Touch display device

Abstract

A touch display device comprises a display panel and a touch assembly. The display panel comprises a driving signal wire and first and second power wires, wherein the driving signal wire overlaps the first and second power wires. The touch assembly comprises a touch signal wire and a first electrode insulated from the touch signal wire; a signal having a fixed potential is input to the first electrode; the first and second power wires each have a portion overlapping both the touch signal wire and the driving signal wire; and the first electrode has a portion overlapping both the touch signal wire and a wire portion of the driving signal wire exposed between the first and second power wires.

Description

Touch display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202410494765.9, filed on April 23, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of display technology, and more specifically to a touch display device. Background Technology

[0004] Touch display devices typically include a display panel and touch components mounted on the display panel. Touch signal traces in the touch components are generally led out to the fan-out area of ​​the display panel and electrically connected to the driver chip through conductive pads located at the edge of the fan-out area of ​​the display panel. Invention Overview

[0005] In related technologies, signals in the drive signal traces often interfere with touch signals in the touch signal traces.

[0006] Embodiments of this application provide a touch display device to solve the problem of signal interference between drive signal traces and touch signal traces in related technologies.

[0007] An embodiment of this application provides a touch display device, which has a display area and a fan-out area. The touch display device includes a display panel and a touch component. The portion of the display panel located in the fan-out area includes a drive signal trace, a first power trace, and a second power trace. The film layers containing the first power trace and the second power trace are both located above the film layer containing the drive signal trace, and the drive signal trace overlaps with the first power trace and the second power trace. The portion of the touch component located in the fan-out area includes a touch signal trace and a first electrode insulated from the touch signal trace. The first electrode is configured to transmit a signal with a fixed potential. The film layers containing the touch signal trace and the first electrode are both located above the film layers containing the first power trace and the second power trace. The first power trace has a portion that overlaps with both the touch signal trace and the drive signal trace, and the second power trace also has a portion that overlaps with both the touch signal trace and the drive signal trace. The drive signal trace includes a trace portion exposed between the first power trace and the second power trace, and the first electrode has a portion that overlaps with both the touch signal trace and the trace portion.

[0008] In some embodiments, the first electrode further has a portion that overlaps with at least one of the first power trace and the second power trace.

[0009] In some embodiments, the touch signal trace includes multiple sub-touch signal lines located on the same layer and arranged side by side, and along the arrangement direction of the multiple sub-touch signal lines, the size of the first electrode is larger than the width of the touch signal trace.

[0010] In some embodiments, the touch display device further includes a grounding wire, which is electrically connected to the first electrode.

[0011] In some embodiments, the touch signal trace includes a first sub-signal line, and the film layer on which the first sub-signal line is located is located above the film layer on which the first electrode is located.

[0012] In some embodiments, the touch signal trace further includes a second sub-signal line, which overlaps with the first power trace, the second sub-signal line and the first electrode are located in the same film layer, the second sub-signal line is insulated from the first electrode, and the second sub-signal line is electrically connected to the first sub-signal line through a first connection portion that penetrates the film layer between the first sub-signal line and the second sub-signal line.

[0013] In some embodiments, the touch signal trace further includes a third sub-signal line, which overlaps with the second power trace, is located in the same film layer as the first electrode, is insulated from the first electrode, and is electrically connected to the first sub-signal line through a second connection portion that penetrates the film layer between the first sub-signal line and the third sub-signal line.

[0014] In some embodiments, the portion of the display panel located in the fan-out area includes a second electrode, the second electrode and the second power trace are located in the same film layer, the second electrode is disposed on the side of the second power trace away from the first power trace, and the second electrode is electrically connected to the second power trace, the second electrode having a portion overlapping with the drive signal trace and the touch signal trace.

[0015] In some embodiments, the width of the second electrode is greater than the width of the touch signal trace.

[0016] In some embodiments, the portion of the display panel located in the fan-out area further includes a first conductive pad and a second conductive pad. The drive signal trace is electrically connected to the first conductive pad, and the touch signal trace is electrically connected to the second conductive pad. The drive signal trace includes a bend located between the first conductive pad and the portion of the display panel located in the display area. The length of the second electrode is greater than or equal to the length of the drive signal trace from the outer edge of the portion overlapping with the second power trace to the outer edge of the bend.

