CN205375419U - Touch display apparatus and electronic equipment - Google Patents

Abstract

The utility model provides a touch display apparatus and electronic equipment. Touch display apparatus includes the touch display panel, including a plurality of first electrodes, a plurality of first electrodes are the multiseriate array of multirow and arrange, and drive circuit, drive circuit is used for rightly a plurality of first electrodes carry out interlacing reading scan and interlacing touch scanning, realize that image display refreshes and the touch sensing.

Description

Touch display unit and electronic equipment

Technical field

This utility model relates to touching Display Technique field, particularly relates to a kind of touch display unit and has the electronic equipment of touch display unit.

Background technology

At present, touch screen is used on various electronic product gradually, becomes the important intermediary interface equipment that user is mutual with electronic product.So, existing electronic product usually additionally arranges a touch screen, is unfavorable for that electronic product develops towards lightening direction.

Utility model content

This utility model solves the technical problem that and is to provide a kind of more lightening touch display unit and electronic equipment.

Correspondingly, this utility model provides a kind of touch display unit, including:

Touch display panel, including multiple first electrodes, the plurality of first electrode is the array arrangement of multiple lines and multiple rows；With

Drive circuit, described drive circuit touches scanning for the plurality of first electrode carries out interlaced display scan with interlacing, it is achieved image display refreshes and touch-sensing.

Alternatively, described drive circuit is for performing self-capacitance touch-sensing to the plurality of first electrode.

Alternatively, described drive circuit provides gray scale voltage to perform image display refreshing to the plurality of first electrode, it is provided that touch-sensing drives signal to perform self-capacitance touch-sensing to the plurality of first electrode.

Alternatively, at least two row the first electrodes are once performed touch-sensing by described drive circuit simultaneously, and after described at least two row the first electrodes have been performed touch-sensing, described at least two row the first electrodes are performed image display and refreshes.

Alternatively, described drive circuit, when described at least two row the first electrodes performing image display and refreshing, scans a line the first electrode every time.

Alternatively, at least two row the first electrodes are performed touch-sensing by described drive circuit every time simultaneously.

Alternatively, described touch display panel farther includes:

Multi-strip scanning line；

A plurality of data lines, arranged in a crossed manner with the insulation of described multi-strip scanning line；With

Multiple control switchs, for being connected respectively with described multi-strip scanning line and a plurality of data lines, wherein, each control switch includes controlling electrode, the first transmission electrode and the second transmission electrode, wherein, controlling electrode to be connected with scanning line, the first transmission electrode is connected with data wire, and the second transmission electrode and the first electrode connect；

Described drive circuit is used for providing touch-sensing control signal to described multi-strip scanning line, activate the control switch being connected with scanning line, and provide touch-sensing to drive signal to described a plurality of data lines, it is transferred to the plurality of first electrode with the control switch passing through to activate, the plurality of first electrode is performed self-capacitance touch-sensing.

Alternatively, described drive circuit is further used for providing scanning signal to described multi-strip scanning line, activate the control switch being connected with scanning line, and provide gray scale voltage to described a plurality of data lines, it is transferred to the plurality of first electrode with the control switch passing through to activate, the plurality of first electrode is performed image display and refreshes.

Alternatively, described touch display panel farther includes the second electrode, and described drive circuit also provides for common electric voltage to described second electrode, shows to coordinate the first electrode to perform image；When the first electrode performs touch-sensing, the pressure reduction that described drive circuit is supplied between the common electric voltage of the second electrode and described touch-sensing driving signal remains unchanged.

Alternatively, described drive circuit includes display driver circuit, and described display driver circuit includes:

Scan drive circuit, is used for providing scanning signal to described multi-strip scanning line, activates the control switch being connected with scanning line；With

Data drive circuit, is used for providing gray scale voltage to described a plurality of data lines, is transferred to the plurality of first electrode with the control switch passing through to activate, the plurality of first electrode is performed image display and refreshes；

Described drive circuit farther includes:

Public voltage generating circuit, is used for providing common electric voltage to described second electrode；With

Control circuit, it is connected with described scan drive circuit and data drive circuit, for controlling the sequential of described scan drive circuit output scanning signal, also provide for video data to described data drive circuit, wherein, video data is done the conversion of progressive-to-interlace by described control circuit, and described data drive circuit receives described video data, and changes described video data into corresponding gray scale voltage.

Alternatively, the image of described touch display panel is shown that refreshing frequency is identical with touch-sensing frequency by described drive circuit.

This utility model also provides for a kind of electronic equipment, described electronic equipment include above-mentioned in arbitrarily described touch display unit.

Refreshing and touch-sensing owing to the first electrode of described touch display unit performs image display, therefore, described touch display unit becomes lightening.Correspondingly, the electronic equipment with described touch display unit is more lightening.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of this utility model electronic equipment one embodiment.

Fig. 2 is the schematic diagram of touch display unit one embodiment shown in Fig. 1.

Fig. 3 is the electrical block diagram of the another embodiment of this utility model touch display unit.

Fig. 4 is the structural representation of the another embodiment of touch display panel.

Fig. 5 is the part enlarged plan view of the second electrode and the first electrode shown in Fig. 4.

Fig. 6 is the cut-away section structural representation of the another embodiment of touch display panel shown in Fig. 4.

Fig. 7 is the part enlarged plan view of the second electrode and the first electrode shown in Fig. 6.

Fig. 8 is the structural representation after touch display panel shown in Fig. 4 assembles.

Fig. 9 is the structural representation of touch-sensing testing circuit shown in Fig. 3.

Figure 10 is the structural representation of an embodiment of the detection unit of touch-sensing shown in Fig. 9 and processing unit.

Figure 11 is the part circuit structure schematic diagram of touch display unit one embodiment.

Figure 12 is the part-structure schematic diagram of this utility model another embodiment of electronic equipment.

Detailed description of the invention

Understandable for enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent from, below in conjunction with accompanying drawing, specific embodiment of the utility model is described in detail.But, example embodiment can be implemented in a variety of forms, and is not understood as limited to embodiment set forth herein；On the contrary, it is provided that these embodiments make this utility model will fully and completely, and the design of example embodiment is conveyed to those skilled in the art all sidedly.In order to convenient or clear, it is possible to exaggerate, omit or be schematically illustrated in the thickness of every layer shown in accompanying drawing and size and schematically illustrate the quantity of related elements.It addition, the size of element not exclusively reflects actual size, and the quantity of related elements not exclusively reflects actual quantity.Because reasons such as accompanying drawing vary in size, the quantity of the same or similar or related elements shown in different drawings exists and inconsistent situation.Accompanying drawing labelling identical in the drawings represents same or similar structure.So, it should be noted that, so that label has regularity and logicality etc., in some different embodiment, same or similar element or structure have employed different accompanying drawing labellings, relatedness and related text according to technology illustrate, those skilled in the art can directly or indirectly judge to learn.

Additionally, described feature, structure can be combined in one or more embodiment in any suitable manner.In the following description, it is provided that many details are thus providing fully understanding embodiment of the present utility model.But, one of ordinary skill in the art would recognize that, it does not have one or more in described specific detail, or adopt other structure, constituent element etc., it is also possible to put into practice the technical solution of the utility model.In other cases, known features or operation are not shown in detail or describe to avoid fuzzy this utility model.

Further, following term is illustrative of, it is not intended that limit by any way.After reading the application, it would be recognized by those skilled in the art that, the statement of these terms is applicable to technology, method, physical component and system (no matter whether knowing at present), infers including those skilled in the art after reading the application or its extension educible.

In description of the present utility model, it is to be understood that: " multiple " include two and two or more, and " a plurality of " includes two and more than two, unless this utility model separately has clearly concrete restriction." at least two " include the multiple situations such as two, three, four, five, and " at least two " includes the multiple situations such as two, three, four, five.It addition, words such as " first ", " second " that occur in each element title and signal name is not limit element or sequencing that signal occurs, but for convenience of element name, clear distinguish each element so that describe more succinct.

Touch screen generally comprises the touch screen of the several types such as resistance-type, condenser type, infrared-type, and wherein, the application of capacitive touch screen is more extensive.Capacitive touch screen includes again mutual capacitance type touch screen and self-capacitance touch screen.

Based in the touch system of mutual capacitance, touch screen can include (such as) and drive district and sensing area, such as drives line and sense wire.In an example case, drive line can form multirow, and sense wire can form multiple row (such as, orthogonal).Touch pixel and may be disposed at the intersection of row and column.During operation, available alternate signal (AC) waveform encourages described row, and mutual capacitance can be formed between the row and column of this touch pixel.When an object is close to this touch pixel, some electric charges being coupled between the row and column of this touch pixel can change into and coupleding on this object.This minimizing of the electric charge being coupled in this touch pixel may result in the minimizing of the AC waveform only reducing and being coupled in this touch pixel of the mutual capacitance between row and column.This of Charged Couple AC waveform reduces the position that can be detected by touch system and measure to judge this object when touching this touch screen.

Relatively, based in the touch system of self-capacitance, each touch pixel can be formed by the individual electrode of the self-capacitance formed over the ground.When an object is close to this touch pixel, another direct-to-ground capacitance (capacitancetoground) can be formed between this object and this touch pixel.This another direct-to-ground capacitance may result in the net increase of the experienced self-capacitance of this touch pixel.This self-capacitance increase can be detected by touch system and measure the position judging this object when touching this touch screen.

