CN205334412U - Touch display apparatus and electronic equipment - Google Patents

Abstract

The utility model provides a touch display apparatus and electronic equipment. Touch display apparatus includes the touch display panel, including a plurality of first electrodes, driver chip, with the touch display panel is connected for it gives to provide gray scale voltage a plurality of first electrode perform image show, still are used for providing touch drive sensing signal and give self -capacitance touch sensing is carried out to a plurality of first electrodes, and control chip, connect in between a driver chip and the main control chip, be used for carry out signal transmission and processing between driver chip and the main control chip. Electronic equipment includes touch display apparatus.

Description

Touch display unit and electronic equipment

Technical field

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

Background technology

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

Utility model content

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

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

Touch display panel, including multiple first electrodes；

Driving chip, is connected with described touch display panel, is used for providing gray scale voltage to perform image to the plurality of first electrode and shows, also provides for touching driving sensing signal and perform self-capacitance touch-sensing to the plurality of first electrode；With

Control chip, is connected between described driving chip and a main control chip, for carrying out signal transmission between described driving chip and main control chip and processing。

Alternatively, described control chip receives the video data from main control chip, described video data is processed, and the video data after output processing is to driving chip, and it is corresponding gray scale voltage that driving chip changes the video data received。

Alternatively, described control chip is for carrying out decompression to the video data received。

Alternatively, before the video data received is carried out decompression, described control chip is further used for being compressed the video data received processing。

Alternatively, before carrying out decompression after being compressed the video data received processing, to the video data received, the video data that described control chip is further used for after compression is processed carries out storage process。

Alternatively, described control chip is further used for the video data after decompression is carried out color conversion process, and the video data after output color conversion process is to driving chip。

Alternatively, described driving chip includes control circuit, and described control circuit is used for controlling described driving chip timesharing output gray scale voltage and drives signal to touch display panel with touch-sensing。

Alternatively, described driving chip receives the touch-sensing detection signal from the plurality of first electrode output further, and the signal of corresponding output and the detection signal correction of described touch-sensing gives described control chip。

Alternatively, described control chip for receive export from described driving chip with touch-sensing detect signal correction input signal, described input signal is carried out level conversion process。

Alternatively, described control chip calculates according to the signal after level conversion process further and obtains touch coordinate, and exports the signal representing touch coordinate to described main control chip。

Alternatively, described touch display panel farther includes:

Multi-strip scanning line；

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

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

Wherein, described control electrode is for controlling the first transmission electrode according to the signal correspondence transmitted on scanning line and whether the second transmission electrode turns on。

Alternatively, described touch display unit includes touch-sensing control circuit, described touch-sensing control circuit is used for providing touch-sensing control signal to scanning line, activate the control switch being connected with scanning line, described driving chip is used for providing touch-sensing to drive signal to data wire, it is transferred to the first electrode with the control switch passing through to activate, the first electrode is performed self-capacitance touch-sensing；

Wherein, described touch-sensing control circuit or formation are on described touch display panel, or are formed in described driving chip。

Alternatively, described touch display unit farther includes:

Scan drive circuit, is used for providing and scans signal to scanning line, activate and scan the control switch that line is connected, and described scan drive circuit or formation are on described touch display panel, or are formed in described driving chip；

Described driving chip includes farther including:

Data drive circuit, is used for providing gray scale voltage to data wire, is transferred to the first electrode with the control switch passing through to activate, the first electrode performs image display and refreshes。

Alternatively, described touch display panel farther includes the second electrode, and described driving chip includes farther including:

Public voltage generating circuit, is used for providing common electric voltage to described second electrode, shows to coordinate the first electrode to perform image。

Alternatively, the common electric voltage that described public voltage generating circuit performs to be supplied to when image display refreshes with touch-sensing the second electrode at the first electrode is different。

Alternatively, when the first electrode performs touch-sensing, the pressure reduction that described public voltage generating circuit is supplied between the common electric voltage of the second electrode and described touch-sensing driving signal remains unchanged。

Alternatively, described driving chip farther includes:

Touch-sensing detection unit, described touch-sensing detection unit, for driving signal to the plurality of first electrode by the control switch output touch-sensing of data wire with activation, drives described first electrode to perform self-capacitance touch-sensing。

Alternatively, described touch-sensing detection unit receive further from the plurality of first electrode output touch-sensing detection signal, to described touch-sensing detect signal carry out respective handling obtain and touch-sensing detection signal correction signal。

Alternatively, described driving chip farther includes:

Analog to digital signal conversion unit, detects unit with described touch-sensing and is connected, and for described and touch-sensing detection signal correction signal simulation-digital signal is changed, and exports the digital signal after conversion。

Alternatively, described control chip includes:

Level conversion unit, is connected with described analog to digital signal conversion unit, for described digital signal is carried out level conversion。

Alternatively, described driving chip farther includes secondary signal and processes circuit, and described secondary signal processes circuit and is used for providing described touch-sensing to drive signal；Described touch-sensing detection unit includes the first operational amplifier, feedback capacity, the 4th switch；Described first operational amplifier includes in-phase end, end of oppisite phase and outfan；Described feedback capacity and described 4th switch are connected between described end of oppisite phase and outfan；Described end of oppisite phase is for being connected with the first electrode；Described in-phase end processes circuit with described secondary signal and is connected, and receives described touch-sensing and drives signal, and drives signal to the first electrode by end of oppisite phase output touch-sensing；Described outfan is connected with described analog to digital signal conversion unit, detects the signal of signal correction to analog to digital signal conversion unit with touch-sensing described in exporting。

Alternatively, described touch-sensing control circuit once provides touch-sensing control signal to scan line at least two simultaneously, described driving chip receives the touch-sensing detection signal that all or part of first electrode being connected with described at least two scanning lines exports, to perform self-capacitance touch-sensing。

Alternatively, described touch display unit farther includes:

First switch element, being arranged between data drive circuit and data wire, the first switch element includes multiple first switch, and each data wire connects data drive circuit by one first switch, described first switch element or be arranged in driving chip, or formed on touch display panel；With

Second switch unit, being arranged between touch-sensing detection unit and data wire, second switch unit includes multiple second switch, and each data wire connects touch-sensing detection unit by a second switch, described second switch unit or be arranged in driving chip, or formed on touch display panel。

Alternatively, described touch display unit farther includes:

3rd switch, is connected between second switch and described touch-sensing detection unit, and the described 3rd switchs or be arranged in driving chip, or is formed on touch display panel。

Alternatively, wherein, one the 3rd switch is connected with at least two second switches。

Preferably, described touch display unit farther includes selection circuit, it is arranged between described touch-sensing control circuit and described scan drive circuit, it is that output scans signal or touch-sensing control signal to scanning line for selecting, wherein, selection circuit or be arranged in driving chip, or formed on touch display panel。

Alternatively, described video data is voltage signal or current signal。

Alternatively, described driving chip is when providing touch-sensing to drive signal to described first electrode, and described driving chip stops receiving video data from control chip, and stops output gray scale voltage to touch display panel。

Alternatively, described control chip for displaying transmission and the process of data at described main control chip and driving chip, wherein, and the amount of the video data that the amount of the video data of described control chip storage stores more than described driving chip。

Alternatively, the memory span of described control chip is more than the memory span of described driving chip。

Alternatively, 1/5th of the amount measuring no more than whole frame video data of the video data of described driving chip storage。

Alternatively, the minimal characteristic live width of described control chip is less than the minimal characteristic live width of described driving chip。

Alternatively, described touch display unit farther includes nonvolatile memory, and described nonvolatile memory is integrated in described control chip。

This utility model also provides for a kind of electronic equipment, described electronic equipment include above-mentioned in arbitrarily described touch display unit, described electronic equipment farther includes described main control chip, described main control chip is used for providing video data to described control chip, and described control chip for displaying transmission and the process of data between described main control chip and described driving chip。

Alternatively, the instantaneous velocity that described control chip transmits video data toward described driving chip is slower than the instantaneous velocity that main control chip transmits video data toward described control chip。

Alternatively, described main control chip includes the output interface being connected with control chip, described control chip includes the output interface being connected with driving chip, and wherein, the pin number of the output interface of described main control chip is less than the pin number of the output interface of described control chip。

Alternatively, described main control chip is additionally operable to power for described touch display unit。

Showing and touch-sensing owing to the first electrode of described touch display unit is used for performing image, 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 touch display unit one embodiment 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 touch display panel shown in Fig. 4 assembles。

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

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

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

Figure 12 is the part circuit structure schematic diagram of another embodiment of touch display unit。

Figure 13 is the structural representation of the another embodiment of electronic equipment of the present invention。

Figure 14 is the schematic diagram of an embodiment of modulation circuit shown in Figure 13。

Figure 15 be electronic equipment only with one with the GND territory being benchmark time, described secondary signal processes the electrical block diagram of an embodiment of circuit。

Figure 16 is electronic equipment when adopting with two territories that GND and MGND is benchmark, the electrical block diagram of an embodiment of described secondary signal process circuit。

Figure 17 is the circuit diagram of protection circuit。

Figure 18 is the structural representation of another embodiment of protection circuit。

Figure 19 is the structural representation of another embodiment of self-capacitance touch screen。

Figure 20 is the structural representation of public voltage generating circuit。

Figure 21 is the annexation figure between second circuit and the second electrode。

Figure 22 is the schematic diagram of the display driver circuit shown in Figure 13。

Figure 23 is the structural representation of the another embodiment of electronic equipment of the present invention。

Figure 24 is the part-structure schematic diagram of another embodiment of electronic equipment of the present invention。

Detailed description of the invention

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

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

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

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

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

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

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

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

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

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

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

It is noted that image display refreshes and the image display maintenance different display state of both, it is prepare for being best understood from following described the embodiments of the present invention。It addition, more clearly " image display refreshes " is technological concept two kinds different from " image shows maintenance "。

