CN105353917A

CN105353917A - Touch display device and electronic equipment

Info

Publication number: CN105353917A
Application number: CN201510883511.7A
Authority: CN
Inventors: 贾一锋; 夏涛
Original assignee: Shenzhen Moshi Technology Co Ltd
Current assignee: Shenzhen Moshi Technology Co Ltd
Priority date: 2015-12-03
Filing date: 2015-12-03
Publication date: 2016-02-24

Abstract

The invention provides a touch display device and electronic equipment. The touch display device comprises a touch display panel and a drive circuit. The touch display panel comprises a plurality of first electrodes, and is used for executing image display refresh and touch sensing, defining the phase that the first electrodes execute the image display refresh as an image display refresh phase and defining the phase that the first electrodes execute the touch sensing as a touch sensing phase. The drive circuit comprises a display drive circuit and a touch drive circuit, and the drive circuit is connected with the plurality of first electrodes by leads in the following mode: in the image display refresh phase, at least part of the first electrodes are electrically connected to the display drive circuit, and receive a gray-scale voltage for executing the image display refresh from the display drive circuit; and in the touch sensing phase, at least part of the first electrodes are electrically connected to the touch drive circuit, and receive a touch sensing drive signal for executing self-capacitance touch sensing from the touch drive circuit.

Description

Touch display unit and electronic equipment

Technical field

The present invention relates to and touch display technique field, particularly relate to a kind of touch display unit and electronic equipment.

Background technology

At present, touch-screen is used on various electronic product gradually, becomes user and the mutual important intermediary interface equipment of electronic product.So, existing electronic product normally additionally arranges a touch-screen, is unfavorable for that electronic product is towards lightening future development.

Summary of the invention

The problem that the present invention solves is to provide a kind of more lightening touch display unit and electronic equipment.

Correspondingly, the invention provides a kind of touch display unit, comprising:

Touch display panel, comprise multiple first electrode, for performing image display refreshing and touch-sensing, the stage defining the first electrode execution image display refreshing is the image display refreshing stage, and the stage defining the first electrode execution touch-sensing is the touch-sensing stage; With

Driving circuit, comprise display driver circuit and touch driving circuit, described driving circuit is connected by wire as follows with described multiple first electrode: show the refreshing stage at an image, at least part of first electrode is electrically connected to described display driver circuit, receive the gray scale voltage from display driver circuit, refresh in order to perform image display; In a touch-sensing stage, at least part of first electrode is electrically connected to described touch driving circuit, receives the touch-sensing drive singal from touching driving circuit, in order to perform self-capacitance touch-sensing.

Alternatively, described touch-sensing stage and described image show the timesharing of refreshing stage and carry out.

Alternatively, described driving circuit comprises control circuit further, and described control circuit is electrically connected same first electrode for controlling described display driver circuit with described touch driving circuit non-concurrent.

Alternatively, described driving circuit comprises control circuit further, and described control circuit is electrically connected described multiple first electrode for controlling described display driver circuit with described touch driving circuit non-concurrent.

Alternatively, described driving circuit timesharing provides touch-sensing drive singal and gray scale voltage to described touch display panel.

Alternatively, described touch display panel comprises further:

Multi-strip scanning line;

A plurality of data lines; With

Multiple gauge tap, each gauge tap comprises control electrode, the first transmission electrode and the second transmission electrode, and wherein, control electrode is used for being connected with sweep trace, and the first transmission electrode is used for being connected with data line, and the second transmission electrode is used for and the first Electrode connection.

Alternatively, in the touch-sensing stage, described driving circuit provides touch-sensing control signal to sweep trace, activate the gauge tap be connected with sweep trace, and provide touch-sensing drive singal to the first electrode by the gauge tap of data line and activation, drive the first electrode to perform self-capacitance touch-sensing.

Alternatively, in the image display refreshing stage, described driving circuit provides sweep signal to sweep trace, activates the gauge tap be connected with sweep trace, and provide gray scale voltage to the first electrode by the gauge tap of data line and activation, drive the first electrode to perform image display and refresh.

Alternatively, image shows a plurality of data lines, multi-strip scanning line, multiple gauge tap and multiple first electrode described in refreshing stage and touch-sensing stage time-sharing multiplex.

The present invention also provides a kind of electronic equipment, described electronic equipment comprise above-mentioned in arbitrarily described touch display unit.

The first electrode timesharing due to described touch display unit performs image display and refreshes and touch-sensing, and 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 electronic equipment one embodiment of the present invention.

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

Fig. 3 is the electrical block diagram of the another embodiment of inventive touch display device.

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 the assembling of touch display panel shown in Fig. 4.

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

The structural representation of the embodiment that Figure 10 is the detecting 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 another embodiment of electronic equipment of the present invention.

Embodiment

For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail specific embodiments of the invention below in conjunction with accompanying drawing.But example embodiment can be implemented in a variety of forms, and should not be understood to be limited to embodiment set forth herein; On the contrary, these embodiments are provided to make the present invention comprehensively with complete, and the design of example embodiment will be conveyed to those skilled in the art all sidedly.Conveniently or clear, the thickness of every layer shown in accompanying drawing and size may be exaggerated, omit or be schematically illustrated in and the quantity of related elements is schematically shown.In 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 in different drawings exists and inconsistent situation.Reference numeral identical in the drawings represents same or similar structure.So, it should be noted that, in order to make label, there is regularity and logicality etc., in some different embodiment, same or similar element or structure have employed different Reference numerals, according to relevance and the related text explanation of technology, those skilled in the art can directly or indirectly judge to learn.

In addition, described feature, structure can be combined in one or more embodiment in any suitable manner.In the following description, provide many details thus provide fully understanding embodiments of the present invention.But one of ordinary skill in the art would recognize that, what do not have in described specific detail is one or more, or adopts other structure, constituent element etc., also can put into practice technical scheme of the present invention.In other cases, be not shown specifically or describe known features or operate to avoid fuzzy the present invention.

Further, following term is exemplary, and not intended to be limits by any way.After reading the application, those skilled in the art will recognize that, the statement of these terms is applicable to technology, method, physical component and system (no matter whether knowing at present), comprises those skilled in the art after reading the application and infers or its expansion educible.

In describing the invention, it is to be understood that " multiple " comprise two and two or more, " many " comprise more than two and two, except non-invention separately has clearly concrete restriction." at least two " comprise the multiple situations such as two, three, four, five, and " at least two " comprises the multiple situations such as two, three, four, five.In addition, words such as " first ", " second " that occur in each element title and signal name is not limit the sequencing that element or signal occur, but for convenience of element name, clearly distinguishes each element, makes to 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 comprises again mutual capacitance type touch screen and self-capacitance touch screen.

Based in the touch system of mutual capacitance, touch-screen can comprise (such as) and drive district and sensing area, such as drive wire and sense wire.In an example case, drive wire can form multirow, and sense wire can form multiple row (such as, orthogonal).Touch pixel and can be arranged at row and the point of crossing place arranged.During operation, available alternate signal (AC) waveform encourages described row, and mutual capacitance can be formed between the row of this touch pixel and row.When an object is close to this touch pixel, some electric charges be coupled between the row of this touch pixel and row can change into and being coupled on this object.This minimizing being coupled in the electric charge in this touch pixel can cause the clean minimizing of the mutual capacitance between row and row and be coupled in the minimizing of the AC waveform in this touch pixel.This minimizing of Charged Couple AC waveform can be detected by touch system and measure to judge the position of this object when touching this touch-screen.

