Display panel and display device

Abstract

This application provides a display panel and a display device. The display panel includes a shared display mode and a privacy display mode. The display panel includes a substrate, a first pixel definition layer, and a second pixel definition layer. The first pixel definition layer includes a first pixel defining portion, which encloses a first opening for accommodating at least one lower light-emitting unit. The second pixel definition layer includes a second pixel defining portion, which encloses a second opening and a third opening. The second opening is used to accommodate at least one upper light-emitting unit. The orthographic projection of the lower light-emitting unit onto the substrate and the orthographic projection of the third opening onto the substrate at least partially overlap. The display panel implemented in this application can dynamically switch the light emission angle in real time, thereby achieving privacy display without occupying the pixel opening area of ​​normal display, thus improving the aperture ratio.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) are self-emissive display devices. Compared to traditional liquid crystal displays (LCDs), OLED technology does not require a backlight and is self-emissive. OLEDs use a thin layer of organic material and a glass substrate; when current flows through, the organic material emits light. Therefore, OLED display panels can significantly save energy, be made lighter and thinner, withstand a wider range of temperature variations than LCD panels, and have a wider viewing angle. OLED display panels are expected to become the next-generation flat panel display technology after LCDs and are currently one of the most watched technologies in the flat panel display field. Summary of the Invention

[0003] This application provides a display panel and a display device, which aim to improve the aperture ratio of the display panel.

[0004] An embodiment of the first aspect of this application provides a display panel, the display panel comprising: a substrate; a first pixel defining layer located on one side of the substrate, the first pixel defining layer including a first pixel defining portion, the first pixel defining portion enclosing a first opening for accommodating a lower light-emitting unit; a second pixel defining layer located on the side of the first pixel defining layer opposite to the substrate, the second pixel defining layer including a second pixel defining portion, the second pixel defining portion enclosing a second opening and a third opening, the second opening for accommodating an upper light-emitting unit; wherein the orthographic projection of the lower light-emitting unit onto the substrate and the orthographic projection of the third opening onto the substrate at least partially overlap.

[0005] According to an embodiment of the first aspect of this application, the orthographic projection of the upper light-emitting unit onto the substrate and the orthographic projection of the first pixel definition layer onto the substrate at least partially overlap.

[0006] According to an embodiment of the first aspect of this application, the orthographic projection of the lower light-emitting unit onto the substrate is located within the orthographic projection of the third opening onto the substrate.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the display panel includes a shared display mode and a privacy display mode. In the shared display mode, the lower light-emitting unit does not emit light, and the upper light-emitting unit emits light. In the privacy display mode, the lower light-emitting unit emits light, and the upper light-emitting unit does not emit light.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the upper light-emitting unit onto the substrate is located within the orthographic projection of the first pixel-defining portion onto the substrate. According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the second pixel-defining portion onto the substrate is located within the orthographic projection of the first pixel-defining portion onto the substrate.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the material of the first pixel definition layer and / or the second pixel definition layer includes a light-shielding material.

[0010] According to any of the foregoing embodiments of the first aspect of this application, a first electrode is provided on the side of the upper light-emitting unit away from the substrate.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the first electrode is a transparent electrode.

[0012] According to any of the foregoing embodiments of the first aspect of this application, a second electrode is provided on the side of the upper light-emitting unit near the substrate.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the material of the first electrode includes at least one of indium tin oxide and indium zinc oxide.

[0014] According to any of the foregoing embodiments of the first aspect of this application, the material of the second electrode includes at least one of gold, platinum, titanium, silver, and indium tin oxide.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the second electrode is a metal electrode.

[0016] According to any of the foregoing embodiments of the first aspect of this application, the area of ​​the first opening projected onto the substrate is greater than the area of ​​the second opening projected onto the substrate.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes at least one first pixel circuit, the at least one first pixel circuit being located on the side of the first pixel definition layer opposite to the second pixel definition layer.

[0018] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes at least one second pixel circuit, the at least one second pixel circuit being located between the second pixel definition layer and the first pixel definition layer, and the orthographic projection of the second pixel circuit on the substrate and the orthographic projection of the third opening on the substrate do not overlap.

