CN114447252B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN114447252B CN114447252B CN202210113734.5A CN202210113734A CN114447252B CN 114447252 B CN114447252 B CN 114447252B CN 202210113734 A CN202210113734 A CN 202210113734A CN 114447252 B CN114447252 B CN 114447252B
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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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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Abstract
本申请实施例提供了一种显示面板及显示装置，显示面板包括：基板；发光器件层，设置于基板的一侧；透光结构，设置于发光器件层远离基板的一侧；透光层，设置发光器件层远离基板的一侧且与包覆透光结构；其中，透光层的折射率大于透光结构的折射率。本申请实施例通过设置透光结构和透光层，将特定的大视角方向的光转为正视角方向，在去掉光学选择膜的情况下，在显示面板中集成了光学选择膜的功能，同时也能增加显示的出光效率，以提高同等亮度下的寿命，以提高车载显示产品品质，降低成本，提高产品竞争力。
The embodiment of the present application provides a display panel and a display device, wherein the display panel includes: a substrate; a light-emitting device layer, which is arranged on one side of the substrate; a light-transmitting structure, which is arranged on the side of the light-emitting device layer away from the substrate; a light-transmitting layer, which is arranged on the side of the light-emitting device layer away from the substrate and covers the light-transmitting structure; wherein the refractive index of the light-transmitting layer is greater than the refractive index of the light-transmitting structure. The embodiment of the present application converts light in a specific large viewing angle direction into a positive viewing angle direction by arranging the light-transmitting structure and the light-transmitting layer. In the case of removing the optical selection film, the function of the optical selection film is integrated into the display panel, and the light output efficiency of the display can also be increased, so as to increase the lifespan at the same brightness, thereby improving the quality of vehicle-mounted display products, reducing costs, and improving product competitiveness.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
With the wide application of Organic Light-Emitting Diode (OLED) display in consumer electronic products such as mobile phones, wearable and narrowband internet of things (Narrow Band Internet of Things, NB-IoT), the OLED display technology is also rapidly developed, and the OLED display gradually permeates into the display application fields such as vehicle-mounted display based on the characteristics of better display image quality and faster response speed, which is also a field that needs to be expanded in future OLED display. At present, luxury high-end brands are marketed on the market on automobiles with OLED displays, and the trend is toward medium-low-end vehicles. Unlike consumer electronics, which require display modules, vehicle-mounted displays have special requirements for reliability and vehicle safety.
At present, vehicle-mounted display is subdivided into central control display, instrument display and possible future electronic rearview mirrors, and the requirements are strictly increased in sequence due to the consideration of driving safety. For traffic safety, especially in night or severe weather conditions, factories require that an optical selective film be attached to the vehicle display in order to limit the brightness in a certain direction, similar to the principle of a peep-proof film, so as to avoid that the display image light is reflected and imaged through a windshield and a side window glass to influence the sight of a driver. However, after the optical selective film is attached, the overall brightness of the screen is greatly reduced by about 25%. If the customer demand brightness is to be met, it is a great challenge to the lifetime of Electroluminescent (EL) devices, and OLED in-vehicle displays also need to be compatible with long lifetime requirements.
In summary, the display panel in the prior art has the technical problems of insufficient reliability of vehicle-mounted display and safety of vehicles, insufficient overall brightness of a screen and insufficient service life of a light emitting device.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a display panel and a display device, which are used for solving the technical problems of insufficient vehicle-mounted display reliability and vehicle safety, insufficient overall brightness of a screen and insufficient service life of a light-emitting device in the display panel of the prior art.
In a first aspect, an embodiment of the present application provides a display panel, including:
A substrate;
The light-emitting device layer is arranged on one side of the substrate;
the light transmission structure is arranged on one side of the light-emitting device layer, which is far away from the substrate;
the light-transmitting layer is arranged on one side of the light-emitting device layer away from the substrate and is coated with the light-transmitting structure;
the refractive index of the light-transmitting layer is larger than that of the light-transmitting structure.
In some embodiments of the present application, a light emitting device layer includes a light emitting device and an encapsulation layer;
The light-emitting device is arranged on one side of the substrate close to the light-transmitting layer;
The encapsulation layer encapsulates the light emitting device, the encapsulation layer having a refractive index less than the refractive index of the light transmissive layer.
In some embodiments of the present application, the light-transmitting structures include first light-transmitting structures, at least two first light-transmitting structures are parallel and arranged at intervals along a first direction, and each first light-transmitting structure extends along a second direction, and the first direction and the second direction are staggered.