Correspondingly, in some embodiments, when require in touch display panel any 2 first electrode non-concurrent perform images display refresh with touch-sensing time, be there are 2 first electrodes to perform image display simultaneously and keep and the situation of touch-sensing。

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

Below, various embodiments of the present invention are illustrated。

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

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

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

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

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

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

It will be appreciated that, the above is to know explanation, figure 2 illustrates part show electrode 11 and be used as the first electrode 101, so, whole show electrodes in the touch display unit 1 that present specification is following 11 be not only used for performing image and had shown but also for performing self-capacitance touch-sensing, correspondingly, below in the description of each embodiment, all it is used as the first electrode 101 for whole show electrodes 11 to be described and illustrate, but, for one of ordinary skill in the art, it is according to the following various embodiments of present specification, it is to be readily apparent that other embodiment that not all show electrode 11 is used as the first electrode 101, in order to clear succinct, other embodiment relevant repeats no more, but the protection domain of the application all should be fallen into。It addition, afore-mentioned is equally applicable the touch display unit etc. of the touch display unit 4 of aftermentioned electronic equipment 400, the touch display unit 7 of electronic equipment 700 and electronic equipment 900。

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Generally, display panels includes multiple pixel cell, and each pixel cell includes the sub-pixel of tri-kinds of colors of R, G, B, by controlling the emitting brightness of the sub-pixel of three kinds of colors, thus the coloured image realizing different GTG shows。Wherein, each sub-pixel includes controlling switch and controls pixel electrode and the public electrode that switch is connected。Voltage loaded on described pixel electrode and public electrode determines the deflection angle of liquid crystal molecule, thus the light transmittance of determiner pixel, realizes coloured image in conjunction with the color of colored filter and shows。

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

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

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

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

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

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

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

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

Seeing also Fig. 7, Fig. 7 is the part enlarged plan view of the second electrode 105 and the first electrode 101 shown in Fig. 6。Region 113 is there is also between adjacent engraved structure 115 on same first electrode 101。Correspondingly, multiple engraved structures 115 on same first electrode 101: along the direction of the plurality of engraved structure 115 arrangement, the width L1 of described engraved structure 115 is less than or equal to the width L2 in region between adjacent engraved structure 115, or/and, the area A2 in the region 113 between adjacent engraved structure 115 is preferably greater than or equal to the area A1 of an engraved structure 115, wherein, the edge in the region 113 between described adjacent engraved structure 115 is without departing from the edge of engraved structure 115。Correspondingly, the Capacitance Coupled area between described first electrode 101 and target object is big to strain, and then can improve touch-sensing precision。

It should be noted that be no matter described second electrode 105 be arranged on described first electrode 101 or under, be respectively provided with insulating barrier (sign) between this two classes electrode。

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

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

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

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

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

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

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

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

It should be noted that also need to arrange insulating barrier between described 3rd bucking electrode 111 and described first connecting line 109, described second connecting line 110。

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

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

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

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

It should be noted that, shown in Fig. 3 is touch-sensing testing circuit 2013 and data drive circuit 2033 opposite sides that is positioned at touch display panel 10, it is connected with the opposite end of data wire 103 respectively, so, preferably, touch-sensing testing circuit 2013, data drive circuit 2033 are all connected (seeing below Figure 11 and Figure 12) with the terminal of data wire 103 the same side, and Fig. 3 is limited to the size of accompanying drawing and touch-sensing testing circuit 2013, data drive circuit 2033 are connected by element annexation correspondence with the opposite end of data wire 103。

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Referring again to Fig. 3, generally, described drive circuit 20 (similar drive circuit 50 shown in Figure 13 below) farther includes display and processes circuit (not shown) and described level conversion unit (not shown), described display processes circuit for the video data from main control chip 3 carries out relevant treatment (such as storage, decompression, color conversion etc.), and is exported to data drive circuit 2033 by control circuit 205 by the video data after processing。Described data drive circuit 2033 changes described video data into corresponding gray scale voltage。Described level shifting circuit is for carrying out level conversion to some signal in described drive circuit 20, such as, except being likely to the signal representing touch coordinate of computing unit 2355 output is carried out level conversion, it is likely to the video data that display is processed circuit output and carries out level conversion, video data after output level conversion is to control circuit 205 again, with the request signal transmission between satisfied different voltage holding circuit devices。Described video data is preferably digital signal。

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

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

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

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

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

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

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

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

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

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

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

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

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

It addition, each data wire 103 switchs K3 by second switch K2 and the three further is connected to the end of oppisite phase f1 of the first operational amplifier P1。

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

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

Refer to the part circuit structure schematic diagram that Figure 12, Figure 12 are another embodiment of touch display unit 1。With the main distinction of the part circuit structure shown in Figure 13 it is: output unit 241 shared operational amplifier of the touch-sensing detection unit 232 shown in Figure 12 and data drive circuit 2033。Described data drive circuit 2033 farther includes the 7th switch K7。Each touch-sensing detection unit 232 farther includes the 5th switch K5 and the six and switchs K6。The second operational amplifier P2 that first operational amplifier P1 is time-sharing multiplex data drive circuit 2033 of described touch-sensing detection unit 232。First signal processing circuit 240 connects in-phase end e2 by the 7th switch K7。Secondary signal processes circuit 233 and connects in-phase end e2 by the 6th switch K6。Described 5th switch K5 is connected between outfan g2 and the described processing unit 235 of described second operational amplifier P2。Described 3rd switch K3 is connected between end of oppisite phase f2 and three second switch K2。4th switch K4 and feedback capacity Cf is connected between end of oppisite phase f2 and outfan g2。Outfan g2 is connected with data wire 103 by the first switch K1。

When performing image display and refreshing, described control circuit 205 (see Fig. 3) controls the first switch K1 conducting, second switch K2 cut-off, the 3rd switch K3 cut-off, the 4th switch K4 conducting, the 5th switch K5 cut-off, the 6th switch K6 cut-off, the 7th switch K7 conducting；When performing touch-sensing, described control circuit 205 controls the first switch K1 cut-off, second switch K2 conducting, the 3rd switch K3 begin to turn on after a predetermined time, the 4th switch K4 alternate conduction and cut-off, the 5th switch K5 conducting, the 6th switch K6 conducting, the 7th switch K7 cut-off。

Due to data drive circuit 2033 and touch-sensing testing circuit 2013 shared operational amplifier, such that it is able to save product cost。

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

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

Described drive circuit 20 is connected by wire as follows with the plurality of first electrode 101: show the refreshing stage at image, the plurality of first electrode 101 is electrically connected to 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, the plurality of first electrode 101 is electrically connected to described touch drive circuit 201, receives the touch-sensing from touching drive circuit 201 and drives signal, 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 drive circuit 201 and the data drive circuit 2033 in display driver circuit 203。Further, same first electrode 101 touch-sensing control circuit 2011 simultaneously or in the non-concurrent described touch drive circuit 201 of electrical connection and the scan drive circuit 2031 in display driver circuit 203。

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

According to above-mentioned steps, the touch-sensing completing the first electrode 101 to all even number lines refreshes with display, it follows that similarly, then the touch-sensing completing the first electrode 101 to all odd-numbered lines refreshes with display。

The scanning sequence changing ground, odd-numbered line and even number line can overturn。

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

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

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

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

Described main control chip 3 includes earth terminal 33, and described earth terminal 33 connects equipment ground, receives the ground signalling on equipment ground, and ground signalling represents with GND at Fig. 1。Described equipment ground is also known as systematically, for instance for the negative pole of the power supply of electronic equipment 100, and power supply is as battery。Described ground signalling GND is also known as systematically voltage, systematically signal, equipment ground voltage or equipment earth signal etc.。Described ground signalling GND is constant voltage, and as the voltage reference of circuit each in electronic equipment 100, described ground signalling GND is such as the voltage signals such as 0V (volt), 2V, (-1) V。Generally, described equipment ground not earth ground or definitely greatly。So, when electronic equipment 100 is connected with earth ground by conductor, it is likely to as earth ground described equipment。

Described drive circuit 20 farther includes the first earth terminal 251 and the second earth terminal 253 being connected。Described second earth terminal 253 is connected with described earth terminal 33。

Described touch display panel 10 farther includes earth lead 112, and described earth lead 112 is connected with described first earth terminal 251。So, changing ground, described earth lead 112 also can be directly connected to equipment ground or earth terminal 33 or the second earth terminal 253。

When described touch display unit 1 is when performing image display and refreshing with touch-sensing, described earth lead 112 all receives ground signalling GND。

In the respective embodiments described above, described electronic equipment 100 is with a territory for voltage reference。Described territory is with the ground signalling GND territory being benchmark。

Refer to the structural representation of the another embodiment that Figure 13, Figure 13 are electronic equipment of the present invention。Described electronic equipment 400 is optional essentially identical with the structure of described electronic equipment 100, as, touch display panel 40 is such as same or like with the structure of touch display panel 10, main control chip 6 is such as same or like with the structure & working mechanism of main control chip 3, the annexation between annexation and drive circuit 20 and main control chip 3 between drive circuit 50 and main control chip 6 is such as same or like, and the annexation between annexation and drive circuit 20 and touch display panel 10 between drive circuit 50 and touch display panel 40 is such as same or like。

Described electronic equipment 400 differs primarily in that with described electronic equipment 100: the drive circuit 50 of the touch display unit 4 of described electronic equipment 400 is different with the structure & working mechanism of the drive circuit 20 of the touch display unit 1 of described electronic equipment 100, when touch display panel 40 performs touch-sensing, described drive circuit 50 exports the signal to touch display panel 40 by overall uniform modulation, to improve signal to noise ratio。