Obscure in order to avoid understanding, it is necessary to predeclared further have:

First, for the first electrode in this utility model touch display panel, functionally, the first electrode can not only be used for the pixel electrode that image shows, again can as the sensing electrode of touch-sensing.For the technical scheme on modulation ground, the first electrode can also be public electrode, in the following related embodiment about modulation ground, this has related description.It addition, the first electrode is also not limited to pixel electrode or public electrode, it is possible to for other title but the same or analogous electrode of function.

Second, for the first electrode for pixel electrode, for single pixel electrode, including two kinds of prevailing operating state, respectively touch-sensing state and image display status.Wherein, for image display status, it is subdivided into two kinds of main display states, respectively image display Flushing status and image display maintenance state.Described image display status shows Flushing status from image, image display refreshes the complete image that is put into afterwards and shows maintenance state, until entering touch-sensing state.

Such as, after one first electrode has performed touch-sensing, it is provided that gray scale voltage performs image display refreshing to described first electrode, when gray scale voltage is written into after the first electrode, image display refreshing completes, and correspondingly, stops providing gray scale voltage to the first electrode.Afterwards, the first electrode enters image display maintenance state, until the first electrode performs touch-sensing next time.It addition, image display refreshing can farther include the first electrode is pre-charged or pre-arcing, when first electrode of same a line reoffers the gray scale voltage realizing predetermined grey menu to the first electrode after reaching same voltage.

It is noted that image display refreshes and the image display maintenance different display state of both, it is prepare for being best understood from following described each embodiment of the present utility model.It addition, more clearly " image display refreshes " is technological concept two kinds different from " image shows maintenance ".Correspondingly, in some embodiments, when require in touch display panel any 2 first electrode non-concurrent perform images display refresh with touch-sensing time, be there are 2 first electrodes to perform image display simultaneously and keep and the situation of touch-sensing.

3rd, for whole touch display unit, including three prevailing operating state, it is touch-sensing state, image display Flushing status and vertical blanking period respectively.

Below, each embodiment of the present utility model is illustrated.

Refer to the schematic diagram that Fig. 1, Fig. 1 are this utility model electronic equipment one embodiment.Electronic equipment 100 is as various proper product such as mobile phone, panel computer, notebook computer, desktop computer, Wearable and Smart Homes.This is not limited as by this utility model.Electronic equipment 100 includes touch display unit 1.Touch display unit 1 is used for realizing image and shows and touch-sensing.Display device in touch display unit 1 is such as liquid crystal indicator, i.e. touch display unit is touch liquid crystal display device.Mainly illustrate for touch liquid crystal display device below.So, changing ground, the display device in touch display unit 1 is alternatively the display device of other suitable type, e.g., and display device of electronic paper (EPD) etc..

See also the schematic diagram that Fig. 2, Fig. 2 are touch display unit 1 one embodiment shown in Fig. 1.Described touch display unit 1 includes touch display panel 10 and drive circuit 20.Described drive circuit 20 is connected with described touch display panel 10, is used for driving described touch display panel 10 to perform image and shows and self-capacitance touch-sensing.

Described touch display panel 10 includes multiple show electrode 11, and the plurality of show electrode 11 is used for performing image and shows, at least part of show electrode 11 in the plurality of show electrode 11 is further used for performing self-capacitance touch-sensing.Definition not only showed but also was the first electrode 101 for performing the show electrode 11 of self-capacitance touch-sensing for performing image.Described drive circuit 20 is used for providing touch-sensing to drive signal to perform self-capacitance touch-sensing to the first electrode 101, also provides for gray scale voltage and performs image to show electrode 11 and show.

Showing owing to the first electrode 101 of touch display panel 10 is both used for performing image, being used for again performing self-capacitance touch-sensing, therefore, described touch display unit 1 is more lightening.

In the present embodiment, the plurality of show electrode 11 arrangement in two-dimensional array type.The plurality of show electrode 11 is coplanar with layer.So, changing ground, in other embodiments, the plurality of show electrode 11 also can be Else Rule or non-regular arrangement.The plurality of show electrode 11 is with layer or coplanar.

A kind of mode of operation is: all show electrode 11 had not only been used for performing image and shows but also for performing self-capacitance touch-sensing.So, change ground, some show electrode 11, such as, head and the tail two row or wherein a line show electrode 11, only show or touch-sensing is also feasible for performing image, in order to become apparent from understanding, for the show electrode 11 shown in Fig. 2, be positioned at the extra-regional show electrode of broken box 11 for described first electrode 101, be positioned at the show electrode 11 (on touch display panel 10 show electrode 11 of last column) in broken box region then no matter the first electrode 101 be perform image show or when execution touch-sensing, performing image all always and showing.

It will be appreciated that, the above is to know explanation, figure 2 illustrates part show electrode 11 and be used as the first electrode 101, so, whole show electrodes in the touch display unit 1 that present specification is following 11 be not only used for performing image and had shown but also for performing self-capacitance touch-sensing, correspondingly, below in the description of each embodiment, all it is used as the first electrode 101 for whole show electrodes 11 to be described and illustrate, but, for one of ordinary skill in the art, it is according to the following various embodiments of present specification, it is to be readily apparent that other embodiment that not all show electrode 11 is used as the first electrode 101, in order to clear succinct, other embodiment relevant repeats no more, but the protection domain of the application all should be fallen into.

In the present embodiment, touch display unit 1 is to illustrate for touch liquid crystal display device, and correspondingly, described show electrode 11 is pixel electrode.The shape approximate rectangular (as shown in Figure 2) of described first electrode 101, so, however it is not limited to rectangle.The length L of each first electrode 101 generally ranges for 20 microns to 300 microns, and width W is generally in the range of 10 microns to 150 microns.It should be noted that the shape of described first electrode 101 is not generally regular rectangular shape.It addition, the length L and width W of the first electrode 101 also not limit to aforementioned usual scope.

Drive circuit 20 non-concurrent drives one first electrode 101 in 2 first electrodes 101 to perform self-capacitance touch-sensing, another first electrode 101 performs image display and refreshes.Correspondingly, for realizing aforementioned type of drive, in one embodiment, drive circuit 20 non-concurrent provides touch-sensing to drive signal and gray scale voltage to touch display panel 10.So, change ground, in other embodiments, drive circuit 20 also can provide touch-sensing to drive signal and gray scale voltage to described touch display panel 10 simultaneously, but reaches to control that non-concurrent drives one first electrode 101 in 2 first electrodes 101 to perform self-capacitance touch-sensing, another first electrode 101 performs the purpose that image display refreshes by controlling the output of drive circuit 20 itself.Because the development along with circuit engineering and touch display panel 10 technology, increasing circuit can be formed in touch display panel 10, therefore, described drive circuit 20 is likely to output touch-sensing simultaneously and drives signal and gray scale voltage to described touch display panel 10, but it is not that to export this situation to the first electrode 101 be also possible simultaneously.

Refer to the electrical block diagram that Fig. 3, Fig. 3 are the another embodiment of this utility model touch display unit 1.Described touch display panel 10 farther includes multi-strip scanning line 102, a plurality of data lines 103, multiple control switch 104 and the second electrode 105.Described multi-strip scanning line 102 insulate arranged in a crossed manner with described a plurality of data lines 103.The plurality of switch 104 that controls is separately positioned on the insulation infall of described multi-strip scanning line 102 and described a plurality of data lines 103.Each switch 104 that controls includes controlling electrode G, the first transmission electrode S and the second transmission electrode D.Wherein, controlling electrode G and connect scanning line 102, the first transmission electrode S connects data wire 103, and the second transmission electrode D connects the first electrode 101.It is used for forming electric field between described second electrode 105 and described first electrode 101, to control the light transmittance of touch display panel 10.In this embodiment party, owing to being for touch liquid crystal display device, therefore, correspondingly, the second electrode 105 is public electrode.

In the present embodiment, described multi-strip scanning line 102 is arranged with described a plurality of data lines 103 square crossing.Specifically, described multi-strip scanning line 102 X all in the first direction extends, each other Y arrangement in a second direction；Described a plurality of data lines 103 Y all in a second direction extends, each other X arrangement in the first direction.In the present embodiment, first direction X is line direction, and second direction Y is column direction.Changing ground, in other embodiments, first direction X can also be column direction, and second direction Y is line direction.It addition, first direction X and second direction Y also can be non-perpendicular.

In the present embodiment, the described switch 104 that controls is thin film transistor switch.Described thin film transistor switch includes amorphous silicon film transistor switch, low-temperature polysilicon film transistor switch, high temperature polysilicon thin film transistor switch, metal oxide thin-film transistor switch etc..Wherein, described metal oxide thin-film transistor switch is as indium gallium zinc (IGZO) thin film transistor switch.Correspondingly, described control electrode G is grid, and described first transmission electrode S is source electrode, and described second transmission electrode D is drain electrode.So, changing ground, in other embodiments, the described switch 104 that controls is alternatively the switch of other suitable type, and e.g., double pole triode switchs.

Described drive circuit 20 is used for providing touch-sensing control signal to described multi-strip scanning line 102, activates the control switch 104 being connected with described multi-strip scanning line 102.Additionally, described drive circuit 20 also provides for described touch-sensing and drives signal to described a plurality of data lines 103, described touch-sensing drives signal to be transferred to the first electrode 101 by the control switch 104 activated, thus, drive described first electrode 101 to perform self-capacitance touch-sensing.

The voltage signal that described touch-sensing drives signal to be change, for instance for periodically variable square-wave pulse signal.So, described touch-sensing drives signal to be alternatively other suitable driving signals such as current signal, is not limited to voltage signal, it addition, described touch-sensing drives signal to be alternatively other suitable waveform signals such as nonperiodic signal, and sine wave, trapezoidal wave.

