CN107831940B - Touch device with electrostatic protection capability - Google Patents
Touch device with electrostatic protection capability Download PDFInfo
- Publication number
- CN107831940B CN107831940B CN201711136752.0A CN201711136752A CN107831940B CN 107831940 B CN107831940 B CN 107831940B CN 201711136752 A CN201711136752 A CN 201711136752A CN 107831940 B CN107831940 B CN 107831940B
- Authority
- CN
- China
- Prior art keywords
- signal lines
- lines
- touch
- ground
- touch device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Elimination Of Static Electricity (AREA)
- Semiconductor Integrated Circuits (AREA)
- Position Input By Displaying (AREA)
Abstract
The touch device with electrostatic protection capability includes a touch panel, a driving circuit, a plurality of driving signal lines and a plurality of ground lines. The touch panel comprises a plurality of touch units which are arranged in an array shape of a plurality of rows and a plurality of columns. The plurality of signal lines are coupled to the driving circuit and are respectively coupled to each touch unit in a corresponding row in the touch panel, wherein the driving circuit is used for sequentially driving the plurality of touch units through the plurality of signal lines. Each ground line of the plurality of ground lines is adjacent to two corresponding signal lines of the plurality of signal lines. The touch device can reduce the probability of electrostatic discharge phenomenon occurring in the driving signal line to less than ten percent. In addition, when the driving signal line is bent, the grounding line can also be bent along with the driving signal line, so that the touch device can keep good electrostatic protection capability under the condition of narrow frame design.
Description
Technical Field
The present disclosure relates to a touch device, and more particularly, to a touch device with electrostatic discharge protection capability.
Background
In recent years, narrow bezel designs have been favored to improve the handling and aesthetic appeal of touch devices. And the signal lines around the touch device are folded back to one side of the touch device, which is a design mode capable of effectively reducing the thickness of the frame. However, the conventional electrostatic discharge protection circuit (esd protection circuit) includes a transistor and a capacitor, so that the conventional esd protection circuit is not flexible and cannot be bent.
Disclosure of Invention
Therefore, there is a need in the art to provide a touch device with electrostatic protection capability suitable for narrow frame design.
One embodiment of the present disclosure relates to a touch device with electrostatic discharge protection capability. The touch device comprises a touch panel, a driving circuit, a plurality of signal wires and a plurality of grounding wires. The touch panel comprises a plurality of touch units which are arranged in an array shape of a plurality of rows and a plurality of columns. The plurality of signal lines are coupled to the driving circuit and are respectively coupled to each touch unit in a corresponding row in the touch panel, wherein the driving circuit is used for sequentially driving the plurality of touch units through the plurality of signal lines. Each ground line of the plurality of ground lines is adjacent to two corresponding signal lines of the plurality of signal lines.
In some embodiments, each of the plurality of signal lines is adjacent to two corresponding ground lines of the plurality of ground lines.
In some embodiments, a conductor width of each of the plurality of ground lines is at least ninety percent of a separation distance between the two corresponding signal lines.
In some embodiments, a width of a conductive line of each of the plurality of ground lines is greater than a width of a conductive line of each of the plurality of signal lines.
In some embodiments, a maximum wire width of each of the plurality of ground wires is at least 3.6 mm.
In some embodiments, a length of a conductive line of each of the plurality of ground lines is approximately equal to a length of a conductive line of one of the two corresponding signal lines.
In some embodiments, the display device further comprises a plurality of insulating layers, each covering a corresponding signal line of the plurality of signal lines.
In some embodiments, the circuit further includes a plurality of conductive connection layers, each for coupling two ground lines separated from each other by only one signal line, and each being staggered with a corresponding insulation layer.
In some embodiments, a plurality of protrusions are disposed on each of the plurality of signal lines.
In some embodiments, the distance from the tip of each protrusion to the ground line closest to the protrusion is between 10 μm and 50 μm.
One advantage of the above embodiments is that the touch device can reduce the probability of the electrostatic discharge phenomenon occurring in the driving signal line to less than ten percent.
Another advantage of the foregoing embodiments is that when the driving signal line is bent, the ground line is also bent, so that the touch device can maintain a good electrostatic protection capability under a narrow frame design.
Drawings
In order to make the aforementioned and other objects, features, advantages and embodiments of the disclosure more comprehensible, the following description is given:
fig. 1 is a simplified functional block diagram of a touch device with electrostatic protection capability according to an embodiment of the disclosure.