Specifically, described drive circuit 50 is compared drive circuit 20 and is farther included modulation circuit 506。Described modulation circuit 506 is used for producing modulation signal, and described modulation signal is supplied to the input signal of touch display panel 40 for modulating touch drive circuit 501。Described input signal changes with the change of described modulation signal。In the present embodiment, described input signal raises with the rising of described modulation signal, reduces with the reduction of described modulation signal。So, changing ground, in other embodiments, the variation relation between described input signal and modulation signal is alternatively other suitable variation relation。

Owing to adopting modulation technique scheme, except newly-increased above-mentioned modulation circuit 506, in described drive circuit 50, also correspondence increases some circuit relevant to modulation circuit 506 or element newly, additionally, corresponding in described drive circuit 50 to also have some circuit structures to compare the circuit structure realizing same or similar function in drive circuit 20 different, and the description from below on this embodiment can know these information。

It should be noted that described electronic equipment 400 have employed different labels from same or similar structure in described electronic equipment 100, for instance, touch display panel 10 is same or like with touch display panel 40 structure, but have employed different labels；Drive circuit 50 also uses different labels etc. with same or similar circuit in drive circuit 20, be intended merely to herein allow label seem to have more logicality, more regular, and and the structure that indicates of non-limiting different labels different。Correspondingly, this is no longer going to repeat them for the structure that described electronic equipment 400 is identical with aforementioned electronic devices 100。Below the main difference part of electronic equipment 400 with electronic equipment 100 is illustrated。Similarly, the electronic equipment 700,900 being also suitable below noted earlier。

Described input signal includes described touch-sensing control signal, touch-sensing drives signal, the second common electric voltage and the 3rd common electric voltage。

The amplitude of variation size of described touch-sensing control signal, described touch-sensing driving signal, the second common electric voltage and the 3rd common electric voltage is such as corresponding identical with the amplitude of variation size of described modulation signal。

Described touch-sensing control signal, described touch-sensing drive signal, the second common electric voltage and the 3rd common electric voltage all with described modulation signal such as width with frequently and the phase place of the relative described modulation signal of the phase place of described touch-sensing control signal, described touch-sensing driving signal, the second common electric voltage and the 3rd common electric voltage be respectively provided with certain delay。

In the present embodiment, described modulation signal is periodically variable square-wave pulse signal。So, in other embodiments, described modulation signal is alternatively the signal of aperiodicity change, it addition, be alternatively other suitable waveshape signal such as sine wave or trapezoidal wave。

In the present embodiment, in the touch-sensing stage, described modulation circuit 506, by the ground of partial circuit touched in drive circuit 501 and the ground of touch display panel 40 are modulated, reaches the input signal of touch display panel 40 carries out overall uniform modulation。So, changing ground, in other embodiments, described modulation circuit 506 also can be modulated touching in drive circuit 501 all the ground of circuit and the ground of touch display panel 40, to this, after have related description。

Relatively, showing the refreshing stage at image, the ground of described display driver circuit 503 is not modulated with the ground of touch display panel 40, all receives ground signalling GND。

More specifically, described drive circuit 50 farther includes voltage generation circuit 51, multiple signal transmission ends 551 and the first power end 554。Wherein, described voltage generation circuit 51 connects modulation circuit 506, is used for providing driving signal to described modulation circuit 506。Described modulation circuit 506 is further connected between the first earth terminal 552 and the second earth terminal 553。Described first earth terminal 552 is connected with described earth lead 412 further。Described signal transmission ends 551 is connected respectively with public voltage generating circuit the 507, first switch element 508, selection circuit 510 and second switch unit 509, drives signal to the first electrode 401, exports the first common electric voltage or the second common electric voltage or the 3rd common electric voltage and to the second electrode 405 and receive the touch-sensing detection signal from the first electrode 401 output to the first electrode 401, output touch-sensing control signal to scanning line 402, output touch-sensing for exporting gray scale voltage。It should be noted that described signal transmission ends 551 includes the outfan a and transmission ends b of the drive circuit 20 such as aforementioned electronic devices 100。

Main control chip 6 includes power supply end 61 and earth terminal 63。Described earth terminal 63 is connected with described equipment ground, the second earth terminal 553。Described power supply end 61 is connected with described first power end 554。Communication interface (sign) it is further provided with, to communicate between described main control chip 6 and described drive circuit 50。

Described main control chip 6 gives described first power end 554 by described power supply end 61 output supply voltage。Described earth terminal 63 all receives the ground signalling GND from equipment ground with described second earth terminal 553。

In the touch-sensing stage, described modulation circuit 506 is corresponding according to the ground signalling GND on the second earth terminal 553 and the driving signal of described voltage generation circuit 51 produces modulation signal (representing in fig. 13) with MNGD, and exports described modulation signal MGND to the first earth terminal 552。Described first earth terminal 552 exports described modulation signal MNGD to described earth lead 412。Described driving signal is such as higher than described ground signalling GND。Such as, described ground signalling GND is 0V, and described driving signal is 2V。So, described ground signalling is 0V, described driving signal is 2V is an example, can do the adjustment of respective amplitude according to the situation of product, and this is not limited by the present invention。Definition is when touch-sensing, and the ground (including the first earth terminal 552 and earth lead 412) loading described modulation signal MGND is modulation ground, to distinguish the equipment ground loading ground signalling GND。Changing ground, in other embodiments, described modulation circuit 506 also can directly export modulation signal MGND to earth lead 412, and and unrestricted certain by the first earth terminal 552 output modulation signal MGND to earth lead 412。

Correspondingly, in the touch-sensing stage, described electronic equipment 400 is with two territories for voltage reference。Two territories are shown as with territory 480 that ground signalling GND is benchmark with to modulate the territory 490 that signal MGND is benchmark。Wherein, the earth terminal of the circuit in the territory 480 being benchmark with ground signalling GND is all directly connected to equipment ground, is all directly connected to modulation ground at the earth terminal to modulate the circuit in the territory 490 that signal MGND is benchmark。Further, for modulation for ground circuit, its ground reference is modulate loaded modulation signal MGND；For with equipment for the circuit on ground, its ground reference is the loaded ground signalling GND in equipment ground。

That is, in the touch-sensing stage, modulation ground is modulated to modulation signal MGND by ground signalling GND, loaded modulate the equal modulated signals MGND of all signals that signal MGND is basis reference and is modulated modulate。

Further, the refreshing stage is shown at image, modulation ground (552,412) is electrically connected to and the second earth terminal 553 of being connected of equipment ground by the first active switch 561 (in conjunction with Figure 13 and Figure 14), this stage, second active switch 563 is in cut-off state, correspondingly, when image display refreshes, described modulation circuit 506 exports ground signalling GND to described first earth terminal 552 and earth lead 412。Alternatively, described modulation circuit 506 persistently exports ground signalling GND to described first earth terminal 552 and earth lead 412。That is, when image display refreshes, described electronic equipment 400 is actually and adopts with the GND territory 480 being benchmark。

Referring again to Figure 13, described drive circuit 50 farther includes display and processes circuit 504 and level conversion unit 5353。Described display processes circuit 504 and is connected with described main control chip 6, for the video data from main control chip 6 carries out respective handling (e.g., compression, storage, decompression, color conversion etc.)。Described level conversion unit 5353 is arranged on described display and processes between circuit 504 and control circuit 505, carry out level conversion for described display being processed the video data after circuit 504 processes, and the video data after output level conversion gives described control circuit 505。Described control circuit 505 exports corresponding video data and clock signal to described display driver circuit 503。It is gray scale voltage that described display driver circuit 503 changes the video data received, and according to described clock signal by the first switch element 508 export gray scale voltage give corresponding first electrode 101 perform image display refresh。Described video data is preferably digital signal。

It should be noted that, when not adopting the scheme on modulation ground, if the signal between display process circuit 504 and described control circuit 505 does not need level conversion, then process between circuit 504 and control circuit 505 without arranging level conversion unit in display, but, in modulation ground technical scheme, owing to territory 480 is different from the voltage reference in territory 490, so level conversion need to be done。

Described level conversion unit 5353 is further disposed between computing unit 5355 and analog to digital signal conversion unit 5351, digital signal for analog to digital signal conversion unit 5351 is exported carries out level conversion, and the digital signal after output level conversion obtains touch coordinate to computing unit 5355。

In the present embodiment, to circuit module each in drive circuit 50 or circuit unit, the dividing condition in two territories 480,490 is: by touch-sensing control circuit 5011, selection circuit 510, touch-sensing detection unit 532, secondary signal processes circuit 533, analog to digital signal conversion unit the 5351, the 3rd switchs K3, second switch unit 509, control circuit 505, display driver circuit the 503, first switch element 508, public voltage generating circuit 507 and touch display panel 40 and is all divided in the territory 490 that MGND is benchmark；Modulation circuit 506, display are processed circuit 504, computing unit 5355 and voltage generation circuit 51 and be all divided in the territory 480 that GND is benchmark；Level conversion unit 5353 is across two territories, namely, a part is in territory 480, a part is in territory 490, for one of ordinary skill in the art, it is may determine that the part that level conversion unit 5353 lays respectively at territory 480 and territory 490 according to record and the circuit theory of the application, this is repeated no more herein。

About in drive circuit 50 with drive circuit 20 indicates the circuit module of same names or the concrete structure of circuit unit and annexation each other, function repeats no more herein, referring specifically to aforementioned drive circuit 20。Additionally, Figure 13 only illustrates a part for touch-sensing testing circuit (sign), it practice, touch-sensing testing circuit includes multiple touch-sensing detection unit 532, multiple 3rd switch K3, multiple analog to digital signal conversion unit 5351 and multiple computing unit 5355。Corresponding that is known referring to aforementioned touch sensing testing circuit 2013。

