Display screen of an electronic device and electronic device

Abstract

The application discloses a display screen of an electronic device and the electronic device, and belongs to the technical field of electronic products. The display screen of the electronic device comprises at least two functional layers stacked in the thickness direction of the display screen, at least one edge of the functional layers is provided with a conductive wire and a heating element, the conductive wire is electrically connected with the heating element, and / or the at least two functional layers comprise a first functional layer, a second functional layer and a third functional layer, the material type of the first functional layer is the same as that of the third functional layer, and the material type of the first functional layer and that of the third functional layer are both different from that of the second functional layer, the orthographic projection of the second functional layer is located in the inside of the orthographic projection of the first functional layer and the orthographic projection of the third functional layer in the thickness direction of the display screen, so that the edge of the first functional layer and the edge of the third functional layer are connected.

Description

Technical Field

[0001] This application belongs to the field of electronic product technology, specifically relating to a display screen and an electronic device. Background Technology

[0002] The display screen is the main component that enables electronic devices to display their functions. With the continuous development of display screen technology, users are increasingly pursuing narrow bezels to increase the display area. However, narrow bezel technology means that the edges of the display screen are closer to the edges of the electronic device, making it easier for moisture to enter the display screen.

[0003] Specifically, taking flexible screens in displays as an example, because flexible screens are relatively less waterproof than rigid screens, moisture is more likely to enter the edges of flexible screens during the use of electronic devices. This can easily lead to corrosion of the edges of the flexible screen, resulting in black spots. Furthermore, the moisture can corrode the metal wires of the relevant display signal lines inside the flexible screen, which can easily cause the flexible screen to fail to display properly, thus affecting the display effect.

[0004] In summary, the display screens involved in the relevant technologies suffer from the problem of moisture entering the screen, which affects the display effect. Summary of the Invention

[0005] The purpose of this application is to provide a display screen and an electronic device that can solve the problem that the display screen's display effect is affected by moisture ingress in related technologies.

[0006] This application provides a display screen for an electronic device, including at least two functional layers stacked in the thickness direction of the display screen.

[0007] At least one of the functional layers has a conductive line and a heating element on its edge, the conductive line being electrically connected to the heating element; and / or,

[0008] The at least two functional layers include a first functional layer, a second functional layer, and a third functional layer. The material type of the first functional layer and the material type of the third functional layer are the same, and the material type of both is different from that of the second functional layer. In the thickness direction of the display screen, the orthographic projection of the second functional layer is located inside the orthographic projection of the first functional layer and the orthographic projection of the third functional layer, so that the edge of the first functional layer and the edge of the third functional layer are connected.

[0009] This application provides an electronic device, including a housing, a circuit board, and a display screen as described above. The display screen and the circuit board are both disposed in the housing, and the conductive wires are electrically connected to the circuit board in a way that allows for switching on and off.

[0010] In this embodiment, since conductive lines and heating elements are provided on the edges of at least one of the at least two functional layers of the display screen, and the conductive lines and heating elements are electrically connected, when liquid enters the edge of a functional layer, the heating element can start heating to remove the liquid from the edge of the functional layer. This prevents the edge of the display screen from being corroded and producing black spots, and also prevents the liquid from corroding the metal wires of the relevant display signal lines within the display screen, thus ensuring that the display screen can display normally. In other words, this arrangement can avoid affecting the display screen's display effect. Simultaneously, since the liquid can be effectively removed, even if the display screen has a narrow bezel, it will not affect the display screen's display effect. And / or, since the orthographic projection of the second functional layer is located inside the orthographic projections of the first and third functional layers in the thickness direction of the display screen, the edges of the first and third functional layers are connected. That is, the first and third functional layers, which are of the same material type, are more compatible at the edges, making it less likely for liquid to enter between the first and third functional layers. This also prevents the liquid from corroding the metal wires of the relevant display signal lines within the display screen, thus ensuring that the display screen can display normally. In other words, this arrangement can also avoid affecting the display screen's display effect. Attached Figure Description

[0011] Figures 1 to 3 Schematic diagrams of structures with conductive lines and heating elements at the edge of the functional layer in different embodiments disclosed in this application;

[0012] Figure 4 A schematic diagram of the structure of the fourth edge with a second conductive line and a second heating element disclosed in the embodiments of this application;

[0013] Figure 5 and Figure 6 A partial cross-sectional view of the display screen in the width direction, as disclosed in different embodiments of this application;

[0014] Figure 7 This is a partial cross-sectional view of the display screen disclosed in the embodiment of this application along its length.

