrate 40 includes a display area 11 and a placement groove 12 formed on a periphery of the display area 11, wherein the insertion groove 12 is formed by etching and has a depth of 6 μm to 15 μm. The thickness of the light shielding layer 20 is equal to the depth of the insertion groove 12, so that the light shielding layer 20 is formed in the insertion groove 12 and forms a plane 50 together with the display area 11. The touch sensing layer 30 is formed on the plane 50. And electrically connected to the lead portion 40. The light shielding layer 20 is a black matrix or a dark ink of a resin material, and the material of the touch sensing layer 30 is indium tin oxide (ITO) and aluminum zinc oxide. (AZO), indium zinc oxide (IZO) or gallium zinc oxide (GZO), furthermore, the material of the touch sensing layer 30 may be a polymer conductive material or a nano metal material, wherein the polymer conductive The material may be a polymer conductive material such as polyacetylene which is not doped with a hetero atom. PAC) or poly(p-phenylene vinylene, PPV), polymer conductive materials doped with nitrogen atoms, such as polypyrrole (PPY) or polyaniline (PANI), doped with sulfur atoms Polymer conductive materials such as poly(3,4-ethylenedioxythiophene) (PEDOT) or poly(styrenesulfonate, PPS), nano metal conductive The material may be nano gold, nano silver or nano copper; the material of the wire portion 40 is made of metal such as gold, silver or copper.

In addition, the touch panel of the embedded structure further includes a protective layer 60 covering the touch sensing layer 30 and the side of the lead portion 40 away from the glass substrate 10, thereby protecting the touch. The sensing layer 30 and the wire portion 40 are controlled to achieve an effect of avoiding oxidation. In addition, the thickness of the glass substrate 10 varies depending on the area of the glass substrate 10, such as when the size of the glass substrate 10 is 3.5 Å, the thickness is about 0.7 mm, and when the glass substrate 10 is increased to 20 Å. The thickness is increased to 1.1 mm to avoid a condition that is too thin and easily broken.

Please refer to "Figure 3A" to "Figure 3D" to further illustrate how the touch panel of the embedded structure is made:

Referring first to FIG. 3A, a glass substrate 10 of a suitable size is first selected, and a receiving groove 12 is formed on the periphery of the glass substrate 10. In the embodiment, the insertion groove 12 is formed by etching, and Defining a region surrounded by the insertion groove 12 to form a display region 11; and subsequently referring to FIG. 3B, a light shielding layer 20 having a thickness equal to the height of the insertion groove 12 is formed in the insertion groove 12 to make the light shielding layer The display area 11 and the display area 11 form a plane 50. Then, a touch sensing layer 30 and a lead portion 40 are formed on the plane 50, and the touch sensing layer 30 is electrically connected to the lead portion 40, such as The protective layer 60 is formed on the touch sensing layer 30 and the wire portion 40, and the protective layer 60 is away from the glass substrate 10 from the light shielding layer 20 and the touch sensing layer 30. The direction extends to cover as shown in Figure 3D.

In summary, the new model has the following characteristics:

1. The formation of the insertion groove is such that the light shielding layer is disposed in a plane with the glass substrate when the light shielding layer is disposed in the insertion groove, and the formation of the plane prevents the touch sensing layer from being broken when formed. The phenomenon arises.

Secondly, by the setting of the protective layer, the touch sensing layer and the lead portion can be prevented from contacting with other electronic components, and the degree of oxidation of the touch sensing layer and the lead portion can be reduced.

10‧‧‧ glass substrate

11‧‧‧ display area

12‧‧‧Into the slot

20‧‧‧Lighting layer

30‧‧‧ touch sensing layer

40‧‧‧Wire Department

50‧‧‧ plane

60‧‧‧Protective layer

Claims (9)

A touch panel with an embedded structure, comprising:
a glass substrate comprising a display area and a placement groove formed on a periphery of the display area;
a light shielding layer formed in the insertion groove, the thickness of the light shielding layer is equal to the depth of the insertion groove to form a plane together with the display area;
A touch sensing layer is formed on the plane formed by the display area and the insertion groove; and a wire portion disposed on the light shielding layer and electrically connected to the touch sensing layer. The touch panel with embedded structure according to claim 1, wherein the insertion groove has a depth of 6 micrometers to 15 micrometers. The touch panel with an embedded structure according to claim 1, wherein the light shielding layer is a black resin material or a dark ink. The touch panel of the embedded structure according to claim 1, wherein the touch sensing layer is made of a material selected from the group consisting of indium tin oxide, aluminum zinc oxide, indium zinc oxide, and gallium zinc oxide. Group. The touch panel of the embedded structure according to claim 1, wherein the material of the touch sensing layer is selected from the group consisting of a polymer conductive material and a nano metal material. The touch panel with an embedded structure according to claim 5, wherein the polymer conductive material is selected from the group consisting of a polymer conductive material not doped with a hetero atom, and a polymer conductive material doped with a nitrogen atom. And a group consisting of a polymer conductive material doped with a sulfur atom, the nano metal material being selected from the group consisting of nano gold, nano silver, and nano copper. The touch panel with an embedded structure according to claim 1, wherein the wire portion is made of metal. The touch panel with embedded structure according to claim 7, wherein the material of the wire portion is selected from the group consisting of gold, silver and copper. The touch panel of the embedded structure of claim 1, further comprising a protective layer covering the touch sensing layer and a side of the lead portion away from the glass substrate.