TWI447620B - Touch panel - Google Patents

Description

Touch panel

The present invention relates to a display panel, and more particularly to a touch panel.

In recent years, touch display panels have been widely used in a variety of electronic products, such as: Global Positioning System (GPS), personal digital assistant (PDA), cellular phone and palmtop computer ( Hand-held PCs, etc., to replace traditional input devices (such as keyboards and mice), this design has changed dramatically, which not only enhances the human-machine interface affinity of these electronic devices, but also omits the tradition. Enter the device to free up more space for installing large display panels for users to browse the data.

At present, the touch display panel can be classified into two types according to the structure of the touch function, one is an external touch type touch display panel, and the other is an in-cell touch display panel (In-Cell Touch Panel). In the externally mounted touch panel, the touch string is first fabricated on a substrate, and the substrate on which the touch string has been fabricated is attached to the outer surface of the display. The in-cell touch display panel integrates the touch function directly into the panel production process without adding a layer of touch glass or conductive film.

In general, in the conventional touch panel, the X-direction touch string and the Y-direction touch string are interleaved, and the metal bridge wire is used to bridge the adjacent touch patterns. For example, two adjacent touch patterns in the X-direction touch string or the Y-direction touch string are electrically connected through a metal bridge connection. However, during the manufacturing process, the metal bridge wiring in the X-direction touch string and the Y-direction touch string may be broken due to contamination, scratches or other factors, so that the X-direction touch string The touch string in column or Y direction does not work properly.

The present invention provides a touch panel that can solve the problems of the conventional touch panel.

The present invention provides a touch panel including a plurality of first touch strings, a plurality of second touch strings, a first insulating layer, a plurality of conductive patterns, and a second insulating layer. The first touch string is located on the substrate, the first touch string extends in the first direction, and each of the first touch strings includes a plurality of first touch patterns and electrically connects the first touch patterns Multiple first bridge wires. The second touch string is located on the substrate, the second touch string extends in the second direction, and each of the second touch strings includes a plurality of second touch patterns and electrically connects the second touch patterns Multiple second bridge wires. The first insulating layer is located between the first bridge line and the second bridge line to electrically insulate the first bridge line from the second bridge line. The conductive pattern at least partially overlaps the first bridge line. The second insulating layer is sandwiched between the conductive pattern and the first and second touch strings.

The present invention further provides a touch panel including a plurality of first touch strings, a plurality of second touch strings, an insulating layer, and a plurality of conductive patterns. The first touch string is located on a substrate, the first touch string extends in a first direction, and each of the first touch strings includes a plurality of first touch patterns and electrically connects the first touch patterns Multiple first bridge wires. The second touch string is located on the substrate, the second touch string extends in a second direction, and each of the second touch strings includes a plurality of second touch patterns and electrically connects the second touch patterns Multiple second bridge wires. The insulating layer is located between the first bridge wire and the second bridge wire to electrically insulate the first bridge wire from the second bridge wire. The conductive pattern is disposed in parallel with the first bridge line, and both ends of each conductive pattern respectively overlap with the corresponding first touch pattern.

Based on the above, in the touch panel of the present invention, the conductive pattern at least partially overlaps the first bridge line. In this way, the conductive pattern can protect the first bridge wire to avoid damage to the first bridge wire. In addition, when an open circuit defect occurs at the intersection of the two touch strings, the conductive pattern can be used for repairing, so that the two touch series can provide normal sensing operation. Therefore, the touch panel can achieve the purpose of maintaining yield and simple repair.

The above described features and advantages of the present invention will be more apparent from the following description.

First embodiment

1 is a partial plan view of a touch panel according to a first embodiment of the present invention, and FIGS. 2A and 2B are partial cross-sectional views of the touch panel of FIG. 1, wherein FIG. 2A corresponds to the I-I' hatching of FIG. Whereas, Figure 2B corresponds to the II-II' section line of Figure 1. Referring to FIG. 1 , FIG. 2A and FIG. 2B , the touch panel 10 of the present embodiment includes a plurality of first touch strings 106 , a plurality of second touch strings 112 , a first insulating layer PV01 , and a plurality of conductive layers. The pattern 114 and the second insulating layer PV02.

