CN209515744U - Flexible display screen - Google Patents
Flexible display screen Download PDFInfo
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- CN209515744U CN209515744U CN201920401165.8U CN201920401165U CN209515744U CN 209515744 U CN209515744 U CN 209515744U CN 201920401165 U CN201920401165 U CN 201920401165U CN 209515744 U CN209515744 U CN 209515744U
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- display screen
- flexible display
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Abstract
The utility model relates to a kind of flexible display screen, which includes: flexible base board；Buffer layer is set on flexible base board；Device layer is set on buffer layer；Film layer is supported, is set on device layer；And encapsulated layer, it is set in support film layer.The utility model in flexible display screen by increasing by one layer of support film layer, pass through the stiffness of increased support film layer itself, reduce the angle of bending, discharge stress when bending uniformly, it avoids locally bending the excessive display problem for causing material to be broken of degree, to enhance the bend resistance ability of flexible display screen.
Description
Technical field
The utility model relates to a kind of flexible display screens, more particularly to a kind of flexible display screen.
Background technique
The flexible display screen of the prior art is usually that polyimide resin (Polyimide, PI) is used to be used as flexible base board,
The materials such as deposit polycrystalline silicon (poly), metal (metal) form device architecture on it, then form envelope on device architecture again
Layer is filled, flexible display screen is ultimately formed, please refers to shown in Fig. 8.
In the process of implementing the utility model, the inventor finds that the existing technology has at least the following problems:
On the flexible display screen of the prior art other than encapsulated layer, other protection structures are not made, and then cause soft
Property display screen in terms of Shortcomings.Its when in use, after repeatedly bending, metal (metal) easily wrecks；
Meanwhile polysilicon (poly) is relatively crisp, when flexible display screen bending angle is excessive, is also easy to cause polysilicon (poly) disconnected
Folding.
Therefore, be badly in need of a kind of flexible display screen, with solve the flexible display screen of the prior art in terms of
The problem of existing deficiency.
Utility model content
For solve the problems, such as the flexible display screen of the prior art in terms of existing for it is insufficient, this is practical new
Type embodiment provides a kind of flexible display screen.Specific technical solution is as follows:
In a first aspect, providing a kind of flexible display screen, wherein flexible display screen includes:
Flexible base board；
Buffer layer is set on flexible base board；
Device layer is set on buffer layer；
Film layer is supported, is set on device layer；And
Encapsulated layer is set in support film layer.
In the first possible implementation of first aspect, the material of flexible base board is polyimide resin
(Polyimide, PI).
In second of possible implementation of first aspect, buffer layer further include: silicon nitride layer is set to flexible base board
On；And silicon oxide layer, it is set on silicon nitride layer, device layer is set on silicon oxide layer.
In the third possible implementation of first aspect, device layer further include: polysilicon layer is set to buffer layer
On；Gate insulating layer is set on polysilicon layer；The first metal layer is set on gate insulating layer；Interlayer insulating film, setting
In on the first metal layer；Second metal layer is set on interlayer insulating film；Flatness layer is set in second metal layer；And have
Machine LED device layer, is set on flatness layer, and support film layer is set on flatness layer.
In the 4th kind of possible implementation of first aspect, multiple apertures are additionally provided on device layer, multiple apertures are located at
The non-subpixel area of device layer, support film layer are located on device layer and in multiple apertures.
In the 5th kind of possible implementation of first aspect, the material for supporting film layer is polyimides material of the same clan or gathers
Methyl methacrylate.
The utility model has had the advantage that compared with prior art:
The utility model passes through increased support film layer itself by increasing by one layer of support film layer in flexible display screen
Stiffness reduces the angle of bending, discharges stress when bending uniformly, avoids locally bending that degree is excessive to cause material to be broken
Display problem, to enhance the bend resistance ability of flexible display screen (device layer).
Meanwhile by selecting the support film layer of different materials to change its stiffness, enhance flexible show to reach to change
Display screen (device layer) bending angle realizes the bending angle for changing flexible display screen (device layer) by flexible selection；And
It, can be in the bend resistance ability for realizing enhancing flexible display screen (device layer) and since support film layer has certain encapsulation ability
While, enhance the encapsulation ability of flexible display screen.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of the flexible display screen of an embodiment of the present invention.
Fig. 2 is another structural schematic diagram of the flexible display screen of an embodiment of the present invention.
