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WO2019090729A1 - Écran d'affichage flexible et son procédé de coupe et d'ébarbage - Google Patents

Écran d'affichage flexible et son procédé de coupe et d'ébarbage Download PDF

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Publication number
WO2019090729A1
WO2019090729A1 PCT/CN2017/110556 CN2017110556W WO2019090729A1 WO 2019090729 A1 WO2019090729 A1 WO 2019090729A1 CN 2017110556 W CN2017110556 W CN 2017110556W WO 2019090729 A1 WO2019090729 A1 WO 2019090729A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
cutting
flexible
display
display assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/110556
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English (en)
Chinese (zh)
Inventor
李文辉
薛正寅
罗永辉
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.)
Shenzhen Royole Technologies Co Ltd
Original Assignee
Shenzhen Royole Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Royole Technologies Co Ltd filed Critical Shenzhen Royole Technologies Co Ltd
Priority to PCT/CN2017/110556 priority Critical patent/WO2019090729A1/fr
Priority to CN201780095858.2A priority patent/CN111201560B/zh
Priority to TW107139747A priority patent/TW201918317A/zh
Publication of WO2019090729A1 publication Critical patent/WO2019090729A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present application relates to the field of flexible display screens, and in particular to a flexible display screen and a method of cutting and trimming the same.
  • the flexible display screen due to the attaching precision, is interlaced with the polarizer, the touch screen and the organic electroluminescent device, and needs to be trimmed and trimmed.
  • the first method is to perform cutting and trimming and then to cover the cover; the second method is to cut and trim the cover after the cover is finished.
  • both of these cutting and trimming methods have defects.
  • the first method is to cut the outside of the device before the cover is applied, which may cause foreign matter pollution, easy to generate bubbles, etc., and reduce the yield;
  • the ink area of the board is easily damaged by laser cutting, causing abnormalities such as carbonization of the ink and color change.
  • the embodiment of the present application discloses a flexible display screen and a cutting and trimming method thereof, which can improve the yield and avoid laser cutting damage.
  • the flexible display screen disclosed in the embodiment of the present application includes a display assembly and a flexible cover plate.
  • the flexible cover plate is stacked on the display assembly, and the flexible cover plate has an ink area protruding from a periphery of the display assembly.
  • the flexible display screen further includes an anti-laser coating disposed on the ink region of the flexible cover and facing a side of the display assembly, the periphery of the display assembly being trimmed by laser cutting.
  • the method for cutting and trimming a flexible display screen disclosed in the embodiment of the present application includes the steps of: providing a display assembly; providing a flexible cover plate to fit the flexible cover plate, the flexible cover plate having An ink area protruding from a periphery of the display component; an anti-laser coating is formed on a side of the ink area facing the display component; and the display component is laser-cut and trimmed.
  • the method for cutting and trimming a flexible display screen disclosed in the embodiment of the present application comprises the steps of: providing a display assembly; providing a flexible cover plate, wherein a periphery of the flexible cover plate is provided with an ink area; and one of the ink areas Making a laser-resistant coating on the periphery of the side; facing the display assembly with the side of the flexible cover having the laser-resistant coating, and bonding the flexible cover to the display assembly, the anti-laser Coating Having a perimeter that is not obscured by the display assembly; and laser cutting the display assembly.
  • the flexible display screen of the present application and the cutting and trimming method thereof form an anti-laser coating on the ink region of the flexible panel, and the laser-resistant coating protects the ink region of the flexible panel from being burnt when laser cutting the display assembly In order to avoid abnormalities such as carbonization and color change in the ink region.
  • FIG. 1A is a schematic cross-sectional view of a flexible display screen before cutting according to an embodiment of the present application.
  • FIG. 1B is a schematic cross-sectional view of a flexible display screen after cutting according to an embodiment of the present application.
  • FIG. 2A is a schematic cross-sectional view of a flexible display screen before cutting according to another embodiment of the present application.
  • 2B is a schematic cross-sectional view of the flexible display screen after cutting according to another embodiment of the present application.
  • 3A is a schematic cross-sectional view of a flexible display screen before cutting according to still another embodiment of the present application.
  • FIG. 3B is a schematic cross-sectional view of the flexible display screen after cutting according to still another embodiment of the present application.
