CN113193144A - Elastic film, flexible display panel and manufacturing method thereof - Google Patents
Elastic film, flexible display panel and manufacturing method thereof Download PDFInfo
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- CN113193144A CN113193144A CN202110439141.3A CN202110439141A CN113193144A CN 113193144 A CN113193144 A CN 113193144A CN 202110439141 A CN202110439141 A CN 202110439141A CN 113193144 A CN113193144 A CN 113193144A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000012528 membrane Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000010410 layer Substances 0.000 claims description 79
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 30
- 230000001681 protective effect Effects 0.000 claims description 17
- 229920001721 polyimide Polymers 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000009719 polyimide resin Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 13
- 239000008187 granular material Substances 0.000 abstract description 12
- 238000001125 extrusion Methods 0.000 abstract description 9
- 206010027146 Melanoderma Diseases 0.000 abstract description 6
- 230000000994 depressogenic effect Effects 0.000 abstract description 6
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 239000004642 Polyimide Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- H10K50/844—Encapsulations
-
- 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
-
- 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
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application provides an elastic film, a flexible display panel and a manufacturing method thereof. This application has set up the elastic membrane and has seted up a plurality of depressed places at the bottom surface of this elastic membrane at the bottom surface of flexible support membrane. When the flexible display panel of this application adds man-hour on the processing procedure platform under vacuum environment, if there is great granule in processing procedure platform surface, then this large granule can produce the extrusion to the elastic membrane, at this moment, the deformation can take place for the depressed part of elastic membrane, in order to offset the extrusion of large granule to it, thereby do not transmit deformation to the flexible support membrane of locating its top, make flexible support membrane can keep leveling when carrying out processing procedure man-hour, can not appear because produced protruding by great granule jack-up, thereby avoid producing the bad phenomenon of black spot, this luminous efficacy and yields that are favorable to improving flexible display panel.
Description
Technical Field
The invention belongs to the technical field of display panels, and particularly relates to an elastic film, a flexible display panel and a manufacturing method of the flexible display panel.
Background
Organic Light Emitting Diode (OLED) display technology is widely used. In the process of producing the flexible OLED, a laser lift-off (LLO) technique is often used to peel off the flexible display panel and the glass substrate. As shown in fig. 1, the flexible display panel generally includes a POL protection film 1, an OLED display film 2, a PI flexible support film 3, and a BP protection film 4 after being peeled off from a glass substrate. The PI flexible support film 3 is used to enable the OLED display film 2 to be flexibly folded to different degrees during use. The BP protection film 4 is mainly used for buffering and/or protecting the stress of the PI flexible support film 3 to prevent the PI flexible support film 3 from being damaged to generate a black spot defect (Dark spot).
As shown in fig. 2, the BP protective film 4 generally used includes a weak pressure-sensitive adhesive layer 5, a weak adhesive protective film 6. The weak pressure-sensitive adhesive layer 5 is attached to the PI flexible support film 3 so as to buffer and protect the PI flexible support film 3. However, since the flexible display panel still needs to be subjected to a plurality of processes to obtain a final product, although the weak pressure-sensitive adhesive layer 5 can buffer the micro stress generated in the subsequent process to protect the PI flexible support film 3, the subsequent process is performed in a vacuum environment, and under the action of vacuum adsorption, the deformation amount of the weak pressure-sensitive adhesive layer 5 and the weak adhesive protective film 6 is smaller than that in a normal pressure environment, and the buffer absorption of an external force is small. At this time, as shown in fig. 3, if the large particles 8 exist on the surface of the process platform 7, the BP protective film 4 may push up the weakly adhesive protective film 6 placed on the process platform and form the first protrusions 9 on the weakly adhesive protective film 6. Since the amount of deformation of the weak pressure-sensitive adhesive layer 5 is reduced in a vacuum environment during the manufacturing process, the first protrusions 9 transfer the deformation to the weak pressure-sensitive adhesive layer 5, and the second protrusions 10 are formed on the weak pressure-sensitive adhesive layer 5. The second protrusion 10 further jacks up the PI flexible support film 3, so that the PI flexible support film 3 is damaged during the manufacturing process, thereby causing the above-mentioned black spot defect.
Disclosure of Invention
An object of the present application is to provide an elastic film, a flexible display panel and a method of manufacturing the same. In this application, a plurality of depressed parts have been seted up to the bottom surface of the elastic membrane that this display panel adopted, and this depressed part can respond and further offset the deformation extrusion to protect flexible support membrane, avoid flexible support membrane to lay and produce the bad phenomenon of black spot because the unevenness in the processing procedure.
