A display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a driving substrate, a pixel definition layer and a pixel unit. The pixel definition layer comprises a plurality of first light adjusting parts, which are protrudingly arranged on the driving substrate to form a plurality of pixel accommodating areas. The pixel unit comprises a plurality of sub-pixels, and one sub-pixel is arranged in one pixel accommodating area. The first light adjusting part can shield part of the light beams emitted by the pixel unit in a first transmittance state, so that the remaining part of the light beams of the pixel unit is emitted in a first emission angle range. The first light adjusting part can transmit at least part of the light beams emitted by the pixel unit in a second transmittance state, so that the pixel unit emits the light beams in a second emission angle range. The first emission angle range is smaller than the second emission angle range. Thus, the peep-proof performance and flexibility of the display panel are improved, and the risk of privacy leakage is reduced.

Description

Technical Field

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

[0002] With the continuous development of display technology, the display effects of various display panels are gradually improving. For example, organic light-emitting diode (OLED) display panels and display panels using mini light-emitting diode (Mini-LED) or micro light-emitting diode (Micro-LED) devices are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, and desktop computers due to their advantages such as high image quality, power saving, thin body and wide range of applications, becoming the mainstream in display devices.

[0003] However, current display products have a high risk of privacy leaks and consume a lot of energy when there is no need for viewing from the side. Summary of the Invention

[0004] The main objective of this application is to provide a display panel and display device that address the aforementioned technical problems existing in the prior art.

[0005] To address the aforementioned issues, this application provides a display panel comprising a driving substrate, a pixel definition layer, and pixel units. The pixel definition layer includes a plurality of first light adjustment portions, which protrude from the driving substrate to form a plurality of pixel accommodating regions. Each pixel unit includes a plurality of sub-pixels, with one sub-pixel disposed within a pixel accommodating region. The first light adjustment portions are capable of blocking a portion of the light beam emitted from the pixel unit under a first transmittance state, causing the remaining portion of the light beam from the pixel unit to be emitted within a first emission angle range. The first light adjustment portions are also capable of transmitting at least a portion of the light beam emitted from the pixel unit under a second transmittance state, causing the pixel unit to emit the light beam within a second emission angle range, where the first emission angle range is smaller than the second emission angle range.

[0006] In some embodiments, the pixel definition layer further includes a plurality of second light adjustment sections, one second light adjustment section corresponding to one first light adjustment section, the first light adjustment section covering the respective corresponding second light adjustment section, and the second light adjustment section being used to reflect a portion of the light beam transmitted by the corresponding first light adjustment section in a second transmittance state.

[0007] In some embodiments, the second light adjustment portion includes a main body portion and a reflective layer. The main body portion is disposed on the side of the driving substrate facing the first light adjustment portion, and the reflective layer is located between the main body portion and the first light adjustment portion and covers the main body portion.

[0008] In some embodiments, in the direction from the driving substrate to the pixel definition layer, the size of the sidewall of the first light adjustment portion gradually decreases in the direction parallel to the driving substrate, and the size of the sidewall of the second light adjustment portion gradually decreases in the direction parallel to the driving substrate.

[0009] In some embodiments, the display panel further includes a pixel planarization layer, a first electrode, and a second electrode. The pixel planarization layer is disposed on one side surface of the driving substrate, and a pixel definition layer is disposed on the side of the pixel planarization layer opposite to the driving substrate. The first electrode is disposed in the same layer as the pixel planarization layer, and the second electrode is disposed on the side of the pixel definition layer opposite to the pixel planarization layer. The first electrode and the second electrode are used to adjust the transmittance state of the first light adjustment section.

[0010] In some embodiments, a pixel unit includes a first pixel electrode, a light-emitting layer group, and a second pixel electrode stacked together. The first pixel electrode and the pixel planarization layer are disposed on the surface of the driving substrate in the same layer, and the first pixel electrode and the first electrode are spaced apart.

[0011] In some embodiments, the light-emitting layer group includes a first functional layer, a light-emitting layer and a second functional layer stacked together, wherein the first functional layer is disposed on the side of the first pixel electrode opposite to the driving substrate, and the second pixel electrode is disposed on the side of the second functional layer opposite to the first pixel electrode.

[0012] In some embodiments, the display panel further includes an insulating layer disposed between the second pixel electrode and the second electrode.