[0017] In some embodiments, the portion of the display panel located in the fan-out area further includes a display driver integrated circuit, wherein both the first conductive pad and the second conductive pad are disposed on the display driver integrated circuit.

[0018] In some embodiments, at least one of the first power trace and the second power trace includes a first sub-power trace and a second sub-power trace that are disposed on different layers and connected in parallel.

[0019] In some embodiments, the signal with the fixed potential is a DC signal.

[0020] In some embodiments, the first power trace and the second power trace are disposed on the same layer.

[0021] In some embodiments, the touch display device further includes a bend region located between the display area and the fan-out area, wherein a groove is provided in the bend region.

[0022] In some embodiments, the drive signal trace includes a first sub-drive signal trace and a second sub-drive signal trace disposed on different layers.

[0023] In some embodiments, the display panel includes a substrate, a display structure layer, and an encapsulation layer stacked sequentially, and the driving signal traces are electrically connected to the display structure in the display structure layer.

[0024] In some embodiments, the display structure layer includes a driving circuit and a light-emitting element located within the display area.

[0025] In some embodiments, the encapsulation layer includes a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer stacked sequentially, wherein the first encapsulation layer and the third encapsulation layer are made of inorganic materials, and the second encapsulation layer is made of organic materials. Beneficial effects

[0026] In the touch display device provided in the embodiments of this application, the wiring portion and the touch signal wiring overlap, and the overlapping portion also overlaps with the first electrode and is isolated by the first electrode. Since a DC signal is passed through the first electrode, the DC signal cannot pass through the planar capacitor structure formed between the film layers. Therefore, the first electrode can effectively shield the part of the drive signal wiring that is not covered by the first power supply wiring and the second power supply wiring (i.e., the wiring portion), and avoid the drive signal in the wiring portion from interfering with the touch signal in the touch signal wiring, thereby improving the display and touch effect of the touch display device. Attached Figure Description

[0027] Figure 1 is a schematic diagram of a touch display device provided in some embodiments of this application;

[0028] Figure 2 is a schematic diagram of the positional relationship of some traces in a touch display device provided in some embodiments of this application;

[0029] Figure 3 is a cross-sectional view of A-A' in Figure 2;

[0030] Figure 4 is a schematic diagram of the positional relationship of some traces in a touch display device provided in some other embodiments of this application;

[0031] Figure 5 is a cross-sectional view along line B-B' in Figure 4. Modes for Carrying Out the Invention

[0032] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The described technical solutions are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0033] In the description of this application, it should be understood that the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different technical features. The terms "multiple" and similar words mean two or more, unless otherwise expressly defined.

[0034] The use of “configured to” in this application implies open and inclusive language, which does not preclude the applicability to or configuration of devices to perform additional tasks or steps. Furthermore, the use of “based on” implies openness and inclusivity, because processes, steps, calculations, or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0035] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application.

[0036] The various embodiments of this application are similar, and features from different embodiments and / or different examples can be combined with each other.

[0037] In related technologies, touch display devices typically include a display panel and touch components mounted on the display panel. Touch signal traces in the touch components are generally led out to the fan-out area of ​​the display panel and electrically connected to the driver chip via conductive pads located at the edge of the fan-out area. Because the portion of the touch signal traces in the fan-out area overlaps with the drive signal traces and power traces of the display panel, the portion of the drive signal traces not covered by the power traces will couple to the touch signal traces, causing the drive signal in the drive signal traces to interfere with the touch signal in the touch signal traces.

[0038] Based on this, some embodiments of this application provide a touch display device, as shown in FIG1, the touch display device 100 having a display area 101 and a fan-out area 102 located on one side of the display area 101.

[0039] As shown in Figures 2 to 5, the touch display device 100 includes a display panel 10 and a touch component 20.

[0040] The portion of the display panel 10 located in the fan-out area 102 includes a drive signal trace 12, a first power supply trace 151, and a second power supply trace 152. The film layers containing the first power supply trace 151 and the second power supply trace 152 are both located above the film layer containing the drive signal trace 12, and the drive signal trace 12 overlaps with the first power supply trace 151 and the second power supply trace 152. That is, the film layer containing the first power supply trace 151 is located above the film layer containing the drive signal trace 12, and the first portion of the drive signal trace 12 overlaps with the first power supply trace 151; furthermore, the film layer containing the second power supply trace 152 is located above the film layer containing the drive signal trace 12, and the second portion of the drive signal trace 12 overlaps with the second power supply trace 152.