[0015] Figure 8 This is a partial structural schematic diagram of the electronic device disclosed in the embodiments of this application;

[0016] Figure 9 This is a schematic diagram of the arrangement structure of the third conductive line and the third heating element at the camera hole disclosed in the embodiments of this application;

[0017] Figure 10 This is a partial cross-sectional view of the display screen disclosed in the embodiments of this application, in the width direction, and at the camera hole.

[0018] Explanation of reference numerals in the attached figures:

[0019] 100-Functional layer, 110-Edge, 111-First edge, 112-Second edge, 113-Third edge, 114-Fourth edge, 120-First functional layer, 121-Touch layer, 122-Planar layer, 130-Second functional layer, 131-First passivation layer, 132-Second passivation layer, 133-Insulating layer, 140-Third functional layer, 141-Thin film encapsulation layer, 142-Light-emitting layer, 143-Support layer, 150-Camera hole, 160-Metal layer, 170-Groove, 180-Metal reinforcement line, 190-Annular ink area;

[0020] 200 - Conductive wire, 210 - First conductive wire, 220 - Second conductive wire, 230 - Third conductive wire;

[0021] 300 - Heating element, 310 - First heating element, 320 - Second heating element, 330 - Third heating element;

[0022] 400 - Circuit Board;

[0023] 510 - First transistor switch;

[0024] 600 - Housing;

[0025] 710 - Display chip, 720 - Touch chip, 730 - Other component chips, 740 - Connector. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0027] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0028] The display screen of the electronic device disclosed in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0029] Please refer to Figures 1-10 This application discloses a display screen for an electronic device, the disclosed display screen including at least two functional layers 100 stacked in the thickness direction of the display screen.

[0030] Please refer to Figure 1 and Figure 6 In one embodiment, at least one of the at least two functional layers 100 is provided with a conductive wire 200 and a heating element 300 on its edge 110. The conductive wire 200 is electrically connected to the heating element 300, and the conductive wire 200 can supply power to the heating element 300 so that the heating element 300 can start heating operation, thereby removing water vapor and other liquids that have entered the edge 110 of the functional layer 100. Optionally, the material of the conductive wire 200 can be titanium, aluminum, or other materials.

[0031] Please refer to Figure 5 In another embodiment, the at least two functional layers 100 may include a first functional layer 120, a second functional layer 130, and a third functional layer 140 stacked sequentially. The material type of the first functional layer 120 and the third functional layer 140 is the same, and their material types are different from those of the second functional layer 130. For example, the first functional layer 120 and the third functional layer 140 may both be organic materials, while the second functional layer 130 may be inorganic. In the thickness direction of the display screen, the orthographic projection of the second functional layer 130 is located inside the orthographic projections of the first functional layer 120 and the third functional layer 140, that is, the orthographic projection of the edge 110 of the second functional layer 130 is located inside the orthographic projections of the edge 110 of the first functional layer 120 and the edge 110 of the third functional layer 140, so that the edge 110 of the first functional layer 120 and the edge 110 of the third functional layer 140 are in contact and connected.

[0032] Since the first functional layer 120 and the third functional layer 140 are made of the same material, the bonding force between the first functional layer 120 and the third functional layer 140 is stronger. That is, the first functional layer 120 and the third functional layer 140 are more compatible at the edge, which can effectively improve the edge delamination problem of the display screen and thus prevent liquids such as water vapor from entering between the first functional layer 120 and the third functional layer 140 to a certain extent.

[0033] It should be noted that the above two embodiments can be used individually or in combination.

[0034] Furthermore, when the two embodiments described above are combined, since the heating element 300 is provided on the edge 110 of the functional layer 100, and the first functional layer 120 and the third functional layer 140 are not easily separated at the edge, this can prevent water vapor and other liquids from entering the edge of the display screen. Even if some water vapor and other liquids do enter the edge of the display screen, the heating element 300 can effectively remove this part of the water vapor and other liquids, thereby preventing the edge of the display screen from being corroded and producing black spots, and preventing liquids from corroding the metal lines of the relevant display signal lines inside the display screen.

