Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, the display panel comprises a shared display mode and a peep-proof display mode, and the display panel comprises a substrate, a first pixel definition layer and a second pixel definition layer. The first pixel defining layer comprises a first pixel defining part, and the first pixel defining part is enclosed to form a first opening used for accommodating at least one lower layer light emitting unit. The second pixel defining layer comprises a second pixel defining part, the second pixel defining part is enclosed to form a second opening and a third opening, and the second opening is used for accommodating at least one upper layer light emitting unit. The orthographic projection of the lower layer light-emitting unit on the substrate and the orthographic projection of the third opening on the substrate are at least partially overlapped. According to the display panel, the light emitting visual angle can be dynamically switched in real time, so that the pixel opening area of normal display is not occupied while peep-proof display is achieved, and the opening rate is increased.

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) is an active light-emitting device. Compared with the traditional liquid crystal display (LCD) display method, OLED display technology does not require a backlight and has the characteristic of self-luminescence. OLED uses a thinner organic material film layer and a glass substrate. When an electric current passes through, the organic material will emit light. Therefore, OLED display panels can significantly save electricity, can be made lighter and thinner, can withstand a wider range of temperature changes than LCD display panels, and have a larger viewing angle. OLED display panels are expected to become the next generation of flat-panel display technology after LCD, and are one of the most popular technologies in flat-panel display technology. Summary of the invention

[0003] Embodiments of the present application provide a display panel and a display device, aiming to improve the aperture ratio of the display panel.

[0004] An embodiment of the first aspect of the present application provides a display panel, which includes: a substrate; a first pixel definition layer, located on one side of the substrate, the first pixel definition 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 definition layer, located on a side of the first pixel definition layer away from the substrate, the second pixel definition layer including a second pixel defining portion, the second pixel defining portion enclosing a second opening and a third opening, the second opening being used to accommodate an upper light-emitting unit; wherein the orthographic projection of the lower light-emitting unit on the substrate and the orthographic projection of the third opening on the substrate at least partially overlap.

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

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

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel includes a shared display mode and an anti-peeping 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 anti-peeping 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 aforementioned embodiments of the first aspect of the present application, the orthographic projection of the upper light-emitting unit on the substrate is located within the orthographic projection of the first pixel defining portion on the substrate. According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the second pixel defining portion on the substrate is located within the orthographic projection of the first pixel defining portion on the substrate.

[0009] According to any of the aforementioned embodiments of the first aspect of the present 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 aforementioned embodiments of the first aspect of the present application, a first electrode is provided on a side of the upper light-emitting unit facing away from the substrate.

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

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

[0013] According to any of the aforementioned embodiments of the first aspect of the present 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 aforementioned embodiments of the first aspect of the present 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 aforementioned embodiments of the first aspect of the present application, the second electrode is a metal electrode.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, an area of ​​an orthographic projection of the first opening on the substrate is larger than an area of ​​an orthographic projection of the second opening on the substrate.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes at least one first pixel circuit, and the at least one first pixel circuit is located on a side of the first pixel definition layer away from the second pixel definition layer.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes at least one second pixel circuit, the at least one second pixel circuit 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.

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

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

[0021] According to any of the aforementioned embodiments of the first aspect of the present 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 aforementioned embodiments of the first aspect of the present application, a filling layer is further included between the first encapsulation layer and the second planarization layer.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, a bonding layer is further included between the first encapsulation layer and the second pixel definition layer.

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

[0025] In the display panel, the method for preparing the display panel and the display panel of the present 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, the first pixel definition layer includes a first pixel defining portion and a first opening, the first pixel defining portion encloses to form the first opening, at least one lower light-emitting unit is located at the first opening and is used to realize the anti-peeping display state of the display panel, and the first opening is used to improve the problem of light crosstalk between light-emitting units of different colors. 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 encloses to form a second opening and a third opening, at least one upper light-emitting unit is located at the second opening, the upper light-emitting unit is used to realize the shared display state of the display panel, the second opening is used to improve the problem of light crosstalk between light-emitting units of different colors, and the third opening is used to emit the light emitted by the lower light-emitting unit. The orthographic projection of the lower light-emitting unit on the substrate and the orthographic projection of the third opening on the substrate at least partially overlap, so that the upper light-emitting unit and the lower light-emitting unit are staggered, and the lower light-emitting unit does not occupy the pixel opening area of ​​the upper light-emitting unit, and the light emitted by the lower light-emitting unit can be emitted from the third opening above. 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 output angle, thereby realizing anti-peeping display without occupying the pixel opening area of ​​normal display, and improving the aperture ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

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

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

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

[0030] Figure 4 yes Figure 1 Sectional view at AA in the middle;

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

[0032] Description of reference numerals:

[0033] 000, display panel;

[0034] 100. Substrate;

[0035] 200, a first planarization layer; 210, a first pixel circuit;

