CN113054137A - Display panel and display device - Google Patents
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- CN113054137A CN113054137A CN202110267627.3A CN202110267627A CN113054137A CN 113054137 A CN113054137 A CN 113054137A CN 202110267627 A CN202110267627 A CN 202110267627A CN 113054137 A CN113054137 A CN 113054137A
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- H10K50/844—Encapsulations
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Abstract
The application provides a display panel and a display device, wherein the display panel comprises a luminous layer and an encapsulation structure covering the luminous layer; the packaging structure comprises a first packaging layer; the first packaging layer comprises a first inorganic layer and a plurality of first reinforcing parts, the first reinforcing parts are arranged on one side, close to the light emitting layer, of the first inorganic layer at intervals, and the first reinforcing parts comprise graphene. This application sets up a plurality of first rib including graphite alkene through the one side interval that first packaging layer in packaging structure is close to the luminescent layer, has strengthened the pliability of first packaging layer, has improved packaging structure's anti ability of buckling, has promoted display panel's packaging performance.
Description
Technical Field
The application relates to the field of display, in particular to a display panel and a display device.
Background
With the development of display technology, people have higher and higher quality requirements for display panels, and OLED (Organic Light-Emitting Diode) display panels have the advantages of simple structure, self-luminescence, fast response speed, ultra-Light and thinness, low power consumption, and the like, and are gradually becoming development hotspots of display panels.
Because the water and oxygen erosion can cause the OLED display panel to lose efficacy, the OLED display panel is often packaged by using a thin film packaging process after the OLED display panel is prepared, so that the flexible OLED display panel is protected from the water and oxygen erosion. The conventional film packaging structure is an inorganic film layer, an organic film layer and a multi-film-layer overlapping structure of the inorganic film layer, and the inorganic film layer is easy to crack when the OLED display panel is bent, so that water and oxygen invade the OLED display panel to cause device packaging failure and influence the service life of the OLED display panel.
Therefore, a new display panel and a new display device are needed to solve the above technical problems.
Disclosure of Invention
The application provides a display panel and a display device, which are used for solving the problems that the inorganic film layer of the existing display panel is easy to crack when an OLED device is bent, and the device is packaged and loses efficacy due to water and oxygen invasion.
In order to solve the technical problem, the technical scheme provided by the application is as follows:
the application provides a display panel, which comprises a luminous layer and an encapsulation structure covering the luminous layer; the packaging structure comprises a first packaging layer;
the first encapsulation layer comprises a first inorganic layer and a plurality of first reinforcing parts, the first reinforcing parts are arranged on one side, close to the light emitting layer, of the first inorganic layer at intervals, and the first reinforcing parts comprise graphene.
In the display panel provided by the application, the distance between any two adjacent first reinforcing parts is greater than or equal to 1 cm and less than or equal to 5 cm.
In the display panel provided by the application, the thickness of any first reinforcing part is greater than or equal to 1 nanometer and less than or equal to 100 nanometers.
In the display panel provided by the application, the package structure further includes a second package layer, the second package layer includes a second inorganic layer and a plurality of second reinforcing portions, the plurality of second reinforcing portions are arranged at intervals on one side of the second inorganic layer close to the light emitting layer, and the second reinforcing portions include graphene; an organic layer between the first encapsulation layer and the second encapsulation layer.
In the display panel provided by the application, any two adjacent first reinforcing parts have equal first intervals, any two adjacent second reinforcing parts have equal second intervals, and the first intervals are different from the second intervals.
In the display panel provided by the application, the thickness of the first reinforcing part is different from that of the second reinforcing part.
In the display panel provided by the application, the thickness range of the first packaging layer is 200 nanometers to 700 nanometers, the thickness range of the organic layer is 1 micrometer to 20 micrometers, and the thickness range of the second packaging layer is 800 nanometers to 1600 nanometers.
In the display panel provided by the application, the display panel comprises a plane area and a bending area, and the first reinforcing part is positioned in the first packaging layer corresponding to the bending area; the first packaging layer further comprises a plurality of third reinforcing parts which are arranged at intervals corresponding to the planar area, and the third reinforcing parts comprise graphene;
wherein the distance between any two adjacent first reinforcing parts is different from the distance between any two adjacent third reinforcing parts.
In the display panel provided by the application, the package structure further includes a second package layer, the second reinforcing portion is located in the second package layer corresponding to the bending region, the second package layer further includes a plurality of fourth reinforcing portions arranged at intervals corresponding to the plane region, and the fourth reinforcing portions include graphene; wherein the distance between any two adjacent second reinforcing parts is different from the distance between any two adjacent fourth reinforcing parts.
