Display panel and display device

Abstract

The invention discloses a display panel and a display device, the display panel is provided with a display area and a non-display area, and the display panel comprises a substrate; the first conductive layer is arranged on the substrate, and the first conductive layer comprises a conductive part arranged in the non-display area; the polaroid is arranged on the side, away from the substrate, of the first conducting layer, a slot is formed in the first edge of the polaroid, and the orthographic projection of the slot on the substrate and the orthographic projection of the first side face of the conducting part on the substrate are at least partially overlapped. The open groove is formed in the first edge of the polaroid to avoid the first side face of the conductive part, potassium ions in the polaroid are effectively prevented from invading and corroding the conductive layer and other inorganic film layers from the first side face, and therefore the problems of black spots, film layer stripping and the like are solved, the reliability of the display panel is improved, and the use performance of the display panel is guaranteed.

Description

Technical Field

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

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

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

[0004] Therefore, a new display panel and display device are urgently needed. Summary of the invention

[0005] The present application provides a display panel and a display device, by providing a groove at the first edge of the polarizer to avoid the first side surface of the conductive portion, effectively avoiding the K + Ions invade from the first side and corrode the conductive layer and other inorganic film layers, thereby improving problems such as black spots and film peeling, improving the reliability of the display panel, and ensuring the performance of the display panel.

[0006] On the one hand, an embodiment of the present application provides a display panel having a display area and a non-display area, the display panel comprising: a substrate; a first conductive layer, disposed on the substrate, the first conductive layer comprising a conductive portion disposed in the non-display area; a polarizer, disposed on a side of the first conductive layer away from the substrate, a first edge of the polarizer is provided with a groove, and an orthographic projection of the groove on the substrate and an orthographic projection of the first side surface of the conductive portion on the substrate at least partially overlap.

[0007] According to one aspect of the present application, the orthographic projection of the groove on the substrate is a polygon or a curved shape; optionally, the orthographic projection of the groove on the substrate is a rectangle or an arc.

[0008] According to one aspect of the present application, it also includes a display function layer arranged in the display area, the display function layer is arranged between the first conductive layer and the polarizer, and in the direction perpendicular to the substrate, the display function layer includes a first electrode layer, a light-emitting layer and a second electrode layer; optionally, the conductive part and the second electrode layer are electrically connected; optionally, the display panel also includes an encapsulation layer, the encapsulation layer located in the display area is located on the side of the display function layer away from the substrate, and the encapsulation layer located in the non-display area is at least partially located on the side of the conductive part away from the substrate; the encapsulation layer is located between the display function layer and the polarizer; optionally, in the non-display area, the encapsulation layer includes at least one inorganic encapsulation layer; optionally, the display panel also includes an inorganic An insulating layer is located between the substrate and the first conductive layer, and the orthographic projection of the contact area between the inorganic packaging layer and the inorganic insulating layer on the substrate at least partially overlaps with the orthographic projection of the groove on the substrate; optionally, the orthographic projection of the contact area between the conductive part and the inorganic packaging layer on the substrate, and the overlapping area of ​​the orthographic projection of the contact area between the conductive part and the inorganic insulating layer on the substrate, and the overlapping area of ​​the orthographic projection of the conductive part on the substrate and the orthographic projection of the groove on the substrate at least partially overlap; optionally, the display panel also includes a dam portion provided in the non-display area, and the orthographic projection of the contact area between the inorganic packaging layer and the inorganic insulating layer on the substrate is located on the side of the orthographic projection of the dam portion on the substrate away from the display area.

[0009] According to one aspect of the present application, in the display area, the display panel includes a second conductive layer, a first insulating layer, a third conductive layer, a second insulating layer, a fourth conductive layer, a third insulating layer, a fifth conductive layer, a fourth insulating layer and a first conductive layer stacked in sequence along a direction away from the substrate; the display function layer is arranged on the side of the first conductive layer away from the substrate.

[0010] According to one aspect of the present application, along the thickness direction of the display panel, the conductive part includes a first metal layer, a second metal layer and a third metal layer stacked in sequence, and the activity of the second metal layer is greater than that of the first metal layer and the third metal layer; optionally, along the thickness direction of the display panel, the conductive part includes a first titanium metal layer, an aluminum metal layer and a second titanium metal layer stacked in sequence.

[0011] According to one aspect of the present application, it also includes a power supply voltage signal line arranged in the non-display area, and the power supply voltage signal line is electrically connected to the conductive part; optionally, the power supply voltage signal line is a positive power supply voltage signal line or a negative power supply voltage signal line; optionally, the non-display area also includes a binding area, and the orthographic projection of the groove on the substrate is located between the display area and the binding area.

