Display panel and electronic equipment

Abstract

The invention provides a display panel and electronic equipment, and relates to the technical field of display. The display panel includes: a light emitting layer; the common electrode layer is connected to the multiple light-emitting units in the light-emitting layer, the common electrode layer comprises multiple electrode patterns which are mutually spaced to form multiple first electromagnetic induction electrodes, and the multiple first electromagnetic induction electrodes are used for detecting electromagnetic signals of the electromagnetic pen. According to the display panel, electromagnetic touch detection can be achieved, and meanwhile the display panel is small in thickness and low in manufacturing cost.

Description

Technical Field

[0001] The present application relates to the field of display technology, and more specifically, to a display panel and an electronic device. Background Art

[0002] Electromagnetic touch screen is a touch screen technology based on the principle of electromagnetic induction. Its basic principle is to identify the sliding of the electromagnetic pen on the screen through the magnetic field changes generated by the sensor under the screen during the operation of the electromagnetic pen. Electromagnetic touch screen has high sensitivity and accuracy, which makes electromagnetic touch screen widely used in smart phones, tablet computers, industrial control and other fields.

[0003] In traditional technology, electromagnetic touch screens generally adopt an external solution, that is, the display screen and the electromagnetic touch sensor board are two relatively independent devices, and the electromagnetic touch sensor board is attached to the back of the display screen to detect the electromagnetic signal emitted by the electromagnetic pen on the display screen. The electromagnetic touch screen of this technical solution is thicker and has a higher manufacturing cost. In view of this, how to provide a thinner and low-cost electromagnetic touch screen is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present application provides a display panel and an electronic device. The display panel can realize electromagnetic touch detection while having a thinner thickness and a lower manufacturing cost.

[0005] In a first aspect, a display panel is provided, comprising: a light-emitting layer; and a common electrode layer connected to a plurality of light-emitting units in the light-emitting layer, wherein the common electrode layer comprises a plurality of electrode patterns spaced apart from each other to form a plurality of first electromagnetic induction electrodes, wherein the plurality of first electromagnetic induction electrodes are used to detect electromagnetic signals of an electromagnetic pen.

[0006] Through the technical solution of the embodiment of the present application, the electromagnetic induction electrode used to realize the electromagnetic touch detection function is integrated into the common electrode layer of the display panel, which is conducive to reducing the overall thickness and manufacturing cost of the display panel with electromagnetic touch function. In addition, the patterning of the common electrode can improve the transmittance of the display panel, thereby reducing the power consumption of the display panel, extending the service life of the display panel, and is conducive to improving the display effect of the display panel.

[0007] In some possible embodiments, the display panel further includes: a capacitive touch layer, in which a plurality of second electromagnetic induction electrodes are arranged, wherein an electrode extension direction of the plurality of second electromagnetic induction electrodes is perpendicular to an electrode extension direction of the plurality of first electromagnetic induction electrodes, and the plurality of second electromagnetic induction electrodes and the plurality of first electromagnetic induction electrodes are used to jointly detect the electromagnetic signal of the electromagnetic pen.

[0008] Through the technical solution of this implementation, the display panel can not only simultaneously realize the display function, the electromagnetic touch function and the capacitive touch function, but the two electromagnetic induction layers used to realize the electromagnetic touch function can be respectively accommodated in the capacitive touch layer and the display panel layer, so as to realize the built-in electromagnetic touch in the display panel, which is beneficial to further reduce the overall thickness and manufacturing cost of the display panel while improving the comprehensive performance of the display panel.

[0009] In some possible implementations, the capacitive touch layer includes a bridge point layer and a touch electrode layer, the bridge point layer includes a plurality of bridging portions for bridging the touch electrodes in the touch electrode layer; the plurality of second electromagnetic induction electrodes are arranged in the bridge point layer, and the plurality of second electromagnetic induction electrodes and the plurality of bridging portions do not interfere with each other.

[0010] In this embodiment, the number of metal traces or metal points in the bridge point layer is small, so there is more margin space for setting multiple second electromagnetic induction electrodes to improve and optimize the electromagnetic touch function of the display panel. Through this embodiment, the capacitive touch function and the electromagnetic touch function of the display panel can be simultaneously guaranteed, so that the display panel has better comprehensive performance.

[0011] In some possible embodiments, the display panel further includes: an electromagnetic touch layer, on which a plurality of second electromagnetic induction electrodes are provided, wherein an electrode extension direction of the plurality of second electromagnetic induction electrodes is perpendicular to an electrode extension direction of the plurality of first electromagnetic induction electrodes, and the plurality of second electromagnetic induction electrodes and the plurality of first electromagnetic induction electrodes are used to jointly detect the electromagnetic signal of the electromagnetic pen.

[0012] In some possible implementations, the plurality of first electromagnetic induction electrodes include: a plurality of groups of first strip electrodes, wherein a group of first strip electrodes in the plurality of groups of first strip electrodes includes at least two first strip electrodes arranged side by side, and the at least two first strip electrodes are connected to form a coil structure.