In order to achieve the above objects, the present application provides an elastic film, a flexible display panel, and a method of manufacturing the same.
The present application provides an elastic film comprising: the top layer and the bottom layer that is laminated with this top layer. The top layer is used for being attached to the lower surface of the flexible support film of the flexible display panel. The top surface of the bottom layer is attached to the lower surface of the top layer, and a plurality of concave parts are arranged on the bottom surface of the top layer.
In some embodiments of the present application, the thickness of the elastic membrane may be any thickness without affecting its tackiness and luminescence.
In some embodiments of the present application, the thickness of the top layer may be generally 0.109 ± 0.01 mm. The thickness is generally dependent on the product structure and may vary depending on the size of the product. The thickness of the bottom layer may be 0.09 ± 0.01mm, all within the material tolerances.
In some embodiments of the present application, the recess may be a groove, and the shape of the groove may be any shape. However, in other embodiments of the present application, the shape of the recess may not be limited to the groove, as long as the function of "resisting the extrusion deformation of the large particles to the functional film layer in the manufacturing process" is achieved. In the slotted design of the present application, the slot pitch size is related to the total area of the elastic film layer, and may be any value and the shape profile of the slot may be any value under the background that the total area of the elastic film layer does not affect the weak adhesiveness and the overall flatness of the protective film. The number of the grooves may be arbitrary as long as the adhesiveness and function of the protective film are not affected.
In some embodiments of the present application, the depth H of the depression (or groove) is equal to the height H × 90% × (0.5-1.0) of the elastic film (or pressure sensitive adhesive layer), and the coefficient in parentheses may also be 0.6, 0.7, 0.8, or 0.9, etc.; alternatively, the width W of the depression (or groove) may be equal to the width W × 110% × (0.5 to 0.9) of the elastic film (or pressure-sensitive adhesive layer), and the coefficient in parentheses may be 0.6, 0.7, 0.8, or the like. And x represents a multiplication number.
In some embodiments of the present application, the plurality of grooves may be arranged in parallel or in a cross arrangement on the bottom surface. Illustratively, the depth of the groove may be any depth as long as it can play a role in resisting deformation. The groove can be partially recessed in the substrate or can extend through the substrate. The cross section of the groove can be any one or more of a semicircle, a trapezoid and a parallelogram. However, in other embodiments of the present application, the cross-section of the groove may not be limited to the above shape, as long as it can play a role of "resisting the extrusion deformation of large particles to each functional film layer in the process". When the cross section of the groove is trapezoid or parallelogram, the cross sections of two adjacent grooves can be axisymmetric or centrosymmetric.
In some embodiments of the present application, the elastic film may be a pressure sensitive adhesive layer. The parameters of the pressure sensitive adhesive layer may be: the depth H of the depression (or groove) is equal to the height H multiplied by 90% × (0.5-1.0) of the pressure-sensitive adhesive layer, and the width W of the depression (or groove) is equal to the width W multiplied by 110% × (0.5-0.9) of the pressure-sensitive adhesive layer. The numerical range of 0.5 to 1.0 represents any one of values in the range of 0.5 to 1.0. And x represents a multiplication number. The pressure-sensitive adhesive can be a solid adhesive layer as long as the adhesiveness of the pressure-sensitive adhesive is not influenced, the product process is satisfied, and no special viscosity specification exists. The pressure-sensitive adhesive layer can be acrylic acid, silica gel or rubber.
The application provides a flexible display panel includes: a display light emitting layer, a flexible support film, an elastic film, and an adhesive protective film. Wherein the display light emitting layer may be made of an organic light emitting diode material (OLED). The flexible supporting film is attached to the bottom surface of the display light emitting layer and used for supporting the display light emitting layer, and the material of the flexible supporting film may be Polyimide (PI). The elastic membrane is attached to the bottom surface of the flexible support membrane, and plays a role in stress buffering so as to maintain the flatness of the flexible support membrane in different manufacturing processes. The elastic film may be the elastic film described above. The adhesive protective film is attached to the bottom surface of the elastic film to protect the elastic film from being scratched by a sharp object. The material of the adhesive protective film can be an antistatic PU film layer, so that the surface of a product can be protected from being scratched and the capacitance can be damaged by electrostatic interference.
The manufacturing method of the flexible display panel comprises the following steps:
(1) preparing an elastic film, and attaching an adhesive protective film to the lower surface of the elastic film to obtain a support substrate;
(2) forming a display light-emitting layer on the upper surface of the flexible support film, and attaching the elastic film of the support substrate to the lower surface of the flexible support film to obtain a flexible display panel;
among them, the method of forming the depressions on the lower surface of the elastic film is not particularly limited as long as the desired depressions can be produced.
