WO2019127779A1 - 一种柔性显示器的制备方法及柔性显示器 - Google Patents

一种柔性显示器的制备方法及柔性显示器 Download PDF

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Publication number
WO2019127779A1
WO2019127779A1 PCT/CN2018/073943 CN2018073943W WO2019127779A1 WO 2019127779 A1 WO2019127779 A1 WO 2019127779A1 CN 2018073943 W CN2018073943 W CN 2018073943W WO 2019127779 A1 WO2019127779 A1 WO 2019127779A1
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Prior art keywords
substrate
flexible display
adhesive
water
oxygen barrier
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PCT/CN2018/073943
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English (en)
French (fr)
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于承忠
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深圳市华星光电半导体显示技术有限公司
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Priority to US16/032,084 priority Critical patent/US10515569B2/en
Publication of WO2019127779A1 publication Critical patent/WO2019127779A1/zh

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating 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
    • G09F9/301Indicating 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

Definitions

  • the present invention relates to the field of flexible display preparation technologies, and in particular, to a method for preparing a flexible display and a flexible display.
  • the display substrate of the flexible display In the preparation process of the display substrate of the flexible display, it is usually required to bond a flexible substrate on a hard and flat carrier substrate, and then form a film layer constituting the display structure on the flexible substrate, etc., and finally complete the flexibility of the fabrication.
  • the display substrate is peeled off from the carrier substrate.
  • the position and flatness of the flexible display substrate need to be accurately fixed during the manufacturing process of the display component. This requires that the flexible substrate can be firmly combined with the carrier substrate, and when the flexible display substrate is peeled off from the carrier substrate after fabrication, the flexible substrate is required to be easily detached from the carrier substrate.
  • the inventor of the present application found in the long-term development process that in the existing flexible display preparation method, the firm bonding of the flexible substrate and the carrier substrate cannot be ensured at the same time, and both of them are easily peeled off after the completion of fabrication, and the product quality is poor.
  • the technical problem to be solved by the present invention is to provide a flexible display display method and a flexible display, which can firmly bond the flexible display body and the second substrate, and facilitate separation from the second substrate after the flexible display body is completed. Simplify the process and improve product quality.
  • one technical solution adopted by the present invention is to provide a method for preparing a flexible display.
  • the method comprises:
  • first substrate comprising opposite first and second faces
  • the adhesive comprising: a silicone modified polyurethane prepolymer, a hydrophilic plasticizer, a mixed filler And a silane coupling agent;
  • the hydrophilic plasticizer is polypropylene glycol; the hydrophilic plasticizer is polypropylene glycol 2000; the mixed filler comprises: nano calcium carbonate and heavy calcium carbonate; the thickness of the adhesive layer is 3 -10 microns;
  • the material of the first substrate is polyimide, polyethylene naphthalate, polyethylene terephthalate, fiber reinforced plastic, polyether sulfone resin, polyarylate or polycarbonate.
  • the second substrate is one of a glass substrate, a metal substrate, a quartz substrate, or an organic substrate.
  • another technical solution adopted by the present invention is to provide a method for preparing a flexible display.
  • the method comprises:
  • first substrate comprising opposite first and second faces
  • a binder on the first side of the first substrate to form an adhesive layer comprising: a silicone-modified polyurethane prepolymer, a hydrophilic plasticizer, a mixed filler, and a silane couple Joint agent
  • the first substrate of the flexible display is separated from the second substrate by moisture swelling to obtain a flexible display.
  • another technical solution adopted by the present invention is to provide a flexible display.
  • the flexible display is prepared by the method.
  • the invention has the beneficial effects that the first surface of the first substrate is bonded to the second substrate by the adhesive and the flexibility is formed on the second surface of the first substrate.
  • the display body firmly bonds the flexible display to the second substrate; at the same time, the adhesive has the property of moisture absorption and swelling, and the internal structure of the adhesive is destroyed after the water absorption, with the first substrate and the second
  • the bonding force of the substrate is weakened, and the first substrate and the second substrate of the flexible display are easily and efficiently peeled off, which can simplify the process flow and improve product quality.
  • FIG. 1 is a schematic flow chart of an embodiment of a method for preparing a flexible display according to the present invention
  • FIG. 2 is a schematic view showing a first state of a flexible display of the present invention in a preparation process
  • step S400 in FIG. 1 is a schematic flow chart of an embodiment of step S400 in FIG. 1;
  • FIG. 4 is a schematic view showing a second state of the flexible display of the present invention in a preparation process
  • FIG. 5 is a schematic view showing a third state of the flexible display of the present invention in a preparation process
  • FIG. 6 is a schematic view showing a fourth state of the flexible display of the present invention in a preparation process
  • step S300 in FIG. 1 is a schematic flow chart of an embodiment of step S300 in FIG. 1;
  • FIG. 8 is a schematic structural view of an embodiment of a flexible display of the present invention.
  • FIG. 1 is a schematic flow chart of an embodiment of a method for preparing a flexible display according to the present invention
  • FIG. 2 is a schematic view showing a first state of the flexible display of the present invention in a preparation process.
  • the method includes:
  • Step S100 providing a first substrate, the first substrate comprising opposite first and second faces;
  • Step S200 applying a binder on the first side of the first substrate to form an adhesive layer, the binder comprising: a silicone-modified polyurethane prepolymer, a hydrophilic plasticizer, a mixed filler, and A silane coupling agent;
  • an adhesive is applied on the first surface 11 of the first substrate 10 to form an adhesive layer 20, which may cover the entire area of the first surface 11, or may be guaranteed
  • a partial area of the first face 11 is covered, for example, a central position and four edge positions of the first face 11 are applied.
