TWI685783B - Touch panel with narrow border - Google Patents

Abstract

A touch panel is provided and includes a plurality of electrode strip sets, a plurality of transparent traces and a plurality of electrode series sets. The electrode strip sets include a first electrode strip set and a second electrode strip, and the first electrode strip set is disposed between the second electrode strip and a pad region. The transparent traces are disposed in a transparent region, the transparent traces electrically connected to the first electrode strip set and the second electrode strip set include a winding segment respectively, and a length of the winding segment electrically connected to the first electrode strip set is longer than a length of the winding segment electrically connected to the second electrode strip set. The electrode series sets cross the electrode strip sets.

Description

Touch panel with narrow bezel

The invention relates to a touch panel, in particular to a mutual-capacity touch panel with a narrow bezel.

The touch display device composed of a display and a touch panel has been widely used in smart phones and satellite navigation systems (GPS) because it can realize both touch and display functions and has the characteristics of human-computer interaction. navigator system), tablet PCs and laptop PCs. Among them, due to the advantages of high accuracy, multi-touch, high durability, and high touch resolution, mutual-capacitive touch panels have become the mainstream touch technology currently used in the industry.

Mutual-capacitive touch technology detects the static electricity on the touch object and the coupling capacitance generated by the touch unit when the touch object is close to or in contact with the touch unit on the touch panel, thereby judging the touch event. In terms of structural design, mutual capacitance touch technology can be divided into two types: single-layer electrode structure and double-layer electrode structure. Since the double-layer electrode structure is simpler in structure design and control algorithm than the single-layer electrode structure, the double-layer electrode structure is generally used in middle-to-high-end consumer electronic products. In the design of the traditional double-layer electrode structure, the sensing string and the driving string extend in the horizontal direction and the vertical direction respectively, and the wires connecting the sensing string must be connected to the sensing string from both sides of the sensing string. In this way, the range of the peripheral areas on both sides of the horizontal side of the touch panel is limited by the number of wires and cannot be reduced. Therefore, how to continuously reduce the touch surface The width of the border of the board, even reaching no border, is still the direction of continuous efforts of those skilled in the art.

One of the objects of the present invention is to provide a touch panel to reduce the width of the frame and further improve the visual effect.

In order to achieve the above purpose, the present invention discloses a touch panel having a light-transmitting area and an opaque area. The opaque area includes a pad area on the first side of the light-transmitting area, and the touch panel includes a plurality of electrodes A strip group, a plurality of first transparent wires and a plurality of electrode series groups. The electrode strip groups are respectively disposed in the light-transmitting area along the first direction, wherein the electrode strip groups include the first electrode strip group and the second electrode strip group, and the first electrode strip group is located between the second electrode strip group and the pad area between. The first transparent wires are disposed in the light-transmitting area, each of the first transparent wires includes a resistance adjustment portion, and each resistance adjustment portion is respectively connected to one end of one of the electrode strip groups, and electrically connected to the first electrode strip group and the first The resistance adjusting portions of the two electrode strip groups respectively include a zigzag line segment, wherein the length of the zigzag line segment electrically connected to the first electrode strip group is longer than the zigzag line segment electrically connected to the second electrode strip group. The electrode string groups are respectively disposed in the light-transmitting area along a second direction different from the first direction, and the electrode string groups and the electrode strip groups are interlaced.

To achieve the above object, the present invention discloses a touch panel having a light-transmitting area and an opaque area, and the touch panel includes a plurality of electrode strip sets, a plurality of electrode strip sets, a plurality of first transparent wires, and a plurality of strips Electrode tandem group. The electrode strip groups are respectively disposed in the light-transmitting area along the first direction, wherein the electrode strip groups include the first electrode strip group and the second electrode strip group, and the first electrode strip group is located between the second electrode strip group and the pad area between. The first transparent wires are disposed in the light-transmitting area, and each of the first transparent wires is respectively connected to one end of one of the electrode strip groups, wherein each of the first transparent wires further includes a lead portion, along the first The two directions extend into the opaque region. One of the lead portions includes a first portion and a second portion, and the width of the first portion in the first direction is different from the width of the second portion in the first direction. The electrode string groups are respectively arranged in the light-transmitting area along the second direction, and the electrode string groups and the electrode strip groups staggered.

In order to achieve the above purpose, the present invention discloses a touch panel having a light-transmitting area and an opaque area. The opaque area includes a pad area on the first side of the light-transmitting area, and the touch panel includes a plurality of electrodes A strip group, a plurality of first transparent wires, a plurality of first opaque wires, a plurality of electrode series groups, and a plurality of second opaque wires. The electrode strip groups are respectively disposed in the light-transmitting area along the first direction, wherein the electrode strip groups include the first electrode strip group and the second electrode strip group, and the first electrode strip group is located between the second electrode strip group and the pad area between. The first transparent wires are disposed in the light-transmitting area, and each first transparent wire is respectively connected to one end of one of the electrode strip groups. The first opaque wires are disposed in the opaque area on the first side of the light-transmitting area, and each first opaque wire is connected to one end of one of the first transparent wires, wherein each first opaque wire and the corresponding first The transparent wire has a first connection area, and the first connection areas are arranged along the first direction. The electrode string groups are respectively disposed in the light-transmitting area along the second direction, and the electrode string groups and the electrode strip groups are staggered. The second opaque wire is disposed in the opaque region on the first side of the transparent region. Each electrode string group includes a first electrode string and a second electrode string, each second opaque wire is electrically connected to one of the first electrode string and the second electrode string, and each second opaque wire is The corresponding first electrode string or the corresponding second electrode string has a second connection area, and one of the second connection areas overlaps one of the first connection areas.

In the touch panel of the present invention, the transparent conductive wire formed by the transparent conductive material is used to electrically connect each electrode strip group, so that the transparent conductive wire can be disposed in the light-transmitting area, so the width of the light-transmitting area can be increased, Moreover, the number of opaque wires disposed on the left and right sides of the light-transmitting area can be reduced, which can further reduce the width of the opaque area and the width of the border of the touch panel. In addition, because the transparent conductive wires made of transparent conductive materials tend to have significantly different equivalent resistances due to different lengths, so that the equivalent resistances of the transparent conductive wires are significantly different, so in the touch panel of the present invention, through The length of the zigzag line of the transparent conductor connecting the electrode strip group closer to the first side and/or the second side of the light-transmitting area is designed to be longer than the distance connecting the first side and/or the second side of the light-transmitting area The zigzag line of the transparent wire of the electrode strip group The length can make up for the difference in the equivalent resistance of the lead portion of each transparent wire, thereby making it possible to equalize the equivalent resistance of each transparent wire.

TP, TP1, TP2, TP3, TP4, TP5, TP6, TP7 ‧‧‧ touch panel

DD‧‧‧Display device

TD‧‧‧Touch display device

DS‧‧‧Display

TR‧‧‧Transparent area

OR‧‧‧opaque area

S1‧‧‧First side

S2‧‧‧Second side

S3‧‧‧The third side

S4‧‧‧The fourth side

Sub‧‧‧Substrate

SL‧‧‧ masking layer

TL‧‧‧Touch layer

AL1, AL2‧‧‧adhesive layer

RT‧‧‧Touch area

RP‧‧‧ surrounding area

PR‧‧‧pad area

ELM1‧‧‧First electrode strip set

ELM2‧‧‧Second electrode strip set

ELM3‧‧‧third electrode strip set

ELM4‧‧‧The fourth electrode strip set

ELM5‧‧‧ fifth electrode strip set

ELM6 ‧‧‧ sixth electrode strip set

ESS‧‧‧electrode series

D1‧‧‧First direction

D2‧‧‧Second direction

Z‧‧‧ Looking down

TT2‧‧‧Second transparent wire

PT‧‧‧Part

PB‧‧‧Part

P1, P41‧‧‧Lead part

P2, P42‧‧‧ Resistance adjustment section

P2L‧‧‧Zigzag line

P21‧‧‧The first line segment

P22‧‧‧Second line segment

P23‧‧‧block

BP‧‧‧Pad

GT‧‧‧Ground

TL1‧‧‧The first transparent conductive layer

TL2‧‧‧Second transparent conductive layer

OL‧‧‧opaque conductive layer

OL1‧‧‧The first opaque conductive layer

OL2‧‧‧Second opaque conductive layer

EL‧‧‧electrode strip

ES1‧‧‧First electrode series

ES2‧‧‧Second electrode series

CS1‧‧‧First connection line

CS2‧‧‧Second connection line

EM‧‧‧electrode set

E‧‧‧electrode

ELA‧‧‧Electrode Department

ELA1‧‧‧Strip

ELB, ELB4 ‧‧‧ shielding part

TO‧‧‧Touch

PP41, PP61‧Part I

PP42, PP62‧Part II

PP43, PP44‧Notch

CR1‧‧‧First connection area

CR2‧‧‧Second connection area

CR3‧‧‧third connection area

CR4‧‧‧The fourth connection area

CR5‧‧‧Fifth connection area

G1, G2‧‧‧spacing

R, R1, R2, R3, R4

ELM, ELMa, ELMb, ELMc, ELMd, ELMe, ELMf, ELMg, ELMh, ELMi, ELMj

TT1, TT1a, TT1b, TT41, TT41a, TT41b, TT41c, TT41d, TT41e, TT41f, TT51, TT61, TT71

OT1, OT2, OT3, OT71, OT72, OT73, OT74, OT75

TU, TU1, TU2, TU3, TUa, TUb ‧‧‧ touch unit

FIG. 1 is a schematic diagram of a touch display device using the touch panel of the present invention.

