Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel provided by the application comprises a substrate, a first conductive layer, an encapsulation layer, a second conductive layer and a polaroid. The first conductive layer is located on the substrate and comprises a peripheral region and a central region. The encapsulation layer is located on the side of the first conductive layer away from the substrate. The second conductive layer is located on the side of the encapsulation layer away from the first conductive layer. The orthographic projection of the second conductive layer on the substrate at least partially overlaps the orthographic projection of the peripheral region on the substrate. In the overlapping part of the second conductive layer and the peripheral region on the substrate, and at any relative position of the second conductive layer and the peripheral region in the direction perpendicular to the substrate, the voltage in the second conductive layer is lower than or equal to the voltage in the peripheral region. The polaroid is located on the side of the second conductive layer away from the encapsulation layer. The display panel provided by the application can improve the packaging yield of the display panel, thereby improving the display quality of the display panel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a display panel and a display device. BACKGROUND

[0002] With the development of display technology, the requirement for the display quality of a display panel is higher and higher. The display panel needs to be tested for reliability in the preparation process to detect the reliability of the display panel. The display panel is prone to encapsulation failure in the reliability test process, thereby seriously affecting the display quality of the display panel. SUMMARY

[0003] Embodiments of the present application provide a display panel and a display device, which can improve the encapsulation yield of the display panel and thereby improve the display quality of the display panel.

[0004] Embodiments of the first aspect of the present application provide a display panel, comprising:

[0005] a substrate;

[0006] a first conductive layer located on the substrate, comprising a peripheral region and a central region;

[0007] an encapsulation layer located on a side of the first conductive layer away from the substrate;

[0008] a second conductive layer located on a side of the encapsulation layer away from the first conductive layer, a normal projection of the second conductive layer on the substrate at least partially overlaps a normal projection of the peripheral region on the substrate, and in the overlapping part of the second conductive layer and the peripheral region and at any relative position of the second conductive layer and the peripheral region in a direction perpendicular to the substrate, a voltage in the second conductive layer is lower than or equal to a voltage in the peripheral region;

[0009] a polarizer located on a side of the second conductive layer away from the encapsulation layer.

[0010] In the above embodiments, by setting the normal projections of the second conductive layer and the peripheral region on the substrate to at least partially overlap, and in the overlapping part, at any relative position of the second conductive layer and the peripheral region in a direction perpendicular to the substrate, the voltage in the second conductive layer is lower than or equal to the voltage in the peripheral region, that is, at any position in the region directly opposite the second conductive layer and the peripheral region, the voltage in the second conductive layer is lower than or equal to the voltage in the peripheral region, so that the second conductive layer can absorb potassium ions, reduce the number of potassium ions entering the peripheral region, reduce the influence of potassium ions on the first conductive layer, and thereby reduce the influence of the thickness change of the first conductive layer caused by the corrosion of potassium ions on the encapsulation effect of the encapsulation layer.

[0011] According to the embodiment of the first aspect of the present application, the first conductive layer comprises first signal lines and first conductive parts, the first conductive parts are located in the peripheral region, the first signal lines are connected with the first conductive parts one by one, and along the line width direction of the first signal lines, the width of the first conductive parts is greater than the width of the first signal lines; the first signal lines are used for transmitting first voltages, and the first voltages comprise forward voltages; and / or,

[0012] The first conductive layer comprises second signal lines and second conductive parts, the second conductive parts are located in the peripheral region, the second signal lines are connected with the second conductive parts one by one, and along the line width direction of the second signal lines, the width of the second conductive parts is greater than the width of the second signal lines, and the second signal lines are used for transmitting second voltages, and the second voltages comprise negative voltages. By arranging the first conductive parts and the second conductive parts, connecting the first signal lines with the first conductive parts, and along the line width direction of the first signal lines, the width of the first conductive parts is greater than the width of the first signal lines, the resistance of the first signal lines can be reduced by the first conductive parts, so as to reduce the load of the internal driving circuit of the display panel and the power consumption of the display panel. By connecting the second signal lines with the second conductive parts, and along the line width direction of the second signal lines, the width of the second conductive parts is greater than the width of the second signal lines, the resistance of the second signal lines can be reduced by the second conductive parts, so as to reduce the load of the internal driving circuit of the display panel and the power consumption of the display panel.