[0013] In some embodiments, the first electrode includes a plurality of sub-electrodes, each sub-electrode being disposed corresponding to a first light adjustment unit, and the plurality of sub-electrodes being respectively connected to a plurality of first control lines to receive first control signals and adjust the transmittance state of the corresponding first light adjustment unit according to the first control signals.

[0014] To address the aforementioned problems, this application also provides a display device, which includes the aforementioned display panel.

[0015] Compared with the prior art, the display panel of this application includes a driving substrate, a pixel definition layer, and pixel units. The pixel definition layer includes a plurality of first light adjustment portions, which protrude from the driving substrate to form a plurality of pixel receiving areas. The pixel unit includes a plurality of sub-pixels, with one sub-pixel disposed in one pixel receiving area. The first light adjustment portions can block a portion of the light beam emitted by the pixel unit in a first transmittance state, so that the remaining portion of the light beam from the pixel unit is emitted within a first emission angle range. The first light adjustment portions can also transmit at least a portion of the light beam emitted by the pixel unit in a second transmittance state, so that the pixel unit emits the light beam within a second emission angle range, where the first emission angle range is smaller than the second emission angle range. Through this embodiment, when side viewing is not required, the first light adjustment portions of the pixel definition layer can be in the first transmittance state, thereby blocking a portion of the light beam emitted by the pixel unit, reducing the risk of privacy leakage due to side viewing of the displayed image. When side viewing is required, the first light adjustment portions can be in the second transmittance state, thereby transmitting at least a portion of the light beam emitted by the pixel unit, facilitating sharing of the displayed image. Therefore, the pixel definition layer can form a pixel accommodating area to accommodate pixel units, and can also freely adjust the angle range of the beam emitted by the pixel unit, thereby improving the privacy protection performance and privacy protection flexibility of the display panel and reducing the risk of privacy leakage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a display device according to one or more embodiments of this application;

[0018] Figure 2 This is a schematic diagram of a first structure of a display panel according to one or more embodiments of the present application, where the first light adjustment section of the display panel is in a second transmittance state;

[0019] Figure 3 It is based on Figure 2 The diagram shows the structure of the first light adjustment section of the display panel in a first transmittance state.

[0020] Figure 4 This is a schematic diagram of the second structure of a display panel in a second transmittance state, according to one or more embodiments of this application;

[0021] Figure 5This is a schematic diagram of a third structure of a display panel in a second transmittance state, according to one or more embodiments of this application;

[0022] Figure 6 It is based on Figure 5 The diagram shows the structure of the first light adjustment section of the display panel in a first transmittance state.

[0023] Figure 7 It is based on Figure 5 The diagram shows the structure of the first electrode, pixel definition layer, and second electrode of the display panel.

[0024] Figure 8 This is a first-view schematic diagram of a display panel according to one or more embodiments of this application;

[0025] Figure 9 It is based on Figure 8 The diagram shows a second-view view of the display panel.

[0026] Figure 10 This is a first-view schematic diagram of a display panel according to one or more embodiments of this application;

[0027] Figure 11 It is based on Figure 10 The diagram shows a second-view view of the display panel.

[0028] Figure 12 It is based on Figure 11 The equivalent circuit diagram of the display panel is shown.

[0029] Reference numerals: Display device 1; Display panel 2; Driving substrate 10; Pixel definition layer 20; First light adjustment unit 21; Second light adjustment unit 22; Main body 221; Reflective layer 222; Pixel accommodating area 23; Pixel unit 30; Sub-pixel 31; First pixel electrode 32; Light-emitting layer group 33; First functional layer 331; Light-emitting layer 332; Second functional layer 333; Second pixel electrode 34; Pixel planarization layer 40; First electrode 50; Sub-electrode 51; Second electrode 60; Insulating layer 70; First control line 80; Second control line 90; First emission angle range x1; Second emission angle range x2. Detailed Implementation

[0030] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0032] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0035] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0036] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0037] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0038] With the continuous development of display technology, the display effects of various display panels are gradually improving. For example, organic light-emitting diode (OLED) display panels and display panels using mini light-emitting diode (Mini-LED) or micro light-emitting diode (Micro-LED) devices are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, and desktop computers due to their advantages such as high image quality, power saving, thin body and wide range of applications, becoming the mainstream in display devices.

[0039] However, current display products have a high risk of privacy leaks and consume a lot of energy when there is no need for viewing from the side.

