CN113178467B - Display panel and display device - Google Patents
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- CN113178467B CN113178467B CN202110397446.2A CN202110397446A CN113178467B CN 113178467 B CN113178467 B CN 113178467B CN 202110397446 A CN202110397446 A CN 202110397446A CN 113178467 B CN113178467 B CN 113178467B
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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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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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
Abstract
The embodiment of the application discloses a display panel and a display device, wherein a display area of the display panel is provided with a camera shooting area and a non-camera shooting area, and an optical coupling layer is arranged on the light emergent side of the display panel in the display area; the thickness of the light coupling layer in the image pickup area is larger than that of the light coupling layer in the non-image pickup area, so that the brightness attenuation of the display area is consistent. The display panel and the display device can relieve the brightness attenuation difference between the non-shooting area and the shooting area, and the visual angle difference is reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
The screen-down shooting technology is a major technical hotspot for future mobile phone display. The technology of shooting under a screen is that a camera is hidden under a certain area of a display screen (hereinafter, the area is referred to as a shooting area), when there is no shooting requirement, the shooting area displays normally, when there is a shooting requirement, the shooting area serves as a transparent area, and a non-shooting area (an area of the display screen except the shooting area) can display normally. The realization of the technology can greatly improve the screen occupation ratio, but has great technical problems at the same time.
For example, in order to realize the under-screen image pickup technology, there is a difference in pixel design of an image pickup area and a non-image pickup area. Such differences often result in variations in the viewing angle characteristics of the screen. For example, at different viewing angles, the luminance attenuation of the image pickup area and the non-image pickup area is different, which affects the sensory experience.
Fig. 1 is a luminance decay curve of an image pickup area and a non-image pickup area of a conventional display panel, in which a curve M corresponds to the non-image pickup area and a curve N corresponds to the image pickup area. As shown in fig. 1, the luminance decay rate of the image pickup area is significantly smaller than that of the non-image pickup area, which directly affects the entire display effect. Therefore, how to reduce the visual angle difference between the camera shooting area and the non-camera shooting area and improve the sensory experience is an urgent problem to be solved in the display technology under the screen.
In the course of research and practice on the prior art, the inventors of the present application have found a display panel and a display device to solve the above technical problems.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, which can relieve the brightness attenuation difference between a non-camera area and a camera area, reduce the visual angle difference and improve the sensory experience; in addition, the display panel and the display device can overcome the position limitation of the camera shooting area, and the camera shooting area is arranged at any position of the screen.
The application provides a display panel, which is provided with a display area, wherein the display area is provided with a camera shooting area and a non-camera shooting area, and a light coupling layer is arranged on the light emergent side of the display panel in the display area; the thickness of the light coupling layer in the image pickup area is larger than that of the light coupling layer in the non-image pickup area, so that the brightness attenuation of the display area is consistent.
Optionally, in some embodiments of the present application, the thickness of the light coupling layer is in a range from 60nm to 100 nm.
Optionally, in some embodiments of the application, a thickness of the light coupling layer in the imaging area is 1.2 times a thickness of the light coupling layer in the non-imaging area.
The thickness of the optical coupling layer in the image pickup area is 72 nm-96 nm, and the thickness of the optical coupling layer in the non-image pickup area is 60 nm-80 nm.
Optionally, in some embodiments of the present application, in the display area, the display panel includes: a substrate; and a light emitting device layer disposed on the substrate; the light coupling layer is arranged on one side, far away from the substrate, of the light emitting device layer; wherein a luminance decay rate of the light emitting device layer in the non-image pickup region is greater than a luminance decay rate of the light emitting device layer in the image pickup region, and the light coupling layer and the light emitting device layer cooperate to make luminance decay of the display region uniform.
Optionally, in some embodiments of the present application, the light emitting device layer includes: a first electrode layer disposed between the substrate and the light coupling layer; a light emitting layer disposed between the first electrode layer and the light coupling layer; and a second electrode layer disposed between the light emitting layer and the light coupling layer; light emitted by the light emitting layer is emitted through the second electrode layer and the light coupling layer.
Optionally, in some embodiments of the present application, the non-imaging region surrounds the imaging region.
Correspondingly, the application provides a display device, which comprises the display panel.
Optionally, in some embodiments of the present application, the display device further includes a camera under the screen, the camera under the screen is disposed on a non-light-emitting side of the display panel, and the camera under the screen is located in the camera area.
