CN109256486A - A kind of display device and preparation method thereof - Google Patents
A kind of display device and preparation method thereof Download PDFInfo
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- CN109256486A CN109256486A CN201811058622.4A CN201811058622A CN109256486A CN 109256486 A CN109256486 A CN 109256486A CN 201811058622 A CN201811058622 A CN 201811058622A CN 109256486 A CN109256486 A CN 109256486A
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- blocking portion
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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
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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
- H10K50/842—Containers
- H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention provides a kind of display device and preparation method thereof, and the display device includes: display panel, and the display panel includes display area and the non-display area positioned at the display area periphery；Barricade is prepared on the display panel around the display area；Thin-film encapsulation layer is prepared on the display panel, including the inorganic layer and organic layer being stacked；Wherein, the barricade includes blocking portion and distributary division, the blocking portion surrounds the display area, the distributary division is located in the annular region that the blocking portion boundary and the display area boundary are formed, the distributary division combines to form split channel with the blocking portion, is stopped and is shunted to the marginal portion to the organic layer.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of display device and preparation method thereof.
Background technique
OLED is considered as the most promising technology of field of flexible display, but organic material is susceptible to water oxygen and invades
The characteristics of erosion, still constrains the service life of OLED device.Therefore, effective thin-film package (TFE) technology to flexible OLED devices extremely
It closes important.Up to the present, mainstream is had become to carry out protection to OLED device using organic/inorganic thin film stack
Thin-film package mode.Wherein, inorganic layer mainly plays a part of to stop extraneous water oxygen invasion, and organic layer mainly plays cladding impurity
Grain (particle), planarization and the effect of release membranes inter-laminar stress.Material used in TFE organic layer is prepared at present usually to have
Have a high fluidity, however this also resulted in while improving and coating impurity particle efficiency organic layer edge overflow (overflow) and
The phenomenon that " inside contracting ", and there are the risk of the linearity (linearity) difference, eventually lead to package failure.
Therefore, the prior art is defective, needs to improve.
Summary of the invention
The present invention provides a kind of display device and preparation method thereof, and the organic layer being able to suppress in thin-film encapsulation layer overflows nothing
Machine layer boundary, while the edge linearity of organic layer entirety can be improved, to reduce in bending process thin-film encapsulation layer on side
The risk ruptured at edge.
To solve the above problems, technical solution provided by the invention is as follows:
The present invention provides a kind of display device, comprising:
Display panel, the display panel include display area and the non-display area positioned at the display area periphery
Domain；
Barricade is prepared on the display panel around the display area；
Thin-film encapsulation layer is prepared on the display panel, including the inorganic layer and organic layer being stacked；
Wherein, the barricade includes blocking portion and distributary division, and the blocking portion surrounds the display area, the distributary division
In the annular region that the blocking portion boundary and the display area boundary are formed, the distributary division and the blocking portion group
Conjunction forms split channel, is stopped and is shunted to the marginal portion to the organic layer.
In display device of the invention, the edge of the inorganic layer of the thin-film encapsulation layer extends to the corresponding resistance
The position of stopper, the edge of the organic layer is corresponding to be located in the annular region.
In display device of the invention, the blocking portion is closed type, the distributary division be it is non-closed, it is described
Distributary division includes at least two spaced dividing cells.
In display device of the invention, the dividing cell surrounds the setting at the display area interval, adjacent two institute
It states the gap between dividing cell and between the dividing cell and the blocking portion and forms the split channel.
In display device of the invention, the dividing cell is from the blocking portion boundary between the display area boundary
Every setting, and it is dislocatedly distributed.
In display device of the invention, the spacing between adjacent two dividing cell between 0.1um~2um,
Form the split channel；The height of the dividing cell between 0.5um~5um, the width of the dividing cell between
Between 0.5um~15um.
In display device of the invention, the distributary division and the organic layer same layer are prepared on the inorganic layer, and
The distributary division is corresponding to be located in the annular region.
In display device of the invention, distance of the blocking portion apart from the display area boundary between 300um extremely
Between 900um, the height of the blocking portion is between 0.5um~20um, and the width of the blocking portion is between 0.5um~40um
Between.
