CN111816675B - Stretchable display panel, preparation method thereof and display device - Google Patents
Stretchable display panel, preparation method thereof and display device Download PDFInfo
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- CN111816675B CN111816675B CN201910295496.2A CN201910295496A CN111816675B CN 111816675 B CN111816675 B CN 111816675B CN 201910295496 A CN201910295496 A CN 201910295496A CN 111816675 B CN111816675 B CN 111816675B
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- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 5
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- 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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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G—PHYSICS
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- 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
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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
- G09F9/33—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 being semiconductor devices, e.g. diodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
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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
- H10K71/20—Changing the shape of the active layer in the devices, e.g. patterning
- H10K71/221—Changing the shape of the active layer in the devices, e.g. patterning by lift-off techniques
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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
- H10K71/80—Manufacture or treatment specially adapted for the organic devices covered by this subclass using temporary substrates
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The application discloses a stretchable display panel, a preparation method thereof and a display device. The stretchable display panel includes: a polyimide substrate comprising a plurality of first sub-polyimide substrates, a plurality of second sub-polyimide substrates, and at least one third sub-polyimide substrate; a first wire over the first sub-polyimide substrate and the second sub-polyimide substrate; the first device is positioned above the first sub polyimide substrate, and the first lead is electrically connected with the first device; adjacent first sub polyimide substrates are connected through a second sub polyimide substrate, a closed area is formed, and a third sub polyimide substrate is positioned in the closed area; the first sub-polyimide substrate, the second sub-polyimide substrate, the first device and the first wire form a first device group. The stretchable display panel can shorten the processing time of laser, prolong the service life of a laser and improve the precision degree of a device.
Description
Technical Field
The present disclosure relates to the field of stretchable display technologies, and in particular, to a stretchable display panel, a method for manufacturing the same, and a stretchable display device.
Background
At present, two forms can be used for stretching a device, one is that the stretching function is realized by an electrode material which can be stretched, such as a composite material of polydimethylsiloxane and graphene or nano silver wires; the other is by patterning a non-stretchable metallic material.
The first scheme has strong enough stretching capability, but the electrical performance can not meet the application of a high-precision instrument, the second scheme also has the problem that the device structure for realizing the stretching capability through patterning has the same problem that the patterned electrode circuit needs to occupy space, so that the integration level can not be improved, polyimide is taken as a substrate of a metal wire, the stretching performance is realized through patterning of polyimide, but the patterning of polyimide can be realized through a laser or exposure development mode, the types of polyimide which can be exposed and developed are rare, the manufacturing thickness is thin, and the high-temperature process can not be supported, or the laser stripping has difficulty, so that the laser mode can be adopted.
The working method of laser is to use a laser to remove all polyimide in the non-wire area, but the working method has the defects of long processing time and shortened service life of the laser.
Disclosure of Invention
The application mainly provides a stretchable display panel, a preparation method thereof and a stretchable display device. The defect of long processing time and shortened service life of the laser in the laser method is overcome.
In a first aspect, embodiments of the present invention provide a stretchable display panel, including:
the polyimide substrate comprises a plurality of first sub-polyimide substrates, a plurality of second sub-polyimide substrates and at least one third sub-polyimide substrate;
a first wire over the first sub-polyimide substrate and the second sub-polyimide substrate;
the first device is positioned above the first sub polyimide substrate, and the first lead is electrically connected with the first device;
adjacent first sub polyimide substrates are connected through a second sub polyimide substrate, a closed area is formed, and a third sub polyimide substrate is positioned in the closed area;
the first sub-polyimide substrate, the second sub-polyimide substrate, the first device and the first wire form a first device group.
In one possible design, the shape of the orthographic projection of the first wire on the first sub-polyimide substrate is a straight line; the orthographic projection shape of the first wire on the second sub polyimide substrate is a straight line or a curve.