[0013] According to any one of the preceding embodiments of the first aspect of the present application, the number of the first conductive parts is plural, the number of the second conductive parts is plural, and the second conductive layer comprises first conductive blocks, and the orthographic projection of the first conductive blocks on the substrate overlaps with the orthographic projection of each of the first conductive parts and the second conductive parts on the substrate;

[0014] The first conductive blocks are used for transmitting third voltages, and the third voltages comprise negative voltages.

[0015] In the above-mentioned embodiments, a whole first conductive block is arranged in the second conductive layer, and there is an overlapping area at the position where the first conductive block is opposite to each of the first conductive parts and the second conductive parts, so as to protect each of the first conductive parts and the second conductive parts.

[0016] According to any one of the preceding embodiments of the first aspect of the present application, the first conductive blocks are electrically connected with the second conductive parts.

[0017] In the above-mentioned embodiments, by electrically connecting the first conductive blocks with the second conductive parts, the third voltages transmitted by the first conductive blocks are the same as the second voltages transmitted by the second conductive parts, and meanwhile, the power supply lines of the first conductive blocks can be reduced, and the circuit layout in the display panel can be simplified.

[0018] According to any one of the foregoing embodiments of the first aspect of the present application, the display panel further comprises a touch layer, the touch layer comprising a first metal layer and a second metal layer, and the first conductive block is arranged in the same layer as the first metal layer and / or the second metal layer.

[0019] In the foregoing embodiments, the first conductive block is arranged in the same layer as the first metal layer and / or the second metal layer, thereby reducing the overall thickness of the display panel and simplifying the manufacturing process.

[0020] According to any one of the foregoing embodiments of the first aspect of the present application, the number of the first conductive parts is a plurality, the number of the second conductive parts is a plurality, the second conductive layer comprises a second conductive block and a third conductive block, the orthogonal projection of the second conductive block on the substrate at least partially overlaps the projection of the first conductive part on the substrate, and the orthogonal projection of the third conductive block on the substrate at least partially overlaps the projection of the second conductive part on the substrate.

[0021] The second conductive block is configured to transmit a fourth voltage, and the fourth voltage is lower than or equal to the first voltage.

[0022] The third conductive block is configured to transmit a fifth voltage, and the fifth voltage is lower than or equal to the second voltage.

[0023] In the foregoing embodiments, the second conductive block arranged opposite to and corresponding to the first conductive part is configured to reduce the absorption of potassium ions by the first conductive part, and the third conductive block arranged opposite to and corresponding to the second conductive part is configured to reduce the absorption of potassium ions by the second conductive part. Thereby, the adverse effects caused by the swelling of the first conductive part and the second conductive part after absorbing potassium ions on the encapsulation layer can be reduced.

[0024] According to any one of the foregoing embodiments of the first aspect of the present application, the second conductive block is electrically connected to the first conductive part.

[0025] The third conductive block is electrically connected to the second conductive part.

[0026] In the foregoing embodiments, the power supply lines for providing voltages to the second conductive block and the third conductive block in the display panel can be omitted, thereby simplifying the manufacturing process.

[0027] According to any one of the foregoing embodiments of the first aspect of the present application, the display panel comprises a display area and a non-display area, the peripheral region is located in the non-display area, the second conductive block is electrically connected to the first conductive part through a first via, and the third conductive block is electrically connected to the second conductive part through a second via.

[0028] Preferably, the first via and the second via are both located in the non-display area.

[0029] In the above embodiment, the non-display area is coated with an ink layer, and the first via hole and the second via hole are arranged in the non-display area, so that the first via hole and the second via hole are located in the range covered by the ink layer, the difference in reflection effect caused by the unevenness around the first via hole and the second via hole can be improved, and the influence on the display effect of the display area is reduced.

[0030] According to the first aspect of the present application, in any of the above embodiments, the display panel further comprises a touch layer, the touch layer comprises a first metal layer and a second metal layer, the second conductive block is arranged in the same layer as one of the first metal layer and the second metal layer, and the third conductive block is arranged in the same layer as the other of the first metal layer and the second metal layer.

[0031] In the above embodiment, the overall thickness of the display panel can be reduced, and the manufacturing process is simplified.

[0032] The second aspect of the present application also provides a display device comprising any of the display panels provided by the first aspect of the present application.