[0035] In this embodiment, since at least one of the at least two functional layers 100 of the display screen has a conductive line 200 and a heating element 300 on its edge 110, and the conductive line 200 and the heating element 300 are electrically connected, when liquid enters the edge 110 of the functional layer 100, the heating element 300 can start heating to remove the liquid from the edge 110 of the functional layer 100. This prevents the edge 110 of the display screen from being corroded and producing black spots, and also prevents the liquid from corroding the metal wires of the related display signal lines inside the display screen, thereby ensuring that the display screen can display normally. That is, this arrangement can avoid affecting the display effect of the display screen. At the same time, since the liquid can be effectively removed, even if the display screen is a narrow bezel display screen, it will not affect the display effect of the display screen.

[0036] And / or, because the orthographic projection of the second functional layer 130 is located inside the orthographic projection of the first functional layer 120 and the third functional layer 140 in the thickness direction of the display screen, the edges 110 of the first functional layer 120 and the third functional layer 140 are connected. That is, the first functional layer 120 and the third functional layer 140, which are made of the same material type, are more compatible at the edges 110. This makes it less likely for liquid to enter between the first functional layer 120 and the third functional layer 140. This can also prevent liquid from corroding the metal wires of the relevant display signal lines in the display screen, thereby ensuring that the display screen can display normally. That is, this setting can also avoid affecting the display effect of the display screen.

[0037] Please refer to Figure 6 As can be seen from the foregoing, since the heating element 300 can effectively remove liquid entering the display screen, even if the display screen has a narrow bezel, it will not affect the display effect. That is, in the specific design process of the display screen, the width of the waterproof path with a certain total width reserved at the edge of the original display screen can be reduced. For example, the original reserved 0.5mm wide waterproof path can be designed to be 0.1mm wide. Of course, it can also be designed to be other waterproof paths with a width of less than 0.5mm, so as to increase the display area of ​​the display screen, that is, to increase the screen ratio of the display screen.

[0038] Optionally, the number of heating elements 300 can be one.

[0039] In another embodiment, the number of heating elements 300 can be at least two, with each heating element 300 spaced apart and electrically connected by a conductive line 200, that is, each heating element 300 is connected in series. The rate of removing liquid entering the edge 110 of the functional layer 100 can be increased by using multiple heating elements 300.

[0040] In a further embodiment, the heating element 300 can be a crystalline silicon resistor, specifically a low-temperature monocrystalline silicon resistor or a low-temperature polycrystalline silicon resistor. Of course, the heating element 300 can also be other components with heating functions, such as a heating element 300 made of metal oxide. When the heating element 300 is a crystalline silicon resistor, after the heating element 300 is energized, due to its high resistance, it can generate heat, thereby heating the edge 110 of the functional layer 100 and removing the liquid that has entered the edge 110 of the functional layer 100. Simultaneously, at least two of the heating elements 300 have different doping concentrations; that is, at least two of the heating elements 300 have different doping concentrations. Since these at least two heating elements 300 are spaced apart, i.e., disposed in different regions, this arrangement allows different regions of the edge 110 of the functional layer 100 to have different resistances, resulting in different temperatures in different regions. In other words, different regions have heating elements 300 with different degrees of heating, which can adaptively remove different amounts of liquid from different regions.

[0041] For example, liquids easily get into the corners of the display screen. Therefore, heating elements 300 with a higher doping concentration can be installed in these corner areas. When the heating element 300 is powered on, the corner areas can generate a higher temperature to effectively remove the liquid that has entered. Heating elements 300 with a lower doping concentration can be installed in other areas to effectively remove liquids from those areas. Furthermore, this method of selectively installing heating elements 300 with different doping concentrations in different areas can also prevent the display screen from overheating. Alternatively, please refer to... Figure 7 Of the two adjacent heating elements 300, one can be a heating element 300 with a lower doping concentration and the other can be a heating element 300 with a higher doping concentration. That is, the doping concentration of the heating elements 300 can be flexibly set according to actual needs in this embodiment. Of course, the doping concentration of each heating element 300 can also be the same.

[0042] Optionally, the functional layer 100 has a plurality of edges 110, one of which may be provided with a heating element 300 and a conductive line 200.

