CN110807990A - Bending-resistant cover window and preparation method thereof - Google Patents
Bending-resistant cover window and preparation method thereof Download PDFInfo
- Publication number
- CN110807990A CN110807990A CN201910973218.8A CN201910973218A CN110807990A CN 110807990 A CN110807990 A CN 110807990A CN 201910973218 A CN201910973218 A CN 201910973218A CN 110807990 A CN110807990 A CN 110807990A
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- Prior art keywords
- coating layer
- hard coating
- cover window
- soft
- resistant cover
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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
- G09F9/301—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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- 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
Abstract
The invention provides a bending-resistant cover window and a preparation method thereof, wherein the bending-resistant cover window comprises: a hard coating layer provided with a plurality of through holes; and a soft coating layer filled in the through hole of the hard coating layer and integrated with the hard coating layer; wherein the hardness of the hard coating layer is greater than that of the soft coating layer, and the March hardness of the hard coating layer is greater than 350N/mm2。
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of display panel manufacturing, in particular to a bending-resistant cover window and a preparation method thereof.
[ background of the invention ]
With the development of new era, high performance electronic products are new, flexible and bendable consumer electronic products have attracted the investment and development of various factories, and in order to achieve a dynamically bendable (foldable) Organic Light Emitting Diode (OLED) product, new materials, new designs and new process technologies must be introduced to improve the performance of the flexible and bendable OLED product. In terms of materials, the biggest challenge is to attach a cover window (cover window) material to the outermost surface of a display screen instead of a glass cover plate (cover glass) in a hard screen, and a plastic material or ultra-thin glass is usually adopted, and the material needs to have good bending resistance, scratch resistance and high surface hardness. The plastic cover window material commonly used in the industry at present adopts transparent Polyimide (PI) as a base material, a hard coating is coated on the surface to improve the surface hardness, the hard coating is generally an inorganic-organic composite material, and the conditions such as cracking and the like are very easy to occur in the bending process, particularly in the outward bending process, so that the cover window is failed.
[ summary of the invention ]
The invention aims to provide a bending-resistant cover window and a preparation method thereof, and aims to solve the problem that the cover window is broken to cause the cover window to lose efficacy in the bending process in the prior art.
In order to solve the above problems, the present invention provides a bending-resistant cover window, including: a hard coating layer provided with a plurality of through holes; and a soft coating layer filled in the through hole of the hard coating layer and integrated with the hard coating layer; wherein the hardness of the hard coating layer is greater than that of the soft coating layer, and the March hardness of the hard coating layer is greater than 350N/mm2。
Furthermore, the integral Martensitic hardness of the window of the bending-resistant cover is 350N/mm2The thickness of the soft coating layer is 10-200 microns, and the thickness of the hard coating layer is larger than or equal to that of the soft coating layer.
Further, the shape of the hard coating layer includes at least one of a rectangular parallelepiped, a cylinder, and a stage.
Furthermore, the material of the soft coating layer comprises at least one of transparent polyurethane, epoxy resin and acrylate.
Furthermore, the hard coating layer is made of at least one of transparent silanes, polyurethanes, epoxy resins and acrylates.
The invention provides a preparation method of a bending-resistant cover window, which comprises the following steps: step 1: coating a hard coating material on a base material, carrying out partial curing, washing an uncured area by a developing process to form a hard coating layer, wherein the hard coating layer is provided with a plurality of through holes; step 2: coating a soft coating material between the hard coating layers, and curing to form a soft coating layer, wherein the soft coating layer is filled in the through hole of the hard coating layer and integrated with the hard coating layer to form a bending-resistant cover window; and step 3: peeling the bending-resistant cover window from the base material to obtain the base-material-free bending-resistant cover windowBending the cover window; wherein the hard coating layer has a Martensitic hardness of more than 350N/mm2。
Furthermore, the integral Martensitic hardness of the window of the bending-resistant cover is 350N/mm2The thickness of the soft coating layer is 10-200 microns, and the thickness of the hard coating layer is larger than or equal to that of the soft coating layer.
Further, the shape of the hard coating layer includes at least one of a rectangular parallelepiped, a cylinder, and a stage.
Furthermore, the material of the soft coating layer comprises at least one of transparent polyurethane, epoxy resin and acrylate.
Furthermore, the hard coating layer is made of at least one of transparent silanes, polyurethanes, epoxy resins and acrylates.
