Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, a light-emitting device layer, an encapsulation layer, a touch layer and a first via. The substrate comprises a substrate and a driving circuit layer arranged on one side of the substrate. The driving circuit layer comprises a positive voltage power line. The light-emitting device layer is arranged on the side of the driving circuit layer away from the substrate. The encapsulation layer is arranged on the side of the light-emitting device layer away from the substrate. The touch layer is arranged on the side of the encapsulation layer away from the substrate. The touch layer comprises a touch electrode and a virtual electrode. The number of the touch electrodes is multiple. There is a gap between the multiple touch electrodes. The virtual electrode is located in the gap. The touch electrode and the virtual electrode are insulated. The first via penetrates the light-emitting device layer and the encapsulation layer in the direction perpendicular to the substrate. The two ends of the first via in the direction perpendicular to the substrate extend to the driving circuit layer and the touch layer, respectively. The virtual electrode is electrically connected to the positive voltage power line through the first via. The application can improve the performance of the display panel.

Description

Technical Field

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

[0002] Organic light-emitting diode (OLED) and flat panel display devices based on light-emitting diode (LED) technologies are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the Invention

[0004] The purpose of this application is to provide a display panel and display device that can improve the performance of the display panel.

[0005] The first aspect of this application provides a display panel, which includes a substrate, a light-emitting device layer, an encapsulation layer, a touch layer, and a first via. The substrate includes a base and a driving circuit layer disposed on one side of the base, the driving circuit layer including a positive voltage power line; the light-emitting device layer is disposed on the side of the driving circuit layer away from the base; the encapsulation layer is disposed on the side of the light-emitting device layer away from the base; the touch layer is disposed on the side of the encapsulation layer away from the base, the touch layer including touch electrodes and virtual electrodes, the number of touch electrodes being multiple, the multiple touch electrodes having gaps between them, the virtual electrodes being located in the gaps, and the touch electrodes and virtual electrodes being insulated from each other; the first via penetrates the light-emitting device layer and the encapsulation layer respectively in a direction perpendicular to the base, and the two ends of the first via extend to the driving circuit layer and the touch layer respectively in a direction perpendicular to the base, the virtual electrode being electrically connected to the positive voltage power line through the first via.

[0006] In some embodiments, the light-emitting device layer includes a plurality of light-emitting units, and the orthographic projection of the touch electrode on the substrate does not overlap with the orthographic projection of the light-emitting unit on the substrate;

[0007] Preferably, the orthographic projection of the virtual electrode onto the substrate does not overlap with the orthographic projection of the light-emitting unit onto the substrate.

[0008] In some embodiments, the light-emitting device layer further includes a pixel definition layer, which includes a pixel defining portion and a pixel opening formed by the pixel defining portion, wherein the light-emitting unit is located within the pixel opening;

[0009] Preferably, the orthographic projection of the touch electrode onto the substrate is located within the orthographic projection of the pixel defining portion onto the substrate;

[0010] Preferably, the orthographic projection of the virtual electrode onto the substrate is located within the orthographic projection of the pixel limiting portion onto the substrate.

[0011] In some embodiments, a plurality of touch electrodes are arranged in a matrix, and the gap between the plurality of touch electrodes includes a first sub-gap and a second sub-gap. The first sub-gap extends along a first direction, and the second sub-gap extends along a second direction. The first direction and the second direction are perpendicular to each other.

[0012] Preferably, at least some of the virtual electrodes are located in the first sub-gap and the second sub-gap, respectively.

[0013] In some embodiments, the virtual electrode includes a plurality of virtual sub-electrodes, which are disconnected from each other. The number of first vias is multiple, and the plurality of virtual sub-electrodes are connected to the plurality of first vias in a one-to-one correspondence.

[0014] Preferably, a virtual sub-electrode is provided within the first sub-gap;

[0015] Preferably, a virtual sub-electrode is provided in the second sub-gap.

[0016] In some embodiments, the virtual electrode includes a first virtual segment and a second virtual segment, with a portion of the first virtual segment located within a first sub-gap and a portion of the second virtual segment located within a second sub-gap, and the first virtual segment and the second virtual segment are arranged in a cross-connection configuration.

[0017] Preferably, there are multiple first virtual segments, and the multiple first virtual segments are arranged at intervals;

[0018] Preferably, there are multiple second virtual segments, which are arranged at intervals.

[0019] Preferably, each first sub-gap is provided with a first virtual segment, and each second sub-gap is provided with a second virtual segment.

[0020] In some embodiments, the touch layer includes a connection layer and an electrode layer disposed sequentially along a direction away from the substrate, wherein both the touch electrode and the virtual electrode are disposed on the electrode layer; the touch layer also includes a lead wire, which includes a first lead wire and a second lead wire, wherein the first lead wire is located on the electrode layer and the second lead wire is located on the connection layer, wherein a portion of the touch electrode is connected to the first lead wire and another portion of the touch electrode is connected to the second lead wire;

[0021] Preferably, the touch layer includes an edge region and a middle region. The touch electrodes in the middle region are surrounded by virtual electrodes. The virtual electrodes in the edge region have openings. The touch electrodes in the edge region are connected to a first lead wire, and the first lead wire passes through the openings. The touch electrodes in the middle region are connected to a second lead wire.

