CN203882289U - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN203882289U CN203882289U CN201420256244.1U CN201420256244U CN203882289U CN 203882289 U CN203882289 U CN 203882289U CN 201420256244 U CN201420256244 U CN 201420256244U CN 203882289 U CN203882289 U CN 203882289U
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Abstract
The utility model provides a touch display panel and a touch display device. The touch display panel comprises an array substrate and a color film substrate. A common electrode layer is formed on a transparent substrate of the array substrate. A touch sensing electrode is formed on one surface, facing the array substrate, of a transparent substrate of the color film substrate. The common electrode layer serves as first common electrodes in a displaying phase. At least part of the common electrode layer serves as touch drive electrodes in a touch control phase. The part, serving as the touch drive electrodes, of the common electrode layer intersects with the touch sensing electrodes. The manufacturing process of the touch display panel is simple, production cost of the prior touch screen can be effectively reduced, and production efficiency is improved.
Description
Technical field
The utility model relates to display technique, relates in particular to a kind of touch-control display panel and touch control display apparatus.
Background technology
Digitizer has become people's life, has produced indispensable important element.Display device, as digital device video signal output terminal, for being directly passed to operator message, belongs to requisite device.Along with scientific and technical development, the function of display device is not limited only to receiving video signals and shows, but has control command input function, namely existing touch control display apparatus, by the direct input command of screen, even can replace the auxiliary device for inputting such as keyboard.
At present, the embedded touch-screen of existing condenser type is at existing Thin Film Transistor (TFT) (Thin Film Transistor, what abbreviation TFT) on array base palte, direct increase touch-control sweep trace in addition and touch induction lines realized, on the surface of tft array substrate, make crossing strip indium tin oxide (the Indium Tin Oxide of two-layer mutual antarafacial, be called for short ITO) electrode, this two-layer (ITO) electrode as touch-control drive wire and the touch induction lines of touch-screen, forms inductance capacitance in the antarafacial intersection of two ITO electrodes respectively.Its course of work is: when the ITO electrode to as touch-control drive wire loads touch-control driving signal, detect the voltage signal that touch induction lines is coupled out by inductance capacitance, in this process, while having human body contact touch-screen, people's bulk electric field will act on inductance capacitance, and the capacitance of inductance capacitance is changed, and then changes the voltage signal that touch induction lines is coupled out, according to the variation of voltage signal, just can determine contact position.
The structural design of the embedded touch-screen of above-mentioned condenser type need to increase new rete on existing tft array substrate, and causing need to increase new technique when making tft array substrate, and production cost is increased, and is unfavorable for enhancing productivity.
Utility model content
The utility model provides a kind of touch-control display panel and touch control display apparatus, for simplifying the production technology of prior art touch-control display panel, enhances productivity.
First aspect, the invention provides a kind of touch-control display panel, comprising: array base palte and color membrane substrates; On the transparency carrier of described array base palte, be formed with common electrode layer; The transparency carrier of described color membrane substrates is formed with touch-control sensing electrode towards the one side of described array base palte;
Described common electrode layer in the demonstration stage as the first public electrode, at least a portion of common electrode layer described in the touch-control stage as touch-control drive electrode;
The part of the described common electrode layer as touch-control drive electrode is arranged in a crossed manner with described touch-control sensing electrode.
Alternatively, the part of the described common electrode layer as touch-control drive electrode is vertical with described touch-control sensing electrode.
Alternatively, the strip shaped electric poles that the part of the described common electrode layer as touch-control drive electrode is partitioned arrangement.
Alternatively, described touch-control display panel also comprises: be positioned on described array base palte and be positioned at the second public electrode of pixel electrode periphery;
Covering gate polar curve and/or source electrode line that described the second public electrode is at least part of.
Alternatively, described the first public electrode is identical with the voltage of described the second public electrode.
Alternatively, described the first public electrode is connected by operational amplifier with described the second public electrode, so that described the first public electrode is with described the second public electrode physical isolation and voltage is identical.
Alternatively, described the second public electrode is made by tin indium oxide.