[0040] This application provides a display device, which may include, but is not limited to, mobile phones, tablets, laptops, televisions, desktop computers, terminals, interactive displays, digital audio-visual equipment, IoT devices, etc. Interactive displays may include interactive whiteboards, digital advertising interactive screens, and interactive gaming displays, etc. IoT devices may include smart home devices and smart wearable devices, etc. The display device may include a display panel, which can provide a display interface and touch input to achieve corresponding functions.

[0041] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a display device according to one or more embodiments of this application.

[0042] Display device 1 can be a regular mobile phone, feature phone, or smartphone. A smartphone can be a flat-screen phone, curved-screen phone, or foldable phone, etc. Display device 1 includes a display panel 2, which can be located at the top, middle, or bottom of display device 1. Display panel 2 can be used to display information on display device 1; for example, it can serve as a visual information display section. Display panel 2 can also serve as a touch information input section, allowing users to operate display device 1 by touching it, for example, to meet the display and input needs during interface navigation and function switching. Display device 1 also includes a housing, within which display panel 2 is mounted. The housing protects display panel 2 and reduces the risk of damage from external forces.

[0043] Please refer to Figures 2-3 , Figure 2 This is a schematic diagram of a first structure of a display panel according to one or more embodiments of the present application, where the first light adjustment section of the display panel is in a second transmittance state; Figure 3 It is based on Figure 2 The diagram shows a schematic of the first light adjustment section of the display panel in a first transmittance state.

[0044] To address the aforementioned issues, this application provides a display panel 2, which includes a driving substrate 10, a pixel definition layer 20, and pixel units 30. The pixel definition layer 20 includes a plurality of first light adjustment portions 21, which protrude from the driving substrate 10 to form a plurality of pixel receiving areas 23. The pixel unit 30 includes a plurality of sub-pixels 31, with one sub-pixel 31 disposed in one pixel receiving area 23. The first light adjustment portions 21 can block part of the light beam emitted by the pixel unit 30 under a first transmittance state, so that the remaining part of the light beam emitted by the pixel unit 30 is emitted at a first emission angle range x1. The first light adjustment portions 21 can transmit at least part of the light beam emitted by the pixel unit 30 under a second transmittance state, so that the pixel unit 30 emits the light beam at a second emission angle range x2, where the first emission angle range x1 is smaller than the second emission angle range x2.

[0045] The driving substrate 10 may include a substrate and a driving circuit layer. The substrate may be a glass substrate or a flexible substrate, wherein the flexible substrate is made of polyimide (PI). The driving circuit layer may be a TFT circuit layer, which is used to drive the pixel unit 30 of the OLED. Specifically, the TFT circuit layer includes multiple arrayed driving circuit units, each driving circuit unit may include a thin-film transistor (TFT) device and a capacitor. Each driving circuit unit corresponds to one pixel unit 30. The TFT device is of the low-temperature polysilicon (LTPS) type or the metal-oxide semiconductor (MOS) type, such as indium gallium zinc oxide (IGZO) MOS.

[0046] The pixel definition layer 20 includes a plurality of first light-adjusting portions 21, which protrude from the driving substrate 10 to form a plurality of pixel receiving regions 23. A plurality of sub-pixels 31 of the pixel unit 30 are disposed in the pixel receiving regions 23. The first light-adjusting portions 21 can surround the opening where the exposed pixel unit 30 is formed to form the pixel receiving region 23 and define the position of the sub-pixels 31. Thus, the pixel definition layer 20 can define the position of the pixel unit 30, allowing the pixel unit 30 to be positioned appropriately. The material of the first light-adjusting portions 21 can be an electrochromic material, which is a transparent material with reversible transmittance changes under an electric field, where transmittance increases or decreases when an electric current is applied. Examples include, but are not limited to, tungsten trioxide, violet derivatives, and PDLC (polymer-dispersed liquid crystal). The first light adjustment unit 21 can block part of the light beam emitted from the pixel unit 30 in a first transmittance state, so that the remaining part of the light beam from the pixel unit 30 is emitted at a first emission angle range x1. The first light adjustment unit 21 can also transmit at least part of the light beam emitted from the pixel unit 30 in a second transmittance state, so that the pixel unit 30 emits the light beam at a second emission angle range x2, where the first emission angle range x1 is smaller than the second emission angle range x2. It can be understood that the first light adjustment unit 21 can be configured to be in the first transmittance state when energized and in the second transmittance state when not energized, or it can be configured to be in the second transmittance state when energized and in the first transmittance state when not energized. For example, taking the first light adjustment unit 21 as being in a second transmittance state when powered on and a first transmittance state when not powered on as an example, the light transmittance of the first light adjustment unit 21 in the first transmittance state is lower than that in the second transmittance state. When the first light adjustment unit 21 is not powered on, it is in the first transmittance state, blocking part of the light beam emitted by the pixel unit 30, such as a side beam, so that the remaining part of the light beam from the pixel unit 30 is emitted with a smaller first emission angle range x1. When the second light adjustment unit 22 is powered on, it is in the second transmittance state, and the light beam emitted by the pixel unit 30 can be transmitted through the first light adjustment unit 21, so that the pixel unit 30 is emitted with a larger second emission angle range x2. It can be understood that when the first light adjustment unit 21 is in the first transmittance state, if the observer is located in the area between the second emission angle range x2 and the first emission angle range x1, it is difficult to clearly observe the image displayed on the display panel 2.

