TWI494803B - Touch screen - Google Patents

Description

touch screen

The present invention relates to a touch screen.

The existing touch screen generally includes a plurality of first conductive lines extending in a first direction and a plurality of second conductive lines perpendicularly insulated from the first conductive lines. Generally, the first conductive lines and the second conductive lines are large in number, densely distributed, and small in width, and the touch screen is located on the outermost side of the electronic device, and is easy to adsorb static electricity. When a large amount of static electricity enters the conductive line of the touch screen, it may be The touch screen generates large static interference and damages the conductive lines.

In view of this, it is necessary to provide a touch panel capable of improving electrostatic interference.

A touch screen includes a first conductive line disposed along a first direction, the first conductive line including a plurality of first sensing electrodes arranged in the first direction and connected between adjacent two first sensing electrodes a first connecting bridge, the first connecting bridge including a first tip, the touch screen further comprising an auxiliary discharge structure, the auxiliary discharging structure is insulated from the first conductive line and includes a second tip, the second tip and the first tip Relative settings.

Compared with the prior art, the first connecting bridge of the touch screen of the present invention comprises a first tip, the auxiliary discharging structure comprises a second tip disposed opposite the first tip, and the static electricity entering the first conductive line can pass the first Tip release, the auxiliary discharge junction The second tip of the structure can also discharge static electricity with the first conductive line to improve the electrostatic interference of the touch screen.

10, 20, 30, 40‧‧‧ touch screen

11, 31, 41‧‧‧ first conductive line

12, 32, 42‧‧‧ second conductive line

13, 23, 33‧‧‧ auxiliary discharge structure

X‧‧‧ first direction

Y‧‧‧second direction

110, 310, 410‧‧‧ first sensing electrode

112, 312, 412‧‧‧ first connecting bridge

114‧‧‧First Main Body

116, 316‧‧‧ first tip

120, 320, 420‧‧‧ second sensing electrode

122, 422‧‧‧ second connecting bridge

130‧‧‧Second Main Body

132, 232, 332‧‧‧ second tip

14, 34, 44‧‧‧ base

15, 35, 45‧‧‧ insulation

150, 350‧‧‧ vias

231‧‧‧First straight section

233‧‧‧Second straight section

311‧‧‧First connection

313‧‧‧Second connection

315‧‧‧ Third Connection

317‧‧‧ Main body

324‧‧‧ openings

1 is a schematic plan view showing a first embodiment of a touch panel of the present invention.

Figure 2 is a cross-sectional view of Figure 1 taken along line II-II.

Figure 3 is a cross-sectional view of Figure 1 taken along line III-III.

4 is a schematic plan view showing a second embodiment of the touch screen of the present invention.

FIG. 5 is a schematic plan view showing a third embodiment of the touch screen of the present invention.

Figure 6 is a cross-sectional view taken along line VI-VI of Figure 5.

Figure 7 is a cross-sectional view of Figure 5 taken along line VII-VII.

FIG. 8 is a schematic plan view showing a fourth embodiment of the touch panel of the present invention.

Figure 9 is a cross-sectional view taken along line IX-IX of Figure 8.

Figure 10 is a cross-sectional view taken along line X-X of Figure 8.

Please refer to FIG. 1. FIG. 1 is a schematic plan view showing a first embodiment of a touch screen of the present invention. The touch screen 10 can be a capacitive touch screen including a plurality of first conductive lines 11 extending along the first direction X, a plurality of second conductive lines 12 extending along the second direction Y and insulated from the first conductive lines 11 . And a plurality of auxiliary discharge structures 13. Preferably, the first direction X and the second direction Y are perpendicular to each other.

The first conductive line 11 includes a plurality of first sensing electrodes 110 arranged in the first direction X and a first connecting bridge 112 connecting the adjacent two first sensing electrodes 110. The first connecting bridge 112 includes a first body portion 114 and a first tip end 116. Each of the two ends of the first body portion 114 is connected to the corresponding first sensing electrode 110, and the extending direction of the first body portion 114 may be the first direction X. The first tip 116 is coupled to a central portion of the first body portion 114 for discharging static electricity. In this embodiment, the number of the first tips 116 is two, and the two first tips 116 are respectively connected to two sides of the middle portion of the first body portion 114, and the tips of the two first tips 116 face opposite. The first sensing electrodes 110 are substantially rhombic in the first conductive line 11 except that the two first sensing electrodes 110 at the two ends are triangular.

