Display panel and display device

Abstract

The utility model provides a display panel and a display device, and belongs to the technical field of display. The display panel comprises a substrate, a plurality of sub-pixels, a plurality of grid lines and a plurality of data lines, wherein the sub-pixels, the grid lines and the data lines are arranged on the substrate; the grid lines and the data lines are arranged in a crossed manner, and the sub-pixels are electrically connected with one grid line and one data line; each sub-pixel comprises a first electrode, a light-emitting layer and a second electrode which are sequentially arranged in the direction away from the substrate. The data line is arranged on one side, close to the substrate, of the first electrode; at least part of the data lines are multiplexed as first touch electrodes; the second electrodes in at least part of the sub-pixels are arranged at intervals, and the second electrodes are multiplexed as second touch electrodes; the orthographic projections of the first touch electrodes and the second touch electrodes on the substrate body intersect with each other in the extending directions of the first touch electrodes and the second touch electrodes.

Description

Technical Field

[0001] The present disclosure belongs to the field of display technology, and particularly relates to a display panel and a display device. Background Art

[0002] As a new generation of display technology, organic light-emitting diode (OLED) display panel has better display performance than liquid crystal display (LCD) panel. It has the advantages of good display effect, low power consumption, high flexibility and ultra-lightness, and is widely used.

[0003] Touchscreen technologies used in display panels generally fall into two categories: On-Cell technology, which places a touchscreen substrate between a color filter substrate and a polarizer; and In-Cell technology, which embeds touchscreen functionality within liquid crystal pixels. In-Cell technology is primarily used in liquid crystal display panels. On-Cell technology offers a lower design complexity than In-Cell technology, but its accuracy and sensitivity are somewhat reduced. Currently, with users demanding high touchscreen accuracy and sensitivity, embedding touchscreen functionality within OLED pixels in OLED display panels presents challenges. Utility Model Content

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art and provide a display panel and a display device.

[0005] In a first aspect, a technical solution adopted to solve the technical problem of the present disclosure is a display panel, comprising a base substrate, a plurality of sub-pixels arranged on the base substrate, a plurality of gate lines, and a plurality of data lines; the gate lines and the data lines are arranged to intersect, and the sub-pixels are electrically connected to one of the gate lines and one of the data lines;

[0006] The sub-pixel includes a first electrode, a light-emitting layer, and a second electrode arranged in sequence along a direction away from the base substrate; the data line is arranged on a side of the first electrode close to the base substrate; at least some of the multiple data lines are reused as first touch electrodes; the second electrodes in at least some of the sub-pixels are arranged at intervals, and the second electrodes are reused as second touch electrodes; the orthographic projections of the first touch electrode and the second touch electrode on the base substrate intersect with each other in their respective extension directions.

[0007] In some embodiments, the gate lines extend along a first direction, and the data lines extend along a second direction;

[0008] The plurality of sub-pixels are divided into a plurality of sub-pixel groups arranged side by side along the second direction, each of the sub-pixel groups including a plurality of sub-pixels arranged side by side along the first direction;

[0009] The data lines are divided into a plurality of data line groups arranged side by side along the first direction, each data line group includes a plurality of data lines, and the plurality of data lines in a data line group are multiplexed into a first touch electrode;

[0010] The second electrodes of each of the sub-pixels in a group of the sub-pixel groups are connected into an electrode strip, or the second electrodes of multiple groups of the sub-pixel groups continuously adjacent in the second direction are connected into an electrode strip; different electrode strips are arranged at intervals; and one electrode strip is reused as one of the second touch electrodes.

[0011] In some embodiments, any one of the data line groups includes a first data line and a second data line; in the touch control phase, the first data line is multiplexed as the first touch electrode; the second data line is loaded with a constant voltage or is floating;

[0012] In the display phase, both the first data line and the second data line are loaded with display data signals.

[0013] In some embodiments, the plurality of data line groups include a first data line group and a second data line group;

[0014] In the touch control stage, the plurality of data lines in the first data line group are multiplexed as the first touch control electrodes, and the plurality of data lines in the second data line group are loaded with a constant voltage, or the plurality of data lines in the second data line group are floated;

[0015] In the display phase, the data lines in the first data line group and the second data line group are all loaded with display data signals.

[0016] In some embodiments, the display panel further includes a redundant electrode disposed in the same layer as the second touch electrode; the redundant electrode is spaced apart from the second touch electrode.

[0017] In some embodiments, the display panel further includes a driving circuit; the driving circuit is electrically connected to each of the data lines;

[0018] The driving circuit is configured to provide a display data signal to the data line in a display phase to display an image; and to provide a touch driving signal to the data line in a touch phase to identify a touch position;

[0019] For a frame signal output timing, the output timing of the display data signal is before the output timing of the touch driving signal.

[0020] In some embodiments, the display panel further comprises a selection circuit; the selection circuit comprises a plurality of multi-way selection sub-circuits; the touch control phase comprises a mutual capacitance scanning phase;

[0021] In the mutual capacitance scanning stage, the first end of the multi-way selection sub-circuit is electrically connected to the data line, the second end is electrically connected to the first end of the first data lead, the third end is floating, and the control end is electrically connected to the drive circuit; the second end of the first data lead is electrically connected to the drive circuit.

[0022] In some embodiments, for any group of the data lines, during the mutual capacitance scanning phase, the touch driving signals loaded on the data lines are the same;

[0023] The first touch electrodes include N; in the mutual capacitance scanning stage, the moment when the touch drive signal loaded by the i-th first touch electrode jumps from the first level to the second level is the first moment, and the moment when the touch drive signal loaded by the i+1-th first touch electrode jumps from the second level to the first level is the second moment; the first moment and the second moment are the same; i is an integer between 1 and (N-1).

[0024] In some embodiments, the touch control phase further includes a self-capacitance scanning phase; the output timing of the self-capacitance scanning phase is after the output timing of the mutual-capacitance scanning phase, and the self-capacitance scanning phase includes continuous and alternating driving sub-phases and reading sub-phases;

[0025] In the driving sub-phase, the first end of the multiplexer sub-circuit is electrically connected to the data line, the second end is electrically connected to the first end of the first data lead, and the third end is floating; the second end of the first data lead is electrically connected to the driving circuit;

[0026] In the reading sub-phase, the first end of the multi-way selection sub-circuit is electrically connected to the data line, the second end is floating, and the third end is electrically connected to the first end of the second data lead; the second ends of multiple second data leads are all electrically connected to the third data lead, and the third data lead is electrically connected to the driving circuit.

[0027] In some embodiments, during the self-capacitive scanning phase, the waveforms of the signals loaded on each of the data lines and each of the gate lines are the same.

[0028] In some embodiments, the touch control stage further includes an active pen touch control stage; the output timing of the active pen scan stage is after the output timing of the mutual capacitance scan stage;

[0029] In the active pen touch stage, the first end of the multi-way selection sub-circuit is electrically connected to the data line, the second end is floating, and the third end is electrically connected to the first end of the second data lead; the second ends of multiple second data leads are all electrically connected to the third data lead, and the third data lead is electrically connected to the driving circuit.

[0030] In some embodiments, the sub-pixel includes a light-emitting device and a pixel driving circuit for driving the light-emitting device; the pixel driving circuit includes at least a first transistor for data writing; one of the data lines is electrically connected to the first stage of the first transistor, and one of the gate lines is electrically connected to the control electrode of the first transistor; the first transistor is turned off during the touch stage.