[0036] 300, first pixel definition layer; 310, first pixel definition portion; 320, first opening; 330, lower light emitting unit;

[0037] 400, first encapsulation layer; 410, filling layer; 420, bonding layer;

[0038] 500. a second substrate;

[0039] 600, a second planarization layer; 610, a second pixel circuit;

[0040] 700, second pixel definition layer; 710, second pixel definition portion; 720, second opening; 730, upper light emitting unit; 740, third opening;

[0041] 800, a first electrode; 810, a second electrode;

[0042] 900. Second packaging layer. DETAILED DESCRIPTION

[0043] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that 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 examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0044] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] Organic electroluminescent devices are currently the mainstream display products used in smart display terminals because of their many advantages such as self-luminescence, high brightness, high contrast, high color gamut, fast response speed, wide viewing angle, low power consumption and flexible display.

[0047] With the popularity of portable devices such as smartphones and tablets, people are paying more and more attention to personal privacy and security while enjoying the convenient life brought by technology. Therefore, in order to prevent information leakage, the development of OLED display screens with anti-peeping functions has become a research hotspot in recent years. Since OLED display products need to have screen sharing display state / anti-peeping display state at the same time, but existing OLED display products with anti-peeping functions usually have shared pixels and anti-peeping pixels arranged in the same layer, and the anti-peeping pixels occupy part of the opening area of ​​normal shared pixels, resulting in the problem of low pixel opening rate. In order to solve the above technical problems, the present application is proposed. In order to better understand the present application, the following is combined with Figures 1 to 5 A display panel and a display device according to embodiments of the present application are described in detail.

[0048] Please also read Figures 1 to 4 The embodiment of the first aspect of the present 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 the first pixel definition layer 300 includes a first pixel defining portion 310 and a first opening 320. The first pixel defining portion 310 encloses 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 away from the substrate 100, and 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 encloses 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 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.

[0049] In the display panel 000 provided in the first aspect of the present 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, and the first pixel definition layer 300 includes a first pixel defining portion 310 and a first opening 320. The first pixel defining portion 310 encloses the first opening 320, and at least one lower light emitting unit 330 is located in the first opening 320 and is used to realize the anti-peeping display state of the display panel 000. The first opening 320 is used to improve the problem of light crosstalk between light emitting units of different colors. The second pixel definition layer 700 is located on the side of the first pixel definition layer 300 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 encloses 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 crosstalk between light emitting units of different colors. The third opening 740 is used to emit the light emitted by the lower light emitting unit 330. 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, and the lower light emitting unit 330 does not occupy the pixel opening area of ​​the upper light emitting unit 730. At the same time, the light emitted by the lower light emitting unit 330 can be emitted from the third opening 740 above. At least part of the side light emitted by the lower light-emitting unit 330 is blocked by the second pixel defining portion 710, reducing the light output viewing angle, so that the display panel 000 is in a narrow viewing angle state for anti-peeping without occupying the pixel opening area for normal display, thereby improving the aperture ratio.

[0050] Optionally, the light emitting colors of the upper light emitting unit 730 and / or the lower light emitting unit 330 may be different to achieve a colored display of the display panel 000. For example, the upper light emitting unit 730 and / or the lower light emitting unit 330 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 an anti-peeping display mode. In the shared display mode, Figure 2As shown, the lower light emitting unit 330 does not emit light, and the upper light emitting unit 730 emits light. In the anti-peeping display mode, as shown in FIG. 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, and the user can use the controller to adjust whether the upper light-emitting unit 730 and the lower light-emitting unit 330 emit light to switch the light-emitting viewing angle, thereby switching the display panel 000 between the shared display mode and the anti-peeping display mode.

[0054] In these optional embodiments, Figure 1 As shown, the upper light emitting unit 730 and the lower light emitting unit 330 are arranged alternately, and 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 third opening 740 above. This allows the forward light emitted by the lower light emitting unit 330 to be emitted from the third opening 740 without being blocked, thereby realizing the display function in the anti-peeping display mode.

[0055] In some optional embodiments, the orthographic projection of the upper light emitting unit 730 on the substrate 100 is located within the orthographic projection of the first pixel defining portion 310 on the substrate 100 .

[0056] In these optional embodiments, the orthographic projection of the upper light-emitting unit 730 on the substrate 100 is located within the orthographic projection of the first pixel defining portion 310 on the substrate 100, so that the orthographic projection of the upper light-emitting unit 730 on the substrate 100 and the orthographic projection of the lower light-emitting unit 330 on 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 defining portion 710 on the substrate 100 is located within the orthographic projection of the first pixel defining portion 310 on the substrate 100, so that the forward light emitted by the lower light-emitting unit 330 can be emitted from the third opening 740 without being blocked by the second pixel defining portion 710, thereby realizing the display function in the anti-peep display mode.

