Display device, display panel and control method thereof

Abstract

The application relates to a display device, a display panel and a control method thereof. The display panel comprises an array substrate and an opposite substrate arranged oppositely. A driving array layer of the array substrate is formed with a plurality of thin film transistors and a plurality of signal lines. A light-transmitting conductive layer comprises a plurality of shielding common electrode wires. A normal projection of the shielding common electrode wires on a first substrate covers a normal projection of at least part of the signal lines on the first substrate. The array substrate further comprises a frame glue formed in a frame area. At least part of the frame glue is provided with conductive particles. A common electrode layer comprises a plurality of touch electrodes arranged in an array. The touch electrodes are electrically connected to the conductive particles through touch wires. One end of the shielding common electrode wires is electrically connected to the conductive particles, and the other end is electrically connected to a touch chip. The display panel can realize embedded touch display integration without increasing process and masks.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display device, display panel and control method thereof. Background Technology

[0002] Touchscreens, as human-computer interaction devices, are widely used in daily life. Touchscreens can be classified according to their working principle into capacitive, resistive, and surface-mount touchscreens. Capacitive touchscreens work by sensing the electrical current emitted by the human body.

[0003] In capacitive touchscreen design, one or more additional photomasks are typically added to form the sensing electrodes of the capacitor. DBS (Dataline BM Less) pixel design primarily replaces the black matrix (BM) with a shielded common electrode (Com ITO) above the data lines to overcome light leakage issues caused by misalignment between the BM on the opposing substrate (CF) and the data lines on the array substrate. This technology is widely used in flat-curved shared product designs, where the common electrode is arranged in a mesh pattern within the array substrate. However, existing DBS-based touch panels have a problem: they require one or more additional photomasks to form multiple sensing electrodes for the capacitor, each corresponding to a touch point. This increases the number of manufacturing steps and consumes more materials. Summary of the Invention

[0004] This application aims to provide a display device, display panel and control method thereof, which can realize embedded touch display integration without increasing the process and photomask.

[0005] In a first aspect, embodiments of this application propose a display panel, including a display area and a border area located around the display area. The display panel includes an array substrate, a counter substrate, and a liquid crystal layer disposed between the array substrate and the counter substrate, which are disposed opposite each other. The array substrate includes a driving array layer and a light-transmitting conductive layer sequentially formed on a first substrate. The driving array layer includes a plurality of thin-film transistors and a plurality of signal lines electrically connected to the plurality of thin-film transistors. The light-transmitting conductive layer includes a plurality of shielded common electrode traces, the orthographic projection of which on the first substrate covers at least a portion of the orthographic projection of the signal lines on the first substrate. The array substrate also includes a frame adhesive formed in the border area, and conductive particles are disposed within at least a portion of the frame adhesive. The counter substrate includes a common electrode layer formed on a second substrate, wherein the common electrode layer includes a plurality of touch electrodes distributed in an array. The touch electrodes are electrically connected to the conductive particles through touch traces. One end of the shielded common electrode trace is electrically connected to the conductive particles, and the other end is electrically connected to a touch chip. When the thin-film transistors are off, the shielded common electrode traces output touch signals, and when the thin-film transistors are on, the shielded common electrode traces output common electrode signals.

[0006] In one possible implementation, the array substrate further includes a bonding area located on one side of the display area, the bonding area being provided with touch pins configured to be bonded to a circuit board, and a touch chip being disposed on the circuit board; or, the touch pins being configured to be bonded to a touch chip.

[0007] In one possible implementation, the signal line includes a data line extending along the column direction, a shielded common electrode trace extending along the column direction from the display area to the bonding area, and a frame adhesive with conductive particles located at the end of the shielded common electrode trace away from the bonding area.

[0008] In one possible implementation, each touch electrode is electrically connected to at least one touch trace, and the length of the touch traces corresponding to the multiple touch electrodes gradually shortens along the column direction away from the bonding area.

