Display panel and display device

Abstract

The invention discloses a display panel and a display device, the display panel comprises an array substrate, an opposite substrate and frame glue, and the display panel comprises a display area and a non-display area; in the non-display area, the array substrate comprises a substrate, a first metal layer, an insulating layer, a second metal layer, a passivation layer, a transparent conductive layer and an alignment film which are sequentially arranged. The non-display area comprises a corrosion area, a spacer area and a conduction area, the first metal layer comprises a first metal wire of the conduction area and a second metal wire of the corrosion area, and the second metal layer comprises a metal strip; the passivation layer is provided with a plurality of first via holes and second via holes, the first via holes expose the first metal layer, the second via holes expose the second metal layer, and the transparent conductive layer extends from the conduction region to the corrosion region, is electrically connected with the first metal wire at least through the first via holes in the conduction region, and is in contact with the second metal wire through the first via holes in the corrosion region; and contacting with the metal strip through the second via hole. Through the arrangement, the problem that the metal wires of the display panel are easy to corrode is solved.

Description

Technical Field

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

[0002] TFT-LCD (Thin Film Transistor Liquid Crystal Display) holds an unshakable position in the large, medium, and small flat panel display market thanks to its features: low voltage and low power consumption; flat panel structure; passive display (no glare, no eye irritation, and independent control of a dedicated light source for adjustable product brightness); large amounts of displayed information; easy colorization; no electromagnetic radiation; and long service life. As consumer demands continue to rise, TFT-LCD products require continuous upgrades, such as the trend toward narrower bezel designs. These narrow or borderless designs impose even stricter requirements on high-temperature and high-humidity testing of LCD panels.

[0003] For narrow-border products or borderless products, due to the narrow product borders, the alignment film spreads to the frame glue coating position and exceeds the frame glue boundary. Due to the poor bonding ability between the alignment film and the frame glue, and the alignment film's anti-moisture absorption ability is weakened under high temperature and high humidity conditions, during high temperature and high humidity tests, water vapor can easily enter the display panel along the bonding point between the alignment film and the frame glue, causing the metal wiring to be easily corroded, affecting the performance of the display panel. Summary of the Invention

[0004] The present application mainly provides a display panel and a display device to solve the problem in the related art that metal wiring of narrow-frame or frameless display panels is easily corroded.

[0005] To solve the above technical problems, the present application adopts a technical solution: providing a display panel, comprising an array substrate and an opposing substrate disposed opposite to each other, and a sealant connected between the array substrate and the opposing substrate; the display panel comprises a display area and a non-display area disposed periphery of the display area; In the non-display area, the array substrate includes a substrate, a first metal layer, an insulating layer, a second metal layer, a passivation layer, a transparent conductive layer and an alignment film arranged in sequence; The non-display area includes a corrosion area, a spacer area and a conductive area arranged in sequence, and the corrosion area is located on a side of the spacer area away from the display area; The first metal layer includes a first metal trace and a second metal trace that are spaced apart, the first metal trace is disposed in the conductive area, and the second metal trace is disposed in the corrosion area; The second metal layer includes at least one metal strip, the metal strip is at least located in the corrosion area, and in the corrosion area, a projection of the at least one metal strip on the first metal layer partially covers the second metal trace; The passivation layer is provided with a plurality of first via holes and a plurality of second via holes at intervals; the first via holes penetrate the passivation layer and the insulating layer and expose a portion of the first metal layer; the second via holes penetrate the passivation layer and expose a portion of the second metal layer; The transparent conductive layer extends from the conduction area to the corrosion area, and in the conduction area, the transparent conductive layer is electrically connected to the first metal trace through at least the first via hole; in the corrosion area, the transparent conductive layer is in contact with the second metal trace through the first via hole, and is in contact with the metal strip through the second via hole.

[0006] In some embodiments, in the corrosion area, at least a portion of the first via penetrates the passivation layer and the insulating layer and exposes a side surface of the metal strip and a top surface of the second metal trace; The transparent conductive layer extends into the first via hole and is electrically connected to the metal strip and the second metal trace respectively.

[0007] In some embodiments, the conductive area is also provided with the metal strip; In the conducting area, a projection of the metal strip on the first metal layer partially covers the first metal trace.

[0008] In some embodiments, in the conductive area, the first via penetrates the passivation layer and the insulating layer and exposes only the top surface of the first metal trace; the transparent conductive layer extends into the first via and is electrically connected only to the first metal trace; Furthermore, in the conductive area, the second via hole penetrates the passivation layer and exposes only a portion of the metal strip, and the transparent conductive layer extends into the second via hole and is in contact with the metal strip.

[0009] In some embodiments, the number of the second via holes in the conductive area is less than the number of the second via holes in the corrosion area; and / or, the area of the second via hole in the conductive region is smaller than the area of the second via hole in the corrosion region; and / or, the number of the first via holes in the conductive area is smaller than the number of the first via holes in the corrosion area; And / or, the area of the first via hole in the conductive region is smaller than the area of the first via hole in the corrosion region.

[0010] In some embodiments, the conductive area and the corrosion area are both provided with a plurality of the metal strips; In the corrosion area, the plurality of metal strips are spaced apart from each other and distributed in an array; And / or, in the conductive area, the plurality of metal strips are spaced apart from each other and distributed in an array.

[0011] In some embodiments, the conductive area and the corrosion area are both provided with a plurality of the metal strips; In the corrosion zone, any number of the plurality of metal strips are connected to each other; And / or, within the conductive region, any number of the plurality of metal strips are connected to each other.

[0012] In some embodiments, a plurality of the metal strips are provided in the corrosion zone; In the corrosion area, the number of the second via holes on a side away from the spacer area is greater than the number of the second via holes on a side close to the spacer area; and / or, the number of the first via holes on a side away from the spacer is greater than the number of the first via holes on a side close to the spacer; and / or, an area of the second via hole on a side away from the spacer region is larger than an area of the second via hole on a side close to the spacer region; And / or, the area of the first via hole on the side away from the spacer region is larger than the area of the first via hole on the side close to the spacer region.

[0013] In some embodiments, the second metal trace is a single metal line extending along an edge of the display panel in a meandering manner.

[0014] In some embodiments, the first metal routing is in a cross shape, and the first metal routing includes a plurality of vertical routings spaced apart along a first direction, and a plurality of horizontal routings spaced apart along a second direction, and the plurality of horizontal routings intersect with the plurality of vertical routings in a one-to-one correspondence; The second metal traces include a plurality of long lines and a plurality of short lines, wherein the plurality of long lines are perpendicular to the side surface of the display panel and are spaced apart from each other, and the plurality of short lines correspondingly connect the ends of two adjacent long lines; The line width of the second metal wiring is smaller than the line width of the first metal wiring; and / or, In the first direction, the distance between two adjacent long lines is smaller than the distance between two adjacent vertical lines.

[0015] In some embodiments, the alignment film covers a side of the transparent conductive layer away from the substrate and extends into the first via hole and the second via hole respectively; The material of the alignment film is polyimide; the material of the transparent conductive layer is indium tin oxide.

