Display panel and display device

Abstract

The application relates to a display panel and a display device. The display panel comprises a substrate; a plurality of first touch electrodes and a plurality of second touch electrodes, which are arranged on one side of the substrate along the thickness direction; the plurality of first touch electrodes are arranged at intervals along a first direction, and each first touch electrode comprises a plurality of first electrode blocks arranged along a second direction; the plurality of second touch electrodes are arranged at intervals along the second direction, and each second touch electrode comprises a plurality of second electrode blocks arranged along the first direction, and a first electrode block is arranged between two adjacent second electrode blocks along the first direction, and the first touch electrodes and the second touch electrodes are insulated from each other; the size of each first electrode block along the first direction is smaller than the size of each first electrode block along the second direction, and the size of each second electrode block along the first direction is smaller than the size of each second electrode block along the second direction. Therefore, the display panel and the display device provided by the application can improve the touch performance of the display panel.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) display technology is considered the most promising next-generation flat panel display technology. Compared to liquid crystal displays, OLED technology offers advantages such as lower energy consumption, lower cost, self-emissiveness, wide viewing angles, and faster response times. However, the touch performance of displays made using these technologies still needs improvement. Summary of the Invention

[0003] Therefore, it is necessary to provide a display panel and a display device that can improve the touch performance of the display panel.

[0004] In a first aspect, embodiments of this application provide a display panel, including:

[0005] substrate;

[0006] A plurality of first touch electrodes are disposed on one side of the substrate along the thickness direction; the plurality of first touch electrodes are spaced apart along a first direction, and the first touch electrodes include a plurality of first electrode blocks arranged along a second direction, with adjacent first electrode blocks being electrically connected along the second direction.

[0007] Multiple second touch electrodes are disposed on the side of the substrate facing the first touch electrode; the multiple second touch electrodes are spaced apart along a second direction, and the second touch electrode includes multiple second electrode blocks arranged along a first direction, a first electrode block is disposed between two adjacent second electrode blocks along the first direction, and two adjacent second electrode blocks along the first direction are electrically connected, and the first touch electrode and the second touch electrode are insulated from each other.

[0008] Wherein, the dimension of the first electrode block along the first direction is smaller than the dimension of the first electrode block along the second direction, and the dimension of the second electrode block along the first direction is smaller than the dimension of the second electrode block along the second direction.

[0009] The display panel provided in this application embodiment has a first electrode block whose size along the first direction is smaller than its size along the second direction. This results in a smaller size of the first electrode block along the first direction, and consequently, a smaller size of the sub-repeating units of the touch layer along the first direction, which is beneficial for improving the touch accuracy and sensitivity of the display panel. Furthermore, the second electrode block's size along the first direction X is smaller than its size along the second direction Y. This also results in a smaller size of the second electrode block along the first direction, and consequently, a smaller size of the sub-repeating units of the touch layer along the first direction, which is beneficial for improving the touch accuracy and sensitivity of the display panel, thereby enhancing the touch performance of the display panel.

[0010] In one embodiment, a plurality of first touch electrodes and a plurality of second touch electrodes together form at least a portion of the touch layer; the touch layer includes a plurality of sub-repeating units, wherein the number of first electrode blocks and second electrode blocks in the sub-repeating units is greater than 0, and the plurality of sub-repeating units are arranged in a direction parallel to the substrate.

[0011] Preferably, the dimension of the sub-repeating unit along the first direction is smaller than the dimension of the sub-repeating unit along the second direction;

[0012] Preferably, the multiple sub-repeating units are arranged in an array along the first and second directions;

[0013] Preferably, the size of the sub-repeating unit along the first direction ranges from 1.0 mm to 1.5 mm;

[0014] Preferably, the dimension of the sub-repeating unit along the first direction is 1.3 mm.

[0015] In one embodiment, the sub-repetition unit includes a second electrode block;

[0016] Preferably, the first electrode block includes a first sub-electrode block and a second sub-electrode block connected together, and the first sub-electrode block and the second sub-electrode block are arranged along a first direction;

[0017] Preferably, the dimension of the first sub-electrode block along the first direction is equal to the dimension of the second sub-electrode block along the first direction;

[0018] Preferably, in the same first sub-electrode block, the first sub-electrode block includes a first sub-part and a second sub-part connected together, the first sub-part and the second sub-part arranged along a second direction; the second sub-electrode block includes a third sub-part and a fourth sub-part connected together, the third sub-part and the fourth sub-part arranged along a second direction, the first sub-part and the third sub-part arranged opposite each other along a first direction, and the second sub-part and the fourth sub-part arranged opposite each other along a first direction.

[0019] Preferably, the dimension of the first sub-part along the second direction is equal to the dimension of the second sub-part along the second direction;

[0020] Preferably, the dimension of the third sub-part along the second direction is equal to the dimension of the fourth sub-part along the second direction;

[0021] Preferably, in three adjacent first electrode blocks, the middle first sub-electrode block, the second sub-part adjacent to the first sub-electrode block, and the first sub-part adjacent to the first sub-electrode block together form a first structure; the middle second sub-electrode block, the fourth sub-part adjacent to the second sub-electrode block, and the third sub-part adjacent to the second sub-electrode block together form a second structure; in the sub-repetition unit, the sub-repetition unit includes a first structure and a second structure, the first structure and the second structure are respectively located on both sides of the second electrode block along the first direction.

[0022] In one embodiment, the touch layer includes a plurality of repeating units arranged in a direction parallel to the substrate, and the repeating units include a plurality of sub-repeating units arranged in a first direction.

