CN106530973A - Curved surface display device - Google Patents
Curved surface display device Download PDFInfo
- Publication number
- CN106530973A CN106530973A CN201611192284.4A CN201611192284A CN106530973A CN 106530973 A CN106530973 A CN 106530973A CN 201611192284 A CN201611192284 A CN 201611192284A CN 106530973 A CN106530973 A CN 106530973A
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- Prior art keywords
- curved
- display device
- adhesive layer
- surface display
- stress
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- 239000012790 adhesive layer Substances 0.000 claims abstract description 99
- 238000005452 bending Methods 0.000 claims abstract description 16
- 239000010408 film Substances 0.000 claims description 43
- 239000010410 layer Substances 0.000 claims description 37
- 230000007935 neutral effect Effects 0.000 claims description 20
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 8
- 238000004026 adhesive bonding Methods 0.000 claims description 7
- 238000005538 encapsulation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000007812 deficiency Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
Abstract
The embodiment of the invention discloses a curved surface display device, which comprises: a curved display panel and a plurality of external members stacked on the curved display panel; the external member and the curved display panel are bonded through adhesive layers; the elastic modulus of the adhesive layer under tensile stress is greater than the elastic modulus of the adhesive layer under compressive stress, and/or the adhesion of the adhesive layer under compressive stress is greater than the adhesion of the adhesive layer under tensile stress. The embodiment of the invention effectively avoids the stress damage of the curved surface display device during unidirectional bending, and can reduce the thickness of the curved surface display device.
Description
Technical field
The present invention relates to display technology field, and in particular to a kind of curved-surface display device.
Background technology
Curved-surface display device refer to prepare on the flexible parent metals such as plastics, foil or glass flake with flexible
The flat-panel display device of song.The laminated construction of curved-surface display device is usually that each functional film layer is bonded together by glue-line.
During unidirectional bending, each functional film layer of curved-surface display device is pointed to along curvature with stress neutral surface as boundary along stress neutral surface
The film layer in heart direction is subject to compressive stress, is subject to tensile stress along film layer of the stress neutral surface away from center of curvature direction.Due to curved surface
Easily there is separation problem in the bending of display device, the film layer in compressive stress state, and the film layer for being in tensile stress state is held
Easily there is breakage problem.
The content of the invention
In view of this, a kind of curved-surface display device is embodiments provided, to solve to ask present in prior art
Topic, it is to avoid stress damage of the curved-surface display device in unidirectional bending.
A kind of curved-surface display device is embodiments provided, including：
Curved face display panel and multiple external members of the stacking on the curved face display panel；
Glued by adhesive layer between said external component and external member and between external member and curved face display panel
Knot；
Elastic modelling quantity of the elastic modelling quantity of the adhesive layer in tensile stress more than the adhesive layer in compressive stress；And/or,
Adhesion of the adhesion of the adhesive layer in compressive stress more than the adhesive layer in tensile stress.
A kind of curved-surface display device is embodiments provided, in the curved-surface display device, in the gluing of tensile stress
Elastic modelling quantity of the elastic modelling quantity of layer more than the adhesive layer in compressive stress so that the adhesive layer in tensile stress has more preferable
Elasticity, effectively prevent the adhesive layer in tensile stress because elastic deficiency causes each film layer in tensile stress state that fracture occurs
Situation, and/or, in the curved-surface display device, the adhesion of the adhesive layer in compressive stress is more than the glue in tensile stress
The adhesion of glutinous layer so that the adhesive layer in compressive stress has more preferable viscosity, effectively prevent the gluing in compressive stress
Layer causes each film layer in compressive stress state that detached situation occurs because of viscosity deficiency.
Description of the drawings
It is by reading the detailed description made to non-limiting example made with reference to the following drawings explanation, of the invention
Other features, objects and advantages will become apparent from.