In one possible design, the orthographic projection of the first wire on the polyimide substrate is located at the central region of the first sub-polyimide substrate and the second sub-polyimide substrate, and the width of the first wire is less than or equal to the width of the second sub-polyimide substrate.
In one possible design, the stretchable display panel further comprises a second device group; the second device group comprises a third sub polyimide substrate, a fourth sub polyimide substrate, a second device and a second wire; the fourth sub-polyimide substrate is positioned on the third sub-polyimide substrate; the second device and the second wire are positioned on the fourth sub polyimide substrate; the second device groups are connected to each other by second wires. By arranging the first device group and the second device group, the device density can be improved, and the difficulty that the high-tensile wire cannot be manufactured due to small space layout is solved.
In one possible design, the second device group further includes a first intermediate layer; the first intermediate layer is positioned between the third sub polyimide substrate and the fourth sub polyimide substrate; the first interlayer material comprises an elastomeric material, preferably polydimethylsiloxane. Because the wire portions of the first device group and the second device group overlap, the presence of the intermediate layer can isolate the overlapping portions of the wires without affecting movement of the devices during stretching.
In one possible design, a second intermediate layer is included in both the second device group and the first device group; the second intermediate layer is positioned on one side, far away from the device, of the polyimide substrate in the first device group and the second device group; the second device group and the first device group are respectively positioned on the upper side and the lower side of the second intermediate layer, so that a screen body with double-sided display is formed.
In one possible design, the thickness of the first and second intermediate layers is less than 10 μm, which is advantageous for reducing the overall thickness of the display panel.
In one possible design, the stretchable display panel further comprises an elastomer, the elastomeric material comprising one or more of silicone rubber, polyurethane, and acrylic. The elastomer made of an elastic material protects the device well from being damaged by stretching.
In a second aspect, embodiments of the present invention provide a stretchable display device comprising a stretchable display panel of any of the above.
In a third aspect, the present invention also provides a method for manufacturing a stretchable display panel, including:
coating a polyimide substrate on a base plate;
depositing metal on the polyimide substrate, and patterning to form a wire;
patterning the polyimide substrate to form a dry first sub-polyimide substrate, a plurality of second sub-polyimide substrates and at least one third sub-polyimide substrate;
forming a device on the wire;
an elastomer is formed surrounding the device.
The invention provides a stretchable display panel, a preparation method thereof and a stretchable display device,
through the polyimide substrate pattern that has kept the central region between the device, the stretchable display panel of this application can shorten the processing time of laser, has prolonged the life of laser instrument, has improved the productivity. A new group of device groups are formed on the reserved polyimide substrate patterns, so that the problem that high-density devices cannot be manufactured due to large occupied space for conducting wire and substrate imaging in order to realize the stretching function is solved, the precision degree of the devices can be effectively improved, and PPI can be remarkably improved when the device is applied to display. The new device group formed on the reserved polyimide substrate pattern can be positioned on the two sides opposite to the upper side and the lower side of the original device group, so that a double-sided display screen body is formed, meanwhile, the rigidity of the device substrate can be increased, which is equivalent to that of a polyimide substrate which is added on one side of the original integrated device, the device is protected, and the device is not easy to damage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic structural view of one embodiment of a stretchable display panel provided herein;
FIG. 2 is a schematic cross-sectional view of an embodiment of a stretchable display panel provided herein;
FIG. 3 is a schematic view of another embodiment of a stretchable display panel provided herein;
FIG. 4 is a schematic cross-sectional view of another embodiment of a stretchable display panel provided herein;
FIG. 5 is a schematic structural view of yet another embodiment of a stretchable display panel provided herein;
FIG. 6 is a schematic cross-sectional view of still another embodiment of a stretchable display panel provided herein;
fig. 7 is a schematic flow chart of a method for manufacturing a stretchable display panel provided by the application.