Second aspect, the utility model provides a kind of touch control display apparatus, and described touch control display apparatus comprises above-mentioned arbitrary described touch-control display panel.
As shown from the above technical solution, touch-control display panel of the present utility model and touch control display apparatus, by form common electrode layer on the lens substrate of array base palte, the transparency carrier of color membrane substrates forms touch-control sensing electrode towards the one side of described array base palte, common electrode layer in the demonstration stage as the first public electrode, in at least a portion of touch-control stage common electrode layer as touch-control drive electrode, can avoid need to arranging separately the technique of touch-control drive electrode as the touch-control display panel of prior art, and then can reduce the production cost of touch-screen in prior art, improve the production efficiency of touch-control display panel simultaneously.
Accompanying drawing explanation
The structural representation of the touch-control display panel that Fig. 1 provides for the utility model one embodiment;
Fig. 2 is the distribution schematic diagram of touch-control sensing electrode and common electrode layer in Fig. 1;
The schematic diagram of the second public electrode position relationship that Fig. 3 provides for the utility model one embodiment;
The schematic diagram that the first public electrode that Fig. 4 provides for the utility model one embodiment is connected with the second public electrode.
Figure elements explanation:
Black matrix 101 common electrode layer of transparency carrier 102 of 100 array base paltes
The transparency carrier 104 touch-control drive electrode 105 touch-control sensing electrodes of 103 color membrane substrates
106 liquid crystal layer 107 oriented layer 108 diaphragms
109 polaroid 110 second public electrodes
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
The structural representation of the touch-control display panel that Fig. 1 provides for the utility model one embodiment, as shown in Figure 1, the touch-control display panel in the present embodiment comprises: array base palte and color membrane substrates;
Wherein, on the transparency carrier 100 of described array base palte, form common electrode layer 101; The transparency carrier 103 of described color membrane substrates forms touch-control sensing electrode (Rx) 105 towards the one side of described array base palte; Described common electrode layer 101 in the demonstration stage as the first public electrode, be that the driven IC of its current potential is set to common level, in at least a portion of common electrode layer 101 described in the touch-control stage, as touch-control drive electrode (Tx) 104, the driven IC of this part is set to high-impedance state;
The part of the described common electrode layer 101 as touch-control drive electrode is arranged in a crossed manner with described touch-control sensing electrode 105.Preferably, for improving the touch-control effect of touch-control display panel, as shown in Figure 2, touch-control sensing electrode 105 can be vertical with the common electrode layer 101 as touch-control drive electrode 104.
Preferably, touch-control sensing electrode 105 can be the ITO electrode of list structure, and the aforementioned common electrode layer as touch-control drive electrode 104 also can be the strip shaped electric poles of a plurality of partitioned arrangement, as shown in Figure 2.
In the present embodiment, the transparency carrier of array base palte can be the substrate of array glass or other transparent materials, and the present embodiment does not limit it; The lens substrate of color membrane substrates can be the substrate of color film glass or other transparent materials, and the present embodiment does not limit it.
Alternatively, touch-control display panel in the present embodiment increases ITO electrode as touch-control sensing electrode 105 at the transparency carrier of color membrane substrates towards the one side of array base palte, for example can reduce like this distance between finger and touch-control sensing electrode (Rx), and then can effectively improve the touch-control variable quantity in touch-control display panel, promote touch-control effect.
Color membrane substrates also comprises black matrix 102 and colored filter (not marking in figure), and black matrix, for interval colored filter, can improve color contrast, reduce light leak.Red, green, blue three color colo(u)r filters setting corresponding to pixel electrode in array base palte in color membrane substrates, for example, black matrix can be corresponding with the position of the gate line arranging in array base palte, source electrode line.Between color membrane substrates and array base palte, be provided with liquid crystal layer 106.In addition, the polaroid 109 that carries diaphragm 108 in touch-control display panel is also shown in Fig. 1, this polaroid 109 can make polarisation of light direction change, to complete crystal display.
In the present embodiment, oriented layer 107, the position with the polaroid 109 of diaphragm 108 in touch-control display panel that black matrix 102, colored filter, centre are provided with liquid crystal layer 106 belong to prior art.The present embodiment is no longer described in detail.
