CN102778773A - Embedded touch panel - Google Patents
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- CN102778773A CN102778773A CN2012102367891A CN201210236789A CN102778773A CN 102778773 A CN102778773 A CN 102778773A CN 2012102367891 A CN2012102367891 A CN 2012102367891A CN 201210236789 A CN201210236789 A CN 201210236789A CN 102778773 A CN102778773 A CN 102778773A
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Abstract
The invention provides an embedded touch panel which comprises an array substrate and a color filter glass substrate, wherein the array substrate comprises a first transparent conductive layer, a second transparent conductive layer and a third metal layer, the first transparent conductive layer comprises a plurality of first transparent electrodes arranged in rows; the second transparent conductive layer comprises a plurality of second transparent electrodes which are arranged in columns and crossed with the first transparent electrodes; the third metal layer is arranged between the first and second transparent conductive layers, a first metal line of the third metal layer is carried with a part of sub-pixels and electrically connected with a touch signal, and a second metal line of the third metal layer is carried with the other part of sub-pixels and electrically connected with a common voltage. According to the embedded touch panel, the first metal line of the third metal layer is carried with a part of sub-pixels and electrically connected with the touch signal, and the second metal line of the third metal layer is carried with the other part of sub-pixels and electrically connected with the common voltage, so that the part of sub-pixels can perform touch function, and the other part of sub-pixels do not perform the touch function so as to reduce the RC (Resistance-Capacitance) load of a transmitting sensor.
Description
Technical field
The present invention relates to a kind of projected capacitive touch panel, relate in particular to the embedded profile plate structure in this projected capacitive touch panel.
Background technology
Current, along with updating of semiconductor technology and processing procedure, the research of touch panel function and liquid crystal panel being carried out integrated integration is popular day by day.Be arranged at the classic method of using on the liquid crystal panel with respect to touch panel; The technical research route of integrated integration mainly comprises two big types: In-cell mode and On-cell mode; Particularly; In-cell is meant that on-cell is meant touch panel function is embedded between colored filter substrate and the Polarizer with being embedded in the touch panel function in the liquid crystal pixel.Than the on-cell contact panel, the in-cell contact panel has panel slimming and light-weighted advantage, can reduce the thickness of manufacturing cost and panel.
On the other hand; The projecting type capacitor contact panel comprises superimposed layer glass or film up and down; The sensor that is provided with a plurality of argyle designs on glass of one deck wherein; Be used for detecting the X coordinate of two-dimensional coordinate system, another layer sensor that also is provided with a plurality of argyle designs on glass is used for detecting the Y coordinate of two-dimensional coordinate system.Each rhombus sensor comprises that pair of electrical holds, each electric capacity between have a symbiosis electric capacity, and produce electric boundary at sensor surface, see through nonconductors such as glass or film and project the screen outside.When the user directly touches glass; Control chip can periodically read the state of each the ITO electrode of panel meta in two-dimensional coordinate system; Earlier one pulse voltage is provided to a certain drive ports; Sensing ports from correspondence reads a relevant voltage again, through offering control chip after the conversion, can judge whether panel touch action takes place.
Traditional a solution is to be; Use in-cell type contact panel collocation AHVA (Advanced Hyper Viewing Angle; Ultraphotic angle high-resolution is technological) or AFFS (Advanced Fringe Field Switching; Senior fringe field switching technology); It is inboard and be positioned at the wire netting of black matrix below that receiving sensor (Rx) is set to colored filter substrate (CF substrate), sends the wire netting on the common electrode that sensor (Tx) is set to array base palte (Array substrate) side, and Rx is relative with receiving sensor.When sending sensor Tx drive signal, receiving sensor Rx can produce an inductance capacitance.When finger near the time also can produce an electric capacity, this electric capacity has destroyed the above-mentioned inductance capacitance that sends between sensor Tx and the receiving sensor Rx, and then the touch position that just can obtain pointing through circuit computing.