It should be noted that, the fractionation scheme of the aforementioned control chip 71 that circuit module each in drive circuit 50 or circuit unit to be disclosed after the mainly correspondence of the division in two territories 480,490 and driving chip 73, to save manufacturing cost, referring specifically to the electronic equipment 700 (referring to Figure 23) of subsequent implementation mode。

Change ground, the drive circuit 50 dividing mode in above-mentioned two territory 480,490 can be included multiple situation by the present invention, it is not limited to described in above-mentioned embodiment, such as, in other embodiments, control circuit 505, display driver circuit 503, analog to digital signal conversion unit 5351 may also be arranged in territory 480。

Again such as, computing unit 5355 may also be arranged in territory 490。It should be noted that, when computing unit 5355 be arranged in territory 490 and analog to digital signal conversion unit 5351 export the digital signal to computing unit 5355 need to carry out level conversion time, this partial level converting unit for described digital signal carries out level conversion also can be disposed entirely within territory 490。Correspondingly, as it was previously stated, described modulation circuit 506 is to touching in drive circuit 501, all the ground of circuit and the ground of touch display panel 40 are modulated。

Needing it is further noted that the signal exporting territory 490 from territory 480 can be modulated by modulated signals MGND, accordingly, the signal exporting territory 480 from territory 490 also can be modulated accordingly, e.g., and the modulation etc. contrary with modulation signal MGND。

Due to described touch display panel 40 perform touch-sensing time input signal modulated signals MGND entirety uniform modulation, it is thus possible to improve touch display unit 4 signal to noise ratio, and then improve touch-sensing precision。

Refer to the schematic diagram of the embodiment that Figure 14, Figure 14 are modulation circuit 506 shown in Figure 13。Described modulation circuit 506 includes the first active switch the 561, second active switch 563 and control unit 565。Wherein, the first active switch 561 includes controlling end G1, the first transmission ends S1 and the second transmission ends S2, and the second active switch 563 includes controlling end G2, the first transmission ends S3 and the second transmission ends S4。Described control end G1, G2 are all connected with control unit 565。Second transmission ends S2 of the first active switch 561 and the first transmission ends S3 of the second active switch 563 connects and defines an output node N on connecting line, first transmission ends S1 of the first active switch 561 receives the first reference signal, second transmission ends S4 of the second active switch 563 receives the second reference signal, described control unit 565 alternately exports described first reference signal and described second reference signal by controlling described first, second active switch 561,563 corresponding control described output node N, to form modulation signal。

In the present embodiment, described first reference signal is ground signalling, and described second reference signal is for driving signal。Correspondingly, described second transmission ends S4 is connected with described voltage generation circuit 51, and described first transmission ends S1 and the second earth terminal 553 connect, and described node N and the first earth terminal 552 connect。

Described first active switch 561 and the second active switch 563 are as thin film transistor (TFT), audion, metal oxide semiconductor field effect tube。

The operation principle of described modulation circuit 506 is: in the touch-sensing stage, and described control unit 565 is used for controlling described modulation circuit 506 output modulation signal MGND to the first earth terminal 552；Showing the refreshing stage at image, described control unit 565 is used for controlling described modulation circuit 506 and exports ground signalling GND to the first earth terminal 552。

It should be noted that described first reference signal and the second reference signal are not limited to described in present embodiment, the voltage condition of described first reference signal and the second reference signal can be any one in following five kinds of situations:

The voltage of the first: the first reference signal is positive voltage, and the voltage of the second reference signal is 0V；

The voltage of the second: the first reference signal is 0V, and the voltage of the second reference signal is negative voltage；

The voltage of the three: the first reference signal is positive voltage, and the voltage of the second reference signal is negative voltage, and the absolute value of the voltage of described first reference signal is equal or different to the absolute value of the voltage of described second reference signal；

Four: the first reference signal, the second reference signal voltage sized by different positive voltage；

Five: the first reference signal, the second reference signal voltage sized by different negative voltage。

Described first reference signal, the second reference signal are such as constant voltage signal。Described modulation signal is the periodically variable square-wave signal that the first reference signal is alternately present with the second reference signal。

It addition, the circuit structure of described modulation circuit 506 is also and described in unrestricted above-mentioned embodiment, it is possible to for the circuit structure that other is suitable。

Need further illustrate be, for touch display unit 1, electronic equipment 100 only one of which is with the ground signalling GND reference field being benchmark, and the described touch drive circuit 201 principle when driving described touch display panel 10 to perform touch-sensing is self-capacitance touch-sensing principle；For touch display unit 4, electronic equipment 400 has one with the ground signalling GND reference field being benchmark and one to modulate the signal MGND reference field being benchmark, and the described touch drive circuit 501 principle when driving described touch display panel 40 to perform touch-sensing is also for self-capacitance touch-sensing principle。

When electronic equipment 400 adopts with two territories 480,490 that GND and MGND is benchmark, not only the input signal of touch display panel 40 is made signal to noise ratio be improved by overall uniform modulation, and some circuit structure that described touch drive circuit 501 is in territory 490 correspondingly also can be simplified, and then circuit structure can also be simplified, save product cost。Such as, process circuit 233,533 for secondary signal to illustrate。

Refer to Figure 15 and Figure 16, Figure 15 be electronic equipment 100 only with one with the GND territory being benchmark time, described secondary signal processes the electrical block diagram of an embodiment of circuit 233, Figure 16 is electronic equipment 400 when adopting with two territories 480,490 that GND and MGND is benchmark, and described secondary signal processes the electrical block diagram of an embodiment of circuit 533。Secondary signal processes circuit 233 and includes current sources la, resistance Ra, the first switch K1a, second switch K2a。Wherein, current sources la and resistance Ra are connected in series between power end VDD1 and equipment ground GND。One end of first switch K1a is connected between current sources la and resistance Ra, and the other end is connected to in-phase end e1。One end of second switch K2a is connected between the first switch K1a and in-phase end e1, and the other end is connected to the equipment ground for loading ground signalling GND。By controlling the alternate conduction of the first switch K1a and second switch K2a, the corresponding touch-sensing that produces drives signal to in-phase end e1。Wherein, described power end VDD1 keeps constant relative to described equipment ground GND。Wherein, described power end VDD1 is such as the first power end 554, but is not limited to described first power end 554, it is possible to for the power end that other is suitable。

Relatively, secondary signal processes circuit 533 and includes current source Ib and resistance Rb, and described current source Ib and resistance Rb is connected in series between power end VDD2 and the modulation ground for load-modulate signal MGND。Described in-phase end e1 is connected between described current source Ib and resistance Rb。Wherein, described power end VDD2 is such as aftermentioned second source end 555。Owing to the modulation signal MGND of described modulation ground is change, therefore, power end VDD2, output voltage between described current source Ib and resistance Rb all change with the change of modulation modulation signal MGND on the ground, thus, the corresponding touch-sensing that produces drives signal to in-phase end e1。Additionally, it is possible to increase electric capacity such as modulating between ground MGND and power end VDD2, keep the stability of signal。

Circuit 233 is processed compared to secondary signal, secondary signal processes the structure of circuit 533 and becomes simple, and secondary signal processes touch-sensing produced by circuit 533 and drives signal to process touch-sensing produced by circuit 233 compared to secondary signal to drive signal to stablize。

Referring again to Figure 13, described drive circuit 50 farther includes slope controller 55。Described slope controller 55 is connected with described modulation circuit 506, for controlling the slope of the modulation signal of described modulation circuit 506 output, to reduce electromagnetic interference (EMI)。Separately, described slope controller 55 is such as arranged in the territory 480 that GND is benchmark。

Referring again to Figure 13; in the present embodiment; owing to a part for described drive circuit 50 is in the territory 480 being benchmark with GND; a part is in the territory 490 being benchmark with MGND; accordingly, it is possible to the current flowing backwards having in territory 490 is to the possibility in territory 480, in order to prevent this phenomenon; described electronic equipment 400 farther includes protection circuit 53, and described protection circuit 53 is arranged between territory 480 and territory 490。

Specifically, described drive circuit 50 farther includes second source end 555 in described territory 490。Described protection circuit 53 is arranged between described first power end 554 and second source end 555。When described modulation signal MGND is for driving signal, the corresponding connection disconnected between described first power end 554 and described second source end 555 of described protection circuit 53；When described modulation signal MGND is ground signalling GND, the corresponding connection closed between described first power end 554 and described second source end 555 of described protection circuit 53。

Refer to the circuit diagram that Figure 17, Figure 17 are protection circuit 53。In the present embodiment, described protection circuit 53 includes diode D1。The anode of described diode D1 connects the first power end 554, and the negative electrode of described diode D1 connects second source end 555。

Preferably, described protection circuit 53 farther includes the first electric capacity C1 and the second electric capacity C2。Wherein, described first electric capacity C1 is connected between anode and the equipment ground being loaded with ground signalling GND of described diode D1, and described second electric capacity C2 is connected between the negative electrode of described diode D1 and the modulation ground being loaded with modulation signal MGND。Wherein, described first electric capacity C1 and diode D1 is arranged in territory 480, and described second electric capacity C2 is arranged in territory 490。

Described in described protection circuit 53 unrestricted embodiment of above, e.g., the structural representation of another embodiment that Figure 18, Figure 18 are protection circuit 53 is referred to。In order to know that the protection circuit shown in the protection circuit 53, Figure 18 shown in difference Figure 17 is denoted as 53a。Described protection electric capacity 53a includes the 3rd active switch 571 and control unit 573。Described 3rd active switch 571 includes controlling end G3, the first transmission ends S5 and the second transmission ends S6。The control end G3 of described 3rd active switch 571 connects described control unit 573, and described first transmission ends S5 connects described first power end 554, and described second transmission ends S6 connects described second source end 555。When described modulation signal MGND is for driving signal, described control unit 573 controls described 3rd active switch 571 and ends, and described protection circuit 53a correspondence disconnects the connection between described first power end 554 and described second source end 555；When described modulation signal MGND is ground signalling GND, described control unit 573 controls described 3rd active switch 571 and turns on, and described protection circuit 53a correspondence closes the connection between described first power end 554 and described second source end 555。Described 3rd active switch 571 is as thin film transistor (TFT), audion, metal oxide semiconductor field effect tube。