The present invention also provides a kind of preparation methods of display device, the described method comprises the following steps:
Step S10, provides a display panel, and the display panel includes display area and is located at outside the display area
The non-display area enclosed；
Step S20 is formed at least in the non-display area of the display panel close to the side of the display area
One closed type blocking portion around the display area；
Step S30 is prepared in the annular region that the blocking portion boundary and the display area surrounded by edges are constituted
Non-closed distributary division, the distributary division include spaced dividing cell, and the distributary division combines shape with the blocking portion
At split channel；
Step S40, is packaged processing procedure, formed on said display panel by inorganic layer be stacked with organic layer it is thin
Film encapsulated layer；Wherein, the edge of the inorganic layer extends to the position of the corresponding blocking portion, and the edge of the organic layer is corresponding
In the annular region.
In the preparation method of display device of the invention, the dividing cell is arranged around the display area interval,
Between adjacent two dividing cell and the gap between the dividing cell and the blocking portion forms the split channel,
The blocking portion and the distributary division are all made of InkJet printing processes preparation.
The invention has the benefit that compared to existing display device, display device provided by the invention and its preparation
Method, by InkJet printing processes, in the non-display area of display panel, close to display area side, preparation has split channel
Barrier wall structure, and by the pattern of relative position and distributary division between the blocking portion and distributary division of regulation barricade to shunt
The capillary phenomenon that can promote uniformly to spread is generated in channel.By means of this barrier wall structure, thin-film encapsulation layer can inhibited
In organic layer overflow inorganic layer boundary on the basis of simultaneously improve its edge linearity, this is conducive to having in thin-film encapsulation layer
Machine layer sufficiently wraps up the impurity particle (particle) of display area edge；Also help display area edge
The stress release of inorganic layer in thin-film encapsulation layer, to reduce inorganic layer in bending process in thin-film encapsulation layer in viewing area
The risk that domain edge ruptures, and then improve the stability of display device.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of invention
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the top view for the display device that the embodiment of the present invention one provides；
Fig. 2A~2E is the preparation flow schematic diagram for the display device that the embodiment of the present invention one provides；
Fig. 3 is that the barricade for the display device that the embodiment of the present invention one provides shunts schematic diagram；
Fig. 4 is display device top view provided by Embodiment 2 of the present invention；
Fig. 5 is the display device top view that the embodiment of the present invention three provides；
Fig. 6 is the preparation method flow chart of display device provided in an embodiment of the present invention.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the present invention
Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.The similar unit of structure is with being given the same reference numerals in the figure.
The present invention is directed to the display device of the prior art, and there are the organic layer edge " spilling " of thin-film encapsulation layer and " inside contracting "
The phenomenon that, and there are the risk of organic layer line degree difference, the technical issues of eventually leading to package failure, the present embodiment can be solved
The certainly defect.
As shown in Figure 1, the top view of the display device provided for the embodiment of the present invention one.The display device includes: aobvious
Show panel, the display panel includes underlay substrate 10 and the organic luminous layer 20 that is prepared on the underlay substrate 10；Institute
The corresponding position that organic luminous layer 20 is stated in the underlay substrate 10 is display area, is non-positioned at the display area periphery
Display area；Barricade is prepared on the underlay substrate 10 around the display area；The barricade includes blocking portion 40 and divides
Stream portion, the distributary division include multiple spaced dividing cells 50；The blocking portion 40 surrounds the display area, described
Distributary division is located in the annular region that 40 boundary of blocking portion and 20 boundary of organic luminous layer are formed, the blocking portion 40
For closed type, the distributary division is non-closed.The dividing cell 50, which combines formation with the blocking portion 40 and shunts, leads to
Road；Thin-film encapsulation layer (does not indicate) in figure, is prepared on the underlay substrate 10, the thin-film encapsulation layer includes being stacked
Inorganic layer and organic layer；The edge of the inorganic layer of the thin-film encapsulation layer extends to the position of the corresponding blocking portion 40,
The edge of the organic layer is corresponding to be located in the annular region.
