CN109326740A - Display panel and preparation method thereof, display device - Google Patents
Display panel and preparation method thereof, display device Download PDFInfo
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- CN109326740A CN109326740A CN201811425980.4A CN201811425980A CN109326740A CN 109326740 A CN109326740 A CN 109326740A CN 201811425980 A CN201811425980 A CN 201811425980A CN 109326740 A CN109326740 A CN 109326740A
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- wrapping layer
- underlay substrate
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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
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
- H10K50/8445—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
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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
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
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- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention provides a kind of display panels and preparation method thereof, display device, the display panel includes: screen body, the screen body includes underlay substrate, the underlay substrate includes intermediate region and fringe region, the fringe region is provided with pits rampway structure, and the pits rampway structure is gradually reduced along the fringe region direction height；The side that the underlay substrate is provided with the pits rampway structure is arranged in encapsulating structure, the encapsulating structure, and at least part of pits rampway structure described in the edges cover of the encapsulating structure forms package edge structure；The side that the underlay substrate is provided with the pits rampway structure is arranged in first wrapping layer, first wrapping layer, and wraps up the junction of the package edge structure and the underlay substrate.Technical solution of the present invention can stop steam, oxygen to enter inside display panel, to improve the reliability of encapsulating structure.
Description
Technical field
The present invention relates to display fields, and in particular to a kind of display panel and preparation method thereof, display device.
Background technique
Organic electroluminescent LED (Organic Light-emitting Diode, OLED) display panel is due to having
The features such as self-luminous, high brightness, wide viewing angle, low energy consumption and deflection and be widely used in life with work in, but due to
The component of OLED display panel is poor to the patience of steam or oxygen, easily reacts with water oxygen, eventually leads to OLED display panel mistake
Effect.Therefore, improve the encapsulating structure of OLED display panel, just seem especially heavy to improve the package reliability of OLED display panel
It wants.
Summary of the invention
In view of this, can stop the embodiment of the invention provides a kind of display panel and preparation method thereof, display device
Steam, oxygen enter inside display panel, to improve the reliability of encapsulating structure, avoid display device due to reacting with water oxygen
Failure, and then improve the service life of display panel.
In a first aspect, the embodiment provides a kind of display panels, comprising: screen body, screen body includes underlay substrate,
Underlay substrate includes intermediate region and fringe region, and fringe region is provided with pits rampway structure, and pits rampway structure is along fringe region side
To being highly gradually reduced；The side that underlay substrate is provided with pits rampway structure is arranged in encapsulating structure, encapsulating structure, encapsulating structure
At least part of edges cover pits rampway structure forms package edge structure；First wrapping layer, the first wrapping layer are arranged in substrate
Substrate is provided with the side of pits rampway structure, and the junction of wrapping and encapsulating marginal texture and underlay substrate.
It in some embodiments of the invention, include water oxygen barrier material in the first wrapping layer；Water oxygen in first wrapping layer
Barrier material is selected from least one of silica, silicon nitride, aluminium oxide.
It in some embodiments of the invention, further include the second wrapping layer, the second wrapping layer wraps up the first wrapping layer, and the
The material of two wrapping layers is different from the first wrapping layer.
In some embodiments of the invention, the second wrapping layer is selected from diamond-like membrane material.
In some embodiments of the invention, the second wrapping layer is selected from titanium doped diamond-like membrane material.
In some embodiments of the invention, the height on surface of first wrapping layer far from underlay substrate is greater than or equal to centre
The height in region.
In some embodiments of the invention, encapsulating structure includes the first stacked inorganic layer, organic layer and the second inorganic layer,
Organic layer setting is inorganic between the second inorganic layer and within package edge structure first.
In some embodiments of the invention, pits rampway structure includes wave structure, meander line structure, curvilinear structures, step structure
One of or a variety of combinations.
Second aspect, the embodiment provides a kind of display devices, including display surface as described in relation to the first aspect
Plate.