[0022] In some embodiments, the first via is located in the edge region.

[0023] In some embodiments, the touch layer includes a first touch sub-layer and a second touch sub-layer disposed sequentially along a direction away from the substrate, and the virtual electrode includes a first virtual sub-electrode and a second virtual sub-electrode. The first virtual sub-electrode is disposed in the first touch sub-layer, and the second virtual sub-electrode is disposed in the second touch sub-layer. The display panel also includes a second via extending along a direction perpendicular to the substrate. The first virtual sub-electrode and the second virtual sub-electrode are connected through the second via, and the first virtual sub-electrode is connected to a positive voltage power line through the first via.

[0024] Secondly, embodiments of this application provide a display device including a display panel of any of the above embodiments.

[0025] This application provides a display panel and a display device. The display panel includes a substrate, a light-emitting device layer, an encapsulation layer, a touch layer, and a first via. The touch layer includes touch electrodes and virtual electrodes, which are insulated from each other. The virtual electrodes are electrically connected to a positive voltage power line through the first via. By connecting the virtual electrodes in parallel with the positive voltage power line, the total resistance of the positive voltage power line can be reduced, so that the voltage drop (IRDrop) when current flows through the positive voltage power line will not vary too much, thereby improving the uniformity of the displayed image. Moreover, there are multiple touch electrodes with gaps between them. By placing the virtual electrodes in the gaps, the area of ​​the virtual electrodes can be increased, thereby further reducing the total resistance of the positive voltage power line, further improving the uniformity of the displayed image, and enhancing the performance of the display panel. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A cross-sectional schematic diagram of a display panel provided in some embodiments of this application;

[0028] Figure 2 Top view of a display panel provided in some embodiments of this application;

[0029] Figure 3 Top view of a display panel provided in other embodiments of this application;

[0030] Figure 4 This is a partial cross-sectional schematic diagram of a display panel provided in other embodiments of this application;

[0031] Figure 5 This is a cross-sectional schematic diagram of a display panel provided in some embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. Display panel; 10. Substrate; 11. Substrate; 12. Driving circuit layer; 121. Positive voltage power line; 20. Light-emitting device layer; 21. Light-emitting unit; 211. First electrode; 212. Light-emitting layer; 213. Second electrode; 22. Pixel definition layer; 221. Pixel limiting portion; 222. Pixel opening; 30. Encapsulation layer; 31. First encapsulation sub-layer; 32. Second encapsulation sub-layer; 33. Third encapsulation sub-layer; 40. Touch layer; 41. Touch electrode; 42. Virtual electrode; 421. Virtual sub-electrode; 422. First virtual segment; 423. Second virtual segment; 424, opening; 425, first virtual sub-electrode; 426, second virtual sub-electrode; 43, gap; 431, first sub-gap; 432, second sub-gap; 44, connecting layer; 45, electrode layer; 46, lead wire; 461, first lead wire; 462, second lead wire; 471, edge region; 472, middle region; 481, first touch sub-layer; 482, second touch sub-layer; 49, bridging point; 51, first via; 52, second via; 60, buffer layer; 70, support layer; X, first direction; Y, second direction. Detailed Implementation

[0034] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0036] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0037] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] The light-emitting units of the display panel are connected to the driver chip, which provides the positive power supply voltage signal, via a positive power supply line. Since the positive power supply voltage signal is transmitted from the driver chip to the opposite side, and due to the resistance voltage drop (IR Drop) on the positive power supply voltage signal line (U=I×R, meaning the voltage drop is greatest at the far end of the driver chip), the luminous intensity of different light-emitting units varies along the direction from the near end to the far end of the driver chip. This results in poor uniformity of the displayed image and reduces the performance of the display panel.

[0039] This application provides a display panel, which may be an organic light-emitting diode (OLED) display panel, or other types of display panels, such as micro light-emitting diode (Micro-LED) or quantum light-emitting diode (QLED) display panels.

[0040] Please refer to the following: Figure 1 and Figure 2The first aspect of this application provides a display panel 100, which includes a substrate 10, a light-emitting device layer 20, an encapsulation layer 30, a touch layer 40, and a first via 51. The substrate 10 includes a substrate 11 and a driving circuit layer 12 disposed on one side of the substrate 11, the driving circuit layer 12 including a positive voltage power line 121; the light-emitting device layer 20 is disposed on the side of the driving circuit layer 12 facing away from the substrate 11; the encapsulation layer 30 is disposed on the side of the light-emitting device layer 20 facing away from the substrate 10; the touch layer 40 is disposed on the side of the encapsulation layer 30 facing away from the substrate 10. The 40 includes a touch electrode 41 and a virtual electrode 42. There are multiple touch electrodes 41, and there is a gap 43 between the multiple touch electrodes 41. The virtual electrode 42 is located in the gap 43, and the touch electrodes 41 and the virtual electrode 42 are insulated from each other. The first via 51 penetrates the light-emitting device layer 20 and the encapsulation layer 30 in a direction perpendicular to the substrate 10. The two ends of the first via 51 extend to the driving circuit layer 12 and the touch layer 40 in a direction perpendicular to the substrate 10, respectively. The virtual electrode 42 is electrically connected to the positive voltage power line 121 through the first via 51.