Yet; Each sub-pixel in the array base palte (such as Red sub-pixel, Green sub-pixel or Blue sub-pixel) is when carrying out touch controllable function; Thereby common electrode can receive such as influences such as pixel electrode, gate line, data lines and produce stray capacitance; This stray capacitance can be aggravated the RC load of contact panel, also can cause normally start of contact panel when this stray capacitance is excessive.In view of this, how designing a kind of improved touch panel structure providedly, when realizing touch control operation accurately, also can reduce the RC load of contact panel, is the problem that those skilled in the art need to be resolved hurrily.
Summary of the invention
Existing above-mentioned defective when using to embedded touch panel of the prior art the invention provides a kind of embedded touch panel of novelty.
According to one aspect of the present invention, a kind of embedded touch panel is provided, comprise an array basal plate and a colored filter glass substrate that is oppositely arranged with array base palte, this array base palte comprises:
One first transparency conducting layer comprises a plurality of first transparency electrodes of embarking on journey and arranging;
One second transparency conducting layer comprises second transparency electrode that a plurality of one-tenth row are arranged, and said second transparency electrode and said first transparency electrode are crisscross arranged; And
One the 3rd metal level is arranged between said first transparency conducting layer and said second transparency conducting layer, comprises one first metal wire and one second metal wire;
Wherein, said first metal wire carries a part of sub-pixel and is electrically connected to a touching signals, and said second metal wire carries another part sub-pixel and is electrically connected to a common electric voltage.
In one embodiment, first transparency electrode in every row is electrically connected to a drive signal line, and second transparency electrode in every row is electrically connected to said first metal wire and second metal wire by through hole.
Preferably, the black matrix below of colored filter glass substrate is provided with a first metal layer, and wherein, said the first metal layer is as a receiving sensor.
Preferably, first metal wire links to each other with said second transparency electrode and forms a transmission sensor, produces an inductance capacitance detection signal by said transmission sensor and said receiving sensor.
In one embodiment, second transparency electrode in every row is electrically connected to a drive signal line, and first transparency electrode in every row is electrically connected to said first metal wire and second metal wire by through hole.
Preferably, the black matrix below of colored filter glass substrate is provided with a first metal layer and one second metal level, wherein, is provided with a dielectric layer between said the first metal layer and said second metal level.
Preferably; Second metal level is arranged at the top of said dielectric layer; Said the first metal layer is arranged at the below of said dielectric layer, and wherein, said second metal level is as a receiving sensor; Said the first metal layer, first metal wire and said first transparency electrode form one and send sensor, produce an inductance capacitance detection signal by said transmission sensor and said receiving sensor.
Preferably, the thickness of dielectric layer is between 3 microns ~ 5 microns.
In one embodiment, it is M that first metal wire loads the pairing sub-pixel quantity of said touching signals, and it is N that said second metal wire loads the pairing sub-pixel quantity of said common electric voltage, and wherein, the ratio value between M and the N is adjustable, and M and N are natural number.
In one embodiment, the material of first transparency electrode or second transparency electrode is indium tin oxide or indium-zinc oxide.
Adopt embedded touch panel of the present invention; First metal wire is carried a part of sub-pixel and is electrically connected to a touching signals; And second metal wire carried another part sub-pixel and be electrically connected to a common electric voltage; Thereby make the sub-pixel of part carry out touch controllable function, and the sub-pixel of another part is not carried out touch controllable function so that reduce the RC load that sends sensor.In addition, but carry out touch controllable function and the sub-pixel quantity ratio flexible of not carrying out touch controllable function, and then realize that elasticity changes the effect of RC load.
Description of drawings
The reader with reference to advantages after the embodiment of the present invention, will become apparent various aspects of the present invention.Wherein,
Fig. 1 draws the structural representation of embedded touch panel of the prior art;
Fig. 2 illustrates the structural representation according to a specific embodiment of embedded touch panel of the present invention;
Fig. 3 illustrates the structural representation according to another specific embodiment of embedded touch panel of the present invention;
Fig. 4 illustrates the structural representation according to the another specific embodiment of embedded touch panel of the present invention; And
Fig. 5 (a) ~ 5 (f) illustrates in the embedded touch panel of Fig. 2, Fig. 3 or Fig. 4, is loaded with the sub-pixel of touching signals and does not load the distribution schematic diagram between the sub-pixel of touching signals.
