Display panel and display device

Abstract

A display panel and a display device, the display panel having a display area and a non-display area located on at least one side of the display area, the display panel comprising a display backboard (10) and a touch layer group (5); the touch layer group is arranged on the display side of the display backboard, the touch layer group comprises a plurality of first touch units (501), a plurality of first touch wires (503), a plurality of second touch units (502) and a plurality of second touch wires (504), each first touch unit comprises a plurality of first touch electrodes (541) which are sequentially connected in the first direction, and each second touch electrode comprises a plurality of second touch electrodes (542) which are sequentially connected in the second direction. The second touch unit comprises a plurality of second touch electrodes (542) which are sequentially connected in the second direction, the first touch wires extend to the display area from the non-display area, in the display area, at least part of the first touch wires are connected to the non-end portion of the first touch unit, the second touch wires are connected to the second touch unit, and in the display area, the first touch wires are connected to the non-end portion of the second touch unit. The first direction intersects the second direction. The display panel is good in touch effect.

Description

Display panel and display device Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically, to a display panel and a display device. Background Technology

[0002] Organic Light-Emitting Display (OLED) backplanes have become the mainstream development direction in the display technology field due to their advantages such as self-illumination, high brightness, good image quality, and low power consumption. FMLOC (Flexible Multi Layer On Cell) design is currently mainstream in the OLED touch display field. FMLOC design refers to fabricating a metal electrode layer on the encapsulation layer assembly of the display backplane.

[0003] However, in current display panels, some touch units have a large RC load, which makes it difficult for the touch driver chip to drive them and affects the touch effect; moreover, the edge touch performance of the display panel is not good.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

[0005] Summary of the Invention

[0006] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a display panel and display device.

[0007] According to one aspect of this disclosure, a display panel is provided having a display area and a non-display area located at least one side of the display area, the display panel comprising:

[0008] Display back panel;

[0009] A touch layer assembly is disposed on the display side of the display back panel. The touch layer assembly includes a plurality of first touch units, a plurality of first touch traces, a plurality of second touch units, and a plurality of second touch traces. The first touch unit includes a plurality of first touch electrodes connected sequentially along a first direction. The second touch unit includes a plurality of second touch electrodes connected sequentially along a second direction. The first touch traces extend from the non-display area to the display area. In the display area, at least a portion of the first touch traces are connected to the non-ends of the first touch units. The second touch traces are connected to the second touch units. The first direction and the second direction intersect.

[0010] In one exemplary embodiment of this disclosure, the first touch trace includes:

[0011] The first part is located in the display area and extends along the second direction, and the first part is connected to the first touch unit;

[0012] The second part is connected to the first part, and the second part is located in the non-display area;

[0013] Among them, the length of the first portion of the multiple first touch traces increases sequentially in the second direction along the first direction.

[0014] In one exemplary embodiment of this disclosure, the first portion is disposed between two adjacent first touch electrodes.

[0015] In one exemplary embodiment of this disclosure, a first dummy portion is provided between the first portion and the first touch electrode, and the first portion and the first dummy portion are disposed in the same layer and made of the same material.

[0016] In one exemplary embodiment of this disclosure, a first gap is provided between the orthographic projection of the first portion on the display back panel and the orthographic projection of the first dummy portion on the display back panel, and the outline of the first gap is set as a curve.

[0017] In one exemplary embodiment of this disclosure, a second gap is provided between the orthographic projection of the first dummy part on the display back panel and the orthographic projection of the first touch electrode on the display back panel, and the outline of the second gap is set as a curve.

[0018] In one exemplary embodiment of this disclosure, at least a portion of the first gap is disposed parallel to at least a portion of the second gap.

[0019] In one exemplary embodiment of this disclosure, the plurality of first touch electrodes include a plurality of first touch patterns and a plurality of second touch patterns. The first touch pattern is the first touch electrode adjacent to the first portion, and the second touch pattern is disposed on the side of the first touch pattern opposite to the first portion. The shape of the orthographic projection of the first touch pattern on the display back panel is a part of the shape of the orthographic projection of the second touch pattern on the display back panel.

[0020] In one exemplary embodiment of this disclosure, the shape of the orthographic projection of the first touch pattern on the display back panel is half or less than half the shape of the orthographic projection of the second touch pattern on the display back panel.

[0021] In one exemplary embodiment of this disclosure, the first touch pattern has the largest dimension near the end of the first portion in the second direction.

[0022] In one exemplary embodiment of this disclosure, at least two of the first touch units form a group, and at least two of the first touch patterns belonging to the same group and adjacent in the second direction are connected.

[0023] In one exemplary embodiment of this disclosure, the second touch unit is disposed on the side of the first touch pattern opposite to the first portion.

[0024] In one exemplary embodiment of this disclosure, the first touch trace further includes:

[0025] The second dummy part is located on the side of the first part away from the second part, and the second dummy part is disconnected from the first part.

[0026] In one exemplary embodiment of this disclosure, at least two second touch units form a group, and at least two second touch electrodes belonging to the same group and adjacent in the first direction are connected, with the first portion disposed between two adjacent groups of second touch units.

[0027] In one exemplary embodiment of this disclosure, the touch layer group includes:

[0028] A base layer is disposed on the light-emitting side of the display back panel;

[0029] The first touch layer is disposed on the side of the base layer opposite to the display back panel;

[0030] A touch insulating layer is disposed on the side of the first touch layer opposite to the base layer, and the touch insulating layer is provided with a plurality of vias;

[0031] The second touch layer is disposed on the side of the touch insulating layer opposite to the base layer, and the second touch layer includes the first touch electrode and the second touch electrode.

[0032] In one exemplary embodiment of this disclosure, the first portion includes a second trace disposed on the second touch layer; the touch layer group further includes:

[0033] A first bridging portion is disposed on the first touch layer. The first bridging portion is connected to the second trace through a first via on the touch insulating layer, and the first bridging portion is connected to the first touch electrode through a second via on the touch insulating layer.

[0034] And / or, a first extension is disposed on the second touch layer, one end of the first extension is connected to the second trace, and the other end of the first extension is connected to the first touch electrode.

[0035] In an exemplary embodiment of this disclosure, the first portion includes a first trace and a second trace, the first trace being disposed on the first touch layer, the second trace being disposed on the second touch layer, and the second trace being connected to the first trace through a third via on the touch insulating layer; the touch layer group further includes:

[0036] A first extension is provided on the second touch layer, one end of the first extension is connected to the second trace, and the other end of the first extension is connected to the first touch electrode.

[0037] And / or, a first connection portion is disposed on the first touch layer, one end of the first connection portion is connected to the first trace, and the other end of the first connection portion is connected to the first touch electrode through a fourth via on the touch insulating layer.

[0038] In one exemplary embodiment of this disclosure, the first portion includes a first trace disposed on the first touch layer; the touch layer group further includes:

[0039] A first connection portion is disposed on the first touch layer. One end of the first connection portion is connected to the first trace, and the other end of the first connection portion is connected to the first touch electrode through a fourth via on the touch insulating layer.

[0040] In an exemplary embodiment of this disclosure, the second part includes a first segment and a second segment that are connected to each other. The width of the first segment is smaller than the width of the second segment. The orthographic projection of the first segment on the display back panel overlaps with the orthographic projection of the second touch trace on the display back panel.

[0041] And / or, the second touch trace includes a third part and a fourth part, the fourth part being connected to the third part, the width of the third part being smaller than the width of the fourth part, and the orthographic projection of the third part on the display back panel overlapping the orthographic projection of the first touch trace on the display back panel.

[0042] In one exemplary embodiment of this disclosure, a bonding pin is provided in the non-display area for bonding a circuit board on which a touch driver chip is mounted. The display area has a first edge line, which is a straight line located on one side of a second direction of the display area and between the display area and the bonding pin. The first touch trace extends across the first edge line to the display area.

[0043] In one exemplary embodiment of this disclosure, the second touch trace is connected to one end of the second touch unit in a second direction, and at least a portion of the second touch trace is located on the side of the first edge line away from the display area.