[0041] The substrate 10 includes a substrate 11 and a driving circuit layer 12 disposed on the substrate 11. The substrate 11 can be a rigid substrate made of materials such as glass or plastic, or a flexible substrate made of materials such as polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC), or cellulose acetate propionate (CAP). The driving circuit layer 12 contains a driving circuit for controlling the light emission of the light-emitting device layer 20. The driving circuit layer 12 is generally composed of inorganic film layers such as a metal layer, a semiconductor layer (active layer), and an insulating layer. By patterning these inorganic film layers, a driving circuit for controlling the light emission of the light-emitting device layer 20 can be formed. There are various ways to implement the specific circuit structure, which will not be described in detail here.

[0042] The light-emitting device layer 20 may include a plurality of spaced-apart light-emitting units 21, which may include light-emitting units 21 of different colors. For example, it may include blue light-emitting units 21, red light-emitting units 21, and green light-emitting units 21 arranged at intervals. In addition, each pixel unit may also have four or more light-emitting units 21, in addition to the above three colors of light-emitting units 21, plus light-emitting units 21 of other colors such as white. Each light-emitting unit 21 includes a first electrode 211, a light-emitting layer 212, and a second electrode 213 stacked in sequence, with the first electrode 211 disposed on the substrate 10. The light-emitting layer 212 includes a light-emitting material layer, a hole transport layer, and an electron transport layer, etc. When the first electrode 211 and the second electrode 213 are energized, electrons and holes migrate from the electron transport layer and the hole transport layer to the light-emitting material layer, respectively, and meet in the light-emitting material layer to form excitons that excite the light-emitting molecules, thereby generating visible light to achieve the purpose of display. One of the first electrode 211 and the second electrode 213 can serve as the anode of the light-emitting layer 212, and the other as the cathode of the light-emitting layer 212. In this embodiment, the first electrode 211 is used as the anode of the light-emitting layer 212 and the second electrode 213 is used as the cathode of the light-emitting layer 212 for illuminating purposes.

[0043] The positive voltage power line 121 in the driving circuit layer 12 is connected to the first electrode 211 to transmit a positive power supply voltage signal to each light-emitting unit 21 so that each light-emitting unit 21 emits light and controls the light intensity of the light-emitting unit 21.

[0044] The encapsulation layer 30 may include a first encapsulation sublayer 31, a second encapsulation sublayer 32, and a third encapsulation sublayer 33 sequentially disposed along a direction away from the substrate 10. The first and third encapsulation sublayers 31 and 33 may include inorganic materials such as silicon oxide, silicon nitride, or silicon oxynitride, while the second encapsulation sublayer 32 may include organic materials. The first encapsulation sublayer 31 protects each light-emitting unit 21 from the influence of the external environment (such as air and water), preventing air and moisture from penetrating into the display panel 100 and extending the lifespan and stability of the light-emitting unit 21. The first encapsulation sublayer 31 also prevents impurities and harmful substances from entering the display panel 100, thereby ensuring the performance and quality of the display panel 100. The organic material of the second encapsulation sublayer 32 has unique flexibility and good adhesion. Compared with inorganic materials, organic materials can better adapt to the minute deformations that the display panel 100 may undergo under different environments, and will not experience cracking due to panel bending or thermal expansion and contraction. The combination of multiple encapsulation layers, namely the first encapsulation sublayer 31, the second encapsulation sublayer 32, and the third encapsulation sublayer 33, further improves the encapsulation effect of the display panel 100.

[0045] The function of the touch layer 40 is to realize the sensing and transmission of touch signals. The touch electrode 41 can sense the capacitance change when touched and output an electrical signal to the driving circuit. The touch layer 40 can adopt self-capacitive touch or mutual capacitive touch.

[0046] Each touch electrode 41 of the touch layer 40 is connected to the touch driver chip via a lead 46, providing touch signals to the touch electrode 41. The virtual electrode 42 is simply an independent metal block or wire, not connected to any electrical signals. Gaps 43 exist between the multiple touch electrodes 41 to ensure the independence of each touch electrode 41's sensing. The touch electrodes 41 and the virtual electrodes 42 can be separated by an insulating material to ensure insulation between them, preventing electrical connection and ensuring that the touch signal is not short-circuited or interfered with by the virtual electrode 42.

[0047] The first via 51 originates from the positive voltage power line 121 of the driving circuit layer 12, passes vertically through the light-emitting device layer 20 and the package, and finally connects to the virtual electrode 42 of the touch layer 40. The interior of the first via 51 is filled with conductive material to electrically connect the virtual electrode 42 to the positive voltage power line 121. Multiple first vias 51 can be provided, spaced apart, to increase the stability of the electrical connection between the virtual electrode 42 and the positive voltage power line 121.