[0031] In some embodiments, the display panel includes a first conductive layer, a first insulating layer, a second conductive layer, a second insulating layer, a third conductive layer, a pixel defining layer, and a second electrode layer, which are sequentially arranged in a direction away from the base substrate; the pixel defining layer has a pixel opening for defining the light-emitting layer;

[0032] The data line is located in the first conductive layer, the first electrode is located in the third conductive layer, and the second electrode is located in the second electrode layer;

[0033] The second conductive layer includes a transfer electrode; the orthographic projection of the second touch electrode on the base substrate overlaps with the orthographic projection of the transfer electrode on the base substrate; the second touch electrode is electrically connected to the transfer electrode through a first connecting via hole that sequentially passes through the pixel defining layer and the second insulating layer; the orthographic projection of the first connecting via hole on the base substrate is located between the orthographic projections of two adjacent sub-pixels on the base substrate; the transfer electrode is electrically connected to the driving circuit.

[0034] In some embodiments, a partition structure is further provided on a side of the pixel defining layer facing away from the third conductive layer, and the partition structure is used to partition the second electrode layer to form the second touch electrode.

[0035] In a second aspect, an embodiment of the present disclosure further provides a display device, which includes a display panel as described in any one of the first aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic plan view of a display panel provided in an embodiment of the present disclosure;

[0037] Figure 2 A schematic cross-sectional view of a display panel provided in an embodiment of the present disclosure;

[0038] Figure 3 A schematic diagram of a touch electrode structure provided in an embodiment of the present disclosure;

[0039] Figure 4 A circuit diagram of a pixel driving circuit provided in an embodiment of the present disclosure;

[0040] Figure 5 A timing diagram of a control circuit of a display panel provided in an embodiment of the present disclosure;

[0041] Figure 6 A schematic diagram of a data line group provided in an embodiment of the present disclosure;

[0042] Figure 7a A schematic diagram of multiple data line groups provided by an embodiment of the present disclosure;

[0043] Figure 7b A schematic diagram of another plurality of data line groups provided in an embodiment of the present disclosure;

[0044] Figure 8 A schematic diagram of the electrical connection state of a multi-way selection sub-circuit provided in an embodiment of the present disclosure;

[0045] Figure 9 A schematic diagram of the electrical connection state of another multi-way selection sub-circuit provided in an embodiment of the present disclosure;

[0046] Figure 10 A schematic diagram of a second touch electrode provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the disclosure for which protection is sought, but merely represents selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0048] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0049] In this disclosure, "multiple or several" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0050] In related technologies, the pixel drive circuits of OLED display panels are complex, and the touch function is embedded in the design of the OLED pixels, resulting in mutual influence between the touch electrodes and the display pixels. The main impacts of the touch electrodes on the pixels include: the touch electrodes, as an independent touch electrode layer, are sandwiched between the metal layer where the anode of the light-emitting device is located and the source / drain electrode layer of the switching transistor. This touch electrode layer further increases the pixel load (such as parasitic capacitance) and takes up wiring space for the display pixels, increasing costs while also reducing the display pixel density (Pixels Per Inch, PPI). The impact of pixels on touch electrodes mainly includes: the insulating layer in the pixel driving circuit is thin, and the coupling capacitance between the touch electrode and the pixel driving circuit is large, which will cause the charging and discharging time of the touch electrode to be prolonged and the waveform frequency of the touch driving signal to be reduced, making it difficult to achieve a higher touch reporting rate (that is, the touch reporting frequency, which refers to the number of touch information reported upward by the touch screen per second), and it is also difficult to improve the touch accuracy. It is also necessary to further increase the driving voltage of the touch electrode to reduce the signal attenuation at the end of the touch electrode away from the driving chip and the resulting signal-to-noise ratio (SNR).

[0051] In view of this, an embodiment of the present disclosure provides a display panel, Figure 1 A schematic plan view of a display panel provided in an embodiment of the present disclosure is shown in FIG. Figure 1As shown, the display panel includes a base substrate 1, a plurality of sub-pixels 2 arranged on the base substrate 1, a plurality of gate lines Gate and a plurality of data lines Data; the gate lines Gate and the data lines Data are arranged to cross each other, and the sub-pixels 2 are electrically connected to a gate line Gate and a data line Data.

[0052] Here, the display panel has a display area AA and a peripheral area BB surrounding the display area AA. Multiple sub-pixels 2 are located in the display area AA. The gate line Gate and the data line Data are arranged crosswise, extending from the display area AA to both ends to the peripheral area BB; the gate line Gate is electrically connected to the gate drive circuit 01 (GOA), and the data line Data is electrically connected to the drive circuit 02 (that is, the source drive circuit). Exemplarily, the drive circuit 02 can be a touch and display driver integrated circuit (TDDI). The gate drive circuit 01 and the drive circuit 02 are both located in the peripheral area BB.

[0053] The gate line Gate extends along a first direction X, and the data line Data extends along a second direction Y. The first direction X and the second direction Y are arranged to intersect. This disclosure uses the example that the first direction X and the second direction Y are mutually perpendicular in the plane where the substrate 1 is located, the first direction X is a horizontal direction, and the second direction Y is a vertical direction; the thickness direction of the substrate 1 is recorded as a third direction Z, and the third direction Z is a vertical direction that is perpendicular to the plane where the substrate 1 is located. That is, the first direction X, the second direction Y, and the third direction Z are mutually perpendicular to each other, but this does not constitute a limitation to this disclosure.

[0054] Optionally, the plurality of sub-pixels 2 include multiple rows and multiple columns. The gate lines Gate extend along the row direction, and the data lines Data extend along the column direction. The row direction is also the first direction X, and the column direction is also the second direction Y. A gate line Gate electrically connects a row of sub-pixels 2 in the direction in which it extends, and a column of data lines Data electrically connects a column of sub-pixels 2 in the direction in which it extends.

[0055] For example, in a Real RGB pixel arrangement, the orthographic projection of a pixel on substrate 1 is a rectangle. Each pixel is divided into three sub-pixels 2: red, green, and blue. This Real RGB pixel arrangement ensures stability and reliability in high-resolution displays.

[0056] Figure 2 A schematic cross-sectional view of a display panel provided in an embodiment of the present disclosure is shown. Figure 3 A schematic diagram of a touch electrode structure provided in an embodiment of the present disclosure, such as Figure 2 and Figure 3As shown, the sub-pixel 2 includes a first electrode 21, a light-emitting layer 23, and a second electrode 22, which are arranged in sequence along a direction away from the base substrate 1; a data line Data is arranged on the side of the first electrode 21 close to the base substrate 1; at least some of the multiple data lines Data are reused as a first touch electrode 31; the second electrodes 22 in at least some sub-pixels 2 are arranged at intervals, and the second electrodes 22 are reused as second touch electrodes 32; the orthographic projections of the first touch electrode 31 and the second touch electrode 32 on the base substrate 1 intersect with each other. One of the first touch electrode 31 and the second touch electrode 32 is a touch drive electrode (Tx), and the other is a touch sensing electrode (Rx). This disclosure uses the example of the first touch electrode 31 being the touch drive electrode (Tx) and the second touch electrode 32 being the touch sensing electrode (Rx).

