CN113268160A - Touch display panel, driving method thereof and touch display device - Google Patents

Touch display panel, driving method thereof and touch display device Download PDF

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Publication number
CN113268160A
CN113268160A CN202110578596.3A CN202110578596A CN113268160A CN 113268160 A CN113268160 A CN 113268160A CN 202110578596 A CN202110578596 A CN 202110578596A CN 113268160 A CN113268160 A CN 113268160A
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touch
display panel
channels
same
channel
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陈方
塔乐
夏志强
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Wuhan Tianma Microelectronics Co Ltd
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Wuhan Tianma Microelectronics Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Position Input By Displaying (AREA)

Abstract

The embodiment of the invention discloses a touch display panel, a driving method thereof and a touch display device, wherein the touch display panel comprises a plurality of touch channel groups, and each touch channel group comprises at least two touch channels; in a first touch stage, a first touch main body is contacted with a touch display panel, and touch channels in the same touch channel group transmit touch signals at the same time; in a second touch stage, a second touch main body is contacted with the touch display panel, and touch channels in the same touch channel group alternately transmit touch signals; the first touch main body is different from the second touch main body, and the contact area of the first touch main body and the touch display panel is larger than that of the second touch main body and the touch display panel. By controlling different working processes of the touch channels in the touch channel group at different touch stages, the touch sensitivity of the second touch stage is improved and the touch effect of the touch display panel is improved on the premise of ensuring normal touch at different touch stages.

Description

Touch display panel, driving method thereof and touch display device
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a touch display panel, a driving method thereof and a touch display device.
Background
Along with the continuous development of display technology, display devices such as mobile phones, tablet computers, digital cameras and intelligent wearable products with touch functions are more and more concerned by people, and touch panels can be touched by fingers and active pens.
Because the nib size of the active pen is small and the physical resolution of the touch panel is low, if the active pen is used for touch control of the touch panel, the accuracy of the detected touch position is low, so that the detection precision of the touch position is low, and the user experience is affected.
Disclosure of Invention
In view of this, embodiments of the present invention provide a touch display panel, a driving method thereof, and a touch display device, so as to solve the technical problem in the prior art that the precision of active pen touch is not high due to the low physical resolution of the touch display panel.
In a first aspect, an embodiment of the present invention provides a touch display panel, including a plurality of touch channel groups, where each touch channel group includes at least two touch channels;
in a first touch stage, a first touch main body is contacted with the touch display panel, and touch signals are transmitted by touch channels in the same touch channel group at the same time;
in a second touch stage, a second touch main body is contacted with the touch display panel, and touch signals are alternately transmitted by touch channels in the same touch channel group; the first touch main body is different from the second touch main body, and the contact area of the first touch main body and the touch display panel is larger than that of the second touch main body and the touch display panel.
In a second aspect, an embodiment of the present invention further provides a driving method of a touch display panel, which is used for driving the touch display panel provided in the first aspect;
the driving method includes:
controlling touch channels in the same touch channel group to transmit touch signals at the same time in a first touch stage;
controlling the touch channels in the same touch channel group to alternately transmit touch signals in a second touch stage; the first touch main body is different from the second touch main body, and the contact area of the first touch main body and the touch display panel is larger than that of the second touch main body and the touch display panel.
In a third aspect, an embodiment of the present invention further provides a touch display device, including the touch display panel according to the first aspect.
The touch display panel provided by the embodiment of the invention comprises a plurality of touch channel groups, wherein each touch channel group comprises at least two touch channels; in a first touch stage, a first touch main body is contacted with a touch display panel, and touch channels in the same touch channel group transmit touch signals at the same time; in the second touch stage, the second touch main body is in contact with the touch display panel, and touch channels in the same touch channel group alternately transmit touch signals. By adopting the technical scheme, the working processes of the touch channels in the touch channel group are controlled to be different at different touch stages, so that the touch sensitivity of the second touch stage is improved and the touch effect of the touch display panel is improved on the premise of ensuring that normal touch can be realized at different touch stages. In other words, the basic scheme of the embodiment of the invention improves the touch detection precision by further reducing the area of the touch channels of the touch display panel and increasing the number of the touch channels on the basis of the prior art, so that the touch display device meets the finger touch design, simultaneously optimizes the touch performance of the active pen, and improves the touch effect of the touch display panel; furthermore, on the basis of the prior art, the area of the touch channels of the touch display panel is further reduced, so that the background capacitance of each touch channel is reduced, and the output power consumption of the active pen is reduced.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a schematic structural diagram of a touch display panel in the prior art;
fig. 2 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
fig. 9 is a flowchart illustrating a driving method of a touch display panel according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of a touch display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be fully described by the detailed description with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts fall within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a touch display panel in the prior art, and fig. 1 illustrates a touch display panel as an example of a mutually-compatible touch display panel. As shown in fig. 1, the touch display panel 100 includes touch driving electrodes 101 and touch sensing electrodes 102; in the stage of finger touch, the touch driving electrode 101 transmits a touch driving signal, the touch sensing electrode 102 transmits a touch sensing signal, and the driving chip (not shown) determines the position and/or pressure of finger touch according to the touch driving signal and the touch sensing signal. In the active pen contact stage, the active pen sends a touch driving signal, the touch driving electrode 101 and the touch sensing electrode 102 simultaneously transmit a touch sensing signal, and the driving chip (not shown in the figure) confirms the position and/or pressure of the active pen touch according to the touch sensing signal transmitted by the touch driving electrode 101 and the touch sensing electrode 102.
Usually, the contact area between a finger and the touch display panel 100 is larger than the area between the single touch driving electrode 101 and the single touch sensing electrode 102, when the finger contacts the touch display panel 100, the finger can simultaneously contact the touch driving electrode 101 and the touch sensing electrode 102, and the driving chip can monitor the touch position and/or the pressure, so as to perform touch display.
In the active pen touch stage, in order to meet a certain semaphore requirement, it is required that at each node, the active pen has a sufficient interaction area with the touch driving electrode 101 and the touch sensing electrode 102. However, in the conventional touch display panel, the physical resolution of the touch driving electrodes and the touch sensing electrodes is low, the diameter D of the nib of the active pen is usually about 1.5mm (as shown by a circle in fig. 1), and the contact area between the active pen and the touch display panel 100 is smaller than the area of the single touch driving electrode 101 and the single touch sensing electrode 102. In some cases, as shown in fig. 1, the active pen tip cannot affect the touch driving electrode 101 and the touch sensing electrode 102 at the same time, and the sensing channel can only receive the touch signal of the active pen contacting the touch driving electrode 101 or the touch sensing electrode 102, so that the x value or the y value in the touch coordinate is lost, which results in low accuracy of the position coordinate and affects the touch display.