Fig. 1 is a kind of structural representation of curved-surface display device provided in an embodiment of the present invention；
There is the schematic diagram of fracture for the film layer in curved-surface display device in tensile stress state in Fig. 2；
There is detached schematic diagram for the film layer in curved-surface display device in compressive stress state in Fig. 3；
Fig. 4 is the structural representation of another curved-surface display device provided in an embodiment of the present invention；
Fig. 5 is a kind of structural representation of curved-surface display device not bent provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation of the curved-surface display device of bending provided in an embodiment of the present invention；
Fig. 7 is the curved-surface display device schematic diagram of folding provided in an embodiment of the present invention；
Fig. 8 is the curved-surface display device schematic diagram of curling provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention is illustrate only in description, accompanying drawing and not all.
Fig. 1 is a kind of structural representation of curved-surface display device provided in an embodiment of the present invention.As shown in figure 1, this enforcement
The curved-surface display device that example is provided includes：Curved face display panel 110 and the stacking on curved face display panel 110 it is multiple
External member 120.Illustrated as a example by being laminated two external members in the present embodiment, curved-surface display device is to external member side
Bending, i.e. side of the externally-located component of the corresponding center of curvature of curved-surface display device away from curved face display panel.
Pass through between external member 120 and external member 120 and between external member 120 and curved face display panel 110
Adhesive layer 130 bonds.
Curved-surface display device can form a stress neutral surface in bending, and stress neutral surface is substantially zeroed by adaptability to changes
Point definition imaginary plane, the dotted line in Fig. 1 represents stress neutral surface.Stress neutral surface along curved-surface display device is away from song
The direction at rate center, curved face display panel 110 and adhesive layer 131 are in tensile stress state；Along the stress of curved-surface display device
Property face point to the direction of the center of curvature, adhesive layer 132 and external member 120 are in compressive stress state.
Fig. 2 be curved-surface display device in tensile stress state film layer occur fracture schematic diagram, specially in
The enlarged schematic partial view of the film layer of stress.Vertical strip in Fig. 2 represents that film layer is subject to the striped that tension force stretching is produced, and works as film
When the pulling force that layer is subject to exceedes the holding capacity of film layer, there is fracture in film layer.In Fig. 2, circle show the overtension that film layer is subject to
And there is the situation of fracture.In curved-surface display device provided in an embodiment of the present invention, setting is in the adhesive layer 131 of tensile stress
Elastic modelling quantity of the elastic modelling quantity more than the adhesive layer 132 in compressive stress so that the adhesive layer 131 in tensile stress has more preferable
Elasticity, effectively prevent the adhesive layer 131 in tensile stress because elastic deficiency causes the curved-surface display in tensile stress state
There is the situation of fracture in panel 110.
There is detached schematic diagram for the film layer in curved-surface display device in compressive stress state in Fig. 3, as shown in figure 3, place
There is fold in the film layer of compressive stress and separate.In curved-surface display device provided in an embodiment of the present invention, arrange in compressive stress
Adhesive layer 132 adhesion more than in tensile stress adhesive layer 131 adhesion so that in the adhesive layer of compressive stress
132 have more preferable viscosity, effectively prevent the adhesive layer 132 in compressive stress because viscosity deficiency causes in compressive stress state
External member 120 there is detached situation with adhesive layer 132.
The material of adhesive layer can be pressure sensitive adhesive, then the adhesive layer 131 and the adhesive layer in compressive stress in tensile stress
132 is the different pressure sensitive adhesive of adhesion, and the adhesion of the adhesive layer 132 in compressive stress is more than the gluing in tensile stress
The adhesion of layer 131 so that the adhesive layer 132 in compressive stress has more preferable viscosity, or in the adhesive layer of tensile stress
131 is the different pressure sensitive adhesive of elastic modelling quantity with the adhesive layer 132 in compressive stress, and the adhesive layer 131 in tensile stress
Elastic modelling quantity of the elastic modelling quantity more than the adhesive layer 132 in compressive stress.Wherein, the adhesion and elastic modelling quantity of pressure sensitive adhesive is big
It is little relevant with the main constituents of pressure sensitive adhesive, such as pressure sensitive adhesive with rubber as main material, then the elastic modelling quantity of the pressure sensitive adhesive
It is larger；If pressure sensitive adhesive is with acrylate as main material, the adhesion of the pressure sensitive adhesive is larger.The material of adhesive layer can be with
It is optical cement, it is identical for the situation of pressure sensitive adhesive with above-mentioned gluing layer material.
