CN112289953B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN112289953B
CN112289953B CN202011168565.2A CN202011168565A CN112289953B CN 112289953 B CN112289953 B CN 112289953B CN 202011168565 A CN202011168565 A CN 202011168565A CN 112289953 B CN112289953 B CN 112289953B
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layer
refractive index
light
display panel
encapsulation layer
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CN112289953A (en
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蔡振飞
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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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
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The application provides a display panel and a display device, wherein the display panel and the display device comprise a packaging layer, a color film layer arranged on the packaging layer and an organic layer arranged on the color film layer, the refractive index of the organic layer is greater than that of the packaging layer, the color film layer comprises a plurality of shading parts, and the packaging layer and the organic layer are used for enabling reflected light corresponding to external light to irradiate into the shading parts; the scheme increases the absorptivity of a plurality of shading parts in the color film layer to the external light, thereby improving the contrast ratio of the display panel and the display picture of the display device.

Description

Display panel and display device
Technical Field
The present application relates to the field of display technologies, and in particular, to the manufacture of display devices, and more particularly, to a display panel and a display apparatus.
Background
The POL-less technology (the technology of replacing the polarizer with a color film) has the advantages of thin thickness and high Light-Emitting efficiency, and gradually replaces the way of separately arranging the polarizer in an OLED (Organic Light-Emitting Diode) display panel.
However, compared with the mode of separately arranging the polarizer, the POL-less technology has higher surface reflectivity of the color film layer, which results in lower light absorption efficiency of the color film layer, and reduces the contrast of the display image of the OLED display panel.
Therefore, it is necessary to provide a display panel and a display device which can improve the contrast of a display screen.
Disclosure of Invention
The utility model aims at providing a display panel and display device sets up to be greater than through the refracting index that will locate the organic layer on the encapsulated layer the refracting index of encapsulated layer for make the reverberation that external light corresponds can shine in a plurality of shading portions in the various rete, thereby absorbed by a plurality of shading portions, solved among the current POL-less technique that various rete is to light absorption efficiency lower, reduced OLED display panel's the problem of the contrast of display screen.
The embodiment of the application provides a display panel, which comprises an encapsulation layer, a color film layer arranged on the encapsulation layer and an organic layer arranged on the color film layer;
the refractive index of the organic layer is greater than that of the encapsulation layer;
the color film layer comprises a plurality of shading parts, and the packaging layer and the organic layer are used for enabling reflected light corresponding to external light to irradiate the shading parts.
In one embodiment, the encapsulation layers include a first encapsulation layer, a second encapsulation layer disposed on the first encapsulation layer, and a third encapsulation layer disposed on the second encapsulation layer;
the refractive index of the second encapsulation layer is greater than the refractive index of the first encapsulation layer;
the refractive index of the third encapsulation layer is greater than the refractive index of the second encapsulation layer;
the refractive index of the organic layer is greater than the refractive index of the third encapsulation layer.
In an embodiment, the refractive index of the first encapsulation layer is not less than 1.45 and not more than 1.5, the refractive index of the second encapsulation layer is not less than 1.6 and not more than 1.7, and the refractive index of the third encapsulation layer is not less than 1.7 and not more than 1.8.
In one embodiment, the first packaging layer comprises silicon nitride, the second packaging layer comprises polyimide, and the third packaging layer comprises silicon oxide.
In one embodiment, the refractive index of the organic layer is not less than 1.8 and not more than 1.9.
In one embodiment, the constituent material of the organic layer includes an organic resin material.
In an embodiment, the display panel further includes a light out-coupling layer disposed on a side of the encapsulation layer away from the color film layer;
the refractive index of the light out-coupling layer is less than the refractive index of the encapsulation layer.
In an embodiment, the refractive index of the light out-coupling layer is not less than 1.3 and not more than 1.4.
In an embodiment, the constituent material of the light out-coupling layer comprises an organic small molecule material.
Embodiments of the present application also provide a display device, which includes the display panel as described in any of the above.
