TWI756665B - Touch display panel and a touch control circuit - Google Patents

Abstract

A touch display panel including a substrate, a first touch sensor layer and a display electrode layer is provided. The first touch sensor layer is disposed on the substrate and patternized into a plurality of blocks for serving as a plurality of first touch sensor electrodes. The first touch sensor electrodes are grouped into a plurality of touch sensor units. Each touch sensor unit includes one or more first touch sensor electrodes. At least one first touch sensor electrode of each touch sensor unit serves as a transmitting electrode during a touch sensing period. The display electrode layer is disposed between the substrate and the first touch sensor layer and patternized into a plurality of blocks for serving as a plurality of display electrodes. The display electrodes are grouped into a plurality of display units. Each display unit includes one or more display electrodes. Each display unit is respectively corresponding to a touch sensor unit of the plurality of touch sensor units.

Description

Touch display panel and touch circuit

The present invention relates to a touch display panel and a touch circuit for driving the touch display panel.

As the current development trend provides thinner and lighter display panels, the substrates and encapsulation layers of the display panels are also gradually becoming thinner.

10um(微米))。 For example, using an organic light-emitting diode (OLED) with an on-cell touch display panel can provide a very thin encapsulation layer (

10um (micron)).

Another example is an in-cell On-Cell touch panel with a liquid crystal display (LCD) on a color filter (CF) glass panel, the thickness of the color filter glass (150un~200um) It is also gradually thinning, or replacing color filter glass with other materials, to produce thinner display panels.

Therefore, both the OLED On-Cell touch panel and the LCD On-Cell touch panel are better than the traditional LCD Out-Cell touch panel. The display panel is also thin. However, parasitic capacitance is inversely proportional to the distance between the touch sensor and the display electrodes on the touch display panel. Therefore, the thinner the touch display panel, the higher the parasitic capacitance, and the higher the output power is required to drive the On-Cell touch display panel.

Therefore, in order to solve the above-mentioned difficulties, the present invention provides a touch circuit for controlling a touch display panel. The touch display panel includes a plurality of touch sensor electrodes and a plurality of display electrodes. The touch circuit drives the touch display panel to execute the touch sensing method.

In one embodiment of the present invention, the present invention relates to a touch display panel. The touch display panel includes a substrate, a first touch sensor layer and a display electrode layer. The first touch sensor layer is disposed on the substrate and is patterned as a plurality of blocks of a plurality of first touch sensor electrodes. The first touch sensor electrode is divided into a plurality of touch sensor units. Each touch sensor unit includes one or more first touch sensor electrodes. During touch sensing, at least one first touch sensor electrode of each touch sensor unit is used as a transmitting electrode. The display electrode layer is disposed between the substrate and the first touch sensor layer, and is patterned as a plurality of blocks of a plurality of display electrodes. The display electrodes are divided into a plurality of display cells. Each display cell includes one or more display electrodes. Each display unit corresponds to one of the plurality of touch sensor units, respectively.

In one embodiment of the present invention, the present invention relates to a method for controlling Touch the touch circuit of the display panel. The touch display panel includes a substrate, a first touch sensor layer and a display electrode layer. The first touch sensor layer is disposed on the substrate and is patterned as a plurality of blocks of a plurality of first touch sensor electrodes. The first touch sensor electrode is divided into a plurality of touch sensor units. Each touch sensor unit includes one or more first touch sensor electrodes. The display electrode layer is disposed between the substrate and the touch sensor layer, and serves as one or more display electrodes. The touch display panel further includes a plurality of display pixels. Each display pixel includes at least one organic light emitting diode. The organic light emitting diode has a first end and a second end. At least one of the first end and the second end is formed by one or more display electrodes. The touch control circuit includes a first control circuit and a second control circuit. The first control circuit is used for providing a first driving signal to at least one of the one or more first touch sensor electrodes in each touch sensor unit. At least one of the first touch sensor electrodes is used as a transmitting electrode during touch sensing. The second control circuit is used to set at least one of the one or more display electrodes to reduce the voltage between the touch sensor unit currently being driven for sensing and at least one of the one or more display electrodes The state of the effect of parasitic capacitance.

The display electrode layer can be patterned as multiple blocks of multiple display electrodes. The plurality of display electrodes are divided into a plurality of display cells. Each display cell may include one or more display electrodes. Each display unit may correspond to one of the plurality of touch sensor units, respectively.

In order to make the invention easier to understand, several embodiments with drawings are described in detail below.

100: Touch the display panel

110, 510: substrate

120, 520, 620: touch sensor layer

121~124, 125~128, 1022, 1122, 1222: touch sensor unit

130, 530: Display electrode layer

131~134: Display unit

140, 540: encapsulation layer

120_1~120_16, 1020_1~1020_4, 1120_1~1120_4, 1220_1~1220_4, 1220_5~1220_8: The first touch sensor electrodes

130_1~130_4: Display electrodes

180, 580, 680: touch circuit

181: The first control circuit

182: Second control circuit

190, 590, 690: routing

200: Display pixels

500: Organic Light Emitting Diode Panel

550: pixel layer

552: Organic Light Emitting Diode Display Pixel

600: LCD panel

610: Thin Film Transistor Glass

630: common electrode layer, display electrode layer

640: Color filter glass

830_1~830_4, 930_1~930_4: Organic Light Emitting Diode Cathode

1020_5~1020_8, 1120_5~1120_8: The second touch sensor electrode

1130_1~1130_4, 1230_1~1230_4: LCD common electrodes

1410: The first switch

1420: Second switch

C1: Capacitor

Cs: parasitic capacitance

DL: data line

Hi-Z: High impedance terminal

S1: The first drive signal

S2: Co-drive signal

SL: scan line

T1, T2: Transistor

VDD: first voltage

VDD+S2: the third voltage

VSS: second voltage

The drawings are included to provide a further understanding of the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic diagram illustrating a touch display panel and a touch circuit according to an embodiment of the present invention.

FIG. 2 illustrates a plurality of touch sensors in a touch sensor layer according to an embodiment of the present invention.

FIG. 3 illustrates a plurality of display electrodes in a display electrode layer according to an embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating a touch control circuit according to an embodiment of the present invention.

FIG. 5 is a schematic diagram illustrating an organic light emitting diode (OLED) panel and a touch circuit according to an embodiment of the present invention.

6 is a schematic diagram illustrating a liquid crystal display (LCD) touch display panel and a touch circuit according to an embodiment of the present invention.

7A and 7B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of display electrodes to reduce the influence of parasitic capacitance according to an embodiment of the present invention.

8A and 8B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of organic light emitting diode cathodes to reduce the influence of parasitic capacitance according to an embodiment of the present invention.

FIG. 9A and FIG. 9B illustrate the electrical control of a plurality of touch sensors according to an embodiment of the present invention. Schematic diagram of the electrode and multiple OLED cathodes to reduce the effects of parasitic capacitance.

FIGS. 10A and 10B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of organic light emitting diode cathodes to reduce the influence of parasitic capacitance according to an embodiment of the present invention.

FIGS. 11A and 11B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of LCD common electrodes to reduce the influence of parasitic capacitance according to an embodiment of the present invention.

12A and 12B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of liquid crystal display common electrodes to reduce the influence of parasitic capacitance according to an embodiment of the present invention.

FIG. 13A is a schematic diagram of a display pixel according to an embodiment of the present invention.