[0041] The portion of the touch component 20 located in the fan-out region 102 includes a touch signal trace 24 and a first electrode 22 insulated from the touch signal trace 24. The first electrode 22 is configured to transmit a signal at a fixed potential (e.g., a DC signal). The film layers containing the touch signal trace 24 and the first electrode 22 are both located above the film layers containing the first power supply trace 151 and the second power supply trace 152. That is, the film layer containing the touch signal trace 24 is located above the film layer containing either the first power supply trace 151 or the second power supply trace 152, and the film layer containing the first electrode 22 is located above the film layer containing either the first power supply trace 151 or the second power supply trace 152.

[0042] As shown in Figures 2 and 4, in the thickness direction of the touch display device, the first power supply trace 151 has a portion that overlaps with both the touch signal trace 24 and the drive signal trace 12, and the second power supply trace 152 has a portion that overlaps with both the touch signal trace 24 and the drive signal trace 12.

[0043] As shown in FIG5, in the thickness direction of the touch display device, the drive signal trace 12 has a trace portion 120 exposed between the first power supply trace 151 and the second power supply trace 152, and the first electrode 22 has a portion overlapping with the touch signal trace 24 and the trace portion 120. That is, at least a portion of the first electrode 22 (e.g., a portion of the first electrode 22 or all of the first electrode 22) overlaps with the touch signal trace 24 and the trace portion 120.

[0044] With the above configuration, the wiring section 120 and the touch signal wiring 24 overlap, and the overlapping part also overlaps with the first electrode 22 and is isolated by the first electrode 22. Since a DC signal is passed through the first electrode 22, the DC signal cannot pass through the planar capacitor structure formed between the film layers. Therefore, the first electrode 22 can effectively shield the part of the drive signal wiring 12 that is not covered by the first power supply wiring 151 and the second power supply wiring 152 (i.e., the wiring section 120), and prevent the drive signal in the wiring section 120 from interfering with the touch signal in the touch signal wiring 24, thereby improving the display and touch effect of the touch display device.

[0045] It should be noted that the drive signal trace 12 includes a trace portion 120 exposed between the first power trace 151 and the second power trace 152, meaning that the orthographic projection of the trace portion 120 on the plane of the touch display device 100 does not overlap with the orthographic projections of the first power trace 151 and the second power trace 152 on the plane of the touch display device 100. In some examples, the trace portion 120 is located between the first and second portions of the drive signal trace 12.

[0046] In addition, DC signals are respectively passed through the first power line 151 and the second power line 152. The DC signals cannot pass through the planar capacitor structure formed between the film layers. Therefore, the first power line 151 and the second power line 152 can also effectively shield the drive signal line 12 and the touch signal line 24, so as to avoid the drive signal in the drive signal line 12 from interfering with the touch signal in the touch signal line 24, thereby improving the display and touch effect of the touch display device 100.

[0047] In some examples, the first power trace 151 can be a high-voltage power trace VDD, while the second power trace 152 can be a low-voltage power trace VSS; or, the first power trace 151 can be a low-voltage power trace VSS, while the second power trace 152 can be a high-voltage power trace VDD. This application is not limited in this respect.

[0048] In some examples, the first power trace 151 and the second power trace 152 can be set on the same layer or on different layers, and this application does not limit this.

[0049] In some embodiments, as shown in Figures 2 and 4, the first electrode 22 further has a portion that overlaps with at least one of the first power line 151 and the second power line 152 in the thickness direction of the touch display device.

[0050] For example, the first electrode 22 may also have a portion that overlaps with the first power supply trace 151; or, the first electrode 22 may also have a portion that overlaps with the second power supply trace 152; or, the first electrode 22 may have a portion that overlaps with both the first power supply trace 151 and the second power supply trace 152.