FIG. 2 is a schematic top view of the touch panel according to the first embodiment of the invention.

FIG. 3 is a schematic top view of the transparent wire connected to the upper electrode strip set according to the first embodiment of the present invention.

FIG. 4 is a schematic top view of the transparent wire connected to the lower electrode strip set according to the first embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view along the cross-sectional line A-A′ of FIG. 4.

FIG. 6 is a schematic top view of the electrode strip set and the electrode string set in the touch area according to the first embodiment of the present invention.

FIG. 7 is an enlarged schematic view of the area R across the touch area, the peripheral area, and the opaque area of the touch panel of the first embodiment of the present invention corresponding to FIG. 2.

FIG. 8 is a schematic diagram illustrating the position of the sensing quantity sensed by the touch unit when the user’s touch position is on the first transparent wire.

FIG. 9 is a schematic top view of a touch panel according to a second embodiment of the invention.

FIG. 10 is a schematic top view of a touch panel according to a third embodiment of the invention.

FIG. 11 is a schematic partial top view of a touch panel according to a fourth embodiment of the invention.

FIG. 12 is a schematic partial top view of a touch panel according to a fifth embodiment of the invention.

FIG. 13 is a schematic partial top view of a touch panel according to a sixth embodiment of the invention.

FIG. 14 is a schematic top view of a touch panel according to a seventh embodiment of the invention.

FIGS. 15A to 15D respectively show enlarged schematic views of the regions R1, R2, R3, and R4 in FIG. 14.

In order to enable those skilled in the art to further understand the present invention, the embodiments of the present invention are specifically enumerated below, and the constitutional content of the present invention and the desired effects are described in detail with reference to the drawings. It should be noted that the drawings are simplified schematic diagrams. Therefore, only the components and combinations related to the present invention are shown to provide a clearer description of the basic architecture of the present invention, and the actual components and layout may be more complicated. In addition, for the convenience of explanation, the elements shown in the drawings of the present invention are not drawn in proportions such as the actual number, shape, and size, and the detailed proportions can be adjusted according to the design requirements.

Please refer to FIG. 1, which illustrates a schematic diagram of a touch display device using the touch panel of the present invention. As shown in FIG. 1, the touch panel TP of the present invention can be applied to a display device DD to constitute a touch display device TD. The touch panel TP can be disposed on the display surface DS of the display device DD to provide a touch sensing function. The touch panel TP may have a light-transmitting area TR and an opaque area OR, wherein the light-transmitting area TR allows light to pass through, and thus corresponds to the display area of the display device DD to allow the user to remove the light from the light-transmitting area TR Of the touch panel TP sees the screen displayed by the display device DD, and the opaque area OR will block the light penetration, so the touch panel TP in the opaque area OR can be used to shield the touch panel TP The light-transmitting lines and the peripheral lines and frames that are not used for displaying images in the display device DD. In an embodiment, the opaque region OR may surround the transparent region TR, but the invention is not limited thereto. In another embodiment, when both sides (for example, the left and right sides) of the touch panel TP reach a borderless frame, the opaque region OR may only be located on the first side S1 (for example, the upper side) and the second side of the transparent region TR At least one of the sides S2 (for example, the lower side).

The touch panel TP may include, for example, a substrate Sub, a shielding layer SL, and a touch layer TL, wherein the shielding layer SL is disposed on the substrate Sub to define an opaque region OR, and the shielding layer SL has an opening to define light transmission Zone TR. The substrate Sub can be used as the outermost substrate of the touch display device TD, and can include a hard substrate or a flexible substrate, such as a glass substrate, a strengthened glass substrate, a quartz substrate, a sapphire substrate, a hard substrate Cover lens, plastic substrate, flexible cover plate, flexible plastic substrate or thin glass substrate. The touch layer TL is disposed on the substrate Sub and has a touch sensing function. The touch layer TL here may include the following first transparent conductive layer and second transparent conductive layer for achieving the touch sensing function, and an opaque conductive layer electrically connected thereto, but is not limited thereto. In this embodiment, the touch layer TL may be, for example, a thin film formed with a touch element, one side surface may be adhered to the substrate Sub through the adhesive layer AL1, and the other side surface may be adhered to through the other adhesive layer AL2 On the display device DD, but not limited to this. Those skilled in the art should know that the touch layer TL can also be directly formed on the substrate Sub or the display device DD, which will not be repeated here. The application of the touch panel TP of the present invention is not limited to that shown in FIG. 1, but can also be applied to other types of devices.

Please refer to FIG. 2, which illustrates a schematic top view of the touch panel according to the first embodiment of the present invention. As shown in FIG. 2, the light-transmitting area TR may include a touch area RT and two peripheral areas RP. The portion of the touch panel TP1 located in the touch area RT has a touch sensing function, while the portion located in the peripheral area RP Some have no touch sensing function, and the peripheral areas RP are located on both sides of the touch area RT, respectively, and are adjacent to the third side S3 (for example, left side) and the fourth side S4 (for example, right side) of the light-transmitting area TR. The opaque region OR may include a pad region PR located on the first side S1 of the light-transmitting region TR for setting the pad BP, wherein the pad BP may be used to electrically connect the driving element controlling the touch panel TP1.

In this embodiment, the touch panel TP1 is located in the touch area RT, and the portion with touch sensing function may include a plurality of electrode strip groups ELM, a plurality of first transparent wires TT1, and a plurality of electrode series groups ESS, It is provided on the substrate Sub in the light transmitting area TR. Each electrode strip group ELM extends along a first direction D1, and each electrode string group ESS extends along a second direction D2 different from the first direction D1, so that each electrode string group ESS can be connected to each electrode strip group ELM Insulation and staggering to generate capacitive coupling, so that the touch panel TP1 has a touch sensing function. In order to make the electrode strip group ELM and the electrode string group ESS transparent, the electrode strip group ELM may be formed by a first transparent conductive layer, and the electrode string group ESS may be formed by a second transparent conductive layer. For example, the first transparent conductive layer may be located between the substrate Sub and the second transparent conductive layer. For example, the first transparent conductive layer and the second transparent conductive layer may include transparent conductive materials, such as oxygen Indium tin oxide (ITO), indium zinc oxide (IZO), antimony tin oxide (ATO), antimony zinc oxide (AZO), nano silver or other suitable Transparent conductive material. For example, the first transparent conductive layer and the second transparent conductive layer can be formed on two different films, and the two are bonded through the adhesive layer, and the first transparent is electrically insulated through the film and the adhesive layer as the insulating layer The conductive layer and the second transparent conductive layer, but the invention is not limited thereto. In another embodiment, the insulating layer may be an insulating layer formed by a deposition process, so that the first transparent conductive layer, the insulating layer, and the second transparent conductive layer may be sequentially deposited on the same film surface. Alternatively, the first transparent conductive layer and the second transparent conductive layer are respectively deposited on different surfaces of the thin film, thereby using the thin film as an insulating layer.

Each first transparent wire TT1 is located in the peripheral region RP, and is respectively connected to one end of an electrode strip group ELM for electrically connecting each electrode strip group ELM to a corresponding pad BP. In this embodiment, the first transparent conductive wire TT1 and the electrode strip group ELM can be formed by the same first transparent conductive layer, but it is not limited thereto. In another embodiment, the first transparent wire TT1 and the electrode strip group ELM can also be formed by different transparent conductive layers. Since each first transparent wire TT1 is formed of a transparent conductive material, it does not affect the display of the picture, but can be located in the light-transmitting region TR, that is, the first transparent wire TT1 is located in the display of the display device DD in the plan view direction Z In the district. Moreover, since the first transparent wires TT1 for electrically connecting the electrode strip groups ELM to the pads BP can be disposed in the light-transmitting region TR, they are disposed on the third side S3 (for example, the left side) and the fourth of the light-transmitting region TR The number of opaque wires in the opaque region OR of the side S4 (for example, the right side) can be reduced, thereby reducing the width of the opaque region OR, thereby reducing the frame width of the touch panel TP1 (the left and right sides of the transparent region TR The width of the opaque region OR).