Touch-control display panel in the present embodiment, by form common electrode layer on the transparency carrier of array base palte, the transparency carrier of color membrane substrates forms touch-control sensing electrode towards the one side of array base palte, common electrode layer in the demonstration stage as the first public electrode, in the part of touch-control stage common electrode layer as touch-control drive electrode, can avoid need to arranging separately the technique of touch-control drive electrode as the touch-control display panel of prior art, and then can reduce the production cost of touch-control display panel, improve the production efficiency of touch-control display panel simultaneously.
Preferably, in concrete application process, in the touch-control stage, the common electrode layer in array base palte all can be multiplexed with to touch-control drive electrode, increase the crossing-over rate of touch-control sensing electrode and touch-control drive electrode, and then improve the touch-control variable quantity of touch-control display panel.
Because part is gate line and source electrode line in the touch-control stage below the common electrode layer of touch-control drive electrode, therefore, in the touch-control stage, gate line and source electrode line form larger electric capacity respectively and between common electrode layer, increased resistance capacitance (Resistance Capacitance the is called for short RC) load of touch-control drive electrode.For reducing the RC load of the touch-control drive electrode in touch-control stage, in the present embodiment, in touch-control display panel, also can increase and have the second public electrode 110, as shown in Figure 3.
Particularly, touch-control display panel also can comprise: be positioned on described array base palte and be positioned at the second public electrode of pixel electrode periphery, the covering gate polar curve that this second public electrode can be at least part of and/source electrode line.As shown in Figure 3, the second public electrode 110 can cover source electrode line with part by part covering gate polar curve.Certainly, between the second public electrode 110 and gate line and source electrode line, insulate, for example, have insulation course.
Alternatively, the second public electrode can be made by tin indium oxide (ITO).That is to say, the direction increase ITO electrode at pixel electrode periphery along gate line and source electrode line, and then these ITO electrodes are coupled together and form second public electrode 110.ITO electrode in the present embodiment can correspondence be positioned at black matrix below.
Owing to increasing and having the second public electrode in touch-control display panel, and the voltage of the second public electrode can be identical with the voltage of the first public electrode.For this reason, as shown in Figure 4, the second public electrode is connected by operational amplifier with the first public electrode, so that described the first public electrode with the second public electrode physical isolation and voltage is identical, can guarantee that the voltage of the second public electrode is identical with the voltage of the first public electrode thus.
In Fig. 4, the first public electrode concatenation operation amplifier (Operational amplifier, abbreviation OP) positive input, the second public electrode negative feedback is connected in the reverse input end of operational amplifier, the ITO electrode that the output of operational amplifier is connected to pixel electrode periphery is the second public electrode, and on second public electrode that can guarantee like this to cause when gate line (Gate Line) charges with source electrode line (Source Line), the variation of current potential is returned identical with the current potential of the first public electrode by negative-feedback circuit adjustment.Wherein the second public electrode negative feedback and the second public electrode are actually the diverse location on the second public electrode herein.
Will be understood that, by operational amplifier, connect the second public electrode and the first public electrode that is positioned at pixel electrode periphery, guarantee that the current potential of the second public electrode and the first public electrode cuts off the physical connection of the first public electrode and the second public electrode by the high resistant of operational amplifier when identical, and then reduce the RC load of touch-control drive electrode.
In the present embodiment, because touch-control display panel increase has the second public electrode equating with the voltage of the first public electrode, can reduce the RC load of touch-control drive electrode on the one hand, on the other hand, impact on public electrode in the time of can reducing gate line and source electrode line charging, thereby the display effect of lifting touch-control display panel.
On the other hand, the present invention also provides a kind of touch control display apparatus, and the touch control display apparatus of the present embodiment can comprise the touch-control display panel of describing in above-mentioned any embodiment.Touch control display apparatus is such as being: any product or parts with Presentation Function such as Electronic Paper, mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.
