Display panel and electronic device

Abstract

The present application provides a display panel and an electronic device. A first display substrate of the display panel comprises a driving apparatus layer, a first insulating layer and a first touch layer which are stacked; the first touch layer is provided with a first touch electrode; and the first touch electrode is electrically connected to a first touch driving apparatus of the driving apparatus layer by means of a first via hole passing through the first insulating layer, so that the problem of the presence of a touch border when an external capacitive touch scheme is adopted for existing large-screen display is mitigated.

Description

Display panels and electronic devices Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and an electronic device. Background Art

[0002] With the development of display technology, large-screen displays have gained widespread application, for example, in shopping malls, conference rooms, classrooms, and other settings. Currently, most large-screen display touch solutions on the market use infrared touch. Infrared touch is low-cost and easy to install. However, due to the characteristics of the infrared transmitter and receiver tubes, the bezels of large-screen displays using infrared touch are raised by 13.6mm, resulting in a poor appearance and preventing the realization of a fully flat display. To meet the needs of the high-end education market and achieve a fully flat display, the related technology uses external capacitive touch solutions. However, external capacitive touch solutions have a touch border, which is not conducive to achieving a full-screen display. SUMMARY OF THE INVENTION

[0003] The present application provides a display panel and an electronic device to alleviate the technical problem of a touch frame when an external capacitive touch solution is used in existing large-screen displays.

[0004] To solve the above problems, the technical solutions provided by this application are as follows:

[0005] In a first aspect, an embodiment of the present application provides a display panel, comprising at least one first display substrate, wherein the first display substrate comprises:

[0006] a first insulating layer;

[0007] A driving device layer is provided on one side of the first insulating layer, and the driving device layer includes a first touch driving device and a first light-emitting driving device;

[0008] a first touch layer, disposed on a side of the first insulating layer away from the driver device layer, the first touch layer being provided with first touch electrodes, the first touch electrodes being electrically connected to the first touch driver device;

[0009] a light-emitting device binding layer, disposed on a side of the first touch layer away from the driver device layer, the light-emitting device binding layer being provided with a binding electrode, the binding electrode being electrically connected to the first light-emitting driver device;

[0010] a light emitting device, disposed on a side of the light emitting device binding layer away from the first touch layer and bonded to the binding electrode;

[0011] Among them, the first display substrate also includes a plurality of first via holes, each of the first via holes penetrates the first insulating layer, the first touch electrode includes an electrode portion and a connecting portion, the electrode portion is located on a side of the first insulating layer away from the driving device layer, the connecting portion is located in the first via hole, and the electrode portion is electrically connected to the first touch driving device through the connecting portion.

[0012] In a second aspect, an embodiment of the present application further provides an electronic device, comprising a display panel, wherein the display panel comprises at least one first display substrate, wherein the first display substrate comprises:

[0013] a first insulating layer;

[0014] A driving device layer is provided on one side of the first insulating layer, and the driving device layer includes a first touch driving device and a first light-emitting driving device;

[0015] a first touch layer, disposed on a side of the first insulating layer away from the driver device layer, the first touch layer being provided with first touch electrodes, the first touch electrodes being electrically connected to the first touch driver device;

[0016] a light-emitting device binding layer, disposed on a side of the first touch layer away from the driver device layer, the light-emitting device binding layer being provided with a binding electrode, the binding electrode being electrically connected to the first light-emitting driver device;

[0017] a light emitting device, disposed on a side of the light emitting device binding layer away from the first touch layer and bonded to the binding electrode;

[0018] Among them, the first display substrate also includes a plurality of first via holes, each of the first via holes penetrates the first insulating layer, the first touch electrode includes an electrode portion and a connecting portion, the electrode portion is located on a side of the first insulating layer away from the driving device layer, the connecting portion is located in the first via hole, and the electrode portion is electrically connected to the first touch driving device through the connecting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] FIG1 is a schematic diagram of a top view of the structure of a display panel provided in an embodiment of the present application.

[0021] FIG. 2 is a schematic cross-sectional view of the first display substrate in FIG. 1 .

[0022] FIG. 3 is a schematic top view of the structure of the first touch layer in FIG. 2 .

[0023] FIG. 4 is another schematic top view of the structure of the first touch layer in FIG. 2 .

[0024] FIG. 5 is a schematic cross-sectional view of the second display substrate in FIG. 1 .

[0025] FIG. 6 is a schematic top view of the second touch layer in FIG. 5 .

[0026] FIG. 7 is a schematic diagram of another cross-sectional structure of the first display substrate in FIG. 1 .

[0027] FIG. 8 is a schematic diagram of another cross-sectional structure of the first display substrate in FIG. 1 . Modes for Carrying Out the Invention

[0028] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in this application, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and areas is exaggerated for clarity of understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited to this.

[0029] In view of the technical problem of touch border when using external capacitive touch solution in existing large-screen displays, the present application provides a display panel and electronic device to solve the problem.

