Display panel and display apparatus

Abstract

A display panel (10) and a display apparatus. In the display panel, isolation columns (33) are provided in an auxiliary function region (112), each isolation column comprising three barrier metal portions (31) and two side-etched metal portions (32) arranged in a stacked manner, the barrier metal portions and the side-etched metal portions being stacked in an alternating manner. Moreover, transverse ends of the barrier metal portions extend beyond transverse ends of the side-etched metal portion, which can enhance the ability of the display panel to block water and oxygen, thereby improving packaging reliability of the display panel.

Description

Display panel and display device 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] OLED (Organic Light-Emitting Diode) displays are widely used in various fields due to their lightweight, wide viewing angle, fast response, low-temperature resistance, high luminous efficiency, and ability to bend and create flexible displays. To implement camera functionality, existing OLED displays are cut to form an O-cut area, where the camera is located. However, during this process, the organic light-emitting materials at the edges of the cuts are susceptible to water and oxygen intrusion, leading to packaging failure. To improve packaging, existing OLED displays incorporate spacers at the edges of the O-cuts to interrupt the organic materials. However, during actual product verification, during dual 85 RA (85% humidity, 85 degrees Celsius) testing, corrosion of the outermost spacers was observed after 240 hours. This can cause the organic light-emitting materials separated by the spacers to connect, leading to packaging failure.

[0003] Therefore, existing OLED display devices have the problem that the isolation columns are easily corroded and water and oxygen invade, resulting in packaging failure. SUMMARY OF THE INVENTION

[0004] Embodiments of the present application provide a display panel and a display device to alleviate the problem in existing OLED display devices that isolation columns are easily corroded and water and oxygen intrusion occurs, resulting in packaging failure.

[0005] To solve the above problems, the technical solutions provided by this application are as follows:

[0006] An embodiment of the present application provides a display panel, comprising a main display area and a function-added area located on at least one side of the main display area, the display panel comprising:

[0007] substrate;

[0008] A driving circuit layer is provided on one side of the substrate;

[0009] a light-emitting functional layer, comprising a common layer and a pixel electrode layer, wherein the common layer is arranged on a side of the pixel electrode layer away from the driving circuit layer;

[0010] In which, the driving circuit layer includes an isolation column arranged in the functional additional area, the isolation column includes at least three blocking metal parts and at least two side-engraved metal parts, the blocking metal part and the side-engraved metal part are overlapped, the lateral end of the blocking metal part exceeds the lateral end of the side-engraved metal part, and the common layer is disconnected by the isolation column.

[0011] At the same time, an embodiment of the present application provides a display device, which includes the display panel as described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0013] FIG1 is a first schematic diagram of a display panel provided in an embodiment of the present application.

[0014] FIG2 is a second schematic diagram of a display panel provided in an embodiment of the present application.

[0015] FIG3 is a third schematic diagram of a display panel provided in an embodiment of the present application.

[0016] FIG4 is a fourth schematic diagram of a display panel provided in an embodiment of the present application.

[0017] FIG5 is a fifth schematic diagram of a display panel provided in an embodiment of the present application.

[0018] FIG6 is a schematic diagram of a first structure of a display panel corresponding to each step in the method for manufacturing a display panel provided in an embodiment of the present application.

[0019] FIG. 7 is a schematic diagram of a second structure of a display panel corresponding to each step in the method for manufacturing a display panel provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0023] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0024] The disclosure below provides many different embodiments or examples for realizing 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, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0025] The embodiments of the present application provide a display panel and a display device to alleviate the problem that isolation columns of existing OLED display devices are easily corroded and water and oxygen intrusion occurs, resulting in packaging failure.

[0026] As shown in FIG1 and FIG2 , an embodiment of the present application provides a display panel. The display panel 10 includes a main display area 111 and a function-added area 112 located on at least one side of the main display area 111 . The display panel 10 includes:

[0027] substrate 21;

[0028] A driving circuit layer is provided on one side of the substrate 21;

[0029] The light-emitting functional layer 24 includes a common layer 243 and a pixel electrode layer 241 , wherein the common layer 243 is disposed on a side of the pixel electrode layer 241 away from the driving circuit layer;

[0030] In which, the driving circuit layer includes an isolation column 33 arranged in the functional additional area 112, and the isolation column 33 includes at least three blocking metal parts 31 and at least two side-engraved metal parts 32. The blocking metal part 31 is overlapped with the side-engraved metal part 32, and the lateral end of the blocking metal part 31 is set beyond the lateral end of the side-engraved metal part 32, and the common layer 243 is disconnected by the isolation column.

