TWM507014U - Touch panel having relatively narrow trace area - Google Patents

Abstract

A touch panel includes a trace area, wherein the trace area includes a grounding layer, a first insulating layer configured on the grounding layer, and a first sensor trace configured on the first insulating layer.

Description

Touch panel with relatively narrow routing area

The present invention relates to a touch panel having a relatively narrow routing area, and more particularly to a wiring area including a ground layer, a first insulating layer disposed on the ground layer, and a setting a touch panel of the first sensor trace on the first insulating layer.

In the development trend of the touch panel, if the size of the trace area of the touch panel is narrower than the conventional design size, the user can obtain a touch panel having a relatively wide touch screen. This is a new trend that has been welcomed by users.

The first figure is a schematic circuit diagram of a wiring area and a sensor of a conventional touch panel of a glass-film-film (GFF) structure. In the first figure, the touch panel 1 includes a trace area 10 and a plurality of sensors, wherein each of the sensors includes a transmitter 11 and a receiver 12 . The routing area 10 includes a plurality of first sensor traces 13 , a plurality of second sensor traces 14 and a plurality of ground traces 15 ; each of the first sensors The line 13 is a transmitter trace, one end of which is connected to a transmitter 11, and each of the second sensor traces 14 is a receiver trace, and one end thereof is connected to a receiver 12. The transmitter traces described above are routed to the receiver, and the two can be collectively referred to as sensor traces. The transmitter 11 and the receiver 12 in the first figure can also be interchanged with each other. That is, in a different conventional embodiment, it may have a plurality of (receiver) 11 and a plurality of (transmitters) 12 as shown in the first figure; at this time, the plurality of first senses The detector trace 13 is a plurality of receiver traces, and the plurality of second sensor traces 14 are a plurality of emitter traces.

Since the touch panel having a relatively narrow bezel (ie, a routing area) can be provided with a relatively wide touch screen, it has been increasingly popular among users. How to design a touch panel with a relatively narrow trace area is a question worth pondering.

For the sake of his position, the creator, based on the lack of prior art, is thinking and improving the idea of creation, and finally can create the "touch panel with relatively narrow routing area" in this case.

The main purpose of the present invention is to provide a touch panel having a first trace layer and a second trace layer, and the trace layers are located in different vertical horizontal trace areas. Since the touch panel has a narrower border, a relatively wide touch screen can be provided.

Another main purpose of this creation is to provide a touch surface. The board includes a trace area, and the trace area includes a first trace layer, including a first substrate, a ground layer disposed on the first substrate, an insulating layer disposed on the ground layer, and a first sensor trace disposed on the insulating layer, and a second trace layer parallel to the first trace layer, including a second substrate, a first ground trace, and a second a sensor trace, wherein the first ground trace and the second sensor trace are disposed on the second substrate, and the first ground trace and the second sensor trace are located at the ground layer In one of the projections on the space, the ground layer is used to isolate the first and second sensor traces to avoid interference between the first and second sensor traces.

Another main object of the present invention is to provide a touch panel including a routing area, the routing area including a ground layer having a first side and a second side, a first insulating layer disposed on the first One side, a first sensor trace, a first ground trace, wherein the first sensor trace and the first ground trace are disposed on the first insulating layer, and a second insulating layer, Provided on the second side, a second sensor trace, and a second ground trace, wherein the second sensor trace and the second ground trace are disposed on the second insulating layer, and The second insulating layer is located in a projection of the first insulating layer in space.

A main purpose of the present invention is to provide a touch panel including a trace area including a ground layer, a first insulating layer disposed on the ground layer, and a first sensor. Line Placed on the first insulating layer.

A further main object of the present invention is to provide a touch panel comprising a routing area having a cross section including a first routing layer, a second routing layer, and An insulating layer is disposed between the first and second trace layers.