The third aspect, the embodiment provides a kind of preparation methods of display panel, comprising: by underlay substrate
Fringe region is arranged to pits rampway structure, and wherein underlay substrate includes intermediate region and fringe region；Underlay substrate is provided with slope
Encapsulating structure is arranged in the side of road structure, wherein at least part of the edges cover pits rampway structure of encapsulating structure, forms encapsulation
Marginal texture；In the side that underlay substrate is provided with pits rampway structure, the first wrapping layer, the first wrapping layer wrapping and encapsulating edge are set
At least part of structure；And the second wrapping layer, the second wrapping layer are set in the side that underlay substrate is provided with pits rampway structure
Wrap up the first wrapping layer.
The embodiment of the invention provides a kind of display panels and preparation method thereof, display device, by underlay substrate
Pits rampway structure is arranged in fringe region, package edge structure is formed on pits rampway structure, and utilize the first wrapping layer wrapping and encapsulating side
Encapsulating structure is improved so as to stop steam, oxygen to enter inside display panel in the junction of edge structure and underlay substrate
Reliability avoids display device from failing because reacting with water oxygen, and then improves the service life of display panel.
Detailed description of the invention
Fig. 1 show the structural schematic diagram of the display panel of one embodiment of the invention offer.
Fig. 2 show another embodiment of the present invention provides display panel structural schematic diagram.
Fig. 3 show another embodiment of the present invention provides display panel structural schematic diagram.
Fig. 4 show the schematic flow chart of the preparation method of the display panel of one embodiment of the invention offer.
Fig. 5 show another embodiment of the present invention provides display panel preparation method schematic flow chart.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Fig. 1 show the structural schematic diagram of the display panel 100 of one embodiment of the invention offer.As shown in Figure 1, display surface
Plate 100 includes screen body 110, encapsulating structure 120 and the first wrapping layer 130.
Shielding body 110 includes underlay substrate 111, and underlay substrate 111 includes display area and non-display area, wherein viewing area
Domain is intermediate region, and non-display area is fringe region, and fringe region is provided with pits rampway structure 112；The setting of encapsulating structure 120 exists
Underlay substrate 111 is provided with the side of pits rampway structure 112, and at least one of the edges cover pits rampway structure 112 of encapsulating structure 120
Point, form package edge structure 124；The side that underlay substrate 111 is provided with pits rampway structure 112 is arranged in first wrapping layer 130,
And at least part of wrapping and encapsulating marginal texture 124.
Specifically, screen body 110 can be flexible screen body, at this point, display panel 100 can be flexible display panels, so as to
In in flexible display apparatus, display panel 100 to be specifically as follows active matrix organic light-emitting diode (Active-
Matrix Organic Light-Emitting Diode, AMOLED) flexible display panels.In the present embodiment, underlay substrate
111 can be flexible base board, the material of underlay substrate can be include polyimides, polycarbonate, polyacrylate, polyethers acyl
Any one or more of combination of imines.Certainly, the material of underlay substrate 111 can also can make underlay substrate for other
111 realize the material for being bending or folding over function, and which is not limited by the present invention.
In the present embodiment, the intermediate region of underlay substrate 111, which can be cascading, thin film transistor (TFT) (Thin
Film Transistor, TFT) and OLED device, as shown in Figure 1, OLED device may include multiple OLED structure units 141,
It can be separated by pixel defining layer 142 between two neighboring OLED structure unit 141.Encapsulating structure 120 is by OLED device
It is encapsulated in the intermediate region of underlay substrate 111, body 110 will be shielded and kept apart with external environment, avoid extraneous water oxygen invasion
And OLED device is destroyed, and then screen body 110 is avoided to fail.
Further, in order to avoid water oxygen from the side of encapsulating structure 120 enter screen body 110, i.e., from encapsulating structure 120 with
Enter screen body 110 at the contact surface of the fringe region of underlay substrate 111, can be set on the fringe region of underlay substrate 111
First wrapping layer 130.First wrapping layer 130 can closely be connect with encapsulating structure 120, and 130 wrapping and encapsulating of the first wrapping layer
The junction of structure and underlay substrate, avoids water oxygen from invading.First wrapping layer 130 (is with the visual angle of Fig. 1 in the lateral direction
Example) extension width can in the micron-scale, with improve the first wrapping layer 130 stop water oxygen effect.