In some embodiments of the present application, the light emitting device layer includes a plurality of pixel units, each pixel unit including a first color light emitting device, a second color light emitting device, and a third color light emitting device;
the first light-transmitting structure is positioned at two opposite sides of the pixel unit in the first direction and between the first color light emitting device and the second color light emitting device.
In some embodiments of the present application, the display panel further includes second light-transmitting structures, at least two of the second light-transmitting structures are parallel and spaced apart along a second direction, and each of the second light-transmitting structures extends along a first direction, and the first direction is perpendicular to the second direction.
In some embodiments of the present application, the light emitting device includes a plurality of pixel units, each including a first light emitting device, a second light emitting device, and a third light emitting device;
The first light-transmitting structure is arranged on two opposite sides of the pixel unit in the first direction and between the first light-emitting device and the second light-emitting device, and the second light-transmitting structure is arranged on two opposite sides of the pixel unit in the second direction.
In some embodiments of the application, the height of the at least one first light transmissive structure is greater than the height of the at least one second light transmissive structure.
In some embodiments of the application, the refractive index of the at least one first light transmissive structure is smaller than the refractive index of the at least one second light transmissive structure.
In some embodiments of the present application, the orthographic projection of at least one of the first color light emitting device, the second color light emitting device, and the third color light emitting device on the substrate is a first orthographic projection, the outline of the first orthographic projection is an axisymmetric polygon, the orthographic projection of the light transmissive structure on the substrate is a second orthographic projection surrounding at least two opposite sides of the first orthographic projection in the first direction and surrounding a portion of the side of the first orthographic projection in the second direction, and the second orthographic projection has at least one notch in the second direction.
In some embodiments of the present application, the light-transmitting structure has a trapezoid cross section perpendicular to the substrate, and a bottom of the trapezoid is located at a side close to the light-emitting device layer.
In some embodiments of the present application, the light-transmitting structure has a curved or semicircular surface perpendicular to the cross-sectional pattern of the substrate, the curved or semicircular surface including a linear edge, the linear edge being located on a side close to the light-emitting device layer.
In some embodiments of the application, the orthographic projection of the light transmissive structure on the substrate coincides at least partially with the orthographic projection of the light emitting device on the substrate.
In some embodiments of the present application, the geometric center of the orthographic projection of the light emitting device on the substrate is aligned with the geometric center of the orthographic projection of the light transmissive structure on the substrate.
In some embodiments of the present application, a light emitting device includes a cathode layer, a light emitting layer, and an anode layer sequentially stacked, the cathode layer being positioned at a side of the light emitting layer near a substrate;
Or the light emitting device comprises a laminated backlight layer and a liquid crystal layer, wherein the backlight layer is positioned on one side of the liquid crystal layer, which is close to the substrate.
In a second aspect, embodiments of the present application provide a display device, including a display panel as in any one of the embodiments of the first aspect.
The technical scheme provided by the embodiment of the application has the beneficial effects that the light in the specific large viewing angle direction is converted into the positive viewing angle direction by arranging the light transmission structure and the light transmission layer, the function of the optical selection film is integrated in the display panel under the condition that the optical selection film is removed, and meanwhile, the light emitting efficiency of display can be increased, so that the service life under the same brightness is prolonged, the quality of a vehicle-mounted display product is improved, the cost is reduced, and the product competitiveness is improved. Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a display panel according to an embodiment of the application;
FIG. 2 is a schematic plan view of a pixel unit according to an embodiment of the application;
FIG. 3 is a schematic plan view of a pixel unit according to another embodiment of the application;
FIG. 4 is a schematic plan view of a pixel unit according to another embodiment of the application;
FIG. 5 is a schematic diagram of a display panel according to another embodiment of the application;
FIG. 6 is a schematic diagram of a display panel according to another embodiment of the application;
fig. 7 is a schematic plan view of a pixel unit according to still another embodiment of the application.
In the figure:
a 1-substrate, a 2-light emitting device layer;
21-light emitting device, 22-encapsulation layer, 23-pixel definition layer, 31-light transmission structure, 32-light transmission layer;
21 a-a first color light emitting device, 21 b-a second color light emitting device, 21 c-a third color light emitting device, 31 a-a first light transmitting structure, 31 b-a second light transmitting structure.
