Touch panel, touch panel driving method and display device

Abstract

The invention discloses a touch panel, a touch panel driving method and a display device, and the touch panel comprises a substrate; the conductive structure layer is arranged on one side of the substrate, the conductive structure layer comprises a plurality of conductive electrode blocks, and at least part of the conductive electrode blocks are configured to be used as pressure-sensitive electrode blocks and suspension touch electrode blocks in a time-sharing mode; the pressure-sensitive layer is adjacent to at least part of the conductive structure layer in the direction perpendicular to the plane where the substrate is located. According to the embodiment of the invention, a pressure-sensitive touch function and a suspension touch function are integrated, and the conductive electrode blocks are configured to be used as pressure-sensitive electrode blocks and suspension touch electrode blocks in a time-sharing manner and do not need to be arranged on different film layers respectively, so that the thickness of the touch panel is effectively reduced, the number of required masks is reduced, the technological process is simplified, and the manufacturing cost is reduced; and the use performance of the touch panel is improved.

Description

Technical Field

[0001] The present application belongs to the field of touch technology, and in particular, relates to a touch panel, a touch panel driving method and a display device. Background Art

[0002] Touch panels have become the main means of human-computer interaction for personal mobile communication devices and integrated information terminals such as tablet computers, smart phones, and super notebook computers due to their advantages such as ease of operation, intuitiveness, and flexibility.

[0003] Due to the structural limitations of existing touch panels, the performance of touch panels cannot meet the requirements.

[0004] Therefore, a new touch panel, a touch panel driving method and a display device are urgently needed. Summary of the invention

[0005] The embodiments of the present application provide a touch panel, a touch panel driving method and a display device. The embodiments of the present application integrate a pressure-sensitive touch function and a floating touch function. The conductive electrode blocks are configured to be used as pressure-sensitive electrode blocks and floating touch electrode blocks in a time-sharing manner. There is no need to set them in different film layers respectively, which effectively reduces the thickness of the touch panel, saves the number of required mask plates, simplifies the process flow, reduces the production cost, and improves the performance of the touch panel.

[0006] On the one hand, an embodiment of the present application provides a touch panel, including: a substrate; a conductive structure layer, arranged on one side of the substrate, the conductive structure layer including a plurality of conductive electrode blocks, at least some of the conductive electrode blocks being configured to be used as pressure-sensing electrode blocks and suspended touch electrode blocks in a time-sharing manner; a pressure-sensitive layer, arranged adjacent to at least some of the conductive structure layer in a direction perpendicular to the plane where the substrate is located.

[0007] According to one aspect of the present application, the conductive structure layer includes a first electrode block and a second electrode block that are insulated from each other, the first electrode block is arranged along a first direction, the second electrode block is arranged along a second direction, and the first direction and the second direction intersect; the pressure sensing electrode block includes a first pressure sensing electrode block and a second pressure sensing electrode block, and the floating touch electrode block includes a first floating touch electrode block and a second floating touch electrode block; in a pressure sensing state, the first electrode block is used as the first pressure sensing electrode block, and the second electrode block is used as the second pressure sensing electrode block; in a floating touch state, the first electrode block is used as the first floating touch electrode block, and the second electrode block is used as the second floating touch electrode block; preferably, the first electrode block and the second electrode block are arranged in the same layer; or, the first electrode block and the second electrode block are arranged in different layers; preferably, along the first direction, the first electrode blocks located in the same row are electrically connected, and along the second direction, the second electrode blocks located in the same column are electrically connected.

[0008] According to one aspect of the present application, the conductive structure layer includes a first electrode block and a second electrode block that are insulated from each other, the first electrode blocks are arranged along a first direction, the second electrode blocks are arranged along a second direction, the first direction and the second direction intersect, and along the first direction, the first electrode blocks located in the same row are electrically connected, and the second electrode blocks are insulated from each other; the pressure-sensing electrode block includes a first pressure-sensing electrode block and a second pressure-sensing electrode block; in a pressure-sensing state, the first electrode block is used as the first pressure-sensing electrode block, and the second electrode block is used as the second pressure-sensing electrode block; in a floating touch state, the second electrode block is used as the floating touch electrode block; preferably, the first electrode block and the second electrode block are arranged in the same layer; or, the first electrode block and the second electrode block are arranged in different layers; preferably, in the floating touch state, the first electrode block is not energized or is connected to a constant voltage.

[0009] According to one aspect of the present application, it also includes a pressure-sensing control chip, a floating touch chip, a first signal line and a second signal line; the conductive electrode block is electrically connected to the pressure-sensing control chip through the first signal line, and the conductive electrode block is electrically connected to the floating touch chip through the second signal line; along the second direction, the pressure-sensing control chip and the floating touch chip are located on the same side or different sides of the conductive structure layer; preferably, the first signal line includes a first sub-signal line and a second sub-signal line, the first sub-signal line is electrically connected to the first electrode block, and the second sub-signal line is electrically connected to the second electrode block; preferably, the second signal line includes a third sub-signal line and a fourth sub-signal line, the third sub-signal line is electrically connected to the first electrode block, and the fourth sub-signal line is electrically connected to the second electrode block.