[0033] In the display panel provided by the present application, the display panel comprises a substrate, a first conductive layer, an encapsulation layer, a second conductive layer and a polarizer which are sequentially formed on the substrate. Potassium ions are easily precipitated at the boundary position of the polarizer in the reliability test of the display panel, and the potassium ions are easily entered into the peripheral area of the first conductive layer. By setting the second conductive layer and the peripheral area on the substrate to at least partially overlap, and in the overlapping part, at any relative position of the second conductive layer and the peripheral area in the direction perpendicular to the substrate, the voltage in the second conductive layer is lower than or equal to the voltage in the peripheral area, that is, at any position in the area opposite to the second conductive layer and the peripheral area, the voltage in the second conductive layer is lower than or equal to the voltage in the peripheral area, so that the potassium ions can be absorbed by the second conductive layer, the number of potassium ions entering the peripheral area is reduced, the influence of potassium ions on the first conductive layer is reduced, and then the influence of the encapsulation effect of the encapsulation layer caused by the thickness change of the first conductive layer due to the corrosion of potassium ions is reduced. Wherein, the comparison between the voltage in the second conductive layer and the voltage in the peripheral area refers to the comparison between the voltages inside the second conductive layer and the peripheral area when they are both in working state. The display panel provided by the present application can protect the first conductive layer, thereby reducing the encapsulation failure induced by the thickness change of the first conductive layer, helping to improve the encapsulation yield of the display panel, improving the yield of the reliability test, and then improving the display quality and service life of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0035] Figure 1 is a structural schematic diagram of a display panel provided by the embodiments of the present application;

[0036] Figure 2 is Figure 1 is a sectional structural schematic diagram along P-P' in the display panel;

[0037] Figure 3 is Figure 1 is a sectional structural schematic diagram along M-M' in the display panel;

[0038] Figure 4 is Figure 1 is a sectional structural schematic diagram along Q-Q' in the display panel;

[0039] Figure 5 is Figure 1 is another sectional structural schematic diagram along Q-Q' in the display panel;

[0040] Figure 6 is Figure 1 is another sectional structural schematic diagram along P-P' in the display panel;

[0041] Figure 7 is Figure 1 is another sectional structural schematic diagram along Q-Q' in the display panel;

[0042] Figure 8 is Figure 1 is another sectional structural schematic diagram along Q-Q' in the display panel;

[0043] Figure 9 is Figure 1 is another sectional structural schematic diagram along Q-Q' in the display panel;

[0044] Figure 10 is a structural schematic diagram of a display device provided by the embodiments of the present application.

[0045] In the drawings:

[0046] 1-substrate; 2-first conductive layer; B-peripheral region; C-central region; 21-first signal line; 22-second signal line; 23-first conductive part; 24-second conductive part; 3-encapsulation layer; 4-second conductive layer; 41-first conductive block; 42-second conductive block; 43-third conductive block; 5-polarizer; 6-touch layer; 61-first metal layer; 62-second metal layer; AA-display area; NA-non-display area; 7-first via hole; 8-second via hole; 9-semiconductor layer; 10-first insulating layer; 11-third metal layer; 12-second insulating layer; 13-fourth metal layer; 14-third insulating layer; 15-fifth metal layer; 16-fourth insulating layer; 17-sixth metal layer; 100-display panel; 200-display device. DETAILED DESCRIPTION

[0047] Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some or all of these specific details. The description of the embodiments is merely illustrative of the present application and is not intended to limit the present application, as is apparent to one of ordinary skill in the art.

[0048] It should be noted that, in the present document, relational terms such as first and second, and the like, can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0049] The inventors have found through long-term research that in the reliability test of the display panel, the boundary of the polarizing sheet is prone to failure to release potassium ions, and the potassium ions are attracted by the metal and then electrochemically corrode the metal. There is a large piece of metal in the peripheral area of the display panel, and there is also a boundary of the polarizing sheet in the peripheral area. Therefore, in the reliability test, after the polarizing sheet fails to release potassium ions, the potassium ions are attracted by the large piece of metal and then electrochemically corrode the metal. After part of the metal corrodes, it will swell seriously, which is easy to cause the upper encapsulation layer of the large piece of metal to break and fail, so that water vapor can invade between the encapsulation layer and the substrate of the display panel, thereby causing the display panel to produce display defects such as black spots, and seriously affecting the display quality of the display panel. Based on the research on the above problems, the inventors provide a display panel and a display device to improve the packaging yield of the display panel.

