Display device, display panel and manufacturing method thereof

Abstract

The present disclosure provides a display device, a display panel and a manufacturing method thereof, which belong to the field of display technology. The display panel includes a substrate; a touch layer is arranged on one side of the substrate, including a first electrode and a second electrode; a first floating electrode layer is arranged on the side of the touch layer away from the substrate, the first floating electrode layer includes a first floating electrode, and the orthographic projection of the first floating electrode on the substrate overlaps with the orthographic projection of the first electrode on the substrate at least partially; a second floating electrode layer is arranged on the side of the first floating electrode layer away from the substrate, the second floating electrode layer includes a second floating electrode, and the orthographic projection of the second floating electrode on the substrate overlaps with the orthographic projection of the first electrode on the substrate at least partially; a protective layer is arranged on the side of the second floating electrode layer away from the substrate. The display panel can effectively reduce the loss of coupling capacitance between the user's finger and the touch layer, thereby helping to ensure the magnitude of the electrostatic force at the finger tip and ensure the normal tactile feedback.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display device, a display panel and a manufacturing method thereof. Background Art

[0002] Display screens are becoming more and more abundant and convenient for people's daily lives. With the development of technology, people's demand for the experience of display screen operation is also getting higher and higher. Users expect to experience tactile feedback such as the texture and contour of the display pattern when operating the display screen with their fingers.

[0003] The existing electrostatic force tactile feedback solution is to make a floating electrode on the cover plate and protect it with a hardened layer. However, due to the thin thickness of the hardened coating, the floating electrode is still at high risk of scratching, and when applied to bendable products, there is also a risk of breaking the wire.

[0004] The above information disclosed in the Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may include information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0005] The purpose of the present disclosure is to provide a display device, a display panel and a manufacturing method thereof, wherein the display panel can effectively reduce the loss of coupling capacitance between the user's finger and the touch layer, thereby helping to ensure the size of the electrostatic force at the finger tip and ensuring that the user can experience tactile feedback content such as the texture and contour of the display pattern.

[0006] In order to achieve the above-mentioned invention object, the present disclosure adopts the following technical solutions:

[0007] According to a first aspect of the present disclosure, there is provided a display panel, comprising:

[0008] substrate;

[0009] A touch layer, disposed on one side of the substrate, the touch layer comprising a first electrode and a second electrode, the first electrode and the second electrode being insulated from each other;

[0010] a first floating electrode layer, disposed on a side of the touch layer away from the substrate, the first floating electrode layer and the touch layer being insulated from each other, the first floating electrode layer comprising a first floating electrode, an orthographic projection of the first floating electrode on the substrate at least partially overlapping with an orthographic projection of the first electrode on the substrate;

[0011] a second floating electrode layer, disposed on a side of the first floating electrode layer away from the substrate, the second floating electrode layer and the first floating electrode layer being insulated from each other, the second floating electrode layer comprising a second floating electrode, an orthographic projection of the second floating electrode on the substrate at least partially overlapping with an orthographic projection of the first electrode on the substrate;

[0012] The protection layer is disposed on a side of the second floating electrode layer facing away from the substrate and covers the second floating electrode layer.

[0013] In an exemplary embodiment of the present disclosure, the orthographic projection of the first floating electrode on the substrate completely covers the orthographic projection of the first electrode on the substrate, and the orthographic projection of the second floating electrode on the substrate completely covers the orthographic projection of the first electrode on the substrate.

[0014] In an exemplary embodiment of the present disclosure, the second floating electrode layer further includes a third floating electrode insulated from the second floating electrode, the third floating electrode is an island-shaped floating electrode separated from surrounding floating electrodes, and an orthographic projection of the third floating electrode on the substrate at least partially overlaps with an orthographic projection of the second electrode on the substrate.

[0015] In an exemplary embodiment of the present disclosure, the first floating electrode layer further includes a fourth floating electrode insulated from the first floating electrode, the fourth floating electrode is an island-shaped floating electrode separated from surrounding floating electrodes, and an orthographic projection of the fourth floating electrode on the substrate at least partially overlaps with an orthographic projection of the second electrode on the substrate.

[0016] In an exemplary embodiment of the present disclosure, an orthographic projection of the third floating electrode on the substrate at least partially overlaps with an orthographic projection of the fourth floating electrode on the substrate.

[0017] In an exemplary embodiment of the present disclosure, the orthographic projections of the first floating electrode layer and the second floating electrode layer on the substrate completely overlap.

[0018] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0019] A cover plate, disposed between the touch layer and the first floating electrode layer;

[0020] The insulating layer is disposed between the first floating electrode layer and the second floating electrode layer and covers the first floating electrode layer.

[0021] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0022] The cover plate is disposed between the first floating electrode layer and the second floating electrode layer.

[0023] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0024] A polarizing plate, disposed between the touch layer and the first floating electrode layer;

[0025] The optical adhesive layer is disposed between the polarizing plate and the first floating electrode layer.