[0044] In one exemplary embodiment of this disclosure, the length of the first touch unit in the first direction is greater than the length of the second touch unit in the second direction.

[0045] According to another aspect of this disclosure, a display device is provided, comprising the display panel described in any of the preceding claims.

[0046] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0048] Figure 1 is a schematic diagram of the area division structure of the display panel of this disclosure.

[0049] Figure 2 is a schematic diagram of the structure of the flexible circuit board in Figure 1 after bending.

[0050] Figure 3 is a cross-sectional view of the display area in an example embodiment of the display panel in Figure 1.

[0051] Figure 4 is a schematic diagram of an example embodiment of the touch layer group of the display panel of this disclosure.

[0052] Figure 5 is a schematic diagram of the structure of the first touch unit in Figure 4.

[0053] Figure 6 is a schematic diagram of the structure of the second touch unit in Figure 4.

[0054] Figure 7 is a partial structural schematic diagram of another example embodiment of the touch layer group of the display panel of this disclosure.

[0055] Figure 8 is a magnified view of the part indicated by H in Figure 7.

[0056] Figure 9 is a partially enlarged schematic diagram of the part indicated by I in Figure 7.

[0057] Figure 10 is a partial structural schematic diagram of another exemplary embodiment of the touch layer group of the display panel of this disclosure.

[0058] Figure 11 is a schematic cross-sectional view of the section cut according to section AA in Figure 8.

[0059] Figure 12 is a schematic diagram of another example embodiment of the touch layer group of the display panel of this disclosure, in which the second trace is connected to the first touch electrode.

[0060] Figure 13 is a magnified view of the part indicated by M in Figure 7.

[0061] Figure 14 is a cross-sectional view of the section cut according to section BB in Figure 13.

[0062] Figure 15 is a schematic diagram of another example embodiment of the touch layer group of the display panel of this disclosure, in which the first trace is connected to the first touch electrode.

[0063] Figure 16 is a schematic diagram of the structure of the first part of the first touch trace in the display panel of this disclosure, which is set as a double-layer structure.

[0064] Figure 17 is a schematic diagram of an example embodiment in which the first part of the first touch trace in the display panel of this disclosure is configured as a double-layer structure and the first part is connected to the first touch electrode.

[0065] Figure 18 is a schematic diagram of another example embodiment of the first touch trace in the display panel of this disclosure being connected to the first touch electrode when the first part is configured as a double-layer structure.

[0066] Figure 19 is a schematic diagram of the structure in which the second part of the first touch trace in the display panel of this disclosure cooperates with the second touch trace.

[0067] Explanation of reference numerals in the attached figures:

[0068] 10. Display back panel;

[0069] 1. Substrate; 2. Driving substrate;

[0070] 3. Light-emitting substrate; 31. First electrode; 32. Pixel definition layer; 33. Light-emitting layer group; 34. Second electrode;

[0071] 4. Encapsulation layer group;

[0072] 5. Touch layer group; 501. First touch unit; 502. Second touch unit; 503. First touch trace; 5031. First part; 50311. First trace; 50312. Second trace; 5032. Second part; 50321. First segment; 50322. Second segment; 5033. Second dummy part; 504. Second touch trace; 5041. Third part; 5042. Fourth part; 505. First dummy part; 506. First gap; 507. Second gap; 508. Third dummy part;

[0073] 51. Basal layer;

[0074] 52. First touch layer; 521. First connecting part; 522. First bridging part;

[0075] 53. Touch insulating layer; 531. First via; 532. Second via; 533. Third via; 534. Fourth via; 535. Fifth via;

[0076] 54. Second touch layer; 541. First touch electrode; 541a. First touch pattern; 541b. Second touch pattern; 542. Second touch electrode; 543. First extension;

[0077] 55. Protective layer;

[0078] 6. Touch driver chip; 7. Flexible circuit board;

[0079] AA, Display area; L1, First edge; L2, Second edge; L3, Third edge; L4, Fourth edge; L5, Fifth edge; L6, Sixth edge; NA, Non-display area;

[0080] X, the first direction; Y, the second direction. Detailed Implementation

[0081] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0082] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0083] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0084] In this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0085] This disclosure provides a display panel, as shown in Figures 1-19, where black dots and structures marked with "×" within rectangles represent via connection structures. The display panel has a display area AA and a non-display area NA located on at least one side of the display area AA. The display panel may include a display backplate 10 and a touch layer group 5. The touch layer group 5 is disposed on the display side of the display backplate 10 and may include multiple first touch units 501, multiple first touch traces 503, multiple second touch units 502, and multiple second touch traces 503. The control trace 504, the first touch unit 501 may include a plurality of first touch electrodes 541 connected in sequence along the first direction X, the second touch unit 502 may include a plurality of second touch electrodes 542 connected in sequence along the second direction Y, the first touch trace 503 extends from the non-display area NA to the display area AA, and in the display area AA, at least a portion of the first touch trace 503 is connected to the non-end of the first touch unit 501, the second touch trace 504 is connected to the second touch unit 502, and the first direction X and the second direction Y intersect.

[0086] The display panel disclosed herein allows for several advantages. Firstly, the touch driving signal generated by the touch driver chip 6 can be transmitted to the first touch unit 501 via the first touch trace 503, and then from the non-end of the first touch unit 501 to both ends, thereby shortening the transmission path of the touch driving signal. Alternatively, the touch sensing signal generated at one end of the first touch unit 501 does not need to be transmitted to the other end, but is instead transmitted to the touch driver chip 6 via the first touch trace 503 connected to the non-end, further shortening the transmission path of the touch sensing signal. This reduces the RC loading of the first touch unit 501, increases the amount of touch signal, and is beneficial for driving the touch driver chip 6 or sensing the touch sensing signal.

[0087] On the other hand, the first touch trace 503 extends to the display area AA, making the length of the first touch trace 503 enclosed in the non-display area NA shorter. That is, the area occupied by the first touch trace 503 in the non-display area NA is reduced, which can increase the area occupied by the first touch unit 501 and the second touch unit 502. This allows the patterns of the first touch electrode 541 and the second touch electrode 542 at the edge to be set more completely, reducing the attenuation of the touch signal and improving the edge touch performance.

[0088] Referring to Figures 1 and 2, the display panel may include a display area AA for displaying images and a non-display area NA for not displaying images. The display area AA can display images and enable touch functionality. The non-display area NA is located on at least one side of the display area AA. For example, the non-display area NA may be provided on only one side of the display area AA, or it may be provided on both sides of the display area AA, or it may be provided on all four sides of the display area AA.

[0089] A bonding pin (not shown in the figure) is provided in the non-display area NA. The bonding pin is used to bond the circuit board on which the touch driver chip 6 is mounted. That is, external devices can be mounted (or attached) on the bonding pin. External devices may include flexible circuit board 7, touch driver chip 6, and display driver chip (not shown in the figure), etc. In addition, chip-on-flex (COF), connectors, etc. can also be mounted on the bonding pin as external devices. One or more external devices can be mounted in the non-display area NA.

[0090] The touch driver chip 6 can be mounted on the same surface of the flexible circuit board 7 as the display surface. Referring to FIG2, when the flexible circuit board 7 is bent in reverse, the touch driver chip 6 is located on the side of the display panel opposite to the display surface.

[0091] The touch driver chip 6 can be bonded to the flexible circuit board 7 by anisotropic conductive adhesive or by ultrasonic bonding.

[0092] The touch driver chip 6 may include an integrated circuit that drives the touch layer group 5. In one embodiment, the integrated circuit may be a touch driver integrated circuit that generates and provides touch driving signals, but this disclosure is not limited thereto. The touch driver chip 6 is connected to the bonding pins of the display panel to provide touch driving signals to the bonding pins and to receive touch sensing signals fed back from the touch layer group 5.

[0093] In this example embodiment, referring to FIG1, the display panel can be an irregularly shaped display panel, such that the display area AA is set to an irregular shape. For example, the display panel can be a vehicle-mounted elongated display panel. Of course, in some other example embodiments of this disclosure, the display panel can be a general rectangular display panel, such that the display area AA is set to a rectangle.