[0057] The sub-pixel 2 includes a light-emitting device OLED and a pixel driving circuit 02 for driving the light-emitting device OLED. The light-emitting device OLED includes a first electrode 21, a light-emitting layer 23, and a second electrode 22, arranged in sequence along a direction away from the substrate 1. One of the first electrode 21 and the second electrode 22 is an anode, and the other is a cathode. This disclosure uses the first electrode 21 as an anode and the second electrode 22 as a cathode as an example.

[0058] Exemplary are light emitting diodes (LEDs), organic light emitting diodes (OLEDs), quantum dot light emitting diodes (QLEDs), and micro light emitting diodes (including any of Mini-LEDs and Micro-LEDs). Optionally, the light emitting device OLED is an OLED device.

[0059] Figure 4 A circuit diagram of a pixel driving circuit 02 provided in an embodiment of the present disclosure is shown in FIG. Figure 4As shown, the pixel driving circuit 02 includes at least a first transistor M1; a data line Data is electrically connected to the first stage of the first transistor M1, and a gate line Gate is electrically connected to the control electrode of the first transistor M1; the first transistor M1 is turned off during the touch phase t2. Exemplarily, the pixel driving circuit 02 is described using a 4T2C (i.e., 4 transistors and 2 capacitors) circuit structure as an example, but this circuit structure does not limit the present disclosure. The pixel driving circuit 02 includes three switching transistors (M1, M2, M3), a driving transistor M4 and two storage capacitors (C1 and C2). The three switching transistors are a first transistor M1 for data writing, a second transistor M2 for light control, and a third transistor M3 for resetting. The anode of the light-emitting device OLED is electrically connected to the driving transistor M4, and the cathode is electrically connected to the second power line ELVSS (outputting a low-voltage power signal). The first electrode of the second transistor M2 is electrically connected to the first power line ELVDD (outputting a high-voltage power signal).

[0060] It should be noted that the transistor disclosed herein can be a thin film transistor or a field effect transistor or other devices with the same characteristics. Since the source and drain of the transistor used are symmetrical, there is no difference between the source and drain. In the embodiments of the present disclosure and the subsequent description, in order to distinguish the source and drain of the transistor, one of the electrodes is called the first electrode, the other electrode is called the second electrode, and the gate is called the control electrode. In addition, transistors can be divided into N-type and P-type according to the characteristics of the transistor. Among them, N-type thin film transistor refers to N-type ion doping in the active layer of the thin film transistor; P-type thin film transistor refers to P-type ion doping in the active layer of the thin film transistor. The working level signal of the N-type thin film transistor is a high level signal; the working level signal of the P-type thin film transistor is a low level signal. In the following embodiments, the first transistor M1 and the third transistor M3 are N-type thin film transistors as an example, and the second transistor M2 and the driving transistor M4 are P-type thin film transistors as an example for description, but the selection of the above transistor types does not constitute a limitation to the present disclosure.

[0061] The data line Data is electrically connected to the first electrode of the first transistor M1, and the gate line Gate is electrically connected to the control stage of the first transistor M1. The layer where the first electrode of the first transistor M1 is located is the source and drain electrode layer of the first transistor M1. This source and drain electrode layer is arranged on the side of the anode layer of the light-emitting device OLED that is close to the substrate 1. The gate drive signal provided by the gate line Gate is used to control the on and off of the first transistor M1. The data line Data provides the display data signal 10 and the touch drive signal to the pixel drive circuit 02 in different timing control phases, thereby performing image display and touch detection in stages. Specifically, in the touch phase t2, the first transistor M1 is turned off. At least some of the multiple data lines Data are multiplexed into the first touch electrode 31. In this case, the data line Data multiplexed into the first touch electrode 31 is loaded with the touch drive signal, while the second touch electrode 32 is grounded or loaded with a constant low voltage potential. The orthographic projections of the first touch electrodes 31 and the second touch electrodes 32 on the substrate 1 intersect with each other in their respective extension directions, forming a grid-like distribution, thereby identifying the touch location.

[0062] The disclosed embodiments implement a design that embeds touch functionality into OLED pixels. The data line "Data" is reused as the first touch electrode 31, and the second electrode 22 (cathode) of the light-emitting device "OLED" is reused as the second touch electrode 32. No additional touch electrode layer is added. Compared to related technologies, this reduces the wiring space occupied by the touch electrodes, lowers the display driver load, ensures a high PPI, and makes the touch display panel thinner and lighter. Furthermore, the process of preparing the data line "Data" is the same as the process of preparing the first touch electrode 31, and the process of preparing the second electrode 22 of the light-emitting device "OLED" is the same as the process of preparing the second touch electrode 32. This saves touch electrode preparation steps and materials, thereby saving costs and improving production efficiency. Furthermore, the design of embedding touch functionality into OLED pixels achieves high touch accuracy and sensitivity due to the large number of densely distributed data lines. The load (RC) of a single data line "Data" is much lower than that of a single traditional first touch electrode 31. Therefore, when transmitting a touch drive signal, the single data line "Data" is driven independently, enabling the touch drive signal to be coded at a higher drive frequency, thereby ensuring that the remote signal attenuation ratio is within an acceptable range.

[0063] Optionally, the width of the data line Data is between 6 μm and 10 μm.

[0064] In some embodiments, as Figures 1 to 3As shown, multiple sub-pixels 2 are divided into multiple groups of sub-pixel groups 20 arranged side by side along the second direction Y, and each group of sub-pixel groups 20 includes multiple sub-pixels 2 arranged side by side along the first direction X; the data lines Data are divided into multiple groups of data line groups 30 (for example, m groups, where m is a positive integer greater than or equal to 2) arranged side by side along the first direction X, and each group of data line groups 30 includes multiple data lines Data, and the multiple data lines Data in a group of data line groups 30 are multiplexed into a first touch electrode 31; the second electrodes 22 of each sub-pixel 2 in a group of sub-pixel groups 20 are connected into an electrode strip, or the second electrodes 22 in multiple groups of sub-pixel groups 20 continuously adjacent in the second direction Y are connected into an electrode strip; different electrode strips are arranged at intervals; and one electrode strip is multiplexed into a second touch electrode 32.

[0065] Multiple data lines Data in a data line group 30 are multiplexed into a first touch electrode 31. Optionally, each data line Data in a data line group 30 is multiplexed into a first touch electrode 31. Optionally, a portion of the data lines Data in a data line group 30 are multiplexed into a first touch electrode 31.

[0066] For the data lines Data of the same data line group 30 multiplexed as the first touch electrodes 31, the same touch driving signal is applied during the touch phase t2. The so-called "same touch driving signal" means that the timing and potential of the touch driving signal applied to each data line Data are the same.

[0067] Optionally, the orthographic projection of the second touch electrode 32 on the base substrate 1 has a rectangular outline. Optionally, the orthographic projection of the second touch electrode 32 on the base substrate 1 covers 30 to 40 rows of Real RGB pixels.

[0068] Optionally, a dimension of the second touch electrode 32 in the second direction Y (ie, a width of the second touch electrode 32 ) is between 3.5 mm and 4 mm.

[0069] Optionally, the distance between two adjacent second touch electrodes 32 is greater than 5 μm. Optionally, the distance between two adjacent second touch electrodes 32 is between 5 μm and 250 μm.

