Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises a first light-emitting element, and light emitted by the first light-emitting element forms a first image on the first surface of the display panel; light emitted by the second light-emitting element forms a second image on the second surface of the display panel, and the first surface is opposite to the second surface. According to the embodiment of the invention, the display performance of a display product can be improved.

Description

Technical Field

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

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

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

[0004] The embodiments of the present application provide a display panel and a display device, which are beneficial to improving the display performance of display products.

[0005] In a first aspect, an embodiment of the present application provides a display panel, comprising: a first light-emitting element, light emitted by the first light-emitting element forms a first image on a first surface of the display panel; a second light-emitting element, light emitted by the second light-emitting element forms a second image on a second surface of the display panel, the first surface and the second surface are opposite to each other.

[0006] In a possible implementation of the first aspect, the first light-emitting element and the second light-emitting element are stacked in a thickness direction of the display panel, and the first light-emitting element is close to the first surface, and the second light-emitting element is close to the second surface;

[0007] Preferably, the first light-emitting element comprises a first anode, a first light-emitting layer and a first cathode, the first anode is located on a side of the first light-emitting layer facing the first surface, and the first cathode is located on a side of the first light-emitting layer facing away from the first surface;

[0008] The second light-emitting element includes a second anode, a second light-emitting layer and a second cathode. The second anode is located on the side of the second light-emitting layer facing the second surface, and the second cathode is located on the side of the second light-emitting layer facing away from the second surface. The first cathode and the second cathode are the same cathode, and the first anode and the second anode are both transparent electrodes.

[0009] In a possible implementation of the first aspect, the first light-emitting element and the second light-emitting element do not overlap in a thickness direction of the display panel;

[0010] Preferably, the first light-emitting element comprises a first anode, a first light-emitting layer and a first cathode, the first anode is located on a side of the first light-emitting layer facing away from the first surface, and the first cathode is located on a side of the first light-emitting layer facing the first surface;

[0011] The second light-emitting element comprises a second anode, a second light-emitting layer and a second cathode, wherein the second anode is located on a side of the second light-emitting layer facing the second surface, and the second cathode is located on a side of the second light-emitting layer facing away from the second surface;

[0012] The first anode and the second anode are located in the same film layer and are spaced apart from each other, the first light-emitting layer and the second light-emitting layer are located in the same film layer and are spaced apart from each other, and the first cathode and the second cathode are located in the same film layer and are spaced apart from each other;

[0013] The first cathode and the second anode are transparent electrodes, and the first anode and the second cathode are opaque electrodes.

[0014] In a possible implementation of the first aspect, the first light-emitting element and the second light-emitting element do not overlap in a thickness direction of the display panel;

[0015] Preferably, the first light-emitting element comprises a first anode, a first light-emitting layer and a first cathode, the first anode is located on a side of the first light-emitting layer facing away from the first surface, and the first cathode is located on a side of the first light-emitting layer facing the first surface;

[0016] The second light-emitting element comprises a second anode, a second light-emitting layer and a second cathode, wherein the second anode is located on a side of the second light-emitting layer facing the second surface, and the second cathode is located on a side of the second light-emitting layer facing away from the second surface;

[0017] The first anode and the second anode are located in the same film layer and are connected to each other, the first light-emitting layer and the second light-emitting layer are located in the same film layer and are connected to each other, and the first cathode and the second cathode are located in the same film layer and are connected to each other;

[0018] The first cathode and the second anode are transparent electrodes, and the first anode and the second cathode are opaque electrodes.

[0019] In a possible implementation of the first aspect, the display panel also includes an array layer, the first light-emitting element and the second light-emitting element are located on the same side of the array layer, and the array layer includes a pixel circuit for driving the first light-emitting element and the second light-emitting element, and the array layer is transparent.

[0020] In a possible implementation of the first aspect, the display panel further includes a first pixel circuit and a second pixel circuit, the first pixel circuit is electrically connected to the first light-emitting element, the second pixel circuit is electrically connected to the second light-emitting element, the first pixel circuit and the second pixel circuit are electrically connected to the same data line through a multiplexing circuit, and the multiplexing circuit is used to write a data voltage on the data line into the first pixel circuit and the second pixel circuit in a time-sharing manner;

[0021] Preferably, the first pixel circuit includes a first driving module, the second pixel circuit includes a second driving module, and the first driving module and the second driving module are electrically connected to the power line through the same power writing module;

[0022] Preferably, the first data writing module of the first pixel circuit and the second data writing module of the second pixel circuit are electrically connected to different scan lines;

[0023] Preferably, the first functional module of the first pixel circuit and the second functional module of the second pixel circuit are electrically connected to the same gate control line, the first functional module and the second functional module have the same function, and the first functional module and the second functional module include any one of a gate reset module, an anode reset module, and a light emitting control module;

[0024] Preferably, at the same viewing angle, the display directions of the first image and the second image are opposite.

[0025] In a possible implementation of the first aspect, the display panel further includes a first pixel circuit and a second pixel circuit, the first pixel circuit is electrically connected to the first light-emitting element, and the second pixel circuit is electrically connected to the second light-emitting element;

[0026] The first pixel circuit is electrically connected to the first scan line, and a first effective pulse on the first scan line controls a data voltage to be written into a gate of a driving transistor in the first pixel circuit;

[0027] The second pixel circuit is electrically connected to the second scan line, and the second effective pulse on the second scan line controls the data voltage to be written into the gate of the driving transistor in the second pixel circuit;

[0028] The sum of the pulse widths of the first effective pulse and the second effective pulse is less than or equal to H, H=1 / (F×n), where F represents the data refresh frequency of the display panel, and n represents the total number of rows of light-emitting elements of the display panel;

[0029] Preferably, the pulse widths of the first effective pulse and the second effective pulse are equal;

[0030] Preferably, at the same viewing angle, the display directions of the first image and the second image are opposite.

[0031] In a possible implementation of the first aspect, the display panel further includes a pixel circuit, and the pixel circuit is electrically connected to both the first light-emitting element and the second light-emitting element;

[0032] Preferably, the pixel circuit includes a first driving transistor and a second driving transistor, the first driving transistor is electrically connected to the first light emitting element, and the second driving transistor is electrically connected to the second light emitting element.

