WO2020133819A1 - 可拉伸显示装置的制作方法及可拉伸显示装置 - Google Patents

可拉伸显示装置的制作方法及可拉伸显示装置 Download PDF

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WO2020133819A1
WO2020133819A1 PCT/CN2019/083122 CN2019083122W WO2020133819A1 WO 2020133819 A1 WO2020133819 A1 WO 2020133819A1 CN 2019083122 W CN2019083122 W CN 2019083122W WO 2020133819 A1 WO2020133819 A1 WO 2020133819A1
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Prior art keywords
pdms
pixel units
display device
stretchable display
pdms substrate
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French (fr)
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邵源
闫春秋
陈孝贤
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • 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
    • H10K50/842—Containers
    • H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/1201—Manufacture or treatment
    • 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

Definitions

  • the present invention relates to the field of display technology, and in particular, to a method for manufacturing a stretchable display device and a stretchable display device.
  • LCD Liquid Crystal Display
  • OLED organic light-emitting diode
  • Patent CN201410343417 introduces a structure using glass fiber and glass composite to enhance the flexibility of the flexible substrate.
  • Patent CN200880009693 introduces a method of compounding glass, nanofibers and resin in order to change the performance of the substrate.
  • the current mainstream substrate materials mainly include three categories of ultra-thin glass, metals and polymer films, of which the most applications
  • the main points of flexible polymer substrates such as polyimide (PI) substrate materials, are characterized by good mechanical properties, excellent chemical resistance, good optical transmittance, and "roll-to-roll” production.
  • the material of choice for existing flexible substrates has received extensive attention.
  • the mainstream flexible display structure is also based on the original basis, the expansion of the material into flexibility.
  • the object of the present invention is to provide a method for manufacturing a stretchable display device, which combines a flexible PDMS (Polydimethylsiloxane, polydimethylsiloxane) substrate with a PDMS isolation column to form a fixed receiving cavity to protect the pixel unit. It is ensured that the TFT switch and the pixel unit will not be deformed and destroyed by the pulling force during the stretching process.
  • PDMS Polydimethylsiloxane, polydimethylsiloxane
  • the object of the present invention is also to provide a stretchable display device, which can ensure that the TFT switch and the pixel unit will not be deformed and destroyed by the pulling force during the stretching process, so as to have more excellent performance in the field of flexible and scalable.
  • the present invention provides a method for manufacturing a stretchable display device, including the steps of manufacturing a PDMS substrate, the steps of fabricating a plurality of pixel units each independently forming an island on the PDMS substrate, and manufacturing corresponding to The steps of multiple TFT switches on the multiple pixel units, the steps of fabricating multiple PDMS isolation columns for isolating the multiple pixel units, and the fabrication of covering the multiple pixel units, multiple TFT switches, and multiple The steps of the encapsulation layer of the PDMS isolation column;
  • the plurality of PDMS isolation columns enclose a plurality of receiving cavities on the PDMS substrate, the plurality of pixel units are respectively located in the plurality of receiving cavities, and the packaging layer encapsulates the plurality of receiving cavities.
  • the manufacturing method of the stretchable display device specifically includes the following steps:
  • Step S1 Provide an original PDMS substrate, and pattern the original PDMS substrate to form a PDMS substrate and a plurality of PDMS isolation columns on the PDMS substrate, the plurality of PDMS isolation columns enclosing a plurality of receiving chambers on the PDMS substrate ;
  • Step S2 fabricate a plurality of pixel units independently formed into islands on the PDMS substrate and respectively corresponding to the plurality of receiving chambers;
  • Step S3 forming a plurality of TFT switches respectively corresponding to the plurality of pixel units
  • Step S4 Form an encapsulation layer on the plurality of receiving chambers and the PDMS isolation column to complete the encapsulation of the plurality of receiving chambers to obtain a stretchable display device.
  • the thickness of the original PDMS substrate is 100-1000 ⁇ m.
  • the step S1 further includes hardening the bottom of the containing cavity and the side wall of the PDMS isolation column by means of exposure.
  • the pixel unit is a liquid pixel material
  • the step S2 further includes making a sealing layer above the plurality of pixel units, the sealing layer sealing the plurality of pixel units in their respective receiving chambers;
  • the sealing layer is PDMS material;
  • the plurality of TFT switches are formed on the sealing layer.