The application also provides a display device which comprises the display panel.
Has the advantages that: according to the display panel, the first reinforcing parts are arranged on one side, close to the light emitting layer, of the first packaging layer in the packaging structure at intervals, the first reinforcing parts comprise graphene, and the graphene with flexibility is arranged in the first packaging layer at intervals, so that on one hand, the flexibility of the first inorganic layer in the packaging structure is enhanced, the first inorganic layer is not prone to crack when the display panel is bent, and the packaging performance of the display panel is improved; on the other hand, the first reinforcing parts are arranged in the first packaging layer at intervals, so that when the display panel is bent, the stress on the first inorganic layer can be released from the interval between any two adjacent first reinforcing parts, the bending resistance of the packaging structure is improved, and the bending strength of the display panel is improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Fig. 2 is a first cross-sectional view of the display panel shown in fig. 1 along direction AA.
Fig. 3 is a second cross-sectional view of the display panel shown in fig. 1 along direction AA.
Fig. 4 is a third cross-sectional view of the display panel shown in fig. 1 along direction AA.
Fig. 5 is a first top view of a first encapsulation layer according to an embodiment of the present disclosure.
Fig. 6 is a top view of a second encapsulation layer provided in an embodiment of the present application.
Fig. 7 is a top view of a display panel according to an embodiment of the present application.
Fig. 8 is a first cross-sectional view of the display panel shown in fig. 7 along the DA direction.
Fig. 9 is a second cross-sectional view of the display panel shown in fig. 7 along the DA direction.
Fig. 10 is a third cross-sectional view of the display panel shown in fig. 7 along the DA direction.
Fig. 11 is a second top view of a first encapsulation layer according to an embodiment of the present disclosure.
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. It is to be understood that the embodiments described 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 prior art, when the flexible OLED display panel is bent, cracks are easily generated on an organic film layer in an encapsulating structure for encapsulating the OLED device, water and oxygen easily enter the display panel along the direction of the cracks, and the OLED device is easy to lose efficacy after contacting the water and oxygen and affects the service life of the OLED display panel. Based on this, the present application proposes the following technical solutions for the above technical problems:
referring to fig. 1 to 11, the display panel 100 includes a light emitting layer 101 and an encapsulation structure 102 covering the light emitting layer 101; the encapsulation structure 102 comprises a first encapsulation layer 1;
the first encapsulation layer 1 includes a first inorganic layer 1021, and a plurality of first reinforcing portions 10211, the plurality of first reinforcing portions 10211 are disposed at intervals on a side of the first inorganic layer 1021 close to the light emitting layer 101, and the first reinforcing portions 10211 include graphene.
According to the present disclosure, a plurality of first reinforcing portions 10211 are disposed at intervals on one side of a first encapsulation layer 1 in an encapsulation structure 102, the side of the first encapsulation layer 1, which is close to a light emitting layer 101, the first reinforcing portions 10211 include graphene, and the graphene with flexibility is disposed at intervals in the first encapsulation layer 1, so that on one hand, the flexibility of the first inorganic layer 1021 in the encapsulation structure 102 is enhanced, so that when the display panel 100 is bent, cracks are not easily generated in the first inorganic layer 1021, and the encapsulation performance of the display panel 100 is improved; on the other hand, the first reinforcing portions 10211 are spaced in the first encapsulation layer 1, so that when the display panel 100 is bent, the stress applied to the first inorganic layer 1021 can be released from the space between any two adjacent first reinforcing portions 10211, and the bending resistance of the encapsulation structure 102 is improved, and the bending strength of the display panel 100 is improved.
The technical solution of the present application will now be described with reference to specific embodiments.
Referring to fig. 1, the display panel 100 includes a light emitting layer 101 and an encapsulation structure 102 covering the light emitting layer 101.
Referring to fig. 2, the package structure 102 includes a first package layer 1; the first encapsulation layer 1 includes a first inorganic layer 1021, and a plurality of first reinforcing portions 10211, the plurality of first reinforcing portions 10211 are disposed at intervals on a side of the first inorganic layer 1021 close to the light emitting layer 101, and the first reinforcing portions 10211 include graphene.