Relatively, based in the touch system of self-capacitance, each touches pixel and 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 ground capacitance (capacitancetoground) can be formed between this object and this touch pixel.The net increase of the self-capacitance that this another ground capacitance can cause this touch pixel to stand.This self-capacitance increase can be detected by touch system and measure to judge the position of this object when touching this touch-screen.

Obscuring in order to avoid understanding, needing predeclaredly further to have:

The first, for the first electrode in inventive touch display panel, functionally, the first electrode both can be used as the pixel electrode of image display, can be used as again the sensing electrode of touch-sensing.For the technical scheme on modulation ground, the first electrode also can be public electrode, in the following related embodiment about modulation ground, has related description to this.In addition, the first electrode is not restricted to pixel electrode or public electrode yet, can be other title but the same or analogous electrode of function yet.

The second, for the first electrode for pixel electrode, for single pixel electrode, comprise two kinds of prevailing operating state, be respectively touch-sensing state and image display status.Wherein, for image display status, be subdivided into again two kinds of main display states, be respectively image display Flushing status and image display hold mode.Described image display status is from image display Flushing status, and image display refreshes the complete image that just enters afterwards and shows hold mode, until enter touch-sensing state.

Such as, after one first electrode executes touch-sensing, provide gray scale voltage to perform image display to described first electrode and refresh, after gray scale voltage is written into 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 hold mode, until the first electrode performs touch-sensing next time.In addition, image display refreshing can comprise further and carries out precharge or pre-arcing to the first electrode, reoffer after first electrode of same a line reaches same voltage realize predetermined grey menu gray scale voltage to the first electrode.

Pointing out that image display refreshes and image shows and keeps these two kinds different display states herein, is prepare for better understanding described the embodiments of the present invention below.In addition, clearer and more definite " image display refreshes " and " image shows and keeps " are two kinds of different technological concepts.

Correspondingly, in some embodiments, when requiring that in touch display panel, any 2 first electrode non-concurrent execution images show refreshing with touch-sensing, be the situation that existence 2 first electrode performs image display maintenance and touch-sensing simultaneously.

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

Below, various embodiments of the present invention are described.

Refer to Fig. 1, Fig. 1 is the schematic diagram of electronic equipment one embodiment of the present invention.Described electronic equipment 100 is as being the various proper product such as mobile phone, panel computer, notebook computer, desktop computer, Wearable and Smart Home.The present invention is not restricted this.Described electronic equipment 100 comprises touch display unit 1.Described touch display unit 1 is for realizing image display and touch-sensing.Display device in described touch display unit 1 is such as liquid crystal indicator, that is, described touch display unit is touch liquid crystal display device.Mainly below to be described for touch liquid crystal display device.So, change ground, the display device in described touch display unit 1 also can be the display device of other suitable type, e.g., and display device of electronic paper (EPD) etc.

See also Fig. 2, Fig. 2 is the schematic diagram of the embodiment of touch display unit 1 one shown in Fig. 1.Described touch display unit 1 comprises touch display panel 10 and driving circuit 20.Described driving circuit 20 is connected with described touch display panel 10, performs image display and self-capacitance touch-sensing for driving described touch display panel 10.

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

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

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

A kind of mode of operation is: all show electrode 11 is not only for performing image display 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 for perform image display or touch-sensing be also feasible, in order to more cheer and bright, for the show electrode 11 shown in Fig. 2, be positioned at the extra-regional show electrode of dotted line frame 11 for described first electrode 101, the show electrode 11 show electrode 11 of (on touch display panel 10 last column) being positioned at dotted line frame region then no matter the first electrode 101 be perform image display or when performing touch-sensing, is performing image all always and is showing.

It will be appreciated that, the above is to clearly demonstrate, 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 are not only for performing image display but also for performing self-capacitance touch-sensing, correspondingly, in the description of each embodiment below, all be used as the first electrode 101 for whole show electrode 11 to be described and to illustrate, but, for one of ordinary skill in the art, its various embodiments following according to present specification, easily to expect that not all show electrode 11 is used as other embodiment of 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 described for touch liquid crystal display device, and correspondingly, described show electrode 11 is pixel electrode.The shape approximation rectangle (as shown in Figure 2) of described first electrode 101, so, is not limited to rectangle.The usual scope of the length L of each the first electrode 101 is 20 microns to 300 microns, and the scope of width W is generally 10 microns to 150 microns.It should be noted that, the shape of described first electrode 101 is not generally regular rectangular shape.In addition, the length L of the first electrode 101 and width W also not limit to aforementioned usual scope.

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

Refer to Fig. 3, Fig. 3 is the electrical block diagram of the another embodiment of inventive touch display device 1.Described touch display panel 10 comprises multi-strip scanning line 102, a plurality of data lines 103, multiple gauge tap 104 and the second electrode 105 further.Described multi-strip scanning line 102 insulate arranged in a crossed manner with described a plurality of data lines 103.Described multiple gauge tap 104 is separately positioned on the insulation infall of described multi-strip scanning line 102 and described a plurality of data lines 103.Each gauge tap 104 comprises control electrode G, the first transmission electrode S and the second transmission electrode D.Wherein, described control electrode G connects sweep trace 102, and described first transmission electrode S connection data line 103, described second transmission electrode D connects the first electrode 101.For the formation of electric field between described second electrode 105 and described first electrode 101, to control the transmittance of touch display panel 10.In this enforcement side, 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 the square crossing of described a plurality of data lines 103.Particularly, described multi-strip scanning line 102 all extends along first direction X, arranges each other along second direction Y; Described a plurality of data lines 103 all extends along second direction Y, arranges each other along first direction X.In the present embodiment, described first direction X is line direction, and described second direction Y is column direction.Change ground, in other embodiments, described first direction X also can be column direction, and described second direction Y is line direction.In addition, described first direction X and described second direction Y also can be non-perpendicular.

In the present embodiment, described gauge tap 104 is thin film transistor switch.Described thin film transistor switch comprises 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 being indium oxide 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, change ground, in other embodiments, described gauge tap 104 also can be the switch of other suitable type, e.g., and double pole triode switch.

Described driving circuit 20, for providing touch-sensing control signal to described multi-strip scanning line 102, activates the gauge tap 104 be connected with described multi-strip scanning line 102.In addition, described driving circuit 20 is also for providing described touch-sensing drive singal to described a plurality of data lines 103, described touch-sensing drive singal is transferred to the first electrode 101 by the gauge tap 104 activated, thus, drive described first electrode 101 to perform self-capacitance touch-sensing.

Described touch-sensing drive singal is the voltage signal of change, such as, be periodically variable square-wave pulse signal.So, described touch-sensing drive singal also can be other suitable drive singal such as current signal, is not defined as voltage signal, and in addition, described touch-sensing drive singal also can be nonperiodic signal, and other suitable waveform signal such as sine wave, trapezoidal wave.

In the present embodiment, when touch-sensing, the pressure reduction between described touch-sensing control signal and described touch-sensing drive singal remains unchanged.Correspondingly, described touch-sensing control signal is also the signal of change, and makes gauge tap 104 conducting.