The invention has the beneficial effects that the cover window without the base material is provided, the continuous soft material provides good bending performance and is embedded in the hard material, so that the cover window has certain hardness, and the breakage of the cover window in the bending process is avoided.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used 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 invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a cover window in an embodiment of the present invention;
FIG. 2 is a top view of a cover window in an embodiment of the present invention;
FIG. 3 is a top view of a cover window in another embodiment of the present invention;
FIG. 4 is a top view of a cover window in another embodiment of the present invention;
FIG. 5 is a schematic view of a method for manufacturing a cover window according to another embodiment of the present invention.
[ detailed description ] embodiments
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings for illustrating the invention and enabling those skilled in the art to fully describe the technical contents of the present invention so that the technical contents of the present invention can be more clearly and easily understood. The present invention may, however, be embodied in many different forms of embodiments and the scope of the present invention should not be construed as limited to the embodiments set forth herein.
It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so described are interchangeable under appropriate circumstances. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Embodiments of the present invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a bending-resistant cover window 1, including: a hard coating layer 20 provided with a plurality of through holes; and a soft coating layer 10 filled in the hard coatingIn the through hole of the coating layer 20 and integrated with the hard coating layer 20; wherein the hard coating layer 20 has a hardness greater than that of the soft coating layer 10, and the hard coating layer 20 has a Martensitic hardness greater than 350N/mm2。
In one embodiment of the present invention, the bending-resistant cover window 1 has an overall Ma hardness of 350N/mm2Wherein, the thickness of the soft coating layer 10 is 10-200 microns, and the thickness of the hard coating layer 20 is greater than or equal to the thickness of the soft coating layer 10.
As shown in fig. 2, 3 and 4, in an embodiment of the present invention, the hard coating layer 20 may be a rectangular parallelepiped, but in another embodiment of the present invention, the hard coating layer 20 may also be at least one of a cylinder such as a cylinder, a prism, and/or a truncated cone such as a truncated cone, a truncated pyramid, and the hard coating layer 20 may have a regular pattern or an irregular pattern for supporting the cover window.
In an embodiment of the present invention, the material of the soft coating layer may be transparent polyurethane, but in another embodiment of the present invention, the material of the soft coating layer may also be at least one of polyurethane, epoxy resin, and acrylate.
In one embodiment of the present invention, the material of the hard coating layer includes transparent silanes, however, in another embodiment of the present invention, the material of the hard coating layer may be at least one of silanes, polyurethanes, epoxies, and acrylates.
The above-described manner in which the soft coating layer 10 is combined with the hard coating layer 20 not only ensures the bending property but also provides a certain hardness to the cover window.
In another embodiment of the present invention, as shown in fig. 5, there is provided a method for preparing a bending-resistant cover window, including: s1, step 1: coating a hard coating material on a base material, carrying out partial curing, washing an uncured area by a developing process to form a hard coating layer, wherein the hard coating layer is provided with a plurality of through holes; s2, step 2: coating soft coating material between the hard coating layers, curing to form a soft coating layer, filling the soft coating layer in the through hole of the hard coating layer and integrating the soft coating layer and the hard coating layer into a whole to form the bending-resistant coverA window; and S3, step 3: peeling the bending-resistant cover window from the base material to obtain the bending-resistant cover window without the base material; wherein the hard coating layer has a Martensitic hardness of more than 350N/mm2。
In an embodiment of the present invention, the soft coating material is applied to the entire surface of the substrate, is continuous, and is integrated with the hard coating layer, except for a partial region coated with the hard coating layer.
In an embodiment of the invention, the substrate may be glass or PET.
In an embodiment of the present invention, the method of peeling the bendable cover window from the substrate may employ a laser peeling method. In another embodiment, however, mechanical stripping may be used. If desired, the substrate may be pre-coated with a release agent during manufacture to allow for complete release of the lid window.
In one embodiment of the invention, the bending-resistant cover window has an overall Ma hardness of 350N/mm2And the thickness of the soft coating layer is 10-200 microns, and the thickness of the hard coating layer is larger than or equal to that of the soft coating layer.
In an embodiment of the present invention, the hard coating layer may be in a shape of a rectangular parallelepiped, but in another embodiment of the present invention, the hard coating layer may also be at least one of a cylinder such as a cylinder, a prism, and/or a truncated cone such as a truncated cone, and the like, and the hard coating layer may have a regular pattern or an irregular pattern for supporting the cover window.
In an embodiment of the present invention, the material of the soft coating layer may be transparent polyurethane, but in another embodiment of the present invention, the material of the soft coating layer may also be at least one of polyurethane, epoxy resin, and acrylate.