Exemplarily, thickness of the thickness of the adhesive layer 131 in tensile stress less than the adhesive layer 132 in compressive stress.
Because the adhesive layer 131 in tensile stress interface does not need extremely strong adhesion, its thickness can be suitably thinning, Jin Eryou
Effect reduces the thickness of curved-surface display device.
Fig. 4 is the structural representation of another curved-surface display device provided in an embodiment of the present invention.As shown in figure 4, with it is upper
State unlike embodiment, the curved-surface display device that Fig. 4 is provided is rolled over to curved face display panel lateral bending, i.e. curved-surface display device correspondence
The center of curvature be located at curved face display panel away from external member side.
Stress neutral surface along curved-surface display device points to the direction of the center of curvature, curved face display panel 110 and adhesive layer
131 are in compressive stress state；Along curved-surface display device stress neutral surface away from the center of curvature direction, adhesive layer 132 and outer
Portion's component 120 is in tensile stress state.The elastic modelling quantity of the adhesive layer 132 in tensile stress is more than the adhesive layer in compressive stress
131 elastic modelling quantity so that the adhesive layer 132 in tensile stress has preferably elasticity, effectively prevent in tensile stress
Adhesive layer 132 causes the external member 120 in tensile stress state that the situation of fracture occurs because of elastic deficiency；And/or,
Adhesion of the adhesion of the adhesive layer 131 in compressive stress more than the adhesive layer 132 in tensile stress so that place
There is more preferable viscosity in the adhesive layer 131 of compressive stress, the adhesive layer 131 in compressive stress be effectively prevent because viscosity deficiency is led
Cause the curved face display panel 110 in compressive stress state that detached situation occurs with adhesive layer 131.
It should be noted that in the various embodiments described above, curved face display panel 110 can be display panels, it is also possible to
It is organic electroluminescence display panel, the embodiment of the present invention is not especially limited to this.
Fig. 5 is a kind of structural representation of curved-surface display device not bent provided in an embodiment of the present invention.Such as Fig. 5 institutes
Show, the present embodiment provide curved-surface display device in, curved face display panel 110 include organic light-emitting device array substrate 111 with
And cover the thin-film encapsulation layer 112 of organic light-emitting device array substrate 111；
Organic illuminating element array base palte 111 is used for luminescence display, can include thin film transistor (TFT), Organic Light Emitting Diode
With organic insulation etc..Thin-film encapsulation layer 112 is used for preventing the moisture and oxygen in the external world from entering organic illuminating element array base
Plate 111, causes the oxidation of organic illuminating element array base palte 111.
External member 120 includes barrier film 121, polarizing coating 122, touch module 123 and protecting film 124；Barrier film 121 is used
In further isolation moisture and oxygen；Polarizing coating 122 is circular polarization film, for eliminating ambient light in curved face display panel 110
The reflected light of formation；Touch module 123 is to realize the medium of man-machine interaction；Protecting film 124 is used for protecting above-mentioned each film layer structure,
It is the ES of curved-surface display device.
External member 120 can be one or more in above-mentioned film layer, and the present embodiment includes the above with external member 120
Illustrate as a example by four film layers.
Thin-film encapsulation layer 112 is bondd by the first adhesive layer 131 with barrier film 121；
Barrier film 121 is bondd by the second adhesive layer 132 with polarizing coating 122；
Polarizing coating 122 is bondd by the 3rd adhesive layer 133 with touch module 123；
Touch module 123 is bondd by the 4th adhesive layer 134 with protecting film 124.