[0050] In order to better understand the present application, the following will be combined with Figures 1 to 10 The display panel and the display device according to the embodiments of the present application are described in detail.

[0051] Please refer to Figure 1 and Figure 2 The present application provides a display panel 100, which comprises a substrate 1, a first conductive layer 2, an encapsulation layer 3, a second conductive layer 4 and a polarizing sheet 5. The first conductive layer 2 is located on the substrate 1 and comprises a peripheral area B and a central area C. The encapsulation layer 3 is located on the side of the first conductive layer 2 away from the substrate 1. The second conductive layer 4 is located on the side of the encapsulation layer 3 away from the first conductive layer 2, and the orthographic projection of the second conductive layer 4 on the substrate 1 at least partially overlaps the orthographic projection of the peripheral area B on the substrate 1. In the overlapping part of the orthographic projection of the second conductive layer 4 and the peripheral area B on the substrate 1, and at any relative position of the second conductive layer 4 and the peripheral area B in the direction perpendicular to the substrate 1, the voltage in the second conductive layer 4 is lower than or equal to the voltage in the peripheral area B. The polarizing sheet 5 is located on the side of the second conductive layer 4 away from the encapsulation layer 3.

[0052] The display panel 100 provided in the present application comprises a substrate 1, a first conductive layer 2, an encapsulation layer 3, a second conductive layer 4 and a polarizer 5 which are sequentially formed on the substrate 1. The potassium ions are prone to be separated at the boundary position of the polarizer 5 in the reliability test of the display panel 100, and the potassium ions are prone to enter the peripheral area B of the first conductive layer 2. By setting the orthogonal projection of the second conductive layer 4 and the peripheral area B on the substrate 1 to be at least partially overlapped, and at the overlapped part, the voltage in the second conductive layer 4 is lower than or equal to the voltage in the peripheral area B at any relative position of the second conductive layer 4 and the peripheral area B in the direction perpendicular to the substrate 1, that is, the voltage in the second conductive layer 4 is lower than or equal to the voltage in the peripheral area B at any position in the area opposite to the second conductive layer 4 and the peripheral area B, the potassium ions can be absorbed by the second conductive layer 4, the number of potassium ions entering the peripheral area B is reduced, the influence of the potassium ions on the first conductive layer 2 is reduced, and then the influence of the thickness change of the first conductive layer 2 caused by the corrosion of the potassium ions on the encapsulation effect of the encapsulation layer 3 is reduced. The voltage in the second conductive layer 4 is lower than or equal to the voltage in the peripheral area B refers to the comparison of the voltage inside the second conductive layer 4 and the peripheral area B when they are both in the working state. The display panel 100 provided in the present application can protect the first conductive layer 2, thereby reducing the encapsulation failure caused by the thickness change of the first conductive layer 2, helping to improve the encapsulation yield of the display panel 100, improving the yield of the reliability test, and then improving the display quality and service life of the display panel 100.

[0053] When the voltage in the second conductive layer 4 is equal to the voltage in the peripheral area B at any position in the area opposite to the second conductive layer 4 and the peripheral area B, the second conductive layer 4 is closer to the polarizer 5, thereby absorbing the potassium ions separated by the polarizer 5 in the first step, reducing the number of free potassium ions, and protecting the first conductive layer 2. When the voltage in the second conductive layer 4 is lower than the voltage in the peripheral area B at any position in the area opposite to the second conductive layer 4 and the peripheral area B, the second conductive layer 4 has a stronger attraction effect on the potassium ions than the first conductive layer 2, thereby further improving the absorption effect of the second conductive layer 4 on the potassium ions.

[0054] In a feasible implementation manner, as shown in Figure 1 The first conductive layer 2 comprises a first signal line 21 and a first conductive part 23, the first conductive part 23 is located in the peripheral area B, the first signal line 21 is connected with the first conductive part 23 in a one-to-one correspondence, the width of the first conductive part 23 is greater than the width of the first signal line 21 along the line width direction of the first signal line 21, the first signal line 21 is used for transmitting a first voltage, and the first voltage comprises a forward voltage; and / or,

[0055] The first conductive layer 2 includes a second signal line 22 and a second conductive portion 24. The second conductive portion 24 is located in the peripheral region B. The second signal line 22 and the second conductive portion 24 are connected in a one-to-one correspondence. Along the linewidth direction of the second signal line 22, the width of the second conductive portion 24 is greater than the width of the second signal line 22. The second signal line 22 is used to transmit a second voltage, which includes a negative voltage.

