WO2018209976A1 - 一种柔性显示器的制备方法、柔性显示器和显示设备 - Google Patents

一种柔性显示器的制备方法、柔性显示器和显示设备 Download PDF

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Publication number
WO2018209976A1
WO2018209976A1 PCT/CN2018/071324 CN2018071324W WO2018209976A1 WO 2018209976 A1 WO2018209976 A1 WO 2018209976A1 CN 2018071324 W CN2018071324 W CN 2018071324W WO 2018209976 A1 WO2018209976 A1 WO 2018209976A1
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Prior art keywords
metal lead
film layer
conductive film
flexible display
copper
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PCT/CN2018/071324
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English (en)
French (fr)
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刘政
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京东方科技集团股份有限公司
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Priority to US16/094,453 priority Critical patent/US11119344B2/en
Publication of WO2018209976A1 publication Critical patent/WO2018209976A1/zh

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    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • 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
    • 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
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/16—Materials and properties conductive

Definitions

  • the present disclosure relates to the field of TFT-LCD technology, and in particular, to a method of fabricating a flexible display, a flexible display, and a display device.
  • Thinning is one of the demands of electronic products. Designing the size and weight of display devices is an important consideration in the manufacturing process of electronic devices. Reducing the border of the display device or even making no borders can greatly increase the appeal of the display device. For the flexible display product, because of its bendable characteristics, it is a common practice to bend the edge of the lower frame back to the back to reduce the size of the lower frame. However, a significant problem with this technique is that the material of the bending zone is prone to cracking and crack propagation during manufacturing and use, resulting in a decrease in reliability of the display device, and even an open circuit of the circuit and equipment failure.
  • the present disclosure provides a method of fabricating a flexible display, a flexible display, and a display device.
  • the present disclosure discloses a method of fabricating a flexible display, the method comprising:
  • the flexible substrate and the metal lead are bent;
  • a conductive film layer is formed on the metal lead, the conductive film layer covering at least a bent portion of the metal lead.
  • the forming a conductive film layer on the metal lead comprises:
  • a conductive film layer is formed on the metal lead by electroplating or electroless plating.
  • the forming a conductive film layer on the metal lead by using an electroless plating method includes:
  • the metal lead Dipping the bent portion of the metal lead into a chemical solution, wherein the chemical solution comprises a metal salt and a reducing agent;
  • the metal salt in the chemical solution undergoes a reduction reaction with the reducing agent to form a conductive film layer on the surface of the bent portion of the metal lead.
  • the metal salt comprises one or more of copper sulfate, copper chloride, and copper nitrate.
  • the concentration of copper ions in the chemical solution is about 2.5 g/L to 10 g/L.
  • the reducing agent comprises one or more of formaldehyde and hypophosphite.
  • the chemical solution further comprises a complexing agent, and the complexing agent comprises one or more of triethanolamine and tartaric acid.
  • the chemical solution further contains a pH adjuster, and the pH adjuster comprises one of sodium hydroxide, potassium hydroxide, sulfuric acid, or a mixture of sodium hydroxide and potassium hydroxide.
  • the pH adjuster comprises one of sodium hydroxide, potassium hydroxide, sulfuric acid, or a mixture of sodium hydroxide and potassium hydroxide.
  • the conductive film layer has a thickness of about 0.2 ⁇ m to 10 ⁇ m.
  • the conductive film layer comprises one or more metals of nickel, gold, silver, tin, copper, or two or more metals including nickel, gold, silver, tin, and copper.
  • One or more alloys are one or more alloys.
  • the present disclosure also discloses a flexible display, the flexible display comprising:
  • a conductive film layer formed on an outer surface of the metal lead and covering at least a bendable portion of the metal lead.
  • the conductive film layer completely covers the outer surface of the metal lead.
  • the conductive film layer has a thickness of about 0.2 ⁇ m to 10 ⁇ m.
  • the conductive film layer comprises one or more metals of nickel, gold, silver, tin, copper, or two or more metals including nickel, gold, silver, tin, and copper.