This application display panel and display device carry out the thickness differentiation through the optical coupling layer with the optical coupling layer in non-camera shooting district and the optical coupling layer in camera shooting district and set up to can alleviate the luminance decay difference of light emitting device layer in non-camera shooting district and camera shooting district, reduce non-camera shooting district and camera shooting district visual angle difference.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a luminance decay curve of a camera area and a non-camera area of a conventional display panel, where a curve M is the non-camera area and a curve N is the camera area;
FIG. 2 is a front plan view of a display panel according to the present application;
FIG. 3 is a schematic diagram of a film structure of the display panel shown in FIG. 2;
FIG. 4 is a diagram showing a comparison of the structures of the display panel in FIG. 2 in the image capture area and the non-image capture area, wherein the left-side structure diagram shows the non-image capture area and the right-side structure diagram shows the image capture area;
fig. 5 is a luminance decay curve of light coupling layers with different thicknesses, wherein the thickness of the light coupling layer corresponding to curve a is smaller than that of the light coupling layer corresponding to curve B.
Fig. 6 is a luminance decay curve of the optical coupling layer of the present application, in which curve C corresponds to a non-image pickup region and curve D corresponds to an image pickup region;
fig. 7 is a schematic structural diagram of a display device according to the present application.
Description of reference numerals:
100 display panel 101 non-image pickup area
102 imaging area 10 substrate
20 light emitting device layer 30 optical coupling layer
21 first electrode layer 22 light emitting layer
23 second electrode layer 200 under-screen camera
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application provides a display panel and a display device. The following are detailed descriptions. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
Fig. 2 is a front plan view of a display panel according to an embodiment of the present disclosure, fig. 3 is a schematic diagram of a film structure of the display panel in fig. 2, and fig. 4 is a diagram comparing structures of the display panel in the image pickup area and the non-image pickup area in fig. 2. Fig. 2 mainly shows a planar positional relationship between an image pickup region 102 and a non-image pickup region 101 in the display panel 100, fig. 3 mainly shows a film structure of the display panel 100 in fig. 2, and fig. 4 mainly shows a difference between the film structures of the display panel 100 in the image pickup region 102 and the non-image pickup region 101.
As shown in fig. 2, an embodiment of the present application provides a display panel 100, where the display panel 100 includes a display area, and the display area includes a non-imaging area 101 and an imaging area 102.
In the display area, a light coupling layer 30 is disposed on the light exit side of the display panel 100, wherein the thickness of the light coupling layer 30 in the image pickup area 102 is greater than that of the light coupling layer 30 in the non-image pickup area 101, so that the brightness attenuation of the display area is uniform.
Referring to fig. 3, the optical coupling layer 30 in the non-imaging area 101 has a first thickness L1, the optical coupling layer 30 in the imaging area 102 has a second thickness L2, and the second thickness L2 is greater than the first thickness L1, so that the brightness decay rates of the display areas are uniform.
Specifically, since the luminance decay rate of the display panel 100 in the non-imaging region 101 is greater than the luminance decay rate of the display panel 100 in the imaging region 102, the light coupling layer 30 is configured to correct the luminance decay difference of the display panel 100 in the non-imaging region 101 and the imaging region 102.
For example, in order to realize the off-screen imaging technology, the pixel design of the imaging region 102 and the pixel design of the non-imaging region 101 are different. Such differences may be present in terms of pixel density, light emitting devices or pixel driving circuits, etc.
Referring to fig. 1, it is obvious that the difference in pixel design causes the non-image-pickup region 101 to decay faster than the brightness in the image-pickup region 102, thereby causing the display brightness and the display viewing angle of the display region to be inconsistent.
Please refer to fig. 5, in which the thickness of the light coupling layer corresponding to curve a is smaller than the thickness of the light coupling layer corresponding to curve B. Comparing curve a and curve B, it can be seen that when the same light passes through the light coupling layers with different thicknesses, the light coupling layer with a smaller thickness can slow down the brightness decay rate of the light passing through compared with the light coupling layer with a larger thickness. That is, reducing the thickness of the light coupling layer can reduce the attenuation speed of the light coupling layer to light.
Based on this, the present invention provides the optical coupling layer 30 in the imaging region 102 and the optical coupling layer 30 in the non-imaging region 101 with different thicknesses, and corrects the difference in the luminance attenuation speeds between the imaging region 102 and the non-imaging region 101 by using the luminance attenuation difference of the light due to the thickness of the optical coupling layer 30.