Fig. 6 is a kind of structural representation of the curved-surface display device of bending provided in an embodiment of the present invention, i.e., shown in Fig. 5
Structural representation of the curved-surface display device in bending state.As shown in fig. 6, the corresponding center of curvature of curved-surface display device is located at
Side of the external member away from curved face display panel.
In the curved-surface display device that the present embodiment is provided, the position that dotted line is located is stress neutral surface, is filled along curved-surface display
Direction of the stress neutral surface put away from the center of curvature, organic illuminating element array base palte 111, thin-film encapsulation layer 112, barrier film
121st, the first adhesive layer 131 and the second adhesive layer 132 are in tensile stress state；Stress neutral surface along curved-surface display device is pointed to
The direction of the center of curvature, touch module 123, protecting film 124, the 3rd adhesive layer 133 and the 4th adhesive layer 134 are in compressive stress shape
State.
The elastic modelling quantity of the first adhesive layer 131 and the second adhesive layer 132 in tensile stress is more than the in compressive stress
The elastic modelling quantity of three adhesive layers 133 and the 4th adhesive layer 134 so that the first adhesive layer 131 and the second gluing in tensile stress
Layer 132 has preferably elasticity, effectively prevent organic illuminating element array base palte 111, the thin film envelope in tensile stress state
There is the situation of fracture in dress layer 112 and barrier film 121.
The adhesion of the 3rd adhesive layer 133 and the 4th adhesive layer 134 in compressive stress is more than first in tensile stress
The adhesion of adhesive layer 131 and the second adhesive layer 132 so that in the 3rd adhesive layer 133 and the 4th adhesive layer 134 of compressive stress
With more preferable viscosity, effectively prevent the touch module 123 in compressive stress state and protecting film 124 occurs detached feelings
Condition.
Exemplarily, the elastic modelling quantity of the first adhesive layer 131 can be bigger than the elastic modelling quantity of the second adhesive layer 132, i.e.,
Along the curved-surface display device stress neutral surface away from the center of curvature direction, in 132 He of the second adhesive layer of tensile stress
The elastic modelling quantity of the first adhesive layer 131 is gradually incremented by, and further can avoid by the bigger organic illuminating element array of tensile stress
There is fracture in substrate 111.
Exemplarily, the thickness of the first adhesive layer 131 can be thinner than the thickness of the second adhesive layer 132, i.e., aobvious along curved surface
Direction of the stress neutral surface of showing device away from the center of curvature, the thickness of each adhesive layer in tensile stress are gradually successively decreased, can
Further to reduce the thickness of curved-surface display device.
Exemplarily, the adhesion of the 4th adhesive layer 134 can be bigger than the adhesion of the 3rd adhesive layer 133, i.e., along institute
The stress neutral surface for stating curved-surface display device points to the direction of the center of curvature, in the 3rd adhesive layer 133 and the 4th of tensile stress
The adhesion of adhesive layer 134 is gradually incremented by, and the protecting film 124 that can further avoid compression chord bigger occurs to separate.
Exemplarily, the thickness of the 4th adhesive layer 134 can be thicker than the thickness of the 3rd adhesive layer 133, i.e., aobvious along curved surface
The stress neutral surface of showing device points to the direction of the center of curvature, and the thickness of each adhesive layer in compressive stress is gradually incremented by, can
Further to increase the adhesion of the 4th bigger adhesive layer 134 of compression chord, it is to avoid protecting film 124 occurs to separate.
The bending type of the curved-surface display device that above-described embodiment is provided is bending, and further, the embodiment of the present invention is carried
For curved-surface display device bending type also include fold and crimp.Fig. 7 is the curved surface of folding provided in an embodiment of the present invention
Display device schematic diagram, as shown in fig. 7, curved-surface display device is in folded state.Fig. 8 is curling provided in an embodiment of the present invention
Curved-surface display device schematic diagram, as shown in figure 8, curved-surface display device is in rolled state.Based on same design, the embodiment of the present invention
The curved-surface display device of the folding and curling of offer has the curved-surface display device identical beneficial effect of above-mentioned bending.