  • the manufacturing method of the stretchable display device specifically includes the following steps:
  • Step S1 providing a PDMS solution, and coating the PDMS solution to form a PDMS substrate;
  • Step S2 forming a plurality of pixel units each independently forming an island on the PDMS substrate;
  • Step S3 forming a plurality of TFT switches respectively corresponding to the plurality of pixel units
  • Step S4 forming a PDMS film layer that wraps the plurality of pixel units on the PDMS substrate, a plurality of pixel units, and a plurality of TFT switches, and the PDMS film layer is used to isolate the plurality of pixel units A plurality of PDMS isolation pillars and an encapsulation layer covering the plurality of pixel units, a plurality of TFT switches, and a plurality of PDMS isolation pillars.
  • the thickness of the PDMS substrate is 10-200 ⁇ m.
  • the invention also provides a stretchable display device, including a PDMS substrate, a plurality of pixel units provided on the PDMS substrate to form islands independently, and a plurality of TFT switches and devices respectively corresponding to the plurality of pixel units A plurality of PDMS isolation pillars that isolate the plurality of pixel units on the PDMS substrate, and a packaging layer covering the plurality of pixel units, a plurality of TFT switches, and a plurality of PDMS isolation pillars;
  • the plurality of PDMS isolation columns enclose a plurality of receiving cavities on the PDMS substrate, the plurality of pixel units are respectively located in the plurality of receiving cavities, and the packaging layer encapsulates the plurality of receiving cavities.
  • the thickness of the PDMS substrate is 10-200 ⁇ m.
  • the stretchable display device further includes a sealing layer between the plurality of pixel units and the plurality of TFT switches, and the sealing layer seals the plurality of pixel units in their corresponding receiving chambers, respectively;
  • the pixel unit is a liquid pixel material, and the TFT switch is provided on the sealing layer.
  • the present invention provides a method for manufacturing a stretchable display device, which uses a highly elastic PDMS substrate and uses a PDMS isolation column to enclose a plurality of fixed receiving chambers on the PDMS substrate
  • the plurality of pixel units are separately accommodated and protected, so that the manufactured stretchable display device not only has excellent stretchability, but also can ensure that the TFT switch and the pixel unit will not be deformed by the pulling force during the stretching process and cause deformation and Destruction, making it more excellent in the field of flexible and scalable.
  • the stretchable display device of the present invention uses a highly elastic PDMS substrate and uses a PDMS isolation column to enclose a plurality of fixed accommodating cavities on the PDMS substrate to respectively accommodate and protect a plurality of pixel units on the PDMS substrate, thereby Not only has excellent stretchability, but also can ensure that the TFT switch and pixel unit will not be deformed and destroyed by the pulling force during the stretching process, and has more excellent performance in the field of flexible and scalable.
  • FIG. 1 is a schematic flowchart of a first embodiment of a method for manufacturing a stretchable display device of the present invention
  • FIG. 2 is a schematic flowchart of a second embodiment of a method for manufacturing a stretchable display device of the present invention
  • FIG. 3 is a schematic flowchart of a third embodiment of a method for manufacturing a stretchable display device of the present invention.
  • FIG. 1 is a schematic flowchart of a first embodiment of a method for manufacturing a stretchable display device according to the present invention. This embodiment specifically includes the following steps:
  • Step S1 an original PDMS substrate 1'is provided, and the original PDMS substrate 1'is patterned to form a PDMS substrate 1 and a plurality of PDMS isolation columns 4 on the PDMS substrate 1, the plurality of PDMS isolation columns 4 in PDMS A plurality of accommodating chambers 9 are enclosed on the base 1.
  • the thickness of the original PDMS substrate 1' is 100-1000 m.
  • the original PDMS substrate 1' is patterned by using a yellow light process or an imprint method, wherein the yellow light process includes a photoresist coating step, an exposure step, and a developing step that are sequentially performed , Etching step and photoresist removal step.
  • the yellow light process includes a photoresist coating step, an exposure step, and a developing step that are sequentially performed , Etching step and photoresist removal step.
  • the step S1 may further include hardening the bottom of the receiving chamber 9 and the side wall of the PDMS isolation column 4 by means of exposure.
  • Step S2 Fabricate independent islands on the PDMS substrate 1 and respectively correspond to a plurality of pixel units 2 located in the plurality of receiving chambers 9, the plurality of receiving chambers 9 respectively corresponding to the plurality of pixel units 2 The pixel unit 2 is protected.
  • the pixel unit 2 may be an OLED pixel unit or an LCD pixel unit.
  • Step S3 forming a plurality of TFT switches 3 respectively corresponding to the plurality of pixel units 2.
  • Step S4 forming an encapsulation layer 5 on the plurality of accommodating chambers 9 and the PDMS isolation column 4 to complete the encapsulation of the plurality of accommodating chambers 9 to obtain a stretchable display device.