FIG. 13B is a schematic diagram of driving the display pixel of FIG. 13A.

FIG. 14A is a schematic diagram of operating a display pixel during a display period according to an embodiment of the present invention.

FIG. 14B is a schematic diagram illustrating the operation of the display pixel of FIG. 14A during touch sensing.

FIG. 15 is a flowchart showing the detailed steps of a touch control method according to an embodiment of the present invention.

It should be understood that other implementations may be utilized without departing from the scope of the present invention example, and structural changes can be made. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including", "comprising" or "having" and variations thereof herein is intended to cover the use of the items listed thereafter and their equivalents and additional items. Unless stated otherwise, "connected," "coupled," and other variations herein will be used broadly and encompass both direct and indirect connections and couplings.

Exemplary embodiments of the present invention will now be described in detail with the accompanying drawings. Wherever possible, the same drawing reference numbers will be used to describe the same or similar elements.

FIG. 1 is a schematic diagram illustrating a touch display panel and a touch circuit according to an embodiment of the present invention. FIG. 1 illustrates the touch display panel 100 and the touch circuit 180 . The touch display panel 100 may include a substrate 110 , a touch sensor layer 120 (a first touch sensor layer), a display electrode layer 130 and an encapsulation layer 140 . The touch sensor layer 120 may be disposed on the substrate 110 . The display electrode layer 130 may be disposed between the substrate 110 and the touch sensor layer 120 . The encapsulation layer 140 may be disposed between the touch sensor layer 120 and the display electrode layer 130 . The touch circuit 180 may be disposed on the substrate 110 . The touch circuit 180 can be used to control the touch display panel 100 . The traces 190 can connect the touch circuit 180 with the touch sensor layer 120 and the display electrode layer 130 .

The touch sensor layer 120 and the display electrode layer 130 may include a plurality of first touch sensor electrodes and a plurality of display electrodes, respectively, as shown in FIGS. 2 and 3 .

FIG. 2 illustrates a plurality of touch sensors in a touch sensor layer according to an embodiment of the present invention. The touch sensor layer 120 can be patterned as multiple blocks for multiple The first touch sensor electrodes 120_1 to 120_16. The first touch sensor electrodes 120_1 ˜ 120_16 may be divided into a plurality of touch sensor units 121 ˜ 124 . Each of the touch sensor units 121 ˜ 124 may include one or more first touch sensor electrodes 120_1 ˜ 120_16 . Referring to the example of FIG. 2 , the touch sensor unit 121 may include touch sensor electrodes 120_1 , 120_2 , 120_3 and 120_4 . The touch sensor unit 124 may include touch sensor electrodes 120_13, 120_14, 120_15 and 120_16. The touch sensor electrodes respectively included in the touch sensor units 122 and 123 can be deduced by analogy.

FIG. 3 illustrates a plurality of display electrodes in a display electrode layer according to an embodiment of the present invention. The display electrode layer 130 may be patterned into a plurality of blocks as the plurality of display electrodes 130_1 to 130_4. The display electrodes 130_1 to 130_4 may be divided into a plurality of display units 131 to 134 . Each of the display units 131 to 134 may include one or more display electrodes 130_1 to 130_4. 3 example, the display unit 131 may include a display electrode 130_1, the display unit 132 may include a display electrode 130_2, the display unit 133 may include a display electrode 130_3, and the display unit 134 may include a display electrode 130_4. Referring to the embodiments of FIGS. 2 and 3 , the area of each touch sensor unit 121 - 124 may be substantially smaller than or equal to the area of the corresponding display units 131 - 134 .

In this embodiment, each of the display units 131 to 134 may respectively correspond to the touch sensor units 121 to 124 of the plurality of touch sensor units. Each of the display units 131 to 134 may be located below the touch sensor units 121 to 124 . For example, the display unit 131 may be located under the touch sensor unit 121, the display unit 132 may be located under the touch sensor unit 122, and the display unit 133 may be located under the touch sensor unit 122. Below the sensor unit 123 , the display unit 134 may be located below the touch sensor unit 124 . In other words, each of the sensor units 121 ˜ 124 may be located above the corresponding display electrodes 130_1 ˜ 130_4 . For example, the touch sensor unit 121 may be located above the corresponding display electrode 130_1, the touch sensor unit 122 may be located above the corresponding display electrode 130_2, and the touch sensor unit 123 may be located above the corresponding display electrode 130_3 Above, the touch sensor unit 124 may be located above the corresponding display electrode 130_4, therefore, each of the display units 131 to 134 may respectively correspond to the touch sensor unit 121 in the plurality of touch sensor units ~124.

In this embodiment, each of the touch sensor units 121 to 124 may include a number of first touch sensor electrodes 120_1 to 120_16, and each of the corresponding display units 131 to 134 may include a second number of The electrodes 130_1 to 130_4 are displayed. The second quantity may not be equal to the first quantity. For example, FIG. 2 shows that each of the touch sensor units 121 - 124 may respectively include four first touch sensor electrodes. And FIG. 3 shows that the display units 131 to 134 may each include one display electrode, wherein the first number is four and the second number is one. The second number is not equal to the first number, and the first number may be greater than the second number. However, the examples of FIGS. 2 and 3 do not limit the invention. In addition, in this embodiment, the area of each of the first touch sensor electrodes 120_1 to 120_16 of each of the touch sensor units 121 to 124 may be smaller than or equal to that of each of the display units 131 to 134 . The area areas of the electrodes 130_1 to 130_4 are displayed.

In one embodiment, the second number of display electrodes 130_1 to 130_4 included in each corresponding display unit 131 to 134 may be equal to that of each touch sensor unit 121 to 124 include the first number of the first touch sensor electrodes 120_1 to 120_16.

In this embodiment, each display unit is shown as having a single display electrode, but in other embodiments, each display unit may have multiple display electrodes. Referring to the embodiments of FIGS. 2 and 3 , the area of each touch sensor unit 121 - 124 is substantially equal to or smaller than the area of the corresponding display units 131 - 134 . In other embodiments, the area of each touch sensor unit may be larger than that of the corresponding display unit. Also, the corresponding relationship between the touch sensor unit and the display unit may not be limited to a one-to-one relationship, and may be a one-to-many or many-to-one relationship. This means that the same touch sensor unit may correspond to different display units, or different touch sensor units may correspond to the same display unit.

FIG. 4 is a schematic diagram illustrating a touch control circuit according to an embodiment of the present invention. The touch control circuit 180 may include a first control circuit 181 and a second control circuit 182 . At least one of the one or more first touch sensor electrodes 120_1 to 120_16 of each of the touch sensor units 121 to 124 is used as a transmitting electrode during touch sensing. The first control circuit 181 can be used to provide (directly output or generate at least one control signal) at least one of the one or more first touch sensor electrodes 120_1 to 120_16 of each of the touch sensor units 121 to 124 . A first driving signal S1. The second control circuit 182 can be used to set each or more display electrodes 130_1 ˜ 130_4 of the display units 131 ˜ 134 of the corresponding touch sensor units currently driven for sensing to be able to reduce the current driven for sensing The state of the effect of the parasitic capacitance between the sensed touch sensor unit and the corresponding display unit.

In this embodiment, the state capable of reducing the influence of parasitic capacitance may be a co-drive state or a floating state. In the co-drive state, the second control circuit 182 can be used to provide (directly output or generate at least one control signal) a co-drive signal S2 to each display unit 131~ corresponding to the touch unit currently being driven for sensing. One or more display electrodes 130_1 to 130_4 in 134 . Other embodiments of the present invention provide further descriptions regarding parasitic capacitances.

