CN111357111A - Flexible substrate and method for manufacturing same - Google Patents
Flexible substrate and method for manufacturing same Download PDFInfo
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- CN111357111A CN111357111A CN201780096982.0A CN201780096982A CN111357111A CN 111357111 A CN111357111 A CN 111357111A CN 201780096982 A CN201780096982 A CN 201780096982A CN 111357111 A CN111357111 A CN 111357111A
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- flexible substrate
- layer
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- support ribs
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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
Abstract
The invention discloses a flexible substrate and a manufacturing method thereof. The flexible substrate comprises a flexible substrate, a functional layer arranged on one side of the flexible substrate and a supporting layer arranged on one side, deviating from the functional layer, of the flexible substrate, wherein the supporting layer comprises a plurality of mutually independent supporting ribs arranged at intervals. According to the invention, the supporting function is realized by fixedly arranging the plurality of mutually independent supporting ribs which are arranged at intervals on the flexible substrate, so that the bending capability and the bending service life of the whole flexible substrate are improved, and the flexibility performance of the flexible substrate is improved.
Description
The invention belongs to the technical field of display, and relates to a flexible substrate and a manufacturing method thereof.
With the development of display technologies, display products are diversified and humanized, wherein flexible display is an important development direction at present.
At present, in the existing process of manufacturing a flexible substrate, a rigid substrate needs to be provided, a flexible substrate is fixedly arranged on the rigid substrate, and then a functional layer is formed on the flexible substrate, so that the flexible substrate is formed; the rigid substrate is then cut and removed. When the flexible substrate is separated from the rigid substrate, a support film is generally adhered to the flexible substrate, and the support film supports the flexible substrate to facilitate the transportation of the flexible substrate. However, in the prior art, the support film is attached to the flexible substrate by a full-face film-attaching method and remains in the final flexible substrate, so that the flexibility of the flexible substrate is reduced.
Therefore, it is necessary to provide a new flexible substrate to solve the above technical problems.
In the prior art, the support film is attached to the flexible substrate in a full-face film-attaching manner and is retained in the final flexible substrate, so that the flexibility of the flexible substrate is reduced.
In order to solve the above technical problems, the present invention provides a novel flexible substrate capable of improving flexibility and a method for manufacturing the same.
The invention provides a flexible substrate which comprises a flexible substrate, a functional layer arranged on one side of the flexible substrate and a support layer arranged on one side of the flexible substrate far away from the functional layer, wherein the support layer comprises a plurality of mutually independent support ribs arranged at intervals.
Preferably, the flexible substrate is bent to form a bending center line, and every two adjacent support ribs are symmetrically arranged about the bending center line.
Preferably, the distance of the interval between two adjacent support ribs is larger than the curvature radius of the flexible substrate when the flexible substrate is bent in the interval.
Preferably, the distance of separation is 1-4mm greater than the radius of curvature.
Preferably, the support ribs are fixed on the flexible substrate by coating or printing.
Preferably, the support rib is made of a thermosetting organic material or a photosensitive resin material.
Preferably, the flexible substrate further comprises a first protective layer removably attached to a side of the support layer remote from the flexible substrate.
The invention also provides a manufacturing method of the flexible substrate, which comprises the following steps:
s1, providing a flexible substrate, and forming a functional layer on one side of the flexible substrate;
s2, forming a supporting layer on one side of the flexible substrate far away from the functional layer; the supporting layer comprises a plurality of mutually independent supporting ribs arranged at intervals.
Preferably, the method further comprises S3, and a first removable protective layer is formed on one side of the support layer far away from the flexible substrate.
Preferably, the step S2 includes:
and forming the support ribs on the flexible substrate by coating or printing.
Preferably, the support rib is made of a thermosetting organic material or a photosensitive resin material.
The invention has the beneficial effects that: according to the invention, the supporting function is realized by fixedly arranging the plurality of mutually independent supporting ribs which are arranged at intervals on the flexible substrate, so that the bending capability and the bending service life of the whole flexible substrate are improved, and the flexibility performance of the flexible substrate is improved.
