CN110797377A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN110797377A
CN110797377A CN201910964571.XA CN201910964571A CN110797377A CN 110797377 A CN110797377 A CN 110797377A CN 201910964571 A CN201910964571 A CN 201910964571A CN 110797377 A CN110797377 A CN 110797377A
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China
Prior art keywords
groove
display panel
display
display area
layer
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CN201910964571.XA
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Chinese (zh)
Inventor
金江江
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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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Priority to CN201910964571.XA priority Critical patent/CN110797377A/en
Publication of CN110797377A publication Critical patent/CN110797377A/en
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/121Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/122Pixel-defining structures or layers, e.g. banks
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/124Insulating layers formed between TFT elements and OLED elements
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/126Shielding, e.g. light-blocking means over the TFTs

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a display panel and a display device, wherein the display panel comprises a display area and a non-display area surrounding the display area, the display panel also comprises a substrate, an encapsulation structure and a first groove body arranged in the substrate corresponding to the non-display area, wherein the encapsulation structure at least covers the substrate corresponding to the display area and the first groove body and fills the first groove body. According to the invention, the patterned groove body is arranged in the non-display area of the display panel, and the packaging structure covers and fills the groove body, so that the stress borne by the display panel during bending is effectively relieved, the element failure problem caused by film layer fracture or peeling is prevented, the adhesion between the packaging structure and the display panel interface is enhanced, and the display reliability of the display panel is effectively improved.

Description

Display panel and display device
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device having the same.
Background
The OLED has the advantages of high contrast, high response speed, self-luminescence, wide temperature application range and the like, so that the OLED gradually becomes a pet of the small-size display industry at present, however, with the continuous improvement of the product requirements of people, the characteristics can not meet the requirements, and meanwhile, the LCD/QLED technology is continuously improved, so that the development of the OLED is challenged.
Compared with other display technologies, flexible display is easier to realize by OLED, which is difficult to achieve by other technologies, and therefore, the development of flexible OLED technologies is urgent. The biggest challenge of the flexible OLED is that each film layer and a plurality of film layers on the display element are peeled off from each other due to bending or folding, once the peeling occurs, organic materials and active electrodes in the OLED display device are quickly oxidized to form gradually enlarged black spots, and therefore the stress, the adhesion and the like of the film layers are very important.
Disclosure of Invention
The invention provides a display panel and a display device, wherein in the process of bending or folding the display panel, a film layer in the display panel is stripped, so that devices in the plane are oxidized to form black spots, and the technical problem of influencing display is solved.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the invention provides a display panel, which comprises a display area and a non-display area surrounding the display area;
the display panel includes:
the display device comprises a substrate, wherein a first groove body surrounding the display area is arranged in the substrate corresponding to the non-display area; and
and the packaging structure is arranged on the substrate, at least covers the substrate corresponding to the display area and the first groove body, and fills the first groove body.
According to a preferred embodiment of the present invention, the first tank body includes: a continuous or discontinuous groove in a direction around the display area.
According to a preferred embodiment of the present invention, the shape of the discontinuous groove comprises at least one of: oval, circular, triangular, and quadrilateral.
According to a preferred embodiment of the present invention, the package structure includes a first inorganic layer, a first organic layer, and a second inorganic layer, which are sequentially stacked, wherein the first inorganic layer at least covers an inner wall of the first groove, and the first groove is filled with a first organic material layer.
According to a preferred embodiment of the present invention, the substrate further includes a second groove corresponding to the non-display area and surrounding the display area, the second groove is disposed on a side of the first groove away from the display area, and the encapsulation structure covers and fills the second groove.
According to a preferred embodiment of the present invention, the first and second channels each independently comprise: a continuous or discontinuous groove in a direction around the display area.
According to a preferred embodiment of the present invention, the discontinuous grooves of the first tank body and the discontinuous grooves of the second tank body are staggered.
According to a preferred embodiment of the present invention, the package structure includes a first inorganic layer, a first organic layer, and a second inorganic layer, which are sequentially stacked, wherein the first inorganic layer at least covers inner walls of the first tank and the second tank, the first tank is filled with a first organic material layer, and the second tank is filled with a second organic material layer.