  • the manufacturing method of the stretchable display device of this embodiment adopts the PDMS substrate 1 with high elasticity, and uses the PDMS isolation column 2 to enclose a plurality of fixed receiving chambers 9 on the PDMS substrate 1 Each pixel unit 2 is separately accommodated and protected.
  • the presence of the PDMS isolation column 2 can effectively reduce the manufacturing process and the stress generated during the bending process, so that the obtained stretchable display device not only has excellent stretchability, but also can guarantee its During the stretching process, the TFT switch 3 and the pixel unit 2 will not be deformed and damaged by the pulling force, so that they have more excellent performance in the field of flexible and scalable.
  • step S1 further includes hardening the bottom of the receiving chamber 9 and the side wall of the PDMS isolation column 4 by means of exposure, then the exposed PDMS part will be harder than the untreated part It has greater hardness and less elasticity, so that a plurality of island-like hardened blocks corresponding to the plurality of receiving chambers 9 will be formed on the PDMS substrate 1 at this time.
  • the presence of the hardened blocks makes the PDMS substrate 1 Various processes can be performed on other substrates by vacuum suction without wrinkling and deformation.
  • the presence of the hardened block can better protect the pixel unit 2 from damage during bending and stretching, strengthen the protection of the device itself, and have wide application prospects in stretchable equipment.
  • a fully flexible PDMS substrate 1 can also be used, that is, without any hardening treatment, the existence of the originally highly elastic PDMS isolation column 2 can effectively reduce the stress generated during the manufacturing process and the bending process, and ensure that the entire device has Better scalability.
  • FIG. 2 is a schematic flowchart of a second embodiment of a method for manufacturing a stretchable display device of the present invention. This embodiment specifically includes the following steps:
  • Step S1 Provide a PDMS solution, and apply the PDMS solution to form a PDMS substrate 1.
  • a PDMS substrate 1 is obtained by spin-coating a PDMS solution and dried and hardened.
  • the thickness of the PDMS substrate 1 is 10-200um.
  • Step S2 forming a plurality of pixel units 2 each independently forming an island on the PDMS substrate 1.
  • the pixel unit 2 may be an OLED pixel unit or an LCD pixel unit.
  • Step S3 forming a plurality of TFT switches 3 respectively corresponding to the plurality of pixel units 2.
  • Step S4 forming a PDMS film layer 5'that wraps the plurality of pixel units 2 on the PDMS substrate 1, a plurality of pixel units 2 and a plurality of TFT switches 3, and the PDMS film layer 5'
  • the plurality of PDMS isolation pillars 4 separated by the plurality of pixel units 2 and the encapsulation layer 5 covering the plurality of pixel units 2, the plurality of TFT switches 3, and the plurality of PDMS isolation pillars 4 are used to protect the pixel unit 2 Good protection.
  • step S4 inkjet printing (inkjet printing (IJP) or coating method to form the PDMS film layer 5'.
  • FIG. 3 is a schematic flowchart of a third embodiment of a method for manufacturing a stretchable display device of the present invention. This embodiment specifically includes the following steps:
  • Step S1 an original PDMS substrate 1'is provided, and the original PDMS substrate 1'is patterned to form a PDMS substrate 1 and a plurality of PDMS isolation columns 4 on the PDMS substrate 1, the plurality of PDMS isolation columns 4 in PDMS A plurality of accommodating chambers 9 are enclosed on the base 1.
  • the thickness of the original PDMS substrate 1' is 100-1000 m.
  • the original PDMS substrate 1' is patterned by using a yellow light process or an imprint method, wherein the yellow light process includes a photoresist coating step, an exposure step, and a developing step that are sequentially performed , Etching step and photoresist removal step.
  • the yellow light process includes a photoresist coating step, an exposure step, and a developing step that are sequentially performed , Etching step and photoresist removal step.
  • the step S1 may further include hardening the bottom of the receiving chamber 9 and the side wall of the PDMS isolation column 4 by means of exposure.
  • Step S2 using the IJP method to drop the liquid pixel material into the containing cavity 9 so that it can normally emit light in the liquid state, forming a plurality of pixel units 2 respectively corresponding to the multiple containing cavity 9; and then coating PDMS
  • a flexible material is used to seal the pixel unit 2 in the accommodating cavity 9 to form a sealing layer 6 so that the liquid pixel unit 2 is stably present in the sealed accommodating cavity 9.
  • the pixel unit 2 may be an OLED pixel unit or an LCD pixel unit.
  • Step S3 forming a plurality of TFT switches 3 corresponding to the plurality of pixel units 2 on the sealing layer 6 respectively.
  • Step S4 forming an encapsulation layer 5 on the plurality of accommodating chambers 9 and the PDMS isolation column 4 to complete the encapsulation of the entire accommodating chamber 9 to obtain a stretchable display device.