The co-driving signal S2 can be directly provided by a single semiconductor chip, and the single semiconductor chip can drive and control the display panel 100 to perform at least one of a display operation, a touch sensing operation and a fingerprint sensing operation. This means that a single semiconductor chip can directly output the co-drive signal S2. Alternatively, a single semiconductor chip can generate at least one control signal for use by another circuit to generate and output the co-drive signal S2. Alternatively, the co-drive signal S2 may be provided by a touch integrated circuit (IC) and sent to the display IC, and the display IC may provide the co-drive signal S2 to each of the one or more display electrodes One. This means that the touch IC can directly output the co-drive signal S2 to the display IC. Alternatively, the touch IC can generate at least one control signal for use by another circuit (eg, a display IC or another circuit), and then the circuit can generate the co-drive signal S2 according to the at least one control signal.

Note that in some embodiments, each of the one or more display electrodes of the display unit may be further set to a co-drive state corresponding to at least one touch sensor unit that is not currently driven for sensing. This means that the corresponding A part or all of other touch sensors driven for touch sensing can be further set to co-drive each of the one or more display electrodes of the display unit by providing the same or different co-drive signals condition. In some other embodiments, each of the one or more display electrodes of the display unit may be further set to a floating state corresponding to at least one touch sensor unit that is not currently driven for sensing. This means that each of the one or more display electrodes of the display unit can be further set to a floating state corresponding to a part or all of other touch sensors that are not currently driven for touch sensing.

Referring to the hardware structure of the components of the embodiment of FIG. 4 , the first control circuit 181 and the second control circuit 182 may be processors with computing capabilities. Alternatively, the first control circuit 181 and the second control circuit 182 may be designed by hardware description languages (HDL) or any other design method for digital circuits familiar to those skilled in the art, and may be implemented by field A hardware circuit implemented by a field programmable gate array (FPGA), a complex programmable logic device (CPLD) or an application-specific integrated circuit (ASIC). In addition, sufficient teachings, suggestions and implementation descriptions about the hardware structures of the first control circuit 181 and the second control circuit 182 can be obtained with reference to common knowledge in the art, which will not be repeated here.

FIG. 5 is a schematic diagram illustrating an organic light emitting diode (OLED) panel and a touch circuit according to an embodiment of the present invention. FIG. 5 shows an organic light emitting diode panel 500 and touch circuit 580. The organic light emitting diode panel 500 may include a substrate 510 , a touch sensor layer 520 , a display electrode layer 530 , an encapsulation layer 540 , a pixel layer 550 and wirings 590 . Figure 5 depicts elements similar to those of Figures 1-4.

The organic light emitting diode panel 500 may include a plurality of display pixels 552 in the pixel layer 550 . The pixel layer 550 is disposed between the substrate 510 and the display electrode layer 530 . Each display pixel 552 may include at least one organic light emitting diode. Each organic light emitting diode may have a first end and a second end, eg, an anode terminal and a cathode terminal, and at least one of the first and second ends, eg, a cathode terminal, may be formed by an electrode in the display electrode layer 530 Display electrodes are formed. In this embodiment, the touch display panel 500 is an organic light emitting diode panel and further includes a plurality of organic light emitting diodes, and the display electrode layer may be an organic light emitting diode cathode layer of the plurality of organic light emitting diodes .

6 is a schematic diagram illustrating a liquid crystal display (LCD) touch display panel and a touch circuit according to an embodiment of the present invention. FIG. 6 shows the LCD panel 600 and the touch circuit 680 . The liquid crystal display panel 600 may include a thin-film transistor (TFT) glass 610 , a touch sensor layer 620 , a common electrode layer (display electrode layer) 630 and a color filter (CF) glass 640 . The touch sensor layer 620 may be disposed on the thin film transistor glass 610 . The common electrode layer 630 may be disposed between the thin film transistor glass 610 and the touch sensor layer 620 . The color filter glass 640 may be disposed between the touch sensor layer 620 and the common electrode layer 630 . The touch circuit 680 may be configured on the thin film transistor glass 610 . touch control The circuit 680 may be used to control the operation of the liquid crystal display panel 600 . The traces 690 can connect the touch circuit 680 to the touch sensor layer 620 and the common electrode layer 630 . In this embodiment, the touch display panel 600 is a liquid crystal display panel, and further includes a plurality of common electrodes serving as a display electrode layer.

The touch sensor layer 620 and the common electrode layer 630 are similar to the touch sensor layer 120 and the display electrode layer 130 of FIG. 1 . A description of the touch sensor layer 620 and the common electrode layer 630 can be found in the descriptions of FIGS. 1-4 .

7A and 7B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of display electrodes to reduce the influence of parasitic capacitance according to an embodiment of the present invention. FIG. 7 illustrates a plurality of touch sensor electrodes 120_1 ˜ 120_16 and a plurality of display electrodes 130_1 ˜ 130_4 .

For example, the touch sensor layer 120 includes a plurality of touch sensor electrodes 120_1 ˜ 120_16 , and the display electrode layer 130 includes a plurality of display electrodes 130_1 ˜ 130_4 . Referring to FIG. 7A , the display electrodes 130_1 ˜ 130_4 may be located below the touch sensor electrodes 120_1 ˜ 120_16 . A parasitic capacitance Cs may be generated between the touch sensor electrodes 120_1 ˜ 120_16 and the display electrodes 130_1 ˜ 130_4 .

The touch sensor electrodes 120_1 to 120_16 may be divided into a plurality of touch sensor units. The display electrodes 130_1 to 130_4 may be divided into a plurality of display units. FIG. 7A shows the touch sensor unit 122 and the display unit 132 . 2 to 4 , the first control circuit 181 may sequentially provide (direct output or At least one control signal) a first driving signal S1 is generated. Therefore, the first control circuit 181 can provide (directly output or generate at least one control signal) the first driving signal S1 to at least one touch sensor electrode of the touch sensor unit currently driven for sensing. The second control circuit 182 may set each display electrode of the display unit to a state capable of reducing the influence of parasitic capacitance between the touch sensor unit currently driven for sensing and the corresponding display electrode. Referring to the example of FIG. 7B , the touch sensor unit 122 is illustratively the touch sensor unit currently being driven for sensing. The first control circuit 181 can currently provide the first driving signal S1 to the touch sensor electrodes 120_5 to 120_8 of the touch sensor unit 122 to perform touch sensing through the touch sensor unit 122 .

The display unit 132 may be located below the touch sensor unit 122 that is currently being driven for sensing to cause a larger parasitic capacitance effect than other display units. Therefore, the display unit 132 may be set as a display unit corresponding to the touch sensor unit 122 currently driven for sensing. In order to reduce the influence of parasitic capacitance such as Cs, the second control circuit 182 may be used to set the display electrode 130_2 of the display unit 132 to a co-drive state. The second control circuit 182 can use the co-driving signal S2 to drive the display electrodes 130_2 of the display unit 132 in the co-driving state.