[0026] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0027] A polarizing plate, disposed between the first floating electrode layer and the cover plate;

[0028] an insulating layer, disposed between the touch layer and the first floating electrode layer, and covering the touch layer;

[0029] The optical adhesive layer is arranged between the polarizing plate and the cover plate.

[0030] In an exemplary embodiment of the present disclosure, the first electrode, the second electrode, the first floating electrode, the second floating electrode, the third floating electrode, and the fourth floating electrode are made of a transparent conductive material.

[0031] According to a second aspect of the present disclosure, a method for manufacturing a display panel is also provided, comprising:

[0032] providing a substrate;

[0033] forming a touch layer, wherein the touch layer is formed on one side of the substrate, the touch layer comprises a first electrode and a second electrode, and the first electrode and the second electrode are insulated from each other;

[0034] forming a first floating electrode layer, wherein the first floating electrode layer is formed on a side of the touch layer away from the substrate, the first floating electrode layer and the touch layer are insulated from each other, the first floating electrode layer comprises a first floating electrode, and an orthographic projection of the first floating electrode on the substrate at least partially overlaps with an orthographic projection of the first electrode on the substrate;

[0035] forming a second floating electrode layer, wherein the second floating electrode layer is formed on a side of the first floating electrode layer away from the substrate, the second floating electrode layer and the first floating electrode layer are insulated from each other, the second floating electrode layer comprises a second floating electrode, and an orthographic projection of the second floating electrode on the substrate at least partially overlaps with an orthographic projection of the first electrode on the substrate;

[0036] A protection layer is formed, wherein the protection layer is formed on a side of the second floating electrode layer facing away from the substrate and covers the second floating electrode layer.

[0037] In an exemplary embodiment of the present disclosure, before forming the first floating electrode layer, the method further includes:

[0038] A cover plate is formed on a side of the touch layer away from the substrate.

[0039] In an exemplary embodiment of the present disclosure, before forming the second floating electrode layer, the method further includes:

[0040] A cover plate is formed on a side of the first floating electrode layer away from the substrate.

[0041] According to a third aspect of the present disclosure, a display device is also provided, comprising the display panel described in the first aspect.

[0042] The display panel provided by the present disclosure includes a substrate, a touch layer, a first floating electrode layer, a second floating electrode layer and a protective layer. The touch layer includes a first electrode and a second electrode, the first floating electrode layer includes a first floating electrode, the second floating electrode layer includes a second floating electrode, and the orthographic projections of the first floating electrode and the second floating electrode on the substrate overlap with the orthographic projection of the first electrode on the substrate. The present disclosure is conducive to increasing the coupling capacitance between the user's finger and the touch layer by setting two layers of floating electrode layers, thereby effectively improving the tactile feedback effect. In addition, when the second floating electrode layer is scratched or the first floating electrode layer is bent and broken, the two layers of floating electrode layers set by the present disclosure can effectively reduce the loss of coupling capacitance between the user's finger and the touch layer, thereby helping to ensure the size of the electrostatic force at the finger tip, and ensuring that the user can continue to experience the tactile feedback content such as the texture and contour of the display pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other features and advantages of the present disclosure will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0044] Figure 1 is a schematic diagram of a display panel structure in an exemplary embodiment of the present disclosure;

[0045] Figure 2 is a schematic diagram of a display panel structure in another exemplary embodiment of the present disclosure;

[0046] Figure 3 is a schematic diagram of a display panel structure in another exemplary embodiment of the present disclosure;

[0047] Figure 4 is a schematic diagram of the touch layer structure in an exemplary embodiment of the present disclosure;

[0048] Figure 5 is a schematic diagram of a touch layer structure in another exemplary embodiment of the present disclosure;

[0049] Figure 6is a schematic diagram of the structure of the first floating electrode layer in an exemplary embodiment of the present disclosure;

[0050] Figure 7 is a schematic diagram of the structure of the second floating electrode layer in an exemplary embodiment of the present disclosure;

[0051] Figure 8 It is a schematic diagram of a capacitor structure between a floating electrode layer and a touch layer in the related art;

[0052] Fig. 9 is a schematic diagram of a capacitor structure between a second floating electrode layer, a first floating electrode layer and a touch electrode layer in an exemplary embodiment of the present disclosure;

[0053] Fig.10 It is a schematic flow chart of a method for manufacturing a display panel in an exemplary embodiment of the present disclosure.

[0054] The main components in the figure are described as follows:

[0055] 01-substrate; 02-light-emitting layer; 03-encapsulation layer; 04-touch layer; 41-first electrode; 42-second electrode; 43-bridge; 05-polarizer; 06-optical adhesive layer; 07-cover plate; 08-first floating electrode layer; 81-first floating electrode; 82-fourth floating electrode; 09-insulating layer; 10-second floating electrode layer; 101-second floating electrode; 102-third floating electrode; 11-protective layer; 12-touch layer; 13-floating electrode layer. DETAILED DESCRIPTION

[0056] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and the concepts of the example embodiments are fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure.

[0057] In the drawings, the thickness of regions and layers may be exaggerated for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

[0058] The described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the main technical ideas of the present disclosure.