[0030] An embodiment of the present application provides a display panel, which includes at least one first display substrate, wherein the first display substrate includes:

[0031] a first insulating layer;

[0032] A driving device layer is provided on one side of the first insulating layer, and the driving device layer includes a first touch driving device and a first light-emitting driving device;

[0033] a first touch layer, disposed on a side of the first insulating layer away from the driver device layer, the first touch layer being provided with first touch electrodes, the first touch electrodes being electrically connected to the first touch driver device;

[0034] a light-emitting device binding layer, provided on a side of the first touch layer away from the driver device layer, the light-emitting device binding layer being provided with a binding electrode, the binding electrode being electrically connected to the first light-emitting driver device; and

[0035] a light emitting device, disposed on a side of the light emitting device binding layer away from the first touch layer and bonded to the binding electrode;

[0036] Among them, the first display substrate also includes a plurality of first via holes, each of the first via holes penetrates the first insulating layer, the first touch electrode includes an electrode portion and a connecting portion, the electrode portion is located on a side of the first insulating layer away from the driving device layer, the connecting portion is located in the first via hole, and the electrode portion is electrically connected to the first touch driving device through the connecting portion.

[0037] In one embodiment, the first touch electrodes include first drive electrodes and first sensing electrodes, which are arranged in the same layer. The first touch layer further includes a bridging electrode, and the first drive electrodes or the first sensing electrodes are bridged by the bridging electrode. The bridging electrode is located on a side of the first drive electrodes and the first sensing electrodes away from the drive device layer.

[0038] In one embodiment, the first touch electrode includes a first driving electrode and a first sensing electrode, the first driving electrode includes a driving electrode portion and a driving connection portion, and the first sensing electrode includes a sensing electrode portion and a sensing connection portion;

[0039] The first display substrate further includes a second insulating layer, the second insulating layer being located on a side of the first insulating layer away from the driving device layer, the driving electrode portion being located on a side of the second insulating layer away from the first insulating layer, and the sensing electrode portion being located on a side of the second insulating layer close to the first insulating layer;

[0040] The first via hole includes a first sub-hole and a second sub-hole, the first sub-hole passes through the second insulating layer and the first insulating layer, and the second sub-hole passes through the first insulating layer. The driving connection portion is located in the first sub-hole, and the driving electrode portion is electrically connected to the first touch driver device through the driving connection portion; the sensing connection portion is located in the second sub-hole, and the sensing electrode portion is electrically connected to the first touch driver device through the sensing connection portion.

[0041] In one embodiment, the line width of the first driving electrodes and the first sensing electrodes ranges from 30 microns to 100 microns, the line spacing between adjacent first driving electrodes is greater than or equal to 50 microns, and the line spacing between adjacent first sensing electrodes is greater than or equal to 50 microns.

[0042] In one embodiment, the first display substrate further includes:

[0043] a signal line layer, disposed on a side of the first insulating layer close to the first touch layer, the signal line layer including signal traces electrically connected between the first light-emitting driver and the binding electrode;

[0044] a third insulating layer, disposed between the signal line layer and the first touch control layer; and

[0045] a fourth insulating layer, provided between the first touch control layer and the light emitting device binding layer;

[0046] Among them, the first display substrate also includes a plurality of second vias and third vias, the second vias penetrate the fourth insulating layer, the first touch layer and the third insulating layer, the third vias penetrate the first insulating layer, the binding electrodes are electrically connected to the signal traces through the second vias, and the signal traces are electrically connected to the first light-emitting driver device through the third vias.

[0047] In one embodiment, the first display substrate further includes:

[0048] a first shielding layer, disposed on a side of the third insulating layer away from the signal line layer;

[0049] a fifth insulating layer, disposed between the first shielding layer and the first touch layer;

[0050] a second shielding layer, disposed on a side of the fourth insulating layer away from the first touch layer;

[0051] a sixth insulating layer, provided between the second shielding layer and the light-emitting device binding layer;

[0052] Wherein, the first shielding layer and the second shielding layer are both at a constant potential.

[0053] In one embodiment, the first shielding layer, the second shielding layer, the signal line layer, and the first touch electrode are made of the same material.

[0054] In one embodiment, the display panel further includes a plurality of second display substrates, the plurality of second display substrates are spliced ​​together, and the first display substrate is located at a splicing position between two adjacent second display substrates.

[0055] In one embodiment, the second display substrate includes a light-emitting substrate and a second touch layer located on the light-emitting side of the light-emitting substrate, the second touch layer is provided with a second touch electrode and a touch trace located on a side of the second touch electrode away from the first display substrate, and each of the touch traces is electrically connected to one of the second touch electrodes.

[0056] An embodiment of the present application further provides an electronic device, which includes the display panel of one of the aforementioned embodiments.

[0057] In the display panel and electronic device provided in the present application, the display panel includes at least one first display substrate, the first display substrate includes a stacked driving device layer, a first insulating layer, a first touch layer, a light-emitting device binding layer and a light-emitting device, the first touch layer is provided with a first touch electrode, and the first touch electrode is electrically connected to the first touch driving device through a first via hole penetrating the first insulating layer. In this way, by integrating the touch layer in the first display substrate and punching holes in the first display substrate to directly electrically connect the touch electrode of the touch layer with the first touch driving device, the touch layer does not have a touch border, which solves the problem of the touch border existing when the existing large-screen display adopts an external capacitive touch solution.

[0058] The display panel and electronic device of the present application will be described in detail below with reference to the accompanying drawings and specific implementations.