The structural schematic diagram of the flexible display screen of two embodiment of Fig. 3 the utility model.
Fig. 4 is the step flow diagram of the production method of the flexible display screen of three embodiment of the utility model.
Fig. 5 is the step flow diagram of formation buffering (buffer) layer of an embodiment of the present invention.
Fig. 6 is the step flow diagram of the formation device layer of an embodiment of the present invention.
Fig. 7 is the step flow diagram of the formation support film layer of an embodiment of the present invention.
Fig. 8 is the structural schematic diagram of the flexible display screen of the prior art.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
In one embodiment of the utility model, referring to FIG. 1, it illustrates the Flexible Displays of an embodiment of the present invention
A kind of structural schematic diagram of screen 1.Flexible display screen 1 includes flexible base board 2, buffering (buffer) layer 3, device layer 4, support film layer
5 and encapsulated layer 6, in which:
Flexible base board 2 is set to the lower section of flexible display screen 1, is mainly buffer layer 3, device layer 4, support film layer 5
Support is provided with encapsulated layer 6.The material of flexible base board 2 disclosed in the present embodiment is polyimide resin (Polyimide, PI),
But it is not limited thereto.The thickness of flexible base board 2 is preferably 50-250nm, but is not limited thereto.
Referring again to Fig. 1, buffers (buffer) layer 3 and be set on flexible base board 2, buffering (buffer) layer 3 is for making
The combination of device layer 4 and flexible base board 2 is more firm, while reducing the bright voltage that opens of device layer 4, improves luminous efficiency.Buffering
(buffer) thickness of layer 3 is preferably 200-400nm, but is not limited thereto.
In order to be described further to above-mentioned flexible display screen 1 shown in FIG. 1, referring to FIG. 2, it illustrates originally practical new
Another structural schematic diagram of the flexible display screen 1 of one embodiment of type.(buffer) layer 3 is buffered disclosed in the present embodiment further includes
Silicon nitride (SiN) layer 31 and silica (SiO) layer 32, silicon nitride (SiN) layer 31 are set on flexible base board 2, silica (SiO)
Layer 32 is set on silicon nitride (SiN) layer 31, and device layer 4 is set on silica (SiO) layer 32, so buffers (buffer) layer 3
Material and structure be not limited thereto, those skilled in the art can also other be suitable according to the selection of actual device layer 4
Material and structure buffering (buffer) layer 3.
Referring again to Fig. 1, device layer 4 is set on buffering (buffer) layer 3, and device layer 4 is for executing Flexible Displays
The function of the display picture of screen 1.The thickness of device layer 4 is preferably 5-15 μm, but is not limited thereto.Referring again to Fig. 2, originally
Device layer 4 disclosed in embodiment further includes polysilicon (Poly) layer 41, gate insulating layer 42, the first metal layer 43, layer insulation
(ILD) layer 44, second metal layer 45, flatness layer (PLN) 46 and Organic Light Emitting Diode (OLED) device layer 47, polysilicon
(Poly) layer 41 is set on buffering (buffer) layer 3, and polysilicon (Poly) layer 41 passes through buffering (buffer) layer 3 and flexible base
Plate 2 formed it is firm combine, and etch component graphics in need on polysilicon (Poly) layer 41, in the present invention for
The component graphics can not have particular/special requirement, referring to the conventional selection of those skilled in the art.
Gate insulator (GI) layer 42 is set on polysilicon (Poly) layer 41, so that polysilicon (Poly) layer 41 and the first gold medal
Belong to layer 43 to insulate；The first metal layer 43 is set on gate insulator (GI) layer 42；Layer insulation (IDL) layer 44 is set to the first gold medal
Belong on layer 43, so that the first metal layer 43 and second metal layer 45 insulate；Second metal layer 45 is set to layer insulation (ILD) layer
On 44, flatness layer (PLN) 46 is set in second metal layer 45, so that by polysilicon (Poly) layer 41, gate insulator (GI) layer
42, thin film transistor (TFT) layer that the first metal layer 43, layer insulation (ILD) layer 44 and second metal layer 45 are formed
With preferable film layer covering power, Organic Light Emitting Diode (OLED) device layer 47 is set on flatness layer (PLN) 46, right device
The structure of part layer 4 is not limited thereto, and those skilled in the art can also the other knots of introduction selection according to the present utility model
The device layer 4 of structure.