[0070] Optionally, a distance between two data lines Data that are farthest apart in a data line group 30 is between 3.5 mm and 4 mm.

[0071] Optionally, one data line group 30 includes 100 to 150 data lines Data. For example, one data line group 30 includes 120 data lines Data, passing through 40 columns of pixels.

[0072] In some embodiments, as Figure 1As shown, the display panel further includes a driving circuit 02 ; the driving circuit 02 is electrically connected to each data line Data.

[0073] Figure 5 The control circuit timing diagram of the display panel provided by the embodiment of the present disclosure is as follows: Figure 5 As shown, it includes a display phase t1 and a touch phase t2. The gate drive circuit 01 is configured to provide a gate drive signal to the gate line Gate to control the on and off of the first transistor M1. The drive circuit 02 is configured to provide a display data signal 10 to the data line Data for image display during the display phase t1; and to provide a touch drive signal to the data line Data for identifying the touch position during the touch phase t2. For a frame of signal output timing, the output timing of the display data signal 10 is before the output timing of the touch drive signal.

[0074] In the display phase t1, each data line Data is loaded with the display data signal 10, and each gate line Gate is scanned row by row. Figure 5 The first gate line Gate1, the second gate line Gate2, ..., and the nth gate line Gaten are also controlled to turn on the first transistor M1 row by row, driving the light emitting devices OLED in each row in sequence, thereby displaying a picture.

[0075] During touch phase t2, the gate drive signal provided by the gate line Gate turns off the first transistor M1. The data lines Data, multiplexed as the first touch electrodes 31 in a group of data line groups 30, provide the same touch drive signal. Each data line group 30 is scanned sequentially by column. The orthographic projections of the first touch electrodes 31 and the second touch electrodes 32 on the substrate 1 intersect in their respective extension directions, forming a grid-like distribution, thereby identifying the touch position.

[0076] Regarding the specific timing control method of the gate lines and data lines, reference may be made to the following display panel driving method, which will not be described in detail here.

[0077] Alternatively, as Figure 5 As shown, the touch phase t2 includes a mutual capacitance scanning phase t21, that is, each first touch electrode 31 is scanned in columns, a touch drive signal is provided to a column of first touch electrodes 31, the signals of all second touch electrodes 32 are read at once, and then the next column of first touch electrodes 31 is scanned, and so on. In this way, the position of each pair of horizontal and vertical coordinates can be accurately recorded, and then each touch point can be accurately detected, thereby ensuring the accuracy of touch detection.

[0078] Alternatively, as Figure 1 As shown, the driving circuit 02 includes a plurality of first signal terminals 021 , and one first signal terminal 021 is electrically connected to one data line Data, so that each data line Data is driven independently.

[0079] Optionally, the driving circuit 02 includes a plurality of second signal terminals, and one second signal terminal is electrically connected to one second touch electrode 32 , so that each second touch electrode 32 can be driven or read independently.

[0080] In some embodiments, Figure 6 A schematic diagram of a data line group 30 provided in an embodiment of the present disclosure is shown in FIG. Figure 6 As shown, for any group of data line groups 30, including the first data line 41 and the second data line 42; in the touch stage t2, the first data line 41 is multiplexed as the first touch electrode 31 and loaded with the touch drive signal; the second data line 42 is loaded with a constant voltage or floating; in the display stage t1, the first data line 41 and the second data line 42 are both loaded with the display data signal 10.

[0081] Here, the so-called “floating” refers to a specific electrode configuration or state. The present disclosure can float the second data line 42 , which means that no voltage is applied to the second data line 42 , the second data line 42 is not connected to any circuit, and the second data line 42 is in a suspended state.

[0082] The second data line 42 is loaded with a constant voltage or floats in the touch phase t2 and needs to be loaded with a display data signal 10 in the display phase t1. Therefore, a switch 5 can be added to control the second data line 42 to load different signals or float in different phases.

[0083] Optionally, a switch 5 is added at one end of the second data line 42 , which is disconnected in the touch phase t2 so that the second data line 42 is in a floating state, and closed in the display phase t1 for receiving the display data signal 10 .

[0084] Optionally, since each data line Data is driven independently, the driving circuit 02 can provide an independent constant voltage to the second data line 42 in the touch phase t2, and can also provide an independent display data signal 10 to the second data line 42 in the display phase t1.

[0085] Optionally, the constant voltage applied to the second data line 42 is lower than the turn-on voltage of the first transistor M1 , ensuring that the first transistor M1 is always in the off state during the touch phase t2 .

[0086] Optionally, the second data line 42 includes a plurality of lines, a portion of which is loaded with a constant voltage, and the remaining portions are floating.

[0087] In this embodiment, the number of first data lines 41 (or second data lines 42) can be flexibly increased or decreased. When the number of first data lines 41 is increased, the strength of the touch signal can be increased; when the number of first data lines 42 is decreased, the power consumption can be reduced.

[0088] In some embodiments, Figure 7aA schematic diagram of multiple data line groups provided in an embodiment of the present disclosure is provided. Figure 7b A schematic diagram of another plurality of data line groups provided in an embodiment of the present disclosure, such as Figure 7a and Figure 7b As shown, the multiple data line groups 30 include a first data line group 301 and a second data line group 302; in the touch stage t2, the multiple data lines Data in the first data line group 301 are multiplexed as the first touch electrode 31 and loaded with a touch driving signal, and the multiple data lines Data in the second data line group 302 are loaded with a constant voltage, or the multiple data lines Data in the second data line group 302 are floated; in the display stage t1, the data lines Data in the first data line group 301 and the second data line group 302 are both loaded with a display data signal 10.

[0089] The data lines Data in the second data line group 302 are loaded with a constant voltage or floated in the touch phase t2, and need to be loaded with a display data signal 10 in the display phase t1. Therefore, a multiplexer (Mux) 6 can be added to control the second data lines 42 to load different signals or float in different phases.

[0090] Optionally, the multiplexer (Mux) 6 includes multiple output terminals 61, one input terminal 62, and a control terminal 63. The multiple output terminals 61 correspond to each data line Data in the second data line group 302, one input terminal 62 is electrically connected to the driver circuit 02, and one control terminal 63 is electrically connected to the driver circuit 02. The driver circuit 02 is configured to send control signals to the control terminal 63 to control the on and off of the multiple switches. During the touch phase t2, each switch is off, and the data lines Data in the second data line group 302 are in a floating state. During the display phase t1, each switch is closed, and the driver circuit 02 provides a display data signal 10 to each data line Data in the second data line group 302 via the input terminals of the multiplexer (Mux).

[0091] Optionally, a portion of the data lines Data in the second data line group 302 is loaded with a constant voltage, and a portion thereof is floating.

[0092] Alternatively, as Figure 7a and Figure 7b As shown, each data line Data in the first data line group 301 is multiplexed into a first touch electrode 31 .

[0093] Alternatively, as Figure 7bAs shown, the second data line group 302 includes multiple first data lines 41 and at least one second data line 42. During the touch phase t2, the first data lines 41 are multiplexed as the first touch electrodes 31 and carry touch drive signals, while the second data lines 42 are loaded with a constant voltage or are floating. During the display phase t1, both the first data lines 41 and the second data lines 42 carry display data signals 10.