[0059] Please refer to Figures 1 to 6. Figure 1 is a schematic diagram of a top view of the display panel provided in an embodiment of the present application. Figure 2 is a schematic diagram of a cross-sectional structure of the first display substrate in Figure 1. Figure 3 is a schematic diagram of a top view of the first touch layer in Figure 2. Figure 4 is another schematic diagram of a top view of the first touch layer in Figure 2. Figure 5 is a schematic diagram of a cross-sectional structure of the second display substrate in Figure 1. Figure 6 is a schematic diagram of a top view of the second touch layer in Figure 5. Referring to Figure 1, the display panel 100 is a spliced ​​display panel 100 to achieve a large-screen display of a large size. The display panel 100 includes at least one first display substrate 1 and a plurality of second display substrates 2. The plurality of second display substrates 2 are spliced ​​with each other. The first display substrate 1 is located at the splicing location of two adjacent second display substrates 2. A splicing seam is formed at the splicing location. By arranging the first display substrate 1 within the splicing seam, the splicing seam can be eliminated.

[0060] It should be noted that the first display substrate 1 is disposed within the joint seam. Although this can eliminate the joint seam, when the first display substrate 1 uses a red touch or external capacitive touch, a touch border will inevitably exist on the first display substrate 1. The area where the touch border is located cannot be used for display. This means that there is still an area where the joint seam cannot be displayed, and the joint seam cannot be completely eliminated. To this end, the present application provides a display panel 100 that solves the problem of the touch border by improving the touch solution of the first display substrate 1.

[0061] 1 , the embodiment of the present application uses the example of the display panel 100 including one first display substrate 1 and two second display substrates 2, but the present application is not limited thereto. The display panel 100 of the present application may further include more first display substrates 1 and more second display substrates 2. Of course, in some embodiments, the display panel 100 of the present application may further include only one first display substrate 1.

[0062] The display panel 100 includes a first display area AA1, a second display area AA2, and a first non-display area NA1 and a second non-display area NA2 located on either side of the second display area AA2. The first display area AA1 is located between two adjacent second display areas AA2, and the first non-display area NA1 is located on the side of the second display area AA2 away from the first display area AA1. The first display substrate 1 is disposed corresponding to the first display area AA1, and the second display substrate 2 is disposed corresponding to the second display area AA2 and the first non-display area NA1 and the second non-display area NA2. In other words, the first display substrate 1 includes the first display area AA1, and the second display substrate 2 includes the second display area AA2, the first non-display area NA1, and the second non-display area NA2.

[0063] The first display area AA1 and the second display area AA2 are both used for displaying images, and the first non-display area NA1 and the second non-display area NA2 can be used to set various wiring, etc. The second non-display area NA2 is also used to connect to an external driving circuit. For example, the display panel 100 also includes a chip on film (COF) 3 and a printed circuit board (PCB) 4. The second non-display area NA2 is provided with a binding circuit. The binding circuit is electrically connected to the PCB 4 through the chip on film 3, thereby achieving electrical connection between the second display substrate 2 and the external circuit.

[0064] The structures of the first display substrate 1 and the second display substrate 2 will be described in detail below.

[0065] 2 , the first display substrate 1 includes a first insulating layer 11, a driver device layer 20, a first touch layer 30, a light-emitting device binding layer 40, and a light-emitting device 50. The driver device layer 20 is located on one side of the first insulating layer 11 and includes a first touch driver device 21 and a first light-emitting driver device 22. The first touch driver device 21 includes a touch integrated circuit (IC), and the first light-emitting driver device 22 includes a light-emitting driver integrated circuit (IC).

[0066] The first touch layer 30 is disposed on a side of the first insulating layer 11 away from the driver device layer 20. The first touch layer 30 is provided with a first touch electrode 31, and the first touch electrode 31 is electrically connected to the first touch driver device 21. Specifically, the first display substrate 1 further includes a plurality of first via holes 111, each of which penetrates the first insulating layer 11. The first touch electrode 31 includes an electrode portion 311 and a connecting portion 312. The electrode portion 311 is located on a side of the first insulating layer 11 away from the driver device layer 20, and the connecting portion 312 is located within the first via hole 111. The electrode portion 311 is electrically connected to the first touch driver device 21 via the connecting portion 312.

[0067] The light-emitting device binding layer 40 is disposed on a side of the first touch layer 30 away from the driver device layer 20. The light-emitting device binding layer 40 is provided with a binding electrode 41, which is electrically connected to the first light-emitting driver device 22. The light-emitting device 50 is disposed on a side of the light-emitting device binding layer 40 away from the first touch layer 30 and is bonded to the binding electrode 41. The first light-emitting driver device 22 is used to drive the light-emitting device 50 to emit light. The light-emitting device 50 includes at least one of a light-emitting diode (LED), a micro-LED, or a sub-millimeter light-emitting diode (Mini-LED). Optionally, the first display substrate 1 can be formed by binding the light-emitting device 50 to a printed circuit board (PCB) 4, i.e., the first display substrate 1 is a PCB-based LED light-emitting substrate.

[0068] In this way, by integrating the first touch layer 30 within the first display substrate 1 and directly electrically connecting the first touch electrodes 31 of the first touch layer 30 to the first touch driver 21 through a hole in the first display substrate 1, the first touch layer 30 has no touch border, thus resolving the problem of touch borders existing in large-screen displays using external capacitive touch solutions. Furthermore, since the first display substrate 1 has no touch border, when the first display substrate 1 is placed at the seam of the adjacent second display substrate 2, the entire seam can be used for display, thereby completely eliminating the seam and achieving a zero-seam display panel 100.