In the present embodiment, the fringe region of underlay substrate 111 is provided with pits rampway structure 112, the side of pits rampway structure 112
Can be adjacent with the intermediate region of underlay substrate 111, the other side can extend to the boundary of underlay substrate 111.Such as Fig. 1 institute
Show, pits rampway structure 112 is gradually decreased by the height in intermediate region to the fringe region direction of underlay substrate 111, wherein encapsulation knot
At least part of the edges cover pits rampway structure 112 of structure 120 forms package edge structure 124.Package edge structure 124 can
To refer to the side structure of encapsulating structure 120, the i.e. structure of 120 height sloping portion of encapsulating structure.When the edge of underlay substrate 111
When region is provided with pits rampway structure 112, the first wrapping layer 130 is located on pits rampway structure 112, can optimize package structure in this way,
Be conducive to the first wrapping layer 130 deeply, fully wrapping and encapsulating marginal texture 124, and then can effectively stop water oxygen.First
Wrapping layer 130 can wrap up the partial region of package edge structure 124, which includes encapsulating structure 120 and substrate base
Encapsulation boundary between plate 111.
The embodiment of the invention provides a kind of display panels, and pits rampway structure is arranged by the fringe region in underlay substrate,
Package edge structure is formed on pits rampway structure, and utilizes the first wrapping layer wrapping and encapsulating marginal texture, so as to stop water
Vapour, oxygen enter inside display panel, improve the reliability of encapsulating structure, display device is avoided to fail because reacting with water oxygen,
And then improve the service life of display panel.
An embodiment according to the present invention, display panel 100 further include the second wrapping layer 150, and the setting of the second wrapping layer 150 exists
Underlay substrate 111 is provided with the side of pits rampway structure 112, and wraps up the first wrapping layer 130, and the first wrapping layer 130 includes eka-gold
Hard rock membrane material or drying material, the second wrapping layer 150 include diamond-like membrane material.
Specifically, stop water oxygen to further increase the package reliability of encapsulating structure 120, improve encapsulating structure 120
Effect, the periphery of the first wrapping layer 130 can be set the second wrapping layer 150, and the second wrapping layer 150 can be located at ramp and tie
On structure 112, and wrap up the first wrapping layer 130.It is similar with the first wrapping layer 130, the second wrapping layer 150 prolonging in the lateral direction
Stretching width can also in the micron-scale, and the width of the second wrapping layer 150 can be wider than the width of the first wrapping layer 130, with into one
Step stops water oxygen to cross the second wrapping layer 150 the first wrapping layer 130 of invasion.
Optionally, diamond-like membrane material may include titaniferous doped diamond-like film material, and drying material may include
Silica, silicon nitride, any material in aluminium oxide.
The material of first wrapping layer 130 can for diamond-film-like material, silica, silicon nitride, aluminium oxide or other
It can stop water oxygen or filter the material of water oxygen.The material of second wrapping layer 150 can also with the first the identical of wrapping layer 130
With difference.
The material of an embodiment according to the present invention, the second wrapping layer 150 can be diamond-film-like material, be specifically as follows
Titaniferous doped diamond-like film material, to stop water oxygen, the first wrapping layer 130 can be aluminium oxide or other dry woods at this time
Material prevents water oxygen from invading screen body 110 further to filter absorption of water oxygen.
An embodiment according to the present invention can be deposited with an insulating layer on pits rampway structure 112, and encapsulating structure 120 can lead to
Insulating layer is Nian Jie with pits rampway structure 112 between crossing, and the material of insulating layer can be same or similar with the first wrapping layer 130, this
The being completely embedded property between the first wrapping layer 130 and insulating layer can be improved in sample, and then improves the first wrapping layer 130 and ramp
Being completely embedded property between structure 112.At this point, the second wrapping layer 150 can wrap up the side of the first wrapping layer 130 and insulating layer
Boundary.
An embodiment according to the present invention, the structure of pits rampway structure 112 may include wave structure, meander line structure, curve knot
One of structure, step structure or a variety of combinations such as can be the combination of broken line and curve or the group of broken line and step
It closes, as long as the height of pits rampway structure 112 is downward trend on the whole.In other words, pits rampway structure 112 is certainly intermediate
The height change of region to fringe region can be following Three models: reduce always；It reduces and fair or raised combination；Or
The combination that person reduces, maintains an equal level and increase three.In three of the above mode, the height of the most edge of pits rampway structure 112 is lower than most
Height at intermediate region.