[0094] In this embodiment, the first data line group 301 (or the second data line group 302) can be flexibly increased or decreased. When the first data line group 301 is increased, the strength of the touch signal can be increased; when the first data line group 301 is decreased, the power consumption can be reduced.

[0095] In some embodiments, Figure 8 A schematic diagram of the electrical connection state of a multi-way selection sub-circuit 7 provided in an embodiment of the present disclosure is shown as follows: Figure 8 As shown, the display panel also includes a selection circuit; the selection circuit includes a plurality of multi-way selection sub-circuits 7; Figure 5 As shown, the touch phase t2 includes a mutual capacitance scanning phase t21. The number of data lines Data electrically connected to the multiplexer selection sub-circuit 7 can be set as needed. Optionally, the multiplexer selection sub-circuit 7 is provided corresponding to the first touch electrodes 31, i.e., one multiplexer selection sub-circuit 7 is electrically connected to one first touch electrode 31. Optionally, one first touch electrode 31 is electrically connected to multiple multiplexer selection sub-circuits 7.

[0096] In the mutual capacitance scanning phase t21, the first end 71 of the multiplexer selection sub-circuit 7 is electrically connected to the data line Data, the second end 72 is electrically connected to the first end of the first data lead 81, the third end 73 is floating, and the control end (not shown in the figure) is electrically connected to the drive circuit 02; the second end of the first data lead 81 is electrically connected to the drive circuit 02.

[0097] The first terminal 71 is an output terminal, and the second terminal 72 and the third terminal 73 are both input terminals. The multiplexer sub-circuit 7 also includes a control terminal. In response to a first control signal provided by the driver circuit 02 during the mutual capacitance scanning phase t21, the control terminal controls the second terminal 72 of the multiplexer sub-circuit 7 to connect to the first end of the first data lead 81, so that the driver circuit 02 provides a touch drive signal to the data line Data via the first data lead 81. During the display phase t1 and the mutual capacitance scanning phase t21, the connection relationship of the multiplexer sub-circuit 7 remains unchanged. That is, during the display phase t1, the first terminal 71 of the multiplexer sub-circuit 7 is electrically connected to the data line Data, the second terminal 72 is electrically connected to the first end of the first data lead 81, and the third terminal 73 is floating; the second end of the first data lead 81 is electrically connected to the driver circuit 02.

[0098] Alternatively, as Figure 5As shown, for any data line group 30, during the mutual capacitance scanning phase t21, the touch drive signals applied to the data lines Data are identical. Here, "identical touch drive signals" means that the timing and potential of the touch drive signals applied to each data line Data in the data line group 30 are identical.

[0099] Alternatively, as Figure 5 As shown, the first touch electrodes 31 include N; the 1st first touch electrode 31 to the Nth first touch electrode 31 are scanned in sequence. Specifically, in the mutual capacitance scanning stage t21, the moment when the touch drive signal (that is, the third sub-signal 13) loaded by the i-th first touch electrode 31 jumps from the first level to the second level is the first moment, and the moment when the touch drive signal (that is, the third sub-signal 13 at the next moment) loaded by the i+1-th first touch electrode 31 jumps from the second level to the first level is the second moment; the first moment and the second moment are the same, and i is an integer from 1 to (N-1). Exemplarily, the touch drive signal includes the third sub-signal 13 loaded in the mutual capacitance scanning stage t21, and the third sub-signal 13 is a pulse signal, whose waveform is discontinuous on the time axis, including a short first level and a second level of the remaining duration. The present disclosure is explained by taking the first level as a high level and the second level as a low level as an example. The voltage of the first level is less than the turn-on voltage of the first transistor M1 (that is, the voltage of the second sub-signal 12), which can ensure that the first transistor M1 is always in the off state during the touch stage t2.

[0100] Alternatively, as Figure 5 As shown, the gate drive signal includes a first sub-signal 11 and a second sub-signal 12. During the display phase, the first sub-signal 11 is provided to the gate line Gate row by row. The first sub-signal 11 comprises a high-level signal, which is used to control the first transistor M1 to turn on, thereby driving the light-emitting device OLED to emit light. During the mutual capacitance scanning phase t21, each gate line Gate is loaded with the second sub-signal 12. The second sub-signal 12 is a continuous low-level signal, which is used to control the first transistor M1 to remain in the off state throughout the mutual capacitance scanning phase t21, thereby ensuring that the first touch electrode 31 of the multiplexed data line Data can accurately identify the touch position.

[0101] Alternatively, as Figure 5 As shown, the display panel further includes a first power line ELVDD and a second power line ELVSS. The first power line ELVDD is electrically connected to the first electrode of the second transistor M2, and the second power line ELVSS is electrically connected to the second electrode 22 of the light-emitting device OLED. During the mutual capacitance scanning phase t21, the signals carried by the first power line ELVDD and the second power line ELVSS are low-level signals to avoid interference with the touch drive signal and the read signal.

[0102] In some embodiments, the touch phase t2 further includes a self-capacitance scanning phase t22 ; the output timing of the self-capacitance scanning phase t22 is after the output timing of the mutual-capacitance scanning phase t21 , and the self-capacitance scanning phase t22 includes continuous and alternating driving sub-phases t221 and reading sub-phases t222 .

[0103] This embodiment adds a self-capacitance scanning phase t22 after the mutual-capacitance scanning phase t21. The duration of the self-capacitance scanning phase t22 is less than or equal to the duration of the mutual-capacitance scanning phase t21. By adopting a mutual-capacitance followed by a self-capacitance scanning method, the water resistance and wet-finger tracking performance of the capacitive touch screen are improved.

[0104] like Figure 5 and Figure 8 As shown, in the driving sub-phase t221, the first terminal 71 of the multiplexer sub-circuit 7 is electrically connected to the data line Data, the second terminal 72 is electrically connected to the first terminal of the first data lead 81, and the third terminal 73 is floating; the second terminal of the first data lead 81 is electrically connected to the driving circuit 02.

[0105] Figure 9 This is a schematic diagram of another electrical connection state of the multi-way selection sub-circuit 7 provided in an embodiment of the present disclosure, as shown in FIG. Figure 5 and Figure 9 As shown, in the read sub-phase t222, the first terminal 71 of the multiplexer sub-circuit 7 is electrically connected to the data line Data, the second terminal 72 is floating, and the third terminal 73 is electrically connected to the first end of the second data lead 82; the second ends of the plurality of second data leads 82 are all electrically connected to the third data lead 83, and the third data lead 83 is electrically connected to the drive circuit 02. The first terminal 71 is an output terminal, and the second terminal 72 and the third terminal 73 are both input terminals.

[0106] like Figure 5 As shown, the touch drive signal also includes a fifth sub-signal 15 applied during the self-capacitive scanning phase t22. For example, the third sub-signal 13 is a pulse signal. The fifth sub-signal 15 is a square wave signal with a continuous waveform cycle, where half of the cycle is at the first level (e.g., a high level) and half is at the second level (e.g., a low level). During the driving sub-phase t221, the data line Data is applied with the first level of the fifth sub-signal 15; during the reading sub-phase t222, the data line Data is applied with the second level of the fifth sub-signal 15.

