Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel has a first display area and a second display area. The display panel comprises a first driving circuit, a second driving circuit and a first signal line. The first driving circuit is located in the first display area, the second driving circuit is located in the second display area, the first signal line comprises a first section and a second section connected with the first section, the first section is located in the first display area and electrically connected with the first driving circuit, and the second section is at least located in the second display area and electrically connected with the second driving circuit. And the second section comprises two first sub-signal transmission parts which are connected in parallel. By connecting the two first sub-signal transmission parts in parallel, the impedance of the second section of the first signal line can be reduced, that is, the impedance of the second section of the first signal line is smaller than that of the first section. Therefore, the voltage drop phenomenon of the first signal lines in the second display area can be weakened, and the problem that the brightness of the main display area and the brightness of the auxiliary display area of the display panel are not uniform can be solved.

Description

Technical Field

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

[0002] In recent years, OLED (Organic Light-Emitting Diode) has attracted widespread attention due to its huge application market in the display field. Compared with other display technologies, OLED modules have many advantages, such as wide viewing angle, fast response speed, no need for backlighting, and flexible display.

[0003] Some display devices in the related art may have a problem of uneven brightness. Summary of the invention

[0004] Based on this, it is necessary to provide a display panel and a display device, aiming to improve the problem of uneven brightness in the display area of ​​the display panel.

[0005] According to one aspect of the present application, a display panel is provided. The display panel has a first display area and a second display area, and the display panel includes: a first drive circuit located in the first display area; a second drive circuit located in the second display area; a first signal line including a first segment and a second segment connected to the first segment, the first segment is located in the first display area and electrically connected to the first drive circuit, the second segment is at least located in the second display area and electrically connected to the second drive circuit, and the second segment includes two first sub-signal transmission parts connected in parallel.

[0006] In the display panel in the embodiment of the present application, the first section of the first signal line is located in the first display area, the first section is electrically connected to the first drive circuit located in the first display area, the second section of the first signal line is at least located in the second display area and is electrically connected to the second drive circuit, and the second section includes two first sub-signal transmission parts connected in parallel. By connecting the two first sub-signal transmission parts in parallel, the impedance of the second section of the first signal line can be reduced, that is, the impedance of the second section of the first signal line is less than the impedance of the first section. As a result, the voltage drop phenomenon of the first signal line in the second display area can be weakened, which is conducive to improving the problem of uneven brightness in the display area of ​​the display panel.

[0007] In some embodiments, the entire structure of the second segment is located in the second display area; or, a portion of the second segment is located in the second display area and electrically connected to the second driving circuit, and another portion of the second segment extends to the first display area and electrically connected to the first driving circuit.

[0008] In some embodiments, the display panel also includes: a substrate; a light-emitting functional layer, which is arranged on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting functional parts arranged at intervals; a first electrode layer, including a plurality of first electrode parts, the first electrode parts are arranged corresponding to the light-emitting functional parts, and the first electrode parts are arranged on the side of the corresponding light-emitting functional parts away from the substrate; a partition structure, which is arranged on one side of the substrate and separates adjacent light-emitting functional parts, and one of the two first sub-signal transmission parts is arranged on the same layer as the partition structure and has the same material.

[0009] In some embodiments, the partition structure includes a conductive material, a plurality of first electrode portions are arranged at intervals, and the first electrode portions are electrically connected to the partition structure.

[0010] In some embodiments, the first sub-signal transmission portion disposed on the same layer as the partition structure includes a first metal portion and a second metal portion, and the second metal portion is disposed on a side of the first metal portion away from the substrate.

[0011] In some embodiments, the first sub-signal transmission portion disposed at the same layer as the partition structure further includes a third metal portion, and the third metal portion is disposed on a side of the first metal portion close to the substrate.

[0012] In some embodiments, a material of the first metal portion includes aluminum, and a material of the second metal portion includes titanium.

[0013] In some embodiments, the display panel further includes a second electrode layer, the second electrode layer is located on a side of the light-emitting functional layer close to the substrate, and the third metal portion is disposed on the same layer as the second electrode layer.

[0014] In some embodiments, among two first sub-signal transmitting portions connected in parallel, the third metal portion of the first sub-signal transmitting portion of one of them is electrically connected to the first sub-signal transmitting portion of the other one.

[0015] In some embodiments, the substrate includes a substrate and a driving circuit layer arranged on the substrate, the first driving circuit and the second driving circuit are both located in the driving circuit layer, the first segment is located in the driving circuit layer, and the other of the two first sub-signal transmission parts is arranged in the same layer as the first segment and is made of the same material.

[0016] In some embodiments, the display panel also includes a second signal line, the second signal line includes a third segment and a fourth segment connected to the third segment; the third segment is at least located in the first display area and is electrically connected to the first drive circuit; the fourth segment is located in the second display area and is electrically connected to the second drive circuit, the fourth segment includes two second sub-signal transmission parts connected in parallel; the second signal line and the first signal line are used to transmit different signals.

[0017] In some embodiments, the entire structure of the third segment is located in the first display area.

[0018] In some embodiments, a portion of the third segment is located in the first display area and is electrically connected to the first driving circuit, and another portion of the third segment extends to the second display area and is electrically connected to the second driving circuit.

[0019] In some embodiments, one of the first signal line and the second signal line is a data signal line, and the other of the first signal line and the second signal line is a power supply voltage signal line.

[0020] In some embodiments, one of the two second sub-signal transmission parts is disposed in the same layer as the partition structure and is made of the same material.

[0021] In some embodiments, the second sub-signal transmission portion disposed at the same layer as the partition structure includes a fourth metal portion and a fifth metal portion, and the fifth metal portion is disposed on a side of the fourth metal portion away from the substrate.

