CN103019451A - On glass solution (OGS) touch panel - Google Patents
On glass solution (OGS) touch panel Download PDFInfo
- Publication number
- CN103019451A CN103019451A CN 201210570505 CN201210570505A CN103019451A CN 103019451 A CN103019451 A CN 103019451A CN 201210570505 CN201210570505 CN 201210570505 CN 201210570505 A CN201210570505 A CN 201210570505A CN 103019451 A CN103019451 A CN 103019451A
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- touch panel
- insulating layer
- ogs
- conductive pattern
- liquid crystal
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- 239000011521 glass Substances 0.000 title claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 39
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 41
- 238000012360 testing method Methods 0.000 claims description 5
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000003068 static effect Effects 0.000 description 16
- 230000005611 electricity Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 8
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000006059 cover glass Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The invention provides an on glass solution (OGS) touch panel. The OGS touch panel comprises a liquid crystal module, a touch sensing element, a plurality of metal cables, a glass substrate and an electric conduction pattern, wherein the touch sensing element is arranged on a first insulating layer; the metal cables are arranged on a second insulating layer and are electrically connected with the touch sensing element; the glass substrate is arranged above the second insulating layer; and the electric conduction pattern is positioned outside the scope of the liquid crystal module, and the OGS touch panel utilizes the electric conduction pattern for electrostatic protection. After the OGS touch panel is adopted, the integral region or net structural electric conduction pattern is utilized to wrap the metal cables, accordingly, under the premise of not increasing the cost or production process, the electrostatic damage of circuits, the touch sensing element or other electronic devices can be effectively prevented, so that the integral electrostatic protection capability of the touch panel is improved.
Description
Technical Field
The present invention relates to a touch panel, and more particularly, to an OGS (One glass solution) touch panel.
Background
In recent years, touch technology is widely applied to various multimedia electronic products, especially portable mobile electronic products such as mobile phones, electronic books, tablet computers, and the like. The touch technology is used as an input means, so that the existing input method of a keyboard or a mouse can be effectively replaced. Besides convenience, due to the intuition of operation, the touch input method has become a very popular interactive method between human-computer interface and multimedia.
Generally, in the manufacturing process of the touch panel, a guard ring (guard ring) is usually formed in the peripheral region of the touch panel and disposed outside the signal connection lines. For example, the guard ring usually employs a grounded metal circuit with wider routing, and the guard ring can effectively reduce the phenomenon that the noise signal of the external environment affects the electronic signal inside the touch panel. In addition, the touch panel is further provided with an electrostatic protection element to effectively reduce the electrostatic discharge phenomenon in the touch panel.
For the electrostatic protection of the OGS touch panel, one solution in the prior art is to use a ground line with wider trace lines to surround a signal connection line, which is electrically connected to the touch sensing device, however, the electrostatic protection capability of the solution is poor, especially in the case that the signal connection line is located outside the range of the liquid crystal module. Another solution consists in covering the signal connection lines with insulating or low-conductive materials, such as insulating coatings, tapes, inks, etc. Although the static electricity protection capability of the framework is slightly better, the cost and the production flow are increased.
In view of the above, a need exists in the art for a touch panel that can rapidly dissipate static electricity in the touch panel without increasing the manufacturing cost and the manufacturing process, and prevent the touch sensing device, the signal connection circuit, or other electronic devices from being damaged by static electricity.
Disclosure of Invention
Aiming at the defects of the OGS touch panel in the prior art in the electrostatic protection design, the invention provides a novel OGS touch panel.
In accordance with an aspect of the present invention, there is provided an OGS touch panel including:
a liquid crystal module;
the touch sensing element is arranged on a first insulating layer, and the first insulating layer is positioned above the liquid crystal module;
the touch sensing device comprises a plurality of metal wires, a first insulating layer and a second insulating layer, wherein the metal wires are arranged on the first insulating layer;
the glass substrate is arranged above the second insulating layer; and
and the conductive pattern is positioned outside the range of the liquid crystal module and arranged on the first insulating layer, and the OGS touch panel carries out electrostatic protection by virtue of the conductive pattern.
Preferably, the conductive pattern is an integral region to surround the metal traces.
