CN207664046U - A kind of encapsulating structure and flexible display screen - Google Patents
A kind of encapsulating structure and flexible display screen Download PDFInfo
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- CN207664046U CN207664046U CN201721920322.3U CN201721920322U CN207664046U CN 207664046 U CN207664046 U CN 207664046U CN 201721920322 U CN201721920322 U CN 201721920322U CN 207664046 U CN207664046 U CN 207664046U
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Abstract
The encapsulating structure and flexible display screen of the utility model, easily damaged technical problem when for overcoming display screen encapsulation function layer to bend.Including encapsulation function layer, snap-fit layer is set in the encapsulation function layer, the snap-fit layer is arranged in overflexing region, the snap-fit layer arches upward to form the portion of arching upward backwards to the encapsulation function layer, and the orthographic projection of the portion in the encapsulation function layer of arching upward at least covers orthographic projection of the overflexing region in the encapsulation function layer.Arch upward portion elastic stress variation and the bending angle positive correlation of encapsulation function layer, the stress born when encapsulation function layer bending can be offset in due course, the wider bending angle of encapsulation function layer and bending deviation is adapted to, ensure that the service life of encapsulating structure.
Description
Technical field
The utility model is related to display screen, more particularly to a kind of encapsulating structure and flexible display screen.
Background technology
Current OLED (Organic Light Emitting Diode Organic Light-Emitting Diode) folding display screen processing procedure
In, the formation of generally use TFE thin film encapsulation technologies includes the encapsulated layer of each functional film layer, due to each film layer physical ductility, bullet
Property and internal stress feature difference, easily occur falling off when display screen being caused to bend, tomography, stripping phenomena such as so that material it
Between structural failure, influence normal use.Usual OLED folding display screens include the flexible base board being sequentially overlapped, OLED device layer and
Encapsulated layer, when display screen is bent to encapsulated layer in each film layer part stretch drawing exhibition it is most strong, be more easy to damage.
Utility model content
In view of this, the utility model embodiment provides a kind of encapsulating structure and flexible display screen, for overcoming display
Encapsulated layer easily damaged technical problem when screen bending.
The encapsulating structure of the utility model embodiment, including encapsulation function layer, setting elasticity is suitable in the encapsulation function layer
With layer, in overflexing region, the snap-fit layer arches upward shape backwards to the encapsulation function layer for snap-fit layer setting
At the portion of arching upward, the orthographic projection of the portion in the encapsulation function layer of arching upward at least covers the overflexing region in the envelope
Fill the orthographic projection in functional layer.
Arch upward described in the utility model embodiment portion extending direction and the overflexing region extending direction one
It causes.
The toughness of the toughness subsection setup of encapsulation function layer described in the utility model embodiment, the portion that arches upward is maximum.
The toughness of snap-fit layer described in the utility model embodiment by the two lateral homonymy of portion that arches upward the bullet
The edge direction of property adaptation layer is successively decreased.
Snap-fit layer described in the utility model embodiment uses elastopolymer material, the snap-fit
The elasticity modulus of layer is suitable with the deformational stress of the encapsulation function layer.
The first overflexing region and second is included at least on snap-fit layer described in the utility model embodiment excessively
Region is bent, first portion and second that arches upward is correspondingly formed on the snap-fit layer and is arched upward portion, described first arches upward portion and institute
State second arch upward portion toughness it is different.
It arches upward described in the utility model embodiment side wall internal diameter cyclically-varying in the circumferential direction in the portion of arching upward in portion.
Encapsulated layer described in the utility model embodiment includes several encapsulation function layers, at least two encapsulation function layers
The upper setting snap-fit layer.
The flexible display screen of the utility model embodiment, including flexible base board further include encapsulating structure described above,
The flexible base board lower surface is provided with magnetic material layer.
Magnetic material layer described in the utility model embodiment is symmetrical along the end edges of the flexible base board overbending direction
Setting.