The second conductive line 12 includes a plurality of second sensing electrodes 120 arranged in the second direction Y and a second connecting bridge 122 connected between the adjacent two second sensing electrodes 120. The second sensing electrode 120 and the first sensing electrode 110 are offset from each other, and the second connecting bridge 122 is insulatively overlapped with the first connecting bridge 112 . In the second conductive line 12, except for the two second sensing electrodes 120 at the two ends being triangular, the other second sensing electrodes 120 are also substantially diamond-shaped.

In the plane, the auxiliary discharge structure 13 overlaps the second conductive line 12. Specifically, the auxiliary discharge structure 13 overlaps the second sensing electrode 120. The auxiliary discharge structure 13 includes a second body portion 130 and a second tip 132 connected to the second body portion 130 and disposed opposite the first tip end 116. The second body portion 130 may extend in the same direction as the first body portion 114, that is, extend along the first direction X. This second tip 132 is also used to discharge static electricity. In the embodiment, the auxiliary discharge structure 13 is also electrically connected to the second conductive line 12 to assist the second conductive line 12 to discharge static electricity. In addition, in the embodiment shown in FIG. 1 , since each first connecting bridge 112 includes two first tips 116 , each first connecting bridge 112 also corresponds to two auxiliary discharging structures 13 , and the two auxiliary discharging electrodes Structures 13 are respectively located on both sides of the first connecting bridge 112 .

Please refer to FIG. 2 and FIG. 3 further. FIG. 2 is a cross-sectional view of FIG. 1 along line II-II, and FIG. 3 is a cross-sectional view of FIG. 1 along line III-III. The touch screen 10 further includes a substrate 14 and an insulating layer 15 for insulating the first conductive line 11 from the second conductive line 12. The first connecting bridge 112 and the auxiliary discharging structure 13 are disposed on the substrate 14. The insulating layer 15 is disposed on the first connecting bridge 112, the auxiliary discharging structure 13 and the substrate 14. The first sensing electrode 110 and the second conductive line 12 are disposed on the insulating layer 15, and the insulating layer 15 is disposed on the insulating layer 15. A plurality of via holes 150 extending through the insulating layer 15 are formed. Both ends of the first body portion 114 of the first connecting bridge 112 are connected to the corresponding first sensing electrodes 110 through the via holes 150. The auxiliary discharging structure 13 is turned on. The hole 150 is connected to the second sensing electrode 120 of the second conductive line 12.

The material of the first connecting bridge 112 and the auxiliary discharging structure 13 may be the same, such as a metal material that is opaque, so that in the process of the touch screen 10, the first connecting bridge 112 and the auxiliary discharging structure 13 may be Formed in the same mask process. The material of the first sensing electrode 110 and the second conductive line 12 may be the same, such as a transparent conductive material, so that in the process of the touch screen 10, the first sensing electrode 110 and the second conductive line 12 may be Formed in the same mask process.

Compared with the prior art, the first connecting bridge 112 of the touch screen 10 of the present invention includes a first tip 116, and the auxiliary discharge structure 13 includes a second tip 132 disposed opposite the first tip 116, entering the first conductive line 11 The static electricity can be released by the first tip 116. The second tip 132 of the auxiliary discharge structure 13 can also discharge static electricity with the first conductive line 11 to improve the electrostatic interference of the touch screen 10. In addition, the auxiliary discharge structure 13 is also electrically connected to the second conductive line 12, and can also assist the second conductive line 12 to discharge static electricity, thereby further improving the static interference phenomenon of the touch screen 10.