[0022] In some embodiments, the second sub-signal transmission portion disposed at the same layer as the partition structure further includes a sixth metal portion, and the sixth metal portion is disposed on a side of the fourth metal portion close to the substrate.

[0023] In some embodiments, a material of the fourth metal portion includes aluminum, and a material of the fifth metal portion includes titanium.

[0024] In some embodiments, the display panel further includes a second electrode layer, the second electrode layer is located on a side of the light-emitting functional layer close to the substrate, and the sixth metal portion is disposed on the same layer as the second electrode layer.

[0025] In some embodiments, the substrate includes a substrate and a driving circuit layer disposed on the substrate, the first driving circuit and the second driving circuit are both located in the driving circuit layer, the third segment is located in the driving circuit layer, and the other of the two second sub-signal transmission parts is disposed in the same layer as the third segment and is made of the same material.

[0026] In some embodiments, the display panel also includes a second electrode layer and an isolation layer, the second electrode layer includes a plurality of second electrode portions arranged at intervals, the second electrode portions correspond to the light-emitting functional portions, and the light-emitting functional portions are located on the side of the corresponding second electrode portions away from the substrate; the isolation layer is arranged on the side of the second electrode layer away from the substrate, the isolation layer is provided with a first opening for exposing the second electrode portion, and the material of the isolation layer is an insulating material; at least part of the light-emitting functional portion is located in the first opening.

[0027] In some embodiments, the isolation layer is further provided with a second opening, and at least a portion of the partition structure is located in the second opening.

[0028] In some embodiments, the display panel further includes a plurality of carrying parts and a third signal line, the carrying part is disposed on a side of the partition structure close to the substrate, the carrying part includes a conductive material, and the first electrode part is electrically connected to the third signal line through the carrying part.

[0029] In some embodiments, the partition structure includes an isolating body and a blocking portion, the blocking portion is located on a side of the isolating body facing away from the substrate, and an orthographic projection of the isolating body on the substrate is located within an orthographic projection of the blocking portion on the substrate.

[0030] In some embodiments, the isolating body and the supporting portion both include conductive materials.

[0031] In some embodiments, the first electrode portion overlaps at least one of the carrier portion and the insulator.

[0032] In some embodiments, the supporting portion and the second electrode layer are made of the same material and are disposed in the same layer.

[0033] In some embodiments, the isolation layer includes a pixel defining layer;

[0034] In some embodiments, the isolation layer includes silicon nitride.

[0035] In some embodiments, the first display area is circular in shape, the second display area is ring-shaped or part of a ring-shaped shape, the second display area is arranged around the first display area in an enclosed state, and the second display area extends in an arc shape in a flattened state.

[0036] In some embodiments, the display panel also includes a driving component, which is arranged on one side of the first display area, and the second display area is located on a side of the first display area away from the driving component; the driving component is used to provide an electrical signal to the first signal line, and an end of the first segment facing away from the second segment is electrically connected to the driving component.

[0037] In some embodiments, the second display area has an inner edge close to the first display area and an outer edge away from the first display area; the display panel includes a plurality of first signal lines; in the second display area, the closer the second segment is to the outer edge, the larger the line width is.

[0038] According to another aspect of the present application, a display panel is proposed, which includes: a substrate; a light-emitting functional layer, which is arranged on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting functional parts arranged at intervals; a first electrode layer, which includes a plurality of first electrode parts, and the first electrode parts are arranged corresponding to the light-emitting functional parts, and the first electrode parts are arranged on the side of the corresponding light-emitting functional parts away from the substrate; a partition structure, which is arranged on one side of the substrate and partitions the adjacent light-emitting functional parts; a first signal line, at least a part of the first signal line includes two first sub-signal transmission parts connected in parallel, and one of the two first sub-signal transmission parts is arranged on the same layer as the partition structure and has the same material.

[0039] According to another aspect of the present application, a display device is provided, wherein the display device comprises the display panel in any one of the above embodiments.

[0040] In the display device in the embodiment of the present application, the first section of the first signal line in the display panel is located in the first display area, the first section is electrically connected to the first drive circuit located in the first display area, the second section of the first signal line is at least located in the second display area and is electrically connected to the second drive circuit, and the second section includes two first sub-signal transmission parts connected in parallel. By connecting the two first sub-signal transmission parts in parallel, the impedance of the second section of the first signal line can be reduced, that is, the impedance of the second section of the first signal line is less than the impedance of the first section. As a result, the voltage drop phenomenon of the first signal line in the second display area can be weakened, which is conducive to improving the problem of uneven brightness in the display area of ​​the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of a display panel in an embodiment of the present application;

[0042] Figure 2 is a schematic diagram of a display panel in another embodiment of the present application;

[0043] Figure 3 is a schematic cross-sectional view of a second display area of ​​a display panel in an embodiment of the present application;

[0044] Figure 4 is a schematic top view of a second display area of ​​a display panel in an embodiment of the present application;

[0045] Figure 5It is a schematic diagram of a display panel in an enclosed state according to an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.

[0049] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0050] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0051] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0052] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0053] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0054] In recent years, OLED (Organic Light-Emitting Diode) has attracted widespread attention due to its huge application market in the display field. Compared with other display technologies, OLED modules have many advantages, such as wide viewing angle, fast response speed, no need for backlighting, and flexible display.

[0055] Some display devices in the related art may have the problem of uneven brightness in the display area. For example, the display panel used by the display device has a main display area and a sub-display area, and the sub-display area is used to display some auxiliary information. Some signal lines in the display panel (such as data signal lines, power supply voltage signal lines, etc.) extend to the sub-display area through the main display area. The part of the signal line located in the main display area is connected to the driving circuit in the main display area, and the part of the signal line located in the sub-display area is connected to the driving circuit in the sub-display area. However, since the sub-display area is farther away from the driver chip (the driver chip provides electrical signals to the signal line) than the main display area, there is an obvious voltage drop in the signal line in the sub-display area, which leads to the problem of uneven brightness in the display area.

