TWM539655U - Touch panel with spatial side-running line structure - Google Patents

Description

Touch panel with stereo side running line structure

The present invention relates to a touch panel, and more particularly to a touch panel having a stereo side running line structure.

With the rapid development of mobile devices, the screen of mobile devices has developed into a touch screen for users to click and slide on the touch screen to facilitate the operation of mobile devices, thereby changing the habits of people using mobile devices, current mobile devices. The narrow bezel design will enable the touch screen to produce a large-sized visual effect, and it is also convenient for the user to hold the mobile device.

As shown in FIG. 8 , a touch panel is provided on a substrate 91 with a sensing area 92 and a plurality of leads 93 . The sensing area 92 has a plurality of first axis sensing electrodes 921 and a plurality of second axes. The sensing electrodes 922, the first axis sensing electrodes 921 and the second axis sensing electrodes 922 are insulated from each other, and the first and second axis sensing electrodes 921 and 922 are respectively connected to a soft layer through a lead 93 pad. Circuit board (not shown).

In order to improve the resolution and sensitivity of the touch panel 90, the manufacturer may provide more first and second axis sensing electrodes 921 and 922 in the sensing area 92, and correspondingly provide more on the substrate 91. The lead wire 93 is such that the area of the substrate 91 is occupied by the provision of more leads 93, so that the frame of the touch panel cannot be reduced. If the frame of the touch panel is to be reduced, the frame must be reduced. The width of the leads 93, which in turn causes an increase in the resistance of the leads 93, affects the transmission of the signals, or causes the leads 93 to break. Therefore, there is room for improvement in the prior art.

In view of the above problems in the prior art, the present invention provides a touch panel having a three-dimensional side running line structure, which is configured to reduce the area of the side running line by arranging the side running lines on the upper and lower surfaces of a substrate. In order to achieve the purpose of improving space utilization.

The touch panel for the above-mentioned purpose is a touch panel having a three-dimensional side running line structure, comprising: a substrate having an upper surface and a lower surface, wherein the upper surface of the substrate is provided with a sensing area and a walking a plurality of sensing electrodes are formed in the sensing area; a plurality of first side running lines respectively include a first segment and a second segment, wherein the first segment of the first side running line is disposed in the a wiring area connected to the corresponding sensing electrode, the second section is disposed on the lower surface of the substrate, and respectively corresponding to a first segment; the plurality of conductive portions are disposed on the upper surface and the lower surface of the substrate The upper ends of the conductive portions are respectively connected to the corresponding first segment portions, and the lower ends of the conductive portions are respectively connected to the corresponding second segment portions; the plurality of second side running lines are disposed in the routing region, and Connected to the corresponding sensing electrodes, the second side running lines are staggered with the first side running lines; a flexible circuit board for running with the first side running lines and the second side running lines Electrical connection.

According to the above configuration, the first segment and the second segment of the first side running line are disposed on the upper and lower surfaces of the substrate, and the first segment is electrically connected through the conductive portions. The second side portion has the first side running line in a three-dimensional wiring structure, and the second side running lines are interlaced and spaced apart from the first side running lines to reduce the first and the first The running area of the two side running lines and the narrowing of the border of the touch panel, thereby achieving the purpose of improving space utilization.

In addition, since the second sections of the first side running lines are disposed on the lower surface of the substrate, the first side running lines and the second side running lines do not need to be reduced in line width, and There will be problems with rising impedance, and there will be no problem of disconnection to improve the effect of signal transmission and process yield.

For a first preferred embodiment of the touch panel having a three-dimensional side running line structure, please refer to FIG. 1 and FIG. 2, which includes a substrate 10 and a flexible circuit board 20; in this embodiment, the substrate 10 It is a transparent substrate.

The substrate 10 has an upper surface, a lower surface, and a first side 101 and a second side 102 parallel to each other. The upper surface of the substrate 10 forms a sensing area 11 on the upper surface of the substrate 10 and adjacent to the first A second routing portion 12 is formed at the second side 101 and 102. The sensing region 11 is formed with a plurality of first axis sensing electrodes 111 and a plurality of second axis sensing electrodes 112. The first and second axis sensing electrodes 111 are formed. The 112 series are arranged at intervals and are electrically insulated.