In the present embodiment, when touch-sensing, touch-sensing control signal and touch-sensing drive the pressure reduction between signal to remain unchanged.Correspondingly, touch-sensing control signal is also the signal of change, and makes to control switch 104 conducting.

Owing to described touch display panel 10 is when performing touch-sensing, described touch-sensing control signal and described touch-sensing drive the pressure reduction between signal to remain unchanged, control the charge/discharge electricity amount of the parasitic capacitance of formation between electrode G and the first electrode 101 such that it is able to reduce, and then improve touch-sensing precision.

Further, when the first electrode 101 performs touch-sensing, described drive circuit 20 can further provide for secondary signal to the scanning line 102 being connected with the first electrode 101 of non-executing touch-sensing, described secondary signal can make control switch 104 be in cut-off state, can also keep simultaneously and touch-sensing drives the pressure reduction between signal constant.

Such as, the scanning line 102 that described secondary signal is provided to the scanning line 102 of contiguous the first electrode 101 performing touch-sensing or all the first electrodes 101 with non-executing touch-sensing are connected.Wherein, concept for " vicinity ", illustrate, as, 41st the first electrode 101 driven circuit 20 walking to the 80th row simultaneously drives execution self-capacitance touch-sensing, that the 1st article to the 40th bar scanning line scanning the first electrode 101 that line 102 is contiguous 41st row, the 81st article to the 120th bar scanning line scanning the first electrode 101 that line 102 is contiguous 80th row.The scanning line 102 of " vicinity " is such as the scanning line 102 (for unilateral) within 40 of the first electrode 101 adjoining execution touch-sensing.So, the bar number of described " vicinity " scanning line 102 also extends to the scanning line 102 (for unilateral) within 200.

Described touch-sensing control signal, except the voltage signal for above-mentioned change, changes ground, in other embodiments, is alternatively constant signal for activating the described touch-sensing control signal controlling switch 104.It addition, touch-sensing control signal also and unrestricted certain drives signal maintenance pressure reduction constant with touch-sensing.

Described drive circuit 20 is further used for the control switch 104 by activating and data wire 103 receives the touch-sensing detection signal from the first electrode 101 output, and know that touch display panel 10 is touched or close proximity by target object (that is, above-mentioned touch object) according to described touch-sensing detection signal.Described target object is as positions such as the finger of user, toes, it is possible to for the object of other suitable type, such as felt pen etc., and following mainly illustrates for target object for finger.Defining the electric capacity between described target object and the first electrode 101 is hand capacity (not shown).

When performing touch-sensing, described drive circuit 20 can drive scanning line 102 line by line, it is possible to once simultaneously drives at least two scanning lines 102.In one embodiment, for instance, simultaneously drive at least two scanning lines 102 every time.Described at least two scanning lines 102 are adjacent scanning lines.So, changing ground, described at least two scanning lines 102 also can not be adjacent scanning lines, e.g., for other suitable situations such as interlaced line.Further, scan line 102 scanned or control switch 104 be activated time, described drive circuit 20 controls part or all of first electrodes 101 that switch 104 is connected perform self-capacitance touch-sensing to activating.In other words, described drive circuit 20 provides touch-sensing to drive signal to part or all of data wire 103.

When described drive circuit 20 is for performing self-capacitance touch-sensing to the first electrode 101 being connected with segment data line 103, described drive circuit 20 further provides for the 3rd signal and drives the pressure reduction between signal to remain unchanged to the data wire 103 being connected with the first electrode 101 of non-executing touch-sensing, described 3rd signal and described touch-sensing.

Such as, the data wire 103 that described 3rd signal is provided to the data wire 103 of contiguous the first electrode 101 performing touch-sensing or all the first electrodes 101 with non-executing touch-sensing are connected.Wherein, concept for " vicinity ", illustrate, as, 51st row simultaneously drive execution self-capacitance touch-sensing to the first electrode 101 driven circuit 20 of the 100th row, that the 1st article data wire to the first electrode 101 that the 50th data line 103 is contiguous 51st row, the 101st article of data wire to the first electrode 101 that the 150th data line 103 is contiguous 100th row.The data wire 103 of " vicinity " is such as the data wire 103 (for unilateral) within 50 of the first electrode 101 adjoining execution touch-sensing.So, the bar number of described " vicinity " data wire 103 also extends to the data wire 103 (for unilateral) within 250.

Further, described drive circuit 20 also provides for scanning signal to described multi-strip scanning line 102, activate the control switch 104 being connected with described multi-strip scanning line 102, the gray scale voltage that described drive circuit 20 provides is transferred to the first electrode 101 by data wire 103 with the control switch 104 activated, additionally, described drive circuit 20 also provides for common electric voltage to the second electrode 105, refreshes thus driving described touch display panel 10 to perform image display.Wherein, the described scanning signal for activating control switch 104 is preferably constant voltage.Pressure reduction between described first electrode 101 and the second electrode 105 is for determining that the display gray scale of touch display unit 1 is other.

Can be seen that from the description above, owing to this utility model touch display unit 1 performs touch-sensing function by the described multi-strip scanning line 102 of multiplexing display floater, a plurality of data lines 103, multiple control switch 104 and multiple first electrode 101, therefore, touch display unit 1 of the present utility model and to have the electronic equipment 100 of described touch display unit 1 more lightening.

It is different that described drive circuit 20 is supplied to the common electric voltage being supplied to the second electrode 105 when the common electric voltage (or being called " the first signal ") of the second electrode 105 performs image display refreshing from driving the first electrode 101 when driving the first electrode 101 to perform touch-sensing, wherein, the pressure reduction that described drive circuit 20 is supplied between the common electric voltage of the second electrode 105 and the touch-sensing driving signal being supplied to the first electrode 101 when driving the first electrode 101 to perform touch-sensing remains unchanged；Described drive circuit 20 can be a constant voltage at the common electric voltage driving the first electrode 101 to perform to be supplied to when image display refreshes the second electrode 105, so, it is possible to for square-wave signal.

The pressure reduction being supplied between the common electric voltage of the second electrode 105 and the touch-sensing driving signal being supplied to the first electrode 101 when driving the first electrode 101 to perform touch-sensing due to described drive circuit 20 remains unchanged, therefore, can reduce or avoid the Capacitance Coupled interference that the second electrode 105 brings when the first electrode 101 performs touch-sensing, thus improving touch-sensing precision.

So, change ground, described drive circuit 20 is supplied to the common electric voltage (or being called " the first signal ") of the second electrode 105 when driving the first electrode 101 to perform touch-sensing also can be identical with the common electric voltage driving the first electrode 101 and perform to be supplied to when image display refreshes the second electrode 105, and the effect above is not good comparatively speaking simply to sense effect.

Usually, electronic equipment generally includes bright screen duty and blank screen holding state.At blank screen holding state, electronic equipment does not generally do substantive work, and touch display panel presents black, it does not have light passes.Relatively, in bright screen duty, electronic equipment has light to pass touch display panel, and can perform corresponding function.Specifically, bright screen duty can include again bright screen screen lock state and bright screen released state.When electronic equipment is in blank screen holding state, user needs first to click power key or the Home key of electronic equipment, wake touch display unit up to bright screen screen lock state, then, user inputs password again, when password is correct, touch display unit enters released state, and user can start to control electronic equipment and perform corresponding function.

So, it is no matter that power key or Home key are after the pressing of a large amount of number of times, it is possible to will be malfunctioning, causes the part needing more to renew.It addition, the program step that above-mentioned control electronic equipment is switched to released state from blank screen holding state slightly shows numerous and diverse, correspondingly, inventor of the present utility model proposes, by big quantity research correspondence, the wake-up mode that electronic equipment is new.

At blank screen holding state, touch display unit 1 of the present utility model performs touch-sensing function, and when target object presses the predetermined way described touch display panel 10 of touch, described touch display unit 1 wakes entrance screen lock state up or is directly entered solution screen state.Wherein, described predetermined way as specific touch path etc., thus, use quality and the service efficiency of product can be improved, make electronic equipment 100 more humane.

In order to know difference, defining described drive circuit 20 at the common electric voltage driving the first electrode 101 to perform to be supplied to when image display refreshes the second electrode 105 is the first common electric voltage；Define described drive circuit 20 and be in bright screen duty and to be supplied to the common electric voltage of the second electrode 105 when driving the first electrode 101 to perform touch-sensing be the second common electric voltage at electronic equipment 100；Define described drive circuit 20 and be in blank screen holding state and to be supplied to the common electric voltage of the second electrode 105 when driving the first electrode 101 to perform touch-sensing be the 3rd common electric voltage at electronic equipment 100.

Specifically, at blank screen holding state, drive circuit 20 provides touch-sensing to drive signal to the first electrode 101, and provides the 3rd common electric voltage to the second electrode 105.Wherein, described touch-sensing drives signal identical with described 3rd common electric voltage, thus not only making touch display panel 10 show black picture, also makes touch display panel 10 perform touch-sensing function.

Further, at blank screen holding state, drive circuit 20 stops providing gray scale voltage to the first electrode 101, and stops providing the first common electric voltage to the second electrode 105.That is, at blank screen holding state, touch display unit 1 is optional continuously carries out touch-sensing.So, changing ground, at blank screen holding state, drive circuit 20 also can drive the first electrode 101 timesharing to perform image display refreshing and self-capacitance touch-sensing.Wherein, when performing image display and refreshing, the gray scale voltage that drive circuit 20 is supplied to the first electrode 101 is identical with the common electric voltage being supplied to the second electrode 105, shows thus realizing black picture.