As shown in Fig. 2A~2E, for the preparation flow schematic diagram for the display device that the embodiment of the present invention one provides.Such as Fig. 2A
It is shown, the underlay substrate 10 for preparing organic luminous layer 20 is transferred in IJP (inkjet printing) chamber first, in the substrate
In the non-display area of the display area periphery of the corresponding organic luminous layer 20 of substrate 10, it is prepared with around the organic light emission
The closed type blocking portion 40 of layer 20.Distance of the blocking portion 40 apart from the display area edge between 300um to 900um it
Between, preferably between 500um~700um.The cross sectional shape of the blocking portion 40 includes but is not limited to semicircle, semiellipse
Shape, circle etc..The height of the blocking portion 40 is between 0.5um~20um, preferably between 3um~10um；Individually
The width of the blocking portion 40 is between 0.5um~40um, preferably between 10um~20um.The blocking portion 40
Constituent material includes but is not limited to acrylate (Acrylic), epoxy resin, dimethyl silicone polymer, polyacrylate, gathers
One of carbonic acid lipid etc. or more than one.
It as shown in Figure 2 B, can be in the blocking portion 40 and the organic luminous layer 20 (display area) by IJP technique
Distributary division is set in the annular region of the surrounded composition in edge, and the distributary division includes multiple spaced dividing cells
50.The dividing cell 50 surrounds the setting at the display area interval, between adjacent two dividing cell 50 and described
Gap between dividing cell 50 and the blocking portion 40 forms split channel (split channel such as figure with capillary phenomenon
Shown in 3).For stopping to the organic layer in thin-film encapsulation layer, the dividing cell 50 is used for institute the blocking portion 40
The marginal portion for stating organic layer is shunted.
The non-closed ring structure that the preferably several isolated hemispheres of distributary division are constituted；In the distributary division
The dividing cell 50 between spacing between 0.1um~2um, being capable of shape preferably between 0.5um~1um
At the split channel with capillary phenomenon.The height of the single dividing cell 50 is between 0.5um~5um, preferably
For between 1um~2um；The width of the single dividing cell 50 is between 0.5um~15um, preferably between 1um
Between~10um.
The constituent material of the dividing cell 50 include but is not limited to acrylate, epoxy resin, dimethyl silicone polymer,
One of polyacrylate, polycarbonate etc. or more than one.The blocking portion 40 and the dividing cell 50 are compound
Composition has the barricade of the split channel.
As shown in Figure 2 C, it is packaged processing procedure after the completion of the barricade preparation, passes through the gas phase of plasma enhanced chemical
Deposit (Plasma Enhanced Chemical Vapor Deposition, PECVD), Atomic layer deposition (atomic
Layer deposition, ALD), pulse laser deposition (Pulsed Laser Deposition, PLD) or sputter
(sputter) etc. techniques prepare the first inorganic layer 301 on the organic luminous layer 20 to play the function of barrier water oxygen.It is preferred that
, first inorganic layer 301 with a thickness of 1um~2um.The constituent material of first inorganic layer 301 includes but is not limited to
Al2O3、TiO2, SiNx, SiCNx, SiOx etc..Wherein, it is remote to extend to the blocking portion 40 for the edge of first inorganic layer 301
From described and 20 side of organic luminous layer boundary position.
As shown in Figure 2 D, one is prepared on first inorganic layer 301 by the techniques such as IJP or coating (coating)
Layer organic layer 302, the marginal portion of the organic layer 302 is corresponding to be located in the annular region；Due to the blocking portion 40
Barrier effect, the organic layer 302 can be blocked within the scope of the encirclement of the blocking portion 40, and the organic layer 302 is avoided to send out
The phenomenon that raw " spilling " described first inorganic layer 301.And first inorganic layer 301 is in the preparation by the pattern shadow of the barricade
It rings, pattern similar with the barricade is formed in the position of the correspondence barricade, therefore, because the distributary division is existing with capillary
The split channel of elephant so that the marginal portion of the organic layer 302 is shunted with the split channel, and is flow to described
Blocking portion 40 close to 20 side of organic luminous layer boundary position, to make 302 edge of organic layer that will not occur
" inside contracting " phenomenon is conducive to the organic layer 302 in thin-film encapsulation layer to the impurity particle of the display area edge
(particle) it is sufficiently wrapped up；Also help the equal stress of first inorganic layer 301 of the display area edge
Release.
The constituent material of the organic layer 302 include but is not limited to acrylate, epoxy resin, dimethyl silicone polymer,
One of polyacrylate, polycarbonate etc. or more than one.
