WO2019242426A1 - 盖板及其制备方法、显示面板、显示装置 - Google Patents

盖板及其制备方法、显示面板、显示装置 Download PDF

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Publication number
WO2019242426A1
WO2019242426A1 PCT/CN2019/086519 CN2019086519W WO2019242426A1 WO 2019242426 A1 WO2019242426 A1 WO 2019242426A1 CN 2019086519 W CN2019086519 W CN 2019086519W WO 2019242426 A1 WO2019242426 A1 WO 2019242426A1
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Prior art keywords
layer
ink
hardened
rigid
cover plate
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PCT/CN2019/086519
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English (en)
French (fr)
Inventor
李建伟
时永祥
蔡宝鸣
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京东方科技集团股份有限公司
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Priority to US16/621,132 priority Critical patent/US11402879B2/en
Publication of WO2019242426A1 publication Critical patent/WO2019242426A1/zh

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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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/181—Enclosures
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
    • C08J2333/12—Homopolymers or copolymers of methyl methacrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2383/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a cover plate, a method for manufacturing the same, a display panel, and a display device.
  • An embodiment of the present disclosure provides a cover plate including a bent region and a non-bent region.
  • the cover plate includes a base material layer and a hardening layer attached to the base material layer, wherein the hardening layer includes a first hardening layer portion located in the bending region, and the first hardening layer portion includes a flexible hardening A mixture of materials and rigid hardened materials.
  • the first hardened layer portion includes a plurality of flexible hardened material layers and a plurality of rigid hardened material layers, the plurality of flexible hardened material layers and the plurality of rigid hardened material layers along the base.
  • the interface between the material layer and the hardened layer is alternately arranged on the substrate layer.
  • the hardened layer further includes a second hardened layer portion located in the non-bent region, the second hardened layer portion being formed of a rigid hardened material.
  • the pencil hardness of the flexible hardened material layer is greater than 7H
  • the pencil hardness of the rigid hardened material layer is greater than 7H and not greater than 9H.
  • each of the flexible hardened material layer and the rigid hardened material layer includes a composite formed of a siloxane polymer material and a resin material.
  • the cover plate further includes an ink blocking layer attached to the hardened layer, the ink blocking layer including a first ink layer portion located in the bending region, the first ink layer Part includes a mixture of flexible ink materials and rigid ink materials.
  • the first ink layer portion includes a plurality of flexible ink material layers and a plurality of rigid ink material layers, the plurality of flexible ink material layers and the plurality of rigid ink material layers are along the ink.
  • the interface between the shielding layer and the hardened layer is alternately arranged on the hardened layer.
  • the plurality of flexible ink material layers in the ink blocking layer are respectively related to the hardening
  • the plurality of flexible hardening material layers in the layer are aligned, and the plurality of rigid ink material layers in the ink shielding layer are respectively aligned with the plurality of rigid hardening material layers in the hardening layer.
  • the ink blocking layer further includes a second ink layer portion located in the non-bent region, and the second ink layer portion is formed of a rigid ink material.
  • an elastic modulus of the flexible ink material layer is 6GPa-7GPa
  • an elastic modulus of the rigid ink material layer is 40GPa-60GPa.
  • the cover plate includes a display area, and the ink blocking layer is disposed at a periphery of the display area.
  • Another embodiment of the present disclosure provides a display panel including a cover plate according to any one of the foregoing embodiments.
  • Another embodiment of the present disclosure provides a display device including the display panel according to the above embodiment.
  • Another embodiment of the present disclosure provides a method for preparing a cover plate, including: providing a substrate layer, the substrate layer including a bent region and a non-bent region; and forming a hardened layer on the substrate layer, wherein The hardened layer includes a first hardened layer portion located in the bending region, and the first hardened layer portion includes a mixture of a flexible hardened material and a rigid hardened material.
  • the hardened layer is formed on the substrate layer by an evaporation process
  • the preparation method includes: using a first mask plate in a bending region and a non-bending region of the substrate layer.
  • a rigid hardened material is vapor-deposited on the folding area, and the rigid hardened material on the non-bent area of the base material layer forms a second hardened layer portion of the hardened layer;
  • a flexible hardened material is vapor-deposited on the fold, and the patterns of the first mask plate and the second mask plate are complementary.