[0023] Preferably, the number of sub-repeating units in the repeating unit is three;

[0024] Preferably, when the display panel is in the on state and the touch layer is in the non-touch state, in the same repeating unit, all the first electrode blocks and all the second electrode blocks have a first coupling capacitance.

[0025] When the display panel is on and the touch layer is in touch mode, in the same repeating unit, there is a second coupling capacitor between all the first electrode blocks and all the second electrode blocks.

[0026] The difference between the first coupling capacitor and the second coupling capacitor is greater than or equal to 20% of the ratio of the difference to the first coupling capacitor.

[0027] Preferably, the ratio of the difference between the first coupling capacitor and the second coupling capacitor to the first coupling capacitor is greater than or equal to 21%.

[0028] In one embodiment, the display panel is used for a stylus, the stylus including a connected pen barrel and a pen tip, the pen tip being used to contact the display panel;

[0029] The ratio of the maximum dimension of the pen tip along the direction perpendicular to the pen barrel to the pen tip to the dimension of the sub-repeating unit along the first direction is greater than 1 and less than or equal to 1.5.

[0030] In one embodiment, the display panel includes a plurality of first virtual electrodes, with a first virtual electrode disposed between two adjacent second electrode blocks along a second direction; and a first electrode block disposed between two adjacent first virtual electrodes along a first direction.

[0031] Preferably, a plurality of first virtual electrodes are arranged at intervals along a first direction to form a first virtual electrode group, and there are multiple first virtual electrode groups. The multiple first virtual electrode groups are arranged at intervals along a second direction, and the first virtual electrode groups and the second touch electrode are arranged alternately along the second direction.

[0032] Preferably, a plurality of first electrode blocks are arranged along a first direction to form a first electrode block group, and there are multiple first electrode block groups, which are arranged along a second direction; in one of two adjacent first electrode block groups, a second electrode block is disposed between two adjacent first electrode blocks along the first direction, and in the other of two adjacent first electrode block groups, a first virtual electrode is disposed between two adjacent first electrode blocks along the first direction.

[0033] Preferably, the dimension of the second electrode block along the second direction is larger than the dimension of the first electrode block along the second direction;

[0034] Preferably, the dimension of the first virtual electrode along the second direction is smaller than the dimension of the first electrode block along the second direction.

[0035] In one embodiment, two adjacent first electrode blocks along the second direction are electrically connected by a first connector, and two adjacent second electrode blocks along the first direction are electrically connected by a second connector, wherein at least a portion of the first connector and the second connector are disposed in different layers.

[0036] Preferably, the first electrode block and the second electrode block are disposed in the same layer and made of the same material;

[0037] Preferably, one of the first connector and the second connector is made of the same layer and material as the first electrode block;

[0038] Preferably, there are multiple first connectors between two adjacent first electrode blocks along the second direction, and the multiple first connectors are arranged at intervals along the first direction;

[0039] Preferably, among the plurality of first connectors located between two adjacent first electrode blocks along the second direction, the distance between each pair of adjacent first connectors is the same;

[0040] Preferably, there are multiple second connectors between two adjacent second electrode blocks along the first direction, and the multiple second connectors are arranged at intervals along the second direction;

[0041] Preferably, among the plurality of second connectors located between two adjacent second electrode blocks along the first direction, the distance between each pair of adjacent second connectors is the same;

[0042] Preferably, among the plurality of second connectors located between two adjacent second electrode blocks along the first direction, a portion of the second connectors are disposed at one end of the second electrode block along the second direction, and a portion of the second connectors are disposed at the other end of the second electrode block along the second direction.

[0043] In one embodiment, a second virtual electrode is disposed between the first electrode block and the second electrode block that are adjacent along a first direction.

[0044] In one embodiment, the display panel includes a third virtual electrode located on both sides of the first electrode block along a second direction;

[0045] Preferably, the outer contours of the first electrode block and the second electrode block are both strip-shaped.

[0046] Secondly, embodiments of this application provide a display device including the display panel described in the first aspect. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a partial top view of the touch layer provided in an embodiment of this application.

[0049] Figure 2 for Figure 1 A partially enlarged structural diagram.

[0050] Figure 3 This is a top view of a sub-repeating unit provided in an embodiment of this application.

[0051] Figure 4 Another top view of the sub-repeating unit provided in the embodiments of this application.

[0052] Figure 5 This is a schematic diagram of the structure of two adjacent first electrode blocks and a first connector provided in an embodiment of this application.

[0053] Explanation of reference numerals in the attached figures:

[0054] 100, Touch layer; 101, First touch electrode; 110, First electrode block; 110a, First electrode block group; 111, First sub-electrode block; 1111, First sub-section; 1112, Second sub-section; 112, Second sub-electrode block; 1123, Third sub-section; 1124, Fourth sub-section; 102, Second touch electrode; 120, Second electrode block; 131, Sub-repetition unit; 141, First structure; 142, Second structure; 151, First virtual electrode; 151a, First virtual electrode group; 152, Second virtual electrode; 153, Third virtual electrode; 161, First connector; 162, Second connector; X, First direction; Y, Second direction. Detailed Implementation

[0055] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0056] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, this does not indicate any order, quantity, or importance, but is merely used to distinguish different components. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Words such as “comprising” or “including” mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0058] Organic Light Emitting Diode (OLED) display technology is considered the most promising next-generation flat panel display technology. Compared with liquid crystal display technology, OLED display technology has advantages such as low energy consumption, low cost, self-emissiveness, wide viewing angle, and fast response speed.

