CN108847134A - A kind of stretchable display device and its manufacturing method - Google Patents
A kind of stretchable display device and its manufacturing method Download PDFInfo
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- CN108847134A CN108847134A CN201810609371.8A CN201810609371A CN108847134A CN 108847134 A CN108847134 A CN 108847134A CN 201810609371 A CN201810609371 A CN 201810609371A CN 108847134 A CN108847134 A CN 108847134A
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- 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
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Abstract
The present invention provides a kind of stretchable display devices, including：Multiple light emitting regions, multiple functional film layers including superposition, multiple functional film layers are configured to play the role of display；And at least one stress release mould group, the non-luminous region being separately positioned between two light emitting regions, wherein, stress release mould group region is filled with stress release material, the stress that display screen generates during stretching is absorbed and released using the performance of stress release material, to realize the stretching of display screen.
Description
Technical field
The present invention relates to field of display screens, and in particular to a kind of device and its manufacturing method of stretchable display screen.
Background technique
Flexible display can be divided into curved display, folding collapsible display with curved shape, and
Flexible or stretchable stretchable displayer, wherein curved display and collapsible display are commercially available, recently, attempt
Realize have stretchable structure organic light emitting display, desirably form organic light emitting display with when it is pulled extend/
Extend or shrink and bending, in order to obtain stretchable characteristic, using stretchable substrate, however, substrate be can stretch, but
Be metal electrode, electronic device etc. be it is not tensile, when as substrate tension it is generated extend, shrink, bending produced by
Pressure will lead to the crack of metal electrode, electronic device and therefore how to realize that the stretchable displayer of high reliablity becomes
One technical problem.
Summary of the invention
In view of this, the embodiment of the present invention is dedicated to providing a kind of stretchable display device, solves flexible display
The stress generated during stretching leads to the problem of metal electrode, electronic device crack.
According to an aspect of the present invention, a kind of stretchable display device is provided, including：
Multiple light emitting regions, multiple functional film layers including superposition, the multiple functional film layer are configured to play display work
With；And at least one stress release mould group, the non-luminous region between two light emitting regions is separately set,
Wherein, the stress release mould group region is filled with stress release material.
In one embodiment, the light emitting region is arranged in array, at least one described stress release mould group includes multiple
Stress release mould group, the multiple stress release mould group are set to adjacent two along the line direction and/or column direction of the array
Between a light emitting region.
In one embodiment, the stress release material is along the direction bending vertical with the functional film layer in default shape
Shape.
Further, the preset shape includes the combination of one or more of：Convex, concave arc shape, trapezoidal, both ends
Wide intermediate narrow shape.
In one embodiment, the stress release material includes shape memory polymer material.
Further, the shape-memory polymer includes one of following material or a variety of combinations：Epoxy is birdsed of the same feather flock together
Close object and styrene.
In one embodiment, the stress release mould group on the direction vertical with the functional film layer completely through or
The multiple functional film layer is run through in part.
In one embodiment, the multiple functional film layer includes the substrate being sequentially overlapped, inorganic layer, film transistor device
Layer, luminescent layer and encapsulated layer.
In one embodiment, the substrate includes that flexible organic layer and flexible base layer, the flexible base layer are set to
The surface of side of the flexibility organic layer close to the inorganic layer.
According to another aspect of the present invention, a kind of stretchable display device manufacturing method is also provided, including：
Preparation provides rigid substrates, and the rigid substrates surface includes multiple preset display areas and at least one is answered
Power release areas, wherein at least one described stress release region be separately positioned on it is non-luminescent between two display areas
Region；In the display area, multiple functional film layers of preparation superposition are to constitute the light emitting region for playing the role of display；Described
Stress release region is coated with stress release material；And the rigid substrates are removed.
In one embodiment, before the stress release region is coated with stress release material, the method is further wrapped
It includes：
There is the mould that curved shape is preset along the direction vertical with the functional film layer in stress release region setting
Tool；Wherein, include in stress release region coating stress release material：The stress is coated on the surface of the mold to release
Putting material.
Stretchable display device provided in an embodiment of the present invention utilizes setting stress release mould between two light emitting regions
Group has absorbed and released what display screen generated during stretching using the stress release material that stress release mould group region is coated with
Stress, realizes the tensility energy of display screen, and further provides the manufacturing method of stretchable display device.
