CN108847452A - A kind of stretchable display device and preparation method thereof - Google Patents
A kind of stretchable display device and preparation method thereof Download PDFInfo
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- CN108847452A CN108847452A CN201810610027.0A CN201810610027A CN108847452A CN 108847452 A CN108847452 A CN 108847452A CN 201810610027 A CN201810610027 A CN 201810610027A CN 108847452 A CN108847452 A CN 108847452A
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- display device
- elastic substrate
- protrusion
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/841—Self-supporting sealing arrangements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Microelectronics & Electronic Packaging (AREA)
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention provides a kind of stretchable display device, solve the problems, such as that the stretchable degree of stretchable display device is low in the prior art.A kind of stretchable display device that one embodiment of the invention provides, including：Elastic substrate, multiple protrusions in the elastic substrate are set, the elastic substrate and the multiple convex sets are at stereochemical structure, the functional film layer being superposed in the elastic substrate for being equipped with multiple protrusions, wherein the functional film layer is superimposed in the elastic substrate and the stereochemical structure of the protrusion composition；When stretching to display device, the protrusion in the elastic substrate stretches, and increases the stretchable degree of display device.
Description
Technical field
The present invention relates to field of display technology, and in particular to a kind of stretchable display device and preparation method thereof.
Background technique
With the development of display technology, various display devices have been developed, in TV, personal computer, above-knee
Computer, tablet PC, mobile phone, curved surface TV, wearable device etc. are widely used in a variety of applications.In order to meet user to new
The greater demand of function is being made great efforts the display device for developing new model, such as stretchable display device, that is, is being desirably formed
Display device can have extension or contraction and curved performance when it is pulled.And realize the weight of stretchable performance
Overcome difficult point is how to realize that display base plate is stretchable, however when stretching to display base plate, the extension of substrate is shunk
Or pressure caused by being bent may make the metal wire of substrate crack even fracture probably occur, that is to say, that even if
Display base plate can stretch, but metal wire will not be stretched with the stretching of display base plate.In addition to this, display base plate
On pixel circuit in pixel device can not be stretched with the stretching of substrate.To cause stretchable display device
Stretchable degree it is very low.
Summary of the invention
In view of this, solving the embodiment of the invention provides a kind of stretchable display device and showing dress in the prior art
Set the problem of stretchable degree is low, metal wire is easily broken off in drawing process.
A kind of stretchable display device provided by the invention, including：
Elastic substrate；
The multiple protrusions being located in the elastic substrate；And
It is superposed the functional film layer in the elastic substrate and the multiple convex surfaces.
Wherein, the protrusion linearly arranges in the elastic substrate plane along default draw direction.
Wherein, the protrusion is arranged in the elastic substrate plane in matrix form.
Wherein, the functional film layer includes：
For driving the drive circuit layer of pixel light emission, including multiple driving units and with the multiple driving unit point
The conducting wire not being electrically connected；And
The pixel light emission layer being located in the drive circuit layer.
Wherein, the driving unit is arranged in the gap between the protrusion of adjacent two.
Wherein, the upper surface of at least one protrusion is arranged at least one described conducting wire.
Further, the upper surface of at least one protrusion is arranged in the crossover location in length and breadth of at least one conducting wire.
Wherein, the material of the protrusion is flexible organic material.
Further, the display device further includes：
The barrier film being located between the elastic substrate and the functional film layer, the barrier film are covered on the elasticity lining
On bottom and the convex surfaces, the surface shape of the barrier film and the convex shape of the convex surfaces are consistent.
As another aspect of the present invention, one embodiment of the invention provides a kind of side for preparing stretchable display device
Method, which is characterized in that including：
One rigid substrates are provided, prepare elastic substrate on the rigid substrates；
Multiple protrusions are prepared in the elastic substrate；
The superposition preparation functional film layer in the elastic substrate for being equipped with multiple protrusions；And
The rigid substrates are removed.
Wherein, the functional layer includes：For driving the drive circuit layer of pixel light emission, including multiple driving units and
The conducting wire being electrically connected with the multiple driving unit；And it is located at the pixel light emission layer in the drive circuit layer；
Multiple protrusions are wherein prepared in the elastic substrate includes：
The protrusion is prepared around the production site of the driving unit；And/or
The protrusion is prepared in the crossover location in length and breadth of the conducting wire.