Furthermore, the driving pen is used as an external device and is powered by a power supply of the driving pen, the driving capability is limited, and the driving capability of the driving pen is directly influenced by the size of the background capacitor (Cb) of a single channel. The area of a single touch driving electrode 100 and the area of a single touch sensing electrode 102 of the touch display panel 100 are larger than the touch area of the pen point of the active pen, and when the background capacitance (Cb) of the touch display panel 100 is larger, the required driving power is larger, which causes the energy consumption of the active pen to be large, and shortens the service life of the touch pen; or an active pen with larger driving capability is needed, so that the touch cost is improved.
Based on the foregoing technical problem, an embodiment of the present invention provides a touch display panel, a driving method thereof, and a touch display device, where the touch panel includes a plurality of touch channel sets, and each touch channel set includes at least two touch channels;
in a first touch stage, a first touch main body is contacted with a touch display panel, and touch channels in the same touch channel group transmit touch signals at the same time;
in a second touch stage, a second touch main body is contacted with the touch display panel, and touch channels in the same touch channel group alternately transmit touch signals; the first touch main body is different from the second touch main body, and the contact area of the first touch main body and the touch display panel is larger than that of the second touch main body and the touch display panel.
On the basis of the prior art, the area of touch channels of the touch display panel is further reduced, the number of the touch channels is increased, the active pen is ensured to be in contact with the touch channels in different dimensions in the active pen touch control stage, and the detection precision of touch points is improved, so that the touch display device meets the finger touch control design, simultaneously, the touch performance of the active pen is optimized, and the touch precision of the touch display device is improved; furthermore, the area of the touch channels of the touch display panel is further reduced, so that the background capacitance of each touch channel can be reduced, and the power consumption loss of the active pen is reduced.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 2 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention. As shown in fig. 2, the touch display panel 200 according to the embodiment of the present invention includes a plurality of touch channel sets 210, each touch channel set 210 includes at least two touch channels 211; in the first touch stage, the first touch main body contacts the touch display panel 200, and the touch channels 211 in the same touch channel group 210 transmit touch signals at the same time; in the second touch stage, the second touch main body is in contact with the touch display panel 200, and touch channels in the same touch channel group alternately transmit touch signals; the first touch main body is different from the second touch main body, and a contact area of the first touch main body and the touch display panel 200 is larger than a contact area of the second touch main body and the touch display panel 200.
For example, the touch display panel provided by the embodiment of the present invention is suitable for a plurality of different touch scenarios, such as finger touch or active pen touch, and because different touch subjects and touch display panels have different contact areas in different touch scenarios, the embodiment of the present invention adopts different touch strategies in different touch scenarios or different touch stages, thereby ensuring that the touch requirements in different touch scenarios or touch stages can be met, and ensuring the touch accuracy of the touch display panel; meanwhile, the touch operation of the touch display panel is simple, and the power consumption is low.
Specifically, as shown in fig. 2, the touch display panel 200 provided in the embodiment of the present invention includes a plurality of touch channel groups 210, each of which includes at least two touch channels 211, and in a first touch stage, for example, a finger touch stage, a plurality of touch channels 211 in the same touch channel group 210 transmit the same touch signal, for example, the same touch driving signal or the same touch sensing signal, through the same touch signal line, without finely dividing the plurality of touch channels 211 in the same touch channel group 210, so as to ensure that the touch driving method is simple and efficient while the finger touch accuracy is satisfied. In a second touch stage, for example, in the active pen touch stage, since the contact area between the second touch main body (active pen) and the touch display panel is smaller than the contact area between the first touch main body (finger), at this time, the multiple touch channels 211 in the same touch channel group 210 are set to alternately transmit touch signals through the same touch signal line, for example, to alternately transmit touch driving signals or touch sensing signals, that is, the multiple touch channels 211 in the same touch channel group 210 are finely divided, and only one touch channel 211 is used for touch signals at the same time, so that the second touch main body can be ensured to contact with one touch channel 211 in different directions (for example, the X direction and the Y direction shown in the figure), and it is ensured that the touch signals in two different directions can be simultaneously obtained, thereby improving the touch accuracy in the second touch stage. Further, the same touch channel group 210 is finely divided into different touch channels 211, so that the number of touch channels can be further increased, and the touch detection precision is improved. Further, for the active pen touch, by further finely dividing the touch channel groups 210 of the touch display panel 200, the background capacitance (Cb) of a single touch channel 211 can be correspondingly reduced, the driving load of the active pen is reduced, and the service life of the active pen is prolonged.
In other words, comparing fig. 1 and fig. 2, the touch channel group 210 provided in the embodiment of the present invention can be understood as the touch channel shown in fig. 1, and the technical solution of the embodiment of the present invention is to divide the existing touch channels again. In the first touch stage, because the touch channels in the prior art can achieve accurate touch, in the technical scheme in the embodiment of the present invention, the multiple touch channels in the touch channel group 210 transmit the same touch signal at the same time in the first touch stage, which ensures a simple touch manner, and in the second touch stage, because the channel channels in the prior art cannot meet the touch requirement of the active pen, the touch channels in the touch channel group 210 are finely divided, for example, into 2 or more touch channels, which ensures that the touch channels are matched with the contact areas of the second touch main body and the touch display panel, thereby achieving the purpose of touch detection with the accuracy of the active pen, and further improving the touch accuracy of the active pen by improving the number of the touch channels.
It should be noted that, in fig. 2, each touch channel set 210 only includes two touch channels 211, and when three or more touch channels 211 are included in the touch channel set 210, the touch channels 211 in the same touch channel set 210 also transmit touch signals alternately, for example, the touch signals are transmitted alternately according to the sequence of the first touch channel, the second touch channel, and the third touch channel, that is, the touch channels 211 in the same touch channel set 210 transmit touch signals at the same time and at different times.
It should be noted that fig. 2 illustrates the touch display panel as a mutually-compatible touch display panel, and the touch display panel shown in fig. 2 only exemplarily shows 2 × 2 touch channel sets, actually, the specific type of the touch display panel in the embodiment of the present invention is not limited, and the number of the touch channel sets included in the touch display panel is not limited.