[0009] In one possible implementation, the light-transmitting conductive layer further includes a first pixel electrode and a second pixel electrode arranged alternately along the row and column directions and having opposite polarities, with the shielded common electrode trace located between the first pixel electrode and the second pixel electrode.

[0010] In one possible implementation, the signal line includes a scan line extending in the row direction, a shielded common electrode trace extending in the row direction from the display area to the bonding area, and a frame adhesive with conductive particles located at the end of the shielded common electrode trace away from the bonding area.

[0011] In one possible implementation, each touch electrode is electrically connected to at least one touch trace, and the length of the touch traces corresponding to the multiple touch electrodes gradually shortens along the row direction away from the bonding area.

[0012] In one possible implementation, the light-transmitting conductive layer also includes pixel electrode pairs connected to the same data line and having the same polarity, while two adjacent sets of pixel electrode pairs in the same column are respectively connected to different data lines, and multiple sets of pixel electrode pairs are arranged alternately in the row and column directions, with the shielded common electrode trace located between two adjacent rows of pixel electrode pairs.

[0013] Secondly, this application also proposes a control method for a display panel, comprising: during the touch phase, the thin-film transistors on one side of the array substrate are turned off, the shielded common electrode traces of the array substrate output touch signals, and the touch signals are transmitted to the touch traces and corresponding touch electrodes on the opposite side of the substrate via the conductive particles of the frame adhesive; during the display phase, the thin-film transistors on one side of the array substrate are turned on, the shielded common electrode traces of the array substrate output common electrode signals, and the common electrode signals are transmitted to the touch traces and corresponding touch electrodes on the opposite side of the substrate via the conductive particles of the frame adhesive.

[0014] Thirdly, embodiments of this application also provide a display device, including: a display panel as described above; and a touch chip configured to output touch signals or common electrode signals to the shielded common electrode traces of the array substrate of the display panel.

[0015] According to the display device, display panel, and control method provided in the embodiments of this application, by multiplexing the shielded common electrode traces used to block signal lines on one side of the array substrate into traces for transmitting touch signals, and electrically connecting the shielded common electrode traces to the touch traces and corresponding touch electrodes on the opposite side of the substrate through conductive particles in the frame adhesive, embedded touch display integration can be achieved without increasing the process and photomask. Furthermore, since no new metal layer is added to arrange the touch traces, the aperture ratio of the display panel is not affected, which is beneficial for improving the light transmittance of the display panel. Attached Figure Description

[0016] The features, advantages, and technical effects of exemplary embodiments of the present application will now be described with reference to the accompanying drawings. In the drawings, the same components are referred to by the same reference numerals. The drawings are not drawn to scale and are only used to illustrate relative positions. The layer thicknesses in some areas are exaggerated for ease of understanding; the layer thicknesses in the drawings do not represent actual layer thickness proportions.

[0017] Figure 1 This diagram shows a cross-sectional view of the display panel provided in the first embodiment of this application.

[0018] Figure 2 Show Figure 1 The diagram shows a top view of the display panel structure.

[0019] Figure 3 Show Figure 2 A schematic diagram of the longitudinal cross-sectional structure at the conductive particles;

[0020] Figure 4 Show Figure 1 A schematic diagram of the pixel architecture of the array substrate;

[0021] Figure 5 A cross-sectional structural schematic diagram of the display panel provided in the second embodiment of this application is shown;

[0022] Figure 6 Show Figure 5 The diagram shows a top view of the display panel structure.

