CN103186297A - Capacitive touch liquid crystal display panel and liquid crystal display device - Google Patents
Capacitive touch liquid crystal display panel and liquid crystal display device Download PDFInfo
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- CN103186297A CN103186297A CN201110446669XA CN201110446669A CN103186297A CN 103186297 A CN103186297 A CN 103186297A CN 201110446669X A CN201110446669X A CN 201110446669XA CN 201110446669 A CN201110446669 A CN 201110446669A CN 103186297 A CN103186297 A CN 103186297A
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- 230000006698 induction Effects 0.000 claims abstract description 135
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- 238000001514 detection method Methods 0.000 claims abstract description 10
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- 239000010408 film Substances 0.000 claims description 5
- 230000005684 electric field Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000003071 parasitic effect Effects 0.000 abstract 2
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- 238000005516 engineering process Methods 0.000 description 9
- 239000011521 glass Substances 0.000 description 7
- 230000001939 inductive effect Effects 0.000 description 7
- 238000002161 passivation Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000002356 single layer Substances 0.000 description 4
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- 230000008901 benefit Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a capacitive touch liquid crystal display panel and a liquid crystal display device, wherein the touch liquid crystal display panel adopts an IPS/FFS driving mode, and comprises a driving electrode and an induction electrode which are arranged on one side of a touch substrate facing a liquid crystal layer; and the driving common electrode and the induction common electrode are arranged on one side of the array substrate, which faces the liquid crystal layer, and are separated from each other, and are respectively connected to the common voltage output end. The liquid crystal display device comprises the display panel. The display panel greatly increases the resistance and the inductance between the driving common electrode and the induction common electrode, and greatly reduces the alternating current signals which are sent by the signal source and reach the detection circuit through the driving parasitic capacitance and the induction parasitic capacitance which are connected in series, so that larger substrate signals can not be formed at the detection circuit, and the problem of detection failure is avoided.
Description
Technical field
The invention belongs to field of liquid crystal display, relate in particular to a kind of capacitance touch display panels and use the liquid crystal indicator of this capacitance touch display panels.
Background technology
Touch-screen is the simplest, convenient, natural at present a kind of man-machine interaction mode as a kind of input media.Therefore, touch-screen more and more is applied in the various electronic products, for example mobile phone, notebook computer, MP3/MP4 etc.For reducing the cost of various electronic equipments, make various electronic equipments more frivolous, touch-screen is integrated in the display panels usually.According to principle of work with detect the different of touch information medium, touch-screen can be divided into four types of resistance-type, condenser type, infrared-type and surface acoustic waves.The capacitive touch screen technology is because characteristics such as technology is simple, life of product length, transmittance height become the touch screen technology of present main flow.
As Fig. 1, Fig. 2 and shown in Figure 3; existing a kind of capacitive touch screen comprises: glass substrate 10; be arranged on described glass substrate 10 lip-deep driving layers 11; be arranged on described driving layer 11 lip-deep insulating medium layer 12; be arranged on described insulating medium layer 12 lip-deep inductive layers 13, and be arranged on described inductive layer 13 lip-deep protective seams 14.Described driving layer 11 comprises a plurality of drive electrodes 111, each drive electrode 111 is brilliant, described a plurality of drive electrode 111 is regularly arranged on described glass substrate 10 surfaces, and is electrically connected by many drive wire 11a, the 11b that are parallel to each other, 11c, 11d...... respectively.Described inductive layer 13 comprises a plurality of induction electrodes 131, each induction electrode 131 is brilliant, described a plurality of induction electrode 131 is regularly arranged on described insulating medium layer 12 surfaces, and is electrically connected by many line of induction 13a, the 13b that are parallel to each other, 13c13d...... respectively.Described drive wire 11a, 11b, 11c, 11d...... and described line of induction 13a, 13b, 13c13d...... are orthogonal, and every line of induction is electrically connected with testing circuit by gating switch module 20.
Form mutual capacitance between induction electrode 131 and the drive electrode 111, testing circuit obtains the particular location that finger touches touch-screen by measuring the variation of the caused mutual capacitance of finger touches touch-screen.