[0047] Through the above implementation, when side viewing is not required, the first light adjustment section 21 of the pixel definition layer 20 can be in a first transmittance state, thereby blocking part of the light beam emitted by the pixel unit 30, reducing the risk of privacy leakage caused by side viewing of the screen displayed on the display panel 2. When side viewing is required, the first light adjustment section 21 can be in a second transmittance state, thereby transmitting at least part of the light beam emitted by the pixel unit 30, facilitating sharing of the screen displayed on the display panel 2. Thus, the pixel definition layer 20 can form a pixel receiving area 23 to accommodate the pixel unit 30, and can also freely adjust the angle range of the light beam emitted by the pixel unit 30, thereby improving the privacy protection performance and flexibility of the display panel 2 and reducing the risk of privacy leakage.

[0048] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the second structure of a display panel with its first light adjustment section in a second transmittance state, according to one or more embodiments of this application.

[0049] In some embodiments, the pixel definition layer 20 further includes a plurality of second light adjustment sections 22, each second light adjustment section 22 corresponding to a first light adjustment section 21. The first light adjustment section 21 covers its respective second light adjustment section 22, and the second light adjustment section 22 is used to reflect a portion of the light beam transmitted by the corresponding first light adjustment section 21 when it is in a second transmittance state. The material of the second light adjustment section 22 can be an organic material, an organic material with an inorganic coating, or an inorganic material. The organic material of the second light adjustment section 22 includes, but is not limited to, polyimide. The inorganic material of the second light adjustment section 22 includes, but is not limited to, silicon oxide (SiO2), silicon nitride (Si3N4), silicon oxynitride (Si2N2O), magnesium fluoride (MgF2), or combinations thereof. When the first light adjustment section 21 is in a second transmittance state, the second light adjustment section 22 can reflect a portion of the light beam transmitted through the first light adjustment section 21. For example, the second light adjustment section 22 can reflect the lateral light beam emitted by the pixel unit 30 to the front direction of the display panel 2. Therefore, the second light adjustment unit 22 can reflect at least part of the light beam emitted by the pixel unit 30 when the first light adjustment unit 21 is in the second transmittance state, thereby improving the light extraction rate and brightness of the display panel 2.

[0050] Please refer to Figures 5-7 , Figure 5 This is a schematic diagram of a third structure of a display panel in a second transmittance state, according to one or more embodiments of this application; Figure 6 It is based on Figure 5 The diagram shows the structure of the first light adjustment section of the display panel in a first transmittance state. Figure 7 It is based on Figure 5The diagram shows the structure of the first electrode, pixel definition layer, and second electrode of the display panel.

[0051] In some embodiments, the second light adjustment unit 22 includes a main body 221 and a reflective layer 222. The main body 221 is disposed on the side of the driving substrate 10 facing the first light adjustment unit 21, and the reflective layer 222 is located between the main body 221 and the first light adjustment unit 21, covering the main body 221. It is understood that at least a portion of the light beam transmitted by the first light adjustment unit 21 is transmitted to the reflective layer 222 and can be reflected by the reflective layer 222. The reflective layer 222 can be made of a mirror material with high light reflectivity and is coated on the surface of the main body 221 by means of vapor deposition or the like. Thus, the main body 221 can provide fixation and support for the reflective layer 222, and the reflective layer 222 can further improve the reflection effect of the second light adjustment unit 22.