[0059] In the process of developing this application, the inventors discovered the following problems in the related technology: the touch layer includes a first touch electrode and a second touch electrode, the first touch electrode and the second touch electrode intersect each other, the first touch electrode includes a plurality of first electrode blocks arranged along the row direction, and the second touch electrode includes a plurality of second electrode blocks arranged along the column direction. The first electrode blocks and the second electrode blocks have the same size along the row direction and the column direction, and both are set to be relatively large.

[0060] However, the dimensions of the first and second electrode blocks are large in both the row and column directions, which makes the dimensions of the smallest repeating unit of the touch layer large in both the row and column directions. This results in poor touch accuracy and sensitivity of the touch layer, and the touch performance of the display panel needs to be improved.

[0061] In view of at least one of the above problems, embodiments of this application provide a display panel and a display device that can improve the touch performance of the display panel.

[0062] The following will combine Figures 1-5 The display device provided in the embodiments of this application will be described.

[0063] This application provides a display device, which may include a display panel. The display device can be an electronic paper device, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, smart bracelet, smartwatch, supercomputer, navigator, wireless device, personal digital assistant (PDA), handheld or portable computer, GPS receiver / navigator, camera, MP4 video player, camcorder, game console, clock, calculator, television monitor, computer monitor, automotive display (e.g., odometer display), cockpit controller and / or display, camera view display (e.g., display of a rearview camera in a vehicle), electronic billboard or sign, projector, and other mobile or fixed terminals.

[0064] For example, the display panel can be an Organic Light-Emitting Diode (OLED) display panel, a Micro Organic Light-Emitting Diode (Micro OLED) display panel, a Light Emitting Diode (LED) display panel, a Quantum Dot Light Emitting Diode (QLED) display panel, a Mini Light Emitting Diode (MiniLED) display panel, a Micro Light Emitting Diode (Micro LED) display panel, or a Liquid Crystal Display (LCD) display panel, etc. This application uses an OLED display panel as an example for illustration.

[0065] The following describes the display panel provided in the embodiments of this application.

[0066] See Figure 1The display panel can have a first direction X, a second direction Y, and a third direction, all of which are different. The first direction X and the second direction Y can be any two different directions parallel to the display panel, and the third direction can be any direction intersecting the display panel. For example, the first direction X, the second direction Y, and the third direction can be perpendicular to each other. For example, the first direction X can be the width direction of the display panel, the second direction Y can be the length direction of the display panel, and the third direction can be the thickness direction of the display panel. The length, width, and thickness in the embodiments of this application are merely for descriptive convenience and do not imply any limitation on the dimensions. For example, the width can be greater than, equal to, or less than the length.

[0067] This application provides a display panel, which may include a substrate. The substrate may provide support for subsequent film layers.

[0068] See Figure 1 The display panel includes a plurality of first touch electrodes 101, which are disposed on one side of the substrate along the thickness direction. The plurality of first touch electrodes 101 are spaced apart along a first direction X, and each first touch electrode 101 includes a plurality of first electrode blocks 110 arranged along a second direction Y, with adjacent first electrode blocks 110 electrically connected along the second direction Y. The first touch electrode 101 includes a row of first electrode blocks 110.

[0069] See Figure 1 The display panel includes a plurality of second touch electrodes 102, which are disposed on the side of the substrate facing the first touch electrode 101. The second touch electrodes 102 are spaced apart along a second direction Y. Each second touch electrode 102 includes a plurality of second electrode blocks 120 arranged along a first direction X. A first electrode block 110 is disposed between two adjacent second electrode blocks 120 along the first direction X, and two adjacent second electrode blocks 120 are electrically connected along the first direction X. The first touch electrode 101 and the second touch electrode 102 are insulated from each other. The second touch electrode 102 includes a row of second electrode blocks 120. The first touch electrode 101 and the second touch electrode 102 intersect each other.

[0070] For example, one of the first touch electrode 101 and the second touch electrode 102 is a driving electrode, and the other of the first touch electrode 101 and the second touch electrode 102 is a sensing electrode (detection electrode).

[0071] See Figure 1 The size of the first electrode block 110 along the first direction X is smaller than the size of the first electrode block 110 along the second direction Y. This makes the size of the first electrode block 110 along the first direction X smaller, thus reducing the size of the sub-repeating unit 131 of the touch layer 100. Figure 3 The smaller size along the first direction X is beneficial for improving the touch accuracy and sensitivity of the display panel. Furthermore, the size of the second electrode block 120 along the first direction X is smaller than the size of the second electrode block 120 along the second direction Y. This results in a smaller size of the second electrode block 120 along the first direction X, and thus, the sub-repeating unit 131 of the touch layer 100 ( Figure 3 The smaller size along the first direction X is beneficial to improving the touch accuracy and sensitivity of the display panel, thereby improving the touch performance of the display panel.

[0072] In some embodiments, see Figure 2 Multiple first touch electrodes 101 and multiple second touch electrodes 102 together form at least a portion of the touch layer 100. The touch layer 100 includes multiple sub-repeating units 131. The number of first electrode blocks 110 and second electrode blocks 120 in each sub-repeating unit 131 is greater than 0. The number of first electrode blocks 110 and second electrode blocks 120 in each sub-repeating unit 131 can be an integer or a non-integer number. The sub-repeating unit 131 can be the smallest repeating unit of the touch layer 100. The multiple sub-repeating units 131 are arranged in a direction parallel to the substrate. By arranging multiple sub-repeating units 131 to form the touch layer 100, the design difficulty of the touch layer 100 is reduced.

[0073] In some embodiments, see Figure 2 The size of the sub-repetition unit 131 along the first direction X is smaller than the size of the sub-repetition unit 131 along the second direction Y. This makes the size of the sub-repetition unit 131 along the first direction X smaller, which is beneficial to improving the touch accuracy and sensitivity of the display panel.

