A display panel and an electronic device

Abstract

Embodiments of the present disclosure provide a display panel and an electronic device. The display panel includes: a substrate, a first display surface, and a second display surface. The first display surface is disposed on a first surface of the substrate, and the second display surface is disposed on a second surface of the substrate. A plurality of first display pixels are disposed on the first display surface, and a plurality of second display pixels are disposed on the second display surface. The first display pixels and the second display pixels are connected through a conductive layer. The conductive layer penetrates through a through hole formed in the substrate, and the through hole corresponds to one first display pixel and one second display pixel. Wherein, the conductive layer includes a first electron conductive layer and a second electron conductive layer. The first electron conductive layer is connected to the first display pixel, and the second electron conductive layer is connected to the second display pixel. Embodiments of the present disclosure reduce the volume of the display panel, enabling the display panel capable of dual-sided display to have advantages such as a smaller volume and a smaller weight, which is beneficial for portability and convenient use.

Description

Technical Field

[0001] The present disclosure relates to the field of displays, and particularly to a display panel and an electronic device. Background Art

[0002] AMOLED display panels are widely used in current display and lighting fields due to their characteristics such as wide color gamut, low power consumption, rollability, and thin and light structure, and there is a trend to completely replace LCDs; in order to conform to the trend of diversified display functions, there are currently many double-sided display devices. Double-sided display has many advantages and more usage scenarios. For example, when using a double-sided display device as a TV signal receiving device at home, the double-sided display can be embedded in the door frame or partition wall of an adjacent room to achieve the purpose of obtaining different information or the same information in different rooms simultaneously.

[0003] Currently, the main method to achieve double-sided display is to bond two single-sided display panels. Its cross-sectional structure is schematically shown as Figure 1 shown. Such a solution generally causes problems such as large volume, thick thickness, heavy weight, etc., and is not very portable. Summary of the Invention

[0004] In view of this, embodiments of the present disclosure propose a display panel and an electronic device to solve the following problems in the prior art: The existing double-sided display device bonds two single-sided display panels, and such a double-sided display device has a large volume, is relatively thick, is relatively heavy, and is not very portable.

[0005] On the one hand, embodiments of the present disclosure propose a display panel, including: a substrate, a first display surface, and a second display surface. The first display surface is disposed on the first surface of the substrate, and the second display surface is disposed on the second surface of the substrate; a plurality of first display pixels are disposed on the first display surface, and a plurality of second display pixels are disposed on the second display surface; the first display pixels and the second display pixels are connected through a conductive layer, and the conductive layer penetrates through a through hole opened on the substrate. The through hole corresponds to one of the first display pixels and one of the second display pixels. Among them, the conductive layer includes a first electron conduction layer and a second electron conduction layer. The first electron conduction layer is connected to the first display pixels, and the second electron conduction layer is connected to the second display pixels.

[0006] In some embodiments, the first display pixel includes: a first metal reflection layer, the first electron conduction layer, a first hole transport layer, a first light-emitting layer, a first electron transport layer, and a cathode layer; wherein, the first metal reflection layer is disposed on the first surface of the substrate, the first electron conduction layer is disposed between the first metal reflection layer and the first hole transport layer, the first light-emitting layer is disposed between the first hole transport layer and the first electron transport layer, and the first electron transport layer is disposed between the first light-emitting layer and the cathode layer; the second display pixel includes: a second metal reflection layer, the first electron conduction layer, a second electron transport layer, a second light-emitting layer, a second hole transport layer, and an anode layer; wherein, the second metal reflection layer is disposed on the second surface of the substrate, the second electron conduction layer is disposed between the second metal reflection layer and the second electron transport layer, the second light-emitting layer is disposed between the second electron transport layer and the second hole transport layer, and the second hole transport layer is disposed between the second light-emitting layer and the anode layer.