Fig. 1 is a schematic structural diagram of a flexible substrate provided by the present invention;
FIG. 2 is a schematic structural diagram showing a first bonding manner of the flexible substrate and the supporting layer in FIG. 1;
FIG. 3 is a schematic structural diagram showing a second bonding manner of the flexible substrate and the supporting layer in FIG. 1;
FIG. 4 is a schematic structural diagram illustrating a third bonding manner of the flexible substrate and the supporting layer in FIG. 1;
fig. 5 is a flowchart of a method for manufacturing a flexible substrate according to the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a flexible substrate 100, which includes a flexible substrate 101, a functional layer 102 disposed on one side of the flexible substrate 101, a support layer 103 disposed on one side of the flexible substrate 101 facing away from the functional layer 102, and a first protective layer 104 disposed on one side of the support layer 103 facing away from the flexible substrate 101. In this embodiment, the protection layer 104 may be specifically a protection film, which may be made of a high molecular material, for example, a plastic material such as polyethylene terephthalate, and which may be disposed on a side of the support layer 103 facing away from the flexible substrate 101 by means of gluing or the like. The first protective layer 104 is used to protect the flexible substrate 100 from deformation or damage during transportation, and after the transportation is completed, the first protective layer 104 can be removed from the side of the supporting layer 103 facing away from the flexible substrate 101, and is not present in the final flexible substrate product. It is understood that the first protective layer 104 may not be provided when the supporting layer 103 can perform a sufficient protection and supporting function.
Referring to fig. 1, in the present embodiment, the functional layer 102 includes a thin film crystal layer 1021, an OLED layer 1022, a thin film encapsulation layer 1023, and a second passivation layer 1024 sequentially stacked on the flexible substrate 101. The thin film crystal layer 1021 is a thin film transistor controlled by a switching circuit and a driving circuit, the OLED layer 1022 is for emitting light, and the thin film encapsulation layer 1023 and the second protective layer 1024 are for protecting the thin film crystal layer 1021 and the OLED layer 1022.
The flexible substrate 101 may be made of a flexible plastic material, or may be made of a metal material such as stainless steel. The flexible substrate 101 is preferably made of a plastic material having excellent heat resistance, such as polyvinyl ether phthalate, polyethylene naphthalene, polycarbonate, polyarylate, polyetherimide, polyethersulfone, polyimide, or the like.
The support layer 103 includes a plurality of support ribs 1031 that are independent and spaced apart from each other. The support ribs 1031 are preferably made of a thermosetting organic material or a photosensitive resin. The support layer 103 may be formed in a manner of: the support ribs 1031 are formed by applying a thermosetting organic material or a photosensitive resin or the like to the surface of the flexible substrate 101 on the side facing away from the functional layer 102, and then curing by heat curing or UV light irradiation. It is understood that the support ribs 1031 may also be formed on the surface of the flexible substrate 101 by ink-jet printing. The support ribs 1031 may be identical or different in shape. Preferably, in the present embodiment, each support rib 1031 has a rectangular block shape. Of course, in other embodiments, the support ribs 1031 may be square, elongated, etc. The width and thickness of the support ribs 1031 can be set according to actual requirements, and preferably, the thickness is set to 10-50 μm, and the width is set to 2-20 mm. In this embodiment, the supporting function is realized by fixedly arranging a plurality of mutually independent and spaced support ribs on the flexible substrate, so that the bending capability and the bending life of the whole flexible substrate 100 are improved, and the flexibility of the flexible substrate is improved. In other embodiments, the support layer 103 further includes a support film coated in the gap between the adjacent support ribs 1031, and the thickness of the support film is smaller than the thickness of the support ribs 1031, so as to protect the flexible substrate 100 from being scratched. The support membrane is made of the same material and process as the support ribs 1031.
Referring to fig. 2, the hollow arrows in fig. 2 indicate the bending direction of the flexible substrate 101. The support layer 103 includes two support ribs 1031 formed on the flexible substrate 101. The two support ribs 1031 form a space D therebetween. In this embodiment, the flexible substrate 101 is bent once, the bending point is located at an interval D, the bending point is bent to form a bending center line L, the two support ribs 1031 are symmetrically arranged about the bending center line L, and the distance of the interval D is greater than the radius of curvature of the flexible substrate 101 when being bent, and preferably, the distance of the interval D is greater than the radius of curvature of the flexible substrate 101 by 1-4 mm. The supporting function is realized by arranging the two mutually independent supporting ribs 1031 on the flexible substrate, and meanwhile, a gap exists between the two supporting ribs 1031, so that the bending capacity and the bending service life of the whole flexible substrate are improved, and the flexibility of the flexible substrate is improved.