Due to the adoption of the technical scheme, the application has the following technical effects:
the elastic membrane of the application has elasticity and is provided with a plurality of depressed parts on the bottom surface. When the flexible display panel of this application adds man-hour on the processing procedure platform under vacuum environment, if there is great granule in processing procedure platform surface, then this large granule can produce the extrusion to the viscidity protection film, the viscidity protection film can transmit deformation to the elastic membrane of locating its top, at this moment, the deformation can take place for the depressed part of elastic membrane, in order to offset the extrusion effect of large granule to it, thereby not transmit deformation to the flexible support membrane of locating its top, make the flexible support membrane can keep leveling when carrying out processing procedure processing, can not appear because produced protruding by great granule jack-up, thereby avoid because protruding and the bad phenomenon of black spot that causes, this luminous efficacy who is favorable to increasing flexible display panel and improves its yields.
Drawings
Fig. 1 is a schematic structural diagram of a flexible display panel in the prior art.
Fig. 2 is a schematic structural diagram of a BP protection film in a flexible display panel of the prior art.
Fig. 3 is a schematic diagram of damage caused by a flexible support film of a flexible display panel of the related art.
Fig. 4 is a schematic cross-sectional structure view of an elastic membrane according to a first embodiment of the present application.
Fig. 5 is a schematic bottom structure view of an elastic film according to a first embodiment of the present application.
Fig. 6 is a schematic view of the arrangement of the grooves of the elastic membrane according to the second embodiment of the present application.
Fig. 7 is a schematic view of the arrangement of the grooves of the elastic membrane according to the third embodiment of the present application.
Fig. 8 is a schematic view showing the arrangement of the first groove of the elastic membrane according to the fourth embodiment of the present application.
Fig. 9 is a schematic view of a second groove arrangement of an elastic membrane according to a fourth embodiment of the present application.
Fig. 10 is a schematic view of a first groove arrangement of an elastic membrane according to a fifth embodiment of the present application.
Fig. 11 is a schematic view of a second groove arrangement of an elastic membrane according to a fifth embodiment of the present application.
Fig. 12 is a schematic structural diagram of a flexible display panel according to a sixth embodiment of the present application.
Reference numerals:
Detailed Description
The technology of the present application is described in detail below with reference to specific embodiments. It should be understood that the following detailed description is only for assisting those skilled in the art in understanding the present application, and is not intended to limit the present application. The following description and/or the annexed drawings set forth in detail certain illustrative embodiments and/or implementations of the application. It will be clear to a person skilled in the art that other embodiments or figures can also be derived from the following description and/or the figures without inventive effort. It should be noted that the filled color blocks in the drawings only play a distinguishing role and do not represent actual structures. Filling the same color blocks in different figures does not represent belonging to the same layer.
Example one
The present embodiment provides an elastic membrane. As shown in fig. 4 and 5, the elastic membrane of the present embodiment includes: a top layer 11 and a bottom layer 12. Wherein the top layer 11 is intended to be attached to a flexible support film of a flexible display panel. The bottom layer 12 has a top surface attached to the top layer 11 and a bottom surface defining a plurality of grooves 13. The cross-section of the groove 13 is rectangular.
The thickness of the elastic film in this embodiment can be any thickness without affecting its adhesiveness and luminescence, the thickness of the top layer being 0.109 + -0.01 mm (generally depending on the product structure, which may vary according to the size of the product), the thickness of the bottom layer being 0.09 + -0.01 mm (material tolerance), the depth of the grooves being 0.5mm, and the pitch of the grooves being 0.5 mm. However, in other embodiments, the elastic film is not limited to the above size according to the size of the flexible display panel, but is flexibly adjusted according to the size of the flexible display panel.
The grooves 13 in this embodiment are arranged in parallel and the length of each groove 13 is equal to the length of the bottom layer 12. However, in other embodiments, the length of each groove may be less than the length of the bottom layer.
The grooves 13 in this embodiment are all equal in length, however, in other embodiments, the length of each groove may be different.
The elastic membrane in this embodiment is provided with a plurality of grooves 13 on the bottom surface. However, the elastic film may be provided on the bottom surface thereof without being limited to the provision of the groove 13, as long as it has a recess which is limited in the bottom surface and can be deformed. These depressions include grooves, dimples, cavities, counterbores, threaded holes, and the like.
The elastic film in this embodiment is a pressure sensitive adhesive layer. The pressure-sensitive adhesive is a solid adhesive layer (as long as the adhesiveness of the pressure-sensitive adhesive is not influenced, the product process is satisfied, and no special viscosity specification exists). The pressure-sensitive adhesive layer can be any one of three types of pressure-sensitive adhesives of acrylic acid, silica gel and rubber.