[0019] According to any of the foregoing embodiments of the first aspect of this application, a plurality of second pixel circuits are arranged at intervals.

[0020] According to any of the foregoing embodiments of the first aspect of this application, a first encapsulation layer is further included between the first pixel definition layer and the second pixel definition layer, and / or, the side of the second pixel definition layer facing away from the substrate is further included with a second encapsulation layer.

[0021] According to any of the foregoing embodiments of the first aspect of this application, a first planarization layer is further included between the first pixel definition layer and the substrate, and / or a second planarization layer is further included between the first encapsulation layer and the second pixel definition layer.

[0022] According to any of the foregoing embodiments of the first aspect of this application, a filler layer is further included between the first encapsulation layer and the second planarization layer.

[0023] According to any of the foregoing embodiments of the first aspect of this application, an adhesive layer is further included between the first encapsulation layer and the second pixel definition layer.

[0024] According to any of the foregoing embodiments of the second aspect of this application, a display module includes the display panel as described above.

[0025] In the display panel, the method for manufacturing the display panel, and the display panel of this application, the display panel includes a substrate, a first pixel definition layer, an upper light-emitting unit, a second pixel definition layer, and a lower light-emitting unit. The first pixel definition layer is located on one side of the substrate and includes a first pixel defining portion and a first opening. The first pixel defining portion surrounds and forms the first opening. At least one lower light-emitting unit is located in the first opening and is used to achieve a privacy display state for the display panel. The first opening is used to improve the problem of light emission crosstalk between different color light-emitting units. The second pixel definition layer is located on the side of the first pixel definition layer away from the substrate. The second pixel definition layer includes a second pixel defining portion, a second opening, and a third opening. The second pixel defining portion surrounds and forms the second opening and the third opening. At least one upper light-emitting unit is located in the second opening. The upper light-emitting unit is used to achieve a shared display state for the display panel. The second opening is used to improve the problem of light emission crosstalk between different color light-emitting units. The third opening is used to allow light emitted by the lower light-emitting unit to be emitted. In this design, the orthographic projection of the lower light-emitting unit onto the substrate and the orthographic projection of the third opening onto the substrate at least partially overlap, causing the upper and lower light-emitting units to be staggered. The lower light-emitting unit does not occupy the pixel opening area of ​​the upper light-emitting unit, while the light emitted by the lower light-emitting unit can exit through the upper third opening. At least part of the side light emitted by the lower light-emitting unit is blocked by the second pixel limiting portion, reducing the light emission angle. This achieves privacy protection without occupying the pixel opening area for normal display, thus improving the aperture ratio. Attached Figure Description

[0026] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0027] Figure 1 This is one of the top views of a display panel provided in an embodiment of this application;

[0028] Figure 2 This is a second top view of a display panel provided in an embodiment of this application;

[0029] Figure 3 This is a top view of a display panel provided in an embodiment of this application;

[0030] Figure 4 yes Figure 1 Sectional view at point AA;

[0031] Figure 5 This is a top view of a display panel provided in an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 000, Display panel;

[0034] 100. Substrate;

[0035] 200, First planarization layer; 210, First pixel circuit;

[0036] 300, First pixel definition layer; 310, First pixel limiting part; 320, First opening; 330, Lower light-emitting unit;

[0037] 400, First encapsulation layer; 410, Filler layer; 420, Adhesive layer;

[0038] 500, Second substrate;

[0039] 600. Second planarization layer; 610. Second pixel circuit;

[0040] 700, Second pixel definition layer; 710, Second pixel limiting part; 720, Second opening; 730, Upper light-emitting unit; 740, Third opening;

[0041] 800, First electrode; 810, Second electrode;

[0042] 900, Second encapsulation layer. Detailed Implementation

[0043] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0044] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] Organic light-emitting diodes (OLEDs) are currently the mainstream display products used in smart display terminals due to their many advantages, such as self-illumination, high brightness, high contrast, wide color gamut, fast response speed, wide viewing angle, low power consumption, and flexible display.