Embodiment
For technology contents that the application is disclosed is more detailed and complete, can be with reference to accompanying drawing and following various specific embodiments of the present invention, identical mark is represented same or analogous assembly in the accompanying drawing.Yet the embodiment that those of ordinary skill in the art should be appreciated that hereinafter to be provided is used for limiting the scope that the present invention is contained.In addition, accompanying drawing only is used for schematically explaining, does not draw according to its life size.
With reference to the accompanying drawings, the embodiment of various aspects of the present invention is done further to describe in detail.
Fig. 1 draws the structural representation of embedded touch panel of the prior art.With reference to Fig. 1, this embedded touch panel comprises a colored filter glass substrate (being designated hereinafter simply as the CF substrate), array basal plate and the liquid crystal layer between CF substrate and array base palte 109.This CF substrate and this array base palte are oppositely arranged.
In CF substrate one side, black matrix 103 is positioned at the below of glass 101.Below black matrix layer 103, be provided with a conductive layer 105 that comprises a plurality of receiving sensor Rx, for example, each receiving sensor is the Y direction extension in the surface level upper edge.Then, dielectric layer 107 is positioned at the below of this conductive layer 105.
In array base palte one side, comprise first transparency conducting layer 115 and second transparency conducting layer 111, wherein, first transparency conducting layer 115 is positioned at the top of glass 117.Between first transparency conducting layer 115 and second transparency conducting layer 111, be provided with a dielectric layer 113.This second transparency conducting layer 111 comprises a plurality of transmission sensors, produces an inductance capacitance by these receiving sensors that send in sensor and the CF substrate.When people's finger touches glass 101, the inductance capacitance value of sending between sensor Tx and the receiving sensor Rx can change, and just can confirm concrete touch position through circuit computing.For example, each sends sensor X-direction extension in the surface level upper edge.
As previously mentioned, because a plurality of sub-pixels in the array base palte all are connected to corresponding transmission sensor Tx, that is each sub-pixel all is loaded with touching signals, carries out touch controllable function by this touching signals.Thus, each RC load that sends on the sensor Tx will be very heavy, also can cause normally start of contact panel when serious.
In order to improve the defective or the deficiency of above-mentioned RC load aspect, Fig. 2 illustrates the structural representation according to a specific embodiment of embedded touch panel of the present invention.
With reference to Fig. 2, this embedded touch panel also comprises a CF substrate, array basal plate and the liquid crystal layer between CF substrate and array base palte.To array base palte, it comprises one first transparency conducting layer ITO1, one second transparency conducting layer 209 and one the 3rd metal level (not shown).
Particularly, the first transparency conducting layer ITO1 is positioned at the top of glass 215, also is provided with insulation course 213 in the both sides of this first transparency conducting layer ITO 1.This first transparency conducting layer ITO 1 comprises a plurality of first transparency electrodes of embarking on journey and arranging.This second transparency conducting layer comprises the second transparency electrode ITO2 that a plurality of one-tenth row are arranged, and the second transparency electrode ITO2 and the first transparency electrode ITO1 are crisscross arranged.For example, first transparency electrode is along the X-direction setting, and second transparency electrode is along the Y direction setting.Perhaps, first transparency electrode is along the Y direction setting, and second transparency electrode is along the X-direction setting.
In CF substrate one side, the black matrix 203 that is provided with a colorful optical filter resin and is positioned at its both sides in glass 201 belows.Under the black matrix 203 a first metal layer M1 (being labeled as 205) is set, the scope of the first metal layer does not exceed the scope of black matrix 203.First dielectric layer 207 is positioned at the below of the first metal layer.When carrying out the touch control operation detection, the first metal layer is as receiving sensor Rx, and the second transparency electrode ITO2 utilizes the inductance capacitance numerical value between receiving sensor Rx and the transmission sensor Tx to judge whether that the touch-control behavior takes place as sending sensor Tx.