  • the manner of covering a portion of the first face 11 can reduce the amount of binder and reduce the cost, and can also prevent excess binder from overflowing during extrusion and affect product quality.
  • the binder comprises: a silicone-modified polyurethane prepolymer, a hydrophilic plasticizer, a mixed filler, and a silane coupling agent.
  • the silicon-modified polyurethane prepolymer is used as a raw material, a hydrophilic plasticizer, a mixed filler and a silane coupling agent are added, and the binder is obtained under the action of a catalyst. Therefore, the first substrate coated with the adhesive can bond other structures.
  • Step S300 attaching the first substrate to the second substrate through the adhesive on the first surface
  • the second substrate 30 is attached to the adhesive layer 20, and the first substrate 10 and the second substrate 30 are attached together.
  • the contact faces of the first substrate 10 and the second substrate 30 are different in size, and are firmly bonded together by extrusion and/or heating.
  • Step S400 forming a flexible display body on the second surface of the first substrate
  • the first substrate 10 and the second substrate 20 bonded together are placed on the screen, and the second substrate 20 is in contact with the plane, and is formed on the second surface 12 of the first substrate 10.
  • the flexible display body 40 includes a TFT array layer, an OLED layer, an encapsulation layer, and the like.
  • Step S500 separating the first substrate of the flexible display from the second substrate by means of moisture absorption and swelling to obtain a flexible display.
  • the adhesive since the first substrate 10 and the second substrate 30 are connected by the adhesive layer 20, the adhesive has the property of moisture absorption and swelling, and can absorb moisture and swell after contact with water, so that the adhesive is sticky.
  • the internal structure of the bonding agent is broken, and the bonding force with the first substrate 10 and the second substrate 30 is weakened, so that the first substrate 10 and the second substrate 30 of the flexible display are peeled off quickly and efficiently. Further, the obtained first substrate 10 and the flexible display body 40 thereon are cut to obtain a flexible display of a desired size.
  • the first surface 11 of the first substrate 10 and the second substrate 30 are bonded together by an adhesive, and the flexible display body 40 is formed on the second surface 12 of the first substrate 10.
  • the flexible display is firmly bonded to the second substrate 30; at the same time, the adhesive has the property of moisture absorption and swelling, and the internal structure of the adhesive is destroyed after the water absorption, and the first substrate 10 and the second substrate 30 are The weakening of the bonding force facilitates rapid and efficient peeling of the first substrate 10 and the second substrate 30 of the flexible display body, which simplifies the process flow and improves product quality.
  • the hydrophilic plasticizer is polypropylene glycol; the hydrophilic plasticizer is polypropylene glycol 2000; since the hydrophilic plasticizer has hygroscopic swelling properties, correspondingly, by the hydrophilic
  • the binder prepared by the plasticizer is polypropylene glycol. After the water absorption, the hydrophilic plasticizer is destroyed by the structure of the polypropylene glycol, and the bonding effect of the binder is weakened, so that the binder is bonded.
  • a substrate 10 and the second substrate 30 facilitate peeling.
  • the mixed filler comprises: nanometer calcium carbonate and heavy calcium carbonate; the binder layer has a thickness of 3-10 microns, such as 3 microns, 5 microns, 7 microns or 10 microns.
  • the thickness of the adhesive layer is too large, which not only increases the cost, but also causes unnecessary waste. Excessive adhesive may overflow during the extrusion process, which affects the quality of the product.
  • the thickness of the adhesive layer 20 is too small, so that the first substrate 10 and the second substrate 30 are not firmly bonded, and the positioning accuracy of each component disposed on the first substrate 10 is affected. Therefore, it is important to select a suitable thickness of the adhesive layer 20.
  • the adhesive layer 20 has a thickness of 5 microns.
  • the silicone modified polyurethane prepolymer has a mass percentage of from 25% to 30%, such as 25%, 26%, 27%, 28%, 29% or 30%.
  • the polypropylene glycol 2000 has a mass percentage of 15% to 20%, such as 15%, 16%, 17%, 18%, 19% or 20%.
  • the nano calcium carbonate and the heavy calcium carbonate have a mass percentage of 50% to 60%, such as 50%, 52%, 54%, 56%, 58% or 60%, further, wherein the nano calcium carbonate
  • the mass percentage is from 0 to 50%, such as 0, 10%, 20%, 30%, 40% or 50%.
  • the silane coupling agent has a mass percentage of 0 to 2%, such as 0, 0.5%, 1%, 1.5% or 2%.
  • the binder further includes an antioxidant having a mass percentage of 0 to 1%, such as 0, 0.4%, 0.6%, 0.8% or 1%, and the antioxidant may be butylated toluene or the like.
  • the different components of the adhesive are matched to each other, and the first substrate 10 and the second substrate 30 can be firmly bonded together, and the second substrate 30 can be utilized by utilizing the hygroscopic swelling property of the polypropylene glycol 2000. Stripping with the flexible display not only simplifies the production process but also improves product quality.
  • FIG. 3 is a schematic flowchart of an implementation manner of step S400 in FIG. 1 , where the method includes:
  • Step S410 forming a planarization layer and/or a water and oxygen barrier layer on the second surface of the first substrate;
  • a water and oxygen barrier layer 50 may be formed between the flexible display body 40 and the second surface 12 of the first substrate 10, or may be a planarization layer 50, or both, according to Actual production is configured.