[0007] In some embodiments, the evaporation area of the first electron conduction layer completely covers the evaporation area of the first metal reflection layer, the evaporation area of the first hole transport layer completely covers the evaporation area of the first electron conduction layer, the evaporation area of the second electron conduction layer completely covers the evaporation area of the second metal reflection layer, and the evaporation area of the second electron transport layer completely covers the evaporation area of the second electron conduction layer; or, the evaporation area of the first electron conduction layer covers a part of the evaporation area of the first metal reflection layer, the evaporation area of the first hole transport layer completely covers the evaporation area of the first electron conduction layer and the other part of the evaporation area of the first metal reflection layer, the evaporation area of the second electron conduction layer covers a part of the evaporation area of the second metal reflection layer, and the evaporation area of the second electron transport layer completely covers the evaporation area of the second electron conduction layer and the other part of the evaporation area of the second metal reflection layer.

[0008] In some embodiments, it further includes: a plurality of first driving circuits and a plurality of second driving circuits; the first driving circuit is used to drive the first display pixel, the first driving end of the first driving circuit is electrically connected to the first metal reflection layer, and the second driving end of the first driving circuit is electrically connected to the cathode layer; the second driving circuit is used to drive the second display pixel, the first driving end of the second driving circuit is electrically connected to the second metal reflection layer, and the second driving end of the second driving circuit is electrically connected to the anode layer.

[0009] In some embodiments, both the first light-emitting layer and the second light-emitting layer are light-emitting layers including only a single color.

[0010] In some embodiments, both the first light-emitting layer and the second light-emitting layer are light-emitting layers that simultaneously include three colors: red, green, and blue.

[0011] In some embodiments, the stacking order of the first light-emitting layer and the second light-emitting layer toward the substrate is successively: blue, green, red.

[0012] In some embodiments, the projections of the first display pixel and the second display pixel on the substrate are misaligned and overlapped or completely overlapped.

[0013] In some embodiments, the through hole is located within the projection coverage ranges of the first light-emitting layer and the second light-emitting layer on the substrate.

[0014] In some embodiments, the material of the conductive layer is an organic material doped with metal;

[0015] The material of the substrate includes at least one of the following: glass, polyvinyl chloride, polyimide, silicon.

[0016] On the other hand, embodiments of the present disclosure provide an electronic device, including: the display panel according to any one of the embodiments of the present disclosure.

[0017] Embodiments of the present disclosure have a substrate, and a first display surface and a second display surface are respectively provided on both sides of the substrate. Since at least the weight of one substrate is reduced, the weight of the display panel that can be double-sided displayed is reduced as a whole. Moreover, embodiments of the present disclosure also open a through hole on the substrate, and a conductive layer shared by the two display surfaces is provided through the opened through hole. The conductive layer penetrates the through hole to connect the first display pixel and the second display pixel on both sides of the substrate, and there is no need to additionally design other connection lines outside the substrate. Also, the punching method reduces the weight of the substrate itself. By opening the through hole on the substrate, the substrate is fully utilized, further reducing the volume of the display panel, making the display panel that can be double-sided displayed have advantages such as a smaller volume and a smaller weight, which is beneficial for portability and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic cross-sectional structure diagram of a double-sided display panel provided by the prior art;

[0020] Figure 2Schematic cross-sectional structure diagram of the display panel provided by the embodiments of the present disclosure;

[0021] Figure 3 Partial cross-sectional structure schematic of the double-sided full-color display panel provided by the embodiments of the present disclosure Figure 1 ;

[0022] Figure 4 Partial cross-sectional structure schematic diagram of the double-sided white light display panel provided by the embodiments of the present disclosure;

[0023] Figure 5 Partial cross-sectional structure schematic of the double-sided full-color display panel provided by the embodiments of the present disclosure Figure 2 ;

[0024] Figure 6 Schematic diagram of voltage application during double-sided display provided by the embodiments of the present disclosure;

[0025] Figure 7 Schematic diagram of the CGL charge generation principle during double-sided display provided by the embodiments of the present disclosure;

[0026] Figure 8 Schematic diagram of voltage application during single-sided display provided by the embodiments of the present disclosure;

[0027] Figure 9 Pixel layout diagram of the display panel provided by the embodiments of the present disclosure;

[0028] Figure 10 Schematic diagram of the driving circuit design provided by the embodiments of the present disclosure Figure 1 ;

[0029] Figure 11 Schematic diagram of the driving circuit design provided by the embodiments of the present disclosure Figure 2 ;

[0030] Figure 12 Schematic diagram of the device structure of the full-color transparent display after adjusting the vias provided by the embodiments of the present disclosure;

[0031] Figure 13 Schematic diagram of the device structure of the white light transparent display after adjusting the vias provided by the embodiments of the present disclosure.