[0047] With the widespread use of portable devices such as smartphones and tablets, while enjoying the convenience brought by technology, people are also paying increasing attention to personal privacy and security. Therefore, to prevent information leakage, developing OLED displays with privacy features has become a research hotspot in recent years. Since OLED display products need to simultaneously support screen sharing and privacy display modes, existing OLED display products with privacy features typically have shared pixels and privacy pixels arranged on the same layer. The privacy pixels occupy part of the aperture area of ​​the normally shared pixels, resulting in a low pixel aperture ratio. To solve the above technical problems, this application is proposed. To better understand this application, the following describes... Figures 1 to 5 A display panel and display device according to embodiments of this application will be described in detail.

[0048] Please refer to the following: Figures 1 to 4 An embodiment of the first aspect of this application provides a display panel 000, which includes a substrate 100, a first pixel definition layer 300, a lower light-emitting unit 330, a second pixel definition layer 700, and an upper light-emitting unit 730. The first pixel definition layer 300 is located on one side of the substrate 100 and includes a first pixel defining portion 310 and a first opening 320. The first pixel defining portion 310 surrounds the first opening 320, and at least one lower light-emitting unit 330 is located in the first opening 320. The second pixel definition layer 700 is located on the side of the first pixel definition layer 300 facing away from the substrate 100. The second pixel definition layer 700 includes a second pixel defining portion 710, a second opening 720, and a third opening 740. The second pixel defining portion 710 surrounds the second opening 720 and the third opening 740, and at least one upper light-emitting unit 730 is located in the second opening 720. The projection of the lower light-emitting unit 330 onto the substrate 100 and the projection of the third opening 740 onto the substrate 100 overlap at least partially.

[0049] In the display panel 000 provided in the first aspect of this application, the display panel 000 includes a substrate 100, a first pixel definition layer 300, a lower light-emitting unit 330, a second pixel definition layer 700, and an upper light-emitting unit 730. The first pixel definition layer 300 is located on one side of the substrate 100. The first pixel definition layer 300 includes a first pixel defining portion 310 and a first opening 320. The first pixel defining portion 310 surrounds and forms the first opening 320. At least one lower light-emitting unit 330 is located in the first opening 320 and is used to realize the privacy display state of the display panel 000. The first opening 320 is used to improve the problem of light crosstalk between different color light-emitting units. The second pixel definition layer 700 is located on the side of the first pixel definition layer 300 facing away from the substrate 100. The second pixel definition layer 700 includes a second pixel defining portion 710, a second opening 720, and a third opening 740. The second pixel defining portion 710 surrounds the second opening 720 and the third opening 740. At least one upper light-emitting unit 730 is located in the second opening 720. The upper light-emitting unit 730 is used to realize the shared display state of the display panel 000. The second opening 720 is used to improve the problem of light emission crosstalk between different color light-emitting units. The third opening 740 is used to allow the light emitted by the lower light-emitting unit 330 to be emitted. The orthographic projection of the lower light-emitting unit 330 on the substrate 100 and the orthographic projection of the third opening 740 on the substrate 100 overlap at least partially, so that the upper light-emitting unit 730 and the lower light-emitting unit 330 are staggered. The lower light-emitting unit 330 does not occupy the pixel opening area of ​​the upper light-emitting unit 730, and the light emitted by the lower light-emitting unit 330 can be emitted from the upper third opening 740. At least part of the side light emitted by the lower light-emitting unit 330 is blocked by the second pixel limiting part 710, which reduces the light emission angle and puts the display panel 000 in a narrow viewing angle state to prevent peeping, while not occupying the pixel opening area of ​​normal display, thereby improving the aperture ratio.

[0050] Optionally, the upper light-emitting unit 730 and / or the lower light-emitting unit 330 may emit different colors to achieve a color display of the display panel 000. For example, the upper light-emitting unit 730 and / or the lower light-emitting unit 330 may include a red light-emitting unit for emitting red light, a green light-emitting unit for emitting green light, and a blue light-emitting unit for emitting blue light.