[0031] An embodiment of the present application provides a display panel, which, by arranging an isolation column in a function-added area so that the isolation column includes three stacked barrier metal parts and two side-engraved metal parts, the side-engraved metal parts are overlapped with the side-engraved metal parts, and the lateral ends of the barrier metal parts extend beyond the lateral ends of the side-engraved metal parts. This can increase the thickness and corrosion resistance of the isolation column, and increase the spacing between the disconnected parts of the common layer. Even if part of the metal is corroded, since the isolation column includes three barrier metal parts and two side-engraved metal parts, the disconnected parts of the common layer can be avoided from being connected, thereby improving the ability of the display panel to block water and oxygen, and improving the packaging reliability of the display panel.

[0032] Specifically, the function-added area may be an O-cut area or other areas; the function-added area may be displayed or not displayed.

[0033] Specifically, the additional function area can be set on one side of the main display area, or on multiple sides of the main display area. The main display area can be set around the additional function area, or the main display area can be in contact with part of the additional function area.

[0034] Specifically, the materials of the three barrier metal parts can be the same or different, the widths of the three barrier metal parts can be the same or different, and the thicknesses of the three barrier metal parts can be the same or different; similarly, the materials of the two side-engraved metal parts can be the same or different, the widths of the two side-engraved metal parts can be the same or different, and the thicknesses of the two side-engraved metal parts can be the same or different; but it is necessary to make the lateral end of any barrier metal part extend farther in the lateral direction than the lateral end of the side-engraved metal part it contacts, so that the side-engraved metal part is concave relative to the barrier metal part it contacts, thereby disconnecting the common layer.

[0035] Specifically, the drawings in the embodiments of the present application illustrate an example in which two isolation pillars are provided in the function-added area, but the embodiments of the present application are not limited thereto. For example, the function-added area may have only one isolation pillar, or may have three or more isolation pillars. In some embodiments, as shown in FIG2 , the number of the barrier metal portions 31 is greater than the number of the side-engraved metal portions 32, and any one of the side-engraved metal portions 32 is sandwiched between two of the barrier metal portions 31. By sandwiching the side-engraved metal portion between the two barrier metal portions, the common layer can be disconnected between the barrier metal portion and the side-engraved metal portion, thereby improving the display panel's ability to block water and oxygen, and improving the packaging reliability of the display panel.

[0036] In some embodiments, the number of the barrier metal parts is greater than the number of the side-engraved metal parts, and any one of the side-engraved metal parts is sandwiched between two of the barrier metal parts.

[0037] In some embodiments, the driving circuit layer includes a metal layer, the metal layer includes multiple titanium layers and multiple aluminum layers, the aluminum layer is sandwiched between two of the titanium layers, the titanium layer includes the barrier metal part, and the aluminum layer includes the side-engraved metal part.

[0038] In some embodiments, the driving circuit layer further includes a source-drain electrode layer, and the metal layer is disposed on a side of the source-drain electrode layer away from the substrate.

[0039] In some embodiments, the metal layer includes a first source-drain electrode layer and a second source-drain electrode layer, the first source-drain electrode layer is disposed between the second source-drain electrode layer and the substrate, the first source-drain electrode layer includes a first titanium layer, a first aluminum layer, and a second titanium layer disposed in sequence, and the second source-drain electrode layer includes a third titanium layer, a second aluminum layer, and a fourth titanium layer disposed in sequence;

[0040] The three barrier metal parts include a first barrier metal part, a second barrier metal part and a third barrier metal part, and the two side engraved metal parts include a first side engraved metal part and a second side engraved metal part;

[0041] The first titanium layer includes the first barrier metal portion, the fourth titanium layer includes the third barrier metal portion, one of the second titanium layer and the third titanium layer includes the second barrier metal portion, the first aluminum layer includes the first side-engraved metal portion, and the second aluminum layer includes the second side-engraved metal portion.

[0042] In some embodiments, a portion of the common layer is disposed on the third barrier metal portion, a portion of the common layer overlaps the first barrier metal portion, and a portion of the common layer located on the third barrier metal portion is disconnected from a portion of the common layer overlapped on the first barrier metal portion.

[0043] In some embodiments, a portion of the common layer is disposed on the third barrier metal portion, a portion of the common layer is disposed on the second barrier metal portion, and the portion of the common layer located on the third barrier metal portion, the portion of the common layer located on the second barrier metal portion, and the portion of the common layer located on one side of the isolation column are disconnected from each other.