The encapsulating structure of the utility model embodiment increases the portion that arches upward corresponding with overflexing region, utilizes the portion of arching upward
Elastic deformation stress overcome destruction of the overflexing folding s tress to encapsulation function layer.Arch upward portion elastic stress variation and envelope
The bending angle positive correlation for filling functional layer can offset the stress born when encapsulation function layer bending, be adapted to encapsulate in due course
The wider bending angle of functional layer and bending deviation, ensure that the service life of encapsulating structure.
Description of the drawings
Fig. 1 is the main structure diagram of the encapsulating structure of one embodiment of the utility model.
Fig. 2 is the side structure schematic view of the encapsulating structure of one embodiment of the utility model.
Fig. 3 is the main structure diagram of the encapsulating structure of another embodiment of the utility model.
Fig. 4 is the main structure diagram of the encapsulating structure of another embodiment of the utility model.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Fig. 1 is the main structure diagram of the encapsulating structure of one embodiment of the utility model.As shown in Figure 1, this practicality is new
The flexible display screen of one embodiment of type includes flexible base board 10, OLED device layer 20 and encapsulated layer 30, bending successively from bottom to top
Direction is to bend downward, and encapsulated layer 30 includes the first encapsulation function layer 31.Exist on encapsulated layer 30 and adapts to flexible display screen
The overflexing region (such as angle is less than 120 degree of region when bending) 11 of overflexing, overflexing region 11 is encapsulating
View field on layer 30 is a rectangular area, and as the extending direction in overflexing region, rectangular area extends along an opposite side
Connect with encapsulated layer profile (i.e. the extending direction in overflexing region 11 is front-rear direction in Fig. 1).
The first snap-fit layer 40, the first encapsulation of the first snap-fit layer 40 covering are fixed in the first encapsulation function layer 31
Functional layer 31.Inevitable, there is also overflexing regions on the first snap-fit layer 40, that is, it is right to there is overflexing region 11
The projected position answered, in overflexing region, the first snap-fit layer 40 of setting arches upward to be formed backwards to the first encapsulation function layer 31
The smooth portion 42 that arches upward (being column in the present embodiment), orthographic projection of the portion 42 in encapsulation function layer of arching upward at least covers excessively curved
Orthographic projection of the folding area domain in encapsulation function layer.
The utility model embodiment obtains higher toughness of material using the portion 42 that arches upward of the first snap-fit layer 40, alleviates
The overstress that first encapsulation function layer 31 is born in overflexing region 11, by the portion of arching upward 42 with the first encapsulation function layer 31
Formed when bending compared with large deformation when toughness the elastic stress opposite with 31 Impact direction of the first encapsulation function layer, counteracting are provided
Most of deformational stress that first encapsulation function layer 31 is born.Arch upward 42 deformation of portion when malleable band come elastic stress variation
With the bending angle positive correlation of the first encapsulation function layer 31, the mistake born when the bending of the first encapsulation function layer 31 can be offset in due course
Big stress is adapted to the wider bending angle variation of the first encapsulation function layer 31.
Arch upward in one embodiment of the utility model portion 42 extending direction and overflexing region 11 extending direction
(extending direction of the view field i.e. on encapsulated layer 30) unanimously, arch upward portion 42 cross sectional shape vertical with extending direction is similar
Cylinder, including a minor arc edge.
The utility model embodiment keep arch upward portion 42 extending direction it is consistent with the extending direction in overflexing region 11,
The deformational stress that the first encapsulation function layer 31 can be overcome to be born on predetermined overbending direction to greatest extent so that overflexing area
The setting in domain 11 can flexibly change according to product purpose demand.
As shown in Figure 1, in one embodiment of the utility model, the toughness of encapsulation function layer along overbending direction subsection setup,
Wherein in the toughness in the portion of arching upward maximum.A kind of corresponding feature structure performance is width (42 bottom of portion of arching upward in portion 42 of arching upward
Width) 46 width (the i.e. bending angle maximum areas in the first encapsulation function layer 31 for being more than 11 view field of overflexing region
The projection in domain).The first encapsulation function layer 31 is completely covered with uniform thickness 41 in first snap-fit layer 40, the top in the portion 42 that arches upward
The thickness of 43 to the first encapsulation function layers 31 is less than 2 times of uniform thickness 41.