[0048] In this embodiment, the touch layer 40 of the display panel 100 includes touch electrodes 41 and virtual electrodes 42. The touch electrodes 41 and virtual electrodes 42 are insulated from each other. The virtual electrodes 42 are electrically connected to the positive voltage power line 121 through a first via 51. By connecting the virtual electrodes 42 in parallel with the positive voltage power line 121, the total resistance of the positive voltage power line 121 can be reduced, so that the resistance voltage drop (IR Drop) when current flows through the positive voltage power line 121 will not vary too much, thereby improving the uniformity of the displayed image. Moreover, there are multiple touch electrodes 41, and there are gaps 43 between the multiple touch electrodes 41. By placing the virtual electrodes 42 in the gaps 43, the area of ​​the virtual electrodes 42 can be increased, thereby further reducing the total resistance of the positive voltage power line 121, further improving the uniformity of the displayed image, and enhancing the performance of the display panel 100.

[0049] Optionally, the virtual electrode 42 and the touch electrode 41 are arranged in the same layer, that is, the virtual electrode 42 and the touch electrode 41 are formed by using the same mask and the same process steps, so as to save the number of masks, reduce the process preparation cost, and improve production efficiency.

[0050] The virtual electrode 42 and the touch electrode 41 can also be made of the same metal material to further improve the production efficiency of the display panel 100.

[0051] In some embodiments, the display panel 100 further includes a buffer layer 60 disposed between the encapsulation layer 30 and the touch layer 40. The buffer layer 60 can absorb and disperse the impact force on the display panel 100 from the outside, reducing damage to the internal structure, such as the encapsulation layer 30, the touch layer 40, and the underlying display elements, caused by external forces such as collisions and compression. This protects the performance and stability of the display panel 100 and reduces the risk of screen damage caused by external forces. Because the physical properties, such as the coefficient of thermal expansion, of different materials like the encapsulation layer 30 and the touch layer 40 differ, stress will be generated during the manufacturing process of the display panel 100 and under temperature changes during use. The buffer layer 60 can alleviate this stress concentration phenomenon, avoiding problems such as interlayer separation, cracking, or deformation caused by excessive stress, thereby improving the structural reliability and service life of the display panel 100.

[0052] In some embodiments, the light-emitting device layer 20 includes a plurality of light-emitting units 21, and the orthographic projection of the touch electrode 41 on the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 21 on the substrate 10.

[0053] In other words, when viewed from above the display panel 100, the touch electrode 41 is located in the non-light-emitting area between the light-emitting units 21. The light-emitting units 21 are not covered by the touch electrode 41, allowing light to pass directly through the encapsulation layer 30 and the touch layer 40. The metal material of the touch electrode 41 blocks the light from the light-emitting units 21 without affecting their light emission efficiency.

[0054] Preferably, the orthographic projection of the virtual electrode 42 onto the substrate 10 does not overlap with the orthographic projection of the light-emitting unit 21 onto the substrate 10.

[0055] In other words, when viewed from above the display panel 100, the virtual electrode 42 is located in the non-light-emitting area between the light-emitting units 21. Since the light-emitting units 21 are not covered by the virtual electrode 42, light can directly pass through the encapsulation layer 30 and the touch layer 40. The metal material of the virtual electrode 42 blocks the light from the light-emitting units 21, without affecting the light emission efficiency of the light-emitting units 21.

[0056] In some embodiments, the light-emitting device layer 20 further includes a pixel definition layer 22, which includes a pixel defining portion 221 and a pixel opening 222 formed by the pixel defining portion 221, with the light-emitting unit 21 located within the pixel opening 222. The pixel defining layer can reduce crosstalk between sub-pixels and improve the display effect of the display panel 100.

[0057] Preferably, the orthographic projection of the touch electrode 41 onto the substrate 10 is located within the orthographic projection of the pixel limiting portion 221 onto the substrate 10.

[0058] The pixel defining portion 221 can be formed using an insulating material (such as organic resin) to separate adjacent light-emitting units 21. The pixel defining portion 221 itself is a non-light-emitting area. The orthographic projection of the touch electrode 41 onto the substrate 10 is located above the orthographic projection of the pixel defining portion 221 onto the substrate 10, meaning that the touch electrode 41 is completely located above the non-light-emitting area outside the pixel opening 222, and will not block any light-emitting units 21, thus avoiding brightness loss due to the light-blocking properties of the touch electrode 41 material.

[0059] Preferably, the orthographic projection of the virtual electrode 42 onto the substrate 10 is located within the orthographic projection of the pixel limiting portion 221 onto the substrate 10.

[0060] The orthographic projection of the virtual electrode 42 onto the substrate 10 is located on the pixel limiting portion 221 onto the substrate 10. This means that the virtual electrode 42 is completely located above the non-light-emitting area outside the pixel opening 222, and will not block any light-emitting unit 21, thus avoiding brightness loss due to the light-blocking properties of the virtual electrode 42 material.