[0013] In this embodiment, the first electromagnetic induction electrode is configured as a strip electrode, which can facilitate the manufacture of the electrode and improve the manufacturing efficiency and speed. In addition, the coil structure formed by connecting the strip electrodes can also better improve the electromagnetic touch detection function of the display panel.

[0014] In some possible embodiments, at least two first strip electrodes are connected to form a U-shaped or S-shaped single-turn coil structure, or, when a group of first strip electrodes includes at least three first strip electrodes, at least three first strip electrodes are connected to form a spiral multi-turn coil structure.

[0015] In this embodiment, two first strip electrodes are connected to form a U-shaped single-turn coil structure, the manufacturing process is relatively simple, and the effect of electromagnetic touch detection can be improved. Three or more first strip electrodes are connected to form an S-shaped single-turn coil structure, so that three or more first strip electrodes share one input terminal and one ground terminal, thereby reducing the number of input terminals and ground terminals and simplifying the process. In addition, three or more first strip electrodes are connected to form a spiral multi-turn coil structure, which is conducive to further improving the electromagnetic touch detection effect.

[0016] In some possible implementations, the first strip electrode is a straight strip electrode or a curved strip electrode.

[0017] Through the technical solution of this implementation, the first strip electrode in the common electrode layer is set to be a straight line or a curved line, which can be flexibly adapted to the optical design requirements of different products.

[0018] In some possible embodiments, the display panel also includes: a circuit layer for controlling the common electrode layer to drive the light-emitting layer to emit light, at least two first strip electrodes are connected to the circuit layer and connected through wiring in the circuit layer, and / or, transmit signals through wiring in the circuit layer, and / or, are grounded through wiring in the circuit layer.

[0019] Through the technical solution of this embodiment, the circuit layer of the display panel can be reused to realize the connection of multiple first strip electrodes in the first electromagnetic induction layer, and the space of the common electrode layer can be fully utilized to set longer strip electrodes to improve the detection performance and detection area of ​​electromagnetic touch. In addition, the circuit layer of the display panel is reused to realize signal transmission and grounding of the first electromagnetic induction layer without the need for additional electrical connectors, which can further reduce the overall thickness and manufacturing cost of the display panel with electromagnetic touch function.

[0020] In some possible implementations, at least two first strip electrodes are connected to the circuit layer at an edge of the display panel.

[0021] In this embodiment, the first strip electrode is connected to the circuit layer by jumper at the edge of the display panel, which will not affect the wiring design of the circuit layer in the display area and facilitate the signal wiring of the first strip electrode.

[0022] In some possible implementations, the plurality of second electromagnetic induction electrodes include: a plurality of groups of second strip electrodes, wherein one group of second strip electrodes in the plurality of groups of second strip electrodes includes at least two second strip electrodes arranged side by side, and the at least two second strip electrodes are connected to form a coil structure.

[0023] In some possible embodiments, at least two second strip electrodes are connected to form a U-shaped or S-shaped single-turn coil structure, or, when a group of second strip electrodes includes at least three second strip electrodes, at least three second strip electrodes are connected to form a spiral multi-turn coil structure.

[0024] In some possible embodiments, the display panel also includes: a circuit layer for controlling the electrode layer to drive the light-emitting layer, at least two second strip electrodes are connected to the circuit layer and connected through wiring in the circuit layer, and / or, transmit signals through wiring in the circuit layer, and / or, are grounded through wiring in the circuit layer.

[0025] In some possible implementations, at least two second strip electrodes are connected to the circuit layer at an edge of the display panel.

[0026] In some possible implementations, the electrode layer is a cathode layer of a display panel.

[0027] In a second aspect, an electronic device is provided, comprising: a display panel provided in the first aspect or any possible implementation manner of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a stacked structure of a display panel with an electromagnetic touch function provided in an embodiment of the present application.

[0029] Figure 2 is a schematic cross-sectional view of a display panel provided in an embodiment of the present application.

[0030] Figure 3 It is a schematic plan view of a common electrode layer provided in an embodiment of the present application.

[0031] Figure 4 is a schematic plan view of another common electrode layer provided in an embodiment of the present application.

[0032] Figure 5 is a schematic plan view of another common electrode layer provided in an embodiment of the present application.

[0033] Figure 6 is a schematic plan view of another common electrode layer provided in an embodiment of the present application.

[0034] Figure 7 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application.

[0035] Figure 8 is a schematic plan view of another common electrode layer provided in an embodiment of the present application.

[0036] Fig. 9 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application.

[0037] Fig.10 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application.

[0038] Fig.11 It is a schematic plan view of a bridge point layer provided in an embodiment of the present application.

[0039] Fig.12 is a schematic cross-sectional view of another display panel 200 provided in an embodiment of the present application.

[0040] Fig.13 It is a schematic structural block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0042] The present application relates to a display screen or a display panel. The display screen can be applied to a variety of fields and scenarios. For example, the display screen can be applied to 3C electronic products of computers, communications and consumer electronics, including but not limited to televisions, mobile phones, computers, laptops, tablet computers, personal digital assistants (PDAs), car computers, wearable devices, gaming devices, photographing devices, etc. The present application does not limit the specific type of electronic device where the display screen is located.