[0107] like Figure 8 As shown, the control terminal (not shown in the figure) of the multiplexer selection sub-circuit 7 controls the second terminal 72 of the multiplexer selection sub-circuit 7 to be connected to the first terminal of the first data lead 81 in response to the first control signal provided by the driving circuit 02 in the driving sub-phase t221, and the driving circuit 02 provides a first level to the data line Data through the first data lead 81; and Figure 9As shown, in response to the second control signal provided by the driver circuit 02 during the read sub-phase t222, the second terminal 72 of the multiplexer sub-circuit 7 is controlled to float, and the third terminal 73 is connected to the first terminal of the second data lead 82. At this time, the driver circuit 02 provides a second voltage level to the data line Data via the second data lead 82. The second voltage level is a low level or a ground signal, which can also be understood as the second data lead 82 being grounded. As a result, the first read signal fed back by the multiple data lines Data corresponding to the first touch electrodes 31 is aggregated to the third data line 83 via the second data lead 82 and transmitted to the driver circuit 02 to read the identified touch position from the first touch electrodes. At this time, the second touch electrodes 32 also send a second read signal back to the driver circuit 02, thereby achieving self-capacitive touch position detection.

[0108] Optionally, the multiplex selection sub-circuit 7 is a MUX circuit.

[0109] It should be noted that the data lines (Data) of the present disclosure are multiplexed into the first touch electrodes 31. Because the width of individual data lines (Data) is small, the signal on each data line (Data) is very small. Therefore, during the read sub-phase t222 of the self-capacitive scanning phase t22, it is difficult for the driver circuit 02 to detect the signal on a single data line (Data). Furthermore, the large number of data lines (Data) requires the driver circuit 02 to integrate multiple touch receiving sub-circuits. To receive the signal on each data line (Data), subsequent circuits (such as the analog front-end and filtering circuit ADC) must switch at high speed to receive the signal. The time allocated to each data line (Data) is very short, leaving insufficient time for integration or digital filtering to improve signal quality. Given the weak signal and short timeframe, increasing the number of analog front-end circuits would rapidly increase the cost of the driver circuit 02. In this regard, in the reading sub-stage t222, this embodiment uses a multi-way selection sub-circuit 7 to connect the data lines Data in the same data line group 30 (a first touch electrode 31) to a second data lead 82 for output, thereby greatly enhancing the second reading signal aggregated into the driving circuit 02, making it easier for the driving circuit 02 to read and detect.

[0110] Alternatively, as Figure 5As shown, the gate drive signal also includes the fourth sub-signal 14 loaded in the self-capacitance scanning stage t22. In the self-capacitance scanning stage t22, the waveform of the signal loaded by each data line Data and each gate line Gate is identical. That is, the waveform of the fourth sub-signal 14 is identical to that of the fifth sub-signal 15. The fourth sub-signal 14 and the fifth sub-signal 15 are both square wave signals. Here, "same waveform" refers to that the timing and potential are all the same. It should be noted that when the same waveform signal is applied between different electrodes (here referring to between the data line Data, between the gate line Gate, or between the data line Data and the gate line Gate), the two plate potentials of the capacitor formed between the different electrodes are the same, and there is no potential difference. Although the capacitor exists and stores and consumes charge, these capacitors do not play the role of load. Compared with the non-fully driven method, this makes the data line Data and gate line Gate of the fully driven method have a higher charging saturation rate at the far end under the same driving voltage, less signal loss, a larger far-end signal, and a smaller difference in the near- and far-end signals, thereby improving the driving signal strength. Optionally, the waveform of the signal carried by the data line Data and the gate line Gate may be a square wave with continuous periods.

[0111] It should be noted that in the self-capacitance scanning mode, the effective level of the fourth sub-signal 14 loaded by the gate line Gate is less than the turn-on voltage of the first transistor M1 (the effective level of the first sub-signal 11), ensuring that the first transistor M1 is always in the off state in the self-capacitance scanning stage t22.

[0112] Alternatively, as Figure 4 As shown, the display panel further includes a first power line ELVDD and a second power line ELVSS, wherein the first power line ELVDD is electrically connected to the first electrode of the second transistor M2, and the second power line ELVSS is electrically connected to the second electrode 22 of the light emitting device OLED. Figure 5 As shown, in the self-capacitive scanning stage t22, the waveforms of the signals loaded by the first power line ELVDD and the second power line ELVSS are the same as the waveform of the fifth sub-signal 15 loaded by the data line Data, avoiding interference with loading the fifth sub-signal 15 and reading the first read signal.

[0113] In some embodiments, as Figure 5 and Figure 9 As shown, the touch phase t2 also includes the active pen touch phase t3; the output timing of the active pen scanning phase t3 is after the output timing of the mutual capacitance scanning phase t21. The so-called "active pen scanning phase t3" refers to the signal receiving phase of the active capacitive stylus.

[0114] In the active pen scanning phase t3, the first end 71 of the multi-way selection sub-circuit 7 is electrically connected to the data line Data, the second end 72 is floating, and the third end 73 is electrically connected to the first end of the second data lead 82; the second ends of the multiple second data leads 82 are all electrically connected to the third data lead 83, and the third data lead 83 is electrically connected to the driving circuit 02.

[0115] The multiplexer sub-circuit 7 also includes a control terminal. In response to a second control signal provided by the driver circuit 02 during the active pen scanning phase t3, the control terminal controls the floating state of the second terminal 72 of the multiplexer sub-circuit 7. The third terminal 73 is connected to the first end of the second data lead 82. The first read signals fed back by the multiple data lines Data corresponding to the first touch electrodes 31 are aggregated via the second data lead 82 to the third data line 83 and transmitted to the driver circuit 02. At this time, the second touch electrodes 32 also feed back the second read signals to the driver circuit 02, thereby enabling active pen touch position detection.

[0116] Alternatively, as Figure 5 As shown, during the active pen scanning phase t3, the signal loaded on each gate line Gate is the same, all low-level signals (i.e., inactive level), ensuring that the first transistor M1 remains in the off state during the active pen scanning phase t3. The signal loaded on each data line Data is the same, all low-level signals (i.e., second level), to continuously read and obtain the second read signal.

[0117] Alternatively, as Figure 5 As shown, the display panel further includes a first power line ELVDD and a second power line ELVSS. The first power line ELVDD is electrically connected to the first electrode of the second transistor M2, and the second power line ELVSS is electrically connected to the second electrode 22 of the light-emitting device OLED. During the active pen scanning phase t3, the signals carried by the first power line ELVDD and the second power line ELVSS are low-level signals to avoid interference with the second read signal.

[0118] In some embodiments, Figure 10 This is a schematic diagram of the second touch electrode 32 provided in an embodiment of the present disclosure, as shown in FIG. Figure 10 As shown, the display panel further includes a redundant electrode 33 disposed on the same layer as the second touch electrode 32 ; the redundant electrode 33 is spaced apart from the second touch electrode 32 .

[0119] Alternatively, as Figure 10 As shown, the second touch electrode 32 has an opening 321 , and the redundant electrode 33 is located in the opening.

[0120] In this embodiment, by disposing the redundant electrode 33 in the second touch electrode 32 , the load of the second touch electrode 32 can be reduced, thereby enhancing the touch signal.