Referring to fig. 3, the hollow arrows in fig. 3 indicate the bending direction of the flexible substrate 101. In the present embodiment, the support layer 103 includes three first, second and third support ribs 1031a, 1031b and 1031c formed on the flexible substrate 101 and spaced apart from each other. A first interval D1 is formed between the first support rib 1031a and the second support rib 1031b, and a second interval D2 is formed between the second support rib 1031b and the third support rib 1031 c. In this embodiment, the flexible substrate 101 is bent twice, and has two bending center lines L1 and L2 parallel to each other, and the bending points are located in the first interval D1 and the second interval D2, respectively. The first support rib 1031a and the second support rib 1031b are symmetrically arranged about the bending center line L1; the second support ribs 1031b and the third support ribs 1031c are symmetrically arranged with respect to the bending center line L2. The distance of the first interval D1 is greater than the radius of curvature of the flexible substrate 101 when bent within this first interval D1, preferably the distance of the first interval D1 is 1-4mm greater than the radius of curvature of the flexible substrate 101. Preferably, the distance of the second interval D2 is greater than the radius of curvature of the flexible substrate 101 when bent within the second interval D2, and preferably, the distance of the second interval D2 is 1-4mm greater than the radius of curvature of the flexible substrate 101.
Referring to fig. 4, the hollow arrows in fig. 4 indicate the bending direction of the flexible substrate 101. The support layer 103 includes a plurality of support ribs 1031 formed on the flexible substrate 101, wherein the support ribs 1031 are parallel to each other and spaced apart from each other, and a space D is formed between every two adjacent support ribs 1031, i.e., a plurality of spaces D are formed in the support layer 103. The flexible substrate 101 is bent for multiple times, and the multiple bending points are respectively and correspondingly distributed in the multiple intervals to form corresponding bending center lines. The support ribs 1031 on both sides of each interval D are symmetrically arranged with respect to their corresponding bending center lines. The distance of each interval D is greater than the radius of curvature of the flexible substrate 101 when it is bent within the interval D, and preferably, the distance of the interval D is 1-4mm greater than the radius of curvature of the flexible substrate 101.
It can be understood that the plurality of support ribs 1031 may not be parallel to each other, and since the plurality of support ribs 1031 are independent structures, the support ribs 1031 may be disposed at corresponding positions according to actual design requirements of the flexible substrate 100, and the plurality of support ribs 1031 are combined into different shapes and structures. For example, the support ribs 1031 may be disposed in a bezel region of the display panel, a display region or a non-display region of the display panel, and the like. Therefore, the flexibility of the flexible substrate application is improved, and the application range of the flexible substrate is expanded.
Referring to fig. 5, the present invention further provides a method for manufacturing a flexible substrate. The method specifically comprises the following steps:
s1, providing a flexible substrate 101, where the flexible substrate 101 may be made of a flexible plastic material or a metal material such as stainless steel. The flexible substrate 101 is preferably made of a plastic material having excellent heat resistance, such as polyvinyl ether phthalate, polyethylene naphthalene, polycarbonate, polyarylate, polyetherimide, polyethersulfone, polyimide, or the like. A functional layer 102 is formed on one side of the flexible substrate 101, and the functional layer 102 is used to realize a display function of the flexible substrate 100.
S2, forming a support layer 103 on a side of the flexible substrate 101 facing away from the functional layer 102, where the support layer 103 includes a plurality of independent and spaced support ribs 1031. The support ribs 1031 are preferably made of a thermosetting organic material or a photosensitive resin or the like, and specifically, are provided on the surface of the flexible substrate 101 by coating or printing. The flexible substrate is formed by adopting the coating or printing mode rather than the pasting mode, so that bubbles can be avoided.
S3, a first protective layer 104 is formed on the side of the support layer 103 facing away from the flexible substrate 101. The first protective layer 104 may specifically be a protective film, which is attached by gluing or the like on the side of the support layer 103 facing away from the flexible substrate 101. The first protective layer 104 is removable for protecting the flexible substrate 100 from deformation or damage during transportation, and the first protective layer 104 is removed after the transportation is completed and is not present in the final flexible substrate product. It is understood that the first protective layer 104 may not be provided when the supporting layer 103 can perform a sufficient protection and supporting function.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
- The flexible substrate is characterized by comprising a flexible substrate, a functional layer arranged on one side of the flexible substrate and a support layer arranged on one side, deviating from the functional layer, of the flexible substrate, wherein the support layer comprises a plurality of mutually independent support ribs arranged at intervals.