Please refer to FIG. 4. FIG. 4 is a schematic plan view showing the second embodiment of the touch screen 20 of the present invention. The main difference between the touch screen 20 of the second embodiment and the touch screen 10 of the first embodiment is that the planar shape of the auxiliary discharge structure 23 is different. Specifically, the auxiliary discharge structure 23 includes a first straight portion 231 and a second straight portion. 233. The first straight strip portion 231 and the second straight strip portion 233 intersect to form a V shape, and the corner of the V shape defines a second tip end 232. The angle between the first straight strip portion 231 and the first direction X is greater than or equal to 30 degrees to less than or equal to 60 degrees, and the angle between the second straight strip portion 233 and the first direction X is greater than Or equal to 30 degrees to less than or equal to 60 degrees. Preferably, the angle between the first straight strip portion 231 and the first direction X is 45 degrees, and the angle between the second straight strip portion 233 and the first direction X is also 45 degrees.

In the second embodiment, the auxiliary discharge structure 23 is V-shaped, and the first straight strip portion 231 and the second straight strip portion 233 both extend obliquely in the first direction X, and the extending direction can be reduced. The visibility of the auxiliary discharge structure 23 is not easily perceived by the human eye, and the observability of the touch screen 20 is improved.

Please refer to FIG. 5. FIG. 5 is a schematic plan view showing a third embodiment of the touch screen 30 of the present invention. The main difference between the touch screen 30 of the third embodiment and the touch screen 10 of the first embodiment is that the structures of the first connection bridges 312 are different, and the shapes of the auxiliary discharge structures 33 are different. Specifically, the two adjacent first sensing electrodes 310 are connected by two opposite first connecting bridges 312. The two first connecting bridges 312 are axially symmetrically disposed along an axis of symmetry parallel to the first direction X. The auxiliary discharge structure 33 is located in a space surrounded by the two first connecting bridges 312.

Each of the first connecting bridges 312 includes a first connecting portion 311, a second connecting portion 313, and a third connecting portion 315. The second connecting portion 313 extends along the first direction X. The first connecting portion 311 is The third connecting portion 315 is connected to the first tip 316. The The first connecting portion 311 and the third connecting portion 315 each include a main body portion 317, and the angle between the first connecting portion 311 and the main connecting portion 317 of the third connecting portion 315 and the first direction X is greater than or equal to 30 degrees. Within a range of less than or equal to 60 degrees, preferably 45 degrees.

Further, the number of auxiliary discharge structures 33 located in the space surrounded by the two first connecting bridges 312 is two, each auxiliary discharge structure 33 extends along the first direction X and each end includes a second tip 332 And the two second tips 332 of each of the auxiliary discharge structures 33 are opposite to the first tips 316 of the first connecting portion 311 and the first tips 316 of the third connecting portion 315, respectively.

In the plane, the second sensing electrode 320 includes an opening 324 , and the second connecting portion 313 is located in the opening 324 of the second sensing electrode 320 and is insulated from the second sensing electrode 320 by a certain interval.

Please refer to FIG. 6 and FIG. 7. FIG. 6 is a cross-sectional view along line VI-VI of FIG. 5, and FIG. 7 is a cross-sectional view along line VII-VII of FIG. The touch screen 30 also includes a substrate 34 and an insulating layer 35 for insulating the first conductive line 31 from the second conductive line 32. The first connecting portion 311, the third connecting portion 315 and the auxiliary discharging structure 33 are both The first sensing portion 310, the second connecting portion 315, the auxiliary discharging structure 33 and the substrate 34 are disposed on the substrate 34. The first sensing electrode 310 and the second connection are disposed on the substrate 34. The portion 313 and the second conductive line 32 are disposed on the insulating layer 35. The insulating layer 35 includes a via hole 350. One end of the first connecting portion 311 and the third connecting portion 315 pass through the via hole 350 and the corresponding first portion. The sensing electrodes 310 are connected, and the other ends of the first connecting portion 311 and the third connecting portion 315 are connected to the second connecting portion 313 through the via holes 350.

