Display panel and display device

Abstract

The application relates to a display panel and a display device, the display panel comprising a display area and a non-display area, the non-display area being arranged outside the display area, the non-display area comprising a gate driving area and a barrier wall area, the barrier wall area being arranged outside the gate driving area, and the barrier wall area being configured to consume water vapor in the non-display area to prevent the water vapor from entering the gate driving area. Thus, by arranging the barrier wall area outside the gate driving area, the barrier wall area blocks the water vapor in the environment, the water vapor needs to pass through the barrier wall area to enter the gate driving area before entering the gate driving area, the difficulty of the water vapor entering the gate driving area is increased, the water vapor is consumed in the barrier wall area, the water vapor amount is reduced, the water vapor is further prevented from entering the gate driving area, the effective signal of the gate driving area is prevented from being disturbed, and the display effect of the display device is improved.

Description

Technical Field

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

[0002] In the current display industry, display panels consist of a display area and a non-display area. The non-display area typically utilizes GDL (gate driver less) technology, utilizing the original array manufacturing process of liquid crystal display panels to fabricate the driver circuitry for the horizontal scan lines on the substrate surrounding the display area, enabling it to replace an external integrated circuit board. However, the wiring space in the non-display area is limited. Under rigorous reliability testing conditions of high temperature and high humidity (for example, 85°C and 85% humidity), the vias in the GDL area are easily affected by external moisture, leading to corrosion of multiple drive metal layers and the ITO (Indium Tin Oxide) layer that serves as a bridge between the multiple drive metal layers, causing the bridges between the multiple drive metal layers to fail, thus affecting the normal display of the display device. Summary of the Invention

[0003] The present application provides a display panel and a display device to solve the technical problem that the electrical connection failure between multiple metal layers in the GDL area affects the normal display of the display device.

[0004] A first aspect of the present application provides a display panel. The display panel includes a display area and a non-display area, wherein the non-display area surrounds the display area, and the non-display area includes a gate drive area and a retaining wall area, wherein the retaining wall area is provided outside the gate drive area, and the retaining wall area is configured to consume water vapor in the non-display area to prevent the water vapor from entering the gate drive area.

[0005] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0006] The display panel provided by the embodiment of the first aspect of the present application blocks water vapor in the environment by setting a retaining wall area on the periphery of the gate driving area. Before entering the gate driving area, water vapor needs to pass through the retaining wall area to enter the gate driving area, thereby increasing the difficulty of water vapor entering the gate driving area. In addition, water vapor will be consumed in the retaining wall area to reduce the amount of water vapor, thereby further preventing water vapor from entering the gate driving area, ensuring that the effective signal in the gate driving area is not interfered with, and improving the display effect of the display device.

[0007] In some embodiments, the retaining wall region includes a conductive layer and a metal layer stacked along a first direction and electrically connected, and at least one of the conductive layer and the metal layer is configured to chemically react with the water vapor to consume the water vapor.

[0008] In some embodiments, the metal layer includes a first metal layer, and a height of the first metal layer along the first direction is greater than a total height of the gate driving region along the first direction.

[0009] In some embodiments, the metal layer further includes a second metal layer, the second metal layer is located inside the first metal layer, and a height of the first metal layer along the first direction is greater than a height of the second metal layer along the first direction.

[0010] In some embodiments, the metal layer further includes: a third metal layer, the heights of the first metal layer, the second metal layer, and the third metal layer decrease sequentially along the first direction, and the third metal layer is located inside the second metal layer.

[0011] In some embodiments, the retaining wall area also includes: a first insulating layer, a second insulating layer, a third insulating layer and a substrate stacked in sequence along the first direction, the conductive layer is connected to the first metal layer, the second metal layer and the third metal layer on the side away from the substrate, the first metal layer is arranged on the side of the first insulating layer away from the substrate, the second metal layer is provided with a first via hole on the side away from the substrate, and the third metal layer is provided with a second via hole on the side away from the substrate, and the conductive layer is electrically connected to the second metal layer and the third metal layer through the first via hole and the second via hole respectively.

[0012] In some embodiments, the conductive layer includes a first connecting segment, a second connecting segment, a transition segment, and a third connecting segment connected in sequence, the first connecting segment is connected to the first metal layer, the second connecting segment is connected to the second metal layer, the third connecting segment is connected to the third metal layer, the second connecting segment and the third connecting segment are connected through the transition segment, and the transition segment is connected to the side of the second insulating layer facing away from the substrate; or, the transition segment is connected to the side of the first insulating layer facing away from the substrate.

