TWM469543U - Touch sensing substrate - Google Patents

Description

Touch substrate

The present invention relates to a touch substrate, and more particularly to a touch substrate having the effect of reducing (or simplifying) the manufacturing process and low resistance value, and thereby effectively increasing the effect of the wiring space.

The touch panel has been widely used in the current life. By integrating the touch panel into the display panel, one can control the electronic device to execute the corresponding command through the touch operation of the display screen. At present, the conductive film of the touch panel is, for example, an indium tin oxide (ITO) film or a nano silver film, and the conductive film (or a transparent electrode layer) is formed on a transparent substrate, such as a glass plate. Or polyethylene terephthalate (PET) plate. Wherein the nanosilver film is composed of a plurality of nanowires.
The conventionally known conductive film (such as an indium tin oxide film or a nano-silver film) is formed on a transparent substrate by substantially: after the conductive film on the surface of the transparent substrate is subjected to photoresist, and then Baking the conductive film on the surface of the substrate, and after performing baking, performing an exposure and development process to form a transparent electrode layer having an electrode pattern on the surface of the substrate, wherein a nano-silver film is formed. For example, the transparent electrode layer on the surface of the substrate is composed of a plurality of nanowires; and then the transparent electrode layer on the surface of the substrate is sequentially cleaned, etched, cleaned, baked, etc., and then The transparent electrode layer on the surface of the substrate is screen-printed, and a wiring layer is electrically connected to the adjacent transparent electrode layer around the surface of the substrate, and then baked to obtain a touch substrate.
Although it is known that the touch substrate for manufacturing the touch panel can be manufactured through the above-described process steps, it extends another problem that the touch substrate must be manufactured through the above-mentioned multiple complicated steps. In addition, the low surface resistance of the nanosilver film is about 50 ohm/□, and the low surface resistance of the indium tin oxide film (ITO film) is about 150 ohms/□, and the surface resistance of the indium tin oxide film is low. , the conductivity will be better, but the thick film of the indium tin oxide film must be increased to cause the penetration of the indium tin oxide film to decrease, so the surface resistance of the indium tin oxide film affects the indium tin oxide. The thickness and penetration of the film, therefore, the smaller the surface resistance value, the higher the cost and the higher the technical threshold, so that the surface resistance value remains high.
In addition, since the wiring layer is formed by screen printing, the wiring space on the surface of the substrate is limited.
As mentioned above, the conventional disadvantages have the following disadvantages:
1. The manufacturing process is complicated and numerous;
2. Cost increase;
3. The wiring space is limited.
Therefore, how to solve the above problems and problems in the past, that is, the creators of the case and the relevant manufacturers engaged in this industry are eager to study the direction of improvement.

Therefore, in order to effectively solve the above problems, the main purpose of the present invention is to provide a touch substrate having a reduced (or simplified) manufacturing process and a low surface resistance value.
Another object of the present invention is to provide a touch substrate having an increased wiring space.
To achieve the above objective, the present invention provides a touch substrate for use in a touch device, and the touch substrate includes a substrate, at least one opaque sensing electrode layer, and an opaque electrode routing layer, the substrate having a a first surface and a second surface opposite to the first surface, the opaque sensing electrode layer is formed on the first surface of the substrate, and has a plurality of nano silver particles and a plurality of opaque sensing blocks, the opaque sensing The block is formed by arranging the nano silver particles in a grid shape, and the opaque electrode trace layer is formed on the periphery of the first surface of the substrate, and the adjacent connection corresponds to the opaque sensing electrode layer; The structural design of the touch substrate of the present invention can effectively achieve the effects of simplifying the process process and low surface resistance, and further effectively achieving the effect of increasing the wiring layout space.