FIG. 7B shows that the voltage between the first driving signal S1 and the co-driving signal S2 can be substantially constant (zero or non-zero) to reduce the influence of parasitic capacitance. The first driving signal S1 and the co-driving signal S2 may have the same waveform. The co-drive signal S2 may be a second drive signal other than the first drive signal S1. The waveform of the first driving signal S1 can be The waveform is the same as that of the second driving signal or the co-driving signal S2. Therefore, the influence of the parasitic capacitance between the touch sensor unit and the corresponding display unit can be reduced. More specifically, the co-driving signal S2 may have the same frequency and phase as the first driving signal S1. Furthermore, the co-drive signal S2 and the first drive signal S1 may have the same amplitude, or the co-drive signal S2 and the first drive signal S1 may have different amplitudes.

Note that in some embodiments, one or more of the display units 131 , 133 and/or 134 may correspond to at least one touch sensor unit 121 , 123 and/or 124 that is not currently driven for sensing Each of the display electrodes is further set to a co-drive state. This means that a part or all of the other touch sensors 121 , 123 and/or 124 that are not currently driven for touch sensing can be provided with the same or different co-drive signals as the co-drive signal S2 , Each of the one or more display electrodes of the display units 131 , 133 and/or 134 is further set to a co-drive state. In some other embodiments, corresponding to at least one touch sensor unit 121 , 123 and/or 124 that is not currently driven for sensing, one or more of the display units 131 , 133 and/or 134 may be Each of the display electrodes is further set to a floating state. This means that corresponding to a part or all of the other touch sensors 121 , 123 and/or 124 that are not currently driven for touch sensing, one or more of the display units 131 , 133 and/or 134 may be Each of the display electrodes is further set to a floating state.

In another embodiment, in order to reduce the influence of parasitic capacitance, one or more display units of the display unit 132 correspond to the touch sensor unit 122 currently driven for sensing. Each of the display electrodes 130_1 to 130_4 is used to be in a floating state during the touch sensing period. In the floating state, the display electrodes are set to high impedance. Note that in some embodiments, one or more of the display units 131 , 133 and/or 134 may correspond to at least one touch sensor unit 121 , 123 and/or 124 that is not currently driven for sensing Each of the display electrodes is further set to a floating state. This means that each of the one or more display electrodes of the display unit can be further set to a floating state corresponding to a part or all of other touch sensors that are not currently driven for touch sensing.

It is to be noted that although the embodiment shows the display electrode layer being patterned as a plurality of blocks for dividing the plurality of display cells into a plurality of display electrodes, wherein each display cell includes one or more display electrodes, and Each display unit corresponds to one of the plurality of touch sensor units, respectively. However, the method of reducing the parasitic capacitance effect between the touch sensor unit currently driven for sensing and the corresponding display electrode can be applied to other types of touch display panels. For example, in some embodiments, the display electrode layer may be a single piece rather than being patterned as multiple blocks for multiple display electrodes. In other words, a whole piece can be used as a single display electrode. The display panel may include a plurality of display pixels, each display pixel including at least one organic light emitting diode, wherein the organic light emitting diode has first and second ends (eg, anode and cathode ends), and, for example, a first At least one of the terminal and the second terminal (eg, the cathode terminal) is formed by a single display electrode. The second control circuit can still be used to set a single display electrode to reduce the difference between the touch sensor unit currently being driven for sensing and the single display electrode. A state that shows the effects of parasitic capacitance between electrodes, such as a drive state or a floating state.

8A and 8B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of organic light emitting diodes to reduce the influence of parasitic capacitance according to an embodiment of the present invention. FIG. 8A illustrates a plurality of touch sensor electrodes 120_1 to 120_16 and a plurality of organic light emitting diode cathodes 830_1 to 830_4. The touch sensor layer 120 includes touch sensor electrodes 120_1 to 120_16. The display electrode layer 530 may be an organic light emitting diode cathode layer. The organic light emitting diode cathode layer includes organic light emitting diode cathodes 830_1 to 830_4.

The organic light emitting diode cathodes 830_1 ˜ 830_4 may be located below the touch sensor electrodes 120_1 ˜ 120_16 . A parasitic capacitance Cs may be generated between the touch sensor electrodes 120_1 ˜ 120_16 and the organic light emitting diode cathodes 830_1 ˜ 830_4 .

The touch sensor electrodes 120_1 to 120_16 may be divided into a plurality of touch sensor units. The organic light emitting diode cathodes 830_1 to 830_4 may be divided into a plurality of display units. FIG. 8A shows the touch sensor unit 122 and the display unit 132 . Referring to FIG. 2 to FIG. 4 , the first control circuit 181 may provide the first driving signal S1 to at least one touch sensor electrode of the touch sensor unit. The second control circuit 182 may set each display electrode of the display unit to a state in which the influence of the parasitic capacitance between the touch sensor unit and the corresponding display unit can be reduced. Referring to the example of FIG. 8B , the first control circuit 181 may provide the first driving signal S1 to the touch sensor electrodes 120_5 to 120_8 of the touch sensor unit 122 to perform touch sensing using the touch sensor unit 122 Measurement. Therefore, the touch sensor unit 122 may be the touch sensor unit currently driven for sensing.

The display unit 132 may be located below the touch sensor unit 122 . Accordingly, the display unit 132 may correspond to the touch sensor unit 122 currently driven for sensing. In order to reduce the influence of parasitic capacitance such as Cs, the second control circuit 182 may be used to set the organic light emitting diode cathode 830_2 of the display unit 132 to a co-drive state. The second control circuit 182 can use the co-drive signal S2 in the co-drive state to drive the organic light emitting diode cathode 830_2 of the display unit 132 . Therefore, the influence of the parasitic capacitance between the touch sensor unit and the corresponding display unit can be reduced. In other alternative embodiments, the second control circuit 182 can be used to set the organic light emitting diode cathode 830_2 of the display unit 132 to a floating state. In addition, the setting of the organic light emitting diode cathode of the display unit can be described by analogy with reference to FIGS. 7A and 7B to correspond to other touch sensor units that are not currently driven for sensing, and are here for brevity I won't go into details.

In addition, the plurality of touch sensor electrodes 120_1 ˜ 120_16 may be divided into touch sensor units 121 ˜ 124 . The touch sensor units 121 ˜ 124 may be columns of an array of touch sensor electrodes 120_1 ˜ 120_16 . Therefore, the organic light emitting diode cathodes 830_1 to 830_4 may also be arranged to touch the rows below the sensor electrodes 120_1 to 120_16.

FIGS. 9A and 9B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of organic light emitting diode cathodes to reduce the effects of parasitic capacitances according to an embodiment of the present invention. intention. FIG. 9A shows a plurality of touch sensor electrodes 120_1 to 120_16 and a plurality of organic light emitting diode cathodes 930_1 , 930_2 , 930_3 and 930_4 . FIG. 9A may divide the plurality of touch sensor electrodes 120_1 to 120_16 into touch sensor units 125 to 128 , which is different from FIG. 8A . The touch sensor unit 125 may include touch sensor electrodes 120_1, 120_5, 120_9, and 120_13. The touch sensor unit 128 may include touch sensor electrodes 120_4, 120_8, 120_12, and 120_16. The touch sensor electrodes respectively included in the touch sensor unit 126 and the touch sensor unit 127 can be deduced by analogy. The touch sensor units 125-128 may be rows of an array of touch sensor electrodes 120_1-120_16. Therefore, the organic light emitting diode cathodes 930_1 to 930_4 may also be arranged to touch the columns below the sensor electrodes 120_1 to 120_16.