It is emphasized that the 3rd metal level that is arranged between first transparency conducting layer and second transparency conducting layer has one first metal wire and one second metal wire.Though first metal wire and second metal wire on the 3rd metal level all are electrically connected to second transparency electrode; But; First metal wire links to each other with the second transparency electrode ITO2 and forms a transmission sensor Tx, produces an inductance capacitance detection signal by this transmission sensor Tx and receiving sensor Rx.On the other hand, be connected on first metal wire of a part of sub-pixel and be loaded with touching signals really, and then carry out touch controllable function; And second metal wire that is connected to another part sub-pixel is electrically connected to a common electric voltage Vcom, and does not load touching signals, and it does not carry out touch controllable function.
In one embodiment, first transparency electrode in every row is electrically connected to a drive signal line (that is, as pixel electrode), and second transparency electrode in every row is electrically connected to first metal wire and second metal wire by through hole.
It will be understood by those of skill in the art that the foregoing description is that ITO (indium tin oxide) schematically describes with the material of transparency electrode, but the present invention has more than and is confined to this.For example, the material of this transparency electrode also can be IZO (indium-zinc oxide).
Fig. 3 illustrates the structural representation according to another specific embodiment of embedded touch panel of the present invention.Different with Fig. 2 is, the first transparency electrode ITO1 in every row is electrically connected to first metal wire and second metal wire by through hole, and the second transparency electrode ITO2 in every row is electrically connected to a drive signal line.
In the embodiment shown in fig. 3, the black matrix 303 of CF substrate and colorful optical filter resin are positioned at the below of glass 301.The below that should deceive matrix 303 is respectively equipped with a first metal layer M1 (being labeled as 309) and one second metal level M2 (being labeled as 305).Be provided with one first dielectric layer 307 between the first metal layer M1 and the second metal level M2, and below the first metal layer M1, one second dielectric layer 311 can be set also.For example, the thickness of first dielectric layer 307 is between between the 3um to 5um.And for example, the thickness of second dielectric layer 311 is at least 10um.
In array base palte one side, comprise one first transparency conducting layer ITO 1 and one second transparency conducting layer ITO2, the first transparency conducting layer ITO 1 is positioned at the top of glass 315, and the second transparency conducting layer ITO2 is positioned at the below of liquid crystal layer.In addition, insulation course 313 is arranged between the first transparency conducting layer ITO1 and the second transparency conducting layer ITO2.
In this embodiment, the second metal level M2 is as a receiving sensor Rx, and the first metal layer M1, first metal wire and first transparency electrode form one and send sensor Tx, produces an inductance capacitance detection signal by sending sensor Tx and receiving sensor Rx.At this moment, the second transparency electrode ITO2 is electrically connected to a drive signal line, and the first transparency electrode ITO1 is electrically connected to a common electric voltage.
Still need point out, in this embodiment, be connected on first metal wire of a part of sub-pixel and be loaded with touching signals, and then can carry out touch controllable function; And second metal wire that is connected to another part sub-pixel is electrically connected to a common electric voltage Vcom, because of not loading touching signals, so do not carry out touch controllable function, reduces the RC load that sends sensor Tx by this.
Fig. 4 illustrates the structural representation according to the another specific embodiment of embedded touch panel of the present invention.
With reference to Fig. 4, in CF substrate one side, black matrix 403 and colorful optical filter resin are positioned at the below of glass 401, the first metal layer M1 (being labeled as 405) be arranged at black matrix 403 under.In addition, below the first metal layer M1, be provided with one first dielectric layer 407.In array base palte one side, the first transparency conducting layer ITO1 is positioned at the top of glass 413, and the second transparency conducting layer ITO2 (being labeled as 409) is positioned at the below of liquid crystal layer.Between the first transparency conducting layer ITO1 and the second transparency conducting layer ITO2, be provided with an insulation course 411.
Fig. 4 and Fig. 2 are compared, and the first metal layer M1 is all as receiving sensor Rx.But in Fig. 4, the first transparency conducting layer ITO1 that is electrically connected to first metal wire is as sending sensor Tx, and the second transparency conducting layer ITO2 is electrically connected to a drive signal line.