[0074] In some embodiments, multiple sub-repetition units 131 are arranged in an array along the first direction X and the second direction Y. In this way, the arrangement of multiple sub-repetition units 131 is more regular, which helps to reduce the design difficulty of multiple sub-repetition units 131.

[0075] For example, the size range of the sub-repetition unit 131 along the first direction X is 1.0mm-1.5mm. This can avoid the sub-repetition unit 131 being too small along the first direction X, which helps to reduce the manufacturing difficulty of the sub-repetition unit 131. In addition, it can also avoid the sub-repetition unit 131 being too large along the first direction X, which helps to improve the touch accuracy and sensitivity of the display panel.

[0076] For example, the size of the sub-repetition unit 131 along the first direction X is 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm or any value between 1.0mm and 1.5mm.

[0077] In some embodiments, see Figure 3The sub-repetition unit 131 includes a second electrode block 120. Thus, the number of second electrode blocks 120 in each sub-repetition unit 131 is small, which simplifies the structure of the sub-repetition unit 131 to a certain extent, thereby reducing the design and manufacturing difficulty of the sub-repetition unit 131.

[0078] In some embodiments, see Figure 2 In the first electrode block 110, the first electrode block 110 includes a first sub-electrode block 111 and a second sub-electrode block 112 connected together. The first sub-electrode block 111 and the second sub-electrode block 112 are arranged along a first direction X. The first sub-electrode block 111 is located on the left side of the first electrode block 110, and the second sub-electrode block 112 is located on the right side of the first electrode block 110.

[0079] For example, the size of the first sub-electrode block 111 along the first direction X is equal to the size of the second sub-electrode block 112 along the first direction X, thus making it easier to divide the two adjacent sub-repetition units 131 along the first direction X.

[0080] In some embodiments, see Figure 2 In the same first sub-electrode block 111, the first sub-electrode block 111 includes a connected first sub-part 1111 and a second sub-part 1112, which are arranged along a second direction Y. The first sub-part 1111 may be located on the upper side of the first sub-electrode block 111, and the second sub-part 1112 may be located on the lower side of the first sub-electrode block 111. The second sub-electrode block 112 includes a connected third sub-part 1123 and a fourth sub-part 1124, which are arranged along the second direction Y. The third sub-part 1123 may be located on the upper side of the second sub-electrode block 112, and the fourth sub-part 1124 may be located on the lower side of the second sub-electrode block 112. The first sub-part 1111 and the third sub-part 1123 are arranged opposite each other along a first direction X, and the second sub-part 1112 and the fourth sub-part 1124 are arranged opposite each other along the first direction X.

[0081] For example, the size of the first sub-part 1111 along the second direction Y is equal to the size of the second sub-part 1112 along the second direction Y, thus making it easier to divide the two adjacent sub-repeating units 131 along the second direction Y.

[0082] For example, the dimension of the third sub-part 1123 along the second direction Y is equal to the dimension of the fourth sub-part 1124 along the second direction Y, thus making it easier to divide the two adjacent sub-repeating units 131 along the second direction Y.

[0083] In some embodiments, see Figure 2 and Figure 3In three adjacent first electrode blocks 110, the middle first sub-electrode block 111, the second sub-part 1112 adjacent to the first sub-electrode block 111, and the first sub-part 1111 adjacent to the first sub-electrode block 111 together form a first structure 141. The middle second sub-electrode block 112, the fourth sub-part 1124 adjacent to the second sub-electrode block 112, and the third sub-part 1123 adjacent to the second sub-electrode block 112 together form a second structure 142. In the sub-repetition unit 131, the sub-repetition unit 131 includes a first structure 141 and a second structure 142, which are located on both sides of the second electrode block 120 along the first direction X. For example, by splicing the first structure 141 and the second structure 142, two first electrode blocks 110 can be formed, which reduces the total number of spliced ​​first electrode blocks 110 in the sub-repetition unit 131, thus reducing the design difficulty of the sub-repetition unit 131.

[0084] In some embodiments, the touch layer 100 includes a plurality of repeating units arranged in a direction parallel to the substrate. Each repeating unit includes a plurality of sub-repeating units 131 arranged in a first direction X. Thus, by arranging the plurality of repeating units to form the touch layer 100, the number of repeating units is less than that of the sub-repeating units 131, which can further reduce the design difficulty of the touch layer 100.

[0085] For example, the number of sub-repeating units 131 in the repeating unit can be any number of 2, 3, 4 or more. This embodiment of the application is illustrated by taking three sub-repeating units 131 in the repeating unit as an example.

[0086] In some embodiments, when the display panel is in the on state and the touch layer 100 is in the non-touch state, a first coupling capacitance Cm is present between all first electrode blocks 110 and all second electrode blocks 120 in the same repeating unit. When the touch layer 100 is in the non-touch state, external objects (e.g., external objects may include fingers, styluses, etc.) do not contact the display panel; for example, fingers and / or styluses do not contact the display panel.

[0087] When the display panel is on and the touch layer 100 is in touch mode, a second coupling capacitance Cm' exists between all first electrode blocks 110 and all second electrode blocks 120 in the same repeating unit. When the touch layer 100 is in touch mode, if an external object contacts the display panel, such as a finger and / or a stylus, the touch layer 100 can detect the contact position between the external object and the display panel.