7A and 9B, the touch display panel may be a self-capacitance touch display panel, and each of the one or more first touch sensor electrodes of the touch sensor unit One, as the transmitting electrode and the receiving electrode. For the self-capacitive touch display panel, the touch driving signal can be used to drive the touch sensor unit currently driven for sensing, and a sensing signal to be detected can be provided. A touch sensor unit that is not currently driven for sensing may not be driven by any touch driving signal, or may still be driven without providing any sensing signal to be detected.

FIGS. 10A and 10B illustrate an overview of controlling a plurality of touch sensor electrodes and a plurality of organic light emitting diode cathodes to reduce the effects of parasitic capacitances according to an embodiment of the present invention. Schematic. 10A illustrates a plurality of first touch sensor electrodes 1020_1 to 1020_4 and a plurality of second touch sensor electrodes 1020_5 to 1020_8, and a plurality of organic light emitting diode cathodes 830_1 to 830_4. The touch sensor electrodes 1020_1 to 1020_8 may be rectangular touch sensor electrodes. The second touch sensor electrodes 1020_5 to 1020_8 may be disposed above the plurality of first touch sensor electrodes 1020_1 to 1020_4. A plurality of second touch sensor electrodes 1020_5 to 1020_8 may be formed by the second touch sensor layer. That is to say, the touch display panel 100 further includes a second touch sensor layer. The second touch sensor layer is disposed on the substrate and is patterned as the second touch sensor electrodes 1020_5 to 1020_8. multiple blocks. The touch display panel may be a mutual-capacitance touch display panel, and includes first touch sensor electrodes 1020_1 to 1020_4 and second touch sensor electrodes 1020_5 to 1020_8. For the mutual capacitive touch display panel, the touch driving signal can be used to drive the touch sensor unit currently driven for sensing, so that the receiving electrode can provide the sensing signal. A touch sensor unit that is not currently driven for sensing may not be driven by any touch driving signal, or may still be driven without the receiving electrodes providing and measuring any sensing signal.

Each of the first touch sensor electrodes 1020_1 to 1020_4 can be used as a transmitting electrode Tx. Each of the second touch sensor electrodes 1020_5 to 1020_8 can be used as a receiving electrode. FIG. 10A shows that the transmitting electrode 1020_2 and the receiving electrodes 1020_5 to 1020_8 of the touch sensor unit 1022 can be arranged in different directions. Referring to FIG. 10A, the transmitting electrodes are filled with lines, and the receiving electrodes are filled with dots. can transmit through the sensing electrode The change in capacitance between Tx and the receiving electrode performs touch sensing. The organic light emitting diode cathodes 830_1 to 830_4 may be located below the touch sensor electrodes 1020_1 to 1020_8. A parasitic capacitance Cs may be generated between the emitter electrode Tx and the organic light emitting diode cathodes 830_1 to 830_4.

The first touch sensor electrodes 1020_1 to 1020_4 may be divided into a plurality of touch sensor units. The organic light emitting diode cathodes 830_1 to 830_4 may be divided into a plurality of display units. FIG. 10A shows the touch sensor unit 1022 and the display unit 132 . 1 to 4 , the first control circuit 181 can provide a first driving signal S1 to at least one touch sensor electrode of the touch sensor unit. The second control circuit 182 may set each display electrode of the display unit to a state in which the influence of the parasitic capacitance between the touch sensor unit and the corresponding display unit can be reduced. Referring to the example of FIG. 10B , the first control circuit 181 may provide the first driving signal S1 to the first touch sensor electrode 1020_2 of the touch sensor unit 1022 to perform sensing by the touch sensor unit 1022 . Therefore, the touch sensor unit 1022 may be the touch sensor unit currently driven to sense. For example, the touch sensor electrode 1020_2 may be the touch sensor electrode Tx, and the second touch sensor electrodes 1020_5 to 1020_8 may be receiving electrodes.

The display unit 132 may be located below the touch sensor unit 1022 . Accordingly, the display unit 132 may correspond to the touch sensor unit 1022 currently driven for sensing. In order to reduce the influence of parasitic capacitance such as Cs, the second control circuit 182 may be used to set the organic light emitting diode cathode 830_2 of the display unit 132 to be the same as the drive status. The second control circuit 182 can use the co-driving signal S2 to drive the organic light emitting diode cathode 830_2 of the display unit 132 . Therefore, the influence of the parasitic capacitance between the touch sensor unit and the corresponding display unit can be reduced. In other alternative embodiments, the second control circuit 182 can be used to set the organic light emitting diode cathode 830_2 of the display unit 132 to a floating state. In addition, the setting of the organic light emitting diode cathode of the display unit can be described by analogy with reference to FIGS. 7A and 7B to correspond to other touch sensor units that are not currently driven for sensing, and are here for brevity I won't go into details.

Also, the touch sensor unit 1022 may be a row of an array of touch sensor electrodes 1020_1 to 1020_8. Therefore, the organic light emitting diode cathodes 830_1 to 830_4 may also be arranged to touch the rows below the sensor electrodes 1020_1 to 1020_8.

11A and 11B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of LCD common electrodes to reduce the influence of parasitic capacitance according to an embodiment of the present invention. FIG. 11A shows a plurality of first touch sensor electrodes 1120_1 ˜ 1120_4 , a plurality of second touch sensor electrodes 1120_5 ˜ 1120_8 , and a plurality of liquid crystal display common electrodes 1130_1 ˜ 1130_4 . The plurality of first touch sensor electrodes 1120_1 to 1120_4 may be divided into touch sensor units including the touch sensor unit 1122 .

The difference between FIG. 11A and FIG. 10A is that, for example, the display electrodes 1130_1 to 1130_4 of FIG. 11A are LCD common electrodes, and the touch sensor unit 1122 of FIG. 11A is the touch sensor electrodes 1120_1 to 1120_8 Columns in the array. The LCD common electrodes 1130_1 to 1130_4 can also be configured as touch sensing Columns below the device electrodes 1120_1 to 1120_8. Further description is similar to Figures 10A and 10B.

The display unit 132 may be located below the touch sensor unit 1122 and correspond to the touch sensor unit 1122 currently driven for sensing. In order to reduce the influence of parasitic capacitance such as Cs, the second control circuit 182 can be used to set the liquid crystal display common electrode 1130_2 of the display unit 132 to a co-drive state. The second control circuit 182 can use the co-driving signal S2 to drive the liquid crystal display common electrode 1130_2 of the display unit 132 . Therefore, the influence of the parasitic capacitance between the touch sensor unit and the corresponding display unit can be reduced. In other alternative embodiments, the second control circuit 182 can be used to set the liquid crystal display common electrode 1130_2 of the display unit 132 to a floating state. In addition, the setting of the common electrode of the LCD of the display unit can be described by analogy with reference to FIG. 7A and FIG. 7B to correspond to other touch sensor units that are not currently driven for sensing. For the sake of brevity, details are not repeated here. .

In addition, FIGS. 10A-11B illustrate that the transmitting electrodes and the receiving electrodes of the touch sensor unit can be arranged in different directions.