As shown in Figure 1, pits rampway structure 112 is curvilinear structures, the curvilinear structures are on a declining curve on the whole, wherein in order to
Convenient for the molding of the first wrapping layer 130 and the second wrapping layer 150, the tilt angle of 112 outermost of pits rampway structure can be close to 0 or
Equal to 0.Specifically, the minimum point of pits rampway structure 112 can be located at some position among pits rampway structure 112, pits rampway structure 112
The height of right end can be lower than the height of left end and be higher than the height of minimum point, and such pits rampway structure 112 is equivalent to one " hole ",
And the first wrapping layer 112 is by filling " hole " closely wrapping and encapsulating marginal texture 124.
An embodiment according to the present invention, the height of the first wrapping layer 130 are greater than or equal to the height of intermediate region.Specifically
Ground, the intermediate region that height of first wrapping layer 130 close to the surface of encapsulating structure 120 is greater than or equal to underlay substrate 111 are leaned on
The height on the surface of nearly encapsulating structure 120, the i.e. height of the top surface of the first wrapping layer 130 are greater than or equal to underlay substrate 111
The height of the top surface of intermediate region can be effectively avoided water oxygen from side in this way and invade screen body 110, improves the reliable of encapsulation
Property.
An embodiment according to the present invention, encapsulating structure 120 may include the first inorganic layer 121, organic layer 122, the second nothing
Machine layer 123, the first inorganic layer 121, organic layer 122 and the second inorganic layer 123 are sequentially laminated on underlay substrate 111, and this three
Layer structure can effectively stop front intrusion screen body 110 of the water oxygen from display panel 100.Specifically, the envelope of encapsulating structure 120
The marginal texture that marginal texture 124 includes the first inorganic layer 121 and the second inorganic layer 123 is filled, marginal texture also refers to nothing
The side structure of machine layer, i.e., the structure of inorganic layer height sloping portion.The edge of first inorganic layer 121 and the second inorganic layer 123
Pits rampway structure also can be set into structure, it can obliquely falls on underlay substrate 111, to cooperate with pits rampway structure 112, just
It is more deeply and close in the package structure of the first wrapping layer 130.
Fig. 2 show another embodiment of the present invention provides display panel 200 structural schematic diagram, Fig. 2 is the example of Fig. 1
Son.As shown in Fig. 2, display panel 200 includes underlay substrate 211, OLED structure unit 241, pixel defining layer 242, encapsulation knot
Structure 220, the first wrapping layer 230 and the second wrapping layer 250, wherein encapsulating structure 220 includes the first inorganic layer 221, organic layer
222, the second inorganic layer 223.In display panel 200, the pits rampway structure 212 on underlay substrate 211 is by 213 He of wave structure
What the combination of both step structures 214 was formed, wave structure 213 is located at the inside of step structure 214, and wave structure 213 is whole
On be it is inclined, the surface of step structure 214 is horizontal.First wrapping layer 230 is the Step-edge Junction that pits rampway structure 212 is arranged in
On structure 214, it is convenient for the molding of the first wrapping layer 230 in this way, improves the reliability of package structure.It is invaded to further extend water oxygen
Enter the path of display panel 200, the step structure 214 that multiple height constantly reduce can be set in the outside of wave structure 213.
Fig. 3 show another embodiment of the present invention provides display panel 300 structural schematic diagram, Fig. 3 is the example of Fig. 1
Son.As shown in figure 3, display panel 300 includes underlay substrate 311, OLED structure unit 341, pixel defining layer 342, encapsulation knot
Structure 320, the first wrapping layer 330 and the second wrapping layer 350, wherein encapsulating structure 320 includes the first inorganic layer 321, organic layer
322, the second inorganic layer 323.In display panel 300, the pits rampway structure 312 on underlay substrate 311 is by 313 He of meander line structure
What the combination of both step structures 314 was formed, wherein meander line structure 313 is located at the inside of step structure 314.Meander line structure 313
Surface be it is inclined, the surface of step structure 214 is horizontal, and the edge of encapsulating structure 320 falls in pits rampway structure at this time
312 313 part of meander line structure, when the partial region of such first wrapping layer, 330 wrapping and encapsulating marginal texture 324, encapsulation knot
Boundary between structure 320 and underlay substrate 311 can be located at the middle position (on vertical direction) of the first wrapping layer 330, thus
It may be implemented to extend further into and closely wrap up effect.
