Display panel and electronic equipment

Abstract

The embodiment of the invention provides a display panel and electronic equipment. The display panel comprises a display layer and a peep-proof layer, the display layer comprises a plurality of sub-pixels, and the peep-proof layer is located on the light emitting side of the display layer; the peep-proof layer comprises two electrode layers and an electrochromic layer located between the two electrode layers, the electrochromic layer comprises a plurality of openings, and the openings are overlapped with the sub-pixels; the two electrode layers respectively comprise a conductive layer, and the conductive layer is made of a non-metal material; wherein at least one electrode layer comprises a metal wire, and the metal wire is electrically connected with the conductive layer in the electrode layer; orthographic projections of the metal wires on the display layer are located between the adjacent sub-pixels. According to the invention, quick switching of the peep-proof mode can be realized, and power consumption can be reduced.

Description

Technical Field

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

[0002] At present, users also pay great attention to personal privacy protection when using electronic products in public places. In order to meet user needs, anti-peep films and anti-peep screens have appeared on the market. The anti-peep film needs to be attached to the surface of the screen, has a noticeable granular feel, and its low transmittance will cause high power consumption, and the screen with the anti-peep film attached cannot be switched back to the sharing mode (that is, the wide viewing angle state). Existing anti-peep screens are generally made using liquid crystal dimming films or dual liquid crystal box technology, which also leads to a significant increase in power consumption. Therefore, providing a display panel that can achieve an anti-peep mode and has low power consumption is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0003] In view of this, the present application provides a display panel and an electronic device to solve the technical problem of realizing an anti-peeping mode and reducing power consumption.

[0004] In the first aspect, an embodiment of the present application provides a display panel, which includes a display layer and an anti-peeping layer, the display layer includes a plurality of sub-pixels, and the anti-peeping layer is located on the light-emitting side of the display layer; the anti-peeping layer includes two electrode layers and an electrochromic layer located between the two electrode layers, the electrochromic layer includes a plurality of openings, and the openings overlap with the sub-pixels; the two electrode layers respectively include a conductive layer, and the conductive layers are made of non-metallic materials; wherein at least one electrode layer includes a metal wire, and the metal wire and the conductive layer are electrically connected in the electrode layer; the orthographic projection of the metal wire on the display layer is located between adjacent sub-pixels.

[0005] The display panel provided by the embodiment of the present application has a metal wire arranged in at least one electrode layer of the anti-peeping layer, and the metal wire and the conductive layer are electrically connected to form a composite conductive structure. The arrangement of the metal wire can reduce the resistance of the electrode layer, improve the long-range conductive characteristics in the electrode layer, reduce the voltage drop of the voltage signal in the electrode layer, and reduce the voltage difference when the voltage changes at different positions in the electrode layer. At the same time, the electrode layer covers the entire surface, and the voltage in the electrode layer overlapping with the sub-pixel can also achieve fast following, thereby improving the uniformity of the voltage signal in the electrode layer and achieving fast switching of the anti-peeping mode. In addition, the anti-peeping layer includes an electrochromic layer, and the transmittance of the electrochromic layer is high in a high-transmittance state. Compared with the solution of realizing anti-peeping through a liquid crystal dimming film or dual liquid crystal box technology, the present application can ensure a higher transmittance in the shared mode and reduce power consumption.

[0006] In some embodiments, the metal wire and the conductive layer are in direct contact electrical connection. Such an arrangement can result in a relatively large contact area between the metal wire and the conductive layer, a relatively small resistance of the composite conductive structure, which is more conducive to improving the long-range conductive characteristics within the electrode layer, reducing the voltage drop of the voltage signal in the electrode layer, minimizing the voltage difference at different positions within the electrode layer when the voltage changes, and enhancing the uniformity of the voltage signal in the electrode layer.

[0007] In some embodiments, the metal wire is electrically connected to the conductive layer through a plurality of vias penetrating the insulating layer. When the metal wire is fabricated first, then the insulating layer is fabricated and a plurality of vias are formed, and then the conductive layer is fabricated, the conductive layer is electrically connected to the metal wire through the vias. Covering part of the metal wire with the insulating layer can improve the possible corrosion of the metal during the fabrication of the conductive layer and ensure the conductive characteristics of the electrode layer.