[0069] Next, how to realize the electrical connection between the first touch electrode 31 and the first touch driver 21 and how to realize the electrical connection between the light emitting device 50 and the first light emitting driver 22 will be described in detail.

[0070] Continuing with Figure 2 , the first touch electrodes 31 include first drive electrodes 31T and first sensing electrodes 31R. The first drive electrodes 31T include a drive electrode portion 311T and a drive connection portion 312T, while the first sensing electrodes 31R include a sensing electrode portion 311R and a sensing connection portion 312R. The drive electrode portion 311T and the sensing electrode portion 311R are located on different layers. For example, the first display substrate 1 further includes a second insulating layer 12, which is located on a side of the first insulating layer 11 away from the drive device layer 20. The drive electrode portion 311T is located on a side of the second insulating layer 12 away from the first insulating layer 11, while the sensing electrode portion 311R is located on a side of the second insulating layer 12 closer to the first insulating layer 11.

[0071] The first via hole 111 includes a first sub-hole 1111 and a second sub-hole 1112. The first sub-hole 1111 passes through the second insulating layer 12 and the first insulating layer 11, and the second sub-hole 1112 passes through the first insulating layer 11. The driving connection portion 312T is located within the first sub-hole 1111. The driving electrode portion 311T is electrically connected to the first touch driver device 21 via the driving connection portion 312T. The sensing connection portion 312R is located within the second sub-hole 1112. The sensing electrode portion 311R is electrically connected to the first touch driver device 21 via the sensing connection portion 312R.

[0072] Furthermore, the first display substrate 1 further includes a signal line layer 60, a third insulating layer 13, and a fourth insulating layer 14. The signal line layer 60 is disposed on a side of the first insulating layer 11 near the first touch layer 30. The signal line layer 60 includes a signal trace 61, which is electrically connected between the first light-emitting driver device 22 and the binding electrode 41. The third insulating layer 13 is disposed between the signal line layer 60 and the first touch layer 30 to isolate the signal line layer 60 from the first touch layer 30. The fourth insulating layer 14 is disposed between the first touch layer 30 and the light-emitting device binding layer 40 to isolate the first touch layer 30 from the light-emitting device binding layer 40.

[0073] Optionally, the first insulating layer 11, the second insulating layer 12, the third insulating layer 13, and the fourth insulating layer 14 are made of the same material, such as resin. The signal line layer 60 and the first touch electrodes 31 of the first touch layer 30 are also made of the same material, such as copper.

[0074] The first display substrate 1 also includes a plurality of second vias 112 and third vias 113. The second vias 112 penetrate the fourth insulating layer 14, the first touch layer 30 and the third insulating layer 13. The third vias 113 penetrate the first insulating layer 11. The binding electrode 41 is electrically connected to the signal trace 61 through the second vias 112. The signal trace 61 is electrically connected to the first light-emitting driver 22 through the third vias 113.

[0075] The signal trace 61 includes a first signal trace 61S and a second signal trace 61D that are insulated from each other. The binding electrode 41 includes a first binding electrode 41S and a second binding electrode 41D that are insulated from each other. The first signal trace 61S is electrically connected to the first binding electrode 41S, and the second signal trace 61D is electrically connected to the second binding electrode 41D. The first signal trace 61S is used to provide a positive signal to the light-emitting device 50, and the second signal trace 61D is used to provide a negative signal to the light-emitting device 50.

[0076] It should be noted that when the second via 112 passes through the first touch layer 30, the first touch electrode 31 of the first touch layer 30 avoids the second via 112, preventing the second via 112 from passing through the first touch electrode 31 and thereby affecting the touch performance of the first touch layer 30. For example, if the first drive electrodes 31T and the first sensing electrodes 31R of the first touch layer 30 are insulated and arranged in a grid, the second via 112 can pass through the grid formed by the first drive electrodes 31T and the first sensing electrodes 31R.

[0077] Specifically, the first drive electrodes 31T extend along a first direction X and are arranged at intervals along a second direction Y. The first sensing electrodes 31R extend along the second direction Y and are arranged at intervals along the first direction X, so that the first drive electrodes 31T and the first sensing electrodes 31R are insulated and intersected to form a grid. The first direction X and the second direction Y are both parallel to the plane of the first insulating layer 11, and the first direction X and the second direction Y intersect at an angle, for example, 90 degrees, in which case the first direction X and the second direction Y are perpendicular.

[0078] Optionally, a line width D1 of the first driving electrodes 31T ranges from 30 microns to 100 microns, and a line width D2 of the first sensing electrodes 31R also ranges from 30 microns to 100 microns, for example, both can be 30 microns, 40 microns, 50 microns, 60 microns, 70 microns, 100 microns, etc. A line spacing L1 between adjacent first driving electrodes 31T is greater than or equal to 50 microns, and a line spacing L2 between adjacent first sensing electrodes 31R is also greater than or equal to 50 microns, for example, both can be 50 microns, 60 microns, 70 microns, etc. Preferably, a line width D1 of the first driving electrodes 31T is equal to a line width D2 of the first sensing electrodes 31R, a line spacing L1 between adjacent first driving electrodes 31T is equal to a line spacing L2 between adjacent first sensing electrodes 31R, and a line width D1 of the first driving electrodes 31T is also equal to a line spacing L1 between adjacent first driving electrodes 31T. For example, both line widths can be 50 microns and the line spacing can be 50 microns to be compatible with a manufacturing process when the first display substrate 1 is a PCB.

