CN101893950A - Conductive structure and touch panel using same - Google Patents

Abstract

A conductive structure is arranged on a substrate of a touch panel. The conductive structure comprises a plurality of first transverse structures, a plurality of pattern structures and a plurality of second transverse structures. The first lateral structures are spaced apart and surround the edge of the substrate. The pattern structures are separately arranged and surround the edge of the substrate. The pattern structure is located inside the first transverse structure. Each pattern structure has a gate-shaped portion, a first row portion and a second row portion. An opening of the door-shaped portion faces at least one first transverse structure located on an outer side of the door-shaped portion. The first and second row portions extend laterally from opposite ends of the gate portion in a direction opposite the gate portion. The second horizontal structure and the door-shaped part of the pattern structure are arranged in a staggered way and are positioned at the inner side of at least one of the first horizontal row part and the second horizontal row part.

Description

Conductive structure and touch panel using same

technical field

The present invention relates to a conductive structure and a touch panel using the same, and in particular to a conductive structure for providing a linear electric field and a touch panel using the same.

Background technique

With the development of technology, the application of touch panels is becoming more and more common. The operating principle of the touch panel is: when the touch panel is touched by, for example, a stylus or a user's finger, the electric field generated by the electrode pattern in the touch panel generates a signal corresponding to the touched position. In this way, the touch panel can determine the touched position according to the signal. Therefore, the design of the electrode pattern in the touch panel often affects whether the touch panel can accurately determine the touched position as one of the key elements.

Generally speaking, the better the linearity of the electric field generated by the electrode pattern, the more accurately the touch panel can determine the touched position. In addition, the overall size of the electrode pattern also affects the size of the available sensing area of the touch panel. When the overall size of the electrode pattern is larger, the size of the available sensing area of the touch panel is smaller. Therefore, even though the linearity of the electric field can be improved by increasing the number of rows of electrode patterns, increasing the number of rows of electrode patterns tends to relatively reduce the size of the available sensing area of the touch panel, and also improves the performance of the touch panel. Manufacturing costs and man-hours.

Therefore, how to design a touch panel that can improve the linearity of the generated electric field and improve the accuracy of sensing without increasing the manufacturing cost and man-hour of the touch panel is one of the subjects that the industry is working hard on.

Contents of the invention

The present invention relates to a conductive structure and a touch panel using the same. The design of the conductive structure improves the linear performance of the electric field generated by the conductive structure, so that the accuracy of the touch panel in judging the touched position can be improved. promote. In addition, the manufacturing cost and time of the touch panel according to the present invention can also be reduced.

According to a first aspect of the present invention, a conductive structure is provided for being disposed on a substrate of a touch panel. The conductive structure includes several first lateral structures, several pattern structures and several second lateral structures. The first lateral structures are arranged separately and surround the edge of the substrate. The pattern structures are arranged separately and surround the edge of the substrate. The pattern structure is located inside the first lateral structure. Each pattern structure has a gate-shaped part, a first row part and a second row part. An opening of the gable portion faces at least one first transverse structure located outside the gable portion. The first row portion and the second row portion extend laterally from both ends of the door-shaped portion along a direction opposite to the door-shaped portion. The second lateral structure is arranged alternately with the gate-shaped part of the pattern structure, and is located inside at least one of a first row part and a second row part.

According to a second aspect of the present invention, a touch panel is provided, including a substrate, a conductive layer, and a conductive structure. The conductive layer is disposed on the substrate. The conductive structure is disposed on the conductive layer. The conductive structure includes several first lateral structures, several pattern structures and several second lateral structures. The first lateral structures are arranged separately and surround the edge of the substrate. The pattern structures are arranged separately and surround the edge of the substrate. The pattern structure is located inside the first lateral structure. Each pattern structure has a gate-shaped part, a first row part and a second row part. An opening of the gable portion faces at least one first transverse structure located outside the gable portion. The first row portion and the second row portion extend laterally from both ends of the door-shaped portion along a direction opposite to the door-shaped portion. The second lateral structure is arranged alternately with the gate-shaped part of the pattern structure, and is located inside at least one of a first row part and a second row part.

In order to make the above content of the present invention more obvious and understandable, the preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows:

Description of drawings

FIG. 1A shows a schematic diagram of a touch panel according to a preferred embodiment of the present invention.

FIG. 1B shows a top view of a portion of the conductive structure in FIG. 1A .

FIG. 2 shows a schematic diagram of a touch panel according to another preferred embodiment of the present invention.