In order to make the above objects, features, and advantages of the present invention more comprehensible, the preferred embodiments are described below, and the accompanying drawings are described in detail as follows:

1‧‧‧Side two-piece film structure touch panel

10‧‧‧Wiring area

11‧‧‧Sensor transmitter

12‧‧‧Sensor receiver

13‧‧‧First sensor trace

14‧‧‧Second sensor trace

15‧‧‧ Grounding trace

2‧‧‧Two-piece thin film structure touch panel

21‧‧‧protective glass

22‧‧‧First substrate

23‧‧‧second substrate

24‧‧‧ITO sensor

3‧‧‧ The touch panel of the first preferred embodiment of the present invention

30‧‧‧Wiring area

31‧‧‧Insulation

32‧‧‧ Grounding layer

4‧‧‧Side monolithic glass structure touch panel

40‧‧‧Wiring area

41‧‧‧Metal Bridge

42‧‧‧Protective film

5‧‧‧ The second preferred embodiment of the touch panel of the present invention

50‧‧‧Wiring area

511‧‧‧First insulation

512‧‧‧Second insulation

First: It is a schematic circuit diagram showing a wiring area and a sensor of a conventional two-piece film structure touch panel.

Fig. 2(a) is a schematic cross-sectional view showing a wiring area and a sensor of a conventional two-piece film structure touch panel.

FIG. 2(b) is a cross-sectional view showing the wiring area and the sensor of the touch panel of the two-piece film structure according to the first preferred embodiment of the present invention.

Fig. 3(a) is a schematic cross-sectional view showing a wiring area and a sensor of a conventional one-piece glass structure touch panel.

FIG. 3(b) is a cross-sectional view showing the wiring area and the sensor of the touch panel of the monolithic glass structure according to the second preferred embodiment of the present invention.

The second figure (a) is a schematic cross-sectional view showing a wiring area and a sensor of a conventional two-piece film structure touch panel. In the second embodiment (a), the touch panel 2 includes a cover glass 21, a first substrate 22 and a second substrate 23, a plurality of ITO sensors 24, and a plurality of first sensings. The device traces 13, a plurality of second sensor traces 14 and a plurality of ground traces 15. As shown in the second diagram (a), a plurality of ITO sensors 24 are disposed in each of the central regions of the first substrate 22 and the second substrate 23. A trace area 10 is shown on the right side of the second diagram (a). One embodiment of the routing area 10 is an annular region that surrounds the perimeter of the touch panel 2 (see the first figure). The routing area 10 also includes embodiments of other non-annular areas. For example, the routing area 10 is a "ㄩ" shape or the like. In the routing area 10, a first routing layer and a second routing layer are included. The first wiring layer includes the first substrate 22 and a plurality of first sensor traces 13 and a plurality of ground traces 15 disposed on the first substrate 22 . The second wiring layer includes the second substrate 23 and a plurality of second sensor traces 14 and a plurality of ground traces 15 disposed on the second substrate 23. As described above, each of the first sensor traces 13 is a transmitter trace, and each of the second sensor traces 14 is a receiver trace, and each of the emitter traces and each of the emitter traces The receiver is wired and can be called a sensor trace. As mentioned above, in a different embodiment, it is also possible that the first sensor trace 13 is a transmitter trace and the second sensor trace 14 is a receiver. Traces. However, to avoid interference of each of the sensor traces to other sensor traces above or below it, the first trace layer in the trace area 10 is as shown in the second diagram (a). The second trace layer below each of the sensor traces 13/14 must be left in neutral. Similarly, the first trace layer above each of the sensor traces 13/14 of the second trace layer in the trace region 10 must also be. Therefore, a lot of valuable space in the routing area 10 is wasted and needs to be improved.