[0051] In some optional embodiments, the orthographic projection of the upper light-emitting unit 730 on the substrate 100 and the orthographic projection of the first pixel definition layer 300 on the substrate 100 at least partially overlap; optionally, the orthographic projection of the lower light-emitting unit 330 on the substrate 100 is located within the orthographic projection of the third opening 740 on the substrate 100.

[0052] Optionally, the display panel 000 includes a shared display mode and a privacy display mode. In shared display mode, such as... Figure 2As shown, the lower light-emitting unit 330 does not emit light, while the upper light-emitting unit 730 emits light. In the privacy display mode, as... Figure 3 As shown, the lower light-emitting unit 330 emits light, while the upper light-emitting unit 730 does not emit light.

[0053] Optionally, the display panel 000 also includes a controller, which allows the user to adjust whether the upper light-emitting unit 730 and the lower light-emitting unit 330 emit light as needed, thereby switching the light emission angle and enabling the display panel 000 to switch between shared display mode and privacy display mode.

[0054] In these alternative embodiments, such as Figure 1 As shown, the upper light-emitting unit 730 and the lower light-emitting unit 330 are staggered. The lower light-emitting unit 330 does not occupy the pixel opening area of ​​the upper light-emitting unit 730, and the light emitted by the lower light-emitting unit 330 can be emitted from the upper third opening 740. This allows the forward light emitted from the lower light-emitting unit 330 to be emitted from the third opening 740 without being blocked, thus realizing the display function in the privacy display mode.

[0055] In some alternative embodiments, the orthographic projection of the upper light-emitting unit 730 onto the substrate 100 is located within the orthographic projection of the first pixel limiting portion 310 onto the substrate 100.

[0056] In these optional embodiments, the orthographic projection of the upper light-emitting unit 730 onto the substrate 100 is located within the orthographic projection of the first pixel limiting portion 310 onto the substrate 100, so that the orthographic projection of the upper light-emitting unit 730 onto the substrate 100 and the orthographic projection of the lower light-emitting unit 330 onto the substrate 100 do not overlap, and the lower light-emitting unit 330 does not occupy the opening area of ​​the upper light-emitting unit 730, thereby improving the aperture ratio.

[0057] Optionally, the orthographic projection of the second pixel limiting portion 710 onto the substrate 100 is located within the orthographic projection of the first pixel limiting portion 310 onto the substrate 100, thereby allowing the forward light emitted from the lower light-emitting unit 330 to be emitted from the third opening 740 without being blocked by the second pixel limiting portion 710, thus realizing the display function in the privacy display mode.

[0058] In some alternative embodiments, the material of the first pixel definition layer 300 and / or the second pixel definition layer 700 includes a light-shielding material.

[0059] In these alternative embodiments, the material of the first pixel definition layer 300 and / or the second pixel definition layer 700 including a light-shielding material can improve the problem of light crosstalk between different color light-emitting units. At the same time, the second pixel definition layer 700 can block at least part of the side light emitted by the lower light-emitting unit 330, thereby reducing the light emission angle and realizing privacy display.

[0060] In some alternative embodiments, the upper light-emitting unit 730 has a first electrode 800 disposed on the side opposite to the substrate 100.

[0061] In these alternative embodiments, the first electrode 800 is used to drive the upper light-emitting unit 730 to emit light, thereby realizing the display function in the privacy display mode.

[0062] Optionally, the first electrode 800 can be a metal electrode or a transparent electrode. Optionally, the first electrode 800 can be a metal electrode, and the material of the first electrode 800 can be at least one of silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca), indium (In), magnesium-silver alloy (Mg / Ag), and lithium-aluminum alloy (Li / Al). For example, the first electrode 800 can be a translucent or other light-transmitting metal material to achieve the display function. Optionally, the first electrode 800 can be a transparent electrode, allowing light emitted from the lower light-emitting unit 330 to pass through the first electrode 800 without being blocked, resulting in greater brightness and a better display effect.