[0056] In view of the above problems, an embodiment of the first aspect of the present application proposes a display panel, which aims to improve the problem of uneven brightness in a display area of ​​the display panel.

[0057] like Figure 1 or Figure 2 As shown, the display panel 100 in the embodiment of the first aspect of the present application has a first display area 101 and a second display area 102. The display panel 100 includes a first drive circuit (not shown in the figure), a second drive circuit (not shown in the figure) and a first signal line 103. The first drive circuit is located in the first display area 101, the second drive circuit is located in the second display area 102, the first signal line 103 includes a first segment 104 and a second segment 105 connected to the first segment 104, the first segment 104 is located in the first display area 101 and is electrically connected to the first drive circuit, the second segment 105 is at least located in the second display area 102 and is electrically connected to the second drive circuit, and the second segment 105 includes two first sub-signal transmission parts 1051 connected in parallel.

[0058] Specifically, the display panel 100 may be an OLED display panel 100 , wherein the first display area 101 may be used as a main display area for displaying more important information, and the second display area 102 may be used as a sub-display area for displaying secondary auxiliary information.

[0059] It can be understood that sub-pixels are provided in both the first display area 101 and the second display area 102 of the display panel 100. Generally, each sub-pixel corresponds to a driving circuit, and the driving circuit is used to control the corresponding sub-pixel to emit light or not. For example, in this embodiment, the first driving circuit located in the first display area 101 is used to control the corresponding sub-pixel in the first display area 101 to emit light or not. The second driving circuit located in the second display area 102 is used to control the corresponding sub-pixel in the second display area 102 to emit light or not.

[0060] The electrical signal transmitted by the first signal line 103 may be provided by a driving component (driving chip or flexible circuit board), and the driving component is usually arranged close to the first display area 101. In other words, the first display area 101 is closer to the driving component, and the second display area 102 is farther from the driving component.

[0061] In the display panel 100 in the embodiment of the present application, the first segment 104 of the first signal line 103 is located in the first display area 101, the first segment 104 is electrically connected to the first driving circuit located in the first display area 101, the second segment 105 of the first signal line 103 is at least located in the second display area 102 and is electrically connected to the second driving circuit, and the second segment 105 includes two first sub-signal transmission parts 1051 connected in parallel. By connecting the two first sub-signal transmission parts 1051 in parallel, the impedance of the second segment 105 of the first signal line 103 can be reduced, that is, the impedance of the second segment 105 of the first signal line 103 is less than the impedance of the first segment 104. As a result, the voltage drop phenomenon of the first signal line 103 in the second display area 102 can be weakened, which is conducive to improving the problem of uneven brightness in the main display area and the auxiliary display area of ​​the display panel 100.

[0062] In one specific implementation, please refer to Figure 1 , the entire structure of the second segment 105 is located in the second display area 102. At this time, the second segment 105 is only located in the second display area 102, and the second segment 105 is only electrically connected to the second circuit, and the first segment 104 is also only located in the first display area 101, and the first segment 104 is only electrically connected to the first driving circuit. In other words, only the part of the first signal line 103 located in the second display area 102 is improved to a mode in which two first sub-signal transmission parts 1051 are connected in parallel, thereby improving the problem of the first signal line 103 having a significant voltage drop in the second display area 102.

[0063] In another specific implementation, please refer to Figure 2 , a part of the second segment 105 is located in the second display area 102 and is electrically connected to the second drive circuit, and another part of the second segment 105 extends to the first display area 101 and is electrically connected to the first drive circuit. At this time, the second segment 105 is not only located in the second display area 102, but also partially extends into the first display, that is, the part of the first signal line 103 located in the second display area 102 is improved to a mode in which two sub-signal transmission parts are connected in parallel, and the part of the first signal line 103 located in the first display area 101 and close to the second display area 102 is also improved to a mode in which two first sub-signal transmission parts 1051 are connected in parallel, thereby improving the problem of obvious voltage drop of the first signal line 103 in the second display area 102.

[0064] In some embodiments, Figure 3 , Figure 4 As shown, the display panel 100 further includes a substrate 110, a light-emitting functional layer 130, a first electrode layer 150 and a partition structure 140. The light-emitting functional layer 130 is disposed on one side of the substrate 110, and the light-emitting functional layer 130 includes a plurality of light-emitting functional parts 131 disposed at intervals. The first electrode layer 150 includes a plurality of first electrode parts 151, and the first electrode parts 151 are disposed corresponding to the light-emitting functional parts 131, and the first electrode parts 151 are disposed on the side of the corresponding light-emitting functional parts 131 away from the substrate 110. The partition structure 140 is disposed on one side of the substrate 110 and partitions adjacent light-emitting functional parts 131. Among them, one of the two first sub-signal transmission parts 1051 is disposed on the same layer as the partition structure 140 and is made of the same material.

[0065] Optionally, the partition structure 140 includes a conductive material, and a plurality of first electrode portions 151 are arranged at intervals, and the first electrode portions 151 are electrically connected to the partition structure 140 .