Detailed Description
The present application is described in detail below, examples of embodiments of the application are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar components or components having the same or similar functions throughout. Further, if detailed description of the known technology is not necessary for the illustrated features of the present application, it will be omitted. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
It will be understood by those skilled in the art that all terms (including 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 belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, 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. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
The application researches and discovers that the reliability of vehicle-mounted display and the safety of vehicles are insufficient, the whole brightness of a screen is insufficient, and the service life of a light-emitting device is insufficient.
The application provides a display panel and a display device, which aim to solve the technical problems in the prior art. The following describes the technical scheme of the present application and how the technical scheme of the present application solves the above technical problems in detail with specific embodiments.
In a first aspect, embodiments of the present application provide a display panel. Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the application. The display panel includes a substrate 1, a light emitting device layer 2, a light transmitting structure 31, and a light transmitting layer 32.
The light emitting device layer 2 is provided on one side of the substrate 1.
The light transmitting structure 31 is disposed on a side of the light emitting device layer 2 remote from the substrate 1.
The light-transmitting layer 32 is disposed on a side of the light-emitting device layer 2 away from the substrate 1 and covers the light-transmitting structure 31.
Wherein the refractive index of the light-transmitting layer 32 is larger than the refractive index of the light-transmitting structure 31.
Through setting up light-transmitting structure 31 and printing opacity layer 32, turn specific big visual angle direction's light into the positive visual angle direction, under the condition of removing the optical selective membrane, integrated the function of optical selective membrane in display panel, also can increase the luminous efficiency of demonstration simultaneously to improve the life-span under the same luminance, in order to improve on-vehicle demonstration product quality, reduce cost improves product competitiveness.
In the present embodiment, since the refractive index of the light-transmitting layer 32 is greater than that of the light-transmitting structure 31, at least part of the light emitted from the light-emitting device layer 2 is totally reflected on the critical surface between the light-transmitting layer 32 and the light-transmitting structure 31 during the process of emitting the light from the light-transmitting layer 32 to the light-transmitting structure 31.
In some embodiments of the present application, the light emitting device layer 2 includes a light emitting device 21 and an encapsulation layer 22;
The light emitting device 21 is arranged on one side of the substrate 1 close to the light transmitting layer 32;
the encapsulation layer 22 encapsulates the light emitting device 21, and the refractive index of the encapsulation layer 22 is smaller than the refractive index of the light transmitting layer 32.
In the present embodiment, the light emitting angle of the light emitting device layer 2 is large, the visible angles of 85 degrees are all provided in four directions, and the degree of luminance attenuation of light is small. When the light-emitting device layer 2 is applied to vehicle-mounted display, a display screen can form reflection projection on a windshield, and judgment of a driver is misled, so that driving safety at night is influenced. In order to improve the safety, it is necessary to selectively attenuate the emitted light of the display panel.
The encapsulation layer 22 encapsulates the surface of the light emitting device 21, the encapsulation layer 22 is in contact with the light-transmitting layer 32, and the light-transmitting layer 32 encapsulates the light-transmitting structure 31. The emergent light emitted from the light emitting device 21 enters the packaging layer 22, then enters the light-transmitting layer 32 from the packaging layer 22, the first part of light is directly emitted to the emergent side from the light-transmitting layer 32, the light path of the second part of light passes through the critical surface of the light-transmitting layer 32 and the light-transmitting structure 31, the total reflection of part of light in the second part of light occurs at the critical surface of the light-transmitting layer 32 and the light-transmitting structure 31, and the other part of light enters the light-transmitting structure 31.
Since total reflection occurs under the condition that light enters a medium with a lower refractive index from a medium with a higher refractive index, the refracted light will disappear and the incident light will be reflected without entering a medium with a lower refractive index. Therefore, in the embodiment of the present application, the refractive index of the light-transmitting layer 32 is greater than that of the light-transmitting structure 31. In order to make more light totally reflect at the critical surface between the light-transmitting layer 32 and the light-transmitting structure 31, the refractive index of the encapsulation layer 22 is smaller than that of the light-transmitting layer 32 by forming a refractive index difference between the encapsulation layer 22 and the light-transmitting layer 32. When the outgoing light emitted from the light emitting device 21 passes through the critical surface between the encapsulation layer 22 and the light-transmitting layer 32, a part of the outgoing light still has the light-transmitting layer 32 and is directly emitted to the light-emitting side, and when the light path of another part of the light passes through the critical surface between the light-transmitting layer 32 and the light-transmitting structure 31, the incident angle becomes larger, and compared with the embodiment in which the refractive index of the light-transmitting layer 32 is the same as that of the encapsulation layer 22, more light is totally reflected at the critical surface between the light-transmitting layer 32 and the light-transmitting structure 31.
