WO2022116655A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置 Download PDF

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Publication number
WO2022116655A1
WO2022116655A1 PCT/CN2021/119846 CN2021119846W WO2022116655A1 WO 2022116655 A1 WO2022116655 A1 WO 2022116655A1 CN 2021119846 W CN2021119846 W CN 2021119846W WO 2022116655 A1 WO2022116655 A1 WO 2022116655A1
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WO
WIPO (PCT)
Prior art keywords
layer
display panel
filling
inorganic
display
Prior art date
Application number
PCT/CN2021/119846
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English (en)
French (fr)
Inventor
周琦
谭兵
Original Assignee
合肥维信诺科技有限公司
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Publication date
Application filed by 合肥维信诺科技有限公司 filed Critical 合肥维信诺科技有限公司
Publication of WO2022116655A1 publication Critical patent/WO2022116655A1/zh
Priority to US18/190,471 priority Critical patent/US20230232692A1/en

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present application relates to the field of display technology, and in particular, to a display panel and a display device.
  • OLED Organic Light-Emitting Diode
  • LCD liquid crystal display
  • OLEDs use thin layers of organic materials and glass substrates that emit light when an electric current passes through them. Therefore, OLED display panels can significantly save power, can be made lighter and thinner, can withstand a wider range of temperature changes than LCD display panels, and have a larger viewing angle.
  • the OLED display panel is expected to become the next-generation flat panel display technology after LCD, and is one of the most concerned technologies in the current flat panel display technology.
  • AMOLED Active-matrix organic light-emitting diode
  • the touch layer matched with the AMOLED flexible display panel can realize the input of information through fingers, stylus, etc.
  • the touch layer usually includes an organic material layer and a metal layer, and the organic material and the metal process are poorly matched, resulting in poor touch control due to disconnection.
  • Embodiments of the present application provide a display panel and a display device, aiming at solving the problem of poor reliability caused by metal residues in the display panel.
  • Embodiments of the first aspect of the present application provide a display panel, a display panel having a bending area and flattening areas located on both sides of the bending area in the length direction of the display panel, the display panel It includes: a display structure layer; a first insulating layer, located on one side of the display structure layer, the first insulating layer includes a first organic layer and a first inorganic layer that are stacked and arranged, and the first inorganic layer includes a first a body part and at least one first filling part located in the bending area, the structural rigidity of the first filling part is smaller than the structural rigidity of the first body part; the touch layer is located on the first insulating layer away from the Displays one side of the structural layer.
  • Embodiments of the second aspect of the present application further provide a display device, including the above-mentioned display panel.
  • the display panel includes a display structure layer, a first insulating layer and a touch layer.
  • a first inorganic layer and a first organic layer are arranged in the first insulating layer.
  • the first inorganic layer includes a first body part and a first filling part. The rigidity of the first filling part is relatively small, and the first filling part is located in the bending area. By arranging the first filling part, the bending performance of the first inorganic layer can be improved.
  • the display panel of the embodiment of the present application can improve the problem of poor reliability caused by metal residues in the display panel under the premise of ensuring that the display panel has good bending performance.
  • FIG. 1 is a schematic structural diagram of a display panel provided by an embodiment of the first aspect of the present application
  • FIG. 2 is a partial cross-sectional view of a display panel according to an embodiment of the first aspect of the present application
  • FIG. 3 is a schematic diagram of a partial layer structure of a display panel according to an embodiment of the first aspect of the present application
  • FIG. 4 is a cross-sectional view of a partial layer structure of a display panel according to an embodiment of the first aspect of the present application
  • FIG. 5 is a cross-sectional view of a partial layer structure of a display panel according to another embodiment of the first aspect of the present application.
  • FIG. 6 is a cross-sectional view of a display panel according to another embodiment of the first aspect of the present application.
  • FIG. 7 is a cross-sectional view of a display panel according to another embodiment of the first aspect of the present application.
  • FIG. 8 is a cross-sectional view of a display panel according to still another embodiment of the first aspect of the present application.
  • FIG. 9 is a cross-sectional view of a display panel according to another embodiment of the first aspect of the present application.
  • FIG. 10 is a cross-sectional view of a display panel according to another embodiment of the first aspect of the present application.
  • FIG. 11 is a schematic flowchart of a method for manufacturing a display panel according to an embodiment of the second aspect of the present application.
  • FIG. 12 is a schematic flowchart of a method for manufacturing a display panel according to another embodiment of the second aspect of the present application.
  • FIG. 13 is a schematic flowchart of a method for manufacturing a display panel according to another embodiment of the second aspect of the present application.
  • FIG. 14 is a schematic flowchart of a method for manufacturing a display panel according to yet another embodiment of the second aspect of the present application.
  • Bendable and foldable AMOLED flexible display panels are the current technology and market trends in the display industry.
  • the touch layer matched with the AMOLED flexible display panel can realize the input of information through fingers, stylus, etc.
  • the touch layer usually includes an organic material layer and a metal layer.
  • the present application is made.
  • the display panel 10 the display device and the manufacturing method of the display panel 10 according to the embodiments of the present application will be described in detail below with reference to FIG. 1 to FIG. 14 .
  • the display area AA of the display panel 10 has a bending area AA1 and a flattening area AA2 located on both sides of the bending area AA1 in the length direction of the display panel 10 (X direction in FIG. 1 ).
  • the display panel 10 It is possible to switch between the bent state and the flattened state through the bending area AA1. In the bent state, the included angle between the two flattened areas AA2 is less than 180 degrees, and in the flattened state, the included angle between the two flattened areas AA2 is 180 degrees.
  • the boundary line between the flattening area AA2 and the bending area AA1 is shown by a dashed-dotted line, and the dashed-dotted line does not constitute a structural limitation on the display panel 10 of the embodiment of the present application.
  • the display panel 10 further includes a non-display area NA, and the non-display area NA may be located on at least one side of the display area AA, or the non-display area NA may be located on the peripheral side of the display area AA.
  • the display panel 10 provided by the embodiment of the present application includes: a display structure layer 100 ; a first insulating layer 200 located on one side of the display structure layer 100 , and the first insulating layer 200 includes a stacked first organic layer 210 and the first inorganic layer 220, the first inorganic layer 220 includes a first body part 221 and a first filling part 222, the structural rigidity of the first filling part 222 is smaller than that of the first body part 221, and the first filling part 222 is located in the The bending area AA1; the touch layer 300 is located on the side of the first insulating layer 200 away from the display structure layer 100 .
  • the inorganic material does not have the problem that the functional group and the metal material react with each other to generate a substance that is not easy to be etched.
  • Disposing the first inorganic layer 220 on the display panel 10 provided in the embodiment of the present application can improve the poor adhesion between the organic material and the metal material layer in the touch layer 300 , which is easy to cause the problem of poor function, and can improve the metal residue in the touch layer 300 . the problem of poor reliability.