Reference numerals illustrate:
11-a first sub-polyimide substrate; 12-a second sub-polyimide substrate; 13-a third sub-polyimide substrate; 14-a fourth sub-polyimide substrate; 15-a fifth polyimide substrate; 16-a sixth polyimide substrate;
21-a first wire; 22-a second wire;
31-a first device; 32-a second device;
41-a first intermediate layer; 42-a second intermediate layer;
50-elastomer.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. The present application will be described in detail with reference to the accompanying drawings.
In an embodiment, referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an embodiment of a stretchable display panel provided in the present application; fig. 2 is a schematic cross-sectional view of an embodiment of a stretchable display panel provided in the present application. As shown in fig. 1, the stretchable display panel includes a plurality of first sub-polyimide substrates 11, a first conductive line 21, a first device 31, a plurality of second sub-polyimide substrates 12, and at least one third sub-polyimide substrate 13, wherein the first device 31 may be a photoelectric device or a sensor device that forms the display panel, and is not limited herein.
The first sub-polyimide substrate 11 and the second sub-polyimide substrate 12 are connected to form a closed region, the third sub-polyimide substrate 13 is a polyimide substrate that exists independently, and the third sub-polyimide substrate is located within the closed region. A first conductive line 21 and a first device 31 are provided on the first sub-polyimide substrate 11, a first conductive line 21 is provided on the second sub-polyimide substrate 12, the first device 31 is located above the first conductive line 21, the first conductive line 21 is electrically connected with the first device 31, and the first devices 31 are electrically connected through the first conductive line 21. I.e. a portion of the first wire 21 is located on the first sub-polyimide substrate 11 and another portion is located on the second sub-polyimide substrate 12. The size of the third polyimide substrate 13 can be adjusted according to practical situations to ensure that the tensile properties of the device are not affected.
It will be appreciated that the first sub-polyimide substrate 11 has thereon the first device 31 which is an island-shaped polyimide substrate, and the second sub-polyimide substrate 12 which is a bridge-shaped polyimide substrate.
The shape of the first sub-polyimide substrate 11 in fig. 1 may be any practicable pattern, for example: rectangle, diamond, triangle, circle, polygon, and other figures. Square is preferred because square is most space efficient and facilitates placement of devices thereon. The shape of the second sub-polyimide substrate 12 may be a straight line or a curved line.
In this embodiment, the third sub-polyimide substrate 13 has no conductive lines and devices thereon, and the shape of the third sub-polyimide substrate 13 may be any practicable pattern.
Fig. 2 is a schematic cross-sectional structure of an embodiment, and as shown in fig. 2, the stretchable display panel further includes an elastomer 50, where the elastomer 50 wraps the first sub-polyimide substrate 11, the second sub-polyimide substrate 12, the third sub-polyimide substrate 13, the first conductive line 21, and the first device 31, so as to protect the device from being damaged during stretching.
In this embodiment, by reserving the third polyimide substrate 13 in the middle of the device, the area of polyimide patterning can be reduced without reducing the tensile property of the device, so that the polyimide patterning time is shortened, the service life of the laser is prolonged, and the productivity is improved.
In some embodiments, the orthographic projection shape of the portion of the first conductive line 21 on the first sub-polyimide substrate 11 is a straight line, and the orthographic projection shape of the portion of the first conductive line 21 on the second sub-polyimide substrate 12 is a straight line or a curved line. Preferably, the front projection shape of the portion of the first conductive line 21 located on the second sub-polyimide substrate 12 is curved, more preferably S-shaped, so that it is ensured that the conductive line is not broken by deformation when the display panel is stretched.
In some embodiments, it is preferred that the orthographic projection of the first wire 21 on the polyimide substrate is located at the central region of the first sub-polyimide substrate 11 and the second sub-polyimide substrate 12, the width of the first wire 21 is less than or equal to the width of the first polyimide substrate 11 and the second sub-polyimide substrate 12, and the width of the first wire 21 is the length of d labeled in fig. 1. Thus, the minimum stress on the wire during stretching can be ensured, and the wire is not easy to break.