Detailed description of the invention
Fig. 1 show the schematic diagram of the section structure of stretchable display screen provided by one embodiment of the invention.
Fig. 2 show the schematic diagram of the section structure of stretchable display screen provided by further embodiment of this invention.
Fig. 3 show the schematic diagram of the section structure of stretchable display screen provided by further embodiment of this invention.
Fig. 4 show the schematic diagram of the section structure of stretchable display screen provided by further embodiment of this invention.
Fig. 5 show the manufacturing method flow chart of stretchable display screen provided by one embodiment of the invention.
Fig. 6 show the manufacturing method flow chart of stretchable display screen provided by further embodiment of this invention.
Fig. 7 show planar structure schematic diagram provided by one embodiment of the invention.
Fig. 8 show planar structure schematic diagram provided by further embodiment of this invention.
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 schematic diagram of the section structure of stretchable display device provided by one embodiment of the invention.Such as Fig. 1
It is shown, the stretchable display device, including multiple light emitting regions 2, light emitting region 2 include multiple functional film layers of superposition, it should
Multiple functional film layers are configured to play the role of each functional module layer of display；And at least one stress release mould group 1, respectively
It is arranged in the gap of two light emitting regions 2, wherein 1 region of stress release mould group is filled with stress release material.Stress
Releasable material refers to material that is flexible and dischargeing tensile stress during stretching.
Based on the structure of stretchable display device shown in FIG. 1, when the display device is when realizing stretched operation, answer
Power release mould group 1 can be absorbed and discharge the shear stress of surrounding light emitting region 2, to protect light emitting region 2 not by stress
And it damages or ruptures.It can be seen that the embodiment of the present invention is utilized by the way that stress release mould group is arranged between two light emitting regions
Stress release material in stress release mould group region has absorbed and released the stress that display screen generates during stretching, realizes
The tensility energy of display screen, solving the stress that display screen generates during stretching may cause the damage of display component
Bad problem.
In an embodiment of the present invention, stress release material includes shape memory polymer material, to realize that display screen is drawn
Original position can be automatically replied when external force removes after stretching.In a further embodiment, shape-memory polymer includes following material
One of material or a variety of combinations：Epoxide polymer and styrene.
It should be appreciated, however, that the material of stress release material can also be selected according to actual scene demand, and and it is unlimited
In above-mentioned shape memory polymer material, as long as the stress release material has the flexible stress that can be discharged in drawing process
, the present invention to the specific material of the stress release material without limitation.
In one embodiment, the stress release mould group on the direction vertical with the functional film layer completely through or
Multiple functional film layers are run through in part.
It should be appreciated, however, that stress release mould group can also be selected according to actual scene demand its with the functional membrane
Thickness on the vertical direction of layer, as long as the stress release mould group discharges the stress in drawing process, the present invention couple enough
The thickness of the stress release mould group on the direction vertical with the functional film layer is without limitation.
In an embodiment of the present invention, multiple functional film layers for constituting light emitting region 2 may include the base being sequentially overlapped
Bottom, inorganic layer 23, film transistor device layer 24, luminescent layer 25 and encapsulated layer 26, stress release mould group 1 in the present embodiment
It is corresponding with multiple functional film layer structures of light emitting region 2.
It should be appreciated that constituting multiple functional film layers of light emitting region 2 can select according to practical application request, and it is not
It is limited to the overlay order of above-mentioned each film layer and each film layer, as long as light emitting region can be realized the display function of display screen i.e.
It can.
In an embodiment of the present invention, substrate includes flexible base layer 22, to increase the flexibility of substrate.
In an embodiment of the present invention, substrate includes that flexible organic layer 21 and flexible base layer 22, flexible base layer 22 are set
It is placed in the surface of side of the flexible organic layer 21 close to inorganic layer 23.
It should be appreciated that the setting of flexible organic layer 21 and flexible base layer 22 is the flexibility in order to increase substrate, flexibility has
Machine layer 21 is set to the surface of the side of the close inorganic layer 23 of flexible base layer 22 or the equal energy of the side far from inorganic layer 23
Realize the effect, therefore, for flexible organic layer 21 and flexible base layer 22 relative position without limitation.