[0012] According to one aspect of the present application, the display panel also includes an organic layer, and in the display area, the organic layer is arranged between the first conductive layer and the polarizer; in the non-display area, the orthographic projection of the organic layer on the substrate and the orthographic projection of the conductive part on the substrate at least partially do not overlap; optionally, the overlapping area of ​​the orthographic projection of the conductive part on the substrate and the orthographic projection of the groove on the substrate does not overlap at least partially with the orthographic projection of the organic layer on the substrate; optionally, the display panel also includes a dam portion arranged in the non-display area, and at least a part of the dam portion is arranged in the same layer as the organic layer; optionally, the display panel also includes a display function layer arranged in the display area, located between the organic layer and the polarizer.

[0013] According to one aspect of the present application, it also includes a dam portion provided in the non-display area, the conductive portion is at least partially located on the side of the dam portion away from the display area; at least part of the orthographic projection of the groove on the substrate is located on the side of the orthographic projection of the dam portion on the substrate away from the display area; optionally, the dam portion includes a first dam portion and a second dam portion, the second dam portion is provided on the side of the first dam portion away from the display area, and the conductive portion is at least partially located on the side of the second dam portion away from the first dam portion; at least part of the orthographic projection of the groove on the substrate is located on the side of the orthographic projection of the second dam portion on the substrate away from the first dam portion; optionally, the orthographic projection of the groove on the substrate at least partially overlaps with the orthographic projection of the second dam portion on the substrate; optionally, the orthographic projection of the groove on the substrate is located on the first dam portion. The orthographic projection on the substrate is away from the side of the display area; optionally, the orthographic projection on the substrate of the side of the groove close to the display area is located on the side of the gap between the orthographic projections of the first dam portion and the second dam portion on the substrate away from the display area; optionally, the conductive portion includes a first side edge, and at least a part of the orthographic projection of the first side edge on the substrate is located within the orthographic projection of the groove on the substrate; optionally, the conductive portion includes a second side edge, the first side edge and the second side edge are connected, the extension directions of the first side edge and the second side edge intersect, and the orthographic projection of the second side edge on the substrate is located within the orthographic projection of the second dam portion on the substrate; optionally, the second side edge and the second dam portion have the same extension direction; optionally, the film layer where at least a part of the dam portion is located is located between the first conductive layer and the polarizer.

[0014] According to one aspect of the present application, it also includes an ion protection layer, which is arranged between the conductive part and the polarizer.

[0015] Another aspect of the present invention provides a display device, comprising the display panel in any one of the above embodiments.

[0016] Compared with the prior art, the display panel provided in the embodiment of the present invention includes a substrate, a first conductive layer and a polarizer. A groove is provided at the first edge of the polarizer to avoid the first side surface of the conductive portion, thereby effectively avoiding the K +Ions invade from the first side and corrode the conductive layer and other inorganic film layers, thereby improving problems such as black spots and film peeling, improving the reliability of the display panel, and ensuring the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0019] Figure 2 An embodiment provides Figure 1 A partial enlarged view of point B in the middle;

[0020] Figure 3 is a schematic top view of the relative positions of a first dam portion, a second dam portion and a first encapsulation layer provided by an embodiment;

[0021] Figure 4 is a schematic top view of the relative positions of a first dam portion, a second dam portion, and a polarizer provided by an embodiment;

[0022] Figure 5 is a schematic top view of the relative positions of a first conductive layer and a polarizer provided by an embodiment;

[0023] Figure 6 is a schematic top view of the relative positions of a first encapsulation layer and an organic layer provided by an embodiment;

[0024] Figure 7 is a schematic top view of the relative positions of a first packaging layer and a first conductive layer provided by an embodiment;

[0025] Figure 8 is a schematic top view of the relative positions of a first dam portion, a second dam portion and a first conductive layer provided by an embodiment;

[0026] Fig. 9 An embodiment provides Figure 2 Schematic diagram of the cross-section structure at CC in the middle;

[0027] Fig.10 An embodiment provides Figure 2 Schematic diagram of the cross-sectional structure at DD in the middle;

[0028] Fig.11 An embodiment provides Figure 2 Schematic diagram of the cross-sectional structure at EE in the middle;

[0029] Fig.12 Another embodiment provides Figure 2 Schematic diagram of the cross-sectional structure at CC in the middle.

[0030] In the attached figure:

[0031] 1-substrate; 2-array layer; 3-polarizer; 4-encapsulation layer; 41-first encapsulation layer; 42-second encapsulation layer; 43-third encapsulation layer; 5-dam portion; 51-first dam portion; 52-second dam portion; 6-display function layer; 61-first electrode layer; 62-light-emitting layer; 63-second electrode layer; 7-organic layer; J-inorganic insulating layer; B1-first edge; B11-first sub-edge; B12-second sub-edge; B13-third sub-edge Edge; B14-fourth sub-edge; B15-fifth sub-edge; N1-first side; N2-second side; C-second electrode plate; C1-first side; S-source; D-drain; G-gate; M1-first conductive layer; M2-second conductive layer; M3-third conductive layer; M4-fourth conductive layer; M5-fifth conductive layer; L-conductive portion; K-groove; F-ion protection layer; AA-display area; NA-non-display area; WA-inorganic packaging area. DETAILED DESCRIPTION