Referring to fig. 1 and 6, in the present application, the thickness of the optical coupling layer 30 in the image capturing region 102 is greater than the thickness of the optical coupling layer 30 in the non-image capturing region 101, even if the second thickness L2 is greater than the first thickness L1, the difference between the luminance attenuation of the non-image capturing region 101 and the luminance attenuation of the image capturing region 102 is not significantly different, and the difference between the viewing angles of the two regions is reduced, so that the display panel 100 can obtain a better display effect.
Therefore, by setting the thickness of the optical coupling layer 30 in the image pickup region 102 to be larger than the thickness of the optical coupling layer 30 in the non-image pickup region 101, even if the second thickness L2 is larger than the first thickness L1, the attenuation effect of the optical coupling layer 30 in the image pickup region 102 on light can be made larger than the attenuation effect of the optical coupling layer 30 in the non-image pickup region 101 on light, and the attenuation speed of the non-image pickup region 101, which is originally attenuated relatively fast, can be slowed down, so that the difference in attenuation speed between the non-image pickup region 101 and the image pickup region 102 can be alleviated or even completely solved.
More specifically, in the display panel 100 of the present application, since the luminance decay rate of the light emitting device layer 20 in the non-image pickup region 101 is greater than the luminance decay rate of the light emitting device layer 20 in the image pickup region 102, the light coupling layer 30 can correct the difference in luminance decay rates of the light emitting device layers 20 in the image pickup region 102 and the non-image pickup region 101, so that the luminance decay is uniform over the entire display region.
So far, in the scheme of this application, through carrying out differentiation design to the thickness of optical coupling layer 30, can equalize display panel 100 is in the district 102 of making a video recording and the luminance decay speed difference of non-district 101 of making a video recording, improves because the relatively poor visual angle that luminance decay difference caused is experienced, promotes to watch and experiences.
In a preferred embodiment, the non-image-pickup region 101 surrounds the image-pickup region 102. The non-image pickup region 101 surrounds the image pickup region 102 as viewed from the front view direction of the display panel 100.
Further, since the display panel 100 of the present application can overcome the difference in display luminance and display viewing angle between the image pickup region 102 and the non-image pickup region 101, the position of the image pickup region 102 with respect to the non-image pickup region 101 is not limited. In other words, the imaging region 102 can be disposed at any position of the display region. For example, referring to fig. 2, in the present embodiment, the image capturing area 102 is disposed at the upper left corner of the non-image capturing area 101. In other embodiments, the image pickup region 102 may also be disposed at the upper right corner or the bottom of the non-image pickup region 101.
The type of the display panel 100 is not limited, and it may be an OLED (Organic Light-Emitting Diode) or a Quantum Dot electroluminescent (QLED) display panel.
The film layers and the structure of the display panel 100 of the present application will be described in detail with reference to fig. 3 and 4.
Referring to fig. 3 and 4, in the display region, the display panel 100 includes a substrate 10 and a light emitting device layer 20 disposed on the substrate 10.
The main purpose of fig. 3 and 4 is to highlight the film structure of the display panel 100 in the image-capturing region 102 and the non-image-capturing region 101, and therefore, the specific structure of the substrate 10 is not specifically shown, and only the substrate 10 is briefly described below.
In some embodiments, the substrate 10 may be an array substrate. At this time, the base plate 10 may include a base substrate and a driving circuit layer disposed on the base substrate.
The substrate base plate can be a rigid substrate such as glass, transparent resin and the like, and can also be a flexible substrate such as polyimide, polycarbonate, polyether sulfone, polyethylene terephthalate, polyethylene naphthalate, polyarylate or glass fiber reinforced plastic and the like.
The driving circuit layer includes a plurality of insulating layers, and a metal layer and a semiconductor layer stacked between the insulating layers. The multiple metal layers and the semiconductor layer jointly form a plurality of thin film transistors and metal wirings.
Wherein the multi-layer insulating layer comprises a buffer layer, a gate insulating layer, an interlayer insulating layer, a planarization layer or a pixel defining layer. In other embodiments, the multilayer insulating layer may further include a spacer layer.
The multilayer metal layer comprises a gate metal layer and a source drain metal layer, and in other embodiments, the multilayer metal layer may further comprise a pixel electrode layer or a metal light shielding layer.