The second figure (b) is a schematic cross-sectional view of the wiring area and the sensor of the touch panel of the two-piece film structure according to the first preferred embodiment of the present invention. In the second embodiment (b), the touch panel 3 includes a protective glass 21, a first substrate 22 and a second substrate 23, a plurality of ITO sensors 24, and a plurality of first sensor traces 13 And a plurality of second sensor traces 14, a plurality of ground traces 15, a plurality of insulating layers 31 and a plurality of ground layers 32. The second figure (b) is different from the second figure (a) in that a plurality of ground layers 32 are disposed on the first substrate 22 in the first wiring layer, and each of the ground layers 32 is disposed on each of the ground layers 32. An insulating layer 31 is disposed on the insulating layer 31, and the plurality of first sensor traces 13, the plurality of second sensor traces 14 and the plurality of ground traces 15 may be disposed as needed. . And because the shielding of the ground layer can block the interference between the sensor traces 13/14 above and below the ground layer 32; therefore, each of the sensor traces disposed above the insulating layer 31 The relative position of the second substrate 23 of the second wiring layer below the 13/14 has no need to be left empty files. In the second figure (b), above the insulating layer 31, although there is a gap, if necessary, the sensor line 13/14 may be disposed in the space, or the grounding line 15 Either. Therefore, in the first trace layer and the second trace layer in the second figure (b), the sensor trace 13/14 or the ground trace 15 may be filled according to actual application requirements. Not to waste any space. Therefore, the trace area 30 in the second diagram (b) is significantly narrower than the trace area 10 in the second diagram (a), which is advantageous for setting one and, for example, the second diagram (a). Compared with the touch panel 2 shown, the touch panel 3 has a wider touch screen.

The third figure (a) is a schematic cross-sectional view of a trace area and a sensor of a conventional one-piece glass structure touch panel. In the third figure (a), the touch panel 4 includes a protective glass 21, a plurality of ITO sensors 24, electrical connection units of a plurality of sensors, a plurality of first sensor traces 13, and a plurality of Two second sensor traces 14 and a plurality of ground traces 15. As shown in the third figure (a), an electrical connection unit of the plurality of sensors is disposed in a central area below the protective glass 21 for electrically connecting two internal components of the sensor (for example, one Between the first driving line and a second driving line). The inside of each of the electrical connection units is an over coat (CO) 42 and the outside is a metal bridge 41. A trace area 40 is displayed on the left side of the third diagram (a). One embodiment of the routing area 40 is an annular region that surrounds the periphery of the touch panel 4 (refer to the trace area 10 of the first figure). As mentioned above, the routing area 10 also includes other non-annular areas. Example. In the routing area 40, a routing layer is included. The routing layer has a plurality of first sensor traces 13, a plurality of second sensor traces 14 and a plurality of ground traces 15. As described above, each of the first sensor traces 13 is a transmitter trace, and each of the second sensor traces 14 is a receiver trace, and each of the emitter traces and each of the emitter traces Receiver traces can be collectively referred to as sensor traces. As previously mentioned, in a different embodiment, it is also possible that the first sensor trace 13 is a transmitter trace and the second sensor trace 14 is a receiver trace. As shown in the third diagram (a), in the routing area 40, since there is only one trace layer, and each of the sensor traces 13/14 and each of the ground traces 15 are adjacent to each other, The trace area 40 occupies a relatively wide area. Therefore, a lot of valuable space in the routing area 40 is wasted and needs to be improved.

The third figure (b) is a schematic cross-sectional view of the wiring area and the sensor of the touch panel of the monolithic glass structure according to the second preferred embodiment of the present invention. In the third diagram (b), the touch panel 5 includes a protective glass 21, electrical connection units of a plurality of sensors, a plurality of ITO sensors 24, a plurality of first sensor traces 13, and a plurality of The second sensor traces 14, the plurality of ground traces 15, the plurality of first insulating layers 511, the plurality of ground layers 32, and the plurality of second insulating layers 512. The inside of each of the electrical connection units is an over coat (CO) 42 and the outside is a metal bridge 41. A trace area 50 is shown on the right side of the third diagram (b). The difference between the third figure (b) and the third figure (a) is because each of the lines in the layer The first insulating layer 511 is disposed on a first side of the ground layer 32, and the plurality of first sensor traces 13 and the plurality of second sensors are disposed on the first insulating layer 511 as needed. The plurality of first sensor traces 13 and the plurality of second sensor traces may be disposed on the second insulating layer 512 as needed. 14 and a plurality of ground traces 15 of the plurality. And because of the shielding of the ground layer 32, each of the sensor traces 13/14 located above the first insulating layer 511 and below the second insulating layer 512 can block each other from interfering with each other. Therefore, the routing area 50 is relatively narrow compared to the routing area 40 of the touch panel 4 in the third diagram (a), which is advantageous for providing a touch panel having a wider touch screen. 5.