[0094] The length of the display panel in the first direction X is greater than the width of the display panel in the second direction Y, so that the length of the display area AA in the first direction X is greater than the width in the second direction Y.

[0095] Specifically, referring to Figure 1, the display area AA has a first edge line L1, a second edge line L2, a third edge line L3, a fourth edge line L4, a fifth edge line L5, and a sixth edge line L6 connected end to end in sequence, and adjacent edge lines can be smoothly connected by an arc.

[0096] The first edge line L1 is a straight line, located on one side of the second direction Y of the display area AA, and situated between the display area AA and the bonding pin. The fourth edge line L4 is an arc, protruding away from the display area AA. The fourth edge line L4 is positioned opposite to the first edge line L1, and extends substantially along the first direction X. The first edge line L1 and the fourth edge line L4 are the two long sides of the display area AA.

[0097] The second edge line L2 and the sixth edge line L6 are basically symmetrically arranged, and both are straight lines. The angle between the second edge line L2 and the sixth edge line L6 and the first edge line L1 is an obtuse angle. The third edge line L3 and the fifth edge line L5 are basically symmetrically arranged, and both are straight lines. The third edge line L3 and the fifth edge line L5 are basically perpendicular to the first edge line L1. The second edge line L2 and the third edge line L3 form one short side of the display area AA, and the fifth edge line L5 and the sixth edge line L6 form the other short side of the display area AA.

[0098] Of course, irregularly shaped display panels can also have other structures, which will not be listed here.

[0099] In this example embodiment, referring to FIG3, the display panel may include a display back panel 10, which may include a substrate 1, a driving substrate 2, a light-emitting substrate 3, and an encapsulation layer group 4. The driving substrate 2 can drive the light-emitting substrate 3 to emit light. The driving substrate 2 is disposed on one side of the substrate 1, and the light-emitting substrate 3 is disposed on the side of the driving substrate 2 opposite to the substrate 1. The encapsulation layer group 4 is disposed on the side of the light-emitting substrate 3 opposite to the substrate 1.

[0100] The display back panel 10 can be an OLED (Organic Electroluminescence Display) display back panel 10, a QLED (Quantum Dot Light Emitting Diodes) display back panel 10, a Micro-LED (Micro-light emitting diode) display back panel 10, etc.; the display back panel 10 has a light-emitting side and a non-light-emitting side, which are arranged opposite to each other. The light-emitting side can display the image, and the side displaying the image is the display surface.

[0101] In this example embodiment, taking the OLED display backplane 10 as an example, the driving substrate 2 may include multiple switching units, each of which may include multiple thin-film transistors and capacitors, and the multiple switching units are arranged in an array; a first planarization layer is provided on the side of the multiple switching units away from the substrate 1, and the first planarization layer provides a relatively flat base surface for the film layer to be formed subsequently.

[0102] A light-emitting substrate 3 is disposed on the side of the first planarization layer away from the substrate 1. Referring to FIG3, the light-emitting substrate 3 may include a first electrode 31, a pixel definition layer 32, a light-emitting layer group 33, and a second electrode 34.

[0103] Specifically, a first electrode 31 is provided on the side of the first planarization layer away from the substrate 1. The first electrode 31 is connected to the switching unit of the driving substrate 2. The first electrode 31 can be an anode.

[0104] A pixel definition layer 32 is disposed on the side of the first electrode 31 facing away from the substrate 1. A pixel opening is disposed on the pixel definition layer 32, and a light-emitting layer group 33 is disposed within the pixel opening. A second electrode 34 is disposed on the side of the light-emitting layer group 33 facing away from the substrate 1. The second electrode 34 can be a cathode and is connected to the ground line VSS. The light-emitting layer group 33 within a pixel opening emits light to form a sub-pixel. Therefore, the light-emitting layer group 33 within a pixel opening is a sub-pixel, such that the orthographic projection of the sub-pixel on the display back panel 10 is the orthographic projection of the light-emitting layer group 33 on the display back panel 10. The display back panel 10 can include multiple sub-pixels.

[0105] The light-emitting layer group 33 may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer stacked sequentially. The hole injection layer is in contact with the first electrode 31, and the electron injection layer is in contact with the second electrode 34. Of course, in other exemplary embodiments of this disclosure, the light-emitting layer group 33 may only include a hole transport layer, a light-emitting layer, and an electron transport layer. The light-emitting layer group 33 may also have other structures, and its specific structure can be set as needed.

[0106] The display backplane 10 may further include an encapsulation layer group 4. The encapsulation layer group 4 is disposed on the side of the second electrode 34 away from the substrate 1. The encapsulation layer group 4 is used to encapsulate the display backplane 10, preventing external moisture, impurities, etc., from entering the interior of the display backplane 10 and affecting its display effect. The encapsulation layer group 4 can be multi-layered, and may include organic and inorganic layers. Specifically, the encapsulation layer group 4 may include a first inorganic layer, an organic layer disposed on the side of the first inorganic layer away from the substrate 1, and a second inorganic layer disposed on the side of the organic layer away from the substrate 1. The materials of the first inorganic layer, organic layer, and second inorganic layer will not be described further here. Of course, the encapsulation layer group 4 may also include more or fewer layers.

[0107] In this exemplary embodiment, referring to FIG3, a touch layer group 5 is provided on the side of the encapsulation layer group 4 away from the substrate 1. Referring to FIGS. 4-6, the touch layer group 5 may include a plurality of first touch units 501, a plurality of first touch traces 503, a plurality of second touch units 502, and a plurality of second touch traces 504. The plurality of first touch units 501 and the plurality of second touch units 502 may be separated in the middle of the first direction X to form two parts, and two flexible circuit boards 7 and two touch driver chips 6 are provided thereon. One flexible circuit board 7 and one touch driver chip 6 control one part.

[0108] It should be noted that the multiple first touch lines 503 and multiple second touch lines 504 located in the non-display area NA are arranged in a single-line spaced-apart structure. However, due to the high density in Figures 4-6, even if they are drawn as single-line spaced-apart structures, they cannot be clearly distinguished. Therefore, the multiple first touch lines 503 and multiple second touch lines 504 located in the non-display area NA are drawn as a single structure.

[0109] Referring to Figures 4 and 5, the first touch unit 501 has a linear shape extending along a first direction X, and a plurality of first touch units 501 are arranged sequentially along a second direction Y. Each first touch unit 501 may include a plurality of first touch electrodes 541 connected sequentially along the first direction X.

[0110] Referring to Figures 4 and 6, the second touch unit 502 has a linear shape extending along the second direction Y, and a plurality of second touch units 502 are arranged sequentially along the first direction X. Each second touch unit 502 may include a plurality of second touch electrodes 542 connected sequentially along the second direction Y.

[0111] It should be noted that in this disclosure, the first direction X intersects with the second direction Y, for example, the first direction X is perpendicular to the second direction Y.

[0112] Multiple first touch units 501 and multiple second touch units 502 constitute M rows of driving electrodes * N columns of sensing electrodes, that is, including M first touch units 501 and N second touch units 502, where M and N are positive integers greater than two.

[0113] In some exemplary embodiments, the first touch electrode 541 and the second touch electrode 542 may have a rhomboid shape, such as a regular rhombus, a horizontally elongated rhombus, or a vertically elongated rhombus. Furthermore, the dividing line between the first touch electrode 541 and the second touch electrode 542 may be a curve; for example, the dividing line may be a broken line, such that the edges of the first touch electrode 541 and the second touch electrode 542 form a stepped shape. The dividing line between the first touch electrode 541 and the second touch electrode 542 is formed by connecting the two electrodes through a broken line opening. In some possible implementations, the first touch electrode 541 and the second touch electrode 542 may have any one or more of the following shapes: triangle, square, trapezoid, parallelogram, pentagon, hexagon, and other polygons; this disclosure does not limit the specific shape.

[0114] One of the first touch unit 501 and the second touch unit 502 serves as a touch driving unit, receiving touch driving signals, while the other serves as a touch sensing unit, generating touch sensing signals when there is a touch action.