The material of the semiconductor layer may be an oxide semiconductor such as Indium Gallium Zinc Oxide (IGZO), Zinc Tin Oxide (ZTO), Indium Tin Zinc Oxide (ITZO), and/or the like.
As shown in fig. 3, the light emitting device layer 20 is disposed on the substrate 10. In this embodiment, the light emitting device layer 20 is disposed on a side of the driving circuit layer away from the substrate.
Referring to fig. 4, the light emitting device layer 20 includes a first electrode layer 21, a light emitting layer 22, and a second electrode layer 23. The first electrode layer 21, the light-emitting layer 22, and the second electrode layer 23 are sequentially stacked on the substrate 10 in a thickness direction of the display panel 100.
Referring to fig. 3 and 4, the first electrode layer 21 is disposed on the substrate 10. In this embodiment, the first electrode layer 21 is disposed on the driving circuit layer, and the first electrode layer 21 is patterned with a plurality of first electrodes, and the first electrodes are electrically connected to the thin film transistors in the driving circuit respectively.
Specifically, the first electrode layer 21 may be a metal electrode, a reflective electrode, or a transparent electrode.
In a preferred embodiment, in order to obtain better display effect, the first electrode layer 21 may adopt a reflective electrode. At this time, the first electrode layer 21 can reflect the light emitted by the light emitting layer 22 to the second electrode layer 23, so as to enhance the light emitting effect of the light emitting device layer 20, and further obtain a better display effect.
It should be noted that the arrangement of the first electrode layer 21 does not affect the imaging effect of the imaging area 102. For example, when the first electrode layer 21 is a reflective electrode layer, the light transmittance of the image pickup region 102 to the ambient light can be improved by setting the size and the routing of the light emitting device or setting a light hole on the first electrode layer 21, so as to ensure the image pickup effect.
In particular implementations, the metal electrode is made of a conductive metal material. The conductive metal material may be formed by mixing one or more of metal electrode materials such as silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), and the like.
In a specific implementation, the reflective electrode includes a reflective layer and an auxiliary layer. Wherein the reflective layer may be formed of one or more of silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), and chromium (Cr). The auxiliary layer may be made of Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), zinc oxide (ZnO), indium oxide (In) 2 O 3 ) Etc. may be formed of one or more of the materials. When the reflective electrode is used specifically, the reflective electrode can also play a role in shading light or reflecting light.
In a specific implementation, the first electrode layer 21 may have a single-layer film structure or a multi-layer laminated film structure.
Specifically, the light emitting device layer 20 further includes a pixel defining layer disposed on the first electrode layer 21, and covering a peripheral portion or an edge portion of the first electrode and having a pixel opening exposing the first electrode, the pixel opening for defining a light emitting device.
In implementation, for example, a photosensitive organic material such as a polyimide resin or an acrylic resin may be coated, and then an exposure process and a developing process may be performed to form a pixel defining layer. In some embodiments, the pixel defining layer may be formed of a polymer material or an inorganic material through a printing process (e.g., an inkjet printing process).
Referring to fig. 4, the light emitting layer 22 is disposed on a side of the first electrode layer 21 away from the substrate 10, and the light emitting layer 22 is located in the pixel opening. More specifically, the light emitting layer 22 is disposed in a region of the first electrode exposed by the pixel opening.
Specifically, the light emitting layer 22 includes at least a light emitting material layer. The light emitting material layer is formed of a light emitting material for generating red light, blue light, green light, or white light. The light emitting material layer can emit red light, blue light, green light or white light under the voltage action of the first electrode layer 21 and the second electrode layer 23.
For example, in the present embodiment, the light emitting material layer may be an organic light emitting material. In other embodiments, the luminescent material layer may also be a quantum dot luminescent material.
In other embodiments, the light-emitting layer 22 may also include an organic functional layer. The organic functional layer may be, but is not limited to, at least one or more of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, or an electron injection layer.
Referring to fig. 4, the second electrode layer 23 is disposed on a side of the light emitting layer 22 away from the first electrode layer 21.
Specifically, the second electrode layer 23 may include a plurality of second electrodes individually disposed for each light emitting device, or may be disposed commonly for a plurality of light emitting devices to form a continuous film layer.
In this embodiment, the second electrode layer 23 is a transparent electrode. Similar to or the same as the first electrode layer 21, the second electrode layer 23 may have a single-layer film structure or a multi-layer laminated film structure. For example, in the present embodiment, the second electrode layer 23 has a single-layer structure for better light transmittance.