  • the manufacturing method further includes: forming an ink blocking layer on the hardened layer, the ink blocking layer including a first ink layer portion on the first hardened layer portion, the first ink
  • the layer portion includes a mixture of a flexible ink material and a rigid ink material.
  • the ink blocking layer includes a second ink layer portion located on the second hardened layer portion, wherein forming the ink blocking layer includes: using a first silk screen screen on the first A rigid ink material is printed on the hardened layer portion and the second hardened layer portion; a second screen printing screen is used to print a flexible ink material on the first hardened layer portion, wherein the first screen printing screen and the first The patterns of the two screen printing screens are complementary.
  • FIG. 1 is a schematic partial plan view of a cover plate provided by an embodiment of the present disclosure
  • FIG. 2 is a cross-sectional view of the cover plate shown in FIG. 1 taken along line A-A;
  • FIG. 3 is a schematic partial cross-sectional view of a cover plate according to another embodiment of the present disclosure.
  • FIG. 4 is a top view of a cover plate provided according to another embodiment of the present disclosure.
  • FIG. 5 is a flowchart of a method for manufacturing a cover plate according to another embodiment of the present disclosure.
  • An embodiment of the present disclosure provides a cover plate that can be applied to a flexible display device.
  • the cover plate has a bending area and a non-bending area
  • the cover plate includes: a base material layer and a hardening layer attached to the base material layer
  • the hardening layer includes a first hardening located in the bending area A layer portion, the first hardened layer portion comprising a mixture of a flexible hardened material and a rigid hardened material.
  • FIG. 1 schematically shows a top view of a cover plate according to an embodiment of the present disclosure
  • FIG. 2 shows a cross-sectional view of the cover plate obtained by line A-A in FIG. 1.
  • the cover plate has a bending area C and a non-bending area P.
  • the cover plate includes a base material layer 1 and a hardening layer 2 attached to the base material layer 1.
  • the first hardened layer portion 20 of the zone C includes a mixture of a flexible hardened material and a rigid hardened material.
  • the "bend area” mentioned in this article refers to the area where the cover is suitable for bending, not a certain area of the surface cover is always in a bent state, and the "non-bend area” refers to the normal An area in a bent state.
  • the cover plate provided by the embodiment of the present disclosure can be applied to a flexible display device. Since the first hardened layer portion in the bending area includes a mixture of a flexible hardening material and a rigid hardening material, the flexibility of the bending area of the cover plate is improved.
  • the cover plate is beneficial to prevent the cover plate from breaking under the condition of a small bending radius, and improve the bending reliability of the cover plate and the flexible display device, so that the cover plate is flexed dynamically or after a long period of static bending. Easier to return to a flat state.
  • the rigid hardened material in the first hardened layer portion in the bending area makes the hardness of the cover plate not be greatly reduced, and realizes the protection function of the cover plate.
  • FIG. 3 schematically illustrates a partial cross-sectional view of a cover plate according to another embodiment of the present disclosure.
  • the first hardened layer portion 20 of the hardened layer 2 of the cover plate includes a plurality of flexible hardened material layers. 202 and a plurality of rigid hardening material layers 201, the plurality of flexible hardening material layers and the plurality of rigid hardening material layers are alternately arranged on the base material layer 1 along the interface between the base material layer 1 and the hardening layer 2.
  • the hardening layers 2 are arranged on the upper and lower surfaces of the base material layer 1, which is more conducive to improving the strength and flexibility of the cover plate. As shown in FIG. 2 or FIG.
  • the hardened layer 2 further includes a second hardened layer portion 21 located in the non-bent area P of the cover plate, and the second hardened layer portion 21 is formed of a rigid hardened material. Therefore, it is possible to ensure that the overall cover plate has strong rigidity, and plays a role of protecting the display device to which the cover plate is applied.
  • the substrate layer 1 is a flexible transparent substrate layer 1, which may be formed of a flexible transparent material such as PMMA, PET, PI, PC, and the like.
  • the present disclosure does not specifically limit the flexible hardened material and the rigid hardened material.
  • the flexible hardened material layer 202 and the rigid hardened material layer 201 each include a composite formed of a siloxane polymer material and a resin material.
  • the flexible hardened material layer 202 and the rigid hardened material layer 201 having different hardnesses can be respectively formed by adjusting the ratio of the siloxane polymer material and the resin material in the composite.
  • the pencil hardness of the flexible hardened material layer 202 may be no more than 7H, and the pencil hardness of the rigid hardened material layer 201 may be more than 7H and no more than 9H.