In this embodiment, the encapsulation structure 102 includes a first encapsulation layer 1, when the first encapsulation layer 1 includes a first inorganic layer 1021 and a first reinforcing portion 10211, a side of the first inorganic layer 1021 near the light emitting layer 101 is provided with a plurality of first reinforcing portions 10211, that is, the first inorganic layer 1021 covers the first reinforcing portions 10211 and covers gaps between the first reinforcing portions 10211, when the display panel 100 is bent, the first inorganic layer 1021 is provided with the first reinforcing portions 10211, so that when the encapsulation structure 102 is bent along with the display panel 100, the first inorganic layer 1021 is not prone to crack, the flexibility of the first encapsulation layer 1 is improved, and it is avoided that water and oxygen enter the display panel 100 along cracks generated by the first inorganic layer 1021 to reduce the service life of the display panel 100; on the other hand, the first reinforcing portions 10211 are disposed at intervals in the first inorganic layer 1021, and when the display panel 100 is bent, the bending force applied to the first inorganic layer 1021 can be released from the interval between any two adjacent first reinforcing portions 10211, so that the degree of bending of the first encapsulation layer 1 is enhanced, and the encapsulation performance of the display panel 100 is ensured.
In this embodiment, the encapsulation structure 102 includes a first encapsulation layer 1, and when the first encapsulation layer 1 includes a first inorganic layer 1021 and a first stiffener 10211, the organic layer 1022 is located on the first encapsulation layer 1, and a second encapsulation layer 1023 is located on the organic layer 1022. When the display panel 100 outwards buckles, namely the first packaging layer 1 is to keeping away from when a side of the light emitting layer 101 buckles, the bending force that the first packaging layer 1 received is greater than the bending force that the second packaging layer 1023 received, and the angle that the first packaging layer 1 needs to buckle is greater than the angle that the second packaging layer 1023 needs to buckle, therefore, set up a plurality of interval distribution in the first packaging layer 1 the first rib 10211 has strengthened when the display panel 100 outwards buckles, the pliability 1021 of the first packaging layer 1 avoids the first inorganic layer 1021 produces the crackle because of receiving great bending force, causes the invasion of water and oxygen display panel 100, influences the display performance of display panel 100.
In this embodiment, a distance between any two adjacent first reinforcing portions 10211 is greater than or equal to 1 cm and less than or equal to 5 cm. The distance between any two adjacent first reinforcing portions 10211 decreases with the increase of the outward bending degree of the display panel 100, that is, the greater the distribution density of the first reinforcing portions 10211 in the first encapsulation layer 1, the stronger the bending resistance of the first encapsulation layer 1 is, and the less likely the first inorganic layer 1021 is to crack.
In this embodiment, the thickness of any of the first reinforcements 10211 is greater than or equal to 1 nm and less than or equal to 100 nm. The thickness of any first reinforcing part 10211 becomes thicker along with the increase of the outward bending degree of the display panel 100, that is, the larger the ratio of the thickness of the first reinforcing part 10211 to the overall thickness of the first packaging layer 1 is, the thicker the thickness of the first reinforcing part 10211 is, the stronger the bending resistance of the first packaging layer 1 is, the better the bendability of the display panel 100 is, and the better the packaging performance of the display panel 100 is.
According to an embodiment of the present application, referring to fig. 1 and fig. 3, the package structure 102 includes a first package layer 1; the first encapsulation layer 1 includes a first inorganic layer 1023 and a plurality of first reinforcing portions 10231, the plurality of first reinforcing portions 10231 are arranged at intervals on one side of the first inorganic layer 1023 close to the light-emitting layer 101, and the first reinforcing portions 10231 include graphene.
In this embodiment, when the first encapsulation layer 1 includes the first inorganic layer 1023 and the first reinforcing portion 10231, a side of the first inorganic layer 1023 close to the light emitting layer 101 is provided with a plurality of first reinforcing portions 10231, and the plurality of first reinforcing portions 10231 are arranged at intervals in the first inorganic layer 1023, that is, the first inorganic layer 1023 covers the first reinforcing portions 10231 and covers gaps between the plurality of first reinforcing portions 10231. When the display panel 100 is bent, the first inorganic layer 1023 is not prone to crack due to the first reinforcing portion 10231 arranged on the first encapsulation layer 1, so that the flexibility of the first encapsulation layer 1 is improved, and water and oxygen are prevented from entering the display panel 100 along cracks generated by the first inorganic layer 1023 to reduce the service life of the display panel 100 when the encapsulation structure 102 is bent along with the display panel 100; on the other hand, the first reinforcing portions 10231 are arranged in the first encapsulating layer 1 at intervals, when the display panel 100 is bent, the bending force applied to the first inorganic layer 1023 can be released from the interval between any two adjacent first reinforcing portions 10211, so that the bending degree of the first encapsulating layer 1 is enhanced, and the encapsulating performance of the display panel 100 is guaranteed.