Because described touch display panel 10 is when performing touch-sensing, pressure reduction between described touch-sensing control signal and described touch-sensing drive singal remains unchanged, thus the charge/discharge electricity amount of the stray capacitance formed between control electrode G and the first electrode 101 can be reduced, and then improve touch-sensing precision.

Further, when the first electrode 101 performs touch-sensing, described driving circuit 20 can provide secondary signal to the sweep trace 102 be connected with the first electrode 101 of non-executing touch-sensing further, described secondary signal can make gauge tap 104 be in cut-off state, the pressure reduction between touch-sensing drive singal can also be kept constant simultaneously.

Such as, described secondary signal can be provided to the sweep trace 102 of the first electrode 101 of contiguous execution touch-sensing or all sweep traces 102 be connected with the first electrode 101 of non-executing touch-sensing.Wherein, for the concept of " vicinity ", illustrate, as, 41st the first electrode 101 driven circuit 20 walking to the 80th row drives simultaneously and performs self-capacitance touch-sensing, that the 1st article to the 40th article sweep trace 102 is the sweep trace of the first electrode 101 of contiguous 41st row, and the 81st article to the 120th article sweep trace 102 is the sweep trace of the first electrode 101 of contiguous 80th row.The sweep trace 102 of " vicinity " is such as the sweep trace 102 (with regard to one-sided) within adjoin the first electrode 101 performing touch-sensing 40.So, the number of the sweep trace 102 of described " vicinity " also extends to the sweep trace 102 (with regard to one-sided) within 200.

Described touch-sensing control signal, except the voltage signal for above-mentioned change, changes ground, in other embodiments, also can be constant signal for the touch-sensing control signal activating described gauge tap 104.In addition, touch-sensing control signal also and unrestricted certain and touch-sensing drive singal keeps pressure reduction constant.

Described driving circuit 20 be further used for by activate gauge tap 104 and data line 103 receive from first electrode 101 export touch-sensing detection signal, and know that touch display panel 10 is touched or close position by target object (that is, above-mentioned touch object) according to described touch-sensing detection signal.Described target object, as the position such as finger, toe for user, also can be the object of other suitable type, as felt pen etc., and following main take target object as finger for example is described.The electric capacity defined between described target object and the first electrode 101 is hand capacity (not shown).

When performing touch-sensing, described driving circuit 20 can drive sweep trace 102 line by line, also once can drive at least two sweep traces 102 simultaneously.In one embodiment, such as, drive at least two sweep traces 102 at every turn simultaneously.Described at least two sweep traces 102 are adjacent scanning lines.So, change ground, described at least two sweep traces 102 also can not be adjacent scanning lines, e.g., are other suitable situations such as interlaced line.Further, when sweep trace 102 is scanned or gauge tap 104 is activated, described driving circuit 20 performs self-capacitance touch-sensing to part or all of first electrode 101 be connected with active control switch 104.In other words, described driving circuit 20 provides touch-sensing drive singal to part or all of data line 103.

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

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

Further, described driving circuit 20 is also for providing sweep signal to described multi-strip scanning line 102, activate the gauge tap 104 be connected with described multi-strip scanning line 102, the gray scale voltage that described driving circuit 20 provides is transferred to the first electrode 101 by data line 103 and the gauge tap 104 activated, in addition, described driving circuit 20 also provides common electric voltage to the second electrode 105, thus drives described touch display panel 10 to perform image display refreshing.Wherein, the described sweep signal for active control switch 104 is preferably constant voltage.Pressure reduction between described first electrode 101 and the second electrode 105 is for determining the display gray scale rank of touch display unit 1.

As can be seen from describing above, because inventive touch display device 1 performs touch-sensing function by the described multi-strip scanning line 102 of multiplexing display panel, a plurality of data lines 103, multiple gauge tap 104 and multiple first electrode 101, therefore, touch display unit 1 of the present invention and to have the electronic equipment 100 of described touch display unit 1 more lightening.

Described driving circuit 20 when driving first electrode 101 performs touch-sensing be supplied to the second electrode 105 common electric voltage (or being called " the first signal ") from drive the first electrode 101 perform image show refresh time to be supplied to the common electric voltage of the second electrode 105 different, wherein, described driving circuit 20 when driving first electrode 101 performs touch-sensing the pressure reduction be supplied between the common electric voltage of the second electrode 105 and the touch-sensing drive singal being supplied to the first electrode 101 remain unchanged; Described driving circuit 20 driving first electrode 101 to perform when image display refreshes be supplied to the second electrode 105 common electric voltage can be a constant voltage, so, also can be square-wave signal.

Due to described driving circuit 20 when driving first electrode 101 performs touch-sensing the pressure reduction be supplied between the common electric voltage of the second electrode 105 and the touch-sensing drive singal being supplied to the first electrode 101 remain unchanged, therefore, the capacitive coupling interference that can reduce or avoid the second electrode 105 to bring when the first electrode 101 performs touch-sensing, thus improve touch-sensing precision.

So, change ground, described driving circuit 20 when driving first electrode 101 performs touch-sensing be supplied to the second electrode 105 common electric voltage (or being called " the first signal ") with drive the first electrode 101 perform image show refreshes time institute be supplied to the common electric voltage of the second electrode 105 also can be identical, be sense effect above-mentioned effective comparatively speaking.

Usually, electronic equipment generally includes bright screen duty and blank screen holding state.At blank screen holding state, electronic equipment does not do substantive work usually, and touch display panel presents black, does not have light to pass.Relatively, in bright screen duty, electronic equipment has light to pass touch display panel, and can perform corresponding function.Particularly, bright screen duty can comprise again bright screen screen lock state and bright screen released state.When electronic equipment is in blank screen holding state, user needs the power key or the Home key that first click 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, be no matter power key or Home key after the pressing of a large amount of number of times, may will be malfunctioning, cause the part needing more to renew.In addition, the program step that above-mentioned control electronic equipment is switched to released state from blank screen holding state is slightly aobvious numerous and diverse, and correspondingly, the present inventor proposes the new wake-up mode of electronic equipment by large quantity research correspondence.

At blank screen holding state, touch display unit 1 of the present invention performs touch-sensing function, and when target object touches described touch display panel 10 by predetermined way, described touch display unit 1 wakes up to enter screen lock state or directly enter separates screen state.Wherein, described predetermined way as being specific touch path etc., thus, service property (quality) and the service efficiency of product can be improved, make electronic equipment 100 more humane.

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

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

Further, at blank screen holding state, described driving 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 preferably continues to perform touch-sensing.So, change ground, at blank screen holding state, described driving 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 driving circuit 20 is supplied to the first electrode 101 is identical with the common electric voltage being supplied to the second electrode 105, thus realizes the display of black picture.

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

Refer to Fig. 4, Fig. 4 is the structural representation of the another embodiment of touch display panel 10.Described touch display panel 10 comprises the second substrate 107 that first substrate 106 and first substrate 106 are oppositely arranged and the display medium layer 108 be arranged between described first substrate 106 and second substrate 107 further.In the present embodiment, described display medium layer 108 is liquid crystal layer.Described first substrate 106 is transparency carrier with described second substrate 107, as being glass substrate or film substrate etc.Described multi-strip scanning line 102, a plurality of data lines 103, multiple gauge tap 104, second electrode 105 and described multiple 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 gauge tap 104 and described multiple first electrode 101 are formed on second substrate 107, form array base palte, as thin film transistor (TFT) (TFT) array base palte.In addition, in order to realize coloured image display, at first substrate 106, the element such as colored filter and black matrix" (not shown) being preferably set in the face of the side of described second substrate 107, forming colored filter (CF) substrate.Wherein, described first substrate 106 is used for image display back to the side of described second substrate 107 and receives the touch of user or close input.The side defining the touch or close input that first substrate 106 shows for image and receives user is touch display side A.