It should be noted that in bright screen duty, when described drive circuit 20 drives described touch display panel 10 to perform touch-sensing, it is provided that the second common electric voltage gives the second electrode 105.Described second common electric voltage is preferably different from described 3rd common electric voltage.

Refer to the structural representation of the another embodiment that Fig. 4, Fig. 4 are touch display panel 10.Described touch display panel 10 farther includes first substrate 106 and first substrate 106 is oppositely arranged second substrate 107 and the display medium layer 108 being arranged between described first substrate 106 and second substrate 107.In the present embodiment, described display medium layer 108 is liquid crystal layer.Described first substrate 106 and described second substrate 107 are transparency carrier, as glass substrate or film substrate etc..Described multi-strip scanning line 102, a plurality of data lines 103, multiple control switch the 104, second electrode 105 and the plurality of first electrode 101 are arranged between described first substrate 106 and second substrate 107.

In the present embodiment, described multi-strip scanning line 102, a plurality of data lines 103, multiple control switch 104 and the plurality of first electrode 101 are formed on second substrate 107, form array base palte, such as thin film transistor (TFT) (TFT) array base palte.It addition, show to realize coloured image, it is preferably provided with the element (not shown) such as colored filter and black matrix" at first substrate 106 in the face of the side of described second substrate 107, forms colored filter (CF) substrate.Wherein, described first substrate 106 show back to the side of described second substrate 107 for image and receives the touch of user or close inputs.Definition first substrate 106 is used for image and shows and receive the touch of user or show side A close to the side inputted for touch.

Fringe field is formed, to control the deflection angle of liquid crystal molecule, thus controlling the light transmittance of touch display panel 10 between described first electrode 101 and the second electrode 105.In this embodiment, described second electrode 105 and the plurality of first electrode 101 are positioned at different layers, and arrange with the plurality of first electrode 101 stacking.Further, described second electrode 105 is between described display medium layer 108 and the plurality of first electrode 101.Wherein, described second electrode 105 is provided with engraved structure 115 in the region of corresponding first electrode 101, so that forming fringe field between described second electrode 105 and the plurality of first electrode 101.

Seeing also Fig. 5, Fig. 5 is the part enlarged plan view of the second electrode 105 and the first electrode 101 shown in Fig. 4.Multiple engraved structures 115 of corresponding same first electrode 101 are arranged along third direction, and extend along fourth direction.In the present embodiment, described third direction is identical with first direction X, and described fourth direction is identical with second direction Y.So, this utility model is not restricted to this, and described third direction also can be identical with second direction Y, and described fourth direction is identical with first direction X, or, third direction, fourth direction are all different from first direction X, second direction Y.The plurality of engraved structure 115 is such as bar shaped, and so, the plurality of engraved structure 115 is alternatively other suitable shape, and this is not limited by this utility model.Again such as, the size and shape of the plurality of engraved structure 115 is identical, so, changes ground, and the size and shape of the plurality of engraved structure 115 also can be different.

In the direction arranged along the plurality of engraved structure 115 (just to same first electrode 105), the width L1 of described engraved structure 115 is more than or equal to the width L2 in region between adjacent engraved structure 115, or/and, just the region of uniform oblique line (is beaten in the region 113 between the adjacent engraved structure 115 of same first electrode 101, to distinguish engraved structure 115) area A2 be preferably lower than or equal to the area A1 of an engraved structure 115, wherein, the edge in the region 113 between described adjacent engraved structure 115 is without departing from the edge of engraved structure 115.Correspondingly, the Capacitance Coupled area between described first electrode 101 and target object is big to strain, and then can improve touch-sensing precision.

Referring to Fig. 6, Fig. 6 is the cut-away section structural representation of the another embodiment of touch display panel 10 described in Fig. 4.It is denoted as 10a, label identical with same or similar element employing in described touch display panel 10 in described touch display panel 10a for the touch display panel shown in the touch display panel 10, Fig. 6 described in difference Fig. 4.Described touch display panel 10a is essentially identical with described touch display panel 10, differring primarily in that of the two: described second electrode 105 is arranged between the first electrode 101 and second substrate 107；It addition, omit display medium layer 108 and first substrate 106.

Owing to the first electrode 101 is arranged on the second electrode 105, therefore, correspondence can be done the first electrode 101 greatly relatively, thus improving the capacity area being coupled with target object or touch object, and then, improve touch-sensing precision.

When described second electrode 105 is arranged between the first electrode 101 and second substrate 107, described second electrode 105 can be not provided with engraved structure 115.So, in order to improve edge electric field strength, may select on the first electrode 101, be correspondingly arranged engraved structure 115 as above.Change ground, when the first electrode 101 is between first substrate 106 and the second electrode 105, the first electrode 101 and the second electrode 105 also can all be not provided with engraved structure.

Seeing also Fig. 7, Fig. 7 is the part enlarged plan view of the second electrode 105 and the first electrode 101 shown in Fig. 6.Region 113 is there is also between adjacent engraved structure 115 on same first electrode 101.Correspondingly, multiple engraved structures 115 on same first electrode 101: along the direction of the plurality of engraved structure 115 arrangement, the width L1 of described engraved structure 115 is less than or equal to the width L2 in region between adjacent engraved structure 115, or/and, the area A2 in the region 113 between adjacent engraved structure 115 is preferably greater than or equal to the area A1 of an engraved structure 115, wherein, the edge in the region 113 between described adjacent engraved structure 115 is without departing from the edge of engraved structure 115.Correspondingly, the Capacitance Coupled area between described first electrode 101 and target object is big to strain, and then can improve touch-sensing precision.It should be noted that be no matter described second electrode 105 be arranged on described first electrode 101 or under, be respectively provided with insulating barrier (sign) between this two classes electrode.

It addition, this utility model is not limiting as between described first electrode 101 and the second electrode 105 forms fringe field, changes ground, between described second electrode 105 and described first electrode 101, also can form vertical electric field.Correspondingly, described second electrode 105 is arranged between first substrate 106 and display medium layer 108, as above-mentioned touch, second substrate 107 shows that side A is also feasible back to the side of described first substrate 106.It addition, the plurality of first electrode 101 may be alternatively located at same layer with described second electrode 105, fringe field can also be formed equally.

Owing to data wire 103 and control switch 104 drive signal to described first electrode 101 for transmitting touch-sensing, therefore, when target object touch respective data lines 103 on touch display panel 10 or/and control switch 104 position time, thus, false sensing or the precision of the real sensing of impact can be caused.

Correspondingly, in order to overcome foregoing problems, can arranging screen layer in described touch display panel 10 further, described screen layer is at described first substrate 106 and data wire 103 and controls between switch 104, is used for covering described data wire 103 and controlling switch 104.Described drive circuit 20 provides shielded signal to described screen layer.Described shielded signal and described touch-sensing drive the pressure reduction between signal to remain unchanged, thus avoiding data wire 103 and controlling switch 104 impacts on the sensing precision of the first electrode 101.Certainly, described screen layer also can only cover described data wire 103 and one of control in switch 104 these two class components class component, and correspondence also can solve the problems referred to above to a certain extent, and not necessarily limits this two class component of covering, preferably, data wire 103 at least be covered.

It should be noted that described screen layer can be structure as a whole, it is possible to for Split type structure.When screen layer is Split type structure, described screen layer includes the first bucking electrode and secondary shielding electrode, wherein, data wire 103 described in described first bucking electrode partly or completely all standing, control switch 104 described in described secondary shielding electrode partly or completely all standing.

Further, owing to there is parasitic capacitance between described scanning line 102 and described first electrode 101, therefore, when target object touches the position of corresponding scanning line 102 on touch display panel 10, the touch-sensing precision of the first electrode 101 can also be affected.Correspondingly, described screen layer correspondence covers described scanning line 102, or, described screen layer farther includes the 4th bucking electrode, scans line 102 described in described 4th bucking electrode partly or completely all standing.Preferably, described screen layer is completely covered described multi-strip scanning line 102, a plurality of data lines 103 and multiple control switch 104.

When additionally arranging screen layer, though the technical problem of sensing precision step-down can be solved, but can in a disguised form increase the thickness of touch display panel 10, therefore, the utility model proposes selection multiplexing the second electrode 105 as described screen layer.

Seeing also Fig. 8 and Fig. 4, Fig. 8 is the structural representation after touch display panel 10 shown in Fig. 4 assembles.Adjacent two pleurapophysis of described second substrate 107 are for described first substrate 106, for edge cabling.Size according to touch display panel 10 is different, for instance undersized touch display panel, described second substrate 107 also only can protrude from described first substrate 106 in side.Described first substrate 106 and the described equitant region of second substrate 107 are defined as touch viewing area T, and the region that second substrate 107 protrudes from described first substrate 106 is defined as marginal zone H.Described second electrode 105 be such as completely covered be positioned at described touch viewing area T data wire 103, scanning line 102, control switch 104.

At described marginal zone H, the first connecting line the 109, second connecting line 110 and the 3rd bucking electrode 111 is set further.Described first connecting line 109 is used for connecting described data wire 103 to described drive circuit 20 (see Fig. 3).It should be noted that Fig. 3 eliminates described first connecting line the 109, second connecting line 110 and the 3rd bucking electrode 111.Described second connecting line 110 is used for connecting described scanning line 102 to described drive circuit 20 (see Fig. 3).Described first connecting line 109 and described second connecting line 110 are between described 3rd bucking electrode 111 and described second substrate 107.Described drive circuit 20 is used for providing shielded signal to described 3rd bucking electrode 111.Thus, it is to avoid impact on touch-sensing precision when target object touches the marginal zone H of electronic equipment 100.Preferably, described shielded signal and described touch-sensing drive the pressure reduction between signal to remain unchanged.It should be noted that also need to arrange insulating barrier between described 3rd bucking electrode 111 and described first connecting line 109, described second connecting line 110.