[0023] Figure 7 Show Figure 6 A schematic diagram of the longitudinal cross-sectional structure at the conductive particles;

[0024] Figure 8 Show Figure 5 A schematic diagram of the pixel architecture of the array substrate.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Array substrate; AA, display area; BA, bonding area; D, data line; S, scan line;

[0027] 11. First substrate; 12. Driving array layer; 13. Transparent conductive layer; 130. Shielded common electrode trace; 131. First pixel electrode; 132. Second pixel electrode; 14. Frame adhesive; 141. Conductive particles; 133. Pixel electrode pair;

[0028] 2. Opposing substrate; 21. Second substrate; 22. Common electrode layer; 221. Touch electrode; 222. Touch trace;

[0029] 3. Liquid crystal layer; 4. Touch chip. Detailed Implementation

[0030] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of the regional structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0031] First Embodiment

[0032] Figure 1 This diagram shows a cross-sectional view of the display panel provided in the first embodiment of this application. Figure 2 Show Figure 1 The diagram shows a top view of the display panel structure. Figure 3 Show Figure 2 A schematic diagram of the longitudinal cross-sectional structure at the conductive particles.

[0033] like Figures 1 to 3 As shown, the display panel provided in the first embodiment of this application includes a display area AA and a border area NA located around the display area AA. The display panel includes an array substrate 1, a counter substrate 2, and a liquid crystal layer 3 disposed between the array substrate 1 and the counter substrate 2, which are disposed opposite to each other. The liquid crystal layer 3 includes a plurality of liquid crystal molecules, which are usually rod-shaped and can flow like a liquid while also having certain crystal characteristics. When the liquid crystal molecules are in an electric field, their alignment direction changes according to the change of the electric field.

[0034] The array substrate 1 includes a driving array layer 12 and a light-transmitting conductive layer 13 sequentially formed on a first substrate 11. The driving array layer 12 includes a plurality of thin-film transistors and a plurality of signal lines electrically connected to the plurality of thin-film transistors. The light-transmitting conductive layer 13 includes a plurality of shielded common electrode traces 130. The orthogonal projection of the shielded common electrode traces 130 on the first substrate 11 covers at least a portion of the orthogonal projection of the signal lines on the first substrate 11.

[0035] The array substrate 1 also includes a frame adhesive 14 formed in the border area NA, with conductive particles 141 disposed within at least a portion of the frame adhesive 14. The opposing substrate 2 includes a common electrode layer 22 formed on the second substrate 21. The common electrode layer 22 includes a plurality of touch electrodes 221 arranged in an array. The touch electrodes 221 are electrically connected to the conductive particles 141 through touch traces 222. One end of the shielded common electrode trace 130 is electrically connected to the conductive particles 141, and the other end is electrically connected to the touch chip 4. The thin-film transistor is electrically connected to the signal line. When the thin-film transistor is off, the shielded common electrode trace 130 outputs a touch signal; when the thin-film transistor is on, the shielded common electrode trace 130 outputs a common electrode signal.

[0036] In this embodiment, the thin-film transistor on one side of the array substrate 1 is a switching element. The thin-film transistor can separate the display function and touch function of the display panel in timing.

[0037] Specifically, when the thin-film transistor is turned on, the display panel is in the display stage. The thin-film transistor is turned on by a signal applied to the gate, and the signal applied to the data line D is applied to the pixel electrode. As a result, an electric field of predetermined strength is generated between the pixel electrode and the common electrode layer 22. Applying different voltages can change the orientation of the liquid crystal molecules, thereby adjusting the light transmittance and displaying an image. At this time, the touch chip 4 outputs a common electrode signal through the shielded common electrode trace 130, which is transmitted to the touch trace 222 and the corresponding touch electrode 221 on the side of the opposing substrate 2 via the conductive particles 141 in the sealant 14. This makes the potential of the shielded common electrode trace 130 and each touch electrode 221 of the common electrode layer 22 on the side of the opposing substrate 2 the same, so that the liquid crystal molecules above the signal line always remain in an undeflected state, thereby achieving a light-shielding effect.

[0038] When the thin-film transistor is turned off, the display panel is in the touch stage. The touch chip 4 outputs touch signals through the shielded common electrode trace 130, which are transmitted to the touch trace 222 and the corresponding touch electrode 221 on the side of the opposing substrate 2 via the conductive particles 141 in the frame adhesive 14, thereby realizing the touch function.