[0016] To solve the above technical problems, another technical solution adopted by the present application is to provide a display device, comprising: Any display panel as described above; The backlight module is arranged on one side of the display panel and is used to provide backlight for the display panel.

[0017] The beneficial effects of the present application are: different from the prior art, the present application discloses a display panel and a display device, the display panel includes an array substrate and an opposing substrate arranged opposite to each other, and a frame glue connected between the array substrate and the opposing substrate; the display panel includes a display area and a non-display area arranged outside the display area; in the non-display area, the array substrate includes a substrate, a first metal layer, an insulating layer, a second metal layer, a passivation layer, a transparent conductive layer and an alignment film arranged in sequence; the non-display area includes a corrosion area, a spacer area and a conduction area arranged in sequence, and the corrosion area is located on the side of the spacer area away from the display area; the first metal layer includes a first metal trace and a second metal trace arranged in intervals, the first metal trace is arranged in the conduction area, and the second metal trace is arranged in the corrosion area. The second metal layer includes at least one metal strip, which is located at least in the corrosion area, and in the corrosion area, the projection of the metal strip on the first metal layer covers the second metal trace; the passivation layer is provided with a plurality of first vias and a plurality of second vias at intervals, the first vias penetrate the passivation layer and the insulating layer and expose a portion of the first metal layer, and the second vias penetrate the passivation layer and expose a portion of the second metal layer; the transparent conductive layer extends from the conduction area to the corrosion area, and in the conduction area, the transparent conductive layer is electrically connected to the first metal trace through at least the first via; in the corrosion area, the transparent conductive layer is in contact with the second metal trace through the first via, and is in contact with the metal strip through the second via. Through the above arrangement, the first metal trace itself is energized, and the voltage of the first metal trace in the conductive area can be conducted to the metal strip and the second metal trace in the corrosion area through the transparent conductive layer. When external water vapor enters the display panel through the alignment film, it can first contact the metal strip exposed at the second via position and the second metal trace exposed at the first via position in the corrosion area, and an electrochemical reaction occurs to corrode the metal strip and the second metal trace. The second metal layer and the second metal trace at the edge of the array substrate are used as sacrificial metals to consume most of the water vapor. Moreover, since the first metal trace and the second metal trace are separated by the spacer area, the corrosion of the second metal trace will not affect the first metal trace, effectively avoiding the corrosion of the first metal trace by water vapor and the influence on other components in the display area. This effectively solves the problem of easy corrosion of metal traces in narrow-frame or frameless display panels in the related art, and improves the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which: Figure 1 1 is a schematic top view of the structure of an embodiment of a display panel provided in the first embodiment of the present application; Figure 2 yes Figure 1 A partially enlarged schematic diagram of a first embodiment of a region S of a display panel is provided; Figure 3 yes Figure 2 A schematic diagram of the A1-A2 cross section of the display panel is provided; Figure 4 yes Figure 2 A schematic diagram of the A3-A4 cross section of the display panel is provided; Figure 5 yes Figure 1 A partially enlarged schematic diagram of a second embodiment of a region S of a display panel is provided; Figure 6 yes Figure 1 A partially enlarged schematic diagram of a third embodiment of a region S of a display panel is provided; Figure 7 yes Figure 1 A partially enlarged schematic diagram of a fourth embodiment of a region S of a display panel is provided; Figure 8 It is a structural diagram of an implementation of a display device provided in the second embodiment of the present application.

[0019] Figure Number: 300. Display device; 200. Backlight source; 100. Display panel; 1. Array substrate; 11. Substrate; 12. First metal layer; 121. First metal trace; 122. Second metal trace; 13. Insulation layer; 14. Second metal layer; 141. Metal strip; 15. Passivation layer; 151. First via hole; 152. Second via hole; 16. Transparent conductive layer; 17. Alignment film; 2. Counter substrate; 3. Frame glue; 4. Circuit board; 5. Corrosion area; 6. Spacer area; 7. Conductive area; X. Display area; F. Non-display area; B. Bonding area; L1. First direction; L2. Second direction. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only 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.

[0021] The terms "first", "second" and "third" in the embodiments of the present application are only used for descriptive purposes and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally also include steps or units that are not listed, or may optionally also include other steps or units inherent to these processes, methods, products or devices.

[0022] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] See Figures 1 to 7 , Figure 1 1 is a schematic top view of a display panel according to the first embodiment of the present application. Figure 2 yes Figure 1 A partially enlarged schematic diagram of a first embodiment of a region S of a display panel is provided, Figure 3 yes Figure 2 A1-A2 cross-sectional diagram of the display panel provided, Figure 4 yes Figure 2 A3-A4 cross-sectional diagram of the display panel provided, Figure 5 yes Figure 1 A partial enlarged schematic diagram of a second embodiment of the display panel region S is provided. Figure 6 yes Figure 1 A partially enlarged schematic diagram of a third embodiment of the display panel region S is provided. Figure 7 yes Figure 1 A partially enlarged schematic diagram of a fourth embodiment of a display panel area S is provided.

[0024] See also Figures 1 to 7 The first embodiment of the present application provides a display panel 100, which includes an array substrate 1 and an opposing substrate 2 arranged opposite to each other, and a sealant 3 connected between the array substrate 1 and the opposing substrate 2. The display panel 100 includes a display area X and a non-display area F arranged around the display area X. Specifically, as Figure 1As shown, in one embodiment, the size of the array substrate 1 is larger than the size of the counter substrate 2, and one side of the array substrate 1 protrudes from the counter substrate 2 to form a bonding area B, which is used to bond other components such as the circuit board 4.

[0025] See also Figures 2 to 7 In the non-display area F, the array substrate 1 includes a substrate 11, a first metal layer 12, an insulating layer 13, a second metal layer 14, a passivation layer 15, a transparent conductive layer 16 and an alignment film 17 stacked in sequence. The insulating layer 13 is arranged between the first metal layer 12 and the second metal layer 14 to separate and insulate the first metal layer 12 and the second metal layer 14.

[0026] For details, see Figures 2 to 7 The non-display area F includes a corrosion area 5, a spacer area 6 and a conductive area 7 arranged in sequence. The spacer area 6 is located between the corrosion area 5 and the conductive area 7. The corrosion area 5 is located on the side of the spacer area 6 away from the display area X. The corrosion area 5 is arranged close to the edge of the array substrate 1.

[0027] See also Figures 2 to 7 The first metal layer 12 includes a first metal trace 121 and a second metal trace 122 spaced apart from each other. That is, the first metal trace 121 and the second metal trace 122 are located on the same metal layer. The first metal trace 121 is located in the conductive area 7, and the second metal trace 122 is located in the corrosion area 5. The first metal trace 121 and the second metal trace 122 are separated by the spacer 6, and the first metal trace 121 and the second metal trace 122 are not located in the spacer 6. In some embodiments, the first metal layer 12 can be the VCOM trace of the display panel 100. That is, the VCOM trace can be divided into two spaced apart parts. The second metal trace 122 in the corrosion area 5 serves as a sacrificial metal, and the first metal trace 121 in the conductive area 7 serves as the original VCOM trace to achieve the corresponding function.