To sum up, in the touch display panel provided in the embodiment of the present invention, the touch channels of the touch display panel are further divided, so that the touch display panel includes a plurality of touch channel sets, each touch channel set includes at least two touch channels, and in the first touch stage, when the first touch main body contacts the touch display panel, the touch channels in the same touch channel set transmit touch signals at the same time; in the second touch stage, when the second touch main body is in contact with the touch display panel, the touch channels in the same touch channel group alternately transmit touch signals. By adopting the technical scheme, the working processes of the touch channels in the touch channel group are controlled to be different at different touch stages, so that the touch sensitivity of the second touch stage is improved and the touch effect of the touch display panel is improved on the premise of ensuring that normal touch can be realized at different touch stages. In other words, the basic scheme of the embodiment of the invention improves the touch detection precision by further reducing the area of the touch channels of the touch display panel and increasing the number of the touch channels on the basis of the prior art, so that the touch display device meets the finger touch design, simultaneously optimizes the touch performance of the active pen, and improves the touch effect of the touch display panel; furthermore, on the basis of the prior art, the area of the touch channels of the touch display panel is further reduced, so that the background capacitance of each touch channel is reduced, and the output power consumption of the active pen is reduced.
On the basis of the above embodiments, the touch display panel according to the embodiments of the present invention may be a mutual capacitive touch display panel or a self-capacitive touch display panel, and the two cases are described below.
First, a mutual capacitance touch display panel is taken as an example for explanation.
Fig. 3 is a schematic structural diagram of another touch display panel according to an embodiment of the invention; fig. 4 is a schematic structural diagram of another touch display panel according to an embodiment of the invention. As shown in fig. 3 and fig. 4, optionally, the touch display panel 200 includes a mutual capacitance type touch display panel, the touch channel group 210 includes a first touch channel group 2101 and a second touch channel group 2102, the first touch channel group 2101 includes at least two first touch channels 21011, and/or the second touch channel group 2102 includes at least two second touch channels 21021;
the first touch channels 21011 extend along a first direction (as shown in the Y direction in fig. 3), and at least two first touch channels 21011 are arranged along a second direction (as shown in the X direction in fig. 3); the second touch channel 2102 extends along a second direction, and at least two second touch channels 21021 are arranged along the first direction; the first direction and the second direction intersect;
in a first touch stage, a first touch channel 21011 in the same first touch channel group 2101 simultaneously transmits a touch driving signal, and a second touch channel 21021 in the same second touch channel group 2102 simultaneously transmits a touch sensing signal;
in the second touch phase, the first touch channels 21011 in the same first touch channel group 2101 alternately transmit touch sensing signals, and/or the second touch channels 21021 in the same second touch channel group 2102 alternately transmit touch sensing signals.
Exemplarily, referring to fig. 3 and 4, fig. 3 and 4 are each illustrated by taking a touch display panel in which a first touch channel group 2101 includes two first touch channels 21011, a second touch channel group 2102 includes two second touch channels 21021, and the number of touch channels is 2 × 2 as an example, fig. 3 and 4 only illustrate one possible implementation of the inventive concept, and further channel combinations are listed here, and all embodiments based on the inventive concept are within the scope of the present invention.
The touch display panel 200 includes a mutual capacitance type touch display panel, and the first touch channel 21011 may be a touch driving channel (T)X) Second touch channel21021 can be touch sensing channel (R)X) The first touch channel group 2101 and the second touch channel group 2102 may be disposed on the same layer, as shown in fig. 3; or the first touch channel group 2101 and the second touch channel group 2102 may be arranged in different layers, and the first touch channel group 2101 and the second touch channel group 2102 are insulated in the middle, as shown in fig. 4; it should be noted that, the specific structure of the mutual-capacitive touch display panel is not limited herein.
When in the first touch stage, for example, in the finger touch stage, because the contact area between the finger surface and the touch display panel 200 is large, the first touch channel group 2101 and the first touch channel group 2102 may be covered at the same time, at this time, the first touch channel 21011 in the same first touch channel group 2101 may transmit the touch driving signal at the same time, and the second touch channel 21021 in the same second touch channel group 2102 may transmit the touch sensing signal at the same time, at this time, the amount of the finger touch signal is sufficient, and the driving chip (not shown in the figure) confirms the position and/or pressure of the finger touch according to the touch driving signal and the touch sensing signal, thereby ensuring the accuracy of the finger touch display.
In a second touch phase, for example, an active pen touch phase, the active pen sends a touch driving signal, and at this time, the first touch channel group 2101 and the second touch channel group 2102 are both touch sensing channels to receive a touch driving signal sent by the active pen. The pen point of the active pen has a contact area with one first touch channel 21011 in the first touch channel group 2101 and one second touch channel 21021 in the second touch channel group 2102, and the first touch channel 21011 and the second touch channel 21021 transmit touch sensing signals to a driving chip (IC) to determine the touch position of the active pen. The first touch channel 21011 in the same first touch channel group 2101 alternately transmits a touch sensing signal to the driver chip and the second touch channel 21021 in the same second touch channel group 2102 alternately transmits a touch sensing signal to the driver chip, and the driver chip (not shown in the figure) confirms the touch trajectory of the active pen according to the touch sensing signal, so as to realize the touch of the active pen.
The embodiment is applied to the mutual capacitance type touch display panel, on the basis of the existing mutual capacitance type touch display panel, the number of touch channels in the same touch channel group is increased by reducing the area of the touch channels, and the working processes of the touch channels in the touch channel groups are controlled to be different at different touch stages, so that the touch sensitivity of the second touch stage is improved and the touch effect of the touch display panel is improved on the premise of ensuring that normal touch can be realized at different touch stages. Particularly, when the active pen is in touch control, on one hand, the detection precision of the touch position of the active pen is improved, and the touch sensitivity and the touch display performance of the touch display panel are improved; on the other hand, due to the reduction of the area of the single touch channel, the background capacitance of the single touch channel is effectively reduced, the driving power consumption of the external driving equipment is reduced, and the service life of the external driving equipment is prolonged.
Based on the foregoing embodiment, with reference to fig. 3, optionally, the first touch channel 21011 includes a plurality of first touch electrodes 201, the second touch channel 2102 includes a plurality of second touch electrodes 202, and the first touch electrodes 201 and the second touch electrodes 202 are disposed in the same layer; the contact area between the second touch main body and the touch display panel 200 is larger than the area of the inscribed circle of the first touch electrode 201 and the second touch electrode 202.