[0061] A support layer 70 (SPC) can be provided on the pixel definition layer 22, and the support layer 70 is located on the pixel limiting portion 221. The pixel definition layer 22 is usually made of organic materials (such as photosensitive resin) and has a relatively soft texture. When the display panel 100 is bent (such as a flexible screen) or subjected to external pressure, the pixel limiting portion 221 is prone to deformation, which can cause the pixel opening 222 to deform, affecting light emission or causing material leakage.

[0062] The support layer 70 is typically made of high-modulus organic materials (such as modified acrylic resins or siloxane polymers) or inorganic-organic composite materials, balancing flexibility and rigidity. By providing rigid support at the top of the pixel defining portion 221, the support layer 70 enhances the structural strength of the pixel defining portion 221, preventing it from collapsing, tilting, or breaking during bending, stacking, or bonding. It is particularly suitable for flexible displays (such as foldable screens) or ultra-thin display designs.

[0063] In some embodiments, a plurality of touch electrodes 41 are arranged in a matrix, and the gap 43 between the plurality of touch electrodes 41 includes a first sub-gap 431 and a second sub-gap 432. The first sub-gap 431 extends along a first direction X, and the second sub-gap 432 extends along a second direction Y. The first direction X and the second direction Y are perpendicular to each other.

[0064] The first direction X can be a row direction, and the second direction Y can be a column direction. The touch layer 40 in this embodiment can employ a self-capacitive touch method, that is, touch recognition is achieved by detecting the capacitance change between a single touch electrode 41 and ground. When a finger approaches, the parasitic capacitance between the touch electrode 41 and the human body increases, and this change is quantified through charge transfer or vibration circuitry. By arranging the touch electrodes 41 in a matrix, each touch electrode 41 operates independently, eliminating the need for row-column cross-scanning and requiring only a single channel, resulting in lower complexity of the driving circuitry.

[0065] Preferably, at least some of the virtual electrodes 42 are located within the first sub-gap 431 and the second sub-gap 432, respectively.

[0066] By making full use of the remaining space between the first sub-gap 431 and the second sub-gap 432, virtual electrodes 42 are arranged without affecting the space of the display panel 100 or increasing the size of the display panel 100, which is more conducive to achieving a thinner and lighter design of the display panel 100.

[0067] In some embodiments, the virtual electrode 42 includes a plurality of virtual sub-electrodes 421, which are disconnected from each other. The number of first vias 51 is multiple, and the plurality of virtual sub-electrodes 421 are connected to the plurality of first vias 51 in a one-to-one correspondence.

[0068] Multiple virtual sub-electrodes 421 can be respectively disposed in the first sub-gap 431 and / or the second sub-gap 432. Each virtual sub-electrode 421 is connected to the positive voltage power line 121 through a first via 51, so that the positive voltage power line 121 is connected in parallel with multiple virtual sub-electrodes 421, which greatly reduces the total resistance of the positive voltage power line 121, thereby reducing the resistance voltage drop and improving the uniformity of the display image of the display panel 100.

[0069] Preferably, a virtual sub-electrode 421 is provided within the first sub-gap 431.

[0070] A portion of the virtual sub-electrode 421 can extend along the first direction X and be disposed within the first sub-gap 431, with the virtual sub-electrode 421 spaced apart from the adjacent touch electrode 41. By disposing of the virtual sub-electrode 421 within the first sub-gap 431, the remaining space of the touch layer 40 of the display panel 100 can be fully utilized without increasing the size of the display panel 100, thus facilitating a thinner and lighter design for the display panel 100.

[0071] Preferably, a virtual sub-electrode 421 is provided within the second sub-gap 432.

[0072] A portion of the virtual sub-electrode 421 can extend along the second direction Y and be disposed within the second sub-gap 432, with the virtual sub-electrode 421 spaced apart from the adjacent touch electrode 41. By disposing of the virtual sub-electrode 421 within the second sub-gap 432, the remaining space of the touch layer 40 of the display panel 100 can be fully utilized without increasing the size of the display panel 100, thus facilitating a thinner and lighter design for the display panel 100.

[0073] like Figure 3 As shown, in some embodiments, the virtual electrode 42 includes a first virtual segment 422 and a second virtual segment 423. A portion of the first virtual segment 422 is located within a first sub-gap 431, and a portion of the second virtual segment 423 is located within a second sub-gap 432. The first virtual segment 422 and the second virtual segment 423 are arranged in a cross-connection configuration.

[0074] The first virtual segment 422 can extend along the first direction X, and the second virtual segment 423 extends along the second direction Y. The first virtual segment 422 can pass through multiple first sub-gap 431, and the second virtual segment 423 can pass through multiple second sub-gap 432. The first virtual segment 422 and the second virtual segment 423 converge and intersect at the center of the four touch electrodes 41, so the first virtual segment 422 and the second virtual segment 423 are electrically connected at this point, forming a grid-like conductive plane. Compared with a power transmission path in one direction, this grid structure expands the current transmission channel, increases the area of ​​the virtual electrode 42, and further reduces the total resistance of the positive voltage power line 121, thereby reducing the resistance voltage drop and further improving the uniformity of the display image of the display panel 100.