Referring to FIG. 1 , the first touch string 106 and the second touch string 112 are disposed on the substrate 100 , wherein the first touch string 106 extends in a first direction, and the second touch string 112 Extend in two directions. In the present embodiment, the first and second directions are respectively illustrated by the Y and X directions, but the invention is not limited thereto.

The substrate 100 can be made of glass material, plastic material, germanium material or other suitable material for the substrate 100. The substrate 100 can also be a printed circuit board or a display panel, such as a liquid crystal display panel, an organic display panel, an electrophoretic display panel, and a battery. The slurry display panel and the like can be directly integrated on the display panel or the display panel, and the invention is not limited thereto.

Each of the first touch strings 106 includes a plurality of first touch patterns 102 and a plurality of first bridge lines 104 connecting the first touch patterns 102, and each of the second touch strings 112 includes a plurality of second The touch pattern 108 and the plurality of second bridge lines 110 connecting the second touch patterns 108. It is noted that the first touch pattern 102 and the second touch pattern 108 are electrically insulated from each other. In addition, each of the first touch patterns 102 and each of the second touch patterns 108 are electrically connected to a corresponding one of the peripheral lines SL, and the signals are output and input to the first touch patterns 102 by the peripheral lines SL. And the second touch pattern 108. The materials of the first touch pattern 102 and the second touch pattern 108 include transparent conductive materials, including indium tin oxide (ITO), indium zinc oxide (IZO), other transparent conductive metal oxides or thin layer metals. The invention is not limited. The material of the first bridge wire 104 is, for example, a metal conductive material, including aluminum, copper, molybdenum, titanium, silver, gold, platinum and alloys thereof, other metals, a laminated structure of the above materials or other suitable materials, and the present invention does not Limit it. The material of the second bridge line 110 is the same as or similar to that of the first touch pattern 102 and the second touch pattern 108, and includes indium tin oxide (ITO), indium zinc oxide (IZO), and other transparent conductive metal oxides. The material is either a thin layer of metal and the invention is not limited.

In more detail, the first touch string 106 is formed by staggering a plurality of first touch patterns 102 and a plurality of first bridge lines 104, and each of the first bridge lines 104 and the first touch on both sides thereof The control pattern 102 is electrically connected by the contact window C01. On the other hand, the second touch string 112 is composed of a plurality of second touch patterns 108 and a second bridge 110 directly electrically connected to both sides of the second touch pattern 108.

Each of the conductive patterns 114 at least partially overlaps with a corresponding one of the first bridge wires 104. Here, the area of the conductive pattern 114 may be greater than or equal to the area of the first bridge line 104. In other words, each of the conductive patterns 114 at least partially overlaps each of the first touch patterns 102, so that the first touch pattern 102 can be protected from external damage (such as scratches). In addition, the conductive pattern 114 can also be utilized to repair the first bridge wire. In another embodiment, the area of the conductive pattern 114 may even be smaller than the area of the first bridge line 104, wherein the repair mode will be described in detail below.

As described above, the first insulating layer PV01 is disposed between the first bridge wire 104 and the second bridge wire 110 to electrically insulate the first bridge wire 104 from the second bridge wire 110, as shown in FIG. 2A. In the embodiment, the first insulating layer PV01 has a contact window C01 for electrically connecting the first bridge 104 to the first touch pattern 102. The first insulating layer PV01 can completely cover the substrate 100 and the first bridge line 104, and the first touch pattern 102, the second touch pattern 108, and the second bridge line 110 are formed on the first insulating layer PV01. In addition, the first insulating layer PV01 may also be formed only at the overlap of the first bridge line 104 and the second bridge line 110, so that most of the first touch pattern 102, the second touch pattern 108, and the second bridge Line 110 is formed on substrate 100.