- The flexible substrate of claim 1, wherein the flexible substrate is bent to form a bending centerline, and each two adjacent support ribs are symmetrically arranged about the bending centerline.
- The flexible substrate of claim 2, wherein a distance of a space between two adjacent support ribs is greater than a radius of curvature of the flexible substrate when the flexible substrate is bent within the space.
- The flexible substrate of claim 3, wherein the spaced distance is 1-4mm greater than the radius of curvature.
- The flexible substrate of any one of claims 1-4, wherein the support ribs are coated or printed onto the flexible substrate.
- The flexible substrate of claim 5, wherein the support ribs are made of a thermosetting organic material or a photosensitive resin material.
- A flexible substrate according to any one of claims 1-4, further comprising a first protective layer removably attached to a side of the support layer facing away from the flexible substrate.
- A method for manufacturing a flexible substrate is characterized by comprising the following steps:s1, providing a flexible substrate, and forming a functional layer on one side of the flexible substrate;s2, forming a supporting layer on one side of the flexible substrate, which faces away from the functional layer; the supporting layer comprises a plurality of mutually independent supporting ribs arranged at intervals.
- The method of manufacturing a flexible substrate according to claim 8, further comprising:s3, forming a first removable protective layer on the side of the support layer facing away from the flexible substrate.
- The method for manufacturing a flexible substrate according to claim 8, wherein the step S2 includes:and forming the support ribs on the flexible substrate by coating or printing.
- The method of claim 10, wherein the support ribs are made of a thermosetting organic material or a photosensitive resin.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/114480 WO2019109216A1 (en) | 2017-12-04 | 2017-12-04 | Flexible base board and manufacturing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111357111A true CN111357111A (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780096982.0A Pending CN111357111A (en) | 2017-12-04 | 2017-12-04 | Flexible substrate and method for manufacturing same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111357111A (en) |
| WO (1) | WO2019109216A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880846A (en) * | 2015-06-15 | 2015-09-02 | 京东方科技集团股份有限公司 | Flexible substrate, production method thereof and display device |
| CN104885140A (en) * | 2012-12-28 | 2015-09-02 | 乐金显示有限公司 | Flexible display device and method of manufacturing the same |
| CN105118844A (en) * | 2015-07-01 | 2015-12-02 | 深圳市华星光电技术有限公司 | Manufacturing method for flexible display panel and flexible display panel |
| CN107195795A (en) * | 2017-06-07 | 2017-09-22 | 武汉天马微电子有限公司 | Foldable display panel and foldable display device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318861B (en) * | 2014-09-24 | 2017-05-10 | 京东方科技集团股份有限公司 | Flexible screen, bending identification method of flexible screen, and flexible display device |
| CN104393014B (en) * | 2014-10-22 | 2017-09-26 | 京东方科技集团股份有限公司 | A kind of array base palte and preparation method thereof, flexible display panels and display device |
| KR102361711B1 (en) * | 2015-02-02 | 2022-02-11 | 삼성디스플레이 주식회사 | Organic light emitting display device and method of manufacturing thereof |
| CN106526931A (en) * | 2016-11-04 | 2017-03-22 | 武汉华星光电技术有限公司 | Array substrate, liquid crystal display panel and preparation method of liquid crystal display panel |
-
2017
- 2017-12-04 WO PCT/CN2017/114480 patent/WO2019109216A1/en active Application Filing
- 2017-12-04 CN CN201780096982.0A patent/CN111357111A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104885140A (en) * | 2012-12-28 | 2015-09-02 | 乐金显示有限公司 | Flexible display device and method of manufacturing the same |
| CN104880846A (en) * | 2015-06-15 | 2015-09-02 | 京东方科技集团股份有限公司 | Flexible substrate, production method thereof and display device |
| CN105118844A (en) * | 2015-07-01 | 2015-12-02 | 深圳市华星光电技术有限公司 | Manufacturing method for flexible display panel and flexible display panel |
| CN107195795A (en) * | 2017-06-07 | 2017-09-22 | 武汉天马微电子有限公司 | Foldable display panel and foldable display device |
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| Publication number | Publication date |
|---|---|
| WO2019109216A1 (en) | 2019-06-13 |
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Application publication date: 20200630 |