12A and 12B are schematic diagrams illustrating controlling a plurality of touch sensor electrodes and a plurality of liquid crystal display common electrodes to reduce the influence of parasitic capacitance according to an embodiment of the present invention. The touch display panel of this embodiment may be a mutual capacitive touch display panel. FIG. 12A shows a plurality of first touch sensor electrodes 1220_1 ˜ 1220_4 and 1220_5 ˜ 1220_8 . The two first touch sensor electrodes may be divided into one touch sensor unit. During touch sensing, one or more of the first At least one of the touch sensor electrodes is used as a transmitting electrode, and at least another one of the one or more first touch sensor electrodes of each touch sensor unit is used as a receiving electrode. For example, the touch sensor unit 1222 may include first touch sensor electrodes 1220_2 and 1220_6, and the first touch sensor electrode 1220_2 filled with lines as a transmitting electrode, and filled with dots The first touch sensor electrode 1220_6 serves as a receiving electrode. The respective first touch sensor electrodes included in other touch sensor units 1222 can be deduced by analogy. FIG. 12A also shows a plurality of liquid crystal display common electrodes 1230_1 to 1230_4. The liquid crystal display common electrodes 1230_1 to 1230_4 may be divided into a plurality of display units. For example, the display unit 132 may include the liquid crystal display common electrode 1230_2.

In addition, the touch sensor unit in FIG. 12A may be a row of an array of touch sensor electrodes 1220_1 to 1220_8, which is not the same as that in FIG. 11A. Therefore, the liquid crystal display common electrodes 1230_1 ˜ 1230_4 can also be arranged as the rows below the touch sensor electrodes 1120_1 ˜ 1120_8 . Further description is similar to that of FIGS. 11A and 11B . In addition, FIG. 12A shows that the transmitting electrodes and the receiving electrodes of the touch sensor unit may be arranged in the same direction.

FIG. 13A is a schematic diagram of a display pixel according to an embodiment of the present invention. FIG. 13B is a schematic diagram of driving the display pixel of FIG. 13A. FIG. 13A illustrates an organic light emitting diode 552 similar to the plurality of organic light emitting diodes of FIG. 5 . In this embodiment, one or more display electrodes of the display unit, each corresponding to the touch sensor unit currently being driven for sensing, are used to receive the same drive signal S2.

Specifically, the touch display panel 100 includes a plurality of display pixels 200 . Each display pixel 200 includes at least one organic light emitting diode 552 . The organic light emitting diode 552 has a first end and a second end. One of the first end and the second end may serve as one of the display electrodes of the display electrode layer 530 .

The scan line SL is coupled to the control terminal of the transistor T1 to turn on or off the transistor T1. The first end of the transistor T1 may be coupled to a data line DL. When the transistor T1 is turned on, the voltage on the data line DL can be transferred from the first end of the transistor T1 to the second end of the transistor T1. The second terminal of the transistor T1 may be coupled to the first terminal of the capacitor C1. The second terminal of the transistor T1 may be coupled to the control terminal of the transistor T2. The first terminal of the transistor T2 can be coupled to the first voltage VDD or the third voltage (represented as "VDD+S2"), wherein S2 can be a co-drive signal. The first terminal of the transistor T2 can be coupled to the second terminal of the capacitor C1. The second end of the transistor T2 may be coupled to the first end of the organic light emitting diode 552 . The second terminal of the organic light emitting diode 552 may be coupled to the second voltage VSS or the fourth voltage (VSS+S2). The level of the first voltage VDD (the first voltage level) may be greater than the level of the second voltage VSS (the second voltage level).

When the transistor T1 is turned on using the scan line SL, the voltage on the data line DL can be transferred to the control terminal of the transistor T2. Therefore, the transistor T2 can be turned on and output current to drive the organic light emitting diode 552 .

FIG. 13B shows the signal waveforms during the display period and the touch sensing period. exist During display, the first terminal of the transistor T2 may be coupled to the voltage VDD, and the second terminal of the organic light emitting diode 552 may be coupled to the voltage VSS. During touch sensing, the first terminal of the transistor T2 may be coupled to the voltage (VDD+S2), and the second terminal of the organic light emitting diode 552 may be coupled to the voltage (VSS+S2). Therefore, the first end of the organic light emitting diode 552 may be coupled to the third voltage. The voltage difference between the third voltage and the co-drive signal S2 is substantially unchanged. The third voltage and the co-drive signal S2 may have the same waveform. More specifically, the co-drive signal S2 may have the same frequency and phase as the third voltage. Furthermore, the co-drive signal S2 may have the same amplitude as the third voltage, or the co-drive signal S2 may have a different amplitude from the third voltage. In this embodiment, the second voltage VSS may be zero. Therefore, the second terminal of the organic light emitting diode 552 can be coupled to the fourth voltage as the co-drive signal S2 during the touch sensing period.

Furthermore, the level difference between the direct current (DC) levels of the third voltage (VDD+S2) and the fourth voltage (VSS+S2) may be different from the direct current level of the first voltage VDD and the second voltage VSS. The level difference is the same. The level difference may be the same as the level difference during display, ie (VDD-VSS).

FIG. 14A is a schematic diagram of operating a display pixel during a display period according to an embodiment of the present invention. FIG. 14B is a schematic diagram illustrating the operation of the display pixel of FIG. 14A during touch sensing. The display pixel 200 of FIGS. 14A and 14B is similar to that of FIG. 13 , but further includes a first switch 1410 and a second switch 1420 . The first end of the organic light emitting diode may be coupled to the first switch 1410 . The second end of the organic light emitting diode 552 may be coupled to the second switch 1420 . In this embodiment, the second control circuit 182 can be used to The control switches the first switch 1410 and the second switch 1420.

FIG. 14A illustrates the switching of the first switch 1410 and the second switch 1420 during display. The second control circuit 182 can be used to switch the first switch 1410, so that the first terminal of the organic light emitting diode 552 can be coupled to the second terminal of the transistor T2. The first terminal of the transistor T2 may be coupled to the first voltage VDD. The second control circuit 182 can be used to switch the second switch 1420 so that the second terminal of the organic light emitting diode 552 can be coupled to the voltage VSS. Therefore, during the display period, the first switch 1410 is switched to be coupled to the first voltage VDD, and the second switch 1420 is switched to be coupled to the second voltage VSS. The first voltage VDD is greater than the second voltage VSS.

FIG. 14B illustrates the switching of the first switch 1410 and the second switch 1420 during touch sensing. In this embodiment, corresponding to the touch sensor unit currently being driven for sensing, each of the one or more display electrodes of the display unit may be co-driven during the touch sensing period state or floating state. The second control circuit 182 can be used to switch the first switch 1410, so that the first terminal of the organic light emitting diode 552 can be coupled to the co-drive signal S2 or the high impedance terminal Hi-Z. The second control circuit 182 can be used to switch the second switch 1420, so that the second terminal of the organic light emitting diode 552 can be coupled to the co-drive signal S2 or the high impedance terminal Hi-Z.

During the touch sensing period, when the first switch 1410 and the second switch 1420 are switched to the co-drive signal S2, corresponding to the touch sensor unit currently being driven for sensing, the display electrode of the display unit is co-drive state. During the touch sensing period, when the first switch 1410 and the second switch 1420 are switched to the high impedance terminal Hi-Z, the corresponding In the touch sensor unit currently driven for sensing, the display electrode of the display unit is in a floating state. Therefore, the influence of parasitic capacitance between the organic light emitting diode 552 and the corresponding touch sensor unit can be reduced. 14A and 14B are similar to FIG. 13 . Descriptions of other elements of FIGS. 14A and 14B can be found in the description of FIG. 13 .