1‧‧‧ touch device
10‧‧‧ touch substrate
101‧‧‧Substrate
1011‧‧‧ first surface
1012‧‧‧ second surface
11‧‧‧Opacity sensing electrode layer
111‧‧‧Neon Silver
113‧‧‧Opacity sensing block
115‧‧‧opaque, non-sensing block
13‧‧‧opaque electrode trace layer
14‧‧‧ touch area
15‧‧‧The surrounding area
16‧‧‧Grid
161‧‧‧Small grid
17‧‧‧Optical adhesive
d‧‧‧Line width
X‧‧‧ first direction
Y‧‧‧second direction

Figure 1A is a perspective view of a preferred embodiment of the present invention;
1B is a partial enlarged view of the first drawing of the present invention;
1C is another partial enlarged view of the first drawing of the present invention;
Figure 2 is another perspective view of a preferred embodiment of the present invention;
3 is a perspective view of a touch device according to a preferred embodiment of the present invention;
Figure 4 is a cross-sectional view of a touch device of the preferred embodiment of the present invention.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.
The present invention provides a touch substrate. Referring to FIG. 1A, a schematic view of a preferred embodiment of the present invention is shown, and reference is made to FIGS. 1B, 3, and 4; the touch substrate 10 is applied to a In the touch device 1 (or the touch panel), the touch substrate 10 of the present invention can be applied to various touch devices 1 of a stacked structure, such as GFF (Glass-Film-Film) and G1F ( Glass-Film), GG (Glass-Glass), etc., that is, the touch substrate 10 is replaced with a substrate 101 on which a sensing electrode (such as an indium tin oxide film or a nano-silver film) is formed on the touch device 1. (such as polyethylene terephthalate or glass).
In addition, the touch substrate 10 includes a substrate 101, at least one opaque (but optionally permeable or non-transmissive) sensing electrode layer 11 and an opaque layer (but may be transparent or opaque). Any of the electrode wiring layers 13, the substrate 101 is made of a flexible material, and the substrate 101 of the preferred embodiment is described by polyethylene terephthalate (PET), but The substrate 101 has a first surface 1011, a second surface 1012 opposite to the first surface 1011, a touch area 14 and a peripheral area 15. The touch area 14 is located on the first surface 1011. The central area 15 is located outside the touch area 14 .
Furthermore, the opaque sensing electrode layer 11 is formed on the first surface 1011 of the substrate 101, and has a plurality of nano silver particles 111 and a plurality of opaque layers (but may be selected to be transparent or non-transparent) In the sensing block 113, the opaque sensing blocks 113 are formed by arranging the nano silver particles 111 in a grid shape, that is, a photosensitive nano silver film is formed on the substrate 101 by chemical sintering. The first surface 1011 is then sequentially exposed and developed to form the opaque sensing blocks 113 in a grid shape on the touch area 14 of the first surface 1011 (as indicated in FIG. 1A or 2). The virtual frame portion of 113); in short, the opaque sensing electrode layer 11 is formed on the first surface 1011 of the substrate 101.
In addition, the diameter of each of the nano silver particles 111 is between several nanometers and several tens of nanometers, and the line width d of the mesh 16 in the opaque sensing block 113 is between 1 μm and 10 μm. The preferred embodiment is illustrated by a preferred 7 μm. And each of the small grids 161 in the grid 16 in the opaque sensing block 113 is illustrated in a diamond shape, but is not limited thereto, and may be selected as a rectangle or other shapes to change the transmittance. That is, the transmittance is changed by the shape of the small mesh 161; therefore, in a specific implementation, the user can adjust the grid 16 of the opaque sensing electrode layer 11 according to the required surface resistance value and the transmittance. The line width d is thick, and the shape of the small mesh 161 in the grid 16 is changed to achieve a low surface resistance value (about 25 ohms/□) and a high light transmittance.
Continuing to refer to FIGS. 1A, 1B, and 2, the opaque sensing blocks 113 have an opaque (but may be permeable or non-transmissive) adjacent to each other without an inductive block 115, such opaque The non-sensing block 115 is formed by arranging a plurality of nano silver particles in a grid shape, that is, the opaque non-sensing blocks 115 are formed in a grid shape on the touch area 14 of the first surface 1011 (eg, The imaginary opaque sensing block 113 and the adjacent opaque sensing block 113 are unpowered. The sexual connection, in other words, is that the opaque non-sensing block 115 has no current passing through, so that it does not have the effect of sensing electrodes. The opaque non-sensing blocks 115 are used to prevent the opaque sensing block 113 from being easily observed, thereby effectively achieving a balanced visual effect. The opaque non-sensing block 115 and the adjacent opaque sensing block 113 of the preferred embodiment are disconnected by 7 μm (as shown in FIG. 1C) to reach an electrically non-electrical connection, but In the specific implementation, the distance of the above disconnection is not limited to 7 μm, and the user can make appropriate adjustments according to the visual sense and the sensitivity of the sensing in advance, and the first and foremost.
In the preferred embodiment, the plurality of opaque sensing blocks 113 are formed on the first surface 1011 of the substrate 101 in a first direction X (ie, the X-axis direction) (as indicated by the reference numeral 113 in FIG. 1A). The frame portion is described. However, in the implementation of the present invention, the second opaque sensing block 113 may be formed in the second direction Y (ie, the Y-axis direction) as shown in FIG. On a surface 1011 (such as the dashed portion of the reference numeral 113 in the second figure), or as shown in FIGS. 3 and 4, the two substrates 101 of the touch device 1 are respectively formed in the first direction X and the second direction Y. There is an opaque sensing block 113 with an optical glue 17 (such as OCR) between the two substrates.
Furthermore, the opaque electrode trace layer 13 is formed on the periphery of the first surface 1011, and the adjacent connection corresponds to the opaque sensing electrode layer 11, that is, the opaque electrode trace layer 13 is formed on the first surface 1011. The peripheral area 15 is connected to the opaque sensing electrode layer 11 corresponding to the touch area 14.
Therefore, through the design of the touch substrate 10, the effect of simplifying the process process and the low surface resistance value is effectively achieved, and the effect of increasing the wiring layout space is effectively achieved.
As mentioned above, this creation has the following advantages over the prior art:
1. It has the effect of reducing (or simplifying) the manufacturing process and the low surface resistance value;
2. It has the effect of increasing the wiring space.
According to the above, it is only a preferred embodiment of the present invention, but the features of the present invention are not limited thereto, and any changes or modifications that can be easily considered by those skilled in the art can be easily changed. It should be covered in the scope of the patent application of the following creations.