As shown in Figure 2 E, prepared on the organic layer 302 by techniques such as PECVD, ALD, PLD or Sputter
Two inorganic layers 303 form the thin-film encapsulation layer 30 of " inorganic layer-organic layer-inorganic layer " structure.Second inorganic layer 303
Prepare it is consistent with the preparation process of first inorganic layer 301, edge all extend to the blocking portion 40 far from described in it is organic
The boundary position of 20 side of luminescent layer.And first inorganic layer 301 with second inorganic layer 303 in the corresponding blocking portion
40 position is in contact with each other, that is to say, that the organic layer 302 is wrapped in first inorganic layer 301 and second nothing
Between machine layer 303.
The constituent material of second inorganic layer 303 includes but is not limited to Al2O3、TiO2, SiNx, SiCNx, SiOx etc..It is excellent
Choosing, second inorganic layer 303 with a thickness of 1um~2um.
As shown in figure 3, the barricade of the display device provided for the embodiment of the present invention one shunts schematic diagram, wherein arrow direction
Indicate the organic layer material in the thin-film encapsulation layer along the dispersal direction of the split channel.
As shown in figure 4, being display device top view provided by Embodiment 2 of the present invention, the present embodiment and one phase of embodiment
Seemingly, difference is: distributary division 50 includes multiple the first dividing cells 501 around display area distribution and multiple encloses
The second dividing cell 502 around display area distribution is composed, and adjacent two first dividing cell 501 and adjacent
The split channel of two second dividing cells 502 mutually staggers, to increase shunting effect.That is, the institute of the present embodiment
It states dividing cell and is successively arranged in a ring to the boundary interval of the display area from the boundary of the blocking portion 40.
In the present embodiment, the height of first dividing cell 501 and second dividing cell 502, which is both preferably, is situated between
Between 1um~2um, the spacing between the second dividing cell 502 described in adjacent two first dividing cell 501/ is preferred
To form the split channel with capillary phenomenon between 0.5um~1um；First dividing cell 501 and described
The constituent material of second dividing cell 502 includes but is not limited to acrylate, epoxy resin, dimethyl silicone polymer, polypropylene
One of esters of gallic acid, polycarbonate etc. or more than one.And the material of the blocking portion 40, the thin-film encapsulation layer,
Thickness and preparation process are identical as the description in previous embodiment one respectively.
As shown in figure 5, for the display device top view that the embodiment of the present invention three provides, the present embodiment and one phase of embodiment
Seemingly, difference is: the dividing cell 50 is located on the first inorganic layer 301 of thin-film encapsulation layer 30.The i.e. described distributary division with
302 same layer of organic layer of the thin-film encapsulation layer 30 is prepared on first inorganic layer 301, and distributary division correspondence is located at
In the annular region.In this way due to being located on the same floor, the distributary division to the shunting effect of the organic layer 302 more preferably.
In the present embodiment, the dividing cell 50 is highly preferred between 1um~2um；Adjacent two described points
The spacing of unit 50 is flowed preferably between 0.5um~1um, forms the split channel with capillary phenomenon；The shunting is single
The constituent material of member 50 includes but is not limited to acrylate, epoxy resin, dimethyl silicone polymer, polyacrylate, poly- carbon
One of sour lipid etc. or more than one.The dividing cell 50 can also be prepared in the thin-film encapsulation layer 30 other are inorganic
On layer, to be shunted to the organic layer prepared with its same layer.And the material of the blocking portion 40, the thin-film encapsulation layer,
Thickness and preparation process are identical as the description in previous embodiment one respectively.
The present invention also provides a kind of preparation methods of display device, as shown in fig. 6, the described method comprises the following steps:
Step S10, provides a display panel, and the display panel includes display area and is located at outside the display area
The non-display area enclosed；
Wherein, shown display panel includes underlay substrate, and is sequentially prepared in the film crystal on shown underlay substrate
Other conventional films such as tube layer, organic luminous layer.
Step S20 is formed at least in the non-display area of the display panel close to the side of the display area
One closed type blocking portion around the display area；
Wherein, the blocking portion is prepared using InkJet printing processes, specifically can refer to the description in above structure embodiment,
Details are not described herein again.
Step S30 is prepared in the annular region that the blocking portion boundary and the display area surrounded by edges are constituted
Non-closed distributary division, the distributary division include spaced dividing cell, and the distributary division combines point with the blocking portion
Circulation road；
Wherein, the distributary division is prepared using InkJet printing processes, and the dividing cell surrounds the display area interval
It is arranged, between adjacent two dividing cell and the gap between the dividing cell and the blocking portion forms the shunting
Channel.The split channel has capillary phenomenon, can shunt to the marginal portion of the organic layer in thin-film encapsulation layer, so that
The edge of the organic layer has the good linearity.