In this embodiment, the electrode strip set ELM is divided into an upper part PT and a lower part PB. The first transparent wire TT1 connected to each electrode strip group ELM in the upper part PT extends from one end of the corresponding electrode strip group ELM to the first side S1 of the light-transmitting region TR; and is connected to each electrode strip group ELM in the lower part PB The first transparent conductive wire TT1 extends from one end of the corresponding electrode strip group ELM to the second side S2 of the light-transmitting region TR relative to the first side S1. According to this, each first transparent wire TT1 extends to the opaque region OR with the shortest length, In turn, it has a lower equivalent resistance. Taking 14 electrode strip groups ELM as an example, the 8 electrode strip groups ELM from the first side S1 of the translucent area TR can be regarded as the upper part PT, and the remaining 6 electrode strip group ELMs are the lower part PB, But it is not limited to this. Please refer to Figure 3 and Figure 4. FIG. 3 shows a top schematic view of the transparent wire TT1 connected to the upper part PT electrode strip group ELM of the first embodiment of the present invention, and FIG. 4 shows a transparent wire connected to the lower part PB electrode strip group ELM of the first embodiment of the present invention Top view of TT1. As shown in FIGS. 3 and 4, for example, the electrode strip group ELM may include a first electrode strip group ELM1, a second electrode strip group ELM2, a third electrode strip group ELM3 and a fourth electrode strip Group ELM4, the first electrode strip group ELM1 and the second electrode strip group ELM2 are located in the upper part PT, the first electrode strip group ELM1 is located between the second electrode strip group ELM2 and the pad area PR, that is, the first electrode strip group ELM1 The first transparent conductive wire TT1 connected to the first electrode strip group ELM1 and the second electrode strip group ELM2 is closer to the first side S1 of the transparent region TR than the second electrode strip group ELM2 is adjacent to the pad area PR. The third electrode strip group ELM3 and the fourth electrode strip group ELM4 are located in the lower portion PB. The third electrode strip group ELM3 is closer to the second side S2 of the light-transmitting region TR than the first side S1, and the fourth electrode strip group ELM4 is located at the The first transparent conductive wire TT1 connected between the third electrode strip group ELM3 and the second side S2 of the transparent region TR and connected to the third electrode strip group ELM3 and the fourth electrode strip group ELM4 extends to the second side of the transparent region TR S2.

Each first transparent wire TT1 may include a lead portion P1 located in the light-transmitting region TR. Each lead portion P1 extends from an end close to the corresponding electrode strip group ELM into the opaque region OR, and most of the lead portion P1 extends along the second direction D2. In order to electrically connect the first transparent wires TT1 to the electrode strip groups ELM at different positions, when the widths of the lead portions P1 are the same, the lengths of the lead portions P1 need to be different from each other. Compared with metal materials, the resistivity of the transparent conductive material is significantly higher, and the lead portion P1 made of the transparent conductive material is likely to have significantly different equivalent resistances due to the different lengths. In order to equalize the equivalent resistance of each first transparent wire TT1, each first transparent wire TT1 in this embodiment may further include a resistance adjustment part P2, and the difference in length of each resistance adjustment part P2 is used to compensate for the difference of each lead part P1, etc. Effective resistance difference. The resistance adjusting portion P2 of this embodiment is connected to one end of the lead portion P1 and the corresponding electrode strip group Between one end of the ELM, but not limited to this.

For the first transparent wire TT1 connected to the electrode strip group ELM of the upper portion PT, since it extends to the first side S1 of the light-transmitting region TR provided with the pad region PR, the connection is closer to the pad region PR The length of the lead portion P1 of the electrode strip group ELM is shorter than the length of the lead portion P1 of the first transparent wire TT1 connecting the electrode strip group ELM far away from the pad area PR. In order to make up for the difference in equivalent resistance between the plural lead portions P1 of the upper part PT, the length of the resistance adjustment portion P2 connecting the electrode strip group ELM closer to the pad area PR is longer than connecting the electrode strip group farther from the pad area PR The length of the resistance adjustment portion P2 of the ELM is long. For the first transparent wire TT1 connected to the electrode strip group ELM of the lower part PB, since it extends to the second side S2 of the light-transmitting region TR, the electrode closer to the second side S2 of the light-transmitting region TR is connected The length of the lead portion P1 of the strip group ELM will be shorter than the length of the lead portion P1 of the first transparent wire TT1 connecting the electrode strip group ELM farther from the second side S2 of the light-transmitting region TR. In order to make up for the difference in equivalent resistance between the plurality of lead portions P1 of the lower part PB, the length of the resistance adjustment portion P2 of the electrode strip group ELM connected closer to the second side S2 of the light-transmitting area TR is shorter than the connection distance of the light-transmitting area TR The length of the resistance adjustment portion P2 of the electrode strip group ELM farther from the side S2 is longer. In this way, the sum of the equivalent resistances of the lead portion P1 and the resistance adjustment portion P2 corresponding to each first transparent wire TT1 can be nearly the same, so as to reduce the difference in the equivalent resistance of each first transparent wire TT1. In other words, the equivalent resistance of each first transparent wire TT1 can be uniformed, thereby reducing the unevenness of the touch signal caused by the difference in the equivalent resistance of the first transparent wires TT1. For example, in the upper part PT, the length of the lead portion P1 of the first transparent wire TT1 connected to the first electrode strip group ELM1 is shorter than the length of the lead portion P1 of the first transparent wire TT1 connected to the second electrode strip group ELM2 And the length of the resistance adjustment part P2 connected to the first electrode strip group ELM1 is longer than the resistance adjustment part P2 connected to the second electrode strip group ELM2. In the lower part PB, the length of the lead portion P1 of the first transparent wire TT1 connected to the third electrode strip group ELM3 is longer than the length of the lead portion P1 of the first transparent wire TT1 connected to the fourth electrode strip group ELM4, and is connected to the The length of the resistance adjustment portion P2 of the three-electrode strip group ELM3 is shorter than the resistance adjustment portion P2 connected to the fourth electrode strip group ELM4.

In this embodiment, the resistance adjusting portion P2 may include a meander line segment P2L, such as a serpentine line segment, and the length of the resistance adjusting portion P2 may be changed by adjusting the length of the meander line segment P2L. Therefore, the length of the zigzag line segment P2L electrically connected to the upper part PT electrode strip group ELM may be longer as the distance between the electrode strip group ELM and the pad area PR is closer, and electrically connected to the zigzag of the lower part PB electrode strip group ELM The length of the line segment P2L may be longer as the distance between the electrode strip group ELM and the pad area PR increases. Further, each zigzag line segment P2L may include at least one first strip line segment P21. When the zigzag line segment P2L includes a plurality of first strip line segments P21, the first strip line segments P21 may be parallel to each other, for example, extending along the second direction D2, and the zigzag line segment P2L may further include at least one second strip line segment P22 is used to connect the first line segment P21. The second strip line segment P22 extends along a direction different from the second direction D2, for example, along the first direction D1. Each resistance adjusting part P2 may further include a block P23 connected between one end of the zigzag line P2L and one end of the corresponding electrode strip group ELM, and the zigzag line P2L and the block P23 may constitute the resistance adjusting part P2. Since the width of the block portion P23 in the second direction D2 is greater than the line width of the zigzag line segment P2L, the equivalent resistance of the resistance adjusting portion P2 is mainly determined by the equivalent resistance of the zigzag line segment P2L. In this way, the difference in the equivalent resistance of the lead portion P1 can be compensated by differentiating the length of the meander line segment P2L, so as to achieve the equalization of the equivalent resistance of the first transparent wire TT1.

In this embodiment, the width of the resistance adjusting portion P2 in the first direction D1 may be the same as each other, so the width of the block portion P23 connected to the electrode strip group ELM closer to the pad area PR in the first direction D1 It is smaller than the width in the first direction D1 of the block portion P23 connected to the electrode strip group ELM far away from the pad area PR. Specifically, each resistance adjusting portion P2 can pass through the same size of the bulk conductive material, and a slit SL is formed in the bulk conductive material by cutting, such as laser cutting, thereby forming the zigzag line segment P2L and the bulk部P23. The length and the number of the slits SL can determine the length and the number of the first linear segment P21, thereby the desired length of the zigzag line segment P2L can be produced. The equivalent resistance of each meander line segment P2L can be adjusted through the length and width of the first strip line segment P21 and the length and width of the second strip line segment P22. For example, each first strip line segment P21 may have the same width, and each second strip line segment P22 It may have the same width and length, so by designing the number and length of the first strip line segments P21 of each resistance adjusting portion P2 to be different and/or designing the number of second strip line segments P22 of each resistance adjusting portion P2 When they are not the same, the length of each meander line segment P2L can be caused to be different to achieve the difference in equivalent resistance.