In one embodiment of the present invention, the material of the hard coating layer includes transparent silanes, however, in another embodiment of the present invention, the material of the hard coating layer may be at least one of silanes, polyurethanes, epoxies, and acrylates.
The invention has the beneficial effects that the cover window without the base material is provided, the continuous soft material provides good bending performance and is embedded in the hard material, so that the cover window has certain hardness, and the breakage of the cover window in the bending process is avoided.
The bending-resistant cover window and the preparation method thereof provided by the embodiment of the invention are described in detail above. It should be understood that the exemplary embodiments described herein should be considered merely illustrative for facilitating understanding of the method of the present invention and its core ideas, and not restrictive. Descriptions of features or aspects in each exemplary embodiment should generally be considered as applicable to similar features or aspects in other exemplary embodiments. While the present invention has been described with reference to exemplary embodiments, various changes and modifications may be suggested to one skilled in the art. It is intended that the present invention encompass such changes and modifications as fall within the scope of the appended claims.
While the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the present invention, and modifications such as replacement of structural elements and the like may be made by those skilled in the art within the scope of the present invention.
Claims (10)
1. A buckle resistant cover window, comprising:
a hard coating layer provided with a plurality of through holes; and
the soft coating layer is filled in the through hole of the hard coating layer and is integrated with the hard coating layer;
wherein the hardness of the hard coating layer is greater than that of the soft coating layer, and the March hardness of the hard coating layer is greater than 350N/mm2。
2. The buckle resistant cover window of claim 1 having an overall mahalanobis hardness of 350N/mm2The thickness of the soft coating layer is 10-200 microns, and the thickness of the hard coating layer is larger than or equal to that of the soft coating layer.
3. The kink-resistant cover window of claim 1 wherein the shape of the hard coating layer comprises at least one of a cuboid, a cylinder, a frustum.
4. The kink-resistant cover window of claim 1 wherein the material of the soft coating layer comprises at least one of transparent polyurethanes, epoxies, acrylates.
5. The kink-resistant cover window of claim 1 wherein the material of the hard coating layer comprises at least one of transparent silanes, polyurethanes, epoxies, acrylates.
6. A preparation method of a bending-resistant cover window is characterized by comprising the following steps:
step 1: coating a hard coating material on a base material, carrying out partial curing, washing an uncured area by a developing process to form a hard coating layer, wherein the hard coating layer is provided with a plurality of through holes;
step 2: coating a soft coating material between the hard coating layers, and curing to form a soft coating layer, wherein the soft coating layer is filled in the through hole of the hard coating layer and integrated with the hard coating layer to form a bending-resistant cover window; and
and step 3: peeling the bending-resistant cover window from the base material to obtain the bending-resistant cover window without the base material;
wherein the hard coating layer has a Martensitic hardness of more than 350N/mm2。
7. The method of claim 6, wherein the mohs hardness of the kink-resistant cap window is 350N/mm2The thickness of the soft coating layer is 10-200 microns, and the thickness of the hard coating layer is larger than or equal to that of the soft coating layer.
8. The production method according to claim 6, wherein the shape of the hard coating layer includes at least one of a rectangular parallelepiped, a cylinder, and a stage.
9. The method according to claim 6, wherein the material of the soft coating layer comprises at least one of transparent polyurethanes, epoxy resins and acrylates.
10. The method according to claim 6, wherein the hard coating layer is made of at least one of transparent silanes, polyurethanes, epoxies, and acrylates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910973218.8A CN110807990A (en) | 2019-10-14 | 2019-10-14 | Bending-resistant cover window and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910973218.8A CN110807990A (en) | 2019-10-14 | 2019-10-14 | Bending-resistant cover window and preparation method thereof |
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| Publication Number | Publication Date |
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| CN110807990A true CN110807990A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910973218.8A Pending CN110807990A (en) | 2019-10-14 | 2019-10-14 | Bending-resistant cover window and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113362708A (en) * | 2020-03-05 | 2021-09-07 | Uti有限公司 | Flexible cover window and method for manufacturing flexible cover window |
| CN113496653A (en) * | 2020-04-02 | 2021-10-12 | Uti有限公司 | Flexible cover window and method for manufacturing flexible cover window |
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Cited By (3)
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|---|---|---|---|---|
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| CN113496653A (en) * | 2020-04-02 | 2021-10-12 | Uti有限公司 | Flexible cover window and method for manufacturing flexible cover window |
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Application publication date: 20200218 |
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