Example two
As shown in fig. 6, the present embodiment provides an elastic membrane. Compared with the elastic film of the first embodiment, the grooves 14 of the elastic film of the first embodiment are arranged crosswise at an angle. The rest of the elastic membrane of this embodiment is the same as the structure of the first embodiment.
EXAMPLE III
As shown in fig. 7, the present embodiment provides an elastic membrane. In the elastic membrane of the present embodiment, the cross section of the groove 15 is semicircular as compared with the elastic membrane of the first embodiment. The radius of the semicircle is 0.3mm, however, in other embodiments, the elastic film is not limited to the above size according to the size of the flexible display panel, but is flexibly adjusted according to the size of the flexible display panel.
Example four
As shown in fig. 8, the present embodiment provides an elastic membrane. Compared with the elastic film of the first embodiment, the elastic film of the first embodiment has a trapezoidal cross section, and the cross sections of two adjacent grooves (such as the groove 16 and the groove 17) are axisymmetric, and the symmetry axis is shown by a dotted line in the figure. However, in other embodiments, as shown in fig. 9, the cross-section of two adjacent grooves (e.g., groove 18 and groove 19) may be symmetrical about the center, as shown at point 20.
The size of the upper bottom surface of the trapezoid in the embodiment is 0.5mm, the size of the lower bottom surface is 0.3-0.6 mm, and the height is 0.5 mm. However, in other embodiments, the elastic film is not limited to the above size according to the size of the flexible display panel, but is flexibly adjusted according to the size of the flexible display panel.
EXAMPLE five
As shown in fig. 10, the present embodiment provides an elastic film. Compared with the elastic film of the first embodiment, the elastic film of the first embodiment has a parallelogram-shaped cross section of each groove, and the cross sections of two adjacent grooves (such as the groove 21 and the groove 22) are axisymmetric, and the symmetry axis is shown by a dotted line in the figure. However, in other embodiments, as shown in FIG. 11, the cross-section of two adjacent grooves (e.g., groove 23 and groove 24) is centrosymmetric, and the center of symmetry is shown as point 25.
The side lengths of the parallelograms in this example are 0.3mm and 0.3 mm. However, in other embodiments, the elastic film is not limited to the above size according to the size of the flexible display panel, but is flexibly adjusted according to the size of the flexible display panel.
EXAMPLE six
The present embodiment provides a flexible display panel. As shown in fig. 12, the flexible display panel of the present embodiment includes: a display light-emitting layer 26, a flexible support film 27, an elastic film 28, and an adhesive protective film 31.
The display light-emitting layer 26 is an organic light-emitting diode (OLED).
The flexible support film 27 is attached to the bottom surface of the display light emitting layer 26 for supporting the display light emitting layer 26. The material of the flexible supporting film 27 is polyimide resin (PI)
The elastic membrane 28 is attached to the bottom surface of the flexible support membrane 27. The elastic film 28 includes a top layer 29 and a bottom layer 30. The top layer 29 is not recessed and the bottom layer 30 is recessed 32. The elastic film was the elastic film of example 1.
The adhesive protection film 31 is attached to the bottom surface of the elastic film 28 to protect the elastic film 28 from being scratched by an external force.
The flexible display panel of this embodiment adds man-hour on the processing procedure platform under vacuum environment, if there is great granule in processing procedure platform surface, this large granule can produce the extrusion to viscidity protection film 31, viscidity protection film 31 can transmit deformation to the elastic membrane 28 of locating its top, at this moment, the recess 32 of elastic membrane 28 can take place deformation, in order to offset the extrusion of large granule to it, thereby do not transmit deformation to the flexible support membrane 27 of locating its top, make flexible support membrane 27 can keep leveling when carrying out processing procedure processing, can not appear because being produced the arch by great granule jack-up, thereby avoid the production of the bad phenomenon of black spot because the arch leads to, this is favorable to increasing flexible display panel's luminous efficacy and improving its yields.
EXAMPLE seven
The present embodiment provides a method for manufacturing a flexible display panel, which is used to manufacture the flexible display panel of the sixth embodiment. The manufacturing method of the flexible display panel of the embodiment includes the following steps:
(1) preparing an elastic film, and attaching an adhesive protective film to the lower surface of the elastic film to obtain a support substrate;
(2) and forming a display light emitting layer on the upper surface of the flexible support film, and attaching the elastic film of the support substrate to the lower surface of the flexible support film to obtain the flexible display panel.