[0028] See also Figures 2 to 7 The second metal layer 14 includes at least one metal strip 141. The metal strip 141 is located at least in the corrosion zone 5. Specifically, the metal strip 141 can be located only in the corrosion zone 5 or can be disposed in both the corrosion zone 5 and the conductive zone 7. In the corrosion zone 5, the projection of the metal strip 141 on the first metal layer 12 partially covers the second metal trace 122. The metal strip 141 is located on top of the second metal trace 122 and is isolated from the second metal trace 122 by the insulating layer 13.

[0029] See also Figures 2 to 7A plurality of first vias 151 and a plurality of second vias 152 are alternately provided in the passivation layer 15. The first vias 151 penetrate the passivation layer 15 and the insulating layer 13 and expose a portion of the first metal layer 12. Specifically, first vias 151 are provided in both the corrosion region 5 and the conductive region 7. The first vias 151 in the corrosion region 5 penetrate the passivation layer 15 and the insulating layer 13 and expose a portion of the second metal trace 122. Specifically, the first vias 151 in the corrosion region 5 expose a portion of the second metal trace 122 away from the surface of the substrate 11; the first vias 151 in the conductive region 7 penetrate the passivation layer 15 and the insulating layer 13 and expose a portion of the first metal trace 121. Specifically, the first vias 151 in the conductive region 7 expose a portion of the first metal trace 121 away from the surface of the substrate 11. That is, the first via 151 is provided corresponding to the first metal trace 121 and the second metal trace 122 of the first metal layer 12 , and the first via 151 is staggered with the metal strip 141 of the second metal layer 14 .

[0030] Second via 152 penetrates passivation layer 15 and exposes a portion of second metal layer 14. Since second metal layer 14 includes at least one metal strip 141, and metal strip 141 is located at least within corrosion zone 5, second via 152 is located at least within corrosion zone 5. Specifically, metal strip 141 may be located only within corrosion zone 5, and second via 152 may also be located only within corrosion zone 5. Metal strip 141 may also be located in both corrosion zone 5 and conductive zone 7, and second via 152 may be located in both corrosion zone 5 and conductive zone 7. Specifically, second via 152 penetrates passivation layer 15 and exposes a portion of second metal layer 14. Specifically, second via 152 exposes the surface of metal strip 141 away from substrate 11. That is, second via 152 is provided corresponding to metal strip 141 of second metal layer 14.

[0031] See also Figures 2 to 7 The transparent conductive layer 16 extends from the conductive area 7 to the corrosion area 5. That is, the transparent conductive layer 16 is provided in the conductive area 7, the spacer area 6, and the corrosion area 5, and the transparent conductive layer 16 in the conductive area 7 and the corrosion area 5 is connected. In the conductive area 7, the transparent conductive layer 16 is electrically connected to the first metal trace 121 through at least the first via 151. Specifically, the first metal trace 121 in the conductive area 7 is electrically connected and can be a metal signal line of the display panel 100. The transparent conductive layer 16 in the conductive area 7 contacts the first metal trace 121 through the first via 151, thereby achieving electrical connection. Specifically, in some embodiments, the material of the transparent conductive layer 16 can be indium tin oxide (ITO). In other embodiments, the transparent conductive layer 16 can also be set to other conductive materials.

[0032] In the corrosion region 5, the transparent conductive layer 16 is disposed in contact with the second metal trace 122 through the first via 151, and is disposed in contact with the metal strip 141 through the second via 152. Specifically, the transparent conductive layer 16 in the corrosion region 5 contacts the second metal trace 122 exposed by the first via 151 through the first via 151, and contacts the second metal layer 14, i.e., the metal strip 141, exposed by the second via 152 through the second via 152. This allows the voltage of the first metal trace 121 in the conductive region 7 to be respectively transmitted to the second metal trace 122 and the metal strip 141 in the corrosion region 5 through the transparent conductive layer 16, thereby facilitating electrical connection between the second metal trace 122 and the metal strip 141 and the transparent conductive layer 16.

[0033] See also Figures 2 to 7 In some embodiments, the alignment film 17 covers the side of the transparent conductive layer 16 away from the substrate 11. Specifically, the alignment film 17 covers the surface of the transparent conductive layer 16 away from the substrate 11 and extends into the first via hole 151 and the second via hole 152 respectively. The display panel 100 is a display panel 100 with a narrow frame or no frame.

[0034] It can be understood that in the embodiment of the present application, the first metal layer 12 of the array substrate 1 in the non-display area F is configured to include a first metal trace 121 and a second metal trace 122 spaced apart from each other, the second metal trace 122 is configured in the corrosion area 5 located outside the conductive area 7, the corrosion area 5 is configured close to the edge of the array substrate 1, and at least a second metal layer 14 including at least one metal strip 141 is configured in the corrosion area 5, a portion of the first metal layer 12 is exposed by the first via hole 151, and a portion of the second metal layer 14 is exposed by the second via hole 152, the transparent conductive layer 16 extends from the conductive area 7 into the corrosion area 5, and is electrically connected to the first metal trace 121 through the first via hole 151 in the conductive area 7, and is electrically connected to the first metal trace 121 through the second via hole 152 in the corrosion area 5. A via 151 is provided in contact with the second metal trace 122, and is in contact with the metal strip 141 through the second via 152. The first metal trace 121 itself is energized, and the voltage of the first metal trace 121 in the conductive area 7 can be conducted to the metal strip 141 and the second metal trace 122 in the corrosion area 5 through the transparent conductive layer 16. When a high-temperature and high-humidity test is performed or the display panel 100 is operating normally, when external water vapor enters the display panel 100 through the alignment film 17, it can first contact the metal strip 141 at the position of the second via 152 and the second metal trace 122 at the position of the first via 151 in the corrosion area 5, causing an electrochemical reaction to corrode the metal strip 141 and the second metal trace 122 and consume the water vapor.

[0035] The second metal layer 14 and the second metal trace 122 at the edge of the array substrate 1 serve as sacrificial metals to consume most of the water vapor. Since the first metal trace 121 and the second metal trace 122 are separated by the spacer 6, corrosion of the second metal trace 122 does not affect the first metal trace 121, effectively preventing water vapor from corroding the first metal trace 121 and affecting other components and metal traces within the display area X. This also prevents corrosion from entering the display area X along the second metal trace 122, which would otherwise cause metal corrosion within the display area X to cause image abnormalities during high-temperature and high-humidity testing. This arrangement effectively addresses the issue of metal traces being susceptible to corrosion in narrow-frame or borderless display panels in the related art, as well as the issue of image abnormalities caused by corrosion during high-temperature and high-humidity testing or during normal display operation. This improves the corrosion resistance of the narrow-frame or borderless display panel 100 and enhances the performance of the display panel 100. At the same time, the transparent conductive layer 16 connects the first metal trace 121 and the second metal trace 122 and the metal strip 141 in the corrosion area 5, respectively. After the voltage of the first metal trace 121 is transmitted to the second metal trace 122 and the metal strip 141 through the transparent conductive layer 16, the heat generated by the second metal trace 122 and the metal strip 141 can accelerate the consumption of water vapor. The heat generated by the second metal trace 122 can further heat the metal strip 141 located on top of the second metal trace 122, thereby further accelerating the electrochemical reaction between the metal strip 141, the transparent conductive layer 16, and the water vapor, thereby further increasing the water vapor consumption rate, more effectively preventing the water vapor from diffusing toward the display area X and affecting the first metal trace 121, and further improving display performance.

