CN110600508B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN110600508B CN110600508B CN201910776333.6A CN201910776333A CN110600508B CN 110600508 B CN110600508 B CN 110600508B CN 201910776333 A CN201910776333 A CN 201910776333A CN 110600508 B CN110600508 B CN 110600508B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
Abstract
The application discloses a display panel and a display device, wherein the display panel comprises a substrate, and a pixel definition layer and a light-emitting functional layer which are sequentially arranged on the substrate; the pixel definition layer comprises a light-transmitting area and a display area arranged around the light-transmitting area; the pixel defining layer includes a plurality of pixel openings and a protrusion disposed around each pixel opening; a micro-nano array groove is formed in one side, away from the substrate, of the protruding portion of the light transmission area, and a micro-nano array layer with a light extraction effect is filled in the micro-nano array groove; the light-emitting function layer covers the pixel openings, the protruding portions and the micro-nano array layer. This application is effectual has increased the transmissivity of light in the printing opacity district for the display panel that this application provided can be used for making the display device who takes camera under the screen, and the printing opacity district can guarantee that camera daylighting is sufficient under the screen.
Description
Technical Field
The application relates to the technical field of display panels, in particular to a display panel and a display device.
Background
In recent years, an OLED (Organic Light-Emitting Diode) is considered as the most promising technology in the field of flexible display, and is increasingly applied to practical products. In the using process, consumers have the most intuitive feeling on the proportion of the area of the displayable area of the screen to the area of the whole machine, and the improvement of the screen occupation ratio is also promoted to become one of the most mainstream product design and technology research and development directions in the field of the OLED panel at present. Among them, it is considered one of the ideal design solutions to "bury" the under-screen camera under the OLED panel. For an under-screen camera, the most important characteristic is that external light can be directly incident on a photosensitive unit of the camera. Therefore, each film layer in the panel lighting region directly above the camera must ensure sufficient light transmittance.
In conventional top-emitting OLED panels, the cathode layer is usually a thin translucent metal layer, such as Mg: Ag alloy, etc., in view of the electron injection barrier. For the thin metal layer, the light transmittance of the cathode can be improved to some extent by reducing the thickness of the thin metal layer, but the conductivity of the cathode is reduced sharply. Meanwhile, simply increasing the light transmittance of the cathode also weakens the microcavity effect in the OLED, resulting in deterioration of color purity and luminous efficiency. Therefore, the lighting problem of the under-screen camera needs to be solved on the premise of not influencing the performance of the OLED.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device to solve the technical problem that lighting is difficult when a camera is arranged below the display panel.
The embodiment of the application provides a display panel, which comprises a substrate, and a pixel definition layer and a light-emitting functional layer which are sequentially arranged on the substrate; the pixel definition layer comprises a light-transmitting area and a display area arranged around the light-transmitting area; the pixel definition layer positioned in the light-transmitting area and the display area comprises a plurality of pixel openings and a convex part arranged around each pixel opening; a micro-nano array groove is formed in one side, away from the substrate, of the protruding portion of the light transmission area, and a micro-nano array layer with a light extraction effect is filled in the micro-nano array groove; the light-emitting function layer covers the pixel openings, the protruding portions and the micro-nano array layer.
Optionally, the display panel further comprises a composite cathode; the composite cathode comprises a main electrode and an auxiliary electrode, the main electrode is arranged on the light-emitting functional layer positioned in the pixel openings, and the auxiliary electrode is arranged on the main electrode and the light-emitting functional layer positioned on the bulge part and the micro-nano array layer; wherein the auxiliary electrode is composed of a material having full transmittance.
Optionally, the micro-nano array groove comprises a plurality of micro-nano grooves distributed in an array, and each micro-nano groove is an arc groove.
Optionally, the refractive index of the protruding portion is greater than or equal to the refractive index of the micro-nano array layer.
Optionally, the material of the micro-nano array layer comprises a first organic polymer; the material of the projections comprises a second organic polymer; the second organic polymer has a refractive index greater than or equal to the refractive index of the first organic polymer.
Optionally, the material of the micro-nano array layer further includes first nanoparticles doped in the first organic polymer; the refractive index of the first organic polymer is greater than or equal to the refractive index of the first nanoparticles.