[0033] In a possible implementation of the first aspect, the display panel includes a plurality of rows of first light-emitting elements and a plurality of rows of second light-emitting elements;

[0034] The display panel comprises a first edge and a second edge opposite to each other in a row direction, and in a direction from the first edge to the second edge, the first light emitting elements in the i-th row are arranged with a first first light emitting element to an m-th first light emitting element, and the second light emitting elements in the i-th row are arranged with a first second light emitting element to an m-th second light emitting element;

[0035] When displaying the first image and the second image, the data voltage connected to the kth first light-emitting element in the i-th row and the data voltage connected to the m-k+1th second light-emitting element in the i-th row are the same, i is a positive integer, m is an integer greater than 1, and k is any one from 1 to m.

[0036] Based on the same inventive concept, in a second aspect, an embodiment of the present application further provides a display device, comprising a display panel as described in any embodiment of the first aspect.

[0037] According to the display panel and display device provided by the embodiments of the present application, by providing a first light-emitting element and a second light-emitting element, the light emitted by the first light-emitting element forms a first image on the first surface, and the light emitted by the second light-emitting element forms a second image on the second surface, so that double-sided display of the display panel can be achieved. In addition, at least the wiring or structure of the display panel can be made of transparent materials, so that double-sided display and transparency can be taken into account.

[0038] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0040] Figure 1 A schematic diagram showing a cross-sectional structure of a display panel provided by an embodiment of the present application is shown;

[0041] Figure 2 Another schematic diagram of a cross-sectional structure of a display panel provided by an embodiment of the present application is shown;

[0042] Figure 3 A schematic diagram showing another cross-sectional structure of a display panel provided by an embodiment of the present application is shown;

[0043] Figure 4 A schematic diagram of a top view structure of a display panel provided by an embodiment of the present application is shown;

[0044] Figure 5 Another schematic diagram of a top view structure of a display panel provided by an embodiment of the present application is shown;

[0045] Figure 6 Another schematic diagram of a top view structure of a display panel provided by an embodiment of the present application is shown;

[0046] Figure 7 A schematic diagram showing another cross-sectional structure of a display panel provided by an embodiment of the present application is shown;

[0047] Figure 8 A schematic diagram showing a structure of a pixel circuit in a display panel provided by an embodiment of the present application is shown;

[0048] Fig. 9 Show Figure 8 A timing diagram of

[0049] Fig.10 Another structural schematic diagram of a pixel circuit in a display panel provided by an embodiment of the present application is shown;

[0050] Fig.11 Show Fig.10 A timing diagram of

[0051] Fig.12 Another structural schematic diagram of a pixel circuit in a display panel provided by an embodiment of the present application is shown;

[0052] Fig.13 Show Fig.12 A timing diagram of

[0053] Fig.14 Another structural schematic diagram of a pixel circuit in a display panel provided by an embodiment of the present application is shown;

[0054] Fig.15 A schematic diagram showing a display effect of a display panel in a comparative example is shown;

[0055] Fig.16 A schematic diagram of driving data of a display panel provided by an embodiment of the present application is shown;

[0056] Fig.17 Another driving data schematic diagram of a display panel provided by an embodiment of the present application is shown;

[0057] Fig.18 A schematic diagram showing a driving data of a display panel provided by an embodiment of the present application;

[0058] Fig.19 A schematic structural diagram of a display device provided by an embodiment of the present application is shown.

[0059] Description of reference numerals:

[0060] 100, display panel; S1, first surface; S2, second surface;

[0061] 1. A first light emitting element;

[0062] 11. first anode; 12. first light-emitting layer; 13. first cathode;

[0063] 2. A second light emitting element;

[0064] 21. second anode; 22. second light-emitting layer; 23. second cathode;

[0065] 3. Pixel circuit;

[0066] 31. A first pixel circuit; 32. A second pixel circuit;

[0067] 01. Light-emitting device layer; 02. Array layer

[0068] 4. Multiplexing circuit; 41. First transistor; 42. Second transistor;

[0069] 1000. Display device. DETAILED DESCRIPTION

[0070] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0071] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0072] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0073] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0074] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0075] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0076] Before describing the technical solutions provided by the embodiments of the present application, in order to facilitate the understanding of the embodiments of the present application, the present application first specifically describes the problems existing in the related art:

[0077] With the development of display technology, the functions of display panels are becoming more and more diversified. For example, transparent display technology has attracted the attention of those skilled in the art. Transparent display can realize display function while transmitting light.

[0078] However, the transparent display panel of the related art can only display images on one side and cannot achieve double-sided display.

[0079] In order to solve the above problems, embodiments of the present application provide a display panel and a display device. Various embodiments of the display panel and the display device will be described below in conjunction with the accompanying drawings.

[0080] Figure 1 A schematic diagram of a cross-sectional structure of a display panel provided by an embodiment of the present application is shown. Figure 2 Another schematic diagram of the cross-sectional structure of a display panel provided by an embodiment of the present application is shown. Figure 3 FIG. 2 shows another cross-sectional structure diagram of a display panel provided by an embodiment of the present application. Figures 1 to 3 As shown in any of the drawings, the display panel 100 provided in the embodiment of the present application includes a first light-emitting element 1 and a second light-emitting element 2. The light L1 emitted by the first light-emitting element 1 forms a first image on the first surface S1 of the display panel 100. The light L2 emitted by the second light-emitting element 2 forms a second image on the second surface S2 of the display panel 100. The first surface S1 and the second surface S2 of the display panel 100 are opposite. For example, the first surface S1 can be understood as the front side of the display panel 100, and the second surface S2 can be understood as the back side of the display panel 100.

[0081] The display panel 100 is a transparent display panel. For example, at least part of the wiring and at least part of the device structure of the display panel 100 can be made of transparent materials. For example, in a top view, the area between adjacent light emitting elements can be a transparent area.

[0082] For example, the first light emitting element 1 and the second light emitting element 2 may both be organic light emitting diodes (OLED). Of course, in the case of taking transparency into consideration, the first light emitting element 1 and the second light emitting element 2 may also be other types of light emitting elements.

[0083] In order to ensure the display effect of the two surfaces, the light emitted by the first light-emitting element 1 cannot be transmitted to the second surface S2, that is, the light emitted by the first light-emitting element 1 cannot form an image on the second surface S2. Similarly, the light emitted by the second light-emitting element 2 cannot be transmitted to the first surface S1, that is, the light emitted by the second light-emitting element 2 cannot form an image on the first surface S1. In this way, when the user faces the first surface S1, he can only see the first image formed by the light emitted by the first light-emitting element 1, and cannot see the image formed by the light emitted by the second light-emitting element 2 on the first surface S1; when the user faces the second surface S2, he can only see the second image formed by the light emitted by the second light-emitting element 2, and cannot see the image formed by the light emitted by the first light-emitting element 1 on the second surface S2.