Fig. 5 (a) ~ 5 (f) illustrates in the embedded touch panel of Fig. 2, Fig. 3 or Fig. 4, is loaded with the sub-pixel of touching signals and does not load the distribution schematic diagram between the sub-pixel of touching signals.
With Fig. 5 (a) is example; In the transmission sensor Tx of first row, 3 subpixels in 9 subpixels (rectangular block of band point) are loaded with touching signals, can carry out touch controllable function; 6 subpixels in addition do not load touching signals, and it just provides the common electric voltage signal when showing.At this moment, the quantity ratio of two types of sub-pixels (loading the sub-pixel and the sub-pixel that does not load touching signals of touching signals) is 1:2.And in Fig. 5 (b), the ratio of these two types of sub-pixels is 1:8; In Fig. 5 (c), the ratio of these two types of sub-pixels is 2:1; In Fig. 5 (e), the ratio of these two types of sub-pixels is 1:1.
In addition, can find out also that in certain embodiments, it is identical that transmission sensor Tx that also can different rows and the connected mode of sub-pixel are set to, shown in Fig. 5 (d) through Fig. 5 (d) and Fig. 5 (f).In certain embodiments; Transmission sensor Tx that also can different rows is set to different with the connected mode of sub-pixel; Shown in Fig. 5 (f); For example, the sub-pixel that the transmission sensor Tx of the 1st row is connected all is loaded with touching signals, and the sub-pixel that the transmission sensor Tx of the 2nd row is connected does not all load touching signals.
Adopt embedded touch panel of the present invention; First metal wire is carried a part of sub-pixel and is electrically connected to a touching signals; And second metal wire carried another part sub-pixel and be electrically connected to a common electric voltage; Thereby make the sub-pixel of part carry out touch controllable function, and the sub-pixel of another part is not carried out touch controllable function so that reduce the RC load that sends sensor.In addition, but carry out touch controllable function and the sub-pixel quantity ratio flexible of not carrying out touch controllable function, and then realize that elasticity changes the effect of RC load.
In the preceding text, illustrate and describe embodiment of the present invention.But those skilled in the art can understand, and under situation without departing from the spirit and scope of the present invention, can also specific embodiments of the invention do various changes and replacement.These changes and replacement all drop in claims of the present invention institute restricted portion.
Claims (10)
1. embedded touch panel, comprise array basal plate and with the colored filter glass substrate that said array base palte is oppositely arranged, it is characterized in that said array base palte comprises:
One first transparency conducting layer comprises a plurality of first transparency electrodes of embarking on journey and arranging;
One second transparency conducting layer comprises second transparency electrode that a plurality of one-tenth row are arranged, and said second transparency electrode and said first transparency electrode are crisscross arranged; And
One the 3rd metal level is arranged between said first transparency conducting layer and said second transparency conducting layer, comprises one first metal wire and one second metal wire;
Wherein, said first metal wire carries a part of sub-pixel and is electrically connected to a touching signals, and said second metal wire carries another part sub-pixel and is electrically connected to a common electric voltage.
2. embedded touch panel according to claim 1 is characterized in that, first transparency electrode in every row is electrically connected to a drive signal line, and second transparency electrode in every row is electrically connected to said first metal wire and second metal wire by through hole.
3. embedded touch panel according to claim 2 is characterized in that, the black matrix below of said colored filter glass substrate is provided with a first metal layer, and wherein, said the first metal layer is as a receiving sensor.
4. embedded touch panel according to claim 3; It is characterized in that; Said first metal wire links to each other with said second transparency electrode and forms a transmission sensor, produces an inductance capacitance detection signal by said transmission sensor and said receiving sensor.
5. embedded touch panel according to claim 1 is characterized in that, second transparency electrode in every row is electrically connected to a drive signal line, and first transparency electrode in every row is electrically connected to said first metal wire and second metal wire by through hole.