The first side running line 13 , the plurality of first conductive parts 14 and the plurality of second side running lines 15 are respectively disposed on the one of the first side edges 101 , and the first side running lines 13 respectively include a first a first portion 131 is disposed on the upper surface of the substrate 10, and the second portion 132 is disposed on the lower surface of the substrate 10, and the first portion 131 is respectively connected to the corresponding first axis sensing electrode 111, and a first conductive portion 14 corresponding to the first side running line 13 is disposed between the upper surface and the lower surface of the substrate 10, wherein the first conductive portion 14 is The first end portion 131 is connected to the first end portion 131, and the lower end portion of the first conductive portion 14 is connected to the second segment portion 132, so that the first segment portion 131 and the second segment portion 132 of the first side running line 13 are connected and connected. The second sections 132 of the first side running lines 13 are respectively connected to the flexible circuit board 20.

As shown in FIG. 1 and FIG. 3 , in the embodiment, the first conductive portion 14 is formed with a conductive hole formed between the upper surface and the lower surface of the substrate 10 , and is filled with conductive in the conductive hole. A conductive material is functionally formed to form the first conductive portion 14, and the conductive material may be a silver paste.

Referring to FIG. 1 and FIG. 4, the second side running lines 15 respectively include a first segment portion 151 and a second segment portion 152, and the first segment portions 151 of the second side running lines 15 respectively correspond to The first axis sensing electrodes 111 are connected, and the second segment 152 of the second side running wires 15 is connected to the flexible circuit board 20.

The first segment portion 151 of the second side running line 15 and the first segment portion 131 of the first side running line 13 are staggered. Therefore, one of the first axis sensing electrodes 111 arranged in a row is correspondingly connected. The first side portion 131 of the first side running line 13 and the other first axis sensing electrode 111 are connected to a first segment portion 151 of the corresponding second side running line 15.

The second section 152 of the second side running line 15 and the second section 132 of the first side running line 13 are parallel to the upper and lower surfaces of the substrate 10, so that the first side runs The line 13 and the second side running lines 15 are arranged neatly to reduce the running area of the line area 12.

Referring to FIG. 1 and FIG. 2, a plurality of third side running lines 16 are disposed on the wiring area 12 of the second side 102, so that the second axis sensing electrodes 112 respectively pass through a third side running line 16. Connected to the flexible circuit board 20.

In this embodiment, a plurality of first connection terminals 103 are disposed on the upper surface and the lower surface of the substrate 10 and adjacent to the third side running lines 16, and the first connection terminals 103 are used to connect the first terminals. The side running line 13, the second side running line 15 and the third side running line 16.

As shown in FIG. 1 and FIG. 3 , the flexible circuit board 20 is provided with a touch sensing integrated circuit 21 , and the flexible circuit board 20 is disposed on the substrate 10 and adjacent to a third side running line 16 . And connecting the first connection terminals 103 on the upper surface and the lower surface of the substrate 10 through the two conductive adhesives 22, and electrically connecting the first and second axis sensing electrodes 111 and 112 to the touch sensing product of the flexible circuit board 20. The body circuit 21; in this embodiment, the conductive paste 22 is an anisotropic conductive paste.

The first segment 131 and the second segment 132 of the first side running line 13 are divided into three-dimensional wiring structures on the upper and lower surfaces of the substrate 10 to reduce the running area of the routing area 12, The first side running line 13 and the second side running line 15 are arranged without reducing the line width, thereby effectively improving the problem of increased running line impedance, thereby improving signal transmission, process yield and space utilization. The purpose of the rate.

Referring to FIGS. 5 and 6, a second preferred embodiment of the present invention is substantially the same as the first preferred embodiment, but the second preferred embodiment is another substrate 10 The wiring area 12 of the one side 101 is further provided with a plurality of fourth side running lines 17 having the same structure as the first side running line 13 of the first preferred embodiment, and the first conductive portion of the first preferred embodiment. 14 a plurality of second conductive portions 18 of the same structure, and a plurality of fifth side running lines 19 of the same structure as the second side running line 15 of the first preferred embodiment, the fourth and fifth side running lines 17, 19 They are respectively connected to the corresponding first axis sensing electrodes 111.