In this embodiment, for the upper portion PT, the line width of the lead portion P1 connected to the electrode strip group ELM (eg, the first electrode strip group ELM1) closer to the pad area PR is smaller than that connected to the distance pad area PR The line width of the lead portion P1 of the electrode strip group ELM (for example, the second electrode strip group ELM2) that is far away is used to equalize the thickness of each transparent wire through the difference in the line width of the lead portion P1 and the length difference of the resistance adjusting portions P2 Equivalent resistance. Similarly, for the lower portion PB, the line width of the lead portion P1 connected to the electrode strip group ELM (for example, the fourth electrode strip group ELM4) closer to the second side S2 of the light-transmitting region TR may be smaller than that connected to the distance light transmission The line width of the lead portion P1 of the electrode strip group ELM (for example, the third electrode strip group ELM3) farther from the second side S2 of the region TR, but the present invention is not limited thereto. In another embodiment, part or all of the lead portions P1 may have the same line width.

In this embodiment, the resistance adjustment portion P2 of the first transparent wire TT1 connected to the electrode strip group ELM located in the center of the light-transmitting area TR does not have a meander line segment, and the length of the lead portion P1 of the first transparent wire TT1 is longer than other The length of the lead portion P1 of the first transparent wire TT1 is long. Since the first transparent wires TT1 connected to the electrode strip group ELM of the upper part PT and the lower part PB can extend to the first side S1 and the second side S2 of the light-transmitting region TR, respectively, they are connected to the electrode at the center of the light-transmitting region TR The equivalent resistance of the lead portion P1 of the first transparent wire TT1 of the strip group ELM will be greater than the equivalent resistance of the lead portion P1 of the other first transparent wires TT1. Under the condition that the equivalent resistance of each first transparent wire TT1 is unified, the design of the first transparent wire TT1 connected to the electrode strip group ELM located in the center of the light-transmitting area TR without the zigzag line segment can effectively reduce the The equivalent resistance of a transparent wire TT1. For example, the electrode strip group ELM may further include at least one sixth electrode strip group ELM6. The first electrode strip group ELM1 and the second electrode strip group ELM2 are located between the sixth electrode strip group ELM6 and the pad area PR. In this embodiment, the sixth electrode strip group ELM6 may be the electrode strip group ELM located in the center of the light transmitting area TR. For example, the electrode strip group ELM may include two sixth electrode strip groups ELM6, and the sixth electrode strip group ELM6 is the two-electrode strip group ELM closest to the lower part PB in the upper part PT, but is not limited thereto. The first transparent wire TT1 connected to the sixth electrode strip group ELM6 may include a lead portion P1 and a block portion P23, and one end of the lead portion P1 is directly in contact with and connected to the block portion P23. The width of the block portion P23 in the first direction D1 may be the same as the width of the resistance adjustment portion P2 of the other first transparent wires TT1 in the first direction D1. In another embodiment, the resistance adjustment portion P2 of the first transparent wire TT1 connected to the sixth electrode strip group ELM6 may also have a meander line segment P2L.

In this embodiment, as shown in FIG. 2, the first transparent conductive wire TT1 can be divided into a first transparent conductive wire TT1a and a first transparent conductive wire TT1b, and the first transparent conductive wire TT1a and the first transparent conductive wire TT1b are respectively located in the electrode strip set The two opposite sides of the ELM (left and right sides). In this embodiment, each electrode strip group ELM connected to the corresponding first transparent wire TT1a and each electrode strip group ELM connected to the corresponding first transparent wire TT1b are alternately arranged in sequence along the second direction D2, that is, two adjacent electrodes The strip group ELM is respectively connected to the first transparent conductor TT1a and the first transparent conductor TT1b on both sides of the electrode strip group ELM, so that the first transparent conductor TT1 can be evenly arranged on both sides of the electrode strip group ELM to avoid the touch panel TP1 The visual asymmetry caused by the inconsistent width of the two sides. For example, the electrode strip group ELM further includes a fifth electrode strip group ELM5, which is adjacent to the first electrode strip group ELM1, and the electrode strip group ELM is located on the first transparent wire TT1a connected to the first electrode strip group ELM1 and connected to the first Between the first transparent wires TT1b of the five-electrode strip group ELM5.

Please continue to refer to Figure 2. The touch panel TP1 of this embodiment may further include at least one opaque wire OT1 and at least one opaque wire OT2, which are disposed in the opaque region OR for extending the first transparency to the second side S2 of the transparent region TR The wire TT1 is electrically connected to the pad BP in the pad area PR. The first transparent wire TT1a is disposed between the opaque wire OT1 and the electrode strip group ELM, and the opaque wire OT1 extends from the second side S2 of the light-transmitting area TR through the third side S3 to the pad area PR of the first side S1, and The first transparent wire TT1b is disposed between the opaque wire OT2 and the electrode strip group ELM, and the opaque wire OT2 extends from the second side S2 of the light-transmitting area TR through the fourth side S4 to the pad area PR of the first side S1. Connect the lower part of PB The number of first transparent wires TT1a of the electrode strip group ELM is the same as the number of opaque wires OT1, and the number of first transparent wires TT1b of the electrode strip group ELM connected to the lower part PB is the same as the number of opaque wires OT2. Thereby, the electrode strip group ELM in the lower part PB can be electrically connected to the pad BP in the pad area PR through the opaque wire OT1 and the opaque wire OT2, respectively. It is worth noting that the opaque conductive wire OT1 and the opaque conductive wire OT2 can be formed by an opaque conductive layer. The opaque conductive layer can include, for example, a metal material, such as silver, so the resistivity of the opaque conductive wire OT1 and the opaque conductive wire OT2 can be much smaller than that of forming the first transparent wire The resistivity of the transparent conductive material of TT1 and the electrode strip group ELM makes the equivalent resistance of the opaque wire OT1 and the opaque wire OT2 negligible relative to the equivalent resistance of the first transparent wire TT1. Therefore, in this embodiment, the first transparent wire TT1 connected to the electrode strip group ELM in the lower portion PB can be designed to extend to the second side S2 of the light-transmitting region TR, thereby reducing the equivalent resistance of the first transparent wire TT1.

The touch panel TP1 of this embodiment may further include a plurality of opaque wires OT3 disposed in the opaque area OR of the first side S1 of the light-transmitting area TR for connecting and extending to the first side S1 of the light-transmitting area TR, respectively The first transparent wire TT1, whereby the electrode strip set ELM in the upper part PT can be electrically connected to the pad BP. In addition, the touch panel TP1 of this embodiment may optionally further include at least one ground trace GT surrounding the light-transmitting region TR to prevent static electricity from damaging the internal circuit of the touch panel TP1.

Please refer to FIG. 5, which shows a schematic cross-sectional view along the cross-sectional line A-A' of FIG. As shown in FIG. 5, the first transparent wire TT1 of this embodiment is formed by the first transparent conductive layer TL1, the opaque wire OT1 is formed by the opaque conductive layer OL, and part of the opaque conductive layer OL can be directly formed on the first A transparent conductive layer TL1, so that the opaque wire OT1 can be directly electrically connected to the corresponding first transparent wire TT1, but is not limited thereto. For example, when the number of opaque wires OT1 is plural and is composed of silver, the opaque wire OT1 can be formed into a single opaque wire with a wider width first, and then the opaque wire can be cut into multiple pieces by laser cutting. An opaque wire OT1. Similarly, the opaque wire OT2 can also be formed in the same manner. In another embodiment, the opaque conductive layer OL may also be formed before the first transparent conductive layer TL1 and between a portion of the first transparent conductive layer TL1 and the substrate Sub.