Optionally, the material of the protrusion further comprises a second nanoparticle doped in the second organic polymer; the refractive index of the second nanoparticles is greater than or equal to the refractive index of the second organic polymer.
Optionally, a plurality of secondary micro-nano grooves distributed in an array are arranged on one side, far away from the substrate, of the micro-nano array layer; and secondary micro-nano array layers are filled in the secondary micro-nano grooves, and the refractive index of the secondary micro-nano array layers is smaller than or equal to that of the micro-nano array layers.
Optionally, the material of the micro-nano array layer comprises a first organic polymer and first nanoparticles doped in the first organic polymer; the material of the convex part comprises a second organic polymer and second nano particles doped in the second organic polymer; the material of the secondary micro-nano array layer comprises a third organic polymer; the refractive index of the second nanoparticles is greater than or equal to the refractive index of the first nanoparticles; the refractive index of the first nanoparticles is greater than or equal to the refractive index of the second organic polymer; the refractive index of the second organic polymer is greater than or equal to the refractive index of the first organic polymer; the refractive index of the first organic polymer is greater than or equal to the refractive index of the third organic polymer.
The embodiment of the application further provides a display device, which comprises a camera and the display panel, wherein the camera is located on one side of the pixel definition layer away from the substrate, and the camera corresponds to the light-transmitting area.
The beneficial effect of this application does: for the display panel, the micro-nano array layer with the light extraction (convergence) effect is arranged on the protruding portion of the light transmission area of the pixel definition layer, the micro-nano array layer can effectively reduce reflection and total reflection of light incident to the light transmission area from the outside, the transmissivity of the outside light in the light transmission area is increased, the pixel definition layer is also provided with a pixel opening in the light transmission area, and a light emitting function layer is arranged in the pixel opening, so that the light transmission area can be used for normal display, therefore, the display panel can be used for manufacturing a display device with a camera under a screen on the basis of not influencing the display area and the display effect, and the light transmission area can ensure that the camera under the screen can sufficiently collect light; in addition, the cathode of the display panel adopts a composite cathode consisting of a semi-transparent main electrode and a full-transparent auxiliary electrode, the partial full-transparent auxiliary electrode is arranged corresponding to the micro-nano array layer of the transparent area, the light transmittance of the transparent area is further increased, the external light can enter the micro-nano array layer in a large amount, and sufficient lighting of a camera arranged corresponding to the transparent area in the display device is facilitated.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic partial structure diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a transparent region and a display region of a pixel definition layer according to an embodiment of the present disclosure;
fig. 3 is a schematic partial structure diagram of another display panel provided in an embodiment of the present application;
fig. 4 is a schematic partial structure diagram of another display panel provided in the embodiment of the present application;
fig. 5 is a schematic partial structure diagram of another display panel provided in the embodiment of the present application;
fig. 6 is a schematic partial structure diagram of another display panel provided in the embodiment of the present application;
fig. 7 is a partial schematic view of a display device according to an embodiment of the present disclosure.
Detailed Description
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present application. This application may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, it is to be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The present application is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1 and fig. 2, an embodiment of the present application provides a display panel 1, which includes a substrate 2, and a pixel defining layer 3 and a light emitting function layer 4 sequentially disposed on the substrate 2; the pixel defining layer 3 includes a light-transmitting region 5 and a display region 6 disposed around the light-transmitting region 5; the pixel defining layer 3 located in the light transmitting area 5 and the display area 6 includes a plurality of pixel openings 7 and a convex portion 8 disposed around each pixel opening 7; a micro-nano array groove 9 is formed in one side, away from the substrate 2, of the protruding portion 8 of the light transmitting area 5, and a micro-nano array layer 10 with a light extraction effect is filled in the micro-nano array groove 9; the light emitting function layer 4 covers the plurality of pixel openings 7, the convex portions 8, and the micro-nano array layer 10.
Specifically, the light-emitting functional layer 4 includes a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer, and the light-emitting functional layer 4 may be formed by a thermal evaporation process.
Specifically, the protrusion 8 of the pixel defining layer 3 is used to define a pixel region, the pixel region is a region where the pixel opening 7 is located, the light emitting functional layer 4 is formed in each pixel opening 7, and the display panel 1 further includes an anode and a cathode disposed at two sides of the light emitting functional layer 4.