In this embodiment, the package structure 102 includes a first package layer 1, and when the first package layer 1 includes a first inorganic layer 1023 and a first reinforcing portion 10231, the organic layer 1022 is located on the second package layer 1021, and the first package layer 1 is located on the organic layer 1022. When the display panel 100 is inwards bent, that is, the first packaging layer 1 is bent to a side close to the light emitting layer 101, the bending force applied to the first packaging layer 1 is greater than the bending force applied to the second packaging layer 1021, and the angle at which the first packaging layer 1 needs to be bent is greater than the angle at which the second packaging layer 1021 needs to be bent, so that the first reinforcing part 10231 is arranged in the first packaging layer 1 and distributed at intervals, so that the flexibility of the first packaging layer 1 is enhanced when the display panel 100 is inwards bent, and the phenomenon that the first inorganic layer 1023 cracks due to the fact that the first inorganic layer 1023 is subjected to a large bending force, so that water and oxygen invade the display panel 100 to influence the display performance of the display panel 100 is avoided.
In this embodiment, a distance between any two adjacent first reinforcing portions 10231 is greater than or equal to 1 cm and less than or equal to 5 cm. The distance between any two adjacent first reinforcing portions 10231 becomes smaller as the inward bending degree of the display panel 100 increases, that is, the greater the distribution density of the first reinforcing portions 10231 in the first inorganic layer 1023 is, the stronger the bending resistance of the first encapsulation layer 1 is, and the less cracks are generated in the first inorganic layer 1023.
In this embodiment, the thickness of any of the first reinforcing portions 10231 is greater than or equal to 1 nm and less than or equal to 100 nm. The thickness of any first reinforcing portion 10231 becomes thicker along with the increase of the inward bending degree of the display panel 100, that is, the larger the ratio of the thickness of the first reinforcing portion 10231 to the overall thickness of the first encapsulating layer 1 is, the thicker the thickness of the first reinforcing portion 10231 is, the stronger the bending resistance of the first encapsulating layer 1 is, the better the bendability of the display panel 100 is, and the better the long-term encapsulating effect of the display panel 100 is.
According to an embodiment of the present disclosure, referring to fig. 1 and fig. 4, the package structure 102 includes a first package layer 1 and a second package layer 2, the first package layer 1 includes a first inorganic layer 1021, and a plurality of first reinforcing portions 10211, the plurality of first reinforcing portions 10211 are disposed at intervals on a side of the first inorganic layer 1021 near the light emitting layer 101, and the first reinforcing portions 10211 include graphene; the second encapsulation layer 2 includes a second inorganic layer 1023, and a plurality of second reinforcing portions 10231, the plurality of second reinforcing portions 10231 are arranged at intervals on one side of the second inorganic layer 1023 close to the light-emitting layer 101, and the second reinforcing portions 10231 include graphene; the encapsulation structure 102 further includes an organic layer 1022 located between the first encapsulation layer 1 and the second encapsulation layer 2.
In this embodiment, the first package layer 1 and the second package layer 2 are respectively provided with the first reinforcing part 10211 and the second reinforcing part 10231, and the materials of the first reinforcing part 10211 and the second reinforcing part 10231 both include graphene, so that the first reinforcing part 10211 and the second reinforcing part 10231 both have good flexibility. Will first rib 10211 sets up in first inorganic layer 1021, second rib 10231 sets up in second inorganic layer 1023, be favorable to improving first inorganic layer 1021 and the pliability of second inorganic layer 1023 display panel 100 takes place when buckling, makes first inorganic layer 1021 and second inorganic layer 1023 be difficult for producing the crackle, from this display panel 100 obtains double-deck encapsulation protection, moreover, still obtains double-deck encapsulation protection when display panel 100 buckles, has promoted display panel's pliability and packaging performance.
In this embodiment, since the first reinforcing portions 10211 are disposed at intervals in the first inorganic layer 1021 and the second reinforcing portion 10231 is disposed at intervals in the second inorganic layer 1023, when the display panel 100 is bent, the bending force applied to the first inorganic layer 1021 can be released through the interval between any two adjacent first reinforcing portions 10211, so as to reduce the effect of the bending force on the first inorganic layer 1021; meanwhile, the bending force applied to the second inorganic layer 1023 can be released through the space between any two adjacent first reinforcing parts 10231, and the action effect of the force on the second inorganic layer 1023 when the display panel 100 is bent is alleviated.