In addition, a second insulating layer PV02 is disposed between the conductive pattern 114 and the first touch string 106 / the second touch string 112 to make the conductive pattern 114 and the first touch string 106 / the second touch string The columns 112 are electrically insulated. In an embodiment of the invention, the second insulating layer PV02 covers the first touch string 106 and the second touch string 112, and the conductive pattern 114 is located on the second insulating layer PV02.

Furthermore, the touch panel structure of the embodiment further includes a third insulating layer PV03. The third insulating layer PV03 covers the conductive pattern 114.

The materials of the first insulating layer PV01, the second insulating layer PV02, and the third insulating layer PV03 may include an inorganic dielectric material (for example, yttrium oxide, tantalum nitride, hafnium oxynitride or other suitable inorganic dielectric materials). The organic dielectric material or the laminated structure thereof is not limited by the present invention.

As described above, when the touch panel 10 is in the touch operation, the signal on the first touch string 106 is via the first touch pattern 102, the first touch pattern 102 in the contact window C01, and the first The bridge wire 104, the first touch pattern 102 in the adjacent contact window C01 is transmitted to the other first touch pattern 102, as indicated by the arrow A. In this way, the touch signal of the touch string 106 can be transmitted to the corresponding peripheral line SL. However, when the first bridge wire 104 has a wire breakage defect, the signal on the first touch string 106 will not be smoothly transmitted.

2B is a cross-sectional view of the first bridge line 104 between the first touch patterns 102 of FIG. Referring to FIG. 1 and FIG. 2B simultaneously, when at least one of the first bridge wires 104 has a wire break defect BD, the signal on the first touch string 106 will not be smoothly transmitted. Therefore, in this embodiment, the conductive pattern 114 can be electrically connected to the first touch pattern 102 by a repair process (for example, laser welding L or other means). In more detail, after performing a repair process (for example, laser welding L or other means), a contact window C03 may be formed between the conductive pattern 114 and the first touch pattern 102, and the contact window C03 has a conductive pattern. The conductive pattern 114 is electrically connected to the first touch pattern 102. At this time, the signal on the first touch string 106 can be transmitted to the other through the first touch pattern 102, the conductive pattern 114 in the contact window C03, the conductive pattern 114, and the conductive pattern 114 in the adjacent contact window C03. The first touch pattern 102 is indicated by the arrow A'.

In the embodiment of FIGS. 2A and 2B described above, the first bridge line 104 is located on the substrate 100, and the conductive pattern 114 is located above the first bridge line 104, but the invention is not limited thereto. According to another embodiment of the present invention, the first bridge line 104 may also be located above the conductive pattern 114, as shown in FIG. 3A.

Referring to FIG. 3A , the conductive pattern 114 is located on the substrate 100 , and the second insulating layer PV02 covers the conductive pattern 114 . The first touch string 106 and the second touch string 112 are located on the second insulating layer PV02. In particular, the first touch pattern 102 of the first touch string 106, the second touch pattern 108 of the second touch string 112, and the second bridge line 110 are located on the second insulating layer PV02. A first insulating layer PV01 is sandwiched between the first bridge line 104 of the first touch string 106 and the second bridge line 110 of the second touch string 112 to make the first bridge line 104 and the second bridge line 110 Electrical insulation. In addition, the first insulating layer PV01 has a contact window C05 for electrically connecting the first touch pattern 102 of the first touch string 106 to the first bridge line 104. The third insulating layer PV03 covers the first bridge line 114.

In this embodiment, when the touch panel is in the touch operation, the signal on the first touch string 106 is the first bridge 104 and the first bridge in the first touch pattern 102, the contact window C05. The wiring 104, the first bridge 104 in the adjacent contact window C05, is transmitted to the other first touch pattern 102, as indicated by the arrow B. In this way, the touch signal of the touch string 106 can be transmitted to the corresponding peripheral line SL. However, when the first bridge wire 104 has a wire breakage defect, the signal on the first touch string 106 will not be smoothly transmitted.