Specifically, the micro-nano array groove 9 includes a plurality of micro-nano grooves 11 distributed in an array, and each micro-nano groove 11 is an arc-shaped groove, such as a hemispherical groove or a semi-ellipsoidal groove, and the like, which is not limited herein; correspondingly, the micro-nano array layer 10 filled in the micro-nano array groove 9 comprises a plurality of micro-nano structure units 12 distributed in an array, and each micro-nano structure unit 12 is tightly attached to the corresponding micro-nano groove 11, so that the shape of each micro-nano structure unit 12 is consistent with that of the corresponding micro-nano groove 11; the micro-nano array groove 9 is formed by processes such as nano imprinting or photoetching; the micro-nano array layer 10 is formed by ink-jet printing or electrofluid printing and other processes.
Specifically, the display panel 1 may be used in combination with a camera, the camera is disposed on one side of the substrate 2 away from the pixel definition layer 3, and the camera is disposed corresponding to the light-transmitting area 5 and is configured to transmit light through the light-transmitting area 5.
In this embodiment, micro-nano array layer 10 with light extraction (convergence) effect is arranged on protruding portion 8 of light transmission region 5 of pixel definition layer 3, micro-nano array layer 10 can effectively reduce reflection and total reflection of light incident from the outside to light transmission region 5, the transmittance of outside light at light transmission region 5 is increased, and pixel definition layer 3 is also provided with pixel opening 7 in light transmission region 5, be equipped with luminous functional layer 4 in pixel opening 7, make light transmission region 5 also can be used for normal display, therefore, display panel 1 of the embodiment of the application can be used for making the display device with camera under the screen on the basis of not influencing display area and display effect, and light transmission region 5 can guarantee that camera under the screen daylights are sufficient.
In an optional embodiment, the display panel 1 further includes a composite cathode 13; the composite cathode 13 comprises a main electrode 14 and an auxiliary electrode 15, the main electrode 14 is arranged on the light-emitting functional layer 4 positioned in the pixel openings 7, and the auxiliary electrode 15 is arranged on the main electrode 14 and the light-emitting functional layer 4 positioned on the boss 8 and the micro-nano array layer 10; the auxiliary electrode 15 is made of a material having full transparency.
Specifically, the display panel 1 further includes an anode 16 disposed on the substrate 2, the protrusion 8 of the pixel defining layer 3 is disposed around the anode 16 and partially covers the anode 16, and the anode 16 corresponds to the pixel opening 7; a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and an electron injection layer in the light emitting functional layer 4 are sequentially formed on the anode 16; the anode 16, the light-emitting functional layer 4 and the composite cathode 13 constitute a main structure of the organic electroluminescent device for providing a light source to the display panel 1.
Specifically, the main electrode 14 is a discontinuous film covering only the pixel opening 7 region and has semi-transparency, the main electrode 14 includes a single-layer electrode formed by aluminum, magnesium or calcium, or includes an alloy cathode formed by magnesium and silver, the thickness of the alloy cathode includes 0.1 nm to 20 nm, and the main electrode 14 can be prepared by a thermal evaporation process; the auxiliary electrode 15 is a continuous film covering the whole display region 6 and the light-transmitting region 5, and has full light-transmitting property, the material of the auxiliary electrode 15 includes indium tin oxide or aluminum-doped zinc oxide, the thickness of the auxiliary electrode includes 0.1 nm to 20 nm, and the auxiliary electrode 15 can be prepared by atomic layer deposition, pulsed laser deposition, chemical vapor deposition or sputtering, and the like.
In this embodiment, the cathode of the display panel 1 adopts the composite cathode 13 composed of the semi-transparent main electrode 14 and the fully transparent auxiliary electrode 15, and the partially fully transparent auxiliary electrode 15 is disposed corresponding to the micro-nano array layer 10 of the transparent area 5, so as to further increase the light transmittance of the transparent area 5, ensure that a large amount of external light can enter the micro-nano array layer 10, and facilitate sufficient lighting of the camera disposed corresponding to the transparent area 5 in the display device.