In some embodiments of the present application, the light-transmitting structure 31 includes first light-transmitting structures 31a, at least two first light-transmitting structures 31a are parallel, arranged at intervals along a first direction, and each first light-transmitting structure 31a extends along a second direction, and the first direction and the second direction are staggered.
As shown in fig. 2, fig. 2 is a schematic plan view of a pixel unit according to an embodiment of the application. In the present embodiment, the direction of the light emitting device layer 2 toward the windshield is defined as a first direction. In order to block the emission light of the light emitting device layer 2 from being emitted in the first direction, the first light transmitting structure 31a extending in the second direction is provided, and the first direction and the second direction are staggered with each other, so that the light path of the emission light passes through the first light transmitting structure 31a. In this embodiment, the plurality of pixel units are arranged in an array, and the plurality of first light-transmitting structures 31a are parallel to each other and are arranged at intervals along the first direction, that is, each pixel unit is provided with the first light-transmitting structure 31a at least on one side facing the windshield in the first direction.
In some embodiments of the present application, the light emitting device layer 2 includes a plurality of pixel units, each including a first color light emitting device 21a, a second color light emitting device 21b, and a third color light emitting device 21c;
the first light transmitting structure 31a is located at opposite sides of the pixel unit in the first direction and between the first color light emitting device 21a and the second color light emitting device 21 b.
In this embodiment, a plurality of pixel units are arranged in an array, and a first light-transmitting structure 31a is disposed between two adjacent pixel units in the first direction, that is, different first light-transmitting structures 31a are parallel to each other and also form an array, and at least one pixel unit is just located between two adjacent first light-transmitting structures 31 a.
Further investigation is made on pixel units each including the first color light emitting device 21a, the second color light emitting device 21b, and the third color light emitting device 21c therein. In a specific embodiment, the first color is red, the second color is green, and the third color is blue. Because the blue phosphor material has poor stability and short life, the blue phosphor material has low luminous efficiency, and the orthographic projection area of the third color light emitting device 21c on the substrate 1 is larger than the orthographic projection area of any one of the first color light emitting device 21a and the second color light emitting device 21b on the substrate 1. The first color light emitting device 21a and the second color light emitting device 21b are arranged together on the upper side in the drawing, and the third color light emitting device 21c is arranged separately on the lower side in the drawing. The first light transmitting structure 31a is provided between the first color light emitting device 21a and the second light emitting device 21, in addition to being provided outside the pixel unit. The emitted light of the first color light emitting device 21a or the second color light emitting device 21b is prevented from escaping in the first direction.
In some embodiments of the present application, the display panel further includes second light-transmitting structures 31b, at least two second light-transmitting structures 31b are parallel, are arranged at intervals along the second direction, and each second light-transmitting structure 31b extends along the first direction, and the first direction is perpendicular to the second direction.
As shown in fig. 3, fig. 3 is a schematic plan view of a pixel unit according to another embodiment of the application. The display panel is applied to vehicle-mounted display, and the display screen forms a reflection projection on the electronic rearview mirror on the side surface in addition to the reflection projection on the windshield. For driving safety, a second light-transmitting structure 31b is further provided in this embodiment, and a direction of the display device layer facing any one of the electronic rearview mirrors is defined as a second direction. In order to block the emission light of the light emitting device layer 2 from being emitted in the second direction, a second light transmitting structure 31b extending in the first direction is provided. In a specific embodiment, the first direction and the second direction are perpendicular to each other, and a part of the light path of the outgoing light passes through the first light-transmitting structure 31a, and another part passes through the second light-transmitting structure 31b. In this embodiment, the plurality of pixel units are arranged in an array, and the plurality of second light-transmitting structures 31b are parallel to each other and are arranged at intervals along the second direction, that is, each pixel unit is provided with the second light-transmitting structure 31b at least on one side facing any one of the electronic rearview mirrors in the second direction.
In some embodiments of the present application, the light emitting device 21 includes a plurality of pixel units, each including a first light emitting device 21, a second light emitting device 21, and a third light emitting device 21;
The first light transmitting structure 31a is disposed at two opposite sides of the pixel unit in the first direction and between the first light emitting device 21 and the second light emitting device 21, and the second light transmitting structure 31b is disposed at two opposite sides of the pixel unit in the second direction.