[0036] Specifically, in some embodiments, the alignment film 17 is at least partially located between the sealant 3 and the substrate 11 , that is, the alignment film 17 extends to the coating location of the sealant 3 . The material of the alignment film 17 is PI (Polyimide). The display panel 100 may be a narrow-frame or borderless display panel. Due to the narrow frame of the display panel 100 , when the alignment film 17 is coated using less precise coating equipment, the alignment film 17 is likely to spread to the connection location between the sealant 3 and the array substrate 1 in the non-display area F and exceed the boundary of the sealant 3 . In other words, the alignment film 17 is likely to spread to the side of the sealant 3 away from the display area X. The alignment film 17 is made of a low-hygroscopic material. Under high temperature and high humidity conditions, the alignment film 17's resistance to moisture absorption is weakened. In other words, the alignment film 17 has enhanced moisture absorption in high temperature and high humidity environments, making it susceptible to moisture absorption. When the display panel 100 is subjected to high temperature and high humidity testing, moisture vapor is likely to come into contact with the alignment film 17 and enter the display panel 100 . In the embodiment of the present application, even if water vapor enters the display panel 100 along the alignment film 17, it will only undergo an electrochemical reaction with the second metal trace 122 and the metal strip 141 of the second metal layer 14 at the positions of the first via 151 and the second via 152 at the edge of the non-display area F, thereby corroding the second metal trace 122 and the second metal layer 14. The first metal trace 121 and the second metal trace 122 are spaced apart by the spacer area 6, and the first metal trace 121 and the remaining traces in the display area X will not be corroded. By only sacrificing the second metal trace 122 and the second metal layer 14, the corrosion resistance of the narrow-border or borderless display panel 100 can be improved, and the display performance of the display panel 100 can be improved.

[0037] Therefore, for a display panel 100 with a narrow frame or no frame, by setting the array substrate 1 to the above-mentioned structure, the alignment film 17 can be coated with a low-precision coating equipment. Even if the alignment film 17 spreads to the coating position of the frame glue 3, it will not have a significant impact on the corrosion resistance of the display panel 100 with a narrow frame or no frame. The precision requirements of the coating equipment for the alignment film 17 can be effectively reduced, and the production cost can be reduced. Optimization and improvement are carried out at the design level, which solves the limitation of large fluctuations in the coating of the alignment film 17 of narrow-frame or no-frame products using PI Inject equipment, and realizes that the alignment film 17 of narrow-frame or no-frame products can be coated with PI Inject equipment.

[0038] Specifically, in some embodiments, other structures such as a driving circuit layer (not shown) and a thin-film transistor layer (not shown) are further provided in the display area X of the array substrate 1. The driving circuit layer and the thin-film transistor layer both include other metal traces. By providing a second metal layer 14 and a second metal trace 122 spaced apart from the first metal trace 121 at the edge position of the non-display area F of the array substrate 1 (in the corrosion area 5), the second metal trace 122 and the second metal layer 14 are sacrificed, thereby protecting the first metal trace 121 in the conductive area 7 from corrosion. At the same time, the remaining metal traces in other structures such as the driving circuit layer and the thin-film transistor layer in the display area X can also be effectively protected from corrosion, which is beneficial to improving the display performance of the display panel 100.

[0039] Specifically, in the corrosion area 5, the projection of the metal strip 141 on the first metal layer 12 partially covers the second metal trace 122, that is, the projection of the second metal layer 14 on the first metal layer 12 in the corrosion area 5 cannot completely cover the second metal trace 122, so that the first via 151 in the corrosion area 5 can penetrate the passivation layer 15 and the insulating layer 13 and expose part of the second metal trace 122, so that the transparent conductive layer 16 in the corrosion area 5 can contact the second metal trace 122 through the first via 151. After the transparent conductive layer 16 is electrically connected to the first metal trace 121 through the first via 151 in the conductive region 7, the transparent conductive layer 16 can conduct the voltage of the first metal trace 121 to the second metal trace 122 in the corrosion region 5. Therefore, after water vapor enters the corrosion region 5, it can undergo an electrochemical reaction with the second metal trace 122 at the first via 151, thereby consuming the water vapor. After the voltage of the first metal trace 121 is conducted to the second metal trace 122, the heat generated by the second metal trace 122 can heat the metal strip 141 located on top of the second metal trace 122, thereby further accelerating the consumption of water vapor and increasing the water vapor consumption rate. The above-mentioned arrangement avoids the projection of the second metal layer 14 on the first metal layer 12 completely covering the second metal trace 122, which results in the inability to penetrate the passivation layer 15 and the insulating layer 13 through the first via 151 to expose the second metal trace 122, and further results in the transparent conductive layer 16 being unable to contact the second metal trace 122 through the first via 151, making it difficult to transmit the voltage of the first metal trace 121 to the second metal trace 122, and further making it difficult for water vapor, the transparent conductive layer 16, and the second metal trace 122 to produce an electrochemical reaction at the first via 151, which results in the problem of difficulty in the second metal trace 122 consuming water vapor at the position of the first via 151.

[0040] Specifically, in the embodiment of the present application, the voltage of the first metal trace 121 of the conductive area 7 is transmitted to the second metal trace 122 in the first via 151 and the second metal layer 14, i.e., the metal strip 141 in the second via 152 in the corrosion area 5 through the transparent conductive layer 16. Since the roughness at the first via 151 and the second via 152 is greater than that at other flat locations, the contact impedance at the first via 151 and the second via 152 is greater than that at the flat locations. The transparent conductive layer 16 is respectively connected to the second metal trace 122 and the metal strip 141. The heat generated by the contact between 141 and the first via 151 and the second via 152 is greater, making it easier for water vapor to concentrate at the first via 151 and the second via 152. The transparent conductive layer 16 / water vapor / second metal trace 122 and the transparent conductive layer 16 / water vapor / metal strip 141 will form an electrochemical reaction at high temperature, causing the second metal trace 122 and the metal strip 141 to be corroded. In this way, most of the water vapor is consumed in the first via 151 and the second via 152, which is more conducive to protecting the first metal trace 121 from corrosion.

[0041] See also Figures 2 to 4 In some embodiments, in the corrosion region 5, at least a portion of the first via 151 penetrates the passivation layer 15 and the insulating layer 13, and exposes the side surface of the metal strip 141 and the top surface of the second metal trace 122. Figure 3 As shown, within the etching region 5, in the cross section A1-A2, the first via 151 located on the far right side penetrates the passivation layer 15 and the insulating layer 13, exposing the side surface of the metal strip 141 and a portion of the top surface of the second metal trace 122. The transparent conductive layer 16 within the etching region 5 extends into the first via 151 and is electrically connected to the metal strip 141 and the second metal trace 122 within the first via 151. Specifically, the transparent conductive layer 16 contacts the side surface of the metal strip 141 and the top surface of the second metal trace 122 within the first via 151. That is, in this embodiment, at least a portion of the first via 151 exists within the etching region 5, allowing the transparent conductive layer 16 to simultaneously contact the metal strip 141 and the second metal trace 122 within the first via 151, thereby achieving electrical connection.