[0010] According to one aspect of the present application, it also includes a plurality of multiplexers, each of the multiplexers is respectively connected to the second electrode blocks located in the same column along the second direction; preferably, the multiplexer includes a first multiplexing unit and a second multiplexing unit, the first multiplexing unit is electrically connected to the pressure sensing control chip, and the second multiplexing unit is electrically connected to the floating touch chip; preferably, the first sub-signal line is electrically connected to the first multiplexing unit; preferably, the second signal line is electrically connected to the second multiplexing unit.

[0011] According to one aspect of the present application, it also includes a composite chip, a third signal line and a fourth signal line, the first electrode block is electrically connected to the composite chip through the third signal line, and the second electrode block is electrically connected to the composite chip through the fourth signal line.

[0012] According to one aspect of the present application, the conductive structure layer includes at least two conductive layers, the conductive electrode blocks are located in the same conductive layer, or, at least part of the conductive electrode blocks are located in different conductive layers; preferably, along the direction away from the plane where the substrate is located, the conductive structure layer includes a first conductive layer, a first insulating layer, a second conductive layer and a second insulating layer that are stacked; preferably, the pressure-sensitive layer is arranged between the first insulating layer and the second conductive layer, or, the pressure-sensitive layer is arranged between the second conductive layer and the second insulating layer.

[0013] On the other hand, an embodiment of the present application provides a touch panel driving method, which is used for the touch panel in any of the above embodiments, including: detecting a first electrical parameter change of a conductive electrode block in a conductive structure layer by a suspended touch chip, if the first electrical parameter change is greater than a first preset value, entering a suspended touch state, and the conductive electrode block is configured as a suspended touch electrode block; if the first electrical parameter change is less than or equal to the first preset value, entering a pressure sensing state, and the conductive electrode block is configured as a pressure sensing electrode block.

[0014] According to another aspect of the present application, in the pressure sensing state, the second electrical parameter change of the pressure sensing electrode block is detected by the pressure sensing control chip. If the second electrical parameter change is greater than a second preset value, the pressure sensing detection continues; if not, the floating touch state is entered.

[0015] Another aspect of the embodiments of the present application provides a display device, comprising the touch panel in any of the above embodiments.

[0016] Compared with the prior art, the touch panel provided by the embodiment of the present invention includes a substrate, a conductive structure layer and a pressure-sensitive layer. At least part of the conductive electrode blocks in the conductive structure layer can be used as pressure-sensing electrode blocks and suspended touch electrode blocks in a time-sharing manner. In the pressure-sensing state, the conductive electrode blocks used as pressure-sensing electrode blocks can be used to identify the position where pressure is applied, and the pressure-sensitive layer can be used to detect the size of the applied pressure, so as to realize pressure-sensing detection together. In the suspended touch state, the conductive electrode blocks serve as suspended touch electrode blocks, allowing the user's fingers to keep a certain distance from the touch panel, and the operation can be completed without touching the screen. The embodiment of the present application integrates the pressure-sensing touch function and the suspended touch function, and the conductive electrode blocks are configured to be used as pressure-sensing electrode blocks and suspended touch electrode blocks in a time-sharing manner. There is no need to set them in different film layers respectively, which effectively reduces the thickness of the touch panel, saves the number of required mask plates, simplifies the process flow and reduces the production cost, and improves the performance of the touch panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic structural diagram of a touch panel provided by an embodiment of the present invention;

[0019] Figure 2 An embodiment provides Figure 1 A schematic diagram of the enlarged structure of the middle area A;

[0020] Figure 3 is a film layer structure diagram of a touch panel provided by an embodiment of the present invention;

[0021] Figure 4 An embodiment provides Figure 1 A schematic diagram of the enlarged structure of the middle area A;

[0022] Figure 5 Another embodiment provides Figure 1 A schematic diagram of the enlarged structure of the middle area A;

[0023] Figure 6 Yet another embodiment provides Figure 1 A schematic diagram of the enlarged structure of the middle area A;

[0024] Figure 7 is a film layer structure diagram of a touch panel provided by another embodiment of the present invention;

[0025] Figure 8 The figure is a flow chart of a touch panel driving method provided by an embodiment of the present invention.