[0008] In some embodiments, the metal wire is located on the side of the conductive layer electrically connected to it closer to the display layer. With such an arrangement, the metal wire is fabricated first during manufacturing, and then the conductive layer is fabricated. When the conductive layer is made of an organic material, the thickness of the later-fabricated conductive layer is relatively thick, which can cover the metal wire and form a relatively flat film layer, providing a relatively flat substrate for the fabrication of subsequent film layers.

[0009] In some embodiments, the metal wire includes a first trace extending in a first direction and / or a second trace extending in a second direction, and the first direction and the second direction intersect each other.

[0010] In some embodiments, the first trace and the second trace intersect and connect to form a mesh. Such an arrangement makes the internal traces of the metal wire form a series-parallel structure, so that the resistance of the composite conductive structure formed by the metal wire and the conductive layer is lower, the long-range conductive performance of the electrode layer can be better, and thus the switching speed between the anti-peeking mode and the sharing mode of the display panel can be improved.

[0011] In some embodiments, both electrode layers include metal wires, where one electrode layer includes a first trace and the other electrode layer includes a second trace.

[0012] In some embodiments, both electrode layers include metal wires; in the thickness direction of the display panel, at least part of the two metal wires in the two electrode layers overlap. Setting at least part of the two metal wires to overlap can reduce the blocking of the light emitted by the sub-pixels by the metal wires, improve the light extraction efficiency of the sub-pixels, and in addition, it is beneficial to reduce the reflection of ambient light by the metal wires, reduce the reflectivity of the display panel, and improve the display effect.

[0013] In some embodiments, the opening is filled with a transparent medium. The overlap of the transparent medium and the sub-pixel can ensure the light extraction efficiency of the sub-pixel.

[0014] In some embodiments, the display panel further includes an isolation layer located between the display layer and the anti-peeking layer. The isolation layer is used to adjust the distance between the anti-peeking layer and the sub-pixels, so as to adjust the angle of the lateral light blocked by the anti-peeking layer and ensure the anti-peeking effect in the anti-peeking mode.

[0015] In some embodiments, the working modes of the display panel include a first mode and a second mode; the transmittance of the electrochromic layer in the first mode is less than that in the second mode.

[0016] Based on the same inventive concept, an embodiment of the present application further provides an electronic device, which includes the display panel provided in any embodiment of the present application.

[0017] The display panel and the electronic device provided in the embodiments of the present application have the following technical effects: An anti-peeking layer is provided in the display panel, and metal wires are provided in at least one electrode layer of the anti-peeking layer. The metal wires and the conductive layer are electrically connected to form a composite conductive structure. The setting of the metal wires can reduce the resistance of the electrode layer, improve the long-range conductive characteristics in the electrode layer, reduce the voltage drop of the voltage signal in the electrode layer, and reduce the voltage difference at different positions in the electrode layer when the voltage changes. At the same time, the entire surface of the electrode layer is covered, and the voltage in the electrode layer overlapping with the sub-pixels can also follow quickly, so that the uniformity of the voltage signal in the electrode layer can be improved, and the rapid switching of the anti-peeking mode can be realized. In addition, the anti-peeking layer includes an electrochromic layer, and the transmittance of the electrochromic layer in the high-transmittance state is relatively high. Compared with the solutions for realizing anti-peeking by using a liquid crystal dimming film or a dual liquid crystal cell technology, the present application can ensure a relatively high transmittance in the shared mode and can reduce power consumption. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0019] Figure 1 Schematic diagram of a display panel provided by an embodiment of the present application;

[0020] Figure 2 Another schematic diagram of a display panel provided by an embodiment of the present application;

[0021] Figure 3 Another schematic diagram of a display panel provided by an embodiment of the present application;

[0022] Figure 4 Another schematic diagram of a display panel provided by an embodiment of the present application;

[0023] Figure 5 Flow chart of a method for manufacturing a display panel provided by an embodiment of the present application;

[0024] Figure 6 Another schematic diagram of a display panel provided by an embodiment of the present application;

[0025] Figure 7 Another schematic diagram of a display panel provided by an embodiment of the present application;

[0026] Figure 8 For Figure 7 Enlarged schematic diagram at the position of region Q in;

[0027] Figure 9 Another schematic diagram of a display panel provided by an embodiment of the present application;

[0028] Figure 10 Another schematic diagram of a display panel provided by an embodiment of the present application;

[0029] Figure 11 For Figure 10 A cross-sectional schematic diagram at the position of the tangent line A - A' in;

[0030] Figure 12 Another schematic diagram of a display panel provided by an embodiment of the present application;

[0031] Figure 13 Schematic diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0032] In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0033] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0034] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0035] It should be understood that the term "and / or" used herein is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, both A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally indicates that the associated objects before and after are in an "or" relationship.