  • Providing the first filling portion 222 can improve the bending performance of the first inorganic layer 220 , thereby improving the influence of the first inorganic layer 220 on the bending performance of the display panel 10 , and ensuring that the display panel 10 has good bending performance. Therefore, the display panel 10 of the embodiment of the present application can improve the problem of poor reliability caused by metal residues in the display panel 10 under the premise of ensuring that the display panel 10 has good bending performance.
  • the display structure layer 100 further includes a display device layer and an encapsulation layer, and the first insulating layer 200 is located on a side of the encapsulation layer away from the display device layer.
  • the display structure layer 100 further includes a driving device layer on the side of the display device layer away from the encapsulation layer.
  • the driving device layer includes, for example, a driving circuit for driving the display panel 10 to display.
  • the driving circuit includes a thin film transistor, a scanning circuit, a data circuit, and the like.
  • the display device layer includes a first electrode, a light-emitting structure layer and a second electrode
  • the light-emitting structure layer includes a pixel definition layer, a pixel opening disposed with the pixel definition layer, and a light-emitting structure located in the pixel opening.
  • the encapsulation layer includes a stacked organic layer and an inorganic layer, and the like.
  • the first insulating layer 200 may also extend from the display area AA to the non-display area NA.
  • the touch layer 300 extends from the display area AA to the non-display area NA, and the metal layer in the touch layer 300 is connected to the metal layer of the display structure layer 100 in the non-display area NA, so that the metal layer in the touch layer 300 passes through the display structure
  • the metal layers in layer 100 are electrically connected to external devices and transmit information.
  • the number of the first filling parts 222 of the first inorganic layer 220 is not limited.
  • the first filling parts 222 may be provided in plurality and distributed at intervals along the length direction. This arrangement can further improve the flexibility of the display panel 10 and improve the bending performance of the display panel 10 .
  • the distance between two adjacent first filling parts 222 in the length direction may be 1 ⁇ m ⁇ 10 ⁇ m.
  • the distance between the two adjacent first filling parts 222 is within the above range, it can avoid that the distance between the two adjacent first filling parts 222 is too far, resulting in the size of the first body part 221 being too large. It is too large to affect the bending performance of the display panel 10 , and it can also avoid that the distance between two adjacent first filling parts 222 is too small, resulting in insufficient structural rigidity of part of the display panel 10 in the bending area AA1 and easy to be damaged.
  • part of the first filling part 222 is omitted in FIG. 2 .
  • the size of the first filling portion 222 in the longitudinal direction may be 1 ⁇ m ⁇ 10 ⁇ m.
  • the size of the first filling part 222 in the longitudinal direction is within the above range, it can avoid that the size of the first filling part 222 in the longitudinal direction is too small, resulting in the size of the first body part 221 being too large and affecting the display panel 10 bending performance. It can also be avoided that the extension dimension of the first filling portion 222 in the longitudinal direction is too large, resulting in insufficient structural rigidity of part of the display panel 10 in the bending area AA1, which is prone to damage.
  • FIG. 3 Please refer to FIG. 3 , in order to show the structure of the first inorganic layer 220 more clearly, only the first inorganic layer 220 and the display structure layer 100 are shown in FIG. 3 .
  • the first filling portion 222 is extended and formed in the width direction (the Y direction in FIG. 3 ), which can improve the structural rigidity of the display panel 10 in the width direction.
  • the first filling portion 222 is disposed through the first inorganic layer 220 in the width direction, which further reduces the structural rigidity of the display panel 10 in the length direction, improves the bending performance of the display panel 10, and facilitates the display panel 10 in the bent state and the flattened state. transition between.
  • the first filling portion 222 is disposed through the first inorganic layer 220 in the thickness direction, which can further reduce the structural rigidity of the display panel 10 in the longitudinal direction, improve the bending performance of the display panel 10 , and facilitate the display panel 10 when bending. transition between the folded state and the flattened state.
  • the cross-sectional shape of the first filling portion 222 is at least one of a rectangle, a trapezoid, a semicircle, and a combination thereof.
  • the cross-sectional shape of the first filling portion 222 is a cross-section of the first filling portion 222 on a plane where the thickness direction (Z direction in FIG. 4 ) and the longitudinal direction are located.
  • the cross section of the first filling portion 222 is inconsistent in size in the thickness direction.
  • the first filling part 222 has a first subsection 222a and a second subsection 222b distributed in the thickness direction, and the size of the first subsection 222a in the longitudinal direction is larger than that of the second subsection 222b in the longitudinal direction. Then, when the display panel 10 forms a bending opening in the bending state, in the bending state, the first subsection 222a is located on the side of the second subsection 222b away from the bending opening. That is, in the view direction shown in FIG.
  • the size of the first subsection 222a in the longitudinal direction is larger than the size of the second subsection 222b in the longitudinal direction, and the first subsection 222a has better flexibility.
  • the first subsection 222a is located on the side of the second subsection 222b away from the bending opening, which can further improve the bending performance of the display panel 10 .
  • the arrangement positions of the first inorganic layer 220 and the first organic layer 210 are not limited.
  • the first inorganic layer 220 may be arranged on the side of the first organic layer 210 facing the encapsulation layer.
  • the material of the first filling part 222 may be the same as the material of the first organic layer 210.
  • an inorganic material layer may be formed on the encapsulation layer, and the organic material layer may be patterned to form the first body portion 221 and the first opening.
  • the installation position of the first opening is the same as the installation position of the first filling part 222 .
  • the organic material layer may be patterned to form the first body portion 221 and the first opening.
  • the material of the first filling part 222 is the same as that of the first organic layer 210 , there is no need to increase the process of separately forming the first filling part 222 , which can simplify the molding process of the display panel 10 and improve the molding efficiency of the display panel 10 .
  • the material of the first organic layer 210 includes one or more of polyimide, polyacrylate, polyetherimide, polyethylene terephthalate, and polyethylene naphthalate. kind.
  • the material of the first filling part 222 may be one or more of polyimide, polyacrylate, polyetherimide, polyethylene terephthalate, and polyethylene naphthalate.
  • the material of the first inorganic layer 220 may be one or more of silicon nitride, silicon oxide, and silicon oxynitride.
  • the touch layer 300 includes a first metal layer 310 , a second insulating layer 320 , and a second metal layer 330 located on a side of the first metal layer 310 away from the first insulating layer 200 .
  • the second insulating layer 320 is located between the first metal layer 310 and the second metal layer 330 and includes the second organic layer 321 .
  • the first inorganic layer 220 may be disposed on the side of the first organic layer 210 facing the touch layer 300 , then the material of the first filling portion 222 may be the metal material of the first metal layer 310 and/or the second The insulating material of the insulating layer 320 .