In some embodiments, the first sub-polyimide substrate 11, the second sub-polyimide substrate 12, the first devices 31, and the first wires 21 constitute a first device group.
In some embodiments, it is preferable that the first sub-polyimide substrate 11, the second sub-polyimide substrate 12, and the third sub-polyimide substrate 13 are disposed in the same layer, which may further simplify the manufacturing process.
In another embodiment, referring to fig. 3 and 4, fig. 3 is a schematic structural diagram of another embodiment of a stretchable display panel provided in the present application; fig. 4 is a schematic cross-sectional view of another embodiment of a stretchable display panel provided herein. As shown in fig. 3, the stretchable display panel further includes a second conductive line 22, a second device 32, and a fifth sub-polyimide substrate 15.
Fig. 4 is a schematic cross-sectional structure of another embodiment, and as shown in fig. 4, the stretchable display panel further includes a first intermediate layer 41, an elastomer 50, and a fourth sub-polyimide substrate 14. The fourth sub-polyimide substrate 14 is located on the third sub-polyimide substrate 13, the second device 32 and a portion of the second conductive line 22 are located on the fourth sub-polyimide substrate 14, and another portion of the second conductive line 22 is located on the fifth sub-polyimide substrate 15. The first intermediate layer 41 is located between the third sub-polyimide substrate 13 and the fourth sub-polyimide substrate 14. The third sub-polyimide substrate 13, the fourth sub-polyimide substrate 14, the fifth sub-polyimide substrate 15, the second wires 22, and the second devices 32 constitute a second device group.
Specifically, a portion of the second conductive line 22, the second device 32, and the second device 32 are disposed on the fourth sub-polyimide substrate 14, the second conductive line 22 is electrically connected to the second device 32, and the second devices 32 are electrically connected to each other through the second conductive line 22. A part of the second conductive line 22 is provided on the fifth sub-polyimide substrate 15, and the second conductive line 22 provided on the fourth sub-polyimide substrate 14 is connected to the second conductive line 22 of the two parts of the second conductive line 22 provided on the fifth sub-polyimide substrate 15.
Since the wire portions of the first device group and the second device group overlap, the overlapping areas are isolated by the first intermediate layer 41, and movement when the devices are stretched is not affected. The elastomer 50 wraps the first sub-polyimide substrate 11, the second sub-polyimide substrate 12, the third sub-polyimide substrate 13, the fourth sub-polyimide substrate 14, the fifth sub-polyimide substrate 15, the first conductive line 21, the second conductive line 22, the first device 31, the second device 32 and the first intermediate layer 41, which is advantageous in protecting the devices from being damaged when stretched.
The second device group is positioned in the gap of the first device group, the precision degree of the devices can be obviously improved, and the PPI can be obviously improved when the second device group is applied to display.
In some embodiments, the first intermediate layer 41 is an adhesive layer of an elastomeric material, preferably polydimethylsiloxane, as it facilitates adhesion to polyimide without affecting tensile properties as well as optical properties.
In some embodiments, it is preferable that the second conductive line 22 is located at a central region of the third sub-polyimide substrate 13, and the width 22 of the second conductive line is equal to or less than the width of the third sub-polyimide substrate 13. The definition of the width is shown in the above embodiment, and will not be described in detail herein. Therefore, the wire is ensured to be stressed least during stretching, and the wire is not easy to break.
In some embodiments, the orthographic projection shape of the portion of the second conductive line 22 located on the fourth sub-polyimide substrate 14 is a straight line.
In some embodiments, the orthographic projection shape of the portion of the second conductive line 22 located on the fifth sub-polyimide substrate 15 is a straight line or a curve, preferably a curve, so as to further buffer the tensile stress.
In some embodiments, the first sub-polyimide substrate 11 and the third sub-polyimide substrate 13 are preferably disposed in the same layer, and the fourth sub-polyimide substrate 14 and the fifth sub-polyimide substrate 15 are preferably disposed in the same layer, so that the fabrication process can be optimized.