[0032] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0034] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0035] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0036] In the prior art, a reliability verification (RA) test is usually required to test the reliability of the display panel. The inventors have found that during the RA process, due to the presence of potassium fluoride residue in the glue of the polarizer, when the display panel is powered on, the potassium ions K + They are easily attracted by the conductive layer and gathered at the conductive boundary, forming an alkaline environment that causes inorganic or metal wire corrosion and film peeling. After water vapor intrusion, GDS (Growing Dark Spot) or poor functionality is formed, affecting the display effect of the display panel.

[0037] In order to solve the above problem, the embodiment of the present invention provides a slot at the first edge of the polarizer to avoid the first side surface of the conductive portion, thereby effectively avoiding the K + Ions invade from the first side to corrode the conductive layer and other inorganic film layers, thereby improving problems such as black spots and film peeling.

[0038] The present application provides a display panel and a display device. Figures 1 to 12 Various embodiments of a display panel and a display device are described.

[0039] See also Figure 1 , Figure 2 as well as Fig. 9A display panel provided in an embodiment of the present application has a display area AA and a non-display area NA, wherein the non-display area NA is at least partially arranged around the display area AA. The display panel includes: a substrate 1; a first conductive layer M1, disposed on the substrate 1, the first conductive layer M1 includes a conductive portion L disposed in the non-display area NA; a polarizer 3, disposed on a side of the array layer 2 away from the substrate 1, a first edge B1 of the polarizer 3 is provided with a groove K, and the orthographic projection of the groove K on the substrate 1 and the orthographic projection of the first side surface C1 of the conductive portion L on the substrate 1 at least partially overlap.

[0040] The display panel provided in the embodiment of the present invention includes a substrate 1, a first conductive layer M1 and a polarizer 3. A groove K is provided at a first edge B1 of the polarizer 3 to avoid a first side surface C1 of the conductive portion L, thereby effectively avoiding the K in the polarizer 3. + Ions invade from the first side surface C1 to corrode the conductive layer and other inorganic film layers, thereby improving problems such as black spots and film peeling, improving the reliability of the display panel, and ensuring the performance of the display panel.

[0041] Optionally, the display panel further includes an array layer 2 located between the substrate 1 and the polarizer 3, the array layer 2 includes at least two stacked conductive layers, the conductive layers include a first conductive layer M1 that is farther away from the substrate 1 relative to the other conductive layers. The conductive layers include the first conductive layer M1 that is farther away from the substrate 1 relative to the other conductive layers, that is, the first conductive layer M1 is located at the top layer and is farthest from the substrate 1.

[0042] In this embodiment, the inventor has studied the direction of the first side surface C1 of the conductive portion L and found that it is relatively easy to be K + Ion invasion corrosion, therefore, it is necessary to remove at least part of the polarizer 3 located above the first side surface C1, so that there is no polarizer 3 above the first side surface C1, and K in the polarizer 3 at the corresponding position will not be generated. + The problem of ion invasion and corrosion from the side surface corresponding to the first side surface C1 of the conductive portion L is solved, thereby improving the yield of the display panel.

[0043] The substrate 1 may be a hard substrate, such as a glass substrate, or a flexible substrate, and its material may be polyimide, polystyrene, polyethylene terephthalate, polyparaxylene, polyethersulfone or polyethylene naphthalate. The substrate 1 is mainly used to support the device disposed thereon.

[0044] See also Figure 2 as well as Figure 5In some optional embodiments, the orthographic projection of the slot K on the substrate 1 is a polygon or a curved shape. It can be understood that the slot K is to avoid the first side surface C1 of the conductive portion L. Therefore, the shape and size of the slot K need to match the shape and size of the first side surface C1 of the conductive portion L. For example, when the extension track of the first side surface C1 of the conductive portion L is a straight line, the orthographic projection of the slot K on the substrate 1 can be a straight-edge shape such as a rectangle or an arc to improve the utilization rate of the slot K. Considering the influence of factors such as the application accuracy of the polarizer 3, the size of the slot K can be larger than the size of the first side surface C1 of the conductive portion L, that is, the extension length of the first side surface C1 in the direction parallel to the plane where the substrate 1 is located.

[0045] Optionally, the orthographic projection of the slot K on the substrate 1 may also be in a shape with arc edges, without special limitation.

[0046] Optionally, the first edge B1 of the polarizer 3 , ie, the polarizer 3 is located at an edge of the non-display area NA.

[0047] See also Figure 4 as well as Figure 5 Optionally, the first edge B1 includes a first sub-edge B11 without forming a groove K, a second sub-edge B12, and a third sub-edge B13, a fourth sub-edge B14 and a fifth sub-edge B15 for forming a groove K, and the first sub-edge B11, the third sub-edge B13, the fourth sub-edge B14, the fifth sub-edge B15 and the second sub-edge B12 are connected in sequence.