[0013] In some embodiments, the metal layer is made of at least one of iron, zinc, aluminum, and magnesium.

[0014] In some embodiments, there are multiple retaining wall regions, and the multiple retaining wall regions are sequentially and serially connected, and / or the multiple retaining wall regions are sequentially arranged along the circumferential direction of the display area and connected in parallel.

[0015] A second embodiment of the present application provides a display device including the above-mentioned display panel. The display device provided by the second embodiment of the present application can prevent moisture from entering the gate drive area, ensuring that the effective signal in the gate drive area of ​​the display device is not interfered with, thereby improving the display effect of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 A top view of a display panel according to an embodiment of the present application;

[0020] Figure 2 A cross-sectional view of a retaining wall region according to an embodiment of the present application;

[0021] Figure 3 A cross-sectional view of a retaining wall region according to another embodiment of the present application;

[0022] Figure 4 A top view of a retaining wall area according to an embodiment of the present application;

[0023] Figure 5 A top view of a plurality of retaining wall regions connected in series according to an embodiment of the present application;

[0024] Figure 6 An electrical connection diagram of multiple retaining wall areas according to an embodiment of the present application;

[0025] Figure 7 This is an electrical connection diagram of multiple retaining wall areas according to another embodiment of the present application;

[0026] Figure 8 This is a top view of multiple retaining wall areas connected in parallel according to another embodiment of the present application.

[0027] Description of reference numerals:

[0028] 100, display panel; A, first direction; 10, display area; 20, gate drive area;

[0029] 30. Retaining wall area; 31. First metal layer; 32. Second metal layer; 33. Third metal layer;

[0030] 34. First insulating layer; 35. Second insulating layer; 351. First via hole;

[0031] 36. third insulating layer; 361. second via hole;

[0032] 37. Conductive layer; 371. First connecting segment; 372. Second connecting segment; 373. Third connecting segment; 374. Transition segment; 38. Substrate. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0035] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures. These relative terms include, for example, "center," "longitudinal," "lateral," "length," "width," "height," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside." Such spatially relative terms are intended to encompass different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or motion state, these directional indications will also change accordingly. For example, an element described as "below" or "beneath" another element or feature will subsequently be oriented as "above" or "above" the other element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0036] In the description of this application, “plurality” means two or more.

[0037] In order to solve the technical problem in the prior art that electrical connection failure between multiple driving metal layers in the GDL region affects the normal display of the display device, the present application provides a display panel 100, which includes a display area 10 and a non-display area.

[0038] Specifically, if Figures 1-8 As shown, the non-display area surrounds the outside of the display area 10 and includes: a gate driving area 20 and a barrier wall area 30. The barrier wall area 30 is provided outside the gate driving area 20 and is configured to consume water vapor in the non-display area to prevent the water vapor from entering the gate driving area 20. For example, the barrier wall area 30 is provided outside the gate driving area 20 in the width direction, and the barrier wall area 30 can be provided on both sides of the gate driving area 20 in the width direction.

[0039] It should be noted that the gate drive region 20 refers to the area where the gate driver less (GDL) is installed. The gate drive region 20 includes multiple spaced drive metal layers and ITO (Indium Tin Oxide) layers. The multiple drive metal layers are electrically connected through the ITO layer to generate capacitance. However, in high temperature and high humidity environments, moisture can easily enter the display panel 100 from the edges, causing the electrical connection between the drive metal layers and the ITO layers to fail.

[0040] Based on this, after performing failure analysis, it was shown that the ITO layer covering the driving metal layer was not dense, causing the water vapor entering the display panel 100 to pass through the ITO layer and contact the driving metal layer, causing the driving metal layer to be corroded and causing electrical connection failure, which in turn affects the normal display of the display device. If the hole-turning method is changed to a direct bridge method, the static electricity cannot be effectively released, resulting in other display problems. If the process capability is improved to improve the density of the ITO layer, the density of the ITO layer cannot be fully improved due to the limited improvement in process capability. In addition, if a simple physical method is used to block, since the water vapor molecules are small, the physical blocking method is incomplete, and the blocking material and process requirements are high, the blocking effect is poor.