Illustratively, as shown in fig. 2 and 3, the first touch channel 21011 is configured to include a plurality of first touch electrodes 201, the second touch channel 2102 includes a plurality of second touch electrodes 202, the first touch electrodes 201 are disposed in a same layer as the second touch electrodes 202 and are electrically insulated from the second touch electrodes 202, as shown in fig. 2 and 3, the first touch electrodes 201 and the second driving electrodes 202 may be diamond-shaped or have other shapes, which is not limited herein. By setting the contact area of the second touch main body and the touch display panel 200 to be larger than the area of the inscribed circle of the first touch electrode 201 and the second touch electrode 202, the second touch main body, such as the tip of the active pen, can simultaneously contact the first touch channel 21011 and the second touch channel 21021, and the touch signals generated by the first touch electrode 201 and the second touch electrode 202 contacting the second touch main body are changed. At this time, the first touch channel 21011 in the same first touch channel group 2101 alternately transmits the touch sensing signal to the driver chip, and the same second touch channel group 2102The second touch channel 21021 alternately transmits touch sensing signals to the driving chip, and the touch display panel 200 performs touch display according to the received touch sensing signals. For example, the width L of each touch channel group may be 4mm, and the active pen tip diameter D is typically around 1.5 mm. When the first touch channel group 2101 includes two first touch channels 21011 and the second touch channel group 2102 includes two second touch channels 21012, the inscribed circle diameter a of the first touch electrode 201 and the second touch electrode 202 is
Figure BDA0003085371540000111
D is more than a. Therefore, the pen point of the active pen can simultaneously contact the first touch channel 21011 and the second touch channel 21021, and simultaneously transmit a touch driving signal to the first touch channel 21011 and the second touch channel 21021, so that the driving chip can obtain the position information of the active pen in the first direction and the second direction, and complete the active pen touch control. Further, the first touch channel 21011 in the same first touch channel group 2101 alternately transmits a touch sensing signal to the driver chip, and the second touch channel 21021 in the same second touch channel group 2102 alternately transmits a touch sensing signal to the driver chip, and only one first touch channel and one sensing signal on the second touch channel exist at the same time, so that accurate touch of the active pen is realized. Furthermore, as the area of the touch electrode is smaller than the area of the pen point of the active pen, the driving power consumption of the driving of the active pen is smaller, and the energy consumption of external driving equipment is reduced.
The following description will take a self-contained touch display panel as an example.
As a possible embodiment, fig. 5 is a schematic structural diagram of another touch display panel provided in the embodiment of the present invention; fig. 6 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention; fig. 7 is a schematic structural diagram of another touch display panel according to an embodiment of the invention; fig. 8 is a schematic structural diagram of another touch display panel according to an embodiment of the invention. As shown in fig. 5-8, optionally, the touch display panel 200 includes a self-contained touch display panel, and the at least two touch channels 230 include at least a first self-contained touch electrode 301 and a second self-contained touch electrode 302;
in the first touch stage, the first self-contained touch electrode 301 and the second self-contained touch electrode 302 in the same touch channel group 230 transmit a touch driving signal and transmit a touch sensing signal simultaneously;
in the second touch phase, the first self-capacitance touch electrode 301 and the second self-capacitance touch electrode 302 in the same touch channel set 230 alternately transmit touch sensing signals.
For example, as shown in fig. 5-8, the touch display panel 200 includes a self-contained touch display panel, and the self-contained touch display panel includes at least two touch channels 230, where a touch channel is understood as a self-contained touch electrode block, for example, the touch channel 230 includes at least a first self-contained touch electrode 301 and a second self-contained touch electrode 302. Fig. 5 to 8 only show four possible arrangement manners, and the shape of the self-contained touch electrode may be designed according to an actual manufacturing process, which is not limited herein. For example, as shown in fig. 5-6, each touch channel 230 includes a first self-capacitance touch electrode 301 and a second self-capacitance touch electrode 302, wherein the first self-capacitance touch electrode 301 and the second self-capacitance touch electrode 302 may extend along the Y direction in fig. 5 and be arranged along the X direction, or may extend along the X direction in fig. 6 and be arranged along the Y direction.
In a first touch stage, for example, a finger touch stage, referring to the touch channel group 230 shown in fig. 5 and 6 as an example, a first self-contained touch electrode 301 and a second self-contained touch electrode 302 in the same touch channel group 230 transmit a touch driving signal to a driving chip at the same time, and transmit a touch sensing signal to the driving chip at the same time, the driving chip (not shown in the figure) determines the position and/or pressure of finger touch according to the touch driving signal and the touch sensing signal, and the touch display panel correspondingly displays a touch screen; in a second touch stage, for example, an active pen touch stage, the first self-contained touch electrode 301 and the second self-contained touch electrode 302 in the same touch channel set 230 are converted into touch sensing electrodes, and touch sensing signals are alternately transmitted to the driving chip, the driving chip (not shown in the figure) determines the position and/or pressure of the active pen touch according to the touch sensing signals, and the touch display panel correspondingly displays a touch screen.
Fig. 7 is an example of a single touch channel set 230 including 3 self-contained touch electrodes, and fig. 8 is an example of a single touch channel set 230 including 4 self-contained touch electrodes, it should be noted that, when the touch channel set 230 includes a structure including more than 2 self-contained touch electrodes, the principle of the touch detection stage is the same as the detection principle of the touch channel set 230 including 2 self-contained touch electrodes, and the description thereof is not repeated here.
In summary, for both the mutual capacitance type touch display panel and the self-capacitance type touch display panel, on the basis of the existing touch channels, the touch channel groups are finely divided, so that the area of the touch channels of the touch display panel is further reduced, the number of the touch channels is increased, the touch detection precision is improved, the touch display device meets the finger touch design, simultaneously, the touch performance of the active pen is optimized, and the touch effect of the touch display panel is improved; furthermore, on the basis of the prior art, the area of the touch channels of the touch display panel is further reduced, so that the background capacitance of each touch channel is reduced, and the output power consumption of the active pen is reduced.
On the basis of the foregoing embodiments, as shown in fig. 2 to 8, optionally, the touch display panel 200 further includes a plurality of switch unit groups 241 and a plurality of touch signal lines 251, where the switch unit groups 241 correspond to the touch channel groups one to one, and the touch signal lines 251 correspond to the switch unit groups 241 one to one; each switch unit group 241 includes at least two switch units 240, and the switch units 240 correspond to and are electrically connected to the touch channels one to one;
the touch display panel further includes a plurality of clock signal lines 261, the clock signal lines 261 correspond to the switch units 240 in the switch unit group 241 one by one, and the clock signal lines 261 are electrically connected to the control terminals of the switch units 240;
in the first touch stage, the clock signal line 261 is used for simultaneously transmitting an enable signal to the switch units 240 in the same switch unit group 241, and controlling the switch units 240 in the same switch unit group 241 to be simultaneously turned on;
in the second touch stage, the clock signal line 261 is used to alternately transmit the enable signal to the switch units 240 in the same switch unit group 241, and control the switch units 240 in the same switch unit group 241 to be alternately turned on.