[0044] In some embodiments, a portion of the common layer is disposed on the third barrier metal portion, a portion of the common layer is disposed on the second barrier metal portion, a portion of the common layer is overlapped on the first barrier metal portion, and the portion of the common layer located on the third barrier metal portion, the portion of the common layer located on the second barrier metal portion, and the portion of the common layer overlapped on the first barrier metal portion are disconnected from each other.

[0045] In some embodiments, the isolation column further includes a fourth barrier metal portion, the fourth barrier metal portion is disposed between the second side-engraved metal portion and the second barrier metal portion, the second titanium layer includes the second barrier metal portion, and the third titanium layer includes the fourth barrier metal portion.

[0046] In some embodiments, a width of the third barrier metal portion is equal to a width of the fourth barrier metal portion, and a width of the fourth barrier metal portion is smaller than a width of the second barrier metal portion.

[0047] In some embodiments, a portion of the common layer is disposed on the third barrier metal portion, a portion of the common layer is disposed on a portion of the second barrier metal portion extending beyond the fourth barrier metal portion, and the portion of the common layer located on the third barrier metal portion, the portion of the common layer located on the second barrier metal portion, and the portion of the common layer located on one side of the isolation column are disconnected from each other.

[0048] In some embodiments, the width of the second side-engraved metal portion is smaller than the width of the first side-engraved metal portion, and the difference in width between the fourth barrier metal portion and the second side-engraved metal portion is equal to the difference in width between the second barrier metal portion and the first side-engraved metal portion.

[0049] In some embodiments, the driving circuit layer includes a metal layer, the metal layer includes multiple titanium layers and multiple aluminum layers, the aluminum layer is sandwiched between two titanium layers, the titanium layer includes the barrier metal portion, and the aluminum layer includes the side-engraved metal portion. By making the metal layer in the driving circuit layer include a titanium layer and an aluminum layer, making the titanium layer include the barrier metal portion, and the aluminum layer include the side-engraved metal portion, when etching the metal layer, the lateral end of the barrier metal portion can be set beyond the lateral end of the side-engraved metal portion, so that the common layer can be disconnected by the barrier metal portion in the titanium layer and the side-engraved metal portion in the aluminum layer, thereby improving the ability of the display panel to block water and oxygen, and improving the packaging reliability of the display panel.

[0050] In some embodiments, the driver circuit layer further includes a source / drain electrode layer, and the metal layer is disposed on a side of the source / drain electrode layer away from the substrate. When forming the barrier metal portion and the side-engraved metal portion, a new metal layer may be added to form the barrier metal portion and the side-engraved metal portion, thereby maintaining the design of the source / drain electrode layer.

[0051] In some embodiments, the metal layer includes a first metal layer, a second metal layer, a third metal layer, a fourth metal layer, and a fifth metal layer; the three barrier metal portions include a first barrier metal portion, a second barrier metal portion, and a third barrier metal portion; the two side-engraved metal portions include a first side-engraved metal portion and a second side-engraved metal portion; the first metal layer includes a first barrier metal portion, the second metal layer includes a first side-engraved metal portion, the third metal layer includes a second barrier metal portion, the fourth metal layer includes a second side-engraved metal portion, and the fifth metal layer includes a third barrier metal portion. By forming the first, second, third, fourth, and fifth metal layers into the first, first, second, second, and third barrier metal portions, respectively, the size and material of each metal layer can be adjusted to form barrier metal portions and side-engraved metal portions of different materials and sizes, thereby enabling the isolation pillar to meet different requirements.

[0052] Specifically, the first metal layer, the second metal layer, the third metal layer, the fourth metal layer and the fifth metal layer can be multiple single layers in a certain stack. For example, if a certain stack includes three single layers, the first metal layer, the second metal layer and the third metal layer can be three single layers in this stack.

[0053] To address the technical issue of forming barrier metal portions and side-engraved metal portions by adding multiple metal layers, which results in a more complex manufacturing process for a display panel, in some embodiments, as shown in FIG3 , the metal layer includes a first source-drain electrode layer 235 and a second source-drain electrode layer 237 . The first source-drain electrode layer 235 is disposed between the second source-drain electrode layer 237 and the substrate 21 . The first source-drain electrode layer 235 includes a first titanium layer 235a , a first aluminum layer 235b , and a second titanium layer 235c disposed in sequence. The second source-drain electrode layer 237 includes a third titanium layer 237a , a second aluminum layer 237b , and a fourth titanium layer 237c disposed in sequence.