[0063] Optionally, a second electrode 810 is provided on the side of the upper light-emitting unit 730 near the substrate 100. The second electrode 810 is used to drive the contact portion between the upper light-emitting unit 730 and the second electrode 810 to emit light, thereby realizing the display function of the display panel 000.

[0064] Optionally, the material of the first electrode 800 may include at least one of indium tin oxide and indium zinc oxide, which has good electrical conductivity and allows light to pass through.

[0065] Optionally, the material of the second electrode 810 includes at least one of gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), tin zinc oxide (IZO), or a transparent conductive polymer. The above materials have good conductivity and are inexpensive, thus saving costs.

[0066] Optionally, the second electrode 810 can be a metal electrode, which can block the light emitted from the lower light-emitting unit 330, narrow the viewing angle, and thus achieve privacy display.

[0067] In some alternative embodiments, the display panel 000 further includes at least one first pixel circuit 210, which is located on the side of the first pixel definition layer 300 opposite to the second pixel definition layer 700.

[0068] In these alternative embodiments, the first pixel circuit 210 is used to drive the lower light-emitting unit 330 to emit light.

[0069] In some alternative embodiments, such as Figure 4 and Figure 5 As shown, the display panel 000 also includes a second pixel circuit 610. The second pixel circuit 610 is located on the side of the second pixel definition layer 700 close to the first pixel definition layer 300, and the orthographic projection of the second pixel circuit 610 on the substrate 100 does not overlap with the orthographic projection of the third opening 740 on the substrate 100.

[0070] In these optional embodiments, at least one second pixel circuit 610 is used to drive the upper light-emitting unit 730 to emit light. The orthographic projection of at least one second pixel circuit 610 on the substrate 100 does not overlap with the orthographic projection of the third opening 740 on the substrate 100, so that the light emitted from the lower light-emitting unit 330 is not blocked, resulting in greater brightness and better display effect.

[0071] Optionally, the orthographic projection of the second pixel circuit 610 onto the substrate 100 is located within the orthographic projection of the first pixel limiting portion 310 onto the substrate 100, which can prevent the light emitted from the lower light-emitting unit 330 from being blocked, resulting in greater brightness and better display effect.

[0072] Optional, such as Figure 5 As shown, multiple second pixel circuits 610 can be arranged at intervals, which can improve the problem of local overheating and thus extend the service life of the display panel 000.

[0073] In some alternative embodiments, a first encapsulation layer 400 is further included between the first pixel definition layer 300 and the second pixel definition layer 700, and / or, a second encapsulation layer 900 is further included on the side of the second pixel definition layer 700 facing away from the substrate 100.

[0074] In these alternative embodiments, the first encapsulation layer 400 and the second encapsulation layer 900 can encapsulate the lower light-emitting unit 330 and the upper light-emitting unit 730 respectively, thereby improving the problem of moisture intrusion.

[0075] Optionally, the first encapsulation layer 400 and / or the second encapsulation layer 900 may include a first sub-layer, a second sub-layer and a third sub-layer disposed sequentially along the side opposite to the substrate 100, so as to encapsulate the display panel 000 and ensure the effectiveness of the encapsulation.

[0076] Optionally, the first sub-layer can be an inorganic encapsulation layer. The inorganic encapsulation layer can be prepared by chemical vapor deposition, which can improve the density of the first sub-layer and thus improve the encapsulation effect of the encapsulation layer.

[0077] Optionally, the first encapsulation layer 400 and / or the second encapsulation layer 900 may further include a second sublayer located on the side of the first sublayer facing away from the substrate 100, and the material of the second sublayer includes an organic material. That is, the second sublayer is an organic encapsulation layer, which can be prepared by inkjet printing, allowing the encapsulation layer to have a suitable thickness.

[0078] Optionally, the first encapsulation layer 400 and / or the second encapsulation layer 900 may further include a third sublayer located on the side of the second sublayer facing away from the substrate 100, and the material of the third sublayer includes inorganic materials. That is, the third sublayer is an inorganic encapsulation layer, and adding another inorganic encapsulation layer outside the organic encapsulation layer can further improve the encapsulation effect of the encapsulation layer.