Example:

A touch panel comprising a trace area, the trace area comprising: a first trace layer comprising: a first substrate; a ground layer disposed on the first substrate; an insulating layer disposed On the ground layer; and a first sensor trace disposed on the insulating layer; and a second trace layer parallel to the first trace layer, comprising: a second substrate; a first Grounding trace; and a second sensor trace, wherein the first ground trace and the second sensor trace are disposed on the second substrate, where the first ground trace and the second sensor trace are located The ground layer is projected in a space, and the ground layer is used to isolate the first and the second sensor traces to avoid interference between the first and second sensor traces.

2. The touch panel of embodiment 1, wherein the first trace layer further comprises a second ground trace disposed on the insulating layer, wherein the first ground trace is located on the second ground trace Directly below, the second sensor trace is located directly below the first sensor trace, and when the first ground trace is directly below the first sensor trace, the first The second sensor trace is located directly below the second ground trace.

A touch panel comprising a routing area, the routing area comprising: a ground layer having a first side and a second side; a first insulating layer disposed on the first side; a first a first grounding trace, wherein the first sensor trace and the first ground trace are disposed on the first insulating layer; and a second insulating layer is disposed on the second side a second sensor trace; and a second ground trace, wherein the second sensor trace and the second ground trace are disposed on the second insulating layer, and the second insulating layer is located The first An insulating layer is projected in one of the spaces.

4. The touch panel of embodiment 3, wherein the ground layer is configured to isolate one of the first sensor traces generated by the first sensor trace to the second sensor trace. Disturbing a second interference generated by the second signal generated by the second sensor trace to the first sensor trace, when the second ground trace is located at the first ground trace The second sensor trace is located directly below the first sensor trace, and the second sense is when the second ground trace is directly below the first sensor trace The detector trace is located directly below the first ground trace.

A touch panel comprising a trace area, the trace area comprising: a ground layer; a first insulating layer disposed on the ground layer; and a first sensor trace disposed on the first On an insulating layer.

The touch panel of the embodiment 5 is a touch panel of a glass-film-film (GFF) structure, wherein the routing area further comprises a first and a second wiring layer. The first wiring layer includes a first substrate, the ground layer disposed on the first substrate, the first insulating layer, a first ground trace disposed on the insulating layer, and the first sensing The second trace layer includes a second substrate, a second ground trace and a second sensor trace, and the second ground trace and the second sensor trace are disposed on the second trace The grounding layer is configured to isolate the first and the second The sensor is routed to avoid interference between the first and the second sensor traces, and the second ground trace and the second sensor trace are located in a space projection of the ground layer The second sensor trace is located directly below the first sensor trace when the second ground trace is directly under the first ground trace, and when the second ground trace is The second sensor trace is located directly below the first ground trace when located directly below the first sensor trace.

The touch panel of the embodiment 5 is a touch panel of a one-piece glass (OGS) structure, wherein the trace area further comprises a trace layer, and the trace layer comprises the connection a ground layer, the first insulating layer, the first sensor trace, a first ground trace, a second insulating layer, a second sensor trace, and a second ground trace, the ground layer has a first side and a second side, the first insulating layer is disposed on the first side, the first sensor trace and the first ground trace are disposed on the first insulating layer, the second An insulating layer is disposed on the second side, and the second sensor trace and the second ground trace are disposed on the second insulating layer, wherein the ground layer is used to isolate the first sensor trace One of the first signal generated by the second sensor trace and one of the second signal generated by the second sensor trace is generated by the first sensor trace a second interference, the second insulating layer is located in a projection of the first insulating layer in space, when the second ground trace is located in the first ground trace Beneath the second sensor traces located on the first sensor Directly below the detector trace, and when the second ground trace is directly below the first sensor trace, the second sensor trace is directly below the first ground trace.

A touch panel comprising a routing area, the routing area having a cross section, the cross section comprising: a first wiring layer; a second wiring layer; and an insulating layer, Between the first and the second trace layers.