In yet another embodiment, referring to fig. 5 and 6, fig. 5 is a schematic structural diagram of yet another embodiment of a stretchable display panel provided in the present application; fig. 6 is a schematic cross-sectional structure of still another embodiment of a stretchable display panel provided herein. As shown in fig. 6, the stretchable display panel provided herein further comprises a second intermediate layer 42 and a sixth sub-polyimide substrate 16.
In the present embodiment, the polyimide substrate of the most middle island shape in fig. 5 is the third sub-polyimide substrate 13, and the polyimide substrate of the bridge shape connected thereto is the fifth sub-polyimide substrate 15.
In the present embodiment, the second intermediate layer 42 is located between the third sub-polyimide substrate 13 and the fourth sub-polyimide substrate 14, and also between the first sub-polyimide substrate 11 and the sixth sub-polyimide substrate 16.
In the present embodiment, the orthographic projection shape of the portion of the second conductive line 22 on the fifth sub-polyimide substrate 15 is a straight line or a curved line, preferably a curved line, more specifically an S-shape, which can further prevent the breakage phenomenon occurring during the stretching process.
In this embodiment, the device orientations of the first device group and the second device group are opposite, and a second intermediate layer 42 is further provided between the first device group and the second device group, and the devices of the first device group and the second device group are located on the upper and lower sides of the second intermediate layer 42. With this arrangement, a two-sided display of the screen can be formed.
In the present embodiment, the elastic body 50 encapsulates the first sub-polyimide substrate 11, the second sub-polyimide substrate 12, the third sub-polyimide substrate 13, the fourth sub-polyimide substrate 14, the fifth sub-polyimide substrate 15, the sixth sub-polyimide substrate 16, the first conductive line 21, the second conductive line 22, the first device 31, the second device 32, and the second intermediate layer 42 all. The elastomer 50 provides an omnidirectional protection for the first member 31 and the second member 32, and the elastomer 50 between the two members serves as a connection and support.
In some embodiments, the second intermediate layer 42 is an adhesive layer of elastomeric material, preferably polydimethylsiloxane, as it facilitates adhesion to polyimide without affecting tensile properties as well as optical properties.
In some embodiments, the thickness of both the first intermediate layer 41 and the second intermediate layer 42 is less than 10 μm, which is less than the thickness of the elastomer 50, which is advantageous for making the stretchable display panel thin.
In some embodiments, the material of the elastomer 50 includes one or more of silicone rubber, urethanes, and acrylics, with silicone rubber being preferred because it facilitates film formation.
In some embodiments, the first sub-polyimide substrate 11 and the third sub-polyimide substrate 13 are preferably disposed in the same layer, and the fourth sub-polyimide substrate 14 and the sixth sub-polyimide substrate 16 are preferably disposed in the same layer, so that the fabrication process can be optimized.
The embodiment of the invention also provides a stretchable display device which can be any product or component with display function, such as an OLED display device, a Micro LED display device, an LED display device and a sensing device, a television, a digital camera, a mobile phone, a tablet personal computer, a smart watch, an electronic book, a navigator and the like, wherein the television comprises the OLED, the Micro LED and the LED display device.
The display device includes: the structure, function and implementation of the stretchable display panel in any of the foregoing embodiments may refer to the specific description in the foregoing embodiments, and will not be repeated here.
Fig. 7 is a flow chart of a method for manufacturing a stretchable display panel according to an exemplary embodiment of the present invention, as shown in fig. 7, the method for manufacturing a stretchable display panel provided in this embodiment includes:
step 101: a substrate is provided.
Specifically, it may be a glass substrate.
Step 102: the releasable substrate is coated.
Specifically, a releasable substrate, preferably a polyimide substrate, is coated, the polyimide substrate having a thickness of 5 to 30 μm. And coating a photoresist on the strippable substrate, and performing exposure development patterning on the photoresist.