Description of main component symbols

100, 100': touch panel

110, 110’, 190’: Substrate

111, 113, 115, 117: side

130, 130': conductive layer

150: conductive structure

151: First lateral structure

153: Pattern structure

153': second transverse structure

153a: Gate shape part

153a1: opening

153a2: longitudinal section

153a3: Transverse section

153a3', 155': Medial side

153b1: First row

153b2: Second row

155: Second lateral structure

157: The third lateral structure

170': spacer

d1, d2, d3: spacing

L: horizontal line

P1, P2: Midpoint

R: area

Detailed ways

Please refer to FIG. 1A , which shows a schematic diagram of a touch panel according to a preferred embodiment of the present invention. The touch panel 100 is, for example, a capacitive touch panel, including a substrate 110 , a conductive layer 130 and a conductive structure 150 . The conductive layer 130 is disposed on the substrate 110 . The conductive structure 150 is disposed on the conductive layer 130 .

Please also refer to FIG. 1B , which shows a top view of a portion of the conductive structure in FIG. 1A . Although the conductive structure 150 in the region R is used as an example for illustration, those skilled in the art should be able to understand the features of the conductive structure 150 of this embodiment.

The conductive structure 150 includes several first lateral structures 151 , several pattern structures 153 and several second lateral structures 155 . The first lateral structure 151 and the pattern structure 153 are separately disposed and surround the edge of the substrate 110 . The pattern structure 153 is located inside the first lateral structure 151 .

Each pattern structure 153 has a gate-shaped portion 153a, a first row portion 153b1 and a second row portion 153b2. An opening 153a1 of the gate-shaped portion 153a faces at least one first transverse structure 151 located outside the gate-shaped portion 153a. The first row portion 153b1 and the second row portion 153b2 extend laterally from both ends of the gate-shaped portion 153a along a direction opposite to the gate-shaped portion 153a.

The second horizontal structure 155 is arranged alternately with the gate-shaped portion 153 a of the pattern structure 153 , and is located inside at least one of the first horizontal row portion 153b1 and the second horizontal row portion 153b2 .

By inputting a voltage to the conductive structure 150 of the touch panel 100 , the conductive structure 150 correspondingly generates an electric field at the conductive layer 130 . Due to the design of the first lateral structure 151, the generated electric field can be uniformly distributed. In addition, the cooperation between the second lateral structure 155 and the pattern structure 153 makes the voltage value of the electric field gradually decrease from the voltage input terminal to the voltage non-input terminal. In this way, the electric field of the touch panel 100 can have a good linear performance, so that the touch panel 100 can accurately determine the touched position.

Now, the touch panel 100 of this embodiment is further described as follows. The edge of the substrate 110 in FIG. 1A has four sides, which are respectively marked with reference numerals 111 , 113 , 115 and 117 . The side 111 and the side 115 are substantially parallel to each other, and the side 113 and the side 117 are substantially parallel to each other. In this embodiment, the conductive structure 150 is a biaxially symmetrical shape. That is, the conductive structure 150 at the side 111 is symmetrical to the conductive structure 150 at the side 115 , and the conductive structure 150 at the side 113 is symmetrical to the conductive structure at the side 117 .

Since the first lateral structure 151, the pattern structure 153, and the second lateral structure 155 of the conductive structure 150 surround the edge of the substrate 110 having sides 111, 113, 115, and 117, the first lateral structure 151, the pattern structure 153, and the second lateral structure The two lateral structures 155 are disposed on the four sides 111 , 113 , 115 and 117 . In the following, only the first lateral structure 151 , the pattern structure 153 and the second lateral structure 155 located at the side 111 are used to illustrate their arrangement relationship and shape design.

As shown in FIG. 1A and FIG. 1B , the long side of the first lateral structure 151 and the long side of the second lateral structure 153 located at the side 111 are substantially parallel to the side 111 . Each gate-shaped portion 153a has a transverse portion 153a3 and two longitudinal portions 153a2. The two longitudinal portions 153a2 extend from both ends of the transverse portion 153a3 toward the first row portion 153b1 and the second row portion 153b2 to be coupled to one end of the first row portion 153b1 and one end of the second row portion 153b2 respectively. The long side of the transverse portion 153 a 3 , the long side of the first row portion 153 b1 and the long side of the second row portion 153 b 2 located at the side 111 are substantially parallel to the side 111 .

In addition, as shown in FIG. 1B , each second lateral structure 155 is separated from an adjacent door-shaped portion 153 a by a distance d1 , and the length of each lateral portion 153 a 3 is substantially equal to the length of each second lateral structure 155 . The inner side 153a3' of each transverse portion 153a3 and the inner side 155' of each second transverse structure 155 are located on the same horizontal line L. In this way, the voltage value of the electric field of the touch panel 100 decreases gradually from the voltage input end to the voltage non-input end in an equal difference manner. Furthermore, the first row portion 153b1 of each pattern structure 153 is separated from the second row portion 153b2 of the adjacent pattern structure 153 by a distance d2. Preferably, the distance d2 is substantially twice the distance d1. Of course, the relationship between the distance d1 and the distance d2 is not limited to twice, and the relationship between the distance d1 and the distance d2 can be properly adjusted and changed according to requirements.