[0054] The three barrier metal parts 31 include a first barrier metal part 311 , a second barrier metal part 312 and a third barrier metal part 313 , and the two side engraved metal parts 32 include a first side engraved metal part 321 and a second side engraved metal part 322 ;

[0055] The first titanium layer 235a includes the first barrier metal portion 311, the fourth titanium layer 237c includes the third barrier metal portion 313, one of the second titanium layer 235c and the third titanium layer 237a includes the second barrier metal portion 312, the first aluminum layer 235b includes the first side-engraved metal portion 321, and the second aluminum layer 237b includes the second side-engraved metal portion 322. By forming the first titanium layer and the first aluminum layer in the first source and drain electrode layer into the first barrier metal portion and the first side-engraved metal portion, forming the fourth titanium layer and the second aluminum layer in the second source and drain electrode layer into the third barrier metal portion and the second aluminum layer into the second side-engraved metal portion, and forming one of the second titanium layer and the third titanium layer into the second barrier metal portion, it is possible to avoid adding additional process steps for the display panel, thereby improving the display panel manufacturing process, and also avoiding adding additional film layers, thereby avoiding increasing the thickness of the display panel.

[0056] Specifically, the above embodiments are described by taking the use of a new metal layer to form a barrier metal part and a side-engraved metal part, and the use of a first source and drain layer and a second source and drain layer to form a barrier metal part and a side-engraved metal part as examples, but the embodiments of the present application are not limited to this. For example, part of the barrier metal part and / or the side-engraved metal part can be formed by a new metal layer, and part of the barrier metal part and / or the side-engraved metal part can be formed by at least one of the first source and drain layer and the second source and drain layer.

[0057] Specifically, the above embodiments are described using the first source / drain layer and the second source / drain layer to form a barrier metal portion and a side-engraved metal portion as an example, but the embodiments of the present application are not limited to this. When other film layers in the driving circuit layer are stacked, or when different metal layers in the driving circuit layer use different materials, other stacked film layers or multiple film layers can be used to form a barrier metal portion and / or a side-engraved metal portion respectively.

[0058] In some embodiments, as shown in FIG3 , a portion of the common layer 243 is disposed on the third barrier metal portion 313, a portion of the common layer 243 overlaps the first barrier metal portion 311, and the portion of the common layer 243 on the third barrier metal portion 313 is disconnected from the portion of the common layer 243 overlapping the first barrier metal portion 311. By disconnecting the portion of the common layer on the first barrier metal portion from the portion of the common layer overlapping the third barrier metal portion, water and oxygen cannot enter the display area due to the isolation of the common layer when water and oxygen invade, thereby enabling normal display in the display area and improving the yield of the display panel.

[0059] Specifically, a portion of the common layer is arranged on the third barrier metal part, and a portion of the common layer is overlapped on the first barrier metal part. When tested in a high temperature and high humidity environment, for example, the temperature is 85 degrees Celsius and the humidity is 85%, even if part of the metal is corroded, for example, the first side-engraved metal part and / or the second side-engraved metal part are corroded, but because at least the second barrier metal part and the third barrier metal part are provided on the first side-engraved metal part, the distance between the common layer located on the third barrier metal part and the common layer located on the first barrier metal part is still large and will not be connected together, thereby blocking the path of water and oxygen intrusion and improving the yield of the display panel.

[0060] In some embodiments, a portion of the common layer is disposed on the third barrier metal portion, and a portion of the common layer is disposed on the second barrier metal portion. Furthermore, the portion of the common layer on the third barrier metal portion, the portion of the common layer on the second barrier metal portion, and the portion of the common layer on one side of the isolation pillar are disconnected from each other. By disconnecting the portion of the common layer on the third barrier metal portion, the portion of the common layer on the second barrier metal portion, and the portion of the common layer on one side of the isolation pillar, when water and oxygen invade the common layer, the common layer is isolated, preventing the water and oxygen from invading the display area. This allows the display area to display normally, thereby improving the yield of the display panel.

[0061] Specifically, a portion of the common layer is arranged on the third barrier metal part, and a portion of the common layer is arranged on the second barrier metal part. When tested in a high temperature and high humidity environment, for example, the temperature is 85 degrees Celsius and the humidity is 85%, even if part of the metal is corroded, for example, the first side-engraved metal part and / or the second side-engraved metal part are corroded, but because the first side-engraved metal part is at least provided with a second barrier metal part and a third barrier metal part, the common layer located on the third barrier metal part and the common layer located on the second barrier metal part are separated by the third barrier metal layer, and there is a gap between the common layer located on one side of the isolation column and the common layer located on the second barrier metal part. The parts of the common layer will not be connected together, thereby blocking the path of water and oxygen intrusion and improving the yield of the display panel.