[0079] Continuing with Figure 3 , the first sub-hole 1111 can be provided corresponding to one end of the first drive electrode 31T, and the second sub-hole 1112 can be provided corresponding to one end of the first sensing electrode 31R. However, the present application is not limited thereto. The first sub-hole 1111 can also be located at opposite ends of the first drive electrode 31T or in the middle of the first drive electrode 31T. Similarly, the second sub-hole 1112 can also be located at opposite ends of the first sensing electrode 31R or in the middle of the first sensing electrode 31R. This allows each first drive electrode 31T and each first sensing electrode 31R to have multiple connection points, as shown in Figure 4 . By providing multiple connection points on each first drive electrode 31T and each first sensing electrode 31R, the electrical connection stability between the first touch control electrode 31 and the first touch control drive device 21 can be improved, and the voltage drop across the first touch control electrode 31 can be reduced.

[0080] 5 , the second display substrate 2 includes a light-emitting substrate 70 and a second touch layer 80 located on the light-emitting side of the light-emitting substrate 70 . The second touch layer 80 is provided with a second touch electrode 81 and a touch trace 82 located on the side of the second touch electrode 81 away from the first display substrate 1 . Each of the touch traces 82 is electrically connected to one of the second touch electrodes 81 .

[0081] Specifically, the light-emitting substrate 70 includes a backlight module 71, and a first substrate 72 and a second substrate 73 disposed in the light-emitting direction of the backlight module 71. Optionally, the first substrate 72 is an array substrate, and the second substrate 73 is a color filter substrate, but the present application is not limited thereto. The first substrate 72 of the present application may also be a GOA (Gate Driver on Array) substrate or a COA (Color-Filter on Array) substrate, etc.

[0082] The light-emitting substrate 70 further includes a liquid crystal layer 74 and a sealant 75 disposed between the first substrate 72 and the second substrate 73. The sealant 75 surrounds the liquid crystal layer 74 to block moisture and bond the first substrate 72 and the second substrate 73 together. Furthermore, the light-emitting substrate 70 further includes a first polarizer 76 located between the first substrate 72 and the backlight module 71, and a second polarizer 77 located between the second substrate 73 and the touch layer.

[0083] The backlight module 71 is used to provide backlight for the light-emitting substrate 70. The backlight from the backlight module 71 is polarized by the first polarizer 76 and then emitted to the liquid crystal layer 74. The liquid crystal molecules in the liquid crystal layer 74 are deflected by the electric field, and the deflected liquid crystal molecules refract the backlight provided by the backlight module 71 toward the second substrate 73. A color filter is provided on the second substrate 73 to impart different colors to the backlight after passing through the second substrate 73. The color filter is then polarized by the second polarizer 77 and then emitted to display images on the light-emitting substrate 70. The color filter is not limited to being provided on the second substrate 73. For example, when the first substrate 72 is a COA substrate, the color filter can be provided on the first substrate 72.

[0084] With reference to Figures 5 and 6 , the second touch layer 80 is disposed on a side of the second polarizer 77 away from the second substrate 73. The second touch electrodes 81 of the second touch layer 80 also include second drive electrodes 81T and second sensing electrodes 81R. Both the second drive electrodes 81T and the second sensing electrodes 81R are located within the second display area AA2. The second drive electrodes 81T extend along the first direction X and are arranged at intervals along the second direction Y. The second sensing electrodes 81R extend along the second direction Y and are arranged at intervals along the first direction X.

[0085] The touch lines 82 of the touch layer are located within the first non-display area NA1 and extend from the first non-display area NA1 to the second non-display area NA2. Each touch line 82 is electrically connected to a second drive electrode 81T. The second drive electrode 81T is electrically connected to a second touch drive device via the touch lines 82. The second touch drive device is disposed on the chip-on-film 3. Of course, the second sensing electrodes 81R are also electrically connected to the second touch drive device via corresponding touch lines 82. The touch lines 82 corresponding to the second sensing electrodes 81R can be disposed directly in the second non-display area NA2.

[0086] In this way, by setting the touch trace 82 of the second touch layer 80 on the side of the second touch electrode 81 away from the first display substrate 1, that is, the touch trace 82 of the second touch layer 80 is not set on the side of the second display substrate 2 close to the first display substrate 1, there is no touch frame in the splicing area of ​​the second display substrate 2, thereby further improving the display quality of the display panel 100.

[0087] In one embodiment, referring to Figures 1 to 7, Figure 7 is a schematic diagram of another cross-sectional structure of the first display substrate 1 in Figure 1. Unlike the above embodiment, referring to Figure 7, the first touch electrodes 31 include first drive electrodes 31T and first sensing electrodes 31R. The first drive electrodes 31T and the first sensing electrodes 31R are disposed on the same layer. The first touch layer 30 also includes a bridging electrode 32, which bridges the first drive electrodes 31T or the first sensing electrodes 31R. The bridging electrode 32 is located on a side of the first drive electrodes 31T and the first sensing electrodes 31R away from the driver device layer 20. This embodiment uses the electrical connection between the first drive electrodes 31T and the bridging electrode 32 as an example. The bridging electrode 32 is electrically connected to the first drive electrodes 31T via the fourth via 114.