Its principle of work is specially: be example with drive wire 11a, be applied with driving voltage 40 on the drive wire 11a, other drive wires 11b, 11c, 11d...... ground connection, line of induction 13a is connected with testing circuit 30 by gating switch 20, that detect this moment is drive wire 11a and line of induction 13a, finger touch is at the intersection point place of these two lines, have touching signals, successively line of induction 13b, 13c, 13d...... are connected with testing circuit 30 again by gating switch module 20 then, detect the signal at drive wire 11a and line of induction 13b, 13c, 13d...... intersection point place this moment; Afterwards, apply driving voltage successively for drive wire 11b, 11c, 11d......, drive drive wire 11b, 11c successively, 11d...... finishes the driving process, finishes the driving to all drive wire 11a, 11b, 11c, 11d...... and all line of induction 13a, 13b, 13c, 13d...... intersection point like this.
As shown in Figure 4, the equivalent electrical circuit of above-mentioned touch-screen comprises: induction stray capacitance 60, induction electrode resistance 55 and the testing circuit 56 of the mutual capacitance 53 between signal source 51, drive electrode resistance 52, drive electrode and the induction electrode, the driving stray capacitance 54 of drive electrode self, induction electrode self.Wherein, signal source 51 is used for applying the driving signal on drive electrode; Testing circuit 56 then is used for carrying out input.When finger touched touch-screen, some electric current flowed into finger, and equivalence is that the change of the mutual capacitance 53 between drive electrode and the induction electrode changes, and detects the variation that described mutual capacitance changes the weak current that causes from testing circuit 56.
The above is the touch screen structure of existing a kind of multi-layered electrode, namely drives layer and inductive layer and is positioned at different layers.
As shown in Figure 5, the structure inductive layer of the another kind of single-layer electrodes touch-screen of prior art and driving layer are positioned at same one deck, wherein, drive layer and comprise a plurality of drive electrodes 71, and being regularly arranged into a plurality of rows of drive electrodes 71a, 71b, 71c, 71d, 71e and a plurality of drive electrode row, each rows of drive electrodes couples together by the drive wire of periphery; Inductive layer comprises a plurality of induction electrodes 72, and induction electrode 72 is spaced with each drive electrode row, each drive electrode 71 and adjacent induction electrode 72 form mutual capacitance, and the principle of work of the touch-screen of single-layer electrodes and equivalent electrical circuit are identical with double-deck touch-screen principle of work and equivalent electrical circuit.
In order to make the liquid crystal indicator that has touch function more frivolous, field of liquid crystal display has developed embedded touch screen technology, as shown in Figure 6, utilize embedded touch screen technology to have liquid crystal indicator under the IPS pattern of touch function, comprise successively: TFT (Thine Film Transistor, thin film transistor (TFT)) array base palte, liquid crystal layer 65 and CF (Color Filter, colored filter) substrate, wherein tft array substrate comprises from the bottom to top successively: lower glass substrate 61, tft array layer 62, public electrode 63 and pixel electrode 64.Pixel electrode 64 is positioned at and only is a kind of optional embodiment on the public electrode 63 among the figure, and in addition, public electrode can be positioned on the pixel electrode, and perhaps public electrode can be positioned at same one deck with pixel electrode; The CF substrate comprises from the bottom to top successively: insulating medium layer 66 (or adopting colored filter as medium), touch electrode 67 and upper substrate glass 68.
Wherein, touch electrode 66 can be multilayer touch electrode or single-layer touch electrode, and spacing is several microns between described touch electrode 66 and the common electrode layer 64, because spacing is less, can form bigger stray capacitance between touch electrode 66 and the common electrode layer 64.
The above-mentioned equivalent circuit diagram that utilizes the liquid crystal indicator under the IPS pattern that embedded touch screen technology has touch function, as shown in Figure 7, the AC signal that signal source 51 is sent, described AC signal is through drive electrode resistance 52, mutual capacitance 53 and induction electrode resistance 55 enter testing circuit 56, but when driving stray capacitance 54 and induction stray capacitance 60 are big, for the AC signal that signal source 51 is sent, the capacitive reactance that drives stray capacitance 54 and induction stray capacitance 60 is less, public electrode resistance 57 and public electrode inductance 58 then hinder AC signal inflow place end, therefore AC signal is successively by the less driving stray capacitance 54 of capacitive reactance, induction stray capacitance 60, form current path 58, AC signal can form bigger basal signal at testing circuit 56 places by behind the described current path 58.Because it is less usually that mutual capacitance changes corresponding signal, is submerged in easily in the bigger basal signal, make testing circuit 56 be difficult to detection place mutual capacitance and change corresponding signal, cause and detect failure.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of capacitance touch display panels, change corresponding signal and be submerged in the big basal signal to solve existing capacitance touch display panels mutual capacitance, cause the problem that detects failure.