[0043] In addition, the display screen involved in the present application may be a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display screen, a low-temperature polycrystalline silicon (LTPS) OLED display screen, an oxide OLED display screen, a micro OLED display screen, etc. The present application does not limit the specific type of the display screen.

[0044] With the continuous development of display technology and higher user demands, display panels can realize touch functions in addition to display. Electromagnetic touch screens realized by electromagnetic resonance (EMR) technology are a type of screen with high sensitivity and accuracy and have been widely used in various fields.

[0045] Figure 1A schematic diagram of a stacked structure of a display panel with an electromagnetic touch function is shown.

[0046] like Figure 1 As shown, the display panel 100 may include: a display panel 110 and an electromagnetic touch module 120, wherein the display panel 110 may be, for example, an OLED display panel or other types. The electromagnetic touch module 120 is attached to the back of the display panel 110 to form an external electromagnetic touch display screen. Figure 1 In the example shown, the electromagnetic touch module may be an EMR module.

[0047] Among them, the electromagnetic touch module 120 can also be called an electromagnetic touch sensing board, which may include two antenna arrays or electromagnetic induction electrode arrays in the vertical direction and the horizontal direction. During use, the electromagnetic pen is a signal transmitter (transceiver), and the antenna array is a signal receiver (receiver). The coordinate position of the electromagnetic pen is calculated by the change of magnetic flux. Since the electromagnetic pen has a longitudinal pressure sensor, when the user writes and draws with the electromagnetic pen, when the pen tip is subjected to force, the pressure is transmitted to the pressure sensor through the pen core. The change in pressure causes the electromagnetic signal emitted by the electromagnetic pen to change, and the electromagnetic touch sensing board can show different pressure sensations according to the sensing signal.

[0048] Compared with capacitive pens, electromagnetic pens have higher precision and can achieve real handwriting. However, the disadvantage of this electromagnetic touch solution is that it does not support finger touch.

[0049] Therefore, in some embodiments, Figure 1 As shown, the display panel 100 may further include: a capacitive touch module 130, which may be disposed on the front side of the display panel 110, that is, the light-emitting side. As an example, Figure 1 The capacitive touch module 120 may be a capacitive touch panel (CTP). The capacitive touch module or CTP may be integrated inside the display panel 110 or outside the display panel 110. In some embodiments, the capacitive touch module 120 may adopt On-cell touch technology, Y-OCTA touch technology, or Flexible Multi-Layer On-Cell (FMLOC) touch technology, etc., and the specific implementation method is not limited in the embodiment of the present application.

[0050] By providing the electromagnetic touch module 120 and the capacitive touch module 130 in the display panel 100 , the display panel 100 can support both finger touch and electromagnetic pen touch, thereby meeting various needs of users.

[0051] In addition, if Figure 1 As shown, the display panel 100 may also include other optical structures to meet optical requirements. Figure 1 As shown, the display panel 100 may further include a polarizer (POL) 140, an optically clear adhesive (OCA) layer 150, and a cover layer 160. Optionally, a back plate layer 170 may be provided on the back of the entire display panel 100, for example, a surface conductive film (SCF) or stainless steel (SUS) as shown in the figure. The back plate layer 170 is conducive to improving the strength of the display panel 100 and achieving heat dissipation.

[0052] exist Figure 1 In the embodiment shown, the electromagnetic touch module 120 is externally mounted, which will make the overall thickness of the display panel 100 thicker and the manufacturing cost higher. In view of this, the embodiment of the present application provides a technical solution of embedding the electromagnetic touch module in the display panel, which can not only realize the electromagnetic touch function of the display panel, but also effectively reduce the overall thickness and manufacturing cost of the display panel.

[0053] Figure 2 A schematic cross-sectional view of a display panel 200 provided in an embodiment of the present application is shown.

[0054] like Figure 2 As shown, the display panel 200 includes: a light-emitting layer 210 and a common electrode layer 220, the common electrode layer 220 is connected to a plurality of light-emitting units in the light-emitting layer 210, and the common electrode layer 220 includes a plurality of electrode patterns spaced apart from each other to form a plurality of first electromagnetic induction electrodes 221, and the plurality of first electromagnetic induction electrodes 221 are used to detect the electromagnetic signal of the electromagnetic pen, thereby realizing the electromagnetic touch function of the display panel 200.

[0055] In a traditional display panel, the first electrodes (cathode or anode) of all pixels in the display panel are connected together to form a common electrode, and the second electrodes (anode or cathode) of all pixels are individually led out and controlled separately to realize the lighting of the pixels. Figure 2 In the example shown, the display panel 200 may include a common electrode layer 220 and a discrete electrode layer 230. The common electrode layer 220 may be a cathode layer or an anode layer, and correspondingly, the discrete electrode layer 230 may be an anode layer or a cathode layer. Optionally, the material of the cathode layer may be, for example, a magnesium-silver (Mg-Ag) alloy. The material of the anode layer may be, for example, an indium tin oxide (ITO) film.