10‧‧‧ touch substrate

101‧‧‧Substrate

1011‧‧‧ first surface

1012‧‧‧ second surface

11‧‧‧Opacity sensing electrode layer

113‧‧‧Opacity sensing block

115‧‧‧opaque, non-sensing block

13‧‧‧opaque electrode trace layer

14‧‧‧ touch area

15‧‧‧The surrounding area

16‧‧‧Grid

161‧‧‧Small grid

X‧‧‧ first direction

Claims (7)

A touch substrate includes:
a substrate having a first surface and a second surface opposite the first surface;
At least one opaque sensing electrode layer is formed on the first surface of the substrate, and has a plurality of nano silver particles and a plurality of opaque sensing blocks, wherein the opaque sensing blocks are meshed by the nano silver particles And an opaque electrode routing layer is formed on the periphery of the first surface of the substrate, and the adjacent connections correspond to the opaque sensing electrode layer. The touch substrate of claim 1, wherein the opaque sensing blocks have an opaque non-sensing block adjacent to each other, and the opaque non-sensing blocks are made up of a plurality of nano silver particles. The lattice arrangement is formed, and the opaque non-sensing blocks are not electrically connected to the adjacent opaque sensing blocks. The touch substrate of claim 2, wherein the opaque sensing blocks are formed on the first surface of the substrate in a first direction. The touch substrate of claim 2, wherein the opaque sensing blocks are formed on the first surface of the substrate in a second direction. The touch substrate of claim 1, wherein the substrate is a polyethylene terephthalate (PET). The touch substrate of claim 1, wherein the substrate is made of a flexible material. The touch substrate of claim 1, wherein the diameter of each nano silver particle is between several nanometers and several tens of nanometers.