[0041] Since water vapor enters from the outside of the display panel 100 and flows inward, the embodiment of the present application provides a barrier region 30. The barrier region 30 is located outside the gate drive region 20. That is, after water vapor enters the display panel 100, it first contacts the barrier region 30 and flows from the barrier region 30 to the gate drive region 20. The barrier region 30 consumes water vapor in the non-display area to prevent it from entering the gate drive region 20. In other words, the barrier region 30 can reduce the amount of water vapor in the non-display area, thereby preventing water vapor from entering the gate drive region 20.

[0042] Therefore, by setting a retaining wall area 30 on the periphery of the gate driving area, the retaining wall area 30 is used to block the water vapor in the environment. Before entering the gate driving area 20, the water vapor needs to pass through the retaining wall area to enter the gate driving area 20, so as to increase the difficulty of the water vapor entering the gate driving area 20. In addition, the water vapor will be consumed in the retaining wall area 30 to reduce the amount of water vapor, thereby further preventing the water vapor from entering the gate driving area 20, thereby improving the reliability of the electrical connection between the driving metal layer and the ITO layer, ensuring that the effective signal of the gate driving area 20 is not interfered with, and improving the display effect of the display device.

[0043] In some embodiments, the retaining wall region 30 includes a conductive layer 37 and a metal layer stacked and electrically connected along the first direction A. At least one of the conductive layer 37 and the metal layer is configured to electrochemically react with water vapor to consume the water vapor. Figure 2 As shown, the first direction A is perpendicular to the surface of the display panel 100. A galvanic effect can be generated between the metal layer and the water vapor, and a chemical reaction can occur to consume the water vapor, preventing the water vapor from entering the gate driving area 20 and ensuring the display effect.

[0044] In some embodiments, the metal layer includes a first metal layer 31, and the height of the first metal layer 31 along the first direction A is greater than the total height of the gate driving region 20 along the first direction A. For example, the retaining wall region 30 includes a substrate 38, and the substrate 38 and the first metal layer 31 are respectively disposed on both sides of the retaining wall region 30 along the direction in which the conductive layer 37 and the metal layer are stacked. The "height of the first metal layer 31 along the direction in which the conductive layer 37 and the metal layer are stacked" refers to the distance between a side of the substrate 38 facing away from the first metal layer 31 and a side of the first metal layer 31 facing away from the substrate 38.

[0045] Therefore, on the one hand, the space of the non-display area can be reasonably utilized, and the height of the retaining wall area 30 can be increased to improve the shielding effect of water vapor; on the other hand, the height of the first metal layer 31 is relatively high, and water vapor can chemically react with the conductive layer 37 at the first metal layer 31 and be consumed, so as to further prevent water vapor from entering the gate drive area 20.

[0046] Furthermore, the first metal layer 31 is located at the outermost side of the barrier region 30 , so that water vapor entering the display panel 100 first contacts the first metal layer 31 , thereby reducing the amount of water vapor.

[0047] In some embodiments, as Figure 2 and Figure 3 As shown, the metal layer further includes a second metal layer 32, which is located inside the first metal layer 31, and the height of the first metal layer 31 along the first direction A is greater than the height of the second metal layer 32 along the first direction A. Therefore, the first metal layer 31 and the second metal layer 32 can chemically react with water vapor at different heights to consume water vapor at different heights through the chemical reaction, thereby reducing the amount of water vapor and preventing water vapor from entering the gate driving region 20.

[0048] Furthermore, if Figure 2 and Figure 3 As shown, the metal layer may further include: a third metal layer 33 . The heights of the first metal layer 31 , the second metal layer 32 , and the third metal layer 33 decrease sequentially along the first direction A, and the third metal layer 33 is located inside the second metal layer 32 .

[0049] Therefore, after water vapor enters the retaining wall area 30, it can preferentially contact the conductive layer 37 and the first metal layer 31 to undergo a chemical reaction to consume the first layer; then contact the conductive layer 37 and the second metal layer 32 to undergo a chemical reaction to consume the second layer; then contact the conductive layer 37 and the third metal layer 33 to undergo a chemical reaction to consume the third layer. The three metal layers are at different heights, so that no water vapor can enter the gate drive area 20, thereby ensuring the display effect of the display device.