The fourth side running lines 17 respectively include a first segment portion 171 and a second segment portion 172. The second segment portion 172 of the fourth side running line 17 is disposed on the lower surface of the substrate 10 and on the substrate. A second conductive portion 18 corresponding to the fourth side running line 17 is disposed between the upper and lower surfaces of the 10, and the upper end and the lower end of the second conductive portion 18 are respectively connected to the first portion 171 of the fourth side running line 17. And the second section 172 is configured to connect the first and second sections 171 and 172 that open the fourth side running line 17, and the first section 171 of the fourth side running line 17 and the corresponding first axis respectively The sensing electrodes 111 are connected, and the second segment 172 of the fourth side running wires 17 is connected to the flexible circuit board 20.

In this embodiment, the second conductive portion 18 is formed with a conductive hole formed between the upper surface and the lower surface of the substrate 10, and is filled with a conductive material having a conductive function in the conductive hole to form the above The second conductive portion 18, the conductive material may be a silver paste.

The fifth side running lines 19 respectively include a first segment portion 191 and a second segment portion 192. The first segment portions 191 of the fifth side running wires 19 are respectively connected to the corresponding first axis sensing electrodes 111. The second section 192 of the fifth side running line 19 is respectively connected to the flexible circuit board 20, the first section 191 of the fifth side running line 19 and the first section of the fourth side running line 17. The second portion 192 of the fifth side running line 19 and the second length portion 172 of the fourth side running line 17 are on the upper and lower surfaces of the substrate 10 in a staggered arrangement on the upper surface of the substrate 10 . The parallel corresponding arrangement causes the fourth and fifth side running lines 17, 19 to be neatly arranged, and effectively reduces the running line area.

A plurality of second connection terminals 104 connected to the fourth and fifth side running lines 17 and 19 are respectively disposed at a position of the upper surface and the lower surface of the substrate 10 adjacent to the third side running lines 16 and Referring to FIG. 7 , the flexible circuit board 20 passes through the conductive adhesives 22 to connect the second connection terminals 104 on the upper surface and the lower surface of the substrate 10 respectively, so that the first axis sensing electrodes 111 pass through the first 4. The fifth side running lines 17, 19 are electrically connected to the touch sensing integrated circuit 21 of the flexible circuit board 20.

The fourth side running line 17 and the fifth side running line 19 are disposed on the wiring area 12 of the substrate 10 to improve the signal transmission efficiency of the first axis sensing electrodes 111.

10,91‧‧‧substrate
101‧‧‧ first side
102‧‧‧Second side
103‧‧‧First connection terminal
104‧‧‧Second connection terminal
11,92‧‧‧ Sensing area
111,921‧‧‧First axis induction electrode
112,922‧‧‧Second axis induction electrode
12‧‧‧Drop area
13‧‧‧First side running line
131, 151, 171, 191‧ ‧ the first paragraph
132,152,172,192‧‧‧second section
14‧‧‧First Conductive Department
15‧‧‧Second side running line
16‧‧‧ third side running line
17‧‧‧ fourth side running line
18‧‧‧Second Conductive Department
19‧‧‧ fifth side running line
20‧‧‧Soft circuit board
21‧‧‧Touch-sensitive integrated circuit
22‧‧‧Conductive adhesive
93‧‧‧Lead

1 is a top view of a touch panel of the first preferred embodiment of the present invention. 2 is a rear view of the touch panel of the first preferred embodiment of the present invention. Figure 3 is a cross-sectional view taken along line A-A of Figure 1 of the first preferred embodiment of the present invention. 4 is a partial enlarged view of a touch panel of the first preferred embodiment of the present invention. FIG. 5 is a top view of the touch panel of the second preferred embodiment of the present invention. 6 is a rear view of the touch panel of the second preferred embodiment of the present invention. Figure 7 is a cross-sectional view taken along line B-B of Figure 5 of the second preferred embodiment of the present invention. FIG. 8 is a schematic diagram of a conventional touch panel.