[0088] This application embodiment uses a stylus (e.g., an active stylus) as an example for illustration. When the touch layer 100 switches from a non-touch state to a touch state, the stylus switches from not touching the display panel to touching the display panel. The intervention of the stylus changes the coupling capacitance between all the first electrode blocks 110 and all the second electrode blocks 120 in the repeating unit (e.g., reducing the coupling capacitance). This makes the first coupling capacitance different from the second coupling capacitance. The difference ΔC between the first coupling capacitance Cm and the second coupling capacitance Cm' is greater than or equal to 20% of the ratio ΔC / Cm to the first coupling capacitance Cm. This results in a larger rate of change of the signal quantity in the repeating unit, which is beneficial for improving the signal-to-noise ratio (SNR), thereby improving the accuracy and reliability of the stylus's touch operation.

[0089] For example, the difference ΔC between the first coupling capacitor Cm and the second coupling capacitor Cm' is greater than or equal to 21% of the ratio ΔC / Cm of the first coupling capacitor Cm.

[0090] For example, the difference ΔC between the first coupling capacitor Cm and the second coupling capacitor Cm', and the ratio ΔC / Cm to the first coupling capacitor Cm can be any value of 20%, 21%, 22%, 23%, or greater than 20%.

[0091] It should be noted that ΔC / Cm is the rate of change of the signal in the repeating unit. The signal-to-noise ratio (SNR) is the ratio of signal to noise. A small rate of change of the signal means that the effective change of the signal is not high. When an active stylus performs a touch operation, because the signal change is not obvious and the background noise is relatively stable, the signal-to-noise ratio (SNR) will be poor. This will affect the accuracy and reliability of the active stylus's touch operation, and may lead to problems such as inaccurate touch position recognition or insensitive pressure sensing.

[0092] In some embodiments, the display panel is used for a stylus, which includes a connected shaft and a tip, the tip being used to contact the display panel. For example, the stylus can be an active stylus or a passive stylus. This application describes an embodiment using an active stylus as an example.

[0093] It should be noted that when the size of the sub-repetition unit 131 along the first direction X is larger than the size of the stylus tip, and the size difference between them is significant, the active stylus may not be able to effectively capacitively couple with the sub-repetition unit 131 when it contacts the display panel. This results in the signal emitted by the active stylus not being fully detected by the sub-repetition unit 131, leading to incomplete or inaccurate signal reception, which affects the accuracy and sensitivity of the touch. In addition, the active stylus is prone to sudden capacitance changes during movement. This sudden change in capacitance can make the capacitance coupled between the first electrode block 110 and the second electrode block 120 unstable, thereby affecting the display panel's judgment of the position and movement of the active stylus. This leads to a decrease in the linearity of the active stylus, causing the actual movement trajectory of the active stylus to be inconsistent with the trajectory detected by the display panel, resulting in a deviation.

[0094] In some embodiments, the ratio of the maximum dimension of the pen tip along the direction perpendicular to the pen barrel to the pen tip (for example, the maximum dimension can be the diameter of the pen tip) to the dimension of the sub-repetition unit 131 along the first direction X is greater than 1 and less than or equal to 1.5. This makes the maximum dimension of the pen tip along the direction perpendicular to the pen barrel to the pen tip greater than the dimension of the sub-repetition unit 131 along the first direction X. In addition, it also makes the difference between the maximum dimension of the pen tip along the direction perpendicular to the pen barrel to the pen tip and the dimension of the sub-repetition unit 131 along the first direction X smaller, so that the touch layer 100 can better receive the signals emitted by the stylus, improve the accuracy and sensitivity of touch, and also help to avoid capacitance change, improve the capacitance stability of the coupling between the first electrode block 110 and the second electrode block 120, and improve the linearity of the stylus.

[0095] The virtual electrodes provided in the embodiments of this application will be described below.

[0096] It should be noted that the virtual electrode may not have touch functionality and may not be connected to an electrical signal. By setting the virtual electrode in the area where the first touch electrode 101 and the second touch electrode 102 are not set, the display effect of the area where the first touch electrode 101 and the second touch electrode 102 are set and the area where the virtual electrode is set are more consistent, which is beneficial to improving the display effect of the display panel.

[0097] In some embodiments, participants Figure 1The display panel includes multiple first virtual electrodes 151. A first virtual electrode 151 is disposed between two adjacent second electrode blocks 120 along the second direction Y, and a first electrode block 110 is disposed between two adjacent first virtual electrodes 151 along the first direction X. This arrangement of first virtual electrodes 151 improves the display effect of the display panel. Furthermore, it reduces parasitic capacitance between the first touch electrode 101, the second touch electrode 102, and the cathode, thereby reducing parasitic capacitance load and interference with touch signal transmission and detection. Secondly, placing the first virtual electrode blocks 151 on non-main paths reduces the adverse impedance effects of the first virtual electrodes 151 on the first touch electrode 101 and the second touch electrode 102, reducing impedance load and touch signal attenuation and delay. The display panel can more sensitively detect finger or stylus touch actions and more accurately locate the touch point, thus improving the user's touch experience.

[0098] In some embodiments, participants Figure 1 Multiple first virtual electrodes 151 are arranged at intervals along a first direction X to form a first virtual electrode group 151a. The first virtual electrode group 151a may include a row of first virtual electrodes 151. There are multiple first virtual electrode groups 151a, which are arranged at intervals along a second direction Y. The first virtual electrode groups 151a and the second touch electrode 102 are arranged alternately along the second direction Y, so that the distribution of the first virtual electrode groups 151a and the second touch electrode 102 on the display panel is relatively uniform.

[0099] In some embodiments, participants Figure 1 Multiple first electrode blocks 110 are arranged along a first direction X to form a first electrode block group 110a, which may include a row of first electrode blocks 110. Multiple first electrode block groups 110a are arranged along a second direction Y. In one of two adjacent first electrode block groups 110a, a second electrode block 120 is disposed between two adjacent first electrode blocks 110 along the first direction X; in the other of two adjacent first electrode block groups 110a, a first virtual electrode 151 is disposed between two adjacent first electrode blocks 110 along the first direction X.