[0042] It can be understood that since the transparent conductive layer 16 extends from the conductive area 7 into the corrosion area 5, and it is the transparent conductive layer 16 that conducts the voltage of the first metal trace 121 in the conductive area 7 to the metal strip 141 and the second metal trace 122 in the corrosion area 5, in this embodiment, by providing some first vias 151, the transparent conductive layer 16 is simultaneously electrically connected to the metal strip 141 and the second metal trace 122 within the same first via 151. Within the same first via 151, water vapor that enters the first via 151 through the alignment film 17 can simultaneously undergo an electrochemical reaction with the metal strip 141 and the second metal trace 122, thereby further increasing the water vapor consumption rate, accelerating the water vapor consumption, and more effectively preventing the water vapor from diffusing toward the display area X, further enhancing the corrosion resistance of the display panel 100, and improving the display performance of the display panel 100.

[0043] In other embodiments, in the corrosion area 5, the first via 151 may also penetrate the passivation layer 15 and the insulating layer 13 and expose only the top surface of the second metal trace 122, and the second via 152 penetrates the passivation layer 15 and exposes only the top surface of the second metal layer 14, i.e., the metal strip 141. Therefore, at the location of the first via 151, the transparent conductive layer 16 is in contact only with the second metal trace 122. Therefore, when water vapor enters the first via 151, an electrochemical reaction occurs only between the transparent conductive layer 16 / water vapor / second metal trace 122, and only the second metal trace 122 is corroded at the location of the first via 151. At the location of the second via 152, the transparent conductive layer 16 is in contact only with the second metal layer 14, i.e., the metal strip 141. Therefore, when water vapor enters the second via 152, an electrochemical reaction occurs only between the transparent conductive layer 16 / water vapor / metal strip 141, and only the metal strip 141 is corroded at the location of the second via 152. The arrangement of the first via hole 151 in the corrosion area 5 can be specifically designed according to needs, and the embodiment of the present application does not limit this.

[0044] See also Figures 2 to 4 、 Figure 6 and Figure 7 In some embodiments, the conductive region 7 is also provided with a metal strip 141. That is, the second metal layer 14 includes a plurality of metal strips 141. The metal strips 141 can be provided in both the conductive region 7 and the corrosion region 5. In the conductive region 7, the projection of the metal strips 141 on the first metal layer 12 partially covers the first metal trace 121. That is, the metal strips 141 in the conductive region 7 are provided on top of the first metal trace 121, and the first metal trace 121 and the metal strips 141 are insulated and separated by the insulating layer 13.

[0045] Specifically, the projection of the second metal layer 14, i.e., the metal strip 141, in the conductive area 7 on the first metal layer 12 cannot completely cover the first metal trace 121, so that the first via 151 in the conductive area 7 can penetrate the passivation layer 15 and the insulating layer 13 and expose a portion of the first metal trace 121. This facilitates the transparent conductive layer 16 in the conductive area 7 to contact the first metal trace 121 through the first via 151, thereby transmitting the voltage of the first metal trace 121 in the conductive area 7 to the second metal trace 122 and the metal strip 141 in the corrosion area 5 through the transparent conductive layer 16. Therefore, after water vapor enters the corrosion area 5, it can contact the second metal trace 122 at the first via 151 and contact the metal strip 141 at the second via 152, thereby generating an electrochemical reaction to consume the water vapor. Avoid the projection of the second metal layer 14 on the first metal layer 12 completely covering the first metal trace 121, which makes it impossible to penetrate the passivation layer 15 and the insulating layer 13 through the first via 151 to expose the first metal trace 121, and further makes it impossible for the transparent conductive layer 16 to contact the first metal trace 121 through the first via 151, making it difficult to transmit the voltage of the first metal trace 121 to the second metal trace 122 and the metal strip 141, affecting the consumption of water vapor by the second metal trace 122 and the metal strip 141.

[0046] It can be understood that by providing the second metal layer 14, i.e., metal strips 141, in both the corrosion region 5 and the conductive region 7, when the second metal traces 122 and metal strips 141 in the corrosion region 5 at the edge of the array substrate 1 are unable to completely consume the water vapor, the water vapor can enter the conductive region 7 and then undergo an electrochemical reaction with the water vapor using the metal strips 141 in the conductive region 7 to further consume the water vapor, thereby further protecting the first metal traces 121 from water vapor corrosion. The provision of the second metal layer 14, i.e., metal strips 141, in both the corrosion region 5 and the conductive region 7 provides stronger protection for the first metal traces 121 and the remaining metal traces and components in the display region X, thereby enhancing the corrosion resistance of the display panel 100.

[0047] In some embodiments, the conductive area 7 is also provided with a metal strip 141. In the conductive area 7, a first via 151 penetrates the passivation layer 15 and the insulating layer 13 and only exposes the top surface of the first metal trace 121. The transparent conductive layer 16 extends into the first via 151 and is electrically connected only to the first metal trace 121. That is, in the conductive area 7, the first via 151 only exposes the top surface of the first metal trace 121 and does not expose the side or top surface of the metal strip 141. The first via 151 is only provided corresponding to the first metal trace 121, and the first via 151 is completely offset from the metal strip 141. For details, please refer to Figure 4In the structure, the transparent conductive layer 16 contacts only the first metal trace 121 through the first via 151 to achieve electrical connection. Within the first via 151, the transparent conductive layer 16 does not contact the metal strip 141. In this embodiment, within the conductive region 7, a second via 152 penetrates the passivation layer 15 and exposes only a portion of the metal strip 141. Specifically, the second via 152 exposes only the top surface of the metal strip 141. The second via 152 does not expose the first metal trace 121. The transparent conductive layer 16 extends into the second via 152 and is in contact with the metal strip 141.

[0048] That is, when the second metal layer 14, i.e., the metal strip 141, is provided in the conductive area 7 and the first metal trace 121 and the metal strip 141 are both present in the conductive area 7, the electrical connection between the transparent conductive layer 16 and the first metal trace 121 occurs only in the first via 151, and the electrical connection between the transparent conductive layer 16 and the second metal layer 14, i.e., the metal strip 141, occurs only in the second via 152. There is no first via 151 or second via 152 that electrically connects the transparent conductive layer 16 to the metal strip 141 and the first metal trace 121 at the same time, thereby The first metal trace 121 is insulated from the metal strip 141. Corrosion of the metal strip 141 within the conductive region 7 does not affect the first metal trace 121. This prevents the transparent conductive layer 16 from being electrically connected to both the metal strip 141 and the first metal trace 121 within the same first via 151 or second via 152. This prevents the transparent conductive layer 16 from being electrically connected to both the metal strip 141 and the first metal trace 121 simultaneously within the same first via 151 or second via 152. When the metal strip 141 comes into contact with moisture and corrodes within the first via 151 or second via 152, the corrosion extends to the first metal trace 121, causing corrosion of the first metal trace 121. This arrangement further consumes moisture within the conductive region 7, i.e., the metal strip 141. This improves the corrosion resistance of the display panel 100 while effectively preventing moisture from contacting and corroding the first metal trace 121, thereby enhancing the performance of the display panel 100.