[0036] An embodiment of the present application provides a display panel. An anti-peeping layer is provided in the display panel, and the anti-peeping layer can be used to switch the display panel between an anti-peeping mode and a sharing mode. In the anti-peeping mode, the lateral light emission of the sub-pixels is blocked, and in the sharing mode, the large-angle lateral light emission of the sub-pixels is not blocked. The display panel can be applied to some electronic devices such as mobile phones, tablet computers, laptop computers, desktop computers, all-in-one computers, and smart wearable products. In some scenarios, for example, when processing private information, the work content processed involves business secrets, inputting account passwords, and other private scenarios, users hope that the information displayed on the electronic device cannot be known by other surrounding users. At this time, the electronic device can be switched to the anti-peeping working mode; when the application scenario does not involve private information, the electronic device can be switched back to the sharing mode.

[0037] Figure 1 A schematic diagram of a display panel provided by an embodiment of the present application, as Figure 1 shown, the display panel includes a driving substrate 10, a display layer 20 located above the driving substrate 10, and an anti-peeping layer 30 located on the light-emitting side of the display layer 20. The display layer 20 includes a plurality of sub-pixels 21 and a pixel definition layer 22 that separates the sub-pixels 21. The sub-pixels 21 are organic light-emitting devices. A packaging layer 40 is also provided above the display layer 20, and the packaging layer 40 is used to isolate water and oxygen to protect the sub-pixels 21. The anti-peeping layer 30 includes a first transparent conductive layer 031, an electrochromic layer 032, and a second transparent conductive layer 033. The electrochromic layer 032 includes a plurality of openings K, and the openings K overlap with the sub-pixels 21. The first transparent conductive layer 031 and the second transparent conductive layer 033 serve as two electrode layers for driving the electrochromic layer 032. When a voltage is applied between the first transparent conductive layer 031 and the second transparent conductive layer 033, the transmittance of the electrochromic layer 032 changes. When the driving electrochromic layer 032 is in a high-transmittance state, the sub-pixels 21 in the display panel emit light normally, and the lateral light of the sub-pixels 21 is unobstructed, and the display panel operates in the sharing mode; when the driving electrochromic layer 032 is in a low-transmittance state, the lateral light emission of the sub-pixels 21 in the display panel is blocked, realizing the anti-peeping mode of the display panel. By driving the electrochromic layer 032, the display panel can be switched between the anti-peeping mode and the sharing mode to meet the needs of users in different application scenarios.

[0038] In Figure 1In the structure of the anti-peeping layer 30 shown schematically, the switching speed between the anti-peeping mode and the sharing mode is directly related to the conductive characteristics of the transparent conductive layer. The transparent conductive layer needs to have the characteristics of good transparency and conductivity, while the conductivity of conventional transparent conductive materials is limited. During actual use, the voltage at different positions of the display panel may vary due to the large resistance of the transparent conductive layer, resulting in different transmittances of the electrochromic layer 032 at different positions and affecting the overall anti-peeping switching effect.

[0039] In order to improve the anti-peeping switching effect of the display panel, an embodiment of the present application further provides another display panel. Metal wires are provided in at least one electrode layer for driving the electrochromic layer. A composite conductive structure is formed by the metal wires and the conductive layer to improve the conductive performance of the electrode layer without affecting light emission, reduce the voltage difference at different positions of the display panel, and improve the overall anti-peeping switching effect.