[0059] When a structure is “on” another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is “directly” disposed on the other structure, or that the structure is “indirectly” disposed on the other structure via another structure.

[0060] The terms "a", "an", "the" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to indicate an open-ended inclusive meaning and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc. The terms "first" and "second" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0061] Electrostatic tactile feedback technology changes the voltage applied to the touch screen to affect the Coulomb force received by the user's fingers, thereby changing the friction felt by the user's fingers during the operation, thereby achieving a tactile sensation on the touch screen.

[0062] In the related art, the tactile feedback technology of the touch display screen is usually to make a floating electrode layer on the cover plate of the display panel, and set a hardened protective film on the surface of the floating electrode layer. By changing the voltage of the touch electrode in the touch display screen, the voltage coupled between the floating electrode and the finger is changed, and then the friction force felt by the user's finger during the operation is changed, so that the user can experience the tactile feedback content such as the texture and contour of the display pattern during the operation.

[0063] However, in the related art, the hardened protective film on the surface of the floating electrode layer is very thin, so the floating electrode layer has a high risk of being scratched. Moreover, for foldable display products, the floating electrode layer also has the risk of bending and breaking, so that the coupling capacitance between the user's finger and the touch screen is insufficient, and the user cannot experience the tactile feedback content such as the texture and contour of the display pattern.

[0064] like Figure 1 , Figure 4 , Figure 6 and Figure 7As shown, in an embodiment of the present disclosure, a display panel is provided, comprising a substrate 01; a touch layer 04, which is disposed on one side of the substrate 01, the touch layer 04 comprises a first electrode 41 and a second electrode 42, the first electrode 41 and the second electrode 42 are insulated from each other; a first floating electrode layer 08, which is disposed on a side of the touch layer 04 away from the substrate 01, the first floating electrode layer 08 and the touch layer 04 are insulated from each other, the first floating electrode layer 08 comprises a first floating electrode 81, the orthographic projection of the first floating electrode 81 on the substrate 01 at least partially overlaps with the orthographic projection of the first electrode 41 on the substrate 01; a second floating electrode layer 10, which is disposed on a side of the first floating electrode layer 08 away from the substrate 01, the second floating electrode layer 10 and the first floating electrode layer 08 are insulated from each other, the second floating electrode layer 10 comprises a second floating electrode 101, the orthographic projection of the second floating electrode 101 on the substrate 01 at least partially overlaps with the orthographic projection of the first electrode 41 on the substrate 01; and a protective layer 11, which is disposed on a side of the second floating electrode layer 10 away from the substrate 01 and covers the second floating electrode layer 10.

[0065] The display panel provided by the present disclosure includes a substrate 01, a touch layer 04, a first floating electrode layer 08, a second floating electrode layer 10 and a protective layer 11. The touch layer 04 includes a first electrode 41 and a second electrode 42, the first floating electrode layer 08 includes a first floating electrode 81, and the second floating electrode layer 10 includes a second floating electrode 101, and the orthographic projections of the first floating electrode 81 and the second floating electrode 101 on the substrate 01 overlap with the orthographic projection of the first electrode 41 on the substrate 01. The present disclosure is conducive to increasing the coupling capacitance between the user's finger and the touch layer 04 by setting two layers of floating electrode layers, thereby effectively improving the tactile feedback effect. In addition, when the second floating electrode layer 10 is scratched or the first floating electrode layer 08 is bent and broken, the two layers of floating electrode layers set by the present disclosure can effectively reduce the loss of the coupling capacitance between the user's finger and the touch layer 04, thereby helping to ensure the size of the electrostatic force at the finger end, and ensuring that the user can continue to experience the tactile feedback content such as the texture and contour of the display pattern.

[0066] The components of the display panel provided in the embodiment of the present disclosure are described in detail below with reference to the accompanying drawings:

[0067] like Figures 1 to 3As shown, the present disclosure provides a display panel, which can be an OLED (Organic Light-Emitting Diode) display panel. The display panel includes a driving backplane and a light-emitting layer 02. The driving backplane includes a substrate 01 and a driving layer (not shown) disposed on one side of the substrate 01, the driving layer is provided with a driving circuit, and the light-emitting layer 02 is disposed on the side of the driving layer away from the substrate 01, including a plurality of light-emitting devices, and each light-emitting device of the light-emitting layer 02 can be driven to emit light by the driving circuit. Specifically, the driving circuit includes a pixel circuit, and the pixel circuit can be a pixel circuit such as 7T1C, 7T2C, 6T1C or 6T2C, as long as it can drive the light-emitting device to emit light, and its structure is not specifically limited here. The number of pixel circuits is the same as the number of light-emitting devices, and is connected to each light-emitting device in a one-to-one correspondence so as to control each light-emitting device to emit light respectively. Among them, nTmC means that a pixel circuit includes n transistors (represented by the letter "T") and m capacitors (represented by the letter "C").