Step 103: depositing metal.
Specifically, after depositing the metal layer, the photoresist is stripped and then the metal forms the conductive lines.
The metal may be deposited and then patterned, or a lift off process may be used.
The thickness of the metal layer is 100nm-2 μm.
An insulating layer can be formed over the metal to facilitate protection of the metal lines.
Step 104: the polyimide substrate is patterned.
Specifically, the polyimide substrate is patterned to form a plurality of first sub-polyimide substrates, a plurality of second sub-polyimide substrates and at least one third sub-polyimide substrate, and the patterning mode is laser processing.
Step 105: forming a device.
Specifically, a device may be manufactured in advance on the wire, and then the device is connected with the wire by means of welding, and the metal material used for welding may be tin, silver, indium, etc., or the device may be directly formed above the wire by other methods, which is not specifically limited herein;
the device may be an optoelectronic device or a sensing device.
Step 106: an elastomer is formed.
Specifically, an elastomer is formed over and under the device, the material of the elastomer including one or more of silicone rubber, polyurethane, and acrylic.
The thickness of the elastomer is 50-500 μm.
In the embodiment, the polyimide substrate is patterned in a laser mode, when the polyimide substrate is patterned, part of the polyimide substrate except the wire area and the integrated device area is reserved, and the polyimide patterning area is reduced under the condition that the stretching performance of the device is not reduced, so that the polyimide patterning time can be shortened, the service life of a laser is prolonged, and the productivity is improved.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.
Claims (11)
1. A stretchable display panel, the stretchable display panel comprising:
a polyimide substrate comprising a plurality of first sub-polyimide substrates, a plurality of second sub-polyimide substrates, and at least one third sub-polyimide substrate;
a first wire over the first sub-polyimide substrate and the second sub-polyimide substrate;
the first device is positioned above the first sub polyimide substrate, and the first wire is electrically connected with the first device;
the adjacent first sub polyimide substrates are connected through the second sub polyimide substrate, a closed area is formed, and the third sub polyimide substrate is located in the closed area;
the first sub polyimide substrate, the second sub polyimide substrate, the first device and the first wire form a first device group; the third sub-polyimide substrate is used to form a second device group.
2. The stretchable display panel of claim 1, wherein the stretchable panel comprises a stretchable layer,
the shape of orthographic projection of the first lead on the first sub polyimide substrate is a straight line;
the orthographic projection shape of the first lead on the second sub polyimide substrate is a straight line or a curve.
3. The stretchable display panel of claim 2, wherein the stretchable panel comprises a stretchable layer,
the orthographic projection of the first wire on the polyimide substrate is positioned in the central area of the first sub polyimide substrate and the second sub polyimide substrate, and the width of the first wire is smaller than or equal to the width of the second sub polyimide substrate.
4. A stretchable display panel according to any of the claims 1-3, wherein,
the second device group comprises the third sub polyimide substrate, a fourth sub polyimide substrate, a second device and a second wire;
the fourth sub-polyimide substrate is positioned on the third sub-polyimide substrate; the second device and the second wire are positioned on the fourth sub-polyimide substrate;
the second device groups are connected with each other through the second wires.
5. The stretchable display panel of claim 4, wherein the stretchable panel comprises a stretchable layer,
the second device group further includes a first intermediate layer; the first intermediate layer is positioned between the third sub-polyimide substrate and the fourth sub-polyimide substrate;
the first interlayer material comprises an elastic material.
6. The stretchable display panel of claim 5, wherein the stretchable panel comprises a stretchable layer,
the first interlayer material comprises polydimethylsiloxane, and the thickness of the first interlayer is less than 10 μm.
7. The stretchable display panel of claim 4, wherein the stretchable panel comprises a stretchable layer,
a second intermediate layer is included in the second device group and in the first device group; the second intermediate layer is positioned on one side, far away from devices, of the polyimide substrate in the first device group and the second device group;
the second device group and the first device group are respectively positioned on the upper side and the lower side of the second middle layer.