[0040] Figure 2 Another schematic diagram of the display panel provided by the embodiment of the present application is shown in Figure 2 As shown, the display panel includes a driving substrate 10, a display layer 20 on one side of the driving substrate 10, and an anti-peeping layer 30. The display layer 20 includes a plurality of sub-pixels 21, and the anti-peeping layer 30 is located on the light-emitting side of the display layer 20. The display layer 20 further includes a pixel definition layer 22 for spacing adjacent sub-pixels 21. Figure 2 The sub-pixel 21 is only shown schematically in a simplified manner. Optionally, the sub-pixel 21 includes a stacked first electrode, a light-emitting layer, and a second electrode. A pixel circuit is provided in the driving substrate 10, and the pixel circuit is coupled to the sub-pixel 21 and used to drive the sub-pixel 21 to emit light. A packaging layer 40 is provided on the display layer 20. The anti-peeping layer 30 includes two electrode layers 31 and an electrochromic layer 32 located between the two electrode layers 31. The electrochromic layer 32 includes a plurality of openings K, and the openings K overlap with the sub-pixels 21. Each of the two electrode layers 31 includes a conductive layer 311, and the material of the conductive layer 311 is a non-metallic material. The conductive layer 311 is a whole-surface structure, and the conductive layer 311 covers the entire area where the display layer 20 is located. The conductive layer 311 is a transparent conductive layer, and its transmittance is at least >80%. In some embodiments, the transmittance of the conductive layer 311 is >90%, and even close to 100%. The material of the conductive layer 311 includes transparent conductive materials such as organic materials (such as polyethylenedioxythiophene) or inorganic materials, or metal oxides (such as indium tin oxide, indium zinc oxide, etc.). The material of the metal wire 50 includes at least one of molybdenum, titanium, and aluminum.

[0041] Among the two electrode layers 31 of the anti-peeping layer 30, the electrode layer 31 located on the side of the electrochromic layer 32 closer to the display layer 20 can be referred to as the lower electrode layer. Correspondingly, the electrode layer 31 located on the side of the electrochromic layer 32 farther from the display layer 20 can be referred to as the upper electrode layer. Among them, at least one electrode layer 31 includes a metal wire 50, and the metal wire 50 is electrically connected to the conductive layer 311 in the electrode layer 31; the orthographic projection of the metal wire 50 on the display layer 20 is located between adjacent sub-pixels 21. Figure 2 Only the case where the metal wires 50 are provided in both of the two electrode layers 31 is schematically shown. In some embodiments, only one of the two electrode layers 31 is provided with a metal wire 50. For example, the metal wire 50 is provided only in the electrode layer 31 on the side of the electrochromic layer 32 closer to the display layer 20, or the metal wire 50 is provided only in the electrode layer 31 on the side of the electrochromic layer 32 farther from the display layer 20. No further drawings are provided for illustration here.

[0042] The working modes of the display panel include a first mode and a second mode; in the first mode, the transmittance of the electrochromic layer 32 is less than that in the second mode. After voltages are applied to the two electrode layers 31 respectively, the transmittance of the electrochromic layer 32 can be controlled to realize the switching of the display panel between the first mode and the second mode. Among them, in the first mode, due to the low transmittance of the electrochromic layer 32, the electrochromic layer 32 can block the lateral light emission of the sub-pixels 21, and the first mode is equivalent to an anti-peeping mode; in the second mode, the transmittance of the electrochromic layer 32 is relatively high, and the lateral light of the sub-pixels 21 can normally emerge after passing through the electrochromic layer 32, and the second mode is equivalent to a sharing mode.

[0043] In the display panel provided by the embodiment of the present application, an anti-peeping layer 30 is provided, a metal wire 50 is provided in at least one electrode layer 31 of the anti-peeping layer 30, and the metal wire 50 and the conductive layer 311 are electrically connected to form a composite conductive structure. The setting of the metal wire 50 can reduce the resistance of the electrode layer 31, improve the long-range conductive characteristics in the electrode layer 31, reduce the voltage drop of the voltage signal in the electrode layer 31, and reduce the voltage difference at different positions in the electrode layer 31 when the voltage changes. At the same time, the entire surface of the electrode layer 31 is covered, and the voltage in the electrode layer 31 overlapping with the sub-pixels 21 can also follow quickly. Thereby, the uniformity of the voltage signal in the electrode layer 31 can be improved, and the rapid switching of the anti-peeping mode can be realized. In addition, the anti-peeping layer 30 includes an electrochromic layer 32, and the transmittance of the electrochromic layer 32 in the high-transparency state is relatively high (generally, the transmittance can reach 90%, and even some materials can approach 100% transmittance). Compared with the solutions for realizing anti-peeping through a liquid crystal dimming film or a dual liquid crystal cell technology, the present application can ensure a relatively high transmittance in the sharing mode and can reduce power consumption.