The uniform fold of first 40 pair of first encapsulation function layer 31 of snap-fit layer of the utility model embodiment, to first
Encapsulation function layer 31 forms the comprehensive protection for overcoming bending stress, and can improve display screen accidental change on overbending direction causes
Outside overflexing region when drop-in overflexing the first encapsulation function layer 31 stress tolerances.Due to the portion of arching upward 42 compared with
Big width makes the larger thickness that can effectively reduce the portion of arching upward 42 of the deformation remaining in the portion of arching upward 42, ensures overall package layer 30
Structural thickness.
Another corresponding feature structure performance is thrown for the width 46 in the portion 42 that arches upward equal to or less than overflexing region 11
The width of the rectangular area of shadow, the thickness of 43 to the first encapsulation function layer 31 of top in the portion 42 that arches upward are more than the 2 of uniform thickness 41
Times.
Although the smaller width in the portion 42 that arches upward of the utility model embodiment has an impact whole structural thickness, objective
The arrangement space for increasing follow-up flexible circuit device or functional film layer is conducive to the improvement of flexible circuit or functional film layer and excellent
Change.
In one embodiment of the utility model, by 40 edge direction of the first snap-fit layer of the 42 liang of lateral homonymies in the portion of arching upward
Toughness is successively decreased paragraph by paragraph.A kind of corresponding feature structure performance is the uniform thickness 41 of the first snap-fit layer 40 by the portion of arching upward 42
40 edge direction of the first snap-fit layer of two lateral homonymies is successively decreased.
The uniform thickness 41 for the first snap-fit layer 40 that the utility model embodiment is successively decreased can be used as to the portion of arching upward 42
Shape optimum so that entire first snap-fit layer 40 is as the portion 42 that completely arches upward so as to unexpected overflexing direction
There is well adapting to property with position.
In one embodiment of the utility model, the first snap-fit layer 40 uses elastopolymer material, bullet
Property modulus is suitable with 31 deformational stress feature of the first encapsulation function layer.
The macromolecule polymer material of the utility model embodiment is conducive to form compact film, while being suitble to and the first encapsulation
Functional layer 31 is combined closely.
Fig. 2 is the side structure schematic view of the encapsulating structure of one embodiment of the utility model.As shown in Fig. 2 combinations Fig. 1,
On the basis of above-described embodiment, the side wall internal diameter (radial distance of the axis in the portion that arches upward to side wall, for cylinder in the portion 42 that arches upward
For i.e. radius) cyclically-varying in the direction of extension so that it is flat that the surface in the portion 42 that arches upward forms the waveform along extending direction
Sliding to rise and fall, the portion 42 that arches upward is alternatively formed high top 43 and low top 44 in the direction of extension.
The smooth fluctuating of waveform of the formation of portion 42 of arching upward of the utility model embodiment allows the portion of arching upward 42 to deconstruct
It is formed by multiple portion's series combinations that arch upward, the smaller portion of arching upward of elastic deformation stress has low top 44, elastic deformation stress
The larger portion of arching upward has high top 43.It is all when overflexing appears within determining overflexing region 11
The portion of arching upward can provide the elastic deformation stress of 31 corresponding position of the first encapsulation function layer needs, when excessive bending part deviates
When determining overflexing region 11, the portion of arching upward with high top 43, which can provide more elastic deformation stress, to be made excessively
Bending maintains in overflexing region 11.