[0056] Different from the traditional display panel, in the embodiment of the present application, the common electrode layer 220 is split from a whole into a plurality of electrode patterns spaced apart from each other, so that the plurality of electrode patterns can form a plurality of first electromagnetic induction electrodes 221 for realizing the function of detecting the electromagnetic signal of the electromagnetic pen.

[0057] Therefore, through the technical solution of the embodiment of the present application, the electromagnetic induction electrode of the electromagnetic touch module is integrated into the common electrode layer of the display panel, which is conducive to reducing the overall thickness and manufacturing cost of the display panel with electromagnetic touch function. In addition, the patterning of the common electrode can improve the transmittance of the display panel, thereby reducing the power consumption of the display panel, extending the service life of the display panel, and is conducive to improving the display effect of the display panel.

[0058] In some embodiments, the plurality of first electromagnetic induction electrodes 221 in the common electrode layer 220 may include: a plurality of groups of first strip electrodes, wherein a group of first strip electrodes in the plurality of groups of first strip electrodes may include at least two first strip electrodes arranged side by side, and the at least two first strip electrodes are connected to form a coil structure.

[0059] As a hint, Figure 3 A schematic plan view of a common electrode layer 220 provided in an embodiment of the present application is shown.

[0060] like Figure 3 As shown, in the common electrode layer 220, the plurality of first electromagnetic induction electrodes 221 are all linear strip electrodes, and the first electromagnetic induction electrodes 221 are also referred to as first strip electrodes in the embodiment of the present application. Every two adjacent first strip electrodes in the plurality of first strip electrodes form a group of electrodes, and the same ends of the two first strip electrodes are connected to each other, and the other ends can transmit signals and be grounded respectively. The two first strip electrodes can be connected to form a U-shaped single-turn coil structure.

[0061] In this embodiment, the first electromagnetic induction electrode is configured as a strip electrode, which can facilitate the manufacture of the electrode and improve the manufacturing efficiency and speed. In addition, the coil structure formed by connecting the strip electrodes can also better improve the electromagnetic touch detection function of the display panel.

[0062] In addition, the two first strip electrodes are connected to form a U-shaped single-turn coil structure, which has a relatively simple manufacturing process and can better improve the effect of electromagnetic touch detection.

[0063] As another indication, Figure 4 FIG. 2 shows a schematic plan view of another common electrode layer 220 provided in an embodiment of the present application.

[0064] like Figure 4As shown, in the common electrode layer 220, every three adjacent first strip electrodes among the plurality of first strip electrodes (i.e., the first electromagnetic induction electrodes 221) form a group of electrodes, and the three first strip electrodes are connected head to tail in sequence to form an S-shaped single-turn coil structure, and the two ends of the three first strip electrodes after being connected to each other can transmit signals and be grounded respectively.

[0065] In some other embodiments, each group of electrodes of the common electrode layer 220 may further include more than three first strip electrodes, and the three or more first strip electrodes may be arranged in the following manner: Figure 4 In the embodiment shown, the ends are connected sequentially to form a serpentine single-turn coil structure.

[0066] Through this implementation, three or more first strip electrodes are connected to form an S-shaped single-turn coil structure or a serpentine single-turn coil structure, so that the three or more first strip electrodes share one input terminal and one ground terminal, thereby reducing the number of input terminals and ground terminals and simplifying the process.

[0067] As another indication, Figure 5 FIG. 2 shows a schematic plan view of another common electrode layer 220 provided in an embodiment of the present application.

[0068] like Figure 5 As shown, in the common electrode layer 220, each three adjacent first strip electrodes in the plurality of first electromagnetic induction electrodes 221 form a group of electrodes, and the three first strip electrodes are connected to each other to form a spiral multi-turn coil structure. The two ends of the three first strip electrodes connected to each other can transmit signals and be grounded respectively.

[0069] In some other embodiments, each group of electrodes of the common electrode layer 220 may further include more than three first strip electrodes, and the three or more first strip electrodes may be arranged in the following manner: Figure 5 In the embodiment shown, the peripheral electrodes are sequentially connected to the inner electrodes, thereby forming a spiral multi-turn coil structure.

[0070] Through this implementation, three or more first strip electrodes are connected to form a spiral multi-turn coil structure, which is beneficial to further improve the electromagnetic touch detection effect.

[0071] Optionally, in the above Figures 3 to 5 In the illustrated embodiment, the connection lines connecting the first strip electrodes are not located in the common electrode layer 220 . In other words, the common electrode layer 220 may only form a plurality of first strip electrodes arranged side by side. Figures 3 to 5The dotted box in the figure shows the area where the common electrode layer 220 is located. The connection line connecting the first strip electrode can be realized through other layers of the display panel 200. For example, the first strip electrode in the common electrode layer 220 can be jumped to the circuit layer of the display panel 200, and the connection of the first strip electrode is realized through the metal wiring in the circuit layer. In addition, the transmission of the first strip electrode to the external signal or the grounding can also be realized by jumping to other layers of the display panel 200.

[0072] As an alternative implementation, Figure 6 FIG. 2 shows a schematic plan view of another common electrode layer 220 provided in an embodiment of the present application.