In an embodiment, as shown in fig. 2 to 8, the touch display panel 200 further includes a plurality of switch unit groups 241 and a plurality of touch signal lines 251. Each switch unit group 241 corresponds to a touch channel group one by one, and each touch signal line 251 (see T in fig. 2-8)Xn、RXnAnd TXn/RXnWhere n is a positive integer) corresponds to the switch unit groups one to one, and the touch signal line 251 is used to transmit or receive a touch signal. According to the number of the touch channels in the touch channel group, each switch unit group 241 includes at least two switch units 240, each switch unit 240 includes a transistor or an MOS transistor and has a turn-off function and a turn-on function, and each switch unit 240 corresponds to and is electrically connected to a touch channel one to one. For example, in fig. 2, the single touch channel group 210 includes two switch units 240, and in fig. 7, the single touch channel group 230 includes 3 switch units 240. Meanwhile, clock signal lines 261 (shown as SWn in fig. 2 to 8, where n is a positive integer) are provided in one-to-one correspondence with the switch units 240, and the clock signal lines 261 transmit enable signals to the switch units 240 through control terminals of the switch units 240 to control the switch units 240 to be turned on or off.
For example, the light-on unit can be controlled to be turned on or off by transmitting high and low level signals at preset time intervals. As shown in table 1, the high and low levels of the enable signal are represented by 1 and 0, respectively, with 1 corresponding to the state where the transistor (switching unit) is on and 0 corresponding to the state where the transistor is off.
TABLE 1 level State of SW signals in touch phase
Figure BDA0003085371540000151
As shown in fig. 3 and table 1, when the first touch phase, for example, the finger touch phase, the clock signal line 261(SW1, SW2, SW3 and SW4) transmits the enable signal to the switch unit 240 in the same switch unit group at the same time. For example, the clock signal line 261(SW1, SW2, SW3, and SW4) transmits the high level signal 1 at the same time, and controls the switch units 240 in the same switch unit group 241 to be turned on at the same time, so that the two first touch channels 21011 in the same touch channel group 2101 can transmit the touch signals to the driving chip at the same time, at this time, the amount of the finger touch signals is sufficient, and the driving chip (not shown in the figure) confirms the position coordinates of the finger touch according to the touch driving signals and the touch sensing signals, thereby ensuring the accuracy of the finger touch display.
In a second touch phase, for example, in the active pen touch phase, the clock signal line 261(SW1, SW2, SW3, and SW4) alternately transmits an enable signal to the switch units 240 in the same switch unit group, and controls the switch units in the same switch unit group 240 to be alternately turned on, so that the two first touch channels 21011 in the same touch channel group 2101 alternately transmit touch signals to the driver chip, thereby increasing the number of touch signal transmissions and improving the touch detection accuracy.
Optionally, the second touch stage includes a plurality of sub-touch stages, and in the sub-touch stages, the clock signal line is used to control one switch unit in the same switch unit group to be turned on and control the other switch units in the switch unit group to be turned off; in the second touch control stage, the sub-touch control stages corresponding to the transmission enable signal in at least one clock signal line are arranged adjacently, and the sub-touch control stages corresponding to the transmission non-enable signal are arranged adjacently.
For example, with reference to fig. 3 and table 1, a touch display panel with 2 × 2 touch channels is taken as an example. The 4 switch units respectively control the 4 touch channels, the second touch stage comprises 4 sub-touch stages, a t1 sub-touch stage, a t2 sub-touch stage, a t3 sub-touch stage and a t4 sub-touch stage according to the number of the touch channels, and when the second touch stage is detected, a scanning detection cycle for all point positions of the touch display panel is completed at four moments of t1, t1, t1 and t 4. In the sub-control stage, the clock signal line 261 controls one switch unit 240 in the same switch unit group 241 to be turned on, and controls the other switch units 240 in the switch unit group 241 to be turned off, and as shown in fig. 2 to 8, the sub-touch stages corresponding to the transmission enable signal in at least one clock signal line 261 are arranged adjacently, and the sub-touch stages corresponding to the transmission disable signal are arranged adjacently, so that the switching times of high and low level signals of the system output enable signal can be reduced, and the output energy consumption can be reduced. With reference to fig. 3 and table 1, the detection in the second touch phase is as follows:
at the t1 sub-touch stage, the clock signal line 261(SW1, SW2, SW3, and SW4) transmits an enable signal to the control terminal of the switch unit 240. When the enable signals transmitted by the clock signal line 261(SW1) and the clock signal line 261(SW3) are high level signals 1, the corresponding switch unit 240 is controlled to be turned on; the enable signals transmitted by the clock signal lines 261(SW2) and 261(SW4) are high level signals 0, and control the corresponding switch units 240 to be turned off. Referring to fig. 3, a first touch channel 21011 connected to a clock signal line 261(SW1) and a second touch channel 21021 connected to the clock signal line 261(SW3) respectively transmit transmission touch signals; the first touch channel 21011 connected to the clock signal line 261(SW2) and the second touch channel 21021 connected to the clock signal line 261(SW4) have no signal transmission, and touch signal transmission at time t1 is realized.
At the sub-touch stage of t2, the enable signals transmitted by the clock signal line 261(SW1) and the clock signal line 261(SW4) are high level signals 1, and control the corresponding switch unit 240 to be turned on; the enable signals transmitted by the clock signal lines 261(SW2) and 261(SW3) are high level signals 0, and control the corresponding switch units 240 to be turned off. Referring to fig. 3, a first touch channel 21011 connected to a clock signal line 261(SW1) and a second touch channel 21021 connected to the clock signal line 261(SW4) respectively transmit transmission touch signals; the first touch channel 21011 connected to the clock signal line 261(SW2) and the second touch channel 21021 connected to the clock signal line 261(SW3) are not signal-transmitted, and touch signal transmission at time t2 is realized.
At the sub-touch stage of t3, the enable signals transmitted by the clock signal line 261(SW2) and the clock signal line 261(SW4) are high level signals 1, and control the corresponding switch unit 240 to be turned on; the enable signals transmitted by the clock signal lines 261(SW1) and 261(SW3) are high level signals 0, and control the corresponding switch units 240 to be turned off. Referring to fig. 3, a first touch channel 21011 connected to a clock signal line 261(SW2) and a second touch channel 21021 connected to the clock signal line 261(SW4) respectively transmit transmission touch signals; the first touch channel 21011 connected to the clock signal line 261(SW1) and the second touch channel 21021 connected to the clock signal line 261(SW3) are not signal-transmitted, and touch signal transmission at time t3 is realized.