Wherein the transparent electrode refers to an electrode allowing light to pass through. In a specific implementation, the transparent electrode may be made of a transparent material or a semitransparent material. The transparent material may be, but is not limited to, indium tin oxide, indium zinc oxide, or indium oxide. In specific implementation, the transparent electrode can be prepared by a sputtering method.
In this embodiment, the first electrode layer 21 is provided as an anode layer, and the second electrode layer 23 is provided as a cathode layer.
In the present application, substantially the same film layer structure is employed for the light emitting device layer 20 in the image pickup region 102 and the light emitting device layer 20 in the non-image pickup region 101. It is to be noted that the present application is not limited thereto. For example, in implementation, the sub-pixel density of the image capturing region 102 and the sub-pixel density of the non-image capturing region 101 may be designed differently. Of course, for the purpose of manufacturing process or light emitting effect, the thickness, material or structure of the first electrode layer 21, the second electrode layer 23 or the light emitting layer 22 of the light emitting device layer 20 may be designed differently in the image pickup region 102 and the non-image pickup region 101. For example, to equalize the light intensity of the light emitting devices of different colors, the light emitting devices may be set to different microcavity lengths.
As shown in fig. 3, the light coupling layer 30 is disposed on a side of the light emitting device layer 20 away from the substrate 10. Referring to fig. 4, the optical coupling layer 30 is disposed on a side of the second electrode layer 23 away from the first electrode layer 21.
Referring to fig. 4, a surface of the second electrode layer 23 away from the first electrode layer 21 is a light exit surface, that is, light emitted from the light emitting layer 22 exits through the second electrode layer 23 and the light coupling layer 30. More specifically, the light of the light emitting device layer 20 needs to pass through the light coupling layer 30 to be emitted, and the light coupling layer 30 can adjust the light emitting rate of the light emitted from the light emitting device layer 20.
Referring further to fig. 4, the left side architecture diagram shows the non-image capture region 101 and the right side architecture diagram shows the image capture region 102. Comparing with the left and right side architecture diagrams in fig. 4, the light coupling layer 30 in the non-imaging region 101 has a first thickness L1, the light coupling layer 30 in the imaging region 102 has a second thickness L2, and the second thickness L2 is greater than the first thickness L1, so that the light coupling layer 30 of the present application can level up the difference of the luminance decay rates of the light emitting device layer 20 in the imaging region 102 and the non-imaging region 101, so that the luminance decay rates of the display region are uniform. For the detailed principles, please refer to the foregoing analysis, which is not repeated herein.
In order to ensure the overall display effect of the display panel 100, the thickness of the light coupling layer 30 ranges from 60nm to 100 nm. That is, the first thickness L1 and the second thickness L2 have a value range of 60nm to 100nm, respectively.
Specifically, the value range of the second thickness L2 is 1.2 times of the value range of the first thickness L1. In a preferred embodiment, the second thickness L2 ranges from 72nm to 96nm, and the first thickness L1 may range from 60nm to 80 nm.
In order to further reduce the viewing angle difference, the second thickness L2 may be set to be 1.2 times the first thickness L1. At this time, the luminance decay rates of the image pickup area 102 and the non-image pickup area 101 almost coincide. In some embodiments, when the second thickness L2 is 72nm, the first thickness L1 may be 60 nm. In still other embodiments, the second thickness is 96nm and the first thickness L1 is 80 nm.
In particular, the light coupling layer 30 may be directly disposed on a surface of the second electrode layer 23. With such an arrangement, the generation of the surface plasmons on the second electrode layer 23 can be suppressed, the loss of light penetrating through the cathode layer metal layer is reduced, the light extraction efficiency is improved, and meanwhile, the total reflection of the light extraction side interface can be reduced by the high-refractive-index optical coupling layer 30, and the optical waveguide effect in the light emitting device is reduced.
In other embodiments, the light coupling layer 30 may also be disposed in a manner not contacting the surface of the second electrode layer 23, for example, may be disposed on an encapsulation layer of the display panel 100.
Still further, the light coupling layer 30 may be separately provided for each of the light emitting devices of the light emitting device layer 20. For example, the light coupling layer 30 may be patterned for each light emitting device by a process substantially the same as or similar to the process for the light emitting layer 22. In other embodiments, the light coupling layer 30 may also be arranged commonly for a plurality of light emitting devices. A plurality of the light coupling layers 30 may be connected to each other to form a continuous film layer.