Form fringe field between described first electrode 101 and the second electrode 105, to control the deflection angle of liquid crystal molecule, thus control the transmittance of touch display panel 10.In this embodiment, described second electrode 105 is positioned at different layers with described multiple first electrode 101, and with the stacked setting of described multiple first electrode 101.Further, described second electrode 105 is between described display medium layer 108 and described multiple first electrode 101.Wherein, described second electrode 105 is provided with engraved structure 115 in the region of corresponding first electrode 101, to make to form fringe field between described second electrode 105 and described multiple first electrode 101.

See 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 along third direction arrangement, 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, the present invention 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.Described multiple engraved structure 115 is such as bar shaped, and so, described multiple engraved structure 115 also can be other suitable shape, and the present invention does not limit this.Again such as, the size and shape of described multiple engraved structure 115 is identical, so, changes ground, and the size and shape of described multiple engraved structure 115 also can be different.

In the direction of arranging along described multiple 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 (region of even oblique line is beaten to the region 113 between the adjacent engraved structure 115 of same first electrode 101, to distinguish engraved structure 115) area A 2 be preferably less than or equal to the area A 1 of an engraved structure 115, wherein, the edge in the region 113 between described adjacent engraved structure 115 does not exceed the edge of engraved structure 115.Correspondingly, the capacitive coupling area between described first electrode 101 and target object is large to straining, and then can improve touch-sensing precision.

Refer to Fig. 6, Fig. 6 is the cut-away section structural representation of the another embodiment of touch display panel described in Fig. 4 10.For the touch display panel shown in the touch display panel 10, Fig. 6 described in difference Fig. 4 is denoted as 10a, in described touch display panel 10a, adopt identical label with same or similar element in described touch display panel 10.Described touch display panel 10a is substantially identical with described touch display panel 10, and the key distinction of the two is: described second electrode 105 is arranged between the first electrode 101 and second substrate 107; In addition, display medium layer 108 and first substrate 106 is omitted.

Because the first electrode 101 is arranged on the second electrode 105, therefore, correspondence can be done the first electrode 101 greatly relatively, thus improves with target object or touch the capacity area that object is coupled, and then, raising touch-sensing precision.

When described second electrode 105 is arranged between the first electrode 101 and second substrate 107, described second electrode 105 can not arrange engraved structure 115.So, in order to improve edge electric field strength, can select correspondence on the first electrode 101 that engraved structure 115 as above is set.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 all can not arrange engraved structure.

See 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.Also domain of the existence 113 between adjacent engraved structure 115 on same first electrode 101.Correspondingly, multiple engraved structures 115 on same first electrode 101: the direction of arranging along described multiple engraved structure 115, 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 A 2 in the region 113 between adjacent engraved structure 115 is preferably greater than or equal to the area A 1 of an engraved structure 115, wherein, the edge in the region 113 between described adjacent engraved structure 115 does not exceed the edge of engraved structure 115.Correspondingly, the capacitive coupling area between described first electrode 101 and target object is large to straining, and then can improve touch-sensing precision.

It should be noted that, be no matter described second electrode 105 to be arranged on described first electrode 101 or under, between this two classes electrode, insulation course (sign) is all set.

In addition, the present invention does not limit between described first electrode 101 and the second electrode 105 and forms fringe field, changes ground, can form vertical electric field between described second electrode 105 and described first electrode 101 yet.Correspondingly, described second electrode 105 is arranged between first substrate 106 and display medium layer 108, and it is also feasible that second substrate 107 is used as above-mentioned touch display side A back to the side of described first substrate 106.In addition, described multiple first electrode 101 also can be positioned at same layer with described second electrode 105, equally also can form fringe field.

Because data line 103 and gauge tap 104 are for transmitting touch-sensing drive singal to described first electrode 101, therefore, when target object touch respective data lines 103 on touch display panel 10 or/and the position of gauge tap 104 time, thus, the precision of false sensing or the real sensing of impact can be caused.

Correspondingly, in order to overcome foregoing problems, in described touch display panel 10, screen layer can be set further, described screen layer between described first substrate 106 and data line 103 and gauge tap 104, for covering described data line 103 and gauge tap 104.Described driving circuit 20 provides shielded signal to described screen layer.Pressure reduction between described shielded signal and described touch-sensing drive singal remains unchanged, thus avoids data line 103 and gauge tap 104 on the impact of the sensing precision of the first electrode 101.Certainly, described screen layer one of also only can to cover in described data line 103 and this two class component of gauge tap 104 class component, and correspondence also can solve the problem to a certain extent, and and not necessarily limit and cover this two class component, preferably, at least cover data line 103.

It should be noted that, described screen layer can be structure as a whole, and also can be Split type structure.When screen layer is Split type structure, described screen layer comprises the first guarded electrode and secondary shielding electrode, and wherein, described first guarded electrode partially or completely covers described data line 103, described secondary shielding electrode part or cover described gauge tap 104 completely.

Further, owing to there is stray capacitance between described sweep trace 102 and described first electrode 101, therefore, when target object touches the position of corresponding sweep trace 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 sweep trace 102, or described screen layer comprises the 4th guarded electrode further, and described 4th guarded electrode partially or completely covers described sweep trace 102.Preferably, described screen layer covers described multi-strip scanning line 102, a plurality of data lines 103 and multiple gauge tap 104 completely.

When additionally arranging screen layer, though can solve the technical matters of sensing precision step-down, but in a disguised form can increase the thickness of touch display panel 10, therefore, the present invention proposes to select multiplexing second electrode 105 as described screen layer.

See also Fig. 8 and Fig. 4, Fig. 8 is the structural representation after the assembling of touch display panel 10 shown in Fig. 4.Adjacent two pleurapophysis of described second substrate 107 for described first substrate 106, for edge cabling.Different according to the size of touch display panel 10, such as undersized touch display panel, described second substrate 107 also only can protrude from described first substrate 106 in side.Described first substrate 106 is defined as with the described equitant region of second substrate 107 and touches viewing area T, and the region that second substrate 107 protrudes from described first substrate 106 is defined as marginarium H.Described second electrode 105 such as cover completely be positioned at the data line 103 of described touch viewing area T, sweep trace 102, gauge tap 104.

At described marginarium H, the first connecting line 109, second connecting line 110 and the 3rd guarded electrode 111 are set further.Described first connecting line 109 is for connecting described data line 103 to described driving circuit 20 (see Fig. 3).It should be noted that, Fig. 3 eliminates described first connecting line 109, second connecting line 110 and the 3rd guarded electrode 111.Described second connecting line 110 is for connecting described sweep trace 102 to described driving circuit 20 (see Fig. 3).Described first connecting line 109 and described second connecting line 110 are between described 3rd guarded electrode 111 and described second substrate 107.Described driving circuit 20 is for providing shielded signal to described 3rd guarded electrode 111.Thus, the impact on touch-sensing precision when avoiding target object to touch the marginarium H of electronic equipment 100.Preferably, the pressure reduction between described shielded signal and described touch-sensing drive singal remains unchanged.