[0039] Since the shielded common electrode trace 130 and the pixel electrode are arranged in the same layer on the light-transmitting conductive layer 13, and the material can be indium tin oxide (ITO), compared with the in-cell touch display panel in related technologies, it is not necessary to set an additional metal layer on one side of the array substrate 1 to arrange the metal traces for transmitting touch signals. Therefore, it is not necessary to set an additional photomask process to prepare the metal traces, which will not increase the difficulty of the process and will not affect the pixel aperture ratio, which is beneficial to improving the light transmittance of the display panel.

[0040] According to the display panel provided in this application embodiment, by reusing the shielded common electrode trace 130 used to block signal lines on one side of the array substrate 1 as a trace for transmitting touch signals, and electrically connecting the shielded common electrode trace 130 to the touch trace 222 and corresponding touch electrode 221 on the opposite side of the substrate 2 through the conductive particles 141 in the frame adhesive 14, embedded touch display integration can be achieved without increasing the process and photomask. In addition, since no new metal layer is added to arrange the touch traces, the aperture ratio of the display panel is not affected, which is beneficial to improving the light transmittance of the display panel.

[0041] In some embodiments, the array substrate 1 further includes a bonding area BA located on one side of the display area AA. The bonding area BA is provided with touch pins, which are configured to be bonded to the circuit board. The touch chip 4 is disposed on the circuit board. Optionally, the circuit board is a flexible printed circuit board (FPC) or a flip-chip film, and the touch chip 4 is disposed on the circuit board.

[0042] In some embodiments, the array substrate 1 further includes a bonding area BA located on one side of the display area AA, the bonding area BA being provided with touch pins, and the touch pins being configured to be bonded and connected to the touch chip 4.

[0043] In some embodiments, the signal line includes a data line D extending along the column direction, a shielded common electrode trace 130 extending along the column direction from the display area AA to the bonding area BA, and a frame adhesive 14 having conductive particles 141 located at the end of the shielded common electrode trace 130 away from the bonding area BA.

[0044] Optionally, the display panel is rectangular in shape, and the array substrate 1 and the opposing substrate 2 are also rectangular. A frame adhesive 14 surrounds three sides of the display area AA, and conductive particles 141 are formed within one side of the frame adhesive 14. The bonding area BA is located on one side of the display area AA and is positioned opposite to the frame adhesive 14 with the conductive particles 141. A shielded common electrode trace 130 extends along the column direction from the display area AA to the bonding area BA, and the orthographic projection of the shielded common electrode trace 130 on the first substrate 11 covers the orthographic projection of the data line D on the first substrate 11.

[0045] Furthermore, each touch electrode 221 is electrically connected to at least one touch trace 222, and the length of the touch trace 222 corresponding to the plurality of touch electrodes 221 gradually shortens along the column direction away from the bonding area BA.

[0046] Optionally, the touch electrode 221 is rectangular or rhomboid in shape. Each touch electrode 221 is electrically connected to at least one touch trace 222. Multiple touch electrodes 221 are arranged in an array. The touch trace 222 is connected between the touch electrode 221 and the conductive particles 141 of the frame adhesive 14. The length of the touch trace 222 corresponding to the multiple touch electrodes 221 gradually shortens along the column direction away from the bonding area BA, so as to minimize the space occupied by the touch trace 222.

[0047] Figure 4 Show Figure 1 A schematic diagram of the pixel architecture of the array substrate.

[0048] In some embodiments, the light-transmitting conductive layer 13 further includes a first pixel electrode 131 and a second pixel electrode 132 arranged alternately along the row and column directions and having opposite polarities, and a shielded common electrode trace 130 is located between the first pixel electrode 131 and the second pixel electrode 132.