The application provides a display panel and display device, this display panel and display device include the encapsulated layer, locate various rete on the encapsulated layer and locating organic layer on the various rete, various rete includes a plurality of shading portions, through with the refracting index on organic layer sets up to being greater than the refracting index of encapsulated layer for the reverberation that external light corresponds shines extremely in a plurality of shading portions, thereby quilt a plurality of shading portions absorb, jet out in order to reduce the light of various rete, reduce display panel and display device to the reflectivity of external light, thereby improve display panel and display device's the contrast of display screen.
Drawings
The present application is further illustrated by the following figures. It should be noted that the drawings in the following description are only intended to illustrate some embodiments of the present application, and that other drawings may be derived by those skilled in the art without inventive effort.
Fig. 1 is a schematic cross-sectional view of a first display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic cross-sectional view of a second display panel according to an embodiment of the present disclosure.
Fig. 3 is a schematic cross-sectional view of a third display panel according to an embodiment of the present disclosure.
Fig. 4 is a schematic cross-sectional view of a fourth display panel provided in the embodiment of the present application.
Fig. 5 is a schematic cross-sectional view of a fifth display panel according to an embodiment of the present disclosure.
Detailed Description
The technical solution 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. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all 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.
In the description of the present application, it is to be understood that the terms "away from", "close to", "horizontal", "up", "down", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, for example, "away" only refers to the side of the surface away from an object, and may be more specifically away, or may not be limited to the number of film layers spaced from the object, and "up" only refers to the side of the surface above the object, and may specifically refer to the side directly above, obliquely above, and above the surface, as long as it is above the object level, and the above orientation or positional relationship is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present application. Furthermore, the terms "first", "second", etc. 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
It should be noted that the term "thickness" is a neutral word and does not mean a bias toward thick or thin, but means that a preset value exists, and the value is uncertain and will depend on actual conditions.
In addition, it should be noted that the drawings only provide the structures and steps which are relatively close to the present application, and some details which are not related to the present application are omitted, so as to simplify the drawings and make the application point clear, but not to show that the device in practice is the same as the drawings and not to limit the device in practice.
The present application provides a display panel including, but not limited to, the following embodiments and combinations of the following embodiments.
In one embodiment, as shown in fig. 1, the display panel 00 includes an encapsulation layer 100, a color film layer 200 disposed on the encapsulation layer 100, and an organic layer 300 disposed on the color film layer 200; the refractive index of the organic layer 300 is greater than the refractive index of the encapsulation layer 100; the color film layer 200 includes a plurality of light-shielding portions 201, and the encapsulation layer 100 and the organic layer 300 are configured to irradiate reflected light corresponding to external light into the plurality of light-shielding portions 201.
The color film layer 200 further includes a plurality of optical filters 202, each optical filter 202 of the plurality of optical filters 202 is disposed between two corresponding adjacent optical filters 201, and the plurality of optical filters 202 are configured to allow reflected light corresponding to external light to pass through and exit. Further, the plurality of optical filter portions 202 have different colors, and can filter the light passing through the plurality of optical filter portions 202, so that the light having a desired wavelength passes through the corresponding optical filter portion 202, thereby realizing monochromatization of the light.
Understandably, the refractive index formula sin θ 1 *n 1 ＝sinθ 2 *n 2 Wherein n is 1 Representing the refractive index of light in a first medium, n 2 Representing the refractive index of the light in the second medium, theta 1 Representing the angle of the light ray in the first medium with respect to the normal, theta 2 Representing the angle of the light ray in the second medium with respect to the normal, e.g. theta, when the light ray is incident on the second medium from the first medium 1 I.e. representing the angle of incidence of the light, theta 2 I.e. the angle of refraction of a ray of light. From the refractive index formula, if a light ray is irradiated from a first medium with a larger refractive index to a second medium with a smaller refractive index, the incident angle of the light ray is smaller than the refraction angle of the light ray.