[0088] In this way, when the first driving electrodes 31T and the first sensing electrodes 31R are disposed in the same layer, the bridging electrode 32 is disposed on a side of the first driving electrodes 31T and the first sensing electrodes 31R away from the driving device layer 20, thereby reducing the influence of the bridging electrode 32 on the arrangement of the first sub-aperture 1111 and the second sub-aperture 1112. For other explanations, please refer to the above embodiment and will not be repeated here.

[0089] In one embodiment, please refer to Figures 1 to 8. Figure 8 is another schematic cross-sectional structure diagram of the first display substrate 1 in Figure 1. Different from the above embodiment, referring to Figure 8, the first display substrate 1 further includes a first shielding layer 91, a second shielding layer 92, a fifth insulating layer 15, and a sixth insulating layer 16. The first shielding layer 91 is disposed on a side of the third insulating layer 13 away from the signal line layer 60. The fifth insulating layer 15 is disposed between the first shielding layer 91 and the first touch layer 30. The second shielding layer 92 is disposed on a side of the fourth insulating layer 14 away from the first touch layer 30. The sixth insulating layer 16 is disposed between the second shielding layer 92 and the light-emitting device binding layer 40. The first shielding layer 91 and the second shielding layer 92 are both at a constant potential.

[0090] Optionally, the first shielding layer 91 and the second shielding layer 92 are made of the same material as the signal line layer 60 and the first touch electrode 31 . The fifth insulating layer 15 and the sixth insulating layer 16 are made of the same material as the first insulating layer 11 .

[0091] In this embodiment, a first shielding layer 91 is provided between the signal line layer 60 and the first touch layer 30, and a constant potential is set on the first shielding layer 91, for example, the first shielding layer 91 is grounded. This shielding layer 91 can thus shield the signal traces 61 of the signal line layer 60 from interfering with the first touch layer 30. Similarly, a second shielding layer 92 is provided between the first touch layer 30 and the light-emitting device binding layer 40, and a constant potential is set on the second shielding layer 92, for example, the second shielding layer 92 is grounded. This shielding layer 92 can thus shield the light-emitting device binding layer 40 from interfering with the first touch layer 30. For other explanations, please refer to the above embodiment and will not be repeated here.

[0092] Based on the same inventive concept, an embodiment of the present application further provides an electronic device, which includes the display panel 100 of one of the aforementioned embodiments.

[0093] According to the above embodiments, it can be seen that:

[0094] In a display panel and electronic device provided in the present application, the display panel includes at least one first display substrate, the first display substrate includes a stacked driver device layer, a first insulating layer, a first touch layer, a light-emitting device binding layer and a light-emitting device, the first touch layer is provided with a first touch electrode, and the first touch electrode is electrically connected to the first touch driver device through a first via hole penetrating the first insulating layer. In this way, by integrating the touch layer in the first display substrate and punching holes in the first display substrate to directly electrically connect the touch electrode of the touch layer to the first touch driver device, the touch layer does not have a touch frame, which solves the problem of the touch frame existing when the existing large-screen display adopts an external capacitive touch solution.

[0095] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0096] The above is a detailed introduction to the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, comprising at least one first display substrate (1), wherein the first display substrate (1) comprises: A first insulating layer (11); A driving device layer (20) is arranged on one side of the first insulating layer (11), the driving device layer (20) comprising a first touch driving device (21) and a first light-emitting driving device (22); a first touch control layer (30) arranged on a side of the first insulating layer (11) away from the driving device layer (20), the first touch control layer (30) being provided with a first touch control electrode (31), the first touch control electrode (31) being electrically connected to the first touch control driving device (21); a light emitting device binding layer (40) disposed on a side of the first touch control layer (30) away from the driving device layer (20), the light emitting device binding layer (40) being provided with a binding electrode (41), the binding electrode (41) being electrically connected to the first light emitting driving device (22); and A light emitting device (50) is arranged on a side of the light emitting device binding layer (40) away from the first touch control layer (30) and is bonded to the binding electrode (41); The first display substrate (1) further comprises a plurality of first via holes (111), each of the first via holes (111) penetrating the first insulating layer (11); the first touch electrode (31) comprises an electrode portion (311) and a connecting portion (312); the electrode portion (311) is located on a side of the first insulating layer (11) away from the drive device layer (20); the connecting portion (312) is located in the first via hole (111); and the electrode portion (311) is electrically connected to the first touch drive device (21) via the connecting portion (312).

2. The display panel according to claim 1, wherein: The first touch control electrode (31) comprises a first driving electrode (31T) and a first sensing electrode (31R), the first driving electrode (31T) and the first sensing electrode (31R) being arranged in the same layer, the first touch control layer (30) further comprises a bridging electrode (32), the first driving electrode (31T) or the first sensing electrode (31R) being bridged by the bridging electrode (32), the bridging electrode (32) being located on a side of the first driving electrode (31T) and the first sensing electrode (31R) away from the driving device layer (20).