In this embodiment, a plurality of pixel units are arranged in an array, and a second light-transmitting structure 31b is disposed between two adjacent pixel units in the second direction, that is, different second light-transmitting structures 31b are parallel to each other and also form an array, and at least one pixel unit is just located between two adjacent second light-transmitting structures 31 b.
Further investigation is made on pixel units each including the first color light emitting device 21a, the second color light emitting device 21b, and the third color light emitting device 21c therein. In the above-described embodiment, the first color light emitting device 21a and the second color light emitting device 21b are arranged together on the upper side in the drawing, and the third color light emitting device 21c is arranged separately on the lower side in the drawing. The second light-transmitting structures 31b are disposed at least outside the pixel units, i.e. on two opposite sides of the pixel units in the second direction. In another embodiment, the second light-transmitting structure 31b is further disposed between the third color light emitting device 21c and the first color light emitting device 21a or the second light emitting device 21, and at least one second light-transmitting structure 31b is disposed inside the pixel unit to separate the first color light emitting device 21a, the second color light emitting device 21b and the third color light emitting device 21c. The light emitted from the first color light emitting device 21a, the second color light emitting device 21b, or the third color light emitting device 21c is prevented from escaping in the second direction.
In some embodiments of the present application, the height of the at least one first light-transmitting structure 31a is greater than the height of the at least one second light-transmitting structure 31 b.
In the present embodiment, since the electronic rear view mirror and the driver are located in the same direction of the light emitting device layer 2, i.e., the second direction, the height of the second light transmitting structure 31b needs to be smaller than the height of the first light transmitting structure 31a, preventing the light transmitting structure 31 from affecting the front view angle light of the driver. In the preparation of the display panel, the first light-transmitting structure 31a and the second light-transmitting structure 31b are prepared by using a half-tone mask plate, wherein the half-tone mask plate has low transmittance corresponding to the first light-transmitting structure 31a and high transmittance corresponding to the second light-transmitting structure 31b, so that the height of the first light-transmitting structure 31a is larger than that of the second light-transmitting structure 31b, and the total reflection of the light passing through the second light-transmitting structure 31b is less than that of the light passing through the first light-transmitting structure 31 a. The shapes and the heights of the first light-transmitting structure 31a and the second light-transmitting structure 31b are reasonably selected, so that the light totally reflected by the light-transmitting structure 31 is emitted to the positive viewing angle, and the light brightness of the positive viewing angle is enhanced. In this embodiment, the light after total reflection exits to a viewing angle of 45-60 degrees, which can be observed by the primary and secondary drivers.
In some embodiments of the present application, the refractive index of the at least one first light transmissive structure 31a is smaller than the refractive index of the at least one second light transmissive structure 31 b.
In the present embodiment, since the electronic rear view mirror and the driver are located in the same direction of the light emitting device layer 2, i.e., the second direction, the refractive index of the second light transmitting structure 31b needs to be larger than that of the first light transmitting structure 31a, preventing the light transmitting structure 31 from affecting the front view angle light of the driver. In the preparation display panel, adopt different materials to prepare first light-transmitting structure 31a and second light-transmitting structure 31b respectively, the refractive index difference between second light-transmitting structure 31b and the printing opacity layer 32 is less than the difference between first light-transmitting structure 31a and the printing opacity layer 32, thereby the refractive index that forms second light-transmitting structure 31b is greater than the refractive index of first light-transmitting structure 31a, make the light that takes place total reflection through second light-transmitting structure 31b be less than the light that takes place total reflection through first light-transmitting structure 31a, under the circumstances of guaranteeing the positive visual angle light-emitting in the second direction, shield the light-emitting of other angles, can select structure and material that shading effect is better in the first direction.
In some embodiments of the present application, the orthographic projection of at least one of the first color light emitting device 21a, the second color light emitting device 21b, and the third color light emitting device 21c on the substrate 1 is a first orthographic projection, the outline of the first orthographic projection is an axisymmetric polygon, the orthographic projection of the light transmissive structure 31 on the substrate 1 is a second orthographic projection surrounding at least two opposite sides of the first orthographic projection in the first direction and surrounding a portion of the side surface of the first orthographic projection in the second direction.