Specifically, as shown in fig. 1, the difference between the refractive index of the organic layer 300 and the refractive index of the plurality of filter portions 202 in the color film layer 200 is ignored here, that is, it is considered approximately that the incident light ray 01 is transmitted to the point a on the interface between the color film layer 200 and the encapsulation layer 100 in the same direction in the plurality of filter portions 202 in the organic layer 300 and the color film layer 200, the refracted light ray 02 generated in the other direction by refraction at the point a is transmitted to the point B on the surface of the encapsulation layer 100 away from the color film layer 200, and the reflected light ray 03 generated in the other direction by refraction of the light ray 02 at the point B is transmitted to the point C on the interface between the color film layer 200 and the encapsulation layer 100, and is absorbed by the corresponding light blocking portion 201.
It is understood that, since the refractive index of the organic layer 300 is greater than the refractive index of the encapsulation layer 100, in combination with the above refractive index formula, the incident angle α corresponding to the incident light ray 01 is smaller than the refraction angle β corresponding to the refraction light ray 02, and as can be seen from the reflection law, the incident angle γ corresponding to the refraction light ray 02 is equal to the reflection angle δ corresponding to the reflection light ray 03, and with respect to the refractive index of the organic layer 300 not greater than the refractive index of the encapsulation layer 100, the reflection light ray 03 corresponding to the incident light ray 01 moves in the horizontal direction to a side away from the corresponding incident point a, and the reflection light ray 03 can be irradiated onto the corresponding light shielding portion 201 and absorbed. Therefore, for the external light including a plurality of incident light rays with different incident directions and different incident positions, the present embodiment may be adopted to increase the proportion of the incident light rays that can be finally absorbed by the plurality of light shielding portions 201 in the external light, so as to reduce the reflectivity of the display panel 00 to the external light, thereby improving the contrast of the display frame of the display panel 00.
It should be noted that, in this embodiment, the dimension specifications of the light shielding portions 201, such as the widths of the organic layers 300, the thicknesses of the color film layers 200, and the thicknesses of the encapsulation layers 100, should be matched with the refractive indexes of the organic layers 300, the refractive indexes of the encapsulation layers 100, and the like, and finally satisfy: compared with the prior art, the present embodiment can increase the probability that the reflected light corresponding to the external light is finally absorbed by the plurality of light shielding portions 201. For example, a preset light absorption range may be set, and on the premise that the refractive index of the organic layer 300 is greater than the refractive index of the encapsulation layer 100, the size specifications and refractive indexes of different film layers are adjusted, so that the light absorption rate of the display panel 00 for external light is within the preset light absorption range, and the size specification values and refractive index values of multiple matched sets of different film layers are obtained.
In one embodiment, as shown in fig. 2, the encapsulation layer 100 includes a first encapsulation layer 101, a second encapsulation layer 102 disposed on the first encapsulation layer 101, and a third encapsulation layer 103 disposed on the second encapsulation layer 102; the refractive index of the second encapsulation layer 102 is greater than the refractive index of the first encapsulation layer 101; the refractive index of the third encapsulation layer 103 is greater than the refractive index of the second encapsulation layer 102; the refractive index of the organic layer 300 is greater than the refractive index of the third encapsulation layer 103.
As can be understood, since the refractive index of the organic layer 300, the refractive index of the third encapsulation layer 103, the refractive index of the second encapsulation layer 102, and the refractive index of the first encapsulation layer 101 are sequentially decreased, and similarly, as can be seen from the above analysis, compared to the case where the refractive index of the organic layer 300, the refractive index of the third encapsulation layer 103, the refractive index of the second encapsulation layer 102, and the refractive index of the first encapsulation layer 101 are not satisfied with being sequentially decreased, the reflected light corresponding to a part of the incident light in the external light moves to a side away from the corresponding incident point in the horizontal direction, and the reflected light can be irradiated onto and absorbed by the corresponding light shielding portion 201, and the proportion of the incident light which can be finally absorbed by the plurality of light shielding portions 201 in the external light increases, so that the reflectivity of the display panel 00 to the external light can be decreased, thereby increasing the contrast of the display screen of the display panel 00.
In an embodiment, the refractive index of the first encapsulation layer 101 is not less than 1.45 and not more than 1.5, the refractive index of the second encapsulation layer 102 is not less than 1.6 and not more than 1.7, and the refractive index of the third encapsulation layer 103 is not less than 1.7 and not more than 1.8.