  • 4A is a schematic view of an anti-laser coating in an embodiment of the present application.
  • 4B is a schematic view of an anti-laser coating in another embodiment of the present application.
  • 4C is a schematic view of an anti-laser coating in still another embodiment of the present application.
  • FIG. 5 is a schematic flow chart of a method for cutting and trimming a flexible display screen according to an embodiment of the present application.
  • FIG. 6 is a schematic flow chart of a method of cutting and trimming a flexible display screen according to still another embodiment of the present application.
  • FIG. 1A and FIG. 1B are schematic cross-sectional views of a flexible display screen 100 in an embodiment of the present application. It can be understood that the flexible display screen 100 is applied to the terminal.
  • the terminal may be a mobile phone, a tablet computer, a notebook computer, or a terminal that needs to be applied to a display screen, such as a smart home.
  • the flexible display screen 100 includes a flexible substrate 10, a display assembly 30, and a flexible cover 50.
  • the display assembly 30 is laminated on the flexible substrate 10.
  • the display assembly 30 is in the form of a stack.
  • the flexible cover 50 is laminated on the display assembly 30.
  • the flexible substrate 10 is approximately the same size as the display assembly 30.
  • the size of the flexible cover 50 is greater than the dimensions of the flexible substrate 10 and the display assembly 30. A portion of the periphery of the flexible cover 50 that protrudes beyond the display assembly 30 forms an ink zone 51.
  • the flexible substrate 10 can be bent at will.
  • the material of the flexible substrate 10 may be a material such as polyethylene naphthalate, polyethylene terephthalate or polyimide resin. It will be appreciated that in an embodiment, the flexible substrate 10 may be omitted.
  • the flexible cover 50 is a transparent film.
  • the display component 30 includes at least an Organic Light-Emitting Diode (OLED) 31 and a Polarizer (POL) 33.
  • the organic electroluminescent device 31 can be plated on the flexible substrate 10 using a mask vacuum process.
  • the organic electroluminescent device 31 includes a plurality of pixel units (not labeled) of an array, each of which includes at least two pixels of different colors such that the organic electroluminescent device 31 can display a color image.
  • the polarizing layer 33 is laminated on the organic electroluminescent device 31.
  • the flexible cover 50 is laminated on the polarizing layer 33. The light emitted from the organic electroluminescent device 31 is emitted after being polarized by the polarizing layer 33.
  • the display component 30' further includes a touch panel (TP) 35.
  • the touch layer 35 is laminated on the organic electroluminescent device 31.
  • the polarizing layer 33 is laminated on the touch layer 35.
  • the display assembly 30' thus has a touch function.
  • the display assembly 30" further includes a first adhesive layer 32.
  • the first adhesive layer 32 is laminated on the organic electroluminescent device 31.
  • Control layer 35 Stacked on the first adhesive layer 32.
  • the first adhesive layer 32 may be Optically Clear Adhesive (OCA), which is colorless and transparent, has a light transmittance of 90% or more, and has good cementation strength. It can be understood that the first adhesive layer 32 can also be other cement materials with high light transmittance, for example, a mouth glue.
  • OCA Optically Clear Adhesive
  • the first adhesive layer 32 can also be other cement materials with high light transmittance, for example, a mouth glue.
  • the display assembly 30 further includes a second adhesive layer 34.
  • the second adhesive layer 34 is laminated on the polarizing layer 33.
  • the flexible cover 50 is laminated on the second adhesive layer 34. It can be understood that the second adhesive layer 34 is the same material as the first adhesive layer 32.
  • the display assembly 30 further includes a thin film transistor layer (not shown).
  • the thin film transistor layer is laminated between the organic electroluminescent device 31 and the flexible substrate 10.
  • the display component 30 can further include other layers, for example, a third adhesive layer (not shown) laminated between the polarizing layer 33 and the touch layer 35. .
  • the number of the organic electroluminescent device 31, the polarizing layer 33, the touch layer 35, and the thin film transistor layer is not limited to one layer, and may be two or more layers.
  • the display component 30 includes one or more layers of the organic electroluminescent device 31, the polarizing layer 33, the touch layer 35, and the thin film transistor layer.
  • the display assembly 30 may be stacked, and may include all or part of the components that enable flexible display.