Furthermore it is preferred that described protection circuit 53a farther includes the first electric capacity C1 and the second electric capacity C2。Wherein, the first electric capacity C1 is connected between the first transmission ends S5 and the equipment ground being loaded with ground signalling GND, and described second electric capacity C2 is connected between the second transmission ends S6 and the modulation ground being loaded with ground signalling MGND。

It is to be particularly noted that when performing touch-sensing, this technical scheme on employing modulation ground is also suitable the structure of the touch display panel of other suitable type, and is not limited to the structure of described touch display panel 40。Such as, self-capacitance touch screen (sign) as shown in figure 19, described self-capacitance touch screen includes multiple first electrode 401, each first electrode 401 is connected with drive circuit (sign) respectively through an independent data wire 403, namely, save the control switch 404 in touch display panel 40 shown in Figure 13 and scanning line 402, however it is necessary that the quantity increasing data wire 403, each first electrode 401 individually connects a data line 403, additionally, becoming large-sized of first electrode 401, so, the scheme adopting modulation ground can improve the sensing precision including the touch display unit that described self-capacitance touches display screen too。

Change ground, in other embodiments, described modulation circuit 506 is modulated also by the power supply in drive circuit 50 or reference power source, reaches the input signal of touch display panel 40 is carried out overall uniform modulation, and and unrestricted equipment is modulated。Such as, described modulation circuit 506 is modulated terminal for exporting one end of modulation signal。Described modulated terminal (when modulation ground), also can connect or be used as aforementioned second source end 555 (when modulating power supply) except can connecting or being used as aforementioned first earth terminal 552。When connecting or be used as described second source end 555, described modulation circuit 506 is connected between the first power end 554 and second source end 555。Described second source end 555 is relative to the first earth terminal 552, also referred to as power supply end, the two loaded voltages keep constant。

Additionally, except described second source end 555 with described first earth terminal 552, drive circuit 50 generally includes reference power source end (not shown), when second source end 555 is used for loading the first supply voltage, when first earth terminal 552 is used for loading second source voltage, described reference power source end is used for loading the 3rd supply voltage, the height of described 3rd supply voltage is between described first supply voltage and the height of second source voltage, wherein, described first supply voltage and the pressure reduction of second source voltage keep constant, the pressure reduction of described first supply voltage and the 3rd supply voltage keeps constant。Described reference power source end also is used as or connects described modulated terminal。That is, the one in described power supply end, reference power source end and the first earth terminal three is used as or connects described modulated terminal, accordingly, is used as or connects the supply voltage of described modulated terminal to include modulation signal。

Correspondingly, showing the refreshing stage at image, described modulated terminal loads a constant voltage, and described drive circuit 50 provides gray scale voltage to the plurality of first electrode 401 by signal transmission ends 551, drives described first electrode 401 to perform image and shows；In the touch-sensing stage, described modulated terminal load-modulate signal, described drive circuit 50 provides touch-sensing to drive signal to the plurality of first electrode 401 by signal transmission ends 551, described first electrode 401 is driven to perform self-capacitance touch-sensing, wherein, described touch-sensing drives signal to raise with the rising of described modulation signal, reduce with the reduction of described modulation signal。

Described control unit 565 (see Figure 14) exports described constant voltage to modulated terminal for refreshing modulation circuit 506 described in stage control in image display；At modulation circuit 506 output modulation signal described in touch-sensing stage control to modulated terminal。

Refer to the structural representation that Figure 20, Figure 20 are public voltage generating circuit 507。Described public voltage generating circuit 507 includes the first circuit 5071, second circuit 5072 and tertiary circuit 5073。Wherein, described first circuit 5071 is used for producing the first common electric voltage, and described second circuit 5072 is used for producing the second common electric voltage, and described tertiary circuit 5073 is used for producing the 3rd common electric voltage。The earth terminal of described first circuit 5071 is connected between described modulation circuit 506 and the first earth terminal 552。The earth terminal of described second circuit 5072 is connected between described modulation circuit 506 and the first earth terminal 552。The earth terminal of described tertiary circuit 5073 is connected between described modulation circuit 506 and the first earth terminal 552。

The refreshing stage is shown at image, described first circuit 5071 electrically connects with described second electrode 405 further, there is provided the first common electric voltage to the second electrode 405, it should be noted that, although the earth terminal of described first circuit 5071 is connected between described modulation circuit 506 and the first earth terminal 552, but this stage modulation circuit 506 only exports ground signalling GND to the first earth terminal 552；Being in bright screen duty in the touch-sensing stage and at touch display unit 4, described second circuit 5072 electrically connects with described second electrode 405 further, it is provided that the second common electric voltage gives described second electrode 405；It is in blank screen holding state in the touch-sensing stage and at touch display unit 4, described tertiary circuit 5073 electrically connects with described second electrode 405, there is provided the 3rd common electric voltage to described second electrode 405, it should be noted that, in the touch-sensing stage, modulation circuit 506 output modulation signal MGND give the first earth terminal 552。

When the first common electric voltage is constant voltage, correspondingly, described first circuit 5071 can be same circuit with second circuit 5072。Because when image display refreshes, the first actual connection equipment ground of circuit 5071, and modulation ground is connected when touch-sensing, thus, when image display refreshes, the first circuit 5071 exports constant first common electric voltage, and when touch-sensing, described constant first common electric voltage modulated signal MGND modulation and correspondence become the second common electric voltage of change, and the second common electric voltage and described touch-sensing drive the pressure reduction between signal to remain unchanged。So, it is possible to save second circuit 5072。

Similarly, described tertiary circuit 5073 and described secondary signal process circuit 533 and are preferably same circuit。So, tertiary circuit 5073 is saved further。

Referring again to Figure 20, described public voltage generating circuit 507 farther includes the 8th switch K8, the 9th switch K9 and the ten switchs K10, first circuit 5071 is connected by the 8th switch K8 and the second electrode 405, second circuit 5072 is connected by the 9th switch K3 and the second electrode 405, and tertiary circuit 5073 is connected by the tenth switch K10 and the second electrode 405。By controlling the 8th switch K8, the 9th switch K9 and the ten whether switch the conducting of K10, carrying out corresponding control is export which common electric voltage to the second electrode 405。

Changing ground, described second common electric voltage is alternatively modulation signal, and correspondingly, described second circuit 5073 includes the 9th switch K9, is connected between the second electrode 405 and the first earth terminal 552。

When the first circuit 5071 is same circuit with second circuit 5072, correspondingly, the switch that the 8th switch K8 and the nine switchs in K9 can be saved。

Referring to Figure 21, Figure 21 is the annexation figure between second circuit 5072 and the second electrode 405。Described second circuit 5072 includes buffer R, is connected between the second electrode 405 and the first earth terminal 552。

Preferably, described second circuit 5072 includes multiple buffer R, is connected to positions different between the second electrode 405 from the first earth terminal 552。As, it is equally spaced the surrounding at the second electrode 405, so, however it is not limited at equal intervals。Thus, it is ensured that stablizing of the second common electric voltage。It should be noted that, in the present embodiment, other element is not connected between buffer R and the first earth terminal 552, so, change ground, in other embodiments, being connected to voltage generation circuit between described buffer R and the first earth terminal 552, the voltage that described voltage generation circuit produces raises with the rising of modulation signal MGND, reduces with the reduction of modulation signal MGND。

Similarly, the first circuit 5071, tertiary circuit 5073 also can all include multiple buffer R, and are connected to positions different between the second electrode 405 from the first earth terminal 552。

Please consulting Figure 13 and Figure 22, Figure 22 more in the lump is the structural representation that the display shown in Figure 13 processes circuit 504。Described display processes circuit 504 and includes compressor circuit 5035, storage circuit 5037, decompression circuit 5038 and color conversion circuit 5039。Described compressor circuit 5035, storage circuit 5037, decompression circuit 5038 and color conversion circuit 5039 are sequentially connected with。Described compressor circuit 5035 connects described main control chip 6 by a high-speed interface 5040 further。Described color conversion circuit 5039 connects described control circuit 505 by level conversion unit 5353 further。

The video data received, for receiving the video data from main control chip 6 by high-speed interface 5040, is compressed processing by described compressor circuit 5035, and the video data after output squeezing gives storage circuit 5037。Video data after described storage circuit 5037 output squeezing is to decompression circuit 5038。Described decompression circuit 5038 decompresses receiving video data, and exports the video data after decompression to color conversion circuit 5039。Described color conversion circuit 5039 carries out color conversion process to receiving video data, as Gamma corrects, and exports the video data after conversion to level conversion unit 5353。After the described level conversion unit 5353 video data to receiving carries out level conversion, and the video data after output level conversion is to control circuit 505。

Described control circuit 505 exports corresponding video data and clock signal to data circuit circuit 5033, and further output timing signal is to scan drive circuit 5031。Described scan drive circuit 5031 is according to described clock signal, and corresponding offer scans signal accordingly to scanning line 402。It is gray scale voltage that described data drive circuit 5033 changes the video data received, and exports corresponding gray scale voltage to corresponding data wire 503 according to clock signal, to perform image display refreshing。

It is not limited to include circuit described herein it should be noted that described display processes circuit 504, it is also possible to there is no some of which circuit or farther include other circuit。Such as, described compressor circuit 5035 is arranged in main control chip 6, and in non-display process circuit 504。