Protrusion, the shape in elastic substrate is arranged in a kind of stretchable display device provided by the present invention in elastic substrate
At stereochemical structure, other functional film layer structures of display device are formed a film in the elastic substrate with protrusion, functional membrane
The lower surface of layer and the shape of the elastic substrate with protrusion are consistent, when stretching to screen body, in elastic substrate
Protrusion stretching, extension increases the extensible of elastic substrate and functional film layer to drive the functional film layer stretching, extension being covered in protrusion
Degree, and then improve the stretchable degree of display device.
Detailed description of the invention
Fig. 1 show a kind of structural schematic diagram of stretchable display device of one embodiment of the invention offer.
Fig. 2 show a kind of arranged distribution figure of stretchable display device protrusions of one embodiment of the invention offer.
Fig. 3 show a kind of arranged distribution figure of stretchable display device protrusions of one embodiment of the invention offer.
Fig. 4 show a kind of arranged distribution figure of stretchable display device protrusions of one embodiment of the invention offer.
Fig. 5 show a kind of structural schematic diagram of stretchable display device of one embodiment of the invention offer.
Fig. 6 show a kind of process signal of the preparation method of stretchable display device of one embodiment of the invention offer
Figure.
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, all 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 a kind of stretchable display device of one embodiment of the invention offer, including：Elastic substrate 2；Setting exists
Multiple raised 3 in elastic substrate 2；The functional film layer 7 in elastic substrate 2 and multiple raised 3 surfaces is prepared, wherein elastic substrate
2 and multiple raised 3 form stereochemical structure, and wherein functional film layer 7 includes for realizing display device normal work, functional film layer 7
For realizing display device work normally required for multiple film layers, wherein the shape of the lower surface of functional film layer 7 and protrusion 3 and
The shape for the stereochemical structure that elastic substrate 2 forms is consistent, in order to enable the tensile property of display device is more preferable, the present invention one
In embodiment, the surface shape of at least one film layer in functional film layer 7 and the convex shape on raised 3 surfaces are consistent,
In other embodiments of the invention, the surface shape of each film layer in functional film layer 7 and the convex shape on raised 3 surfaces are kept
Unanimously；Be designed in this way, in display device when being stretched, protrusion 3 is stretched, and with protrusion 3 and 2 groups of elastic substrate
At stereochemical structure the film layer that is consistent of shape in the part that is covered in protrusion 3 also stretched therewith, increasing
The big stretchable degree of the functional film layer, and then increase the stretchable degree of display device, compared with the existing technology in
The stretchable degree of stretchable display device, the display device of the structure improves 3%-5%.
It should be appreciated that whether the surface shape of the single film layer in functional film layer 7 needs the convex shape with raised 3 surfaces
Being consistent can be selected with actual fabrication demand according to display device, and this is not limited by the present invention.
It should be appreciated that the material of elastic substrate 2 can be selected according to actual needs, such as can choose with high resiliency
Organic silicon rubber (PDMS), when being stretched to display device, elastic substrate 2 have excellent tensility, into
And make display device that there is excellent tensility.
A kind of stretchable display device provided in an embodiment of the present invention, is arranged multiple raised 3 in elastic substrate 2, thus
Elastic substrate 2 is formed into stereochemical structure, when display device is stretched, multiple raised 3 be arranged in elastic substrate are carried out
Expansion, to increase the stretchable degree of stretchable display device.
In practical applications, it generally requires to stretch display device in a certain direction, therefore real in the present invention one
It applies in example, the linear arrangement mode arrangement along default draw direction in elastic substrate 2 of the protrusion 3 in elastic substrate 2, aobvious
When showing device stretches in the stretching direction, protrusion 3 is unfolded on the direction of stretching, and increasing that this side up, display device is stretchable
Degree.In one embodiment of the invention, 3 section on the draw direction of display device of protrusion is semicircle, the present invention its
In its embodiment, section of the protrusion 3 on display device draw direction can also be the V-shape of handstand, or Duo Gelian
Continuous semicircle composition, multiple V-shapes compositions continuously to stand upside down, can also for V-shaped hybrid combining that is semicircle, standing upside down and
At this is not limited by the present invention.