[0115] The specific touch control principle is as follows: The second touch electrode 542 and the first touch electrode 541 can form a capacitor, and multiple first touch electrodes 541 and multiple second touch electrodes 542 can form multiple capacitors (e.g., C1, C2, C3, etc.). Each capacitor is located at a different position in the display area AA; that is, in a coordinate system formed by the first direction X and the second direction Y, each capacitor is located at a different coordinate point. The touch driver chip 6 transmits a touch drive signal (e.g., a trigger signal) to the first touch trace 503, and the touch drive signal is transmitted to the first touch electrode 541 through the first touch trace 503. At this time, each capacitor at the aforementioned different positions will have an initial capacitance value. Since the human body is a conductor, when a person's finger touches a certain position on the display panel, the capacitance value of the capacitor at that position will change. Based on the amount of change in capacitance value, the second touch electrode 542 at that position will receive a corresponding touch sensing signal (e.g., a receive signal). The touch sensing signal on the second touch electrode 542 at this location is transmitted to the touch driver chip 6 through the second touch trace 504. The capacitance value of the capacitor at the untouched location remains unchanged. Therefore, by determining the capacitance value of each capacitor, the touch point can be determined, thereby realizing the touch function. Of course, the functions of the first touch electrode 541 and the first touch trace 503 can be interchanged with those of the second touch electrode 542 and the second touch trace 504.

[0116] In this example embodiment, because the length of the display panel in the first direction X is greater than the width of the display panel in the second direction Y, the length of the first touch unit 501 in the first direction X is greater than the length of the second touch unit 502 in the second direction Y. If the first touch trace 503 is connected to the end of the first touch unit 501, and the touch signal transmission starts from the end of the first touch unit 501, the longer length of the first touch unit 501 in the first direction X results in a larger RC load on the first touch unit 501, making it difficult for the touch driver chip 6 to drive it.

[0117] In this example embodiment, referring to Figures 4 and 5, the first touch trace 503 extends from the non-display area NA to the display area AA, that is, a portion of the first touch trace 503 is located in the display area AA, and the other portion of the first touch trace 503 is located in the non-display area NA. Specifically, the first touch trace 503 may include a first portion 5031 and a second portion 5032; the first portion 5031 is located in the display area AA, and the first portion 5031 extends along the second direction Y, the extension direction of the first portion 5031 intersects with the extension direction of the first touch trace 503, and the first portion 5031 is connected to the first touch unit 501; the second portion 5032 is located in the non-display area NA, one end of the second portion 5032 is connected to the first portion 5031, and the other end of the second portion 5032 is connected to the touch driver chip 6 through the flexible circuit board 7. The touch driving signal generated by the touch driver chip 6 is transmitted to the first part 5031 through the second part 5032, and then to the first touch unit 501 through the first part 5031; or the touch sensing signal generated by the first touch unit 501 is transmitted to the second part 5032 through the first part 5031, and then to the touch driver chip 6 through the second part 5032.

[0118] Furthermore, at least a portion of the first touch traces 503 are connected to the non-end portions of the first touch unit 501. For example, at least a portion of the first touch traces 503 are connected to the approximate middle portion of the first touch unit 501. For example, all the first touch traces 503 may be connected to the non-end portions of the first touch unit 501 in a one-to-one correspondence, or a portion of the first touch traces 503 may be connected to the non-end portions of the first touch unit 501 in a one-to-one correspondence, while another portion of the first touch traces 503 may be connected to the end portions of the first touch unit 501 in a one-to-one correspondence.

[0119] It should be noted that the "non-endpoint" of the first touch unit 501 refers to a position of the first touch unit 501 that is not an endpoint. The first touch trace 503 is connected to the non-endpoint of the first touch unit 501, such that there are parts of the structure of the first touch unit 501 on both sides of the connection between the first touch trace 503 and the first touch unit 501.

[0120] Because the display area AA is set to an irregular shape, the lengths of the multiple first touch units 501 are different in the first direction X. For the first touch unit 501 with a longer length in the first direction X, the first touch line 503 is connected to the non-end of the first touch unit 501. For the first touch unit 501 with a shorter length in the first direction X, the first touch line 503 can be connected to the end of the first touch unit 501.

[0121] For example, referring to Figure 5, the first touch unit 501, which is closer to the fourth edge line L4, has a shorter length in the first direction X, so the first touch trace 503 can be connected to the end of the first touch unit 501. Of course, the specific connection method may vary depending on the shape of the display area AA, and will not be described in detail here.

[0122] Since at least a portion of the first touch trace 503 is connected to the non-end of the first touch unit 501, the touch driving signal generated by the touch driver chip 6 can be transmitted to the first touch unit 501 through the first touch trace 503, and from the non-end of the first touch unit 501 to both ends of the first touch unit 501, thereby shortening the transmission path of the touch driving signal; or, the touch sensing signal generated at one end of the first touch unit 501 does not need to be transmitted to the other end, but is transmitted to the touch driver chip 6 through the first touch trace 503 connected to the non-end, thereby shortening the transmission path of the touch sensing signal; reducing the RC load of the first touch unit 501, increasing the amount of touch signal, which is beneficial to the driving of the touch driver chip 6 or the sensing of the touch sensing signal.

[0123] In this example embodiment, the first edge line L1 is located between the display area AA and the bonding pin. The first touch trace 503 extends across the first edge line L1 to the display area AA, so that the second part 5032 of the first touch trace 503 can be located only in the non-display area NA where the bonding pin is set, without having to be routed to the irregular rounded corner area. This reduces the space in the irregular rounded corner area used for laying the first touch trace 503, and allows the extra space in the irregular rounded corner area to compensate for the incompleteness of the first touch electrode 541 and the second touch electrode 542 in the irregular area, reducing the attenuation of the touch signal and improving the edge touch performance.

[0124] In this example embodiment, the second touch trace 504 is connected to the second touch unit 502. Specifically, the second touch trace 504 is located in the non-display area NA. One end of the second touch trace 504 is connected to one end of the second touch unit 502 in the second direction Y, and the other end of the second touch trace 504 is connected to the touch driver chip 6 through the flexible circuit board 7. The touch driving signal generated by the touch driver chip 6 is transmitted to the second touch unit 502 through the second touch trace 504; or the touch sensing signal generated by the second touch unit 502 is transmitted to the touch driver chip 6 through the second touch trace 504.

[0125] Furthermore, at least a portion of the second touch traces 504 are located on the side of the first edge line L1 away from the display area AA, meaning at least a portion of the second touch traces 504 are introduced from the first edge line L1, which is set as a straight line. Specifically, most of the second touch traces 504 can be introduced from the first edge line L1, and a small portion of the second touch traces 504 can be introduced from the second edge line L2 and the sixth edge line L6. This allows most of the second touch traces 504 to be located only in the non-display area NA where the bonding pins are set, without needing to wrap around to the irregular rounded corner area. This reduces the space in the irregular rounded corner area used for laying the second touch traces 504, allowing the excess space in the irregular rounded corner area to compensate for the incompleteness of the first touch electrode 541 and the second touch electrode 542 in the irregular area, reducing the attenuation of the touch signal and improving edge touch performance.

[0126] In this example embodiment, referring to Figures 4 and 5, since the first portions 5031 of the multiple first touch traces 503 all start from the first edge line L1, the length of the first portions 5031 of the multiple first touch traces 503 in the second direction Y increases sequentially along the first direction X, so that the first portions 5031 of the multiple first touch traces 503 form an approximately triangular shape. Moreover, the first portion 5031 connected to the first touch unit 501 closest to the first edge line L1 has the shortest length in the second direction Y, and the first portion 5031 connected to the first touch unit 501 furthest from the first edge line L1 has the longest length in the second direction Y. The multiple first portions 5031 are connected to the multiple first touch units 501 sequentially along the second direction Y in a one-to-one correspondence.

[0127] Alternatively, the length of the first portion 5031 in the second direction Y increases as the distance from the central region of the display area AA in the first direction X decreases, or the length of the first portion 5031 in the second direction Y increases as the distance from the central axis of the display panel extending along the second direction Y decreases.