When at least one of the first bridge wires 104 has a wire break defect BD, as shown in FIG. 3B, the signal on the first touch string 106 will not be smoothly transmitted. Therefore, in this embodiment, the conductive pattern 114 can be electrically connected to the first touch pattern 102 by a patch (for example, laser welding L or other manner) through the back surface of the substrate 100. In more detail, after performing a repair process (for example, laser welding L or other methods), a contact window C07 may be formed between the conductive pattern 114 and the first touch pattern 102 to make the conductive pattern 114 and the first The touch pattern 102 is electrically connected. At this time, the signal on the first touch string 106 can be transmitted to the other through the first touch pattern 102, the conductive pattern 114 in the contact window C07, the conductive pattern 114, and the conductive pattern 114 in the adjacent contact window C07. The first touch pattern 102 is indicated by the arrow B'.

In particular, if the conductive pattern 114 is located below the first bridge line 104, the width of the conductive pattern 114 may be greater than, equal to, or less than the width of the first bridge line 104.

4 is a partial top plan view of a touch panel according to an embodiment of the present invention, and FIGS. 5A and 5B are partial cross-sectional views of the touch panel of FIG. 4, wherein FIG. 5A corresponds to a line I-I' of FIG. And Figure 5B corresponds to the II-II' section line of Figure 4. In this embodiment, the same components as those of the above-described embodiment of FIG. 1 and FIG. 2A to FIG. 2B are denoted by the same reference numerals and the description thereof will not be repeated.

Referring to FIG. 4 and FIG. 5A simultaneously, in the embodiment, the area of the conductive pattern 114 is larger than the area of the first bridge line 104, so that each conductive pattern 114 overlaps with the first touch pattern 102. A bridge wiring 104. Here, in addition to the protection of the first touch pattern 102 by the conductive pattern 114 to protect it from external damage (such as scratches), the conductive pattern 114 can also be used to repair the first bridge line 104.

When at least one of the first bridge wires 104 has a wire break defect BD, as shown in FIG. 5B, the signal on the first touch string 106 will not be smoothly transmitted. Therefore, in this embodiment, the conductive pattern 114 can be electrically connected to the first touch pattern 102 by a repair process (for example, laser welding L or other means). In more detail, after performing a repair process (for example, laser welding L or other methods), a contact window C08 may be formed between the conductive pattern 114 and the first touch pattern 102 to make the conductive pattern 114 and the first The touch pattern 102 is electrically connected. At this time, the signal on the first touch string 106 can pass through the first touch pattern 102, the first touch pattern 102 in the contact window C08, the conductive pattern 114, and the first touch pattern in the adjacent contact window C08. 102 is transferred to another first touch pattern 102, as indicated by arrow B'.

Based on the above, in the touch panel 10 of the present embodiment, the conductive pattern 114 at least partially overlaps the first bridge line 104. Therefore, the conductive pattern 114 can protect the first bridge wire 104 from external force damage. In addition, when the first bridge wire 104 is broken, the conductive pattern 114 can be used in place of the first bridge wire 104 to connect the two adjacent first touch patterns 102. In this way, after the repair using the conductive pattern 114, the first touch string 106 can be restored to the electrical connection state, so the first touch string 106 can provide a normal sensing operation. Therefore, the touch panel of the embodiment can achieve the purpose of maintaining the yield and simplifying the repair.