Generally, described touch drive circuit 501 is formed in a chip；Display driver circuit 503 is formed in a chip；For small-size product, control circuit 505 is general and display driver circuit 503 is formed in same chip, and for large scale product, control circuit 505 is formed as alone a chip；Compressor circuit 5035, storage circuit 5037, decompression circuit 5038, color conversion circuit 5039 or be respectively formed in different chips, or the combination of wherein several persons formed in a chip。

For touch drive circuit 501 formed one touch driving chip, circuit in described touch drive circuit 501 had both included digital circuit, also include analog circuit, digital circuit and analog circuit are not distinguished and is completely formed in a chip, can cause that manufacturing cost is higher。

More specifically, each chip has a minimal characteristic live width。Described characteristic line breadth refers to the length of transistor gate。In general, minimal characteristic live width is more little, and chip area is more little, but manufacturing cost is more high, but it is as diminishing of chip minimal characteristic live width, the degree that diminishes of analog circuit area does not have the degree height that diminishes of digital circuit area, even, after the minimal characteristic live width of chip reaches certain value, even if diminishing again, analog circuit area is without diminishing, and digital circuit area can correspondence diminish, but cost still can uprise。Therefore, broadly form that to may result in manufacturing cost in the mode of a chip with less characteristic line breadth higher by touching drive circuit at present。

Similarly, display driver circuit 503, display process circuit 504, control circuit 505 place chip there is also same or like technical problem。

Inventor finds the problems referred to above by big quantity research, and proposes to solve the technological thought of described technical problem and corresponding technological means。

By drive circuit 50 by digital circuit and analog circuit point, it is respectively formed in different chips, such as, digital circuit is mainly formed in control chip, analog circuit is mainly formed in driving chip, enable to control chip area relatively diminish thus adopting different minimal characteristic live width technique to manufacture, the relative step-down of driving chip cost, and then reach to save the purpose of manufacturing cost on the whole, it addition, the area sum of two chips circuit relatively before is formed little at the area of a chips。

Correspondingly, it is proposed to following several solutions:

First: touch drive circuit 501 is formed in a control chip and a driving chip；

Second: display driver circuit 503, display are processed circuit 504 and formed in a control chip and a driving chip；

For the first and the second situation, touch drive circuit 501 control circuit 505 shared with display driver circuit 503 or formed in the driving chip of the first situation, or formed in the driving chip of the second situation, it is preferable that formed in the driving chip of the second situation。

3rd: touch drive circuit 501, control circuit 505, display driver circuit 503, display are processed circuit 504 and formed in a control chip and a driving chip。The present invention preferably the third embodiment, with and save cost and the area of reduction chip further。

Described control chip mainly includes digital circuit, and described driving chip mainly includes analog circuit。It should be noted that described control chip includes fraction analog circuit。Described driving chip includes fraction digital circuit。It addition, described control chip preferably includes the resistance to component forced down but it also may include the pressure high component of sub-fraction；Described driving chip preferably includes pressure high component but it also may include the resistance to component forced down of sub-fraction。

Wherein, the minimal characteristic live width of control chip is less than the minimal characteristic live width of driving chip。

When adopting the scheme on modulation ground, described modulation circuit 506 is preferably formed in control chip。

Due to the type according to circuit and resistance to pressure, foregoing circuit is respectively formed in different chip by the corresponding manufacturing process adopting different minimal characteristic live width, therefore, it can reduce cost of goods manufactured。

Correspondingly, it is proposed to the electronic equipment 700 of following embodiment。

Refer to the structural representation of the another embodiment that Figure 23, Figure 23 are electronic equipment of the present invention。Described electronic equipment 700 is essentially identical with the structure of aforementioned electronic devices 100,400, the problem being mainly based upon aforementioned discovery, is correspondingly formed in corresponding chip by drive circuit 20,50, saves product cost。Described electronic equipment 700 includes touch display unit 7 and main control chip 8。Described touch display unit 7 includes touch display panel 70, control chip 71 and driving chip 73。Described control chip 71 is connected between described main control chip 8 and described driving chip 73, and described driving chip 73 connects described touch display panel 70 further。

Described driving chip 73 is used for providing touch-sensing control signal to scanning line 702, activate and control switch 704, and for driving signals to described first electrode 701 by the control switch 704 offer touch-sensings of data wire 703 and activation, drive described first electrode 701 to perform self-capacitance touch-sensing。

Described control chip 71 for carrying out signal transmission and processing between described main control chip 8 and described driving chip 73。

Described driving chip 73 is further used for receiving the touch-sensing detection signal from the first electrode 701 output, described touch-sensing is detected signal and processes, and the signal with touch-sensing detection signal correction after output processing gives described control chip 71。

Such as, described driving chip 73 includes described touch-sensing control circuit 731, touch-sensing detection unit 732, secondary signal process circuit 733 and analog to digital signal conversion unit 7351。Wherein, described touch-sensing control circuit 731 is used for exporting touch-sensing control signal to scanning line 702, the touch-sensing that described touch-sensing detection unit 732 provides for exporting secondary signal to process circuit 733 drives signal to data wire 703, receive the touch-sensing detection signal from the first electrode 701 output, described touch-sensing is detected signal change, and export the signal after conversion to analog to digital signal conversion unit 7351。Described analog to digital signal conversion unit 7351 carries out analog digital conversion to the received signal, and exports the digital signal after conversion to control chip 71。So, changing ground, described touch-sensing control circuit 731 can also be formed in described touch display panel 70, is not limited in chip。

Described control chip 71 receive export from driving chip 73 with touch-sensing detect signal correction input signal, described input signal is carried out level conversion process。

Further, described control chip 71 calculates touch coordinate according to the signal after level conversion process, and exports the signal representing touch coordinate to described main control chip 8。

Such as, described control chip 71 includes level conversion unit 7353 and computing unit 7355。Wherein, described level conversion unit 7353 for carrying out level conversion to the digital signal from driving chip 73, and the digital signal after output level conversion is to computing unit 7355。Described computing unit 7355 calculates according to the digital signal after described level conversion and obtains touch coordinate, and exports the signal representing touch coordinate to described main control chip 8。

Described main control chip 8 controls electronic equipment 700 according to the signal correspondence representing touch coordinate received and performs corresponding function。

Further, similar as previously mentioned, control chip 71 with driving chip 73 increases corresponding circuit module or clipped circuit unit respectively it is also possible that, or, adopting other circuit module or circuit unit also to realize identical function is possible equally。Correspondingly, the main classification according to digital circuit or analog circuit, and the situation in conjunction with high-tension circuit and low-voltage circuit, related circuit module or circuit unit are respectively formed among driving chip 73 and control chip 71 by correspondence, wherein, driving chip 73 is more suitable for high-tension circuit, but such as low-voltage circuit but be belonging to analog circuit and may also be arranged in driving chip 73。Boundary between low pressure and high pressure can be weighed with 5V, is high pressure more than or equal to 5V, is low pressure lower than 5V。It should be noted that can be corresponding with (-5) V for boundary for negative pressure, 0V～(-5) V be then low pressure, (-5) V and the voltage lower than (-5) V, such as (-6) V, is then high pressure。So, 5V, (-5) V are two examples, and this boundary value of different product can be different。Namely the basic thought of this embodiment of the present invention is the type according to component and resistance to pressure; the chip with different minimal characteristic live width is adopted to form different types of circuit respectively; thus saving cost of goods manufactured; therefore, other change embodiment based on the technological thought of this embodiment of the present invention all should fall into protection scope of the present invention。

Specifically, as, detecting at analog to digital signal conversion unit 7351 and touch-sensing and farther include filter unit between unit 732, described filter unit exports filtered signal again to analog to digital signal conversion unit 7351 after being filtered processing to the signal of touch-sensing detection unit output。Described filter unit is arranged in driving chip 73。

Further, described control chip 71 farther includes a nonvolatile memory (not shown), and such as flash storage, described nonvolatile memory is used for storing program code。Changing ground, described nonvolatile memory is alternatively an independent chip, is connected with described control chip 71。

Being similar to aforementioned electronic devices 100, when performing touch-sensing and refreshing with image display, above-mentioned electronic equipment 700 can only with one with the GND territory being benchmark。Changing ground, be similar to aforementioned electronic devices 400, described electronic equipment 700 may be used without one with the GND territory being benchmark and one with the MGND territory being benchmark when performing touch-sensing, when performing image display and refreshing only with one with the GND territory being benchmark。Correspondingly, described control chip 71 farther includes described modulation circuit 706 and described voltage generation circuit 75。Described modulation circuit 706 is connected between the second earth terminal 714 and the first earth terminal 713, and the second earth terminal 714 connects the earth terminal 83 of main control chip 8。First earth terminal 713 connects earth lead 712。Described modulation circuit 706 drives signal generation modulation signal MGND corresponding to equipment ground signalling GND on the ground according to what described voltage generation circuit 75 provided。It addition, described control chip 71 farther includes slope controller 77, it is connected with described modulation circuit 706, for controlling the slope of the produced modulation signal MGND of modulation circuit 706, to reduce electromagnetic interference (EMI)。

Described control chip 71 is similar with the specific works principle of described driving chip 73 or is same as aforementioned touch drive circuit 20 or 50, repeats no more herein。

Further, between control chip 71 and driving chip 73, aforementioned protection circuit 53 or 53a are farther included。It should be noted that; for protection circuit 53; owing to diode D1 and first, second electric capacity C1, C2 is discrete component; it is not necessarily formed in control chip 71 and driving chip 73; so; for protection circuit 53a, control unit 573 and the 3rd active switch 571 can be preferably formed in control chip 71, and first, second electric capacity C1, C2 is not necessarily formed in control chip 71 and driving chip 73。