In this embodiment, optionally, the refractive index of the protrusion 8 of the pixel defining layer 3 is greater than or equal to the refractive index of the micro-nano array layer 10. Specifically, the material of the micro-nano array layer 10 comprises a first organic polymer; the material of the convex portion 8 of the pixel defining layer 3 includes a second organic polymer; the refractive index of the second organic polymer is greater than or equal to the refractive index of the first organic polymer.
Specifically, the first organic polymer and the second organic polymer include any one of colorless polyimide, acrylic resin, epoxy resin, silicone resin, polydimethylsiloxane, and hexamethyldisiloxane, on the premise that the above requirement of the refractive index is satisfied.
In this embodiment, the difference in refractive index between the micro-nano array layer 10 and the protruding portion 8 of the pixel defining layer 3 reduces the probability of total reflection of external incident light on the arc interface between the micro-nano array layer 10 and the pixel defining layer 3, and increases the transmittance of light.
As shown in fig. 3, an embodiment of the present application further provides a display panel 1, which is different from the foregoing embodiments in that the material of the micro-nano array layer 10 further includes first nanoparticles 17 doped in a first organic polymer; the refractive index of the first organic polymer is greater than or equal to the refractive index of the first nanoparticles 17.
Specifically, the first nanoparticles 17 include low refractive index nanoparticles of silver, copper, or silica, and the diameter thereof includes 1 nm to 300 nm.
In this embodiment, the difference in refractive index between different organic polymers is generally small, for example, the difference in refractive index between a first organic polymer and a second organic polymer is small, and it is difficult to directly find two different organic polymer materials satisfying that the refractive index of the second organic polymer is greater than or equal to the refractive index of the first organic polymer without doping; the embodiment of the application dopes first nanometer particle 17 of low refractive index in first organic polymer, make the average refractive index of receiving array layer 10 a little reduce, and then make the refractive index of receiving array layer 10 a little less than or equal to the refractive index of bellying 8 of pixel definition layer 3, take place the probability of total reflection with the arc interface that reduces external incident light at receiving array layer 10 a little and bellying 8, the transmittance of light at light zone 5 has been increased, make display panel 1 that the embodiment of the application provided can be used for making the display device who takes the camera under the screen, and light zone 5 can guarantee that camera daylighting is sufficient under the screen.
As shown in fig. 4 and 5, the present embodiment further provides a display panel 1, which is different from the above embodiments in that the material of the protrusion portion 8 of the pixel defining layer 3 further includes second nanoparticles 18 doped in a second organic polymer; the refractive index of the second nanoparticles 18 is greater than or equal to the refractive index of the second organic polymer.
Specifically, the second nanoparticles 18 include nanoparticles of high refractive index such as alumina or zirconia, and the diameter thereof includes 1 nm to 300 nm.
In this example, there are two embodiments, for example, as shown in fig. 4, only the second nanoparticles 18 with high refractive index are doped in the second organic polymer, so that the average refractive index of the protrusions 8 of the pixel defining layer 3 is increased, and thus the refractive index of the protrusions 8 of the pixel defining layer 3 is greater than or equal to the refractive index of the micro-nano array layer 10; or, as shown in fig. 5, the second nanoparticles 18 with high refractive index are doped in the second organic polymer, and the first nanoparticles 17 with low refractive index are doped in the first organic polymer, so that the average refractive index of the protrusion 8 of the pixel defining layer 3 is increased, and the average refractive index of the micro-nano array layer 10 is decreased, so that the difference between the refractive indexes of the pixel defining layer 3 and the micro-nano array layer 10 is significant, and the refractive index of the protrusion 8 of the pixel defining layer 3 is greater than or equal to the refractive index of the micro-nano array layer 10; the embodiments shown in fig. 4 and 5 can both reduce the probability of total reflection of external incident light on the arc interface between the micro-nano array layer 10 and the pixel definition layer 3, and increase the transmittance of light in the transparent area 5, so that the display panel 1 provided by the embodiment of the application can be used for manufacturing a display device with a camera under a screen, and the transparent area 5 can ensure sufficient lighting of the camera under the screen.