[0075] Preferably, there are multiple first virtual segments 422, and the multiple first virtual segments 422 are arranged at intervals.

[0076] Different first virtual segments 422 are in the first sub-gap 431 of different rows, utilizing the space of more rows of first sub-gap 431, further increasing the area of ​​virtual electrodes 42, further reducing the total resistance of positive voltage power lines 121, thereby reducing resistance voltage drop and further improving the uniformity of the display image of display panel 100.

[0077] Preferably, there are multiple second virtual segments 423, and the multiple second virtual segments 423 are arranged at intervals.

[0078] Different second virtual segments 423 are in the second sub-gap 432 of different columns, utilizing the space of more columns of second sub-gap 432, further increasing the area of ​​virtual electrodes 42, further reducing the total resistance of positive voltage power lines 121, thereby reducing resistance voltage drop and further improving the uniformity of the display image of display panel 100.

[0079] Preferably, each first sub-gap 431 is provided with a first virtual segment 422, and each second sub-gap 432 is provided with a second virtual segment 423.

[0080] By making full use of each first sub-gap 431 and second sub-gap 432, the virtual electrode 42 is evenly distributed to each gap 43, maximizing the use of the remaining space of the touch layer 40 of the display panel 100. This not only avoids increasing the size of the display panel 100, which is conducive to the design of a thinner and lighter display panel 100, but also further increases the area of ​​the virtual electrode 42, further reduces the total resistance of the positive voltage power line 121, and further improves the uniformity of the display image of the display panel 100.

[0081] like Figure 4 As shown, in some embodiments, the touch layer 40 includes a connection layer 44 and an electrode layer 45 sequentially disposed along a direction away from the substrate 10. The touch electrode 41 and the virtual electrode 42 are both disposed on the electrode layer 45. The touch layer 40 also includes a lead-out line 46, which includes a first lead-out sub-line 461 and a second lead-out sub-line 462. The first lead-out sub-line 461 is located on the electrode layer 45, and the second lead-out sub-line 46 is located on the connection layer 44. Part of the touch electrode 41 is connected to the first lead-out sub-line 461, and another part of the touch electrode 41 is connected to the second lead-out sub-line 462.

[0082] The electrode layer 45 carries the touch electrode 41 and the virtual electrode 42. The touch electrode 41 is used to sense the capacitance change during touch operation and convert the touch signal into an electrical signal, adopting a self-capacitive touch method. The virtual electrode 42 is distributed in the gap 43 between the touch electrodes 41 and is connected to the positive voltage power line 121 to reduce the resistance voltage drop and improve the display uniformity.

[0083] Each touch electrode 41 is connected to an independent lead 46, and the signal of each touch electrode 41 is transmitted independently, reducing detection errors caused by signal crosstalk and improving the accuracy of touch positioning. Since the first virtual segment 422 and the second virtual segment 423 intersect each other, if all the lead 46 of the touch electrodes 41 are placed on the same layer, short circuits are likely to occur.

[0084] The connection layer 44 is located below the electrode layer 45. It mainly provides an independent wiring space for the second lead 462, avoids the risk of short circuit between the second lead 462 and the electrode of the electrode layer 45, and optimizes the signal transmission path.

[0085] The first lead-out sub-line 461 is disposed within the electrode layer 45 and is directly connected to a portion of the touch electrodes 41. The first lead-out sub-line 461 is responsible for leading out the touch signals generated by the touch electrodes 41 to which it is connected to to the subsequent signal processing circuit. Since it is on the same layer as the touch electrodes 41, the connection is relatively direct, and the signal transmission path can be shorter, which helps to reduce loss and interference during signal transmission.

[0086] The second lead-out sub-line 462 is located in the connection layer 44 and is connected to another part of the touch electrodes 41. These touch electrodes 41 may be touch electrodes 41 that are not convenient to directly connect to the lead-out lines 46 in the electrode layer 45. The second lead-out sub-line 462 is connected to the corresponding touch electrodes 41 in the electrode layer 45 through vias or other connecting devices, transmitting the touch signal from the electrode layer 45 to the connection layer 44 and then further leading it out. This layered arrangement of the lead-out lines 46 increases the flexibility of wiring and can better adapt to complex layouts of touch electrodes 41 and virtual electrodes 42 as well as signal transmission requirements.

[0087] Preferably, the touch layer 40 includes an edge region 471 and a middle region 472. The outer periphery of the touch electrode 41 in the middle region 472 is surrounded by a virtual electrode 42. The virtual electrode 42 on the outer periphery of the touch electrode 41 in the edge region 471 has an opening 424. The touch electrode 41 in the edge region 471 is connected to a first lead-out sub-line 461, and the first lead-out sub-line 461 passes through the opening 424. The touch electrode 41 in the middle region 472 is connected to a second lead-out sub-line 462.