[0043] In another embodiment, heating elements 300 and conductive lines 200 are provided on at least two of the edges 110, and each heating element 300 is electrically connected through the conductive lines 200. That is, heating elements 300 are provided on more edges 110 of the functional layer 100, which makes the heating range of the heating elements 300 on the functional layer 100 larger, thereby removing more liquid and achieving a better removal effect.

[0044] Alternatively, please refer to Figure 2 At least one of the aforementioned edges 110 may have only one heating element 300, which extends from one end of the edge 110 to the other end of the edge 110. That is, the heating element 300 is relatively large, which allows most of the area of ​​the at least one edge 110 to be heated.

[0045] In another embodiment, please refer to Figure 1 At least one of the aforementioned edges 110 is provided with at least two heating elements 300. The heating elements 300 are spaced apart from one end of the edge 110 to the other end, and the heat generated by two adjacent heating elements 300 can be transferred to the area between them, so that a large portion of the at least one edge 110 can be heated. Furthermore, this arrangement reduces the amount of material needed to process the heating elements 300, thereby lowering production costs. In addition, as can be seen from the foregoing embodiments, different heating elements 300 can be made with different doping concentrations, i.e., different heating degrees. Therefore, this arrangement can also adapt to different scenarios requiring liquid removal.

[0046] Optionally, the multiple edges 110 of the functional layer 100 may include a first edge 111, a second edge 112, a third edge 113, and a fourth edge 114 connected in sequence. The second edge 112 may be the top edge, and the fourth edge 114 may be the bottom edge. The aforementioned at least two heating elements 300 may include a first heating element 310. The number of conductive lines 200 may be one, including a first conductive line 210. At least one of the first edge 111, the second edge 112, the third edge 113, and the fourth edge 114 is provided with a first heating element 310 and a first conductive line 210. The first heating element 310 is electrically connected to the circuit board 400 of the electronic device through the first conductive line 210.

[0047] In one embodiment, the first edge 111, the second edge 112, the third edge 113 and the fourth edge 114 may each be provided with a first heating element 310, which allows the liquid entering each edge 110 of the functional layer 100 to be removed, so as to further ensure that the display screen can display normally.

[0048] In another embodiment, please refer to Figure 3 and Figure 4 At least one of the first edge 111, the second edge 112, and the third edge 113 is provided with a first heating element 310 and a first conductive line 210. The above-mentioned at least two heating elements 300 may also include a second heating element 320. The number of conductive lines 200 may be at least two, including a second conductive line 220. The fourth edge 114 is provided with a second heating element 320 and a second conductive line 220. The second heating element 320 is electrically connected to the circuit board 400 through the second conductive line 220. That is, in this embodiment of the application, the second conductive line 220 and the second heating element 320 are separately provided on the fourth edge 114 to control the heating of the fourth edge 114 separately.

[0049] Specifically, in most electronic devices, the electronic components are located near the bottom edge of the functional layer 100, i.e., near the fourth edge 114. Therefore, the area near the fourth edge 114 is prone to unevenness, which makes it easier for liquids such as water vapor to enter the fourth edge 114. Therefore, in this embodiment, a second heating element 320 and a second conductive line 220 can be added separately to the fourth edge 114 so that the second heating element 320 of the fourth edge 114 can be heated independently. This eliminates the need to heat the first edge 111, the second edge 112, and the third edge 113 at the same time as heating the fourth edge 114, which can reduce energy consumption to a certain extent. At the same time, this arrangement can more effectively remove liquids such as water vapor that enter the fourth edge 114.

[0050] Optionally, the number of the first heating element 310 and the number of the second heating element 320 can both be at least two. Each first heating element 310 can be connected in series with the first conductive wire 210, and each second heating element 320 can be connected in series with the second conductive wire 220. Using multiple first heating elements 310 can increase the rate of removing liquid entering at least one of the first edge 111, the second edge 112, and the third edge 113, and using multiple second heating elements 320 can increase the rate of removing liquid entering the fourth edge 114. Of course, the number of the first heating element 310 and the number of the second heating element 320 can also both be one.