[0100] In some embodiments, the size of the second electrode block 120 along the second direction Y is larger than the size of the first electrode block 110 along the second direction Y. This is beneficial to increasing the area ratio of the second electrode block 120 in the sub-repetition unit 131 and to reducing the impedance of the second touch electrode 102.

[0101] In some embodiments, the size of the first virtual electrode 151 along the second direction Y is smaller than the size of the first electrode block 110 along the second direction Y. This makes the size of the first virtual electrode 151 along the second direction Y smaller, which is beneficial to setting the size of the second electrode block 120 along the second direction Y to be larger. This is beneficial to increasing the area ratio of the second electrode block 120 in the sub-repetition unit 131 and reducing the impedance of the second touch electrode 102.

[0102] In some embodiments, the first virtual electrode 151 includes a first sub-virtual electrode and a second sub-virtual electrode connected along the second direction Y. In the sub-repetition unit 131, the second electrode block 120 is provided with a first sub-virtual electrode and a second sub-virtual electrode on both sides along the second direction.

[0103] In some embodiments, see Figure 3 A second virtual electrode 152 is provided between the first electrode block 110 and the second electrode block 120 adjacent to each other along the first direction X. In this way, by setting the second virtual electrode 152, it is beneficial to improve the signal quantity change rate ΔC / Cm of the repeating unit and to solve the adaptation problem of the active stylus.

[0104] In some embodiments, there are multiple second virtual electrodes 152 between adjacent first electrode blocks 110 and second electrode blocks 120 along the first direction X, and the multiple second virtual electrodes 152 are arranged at intervals along the second direction Y. Alternatively, the second virtual electrodes 152 between adjacent first electrode blocks 110 and second electrode blocks 120 along the first direction X are an integral structure.

[0105] In some embodiments, see Figure 4 The display panel includes a third virtual electrode 153, which is located on both sides of the first electrode block 110 along the second direction Y. In an embodiment where the second connector 162 is disposed in the same layer and with the same material as the first electrode block 110 and the second electrode block 120, the third virtual electrode 153 is located between the second connector 162 and the first electrode block 110. By setting the third virtual electrode 153, it is beneficial to improve the signal change rate ΔC / Cm of the repetitive unit, and to solve the adaptation problem of the active stylus.

[0106] The first connector 161 and the second connector 162 provided in the embodiments of this application will be described below.

[0107] In some embodiments, see Figure 2 and Figure 5Two adjacent first electrode blocks 110 along the second direction Y are electrically connected by a first connector 161, and two adjacent second electrode blocks 120 along the first direction Y are electrically connected by a second connector 162. At least a portion of the first connector 161 and the second connector 162 are disposed in different layers. The orthographic projection of the first connector 161 on the substrate and the orthographic projection of the second connector 162 on the substrate overlap. The orthographic projection of the first electrode block 110 on the substrate and the orthographic projection of the second electrode block 120 on the substrate do not overlap. The first connector 161 and the second connector 162 are disposed at the intersection of the first touch electrode 101 and the second touch electrode 102. By displacing the first connector 161 and the second connector 162, short circuits between the first touch electrode 101 and the second touch electrode 102 at the intersection can be avoided.

[0108] In some embodiments, the first electrode block 110 and the second electrode block 120 are disposed in the same layer and with the same material, so that the first electrode block 110 and the second electrode block 120 can be prepared simultaneously, which can simplify the preparation process of the first electrode block 110 and the second electrode block 120 and reduce the preparation cost of the first electrode block 110 and the second electrode block 120.

[0109] It should be noted that "same layer, same material" in the embodiments of this application refers to forming a base film layer from the same material, and then, after patterning and / or other processing of the base film layer, forming various structural film layers from different parts of the base film layer. The processing processes for the different structural film layers can be the same or different, and the different structural film layers can have the same or different thicknesses, and can also be on the same horizontal plane or different horizontal planes.

[0110] In some embodiments, one of the first connector 161 and the second connector 162 is disposed in the same layer and with the same material as the first electrode block 110, thereby enabling the simultaneous fabrication of one of the first connector 161 and the second connector 162 and the first electrode block 110, which simplifies the fabrication process of one of the first connector 161 and the second connector 162 and the first electrode block 110, and reduces the fabrication cost of one of the first connector 161 and the second connector 162 and the first electrode block 110.

[0111] This application embodiment uses the example of the second connector 162 being made of the same layer and material as the first electrode block 110 and the second electrode block 120. For example, two adjacent second electrode blocks 120 along the first direction X can be connected by the second connector 162, thus forming an uninterrupted structure for the second touch electrode 102. Two adjacent first electrode blocks 110 of the first touch electrode 101 are disconnected but can be connected by a bridge formed by the first connector 161. The bridge can be located at the intersection of the first touch electrode 101 and the second touch electrode 102, preventing a short circuit between the first touch electrode 101 and the second touch electrode 102 at the intersection.

[0112] In some embodiments, see Figure 5 There are multiple first connectors 161 between two adjacent first electrode blocks 110 along the second direction Y. These multiple first connectors 161 are arranged at intervals along the first direction X. In this way, two adjacent first electrode blocks 110 along the second direction Y are connected by multiple first connectors 161, which helps to reduce the impedance of the first touch electrode 101.

