[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

WO2022179162A1 - 可折叠显示装置及其制作方法 - Google Patents

可折叠显示装置及其制作方法 Download PDF

Info

Publication number
WO2022179162A1
WO2022179162A1 PCT/CN2021/128100 CN2021128100W WO2022179162A1 WO 2022179162 A1 WO2022179162 A1 WO 2022179162A1 CN 2021128100 W CN2021128100 W CN 2021128100W WO 2022179162 A1 WO2022179162 A1 WO 2022179162A1
Authority
WO
WIPO (PCT)
Prior art keywords
area
display panel
adhesive
adhesive layer
layer
Prior art date
Application number
PCT/CN2021/128100
Other languages
English (en)
French (fr)
Inventor
张燚
龚伟
陈伟
郝晓东
魏向东
毕丹炀
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/802,755 priority Critical patent/US20240206281A1/en
Publication of WO2022179162A1 publication Critical patent/WO2022179162A1/zh

Links

Images

Classifications

    • 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
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • 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
    • 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
    • H10K59/1201—Manufacture or treatment
    • 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
    • H10K59/871—Self-supporting sealing arrangements
    • 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
    • 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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present application relates to the field of display technology, and in particular, to a foldable display device and a manufacturing method thereof.
  • foldable display devices With the continuous development of flexible display technology, foldable display devices have also received extensive attention, and foldable display devices have become a popular research direction due to their advantages of increasing the display area, and being convenient for folding, storage and transportation.
  • a foldable display device including:
  • the display panel includes a display area, a binding area, and a bending area between the display area and the binding area;
  • a first adhesive layer disposed on the side away from the light-emitting side of the display panel
  • a support layer disposed on the side of the first adhesive layer away from the display panel
  • the orthographic projection of the support layer and the first adhesive layer on the display panel is located in the display area
  • the first adhesive layer includes a first adhesive portion and a second adhesive portion, the first adhesive portion is arranged on the side of the second adhesive portion away from the bending area, and the first adhesive portion is The elastic modulus of the second bonding portion is greater than the elastic modulus of the first bonding portion.
  • the elastic modulus of the second bonding portion is greater than or equal to 200KPa, and the elastic modulus of the first bonding portion is less than or equal to 100KPa.
  • the material of the first adhesive layer is optically transparent adhesive, and the materials of the first adhesive portion and the second adhesive portion are doped with different additives.
  • the foldable display device has a folding area, and the folding area is located in the area where the first adhesive part is located.
  • the support layer has a plurality of hollow structures.
  • the foldable display device further includes: a polarizer, a second adhesive layer and a cover plate that are sequentially stacked on the light-emitting side of the display panel, the polarizer, the second adhesive layer and the cover plate.
  • the cover plate is disposed away from the display panel in sequence.
  • the binding area is located on the opposite side of the light-emitting side of the display panel
  • the display panel includes a panel body, a first back film and a second back film; the panel body is distributed in the display area, the binding area and the bending area; the first back film is located in the The display area is located between the panel body and the first adhesive layer; the second back film is located in the binding area and located on the side of the panel body facing the support layer.
  • the foldable display device further includes a spacer portion and a protective layer
  • the spacer part is located in the binding area and between the second back film and the support layer;
  • the protective layer is located in the bending region, and is located on a side of the display panel away from the first adhesive layer.
  • a method for manufacturing a foldable display device including:
  • a display panel is provided; the display panel includes a display area, a binding area and a bending area between the display area and the binding area;
  • the orthographic projection of the support layer and the first adhesive layer on the display panel is located in the display area;
  • the first adhesive layer includes a first adhesive part and a second adhesive part, so
  • the first bonding portion is disposed on a side of the second bonding portion away from the bending region, and the elastic modulus of the second bonding portion is greater than the elastic modulus of the first bonding portion.
  • the method further includes:
  • the polarizer and the cover plate are bonded through the second adhesive layer.
  • FIG. 1 shows a schematic structural diagram of a foldable display device in the related art
  • FIG. 2 shows a schematic structural diagram of a foldable display device in an unfolded state according to an embodiment of the present application