In the arrangement relation of the first lateral structure 151 , the pattern structure 153 and the second lateral structure 155 of the conductive structure 150 , the midpoint P1 of the pitch d2 is located in the extending direction of the central axis of the long side of the second lateral structure 155 . In addition, the first lateral structures 151 are spaced apart from each other by a distance d3, and the midpoint P2 of the distance d3 is located in the extending direction of the central axis of the long side of the lateral portion 153b2. In addition, as shown in FIG. 1B , the conductive structure 150 of this embodiment may further include a third lateral structure 157 , and the third lateral structure 157 is located at the opening 153 a 1 , for example.

The above describes the design of the conductive structure 150 at the side 111 . Since the design of the conductive structure 150 at the sides 113 , 115 and 117 is similar to that of the conductive structure 150 at the side 111 , details are not repeated here. Preferably, the number of the first conductive structures 151 located on each side 111 , 113 , 115 and 117 is at least two.

In this embodiment, the distance d1 between the side 111 and the side 115 is the same as the distance d1 between the side 113 and the side 117, and the distance d2 between the side 111 and the side 115 is the same as that between the side 111 and the side 115. The distance d2 at the side 113 and the side 117 is the same. However, the present invention is not limited thereto. That is to say, the distance d1 between the side 111 and the side 115 may be different from the distance d1 between the side 113 and the side 117, and the distance d2 between the side 111 and the side 115 may be different from the distance d1 between the side 111 and the side 115. The distance d2 at the side 113 and the side 117 is different.

Please refer to FIG. 2 , which shows a schematic diagram of a touch panel according to another preferred embodiment of the present invention. The touch panel in FIG. 2 is, for example, a five-wire resistive touch panel 100'. The touch panel 100' includes a substrate 110', a conductive layer 130', a conductive structure 150 as shown in FIG. 1A (not shown in FIG. 2), several spacers (dot spacers) 170' and a substrate 190' . The conductive structure 150 is disposed on the conductive layer 130' and surrounds the conductive layer 130'. The substrate 190' is disposed corresponding to the position of the substrate 110', and is, for example, a flexible conductive layer. The spacer 170' is disposed between the conductive layer 130' and the substrate 190' for electrically isolating the conductive layer 130' and the flexible conductive layer 190' when the user is not touching the touch panel 100'. Due to the arrangement of the conductive structure 150, the electric field of the touch panel 100' can have good linearity, so the touch panel 100' can accurately determine the touched position. Of course, the structural configurations of the touch panels 100 and 100' here are only examples of the application of the conductive structure 150, and are not intended to limit the present invention.

The conductive structure disclosed in the above-mentioned embodiments of the present invention and the touch panel using it can improve the linear performance of the electric field generated by the design of the conductive structure, so that the touch panel of this embodiment can accurately determine whether it is touched s position. In comparison, the overall size of the conductive structure of this embodiment is smaller than the overall size of the conductive structure with a multi-column structure. Therefore, when the conductive structure of this embodiment and the conductive structure with a multi-column structure are arranged When on the panel, the touch panel using the conductive structure of this embodiment can have a larger usable sensing area. In this way, the touch panel of this embodiment is convenient for the user to operate, and also meets the size requirement of the user for the usable sensing area. In addition, since the overall size of the conductive structure of this embodiment is relatively small, the manufacturing cost and man-hours of the conductive structure of this embodiment can be correspondingly reduced.

In summary, although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art of the present invention can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the claims.

Claims (23)

1. conductive structure, on a substrate that is arranged on a contact panel, this conductive structure comprises:

A plurality of first transversaries are provided with separatedly, and around the edge of this substrate;

A plurality of patternings, be provided with separatedly, and this edge around this substrate, those patternings are positioned at the inboard of those first transversaries, respectively this patterning has a font portion, one first line portion and one second line portion, one opening surface of this font portion is at least one this first transversary in the outside that is positioned at this font portion, this first line portion and this second line portion respectively from the two ends of this font portion along laterally extending in contrast to the direction of this font portion; And

A plurality of second transversaries dispose alternately with those font portions of those patternings, and are positioned at least one inboard of this first line portion and this second line portion.

2. conductive structure according to claim 1, wherein this conductive structure is a pair of axisymmetric shape.

3. conductive structure according to claim 1, wherein respectively this second transversary and adjacent apart one first spacing of this font portion, respectively this second line portion of this of this patterning first line portion and adjacent this patterning one second spacing of being separated by.

4. conductive structure according to claim 3, wherein the mid point of this second spacing is positioned on the bearing of trend of central shaft on long limit of this second transversary.