Referring again to Fig. 1,2, film layer 5 is supported to be set on device layer 4, support film layer 5 be preferably have it is certain rigid
Property and flexible material be raw material, such as can be polyimides material of the same clan, hardness should be greater than polyimides, flexible
Slightly worse than polyimides；It may be polymethyl methacrylate, Zhi Xu points hardness is slightly larger than its flexible base board, and pliability is slightly
Difference；Also it can be other organic or inorganic materials, hardness need to be met greater than flexible base board, pliability is slightly worse than flexible base board.
The thickness of support film layer 5 can be selected according to the hardness and pliability of material.Pass through the anti-crawl agentdefiection of increased support film layer 5 itself
Property, to enhance the bend resistance ability of flexible display screen 1 (device layer 4).Since different materials has different stiffnesses,
When supporting the selection of film layer 5, it can be increased by selecting different materials to change the stiffness of support film layer 5 with reaching to change
Strong flexible display screen 1 (device layer 4) bending angle, realizes and changes flexible display screen 1 (device layer 4) by flexible selection
Bending angle；It can also be selected according to its compactness, to reach certain encapsulation ability, make it while there are enabling capabilities
With encapsulation ability.So the setting position of support film layer 5 is not limited thereto, and those skilled in the art can also be practical new according to this
Support film layer 5 is set to other suitable positions by the introduction selection of type, such as can also be set on buffering (buffer) layer 3
(lower section of device layer 4), essence are identical as the technical solution of the application, it should also belong to the protection scope of the application.
Referring again to Fig. 1,2, encapsulated layer 6 is set in support film layer 5, and the thickness of encapsulated layer 6 is preferably 8-12 μm, but
It is not limited thereto.Encapsulated layer 6 preferably covering and fully wrapped around supporting layer 5, to reach more preferably packaging effect, but not with
This is limited.Can there is no particular/special requirement for the selection of encapsulated layer 6 in the present invention, referring to the normal of those skilled in the art
Rule selection.
In two embodiments of the utility model, referring to FIG. 3, it illustrates the Flexible Displays of two embodiment of the utility model
The structural schematic diagram of screen.Flexible display screen 1 includes flexible base board 2, buffering (buffer) layer 3, device layer 4, support film layer 5 and envelope
Fill layer 6, flexible base board 2, buffering (buffer) layer 3, device layer 4, support film layer 5 and encapsulated layer 6 material selection and setting
Mode please refers to shown in an embodiment.
Referring again to Fig. 3, the present embodiment and the difference of an embodiment are, multiple apertures 48 are additionally provided on device layer 4,
Multiple apertures 48 are located at the non-subpixel area of device layer 4, to prevent from influencing the illumination effect of device layer 4, as multiple apertures
The design of 48 size and spacing can not have particular/special requirement in the present invention, can refer to product (flexible display screen 1) and set
Bending angle needed for timing is designed.
Support film layer 5 is located on device layer 4 and in multiple apertures 48, can preferably make to support 5 shape of film layer by sedimentation
At in multiple apertures 48 and on device layer 4, but it is not limited thereto.When flexible display screen 1 is bent, it is located at multiple apertures 48
Interior support film layer 5 can provide the rigidity of horizontal direction to device layer 4, prevent from locally bending excessive.Support film layer 5 be preferably
Having certain rigidity and flexible material is raw material, specific selection can design according to actual needs bending angle simultaneously
Compounding ingredient rigidity and aperture 48 can also be selected apart from progress according to its compactness, to reach certain encapsulation energy
Power makes it while having enabling capabilities and encapsulation ability.
In three embodiments of the utility model, referring to FIG. 4, it illustrates the Flexible Displays of three embodiment of the utility model
The step flow diagram of the production method 7 of screen 1.The production method 7 of flexible display screen 1 includes the following steps 701-705,
In:
Step 701: forming flexible base board 2.
Specifically, on the glass substrate by polyimide resin (Polyimide, PI) coating, being formed soft by rubbing method
Property substrate 2, after the subsequent step for the flexible display screen 1 that completes, then through laser irradiation, separation of glasses substrate and flexible base
The generation type of plate 2, right flexible base board 2 is not limited thereto, and those skilled in the art according to the present utility model can also teach
It leads and selects other suitable generation types.
Step 702: buffering (buffer) layer 3 in being formed on flexible base board 2.