  • the water oxygen barrier layer is an alternating structure formed of an organic material/inorganic material, or an alternate structure formed of an inorganic material/inorganic material.
  • the alternating structure of the organic material/inorganic material is parylene/SiN x /parylene/SiN x ; the inorganic material/inorganic material has an alternating structure of SiN x /SiO 2 /SiN x , and the water oxygen barrier layer can avoid impurities such as moisture and dust.
  • the planarization layer is an organic material such as polyimide.
  • the purpose of adding the planarization layer is mainly to provide a smooth surface when the first substrate material is rough, to meet the requirements for product quality, such as OLEDs required surface.
  • the roughness is less than 5 nm.
  • Step S420 forming the flexible display body on the planarization layer and/or the water-oxygen barrier layer;
  • the planarization layer and/or the water-oxygen barrier layer 50 is attached on the second surface 12 of the first substrate 10, or the planarization layer and/or the water-oxygen barrier layer 50 may surround the The first substrate 10, and further, the planarization layer and/or the water-oxygen barrier layer 50 surrounds the first substrate 10 and the adhesive layer 20.
  • the surrounding structure is formed to better prevent moisture, dust and the like from entering the flexible display body, which is beneficial to prolonging the service life of the flexible display.
  • the first substrate 10 and the second substrate 30 are separated by moisture swelling, and before the tape is obtained, the adhesive layer is partially or completely opened through the opening.
  • the second substrate and the flexible display are peeled off by exposure to contact with water and moisture swell.
  • the planarization layer and/or the water-oxygen barrier layer 50 of the edge of the first substrate 10 are cut to form a slit 51 inclined at an angle to the surface of the first substrate 10.
  • the slit 51 exposes the adhesive layer 20 in whole or in part, and is capable of coming into contact with water and absorbing moisture and swelling to peel the second substrate 30 from the flexible display.
  • the angle of the inclination is 30-60 degrees, such as 30 degrees, 40 degrees, 50 degrees, and 60 degrees.
  • the opening 31 of the second substrate 30 is perpendicular to the extending direction of the second substrate 30 , and the slit 31 exposes the adhesive layer 20 in whole or in part.
  • the second substrate 30 can be peeled off from the flexible display by contact with water and causing moisture absorption and swelling.
  • the above two openings can also be provided at the same time to obtain a better moisture absorption and swelling effect.
  • the first substrate 10 and the second substrate 30 are separated by moisture swelling to obtain the flexible display, specifically comprising: injecting water into the exposed portion of the adhesive layer through the opening.
  • the first substrate 10 is separated from the second substrate 30.
  • the second substrate 30 and the flexible display assembly (including the second substrate 30, the adhesive layer 20, and the flexible display body 40) are immersed in water to make the first substrate 10 and the second substrate
  • the substrate 20 is separated to obtain the flexible display.
  • the adhesive layer By immersing the combination of the second substrate 30 and the flexible display in water, the adhesive layer can be sufficiently brought into contact with water to rapidly absorb moisture and swell, thereby increasing the degree and speed, and can be more easily
  • the second substrate 30 and the first substrate 10 are separated.
  • the temperature of the water is 40 to 60 ° C, for example, 40 ° C, 50 ° C or 60 ° C, using warm water to accelerate the rate of moisture absorption and swelling of the adhesive layer, further improving the second substrate 30 and the first The speed at which the substrate 10 separates the process.
  • the soaking time is 1-20 minutes, such as 1 minute, 5 minutes, 10 minutes, 15 minutes or 20 minutes.
  • the higher the temperature of the water the shorter the processing time.
  • the second substrate 30 is provided with a porous structure penetrating the second substrate; the through hole 31 is evenly distributed on the second substrate, which facilitates the adhesive layer in the process of moisture absorption and swelling. Adequate contact with water rapidly destroys the structure of the adhesive and accelerates the peeling speed of the first substrate 10 and the second substrate 30.
  • FIG. 7 is a schematic flowchart of an implementation manner of step S300 in FIG.
  • Step S310 sealing the porous structure on the second substrate
  • step S310 when the through hole 31 is sealed on the second substrate 30, different sealing methods and sealing materials may be used as long as the sealing function is provided and the first substrate 10 is provided with a flat surface. A firm contact surface is all right.
  • Step S320 attaching the first substrate to the second substrate sealed by the porous structure by the adhesive on the first surface.
  • the method includes: attaching the first substrate The porous structure on the two substrates 30 is deseamed. After the desealing, the through hole 31 exposes the adhesive layer 20, and is capable of coming into contact with water to cause moisture wicking to peel off the second substrate 30 from the flexible display.
  • the first substrate is a flexible substrate
  • the material of the flexible substrate is polyimide, polyethylene naphthalate, polyethylene terephthalate, fiber reinforced plastic, polyether.
  • One or more of a sulfone resin, a polyarylate or a polycarbonate, the flexible substrate can make the bending process of the prepared flexible display body more flexible.
  • the second substrate 30 is a hard substrate, and the material of the hard substrate is one of a glass substrate, a metal substrate, a quartz substrate or an organic substrate, and the hard second substrate 30 can Providing a rigid and flat support surface for the flexible first substrate 10 attached to the second substrate 30 makes the positioning of other layered structures formed on the flexible first substrate 10 more accurate and reliable.
  • the flexible display prepared by the flexible display 1 has a simple process flow, which is beneficial to reducing the production cost of the flexible display and improving product quality.