Preferably, the conductive pattern is a mesh structure to surround the metal traces.
Preferably, the conductive pattern is a mesh structure and partially overlaps the metal traces, so as to perform electrostatic protection on the metal traces outside the range of the liquid crystal module.
Preferably, the conductive pattern is electrically connected to a ground pin of a flexible circuit board.
Preferably, the potential of the conductive pattern is floating.
Preferably, the conductive pattern is made of indium tin oxide.
Preferably, the OGS touch panel further includes an adhesive layer for adhering the liquid crystal module and the first insulating layer.
In accordance with another aspect of the present invention, there is provided an OGS touch panel including:
a liquid crystal module;
the touch sensing element is arranged on a first insulating layer, and the first insulating layer is positioned above the liquid crystal module;
the touch sensing device comprises a plurality of metal wires, a first insulating layer and a second insulating layer, wherein the metal wires are arranged on the first insulating layer;
the glass substrate is arranged above the second insulating layer; and
the conductive pattern covers a short bar (shorting bar) of the OGS touch panel for array test, and is electrically grounded so as to realize electrostatic protection of the OGS touch panel.
Preferably, the conductive pattern is made of indium tin oxide.
By adopting the OGS touch panel, the conductive pattern is arranged outside the range of the liquid crystal module, and the metal routing is coated by the conductive pattern such as an integral area or a mesh structure, so that on the premise of not increasing the cost or the production process, the circuits, the touch sensing elements or other electronic devices can be effectively prevented from being damaged by static electricity, and the integral static protection capability of the touch panel is improved. In addition, the OGS touch panel of the present invention can cover only the shorting bar for array test with the conductive pattern, and the static electricity inside the touch panel is discharged to the ground through the conductive pattern by the static electricity conducting path provided by the shorting bar.
Drawings
The various aspects of the present invention will become more apparent to the reader after reading the detailed description of the invention with reference to the attached drawings. Wherein,
fig. 1(a) is a schematic structural diagram of an OGS touch panel for electrostatic protection according to an embodiment of the present invention;
FIG. 1(b) shows an alternative embodiment of the OGS touch panel of FIG. 1 (a);
fig. 2(a) is a schematic structural diagram of an OGS touch panel for electrostatic protection according to another embodiment of the present invention;
FIG. 2(b) shows another view of the OGS touch panel of FIG. 2 (a);
fig. 3(a) is a schematic structural diagram of an OGS touch panel for electrostatic protection according to another embodiment of the present invention;
FIG. 3(b) shows an alternative embodiment of the OGS touch panel of FIG. 3 (a); and
fig. 4 is a schematic structural diagram of an OGS touch panel for electrostatic protection according to still another embodiment of the invention.
Detailed Description
In order to make the present disclosure more complete and complete, reference is made to the accompanying drawings, in which like references indicate similar or analogous elements, and to the various embodiments of the invention described below. However, it will be understood by those of ordinary skill in the art that the examples provided below are not intended to limit the scope of the present invention. In addition, the drawings are only for illustrative purposes and are not drawn to scale.
As described above, the conventional OGS (One Glass Solution) touch panel uses a ground line with wide traces to surround the signal connection lines connected to the touch sensing elements, so as to perform electrostatic protection on the signal connection lines. However, the electrostatic protection capability of this solution is poor, and especially when a part of the signal connection circuit is outside the liquid crystal module, the grounding circuit cannot perform electrostatic protection on the part of the signal connection circuit. In addition, although insulating or low-conductivity materials may be used to cover the signal connection lines, they increase the cost and production process.
In order to effectively solve the above-mentioned troubles in the prior art, the present invention provides a novel OGS touch panel architecture. Fig. 1(a) is a schematic structural diagram of an OGS touch panel for electrostatic protection according to an embodiment of the invention.
Referring to fig. 1(a), the OGS touch panel of the present invention includes a Liquid Crystal Module (LCM) 100, a touch sensing device 104, a plurality of metal traces 108, a glass substrate (cover glass) 110, and a conductive pattern 112.