[0084] According to the display panel provided by the embodiment of the present application, by providing a first light-emitting element and a second light-emitting element, the light emitted by the first light-emitting element forms a first image on the first surface, and the light emitted by the second light-emitting element forms a second image on the second surface, so that double-sided display of the display panel can be achieved. In addition, at least the wiring or structure of the display panel can be made of transparent materials, so that double-sided display and transparency can be taken into account.

[0085] The design structures of the first light emitting element 1 and the second light emitting element 2 are introduced below.

[0086] In some embodiments, Figure 1 As shown, the first light emitting element 1 and the second light emitting element 2 are stacked in the thickness direction Z of the display panel 100 , and the first light emitting element 1 is close to the first surface S1 , and the second light emitting element 2 is close to the second surface S2 .

[0087] Exemplarily, the first light-emitting element 1 may be a top-emitting light-emitting element, and the second light-emitting element 2 may be a bottom-emitting light-emitting element.

[0088] For example, in the thickness direction Z, the first light emitting element 1 and the second light emitting element 2 may completely overlap.

[0089] In the embodiment of the present application, since the first light-emitting element and the second light-emitting element are stacked, more first light-emitting elements and second light-emitting elements can be set when the size of the display panel is constant, so that a higher resolution can be achieved regardless of whether viewed from the first surface or the second surface.

[0090] In some embodiments, please refer to Figure 1 The first light-emitting element 1 includes a first anode 11, a first light-emitting layer 12 and a first cathode 13. The first anode 11 is located on the side of the first light-emitting layer 12 facing the first surface S1, and the first cathode 13 is located on the side of the first light-emitting layer 12 facing away from the first surface S1.

[0091] The second light emitting element 2 comprises a second anode 21 , a second light emitting layer 22 and a second cathode 23 . The second anode 21 is located on the side of the second light emitting layer 22 facing the second surface S2 , and the second cathode 23 is located on the side of the second light emitting layer 22 facing away from the second surface S2 .

[0092] The first cathode 13 and the second cathode 23 are the same cathode, that is, the first light-emitting element 1 and the second light-emitting element 2 share a cathode, and the cathodes of the two are common electrodes. The first anode 11 and the second anode 21 are both transparent electrodes. The light emitted by the first light-emitting layer 12 can pass through the first anode 11, and the light emitted by the second light-emitting layer 22 can pass through the second anode 21.

[0093] For example, in the thickness direction Z, the portion where the common cathode overlaps with the first light-emitting layer 12 and the second light-emitting layer 13 may be opaque, and the portion where the common cathode overlaps with the first light-emitting layer 12 and the second light-emitting layer 13 may be transparent.

[0094] A method of stacking the first light emitting element 1 and the second light emitting element 2 is described above. In other examples, the first light emitting element 1 and the second light emitting element 2 may also be non-stacked.

[0095] In some embodiments, Figure 2 As shown, the first light emitting element 1 and the second light emitting element 2 do not overlap in the thickness direction Z of the display panel 100. That is, in the thickness direction Z, the first light emitting element 1 and the second light emitting element 2 are staggered.

[0096] The light-emitting element generally includes a plurality of film layers stacked together. When the first light-emitting element and the second light-emitting element do not overlap in the thickness direction, at least part of the film layers of the first light-emitting element and the second light-emitting element may be arranged in the same layer. This is beneficial for reducing the overall thickness of the display panel, thereby achieving a thinner display panel.

[0097] In some embodiments, please refer to Figure 2 The first light-emitting element 1 includes a first anode 11, a first light-emitting layer 12 and a first cathode 13. The first anode 11 is located on the side of the first light-emitting layer 12 facing the first surface S1, and the first cathode 13 is located on the side of the first light-emitting layer 12 facing away from the first surface S1.

[0098] The second light emitting element 2 comprises a second anode 21 , a second light emitting layer 22 and a second cathode 23 . The second anode 21 is located on the side of the second light emitting layer 22 facing the second surface S2 , and the second cathode 23 is located on the side of the second light emitting layer 22 facing away from the second surface S2 .

[0099] The first anode 11 and the second anode 21 are located in the same film layer and are spaced apart from each other, and an insulating layer may be provided between the first anode 11 and the second anode 21. The first light-emitting layer 12 and the second light-emitting layer 22 are located in the same film layer and are spaced apart from each other, and an insulating layer may be provided between the first light-emitting layer 12 and the second light-emitting layer 22. The first cathode 13 and the second cathode 23 are located in the same film layer and are spaced apart from each other, and an insulating layer may be provided between the first cathode 13 and the second cathode 23.

[0100] It is understandable that the first anode 11 and the second anode 21 are independent of each other, the first light-emitting layer 12 and the second light-emitting layer 22 are independent of each other, and the first cathode 13 and the second cathode 23 are independent of each other. The first light-emitting element 1 and the second light-emitting element 2 can be driven separately, and the first light-emitting element 1 and the second light-emitting element 2 can display different brightness.

[0101] Furthermore, the first cathode 13 and the second anode 21 are transparent electrodes, and the first anode 11 and the second cathode 23 are opaque electrodes.

[0102] The light emitted by the first light emitting element 1 can be transmitted to the first surface S1 through the first cathode 13 , and cannot pass through the first anode 11 , so the light emitted by the first light emitting element 1 cannot be transmitted to the second surface S2 .

[0103] The light emitted by the second light emitting element 2 can be transmitted to the second surface S2 through the second anode 21 , and cannot pass through the second cathode 23 , so the light emitted by the second light emitting element 2 cannot be transmitted to the first surface S1 .

[0104] In addition, the first anode 11 and the second anode 21 are located in the same film layer, which can facilitate the connection between the first anode 11 and the second anode 21 and the pixel circuit.

[0105] Figure 2 This is one example of a non-stacked arrangement of the first light emitting element 1 and the second light emitting element 2. Figure 3 The first light-emitting element 1 and the second light-emitting element 2 are arranged without being stacked.

[0106] like Figure 3 As shown, the first light emitting element 1 and the second light emitting element 2 do not overlap in the thickness direction Z of the display panel 100. That is, in the thickness direction Z, the first light emitting element 1 and the second light emitting element 2 are staggered. It can be understood that Figure 3 The structure shown can also help reduce the overall thickness of the display panel and achieve a thinner display panel.

[0107] In some embodiments, please refer to Figure 3The first light-emitting element 1 includes a first anode 11, a first light-emitting layer 12 and a first cathode 13. The first anode 11 is located on the side of the first light-emitting layer 12 facing the first surface S1, and the first cathode 13 is located on the side of the first light-emitting layer 12 facing away from the first surface S1.