3. The display panel according to claim 1, wherein: The first touch electrode (31) comprises a first driving electrode (31T) and a first sensing electrode (31R), the first driving electrode (31T) comprises a driving electrode portion (311T) and a driving connection portion (312T), and the first sensing electrode (31R) comprises a sensing electrode portion (311R) and a sensing connection portion (312R); The first display substrate (1) further comprises a second insulating layer (12), the second insulating layer (12) being located on a side of the first insulating layer (11) away from the driving device layer (20), the driving electrode portion (311T) being located on a side of the second insulating layer (12) away from the first insulating layer (11), and the sensing electrode portion (311R) being located on a side of the second insulating layer (12) close to the first insulating layer (11); The first via hole (111) comprises a first sub-hole (1111) and a second sub-hole (1112); the first sub-hole (1111) penetrates the second insulating layer (12) and the first insulating layer (11); the second sub-hole (1112) penetrates the first insulating layer (11); the driving connection portion (312T) is located in the first sub-hole (1111); the driving electrode portion (311T) is electrically connected to the first touch driving device (21) via the driving connection portion (312T); the sensing connection portion (312R) is located in the second sub-hole (1112); the sensing electrode portion (311R) is electrically connected to the first touch driving device (21) via the sensing connection portion (312R).

4. The display panel according to claim 3, wherein: The line width of the first driving electrode (31T) and the first sensing electrode (31R) ranges from 30 micrometers to 100 micrometers, the line spacing between adjacent first driving electrodes (31T) is greater than or equal to 50 micrometers, and the line spacing between adjacent first sensing electrodes (31R) is greater than or equal to 50 micrometers.

5. The display panel according to claim 4, wherein: The line width of the first driving electrode (31T) is equal to the line width of the first sensing electrode (31R), the line spacing between adjacent first driving electrodes (31T) is equal to the line spacing between adjacent first sensing electrodes (31R), and the line width of the first driving electrode (31T) is equal to the line spacing between adjacent first driving electrodes (31T).

6. The display panel according to claim 1, wherein: The first display substrate (1) further comprises: A signal line layer (60) is arranged on a side of the first insulating layer (11) close to the first touch control layer (30), the signal line layer (60) comprising a signal wiring (61), the signal wiring (61) being electrically connected between the first light-emitting driving device (22) and the binding electrode (41); a third insulating layer (13), arranged between the signal line layer (60) and the first touch control layer (30); and a fourth insulating layer (14), arranged between the first touch control layer (30) and the light emitting device binding layer (40); The first display substrate (1) further comprises a plurality of second via holes (112) and a third via hole (113); the second via holes (112) penetrate the fourth insulating layer (14), the first touch control layer (30) and the third insulating layer (13); the third via holes (113) penetrate the first insulating layer (11); the binding electrode (41) is electrically connected to the signal wiring (61) through the second via holes (112); and the signal wiring (61) is electrically connected to the first light-emitting driving device (22) through the third via holes (113).

7. The display panel according to claim 6, wherein: The first display substrate (1) further comprises: A first shielding layer (91) is arranged on a side of the third insulating layer (13) away from the signal line layer (60); a fifth insulating layer (15), arranged between the first shielding layer (91) and the first touch control layer (30); A second shielding layer (92) is arranged on a side of the fourth insulating layer (14) away from the first touch control layer (30); a sixth insulating layer (16), arranged between the second shielding layer (92) and the light emitting device binding layer (40); Wherein, the first shielding layer (91) and the second shielding layer (92) are both at a constant potential.

8. The display panel according to claim 7, wherein: The first shielding layer (91), the second shielding layer (92), the signal line layer (60) and the first touch electrode (31) are made of the same material.

9. The display panel according to claim 1, wherein: The display panel further comprises a plurality of second display substrates (2), the plurality of second display substrates (2) being spliced ​​together, and the first display substrate (1) being located at the splicing position of two adjacent second display substrates (2).

10. The display panel according to claim 9, wherein: The second display substrate (2) comprises a light-emitting substrate (70) and a second touch layer (80) located on a light-emitting side of the light-emitting substrate (70); the second touch layer (80) is provided with a second touch electrode (81) and a touch trace (82) located on a side of the second touch electrode (81) away from the first display substrate (1); each of the touch traces (82) is electrically connected to one of the second touch electrodes (81).

11. An electronic device, comprising a display panel (100), wherein the display panel (100) comprises at least one first display substrate (1), wherein the first display substrate (1) comprises: A first insulating layer (11); A driving device layer (20) is arranged on one side of the first insulating layer (11), the driving device layer (20) comprising a first touch driving device (21) and a first light-emitting driving device (22); a first touch control layer (30) arranged on a side of the first insulating layer (11) away from the driving device layer (20), the first touch control layer (30) being provided with a first touch control electrode (31), the first touch control electrode (31) being electrically connected to the first touch control driving device (21); a light emitting device binding layer (40) disposed on a side of the first touch control layer (30) away from the driving device layer (20), the light emitting device binding layer (40) being provided with a binding electrode (41), the binding electrode (41) being electrically connected to the first light emitting driving device (22); and A light emitting device (50) is arranged on a side of the light emitting device binding layer (40) away from the first touch control layer (30) and is bonded to the binding electrode (41); The first display substrate (1) further comprises a plurality of first via holes (111), each of the first via holes (111) penetrating the first insulating layer (11); the first touch electrode (31) comprises an electrode portion (311) and a connecting portion (312); the electrode portion (311) is located on a side of the first insulating layer (11) away from the drive device layer (20); the connecting portion (312) is located in the first via hole (111); and the electrode portion (311) is electrically connected to the first touch drive device (21) via the connecting portion (312).