Fig. 2 is a partially enlarged functional block diagram of a first direction signal line and a ground line of the touch device of fig. 1.
Fig. 3 is a partially enlarged functional block diagram of a first direction signal line and a ground line of a touch device according to another embodiment of the disclosure.
Fig. 4 is a partially enlarged functional block diagram of a first direction signal line and a ground line of a touch device according to still another embodiment of the disclosure.
FIG. 5 is a simplified functional block diagram of a touch device with electrostatic protection capability according to another embodiment of the disclosure.
Reference numerals:
100. 300, 400, 500: touch control device
110: touch panel
120: first direction drive circuit
130. 530: first direction signal line
140: second direction drive circuit
150. 550: second direction signal line
160. 560: grounding wire
170: first direction touch control unit
180: second direction touch control unit
310: insulating layer
320: conductive connection layer
410: protrusion part
Detailed Description
The embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, like reference numerals designate identical or similar components or process flows.
Fig. 1 is a simplified functional block diagram of a touch device 100 with electrostatic protection capability according to an embodiment of the disclosure. As shown in fig. 1, the touch device 100 includes a touch panel 110, a first direction driving circuit 120, a plurality of first direction signal lines 130, a second direction driving circuit 140, a plurality of second direction signal lines 150, and a plurality of ground lines 160 (shown by dashed lines). The touch panel 110 includes a plurality of first direction touch units 170 and a plurality of second direction touch units 180, and the first direction touch units 170 and the second direction touch units 180 are arranged in an array shape of a plurality of rows and a plurality of columns. The first direction signal lines 130 are respectively coupled to all the first direction touch units 170 in a corresponding row, and the first direction driving circuit 120 sequentially drives (or reads) the first direction touch units 170 in the touch panel 110 through the first direction signal lines 130. The second direction signal lines 150 are respectively coupled to all the second direction touch units 170 in a corresponding row, and the second direction driving circuit 140 sequentially drives (or reads) the second direction touch units 180 in the touch panel 110 through the second direction signal lines 150. Each grounding line 160 is used for transferring the electrostatic charges accumulated in the touch device 100 to a corresponding grounding point, so as to prevent the touch device 100 from being damaged by unexpected electrostatic discharge.
Fig. 2 is a partially enlarged functional block diagram of the first direction signal line 130 and the ground line 160 of the touch device 100 of fig. 1. As shown in fig. 2, the plurality of ground lines 160 and the plurality of first direction signal lines 130 are arranged at intervals to prevent accumulated static charges from penetrating through the first direction signal lines 130 to break down internal components of the touch device 100, that is, each first direction signal line 130 is adjacent to two corresponding ground lines 160, and each ground line 160 is also adjacent to two corresponding first direction signal lines 130. The first-direction signal lines 130 have a relatively thin line width, and any two nearest first-direction signal lines 130 have a relatively wide spacing distance therebetween. Therefore, the wire width of the ground wire 160 may be greater than the wire width of the first-direction signal wire 130.
In the present embodiment, the width of the grounding line 160 disposed between the first direction signal lines 130 is at least ninety percent of the distance between two adjacent first direction signal lines 130 of the grounding line 160. The length of each ground line 160 is similar to the length of one of the two first-direction signal lines 130 adjacent to the ground line 160. That is, each of the ground lines 160 extends from the vicinity of the connection between the first direction signal line 130 and the touch panel 110 to the vicinity of the connection between the first direction signal line 130 and the first direction driving circuit 120, so as to provide complete electrostatic protection for the area through which the first direction signal line 130 passes. Therefore, if an electrostatic discharge (ESD) occurs in the area where the first direction signal lines 130 and the ground lines 160 are located, more than ninety percent of the ESD may occur on the ground lines 160.
In practice, in some embodiments, the first-direction signal line 130 has a wire width of 0.1mm, and the maximum distance between two first-direction signal lines 130 adjacent to any one of the ground lines 160 is 4 mm. Therefore, the maximum wire width of the ground wire 160 may be set to at least 3.6mm (e.g., 3.8 mm).
In other embodiments, the ground lines 160 of the touch device 100 may be spaced apart from the second direction signal lines 150, that is, each second direction signal line 150 is adjacent to two corresponding ground lines 160. The width of the ground line 160 disposed between the second direction signal lines 150 is at least ninety percent of the distance between two adjacent second direction signal lines 150 of the ground line 160.