  • a fully flexible PDMS substrate 1 can be used, that is, without any hardening treatment, at the same time, a liquid pixel material is used to make a colored pixel unit 2 and sealed by a sealing layer 6
  • the pixel unit 2 can be unaffected as the cavity of the accommodating cavity 9 is stretched and chromaticity penetration is not affected, thereby obtaining a truly flexible stretchable display device.
  • the present invention also provides a stretchable display device, including a PDMS substrate 1, a plurality of pixel units 2 and a plurality of pixel units provided on the PDMS substrate 1 to form islands independently.
  • a stretchable display device including a PDMS substrate 1, a plurality of pixel units 2 and a plurality of pixel units provided on the PDMS substrate 1 to form islands independently.
  • a plurality of PDMS isolation columns 4 provided on the PDMS substrate 1 to isolate the plurality of pixel units 2 and covering the plurality of pixel units 2 ,
  • the plurality of PDMS isolation columns 4 enclose a plurality of accommodating cavities 9 on the PDMS substrate 1, the plurality of pixel units 2 are respectively located in the plurality of accommodating cavities 9, and the encapsulation layer
  • the accommodating cavity 9 is encapsulated.
  • the thickness of the PDMS substrate 1 is 10-200 ⁇ m.
  • the stretchable display device of the present invention may further include a sealing layer 6 between the plurality of pixel units 2 and the plurality of TFT switches 3, and the sealing layer 6 separates the plurality of pixel units 2 It is sealed in its corresponding receiving chamber 9.
  • the pixel unit 2 may also be a liquid pixel material, and the TFT switch 3 is provided on the sealing layer 6.
  • the stretchable display device of the present invention uses a highly elastic PDMS substrate 1 and a PDMS isolation column 4 to enclose a plurality of fixed receiving chambers 9 on the PDMS substrate 1 to separate the plurality of pixel units 2 on the PDMS substrate
  • the containment protection not only has excellent stretchability, but also can ensure that the TFT switch 3 and the pixel unit 2 will not be deformed and destroyed by the pulling force during the stretching process, and has more excellent performance in the field of flexible and scalable.