The touch panel of the embodiment 8 is a touch panel of a glass-film-film (GFF) structure, wherein the first wiring layer comprises a first substrate, and is disposed on the first a grounding layer on a substrate, the insulating layer disposed on the grounding layer, a first grounding trace disposed on the insulating layer, and a first sensor trace disposed on the insulating layer, The second wiring layer includes a second substrate, a second grounding trace and a second sensor trace. The second ground trace and the second sensor trace are disposed on the second substrate. The ground layer is configured to isolate the first and second sensor traces to avoid interference between the first and second sensor traces, the second ground trace and the second sense The device trace is located in a projection of the ground layer in space. When the second ground trace is directly below the first ground trace, the second sensor trace is located at the first sensor. Directly below the line, and when the second ground trace is directly below the first sensor trace, the second sensor trace is located at the first ground The direct line of square.

The touch panel of the embodiment 8 is a touch panel of a one-piece glass (OGS) structure, wherein the trace region further includes a ground layer, and the insulating layer is a first insulating layer. The first wiring layer includes a first insulating layer, a first sensor trace and a first ground trace, and the second trace layer includes a second insulating layer and a second sensor trace And a second grounding line, the grounding layer has a first side and a second side, the first insulating layer is disposed on the first side, the first sensor trace and the first ground trace The second insulating layer is disposed on the second side, the second sensor trace and the second ground trace are disposed on the second insulating layer, and the ground layer is used Separating a first signal generated by the first sensor trace to generate a second signal pair generated by the first sensor trace and the second sensor trace generated by the second sensor trace a second interference generated by the first sensor trace, the second insulating layer being located in a projection of the first insulating layer in space, when the When the second grounding trace is directly under the first grounding trace, the second sensor trace is located directly below the first sensor trace, and when the second ground trace is located at the first sense When the detector is directly below the trace, the second sensor trace is located directly below the first ground trace.

In summary, the present invention provides a touch panel having a first trace layer and a second trace layer, and the trace layers are located in different vertical horizontal trace regions. Because the touch panel has a narrower side The frame can be set up with a relatively wide touch screen, so it is indeed progressive and novel.

Therefore, even though the present invention has been described in detail by the above-described embodiments, it can be modified by those skilled in the art, and is not intended to be protected as claimed.

13‧‧‧First sensor trace

14‧‧‧Second sensor trace

15‧‧‧ Grounding trace

21‧‧‧protective glass

22‧‧‧First substrate

23‧‧‧second substrate

24‧‧‧ITO sensor

3‧‧‧ The touch panel of the first preferred embodiment of the present invention

30‧‧‧Wiring area

31‧‧‧Insulation

32‧‧‧ Grounding layer

Claims (10)