[0088] The edge area 471 can be the part near the border of the display panel 100, and the middle area 472 is the area remaining excluding the edge area 471.

[0089] The touch electrode 41 in the edge region 471 is completely surrounded by the virtual electrode 42 on the outer periphery. However, the virtual electrode 42 on the outer periphery of the touch electrode 41 in the edge region 471 has an opening 424, which provides wiring space for the first lead 461, allowing the first lead 461 to pass through the opening 424 and be disposed in the electrode layer 45. The shape of the opening 424 can be rectangular, L-shaped, or elliptical, etc.

[0090] In the intermediate region 472, each touch electrode 41 is completely surrounded by a virtual electrode 42. If the touch electrode 41 in the intermediate region 472 is connected to the first lead-out sub-line 461 on the same layer for signal transmission, a cross-short circuit will occur between the lead-out sub-line 461 and the virtual electrode 42. Therefore, connecting the touch electrode 41 in the intermediate region 472 to the second lead-out sub-line 462 on a different layer for signal transmission can reduce the risk of short circuit.

[0091] In some embodiments, the first via 51 is located in the edge region 471.

[0092] Photolithography is a key process in the manufacturing of the display panel 100, used to precisely depict circuit patterns. When the first via 51 is located in the edge region 471, the design and fabrication of the photomask for the via is relatively simple during the photolithography process. Because the edge region 471 has relatively open space, there is no need to meticulously avoid complex internal circuit structures, reducing defects caused by alignment errors and pattern complexity during the photolithography process. The display panel 100 is composed of a multi-layer structure, and each layer needs to be precisely aligned. The first via 51 penetrates multiple layers, including the light-emitting device layer 20 and the encapsulation layer 30. Setting the first via 51 in the edge region 471 makes it easier to identify and calibrate the alignment marks of each layer at the edge. Compared to setting the first via 51 in the middle region 472 of the panel, the inter-layer alignment operation in the edge region 471 is simpler, reducing the risk of misalignment of the first via 51 due to inter-layer misalignment.

[0093] like Figure 5 As shown, in some embodiments, the touch layer 40 includes a first touch sub-layer 481 and a second touch sub-layer 482 sequentially disposed along a direction away from the substrate 10. The virtual electrode 42 includes a first virtual sub-electrode 425 and a second virtual sub-electrode 426. The first virtual sub-electrode 425 is disposed in the first touch sub-layer 481, and the second virtual sub-electrode 426 is disposed in the second touch sub-layer 482. The display panel 100 also includes a second via 52 extending along a direction perpendicular to the substrate 10. The first virtual sub-electrode 425 and the second virtual sub-electrode 426 are connected through the second via 52. The first virtual sub-electrode 425 is connected to the positive voltage power line 121 through the first via 51.

[0094] The touch layer 40 in this embodiment adopts a capacitive touch method, including a first touch sublayer 481 and a second touch sublayer 482. Touch electrodes 41 can be disposed in the first touch sublayer 481, and the lower second touch sublayer 482 can be provided with bridging points 49 connecting the upper touch electrodes 41, i.e., bridging connections. The bridging points 49 act as bridges, spanning the gaps 43 between adjacent touch electrodes 41 in the first touch sublayer 481, thus achieving electrical connections between different touch electrodes 41. This bridging arrangement optimizes the layout and connection method of the touch electrodes 41, solving the problem of connecting complex touch electrode patterns within a limited space.

[0095] For the capacitive touch layer 40, the second touch sub-layer 482 has ample remaining space, resulting in more usable gaps 43. Virtual electrodes 42 can be placed in the gaps 43 between the first touch sub-layer 481 and the second touch sub-layer 482. The first virtual sub-electrode 425 can be placed in the gap 43 between the touch electrodes 41 of the first touch sub-layer 481, and the second virtual sub-electrode 426 can be placed in the gap 43 between the bridging points 49 of the second touch sub-layer 482, spaced apart from the bridging points 49 and insulated from each other. The second via 52, like the first via 51, extends along a direction perpendicular to the substrate 10. The first via 51 and the second via 52 can be on the same vertical line or staggered.

[0096] After the first virtual sub-electrode 425 and the second virtual sub-electrode 426 are connected through the second via 52, they are then connected to the positive voltage power line 121 through the first via 51. This can further increase the area of ​​the virtual electrode 42, further reduce the resistance voltage drop of the positive voltage power line 121, and further improve the uniformity of the display image of the display panel 100.

[0097] Secondly, embodiments of this application provide a display device including a display panel 100 of any of the above embodiments. Since this display device employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0098] The display device can be any device with display function, such as mobile devices such as mobile phones, tablets, laptops, handheld computers, in-vehicle electronic devices, wearable devices, ultra-mobile personal computers (UMPCs), netbooks, or personal digital assistants (PDAs), as well as non-mobile devices such as personal computers (PCs), televisions (TVs), ATMs, or self-service machines.

