Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device.The display panel comprises a substrate, an array layer, a protection layer and a touch layer, the array layer is located on one side of the substrate, and the array layer comprises wires; the protection layer is located on the side, away from the substrate, of the array layer, and a first via hole and a second via hole which penetrate through the protection layer in the thickness direction of the display panel are formed in the protection layer; the touch layer is located on the side, away from the substrate, of the protection layer and comprises connecting electrodes, and the same connecting electrode is electrically connected with the wires through the first via holes and the second via holes. According to the display panel provided by the invention, the same connecting electrode is connected with the wire through the two via holes, so that even if the connecting electrode does not completely cover one via hole due to a size error, the via hole is corroded by etching liquid, and the lap joint of the connecting electrode and the wire is poor; the connecting electrode can be connected with the wire through another via hole, so that the connection reliability of the connecting electrode and the wire is improved, and the use performance of the display panel is further improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0004] Embodiments of the present application provide a display panel and a display device, aiming to improve the performance of the display panel.

[0005] An embodiment of the first aspect of the present application provides a display panel, including a substrate, an array layer, a protective layer and a touch layer, wherein the array layer is located on one side of the substrate, and the array layer includes routing; the protective layer is located on the side of the array layer away from the substrate, and the protective layer is provided with a first via hole and a second via hole that penetrates the protective layer along the thickness direction of the display panel; the touch layer is located on the side of the protective layer away from the substrate, and the touch layer includes a connecting electrode, and the same connecting electrode is electrically connected to the routing through the first via hole and the second via hole.

[0006] According to an implementation of the first aspect of the present application, it also includes a display area and a non-display area located on one side of the display area in the first direction, the first direction is arranged to intersect with the thickness direction, and the first via hole and the second via hole are both located in the non-display area; optionally, at least part of the wiring extends from the display area to the non-display area; optionally, at least part of the connecting electrode extends from the display area to the non-display area; optionally, it also includes a binding area located in the non-display area away from the display area.

[0007] According to an implementation scheme of the first aspect of the present application, the orthographic projection of the first via on the substrate and the orthographic projection of the second via on the substrate are spaced apart along a first direction; optionally, the orthographic projection of the first via on the substrate and the orthographic projection of the second via on the substrate are both located within the orthographic projection of the same connecting electrode on the substrate.

[0008] According to an implementation scheme of the first aspect of the present application, the outline of the orthographic projection of the first via on the substrate includes a first side and a second side spaced apart along the second direction, and the outline of the orthographic projection of the second via on the substrate includes a third side and a fourth side spaced apart along the second direction; the extension line of the first side is staggered with the extension line of the third side, and the extension line of the second side is staggered with the extension line of the fourth side, and the first direction, the second direction and the thickness direction of the display panel are intersected in pairs.

[0009] According to an implementation scheme of the first aspect of the present application, an extension line of the second side at least partially overlaps with an orthographic projection of the second via on the substrate, and an extension line of the third side at least partially overlaps with an orthographic projection of the first via on the substrate; optionally, the extension line of the second side and the extension line of the third side are staggered; optionally, the distance between the first side and the second side is equal to the distance between the third side and the fourth side.

[0010] According to an implementation of the first aspect of the present application, an extension line of the second side coincides with an extension line of the third side, or an extension line of the third side is located outside the orthographic projection of the first via hole on the substrate.

[0011] According to an implementation scheme of the first aspect of the present application, the routing includes a first routing and a second routing that are spaced apart, and a same connecting electrode is electrically connected to the first routing and the second routing through a first via hole and a second via hole, respectively; an orthographic projection of the first routing on the substrate is outside the orthographic projection of the second routing on the substrate.

[0012] According to an implementation of the first aspect of the present application, the routing also includes a third routing, the first routing and the second routing are electrically connected to the third routing, and the orthographic projection of the first via on the substrate and the orthographic projection of the second via on the substrate are both located outside the orthographic projection of the third routing on the substrate.

[0013] According to an implementation of the first aspect of the present application, the orthographic projection of the first via on the substrate is located within the orthographic projection of the first trace on the substrate, and the orthographic projection of the second via on the substrate is located within the orthographic projection of the second trace on the substrate.

[0014] An embodiment of the second aspect of the present application further provides a display device, comprising the display panel provided by any of the above-mentioned embodiments of the first aspect.