[0026] In the attached figure:

[0027] 1-Substrate;

[0028] 20-conductive structure layer; 2-conductive electrode block; 21-first electrode block; 22-second electrode block;

[0029] 3-pressure-sensitive layer; 4-first insulating layer; 5-second insulating layer; 6-array layer;

[0030] 7-light-emitting functional layer; 71-first electrode layer; 72-light-emitting layer; 73-second electrode layer;

[0031] 8-Suspended touch chip; 9-Pressure control chip;

[0032] C1-first conductive layer; C2-second conductive layer; H-composite chip; M-multiplexer; M1-first multiplexing unit; M2-second multiplexing unit; F-packaging layer; L1-first signal line; L11-first sub-signal line; L12-second sub-signal line; L2-second signal line; L21-third sub-signal line; L22-fourth sub-signal line; L3-third signal line; L4-fourth signal line; N-connecting line; Z-active layer; G-gate; S-source; D-drain; X-first direction; Y-second direction. DETAILED DESCRIPTION

[0033] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0035] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0036] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0037] The present application provides a touch panel, a touch panel driving method and a display device. Figures 1 to 8 Various embodiments of a touch panel, a touch panel driving method, and a display device are described.

[0038] See also Figures 1 to 3 The present application provides a touch panel, comprising: a substrate 1; a conductive structure layer 20, arranged on one side of the substrate 1, the conductive structure layer 20 comprising a plurality of conductive electrode blocks 2, at least some of the conductive electrode blocks 2 being configured to be used as pressure sensing electrode blocks and suspended touch electrode blocks in a time-sharing manner; a pressure-sensitive layer 3, arranged adjacent to at least some of the conductive structure layer 20 in a direction perpendicular to the plane where the substrate 1 is located.

[0039] The touch panel provided by the embodiment of the present invention includes a substrate 1, a conductive structure layer 20 and a pressure-sensitive layer 3. At least part of the conductive electrode blocks 2 in the conductive structure layer 20 can be used as pressure-sensing electrode blocks and suspended touch electrode blocks in a time-sharing manner. In the pressure-sensing state, the conductive electrode blocks 2 as pressure-sensing electrode blocks can be used to identify the position where pressure is applied, and the pressure-sensitive layer 3 can be used to detect the size of the applied pressure, so as to realize pressure-sensing detection together. In the suspended touch state, the conductive electrode blocks 2 act as suspended touch electrode blocks, allowing the user's fingers to keep a certain distance from the touch panel, and the operation can be completed without touching the screen. The embodiment of the present application integrates the pressure-sensing touch function and the suspended touch function, and the conductive electrode blocks 2 are configured to be used as pressure-sensing electrode blocks and suspended touch electrode blocks in a time-sharing manner. There is no need to set them in different film layers respectively, which effectively reduces the thickness of the touch panel, saves the number of required mask plates, simplifies the process flow and reduces the production cost, and improves the performance of the touch panel.

[0040] It should be noted that the touch panel provided in this embodiment includes a floating touch state and a pressure sensing state, and the corresponding pressure sensing electrode blocks and floating touch electrode blocks communicate with each other and work in time sharing; when in the floating touch state, the conductive electrode block 2 is not configured as a pressure sensing electrode block, that is, the conductive electrode block 2 does not receive a pressure sensing signal, and the touch panel performs a floating touch function; when in the pressure sensing state, the conductive electrode block 2 is not configured as a floating touch electrode block, that is, the conductive electrode block 2 does not receive a floating touch signal, and the touch panel realizes a pressure sensing function.

[0041] The substrate 1 may be a hard substrate, such as a glass substrate, or a flexible substrate, and its material may be polyimide, polystyrene, polyethylene terephthalate, polyparaxylene, polyethersulfone or polyethylene naphthalate. The substrate 1 is mainly used to support the device disposed thereon.

[0042] The conductive structure layer 20 can be made of low-resistance metal materials, such as copper (Cu), aluminum (Al), molybdenum (Mo), titanium (Ti), silver (Ag), gold (Au), nickel (Ni), chromium (Cr), iron (Fe), indium (In) and gallium (Ga), or alloy materials, such as Ti / Al / Ti, ITO / Ag / ITO (Indium Tin Oxide), CuNi, MoAlMo and other materials.

[0043] Optionally, when the pressure-sensitive layer 3 is applied to a display device, it can be a transparent pressure-sensitive material, including metal nanoparticle / organic elastomer composite materials, carbon nanoparticle / organic elastomer composite materials, etc.; when applied to non-display fields, it can be a non-transparent material, such as carbon-based nanomaterials, etc.

[0044] See also Figure 3 Optionally, an array layer 6, a light-emitting functional layer 7 and a packaging layer F are stacked between the substrate 1 and the conductive structure layer 20.

[0045] The array layer 6 may include a driving circuit. Exemplarily, the driving circuit provided in the array layer 6 includes a transistor T and a storage capacitor. The transistor T includes an active layer Z, a gate G, a source S and a drain D. The material of the source S and the gate G may include a combination of one or more of molybdenum, titanium, aluminum, copper, etc. The gate G of the transistor T is usually used to receive a control signal so that the transistor T is turned on or off under the control of the control signal. One of the source S and the drain D of the thin film transistor is connected to the light-emitting functional layer 7 to control the normal light emission of the light-emitting functional layer 7.