[0050] In some embodiments, as Figure 2 and Figure 3As shown, the retaining wall region 30 further includes: a first insulating layer 34, a second insulating layer 35, a third insulating layer 36, and a substrate 38, stacked sequentially along a first direction A. A conductive layer 37 is connected to the first metal layer 31, the second metal layer 32, and the third metal layer 33 on the side facing away from the substrate 38. The first metal layer 31 is provided on the side of the first insulating layer 34 facing away from the substrate 38. A first via 351 is provided on the side of the second metal layer 32 facing away from the substrate 38, and a second via 361 is provided on the side of the third metal layer 33 facing away from the substrate 38. The conductive layer 37 is electrically connected to the second metal layer 32 and the third metal layer 33 through the first via 351 and the second via 361, respectively. For example, the first via 351 is located above the second metal layer 32, and the second via 361 is located above the third metal layer 33.

[0051] Therefore, by setting the first insulating layer 34, the second insulating layer 35 and the third insulating layer 36, it is possible to block water vapor, and the setting of the first via hole 351 and the second via hole 361 makes it easier for water vapor to accumulate at the first via hole 351 and the second via hole 361, reducing the migration and diffusion of water vapor to the inner gate drive area 20. The setting of the first via hole 351 and the second via hole 361 can facilitate the release of static electricity to ensure the structural stability of the display device.

[0052] In some embodiments, as Figure 2 and Figure 3 As shown, the conductive layer 37 includes a first connecting segment 371, a second connecting segment 372, a transition segment 374 and a third connecting segment 373 connected in sequence. The first connecting segment 371 is connected to the first metal layer 31, the second connecting segment 372 is connected to the second metal layer 32, and the third connecting segment 373 is connected to the third metal layer 33. The second connecting segment 372 and the third connecting segment 373 are connected through the transition segment 374. For example, the first connecting segment 371 is bonded to the first metal layer 31 to increase the contact area between the two so as to facilitate a chemical reaction with water vapor; the second connecting segment 372 is bonded to the second metal layer 32 to increase the contact area between the two so as to facilitate a chemical reaction with water vapor; the third connecting segment 373 is connected to the third metal layer 33 to increase the contact area between the two so as to facilitate a chemical reaction with water vapor, and the second connecting segment 372 and the third connecting segment 373 are connected through the transition segment 374.

[0053] exist Figure 2 In the example, the transition section 374 is connected to the side of the second insulating layer 35 away from the substrate 38, so that the height of the middle part of the width direction of the retaining wall area 30 can be increased to improve the effect of blocking water vapor; or Figure 3In the example, the transition section 374 is connected to the side of the first insulating layer 34 away from the substrate 38, so that the conductive layer 37 can maintain a downward gradient, so that water vapor can more easily enter the first via hole 351, facilitate water vapor to be retained in the first via hole 351, and facilitate water vapor to undergo chemical reactions for consumption, thereby preventing water vapor from entering the gate drive area 20.

[0054] In some embodiments, the metal layer is made of at least one of iron, zinc, aluminum, and magnesium. To make the barrier region 30 more susceptible to electrochemical reactions with water vapor, the metal layer is made of one or more of iron, zinc, aluminum, and magnesium, allowing the metal layer to more readily undergo an electrochemical reaction with water vapor, thereby further preventing water vapor from entering the gate drive region 20. Furthermore, the driving metal layer is made of copper. Compared to copper, iron, zinc, aluminum, and magnesium are more susceptible to electrochemical reactions with water vapor. Furthermore, even if there is some water vapor within the gate drive region 20, the chemical properties of the metal layer can be utilized to cause the water vapor to preferentially undergo an electrochemical reaction with the metal layer, thereby protecting the gate drive region 20.