In this embodiment, any two adjacent first reinforcing portions 10211 have an equal first pitch, and any two adjacent second reinforcing portions 10231 have an equal second pitch, where the first pitch is different from the second pitch. Specifically, when the display panel 100 is bent inward, that is, when the encapsulation structure 102 is bent toward a side close to the light emitting layer 101, the bending force applied to the first encapsulation layer 1 is smaller than the bending force applied to the second encapsulation layer 2, and the angle at which the first encapsulation layer 1 needs to be bent is smaller than the angle at which the second encapsulation layer 2 needs to be bent, so that a first distance between any two adjacent first reinforcing portions 10211 in the first inorganic layer 1021 is larger than a second distance between any two adjacent second reinforcing portions 1023 in the second inorganic layer 1023, that is, a distribution density of the first reinforcing portions 10211 in the first inorganic layer 1021 is smaller than a distribution density of the second reinforcing portions 1023 in the second inorganic layer 1023, which is beneficial to different inward bending degrees of the first encapsulation layer 1 and the second encapsulation layer 2, the first inorganic layer 1021 and the second inorganic layer 1023 are still not easy to crack, the double-layer packaging effect of the display panel 100 is maintained, and the service life of the display panel 100 is prolonged.
In the present embodiment, the first reinforcing part 10211 is different from the thickness of the second reinforcing part 10231. Specifically, when the display panel 100 is bent inward, the bending force applied to the first encapsulation layer 1 is smaller than the bending force applied to the second encapsulation layer 2, and the angle at which the first encapsulation layer 1 needs to be bent is smaller than the angle at which the second encapsulation layer 2 needs to be bent, so that the thickness of the second reinforcement portion 10231 arranged in the second inorganic layer 1023 at intervals is greater than the thickness of the first reinforcement portion 10211 arranged in the first inorganic layer 1021 at intervals, so that the toughness of the second encapsulation layer 2 is stronger than that of the first encapsulation layer 1, and when the bending degree of the second inorganic layer 1023 is greater than that of the first inorganic layer 1021, the second encapsulation layer 2 and the first encapsulation layer 1 are not prone to crack, thereby preventing water and oxygen from entering the display panel 100, and prolonging the service life of the display panel 100.
In this embodiment, when the display panel 100 is bent outward, the distance between the first reinforcing portions 10211 in the first encapsulation layer 1 may be set to be greater than the distance between the second reinforcing portions 10231 in the second encapsulation layer 2, or the thickness of the first reinforcing portions 10211 in the first encapsulation layer 1 may be set to be greater than the thickness of the second reinforcing portions 10231 in the second encapsulation layer 2, so that the first encapsulation layer 1 and the second encapsulation layer 2 are not prone to crack at the same time, and the double-layer encapsulation effect of the display panel 100 is maintained.
In this embodiment, when the display panel 100 is bent, the distance and thickness of the first reinforcing portions 10211 in the first encapsulation layer 1 may be set to be different from the distance and thickness of the second reinforcing portions 10231 in the second encapsulation layer 2 according to the bending direction, so that the first inorganic layer 1021 and the second inorganic layer 1023 have better flexibility when bent, cracks are not easily generated, and a good encapsulation effect on the display panel 100 is maintained.
In this embodiment, when the display panel 100 is bent, the thicknesses of the first package layer 1 and the second package layer 2 are proportional to the bending degree, and the larger the bending degree is, the larger the thickness range is, and the thicker the first reinforcing part 10211 and the second reinforcing part 10231 of the first package layer 1 and the second package layer 2 are. Specifically, when the display panel 100 is bent inward, the thickness range of the first encapsulation layer 1 is 200 nanometers to 700 nanometers, the thickness range of the organic layer is 1 micrometer to 20 micrometers, and the thickness range of the second encapsulation layer 2 is 800 nanometers to 1600 nanometers; when the display panel 100 is bent outward, the thickness range of the first encapsulation layer 1 is 800 nanometers to 1600 nanometers, the thickness range of the organic layer is 1 micrometer to 20 micrometers, and the thickness range of the second encapsulation layer 2 is 200 nanometers to 700 nanometers. The first packaging layer 1 and the second packaging layer 2 have good flexibility and are not easy to crack when having different bending degrees.