Please refer to Figure 6 and Figure 7, and with Figure 2. FIG. 6 shows a schematic top view of the electrode strip set and the electrode tandem set of the first embodiment of the present invention, FIG. 7 shows the touch panel of the first embodiment of the present invention corresponding to FIG. 2 across the touch area RT, An enlarged schematic view of the area R of the peripheral area RP and the opaque area OR. As shown in FIGS. 2, 6 and 7, each electrode strip group ELM of this embodiment includes two electrode strips EL separated from each other, and the electrode strips EL of each electrode strip group ELM can pass through the corresponding transparent wires They are electrically connected to each other, for example, through the block portion P23 of the first transparent wire. Each electrode string group ESS may include a first electrode string ES1 and a second electrode string ES2, each first electrode string ES1 and each second electrode string ES2 respectively include a plurality of electrode groups EM electrically connected to each other , Wherein the electrode groups EM are arranged in an array, the electrode groups EM of each electrode string group ESS are arranged in the same row, the electrode groups EM of each first electrode string ES1 are located in odd columns, and the electrode groups of each second electrode string ES2 EM is in even columns. In addition, each first electrode string ES1 includes a plurality of first connection line segments CS1, and each first connection line segment CS1 is respectively connected to two adjacent electrode groups EM in each first electrode string ES1. Each second electrode series ES2 includes a plurality of second connection line segments CS2, and each second connection line segment CS2 connects two adjacent electrode groups EM in each second electrode series ES2. In this embodiment, the first connection line segment CS1 and the second connection line segment CS2 are respectively located on the right side and the left side of the electrode group EM, but it is not limited to this, and vice versa. The column direction and the row direction of the array may be, for example, the first direction D1 and the second direction D2, but it is not limited thereto. Each electrode strip group ELM overlaps the electrode group EM of two adjacent rows in the plan view direction Z, and two adjacent electrode strip groups ELM overlap the electrode group EM of the same row in the plan direction Z. Specifically, the electrode group EM in the first column of each row and the electrode group EM in the last column of each row respectively include an electrode E, and each of the remaining electrode groups EM includes at least two electrodes E, arranged along the second direction D2 to make the electrode E It can also be arranged in an array. The electrodes E of each electrode group EM are separated from each other but electrically connected. Each electrode strip EL overlaps with the same row of electrodes E in the same row of electrode groups EM in a plan view direction Z, so that each electrode strip EL and the corresponding overlapped electrode E are capacitively coupled to each other to form a touch unit TU. Therefore, the touch area RT of the touch panel TP1 can be formed by the touch unit TU, and the peripheral area RP is an area outside the touch unit TU. In this embodiment, each electrode strip EL may include a plurality of electrode portions ELA, respectively corresponding to the corresponding electrode E One of them overlaps, and the boundary between the touch area RT and the peripheral area RP can be defined through the boundary where the electrode portion ELA contacts the first transparent wire TT1. For example, the electrode portion ELA may be formed by connecting a plurality of strip-shaped portions ELA1, for example, formed in a grid shape. Each electrode strip EL of this embodiment may optionally further include a plurality of shielding portions ELB, and each electrode portion ELA and each shielding portion ELB are alternately connected in series along the first direction D1 in sequence, but not limited to this. In each electrode strip EL of this embodiment, the width of the touch unit TU closest to the peripheral area RP (closest to the first transparent conductive wire TT1) in the first direction D1 may be smaller than that of the touch unit not closest to the peripheral area RP The width of the TU in the first direction D1. In this case, in order to equalize the sensing amount of each touch unit TU, the width of the strip portion ELA1 of the electrode portion ELA closest to the peripheral area RP may be larger than the strip portion ELA1 of the electrode portion ELA not closest to the peripheral area RP The width. In another embodiment, each electrode strip group ELM may be a single electrode strip overlapping two adjacent column electrode groups EM. In yet another embodiment, each electrode strip group ELM may be composed of only a first electrode strip, each electrode string group ESS is composed of only a second electrode strip, and each first electrode strip and each second electrode strip may be They are coupled to each other to form a touch unit. The design of the electrode strip group and the electrode series group constituting the touch unit of the present invention is not limited to the above, and may also be other types of touch panels.

In addition, one of the resistance adjusting portions P2 of the present embodiment may overlap one of the first connection line segment CS1 and the second connection line segment CS2. Specifically, the resistance adjustment portion P2 of the first transparent wire TT1a may overlap the second connection line CS2 in the electrode string group ESS nearest to the first transparent wire TT1a, and the resistance adjustment portion P2 of the first transparent wire TT1b may It overlaps with the first connection line segment CS1 in the electrode string group ESS closest to the first transparent wire TT1b. It is worth noting that the resistance adjustment portion P2 of this embodiment is made using the shielding portion that is originally closest to the corresponding first transparent wire TT1, so the width of the resistance adjustment portion P2 in the first direction D1 can be equal to that of the shielding portion ELB The width in the first direction D1 is the same. The advantage of this design is that the shielding portion ELB can achieve the purpose of equalizing the equivalent resistance of each first transparent wire TT1 while being almost lossless and its shielding effect.

The following further describes that the design of the resistance adjusting portion P2 of this embodiment does not affect the sensing position in the second direction D2 detected by the row of touch units TU closest to the peripheral area RP. Please refer to section FIG. 8 is a schematic diagram illustrating the position of the sensing amount sensed by the touch unit when the user’s touch position is on the first transparent wire. The sensing amount shown in FIG. 8 is only an example, and the present invention does not This is limited. As shown in FIGS. 6 to 8, the touch unit TU1 is a touch unit TU adjacent to the peripheral area RP, and the touch unit TU2 is a touch unit TU surrounding the touch unit TU1 and constitutes the electrode E of the touch unit TU3 It is electrically connected to the electrode E constituting the touch unit TU1, and the first transparent wire TT1 electrically connected to the touch unit TU1 overlaps the touch object TO when the user touches the touch panel TP1. When the center point of the touch object TO of the user touching the touch panel TP1 is approximately at the boundary between the touch unit TU1 and the peripheral area RP, the sensing amount of the touch unit TU1 can reach, for example, 368 signals, away from the touch The amount of sensing of the touch unit TU3 of the unit TU1 can be, for example, 15 signals due to the capacitive coupling of the touch object TO with its corresponding first transparent wire TT1 and the electrode E of the touch unit TU1 electrically connected to its electrode E. The touch panel TP1 uses the touch unit TU1 with the largest inductance as the center point of the nine-grid grid to obtain the inductance of each touch unit TU of the nine-grid grid as the basis for calculating the touch position, and does not consider the touch unit TU outside the nine-grid grid. The sensed quantity. In this example, the touch panel TP1 performs position calculation based on the sensed quantities sensed by the touch unit TU1 and the touch unit TU2, and the touch unit TU3 located outside the Jiugong is not included in the calculation. Therefore, although the touch unit TU3 has a certain amount of sensing, its position is not within the nine-square grid, so that the amount of sensing generated by the touch unit TU3 will not affect the touch panel TP1 detecting the touch object TO in the second direction D2 Position accuracy. In this way, if the touch object TO moves linearly along the second direction D2, the sensing amount of the touch unit TU3 will not affect the accuracy of the measured straight line. In this embodiment, since the width of the peripheral area RP in the first direction D1 is less than half of the touch object TO, when the center point of the touch object TO is approximately at the boundary between the touch unit TU1 and the peripheral area RP, Part of the touch object TO may overlap the opaque area OR. For example, the width of the peripheral region RP can reach about 1.9 mm.

It is worth noting that through the design of the touch panel TP1 described above, the number of opaque wires OT1 and OT2 in this embodiment can be reduced. As shown in FIG. 1, since the opaque wire OT1 and the opaque wire OT2 are included in the touch layer TL, the overlap between the touch layer TL and the opaque region OR The area can be reduced, so that when the display device DD is pasted to the touch panel TP, it can be directly adhered to the substrate Sub instead of being indirectly adhered to the substrate Sub through the touch layer TL. In this way, when the display device DD needs to be separated from the substrate Sub, the touch layer TL will not adhere to the display device DD due to the strong adhesion with the display device DD, and the touch layer TL is easier to display Device DD is separated.

Please refer to FIG. 9, which illustrates a schematic top view of a touch panel according to a second embodiment of the invention. As shown in FIG. 9, the difference between the touch panel TP2 of this embodiment and the first embodiment is that the touch panel TP2 of this embodiment may further include a plurality of second transparent wires TT2, respectively connected to the electrode strip group ELM At the other end of one of them, the two ends of the same electrode strip group ELM can be connected to the first transparent wire TT1 and the second transparent wire TT2, respectively, so that the same electrode strip group ELM can be connected to the same through two transparent wires Signal end. Therefore, when the driving signal is actually sent, it is sent to the first transparent wire TT1 and the second transparent wire TT2 at the same time. Compared with the first embodiment, the equivalent resistance between each electrode strip group ELM and the pad BP of this embodiment can be reduced, or between the electrode strip group ELM and the pad BP of this embodiment When the equivalent resistance is the same as that in the first embodiment, the width of the first transparent wire TT1 and the width of the second transparent wire TT2 may be smaller than the width of the first transparent wire in the first embodiment. In this embodiment, the structure of the second transparent wire TT2 may be symmetrical to the structure of the corresponding first transparent wire TT1, so in the upper part PT, the lead portion P1 of the second transparent wire TT2 connected to the first electrode strip group ELM1 Is shorter than the length of the lead portion P1 of the second transparent wire TT2 connected to the second electrode strip group ELM2, and the length of the resistance adjustment portion P2 of the second transparent wire TT2 connected to the first electrode strip group ELM1 is longer than that of the connection The resistance adjusting portion P2 of the second transparent conductive wire TT2 of the two-electrode strip group ELM2. In the lower part PB, the length of the lead portion P1 of the second transparent wire TT2 connected to the third electrode strip group ELM3 is longer than the length of the lead portion P1 of the second transparent wire TT2 connected to the fourth electrode strip group ELM4, and is connected to the The length of the resistance adjustment portion P2 of the second transparent conductive wire TT2 of the three-electrode strip group ELM3 is shorter than the resistance adjustment portion P2 of the second transparent conductive wire TT2 connected to the fourth electrode strip group ELM4. In this embodiment, the second transparent wire TT2 connected to the electrode strip group ELM of the lower part PB can also be electrically connected to the pad BP through the opaque wire OT1 and the opaque wire OT2, so the The sum of the number of the first transparent conductor TT1 and the second transparent conductor TT2 of the electrode strip group ELM of the next part PB is the same as the sum of the number of the opaque conductor OT1 and the opaque conductor OT2.