In one embodiment, the co-drive signal S2 of FIGS. 14A and 14B may be the first drive signal S1 of FIG. 2 . In another embodiment, the co-driving signal S2 may be a second driving signal, and the second driving signal may be different from the first driving signal S1. The voltage difference between the first driving signal S1 and the co-driving signal S2 may be substantially unchanged.

FIG. 15 is a flowchart showing the detailed steps of a touch control method according to an embodiment of the present invention. 1 to FIG. 4 and FIG. 15 , in this embodiment, the touch method is at least applicable to the touch circuit 180 shown in FIG. 4 and the touch display panel 100 shown in FIG. 1 , but the present invention is not limited thereto. . Taking the touch circuit 180 and the touch display panel 100 as an example, in step S100 , the touch circuit 180 touches one or more first touch sensor electrodes 120_1 in each of the touch sensor units 121 - 124 to At least one of ~120_16 provides the first drive signal S1. In step S110, the touch circuit 180 sets the one or more display electrodes 130_1 to 130_4 to be able to reduce the current drive for sensing between the touch sensor unit and at least one of the one or more display electrodes. The state of the effect of parasitic capacitance.

The embodiments shown in FIG. 1 to FIG. 14B have fully taught, suggested and implemented the touch control method described in the embodiments of the present invention, and thus will not be repeated here.

In summary, the present invention relates to a touch display panel and a to drive the touch circuit that touches the display panel. The touch display panel may include a touch sensor layer and a display electrode layer. The touch sensor layer may be patterned as blocks of first touch sensor electrodes. The display electrode layer can be patterned as multiple blocks of multiple display electrodes. The touch circuit may utilize one of the touch sensor units to perform a touch sensing operation. The touch circuit may couple the co-drive signal to the display unit corresponding to the touch sensor unit currently being driven for sensing. Alternatively, the touch circuit may set the display unit corresponding to the touch sensor unit currently driven for sensing to a floating state. Therefore, the touch circuit can reduce the influence of the parasitic capacitance between the touch sensor unit currently driven for sensing and the corresponding display unit and reduce power consumption.

It will be apparent to those skilled in the art that various modifications and changes can be made in the structure of the disclosed embodiments without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the present invention covers modifications and variations of the present invention provided they fall within the scope of the appended claims and their equivalents.

100: Touch the display panel

110: Substrate

120: touch sensor layer

130: Display electrode layer

140: encapsulation layer

180: Touch Circuit

190: line

Claims (40)