[0046] Optionally, the light-emitting functional layer 7 includes a first electrode layer 71 , a light-emitting layer 72 and a second electrode layer 73 which are stacked in a direction away from the substrate 1 .

[0047] Optionally, the encapsulation layer F is used to encapsulate and protect the light-emitting layer 72, and the encapsulation layer F includes a first encapsulation layer, and the material of the first encapsulation layer includes an inorganic material. The inorganic material can be specifically made of silicon nitride, silicon oxide, silicon oxynitride and other materials, and can be specifically formed by a CVD (Chemical Vapor Deposition) process.

[0048] Optionally, the encapsulation layer F further comprises a second encapsulation layer located on the side of the first encapsulation layer away from the substrate 1, and the material of the second encapsulation layer comprises an organic material. The organic material can be made of resin or polymer organic material, and can be formed by IJP (Inkjet printing) process.

[0049] Optionally, the encapsulation layer F also includes a third encapsulation layer located on the side of the second encapsulation layer away from the substrate 1, and the material of the third encapsulation layer includes an inorganic material. Continuing to add an inorganic encapsulation layer outside the organic encapsulation layer can further improve the encapsulation effect of the encapsulation layer; in this embodiment, the material of the third encapsulation layer can be the same as or different from the material of the first encapsulation layer, and there is no special limitation.

[0050] Optionally, the material of the first encapsulation layer is the same as the material of the third encapsulation layer, so that the first encapsulation layer and the third encapsulation layer can be prepared using the same equipment, which can simplify the preparation process of the display panel.

[0051] Optionally, the touch panel may further include a film layer such as a polarizer and a cover plate disposed on the side of the conductive structure layer 20 facing away from the substrate 1 .

[0052] See also Figure 2 In some optional embodiments, the conductive structure layer 20 includes a first electrode block 21 and a second electrode block 22 which are insulated from each other, the first electrode block 21 is arranged along a first direction X, the second electrode block 22 is arranged along a second direction Y, and the first direction X and the second direction Y intersect; the pressure sensing electrode block includes a first pressure sensing electrode block and a second pressure sensing electrode block, and the suspended touch electrode block includes a first suspended touch electrode block and a second suspended touch electrode block; in the pressure sensing state, the first electrode block 21 is used as a first pressure sensing electrode block, and the second electrode block 22 is used as a second pressure sensing electrode block; in the suspended touch state, the first electrode block 21 is used as a first suspended touch electrode block, and the second electrode block 22 is used as a second suspended touch electrode block.

[0053] In this embodiment, the conductive structure layer 20 adopts a mutual capacitance structure, that is, one of the first electrode block 21 and the second electrode block 22 is a driving electrode, and the other is a sensing electrode. Corresponding to the pressure-sensing state, the first electrode block 21 is used as the first pressure-sensing electrode block, and the second electrode block 22 is used as the first pressure-sensing electrode block, that is, in the pressure-sensing state, the first pressure-sensing electrode block and the second pressure-sensing electrode block can adopt a mutual capacitance form to realize pressure-sensing touch recognition. Similarly, in the floating touch state, the first electrode block 21 is used as the first floating touch electrode block, and the second electrode block 22 is used as the second floating touch electrode block, that is, one of the first floating touch electrode block and the second floating touch electrode block is a driving electrode, and the other is a sensing electrode, so as to realize floating touch recognition in the form of mutual capacitance.

[0054] In this embodiment, the first electrode block 21 and the second electrode block 22 are time-division multiplexed into the first pressure-sensing electrode block, the second pressure-sensing electrode block, the first floating touch electrode block, and the second floating touch electrode block. The floating touch recognition and the pressure-sensing touch recognition do not interfere with each other, thereby effectively improving the integration of the touch panel.

[0055] Optionally, the first electrode block 21 and the second electrode block 22 are arranged in the same layer to further reduce the number of film layers of the touch panel and reduce the thickness of the touch panel.

[0056] Alternatively, the first electrode block 21 and the second electrode block 22 can be arranged in different layers, that is, the conductive structure layer 20 can include two conductive layers, and the first electrode block 21 and the second electrode block 22 are respectively arranged in different conductive layers, so that the first electrode block 21 and the second electrode block 22 can be electrically connected to different signals respectively, thereby increasing the routing space and facilitating routing.

[0057] See also Figure 2 In some optional embodiments, along the first direction X, the first electrode blocks 21 located in the same row are electrically connected, and along the second direction Y, the second electrode blocks 22 located in the same column are electrically connected.