[0048] Optionally, the first sub-edge B11, the second sub-edge B12, and the fourth sub-edge B14 extend in the same direction, and the third sub-edge B13 and the fifth sub-edge B15 extend in the same direction and intersect with the extending direction of the first sub-edge B11.

[0049] See also Fig. 9 In some optional embodiments, the display panel also includes a display function layer 6 arranged in the display area AA, and the display function layer 6 is arranged between the first conductive layer M1 and the polarizer 3. In a direction perpendicular to the plane where the substrate 1 is located, the display function layer 6 includes a first electrode layer 61, a light-emitting layer 62 and a second electrode layer 63; the conductive portion L is electrically connected to the second electrode layer 63.

[0050] In this embodiment, the conductive part L is electrically connected to the second electrode layer 63, that is, a voltage signal can be sent to the second electrode layer 63 through the conductive part L. Optionally, the display panel also includes a power supply voltage signal line arranged in the non-display area NA, and the power supply voltage signal line is electrically connected to the conductive part L.

[0051] In this embodiment, the display panel also includes a control chip arranged in the non-display area NA, and the power supply voltage signal line is connected to the control chip. The control chip transmits the power supply voltage signal to the pixel circuit or display function layer 6 of the display area AA of the display panel through the power supply voltage signal line and the conductive part L in turn to realize the luminous display of the display panel.

[0052] Optionally, the power supply voltage signal line may be a positive power supply voltage signal line, namely, an ELVDD signal line, or the power supply voltage signal line may be a negative power supply voltage signal line, namely, an ELVSS signal line. The positive power supply voltage signal line is used to transmit a positive power supply voltage signal, while the negative power supply voltage signal line is used to transmit a negative power supply voltage signal.

[0053] Optionally, the non-display area NA also includes a binding area, and the orthographic projection of the slot K on the substrate 1 is located between the display area AA and the binding area to avoid affecting the binding. The binding area can be provided with binding pins, which can be bound and connected to the driver chip.

[0054] Optionally, the first electrode layer 61 may be a single metal layer structure, such as gold (Au), platinum (Pt), titanium (Ti), silver (Ag), or a composite structure layer, such as indium tin oxide-silver-indium tin oxide film layer. Any material that can simultaneously meet the electrical requirements of the first electrode layer 61 is acceptable without any special limitation.

[0055] The material of the second electrode layer 63 is generally a material with a lower work function to facilitate electron injection, and can also reduce the heat generated during operation and extend the service life of the OLED device. The material of the second electrode layer 63 can be one of the metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), and can also be an alloy of the aforementioned metal materials, such as magnesium silver alloy (Mg / Ag) and lithium aluminum alloy (Li / Al), which is not limited in this embodiment.

[0056] Optionally, the light-emitting layer 62 includes one or more of an electron injection layer, an electron transport layer, a light-emitting material layer, a hole blocking layer, an electron blocking layer, a hole transport layer and a hole injection layer. The specific type of the light-emitting layer 62 can be selected without special limitation. The electron injection layer, the electron transport layer and the hole blocking layer can be arranged between the second electrode layer 63 and the light-emitting material layer. The electron blocking layer, the hole transport layer and the hole injection layer can be arranged between the first electrode layer 61 and the light-emitting material layer.

[0057] Optionally, the display panel also includes an encapsulation layer 4, the encapsulation layer 4 located in the display area AA is located on the surface of the display function layer 6 facing away from the substrate 1, the encapsulation layer 4 located in the non-display area NA is at least partially located on the side of the conductive part L facing away from the substrate 1, and the encapsulation layer 4 is located between the display function layer 6 and the polarizer 3.

[0058] Optionally, in the display area AA, the encapsulation layer 4 includes a first encapsulation layer 41, a second encapsulation layer 42, and a third encapsulation layer 43 which are stacked, wherein the material of the first encapsulation layer 41 includes an inorganic material, that is, the first encapsulation layer 41 is an inorganic encapsulation layer, and the inorganic encapsulation layer can be prepared by chemical vapor deposition, which can improve the compactness of the first encapsulation layer 41, thereby improving the encapsulation effect of the encapsulation layer 4. The material of the second encapsulation layer 42 includes an organic material. That is, the second encapsulation layer 42 is an organic encapsulation layer 4, and the organic encapsulation layer 4 can be prepared by inkjet printing, so that the encapsulation layer 4 has a suitable thickness. The material of the third encapsulation layer 43 includes an inorganic material. That is, the third encapsulation layer 43 is an inorganic encapsulation layer, and further adding an inorganic encapsulation layer outside the organic encapsulation layer can further improve the encapsulation effect of the encapsulation layer 4.