[0015] The display panel provided in the embodiment of the present application includes a substrate, an array layer, a protective layer and a touch layer, wherein the array layer is located on one side of the substrate, and the array layer includes a wiring; the protective layer is located on the side of the array layer away from the substrate, and the protective layer is provided with a first via hole and a second via hole penetrating the protective layer along the thickness direction of the display panel; the touch layer is located on the side of the protective layer away from the substrate, and the touch layer includes a connecting electrode, and the same connecting electrode is electrically connected to the wiring through the first via hole and the second via hole. The display panel provided in the present application connects the same connecting electrode to the wiring through two via holes, so that even if the connecting electrode does not completely cover one of the via holes due to a size error, causing the via hole to be corroded by an etching solution and resulting in poor overlap between the connecting electrode and the wiring, the connecting electrode and the wiring can still be connected through another via hole, thereby improving the connection reliability between the connecting electrode and the wiring, thereby improving the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0017] Figure 1 is a top view of a display panel provided in an embodiment of the present application;

[0018] Figure 2 It is an example Figure 1 A partial enlarged view of position A in the middle;

[0019] Figure 3 It is an example Figure 2 Schematic diagram of the cross-sectional structure of the middle BB section;

[0020] Figure 4 Another example is Figure 1 A partial enlarged view of position A in the middle;

[0021] Figure 5 This is another example Figure 1 A partial enlarged view of position A in the middle.

[0022] Description of reference numerals:

[0023] 10. Display panel;

[0024] 100, substrate;

[0025] 200, array layer; 210, routing; 211, first routing; 212, second routing; 213, third routing;

[0026] 300, protective layer; 310, first via hole; 311, first side; 312, second side; 320, second via hole; 321, third side; 322, fourth side;

[0027] 400, touch layer; 410, connecting electrodes;

[0028] AA, display area; NA, non-display area; BA, binding area;

[0029] z, thickness direction; x, first direction; y, second direction. DETAILED DESCRIPTION

[0030] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0031] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0033] In order to better understand this application, Figures 1 to 5 The display panel and the display device of the embodiment of the present application are described in detail, wherein the x direction is the first direction, the y direction is the second direction, and the z direction is the thickness direction of the display panel.

[0034] Please also read Figures 1 to 3 , Figure 1 is a top view of a display panel provided in an embodiment of the present application; Figure 2 It is an example Figure 1 A partial enlarged view of position A in the middle; Figure 3 It is an example Figure 2 Schematic diagram of the cross-sectional structure of the BB section.

[0035] like Figures 1 to 3 As shown, an embodiment of the first aspect of the present application provides a display panel 10, including a substrate 100, an array layer 200, a protective layer 300 and a touch layer 400, wherein the array layer 200 is located on one side of the substrate 100, and the array layer 200 includes a wiring 210. The protective layer 300 is located on the side of the array layer 200 away from the substrate 100, and the protective layer 300 is provided with a first via hole 310 and a second via hole 320 penetrating the protective layer 300 along the thickness direction of the display panel 10 (Z direction in the figure). The touch layer 400 is located on the side of the protective layer 300 away from the substrate 100, and the touch layer 400 includes a connecting electrode 410, and the same connecting electrode 410 is electrically connected to the wiring 210 through the first via hole 310 and the second via hole 320.

[0036] Optionally, there are multiple ways to set the array layer 200, and the array layer 200 may include a first conductive layer, a second conductive layer, and a third conductive layer that are stacked. An insulating layer is provided between adjacent conductive layers. Optionally, the array layer 200 may also include a driver layer, in which a pixel driving circuit is provided, and the pixel driving circuit includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source and a drain. The storage capacitor includes a first plate and a second plate. As an example, the gate and the first plate may be located in the first conductive layer, the second plate may be located in the second conductive layer, and the source and the drain may be located in the third conductive layer. The routing 210 may be located in any conductive layer, such as the second conductive layer or the third conductive layer.

[0037] Optionally, the protection layer 300 may be a combination of one or more of a pixel definition layer (not shown), an insulating layer (not shown), and a planarization layer (not shown).

[0038] The display panel 10 provided in the present application connects the same connecting electrode 410 to the wiring 210 through two vias. Even if the connecting electrode 410 does not completely cover one of the vias due to a size error, causing the via to be corroded by the etching solution and resulting in poor overlap between the connecting electrode 410 and the wiring 210, the connecting electrode 410 and the wiring 210 can still be connected through another via, thereby improving the connection reliability between the connecting electrode 410 and the wiring 210, thereby improving the performance of the display panel 10.

[0039] In some optional embodiments, the display panel 10 further includes a display area AA and a non-display area NA located on one side of the display area AA in a first direction (the x direction in the figure), the first direction x is arranged to intersect with the thickness direction z, and the first via hole 310 and the second via hole 320 are both located in the non-display area NA.

[0040] Optionally, the display panel 10 further includes a binding area BA located in the non-display area NA away from the display area AA. The first direction x may be a vertical direction.

[0041] Optionally, at least part of the wiring 210 extends from the display area AA to the non-display area NA.