  • the present invention provides a method for manufacturing a stretchable display device, which uses a highly elastic PDMS substrate and uses a PDMS isolation column to enclose a plurality of fixed receiving chambers on the PDMS substrate to control the PDMS substrate.
  • a plurality of pixel units are separately accommodated and protected, so that the manufactured stretchable display device not only has excellent stretchability, but also can ensure that the TFT switch and the pixel unit will not be deformed by the pulling force during the stretching process and cause deformation and Destruction, making it more excellent in the field of flexible and scalable.
  • the stretchable display device of the present invention uses a highly elastic PDMS substrate and uses a PDMS isolation column to enclose a plurality of fixed accommodating cavities on the PDMS substrate to respectively accommodate and protect a plurality of pixel units on the PDMS substrate, thereby Not only has excellent stretchability, but also can ensure that the TFT switch and pixel unit will not be deformed and destroyed by the pulling force during the stretching process, and has more excellent performance in the field of flexible and scalable.

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Abstract

一种可拉伸显示装置的制作方法及可拉伸显示装置。可拉伸显示装置，采用高弹性的PDMS基底（1），并搭配使用PDMS隔离柱（4）在PDMS基底（1）上围出多个固定的容纳腔（9）来对PDMS基底（1）上的多个像素单元（2）分别进行容纳保护，从而使制得的可拉伸显示装置不仅具有优异的拉伸性，并能够保证其在拉伸过程中TFT开关（3）及像素单元（2）不会受到拉力而导致变形及破坏，使其在柔性可伸缩领域具有更加优异的表现。

Description

可拉伸显示装置的制作方法及可拉伸显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种可拉伸显示装置的制作方法及可拉伸显示装置。
 背景技术
随着电子跟显示技术的不断发展。柔性显示以其众多优点，如质量轻、厚度小、寿命长、可弯曲等，逐步得到研究团队的青睐，同时成为一种最具发展潜力的下一代显示技术，包括柔性液晶显示器（Liquid Crystal Display，LCD）、柔性有机发光二极管显示器（organic light-emitting diode，OLED）等。
柔性显示的实现，除了对现有材料进行改变外，对制备工艺及结构设计也提出了新的要求和挑战，像素单元作为显示器的重要组成部分，要求其在柔性应用中受到良好的保护，或可具备优秀的弯折拉伸特性。因而，如何制备出同时拥有以上特点的显示结构成为研究者研究的一个主要课题。专利CN201410343417介绍了一种利用玻璃纤维与玻璃复合的结构，以求增强柔性基板柔韧性。专利CN200880009693介绍了一种将玻璃、纳米纤维、树脂复合的方法以求改变基板性能。
然而，据现有材料技术和设计而言，同时满足这些结构要求的材料和设计是不存在的，现在主流的基板材料主要包括超薄玻璃、金属类以及聚合物薄膜三大类，其中应用最多的要数聚合物柔性基板，如聚酰亚胺（PI）基板材料，其以良好的力学性能、优异的耐化性能、良好的光学透过率、可“卷对卷”生产等特点，成为现有柔性基板的首选材料并得到广泛的重视。主流的柔性显示结构也只是在原有基础上，进行材料转为柔性的扩展。但是，此类结构及材料在应用中依然存在较多的问题，在柔性及可拉伸器件上的应用更是一筹莫展。