[0044] In some embodiments, such as Figure 2As shown, the opening K of the electrochromic layer 32 is filled with a transparent medium 321. The overlapping of the transparent medium 321 and the sub-pixel 21 can ensure the light extraction efficiency of the sub-pixel 21. Optionally, the transparent medium includes an organic material.

[0045] As Figure 2 shown, the display panel further includes an isolation layer 60, and the isolation layer 60 is located between the display layer 20 and the anti-peeping layer 30. The isolation layer 60 is used to adjust the distance between the anti-peeping layer 30 and the sub-pixel 21, so as to adjust the angle of the lateral light blocked by the anti-peeping layer 30 and ensure the anti-peeping effect in the anti-peeping mode. Optionally, the isolation layer 60 includes an organic isolation layer. The isolation layer made of an organic material is generally fabricated by a coating process, which has a simple process and is easy to meet the thickness requirements of the isolation layer 60. In some embodiments, an inorganic layer is further provided between the organic isolation layer and the anti-peeping layer 30. The inorganic layer can serve as a substrate for fabricating the anti-peeping layer 30, increasing the adhesion between the anti-peeping layer 30 and the underlying organic isolation layer and enhancing the structural stability.

[0046] In some embodiments, as Figure 2 shown, the metal wire 50 is in direct contact and electrically connected to the conductive layer 311. Such an arrangement can make the contact area between the metal wire 50 and the conductive layer 311 relatively large, the resistance of the composite conductive structure relatively small, which is more conducive to improving the long-range conductive characteristics in the electrode layer 31, reducing the voltage drop of the voltage signal in the electrode layer 31, reducing the voltage difference at different positions in the electrode layer 31 when the voltage changes, and enhancing the voltage signal uniformity of the electrode layer 31.

[0047] In some embodiments, as Figure 2 shown, the metal wire 50 is located on the side of the conductive layer 311 connected thereto close to the display layer 20. With such an arrangement, the metal wire 50 is fabricated first and then the conductive layer 311 is fabricated during manufacturing. When the conductive layer 311 is made of an organic material, the thickness of the subsequently fabricated conductive layer 311 is relatively thick, which can cover the metal wire 50 and form a relatively flat film layer, providing a relatively flat substrate for the fabrication of subsequent film layers.

[0048] In some other embodiments, Figure 3 is a schematic diagram of another display panel provided by an embodiment of the present application. As Figure 3 shown, among the two electrode layers 31, the metal wire 50 is located on the side of the conductive layer 311 connected thereto away from the display layer 20. When fabricating the electrode layer 31, the conductive layer 311 is fabricated first, and then the metal wire 50 is fabricated and electrically connected to the conductive layer 311.

[0049] In some other embodiments, Figure 4 is a schematic diagram of another display panel provided by an embodiment of the present application. As Figure 4As shown, in the lower electrode layer, the metal wire 50 is located on the side of the conductive layer 311 connected thereto away from the display layer 20. In the upper electrode layer, the metal wire 50 is located on the side of the conductive layer 311 connected thereto close to the display layer 20.

[0050] An embodiment of the present application further provides a manufacturing method of a display panel, which can be used to manufacture the display panel as Figure 2 provided. Figure 5 The flowchart of a manufacturing method of a display panel provided by an embodiment of the present application is as follows. As Figure 5 shown, the manufacturing method includes:

[0051] Step S101: After sequentially manufacturing the display layer 20 and the encapsulation layer 40 on the driving substrate 10, manufacture the isolation layer 60.

[0052] Step S102: Manufacture the metal wire 50. The orthographic projection of the metal wire 50 on the display layer 20 is located between adjacent sub-pixels 21, and the metal wire 50 avoids the light-emitting area of the sub-pixel 21 to avoid affecting light emission.

[0053] Step S103: Manufacture the conductive layer 311 on the metal wire 50. The conductive layer 311 is electrically connected to the metal wire 50, and the conductive layer 311 and the metal wire 50 together form the electrode layer 31.

[0054] Step S104: Manufacture a plurality of transparent media 321, and the transparent media 0321 overlap with the sub-pixels 21. Among them, a printing process can be used to manufacture a plurality of transparent media 321.