[0066] Specifically, the first electrode layer 150 is the cathode layer of the display panel 100, and the first electrode layer 150 includes a plurality of first electrode portions 151, and the first electrode portion 151 is the cathode of the OLED light-emitting element. The light-emitting functional layer 130 includes a plurality of light-emitting functional portions 131 arranged at intervals, and the light-emitting functional portion 131 includes a light-emitting portion of the OLED light-emitting element. In addition, the light-emitting functional portion 131 may also include an auxiliary film layer that helps to improve the light-emitting performance. It can be understood that each sub-pixel in the display panel 100 includes a corresponding light-emitting functional portion 131. The partition structure 140 is used to partition the light-emitting functional layer 130 to form the light-emitting functional portions 131 arranged at intervals. In addition, the partition structure 140 is also used to partition the first electrode layer 150 to form the first electrode portions 151 arranged at intervals. In addition, the partition structure 140 includes a conductive material, and the first electrode portion 151 is electrically connected to the partition structure 140 , thereby enabling the first electrode portions 151 corresponding to the plurality of light-emitting functional portions 131 to be electrically connected to each other through the partition structure 140 , which is beneficial for reducing the number of cathode wirings in the display panel 100 .

[0067] On the other hand, in this embodiment, one of the two first sub-signal transmission parts 1051 is disposed in the same layer and made of the same material as the partition structure 140. Thus, one of the first sub-signal transmission parts 1051 can be manufactured simultaneously during the process of manufacturing the partition structure 140, that is, the partition structure 140 and the first sub-signal transmission part 1051 can be manufactured using the same mask. This is conducive to simplifying the manufacturing process of the display panel 100 and improving the manufacturing efficiency.

[0068] In some embodiments, the first sub-signal transmission part 1051 disposed on the same layer as the partition structure 140 includes a first metal part 10511 and a second metal part 10512, and the second metal part 10512 is disposed on a side of the first metal part 10511 away from the substrate 110. Such a configuration can increase the cross-sectional size of the first sub-signal transmission part 1051, thereby facilitating further reduction of impedance.

[0069] In some embodiments, the first sub-signal transmission part 1051 disposed on the same layer as the partition structure 140 further includes a third metal part 10513, and the third metal part 10513 is disposed on a side of the first metal part 10511 close to the substrate 110. This arrangement can further increase the cross-sectional size of the first sub-signal transmission part 1051, thereby facilitating further reduction of impedance.

[0070] Further, the material of the first metal part 10511 includes aluminum, and the material of the second metal part 10512 includes titanium. Among them, aluminum has a low resistivity, which is conducive to reducing impedance. However, aluminum is prone to diffusion when in contact with other metal oxides. Therefore, the material of the second metal part 0512 includes titanium, which can prevent aluminum from diffusing.

[0071] Furthermore, the display panel further includes a second electrode layer 120 , which is located on a side of the light-emitting functional layer 130 close to the substrate, and the third metal portion 10513 is disposed on the same layer as the second electrode layer 120 .

[0072] Optionally, of the two first sub-signal transmission parts 1051 connected in parallel, the third metal part 1051 of one of the first sub-signal transmission parts 1051 (for example, the first sub-signal transmission part 1051 arranged on the same layer as the partition structure 140) is electrically connected to the first sub-signal transmission part 1051 of the other (for example, the first sub-signal transmission part 1051 not arranged on the same layer as the partition structure 140).

[0073] Further, the substrate 110 may include a substrate and a driving circuit layer disposed on the substrate, wherein the first driving circuit and the second driving circuit are both located in the driving circuit layer, wherein the first segment 104 of the first signal line 103 is located in the driving circuit layer, and the other of the two first sub-signal transmission parts 1051 is disposed in the same layer and made of the same material as the first segment 104. That is, one of the two first sub-signal transmission parts 1051 is disposed in the same layer and made of the same material as the partition structure 140, and the other of the two first sub-signal transmission parts 1051 is disposed in the same layer and made of the same material as the first segment 104 of the first signal line 103. In this way, the first segment 104 and a first sub-signal transmission part 1051 disposed in the same layer therewith can be manufactured through the same process and can share a mask plate. In other words, the whole formed by the first segment 104 and a first sub-signal transmission part 1051 disposed in the same layer therewith is equivalent to the original signal line in the existing display panel 100.

[0074] In some embodiments, Figure 1 or Figure 2 As shown, the display panel 100 further includes a second signal line 106, the second signal line 106 includes a third segment 107 and a fourth segment 108 connected to the third segment 107, the third segment 107 is at least located in the first display area 101 and is electrically connected to the first drive circuit. The fourth segment 108 is located in the second display area 102 and is electrically connected to the second drive circuit, and the fourth segment 108 includes two second sub-signal transmission parts 1081 connected in parallel. The second signal line 106 and the first signal line 103 are used to transmit different signals.

[0075] The third segment 107 of the second signal line 106 is at least located in the first display area 101 and electrically connected to the first driving circuit, the fourth segment 108 is located in the second display area 102 and electrically connected to the second driving circuit, and the fourth segment 108 includes two second sub-signal transmission parts 1081 connected in parallel. By connecting the two second sub-signal transmission parts 1081 in parallel, the impedance of the fourth segment 108 of the second signal line 106 can be reduced, that is, the impedance of the fourth segment 108 of the second signal line 106 is less than the impedance of the third segment 107. As a result, the voltage drop phenomenon of the second signal line 106 in the second display area 102 can be weakened, which is conducive to further improving the problem of uneven brightness in the main display area and the auxiliary display area of ​​the display panel 100.

[0076] In one specific implementation, please refer to Figure 1 , the entire structure of the third segment 107 is located in the first display area 101 and is electrically connected to the first drive circuit. At this time, the third segment 107 is only located in the first display area 101, and the third segment 107 is only electrically connected to the first drive circuit, and the fourth segment 108 is also only located in the second display area 102, and the fourth segment 108 is only electrically connected to the second drive circuit. In other words, only the part of the second signal line 106 located in the second display area 102 is improved to a mode in which two second sub-signal transmission parts 1081 are connected in parallel, thereby improving the problem of obvious voltage drop of the second signal line 106 in the second display area 102.