[0051] When the first electrode 22 also has a portion overlapping with the first power supply line 151 and the second power supply line 152, in the extension direction of the drive signal line 12, the drive signal line 12 can sequentially overlap with the first power supply line 151, the first electrode 22, and the second power supply line 152. During the transition from the first power supply line 151 to the first electrode 22, since the first electrode 22 overlaps with the first power supply line 151, the drive signal in the drive signal line 12 and the touch signal in the touch signal line 24 can form good shielding between the first power supply line 151 and the first electrode 22. Similarly, during the transition from the first electrode 22 to the second power supply line 152, since the first electrode 22 overlaps with the second power supply line 152, the drive signal in the drive signal line 12 and the touch signal in the touch signal line 24 can form good shielding between the second power supply line 152 and the first electrode 22. Therefore, the above arrangement can further improve the display and touch effects of the touch display device 100.

[0052] In some embodiments, as shown in Figures 2 and 4, the touch signal trace 24 includes multiple sub-touch signal lines arranged side by side. Along the arrangement direction of the multiple sub-touch signal lines (i.e., the width direction of the touch signal trace 24), the size of the first electrode 22 is larger than the width of the touch signal trace 24. That is, along the arrangement direction of the multiple sub-touch signal lines, the size of the first electrode 22 is larger than the distance between the outer edges of the sub-touch signal lines located at both ends.

[0053] With this configuration, along the width direction of the touch signal trace 24, the first electrode 22 can form a larger range of signal shielding for the touch signal trace 24, thereby further preventing interference between the driving signal in the driving signal trace 12 and the touch signal in the touch signal trace 24.

[0054] In some embodiments, the touch display device 100 further includes a grounding wire, which is electrically connected to the first electrode 22. This configuration allows the touch display device to be grounded using the grounding wire, and at the same time, the DC signal in the grounding wire can effectively reduce signal interference between the touch signal trace 24 and the drive signal trace 12, thereby improving the display and touch performance of the touch display device 100.

[0055] For example, the grounding wire can be located in the fan-out area 102.

[0056] In some embodiments, as shown in Figures 2 and 3, the touch signal trace 24 includes a first sub-signal line 241, and the film layer on which the first sub-signal line 241 is located is located above the film layer on which the first electrode 22 is located.

[0057] This configuration, with the first sub-signal line 241 and the first electrode 22 located on different film layers, effectively avoids unnecessary contact between the first sub-signal line 241 and the first electrode 22, thus preventing interference with signal transmission. Furthermore, the first electrode 22 is located between the first sub-signal line 241 and the drive signal trace 12, preventing interference between the touch signal in the first sub-signal line 241 and the drive signal in the drive signal trace 12.

[0058] In some embodiments, as shown in Figures 4 and 5, the touch signal trace 24 further includes a second sub-signal line 242, which overlaps with the first power trace 151. The second sub-signal line 242 and the first electrode 22 are located in the same film layer. The second sub-signal line 242 is insulated from the first electrode 22. The second sub-signal line 242 is electrically connected to the first sub-signal line 241 through a first connection portion 2401 that penetrates the film layer between the first sub-signal line 241 and the second sub-signal line 242.

[0059] With this configuration, the second sub-signal line 242 and the first sub-signal line 241 can be connected in parallel, which can effectively reduce the resistance of the first sub-signal line 241, thereby reducing the heat generated by the first sub-signal line 241 during operation.

[0060] In some embodiments, as shown in Figures 4 and 5, the touch signal trace 24 further includes a third sub-signal line 243. The third sub-signal line 243 overlaps with the second power supply trace 152. The third sub-signal line 243 and the first electrode 22 are located in the same film layer. The third sub-signal line 243 is insulated from the first electrode 22. The third sub-signal line 243 is electrically connected to the first sub-signal line 241 through a second connection portion 2402 that penetrates the film layer between the first sub-signal line 241 and the third sub-signal line 243.

[0061] With this configuration, the third sub-signal line 243 and the first sub-signal line 241 can be connected in parallel, which can effectively reduce the resistance of the first sub-signal line 241, thereby reducing the heat generated by the first sub-signal line 241 during operation.

[0062] In some examples, the first electrode 22 may be located between the third sub-signal line 243 and the second sub-signal line 242 and insulated from both.

[0063] It is worth noting that the aforementioned first sub-signal line 241 may be only one of multiple sub-touch signal lines arranged side by side on the same layer. The figure only shows one of the multiple first sub-signal lines 241 located on the same layer. Similarly, the figure only shows one second sub-signal line 242 and one third sub-signal line 243, which does not limit the number of second sub-signal lines 242 and third sub-signal lines 243.