Although the application has been shown and described with respect to one or more embodiments, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. This application is intended to embrace all such modifications and variations and is limited only by the scope of the appended claims. In addition, while a particular feature of the subject application may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for any given or particular application. Furthermore, to the extent that the terms "includes," has, "" contains, "or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term" comprising.
In summary, although the present application has been disclosed in the embodiments, the serial numbers such as "first" and "second" in the embodiments are used for descriptive convenience only, and do not limit the sequence of the embodiments of the present application. Furthermore, the above-mentioned embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, therefore, the scope of the present application shall be defined by the appended claims.
Claims (11)
1. An elastic film, comprising:
a top layer attached to the flexible support film of the flexible display panel;
the top surface of the bottom layer is attached to the top layer, and a plurality of concave parts are arranged on the bottom surface of the bottom layer.
2. The elastic film of claim 1, wherein the top layer has a thickness of 0.109 ± 0.01 mm; and/or the thickness of the bottom layer is 0.09 +/-0.01 mm.
3. The elastic film according to claim 1, wherein the depressions are grooves, and a plurality of the grooves are arranged in parallel or in a cross arrangement on the bottom surface.
4. The elastic film of claim 3, wherein the groove portion is recessed in the base layer or the depth of the groove penetrates the base layer.
5. The elastic membrane according to claim 3, wherein the cross section of the groove is any one or more of a semicircle, a trapezoid and a parallelogram.
6. The elastic film according to claim 5, wherein when the cross section of the groove is trapezoidal or parallelogram, the cross section of two adjacent grooves is axisymmetric or centrosymmetric.
7. The elastic film according to any one of claims 1 to 6, wherein said elastic film is a pressure sensitive adhesive layer.
8. The elastic film according to claim 7, wherein the depth H of the depression is H x 90% × (0.5-1.0) of the height of the pressure-sensitive adhesive layer; and/or the width W of the depression is equal to the width W of the pressure-sensitive adhesive layer multiplied by 110% × (0.5-0.9); and/or the pressure-sensitive adhesive layer is a solid adhesive layer; and/or the pressure-sensitive adhesive layer is selected from acrylic pressure-sensitive adhesive, silica gel pressure-sensitive adhesive or rubber pressure-sensitive adhesive.
9. A flexible display panel, comprising:
a display light emitting layer;
the flexible supporting film is attached to the bottom surface of the luminous layer and supports the display luminous layer;
the elastic film is attached to the bottom surface of the flexible support film; and an adhesive protective film attached to the bottom surface of the elastic film; wherein the elastic film is the elastic film according to any one of claims 1 to 8.
10. The flexible display panel according to claim 9, wherein the material of the display light emitting layer is an organic light emitting diode; and/or the flexible support film is made of polyimide resin; and/or the adhesive protective film is made of an antistatic PU film layer.
11. A method for manufacturing a flexible display panel, comprising the steps of:
preparing an elastic film, and attaching an adhesive protective film to the lower surface of the elastic film to obtain a support substrate;
forming a display light-emitting layer on the upper surface of the flexible support film, and attaching the elastic film of the support substrate to the lower surface of the flexible support film to obtain a flexible display panel;
wherein the elastic film is the elastic film according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110439141.3A CN113193144A (en) | 2021-04-23 | 2021-04-23 | Elastic film, flexible display panel and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110439141.3A CN113193144A (en) | 2021-04-23 | 2021-04-23 | Elastic film, flexible display panel and manufacturing method thereof |
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| CN113193144A true CN113193144A (en) | 2021-07-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113968377A (en) * | 2021-12-07 | 2022-01-25 | Tcl华星光电技术有限公司 | Film pasting device and film pasting method |
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| CN104183615A (en) * | 2013-05-24 | 2014-12-03 | 三星显示有限公司 | Adhesive film and organic light emitting display using the same |
| US20150212547A1 (en) * | 2014-01-28 | 2015-07-30 | Samsung Display Co., Ltd. | Flexible display device |
| CN108062913A (en) * | 2016-11-07 | 2018-05-22 | 三星显示有限公司 | rollable display device |
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2021
- 2021-04-23 CN CN202110439141.3A patent/CN113193144A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183615A (en) * | 2013-05-24 | 2014-12-03 | 三星显示有限公司 | Adhesive film and organic light emitting display using the same |
| US20150212547A1 (en) * | 2014-01-28 | 2015-07-30 | Samsung Display Co., Ltd. | Flexible display device |
| CN108062913A (en) * | 2016-11-07 | 2018-05-22 | 三星显示有限公司 | rollable display device |
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| CN113968377A (en) * | 2021-12-07 | 2022-01-25 | Tcl华星光电技术有限公司 | Film pasting device and film pasting method |
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