 技术问题
本发明的目的在于提供一种可拉伸显示装置的制作方法，将柔性的PDMS（Polydimethylsiloxane，聚二甲基硅氧烷）基底搭配PDMS隔离柱，形成固定的容纳腔来对像素单元进行保护，保证在拉伸过程中TFT开关及像素单元不会受到拉力而导致变形及破坏。
本发明的目的还在于提供一种可拉伸显示装置，能够保证在拉伸的过程中TFT开关及像素单元不会受到拉力而导致变形及破坏，从而在柔性可伸缩领域具有更加优异的表现。
 技术解决方案
为实现上述目的，本发明提供一种可拉伸显示装置的制作方法，包括制作形成PDMS基底的步骤、在所述PDMS基底上制作各自独立成岛的多个像素单元的步骤、制作分别对应于所述多个像素单元上的多个TFT开关的步骤、制作用于隔离所述多个像素单元的多个PDMS隔离柱的步骤以及制作覆盖所述多个像素单元、多个TFT开关及多个PDMS隔离柱的封装层的步骤；
其中，所述多个PDMS隔离柱在PDMS基底上围出多个容纳腔，所述多个像素单元分别对应位于该多个容纳腔内，所述封装层对所述多个容纳腔进行封装。
可选地，所述的可拉伸显示装置的制作方法具体包括如下步骤：
步骤S1、提供原始PDMS基板，对所述原始PDMS基板进行图案化处理，形成PDMS基底及PDMS基底上的多个PDMS隔离柱，所述多个PDMS隔离柱在PDMS基底上围出多个容纳腔；
步骤S2、在所述PDMS基底上制作各自独立成岛且分别对应位于所述多个容纳腔内的多个像素单元；
步骤S3、形成多个分别对应在所述多个像素单元上的TFT开关；
步骤S4、在所述多个容纳腔及PDMS隔离柱上形成封装层，完成对多个容纳腔的封装，得到可拉伸显示装置。
所述原始PDMS基板的厚度为100-1000μm。
所述步骤S1还包括通过曝光的方式对所述容纳腔底部及PDMS隔离柱侧壁进行硬化处理。
所述像素单元为液态像素材料，所述步骤S2还包括在所述多个像素单元上方制作密封层，所述密封层将所述多个像素单元分别密封在其相应的容纳腔之内；所述密封层为PDMS材料；
所述步骤S3中，所述多个TFT开关在所述密封层上形成。
可选地，所述的可拉伸显示装置的制作方法具体包括如下步骤：
步骤S1、提供PDMS溶液，利用PDMS溶液涂布形成PDMS基底；
步骤S2、在所述PDMS基底上形成各自独立成岛的多个像素单元；
步骤S3、形成多个分别对应在所述多个像素单元上的TFT开关；
步骤S4、在所述PDMS基底、多个像素单元及多个TFT开关上形成将所述多个像素单元分别包裹的PDMS膜层，由该PDMS膜层得到将所述多个像素单元隔离开的多个PDMS隔离柱及覆盖所述多个像素单元、多个TFT开关、多个PDMS隔离柱的封装层。
所述PDMS基底的厚度为10-200μm。
本发明还提供一种可拉伸显示装置，包括PDMS基底、设于所述PDMS基底上自独立成岛的多个像素单元、多个分别对应在所述多个像素单元上的TFT开关、设于所述PDMS基底上将所述多个像素单元隔离开的多个PDMS隔离柱以及覆盖所述多个像素单元、多个TFT开关、多个PDMS隔离柱的封装层；
其中，所述多个PDMS隔离柱在PDMS基底上围出多个容纳腔，所述多个像素单元分别对应位于该多个容纳腔内，所述封装层对所述多个容纳腔进行封装。
所述PDMS基底的厚度为10-200μm。
所述的可拉伸显示装置还包括位于所述多个像素单元和多个TFT开关之间的密封层，所述密封层将所述多个像素单元分别密封在其相应的容纳腔之内；
所述像素单元为液态像素材料，所述TFT开关设于所述密封层上。
 有益效果
本发明的有益效果：本发明提供一种可拉伸显示装置的制作方法，采用高弹性的PDMS基底，并搭配使用PDMS隔离柱在PDMS基底上围出多个固定的容纳腔来对PDMS基底上的多个像素单元分别进行容纳保护，从而使制得的可拉伸显示装置不仅具有优异的拉伸性，并能够保证其在拉伸过程中TFT开关及像素单元不会受到拉力而导致变形及破坏，使其在柔性可伸缩领域具有更加优异的表现。本发明的可拉伸显示装置，使用高弹性的PDMS基底，并搭配使用PDMS隔离柱在PDMS基底上围出多个固定的容纳腔来对PDMS基底上的多个像素单元分别进行容纳保护，从而不仅具有优异的拉伸性，并能够保证在拉伸的过程中TFT开关及像素单元不会受到拉力而导致变形及破坏，在柔性可伸缩领域具有更加优异的表现。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
 附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
附图中，
图1为本发明的可拉伸显示装置的制作方法的第一实施例的流程示意图；
图2为本发明的可拉伸显示装置的制作方法的第二实施例的流程示意图；
图3为本发明的可拉伸显示装置的制作方法的第三实施例的流程示意图。
 本发明的实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1，图1为本发明的可拉伸显示装置的制作方法的第一实施例的流程示意图，本实施例中具体包括如下步骤：
步骤S1、提供原始PDMS基板1’，对所述原始PDMS基板1’进行图案化处理，形成PDMS基底1及PDMS基底1上的多个PDMS隔离柱4，所述多个PDMS隔离柱4在PDMS基底1上围出多个容纳腔9。
具体地，所述原始PDMS基板1’的厚度为100-1000μm。