[0051] Alternatively, please refer to Figures 8 to 10A camera hole 150 may be provided on the functional layer 100. Since the camera hole 150 is usually located near the edge 110, liquids such as moisture entering the edge 110 can easily enter the camera hole 150, which can easily affect the normal operation of the camera inside the camera hole 150. Therefore, a heating element 300 may also be provided around the camera hole 150. The heating element 300 removes liquids such as moisture around the camera hole 150 by heating the area around the camera hole 150. Specifically, the above-mentioned at least two heating elements 300 may also include a third heating element 330, and the above-mentioned at least two conductive lines 200 may also include a third conductive line 230. The third conductive line 230 and the third heating element 330 are both arranged around the camera hole 150, and the third conductive line 230 and the third heating element 330 are electrically connected. The third heating element 330 can effectively remove liquids such as moisture around the camera hole 150 to ensure that the camera can work normally. Of course, the camera hole 150 may also be without a third conductive line 230 and a third heating element 330.

[0052] Optionally, the third heating element 330 is electrically connected to the circuit board 400 via the third conductive line 230, and the third conductive line 230 can be directly electrically connected to the circuit board 400.

[0053] In another embodiment, please refer to Figure 9 Since the camera hole 150 is usually located near the edge 110, that is, near the first edge 111, the second edge 112, or the third edge 113, the third conductive line 230 and the third heating element 330 are also located near the first edge 111, the second edge 112, or the third edge 113. Therefore, the third heating element 330 can be electrically connected to the first conductive line 210 located on at least one of the first edge 111, the second edge 112, and the third edge 113 through the third conductive line 230, and then electrically connected to the circuit board 400 through the first conductive line 210. This arrangement means that the third conductive line 230 does not need to be connected to the circuit board 400 separately, thereby reducing the number of connections between the circuit board 400 and the conductive line 200. At the same time, the length of the third conductive line 230 is reduced, thereby reducing production costs.

[0054] Optionally, since a camera hole 150 is provided on the functional layer 100, the functional layer 100 around the camera hole 150 is prone to cracking under stress. To avoid this, the functional layer 100 is provided with metal reinforcing lines 180 surrounding the camera hole 150. The number of metal reinforcing lines 180 is usually large, with multiple metal reinforcing lines 180 arranged around the camera hole 150 in a radial direction. These multiple metal reinforcing lines 180 can reinforce the structure of the functional layer 100 around the camera hole 150. Simultaneously, to prevent users from seeing the metal reinforcing lines 180 when using the electronic device, i.e., to avoid affecting the appearance of the display screen, the functional layer 100 is also provided with an annular ink area 190 covering the multiple metal reinforcing lines 180. The annular ink area 190 can block the multiple metal reinforcing lines 180 and avoid the camera hole 150, thus preventing users from seeing the metal reinforcing lines 180.

[0055] Furthermore, since the camera hole 150 is surrounded by a third conductive line 230 and a third heating element 330, the third conductive line 230 and the third heating element 330 can also reinforce the structure of the functional layer 100 around the camera hole 150 to a certain extent. Therefore, the embodiments of this application can reduce the number of metal reinforcing lines 180 used, and can correspondingly reduce the size of the annular ink area 190 to reduce the coverage area of ​​the annular ink area 190. For example, the size of the annular ink area 190 can be reduced by 50% to 80% to increase the screen ratio of the display screen.

[0056] Optionally, at least a portion of the conductive line 200 can be a crack detection line, which is a metal detection line on the display screen used to detect whether there are cracks in the display screen. That is, in this embodiment, the crack detection line is reused as a conductive line 200 to supply power to the heating element 300. This reduces structural complexity and production costs without affecting the basic detection function of the crack detection line. Of course, at least a portion of the conductive line 200 may not be a crack detection line. In this case, an additional conductive line 200 can be provided on the edge 110 of the functional layer 100, with the conductive line 200 spaced apart from the crack detection line.

[0057] Alternatively, please refer to Figure 5 The aforementioned at least two functional layers 100 may include at least one metal layer 160. The metal layer 160 is thermally connected to the heating element 300. The metal layer 160 can be a heat-conducting layer. When the heating element 300 is working, the heat generated by the heating element 300 can be transferred to the metal layer 160, so that liquid entering the metal layer 160 can also be removed. That is, this arrangement can increase the range of liquid removal such as water vapor. Of course, the metal layer 160 and the heating element 300 may not be thermally connected.