[0049] The pixel architecture of array substrate 1 can be of many types, such as Figure 4 The diagram shows the pixel architecture of the flip-pixel structure. The first pixel electrode 131 and the second pixel electrode 132 are arranged alternately along the row and column directions with opposite polarities. That is, the polarities of the first pixel electrode 131 and the second pixel electrode 132 are set alternately with "+" and "-" along the row and column directions. This can spatially average the voltage polarity of pixels of the same seed, effectively improving display abnormalities such as crosstalk or flicker on the display panel and improving the display quality of the display panel.

[0050] In some embodiments, the array substrate 1 further includes a color resist layer located between the driving array layer 12 and the light-transmitting conductive layer 13. The color resist layer includes color resist units corresponding to the first pixel electrode 131 and the second pixel electrode 132, respectively. This is COA (Color-filter on Array) technology, an integration technology that directly fabricates the color resist layer on the array substrate 1, which can reduce alignment errors between the opposing substrate 2 and the array substrate 1. Additionally, a data line D is provided between adjacent color resist units, and a shielded common electrode trace 130 is used to shield the data line D from light, thereby improving the contrast of the display panel.

[0051] In some embodiments, the opposing substrate 2 further includes a color resist layer located between the second substrate 21 and the common electrode layer 22, i.e., the opposing substrate 2 is a color filter substrate. The color resist layer includes color resist units corresponding to the first pixel electrode 131 and the second pixel electrode 132, respectively. In addition, a data line D is disposed between adjacent color resist units, and the shielded common electrode trace 130 is used to shield the data line D from light to improve the contrast of the display panel.

[0052] Second Embodiment

[0053] Figure 5 A cross-sectional structural schematic diagram of the display panel provided in the second embodiment of this application is shown; Figure 6 Show Figure 5 The diagram shows a top view of the display panel structure. Figure 7 Show Figure 6 A schematic diagram of the longitudinal cross-sectional structure of the conductive particles.

[0054] like Figures 5 to 7 As shown, the display panel provided in the second embodiment of this application has a similar structure to the display panel in the first embodiment, except that the signal line is a scan line S, and the orthogonal projection of the shielded common electrode trace 130 on the first substrate 11 covers the orthogonal projection of the scan line S on the first substrate 11. Correspondingly, the positions of the bonding area BA and the frame adhesive 14 with conductive particles 141 are perpendicular to the positions in the first embodiment.

[0055] Specifically, the signal line includes a scan line S extending along the row direction, a shielded common electrode trace 130 extending along the row direction from the display area AA to the bonding area BA, and a frame adhesive 14 with conductive particles 141 located at the end of the shielded common electrode trace 130 away from the bonding area BA.

[0056] Furthermore, each touch electrode 221 is electrically connected to at least one touch trace 222, and the length of the touch trace 222 corresponding to the plurality of touch electrodes 221 gradually shortens along the row direction away from the bonding area BA.

[0057] Optionally, the touch electrode 221 is rectangular or rhomboid in shape. Each touch electrode 221 is electrically connected to at least one touch trace 222. Multiple touch electrodes 221 are arranged in an array. The touch trace 222 is connected between the touch electrode 221 and the conductive particles 141 of the frame adhesive 14. The length of the touch trace 222 corresponding to the multiple touch electrodes 221 gradually shortens along the row direction away from the bonding area BA, so as to minimize the space occupied by the touch trace 222.

[0058] Figure 8 Show Figure 5 A schematic diagram of the pixel architecture of the array substrate.

[0059] The pixel architecture of array substrate 1 can be of many types, such as Figure 8 As shown, array substrate 1 adopts a dual-gate pixel driving architecture, also known as a double-rate driving architecture (DRD). Compared with the normal architecture, its scan lines S are doubled, while its data lines D are halved. In the display panel, the increase in scan lines S only increases the GOA (Gate Driver on Array, line scan integrated on the array substrate) driving circuit and does not significantly increase production costs; while halving the data lines D reduces the number of integrated chips in the source driving circuit by half, effectively reducing the amount of printed circuit boards used, thus significantly saving the production cost of the display panel.