In this embodiment, referring to fig. 5 and 6, the first reinforcing portions 10211 are distributed in an array in the first package layer 1, the second reinforcing portions 10231 are randomly distributed in the second package layer 2, the distribution density and arrangement of the first reinforcing portions 10211 in the first inorganic layer 1021 can be set according to the required flexibility, and the distribution density and arrangement of the second reinforcing portions 10231 in the second inorganic layer 1023 prevent cracks and water and oxygen intrusion.
In this embodiment, the arrangement of the first reinforcing part 10211 on the first inorganic layer 1021 and the second reinforcing part 10231 on the second inorganic layer 1023 can be arranged in a random arrangement or an array distribution, or a combination of the two arrangements, which is not limited herein.
According to an embodiment of the present application, referring to fig. 7 and 8, the display panel 100 includes a planar region CC and a bending region BB, and the first stiffener 10211 is located in the first encapsulation layer 1 corresponding to the bending region BB; the first encapsulation layer 1 further includes a plurality of third reinforcements 10212 arranged at intervals corresponding to the planar region CC, and the third reinforcements 10212 include graphene; wherein a pitch of any two adjacent first reinforcing parts 10211 is different from a pitch of any two adjacent third reinforcing parts 10212.
In this embodiment, when the display panel 100 is bent, only the bending area BB is bent, and the first reinforcing portion 10211 is disposed in the first inorganic layer 1021 corresponding to the bending area BB; the third reinforced part 10212 is disposed in the first inorganic layer 1021 corresponding to the planar area CC, and specifically, the third reinforced part 10212 is disposed in the planar area CC corresponding to the intersection of the bending area BB and the planar area CC. Because the bending area BB needs to be bent to a degree greater than the bending degree of the planar area CC, the distance between any two adjacent first reinforcing portions 10211 is smaller than the distance between any two adjacent third reinforcing portions 10212, so that no matter the first inorganic layer 1021 of the bending area BB or the first inorganic layer 1021 of the planar area CC of the first encapsulation layer 1 is not easy to crack, the invasion of water and oxygen is prevented, and the encapsulation effect of the display panel 100 is improved.
In this embodiment, when the display panel 100 is bent, the thickness of the first reinforcing portion 10211 is greater than the thickness of the third reinforcing portion 10212, or the distribution density of the first reinforcing portion 10211 is greater than the distribution density of the third reinforcing portion 10212, and the thickness of the first reinforcing portion 10211 is greater than the thickness of the third reinforcing portion 10212, so as to improve the flexibility of the first inorganic layer 1021 in the bending region BB and the planar region CC, so that the first inorganic layer 1021 is not prone to crack, and the detailed arrangement manner is not limited herein.
According to an embodiment of the present application, referring to fig. 7 and 9, when the display panel 100 is bent, only the bending region BB is bent, and the first reinforcing portion 10231 is disposed in the first inorganic layer 1023 corresponding to the bending region BB; the third reinforcing portion 10232 is disposed in the first inorganic layer 1023 corresponding to the planar area CC, and specifically, the third reinforcing portion 10232 is disposed in the planar area CC corresponding to the intersection of the bending area BB and the planar area CC. Because the bending area BB needs to be bent to a greater extent than the bending extent of the planar area CC, the distance between any two adjacent first reinforcing portions 10231 is smaller than the distance between any two adjacent third reinforcing portions 10232, so that no matter the first encapsulation layer 1 is in the first inorganic layer 1023 of the bending area BB or the first inorganic layer 1023 of the planar area CC, cracks are not easily generated, the invasion of water and oxygen is prevented, and the encapsulation effect of the display panel 100 is improved.
In this embodiment, the thickness of the first reinforcing portion 10231 may be larger than the thickness of the third reinforcing portion 10232, or the distribution density and the thickness of the first reinforcing portion 10231 in the first inorganic layer 1023 are set to be larger than the distribution density and the thickness of the third reinforcing portion 10232 in the first inorganic layer 1023 at the same time, so as to improve the flexibility of the first inorganic layer 1023 corresponding to the bending area BB and the planar area CC and avoid cracks in the first inorganic layer 1023, and the detailed configuration is not limited herein.