  • the first inorganic layer 220 When the first inorganic layer 220 is located on the side of the first organic layer 210 facing the touch layer 300 , during the molding process of the display panel 10 , an inorganic material layer can be formed on the first organic layer 210 , and the inorganic material layer can be patterned The process forms the first body portion 221 and the first opening. Then continue to form the first metal layer 310 and the first insulating layer 200 on the inorganic material layer. When the distribution area of the first metal layer 310 is large and the first metal layer 310 can cover at least part of the first opening, at least part of the first opening The material of the metal layer 310 enters the first opening to form the first filling portion 222 .
  • the distribution area of the first metal layer 310 is small, and the first metal layer 310 does not cover the first opening or does not completely cover all the first openings, at least part of the first insulating layer 200 The material enters the first opening to form the first filling portion 222 .
  • Materials of the first metal layer 310 and the second metal layer 320 may be one or more of Ti, Al, Mo, Ag, Cu, and Ni.
  • the material of the first filling part 222 may be one or more of Ti, Al, Mo, Ag, Cu, and Ni.
  • An organic material layer may also be provided in the touch layer 300 to avoid metal residues.
  • the second insulating layer 320 includes a second inorganic layer 322.
  • the second inorganic layer 322 includes a second body part 322a and a second filling part 322b.
  • the second filling part 322b has a lower structural rigidity than the second body part 322a.
  • the second filling portion 322b is located in the bending area AA1.
  • the compatibility between the second organic layer 321 and the first metal layer 310 and the second metal layer 330 can be improved, and the compatibility between the second organic layer 321 and the second metal layer 330 can be avoided.
  • the contact surfaces of the first metal layer 310 and/or the second metal layer 330 generate metal residues and cause poor function.
  • a second filling portion 322b is disposed on the second inorganic layer 322, and the structural rigidity of the second filling portion 322b is relatively low, which can ensure that the display panel 10 has good bending performance.
  • the second inorganic layer 322 may be disposed on the side of the second organic layer 321 close to the second metal layer 330 .
  • the second inorganic layer 322 may be disposed on the side of the second organic layer 321 close to the first metal layer 310 .
  • the first filling part 222 may be formed on the first inorganic layer 220 using a separate process step.
  • the distribution area of the first metal layer 310 when the distribution area of the first metal layer 310 is large and can completely cover the first opening of the first inorganic layer 220 , at least part of the material of the first metal layer 310 can be used to form the first filling portion 222 .
  • the second inorganic layer 322 is located in the second organic layer 321 away from the first metal layer On one side of the 310 , at least part of the material of the second organic layer 321 forms the second filling part 322 b , and the first organic layer 210 forms the first filling part 222 .
  • the number of the second filling parts 322b is not limited. A plurality of second filling parts 322b may be provided, and the plurality of second filling parts 322b are distributed at intervals along the length direction. The flexibility of the display panel 10 can be further improved, and the bending performance of the display panel 10 can be improved.
  • the pitch between two adjacent second filling portions 322b in the longitudinal direction is, for example, 1 ⁇ m to 10 ⁇ m.
  • the distance between two adjacent second filling parts 322b is within the above range, it can avoid that the distance between two adjacent second filling parts 322b is too far, resulting in the size of the second body part 322a being too large. It is large and affects the bending performance of the display panel 10 . It can also be avoided that the distance between the two adjacent second filling parts 322b is too small, resulting in insufficient structural rigidity of part of the display panel 10 in the bending area AA1, which is prone to damage.
  • the size of the second filling portion 322b in the length direction is 1 ⁇ m ⁇ 10 ⁇ m.
  • the size of the second filling part 322b in the longitudinal direction is within the above range, it can avoid that the size of the second filling part 322b in the longitudinal direction is too small, resulting in the size of the second body part 322a being too large and affecting the display panel 10 bending performance. It can also be avoided that the size of the second filling portion 322b in the longitudinal direction is too large, resulting in insufficient structural rigidity of a part of the display panel 10 in the bending area AA1, which is prone to damage.
  • the second filling portion 322b is extended and formed in the width direction, which can improve the structural rigidity of the display panel 10 in the width direction.
  • the second filling portion 322b is disposed through the second inorganic layer 322 in the width direction, which can further reduce the structural rigidity of the display panel 10 in the length direction, improve the bending performance of the display panel 10, and facilitate the display panel 10 during bending. transition between state and flattened state.
  • the second filling portion 322b is disposed through the second inorganic layer 322 in the thickness direction, which can further reduce the structural rigidity of the display panel 10 in the longitudinal direction and improve the display panel.
  • the bending performance of the display panel 10 facilitates the transition of the display panel 10 between the bent state and the flattened state.
  • the cross-sectional shape of the second filling portion 322b is at least one of a rectangle, a trapezoid, a semicircle and a combination thereof.
  • the cross-sectional shape of the second filling portion 322b is the cross-section of the second filling portion 322b on the plane where the thickness direction and the longitudinal direction are located.
  • the cross section of the second filling portion 322b is inconsistent in size in the thickness direction.
  • the second filling part 322b has a third subsection (not shown in the figure) and a fourth subsection (not shown in the figure) distributed in the thickness direction, and the size of the third subsection in the length direction is larger than that of the third subsection in the length direction. The dimension of the quarters in the length direction. Then, when the display panel 10 forms a bending opening in a bent state, in the bent state, the third subsection is located on the side of the fourth subsection away from the bending opening.
  • the dimension of the third subsection in the longitudinal direction is larger than that of the fourth subsection in the longitudinal direction, and the third subsection has better flexibility.
  • the third subsection is located on the side of the fourth subsection away from the bending opening, which can further improve the bending performance of the display panel 10 .
  • the display panel 10 further includes, for example, a protective layer 400 disposed on a side of the touch layer 300 away from the first insulating layer 200 .
  • the protective layer 400 is used to provide protection to the touch layer 300 .
  • the material of the protective layer 400 is an organic material, which can improve the bending performance of the display panel 10 .
  • Embodiments of the second aspect of the present application provide a display device including the display panel 10 of any one of the above-mentioned first aspects. Since the display device of the embodiment of the present application includes the above-mentioned display panel 10 , the display device of the embodiment of the present application has the beneficial effects of the above-mentioned display panel 10 , which will not be repeated here.
  • the display devices in the embodiments of the present application include but are not limited to mobile phones, personal digital assistants (Personal Digital Assistant, PDA for short), tablet computers, e-books, televisions, access control, smart fixed phones, consoles, and other devices with display functions .
  • PDA Personal Digital Assistant
  • the method for fabricating the display panel 10 provided by the embodiment of the third aspect of the present application includes:
  • Step S01 providing a display structure layer 100 .
  • the display structure layer 100 includes, for example, a display device layer and an encapsulation layer.
  • Step S02 forming a first insulating layer 200 on one side of the display structure layer 100 .
  • the first insulating layer 200 is formed on a side of the encapsulation layer away from the display device layer.
  • the first insulating layer 200 includes a stacked first organic layer 210 and a first inorganic layer 220 , the first inorganic layer 220 includes a first body part 221 and a first filling part 222 , and the structural rigidity of the first filling part 222 is smaller than that of the first filling part 222 .