  • the present invention discloses a method of manufacturing a flexible display and a flexible display, the method comprising: applying an adhesive on a first side of a first substrate to form an adhesive layer; a binder, the first substrate is attached to the second substrate; a flexible display body is formed on the second surface of the first substrate; and the first substrate and the second substrate are separated by moisture absorption and swelling, thereby obtaining A flexible display of the first substrate.
  • the present invention can firmly bond the flexible display to the second substrate, and after the completion of the fabrication, facilitates separation from the second substrate to improve product quality.

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Abstract

本发明公开了一种柔性显示器的制备方法及柔性显示器,该方法包括,在第一基板的第一面上涂覆粘结剂以形成粘结剂层;通过第一面上的粘结剂,将第一基板贴附在第二基板上;在第一基板的第二面上形成柔性显示器本体;通过吸湿溶胀的方式,使第一基板与第二基板分离,得到柔性显示器。通过上述方式,本发明能够缩短柔性显示器的制备周期,并提高产品质量。

Description

一种柔性显示器的制备方法及柔性显示器 【技术领域】
本发明涉及柔性显示器制备技术领域,特别是涉及一种柔性显示器的制备方法及柔性显示器。
【背景技术】
近年来,柔性显示器因具有耐冲击、抗震能力强,重量轻、体积小、携带更加方便等诸多优点,得了广泛的应用。
在柔性显示器的显示基板的制备过程中,通常需要在一个坚硬而平坦的承载基板上粘合一层柔性基底,再在柔性基底上形成构成显示结构的各膜层等,最后把制作完成的柔性显示基板从承载基板上剥离下来。为避免电子元件之间错位,显示组件制作过程中,需要精确固定柔性显示基板的位置和平坦度。这就要求柔性基底能够稳固地与承载基板相结合,而在制作完成之后把柔性显示基板从承载基板上剥离下来时,又要求柔性基底能够很容易地脱离承载基板。
本申请的发明人在长期的研发过程中发现,现有的柔性显示器制备方法中,不能同时保证柔性基底与承载基板的牢固结合及二者在制作完成之后便于剥离,产品质量差。
【发明内容】
本发明主要解决的技术问题是提供一种柔性显示器的制备方法及柔性显示器,能够使柔性显示器本体与第二基板牢固结合,且在该柔性显示器本体制作完成之后,便于与该第二基板剥离,简化工艺流程,提高产品质量。
为解决上述技术问题,本发明采用的一个技术方案是:提供一种柔性显示器的制备方法。
其中,该方法包括:
提供第一基板,所述第一基板包括相对设置的第一面和第二面;
在所述第一基板的所述第一面上涂覆粘结剂以形成粘结剂层,所述粘结剂包括:有机硅改性聚氨酯预聚物、亲水性增塑剂、混合填料以及硅烷偶联剂;
通过所述第一面上的所述粘结剂,将所述第一基板贴附在第二基板上;
在所述第一基板的所述第二面上形成柔性显示器本体;
通过吸湿溶胀的方式,使所述柔性显示器的所述第一基板与所述第二基板分离,得到柔性显示器;
所述亲水性增塑剂为聚丙二醇;所述亲水性增塑剂为聚丙二醇2000;所述混合填料包括:纳米碳酸钙和重质碳酸钙;所述粘结剂层的厚度为3-10微米;
所述第一基板的材料为聚酰亚胺、聚萘二甲酸乙二醇酯、聚对苯二甲酸乙二醇酯、纤维强化塑料、聚醚砜树脂、聚芳酯或聚碳酸酯中的一种或多种;所述第二基板为玻璃基板、金属基板、石英基板或有机基板中的其中一种。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种柔性显示器的制备方法。
其中,该方法包括:
提供第一基板,该第一基板包括相对设置的第一面和第二面;
在该第一基板的该第一面上涂覆粘结剂以形成粘结剂层,该粘结剂包括:有机硅改性聚氨酯预聚物、亲水性增塑剂、混合填料以及硅烷偶联剂;
通过该第一面上的该粘结剂,将该第一基板贴附在第二基板上;
在该第一基板的该第二面上形成柔性显示器本体;
通过吸湿溶胀的方式,使该柔性显示器的该第一基板与该第二基板分离,得到柔性显示器。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种柔性显示器。
其中,该柔性显示器采用该方法制备。
本发明的有益效果是:区别于现有技术的情况,本发明通过粘结剂将第一基板的第一面与第二基板粘接在一起,并在第一基板的第二面上形成柔性显示 器本体,使该柔性显示器与该第二基板牢固的粘接在一起;同时,该粘结剂具有吸湿溶胀的性质,在吸水后粘结剂的内部结构被破坏,与第一基板和第二基板的结合力减弱,便于快速高效的将该柔性显示器的第一基板与第二基板剥离,能够简化工艺流程,并提高产品质量。