  • the thickness of the hardened layer 2 may be 8-15 ⁇ m, for example, may be 10 ⁇ m.
  • the cover plate further includes an ink blocking layer attached to the hardened layer, and the ink blocking layer includes a first ink layer portion located in the bending region.
  • the first ink layer portion includes a mixture of a flexible ink material and a rigid ink material.
  • FIG. 3 schematically shows the ink blocking layer 3 and the first ink layer portion 30 of the ink blocking layer 3.
  • the first ink layer portion 30 in the ink shielding layer 3 includes a flexible ink material, which can correspond to and cooperate with the first hardened layer portion in the hardened layer to improve the flexibility and bending performance of the cover plate.
  • the first ink layer portion of the ink blocking layer of the cover plate includes a plurality of flexible ink material layers 302 and a plurality of rigid ink material layers 301, and a plurality of flexible ink material layers. 302 and a plurality of rigid ink material layers 301 are alternately arranged on the hardening layer 2 along the interface between the ink blocking layer 3 and the hardening layer 2.
  • the ink blocking layer 3 further includes a second ink layer portion 31 located in the non-bent region, and the second ink layer portion 31 is formed of a rigid ink material.
  • the pencil hardness of the flexible ink material layer 302 may not be greater than 7H, and the pencil hardness of the rigid ink material layer 301 may be greater than 7H and not greater than 9H.
  • the elastic modulus of the flexible ink material layer 302 is 6GPa-7GPa
  • the elastic modulus of the rigid ink material layer 301 is 40GPa-60GPa.
  • the thickness of the ink blocking layer 3 is 12 ⁇ m to 16 ⁇ m.
  • the ink shielding layer mentioned in the embodiments of the present disclosure may be arranged outside the display area of the flexible display device.
  • the transparent substrate layer 1 includes a display area 10; an ink shielding layer 3 is arranged around the display area 10, and is used to block the wiring and the like outside the display area 10.
  • another embodiment of the present disclosure provides a method for preparing a cover plate, as shown in FIG. 5, the method includes the following steps: S101, providing a substrate layer, the substrate The layer includes a bending area and a non-bending area; S102, forming a hardened layer on a substrate layer, wherein the hardened layer includes a first hardened layer portion located in the bent area, and the first hardened layer portion includes flexibility A mixture of hardened and rigid hardened materials.
  • a hardening layer may be formed on the substrate layer by using an evaporation process, and the preparation method includes: using a first mask plate to vaporize the bent region and the non-bent region of the substrate layer. Plate a rigid hardened material, the rigid hardened material on the non-bent area of the base material layer forms a second hardened layer portion of the hardened layer; and use a second mask plate to steam on the bent area of the base material layer A flexible hardening material is plated, and the patterns of the first mask plate and the second mask plate are complementary.
  • a hardened layer 2 having a flexible hardened material layer 202 and a rigid hardened material layer 201 as shown in FIG. 3 can be obtained.
  • a method for preparing a cover plate further includes: forming an ink blocking layer on the hardened layer, the ink blocking layer including a first ink layer portion on the first hardened layer portion
  • the first ink layer portion includes a mixture of a flexible ink material and a rigid ink material.
  • the ink blocking layer includes a second ink layer portion located on the second hardened layer portion.
  • forming the ink blocking layer includes: A rigid ink material is printed on the first hardened layer portion and the second hardened layer portion; a flexible ink material is printed on the first hardened layer portion by using a second screen printing screen plate, wherein the first screen printing screen plate and The pattern of the second screen printing screen is complementary.
  • the rigid ink material and the flexible ink material may be made by baking and thermal curing. Curing.
  • a display panel including a cover plate in any of the above embodiments The display panel is a flexible display panel, and may be, for example, a flexible OLED display panel.
  • an embodiment of the present disclosure also provides a display device including the display panel in the above embodiments.
  • the display device is a flexible display device, and may be, for example, a flexible OLED display device.