  • the first filling portion 222 is located in the bending area AA1.
  • Step S03 forming a touch layer 300 on the side of the first insulating layer 200 away from the display structure layer 100.
  • the first insulating layer 200 is provided with the first inorganic layer 220 and the first organic layer 210 , and by arranging the first inorganic layer 220 , the organic material and the metal in the touch layer 300 can be improved.
  • the poor layer adhesion performance is likely to cause the problem of poor function, which improves the problem of poor reliability caused by metal residues in the touch layer 300 .
  • the first inorganic layer 220 includes a first body part 221 and a first filling part 222.
  • the rigidity of the first filling part 222 is relatively small, and the first filling part 222 is located in the bending area AA1.
  • the bending performance of an inorganic layer 220 can further improve the influence of the first inorganic layer 220 on the bending performance of the display panel 10 and ensure that the display panel 10 has good bending performance. Therefore, the display panel 10 of the embodiment of the present application can improve the problem of poor reliability caused by metal residues in the display panel 10 under the premise of ensuring that the display panel 10 has good bending performance.
  • Step S02 includes:
  • Step S0211 forming a first inorganic material layer on the side of the display device layer away from the encapsulation layer, and patterning the first inorganic material layer to form a first body portion 221 and a first opening.
  • Step S0212 Disposing an organic material on the side of the first inorganic material layer away from the encapsulation layer, at least part of the organic material enters the first opening to form a first filling part 222, and the first filling part 222 and the first body part 221 together form a first inorganic material layer 220 , and other organic materials located on the side of the first inorganic layer 220 away from the encapsulation layer form the first organic layer 210 .
  • the first inorganic layer 220 is located on a side of the first organic layer 210 away from the encapsulation layer
  • the touch layer 300 includes a first metal layer 310 , a side of the first metal layer 310 away from the first inorganic layer 220
  • the second insulating layer 320 and the second metal layer 330 located on the side of the second insulating layer 320 away from the first metal layer 310 .
  • step S02 includes:
  • Step S0221 forming a first organic layer 210 on the side of the display device layer away from the encapsulation layer;
  • Step S0222 forming a first inorganic material layer on the side of the first organic layer 210 away from the encapsulation layer, and patterning the first inorganic material layer to form a first body portion 221 and a first opening.
  • Step S03 includes:
  • Step S0311 forming a first metal material layer on the side of the first inorganic material layer away from the first organic layer 210 , and at least part of the metal material enters the first opening to form the first filling part 222 , the first filling part 222 and the first body part 221 together form the first inorganic layer 220 .
  • Step S0312 patterning the first metal material layer to form a first metal layer 310 .
  • Step S0313 forming a second insulating layer 320 on the side of the first metal layer 310 away from the first inorganic layer 220 .
  • Step S0314 forming a second metal material layer on the side of the second insulating layer 320 away from the first metal layer 310 , and patterning the second metal material layer to form a second metal layer 330 .
  • step S03 includes:
  • Step S0321 forming a first metal material layer on the side of the first inorganic material layer away from the first organic layer 210 .
  • the orthographic projection of the first metal layer 310 on the first inorganic layer 220 does not completely cover the first filling part 222 , at least part of the metal material enters the first opening to form part of the first filling part 222 .
  • Step S0322 patterning the first metal material layer to form a first metal layer 310;
  • Step S0323 forming a second organic material layer on the side of the first metal layer 310 away from the first inorganic layer 220, at least part of the second organic material enters the first opening to form the first filling part 222, the first filling part 222 and the first filling part 222
  • the body parts 221 together form the first inorganic layer 220 .
  • the orthographic projection of the first metal layer 310 on the first inorganic layer 220 does not completely cover the first filling part 222 , at least part of the second organic material enters the first opening to form another part of the first filling part 222 .
  • the material of a part of the first filling part 222 is a metal material and is the same as the material of the first metal layer 310
  • the material of another part of the first filling part 222 is an organic material and the material of the second organic material is the same.
  • Step S0324 forming a second metal material layer on the side of the second organic layer 321 away from the first metal layer 310, and patterning the second metal material layer to form a second metal layer 330.
  • the second insulating layer 320 further includes a second inorganic layer 322, and the second inorganic layer 322 includes a second body part 322a and a second filling part 322b.
  • the second inorganic layer 322 is disposed on the side of the second organic layer 321 away from the first metal layer 310 .
  • the method further includes forming a second inorganic material layer on the second organic layer 321, and patterning the second inorganic material layer to form the second body portion 322a and the second opening.
  • a second metal material layer is formed on the side of the second organic layer 321 away from the first metal layer 310, at least part of the metal material enters the second opening to form a second filling portion 322b, and the second metal material layer is patterned
  • the second metal layer 330 is formed by the chemical treatment.
  • the second inorganic layer 322 is disposed on the side of the second organic layer 321 facing the first metal layer 310, then after step S0222, the method further includes: forming a filling material on the first inorganic material layer layer, the filling material layer is patterned, and the filling material enters the first opening to form the first filling part 222 .
  • the method further includes forming a second inorganic material layer on the first metal layer 310, and patterning the second inorganic material layer to form a second body portion 322a and a second opening.
  • a second organic material layer is formed on the side of the second inorganic layer 322 away from the first metal layer 310, and at least part of the second organic material enters the second opening to form a second filling part 322b, the second filling part 322b and the second filling part 322b.
  • the two body portions 322a together form the second inorganic layer 322 .