[0042] Optionally, at least part of the connection electrode 410 extends from the display area AA to the non-display area NA. The touch layer 400 further includes a touch electrode (not shown) located in the display area AA. The touch electrode is used to implement a touch function and is electrically connected to the connection electrode 410 .

[0043] Optionally, the first direction x is a vertical direction.

[0044] The display panel 10 provided in the present application has the first via hole 310 and the second via hole 320 both located in the non-display area NA, so that the touch layer 400 is connected to the trace 210 in the non-display area NA, thereby reducing the space occupied by the via holes in the display area AA, thereby improving the pixel density of the display area AA.

[0045] In some optional embodiments, an orthographic projection of the first via hole 310 on the substrate 100 and an orthographic projection of the second via hole 320 on the substrate 100 are spaced apart along the first direction x.

[0046] Optionally, the orthographic projection of the first via hole 310 on the substrate 100 and the orthographic projection of the second via hole 320 on the substrate 100 are both located within the orthographic projection of the same connecting electrode 410 on the substrate 100 .

[0047] The display panel 10 provided in the present application is configured such that the binding area BA and the non-display area NA are bent to the backlight side of the display area AA. By arranging the first via hole 310 and the second via hole 320 at intervals in the vertical direction, the influence of the position of the first via hole 310 and the second via hole 320 on the border width of the display panel 10 is reduced.

[0048] In some optional embodiments, the contour of the orthographic projection of the first via hole 310 on the substrate 100 includes a first side 311 and a second side 312 spaced apart along the second direction (y direction in the figure), and the contour of the orthographic projection of the second via hole 320 on the substrate 100 includes a third side 321 and a fourth side 322 spaced apart along the second direction y. The extension line of the first side 311 is staggered with the extension line of the third side 321, the extension line of the second side 312 is staggered with the extension line of the fourth side 322, and the first direction x, the second direction y, and the thickness direction z are intersected in pairs.

[0049] Optionally, the second direction y is a horizontal direction.

[0050] Optionally, an extension line of the second side 312 at least partially overlaps with an orthographic projection of the second via hole 320 on the substrate 100 , and an extension line of the third side 321 at least partially overlaps with an orthographic projection of the first via hole 310 on the substrate 100 .

[0051] Optionally, an extension line of the second side 312 and an extension line of the third side 321 are staggered.

[0052] Optionally, the distance between the first side 311 and the second side 312 is equal to the distance between the third side 321 and the fourth side 322 .

[0053] The display panel 10 provided by the present application is arranged so that the extension line of the first side 311 is staggered with the extension line of the third side 321, and the extension line of the second side 312 is staggered with the extension line of the fourth side 322, so that the first via hole 310 and the second via hole 320 are arranged at intervals in the vertical direction and are also staggered in the left and right directions. When the connecting electrode 410 has a size error in the first direction x and does not completely cover one of the via holes, the via hole is corroded by the etching solution, resulting in poor overlap between the connecting electrode and the wiring, because the first via hole 310 and the second via hole 320 are arranged at intervals in the vertical direction, the connecting electrode 410 can still be connected to the wiring 210 through another via hole. However, when the connecting electrode 410 has a size error in the second direction y and fails to completely cover one of the vias, the via is corroded by the etching solution, resulting in poor overlap between the connecting electrode and the wiring. Since the first via 310 and the second via 320 are offset in the horizontal direction, the connecting electrode 410 and the wiring 210 can still be connected through the other via, further improving the connection reliability between the connecting electrode 410 and the wiring 210.

[0054] Please refer to Figure 4 and Figure 5 , Figure 4 Another example is Figure 1 A partial enlarged view of position A in the middle; Figure 5 This is another example Figure 1 A partial enlarged view of position A in the middle.

[0055] In some optional embodiments, the extension line of the second side 312 coincides with the extension line of the third side 321 (eg Figure 4 Alternatively, the extension line of the second side 312 is located outside the orthographic projection of the second via hole 320 on the substrate 100, and the extension line of the third side 321 is located outside the orthographic projection of the first via hole 310 on the substrate 100 (as shown in FIG. Figure 5 shown).

[0056] The display panel 10 provided in the present application further improves the allowable error of the connection electrode 410 in the second direction y by completely staggering the first via hole 310 and the second via hole 320 in the second direction y, thereby further improving the connection reliability between the connection electrode 410 and the wiring 210 .

[0057] Please continue to refer to Figure 2 In some optional embodiments, the routing line 210 includes a first routing line 211 and a second routing line 212 that are spaced apart, and the same connection electrode 410 is electrically connected to the first routing line 211 and the second routing line 212 through a first via hole 310 and a second via hole 320, respectively. The orthographic projection of the first routing line 211 on the substrate 100 is outside the orthographic projection of the second routing line 212 on the substrate 100.