Step S40, is packaged processing procedure, formed on said display panel by inorganic layer be stacked with organic layer it is thin
Film encapsulated layer；Wherein, the edge of the inorganic layer extends to the position of the corresponding blocking portion, and the edge of the organic layer is corresponding
In the annular region.
It specifically can refer to the description in above-described embodiment one, details are not described herein again.
Display device provided by the invention and preparation method thereof, by InkJet printing processes display panel non-display area
Domain close to display area side preparation have split channel barrier wall structure, and by regulation barricade blocking portion and distributary division it
Between relative position and the pattern of distributary division can promote the capillary phenomenon that uniformly spreads to generate in split channel.It can be with
Improve its edge linearity simultaneously on the basis of inhibiting the organic layer in thin-film encapsulation layer to overflow inorganic layer boundary, reduces bending
The risk that inorganic layer in thin-film encapsulation layer is ruptured in display area edge in the process, and then improve the steady of display device
It is qualitative.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (10)
1. a kind of display device characterized by comprising
Display panel, the display panel include display area and the non-display area positioned at the display area periphery；
Barricade is prepared on the display panel around the display area；
Thin-film encapsulation layer is prepared on the display panel, including the inorganic layer and organic layer being stacked；
Wherein, the barricade includes blocking portion and distributary division, and the blocking portion surrounds the display area, and the distributary division is located at
In the annular region that the blocking portion boundary and the display area boundary are formed, the distributary division combines shape with the blocking portion
At split channel, is stopped and shunted to the marginal portion to the organic layer.
2. display device according to claim 1, which is characterized in that the edge of the inorganic layer of the thin-film encapsulation layer
The position of the corresponding blocking portion is extended to, the edge of the organic layer is corresponding to be located in the annular region.
3. display device according to claim 1, which is characterized in that the blocking portion is closed type, the distributary division
To be non-closed, the distributary division includes at least two spaced dividing cells.
4. display device according to claim 3, which is characterized in that the dividing cell surrounds the display area interval
Setting, between the adjacent two dividing cell and gap between the dividing cell and the blocking portion forms described point
Circulation road.
5. display device according to claim 4, which is characterized in that the dividing cell is from the blocking portion boundary to institute
The setting of display area boundary interval is stated, and is dislocatedly distributed.
6. display device according to claim 4, which is characterized in that spacing between adjacent two dividing cell between
Between 0.1um~2um, the split channel is formed；The height of the dividing cell is between 0.5um~5um, the shunting
The width of unit is between 0.5um~15um.
7. display device according to claim 1, which is characterized in that the distributary division is prepared in the organic layer same layer
On the inorganic layer, and the distributary division is corresponding in the annular region.
8. display device according to claim 1, which is characterized in that the blocking portion is apart from the display area boundary
Distance is between 300um between 900um, and the height of the blocking portion is between 0.5um~20um, the width of the blocking portion
Between 0.5um~40um.
9. a kind of preparation method of display device, which is characterized in that the described method comprises the following steps:
Step S10, provides a display panel, and the display panel includes display area and positioned at the display area periphery
Non-display area；
Step S20 forms at least one close to the side of the display area in the non-display area of the display panel
Closed type blocking portion around the display area；
Step S30 prepares non-close in the annular region that the blocking portion boundary and the display area surrounded by edges are constituted
Box-like distributary division, the distributary division include spaced dividing cell, and the distributary division is combined with the blocking portion to be formed point
Circulation road；
Step S40, is packaged processing procedure, is formed sealed by the film that inorganic layer and organic layer are stacked on said display panel
Fill layer；Wherein, the edge of the inorganic layer extends to the position of the corresponding blocking portion, and the edge correspondence of the organic layer is located at
In the annular region.
10. preparation method according to claim 9, which is characterized in that the dividing cell surrounds between the display area
Between setting, adjacent two dividing cell and the gap between the dividing cell and the blocking portion forms described point
Circulation road, the blocking portion and the distributary division are all made of InkJet printing processes preparation.
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| CN114583077A (en) * | 2022-02-17 | 2022-06-03 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
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