It should be noted that, also need to arrange insulation course between described 3rd guarded electrode 111 and described first connecting line 109, described second connecting line 110.

Referring again to Fig. 3, described driving circuit 20 comprises touch driving circuit 201, display driver circuit 203 and public voltage generating circuit 207.Wherein, described touch driving circuit 201 is connected respectively with sweep trace 102 and data line 103, for providing touch-sensing control signal to sweep trace 102, also for providing touch-sensing drive singal to the first electrode 101 by data line 103 and gauge tap 104, the first electrode 101 is driven to perform self-capacitance touch-sensing.Described display driver circuit 203 is connected respectively with sweep trace 102 and data line 103, for providing sweep signal to sweep trace 102, for providing gray scale voltage to the first electrode 101 by data line 103 and gauge tap 104, described public voltage generating circuit 207, also for providing the first common electric voltage to the second electrode 105, performing image display and refreshing.

Described driving circuit 20 comprises control circuit 205 further.Described control circuit 205 is connected respectively with described touch driving circuit 201 and described display driver circuit 203, for controlling to be that described touch driving circuit 201 exports touch-sensing control signal and touch-sensing drive singal and exports sweep signal and gray scale voltage to described touch display panel 10 to described touch display panel 10 or described display driver circuit 203.In addition, described control circuit 205 also for control described driving 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 driving circuit 20 is when the first electrode 101 performs image display refreshing with touch-sensing, and the common electric voltage being supplied to the second electrode 105 also can be identical.

Preferably, described touch driving circuit 201 comprises 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, for providing touch-sensing control signal to described multi-strip scanning line 102, activates the gauge tap 104 be connected with sweep trace 102.Described touch-sensing testing circuit 2013 is connected with described a plurality of data lines 103, for providing touch-sensing drive singal to the first electrode 101 by the gauge tap 104 of data line 103 and activation, drives the first electrode 101 to perform self-capacitance touch-sensing.Described touch-sensing testing circuit 2013 receives with data line 103 the touch-sensing detection signal exported from the first electrode 101 further by the gauge tap 104 activated, and knows that touch display panel 10 is touched or close position 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 and gauge tap 104 are such as together formed in (described second substrate 107 is shown in Fig. 4) on the second substrate 107 of touch display panel 10.

Described display driver circuit 203 comprises scan drive circuit 2031 and data drive circuit 2033.Described scan drive circuit 2031 is connected with described multi-strip scanning line 102, for providing sweep signal to described multi-strip scanning line 102, activates the gauge tap 104 be connected with sweep trace 102.Described data drive circuit 2033 is connected with described a plurality of data lines 103, for providing gray scale voltage to described multiple first electrode 101 by the gauge tap 104 of data line 103 and activation, driving described multiple first electrode 101 to perform image display and refreshing.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 and gauge tap 104 are preferably together formed in (described second substrate 107 is shown in Fig. 4) on the second substrate 107 of touch display panel 10.

It should be noted that, shown in Fig. 3 is that touch-sensing testing circuit 2013 is positioned at the relative both sides of touch display panel 10 with data drive circuit 2033, be connected with the opposite end of data line 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 line 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 with the opposite end of data line 103 by element annexation correspondence.

Preferably, described driving circuit 20 comprises public voltage generating circuit 207 further.Described public voltage generating circuit 207 is connected with described control circuit 205, for generation of 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.

Particularly, 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, described touch-sensing control circuit 2011 comprises multiple output terminal a.Each output terminal a connects at least two sweep traces 102.Described touch-sensing control circuit 2011 exports touch-sensing control signal at least two sweep traces 102 by each output terminal a simultaneously, activates the gauge tap 104 be connected with described at least two sweep traces 102.Change ground, the output terminal a of described touch-sensing control circuit 2011 also can connect a sweep trace 102.Wherein, touch-sensing control circuit 2011 once exports touch-sensing control signal at least two sweep traces 102 by an output terminal a, in addition, also once can export touch-sensing control signal to multi-strip scanning line 102 by multiple output terminal a, the present invention does not limit this simultaneously.

Described touch-sensing testing circuit 2013 comprises multiple transmission ends b.Preferably, transmission ends b connects at least two data lines 103.Described touch-sensing testing circuit 2013 exports touch-sensing drive singal to described at least two data lines 103 by described transmission ends b, and is received the touch-sensing detection signal exported from described at least two data lines 103 by described transmission ends b.Change ground, the transmission ends b of described touch-sensing testing circuit 2013 also can connect a data line 103.Described at least two data lines 103 are such as adjacent data line.So, described at least two data lines 103 also can be non-conterminous data line, e.g., for every other appropriate circumstances such as column data lines.

Can find out, when performing touch-sensing, described multiple first electrode 101 is divided into many groups, forms one group, be connected in parallel into a touch-sensing electrode with multiple first electrodes 101 that same output terminal a is connected with same transmission ends b.Preferably, be in parallel the first electrode 101 arrangement in matrix form connected.The touch-sensing electrode pair that multiple first electrodes 101 of same group are connected in parallel should limit a touch point on touch display panel 10, described touch point is such as long and the wide square area being 1mm, but the application is not as limit, described touch point also can be long and the wide rectangular area being respectively other size, correspondingly, the increasing number of the first electrode 101 or minimizing, or the size of the first electrode 101 own has corresponding change.One group is only had to the situation of first electrode 101, this group is the corresponding touch point limited on touch display panel 10 too.As previously mentioned, 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 output terminal a connects at least two sweep traces 102, and fractional transmission end b connects at least two data lines 103 respectively, and fractional transmission end b connects a data line 103 respectively.Change ground, in other embodiments, also can be fractional transmission end b and connect at least two data lines 103 respectively, fractional transmission end b connects a data line 103 respectively; Part output terminal a connects at least two sweep traces 102 respectively, and part output terminal a connects scan line 102 respectively.Correspondingly, described multiple first electrode 101 is divided into many groups, and at least one group comprises at least two the first electrodes 101 be connected in parallel, and at least one group comprises one first electrode 101.

Alternatively, the number that the sweep trace 102 being positioned at touch display panel 10 edge is connected with an output terminal a is less than the number being positioned at the sweep trace 102 in the middle part of touch display panel 10 and being connected with another output terminal a; And/or the number that the data line 103 being positioned at touch display panel 10 edge is connected with a transmission ends b is less than the number being positioned at the data line 103 in the middle part of touch display panel 10 and being connected with another transmission ends b.Correspondingly, the edge touch-sensing precision of described touch display panel 10 is improved.

The touch point being positioned at touch display panel 10 central region is such as long and the wide square area being 1mm, the touch point being positioned at touch display panel 10 fringe region is such as long and the wide square area being 0.5mm, but the present invention is not as limit, the touch point on described touch display panel 10 also can be long and the wide rectangular area being respectively other size.