  • FIG. 3 shows a schematic structural diagram of a foldable display device in a folded state according to an embodiment of the present application
  • Fig. 4 shows the plan structure diagram of the first adhesive layer in the embodiment of the present application
  • FIG. 5 shows a flowchart of a method for manufacturing a foldable display device according to an embodiment of the present application.
  • a foldable display device includes a support layer 11 , a first adhesive layer 12 , a display panel 13 , a polarizer 14 , a second adhesive layer 15 , a cover plate 16 , and a spacer portion 17 and the protective layer 18, wherein the display panel 13 includes a panel body 132, a first back film 131 and a second back film 133, and the first back film 131 and the support layer 11 in the display panel 13 pass through the first adhesive layer 12 Adhesion, the elastic modulus at each region of the first adhesive layer 12 is the same.
  • the phenomenon of layer staggering will occur between the various film layers in the foldable display device, and the supporting layer 11 will also be staggered to the outside relative to the display panel 13, and due to the first If the elastic modulus of each region of the adhesive layer 12 is the same, after the support layer 11 is staggered to the outside relative to the display panel 13, the amount of staggered layers on both sides of the support layer 11 will be approximately equal, that is, the support layer 11 is facing the display panel 13.
  • the amount of lamination in the direction of the bending area C1 of the panel 13 is substantially equal to the amount of lamination in the direction of the supporting layer 11 away from the bending area C1 of the display panel 13 .
  • the supporting layer 11 is facing the bending area C1 of the display panel 13 . If the amount of staggered layers in the direction is large, the bending area C1 of the display panel 13 is easily damaged by the support layer 11 .
  • the supporting layer 11 is designed to be further away from the bending area C1 of the display panel 13 , that is, the edge of the supporting layer 11 .
  • the distance from the bending area C1 of the display panel 13 is increased.
  • this method avoids the risk of being injured by the bending area C1
  • the edge of the support layer 11 and the bending area C1 of the display panel 13 are separated from each other. If the distance between them is too large, the support layer 11 will not support the bending region C1 enough, thereby affecting the bending shape of the bending region C1, and further causing problems such as abnormal display.
  • the elastic modulus of the second bonding portion near the bending area is set to be greater than that of the first bonding portion far from the bending area.
  • FIG. 2 a schematic structural diagram of a foldable display device according to an embodiment of the present application in an unfolded state is shown
  • FIG. 3 is a schematic structural diagram of a foldable display device according to an embodiment of the present application in a folded state.
  • the embodiment of the present application provides a foldable display device, including: a display panel 21, the display panel 21 includes a display area A2, a binding area B2, and a bending area C2 (ie, a bending area C2 located between the display area A2 and the binding area B2) Pad Bending area); the foldable display device further includes: a first adhesive layer 22 arranged on the light-emitting side away from the display panel 21, and a support layer 23 arranged on the side away from the display panel 21 of the first adhesive layer 22; wherein, The orthographic projection of the support layer 23 and the first adhesive layer 22 on the display panel 21 is located in the display area A2; the first adhesive layer 22 includes a first adhesive portion 221 and a second adhesive portion 222, and the first adhesive portion 221 It is disposed on the side of the second bonding portion 222 away from the bending region C2 , and the elastic modulus of the second bonding portion 222 is greater than that of the first bonding portion 221 .
  • the display panel 21 is divided into a display area A2, a binding area B2 and a bending area C2 according to the function of each area.
  • the bending area C2 is located between the display area A2 and the binding area B2, and the display area is A2 refers to the screen display area of the display panel 21, and the binding area B2 refers to the area where the display panel 21 and the driver chip are bound. It is bound to the opposite side of the light-emitting side of the display panel 21. Therefore, the display panel 21 needs to be bent.
  • the bending area is the bending area C2, and the surface of the bending area C2 of the display panel 21 is an arc surface.
  • a first adhesive layer 22 is provided on the opposite side of the light-emitting side of the display panel 21 , a support layer 23 is provided on the side of the first adhesive layer 22 away from the display panel 21 , and the first adhesive layer 22 is used for bonding the support layer 23 With the display panel 21, the support layer 23 is used to support the display panel 21 and ensure the bending shape of the bending area C2; and, before the display panel 21 is bound to the driver chip, that is, the binding area B2 of the display panel 21 does not pass through.