[0073] like Figure 6 As shown, the dotted box illustrates the area where the common electrode layer 220 is located. In this embodiment, a connection structure 222 connecting multiple first strip electrodes can be formed in the common electrode layer 220. For a spiral multi-coil structure, one end is located inside the coil. In some embodiments, the end located inside the coil can be jumped to other layers of the display panel 200, and routed from other layers to the edge of the display panel to achieve transmission or grounding of signals with external signals. In other embodiments, the end located inside the coil can also be jumped to other layers of the display panel 200 first, and then jumped back to the common electrode layer 220, and then jumped to the edge of the display panel through the lead-out structure 223 located outside the coil to achieve transmission or grounding of signals with external signals.

[0074] Figure 7 A schematic cross-sectional view of another display panel 200 provided in an embodiment of the present application is shown.

[0075] like Figure 7 As shown, the display panel 200 may further include: a circuit layer 240, which may be used to control the common electrode layer 220 to drive the light-emitting layer 210 to emit light. In a specific implementation, the circuit layer 240 may be used to control the common electrode layer 220 and the discrete electrode layer 230 to drive multiple light-emitting units in the light-emitting layer 210 to emit light.

[0076] In the common electrode layer 220, at least two first strip electrodes (i.e., first electromagnetic induction electrodes 221) in each group of electrodes may be connected to the circuit layer 240, and connected through the wiring in the circuit layer 240 to form a coil structure. Optionally, the at least two first strip electrodes may also transmit signals through the wiring in the circuit layer 240, and / or be grounded through the wiring in the circuit layer 240.

[0077] In an embodiment of the present application, the circuit layer 240 may include: a transistor layer for controlling the pixel light-emitting unit, and the transistor layer may include, for example: a channel layer, a source / drain layer, and a gate layer. In some implementations of the embodiments of the present application, the first strip electrode may be connected to the source / drain layer, and the connection, signal transmission, or grounding is achieved through the wiring in the source / drain layer. Optionally, the source / drain layer may be a titanium-aluminum-titanium (Ti-Al-Ti) structure, which has better conductivity and stability. In another implementation, the first strip electrode may be connected to the gate layer, and the connection, signal transmission, or grounding is achieved through the wiring in the gate layer.

[0078] See also Figure 7 As shown, the first strip electrode in the common electrode layer 220 can be connected to the circuit layer 240 through a jumper 241. The jumper 241 can be a metal trace that passes through multiple stacked layers between the common electrode layer 220 and the circuit layer 240. Optionally, the jumper 241 can be located in the frame area (non-display area) of the display panel 200, or in the display area of ​​the display panel 200.

[0079] The frame area of ​​the display panel 200 is located at the edge of the display panel. The first strip electrode is connected to the circuit layer 240 by a jumper at the edge of the display panel. On the one hand, it will not affect the wiring design of the circuit layer in the display area. On the other hand, it is also convenient for the signal wiring of the first strip electrode to be led out.

[0080] Under some special requirements, the first strip electrodes can also be connected to the circuit layer 240 by jumper wires in the display area of ​​the display panel 200, for example, Figure 6 In the illustrated embodiment, one end of the spiral coil structure located inside the coil is located in the display area, and the end needs to be connected to the circuit layer 240 by a jumper in the display area of ​​the display panel 200. In order to reduce the impact of the jumper on the routing of the original display area, a shorter routing line can be used to jump over the spiral coil structure, jump back to the common electrode layer 220, and extend to the edge of the display panel (i.e., the non-display area) through the lead-out structure 223 of the common electrode layer 220, and then jump to the circuit layer 240 located at the edge of the display panel through the lead-out structure.

[0081] Through the technical solution of the embodiment of the present application, the circuit layer of the display panel can be reused to realize the connection of multiple first strip electrodes in the first electromagnetic induction layer, and the space of the common electrode layer can be fully utilized to set longer strip electrodes to improve the detection performance and detection area of ​​electromagnetic touch. In addition, the circuit layer of the display panel is reused to realize signal transmission and grounding of the first electromagnetic induction layer without the need for additional electrical connectors, which can further reduce the overall thickness and manufacturing cost of the display panel with electromagnetic touch function.

[0082] In the above Figures 3 to 6In the illustrated embodiments, the first strip electrode is a straight strip electrode. Optionally, the first strip electrode may also be a curved strip electrode. As an example, Figure 8 FIG. 2 shows a schematic plan view of another common electrode layer 220 provided in an embodiment of the present application.

[0083] like Figure 8 As shown, in the common electrode layer 220, a plurality of first strip electrodes (i.e., first electromagnetic induction electrodes 221) are curved strip electrodes, and each two adjacent first strip electrodes in the plurality of first strip electrodes form a group of electrodes. The ends of the two first strip electrodes are connected in sequence to form an S-shaped single-turn coil structure, and the two ends of the two first strip electrodes after being connected to each other can transmit signals and be grounded respectively.

[0084] In other embodiments, each group of electrodes of the common electrode layer 220 may further include three or more curved first strip electrodes. The three or more first strip electrodes may be as follows: Figure 4 As shown, the ends are connected sequentially to form an S-shaped or serpentine single-turn coil structure.