Please refer to FIG. 10, which illustrates a schematic top view of a touch panel according to a third embodiment of the present invention. As shown in FIG. 10, the difference between the touch panel TP3 of this embodiment and the first embodiment is that the touch panel TP3 of this embodiment does not include opaque wires. In other words, the electrode strip group ELM of this embodiment is not divided into an upper part and a lower part, and all the first transparent conductive wires TT1 extend from one end of the electrode strip group ELM to the first side S1 of the light-transmitting region TR, therefore, There is no need for opaque wires, so that the border of the touch panel TP3 of this embodiment can be effectively reduced to achieve a situation close to no border.

Please refer to FIG. 11, which illustrates a partial schematic top view of a touch panel according to a fourth embodiment of the invention. To clearly show the first transparent wires TT41, FIG. 11 only shows the structures of the first transparent wires TT41 connected to the upper part of the PT electrode strip group ELM and the two rows of touch units TU nearest to the first transparent wires TT41. The invention is not limited to this. As shown in FIG. 11, the difference between the touch panel TP4 of this embodiment and the above embodiment is that the lead portion P41 of the first transparent wire TT41 of this embodiment has an uneven width, so that the lead portion P41 can be used without The area with the first transparent conductive layer is widened to reduce its equivalent resistance, thereby making up for the difference between the equivalent resistances of the first transparent wires TT41. That is to say, each lead portion P41 may have a portion extending into the opaque region OR along the second direction D2, and this portion of one of the lead portions P41 includes a first portion PP41 and a second portion PP42, and The width of the first part PP41 in the first direction D1 is different from the width of the second part PP42 in the first direction D1. In this embodiment, the first transparent wires TT41 connected to the electrode strip group ELM are alternately disposed on both sides of the electrode strip group ELM along the second direction D2, so that the first connected to the two adjacent electrode strip groups ELM respectively The transparent wires TT41 are respectively located on two opposite sides of the electrode strip group ELM. For example, the electrode strip groups ELMa, ELMb, ELMc, ELMd, ELMe, and ELMf of the upper part PT may be arranged in sequence along the second direction D2, wherein the first transparent wires TT41a connected to the electrode strip groups ELMa, ELMc, ELMe, TT41c and TT41e are adjacent to the third side S3 of the light-transmitting region TR (located on the same side of the electrode strip group ELM). Since the electrode strip group ELMe is away from the light transmission area The first side S1 of TR is farther than the electrode strip group ELMc, so the length of the first transparent wire TT41e will be greater than the length of the first transparent wire TT41c. The resistance adjusting portion P42 of the first transparent wire TT41c of this embodiment may have a notch PP43 when covering most of the first connection line segment CS1, that is, the notch PP43 may be located between two adjacent first connection line segments CS1 So that the width of the first portion PP41 of the first transparent wire TT41e corresponding to the notch PP43 in the first direction D1 may be greater than the width of the second portion PP42 not corresponding to the notch PP43 in the first direction D1. The shielding portion ELB4 of the electrode strip group ELMb closest to the third side S3 may also have another notch PP44, located between two adjacent first connecting line segments CS1, so that the first part PP41 of the first transparent wire TT41c may also be disposed in the recess In the opening PP44, the width of the first transparent portion TT41e of the first transparent wire TT41e corresponding to the opening PP44 can be widened. Moreover, since there is no other first transparent wire TT41 between the first portion PP41 and the shielding portion ELB4 of the electrode strip group ELMd and the resistance adjusting portion P42 of the first transparent wire TT41c, the shielding portion ELB4 corresponding to the electrode strip group ELMd And the width of the first portion PP41 of the resistance adjusting portion P42 of the first transparent wire TT41c may also be widened. The design of the first transparent wire TT41e can effectively reduce the equivalent resistance of the first transparent wire TT41e. It is worth mentioning that, in the case of equalizing the equivalent resistance of each first transparent wire TT41, the equivalent resistance of the longest first transparent wire TT41 (such as the first transparent wire TT41e) will determine the first transparent The equivalent resistance of the wire TT41, so when the equivalent resistance of the first transparent wire TT41 with the longest length is reduced, the equivalent resistance of the remaining first transparent wires TT41 can also be reduced. In some embodiments, the other first transparent wires TT41 adjacent to the third side S3 of the light-transmitting region TR may also have a first portion PP41 and a second portion PP42 with different widths. Similarly, the equivalent resistance of the first transparent wires TT41b, TT41d, and TT41f connected to the electrode strip groups ELMb, ELMd, and ELMf can also be reduced through the design of the same concept. In this way, the sensing amount obtained by the touch panel TP4 through each first transparent wire TT41 can be effectively improved, thereby improving touch accuracy. For example, the equivalent resistance of each first transparent wire TT41 can be reduced to 15 kiloohms (kohm). Compared with the equivalent resistance of each first transparent wire TT41 being 28.7 kohm, the amount of induction obtained can be increased by 30 %. In some embodiments, the position and length of the first portion PP41 and the second portion PP42 of the first transparent wire TT41 can be based on The design of the electrode series is adjusted accordingly.

In the first transparent conductive wire TT41 of this embodiment, the resistance adjusting portion P42 may not have a meander line segment, but by widening the width of the lead portion P41 with a longer length, to achieve the equalization of the equivalent resistance of each first transparent conductive wire TT41 , But the invention is not limited to this. In addition, in some embodiments, compared with the first embodiment shown in FIG. 6, the width of the shielding portion ELB4 of each electrode strip group ELM in the second direction D2 may be slightly larger or approximately equal to that of two adjacent electrodes E The width in the second direction D2, that is, the shielding portion ELB4 may be formed by connecting two adjacent shielding portions of the first embodiment to each other, thereby shielding a large number of connecting line segments.

Please refer to FIG. 12, which illustrates a partial schematic top view of a touch panel according to a fifth embodiment of the invention. As shown in FIG. 12, the difference between the touch panel TP5 of this embodiment and the fourth embodiment shown in FIG. 11 is that at least one first transparent wire TT51 of this embodiment may also include a meander line segment P2L, For example, the first transparent wire TT51 connected to the electrode strip group ELM closest to the first side S1 may include a meander line segment P2L. In other words, the first transparent conductive wire TT51 can be uniformized through the design of the meander line segment P2L and the uneven width to increase the equivalent resistance of the first transparent conductive wire TT51. The number of the first transparent wires TT51 with the meander line segment P2L can be determined according to the equivalent resistance of the first transparent wire with the longest length.

Please refer to FIG. 13, which illustrates a partial schematic top view of a touch panel according to a sixth embodiment of the invention. As shown in FIG. 13, the difference between the touch panel TP6 of this embodiment and the fourth embodiment shown in FIG. 11 is that in this embodiment, the first is connected to two adjacent electrode strip groups ELM The transparent wire TT61 is located on the same side of the electrode strip group ELM. Specifically, the first transparent wires TT61 in this embodiment may be disposed on the same side of the electrode strip group ELM (for example, all adjacent to the fourth side S4 or the third side S3 of the light-transmitting region TR). The lead part P61 of the first transparent wire TT61 connecting the electrode strip groups ELMg, ELMh and ELMi is taken as an example for further description below, but the invention is not limited thereto. In the lead portion P61 electrically connected to the electrode strip group ELMg, the first part PP61 is connected between the second part PP62 and the electrode strip group ELMg, and the first part PP61 is adjacent to the electrode strip group ELMg in the first direction D1 The distance G1 between the electrode strip groups ELMh is greater than that of the second portion PP62 connected to the electrode strip group adjacent to the electrode strip group ELMg in the first direction D1 The pitch G2 between the lead portions P61 of the ELMh. In this embodiment, the first part PP61 is disposed at the end of the electrode strip group ELMh adjacent to the electrode strip group ELMg adjacent to the fourth side S4, especially at the side of the touch unit TUa adjacent to the electrode strip group ELMg, The second part PP62 is disposed at the end of the electrode strip group ELMi that is not adjacent to the electrode strip group ELMg adjacent to the fourth side S4. Since the first transparent wires TT61 connected to each electrode strip group ELM extend from the same side of the electrode strip group ELM, the first transparent wires TT61 corresponding to the touch unit TUb adjacent to the touch unit TUa in the first direction D1 The first part PP61 is not only adjacent to the touch unit TUa in the second direction, but also provides a non-negligible amount of sensing when being touched. Therefore, if the first part PP61 is too close to the electrode strip group ELMh adjacent to the electrode strip group ELMg, when the user touches the touch unit TUa adjacent to the electrode strip group ELMg, the first part PP61 connected to the electrode strip group ELMg is touched The coupling sensing amount of the object causes the touch panel TP6 to determine that part of the touch object is located on the touch unit TUb, thereby affecting the touch accuracy. It can be seen that although the first portion PP61 of this embodiment can utilize the space between two adjacent second connecting line segments CS2, its width in the first direction D1 is greater than the width of the second portion PP62 in the first direction D1 However, by increasing the distance between the first part PP61 and the touch unit TUb electrically connected to the first part PP61 adjacent to the touch unit TUa, it is possible to effectively prevent the touch accuracy from being affected by the wider width of the lead portion P61. Similarly, the first transparent wire TT61 electrically connected to the electrode strip group ELMh and the electrode strip group ELMj may also have the same design.