[0032] Reference numerals:

[0033] 1 - First display surface, 2 - Second display surface, 3 - Substrate, 11 - First display pixel, 21 - Second display pixel, 41 - First electron conduction layer, 42 - Second electron conduction layer. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0035] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or items appearing before the term cover the elements or items listed after the term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0036] To keep the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and known components are omitted in the present disclosure.

[0037] An embodiment of the present disclosure provides a display panel, the schematic cross-sectional structure of which is shown as Figure 2 follows and includes:

[0038] a substrate 3, a first display surface 1, and a second display surface 2, the first display surface is disposed on the first surface of the substrate, and the second display surface is disposed on the second surface of the substrate; a plurality of first display pixels 11 are disposed on the first display surface 1, and a plurality of second display pixels 21 are disposed on the second display surface 2; one first display pixel is connected to one second display pixel through a conductive layer, the conductive layer penetrates through a through hole formed in the substrate, and the through hole corresponds to one first display pixel and one second display pixel, wherein the conductive layer includes a first electron-conducting layer 41 and a second electron-conducting layer 42, the first electron-conducting layer 41 is connected to the first display pixel 11, and the second electron-conducting layer 42 is connected to the second display pixel 21.

[0039] An embodiment of the present disclosure has a substrate, with a first display surface and a second display surface provided on both sides of the substrate respectively. Since at least the weight of one substrate is reduced, the weight of the display panel that can perform double-sided display is overall reduced. Moreover, in the embodiment of the present disclosure, through holes are also opened on the substrate, and a conductive layer shared by the two display surfaces is provided through the opened through holes. The conductive layer penetrates the through holes to connect the first display pixels and the second display pixels on both sides of the substrate, eliminating the need to additionally design other connection lines outside the substrate. Also, the drilling method reduces the weight of the substrate itself. By opening through holes on the substrate, the substrate is fully utilized, further reducing the volume of the display panel, making the display panel have advantages such as a smaller volume and a smaller weight, which is beneficial for portability and convenient use.

[0040] To better achieve double-sided display, some adjustments are made to the design of the display pixels. Specifically, in implementation, the above-mentioned first display pixel includes: a first metal reflection layer, a first electron-conducting layer, a first hole-transporting layer, a first light-emitting layer, a first electron-transporting layer, and a cathode layer; wherein, the first metal reflection layer is provided on the first surface of the substrate, the first electron-conducting layer is provided between the first metal reflection layer and the first hole-transporting layer, the first light-emitting layer is provided between the first hole-transporting layer and the first electron-transporting layer, and the first electron-transporting layer is provided between the first light-emitting layer and the cathode layer; the above-mentioned second display pixel includes: a second metal reflection layer, a second electron-conducting layer, a second electron-transporting layer, a second light-emitting layer, a second hole-transporting layer, and an anode layer; wherein, the second metal reflection layer is provided on the second surface of the substrate, the second electron-conducting layer is provided between the second metal reflection layer and the second electron-transporting layer, the second light-emitting layer is provided between the second electron-transporting layer and the second hole-transporting layer, and the second hole-transporting layer is provided between the second light-emitting layer and the anode layer.

[0041] The first metal reflection layer of the above-mentioned first display pixel can be used alone as an anode, and the second metal reflection layer of the second display pixel can be used alone as a cathode, without affecting their independent use. When double-sided display is required, only the anode layer and the cathode layer need to be pressurized simultaneously.

[0042] The above-mentioned first light-emitting layer and the second light-emitting layer can both be light-emitting layers including only a single color such as red, green, blue, white, etc., that is, a display pixel emits only light of a single color, and the first display pixel and the second display pixel connected by the same conductive layer correspond to light of the same color.