[0068] The driving backplane may be formed by a plurality of film layers, and the driving backplane may include a substrate 01 and a driving layer (not shown) disposed on one side of the substrate 01. The substrate 01 may be a single-layer or multi-layer structure, and it may be a hard or flexible structure, which is not specifically limited here. The above-mentioned driving circuit may be located in the driving layer. Taking the transistor in the driving circuit as a top-gate thin-film transistor as an example, the driving layer may include an active layer, a first gate insulating layer, a gate electrode, a second gate insulating layer, an interlayer dielectric layer, a source-drain electrode layer, and a planarization layer, etc., which are sequentially arranged in a direction away from the substrate 01. Of course, the transistor in the driving circuit may also be a bottom-gate thin-film transistor, which may specifically include a first gate electrode layer, a first gate insulating layer, a first active layer, a first source-drain electrode layer, and a planarization layer, etc., which are sequentially arranged in a direction away from the substrate. This structure is not the focus of the present invention, and therefore, it is not described in detail here.

[0069] The light-emitting layer 02 is arranged on one side of the driving backplane, specifically on the side of the driving layer away from the substrate. The light-emitting layer 02 includes a pixel definition layer and a plurality of light-emitting devices separated by the pixel definition layer. The pixel definition layer is provided with openings for exposing the light-emitting devices. Specifically, the pixel definition layer may be provided with a plurality of openings, and the range defined by each opening is the range of a light-emitting device. The shape of the opening, that is, the shape of the outline of the orthographic projection of the opening on the driving backplane may be a polygon, a smooth closed curve or other shapes, which are not specifically limited here.

[0070] The light-emitting device can be connected to each pixel circuit in a one-to-one correspondence, so as to emit light under the drive of the driving circuit. The light-emitting device may include an anode, a light-emitting functional layer and a cathode stacked in sequence in a direction away from the driving backplane. The materials of the anode and the cathode may include one or more of conductive metals, metal oxides and alloys. The light-emitting functional layer is at least partially disposed in the opening, and may include a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer and an electron injection layer stacked in sequence in a direction away from the driving backplane. The holes and electrons can be compounded into excitons in the light-emitting material layer, and the excitons radiate photons, thereby generating visible light. The specific light-emitting principle will not be described in detail here.

[0071] The color of the light emitting device can be the same color. In this case, the color filter layer can be used to achieve color display. Of course, since the light emitting material layers of each light emitting device are independent of each other, different light emitting devices can also directly emit light of different colors.

[0072] Continue as Figures 1 to 3 As shown, the display panel provided by the present disclosure further includes an encapsulation layer 03. The encapsulation layer 03 is disposed on the side of the light-emitting layer 02 away from the driving backplane, and covers the light-emitting layer 02. It can be used to protect the light-emitting layer 02 and prevent external water and oxygen from corroding the light-emitting device.

[0073] In some embodiments of the present disclosure, encapsulation can be achieved by thin-film encapsulation (TFE). Specifically, the encapsulation layer 03 may include a first inorganic layer, an organic layer, and a second inorganic layer, wherein the first inorganic layer covers the surface of the light-emitting layer 02 away from the driving backplane, the organic layer may be arranged on the surface of the first inorganic layer away from the driving backplane, and the boundary of the organic layer is limited to the inner side of the boundary of the first inorganic layer, the second inorganic layer covers the organic layer and the first inorganic layer not covered by the organic layer, and the intrusion of water and oxygen can be blocked by the second inorganic layer, and planarization is achieved by the flexible organic layer.

[0074] In some embodiments of the present disclosure, the display panel further includes a touch layer 04, which is disposed on one side of the substrate 01. Specifically, the touch layer 04 is disposed on the side of the encapsulation layer 03 away from the substrate 01. The touch layer 04 is used to sense the user's touch operation so as to interact with the user through the image displayed by the display panel.

[0075] like Figure 4 and Figure 5 As shown, in some embodiments of the present disclosure, taking mutual capacitance touch as an example, the touch layer 04 may include a first electrode 41 and a second electrode 42. When a touch occurs, the coupling capacitance between the first electrode 41 and the second electrode 42 changes, thereby determining the touch position. The first electrode 41 may be a driving electrode, and the second electrode 42 may be a receiving electrode.

[0076] The first electrode 41 and the second electrode 42 may be disposed in the same layer or in layers.

[0077] like Figure 4 As shown, in one embodiment of the present disclosure, the first electrode 41 and the second electrode 42 are arranged in layers, and the first electrode 41 and the second electrode 42 are cross-distributed in space along a first direction and a second direction perpendicular to each other. The first electrode 41 and the second electrode 42 are insulated from each other. It should be noted that in the area other than the intersection of the first electrode 41 and the second electrode 42, the first electrode 41 and the second electrode 42 can be arranged on the same plane.

[0078] like Figure 5 As shown, in another embodiment of the present disclosure, the first electrode 41 and the second electrode 42 are arranged in the same layer. In this embodiment, the touch layer 04 includes a plurality of first electrodes 41 arranged at intervals and a plurality of second electrodes 42 arranged at intervals, and adjacent first electrodes 41 or adjacent second electrodes 42 are electrically connected through a bridge 43. An insulating layer is arranged between the bridge 43 and the first electrode 41 and the second electrode 42, that is, the first electrode 41 and the second electrode 42 are located on the same side of the insulating layer, and the bridge is located on the other side of the insulating layer.