[0059] Optionally, the material of the first encapsulation layer 41 is the same as the material of the third encapsulation layer 43. This allows the first encapsulation layer 41 and the third encapsulation layer 43 to be prepared using the same equipment, thereby simplifying the preparation process of the display panel.

[0060] Optionally, in order to improve the water and oxygen blocking effect of the display panel, in the non-display area NA, the encapsulation layer 4 includes at least one inorganic encapsulation layer, that is, in the non-display area NA, the encapsulation layer 4 may only include a first encapsulation layer 41 and a third encapsulation layer 43 made of inorganic materials.

[0061] See also Figures 9 to 12 Optionally, the display panel also includes an inorganic insulating layer J, which is located between the substrate 1 and the first conductive layer M1. The orthographic projection of the contact area between the inorganic encapsulation layer and the inorganic insulating layer J on the substrate 1 at least partially overlaps with the orthographic projection of the groove K on the substrate 1, that is, the contact area between the inorganic encapsulation layer and the inorganic insulating layer J can be the inorganic encapsulation area WA, the organic film layers in this area are removed, and the setting area of ​​the groove K is at least partially the inorganic encapsulation area WA.

[0062] Optionally, the orthographic projection of the contact area between the conductive part L and the inorganic packaging layer on the substrate 1, the overlapping area with the orthographic projection of the contact area between the conductive part L and the inorganic insulating layer J on the substrate 1, and the overlapping area with the orthographic projection of the conductive part L on the substrate 1 and the groove K on the substrate 1 at least partially overlap.

[0063] In this embodiment, corresponding to the position of the groove K, the side surface of the conductive part L facing away from the substrate 1 contacts the inorganic packaging layer, and the side surface of the conductive part L facing the substrate 1 contacts the inorganic insulating layer J to ensure that the conductive part L does not interfere with other conductive parts.

[0064] Optionally, the display panel further includes a dam portion 5 arranged in the non-display area NA, and the orthographic projection of the contact area between the inorganic encapsulation layer and the inorganic insulating layer J on the substrate 1 is located on the side of the orthographic projection of the dam portion 5 on the substrate 1 away from the display area AA to ensure the encapsulation effect.

[0065] See also Figures 9 to 12 In the display area AA, the display panel includes a second conductive layer M2, a first insulating layer, a third conductive layer M3, a second insulating layer, a fourth conductive layer M4, a third insulating layer, a fifth conductive layer M5, a fourth insulating layer and a first conductive layer M1 which are stacked in sequence along a direction away from the substrate 1; the display function layer 6 is arranged on the side of the first conductive layer M1 away from the substrate 1.

[0066] It is understandable that the second conductive layer M2 , the third conductive layer M3 , the fourth conductive layer M4 , the fifth conductive layer M5 and the first conductive layer M1 are made of metal to form signal wiring of the array layer 2 and parts that require conductivity such as components of thin film transistors.

[0067] For example, the array layer 2 includes a pixel circuit and a capacitor structure, the pixel circuit includes multiple thin film transistors, the thin film transistor includes an active layer, a source S, a drain D and a gate G, and the capacitor structure includes a first electrode plate and a second electrode plate; the gate G and the first electrode plate are located in the second conductive layer M2, the second electrode plate C is located in the third conductive layer M3, the source S and the drain D are located in the fourth conductive layer M4, and in the display area AA, part of the fifth conductive layer M5 can be used to connect the source S and the first electrode layer 61.

[0068] The material of the source electrode S and the gate electrode G may include a combination of one or more of molybdenum, titanium, aluminum, copper, etc. The gate electrode G of the thin film transistor is usually used to receive a control signal to turn the thin film transistor on or off under the control of the control signal. One of the source electrode S and the drain electrode D of the thin film transistor is connected to the first electrode layer 61 to control the normal light emission of the display panel.

[0069] Of course, according to actual needs, only three conductive layers or four conductive layers or other numbers of conductive layers may be provided, without any special limitation.

[0070] In some optional embodiments, along the thickness direction of the display panel, the conductive portion L includes a first metal layer, a second metal layer and a third metal layer stacked in sequence, and the activity of the second metal layer is greater than that of the first metal layer and the third metal layer.

[0071] Optionally, along the thickness direction of the display panel, the conductive portion L includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer which are stacked in sequence.

[0072] It should be noted that, due to the strong corrosion resistance of titanium metal, when the etching process of other film layers is subsequently performed on the first conductive layer M1, the etching solvent will not corrode the first titanium metal layer and the second titanium metal layer, that is, the upper and lower surfaces of the conductive part L will not be corroded, while the aluminum metal layer is easily corroded, resulting in side engraving of the conductive part L or the first titanium metal layer located on the aluminum metal layer being lifted up. The morphology of the film layer here is not good in the later stage, and there is a risk of cracks or voids. When the module polarizer 3 is subsequently applied, the first edge B1 of the polarizer 3 will correspond to this area, that is, the conductive part L is located on the first side C1 of the non-display area NA. The embodiment of the present invention sets a groove K on the first edge B1 of the polarizer 3 to avoid the first side C1 of the conductive part L, thereby effectively avoiding K in the polarizer 3. + Ions invade from the first side surface C1 to corrode the conductive layer and other inorganic film layers, thereby improving problems such as black spots and film peeling, and improving the reliability of the display panel.