A touch panel includes a trace area, the trace area includes: a first trace layer, comprising: a first substrate; a ground layer disposed on the first substrate; an insulating layer disposed on the a grounding layer; and a first sensor trace disposed on the insulating layer; and a second trace layer parallel to the first trace layer, comprising: a second substrate; a first grounding And a second sensor trace, wherein the first ground trace and the second sensor trace are disposed on the second substrate, the first ground trace and the second sensor go The line is located in a projection of the ground layer in space, and the insulating layer is configured to isolate the first and the second sensor traces to avoid generating a first trace between the first sensor and the second sensor. interference. The touch panel of claim 1, wherein the first wiring layer further comprises a second grounding trace disposed on the insulating layer, and the first grounding trace is located at the second grounding When the line is directly below, the second sensor trace is located directly below the first sensor trace, and when the first ground trace is directly below the first sensor trace, The second sensor trace is located directly below the second ground trace. A touch panel includes a routing area, and the routing area includes: a ground layer having a first side and a second side; a first insulating layer disposed on the first side; a first sensor trace; a first ground trace, wherein the first sensing The first grounding trace is disposed on the first insulating layer; a second insulating layer is disposed on the second side; a second sensor trace; and a second ground trace, wherein The second sensor trace and the second ground trace are disposed on the second insulating layer, and the second insulating layer is located in a projection of the first insulating layer in space. The touch panel of claim 3, wherein the ground layer is used to isolate one of the first sensor traces generated by the first sensor trace to the second sensor trace. Interference with a second signal generated by the second sensor trace to generate a second interference to the first sensor trace, when the second ground trace is located at the first ground trace Directly below, the second sensor trace is located directly below the first sensor trace, and when the second ground trace is directly below the first sensor trace, the second The sensor trace is located directly below the first ground trace. A touch panel includes a trace area including: a ground layer; an insulating layer disposed on the ground layer; A first sensor trace is disposed on the insulating layer. The touch panel of claim 5, wherein the touch panel further comprises a first and a second trace layer, the first trace layer The first substrate, the ground layer disposed on the first substrate, the insulating layer, a first ground trace disposed on the insulating layer, and the first sensor trace, the second trace layer a second substrate, a second ground trace and a second sensor trace. The second ground trace and the second sensor trace are disposed on the second substrate, and the ground layer is used for Isolation of the first and second sensor traces to avoid interference between the first and second sensor traces, wherein the second ground trace and the second sensor trace are located In a projection of the ground layer, when the second ground trace is directly below the first ground trace, the second sensor trace is directly below the first sensor trace. And when the second ground trace is directly below the first sensor trace, the second sensor trace is located at the first ground trace Directly below. The touch panel of claim 5 is a single-piece glass structure touch panel, wherein the routing area further comprises a trace layer, the insulating layer is a first insulating layer, and the walking The wire layer includes the ground layer, the first insulating layer, the first sensor trace, a first ground trace, a second insulation layer, a second sensor trace, and a second ground trace The ground layer has a first side and a second side, and the first insulating layer is disposed on the On the first side, the first sensor trace and the first ground trace are disposed on the first insulating layer, the second insulating layer is disposed on the second side, and the second sensor traces And the second grounding trace is disposed on the second insulating layer, the grounding layer is configured to isolate one of the first sensor traces generated by the first sensor trace to the second sensor trace The first interference and the second signal generated by the second sensor trace generate a second interference to the first sensor trace, and the second insulation layer is located on the first insulation layer in space In one projection, when the second ground trace is directly below the first ground trace, the second sensor trace is located directly below the first sensor trace, and when the second When the ground trace is directly below the first sensor trace, the second sensor trace is directly below the first ground trace. A touch panel includes a trace region having a ground layer and a cross section, the cross section including: a first trace layer; a second trace layer; and an insulating layer Located between the first and second trace layers and disposed on the ground layer. The touch panel of claim 8 is a touch panel of a two-layer film structure, wherein the first wiring layer comprises a first substrate, the ground layer disposed on the first substrate The insulating layer, a first ground trace disposed on the insulating layer, and a first ground trace disposed on the insulating layer a first sensor trace, the second trace layer includes a second substrate, a second ground trace and a second sensor trace, the second ground trace and the second sensor The grounding layer is disposed on the second substrate, the grounding layer is configured to isolate the first and second sensor traces to avoid interference between the first and second sensor traces. The second grounding conductor and the second sensor trace are located in a projection of the ground layer in space, and the second grounding conductor is located directly below the first grounding trace, the second sensor The trace is located directly below the first sensor trace, and when the second ground trace is directly below the first sensor trace, the second sensor trace is located at the first ground Just below the line. The touch panel of claim 8 is a single-piece glass structure touch panel, wherein the insulating layer is a first insulating layer, and the first wiring layer comprises the first insulating layer, a first sensor trace and a first ground trace, the second trace layer includes a second insulating layer, a second sensor trace and a second ground trace, the ground layer has a The first insulating layer is disposed on the first side, the first insulating trace and the first ground trace are disposed on the first insulating layer, the second insulating The layer is disposed on the second side, and the second sensor trace and the second ground trace are disposed on the second insulating layer, wherein the ground layer is used to isolate the first sensor trace a first signal generated by the first sensor trace and a second signal generated by the second sensor trace generated by the first sensor trace Second interference, the second insulation The layer is located in a projection of the first insulating layer in space, and when the second ground trace is directly below the first ground trace, the second sensor trace is located at the first sensor Directly below the line, and when the second ground trace is directly below the first sensor trace, the second sensor trace is directly below the first ground trace.