12. The electronic device according to claim 11, wherein: The first touch control electrode (31) comprises a first driving electrode (31T) and a first sensing electrode (31R), the first driving electrode (31T) and the first sensing electrode (31R) being arranged in the same layer, the first touch control layer (30) further comprises a bridging electrode (32), the first driving electrode (31T) or the first sensing electrode (31R) being bridged by the bridging electrode (32), the bridging electrode (32) being located on a side of the first driving electrode (31T) and the first sensing electrode (31R) away from the driving device layer (20).

13. The electronic device according to claim 11, wherein: The first touch electrode (31) comprises a first driving electrode (31T) and a first sensing electrode (31R), the first driving electrode (31T) comprises a driving electrode portion (311T) and a driving connection portion (312T), and the first sensing electrode (31R) comprises a sensing electrode portion (311R) and a sensing connection portion (312R); The first display substrate (1) further comprises a second insulating layer (12), the second insulating layer (12) being located on a side of the first insulating layer (11) away from the driving device layer (20), the driving electrode portion (311T) being located on a side of the second insulating layer (12) away from the first insulating layer (11), and the sensing electrode portion (311R) being located on a side of the second insulating layer (12) close to the first insulating layer (11); The first via hole (111) comprises a first sub-hole (1111) and a second sub-hole (1112); the first sub-hole (1111) penetrates the second insulating layer (12) and the first insulating layer (11); the second sub-hole (1112) penetrates the first insulating layer (11); the driving connection portion (312T) is located in the first sub-hole (1111); the driving electrode portion (311T) is electrically connected to the first touch driving device (21) via the driving connection portion (312T); the sensing connection portion (312R) is located in the second sub-hole (1112); the sensing electrode portion (311R) is electrically connected to the first touch driving device (21) via the sensing connection portion (312R).

14. The electronic device according to claim 13, wherein: The line width of the first driving electrode (31T) and the first sensing electrode (31R) ranges from 30 micrometers to 100 micrometers, the line spacing between adjacent first driving electrodes (31T) is greater than or equal to 50 micrometers, and the line spacing between adjacent first sensing electrodes (31R) is greater than or equal to 50 micrometers.

15. The electronic device according to claim 14, wherein: The line width of the first driving electrode (31T) is equal to the line width of the first sensing electrode (31R), the line spacing between adjacent first driving electrodes (31T) is equal to the line spacing between adjacent first sensing electrodes (31R), and the line width of the first driving electrode (31T) is equal to the line spacing between adjacent first driving electrodes (31T).

16. The electronic device according to claim 11, wherein: The first display substrate (1) further comprises: A signal line layer (60) is arranged on a side of the first insulating layer (11) close to the first touch control layer (30), the signal line layer (60) comprising a signal wiring (61), the signal wiring (61) being electrically connected between the first light-emitting driving device (22) and the binding electrode (41); a third insulating layer (13), arranged between the signal line layer (60) and the first touch control layer (30); and a fourth insulating layer (14), arranged between the first touch control layer (30) and the light emitting device binding layer (40); The first display substrate (1) further comprises a plurality of second via holes (112) and a third via hole (113); the second via holes (112) penetrate the fourth insulating layer (14), the first touch control layer (30) and the third insulating layer (13); the third via holes (113) penetrate the first insulating layer (11); the binding electrode (41) is electrically connected to the signal wiring (61) through the second via holes (112); and the signal wiring (61) is electrically connected to the first light-emitting driving device (22) through the third via holes (113).

17. The electronic device according to claim 16, wherein: The first display substrate (1) further comprises: A first shielding layer (91) is arranged on a side of the third insulating layer (13) away from the signal line layer (60); a fifth insulating layer (15), arranged between the first shielding layer (91) and the first touch control layer (30); A second shielding layer (92) is arranged on a side of the fourth insulating layer (14) away from the first touch control layer (30); a sixth insulating layer (16), arranged between the second shielding layer (92) and the light emitting device binding layer (40); Wherein, the first shielding layer (91) and the second shielding layer (92) are both at a constant potential.

18. The electronic device according to claim 17, wherein: The first shielding layer (91), the second shielding layer (92), the signal line layer (60) and the first touch electrode (31) are made of the same material.

19. The electronic device according to claim 11, wherein: The display panel further comprises a plurality of second display substrates (2), the plurality of second display substrates (2) being spliced ​​together, and the first display substrate (1) being located at the splicing position of two adjacent second display substrates (2).

20. The electronic device according to claim 19, wherein: The second display substrate (2) comprises a light-emitting substrate (70) and a second touch layer (80) located on a light-emitting side of the light-emitting substrate (70); the second touch layer (80) is provided with a second touch electrode (81) and a touch trace (82) located on a side of the second touch electrode (81) away from the first display substrate (1); each of the touch traces (82) is electrically connected to one of the second touch electrodes (81).

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