[0128] Of course, in some other exemplary embodiments of this disclosure, the length of the first portion 5031 in the second direction Y may decrease as the distance from the central region of the display area AA in the first direction X decreases, or the length of the first portion 5031 in the second direction Y may decrease as the distance from the central axis of the display panel extending along the second direction Y decreases.

[0129] Referring to FIG7, the first part 5031 is disposed between two adjacent first touch electrodes 541. The signals on the first part 5031 and the first touch electrodes 541 are the same, both being touch sensing signals or touch driving signals. However, the signals on the first part 5031 and the second touch unit 502 are different. By placing the first part 5031 adjacent to the first touch electrodes 541, the first part 5031 and the second touch unit 502 can be avoided from being adjacent to each other, thereby reducing the interference between the touch driving signal and the touch sensing signal.

[0130] Of course, in some other exemplary embodiments of this disclosure, as shown in FIG10, a portion of the first portion 5031 may be disposed between two adjacent first touch electrodes 541, and another portion of the first portion 5031 may be disposed between two adjacent second touch electrodes 542.

[0131] In this example embodiment, referring to FIG7, a first dummy portion 505 is provided between the first portion 5031 and the first touch electrode 541. The first dummy portion 505 isolates the first portion 5031 from the first touch electrode 541. The first dummy portion 505 is only for the convenience of uniform setting and manufacturing process. The first dummy portion 505 does not receive touch signals. Therefore, the first dummy portion 505 does not need to be connected to the first touch trace 503 and the second touch trace 504.

[0132] The first part 5031 and the first dummy part 505 are disposed on the same layer and made of the same material. For example, both the first part 5031 and the first dummy part 505 are disposed on the second touch layer 54. Of course, the first part 5031 and the first dummy part 505 can also be disposed on the first touch layer 52, or both the first part 5031 and the first dummy part 505 can be disposed on the first touch layer 52 and the second touch layer 54.

[0133] The first touch layer 52 and the second touch layer 54 are configured as a conductive mesh structure, that is, the first touch layer 52 and the second touch layer 54 are formed by multiple meshes formed by interwoven metal wires, and the mesh is a polygon composed of multiple mesh lines. The orthographic projection of the sub-pixel on the substrate 1 is located within the orthographic projection of the mesh on the substrate 1, so as to avoid the mesh lines blocking the light emitted by the sub-pixel and ensure the display effect of the display panel.

[0134] Therefore, in Figure 7, the first touch electrode 541, the second touch electrode 542, the first part 5031, the first dummy part 505, etc. are formed by dividing the conductive mesh structure through the broken opening. That is, the line segments that divide the first touch electrode 541, the second touch electrode 542, the first part 5031, the first dummy part 505, etc. in Figure 7 are formed by connecting the broken opening.

[0135] Specifically, referring to Figures 8 and 9, a first gap 506 is provided between the orthographic projection of the first portion 5031 on the display back panel 10 and the orthographic projection of the first dummy portion 505 on the display back panel 10. The first gap 506 may include multiple broken line openings, which break multiple grid lines to form the first portion 5031 and the first dummy portion 505. That is, one side of the broken line opening is the first portion 5031, and the other side of the broken line opening is the first dummy portion 505. The first gap 506 is formed by connecting multiple broken line openings.

[0136] The outline of the first gap 506 can be set as a curve, which can include one, two or more of the following: rectangular wave, triangular wave, semi-circular wave, and trapezoidal wave. A curved first gap 506 has a better anti-aliasing effect than setting the first gap 506 as a straight line.

[0137] A second gap 507 is provided between the orthographic projection of the first dummy part 505 on the display back panel 10 and the orthographic projection of the first touch electrode 541 on the display back panel 10. The second gap 507 may include multiple broken wire openings, which interrupt multiple grid lines to form the first touch electrode 541 and the first dummy part 505. That is, one side of the broken wire opening is the first touch electrode 541, and the other side of the broken wire opening is the first dummy part 505. The second gap 507 is formed by connecting multiple broken wire openings.

[0138] The outline of the second gap 507 can be set as a curve, which can include one, two or more of the following: rectangular wave, triangular wave, semi-circular wave, and trapezoidal wave. A curved second gap 507 has a better anti-aliasing effect than setting the second gap 507 as a straight line.

[0139] Optionally, at least a portion of the first gap 506 and at least a portion of the second gap 507 may be arranged in parallel. For example, a portion of the first gap 506 may be arranged in parallel with a portion of the second gap 507, or all of the first gap 506 and all of the corresponding portions of the second gap 507 may be arranged in parallel. Since both the first gap 506 and the second gap 507 are curved, the parallel arrangement of the first gap 506 and the second gap 507 refers to the parallel arrangement of corresponding portions of the first gap 506 and the second gap 507, not that all portions of the first gap 506 and all portions of the second gap 507 are parallel. For example, the first gap 506 may include multiple rectangular waves, and the second gap 507 may also include multiple rectangular waves, with one rectangular wave of the first gap 506 and one rectangular wave of the second gap 507 arranged in parallel. Of course, in some other exemplary embodiments of this disclosure, the first gap 506 and the second gap 507 may not be arranged in parallel.

[0140] In this example embodiment, referring to FIG7, the plurality of first touch electrodes 541 may include a plurality of first touch patterns 541a and a plurality of second touch patterns 541b. The first touch pattern 541a is a first touch electrode 541 adjacent to the first portion 5031, and the second touch pattern 541b is disposed on the side of the first touch pattern 541a away from the first portion 5031, that is, the first touch pattern 541a is closer to the first portion 5031 than the second touch pattern 541b.

[0141] The shape of the orthographic projection of the first touch pattern 541a on the display back panel 10 is a part of the shape of the orthographic projection of the second touch pattern 541b on the display back panel 10, such that the area of ​​the orthographic projection of the first touch pattern 541a on the display back panel 10 is smaller than the area of ​​the orthographic projection of the second touch pattern 541b on the display back panel 10.

[0142] Specifically, the shape of the orthographic projection of the first touch pattern 541a on the display back panel 10 can be half the shape of the orthographic projection of the second touch pattern 541b on the display back panel 10, such that the area of ​​the orthographic projection of the first touch pattern 541a on the display back panel 10 can be equal to half the area of ​​the orthographic projection of the second touch pattern 541b on the display back panel 10. A second touch pattern 541b can be divided into two first touch patterns 541a. The two first touch patterns 541a formed by the division are moved and separated along the first direction X. Within the interval formed by the separation, a first portion 5031 and two first dummy portions 505 on both sides of the first portion 5031 are provided.

[0143] The shape of the orthographic projection of the first touch pattern 541a on the display back panel 10 can also be less than half the shape of the orthographic projection of the second touch pattern 541b on the display back panel 10, so that the area of ​​the orthographic projection of the first touch pattern 541a on the display back panel 10 can be less than half the area of ​​the orthographic projection of the second touch pattern 541b on the display back panel 10.

[0144] Alternatively, the first touch pattern 541a has the largest size near the end of the first portion 5031 in the second direction Y, so that the first touch pattern 541a can isolate the first portion 5031 more from the second touch unit 502, so that the first portion 5031 does not need to be arranged adjacent to the second touch electrode 542, thus avoiding signal interference between the first portion 5031 and the second touch unit 502.

[0145] For example, the orthographic projection of the second touch pattern 541b onto the display back panel 10 can be a rhombus, a horizontally elongated rhombus, or a vertically elongated rhombus; then the orthographic projection of the first touch pattern 541a onto the display back panel 10 can be a structure of half or less than half of a rhombus (triangle), or a structure of half or less than half of a horizontally elongated rhombus (triangle), or a structure of half or less than half of a vertically elongated rhombus (triangle); and the base of the triangle is positioned closer to the first portion 5031, rather than the vertex of the triangle being positioned closer to the first portion 5031. Of course, other shapes are also possible, which will not be listed here.

[0146] Alternatively, referring to FIG7, at least two first touch units 501 can form a group. For example, two first touch units 501 can form a group, or three or more first touch units 501 can form a group. This arrangement allows at least two first touch units 501 to form a parallel structure, thereby reducing the impedance of the group of first touch units 501; moreover, it can increase the adjacent boundary line between the group of first touch units 501 and the second touch unit 502, thereby increasing the amount of touch signal.