According to a preferred embodiment of the present invention, the first organic material layer is in communication with the second organic material layer.
According to the above object of the present invention, there is provided a display device including the display panel as described above.
The invention has the beneficial effects that: according to the invention, the patterned groove body is arranged in the non-display area of the display panel, and the packaging structure covers and fills the groove body, so that the stress borne by the display panel during bending is effectively relieved, the element failure problem caused by film layer fracture or peeling is prevented, the adhesion between the packaging structure and the display panel interface is enhanced, and the display reliability of the display panel is effectively improved.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Fig. 2 is a schematic plane distribution diagram of a display panel according to an embodiment of the present invention.
Fig. 3 is a schematic plane distribution diagram of another display panel according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the invention.
Fig. 6 is a schematic plane distribution diagram of another display panel according to an embodiment of the invention.
Fig. 7 is a schematic plan view of another display panel according to an embodiment of the invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The invention aims at the technical problem that in the process of bending or folding the display panel, the film layer in the display panel is stripped, so that the devices in the plane are oxidized to form black spots, and the display is influenced, and the defects can be solved by the embodiment.
The embodiment of the invention provides a display panel, which comprises a display area and a non-display area surrounding the display area;
the display panel includes:
the display device comprises a substrate, wherein a first groove body surrounding the display area is arranged in the substrate corresponding to the non-display area; and
and the packaging structure is arranged on the substrate, at least covers the substrate corresponding to the display area and the first groove body, and fills the first groove body.
Specifically, as shown in fig. 1 and 2, the display panel 10 includes a display area 109 and a non-display area 110 surrounding the display area 109.
The display panel 10 further includes a substrate 101, and a first trough 102 surrounding the display area 109 is disposed in an area of the substrate 101 corresponding to the non-display area 110.
The display panel 10 further includes an encapsulation structure 103, the encapsulation structure 103 is disposed on the substrate 101, the encapsulation structure 103 at least covers the area of the substrate 101 corresponding to the display area 109 and the first slot 102, and the encapsulation structure 103 fills the first slot 102.
In the implementation and application process, each film layer and multiple film layers on the display panel are easy to peel due to bending or folding, once peeling occurs, organic materials and active electrodes in the display panel are oxidized quickly to form gradually enlarged black spots, and the packaging structure serves as a protection structure of the display panel, so that the stability of the packaging structure is very important.
Further, as shown in fig. 1, 2 and 3.
The first tank 102 includes: a continuous or discontinuous groove in a direction around said display area 109.
Wherein the first slot 102 may be a continuous groove along the direction surrounding the display area 109, as shown in fig. 2; the first channel 102 may also be a discontinuous groove in a direction around the display area 109, as shown in fig. 3.
And the shape of the discontinuous groove comprises at least one of: oval, circular, triangular, and quadrilateral.
In addition, the package structure 103 includes a first inorganic layer 1031, a first organic layer 1032, and a second inorganic layer 1033, which are stacked in sequence, wherein the first inorganic layer 1031 covers at least an inner wall of the first tank 102, and the first tank 102 is filled with a first organic material layer 104.
Note that the first organic material layer 104 may be the same as or different from the first organic layer 1032 in material.
And the material of the first organic layer 1032 includes at least one of: acrylic, epoxy, and silicone materials.
The material of the first inorganic layer 1031 includes SiNx, sion x, SiOx, Al2O3And the like.
The second inorganic layer 1033 includes at least one of: SiNx, SiONx, SiOx, and Al2O3
In addition, as shown in fig. 4 to 7, in another embodiment of the present invention, the substrate 201 further includes a second groove 2022 corresponding to the non-display region 210 and surrounding the display region 209, the second groove 2022 is disposed on a side of the first groove 2021 away from the display region 209, and the encapsulation structure 203 covers and fills the second groove 2022.
It should be noted that, one groove body (for example, the first groove body 2021) may be disposed on the base 201, and a plurality of groove bodies (for example, the first groove body 2021 and the second groove body 2022) may also be disposed on the base 201, where the number of the groove bodies is determined according to the requirement, and is not limited herein.