  • One or more alloys are one or more alloys.
  • the present disclosure also discloses a display device comprising the flexible display described above.
  • FIG. 1 is a flow chart showing the steps of a method for fabricating a flexible display according to Embodiment 1 of the present disclosure
  • FIG. 2 is a cross-sectional view showing a flexible substrate formed with a metal lead according to Embodiment 1 of the present disclosure
  • 3a is a cross-sectional view showing a bent flexible substrate of Embodiment 1 of the present disclosure
  • FIG. 3b shows a second schematic cross-sectional view of the bent flexible substrate of the first embodiment of the present disclosure
  • Embodiment 4 is a cross-sectional view showing a flexible display of Embodiment 1 of the present disclosure
  • FIG. 5 is a flow chart showing the steps of a method for fabricating a flexible display according to Embodiment 2 of the present disclosure
  • FIG. 6 is a schematic view showing that a bent portion of a metal lead of Embodiment 2 of the present disclosure is immersed in a chemical solution.
  • FIG. 1 a flow chart of steps of a method for fabricating a flexible display provided by an embodiment of the present disclosure is shown.
  • the method includes:
  • Step 101 forming a metal lead on the flexible substrate.
  • the flexible substrate 201 is formed in accordance with a conventional process, and the metal leads 202 are formed from the first or second metal layers of the display regions on the flexible substrate 201, such as the flexible substrates on which the metal leads are formed as shown in FIG.
  • Step 102 bending the flexible substrate and the metal lead.
  • the flexible substrate 201 and the metal lead 202 are bent to reduce the frame size of the flexible display, such as the bent flexible substrate as shown in FIG. 3a.
  • Metal leads may break during the bending process or break during subsequent use, such as a bent flexible substrate as shown in Figure 3b. Cracking of the metal lead 203 can result in open circuit, equipment failure, and the like.
  • Step 103 forming a conductive film layer on the metal lead, the conductive film layer covering at least a bent portion of the metal lead.
  • a conductive film layer 203 is formed on the metal lead 202, and the conductive film layer covers at least the bent portion of the metal lead 202, as shown in the cross-sectional view of the flexible display shown in FIG. Since the conductive film layer 203 is formed on the bent portion of the metal lead 202, even if the metal lead 202 is broken at the bent portion, the conductive film layer 203 can be electrically conductive, thereby avoiding circuit open circuit, equipment failure, etc. due to cracking of the metal lead 202. problem. According to some embodiments of the present disclosure, a conductive film layer is formed on the metal lead by electroplating or electroless plating.
  • a metal lead is formed on a flexible substrate; the flexible substrate and the metal lead are bent; a conductive film layer is formed on the metal lead, and the conductive film layer covers at least the bending of the metal lead section. Since the conductive film layer is formed on the bent portion of the metal lead, even if the metal lead is cracked after being bent, the conductive film layer can be electrically conductive, thereby avoiding problems such as open circuit of the circuit due to cracking of the metal lead, equipment failure, etc., and reducing the display device At the same time of the frame size, the reliability of the display device is improved, thereby solving the problem of equipment failure and reliability degradation caused by material cracking in the bending zone.
  • FIG. 5 a flow chart of steps of a method for fabricating a flexible display provided by an embodiment of the present disclosure is shown.
  • the method includes:
  • Step 301 forming a metal lead on the flexible substrate.
  • Step 302 bending the flexible substrate and the metal lead.
  • Step 303 immersing the bent portion of the metal lead into a chemical solution, wherein the chemical solution comprises a metal salt and a reducing agent.
  • the conductive film layer 203 is formed on the metal lead 202 by electroless plating.
  • the bent portion of the metal lead 202 is immersed in the chemical solution, and the bent portion of the metal lead shown in FIG. 6 is immersed in the chemistry. Schematic diagram of the solution.
  • the metal leads can be fully immersed in the chemical solution.
  • Step 304 a reduction reaction of the metal salt in the chemical solution with the reducing agent forms a conductive film layer on a surface of the bent portion of the metal lead.