At the sub-touch stage of t4, the enable signals transmitted by the clock signal line 261(SW2) and the clock signal line 261(SW3) are high level signals 1, and control the corresponding switch unit 240 to be turned on; the enable signals transmitted by the clock signal lines 261(SW1) and 261(SW4) are high level signals 0, and control the corresponding switch units 240 to be turned off. Referring to fig. 3, a first touch channel 21011 connected to a clock signal line 261(SW2) and a second touch channel 21021 connected to the clock signal line 261(SW3) respectively transmit transmission touch signals; the first touch channel 21011 connected to the clock signal line 261(SW1) and the second touch channel 21021 connected to the clock signal line 261(SW4) have no signal transmission, and touch signal transmission at time t4 is realized.
It should be noted that, the time instants t1, t1, t1 and t4 are not consecutive, and preferably, the detection is performed cyclically according to the time sequence shown in table 1, and since the enable signals at the time instants t1 and t2 are the same, the number of times of switching the high-level signal and the low-level signal transmitted by the clock signal line 261(SW1) and the clock signal line 261(SW2) is the smallest, the frequency is the lowest, and the driving power consumption can be effectively reduced.
Further, taking the touch display panel as a self-contained touch display panel as an example, the number of sub-touch stages in the second touch stage is related to the number of touch channels in the touch channel set. Referring to fig. 7 and table 2, the second touch phase includes a 3-sub-touch phase, a t1 sub-touch phase, a t2 sub-touch phase, and a t3 sub-touch phase. As shown in table 2, the high and low levels of the enable signal SW are represented by 1 and 0, respectively, with 1 corresponding to the state where the transistor (switching unit) is on and 0 corresponding to the state where the transistor is off.
TABLE 2 level states of SW signals in touch phase
Figure BDA0003085371540000181
At the sub-touch stage of t1, the enable signal transmitted by the clock line 261(SW1) is a high level signal 1, and the enable signal transmitted by the clock line 261(SW2, SW3, and SW4) is a low level signal 0. The clock signal line 261(SW1) controls the corresponding switch unit 240 to be turned on, and controls the other switch units 240 in the switch unit group to be turned off, so that the second self-capacitance touch electrode 302 transmits a touch driving signal to the driving chip and simultaneously transmits a touch sensing signal to the driving chip;
at the sub-touch stage of t2, the enable signal transmitted by the clock line 261(SW2) is a high level signal 1, and the enable signal transmitted by the clock line 261(SW1, SW3, and SW4) is a low level signal 0. The clock signal line 261(SW2) controls the corresponding switch unit 240 to be turned on, and controls the other switch units in the switch unit group to be turned off, so that the first self-capacitance touch electrode 301 transmits a touch driving signal to the driving chip, and simultaneously transmits a touch sensing signal to the driving chip;
at the sub-touch stage of t3, the enable signal transmitted by the clock line 261(SW3) is a high level signal 1, and the enable signal transmitted by the clock line 261(SW1, SW2, and SW4) is a low level signal 0. The corresponding switch unit 240 is controlled to be turned on through the clock signal line 261(SW2), and the other switch units in the switch unit group are controlled to be turned off, so that the third self-capacitance touch electrode 303 transmits a touch driving signal to the driving chip and simultaneously transmits a touch sensing signal to the driving chip;
one switch unit 240 in the same switch unit group 241 is controlled to be turned on through the clock signal line 261, and the other switch units 240 in the switch unit group are controlled to be turned off, so that the function of alternately transmitting touch signals to the touch channels in the same touch channel group is realized, and the touch display precision is improved.
On the basis of the above embodiment, the touch display panel includes a display area and a non-display area, the non-display area at least partially surrounds the display area; the non-display area comprises a bending area and a switch unit group setting area, the bending area is arranged between the switch unit group setting area and the display area, and the switch unit group setting area is located on the non-light-emitting side of the display area.
Illustratively, the touch display panel includes a display area and a non-display area, the display area is used for touch control and display, the non-display area at least partially surrounds the display area, and the non-display area includes a bending area and a switch unit group setting area. The switch unit group setting area is provided with various data lines, signal lines, switch transistors and the like, the bending area is arranged between the switch unit group setting area and the display area, the touch display panel can be bent in the bending area, the switch unit setting area is bent to the non-light-emitting side of the display area, and the touch display panel of the full-screen is guaranteed to be achieved.
Based on the same inventive concept, fig. 9 is a flowchart illustrating a driving method of a touch display panel according to an embodiment of the present invention. The embodiment of the invention also provides a driving method of the touch display panel, which is used for driving the touch display panel provided by any embodiment of the invention. As shown in fig. 9, the driving method of the touch display panel includes:
s01, in the first touch stage, the touch channels in the same touch channel group are controlled to transmit touch signals simultaneously.
For example, referring to fig. 2, a touch display panel 200 with 2 × 2 touch channels is taken as an example for explanation, and in the first touch phase. For example, in the finger touch stage, when the touch display panel 200 performs finger touch, since the contact area between the finger surface and the touch display panel 200 can simultaneously cover all the touch channels 211 in the same touch channel group 210, all the touch channels 211 in the same touch channel group 210 can simultaneously transmit touch signals to the driver chip, and the amount of the finger touch signals is sufficient, thereby ensuring the accuracy of finger touch display.
S02, in the second touch stage, the touch channels in the same touch channel group are controlled to alternately transmit the touch signals. The first touch main body is different from the second touch main body, and the contact area of the first touch main body and the touch display panel is larger than that of the second touch main body and the touch display panel.
For example, referring to fig. 2, when the active pen touches, the touch channels 211 in the same touch channel group 210 are set to alternately transmit touch signals to the driver chip, and the two touch channels 211 in the same touch channel group 210 alternately transmit touch signals to the driver chip.
In summary, the driving method provided in this embodiment is used to drive the touch display panel, and by controlling different working processes of the touch channels in the touch channel group at different touch stages, on the premise of ensuring that normal touch can be realized at different touch stages, the touch sensitivity at the second touch stage is improved, so that the touch display device satisfies the finger touch design, and simultaneously, the touch performance of the active pen is optimized, thereby improving the touch precision and display performance of the touch display device.