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Abstract

本申请实施例提供一种显示面板及显示装置，显示面板具有弯折区和位于弯折区在显示面板长度方向上两侧的展平区，显示面板包括：显示结构层；第一绝缘层，位于显示结构层的一侧，第一绝缘层包括层叠设置的第一有机层和第一无机层，第一无机层包括第一本体部和至少一个第一填充部，第一填充部的结构刚度小于第一本体部的结构刚度，第一填充部位于弯折区；触摸层，位于第一绝缘层背离封装层的一侧。本申请实施例的显示面板能够在保证其具有良好的弯折性能的前提下，改善显示面板制造过程中金属残留导致的可靠性差的问题。

Description

显示面板及显示装置
相关申请的交叉引用
本申请要求享有于2020年12月02日提交的名称为“显示面板及显示装置”的中国专利申请第202011391320.6号的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及显示技术领域，具体涉及一种显示面板及显示装置。
背景技术
有机发光二极管(Organic Light-Emitting Diode；OLED)是主动发光器件。与传统的液晶显示(Liquid Crystal Display；LCD)显示方式相比，OLED显示技术无需背光灯，具有自发光的特性。OLED采用较薄的有机材料膜层和玻璃基板，当有电流通过时，有机材料就会发光。因此OLED显示面板能够显著节省电能，可以做得更轻更薄，比LCD显示面板耐受更宽范围的温度变化，而且可视角度更大。OLED显示面板有望成为继LCD之后的下一代平板显示技术，是目前平板显示技术中受到关注最多的技术之一。
可弯折、折叠的主动矩阵有机发光二极管(AMOLED；Active-matrix organic light-emitting diode)柔性显示面板是目前显示产业技术、市场的趋势。与AMOLED柔性显示面板匹配的触摸层可通过手指、触控笔等实现信息的输入。触摸层中通常包括有机材料层和金属层，有机材料与金属工艺匹配性差，导致断路引发触控不良。
发明内容
本申请实施例提供一种显示面板及显示装置，旨在解决显示面板中金 属残留导致的可靠性差的问题。
本申请第一方面的实施例提供了一种显示面板，一种显示面板，具有弯折区和在所述显示面板长度方向上位于所述弯折区两侧的展平区，所述显示面板包括：显示结构层；第一绝缘层，位于所述显示结构层的一侧，所述第一绝缘层包括层叠设置的第一有机层和第一无机层，所述第一无机层包括第一本体部和位于所述弯折区的至少一个第一填充部，所述第一填充部的结构刚度小于所述第一本体部的结构刚度；触摸层，位于所述第一绝缘层背离所述显示结构层的一侧。
本申请第二方面的实施例还提供了一种显示装置，包括上述显示面板。
在本申请实施例提供的显示面板中，显示面板包括显示结构层、第一绝缘层和触摸层。第一绝缘层中设置有第一无机层和第一有机层，通过设置第一无机层，能够改善有机层与触摸层中的金属层粘附性能差，容易引起功能不良的问题，改善触摸层中金属残留导致的可靠性差的问题。第一无机层包括第一本体部和第一填充部，第一填充部的刚度较小，且第一填充部位于弯折区，通过设置第一填充部能够改善第一无机层的弯折性能，进而改善第一无机层对显示面板弯折性能的影响，保证显示面板具有良好的弯折性能。因此本申请实施例的显示面板能够在保证其具有良好的弯折性能的前提下，改善显示面板中金属残留导致的可靠性差的问题。
附图说明
图1是本申请第一方面实施例提供的一种显示面板的结构示意图；
图2是本申请第一方面实施例提供的一种显示面板的局部剖视图；
图3是本申请第一方面实施例提供的一种显示面板的部分层结构示意图；
图4是本申请第一方面实施例提供的一种显示面板的部分层结构剖视图；
图5是本申请第一方面另一实施例提供的一种显示面板的部分层结构剖视图；
图6是本申请第一方面另一实施例提供的一种显示面板的剖视图；
图7是本申请第一方面又一实施例提供的一种显示面板的剖视图；
图8是本申请第一方面再一实施例提供的一种显示面板的剖视图；
图9是本申请第一方面还一实施例提供的一种显示面板的剖视图；
图10是本申请第一方面还一实施例提供的一种显示面板的剖视图；
图11是本申请第二方面实施例提供的一种显示面板的制备方法流程示意图；
图12是本申请第二方面另一实施例提供的一种显示面板的制备方法流程示意图；
图13是本申请第二方面还一实施例提供的一种显示面板的制备方法流程示意图；
图14是本申请第二方面又一实施例提供的一种显示面板的制备方法流程示意图。
具体实施方式
可弯折、折叠的AMOLED柔性显示面板是目前显示产业技术、市场的趋势。与AMOLED柔性显示面板匹配的触摸层可通过手指、触控笔等实现信息的输入。触摸层中通常包括有机材料层和金属层。
发明人通过研究发现，当有机层直接与金属层相互接触时，有机层和金属层之间易发生分离引起功能不良的问题。进一步研究发现，一方面由于有机材料料吸水性强，有机材料的含水量较高，金属材料例如金属Al和含金属AL的金属化合物在有机材料层上成膜后，Al在成膜之后的刻蚀工艺中易与水氧反应生成不易刻蚀的Al 2O 3等物质。另一方面，有机材料的一些官能团也易与活泼金属(例如Al)反应生成不易刻蚀的物质。上述两方面会导致不易刻蚀的物质残留在有机材料层表面，导致有机材料层和金属材料层之间的粘附性能差，后续使用或测试过程中有机材料层和金属材料层之间易发生相互分离而引起功能不良。
为了解决上述技术问题，提出了本申请。为了更好地理解本申请，下面结合图1至图14对本申请实施例的显示面板10、显示装置及显示面板 10的制备方法进行详细描述。
如图1所示，显示面板10的显示区AA具有弯折区AA1和在显示面板10长度方向(图1中的X方向)上位于弯折区AA1两侧的展平区AA2，显示面板10能够通过弯折区AA1在弯折状态和展平状态之间转变。在弯折状态，两个展平区AA2之间的夹角小于180度，在展平状态，两个展平区AA2之间的夹角为180度。图1中以点划线示出展平区AA2和弯折区AA1之间的分界线，点划线并不构成对本申请实施例的显示面板10结构上的限定。
显示面板10还包括非显示区NA，非显示区NA可以位于显示区AA的至少一侧，或者非显示区NA位于显示区AA的周侧。
如图2所示，本申请实施例提供的显示面板10包括：显示结构层100；第一绝缘层200，位于显示结构层100的一侧，第一绝缘层200包括层叠设置的第一有机层210和第一无机层220，第一无机层220包括第一本体部221和第一填充部222，第一填充部222的结构刚度小于第一本体部221的结构刚度，第一填充部222位于弯折区AA1；触摸层300，位于第一绝缘层200背离显示结构层100的一侧。
发明人通过研究发现，无机材料相对有机材料吸水性极弱，无机材料层的含水量较低，金属材料层和无机材料层相互接触时不易产生金属氧化物等残留物。且无机材料也不会存在官能团与金属材料相互反应生成不易刻蚀物质的问题。