Circuit owing to being formed in control chip 71 is mainly digital circuit, and the circuit formed in driving chip 73 is mainly analog circuit, therefore, described control chip 71 can adopt the semiconductor circuit technique with different minimal characteristic live widths to make respectively from described driving chip 73, thus reducing product cost。

It should be noted that, for driving the circuit that touch display panel 70 performs touch-sensing also can be respectively formed in multiple control chips 71 and multiple driving chip 73, namely, it is not limited to said one control chip 71 and a driving chip 73, so, it is preferred to a control chip 71 and a driving chip 73。

Similarly, for driving the circuit that touch display panel 70 performs image display refreshing also can be respectively formed in a control chip and a driving chip。This is no longer individually repeated herein。According to following to drive touch display panel 70 perform image display refresh circuit be specifically divided in which chip can be clear。

In order to save cost further, it is possible to the circuit driving touch display panel 70 to perform image display refreshing is respectively formed in above-mentioned control chip 71 and driving chip 73。It addition, according to circuit types and resistance to pressure etc., the chips such as touch driving chip and image display chip are split again and form control chip 71 and the original creation that driving chip 73 is the application respectively, and there is the effect that can reduce cost。

Correspondingly, described control chip 71 is further used for receiving the video data from main control chip 8, after described video data carries out relevant treatment (e.g., storage, decompression, color conversion etc.), and the video data after output processing is to driving chip 73。It is corresponding gray scale voltage that described driving chip 73 changes the video data received, and provides gray scale voltage to perform image to the first electrode 701 to show。Described video data is preferably digital signal, and described gray scale voltage is preferably analogue signal。

Specifically, described control chip 71 farther includes display and processes circuit 708, high-speed interface 710 and output interface 711。Described display processes circuit 708 and is connected between high-speed interface 710 and level conversion unit 7353。Described output interface 711 includes multiple pin, is connected with driving chip 73, for transmitting signal between control chip 71 and driving chip 73。

Described driving chip 73 farther includes control circuit 735, display driver circuit 734, public voltage generating circuit the 737, first switch element 738, selection circuit the 730, the 3rd switch K3 and second switch unit 739。

It should be noted that, in the present embodiment, scan drive circuit (not shown) in described display driver circuit 734 is formed in driving chip 73, so, change ground, described scan drive circuit also may be formed on touch display panel 70, for instance, together it is produced on array base palte with controlling switch 704。It addition, the combination that the first switch element 738, second switch unit the 739, the 3rd switch the one in K3 and selection circuit 730 or any a few person also may be formed on touch display panel 70。

When adopting the technical scheme on non-modulation ground, in control chip 71 and driving chip 73 same or like with the circuit module of same names in aforementioned drive circuit 20 or the concrete structure of circuit unit and annexation each other, operation principle, repeat no more herein。For this kind of technical scheme, in control chip 71, then correspondence is not provided with modulation circuit 706, voltage generation circuit 75 and slope controller 77。

When adopting the technical scheme on modulation ground, in control chip 71 and driving chip 73 same or like with the circuit module of circuit of same names in aforementioned drive circuit 50 or the concrete structure of circuit unit and annexation each other, operation principle, repeat no more herein。

Additionally, similar Figure 13, Figure 23 only illustrates one the 3rd switch K3, touch-sensing detection unit 732, analog to digital signal conversion unit 7351 and a computing unit 7355, it practice, driving chip 73 includes multiple touch-sensing detection unit 732, multiple 3rd switch K3, multiple analog to digital signal conversion unit 7351 and multiple computing unit 7355。

It is voltage signal or current signal that described control chip 71 exports the video data to described driving chip 73。

Preferably, described driving chip 73 is when providing touch-sensing to drive signal to described first electrode 701, and described driving chip 73 stops receiving video data from control chip 71, and stops output gray scale voltage to touch display panel 70。

Preferably, the amount of the video data of described control chip 71 storage is more than the amount of the video data of described driving chip 73 storage。

The memory capacity of described control chip 71 is more than the memory capacity of described driving chip 73。

Such as, 1/5th of the amount measuring no more than whole frame video data of the video data of described driving chip 73 storage。

Preferably, the instantaneous velocity that described control chip 71 transmits video data toward described driving chip 73 is slower than the instantaneous velocity that main control chip 8 transmits video data toward described control chip 71。

Described main control chip 8 includes the output interface 89 being connected with control chip 71, and described output interface 89 includes multiple pin。Correspondingly, the pin number of the output interface 89 of described main control chip 8 is less than the pin number of the output interface 711 of described control chip 71。

Described touch display panel 70 is chosen as the touch display panel being not more than 12.1 inches。

Owing to described touch display unit 7 includes driving chip 73 and control chip 71, thus saving product cost。

It should be noted that, the control chip 71 different for the amount of above-mentioned storage video data and driving chip 73, the present invention is also not limited to described two chips respectively described control chip 71 and driving chip 73, namely, described two chips do not limit a chip and mainly include digital circuit, and another chip mainly includes analog circuit。Two different chips of measuring accordingly for storage video data are alternatively the first chip and the second chip that are connected, and wherein, the amount of the first stored video data of chip is more than the amount of the second stored video data of chip。Second chip is for providing gray scale voltage for the plurality of first electrode 701, drive the plurality of first electrode 701 to perform image display to refresh, it is additionally operable to provide touch-sensing to drive signal for the plurality of first electrode 701, drives the plurality of first electrode to perform self-capacitance touch-sensing。Wherein, described second chip changes video data into described gray scale voltage。

The minimal characteristic live width of described first chip is less than the minimal characteristic live width of described second chip。

The memory capacity of the first chip is more than the memory capacity of the second chip。

The amount of the video data of the second chip-stored is less than 1/5th of whole frame video data。

Described first chip is such as control chip, and described second chip is such as driving chip。

Further, described control chip 71 is preferably provided on a flexible circuit board, and described driving chip 73 preferably binds (Bonding) on the array base palte of described touch display panel 70。Described control chip 71 is connected with described driving chip 73 by flexible circuit board。

For drive circuit being respectively formed at the embodiment in two chips, can with further reference to the drive circuit 50 shown in Figure 13, visible drive circuit 50 is divided in the circuit in two territories 480 and 490, and correspondence is preferably respectively formed in control chip 71 and driving chip 73。Namely; the circuit being divided in territory 480 is formed in control chip 71; the circuit being divided in territory 490 is formed in driving chip 73; additionally; level conversion unit 5353 across two territories is formed in control chip 71, and protects circuit 53 or 53a as previously mentioned according to whether concrete component type corresponding selection is formed in control chip 71。

It should be noted that, in fig 23, control chip 71, driving chip 73 have employed different labels from the circuit of same names in drive circuit 50 and indicate, such as, level conversion unit in control chip 71 adopts label 7353 to indicate, but circuit structure is same or like with function, before also it is stated that repeat no more herein。

Additionally, for touch display unit, prior art is generally individually is formed in a chips by the circuit driving touch display panel to perform touch-sensing, the circuit driving touch display panel to perform image display refreshing is formed in another chips, the present invention proposes the digital circuit in two chips is mainly formed at a chips, the technological thought that analog circuit is mainly formed at another chips can reduce the manufacturing cost of product, it addition, chip area also can diminish。Therefore, it is the touch display unit 1,4,7 etc. that control chip and this embodiment of driving chip are not only suitable for each embodiment of the present invention for decoupling existing touch driving chip and image display chip, it is also suitable other type of touch display unit, including self-tolerant and mutual capacitance type touch display unit, or touch screen is arranged in the touch display unit outside display floater and touch screen forms the various types of touch display units etc. in display floater。

It should be noted that when the mode adopting modulation ground, described first electrode 401,701 is not intended to be limited to pixel electrode, being alternatively public electrode, when the first electrode is public electrode, the second electrode corresponds to pixel electrode, certainly, this two classes electrode position also will corresponding to adjusting。When adopting public electrode to do self-capacitance touch-sensing electrode, described drive circuit 50, driving chip 73 are corresponding provides common electric voltage to refresh to the first electrode 401,701 execution image display。That is, when adopting the mode on modulation ground, according to being pixel electrode or public electrode does self-capacitance touch-sensing electrode, described drive circuit 50, driving chip 73 provide corresponding display voltage to perform image display to the first electrode 401,701 to refresh。Wherein, described display voltage is gray scale voltage or common electric voltage。

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

Change ground, in some embodiments, one first electrode 101 is when performing touch-sensing, another first electrode 101 also can perform image display simultaneously and refresh, correspondingly, touch display panel 10 needs increase the quantity controlling switch 104, scanning line 102 and data wire 103, electronic equipment 900 as of fig. 24 further。

Refer to the part-structure schematic diagram that Figure 24, Figure 24 are another embodiment of electronic equipment of the present invention。Differring primarily in that of the electronic equipment 100 of described electronic equipment 900 and above-mentioned embodiment: the scanning line 902 of the touch display panel 90 of described electronic equipment 900 and 902a, data wire 903 and 903a and control the switch 904 quantity with 904a more than the scanning line 102 of the touch display panel 10 of the electronic equipment 100 of aforementioned embodiments, data wire 103 and the quantity controlling switch 104。Especially, the scanning line 902 of the touch display panel 90 of described electronic equipment 900 and 902a, data wire 903 and 903a and control switch 904 twices switching the quantity of 104 with the scanning line 102 of the touch display panel 10 of the electronic equipment 100 of the quantity respectively aforementioned embodiments of 904a, data wire 103 and control, and the quantity of the data wire 903 of the touch display panel 90 of described electronic equipment 900 is preferably identical with the quantity of the transmission ends b of touch-sensing testing circuit (not shown)。

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

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

Further, for performing the embodiment in touch-sensing stage and image display refreshing stage simultaneously, the common electric voltage of the second electrode 905 is as constant voltage。Certainly, for the scheme on modulation ground, described common electric voltage is with modulation signal intensity。