[0049] In the embodiment of the present application, by providing a second metal layer 14 including at least one metal strip 141, the second metal layer 14 can also play the role of raising the film layer structure of the array substrate 1, and the second metal layer 14 can block the alignment film 17 from diffusing toward the edge of the display panel 100, which can effectively reduce the film thickness of the alignment film 17 at the edge of the display panel 100; at the same time, the second via 152 on the top of the second metal layer 14 can also play the role of storing the alignment film 17, so that in the process of the alignment film 17 diffusing toward the edge of the display panel 100, most of the alignment film 17 is stored at the position of the second via 152 with a lower terrain, further reducing the film thickness of the alignment film 17 at the edge of the display panel 100, which is beneficial to thinning the thickness of the display panel 100, improving the performance of the display panel 100, and broadening the application range of the display panel 100. At the same time, a second via 152 is provided above the second metal layer 14, and the heat generated by the first metal trace 121 or the second metal trace 122 of the first metal layer 12 directly below the second metal layer 14 is used to preheat the metal strip 141 of the second metal layer 14. The heat generated by the first metal layer 12 is used to accelerate the rate of electrochemical corrosion of the transparent conductive layer 16 / water vapor / metal strip 141 in the second via 152, which can further consume water vapor.

[0050] Specifically, in some embodiments, the corrosion zone 5 and the conductive zone 7 are both provided with a second metal layer 14, i.e., a metal strip 141, the number of second vias 152 in the conductive zone 7 is smaller than the number of second vias 152 in the corrosion zone 5, and / or the area of the second vias 152 in the conductive zone 7 is smaller than the area of the second vias 152 in the corrosion zone 5. It can be understood that the corrosion region 5 is located outside the conductive region 7 and is arranged closer to the edge of the array substrate 1. Compared with the second metal layer 14 and the first metal trace 121 in the conductive region 7, the second metal layer 14 and the second metal trace 122 in the corrosion region 5 come into contact with water vapor earlier. By setting the number and / or area of the second vias 152 in the corrosion region 5 to be larger than the number and / or area of the second vias 152 in the conductive region 7, the contact area between the second metal layer 14, i.e., the metal strip 141, and water vapor in the corrosion region 5 can be further increased. The second metal layer 14 in the corrosion region 5 has a stronger ability to consume water vapor, and the consumption of water vapor by the display panel 100 is concentrated in the corrosion region 5, further preventing water vapor from diffusing to the conductive region 7, further improving the protection capability of the first metal trace 121, and improving the corrosion resistance of the display panel 100.

[0051] In some embodiments, the number of first vias 151 in the conductive region 7 is smaller than the number of first vias 151 in the corrosion region 5, and / or the area of the first vias 151 in the conductive region 7 is smaller than the area of the first vias 151 in the corrosion region 5. It will be appreciated that the first vias 151 in the conductive region 7 are primarily used to expose portions of the first metal traces 121, allowing the transparent conductive layer 16 to contact the first metal traces 121, thereby facilitating the conduction of the voltage of the first metal traces 121 to the second metal traces 122 and the metal strips 141 in the corrosion region 5. The number and area of the first vias 151 do not need to be large, as long as they can achieve electrical connection between the transparent conductive layer 16 and the first metal traces 121. The first vias 151 in the corrosion area 5 are provided to enable the transparent conductive layer 16 to contact the second metal traces 122. Thus, the second metal traces 122 can contact the transparent conductive layer 16 and water vapor through the first vias 151 in the corrosion area 5, thereby generating an electrochemical reaction to corrode the second metal traces 122 and consume the water vapor. By setting the number and / or area of the first vias 151 in the corrosion area 5 to be larger than the number and / or area of the first vias 151 in the conductive area 7, the contact area between the second metal traces 122 in the corrosion area 5 and water vapor can be further increased. The second metal traces 122 in the corrosion area 5 have a stronger ability to consume water vapor, concentrating the water vapor consumption of the display panel 100 within the corrosion area 5. This further prevents water vapor from diffusing toward the conductive area 7, further enhancing the protection of the first metal traces 121, and improving the corrosion resistance of the display panel 100.

[0052] See also Figures 2 to 4 、 Figure 6 and Figure 7 In some embodiments, the conductive area 7 and the corrosion area 5 are both provided with a plurality of metal strips 141. Figure 2 and Figure 7 In some embodiments, within the corrosion region 5, multiple metal strips 141 are spaced apart from each other and arranged in an array; and / or within the conductive region 7, multiple metal strips 141 are spaced apart from each other and arranged in an array. It can be understood that water vapor undergoes an electrochemical reaction with the multiple metal strips 141 and the transparent conductive layer 16 at the multiple second vias 152, thereby corroding the metal strips 141. The spacing of the multiple metal strips 141 effectively increases the corrosion path for water vapor, thereby more efficiently consuming water vapor and improving the corrosion resistance of the display panel 100. The array distribution of the multiple metal strips 141 allows for more uniform and effective consumption of water vapor at multiple locations, further increasing the water vapor consumption rate. This also helps simplify the structure of other film layers of the display panel 100, such as the driver circuit layer, and facilitates the preparation and formation of the second metal layer 14, thereby improving the efficiency of the preparation of the second metal layer 14.

[0053] See also Figures 2 to 4、 Figure 6 and Figure 7 In some embodiments, the conductive area 7 and the corrosion area 5 are both provided with a plurality of metal strips 141. Figure 6 In some embodiments, any number of the plurality of metal strips 141 within the corrosion region 5 are interconnected, and / or any number of the plurality of metal strips 141 within the conductive region 7 are interconnected. That is, in this embodiment, some or all of the plurality of metal strips 141 within the corrosion region 5 may be interconnected, and / or some or all of the plurality of metal strips 141 within the conductive region 7 may be interconnected, but the metal strips 141 within the conductive region 7 are separated from the metal strips 141 within the corrosion region 5 by the spacer 6. It will be appreciated that by interconnecting the plurality of second metal strips 141 within the corrosion region 5 and / or the conductive region 7, the area of the second metal layer 14 within the corrosion region 5 or the conductive region 7 can be effectively increased, further enhancing the ability of the metal strips 141 within the second metal layer 14 to consume water vapor, accelerating water vapor consumption, and thereby more effectively protecting the first metal traces 121 within the conductive region 7 from corrosion, thereby improving the corrosion resistance of the display panel 100.

[0054] In this embodiment, the metal strips 141 of the second metal layer 14 are affected by the contact impedance of the transparent conductive layer 16 at the second via hole 152, and are more likely to generate greater heat at the position of the second via hole 152, which can easily accelerate the consumption of water vapor. On the other hand, the metal strips 141 of the second metal layer 14 are also affected by the heat of the second metal traces 122 or the first metal traces 121 of the first metal layer 12 directly below, which further enhances the rate at which water vapor at the position of the second via hole 152 participates in the electrochemical reaction, increases the consumption of water vapor, and further improves the corrosion resistance of the display panel 100.