在本申请实施例提供的显示面板10设置第一无机层220，能够改善有机材料与触摸层300中的金属材料层粘附性能差，容易引起功能不良的问题，改善触摸层300中金属残留导致的可靠性差的问题。设置第一填充部222能够改善第一无机层220的弯折性能，进而改善第一无机层220对显示面板10弯折性能的影响，保证显示面板10具有良好的弯折性能。因此本申请实施例的显示面板10能够在保证其具有良好的弯折性能的前提下，改善显示面板10中金属残留导致的可靠性差的问题。
显示结构层100例如还包括显示器件层和封装层，第一绝缘层200位于封装层背离显示器件层的一侧。可选的，显示结构层100还包括位于显 示器件层背离封装层一侧的驱动器件层。驱动器件层例如包括用于驱动显示面板10显示的驱动电路。可选的，驱动电路包括薄膜晶体管、扫描电路和数据电路等。可选的，显示器件层包括第一电极、发光结构层和第二电极，发光结构层包括像素定义层、设置与像素定义层的像素开口和位于像素开口内的发光结构。可选的，封装层包括层叠设置的有机层和无机层等。
第一绝缘层200还可以由显示区AA延伸至非显示区NA。触摸层300由显示区AA延伸至非显示区NA，且触摸层300中的金属层在非显示区NA与显示结构层100的金属层相互连接，以使触摸层300中的金属层通过显示结构层100中的金属层与外部器件电连接并传输信息。
第一无机层220的第一填充部222的个数不限定。第一填充部222可以设置为多个并沿长度方向间隔分布。如此设置，能够进一步提高显示面板10的柔性，改善显示面板10的弯折性能。
在长度方向上相邻的两个第一填充部222之间的间距可以为1μm～10μm。当相邻的两个第一填充部222之间的间距在上述范围之内时，既能够避免相邻两个第一填充部222之间的距离过远，导致第一本体部221的尺寸过大而影响显示面板10的弯折性能，还能够避免相邻两个第一填充部222之间的间距过小，导致弯折区AA1内的部分显示面板10结构刚度不足而易发生损坏。为了更清楚的展示第一无机层220的结构，图2中省略了部分第一填充部222。
可第一填充部222在长度方向上的尺寸为1μm～10μm。当第一填充部222在长度方向上的尺寸在上述范围之内时，既能够避免第一填充部222在长度方向上的尺寸过小，导致第一本体部221的尺寸过大而影响显示面板10的弯折性能。还能够避免第一填充部222在长度方向上的延伸尺寸过大，导致弯折区AA1内的部分显示面板10结构刚度不足而易发生损坏。
请参阅图3，为了更清楚的展示第一无机层220的结构，图3中仅示出第一无机层220及显示结构层100。
根据本申请实施例提供的显示面板10，第一填充部222沿宽度方向 (图3中的Y方向)延伸成型，能够提高显示面板10在宽度方向上的结构刚度。
第一填充部222沿宽度方向贯穿第一无机层220设置，进一步降低显示面板10在长度方向上的结构刚度，提高显示面板10的弯折性能，便于显示面板10在弯折状态和展平状态之间转变。
第一填充部222在厚度方向上的尺寸有多种。参照图2，第一填充部222在厚度方向上贯穿第一无机层220设置，能够进一步降低显示面板10在长度方向上的结构刚度，提高显示面板10的弯折性能，便于显示面板10在弯折状态和展平状态之间转变。
如图4和图5所示，在本申请实施例提供的显示面板10中，第一填充部222的截面形状为矩形、梯形、半圆形及其结合中的至少一者。第一填充部222的截面形状为第一填充部222在厚度方向(图4中的Z方向)与长度方向所在平面上的截面。
可选的，第一填充部222的截面在厚度方向上尺寸不一致。例如，第一填充部222具有在厚度方向上分布的第一分部222a和第二分部222b，第一分部222a在长度方向上的尺寸大于第二分部222b在长度方向上的尺寸。那么当显示面板10在弯折状态形成弯折开口，在弯折状态下，第一分部222a位于第二分部222b远离弯折开口的一侧。即在图4所示的视图方向中，当显示面板10在长度方向上的两端沿两箭头所示方向向下弯折时，第一分部222a位于第二分部222b背离显示结构层100的一侧。图4和图5中以虚线示出其中一个第一填充部222的第一分部222a和第二分部222b的分界线，虚线并不构成对本申请实施例显示面板10结构上的限定。
在这些可选的实施例中，第一分部222a在长度方向上的尺寸大于第二分部222b在长度方向上的尺寸，第一分部222a具有较好的柔韧性。在弯折状态下，第一分部222a位于第二分部222b远离弯折开口的一侧，能够进一步提高显示面板10的弯折性能。
第一无机层220和第一有机层210的设置位置不做限定，第一无机层220例如可以设置于第一有机层210朝向封装层的一侧。那么第一填充部 222的材料可以与第一有机层210的材料相同。
在这些可选的实施例中，在显示面板10的成型过程中，可以在封装层上形成无机材料层，对有机材料层进行图案化形成第一本体部221和第一开口。第一开口的设置位置和第一填充部222的设置位置相同。然后继续在无机材料层上涂覆有机材料，至少部分有机材料进入第一开口形成第一填充部222，另一部分形成第一有机层210。因此当第一填充部222的材料与第一有机层210的材料相同时，无需增加单独形成第一填充部222的工艺，能够简化显示面板10的成型工艺，提高显示面板10的成型效率。
可选的，第一有机层210的材料包括聚酰亚胺、聚丙烯酸酯、聚醚酰亚胺、聚对苯二甲酸乙二醇酯、聚萘二甲酸乙二酯中的一种或多种。那么第一填充部222的材料可以为聚酰亚胺、聚丙烯酸酯、聚醚酰亚胺、聚对苯二甲酸乙二醇酯、聚萘二甲酸乙二酯中的一种或多种。第一无机层220的材料可以为氮化硅、氧化硅、氮氧化硅中的一种或多种。
如图2所示，触摸层300包括第一金属层310、第二绝缘层320及位于第一金属层310远离第一绝缘层200一侧的第二金属层330。第二绝缘层320位于第一金属层310和第二金属层330之间且包括第二有机层321。
如图6所示，第一无机层220可以设置于第一有机层210朝向触摸层300的一侧，那么第一填充部222的材料可以为第一金属层310的金属材料和/或第二绝缘层320的绝缘材料。
当第一无机层220位于第一有机层210朝向触摸层300的一侧时，在显示面板10的成型过程中，可以在第一有机层210上形成无机材料层，对无机材料层进行图案化处理形成第一本体部221和第一开口。然后继续在无机材料层上形成第一金属层310和第一绝缘层200，当第一金属层310的分布面积较大，第一金属层310能够覆盖至少部分第一开口时，至少部分第一金属层310的材料进入第一开口形成第一填充部222。当第一金属层310为桥接金属层，第一金属层310的分布面积较小，第一金属层310未覆盖第一开口或未完全覆盖所有的第一开口时，至少部分第一绝缘 层200的材料进入第一开口形成第一填充部222。
第一金属层310和第二金属层320的材料可以为Ti、Al、Mo、Ag、Cu、Ni其中的一种或多种。当至少部分第一填充部222由金属材料形成时，第一填充部222的材料可以为Ti、Al、Mo、Ag、Cu、Ni其中的一种或多种。
在触摸层300中还可以设置有机材料层以避免产生金属残留物。