具体地，所述步骤S1中采用黄光制程或压印法对所述原始PDMS基板1’进行图案化处理，其中所述黄光制程包括依次进行的光阻涂布步骤、曝光步骤、显影步骤、蚀刻步骤及去光阻步骤。
具体地，所述步骤S1还可以包括通过曝光的方式对所述容纳腔9底部及PDMS隔离柱4侧壁进行硬化处理。
步骤S2、在所述PDMS基底1上制作各自独立成岛且分别对应位于所述多个容纳腔9内的多个像素单元2，所述多个容纳腔9分别对应容纳该多个像素单元2而对像素单元2进行保护。
具体地，所述像素单元2可以为OLED像素单元或LCD像素单元。
步骤S3、形成多个分别对应在所述多个像素单元2上的TFT开关3。
步骤S4、在所述多个容纳腔9及PDMS隔离柱4上形成封装层5，完成对多个容纳腔9的封装，得到可拉伸显示装置。
本实施例的可拉伸显示装置的制作方法，采用高弹性的PDMS基底1，并搭配使用PDMS隔离柱2在PDMS基底1上围出多个固定的容纳腔9来对PDMS基底1上的多个像素单元2分别进行容纳保护，PDMS隔离柱2的存在可以有效减少制程及在弯曲过程中产生的应力，从而使制得的可拉伸显示装置不仅具有优异的拉伸性，并能够保证其在拉伸过程中TFT开关3及像素单元2不会受到拉力而导致变形及破坏，使其在柔性可伸缩领域具有更加优异的表现。
另外需要说明的是，如所述步骤S1中还包括通过曝光的方式对所述容纳腔9底部及PDMS隔离柱4侧壁进行硬化处理，那么，经过曝光处理的PDMS部分较未处理的部分会具有更大的硬度及较小的弹性，从而此时会在PDMS基底1上形成多个对应所述多个容纳腔9的类似小岛的硬化区块，该硬化区块的存在使得PDMS基底1可以通过真空吸附在其它基板上进行各种制程，而不会发生褶皱及变形的现象。以TFT制程为例，硬化区块的存在可以在弯曲及拉伸的过程中更好的保护像素单元2不受损伤，对器件本身加强了保护，在可拉伸设备中具有广泛应用前景。当然，本实施例也可以采用全柔性的PDMS基底1，即不做任何硬化处理，原本高弹性的PDMS隔离柱2的存在便可以有效减少制程及在弯曲过程中产生的应力，保证整个器件具有较佳的可伸缩性。
请参阅图2，图2为本发明的可拉伸显示装置的制作方法的第二实施例的流程示意图，本实施例中具体包括如下步骤：
步骤S1、提供PDMS溶液，利用PDMS溶液涂布形成PDMS基底1。
具体地，所述步骤S1中通过旋涂PDMS溶液、干燥硬化后得到PDMS基底1，所述PDMS基底1的厚度为10-200um。
步骤S2、在所述PDMS基底1上形成各自独立成岛的多个像素单元2。
具体地，所述像素单元2可以为OLED像素单元或LCD像素单元。
步骤S3、形成多个分别对应在所述多个像素单元2上的TFT开关3。
步骤S4、在所述PDMS基底1、多个像素单元2及多个TFT开关3上形成将所述多个像素单元2分别包裹的PDMS膜层5’，由该PDMS膜层5’得到将所述多个像素单元2隔离开的多个PDMS隔离柱4及覆盖所述多个像素单元2、多个TFT开关3、多个PDMS隔离柱4的封装层5，以起到对像素单元2的良好保护作用。
具体地，所述步骤S4中，通过喷墨打印（inkjet printing ，IJP）或涂布法形成所述PDMS膜层5’。
请参阅图3，图3为本发明的可拉伸显示装置的制作方法的第三实施例的流程示意图，本实施例中具体包括如下步骤：
步骤S1、提供原始PDMS基板1’，对所述原始PDMS基板1’进行图案化处理，形成PDMS基底1及PDMS基底1上的多个PDMS隔离柱4，所述多个PDMS隔离柱4在PDMS基底1上围出多个容纳腔9。
具体地，所述原始PDMS基板1’的厚度为100-1000μm。
具体地，所述步骤S1中采用黄光制程或压印法对所述原始PDMS基板1’进行图案化处理，其中所述黄光制程包括依次进行的光阻涂布步骤、曝光步骤、显影步骤、蚀刻步骤及去光阻步骤。
具体地，所述步骤S1还可以包括通过曝光的方式对所述容纳腔9底部及PDMS隔离柱4侧壁进行硬化处理。
步骤S2、使用IJP方式将液态的像素材料滴入容纳腔9内，使其在液态时可以正常发光，形成分别对应位于所述多个容纳腔9内的多个像素单元2；然后涂布PDMS等柔性材料对容纳腔9内的像素单元2进行密封，形成密封层6，使液态的像素单元2稳定存在于密封的容纳腔9内。
具体地，所述像素单元2可以为OLED像素单元或LCD像素单元。
步骤S3、在所述密封层6上形成多个分别对应在所述多个像素单元2上的TFT开关3。
步骤S4、在所述多个容纳腔9及PDMS隔离柱4上形成封装层5，完成对整个容纳腔9的封装，得到可拉伸显示装置。
本实施例的可拉伸显示装置的制作方法，可以采用全柔性的PDMS基底1，即不做任何硬化处理，同时采用液态的像素材料制作彩色的像素单元2，并通过密封层6将其密封在容纳腔9内，像素单元2可以随容纳腔9腔体拉伸弯曲而色度穿透等不受影响，从而得到真正意义上的柔性的可拉伸显示装置。
基于上述的可拉伸显示装置的制作方法，本发明还提供一种可拉伸显示装置，包括PDMS基底1、设于所述PDMS基底1上自独立成岛的多个像素单元2、多个分别对应在所述多个像素单元2上的TFT开关3、设于所述PDMS基底1上将所述多个像素单元2隔离开的多个PDMS隔离柱4以及覆盖所述多个像素单元2、多个TFT开关3、多个PDMS隔离柱4的封装层5。