In particular, the material of the light coupling layer 30 may be an organic material. In specific implementation, the optical coupling layer 30 can be prepared by evaporation, coating or printing. Of course, the process for preparing the optical coupling layer 30 is more diversified and is not limited to a general film forming process.
In the present embodiment, the light coupling layer 30 is a single-layer film structure. In other embodiments, the light coupling layer 30 may also be a stacked structure of multiple stacked layers.
In addition, it should be noted that the thickness of the optical coupling layer 30 in the entire imaging region 102 is not necessarily uniform, and the thickness of the optical coupling layer 30 in the entire non-imaging region 101 is not necessarily uniform. For example, on the premise that the second thickness L2 is ensured to be larger than the first thickness L1, in order to equalize the display effect at different positions in the non-imaging region 101, the thickness of the optical coupling layer 30 in the non-imaging region 101 may also be adaptively adjusted.
Finally, it should be noted that the topographic structure of the light coupling layer 30 due to the thickness difference can be additionally disposed or planarized by an insulating layer or an interlayer dielectric layer of the display panel 100 itself, so as not to affect the disposition or performance of other functional film layers. For example, the surface of the light coupling layer 30 may be planarized by an encapsulation layer or a film layer of the substrate 10.
As shown in fig. 7, the present application further provides a display device, which includes a display panel 100, and the detailed structure of the display panel is referred to above and is not repeated herein.
The display device further comprises a lower-screen camera 200, wherein the lower-screen camera 200 is arranged on one side of the substrate 10 far away from the optical coupling layer 30, and the lower-screen camera 200 is positioned in the camera area 102.
At this time, the imaging region 102 can be used for display and imaging. The optical coupling layer 30 can level up the viewing angle difference between the image pickup area 102 and the non-image pickup area 101, and improve the sensory experience of the viewer.
In this application display panel and display device, carry out differentiation design through the thickness with the optical coupling layer 30 of display panel 100 light-emitting side, can flatten the light attenuation speed difference between district 102 and the non-district 101 of making a video recording, can reduce the technology of making a video recording under the screen to the harmful effects of display effect and demonstration visual angle, and then can promote to watch and experience. In addition, the display panel and the display device can overcome the position limitation of the camera area 102, and the camera area 102 is arranged at any position of the display area, so that the development of the camera technology under the screen is promoted.
The foregoing detailed description is directed to a display panel and a display device provided in the embodiments of the present application, and specific examples are applied herein to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. A display panel is provided with a display area, wherein the display area is provided with a camera shooting area and a non-camera shooting area, and is characterized in that the non-camera shooting area surrounds the camera shooting area, and a light coupling layer is arranged on the light emitting side of the display panel in the display area;
the thickness of the light coupling layer in the image pickup area is larger than that of the light coupling layer in the non-image pickup area, so that the brightness attenuation of the display area is consistent.
2. The display panel of claim 1, wherein the light coupling layer has a thickness in a range of 60nm to 100 nm.
3. The display panel according to claim 2, wherein a thickness of the light coupling layer in the image pickup region is 1.2 times a thickness of the light coupling layer in the non-image pickup region.
4. The display panel according to claim 3, wherein the light coupling layer in the image pickup region has a thickness of 72nm to 96nm, and the light coupling layer in the non-image pickup region has a thickness of 60nm to 80 nm.
5. The display panel according to claim 1, wherein in the display area, the display panel comprises:
a substrate; and the number of the first and second groups,
a light emitting device layer disposed on the substrate;
the light coupling layer is arranged on one side, far away from the substrate, of the light-emitting device layer;
wherein a luminance decay rate of the light emitting device layer in the non-image pickup region is greater than a luminance decay rate of the light emitting device layer in the image pickup region, and the light coupling layer and the light emitting device layer cooperate to make luminance decay of the display region uniform.
6. The display panel of claim 5, wherein the light emitting device layer comprises:
a first electrode layer disposed between the substrate and the light coupling layer;
a light emitting layer disposed between the first electrode layer and the light coupling layer; and (c) a second step of,
a second electrode layer disposed between the light emitting layer and the light coupling layer;
light emitted by the light emitting layer is emitted through the second electrode layer and the light coupling layer.
7. A display device characterized by comprising the display panel according to any one of claims 1 to 6.
8. The display device of claim 7, further comprising an off-screen camera disposed on a non-light-exiting side of the display panel, the off-screen camera located within the camera area.