[0043] When the above-mentioned first electron-conducting layer is used alone on the first display surface, it is at least used to assist the hole injection into the hole transport layer. When the second electron-conducting layer is used alone on the second display surface, it is at least used to assist the electron injection into the electron transport layer. Therefore, the evaporation area of the first electron-conducting layer at least covers a part of the evaporation area of the first metal reflective layer. The evaporation area of the first hole transport layer completely covers the evaporation area of the first electron-conducting layer and the other part of the evaporation area of the first metal reflective layer. The evaporation area of the second electron-conducting layer at least covers a part of the evaporation area of the second metal reflective layer. The evaporation area of the second electron transport layer completely covers the evaporation area of the second electron-conducting layer and the other part of the evaporation area of the second metal reflective layer.

[0044] Figure 3 It is a partial structure of a stacked double-sided full-color display panel provided by an embodiment of the present disclosure. Figure 3 In this structure, the evaporation area of the first electron-conducting layer only covers a part of the evaporation area of the first metal reflective layer, and the evaporation area of the second electron-conducting layer also only covers a part of the evaporation area of the second metal reflective layer. The substrate matrix selected in the embodiment of the present disclosure can be rigid glass or flexible PVC board. The conductive layer is a charge generation layer (CGL). Pixel-level openings are made in part of the substrate matrix for evaporating the CGL material, which plays the role of conducting and connecting the devices on both Face A (i.e., the second display surface) and Face B (i.e., the first display surface). Normal R / G / B device pixel structures are evaporated on both sides of the CGL material. It should be noted that because the CGL material is divided into the first electron-conducting layer (P-CGL) and the second electron-conducting layer (N-CGL), the device structures evaporated on Face A and Face B are opposite. That is, if the embodiment of the present disclosure is split, it can be considered as the superposition of two top-emitting devices, namely N-CGL / ETL (electron transport layer) / EML (light-emitting layer) / HTL (hole transport layer) / AND (anode layer) and P-CGL / HTL / EML / ETL / CTD (cathode layer). As for which group of devices corresponds to Face A or Face B specifically, it can be freely selected according to the actual usage situation.

[0045] Therefore, in the embodiments of the present disclosure, it can be considered that a stacked device structure exists between the anode (AND) and the cathode (CTD). The ITO / Ag / ITO (i.e., the second metal reflection layer) and the Al metal layer (i.e., the first metal reflection layer) located above the substrate matrix mainly function to generate light, that is, all the light on Face A and Face B is reflected to the top; considering the work function matching problem between the film layers in the device, the Al layer is located below the ETL layer of the device, and the ITO / Ag / ITO layer is located below the HTL layer of the device. Based on the above, when it is necessary to display a single-sided picture with the above display panel, only the TFT circuit design needs to be carried out on the Al layer or the ITO / Ag / ITO layer, that is, applying voltages to the Al electrode and the AND electrode on Face A can achieve the single display of Face A, and similarly, for the single display of Face B, only voltages need to be applied to the ITO / Ag / ITO layer and the CTD layer. When we need to use double-sided display, only voltages need to be applied to the CTD layer and the AND layer electrodes. Thus, it can be seen that the present disclosure can design and develop the TFT backplane circuit according to the actual usage scenario of the display, and has a wide range of applications and selection options.

[0046] The embodiments of the present disclosure can also replace the R / G / B full-color display scheme in the above embodiments with a white light stacked display scheme, that is, both the first light-emitting layer and the second light-emitting layer are light-emitting layers that simultaneously include three colors: red, green, and blue. Specifically, when implemented, the stacking order of the first light-emitting layer and the second light-emitting layer toward the substrate side successively includes: blue, green, red, that is, red is closest to the conductive layer to ensure the best stacked display effect. The embodiments of the present disclosure use R / G / B three-layer light-emitting layers to replace the single-layer light-emitting layer, and its structural schematic Figure 4 is shown; except for the difference in the light-emitting layer structure, the design of other regions is the same; this scheme can be well applied to white light double-sided display. Because it adopts a stacked device structure, it can well extend the service life of the device compared with the single layer, and has a relatively practical application prospect for TV products and products with a long service life requirement.