其中，所述多个PDMS隔离柱4在PDMS基底1上围出多个容纳腔9，所述多个像素单元2分别对应位于该多个容纳腔9内，所述封装层对所述多个容纳腔9进行封装。
具体地，所述PDMS基底1的厚度为10-200μm。
具体地，本发明的可拉伸显示装置，还可包括位于所述多个像素单元2和多个TFT开关3之间的密封层6，所述密封层6将所述多个像素单元2分别密封在其相应的容纳腔9之内。
具体地，所述像素单元2也可以为液态像素材料，所述TFT开关3设于所述密封层6之上。
本发明的可拉伸显示装置，使用高弹性的PDMS基底1，并搭配使用PDMS隔离柱4在PDMS基底1上围出多个固定的容纳腔9来对PDMS基底上的多个像素单元2分别进行容纳保护，从而不仅具有优异的拉伸性，并能够保证在拉伸的过程中TFT开关3及像素单元2不会受到拉力而导致变形及破坏，在柔性可伸缩领域具有更加优异的表现。
综上所述，本发明提供一种可拉伸显示装置的制作方法，采用高弹性的PDMS基底，并搭配使用PDMS隔离柱在PDMS基底上围出多个固定的容纳腔来对PDMS基底上的多个像素单元分别进行容纳保护，从而使制得的可拉伸显示装置不仅具有优异的拉伸性，并能够保证其在拉伸的过程中TFT开关及像素单元不会受到拉力而导致变形及破坏，使其在柔性可伸缩领域具有更加优异的表现。本发明的可拉伸显示装置，使用高弹性的PDMS基底，并搭配使用PDMS隔离柱在PDMS基底上围出多个固定的容纳腔来对PDMS基底上的多个像素单元分别进行容纳保护，从而不仅具有优异的拉伸性，并能够保证在拉伸的过程中TFT开关及像素单元不会受到拉力而导致变形及破坏，在柔性可伸缩领域具有更加优异的表现。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (10)

  1. 一种可拉伸显示装置的制作方法，包括制作形成PDMS基底的步骤、在所述PDMS基底上制作各自独立成岛的多个像素单元的步骤、制作分别对应于所述多个像素单元上的多个TFT开关的步骤、制作用于隔离所述多个像素单元的多个PDMS隔离柱的步骤以及制作覆盖所述多个像素单元、多个TFT开关及多个PDMS隔离柱的封装层的步骤；
    其中，所述多个PDMS隔离柱在PDMS基底上围出多个容纳腔，所述多个像素单元分别对应位于该多个容纳腔内，所述封装层对所述多个容纳腔进行封装。
  2. 如权利要求1所述的可拉伸显示装置的制作方法，具体包括如下步骤：
    步骤S1、提供原始PDMS基板，对所述原始PDMS基板进行图案化处理，形成PDMS基底及PDMS基底上的多个PDMS隔离柱，所述多个PDMS隔离柱在PDMS基底上围出多个容纳腔；
    步骤S2、在所述PDMS基底上制作各自独立成岛且分别对应位于所述多个容纳腔内的多个像素单元；
    步骤S3、形成多个分别对应在所述多个像素单元上的TFT开关；
    步骤S4、在所述多个容纳腔及PDMS隔离柱上形成封装层，完成对多个容纳腔的封装，得到可拉伸显示装置。
  3. 如权利要求2所述的可拉伸显示装置的制作方法，其中，所述原始PDMS基板的厚度为100-1000μm。
  4. 如权利要求2所述的可拉伸显示装置的制作方法，其中，所述步骤S1还包括通过曝光的方式对所述容纳腔底部及PDMS隔离柱侧壁进行硬化处理。
  5. 如权利要求2所述的可拉伸显示装置的制作方法，其中，所述像素单元为液态像素材料，所述步骤S2还包括在所述多个像素单元上方制作密封层，所述密封层将所述多个像素单元分别密封在其相应的容纳腔之内；所述密封层为PDMS材料；
    所述步骤S3中，所述多个TFT开关在所述密封层上形成。
  6. 如权利要求1所述的可拉伸显示装置的制作方法，具体包括如下步骤：
    步骤S1、提供PDMS溶液，利用PDMS溶液涂布形成PDMS基底；
    步骤S2、在所述PDMS基底上形成各自独立成岛的多个像素单元；
    步骤S3、形成多个分别对应在所述多个像素单元上的TFT开关；
    步骤S4、在所述PDMS基底、多个像素单元及多个TFT开关上形成将所述多个像素单元分别包裹的PDMS膜层，由该PDMS膜层得到将所述多个像素单元隔离开的多个PDMS隔离柱及覆盖所述多个像素单元、多个TFT开关、多个PDMS隔离柱的封装层。
  7. 如权利要求1所述的可拉伸显示装置的制作方法，其中，所述PDMS基底的厚度为10-200μm。
  8. 一种可拉伸显示装置，包括PDMS基底、设于所述PDMS基底上自独立成岛的多个像素单元、多个分别对应在所述多个像素单元上的TFT开关、设于所述PDMS基底上将所述多个像素单元隔离开的多个PDMS隔离柱以及覆盖所述多个像素单元、多个TFT开关、多个PDMS隔离柱的封装层；
    其中，所述多个PDMS隔离柱在PDMS基底上围出多个容纳腔，所述多个像素单元分别对应位于该多个容纳腔内，所述封装层对所述多个容纳腔进行封装。
  9. 如权利要求8所述的可拉伸显示装置，其中，所述PDMS基底的厚度为10-200μm。
  10. 如权利要求8所述的可拉伸显示装置，还包括位于所述多个像素单元和多个TFT开关之间的密封层，所述密封层将所述多个像素单元分别密封在其相应的容纳腔之内；
    所述像素单元为液态像素材料，所述TFT开关设于所述密封层上。
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