[0085] In other embodiments, when the first strip electrodes are curved strip electrodes, at least two first strip electrodes in each group of electrodes may also form a spiral multi-turn coil structure. Figure 5 or Figure 6 The relevant description of the illustrated embodiment will not be repeated here.

[0086] Fig. 9 A schematic cross-sectional view of another display panel 200 provided in an embodiment of the present application is shown.

[0087] like Fig. 9 As shown, in the display panel 200, in addition to the light-emitting layer 210, the common electrode layer 220 and the discrete electrode layer 230 mentioned above, it can further include: an electromagnetic touch layer 270, in which a plurality of second electromagnetic induction electrodes are arranged, and the electrode extension direction of the plurality of second electromagnetic induction electrodes is perpendicular to the electrode extension direction of the plurality of first electromagnetic induction electrodes, and the plurality of second electromagnetic induction electrodes and the plurality of first electromagnetic induction electrodes are used to jointly detect the electromagnetic signal of the electromagnetic pen.

[0088] In the embodiment of the present application, the multiple first electromagnetic induction electrodes in the common electrode layer 220 of the display panel 200 and the multiple second electromagnetic induction electrodes in the electromagnetic touch layer 270 can form two antenna arrays along the X direction and the Y direction, so that the coordinate position of the electromagnetic pen on the surface of the display panel 200 can be calculated more accurately.

[0089] In some embodiments, Fig. 9 As shown, the electromagnetic touch layer 270 can be disposed on the surface of the encapsulation layer 250 . The encapsulation layer 250 is disposed on the surface of the common electrode layer 220 and can be used to encapsulate and protect the common electrode layer 220 .

[0090] Fig.10 A schematic cross-sectional view of another display panel 200 provided in an embodiment of the present application is shown.

[0091] like Fig.10 As shown, in the display panel 200, in addition to the light-emitting layer 210, the common electrode layer 220 and the discrete electrode layer 230 mentioned above, it can further include: a capacitive touch layer 260, in which a plurality of second electromagnetic induction electrodes are arranged, and the electrode extension direction of the plurality of second electromagnetic induction electrodes is perpendicular to the electrode extension direction of the plurality of first electromagnetic induction electrodes, and the plurality of second electromagnetic induction electrodes and the plurality of first electromagnetic induction electrodes are used to jointly detect the electromagnetic signal of the electromagnetic pen.

[0092] In the embodiment of the present application, the plurality of second electromagnetic induction electrodes can be accommodated in the capacitive touch layer 260. In other words, there is no need to separately set up independent film layers for the plurality of second electromagnetic induction electrodes, but the relevant stacked structure in the capacitive touch layer 260 can be reused to simultaneously set up the plurality of second electromagnetic induction electrodes.

[0093] Through the technical solution of the embodiment of the present application, the display panel can not only simultaneously realize the display function, the electromagnetic touch function and the capacitive touch function, but the two electromagnetic induction layers used to realize the electromagnetic touch function can be respectively accommodated in the capacitive touch layer and the display panel layer, so as to realize the built-in electromagnetic touch in the display panel, which is beneficial to further reduce the overall thickness and manufacturing cost of the display panel while improving the comprehensive performance of the display panel.

[0094] Optionally, the capacitive touch layer 260 in the embodiment of the present application may adopt a variety of capacitive touch structure solutions, for example, the On-cell touch structure, Y-OCTA touch structure or FMLOC touch structure described above. The embodiment of the present application does not limit the specific form of the capacitive touch layer 260.

[0095] In some embodiments, the capacitive touch layer 260 may include a bridge layer and a touch electrode layer, wherein the bridge layer includes a plurality of bridge portions for bridging the touch electrodes in the touch electrode layer. A plurality of second electromagnetic induction electrodes may be disposed in the bridge layer.

[0096] In this embodiment, the touch electrode layer in the capacitive touch layer 260 may include an electrode array arranged along the X direction and the Y direction, and a capacitor may be formed between the electrodes, and the touch detection of a finger or other touch object on the display panel may be realized by detecting the capacitor. The bridge point layer may realize the bridging between the electrodes in the X direction and the Y direction in the touch electrode layer.

[0097] Compared with the touch electrode layer, the number of metal traces or metal points in the bridge point layer is relatively small, so there is more margin space for setting multiple second electromagnetic induction electrodes to improve and optimize the electromagnetic touch function of the display panel. Through this implementation, the capacitive touch function and electromagnetic touch function of the display panel can be simultaneously guaranteed, so that the display panel has better comprehensive performance.

[0098] Alternatively, in some alternative implementations, the plurality of second electromagnetic induction electrodes may also be disposed in the touch electrode layer in the capacitive touch layer. Alternatively, the plurality of second electromagnetic induction electrodes may be disposed in both the touch electrode layer and the bridge layer in the capacitive touch layer.

[0099] Fig.11 A schematic plan view of a bridge point layer provided in an embodiment of the present application is shown.