In a further embodiment, flexible organic layer 21 includes polydimethyl siloxane material, and flexible base layer 22 is wrapped
Include polyimide material.
It should be appreciated that the material of flexible organic layer 21 and flexible base layer 22 can also be selected according to actual scene demand
Select, and be not limited to above-mentioned polydimethyl siloxane material and polyimide material, if two kinds of materials have flexibility can
The stress in the drawing process of part is discharged, the present invention does not do the specific material of flexible organic layer 21 and flexible base layer 22
It limits.
In an embodiment of the present invention, encapsulated layer 26 can be multi-layer compound structure, and 26 upper surface of encapsulated layer may also include
The tensility of light emitting region 2 can be improved by the setting of soft stretch organic layer 27 in soft stretch organic layer 27, into one
Step reduces display screen during stretching for the stress impact of the non-stretchable device in light emitting region 2.
It is respectively that the cross-section structure of stretchable display screen provided by three embodiments of the invention shows shown in Fig. 2, Fig. 3, Fig. 4
It is intended to.As shown in Figure 2, Figure 3, Figure 4, by the stress release material in embodiment illustrated in fig. 1 along the direction vertical with functional film layer
In default forming shape, preset shape may include the combination of one or more of for bending：Convex, concave arc shape, trapezoidal, both ends
The shapes such as wide intermediate narrow shape.By reducing the area of light-emitting window to enhance light-out effect.
It should be appreciated that preset shape can be selected according to actual scene demand, and it is not limited to above-mentioned convex, concave arc
Shape, shape trapezoidal, the wide centre in both ends is narrow, as long as preset shape can increase the transverse width of stress release mould group to increase it
Absorb and release the ability of stress, the present invention to preset shape without limitation.
Fig. 5 show a kind of stretchable display screen manufacturing method flow chart of one embodiment of the invention offer.It is stretchable aobvious
Display screen manufacturing method may include following steps：
Step 501：Preparation provides rigid substrates, answers in the multiple display areas of rigid substrates surface programming at least one
Power release areas, wherein at least one stress release region are separately positioned in the gap of two display areas.
Rigid substrates refer to that rigid is biggish and are placed in being used to support in display screen preparation process respectively for display screen bottom
The superposition or coating of a functional film layer, rigid substrates provide pressure resistance because its rigid is larger during preparing display screen
Substrate and deformation quantity is small can guarantee that whole deformation quantity is small in display screen preparation process, and preparation precision is high.In one embodiment
In, rigid substrates can be glass substrate, it is to be understood that being also possible to others can serve as in display screen preparation process
The rigid material of substrate.
Step 502：In display area, multiple functional film layers of preparation superposition are to constitute the light emitting region for playing the role of display.
In an embodiment of the invention, multiple functional film layers for constituting light emitting region may include the base being sequentially overlapped
Bottom, inorganic layer 23, film transistor device layer 24, luminescent layer 25 and encapsulated layer 26.The combination of the functional film layer should understand that
For a kind of combined method for realizing display function, as long as can be realized the composite structure of display function, the present invention is for each
The structure and combination of a functional film layer are without limitation.
Step 303：Stress release material is coated in stress release region.In an embodiment of the invention, stress release
Material includes but is not limited to shape memory polymer material, with realize display screen stretch after external force removal when can automatically reply
It is in situ.In a further embodiment, shape-memory polymer includes but is not limited to one of following material or a variety of groups
It closes：Epoxide polymer and styrene.
Step 304：Rigid substrates are removed to form stretchable display screen.Light emitting region and stress release in display screen
After the completion of the preparation of mould group, by rigid substrates, flexibility is stripped down from display screen, that is, completes the preparation of stretchable display screen
Journey.Flexibility removing refers to that flexible display screen is set on rigid substrates and prepares display device, after prepare again by display screen with it is rigid
Property substrate separation, the flexible removing of the present invention includes but is not limited to laser lift-off technique.
Fig. 6 show a kind of stretchable display screen manufacturing method flow chart of further embodiment of this invention offer.In Fig. 3 institute
The step of showing that increasing by one between the step 501 and step 502 of embodiment realizes stress release region curved shape, specific steps are such as
Shown in Fig. 4：
Step 601：Preparation provides rigid substrates, answers in the multiple display areas of rigid substrates surface programming at least one
Power release areas, wherein at least one stress release region are separately positioned in the gap of two display areas.