Accordingly, such as, the number of the sweep trace 102 that the output terminal a be connected with the sweep trace 102 being positioned at touch display panel 10 edge is connected is 10 to 20, and the number of the sweep trace 102 that the output terminal a be connected with the sweep trace 102 be positioned in the middle part of touch display panel 10 is connected is 25 to 45; The number of the data line 103 that the transmission ends b be connected with the data line 103 being positioned at touch display panel 10 edge is connected is 25 to 35, and the number of the data line 103 that the transmission ends b be connected with the data line 103 be positioned in the middle part of touch display panel 10 is connected is 40 to 60.Thus, improve edge touch-sensing precision.So, for amorphous silicon display panels and low temperature polycrystalline silicon display panels, or, for the touch display panel 10 of different size, may be different from the number scope of the sweep trace 102 that the output terminal a that the sweep trace 102 being positioned at touch display panel 10 edge is connected connects, also may be different from the number scope of the sweep trace 102 that the output terminal a that the sweep trace 102 be positioned in the middle part of touch display panel 10 is connected connects, similarly, number scope for the data line 103 be connected from transmission ends b also may be different, therefore, the present invention does not limit this, just example explanation.

So, in other embodiments, the quantity of the sweep trace 102 that each output terminal a connects can be identical, and the quantity of the data line 103 that each transmission ends b connects can be identical.Such as, each output terminal a connects 25 to 45 sweep traces 102, and each transmission ends b connects 40 to 60 data lines 103.Thus, improve touch-sensing precision.So, for amorphous silicon display panels and low temperature polycrystalline silicon display panels, or, for the touch display panel 10 of different size, may be different from the number scope of the sweep trace 102 that output terminal a connects, similarly, number scope for the data line 103 be connected from transmission ends b also may be different, therefore, the present invention does not limit this, just example explanation.

In addition, export touch-sensing control signal to the effect of at least two sweep traces 102 except reaching above by the mode of the connection number arranging output terminal a and sweep trace 102 simultaneously, but also each output terminal a only connects a sweep trace 102, arranged by software or mode that software and hardware combine, make described touch-sensing control circuit 2011 once or each touch-sensing control signal that simultaneously exports at least two sweep traces 102, and not restricted passage sets the mode that an output terminal a connects at least two sweep traces 102 and realizes.Similarly, but also each data line 103 only connects a transmission ends b, arranged by software or mode that software and hardware combine, make described touch-sensing testing circuit 2013 carry out grouping and calculate to receiving touch-sensing detection signal and be also fine, and not restricted passage set the mode that a transmission ends b connects at least two data lines 103 and realize.

It should be noted that, when performing touch-sensing, described multiple 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, be connected in parallel for non-between described multiple first electrode 101.

Because multiple first electrodes 101 of described touch display unit 1 are divided into many groups, described driving circuit 20 drives first electrode 101 of each group to perform self-capacitance touch-sensing, and therefore, described touch display unit 1 can realize true multiple spot self-capacitance touch-sensing.In addition, different by the first electrode 101 quantity arranging different group, thus correspondence arranges the touch-sensing precision of diverse location on touch display panel 10.

See also Fig. 9 and Fig. 3, Fig. 9 is the structural representation of the testing circuit of touch-sensing shown in Fig. 3 2013.Described touch-sensing testing circuit 2013 comprises multiple touch-sensing detecting unit 232, secondary signal treatment circuit 233 and multiple processing unit 235.Each touch-sensing detecting unit 232 is connected respectively with secondary signal treatment circuit 233 and a processing unit 235.Described multiple touch-sensing detecting unit 232 connects one to one with described multiple transmission ends b further, or each touch-sensing detecting unit 232 described comprises the node that is used as described transmission ends b respectively.

It should be noted that, in the present embodiment, described touch-sensing testing circuit 2013 comprises a secondary signal treatment circuit 233, and all touch-sensing detecting units 232 share a secondary signal treatment circuit 233.Change ground, in other embodiments, described touch-sensing testing circuit 2013 also can comprise multiple secondary signal treatment circuit 233, and part touch-sensing detecting unit 232 shares a secondary signal treatment circuit 233.In addition, also and each touch-sensing detecting unit 232 non-limiting individually connects a processing unit 235, may also be several touch-sensing detecting unit 232 time-sharing multiplex one processing unit 235.

Described secondary signal treatment circuit 233 is for exporting touch-sensing drive singal to described touch-sensing detecting unit 232.Described touch-sensing detecting unit 232, for exporting touch-sensing drive singal to data line 103, to export to the first electrode 101 further by the gauge tap 104 activated, performs self-capacitance touch-sensing to the first electrode 101.

Described touch-sensing detecting unit 232 receives the touch-sensing detection signal exported from the first electrode 101 further, after carrying out respective handling to described touch-sensing detection signal, (voltage waveform as touch-sensing detection signal is changed, or be voltage swing conversion, 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.Described processing unit 235 is further processed (as analog to digital conversion) the input signal from touch-sensing detecting unit 232, and calculates acquisition touch coordinate.

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

When performing touch and detecting, described first operational amplifier P1 is in empty short status, the touch-sensing drive singal that described secondary signal treatment circuit 233 exports exports to data line 103 by in-phase end e1 and end of oppisite phase f1, and then export to the first electrode 101 by the gauge tap 104 activated, drive the first electrode 101 to perform self-capacitance touch-sensing.When there being finger touch the first electrode 101, first electrode 101 exports corresponding touch-sensing detection signal to end of oppisite phase f1 by data line 103, described touch-sensing detection signal, through the charge conversion of feedback capacity Cf or process, correspondingly produces the signal relevant to touch-sensing detection signal at output terminal g1.Wherein, the magnitude relationship between feedback capacity Cf and described hand capacity determines the changes in amplitude size of the signal produced at output terminal g1.

Described processing unit 235 comprises analog to digital signal conversion unit 2351 and computing unit 2355.Described analog to digital signal conversion unit 2351 carries out analog to digital conversion to the signal that the output terminal g1 from touch-sensing detecting unit 232 exports, 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, represents that the signal of touch coordinate is to main control chip 3 for exporting.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, touch-sensing detecting unit shown in Figure 10 232 and processing unit 235 for the structure of one embodiment of the invention and and unrestricted, change ground, in other embodiments, described touch-sensing detecting unit 232 also can be other suitable structure with processing unit 235.Such as, touch-sensing testing circuit 2013 (specific to as described in touch-sensing detecting unit 232 with as described in processing unit 235) in increase corresponding circuit module or clipped circuit module is also fine, or, adopt other circuit module or circuit unit also to realize identical function and be fine equally.Particularly, as, between analog to digital signal conversion unit 2351 and output terminal g1, comprise filter unit further, the signal of described filter unit after carrying out filtering process to the signal that output terminal g1 exports again after output filtering is to analog to digital signal conversion unit 2351.

Again such as, level conversion unit can be set further between described computing unit 2355 and described analog to digital signal conversion unit 2351, the digital signal that described level conversion unit is used for described analog to digital signal conversion unit 2351 exports carries out level conversion, 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 will represent that the signal of touch coordinate exports to level conversion unit, after described level conversion unit carries out level conversion to the signal receiving expression touch coordinate, export to described main control chip 3 again, also be so possible, need to determine according to the withstand voltage situation of computing unit 2355 with analog to digital signal conversion unit 2351.