Referring again to Fig. 3, described drive circuit 20 includes touching drive circuit 201, display driver circuit 203 and public voltage generating circuit 207.Wherein, described touch drive circuit 201 is connected respectively with scanning line 102 and data wire 103, for providing touch-sensing control signal to scanning line 102, it is additionally operable to by data wire 103 and controls switch 104 offer touch-sensing driving signal to the first electrode 101, driving the first electrode 101 to perform self-capacitance touch-sensing.Described display driver circuit 203 is connected respectively with scanning line 102 and data wire 103, for providing scanning signal to scanning line 102, for providing gray scale voltages to the first electrode 101 by data wire 103 and control switch 104, described public voltage generating circuit 207 also provides for the first common electric voltage to the second electrode 105, performs image display and refreshes.

Described drive circuit 20 farther includes control circuit 205.Described control circuit 205 is connected respectively with described touch drive circuit 201 and described display driver circuit 203, is that described touch drive circuit 201 exports touch-sensing control signal and touch-sensing drives signal to scan signal and gray scale voltage to described touch display panel 10 to described touch display panel 10 or described display driver circuit 203 output for control.It addition, described control circuit 205 be additionally operable to control described drive circuit 20 the first electrode 101 perform image display refresh with touch-sensing time, provide different common electric voltage to the second electrode 105 respectively.It should be noted that described drive circuit 20 is when the first electrode 101 performs image display refreshing with touch-sensing, it is provided that also can be identical to the common electric voltage of the second electrode 105.

Preferably, described touch drive circuit 201 includes touch-sensing control circuit 2011 and touch-sensing testing circuit 2013.Described touch-sensing control circuit 2011 is connected with described multi-strip scanning line 102, is used for providing touch-sensing control signal to described multi-strip scanning line 102, activates the control switch 104 being connected with scanning line 102.Described touch-sensing testing circuit 2013 is connected with described a plurality of data lines 103, for driving signal to the first electrode 101 by data wire 103 and the control switch 104 offer touch-sensing activated, drives the first electrode 101 to perform self-capacitance touch-sensing.Described touch-sensing testing circuit 2013 receives the touch-sensing detection signal from the first electrode 101 output by the control switch 104 activated with data wire 103 further, and knows that touch display panel 10 is touched or close proximity by target object according to described touch-sensing detection signal.Wherein, touch-sensing control circuit 2011 or formation in the chips, or are formed on touch display panel 10.When being formed on touch display panel 10, touch-sensing control circuit 2011 such as together forms on the second substrate 107 of touch display panel 10 (described second substrate 107 is shown in Fig. 4) with controlling switch 104.

Display driver circuit 203 includes scan drive circuit 2031 and data drive circuit 2033.Scan drive circuit 2031 is connected with described multi-strip scanning line 102, is used for providing scanning signal to described multi-strip scanning line 102, activates the control switch 104 being connected with scanning line 102.Data drive circuit 2033 is connected with described a plurality of data lines 103, for providing gray scale voltage to the plurality of first electrode 101 by data wire 103 and the control switch 104 activated, drives the plurality of first electrode 101 to perform image display and refreshes.Wherein, scan drive circuit 2031 or formation in the chips, or are formed on touch display panel 10.When being formed on touch display panel 10, scan drive circuit 2031 preferably together forms on the second substrate 107 of touch display panel 10 (described second substrate 107 is shown in Fig. 4) with controlling switch 104.

It should be noted that, shown in Fig. 3 is touch-sensing testing circuit 2013 and data drive circuit 2033 opposite sides that is positioned at touch display panel 10, it is connected with the opposite end of data wire 103 respectively, so, preferably, touch-sensing testing circuit 2013, data drive circuit 2033 are all connected (seeing below Figure 11) with the terminal of data wire 103 the same side, and Fig. 3 is limited to the size of accompanying drawing and touch-sensing testing circuit 2013, data drive circuit 2033 are connected by element annexation correspondence with the opposite end of data wire 103.

Preferably, described drive circuit 20 farther includes public voltage generating circuit 207.Described public voltage generating circuit 207 is connected with described control circuit 205, for producing described first common electric voltage, the second common electric voltage and the 3rd common electric voltage, and under the control of control circuit 205, the corresponding common electric voltage of corresponding output gives the second electrode 105.

Specifically, when touch display unit 1 performs image, control circuit 205 controls public voltage generating circuit 207 provides the first common electric voltage to the second electrode 105；When touch display unit 1 is in bright screen duty and performs self-capacitance touch-sensing, control circuit 205 controls public voltage generating circuit 207 provides the second common electric voltage to the second electrode 105；When touch display unit 1 is in blank screen holding state and performs self-capacitance touch-sensing, control circuit 205 controls public voltage generating circuit 207 provides the 3rd common electric voltage to the second electrode 105.

In the present embodiment, touch-sensing control circuit 2011 includes multiple outfan a.Each outfan a connects at least two scanning lines 102.Described touch-sensing control circuit 2011 exports touch-sensing control signal at least two scanning lines 102 by each outfan a simultaneously, activates and scans the control switch 104 that line 102 is connected with described at least two.Changing ground, the outfan a of described touch-sensing control circuit 2011 also can connect a scanning line 102.Wherein, touch-sensing control circuit 2011 once can be passed through an outfan a and export touch-sensing control signal at least two scanning lines 102, additionally, it is possible to once exporting touch-sensing control signal to multi-strip scanning line 102 by multiple outfan a, this utility model is without limitation simultaneously.

Described touch-sensing testing circuit 2013 includes multiple transmission ends b.Preferably, transmission ends b connects at least two data wires 103.Described touch-sensing testing circuit 2013 exports touch-sensing by described transmission ends b and drives signal to described at least two data wires 103, and receives the touch-sensing detection signal from described at least two data wire 103 outputs by described transmission ends b.Changing ground, the transmission ends b of described touch-sensing testing circuit 2013 also can connect a data line 103.Described at least two data wires 103 are such as adjacent data line.So, described at least two data wires 103 are alternatively non-conterminous data wire, e.g., for every other appropriate circumstances such as column data lines.

It can be seen that when performing touch-sensing, the plurality of first electrode 101 is divided into many groups, and multiple first electrodes 101 being connected with same outfan a and same transmission ends b form one group, are connected in parallel into a touch-sensing electrode.Preferably, be in parallel the first electrode 101 arrangement in matrix form connected.The touch-sensing electrode correspondence that multiple first electrodes 101 of same group are connected in parallel limits a touch point on touch display panel 10, described touch point is such as the long and wide square area being 1mm, but the application is not limited thereto, described touch point is alternatively the rectangular area of long and wide respectively other size, correspondingly, the increasing number of the first electrode 101 or minimizing, or the first size of electrode 101 own has corresponding change.When one group of only one of which first electrode 101, this group is the corresponding touch point limited on touch display panel 10 too.As previously described, because the first electrode 101 is approximate rectangular, therefore, described square area and rectangular area also correspond to approximating square region and approximate rectangular region.

In the present embodiment, each outfan a connects at least two scanning lines 102, and fractional transmission end b is respectively connecting to few two data wires 103, and fractional transmission end b connects a data wire 103 respectively.Change ground, in other embodiments, it is possible to being respectively connecting to few two data wires 103 for fractional transmission end b, fractional transmission end b connects a data wire 103 respectively；Part outfan a is respectively connecting to few two scanning lines 102, and part outfan a connects scan line 102 respectively.Correspondingly, the plurality of first electrode 101 is divided into many groups, and least one set includes at least two the first electrodes 101 being connected in parallel, and least one set includes one first electrode 101.

Alternatively, what be positioned at touch display panel 10 edge scans line 102 with the outfan a bar number being connected less than the scanning line 102 being positioned in the middle part of touch display panel 10 and another outfan a bar number being connected；And/or, it is positioned at the bar number that the data wire 103 at touch display panel 10 edge is connected with another transmission ends b less than the data wire 103 being positioned in the middle part of touch display panel 10 with the bar number that a transmission ends b is connected.Correspondingly, the edge touch-sensing precision of described touch display panel 10 is improved.

It is positioned at the touch point of touch display panel 10 central region such as the long and wide square area being 1mm, it is positioned at the touch point of touch display panel 10 marginal area such as the long and wide square area being 0.5mm, but this utility model is not limited thereto, the touch point on described touch display panel 10 is alternatively the rectangular area of long and wide respectively other size.

Accordingly, such as, the bar number of the scanning line 102 that the outfan a being connected with the scanning line 102 being positioned at touch display panel 10 edge is connected is 10 to 20, and the bar number of the scanning line 102 that the outfan a being connected with the scanning line 102 being positioned in the middle part of touch display panel 10 is connected is 25 to 45；The bar number of the data wire 103 that the transmission ends b being connected with the data wire 103 being positioned at touch display panel 10 edge is connected is 25 to 35, and the bar number of the data wire 103 that the transmission ends b being connected with the data wire 103 being positioned in the middle part of touch display panel 10 is connected is 40 to 60.Thus, improve edge touch-sensing precision.So, for non-crystalline silicon display panels and low temperature polycrystalline silicon display panels, or, for various sizes of touch display panel 10, the bar number scope of the scanning line 102 that the outfan a being connected from the scanning line 102 being positioned at touch display panel 10 edge connects is likely to different, the bar number scope of the scanning line 102 that the outfan a being connected from the scanning line 102 being positioned in the middle part of touch display panel 10 connects is likely to different, similarly, the bar number scope of the data wire 103 for being connected from transmission ends b is likely to different, therefore, this is not limited by this utility model, simply illustrate.