[0073] In order to improve the encapsulation effect, an inorganic encapsulation area can be set in the non-display area NA, and the organic film layers in this area are removed. Optionally, the display panel also includes an organic layer 7. In the display area AA, the organic layer 7 is arranged between the first conductive layer M1 and the polarizer 3; in the non-display area NA, the orthographic projection of the organic layer 7 on the substrate 1 and the orthographic projection of the conductive part L on the substrate 1 at least partially do not overlap.

[0074] It should be noted that the organic layer 7 needs to be arranged between the first conductive layer M1 and the display function layer 6, that is, the organic layer 7 is used to carry the display function layer 6 and cover the first conductive layer M1 to ensure the flatness of the display function layer 6 and the light emitting effect of the display panel. The material of the organic layer 7 can be hexamethyldisiloxane, epoxy resin or polyimide (PI), or other silicone adhesive materials with a transmittance of more than 90%, or other organic adhesive materials with a slightly lower transmittance (greater than 80%) and a slightly higher bending strength. This embodiment does not limit this. The organic layer 7 can be an organic insulating layer. The organic layer 7 can be a planarization layer.

[0075] See also Figure 2 or Figure 6 , Figure 7 In the present embodiment, part of the organic layer 7 can be removed in the non-display area NA, that is, the orthographic projection of the organic layer 7 on the substrate 1 and the orthographic projection of the conductive portion L on the substrate 1 at least partially do not overlap, so that the first encapsulation layer 41 located on the conductive portion L can directly contact the inorganic insulating layer in the array layer 2, thereby improving the encapsulation effect.

[0076] See also Figure 2 and Figure 5Optionally, the overlapping area of ​​the orthographic projection of the conductive portion L on the substrate 1 and the orthographic projection of the groove K on the substrate 1 does not at least partially overlap with the orthographic projection of the organic layer 7 on the substrate 1, that is, the organic layer 7 is not provided in the area where the conductive portion L and the groove K are provided at the same time, so as to improve the water and oxygen barrier effect.

[0077] Optionally, the display panel further includes a dam portion 5 arranged in the non-display area NA, and at least part of the dam portion 5 is arranged in the same layer as the organic layer 7, that is, part of the film layer of the dam portion 5 can be prepared using the same material and the same process as the organic layer 7 to reduce costs.

[0078] Optionally, the display panel further includes a display function layer 6 disposed in the display area AA, and located between the organic layer 7 and the polarizer 3 .

[0079] See also Figure 2 or Figure 4 In some optional embodiments, the display panel further includes a dam portion 5 disposed in the non-display area NA, the conductive portion L is at least partially located on a side of the dam portion 5 away from the display area AA, and at least partially a positive projection of the groove K on the substrate 1 is located on a side of the positive projection of the dam portion 5 on the substrate 1 away from the display area AA.

[0080] The dam portion 5 blocks water and oxygen from entering the display panel, protecting the conductive portion L from being corroded by water and oxygen. The dam portion 5 can be made of an inorganic material layer or an organic material layer, or a composite structure layer composed of multiple film layers, without special limitation.

[0081] See also Figure 8 Optionally, the dam portion 5 includes a first dam portion 51 and a second dam portion 52 , the second dam portion 52 is arranged on a side of the first dam portion 51 away from the display area AA, and the conductive portion L is at least partially located on a side of the second dam portion 52 away from the first dam portion 51 .

[0082] See also Figure 3 In order to block the intrusion of water vapor from the periphery of the display panel in the non-display area NA, part of the organic layer 7 needs to be removed, so that the inorganic encapsulation layer located on the conductive portion L, such as the first encapsulation layer 41, can directly contact the inorganic insulating layer in the array layer 2 to block water vapor, that is, the orthographic projection of the above-mentioned organic layer 7 on the substrate 1 and the orthographic projection of the conductive portion L on the substrate 1 do not overlap, but it will cause the conductive portion L of the first conductive layer M1 located in the non-display area NA to be exposed. When the first electrode layer 61 and other film layers located on the first conductive layer M1 are subsequently prepared, the solvent used in the etching process, such as the developer, will corrode the conductive portion L not covered by the organic layer 7, resulting in the first side surface C1 of the conductive portion L being corroded. In order to avoid the above-mentioned problem, the embodiment of the present application provides a groove K at the first edge B1 of the polarizer 3 to avoid the first side surface C1 of the conductive portion L, thereby effectively avoiding K in the polarizer 3.+ Ions invade from the first side surface C1 to corrode the conductive portion L and other inorganic film layers.