  • the chemical solution includes a metal salt and a reducing agent, and the metal salt and the reducing agent undergo a reduction reaction to form a conductive film layer 203 on the surface of the bent portion of the metal lead 202.
  • the metal salt comprises one or more of copper sulfate, copper chloride, and copper nitrate.
  • the metal salt in the chemical solution is a metal copper salt, and one or more of copper sulfate, copper chloride, and copper nitrate may be used.
  • the concentration of copper ions in the chemical solution is from 2.5 g/L to 10 g/L.
  • the metal salt in the chemical solution is a metal copper salt
  • the copper ion concentration in the chemical solution is controlled to be 2.5 g/L to 10 g/L, thereby controlling the reduction reaction rate and the thickness of the formed conductive film layer 203.
  • the reducing agent comprises one or more of formaldehyde and hypophosphite.
  • the chemical solution further includes a complexing agent including one or more of triethanolamine and tartaric acid.
  • the complexing agent in the chemical solution functions to stabilize the plating solution and refine the crystal grains of the plating layer, so that the thickness of the formed conductive film layer 203 is uniform.
  • the chemical solution further includes a pH adjuster comprising one of sodium hydroxide, potassium hydroxide, sulfuric acid, or a mixture of sodium hydroxide and potassium hydroxide.
  • the conductive film layer has a thickness of 0.2 ⁇ m to 10 ⁇ m.
  • the conductive film layer includes one or a plurality of metals of nickel, gold, silver, tin, copper, or includes two of nickel, gold, silver, tin, copper, or More or one alloy of one or more alloys. Electroless plating may also plate metal lead 202 with one or more of nickel, gold, silver, tin, copper, or the like, or an alloy of two or more of these metals, implementation of the present disclosure. This example is not limited in detail, and can be set according to the actual situation.
  • a metal lead is formed on a flexible substrate; a flexible substrate and a metal lead are bent; a bent portion of the metal lead is immersed in a chemical solution; a metal salt in the chemical solution is reduced
  • the reducing reaction of the agent forms a conductive film layer on the surface of the bent portion of the metal lead. Since the conductive film layer is formed on the bent portion of the metal lead, even if the metal lead is cracked after being bent, the conductive film layer can be electrically conductive, thereby avoiding problems such as open circuit of the circuit and equipment failure due to cracking of the metal lead, and reducing the frame of the display device. At the same time, the size of the display device improves the reliability of the display device, thereby solving the problem of equipment failure and reliability degradation caused by material cracking in the bending zone.
  • the electroless plating method is used to form the conductive film layer, the process equipment is simple, the thickness of the conductive film layer is uniform, and the performance is good.
  • the flexible display includes:
  • the metal lead 202 may be bent with the flexible substrate 201;
  • a conductive film layer 203 is formed on an outer surface of the metal lead 202 and covers at least a bendable portion of the metal lead 201.
  • the conductive film layer 203 completely covers the outer surface of the metal lead 202.
  • the conductive film layer 203 has a thickness of 0.2 ⁇ m to 10 ⁇ m.
  • the conductive film layer 203 is composed of one metal or a plurality of metals selected from the group consisting of nickel, gold, silver, tin, copper, or selected from the group consisting of nickel, gold, silver, and tin.
  • the flexible display includes a flexible substrate and a metal lead formed on the flexible substrate, the metal lead may be bent with the flexible substrate; a conductive film layer is formed on the outer surface of the metal lead, and the conductive The film layer covers at least the bendable portion of the metal lead. Since the conductive film layer is formed on the bendable portion of the metal lead, even if the metal lead is cracked after being bent, the conductive film layer can be electrically conductive, thereby avoiding problems such as open circuit of the metal lead and equipment failure due to cracking of the metal lead, and reducing the display. At the same time, the frame size of the device improves the reliability of the display device, thereby solving the problem of equipment failure and reliability degradation caused by material cracking in the bending zone.
  • An embodiment of the present disclosure provides a display device comprising the flexible display of the third embodiment.