[0060] Specifically, such as Figure 8 As shown, the light-transmitting conductive layer 13 also includes pixel electrode pairs 133 connected to the same data line D and having the same polarity. Each pixel electrode pair 133 includes a pair of pixel electrodes, and two adjacent sets of pixel electrode pairs 133 in the same column are connected to different data lines D. Multiple sets of pixel electrode pairs 133 are arranged alternately in the row and column directions, and the shielded common electrode trace 130 is located between two adjacent rows of pixel electrode pairs 133. That is, the polarities of multiple sets of pixel electrode pairs 133 are alternately set in the row and column directions according to "+" and "-", so that the polarity of one set of pixel electrode pairs 133 is opposite to that of other sets of pixel electrode pairs 133 above, below, left, and right. This can spatially average the voltage polarity of the same seed pixels, effectively improving display abnormalities such as crosstalk or flicker on the display panel, and improving the display quality of the display panel.

[0061] Third Embodiment

[0062] The control method for a display panel provided in the third embodiment of this application is applied to any of the display panels described above, and the control method for the display panel includes:

[0063] During the touch phase, the thin film transistors on one side of the array substrate 1 are turned off, and the shielded common electrode trace 130 of the array substrate 1 outputs a touch signal. The touch signal is transmitted to the touch trace 222 and the corresponding touch electrode 221 on the opposite side of the substrate 2 via the conductive particles 141 of the frame adhesive 14.

[0064] During the display phase, the thin-film transistors on one side of the array substrate 1 are turned on, and the shielded common electrode trace 130 of the array substrate 1 outputs a common electrode signal. The common electrode signal is transmitted to the touch trace 222 and the corresponding touch electrode 221 on the opposite side of the substrate 2 via the conductive particles 141 of the frame adhesive 14.

[0065] Therefore, the thin-film transistors on one side of the array substrate 1 are switching elements, and the thin-film transistors can separate the display function and touch function of the display panel in terms of timing.

[0066] According to the control method of the display panel provided in the embodiments of this application, by multiplexing the shielded common electrode trace 130 used to block signal lines on one side of the array substrate 1 as a trace for transmitting touch signals, and by electrically connecting the shielded common electrode trace 130 to the touch trace 222 and the corresponding touch electrode 221 on the opposite side of the substrate 2 through the conductive particles 141 in the frame adhesive 14, embedded touch display integration can be achieved without increasing the process and photomask. In addition, since no new metal layer is added to arrange the touch traces, the aperture ratio of the display panel is not affected, which is beneficial to improving the light transmittance of the display panel.

[0067] Fourth embodiment

[0068] In addition, the fourth embodiment of this application also provides a display device, including: a display panel as described above and a touch chip 4, wherein the touch chip 4 is configured to output touch signals or common electrode signals to the shielded common electrode trace 130 of the array substrate 1 of the display panel. The thin-film transistor on one side of the array substrate 1 is a switching element, which can separate the display function and touch function of the display panel in timing.

[0069] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0070] As used herein, the term "substrate" refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned or may remain unpatterned. Furthermore, the substrate may comprise a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafers).