[0064] In some embodiments, as shown in FIG4, the portion of the display panel 10 located in the fan-out region 102 includes a second electrode 153. The second electrode 153 and the second power line 152 are located in the same film layer. The second electrode 153 is disposed on the side of the second power line 152 away from the first power line 151, and the second electrode 153 is electrically connected to the second power line 152. The second electrode 153 has a portion that overlaps with the drive signal line 12 and the touch signal line 24. That is, the second electrode 153, the drive signal line 12, and the touch signal line 24 have overlapping portions along the thickness direction of the touch display device 100.

[0065] Since the second electrode 153 is electrically connected to the second power supply line 152, the same DC signal as the second power supply line 152 is passed through the second electrode 153. In this way, the second electrode 153 can be used to shield the drive signal line 12 and the touch signal line 24 at the parts where they overlap with the second electrode 153, thereby further improving the display and touch effects of the touch display device 100.

[0066] In some embodiments, as shown in FIG4, the width of the second electrode 153 (that is, the dimension of the second electrode 153 in the width direction of the touch signal trace 24) is greater than the width of the touch signal trace 24.

[0067] With this configuration, along the width direction of the touch signal trace 24, the second electrode 153 can form a larger range of signal shielding for the touch signal trace 24, thereby further preventing interference between the driving signal in the driving signal trace 12 and the touch signal in the touch signal trace 24.

[0068] In some embodiments, as shown in Figures 2 and 4, the portion of the display panel 10 located in the fan-out area 102 further includes a first conductive pad 161 and a second conductive pad 162. The drive signal trace 12 is electrically connected to the first conductive pad 161, and the touch signal trace 24 is electrically connected to the second conductive pad 162. The drive signal trace 12 includes a bend located between the first conductive pad 161 and the portion of the display panel 10 located in the display area 101. That is, the portion of the drive signal trace 12 outside the display area 101 is the bend.

[0069] The length of the second electrode 153 is greater than or equal to the length of the drive signal trace 12 from the outer edge of the portion overlapping with the second power supply trace 152 to the outer edge of the bend.

[0070] The outer edge of the overlapping portion of the drive signal trace 12 and the second power trace 152 refers to the edge of the overlapping portion that is away from the first power trace 151; while the outer edge of the bend can refer to the edge where the drive signal trace 12 and the first conductive pad 161 are connected.

[0071] With this configuration, the second electrode 153 can cover a large area of ​​the drive signal trace 12, thereby further reducing the signal interference between the touch signal trace 24 and the drive signal trace 12, and thus improving the display and touch effects of the touch display device 100.

[0072] In some embodiments, as shown in FIG4, at least one of the first power trace 151 and the second power trace 152 includes a first sub-power trace 1511 and a second sub-power trace 1512 that are disposed on different layers and connected in parallel. By setting the first sub-power trace 1511 and the second sub-power trace 1512 in parallel, the resistance of the first power trace 151 or the second power trace 152 can be effectively reduced, thereby reducing the heat generated by the first power trace 151 or the second power trace 152 during operation.

[0073] It should be noted that Figure 4 only shows the structure of the first power supply trace 151 as the first sub-power supply trace 1511 and the second sub-power supply trace 1512. When the second power supply trace 152 also includes the first sub-power supply trace and the second sub-power supply trace that are set on different layers and connected in parallel, the structure of the second power supply trace 152 can be set with reference to the structure of the first power supply trace 151. For the sake of simplicity, it will not be described in detail in the specification.

[0074] Furthermore, Figures 2 and 4 only show the drive signal trace 12, the first power supply trace 151, the second power supply trace 152, the first electrode 22, and the touch signal trace 24, etc., and do not show the insulating layer between adjacent signal lines or adjacent metal layers. This part is common knowledge that can be obtained by those skilled in the art, so it is not described in detail.

[0075] In some embodiments, as shown in Figures 2 and 4, the portion of the display panel 10 located in the fan-out region 102 further includes a Touch and Display Driver Integration (TDDI) circuit 30. The first conductive pad 161 and the second conductive pad 162 are both disposed on the TDDI circuit 30, thus connecting the TDDI circuit 30 to the drive signal traces and touch signal traces, respectively. Using the TDDI circuit 30 for display and touch driving control facilitates the reduction of the display panel's thickness, simplifies the manufacturing process, reduces costs, and improves the display panel's performance.