Fig. 3 is a partially enlarged functional block diagram of the first direction signal line 130 and the ground line 160 of the touch device 300 according to another embodiment of the disclosure. Many functional blocks of the touch device 300 operate in a similar manner and have advantages as those of the touch device 100, except that the touch device 300 further includes a plurality of insulating layers 310 and a plurality of conductive connecting layers 320.
As shown in fig. 3, the plurality of ground lines 160 and the plurality of first direction signal lines 130 of the touch device 300 are arranged at intervals, that is, a ground line 160 is disposed between every two adjacent first direction signal lines 130, and the plurality of insulating layers 310 are used for covering the exposed portions of the first direction signal lines 130. Specifically, the insulating layers 310 each cover a corresponding first-direction signal line 130 and partially cover two ground lines 160 adjacent to the corresponding first-direction signal line 130. As such, compared to the touch device 100, the touch device 300 can further prevent the electrostatic discharge phenomenon from occurring on the first direction signal line 130 through the insulating layer 310.
In some embodiments, the grounding lines 160 of the touch device 300 may also be arranged at intervals with the second direction signal lines 150, that is, each second direction signal line 150 is adjacent to two corresponding grounding lines 160. Each of the plurality of second direction signal lines 150 is covered by a corresponding insulating layer 310.
The conductive connection layers 320 are used to couple two ground lines 160, which are spaced apart from each other by only one first-direction signal line 130 or one second-direction signal line 150, to each other, and each conductive connection layer 320 partially covers a corresponding insulation layer 210. That is, each conductive connection layer 320 is staggered with a corresponding insulation layer 210, and is also staggered with a corresponding first-direction signal line 130 or second-direction signal line 150. In this way, each of the ground lines 160 is coupled in series by the conductive connection layer 320. Therefore, compared to the touch device 100, the touch device 300 can reduce the number of grounding points, and further reduce the difficulty of the trace design of the touch device 300.
Fig. 4 is a partially enlarged functional block diagram of the first direction signal line 130 and the ground line 160 of the touch device 400 according to still another embodiment of the disclosure. The operation and advantages of many functional blocks of the touch device 400 are similar to those of the touch device 100, except that a plurality of protrusions 410 are disposed on the plurality of first direction signal lines 130 of the touch device 400. As shown in fig. 5, the plurality of ground lines 160 and the plurality of first direction signal lines 130 of the touch device 400 are arranged at intervals, that is, a ground line 160 is disposed between every two adjacent first direction signal lines 130. The tip of each protrusion 410 faces the ground line 160 closest to the protrusion 410, so that static charges accumulated on the first-direction signal line 130 corresponding to the protrusion 410 are easily discharged to the adjacent ground line 160.
In some embodiments, the grounding lines 160 of the touch device 400 may also be arranged at intervals with the second direction signal lines 150, that is, each second direction signal line 150 is adjacent to two corresponding grounding lines 160. The plurality of second direction signal lines 150 of the touch device 400 are also provided with a plurality of protrusions 410, respectively.
In practice, the distance from the tip of the protrusion 410 to the ground line 130 closest to the protrusion 410 may be set to be between 10 μm and 50 μm. In addition, the protrusions 410 may be arranged symmetrically or alternatively, and the number of the protrusions 410 may be adjusted according to actual requirements.
Fig. 5 is a simplified functional block diagram of a touch device 500 with electrostatic protection capability according to another embodiment of the disclosure. As shown in fig. 5, the touch device 500 includes a touch panel 110, a first direction driving circuit 120, a plurality of first direction signal lines 530, a second direction driving circuit 140, a plurality of second direction signal lines 550, and a plurality of ground lines 560. The operation and advantages of many functional blocks in the touch device 500 are similar to those of the touch device 100, and are not repeated herein, except that at least two first direction signal lines 530 or at least two second direction signal lines 550 are disposed between the two ground lines 560.
The width of each ground line 560 disposed between the first-direction signal lines 530 is at least ninety percent of the distance separating two first-direction signal lines 530 adjacent to the ground line 560. The width of each ground line 560 disposed between the second direction signal lines 550 is at least ninety percent of the distance separating two second direction signal lines 550 adjacent to the ground line 560.
In some embodiments, the first-direction signal line 530 or the second-direction signal line 550 between two adjacent ground lines 560 may be covered by a corresponding insulating layer (not shown) to further prevent the electrostatic discharge phenomenon from occurring on the first-direction signal line 130.
In other embodiments, two ground lines 560 spaced apart from each other by only one first-direction signal line 530 or one second-direction signal line 550 may be coupled to each other through a conductive connection layer (not shown). In this way, all the grounding lines 560 can be coupled together in series through the conductive connection layer, thereby reducing the number of grounding points.