So, the respective embodiments described above of the present invention preferred touch-sensing stage carries out with image display refreshing stage timesharing。

It should be noted that, scheme for modulation ground, when performing touch-sensing preferably in one first electrode 901, another the first electrode 901 non-concurrent performs image display and refreshes, namely, for the scheme on modulation ground, the preferred timesharing of touch display panel 90 performs image display refreshing stage and touch-sensing stage。More preferably, for the scheme on modulation ground, whole show electrodes of touch display panel 90 both function as the first electrode。

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

Claims (38)

1. a touch display unit, including:

Touch display panel, including multiple first electrodes；

Driving chip, is connected with described touch display panel, is used for providing gray scale voltage to perform image to the plurality of first electrode and shows, also provides for touching driving sensing signal and perform self-capacitance touch-sensing to the plurality of first electrode；With

Control chip, is connected between described driving chip and a main control chip, for carrying out signal transmission between described driving chip and main control chip and processing。

2. touch display unit as claimed in claim 1, it is characterized in that: described control chip receives the video data from main control chip, described video data is processed, and the video data after output processing is to driving chip, it is corresponding gray scale voltage that driving chip changes the video data received。

3. touch display unit as claimed in claim 2, it is characterised in that: described control chip is for carrying out decompression to the video data received。

4. touch display unit as claimed in claim 3, it is characterised in that: before the video data received is carried out decompression, described control chip is further used for being compressed the video data received processing。

5. touch display unit as claimed in claim 4, it is characterized in that: before carrying out decompression after being compressed the video data received processing, to the video data received, the video data that described control chip is further used for after compression is processed carries out storage process。

6. touch display unit as claimed in claim 3, it is characterised in that: described control chip is further used for the video data after decompression is carried out color conversion process, and the video data after output color conversion process is to driving chip。

7. touch display unit as claimed in claim 1, it is characterised in that: described driving chip includes control circuit, and described control circuit is used for controlling described driving chip timesharing output gray scale voltage and drives signal to touch display panel with touch-sensing。

8. touch display unit as claimed in claim 2, it is characterized in that: described driving chip receives the touch-sensing detection signal from the plurality of first electrode output further, and the signal of corresponding output and the detection signal correction of described touch-sensing gives described control chip。

9. touch display unit as claimed in claim 8, it is characterised in that: described control chip for receive export from described driving chip detect the input signal of signal correction with touch-sensing, described input signal is carried out level conversion process。

10. touch display unit as claimed in claim 9, it is characterised in that: described control chip calculates according to the signal after level conversion process further and obtains touch coordinate, and exports the signal representing touch coordinate to described main control chip。

11. touch display unit as described in any one in claim 1-10, it is characterised in that: described touch display panel farther includes:

Multi-strip scanning line；

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

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

12. touch display unit as claimed in claim 11, it is characterised in that: described touch display unit farther includes:

Touch-sensing control circuit, is used for providing touch-sensing control signal to scanning line, activates the control switch being connected with scanning line, and described touch-sensing control circuit or formation are on described touch display panel, or are formed in described driving chip；

Described driving chip is used for providing touch-sensing to drive signal to data wire, is transferred to the first electrode with the control switch passing through to activate, the first electrode is performed self-capacitance touch-sensing。

13. touch display unit as claimed in claim 12, it is characterised in that: described touch display unit farther includes:

Scan drive circuit, is used for providing and scans signal to scanning line, activate and scan the control switch that line is connected, and described scan drive circuit or formation are on described touch display panel, or are formed in described driving chip；

Described driving chip includes farther including:

Data drive circuit, is used for providing gray scale voltage to data wire, is transferred to the first electrode with the control switch passing through to activate, the first electrode performs image display and refreshes。

14. touch display unit as claimed in claim 13, it is characterised in that: described touch display panel farther includes the second electrode, and described driving chip includes farther including:

Public voltage generating circuit, is used for providing common electric voltage to described second electrode, shows to coordinate the first electrode to perform image。

15. touch display unit as claimed in claim 14, it is characterised in that: the common electric voltage that described public voltage generating circuit performs to be supplied to when image display refreshes with touch-sensing the second electrode at the first electrode is different。

16. touch display unit as claimed in claim 15, it is characterised in that: when the first electrode performs touch-sensing, the pressure reduction that described public voltage generating circuit is supplied between the common electric voltage of the second electrode and described touch-sensing driving signal remains unchanged。

17. touch display unit as claimed in claim 13, it is characterised in that: described driving chip farther includes:

Touch-sensing detection unit, described touch-sensing detection unit, for driving signal to the plurality of first electrode by the control switch output touch-sensing of data wire with activation, drives described first electrode to perform self-capacitance touch-sensing。

18. touch display unit as claimed in claim 17, it is characterized in that: described touch-sensing detection unit receive further from the plurality of first electrode output touch-sensing detection signal, to described touch-sensing detect signal carry out respective handling obtain and touch-sensing detection signal correction signal。

19. touch display unit as claimed in claim 18, it is characterised in that: described driving chip farther includes:

Analog to digital signal conversion unit, detects unit with described touch-sensing and is connected, and for described and touch-sensing detection signal correction signal simulation-digital signal is changed, and exports the digital signal after conversion。

20. touch display unit as claimed in claim 19, it is characterised in that: described control chip includes:

Level conversion unit, is connected with described analog to digital signal conversion unit, for described digital signal is carried out level conversion。

21. touch display unit as claimed in claim 19, it is characterised in that: described driving chip farther includes secondary signal and processes circuit, and described secondary signal processes circuit and is used for providing described touch-sensing to drive signal；Described touch-sensing detection unit includes the first operational amplifier, feedback capacity, the 4th switch；Described first operational amplifier includes in-phase end, end of oppisite phase and outfan；Described feedback capacity and described 4th switch are connected between described end of oppisite phase and outfan；Described end of oppisite phase is for being connected with the first electrode；Described in-phase end processes circuit with described secondary signal and is connected, and receives described touch-sensing and drives signal, and drives signal to the first electrode by end of oppisite phase output touch-sensing；Described outfan is connected with described analog to digital signal conversion unit, detects the signal of signal correction to analog to digital signal conversion unit with touch-sensing described in exporting。

22. touch display unit as claimed in claim 12, it is characterized in that: described touch-sensing control circuit once provides touch-sensing control signal to scan line at least two simultaneously, described driving chip receives the touch-sensing detection signal that all or part of first electrode being connected with described at least two scanning lines exports, to perform self-capacitance touch-sensing。

23. touch display unit as claimed in claim 17, it is characterised in that: described touch display unit farther includes:

First switch element, being arranged between data drive circuit and data wire, the first switch element includes multiple first switch, and each data wire connects data drive circuit by one first switch, described first switch element or be arranged in driving chip, or formed on touch display panel；With

Second switch unit, being arranged between touch-sensing detection unit and data wire, second switch unit includes multiple second switch, and each data wire connects touch-sensing detection unit by a second switch, described second switch unit or be arranged in driving chip, or formed on touch display panel。

24. touch display unit as claimed in claim 23, it is characterised in that: described touch display unit farther includes:

3rd switch, is connected between second switch and described touch-sensing detection unit, and the described 3rd switchs or be arranged in driving chip, or is formed on touch display panel。

25. touch display unit as claimed in claim 24, it is characterised in that: wherein, one the 3rd switch is connected with at least two second switches。

26. touch display unit as claimed in claim 13, it is characterized in that: described touch display unit farther includes selection circuit, it is arranged between described touch-sensing control circuit and described scan drive circuit, it is that output scans signal or touch-sensing control signal to scanning line for selecting, wherein, selection circuit or be arranged in driving chip, or formed on touch display panel。

27. touch display unit as claimed in claim 2, it is characterised in that: described video data is voltage signal or current signal。

28. touch display unit as claimed in claim 2, it is characterized in that: described driving chip is when providing touch-sensing to drive signal to described first electrode, described driving chip stops receiving video data from control chip, and stops output gray scale voltage to touch display panel。

29. touch display unit as claimed in claim 1, it is characterized in that: described control chip for displaying transmission and the process of data at described main control chip and driving chip, wherein, the amount of the video data that the amount of the video data of described control chip storage stores more than described driving chip。

30. touch display unit as claimed in claim 29, it is characterised in that: the memory span of described control chip is more than the memory span of described driving chip。

31. touch display unit as claimed in claim 30, it is characterised in that: 1/5th of the amount measuring no more than whole frame video data of the video data of described driving chip storage。

32. touch display unit as claimed in claim 1, it is characterised in that: the minimal characteristic live width of described control chip is less than the minimal characteristic live width of described driving chip。

33. touch display unit as claimed in claim 1, it is characterised in that: described touch display unit farther includes nonvolatile memory, and described nonvolatile memory is integrated in described control chip。

34. touch display unit as claimed in claim 1, it is characterised in that: described driving chip is two different one chips from described control chip。

35. an electronic equipment, it is touch display unit described in any one in claim 1-34 including touch display unit, described electronic equipment farther includes described main control chip, described main control chip is used for providing video data to described control chip, and described control chip for displaying transmission and the process of data between described main control chip and described driving chip。

36. electronic equipment as claimed in claim 35, it is characterised in that: the instantaneous velocity that described control chip transmits video data toward described driving chip is slower than the instantaneous velocity that main control chip transmits video data toward described control chip。

37. electronic equipment as claimed in claim 36, it is characterized in that: described main control chip includes the output interface being connected with control chip, described control chip includes the output interface being connected with driving chip, wherein, the pin number of the output interface of described main control chip is less than the pin number of the output interface of described control chip。

38. electronic equipment as claimed in claim 35, it is characterised in that: described main control chip is additionally operable to power for described touch display unit。