[0055] Step S105: Manufacture the electrochromic layer 32, for example, print an electrochromic material to form the electrochromic layer 32. The area where the transparent medium 321 is located is the opening K of the electrochromic layer 32.

[0056] Step S106: Repeat Step S102 and Step S103 to manufacture the electrode layer 31 on the side of the electrochromic layer 32 away from the display layer 20. The electrode layer 31, the electrochromic layer 32, and the electrode layer 31 are stacked to form the anti-peeping layer 30.

[0057] In the display panel manufactured by using the Figure 5 manufacturing method provided by the embodiment, the metal wire 50 is located on the side of the conductive layer 311 electrically connected thereto close to the display layer 20. When manufacturing, swapping the manufacturing order of Step S102 and S103 can make the metal wire 50 located on the side of the conductive layer 311 electrically connected thereto away from the display layer 20.

[0058] In some embodiments, the display panel is an organic light-emitting display panel, and the sub-pixel 21 is an organic light-emitting device. When manufacturing the conductive layer 311, in order to avoid the failure of the sub-pixel 21, it is necessary to control the process temperature, for example, the temperature is generally 90°C.

[0059] In some other embodiments, the sub-pixel 21 may also be an inorganic light-emitting device. Optionally, the display panel may also be a liquid crystal display panel.

[0060] In some embodiments, Figure 6 is another schematic diagram of a display panel provided by an embodiment of the present application. As Figure 6 shown, in the electrode layer 31 on the side of the electrochromic layer 32 close to the display layer 20, the metal wire 50 is electrically connected to the conductive layer 311 through a plurality of vias V penetrating the insulating layer 312. The series-parallel connection of the metal wire 50 and the conductive layer 311 can reduce the resistance of the electrode layer 31. When manufacturing the lower electrode layer, the metal wire 50 is first manufactured, then the insulating layer 312 is manufactured and a plurality of vias V are formed, and then the conductive layer 311 is manufactured. The conductive layer 311 is electrically connected to the metal wire 50 through the vias V. Covering part of the metal wire with the insulating layer can improve the possible corrosion of the metal during the manufacturing process of the conductive layer 311 and ensure the conductive characteristics of the electrode layer 31.

[0061] Figure 6 schematically shows that the metal wire 50 in the lower electrode layer is electrically connected to the conductive layer 311 through a plurality of vias V penetrating the insulating layer 312. In some other embodiments, the metal wire 50 in the upper electrode layer is located on the side of the conductive layer 311 away from the display layer 20, and the metal wire 50 is electrically connected to the conductive layer 311 through a plurality of vias penetrating the insulating layer, which is not shown in the drawings here.

[0062] In some embodiments, Figure 7 is another schematic diagram of a display panel provided by an embodiment of the present application. As Figure 7 shown, the metal wire 50 includes a first trace 51 extending along a first direction a and a second trace 52 extending along a second direction b, and the first direction a and the second direction b intersect with each other. The first trace 51 extending along the first direction a means that the trace direction of the first trace 51 is the first direction a, and does not limit the shape of the first trace 51, that is, the first trace 51 can be a straight line, a broken line or a curve. Similarly, the shape of the second trace 52 is not limited either.

[0063] As Figure 7 shown, a first signal terminal 313 is further provided in the display panel, and the conductive layer 311 is electrically connected to the first signal terminal 313. A driving chip ( Figure 7 not shown) is further provided in the display panel. The first signal terminal 313 is connected to the output terminal of the driving chip. The driving chip provides a voltage signal to the first signal terminal 313, and then provides the voltage signal to the conductive layer 311 through the first signal terminal 313. Signal terminals corresponding to the two electrode layers 31 are respectively provided in the display panel. Figure 7It is shown in [Figure 0] that the first signal terminal 313 is disposed below the display panel, so that the signals in the electrode layer 31 are transmitted from bottom to top, and there will be a voltage drop during the signal transmission process. In the embodiment of the present application, a metal wire 50 is disposed in the electrode layer 31 and electrically connected to the conductive layer 311, which can improve the long-range conductivity characteristics of the electrode layer 31 and can reduce Figure 7 the voltage difference between the upper and lower ends of the electrode layer 31 in the embodiment, which is beneficial to improving the uniformity of the voltage signal in the electrode layer 31 and realizing the rapid switching of the anti-peeping mode.