[0079] Optionally, the materials of the first sub-layer and the third sub-layer can be the same. This allows the first and third sub-layers to be fabricated using the same equipment, simplifying the fabrication process of the display panel.

[0080] Optionally, a first planarization layer 200 may be further included between the first pixel definition layer 300 and the substrate 100, and / or a second planarization layer 600 may be further included between the first encapsulation layer 400 and the second pixel definition layer 700. The first planarization layer 200 and the second planarization layer 600 can make the film layers of the display panel 000 tend to be flat, which facilitates encapsulation.

[0081] Optionally, the first pixel circuit 210 may be located between the substrate 100 and the first planarization layer 200, and the second pixel circuit 610 may be located between the substrate 100 and the second planarization layer 600.

[0082] Optionally, the side of the second planarization layer 600 opposite to the second pixel definition layer 700 also includes a second substrate 500, and pixel driving circuits are disposed on both the substrate 100 and the second substrate 500. The upper and lower pixels can be fabricated separately and then bonded together with high precision. Optionally, a filler layer 410 is further included between the first encapsulation layer 400 and the second pixel definition layer 700. The filler layer 410 can provide protection for the film layer and give the display panel 000 a suitable thickness. For example, a filler layer 410 can be disposed between the second substrate 500 and the first encapsulation layer 400 to protect the film layer of the display panel 000 and give the display panel 000 a suitable thickness.

[0083] Optionally, the material of the filler layer 410 may include an organic adhesive, which can give the display panel 000 a suitable thickness.

[0084] Alternatively, in some other alternative embodiments, such as Figure 4As shown, an adhesive layer 420 is also included between the first encapsulation layer 400 and the second pixel definition layer 700. For example, the first encapsulation layer 400 and the second substrate 500 can be directly framed. That is, adhesive is applied around the second substrate 500 to form the adhesive layer 420, and then high-precision bonding is performed. The adhesive layer 420 can improve the adhesion between the first pixel definition layer 300 and the second pixel definition layer 700, and can also improve the effectiveness of encapsulation.

[0085] Optionally, the second substrate 500 can be a transparent substrate so as not to block the light emitted from the lower light-emitting unit 330 and improve the display effect.

[0086] An embodiment of the second aspect of this application provides a display device including the display panel 000 as described above.

[0087] In the display device provided in the second aspect of this application, the display device includes a display panel 000, which includes a substrate 100, a first pixel definition layer 300, and a second pixel definition layer 700. The first pixel definition layer 300 is located on one side of the substrate 100 and includes a first pixel defining portion 310. The first pixel defining portion 310 surrounds and forms a first opening 320 for accommodating at least one lower light-emitting unit 330. The lower light-emitting unit 330 is used to realize the privacy display state of the display panel 000, and the first opening 320 is used to improve the problem of light crosstalk between different color light-emitting units. The second pixel definition layer 700 is located on the side of the first pixel definition layer 300 facing away from the substrate 100. The second pixel definition layer 700 includes a second pixel defining portion 710, which encloses a second opening 720 and a third opening 740. The second opening 720 is used to accommodate at least one upper light-emitting unit 730, which is used to realize the shared display state of the display panel 000. The second opening 720 is used to improve the problem of light crosstalk between different color light-emitting units. The third opening 740 is used to allow light emitted by the lower light-emitting unit 330 to be emitted. The orthographic projection of the lower light-emitting unit 330 on the substrate 100 and the orthographic projection of the third opening 740 on the substrate 100 at least partially overlap, so that the upper light-emitting unit 730 and the lower light-emitting unit 330 are staggered. The lower light-emitting unit 330 does not occupy the pixel opening area of ​​the upper light-emitting unit 730, and the light emitted by the lower light-emitting unit 330 can be emitted from the upper third opening 740, thereby improving the aperture ratio.

[0088] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0089] This application may be implemented in other specific forms without departing from its spirit and essential characteristics. For example, the algorithm described in a particular embodiment may be modified without departing from the basic spirit of this application. Therefore, the present embodiments are to be regarded as exemplary rather than limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description, and all changes falling within the meaning and scope of the claims and their equivalents are thus included within the scope of this application.