5. conductive structure according to claim 3, wherein this second spacing is essentially the twice of this first spacing.

6. conductive structure according to claim 1, wherein respectively this font portion has a transverse part and two longitudinal parts, these two longitudinal parts extend towards the direction of this first line portion and this second line portion from the two ends of this transverse part, with the end that is couple to this first line portion respectively and an end of this second line portion, respectively the length of this transverse part is equal to the respectively length of this second transversary in fact.

7. conductive structure according to claim 6, the apart spacing of those first transversaries wherein, the mid point of this spacing is positioned on the bearing of trend of central shaft on long limit of this transverse part.

8. conductive structure according to claim 6, wherein respectively the inboard side of this transverse part is positioned on the same horizontal line with the inboard side of this second transversary respectively.

9. conductive structure according to claim 1 also comprises:

At least one the 3rd transversary is positioned at wherein locating of those openings.

10. conductive structure according to claim 1, wherein this edge of this substrate has four sides, these four sides are parallel to each other in fact in twos, are positioned at the long limit of those first transversaries of one of them this side edge and the long limit of those second transversaries and are parallel to this one of them side in fact;

Wherein, respectively this font portion has a transverse part and two longitudinal parts, these two longitudinal parts extend towards the direction of this first line portion and this second line portion from the two ends of this transverse part, with the end that is couple to this first line portion respectively and an end of this second line portion, be positioned at the long limit of those transverse parts of this one of them side edge, the long limit of those first line portions and the long limit of those second line portions and be parallel to this one of them side in fact.

11. conductive structure according to claim 1, wherein this edge of this substrate has four sides, and the quantity that is positioned at those first conductive structures of one of them this side edge is at least two.

12. a contact panel comprises:

One first substrate;

One conductive layer is arranged on this first substrate; And

One conductive structure is arranged on this conductive layer, and this conductive structure comprises:

A plurality of first transversaries are provided with separatedly, and around the edge of this first substrate;

A plurality of patternings, be provided with separatedly, and this edge around this first substrate, those patternings are positioned at the inboard of those first transversaries, respectively this patterning has a font portion, one first line portion and one second line portion, one opening surface of this font portion is at least one this first transversary in the outside that is positioned at this font portion, this first line portion and this second line portion respectively from the two ends of this font portion along laterally extending in contrast to the direction of this font portion; And

A plurality of second transversaries dispose alternately with those font portions of those patternings, and are positioned at least one inboard of this first line portion and this second line portion.

13. contact panel according to claim 12, wherein this conductive structure is a pair of axisymmetric shape.

14. contact panel according to claim 12, wherein respectively this second transversary and adjacent apart one first spacing of this font portion, respectively this second line portion of this of this patterning first line portion and adjacent this patterning one second spacing of being separated by.

15. contact panel according to claim 14, wherein the mid point of this second spacing is positioned on the bearing of trend of central shaft on long limit of this second transversary.

16. contact panel according to claim 14, wherein this second spacing is essentially the twice of this first spacing.

17. contact panel according to claim 12, wherein respectively this font portion has a transverse part and two longitudinal parts, these two longitudinal parts extend towards the direction of this first line portion and this second line portion from the two ends of this transverse part, with the end that is couple to this first line portion respectively and an end of this second line portion, respectively the length of this transverse part is equal to the respectively length of this second transversary in fact.

18. contact panel according to claim 17, the apart spacing of those first transversaries wherein, the mid point of this spacing is positioned on the bearing of trend of central shaft on long limit of this transverse part.

19. contact panel according to claim 17, wherein respectively the inboard side of this transverse part is positioned on the same horizontal line with the inboard side of this second transversary respectively.

20. contact panel according to claim 12, wherein this conductive structure also comprises:

At least one the 3rd transversary is positioned at wherein locating of those openings.

21. contact panel according to claim 12, wherein this edge of this first substrate has four sides, these four sides are parallel to each other in fact in twos, are positioned at the long limit of those first transversaries of one of them this side edge and the long limit of those second transversaries and are parallel to this one of them side in fact;

Wherein, respectively this font portion has a transverse part and two longitudinal parts, these two longitudinal parts extend towards the direction of this first line portion and this second line portion from the two ends of this transverse part, with the end that is couple to this first line portion respectively and an end of this second line portion, be positioned at the long limit of those transverse parts of this one of them side edge, the long limit of those first line portions and the long limit of those second line portions and be parallel to this one of them side in fact.

22. contact panel according to claim 12, wherein this edge of this first substrate has four sides, and the quantity that is positioned at those first conductive structures of one of them this side edge is at least two.

23. contact panel according to claim 12 also comprises:

One second substrate is provided with position that should first substrate; And

A plurality of septs are arranged between this conductive layer and this second substrate.

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