  • the display device includes a flexible display including a flexible substrate and a metal lead formed on the flexible substrate, the metal lead may be bent with the flexible substrate; the outer surface of the metal lead A conductive film layer is formed, and the conductive film layer covers at least a bendable portion of the metal lead. Since the conductive film layer is formed on the bendable portion of the metal lead, even if the metal lead is cracked after being bent, the conductive film layer can be electrically conductive, thereby avoiding problems such as open circuit of the metal lead and equipment failure due to cracking of the metal lead, and reducing the display. At the same time, the frame size of the device improves the reliability of the display device, thereby solving the problem of equipment failure and reliability degradation caused by material cracking in the bending zone.

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  • General Physics & Mathematics (AREA)
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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种柔性显示器的制备方法、柔性显示器和显示设备。制备方法包括：在柔性基板(201)上形成金属引线(202)；将柔性基板(201)及金属引线(202)进行弯折；在金属引线(202)上形成导电膜层(203)，导电膜层(203)至少覆盖金属引线(202)的弯折部分。

Description

一种柔性显示器的制备方法、柔性显示器和显示设备
相关申请的交叉引用
本申请要求于2017年5月15日提交的中国申请号201710339636.2的优先权的权益，所述申请的全部内容通过引用结合在此。
技术领域
本公开内容涉及TFT-LCD技术领域，特别是涉及一种柔性显示器的制备方法、柔性显示器和显示设备。
背景技术
轻薄化是人们对电子产品的需求之一，对显示设备的尺寸和重量设计是电子设备在制造过程中的重要考虑因素。减少显示设备的边框甚至做到无边框，可以在很大程度上提高显示设备的吸引力。对柔性显示产品来说，由于其具有可弯折的特性，将下边框边缘位置向后弯折至背面，从而减小下边框尺寸，是目前较为普遍的一种做法。但是，这种技术存在的一个显著问题是弯折区的材料在制造和使用过程中容易产生开裂并且裂纹延伸，造成显示设备可靠性下降，甚至电路连接线开路、设备失效问题。
发明内容
本公开内容提供一种柔性显示器的制备方法、柔性显示器和显示设备。
具体地，本公开内容公开了一种柔性显示器的制备方法，所述方法包括：
在柔性基板上形成金属引线；
将所述柔性基板及所述金属引线进行弯折；
在所述金属引线上形成导电膜层，所述导电膜层至少覆盖所述金属引线的弯折部分。