[0058] It can be understood that along the first direction X, the first electrode blocks 21 located in the same row form an electrically connected whole, which is convenient for uniformly receiving signals. Similarly, along the second direction Y, the second electrode blocks 22 located in the same column form an electrically connected whole, which is convenient for uniformly receiving signals. Along the second direction Y, multiple rows of first electrode blocks 21 can be provided, and along the first direction X, multiple columns of second electrode blocks 22 can be provided.

[0059] See also Figure 4 In some optional embodiments, the conductive structure layer 20 includes a first electrode block 21 and a second electrode block 22 that are insulated from each other. The first electrode blocks 21 are arranged along a first direction X, and the second electrode blocks 22 are arranged along a second direction Y. The first direction X and the second direction Y intersect. Along the first direction X, the first electrode blocks 21 located in the same row are electrically connected, and the second electrode blocks 22 are insulated from each other. The pressure sensing electrode block includes a first pressure sensing electrode block and a second pressure sensing electrode block. In the pressure sensing state, the first electrode block 21 is used as a first pressure sensing electrode block, and the second electrode block 22 is used as a second pressure sensing electrode block. In the floating touch state, the second electrode block 22 is used as a floating touch electrode block.

[0060] In this embodiment, in the pressure sensing state, the mutual capacitance structure can still be adopted, that is, the pressure sensing electrode block is divided into a first pressure sensing electrode block and a second pressure sensing electrode block, the first electrode block 21 is used as the first pressure sensing electrode block, and the second electrode block 22 is used as the second pressure sensing electrode block. In the floating touch state, the second electrode blocks 22 that are insulated from each other can be used as floating touch electrode blocks, that is, the floating touch electrode block adopts a self-capacitance form to realize floating touch.

[0061] Optionally, in the floating touch state, the first electrode block 21 is not powered or is connected to a constant voltage setting, that is, only the second electrode block 22 is connected to a signal, so as to realize self-capacitive floating touch.

[0062] The inventors have found through research that when the self-capacitance form is adopted, the capacitance change generated by the suspended touch electrode block is larger, which can better ensure the sensitivity and accuracy of the suspended touch.

[0063] It should be noted that, in order to facilitate control and reduce the number of required wirings, the mutually insulated second electrode blocks 22 can be connected through a multiplexer M, so that in the pressure-sensing state, the second electrode blocks 22 located in the same column can receive the same signal, and in the floating touch state, they can receive different signals respectively.

[0064] Of course, according to actual needs, the pressure sensing electrode block can be made to adopt a self-capacitance form, that is, the second electrode block 22 can be used as a pressure sensing electrode block, and in the suspended touch state, the first electrode block 21 is used as a first suspended touch electrode block, and the second electrode block 22 is used as a second suspended touch electrode block, that is, one of the first suspended touch electrode block and the second suspended touch electrode block is a driving electrode, and the other is a sensing electrode, so as to realize suspended touch recognition in the form of mutual capacitance.

[0065] Optionally, the first electrode block 21 and the second electrode block 22 are arranged in the same layer; or, the first electrode block 21 and the second electrode block 22 are arranged in different layers.

[0066] See also Figure 2 or Figure 4 In some optional embodiments, the touch panel also includes a pressure sensing control chip 9, a suspended touch chip 8, a first signal line L1 and a second signal line L2; the conductive electrode block 2 is electrically connected to the pressure sensing control chip 9 through the first signal line L1, and the conductive electrode block 2 is electrically connected to the suspended touch chip 8 through the second signal line L2; along the second direction Y, the pressure sensing control chip 9 and the suspended touch chip 8 are located on the same side or different sides of the conductive structure layer 20.

[0067] In this embodiment, since the pressure sensing control chip 9 and the floating touch chip 8 work in time sharing and do not interfere with each other, it is necessary to respectively set a first signal line L1 and a second signal line L2 to connect the pressure sensing control chip 9 and the floating touch chip 8 to the conductive electrode block 2 respectively.

[0068] Optionally, the first signal line L1 may include a first sub-signal line L11 and a second sub-signal line L12, wherein the first sub-signal line L11 is electrically connected to the first electrode block 21, and the second sub-signal line L12 is electrically connected to the second electrode block 22, so as to realize pressure-sensitive touch detection through mutual capacitance electrode form.

[0069] Similarly, the second signal line L2 can include a third sub-signal line L21 and a fourth sub-signal line L22, the third sub-signal line L21 is electrically connected to the first electrode block 21, and the fourth sub-signal line L22 is electrically connected to the second electrode block 22, so as to realize floating touch detection through mutual capacitance electrode form.

[0070] Optionally, the first sub-signal line L11 and the third sub-signal line L21 can be electrically connected to the first electrode blocks 21 located at opposite ends along the first direction X, respectively, and the second sub-signal line L12 and the fourth sub-signal line L22 can be electrically connected to the second electrode blocks 22 located at opposite ends along the second direction Y, respectively, so as to avoid excessive concentration of the sub-signal lines and facilitate routing.