[0058] In some optional 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 optional embodiments, the material of the first pixel definition layer 300 and / or the second pixel definition layer 700 includes a shading material that can improve the problem of light crosstalk between light-emitting units of different colors. 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 output viewing angle and achieving an anti-peeping display.

[0060] In some optional embodiments, a first electrode 800 is disposed on a side of the upper light emitting unit 730 facing away from the substrate 100 .

[0061] In these optional 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 anti-peeping display mode.

[0062] Optionally, the first electrode 800 may be a metal electrode or a transparent electrode. Optionally, the first electrode 800 may be a metal electrode. Optionally, the material of the first electrode 800 may 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 may be a translucent metal material that allows light to pass through to achieve a display function. Optionally, the first electrode 800 may be a transparent electrode, so that the light emitted by the lower light-emitting unit 330 can pass through the first electrode 800 without being blocked, with greater brightness and better display effect.

[0063] Optionally, a second electrode 810 is disposed on one side of the upper light emitting unit 730 close to the substrate 100 , and the second electrode 810 is used to drive the upper light emitting unit 730 to emit light at a portion in contact with the second electrode 810 , 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 can allow 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), zinc tin 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 may be a metal electrode, which may block the light emitted by the lower light-emitting unit 330 and narrow the viewing angle, thereby achieving anti-peeping display.

[0067] In some optional embodiments, the display panel 000 further includes at least one first pixel circuit 210 , and the at least one first pixel circuit 210 is located on a side of the first pixel definition layer 300 away from the second pixel definition layer 700 .

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

[0069] In some optional embodiments, such as Figure 4 and Figure 5 As shown, the display panel 000 further includes a second pixel circuit 610 , which is located on a 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, and 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 by the lower light-emitting unit 330 is not blocked, the brightness is higher, and the display effect is better.

[0071] Optionally, the orthographic projection of the second pixel circuit 610 on the substrate 100 is located within the orthographic projection of the first pixel defining portion 310 on the substrate 100, so that the light emitted by the lower light-emitting unit 330 is not blocked, the brightness is higher, and the display effect is better.

[0072] Optional, such as Figure 5 As shown, the plurality of second pixel circuits 610 may be arranged at intervals, which may improve the problem of local overheating, thereby extending the service life of the display panel 000 .

[0073] In some optional 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 optional embodiments, the first encapsulation layer 400 and the second encapsulation layer 900 can respectively encapsulate the lower light emitting unit 330 and the upper light emitting unit 730 to improve the problem of water vapor intrusion.

[0075] Optionally, the first encapsulation layer 400 and / or the second encapsulation layer 900 may include a first sublayer, a second sublayer and a third sublayer sequentially arranged along a side away from the substrate 100 to encapsulate the display panel 000 and ensure the effectiveness of the encapsulation.

[0076] Optionally, the first sublayer may be an inorganic encapsulation layer, and the inorganic encapsulation layer may be prepared by chemical vapor deposition, which can improve the compactness of the first sublayer, thereby improving the encapsulation effect of the encapsulation layer.

[0077] Optionally, the first encapsulation layer 400 and / or the second encapsulation layer 900 further includes a second sublayer located on the side of the first sublayer 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, and the organic encapsulation layer can be prepared by inkjet printing, so that the encapsulation layer has 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 away from the substrate 100, and the material of the third sublayer includes an inorganic material. That is, the third sublayer is an inorganic encapsulation layer, and further adding an inorganic encapsulation layer outside the organic encapsulation layer can further improve the encapsulation effect of the encapsulation layer.

[0079] Optionally, the material of the first sublayer and the material of the third sublayer may be the same, so that the first sublayer and the third sublayer may be prepared using the same equipment, thereby simplifying the preparation process of the display panel 000 .

[0080] Optionally, a first planarization layer 200 is further included between the first pixel definition layer 300 and the substrate 100, and / or a second planarization layer 600 is 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 layer of the display panel 000 flat for easy 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 second planarization layer 600 further includes a second substrate 500 on the side away from the second pixel definition layer 700, and pixel driving circuits are provided on both the substrate 100 and the second substrate 500. The upper layer pixels and the lower layer pixels can be made separately and then high-precision bonding is performed. Optionally, a filling layer 410 is further included between the first encapsulation layer 400 and the second pixel definition layer 700, and the filling layer 410 can provide protection for the film layer and make the display panel 000 have a suitable thickness. For example, a filling layer 410 can be provided between the second substrate 500 and the first encapsulation layer 400 to provide protection for the film layer of the display panel 000 and to make the display panel 000 have a suitable thickness.

[0083] Optionally, the material of the filling layer 410 may include organic glue, and the organic glue can make the display panel 000 have a suitable thickness.