[0058] Optionally, when the above-mentioned at least two functional layers 100 include multiple metal layers 160, the multiple metal layers 160 can be stacked in the thickness direction of the display screen. One of the multiple metal layers 160 that is thermally connected to the heating element 300 can sequentially transfer the heat generated by the heating element 300 to the other metal layers 160. That is, this arrangement can transfer the heat generated by the heating element 300 to more different functional layers 100, so as to further increase the range of liquid removal such as water vapor, that is, the removal effect of liquid entering the display screen is better.

[0059] Alternatively, please refer to Figure 10 Since the aforementioned camera holes 150 are provided on multiple functional layers 100 of the display screen, multiple stacked metal layers 160 can also be provided around the camera holes 150. The heat generated by the third heating element 330 can be transferred to each metal layer 160. That is, this arrangement can transfer the heat generated by the third heating element 330 to more different functional layers 100 around the camera holes 150, thereby further increasing the range for removing water vapor and other liquids around the camera holes 150 to ensure that the camera can work normally. Optionally, the metal layers 160 can be one or more layers made of metals such as titanium, aluminum, molybdenum, silver, and copper.

[0060] Alternatively, please refer to Figure 5 In adjacent functional layers 100, i.e., two adjacent functional layers 100 of the same material type, one edge 110 may have a groove 170 formed therein, and part of the other layer may be embedded in the groove 170. This increases the contact area between the two adjacent functional layers 100 at the edge 110, making it less likely for delamination to occur between the two adjacent functional layers 100, and thus better preventing liquids such as water vapor from entering between the two adjacent functional layers 100. Of course, in adjacent functional layers 100, one edge 110 may not have a groove 170 formed therein. In this case, the two adjacent functional layers 100 can directly contact and connect at the edge 110.

[0061] Optionally, the display screen may further include a first transistor switch 510, which is disposed on the functional layer 100 and connected to the conductive line 200. The first transistor switch 510 is used to control the on / off connection between the heating element 300 and the circuit board 400 of the electronic device. In this embodiment, since the display screen has multiple transistor structures, such as a second transistor switch, which drives the light-emitting layer 142 (described later) in the display screen to emit light, the first transistor switch 510 can be processed simultaneously when processing the second transistor switch, thereby reducing the complexity of the process. Of course, the switch used to control the on / off connection between the heating element 300 and the circuit board 400 can also be other ordinary switches.

[0062] Alternatively, please refer to Figure 3 At least two first transistor switches 510 can be provided. One part of the first transistor switches 510 can be connected to the first conductive line 210, that is, this part of the first transistor switches 510 is used to control the on / off connection between the first heating element 310 and the circuit board 400; the other part of the first transistor switches 510 is connected to the second conductive line 220, that is, this part of the first transistor switches 510 is used to control the on / off connection between the second heating element 320 and the circuit board 400.

[0063] Optionally, the first functional layer 120, the second functional layer 130, and the third functional layer 140 may be, in sequence, a touch layer 121, a first passivation layer 131, and a thin-film encapsulation layer 141; or in sequence, a light-emitting layer 142, a second passivation layer 132, and a thin-film encapsulation layer 141; or in sequence, a planarization layer 122, an insulating layer 133, and a support layer 143. The touch layer 121, the thin-film encapsulation layer 141, the light-emitting layer 142, the planarization layer 122, and the support layer 143 are made of the same material, i.e., they can all be... The materials used to make the touch layer 121, thin film encapsulation layer 141, light-emitting layer 142, planarization layer 122, and support layer 143 can be polyimide, resin, etc. The materials used to make the first passivation layer 131, the second passivation layer 132, and the insulating layer 133 are the same, that is, they can all be inorganic materials. The materials used to make the first passivation layer 131, the second passivation layer 132, and the insulating layer 133 can be silicon oxide, silicon dioxide, silicon nitride, silicon oxynitride, aluminum oxide, or zirconium dioxide, etc.