This capacitance touch display panels adopts the IPS/FFS type of drive, comprising:
Touch substrate, and the array base palte that is oppositely arranged of described touch substrate, be arranged at the liquid crystal layer between described touch substrate and the described array base palte, described capacitance touch display panels comprises:
Be arranged at described touch substrate towards drive electrode and the induction electrode of a side of liquid crystal layer;
Be arranged at described array base palte towards the driving public electrode that is separated from each other of a side of liquid crystal layer and induction public electrode, described driving public electrode and described drive electrode are oppositely arranged, described induction public electrode and induction electrode are oppositely arranged, and described driving public electrode and induction public electrode are connected to the common electric voltage output terminal.
Preferably, described drive electrode and induction electrode specifically are set to:
Described drive electrode and induction electrode are arranged on same one deck, a plurality of drive electrodes form rows of drive electrodes and drive electrode row, described induction electrode comprises a plurality of strip shaped electric poles, is provided with the drive electrode row between per two strip shaped electric poles, is provided with strip shaped electric poles between per two drive electrodes row.
Preferably, the drive electrode in the same rows of drive electrodes is electrically connected by peripheral leads.
Preferably, described drive electrode is rectangle.
Preferably, described display panel also comprises:
Be arranged on thin film transistor (TFT), gate line, data line and pixel electrode on the described array base palte, described thin film transistor (TFT) comprises grid, source electrode and drain electrode, described drain electrode and pixel electrode are electrically connected, and described grid and gate line are electrically connected, and described source electrode and data line are electrically connected.
Preferably, described display panel specifically is set to:
Described pixel electrode is arranged on the described array base palte;
Also be coated with insulation course on the described pixel electrode surface;
Described driving public electrode and induction public electrode are arranged on the described surface of insulating layer.
Preferably, in a pixel region, described driving public electrode and induction public electrode are strip shaped electric poles, and the slit between the described strip shaped electric poles is the passage of electric field between described driving public electrode and induction public electrode and pixel electrode.
Preferably, described display panel specifically is set to:
Described driving public electrode and induction public electrode are arranged on the described array base palte;
Also be coated with insulation course on described driving public electrode and the induction public electrode surface;
Described pixel electrode is arranged on the described surface of insulating layer.
Preferably, described pixel electrode is strip shaped electric poles.
Preferably, described display panel specifically is set to:
Described driving public electrode and induction public electrode are arranged on the described array base palte;
Described pixel electrode and described driving public electrode and induction public electrode are arranged on same one deck.
Preferably, described driving public electrode, induction public electrode and pixel electrode are the broach shape, and in a pixel region, the mutual interlock of broach of the mutual interlock of broach of broach shape pixel electrode and driving public electrode or broach shape pixel electrode and induction public electrode.
Preferably, described display panel also comprises:
Be arranged on the color filter film that touches on the substrate.
Preferably, described display panel also comprises:
Drive connecting line and induction connecting line, described driving connecting line will drive public electrode and be connected to described common electric voltage output terminal, and described induction connecting line is connected to described common electric voltage output terminal with described induction public electrode.
A kind of liquid crystal indicator, described liquid crystal indicator comprises above-mentioned display panel.
Preferably, described liquid crystal indicator also comprises:
Flexible printed circuit board, described flexible printed circuit board specifically comprises:
Common electric voltage generation module, described common electric voltage generation module produces common electric voltage, and is provided with the common electric voltage output terminal;
First connecting line, described first connecting line connect the common electric voltage output terminal and drive connecting line;
Second connecting line, described second connecting line connect common electric voltage output terminal and induction connecting line.
Preferably, described flexible printed circuit board also comprises:
The touch electrode module, described touch electrode module is to touching substrate output drive signal and detection signal.
Preferably, described common electric voltage generation module and touch electrode module are integrated in the same chip.
Preferably, described chip also comprises:
First voltage output end and second voltage output end, described first voltage output end and second voltage output end are connected the common electric voltage output terminal of described common electric voltage generation module respectively, wherein, first voltage output end is connected in first connecting line, and second voltage output end is connected in second connecting line.
Preferably, described common electric voltage output terminal is earth terminal.
Preferably, described common electric voltage output terminal is an interchange common electric voltage output terminal.
Preferably, described common electric voltage output terminal is a direct current common electric voltage output terminal.