8. The stretchable display panel of claim 7, wherein the stretchable panel comprises a stretchable layer,
the second intermediate layer has a thickness of less than 10 μm.
9. The stretchable display panel of claim 8, wherein the stretchable panel comprises a stretchable layer,
the device further comprises an elastomer, wherein the elastomer covers the first device group and the second device group;
the material of the elastomer comprises one or more of silicone rubber, polyurethane and acrylic.
10. A stretchable display device is characterized in that,
the stretchable display device comprising the stretchable display panel of any of claims 1-9.
11. A method of manufacturing a stretchable display panel, the method comprising:
coating a polyimide substrate on a base plate;
depositing metal on the polyimide substrate, and patterning to form a wire;
patterning the polyimide substrate to form a plurality of first sub-polyimide substrates, a plurality of second sub-polyimide substrates and at least one third sub-polyimide substrate;
forming a device on the wire;
an elastomer is formed surrounding the device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910295496.2A CN111816675B (en) | 2019-04-12 | 2019-04-12 | Stretchable display panel, preparation method thereof and display device |
| PCT/CN2019/111748 WO2020206971A1 (en) | 2019-04-12 | 2019-10-17 | Stretchable display panel and fabricating method therefor, and display device |
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| CN201910295496.2A CN111816675B (en) | 2019-04-12 | 2019-04-12 | Stretchable display panel, preparation method thereof and display device |
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| US20230397479A1 (en) * | 2020-12-22 | 2023-12-07 | Boe Technology Group Co., Ltd. | Display substrate and display device |
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| CN104391394A (en) * | 2014-12-10 | 2015-03-04 | 京东方科技集团股份有限公司 | Display panel motherboard, display panel, display device and manufacturing method of display panel mother board |
| CN206757265U (en) * | 2017-05-12 | 2017-12-15 | 京东方科技集团股份有限公司 | A kind of substrate and display device |
| CN108933148A (en) * | 2018-07-31 | 2018-12-04 | 上海天马微电子有限公司 | Display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102253531B1 (en) * | 2014-07-25 | 2021-05-18 | 삼성디스플레이 주식회사 | Display device and method for manufacturing the same |
| KR102416112B1 (en) * | 2014-10-02 | 2022-07-04 | 삼성전자주식회사 | Stretchable/foldable optoelectronic device, method of manufacturing the same and apparatus including the optoelectronic device |
| KR102544985B1 (en) * | 2016-02-25 | 2023-06-20 | 삼성디스플레이 주식회사 | Stretchable display device |
| KR20180021306A (en) * | 2016-08-18 | 2018-03-02 | 삼성디스플레이 주식회사 | Display panel |
| KR20180046422A (en) * | 2016-10-27 | 2018-05-09 | 삼성디스플레이 주식회사 | Flexible display device and manufacturing method thereof |
| CN109189265B (en) * | 2018-08-28 | 2021-10-08 | 上海天马微电子有限公司 | Stretchable panel and flexible display device |
| CN109036145B (en) * | 2018-08-31 | 2020-12-29 | 上海天马微电子有限公司 | Stretchable display panel and flexible display device |
| CN109378332B (en) * | 2018-09-30 | 2021-01-26 | 昆山国显光电有限公司 | Flexible display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104391394A (en) * | 2014-12-10 | 2015-03-04 | 京东方科技集团股份有限公司 | Display panel motherboard, display panel, display device and manufacturing method of display panel mother board |
| CN206757265U (en) * | 2017-05-12 | 2017-12-15 | 京东方科技集团股份有限公司 | A kind of substrate and display device |
| CN108933148A (en) * | 2018-07-31 | 2018-12-04 | 上海天马微电子有限公司 | Display panel and display device |
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| CN111816675A (en) | 2020-10-23 |
| WO2020206971A1 (en) | 2020-10-15 |
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