When stretching to display device, when draw direction is the Y direction in display device, protrusion 3 is in elasticity
Linear distribution on substrate 2 is then parallel to the Y-axis setting of display device, as shown in Figure 2.When draw direction is in display device
X-direction when, 3 linear distribution in elastic substrate 2 of protrusion is then parallel to the X-axis setting of display device, such as Fig. 3 institute
Show.It should be appreciated that linear arrangement mode of the protrusion 3 in elastic substrate 2 is can be pre- according to display device in practical application
If stretching and being designed on draw direction, as long as therefore protrusion 3 in elastic substrate 2 it is linear arrange be parallel to stretching side
To, such as in other embodiments, linear arrangement of the protrusion 3 in elastic substrate 2 can also be parallel in display device
Diagonal line, this is not limited by the present invention.
However in practical applications, when carrying out all-around stretch to display device, raised 3 linearly dividing in elastic substrate 2
Cloth can not meet requirement, and in one embodiment of the invention, protrusion 3 is arranged in elastic substrate 2 in matrix form, as shown in figure 4, such
Design can satisfy to display device towards stretching.
In one embodiment of the invention, wherein functional film layer 7 includes：For driving the drive circuit layer of pixel light emission, successively
Hole injection layer, hole transmission layer, pixel light emission layer, electron transfer layer, the electron injecting layer, metal being located in drive circuit layer
Cathode layer；Wherein drive circuit layer includes multiple driving units 5 and the conducting wire 6 that is separately connected with multiple driving units 5, driving
Unit 5 is for controlling whether pixel light emission layer shines, and in an embodiment of the present invention, driving unit 5 is thin film transistor (TFT), at this
In invention other embodiments, driving unit 5 can also be other switches, and this is not limited by the present invention.
It should be appreciated that in functional film layer 7 each film layer design can be adjusted according to actual needs, the present invention to this not
It limits.
In order to avoid during stretching, the driving unit in drive circuit layer is stretched influence, in order to guarantee to drive
The safety of unit, the degree that display device can be stretched is often smaller, in one embodiment of the invention, as shown in Figure 1, driving electricity
Driving unit 5 is arranged in the gap between two neighboring raised 3 in the floor of road, convex when stretching to display device
It rises and 3 is unfolded, and the driving unit 5 between two neighboring raised 3 in gap will not be stretched, it can increase display device
The safety of driving unit 5 is also ensured while draftability.
When stretching to display device, the very possible crack of conducting wire 6 in drive circuit layer is even broken, because
In this one embodiment of the invention, the protrusion 3 in elastic substrate 2 is located at 6 lower section of conducting wire in drive circuit layer, i.e. driving circuit
6 cabling of conducting wire in layer is provided with the underside shape and protrusion 3 of the part conducting wire 6 in protrusion 3 on protrusion 3
Shape it is identical, when stretching to display device, protrusion 3 is unfolded, the exhibition to the conducting wire 6 being arranged in protrusion 3
Buffer function is opened, the stress of conducting wire 6 during balanced stretch is asked so as to avoid the fracture of conducting wire 6 during stretching
Topic.
In order to enable the draftability of display device is higher, in one embodiment of the invention, cabling is arranged along protrusion 3 in conducting wire 6, i.e.,
The upper and lower surfaces shape for the part conducting wire 6 being arranged in protrusion 3 is consistent with the shape of protrusion 3, to display device
When stretching, since protrusion 3 is unfolded, so that conducting wire 6 of the cabling in protrusion 3 is also unfolded, and whole process, conducting wire
6 due to the stretching to display device not elongating, and the physical length of conducting wire 6 is effectively avoided and led there is no elongated
The breakage problem of line 6 during stretching.
But in the manufacturing process of actual display device, to reach the optimal performance of display device, can stretch
Conducting wire 6 and driving unit 5 are protected, prepares drive circuit layer in elastic substrate 2 and protrusion 3, the conducting wire 6 in drive circuit layer
Need cabling in protrusion 3, driving unit 5 is arranged in two neighboring raised 3 gap, and the cabling distribution of conducting wire 6 is often
It is complicated, the technology difficulty of subsequent mask is increased, protrusion 3 is located at conducting wire 6 and intersects position in length and breadth by one embodiment of the invention
The lower section set both had been able to satisfy the drawing of display device as shown in figure 4, protrusion 3 to be arranged in the lower section of the crossover location in length and breadth of conducting wire 6
It stretches, and the technology difficulty of subsequent mask can be reduced.