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Abstract

一种盖板及其制备方法、显示面板、显示装置。盖板具有弯折区（C）和非弯折区(P)，盖板包括：基材层(1)和附接于基材层(1)的硬化层(2)，硬化层(2)包括位于弯折区(C)的第一硬化层部分（20），第一硬化层部分（20）包括柔性硬化材料和刚性硬化材料的混合物。

Description

盖板及其制备方法、显示面板、显示装置
相关申请的交叉引用
本申请要求于2018年6月22日向中国专利局提交的专利申请201810652333.0的优先权利益，并且在此通过引用的方式将该在先申请的内容并入本文。
技术领域
本公开涉及显示技术领域，特别涉及一种盖板及其制备方法、显示面板、显示装置。
背景技术
柔性显示产品已经被开发出来并得到人们的关注，但是，目前的柔性显示设备仍存在柔性度不够高的问题。例如，在柔性显示设备以较小的弯曲半径(例如，小于3mm)弯折时，柔性显示设备的弯折区域容易发生断裂，这极大的影响了柔性显示产品的外观及可靠性。另外，当前的柔性显示产品在动态弯折或者较长时间的静态弯折后难以恢复至平整状态，同样极大的影响了柔性显示产品的使用舒适性以及可靠性。
发明内容
本公开的实施例提供了一种盖板，其包括弯折区和非弯折区。该盖板包括：基材层和附接于所述基材层的硬化层，其中所述硬化层包括位于所述弯折区的第一硬化层部分，所述第一硬化层部分包括柔性硬化材料和刚性硬化材料的混合物。
根据本公开的一些实施例，所述第一硬化层部分包括多个柔性硬化材料层和多个刚性硬化材料层，所述多个柔性硬化材料层和多个刚性硬化材料层沿着所述基材层和所述硬化层的交界面交替地布置在所述基材层上。
根据本公开的一些实施例，所述硬化层还包括位于所述非弯折区的第二硬化层部分，所述第二硬化层部分由刚性硬化材料形成。
根据本公开的一些实施例，柔性硬化材料层的铅笔硬度大于7H，所述刚性硬化材料层的铅笔硬度大于7H且不大于9H。
根据本公开的一些实施例，柔性硬化材料层和所述刚性硬化材料层均包括由硅氧烷高分子材料和树脂材料形成的复合物。
根据本公开的一些实施例，盖板还包括附接于所述硬化层的油墨遮挡层，所述油墨遮挡层包括位于所述弯折区内的第一油墨层部分，所述第一油墨层部分包括柔性油墨材料和刚性油墨材料的混合物。
根据本公开的一些实施例，所述第一油墨层部分包括多个柔性油墨材料层和多个刚性油墨材料层，所述多个柔性油墨材料层和多个刚性油墨材料层沿着所述油墨遮挡层和所述硬化层的交界面交替地布置在所述硬化层上。
根据本公开的一些实施例，在垂直于所述油墨遮挡层和所述硬化层的交界面的竖直方向上，所述油墨遮挡层中的所述多个柔性油墨材料层分别与所述硬化层中的所述多个柔性硬化材料层对齐，所述油墨遮挡层中的所述多个刚性油墨材料层分别与所述硬化层中的所述多个刚性硬化材料层对齐。
根据本公开的一些实施例，所述油墨遮挡层还包括位于所述非弯折区的第二油墨层部分，所述第二油墨层部分由刚性油墨材料形成。
根据本公开的一些实施例，所述柔性油墨材料层的弹性模量为6GPa-7GPa，所述刚性油墨材料层的弹性模量为40GPa-60GPa。
根据本公开的一些实施例，盖板包括显示区域，所述油墨遮挡层布置在所述显示区域的外围。
本公开的另一实施例提供了一种显示面板，包括如前述的任一实施例所述的盖板。
本公开的另一实施例提供了一种显示装置，包括如上述实施例所述的显示面板。
本公开的另外的实施例提供了一种盖板的制备方法，包括：提供基材层，所述基材层包括弯折区和非弯折区；以及在基材层上形成硬化层，其中所述硬化层包括位于所述弯折区的第一硬化层部分，所述第一硬化层部分包括柔性硬化材料和刚性硬化材料的混合物。
根据本公开的一些实施例，通过蒸镀工艺在所述基材层上形成所述硬化层，所述制备方法包括：利用第一掩膜板在所述基材层的弯折区和非弯折区上蒸镀刚性硬化材料，所述基材层的非弯折区上的刚性硬化材料形成所述硬化层的第二硬化层部分；利用第二掩膜板在所述 基材层的弯折区上蒸镀柔性硬化材料，所述第一掩膜板和所述第二掩膜板的图案互补。