[0121] In some embodiments, as Figure 2 As shown, the display panel includes a first conductive layer 101, a first insulating layer 102, a second conductive layer 103, a second insulating layer 104, a third conductive layer 105, a pixel defining layer 106, and a second electrode layer 107, which are arranged in sequence away from the base substrate 1. The pixel defining layer 106 has a pixel opening for defining the light-emitting layer 23. The data line Data is located in the first conductive layer 101, the first electrode 21 is located in the third conductive layer 105, and the second electrode 22 is located in the second electrode layer 107. The second conductive layer 103 includes a transfer electrode 32a; the orthographic projection of the second touch electrode 32 on the base substrate 1 overlaps with the orthographic projection of the transfer electrode 32a on the base substrate 1; the second touch electrode 32 is electrically connected to the transfer electrode 32a through a first connection via V1 that sequentially penetrates the pixel defining layer 106 and the second insulating layer 104; the orthographic projection of the first connection via V1 on the base substrate 1 is located between the orthographic projections of two adjacent sub-pixels 2 on the base substrate 1; the transfer electrode 32a is electrically connected to the drive circuit 02, and is used to feed back the touch signal read by the second touch electrode 32 to the drive circuit 02 in the mutual capacitance scanning stage t21, and in the self-capacitance scanning stage t22, is used to receive the drive signal provided by the drive circuit 02 and feed back the second read signal to the drive circuit 02.

[0122] In this embodiment, a transfer electrode 32a is added to the second conductive layer 103 between the layer where the second touch electrode 32 is located (the second electrode layer 107) and the layer where the first touch electrode 31 is located (the first conductive layer 101). The transfer electrode 32a is used to transfer the second touch electrode 32, thereby reducing the cathode resistance of the light-emitting device OLED and reducing the reverse current drop (IR Drop), which is beneficial to improving the afterimage.

[0123] In some embodiments, as Figure 2 As shown, a partition structure 9 is further provided on the side of the pixel defining layer 106 facing away from the third conductive layer 105 . The partition structure 9 is used to partition the second electrode layer 107 to form the second touch electrode 32 .

[0124] Alternatively, as Figure 2 As shown, the partition structure 9 is an isolation column. The isolation column includes a first isolation layer 91, a second isolation layer 92, and a third isolation layer 93, which are arranged in sequence away from the base substrate 1. The third isolation layer 93 and the fourth isolation layer both protrude from the second isolation layer 92, forming an undercut structure between the third isolation layer 93 and the second isolation layer 92 to isolate the second electrode layer 107. The orthographic projection of the isolation column on the base substrate 1 is located between the orthographic projections of two adjacent second touch electrodes 32 on the base substrate 1.

[0125] In some embodiments, as Figure 2As shown, the display panel further includes an encapsulation layer 108 disposed on the side of the second electrode layer 107 facing away from the base substrate 1. The encapsulation layer 108 can have a single-layer structure or a multi-layer structure. When the encapsulation layer 108 has a multi-layer structure, the encapsulation layer 108 can include a first inorganic encapsulation layer 1081, an organic encapsulation layer 1082, and a second inorganic encapsulation layer 1083, such as silicon nitride SiN + ink + silicon nitride SiN, arranged in sequence along a direction away from the base substrate 1.

[0126] In addition, the embodiment of the present disclosure also provides a method for driving a display panel, which is used to drive the above-mentioned display panel. Figure 5 As shown, a frame of signal output timing includes a display phase t1 and a touch phase t2. In the display phase t1, a display data signal 10 is provided to the data line Data for image display; in the touch phase t2, a touch drive signal is provided to the data line Data for identifying a touch position. For a frame of signal output timing, the output timing of the display data signal 10 precedes the output timing of the touch drive signal.

[0127] In some embodiments, the display panel includes a gate line Gate, a data line Data, and a pixel driving circuit electrically connected to the gate line Gate and the data line Data. Figure 5 As shown, the gate line Gate is used to transmit a gate drive signal, which includes a continuous first sub-signal 11 and a second sub-signal 12. The first sub-signal 11 is used to control the on-state of the first transistor M1 in the pixel drive circuit. For example, the first sub-signal 11 is a high-level signal. The second sub-signal 12 is used to control the off-state of the first transistor M1. For example, the second sub-signal 12 is a low-level signal. The touch phase t2 includes at least a mutual capacitance scanning phase t21. The touch drive signal includes at least a third sub-signal 13.

[0128] like Figure 2 As shown, the display panel further includes a gate drive circuit 01 and a drive circuit 02. Specifically, as Figure 5 As shown, in the display phase t1, the gate drive circuit 01 provides a first sub-signal 11 to the gate line Gate row by row, and uses the effective level of the first sub-signal 11 to control the first transistor M1 to turn on; the drive circuit 02 provides a display data signal 10 to each data line Data to drive the pixel drive circuit to display the picture. In the mutual capacitance scanning phase t21, the gate drive circuit 01 provides a second sub-signal 12 to each row of gate lines Gate. The second sub-signal 12 is a continuous low-level signal to control the first transistor M1 to be continuously turned off throughout the mutual capacitance scanning phase t21; the drive circuit 02 sequentially provides a third sub-signal 13 to the data line Data multiplexed by each column of first touch electrodes 31. The third sub-signal 13 is a pulse signal to identify the touch position.

[0129] In some embodiments, as Figure 5 As shown, the touch stage t2 also includes a self-capacitance scanning stage t22; the output timing of the self-capacitance scanning stage t22 is after the output timing of the mutual-capacitance scanning stage t21, and the self-capacitance scanning stage t22 includes continuous and alternating driving sub-stages t221 and reading sub-stages t222; the gate drive signal also includes a fourth sub-signal 14; the fourth sub-signal 14 is a square wave signal, including a valid level (such as a high level) and an invalid level (such as a low level); the touch drive signal also includes a fifth sub-signal 15; the fifth sub-signal 15 is a square wave signal, including a first level (such as a high level) and a second level (such as a low level).

[0130] Specifically, in the driving sub-stage t221, a valid level is provided to each gate line Gate, and a first level is provided to each data line Data, so as to drive each first touch electrode 31 to identify the touch position; in the reading sub-stage t222, an invalid level is provided to each gate line Gate, and a second level is provided to each data line Data, so as to read the identified touch position from the first touch electrode 31.

[0131] Among them, the effective level of the fourth sub-signal 14 is lower than the effective level of the first sub-signal 11, that is, the effective level of the fourth sub-signal 14 loaded by the gate line Gate is lower than the turn-on voltage of the first transistor M1, thereby ensuring that the first transistor M1 is always in the off state during the self-capacitance scanning stage t22.

[0132] During the driving sub-phase t221, the driving circuit 02 provides a first high level to each data line Data, driving each first touch electrode 31 to identify the touch position. During the reading sub-phase t222, the driving circuit 02 provides a second low level or ground to each data line Data, causing the first touch electrode 31 to feed back the identified touch position to the driving circuit 02 in the form of a first read signal. At this time, the second touch electrodes 32 also feed back a second read signal to the driving circuit 02, thereby implementing self-capacitive touch position detection.

[0133] In some embodiments, as Figure 5 As shown, the touch phase t2 also includes an active pen touch phase t3; the output timing of the active pen scanning phase t3 is after the output timing of the mutual capacitance scanning phase t21.