[0055] See also Figures 2 to 4 、 Figure 6 and Figure 7In some embodiments, a plurality of metal strips 141 are disposed within the corrosion region 5. Within the corrosion region 5, the number of second vias 152 on the side away from the spacer region 6 is greater than the number of second vias 152 on the side closer to the spacer region 6, and / or the area of the second vias 152 on the side away from the spacer region 6 is greater than the area of the second vias 152 on the side closer to the spacer region 6. That is, within the corrosion region 5, the closer to the edge of the array substrate 1, the greater the number and / or area of the second vias 152. This increases the contact area between the transparent conductive layer 16 and the second metal layer 14, i.e., the metal strips 141. Water vapor is more likely to electrochemically react with the metal strips 141 at the second vias 152 located closer to the edge of the array substrate 1, thereby consuming most of the water vapor near the edge of the array substrate 1, preventing the water vapor from diffusing toward the display area X, and thus more effectively protecting the first metal traces 121.

[0056] In some embodiments, within the corrosion region 5, the number of first vias 151 on the side away from the spacer 6 is greater than the number of first vias 151 on the side closer to the spacer 6; and / or the area of the first vias 151 on the side away from the spacer 6 is greater than the area of the first vias 151 on the side closer to the spacer 6. That is, within the corrosion region 5, the number and / or area of the first vias 151 increase as the area is closer to the edge of the array substrate 1. Similarly, this arrangement can increase the contact area between the transparent conductive layer 16 and the second metal traces 122 near the edge of the array substrate 1. This allows water vapor to more easily electrochemically react with the second metal traces 122 at the locations of the first vias 151 closer to the edge of the array substrate 1, thereby consuming most of the water vapor closer to the edge of the array substrate 1, preventing the water vapor from diffusing toward the display area X, and thus more effectively protecting the first metal traces 121.

[0057] In other embodiments, the conductive region 7 and the corrosion region 5 may be provided with only one metal strip 141. The metal strip 141 may be provided in any shape, as long as the transparent conductive layer 16 is in contact with the metal strip 141 at the second via 152, thereby enabling electrochemical corrosion and consuming the water vapor when in contact with water vapor. The specific structure and arrangement of the metal strip 141 may be designed as needed and are not limited in this embodiment of the present application.

[0058] In some embodiments, see Figure 5The conductive region 7 may not be provided with the second metal layer 14, namely the metal strip 141. The metal strip 141 is provided only within the corrosion region 5, and the second via 152 is also provided only within the corrosion region 5 corresponding to the metal strip 141. The conductive region 7 does not have the second via 152. The transparent conductive layer 16 contacts the metal strip 141 only within the corrosion region 5 through the second via 152, thereby achieving electrical connection. Water vapor corrosion of the second metal layer 14 occurs only within the corrosion region 5 and does not extend into the conductive region 7. In this embodiment, all corrosion is concentrated within the corrosion region 5, which is separated from the conductive region 7 by the spacer 6. Corrosion occurring within the corrosion region 5 is less likely to spread to the conductive region 7, effectively preventing water vapor from spreading to the conductive region 7 and corroding the first metal trace 121.

[0059] See also Figures 2 to 6 In some embodiments, the first metal traces 121 and the second metal traces 122 can both be arranged in a cross pattern. The first metal traces 121 and the second metal traces 122 can each include a plurality of vertical traces spaced apart along a first direction L1 and a plurality of horizontal traces spaced apart along a second direction L2, with the plurality of horizontal traces intersecting the plurality of vertical traces in a one-to-one correspondence. The first metal traces 121 and the second metal traces 122 can have the same shape, line width, and line spacing, and can be simultaneously fabricated using the same process flow. This simplifies the fabrication process of the display panel 100, reduces process difficulty, and saves process costs.

[0060] See also Figure 7 In some embodiments, the second metal trace 122 can be a single metal line that extends along the edge of the display panel 100. Specifically, the second metal trace 122 can extend along the edge of the display panel 100 in any manner, such as a wave shape, a bow shape, or a broken line shape, and the second metal trace 122 is a single metal line.

[0061] It can be understood that the second metal trace 122 is set as a single metal line that extends along the edge of the display panel 100 in a winding manner. Compared with the first metal trace 121 in a cross shape, the line width and line spacing of the second metal trace 122 can be set to smaller values. The impedance of the second metal trace 122 is larger. Compared with the first metal trace 121, the second metal trace 122 is more likely to accumulate heat when in contact with the transparent conductive layer 16. External water vapor is more likely to enter the first via 151 of the corrosion area 5 under the high heat generated by the second metal trace 122. The contact between the transparent conductive layer 16 / water vapor / second metal trace 122 causes an electrochemical reaction at high temperature, corroding the second metal trace 122 and consuming the water vapor.

[0062] In one embodiment, Figure 7As shown, the first metal traces 121 within the conductive region 7 are arranged in a cross pattern. The first metal traces 121 include multiple vertical traces spaced apart along a first direction L1 and multiple horizontal traces spaced apart along a second direction L2. The multiple horizontal traces intersect the multiple vertical traces in a one-to-one correspondence. The second metal traces 122 within the corrosion region 5 include multiple long traces and multiple short traces. The multiple long traces are perpendicular to the sides of the display panel 100 and spaced apart from each other. The multiple short traces connect the ends of two adjacent long traces. Specifically, the multiple short traces are spaced apart between two adjacent long traces, connecting the beginning and end of the long traces. Only one short trace is provided between every two long traces, forming a meandering second metal trace 122.

[0063] Specifically, the line width of the second metal trace 122 is smaller than the line width of the first metal trace 121; and / or, in the first direction L1, the distance between two adjacent long traces is smaller than the distance between two adjacent vertical traces. This configuration reduces the line width and line spacing of the second metal trace 122, making it easier for heat to accumulate when in contact with the transparent conductive layer 16. External water vapor is more likely to enter the first via 151 of the corrosion region 5 under the high heat generated by the second metal trace 122 in the corrosion region 5, thereby corroding the second metal trace 122. This further increases the water vapor consumption rate of the second metal trace 122 in the corrosion region 5, thereby further improving the corrosion resistance of the display panel 100 and enhancing the performance of the display panel 100.

[0064] In other embodiments, the first metal trace 121 and the second metal trace 122 may also be configured as any other shape and may be designed as needed, which is not limited in this embodiment of the present application.

[0065] In some embodiments, as Figures 2 to 7 As shown, the sealant 3 can cover the corrosion area 5 and the partial conductive area 7, and the sealant 3 covers the end of the second metal trace 122 away from the display area X, that is, the second metal trace 122 and the second metal layer 14 are all located on the side of the sealant 3 close to the display area X. It can be understood that the sealant 3 itself can play a role in preventing moisture from entering the display panel 100. By covering the end of the second metal trace 122 and the second metal layer 14 away from the display area X by the sealant 3, the second metal trace 122 and the second metal layer 14 located outside the sealant 3 can be prevented from being directly exposed to external moisture and corroded, resulting in the waste of the second metal trace 122 and the second metal layer 14, which would affect the corrosion resistance of the display panel 100. On the basis of using the frame glue 3 to block the water vapor once, the second metal traces 122 and the second metal layer 14 consume the water vapor that enters the display panel 100 through the frame glue 3 for a second time, so as to more effectively prevent the water vapor from corroding the first metal traces 121 and the remaining metal traces in the display area X, and more effectively improve the corrosion resistance of the display panel 100.