In one embodiment of the invention, the material of protrusion 3 is flexible organic material, soft when stretching to display device
Property organic material flexibility can provide buffer function for driving unit 5 and conducting wire 6.Protrusion 3 in an embodiment of the present invention
Material is polyimide organic gel, and polyimide organic gel has oxygen content low, there is higher plasticity and tough after solidification
Property, it can not only meet during stretching, tensility can be good, and can reduce the problem of water oxygen is corroded.
It should be appreciated that in other embodiments of the present invention, other glue can also be used in raised material, and the present invention does not make this
It limits.
When preparing protrusion 3 in elastic substrate 2, no matter what kind of organic gel is used, can make 5 He of driving unit
Conducting wire 6 is because contacting with organic gel and leading to the problem of a degree of water oxygen corrosion, and in one embodiment of the invention, this can
Display device is stretched, as shown in figure 5, further include the barrier film 4 being located between elastic substrate 2 and functional film layer 7, wherein barrier film
4 are covered in the stereochemical structure of 3 composition of elastic substrate 2 and protrusion, wherein the vertical tangent plane shape of barrier film 4 and protrusion 3 and elasticity
The shape of the vertical tangent plane for the stereochemical structure that substrate 2 forms is identical.
A kind of stretchable display device provided in an embodiment of the present invention is equipped with one among elastic substrate 2 and functional film layer 7
Layer barrier film 4, functional film layer 7 and the barrier film 4 of elastic substrate 2 are separated, and are effectively avoided because used in preparation protrusion
Flexible organic material and bring water oxygen etching problem.
One embodiment of the invention provides a kind of method for preparing stretchable display device, as shown in fig. 6, including：
Step 101：One rigid substrates are provided, prepare elastic substrate on the rigid substrate.
Step 102：Multiple protrusions are prepared in elastic substrate, elastic substrate and convex sets are at stereochemical structure.
In an embodiment of the present invention, raised material is flexible organic material, in other embodiments of the present invention, protrusion
Material be also polyimide organic gel, in other embodiments of the present invention, raised material may be that other flexibilities have
Machine material, this is not limited by the present invention.
Distribution mode of the protrusion in elastic substrate no longer repeats herein as described in aforementioned.
Step 103：The superposition preparation functional film layer in the elastic substrate for being equipped with multiple protrusions；Wherein functional film layer includes using
Multiple film layers required for realizing that display device works normally.
Step 104：Rigid substrates are removed.
A kind of preparation method of stretchable display device provided in an embodiment of the present invention is right after removing rigid substrates
Elastic substrate is stretched, and protrusion is unfolded in elastic substrate, increases the stretchable degree of display device.
In an embodiment of the present invention, functional film layer successively includes：For driving drive circuit layer, the hole of pixel light emission
Implanted layer, hole transmission layer, pixel light emission layer, electron transfer layer, electron injecting layer, metal cathode layer；Wherein drive circuit layer,
Hole injection layer, hole transmission layer, pixel light emission layer, electron transfer layer, electron injecting layer, metal cathode layer are by elasticity
It forms a film in the stereochemical structure of substrate and protrusion composition；Wherein drive circuit layer include multiple driving units and with it is multiple
The conducting wire that driving unit is electrically connected, when preparing multiple protrusions in elastic substrate, around the production site of driving unit
Preparation protrusion, the display device that the embodiment of the present invention is prepared, when being stretched to display device, protrusion expansion, and
The driving unit then not influence of Tensile between protrusion.
In one embodiment of the invention, when preparing multiple protrusions in elastic substrate, in the position that multiple conducting wires intersect in length and breadth
Preparation protrusion, the embodiment of the present invention are prepared in stretchable display device method when preparing drive circuit layer in elastic substrate, will
The position that multiple conducting wires intersect in length and breadth is located in protrusion, can reduce subsequent mask technique.
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：
Elastic substrate；
The multiple protrusions being located in the elastic substrate；And
It is superposed the functional film layer in the elastic substrate and the multiple convex surfaces.