[0062] In some embodiments, as shown in FIG4 , a portion of the common layer 243 is disposed on the third barrier metal portion 313, a portion of the common layer 243 is disposed on the second barrier metal portion 312, and a portion of the common layer 243 overlaps the first barrier metal portion 311. Furthermore, the portion of the common layer 243 on the third barrier metal portion 313, the portion of the common layer 243 on the second barrier metal portion 312, and the portion of the common layer 243 overlapping the first barrier metal portion 311 are disconnected from one another. By disconnecting the portion of the common layer overlapping the first barrier metal layer, the portion of the common layer on the second barrier metal portion, and the portion of the common layer on the third barrier metal portion, when water and oxygen invade the common layer, the common layer is isolated and prevents the water and oxygen from invading the display area, thereby enabling normal display in the display area and improving the yield of the display panel.

[0063] Specifically, the common layer is divided into multiple parts by isolation columns. When water and oxygen corrode the isolation columns, the parts of the common layer are less likely to be connected together due to the large spacing between the parts and the presence of multiple parts in the common layer, thereby blocking the path for water and oxygen invasion and improving the yield of the display panel.

[0064] In some embodiments, as shown in FIG2 , the isolation column 33 further includes a fourth barrier metal portion 314, which is disposed between the second side-engraved metal portion 322 and the second barrier metal portion 312. The second titanium layer 235c includes the second barrier metal portion 312, and the third titanium layer 237a includes the fourth barrier metal portion 314. Providing the fourth barrier metal portion further increases the spacing between the common layers of each partition, thereby preventing the common layers from being connected together. This prevents water and oxygen from invading the display area, allowing the display area to display normally and improving the yield of the display panel.

[0065] Specifically, since the first source and drain electrode layer and the second source and drain electrode layer include multiple titanium layers and aluminum layers respectively, titanium layers and aluminum layers can be used to form barrier metal parts and side-engraved metal parts, which will not increase the thickness of the display panel or the process steps of the display panel.

[0066] To address the problem that the third barrier metal portion, the second side-engraved metal portion, and the fourth barrier metal portion disposed on the second barrier metal portion may cause the second barrier metal portion and the first side-engraved metal portion to bend downward or even cause the isolation pillar to collapse, as well as the problem that bubbles are easily generated during photoresist coating, in some embodiments, as shown in FIG5 , the width of the third barrier metal portion 313 is equal to the width of the fourth barrier metal portion 314, for example, both are L1, and the width L1 of the fourth barrier metal portion 314 is less than the width L2 of the second barrier metal portion 312. By ensuring that the width of the fourth barrier metal portion is equal to the width of the third barrier metal portion and the width of the fourth barrier metal portion is less than the width of the second barrier metal portion, the weight of the third and fourth barrier metal portions can be reduced, the isolation pillar can be prevented from collapsing, the possibility of bubble generation is reduced, and the yield of the display panel is improved.

[0067] In some embodiments, a portion of the common layer is disposed on the third barrier metal portion, and a portion of the common layer is disposed on the fourth barrier metal portion. The portion of the common layer located on the third barrier metal portion, the portion of the common layer located on the fourth barrier metal portion, and the portion of the common layer located on one side of the isolation pillar are disconnected from each other. By disconnecting the portion of the common layer located on the third barrier metal portion, the portion of the common layer located on the fourth barrier metal portion, and the portion of the common layer located on one side of the isolation pillar, when water and oxygen invade the common layer, the common layer is isolated, preventing the water and oxygen from invading the display area, thereby enabling normal display in the display area and improving the yield of the display panel.

[0068] In some embodiments, as shown in FIG5 , a portion of the common layer 243 is disposed on the third barrier metal portion 313, and a portion of the common layer 243 is disposed on the portion of the second barrier metal portion 312 that extends beyond the fourth barrier metal portion 314. Furthermore, the portion of the common layer 243 located on the third barrier metal portion 313, the portion of the common layer 243 located on the second barrier metal portion 312, and the portion of the common layer 243 located on one side of the isolation pillar 33 are disconnected from one another. By disconnecting the portion of the common layer located on the third barrier metal portion, the portion of the common layer located on the second barrier metal portion, and the portion of the common layer located on one side of the isolation pillar, when water and oxygen invade the common layer, the water and oxygen cannot enter the display area because the common layer is isolated, thereby enabling normal display in the display area and improving the yield of the display panel.