[0079] like Figures 1 to 3 , Figure 6 As shown, the display panel provided by the present disclosure further includes a first floating electrode layer 08, which is disposed on the side of the touch layer 04 facing away from the substrate 01. The first floating electrode layer 08 and the touch layer 04 are insulated from each other. The first floating electrode layer 08 includes a first floating electrode 81. The orthographic projection of the first floating electrode 81 on the substrate 01 at least partially overlaps with the orthographic projection of the first electrode 41 on the substrate 01. Specifically, the pattern of the first floating electrode 81 can be the same as or similar to that of the first electrode 41.

[0080] The first electrode 41 is a driving electrode, and the driving signal thereon can be coupled to the upper first floating electrode layer 08. When a voltage is applied to the first electrode 41, an electrostatic force is generated between the user's finger and the touch surface of the display panel. When an AC voltage is applied to the first electrode 41, the electrostatic force changes periodically with the driving voltage, so that the friction between the finger and the touch surface changes periodically. When the user slides his finger on the display panel, the friction felt by the finger changes periodically, so that the user can feel the texture tactile feedback.

[0081] Furthermore, the orthographic projection of the first floating electrode 81 on the substrate 01 completely covers the orthographic projection of the first electrode 41 on the substrate 01. In practical applications, when a user touches the display panel with a finger, the electrostatic force between the finger and the touch surface is affected by the voltage across the finger, and the voltage across the finger is coupled to the upper floating electrode through the drive signal of the first electrode 41. The larger the overlapping area of ​​the first floating electrode 81 and the first electrode 41, the larger the signal coupled from the drive signal of the first electrode 41 to the upper first floating electrode 81, that is, the larger the voltage across the finger. Therefore, when the user touches the display panel, the greater the electrostatic force between the finger and the touch surface, the stronger and more sensitive the texture sense experienced by the user.

[0082] like Figures 1 to 3 , Figure 7 The display panel provided by the present disclosure further includes a second floating electrode layer 10, which is disposed on the side of the first floating electrode layer 08 facing away from the substrate 01. The second floating electrode layer 10 and the first floating electrode layer 08 are insulated from each other. The second floating electrode layer 10 includes a second floating electrode 101, and the orthographic projection of the second floating electrode 101 on the substrate 01 at least partially overlaps with the orthographic projection of the first electrode 41 on the substrate 01. Specifically, the pattern of the second floating electrode 101 can be the same as or similar to that of the first electrode 41. Further, the orthographic projection of the second floating electrode 101 on the substrate 01 completely covers the orthographic projection of the first electrode 41 on the substrate 01. The working principles of the second floating electrode layer 10 and the first floating electrode layer 08 are similar, and will not be described in detail here.

[0083] According to the parallel plate capacitance calculation formula C=εS / 4πkd, where ε is the dielectric constant, S is the facing area of ​​the plates, and d is the distance between the plates, the present disclosure sets a first floating electrode layer 08 and a second floating electrode layer 10. Compared with setting a single floating electrode layer in the related art, the present disclosure is conducive to increasing the capacitance between the first floating electrode layer 08 and the touch layer 04, and the capacitance between the first floating electrode layer 08 and the second floating electrode layer 10, thereby increasing the coupling capacitance between the user's finger and the touch layer 04 and improving the tactile feedback effect.

[0084] In addition, compared with the related art in which one floating electrode layer is provided, when the second floating electrode layer 10 is scratched or the first floating electrode layer 08 is bent and broken, the two floating electrode layers provided in the present invention can effectively reduce the loss of coupling capacitance between the user's finger and the touch layer 04, thereby helping to ensure the size of the electrostatic force at the finger tip and ensuring that the user can continue to experience tactile feedback content such as the texture and contour of the display pattern.

[0085] For example, Figure 8As shown, in the related art, when only one floating electrode layer 13 is provided, the capacitance between the floating electrode layer 13 and the touch layer 12 is C0. Assuming that after the floating electrode layer 13 is scratched, the effective area of ​​the electrode touched by the finger becomes 1 / n of the original area, then the capacitance between the floating electrode layer 13 and the touch layer 12 becomes 1 / nC0, then the ratio of the residual capacitance after scratching to the original capacitance is 1 / n, and the ratio of the capacitance loss due to scratching to the original capacitance is n-1 / n.