  • the orthographic projection of the support layer 23 and the first adhesive layer 22 on the display panel 21 is located in the display area A2, that is, only in the display area of the foldable display device.
  • the support layer 23 and the first adhesive layer 22 are provided in the area A2, and the support layer 23 and the first adhesive layer 22 are not provided in the binding area B2 and the bending area C2 of the foldable display device.
  • the part of the first adhesive layer 22 away from the bending area C2 is called the first adhesive part 221
  • the part of the first adhesive layer 22 close to the bending area C2 is called the second adhesive part 222
  • the elastic modulus of the second bonding portion 222 is set to be larger than the elastic modulus of the first bonding portion 221 .
  • the supporting layer 23 will be more oriented toward the bend away from the display panel 21 .
  • the direction of the folding area C2 is staggered, that is, the staggered amount of the support layer 23 in the direction of the bending area C2 of the display panel 21 is smaller than the amount of the staggered layer in the direction of the supporting layer 23 away from the bending area C2 of the display panel 21, so that the support
  • the amount of layer staggering in the direction of the layer 23 toward the bending area C2 of the display panel 21 is small, so as to avoid the risk of the bending area C2 of the display panel 21 being topped by the supporting layer.
  • the elastic modulus of the second bonding portion 222 is greater than or equal to 200KPa, and the elastic modulus of the first bonding portion 221 is less than or equal to 100KPa.
  • the elastic modulus of the second bonding part 222 can be set to 240Kpa, 300Kpa, etc.
  • the elastic modulus of the first bonding part 221 can be set to 60Kpa, 80Kpa, etc., so that the elastic modulus of the second bonding part 222 The amount is larger than the elastic modulus of the first adhesive portion 221 .
  • the length of the first adhesive portion 221 may be greater than the length of the second adhesive portion 222.
  • the length of the first adhesive portion 221 may also be smaller than the length of the second adhesive portion 222, which is not limited in the embodiment of the present application.
  • the width of the first bonding portion 221 is equal to the width of the second bonding portion 222, at this time, the display area A2 points to the direction of the bending area C2.
  • the vertical direction is parallel to the light emitting surface of the display panel 21 .
  • the material of the first adhesive layer 22 is optically transparent adhesive, and the materials of the first adhesive portion 221 and the second adhesive portion 222 are doped with different additives.
  • the optically clear adhesive is actually OCA (Optically Clear Adhesive) adhesive
  • the material of the first adhesive portion 221 is OCA adhesive doped with the first additive
  • the material of the second adhesive portion 222 The material is OCA glue doped with a second additive, and the first additive and the second additive are different, so that the elastic moduli on both sides of the first adhesive layer 22 are different.
  • the first adhesive layer 22 When making the first adhesive layer 22 , different additives are doped into the OCA glue in the area where the first adhesive part 221 is located and the area where the second adhesive part 222 is located, so that the elasticity of the second adhesive part 222 is improved.
  • the modulus is greater than the elastic modulus of the first adhesive portion 221 . Therefore, when the first adhesive layer 22 is subsequently attached to the opposite side of the light-emitting side of the display panel 21 , it is only necessary to use the original lamination process. , the process does not need to make any changes.
  • the foldable display device has a folding area D2, and the folding area D2 is located in the area where the first adhesive portion 221 is located.
  • the folding area D2 refers to the area that needs to be folded when the foldable display device changes between the unfolded state and the folded state.
  • the light-emitting surface of the display panel 21 in the foldable display device is located on the same plane.
  • the light emitting surfaces of the display panels 21 on both sides of the folded area D2 are disposed opposite to each other.
  • the supporting layer 23 is made to move more toward the side away from the bending region C2.
  • the support layer 23 in the folding area D2, has a plurality of hollow structures.
  • the material of the support layer 23 is a rigid material, such as SUS (stainless steel), since the support layer 23 also needs to be folded when the foldable display device is folded, and the material of the support layer 23 is relatively rigid. Therefore, in order to ensure the support layer 23 can also be folded, it is necessary to set the support layer 23 at the folding area D2 into a plurality of hollow structures, the hollow structures run through the thickness direction of the support layer 23, the thickness direction refers to the vertical direction of the light-emitting surface of the display panel 21, and In the non-folded area of the support layer 23, the support layer 23 does not have a hollow structure.
  • the orthographic projection shape of the hollow structure on the display area A2 of the display panel 21 is a closed figure, such as a circle, a rectangle, a hexagon, etc.