Please refer to FIG. 14 and FIGS. 15A to 15D. FIG. 14 is a schematic top view of a touch panel according to a seventh embodiment of the present invention. FIGS. 15A to 15D respectively illustrate a region R1 in FIG. 14 , R2, R3 and R4 enlarged schematic. As shown in the regions R1 shown in FIGS. 14 and 15A, the opaque wires OT73 of the touch panel TP7 of this embodiment are disposed in the opaque regions OR of the first side S1 of the transparent region TR, and each of the opaque wires OT73 is respectively connected to one end of the corresponding first transparent wire TT71 (for example, the first transparent wire TT71 disposed in the peripheral region RP adjacent to the third side S3 of the light-transmitting region TR and extending from the first side S1), wherein each opaque wire The OT73 and the corresponding first transparent wire TT71 have a first connection region CR1, and the first connection regions CR1 are arranged along the first direction D1. Specifically, the touch panel TP7 is included separately Including a plurality of opaque wires OT74, disposed in the opaque region OR of the first side S1 of the transparent region TR, wherein each electrode string group ESS includes a first electrode string ES1 and a second electrode string ES2, Each opaque wire OT74 is electrically connected to the first electrode string ES1 and the second electrode string ES2, and each opaque wire OT74 and the corresponding first electrode string ES1 or the corresponding second electrode string ES2 have a second connection region CR2 , And one of the second connection regions CR2 overlaps one of the first connection regions CR1 in the plan view direction Z. Further, the opaque wire OT73 may be formed by a first opaque conductive layer OL1, the opaque wire OT74 may be formed by a second opaque conductive layer OL2, and a first opaque conductive layer OL1 and a second opaque conductive layer OL2 are provided between The insulating layer is used to electrically insulate the two, so the opaque wire OT3 and the opaque wire OT74 that overlap each other will not be electrically connected. The insulating layer may be composed of, for example, an insulating material formed by a deposition process, a film, and an adhesive layer or film. The first opaque conductive layer OL1 may be located on or under the first transparent conductive layer TL1 forming the first transparent conductive wire TT71, and the second opaque conductive layer OL2 may be located on the second forming the first electrode series ES1 and the second electrode series ES2 The transparent conductive layer TL2 is above or below. It is worth mentioning that the traditional first connection area is designed to avoid the overlapping of the first opaque conductive layer and the second opaque conductive layer in order to avoid the laser cutting step, so it will avoid the second connection area along the second The direction D2 is arranged such that the width of the opaque region OR located on the first side S1 of the transparent region TR is limited by the size of the first connection region. However, the laser cutting process used to form the first opaque conductive layer OL1 and the second opaque conductive layer OL2 in this embodiment does not damage the insulating layer between the two, so the first connection region CR1 can overlap the second connection Region CR2. Through this overlapping design, the first connection regions CR1 of this embodiment can be arranged along the first direction D1, thereby shortening the distance between the first side S1 of the light-transmitting region TR and the corresponding substrate Sub edge to reduce the location in the light-transmitting region The area of the opaque area OR of the first side S1 of TR.

As shown in the area R2 shown in FIG. 15B, the touch panel TP7 further includes opaque wires OT75, respectively connected to the corresponding first transparent wires TT71 (for example, disposed in the peripheral area RP adjacent to the fourth side S4 of the light-transmitting area TR and from One end of the first transparent wire TT71) extending from one side S1, each opaque wire OT75 The corresponding first transparent wire TT71 has a third connection region CR3, and the third connection region CR3 may also be arranged along the first direction D1. For example, the width of the opaque region OR on the first side S1 of the transparent region TR in the second direction D2 can be reduced to less than 2.5 mm. Similarly, as shown in the region R3 shown in FIG. 15C and the region R4 shown in FIG. 15D, each opaque wire OT71 is disposed in the peripheral region RP adjacent to the third side S3 of the light-transmitting region TR and extends from the second side S2 The first transparent conductive wire TT71 has a fourth connection region CR4, and the fourth connection region CR4 can also be arranged along the first direction D1. Each opaque wire OT72 and the first transparent wire TT71 disposed in the peripheral region RP adjacent to the fourth side S4 of the light-transmitting region TR and extending from the second side S2 have a fifth connection region CR5, and the fifth connection region CR5 also It may be arranged along the first direction D1. Thereby, the area of the non-light-transmitting area OR on the second side S2 of the light-transmitting area TR can be further reduced.

In summary, in the touch panel of the present invention, the transparent conductive wire formed by the transparent conductive material is used to electrically connect each electrode strip group, so that the transparent conductive wire can be disposed in the light-transmitting area. The width can be increased, and the number of opaque wires disposed on the left and right sides of the light-transmitting area can be reduced, thereby reducing the width of the opaque area and reducing the border width of the touch panel. In addition, because the transparent conductive wires made of transparent conductive materials tend to have significantly different equivalent resistances due to different lengths, so that the equivalent resistances of the transparent conductive wires are significantly different, so in the touch panel of the present invention, through The length of the zigzag line of the transparent conductor connecting the electrode strip group closer to the first side and/or the second side of the light-transmitting area is designed to be longer than the distance connecting the first side and/or the second side of the light-transmitting area The length of the zigzag line of the transparent wire of the electrode strip group of the electrode strip group, or the width of the lead portion of the transparent wire connecting the electrode strip group of the electrode strip group farther away from the first side and/or the second side of the light-transmitting area can be compensated for The difference in the equivalent resistance of the lead portion in the transparent wire can thereby equalize the equivalent resistance of each transparent wire and reduce the unevenness of the touch signal caused by the difference in the equivalent resistance of the transparent wire.

The above are only the preferred embodiments of the present invention, and all changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

S1‧‧‧First side

TR‧‧‧Transparent area

Sub‧‧‧Substrate

ELM‧‧‧electrode strip set

ELM1‧‧‧First electrode strip set

ELM2‧‧‧Second electrode strip set

ELM5‧‧‧ fifth electrode strip set

ELM6 ‧‧‧ sixth electrode strip set

D1‧‧‧First direction

D2‧‧‧Second direction

Z‧‧‧ Looking down

RT‧‧‧Touch area

TT1, TT1a, TT1b ‧‧‧ first transparent conductor

PT‧‧‧Part

P1‧‧‧Lead part

P2‧‧‧Resistance adjustment section

P2L‧‧‧Zigzag line

P21‧‧‧The first line segment

P22‧‧‧Second line segment

P23‧‧‧block

RP‧‧‧ surrounding area

GT‧‧‧Ground

Claims (29)