[0084] Or, in some other optional embodiments, such as Figure 4As shown, an adhesive layer 420 is further 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 frame-bonded. That is, adhesive glue 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 may be a transparent substrate so as not to block the light emitted by the lower light emitting unit 330 , thereby improving the display effect.

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

[0087] In the display device provided in the second aspect of the present application, the display device includes a display panel 000, and the display panel 000 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 the first pixel definition layer 300 includes a first pixel defining portion 310, and the first pixel defining portion 310 encloses a first opening 320 for accommodating at least one lower light emitting unit 330, and the lower light emitting unit 330 is used to realize the anti-peeping display state of the display panel 000, and the first opening 320 is used to improve the problem of light crosstalk between light emitting units of different colors. The second pixel definition layer 700 is located on the side of the first pixel definition layer 300 away from the substrate 100. The second pixel definition layer 700 includes a second pixel defining portion 710. The second pixel defining portion 710 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. 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 crosstalk between light emitting units of different colors. The third opening 740 is used to emit the light emitted by the lower light emitting unit 330. Among them, 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, and the lower light emitting unit 330 does not occupy the pixel opening area of ​​the upper light emitting unit 730. At the same time, the light emitted by the lower light emitting unit 330 can be emitted from the third opening 740 above, thereby improving the aperture ratio.

[0088] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0089] The application can be implemented in other specific forms without departing from its spirit and essential characteristics. For example, the algorithm described in the specific embodiment can be modified, and the system architecture does not depart from the basic spirit of the application. Therefore, the current embodiment is regarded as exemplary and non-restrictive in all aspects, and the scope of the application is defined by the attached claims rather than the above description, and all changes falling within the meaning of the claims and the scope of equivalents are thereby included in the scope of the application.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; A first pixel definition layer, located at one side of the substrate, the first pixel definition layer comprising a first pixel definition portion and a first opening, the first pixel definition portion enclosing the first opening; A lower light emitting unit, at least one of which is located at the first opening; A second pixel definition layer is located on a side of the first pixel definition layer away from the substrate, the second pixel definition layer comprises a second pixel definition portion, a second opening and a third opening, the second pixel definition portion encloses the second opening and the third opening; An upper light emitting unit, at least one of the upper light emitting units is located at the second opening; The orthographic projection of the lower light emitting unit on the substrate and the orthographic projection of the third opening on the substrate at least partially overlap.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the upper light emitting unit on the substrate and the orthographic projection of the first pixel definition layer on the substrate at least partially overlap; Preferably, the orthographic projection of the lower light emitting unit on the substrate is located within the orthographic projection of the third opening on the substrate; Preferably, the display panel includes a shared display mode and an anti-peeping 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 anti-peeping display mode, the lower light-emitting unit emits light, and the upper light-emitting unit does not emit light.

3. The display panel according to claim 2, characterized in that: The orthographic projection of the upper light emitting unit on the substrate is located within the orthographic projection of the first pixel defining portion on the substrate; Preferably, the orthographic projection of the second pixel defining portion on the substrate is located within the orthographic projection of the first pixel defining portion on the substrate.

4. The display panel according to claim 1, characterized in that: The material of the first pixel definition layer and / or the second pixel definition layer includes a light shielding material.

5. The display panel according to claim 1, characterized in that: A first electrode is disposed on a side of the upper light-emitting unit facing away from the substrate; Preferably, the first electrode is a transparent electrode; Preferably, a second electrode is provided on a side of the upper light-emitting unit close to the substrate; Preferably, the material of the first electrode includes at least one of indium tin oxide and indium zinc oxide; Preferably, the material of the second electrode includes at least one of gold, platinum, titanium, silver, and indium tin oxide; Preferably, the second electrode is a metal electrode.

6. The display panel according to claim 1, characterized in that: The display panel further includes at least one first pixel circuit, and the at least one first pixel circuit is located on a side of the first pixel definition layer away from the second pixel definition layer.

7. The display panel according to claim 1, characterized in that: The display panel further includes at least one second pixel circuit, wherein the at least one second pixel circuit is located between the second pixel definition layer and the first pixel definition layer, and an orthographic projection of the second pixel circuit on the substrate does not overlap with an orthographic projection of the third opening on the substrate; Preferably, the orthographic projection of the second pixel circuit on the substrate is located within the orthographic projection of the first pixel defining portion on the substrate; Preferably, a plurality of the second pixel circuits are arranged at intervals.

8. 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 a second encapsulation layer is further included on a side of the second pixel definition layer facing away from the substrate; Preferably, a first planarization layer is further provided between the first pixel definition layer and the substrate, and / or a second planarization layer is further provided between the first encapsulation layer and the second pixel definition layer; Preferably, a filling layer is further included between the first encapsulation layer and the second planarization layer.

9. The display panel according to claim 8, characterized in that: An adhesive layer is further included between the first encapsulation layer and the second pixel definition layer.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 9.

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