In practice, the first direction signal lines 130 and 530, the second direction signal lines 150 and 550, and the ground lines 160 and 560 may be bent to one side of the touch panel 110 to save the space required by the whole circuit.
For example, in some embodiments, the first and second directional signal lines and the ground line are disposed on a Flexible Printed Circuit (FPC), so that the first and second directional signal lines and the ground line are overlapped on the touch panel by bending the first and second directional signal lines and the ground line to one side of the touch panel, thereby saving the whole circuit area of the touch device and achieving a narrow frame design. Moreover, under the condition that the first direction signal wire, the second direction signal wire and the grounding wire are bent, the relative position between the first direction signal wire and the grounding wire is not changed, and the relative position between the second direction signal wire and the grounding wire is not changed, so that the touch device still has good electrostatic protection capability.
In summary, the touch devices 100, 300, 400, and 500 can reduce the probability of the electrostatic discharge phenomenon occurring on the first direction signal lines 130 and 530 and/or the second direction signal lines 150 and 550 to less than ten percent by disposing the large- area ground lines 160 and 560 between the first direction signal lines 130 and 530 and/or the second direction signal lines 150 and 550.
In addition, when the first direction signal lines 130 and 530 and the second direction signal lines 150 and 550 in the touch devices 100, 300, 400, and 500 are bent in order to implement a narrow bezel design, the ground lines 160 and 560 may also be bent. Therefore, the touch devices 100, 300, 400, and 500 can maintain good electrostatic protection capability under the narrow bezel design.
Certain terms are used throughout the description and claims to refer to particular components. However, it will be understood by those skilled in the art that the same elements may be referred to by different names. The specification and claims do not intend to distinguish between components that differ in name but not function. In the description and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. Also, the term "coupled" as used herein includes any direct or indirect connection. Therefore, if the first element is coupled to the second element, it means that the first element can be directly connected to the second element through electrical connection or signal connection such as wireless transmission, optical transmission, etc., or indirectly connected to the second element through other elements or connection means.
As used herein, the description of "and/or" includes any combination of one or more of the items listed. In addition, any reference to singular is intended to include the plural unless the specification specifically states otherwise.
It should be understood, however, that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
Claims (6)
1. A touch device with electrostatic protection capability, comprising:
the touch panel comprises a plurality of touch units which are arranged in an array shape of a plurality of rows and a plurality of columns;
a driving circuit;
a plurality of signal lines coupled to the driving circuit and each coupled to each touch unit in a corresponding row of the touch panel, wherein the driving circuit is configured to sequentially drive the plurality of touch units through the plurality of signal lines;
a plurality of ground lines each adjacent to two corresponding signal lines of the plurality of signal lines;
a plurality of insulating layers each covering a corresponding one of the plurality of signal lines;
a plurality of conductive connection layers each for coupling two ground lines spaced apart from each other by only one signal line to each other, and each being staggered with a corresponding insulating layer;
wherein a conductor width of each of the plurality of ground lines is at least ninety percent of a spacing distance between the two corresponding signal lines;
wherein, a wire length of each of the plurality of grounding wires is approximate to a wire length of one of the two corresponding signal wires.
2. The touch device of claim 1, wherein each of the plurality of signal lines is adjacent to two corresponding ground lines of the plurality of ground lines.
3. The touch device of claim 1, wherein a width of a conductive line of each of the plurality of ground lines is greater than a width of a conductive line of each of the plurality of signal lines.
4. The touch device of claim 1, wherein a maximum wire width of each of the plurality of ground lines is at least 3.6 mm.