[0108] The second light emitting element 2 comprises a second anode 21 , a second light emitting layer 22 and a second cathode 23 . The second anode 21 is located on the side of the second light emitting layer 22 facing the second surface S2 , and the second cathode 23 is located on the side of the second light emitting layer 22 facing away from the second surface S2 .

[0109] The first anode 11 and the second anode 21 are located in the same film layer and are connected to each other, and there may be no gap between the first anode 11 and the second anode 21. The first light-emitting layer 12 and the second light-emitting layer 22 are located in the same film layer and are connected to each other, and there may be no gap between the first light-emitting layer 12 and the second light-emitting layer 22. The first cathode 13 and the second cathode 23 are located in the same film layer and are connected to each other, and there may be no gap between the first cathode 13 and the second cathode 23.

[0110] It is understandable that the signals on the first anode 11 and the second anode 21 are the same, the first light-emitting layer 12 and the second light-emitting layer 22 are not independent, and the signals on the first cathode 13 and the second cathode 23 are the same. The first light-emitting element 1 and the second light-emitting element 2 cannot be driven separately, and the first light-emitting element 1 and the second light-emitting element 2 have the same light-emitting brightness.

[0111] Furthermore, the first cathode 13 and the second anode 21 are transparent electrodes, and the first anode 11 and the second cathode 23 are opaque electrodes.

[0112] The light emitted by the first light emitting element 1 can be transmitted to the first surface S1 through the first cathode 13 , and cannot pass through the first anode 11 , so the light emitted by the first light emitting element 1 cannot be transmitted to the second surface S2 .

[0113] The light emitted by the second light emitting element 2 can be transmitted to the second surface S2 through the second anode 21 , and cannot pass through the second cathode 23 , so the light emitted by the second light emitting element 2 cannot be transmitted to the first surface S1 .

[0114] In addition, the first anode 11 and the second anode 21 are located in the same film layer, which can facilitate the connection between the first anode 11 and the second anode 21 and the pixel circuit.

[0115] Figure 4 The example shown is equivalent to dividing a light-emitting element into two parts, one part of which serves as a first light-emitting element and the other part serves as a second light-emitting element.

[0116] based on Figure 2and Figure 3 The structure of the light emitting element shown in FIG. Figures 4 to 6 The first light emitting element and the second light emitting element are arranged.

[0117] As an example, Figure 4 As shown, in the first direction X, a column of first light emitting elements 1 and a column of second light emitting elements 2 are alternately arranged.

[0118] As another example, Figure 5 As shown, in the second direction Y, a row of first light emitting elements 1 and a row of second light emitting elements 2 are alternately arranged.

[0119] The first direction X intersects with the second direction Y. For example, the first direction X is a row direction, and the second direction Y is a column direction. The row direction and the column direction can be interchanged.

[0120] As another example, Figure 6 As shown, the first light emitting elements 1 and the second light emitting elements 2 are arranged alternately in the first direction X and the second direction Y. That is, the first light emitting elements and the second light emitting elements in the same row are arranged alternately, and the first light emitting elements and the second light emitting elements in the same column are arranged alternately.

[0121] It should be noted that Figures 4 to 6 These are just some examples and are not intended to limit the present application.

[0122] Figure 7 Another schematic diagram of a cross-sectional structure of a display panel provided by an embodiment of the present application is shown. In some embodiments, the light-emitting element of the display panel is disposed in the light-emitting device layer 01. The display panel 100 further includes an array layer 02. In the thickness direction Z, the light-emitting device layer 01 is located on one side of the array layer 02, that is, the first light-emitting element and the second light-emitting element are located on the same side of the array layer 02. The array layer 02 may include a pixel circuit ( Figure 7 ), the array layer 02 is transparent.

[0123] The pixel circuit of the array layer 02 is connected to the anode of the light emitting element. The wiring in the array layer can be a transparent wiring.

[0124] In the embodiment of the present application, the pixel circuits of the first light emitting element and the second light emitting element are both arranged in the array layer, so that only one array layer is used, which is beneficial to reducing the overall thickness of the display panel.

[0125] Understandably, Figure 1 and Figure 2 In the structure shown, the first light emitting element and the second light emitting element are two independent light emitting elements and can be driven separately. Figure 3In the structure shown, the first light-emitting element and the second light-emitting element are actually two parts of one light-emitting element and cannot be driven separately.

[0126] For example, for Figure 1 and Figure 2 In the structure shown, pixel circuits may be provided to drive the first light emitting element and the second light emitting element respectively.

[0127] In some embodiments, Figure 8 As shown, the display panel further includes a first pixel circuit 31 and a second pixel circuit 32, wherein the first pixel circuit 31 is electrically connected to the first light emitting element 1, and the second pixel circuit 32 is electrically connected to the second light emitting element 2. The first pixel circuit 31 is used to drive the first light emitting element 1 to emit light, and the second pixel circuit 32 is used to drive the second light emitting element 2 to emit light.

[0128] The first pixel circuit 31 and the second pixel circuit 32 may receive a data signal from the data line and generate a driving current according to the data signal.

[0129] Exemplarily, the first pixel circuit 31 and the second pixel circuit 32 may be electrically connected to the same data line Data via a multiplexing circuit 4 , and the multiplexing circuit 4 is used to write the data voltage on the data line Data into the first pixel circuit 31 and the second pixel circuit 32 in a time-sharing manner.

[0130] Exemplarily, the multiplexing circuit 4 may include a first transistor 41 and a second transistor 42 , the first pixel circuit 31 is electrically connected to the data line Data through the first transistor 41 , and the second pixel circuit 32 is electrically connected to the data line Data through the second transistor 42 .

[0131] For ease of description, the connection line between the first pixel circuit 31 and the first transistor 41 is recorded as Data1, and the connection line between the second pixel circuit 32 and the second transistor 42 is recorded as Data2. The first transistor 41 and the second transistor 42 can be turned on successively, such as Fig. 9 As shown, the data voltage from the same data line Data can be written to the connection line Data1 and the connection line Data2 successively. In the same frame, according to actual needs, it can be set that the data voltage written to the connection line Data1 and the connection line Data2 are different.

[0132] In the embodiment of the present application, by setting a multiplexing circuit, the first pixel circuit and the second pixel circuit share a data line, which can reduce the number of data lines. In addition, the first light-emitting element and the second light-emitting element are driven by different pixel circuits respectively, which can be flexibly driven according to different brightness requirements.