[0077] In another specific implementation, please refer to Figure 2 , a portion of the third segment 107 is located in the first display area 101 and is electrically connected to the first drive circuit, and another portion of the third segment 107 extends to the second display area 102 and is electrically connected to the second drive circuit. At this time, the third segment 107 is not only located in the first display area 101, but also partially extends to the second display area 102, that is, the portion of the second signal line 106 located in the second display area 102 is not all improved to the mode of two second sub-signal transmission parts 1081 connected in parallel.

[0078] Further, when a portion of the second segment 105 is located in the second display area 102 and is electrically connected to the second drive circuit, another portion of the second segment 105 extends to the first display area 101 and is electrically connected to the first drive circuit, and a portion of the third segment 107 is located in the first display area 101 and is electrically connected to the first drive circuit, and another portion of the third segment 107 extends to the second display area 102 and is electrically connected to the second drive circuit, it is equivalent to dividing the display panel 100 into three areas, wherein the first area occupies most of the first display area 101, the third area occupies most of the second display area 102, and the second area is a transition area, and the boundary position of the first display area 101 and the second display area 102 is in the transition area. In the first area, the first signal line 103 and the second signal line 106 are both single-layer structures, in the second area, one of the first signal line 103 and the second signal line 106 is a single-layer structure, and the other is improved to a mode in which two sub-signal transmission parts are connected in parallel, and in the third area, the first signal line 103 and the second signal line 106 are both improved to a mode in which two sub-signal transmission parts are connected in parallel. At this time, the display panel 100 adopts a segmented improvement method.

[0079] In some embodiments, one of the first signal line 103 and the second signal line 106 is a data signal line, and the other of the first signal line 103 and the second signal line 106 is a power voltage signal line. Thus, the problem of a significant voltage drop of the data signal line in the second display area 102 and the problem of a significant voltage drop of the power voltage signal line in the second display area 102 can be improved, thereby facilitating the improvement of the uniformity of brightness of the main display area and the auxiliary display area of ​​the display panel 100.

[0080] Furthermore, if Figure 3 , Figure 4 As shown, one of the two second sub-signal transmission parts 1081 is disposed in the same layer as the partition structure 140 and is made of the same material. Thus, one of the second sub-signal transmission parts 1081 can be manufactured simultaneously during the process of manufacturing the partition structure 140, that is, the partition structure 140 and the second sub-signal transmission part 1081 can be manufactured using the same mask. This is conducive to simplifying the manufacturing process of the display panel 100 and improving the manufacturing efficiency.

[0081] In some embodiments, the second sub-signal transmission part 1081 disposed on the same layer as the partition structure 140 includes a fourth metal part 10811 and a fifth metal part 10812, and the fifth metal part 10812 is disposed on a side of the fourth metal part 10811 away from the substrate 110. Such a configuration can increase the cross-sectional size of the second sub-signal transmission part 1081, thereby facilitating further reduction of impedance.

[0082] In some embodiments, the second sub-signal transmission part 1081 disposed on the same layer as the partition structure 140 further includes a sixth metal part 10813, and the sixth metal part 10813 is disposed on a side of the fourth metal part 10811 close to the substrate 110. This arrangement can further increase the cross-sectional size of the second sub-signal transmission part 1081, thereby facilitating further reduction of impedance.

[0083] Further, the material of the fourth metal part 10811 includes aluminum, and the material of the fifth metal part 10812 includes titanium. Among them, aluminum has a low resistivity, which is conducive to reducing impedance. However, aluminum is prone to diffusion when in contact with other metal oxides. Therefore, the material of the fifth metal part 10812 includes titanium, which can prevent aluminum from diffusing.

[0084] Furthermore, the display panel further includes a second electrode layer 120 , which is located on a side of the light-emitting functional layer 130 close to the substrate, and the sixth metal portion 10813 is disposed on the same layer as the second electrode layer 120 .

[0085] Furthermore, among the two first sub-signal transmission parts 1051 connected in parallel, the sixth metal part 10813 of the second sub-signal transmission part 1081 of one of them (for example, the second sub-signal transmission part 1081 arranged on the same layer as the partition structure 140) is electrically connected to the second sub-signal transmission part 1081 of the other one (for example, the second sub-signal transmission part 1081 not arranged on the same layer as the partition structure 140).

[0086] Further, the substrate 110 may include a substrate and a driving circuit layer disposed on the substrate, the first driving circuit and the second driving circuit are both located in the driving circuit layer, the third segment 107 is located in the driving circuit layer, and the other of the two second sub-signal transmission parts 1081 is disposed in the same layer and made of the same material as the third segment 107. That is, one of the two second sub-signal transmission parts 1081 is disposed in the same layer and made of the same material as the partition structure 140, and the other of the two second sub-signal transmission parts 1081 is disposed in the same layer and made of the same material as the third segment 107 of the second signal line 106. In this way, the third segment 107 and a second sub-signal transmission part 1081 disposed in the same layer therewith can be manufactured through the same process and can share a mask plate. In other words, the whole formed by the third segment 107 and a second sub-signal transmission part 1081 disposed in the same layer therewith is equivalent to the original signal line in the existing display panel 100.

[0087] In some embodiments, Figure 3As shown, the display panel 100 further includes a second electrode layer 120 and an isolation layer 160. The second electrode layer 120 includes a plurality of second electrode portions 121 arranged at intervals. The second electrode portions 121 correspond to the light-emitting functional portions 131. The light-emitting functional portions 131 are located on the side of the corresponding second electrode portions 121 away from the substrate 110. The isolation layer 160 is disposed on the side of the second electrode layer 120 away from the substrate 110. The isolation layer 160 is provided with a first opening for exposing the second electrode portions 121. The material of the isolation layer 160 is an insulating material. At least a portion of the light-emitting functional portion 131 is located in the first opening.