[0113] In some embodiments, among the plurality of first connectors 161 located between two adjacent first electrode blocks 110 along the second direction Y, the distance between each pair of adjacent first connectors 161 is the same. In this way, the plurality of first connectors 161 located between two adjacent first electrode blocks 110 along the second direction Y can be evenly arranged, thereby reducing the design difficulty of the plurality of first connectors 161.

[0114] In some embodiments, see Figure 2 There are multiple second connectors 162 between two adjacent second electrode blocks 120 along the first direction X. The multiple second connectors 162 are arranged at intervals along the second direction Y. In this way, two adjacent second electrode blocks 120 along the first direction X are connected by multiple second connectors 162, which helps to reduce the impedance of the second touch electrode 102.

[0115] In some embodiments, among the plurality of second connectors 162 located between two adjacent second electrode blocks 120 along the first direction X, the distance between each pair of adjacent second connectors 162 is the same. In this way, the plurality of second connectors 162 located between two adjacent second electrode blocks 120 along the first direction X can be evenly arranged, thereby reducing the design difficulty of the plurality of second connectors 162.

[0116] In some embodiments, among the plurality of second connectors 162 located between two adjacent second electrode blocks 120 along the first direction X, a portion of the second connectors 162 are disposed at one end of the second electrode block 120 along the second direction Y, and a portion of the second connectors 162 are disposed at the other end of the second electrode block 120 along the second direction Y. For example, there are two second connectors 162 located between two adjacent second electrode blocks 120 along the first direction X, and the two second connectors 162 are respectively disposed at both ends of the second electrode block 120 along the second direction Y.

[0117] In some embodiments, the outer contours of the first electrode block 110 and the second electrode block 120 are both strip-shaped, which makes the outer contours of the first electrode block 110 and the second electrode block 120 relatively simple, which helps to reduce the design difficulty of the first electrode block 110 and the second electrode block 120.

[0118] For example, the material of at least one of the first electrode block 110, the second electrode block 120, and each virtual electrode may include metals such as titanium, silver, copper, aluminum, and molybdenum, or alloys, or conductive oxides (such as any one or more of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), aluminum zinc oxide (AZO), zinc gallium oxide, titanium tantalum oxide, tin oxide, cadmium oxide, and indium oxide).

[0119] In some embodiments, the first electrode block 110, the second electrode block 120, each virtual electrode, the first connector 161, and the second connector 162 can all be mesh structures. The mesh openings of the mesh structure can be correspondingly arranged with respect to the light-emitting units. The orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the corresponding mesh opening on the substrate. Taking the first electrode block 110 as a mesh structure as an example, the first electrode block 110 of the mesh structure can be located in the non-opening area of ​​the display panel so that the mesh structure does not block the opening area, thereby reducing the influence of the first electrode block 110 on the light emission of the light-emitting unit and thus reducing the impact of the first electrode block 110 on the display effect of the display area.

[0120] In this embodiment, the correspondence between A and B can refer to: one A corresponding to at least one B, or one B corresponding to at least one A. This embodiment uses the example of one A corresponding to one B. For example, the correspondence between light-emitting units and mesh openings can refer to: one light-emitting unit corresponding to at least one mesh opening, or one mesh opening corresponding to at least one light-emitting unit.

[0121] The following describes the light-emitting unit provided in the embodiments of this application.

[0122] In some embodiments, the light-emitting unit may include a first electrode, a light-emitting material, and a second electrode sequentially stacked along a direction away from the substrate, wherein the first electrode may be located on the side of the light-emitting material facing the substrate. One of the first electrode and the second electrode may be an anode, and the other of the first electrode and the second electrode may be a cathode.

[0123] For example, the light-emitting unit may also include one or more of a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL), an electron transport layer (ETL), a hole block layer (HBL), and an electron block layer (EBL).

[0124] For example, the multiple light-emitting units include, but are not limited to, red light-emitting units, green light-emitting units, and blue light-emitting units. In other examples, the multiple light-emitting units may also include white light-emitting units.

[0125] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0126] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0127] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: substrate; A plurality of first touch electrodes are disposed on one side of the substrate along the thickness direction; the plurality of first touch electrodes are spaced apart along a first direction, and each first touch electrode includes a plurality of first electrode blocks arranged along a second direction, with adjacent first electrode blocks being electrically connected along the second direction; A plurality of second touch electrodes are disposed on the side of the substrate facing the first touch electrode; the plurality of second touch electrodes are spaced apart along a second direction, each second touch electrode including a plurality of second electrode blocks arranged along a first direction, a first electrode block being disposed between two adjacent second electrode blocks along the first direction, and two adjacent second electrode blocks being electrically connected along the first direction, the first touch electrode and the second touch electrode being mutually insulated. Wherein, the dimension of the first electrode block along the first direction is smaller than the dimension of the first electrode block along the second direction, and the dimension of the second electrode block along the first direction is smaller than the dimension of the second electrode block along the second direction.

2. The display panel according to claim 1, characterized in that, The plurality of first touch electrodes and the plurality of second touch electrodes together form at least a portion of the touch layer; the touch layer includes a plurality of sub-repeating units, wherein the number of first electrode blocks and second electrode blocks in the sub-repeating units is greater than 0, and the plurality of sub-repeating units are arranged in a direction parallel to the substrate; Preferably, the dimension of the sub-repetition unit along the first direction is smaller than the dimension of the sub-repetition unit along the second direction; Preferably, the plurality of sub-repetitive units are arranged in an array along the first direction and the second direction; Preferably, the size of the sub-repeating unit along the first direction ranges from 1.0 mm to 1.5 mm; Preferably, the dimension of the sub-repeating unit along the first direction is 1.3 mm.