[0064] Figure 8 For Figure 7 the enlarged schematic diagram at the position of region Q in [Figure 0], as Figure 8 shown, the sub-pixel 21 includes a first sub-pixel 211, a second sub-pixel 212, and a third sub-pixel 213 with different colors. The first trace 51 extending along the first direction a and the second trace 52 extending along the second direction b are respectively located between adjacent sub-pixels 21. The conductive layer 311 is a whole-layer structure, and the metal wire 50 is electrically connected to the conductive layer 311 to form a composite conductive structure. The long-range conductivity characteristics of the electrode layer are improved by using the metal wire 50, and the voltage difference at different positions in the electrode layer during voltage change is reduced. At the same time, in the region corresponding to the sub-pixel 21, charge transfer is carried out by relying on the conductive layer 311 (as Figure 8 shown by the black arrow in [Figure 0]), which can ensure that the charges in the electrode layer in the region corresponding to the sub-pixel 21 are uniform and realize the rapid following of the voltage in this region. The design of the embodiment of the present application can realize the rapid transition between the anti-peeping mode and the sharing mode.

[0065] Figure 7 It is shown in [Figure 0] that the metal wire 50 in the electrode layer includes both the first trace 51 and the second trace 52 at the same time. In some other embodiments, the metal wire 50 in one electrode layer 31 only includes the first trace 51 or only includes the second trace 52. For example, the metal wires 50 in both electrode layers 31 include the first trace 51 or both include the second trace 52, or one of the two electrode layers 31 includes the first trace 51 and the other includes the second trace 52.

[0066] Figure 7 It is shown in [Figure 0] a signal supply method of the electrode layer 31. At least one first signal terminal 313 is disposed on one side of the display panel, and a voltage signal is provided to the electrode layer 31 through the first signal terminal 313.

[0067] In another embodiment, Figure 9 This is another schematic diagram of the display panel provided by the embodiment of the present application, as Figure 9As shown, the display panel further includes a voltage bus 70 that surrounds the electrode layer 31 and is electrically connected to the electrode layer 31. A second signal terminal 314 is also provided in the display panel. The voltage bus 70 is electrically connected to the second signal terminal 314, and the second signal terminal 314 is also electrically connected to the driving chip. The driving chip provides a voltage signal to the second signal terminal 314, and then provides it to the voltage bus 70 through the second signal terminal 314. Using the voltage bus 70 to provide a signal to the electrode layer 31 is beneficial to improving the uniformity of the voltage signal in the electrode layer 31.

[0068] In one embodiment, respective corresponding voltage buses 70 and second signal terminals 314 are provided for the two electrode layers 31 of the anti-peeking layer 30.

[0069] In one embodiment, the first sub-pixel 211 is a red sub-pixel, the second sub-pixel 212 is a green sub-pixel, and the third sub-pixel 213 is a blue sub-pixel. Figure 8 The arrangement of the sub-pixels 21 is only schematically shown and is not a limitation on the embodiments of the present application.

[0070] In some embodiments, as Figure 7 shown, the first trace 51 and the second trace 52 are cross-connected to form a mesh. Such an arrangement makes the internal traces of the metal line 50 form a series-parallel structure, so that the resistance of the composite conductive structure formed by the metal line 50 and the conductive layer 311 is lower, which can make the long-range conductive performance of the electrode layer 31 better, and further improve the switching speed between the anti-peeking mode and the sharing mode of the display panel.

[0071] In some embodiments, Figure 10 is another schematic diagram of the display panel provided by the embodiment of the present application. Figure 11 is Figure 10 a schematic cross-sectional view at the position of the tangent line A-A′ in. To distinguish the first trace 51 and the second trace 52 in the figure, different patterns are filled in the figure to indicate the first trace 51 and the second trace 52. Combining Figure 10 and Figure 11 it can be seen that both electrode layers 31 include metal lines 50. One electrode layer 31 includes the first trace 51, and the other electrode layer 31 includes the second trace 52.