可选地，所述在所述金属引线上形成导电膜层包括：
采用电镀法或化学镀法在所述金属引线上形成导电膜层。
可选地，所述采用化学镀法在所述金属引线上形成导电膜层包括：
将所述金属引线的弯折部分浸入化学溶液，其中所述化学溶液包括金属盐、还原剂；
所述化学溶液中的所述金属盐与所述还原剂发生还原反应在所述金属引线的弯折部分的表面形成导电膜层。
可选地，所述金属盐包括硫酸铜、氯化铜、硝酸铜中的一种或多种。
可选地，所述化学溶液中铜离子浓度约为2.5g/L～10g/L。
可选地，所述还原剂包括甲醛、次磷酸盐中的一种或多种。
可选地，所述化学溶液还包括络合剂，所述络合剂包括三乙醇胺、酒石酸中的一种或多种。
可选地，所述化学溶液还含有pH调节剂，所述pH调节剂包括氢氧化钠、氢氧化钾、硫酸中的一种，或氢氧化钠和氢氧化钾的混合物。
可选地，所述导电膜层的厚度约为0.2μm～10μm。
可选地，所述导电膜层包括镍、金、银、锡、铜中的一种金属或多种金属，或包括镍、金、银、锡、铜中的两种或更多种金属形成的一种或多种合金。
本公开内容还公开了一种柔性显示器，所述柔性显示器包括：
柔性基板；
金属引线，所述金属引线形成在所述柔性基板上并且随所述柔性基板弯折设置；
导电膜层，所述导电膜层形成在所述金属引线的外表面上并且至少覆盖所述金属引线的可弯折部分。
可选地，所述导电膜层完全覆盖所述金属引线的外表面。
可选地，所述导电膜层的厚度约为0.2μm～10μm。
可选地，所述导电膜层包括镍、金、银、锡、铜中的一种金属或多种金属，或包括镍、金、银、锡、铜中的两种或更多种金属形成的一种或多种合金。
本公开内容还公开了一种显示设备，所述显示设备包含上述的柔性显示器。
附图说明
图1示出了本公开内容的实施例一的一种柔性显示器的制备方法的步骤流程图；
图2示出了本公开内容的实施例一的形成有金属引线的柔性基板的剖面示意图；
图3a示出了本公开内容的实施例一的弯折的柔性基板的剖面示意图之一；
图3b示出了本公开内容的实施例一的弯折的柔性基板的剖面示意图之二；
图4示出了本公开内容的实施例一的柔性显示器的剖面示意图；
图5示出了本公开内容的实施例二的一种柔性显示器的制备方法的步骤流程图；
图6示出了本公开内容的实施例二的金属引线的弯折部分浸入化学溶液的示意图。
具体实施方式
为使本公开内容的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本公开内容作进一步详细的说明。
实施例一
参照图1，示出了本公开内容的实施例提供的一种柔性显示器的制备方法的步骤流程图。所述方法包括：
步骤101，在柔性基板上形成金属引线。
本实施例中，按照常规工艺形成柔性基板201，由柔性基板201上显示区的第一或第二金属层形成金属引线202，如图2所示的形成有金属引线的柔性基板。
步骤102，将所述柔性基板及所述金属引线进行弯折。
本实施例中，在柔性基板201上形成金属引线202后，将柔性基板201及金属引线202进行弯折，减小柔性显示器的边框尺寸，如图3a所示的弯折的柔性基板。金属引线有可能在弯折过程中发生断裂，或者在后续使用过 程中发生断裂，如图3b所示的弯折的柔性基板。金属引线203开裂会导致电路开路、设备失效等。
步骤103，在所述金属引线上形成导电膜层，所述导电膜层至少覆盖所述金属引线的弯折部分。
本实施例中，在金属引线202上形成导电膜层203，导电膜层至少覆盖金属引线202的弯折部分，如图4所示的柔性显示器的剖面示意图。由于在金属引线202的弯折部分形成了导电膜层203，即使金属引线202在弯折处发生断裂，导电膜层203仍可以导电，避免了由于金属引线202开裂导致的电路开路、设备失效等问题。根据本公开内容的一些实施例，采用电镀法或化学镀法在所述金属引线上形成导电膜层。
综上所述，本公开内容的实施例中，在柔性基板上形成金属引线；将柔性基板及金属引线进行弯折；在金属引线上形成导电膜层，导电膜层至少覆盖金属引线的弯折部分。由于在金属引线的弯折部分形成了导电膜层，即使金属引线弯折后开裂，导电膜层仍可以导电，避免了由于金属引线开裂导致的电路开路、设备失效等问题，在减小显示设备边框尺寸的同时，提高了显示设备的可靠性，从而解决了弯折区的材料开裂造成设备失效、可靠性下降的问题。