根据本公开的一些实施例制备方法还包括：在所述硬化层上形成油墨遮挡层，所述油墨遮挡层包括位于所述第一硬化层部分上的第一油墨层部分，所述第一油墨层部分包括柔性油墨材料和刚性油墨材料的混合物。
根据本公开的一些实施例，所述油墨遮挡层包括位于所述第二硬化层部分上的第二油墨层部分，其中形成所述油墨遮挡层包括：采用第一丝印网版在所述第一硬化层部分上和所述第二硬化层部分上打印刚性油墨材料；采用第二丝印网版在所述第一硬化层部分上打印柔性油墨材料，其中所述第一丝印网版和所述第二丝印网版的图案互补。
附图说明
图1为本公开的一个实施例提供的盖板的示意性局部俯视图；
图2为图1所示的盖板沿着线A-A得到的截面图；
图3为本公开的另一实施例提供的盖板的局部截面示意图；
图4为根据本公开的另一实施例提供的盖板的俯视图；
图5为本公开的又一实施例提供的盖板的制备方法流程图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本公开的实施例提供了一种盖板，其可应用于柔性显示设备。盖板具有弯折区和非弯折区，所述盖板包括：基材层和附接于所述基材层上的硬化层，所述硬化层包括位于所述弯折区的第一硬化层部分，所述第一硬化层部分包括柔性硬化材料和刚性硬化材料的混合物。图1示意性地示出了根据本公开实施例的盖板的俯视图，图2示出了图1中的线A-A得到的盖板的截面图。如图1和图2所示，盖板具有弯折区C和非弯折区P，盖板包括基材层1和附接于基材层1的硬化层2， 硬化层2包括位于弯折区C的第一硬化层部分20，第一硬化层部分20包括柔性硬化材料和刚性硬化材料的混合物。
本文提到的“弯折区”指的是盖板适于弯曲的区域，而不是表面盖板的的某一区域一直处于弯折状态，“非弯折区”指的是在通常情况下不处于弯曲状态的区域。本公开实施例提供的盖板可应用于柔性显示设备，由于处于弯折区的第一硬化层部分包括柔性硬化材料和刚性硬化材料的混合物，所以使得盖板的弯折区域的柔性度得到提升，从而有利于防止盖板在较小的弯曲半径的情况下发生断裂现象，提高盖板以及柔性显示设备的弯折可靠性，使得该盖板在动态弯折或者较长时间的静态弯折后更容易地恢复至平坦状态。同时，处于弯折区的第一硬化层部分中的刚性硬化材料使得盖板的硬度不会大幅降低，实现盖板的保护功能。
图3示意性地示出了根据本公开的另一实施例提供的盖板局部截面图，如图3所示，盖板的硬化层2的第一硬化层部分20包括多个柔性硬化材料层202和多个刚性硬化材料层201，所述多个柔性硬化材料层和多个刚性硬化材料层沿着基材层1和硬化层2的交界面交替地布置在基材层1上。在图3的示例中，基材层1的上下两个表面均布置了硬化层2，这样，更有利于提升盖板的强度和柔性。如图2或图3所示，根据本公开的实施例，硬化层2还包括位于盖板的非弯折区P的第二硬化层部分21，第二硬化层部分21由刚性硬化材料形成，由此，可以保证整体的盖板具有较强的坚固性，起到对应用该盖板的显示设备的保护作用。根据本公开的一些实施例，基材层1为柔性透明基材层1，其可以由PMMA、PET、PI、PC等柔性透明材料形成。
本公开不对柔性硬化材料和刚性硬化材料作特别的限制，根据本公开的一些实施例，柔性硬化材料层202和刚性硬化材料层201均包括由硅氧烷高分子材料和树脂材料形成的复合物。在该情形中，可以通过调整复合物中的硅氧烷高分子材料和树脂材料的比例以分别形成硬度不同的柔性硬化材料层202和刚性硬化材料层201。
根据本公开的一些实施例，柔性硬化材料层202的铅笔硬度可以不大于7H，刚性硬化材料层201的铅笔硬度可以大于7H且不大于9H。
根据本公开的一些实施例，硬化层2的厚度可以为8-15μm，例如可以为10μm。