[0133] Fig.10Another structural schematic diagram of a pixel circuit in a display panel provided by an embodiment of the present application is shown. Specifically, Fig.10 is a specific circuit structure of the first pixel circuit 31 and the second pixel circuit 32. Fig.10 As shown, the first pixel circuit includes a first driving module, the second pixel circuit includes a second driving module, and the first driving module and the second driving module are electrically connected to the power line through the same power writing module. Fig.10 In the figure, the first driving module includes a driving transistor T1, the second driving module includes a driving transistor T1', and the power writing module includes a transistor T2. The driving transistor T1 and the driving transistor T1' are electrically connected to the power line VDD through the transistor T2. In other words, the first pixel circuit and the second pixel circuit share the power writing module. By sharing the functional module, the circuit structure can be simplified, which is conducive to achieving high resolution.

[0134] Exemplarily, the first data writing module of the first pixel circuit and the second data writing module of the second pixel circuit are electrically connected to different scan lines.

[0135] like Fig.10 As shown, the first data writing module includes a transistor T4, a first electrode of the transistor T4 is electrically connected to the connection line Data1, a second electrode of the transistor T4 is electrically connected to the first electrode of the driving transistor T1, and a gate of the transistor T4 is electrically connected to the scanning line S2.

[0136] The second data writing module includes a transistor T4 ′, a first electrode of the transistor T4 ′ is electrically connected to the connection line Data2 , a second electrode of the transistor T4 ′ is electrically connected to the first electrode of the driving transistor T1 ′, and a gate of the transistor T4 ′ is electrically connected to the scanning line S2 ′.

[0137] Exemplarily, the first threshold compensation module of the first pixel circuit includes transistor T5, and the gates of transistor T5 and transistor T4 are both electrically connected to the scan line S2. The second threshold compensation module of the second pixel circuit includes transistor T5', and the gates of transistor T5' and transistor T4' are both electrically connected to the scan line S2'.

[0138] Scan line S2 and scan line S2' are different scan lines, and their timings are different. Fig.11 As shown, the scanning line S2 and the scanning line S2' can be at the on level at different times, wherein: Fig.11 In the figure, the on-level is indicated as a low level.

[0139] As introduced above, the data voltage from the same data line Data can be written successively to the connecting line Data1 and the connecting line Data2. In the embodiment of the present application, the first data writing module and the second data writing module are electrically connected to different scanning lines, which can avoid the data voltage on the connecting line Data1 from being mistakenly written into the second pixel circuit and avoid the data voltage on the connecting line Data2 from being mistakenly written into the first pixel circuit.

[0140] Exemplarily, the first functional module of the first pixel circuit and the second functional module of the second pixel circuit are electrically connected to the same gate control line, the first functional module and the second functional module have the same functions, and the first functional module and the second functional module include any one of a gate reset module, an anode reset module, and a light emitting control module.

[0141] For example, Fig.10 As shown, the gate reset module of the first pixel circuit includes a transistor T6, the gate reset module of the second pixel circuit includes a transistor T6', and the gates of both transistors T6 and T6' can be electrically connected to the scan line S1. The anode reset module of the first pixel circuit includes a transistor T7, the anode reset module of the second pixel circuit includes a transistor T7', and the gates of both transistors T7 and T7' can be electrically connected to the scan line S3. The light emission control module of the first pixel circuit includes a transistor T3, and the light emission control module of the second pixel circuit includes a transistor T3', and the gates of both transistors T3 and T3' can be electrically connected to the light emission control line EM.

[0142] As an example, the timing of the scanning lines S1, S2, S2' and the light emitting control line EM is as follows: Fig.11 shown. Fig.10 Each transistor is a P-type transistor. Fig.11 The conduction level is shown as a low level. The operation process of the first pixel circuit and the second pixel circuit can be as follows:

[0143] In the C1 phase, the scanning line S1 is at the on level, the transistors T6 and T6 ′ are turned on, and the reset signal Ref is written into the gate of the driving transistor T1 and the gate of the driving transistor T1 ′ respectively.

[0144] In the C2 phase, the scanning line S2 is first at the on level, transistors T4 and T5 are first turned on, and the data voltage on the connection line Data1 is written into the gate of the driving transistor T1. Then, the scanning line S2' is at the on level, transistors T4' and T5' are turned on, and the data voltage on the connection line Data2 is written into the gate of the driving transistor T1'.

[0145] In the C3 phase, the scanning line S3 is at the on level, the transistors T7 and T7 ′ are turned on, and the reset signal Ref is written into the anode of the first light emitting element 1 and the anode of the second light emitting element 2 respectively.

[0146] In phase C4, the light emitting control line EM is at the on level, transistors T2, T3, and T3' are turned on, driving transistor T1 generates a driving current and drives the first light emitting element 1 to emit light, and driving transistor T1' generates a driving current and drives the second light emitting element 2 to emit light.

[0147] It should be noted that Figure 8 The circuit structure shown is universal. Fig.10 This is just one example and is not intended to limit the present application.

[0148] In other embodiments, Fig.12 The structure shown in the figure is designed with a first light emitting element and a second light emitting element. Fig.12 As shown, the display panel further includes a first pixel circuit 31 and a second pixel circuit 32, wherein the first pixel circuit 31 is electrically connected to the first light emitting element 1, and the second pixel circuit 32 is electrically connected to the second light emitting element 2. The first pixel circuit 31 is used to drive the first light emitting element 1 to emit light, and the second pixel circuit 32 is used to drive the second light emitting element 2 to emit light.

[0149] The first pixel circuit 31 is electrically connected to the first scan line Scan, and the first effective pulse control data voltage on the first scan line Scan is written into the gate of the driving transistor T1 in the first pixel circuit 31. The second pixel circuit 32 is electrically connected to the second scan line Scan', and the second effective pulse control data voltage on the second scan line Scan' is written into the gate of the driving transistor T1' in the second pixel circuit 32.

[0150] In this example, the first pixel circuit 31 and the second pixel circuit 32 may not share transistors, and the two may be independent of each other.

[0151] For example, the first pixel circuit 31 is electrically connected to the connection line Data1, and the second pixel circuit 32 is electrically connected to the connection line Data2. Here, the connection line Data1 and the connection line Data2 may be two different data lines, or the connection line Data1 and the connection line Data2 may be electrically connected to the same data line.

[0152] The first valid pulse on the first scan line Scan and the second valid pulse on the second scan line Scan' are both low level indications. When the first scan line Scan is at a low level, the data voltage of the connecting line Data1 can be written into the gate of the driving transistor of the first pixel circuit. When the second scan line Scan' is at a low level, the data voltage of the connecting line Data2 can be written into the gate of the driving transistor of the second pixel circuit.