It is understood that the constituent material of the first encapsulation layer 101, the constituent material of the second encapsulation layer 102, and the constituent material of the third encapsulation layer 103 may determine the refractive index of the first encapsulation layer 101, the refractive index of the second encapsulation layer 102, and the refractive index of the third encapsulation layer 103, respectively. Here, the composition material of the first encapsulation layer 101, the composition material of the second encapsulation layer 102, and the composition material of the third encapsulation layer 103 are not completely the same, for example, the composition material of the first encapsulation layer 101, the composition material of the second encapsulation layer 102, and the composition material of the third encapsulation layer 103 are all different, or the composition material of the first encapsulation layer 101, the composition material of the second encapsulation layer 102, and the composition material of the third encapsulation layer 103 are the same, but the ratio of each material in the first encapsulation layer 101, the second encapsulation layer 102, and the third encapsulation layer 103 is different.
In an embodiment, the composition material of the first encapsulation layer 101 includes silicon nitride, the composition material of the second encapsulation layer 102 includes polyimide, and the composition material of the third encapsulation layer 103 includes silicon oxide.
It is understood that, as shown in fig. 2, the display panel 00 further includes a light emitting layer 400, and the light emitting layer 400 is disposed on a side of the encapsulation layer 100 away from the color film layer 200. The composition material of the light emitting layer 400 includes an organic light emitting material, which has poor waterproof and air-proof effects, that is, the light emitting layer 400 meets air when meeting water and is prone to fail, thereby reducing the lifetime of the display panel 00, and therefore, the composition material of the first encapsulation layer 101 in the encapsulation layer 100, which is close to the light emitting layer 400, may be an inorganic material including but not limited to silicon nitride, which radically blocks water and air from entering the light emitting layer 400. Further, since the first encapsulation layer 101 made of an inorganic material has poor flexibility, in order to achieve the flexibility of the display panel 00, the second encapsulation layer 102 may be made of an organic material including, but not limited to, polyimide. Similarly, the third encapsulation layer 103 may be made of an inorganic material including, but not limited to, silicon oxide to prevent the second encapsulation layer 102 from failing. Still further, the encapsulation layer 100 may be configured as an inorganic layer and an organic layer which are alternately arranged, wherein both the film layer of the encapsulation layer 100 close to the light emitting layer 400 and the film layer close to the color film layer 200 are the inorganic layers.
Further, as shown in fig. 3, the light emitting layer 400 includes a plurality of anode portions 401, a plurality of light emitting portions 402, a plurality of pixel defining portions 403, and a cathode layer 404, the plurality of anode portions 401 are disposed at intervals in the same layer, the plurality of light emitting portions 402 and the plurality of anode portions 401 correspond to each other one by one, one pixel defining portion 403 is disposed between two adjacent sets of light emitting portions 402 and anode portions 401, and the cathode layer 404 is disposed on the plurality of light emitting portions 402 and the plurality of pixel defining portions 403, that is, the cathode layer 404 may be disposed in a whole layer. The plurality of anode portions 401 are positively charged, each anode portion 401 has a corresponding voltage value, the cathode layer 404 is negatively charged, and the plurality of anode portions 401 and the cathode layer 404 disposed in the whole layer generate a driving current to act on the corresponding light-emitting portion 402, so that the corresponding light-emitting portion 402 exhibits a brightness of a corresponding gray scale.
Specifically, when the display panel 00 is a top-emission OLED display panel, the reflectivity of the anode portions 401 is high, the transmittance of the cathode layer 404 is high, and it may be considered that all light rays transmitted from above to the upper surfaces of the anode portions 401 are reflected by the anode portions 401 to the color film layer 200, that is, the reflection point B in fig. 1 may be considered as a reflection point formed on the upper surfaces of the anode portions 401; when the display panel 00 is a bottom emission type OLED display panel, the transmittance of the plurality of anode portions 401 is higher, the reflectance of the cathode layer 404 is higher, and correspondingly, the color film layer 200 and the organic layer 300 are located below the light emitting layer 400, and similarly, it can be considered that all the light rays transmitted from below to the lower surface of the cathode layer 404 are reflected to the color film layer 200 by the cathode layer 404.