实施例二
参照图5，示出了本公开内容的实施例提供的一种柔性显示器的制备方法的步骤流程图。所述方法包括：
步骤301，在柔性基板上形成金属引线。
步骤302，将所述柔性基板及所述金属引线进行弯折。
以上步骤与实施例一中步骤101-102的内容类似，在此不再赘述。
步骤303，将所述金属引线的弯折部分浸入化学溶液，其中所述化学溶液包括金属盐、还原剂。
本实施例中，采用化学镀法在金属引线202上形成导电膜层203，具体地，将金属引线202的弯折部分浸入化学溶液中，如图6示出的金属引线的弯折部分浸入化学溶液的示意图。可选地，可以将金属引线全部浸入化学溶 液中。
步骤304，所述化学溶液中的所述金属盐与所述还原剂发生还原反应在所述金属引线的弯折部分的表面形成导电膜层。
本实施例中，化学溶液包括金属盐和还原剂，金属盐和还原剂发生还原反应，在金属引线202的弯折部分的表面形成导电膜层203。
根据本公开内容的一些实施例，所述金属盐包括硫酸铜、氯化铜、硝酸铜中的一种或多种。当采用化学镀法在金属引线202的弯折部分镀铜时，化学溶液中的金属盐为金属铜盐，可以选用硫酸铜、氯化铜、硝酸铜中的一种或多种。
根据本公开内容的一些实施例，所述化学溶液中铜离子浓度为2.5g/L～10g/L。当化学溶液中的金属盐为金属铜盐时，控制化学溶液中的铜离子浓度为2.5g/L～10g/L，从而控制还原反应速度以及形成的导电膜层203的厚度。
根据本公开内容的一些实施例，所述还原剂包括甲醛、次磷酸盐中的一种或多种。
根据本公开内容的一些实施例，所述化学溶液还包括络合剂，所述络合剂包括三乙醇胺、酒石酸中的一种或多种。化学溶液中的络合剂起到稳定镀液和细化镀层晶粒的作用，使形成的导电膜层203厚度均匀。
根据本公开内容的一些实施例，所述化学溶液还包括pH调节剂，所述pH调节剂包括氢氧化钠、氢氧化钾、硫酸中的一种，或氢氧化钠和氢氧化钾的混合物。
根据本公开内容的一些实施例，所述导电膜层的厚度为0.2μm～10μm。
根据本公开内容的一些实施例，所述导电膜层包括镍、金、银、锡、铜中的一种金属或多种金属，或包括镍、金、银、锡、铜中的两种或更多种金属形成的一种或多种合金。化学镀法还可以在金属引线202上镀镍、金、银、锡、铜等中的一种金属或多种金属，或者这些金属中的两种或更多种的合金，本公开内容的实施例对此不作详细限定，可以根据实际情况进行设置。
综上所述，本公开内容的实施例中，在柔性基板上形成金属引线；将柔性基板及金属引线进行弯折；将金属引线的弯折部分浸入化学溶液；化学溶液中的金属盐与还原剂发生还原反应在金属引线的弯折部分的表面形成导 电膜层。由于在金属引线的弯折部分形成导电膜层，即使金属引线弯折后开裂，导电膜层仍可以导电，避免了由于金属引线开裂导致的电路开路、设备失效等问题，在减小显示设备边框尺寸的同时，提高了显示设备的可靠性，从而解决了弯折区的材料开裂造成设备失效、可靠性下降的问题。
进一步的，采用化学镀法形成导电膜层，工艺设备简单，导电膜层的厚度均匀，性能好。
实施例三
参照图4，示出了本公开内容的实施例提供的一种柔性显示器。所述柔性显示器包括：
柔性基板201；
形成在所述柔性基板201上的金属引线202，所述金属引线202可以随所述柔性基板201弯折设置；
导电膜层203，所述导电膜层203形成在所述金属引线202的外表面上并且至少覆盖所述金属引线201的可弯折部分。
根据本公开内容的一些实施例，所述导电膜层203完全覆盖所述金属引线202的外表面。
根据本公开内容的一些实施例，所述导电膜层203的厚度为0.2μm～10μm。
根据本公开内容的一些实施例，所述导电膜层203为由选自镍、金、银、锡、铜中的一种金属或多种金属构成，或由选自镍、金、银、锡、铜中的两种或更多种金属形成的一种合金或多种合金构成。
综上所述，本公开内容实施例中，柔性显示器包括柔性基板和形成在柔性基板上的金属引线，金属引线可以随柔性基板弯折设置；金属引线的外表面上形成有导电膜层，导电膜层至少覆盖金属引线的可弯折部分。由于在金属引线的可弯折部分形成了导电膜层，即使金属引线弯折后开裂，导电膜层仍可以导电，避免了由于金属引线开裂导致的电路开路、设备失效等问题，在减小显示设备边框尺寸的同时，提高了显示设备的可靠性，从而解决了弯折区的材料开裂造成设备失效、可靠性下降的问题。