Touch control display apparatus in the present embodiment, can improve display effect and touch-control effect preferably, can simplify the preparation technology of touch control display apparatus simultaneously, can reduce production costs, and improves the production efficiency of touch control display apparatus.
Finally it should be noted that: each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit above; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the utility model claim limited range.
Claims (8)
1. a touch-control display panel, comprising: array base palte and color membrane substrates; It is characterized in that, on the transparency carrier of described array base palte, be formed with common electrode layer; The transparency carrier of described color membrane substrates is formed with touch-control sensing electrode towards the one side of described array base palte;
Described common electrode layer in the demonstration stage as the first public electrode, at least a portion of common electrode layer described in the touch-control stage as touch-control drive electrode;
The part of the described common electrode layer as touch-control drive electrode is arranged in a crossed manner with described touch-control sensing electrode.
2. touch-control display panel according to claim 1, is characterized in that, the part of the described common electrode layer as touch-control drive electrode is vertical with described touch-control sensing electrode.
3. touch-control display panel according to claim 1, is characterized in that, the strip shaped electric poles that the part of the described common electrode layer as touch-control drive electrode is partitioned arrangement.
4. touch-control display panel according to claim 1, is characterized in that, described touch-control display panel also comprises:
Be positioned on described array base palte and be positioned at the second public electrode of pixel electrode periphery;
Covering gate polar curve and/or source electrode line that described the second public electrode is at least part of.
5. touch-control display panel according to claim 4, is characterized in that, described the first public electrode is identical with the voltage of described the second public electrode.
6. touch-control display panel according to claim 4, is characterized in that, described the first public electrode is connected by operational amplifier with described the second public electrode, so that described the first public electrode is with described the second public electrode physical isolation and voltage is identical.
7. touch-control display panel according to claim 4, is characterized in that, described the second public electrode is made by tin indium oxide.
8. a touch control display apparatus, is characterized in that, comprises the touch-control display panel described in the claims 1-7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420256244.1U CN203882289U (en) | 2014-05-19 | 2014-05-19 | Touch display panel and touch display device |
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| CN201420256244.1U CN203882289U (en) | 2014-05-19 | 2014-05-19 | Touch display panel and touch display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536631A (en) * | 2015-01-26 | 2015-04-22 | 京东方科技集团股份有限公司 | Touch display substrate and touch display device |
| CN103995613B (en) * | 2014-05-19 | 2017-05-03 | 京东方科技集团股份有限公司 | Touch display panel, manufacturing method of touch display panel and touch display device |
| WO2018188451A1 (en) * | 2017-04-12 | 2018-10-18 | 京东方科技集团股份有限公司 | Touchscreen display panel, drive method therefor, and display apparatus |
| CN112732122A (en) * | 2021-01-20 | 2021-04-30 | 深圳市华星光电半导体显示技术有限公司 | Touch display panel and touch display device |
-
2014
- 2014-05-19 CN CN201420256244.1U patent/CN203882289U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995613B (en) * | 2014-05-19 | 2017-05-03 | 京东方科技集团股份有限公司 | Touch display panel, manufacturing method of touch display panel and touch display device |
| CN104536631A (en) * | 2015-01-26 | 2015-04-22 | 京东方科技集团股份有限公司 | Touch display substrate and touch display device |
| CN104536631B (en) * | 2015-01-26 | 2018-01-12 | 京东方科技集团股份有限公司 | Touch display substrate, touch control display apparatus |
| US10296117B2 (en) | 2015-01-26 | 2019-05-21 | Boe Technology Group Co., Ltd. | Touch control display substrate and touch control display device |
| WO2018188451A1 (en) * | 2017-04-12 | 2018-10-18 | 京东方科技集团股份有限公司 | Touchscreen display panel, drive method therefor, and display apparatus |
| US10809834B2 (en) | 2017-04-12 | 2020-10-20 | Boe Technology Group Co., Ltd. | Touch display panel, method of driving touch display panel, and display apparatus |
| CN112732122A (en) * | 2021-01-20 | 2021-04-30 | 深圳市华星光电半导体显示技术有限公司 | Touch display panel and touch display device |
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