It can be understood that the factors determining the transmission of light in the encapsulation layer 100 include the thickness of each film layer in the encapsulation layer 100, in addition to the refractive index of each film layer in the encapsulation layer 100. When the refractive index of the first encapsulation layer 101 is not less than 1.45 and not more than 1.5, the refractive index of the second encapsulation layer 102 is not less than 1.6 and not more than 1.7, and the refractive index of the third encapsulation layer 103 is not less than 1.7 and not more than 1.8, correspondingly, the thickness of the first encapsulation layer 101 is not less than 300 nanometers and not more than 400 nanometers, the thickness of the second encapsulation layer 102 is not less than 8 nanometers and not more than 10 nanometers, and the thickness of the third encapsulation layer 103 is not less than 300 nanometers and not more than 400 nanometers.
It is understood that, since the organic layer 300 is disposed above the encapsulation layer 100, and the refractive index of the third encapsulation layer 103 below the organic layer 300 is not less than 1.7 and not more than 1.8, the refractive index of the organic layer 300 is only required to be greater than the refractive index of the third encapsulation layer 103.
In one embodiment, the refractive index of the organic layer 300 is not less than 1.8 and not more than 1.9.
It is understood that, since the organic layer 300 is disposed on the color film layer 200, the light transmittance of the organic layer 300 may be not less than 95%, so that most of the light can pass through the organic layer 300.
In one embodiment, the constituent material of the organic layer 300 includes an organic resin material.
Similarly, the factors determining the transmission of light in the organic layer 300 include the thickness of the organic layer 300 in addition to the refractive index of the organic layer 300. When the refractive index of the organic layer 300 is not less than 1.8 and not more than 1.9, correspondingly, the thickness of the organic layer 300 is not less than 1 micrometer and not more than 2 micrometers.
In an embodiment, as shown in fig. 4, the display panel 00 further includes a light out-coupling layer 500, where the light out-coupling layer 500 is disposed on a side of the encapsulation layer 100 away from the color film layer 200; the refractive index of the light out-coupling layer 500 is smaller than the refractive index of the encapsulation layer 100.
It can be understood that, since the light out-coupling layer 500 is disposed below the encapsulation layer 100, and the refractive index of the first encapsulation layer 101 above the light out-coupling layer 500 is not less than 1.45 and not greater than 1.5, it is sufficient that the refractive index of the light out-coupling layer 500 is less than the refractive index of the first encapsulation layer 101, as can be seen from the above description.
Further, when the display panel 00 is a top-emission OLED display panel, that is, when the transmittance of the cathode layer 404 is high, similarly, the refractive index of the light out-coupling layer 500 may be larger than the refractive index of the cathode layer 404. On one hand, the reflected light corresponding to a part of incident light in the external light moves to a side far away from the corresponding incident point in the horizontal direction, and the reflected light can irradiate on the corresponding light shielding portion 201 and be absorbed, the proportion of the incident light which can be finally absorbed by the plurality of light shielding portions 201 in the external light is increased, the reflectivity of the display panel 00 to the external light can be reduced, and thus the contrast of the display frame of the display panel 00 is improved; on the other hand, the light out-coupling layer 500 can prevent the light emitted from each light-emitting portion 402 from being emitted from the plurality of light-filtering portions 202, so that the light emitted from each light-emitting portion 402 is emitted from the same light-filtering portion 202, thereby reducing the risk of color cast of the display panel 00.
In an embodiment, the refractive index of the light out-coupling layer 500 is not less than 1.3 and not more than 1.4.
It will be appreciated that since the light out-coupling layer 500 is provided on the light emitting layer 400, i.e. the light out-coupling layer 500 has a light extraction effect, the light out-coupling layer 500 may be made of a transparent material.
In an embodiment, the constituent materials of the light out-coupling layer 500 include small organic molecule materials.
Similarly, the factors that determine the transmission of light in the light out-coupling layer 500 include the thickness of the light out-coupling layer 500, in addition to the refractive index of the light out-coupling layer 500. When the refractive index of the light out-coupling layer 500 is not less than 1.3 and not more than 1.4, correspondingly, the thickness of the light out-coupling layer 500 is not less than 300 nm and not more than 400 nm.