Specifically, the touch sensing device 104 is disposed on a first insulating layer 102, and the first insulating layer 102 is located above the liquid crystal module 100. The metal traces 108 are disposed on a second insulating layer 106, and the second insulating layer 106 is disposed above the first insulating layer 102. The metal traces 108 are electrically connected to the touch sensing element 104. In addition, in order to cover the metal trace 108, a shielding layer may be disposed below the glass substrate 110, and the metal trace 108 is hidden by the shielding layer. For example, the layout area of the shielding layer may be slightly larger than the routing area of the metal traces 108.
The glass substrate 110 is disposed above the second insulating layer 106. When the glass substrate 110 is pressed, the actual pressing position is detected by the touch sensing element 104 on the first insulating layer 102, and a control command corresponding to the pressing position is executed or a corresponding graphical interface is displayed. It should be noted that the OGS touch panel of the present invention further includes a conductive pattern 112, and the conductive pattern 112 is an integral area, as shown in fig. 1 (a). Preferably, the conductive pattern 112 is made of Indium Tin Oxide (ITO). The conductive pattern 112 is located outside the range of the liquid crystal module 100 and is disposed on the first insulating layer 102. For example, the conductive pattern 112 is formed at the same time as the touch sensing element 104 is formed.
Therefore, by using the OGS touch panel of the present invention, without increasing the cost or the manufacturing process, the metal traces 108, the touch sensing element 104, or other electronic devices can be effectively prevented from being damaged by static electricity by the conductive pattern 112, so that the overall static electricity protection capability of the OGS touch panel is improved.
In one embodiment, the OGS touch panel further includes an adhesive layer 114. The adhesive layer 114 is disposed between the first insulating layer 102 and the liquid crystal module 100 for adhering the liquid crystal module 100 and the first insulating layer 102.
Fig. 1(b) illustrates an alternative embodiment of the OGS touch panel of fig. 1 (a). Referring to fig. 1(a) and 1(b), the alternative embodiment is different in that the conductive pattern 112 has a mesh structure. It is easy to understand that the conductive pattern of the mesh structure can also perform electrostatic protection on the metal traces 108, the touch sensing element 104 or other electronic devices.
Fig. 2(a) is a schematic structural diagram of an OGS touch panel for electrostatic protection according to another embodiment of the present invention. Fig. 2(b) illustrates another view of the OGS touch panel of fig. 2 (a).
Similar to fig. 1(a), in the embodiment, the OGS touch panel includes a Liquid Crystal Module (LCM) 100, a touch sensing device 104, a plurality of metal traces 108, a glass substrate (cover glass) 110, and a conductive pattern 312. It should be noted that, in order to perform the electrostatic protection on a portion of the metal traces 108 outside the liquid crystal module 100, the conductive pattern 312 is designed to be a mesh structure, and the conductive pattern 312 is partially overlapped with the metal traces 108.
In more detail, in fig. 2(a), one side of the conductive pattern 312 is positioned on the same line in the vertical direction as the edge of the liquid crystal module 100. When a part of the metal traces 108 is beyond the range of the liquid crystal module 100, the conductive pattern 312 can be effectively protected from static electricity because the layout area of the conductive pattern is enough to surround and cover the part of the traces. In other words, the projection of the metal trace 108 in the horizontal direction overlaps the projection of the conductive pattern 312 in the horizontal direction, and the metal trace 108 corresponding to the overlapping region is subjected to electrostatic protection by the conductive pattern 312.
In one embodiment, the OGS touch panel further includes a Flexible Printed Circuit (FPC) 116, one part of the terminals of the FPC is electrically connected to each of the metal traces 108, and the other part of the terminals is electrically connected to the ground traces GND, as shown in fig. 2 (b).
Fig. 3(a) is a schematic structural diagram of an OGS touch panel for electrostatic protection according to another embodiment of the present invention. Fig. 3(b) illustrates an alternative embodiment of the OGS touch panel in fig. 3 (a).
The main difference between fig. 3(a) and fig. 2(b) is that the flexible circuit board 216 of the OGS touch panel includes two ground terminals Pin. The conductive pattern 412 of the OGS touch panel covers and surrounds the metal trace 108, and is also electrically connected to the ground terminal Pin of the flexible circuit board 216. As a result, the static electricity in the panel is discharged to the ground through the conductive pattern 412 and the ground terminal Pin.