[0086] like Fig. 9 As shown, in the present disclosure, a first floating electrode layer 08 and a second floating electrode layer 10 are provided. For example, if the capacitance between the first floating electrode layer 08 and the touch layer 04 is C1, and the capacitance between the first floating electrode layer 08 and the second floating electrode layer 10 is C2, then the capacitance C between the second floating electrode layer 10 and the touch layer 04 is C1×C2 / (C1+C2). Assuming that after the second floating electrode layer 10 is scratched, the effective area of ​​the electrode touched by the finger becomes 1 / n of the original area, then the capacitance between the second floating electrode layer 10 and the touch layer 04 is C1×C2 / n(C1+C2 / n), and the ratio of the residual capacitance after scratching to the original capacitance is (C1+C2) / (nC1+C2), which is greater than 1 / n. Therefore, the ratio of the capacitance loss caused by scratching to the original capacitance is less than n-1 / n. From this analysis, it can be seen that the two floating electrode layers provided in the present disclosure can effectively reduce the loss of coupling capacitance between the user's finger and the touch layer 04.

[0087] like Figure 7 As shown, in some embodiments of the present disclosure, the second floating electrode layer 10 further includes a third floating electrode 102 insulated from the second floating electrode 101, the third floating electrode 102 is an island-shaped floating electrode separated from the surrounding floating electrodes, and the orthographic projection of the third floating electrode 102 on the substrate 01 at least partially overlaps with the orthographic projection of the second electrode 42 on the substrate 01. The island-shaped floating electrode is located above the second electrode 42 to assist in the calculation of touch coordinates.

[0088] Furthermore, if Figure 6 As shown, the first floating electrode layer 08 further includes a fourth floating electrode 82 insulated from the first floating electrode 81, the fourth floating electrode 82 is an island-shaped floating electrode separated from the surrounding floating electrodes, and the orthographic projection of the fourth floating electrode 82 on the substrate 01 at least partially overlaps with the orthographic projection of the second electrode 42 on the substrate 01. Similarly, the island-shaped floating electrode is located above the second electrode 42 to assist in the calculation of touch coordinates.

[0089] Preferably, the orthographic projection of the third floating electrode 102 on the substrate 01 at least partially overlaps with the orthographic projection of the fourth floating electrode 82 on the substrate 01 , so as to further implement auxiliary touch coordinate calculation.

[0090] The pattern of the first floating electrode layer 08 may be the same as or similar to the pattern of the second floating electrode layer 10. In some embodiments, the pattern of the first floating electrode layer 08 is the same as the pattern of the second floating electrode layer 10, and the orthographic projections of the first floating electrode layer 08 and the second floating electrode layer 10 on the substrate 01 completely overlap, so as to reduce the difficulty of the manufacturing process while achieving tactile feedback.

[0091] The display panel provided in the present disclosure further includes structures such as a polarizing plate 05 , a cover plate 07 , and an optical adhesive layer 06 . The arrangement of the first floating electrode layer 08 and the second floating electrode layer 10 can be adaptively adjusted according to other structural layers in the display panel.

[0092] like Figure 1 As shown, in one embodiment, the polarizing plate 05 is arranged on the side of the encapsulation layer 03 facing away from the substrate 01, and can be specifically arranged between the touch layer 04 and the encapsulation layer 03, or can be arranged on the side of the touch layer 04 facing away from the substrate 01, so as to meet the anti-reflection requirements of the OLED display panel. The polarizing plate 05 includes a linear polarizer and a quarter-wave plate, wherein the linear polarizer is located in the upper layer, that is, the linear polarizer is closer to the display surface of the display screen. When the external light first passes through the linear polarizer, half of the light cannot pass through. After the half of the light passes through the quarter-wave plate and the cathode reflection, it is deflected from the original light, and the reflected light cannot pass through the linear polarizer, thereby solving the reflection problem of the external light.

[0093] The optical adhesive layer 06 is disposed on the side of the polarizing plate 05 away from the substrate 01. The cover plate 07 is disposed between the touch layer 04 and the first floating electrode layer 08. Specifically, the cover plate 07 is disposed on the side of the optical adhesive layer 06 away from the substrate 01. The optical adhesive layer 06 is used to bond the polarizing plate 05 and the cover plate 07.

[0094] In this embodiment, the first floating electrode layer 08 and the second floating electrode layer 10 are both disposed on the side of the cover plate 07 facing away from the substrate 01. Furthermore, the display panel further includes an insulating layer 09, which is disposed between the first floating electrode layer 08 and the second floating electrode layer 10 and covers the first floating electrode layer 08.

[0095] like Figure 2As shown, in another specific embodiment, the cover plate 07 is disposed between the first floating electrode layer 08 and the second floating electrode layer 10. That is, the first floating electrode layer 08 and the second floating electrode layer 10 are respectively located on both sides of the cover plate 07. In this embodiment, the polarizing plate 05 is disposed between the touch layer 04 and the first floating electrode layer 08, and the optical adhesive layer 06 is disposed between the polarizing plate 05 and the first floating electrode layer 08. That is, the polarizing plate 05 is disposed on the side of the touch layer 04 facing away from the substrate 01, the optical adhesive layer 06 is disposed on the side of the polarizing plate 05 facing away from the substrate 01, the first floating electrode layer 08 is disposed on the side of the optical adhesive layer 06 facing away from the substrate 01, the cover plate 07 is disposed on the side of the first floating electrode layer 08 facing away from the substrate 01, and the second floating electrode layer 10 is disposed on the side of the cover plate 07 facing away from the substrate 01.