Fig. 3 is the main structure diagram of the encapsulating structure of another embodiment of the utility model.As shown in figure 3, display screen
It is upper to there is determining the first overflexing region 13 and the second overflexing region 14, it is correspondingly formed on the snap-fit layer
First portion and second that arches upward arches upward portion, described first arch upward portion with described second arch upward portion toughness it is different.A kind of corresponding spy
Sign structure show as in the first encapsulation function layer 31 distinguish it is (i.e. independent) correspondence fix the first snap-fit layer 50 and second
The uniform thickness 61 of snap-fit layer 60, the uniform thickness 51 of the first snap-fit layer 50 and the second snap-fit layer 60 can be with
It differs, the first of the first snap-fit layer 50 arches upward the width 56 in portion 52 and the second of the second snap-fit layer 60 is arched upward portion 62
Width 66 can differ, the first of the first snap-fit layer 50 top 53 to the first encapsulation function layer 31 for arching upward portion 52
The thickness of 63 to the first encapsulation function layer 31 of top that thickness arches upward portion 62 with the second of the second snap-fit layer 60 can not phase
Together.
Two (even more than) snap-fit layers of the utility model embodiment can be separately provided according to actual needs, complete
Multiple overflexing regional demands of display screen can be met entirely.
Fig. 4 is the main structure diagram of the encapsulating structure of another embodiment of the utility model.As shown in figure 4, above-mentioned
It is corresponding with determining overflexing region on the basis of embodiment, fix the first snap-fit in the first encapsulation function layer 31
Layer 70 forms the portion 72 that arches upward, the side wall internal diameter (axis in the portion that arches upward to side wall in the portion 72 that arches upward on first snap-fit layer 70
Radial distance, for cylinder be radius) cyclically-varying in the circumferential direction of 73 both sides of top in the portion of arching upward 72,
So that the side wall in the portion 72 that arches upward prolongs the smooth fluctuating of circumferential direction, (can be symmetrical) wavy surface is formed.
The wavy surface of the formation of portion 72 of arching upward of the utility model embodiment has extended effective to arch upward the elastic shape in portion 42
Varying stress range can optimize the setting width and thickness for reducing the portion 72 that arches upward.
In one embodiment of the invention, the first encapsulation function layer 31 can be organic layer in encapsulated layer 30, graphene layer or
Inorganic layer.
In one embodiment of the invention, encapsulated layer 30 includes several encapsulation function layers, be can include but is not limited to organic
Layer, inorganic layer, graphene layer, encapsulation cover plate layer, wherein organic layer and inorganic layer can be stacked.In at least one encapsulation work(
On ergosphere, corresponding snap-fit layer is set, and each snap-fit layer is in encapsulated layer at most each encapsulation function layer
The corresponding portion that arches upward is formed in 30 overflexing region.The thickness in the portion that arches upward of each snap-fit layer and corresponding encapsulation function
Ply stress feature is corresponding.
It is excessively curved that the encapsulating structure of the utility model embodiment uses the snap-fit layer of sandwich-type that can maximize adaptation
Stress variation in the domain of folding area lowers the thickness in each portion that arches upward simultaneously, meets necessary encapsulating structure thickness.
As shown in Figure 1, the material that is magnetic is arranged in 10 bottom of flexible base board in the flexible display screen of one embodiment of the utility model
The bed of material.Bending state is kept to stablize when can ensure flexible display screen bending in place using the actuation characteristic of magnetic material, it can be with
It avoids to keep bending to continue to apply potential injury of the external force to flexible display screen to flexible display screen.
In one embodiment of the utility model, magnetic material layer along flexible base board overbending direction end edges (i.e. with mistake
On the parallel end edges of degree bending 11 extending direction of region) it is symmetrical arranged, magnetic material layer is using magnetic opposite permanent magnetism
Thin-film material 12.
The permanent magnetism thin-film material of the utility model embodiment can effectively guide overflexing to be maintained at overflexing area
In domain 11, overflexing is avoided to deviate from overflexing region 11.
In one embodiment of the utility model, magnetic material layer along flexible base board overbending direction end edges (i.e. with mistake
On the parallel end edges of degree bending 11 extending direction of region) be symmetrical arranged, magnetic material layer using permanent magnetism thin-film material and
Soft magnetic ribbon membrane material.