Of course, in the alternative embodiment shown in fig. 3(b), the potential of the conductive pattern 412 is not necessarily the ground potential. For example, the conductive pattern 412 is not connected to the ground terminal of the flexible circuit board 216, and the potential thereof is a floating level (floating level), and the ring structure of the conductive pattern 412 can also achieve electrostatic protection of the metal traces 108 and/or the touch sensing element 104.
Fig. 4 is a schematic structural diagram of an OGS touch panel for electrostatic protection according to still another embodiment of the invention.
It should be understood that the OGS touch panel of fig. 4 is the same as or similar to the OGS touch panel of fig. 1, and common components or structures are not repeated for convenience of description.
In the embodiment of fig. 4, the OGS touch panel includes a shorting bar 500. The conductive pattern 512 covers the shorting bar 500 for array testing, and the conductive pattern 512 is electrically connected to a ground terminal of a flexible circuit board, so that static electricity occurring in the panel can be discharged to the ground.
By adopting the OGS touch panel, the conductive pattern is arranged outside the range of the liquid crystal module, and the metal routing is coated by the conductive pattern such as an integral area or a mesh structure, so that on the premise of not increasing the cost or the production process, the circuits, the touch sensing elements or other electronic devices can be effectively prevented from being damaged by static electricity, and the integral static protection capability of the touch panel is improved. In addition, the OGS touch panel of the present invention can cover only the shorting bar for array test with the conductive pattern, and the static electricity inside the touch panel is discharged to the ground through the conductive pattern by the static electricity conducting path provided by the shorting bar.
Hereinbefore, specific embodiments of the present invention are described with reference to the drawings. However, those skilled in the art will appreciate that various modifications and substitutions can be made to the specific embodiments of the present invention without departing from the spirit and scope of the invention. Such modifications and substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (10)
1. An OGS (One Glass Solution) touch panel adapted to improve electrostatic protection capability, the OGS touch panel comprising:
a liquid crystal module;
the touch sensing element is arranged on a first insulating layer, and the first insulating layer is positioned above the liquid crystal module;
the touch sensing device comprises a plurality of metal wires, a first insulating layer and a second insulating layer, wherein the metal wires are arranged on the first insulating layer;
the glass substrate is arranged above the second insulating layer; and
and the conductive pattern is positioned outside the range of the liquid crystal module and arranged on the first insulating layer, and the OGS touch panel carries out electrostatic protection by virtue of the conductive pattern.
2. The OGS touch panel of claim 1, wherein the conductive pattern is an integral area surrounding the metal traces.
3. The OGS touch panel of claim 1, wherein the conductive pattern is a mesh structure surrounding the metal traces.
4. The OGS touch panel of claim 1, wherein the conductive pattern is a mesh structure and partially overlaps the metal traces, thereby performing electrostatic protection on the metal traces outside the liquid crystal module.
5. The OGS touch panel of claim 1, wherein the conductive pattern is electrically connected to a ground pin of a flexible circuit board.
6. The OGS touch panel of claim 1, wherein the conductive pattern is floating (floating) in potential.
7. The OGS touch panel of claim 1, wherein the conductive pattern is made of ITO.
8. The OGS touch panel of claim 1, further comprising an adhesive layer for bonding the liquid crystal module and the first insulating layer.
9. An OGS (One Glass Solution) touch panel adapted to improve electrostatic protection capability, the OGS touch panel comprising:
a liquid crystal module;
the touch sensing element is arranged on a first insulating layer, and the first insulating layer is positioned above the liquid crystal module;
the touch sensing device comprises a plurality of metal wires, a first insulating layer and a second insulating layer, wherein the metal wires are arranged on the first insulating layer;
the glass substrate is arranged above the second insulating layer; and
the conductive pattern covers a short bar (shorting bar) of the OGS touch panel for array test, and is electrically grounded so as to realize electrostatic protection of the OGS touch panel.