5. The touch device of claim 1, wherein the signal lines are each provided with a plurality of protrusions.
6. The touch device of claim 5, wherein the distance from the tip of each protrusion to the ground line closest to the protrusion is between 10 μm and 50 μm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136752.0A CN107831940B (en) | 2017-11-16 | 2017-11-16 | Touch device with electrostatic protection capability |
| TW106141215A TWI632499B (en) | 2017-11-16 | 2017-11-27 | Touch device having esd protection capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136752.0A CN107831940B (en) | 2017-11-16 | 2017-11-16 | Touch device with electrostatic protection capability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107831940A CN107831940A (en) | 2018-03-23 |
| CN107831940B true CN107831940B (en) | 2020-10-23 |
Family
ID=61651913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711136752.0A Active CN107831940B (en) | 2017-11-16 | 2017-11-16 | Touch device with electrostatic protection capability |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107831940B (en) |
| TW (1) | TWI632499B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108874236B (en) * | 2018-08-29 | 2020-11-24 | 武汉华星光电技术有限公司 | Touch panel and display touch device |
| CN109951951B (en) * | 2019-04-29 | 2020-06-16 | 深圳市华星光电技术有限公司 | Printed circuit board and display device |
| CN110389686B (en) * | 2019-07-25 | 2023-09-08 | 京东方科技集团股份有限公司 | Touch device, display device and preparation method of touch device |
| CN114828606B (en) * | 2022-03-28 | 2023-05-23 | 电子科技大学 | Electrostatic protection assembly and touch electronic product |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197813A (en) * | 2012-01-05 | 2013-07-10 | 宏达国际电子股份有限公司 | Touch panel |
| CN203376735U (en) * | 2013-08-08 | 2014-01-01 | 敦泰科技有限公司 | Capacitive touch screen |
| TW201619776A (en) * | 2014-11-21 | 2016-06-01 | Interface Optoelectronics Shenzhen Co Ltd | Touch control device capable of reinforcing static protection effect |
| CN105988608A (en) * | 2014-11-20 | 2016-10-05 | 宸鸿科技(厦门)有限公司 | Electrostatic protection touch control panel |
| CN205827353U (en) * | 2016-06-08 | 2016-12-21 | 深圳市品触光电科技有限公司 | A kind of touch screen circuit |
| CN106325585A (en) * | 2015-07-10 | 2017-01-11 | 南京瀚宇彩欣科技有限责任公司 | ESD protection touch control structure |
-
2017
- 2017-11-16 CN CN201711136752.0A patent/CN107831940B/en active Active
- 2017-11-27 TW TW106141215A patent/TWI632499B/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197813A (en) * | 2012-01-05 | 2013-07-10 | 宏达国际电子股份有限公司 | Touch panel |
| CN203376735U (en) * | 2013-08-08 | 2014-01-01 | 敦泰科技有限公司 | Capacitive touch screen |
| CN105988608A (en) * | 2014-11-20 | 2016-10-05 | 宸鸿科技(厦门)有限公司 | Electrostatic protection touch control panel |
| TW201619776A (en) * | 2014-11-21 | 2016-06-01 | Interface Optoelectronics Shenzhen Co Ltd | Touch control device capable of reinforcing static protection effect |
| CN106325585A (en) * | 2015-07-10 | 2017-01-11 | 南京瀚宇彩欣科技有限责任公司 | ESD protection touch control structure |
| CN205827353U (en) * | 2016-06-08 | 2016-12-21 | 深圳市品触光电科技有限公司 | A kind of touch screen circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107831940A (en) | 2018-03-23 |
| TW201923527A (en) | 2019-06-16 |
| TWI632499B (en) | 2018-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107831940B (en) | Touch device with electrostatic protection capability | |
| US10062856B1 (en) | Flexible display substrate and flexible display apparatus | |
| US11209947B2 (en) | Touch structure and touch panel | |
| US10651208B2 (en) | Display device with different circuit groups | |
| CN106597713B (en) | Array substrate and display panel | |
| CN109064902B (en) | Display panel and display device | |
| CN107422932B (en) | Display panel, mobile terminal and driving method thereof | |
| CN108398822B (en) | Touch display substrate, display panel and display device | |
| CN110286532B (en) | Array substrate and display panel | |
| EP3278360B1 (en) | Array substrates, methods for fabricating the same, and display device containing the same | |
| US9323295B2 (en) | Touch panel | |
| CN114076648B (en) | Force sensing device and splicing device | |
| US20150199056A1 (en) | Touch panel | |
| US11631352B2 (en) | Display panel and display device | |
| CN212625559U (en) | Terminal connection structure, display unit and display | |
| CN111863885A (en) | Display panel to be cut, manufacturing method of display panel and display device | |
| CN112506371A (en) | Touch substrate and touch display device | |
| EP3828680B1 (en) | Meandering interconnect on a deformable substrate | |
| CN105549776A (en) | Touch display apparatus | |
| US11127669B2 (en) | Flexible display screen and flexible device | |
| CN113517262A (en) | Display panel, manufacturing method thereof and display device | |
| CN112987956A (en) | Electronic device | |
| KR102223784B1 (en) | Flexible circuit film and display apparatus having the same | |
| CN114585993B (en) | Touch Panel | |
| CN111857432B (en) | Touch substrate, touch display device and manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |