WO2020228196A1 - 显示面板的制备方法及显示面板 - Google Patents

显示面板的制备方法及显示面板 Download PDF

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Publication number
WO2020228196A1
WO2020228196A1 PCT/CN2019/104743 CN2019104743W WO2020228196A1 WO 2020228196 A1 WO2020228196 A1 WO 2020228196A1 CN 2019104743 W CN2019104743 W CN 2019104743W WO 2020228196 A1 WO2020228196 A1 WO 2020228196A1
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WIPO (PCT)
Prior art keywords
layer
flexible layer
flexible
display panel
substrate
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Ceased
Application number
PCT/CN2019/104743
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English (en)
French (fr)
Inventor
杨汉宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/605,212 priority Critical patent/US11325351B2/en
Publication of WO2020228196A1 publication Critical patent/WO2020228196A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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

  • This application relates to a display technology, in particular to a method for manufacturing a display panel and a display panel.
  • the current method of bending the binding area can effectively reduce the width of the lower border of the display panel.
  • the metal traces inside the display panel will be damaged under the action of stress.
  • the embodiment of the present application provides a method for manufacturing a display panel and a display panel to solve the problem that the bending radius of the bending area of the existing display panel is small, which causes the metal wiring inside the display panel to be damaged under the action of stress. problem.
  • An embodiment of the present application provides a method for manufacturing a display panel, wherein the manufacturing method includes the following steps:
  • the substrate includes a first setting area, and the first setting area is used for setting a bending area;
  • the forming a spacer structure layer on the first flexible layer includes the following steps:
  • the materials of the first flexible layer and the second flexible layer are the same.
  • the wavelength of light absorbed by the organic layer is different from the wavelength of light absorbed by the first flexible layer.
  • the spacer structure layer includes the carbonized layer, and the carbonized layer is formed by oxidizing the organic layer after absorbing light.
  • the material of the organic layer is doped with dyes or/and nanoparticles that have strong absorption of light with a wavelength greater than 500 nanometers, and they are organic materials that are easily oxidized;
  • the material of the first flexible layer is polyimide.
  • the organic layer covers the first flexible layer; or,
  • the organic layer covers the film layer of the first flexible layer in the first arrangement area.
  • the cutting off the substrate and the film layer of the first flexible layer located in the first setting area includes the following steps:
  • the embodiment of the present application also provides a method for manufacturing a display panel, and the manufacturing method includes the following steps:
  • the substrate includes a first setting area, and the first setting area is used for setting a bending area;
  • the forming a spacer structure layer on the first flexible layer includes the following steps:
  • a laser is used to irradiate the organic layer located in the first setting area, so that at least part of the organic layer forms a carbonized layer to separate the first flexible layer and the second flexible layer.
  • the wavelength of light absorbed by the organic layer is different from the wavelength of light absorbed by the first flexible layer.
  • the spacer structure layer includes the carbonized layer, and the carbonized layer is formed by oxidizing the organic layer after absorbing light.
  • the material of the organic layer is doped with dyes or/and nanoparticles that have strong absorption of light with a wavelength greater than 500 nanometers, and they are organic materials that are easily oxidized;
  • the material of the first flexible layer is polyimide.
  • the materials of the first flexible layer and the second flexible layer are the same.
  • the thickness of the carbonized layer is greater than or equal to 100 nanometers and less than or equal to 1 micrometer.
  • the organic layer covers the first flexible layer; or,
  • the organic layer covers the film layer of the first flexible layer in the first arrangement area.
  • the spacer structure layer is a release film; the release film covers the film layer of the first flexible layer in the first arrangement area.
  • the cutting off the substrate and the film layer of the first flexible layer located in the first setting area includes the following steps:
  • the cutting off the substrate and the film layer of the first flexible layer located in the first setting area includes the following steps:
  • an ultraviolet laser is used to cut both ends of the substrate and the film layer of the first flexible layer located in the first setting area.
  • the substrate further includes a second setting area and a third setting area, the second setting area is used to set the display area, the third setting area is used to set the binding area, so The first setting area is located between the second setting area and the third setting area.
  • the manufacturing method before the cutting off the substrate and the film layer of the first flexible layer located in the first setting area, the manufacturing method further includes:
  • the display area, the bending area and the binding area are formed on the second flexible layer.
  • the present application also relates to a display panel, including a substrate structure including a first setting area, a second setting area, and a third setting area, the first setting area is used for setting a bending area for bending , The second setting area is used to set a display area, the third setting area is used to set a binding area, and the substrate structure includes:
  • a substrate the substrate includes a first hollow portion, and the first hollow portion is correspondingly disposed in the first setting area;
  • the first flexible layer is disposed on the substrate, the first flexible layer includes a second hollow part, and the second hollow part is correspondingly disposed in the first disposition area;
  • the second flexible layer is arranged on the first flexible layer
  • the spacer structure layer is arranged between the first flexible layer and the second flexible layer, and at least part of the spacer structure layer is correspondingly arranged in the first arrangement area and exposed to the outside.
  • the spacer structure layer includes an organic layer and a carbonized layer formed on the organic layer, and the carbonized layer is located on a side close to the first flexible layer;
  • the carbonized layer Before bending the display panel, the carbonized layer needs to be peeled off.
  • the spacer structure layer is a release film.
  • the manufacturing method of the display panel of the present application provides a spacer structure layer between the first flexible layer and the second flexible layer, so that the first flexible layer and the second flexible layer are spaced apart, and then The area of the substrate and the first flexible layer corresponding to the first setting area is cut off, thereby reducing the thickness of the area of the flexible substrate corresponding to the first setting area; solving the bending of the bending area of the existing display panel
  • the small radius causes the technical problem of damage to the internal metal traces under the action of stress.
  • FIG. 1 is a flowchart of a manufacturing method of a display panel according to the first embodiment of the application
  • FIG. 3 is a flowchart of a manufacturing method of a display panel according to a second embodiment of the application
  • FIG. 5 is a flowchart of a manufacturing method of a display panel according to a third embodiment of the application.
  • FIG. 6 is a schematic diagram of the structure of the display panel of the first embodiment of the application.
  • FIG. 7 is a schematic diagram of another structure of the display panel of the first embodiment of the application.
  • FIG. 8 is a schematic structural diagram of a display panel according to a second embodiment of the application.
  • FIG. 9 is a schematic structural diagram of a display panel according to a third embodiment of the application.
  • the manufacturing method of the display panel of the present application includes a display area A, a bending area B, and a binding area C.
  • the substrate 11 includes a first setting area b, a second setting area a, and a third setting area c.
  • the first setting area b is used for setting the bending area B.
  • the second setting area a is used to set the display area A.
  • the third setting area c is used to set the binding area C.
  • the first setting area b is located between the second setting area a and the third setting area c.
  • the bending area B includes an insulating layer, a metal wiring b1, and a protective layer sequentially disposed on the second flexible layer 14.
  • the preparation method includes the following steps:
  • the laminated structure of the first flexible layer 12, the spacer structure layer 13, and the second flexible layer 14 is equivalent to a flexible substrate in the prior art.
  • FIG. 1 is a flowchart of a method for manufacturing a display panel according to the first embodiment of the application
  • FIG. 2 is another flowchart of a method for manufacturing the display panel according to the first embodiment of the application.
  • a substrate 11 is provided.
  • the substrate 11 may be a flexible substrate or a rigid substrate.
  • the substrate may be a polyethylene terephthalate or a glass substrate, but is not limited thereto.
  • the substrate 11 functions as a support and provides a flat base surface, facilitating the development of subsequent processes. Then go to step S12.
  • Step S12 forming a first flexible layer 12 on the substrate 11.
  • the first flexible layer 12 is formed by coating, evaporation, or chemical vapor deposition processes.
  • the material of the first flexible layer 12 is polyimide or other transparent flexible materials.
  • the material of the first flexible layer 12 has the ability to absorb light of a specific wavelength, which is different from the light of the wavelength that the organic layer 131 in the next step can absorb. Then, go to step S13.
  • Step S13 forming a spacer structure layer 13 on the first flexible layer 12, the spacer structure layer 13 covering at least the first arrangement area b.
  • forming the spacer structure layer 13 on the first flexible layer 12 includes the following steps:
  • S132 Use a laser to irradiate the organic layer 131 located in the first setting region b, so that at least part of the organic layer 131 forms a carbonized layer 132 to separate the first flexible layer 12 and the second flexible layer 14.
  • step S131 an organic layer 131 is formed on the first flexible layer 12.
  • the organic layer 131 can be formed by coating, vapor deposition, or inkjet printing. In the first embodiment, the organic layer 131 only covers the film layer of the first flexible layer 12 located in the first arrangement area b. In some embodiments, the organic layer covers the entire first flexible layer. In addition, by controlling the flatness of the organic layer 131, the roughness of the area of the display panel corresponding to the first disposition area b can be effectively reduced. Then transfer to S14.
  • Step S132 irradiating the organic layer 131 in the first setting area b with a laser, so that at least a part of the organic layer 131 forms a carbonized layer 132 to separate the first flexible layer 12 and the second flexible layer 12 Layer 14.
  • step S132 is after step S14, and after step S132 is completed, the process proceeds to S15.
  • the wavelength of light absorbed by the organic layer 131 is different from the wavelength of light absorbed by the first flexible layer 12.
  • Such an arrangement is to cause carbonization of the organic layer 1301 under the irradiation of a laser of a specific wavelength in step S132, but the first flexible layer 12 and the second flexible layer 14 will not be carbonized.
  • the spacer structure layer 13 includes the carbonized layer 132.
  • the carbonized layer 132 is formed by oxidizing the organic layer 131 after absorbing light of a specific wavelength.
  • the material of the organic layer 131 is doped with dyes or/and nanoparticles that have strong absorption for light with a wavelength greater than 500 nanometers, and it is an organic material that is easily oxidized. In this way, the organic layer 131 can absorb light with wavelengths above 500 nanometers and oxidize to form the carbonized layer 132.
  • the material of the first flexible layer is polyimide, which is easily oxidized by absorbing light of wavelengths below 500 nanometers. Therefore, when the organic layer 131 is irradiated by a laser of more than 500 nanometers, a carbonized layer 132 is formed on the side of the organic layer 131 facing the laser, and the first flexible layer 12 and the second flexible layer 14 will not be carbonized.
  • the carbonized layer 132 is formed so that the second flexible layer 14 and the first flexible layer 12 are not connected.
  • the second flexible layer 14 and the first flexible layer 12 corresponding to areas other than the first arrangement area b are effectively connected.
  • the thickness of the carbonized layer 132 is greater than or equal to 100 nanometers and less than or equal to 1 micrometer. When the thickness of the carbonized layer is less than 100 nanometers, the carbonized layer 132 cannot achieve the effect of separating the organic layer 131 and the first flexible layer 12; when the carbonized layer 132 is larger than 1 micron, the laser energy required to form the carbonized layer 132 is relatively large. And the efficiency is reduced. Then go to step S14.
  • Step S14 forming the second flexible layer 14 on the first flexible layer 12, and the second flexible layer 14 covers the spacer structure layer 13.
  • the second flexible layer 14 is formed by coating, evaporation, or chemical vapor deposition processes.
  • the first flexible layer 12 and the second flexible layer 14 are made of the same material.
  • the combined second flexible layer 14 covers the organic layer 131 and covers the first flexible layer 12 outside the area of the organic layer 131. This arrangement facilitates the connection of the first flexible layer 12 and the second flexible layer 14.
  • the material of the second flexible layer 14 is polyimide or other transparent flexible materials. Moreover, the material of the second flexible layer 14 has the property of absorbing light of a specific wavelength. Then transfer to S132.
  • Step S15 forming the display area a, the bending area b and the binding area c on the second flexible layer 14.
  • step S16 includes the following steps:
  • step S16 may also be: cutting and peeling off the cut-out part, the cut-out part being the film layer of the substrate and the first flexible layer located in the first arrangement area.
  • step S16 is divided into three steps to gradually remove the substrate 11, the first flexible layer 12 and the carbonized layer 132 located in the first setting area b, so that the accuracy of the removal can be controlled.
  • an ultraviolet laser is used to cut both ends of the film layer of the substrate 11 and the first flexible layer 12 located in the first setting area b. And by controlling the laser energy and cutting time to cut the substrate 11 and the first flexible layer 12.
  • the substrate 11, the first flexible layer 12, and the carbonized layer 132 at the first setting area b are removed by peeling, so as to reduce the thickness of the flexible substrate corresponding to the bending area B.
  • the flexible substrate includes a first flexible layer 12, an organic layer 131, a carbonized layer 132, and a second flexible layer 14.
  • the positions of the organic layer 131 and the carbonized layer 132 can be achieved by adjusting the thickness of the first flexible layer 12 and the second flexible layer 14, so as to control the degree of thinning of the flexible substrate. Further, by thinning the flexible substrate corresponding to the bending zone B, that is, cutting off the first flexible layer 12 and the carbonized layer 132 at the first setting zone b, the bending neutral layer of the bending zone B is adjusted to the metal Above the trace or metal trace. Therefore, when the bending area B is bent, damage to the metal traces can be avoided.
  • FIG. 3 is a flowchart of a method for manufacturing a display panel according to a second embodiment of the application
  • FIG. 4 is another flowchart of a method for manufacturing the display panel according to the second embodiment of the application.
  • the reference numerals in FIG. 4 of the second embodiment and the reference numerals in FIG. 2 represent the same objects.
  • Step S232 in the second embodiment is after step S261 and before step S262.
  • step S231 steps S24, S25, and S261 are sequentially transferred, and step S261 is then sequentially transferred to steps S232, S262, and S263.
  • step S232 is not performed to avoid affecting the overall support balance of the flexible substrate, which facilitates the formation of subsequent film layers more smoothly.
  • step S232 is placed after step S261, the actual range of the first setting area b is determined, which serves as an identification and reduces the thickness of part of the range, which facilitates direct laser irradiation in the subsequent step S232, that is, save The laser energy and irradiation time are improved, and the efficiency of forming the carbonized layer 232 is improved.
  • FIG. 5 is a flowchart of a manufacturing method of a display panel according to a third embodiment of the application.
  • the third embodiment is different from the first embodiment in that: in the method for manufacturing the display panel of the present application, the spacer structure layer is a release film; the release film covers the first flexible layer and is located The film layer of the first setting area b.
  • step S33 the spacer structure layer is directly formed without forming an organic layer and then a carbonized layer.
  • step 36 only the substrate and the film layer of the first flexible layer located in the first setting area b may be removed, without removing the release film.
  • the release film is used to replace the carbonized layer, which saves the steps of laser irradiation and improves efficiency.
  • FIG. 6 is a schematic structural diagram of the display panel according to the first embodiment of the application
  • FIG. 7 is another schematic structural diagram of the display panel according to the first embodiment of the application.
  • the substrate structure 10 includes a first arrangement area b, a second arrangement area a, and a third arrangement area c.
  • the first setting area b is used for setting the bending area B for bending.
  • the second setting area a is used to set the display area A.
  • the third setting area c is used to set the binding area C.
  • the substrate structure 10 includes a substrate 11, a first flexible layer 12, a second flexible layer 14 and a spacer structure layer 13.
  • the substrate 11 includes a first hollow portion 111.
  • the first hollow portion 111 is correspondingly disposed in the first setting area b.
  • the first flexible layer 12 is provided on the substrate 11.
  • the first flexible layer 12 includes a second hollow portion 121.
  • the second hollow portion 121 is correspondingly disposed in the first setting area b.
  • the second flexible layer 14 is provided on the first flexible layer 12.
  • the spacer structure layer is arranged between the first flexible layer 12 and the second flexible layer 14. At least part of the spacer structure layer is correspondingly arranged in the first arrangement area b and exposed outside.
  • the spacer structure layer is only correspondingly arranged in the area of the first arrangement area b.
  • the problem of laser scanning range can be ignored, that is, the laser can scan the entire panel. Since the organic layer 131 is only located in the first arrangement area b corresponding to the bending area B, only the organic layer 131 in this area is carbonized.
  • the spacer structure layer includes an organic layer 131 and a carbonized layer formed on the organic layer 131, and the carbonized layer is located on a side close to the first flexible layer 12. It should be noted that before the display panel is bent, the carbonized layer needs to be peeled and removed.
  • the positions of the organic layer 131 and the carbonized layer can be achieved by adjusting the thickness of the first flexible layer 12 and the second flexible layer 14 so as to control the degree of thinning of the flexible substrate. Further, by thinning the flexible substrate corresponding to the bending area B, that is, cutting off the first flexible layer 12 and the carbonized layer at the first setting area b, the bending neutral layer of the bending area B is adjusted to the metal path. Above the line b1 or metal trace b1. Therefore, when the bending area B is bent, the metal trace b1 can be prevented from being damaged.
  • FIG. 8 is a schematic structural diagram of a display panel according to a second embodiment of the application.
  • the difference between the second embodiment and the first embodiment is that the organic layer 231 of the spacer structure layer covers the entire first flexible layer 22, that is, covers the entire first arrangement area b, the second arrangement area a, and the third arrangement area.
  • Set area c is a schematic structural diagram of a display panel according to a second embodiment of the application.
  • FIG. 9 is a schematic structural diagram of a display panel according to a third embodiment of the application.
  • the difference between the display panel of the third embodiment and the first embodiment is that the spacer structure layer 33 is a release film.
  • the manufacturing method of the display panel of the present application provides a spacer structure layer between the first flexible layer and the second flexible layer, so that the first flexible layer and the second flexible layer are spaced apart, and then The area of the substrate and the first flexible layer corresponding to the first setting area is cut off, thereby reducing the thickness of the area of the flexible substrate corresponding to the first setting area; solving the bending of the bending area of the existing display panel
  • the small radius causes the technical problem of damage to the internal metal traces under the action of stress.

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Abstract

一种显示面板及其制备方法。制备方法包括:基板(11)包括有第一设置区(b),第一设置区(b)用于设置弯折区(B)(S11);在基板(11)上形成第一柔性层(12)(S12);在第一柔性层(12)上形成间隔结构层(13),间隔结构层(13)至少覆盖第一设置区(b)(S13);在第一柔性层(12)上形成第二柔性层(14),第二柔性层(14)覆盖间隔结构层(13)(S14);切除基板(11)和第一柔性层(12)位于第一设置区(b)的膜层(S16)。

Description

显示面板的制备方法及显示面板 技术领域
本申请涉及一种显示技术,特别涉及一种显示面板的制备方法及显示面板。
背景技术
随着科技发展,人们对窄边框产品的需求逐渐提高。目前弯折绑定区的方法能有效地减小显示面板的下边框宽度。而在显示面板中,当显示面板的弯折区的弯折半径较小时,会导致其内部的金属走线在应力的作用下发生损伤。
技术问题
本申请实施例提供一种显示面板的制备方法及显示面板,以解决现有的显示面板的弯折区的弯折半径较小,导致其内部的金属走线在应力的作用下发生损伤的技术问题。
技术解决方案
本申请实施例提供一种显示面板的制备方法,其中,所述制备方法包括以下步骤:
提供一基板,所述基板上包括有第一设置区,所述第一设置区用于设置弯折区;
在所述基板上形成第一柔性层;
在所述第一柔性层上形成间隔结构层,所述间隔结构层至少覆盖所述第一设置区;
在所述第一柔性层上形成第二柔性层,所述第二柔性层覆盖所述间隔结构层;
切除所述基板和所述第一柔性层位于所述第一设置区的膜层;
所述在所述第一柔性层上形成间隔结构层,包括以下步骤:
在所述第一柔性层上形成有机层;
采用激光照射位于所述第一设置区域的所述有机层,使所述有机层的至少部分形成碳化层,以间隔所述第一柔性层和所述第二柔性层;
所述第一柔性层和所述第二柔性层的材料相同。
在本申请的显示面板的制备方法中,所述有机层吸收的光波长与所述第一柔性层吸收的光波长不同。
在本申请的显示面板的制备方法中,所述间隔结构层包括所述碳化层,所述碳化层由所述有机层吸收光后氧化形成。
在本申请的显示面板的制备方法中,所述有机层的材料中掺杂有对波长大于500纳米的光具有强吸收的染料或/和纳米粒子,且其为具有易氧化的有机材料;所述第一柔性层的材料为聚酰亚胺。
在本申请的显示面板的制备方法中,所述有机层覆盖所述第一柔性层;或,
所述有机层覆盖所述第一柔性层位于所述第一设置区的膜层。
在本申请的显示面板的制备方法中,所述切除所述基板和所述第一柔性层位于所述第一设置区的膜层,包括如下步骤:
切割并剥离所述基板位于所述第一设置区的膜层;
切割并剥离所述第一柔性层位于所述第一设置区的膜层。
本申请实施例还提供一种显示面板的制备方法,所述制备方法包括以下步骤:
提供一基板,所述基板上包括有第一设置区,所述第一设置区用于设置弯折区;
在所述基板上形成第一柔性层;
在所述第一柔性层上形成间隔结构层,所述间隔结构层至少覆盖所述第一设置区;
在所述第一柔性层上形成第二柔性层,所述第二柔性层覆盖所述间隔结构层;
切除所述基板和所述第一柔性层位于所述第一设置区的膜层。
在本申请的显示面板的制备方法中,所述在所述第一柔性层上形成间隔结构层,包括以下步骤:
在所述第一柔性层上形成有机层;
采用激光照射位于所述第一设置区域的所述有机层,使所述有机层的至少部分形成碳化层,以间隔所述第一柔性层和所述第二柔性层。
在本申请的显示面板的制备方法中,所述有机层吸收的光波长与所述第一柔性层吸收的光波长不同。
在本申请的显示面板的制备方法中,所述间隔结构层包括所述碳化层,所述碳化层由所述有机层吸收光后氧化形成。
在本申请的显示面板的制备方法中,所述有机层的材料中掺杂有对波长大于500纳米的光具有强吸收的染料或/和纳米粒子,且其为具有易氧化的有机材料;所述第一柔性层的材料为聚酰亚胺。
在本申请的显示面板的制备方法中,所述第一柔性层和所述第二柔性层的材料相同。
在本申请的显示面板的制备方法中,所述碳化层的厚度大于或等于100纳米,且小于等于1微米。
在本申请的显示面板的制备方法中,所述有机层覆盖所述第一柔性层;或,
所述有机层覆盖所述第一柔性层位于所述第一设置区的膜层。
在本申请的显示面板的制备方法中,所述间隔结构层为离型膜;所述离型膜覆盖所述第一柔性层位于所述第一设置区的膜层。
在本申请的显示面板的制备方法中,所述切除所述基板和所述第一柔性层位于所述第一设置区的膜层,包括如下步骤:
切割并剥离所述基板位于所述第一设置区的膜层;
切割并剥离所述第一柔性层位于所述第一设置区的膜层。
在本申请的显示面板的制备方法中,所述切除所述基板和所述第一柔性层位于所述第一设置区的膜层,包括如下步骤:
切割并剥离切除部分,所述切除部分为所述基板和所述第一柔性层位于所述第一设置区的膜层。
在本申请的显示面板的制备方法中,采用紫外激光对所述基板和所述第一柔性层位于所述第一设置区的膜层的两端进行切割。
在本申请的显示面板的制备方法中,所述基板还包括第二设置区和第三设置区,所述第二设置区用于设置显示区,第三设置区用于设置绑定区,所述第一设置区位于所述第二设置区和所述第三设置区之间。
在本申请的显示面板的制备方法中,在所述切除所述基板和所述第一柔性层位于所述第一设置区的膜层,之前,所述制备方法还包括:
在所述第二柔性层上形成所述显示区、弯折区和绑定区。
本申请还涉及一种显示面板,包括一基板结构,所述基板结构包括第一设置区、第二设置区和第三设置区,所述第一设置区用于设置进行弯折的弯折区,所述第二设置区用于设置显示区,所述第三设置区用于设置绑定区,所述基板结构包括:
基板,所述基板包括第一镂空部,所述第一镂空部对应设置在所述第一设置区;
第一柔性层,设置在所述基板上,所述第一柔性层包括一第二镂空部,所述第二镂空部对应设置在所述第一设置区;
第二柔性层,设置在所述第一柔性层上;以及
间隔结构层,设置在所述第一柔性层和所述第二柔性层之间,且所述间隔结构层的至少部分对应设置在所述第一设置区并裸露在外。
在本申请的所述的显示面板中,所述间隔结构层包括有机层和形成在所述有机层上的碳化层,所述碳化层位于靠近所述第一柔性层的一侧;
所述显示面板进行弯折前,需将所述碳化层进行剥离。
在本申请的所述的显示面板中,所述间隔结构层为离型膜。
有益效果
相较于现有技术,本申请的显示面板的制备方法通过在第一柔性层和第二柔性层之间设置间隔结构层,使得第一柔性层和第二柔性层之间间隔开,随后在基板及第一柔性层对应于第一设置区的区域进行切除处理,进而减薄了柔性衬底对应于第一设置区的区域的厚度;解决了现有的显示面板的弯折区的弯折半径较小,导致其内部的金属走线在应力的作用下发生损伤的技术问题。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面对实施例中所需要使用的附图作简单的介绍。下面描述中的附图仅为本申请的部分实施例,对于本领域普通技术人员而言,在不付出创造性劳动的前提下,还可以根据这些附图获取其他的附图。
图1为本申请的第一实施例的显示面板的制备方法的流程图;
图2为本申请的第一实施例的显示面板的制备方法的另一流程图;
图3为本申请的第二实施例的显示面板的制备方法的流程图;
图4为本申请的第二实施例的显示面板的制备方法的另一流程图;
图5为本申请的第三实施例的显示面板的制备方法的流程图;
图6为本申请的第一实施例的显示面板的结构示意图;
图7为本申请的第一实施例的显示面板的另一结构示意图
图8为本申请的第二实施例的显示面板的结构示意图;
图9为本申请的第三实施例的显示面板的结构示意图。
本发明的实施方式
请参照附图中的图式,其中相同的组件符号代表相同的组件。以下的说明是基于所例示的本申请具体实施例,其不应被视为限制本申请未在此详述的其它具体实施例。
本申请的显示面板的制备方法。该显示面板包括显示区A、弯折区B和绑定区C。所述基板11上包括有第一设置区b、第二设置区a和第三设置区c。所述第一设置区b用于设置弯折区B。所述第二设置区a用于设置显示区A。第三设置区c用于设置绑定区C。所述第一设置区b位于所述第二设置区a和所述第三设置区c之间。弯折区B包括依次设置在第二柔性层14上的绝缘层、金属走线b1和保护层。
所述制备方法包括以下步骤:
S11:提供一基板11;
S12:在所述基板11形成第一柔性层12;
S13:在所述第一柔性层12上形成间隔结构层13,所述间隔结构层13至少覆盖所述第一设置区b;
S14:在所述第一柔性层12上形成所述第二柔性层14,所述第二柔性层14覆盖所述间隔结构层13;
S15:在所述第二柔性层14上形成所述显示区A、弯折区B和绑定区C;
S16:切除所述基板11和所述第一柔性层12位于所述第一设置区b的膜层。
在本申请的显示面板的制备方法中,第一柔性层12、间隔结构层13和第二柔性层14的层叠结构相当于现有技术的柔性衬底。
请参照图1和图2,图1为本申请的第一实施例的显示面板的制备方法的流程图;图2为本申请的第一实施例的显示面板的制备方法的另一流程图。
在本申请的第一实施例的显示面板的制备方法中,步骤S11,提供一基板11。基板11可以是柔性基板也可以是硬性基板,比如基板可以是聚对苯二甲酸乙二醇酯或玻璃基板等,但不限于此。基板11起到一个支撑和提供一个平整基面的作用,便于后续工艺的开展。随后转入步骤S12。
步骤S12,在所述基板11形成第一柔性层12。
具体的,采用涂布、蒸镀或化学气相沉积工艺等方式形成第一柔性层12,可选的,第一柔性层12的材料为聚酰亚胺或其他透明柔性材料。且第一柔性层12的材料具有吸收特定波长光的性能,该特定波长光与下步骤中的有机层131所能吸收的波长光不同。随后,转入步骤S13。
步骤S13,在所述第一柔性层12上形成间隔结构层13,所述间隔结构层13至少覆盖所述第一设置区b。
具体的,所述在所述第一柔性层12上形成间隔结构层13,包括以下步骤:
S131:在所述第一柔性层12上形成有机层131;
S132:采用激光照射位于所述第一设置区域b的所述有机层131,使所述有机层131的至少部分形成碳化层132,以间隔所述第一柔性层12和所述第二柔性层14。
其中,步骤S131,在所述第一柔性层12上形成有机层131。
有机层131可采用涂布、蒸镀或喷墨打印等方式形成。在本第一实施例中,有机层131仅覆盖第一柔性层12位于第一设置区b的膜层。在一些实施例中,有机层覆盖整个第一柔性层。另外,可以通过控制有机层131的平坦度,能有效地降低显示面板对应于第一设置区b的区域的粗糙度。随后转入S14。
步骤S132,采用激光照射位于所述第一设置区域b的所述有机层131,使所述有机层131的至少部分形成碳化层132,以间隔所述第一柔性层12和所述第二柔性层14。其中,步骤S132处于步骤S14之后,完成步骤S132后,随即转入S15。
所述有机层131吸收的光波长与所述第一柔性层12吸收的光波长不同。这样的设置,是为了在步骤S132时,在特定波长激光的照射下,使得有机层1301出现碳化,而第一柔性层12、第二柔性层14均不会出现碳化。
具体的,所述间隔结构层13包括所述碳化层132。所述碳化层132由所述有机层131吸收特定波长的光后氧化形成。
进一步的,所述有机层131的材料中掺杂有对波长大于500纳米的光具有强吸收的染料或/和纳米粒子,且其为具有易氧化的有机材料。这样,有机层131便可以吸收500纳米以上的波长光而氧化形成碳化层132。而所述第一柔性层的材料为聚酰亚胺,其容易吸收500纳米以下的波长光而氧化。因此,当有机层131在500纳米以上的激光的照射下时,有机层131面向激光的一侧形成了碳化层132,而第一柔性层12和第二柔性层14则不会出现碳化。
进而,碳化层132的形成,使得第二柔性层14和第一柔性层12不连接。而对应于第一设置区b以外区域的第二柔性层14和第一柔性层12有效连接。
所述碳化层132的厚度大于或等于100纳米,且小于等于1微米。当碳化层的厚度小于100纳米时,碳化层132达不到间隔有机层131和第一柔性层12的效果;当碳化层132大于1微米时,形成碳化层132所需的激光能量较大,且效率降低。随后转入步骤S14。
步骤S14,在所述第一柔性层12上形成所述第二柔性层14,所述第二柔性层14覆盖所述间隔结构层13。
具体的,采用涂布、蒸镀或化学气相沉积工艺等方式形成第二柔性层14。可选的,所述第一柔性层12和所述第二柔性层14的材料相同。结合第二柔性层14覆盖有机层131且覆盖有机层131区域以外的第一柔性层12。这样的设置,便于第一柔性层12和第二柔性层14的连接。
可选的,第二柔性层14的材料为聚酰亚胺或其他透明柔性材料。且第二柔性层14的材料具有吸收特定波长光的性能。随后转入S132。
步骤S15,在所述第二柔性层14上形成所述显示区a、弯折区b和绑定区c。
S16:切除所述基板11和所述第一柔性层12位于所述第一设置区b的膜层。
具体的,步骤S16包括如下步骤:
S161:切割并剥离所述基板11位于所述第一设置区b的膜层;
S162:切割并剥离所述第一柔性层12位于所述第一设置区b的膜层;
S163:去除所述碳化层132。
在一些实施例中,步骤S16也可以是:切割并剥离切除部分,所述切除部分为所述基板和所述第一柔性层位于所述第一设置区的膜层。
在本第一实施例中,步骤S16分三步逐步切除位于第一设置区b的基板11、第一柔性层12和碳化层132,可以控制切除的精度。
步骤S16中的切割,采用紫外激光对所述基板11和所述第一柔性层12位于所述第一设置区b的膜层的两端进行切割。并通过控制激光能量和切割时间来切断基板11和第一柔性层12。
本第一实施例通过剥离去除位于第一设置区b处的基板11、第一柔性层12和碳化层132,以减薄弯折区B对应的柔性衬底的厚度。柔性衬底包括第一柔性层12、有机层131、碳化层132和第二柔性层14。
而有机层131和碳化层132的位置可以通过调节第一柔性层12和第二柔性层14的厚度实现,进而实现对柔性衬底减薄程度的控制。进一步的,通过减薄与弯折区B对应的柔性衬底,即切除第一设置区b处的第一柔性层12和碳化层132,将弯折区B的弯折中性层调整到金属走线或金属走线的上方。故而,当弯折区B进行弯折时,可避免金属走线受到损伤。
这样便完成了本第一实施例的显示面板的制备方法。
请参照图3和图4,图3为本申请的第二实施例的显示面板的制备方法的流程图;图4为本申请的第二实施例的显示面板的制备方法的另一流程图。本第二实施例的图4标号和图2的标号的代表的物件一致。
本第二实施例的显示面板的制备方法与第一实施例的制备方法的不同之处在于:
本第二实施例的步骤S232,处于步骤S261之后和步骤S262之前。
即步骤S231之后依次转入步骤S24、S25、S261,步骤S261再依次转入步骤S232、S262和S263。
具体的,在步骤S231之后,不进行步骤S232,以避免影响柔性衬底整体的支撑平衡性,这样便于更平整地形成后续膜层。另外,将步骤S232置于步骤S261之后,确定了第一设置区b的实际范围,起到一个标识的作用且减少了该范围的部分厚度,便于后续步骤S232中进行直接的激光照射,即节省了激光能量和照射时间,提高碳化层232形成的效率。
请参照图5,图5为本申请的第三实施例的显示面板的制备方法的流程图。本第三实施例与第一实施例的不同之处在于:在本申请的显示面板的制备方法中,所述间隔结构层为离型膜;所述离型膜覆盖所述第一柔性层位于所述第一设置区b的膜层。
在本第三实施例中,在步骤S33中,直接形成间隔结构层,而无需先形成有机层再形成碳化层。在步骤36仅切除所述基板和所述第一柔性层位于所述第一设置区b的膜层即可,而不用去除离型膜。
采用离型膜替代碳化层,节省了进行激光照射的步骤,提高了效率。
请参照图6和图7,图6为本申请的第一实施例的显示面板的结构示意图;图7为本申请的第一实施例的显示面板的另一结构示意图。在本申请的第一实施例的显示面板100中,其包括一基板结构10。基板结构10包括第一设置区b、第二设置区a和第三设置区c。第一设置区b用于设置进行弯折的弯折区B。第二设置区a用于设置显示区A。第三设置区c用于设置绑定区C。
基板结构10包括基板11、第一柔性层12、第二柔性层14和间隔结构层13。
基板11包括第一镂空部111。第一镂空部111对应设置在第一设置区b。
第一柔性层12设置在基板11上。第一柔性层12包括一第二镂空部121。第二镂空部121对应设置在第一设置区b。第二柔性层14设置在第一柔性层12上。
间隔结构层设置在第一柔性层12和所述第二柔性层14之间。间隔结构层的至少部分对应设置在第一设置区b并裸露在外。
在本第一实施例中,间隔结构层仅对应设置在第一设置区b的区域。这样的设置,在进行激光照射时,可以不用考虑激光扫描范围的问题,即激光可以对整个面板进行扫描。由于有机层131仅处于弯折区B对应的第一设置区b,因此只有该区域的有机层131发生碳化。
具体的,间隔结构层包括有机层131和形成在有机层131上的碳化层,所述碳化层位于靠近第一柔性层12的一侧。需要说明的是,显示面板进行弯折前,需将所述碳化层进行剥离去除。
有机层131和碳化层的位置可以通过调节第一柔性层12和第二柔性层14的厚度实现,进而实现对柔性衬底减薄程度的控制。进一步的,通过减薄弯折区B对应于的柔性衬底,即切除第一设置区b处的第一柔性层12和碳化层,将弯折区B的弯折中性层调整到金属走线b1或金属走线b1的上方。故而,当弯折区B进行弯折时,可避免金属走线b1受到损伤。
请参照图8,图8为本申请的第二实施例的显示面板的结构示意图。本第二实施例与第一实施例的不同之处在于:所述间隔结构层的有机层231覆盖整个第一柔性层22,即覆盖整个第一设置区b、第二设置区a和第三设置区c。
请参照图9,图9为本申请的第三实施例的显示面板的结构示意图。本第三实施例的显示面板与第一实施例的不同之处在于,间隔结构层33为离型膜。
相较于现有技术,本申请的显示面板的制备方法通过在第一柔性层和第二柔性层之间设置间隔结构层,使得第一柔性层和第二柔性层之间间隔开,随后在基板及第一柔性层对应于第一设置区的区域进行切除处理,进而减薄了柔性衬底对应于第一设置区的区域的厚度;解决了现有的显示面板的弯折区的弯折半径较小,导致其内部的金属走线在应力的作用下发生损伤的技术问题。
以上所述,对于本领域的普通技术人员来说,可以根据本申请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申请后附的权利要求的保护范围。

Claims (20)

  1. 一种显示面板的制备方法,其中,所述制备方法包括以下步骤:
    提供一基板,所述基板上包括有第一设置区,所述第一设置区用于设置弯折区;
    在所述基板上形成第一柔性层;
    在所述第一柔性层上形成间隔结构层,所述间隔结构层至少覆盖所述第一设置区;
    在所述第一柔性层上形成第二柔性层,所述第二柔性层覆盖所述间隔结构层;
    切除所述基板和所述第一柔性层位于所述第一设置区的膜层;
    所述在所述第一柔性层上形成间隔结构层,包括以下步骤:
    在所述第一柔性层上形成有机层;
    采用激光照射位于所述第一设置区域的所述有机层,使所述有机层的至少部分形成碳化层,以间隔所述第一柔性层和所述第二柔性层;
    所述第一柔性层和所述第二柔性层的材料相同。
  2. 根据权利要求1所述的显示面板的制备方法,其中,所述有机层吸收的光波长与所述第一柔性层吸收的光波长不同。
  3. 根据权利要求2所述的显示面板的制备方法,其中,所述间隔结构层包括所述碳化层,所述碳化层由所述有机层吸收光后氧化形成。
  4. 根据权利要求3所述的显示面板的制备方法,其中,所述有机层的材料中掺杂有对波长大于500纳米的光具有强吸收的染料或/和纳米粒子,且其为具有易氧化的有机材料;所述第一柔性层的材料为聚酰亚胺。
  5. 根据权利要求1所述的显示面板的制备方法,其中,所述有机层覆盖所述第一柔性层;或,
    所述有机层覆盖所述第一柔性层位于所述第一设置区的膜层。
  6. 根据权利要求1所述的显示面板的制备方法,其中,所述切除所述基板和所述第一柔性层位于所述第一设置区的膜层,包括如下步骤:
    切割并剥离所述基板位于所述第一设置区的膜层;
    切割并剥离所述第一柔性层位于所述第一设置区的膜层。
  7. 一种显示面板的制备方法,其中,所述制备方法包括以下步骤:
    提供一基板,所述基板上包括有第一设置区,所述第一设置区用于设置弯折区;
    在所述基板上形成第一柔性层;
    在所述第一柔性层上形成间隔结构层,所述间隔结构层至少覆盖所述第一设置区;
    在所述第一柔性层上形成第二柔性层,所述第二柔性层覆盖所述间隔结构层;
    切除所述基板和所述第一柔性层位于所述第一设置区的膜层。
  8. 根据权利要求7所述的显示面板的制备方法,其中,所述在所述第一柔性层上形成间隔结构层,包括以下步骤:
    在所述第一柔性层上形成有机层;
    采用激光照射位于所述第一设置区域的所述有机层,使所述有机层的至少部分形成碳化层,以间隔所述第一柔性层和所述第二柔性层。
  9. 根据权利要求8所述的显示面板的制备方法,其中,所述有机层吸收的光波长与所述第一柔性层吸收的光波长不同。
  10. 根据权利要求9所述的显示面板的制备方法,其中,所述间隔结构层包括所述碳化层,所述碳化层由所述有机层吸收光后氧化形成。
  11. 根据权利要求10所述的显示面板的制备方法,其中,所述有机层的材料中掺杂有对波长大于500纳米的光具有强吸收的染料或/和纳米粒子,且其为具有易氧化的有机材料;所述第一柔性层的材料为聚酰亚胺。
  12. 根据权利要求7所述的显示面板的制备方法,其中,所述第一柔性层和所述第二柔性层的材料相同。
  13. 根据权利要求8所述的显示面板的制备方法,其中,所述有机层覆盖所述第一柔性层;或,
    所述有机层覆盖所述第一柔性层位于所述第一设置区的膜层。
  14. 根据权利要求7所述的显示面板的制备方法,其中,所述间隔结构层为离型膜;所述离型膜覆盖所述第一柔性层位于所述第一设置区的膜层。
  15. 根据权利要求7所述的显示面板的制备方法,其中,所述切除所述基板和所述第一柔性层位于所述第一设置区的膜层,包括如下步骤:
    切割并剥离所述基板位于所述第一设置区的膜层;
    切割并剥离所述第一柔性层位于所述第一设置区的膜层。
  16. 根据权利要求7所述的显示面板的制备方法,其中,所述切除所述基板和所述第一柔性层位于所述第一设置区的膜层,包括如下步骤:
    切割并剥离切除部分,所述切除部分为所述基板和所述第一柔性层位于所述第一设置区的膜层。
  17. 根据权利要求15所述的显示面板的制备方法,其中,采用紫外激光对所述基板和所述第一柔性层位于所述第一设置区的膜层的两端进行切割。
  18. 一种显示面板,包括一基板结构,所述基板结构包括第一设置区、第二设置区和第三设置区,所述第一设置区用于设置进行弯折的弯折区,所述第二设置区用于设置显示区,所述第三设置区用于设置绑定区,其中,
    所述基板结构包括:
    基板,所述基板包括第一镂空部,所述第一镂空部对应设置在所述第一设置区;
    第一柔性层,设置在所述基板上,所述第一柔性层包括一第二镂空部,所述第二镂空部对应设置在所述第一设置区;
    第二柔性层,设置在所述第一柔性层上;以及
    间隔结构层,设置在所述第一柔性层和所述第二柔性层之间,且所述间隔结构层的至少部分对应设置在所述第一设置区并裸露在外。
  19. 根据权利要求18所述的显示面板,其中,所述间隔结构层包括有机层和形成在所述有机层上的碳化层,所述碳化层位于靠近所述第一柔性层的一侧;
    所述显示面板进行弯折前,需将所述碳化层进行剥离。
  20. 根据权利要求18所述的显示面板,其中,所述间隔结构层为离型膜。
PCT/CN2019/104743 2019-05-16 2019-09-06 显示面板的制备方法及显示面板 Ceased WO2020228196A1 (zh)

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