Curved-surface display device provided in an embodiment of the present invention can be that mobile phone, panel computer, Electronic Paper, intelligence wearable set
It is standby to wait the equipment arbitrarily with display function.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of curved-surface display device, it is characterised in that include：
Curved face display panel and multiple external members of the stacking on the curved face display panel；
Pass through between the external member and the external member and between the external member and the curved face display panel
Adhesive layer bonds；
Elastic modelling quantity of the elastic modelling quantity of the adhesive layer in tensile stress more than the adhesive layer in compressive stress；With/
Or,
Adhesion of the adhesion of the adhesive layer in compressive stress more than the adhesive layer in tensile stress.
2. curved-surface display device according to claim 1, it is characterised in that multiple external members of the stacking include：
At least one in barrier film, polarizing coating, touch module and protecting film.
3. curved-surface display device according to claim 1, it is characterised in that the stress along the curved-surface display device is neutral
Direction of the face away from the center of curvature, the elastic modelling quantity of each adhesive layer in tensile stress are gradually incremented by；And/or,
Stress neutral surface along the curved-surface display device points to the direction of the center of curvature, in each described gluing of compressive stress
The adhesion of layer is gradually incremented by.
4. curved-surface display device according to claim 1, it is characterised in that the curved face display panel includes organic light emission
The thin-film encapsulation layer of component array baseplate and the covering organic illuminating element array base palte；
The external member includes barrier film, polarizing coating, touch module and protecting film；
The thin-film encapsulation layer is bondd by the first adhesive layer with the barrier film；
The barrier film is bondd by the second adhesive layer with the polarizing coating；
The polarizing coating is bondd by the 3rd adhesive layer with the touch module；
The touch module is bondd by the 4th adhesive layer with the protecting film.
5. curved-surface display device according to claim 1, it is characterised in that in the corresponding curvature of the curved-surface display device
The heart is located at side of the external member away from the curved face display panel.
6. curved-surface display device according to claim 1, it is characterised in that in the corresponding curvature of the curved-surface display device
The heart is located at side of the curved face display panel away from the external member.
7. curved-surface display device according to claim 1, it is characterised in that the thickness of the adhesive layer in tensile stress
Less than the thickness of the adhesive layer in compressive stress.
8. curved-surface display device according to claim 1, it is characterised in that the stress along the curved-surface display device is neutral
Direction of the face away from the center of curvature, the thickness of each adhesive layer in tensile stress are gradually successively decreased；And/or,
Stress neutral surface along the curved-surface display device points to the direction of the center of curvature, in each described gluing of compressive stress
The thickness of layer is gradually incremented by.
9. curved-surface display device according to claim 1, it is characterised in that the material of the adhesive layer include pressure sensitive adhesive or
Person's optical cement.
10. curved-surface display device according to claim 1, it is characterised in that the bending type of the curved-surface display device
Including bending, fold or curling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192284.4A CN106530973B (en) | 2016-12-21 | 2016-12-21 | Curved surface display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192284.4A CN106530973B (en) | 2016-12-21 | 2016-12-21 | Curved surface display device |
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|---|---|
| CN106530973A true CN106530973A (en) | 2017-03-22 |
| CN106530973B CN106530973B (en) | 2019-06-11 |
Family
ID=58340290
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| CN201611192284.4A Active CN106530973B (en) | 2016-12-21 | 2016-12-21 | Curved surface display device |
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Cited By (29)
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| CN106940966A (en) * | 2017-05-17 | 2017-07-11 | 京东方科技集团股份有限公司 | Display screen module and electronic equipment |
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| CN107230429A (en) * | 2017-06-08 | 2017-10-03 | 武汉天马微电子有限公司 | Flexible module and flexible display panel |
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| CN109473046A (en) * | 2018-12-18 | 2019-03-15 | 武汉华星光电半导体显示技术有限公司 | Optical cement and display panel |
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