In a preferred embodiment, it does for the production method 7 to above-mentioned flexible display screen 1 shown in Fig. 4 and further retouches
It states, referring to FIG. 5, it illustrates the step 8 process signals of the formation of three embodiment of the utility model buffering (buffer) layer 3
Figure.The step 8 for forming buffering (buffer) layer 3 further includes step 801-802, in which:
Step 801: in formation silicon nitride (SiN) layer 31 on flexible base board 2.
Specifically, silicon nitride (SiN) is deposited on flexible base board 2 by sedimentation, silicon nitride (SiN) layer 31 is formed,
But it is not limited thereto.
Step 802: in formation silica (SiO) layer 32 on silicon nitride (SiN) layer 31.
Specifically, silica (SiO) is deposited on silicon nitride (SiN) layer 31 by sedimentation, silica is formed
(SiO) layer 32, but be not limited thereto.
Step 703: in formation device layer 4 on buffering (buffer) layer 3.
In a preferred embodiment, it does for the production method 7 to above-mentioned flexible display screen 1 shown in Fig. 4 and further retouches
It states, referring to FIG. 6, it illustrates step 9 flow diagrams of the formation device layer 4 of three embodiment of the utility model.Shaper
The step 9 of part layer 4 further includes step 901- step 907, in which:
Step 901: in formation polysilicon (Poly) layer 41 on buffering (buffer) layer 3, and in polysilicon (Poly) layer 41
On etch the component graphics of needs.
Specifically, polysilicon (Poly) is deposited on silica (SiO) layer 32 by sedimentation, polysilicon is formed
(Poly) layer 41, the component graphics of needs are etched using light shield, but are not limited thereto.
Step 902: in formation gate insulator (GI) layer 42 on polysilicon (Poly) layer 41.
Specifically, in being sequentially depositing SiO, SiN on silica (SiO) layer 32, being formed gate insulator (GI) by sedimentation
Layer 42, but be not limited thereto.
Step 903: in formation the first metal layer 43 on gate insulator (GI) layer 42.
Specifically, metal (Metal) is deposited on gate insulator (GI) layer 42 by sedimentation, the first metal is formed
Layer 43, but be not limited thereto.
Step 904: in formation layer insulation (ILD) layer 44 on the first metal layer 43.
Specifically, layer insulation (ILD) layer 44 is made on the first metal layer 43, so that the first metal layer 43 and the second gold medal
Belong to layer 45 to insulate.
Step 905: in formation second metal layer 45 on layer insulation (ILD) layer 44.
Specifically, metal (Metal) is deposited on layer insulation (ILD) layer 44 by sedimentation, the second metal is formed
Layer 45, but be not limited thereto.
Step 906: in formation flatness layer (PLN) 46 in second metal layer 45.
Specifically, flatness layer (PLN) 46 is made in second metal layer 45, so that by polysilicon (Poly) layer 41, grid
The thin film field-effect crystal that (GI) layer 42, the first metal layer 43, layer insulation (ILD) layer 44 and the second metal layer 45 of insulating are formed
Managing (TFT) layer has preferable film layer covering power, but is not limited thereto.
Step 907: in formation Organic Light Emitting Diode (OLED) device layer 4 on flatness layer (PLN) 46.
Specifically, the material of Organic Light Emitting Diode (OLED) device is successively deposited in flatness layer by vapour deposition method
(PLN) on 46, Organic Light Emitting Diode (OLED) device layer 4, but be not limited thereto.
Step 702: supporting film layer 5 in being formed on device layer 4.
Have certain rigidity and flexible material specifically, choosing, such as can be polyimides material of the same clan,
Hardness should be greater than polyimides, and pliability is slightly worse than polyimides；It may be polymethyl methacrylate, Zhi Xu points hardness
It is flexible slightly poor slightly larger than its flexible base board；It can also be other organic or inorganic materials, hardness need to be met and be greater than flexible base
Plate, pliability is slightly worse than flexible base board, but is not limited thereto.By sedimentation, which is deposited on device layer 4
On, form support film layer 5.
Meanwhile when supporting the selection of film layer 5, since different materials has different stiffnesses, selection can be passed through
Different material and the stiffness for changing support film layer 5, change enhancing flexible display screen 1 (device layer 4) bending angle to reach,
Realize the bending angle for changing flexible display screen 1 (device layer 4) by flexible selection；It can also be carried out according to its compactness
Selection, to reach certain encapsulation ability, make it while there are enabling capabilities and encapsulation ability.