[0069] In some embodiments, as shown in Figure 5, the width L3 of the second side-engraved metal part 322 is smaller than the width L4 of the first side-engraved metal part 321, and the difference in width between the fourth barrier metal part 314 and the second side-engraved metal part 322, i.e., L1-L3, is equal to the difference in width L2-L4 between the second barrier metal part 312 and the first side-engraved metal part 321. By making the width of the second side-engraved metal part smaller than the width of the first side-engraved metal part, the weight of the second side-engraved metal part can be reduced, further avoiding the collapse of the isolation column, and making the difference in width between the fourth barrier metal part and the second side-engraved metal part equal to the difference in width between the second barrier metal part and the first side-engraved metal part, the common layer can be disconnected better, preventing water and oxygen from invading the display area, thereby enabling the display area to display normally and improving the yield of the display panel.

[0070] Specifically, the embodiment of the present application describes the width of each barrier metal part and each side-engraved metal part when the display panel is provided with a fourth barrier metal part, but the embodiment of the present application is not limited to this. For example, when the display panel is not provided with a fourth barrier metal part, in order to avoid the problem of collapse of the isolation column, the third barrier metal part and the second side-engraved metal part can also be designed accordingly, which will not be repeated here.

[0071] Specifically, the above embodiments are described by taking the example that the driving circuit layer includes the first source and drain layer and the second source and drain layer, but the embodiments of the present application are not limited to this. For example, if the driving circuit layer only includes one source and drain layer, the source and drain layer, other metal layers and / or newly added metal layers can be used to form the barrier metal part and the side-engraved metal part. When the driving circuit layer includes the first source and drain layer, the second source and drain layer and the third source and drain layer, the first source and drain layer, the second source and drain layer and the third source and drain layer can be used to form the barrier metal part and the side-engraved metal part.

[0072] In some embodiments, as shown in FIG. 2 , the driving circuit layer further includes a buffer layer 22 .

[0073] In some embodiments, as shown in FIG2 , the driving circuit layer further includes an active layer 231, a gate insulating layer 232, a gate layer 233, an interlayer insulating layer 234, a passivation layer 236, and a planarization layer 238. However, the present invention is not limited thereto. For example, the driving circuit layer includes a first planarization layer and a second planarization layer.

[0074] In some embodiments, as shown in FIG. 2 , the light-emitting functional layer 24 further includes a pixel definition layer 242 .

[0075] In some embodiments, the common layer may include an electron transport layer, an electron injection layer and a common electrode layer, but the embodiments of the present application are not limited thereto. For different display panels, the film layers arranged on the entire surface of the light-emitting functional layer may all belong to the common layer.

[0076] In some embodiments, the driving circuit layer may include a first gate layer and a second gate layer, and the thin film transistors in the driving circuit layer may have a top gate structure or a bottom gate structure.

[0077] At the same time, an embodiment of the present application provides a method for manufacturing a display panel, which includes:

[0078] providing a substrate;

[0079] forming an active layer on the substrate using a first mask;

[0080] forming a first gate layer on the active layer using a second mask;

[0081] forming a second gate layer on the first gate layer using a third mask;

[0082] A fourth mask is used to form grooves and vias on the second gate layer; specifically, the fourth mask may be an MCD mask;

[0083] A first source and drain electrode layer is formed on the second gate layer using a fifth mask. The structural schematic diagram of the display panel corresponding to this step is shown in (a) of FIG6 .

[0084] A passivation layer is formed on the first source and drain electrode layer, and the passivation layer in the function-added region is removed using a sixth mask. The structural schematic diagram of the display panel corresponding to this step is shown in FIG6( b ) and FIG6( a );

[0085] etching the display panel using a seventh mask to form a deep hole;

[0086] forming a first planarization layer on the passivation layer using an eighth mask; the first planarization layer is not provided in the function-added region;

[0087] A second source and drain electrode layer is formed on the first planarization layer using a ninth mask; a schematic structural diagram of a display panel corresponding to this step is shown in FIG7 ;

[0088] forming a second planarization layer on the second source and drain layer using a tenth mask;

[0089] forming a pixel electrode layer on the second planarization layer using an eleventh mask;

[0090] forming a pixel definition layer and support pillars on the pixel electrode layer using a twelfth mask;

[0091] The first source-drain electrode layer and the second source-drain electrode layer are wet-etched using a thirteenth mask to form isolation pillars. The structural schematic diagram of the display panel corresponding to this step is shown in FIG2 .

[0092] At the same time, an embodiment of the present application provides a display device, which includes the display panel as described in any of the above embodiments.

[0093] Specifically, the display device further includes electronic components, which can be arranged in the function-added area.