[0064] Optionally, among the adjacent functional layers 100 mentioned above, that is, among two adjacent functional layers 100 of the same material type, the edge 110 of one layer may have a groove 170 formed therein, and a portion of the other layer may be embedded in the groove 170. Specifically, the edge 110 of the thin film encapsulation layer 141 may have a groove 170 formed therein, and a portion of the touch layer 121 may be embedded in the groove 170; and / or, the edge 110 of the light-emitting layer 142 may have a groove 170 formed therein, and a portion of the thin film encapsulation layer 141 may be embedded in the groove 170; and / or, the edge 110 of the planarization layer 122 may have a groove 170 formed therein, and a portion of the light-emitting layer 142 may be embedded in the groove 170; and / or, the edge 110 of the support layer 143 may have a groove 170 formed therein, and a portion of the planarization layer 122 may be embedded in the groove 170.

[0065] Optionally, this application also discloses an electronic device, which may include a housing 600, a circuit board 400 and the aforementioned display screen. The display screen and the circuit board 400 are both disposed in the housing 600, and the conductive line 200 is electrically connected to the circuit board 400 in a switchable manner.

[0066] Optionally, the electronic device may also include a display chip 710, which is electrically connected to the circuit board 400. The heating element 300 is electrically connected to the display chip 710 via a conductive line 200. Specifically, the conductive line 200 can be electrically connected to the display chip 710 via a transistor switch. For example, the first conductive line 210 and the second conductive line 220 can both be electrically connected to the display chip 710 via the first transistor switch 510. The display chip 710 can control the working state of the first transistor switch 510, thereby controlling the on / off state of the conductive line 200 and the circuit board 400. Furthermore, the display chip 710 can control the heating time, frequency, and energy level of the heating element 300. This ensures that the display screen does not get wet or other liquids, improves the reliability and service life of the display screen, and thus improves user satisfaction.

[0067] Optionally, the electronic device may also include a moisture sensor and a control unit. Both the moisture sensor and the control unit are located in the housing 600 and are connected to the circuit board 400. The moisture sensor is used to detect the amount of liquid in the functional layer 100. When the moisture sensor detects that there is liquid in the functional layer 100, the control unit controls the heating element 300 to be electrically connected to the circuit board 400. That is, the moisture sensor can detect in real time whether there is moisture or other liquid entering the functional layer 100, and the control unit can control the heating element 300 in real time to remove the moisture or other liquid entering the functional layer 100 in real time.

[0068] Specifically, when the water vapor sensor detects that water vapor or other liquids have entered the functional layer 100, the water vapor sensor sends a signal to the control unit. After receiving the signal, the control unit sends a signal to the display chip 710, and the first transistor switch 510 is turned on. The heating element 300 starts to work to heat and remove the water vapor or other liquids that have entered. The specific heating time and heating temperature of the heating element 300 can be set according to the actual situation. For example, the water vapor or other liquids that have entered can be divided into multiple levels, with different levels corresponding to different amounts of liquid, and thus corresponding to different heating times and heating temperatures, so as to effectively remove water vapor or other liquids.

[0069] Of course, the electronic device may not include a moisture sensor. In this case, the control unit can periodically send signals to the display chip 710, that is, periodically control the heating element 300 to work, thereby periodically removing moisture and other liquids. Specifically, the first transistor switch 510 can be periodically turned on according to the usage time of the electronic device. For example, in the first year of use, it can be heated once a month, and after one year of use, it can be heated twice a month. Of course, the specific number of heating cycles can also be set according to the actual situation.

[0070] Optionally, the moisture sensor can be located near the earpiece hole of the electronic device. The moisture sensor can be integrated with the receiver inside the earpiece hole, i.e., electrically connected to the circuit board 400 through the receiver, to reduce connection complexity. Of course, the moisture sensor can also be located in other parts of the electronic device; in this case, the moisture sensor can have its own dedicated circuitry for electrical connection to the circuit board 400.

[0071] Optionally, the electronic device may also include a touch chip 720, other component chips 730, and a connector 740. The touch chip 720 and other component chips 730 are all electrically connected to the circuit board 400. The touch chip 720 can be electrically connected to the touch layer 121. The other component chips 730 are used to implement other functions of the electronic device. The connector 740 is used to electrically connect the circuit board 400 to other circuit boards of the electronic device.