[0099] While the embodiments disclosed in this application are as described above, the content is merely for the purpose of facilitating understanding of this application and is not intended to limit the invention. Any person skilled in the art to which this application pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed in this application; however, the scope of protection of this application shall still be determined by the scope defined in the appended claims.

[0100] The above description is merely a specific embodiment of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, substitutions for other connection methods described above can be made by referring to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

Claims

1. A display panel, characterized in that, include: A substrate includes a substrate and a driving circuit layer disposed on one side of the substrate, the driving circuit layer including a positive voltage power line; A light-emitting device layer is disposed on the side of the driving circuit layer opposite to the substrate; An encapsulation layer is disposed on the side of the light-emitting device layer opposite to the substrate; A touch layer is disposed on the side of the encapsulation layer opposite to the substrate. The touch layer includes touch electrodes and virtual electrodes. There are multiple touch electrodes with gaps between them. The virtual electrodes are located in the gaps and are insulated from each other. The first via penetrates the light-emitting device layer and the encapsulation layer in a direction perpendicular to the substrate. The two ends of the first via extend to the driving circuit layer and the touch layer in a direction perpendicular to the substrate, respectively. The virtual electrode and the positive voltage power line are electrically connected through the first via.

2. The display panel according to claim 1, characterized in that, The light-emitting device layer includes multiple light-emitting units, and the orthographic projection of the touch electrode on the substrate does not overlap with the orthographic projection of the light-emitting unit on the substrate; Preferably, the orthographic projection of the virtual electrode on the substrate does not overlap with the orthographic projection of the light-emitting unit on the substrate.

3. The display panel according to claim 2, characterized in that, The light-emitting device layer further includes a pixel definition layer, which includes a pixel defining portion and a pixel opening formed by the pixel defining portion, and the light-emitting unit is located within the pixel opening; Preferably, the orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the pixel defining portion on the substrate; Preferably, the orthographic projection of the virtual electrode onto the substrate is located within the orthographic projection of the pixel defining portion onto the substrate.

4. The display panel according to claim 1, characterized in that, The plurality of touch electrodes are arranged in a matrix, and the gap between the plurality of touch electrodes includes a first sub-gap and a second sub-gap. The first sub-gap extends along a first direction, and the second sub-gap extends along a second direction. The first direction and the second direction are perpendicular to each other. Preferably, at least a portion of the virtual electrodes are located within the first sub-gap and the second sub-gap, respectively.

5. The display panel according to claim 4, characterized in that, The virtual electrode includes multiple virtual sub-electrodes, which are disconnected from each other. The number of first vias is multiple, and the multiple virtual sub-electrodes are connected to the multiple first vias in a one-to-one correspondence. Preferably, the virtual sub-electrode is disposed within the first sub-gap; Preferably, the virtual sub-electrode is disposed within the second sub-gap.

6. The display panel according to claim 4, characterized in that, The virtual electrode includes a first virtual segment and a second virtual segment. Part of the first virtual segment is located within the first sub-gap, and part of the second virtual segment is located within the second sub-gap. The first virtual segment and the second virtual segment are arranged in a cross-connection configuration. Preferably, there are multiple first virtual segments, and these multiple first virtual segments are arranged at intervals. Preferably, there are multiple second virtual segments, and the multiple second virtual segments are arranged at intervals; Preferably, each of the first sub-gap is provided with the first virtual segment, and each of the second sub-gap is provided with the second virtual segment.

7. The display panel according to claim 6, characterized in that, The touch layer includes a connection layer and an electrode layer sequentially disposed along a direction away from the substrate. Both the touch electrode and the virtual electrode are disposed on the electrode layer. The touch layer also includes lead lines, which include a first lead sub-line and a second lead sub-line. The first lead sub-line is located on the electrode layer, and the second lead sub-line is located on the connection layer. Part of the touch electrode is connected to the first lead sub-line, and another part of the touch electrode is connected to the second lead sub-line. Preferably, the touch layer includes an edge region and a middle region. The outer periphery of the touch electrode in the middle region is surrounded by the virtual electrode. The virtual electrode on the outer periphery of the touch electrode in the edge region has an opening. The touch electrode in the edge region is connected to the first lead wire, and the first lead wire passes through the opening. The touch electrode in the middle region is connected to the second lead wire.

8. The display panel according to claim 7, characterized in that, The first via is located in the edge region.

9. The display panel according to claim 1, characterized in that, The touch layer includes a first touch sub-layer and a second touch sub-layer sequentially disposed along a direction away from the substrate. The virtual electrode includes a first virtual sub-electrode and a second virtual sub-electrode. The first virtual sub-electrode is disposed in the first touch sub-layer, and the second virtual sub-electrode is disposed in the second touch sub-layer. The display panel also includes a second via extending along a direction perpendicular to the substrate. The first virtual sub-electrode and the second virtual sub-electrode are connected through the second via. The first virtual sub-electrode is connected to the positive voltage power line through the first via.

10. A display device, characterized in that, The display panel includes any one of claims 1-9.

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