2. a kind of stretchable display device according to claim 1, which is characterized in that the protrusion is in the elastic substrate
It is linearly arranged in plane along default draw direction.
3. a kind of stretchable display device according to claim 1, which is characterized in that the protrusion is in the elastic substrate
It arranges in plane in matrix form.
4. a kind of stretchable display device according to claim 1, which is characterized in that the functional film layer includes：
For driving the drive circuit layer of pixel light emission, including multiple driving units and with the multiple driving unit electricity respectively
The conducting wire of connection；And
The pixel light emission layer being located in the drive circuit layer.
5. a kind of stretchable display device according to claim 4, which is characterized in that the driving unit is arranged adjacent
Two it is described protrusion between gap in.
6. a kind of stretchable display device according to claim 4, which is characterized in that at least one described conducting wire setting exists
The upper surface of at least one protrusion；Preferably, crossover location is located at described at least one at least one described conducting wire in length and breadth
The upper surface of protrusion.
7. a kind of stretchable display device according to claim 1, which is characterized in that the material of the protrusion has for flexibility
Machine material.
8. a kind of stretchable display device according to 1 to 7 any claim, which is characterized in that the display device is also
Including：
The barrier film being located between the elastic substrate and the functional film layer, the barrier film be covered on the elastic substrate and
In the convex surfaces, wherein the surface shape of the barrier film is consistent with the convex shape of the convex surfaces.
9. a kind of method for preparing stretchable display device, which is characterized in that including：
One rigid substrates are provided, prepare elastic substrate on the rigid substrates；
Multiple protrusions are prepared in the elastic substrate；
The superposition preparation functional film layer in the elastic substrate for being equipped with multiple protrusions；And
The rigid substrates are removed.
10. a kind of method for preparing stretchable display device according to claim 9, which is characterized in that the functional layer
Including：For driving the drive circuit layer of pixel light emission, including multiple driving units and distinguish with the multiple driving unit
The conducting wire of electrical connection；And it is located at the pixel light emission layer in the drive circuit layer；
Multiple protrusions are wherein prepared in the elastic substrate includes：
The protrusion is prepared around the production site of the driving unit；And/or
The protrusion is prepared in the crossover location in length and breadth of the conducting wire.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810610027.0A CN108847452B (en) | 2018-06-13 | 2018-06-13 | Stretchable display device and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810610027.0A CN108847452B (en) | 2018-06-13 | 2018-06-13 | Stretchable display device and preparation method thereof |
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| CN108847452B CN108847452B (en) | 2020-11-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111047991A (en) * | 2019-12-23 | 2020-04-21 | 厦门天马微电子有限公司 | Display panel, display device and manufacturing method thereof |
| WO2020118703A1 (en) * | 2018-12-14 | 2020-06-18 | 深圳市柔宇科技有限公司 | Flexible display screen and pareparation method therefor and flexible display device |
| CN111326607A (en) * | 2018-12-14 | 2020-06-23 | 昆山工研院新型平板显示技术中心有限公司 | Stretchable display panel, preparation method thereof and stretchable display device |
| CN111326068A (en) * | 2018-12-13 | 2020-06-23 | 昆山工研院新型平板显示技术中心有限公司 | Stretchable display panel and display device |
| 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 |
| CN111599800A (en) * | 2020-05-29 | 2020-08-28 | 上海天马微电子有限公司 | Display panel, display device and preparation method of display panel |
| CN111785754A (en) * | 2020-06-17 | 2020-10-16 | 固安翌光科技有限公司 | OLED screen body and preparation method thereof |
| CN115240547A (en) * | 2022-06-15 | 2022-10-25 | 昆山国显光电有限公司 | Display device and method for manufacturing the same |
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| CN111326068A (en) * | 2018-12-13 | 2020-06-23 | 昆山工研院新型平板显示技术中心有限公司 | Stretchable display panel and display device |
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| CN115240547A (en) * | 2022-06-15 | 2022-10-25 | 昆山国显光电有限公司 | Display device and method for manufacturing the same |
| CN115240547B (en) * | 2022-06-15 | 2023-06-23 | 昆山国显光电有限公司 | Display device and method for manufacturing the same |
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| CN108847452B (en) | 2020-11-06 |
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