  • the specific number and distribution of the hollow structure at the folding area D2 are implemented in this application. The example does not limit this.
  • the foldable display device further includes: a polarizer 24 , a second adhesive layer 25 and a cover plate 26 that are sequentially stacked on the light-emitting side of the display panel 21 , the polarizer 24 , the second adhesive layer 25 and the cover plate 26 are disposed away from the display panel 21 in sequence.
  • the polarizer 24 is arranged on the light-emitting surface of the display panel 21
  • the second adhesive layer 25 is arranged on the side of the polarizer 24 away from the display panel 21
  • the cover plate 26 is arranged on the second adhesive layer 25 away from the polarizer 24 side.
  • the polarizer 24 and the second adhesive layer 25 are located in the display area A2 of the display panel 21 , the material of the second adhesive layer 25 is OCA glue, and the elastic modulus of each region in the second adhesive layer 25 is the same,
  • the elastic modulus of the second adhesive layer 25 may be equal to the elastic modulus of the first adhesive portion 221 ; the cover plate 26 is not only located in the display area A2 , but also extends to the bending area C2 .
  • the binding area B2 is located on the opposite side of the light-emitting side of the display panel 21; wherein, the display panel 21 includes a panel body 211, a first back film 212 and a second back film 213; the panel body 211 is distributed in the display area A2, the binding area B2 and the bending area C2; the first back film 212 is located in the display area A2, and is located between the panel body 211 and the first adhesive layer 22; the second back film 213 is located in the binding area B2, and is located in the The panel body 211 faces the side of the support layer 23 .
  • the display panel 21 and the driver chip are bound together, and then, by bending the bending area C2, the driver chip is fixed on the opposite side of the light-emitting side of the display panel 21.
  • the binding area B2 is bent to a distance away from the light-emitting side. One side of the display panel 21 on the light-emitting side.
  • the display panel 21 includes a panel body 211, the panel body 211 is an OLED (Organic Light Emitting Diode, organic light-emitting diode) panel, and the panel body 211 includes a substrate substrate, a pixel driving circuit disposed on the substrate substrate, and a pixel driving circuit.
  • the circuit-connected light-emitting device and the encapsulation layer covering the light-emitting device, the base substrate is a flexible substrate; the panel body 211 is distributed in the display area A2, the binding area B2 and the bending area C2.
  • the display panel 21 further includes a first back film 212 and a second back film 213 disposed on the side of the base substrate away from the light-emitting device.
  • the first back film 212 is located in the display area A2, and is located on the panel body 211 and is bonded to the first back film 212.
  • the second back film 213 is located in the binding area B2. After the binding area B2 is bent to the side away from the light emitting side of the display panel 21, the second back film 213 is located in the panel body 211 Facing the side of the support layer 23 , there is no back film in the bending region C2 , that is, there is a spaced area between the first back film 212 and the second back film 213 .
  • the first back film 212 and the second back film 213 can protect the panel body 211 .
  • the foldable display device further includes a spacer portion 27 and a protective layer 28; the spacer portion 27 is located in the binding area B2, and is located between the second back film 213 and the support layer 23; the protective layer 28 is located at The bending area C2 is located on the side of the display panel 21 away from the first adhesive layer 22 .
  • a spacer portion 27 is provided at the binding area B2 of the display panel 21 , and the spacer portion 27 is located on the side of the second back film 213 away from the panel body 211 . Therefore, the binding area B2 is bent through the bending area C2 to The spacer portion 27 is located between the second back film 213 and the support layer 23 after being away from the light-emitting side of the display panel 21 .
  • a protective layer 28 is disposed at the bending area C2 of the display panel 21. After the binding area B2 is bent to the side away from the light-emitting side of the display panel 21 through the bending area C2, the protective layer 28 is located on the display panel 21 away from the first On one side of the adhesive layer 22, in addition, the protective layer 28 also partially extends to the display area A2 and the binding area B2.
  • the protective layer 28 is actually an MCL (Metal Cover Layer) adhesive layer.
  • MCL Metal Cover Layer
  • the protective layer 28 By disposing the protective layer 28 at the bending region C2, the position of the stress neutral layer of the foldable display device is located on the display panel 21.
  • the stress neutral layer is the part where the bending area C2 of the display panel 21 is the least stressed after being bent. Therefore, by providing the protective layer 28, the probability of damage to the display panel 21 can be effectively reduced, and the protective layer 28 can also be Protect the metal traces at the bend area C2.