[0071] The term "layer" as used herein can refer to a portion of material comprising a region of thickness. A layer may extend over the entire underlying or overlying structure, or may have a extent smaller than that of the underlying or overlying structure. Furthermore, a layer may be a region of a homogeneous or non-homogeneous continuous structure, with a thickness less than that of the continuous structure. For example, a layer may be located between the top and bottom surfaces of the continuous structure, or between any pairs of lateral planes at the top and bottom surfaces. A layer may extend laterally, vertically, and / or along a tapered surface. A substrate may be a layer, and may include one or more layers, and / or may have one or more layers located on, above, and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductor and contact layers (forming contacts, interconnects, and / or vias therein) and one or more dielectric layers.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, comprising a display area and a border area located around the display area, the display panel comprising an array substrate, a counter substrate, and a liquid crystal layer disposed between the array substrate and the counter substrate, the array substrate comprising a driving array layer and a light-transmitting conductive layer sequentially formed on a first substrate, the driving array layer comprising a plurality of thin-film transistors and a plurality of signal lines electrically connected to the plurality of thin-film transistors, the light-transmitting conductive layer comprising a plurality of shielded common electrode traces, the orthographic projection of the shielded common electrode traces on the first substrate covering at least a portion of the orthographic projection of the signal lines on the first substrate; the array substrate further comprising a sealant formed in the border area, at least a portion of the sealant containing conductive particles; the counter substrate comprising a common electrode layer formed on a second substrate, characterized in that... The common electrode layer includes multiple touch electrodes arranged in an array. The touch electrodes are electrically connected to the conductive particles through touch traces. One end of the shielded common electrode trace is electrically connected to the conductive particles, and the other end is electrically connected to the touch chip. When the thin-film transistor is off, the shielded common electrode trace outputs a touch signal. When the thin-film transistor is on, the shielded common electrode trace outputs a common electrode signal.

2. The display panel according to claim 1, characterized in that, The array substrate further includes a bonding area located on one side of the display area, the bonding area being provided with touch pins, the touch pins being configured to be bonded to a circuit board, and the touch chip being disposed on the circuit board; or, the touch pins being configured to be bonded to the touch chip.

3. The display panel according to claim 2, characterized in that, The signal line includes a data line extending along the column direction, the shielded common electrode trace extends from the display area to the bonding area along the column direction, and the frame adhesive with the conductive particles is located at the end of the shielded common electrode trace away from the bonding area.

4. The display panel according to claim 3, characterized in that, Each of the touch electrodes is electrically connected to at least one touch trace, and the length of the touch traces corresponding to the plurality of touch electrodes gradually shortens along the column direction away from the bonding area.

5. The display panel according to claim 3 or 4, characterized in that, The light-transmitting conductive layer also includes a first pixel electrode and a second pixel electrode arranged alternately along the row and column directions and with opposite polarities, and the shielding common electrode trace is located between the first pixel electrode and the second pixel electrode.

6. The display panel according to claim 2, characterized in that, The signal line includes a scan line extending in the row direction, the shielded common electrode trace extends from the display area to the bonding area in the row direction, and the frame adhesive with the conductive particles is located at the end of the shielded common electrode trace away from the bonding area.

7. The display panel according to claim 6, characterized in that, Each of the touch electrodes is electrically connected to at least one touch trace, and the length of the touch traces corresponding to the plurality of touch electrodes gradually shortens along the row direction away from the bonding area.

8. The display panel according to claim 6 or 7, characterized in that, The light-transmitting conductive layer also includes pixel electrode pairs connected to the same data line and having the same polarity. Two adjacent sets of pixel electrode pairs in the same column are connected to different data lines. Multiple sets of pixel electrode pairs are arranged alternately in the row and column directions. The shielding common electrode trace is located between two adjacent rows of pixel electrode pairs.

9. A method for controlling a display panel as described in any one of claims 1 to 8, characterized in that, include: During the touch phase, the thin-film transistors on one side of the array substrate are turned off, and the shielded common electrode traces of the array substrate output touch signals. The touch signals are transmitted to the touch traces and corresponding touch electrodes on the opposite side of the substrate via the conductive particles of the frame adhesive. During the display phase, the thin-film transistors on one side of the array substrate are turned on, and the shielded common electrode traces of the array substrate output a common electrode signal. The common electrode signal is transmitted to the touch traces and corresponding touch electrodes on the opposite side of the substrate via the conductive particles of the frame adhesive.

10. A display device, characterized in that, include: The display panel as described in any one of claims 1 to 8; The touch chip is configured to output touch signals or common electrode signals to the shielded common electrode traces of the array substrate of the display panel.

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