Referring again to Fig. 3, usually, described driving circuit 20 comprises Graphics Processing circuit and described level conversion unit further, described Graphics Processing circuit is used for carrying out relevant treatment (as storage, decompression, color conversion etc.) to the display data from main control chip 3, and the display data after process are exported to data drive circuit 2033 by control circuit 205.Described data drive circuit 2033 changes described display data into corresponding gray scale voltage.Described level shifting circuit is used for carrying out level conversion to some signal in described driving circuit 20, such as, except carrying out except level conversion to the signal of the expression touch coordinate that computing unit 2355 exports, also level conversion may be carried out to the display data that Graphics Processing circuit exports, again output level conversion after display data to control circuit 205, with the request signal transmission between satisfied different voltage holding circuit device.Described display data are preferably digital signal.

Referring again to Figure 10 and Fig. 9, described touch-sensing testing circuit 2013 can comprise the 3rd K switch 3 further, and described 3rd K switch 3 is connected between transmission ends b and touch-sensing detecting unit 232.

Described touch-sensing control circuit 2011 provide touch-sensing control signal to sweep trace 102 after, providing before touch-sensing drive singal performs self-capacitance touch-sensing to the first electrode 101, described driving circuit 201 controls the 3rd K switch 3 further and disconnects, and reaches a schedule time to make the first short circuit of the first electrode 101 be connected with same touch-sensing detecting unit 232.

Described driving circuit 20 is after described 3rd K switch 3 disconnection of control reaches the described schedule time, control the 3rd K switch 3 again to close, 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 to perform self-capacitance touch-sensing to described first electrode 101.Thus, the effect reducing power consumption can be reached.

Change ground, after described first electrode 101 short circuit reaches a schedule time, also can omit the aforementioned predetermined voltage that provides to the step of the first electrode 101 of phase short circuit, but directly provide touch-sensing drive singal to perform self-capacitance touch-sensing to the first electrode 101.

Such as, described control circuit 205 is for controlling the closed of the 3rd K switch 3 and disconnecting.In addition, described 3rd K switch 3 or be formed on touch display panel 10, or formed in the chips.When being formed on touch display panel 10, described 3rd K switch 3 is such as together formed in (described second substrate 107 is shown in Fig. 4) on the second substrate 107 of touch display panel 10 with gauge tap 104.

Referring again to Fig. 3, described driving circuit 20 comprises the first switch element 208 and second switch unit 209 further.Whether described first switch element 208 is arranged between described data drive circuit 2033 and described a plurality of data lines 103, be electrically connected with described a plurality of data lines 103 for controlling described data drive circuit 2033.Described first switch element 208 comprises multiple first K switch 1, and each data line 103 is connected to described data drive circuit 2033 by one first K switch 1.Whether described second switch unit 209 is arranged between described touch-sensing testing circuit 2013 and described a plurality of data lines 103, be electrically connected with described a plurality of data lines 103 for controlling described touch-sensing testing circuit 2013.Described second switch unit 209 comprises multiple second switch K2, and each data line 103 is connected to described touch-sensing testing circuit 2013 by a second switch K2.

Further, described multiple first K switch 1 such as controls to be close or disconnect by described control circuit 205 with described multiple second switch K2.In addition, the first switch element 208 is with second switch unit 209 or be formed on touch display panel 10, or is formed in the chips.When being formed on touch display panel 10, described first switch element 208, second switch unit 209 are such as together formed in (described second substrate 107 is shown in Fig. 4) on the second substrate 107 of touch display panel 10 with gauge tap 104.

Referring again to Fig. 3, described driving circuit 20 comprises selection circuit 210 further.Described selection circuit 210 is connected to described scan drive circuit 2031, between described touch-sensing control circuit 2011 and described sweep trace 102, is export sweep signal or export touch-sensing control signal to described multi-strip scanning line 102 for selection.

In the present embodiment, described selection circuit 210 comprises multiple or door M.Each or door M comprise first input end h, the second input end i and output terminal j.Described first input end h that is multiple or door M is connected with described scan drive circuit 2031, the second input end i of described multiple or door M is used for being connected with the output terminal a of described touch-sensing control circuit 2011, and output terminal j and the described multi-strip scanning line 102 of described multiple or door M connect one to one.

Described multiple or door M is such as divided into many groups, and at least one group comprises at least two or door M, described at least two or the second input end i of door M be connected to each other, and be connected to an output terminal a.

Change ground, described selection circuit 210 also can comprise the suitable output circuits such as other logic gates, is not limited to described in present embodiment or door M.In addition, 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 arranging a switch element between scan drive circuit 2031 and sweep trace 102, the mode of another switch element is set between touch-sensing control circuit 2011 and sweep trace 102, reach and control respectively to be that scan drive circuit 2031 exports sweep signal and exports touch-sensing control signal to the object of sweep trace 102 to sweep trace 105 or touch-sensing control circuit 2011.Preferably, described control circuit 205 is for controlling further to be that scan drive circuit 2031 exports sweep signal and exports touch-sensing control signal to sweep trace 102 to sweep trace 102 or touch-sensing control circuit 2011.

Further, described selection circuit 210 or be formed on touch display panel 10, or 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 gauge tap 104.

Refer to Figure 11, Figure 11 is the part circuit structure schematic diagram of touch display unit 1 one embodiment.The partial circuit of the data drive circuit 2033 and touch-sensing testing circuit 2013 be connected with one group of data line 103 is only shown in Figure 11.Described data drive circuit 2033 comprises the first signal processing circuit 240 and multiple output unit 241.Described first signal processing circuit 240 is for providing gray scale voltage.Each output unit 241 comprises the second operational amplifier P2.Described second operational amplifier P2 comprises in-phase end e2, end of oppisite phase f2 and output terminal g2.Described end of oppisite phase f2 is connected with output terminal g2, and described output terminal g2 is connected to data line 103 further by the first K switch 1, and described in-phase end e2 is connected with the first signal processing circuit 240, for receiving gray scale voltage.

In addition, each data line 103 is connected to the end of oppisite phase f1 of the first operational amplifier P1 further by second switch K2 and the 3rd K switch 3.

When performing image display and refreshing, second switch K2 and the 3rd K switch 3 disconnect, and the first K switch 1 closes, thus, second operational amplifier P2 is electrically connected with data line 103, and the second operational amplifier P2 exports gray scale voltage by data line 103 and performs image display refreshing to the first electrode 101.

When performing touch-sensing, second switch K2 is first closed reaches the schedule time, the first electrode 101 short circuit each other of same group; And then closed the 3rd K switch 3 be connected between each second switch K2 and the first operational amplifier P1, when after closed 3rd K switch 3, such as provide predetermined voltage to charge to the first electrode 101, and then provide touch-sensing drive singal 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 just charging.In addition, described multiple 3rd K switch 3 also can be omitted, correspondingly, aforementioned short circuit first electrode 101 and provide afterwards the step of predetermined voltage also correspondence be omitted, so, be also fine.

Defining the stage that the first electrode 101 performs self-capacitance touch-sensing is 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 the described touch-sensing stage and described image shows the refreshing stage.

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

Described driving circuit 20 is connected by wire as follows with described multiple first electrode 101: show the refreshing stage at image, described multiple first electrode 101 is electrically connected to described 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, described multiple first electrode 101 is electrically connected to described touch driving circuit 201, receives the touch-sensing drive singal from touching driving circuit 201, in order to perform self-capacitance touch-sensing.