Capacitance touch display panels of the present invention adopts the IPS/FFS type of drive, be arranged at described capacitance touch liquid crystal display panel array substrate towards the driving public electrode that is separated from each other of a side of liquid crystal layer and induction public electrode, described driving public electrode and described drive electrode are oppositely arranged, described induction public electrode and induction electrode are oppositely arranged, described driving public electrode and induction public electrode are connected to the common electric voltage output terminal, namely drive public electrode and respond to public electrode separate, and described driving public electrode and drive electrode form and drive stray capacitance, described induction public electrode and induction electrode form the induction stray capacitance, the resistance and the inductance that drive between public electrode and the induction public electrode have been increased greatly, greatly reduce signal source the driving stray capacitance of sending of passing through series connection and the AC signal of responding to stray capacitance arrival testing circuit, thereby can not form bigger basal signal at the testing circuit place, and then can avoid detecting the problem of failure.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the cross-sectional view of prior art capacitive touch screen;
Fig. 2 is the structural representation that the prior art capacitive touch screen drives layer;
Fig. 3 is the structural representation of prior art capacitive touch screen inductive layer;
Fig. 4 is prior art capacitive touch screen schematic equivalent circuit;
Fig. 5 is the structural representation of existing a kind of single-layer electrodes touch-screen;
Fig. 6 utilizes embedded touch screen technology to have liquid crystal indicator synoptic diagram under the IPS pattern of touch function;
Fig. 7 utilizes embedded touch screen technology to have the equivalent circuit diagram of the liquid crystal indicator under the IPS pattern of touch function;
Fig. 8 is the structural representation of capacitance touch display panels of the present invention;
Fig. 9 is capacitance touch display panels equivalent circuit diagram of the present invention;
Figure 10 is liquid crystal indicator structural representation of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Just as stated in the Background Art, existing capacitance touch display panels mutual capacitance changes corresponding signal and is submerged in the big basal signal, causes and detects failure.
The inventor finds after deliberation, can form bigger stray capacitance between touch electrode and the common electrode layer, except the less reason of the spacing of touch electrode and common electrode layer, the mode of connection of common electrode layer also can influence the stray capacitance between touch electrode and the common electrode layer.
The invention discloses a kind of capacitance touch display panel, this capacitance touch display panels adopts the IPS/FFS type of drive, comprising:
Touch substrate, and the array base palte that is oppositely arranged of described touch substrate, be arranged at the liquid crystal layer between described touch substrate and the described array base palte, described capacitance touch display panels comprises:
Be arranged at described touch substrate towards drive electrode and the induction electrode of a side of liquid crystal layer;
Be arranged at described array base palte towards the driving public electrode that is separated from each other of a side of liquid crystal layer and induction public electrode, described driving public electrode and described drive electrode are oppositely arranged, described induction public electrode and induction electrode are oppositely arranged, and described driving public electrode and induction public electrode are connected to the common electric voltage output terminal.
By such scheme as can be seen, drive public electrode and respond to public electrode separate, and described driving public electrode and drive electrode form and drive stray capacitance, described induction public electrode and induction electrode form the induction stray capacitance, the resistance and the inductance that drive between public electrode and the induction public electrode have been increased greatly, greatly reduce signal source the driving stray capacitance of sending of passing through series connection and the AC signal of responding to stray capacitance arrival testing circuit, thereby can not form bigger basal signal at the testing circuit place, and then can avoid detecting the problem of failure.
It more than is the application's core concept, below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
A lot of details have been set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization under the situation of intension of the present invention, so the present invention is not subjected to the restriction of following public specific embodiment.
Embodiment one:
Present embodiment discloses a kind of capacitance touch display panels, this touch LCD display panel adopts the IPS/FFS type of drive, comprise and touch substrate, and the array base palte that is oppositely arranged of described touch substrate, be arranged at the liquid crystal layer between described touch substrate and the described array base palte, it is characterized in that described capacitance touch display panels also comprises:
Be arranged at described touch substrate towards drive electrode and the induction electrode of a side of liquid crystal layer;
Be arranged at described array base palte towards the driving public electrode that is separated from each other of a side of liquid crystal layer and induction public electrode, described driving public electrode and described drive electrode are oppositely arranged, described induction public electrode and induction electrode are oppositely arranged, and described driving public electrode and induction public electrode are connected to the common electric voltage output terminal.