[0047] The above first electron-conducting layer and second electron-conducting layer can also have other structures, such as Figure 5 shown, the evaporation area of the above first electron-conducting layer completely covers the evaporation area of the first metal reflection layer, the evaporation area of the first hole transport layer completely covers the evaporation area of the first electron-conducting layer, the evaporation area of the second electron-conducting layer completely covers the evaporation area of the second metal reflection layer, and the evaporation area of the second electron transport layer completely covers the evaporation area of the second electron-conducting layer.

[0048] Figure 5The shown display panel can perform double-sided display on Face A and Face B. Only by applying voltages to AND and CTD, the schematic diagram of voltage application during double-sided display is as Figure 6 shown (only one pixel is used as an example in the figure), Figure 7 which is the schematic diagram of the CGL charge generation principle during double-sided display; when using the Figure 4 shown display panel for single-sided display, the schematic diagram of voltage application is as Figure 8 shown.

[0049] Based on the above embodiments, the embodiments of the present disclosure also provide a pixel (Pixel) layout diagram of a display panel, as Figure 9 shown (in the figure, for the convenience of comparison, the small box areas are drawn larger, which is only a schematic diagram and does not represent the actual pixel size. Each small box area in the figure is the CGL evaporation opening area (i.e., each through hole) provided on the substrate. It should be noted that in order to prevent color mixing problems during full-color display, the size of the evaporated EML layer needs to correspond to the metal reflection layer below to facilitate total reflection of the light emitted by the EML layer).

[0050] The embodiments of the present disclosure aim to solve the problem that current double-sided displays require two layers of Panels to be bonded. This structure is relatively simple, can be prepared in large areas, and is lightweight; when we replace rigid Glass with flexible PVC, the display panel can be prepared into a current flexible display, fundamentally solving the problems of inconvenient portability, high power consumption, and poor synchronization of current double-sided displays.

[0051] In addition to forming a double-sided display panel using the current screen bonding process, a double-sided evaporation device structure can also be used to achieve the purpose of double-sided display; however, this solution requires TFT circuits to be prepared on both the front and back sides to realize the on-off closure of pixel display, the process flow is complex, and often some other problems will occur during the process flow, including increased leakage of TFT current, scratching of the evaporated pixel area, and failure of TFE encapsulation. Therefore, it is difficult to see mass-produced products on the market and it is not used in mass production.

[0052] To make the display panel of the embodiments of the present disclosure have a more reasonable drive, the display panel of the embodiments of the present disclosure further includes: a plurality of first drive circuits and a plurality of second drive circuits; the first drive circuit is used to drive the first display pixels, the first drive end of the first drive circuit is electrically connected to the first metal reflection layer, and the second drive end of the first drive circuit is electrically connected to the cathode layer; the second drive circuit is used to drive the second display pixels, the first drive end of the second drive circuit is electrically connected to the second metal reflection layer, and the second drive end of the second drive circuit is electrically connected to the anode layer.

[0053] The above driving circuit can be designed differently according to the different positions of the first display pixel and the second display pixel on the substrate. The projections of the first display pixel and the second display pixel on the substrate may be misaligned and overlapped or completely overlapped. In the case where the projections of the first display pixel and the second display pixel on the substrate are completely overlapped, the designs of the above first driving circuit and second driving circuit can be as Figure 10 shown. In the case where the projections of the first display pixel and the second display pixel on the substrate are misaligned and overlapped, the designs of the above first driving circuit and second driving circuit can be as Figure 11 shown.