[0076] As exemplarily shown in Figures 2 and 4, the touch display device also has a bending area 103 located between the fan-out area 102 and the display area 101. The bending area 103 may be provided with a groove, which allows the fan-out area 102 to be bent to the back of the touch display device.

[0077] In some embodiments, as shown in Figures 2 to 5, the display panel 10 may include a substrate 11, a display structure layer, and an encapsulation layer 14 stacked sequentially. The substrate 11 is located in the display area 101 and the fan-out area 102.

[0078] The display structure in the display structure layer is located in the display area 101, and the driving signal trace 12 is electrically connected to the display structure in the display structure layer. For example, the display structure may include multiple pixel units, and the driving signal trace 12 can provide driving signals to the pixel units to drive the corresponding pixel units to emit light, thereby realizing the display function of the display panel 10.

[0079] In some examples, as shown in Figures 3 and 5, the substrate 11 may include a stacked flexible material layer 111 and an inorganic material layer 112. The flexible material layer 111 may be made of PI (Polyimide) material.

[0080] In some examples, the display structure layer may include driving circuitry and light-emitting elements located in the display area 101.

[0081] In some examples, the driving circuit includes multiple transistors forming a pixel driving circuit and at least one storage capacitor. The pixel driving circuit can be designed as 2T1C (i.e., two thin-film transistors and one capacitor), 3T1C (i.e., three thin-film transistors and one capacitor), or 7T1C (i.e., seven thin-film transistors and one capacitor). The driving circuit located in the display area can include: a first insulating layer disposed on a substrate, an active layer disposed on the first insulating layer, a second insulating layer covering the active layer, a first gate metal layer disposed on the second insulating layer, a third insulating layer covering the first gate metal layer, a second gate metal layer disposed on the third insulating layer, a fourth insulating layer covering the second gate metal layer, and a source / drain metal layer disposed on the fourth insulating layer. The active layer may include at least the first active layer, the first gate metal layer may include at least a first gate electrode and a first capacitor electrode, the second gate metal layer may include at least a second capacitor electrode, and the source / drain metal layer may include at least a source electrode and a drain electrode. The first active layer, the first gate electrode, the source electrode, and the drain electrode constitute a transistor, while the first capacitor electrode and the second capacitor electrode constitute a storage capacitor.

[0082] In some embodiments, as shown in FIG3, the drive signal trace 12 may include a first sub-drive signal trace 121 and a second sub-drive signal trace 122 disposed on different layers.

[0083] By setting the first sub-driving signal trace 121 and the second sub-driving signal trace 122, the pixel driving circuit can be controlled more precisely, thereby enabling the touch display device to display more precisely.

[0084] In some examples, the first sub-drive signal trace 121 can be disposed on the same layer as the first gate metal layer, and the second sub-drive signal trace 122 can be disposed on the same layer as the second gate metal layer. Of course, the third insulating layer 131 covering the first gate metal layer also covers the first sub-drive signal trace 121, and the fourth insulating layer 132 covering the second gate metal layer also covers the second sub-drive signal trace 122.

[0085] In some examples, a planarization layer is further provided between the driving circuit and the light-emitting element. The light-emitting element may include a first electrode, a pixel definition layer, an organic light-emitting layer, and a second electrode. The first electrode is disposed on the planarization layer and connected to the drain electrode of a transistor via a via. The pixel definition layer is disposed on the first electrode and the planarization layer, and a pixel opening is provided on the pixel definition layer, exposing the first electrode. The organic light-emitting layer is at least partially disposed within the pixel opening, and is located between the first electrode and the second electrode. Under the voltage drive of the first electrode and the second electrode, the light-emitting properties of the organic material in the organic light-emitting layer can be utilized to make the organic light-emitting layer emit light at the required grayscale.

[0086] The encapsulation layer 14 is located on the display structure layer. For example, the encapsulation layer 14 covers the display structure layer to prevent the driving circuit, light-emitting element, and driving signal trace 12 in the display structure layer from being corroded by external moisture.