So, in other embodiments, the quantity of the scanning line 102 that each outfan a connects can be identical, and the quantity of the data wire 103 that each transmission ends b connects can be identical.Such as, each outfan a connects 25 to 45 scanning lines 102, and each transmission ends b connects 40 to 60 data line 103.Thus, improve touch-sensing precision.So, for non-crystalline silicon display panels and low temperature polycrystalline silicon display panels, or, for various sizes of touch display panel 10, the bar number scope of the scanning line 102 connected from outfan a is likely to different, similarly, the bar number scope of the data wire 103 for being connected from transmission ends b is likely to different, therefore, this is not limited by this utility model, simply illustrates.

Additionally, except above by arranging the effects that the outfan a mode with the connection strap number of scanning line 102 reaches to export touch-sensing control signal at least two scanning lines 102 simultaneously, also a scanning line 102 can only be connected by each outfan a, arranged by software or mode that software and hardware combine, make described touch-sensing control circuit 2011 once or every time simultaneously output touch-sensing control signal at least two scanning lines 102, and and the unrestricted modes connecting at least two scanning lines 102 by setting an outfan a realize.Similarly, also a transmission ends b can only be connected by each data wire 103, arranged by software or mode that software and hardware combine, make described touch-sensing testing circuit 2013 to receive touch-sensing detection signal carry out packet calculate it is also possible that, and and unrestricted by set one transmission ends b connect at least two data wires 103 mode realize.

It should be noted that when performing touch-sensing, the plurality of first electrode 101 is divided into many groups, is connected in parallel with each other between multiple first electrodes 101 of same group；So, when performing image display and refreshing, it is connected in parallel for non-between the plurality of first electrode 101.

Owing to multiple first electrodes 101 of described touch display unit 1 are divided into many groups, described drive circuit 20 drives first electrode 101 of each group to perform self-capacitance touch-sensing, and therefore, described touch display unit 1 is capable of true multiple spot self-capacitance touch-sensing.It addition, the first electrode 101 quantity by arranging different group is different, thus being correspondingly arranged the touch-sensing precision of diverse location on touch display panel 10.

Seeing also Fig. 9 and Fig. 3, Fig. 9 is the structural representation of touch-sensing testing circuit 2013 shown in Fig. 3.Described touch-sensing testing circuit 2013 includes multiple touch-sensing detection unit 232, secondary signal processes circuit 233 and multiple processing unit 235.Each touch-sensing detection unit 232 processes circuit 233 with secondary signal and a processing unit 235 is connected respectively.The plurality of touch-sensing detection unit 232 connects one to one with the plurality of transmission ends b further, or, described each touch-sensing detection unit 232 includes a node being used as described transmission ends b respectively.

It should be noted that in the present embodiment, described touch-sensing testing circuit 2013 includes a secondary signal and processes circuit 233, and all touch-sensings detection unit 232 shares a secondary signal and processes circuit 233.Changing ground, in other embodiments, described touch-sensing testing circuit 2013 may also comprise multiple secondary signal and processes circuit 233, and partial touch sensing detection unit 232 shares a secondary signal and processes circuit 233.It addition, also and non-limiting each touch-sensing detection unit 232 individually connect a processing unit 235, it is possible to be several touch-sensing detection unit 232 time-sharing multiplex one processing unit 235.

Described secondary signal processes circuit 233 and is used for exporting touch-sensing driving signal to described touch-sensing detection unit 232.Described touch-sensing detection unit 232 is used for exporting touch-sensing and drives signal to data wire 103, to switch 104 outputs to the first electrode 101 by the control activated further, the first electrode 101 is performed self-capacitance touch-sensing.

Described touch-sensing detection unit 232 receives the touch-sensing detection signal from the first electrode 101 output further, described touch-sensing is detected after signal carries out respective handling (as touch-sensing detects the voltage waveform conversion of signal, or change for voltage swing, or be converted to current waveform for voltage waveform, or electric charge is to the conversion of voltage), and the signal after output processing gives described processing unit 235.The input signal detecting unit 232 from touch-sensing is further processed (such as analog digital conversion) by described processing unit 235, and calculates acquisition touch coordinate.

See also the structural representation of the embodiment that Figure 10, Figure 10 are the detection unit 232 of touch-sensing shown in Fig. 9 and processing unit 235.Described touch-sensing detection unit 232 includes the first operational amplifier P1, feedback capacity Cf and the four switchs K4.Described first operational amplifier P1 includes in-phase end e1, end of oppisite phase f1 and outfan g1.Described feedback capacity Cf and the 4th switch K4 is connected in parallel between described end of oppisite phase e1 and outfan g1, and described 4th switch K4, for the conducting of interval on schedule and cut-off, plays the effect of replacement (Reset) feedback capacity Cf two ends electric charge.Described in-phase end e1 connects secondary signal and processes circuit 233.Described end of oppisite phase f1 connects transmission ends b further, or, described end of oppisite phase f1 is further used as described transmission ends b.Described outfan g1 connects processing unit 235.

When performing to touch detection, described first operational amplifier P1 is in empty short status, described secondary signal processes the touch-sensing of circuit 233 output and drives signal to export to data wire 103 by in-phase end e1 and end of oppisite phase f1, and then exported to the first electrode 101 by the control switch 104 activated, drive the first electrode 101 to perform self-capacitance touch-sensing.When there being finger to touch the first electrode 101, first electrode 101 exports corresponding touch-sensing detection signal to end of oppisite phase f1 by data wire 103, described touch-sensing detection signal is changed through the electric charge of feedback capacity Cf or is processed, the corresponding signal in outfan g1 generation with touch-sensing detection signal correction.Wherein, the magnitude relationship between feedback capacity Cf and described hand capacity determines the amplitude of variation size at signal produced by outfan g1.

Described processing unit 235 includes analog to digital signal conversion unit 2351 and computing unit 2355.The outfan g1 detecting unit 232 from the touch-sensing signal exported is carried out analog digital conversion by described analog to digital signal conversion unit 2351, and exports the digital signal after conversion to described computing unit 2355.Described computing unit 2355 calculates according to described digital signal and obtains touch coordinate.Described computing unit 2355 is connected with a main control chip 3, for exporting the signal representing touch coordinate to main control chip 3.Described main control chip 3 controls electronic equipment 100 according to the signal correspondence of described expression touch coordinate and performs corresponding function.

It should be noted that, structure that touch-sensing detection unit 232 shown in Figure 10 and processing unit 235 are an embodiment of the present utility model and and unrestricted, changing ground, in other embodiments, touch-sensing detection unit 232 is alternatively other suitable structure with processing unit 235.Such as, touch-sensing testing circuit 2013 (specific to described touch-sensing detect unit 232 with as described in processing unit 235) in the corresponding circuit module of increase or clipped circuit module it is also possible that, or, adopting other circuit module or circuit unit also to realize identical function is possible equally.Specifically, e.g., farther including filter unit between analog to digital signal conversion unit 2351 and outfan g1, filter unit exports filtered signal again to analog to digital signal conversion unit 2351 after being filtered the outfan g1 signal exported processing.

Again such as, level conversion unit can be set further between described computing unit 2355 and described analog to digital signal conversion unit 2351, described level conversion unit for carrying out level conversion to the digital signal of described analog to digital signal conversion unit 2351 output, and the digital signal after output level conversion is to computing unit 2355.Described computing unit 2355 calculates according to the digital signal after level conversion and obtains touch coordinate.Again such as, described computing unit 2355 and described level conversion unit transposition, correspondingly, the digital signal after conversion is exported to described computing unit 2355 by described analog to digital signal conversion unit 2351.Described computing unit 2355 calculates according to described digital signal and obtains touch coordinate, and would indicate that the signal of touch coordinate exports to level conversion unit, after the signal receiving expression touch coordinate is carried out level conversion by described level conversion unit, export to described main control chip 3 again, also it is so possible, it is necessary to determine according to the pressure situation of computing unit 2355 with analog to digital signal conversion unit 2351.

Referring again to Fig. 3, generally, described drive circuit 20 farther includes display and processes circuit (not shown) and described level conversion unit (not shown), described display processes circuit for the video data from main control chip 3 carries out relevant treatment (such as storage, decompression, color conversion etc.), and is exported to data drive circuit 2033 by control circuit 205 by the video data after processing.Described data drive circuit 2033 changes described video data into corresponding gray scale voltage.Described level shifting circuit is for carrying out level conversion to some signal in described drive circuit 20, such as, except being likely to the signal representing touch coordinate of computing unit 2355 output is carried out level conversion, it is likely to the video data that display is processed circuit output and carries out level conversion, video data after output level conversion is to control circuit 205 again, with the request signal transmission between satisfied different voltage holding circuit devices.Described video data is preferably digital signal.

Referring again to Figure 10 and Fig. 9, described touch-sensing testing circuit 2013 can farther include the 3rd switch K3, and described 3rd switch K3 is connected between transmission ends b and touch-sensing detection unit 232.

Touch-sensing control circuit 2011 is after providing touch-sensing control signal to scanning line 102, before providing touch-sensing to drive signal to perform self-capacitance touch-sensing to the first electrode 101, drive circuit 201 controls the 3rd switch K3 further and disconnects, so that the first short circuit of the first electrode 101 being connected with same touch-sensing detection unit 232 reaches a scheduled time.