Optionally, the touch display panel includes a mutual capacitance touch display panel, the touch channel group includes a first touch channel group and a second touch channel group, the first touch channel group includes at least two first touch channels, and/or the second touch channel group includes at least two second touch channels.
The first touch channels extend along a first direction, and at least two first touch channels are arranged along a second direction; the second touch channels extend along a second direction, and at least two second touch channels are arranged along the first direction; the first direction and the second direction intersect.
Illustratively, with continued reference to fig. 3 and 4, touch display panel 200 comprises a mutually-inclusive touch display panel, touch channel group 210 comprises a first touch channel group 2101 and a second touch channel group 2102, the first touch channel group 2101 comprises at least two first touch channels 21011, and/or the second touch channel group 2102 comprises at least two second touch channels 21021. The first touch channel 21011 may be a touch driving channel, and the second touch channel 21021 may be a touch sensing channel.
In a first touch stage, controlling touch channels in the same touch channel group to transmit touch signals simultaneously includes:
and in the first touch stage, controlling a first touch channel in the same first touch channel group to simultaneously transmit a touch driving signal, and controlling a second touch channel in the same second touch channel group to simultaneously transmit a touch sensing signal.
Illustratively, referring to fig. 3, when in the first touch stage, for example, the finger touch stage, the first control channel group 2101 and/or the first control channel group 2102 may be covered due to the large contact area between the finger surface and the touch display panel 200. By controlling the first touch channel 21011 in the same first touch channel group 2101 to simultaneously transmit touch driving signals and the second touch channel 21021 in the same second touch channel group 2102 to simultaneously transmit touch sensing signals, the amount of finger touch signals is sufficient, and the accuracy of finger touch display is ensured.
In a second touch stage, controlling the touch channels in the same touch channel group to alternately transmit touch signals, including:
and in the second touch control stage, controlling the first touch control channels in the same first touch control channel group to alternately transmit touch control induction signals, and/or controlling the second touch control channels in the same second touch control channel group to alternately transmit touch control induction signals.
For example, referring to fig. 3, in a second touch phase, for example, an active pen touch phase, since the active pen is an external driving device, the first touch channel set 2101 and the second touch channel set 2102 are both touch sensing channels for receiving a touch sensing signal. When the active pen touches, when the pen point of the active pen has a contact area with the first touch channel group 2101, the first touch channel 21011 in the same first touch channel group 2101 is controlled to alternately transmit a touch sensing signal to the driving chip, and when the pen point of the active pen has a contact area with the second touch channel group 2102, the second touch channel 21021 in the same second touch channel group 2102 is controlled to alternately transmit a touch sensing signal to the driving chip; when the pen point of the active pen has contact areas with both the first touch channel 21011 and the second touch channel set 2102, the first touch channel 21011 in the same first touch channel set 2101 alternately transmits a touch sensing signal to the driving chip and the second touch channel 21021 in the same second touch channel set 2102 alternately transmits a touch sensing signal to the driving chip.
The driving method provided by the embodiment of the invention is adopted to drive the mutual capacitance type touch display panel, so that the detection precision of the touch position of the active pen can be improved, and the touch sensitivity and the touch display performance of the touch display panel can be improved.
Optionally, the touch display panel includes a self-contained touch display panel, and the at least two touch channels include at least a first self-contained touch electrode and a second self-contained touch electrode.
For example, as shown in fig. 5-8, the touch display panel 200 includes a self-contained touch display panel, the self-contained touch display panel includes at least two touch channels 230, and the touch channels 230 include at least a first self-contained touch electrode 301 and a second self-contained touch electrode 302. Of these, fig. 5-8 only show four possible arrangements
In a first touch stage, controlling touch channels in the same touch channel group to transmit touch signals simultaneously includes:
and in the first touch control stage, controlling a first self-capacitance touch control electrode and a second self-capacitance touch control electrode in the same touch control channel group to simultaneously transmit a touch control driving signal and simultaneously transmit a touch control induction signal.
Illustratively, when the first touch stage is a finger touch stage, for example. Continuing with the example of the touch channel set 230 shown in fig. 5 and fig. 6, the first self-contained touch electrode 301 and the second self-contained touch electrode 302 in the touch channel set 230 are controlled to simultaneously transmit the touch driving signal to the driving chip and simultaneously transmit the touch sensing signal to the driving chip, so that the touch display panel 200 correspondingly displays the touch screen.
In a second touch stage, controlling the touch channels in the same touch channel group to alternately transmit touch signals, including:
and in the second touch control stage, controlling the first self-capacitance touch control electrode and the second self-capacitance touch control electrode in the same touch control channel group to alternately transmit touch control induction signals.
Illustratively, with continued reference to fig. 5 and 6, during a second touch phase, e.g., an active pen touch phase. At this time, the first self-contained touch electrode 301 and the second self-contained touch electrode 302 in the touch channel set 230 are converted into touch sensing electrodes, and the touch sensing signals are alternately transmitted to the driving chip, so that the touch display panel 200 correspondingly displays a touch screen.
The self-contained touch display panel is driven by the driving method provided by the embodiment, so that the detection precision of the touch position of the active pen can be improved, and the touch sensitivity and the touch display performance of the touch display panel are improved.
Based on the same inventive concept, an embodiment of the present invention further provides a touch display device, and fig. 10 is a schematic structural diagram of the touch display device according to the embodiment of the present invention. As shown in fig. 10, the touch display device 300 includes the touch display panel 200 according to any embodiment of the present invention, and therefore, the touch display device 300 according to the embodiment of the present invention has the technical effects of the technical solutions in any of the embodiments, and the explanations of the structures and terms that are the same as or corresponding to the embodiments are not repeated herein. The touch display device 300 provided in the embodiment of the present invention may further include a driving chip, and the touch display device 300 may be a mobile phone shown in fig. 10, and may also be any electronic product with a display function, including but not limited to the following categories: the touch screen display system comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited in this respect.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that the embodiments and features of the embodiments described herein may be combined with each other without conflict. Numerous variations, rearrangements, combinations, and substitutions will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (11)

1. A touch display panel is characterized by comprising a plurality of touch channel groups, wherein each touch channel group comprises at least two touch channels;
in a first touch stage, a first touch main body is contacted with the touch display panel, and touch signals are transmitted by touch channels in the same touch channel group at the same time;
in a second touch stage, a second touch main body is contacted with the touch display panel, and touch signals are alternately transmitted by touch channels in the same touch channel group; the first touch main body is different from the second touch main body, and the contact area of the first touch main body and the touch display panel is larger than that of the second touch main body and the touch display panel.