[0058] Optionally, the routing 210 further includes a third routing 213, the first routing 211 and the second routing 212 are both electrically connected to the third routing 213, and the orthographic projection of the first via 310 on the substrate 100 and the orthographic projection of the second via 320 on the substrate 100 are both located outside the orthographic projection of the third routing 213 on the substrate 100. The third routing 213 is equivalent to a bus, and the first routing 211 and the second routing 212 are equivalent to branches connected in parallel and both connected to the bus.

[0059] Optionally, the orthographic projection of the first via hole 310 on the substrate 100 is located within the orthographic projection of the first trace 211 on the substrate 100 , and the orthographic projection of the second via hole 320 on the substrate 100 is located within the orthographic projection of the second trace 212 on the substrate 100 .

[0060] The display panel 10 provided in the present application makes the wiring 210 include a first wiring 211, a second wiring 212 and a third wiring 213, and the first wiring 211 and the second wiring 212 are connected in parallel, so that the first wiring 211 and the second wiring 212 do not affect each other. Even if one of the wirings is corroded by the etching solution, the other wiring can connect the connecting electrode 410 and the third wiring 213, thereby improving the connection reliability between the connecting electrode 410 and the wiring 210.

[0061] The embodiment of the second aspect of the present application further provides a display device, including the display panel of any of the above-mentioned embodiments of the first aspect. Since the display device provided by the embodiment of the third aspect of the present application includes the display panel of any of the above-mentioned embodiments, the display device provided by the embodiment of the third aspect of the present application has the beneficial effects of the display panel of any of the above-mentioned embodiments, which will not be repeated here.

[0062] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0063] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: substrate; An array layer, located on one side of the substrate, the array layer comprising routing lines; a protective layer, located on a side of the array layer away from the substrate, the protective layer being provided with a first via hole and a second via hole penetrating the protective layer along a thickness direction of the display panel; The touch layer is located on a side of the protection layer away from the substrate, and the touch layer includes a connecting electrode. The same connecting electrode is electrically connected to the trace through the first via hole and the second via hole.

2. The display panel according to claim 1, characterized in that: It also includes a display area and a non-display area located on one side of the display area in a first direction, the first direction is arranged to intersect with the thickness direction, and the first via hole and the second via hole are both located in the non-display area; Preferably, at least part of the wiring extends from the display area to the non-display area; Preferably, at least part of the connecting electrodes extends from the display area to the non-display area; Preferably, it also includes a binding area located in the non-display area away from the display area.

3. The display panel according to claim 2, characterized in that: The orthographic projection of the first via hole on the substrate and the orthographic projection of the second via hole on the substrate are arranged at intervals along the first direction; Preferably, the orthographic projection of the first via hole on the substrate and the orthographic projection of the second via hole on the substrate are both located within the orthographic projection of the same connecting electrode on the substrate.

4. The display panel according to claim 3, characterized in that: The outline of the orthographic projection of the first via on the substrate includes a first side and a second side arranged at intervals along a second direction, and the outline of the orthographic projection of the second via on the substrate includes a third side and a fourth side arranged at intervals along the second direction; the extension line of the first side is staggered with the extension line of the third side, and the extension line of the second side is staggered with the extension line of the fourth side, and the first direction, the second direction and the thickness direction of the display panel are intersected in pairs.

5. The display panel according to claim 4, characterized in that: An extension line of the second side at least partially overlaps with an orthographic projection of the second via hole on the substrate, and an extension line of the third side at least partially overlaps with an orthographic projection of the first via hole on the substrate; Preferably, the extension line of the second side and the extension line of the third side are staggered; Preferably, the distance between the first side and the second side is equal to the distance between the third side and the fourth side.

6. The display panel according to claim 4, characterized in that: An extension line of the second side coincides with an extension line of the third side, or an extension line of the third side is located outside an orthographic projection of the first via hole on the substrate.

7. The display panel according to claim 1, characterized in that: The routing wires include a first routing wire and a second routing wire that are spaced apart from each other, and the same connecting electrode is electrically connected to the first routing wire and the second routing wire through the first via hole and the second via hole, respectively; The orthographic projection of the first routing line on the substrate is outside the orthographic projection of the second routing line on the substrate.

8. The display panel according to claim 7, characterized in that: The routing also includes a third routing, the first routing and the second routing are both electrically connected to the third routing, and the orthographic projection of the first via on the substrate and the orthographic projection of the second via on the substrate are both located outside the orthographic projection of the third routing on the substrate.

9. The display panel according to claim 7, characterized in that: The orthographic projection of the first via hole on the substrate is located within the orthographic projection of the first trace on the substrate, and the orthographic projection of the second via hole on the substrate is located within the orthographic projection of the second trace on the substrate.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 9.

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