[0056] In a display panel 100, such as Figure 3 As shown, the display panel 100 includes a substrate 1, a semiconductor layer 9, a first insulating layer 10, a third metal layer 11, a second insulating layer 12, a fourth metal layer 13, a third insulating layer 14, a fifth metal layer 15, a fourth insulating layer 16, and a sixth metal layer 17 sequentially formed on the substrate 1. The display panel 100 includes devices such as transistors and capacitors. The semiconductor layer 9 forms the source region, drain region, and channel region of the transistor. The first insulating layer 10 provides insulation between the semiconductor layer 9 and the third metal layer 11. The third metal layer 11 forms the gate of the transistor and the lower electrode of the capacitor. The second insulating layer 12 provides insulation between the third metal layer 11 and the fourth metal layer 13. The fourth metal layer 13 forms the upper electrode of the capacitor. The fourth insulating layer 16 provides insulation between the fifth metal layer 15 and the sixth metal layer 17. The fifth metal layer 15 and the sixth metal layer 17 form the source and drain electrodes of the transistor. The third metal layer 11, the fourth metal layer 13, and the fifth metal layer 15 can be made of molybdenum. The sixth metal layer 17 may include a titanium metal layer, an aluminum metal layer, and another titanium metal layer stacked along a direction away from the substrate 1. The first conductive layer 2 may specifically be the sixth metal layer 17. The aluminum metal layer is susceptible to expansion due to the influence of potassium ions.

[0057] Both the first signal line 21 and the second signal line 22 can be power lines. Specifically, the first signal line 21 can be a positive power line and the second signal line 22 can be a negative power line.

[0058] By providing a first conductive part 23 and a second conductive part 24, and connecting the first signal line 21 to the first conductive part 23, with the width of the first conductive part 23 being greater than the width of the first signal line 21 along its linewidth direction, the resistance of the first signal line 21 can be reduced through the first conductive part 23, thereby reducing the load on the driving circuit within the display panel 100 and lowering the power consumption of the display panel 100. Similarly, by connecting the second signal line 22 to the second conductive part 24, with the width of the second conductive part 24 being greater than the width of the second signal line 22 along its linewidth direction, the resistance of the second signal line 22 can be reduced through the second conductive part 24, thereby reducing the load on the driving circuit within the display panel 100 and lowering the power consumption of the display panel 100.

[0059] Meanwhile, the first conductive part 23 and the second conductive part 24 are arranged in the peripheral area B, so as to reduce the influence on the light transmittance of the display area of the display panel 100 and reduce the wiring difficulty inside the display panel 100.

[0060] Specifically, when the display panel 100 is rectangular, the first conductive part 23 and the second conductive part 24 can be arranged at the lower frame position in the peripheral area B.

[0061] In a feasible implementation, as shown in the figure, Figure 4 the number of the first conductive part 23 is multiple, the number of the second conductive part 24 is multiple, the second conductive layer 4 includes a first conductive block 41, and the orthographic projection of the first conductive block 41 on the substrate 1 overlaps the orthographic projection of each first conductive part 23 and second conductive part 24 on the substrate 1.

[0062] In the above implementation, the first conductive block 41 is arranged in the second conductive layer 4, and there is an overlapping area at the position where the first conductive block 41 is opposite to each first conductive part 23 and second conductive part 24, so as to protect each first conductive part 23 and each second conductive part 24.

[0063] Specifically, the first conductive block 41 can be arranged such that the orthographic projection of the first conductive block 41 on the substrate 1 covers the orthographic projection of each first conductive part 23 and each second conductive part 24 on the substrate 1, so as to comprehensively protect any area of the first conductive part 23 and the second conductive part 24. Further improve the protection effect of the first conductive part 23 and the second conductive part 24.

[0064] In the above implementation, the first conductive block 41 is used to transmit a third voltage, the third voltage includes a negative voltage, and the third voltage is less than or equal to the second voltage.

[0065] When the first conductive block 41 is opposite to the first conductive part 23 and the second conductive part 24 at the same time, it is necessary to simultaneously satisfy that the third voltage is lower than or equal to the first voltage and the second voltage. Since the first voltage is a positive voltage and the second voltage is a negative voltage, the third voltage can only be a negative voltage, and the size is less than or equal to the size of the second voltage.