The first groove 2021 and the second groove 2022 each independently comprise: the groove is continuous or discontinuous along the direction surrounding the display area 209, and the groove of the first groove body 2021 and the groove of the second groove body 2022 have the same or different structures.
As shown in fig. 6, the first groove 2021 and the second groove 2022 are continuous grooves along the direction surrounding the display area 209.
As shown in fig. 7, the first groove 2021 and the second groove 2022 are discontinuous grooves along the direction surrounding the display region 209, and the discontinuous grooves of the first groove 2021 and the discontinuous grooves of the second groove 2022 are staggered.
And the shape of the discontinuous groove comprises at least one of: oval, circular, triangular, and quadrilateral.
In addition, the package structure 203 includes a first inorganic layer 2031, a first organic layer 2032, and a second inorganic layer 2033 stacked in sequence, wherein the first inorganic layer 2031 covers at least the inner walls of the first groove 2021 and the second groove 2022, the first groove 2021 is filled with a first organic material layer 2041, and the second groove 2022 is filled with a second organic material layer 2042.
The first organic material layer 2041 is connected to or spaced apart from the second organic material layer 2042, and the first organic material layer 2041, the second organic material layer 2042 and the first organic layer 2032 are made of the same material or different materials.
And the material of the first organic layer 2032 comprises at least one of: acrylic, epoxy and silicone materials.
The material of the first inorganic layer 2031 includes SiNx, sion x, SiOx, and Al2O3And the like.
The second inorganic layer 2033 comprises at least one of: SiNx, SiONx, SiOx, and Al2O3
As shown in fig. 4, the first organic material layer 2041 is in communication with the second organic material layer 2042.
As shown in fig. 5, the first organic material layer 2041 is spaced apart from the second organic material layer 2042.
The structure of the display panel is described in detail with reference to specific embodiments.
In one embodiment of the present invention, as shown in conjunction with FIGS. 1 and 2.
In the present embodiment, the display panel 10 includes a display area 109 and a non-display area 110 surrounding the display area 109.
The display panel 10 further includes a substrate 101, and a pixel defining layer is disposed in a region of the substrate 101 corresponding to the display region 109, wherein the pixel defining layer includes a pixel opening 108 and a light emitting layer 107 disposed in the pixel opening 108.
In addition, the display panel 10 further includes a first retaining wall 105 and a second retaining wall 106, wherein the first retaining wall 105 and the second retaining wall 106 are disposed on the substrate 101, and the first retaining wall 105 and the second retaining wall 106 are located at a junction of the display area 109 and the non-display area 110, wherein the height of the first retaining wall 105 is greater than that of the second retaining wall 106, and the first retaining wall 105 is made of the same material as or different from the second retaining wall 106.
A first trough 102 is disposed in an area of the substrate 101 corresponding to the non-display area 110, and the first trough 102 surrounds the display area 109.
In this embodiment, as shown in fig. 2, the first slot 102 is a continuous groove along a direction surrounding the display area 109.
The display panel 10 further includes an encapsulation structure 103, the encapsulation structure 103 is disposed on the substrate 101, the encapsulation structure 103 at least covers an area of the substrate 101 corresponding to the display area 109, and the first slot 102, and the encapsulation structure 103 fills the first slot 102.
Specifically, the package structure 103 includes a first inorganic layer 1031, a first organic layer 1032 and a second inorganic layer 1033, which are sequentially stacked, wherein the first inorganic layer 1031 covers a region of the substrate 101 corresponding to the display region 109, which includes the pixel opening 108, the light emitting layer 107, the first retaining wall 105, the second retaining wall 106 and an inner wall of the first slot 102.
The first organic layer 1032 covers a region of the substrate 101 corresponding to the display region 109, wherein the region includes a pixel opening 108 and a light emitting layer 107, and the first organic layer 1032 further covers the first retaining wall 105 and ends at the second retaining wall 106.
The first groove 102 is filled with a first organic material layer 104, and the first organic material layer 104 and the first organic layer 1032 are made of the same material.
The second inorganic layer 1033 covers the first inorganic layer 1031 and the first organic layer 1032, wherein the second inorganic layer 1033 covers a surface of the first organic material layer 104.
And the material of the first organic layer 1032 includes at least one of: acrylic, epoxy and silicone materials.