As shown in fig. 6, an embodiment of the present application further provides a display panel 1, which is different from the foregoing embodiment in that a plurality of secondary micro-nano grooves 19 distributed in an array are formed in a micro-nano array layer 10 on a side away from a substrate 2; and a secondary micro-nano array layer 20 is filled in the plurality of secondary micro-nano grooves 19, and the refractive index of the secondary micro-nano array layer 20 is smaller than or equal to that of the micro-nano array layer 10.
Specifically, the micro-nano array layer 10 is filled in a plurality of micro-nano grooves 11 distributed in an array, a plurality of secondary micro-nano grooves 19 arranged on the micro-nano array layer 10 are arranged corresponding to each micro-nano groove 11, and each secondary micro-nano groove 19 is an arc-shaped groove, such as a hemispherical groove or a semi-ellipsoidal groove, and the like, which is not limited herein.
In this embodiment, the secondary micro-nano array layer 20 has a light extraction (convergence) effect as the micro-nano array layer 10, and the combination of the secondary micro-nano array layer 20 and the micro-nano array layer 10 enables incident light of the light transmission region 5 to pass through the pixel defining layer 3 after being converged twice, thereby further increasing the transmittance of light in the light transmission region 5.
In an optional embodiment, the material of the micro-nano array layer 10 includes a first organic polymer and first nanoparticles 17 doped in the first organic polymer; the material of the convex portion 8 of the pixel defining layer 3 includes a second organic polymer and second nanoparticles 18 doped in the second organic polymer; the material of the secondary micro-nano array layer 20 comprises a third organic polymer; the refractive index of the second nanoparticles 18 is greater than or equal to the refractive index of the first nanoparticles 17; the refractive index of the first nanoparticles 17 is greater than or equal to the refractive index of the second organic polymer; the refractive index of the second organic polymer is greater than or equal to the refractive index of the first organic polymer; the refractive index of the first organic polymer is greater than or equal to the refractive index of the third organic polymer.
Specifically, on the premise that the requirement of the refractive index is satisfied, the first organic polymer, the second organic polymer and the third organic polymer include any one of colorless polyimide, acrylic resin, epoxy resin, silicone resin, polydimethylsiloxane and hexamethyldisiloxane; the first and second nanoparticles 17 and 18 include high refractive index nanoparticles such as aluminum oxide or zirconium dioxide, and the diameters of the first and second nanoparticles 17 and 18 include 1 to 300 nm.
In this embodiment, the second nanoparticles 18 are doped in the second organic polymer, and the first nanoparticles 17 are doped in the first organic polymer, wherein the refractive index of the second nanoparticles 18 is greater than or equal to the refractive index of the first nanoparticles 17, and the refractive index of the second organic polymer is greater than or equal to the refractive index of the first organic polymer, so that the average refractive index of the protrusions 8 of the pixel defining layer 3 is greater than or equal to the average refractive index of the micro-nano array layer 10; the refractive index of the first nanoparticles 17 is greater than or equal to that of the second organic polymer, the refractive index of the second organic polymer is greater than or equal to that of the first organic polymer, and the refractive index of the first organic polymer is greater than or equal to that of the third organic polymer, so that the average refractive index of the micro-nano array layer 10 is greater than or equal to that of the secondary micro-nano array layer 20; thereby make secondary receive array layer 20 a little, receive array layer 10 a little and pixel definition layer 3's 8 the refracting index increase in proper order, receive the arc interface between array layer 20 a little and receive array layer 10 a little respectively with the secondary in order to reduce external incident light, and receive the probability of taking place the total reflection on the arc interface between array layer 10 a little and pixel definition layer 3 a little and the bellying 8, the transmissivity of light at light zone 5 has been increased, make display panel 1 that this application embodiment provided can be used for making the display device who takes the camera under the screen, and light zone 5 can guarantee that the camera daylighting is sufficient under the screen.
As shown in fig. 7, the embodiment of the present application further provides a display device 21, where the display device 21 includes a camera 22 and the display panel 1, the camera 22 is located on a side of the substrate 2 away from the pixel defining layer 3, and the camera 22 is disposed corresponding to the light-transmitting area 5.