实施例四
本公开内容的实施例提供的一种显示设备，所述显示设备包含实施例三所述的柔性显示器。
综上所述，本公开内容的实施例中，显示设备包含柔性显示器，柔性显示器包括柔性基板和形成在柔性基板上的金属引线，金属引线可以随柔性基板弯折设置；金属引线的外表面上形成有导电膜层，导电膜层至少覆盖金属引线的可弯折部分。由于在金属引线的可弯折部分形成了导电膜层，即使金属引线弯折后开裂，导电膜层仍可以导电，避免了由于金属引线开裂导致的电路开路、设备失效等问题，在减小显示设备边框尺寸的同时，提高了显示设备的可靠性，从而解决了弯折区的材料开裂造成设备失效、可靠性下降的问题。
本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、商品或者设备中还存在另外的相同要素。
以上对本公开内容所提供的一种柔性显示器的制备方法、柔性显示器和显示设备，进行了详细介绍，本文中应用了具体个例对本公开内容的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本公开内容的方法及其核心思想；同时，对于本领域的一般技术人员，依据本公开内容的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内 容不应理解为对本公开内容的限制。

Claims (15)

  1. 一种柔性显示器的制备方法，所述方法包括：
    在柔性基板上形成金属引线；
    将所述柔性基板及所述金属引线进行弯折；
    在所述金属引线上形成导电膜层，所述导电膜层至少覆盖所述金属引线的弯折部分。
  2. 根据权利要求1所述的方法，其中所述在所述金属引线上形成导电膜层，包括：
    采用电镀法或化学镀法在所述金属引线上形成导电膜层。
  3. 根据权利要求2所述方法，其中所述采用化学镀法在所述金属引线上形成导电膜层，包括：
    将所述金属引线的弯折部分浸入化学溶液，其中所述化学溶液包括金属盐、还原剂；
    所述化学溶液中的所述金属盐与所述还原剂发生还原反应在所述金属引线的弯折部分的表面形成导电膜层。
  4. 根据权利要求3所述的方法，其中所述金属盐包括硫酸铜、氯化铜、硝酸铜中的一种或多种。
  5. 根据权利要求4所述的方法，其中所述化学溶液中铜离子浓度约为2.5g/L～10g/L。
  6. 根据权利要求3所述的方法，其中所述还原剂包括甲醛、次磷酸盐中的一种或多种。
  7. 根据权利要求3所述的方法，其中所述化学溶液还包括络合剂，所述络合剂包括三乙醇胺、酒石酸中的一种或多种。
  8. 根据权利要求3所述的方法，其中所述化学溶液还含有pH调节剂，所述pH调节剂包括氢氧化钠、氢氧化钾、硫酸中的一种，或氢氧化钠和氢氧化钾的混合物。
  9. 根据权利要求1所述的方法，其中所述导电膜层的厚度约为0.2μm ～10μm。
  10. 根据权利要求1所述的方法，其中所述导电膜层包括镍、金、银、锡、铜中的一种金属或多种金属，或包括镍、金、银、锡、铜中的两种或更多种金属形成的一种或多种合金。
  11. 一种柔性显示器，所述柔性显示器包括：
    柔性基板；
    金属引线，所述金属引线形成在所述柔性基板上并且随所述柔性基板弯折设置；和
    导电膜层，所述导电膜层形成在所述金属引线的外表面上并且至少覆盖所述金属引线的可弯折部分。
  12. 根据权利要求11所述的柔性显示器，其中所述导电膜层完全覆盖所述金属引线的外表面。
  13. 根据权利要求11所述的柔性显示器，其中所述导电膜层的厚度约为0.2μm～10μm。
  14. 根据权利要求11所述的柔性显示器，其中所述导电膜层包括镍、金、银、锡、铜中的一种金属或多种金属，或包括镍、金、银、锡、铜中的两种或更多种金属形成的一种或多种合金。
  15. 一种显示设备，所述显示设备包含权利要求11-14任一项所述的柔性显示器。
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