  • the foldable display device in the embodiment of the present application is an outward-folding display device, that is, when the foldable display device is in a folded state, the light emitting surface of the display panel 21 is exposed to the outside.
  • a foldable display device is any product or component with display and folding functions, such as electronic paper, mobile phones, tablet computers, monitors, notebook computers, and navigators.
  • the elastic modulus of the second bonding portion close to the bending area is set to be greater than that of the first bonding portion far away from the bending area.
  • FIG. 5 a flowchart of a method for manufacturing a foldable display device according to an embodiment of the present application is shown, which may specifically include the following steps:
  • Step 501 providing a display panel; the display panel includes a display area, a binding area, and a bending area located between the display area and the binding area.
  • the display panel 21 is fabricated, and the display panel 21 includes a panel body 211 , a first back film 212 and a second back film 213 .
  • a pixel driving circuit is first formed on the base substrate, then a light-emitting device connected to the pixel driving circuit is formed, and then an encapsulation layer covering the light-emitting device is formed to obtain a panel body 21 , which is distributed in the display area A2 and is bound to The fixed area B2 and the bending area C2, and finally, the first back film 212 and the second back film 213 are formed on the opposite side of the light-emitting side of the panel body 21.
  • the first back film 212 is located in the display area A2, and the second back film is located in the binding area. District B2.
  • Step 502 forming a first adhesive layer on a side away from the light-emitting side of the display panel.
  • the first adhesive layer 22 is formed on the side away from the light-emitting side of the display panel 21 .
  • the first adhesive layer 22 is formed on the side away from the light-emitting side of the display panel 21 .
  • the orthographic projection of the first adhesive layer 22 on the display panel 21 is located in the display area A2; the first adhesive layer 22 includes a first adhesive portion 221 and a second adhesive portion 222, and the first adhesive portion 221 is arranged on the A side of the second bonding portion 222 away from the bending region C2 , and the elastic modulus of the second bonding portion 222 is greater than the elastic modulus of the first bonding portion 221 .
  • the method further includes: forming a polarizer on the light-emitting side of the display panel; and bonding the polarizer and the cover plate through a second adhesive layer.
  • the polarizer 24 is attached to the light-emitting side of the display panel 21 , and then the polarizer 24 and the cover plate 26 are bonded together through the second adhesive layer 25 .
  • the second adhesive layer 25 may be formed on the polarizer 24 first, and then the cover plate 26 and the polarizer 24 formed with the second adhesive layer 25 may be bonded together; or the cover plate 26 may be formed first The second adhesive layer 25, and then the cover plate 26 formed with the second adhesive layer 25 and the polarizer 24 are bonded together.
  • the polarizer 24, the second adhesive layer 25 and the cover plate 26 may be formed in sequence, and then the first adhesive layer 22 may be formed.
  • the fabrication sequence of the embodiments of the present application Not limited to the above order.
  • Step 503 forming a support layer on the side of the first adhesive layer away from the display panel.
  • the support layer 23 is formed on the side of the first adhesive layer 22 away from the display panel 21, and the support layer 23 is on the display panel 21.
  • the orthographic projection on the panel 21 is located in the display area A2.
  • the display panel 21 and the driver chip are bound together in the binding area B2 of the display panel 21 , and then, by bending the bending area C2 folded, so that the driving chip is fixed on the opposite side of the light-emitting side of the display panel 21 .
  • the spacer portion 27 can be formed on the side of the second back film 213 away from the panel body 211 , and then the display panel 21 is bound to the driver chip and bent
  • the spacer portion 27 is located between the second back film 213 and the support layer 23; and the protective layer 28 can be bent at the bending area C2 of the display panel 21. Before folding, it is formed at the bending area C2 of the display panel 21 .
  • the elastic modulus of the second bonding portion close to the bending area is set to be greater than that of the first bonding portion far away from the bending area.
  • any reference signs placed between parentheses shall not be construed as limiting the claim.
  • the word “comprising” does not exclude the presence of elements or steps not listed in a claim.
  • the word “a” or “an” preceding an element does not exclude the presence of a plurality of such elements.
  • the present disclosure can be implemented by means of hardware comprising several different elements, as well as by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware.
  • the use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names.