[0054] Since some display panels may be made in a larger size, in this case, it is desirable that the display panel can achieve a transparent display effect as much as possible, and it is not desirable that there are other materials affecting the transparent effect in the display area of the display panel. Based on the above considerations, the embodiments of the present disclosure can adjust the opening position of the through hole, that is, make the through hole within the projection coverage range of the first light-emitting layer and the second light-emitting layer on the substrate, that is, achieve the transparent display effect by changing the opening position and size of the through hole for evaporating the CGL material. Then, the first metal reflection layer and the second metal reflection layer are designed to be narrower, so that the pixels located on Face A and Face B can achieve a superimposed display effect. Therefore, the gray levels available during display are richer, and the overall display screen is more colorful. For example, if Face A originally has 10 gray level brightnesses and Face B has 10 gray level brightnesses, then 100 gray level brightnesses can be displayed after superimposition; Figure 12 FIG. is a schematic diagram of the device structure for full-color transparent display after adjusting the through hole, Figure 13 FIG. is a schematic diagram of the device structure for white light transparent display after adjusting the through hole. The driving circuit design scheme can refer to the above embodiments and will not be elaborated here.

[0055] Specifically, the material of the above conductive layer is preferably an organic material doped with a metal, such as an organic material doped with metals such as Yb and Li. The organic material can be a derivative of organic material classes such as carbazole, quinoline, naphthalene, imidazole, thiophene, etc. Those skilled in the art can select according to actual needs and are not limited here. For the substrate, the material selected can be any one or more of, for example, glass, polyvinyl chloride, polyimide, silicon, etc., and is not limited here either.

[0056] Embodiments of the present disclosure solve the problems of the current dual-sided display, such as bulky appearance, high power consumption, and inability to be flexible. The stacked device shares the CGL layer and the anode and cathode layers, and adopts a misaligned pixel design scheme to ensure the stability of dual-sided display and avoid the interference of dual-sided display. By preparing the TFT circuit and the metal reflection layer on the basis of pixel-level hollow glass, the evaporated pixel color can be white light display or RGB full-color display. By evaporating the cathode and anode on both sides, two layers of electrodes can be used to independently control the pixels. Therefore, the display effect of dual-sided display is basically close to that of single-layer lamination. Thus, true dual-sided display rather than laminated display is achieved.

[0057] Embodiments of the present disclosure also provide an electronic device, which at least includes the display panel in the above embodiments of the present disclosure. The structure of the display panel will not be described in detail here.

[0058] In embodiments of the present disclosure, the charge generation layer of the stacked device is used as the transmission functional layer connecting the stacked device, and the light-emitting layer and the bottom of the device are set as a fully reflective metal layer to achieve full-color display of the top-emitting device. At the same time, on the basis of this structure, the white light stacked device structure is introduced into the solution, and white light dual-sided display can be achieved, which is suitable for display requirements with a longer service life. In order to achieve precise control of stacked dual-sided display, two design schemes of drive circuits are given, which is convenient for mass production selection. For the selection of the substrate matrix, the solution can choose Glass or PVC matrix for mass production. When using the PVC matrix here, the dual-sided display panel can be flexibly curved and wound. Overall, the present disclosure provides a brand-new dual-sided display device structure based on stacked devices, which can achieve the portability and thinness of dual-sided display.

[0059] In addition, although exemplary embodiments have been described herein, their scope includes any and all embodiments based on the present disclosure with equivalent elements, modifications, omissions, combinations (e.g., solutions that cross various embodiments), adaptations or changes. The elements in the claims will be broadly interpreted based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application. The examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered only as examples, and the true scope and spirit are indicated by the full scope of the following claims and their equivalents.

[0060] The foregoing description is intended to be illustrative and not restrictive. For example, the above examples (or one or more aspects thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. Additionally, in the foregoing detailed description, various features may be grouped together to simplify the disclosure. This should not be construed as an intention that any feature of the disclosed subject matter that is not claimed is necessary for any claim. On the contrary, the subject matter of the disclosure may be less than all of the features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, where each claim stands on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the disclosure should be determined with reference to the appended claims and the full scope of equivalents to which such claims are entitled.

[0061] The above has described in detail multiple embodiments of the present disclosure, but the present disclosure is not limited to these specific embodiments. Based on the concept of the present disclosure, those skilled in the art can make various variations and modifications to the embodiments, and these variations and modifications should all fall within the scope of protection required by the present disclosure.