根据本公开的另外的实施例，除了上述的基材层和硬化层之外，盖板还包括附接于硬化层的油墨遮挡层，油墨遮挡层包括位于弯折区内的第一油墨层部分，所述第一油墨层部分包括柔性油墨材料和刚性油墨材料的混合物。图3示意性地示出了油墨遮挡层3和油墨遮挡层3的第一油墨层部分30。油墨遮挡层3中的第一油墨层部分30包括柔性油墨材料，其可与硬化层中的第一硬化层部分相对应和配合，提升盖板的柔性度和弯折性能。
根据本公开的另外的实施例，如图3所示，盖板的油墨遮挡层的第一油墨层部分包括多个柔性油墨材料层302和多个刚性油墨材料层301，多个柔性油墨材料层302和多个刚性油墨材料层301沿着油墨遮挡层3和硬化层2的交界面交替地布置在硬化层2上。
进一步地，根据本公开的实施例，在垂直于油墨遮挡层3和硬化层2的交界面的竖直方向上，油墨遮挡层中的所述多个柔性油墨材料层302分别与硬化层中的多个柔性硬化材料层202对齐，油墨遮挡层中的多个刚性油墨材料层301分别与硬化层中的所述多个刚性硬化材料层201对齐。由此，可以有利于硬化层2和油墨遮挡层3的刚度变化的一致性，有利于提升整个盖板的柔性度和弯曲性能。在图3的示例中，油墨遮挡层3还包括位于非弯折区的第二油墨层部分31，第二油墨层部分31由刚性油墨材料形成。
根据本公开的一些实施例，柔性油墨材料层302的铅笔硬度可以不大于7H，刚性油墨材料层301的铅笔硬度可以大于7H且不大于9H。
进一步地，在一些实施例中，柔性油墨材料层302的弹性模量为6GPa-7GPa，刚性油墨材料层301的弹性模量为40GPa-60GPa。
在一些实施例中，油墨遮挡层3的厚度为12μm～16μm。
对于本公开实施例中提懂啊的油墨遮挡层，其可以布置于柔性显示设备的显示区之外。如图4所示，，透明基材层1包括显示区10；油墨遮挡层3环绕该显示区10设置，用于遮挡显示区10外的走线等结构。
基于本公开实施例提供的盖板，本公开的另一实施例提供了一种盖板的制备方法，如图5所示，该方法包括以下步骤：S101，提供基材层，所述基材层包括弯折区和非弯折区；S102，在基材层上形成硬化层，其中所述硬化层包括位于所述弯折区的第一硬化层部分，所述 第一硬化层部分包括柔性硬化材料和刚性硬化材料的混合物。
根据本公开的实施例，可以采用蒸镀工艺在基材层上形成硬化层，所述制备方法包括：利用第一掩膜板在所述基材层的弯折区和非弯折区上蒸镀刚性硬化材料，所述基材层的非弯折区上的刚性硬化材料形成所述硬化层的第二硬化层部分；利用第二掩膜板在所述基材层的弯折区上蒸镀柔性硬化材料，所述第一掩膜板和所述第二掩膜板的图案互补。由此，可制得如图3所示的具有柔性硬化材料层202和刚性硬化材料层201的硬化层2。
进一步，根据本公开的一些实施例，盖板的制备方法还包括：在所述硬化层上形成油墨遮挡层，所述油墨遮挡层包括位于所述第一硬化层部分上的第一油墨层部分，所述第一油墨层部分包括柔性油墨材料和刚性油墨材料的混合物。
根据本公开的一些实施例，所述油墨遮挡层包括位于所述第二硬化层部分上的第二油墨层部分，此时，形成所述油墨遮挡层包括：采用第一丝印网版在所述第一硬化层部分上和所述第二硬化层部分上打印刚性油墨材料；采用第二丝印网版在所述第一硬化层部分上打印柔性油墨材料，其中所述第一丝印网版和所述第二丝印网版的图案互补。利用这些工艺步骤，可以制得如图3所示的具有柔性油墨材料层302和刚性油墨材料层301的硬化层3。
根据本公开的实施例，在采用第一丝印网版打印刚性油墨材料后，以及在采用第二丝印网版打印柔性油墨材料后，可通过烘烤热固化的方式使得刚性油墨材料和柔性油墨材料固化。本公开的另外的实施例还提供了一种显示面板，包括上述任一实施例中的盖板。上述显示面板为柔性显示面板，例如可以为柔性OLED显示面板。
另外，本公开实施例还提供了一种显示装置，包括上述实施例中的显示面板。上述显示装置为柔性显示装置，例如可以为柔性OLED显示装置。
显然，本领域的技术人员可以对本公开实施例进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本文所附权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (17)