[0052] In some embodiments, in the direction from the driving substrate 10 to the pixel definition layer 20, the size of the sidewall of the first light adjustment section 21 gradually decreases in the direction parallel to the driving substrate 10, and the size of the sidewall of the second light adjustment section 22 gradually decreases in the direction parallel to the driving substrate 10. In some applications, the shapes of the second light adjustment section 22 and the first light adjustment section 21 can be similar or substantially the same, such as both being trapezoidal. This facilitates the first light adjustment section 21 surrounding a pixel receiving area 23 with a sufficiently large opening, thereby facilitating the accommodating of the pixel unit 30. Simultaneously, it facilitates adjusting the reflection angle of the second light adjustment section 22 so that it reflects the received light beam to the front of the display panel 2, further improving the reflection effect of the second light adjustment section 22.

[0053] In some embodiments, the display panel 2 further includes a pixel planarization layer 40, a first electrode 50, and a second electrode 60. The pixel planarization layer 40 is disposed on one side surface of the driving substrate 10, and the pixel definition layer 20 is disposed on the side of the pixel planarization layer 40 facing away from the driving substrate 10. The first electrode 50 is disposed in the same layer as the pixel planarization layer 40, and the second electrode 60 is disposed on the side of the pixel definition layer 20 facing away from the pixel planarization layer 40. The first electrode 50 and the second electrode 60 are used to adjust the transmittance state of the first light adjustment unit 21. The pixel planarization layer 40 may be located between the driving substrate 10 and the pixel definition layer 20, and between the driving substrate 10 and the pixel unit 30. The first electrode 50 may be one of an anode electrode and a cathode electrode, and the second electrode 60 may be the other of an anode electrode and a cathode electrode. For example, in some application scenarios, the first electrode 50 is an anode electrode, and the second electrode 60 is a cathode electrode. The first electrode 50 is disposed on the same layer as the pixel planarization layer 40, and the second electrode 60 is disposed on the side of the pixel definition layer 20 opposite to the pixel planarization layer 40. It can be understood that the second electrode 60 can be disposed on the surface of the pixel definition layer 20 on the side opposite to the pixel planarization layer 40 and in direct contact with the pixel definition layer 20. The cooperation of the first electrode 50 and the second electrode 60 allows the first light adjustment unit 21 to be energized or de-energized, thereby adjusting the transmittance state of the first light adjustment unit 21.

[0054] In some embodiments, the pixel unit 30 includes a first pixel electrode 32, a light-emitting layer group 33, and a second pixel electrode 34 stacked together. The first pixel electrode 32 is disposed on the surface of the driving substrate 10 in the same layer as the pixel planarization layer 40, and the first pixel electrode 32 is spaced apart from the first electrode 50. The first pixel electrode 32 may be one of an anode pixel electrode and a cathode pixel electrode, and the second pixel electrode 34 may be the other of an anode pixel electrode and a cathode pixel electrode. For example, the first pixel electrode 32 is an anode pixel electrode, and the second pixel electrode 34 is a cathode pixel electrode. The first pixel electrode 32 and the first electrode 50 are disposed in the same layer and spaced apart, which helps to reduce the thickness of the display panel 2 and reduces the risk of short circuit between the first pixel electrode 32 and the first electrode 50. The light-emitting layer group 33 is located between the first pixel electrode 32 and the second pixel electrode 34, and the light-emitting layer group 33 can emit light under the drive of the first pixel electrode 32 and the second pixel electrode 34. It is understandable that the overall thickness of the pixel unit 30 is less than the thickness of the pixel definition layer 20, and the second pixel electrode 34 can partially contact the sidewall of the first light adjustment part 21. In some application scenarios, the surface of the first light adjustment part 21 is also covered with an insulating material, thereby making the first light adjustment part 21 and the second pixel electrode 34 insulated and isolated.