[0094] According to the above embodiments, it can be seen that:

[0095] The present application provides a display panel and a display device; the display panel includes a main display area and a functional additional area located on at least one side of the main display area, the display panel includes a substrate, a driving circuit layer and a light-emitting functional layer, the driving circuit layer is arranged on one side of the substrate, the light-emitting functional layer includes a common layer and a pixel electrode layer, the common layer is arranged on the side of the pixel electrode layer away from the driving circuit layer, wherein the driving circuit layer includes an isolation column arranged in the functional additional area, the isolation column includes at least three barrier metal parts and at least two side-engraved metal parts, the barrier metal part and the side-engraved metal part are arranged to overlap, the lateral end of the barrier metal part is arranged to exceed the lateral end of the side-engraved metal part, and the common layer is disconnected by the isolation column. The present application sets an isolation column in the function-added area, so that the isolation column includes three stacked barrier metal parts and two side-engraved metal parts, the side-engraved metal parts are overlapped with the side-engraved metal parts, and the lateral ends of the barrier metal parts extend beyond the lateral ends of the side-engraved metal parts. This can increase the thickness and corrosion resistance of the isolation column, and increase the spacing between the parts of the disconnected common layer. Even if part of the metal is corroded, since the isolation column includes three barrier metal parts and two side-engraved metal parts, the connection between the parts of the disconnected common layer can be avoided, thereby improving the ability of the display panel to block water and oxygen, and improving the packaging reliability of the display panel.

[0096] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0097] The above is a detailed introduction to a display panel and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel comprising a main display area and a function-added area located at at least one side of the main display area, the display panel comprising: substrate; A driving circuit layer is arranged on one side of the substrate; A light-emitting functional layer, comprising a common layer and a pixel electrode layer, wherein the common layer is arranged on a side of the pixel electrode layer away from the driving circuit layer; Among them, the driving circuit layer includes an isolation column arranged in the function-added area, the isolation column includes at least three blocking metal parts and at least two side-engraved metal parts, the blocking metal part and the side-engraved metal part are overlapped, the lateral end of the blocking metal part exceeds the lateral end of the side-engraved metal part, and the common layer is disconnected by the isolation column.

2. The display panel according to claim 1, wherein: The number of the barrier metal parts is greater than the number of the side engraved metal parts, and any one of the side engraved metal parts is sandwiched between two of the barrier metal parts.

3. The display panel according to claim 2, wherein: The driving circuit layer includes a metal layer, the metal layer includes a plurality of titanium layers and a plurality of aluminum layers, the aluminum layer is sandwiched between two of the titanium layers, the titanium layer includes the barrier metal portion, and the aluminum layer includes the side-engraved metal portion.

4. The display panel according to claim 3, wherein: The driving circuit layer further includes a source-drain electrode layer, and the metal layer is arranged on a side of the source-drain electrode layer away from the substrate.

5. The display panel according to claim 3, wherein: The metal layer includes a first source-drain electrode layer and a second source-drain electrode layer, the first source-drain electrode layer is arranged between the second source-drain electrode layer and the substrate, the first source-drain electrode layer includes a first titanium layer, a first aluminum layer, and a second titanium layer arranged in sequence, and the second source-drain electrode layer includes a third titanium layer, a second aluminum layer, and a fourth titanium layer arranged in sequence; The three barrier metal parts include a first barrier metal part, a second barrier metal part and a third barrier metal part, and the two side engraved metal parts include a first side engraved metal part and a second side engraved metal part; Among them, the first titanium layer includes the first barrier metal part, the fourth titanium layer includes the third barrier metal part, one of the second titanium layer and the third titanium layer includes the second barrier metal part, the first aluminum layer includes the first side-engraved metal part, and the second aluminum layer includes the second side-engraved metal part.

6. The display panel according to claim 5, wherein: A portion of the common layer is disposed on the third barrier metal portion, a portion of the common layer overlaps the first barrier metal portion, and a portion of the common layer located on the third barrier metal portion is disconnected from a portion of the common layer overlapped on the first barrier metal portion.

7. The display panel according to claim 5, wherein: A portion of the common layer is disposed on the third barrier metal portion, a portion of the common layer is disposed on the second barrier metal portion, and a portion of the common layer located on the third barrier metal portion, a portion of the common layer located on the second barrier metal portion, and a portion of the common layer located on one side of the isolation column are disconnected from each other.

8. The display panel according to claim 5, wherein: A portion of the common layer is arranged on the third barrier metal portion, a portion of the common layer is arranged on the second barrier metal portion, a portion of the common layer is overlapped on the first barrier metal portion, and a portion of the common layer located on the third barrier metal portion, a portion of the common layer located on the second barrier metal portion, and a portion of the common layer overlapped on the first barrier metal portion are disconnected from each other.