In this embodiment, the display device 21 is an under-screen camera 22 type display device 21, and the micro-nano array layer 10 with a light extraction effect is arranged in the light transmission region 5 of the pixel definition layer 3, so that reflection and total reflection of light incident into the light transmission region 5 from the outside can be effectively reduced, the transmittance of the light in the light transmission region 5 is increased, sufficient lighting of the camera 22 is ensured, and the shooting performance of the display device 21 is improved; and, the light-transmitting zone 5 of pixel definition layer 3 still is equipped with luminous functional layer 4 for the transparent zone can be used for normal demonstration, is favorable to realizing the comprehensive screen of camera 22 formula under the screen.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (9)
1. The display panel is characterized by comprising a substrate, a pixel defining layer and a light-emitting functional layer, wherein the pixel defining layer and the light-emitting functional layer are sequentially arranged on the substrate; the pixel definition layer comprises a light-transmitting area and a display area arranged around the light-transmitting area;
the pixel definition layer positioned in the light-transmitting area and the display area comprises a plurality of pixel openings and a convex part arranged around each pixel opening; a micro-nano array groove is formed in one side, away from the substrate, of the protruding portion of the light transmission area, and a micro-nano array layer with a light extraction effect is filled in the micro-nano array groove;
the light-emitting functional layer covers the pixel openings, the protruding parts and the micro-nano array layer;
the refractive index of the protruding portion is larger than that of the micro-nano array layer.
2. The display panel of claim 1, wherein the display panel further comprises a composite cathode; the composite cathode comprises a main electrode and an auxiliary electrode, the main electrode is arranged on the light-emitting functional layer positioned in the pixel openings, and the auxiliary electrode is arranged on the main electrode and the light-emitting functional layer positioned on the bulge part and the micro-nano array layer; wherein the auxiliary electrode is composed of a material having full transmittance.
3. The display panel of claim 1, wherein the micro-nano array groove comprises a plurality of micro-nano grooves distributed in an array, and each micro-nano groove is an arc-shaped groove.
4. The display panel of claim 1, wherein the material of the micro-nano array layer comprises a first organic polymer; the material of the projections comprises a second organic polymer; the second organic polymer has a refractive index greater than that of the first organic polymer.
5. The display panel of claim 4, wherein the material of the micro-nano array layer further comprises first nanoparticles doped in the first organic polymer; the refractive index of the first organic polymer is greater than or equal to the refractive index of the first nanoparticles.
6. The display panel according to claim 4, wherein the material of the protrusion further comprises second nanoparticles doped in the second organic polymer; the refractive index of the second nanoparticles is greater than or equal to the refractive index of the second organic polymer.
7. The display panel of claim 1, wherein the micro-nano array layer is provided with a plurality of secondary micro-nano grooves distributed in an array on one side away from the substrate; and secondary micro-nano array layers are filled in the secondary micro-nano grooves, and the refractive index of the secondary micro-nano array layers is smaller than or equal to that of the micro-nano array layers.
8. The display panel according to claim 7, wherein the material of the micro-nano array layer comprises a first organic polymer and first nanoparticles doped in the first organic polymer; the material of the convex part comprises a second organic polymer and second nano particles doped in the second organic polymer; the material of the secondary micro-nano array layer comprises a third organic polymer;
the refractive index of the second nanoparticles is greater than or equal to the refractive index of the first nanoparticles; the refractive index of the first nanoparticles is greater than or equal to the refractive index of the second organic polymer; the refractive index of the second organic polymer is greater than or equal to the refractive index of the first organic polymer; the refractive index of the first organic polymer is greater than or equal to the refractive index of the third organic polymer.
9. A display device comprising a camera and the display panel according to any one of claims 1 to 8, wherein the camera is located on a side of the substrate away from the pixel defining layer, and the camera is disposed corresponding to the light-transmitting region.
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| CN201910776333.6A CN110600508B (en) | 2019-08-22 | 2019-08-22 | Display panel and display device |
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| CN201910776333.6A CN110600508B (en) | 2019-08-22 | 2019-08-22 | Display panel and display device |
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| CN111261680A (en) * | 2020-01-20 | 2020-06-09 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111724697B (en) * | 2020-05-18 | 2023-01-24 | 明基材料有限公司 | Electroluminescent display device |
| CN111584754B (en) * | 2020-05-27 | 2022-07-12 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
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