[0055] In some embodiments, the light-emitting layer group 33 includes a first functional layer 331, a light-emitting layer 332, and a second functional layer 333 stacked together. The first functional layer 331 is disposed on the side of the first pixel electrode 32 facing away from the driving substrate 10, and the second pixel electrode 34 is disposed on the side of the second functional layer 333 facing away from the first pixel electrode 32. The first functional layer 331 and the second functional layer 333 may include one or more of HIL (Hole Injection Layer), HTL (Hole Transfer Layer), HBL (Hole Blocking Layer), ETL (Electron Transfer Layer), and EIL (Electron Injection Layer). The light-emitting layer 332 can emit a light beam, and the light-emitting colors of the light-emitting layers 332 of multiple sub-pixels 31 can be different. For example, the light-emitting color of the light-emitting layer 332 of some sub-pixels 31 is red, the light-emitting color of the light-emitting layer 332 of some sub-pixels 31 is green, and the light-emitting color of the light-emitting layer 332 of some sub-pixels 31 is blue. It should be noted that the color of the light emitted by the light-emitting layer 332 is not limited to red, green, or blue; it can also be yellow or other colors, and there are no restrictions here.

[0056] In some embodiments, the display panel 2 further includes an insulating layer 70 disposed between the second pixel electrode 34 and the second electrode 60. Exemplarily, the second electrode 60 is a cathode electrode, the second pixel electrode 34 is a cathode pixel electrode, and the insulating layer 70 is disposed between the cathode electrode and the cathode pixel electrode, thereby providing insulation between the cathode electrode and the cathode pixel electrode. At least a portion of the insulating layer 70 can contact the first light adjustment portion 21, thereby further improving the insulation effect. The insulating layer 70 can be a single-layer insulating material; in some applications, the insulating layer 70 can be composed of multiple layers of composite insulating material, thereby reducing the risk of the insulating layer 70 breaking down and short-circuiting due to an excessive potential difference between the second electrode 60 and the second pixel electrode 34.

[0057] Please refer to Figures 8-9 , Figure 8 This is a first-view schematic diagram of a display panel according to one or more embodiments of this application; Figure 9 It is based on Figure 8 The diagram shows a second-view view of the display panel.

[0058] In some embodiments, the first electrode 50 is an anode electrode, and is a full-surface anode electrode, and the second electrode 60 is a cathode electrode, and is a full-surface cathode electrode. Multiple first light adjustment units 21 are respectively connected to the full-surface anode and full-surface cathode electrodes. It is understood that when the full-surface anode and full-surface cathode electrodes are energized, the multiple first light adjustment units 21 are simultaneously energized and simultaneously in either a first transmittance state or a second transmittance state.

[0059] Please refer to Figures 10-12 , Figure 10 This is a first-view schematic diagram of a display panel according to one or more embodiments of this application; Figure 11 It is based on Figure 10 The diagram shows a second-view view of the display panel. Figure 12 It is based on Figure 11 The equivalent circuit diagram of the display panel is shown.

[0060] In some embodiments, the first electrode 50 includes a plurality of sub-electrodes 51, each sub-electrode 51 corresponding to a first light adjustment unit 21. The plurality of sub-electrodes 51 are respectively connected to a plurality of first control lines 80 to receive first control signals and adjust the transmittance state of the corresponding first light adjustment unit 21 according to the first control signals. Taking the first electrode 50 as an anode electrode as an example, the anode electrode may include a plurality of anode sub-electrodes, each anode sub-electrode corresponding to a first light adjustment unit 21. Each anode sub-electrode is respectively connected to a first control line 80. The anode sub-electrode can receive the first control signal through the first control line 80. When the anode sub-electrode receives the first control signal, the corresponding first light adjustment unit 21 is in an energized state; the first light adjustment unit 21 corresponding to the anode sub-electrode that has not received the first control signal is in an unenergized state. Thus, in some application scenarios, some of the plurality of first light adjustment units 21 can be in a first transmittance state, while the remaining first light adjustment units 21 can simultaneously be in a second transmittance state. In some other embodiments, multiple sub-electrodes 51 are also connected to a second control line 90. The second control line 90 can be used to transmit a second control signal. One second control line 90 can be connected to multiple sub-electrodes 51. If a sub-electrode 51 receives both the first control signal and the second control signal at the same time, it is in an energized state. If it receives only one of the first control signal and the second control signal or neither of them is received, it is in an unenergized state.