In some embodiments, the outline of the first orthographic projection is a non-axisymmetric polygon, the orthographic projection of the light transmissive structure 31 on the substrate 1 is a second orthographic projection surrounding at least one side of the first orthographic projection, and in some embodiments, the second orthographic projection surrounds at least two opposite sides of the first orthographic projection.
The second orthographic projection fully surrounds the first orthographic projection in the first direction and forms at least one notch in a semi-surrounding manner in the second direction.
In one embodiment, at least one of the first color light emitting device 21a, the second color light emitting device 21b and the third color light emitting device 21c is rectangular in orthographic projection on the substrate 1, and the light transmitting structures 31 are disposed on opposite sides of the light emitting device 21, so that the light shielding effect is better.
As shown in fig. 4, fig. 4 is a schematic plan view of a pixel unit according to another embodiment of the application. In another embodiment, the orthographic projection of at least one of the first color light emitting device 21a, the second color light emitting device 21b, and the third color light emitting device 21c on the substrate 1 is an axisymmetric polygon (the number of sides is greater than 4), such as a hexagon. The light transmitting structure 31 is disposed only at opposite sides of the light emitting device 21, and the light leakage phenomenon is still serious. In this embodiment, the second orthographic projection not only completely surrounds opposite sides of the first orthographic projection in the first direction, but also surrounds a portion of a side surface of the first orthographic projection in the second direction, and a notch is formed in an unenclosed portion. The notch may be located on only one side of the first orthographic projection or may be located on opposite sides of the first orthographic projection in the second direction. The outgoing light of the light emitting device layer 2 passes through the notch toward the normal viewing angle.
In some embodiments of the present application, the light-transmitting structure 31 has a trapezoid shape in cross-section pattern perpendicular to the substrate 1, and the bottom of the trapezoid is located at a side close to the light-emitting device layer 2.
In some embodiments, the cross-sectional pattern of the light-transmitting structure 31 is a trapezoid with a narrow top and a wide bottom. The bottom surface of the light-transmitting structure 31 is disposed on the encapsulation layer 22, i.e. the bottom of the trapezoid is in direct contact with the encapsulation layer 22. In a specific embodiment, the cross-sectional pattern of the light-transmitting structure 31 is a regular trapezoid.
In some embodiments of the present application, the light-transmitting structure 31 has a cambered or semicircular surface perpendicular to the cross-sectional pattern of the substrate 1, and the cambered or semicircular surface includes a linear edge located on a side close to the light-emitting device layer 2.
Fig. 5 is a schematic structural diagram of a display panel according to another embodiment of the application. In some embodiments, the cross-sectional pattern of the light-transmitting structure 31 is a cambered or semi-circular surface. The bottom surface of the light-transmitting structure 31 is disposed on the encapsulation layer 22, that is, the straight edge of the cambered surface or the semicircular surface is in direct contact with the encapsulation layer 22.
In some embodiments of the application, the front projection of the light transmissive structure 31 onto the substrate 1 at least partially coincides with the front projection of the light emitting device 21 onto the substrate 1.
In some embodiments, the colors of the emitted light between the adjacent light emitting devices 21 are different, such as between any two of the first color light emitting device 21a, the second color light emitting device 21b, and the third color light emitting device 21c, in order to prevent mutual interference. Between adjacent light emitting devices 21, a stacked pixel defining layer 23 and a black matrix are provided, the orthographic projection of the black matrix on the substrate 1 covering the orthographic projection of the light transmitting structure 31 on the substrate 1. In the present embodiment, the light transmitting structure 31 does not affect the light emitted from the light emitting device layer 2 directly to the light emitting side, and reflects only the light with a large viewing angle.
In other embodiments, a stacked pixel defining layer 23 and black matrix are disposed between adjacent light emitting devices 21. A portion of the orthographic projection of the light-transmitting structure 31 coincides with the orthographic projection of the black matrix on the substrate 1, and another portion coincides with the orthographic projection of the light-emitting device 21 on the substrate 1.
Fig. 6 is a schematic structural view of a display panel according to still another embodiment of the present application, and fig. 7 is a schematic plan view of a pixel unit according to still another embodiment of the present application, as shown in fig. 6 and 7.
In further embodiments, the front projection of the light emitting device 21 onto the substrate 1 covers the front projection of the light transmissive structure 31 onto the substrate 1. In the present embodiment, the pixel defining layer 23 and the black matrix are provided between the adjacent light emitting devices 21, which are stacked. The orthographic projection of the light transmitting structure 31 on the substrate 1 is completely within the orthographic projection coverage of the light emitting device 21 on the substrate 1, and there is no intersection outside the orthographic projection coverage of the black matrix on the substrate 1.