[0100] like Fig.11 As shown, in the bridge point layer 261, the plurality of second electromagnetic induction electrodes 2611 are all linear strip electrodes, and the second electromagnetic induction electrodes 2611 are also referred to as second strip electrodes in the embodiment of the present application. The plurality of second strip electrodes do not interfere with the original bridge points (also referred to as bridge portions, shown as black squares in the figure) in the bridge point layer 261.

[0101] Optionally, since the first strip electrode in the above embodiment is used as a common electrode of the display panel in addition to being used as an electromagnetic induction electrode, the first strip electrode may have a certain width in order to cover the pixels in the display panel. The second strip electrode in the embodiment of the present application does not need to be reused for other functions like the first strip electrode, so the width of the second strip electrode can be designed to be smaller, for example, smaller than the width of the first strip electrode. In some embodiments, Fig.11 As shown, the second strip electrode may be a linear electrode.

[0102] Each two adjacent second strip electrodes in the plurality of second strip electrodes form a group of electrodes, the same ends of the two second strip electrodes are connected to each other, and the other ends can transmit signals and be grounded respectively. The two second strip electrodes can be connected to form a U-shaped single-turn coil structure.

[0103] Optionally, in the Fig.11In the illustrated embodiment, the connection lines connecting the second strip electrodes are not located in the bridge point layer 261 . In other words, the bridge point layer 261 may only form a plurality of second strip electrodes arranged side by side. Fig.11 The dotted box in the figure shows the area where the bridge layer 261 is located. The connection line connecting the second strip electrode can be realized through other layers of the display panel 200. For example, the second strip electrode in the bridge layer 261 can be jumped to the circuit layer of the display panel 200, and the connection of the second strip electrode is realized through the metal wiring in the circuit layer. In addition, the transmission of the second strip electrode to the external signal or the grounding can also be realized by jumping to other layers of the display panel 200.

[0104] Optionally, the jumper solution of the second strip electrode in the embodiment of the present application can refer to the above Figure 7 The jumper scheme of the first strip electrode in the illustrated embodiment. In some examples, the second strip electrode can be jumpered to the circuit layer 240 in the display panel 200 , for example, can be jumpered to the source / drain layer in the circuit layer 240 .

[0105] In some embodiments, the second strip electrode can be connected to the circuit layer 240 by jumper wires at the edge of the display panel, which will not affect the wiring design of the circuit layer in the display area and facilitate the signal wiring of the second strip electrode.

[0106] exist Fig.11 In the example shown, each group of electrodes includes two second strip electrodes, and the two second strip electrodes are connected to form a U-shaped single-turn coil structure. In other examples, each group of electrodes may also include three or more second strip electrodes, and the three or more second strip electrodes may be connected to form an S-shaped or serpentine single-turn coil structure. Alternatively, the three or more second strip electrodes may also be connected to form a spiral multi-turn coil structure. The connection of the three or more second strip electrodes may be similar to the connection method of the three or more first strip electrodes described above, and please refer to the above for details. Figures 4 to 7 The relevant description of the illustrated embodiment will not be repeated here.

[0107] Fig.12 A schematic cross-sectional view of another display panel 200 provided in an embodiment of the present application is shown.

[0108] like Fig.12 As shown, the display panel 200 includes a substrate layer 280, a circuit layer 240, a discrete electrode layer 230, a light emitting layer 210, a common electrode layer 220, a packaging layer 250 and a capacitive touch layer 260 which are stacked in sequence. The capacitive touch layer 260 includes a bridge layer 261, a touch insulating layer 263 and a touch electrode layer 262 which are stacked in sequence.

[0109] In the embodiment of the present application, the substrate layer 280 may also be referred to as a substrate layer, for example, a glass substrate. The circuit layer 240 may include a transistor layer for controlling pixel light emission, which is disposed above the substrate layer 280. The discrete electrode layer 230, the light emitting layer 210, and the common electrode layer 220 together form a plurality of pixel light emitting units. The discrete electrode layer 230 includes a plurality of discrete electrodes, and the circuit layer 240 may control the plurality of pixel light emitting units to emit light by controlling the plurality of discrete electrodes in the discrete electrode layer 230.

[0110] The encapsulation layer 250 is disposed above the common electrode layer 220 to encapsulate and protect the display-related stacked layers thereunder. A capacitive touch layer 260 may be further disposed above the encapsulation layer 250, wherein a touch insulating layer 263 is disposed between the bridge layer 261 and the touch electrode layer 262. Optionally, the surface of the touch electrode layer 262 may also be covered with a protective layer 264 to protect the touch electrode layer 262.

[0111] For other structural descriptions of each stacked layer in the embodiments of the present application, reference can be made to the relevant descriptions of the above embodiments, and no further elaboration will be given here.

[0112] The present application also provides an electronic device. Fig.13 A schematic structural block diagram of an electronic device 300 provided in an embodiment of the present application is shown.

[0113] like Fig.13 As shown, the electronic device 300 includes: the display panel 200 provided in any of the above embodiments.

[0114] Optionally, the electronic device 300 may further include a control device, which may be used to control the display panel 200 to realize display and electromagnetic touch detection. Furthermore, in the case where the display panel 200 includes a capacitive touch layer, the control device may also be used to control the capacitive touch detection of the capacitive touch layer. Optionally, the control device may be an integrated device (such as an integrated circuit chip) that synchronously controls the execution of the above three functions. Alternatively, the control device may also be a discrete device that is used to separately control the execution of the above three functions.