[0071] See also Figure 4 or Figure 6 In some optional embodiments, the touch panel further includes a plurality of multiplexers M, each of which is connected to the second electrode blocks 22 located in the same column along the second direction Y.

[0072] It should be noted that the second electrode blocks 22 located in the same column can be electrically connected to the same multiplexer M through the second signal line L2, respectively. The multiplexer M includes a control switch, which can be used to connect the second electrode blocks 22 located in the same column into an electrically connected whole, or to insulate the second electrode blocks 22 from each other.

[0073] For example, see Figure 6 When the pressure-sensitive touch adopts the electrode form of mutual capacitance and the floating touch adopts the electrode form of self capacitance, in the pressure-sensitive state, the second electrode blocks 22 located in the same column can be connected into an electrically connected whole through the multiplexer M, so that the second electrode blocks 22 can be used as the second pressure-sensitive electrode blocks. In the floating touch state, the second electrode blocks 22 located in the same column need to be kept insulated from each other through the multiplexer M, so that the second electrode blocks 22 can be used as the floating touch electrode blocks in the self-capacitance form.

[0074] Optionally, the touch panel further includes a connection line N connecting adjacent second electrode blocks 22 along the second direction Y. The connection line N can be controlled to be conductive by the multiplexer M, thereby controlling the second electrode blocks 22 in the same column to be electrically connected or insulated from each other.

[0075] Optional, see Figure 4 The multiplexer M includes a first multiplexing unit M1 and a second multiplexing unit M2. The first multiplexing unit M1 is electrically connected to the pressure sensing control chip 9, and the second multiplexing unit M2 is electrically connected to the suspension touch chip 8.

[0076] In this embodiment, along the second direction Y, the second electrode blocks 22 located in the same column can be connected to the same first multiplexing unit M1. The first multiplexing unit M1 can control the second electrode blocks 22 located in the same column to be connected as an electrically connected whole or to be insulated from each other, and the second multiplexing unit M2 can be electrically connected to each second electrode block 22 located in the same column through different second signal lines L2, so as to send voltage signals to each second electrode block 22 respectively, thereby realizing self-capacitive floating touch.

[0077] See also Figure 5 or Figure 6 In some optional embodiments, the touch panel further includes a composite chip H, a third signal line L3 and a fourth signal line L4, the first electrode block 21 is electrically connected to the composite chip H through the third signal line L3, and the second electrode block 22 is electrically connected to the composite chip H through the fourth signal line L4.

[0078] In this embodiment, the composite chip H can realize the transmission and reception of pressure sensing signals as well as the transmission and reception of floating touch signals, that is, the composite chip H integrates the functions of the pressure sensing control chip 9 and the floating touch chip 8, further improving the integration of the touch panel.

[0079] Optionally, along the first direction X, among the first electrode blocks 21 located in the same row, two first electrode blocks 21 located at opposite ends can be electrically connected to the composite chip H through a third signal line L3, that is, third signal lines L3 are respectively provided on two opposite sides of the conductive structure layer 20 along the first direction X, and voltage signals can be sent to the first electrode blocks 21 at the same time through the third signal lines L3 on both sides, thereby improving the signal transmission speed and improving the problem of slow signal reception caused by the large length of the third signal line L3.

[0080] See also Figure 3 or Figure 7 In some optional embodiments, the conductive structure layer 20 includes at least two conductive layers, and the conductive electrode blocks 2 are located in the same conductive layer, or at least part of the conductive electrode blocks 2 are located in different conductive layers.

[0081] In this embodiment, the first electrode block 21 and the second electrode block 22 can be located in the same conductive layer for easy preparation, or they can be located in different conductive layers. The first signal line L1 and the second signal line L2 can be located in different conductive layers from the first electrode block 21 and the second electrode block 22 for easy routing.

[0082] Optionally, an insulating layer is provided between adjacent conductive layers to achieve insulation, and the first signal line L1 and the second signal line L2 may be connected to the first electrode block 21 or the second electrode block 22 through vias provided in the insulating layer.

[0083] Optionally, along a direction away from the plane where the substrate 1 is located, the conductive structure layer 20 includes a first conductive layer C1 , a first insulating layer 4 , a second conductive layer C2 and a second insulating layer 5 which are stacked.

[0084] Optionally, the material of the first insulating layer 4 and the second insulating layer 5 includes at least one of silicon nitride, silicon oxide and silicon oxynitride.

[0085] Optionally, the pressure-sensitive layer 3 is disposed between the first insulating layer 4 and the second conductive layer C2, such as Figure 3 As shown, or, the pressure-sensitive layer 3 is disposed between the second conductive layer C2 and the second insulating layer 5, as shown Figure 7 As shown, the second conductive layer C2 can be used to set the first electrode block 21 or the second electrode block 22, so that the pressure-sensitive layer 3 and the first electrode block 21 or the second electrode block 22 cooperate to achieve pressure-sensitive touch recognition.