Fig. 4 show the schematic flow chart of the preparation method of the display panel of one embodiment of the invention offer.Such as Fig. 4 institute
Show, which includes the following contents.
410: the fringe region of underlay substrate being arranged to pits rampway structure, wherein underlay substrate includes intermediate region and edge
Region.
Pits rampway structure on underlay substrate can be configured by the methods of laser, photoetching or ashing.
The material of underlay substrate and the specific structure of pits rampway structure can participate in the description in above-mentioned Fig. 1, to avoid weight
Multiple, details are not described herein.
420: encapsulating structure being set in the side that underlay substrate is provided with pits rampway structure, wherein the edges cover of encapsulating structure
At least part of pits rampway structure forms package edge structure.
Pits rampway structure also can be set into package edge structure, and the gradient can be higher than the pits rampway structure on underlay substrate
The gradient, to realize closely encapsulation.
430: in the side that underlay substrate is provided with pits rampway structure, the first wrapping layer, the first wrapping layer wrapping and encapsulating side are set
At least part of edge structure.
First wrapping layer can stop side of the water oxygen from display panel, especially contact of the encapsulating structure with underlay substrate
Enter display panel at face, and the pits rampway structure of underlay substrate fringe region can optimize package structure, is conducive to the first packet
Deeply, fully wrapping and encapsulating marginal texture so as to improve the reliability of encapsulating structure improves making for display panel to covering layer
Use the service life.
The specific material of first wrapping layer can participate in the description in above-mentioned Fig. 1, and to avoid repeating, details are not described herein.
The embodiment of the invention provides a kind of preparation methods of display panel, pass through the fringe region setting in underlay substrate
Pits rampway structure forms package edge structure on pits rampway structure, and utilizes the first wrapping layer wrapping and encapsulating marginal texture, so as to
Enough steam, oxygen is stopped to enter inside display panel, improves the reliability of encapsulating structure, avoid display device because reacting with water oxygen
And it fails, and then improve the service life of display panel.
An embodiment according to the present invention, before 420, the preparation method further include: underlay substrate is provided with ramp and ties
The side of structure sets gradually thin film transistor (TFT) and OLED device.In addition, the preparation method can further include: in substrate base
Insulating layer between being arranged on the pits rampway structure of plate, wherein the material of insulating layer, and the effect of insulating layer may refer to Fig. 1
In description, to avoid repeating, details are not described herein.
An embodiment according to the present invention, the preparation method further include: set in the side that underlay substrate is provided with pits rampway structure
The second wrapping layer is set, the second wrapping layer wraps up the first wrapping layer.
Specifically, between being equipped between underlay substrate and encapsulating structure when insulating layer, the second wrapping layer also parcel office insulating layer
Boundary.
The material of second wrapping layer can participate in the description in above-mentioned Fig. 1, and to avoid repeating, details are not described herein.
An embodiment according to the present invention, 420 include: to set gradually first in the side that underlay substrate is provided with pits rampway structure
Inorganic layer, organic layer, the second inorganic layer, package edge structure include the marginal texture of the first inorganic layer and the second inorganic layer.
Specifically, in encapsulating structure the number of plies of inorganic layer and the number of plies of organic layer can be it is more, this can be according to reality
Border situation is set, and which is not limited by the present invention.
Fig. 5 show another embodiment of the present invention provides display panel preparation method schematic flow chart, Fig. 5 is
The example of Fig. 4, something in common repeat no more.As shown in figure 5, the preparation method includes the following contents.
510: the fringe region of underlay substrate being arranged to pits rampway structure, wherein underlay substrate includes intermediate region and edge
Region.
520: setting gradually thin film transistor (TFT) and OLED device in the side that underlay substrate is provided with pits rampway structure.
Specifically, thin film transistor (TFT) and OLED device are located at the intermediate region of underlay substrate.
530: insulating layer between being arranged on the pits rampway structure of underlay substrate.
Specifically, insulating layer can be formed by the methods of physical deposition, chemical deposition or magnetron sputtering.
540: setting gradually the first inorganic layer, organic layer, second inorganic in the side that underlay substrate is provided with pits rampway structure
Layer.