[0061] In summary, the display panel 2 of this application includes a driving substrate 10, a pixel definition layer 20, and pixel units 30. The pixel definition layer 20 includes a plurality of first light adjustment portions 21, which protrude from the driving substrate 10 to form a plurality of pixel receiving areas 23. The pixel unit 30 includes a plurality of sub-pixels 31, with one sub-pixel 31 disposed in one pixel receiving area 23. The first light adjustment portions 21 can block part of the light beam emitted by the pixel unit 30 in a first transmittance state, so that the remaining part of the light beam emitted by the pixel unit 30 is emitted at a first emission angle range x1. The first light adjustment portions 21 can transmit at least part of the light beam emitted by the pixel unit 30 in a second transmittance state, so that the pixel unit 30 emits the light beam at a second emission angle range x2. The first emission angle range x1 is smaller than the second emission angle range x2. Through the above embodiments, when side viewing is not required, the first light adjustment section 21 of the pixel definition layer 20 can be in a first transmittance state, thereby blocking part of the light beam emitted by the pixel unit 30, reducing the risk of privacy leakage caused by side viewing of the screen displayed on the display panel 2. When side viewing is required, the first light adjustment section 21 can be in a second transmittance state, thereby transmitting at least part of the light beam emitted by the pixel unit 30, facilitating sharing of the screen displayed on the display panel 2. Thus, the pixel definition layer 20 can form a pixel receiving area 23 to accommodate the pixel unit 30, while also freely adjusting the angle range of the light beam emitted by the pixel unit 30, thereby improving the privacy protection performance and flexibility of the display panel 2 and reducing the risk of privacy leakage. Compared with other display panels, the display panel 2 provided in this application has better privacy protection and greater flexibility.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized by, The display panel includes: Drive substrate; A pixel definition layer includes a plurality of first light adjustment portions, which protrude from the driving substrate to form a plurality of pixel receiving areas; A pixel unit includes a plurality of sub-pixels, and one of the sub-pixels is disposed in one of the pixel accommodating regions; Wherein, the first light adjustment unit can block part of the light beam emitted by the pixel unit under a first transmittance state, so that the remaining part of the light beam emitted by the pixel unit is emitted within a first emission angle range. The first light adjustment unit can transmit at least part of the light beam emitted by the pixel unit under a second transmittance state, so that the pixel unit emits the light beam within a second emission angle range. The first emission angle range is smaller than the second emission angle range. The pixel definition layer further includes a plurality of second light adjustment units, one second light adjustment unit corresponds to one first light adjustment unit, the first light adjustment unit covers its respective corresponding second light adjustment unit, and the second light adjustment unit is used to reflect part of the light beam transmitted by the corresponding first light adjustment unit when it is in a second transmittance state. The second light adjustment unit includes a main body and a reflective layer. The main body is disposed on the side of the driving substrate facing the first light adjustment unit, and the reflective layer is located between the main body and the first light adjustment unit and covers the main body. In the direction from the driving substrate to the pixel definition layer, the size of the sidewall of the first light adjustment part gradually decreases in the direction parallel to the driving substrate, and the size of the sidewall of the second light adjustment part gradually decreases in the direction parallel to the driving substrate.

2. The display panel according to claim 1, characterized in that, The display panel further includes a pixel planarization layer, a first electrode, and a second electrode. The pixel planarization layer is disposed on one side surface of the driving substrate, and the pixel definition layer is disposed on the side of the pixel planarization layer opposite to the driving substrate. The first electrode is disposed in the same layer as the pixel planarization layer, and the second electrode is disposed on the side of the pixel definition layer opposite to the pixel planarization layer. The first electrode and the second electrode are used to adjust the transmittance state of the first light adjustment section.

3. The display panel according to claim 2, characterized in that, The pixel unit includes a first pixel electrode, a light-emitting layer group, and a second pixel electrode stacked together. The first pixel electrode and the pixel planarization layer are disposed on the surface of the driving substrate in the same layer, and the first pixel electrode and the first electrode are spaced apart.

4. The display panel according to claim 3, characterized in that, The light-emitting layer group includes a first functional layer, a light-emitting layer and a second functional layer stacked together. The first functional layer is disposed on the side of the first pixel electrode away from the driving substrate, and the second pixel electrode is disposed on the side of the second functional layer away from the first pixel electrode.

5. The display panel according to claim 4, characterized in that, The display panel further includes an insulating layer disposed between the second pixel electrode and the second electrode.

6. The display panel according to claim 2, characterized in that, The first electrode includes multiple sub-electrodes, each sub-electrode is correspondingly disposed with a first light adjustment unit, and the multiple sub-electrodes are respectively connected to multiple first control lines to receive first control signals and adjust the transmittance state of the corresponding first light adjustment unit according to the first control signals.

7. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1-6.

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