[0086] See also Figure 8 The embodiment of the present invention further provides a touch panel driving method, which is used for the touch panel in any of the above embodiments, comprising:

[0087] S110: Detecting a first electrical parameter change of the conductive electrode block 2 in the conductive structure layer 20 through the floating touch chip 8. If the first electrical parameter change is greater than a first preset value, entering a floating touch state, the conductive electrode block 2 is configured as a floating touch electrode block;

[0088] S120: If the variation of the first electrical parameter is less than or equal to the first preset value, the pressure sensing state is entered, and the conductive electrode block 2 is configured as a pressure sensing electrode block.

[0089] The touch panel driving method provided in the embodiment of the present invention can be realized without the user having to touch the touch panel in suspended touch mode, while the pressure-sensitive touch mode requires the user to touch the touch panel, and the first electrical parameter change amount of the conductive electrode block 2 in the suspended touch mode is greater than the first electrical parameter change amount of the conductive electrode block 2 in the pressure-sensitive mode. Therefore, it is necessary to first determine whether the touch panel needs to enter the suspended touch mode, that is, the first electrical parameter change amount of the conductive electrode block 2 in the conductive structure layer 20 can be detected by the suspended touch chip 8. If the first electrical parameter change amount is greater than the first preset value, the suspended touch mode is entered, and the conductive electrode block 2 is in the suspended touch mode. Block 2 is configured as a suspended touch electrode block. If the change in the first electrical parameter is less than or equal to the first preset value, it enters a pressure-sensing state. The conductive electrode block 2 is configured as a pressure-sensing electrode block to realize suspended touch and pressure-sensing touch detection in a time-sharing manner according to actual conditions. The embodiment of the present application integrates a pressure-sensing touch function and a suspended touch function. The conductive electrode block 2 is configured to be used as a pressure-sensing electrode block and a suspended touch electrode block in a time-sharing manner. There is no need to set them in different film layers respectively, which effectively reduces the thickness of the touch panel, saves the number of mask plates required, simplifies the process flow and reduces the production cost, and improves the performance of the touch panel.

[0090] In step S110, it can be confirmed whether the floating touch chip 8 detects a change in the first electrical parameter and whether it is greater than a first preset value. The change in the first electrical parameter can specifically be a capacitance change value. The first preset value needs to be set according to the specific arrangement, size, material and other parameters of the conductive electrode block 2, and there is no special restriction.

[0091] In step S120, if the change in the first electrical parameter is less than or equal to the first preset value, the floating touch state is turned off, that is, the floating touch chip 8 does not work, and a pressure sensing signal can be sent to the conductive electrode block 2 through the pressure sensing control chip 9. The floating touch chip 8 and the pressure sensing control chip 9 can be set separately or integrated, that is, the floating touch chip 8 and the pressure sensing control chip 9 constitute a composite chip H.

[0092] In some optional embodiments, in the pressure sensing state, the pressure sensing control chip 9 detects the change in the second electrical parameter of the pressure sensing electrode block. If the change in the second electrical parameter is greater than the second preset value, the pressure sensing detection continues; if not, the floating touch state is entered.

[0093] In this embodiment, it is possible to first confirm whether the pressure sensing control chip 9 detects a change in the second electrical parameter and whether it is greater than a second preset value. The change in the second electrical parameter can be a change in resistance or voltage. If the change in the second electrical parameter is greater than the second preset value, the pressure sensing detection continues. If not, the pressure sensing state is turned off, that is, the pressure sensing control chip 9 does not work and enters a floating touch state.

[0094] An embodiment of the present invention further provides a display device, comprising the touch panel in any one of the above embodiments.

[0095] The display device provided by the embodiment of the present invention has the technical effect of the technical solution of the touch panel in any of the above embodiments, and the explanation of the structures and terms that are the same as or corresponding to the above embodiments will not be repeated here.

[0096] The display device provided in the embodiment of the present invention may be an organic light-emitting diode (OLED) display device, a quantum dot light-emitting diode (QLED) or a micro flat panel display device (Micro-OLED or Micro-LED).

[0097] The display device provided in the embodiment of the present application can be applied to a mobile phone, or it can be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiment of the present application does not make any special limitations on this.

[0098] The above are only specific implementation methods of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

[0099] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

Claims

1. A touch panel, characterized in that: include: substrate; A conductive structure layer is provided on one side of the substrate, the conductive structure layer includes a plurality of conductive electrode blocks, at least some of which are configured to be used as pressure sensing electrode blocks and suspension touch electrode blocks in a time-sharing manner; The pressure-sensitive layer is disposed adjacent to at least a portion of the conductive structure layer in a direction perpendicular to the plane where the substrate is located.