2. The touch display panel according to claim 1, wherein the touch display panel comprises a mutually-inclusive touch display panel, the touch channel set comprises a first touch channel set and a second touch channel set, the first touch channel set comprises at least two first touch channels, and/or the second touch channel set comprises at least two second touch channels;
the first touch channels extend along a first direction, and at least two first touch channels are arranged along a second direction; the second touch channels extend along the second direction, and at least two second touch channels are arranged along the first direction; the first direction and the second direction intersect;
in the first touch control stage, a first touch control channel in the same first touch control channel group transmits a touch control driving signal at the same time, and a second touch control channel in the same second touch control channel group transmits a touch control induction signal at the same time;
and in the second touch control stage, the same first touch control channel in the first touch control channel group alternately transmits touch control induction signals, and/or the same second touch control channel in the second touch control channel group alternately transmits touch control induction signals.
3. The touch display panel according to claim 2, wherein the first touch channel comprises a plurality of first touch electrodes, the second touch channel comprises a plurality of second touch electrodes, and the first touch electrodes and the second touch electrodes are disposed on the same layer;
the contact area of the second touch main body and the touch display panel is larger than the area of the inscribed circle of the first touch electrode and the second touch electrode.
4. The touch display panel of claim 1, wherein the touch display panel comprises a self-contained touch display panel, and at least two of the touch channels comprise at least a first self-contained touch electrode and a second self-contained touch electrode;
in the first touch control stage, a first self-capacitance touch control electrode and a second self-capacitance touch control electrode in the same touch control channel group simultaneously transmit a touch control driving signal and simultaneously transmit a touch control induction signal;
and in the second touch control stage, the first self-capacitance touch control electrode and the second self-capacitance touch control electrode in the same touch control channel group alternately transmit touch control induction signals.
5. The touch display panel according to claim 1, further comprising a plurality of switch unit groups and a plurality of touch signal lines, wherein the switch unit groups correspond to the touch channel groups one to one, and the touch signal lines correspond to the switch unit groups one to one; each switch unit group comprises at least two switch units, and the switch units are in one-to-one correspondence with and electrically connected with the touch channels;
the touch display panel further comprises a plurality of clock signal lines, the clock signal lines correspond to the switch units in the switch unit group one by one, and the clock signal lines are electrically connected with the control ends of the switch units;
in the first touch control stage, the clock signal line is used for transmitting enabling signals to the switch units in the same switch unit group at the same time and controlling the switch units in the same switch unit group to be conducted at the same time;
in the second touch control stage, the clock signal line is used for alternately transmitting enable signals to the switch units in the same switch unit group to control the switch units in the same switch unit group to be alternately conducted.
6. The touch display panel according to claim 5, wherein the second touch phase includes a plurality of sub-touch phases, and in the sub-touch phases, the clock signal line is used to control one of the switch units in the same switch unit group to be turned on and control the rest of the switch units in the switch unit group to be turned off;
in the second touch control stage, sub-touch control stages corresponding to the transmission enable signal in at least one clock signal line are arranged adjacently, and sub-touch control stages corresponding to the transmission non-enable signal are arranged adjacently.
7. The touch display panel of claim 5, wherein the touch display panel comprises a display area and a non-display area, the non-display area at least partially surrounding the display area;
the non-display area includes bending area and switch unit group setting district, the bending area set up in the switch unit group setting district with between the display area, the switch unit group sets up the position in the non-light-emitting side in display area.
8. A driving method of a touch display panel, for driving the touch display panel according to any one of claims 1 to 7; the driving method includes:
controlling touch channels in the same touch channel group to transmit touch signals at the same time in a first touch stage;
controlling the touch channels in the same touch channel group to alternately transmit touch signals in a second touch stage; the first touch main body is different from the second touch main body, and the contact area of the first touch main body and the touch display panel is larger than that of the second touch main body and the touch display panel.
9. The driving method according to claim 8, wherein the touch display panel comprises a mutually-inclusive touch display panel, the touch channel set comprises a first touch channel set and a second touch channel set, the first touch channel set comprises at least two first touch channels, and/or the second touch channel set comprises at least two second touch channels;
the first touch channels extend along a first direction, and at least two first touch channels are arranged along a second direction; the second touch channels extend along the second direction, and at least two second touch channels are arranged along the first direction; the first direction and the second direction intersect;
in a first touch stage, controlling touch channels in the same touch channel group to transmit touch signals simultaneously includes:
in the first touch control stage, controlling a first touch control channel in the same first touch control channel group to simultaneously transmit a touch control driving signal, and controlling a second touch control channel in the same second touch control channel group to simultaneously transmit a touch control induction signal;
in a second touch stage, controlling touch channels in the same touch channel group to alternately transmit touch signals, including:
and in a second touch control stage, controlling a first touch control channel in the same first touch control channel group to alternately transmit touch control induction signals, and/or controlling a second touch control channel in the same second touch control channel group to alternately transmit touch control induction signals.
10. The driving method according to claim 8, wherein the touch display panel comprises a self-contained touch display panel, and at least two of the touch channels comprise at least a first self-contained touch electrode and a second self-contained touch electrode;
in a first touch stage, controlling touch channels in the same touch channel group to transmit touch signals simultaneously includes:
controlling a first self-capacitance touch electrode and a second self-capacitance touch electrode in the same touch channel group to simultaneously transmit a touch driving signal and simultaneously transmit a touch sensing signal at the first touch stage;
in a second touch stage, controlling touch channels in the same touch channel group to alternately transmit touch signals, including:
and in the second touch control stage, controlling the first self-capacitance touch control electrode and the second self-capacitance touch control electrode in the same touch control channel group to alternately transmit touch control induction signals.
11. A touch display device comprising the touch display panel of any one of claims 1-7.
CN202110578596.3A 2021-05-26 2021-05-26 Touch display panel, driving method thereof and touch display device Pending CN113268160A (en)

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CN112083836A (en) * 2020-09-09 2020-12-15 京东方科技集团股份有限公司 Touch panel, driving method thereof and touch display device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140111464A1 (en) * 2012-10-18 2014-04-24 Vemund Kval Bakken Touch Sensor With Simultaneously Driven Drive Electrodes
CN106201141A (en) * 2016-07-15 2016-12-07 上海中航光电子有限公司 A kind of contact panel and touch control display apparatus
CN112083836A (en) * 2020-09-09 2020-12-15 京东方科技集团股份有限公司 Touch panel, driving method thereof and touch display device

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Application publication date: 20210817