Second embodiment

6 is a partial top plan view of a touch panel according to a second embodiment of the present invention, and FIGS. 7A and 7B are partial cross-sectional views of the touch panel of FIG. 6, wherein FIG. 7A corresponds to the III-III' hatching of FIG. Whereas, Figure 7B corresponds to the line IV-IV' of Figure 6. In this embodiment, the same elements as those of the above-described first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

Referring to FIG. 6 , FIG. 7A and FIG. 7B , the touch panel of the embodiment includes a plurality of first touch strings 106 , a plurality of second touch strings 112 , insulating layers PV01 , PV02 , PV03 and a plurality of Conductive pattern 202. In this embodiment, the first touch string 106 and the second touch string 112 are the same as the first embodiment described above. Similarly, the first insulating layer PV01 can completely cover the substrate 100 and the first bridge line 104, and the first touch pattern 102, the second touch pattern 108, and the second bridge line 110 are formed on the first insulating layer PV01. In addition, the first insulating layer PV01 may also be formed only at the overlap of the first bridge line 104 and the second bridge line 110, so that most of the first touch pattern 102, the second touch pattern 108, and the second bridge Line 110 is formed on substrate 100. In the embodiment of the present embodiment, the first insulating layer PV01 is formed at an overlap between the first bridge line 104 and the second bridge line 110 as an example.

The embodiment is different from the first embodiment in that the conductive pattern 202 is disposed in parallel with the first bridge line 104, and both ends of each conductive pattern 202 overlap with the corresponding first touch pattern 102, respectively. The second insulating layer PV02 covers the first touch string 106, the second touch string 112, and the conductive pattern 202. In other words, the conductive pattern 202 and the first bridge line 104 are not overlapped, and each of the conductive patterns 202 has at least partially overlapping each of the first touch patterns 102 or each of the second touch patterns 108. In addition, since the first insulating layer PV01 is formed at the overlap of the first bridge line 104 and the second bridge line 110, the first touch pattern 102 and the second bridge line 110 under the conductive pattern 202 of the embodiment are formed. On the substrate 100, the second insulating layer PV02 covers the first touch pattern 102 and the second bridge line 110, as shown in FIG. 7B.

In this embodiment, when the touch panel is in the touch operation, the signals on the first touch string 106 are the first touch pattern 102, the contact window C01, the first bridge 104, and the contact window C01. Transfer to another first touch pattern 102, as indicated by arrow C. In this way, the touch signal of the touch string 106 can be transmitted to the corresponding peripheral line SL. However, when the first bridge wire 104 has a wire breakage defect, the signal on the first touch string 106 will not be smoothly transmitted.

8 is a partial top plan view of a touch panel having a wire breakage defect according to a second embodiment of the present invention, and FIGS. 9A and 9B are partial cross-sectional views of the touch panel of FIG. 8, wherein FIG. 9A corresponds to FIG. At the 'III' section line, FIG. 9B corresponds to the IV-IV' section line of FIG.

Referring to FIG. 8 and FIG. 9A, when at least one of the first bridge wires 104 has a wire break defect BD, the signal on the first touch string 106 will not be smoothly transmitted. Therefore, in this embodiment, the conductive pattern 202 and the first touch pattern 102 can be electrically connected by a repair process (for example, laser welding L or other means).

In more detail, referring to FIG. 9B, after performing a repair process (for example, laser welding L is irradiated from the opposite side of the substrate or other manner), a contact window may be formed between the conductive pattern 202 and the first touch pattern 102. C11, the conductive pattern 202 is electrically connected to the first touch pattern 102. At this time, the signal on the first touch string 106 can be transmitted to the other through the first touch pattern 102, the conductive pattern 202 in the contact window C11, the conductive pattern 202, and the conductive pattern 202 in the adjacent contact window C11. The first touch pattern 102 has a path indicated by an arrow C'. In the present embodiment, if the laser welding L is irradiated from the substrate side (not shown), the conductive material filled in the contact window C11 is the first touch pattern 102.