The materials of the first connecting portion 311, the third connecting portion 315 and the auxiliary discharging structure 33 are the same, such as a metal material that is opaque, so that the process of the touch screen 30 is performed. The first connecting portion 311, the third connecting portion 315, and the auxiliary discharge structure 33 can be formed in the same mask process. The material of the first sensing electrode 310, the second conductive line 32, and the second connecting portion 313 may be the same, such as a transparent conductive material, so that in the process of the touch screen 30, the first sensing electrode 310, the The second conductive line 32 and the second connecting portion 313 can be formed in the same mask process.

In the third embodiment, the two adjacent first sensing electrodes 310 are connected by two opposite first connecting bridges 312, so that the electrical connection reliability of the two first sensing electrodes 310 can be improved, even if One first connecting bridge 312 is open, and the other first connecting bridge 312 can electrically connect the two first sensing electrodes 310. At the same time, the two first connecting bridges 312 are also more favorable to the first conductive line 31. Electrostatic discharge. Moreover, the first connecting portion 311 and the main body portion 317 of the third connecting portion 315 extend obliquely with respect to the first direction to reduce the visibility of the auxiliary discharge structure 33 and improve the visibility of the touch panel 30.

Referring to FIG. 8 , FIG. 9 and FIG. 10 , FIG. 8 is a schematic plan view of a fourth embodiment of the touch screen 40 of the present invention, FIG. 9 is a cross-sectional view along line IX-IX of FIG. 8 , and FIG. 10 is a cross-sectional view along line XX of FIG. 8 . . The main difference between the touch screen 40 of the fourth embodiment and the touch screen 10 of the first embodiment is that the interlayer structure of the touch screen 40 is different, and the touch screen 40 also includes a substrate 44 and a first conductive line 41 and a second conductive line 42. An insulating layer 45, specifically, a first connecting bridge 412 and an auxiliary discharging structure 43 are disposed on the substrate 44. The first sensing electrode 410 is disposed on the substrate 44 and the first connecting bridge 412 and is first The connecting bridge 412 is directly connected to the second sensing electrode 420. The second sensing electrode 420 is also disposed on the base 44 and is directly connected to the auxiliary discharging structure 43. The insulating layer 45 is disposed on the first connecting bridge 412. The second connecting bridge 422 is disposed on the connecting bridge 412. The insulating layer 45 is connected to the adjacent two second sensing electrodes 420.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or variations according to the spirit of the present invention. All should be covered by the following patent application.

10‧‧‧ touch screen

11‧‧‧First conductive line

12‧‧‧Second conductive line

13‧‧‧Auxiliary discharge structure

X‧‧‧ first direction

Y‧‧‧second direction

110‧‧‧First sensing electrode

112‧‧‧First connecting bridge

114‧‧‧First Main Body

116‧‧‧First tip

120‧‧‧Second sensing electrode

122‧‧‧Second connection bridge

130‧‧‧Second Main Body

132‧‧‧second tip

14‧‧‧Base

150‧‧‧through hole

Claims (20)