[0147] At least two first touch patterns 541a belonging to the same group and adjacent in the second direction Y are connected; for example, when two first touch units 501 form a group, the two first touch patterns 541a belonging to the same group and adjacent in the second direction Y are connected; when three first touch units 501 form a group, the three first touch patterns 541a belonging to the same group and adjacent in the second direction Y are connected; when multiple first touch units 501 form a group, the multiple first touch patterns 541a belonging to the same group and adjacent in the second direction Y are connected. This arrangement allows at least two first touch units 501 in the same group to be electrically connected and jointly transmit electrical signals; moreover, the connected at least two first touch patterns 541a can almost completely isolate the first part 5031 from the second touch unit 502, so that the first part 5031 does not need to be adjacent to the second touch electrode 542, avoiding signal interference between the first part 5031 and the second touch unit 502.

[0148] Furthermore, as shown in Figures 7 and 9, the first dummy part 505 can extend between two adjacent groups of first touch units 501. The first dummy part 505 can electrically isolate the two adjacent groups of first touch units 501, preventing the two adjacent groups of first touch units 501 from being electrically connected.

[0149] In this exemplary embodiment, referring to FIG7, the second touch unit 502 is disposed on the side of the first touch pattern 541a opposite to the first portion 5031, such that the first touch pattern 541a and the first dummy portion 505 are disposed between the second touch unit 502 and the first portion 5031. Since the second touch unit 502 transmits a touch sensing signal and the first portion 5031 transmits a touch driving signal respectively, distancing them can reduce interference between the signals.

[0150] In this example embodiment, referring to Figures 7 and 9, the first touch trace 503 may further include a second dummy part 5033. The second dummy part 5033 is located on the side of the first part 5031 away from the second part 5032. The second dummy part 5033 is only for the convenience of uniform setting and manufacturing process. The second dummy part 5033 does not receive touch signals. Therefore, the second dummy part 5033 is disconnected from the first part 5031 so that the second dummy part 5033 is not connected to either the first touch trace 503 or the second touch trace 504.

[0151] The specific structure of the second dummy part 5033 is basically the same as that of the first part 5031, except that the length of the second dummy part 5033 in the second direction Y is different from that of the first part 5031 in the second direction Y. The first part 5031 and the second dummy part 5033, which belong to the same first touch line 503, run through the entire display area AA in the second direction Y. If the first part 5031 is set to be longer, the second dummy part 5033 needs to be set to be shorter.

[0152] Furthermore, the second dummy part 5033 is also disposed between two adjacent first touch electrodes 541, and a first dummy part 505 is disposed between the second dummy part 5033 and the first touch electrode 541. A first gap 506 is provided between the orthographic projection of the second dummy part 5033 on the display back panel 10 and the orthographic projection of the first dummy part 505 on the display back panel 10. Of course, the second dummy part 5033 and the first dummy part 505 can also be connected as one unit without the first gap 506.

[0153] Optionally, at least two second touch units 502 can form a group. For example, two second touch units 502 can form a group, or three or more second touch units 502 can form a group. This arrangement allows at least two second touch units 502 to form a parallel structure, thereby reducing the impedance of the group of second touch units 502; moreover, it can increase the adjacent boundary line between the group of second touch units 502 and the first touch unit 501, thereby increasing the amount of touch signal.

[0154] At least two second touch electrodes 542 belonging to the same group and adjacent in the first direction X are connected. For example, when two second touch units 502 form a group, the two second touch electrodes 542 belonging to the same group and adjacent in the first direction X are connected; when three second touch units 502 form a group, the three second touch electrodes 542 belonging to the same group and adjacent in the first direction X are connected; when multiple second touch units 502 form a group, the multiple second touch electrodes 542 belonging to the same group and adjacent in the first direction X are connected. This arrangement ensures that at least two second touch units 502 in the same group are electrically connected and jointly transmit electrical signals.

[0155] The first part 5031 is located between two adjacent groups of second touch units 502. Since the second touch units 502 in the same group need to be electrically connected, the first part 5031 cannot be located.

[0156] It should be noted that the first part 5031 can be provided between all two adjacent groups of second touch units 502, or the first part 5031 can be provided between some two adjacent groups of second touch units 502, while the first part 5031 is not provided between other two adjacent groups of second touch units 502. The specific configuration can be determined based on the number of second touch units 502 and the number of first parts 5031.

[0157] Furthermore, since the first part 5031 is connected to the non-end of the first touch unit 501, the first part 5031 is generally provided between two adjacent groups of second touch units 502 located in the middle part of the first direction X of the display area AA, and the first part 5031 is not provided between two adjacent groups of second touch units 502 located at both ends of the first direction X of the display area AA.

[0158] Referring to Figures 7 and 10, when a first portion 5031 is not provided between two adjacent groups of second touch units 502, the touch layer group 5 may also include a third dummy portion 508. The third dummy portion 508 is only for convenient uniform setting and manufacturing; it does not receive touch signals and therefore does not need to be connected to any structure requiring power. The specific structure of the third dummy portion 508 is basically the same as the specific structure of the longest first portion 5031. For example, the third dummy portion 508 is also located between two adjacent first touch electrodes 541, and a first dummy portion 505 is provided between the third dummy portion 508 and the first touch electrode 541. A first gap 506 is provided between the orthographic projection of the third dummy portion 508 on the display back panel 10 and the orthographic projection of the first dummy portion 505 on the display back panel 10. Of course, the third dummy portion 508 and the first dummy portion 505 can also be connected as one unit without the first gap 506.

[0159] In this example embodiment, referring to FIG3, the touch layer group 5 may include a base layer 51, a first touch layer 52, a touch insulating layer 53, a second touch layer 54, and a protective layer 55. The base layer 51 is disposed on the light-emitting side of the display back panel 10. Specifically, the base layer 51 is disposed on the side of the encapsulation layer group 4 away from the substrate 1, and the material of the base layer 51 is generally SiNx. The first touch layer 52 is disposed on the side of the base layer 51 away from the display back panel 10. The first touch layer 52 may be a Ti / Al / Ti three-layer structure, an ITO / Ag / ITO three-layer structure, etc. The touch insulating layer 53 is disposed on the side of the first touch layer 52 away from the base layer 51. The touch insulating layer 53 has multiple vias and is generally made of SiNx. The second touch layer 54 is disposed on the side of the touch insulating layer 53 away from the base layer 51. The second touch layer 54 may be a Ti / Al / Ti, an ITO / Ag / ITO three-layer structure, etc. A protective layer 55 is disposed on the side of the second touch layer 54 facing away from the substrate 1, and the material of the protective layer 55 is PI (polyimide). Of course, the materials and structures of the above-mentioned film layers are only illustrative examples, and can be selected and configured as needed.

[0160] The second touch layer 54 may include a first touch electrode 541 and a second touch electrode 542, such that the first touch electrode 541 and the second touch electrode 542 are far away from the display back panel 10, thereby reducing or even avoiding the influence of the display signal of the display back panel 10 on the touch signal.

[0161] In some exemplary embodiments of this disclosure, the first part 5031 may be configured as a single-layer structure. For example, as shown in FIG8 and FIG11, the first part 5031 may include a second trace 50312, which is disposed on the second touch layer 54, such that the second trace 50312 and the first touch electrode 541 are disposed on the same layer, but a first dummy part 505 is disposed between the second trace 50312 and the first touch electrode 541.

[0162] In this case, the touch layer group 5 may further include a first bridging portion 522, which is disposed on the first touch layer 52. The first bridging portion 522 is not disposed on the same layer as the second trace 50312 and the first touch electrode 541. The first bridging portion 522 extends along the first direction X. The first bridging portion 522 is connected to the second trace 50312 through a first via 531 on the touch insulating layer 53, and is connected to the first touch electrode 541 through a second via 532 on the touch insulating layer 53. The second trace 50312 is connected to the first touch electrode 541 through the first bridging portion 522. Specifically, the middle part of the first bridging part 522 is connected to the second trace 50312 through the first via 531 on the touch insulating layer 53, and the two ends of the first bridging part 522 are connected to the first touch electrodes 541 on both sides through the second via 532 on the touch insulating layer 53, thereby connecting the second trace 50312 to the two first touch electrodes 541 on both sides through the first bridging part 522.