  1. 一种盖板，包括弯折区和非弯折区，其中所述盖板包括：
    基材层和附接于所述基材层的硬化层，其中所述硬化层包括位于所述弯折区的第一硬化层部分，所述第一硬化层部分包括柔性硬化材料和刚性硬化材料的混合物。
  2. 根据权利要求1所述的盖板，其中所述第一硬化层部分包括多个柔性硬化材料层和多个刚性硬化材料层，所述多个柔性硬化材料层和多个刚性硬化材料层沿着所述基材层和所述硬化层的交界面交替地布置在所述基材层上。
  3. 根据权利要求2所述的盖板，其中所述硬化层还包括位于所述非弯折区的第二硬化层部分，所述第二硬化层部分由刚性硬化材料形成。
  4. 根据权利要求2-3中任一项所述的盖板，其中所述柔性硬化材料层的铅笔硬度大于7H，所述刚性硬化材料层的铅笔硬度大于7H且不大于9H。
  5. 根据权利要求2-3中任一项所述的盖板，其中所述柔性硬化材料层和所述刚性硬化材料层均包括由硅氧烷高分子材料和树脂材料形成的复合物。
  6. 根据权利要求2-3中任一项所述的盖板，还包括：
    附接于所述硬化层的油墨遮挡层，所述油墨遮挡层包括位于所述弯折区内的第一油墨层部分，所述第一油墨层部分包括柔性油墨材料和刚性油墨材料的混合物。
  7. 根据权利要求6所述的盖板，其中所述第一油墨层部分包括多个柔性油墨材料层和多个刚性油墨材料层，所述多个柔性油墨材料层和多个刚性油墨材料层沿着所述油墨遮挡层和所述硬化层的交界面交替地布置在所述硬化层上。
  8. 根据权利要求7所述的盖板，其中在垂直于所述油墨遮挡层和所述硬化层的交界面的竖直方向上，所述油墨遮挡层中的所述多个柔性油墨材料层分别与所述硬化层中的所述多个柔性硬化材料层对齐，所述油墨遮挡层中的所述多个刚性油墨材料层分别与所述硬化层中的所述多个刚性硬化材料层对齐。
  9. 根据权利要求6所述的盖板，其中所述油墨遮挡层还包括位于所述非弯折区的第二油墨层部分，所述第二油墨层部分由刚性油墨材料形成。
  10. 根据权利要求6所述的盖板，其中所述柔性油墨材料层的弹性模量为6GPa-7GPa，所述刚性油墨材料层的弹性模量为40GPa-60GPa。
  11. 根据权利要求6所述的盖板，所述盖板包括显示区域，所述油墨遮挡层布置在所述显示区域的外围。
  12. 一种显示面板，包括如权利要求1-11中任一项所述的盖板。
  13. 一种显示装置，包括如权利要求12所述的显示面板。
  14. 一种盖板的制备方法，包括：
    提供基材层，所述基材层包括弯折区和非弯折区；以及
    在基材层上形成硬化层，其中所述硬化层包括位于所述弯折区的第一硬化层部分，所述第一硬化层部分包括柔性硬化材料和刚性硬化材料的混合物。。
  15. 根据权利要求14所述的制备方法，其中通过蒸镀工艺在所述基材层上形成所述硬化层，所述制备方法包括：
    利用第一掩膜板在所述基材层的弯折区和非弯折区上蒸镀刚性硬化材料，所述基材层的非弯折区上的刚性硬化材料形成所述硬化层的第二硬化层部分；
    利用第二掩膜板在所述基材层的弯折区上蒸镀柔性硬化材料，其中所述第一掩膜板和所述第二掩膜板的图案互补。
  16. 根据权利要求15所述的制备方法，还包括：
    在所述硬化层上形成油墨遮挡层，所述油墨遮挡层包括位于所述第一硬化层部分上的第一油墨层部分，所述第一油墨层部分包括柔性油墨材料和刚性油墨材料的混合物。
  17. 根据权利要求16所述的制备方法，其中所述油墨遮挡层包括位于所述第二硬化层部分上的第二油墨层部分，其中形成所述油墨遮挡层包括：
    采用第一丝印网版在所述第一硬化层部分上和所述第二硬化层部分上打印刚性油墨材料；
    采用第二丝印网版在所述第一硬化层部分上打印柔性油墨材料，其中所述第一丝印网版和所述第二丝印网版的图案互补。
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