According to an embodiment of the present disclosure, referring to fig. 1, fig. 7 and fig. 10, the package structure 102 includes a first package layer 1 and a second package layer 2, the first package layer 1 includes a first inorganic layer 1021, a plurality of first reinforcing portions 10211 and a plurality of third reinforcing portions 10212, the plurality of first reinforcing portions 10211 are disposed at intervals on a side of the first inorganic layer 1021 corresponding to a bending region BB, the side being close to the light emitting layer 101, the plurality of third reinforcing portions 10212 are disposed at intervals on a side of the first inorganic layer 1021 corresponding to a planar region CC, the first reinforcing portions 10211 and the third reinforcing portions 10212 are made of graphene, and the first reinforcing portions 10211 and the third reinforcing portions 10212 are used for enhancing flexibility of the first inorganic layer 1021; the package structure 102 further includes a second package layer 2, the first package layer 2 includes a second inorganic layer 1023, the second reinforcing portion 10231 is located on a side of the second inorganic layer 1023 corresponding to the bending region BB, the side is close to the light-emitting layer 101, the first inorganic layer 1023 further includes a plurality of fourth reinforcing portions 10232 spaced corresponding to the planar region CC, the second reinforcing portion 10231 and the fourth reinforcing portions 10232 both include graphene, and the second reinforcing portion 10231 and the fourth reinforcing portions 10232 are used for enhancing flexibility of the second inorganic layer 1023; an organic layer 1022 is disposed between the first encapsulation layer 1 and the second encapsulation layer 2.
In this embodiment, the pitch between any two adjacent first reinforcing portions 10211 and any two adjacent third reinforcing portions 10212 is different, and the pitch between any two adjacent second reinforcing portions 10231 and the pitch between any two adjacent fourth reinforcing portions 10232 are different. Specifically, since the bending degree of the bending region BB of the display panel 100 is greater than the bending degree of the planar region CC, the pitch of the third reinforcing parts 10212 is greater than the pitch of the first reinforcing parts 10211, and the pitch of the fourth reinforcing parts 10232 is greater than the pitch of the fourth reinforcing parts 10232; in addition, if the display panel 100 is bent outward, that is, the encapsulation structure 102 is bent to a side away from the light emitting layer 101, the distribution density of the first reinforcing portion 10211 in the first inorganic layer 1021 in the bending area BB is greater than the distribution density of the second reinforcing portion 10231 in the second inorganic layer 1023, and the distribution density of the third reinforcing portion 10212 in the first inorganic layer 1021 in the planar area CC is greater than the distribution density of the fourth reinforcing portion 10232 in the second inorganic layer 1023, so that the flexibility of the first encapsulation layer 1 is greater than that of the second encapsulation layer 2, and therefore, cracks are not easily generated in both the first inorganic layer 1021 and the second inorganic layer 1023, the encapsulation effect of the display panel 100 is ensured, and the service life is prolonged. If the display panel 100 is bent inward, that is, the package structure 102 is bent toward a side close to the light emitting layer 101, the distribution density of the reinforcing portions in the first package layer 1 and the second package layer 2 is opposite to the above arrangement manner, but the obtained effect is the same, and will not be described in detail here.
In this embodiment, the thicknesses of the first reinforcing part 10211 and the third reinforcing part 10212 of the first inorganic layer 1021 and the thicknesses of the second reinforcing part 10231 and the fourth reinforcing part 10232 in the second inorganic layer 1023 can be set according to the bending direction of the display panel 100, so that the first inorganic layer 1021 and the second inorganic layer 1023 have good flexibility, and the specific arrangement manner is not limited herein.
In this embodiment, the thickness and distribution pitch of the first reinforcing part 10211 and the third reinforcing part 10212 of the first cover layer 1 can be changed simultaneously according to the bending degree of the display panel 100; the thickness and the distribution distance of the second reinforcing portion 10231 and the fourth reinforcing portion 10232 in the second encapsulation layer 2 make the first inorganic layer 1021 and the second inorganic layer 1023 have good flexibility and are not easy to generate cracks, and the specific arrangement mode is not limited specifically here.
In this embodiment, the first package layer 1 and the second package layer 2 may be provided with a reinforcing portion corresponding to the bending area BB and a reinforcing portion corresponding to the planar area CC; only one layer of the package layer may be provided with the reinforcing portion corresponding to the bending area BB and the reinforcing portion corresponding to the planar area CC, and the other layer may be provided with the reinforcing portion corresponding to the bending area BB, which is specifically set according to the bending condition of the display panel 100, without specific limitations.