[0163] Alternatively, referring to Figure 12, the touch layer group 5 may further include a first extension portion 543, which is disposed on the second touch layer 54. The first extension portion 543, the second trace 50312, and the first touch electrode 541 are disposed on the same layer. The first extension portion 543 extends along the first direction X and passes through the first dummy portion 505. The first extension portion 543 and the first dummy portion 505 are disconnected, so that there is no connection between the first extension portion 543 and the first dummy portion 505. One end of the first extension portion 543 is connected to the second trace 50312, and the other end of the first extension portion 543 is connected to the first touch electrode 541. The second trace 50312 can be connected to the first touch electrode 541 through the first extension portion 543, and the second trace 50312 can be connected to the first touch electrodes 541 on both sides through the two first extension portions 543.

[0164] Of course, in some exemplary embodiments of this disclosure, a first bridging portion 522 and a first extension portion 543 may be provided simultaneously. The second trace 50312 and the first touch electrode 541 are connected through the first bridging portion 522 and the first extension portion 543 to ensure the connection effect between the second trace 50312 and the first touch electrode 541, and to reduce the connection impedance. The specific structure of the first bridging portion 522 and the first extension portion 543 is the same as described above, and will not be repeated here.

[0165] Referring to Figures 13 and 14, at the second dummy portion 5033, since the second dummy portion 5033 does not need to be connected to any structure that requires power, the first bridging portion 522 does not need to be connected to the second dummy portion 5033. The first bridging portion 522 directly crosses the second dummy portion 5033 and is connected to the first touch electrodes 541 on both sides of the second dummy portion 5033 through the fifth via 535 on the touch insulating layer 53.

[0166] For example, referring to FIG15, the first part 5031 may include a first trace 50311, which is disposed on the first touch layer 52, so that the first trace 50311 and the first touch electrode 541 are not disposed on the same layer. The touch layer group 5 may also include a first connection part 521, which is also disposed on the first touch layer 52. The first connection part 521 extends along the first direction X. One end of the first connection part 521 is connected to the first trace 50311, and the other end of the first connection part 521 is connected to the first touch electrode 541 through the fourth via 534 on the touch insulating layer 53. The first trace 50311 can be connected to the first touch electrode 541 through the first connection part 521, and the first trace 50311 can be connected to the first touch electrodes 541 on both sides through the two first connection parts 521.

[0167] In some exemplary embodiments of this disclosure, the first portion 5031 may be configured as a two-layer structure. Specifically, referring to FIG16, the first portion 5031 may include a first trace 50311 and a second trace 50312. The first trace 50311 is disposed on the first touch layer 52, such that the first trace 50311 and the first touch electrode 541 are not disposed on the same layer. The second trace 50312 is disposed on the second touch layer 54, such that the second trace 50312 and the first touch electrode 541 are disposed on the same layer, but a first dummy portion 505 is provided between the second trace 50312 and the first touch electrode 541. The second trace 50312 can be connected to the first trace 50311 through the third via 533 on the touch insulating layer 53, so that the second trace 50312 and the first trace 50311 are connected as one unit. The touch driving signal input through the second part 5032 can be transmitted to the first trace 50311 and the second trace 50312 at the same time, ensuring the uniformity of touch driving signal transmission.

[0168] In this case, the touch layer group 5 may further include a first connection portion 521, which is disposed on the first touch layer 52. The first connection portion 521 is disposed on the same layer as the first trace 50311 and the first touch electrode 541. The first connection portion 521 extends along the first direction X. One end of the first connection portion 521 is connected to the first trace 50311, and the other end of the first connection portion 521 is connected to the first touch electrode 541 through the fourth via 534 on the touch insulating layer 53. The first trace 50311 and the first touch electrode 541 are connected through the first connection portion 521.

[0169] Alternatively, referring to Figure 17, the touch layer group 5 may further include a first extension 543, which is disposed on the second touch layer 54. The first extension 543 is disposed on the same layer as the second trace 50312 and the first touch electrode 541. The first extension 543 extends along the first direction X and passes through the first dummy part 505 (not shown in Figure 17). The first extension 543 and the first dummy part 505 are disconnected, so that there is no connection between the first extension 543 and the first dummy part 505. One end of the first extension 543 is connected to the second trace 50312, and the other end of the first extension 543 is connected to the first touch electrode 541. The second trace 50312 can be connected to the first touch electrode 541 through the first extension 543, and the second trace 50312 can be connected to the two first touch electrodes 541 on both sides through the two first extensions 543.

[0170] Of course, in some exemplary embodiments of this disclosure, referring to FIG18, the first extension portion 543 and the first connecting portion 521 can be provided simultaneously. The first extension portion 543 and the first connecting portion 521 can connect the first part 5031 to the first touch electrode 541 to ensure the connection effect between the first part 5031 and the first touch electrode 541, and can reduce the connection impedance. The specific structure of the first extension portion 543 and the first connecting portion 521 is the same as described above, and will not be repeated here.

[0171] Furthermore, a portion of the second touch electrodes 542 can be connected as a single unit via a bridging portion disposed on the first touch layer 52, and a portion of the second touch electrodes 542 can also be connected as a single unit on the second touch layer 54. The first touch electrodes 541 not adjacent to the first portion 5031 can be connected as a single unit on the second touch layer 54.

[0172] Referring to FIG19, in some exemplary embodiments of this disclosure, most of the first touch trace 503 and the second touch trace 504 are introduced from the first edge line L1 to the display area AA, which causes the first touch trace 503 and the second touch trace 504 to cross each other, and parasitic capacitance is generated at the crossing position.

[0173] The second part 5032 may include a first segment 50321 and a second segment 50322 that are interconnected. The width of the first segment 50321 in its width direction is smaller than the width of the second segment 50322 in its width direction. The width direction of the first segment 50321 is perpendicular to the extension direction of the first segment 50321, and the width direction of the second segment 50322 is perpendicular to the extension direction of the second segment 50322. The width directions of the first segment 50321 and the second segment 50322 may be the same or different. The orthographic projection of the first segment 50321 on the display back panel 10 overlaps with the orthographic projection of the second touch trace 504 on the display back panel 10. Because the width of the first segment 50321 in its width direction is smaller, the parasitic capacitance generated is smaller, thereby reducing the influence of parasitic capacitance on the touch signal.

[0174] The second touch trace 504 may include a third part 5041 and a fourth part 5042. The fourth part 5042 is connected to the third part 5041. The width of the third part 5041 in its width direction is smaller than the width of the fourth part 5042 in its width direction. The width direction of the third part 5041 is perpendicular to the extension direction of the third part 5041, and the width direction of the fourth part 5042 is perpendicular to the extension direction of the fourth part 5042. The width directions of the third part 5041 and the fourth part 5042 may be the same or different. The orthographic projection of the third part 5041 on the display back panel 10 overlaps with the orthographic projection of the first touch trace 503 on the display back panel 10. Specifically, the orthographic projection of the third part 5041 on the display back panel 10 overlaps with the orthographic projection of the first segment 50321 on the display back panel 10. Since the width of the third part 5041 in its width direction is smaller, the parasitic capacitance generated is smaller, thereby reducing the influence of parasitic capacitance on the touch signal.

[0175] Of course, in some exemplary embodiments of this disclosure, the second portion 5032 may be configured to include only the interconnected first segment 50321 and second segment 50322, while the width of the second touch trace 504 is substantially the same at all points; the second touch trace 504 may also be configured to include only the interconnected third portion 5041 and fourth portion 5042, while the width of the second portion 5032 is substantially the same at all points; similarly, the generated parasitic capacitance can be reduced, thereby reducing the influence of parasitic capacitance on the touch signal.