【附图说明】
图1是本发明柔性显示器的制备方法一实施方式的流程示意图;
图2是本发明柔性显示器在制备过程中的第一状态示意图;
图3是图1中步骤S400一实施方式的流程示意图;
图4是本发明柔性显示器在制备过程中的第二状态示意图;
图5是本发明柔性显示器在制备过程中的第三状态示意图;
图6是本发明柔性显示器在制备过程中的第四状态示意图;
图7是图1中步骤S300一实施方式的流程示意图;
图8是本发明柔性显示器一实施方式的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图,对本发明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发明一部分实施例,而不是全部实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
参阅图1和图2,图1是本发明柔性显示器的备方法一实施方式的流程示意图,图2是本发明柔性显示器在制备过程中的第一状态示意图。该方法包括:
步骤S100:提供第一基板,该第一基板包括相对设置的第一面和第二面;
步骤S200:在该第一基板的第一面上涂覆粘结剂以形成粘结剂层,该粘结剂包括:有机硅改性聚氨酯预聚物、亲水性增塑剂、混合填料以及硅烷偶联剂;
在该步骤S200中,在该第一基板10的第一面11上涂覆粘结剂以形成粘结 剂层20,该粘结剂可以覆盖该第一面11的整个区域,也可以在保证粘接效果的前提下,覆盖该第一面11的部分区域,如,涂覆该第一面11的中心位置和四个边缘位置。覆盖该第一面11的部分区域的方式能够减少粘结剂的用量,降低成本,也可以避免过量的粘结剂在挤压的过程中溢出,影响产品质量。
进一步的,该粘结剂包括:有机硅改性聚氨酯预聚物、亲水性增塑剂、混合填料以及硅烷偶联剂。其中,以该机硅改性聚氨酯预聚物为原料,添加亲水性增塑剂、混合填料和硅烷偶联剂等,在催化剂作用下,制得该粘结剂。因此,涂覆了该粘结剂的第一基板能够粘接其它结构。
步骤S300:通过该第一面上的该粘结剂,将该第一基板贴附在第二基板上;
在该步骤S300中,该第二基板30贴附在粘结剂层20上,使该第一基板10与该第二基板30贴附在一起。在一个实施方式中,该第一基板10与该第二基板30的接触面尺寸不同,且通过挤压和/或加热等方式牢固的粘贴在一起。
步骤S400:在该第一基板的该第二面上形成柔性显示器本体;
在该步骤S400中,将粘接在一起的第一基板10和第二基板20放置在屏幕上,且该第二基板20与该平面接触,在该第一基板10的第二面12上形成柔性显示器本体40,该柔性显示器本体40包括TFT阵列层、OLED层及封装层等。
步骤S500:通过吸湿溶胀的方式,使该柔性显示器的该第一基板与该第二基板分离,得到柔性显示器。
在该步骤S500中,由于该第一基板10与该第二基板30通过该粘结剂层20连接,而该粘结剂具有吸湿溶胀的性质,能够在与水接触后发生吸湿溶胀,使得粘结剂的内部结构被破坏,与第一基板10和第二基板30的结合力减弱,便于快速高效的将该柔性显示器的第一基板10与第二基板30剥离。进一步的,对得到的该第一基板10及其上的该柔性显示器本体40进行切割,得到所需尺寸的柔性显示器。
在上述实施方式中,通过粘结剂将第一基板10的第一面11与第二基板30粘接在一起,并在第一基板10的第二面12上形成柔性显示器本体40,使该柔 性显示器与该第二基板30牢固的粘接在一起;同时,该粘结剂具有吸湿溶胀的性质,在吸水后粘结剂的内部结构被破坏,与第一基板10和第二基板30的结合力减弱,便于快速高效的将该柔性显示器本体的第一基板10与第二基板30剥离,能够简化工艺流程,并提高产品质量。
在一个实施方式中,该亲水性增塑剂为聚丙二醇;该亲水性增塑剂为聚丙二醇2000;由于该亲水性增塑剂具有吸湿溶胀的性质,相应的,由该亲水性增塑剂为聚丙二醇制备的粘结剂在吸水后因该亲水性增塑剂为聚丙二醇的结构破坏,该粘结剂的粘接作用减弱,使该粘结剂粘接的该第一基板10和该第二基板30便于剥离。进一步的,该混合填料包括:纳米碳酸钙和重质碳酸钙;该粘结剂层的厚度为3-10微米,如,3微米、5微米、7微米或10微米。粘结剂层的厚度过大,不仅成本提高,造成不必要的浪费,过量的粘结剂还可能在挤压的过程中溢出,影响产品质量。而粘结剂层20的厚度过小容易造成该第一基板10与该第二基板30粘接不牢固,影响设置在该第一基板10上的各元件的定位准确度。因此,选择合适的粘结剂层20的厚度较为重要。在一个实施方式中,该粘结剂层20的厚度为5微米。
在一个实施方式中,该有机硅改性聚氨酯预聚物的质量百分含量为25%~30%,如,25%、26%、27%、28%、29%或30%。该聚丙二醇2000的质量百分含量为15%~20%,如,15%、16%、17%、18%、19%或20%。该纳米碳酸钙和重质碳酸钙的质量百分含量为50%~60%,如,50%、52%、54%、56%、58%或60%,进一步的,其中,该纳米碳酸钙的质量百分含量为0~50%,如,0、10%、20%、30%、40%或50%。该硅烷偶联剂的质量百分含量为0~2%,如,0、0.5%、1%、1.5%或2%。该粘结剂还包括质量百分含量为0~1%的抗氧化剂,如,0、0.4%、0.6%、0.8%或1%,该抗氧化剂可以为丁基化基甲苯等。该粘结剂中不同组分相互配合,不仅能够将该第一基板10与该第二基板30牢固的粘接在一起,并利用该聚丙二醇2000的吸湿溶胀的性质,将该第二基板30与该柔性显示器剥离,不仅简化了生产工艺,也提高了产品质量。