[0088] The second electrode layer 120 includes a plurality of second electrode portions 121 arranged at intervals, and the second electrode portion 121 is an anode of the OLED light emitting element. The isolation layer 160 is provided with a first opening for exposing the second electrode portion 121, and at least part of the light emitting functional portion 131 is located in the first opening to contact the second electrode portion 121.

[0089] Furthermore, the isolation layer 160 is further provided with a second opening, and at least a portion of the partition structure 140 is located in the second opening. Thus, the partition structure 140 can be insulated from the second electrode portion 121 by the isolation layer 160 .

[0090] Furthermore, the display panel 100 further includes a plurality of carriers 143 and a third signal line (not shown in the figure), the carrier 143 is disposed on a side of the partition structure 140 close to the substrate 110, the carrier 143 includes a conductive material, and the first electrode 151 is electrically connected to the third signal line through the carrier 143. The third signal line is a cathode voltage signal line, and the cathode voltage signal line can be connected to the carrier 143, so that the cathode voltage signal line is electrically connected to the first electrode 151 through the carrier 143.

[0091] Further, the partition structure 140 includes an isolator 141 and a blocking portion 142, wherein the blocking portion 142 is located on the side of the isolator 141 away from the substrate 110, and the orthographic projection of the isolator 141 on the substrate 110 is located within the orthographic projection of the blocking portion 142 on the substrate 110. The isolator 141 is mainly used to isolate the light-emitting functional portion 131 in the light-emitting functional layer 130, and to isolate the second electrode portion 121 in the second electrode layer 120. The blocking portion 142 is located on the side of the isolator 141 away from the substrate 110, and the orthographic projection of the top surface of the isolator 141 on the substrate 110 is located within the orthographic projection of the bottom surface of the blocking portion 142 on the substrate 110, that is, there is a certain distance between the edge of the bottom surface of the blocking portion 142 and the edge of the top surface of the isolator 141, so that the portion of the blocking portion 142 that exceeds the edge of the isolator 141 forms a step structure. The setting of the step structure is beneficial to isolating the light-emitting material layers formed on different sides of the partition structure 140 from each other during the evaporation process.

[0092] Furthermore, the isolator 141 and the carrier 143 both include conductive materials, so that the first electrode 151 is electrically connected to the isolator 141 and the carrier 143, which is conducive to reducing the impedance of the first electrode 151, thereby reducing the voltage drop of the first electrode layer 150, and further improving the overall brightness uniformity of the display panel 100.

[0093] Specifically, the first electrode portion 151 overlaps at least one of the carrier portion 143 and the insulator 141 , so that the first electrode portion 151 is electrically connected to the insulator 141 and the carrier portion 143 .

[0094] Furthermore, the supporting portion 143 and the second electrode layer 120 are made of the same material and are disposed in the same layer, so that the supporting portion 143 and the second electrode layer 120 can be manufactured through the same process and share a mask plate, thereby helping to reduce the manufacturing cost.

[0095] Further, the isolation layer 160 includes a pixel defining layer PDL.

[0096] Furthermore, the isolation layer 160 includes silicon nitride, which has good electrical insulation and can isolate and insulate the partition structure 140 from the second electrode portion 121 .

[0097] In some embodiments, the display panel 100 further includes a first encapsulation layer 170, the first encapsulation layer 170 includes a plurality of encapsulation parts 171 arranged at intervals, the encapsulation parts 171 are arranged one-to-one with the light-emitting functional parts 131, and the encapsulation parts 171 encapsulate the corresponding light-emitting functional parts 131. In this way, the light-emitting functional parts 131 can be independently encapsulated and protected one-to-one by the encapsulation parts 171.

[0098] Furthermore, the display panel 100 may further include a second encapsulation layer (not shown in the figure), which is disposed on the side of the first encapsulation layer away from the substrate 110, and covers the top surface of the first encapsulation layer 170 and the partition structure 140. The first encapsulation layer 170 encapsulates the light-emitting functional part 131 one by one through the encapsulation parts 171 arranged at intervals, and the second encapsulation layer can be encapsulated on the entire surface, thereby further improving the encapsulation performance.

[0099] Furthermore, the display panel 100 may further include a third encapsulation layer (not shown), which is disposed on the side of the second encapsulation layer away from the substrate 110. Thus, multi-layer encapsulation is achieved through the first encapsulation layer, the second encapsulation layer and the third encapsulation layer to further improve the encapsulation performance.

[0100] Specifically, the first encapsulation layer 170 and the third encapsulation layer may be inorganic film layers, and the second encapsulation layer may be an organic film layer. The inorganic film layer mainly serves to isolate water vapor and air, and the organic film layer is mainly used to provide flexibility. In addition, the second encapsulation layer is an organic film layer, which may also serve to flatten the first encapsulation layer 170.

[0101] In some embodiments, Figure 1 , Figure 5 As shown, the shape of the first display area 101 is circular, the shape of the second display area 102 is annular or part of annular, the second display area 102 is arranged around the first display area 101 in an enclosed state, and the second display area 102 extends in an arc shape in a flattened state. In this way, the display panel 100 can be applied to a smart watch. Among them, the circular first display area 101 can be used as the main display area, and the annular second display area 102 located outside the first display area 101 can be used as the secondary display area. Among them, the main display area is used to display more important information (such as time, short messages, call records, sports records, etc.), and the secondary display area is used to display secondary auxiliary information (such as date, weather, etc.).