[0066] At this time, the third voltage is a negative voltage, the first voltage is a positive voltage, and a first electric field is formed between the first conductive block 41 and the first conductive part 23 in the direction from the first conductive part 23 to the first conductive block 41. Under the action of the first electric field, potassium ions are more likely to approach the first conductive block 41 and away from the first conductive part 23, so as to protect the first conductive part 23.

[0067] The third voltage is a negative voltage, and the second voltage is a negative voltage. When the voltage of the first conductive block 41 and the second conductive part 24 are the same, the first conductive block 41 is closer to the polarizer 5, so that it can absorb the potassium ions deposited by the polarizer 5 first, reduce the number of free potassium ions, and thus protect the first conductive part 23 and the second conductive part 24.

[0068] The third voltage is a negative voltage, and the second voltage is a negative voltage. When the third voltage is less than the second voltage, the first conductive block 41 has a stronger attraction effect on potassium ions than the first conductive part 23, thereby further improving the absorption effect of the first conductive block 41 on potassium ions and further enhancing the protection of the first conductive part 23.

[0069] In one feasible implementation, such as Figure 5 As shown, the first conductive block 41 is electrically connected to the second conductive part 24.

[0070] In the above embodiment, by electrically connecting the first conductive block 41 to the second conductive part 24, the third voltage used by the first conductive block 41 to transmit is the same as the second voltage used by the second conductive part 24 to transmit. At the same time, the power supply lines to the first conductive block 41 can be reduced, simplifying the circuit layout within the display panel 100.

[0071] In one feasible embodiment, the display panel 100 is a touch display panel 100, including a touch layer 6 formed on the side of the encapsulation layer 3 away from the substrate 1. The touch layer 6 includes a first metal layer 61 and a second metal layer 62. The first conductive block 41 is disposed in the same layer as the first metal layer 61 and / or the second metal layer 62.

[0072] In the above embodiments, the first conductive block 41 is disposed in the same layer as the first metal layer 61 and / or the second metal layer 62, thereby reducing the overall thickness of the display panel 100 and simplifying the manufacturing process.

[0073] Specifically, such as Figure 6 As shown, when the first conductive block 41 and the second metal layer 62 are disposed in the same layer, the distance between the first conductive block 41 and the polarizer 5 can be smaller, so as to absorb the potassium ions deposited by the polarizer 5.

[0074] In one feasible implementation, such as Figure 7 As shown, there are multiple first conductive parts 23 and multiple second conductive parts 24. The second conductive layer 4 includes a second conductive block 42 and a third conductive block 43. The orthographic projection of the second conductive block 42 on the substrate 1 at least partially overlaps with the projection of the first conductive part 23 on the substrate 1. The orthographic projection of the third conductive block 43 on the substrate 1 at least partially overlaps with the projection of the second conductive part 24 on the substrate 1.

[0075] The second conductive block 42 is configured to transmit a fourth voltage, and the fourth voltage is lower than or equal to the first voltage.

[0076] The third conductive block 43 is configured to transmit a fifth voltage, and the fifth voltage is lower than or equal to the second voltage.

[0077] In the above embodiment, the first conductive part 23 is protected by arranging the second conductive block 42 corresponding to the first conductive part 23, and the second conductive part 24 is protected by arranging the third conductive block 43 corresponding to the second conductive part 24, so as to reduce the swelling of the first conductive part 23 and the second conductive part 24 caused by the absorption of potassium ions.

[0078] In the above embodiment, the first voltage is a forward voltage, and the fourth voltage can be a forward voltage or a reverse voltage. When the fourth voltage is a forward voltage, the fourth voltage is lower than the first voltage. When the fourth voltage is a reverse voltage, the fourth voltage can be greater than, less than, or equal to the first voltage. It can be understood that the comparison of the two voltages is actually a comparison of the numerical values of the two voltages without polarity, and the comparison of the two voltages is a comparison of the polarity and the numerical value.