[0083] See also Figure 2 or Figure 4 Optionally, at least part of the orthographic projection of the groove K on the substrate 1 is located on the side of the orthographic projection of the second dam portion 52 on the substrate 1 away from the first dam portion 51 , that is, the groove K is arranged close to the second dam portion 52 .

[0084] Optionally, the orthographic projection of the groove K on the substrate 1 at least partially overlaps with the orthographic projection of the second dam portion 52 on the substrate 1 , and the polarizer 3 located above the second dam portion 52 may be provided with the groove K correspondingly.

[0085] See also Figure 2 or Figure 4 Optionally, the orthographic projection of the groove K on the substrate 1 is located on a side of the orthographic projection of the first dam portion 51 on the substrate 1 away from the display area AA.

[0086] Optionally, the orthographic projection of the side of the slot K close to the display area AA on the substrate 1 is located on the side of the gap between the orthographic projections of the first dam portion 51 and the second dam portion 52 on the substrate 1 away from the display area AA, that is, the orthographic projection of the side of the slot K close to the display area AA on the substrate 1 is closer to the orthographic projection of the second dam portion 52 on the substrate 1. + Ions invade from the first side surface C1 to corrode the conductive portion LL and other inorganic film layers.

[0087] See also Figure 5 Optionally, the conductive portion L includes a first side edge N1, and at least a portion of the orthographic projection of the first side edge N1 on the substrate 1 is located within the orthographic projection of the groove K on the substrate 1, that is, the conductive portion L can be partially arranged in an area corresponding to the groove K, and the arrangement is specifically performed according to the arrangement of the conductive portion L without any special limitation.

[0088] Optionally, the conductive portion L includes a second side N2, the first side N1 and the second side N2 are connected, the extension directions of the first side N1 and the second side N2 intersect, and the orthographic projection of the second side N2 on the substrate 1 is located within the orthographic projection of the second dam portion 52 on the substrate 1 to ensure that the size of the groove K meets the requirements.

[0089] Optionally, the second side edge N2 and the second dam portion 52 extend in the same direction.

[0090] Optionally, at least part of the film layer where the dam portion 5 is located is located between the first conductive layer M1 and the polarizer 3. For example, at least part of the film layer where the dam portion 5 is located can be made of the same material as the insulating layer (such as the organic layer 7) located between the first conductive layer M1 and the polarizer 3 to reduce production costs.

[0091] See also Figure 6 In some optional embodiments, the display panel further includes an ion protection layer F, which is disposed between the conductive portion L and the polarizer 3 .

[0092] In this embodiment, an ion protection layer F is provided between the conductive part L and the polarizer 3 so as to utilize the ion protection layer F to block the potassium ions in the polarizer 3 from entering the encapsulation layer 4 during the reliability test, thereby avoiding the problems of film peeling and dark spots caused by the invasion and erosion of the conductive part L by potassium ions, thereby improving the reliability of the display panel.

[0093] The ion protection layer F can be made of materials such as metals that can block the passage of potassium ions.

[0094] An embodiment of the present invention further provides a display device, comprising the display panel in any of the above embodiments.

[0095] The display device provided by the embodiment of the present invention has the technical effect of the technical solution of the display panel in any of the above embodiments, and the explanation of the structures and terms that are the same as or corresponding to the above embodiments will not be repeated here.

[0096] The display device provided in the embodiment of the present invention may be an organic light-emitting diode (OLED) display device, a quantum dot light-emitting diode (QLED) or a micro flat panel display device (Micro-OLED or Micro-LED).

[0097] The display device provided in the embodiment of the present application can be applied to a mobile phone, or it can be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiment of the present application does not make any special limitations on this.

[0098] The above are only specific implementation methods of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

[0099] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that: The display panel has a display area and a non-display area, and includes: substrate; A first conductive layer, disposed on the substrate, the first conductive layer comprising a conductive portion disposed in the non-display area; A polarizer is arranged on the side of the first conductive layer away from the substrate, a first edge of the polarizer is provided with a groove, and an orthographic projection of the groove on the substrate and an orthographic projection of the first side surface of the conductive part on the substrate at least partially overlap.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the groove on the substrate is a polygon or a curved edge; Preferably, the orthographic projection of the groove on the substrate is rectangular or arc-shaped.