在一个实施方式中,请参考图3和图4,图3是图1中步骤S400一实施方式的流程示意图,该方法包括:
步骤S410:在该第一基板的该第二面上形成平坦化层和/或水氧阻隔层;
在该步骤S410中,该柔性显示器本体40与该第一基板10的该第二面12之间可以形成水氧阻隔层50,也可以是平坦化层50,还可以两者兼有,可以根据实际生产进行配置。该水氧阻隔层为有机材料/无机材料形成的交替结构,或者无机材料/无机材料形成的交替结构。该有机材料/无机材料交替结构为parylene/SiN x/parylene/SiN x;,该无机材料/无机材料交替结构为SiN x/SiO 2/SiN x,该水氧阻隔层能够避免水分、灰尘等杂质进入该柔性显示器本体,造成该柔性显示器使用寿命缩短的问题。该平坦化层为聚酰亚胺等有机材料,加入平坦化层目的主要是用于在该第一基板材料较为粗糙时,提供一个较为光滑的表面,满足对产品质量的要求,如OLEDs要求表面粗糙度小于5nm。
步骤S420:在该平坦化层和/或水氧阻隔层上形成该柔性显示器本体;
在该步骤S420中,该平坦化层和/或水氧阻隔层50贴附在该第一基板10的第二面12上,也可以是该平坦化层和/或水氧阻隔层50包围该第一基板10,更进一步的,该平坦化层和/或水氧阻隔层50包围该第一基板10及粘结剂层20。形成该包围结构,更好的避免水汽、灰尘等杂质进入该柔性显示器本体,有利于延长该柔性显示器的使用寿命。
在一个实施方式中,该通过吸湿溶胀的方式,使该第一基板10与该第二基板30分离,得到该带该柔性显示器之前,包括:通过开口的方式使该粘结剂层部分或全部暴露,进而能够与水接触并发生吸湿溶胀而使该第二基板与该柔性显示器剥离。在一个实施方式中,请参考图5,对该第一基板10的边缘的平坦化层和/或水氧阻隔层50进行切割,以形成与该第一基板10的表面成倾角的切口51,该切口51使该粘结剂层20全部或部分暴露,进而能够与水接触并发生吸湿溶胀而使该第二基板30与该柔性显示器剥离。进一步的,该倾角的角度为30-60度,如,30度、40度、50度和60度。在另一个实施方式中,请参考 图6,通过垂直于该第二基板30的延伸方向上贯通该第二基板30的开口31,该切口31使该粘结剂层20全部或部分暴露,进而能够与水接触并发生吸湿溶胀而使该第二基板30与该柔性显示器剥离。当然,也可同时设置上述两种开口,以获得更好的吸湿溶胀效果。
在一个实施方式中,通过吸湿溶胀的方式,使该第一基板10与该第二基板30分离,得到该柔性显示器,具体包括:通过该开口向该粘结剂层的暴露部分注水的方式使该第一基板10与该第二基板30分离。还可以是,将该第二基板30和该柔性显示器的结合体(包括第二基板30、粘结剂层20及柔性显示器本体40)放在水中浸泡,使该第一基板10与该第二基板20分离,得到该柔性显示器。
采用将该第二基板30和该柔性显示器的结合体放在水中浸泡的方式能够使该粘结剂层与水充分的接触,迅速进行吸湿溶胀,提高该的程度和速度,能够更容易的将该第二基板30和该第一基板10分离。进一步的,该水的温度为40~60℃,如,40℃、50℃或60℃,采用温水加快该粘结剂层进行吸湿溶胀的速度,进一步提高将该第二基板30和该第一基板10分离过程的速度。该浸泡时间为1-20分钟,如,1分钟、5分钟、10分钟、15分钟或20分钟。当然,对于同一第二基板30和该柔性显示器的结合体,水的温度越高,处理时间越短。
在另一个实施方式中,该第二基板30上设置有贯穿该第二基板的多孔结构;该贯穿孔31均匀分布在该第二基板上,有利于该粘结剂层在吸湿溶胀的过程中与水进行充分的接触,从而迅速破坏粘结剂的结构,加快该第一基板10与该第二基板30的剥离速度。
进一步的,请参考图7和图6,图7是图1中步骤S300一实施方式的流程示意图,该方法,包括:
步骤S310:将该第二基板上的该多孔结构密封;
在该步骤S310中,对该第二基板30上的该贯通孔31进行密封时,可以采用不同的密封方式及密封材料,只要能起到密封作用,且为该第一基板10提供 一个平坦、牢固的接触面即可。
步骤S320:通过该第一面上的该粘结剂,将该第一基板贴附在该多孔结构已密封的该第二基板。
进一步的,当该第二基板30为多孔结构时,该通过吸湿溶胀的方式,使该第一基板10与该第二基板30分离,得到该柔性显示器之前,包括:将贴附后的该第二基板30上的该多孔结构进行解密封。进行该解密封后,该贯通孔31使该粘结剂层20暴露,进而能够与水接触并发生吸湿溶胀而使该第二基板30与该柔性显示器剥离。
在一个实施方式中,该第一基板为柔性基板,该柔性基板的材料为聚酰亚胺、聚萘二甲酸乙二醇酯、聚对苯二甲酸乙二醇酯、纤维强化塑料、聚醚砜树脂、聚芳酯或聚碳酸酯中的一种或多种,采用该柔性基板能够使制备的柔性显示器本体的弯折过程更加灵活。在另一个实施方式中,该第二基板30为硬质基板,该硬质基板的材料为玻璃基板、金属基板、石英基板或有机基板中的其中一种,该硬质的第二基板30能够为贴附在该第二基板30上的柔性第一基板10提供一个坚固而平坦的支撑面,使在该柔性第一基板10上形成的其它层状结构定位更加准确可靠。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种柔性显示器。请参考图8,所述柔性显示器1采用上述方法制备的柔性显示器工艺流程简单,有利于降低该柔性显示器的生产成本,提高产品质量。
综上所述,本发明公开了一种柔性显示器的制备方法及柔性显示器,该方法包括,在第一基板的第一面上涂覆粘结剂以形成粘结剂层;通过第一面上的粘结剂,将第一基板贴附在第二基板上;在第一基板的第二面上形成柔性显示器本体;通过吸湿溶胀的方式,使第一基板与第二基板分离,得到带有第一基板的柔性显示器。通过上述方式,本发明能够使柔性显示器与第二基板牢固结合,且在制作完成之后,便于与第二基板剥离,提高产品质量。