[0102] Further, the second display area 102 has an inner edge close to the first display area 101 and an outer edge away from the first display area 101, and the display panel 100 includes a plurality of first signal lines 103; in the second display area 102, the line width of the second segment 105 closer to the outer edge is larger. The shape of the second display area 102 is a closed or unclosed ring, which makes the radius of the outer edge of the second display area 102 larger than the radius of the inner edge. Accordingly, the sub-pixels of the second display area 102 close to the outer edge are arranged more closely, so the distribution of the first signal line 103 is also denser, and the sub-pixels of the second display area 102 close to the inner edge are arranged more sparsely, so the distribution of the first signal line 103 is also sparse. In this case, the line width of the second segment 105 of the first signal line 103 closer to the outer edge in the second display area 102 is set larger. It can be understood that the increase in line width can further reduce the impedance and help reduce the brightness difference between the inner and outer sides.

[0103] In some embodiments, the display panel 100 further includes a driving component 200, which is disposed on one side of the first display area 101, and the second display area 102 is located on a side of the first display area 101 away from the driving component 200. The driving component 200 is used to provide an electrical signal to the first signal line 103, and one end of the first segment 104 away from the second segment 105 is electrically connected to the driving component 200. The driving component 200 is, for example, a driving chip, a driving circuit board, etc.

[0104] The embodiment of the second aspect of the present application provides a display panel 100, which includes a substrate 110, a light-emitting functional layer 130, a first electrode layer 150, a partition structure 140 and a first signal line 103. The light-emitting functional layer 130 is arranged on one side of the substrate 110, and the light-emitting functional layer 130 includes a plurality of light-emitting functional parts 131 arranged at intervals. The first electrode layer 150 includes a plurality of first electrode parts 151, and the first electrode parts 151 are arranged corresponding to the light-emitting functional parts 131, and the first electrode parts 151 are arranged on the side of the corresponding light-emitting functional parts 131 away from the substrate 110. The partition structure 140 is arranged on one side of the substrate 110 and partitions the adjacent light-emitting functional parts 131. At least a portion of the first signal line 103 includes two first sub-signal transmission parts 1051 connected in parallel, and one of the two first sub-signal transmission parts 1051 is arranged on the same layer as the partition structure 140 and is made of the same material.

[0105] In the display panel 100 in the embodiment of the present application, at least a portion of the first signal line 103 includes two first sub-signal transmission parts 1051 connected in parallel, and one of the two first sub-signal transmission parts 1051 is disposed in the same layer and made of the same material as the partition structure 140. By connecting the two first sub-signal transmission parts 1051 in parallel, the impedance of the first signal line 103 can be reduced, that is, the impedance of the second section 105 of the first signal line 103 is less than the impedance of the first section 104. Thus, the voltage drop phenomenon of the first signal line can be weakened, which is conducive to improving the problem of uneven brightness in different areas of the display panel 100.

[0106] It should be noted that the display panel of the embodiment of the present application has similar features to the display panel of the embodiment of the first aspect described above, such as a similar partition structure and a similar first signal line, which are not repeatedly defined here.

[0107] The third aspect of the present application provides a display device, including the display panel 100 in any of the above embodiments. The display device can be, for example, a display, a television, a digital camera, a mobile phone, a tablet computer, a navigator, or any other product or component with a display function.

[0108] In the display device in the embodiment of the present application, the first segment 104 of the first signal line 103 in the display panel 100 is located in the first display area 101, the first segment 104 is electrically connected to the first driving circuit located in the first display area 101, the second segment 105 of the first signal line 103 is at least located in the second display area 102 and is electrically connected to the second driving circuit, and the second segment 105 includes two first sub-signal transmission parts 1051 connected in parallel. By connecting the two first sub-signal transmission parts 1051 in parallel, the impedance of the second segment 105 of the first signal line 103 can be reduced, that is, the impedance of the second segment 105 of the first signal line 103 is less than the impedance of the first segment 104. As a result, the voltage drop phenomenon of the first signal line 103 in the second display area 102 can be weakened, which is conducive to improving the problem of uneven brightness in the main display area and the auxiliary display area of ​​the display panel 100.

[0109] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: The display panel has a first display area and a second display area, and includes: A first driving circuit is located in the first display area; A second driving circuit is located in the second display area; The first signal line includes a first segment and a second segment connected to the first segment, the first segment is located in the first display area and is electrically connected to the first drive circuit, the second segment is at least located in the second display area and is electrically connected to the second drive circuit, and the second segment includes two first sub-signal transmission parts connected in parallel.

2. The display panel according to claim 1, characterized in that: All structures of the second section are located in the second display area; Alternatively, a portion of the second segment is located in the second display area and is electrically connected to the second drive circuit, and another portion of the second segment extends to the first display area and is electrically connected to the first drive circuit.