10. The OGS touch panel of claim 9, wherein the conductive pattern is made of ITO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210570505 CN103019451A (en) | 2012-12-25 | 2012-12-25 | On glass solution (OGS) touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210570505 CN103019451A (en) | 2012-12-25 | 2012-12-25 | On glass solution (OGS) touch panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103019451A true CN103019451A (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210570505 Pending CN103019451A (en) | 2012-12-25 | 2012-12-25 | On glass solution (OGS) touch panel |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103324345A (en) * | 2013-06-11 | 2013-09-25 | 业成光电（深圳）有限公司 | Touch panel and electronic device |
| CN103488333A (en) * | 2013-06-11 | 2014-01-01 | 友达光电股份有限公司 | Touch panel and manufacturing method of touch display panel |
| CN104252261A (en) * | 2013-06-26 | 2014-12-31 | 达鸿先进科技股份有限公司 | Electrostatic protection structure of touch panel, manufacturing method and touch device thereof |
| CN104699290A (en) * | 2013-12-09 | 2015-06-10 | 胜华科技股份有限公司 | Touch panel |
| CN105183219A (en) * | 2015-08-26 | 2015-12-23 | 京东方科技集团股份有限公司 | Substrate, making method of substrate and display device adopting substrate |
| CN105607769A (en) * | 2014-11-20 | 2016-05-25 | 宸鸿科技(厦门)有限公司 | Touch panel and touch device with touch panel |
| CN107765923A (en) * | 2017-11-07 | 2018-03-06 | 信利光电股份有限公司 | A kind of preparation method of touch-screen |
| WO2018232692A1 (en) * | 2017-06-22 | 2018-12-27 | Boe Technology Group Co., Ltd. | Touch substrate, touch control display apparatus, and method of fabricating a touch substrate |
-
2012
- 2012-12-25 CN CN 201210570505 patent/CN103019451A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103488333B (en) * | 2013-06-11 | 2016-06-01 | 友达光电股份有限公司 | Touch panel and manufacturing method of touch display panel |
| CN103488333A (en) * | 2013-06-11 | 2014-01-01 | 友达光电股份有限公司 | Touch panel and manufacturing method of touch display panel |
| TWI489118B (en) * | 2013-06-11 | 2015-06-21 | Au Optronics Corp | Touch panel and manufacturing method of touch display panel |
| US9513670B2 (en) | 2013-06-11 | 2016-12-06 | Au Optronics Corporation | Touch panel and manufacturing method of touch display panel |
| CN103324345A (en) * | 2013-06-11 | 2013-09-25 | 业成光电（深圳）有限公司 | Touch panel and electronic device |
| CN104252261A (en) * | 2013-06-26 | 2014-12-31 | 达鸿先进科技股份有限公司 | Electrostatic protection structure of touch panel, manufacturing method and touch device thereof |
| CN104699290A (en) * | 2013-12-09 | 2015-06-10 | 胜华科技股份有限公司 | Touch panel |
| CN105607769A (en) * | 2014-11-20 | 2016-05-25 | 宸鸿科技(厦门)有限公司 | Touch panel and touch device with touch panel |
| CN105607769B (en) * | 2014-11-20 | 2018-10-26 | 宸鸿科技(厦门)有限公司 | Touch panel and the touch device with the touch panel |
| CN105183219A (en) * | 2015-08-26 | 2015-12-23 | 京东方科技集团股份有限公司 | Substrate, making method of substrate and display device adopting substrate |
| WO2018232692A1 (en) * | 2017-06-22 | 2018-12-27 | Boe Technology Group Co., Ltd. | Touch substrate, touch control display apparatus, and method of fabricating a touch substrate |
| CN109429516A (en) * | 2017-06-22 | 2019-03-05 | 京东方科技集团股份有限公司 | Touch the method that substrate, touch control display device and manufacture touch substrate |
| US11126314B2 (en) | 2017-06-22 | 2021-09-21 | Boe Technology Group Co., Ltd. | Touch substrate, touch control display apparatus, and method of fabricating a touch substrate |
| CN107765923A (en) * | 2017-11-07 | 2018-03-06 | 信利光电股份有限公司 | A kind of preparation method of touch-screen |
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Application publication date: 20130403 |