[0096] like Figure 3 As shown, in another specific embodiment, the cover plate 07 is disposed between the first floating electrode layer 08 and the second floating electrode layer 10. That is, the first floating electrode layer 08 and the second floating electrode layer 10 are respectively located on both sides of the cover plate 07. In this embodiment, the display panel further includes an insulating layer 09. The polarizing plate 05 is disposed on the side of the first floating electrode layer 08 away from the substrate 01 and is located between the first floating electrode layer 08 and the cover plate 07; the insulating layer 09 is disposed between the touch layer 04 and the first floating electrode layer 08 and covers the touch layer 04; and the optical adhesive layer 06 is disposed between the polarizing plate 05 and the cover plate 07. That is, the insulating layer 09 is disposed on the side of the touch layer 04 facing away from the substrate 01 and covers the touch layer 04, the first floating electrode layer 08 is disposed on the side of the insulating layer 09 facing away from the substrate 01, the polarizing plate 05 is disposed on the side of the first floating electrode layer 08 facing away from the substrate 01, the optical adhesive layer 06 is disposed on the side of the polarizing plate 05 facing away from the substrate 01, the cover plate 07 is disposed on the side of the optical adhesive layer 06 facing away from the substrate 01, and the second floating electrode layer 10 is disposed on the side of the cover plate 07 facing away from the substrate 01.

[0097] In the present disclosure, the electrode material may be a conductive material such as ITO (indium tin oxide), IZO (transparent conductive binary oxide), nanosilver, metal mesh, conductive polymer, conductive composite material, etc. Further, the first electrode 41, the second electrode 42, the first floating electrode 81, the second floating electrode 101, the third floating electrode 102 and the fourth floating electrode 82 are made of a transparent conductive material such as ITO or IZO.

[0098] like Fig.10 As shown, the present disclosure also provides a method for manufacturing a display panel, comprising:

[0099] Step S100, providing a substrate 01;

[0100] Step S200, forming a touch layer 04, the touch layer 04 is formed on one side of the substrate 01, the touch layer 04 includes a first electrode 41 and a second electrode 42, the first electrode 41 and the second electrode 42 are insulated from each other;

[0101] Step S300, forming a first floating electrode layer 08, wherein the first floating electrode layer 08 is formed on a side of the touch layer 04 facing away from the substrate 01, the first floating electrode layer 08 and the touch layer 04 are insulated from each other, and the first floating electrode layer 08 includes a first floating electrode 81, and an orthographic projection of the first floating electrode 81 on the substrate 01 at least partially overlaps with an orthographic projection of the first electrode 41 on the substrate 01;

[0102] Step S400, forming a second floating electrode layer 10, the second floating electrode layer 10 is formed on a side of the first floating electrode layer 08 facing away from the substrate 01, the second floating electrode layer 10 and the first floating electrode layer 08 are insulated from each other, the second floating electrode layer 10 includes a second floating electrode 101, and the orthographic projection of the second floating electrode 101 on the substrate 01 at least partially overlaps with the orthographic projection of the first electrode 41 on the substrate 01;

[0103] Step S500 : forming a protection layer 11 . The protection layer 11 is formed on a side of the second floating electrode layer 10 facing away from the substrate 01 and covers the second floating electrode layer 10 .

[0104] In an embodiment of the present disclosure, before step S300, the following steps are further included:

[0105] Step S201, forming a cover plate 07 on the side of the touch layer 04 facing away from the substrate 01. In this embodiment, in the display panel formed, the first floating electrode layer 08 and the second floating electrode layer 10 are located on the same side of the cover plate 07, which can be formed as follows: Figure 1 In this structural design, the distance between the first floating electrode layer 08 and the second floating electrode layer 10 and the user's fingers is closer, which helps to improve the tactile feedback effect to a certain extent.

[0106] In another embodiment of the present disclosure, before step S400, the method further includes:

[0107] Step S301, forming a cover plate 07 on the side of the first floating electrode layer 08 facing away from the substrate 01. In this embodiment, in the display panel formed, the first floating electrode layer 08 and the second floating electrode layer 10 are located on opposite sides of the cover plate 07, which can be formed as follows: Figure 2 and Figure 3 This structural design not only ensures the tactile feedback effect, but also enhances the protection effect of the floating electrode layer, further ensuring the technical effect of reducing the capacitance loss.

[0108] The present disclosure also provides a display device, including a display panel, which can be a display panel of any of the above embodiments, and its specific structure and beneficial effects can refer to the embodiments of the display panel above, which will not be repeated here. The display device of the present disclosure can be an electronic device such as a mobile phone, a tablet computer, a television, etc., which will not be listed one by one here.

[0109] It should be noted that, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in the specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc., which shall all be considered as part of the present disclosure.

[0110] It should be understood that the present disclosure does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The present disclosure can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present disclosure. It should be understood that the present disclosure disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the present disclosure. The embodiments of this specification illustrate the best mode known for implementing the present disclosure and will enable those skilled in the art to utilize the present disclosure.