[0176] Generally, the second part 5032 and the second touch trace 504 can be set in different touch layers. For example, the second part 5032 can be set in the first touch layer 52 and the second touch trace 504 can be set in the second touch layer 54; or, the second part 5032 can be set in the second touch layer 54 and the second touch trace 504 can be set in the first touch layer 52.

[0177] Alternatively, the second part 5032 and most of the second touch trace 504 can be placed on the same touch layer, with only the intersection points placed on different layers; for example, the second part 5032 can be placed on the first touch layer 52, the fourth part 5042 can be placed on the first touch layer 52, and the third part 5041 can be placed on the second touch layer 54 to form a bridging structure; or, the second part 5032 can be placed on the second touch layer 54, the fourth part 5042 can be placed on the second touch layer 54, and the third part 5041 can be placed on the first touch layer 52 to form a bridging structure; or, the second touch trace 504 can be placed on the first touch layer 52, the second segment 50322 can be placed on the first touch layer 52, and the first segment 50321 can be placed on the second touch layer 54 to form a bridging structure; or, the second touch trace 504 can be placed on the second touch layer 54, the second segment 50322 can be placed on the second touch layer 54, and the first segment 50321 can be placed on the first touch layer 52 to form a bridging structure.

[0178] Based on the same inventive concept, the present disclosure provides a display device that may include the display panel described in any of the above-mentioned embodiments. The specific structure of the display panel has been described in detail above, and therefore will not be repeated here.

[0179] The specific type of display device is not particularly limited; any type of display device commonly used in the field is acceptable, such as mobile devices like mobile phones, in-vehicle display devices, VR devices, etc. Those skilled in the art can make the appropriate selection according to the specific purpose of the display device, which will not be elaborated here.

[0180] Compared with the prior art, the beneficial effects of the display device provided by the example embodiments of the present invention are the same as the beneficial effects of the display panel provided by the example embodiments described above, and will not be repeated here.

[0181] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A display panel having a display area and a non-display area located on at least one side of the display area, wherein, The display panel includes: Display back panel; A touch layer assembly is disposed on the display side of the display back panel. The touch layer assembly includes a plurality of first touch units, a plurality of first touch traces, a plurality of second touch units, and a plurality of second touch traces. The first touch unit includes a plurality of first touch electrodes connected sequentially along a first direction. The second touch unit includes a plurality of second touch electrodes connected sequentially along a second direction. The first touch traces extend from the non-display area to the display area. In the display area, at least a portion of the first touch traces are connected to the non-ends of the first touch units. The second touch traces are connected to the second touch units. The first direction and the second direction intersect.

2. The display panel according to claim 1, wherein, The first touch trace includes: The first part is located in the display area and extends along the second direction, and the first part is connected to the first touch unit; The second part is connected to the first part, and the second part is located in the non-display area; Among them, the length of the first portion of the multiple first touch traces increases sequentially in the second direction along the first direction.

3. The display panel according to claim 2, wherein, The first part is located between two adjacent first touch electrodes.

4. The display panel according to claim 3, wherein, A first dummy part is provided between the first part and the first touch electrode, and the first part and the first dummy part are made of the same layer and the same material.

5. The display panel according to claim 4, wherein, A first gap is provided between the orthographic projection of the first part on the display back panel and the orthographic projection of the first dummy part on the display back panel, and the outline of the first gap is set as a curve.

6. The display panel according to claim 5, wherein, A second gap is provided between the orthographic projection of the first dummy part on the display back panel and the orthographic projection of the first touch electrode on the display back panel, and the outline of the second gap is set as a curve.

7. The display panel according to claim 6, wherein, At least a portion of the first gap is arranged parallel to at least a portion of the second gap.

8. The display panel according to claim 3, wherein, The plurality of first touch electrodes include a plurality of first touch patterns and a plurality of second touch patterns. The first touch pattern is the first touch electrode adjacent to the first portion. The second touch pattern is disposed on the side of the first touch pattern opposite to the first portion. The shape of the orthographic projection of the first touch pattern on the display back panel is a part of the shape of the orthographic projection of the second touch pattern on the display back panel.

9. The display panel according to claim 8, wherein, The shape of the orthographic projection of the first touch pattern on the display back panel is half or less than half the shape of the orthographic projection of the second touch pattern on the display back panel.

10. The display panel according to claim 9, wherein, Of the dimensions of the first touch pattern in the second direction, the one closest to the end of the first portion has the largest dimension.

11. The display panel according to claim 10, wherein, At least two of the first touch units form a group, and at least two of the first touch patterns that belong to the same group and are adjacent in the second direction are connected.

12. The display panel according to claim 8, wherein, The second touch unit is located on the side of the first touch pattern that is opposite to the first part.

13. The display panel according to claim 2, wherein, The first touch trace also includes: The second dummy part is located on the side of the first part away from the second part, and the second dummy part is disconnected from the first part.

14. The display panel according to claim 2, wherein, At least two second touch units form a group, and at least two second touch electrodes belonging to the same group and adjacent in the first direction are connected, with the first part disposed between two adjacent groups of second touch units.

15. The display panel according to any one of claims 2 to 14, wherein, The touch layer group includes: A base layer is disposed on the light-emitting side of the display back panel; The first touch layer is disposed on the side of the base layer opposite to the display back panel; A touch insulating layer is disposed on the side of the first touch layer opposite to the substrate layer, and the touch insulating layer is provided with a plurality of vias; The second touch layer is disposed on the side of the touch insulating layer opposite to the base layer, and the second touch layer includes the first touch electrode and the second touch electrode.

16. The display panel according to claim 15, wherein, The first part includes a second trace, which is disposed on the second touch layer; the touch layer group further includes: A first bridging portion is disposed on the first touch layer. The first bridging portion is connected to the second trace through a first via on the touch insulating layer, and the first bridging portion is connected to the first touch electrode through a second via on the touch insulating layer. And / or, a first extension is disposed on the second touch layer, one end of the first extension is connected to the second trace, and the other end of the first extension is connected to the first touch electrode.

17. The display panel according to claim 15, wherein, The first part includes a first trace and a second trace. The first trace is disposed on the first touch layer, and the second trace is disposed on the second touch layer. The second trace is connected to the first trace through a third via on the touch insulating layer. The touch layer group also includes: A first extension is provided on the second touch layer, one end of the first extension is connected to the second trace, and the other end of the first extension is connected to the first touch electrode. And / or, a first connection portion is disposed on the first touch layer, one end of the first connection portion is connected to the first trace, and the other end of the first connection portion is connected to the first touch electrode through a fourth via on the touch insulating layer.

18. The display panel according to claim 15, wherein, The first part includes a first trace, which is disposed on the first touch layer; the touch layer group further includes: A first connection portion is disposed on the first touch layer. One end of the first connection portion is connected to the first trace, and the other end of the first connection portion is connected to the first touch electrode through a fourth via on the touch insulating layer.

19. The display panel according to any one of claims 2 to 14, wherein, The second part includes a first segment and a second segment that are connected to each other. The width of the first segment is smaller than the width of the second segment. The orthographic projection of the first segment on the display back panel overlaps with the orthographic projection of the second touch trace on the display back panel. And / or, the second touch trace includes a third portion and a fourth portion, the fourth portion being connected to the third portion, and the width of the third portion being smaller than the width of the fourth portion. The orthographic projection of the third part on the display back panel overlaps with the orthographic projection of the first touch trace on the display back panel.

20. The display panel according to any one of claims 1 to 14, wherein, A bonding pin is provided in the non-display area for bonding a circuit board on which a touch driver chip is mounted. The display area has a first edge line, which is a straight line. The first edge line is located on one side of the display area in a second direction and is located between the display area and the bonding pin. The first touch trace extends across the first edge line to the display area.

21. The display panel according to claim 20, wherein, The second touch trace is connected to one end of the second touch unit in a second direction, and at least a portion of the second touch trace is located on the side of the first edge line away from the display area.

22. The display panel according to any one of claims 1 to 14, wherein, The length of the first touch unit in the first direction is greater than the length of the second touch unit in the second direction.

23. A display device, wherein, Includes the display panel as described in any one of claims 1 to 22.

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