3. The display panel according to claim 2, characterized in that, The sub-repetition unit includes a second electrode block; Preferably, the first electrode block includes a first sub-electrode block and a second sub-electrode block connected together, and the first sub-electrode block and the second sub-electrode block are arranged along the first direction; Preferably, the dimension of the first sub-electrode block along the first direction is equal to the dimension of the second sub-electrode block along the first direction; Preferably, in the same first sub-electrode block, the first sub-electrode block includes a connected first sub-part and a second sub-part, the first sub-part and the second sub-part are arranged along the second direction; the second sub-electrode block includes a connected third sub-part and a fourth sub-part, the third sub-part and the fourth sub-part are arranged along the second direction, the first sub-part and the third sub-part are arranged opposite to each other along the first direction, and the second sub-part and the fourth sub-part are arranged opposite to each other along the first direction; Preferably, the dimension of the first sub-part along the second direction is equal to the dimension of the second sub-part along the second direction; Preferably, the dimension of the third sub-part along the second direction is equal to the dimension of the fourth sub-part along the second direction; Preferably, in three adjacent first electrode blocks, the middle first sub-electrode block, the second sub-part adjacent to the first sub-electrode block, and the first sub-part adjacent to the first sub-electrode block together form a first structure; the middle second sub-electrode block, the fourth sub-part adjacent to the second sub-electrode block, and the third sub-part adjacent to the second sub-electrode block together form a second structure; in the sub-repetition unit, the sub-repetition unit includes one first structure and one second structure, the first structure and the second structure being located on both sides of the second electrode block along the first direction.

4. The display panel according to claim 2, characterized in that, The touch layer includes multiple repeating units, which are arranged in a direction parallel to the substrate. Each repeating unit includes multiple sub-repeating units arranged in a first direction. Preferably, the number of sub-repeating units in the repeating unit is three; Preferably, when the display panel is in the on state and the touch layer is in the non-touch state, in the same repeating unit, there is a first coupling capacitance between all the first electrode blocks and all the second electrode blocks; When the display panel is in the on state and the touch layer is in the touch state, in the same repeating unit, there is a second coupling capacitor between all the first electrode blocks and all the second electrode blocks; The ratio of the difference between the first coupling capacitor and the second coupling capacitor to the first coupling capacitor is greater than or equal to 20%. Preferably, the ratio of the difference between the first coupling capacitor and the second coupling capacitor to the first coupling capacitor is greater than or equal to 21%.

5. The display panel according to claim 2, characterized in that, The display panel is used for a stylus, which includes a connected pen barrel and a pen tip, the pen tip being used to contact the display panel; The ratio of the maximum dimension of the pen tip along the direction perpendicular to the pen shaft to the pen tip to the dimension of the sub-repeating unit along the first direction is greater than 1 and less than or equal to 1.

5.

6. The display panel according to any one of claims 1-5, characterized in that, The display panel includes a plurality of first virtual electrodes, and a first virtual electrode is disposed between two adjacent second electrode blocks along the second direction; a first electrode block is disposed between two adjacent first virtual electrodes along the first direction; Preferably, a plurality of the first virtual electrodes are arranged at intervals along the first direction to form a first virtual electrode group, wherein there are multiple first virtual electrode groups, and the plurality of first virtual electrode groups are arranged at intervals along the second direction, and the first virtual electrode groups and the second touch electrode are arranged alternately along the second direction; Preferably, a plurality of first electrode blocks are arranged along the first direction to form a first electrode block group, and there are multiple first electrode block groups, which are arranged along the second direction; in one of two adjacent first electrode block groups, a second electrode block is disposed between two adjacent first electrode blocks along the first direction, and in the other of two adjacent first electrode block groups, a first virtual electrode is disposed between two adjacent first electrode blocks along the first direction. Preferably, the dimension of the second electrode block along the second direction is larger than the dimension of the first electrode block along the second direction; Preferably, the dimension of the first virtual electrode along the second direction is smaller than the dimension of the first electrode block along the second direction.

7. The display panel according to any one of claims 1-5, characterized in that, Two adjacent first electrode blocks along the second direction are electrically connected by a first connector, and two adjacent second electrode blocks along the first direction are electrically connected by a second connector, wherein at least a portion of the first connector and the second connector are disposed in different layers; Preferably, the first electrode block and the second electrode block are disposed in the same layer and made of the same material; Preferably, one of the first connector and the second connector is made of the same layer and material as the first electrode block; Preferably, there are multiple first connectors between two adjacent first electrode blocks along the second direction, and the multiple first connectors are arranged at intervals along the first direction; Preferably, among the plurality of first connectors located between two adjacent first electrode blocks along the second direction, the distance between each pair of adjacent first connectors is the same; Preferably, there are multiple second connectors between two adjacent second electrode blocks along the first direction, and the multiple second connectors are arranged at intervals along the second direction; Preferably, among the plurality of second connectors located between two adjacent second electrode blocks along the first direction, the distance between each pair of adjacent second connectors is the same; Preferably, among the plurality of second connectors located between two adjacent second electrode blocks along the first direction, a portion of the second connectors are disposed at one end of the second electrode block along the second direction, and a portion of the second connectors are disposed at the other end of the second electrode block along the second direction.

8. The display panel according to any one of claims 1-5, characterized in that, A second virtual electrode is disposed between the first electrode block and the second electrode block that are adjacent to each other along the first direction.

9. The display panel according to any one of claims 1-5, characterized in that, The display panel includes a third virtual electrode, which is located on both sides of the first electrode block along the second direction; Preferably, the outer contours of both the first electrode block and the second electrode block are strip-shaped.

10. A display device, characterized in that, Includes the display panel described in any one of claims 1-9 above.

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