10A and FIG. 10B are partial cross-sectional views of a touch panel according to another embodiment of the present invention, wherein FIG. 10A corresponds to the line III-III' of FIG. 8, and FIG. 10B corresponds to FIG. At the section line. In this embodiment, the same components as those of the above-described FIG. 9A and FIG. 9B are similar, and therefore the same elements are denoted by the same reference numerals and the description thereof will not be repeated. The embodiment is different from the embodiment of FIG. 9A and FIG. 9B described above in that the first bridge line 104 is formed above the first touch pattern 102 and the second bridge line 110, and the conductive pattern 202 is formed on the substrate. 100, and the second insulating layer PV02 covers the conductive pattern 202. In other words, in the embodiment, the first bridge line 104 is formed over the first insulating layer PV01, and the conductive pattern 202 is formed under the second insulating layer PV02, so the first bridge line 104 and the conductive pattern 202 are located. Different film layers. In addition, this embodiment can also selectively increase the third insulating layer PV03 over the first bridge line 104.

Similarly, when at least one of the first bridge wires 104 has a wire break defect BD, a patch (for example, laser welding L or other means) can be used between the conductive pattern 202 and the first touch pattern 102. The contact window C12 is formed to electrically connect the conductive pattern 202 to the first touch pattern 102. At this time, the signal on the first touch string 106 can be transmitted to the other first through the first touch pattern 102, the conductive material in the contact window C12, the conductive pattern 202, and the conductive material in the adjacent contact window C12. The touch pattern 102 is indicated by the arrow C'. In this embodiment, the laser welding L may be repaired from the side of the substrate 100 or repaired by the opposite side (not shown), and the conductive material in the contact window C12 is respectively the conductive pattern 202 or the first touch. Control pattern 102.

11A and FIG. 11B are partial cross-sectional views of a touch panel according to another embodiment of the present invention, wherein FIG. 11A corresponds to a line III-III' of FIG. 8, and FIG. 11B corresponds to an IV-IV' of FIG. At the section line. In this embodiment, the same components as those of the above-described FIG. 9A and FIG. 9B are similar, and therefore the same elements are denoted by the same reference numerals and the description thereof will not be repeated. This embodiment is different from the above-described embodiments of FIGS. 9A and 9B in that the conductive pattern 202 is formed on the substrate 100, and the first insulating layer PV01 covers the conductive pattern 202. In other words, in the embodiment, the first bridge line 104 is formed under the first insulating layer PV01, and the conductive pattern 202 is also formed under the first insulating layer PV01. Therefore, the first bridge line 104 and the conductive pattern 202 of the embodiment belong to the same film layer.

Similarly, when at least one of the first bridge wires 104 has a wire break defect BD, a patch (for example, laser welding L or other means) can be used between the conductive pattern 202 and the first touch pattern 102. The contact window C13 is formed to electrically connect the conductive pattern 202 and the first touch pattern 102. At this time, the signal on the first touch string 106 can be transmitted to the other first through the first touch pattern 102, the conductive material in the contact window C13, the conductive pattern 202, and the conductive material in the adjacent contact window C13. The touch pattern 102 is indicated by the arrow C'. In this embodiment, the laser welding L may be repaired by the substrate 100 side, or by the opposite side repair (not shown), and the conductive material in the contact window C13 is respectively the conductive pattern 202 or the first touch. Control pattern 102.

12A and FIG. 12B are partial cross-sectional views of a touch panel according to another embodiment of the present invention, wherein FIG. 12A corresponds to the line III-III' of FIG. 8, and FIG. 12B corresponds to FIG. At the section line. In this embodiment, the same components as those of the above-described FIG. 9A and FIG. 9B are similar, and therefore the same elements are denoted by the same reference numerals and the description thereof will not be repeated. The embodiment is different from the embodiment of FIG. 9A and FIG. 9B in that the first bridge wire 104 is located above the first insulating layer PV01, and the first bridge wire 104 and the first touch pattern 102 are transmitted through the contact window. C14 is electrically connected. In addition, the conductive pattern 202 of the embodiment is also located on the first insulating layer PV01. Therefore, the first bridge line 104 and the conductive pattern 202 of the embodiment belong to the same film layer.