[0087] For example, as shown in Figures 3 and 5, the encapsulation layer 14 may include a first encapsulation layer 141, a second encapsulation layer 142, and a third encapsulation layer 143 stacked together. The first encapsulation layer 141 and the third encapsulation layer 143 may be made of inorganic materials, while the second encapsulation layer 142 may be made of organic materials. The second encapsulation layer 142 is disposed between the first encapsulation layer 141 and the third encapsulation layer 143, ensuring that external moisture cannot enter the light-emitting elements in the display structure layer. However, this application is not limited in this respect. For example, the encapsulation layer 14 may adopt a five-layer stacked structure of inorganic / organic / inorganic / organic / inorganic. As another example, the first encapsulation layer 141, the second encapsulation layer 142, and the third encapsulation layer 143 in the encapsulation layer 14 may all be made of organic materials.

[0088] The touch component 20 is located on the encapsulation layer 14. The touch component 20 includes a touch structure layer located in the display area 101 and touch signal lines 24 and a first electrode 22 located in the fan-out area 102.

[0089] In some examples, as shown in Figures 3 and 5, the touch component 20 further includes a fifth insulating layer 21, on which the first electrode 22, the second sub-signal line 242 and the third sub-signal line 243 are all located. A sixth insulating layer 23 is provided between the first electrode 22 and the first sub-signal line 241, and a seventh insulating layer 25 is provided above the first sub-signal line 241.

[0090] In some examples, as shown in FIG1, the touch component 20 can be a mutual capacitive structure. The touch structure layer 24 may include a plurality of first touch units 241 and a plurality of second touch units 242 located in the display area 101. The first touch units 241 have a linear shape extending along a first direction D1, and the plurality of first touch units 241 are arranged sequentially along a second direction D2. The second touch units 242 have a linear shape extending along the second direction D2, and the plurality of second touch units 242 are arranged sequentially along the first direction D1, where the first direction D1 intersects the second direction D2. Each first touch unit 241 includes a plurality of first touch electrodes 2411 and a first connecting portion 2412 arranged sequentially along the first direction D1, with the first touch electrodes 2411 and the first connecting portion 2412 alternately arranged and sequentially connected. Each second touch unit 242 includes a plurality of second touch electrodes arranged sequentially along the second direction D2, with the plurality of second touch electrodes spaced apart, and adjacent second touch electrodes connected to each other through a second connecting portion.

[0091] In some examples, the film layer where the second connection portion is located is different from the film layer where the first touch electrode 2411 and the second touch electrode are located. The first touch electrode 2411 and the second touch electrode are alternately arranged on a third direction D3, which intersects with the first direction D1 and the second direction D2.

[0092] In some examples, the first touch electrode may be a driving electrode, while the second touch electrode may be a sensing electrode. Alternatively, the first touch electrode may be a sensing electrode, while the second touch electrode may be a driving electrode.

[0093] In some examples, the first touch electrode 2411 and the second touch electrode can be in the form of transparent conductive electrodes. Exemplarily, the first touch electrode 2411 and the second touch electrode can be in the form of a metal mesh, formed by multiple interwoven metal wires. The metal mesh includes multiple mesh patterns, each a polygon composed of multiple metal wires. The metal mesh format of the first touch electrode 2411 and the second touch electrode has advantages such as low resistance, small thickness, and fast response speed.

[0094] In summary, although the present application discloses the preferred embodiments as described above, the above preferred embodiments are not intended to limit the present application. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application is based on the scope defined by the claims.

Claims

1. A touch display device, wherein, The touch display device has a display area and a fan-out area, and the touch display device includes: The display panel, wherein the portion of the display panel located in the fan-out area includes a drive signal trace, a first power trace, and a second power trace, wherein the film layers containing the first power trace and the second power trace are both located above the film layer containing the drive signal trace, and the drive signal trace overlaps with the first power trace and the second power trace; and A touch component, wherein the portion of the touch component located in the fan-out area includes a touch signal trace and a first electrode insulated from the touch signal trace, the first electrode being configured to transmit a signal at a fixed potential, and the film layers containing the touch signal trace and the first electrode are both located on the film layers containing the first power trace and the second power trace. The first power trace has a portion that overlaps with both the touch signal trace and the drive signal trace, and the second power trace has a portion that overlaps with both the touch signal trace and the drive signal trace. The drive signal trace includes a trace portion exposed between the first power trace and the second power trace, and the first electrode has a portion that overlaps with both the touch signal trace and the trace portion.