3. The display panel according to claim 1, characterized in that: The display panel further includes: substrate; A light-emitting functional layer is disposed on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting functional parts disposed at intervals; A first electrode layer, comprising a plurality of first electrode portions, wherein the first electrode portions are arranged corresponding to the light-emitting functional portions, and the first electrode portions are arranged on a side of the corresponding light-emitting functional portion away from the substrate; A partition structure, disposed on one side of the substrate and partitioning adjacent light-emitting functional parts; One of the two first sub-signal transmission parts is disposed in the same layer as the partition structure and is made of the same material; Optionally, the partition structure comprises a conductive material, a plurality of the first electrode portions are arranged at intervals, and the first electrode portions are electrically connected to the partition structure; Optionally, the first sub-signal transmission part disposed on the same layer as the partition structure includes a first metal part and a second metal part, and the second metal part is disposed on a side of the first metal part away from the substrate; Optionally, the first sub-signal transmission part disposed at the same layer as the partition structure further includes a third metal part, and the third metal part is disposed on a side of the first metal part close to the substrate; Optionally, the material of the first metal part includes aluminum, and the material of the second metal part includes titanium; Optionally, the display panel further includes a second electrode layer, the second electrode layer is located on a side of the light-emitting functional layer close to the substrate, and the third metal part is disposed on the same layer as the second electrode layer; Optionally, of the two first sub-signal transmission parts connected in parallel, the third metal part of the first sub-signal transmission part of one of them is electrically connected to the first sub-signal transmission part of the other one; Optionally, the substrate includes a substrate and a driving circuit layer arranged on the substrate, the first driving circuit and the second driving circuit are both located in the driving circuit layer, the first segment is located in the driving circuit layer, and the other of the two first sub-signal transmission parts is arranged in the same layer as the first segment and is made of the same material.

4. The display panel according to claim 3, characterized in that: The display panel further includes a second signal line, wherein the second signal line includes a third segment and a fourth segment connected to the third segment; The third segment is at least located in the first display area and is electrically connected to the first driving circuit; The fourth segment is located in the second display area and is electrically connected to the second driving circuit, and the fourth segment includes two second sub-signal transmission parts connected in parallel; The second signal line and the first signal line are used to transmit different signals; Optionally, all structures of the third section are located in the first display area; Optionally, a portion of the third segment is located in the first display area and is electrically connected to the first drive circuit, and another portion of the third segment extends to the second display area and is electrically connected to the second drive circuit; Optionally, one of the first signal line and the second signal line is a data signal line, and the other of the first signal line and the second signal line is a power supply voltage signal line.

5. The display panel according to claim 4, characterized in that: One of the two second signal transmission sub-parts is disposed in the same layer as the partition structure and is made of the same material; Optionally, the second sub-signal transmission part disposed on the same layer as the partition structure includes a fourth metal part and a fifth metal part, and the fifth metal part is disposed on a side of the fourth metal part away from the substrate; Optionally, the second sub-signal transmission part disposed on the same layer as the partition structure further includes a sixth metal part, and the sixth metal part is disposed on a side of the fourth metal part close to the substrate; Optionally, the material of the fourth metal part includes aluminum, and the material of the fifth metal part includes titanium; Optionally, the display panel further includes a second electrode layer, the second electrode layer is located on a side of the light-emitting functional layer close to the substrate, and the sixth metal portion is disposed on the same layer as the second electrode layer; Optionally, the substrate includes a substrate and a driving circuit layer arranged on the substrate, the first driving circuit and the second driving circuit are both located in the driving circuit layer, the third segment is located in the driving circuit layer, and the other of the two second sub-signal transmission parts is arranged in the same layer as the third segment and is made of the same material.

6. The display panel according to claim 3, characterized in that: The display panel further includes a second electrode layer and an isolation layer, the second electrode layer includes a plurality of second electrode portions arranged at intervals, the second electrode portions correspond to the light-emitting functional portions, and the light-emitting functional portions are located on a side of the corresponding second electrode portions away from the substrate; the isolation layer is arranged on a side of the second electrode layer away from the substrate, the isolation layer is provided with a first opening for exposing the second electrode portion, and the isolation layer is made of an insulating material; at least a portion of the light-emitting functional portion is located in the first opening; Optionally, the isolation layer is further provided with a second opening, and at least a portion of the partition structure is located in the second opening; Optionally, the display panel further includes a plurality of bearing parts and a third signal line, the bearing part is arranged on a side of the partition structure close to the substrate, the bearing part includes a conductive material, and the first electrode part is electrically connected to the third signal line through the bearing part; Optionally, the partition structure comprises an isolating body and a blocking portion, the blocking portion is located on a side of the isolating body away from the substrate, and an orthographic projection of the isolating body on the substrate is located within an orthographic projection of the blocking portion on the substrate; Optionally, the isolating body and the carrying portion both comprise conductive materials; Optionally, the first electrode portion overlaps at least one of the carrier portion and the separator; Optionally, the bearing portion and the second electrode layer are made of the same material and are arranged in the same layer; Optionally, the isolation layer includes a pixel defining layer; Optionally, the isolation layer comprises silicon nitride.

7. The display panel according to any one of claims 1 to 6, characterized in that: The first display area is circular in shape, the second display area is annular in shape or a portion of annular in shape, the second display area is arranged around the first display area in an enclosed state, and the second display area extends in an arc shape in a flattened state; And / or, the display panel further includes a driving component, the driving component is disposed on one side of the first display area, and the second display area is located on a side of the first display area away from the driving component; The driving component is used to provide an electrical signal to the first signal line, and one end of the first section facing away from the second section is electrically connected to the driving component.

8. The display panel according to claim 7, characterized in that: The second display area has an inner edge close to the first display area and an outer edge far from the first display area; The display panel includes a plurality of first signal lines; In the second display area, the closer the second segment is to the outer edge, the larger its line width is.

9. A display panel, characterized in that: include: substrate; A light-emitting functional layer is disposed on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting functional parts disposed at intervals; A first electrode layer, comprising a plurality of first electrode portions, wherein the first electrode portions are arranged corresponding to the light-emitting functional portions, and the first electrode portions are arranged on a side of the corresponding light-emitting functional portion away from the substrate; A partition structure, disposed on one side of the substrate and partitioning adjacent light-emitting functional parts; A first signal line, wherein at least a portion of the first signal line includes two first sub-signal transmission parts connected in parallel, and one of the two first sub-signal transmission parts is disposed in the same layer as the partition structure and is made of the same material.

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

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