Specifically, the first inorganic layer, organic layer and the second inorganic layer are located at the top of thin film transistor (TFT) and OLED device, and
Wrap film transistor and OLED device.The marginal texture of first inorganic layer and the second inorganic layer covers at least the one of pits rampway structure
Part forms package edge structure.
550: in the side that underlay substrate is provided with pits rampway structure, the first wrapping layer, the first wrapping layer wrapping and encapsulating side are set
At least part of edge structure, the first wrapping layer include drying material.
Specifically, between the first wrapping layer is located on insulating layer, the material of the first wrapping layer and insulating layer can it is identical or
It is similar, to form close connection, and then improve the effect for stopping water oxygen.
560: in the side that underlay substrate is provided with pits rampway structure, the second wrapping layer, the first packet of the second wrapping layer package are set
Covering layer.
Specifically, the boundary of the second wrapping layer also parcel office insulating layer.
The embodiment of the invention also provides a kind of display device, which includes provided in an embodiment of the present invention above-mentioned
Any display panel, the principle which solves the problems, such as is similar to aforementioned display panel, therefore, the reality of the display device
The implementation that may refer to aforementioned display panel is applied, repeating place, details are not described herein.
Specifically, which can be any production having a display function such as mobile phone, computer, navigator, television set
Product or component.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, made any modification, equivalent replacement etc. be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of display panel characterized by comprising
Shield body, the screen body includes underlay substrate, and the underlay substrate includes intermediate region and fringe region, the fringe region
It is provided with pits rampway structure, the pits rampway structure is gradually reduced along the fringe region direction height；
The side that the underlay substrate is provided with the pits rampway structure, the encapsulation is arranged in encapsulating structure, the encapsulating structure
At least part of pits rampway structure described in the edges cover of structure forms package edge structure；
First wrapping layer, the side that the underlay substrate is provided with the pits rampway structure is arranged in first wrapping layer, and wraps
Wrap up in the junction of the package edge structure and the underlay substrate.
2. display panel according to claim 1, which is characterized in that include that water oxygen obstructs material in first wrapping layer
Material；Water oxygen barrier material in first wrapping layer is selected from least one of silica, silicon nitride, aluminium oxide.
3. display panel according to claim 1 or 2, which is characterized in that it further include the second wrapping layer, second package
Layer wraps up first wrapping layer, and the material of second wrapping layer is different from first wrapping layer.
4. display panel according to claim 3, which is characterized in that second wrapping layer is selected from diamond-like membrane material
Material.
5. display panel according to claim 4, which is characterized in that second wrapping layer is selected from titanium doped diamond-like
Membrane material.
6. display panel according to any one of claim 1 to 5, which is characterized in that first wrapping layer is far from institute
The height for stating the surface of underlay substrate is greater than or equal to the height of the intermediate region.
7. display panel according to any one of claim 1 to 5, which is characterized in that the encapsulating structure includes stacked
The first inorganic layer, organic layer and the second inorganic layer, the organic layer is arranged in described first inorganic and described second inorganic layer
Between and be located at the package edge structure within.
8. display panel according to any one of claim 1 to 5, which is characterized in that the pits rampway structure includes wave
One of structure, meander line structure, curvilinear structures, step structure or a variety of combinations.
9. a kind of display device characterized by comprising
Such as display panel described in any item of the claim 1 to 8.
10. a kind of preparation method of display panel characterized by comprising
The fringe region of underlay substrate is arranged to pits rampway structure, wherein the underlay substrate includes intermediate region and the edge
Region；
Encapsulating structure is set in the side that the underlay substrate is provided with the pits rampway structure, wherein the edge of the encapsulating structure
At least part of the pits rampway structure is covered, package edge structure is formed；
The first wrapping layer is set in the side that the underlay substrate is provided with the pits rampway structure, first wrapping layer wraps up institute
State at least part of package edge structure；And the underlay substrate is provided with the side setting second of the pits rampway structure
Wrapping layer, second wrapping layer wrap up first wrapping layer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113439349A (en) * | 2019-02-15 | 2021-09-24 | 三星显示有限公司 | Display panel |
| CN114420861A (en) * | 2022-01-04 | 2022-04-29 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
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