[0079] When the first voltage and the fourth voltage are both forward voltages, and the first voltage is equal to the fourth voltage, the second conductive block 42 is closer to the polarizing plate 5 than the first conductive part 23, so as to absorb the potassium ions generated by the polarizing plate 5 in the first step, reduce the number of free potassium ions, and protect the first conductive part 23. When the first voltage and the fourth voltage are both forward voltages, and the first voltage is greater than the fourth voltage, the second conductive block 42 is closer to the polarizing plate 5 than the first conductive part 23, and the second conductive block 42 has a stronger attraction effect on potassium ions than the first conductive part 23, so as to further improve the absorption effect of the second conductive block 42 on potassium ions. When the fourth voltage is a reverse voltage, the second conductive block 42 has a stronger attraction effect on potassium ions than the first conductive part 23, so as to further improve the absorption effect of the second conductive layer 4 on potassium ions.

[0080] When the second voltage and the fifth voltage are both negative voltages, and the second voltage is equal to the fifth voltage, the third conductive block 43 is closer to the polarizer 5 than the second conductive part 24, so that the potassium ions generated by the polarizer 5 can be absorbed in a first step, reducing the number of free potassium ions, thereby protecting the second conductive part 24. When the second voltage and the fifth voltage are both negative voltages, and the value of the second voltage is smaller than the fifth voltage (i.e., the second voltage is higher than the fifth voltage), the third conductive block 43 is closer to the polarizer 5 than the second conductive part 24, and the third conductive block 43 has a stronger attraction effect on potassium ions than the second conductive part 24, thereby further improving the absorption effect of the third conductive block 43 on potassium ions.

[0081] In a feasible implementation, as shown in FIG. 1, the second conductive block 42 is electrically connected with the first conductive part 23. Thus, the power supply line for providing the voltage for the second conductive block 42 in the display panel 100 can be omitted, thereby simplifying the preparation process. Figure 8

[0082] In a feasible implementation, the third conductive block 43 is electrically connected with the second conductive part 24. Thus, the power supply line for providing the voltage for the third conductive block 43 in the display panel 100 can be omitted, thereby simplifying the preparation process.

[0083] In a feasible implementation, the display panel 100 includes a display area and a non-display area, and the peripheral region B is located in the non-display area. The second conductive block 42 is electrically connected with the first conductive part 23 through the first via hole 7, and the third conductive block 43 is electrically connected with the second conductive part 24 through the second via hole 8.

[0084] The first via hole 7 and the second via hole 8 are both located in the non-display area.

[0085] In the above implementation, the non-display area A is coated with an ink layer. By arranging the first via hole 7 and the second via hole 8 in the non-display area A, the first via hole 7 and the second via hole 8 can be located in the range covered by the ink layer, so that the difference in the reflection effect caused by the unevenness around the first via hole 7 and the second via hole 8 can be improved, and the influence on the display effect of the display area can be reduced.

[0086] It can be understood that the first via hole 7 and the second via hole 8 can also be located in the display area, which can be adjusted according to the wiring condition in the display panel 100, and the present application does not make special limitations.

[0087] In a feasible implementation, the display panel 100 further includes a touch layer 6. The touch layer 6 includes a first metal layer 61 and a second metal layer 62. The second conductive block 42 is arranged in the same layer as one of the first metal layer 61 and the second metal layer 62, and the third conductive block 43 is arranged in the same layer as the other one of the first metal layer 61 and the second metal layer 62.

[0088] ​In the above embodiment, the display panel 100 is a touch display panel 100, and the touch layer 6 is formed on the side of the encapsulation layer 3 away from the substrate 1. The touch layer 6 includes the first metal layer 61 and the second metal layer 62 stacked in a direction away from the substrate 1. The second conductive layer 4 can be disposed in the same layer as the first metal layer 61 and / or the second metal layer 62, thereby reducing the overall thickness of the display panel 100 and simplifying the manufacturing process.

[0089] As shown in FIG. 1, the display panel 100 includes the substrate 1, the first conductive layer 2, the second conductive layer 4, the encapsulation layer 3, the touch layer 6, and the polarizer 5. Figure 9 When the second conductive layer 4 is disposed in the same layer as the second metal layer 62, the distance between the second conductive layer 4 and the polarizer 5 can be small, so that the potassium ions released from the polarizer 5 can be absorbed.

[0090] Specifically, when the second conductive block 42 is disposed in the same layer as one of the first metal layer 61 and the second metal layer 62, and the third conductive block 43 is disposed in the same layer as the other of the first metal layer 61 and the second metal layer 62, the orthographic projection of the second conductive block 42 on the substrate 1 and the orthographic projection of the third conductive block 43 on the substrate 1 can be arranged without overlapping, so as to avoid mutual interference between the second conductive block 42 and the third conductive block 43.