[0066] Specifically, in some embodiments, the sealant 3 is located within the non-display region F and connects the counter substrate 2 and the array substrate 1. Gold balls (not shown) are disposed within the sealant 3. The ends of the gold balls within the sealant 3 pierce the alignment films 17 of the counter substrate 2 and the array substrate 1, respectively, thereby electrically connecting to the transparent conductive layers 16 of the counter substrate 2 and the array substrate 1, respectively. This achieves electrical connection between the transparent conductive layers 16 of the counter substrate 2 and the array substrate 1, thereby facilitating driving the display panel 100 to display images. Because the second metal layer 14, i.e., the metal strips 141, is disposed within at least the etching region 5, and the sealant 3 covers the second metal layer 14 of the etching region 5, the ends of the gold balls within the sealant 3 can more easily pierce the alignment films 17 of the counter substrate 2 and the array substrate 1, thereby facilitating electrical connection between the transparent conductive layers 16 of the counter substrate 2 and the array substrate 1, thereby improving the performance of the display panel 100.

[0067] In other embodiments, the second metal wiring 122 and the second metal layer 14 may also be partially located outside the frame glue 3 and partially located inside the frame glue 3, that is, the frame glue 3 may not completely cover the second metal wiring 122 and the second metal layer 14 at the end away from the display area X. By setting the second metal wiring 122 and the second metal layer 14, water vapor can still be consumed and the corrosion resistance of the display panel 100 can be improved. The specific setting can be based on needs.

[0068] See Figure 8 , Figure 8 It is a structural diagram of an implementation of a display device provided in the second embodiment of the present application.

[0069] See also Figure 8 The second embodiment of the present application provides a display device 300, which includes a display panel 100 and a backlight source 200. The backlight source 200 is arranged on one side of the display panel 100. The backlight source 200 is used to provide backlight for the display panel 100 so that the display panel 100 can realize the picture display function.

[0070] Specifically, the specific structure of the display panel 100 can be any one of the display panels 100 in the above embodiments, and can be designed or selected as needed.

[0071] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel comprising an array substrate and an opposing substrate disposed opposite to each other, and a sealant connected between the array substrate and the opposing substrate; the display panel comprising a display area and a non-display area disposed outside the display area; characterized in that: In the non-display area, the array substrate includes a substrate, a first metal layer, an insulating layer, a second metal layer, a passivation layer, a transparent conductive layer and an alignment film arranged in sequence; The non-display area includes a corrosion area, a spacer area and a conductive area arranged in sequence, and the corrosion area is located on a side of the spacer area away from the display area; The first metal layer includes a first metal trace and a second metal trace that are spaced apart, the first metal trace is disposed in the conductive area, and the second metal trace is disposed in the corrosion area; The second metal layer includes at least one metal strip, the metal strip is at least located in the corrosion area, and in the corrosion area, a projection of the at least one metal strip on the first metal layer partially covers the second metal trace; The passivation layer is provided with a plurality of first via holes and a plurality of second via holes at intervals; the first via holes penetrate the passivation layer and the insulating layer and expose a portion of the first metal layer; the second via holes penetrate the passivation layer and expose a portion of the second metal layer; The transparent conductive layer extends from the conduction area to the corrosion area, and in the conduction area, the transparent conductive layer is electrically connected to the first metal trace through at least the first via hole; in the corrosion area, the transparent conductive layer is in contact with the second metal trace through the first via hole, and is in contact with the metal strip through the second via hole.

2. The display panel according to claim 1, wherein: In the corrosion area, at least a portion of the first vias penetrates the passivation layer and the insulating layer and exposes a side surface of the metal strip and a top surface of the second metal trace; The transparent conductive layer extends into the first via hole and is electrically connected to the metal strip and the second metal trace respectively.

3. The display panel according to claim 1, wherein: The conductive area is also provided with the metal strip; In the conducting area, a projection of the metal strip on the first metal layer partially covers the first metal trace.

4. The display panel according to claim 3, wherein: In the conductive area, the first via hole penetrates the passivation layer and the insulating layer and exposes only the top surface of the first metal trace; the transparent conductive layer extends into the first via hole and is electrically connected only to the first metal trace; In the conductive area, the second via hole penetrates the passivation layer and exposes only a portion of the metal strip. The transparent conductive layer extends into the second via hole and is in contact with the metal strip.

5. The display panel according to claim 4, wherein: The number of the second via holes in the conductive area is less than the number of the second via holes in the corrosion area; and / or, the area of the second via hole in the conductive region is smaller than the area of the second via hole in the corrosion region; and / or, the number of the first via holes in the conductive area is smaller than the number of the first via holes in the corrosion area; And / or, the area of the first via hole in the conductive region is smaller than the area of the first via hole in the corrosion region.

6. The display panel according to claim 3, wherein: The conductive area and the corrosion area are both provided with a plurality of the metal strips; In the corrosion area, the plurality of metal strips are spaced apart from each other and distributed in an array; And / or, in the conductive area, the plurality of metal strips are spaced apart from each other and distributed in an array.

7. The display panel according to claim 3, wherein: The conductive area and the corrosion area are both provided with a plurality of the metal strips; In the corrosion zone, any number of the plurality of metal strips are connected to each other; And / or, within the conductive region, any number of the plurality of metal strips are connected to each other.

8. The display panel according to claim 1, wherein: A plurality of the metal strips are arranged in the corrosion zone; In the corrosion area, the number of the second via holes on a side away from the spacer area is greater than the number of the second via holes on a side close to the spacer area; and / or, the number of the first via holes on a side away from the spacer is greater than the number of the first via holes on a side close to the spacer; and / or, an area of the second via hole on a side away from the spacer region is larger than an area of the second via hole on a side close to the spacer region; And / or, the area of the first via hole on the side away from the spacer region is larger than the area of the first via hole on the side close to the spacer region.

9. The display panel according to any one of claims 1 to 8, wherein: The first metal routing is in a cross shape, and includes a plurality of vertical routings spaced apart along a first direction, and a plurality of horizontal routings spaced apart along a second direction, and the plurality of horizontal routings intersect with the plurality of vertical routings in a one-to-one correspondence; The second metal traces include a plurality of long lines and a plurality of short lines, wherein the plurality of long lines are perpendicular to the side surface of the display panel and are spaced apart from each other, and the plurality of short lines correspondingly connect the ends of two adjacent long lines; The line width of the second metal wiring is smaller than the line width of the first metal wiring; and / or, In the first direction, the distance between two adjacent long lines is smaller than the distance between two adjacent vertical lines.

10. A display device, characterized in that: include: The display panel according to any one of claims 1 to 9; The backlight module is arranged on one side of the display panel and is used to provide backlight for the display panel.

Images