In one embodiment, as shown in fig. 5, the display panel 00 further includes an array substrate 600 and a planar layer 700, the planar layer 700 is disposed on a side of the light emitting layer 400 away from the light out-coupling layer 500, and the array substrate 600 is disposed on a side of the planar layer 700 away from the light emitting layer 400.
The array substrate 600 includes a substrate 601, the substrate 601 may include a first substrate, a second substrate, and a buffer layer disposed between the first substrate and the second substrate, a constituent material of the first substrate and a constituent material of the second substrate are both flexible materials, such as, but not limited to, polyimide materials, a constituent material of the buffer layer is an inorganic material, and the buffer layer is used for distinguishing the first substrate from the second substrate and preventing air and water from entering the first substrate or the second substrate.
The array substrate 600 further includes a plurality of thin film transistors disposed on the substrate, the plurality of thin film transistors correspond to the plurality of anode portions 401 one to one, each thin film transistor of the plurality of thin film transistors includes a source and a drain, and the source or the drain of each thin film transistor is electrically connected to the corresponding anode portion 401 to control the light emitting condition of the corresponding light emitting portion 402.
Specifically, the planarization layer 700 is disposed on the source and the drain of the thin film transistors and is used for planarizing one side of the array substrate 600 close to the light emitting layer 400, the planarization layer 700 includes a plurality of through holes, the through holes correspond to the anode portions 401 one by one, and the source or the drain of each thin film transistor is electrically connected to the corresponding anode portion 401 through the corresponding through hole.
The application provides display panel and display device, this display panel and display device include the packaging layer, locate various rete on the packaging layer and locating organic layer on the various rete, various rete includes a plurality of shading parts, through with the refracting index on organic layer sets up to being greater than the refracting index of packaging layer for the reverberation that external light corresponds shines extremely in a plurality of shading parts, thereby by a plurality of shading parts absorb, in order to reduce to jet out the light of various rete reduces display panel and display device to the reflectivity of external light, thereby improves display panel and display device's the contrast of display frame.
The structure of the display panel and the display device provided in the embodiments of the present application is described in detail above, and the principle and the implementation of the present application are explained in this document by applying specific examples, and the description of the above embodiments is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (7)

1. A display panel is characterized by comprising an encapsulation layer, a color film layer arranged on the encapsulation layer, an organic layer arranged on the color film layer and a light coupling-out layer arranged on one side, far away from the color film layer, of the encapsulation layer;
the color film layer comprises a plurality of shading parts, and the packaging layer and the organic layer are used for irradiating reflected light corresponding to external light into the plurality of shading parts;
the packaging layer comprises a first packaging layer, a second packaging layer arranged on the first packaging layer and a third packaging layer arranged on the second packaging layer;
wherein, the widths of the plurality of light-shielding parts, the thickness of the organic layer, the thickness of the color film layer and the thickness of the packaging layer are matched with the refractive index of the organic layer and the refractive index of the packaging layer, and the matching relationship comprises:
the refractive index of the first encapsulation layer is not less than 1.45 and not more than 1.5, the refractive index of the second encapsulation layer is not less than 1.6 and not more than 1.7, the refractive index of the third encapsulation layer is not less than 1.7 and not more than 1.8, and the refractive index of the organic layer is not less than 1.8 and not more than 1.9.
2. The display panel according to claim 1, wherein a constituent material of the first encapsulation layer comprises silicon nitride, a constituent material of the second encapsulation layer comprises polyimide, and a constituent material of the third encapsulation layer comprises silicon oxide.
3. The display panel according to claim 1 or 2, wherein a constituent material of the organic layer comprises an organic resin material.
4. The display panel of claim 1, wherein a refractive index of the light out-coupling layer is less than a refractive index of the encapsulation layer.
5. The display panel according to claim 4, wherein a refractive index of the light out-coupling layer is not less than 1.3 and not more than 1.4.
6. A display panel as claimed in claim 4 or 5 characterized in that the constituent material of the light out-coupling layer comprises an organic small molecule material.
7. A display device characterized in that it comprises a display panel according to any one of claims 1 to 6.
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