  • the flexible display screen 100 further includes an anti-laser coating 70 disposed on a side of the ink zone 51 adjacent the display assembly 30.
  • the anti-laser coating 70 is formed on the ink region 51 of the flexible cover 50 before the flexible cover 50 is attached to the display assembly 30. It can be understood that, in other embodiments, the anti-laser coating 70 is formed on the ink region 51 of the flexible cover 50 near the display after the flexible cover 50 is attached to the display assembly 30. One side of the assembly 30.
  • the anti-laser coating 70 entirely covers the ink region 51.
  • the anti-laser coating 70 may also cover one side of the ink zone 51.
  • the anti-laser coating 70 may also cover a portion of one side of the ink zone 51. It can be understood that the anti-laser coating 70 may cover the corresponding portion of the ink region 51 according to the needs of the path or pattern of laser cutting.
  • the anti-laser coating 70 is made of a laser resistant material, and the anti-laser material includes three At least one of alumina, boron nitride, silicon carbide, zirconia, and silicon oxide.
  • the anti-laser material is in the form of particles or powder.
  • the anti-laser coating 70 is formed, the anti-laser material is first mixed with a silicone resin, heated to fuse the two together, and then the fusion is performed. The material is printed on the side of the ink zone 51 facing the display assembly 30 by mesh printing, and finally the anti-laser coating 70 is baked at a temperature of about 150 degrees Celsius to be cured. It will be appreciated that a coagulant may also be added to the silicone resin such that the anti-laser coating 70 may also cure without baking.
  • the thickness of the anti-laser coating 70 can be set according to actual needs, for example, 2 mm. In general, the anti-laser coating 70 can resist strong laser for more than 10 seconds.
  • the laser cutting the same position is within 10 seconds, so the anti-laser coating 70 can effectively protect the The ink zone 51 is not burned.
  • the anti-laser effect of the anti-laser coating 70 may have different anti-laser effects depending on the composition thereof, and the better the anti-laser effect, the worse the toughness is. Therefore, when the material is actually selected, the anti-laser effect is obtained. A compromise between resilience and resilience.
  • the display components 30 themselves are stacked and staggered, and the periphery of the flexible substrate 10 and the display component 30 are also stacked and staggered.
  • the flexible substrate 10 and the periphery of the display assembly 30 are laser-cut, so that the flexible substrate 10 and the display assembly 30 are circumferentially aligned.
  • the anti-laser coating 70 protects the ink region 51 from laser burn during laser cutting, thereby avoiding abnormalities such as carbonization, color change, and the like of the ink region 51.
  • FIG. 5 is a flowchart of a method for cutting and trimming a flexible display screen according to an embodiment of the present application.
  • the cutting trimming method is applied to the aforementioned flexible display screen 100, and the order of execution is not limited to the order shown in FIG.
  • the method includes the steps of:
  • step S501 a display component 30 is provided. Specifically, an organic electroluminescent device 31 is provided on which a polarizing layer 33 is formed to form the display assembly 30.
  • a touch layer 35 is first formed on the organic electroluminescent device 31, and then a polarizing layer 33 is formed on the touch layer 35 to form the display assembly 30.
  • a first adhesive layer 32 is formed on the organic electroluminescent device 31; and the touch layer 33 is formed on the first adhesive layer 32.
  • Step S502 providing a flexible cover 50, the flexible cover 50 and the display assembly 30 In conformity, the flexible cover 50 has an ink zone 51 projecting from the periphery of the display assembly 30.
  • a second adhesive layer 34 is formed on the polarizing layer 35, and the second adhesive layer 34 is bonded to the flexible cover 50.
  • step S503 an anti-laser coating 70 is formed on the side of the ink region 51 facing the display assembly 30.
  • the anti-laser coating 70 is correspondingly formed on the side of the ink region 51 facing the display assembly 30 according to the path or pattern of laser cutting.
  • the anti-laser coating 70 is made of a laser resistant material including at least one of aluminum oxide, boron nitride, silicon carbide, zirconia, and silicon oxide.
  • step S504 the display assembly 30 is subjected to laser cutting and trimming, and the anti-laser coating 70 protects the ink region 51 from being damaged by laser during the laser cutting process, thereby avoiding abnormalities such as carbonization and color change of the ink region 51.
  • FIG. 6 is a flowchart of a method for cutting and trimming a flexible display screen according to still another embodiment of the present application.