Similarly, when at least one of the first bridge wires 104 has a wire break defect BD, a patch (for example, laser welding L or other means) can be used between the conductive pattern 202 and the first touch pattern 102. The contact window C15 is formed to electrically connect the conductive pattern 202 and the first touch pattern 102. At this time, the signal on the first touch string 106 can be transmitted to the other first through the first touch pattern 102, the conductive material in the contact window C15, the conductive pattern 202, and the conductive material in the adjacent contact window C15. The touch pattern 102 is indicated by the arrow C'. In this embodiment, the laser welding L may be repaired by the substrate 100 side (not shown) or repaired by the opposite side, and the conductive material in the contact window C15 is the first touch pattern 102 or Conductive pattern 202.

Based on the above, in the touch panel 20 of the present embodiment, the conductive pattern 202 is parallel to the first bridge line 104 between the two adjacent first touch patterns 102 of the same first touch string 106. Therefore, when the first bridge wire 104 for connecting the two adjacent first touch patterns 102 is broken, the conductive pattern 202 can be used instead of the first bridge wire 104 to connect the two adjacent first touch patterns 102. . In this way, after the repair using the conductive pattern 202, the first touch string 106 can be restored to the electrical connection state, so the first touch string 106 can provide a normal sensing operation. Therefore, the touch panel 20 of the present embodiment can achieve the purpose of maintaining yield and simplifying repair.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

10. . . Touch panel

100. . . Substrate

102. . . First touch pattern

104. . . First bridge wiring

106. . . First touch string

108. . . Second touch pattern

110. . . Second bridge wiring

112. . . Second touch string

114, 202. . . Conductive pattern

C01, C03, C05, C07, C11~C15. . . Contact window

BD. . . Wire break defect

L. . . Laser welding

PV01. . . First insulating layer

PV02. . . Second insulating layer

PV03. . . Third insulating layer

SL. . . Peripheral line

1 is a partial top plan view of a touch panel according to a first embodiment of the present invention.

Fig. 2A is a schematic cross-sectional view taken along line I-I' of Fig. 1.

Fig. 2B is a schematic cross-sectional view taken along line II-II' of Fig. 1.

Fig. 3A is a schematic cross-sectional view taken along line I-I' of Fig. 1 in accordance with another embodiment of the present invention.

Figure 3B is a schematic cross-sectional view taken along line II-II' of Figure 1 in accordance with another embodiment of the present invention.

4 is a partial top plan view of a touch panel according to an embodiment of the invention.

Fig. 5A is a schematic cross-sectional view taken along line I-I' of Fig. 4.

Fig. 5B is a schematic cross-sectional view taken along line II-II' of Fig. 4.

FIG. 6 is a partial top plan view of a touch panel according to a second embodiment of the present invention.

Fig. 7A is a schematic cross-sectional view taken along line III-III' of Fig. 6.

Fig. 7B is a schematic cross-sectional view taken along line IV-IV' of Fig. 6.

FIG. 8 is a partial top plan view of a touch panel having a wire break defect according to a second embodiment of the present invention.

Fig. 9A is a schematic cross-sectional view taken along line III-III' of Fig. 8.

Fig. 9B is a schematic cross-sectional view taken along line IV-IV' of Fig. 8.

10A and FIG. 10B are partial cross-sectional views of a touch panel according to another embodiment of the present invention, wherein FIG. 10A is a cross-sectional view corresponding to a line III-III' in FIG. 8, and FIG. 10B is a corresponding FIG. A schematic cross-sectional view of the IV-IV' section line.

11A and FIG. 11B are partial cross-sectional views of a touch panel according to another embodiment of the present invention, wherein FIG. 11A is a cross-sectional view corresponding to a line III-III' in FIG. 8, and FIG. 11B is a corresponding FIG. A schematic cross-sectional view of the IV-IV' section line.