Described drive circuit 20 is after controlling described 3rd switch K3 disconnection and reaching the described scheduled time, control the 3rd switch K3 Guan Bi again, and provide a predetermined voltage to the first electrode 101 of phase short circuit, after the first electrode 101 of phase short circuit reaches described predetermined voltage, described touch-sensing testing circuit 2013 starts described first electrode 101 is performed self-capacitance touch-sensing.It is thus possible to reduce the effect of power consumption.

Change ground, after described first electrode 101 short circuit reaches a scheduled time, it is possible to the aforementioned offer predetermined voltage step to the first electrode 101 of phase short circuit is provided, but directly provides touch-sensing to drive signal to perform self-capacitance touch-sensing to the first electrode 101.

Such as, described control circuit 205 is for controlling Guan Bi and the disconnection of the 3rd switch K3.It addition, described 3rd switch K3 or formation are on touch display panel 10, or formed in the chips.When being formed on touch display panel 10, described 3rd switch K3 such as together forms on the second substrate 107 of touch display panel 10 (described second substrate 107 is shown in Fig. 4) with controlling switch 104.

Referring again to Fig. 3, drive circuit 20 farther includes the first switch element 208 and second switch unit 209.First switch element 208 is arranged between data drive circuit 2033 and described a plurality of data lines 103, is used for controlling whether data drive circuit 2033 electrically connects with described a plurality of data lines 103.First switch element 208 includes multiple first switch K1, and each data wire 103 switchs K1 by one first and is connected to data drive circuit 2033.Second switch unit 209 is arranged between touch-sensing testing circuit 2013 and described a plurality of data lines 103, is used for controlling whether touch-sensing testing circuit 2013 electrically connects with described a plurality of data lines 103.Second switch unit 209 includes multiple second switch K2, and each data wire 103 is connected to described touch-sensing testing circuit 2013 by a second switch K2.

Further, the plurality of first switch K1 and the plurality of second switch K2 such as is controlled to be close also to be off by described control circuit 205.It addition, the first switch element 208 and second switch unit 209 or formation are on touch display panel 10, or formed in the chips.When being formed on touch display panel 10, described first switch element 208, second switch unit 209 such as together form on the second substrate 107 of touch display panel 10 (described second substrate 107 is shown in Fig. 4) with controlling switch 104.

Referring again to Fig. 3, described drive circuit 20 farther includes selection circuit 210.Described selection circuit 210 is connected between described scan drive circuit 2031, described touch-sensing control circuit 2011 and described scanning line 102, is that output scans signal or output touch-sensing control signal to described multi-strip scanning line 102 for selection.

In the present embodiment, described selection circuit 210 includes multiple or door M.Each or door M includes first input end h, the second input i and outfan j.The plurality of or door M first input end h is connected with described scan drive circuit 2031, the plurality of or door M the second input i is used for being connected with the outfan a of described touch-sensing control circuit 2011, and the plurality of or door M outfan j connects one to one with described multi-strip scanning line 102.

The plurality of or door M is such as divided into many groups, and least one set includes at least two or door M, described at least two or the second input i of door M be connected to each other, and be connected to an outfan a.

Changing ground, selection circuit 210 may also comprise the suitable output circuits such as other logic gates, is not limited to described in present embodiment or door M.Separately, similar first switch element 208 is set between described data drive circuit 2033 and described a plurality of data lines 103, second switch unit 209 is set between touch-sensing testing circuit 2013 and described a plurality of data lines 103, also by between scan drive circuit 2031 and scanning line 102, a switch element is set, the mode of another switch element is set between touch-sensing control circuit 2011 and scanning line 102, reach to control respectively to be that scan drive circuit 2031 output scanning signal exports the touch-sensing control signal purpose to scanning line 102 to scanning line 105 or touch-sensing control circuit 2011.Preferably, control circuit 205 is that scan drive circuit 2031 output scanning signal exports touch-sensing control signal to scanning line 102 to scanning line 102 or touch-sensing control circuit 2011 for controlling further.

Further, described selection circuit 210 or formation are on touch display panel 10, or are formed in the chips.When being formed on touch display panel 10, described selection circuit 210 is such as together formed on the second substrate 107 of touch display panel 10 with controlling switch 104.

Refer to the part circuit structure schematic diagram that Figure 11, Figure 11 are touch display unit 1 one embodiment.Figure 11 only illustrates the partial circuit of the data drive circuit 2033 and touch-sensing testing circuit 2013 being connected with one group of data wire 103.Described data drive circuit 2033 includes the first signal processing circuit 240 and multiple output unit 241.Described first signal processing circuit 240 is used for providing gray scale voltage.Each output unit 241 includes the second operational amplifier P2.Described second operational amplifier P2 includes in-phase end e2, end of oppisite phase f2 and outfan g2.Described end of oppisite phase f2 is connected with outfan g2, and described outfan g2 is connected to data wire 103, described in-phase end e2 and the first signal processing circuit 240 by the first switch K1 further and connects, and is used for receiving gray scale voltage.

It addition, each data wire 103 switchs K3 by second switch K2 and the three further is connected to end of oppisite phase f1.

When performing image display and refreshing, second switch K2 and the three switchs K3 and disconnects, the first switch K1 Guan Bi, thus, second operational amplifier P2 electrically connects with data wire 103, and the second operational amplifier P2 exports gray scale voltage by data wire 103 and performs image display refreshing to the first electrode 101.

When performing touch-sensing, second switch K2 first closes and reaches the scheduled time, first electrode 101 short circuit each other of same group；Then Guan Bi is connected to the 3rd switch K3 between each second switch K2 and the first operational amplifier P1 again, when after Guan Bi the 3rd switch K3, such as provide predetermined voltage to be charged to the first electrode 101, then reoffer touch-sensing and drive signal to perform self-capacitance touch-sensing to the first electrode 101.It should be noted that predetermined voltage also can be provided to discharge to the first electrode 101, and and unrestricted simply charging.It addition, the plurality of 3rd switch K3 also can be omitted, correspondingly, aforementioned short circuit the first electrode 101 and provide the step also correspondence of predetermined voltage to be omitted afterwards, so, it is also possible that.

Defining the first electrode 101, to perform stage of self-capacitance touch-sensing be the touch-sensing stage, and defining the first electrode 101, to perform the stage that image display refreshes be the image display refreshing stage.Preferably, the timesharing of described touch display panel 10 realizes described touch-sensing stage and described image display refreshing stage.

Referring again to Fig. 3, the operation principle of described touch display unit 1 is as follows:

Drive circuit 20 is connected by wire as follows with the plurality of first electrode 101: show the refreshing stage at image, the plurality of first electrode 101 is electrically connected to display driver circuit 203, receive the gray scale voltage from display driver circuit 203, refresh in order to perform image display；In the touch-sensing stage, the plurality of first electrode 101 is electrically connected to touch drive circuit 201, receives the touch-sensing from touching drive circuit 201 and drives signal, in order to perform touch-sensing.

Such as, in one embodiment, same first electrode 101 non-concurrent electrical connection touches the touch-sensing testing circuit 2013 in drive circuit 201 and the data drive circuit 2033 in display driver circuit 203.Further, same first electrode 101 touch-sensing control circuit 2011 simultaneously or in the non-concurrent described touch drive circuit 201 of electrical connection and the scan drive circuit 2031 in display driver circuit 203.

Specifically, in a touch-sensing stage, described touch drive circuit 201 provides touch-sensing to drive signal to part the first electrode 101, described part the first electrode 101 is driven to perform self-capacitance touch-sensing, until providing touch-sensing to drive signal by multiple touch-sensing stages being sequentially carried out to all first electrodes 101, all first electrodes 101 are carried out self-capacitance touch-sensing；And

After each touch-sensing stage terminates, described display driver circuit 203 provides the first electrode 101 that gray scale voltage terminates to the touch-sensing stage, drives the first electrode 101 to refresh to perform image display.

The touch-sensing stage such as hocketed with the image display refreshing stage.

When touch display panel 10 performs touch-sensing, described touch drive circuit 201 such as once simultaneously drives at least two row the first electrodes 101 and performs self-capacitance touch-sensing.Further, described touch drive circuit 201 can be simultaneously drive at least two row the first electrodes 101 to perform self-capacitance touch-sensing every time.Wherein, described at least two behavior adjacent lines or different rows, when described at least two behavior different rows, as odd-numbered line or even number line.

It addition, for a touch-sensing stage, described touch drive circuit 201 can be once simultaneously drive multirow the first electrode 101 to perform self-capacitance touch-sensing, it is also possible to be point simultaneously drive multirow the first electrode 101 to perform self-capacitance touch-sensing several times, every time.This situation of self-capacitance is performed for point simultaneously driving multirow the first electrode 101 several times, every time, described the first electrode 101 that the first electrode 101 is sequential driven several times, does not have overlap, so each other, changing ground, the first electrode 101 of adjacent twice driving can also overlap.Additionally, it is possible to once drive a line the first electrode 101 unrestricted at least two row the first electrodes 101.

When touch display panel 10 performs image display refreshing, described display driver circuit 203 is to drive the first electrode 101 to perform image display line by line to refresh.

Further, in one embodiment, described drive circuit 20 touches scanning for the plurality of first electrode 101 carries out interlacing display refresh scan with interlacing, it is achieved image display refreshes and touch-sensing.Thus, described drive circuit 20 is identical with touch-sensing frequency to the display refreshing frequency of described touch display panel 10, for instance, it is 120 hertz (HZ).It should be noted that such as select to do video data by the conversion of progressive-to-interlace in advance in control circuit 205.