  • the cutting trimming method is applied to the aforementioned flexible display screen 100, and the order of execution is not limited to the order shown in FIG.
  • the method includes the steps of:
  • step S601 a display component 30 is provided. Specifically, an organic electroluminescent device 31 is provided on which a polarizing layer 33 is formed to form the display assembly 30.
  • a touch layer 35 is first formed on the organic electroluminescent device 31, and then a polarizing layer 33 is formed on the touch layer 35 to form the display assembly 30.
  • a first adhesive layer 32 is formed on the organic electroluminescent device 31; and the touch layer 33 is formed on the first adhesive layer 32.
  • step S602 a flexible cover 50 is provided, and the periphery of the flexible cover 50 is provided with an ink zone 51.
  • an anti-laser coating 70 is formed on the periphery of one side of the ink region 51. Specifically, an anti-laser coating 70 is correspondingly formed on the side of the ink region facing the display assembly according to a path or pattern of laser cutting.
  • the anti-laser coating 70 is made of a laser resistant material including at least one of aluminum oxide, boron nitride, silicon carbide, zirconia, and silicon oxide.
  • the anti-laser coating 70 is prepared by mixing an anti-laser material with a silicone resin, heating to fuse the two together, and printing the fused material by mesh printing on the ink area facing the surface. Display component One side of 30, and the anti-laser coating 70 is cured.
  • Step S604 the side of the flexible cover 50 having the anti-laser coating 70 faces the display assembly 30, and the flexible cover 50 is attached to the display assembly 30, the anti-laser coating Layer 70 has a perimeter that is not obscured by the display assembly 30.
  • step S605 the display assembly 30 is subjected to laser cutting and trimming, and the anti-laser coating 70 protects the ink region 51 from being damaged by laser during the laser cutting process, thereby avoiding abnormalities such as carbonization and color change of the ink region 51.
  • the flexible display screen of the present application and the cutting and trimming method thereof form an anti-laser coating on the ink region of the flexible panel, and the laser-resistant coating protects the ink region of the flexible panel from being burnt when laser cutting the display assembly In order to avoid abnormalities such as carbonization and color change in the ink region.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

La présente invention concerne un écran d'affichage flexible (100) et son procédé de fabrication. L'écran d'affichage (100) comprend un ensemble d'affichage (30) et une plaque de recouvrement flexible (50). La plaque de recouvrement flexible (50) est empilée sur l'ensemble d'affichage (30). La plaque de recouvrement flexible (50) a une région d'encre (51) faisant saillie depuis la périphérie de l'ensemble d'affichage (30). L'écran d'affichage flexible (100) comprend également une couche de revêtement anti-laser (70) agencée dans la région d'encre (51) de la plaque de recouvrement flexible (50) et en regard d'une face de l'ensemble d'affichage (30). La périphérie de l'ensemble d'affichage (30) est coupée et ébarbée au moyen d'un laser. La couche de revêtement anti-laser (70) est formée dans la région d'encre (51) de la plaque de recouvrement flexible (50) et, lorsque l'ensemble d'affichage (30) est coupé au moyen du laser, la couche de revêtement anti-laser (70) protège la région d'encre (51) de la plaque de recouvrement flexible contre des brûlures, de sorte à empêcher que la région d'encre (51) présente des défauts comme une carbonisation et des changements de couleur.
PCT/CN2017/110556 2017-11-10 2017-11-10 Écran d'affichage flexible et son procédé de coupe et d'ébarbage Ceased WO2019090729A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2017/110556 WO2019090729A1 (fr) 2017-11-10 2017-11-10 Écran d'affichage flexible et son procédé de coupe et d'ébarbage
CN201780095858.2A CN111201560B (zh) 2017-11-10 2017-11-10 柔性显示屏及其切割修边方法
TW107139747A TW201918317A (zh) 2017-11-10 2018-11-09 柔性顯示幕及其切割修邊方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/110556 WO2019090729A1 (fr) 2017-11-10 2017-11-10 Écran d'affichage flexible et son procédé de coupe et d'ébarbage

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TW (1) TW201918317A (fr)
WO (1) WO2019090729A1 (fr)

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CN111201560B (zh) 2022-02-18
CN111201560A (zh) 2020-05-26

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