In a specific embodiment, the geometric center of the orthographic projection of the light emitting device 21 on the substrate 1 is aligned with the geometric center of the orthographic projection of the light transmissive structure 31 on the substrate 1.
In one embodiment of the present application, the light emitting device 21 includes a cathode layer, a light emitting layer, and an anode layer sequentially stacked, the cathode layer being located at a side of the light emitting layer near the substrate 1;
In another embodiment of the present application, the light emitting device 21 includes a laminated backlight layer and a liquid crystal layer, the backlight layer being located on a side of the liquid crystal layer close to the substrate 1.
The display panel provided by the application is suitable for OLED and Liquid crystal display panels (Liquid CRYSTAL DISPLAY, LCD).
Based on the same inventive concept, in a second aspect, an embodiment of the present application provides a display device including the display panel according to any one of the embodiments described above in the first aspect.
By the embodiment of the application, at least the following beneficial effects are realized that the light in a specific large viewing angle direction is converted into the positive viewing angle direction by arranging the light transmission structure 31 and the light transmission layer 32, the function of the optical selection film is integrated in the display panel under the condition that the optical selection film is removed, and meanwhile, the light emitting efficiency of display can be increased, so that the service life under the same brightness is prolonged, the quality of a vehicle-mounted display product is improved, the cost is reduced, and the product competitiveness is improved.
Those of skill in the art will appreciate that the various operations, methods, steps in the flow, acts, schemes, and alternatives discussed in the present application may be alternated, altered, combined, or eliminated. Further, other steps, means, or steps in a process having various operations, methods, or procedures discussed herein may be alternated, altered, rearranged, disassembled, combined, or eliminated. Further, steps, measures, schemes in the prior art with various operations, methods, flows disclosed in the present application may also be alternated, altered, rearranged, decomposed, combined, or deleted.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, directly connected, or indirectly connected through an intermediary, or may be in communication with the interior of two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the flowcharts of the figures may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily being sequential, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
The foregoing is only a partial embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present application, and such modifications and adaptations are intended to be comprehended within the scope of the present application.
Claims (14)
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| WO2024021053A1 (en) * | 2022-07-29 | 2024-02-01 | 京东方科技集团股份有限公司 | Display panel, manufacturing method for display panel, and display apparatus |
| CN115377320A (en) * | 2022-08-19 | 2022-11-22 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN115568248A (en) * | 2022-09-29 | 2023-01-03 | 武汉华星光电技术有限公司 | OLED display panel |
| WO2024239225A1 (en) * | 2023-05-23 | 2024-11-28 | 京东方科技集团股份有限公司 | Pixel circuit, display panel comprising pixel circuit, and display apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241541A (en) * | 2014-09-15 | 2014-12-24 | 京东方科技集团股份有限公司 | Organic electroluminescence device and display device |
| CN111384139A (en) * | 2020-03-20 | 2020-07-07 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof, peep-proof film and display device |
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| KR100784806B1 (en) * | 2001-09-04 | 2007-12-14 | 삼성전자주식회사 | Display device having a changed viewing angle, including optical compensation film, manufacturing method thereof, and optical compensation film |
| JP2016029481A (en) * | 2015-08-27 | 2016-03-03 | パナソニックＩｐマネジメント株式会社 | Display device |
| KR102489711B1 (en) * | 2017-10-12 | 2023-01-19 | 삼성디스플레이 주식회사 | Display device |
| CN115188913A (en) * | 2020-05-06 | 2022-10-14 | 湖北长江新型显示产业创新中心有限公司 | A display panel and display device |
| CN111697037B (en) * | 2020-06-04 | 2024-04-09 | 武汉天马微电子有限公司 | Organic light emitting display panel and display device |
| CN113193152B (en) * | 2021-04-29 | 2023-05-12 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN113867567B (en) * | 2021-09-23 | 2023-07-21 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN113964280B (en) * | 2021-10-18 | 2024-04-16 | 湖北长江新型显示产业创新中心有限公司 | Display panel and display device |
-
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241541A (en) * | 2014-09-15 | 2014-12-24 | 京东方科技集团股份有限公司 | Organic electroluminescence device and display device |
| CN111384139A (en) * | 2020-03-20 | 2020-07-07 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof, peep-proof film and display device |
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