2. The touch panel according to claim 1, characterized in that: The conductive structure layer includes a first electrode block and a second electrode block insulated from each other, the first electrode block is arranged along a first direction, the second electrode block is arranged along a second direction, and the first direction and the second direction intersect; The pressure sensing electrode block includes a first pressure sensing electrode block and a second pressure sensing electrode block, and the suspended touch electrode block includes a first suspended touch electrode block and a second suspended touch electrode block; In the pressure sensing state, the first electrode block is used as the first pressure sensing electrode block, and the second electrode block is used as the second pressure sensing electrode block; In a floating touch state, the first electrode block is used as the first floating touch electrode block, and the second electrode block is used as the second floating touch electrode block; Preferably, the first electrode block and the second electrode block are arranged in the same layer; or, the first electrode block and the second electrode block are arranged in different layers; Preferably, along the first direction, the first electrode blocks located in the same row are electrically connected, and along the second direction, the second electrode blocks located in the same column are electrically connected.

3. The touch panel according to claim 1, characterized in that: The conductive structure layer includes first electrode blocks and second electrode blocks that are insulated from each other, the first electrode blocks are arranged along a first direction, the second electrode blocks are arranged along a second direction, the first direction and the second direction intersect, along the first direction, the first electrode blocks located in the same row are electrically connected, and the second electrode blocks are insulated from each other; The pressure sensing electrode block includes a first pressure sensing electrode block and a second pressure sensing electrode block; In the pressure sensing state, the first electrode block is used as the first pressure sensing electrode block, and the second electrode block is used as the second pressure sensing electrode block; In the suspended touch state, the second electrode block is used as the suspended touch electrode block; Preferably, the first electrode block and the second electrode block are arranged in the same layer; or, the first electrode block and the second electrode block are arranged in different layers; Preferably, in the floating touch state, the first electrode block is not energized or is connected to a constant voltage.

4. The touch panel according to claim 2 or 3, characterized in that: It also includes a pressure-sensing control chip, a suspended touch chip, a first signal line, and a second signal line; The conductive electrode block is electrically connected to the pressure sensing control chip through the first signal line, and the conductive electrode block is electrically connected to the suspension touch control chip through the second signal line; Along the second direction, the pressure sensing control chip and the suspended touch control chip are located on the same side or different sides of the conductive structure layer; Preferably, the first signal line includes a first sub-signal line and a second sub-signal line, the first sub-signal line is electrically connected to the first electrode block, and the second sub-signal line is electrically connected to the second electrode block; Preferably, the second signal line includes a third sub-signal line and a fourth sub-signal line, the third sub-signal line is electrically connected to the first electrode block, and the fourth sub-signal line is electrically connected to the second electrode block.

5. The touch panel according to claim 4, characterized in that: It also includes a plurality of multiplexers, each of the multiplexers is respectively connected to the second electrode blocks located in the same column along the second direction; Preferably, the multiplexer comprises a first multiplexing unit and a second multiplexing unit, the first multiplexing unit is electrically connected to the pressure sensing control chip, and the second multiplexing unit is electrically connected to the suspension touch control chip; Preferably, the first sub-signal line is electrically connected to the first multiplexing unit; Preferably, the second signal line and the second multiplexing unit are electrically connected.

6. The touch panel according to claim 2 or 3, characterized in that: It also includes a composite chip, a third signal line and a fourth signal line. The first electrode block is electrically connected to the composite chip through the third signal line, and the second electrode block is electrically connected to the composite chip through the fourth signal line.

7. The touch panel according to claim 1, characterized in that: The conductive structure layer includes at least two conductive layers, and the conductive electrode blocks are located in the same conductive layer, or at least part of the conductive electrode blocks are located in different conductive layers; Preferably, along a direction away from the plane where the substrate is located, the conductive structure layer includes a first conductive layer, a first insulating layer, a second conductive layer and a second insulating layer which are stacked; Preferably, the pressure-sensitive layer is disposed between the first insulating layer and the second conductive layer, or the pressure-sensitive layer is disposed between the second conductive layer and the second insulating layer.

8. A touch panel driving method, used for the touch panel according to any one of claims 1 to 7, characterized in that: include: Detecting a first electrical parameter change of a conductive electrode block in the conductive structure layer through a suspended touch chip, and if the first electrical parameter change is greater than a first preset value, entering a suspended touch state, and the conductive electrode block is configured as a suspended touch electrode block; If the variation of the first electrical parameter is less than or equal to a first preset value, the pressure sensing state is entered, and the conductive electrode block is configured as a pressure sensing electrode block.

9. The touch panel driving method according to claim 8, characterized in that: In the pressure sensing state, the second electrical parameter change of the pressure sensing electrode block is detected by the pressure sensing control chip. If the second electrical parameter change is greater than a second preset value, the pressure sensing detection is continued. If not, the floating touch state is entered.

10. A display device, characterized in that: The touch panel comprises the touch panel as claimed in any one of claims 1 to 8.

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