[0091] The display device 200 provided by the present application can be a mobile terminal such as a mobile phone or a tablet computer, or a fixed terminal such as a television or a display. Figure 10 The display device 200 provided by the present application can be a mobile terminal such as a mobile phone or a tablet computer, or a fixed terminal such as a television or a display.

[0092] The display device 200 provided by the present application can be a mobile terminal such as a mobile phone or a tablet computer, or a fixed terminal such as a television or a display.

[0093] The embodiments described above are not exhaustive in terms of details, nor do they limit the application to only the specific embodiments. It is obvious that many modifications and variations can be made based on the above description. The embodiments are selected and described in detail in order to better explain the principles and practical applications of the application, so that those skilled in the art can well utilize the application and make modifications based on the application. The application is limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized by, The application relates to a display device, comprising: a substrate; a first conductive layer on the substrate, comprising a peripheral region and a central region; an encapsulation layer on the side of the first conductive layer away from the substrate; a second conductive layer on the side of the encapsulation layer away from the first conductive layer, the orthographic projection of the second conductive layer on the substrate at least partially overlaps the orthographic projection of the peripheral region on the substrate, in the overlapping part of the second conductive layer and the peripheral region on the substrate, and at any relative position of the second conductive layer and the peripheral region in the direction perpendicular to the substrate, the voltage in the second conductive layer is lower than or equal to the voltage in the peripheral region; a polarizer on the side of the second conductive layer away from the encapsulation layer; wherein the first conductive layer comprises first signal lines and first conductive parts, the first conductive parts are located in the peripheral region, the first signal lines are connected to the first conductive parts one by one, along the line width direction of the first signal lines, the width of the first conductive parts is greater than the width of the first signal lines; the first signal lines are used for transmitting a first voltage, and the first voltage comprises a positive voltage; and / or the first conductive layer comprises second signal lines and second conductive parts, the second conductive parts are located in the peripheral region, the second signal lines are connected to the second conductive parts one by one, along the line width direction of the second signal lines, the width of the second conductive parts is greater than the width of the second signal lines, the second signal lines are used for transmitting a second voltage, and the second voltage comprises a negative voltage.

2. The display panel of claim 1, wherein, The number of the first conductive parts is plural, the number of the second conductive parts is plural, the second conductive layer comprises a first conductive block, and the orthographic projection of the first conductive block on the substrate overlaps the orthographic projection of each of the first conductive parts and the second conductive parts on the substrate; the first conductive block is used for transmitting a third voltage, and the third voltage comprises a negative voltage.

3. The display panel of claim 2, wherein, The first conductive block is electrically connected to the second conductive parts.

4. The display panel of claim 2 or 3, wherein, Further comprising a touch layer, the touch layer comprises a first metal layer and a second metal layer, and the first conductive block is arranged in the same layer as the first metal layer and / or the second metal layer.

5. The display panel of claim 1, wherein, The number of the first conductive parts is plural, the number of the second conductive parts is plural, the second conductive layer comprises a second conductive block and a third conductive block, the orthographic projection of the second conductive block on the substrate at least partially overlaps the projection of the first conductive parts on the substrate, and the orthographic projection of the third conductive block on the substrate at least partially overlaps the projection of the second conductive parts on the substrate; the second conductive block is used for transmitting a fourth voltage, and the fourth voltage is lower than or equal to the first voltage; the third conductive block is used for transmitting a fifth voltage, and the fifth voltage is lower than or equal to the second voltage.

6. The display panel of claim 5, wherein, The second conductive block is electrically connected to the first conductive parts; the third conductive block is electrically connected to the second conductive parts.

7. The display panel of claim 6, wherein, The display panel comprises a display area and a non-display area, the peripheral area is located in the non-display area, the second conductive block is electrically connected with the first conductive part through a first via, and the third conductive block is electrically connected with the second conductive part through a second via.

8. The display panel of claim 7, wherein, The first via and the second via are both located in the non-display area.

9. The display panel of claim 5, wherein, Further comprising a touch layer, the touch layer comprises a first metal layer and a second metal layer, the second conductive block is arranged in the same layer with one of the first metal layer and the second metal layer, and the third conductive block is arranged in the same layer with the other of the first metal layer and the second metal layer.

10. A display device, characterized by comprising: The display panel comprises a display panel as claimed in any one of claims 1-9.

Images