In another preferred embodiment, in order to which the production method 7 to above-mentioned flexible display screen 1 shown in Fig. 4 is done further
Description, referring to FIG. 7, it illustrates step 10 flow diagrams of the formation support film layer 5 of three embodiment of the utility model.Shape
Step 10 at support film layer 5 further includes step 101- step 102, in which:
Step 101: in forming multiple apertures 48 in the non-subpixel area of device layer 4.
Specifically, in progress aperture 48, aperture 48 in the non-subpixel area of device layer 4 by way of radium-shine or etching
Size and adjacent two apertures 48 spacing referring to product design when required bending angle be designed, but not as
Limit.
Step 102: in the material of depositing support film layer 5 on device layer 4, forming support film layer 5, and make support film layer 5
In on device layer 4 and in multiple apertures 48.
Have certain rigidity and flexible material specifically, choosing, specific selection can be set according to actual needs
Curved the angle compounding ingredient rigidity and aperture distance of meter are selected, and by sedimentation, which is deposited on device layer 4
And in aperture 48, support film layer 5 is formed.
Step 703: in formation encapsulated layer 6 in support film layer 5.
Specifically, making encapsulated layer 6 in support film layer 5, make its covering and fully wrapped around supporting layer 5, preferably to reach
To more preferably packaging effect, but it is not limited thereto.
In production method 7 of above-mentioned flexible display screen 1 the step of, those skilled in the art can also be practical new according to this
The introduction of type, according to the setting position of support film layer 5, selection adjusts corresponding making step sequence, to realize support film layer 5
The production of different setting positions, essence are identical as the technical solution of the application, it should also belong to the protection scope of the application.
Several preferred embodiments of the utility model have shown and described in above description, but as previously described, it should be understood that
The utility model is not limited to forms disclosed herein, and is not to be taken as the exclusion to other embodiments, and can be used for
Other combinations, modifications, and environments, and above-mentioned introduction or correlation can be passed through within the scope of the inventive concept described herein
The technology or knowledge in field are modified.And changes and modifications made by those skilled in the art do not depart from the spirit of the utility model
And range, then it all should be in the protection scope of the appended claims for the utility model.
Claims (6)
1. a kind of flexible display screen, which is characterized in that the flexible display screen includes:
Flexible base board；
Buffer layer is set on the flexible base board；
Device layer is set on the buffer layer；
Film layer is supported, is set on the device layer；And
Encapsulated layer is set in the support film layer.
2. flexible display screen according to claim 1, which is characterized in that the material of the flexible base board is polyimides tree
Rouge (Polyimide, PI).
3. flexible display screen according to claim 1, which is characterized in that the buffer layer further include:
Silicon nitride layer is set on the flexible base board；And
Silicon oxide layer is set on the silicon nitride layer, and the device layer is set on the silicon oxide layer.
4. flexible display screen according to claim 1, which is characterized in that the device layer further include:
Polysilicon layer is set on the buffer layer；
Gate insulating layer is set on the polysilicon layer；
The first metal layer is set on the gate insulating layer；
Interlayer insulating film is set on the first metal layer；
Second metal layer is set on the interlayer insulating film；
Flatness layer is set in the second metal layer；And
Organic light emitting diode device layer is set on the flatness layer, and the support film layer is set on the flatness layer.
5. flexible display screen according to claim 1, which is characterized in that be additionally provided with multiple apertures, institute on the device layer
The non-subpixel area that multiple apertures are located at the device layer is stated, the support film layer is located on the device layer and the multiple
In aperture.
6. flexible display screen according to claim 1, which is characterized in that the material of the support film layer is that polyimides is same
Race's material or polymethyl methacrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401165.8U CN209515744U (en) | 2019-03-27 | 2019-03-27 | Flexible display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401165.8U CN209515744U (en) | 2019-03-27 | 2019-03-27 | Flexible display screen |
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| Publication Number | Publication Date |
|---|---|
| CN209515744U true CN209515744U (en) | 2019-10-18 |
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ID=68187757
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920401165.8U Expired - Fee Related CN209515744U (en) | 2019-03-27 | 2019-03-27 | Flexible display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113923278A (en) * | 2020-07-08 | 2022-01-11 | 深圳市柔宇科技股份有限公司 | Bendable device |
-
2019
- 2019-03-27 CN CN201920401165.8U patent/CN209515744U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113923278A (en) * | 2020-07-08 | 2022-01-11 | 深圳市柔宇科技股份有限公司 | Bendable device |
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