6. embedded touch panel according to claim 5; It is characterized in that; The black matrix below of said colored filter glass substrate is provided with a first metal layer and one second metal level, wherein, is provided with a dielectric layer between said the first metal layer and said second metal level.
7. embedded touch panel according to claim 6 is characterized in that said second metal level is arranged at the top of said dielectric layer, and said the first metal layer is arranged at the below of said dielectric layer, wherein,
Said second metal level is as a receiving sensor, and said the first metal layer, first metal wire and said first transparency electrode form one and send sensor, produce an inductance capacitance detection signal by said transmission sensor and said receiving sensor.
8. embedded touch panel according to claim 6 is characterized in that, the thickness of said dielectric layer is between 3 microns ~ 5 microns.
9. embedded touch panel according to claim 1; It is characterized in that; It is M that said first metal wire loads the pairing sub-pixel quantity of said touching signals, and it is N that said second metal wire loads the pairing sub-pixel quantity of said common electric voltage, wherein; Ratio value between M and the N is adjustable, and M and N are natural number.
10. embedded touch panel according to claim 1 is characterized in that, the material of said first transparency electrode or second transparency electrode is indium tin oxide or indium-zinc oxide.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102367891A CN102778773A (en) | 2012-07-09 | 2012-07-09 | Embedded touch panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102367891A CN102778773A (en) | 2012-07-09 | 2012-07-09 | Embedded touch panel |
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| CN102778773A true CN102778773A (en) | 2012-11-14 |
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| CN2012102367891A Pending CN102778773A (en) | 2012-07-09 | 2012-07-09 | Embedded touch panel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336632A (en) * | 2013-07-05 | 2013-10-02 | 南昌欧菲光显示技术有限公司 | Optical filter assembly and touch display screen using same |
| CN105308542A (en) * | 2013-06-19 | 2016-02-03 | 凸版印刷株式会社 | Substrate for display device, and display device |
| CN104076551B (en) * | 2014-06-25 | 2016-08-24 | 京东方科技集团股份有限公司 | A kind of color membrane substrates and preparation method thereof, display floater, display device |
| US9606679B2 (en) | 2013-04-23 | 2017-03-28 | Industrial Technology Research Institute | Touch panel and manufacturing method thereof and touch display panel |
| CN107908304A (en) * | 2017-09-29 | 2018-04-13 | 信利（惠州）智能显示有限公司 | A kind of Wiring method of touch-control line |
| CN110265568A (en) * | 2019-06-04 | 2019-09-20 | 武汉华星光电半导体显示技术有限公司 | A kind of display device and preparation method thereof |
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2012
- 2012-07-09 CN CN2012102367891A patent/CN102778773A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9606679B2 (en) | 2013-04-23 | 2017-03-28 | Industrial Technology Research Institute | Touch panel and manufacturing method thereof and touch display panel |
| CN105308542A (en) * | 2013-06-19 | 2016-02-03 | 凸版印刷株式会社 | Substrate for display device, and display device |
| CN105308542B (en) * | 2013-06-19 | 2018-01-16 | 凸版印刷株式会社 | Base board for display device and display device |
| CN103336632A (en) * | 2013-07-05 | 2013-10-02 | 南昌欧菲光显示技术有限公司 | Optical filter assembly and touch display screen using same |
| CN103336632B (en) * | 2013-07-05 | 2016-07-06 | 南昌欧菲光显示技术有限公司 | Optical filter box and use the touch display screen of this optical filter box |
| CN104076551B (en) * | 2014-06-25 | 2016-08-24 | 京东方科技集团股份有限公司 | A kind of color membrane substrates and preparation method thereof, display floater, display device |
| CN107908304A (en) * | 2017-09-29 | 2018-04-13 | 信利（惠州）智能显示有限公司 | A kind of Wiring method of touch-control line |
| CN107908304B (en) * | 2017-09-29 | 2021-06-01 | 信利（惠州）智能显示有限公司 | Wiring method of touch wire |
| CN110265568A (en) * | 2019-06-04 | 2019-09-20 | 武汉华星光电半导体显示技术有限公司 | A kind of display device and preparation method thereof |
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Application publication date: 20121114 |