The material of the first inorganic layer 1031 includes SiNx, sion x, SiOx, Al2O3And the like.
The second inorganic layer 1033 includes at least one of: SiNx, SiONx, SiOx, and Al2O3
The display panel that this embodiment provided sets up first cell body in display panel's basement to make packaging structure cover and fill in first cell body, strengthened the bonding strength between packaging structure and the basement, prevented that the rete among the display panel from droing, improved display panel's reliability, and set up first organic material layer in first cell body, reduced the stress that display panel received at buckling or folding in-process.
In another embodiment of the present invention, as shown in fig. 3, the difference between the above embodiments is that the first slot 102 in this embodiment is a discontinuous groove along the direction surrounding the display area 109.
In this embodiment, the discontinuous groove has an elliptical shape.
In addition, the shape of the discontinuous groove also includes a circle, a triangle, a quadrangle and the like.
In yet another embodiment of the present invention, as shown in conjunction with FIGS. 4 and 6.
In the present embodiment, the display panel 20 includes a display region 209 and a non-display region 210 surrounding the display region 209.
The display panel 20 further includes a substrate 201, and a pixel definition layer is disposed in a region of the substrate 201 corresponding to the display region 209, wherein the pixel definition layer includes a pixel opening 208 and a light emitting layer 207 disposed in the pixel opening 208.
In addition, the display panel 20 further includes a first retaining wall 205 and a second retaining wall 206, wherein the first retaining wall 205 and the second retaining wall 206 are disposed on the substrate 201, and the first retaining wall 205 and the second retaining wall 206 are located at a junction of the display area 209 and the non-display area 210, wherein the height of the first retaining wall 205 is greater than that of the second retaining wall 206, and the first retaining wall 205 is made of the same material or different materials as the second retaining wall 206.
A first groove 2021 and a second groove 2022 are disposed in an area of the substrate 201 corresponding to the non-display area 210, and the first groove 2021 and the second groove 2022 are disposed around the display area 209, wherein the second groove 2022 is disposed on a side of the first groove 2021 away from the display area 209.
In this embodiment, as shown in fig. 6, the first groove 2021 is a continuous groove along the direction surrounding the display area 209, and the second groove 2022 is also a continuous groove along the direction surrounding the display area 209.
The display panel 20 further includes an encapsulation structure 203, the encapsulation structure 203 is disposed on the substrate 201, the encapsulation structure 203 at least covers an area of the substrate 201 corresponding to the display area 209, the first slot 2021 and the second slot 2022, and the encapsulation structure 203 fills the first slot 2021 and the second slot 2022.
Specifically, the package structure 203 includes a first inorganic layer 2031, a first organic layer 2032, and a second inorganic layer 2033 stacked in sequence, wherein the first inorganic layer 2031 covers a region of the substrate 201 corresponding to the display region 209, and includes a pixel opening 208, a light emitting layer 207, the first retaining wall 205, the second retaining wall 206, and inner walls of the first groove 2021 and the second groove 2022.
The first organic layer 2032 covers the substrate 201 in a region corresponding to the display region 209, including the pixel opening 208 and the light emitting layer 207, and the first organic layer 2032 further covers the first retaining wall 205 and ends at the second retaining wall 206.
The first groove 2021 is filled with a first organic material layer 2041, the second groove 2022 is filled with a second organic material layer 2042, and the first organic material layer 2041, the second organic material layer 2042, and the first organic layer 2032 are made of the same material.
In this embodiment, as shown in fig. 4, the first organic material layer 2041 and the second organic material layer 2042 are spaced apart from each other, that is, the first organic material layer 2041 and the second organic material layer 2042 are disposed in the first groove 2021 and the second groove 2022 independently from each other.
The second inorganic layer 2033 covers the first inorganic layer 2031 and the first organic layer 2032, wherein the second inorganic layer 2033 covers a surface of the first organic material layer 2041 and a surface of the second organic material layer 2042.
And the material of the first organic layer 2032 comprises at least one of: acrylic, epoxy and silicone materials.
The material of the first inorganic layer 2031 includes SiNx, sion x, SiOx, and Al2O3And the like.