Landscapes

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

Abstract

可折叠显示装置及其制作方法，涉及显示技术领域。本申请通过在可折叠显示装置中设置显示面板、第一粘接层和支撑层，第一粘接层包括第一粘接部和第二粘接部，第一粘接部设置在第二粘接部远离弯折区的一侧，且第二粘接部的弹性模量大于第一粘接部的弹性模量。将靠近弯折区的第二粘接部的弹性模量设置成大于远离弯折区的第一粘接部的弹性模量，当可折叠显示装置处于折叠状态下时，支撑层会更多地朝向远离显示面板的弯折区的方向发生错层。

Description

可折叠显示装置及其制作方法
本申请要求在2021年02月23日提交中国专利局、申请号为202110202142.6、申请名称为“一种可折叠显示装置及其制作方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，特别是涉及一种可折叠显示装置及其制作方法。
背景技术
随着柔性显示技术的不断发展，可折叠显示装置也得到了广泛的关注，可折叠显示装置由于其可以增大显示面积、折叠收纳和运输也较为方便等优势，成为当前热门的研究方向。
概述
本申请一些实施例提供了如下技术方案：
第一方面，提供了一种可折叠显示装置，包括：
显示面板，所述显示面板包括显示区、绑定区以及位于所述显示区与所述绑定区之间的弯折区；
第一粘接层，设置在远离所述显示面板出光侧的一侧；以及
支撑层，设置在所述第一粘接层远离所述显示面板的一侧；
其中，所述支撑层和所述第一粘接层在所述显示面板上的正投影位于所述显示区；
所述第一粘接层包括第一粘接部和第二粘接部，所述第一粘接部设置在所述第二粘接部远离所述弯折区的一侧，且所述第二粘接部的弹性模量大于所述第一粘接部的弹性模量。
可选的，所述第二粘接部的弹性模量大于或等于200KPa，所述第一粘接部的弹性模量小于或等于100Kpa。
可选的，所述第一粘接层的材料为光学透明胶，且所述第一粘接部和所 述第二粘接部的材料中掺杂有不同的添加剂。
可选的，所述可折叠显示装置具有折叠区，所述折叠区位于所述第一粘接部所在的区域内。
可选的，在所述折叠区，所述支撑层具有多个镂空结构。
可选的，所述可折叠显示装置还包括：依次层叠设置在所述显示面板出光侧的偏光片、第二粘接层和盖板，所述偏光片、所述第二粘接层和所述盖板依次远离所述显示面板设置。
可选的，所述绑定区位于所述显示面板出光侧的相对侧；
其中，所述显示面板包括面板本体、第一背膜和第二背膜；所述面板本体分布在所述显示区、所述绑定区和所述弯折区；所述第一背膜位于所述显示区，且位于所述面板本体与所述第一粘接层之间；所述第二背膜位于所述绑定区，且位于所述面板本体朝向所述支撑层的一侧。
可选的，所述可折叠显示装置还包括隔垫部和保护层；
所述隔垫部位于所述绑定区，且位于所述第二背膜与所述支撑层之间；
所述保护层位于所述弯折区，且位于所述显示面板远离所述第一粘接层的一侧。
第二方面，提供了一种可折叠显示装置的制作方法，包括：
提供一显示面板；所述显示面板包括显示区、绑定区以及位于所述显示区与所述绑定区之间的弯折区；
在远离所述显示面板出光侧的一侧形成第一粘接层；
在所述第一粘接层远离所述显示面板的一侧形成支撑层；
其中，所述支撑层和所述第一粘接层在所述显示面板上的正投影位于所述显示区；所述第一粘接层包括第一粘接部和第二粘接部，所述第一粘接部设置在所述第二粘接部远离所述弯折区的一侧，且所述第二粘接部的弹性模量大于所述第一粘接部的弹性模量。
可选的，在所述提供一显示面板的步骤之后，还包括：