Claims

1. A display panel, characterized in that: include: substrate; A touch layer, disposed on one side of the substrate, the touch layer comprising a first electrode and a second electrode, the first electrode and the second electrode being insulated from each other; a first floating electrode layer, disposed on a side of the touch layer away from the substrate, the first floating electrode layer and the touch layer being insulated from each other, the first floating electrode layer comprising a first floating electrode, an orthographic projection of the first floating electrode on the substrate completely covering an orthographic projection of the first electrode on the substrate; a second floating electrode layer, arranged on a side of the first floating electrode layer away from the substrate, the second floating electrode layer and the first floating electrode layer being insulated from each other, the second floating electrode layer comprising a second floating electrode and a third floating electrode insulated from the second floating electrode, the third floating electrode being an island-shaped floating electrode separated from surrounding floating electrodes; an orthographic projection of the second floating electrode on the substrate completely covers an orthographic projection of the first electrode on the substrate, and an orthographic projection of the third floating electrode on the substrate at least partially overlaps with an orthographic projection of the second electrode on the substrate; The protection layer is disposed on a side of the second floating electrode layer facing away from the substrate and covers the second floating electrode layer.

2. The display panel according to claim 1, characterized in that: The first floating electrode layer further includes a fourth floating electrode insulated from the first floating electrode. The fourth floating electrode is an island-shaped floating electrode separated from surrounding floating electrodes. The orthographic projection of the fourth floating electrode on the substrate at least partially overlaps with the orthographic projection of the second electrode on the substrate.

3. The display panel according to claim 2, characterized in that: An orthographic projection of the third floating electrode on the substrate at least partially overlaps with an orthographic projection of the fourth floating electrode on the substrate.

4. The display panel according to claim 1, characterized in that: Orthographic projections of the first floating electrode layer and the second floating electrode layer on the substrate completely overlap.

5. The display panel according to claim 1, characterized in that: The display panel further includes: A cover plate, disposed between the touch layer and the first floating electrode layer; The insulating layer is disposed between the first floating electrode layer and the second floating electrode layer and covers the first floating electrode layer.

6. The display panel according to claim 1, characterized in that: The display panel further includes: The cover plate is disposed between the first floating electrode layer and the second floating electrode layer.

7. The display panel according to claim 6, characterized in that: The display panel further includes: A polarizing plate, disposed between the touch layer and the first floating electrode layer; The optical adhesive layer is disposed between the polarizing plate and the first floating electrode layer.

8. The display panel according to claim 6, characterized in that: The display panel further includes: A polarizing plate, disposed between the first floating electrode layer and the cover plate; an insulating layer, disposed between the touch layer and the first floating electrode layer, and covering the touch layer; The optical adhesive layer is arranged between the polarizing plate and the cover plate.

9. The display panel according to claim 2, characterized in that: The first electrode, the second electrode, the first floating electrode, the second floating electrode, the third floating electrode, and the fourth floating electrode are made of a transparent conductive material.

10. A method for manufacturing a display panel, characterized in that: include: providing a substrate; forming a touch layer, wherein the touch layer is formed on one side of the substrate, the touch layer comprises a first electrode and a second electrode, and the first electrode and the second electrode are insulated from each other; forming a first floating electrode layer, wherein the first floating electrode layer is formed on a side of the touch layer away from the substrate, the first floating electrode layer and the touch layer are insulated from each other, the first floating electrode layer comprises a first floating electrode, and an orthographic projection of the first floating electrode on the substrate at least partially overlaps with an orthographic projection of the first electrode on the substrate; forming a second floating electrode layer, wherein the second floating electrode layer is formed on a side of the first floating electrode layer away from the substrate, the second floating electrode layer and the first floating electrode layer are insulated from each other, the second floating electrode layer comprises a second floating electrode, and an orthographic projection of the second floating electrode on the substrate at least partially overlaps with an orthographic projection of the first electrode on the substrate; forming a protection layer, wherein the protection layer is formed on a side of the second floating electrode layer facing away from the substrate and covers the second floating electrode layer; The orthographic projection of the first floating electrode on the substrate completely covers the orthographic projection of the first electrode on the substrate, and the orthographic projection of the second floating electrode on the substrate completely covers the orthographic projection of the first electrode on the substrate; The second floating electrode layer further includes a third floating electrode insulated from the second floating electrode. The third floating electrode is an island-shaped floating electrode separated from surrounding floating electrodes. The orthographic projection of the third floating electrode on the substrate at least partially overlaps with the orthographic projection of the second electrode on the substrate.

11. The method for manufacturing a display panel according to claim 10, characterized in that: Before forming the first floating electrode layer, the method further includes: A cover plate is formed on a side of the touch layer away from the substrate.

12. The method for manufacturing a display panel according to claim 10, characterized in that: Before forming the second floating electrode layer, the method further includes: A cover plate is formed on a side of the first floating electrode layer away from the substrate.

13. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 9.

Images