The second inorganic layer 2033 comprises at least one of: SiNx, SiONx, SiOx, and Al2O3
The display panel that this embodiment provided, through set up first cell body and second cell body in display panel's basement, and make packaging structure cover and fill in first cell body and second cell body, the bonding strength between packaging structure and the basement has been strengthened, the rete among the display panel has been prevented from droing, display panel's reliability has been improved, and set up first organic material layer in first cell body, and be provided with the second organic material layer in the second cell body, the stress that display panel received at buckling or folding in-process has been reduced.
In another embodiment of the present invention, as shown in fig. 5, in the present embodiment, the substrate 201 includes a first groove 2021 and a second groove 2022, the first groove 2021 is filled with a first organic material layer 2041, and the second groove 2022 is filled with a second organic material layer 2042.
The difference between the present embodiment and the above embodiments is that the first organic material layer 2041 is communicated with the second organic material layer 2042, so that the organic filler in the first groove 2021 is connected with the organic filler in the second groove 2022 into a whole, which can further reduce the stress applied to the display panel during bending or folding, and further enhance the adhesion between the package structure 203 and the substrate 201.
In another embodiment of the present invention, as shown in fig. 7, in the present embodiment, the display panel 20 includes a display area 209 and a non-display area 210 surrounding the display area 209, and the non-display area 210 is provided with a first slot 2021 and a second slot 2022.
The difference between this embodiment and the above embodiments is that the first groove 2021 and the second groove 2022 are discontinuous grooves along the direction surrounding the display area 209.
And the discontinuous grooves of the first tank body 2021 and the discontinuous grooves of the second tank body 2022 are staggered with each other, and in this embodiment, the shape of the discontinuous grooves is oval.
In addition, the shape of the discontinuous groove also includes a circle, a triangle, a quadrangle and the like.
The embodiment of the invention also provides a display device, and the display device comprises the display panel, and the display device can be used for mobile phones, TVs, OLEDs and other flexible display devices.
And the display device that this embodiment provided is through setting up the recess in the basement for packaging structure covers and fills in the recess, has increased the bonding strength between packaging structure and the display panel, has prevented that the rete among the display device from droing, has improved display device's reliability, and simultaneously, the inside packing of recess has organic material, can reduce the stress that the display panel received when buckling.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims (10)

1. A display panel comprising a display area and a non-display area surrounding the display area;
the display panel includes:
the display device comprises a substrate, wherein a first groove body surrounding the display area is arranged in the substrate corresponding to the non-display area; and
and the packaging structure is arranged on the substrate, at least covers the substrate corresponding to the display area and the first groove body, and fills the first groove body.
2. The display panel of claim 1, wherein the first slot comprises: a continuous or discontinuous groove in a direction around the display area.
3. The display panel of claim 2, wherein the shape of the discontinuous groove comprises at least one of: oval, circular, triangular, and quadrilateral.
4. The display panel according to claim 1, wherein the encapsulation structure comprises a first inorganic layer, a first organic layer and a second inorganic layer, which are sequentially stacked, wherein the first inorganic layer at least covers an inner wall of the first groove, and the first groove is filled with a first organic material layer.
5. The display panel of claim 1, wherein the substrate further comprises a second slot corresponding to the non-display region and surrounding the display region, the second slot is disposed on a side of the first slot away from the display region, and the encapsulation structure covers and fills the second slot.
6. The display panel of claim 5, wherein the first and second channels each independently comprise: a continuous or discontinuous groove in a direction around the display area.
7. The display panel of claim 6, wherein the discontinuous grooves of the first trough body and the discontinuous grooves of the second trough body are staggered with each other.
8. The display panel according to claim 5, wherein the encapsulation structure comprises a first inorganic layer, a first organic layer and a second inorganic layer, which are sequentially stacked, wherein the first inorganic layer at least covers inner walls of the first groove and the second groove, the first groove is filled with a first organic material layer, and the second groove is filled with a second organic material layer.
9. The display panel according to claim 8, wherein the first organic material layer is in communication with the second organic material layer.
10. A display device characterized in that the display device comprises the display panel according to any one of claims 1 to 9.
CN201910964571.XA 2019-10-11 2019-10-11 Display panel and display device Pending CN110797377A (en)

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