[0153] The sum of the pulse widths of the first effective pulse and the second effective pulse is less than or equal to the row scanning time H, H=1 / (F×n), where F represents the data refresh frequency of the display panel and n represents the total number of rows of light-emitting elements of the display panel.

[0154] In the embodiment of the present application, it is equivalent to completing the scanning of two rows of pixel circuits within one row scanning time H. In this way, by changing the timing of the scanning signal, double-sided driving can be achieved.

[0155] Exemplarily, the pulse widths of the first effective pulse and the second effective pulse are equal, that is, the scanning time occupied by the first pixel circuit and the second pixel circuit is equal, which can improve the uniformity of double-sided driving.

[0156] In some further embodiments, Figures 1 to 3 In the structure shown, the first light-emitting element and the second light-emitting element can share the same pixel circuit for driving.

[0157] For example, Fig.14 As shown, the display panel further includes a pixel circuit 3, and the pixel circuit 3 is electrically connected to both the first light emitting element 1 and the second light emitting element 2. The pixel circuit 3 is used to drive the first light emitting element 1 and the second light emitting element 2 to emit light.

[0158] In the embodiment of the present application, the first light-emitting element and the second light-emitting element share the same pixel circuit for driving, which can reduce the total number of pixel circuits and is conducive to achieving high resolution.

[0159] Exemplarily, the pixel circuit 3 may include a first driving transistor T1 and a second driving transistor T1', the first driving transistor T1 is electrically connected to the first light emitting element 1, and the second driving transistor T1' is electrically connected to the second light emitting element 2. In this case, different driving transistors may be used to drive the first light emitting element and the second light emitting element respectively. It is understandable that for Figure 3 In the structure shown, the first light-emitting element and the second light-emitting element belong to different parts of the same light-emitting element, and are essentially one light-emitting element, which can be driven by only one pixel circuit.

[0160] Understandably, based on Figure 1 and Figure 2 The structure of the light emitting element shown in FIG. Figures 8 to 13 The pixel circuit structure and its timing shown can achieve: at the same viewing angle, the display directions of the first image on the first surface and the second image on the second surface are opposite; however, for the viewer, the image seen by the viewer on the front side of the display panel and the image seen by the viewer on the back side of the display panel are both positive, and the back side image is no longer a mirror image of the front side image.

[0161] For ease of understanding, as a comparison, Fig.15 As shown, image a represents the image seen by the viewer on the front side of the display panel, and image b represents the image seen by the viewer on the back side of the display panel. The image seen on the back side of the display panel has a reverse display direction, that is, the image seen on the back side is a mirror image of the front image, which affects the viewer's perception on the back side.

[0162] The embodiment of the present application can achieve that the display directions of the first image on the first surface and the second image on the second surface are opposite, so that the viewer's perception will not be affected when viewing from the front or back.

[0163] In some embodiments, the data voltages connected to the first light-emitting element and the second light-emitting element can be designed so that the first image on the first surface and the second image on the second surface are displayed in opposite directions.

[0164] Exemplarily, the display panel includes multiple rows of first light-emitting elements and multiple rows of second light-emitting elements; the display panel includes a first edge and a second edge opposite to each other in the row direction, and in the direction from the first edge to the second edge, the first light-emitting elements in the i-th row are arranged with the first first light-emitting element to the m-th first light-emitting element, and the second light-emitting elements in the i-th row are arranged with the first second light-emitting element to the m-th second light-emitting element; when displaying the first image and the second image, the data voltage connected to the k-th first light-emitting element in the i-th row of the first light-emitting elements is the same as the data voltage connected to the m-k+1-th second light-emitting element in the i-th row of the second light-emitting elements, where i is a positive integer, m is an integer greater than 1, and k is any one from 1 to m.

[0165] For easier understanding, please refer to Figures 16 to 18 Any of the attached drawings, such as Fig.16 As shown, 4 rows of first light-emitting elements and 4 rows of second light-emitting elements are shown, and each row is arranged with 6 light-emitting elements as an example. The first direction X is the row direction, and the first edge a1 and the second edge a2 are opposite in the first direction X. For the first light-emitting elements in the first row, in the direction from the first edge a1 to the second edge a2, the data voltages connected to the 6 first light-emitting elements are data voltages 11 to 16 respectively. For the second light-emitting elements in the first row, in the direction from the first edge a1 to the second edge a2, the data voltages connected to the 6 second light-emitting elements are data voltages 16 to 11 respectively.

[0166] It should be noted that Fig.16The numerical values ​​(such as 11 to 16 and other numerical values) are not used to limit the size of the data voltage, but are used to indicate the data voltages connected to different light-emitting elements in the same row. In addition, in the figure, the same numerical values ​​for the first light-emitting element in the i-th row and the second light-emitting element in the i-th row indicate that the data voltages connected to the two light-emitting elements are the same. For example, the data voltage 11 connected to the first light-emitting element in the first row is the same as the data voltage 11 connected to the second light-emitting element in the first row; the data voltage 12 connected to the first light-emitting element in the first row is the same as the data voltage 12 connected to the second light-emitting element in the first row. Similarly, the data voltage 16 connected to the first light-emitting element in the first row is the same as the data voltage 16 connected to the second light-emitting element in the first row.

[0167] Understandably, Fig.16 For the first light-emitting element in the first row, the data voltage connected to it can be understood as the forward data voltage. For the second light-emitting element in the first row, the data voltage connected to it can be understood as the data voltage of the first light-emitting element in the first row after forward inversion.

[0168] Fig.16 The same is true for the first light emitting element in the second row and the second light emitting element in the second row, as well as the first light emitting elements and the second light emitting elements in other rows, which will not be described one by one here.

[0169] The data voltage driving method of the present application has universal applicability and can be applied to a variety of pixel arrangements.

[0170] As an example, Fig.17 As shown, the pixel arrangement is RGB arrangement. Fig.17 Here, R represents a red sub-pixel, G represents a green sub-pixel, and B represents a blue sub-pixel. Fig.17 3 rows of first light-emitting elements and 3 rows of second light-emitting elements are shown, and each row is arranged with 5 RGB light-emitting elements as an example. The first direction X is the row direction, and the first edge a1 and the second edge a2 are opposite in the first direction X. For the first light-emitting elements in the first row, in the direction from the first edge a1 to the second edge a2, the data voltages connected to the 5 red first light-emitting elements are respectively data voltages R11 to R15, the data voltages connected to the 5 green first light-emitting elements are respectively data voltages G11 to G15, and the data voltages connected to the 5 blue first light-emitting elements are respectively data voltages B11 to B15. For the second light-emitting elements in the first row, in the direction from the first edge a1 to the second edge a2, the data voltages connected to the 5 red second light-emitting elements are respectively data voltages R15 to R11, the data voltages connected to the 5 green second light-emitting elements are respectively data voltages G15 to G11, and the data voltages connected to the 5 blue second light-emitting elements are respectively data voltages B15 to B11.