A touch screen includes a first conductive line disposed along a first direction, the first conductive line including a plurality of first sensing electrodes arranged in the first direction and connected to two adjacent first sensing electrodes a first connecting bridge, the first connecting bridge includes a first tip, the touch screen further includes an auxiliary discharge structure and a substrate, the first connecting bridge and the auxiliary discharging structure are disposed on the substrate, the auxiliary discharging structure and the The first conductive trace is insulated and includes a second tip that is disposed opposite the first tip. The touch screen of claim 1, wherein the first connecting bridge is the same material as the auxiliary discharging structure. The touch screen of claim 1, wherein the touch screen further comprises a second conductive line extending in a second direction and insulated from the first conductive line, the auxiliary discharge structure electrically connecting the second conductive line. The touch screen of claim 3, wherein the touch screen further comprises an insulating layer for insulating the first conductive line from the second conductive line, the insulating layer is disposed on the first connecting bridge, the auxiliary On the discharge structure and the substrate, the first sensing electrode and the second conductive line are disposed on the insulating layer, the insulating layer includes a via hole, and both ends of the first connecting bridge pass through the via hole and the corresponding first A sensing electrode connection is connected to the second conductive line through the via hole. The touch screen of claim 3, wherein the second conductive line comprises a plurality of second sensing electrodes arranged in the second direction and a second connected between the adjacent two sensing electrodes. Connecting the bridge, the second sensing electrode and the first sensing electrode are offset from each other, and the second connecting bridge is insulated from the first connecting bridge. The touch screen of claim 5, wherein the touch screen further comprises An insulating layer insulated from the second conductive line, the first connecting bridge, the auxiliary discharging structure, the first sensing electrode and the second sensing electrode are disposed on the substrate, and the insulating layer is disposed on the substrate The first connecting bridge is disposed on the insulating layer and connects adjacent two second sensing electrodes. The touch screen of any one of clauses 1 to 6, wherein the first connecting bridge comprises a first body portion and a first tip connected to a middle portion of the first body portion. The touch screen of claim 7, wherein the first connecting bridge comprises two first tips connected to both sides of a central portion of the first body portion, the tips of the two first tips are opposite, each A first connecting bridge corresponds to two auxiliary discharging structures, and the two auxiliary discharging structures are respectively located at two sides of the first connecting bridge. The touch screen of claim 7, wherein the auxiliary discharge structure comprises a second body portion and a second tip connecting the second body portion and corresponding to the first tip, the second body portion and the first The connecting bridges extend in the same direction and both extend in the first direction. The touch screen of claim 7, wherein the auxiliary discharge structure comprises a first straight strip portion and a second straight strip portion, the first straight strip portion intersecting the second straight strip portion to form a V shape, The second tip is defined at the corner of the V. The touch screen of claim 10, wherein an angle between the first straight portion and the first direction is in a range of greater than or equal to 30 degrees to less than or equal to 60 degrees, and the second straight portion The angle with the first direction is in a range from greater than or equal to 30 degrees to less than or equal to 60 degrees. The touch screen of claim 10, wherein an angle between the first straight portion and the first direction is 45 degrees, and an angle between the second straight portion and the first direction is 45 degrees. The touch screen of claim 5, wherein the adjacent two first sensing electrodes are connected by two oppositely disposed first connecting bridges. The touch screen of claim 13, wherein the two first connecting bridges are axially symmetrically disposed along an axis of symmetry parallel to the first direction, and the auxiliary discharge structure is located on the plane. The space enclosed by the two first connecting bridges. The touch screen of claim 14, wherein each of the first connecting bridges includes a first connecting portion, a second connecting portion and a third connecting portion that are sequentially connected, the second connecting portion extending along the first direction The first connecting portion and the inner side of the third connecting portion are connected to the first tip. The touch screen of claim 15, wherein the first connecting portion and the third connecting portion each comprise a main body portion, the first connecting portion and the main portion of the third connecting portion and the first direction The included angle is in the range of greater than or equal to 30 degrees to less than or equal to 60 degrees. The touch screen of claim 15, wherein the number of auxiliary discharge structures located in the space surrounded by the two first connecting bridges is two, and each auxiliary discharge structure extends along the first direction and each end A second tip is included, and the two second tips of each auxiliary discharge structure are respectively opposite to the first tip of the first connecting portion and the first tip of the third connecting portion. The touch screen of claim 17, wherein the second sensing electrode comprises an opening, the second connecting portion is located in the opening of the second sensing electrode and is insulated from the second sensing electrode, the first The two connecting portions are the same as the material of the second sensing electrode. The touch screen of claim 18, wherein the touch screen further comprises an insulating layer for insulating the first conductive line from the second conductive line, the first connecting portion, the third connecting portion and the The auxiliary discharge structure is disposed on the substrate, the insulating layer is disposed on the first connecting portion, the third connecting portion, the auxiliary discharging structure and the substrate, the first sensing electrode, the second connecting portion and the The second conductive line is disposed on the insulating layer, the insulating layer includes a via hole, and the first connecting portion and one end of the third connecting portion are connected to the corresponding first sensing electrode through the via hole, the first connecting portion and The other end of the third connecting portion is connected to the second connecting portion through a through hole. The touch panel of claim 19, wherein the first connecting portion, the third connecting portion, and the auxiliary discharge structure are made of the same material.