A touch display panel, comprising: a substrate; a first touch sensor layer, disposed on the substrate, and patterned with a plurality of blocks to serve as a plurality of first touch sensor electrodes, wherein the Some first touch sensor electrodes are divided into a plurality of touch sensor units, each of the touch sensor units includes one or more first touch sensor electrodes, and a touch sensor During the period, at least one of the one or more first touch sensor electrodes of each of the touch sensor units is used as an emitter electrode; and a display electrode layer is disposed on the substrate and the first touch sensor. between the touch sensor layers, wherein when the touch display panel is an organic light emitting diode panel, the display electrode layer is formed by an organic light emitting diode cathode layer disposed on the organic light emitting diode panel, And the organic light-emitting diode cathode layer is patterned into a plurality of organic light-emitting diode cathodes as a plurality of display electrodes, wherein the organic light-emitting diode cathodes are grouped to form a plurality of display units, each of the display units Including at least one organic light emitting diode cathode, and each of the display units formed by the at least one organic light emitting diode cathode corresponds to a touch sensor unit of the touch sensor units in position respectively . The touch display panel according to claim 1, wherein when the touch display panel is a liquid crystal display panel, the display electrode layer is formed by a plurality of common electrodes disposed on the liquid crystal display panel. The touch display panel according to claim 1, wherein each of the touch sensor units is located above each of the corresponding display electrodes. The touch display panel of claim 1, wherein each of the touch sensor units includes a first number of the one or more first touch sensor electrodes, and each of the corresponding display units includes a a second number of the one or more display electrodes, wherein the second number is not equal to the first number. The touch display panel according to claim 4, wherein the first number is greater than the second number, and the area of each first touch sensor electrode of each touch sensor unit is smaller than that of each display The area of each display electrode of the cell. The touch display panel of claim 5, wherein the first number is greater than 1 and the second number is 1. The touch display panel of claim 1, wherein each of the touch sensor units includes a first number of the one or more first touch sensor electrodes, and each of the corresponding display units includes a a second number of the one or more display electrodes, wherein the second number is equal to the first number. The touch display panel according to claim 4, wherein the area area of each of the first touch sensor electrodes of each of the touch sensor units is smaller than or equal to the area area of each of the display electrodes of each of the display units . The touch display panel according to claim 1, wherein the area of each touch sensor unit is smaller than or equal to the area of each corresponding display unit. The touch display panel of claim 1, wherein the touch display panel is a self-capacitive touch display panel, and the one or more first touch sensor electrodes of each of the touch sensor units Each of them acts as a transmit and receive electrode. The touch display panel of claim 1, wherein the touch display panel is a mutual capacitive touch display panel, and the one or more first touch sensor electrodes of each of the touch sensor units At least the other one is used as a receiving electrode. The touch display panel according to claim 11, wherein the transmitting electrodes and the receiving electrodes of each of the touch sensor units are arranged in the same direction. The touch display panel of claim 1, wherein the touch display panel is a mutual capacitive touch display panel, wherein each of the first touch sensor electrodes of each of the touch sensor units is used as a the emitter electrode. The touch display panel of claim 13, wherein the touch display panel further comprises a second touch sensor layer disposed on the substrate and patterned with a plurality of blocks to serve as a plurality of second touch sensors touch sensor electrodes, each of the second touch sensor electrodes is used as a receiving electrode. The touch display panel according to claim 14, wherein the transmitting electrodes and the receiving electrodes are arranged in different directions. The touch display panel of claim 1, wherein one touch sensor unit among the plurality of touch sensor units is driven by a first driving signal to become a currently driven one for sensing The touch sensor unit, wherein during the touch sensing period, corresponds to the touch sensor unit currently driven for sensing, Each of the one or more display electrodes of the display unit is used for receiving a co-driving signal, wherein the voltage difference between the co-driving signal and the first driving signal is substantially unchanged. The touch display panel of claim 16, further comprising: a plurality of display pixels, each of the display pixels comprising at least one organic light emitting diode, wherein the at least one organic light emitting diode has a first end and a first two terminals, and one of the first terminal and the second terminal is used as one of the display electrodes. The touch display panel of claim 17, wherein the first terminal is coupled to a first voltage having a first voltage level, and the second terminal is coupled to a second voltage level during a display period a second voltage of the bit, and the first voltage level is greater than the second voltage level. The touch display panel of claim 17, wherein the first terminal is coupled to a third voltage, and the second terminal is coupled to a fourth voltage during the touch sensing period as the co-drive signal , wherein the voltage difference between the third voltage and the co-drive signal is substantially unchanged. The touch display panel of claim 19, wherein the level difference between the DC levels of the third voltage and the fourth voltage is the same as the level difference between the DC levels of the first voltage and the second voltage. The touch display panel of claim 17, wherein the first end is coupled to a first switch, and the second end is coupled to a second switch, and during a display period, the first switch is switched to couple is connected to a first voltage, and the second switch is switched to be coupled to a second voltage, and the first voltage is greater than the second voltage, and During the touch sensing period, the first switch is switched to be coupled to the co-drive signal, and the second switch is switched to be coupled to the co-drive signal. The touch display panel of claim 1, wherein corresponding to a touch display unit currently being driven for sensing, each of the one or more display electrodes of the display unit is driven during the touch sensing period Configured in floating state. The touch display panel of claim 22, further comprising: a plurality of display pixels, each of the display pixels comprising an organic light emitting diode, wherein the organic light emitting diode has a first end and a second end, And one of the first end and the second end serves as one of the display electrodes. The touch display panel of claim 23, wherein the first end is coupled to a first switch, and the second end is coupled to a second switch, wherein during a display period, the first switch is switched to is coupled to a first voltage, and the second switch is switched to be coupled to a second voltage, and the first voltage is greater than the second voltage, and during the touch sensing period, the first switch is switched to be coupled to is connected to a high impedance terminal, and the second switch is switched to be coupled to the high impedance terminal. A touch circuit is used to control a touch display panel, the touch display panel includes a substrate, a first touch sensor layer and a display electrode layer, wherein the first touch sensor layer is arranged on The substrate is patterned into a plurality of blocks to serve as a plurality of first touch sensor electrodes, the first touch sensor electrodes are divided into a plurality of touch sensor units, each of the The touch sensor unit includes the one or more first touch sensor electrodes, wherein the display electrode layer is disposed on the substrate and the touch sensor between the sensor layers, and serve as one or more display electrodes, and the touch display panel further includes a plurality of display pixels, each of the display pixels includes at least one organic light emitting diode, wherein the organic light emitting diode has A first end and a second end, and at least one of the first end and the second end is formed by a display electrode in the display electrode layer, wherein the touch circuit includes: a first control circuit for providing a first drive signal to at least one of the one or more first touch sensor electrodes of each of the touch sensor units, wherein the one or more first touch sensor electrodes At least one of the display electrodes is used as an emitter electrode during a touch sensing period; and a second control circuit makes at least one of the one or more display electrodes by performing a first setting operation or a second setting operation is set by the second control circuit to a state that reduces the effect of a parasitic capacitance between a touch sensor unit currently being driven for sensing and at least one of the one or more display electrodes, wherein Under the first setting operation, when the one or more first touch sensor electrodes receive the first driving signal, the second control circuit provides a second driving signal to the one or more displays at least one of the electrodes, and the second driving signal and the first driving signal have different amplitudes. The touch circuit of claim 25, wherein the display electrode layer is patterned with a plurality of blocks to serve as a plurality of display electrodes, wherein the display electrodes are divided into a plurality of display units, and each of the display units includes the one or a plurality of display electrodes, and each of the display units corresponds to one touch sensor unit of the touch sensor units respectively. The touch circuit of claim 26, wherein the second control circuit is configured to connect each of the one or more display electrodes of the display unit corresponding to the touch sensor unit currently being driven for sensing Set to a state in which the influence of the parasitic capacitance between the touch sensor unit currently driven for sensing and the corresponding display unit can be reduced. The touch circuit of claim 27, wherein under the first setting operation, the second control circuit is used to sense the touch corresponding to the current driven for sensing during the touch sensing period Each of the one or more display electrodes of the display unit of the device unit is set to a co-drive state to receive a co-drive signal, wherein the voltage difference between the co-drive signal and the first drive signal is substantially unchanged. The touch circuit of claim 28, wherein under the first setting operation, the second control circuit will correspond to the display unit of at least one touch sensor unit that is not currently driven for sensing. Each of the one or more display electrodes is set to the co-drive state. The touch circuit of claim 27, wherein under the second setting operation, the second control circuit is configured to perform touch sensing corresponding to the current driven for sensing during the touch sensing period Each of the one or more display electrodes of the display unit of the monitor unit is set to a floating state. The touch circuit of claim 30, wherein under the second setting operation, the second control circuit is further configured to set the touch sensor unit corresponding to at least one currently not driven for sensing Each of the one or more display electrodes of the display unit is set to the floating state. The touch circuit of claim 28, wherein under the first setting operation, the second control circuit is used to control the first terminal to be coupled to a voltage, and to control the second terminal to be coupled to another voltage , as the co-drive signal during the touch sensing period, wherein the voltage difference between the voltage coupled to the first end and the co-drive signal is substantially unchanged. The touch circuit of claim 28, wherein the first terminal is coupled to a first switch, and the second terminal is coupled to a second switch, and the second control circuit is used for switching during a display period The first switch is coupled to a first voltage, and the second switch is switched to be coupled to a second voltage, and the first voltage is greater than the second voltage, and during the touch sensing period, the first Two control circuits are used for switching the first switch to be coupled to the co-drive signal, and switching the second switch to be coupled to the co-drive signal. A touch method is used to control a touch display panel, the touch display panel includes a substrate, a first touch sensor layer and a display electrode layer, wherein the first touch sensor layer is disposed on A plurality of blocks are patterned on the substrate to serve as a plurality of first touch sensor electrodes. The first touch sensor electrodes are divided into a plurality of touch sensor units. The touch sensor unit includes one or more first touch sensor electrodes, wherein the display electrode layer is disposed between the substrate and the touch sensor layer, and serves as one or more display electrodes, and the display electrode layer is disposed between the substrate and the touch sensor layer. The touch display panel further includes a plurality of display pixels, each of the display pixels includes at least one organic light emitting diode, wherein the organic light emitting diode has a first end and a second end, and the first end and At least one of the second ends is formed by a display electrode in the display electrode layer, wherein the touch method includes: sensing the one or more first touches of each of the touch sensor units at least one of the sensor electrodes provides a first drive signal, and at least one of the one or more first touch sensor electrodes is used as a transmitting electrode during a touch sensing period; and by performing a first A setting operation or a second setting operation such that at least one of the one or more display electrodes is set to lower a touch sensor unit currently being driven for sensing and the one or more displays A state of influence of parasitic capacitance between at least one of the electrodes, wherein under the first setting operation, when the one or more first touch sensor electrodes receive the first drive signal, the second The control circuit provides a second driving signal to at least one of the one or more display electrodes, and the second driving signal and the first driving signal have different amplitudes. The touch control method of claim 34, wherein the display electrode layer is patterned with a plurality of blocks to serve as a plurality of display electrodes, wherein the display electrodes are divided into a plurality of display units, and each of the display units includes the one or a plurality of display electrodes, and each of the display units corresponds to a touch sensor unit of the display units respectively. The touch method of claim 35, wherein each of the one or more display electrodes of the display unit corresponding to the touch sensor unit currently driven for sensing is set to reduce the current The state of the influence of the parasitic capacitance between the touch sensor unit driven for sensing and the corresponding display unit. The touch method of claim 35, wherein under the first setting operation, during the touch sensing period, the touch sensor unit corresponding to the touch sensor unit currently driven for sensing will be Each of the one or more display electrodes is set in a co-driving state to receive a co-driving signal, wherein the voltage difference between the co-driving signal and the first driving signal is substantially unchanged. The touch method of claim 37, wherein under the first setting operation, each one or more of the display unit corresponding to at least one touch sensor unit not currently driven for sensing is set Each display electrode is set to the co-drive state. The touch method of claim 35, wherein under the second setting operation, during the touch sensing period, the touch sensor unit corresponding to the touch sensor unit currently driven for sensing will be Each of the one or more display electrodes is set to a floating state. The touch method of claim 39, wherein under the second setting operation, each one or more of the display unit corresponding to at least one touch sensor unit not currently driven for sensing is set Each display electrode is set to the floating state.

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