[0171] It should be noted that, similarly, Fig.17 The values ​​in (such as R11 to R15 and other values) are not used to limit the size of the data voltage, but are used to indicate the data voltages connected to different light-emitting elements in the same row. In addition, in the figure, the same values ​​for the first light-emitting element in the i-th row and the second light-emitting element in the i-th row indicate that the data voltages connected to the two light-emitting elements are the same. For example, the data voltage R11 connected to the first light-emitting element in the first row is the same as the data voltage R11 connected to the second light-emitting element in the first row; the data voltage R12 connected to the first light-emitting element in the first row is the same as the data voltage R12 connected to the second light-emitting element in the first row. Similarly, the data voltage R16 connected to the first light-emitting element in the first row is the same as the data voltage R16 connected to the second light-emitting element in the first row. The same applies to other colors.

[0172] Understandably, Fig.17 For the first light-emitting element in the first row, the data voltage connected to it can be understood as the forward data voltage. For the second light-emitting element in the first row, the data voltage connected to it can be understood as the data voltage of the first light-emitting element in the first row after forward inversion.

[0173] Fig.17 The same is true for the first light emitting element in the second row and the second light emitting element in the second row, as well as the first light emitting elements and the second light emitting elements in other rows, which will not be described one by one here.

[0174] As another example, Fig.18 As shown, the pixel arrangement is similar to a diamond structure. Fig.18 Here, R represents a red sub-pixel, G represents a green sub-pixel, and B represents a blue sub-pixel. Fig.18Two rows of first light-emitting elements and two rows of second light-emitting elements are shown, and each row is arranged by three RB light-emitting elements and six G light-emitting elements. The first direction X is the row direction, and the first edge a1 and the second edge a2 are opposite in the first direction X. For the first light-emitting elements in the first row, in the direction from the first edge a1 to the second edge a2, the data voltages connected to the three red first light-emitting elements are respectively data voltages R11 to R13, and the data voltages connected to the six green first light-emitting elements are respectively data voltages G11 to G13, wherein the data voltages connected to every two green light-emitting elements are the same, for example, the first two are connected to G11, the middle two are connected to G12, and the last two are connected to G13, and the data voltages connected to the three blue first light-emitting elements are respectively data voltages B11 to B13. For the second light-emitting elements in the first row, in the direction from the first edge a1 to the second edge a2, the data voltages connected to the three red second light-emitting elements are data voltages R13 to R11, the data voltages connected to the six green second light-emitting elements are data voltages G13 to G11, and the data voltages connected to the three blue second light-emitting elements are data voltages B13 to B11.

[0175] It should be noted that, similarly, Fig.18 The values ​​in (such as R11 to R13 and other values) are not used to limit the size of the data voltage, but are used to indicate the data voltages connected to different light-emitting elements in the same row. In addition, in the figure, the same values ​​for the first light-emitting element in the i-th row and the second light-emitting element in the i-th row indicate that the data voltages connected to the two light-emitting elements are the same. For example, the data voltage R11 connected to the first light-emitting element in the first row is the same as the data voltage R11 connected to the second light-emitting element in the first row; the data voltage R12 connected to the first light-emitting element in the first row is the same as the data voltage R12 connected to the second light-emitting element in the first row. Similarly, the data voltage R13 connected to the first light-emitting element in the first row is the same as the data voltage R13 connected to the second light-emitting element in the first row. The same applies to other colors.

[0176] Understandably, Fig.18 For the first light-emitting element in the first row, the data voltage connected to it can be understood as the forward data voltage. For the second light-emitting element in the first row, the data voltage connected to it can be understood as the data voltage of the first light-emitting element in the first row after forward inversion.

[0177] Fig.18 The same is true for the first light emitting element in the second row and the second light emitting element in the second row, as well as the first light emitting elements and the second light emitting elements in other rows, which will not be described one by one here.

[0178] For example, according to Figures 16 to 18The driving data shown can realize that the display directions of the first image on the first surface and the second image on the second surface are opposite, that is, for the viewer, the first image seen on the front side and the second image seen on the back side are both positive.

[0179] It should be noted that Figures 16 to 18 It is used to indicate the corresponding relationship between the data voltages connected to the first light-emitting element and the second light-emitting element, and is not used to limit the relative position relationship between the first light-emitting element and the second light-emitting element. Figure 1 The structure shown in the figure can be stacked or set up according to Figure 2 The structures shown have no overlapping arrangement.

[0180] It should also be noted that the transistor in the embodiment of the present application can be an N-type transistor or a P-type transistor. For an N-type transistor, the on-level is a high level and the off-level is a low level. That is, when the gate potential of the N-type transistor is a high level, the first pole and the second pole are connected, and when the gate potential of the N-type transistor is a low level, the first pole and the second pole are disconnected. For a P-type transistor, the on-level is a low level and the off-level is a high level. That is, when the gate potential of the P-type transistor is a low level, the first pole and the second pole are connected, and when the gate potential of the P-type transistor is a high level, the first pole and the second pole are disconnected.

[0181] In a specific implementation, the gate of each of the above-mentioned transistors serves as its control electrode, and, according to the signal of the gate of each transistor and its type, its first electrode can be used as the source and the second electrode as the drain, or its first electrode can be used as the drain and the second electrode as the source, without making any distinction here. In addition, the on-level and off-level in the embodiments of the present application are general terms, the on-level refers to any level that can turn on the transistor, and the off-level refers to any level that can turn off / shut down the transistor.

[0182] Based on the same inventive concept, the present application also provides a display device, including the display panel provided by the present application. Fig.19 , Fig.19 It is a structural schematic diagram of a display device provided in an embodiment of the present application. Fig.19 The provided display device 1000 includes the display panel 100 provided by any of the above embodiments of the present application. Fig.19The embodiment only takes the display screen set on the vehicle window as an example to illustrate the display device 1000. It can be understood that the display device provided in the embodiment of the present application, and other display devices with display functions such as computers and televisions, are not specifically limited in this application. The display device provided in the embodiment of the present application has the beneficial effects of the display panel provided in the embodiment of the present application. For details, please refer to the specific description of the display panel in the above embodiments, and this embodiment will not be repeated here.