[0072] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A display screen of an electronic device, characterized by, The display screen comprises at least two functional layers (100) stacked in the thickness direction of the display screen, At least one edge (110) of the functional layer (100) is provided with a conductive wire (200) and a heating element (300), the conductive wire (200) is electrically connected with the heating element (300), the heating element (300) is located between the two functional layers (100), at least part of the conductive wire (200) is a crack detection line; and / or, The at least two functional layers (100) comprise a first functional layer (120), a second functional layer (130) and a third functional layer (140), the material type of the first functional layer (120) and the material type of the third functional layer (140) are the same, and the material type of the first functional layer (120) and the material type of the third functional layer (140) are different from the material type of the second functional layer (130), in the thickness direction of the display screen, the orthographic projection of the second functional layer (130) is located inside the orthographic projection of the first functional layer (120) and the orthographic projection of the third functional layer (140), so that the edge (110) of the first functional layer (120) and the edge (110) of the third functional layer (140) are in contact and connected.

2. The display screen of claim 1, wherein, The heating element (300) is a crystalline silicon resistance, and the number of the heating element (300) is at least two, each of the heating elements (300) is arranged at intervals and is electrically connected through the conductive wire (200), and the doping concentration of at least two of each of the heating elements (300) is different.

3. The display screen of claim 1, wherein, The functional layer (100) has a plurality of edges (110), at least two of each of the edges (110) are provided with the heating element (300) and the conductive wire (200), and each of the heating elements (300) is electrically connected through the conductive wire (200).

4. The display screen of claim 3, wherein, At least one of the edges (110) is provided with one heating element (300), the heating element (300) extends from one end of the edge (110) to the other end of the edge (110); Alternatively, at least one of the edges (110) is provided with at least two heating elements (300), each of the heating elements (300) is arranged at intervals from one end of the edge (110) to the other end of the edge (110).

5. The display screen of claim 4, wherein, The plurality of edges (110) of the functional layer (100) comprises a first edge (111), a second edge (112), a third edge (113) and a fourth edge (114) connected in sequence, the second edge (112) is a top edge, and the fourth edge (114) is a bottom edge; The at least two heating pieces (300) include a first heating piece (310) and a second heating piece (320), the number of the conductive wires (200) is at least two, including a first conductive wire (210) and a second conductive wire (220), at least one of the first edge (111), the second edge (112) and the third edge (113) is provided with the first heating piece (310) and the first conductive wire (210), the first heating piece (310) is electrically connected with the circuit board (400) of the electronic device through the first conductive wire (210), the fourth edge (114) is provided with the second heating piece (320) and the second conductive wire (220), and the second heating piece (320) is electrically connected with the circuit board (400) through the second conductive wire (220).

6. The display screen of claim 5, wherein, The functional layer (100) is provided with a camera hole (150), the at least two heating pieces (300) further include a third heating piece (330), and the at least two conductive wires (200) further include a third conductive wire (230), the third conductive wire (230) and the third heating piece (330) are arranged around the camera hole (150), and the third conductive wire (230) and the third heating piece (330) are electrically connected.

7. The display screen of claim 6, wherein, The third heating piece (330) is electrically connected with the first conductive wire (210) through the third conductive wire (230).

8. The display screen of claim 1, wherein, The at least two functional layers (100) include at least one metal layer (160), and the metal layer (160) is in thermal connection with the heating piece (300).

9. The display screen of claim 1, wherein, In adjacent functional layers (100), the edge (110) of one is provided with a groove (170), and part of the other is embedded in the groove (170).

10. The display screen of claim 1, wherein, The display screen further includes a first transistor switch (510), the first transistor switch (510) is arranged on the functional layer (100) and connected with the conductive wire (200), and the first transistor switch (510) is used for controlling the on-off of the heating piece (300) and the circuit board (400) of the electronic device.

11. An electronic device, comprising: The electronic device further includes a housing (600), a circuit board (400) and the display screen of any one of claims 1-10, the display screen and the circuit board (400) are arranged in the housing (600), and the conductive wire (200) is in electrically connectable connection with the circuit board (400).

12. The electronic device of claim 11, wherein, The electronic device further includes a water vapor sensor and a control piece, the water vapor sensor and the control piece are arranged in the housing (600) and connected with the circuit board (400), the water vapor sensor is used for detecting the amount of liquid in the functional layer (100), and in the case that the water vapor sensor detects that there is liquid in the functional layer (100), the control piece controls the electric connection between the heating piece (300) and the circuit board (400).

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