如图7所示，第二绝缘层320包括第二无机层322，第二无机层322包括第二本体部322a和第二填充部322b，第二填充部322b结构刚度小于第二本体部322a的结构刚度，第二填充部322b位于弯折区AA1。
在这些可选的实施例中，通过设置第二无机层322能够改善第二有机层321和第一金属层310、及第二金属层330之间的兼容性，避免第二有机层321与第一金属层310和/或第二金属层330的接触表面产生金属残留物而导致功能不良。此外，第二无机层322上设置有第二填充部322b，第二填充部322b的结构刚度较低，能够保证显示面板10具有良好的弯折性能。
第二无机层322和第二有机层321的相对位置设置方式有多种。如图8所示，第二无机层322可以设置于第二有机层321靠近第二金属层330的一侧。或者，在其他实施例中，第二无机层322可以设置与第二有机层321靠近第一金属层310的一侧。
当第一无机层220位于第一有机层210靠近触摸层300的一侧时，可以利用单独的工艺步骤在第一无机层220上形成第一填充部222。
参阅图9和图10，当第一金属层310的分布面积较大而能够完全覆盖第一无机层220的第一开口时，可以令至少部分第一金属层310的材料形成第一填充部222。
当第一金属层310的分布面积较小而未覆盖第一开口或不能够完全覆盖第一无机层220上的第一开口时，第二无机层322位于第二有机层321远离第一金属层310的一侧，令至少部分第二有机层321的材料形成第二填充部322b，第一有机层210形成第一填充部222。
第二填充部322b的个数不做限定。第二填充部322b可以设置为多 个，多个第二填充部322b沿长度方向间隔分布。能够进一步提高显示面板10的柔性，改善显示面板10的弯折性能。
在长度方向上相邻的两个第二填充部322b之间的间距例如为1μm～10μm。当相邻的两个第二填充部322b之间的间距在上述范围之内时，既能够避免相邻两个第二填充部322b之间的距离过远，导致第二本体部322a的尺寸过大而影响显示面板10的弯折性能。还能够避免相邻两个第二填充部322b之间的间距过小，导致弯折区AA1内的部分显示面板10结构刚度不足而易发生损坏。
可选的，第二填充部322b在长度方向上的尺寸为1μm～10μm。当第二填充部322b在长度方向上的尺寸在上述范围之内时，既能够避免第二填充部322b在长度方向上的尺寸过小，导致第二本体部322a的尺寸过大而影响显示面板10的弯折性能。还能够避免第二填充部322b在长度方向上的尺寸过大，导致弯折区AA1内的部分显示面板10结构刚度不足而易发生损坏。
第二填充部322b沿宽度方向延伸成型，能够提高显示面板10在宽度方向上的结构刚度。可选的，第二填充部322b沿宽度方向贯穿第二无机层322设置，能够进一步降低显示面板10在长度方向上的结构刚度，提高显示面板10的弯折性能，便于显示面板10在弯折状态和展平状态之间转变。
第二填充部322b在厚度方向上的尺寸有多种，例如第二填充部322b在厚度方向上贯穿第二无机层322设置，能够进一步降低显示面板10在长度方向上的结构刚度，提高显示面板10的弯折性能，便于显示面板10在弯折状态和展平状态之间转变。
可选的，第二填充部322b的截面形状为矩形、梯形、半圆形及其结合中的至少一者。第二填充部322b的截面形状为第二填充部322b在厚度方向与长度方向所在平面上的截面。
可选的，第二填充部322b的截面在厚度方向上尺寸不一致。例如，第二填充部322b具有在厚度方向上分布的第三分部(图中未示出)和第四分部(图中未示出)，第三分部在长度方向上的尺寸大于第四分部在长 度方向上的尺寸。那么当显示面板10在弯折状态形成弯折开口，在弯折状态下，第三分部位于第四分部远离弯折开口的一侧。
在这些可选的实施例中，第三分部在长度方向上的尺寸大于第四分部在长度方向上的尺寸，第三分部具有较好的柔韧性。在弯折状态下，第三分部位于第四分部远离弯折开口的一侧，能够进一步提高显示面板10的弯折性能。
在一些实施例中，显示面板10例如还包括防护层400，设置于触摸层300远离第一绝缘层200的一侧。防护层400用于向触摸层300提供保护。可选的，防护层400的材料为有机材料，能够改善显示面板10的弯折性能。
本申请第二方面的实施例提供一种显示装置，包括上述任一第一方面的显示面板10。由于本申请实施例的显示装置包括上述的显示面板10，因此本申请实施例的显示装置具有上述显示面板10所具有的有益效果，在此不再赘述。
本申请实施例中的显示装置包括但不限于手机、个人数字助理(Personal Digital Assistant，简称：PDA)、平板电脑、电子书、电视机、门禁、智能固定电话、控制台等具有显示功能的设备。
请一并参阅图11，本申请第三方面的实施例提供的显示面板10制备方法，包括：
步骤S01：提供一种显示结构层100。
显示结构层100例如包括显示器件层和封装层。
步骤S02：在显示结构层100的一侧形成第一绝缘层200。
当显示结构层100例如包括显示器件层和封装层时，在封装层背离显示器件层的一侧形成第一绝缘层200。
第一绝缘层200包括层叠设置的第一有机层210和第一无机层220，第一无机层220包括第一本体部221和第一填充部222，第一填充部222的结构刚度小于第一本体部221的结构刚度，第一填充部222位于弯折区AA1。
步骤S03：在第一绝缘层200背离显示结构层100的一侧形成触摸层 300。
根据本申请实施例制备的显示面板10，第一绝缘层200中设置有第一无机层220和第一有机层210，通过设置第一无机层220，能够改善有机材料与触摸层300中的金属层粘附性能差，容易引起功能不良的问题，改善触摸层300中金属残留导致的可靠性差的问题。第一无机层220包括第一本体部221和第一填充部222，第一填充部222的刚度较小，且第一填充部222位于弯折区AA1，通过设置第一填充部222能够改善第一无机层220的弯折性能，进而改善第一无机层220对显示面板10弯折性能的影响，保证显示面板10具有良好的弯折性能。因此本申请实施例的显示面板10能够在保证其具有良好的弯折性能的前提下，改善显示面板10中金属残留导致的可靠性差的问题。
请一并参阅图12，步骤S02的设置方式有多种，在一些可选的实施例中，第一无机层220位于第一有机层210朝向封装层的一侧，步骤S02包括：
步骤S0211：在显示器件层背离封装层的一侧形成第一无机材料层，对第一无机材料层进行图案化处理形成第一本体部221和第一开口。
步骤S0212：在第一无机材料层背离封装层的一侧设置有机材料，至少部分有机材料进入第一开口形成第一填充部222，第一填充部222和第一本体部221共同形成第一无机层220，其他位于第一无机层220背离封装层一侧的有机材料形成第一有机层210。
在另一些实施例中，第一无机层220位于第一有机层210背离封装层的一侧，触摸层300包括第一金属层310、位于第一金属层310背离第一无机层220一侧的第二绝缘层320及位于第二绝缘层320背离第一金属层310一侧的第二金属层330。
请一并参阅图13，第一金属层310的分布面积较大而在第一无机层220上的正投影覆盖所有第一填充部222，那么步骤S02包括：