As shown in Figure 8, drive electrode 101 and the induction electrode 102 of described capacitance touch display panels are arranged on same one deck, make material and are preferably tin indium oxide or indium zinc oxide.Described drive electrode 101 is rectangle, and a plurality of drive electrodes form rows of drive electrodes 101H and drive electrode row 101L, described induction electrode 102 comprises a plurality of strip shaped electric poles, be provided with drive electrode row 101L between per two strip shaped electric poles, be provided with strip shaped electric poles between per two drive electrode row 101L, the drive electrode 101 in the described rows of drive electrodes 101H is electrically connected by peripheral leads 103.
Be arranged at described array base palte towards the driving public electrode that is separated from each other 202 and the induction public electrode 203 of a side of liquid crystal layer 306, described driving public electrode 202 is oppositely arranged with described drive electrode 101, described induction public electrode 203 is oppositely arranged with induction electrode 102, be specially, described driving public electrode 202 is right against drive electrode row 101L and arranges, the induction electrode 102 that described induction public electrode 203 is right against strip arranges, and described driving public electrode 202 is connected to common electric voltage output terminal Vs with induction public electrode 203.
The array base palte of described display panel specifically comprises:
Be arranged on thin film transistor (TFT), gate line, data line on the described infrabasal plate 301 (being generally glass substrate), described thin film transistor (TFT) comprises grid, source electrode and drain electrode, described grid and gate line are electrically connected, described source electrode and data line are electrically connected, and described thin film transistor (TFT), gate line, data line are referred to as tft layer 302.
Described driving public electrode 202 and induction public electrode 203 are arranged on described insulation course 305 surfaces, in a pixel region, described driving public electrode 202 and induction public electrode 203 are the strip public electrode, and the slit between the described strip public electrode is the passage of described driving public electrode 202 and induction public electrode 203 and 304 electric fields of pixel electrode.
In addition, described display panel specifically arrange can also for:
Described driving public electrode and induction public electrode are arranged on the described passivation layer 303;
Also be coated with insulation course on described driving public electrode and the induction public electrode surface;
Described pixel electrode is arranged on the described surface of insulating layer.
In addition, described display panel specifically arrange can also for:
Described driving public electrode and induction public electrode are arranged on the described passivation layer 303;
Described pixel electrode and described driving public electrode and induction public electrode are arranged on same one deck.
At this moment, described driving public electrode, induction public electrode and pixel electrode are the broach shape, and in a pixel region, the mutual interlock of broach of the mutual interlock of broach of broach shape pixel electrode and driving public electrode or broach shape pixel electrode and induction public electrode.
The touch substrate of described display panel specifically comprises:
Be arranged on the color filter film 307 that touches on the substrate, described color filter film 307 specifically is arranged on drive electrode 101 and induction electrode 102 surfaces, described drive electrode 101 and induction electrode 102 are arranged on the upper substrate 308 (being generally glass substrate), and described drive electrode 101 forms by separating through etching with one deck electrode with induction electrode 102.
Drive connecting line D and induction connecting line S, described driving connecting line D will drive public electrode 202 and be connected to described common electric voltage output terminal Vs, and described induction connecting line S is connected to described common electric voltage output terminal Vs with described induction public electrode 203.
Equivalent circuit diagram in conjunction with described display panel, as shown in Figure 9, common electric voltage output terminal Vs holds with being, drive public electrode 202 and respond to public electrode 203 and be connected to common electric voltage output terminal Vs, drive public electrode 202 and form driving stray capacitance C1 with drive electrode 101, induction public electrode 203 forms induction stray capacitance C2 with induction electrode 102, so drive stray capacitance C1 successively with drive public electrode resistance R 1, drive 1 series connection of public electrode inductance L, link to each other with common electric voltage output terminal Vs then, similarly, induction stray capacitance C2 successively with induction public electrode resistance R 2,2 series connection of induction public electrode inductance L link to each other with common electric voltage output terminal Vs then.