9. The display panel according to claim 5, wherein: The isolation column further includes a fourth barrier metal portion, the fourth barrier metal portion is disposed between the second side engraving metal portion and the second barrier metal portion, the second titanium layer includes the second barrier metal portion, and the third titanium layer includes the fourth barrier metal portion.

10. The display panel according to claim 9, wherein: The width of the third barrier metal portion is equal to that of the fourth barrier metal portion, and the width of the fourth barrier metal portion is smaller than that of the second barrier metal portion.

11. The display panel according to claim 10, wherein: A portion of the common layer is disposed on the third barrier metal portion, a portion of the common layer is disposed on a portion of the second barrier metal portion that exceeds the fourth barrier metal portion, and a portion of the common layer located on the third barrier metal portion, a portion of the common layer located on the second barrier metal portion, and a portion of the common layer located on one side of the isolation column are disconnected from each other.

12. The display panel according to claim 10, wherein: The width of the second side engraved metal portion is smaller than that of the first side engraved metal portion, and the difference between the widths of the fourth barrier metal portion and the second side engraved metal portion is equal to the difference between the widths of the second barrier metal portion and the first side engraved metal portion.

13. A display device comprising a display panel, the display panel comprising a main display area and a function-added area located at at least one side of the main display area, the display panel comprising: substrate; A driving circuit layer is arranged on one side of the substrate; A light-emitting functional layer, comprising a common layer and a pixel electrode layer, wherein the common layer is arranged on a side of the pixel electrode layer away from the driving circuit layer; Among them, the driving circuit layer includes an isolation column arranged in the function-added area, the isolation column includes at least three blocking metal parts and at least two side-engraved metal parts, the blocking metal part and the side-engraved metal part are overlapped, the lateral end of the blocking metal part exceeds the lateral end of the side-engraved metal part, and the common layer is disconnected by the isolation column.

14. The display device according to claim 13, wherein: The number of the barrier metal parts is greater than the number of the side engraved metal parts, and any one of the side engraved metal parts is sandwiched between two of the barrier metal parts.

15. The display device according to claim 14, wherein: The driving circuit layer includes a metal layer, the metal layer includes a plurality of titanium layers and a plurality of aluminum layers, the aluminum layer is sandwiched between two of the titanium layers, the titanium layer includes the barrier metal portion, and the aluminum layer includes the side-engraved metal portion.

16. The display device according to claim 15, wherein: The driving circuit layer further includes a source-drain electrode layer, and the metal layer is arranged on a side of the source-drain electrode layer away from the substrate.

17. The display device according to claim 15, wherein: The metal layer includes a first source-drain electrode layer and a second source-drain electrode layer, the first source-drain electrode layer is arranged between the second source-drain electrode layer and the substrate, the first source-drain electrode layer includes a first titanium layer, a first aluminum layer, and a second titanium layer arranged in sequence, and the second source-drain electrode layer includes a third titanium layer, a second aluminum layer, and a fourth titanium layer arranged in sequence; The three barrier metal parts include a first barrier metal part, a second barrier metal part and a third barrier metal part, and the two side engraved metal parts include a first side engraved metal part and a second side engraved metal part; Among them, the first titanium layer includes the first barrier metal part, the fourth titanium layer includes the third barrier metal part, one of the second titanium layer and the third titanium layer includes the second barrier metal part, the first aluminum layer includes the first side-engraved metal part, and the second aluminum layer includes the second side-engraved metal part.

18. The display device according to claim 17, wherein: A portion of the common layer is disposed on the third barrier metal portion, a portion of the common layer overlaps the first barrier metal portion, and a portion of the common layer located on the third barrier metal portion is disconnected from a portion of the common layer overlapped on the first barrier metal portion.

19. The display device according to claim 17, wherein: A portion of the common layer is disposed on the third barrier metal portion, a portion of the common layer is disposed on the second barrier metal portion, and a portion of the common layer located on the third barrier metal portion, a portion of the common layer located on the second barrier metal portion, and a portion of the common layer located on one side of the isolation column are disconnected from each other.

20. The display device according to claim 17, wherein: A portion of the common layer is arranged on the third barrier metal portion, a portion of the common layer is arranged on the second barrier metal portion, a portion of the common layer is overlapped on the first barrier metal portion, and a portion of the common layer located on the third barrier metal portion, a portion of the common layer located on the second barrier metal portion, and a portion of the common layer overlapped on the first barrier metal portion are disconnected from each other.

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