In order to become apparent from understanding, sub image that described touch display panel 10 is performed shows that refreshing is as follows with the procedure declaration of touch-sensing as an example:

1. the first electrode 101 has shown；Such as, former frame picture shows complete, starts next frame below；

2. the touch-sensing stage starts in advance, short circuit even number line the 2nd row, the 4th row ..., the 52nd row the first electrode 101, and after short circuit reaches the scheduled time, by the 2nd row, the 4th row ..., the 52nd row the first electrode 101 receive predetermined level；

3. start antithesis several rows the 2nd row, the 4th row ..., the 52nd row the first electrode 101 perform self-capacitance touch-sensing；

4. pair performed the 2nd row of self-capacitance touch-sensing, the 4th row ..., the 52nd row the first electrode 101 display refreshing；

5. next touch-sensing stage starts in advance, short circuit even number line the 54th row, the 56th row ..., the 106th row the first electrode 101, and after short circuit reaches the scheduled time, by the 54th row, the 56th row ..., the 106th row the first electrode 101 receive predetermined level；

6. start antithesis several rows the 54th row, the 56th row ..., the 106th row the first electrode 101 perform self-capacitance touch-sensing；

7. pair performed the 54th row of self-capacitance touch-sensing, the 56th row ..., the 106th row the first electrode 101 display refreshing；

According to above-mentioned steps, the touch-sensing completing the first electrode 101 to all even number lines refreshes with display, it follows that similarly, then the touch-sensing completing the first electrode 101 to all odd-numbered lines refreshes with display.The scanning sequence changing ground, odd-numbered line and even number line can overturn.

So, of the present utility model touch is scanned and shows that refresh scan is not limited to above-mentioned steps, can also be done other change, such as, between the adjacent two touch-sensing stages, after completing the display of the first electrode 101 performing the previous touch-sensing stage is refreshed, it may not be necessary to immediately begin to next touch-sensing stage, after other the first electrode 101 can also being displayed refreshing, then start next touch-sensing stage.

Additionally, it is possible to after the first electrode 101 of all idols (very) several rows is completed self-capacitance touch-sensing, then the first electrode 101 of all even number lines is performed display refresh；Afterwards, to first electrode 101 of odd (idol) several rows perform self-capacitance touch-sensing and refresh with display.

It is further possible to after all first electrodes 101 are completed self-capacitance touch-sensing, then perform display refreshing.

Referring again to Fig. 1, described electronic equipment 100 farther includes main control chip 3, it addition, Figure 10 is also shown for described main control chip 3.Main control chip 3 is connected with touch display unit 1.Described main control chip 3 is for carrying out data communication with described touch display unit 1.Described main control chip 3 is further used for providing supply voltage to described touch display unit 1.Described main control chip 3 can be one chip, it is also possible to be a chipset.When main control chip 3 is chipset, described chipset includes application processor (ApplicationProcessor, AP) and power supply chip.It addition, described chipset can farther include storage chip.Further, described application processor is alternatively central processing unit (CentralProcessingUnit, CPU).

Referring again to Fig. 2, it is to be understood that for multiple first electrodes 101 touching display surface 10, the described touch-sensing stage is that timesharing carries out with the image display refreshing stage, that is, one first electrode 101 is when performing touch-sensing, and another the first electrode 101 non-concurrent performs image display and refreshes.So, it has been observed that when show electrode 11 not all on touch display panel 10 is all as the first electrode 101, the definition in above-mentioned touch-sensing stage with image display refreshing stage is had no effect on by the state being not used in the show electrode 11 as the first electrode 101.In other words, when in the touch-sensing stage, the show electrode 11 being not used as the first electrode 101 can perform image display refreshing.But, for this kind of situation, it is not used as show electrode 11 and the first same data wire 103 of electrode 101 multiplex of the first electrode 101.

Change ground, in some embodiments, one first electrode 101 is when performing touch-sensing, another first electrode 101 also can perform image display simultaneously and refresh, correspondingly, touch display panel 10 needs increase the quantity controlling switch 104, scanning line 102 and data wire 103, electronic equipment 900 as shown in figure 12 further.

Refer to the part-structure schematic diagram that Figure 12, Figure 12 are this utility model another embodiment of electronic equipment.Differring primarily in that of the electronic equipment 100 of electronic equipment 900 and above-mentioned embodiment: the scanning line 902 of the touch display panel 90 of electronic equipment 900 and 902a, data wire 903 and 903a and control the switch 904 quantity with 904a more than the scanning line 102 of the touch display panel 10 of electronic equipment 100, data wire 103 and the quantity controlling switch 104.Especially, the scanning line 902 of the touch display panel 90 of described electronic equipment 900 and 902a, data wire 903 and 903a and control switch 904 twices switching the quantity of 104 with the scanning line 102 of the touch display panel 10 of the electronic equipment 100 of the quantity respectively aforementioned embodiments of 904a, data wire 103 and control, and the quantity of the data wire 903 of the touch display panel 90 of described electronic equipment 900 is preferably identical with the quantity of the transmission ends b of touch-sensing testing circuit (not shown).

Wherein, scanning line 902a, data wire 903a and control switch 904a is newly-increased element.Newly-increased scanning line 902a, newly-increased data wire 903a is connected respectively with newly-increased control switch 904a, and newly-increased control switch 904 is connected with the first electrode 901.Correspondingly, newly-increased scanning line 902a, newly-increased data wire 903a and newly-increased control switch 904a is for working when the first electrode 901 performs touch-sensing, namely, the image display of touch display panel 90 refreshes and touch-sensing multiplexing the first electrode 901, and not multiplexing scans line 902, data wire 903 and controls switch 904.

Due to the change of above-mentioned touch display panel 90 structure, correspondingly, when one first electrode 901 performs touch-sensing, another first electrode 901 can perform image display simultaneously and refresh.Correspondingly, in this embodiment, with image, the touch-sensing stage shows that the refreshing stage can carry out simultaneously or have overlapping on the two time.So, the structure of this embodiment also can realize timesharing and perform touch-sensing stage and image display refreshing stage.

So, this utility model the respective embodiments described above preferred touch-sensing stage carries out with image display refreshing stage timesharing.

Although embodiment is described already in connection with concrete configuration and the sequence of operation here, it should be appreciated that, alternative embodiment can increase, omit or change element, operation etc..Therefore, embodiment disclosed herein is meant to be embodiment rather than restriction.

Claims (11)

1. a touch display unit, including:

Touch display panel, including multiple first electrodes, the plurality of first electrode is the array arrangement of multiple lines and multiple rows；With

Drive circuit, described drive circuit touches scanning for the plurality of first electrode carries out interlaced display scan with interlacing, it is achieved image display refreshes and touch-sensing.

2. touch display unit as claimed in claim 1, it is characterised in that: described drive circuit is for performing self-capacitance touch-sensing to the plurality of first electrode.

3. touch display unit as claimed in claim 2, it is characterised in that: described drive circuit provides gray scale voltage to perform image display refreshing to the plurality of first electrode, it is provided that touch-sensing drives signal to perform self-capacitance touch-sensing to the plurality of first electrode.

4. touch display unit as claimed in claim 3, it is characterized in that: at least two row the first electrodes are once performed touch-sensing by described drive circuit simultaneously, and after described at least two row the first electrodes have been performed touch-sensing, described at least two row the first electrodes are performed image display and refreshes.

5. touch display unit as claimed in claim 4, it is characterised in that: described drive circuit when described at least two row the first electrodes being performed images display and refreshing, scanning a line the first electrode every time.

6. touch display unit as claimed in claim 5, it is characterised in that: at least two row the first electrodes are performed touch-sensing by described drive circuit every time simultaneously.

7. touch display unit as described in any one in claim 1-6, it is characterised in that: described touch display panel farther includes:

Multi-strip scanning line；

A plurality of data lines, arranged in a crossed manner with the insulation of described multi-strip scanning line；With

Multiple control switchs, for being connected respectively with described multi-strip scanning line and a plurality of data lines, wherein, each control switch includes controlling electrode, the first transmission electrode and the second transmission electrode, wherein, controlling electrode to be connected with scanning line, the first transmission electrode is connected with data wire, and the second transmission electrode and the first electrode connect；

Described drive circuit is used for providing touch-sensing control signal to described multi-strip scanning line, activate the control switch being connected with scanning line, and provide touch-sensing to drive signal to described a plurality of data lines, it is transferred to the plurality of first electrode with the control switch passing through to activate, the plurality of first electrode is performed self-capacitance touch-sensing.

8. touch display unit as claimed in claim 7, it is characterized in that: described drive circuit is further used for providing scanning signal to described multi-strip scanning line, activate the control switch being connected with scanning line, and provide gray scale voltage to described a plurality of data lines, it is transferred to the plurality of first electrode with the control switch passing through to activate, the plurality of first electrode is performed image display and refreshes.

9. touch display unit as claimed in claim 8, it is characterised in that: described touch display panel farther includes the second electrode, and described drive circuit also provides for common electric voltage to described second electrode, shows to coordinate the first electrode to perform image；When the first electrode performs touch-sensing, the pressure reduction that described drive circuit is supplied between the common electric voltage of the second electrode and described touch-sensing driving signal remains unchanged.

10. touch display unit as claimed in claim 1, it is characterised in that: the image of described touch display panel is shown that refreshing frequency is identical with touch-sensing frequency by described drive circuit.

11. an electronic equipment, including the touch display unit described in any one in claim 1-10.