以上所述仅为本发明的实施方式,并非因此限制本发明的专利范围,凡是 利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种柔性显示器的备方法,其中,所述方法包括:
    提供第一基板,所述第一基板包括相对设置的第一面和第二面;
    在所述第一基板的所述第一面上涂覆粘结剂以形成粘结剂层,所述粘结剂包括:有机硅改性聚氨酯预聚物、亲水性增塑剂、混合填料以及硅烷偶联剂;
    通过所述第一面上的所述粘结剂,将所述第一基板贴附在第二基板上;
    在所述第一基板的所述第二面上形成柔性显示器本体;
    通过吸湿溶胀的方式,使所述柔性显示器的所述第一基板与所述第二基板分离,得到柔性显示器;
    所述亲水性增塑剂为聚丙二醇;所述亲水性增塑剂为聚丙二醇2000;所述混合填料包括:纳米碳酸钙和重质碳酸钙;所述粘结剂层的厚度为3-10微米;
    所述第一基板的材料为聚酰亚胺、聚萘二甲酸乙二醇酯、聚对苯二甲酸乙二醇酯、纤维强化塑料、聚醚砜树脂、聚芳酯或聚碳酸酯中的一种或多种;所述第二基板为玻璃基板、金属基板、石英基板或有机基板中的其中一种。
  2. 根据权利要求1所述的方法,其特征在于,所述有机硅改性聚氨酯预聚物的质量百分含量为25~30%、所述聚丙二醇2000的质量百分含量为15%~20%、所述纳米碳酸钙和重质碳酸钙的质量百分含量为50%~60%,所述硅烷偶联剂的质量百分含量为0~2%;所述粘结剂还包括质量百分含量为0~1%的抗氧化剂。
  3. 根据权利要求1所述的方法,其特征在于,所述在所述第一基板的所述第二面上形成柔性显示器本体,包括:
    在所述第一基板的所述第二面上形成平坦化层和/或水氧阻隔层;
    在所述平坦化层和/或水氧阻隔层上形成所述柔性显示器本体;
    所述在所述第一基板的所述第二面上形成平坦化层和/或水氧阻隔层,包括:
    在所述第一基板的所述第二面上形成包围所述第一基板的所述平坦化层和/或水氧阻隔层。
  4. 根据权利要求3所述的方法,其特征在于,所述通过吸湿溶胀的方式, 使所述柔性显示器的所述第一基板与所述第二基板分离,得到柔性显示器之前,包括:
    在所述第一基板的边缘的所述平坦化层和/或水氧阻隔层进行切割,以形成与所述第一基板的表面成倾角的切口;所述倾角的角度为30-60度。
  5. 根据权利要求1所述的方法,其特征在于,所述通过吸湿溶胀的方式,使所述柔性显示器的所述第一基板与所述第二基板分离,得到柔性显示器,包括:
    将带有所述第一基板和所述第二基板的柔性显示器本体放在水中浸泡,使所述第一基板与所述第二基板分离,得到所述带有第一基板的所述柔性显示器本体;所述水的温度为40~60℃。
  6. 根据权利要求1所述的方法,其特征在于,所述第二基板上设置有贯穿所述第二基板的多孔结构;
    所述通过所述第一面上的所述粘结剂,将所述第一基板贴附在第二基板上,包括:
    将所述第二基板上的所述多孔结构密封;
    通过所述第一面上的所述粘结剂,将所述第一基板贴附在所述多孔结构已密封的所述第二基板。
  7. 根据权利要求6所述的方法,其特征在于,所述通过吸湿溶胀的方式,使所述柔性显示器的所述第一基板与所述第二基板分离,得到柔性显示器,包括:
    将贴附后的所述第二基板上的所述多孔结构进行解密封。
  8. 一种柔性显示器的备方法,其特征在于,所述方法包括:
    提供第一基板,所述第一基板包括相对设置的第一面和第二面;
    在所述第一基板的所述第一面上涂覆粘结剂以形成粘结剂层,所述粘结剂包括:有机硅改性聚氨酯预聚物、亲水性增塑剂、混合填料以及硅烷偶联剂;
    通过所述第一面上的所述粘结剂,将所述第一基板贴附在第二基板上;
    在所述第一基板的所述第二面上形成柔性显示器本体;
    通过吸湿溶胀的方式,使所述柔性显示器的所述第一基板与所述第二基板分离,得到柔性显示器。
  9. 根据权利要求8所述的方法,其特征在于,所述亲水性增塑剂为聚丙二醇;所述亲水性增塑剂为聚丙二醇2000;所述混合填料包括:纳米碳酸钙和重质碳酸钙;
  10. 根据权利要求8所述的方法,其特征在于,所述粘结剂层的厚度为3-10微米。
  11. 根据权利要求9所述的方法,其特征在于,所述有机硅改性聚氨酯预聚物的质量百分含量为25~30%、所述聚丙二醇2000的质量百分含量为15%~20%、所述纳米碳酸钙和重质碳酸钙的质量百分含量为50%~60%,所述硅烷偶联剂的质量百分含量为0~2%;所述粘结剂还包括质量百分含量为0~1%的抗氧化剂。
  12. 根据权利要求8所述的方法,其特征在于,所述在所述第一基板的所述第二面上形成柔性显示器本体,包括:
    在所述第一基板的所述第二面上形成平坦化层和/或水氧阻隔层;
    在所述平坦化层和/或水氧阻隔层上形成所述柔性显示器本体;
    所述在所述第一基板的所述第二面上形成平坦化层和/或水氧阻隔层,包括:
    在所述第一基板的所述第二面上形成包围所述第一基板的所述平坦化层和/或水氧阻隔层。
  13. 根据权利要求12所述的方法,其特征在于,所述通过吸湿溶胀的方式,使所述柔性显示器的所述第一基板与所述第二基板分离,得到柔性显示器之前,包括:
    在所述第一基板的边缘的所述平坦化层和/或水氧阻隔层进行切割,以形成与所述第一基板的表面成倾角的切口;所述倾角的角度为30-60度。