In this embodiment, as shown in fig. 11, the first reinforcing parts 10211 and the third reinforcing parts 10212 are distributed in an array in the first inorganic layer 1021, and the distribution density of the first reinforcing parts 10211 is greater than the distribution density of the third reinforcing parts 10212, so that the flexibility of the bending region BB is greater than the flexibility of the planar region CC, the probability of cracks occurring in the first inorganic layer 1021 is reduced, and the packaging performance of the display panel 100 is improved. The second reinforcing part 10231 and the fourth reinforcing part 10232 may also be distributed in an array in the second inorganic layer 1023, which is not particularly limited.
In this embodiment, the first reinforcing part 10211 and the third reinforcing part 10212 may be randomly distributed in the first inorganic layer 1021, and the second reinforcing part 10231 and the fourth reinforcing part 10232 may also be randomly distributed in the second inorganic layer 1023, which is not limited herein.
The present application also proposes a display device, comprising the display panel 100 described above.
The application provides a display panel and a display device, wherein the display panel comprises a light-emitting layer and an encapsulation structure covering the light-emitting layer; the packaging structure comprises a first packaging layer;
the first encapsulation layer comprises a first inorganic layer and a plurality of first reinforcing parts, the first reinforcing parts are arranged on one side, close to the light emitting layer, of the first inorganic layer at intervals, and the first reinforcing parts comprise graphene. According to the display panel, the first reinforcing parts are arranged on one side, close to the light emitting layer, of the first packaging layer in the packaging structure at intervals, the first reinforcing parts comprise graphene, and the graphene with flexibility is arranged in the first packaging layer at intervals, so that on one hand, the flexibility of the first packaging layer in the packaging structure is enhanced, the first packaging layer is not prone to crack when the display panel is bent, and the packaging performance of the display panel is improved; on the other hand, the first reinforcing parts are arranged in the first packaging layer at intervals, so that when the display panel is bent, the stress applied to the first packaging layer can be released from the interval between any two adjacent first reinforcing parts, the bending resistance of the packaging structure is improved, and the bending strength of the display panel is improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The display panel and the display device provided by the embodiments of the present application are described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the embodiments above is only used to help understanding 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 (10)
1. The display panel is characterized by comprising a light emitting layer and an encapsulation structure covering the light emitting layer; the packaging structure comprises a first packaging layer;
the first encapsulation layer comprises a first inorganic layer and a plurality of first reinforcing parts, the first reinforcing parts are arranged on one side, close to the light emitting layer, of the first inorganic layer at intervals, and the first reinforcing parts comprise graphene.
2. The display panel according to claim 1, wherein a distance between any two adjacent first reinforcing parts is greater than or equal to 1 cm and less than or equal to 5 cm.
3. The display panel according to claim 1, wherein a thickness of any one of the first reinforcing portions is greater than or equal to 1 nm and less than or equal to 100 nm.
4. The display panel according to claim 1, wherein the encapsulation structure further comprises a second encapsulation layer, the second encapsulation layer comprises a second inorganic layer, and a plurality of second reinforcing parts, the plurality of second reinforcing parts are arranged at intervals on one side of the second inorganic layer close to the light emitting layer, and the second reinforcing parts comprise graphene;
an organic layer between the first encapsulation layer and the second encapsulation layer.
5. The display panel according to claim 4, wherein any two adjacent first reinforcing portions have an equal first pitch, any two adjacent second reinforcing portions have an equal second pitch, and the first pitch is different from the second pitch.
6. The display panel according to claim 5, wherein a thickness of the first reinforcement portion is different from a thickness of the second reinforcement portion.
7. The display panel of claim 6, wherein the first encapsulation layer has a thickness in a range of 200 nm to 700 nm, the organic layer has a thickness in a range of 1 μm to 20 μm, and the second encapsulation layer has a thickness in a range of 800 nm to 1600 nm.
8. The display panel according to claim 1, wherein the display panel comprises a planar area and a bending area, and the first reinforcing portion is located in the first encapsulation layer corresponding to the bending area; the first packaging layer further comprises a plurality of third reinforcing parts which are arranged at intervals corresponding to the planar area, and the third reinforcing parts comprise graphene;
wherein the distance between any two adjacent first reinforcing parts is different from the distance between any two adjacent third reinforcing parts.
9. The display panel according to claim 4 or 8, wherein the encapsulation structure further includes a second encapsulation layer, the second reinforcing portion is located in the second encapsulation layer corresponding to the bending region, the second encapsulation layer further includes a plurality of fourth reinforcing portions arranged at intervals corresponding to the planar region, and the fourth reinforcing portions include graphene;
wherein the distance between any two adjacent second reinforcing parts is different from the distance between any two adjacent fourth reinforcing parts.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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Application publication date: 20210629 |