2. The touch display device according to claim 1, wherein, The first electrode also has a portion that overlaps with at least one of the first power trace and the second power trace.

3. The touch display device according to claim 1, wherein, The touch signal trace includes multiple sub-touch signal lines located on the same layer and arranged side by side. Along the arrangement direction of the multiple sub-touch signal lines, the size of the first electrode is larger than the width of the touch signal trace.

4. The touch display device according to claim 1, wherein, The touch display device also includes a grounding wire, which is electrically connected to the first electrode.

5. The touch display device according to any one of claims 1-4, wherein, The touch signal trace includes a first sub-signal line, and the film layer on which the first sub-signal line is located is located above the film layer on which the first electrode is located.

6. The touch display device according to claim 5, wherein, The touch signal trace also includes a second sub-signal line, which overlaps with the first power trace. The second sub-signal line and the first electrode are located in the same film layer. The second sub-signal line is insulated from the first electrode. The second sub-signal line is electrically connected to the first sub-signal line through a first connecting portion that passes through the film layer between the first sub-signal line and the second sub-signal line.

7. The touch display device according to claim 6, wherein, The touch signal trace also includes a third sub-signal line, which overlaps with the second power trace. The third sub-signal line and the first electrode are located in the same film layer. The third sub-signal line is insulated from the first electrode. The third sub-signal line is electrically connected to the first sub-signal line through a second connecting portion that passes through the film layer between the first sub-signal line and the third sub-signal line.

8. The touch display device according to claim 7, wherein, The portion of the display panel located in the fan-out area includes a second electrode. The second electrode and the second power trace are located in the same film layer. The second electrode is disposed on the side of the second power trace away from the first power trace, and the second electrode is electrically connected to the second power trace. The second electrode has a portion that overlaps with the drive signal trace and the touch signal trace.

9. The touch display device according to claim 8, wherein, The width of the second electrode is greater than the width of the touch signal trace.

10. The touch display device according to claim 8, wherein, The portion of the display panel located in the fan-out area further includes a first conductive pad and a second conductive pad. The drive signal trace is electrically connected to the first conductive pad, and the touch signal trace is electrically connected to the second conductive pad. The drive signal trace includes a bend, which is located between the first conductive pad and the portion of the display panel located in the display area. The length of the second electrode is greater than or equal to the length of the drive signal trace from the outer edge of the portion overlapping with the second power trace to the outer edge of the bend.

11. The touch display device according to claim 10, wherein, The portion of the display panel located in the fan-out area also includes a display driver integrated circuit, and both the first conductive pad and the second conductive pad are disposed on the display driver integrated circuit.

12. The touch display device according to any one of claims 1-4, wherein, The first power trace includes a first sub-power trace and a second sub-power trace that are arranged on different layers and connected in parallel.

13. The touch display device according to any one of claims 1-4, wherein, The second power trace includes a third sub-power trace and a fourth sub-power trace that are arranged on different layers and connected in parallel.

14. The touch display device according to any one of claims 1-4, wherein, The first power trace includes a first sub-power trace and a second sub-power trace that are arranged on different layers and connected in parallel; and the second power trace includes a third sub-power trace and a fourth sub-power trace that are arranged on different layers and connected in parallel.

15. The touch display device according to claim 1, wherein, The signal at the fixed potential is a DC signal.

16. The touch display device according to claim 1, wherein, The first power trace and the second power trace are arranged on the same layer.

17. The touch display device according to claim 1, wherein, The touch display device also has a bent area located between the display area and the fan-out area, and the bent area has a groove.

18. The touch display device according to claim 1, wherein, The drive signal traces include a first sub-drive signal trace and a second sub-drive signal trace that are configured in different layers.

19. The touch display device according to claim 1, wherein, The display panel includes a substrate, a display structure layer, and an encapsulation layer stacked sequentially, and the driving signal traces are electrically connected to the display structure in the display structure layer.

20. The touch display device according to claim 19, wherein, The display structure layer includes a driving circuit and a light-emitting element located within the display area.

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