12A and FIG. 12B are partial cross-sectional views of a touch panel according to another embodiment of the present invention, wherein FIG. 12A is a cross-sectional view corresponding to the line III-III' in FIG. 8, and FIG. 12B is a corresponding FIG. A schematic cross-sectional view of the IV-IV' section line.

10. . . Touch panel

102. . . First touch pattern

104. . . First bridge wiring

106. . . First touch string

108. . . Second touch pattern

110. . . Second bridge wiring

112. . . Second touch pattern

114. . . Conductive pattern

C01, C03. . . Contact window

SL. . . Peripheral line

Claims (15)

A touch panel includes: a plurality of first touch strings arranged on a substrate, the first touch strings extending in a first direction, and each of the first touch strings includes a plurality of first a plurality of first bridge wires electrically connected to the first touch patterns; a plurality of second touch strings arranged on the substrate, the second touch strings being arranged in a second direction And extending, and each of the second touch strings includes a plurality of second touch patterns and a plurality of second bridge lines electrically connecting the second touch patterns; a first insulating layer located at the first Between the bridge wiring and the second bridge wires, the first bridge wires are electrically insulated from the second bridge wires; and the plurality of conductive patterns at least partially overlap the first bridge wires And a second insulating layer sandwiched between the conductive patterns and the first and second touch strings. The touch panel of claim 1, wherein the second insulating layer covers the first touch string and the second touch string, and the conductive patterns are located in the second insulating layer on. The touch panel of claim 2, further comprising a third insulating layer covering the conductive patterns. The touch panel of claim 1, wherein the second insulating layer covers the conductive patterns, and the first touch strings and the second touch strings are located in the second insulating layer on. The touch panel of claim 4, wherein the conductive patterns have an area larger than an area of the first bridge lines. The touch panel of claim 1, wherein at least one of the first bridge wires has a wire break defect and the conductive pattern overlaps with the first bridge wire having the wire breakage defect The corresponding first touch patterns are electrically connected. A touch panel includes: a plurality of first touch strings arranged on a substrate, the first touch strings extending in a first direction, and each of the first touch strings includes a plurality of first a plurality of first bridge wires electrically connected to the first touch patterns; a plurality of second touch strings arranged on the substrate, the second touch strings being arranged in a second direction And extending, and each of the second touch strings includes a plurality of second touch patterns and a plurality of second bridge lines electrically connecting the second touch patterns; a first insulating layer located at the first Between the bridge wiring and the second bridge wires, the first bridge wires are electrically insulated from the second bridge wires; a plurality of conductive patterns, the conductive patterns are disposed in parallel with the first bridge wires, And each of the two ends of each conductive pattern overlaps with the corresponding first touch patterns. The touch panel of claim 7, wherein at least one of the first bridge wires has a wire break defect and is adjacent to the conductive pattern of the first bridge wire having a wire breakage defect The two ends are electrically connected to the corresponding first touch patterns. The touch panel of claim 7, further comprising a second insulating layer covering the first insulating layer. The touch panel of claim 9, wherein the first bridge wires are located on the substrate, and the first insulating layer covers the first bridge wires, and the conductive patterns are located on the second insulating layer on. The touch panel of claim 9, wherein the first bridge wires are located on the first insulating layer covering the first touch patterns and the second bridge wires, and the conductive layers are The pattern is on the substrate and the second insulating layer covers the conductive patterns. The touch panel of claim 9, wherein the first bridge wires are located on the substrate and the first insulating layer covers the first bridge wires, the conductive patterns are located on the substrate and the first An insulating layer covers the conductive patterns. The touch panel of claim 9, wherein the first bridge wires are located on the first insulating layer and the second insulating layer covers the first bridge wires, and the conductive patterns are located at the first The second insulating layer covers the conductive patterns on the insulating layer. The touch panel of claim 7, wherein the conductive patterns are the same film layer as the first bridge lines. The touch panel of claim 7, wherein the conductive patterns and the first bridge lines are different film layers.