3. The display panel according to claim 1, characterized in that: It also includes a display function layer disposed in the display area, wherein the display function layer is disposed between the first conductive layer and the polarizer, and in a direction perpendicular to the substrate, the display function layer includes a first electrode layer, a light-emitting layer, and a second electrode layer; Preferably, the conductive portion is electrically connected to the second electrode layer; Preferably, the display panel further comprises an encapsulation layer, wherein the encapsulation layer located in the display area is located on a side of the display function layer away from the substrate, and the encapsulation layer located in the non-display area is at least partially located on a side of the conductive portion away from the substrate; the encapsulation layer is located between the display function layer and the polarizer; Preferably, in the non-display area, the encapsulation layer includes at least one inorganic encapsulation layer; Preferably, the display panel further comprises an inorganic insulating layer located between the substrate and the first conductive layer, and an orthographic projection of a contact area between the inorganic encapsulation layer and the inorganic insulating layer on the substrate at least partially overlaps with an orthographic projection of the groove on the substrate; Preferably, the orthographic projection of the contact area between the conductive part and the inorganic encapsulation layer on the substrate, the overlapping area of ​​the orthographic projection of the contact area between the conductive part and the inorganic insulating layer on the substrate, and the overlapping area of ​​the orthographic projection of the conductive part on the substrate and the orthographic projection of the groove on the substrate at least partially overlap; Preferably, the display panel further comprises a dam portion provided in the non-display area, and the orthographic projection of the contact area between the inorganic encapsulation layer and the inorganic insulating layer on the substrate is located on a side of the orthographic projection of the dam portion on the substrate away from the display area.

4. The display panel according to claim 2, characterized in that: In the display area, the display panel includes a second conductive layer, a first insulating layer, a third conductive layer, a second insulating layer, a fourth conductive layer, a third insulating layer, a fifth conductive layer, a fourth insulating layer and the first conductive layer which are sequentially stacked in a direction away from the substrate; The display function layer is arranged on a side of the first conductive layer away from the substrate.

5. The display panel according to claim 1, characterized in that: Along the thickness direction of the display panel, the conductive part includes a first metal layer, a second metal layer and a third metal layer which are stacked in sequence, and the activity of the second metal layer is greater than that of the first metal layer and the third metal layer; Preferably, along the thickness direction of the display panel, the conductive part includes a first titanium metal layer, an aluminum metal layer and a second titanium metal layer which are stacked in sequence.

6. The display panel according to claim 1, characterized in that: It also includes a power supply voltage signal line disposed in the non-display area, the power supply voltage signal line is electrically connected to the conductive portion; Preferably, the power supply voltage signal line is a positive power supply voltage signal line or a negative power supply voltage signal line; Preferably, the non-display area further includes a binding area, and the orthographic projection of the groove on the substrate is located between the display area and the binding area.

7. The display panel according to claim 1, characterized in that: The display panel further comprises an organic layer, and in the display area, the organic layer is arranged between the first conductive layer and the polarizer; In the non-display area, an orthographic projection of the organic layer on the substrate and an orthographic projection of the conductive portion on the substrate at least partially do not overlap; Preferably, an overlapping area of ​​an orthographic projection of the conductive portion on the substrate and an orthographic projection of the groove on the substrate at least partially does not overlap with an orthographic projection of the organic layer on the substrate; Preferably, the display panel further comprises a dam portion provided in the non-display area, and at least a portion of the dam portion is provided in the same layer as the organic layer; Preferably, the display panel further comprises a display function layer arranged in the display area, and located between the organic layer and the polarizer.

8. The display panel according to claim 1, characterized in that: It also includes a dam portion disposed in the non-display area, wherein the conductive portion is at least partially located on a side of the dam portion away from the display area; and at least partially an orthographic projection of the groove on the substrate is located on a side of the orthographic projection of the dam portion on the substrate away from the display area. Preferably, the dam portion includes a first dam portion and a second dam portion, the second dam portion is provided on a side of the first dam portion away from the display area, and the conductive portion is at least partially located on a side of the second dam portion away from the first dam portion; At least part of the orthographic projection of the groove on the substrate is located on a side of the orthographic projection of the second dam portion on the substrate away from the first dam portion; Preferably, an orthographic projection of the groove on the substrate at least partially overlaps with an orthographic projection of the second dam portion on the substrate; Preferably, the orthographic projection of the groove on the substrate is located on a side of the orthographic projection of the first dam portion on the substrate away from the display area; Preferably, the orthographic projection of a side of the groove close to the display area on the substrate is located at a side of a gap between orthographic projections of the first dam portion and the second dam portion on the substrate away from the display area; Preferably, the conductive portion comprises a first side edge, and at least a portion of an orthographic projection of the first side edge on the substrate is located within an orthographic projection of the groove on the substrate; Preferably, the conductive portion includes a second side, the first side is connected to the second side, the extension directions of the first side and the second side intersect, and the orthographic projection of the second side on the substrate is located within the orthographic projection of the second dam portion on the substrate; Preferably, the second side edge and the second dam portion extend in the same direction; Preferably, at least part of the film layer where the dam portion is located is located between the first conductive layer and the polarizer.

9. The display panel according to claim 1, characterized in that: It also includes an ion protection layer, which is arranged between the conductive part and the polarizer.

10. A display device, characterized in that: include: The display panel according to any one of claims 1 to 9.

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