A touch panel has a light-transmitting area and an opaque area, the opaque area includes a pad area located on a first side of the light-transmitting area, and the touch panel includes: a plurality of electrode strips Group, which are respectively disposed in the light-transmitting area along a first direction, wherein the electrode strip groups include a first electrode strip group and a second electrode strip group, and the first electrode strip group is located on the second electrode Between the strip group and the pad area; a plurality of first transparent wires are disposed in the light-transmitting area, each of the first transparent wires includes a resistance adjustment portion and a lead portion, and the resistance adjustment portions are respectively connected to At one end of one of the electrode strip groups, each of the lead portions extends from the corresponding one end of the resistance adjustment portion into the opaque region, and is electrically connected to the first electrode strip group and the second electrode strip The lead portions of the set extend from the first side of the light-transmitting area into the opaque area, and the resistance adjusting portions electrically connected to the first electrode strip set and the second electrode strip set respectively include A zigzag line segment, wherein the length of the zigzag line segment electrically connected to the first electrode strip group is longer than that of the zigzag line segment electrically connected to the second electrode strip group; and a plurality of electrode tandem groups are respectively different from the first One direction and one second direction are disposed in the light-transmitting area, and the electrode string groups and the electrode strip groups are interlaced. The touch panel according to claim 1, wherein the light-transmitting area has a second side relative to the first side, and is connected to the first electrodes of the first electrode strip set and the second electrode strip set The transparent wire extends to the first side, wherein the electrode strip sets further include a third electrode strip set, which is closer to the second side than the first side, and is connected to the first transparent wire of the third electrode strip set Extend to this second side. The touch panel according to claim 2, further comprising at least one opaque wire disposed in the opaque area and connected to the first transparent wire connected to the third electrode strip group, and the first The transparent wire is disposed between the opaque wire and the electrode strip sets. The touch panel according to claim 2, wherein the electrode strip groups further include a fourth electrode strip Group, disposed between the third electrode strip group and the second side, the first transparent wires electrically connected to the third electrode strip group and the fourth electrode strip group respectively include a zigzag line segment, and are electrically connected The length of the zigzag line segment in the fourth electrode strip group is longer than the length of the zigzag line segment electrically connected to the third electrode strip group. The touch panel according to claim 1, wherein the electrode strip groups further include a fifth electrode strip group adjacent to the first electrode strip group, and the electrode strip groups are located in connection with the first electrode strip group Between the first transparent wire and the first transparent wire connected to the fifth electrode strip group. The touch panel according to claim 1, wherein the electrode strip sets further include a sixth electrode strip set, the first electrode strip set and the second electrode strip set are located between the sixth electrode strip set and the pad Between the regions, the first transparent wire electrically connected to the sixth electrode strip group does not have a meander line segment. The touch panel of claim 1, wherein the length of the lead portion electrically connected to the first electrode strip group is shorter than the length of the lead portion electrically connected to the second electrode strip group. The touch panel according to claim 1, wherein the line width of the lead portion connected to the first electrode strip group is smaller than the line width of the lead portion connected to the second electrode strip group. The touch panel according to claim 1, wherein the electrode strip groups and the first transparent wires are formed by a transparent conductive layer. The touch panel according to claim 1, wherein the widths of the resistance adjusting portions in the first direction are the same as each other. The touch panel according to claim 1, wherein each of the electrode strip groups includes two electrode strips separated from each other. The touch panel according to claim 11, wherein each of the electrode strips includes a plurality of shielding portions, and the width of each resistance adjustment portion in the first direction is the same as the width of each shielding portion in the first direction . The touch panel according to claim 1, wherein each of the electrode string groups includes a first electrode A series and a second electrode series, each of the first electrode series includes a plurality of first connection line segments, each of the second electrode series includes a plurality of second connection line segments, one of the resistance adjusting portions overlaps In one of the first connecting line segments and one of the second connecting line segments. The touch panel according to claim 1, further comprising a plurality of second transparent wires, respectively connected to the other end of one of the electrode strip groups. The touch panel of claim 1, wherein the length of the zigzag line segment electrically connected to the first electrode strip group and the length of the zigzag line segment electrically connected to the second electrode strip group depend on including electrical connection to the The difference in equivalent resistance between the first transparent wire of the zigzag line segment of the first electrode strip set and the first transparent wire including the zigzag line segment electrically connected to the second electrode strip set. The touch panel according to claim 1, wherein each of the first transparent wires further includes a lead portion extending into the opaque region along the second direction, and one of the lead portions includes a first portion And a second portion, and the width of the first portion in the first direction is different from the width of the second portion in the first direction. The touch panel according to claim 16, wherein the first transparent wires connected to the two adjacent electrode strip groups are respectively located on two opposite sides of the electrode strip groups. The touch panel according to claim 17, wherein the first part is closer to one of the electrode strip groups electrically connected to the first part and the second part than the second part, and the first part The width is greater than the width of the second part. The touch panel according to claim 16, wherein the first transparent wires connected to the two adjacent electrode strip groups are located on the same side of the electrode strip groups, and the first part is connected to the second part and Electrically connected between one of the electrode strip groups of the first part and the second part, and the first part and the electrode strip groups adjacent to the electrode strip group electrically connected to the first part The distance between the other one is greater than the distance between the second part and the lead portion electrically connected to the other electrode strip group adjacent to the electrode strip group electrically connected to the first part. The touch panel according to claim 1, further comprising a plurality of first opaque wires disposed in the opaque area on the first side of the light-transmitting area, and each of the first opaque wires is connected to a corresponding One end of one of the first transparent wires, wherein each of the first opaque wires and the corresponding first transparent wire has a first connection area, and the first connection areas are arranged along the first direction. The touch panel according to claim 20, further comprising a plurality of second opaque wires disposed in the opaque area on the first side of the transparent area, wherein each of the electrode string groups includes a first An electrode series and a second electrode series, each of the second opaque wires is electrically connected to one of the first electrode series and the second electrode series, each of the second opaque wires and the corresponding The first electrode string or the corresponding second electrode string has a second connection area, and one of the second connection areas overlaps one of the first connection areas. The touch panel according to claim 1, wherein each of the electrode strip groups includes a plurality of electrode portions, each of the electrode portions includes a plurality of strip portions, and each of the electrode tandem groups includes a plurality of electrodes, each of the electrode portions Overlapping with one of the corresponding electrodes, the width of each of the strip portions closest to one of the electrode portions of the first transparent wires is greater than the electrodes not closest to the first transparent wires The width of each strip of one of the sections. The touch panel according to claim 1, wherein all of the first transparent wires extend from one end of each electrode strip group to the first side of the light-transmitting area. A touch panel has a light-transmitting area and an opaque area, the opaque area includes a pad area located on a first side of the light-transmitting area, and the touch panel includes: a plurality of electrode strips Group, which are respectively arranged in the light-transmitting area along a first direction, and the pad area and the electrode strip groups are arranged in a second direction different from the first direction; a plurality of first transparent wires are provided In the light-transmitting area, each of the first transparent wires is respectively connected to one end of one of the electrode strip groups, wherein each of the first transparent wires includes a lead portion, Along the second direction into the opaque region, a portion of the lead portions extend from the first side of the transparent region into the opaque region, one of the lead portions includes a A first part and a second part, and the width of the first part in the first direction is different from the width of the second part in the first direction; and a plurality of electrode tandem groups, respectively, along the second direction It is arranged in the light-transmitting area, and the electrode string groups and the electrode strip groups are interlaced. The touch panel according to claim 24, wherein the first transparent wires respectively connected to the two adjacent electrode strip groups are located on the same side of the electrode strip groups, and the first part is closer to the second part In one of the electrode strip groups electrically connected to the first part and the second part, the width of the first part is smaller than the width of the second part. The touch panel according to claim 24, wherein the first transparent wires respectively connected to the two adjacent electrode strip groups are located on the same side of the electrode strip groups, and the first part is closer to the second part In one of the electrode strip groups electrically connected to the first part and the second part, and the first part and the electrode strip groups adjacent to the electrode strip group electrically connected to the first part The distance between the other one is greater than the distance between the second part and the other one of the electrode strip groups that are not adjacent to the electrode strip group electrically connected to the first part. The touch panel according to claim 24, further comprising a plurality of first opaque wires disposed in the opaque area on the first side of the light-transmitting area, and the first opaque wires are respectively connected to the One end of one of the first transparent wires, wherein each of the first opaque wires and the corresponding first transparent wire has a first connection area, and the first connection areas are arranged along the first direction. The touch panel according to claim 27, further comprising a plurality of second opaque wires disposed in the opaque area on the first side of the transparent area, wherein each of the electrode string groups includes a first An electrode series and a second electrode series, each of the second opaque wires is electrically connected to one of the first electrode series and the second electrode series, each of the second opaque wires and the corresponding First power The electrode string or the corresponding second electrode string has a second connection area, and one of the second connection areas overlaps one of the first connection areas. A touch panel has a light-transmitting area and an opaque area, the opaque area includes a pad area located on a first side of the light-transmitting area, and the touch panel includes: a plurality of electrode strips Group, which are respectively disposed in the light-transmitting area along a first direction, wherein the electrode strip groups include a first electrode strip group and a second electrode strip group, and the first electrode strip group is located on the second electrode Between the strip group and the pad area; a plurality of first transparent wires are provided in the light-transmitting area, and each of the first transparent wires is connected to one end of one of the electrode strip groups; the plurality of first wires An opaque wire is provided in the opaque area on the first side of the light-transmitting area, and each of the first opaque wires is connected to one end of one of the first transparent wires, wherein each of the first opaque wires The conductive wire and the corresponding first transparent conductive wire have a first connection area, and the first connection areas are arranged along the first direction; a plurality of electrode series groups are respectively disposed on the light transmission along a second direction In the region, and the electrode string groups are interleaved with the electrode strip groups; and a plurality of second opaque wires are provided in the opaque region on the first side of the light-transmitting region; wherein each of the electrodes The series group includes a first electrode series and a second electrode series, each of the second opaque wires is electrically connected to one of the first electrode series and the second electrode series, each of the first The two opaque wires and the corresponding first electrode string or the corresponding second electrode string have a second connection area, and one of the second connection areas overlaps one of the first connection areas By.

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