[0134] During the active pen touch phase t3, the gate drive circuit 01 provides an invalid level to each gate line Gate, ensuring that the first transistor M1 remains in the off state during the active pen scanning phase t3. The drive circuit 02 provides a second level, a low-level signal, to each data line Data to continuously read and obtain a first read signal fed back by the first touch electrode 31. At this time, the second touch electrode 32 also feeds back a second read signal to the drive circuit 02, thereby realizing active pen touch position detection.

[0135] In addition, embodiments of the present disclosure further provide a display device comprising the display panel described in any of the above embodiments. The display device may be, for example, a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, vehicle-mounted device, or any other product with a display function. Other essential components of the display device are readily understood by those skilled in the art and are not detailed here, nor should they be construed as limitations of the present disclosure.

[0136] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display panel, characterized in that: The invention comprises a base substrate, a plurality of sub-pixels, a plurality of gate lines and a plurality of data lines arranged on the base substrate; the gate lines and the data lines are arranged to intersect, and the sub-pixels are electrically connected to one of the gate lines and one of the data lines; The sub-pixel includes a first electrode, a light-emitting layer, and a second electrode arranged in sequence along a direction away from the base substrate; the data line is arranged on a side of the first electrode close to the base substrate; at least some of the multiple data lines are reused as first touch electrodes; the second electrodes in at least some of the sub-pixels are arranged at intervals, and the second electrodes are reused as second touch electrodes; the orthographic projections of the first touch electrode and the second touch electrode on the base substrate intersect with each other in their respective extension directions.

2. The display panel according to claim 1, wherein: The gate lines extend along a first direction, and the data lines extend along a second direction; The plurality of sub-pixels are divided into a plurality of sub-pixel groups arranged side by side along the second direction, each of the sub-pixel groups including a plurality of sub-pixels arranged side by side along the first direction; The data lines are divided into a plurality of data line groups arranged side by side along the first direction, each data line group includes a plurality of data lines, and the plurality of data lines in a data line group are multiplexed into a first touch electrode; The second electrodes of each of the sub-pixels in a group of the sub-pixel groups are connected into an electrode strip, or the second electrodes of multiple groups of the sub-pixel groups continuously adjacent in the second direction are connected into an electrode strip; different electrode strips are arranged at intervals; and one electrode strip is reused as one of the second touch electrodes.

3. The display panel according to claim 2, wherein: For any group of the data lines, including a first data line and a second data line; in the touch stage, the first data line is multiplexed as the first touch electrode; the second data line is loaded with a constant voltage or is floating; In the display phase, both the first data line and the second data line are loaded with display data signals.

4. The display panel according to claim 2, wherein: The plurality of data line groups include a first data line group and a second data line group; In the touch control stage, the plurality of data lines in the first data line group are multiplexed as the first touch control electrodes, and the plurality of data lines in the second data line group are loaded with a constant voltage, or the plurality of data lines in the second data line group are floated; In the display phase, the data lines in the first data line group and the second data line group are all loaded with display data signals.

5. The display panel according to claim 1, wherein: The display panel further includes a redundant electrode provided in the same layer as the second touch electrode; the redundant electrode is spaced apart from the second touch electrode.

6. The display panel according to claim 1, wherein: The display panel further includes a driving circuit; the driving circuit is electrically connected to each of the data lines; The driving circuit is configured to provide a display data signal to the data line in a display phase to display an image; and to provide a touch driving signal to the data line in a touch phase to identify a touch position; For a frame signal output timing, the output timing of the display data signal is before the output timing of the touch driving signal.

7. The display panel according to claim 6, wherein: The display panel further includes a selection circuit; the selection circuit includes a plurality of multi-way selection sub-circuits; the touch control stage includes a mutual capacitance scanning stage; In the mutual capacitance scanning stage, the first end of the multi-way selection sub-circuit is electrically connected to the data line, the second end is electrically connected to the first end of the first data lead, the third end is floating, and the control end is electrically connected to the drive circuit; the second end of the first data lead is electrically connected to the drive circuit.

8. The display panel according to claim 7, wherein: For any group of the data lines, in the mutual capacitance scanning phase, the touch driving signals loaded on the data lines are the same; The first touch electrodes include N; in the mutual capacitance scanning stage, the moment when the touch drive signal loaded by the i-th first touch electrode jumps from the first level to the second level is the first moment, and the moment when the touch drive signal loaded by the i+1-th first touch electrode jumps from the second level to the first level is the second moment; the first moment and the second moment are the same; i is an integer between 1 and (N-1).

9. The display panel according to claim 7, wherein: The touch control stage also includes a self-capacitance scanning stage; the output timing of the self-capacitance scanning stage is after the output timing of the mutual-capacitance scanning stage, and the self-capacitance scanning stage includes continuous and alternating driving sub-stages and reading sub-stages; In the driving sub-phase, the first end of the multiplexer sub-circuit is electrically connected to the data line, the second end is electrically connected to the first end of the first data lead, and the third end is floating; the second end of the first data lead is electrically connected to the driving circuit; In the reading sub-phase, the first end of the multi-way selection sub-circuit is electrically connected to the data line, the second end is floating, and the third end is electrically connected to the first end of the second data lead; the second ends of multiple second data leads are all electrically connected to the third data lead, and the third data lead is electrically connected to the driving circuit.

10. The display panel according to claim 9, wherein: In the self-capacitive scanning stage, the waveforms of the signals loaded on each of the data lines and each of the gate lines are the same.

11. The display panel according to claim 7 or 9, characterized in that: The touch control stage also includes an active pen touch stage; the output timing of the active pen scanning stage is after the output timing of the mutual capacitance scanning stage; In the active pen touch stage, the first end of the multi-way selection sub-circuit is electrically connected to the data line, the second end is floating, and the third end is electrically connected to the first end of the second data lead; the second ends of multiple second data leads are all electrically connected to the third data lead, and the third data lead is electrically connected to the driving circuit.

12. The display panel according to claim 1, wherein The sub-pixel includes a light-emitting device and a pixel driving circuit for driving the light-emitting device; the pixel driving circuit includes at least a first transistor for writing data; one of the data lines is electrically connected to the first stage of the first transistor, and one of the gate lines is electrically connected to the control electrode of the first transistor; the first transistor is turned off during the touch phase.

13. The display panel according to claim 1, wherein The display panel includes a first conductive layer, a first insulating layer, a second conductive layer, a second insulating layer, a third conductive layer, a pixel defining layer, and a second electrode layer, which are sequentially arranged in a direction away from the base substrate; the pixel defining layer has a pixel opening for defining the light-emitting layer; The data line is located in the first conductive layer, the first electrode is located in the third conductive layer, and the second electrode is located in the second electrode layer; The second conductive layer includes a switching electrode; The orthographic projection of the second touch electrode on the base substrate overlaps with the orthographic projection of the transfer electrode on the base substrate; The second touch electrode is electrically connected to the transfer electrode through a first connecting via hole that sequentially penetrates the pixel defining layer and the second insulating layer; the orthographic projection of the first connecting via hole on the base substrate is located between the orthographic projections of two adjacent sub-pixels on the base substrate; The switching electrode is electrically connected to the driving circuit.

14. The display panel according to claim 13, wherein: A partition structure is further provided on a side of the pixel defining layer away from the third conductive layer, and the partition structure is used to partition the second electrode layer to form the second touch electrode.

15. A display device comprising the display panel according to any one of claims 1 to 14.

Images