[0183] According to the embodiments described above in the present application, these embodiments do not describe all the details in detail, nor do they limit the present application to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: a first light emitting element, wherein light emitted by the first light emitting element forms a first image on a first surface of the display panel; A second light emitting element, wherein light emitted by the second light emitting element forms a second image on a second surface of the display panel, and the first surface is opposite to the second surface.

2. The display panel according to claim 1, characterized in that: The first light emitting element and the second light emitting element are stacked in a thickness direction of the display panel, and the first light emitting element is close to the first surface, and the second light emitting element is close to the second surface; Preferably, the first light-emitting element comprises a first anode, a first light-emitting layer and a first cathode, wherein the first anode is located on a side of the first light-emitting layer facing the first surface, and the first cathode is located on a side of the first light-emitting layer facing away from the first surface; The second light-emitting element includes a second anode, a second light-emitting layer and a second cathode, the second anode is located on the side of the second light-emitting layer facing the second surface, and the second cathode is located on the side of the second light-emitting layer facing away from the second surface; the first cathode and the second cathode are the same cathode, and the first anode and the second anode are both transparent electrodes.

3. The display panel according to claim 1, characterized in that: The first light emitting element and the second light emitting element do not overlap in the thickness direction of the display panel; Preferably, the first light-emitting element comprises a first anode, a first light-emitting layer and a first cathode, wherein the first anode is located on a side of the first light-emitting layer facing away from the first surface, and the first cathode is located on a side of the first light-emitting layer facing the first surface; The second light-emitting element comprises a second anode, a second light-emitting layer and a second cathode, the second anode is located on a side of the second light-emitting layer facing the second surface, and the second cathode is located on a side of the second light-emitting layer facing away from the second surface; The first anode and the second anode are located in the same film layer and are spaced apart from each other, the first light-emitting layer and the second light-emitting layer are located in the same film layer and are spaced apart from each other, and the first cathode and the second cathode are located in the same film layer and are spaced apart from each other; The first cathode and the second anode are transparent electrodes, and the first anode and the second cathode are opaque electrodes.

4. The display panel according to claim 1, characterized in that: The first light emitting element and the second light emitting element do not overlap in the thickness direction of the display panel; Preferably, the first light-emitting element comprises a first anode, a first light-emitting layer and a first cathode, wherein the first anode is located on a side of the first light-emitting layer facing away from the first surface, and the first cathode is located on a side of the first light-emitting layer facing the first surface; The second light-emitting element comprises a second anode, a second light-emitting layer and a second cathode, the second anode is located on a side of the second light-emitting layer facing the second surface, and the second cathode is located on a side of the second light-emitting layer facing away from the second surface; The first anode and the second anode are located in the same film layer and are connected to each other, the first light-emitting layer and the second light-emitting layer are located in the same film layer and are connected to each other, and the first cathode and the second cathode are located in the same film layer and are connected to each other; The first cathode and the second anode are transparent electrodes, and the first anode and the second cathode are opaque electrodes.

5. The display panel according to any one of claims 1 to 4, characterized in that: The display panel further includes an array layer, the first light emitting element and the second light emitting element are located on the same side of the array layer, and the array layer includes a pixel circuit for driving the first light emitting element and the second light emitting element, and the array layer is transparent.

6. The display panel according to any one of claims 1 to 3, characterized in that: The display panel further includes a first pixel circuit and a second pixel circuit, the first pixel circuit is electrically connected to the first light emitting element, the second pixel circuit is electrically connected to the second light emitting element, the first pixel circuit and the second pixel circuit are electrically connected to the same data line through a multiplexing circuit, and the multiplexing circuit is used to write the data voltage on the data line into the first pixel circuit and the second pixel circuit in a time-sharing manner; Preferably, the first pixel circuit includes a first driving module, the second pixel circuit includes a second driving module, and the first driving module and the second driving module are electrically connected to a power line through the same power writing module; Preferably, the first data writing module of the first pixel circuit and the second data writing module of the second pixel circuit are electrically connected to different scan lines; Preferably, the first functional module of the first pixel circuit and the second functional module of the second pixel circuit are electrically connected to the same gate control line, the first functional module and the second functional module have the same function, and the first functional module and the second functional module include any one of a gate reset module, an anode reset module, and a light emitting control module; Preferably, at the same viewing angle, the first image and the second image are displayed in opposite directions.

7. The display panel according to any one of claims 1 to 3, characterized in that: The display panel further includes a first pixel circuit and a second pixel circuit, the first pixel circuit is electrically connected to the first light emitting element, and the second pixel circuit is electrically connected to the second light emitting element; The first pixel circuit is electrically connected to a first scan line, and a first effective pulse control data voltage on the first scan line is written into a gate of a driving transistor in the first pixel circuit; The second pixel circuit is electrically connected to the second scan line, and a second effective pulse on the second scan line controls a data voltage to be written into a gate of a driving transistor in the second pixel circuit; The sum of the pulse widths of the first effective pulse and the second effective pulse is less than or equal to H, H=1 / (F×n), where F represents the data refresh frequency of the display panel, and n represents the total number of rows of light-emitting elements of the display panel; Preferably, the pulse widths of the first effective pulse and the second effective pulse are equal; Preferably, at the same viewing angle, the first image and the second image are displayed in opposite directions.

8. The display panel according to any one of claims 1 to 3, characterized in that: The display panel further includes a pixel circuit, wherein the pixel circuit is electrically connected to both the first light emitting element and the second light emitting element; Preferably, the pixel circuit includes a first driving transistor and a second driving transistor, the first driving transistor is electrically connected to the first light emitting element, and the second driving transistor is electrically connected to the second light emitting element.

9. The display panel according to any one of claims 1 to 3, characterized in that: The display panel includes a plurality of rows of the first light emitting elements and a plurality of rows of the second light emitting elements; The display panel comprises a first edge and a second edge opposite to each other in a row direction, and in a direction from the first edge to the second edge, the first light emitting elements in the i-th row are arranged from the first first light emitting element to the m-th first light emitting element, and the second light emitting elements in the i-th row are arranged from the first second light emitting element to the m-th second light emitting element; When displaying the first image and the second image, the data voltage connected to the kth first light-emitting element in the i-th row and the data voltage connected to the m-k+1th second light-emitting element in the i-th row are the same, i is a positive integer, m is an integer greater than 1, and k is any one from 1 to m.

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

Images