Step 602：In stress release region, bending grinding tool is set.
Step 603：In display area, multiple functional film layers of preparation superposition are to constitute the light emitting region for playing the role of display.
Step 604：Stress release material is coated in stress release region.
Step 605：Rigid substrates are removed to form stretchable display screen.
In order to realize the stretched operation of display screen, the present invention provides a kind of stretchable display devices, by display screen
Non-stretchable device etc. is set to display area, and the stress release mould group of stretchable operation is arranged around light emitting region, answers
Power release mould group absorbs the stress generated when display screen stretches, so as to avoid can not draw in light emitting region and light emitting region
It stretches device to be stretched the influence of stress and fail or be damaged, Fig. 7 and Fig. 8 are respectively the flat of the stretchable display screen of the present invention
The structural schematic diagram of two embodiments of face structure.
In an embodiment of the present invention, light emitting region 2 and stress release mould group 1 include multiple portions, and light emitting region is in
Array arrangement, and light emitting region 2 is staggered with stress release mould group 1, and light emitting region 2 can be with stress release mould group 1
It is staggered along a direction of array, such as the line direction or column direction of array, and the luminous zone on another direction
Domain 2 and stress release mould group 1 are continuous integral structures.
In an embodiment of the present invention, light emitting region 2 interlocks with stress release mould group 1 along orthogonal both direction
Arrangement, such as the line direction and column direction of array, the i.e. different piece of light emitting region 2 are separated by stress release mould group 1, are answered
The different piece of power release mould group 1 is also separated by light emitting region 2, absorbs and stretches which further increases light emitting region 2
The ability of stress, while also improving the protective capability to stress release mould group 1.
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 stretchable display device, which is characterized in that including：
Multiple light emitting regions, multiple functional film layers including superposition, the multiple functional film layer are configured to play the role of display；With
And
At least one stress release mould group, is separately arranged in the non-luminous region between two light emitting regions,
In, the stress release mould group region is filled with stress release material.
2. the apparatus according to claim 1, which is characterized in that the light emitting region is arranged in array, it is described at least one
Stress release mould group includes multiple stress release mould groups, the multiple stress release mould group along the array line direction and/or
Column direction is set between two adjacent light emitting regions.
3. the apparatus according to claim 1, which is characterized in that the stress release material is along vertical with the functional film layer
Direction bending be in preset shape.
4. device according to claim 3, which is characterized in that the preset shape includes the group of one or more of
It closes：Convex, concave arc shape, shape trapezoidal, the wide centre in both ends is narrow.
5. the apparatus according to claim 1, which is characterized in that the stress release material includes shape-memory polymer material
Material.
6. device according to claim 5, which is characterized in that the stress release mould group is vertical with the functional film layer
Direction on completely through or part run through the multiple functional film layer.
7. the apparatus according to claim 1, which is characterized in that the multiple functional film layer include the substrate being sequentially overlapped,
Inorganic layer, film transistor device layer, luminescent layer and encapsulated layer.
8. device according to claim 7, which is characterized in that the substrate includes flexible organic layer and flexible base layer,
The flexible base layer is set to the surface of side of the flexible organic layer close to the inorganic layer.
9. a kind of stretchable display device manufacturing method, which is characterized in that the method is：
Preparation provides rigid substrates, and the rigid substrates surface includes that multiple preset display areas and at least one stress are released
Region is put, wherein at least one described stress release region is separately positioned on the non-light-emitting area between two display areas
Domain；
In the display area, multiple functional film layers of preparation superposition are to constitute the light emitting region for playing the role of display；
Stress release material is coated in the stress release region；And
The rigid substrates are removed.
10. according to the method described in claim 9, it is characterized in that, being coated with stress release material in the stress release region
Before, further comprise：
There is the mold along the direction curved preset shape vertical with the functional film layer in stress release region setting；
Wherein, include in stress release region coating stress release material：
The stress release material is coated on the surface of the mold.
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| CN111429803A (en) * | 2020-03-31 | 2020-07-17 | 上海天马微电子有限公司 | Flexible display panel and display device |
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