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

Particularly, in a touch-sensing stage, described touch driving circuit 201 provides touch-sensing drive singal to part first electrode 101, described part first electrode 101 is driven to perform self-capacitance touch-sensing, until provide touch-sensing drive singal by multiple touch-sensing stage of carrying out successively to all first electrodes 101, self-capacitance touch-sensing is carried out to all first electrodes 101; And

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

Touch-sensing stage and image show the refreshing stage and such as hocket.

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

In addition, for a touch-sensing stage, described touch driving circuit 201 can be once drive multirow first electrode 101 to perform self-capacitance touch-sensing simultaneously, also can be point several times, each multirow first electrode 101 that simultaneously drives performs self-capacitance touch-sensing.For dividing several times, drive multirow first electrode 101 to perform this situation of self-capacitance at every turn simultaneously, described the first electrode 101 driven several times is the first electrode 101 of sequential, does not have overlap each other, so, change ground, the first electrode 101 of adjacent twice driving also can overlap.In addition, also once can drive a line first electrode 101, not restriction at least two row first electrodes 101.

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

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

In order to more cheer and bright, the procedure declaration performing image display refreshing and touch-sensing to described touch display panel 10 for an example is as follows:

1. the first electrode 101 has shown; Such as, the display of former frame picture is 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 schedule time, by the 2nd row, the 4th row ..., the 52nd row the first electrode 101 receive predetermined level;

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

4. pair to execute the 2nd row of self-capacitance touch-sensing, the 4th row ..., the 52nd row the first electrode 101 carry out display refresh;

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 schedule time, by the 54th row, the 56th row ..., the 106th row the first electrode 101 receive predetermined level;

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

7. pair to execute the 54th row of self-capacitance touch-sensing, the 56th row ..., the 106th row the first electrode 101 carry out display refresh;

According to above-mentioned steps, complete and the touch-sensing of the first electrode 101 of all even number lines and display are refreshed, next, similarly, then complete the touch-sensing of the first electrode 101 of all odd-numbered lines is refreshed with showing.

Change ground, the scanning sequence of odd-numbered line and even number line can be put upside down.

So, touch scanning of the present invention is not limited to above-mentioned steps with display refresh scan, also can do other to change, such as, between the adjacent two touch-sensing stages, after completing the display refreshing to the first electrode 101 performing the last touch-sensing stage, next touch-sensing stage can be started immediately, also after can carrying out display refreshing to other the first electrode 101, then next touch-sensing stage is started.

In addition, after also can completing self-capacitance touch-sensing to the first electrode 101 of all idols (very) number row, then display refreshing is performed to the first electrode 101 of all even number lines; Afterwards, to odd (idol) number row first electrode 101 perform self-capacitance touch-sensing with display refresh.

Further, after also can completing self-capacitance touch-sensing to all first electrodes 101, then perform display refreshing.

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

Referring again to Fig. 2, it is to be appreciated that for multiple first electrodes 101 touching display surface 10, it is that timesharing is carried out that described touch-sensing stage and image show the 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, as aforementioned, when show electrode 11 not all on touch display panel 10 is all as the first electrode 101, the state be not used in as the show electrode 11 of the first electrode 101 shows the definition in refreshing stage to above-mentioned touch-sensing stage and image not to be affected.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 and refresh.But, for this kind of situation, be not used as show electrode 11 and the same data line 103 of the first 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 to increase further gauge tap 104, sweep trace 102, quantity with data line 103, electronic equipment 900 as shown in figure 12.

Refer to Figure 12, Figure 12 is the part-structure schematic diagram of another embodiment of electronic equipment of the present invention.Described electronic equipment 900 is with the key distinction of the electronic equipment 100 of above-mentioned embodiment: the quantity of the sweep trace 902 of the touch display panel 90 of described electronic equipment 900 and 902a, data line 903 and 903a and gauge tap 904 and 904a is more than the quantity of the sweep trace 102 of the touch display panel 10 of the electronic equipment 100 of aforementioned embodiments, data line 103 and gauge tap 104.Especially, the sweep trace 902 of the touch display panel 90 of described electronic equipment 900 and 902a, data line 903 and 903a and gauge tap 904 and the quantity of 904a are respectively the twice of the quantity of the sweep trace 102 of the touch display panel 10 of the electronic equipment 100 of aforementioned embodiments, data line 103 and gauge tap 104, and the quantity of the data line 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, sweep trace 902a, data line 903a and gauge tap 904a are newly-increased element.Newly-increased sweep trace 902a, newly-increased data line 903a are connected respectively with newly-increased gauge tap 904a, and newly-increased gauge tap 904 is connected with the first electrode 901.Correspondingly, newly-increased sweep trace 902a, newly-increased data line 903a and newly-increased gauge tap 904a are used for working when the first electrode 901 performs touch-sensing, namely, the image display of touch display panel 90 refreshes and multiplexing first electrode 901 of touch-sensing, and not multiplexing sweep trace 902, data line 903 and gauge tap 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, touch-sensing stage and image show the refreshing stage and can carry out simultaneously or the two time have overlapping.So, the structure of this embodiment also can realize timesharing and performs touch-sensing stage and image and show the refreshing stage.

So, the respective embodiments described above of the present invention preferred touch-sensing stage and image show the timesharing of refreshing stage and carry out.

Although embodiment is described about concrete configuration and the sequence of operation here, should be appreciated that, the embodiment substituted can increase, omits or change element, operation etc.Therefore, embodiment disclosed herein is meant to be embodiment instead of restriction.

Claims

1. a touch display unit, comprising:

2. touch display unit as claimed in claim 1, is characterized in that: described touch-sensing stage and described image show the timesharing of refreshing stage to carry out.

3. touch display unit as claimed in claim 1, it is characterized in that: described driving circuit comprises control circuit further, described control circuit is electrically connected same first electrode for controlling described display driver circuit with described touch driving circuit non-concurrent.

4. touch display unit as claimed in claim 1, it is characterized in that: described driving circuit comprises control circuit further, described control circuit is electrically connected described multiple first electrode for controlling described display driver circuit with described touch driving circuit non-concurrent.

5. touch display unit as claimed in claim 1, is characterized in that: described driving circuit timesharing provides touch-sensing drive singal and gray scale voltage to described touch display panel.

6. as the touch display unit in claim 1-5 as described in any one, it is characterized in that: described touch display panel comprises further:

Multi-strip scanning line;

A plurality of data lines; With

7. touch display unit as claimed in claim 6, it is characterized in that: in the touch-sensing stage, described driving circuit provides touch-sensing control signal to sweep trace, activate the gauge tap be connected with sweep trace, and provide touch-sensing drive singal to the first electrode by the gauge tap of data line and activation, drive the first electrode to perform self-capacitance touch-sensing.

8. touch display unit as claimed in claim 7, it is characterized in that: in the image display refreshing stage, described driving circuit provides sweep signal to sweep trace, activate the gauge tap be connected with sweep trace, and provide gray scale voltage to the first electrode by the gauge tap of data line and activation, drive the first electrode to perform image display and refresh.

9. touch display unit as claimed in claim 6, is characterized in that: image shows a plurality of data lines, multi-strip scanning line, multiple gauge tap and multiple first electrode described in refreshing stage and touch-sensing stage time-sharing multiplex.

10. an electronic equipment, comprises the touch display unit in claim 1-9 described in any one.