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| CN202110397446.2A CN113178467B (en) | 2021-04-14 | 2021-04-14 | Display panel and display device |
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| CN202110397446.2A CN113178467B (en) | 2021-04-14 | 2021-04-14 | Display panel and display device |
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| CN114047649B (en) * | 2021-11-15 | 2022-10-04 | 武汉华星光电技术有限公司 | Liquid crystal display panel and on-vehicle liquid crystal display device |
| CN115061322B (en) * | 2022-06-17 | 2023-10-24 | 云谷（固安）科技有限公司 | Display screen, display screen manufacturing method and electronic equipment |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101133504A (en) * | 2005-03-24 | 2008-02-27 | 京瓷株式会社 | Light emitting element, light emitting device having the same and method for manufacturing the same |
| WO2008097046A1 (en) * | 2007-02-05 | 2008-08-14 | Lg Chem, Ltd. | Organic light-emitting device having improved light-emitting efficiency and method for fabricating the same |
| CN103000824A (en) * | 2011-06-17 | 2013-03-27 | 通用显示公司 | Non-common capping layer on an organic device |
| CN106653806A (en) * | 2016-11-30 | 2017-05-10 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel, manufacturing method thereof and electronic device |
| CN106981502A (en) * | 2017-04-27 | 2017-07-25 | 武汉华星光电技术有限公司 | A kind of OLED display panel and preparation method thereof |
| CN108987447A (en) * | 2018-07-24 | 2018-12-11 | 京东方科技集团股份有限公司 | A kind of oled panel and display device |
| CN109860270A (en) * | 2019-04-01 | 2019-06-07 | 上海天马有机发光显示技术有限公司 | A kind of display panel and display device |
| CN110571356A (en) * | 2019-10-14 | 2019-12-13 | 京东方科技集团股份有限公司 | Light-emitting device, manufacturing method, display panel and display device |
| CN110620129A (en) * | 2018-06-20 | 2019-12-27 | 京东方科技集团股份有限公司 | Display substrate, driving method thereof, display device and high-precision metal mask plate |
| CN110649076A (en) * | 2019-09-29 | 2020-01-03 | 上海天马微电子有限公司 | Organic light emitting display panel and display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007304227A (en) * | 2006-05-10 | 2007-11-22 | Konica Minolta Holdings Inc | Video display device and video photographing apparatus |
| TWI472076B (en) * | 2012-07-31 | 2015-02-01 | Mitsubishi Rayon Co | Light extraction film for el element, planar light emitting body and method for producing light extraction film for el element |
| CN104319351A (en) * | 2014-10-31 | 2015-01-28 | 京东方科技集团股份有限公司 | OLED array substrate, preparation method of OLED array substrate, display panel and display device |
-
2021
- 2021-04-14 CN CN202110397446.2A patent/CN113178467B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101133504A (en) * | 2005-03-24 | 2008-02-27 | 京瓷株式会社 | Light emitting element, light emitting device having the same and method for manufacturing the same |
| WO2008097046A1 (en) * | 2007-02-05 | 2008-08-14 | Lg Chem, Ltd. | Organic light-emitting device having improved light-emitting efficiency and method for fabricating the same |
| CN103000824A (en) * | 2011-06-17 | 2013-03-27 | 通用显示公司 | Non-common capping layer on an organic device |
| CN106653806A (en) * | 2016-11-30 | 2017-05-10 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel, manufacturing method thereof and electronic device |
| CN106981502A (en) * | 2017-04-27 | 2017-07-25 | 武汉华星光电技术有限公司 | A kind of OLED display panel and preparation method thereof |
| CN110620129A (en) * | 2018-06-20 | 2019-12-27 | 京东方科技集团股份有限公司 | Display substrate, driving method thereof, display device and high-precision metal mask plate |
| CN108987447A (en) * | 2018-07-24 | 2018-12-11 | 京东方科技集团股份有限公司 | A kind of oled panel and display device |
| CN109860270A (en) * | 2019-04-01 | 2019-06-07 | 上海天马有机发光显示技术有限公司 | A kind of display panel and display device |
| CN110649076A (en) * | 2019-09-29 | 2020-01-03 | 上海天马微电子有限公司 | Organic light emitting display panel and display device |
| CN110571356A (en) * | 2019-10-14 | 2019-12-13 | 京东方科技集团股份有限公司 | Light-emitting device, manufacturing method, display panel and display device |
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