[0055] In some embodiments, as Figure 5 and Figure 6 As shown, there are multiple retaining wall regions 30, and the multiple retaining wall regions 30 are sequentially and serially connected along the display area 10, and / or the multiple retaining wall regions 30 are sequentially arranged along the circumferential direction of the display area 10 and connected in parallel. Figure 5 and Figure 6 As shown, when multiple retaining wall areas 30 are connected in series, the third metal layer 33 of each retaining wall area 30 can be connected in sequence to realize the series connection of multiple retaining wall areas 30 to form a retaining wall area group. Both ends of the retaining wall area group are third metal layers 33, wherein the third metal layer 33 at one end is connected to VGH (Vgatehigh, high potential), and the third metal layer 33 at the other end is connected to VGL (Vgatelow, low potential), and a loop line is added at the connection point to increase the resistance value and protect the VGH and VGL signal output points; after the water vapor contacts under the electromigration movement, the primary battery effect is generated between the metals, which can consume the water vapor. In this way, the water vapor consumption and the water vapor blocking effect can be improved to ensure the display effect of the display device. Or, as Figure 7 and Figure 8As shown, multiple retaining wall regions 30 are connected in parallel along the circumferential direction of the display area 30. In this way, when a single retaining wall region fails, it will not affect other retaining wall regions. Furthermore, multiple retaining wall regions 30 are sequentially and serially connected along the display area 10. Multiple retaining wall regions 30 are sequentially arranged and connected in parallel along the circumferential direction of the display area 10. For example, multiple retaining wall regions 30 are connected in parallel along the circumferential direction of the display area 10. Each of the above retaining wall regions 30 is connected in series with multiple retaining wall regions along the width direction or length direction (perpendicular to the first direction A) of the display area 10 to ensure the display effect of the display device.

[0056] The present application also provides a display device, which includes the above-mentioned display panel 100. By setting a retaining wall area 30 on the periphery of the gate drive area, the retaining wall area 30 is used to block water vapor in the environment. Before entering the gate drive area 20, water vapor needs to pass through the retaining wall area to enter the gate drive area 20, thereby increasing the difficulty of water vapor entering the gate drive area 20. In addition, water vapor will be consumed in the retaining wall area 30 to reduce the amount of water vapor, thereby further preventing water vapor from entering the gate drive area 20, thereby improving the reliability of the electrical connection between the driving metal layer and the ITO layer, ensuring that the effective signal of the gate drive area 20 is not interfered with, and improving the display effect of the display device.

[0057] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0058] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0059] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A display panel, characterized in that: include: A display area and a non-display area, wherein the non-display area surrounds the outside of the display area, and the non-display area includes: Gate drive region; a retaining wall region, the retaining wall region being arranged outside the gate drive region, the retaining wall region being configured to consume water vapor in the non-display region to prevent the water vapor from entering the gate drive region, the retaining wall region comprising a conductive layer and a metal layer stacked and electrically conductive along a first direction, at least one of the conductive layer and the metal layer being configured to chemically react with the water vapor to consume the water vapor, the metal layer comprising a first metal layer and a second metal layer, the height of the first metal layer along the first direction being greater than the total height of the gate drive region along the first direction, the second metal layer being located inside the first metal layer, and the height of the first metal layer along the first direction being greater than the height of the second metal layer along the first direction; The retaining wall area also includes a first insulating layer, a second insulating layer and a substrate stacked in sequence along the first direction, the conductive layer is connected to the side of the first metal layer and the second metal layer facing away from the substrate, the first metal layer is arranged on the side of the first insulating layer facing away from the substrate, and the second metal layer is provided with a first via hole on the side facing away from the substrate, and the conductive layer is electrically connected to the second metal layer through the first via hole.

2. The display panel according to claim 1, wherein: The metal layer further includes a third metal layer. The heights of the first metal layer, the second metal layer, and the third metal layer decrease sequentially along the first direction, and the third metal layer is located inside the second metal layer.

3. The display panel according to claim 2, wherein: The retaining wall area also includes: a third insulating layer arranged between the second insulating layer and the substrate, the conductive layer is also connected to the side of the third metal layer facing away from the substrate, a second via is provided on the side of the third metal layer facing away from the substrate, and the conductive layer is electrically connected to the third metal layer through the second via.

4. The display panel according to claim 3, wherein: The conductive layer includes a first connecting section, a second connecting section, a transition section and a third connecting section connected in sequence, the first connecting section is connected to the first metal layer, the second connecting section is connected to the second metal layer, the third connecting section is connected to the third metal layer, the second connecting section and the third connecting section are connected through the transition section, and the transition section is connected to the side of the second insulating layer facing away from the substrate; or, the transition section is connected to the side of the first insulating layer facing away from the substrate.

5. The display panel according to claim 1, wherein: The material of the metal layer is at least one of iron, zinc, aluminum and magnesium.

6. The display panel according to claim 1, wherein: There are multiple retaining wall areas, and the multiple retaining wall areas are connected in sequence and in series, and / or the multiple retaining wall areas are arranged in sequence along the circumferential direction of the display area and connected in parallel.

7. A display device, characterized in that: The device comprises a display panel according to any one of claims 1 to 6.

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