[0115] It should be noted that in the description of some embodiments above, the expression "connection" and its derivatives may be used. The term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The embodiments disclosed here are not limited to the contents of this article.

[0116] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0117] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of the layers and the area of ​​the regions are exaggerated for clarity. Therefore, variations in the shapes relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0118] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: include: Luminescent layer; The common electrode layer is connected to the plurality of light-emitting units in the light-emitting layer. The common electrode layer includes a plurality of electrode patterns spaced apart from each other to form a plurality of first electromagnetic induction electrodes. The plurality of first electromagnetic induction electrodes are used to detect the electromagnetic signal of the electromagnetic pen.

2. The display panel according to claim 1, characterized in that: Also includes: A capacitive touch layer is provided with a plurality of second electromagnetic induction electrodes, wherein the electrode extension direction of the plurality of second electromagnetic induction electrodes is perpendicular to the electrode extension direction of the plurality of first electromagnetic induction electrodes, and the plurality of second electromagnetic induction electrodes and the plurality of first electromagnetic induction electrodes are used to jointly detect the electromagnetic signal of the electromagnetic pen.

3. The display panel according to claim 2, characterized in that: The capacitive touch layer includes a bridge layer and a touch electrode layer, and the bridge layer includes a plurality of bridge portions for bridging the touch electrodes in the touch electrode layer; The plurality of second electromagnetic induction electrodes are disposed in the bridge point layer, and the plurality of second electromagnetic induction electrodes and the plurality of bridge portions do not interfere with each other.

4. The display panel according to claim 1, characterized in that: Also includes: The electromagnetic touch layer is provided with a plurality of second electromagnetic induction electrodes, the electrode extension direction of the plurality of second electromagnetic induction electrodes is perpendicular to the electrode extension direction of the plurality of first electromagnetic induction electrodes, and the plurality of second electromagnetic induction electrodes and the plurality of first electromagnetic induction electrodes are used to jointly detect the electromagnetic signal of the electromagnetic pen.

5. The display panel according to any one of claims 1 to 4, characterized in that: The plurality of first electromagnetic induction electrodes include: a plurality of groups of first strip electrodes, wherein one group of first strip electrodes in the plurality of groups of first strip electrodes includes at least two first strip electrodes arranged side by side, and the at least two first strip electrodes are connected to form a coil structure.

6. The display panel according to claim 5, characterized in that: The at least two first strip electrodes are connected to form a U-shaped or S-shaped single-turn coil structure, or, In the case where the group of first strip electrodes includes at least three first strip electrodes, the at least three first strip electrodes are connected to form a spiral multi-turn coil structure.

7. The display panel according to claim 5, characterized in that: The first strip electrodes are straight strip electrodes or curved strip electrodes.

8. The display panel according to claim 5, characterized in that: The display panel further includes: The circuit layer is used to control the common electrode layer to drive the light-emitting layer to emit light, and the at least two first strip electrodes are connected to the circuit layer and connected through the wiring in the circuit layer, and / or transmit signals through the wiring in the circuit layer, and / or are grounded through the wiring in the circuit layer.

9. The display panel according to claim 8, characterized in that: The at least two first strip electrodes are connected to the circuit layer at the edge of the display panel.

10. The display panel according to any one of claims 2 to 4, characterized in that: The plurality of second electromagnetic induction electrodes include: a plurality of groups of second strip electrodes, wherein one group of second strip electrodes in the plurality of groups of second strip electrodes includes at least two second strip electrodes arranged side by side, and the at least two second strip electrodes are connected to form a coil structure.

11. The display panel according to claim 10, characterized in that: The at least two second strip electrodes are connected to form a U-shaped or S-shaped single-turn coil structure, or, In the case where the group of second strip electrodes includes at least three second strip electrodes, the at least three second strip electrodes are connected to form a spiral multi-turn coil structure.

12. The display panel according to claim 10, characterized in that: The display panel further includes: The circuit layer is used to control the electrode layer to drive the light-emitting layer, and the at least two second strip electrodes are connected to the circuit layer and connected through the wiring in the circuit layer, and / or transmit signals through the wiring in the circuit layer, and / or are grounded through the wiring in the circuit layer.

13. The display panel according to claim 12, characterized in that: The at least two second strip electrodes are connected to the circuit layer at the edge of the display panel.

14. The display panel according to any one of claims 1 to 4, characterized in that: The common electrode layer is a cathode layer of the display panel.

15. The display panel according to any one of claims 1 to 4, characterized in that: The display panel includes a substrate layer, a circuit layer, a discrete electrode layer, a light-emitting layer, a common electrode layer, a packaging layer and a capacitive touch layer which are stacked in sequence, wherein the capacitive touch layer includes a bridge layer, a touch insulating layer and a touch electrode layer which are stacked in sequence.

16. An electronic device, characterized in that: include: A display panel as claimed in any one of claims 1 to 15.

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