  14. 根据权利要求8所述的方法,其特征在于,所述通过吸湿溶胀的方式, 使所述柔性显示器的所述第一基板与所述第二基板分离,得到柔性显示器,包括:
    将带有所述第一基板和所述第二基板的柔性显示器本体放在水中浸泡,使所述第一基板与所述第二基板分离,得到所述带有第一基板的所述柔性显示器本体;
  15. 根据权利要求8所述的方法,其特征在于,所述水的温度为40~60℃。
  16. 根据权利要求8所述的方法,其特征在于,所述第二基板上设置有贯穿所述第二基板的多孔结构;
    所述通过所述第一面上的所述粘结剂,将所述第一基板贴附在第二基板上,包括:
    将所述第二基板上的所述多孔结构密封;
    通过所述第一面上的所述粘结剂,将所述第一基板贴附在所述多孔结构已密封的所述第二基板。
  17. 根据权利要求16所述的方法,其特征在于,所述通过吸湿溶胀的方式,使所述柔性显示器的所述第一基板与所述第二基板分离,得到柔性显示器,包括:
    将贴附后的所述第二基板上的所述多孔结构进行解密封。
  18. 根据权利要求8所述的方法,其特征在于,所述第一基板的材料为聚酰亚胺、聚萘二甲酸乙二醇酯、聚对苯二甲酸乙二醇酯、纤维强化塑料、聚醚砜树脂、聚芳酯或聚碳酸酯中的一种或多种。
  19. 根据权利要求8所述的方法,其特征在于,所述第二基板为玻璃基板、金属基板、石英基板或有机基板中的其中一种。
  20. 一种柔性显示器,其特征在于,所述柔性显示器采用权利要求1所述方法制备。
PCT/CN2018/073943 2017-12-29 2018-01-24 一种柔性显示器的制备方法及柔性显示器 WO2019127779A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101284980A (zh) * 2008-06-05 2008-10-15 江苏工业学院 水性聚氨酯黏合剂的制备方法及在道路反光材料上的应用
US20160315276A1 (en) * 2015-04-24 2016-10-27 Samsung Display Co., Ltd. Flexible substrate and method of manufacturing thereof and flexible display apparatus having the flexible substrate
CN106448473A (zh) * 2016-12-16 2017-02-22 京东方科技集团股份有限公司 显示面板母板以及显示面板制作方法
CN106847862A (zh) * 2016-12-28 2017-06-13 深圳市华星光电技术有限公司 一种柔性显示器基板及其制备方法,柔性显示器制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102224770A (zh) * 2008-12-02 2011-10-19 松下电工株式会社 电路基板的制造方法以及由该制造方法获得的电路基板
DE102009036541A1 (de) * 2009-08-07 2011-02-10 Resopal Gmbh Schaumstoff-Paneel
WO2011102341A1 (ja) * 2010-02-16 2011-08-25 電気化学工業株式会社 半導体ブロック接着装置、半導体ブロック接着方法及び半導体ウエハの製造方法
JP5618626B2 (ja) * 2010-05-27 2014-11-05 エルジー ディスプレイ カンパニー リミテッド 液晶表示素子及びその駆動方法
CN105158957A (zh) * 2013-07-03 2015-12-16 京东方科技集团股份有限公司 一种柔性显示器的制备方法和柔性显示器
KR101585334B1 (ko) * 2014-07-24 2016-01-14 삼성에스디아이 주식회사 액정표시장치용 모듈 및 이를 포함하는 액정표시장치
CN104317131B (zh) * 2014-11-10 2017-03-22 京东方科技集团股份有限公司 一种电子纸显示装置及其制作方法
CN106297967B (zh) * 2016-08-26 2018-01-16 京东方科技集团股份有限公司 柔性导电薄膜及其制备方法、柔性触摸屏及显示面板

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101284980A (zh) * 2008-06-05 2008-10-15 江苏工业学院 水性聚氨酯黏合剂的制备方法及在道路反光材料上的应用
US20160315276A1 (en) * 2015-04-24 2016-10-27 Samsung Display Co., Ltd. Flexible substrate and method of manufacturing thereof and flexible display apparatus having the flexible substrate
CN106448473A (zh) * 2016-12-16 2017-02-22 京东方科技集团股份有限公司 显示面板母板以及显示面板制作方法
CN106847862A (zh) * 2016-12-28 2017-06-13 深圳市华星光电技术有限公司 一种柔性显示器基板及其制备方法,柔性显示器制备方法

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