[0072] From Figure 10 the top view schematic diagram, it can be seen that metal lines 50 are arranged between any two adjacent sub-pixels 21, and the wiring of the metal lines 50 is relatively dense. In another embodiment, Figure 12 is another schematic diagram of the display panel provided by the embodiment of the present application, as Figure 12As shown, the metal wire 50 includes a first wire 51 extending along a first direction a and a second wire 52 extending along a second direction b. The metal wire 50 is arranged only between some adjacent two sub-pixels 21, and the wiring of the metal wire 50 is relatively sparse.

[0073] In some embodiments, as Figure 2 shown, both of the two electrode layers 31 include the metal wire 50; and along the thickness direction of the display panel, at least a part of the two metal wires 50 in the two electrode layers 31 overlap. As Figure 7 in the embodiment, the metal wires 50 in the two electrode layers 31 respectively form a mesh wire, and the two metal wires 50 in the two electrode layers 31 overlap. Such an arrangement can make the uniformity of the voltage signals in the two electrode layers 31 better, and improve the switching speed between the anti-peeping mode and the sharing mode of the display panel. And setting at least a part of the two metal wires 50 to overlap can reduce the blocking of the light emitted by the sub-pixels 21 by the metal wire 50, improve the light-emitting efficiency of the sub-pixels 21, and in addition, it is beneficial to reduce the reflection of the ambient light by the metal wire 50, reduce the reflectivity of the display panel, and improve the display effect.

[0074] In some embodiments, the line width of the metal wire 50 is 1-20 μm. Preferably, one metal wire 50 is arranged between two adjacent sub-pixels 21.

[0075] In some embodiments, the metal wire 50 is relatively evenly distributed in the electrode layer 31.

[0076] Based on the same inventive concept, the embodiments of the present application further provide an electronic device. Figure 13 As shown in the schematic diagram of an electronic device provided by the embodiments of the present application, as Figure 13 shown, the electronic device includes the display panel 100 provided by any embodiment of the present application. The structure of the display panel 100 has been described in the above embodiments and will not be repeated here. The electronic device can be, for example, an electronic device such as a mobile phone, a tablet computer, a notebook computer, a desktop computer, an all-in-one computer, a smart wearable product, etc.

[0077] For the same and similar parts between the various embodiments in this specification, reference can be made to each other. In particular, for the device embodiments and the terminal embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiments.

Claims

1. A display panel, characterized in that, The display panel includes a display layer and a viewing angle-limiting layer. The display layer includes a plurality of sub-pixels, and the viewing angle-limiting layer is located on the light-emitting side of the display layer; The viewing angle-limiting layer includes two electrode layers and an electrochromic layer located between the two electrode layers. The electrochromic layer includes a plurality of openings that overlap with the sub-pixels; the two electrode layers each include a conductive layer, and the material for making the conductive layer is a non-metallic material; Wherein, at least one of the electrode layers includes metal wires, and in the electrode layer, the metal wires and the conductive layer are electrically connected; the orthographic projection of the metal wires on the display layer is located between adjacent sub-pixels.

2. The display panel according to claim 1, wherein The metal wires and the conductive layer are directly in contact and electrically connected.

3. The display panel according to claim 1, wherein The metal wires are electrically connected to the conductive layer through a plurality of vias penetrating through an insulating layer.

4. The display panel according to claim 1, wherein The metal wires are located on the side of the conductive layer electrically connected to them and close to the display layer.

5. The display panel according to claim 1, wherein The metal wires include a first trace extending in a first direction and / or a second trace extending in a second direction, and the first direction and the second direction intersect with each other.

6. The display panel according to claim 5, wherein The first trace and the second trace intersect and connect with each other to form a mesh.

7. The display panel according to claim 5, wherein Both of the two electrode layers include the metal wires, and the first trace is included in one of the electrode layers, and the second trace is included in the other electrode layer.

8. The display panel according to claim 1, wherein Both of the two electrode layers include the metal wires; in the thickness direction of the display panel, at least part of the two metal wires in the two electrode layers overlap.

9. The display panel according to claim 1, wherein The openings are filled with a transparent medium.

10. The display panel according to claim 1, wherein The display panel further includes an isolation layer, and the isolation layer is located between the display layer and the viewing angle-limiting layer.

11. The display panel according to claim 1, wherein The working modes of the display panel include a first mode and a second mode; In the first mode, the transmittance of the electrochromic layer is less than the transmittance of the electrochromic layer in the second mode.

12. An electronic device, characterized in that, Including the display panel according to any one of claims 1 to 11.

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