Claims

1. A display panel, characterized in that, it includes: a substrate, a first display surface and a second display surface, the first display surface is arranged on the first surface of the substrate, and the second display surface is arranged on the second surface of the substrate; a plurality of first display pixels are arranged on the first display surface, and a plurality of second display pixels are arranged on the second display surface; the first display pixel and the second display pixel are connected by a conductive layer, the conductive layer penetrates through a through hole opened on the substrate, the through hole corresponds to one first display pixel and one second display pixel, wherein, the conductive layer includes a first electron-conducting layer and a second electron-conducting layer, the first electron-conducting layer is connected to the first display pixel, and the second electron-conducting layer is connected to the second display pixel; the first display pixel includes: a first metal reflection layer, the first electron-conducting layer, a first hole transport layer, a first light-emitting layer, a first electron transport layer, a cathode layer; wherein, the first metal reflection layer is arranged on the first surface of the substrate, the first electron-conducting layer is arranged between the first metal reflection layer and the first hole transport layer, the first light-emitting layer is arranged between the first hole transport layer and the first electron transport layer, and the first electron transport layer is arranged between the first light-emitting layer and the cathode layer; the second display pixel includes: a second metal reflection layer, the first electron-conducting layer, a second electron transport layer, a second light-emitting layer, a second hole transport layer, an anode layer; wherein, the second metal reflection layer is arranged on the second surface of the substrate, the second electron-conducting layer is arranged between the second metal reflection layer and the second electron transport layer, the second light-emitting layer is arranged between the second electron transport layer and the second hole transport layer, and the second hole transport layer is arranged between the second light-emitting layer and the anode layer.

2. The display panel according to claim 1, characterized in that, the evaporation area of the first electron-conducting layer completely covers the evaporation area of the first metal reflection layer, the evaporation area of the first hole transport layer completely covers the evaporation area of the first electron-conducting layer, the evaporation area of the second electron-conducting layer completely covers the evaporation area of the second metal reflection layer, and the evaporation area of the second electron transport layer completely covers the evaporation area of the second electron-conducting layer; or, the evaporation area of the first electron-conducting layer covers a part of the evaporation area of the first metal reflection layer, the evaporation area of the first hole transport layer completely covers the evaporation area of the first electron-conducting layer and the other part of the evaporation area of the first metal reflection layer, the evaporation area of the second electron-conducting layer covers a part of the evaporation area of the second metal reflection layer, and the evaporation area of the second electron transport layer completely covers the evaporation area of the second electron-conducting layer and the other part of the evaporation area of the second metal reflection layer.

3. The display panel according to claim 1, characterized in that, it further includes: a plurality of first driving circuits, a plurality of second driving circuits; The first driving circuit is used to drive the first display pixel. A first driving end of the first driving circuit is electrically connected to the first metal reflection layer, and a second driving end of the first driving circuit is electrically connected to the cathode layer; The second driving circuit is used to drive the second display pixel. A first driving end of the second driving circuit is electrically connected to the second metal reflection layer, and a second driving end of the second driving circuit is electrically connected to the anode layer.

4. The display panel according to claim 1, wherein, both the first light-emitting layer and the second light-emitting layer are light-emitting layers including only a single color.

5. The display panel according to claim 1, wherein, both the first light-emitting layer and the second light-emitting layer are light-emitting layers including three colors of red, green, and blue at the same time.

6. The display panel according to claim 1, wherein, the projections of the first display pixel and the second display pixel on the substrate are misaligned and overlapped or completely overlapped.

7. The display panel according to any one of claims 1 to 6, wherein, the through hole is located within the projection coverage ranges of the first light-emitting layer and the second light-emitting layer on the substrate.

8. The display panel according to any one of claims 1 to 6, wherein, the material of the conductive layer is an organic material doped with metal; the material of the substrate includes at least one of the following: glass, polyvinyl chloride, polyimide, silicon.

9. An electronic device, wherein, comprising: the display panel according to any one of claims 1 to 8.

Images