When mutual capacitance C is driven detection, the AC signal that signal source 71 is sent is through after the drive electrode resistance R 1, most of AC signal is by mutual capacitance C, induction electrode resistance R 2 arrives testing circuit 72, the small part AC signal is successively by driving stray capacitance C1, drive public electrode resistance R 3, drive public electrode inductance L 1 and import common electric voltage output terminal Vs, perhaps, the small part AC signal is successively by induction stray capacitance C2, induction public electrode resistance R 4, induction public electrode inductance L 2 imports common electric voltage output terminal Vs, described common electric voltage output terminal Vs ground connection.So arrange, the public electrode resistance and the inductance that drive between public electrode 202 and the induction public electrode 203 have increased greatly, and then make the resistance in series and the inductance that drive between stray capacitance C1 and the induction stray capacitance C2 (comprise and drive public electrode resistance R 3, drive public electrode inductance L 1, induction public electrode resistance R 4, induction public electrode inductance L 2) increased greatly, the AC signal that the driving stray capacitance C1 that passes through series connection that signal source 71 is sent and induction stray capacitance C2 arrive testing circuit 72 reduces greatly, 72 places bigger basal signal can not occur yet at testing circuit, testing circuit 72 detects mainly is AC signal by mutual capacitance C, thereby can survey the variation that mutual capacitance C changes caused AC signal more accurately, and then avoid existing capacitance touch display panels to change the problem that corresponding signal is submerged in the detection failure that causes in the big basal signal because of mutual capacitance.
Embodiment two:
Present embodiment discloses a kind of liquid crystal indicator, and described liquid crystal indicator comprises the described display panel of above-described embodiment.
As shown in figure 10, described liquid crystal indicator also comprises: common electric voltage generation module 401, first connecting line 402, second connecting line 403.
Wherein, described common electric voltage generation module 401 produces common electric voltage, and be provided with common electric voltage output terminal Vs in the described common electric voltage generation module 401, described first connecting line 402 connects common electric voltage output terminal Vs and drives connecting line D, described second connecting line 403 connects common electric voltage output terminal Vs and induction connecting line S, and described common electric voltage generation module 401, first connecting line 402, second connecting line 403 all are arranged in the flexible printed circuit board 400.
Described flexible printed circuit board 400 also comprises:
Also comprise in the described chip 400:
The first voltage output end Vs1 and the second voltage output end Vs2, the described first voltage output end Vs1 and the second voltage output end Vs2 are connected the common electric voltage output terminal Vs of described common electric voltage generation module 401 respectively, wherein, the first voltage output end Vs1 is connected in first connecting line, 402, the second voltage output end Vs2 and is connected in second connecting line 403.
Need to prove that described common electric voltage output terminal Vs is earth terminal, and described common electric voltage output terminal Vs is set to one as the case may be and exchanges common electric voltage output terminal or a direct current common electric voltage output terminal, do not do concrete restriction at this.
The described liquid crystal indicator of present embodiment includes embodiment one described display panel, and the driving connecting line that drives public electrode is connected to first voltage output end by first connecting line that arranges in the described liquid crystal indicator of present embodiment, and conducting is to common electric voltage output terminal, ground connection; The induction connecting line of induction public electrode is connected to second voltage output end by second connecting line that arranges in the described liquid crystal indicator of present embodiment, and conducting is to common electric voltage output terminal, ground connection.
As seen, the described driving public electrode of present embodiment and induction public electrode insert the common electric voltage output terminal through circuit independently respectively, ground connection, the resistance and the inductance that drive between public electrode and the induction public electrode have been increased, signal source the driving stray capacitance of sending of passing through series connection and the AC signal of responding to stray capacitance arrival testing circuit have been reduced, improved and touched the sensitivity that detects, avoided existing capacitance touch display panels to change the problem that corresponding signal is submerged in the detection failure that causes in the big basal signal because of mutual capacitance.
Various piece adopts the mode of going forward one by one to describe in this instructions, and what each part stressed is and the difference of other parts that identical similar part is mutually referring to getting final product between the various piece.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments herein.Therefore, the present invention will can not be restricted to embodiment illustrated herein, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (21)
1. capacitance touch display panels, this touch LCD display panel adopts the IPS/FFS type of drive, comprise and touch substrate, and the array base palte that is oppositely arranged of described touch substrate, be arranged at the liquid crystal layer between described touch substrate and the described array base palte, it is characterized in that described capacitance touch display panels comprises:
Be arranged at described touch substrate towards drive electrode and the induction electrode of a side of liquid crystal layer;
Be arranged at described array base palte towards the driving public electrode that is separated from each other of a side of liquid crystal layer and induction public electrode, described driving public electrode and described drive electrode are oppositely arranged, described induction public electrode and induction electrode are oppositely arranged, and described driving public electrode and induction public electrode are connected to the common electric voltage output terminal.