步骤S0221：在显示器件层背离封装层的一侧形成第一有机层210；
步骤S0222：在第一有机层210背离封装层的一侧形成第一无机材料层，对第一无机材料层进行图案化处理形成第一本体部221及第一开口。
步骤S03包括：
步骤S0311：在第一无机材料层背离第一有机层210的一侧形成第一金属材料层，至少部分金属材料进入第一开口形成第一填充部222，第一填充部222和第一本体部221共同形成第一无机层220。
步骤S0312：对第一金属材料层进行图案化处理形成第一金属层310。
步骤S0313：在第一金属层310背离第一无机层220的一侧形成第二绝缘层320。
步骤S0314：在第二绝缘层320背离第一金属层310的一侧形成第二金属材料层，对第二金属材料层进行图案化处理形成第二金属层330。
请一并参阅图14，第一金属层310的分布面积较小而在第一无机层220上的正投影未覆盖或者未完全覆盖第一填充部222。第二绝缘层320包括第二有机层321，那么步骤S03包括：
步骤S0321：在第一无机材料层背离第一有机层210的一侧形成第一金属材料层。
可选的，当第一金属层310在第一无机层220上的正投影未完全覆盖第一填充部222时，至少部分金属材料进入第一开口形成部分第一填充部222。
步骤S0322：对第一金属材料层进行图案化处理形成第一金属层310；
步骤S0323：在第一金属层310背离第一无机层220的一侧形成第二有机材料层，至少部分第二有机材料进入第一开口形成第一填充部222，第一填充部222和第一本体部221共同形成第一无机层220。
可选的，当第一金属层310在第一无机层220上的正投影未完全覆盖第一填充部222时，至少部分第二有机材料进入第一开口形成另一部分第一填充部222。部分第一填充部222的材料为金属材料并与第一金属层310的材料相同，另一部分第一填充部222的材料为有机材料并与第二有机材料的材料相同。
步骤S0324：在第二有机层321背离第一金属层310的一侧形成第二 金属材料层，对第二金属材料层进行图案化处理形成第二金属层330。
在又一些可选的实施例中，第二绝缘层320还包括第二无机层322，第二无机层322包括第二本体部322a和第二填充部322b。第二无机层322设置于第二有机层321背离第一金属层310的一侧。
例如在步骤S0323之后还包括在第二有机层321上形成第二无机材料层，对第二无机材料层进行图案化处理形成第二本体部322a和第二开口。在步骤S0324中，在第二有机层321背离第一金属层310的一侧形成第二金属材料层，至少部分金属材料进入第二开口形成第二填充部322b，对第二金属材料层进行图案化处理形成第二金属层330。
在还一些可选的实施例中，第二无机层322设置于第二有机层321朝向第一金属层310的一侧，那么在步骤S0222之后还包括：在第一无机材料层上形成填充材料层，对填充材料层进行图案化处理，令填充材料进入第一开口形成第一填充部222。
在步骤S0323之前还包括在第一金属层310上形成第二无机材料层，对第二无机材料层进行图案化处理形成第二本体部322a和第二开口。步骤S0323中，在第二无机层322背离第一金属层310的一侧形成第二有机材料层，至少部分第二有机材料进入第二开口形成第二填充部322b，第二填充部322b和第二本体部322a共同形成第二无机层322。

Claims (20)

  1. 一种显示面板，具有弯折区和在所述显示面板长度方向上位于所述弯折区两侧的展平区，所述显示面板包括：
    显示结构层；
    第一绝缘层，位于所述显示结构层的一侧，所述第一绝缘层包括层叠设置的第一有机层和第一无机层，所述第一无机层包括第一本体部和位于所述弯折区的至少一个第一填充部，所述第一填充部的结构刚度小于所述第一本体部的结构刚度；
    触摸层，位于所述第一绝缘层背离所述显示结构层的一侧。
  2. 根据权利要求1所述的显示面板，其中，所述至少一个第一填充部沿所述长度方向间隔分布的多个。
  3. 根据权利要求2所述的显示面板，其中，相邻两个所述第一填充部之间的间隔距离为1μm～10μm。
  4. 根据权利要求2所述的显示面板，其中，所述第一填充部在所述长度方向上的尺寸为1μm～10μm。
  5. 根据权利要求1所述的显示面板，其中，所述第一填充部的截面形状为矩形、梯形、半圆形及其结合中的至少一者。
  6. 根据权利要求1所述的显示面板，其中，
    所述第一填充部沿所述显示面板的厚度方向贯穿所述第一无机层设置；和/或
    所述第一填充部在所述显示面板的宽度方向上贯穿所述第一无机层设置。
  7. 根据权利要求1所述的显示面板，其中，所述第一无机层位于所述第一有机层朝向所述显示结构层的一侧。
  8. 根据权利要求7所述的显示面板，其中，所述第一填充部的材料和所述第一有机层的材料相同。
  9. 根据权利要求1所述的显示面板，所述第一无机层位于所述第一有机层朝向所述触摸层的一侧。
  10. 根据权利要求9所述的显示面板，其中，所述第一填充部的材料包括金属材料和/或绝缘材料。
  11. 根据权利要求1所述的显示面板，其中，所述触摸层包括：第一金属层、第二绝缘层以及位于所述第一金属层背离所述第一绝缘层一侧的第二金属层，所述第二绝缘层位于所述第一金属层和所述第二金属层之间并包括第二有机层。
  12. 根据权利要求11所述的显示面板，其中，所述第二绝缘层还包括：第二无机层，所述第二无机层包括第二本体部和第二填充部，所述第二填充部的结构刚度小于所述第二本体部的结构刚度，所述第二填充部位于所述弯折区。
  13. 根据权利要求12所述的显示面板，其中，多个所述第二填充部沿所述长度方向间隔分布。
  14. 根据权利要求12所述的显示面板，其中，相邻两个所述第二填充部之间的间隔距离为1μm～10μm。
  15. 根据权利要求12所述的显示面板，其中，所述第二填充部沿所述显示面板的厚度方向贯穿所述第二无机层设置；和/或
    所述第二填充部在所述显示面板的宽度方向上贯穿所述第二无机层设置。
  16. 根据权利要求12所述的显示面板，其中，所述第二填充部在所述长度方向上的延伸尺寸为1μm～10μm。
  17. 根据权利要求12所述的显示面板，其中，所述第二填充部在垂直于所述显示面板厚度方向的平面上的截面形状为矩形、梯形、半圆形及其结合中的至少一者。
  18. 根据权利要求12所述的显示面板，其中，所述第二无机层位于所述第二有机层朝向所述第一金属层的一侧，或者
    所述第二无机层位于所述第二有机层背离所述第一金属层的一侧。
  19. 根据权利要求12所述的显示面板，其中，所述第二填充部的材料和所述第二金属层的材料相同。
  20. 一种显示装置，包括权利要求1-19任一项所述的显示面板。
PCT/CN2021/119846 2020-12-02 2021-09-23 显示面板及显示装置 WO2022116655A1 (zh)

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