10‧‧‧Substrate

101‧‧‧ first side

102‧‧‧Second side

103‧‧‧First connection terminal

11‧‧‧ Sensing area

111‧‧‧First axis sensing electrode

112‧‧‧Second axis induction electrode

12‧‧‧Drop area

13‧‧‧First side running line

131,151‧‧‧The first paragraph

132,152‧‧‧The second paragraph

14‧‧‧First Conductive Department

15‧‧‧Second side running line

16‧‧‧ third side running line

20‧‧‧Soft circuit board

21‧‧‧Touch-sensitive integrated circuit

22‧‧‧Conductive adhesive

Claims (10)

A touch panel having a three-dimensional side running line structure includes: a substrate having an upper surface and a lower surface, wherein the upper surface of the substrate is provided with a sensing area and a routing area, and the sensing area is formed with a plurality of sensing electrodes a first side running line, which includes a first section and a second section, wherein the first section of the first side running line is disposed in the routing area and connected to the corresponding sensing electrode. The second segment is disposed on the lower surface of the substrate and respectively corresponding to a first segment; the plurality of first conductive portions are disposed between the upper surface and the lower surface of the substrate, and the upper ends of the first conductive portions Connected to the corresponding first segment, the lower ends of the first conductive portions are respectively connected to the corresponding second segments; the plurality of second side running lines are disposed in the routing region and connected to the corresponding sensing electrodes The second side running line is staggered with the first side running lines; a flexible circuit board is electrically connected to the first side running lines and the second side running lines. The touch panel of claim 1 , wherein the sensing electrode comprises a plurality of first axis sensing electrodes and a plurality of second axis sensing electrodes, the first axis sensing electrodes and the second axis The sensing electrode is electrically insulated, and the first side running line and the second side running line are respectively connected to the corresponding first axis sensing electrodes; the line area is provided with a plurality of third side running lines, and the second line The shaft sensing electrode is connected to the flexible circuit board through a corresponding third side running line. The touch panel of claim 2, wherein the first conductive portion is formed with a via hole formed between the upper surface and the lower surface of the substrate, and is filled in the via hole. a conductive material to respectively connect the first segment and the second segment of the first side running line. The touch panel having the stereo side running line structure according to claim 3, wherein the second side running lines respectively include a first segment and a second segment, and the second side runs first The segment is staggered with the first segment of the first side running line, and the second segment of the second side running line is arranged in parallel with the second segment of the first side running line. The touch panel of claim 4, wherein the upper surface and the lower surface of the substrate are provided with a plurality of first connection terminals to respectively run with the first side and the second The side running line and the third side running line are connected; the flexible circuit board is provided with a touch sensing integrated circuit, and the flexible circuit board passes through the second conductive adhesive and the first connecting terminal of the upper surface and the lower surface of the substrate respectively The first axis sensing electrodes and the second axis sensing electrodes are connected to the touch sensing integrated circuit of the flexible circuit board. The touch panel having the stereo side running line structure according to claim 5, wherein the routing area is provided with a plurality of fourth side running lines corresponding to the first side running lines, and respectively corresponding to the first The shaft sensing electrodes are connected to the flexible circuit board, and the fourth side running lines respectively include a first segment and a second segment, and the second segment of the fourth side running line is disposed on the substrate a lower surface; a plurality of second conductive portions are disposed between the upper surface and the lower surface of the substrate, and the upper ends of the second conductive portions are respectively connected to the first segment of the corresponding fourth side running line, and the second conductive portions The lower end is respectively connected to the second section of the corresponding fourth side running line. The touch panel having the stereo side running line structure according to claim 6, wherein the routing area is provided with a plurality of fifth side running lines corresponding to the second side running lines, and the fourth side The running lines are staggered, and the fifth side running lines are respectively connected to the corresponding first axis sensing electrodes and to the flexible circuit board. The touch panel having the stereo side running line structure according to claim 7, wherein the fifth side running lines respectively include a first segment and a second segment, and the fifth side runs first. The segment portion is staggered with the first segment of the fourth side running line, and the second segment of the fifth side running line is arranged in parallel with the second segment of the fourth side running line. The touch panel of claim 8, wherein the upper surface and the lower surface of the substrate are respectively provided with a plurality of second connection terminals to respectively run with the fourth side, the first a five-side running line connection; the flexible circuit board is respectively connected to the second connecting terminals of the upper surface and the lower surface of the substrate through the conductive adhesive, and the touch sensing integrated circuit is connected to the second connection via the conductive adhesive Terminal connection. The touch panel of claim 9, wherein the second conductive portion is formed with a via hole formed between the upper surface and the lower surface of the substrate, and is filled in the via hole. a conductive material for connecting the first segment and the second segment of the fourth side running line, respectively.