2. according to the described display panel of claim 1, it is characterized in that described drive electrode and induction electrode specifically are set to:
Described drive electrode and induction electrode are arranged on same one deck, a plurality of drive electrodes form rows of drive electrodes and drive electrode row, described induction electrode comprises a plurality of strip shaped electric poles, is provided with the drive electrode row between per two strip shaped electric poles, is provided with strip shaped electric poles between per two drive electrodes row.
3. according to the described display panel of claim 2, it is characterized in that the drive electrode in the same rows of drive electrodes is electrically connected by peripheral leads.
4. according to the described display panel of claim 3, it is characterized in that described drive electrode is rectangle.
5. according to the described display panel of claim 4, it is characterized in that described display panel also comprises:
Be arranged on thin film transistor (TFT), gate line, data line and pixel electrode on the described array base palte, described thin film transistor (TFT) comprises grid, source electrode and drain electrode, described drain electrode and pixel electrode are electrically connected, and described grid and gate line are electrically connected, and described source electrode and data line are electrically connected.
6. according to the described display panel of claim 5, it is characterized in that described display panel specifically is set to:
Described pixel electrode is arranged on the described array base palte;
Also be coated with insulation course on the described pixel electrode surface;
Described driving public electrode and induction public electrode are arranged on the described surface of insulating layer.
7. according to the described display panel of claim 6, it is characterized in that, in a pixel region, described driving public electrode and induction public electrode are strip shaped electric poles, and the slit between the described strip shaped electric poles is the passage of electric field between described driving public electrode and induction public electrode and pixel electrode.
8. according to the described display panel of claim 5, it is characterized in that described display panel specifically is set to:
Described driving public electrode and induction public electrode are arranged on the described array base palte;
Also be coated with insulation course on described driving public electrode and the induction public electrode surface;
Described pixel electrode is arranged on the described surface of insulating layer.
9. described display panel according to Claim 8 is characterized in that described pixel electrode is strip shaped electric poles.
10. according to the described display panel of claim 5, it is characterized in that described display panel specifically is set to:
Described driving public electrode and induction public electrode are arranged on the described array base palte;
Described pixel electrode and described driving public electrode and induction public electrode are arranged on same one deck.
11. according to the described display panel of claim 10, it is characterized in that, described driving public electrode, induction public electrode and pixel electrode are the broach shape, and in a pixel region, the mutual interlock of broach of the mutual interlock of broach of broach shape pixel electrode and driving public electrode or broach shape pixel electrode and induction public electrode.
12., it is characterized in that described display panel also comprises according to the described display panel of claim 11:
Be arranged on the color filter film that touches on the substrate.
13., it is characterized in that described display panel also comprises according to the described display panel of claim 12:
Drive connecting line and induction connecting line, described driving connecting line will drive public electrode and be connected to described common electric voltage output terminal, and described induction connecting line is connected to described common electric voltage output terminal with described induction public electrode.
14. a liquid crystal indicator is characterized in that, described liquid crystal indicator comprises the described display panel of aforesaid right requirement.
15., it is characterized in that described liquid crystal indicator also comprises according to the described liquid crystal indicator of claim 14:
Flexible printed circuit board, described flexible printed circuit board specifically comprises:
Common electric voltage generation module, described common electric voltage generation module produces common electric voltage, and is provided with the common electric voltage output terminal;
First connecting line, described first connecting line connect the common electric voltage output terminal and drive connecting line;
Second connecting line, described second connecting line connect common electric voltage output terminal and induction connecting line.
16., it is characterized in that described flexible printed circuit board also comprises according to the described liquid crystal indicator of claim 15:
The touch electrode module, described touch electrode module is to touching substrate output drive signal and detection signal.
17., it is characterized in that described common electric voltage generation module and touch electrode module are integrated in the same chip according to the described liquid crystal indicator of claim 16.
18., it is characterized in that described chip also comprises according to the described liquid crystal indicator of claim 17:
First voltage output end and second voltage output end, described first voltage output end and second voltage output end are connected the common electric voltage output terminal of described common electric voltage generation module respectively, wherein, first voltage output end is connected in first connecting line, and second voltage output end is connected in second connecting line.
19., it is characterized in that described common electric voltage output terminal is earth terminal according to the described liquid crystal indicator of claim 18.
20., it is characterized in that described common electric voltage output terminal is an interchange common electric voltage output terminal according to the described liquid crystal indicator of claim 19.
21., it is characterized in that described common electric voltage output terminal is a direct current common electric voltage output terminal according to the described liquid crystal indicator of claim 19.