Claims

1. A display panel, characterized in that, The display panel includes: substrate; A first pixel definition layer is located on one side of the substrate. The first pixel definition layer includes a first pixel defining portion and a first opening, wherein the first pixel defining portion surrounds and forms the first opening. Lower light-emitting unit, at least one of the lower light-emitting units is located in the first opening; The second pixel definition layer is located on the side of the first pixel definition layer away from the substrate. The second pixel definition layer includes a second pixel defining portion, a second opening, and a third opening. The second pixel defining portion surrounds the second opening and the third opening. The material of the first pixel definition layer includes a light-shielding material, and the material of the second pixel definition layer includes a light-shielding material. At least one of the upper light-emitting units is located in the second opening; In this configuration, the lower light-emitting unit's orthographic projection onto the substrate is located within the orthographic projection of the third opening onto the substrate, and the area of ​​the first opening's orthographic projection onto the substrate is larger than the area of ​​the second opening's orthographic projection onto the substrate. The display panel includes a shared display mode and a privacy display mode. In the shared display mode, the lower light-emitting unit does not emit light, while the upper light-emitting unit emits light. In the privacy display mode, the lower light-emitting unit emits light, while the upper light-emitting unit does not emit light.

2. The display panel according to claim 1, characterized in that, The orthographic projection of the upper light-emitting unit onto the substrate and the orthographic projection of the first pixel definition layer onto the substrate at least partially overlap.

3. The display panel according to claim 2, characterized in that, The upper light-emitting unit is projected onto the substrate in the orthographic projection of the first pixel limiting portion onto the substrate.

4. The display panel according to claim 3, characterized in that, The second pixel defining portion is projected onto the substrate in the same direction as the first pixel defining portion on the substrate.

5. The display panel according to claim 1, characterized in that, The upper light-emitting unit has a first electrode on the side opposite to the substrate.

6. The display panel according to claim 5, characterized in that, The first electrode is a transparent electrode.

7. The display panel according to claim 5, characterized in that, The upper light-emitting unit has a second electrode disposed on the side closest to the substrate.

8. The display panel according to claim 7, characterized in that, The material of the first electrode includes at least one of indium tin oxide and indium zinc oxide.

9. The display panel according to claim 7, characterized in that, The material of the second electrode includes at least one of gold, platinum, titanium, silver, and indium tin oxide.

10. The display panel according to claim 7, characterized in that, The second electrode is a metal electrode.

11. The display panel according to claim 1, characterized in that, The display panel further includes at least one first pixel circuit, wherein the at least one first pixel circuit is located on the side of the first pixel definition layer opposite to the second pixel definition layer.

12. The display panel according to claim 1, characterized in that, The display panel further includes at least one second pixel circuit, which is located between the second pixel definition layer and the first pixel definition layer, and the orthographic projection of the second pixel circuit on the substrate does not overlap with the orthographic projection of the third opening on the substrate.

13. The display panel according to claim 12, characterized in that, The orthographic projection of the second pixel circuit onto the substrate is located within the orthographic projection of the first pixel defining portion onto the substrate.

14. The display panel according to claim 12, characterized in that, Multiple second pixel circuits are spaced apart.

15. The display panel according to claim 1, characterized in that, A first encapsulation layer is further included between the first pixel definition layer and the second pixel definition layer, and / or, the side of the second pixel definition layer facing away from the substrate is further included with a second encapsulation layer.

16. The display panel according to claim 15, characterized in that, The first pixel definition layer and the substrate further include a first planarization layer, and / or the first encapsulation layer and the second pixel definition layer further include a second planarization layer.

17. The display panel according to claim 16, characterized in that, A filler layer is also included between the first encapsulation layer and the second planarization layer.

18. The display panel according to claim 15, characterized in that, An adhesive layer is also included between the first encapsulation layer and the second pixel definition layer.

19. A display device, characterized in that, Includes the display panel as described in any one of claims 1-18.

Images