Soft magnetic ribbon membrane material of the utility model embodiment itself does not have magnetism, can effectively expand material selection model
It encloses, reduces influence of the magnetic polarity to other function elements.
In one embodiment of the utility model, permanent magnet film material and soft magnetic material film (or magnetic opposite permanent magnetism is thin
Membrane material) it is in a strip shape, it is symmetrical arranged along the end edges, such as shown in Figure 1 along 10 bottom left and right edges pair of flexible base board
Claim setting.Or permanent magnet film material and the soft magnetic material film (or magnetic opposite permanent magnet film material) be in dotted,
The end symmetric of end edges is arranged, such as symmetrical in the front end of 10 bottom left and right edges of flexible base board or rear end as shown in Figure 1
Setting.
The magnetic material of the utility model embodiment is arranged in vertex, when display screen is bent, symmetrical magnetic material
Can be attracting with Rapid matching, unexpected be attracted of generation causes screen body distortion between avoiding magnetic material.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, made by any modification, equivalent replacement etc., should be included in the protection of the utility model
Within the scope of.
Claims (10)
1. a kind of encapsulating structure, including encapsulation function layer, which is characterized in that snap-fit layer is set in the encapsulation function layer,
The snap-fit layer is arranged in overflexing region, and the snap-fit layer arches upward to be formed backwards to the encapsulation function layer to arch upward
Portion, the orthographic projection of the portion in the encapsulation function layer of arching upward at least cover the overflexing region in the encapsulation function
Orthographic projection on layer.
2. encapsulating structure as described in claim 1, which is characterized in that the extending direction in the portion that arches upward and the overflexing
The extending direction in region is consistent.
3. encapsulating structure as described in claim 1, which is characterized in that the toughness of the snap-fit layer is segmented along overbending direction
The toughness of setting, the portion that arches upward is maximum.
4. encapsulating structure as described in claim 1, which is characterized in that the toughness of the snap-fit layer is by the portion two that arches upward
The edge direction of the snap-fit layer of lateral homonymy is successively decreased.
5. encapsulating structure as described in claim 1, which is characterized in that the snap-fit layer uses elastopolymer
The elasticity modulus of material, the snap-fit layer is suitable with the deformational stress of the encapsulation function layer.
6. encapsulating structure as described in claim 1, which is characterized in that it is excessively curved to include at least first on the snap-fit layer
Folding area domain and the second overflexing region are correspondingly formed first portion and second that arches upward on the snap-fit layer and arch upward portion, institute
State first arch upward portion with described second arch upward portion toughness it is different.
7. encapsulating structure as described in claim 1, which is characterized in that circumferential direction of the side wall internal diameter in the portion that arches upward in the portion of arching upward
Cyclically-varying on direction.
8. encapsulating structure as described in claim 1, which is characterized in that the encapsulation function layer includes the organic layer being stacked
And inorganic layer.
9. a kind of flexible display screen, including encapsulating structure as described in any of the claims 1 to 8, which is characterized in that further include soft
Property substrate, magnetic material layer is provided in the flexible base board lower surface.
10. flexible display screen as claimed in claim 9, which is characterized in that the magnetic material layer is curved along the flexible base board
The end edges for rolling over direction are symmetrical arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721920322.3U CN207664046U (en) | 2017-12-29 | 2017-12-29 | A kind of encapsulating structure and flexible display screen |
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| CN201721920322.3U CN207664046U (en) | 2017-12-29 | 2017-12-29 | A kind of encapsulating structure and flexible display screen |
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| CN207664046U true CN207664046U (en) | 2018-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197845A (en) * | 2019-06-20 | 2019-09-03 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
-
2017
- 2017-12-29 CN CN201721920322.3U patent/CN207664046U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197845A (en) * | 2019-06-20 | 2019-09-03 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN110197845B (en) * | 2019-06-20 | 2021-06-25 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| US11424310B2 (en) | 2019-06-20 | 2022-08-23 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel having adjusting layer and elastic layer and method of manufacturing the display panel |
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