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| CN201110446669.XA CN103186297B (en) | 2011-12-27 | 2011-12-27 | Capacitive touch liquid crystal display panel and liquid crystal display device |
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| CN201110446669.XA CN103186297B (en) | 2011-12-27 | 2011-12-27 | Capacitive touch liquid crystal display panel and liquid crystal display device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103186299A (en) * | 2011-12-30 | 2013-07-03 | 上海天马微电子有限公司 | Embedded touch display device |
| CN104656297A (en) * | 2013-11-19 | 2015-05-27 | 苏州汉朗光电有限公司 | Touch smectic-phase liquid crystal display |
| CN105278778A (en) * | 2014-06-30 | 2016-01-27 | 乐金显示有限公司 | Display device integrated with touch screen |
| CN106510107A (en) * | 2016-11-29 | 2017-03-22 | 成都聚智工业设计有限公司 | Wearable bracelet with liquid crystal display screen |
| US10261622B2 (en) | 2016-10-10 | 2019-04-16 | Microsoft Technology Licensing, Llc | Ground reference floating in a touch-sensitive display |
| CN111739425A (en) * | 2020-06-30 | 2020-10-02 | 昆山国显光电有限公司 | Display panel and display device |
| CN112955755A (en) * | 2018-09-14 | 2021-06-11 | Koa株式会社 | Current detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080074401A1 (en) * | 2006-09-26 | 2008-03-27 | Lg. Philips Lcd Co. Ltd. | Display with infrared backlight source and multi-touch sensing function |
| CN102109690A (en) * | 2009-12-25 | 2011-06-29 | 上海天马微电子有限公司 | Liquid crystal display device with embedded touch screen and control method |
| CN102213852A (en) * | 2010-04-09 | 2011-10-12 | 上海天马微电子有限公司 | Touch display device and method of manufacturing the same |
| CN102221755A (en) * | 2010-04-14 | 2011-10-19 | 上海天马微电子有限公司 | Embedded touch screen and forming method thereof |
-
2011
- 2011-12-27 CN CN201110446669.XA patent/CN103186297B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080074401A1 (en) * | 2006-09-26 | 2008-03-27 | Lg. Philips Lcd Co. Ltd. | Display with infrared backlight source and multi-touch sensing function |
| CN102109690A (en) * | 2009-12-25 | 2011-06-29 | 上海天马微电子有限公司 | Liquid crystal display device with embedded touch screen and control method |
| CN102213852A (en) * | 2010-04-09 | 2011-10-12 | 上海天马微电子有限公司 | Touch display device and method of manufacturing the same |
| CN102221755A (en) * | 2010-04-14 | 2011-10-19 | 上海天马微电子有限公司 | Embedded touch screen and forming method thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103186299A (en) * | 2011-12-30 | 2013-07-03 | 上海天马微电子有限公司 | Embedded touch display device |
| CN103186299B (en) * | 2011-12-30 | 2016-09-07 | 上海天马微电子有限公司 | Embedded touch display device |
| CN104656297A (en) * | 2013-11-19 | 2015-05-27 | 苏州汉朗光电有限公司 | Touch smectic-phase liquid crystal display |
| CN104656297B (en) * | 2013-11-19 | 2017-06-13 | 苏州汉朗光电有限公司 | Touch controlled type smectic liquid crystal display |
| CN105278778A (en) * | 2014-06-30 | 2016-01-27 | 乐金显示有限公司 | Display device integrated with touch screen |
| CN105278778B (en) * | 2014-06-30 | 2018-02-02 | 乐金显示有限公司 | It is integrated with the display device of touch-screen |
| US10261622B2 (en) | 2016-10-10 | 2019-04-16 | Microsoft Technology Licensing, Llc | Ground reference floating in a touch-sensitive display |
| CN106510107A (en) * | 2016-11-29 | 2017-03-22 | 成都聚智工业设计有限公司 | Wearable bracelet with liquid crystal display screen |
| CN112955755A (en) * | 2018-09-14 | 2021-06-11 | Koa株式会社 | Current detection device |
| CN112955755B (en) * | 2018-09-14 | 2024-02-20 | Koa株式会社 | Current detection device |
| CN111739425A (en) * | 2020-06-30 | 2020-10-02 | 昆山国显光电有限公司 | Display panel and display device |
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| Publication number | Publication date |
|---|---|
| CN103186297B (en) | 2016-03-16 |
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