在所述显示面板的出光侧形成偏光片；
将所述偏光片与盖板通过第二粘接层粘接。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
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，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了相关技术中的一种可折叠显示装置的结构示意图；
图2示出了本申请实施例的一种可折叠显示装置在展开状态下的结构示意图；
图3示出了本申请实施例的一种可折叠显示装置在折叠状态下的结构示意图；
图4示出了本申请实施例中的第一粘接层的平面结构图；
图5示出了本申请实施例的一种折叠显示装置的制作方法的流程图。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本申请作进一步详细的说明。
在相关技术中，如图1所示，可折叠显示装置包括支撑层11、第一粘接层12、显示面板13、偏光片14、第二粘接层15、盖板16、隔垫部17和保护层18，其中，显示面板13包括面板本体132、第一背膜131和第二背膜133，并且，显示面板13中的第一背膜131与支撑层11通过第一粘接层12粘接，第一粘接层12的各个区域处的弹性模量是一致的。
因此，在将可折叠显示装置折叠时，可折叠显示装置中的各个膜层之间会出现错层的现象，则支撑层11也会相对于显示面板13向外侧错层，并且，由于第一粘接层12的各个区域处的弹性模量一致，则支撑层11相对于显示面板13向外侧错层后，会使得支撑层11两侧边缘的错层量大致相等，即支撑层11朝向显示面板13的弯折区C1方向上的错层量与支撑层11远离显示面板13的弯折区C1方向上的错层量基本相等，此时，支撑层11朝向显示 面板13的弯折区C1方向上的错层量较大，则导致显示面板13的弯折区C1容易被支撑层11顶伤。
为了防止支撑层11因边缘错层而顶伤显示面板13的弯折区C1，在相关技术中，会将支撑层11设计得更远离显示面板13的弯折区C1，即支撑层11的边缘与显示面板13的弯折区C1之间的距离加大，但是，这种方式虽然避免弯折区C1被顶伤的风险，但是，支撑层11的边缘与显示面板13的弯折区C1之间的距离过大，会导致支撑层11对弯折区C1的支撑不足，从而影响弯折区C1的弯折形态，进而引发显示异常等问题。
因此，本申请实施例针对分别与显示面板和支撑层粘接的第一粘接层，将靠近弯折区的第二粘接部的弹性模量设置成大于远离弯折区的第一粘接部的弹性模量，当可折叠显示装置处于折叠状态下时，支撑层会更多地朝向远离显示面板的弯折区的方向发生错层，使得支撑层朝向显示面板的弯折区方向上的错层量较小，从而避免显示面板的弯折区被支撑层顶伤的风险；并且，也可以保证支撑层对显示面板的弯折区有足够的支撑力，进而保证弯折区的弯折形态，避免显示异常的发生。
参照图2，示出了本申请实施例的一种可折叠显示装置在展开状态下的结构示意图，图3示出了本申请实施例的一种可折叠显示装置在折叠状态下的结构示意图。
本申请实施例提供了一种可折叠显示装置，包括：显示面板21，显示面板21包括显示区A2、绑定区B2以及位于显示区A2与绑定区B2之间的弯折区C2(即Pad Bending区)；可折叠显示装置还包括：设置在远离显示面板21出光侧的第一粘接层22，以及设置在第一粘接层22远离显示面板21一侧的支撑层23；其中，支撑层23和第一粘接层22在显示面板21上的正投影位于显示区A2；第一粘接层22包括第一粘接部221和第二粘接部222，第一粘接部221设置在第二粘接部222远离弯折区C2的一侧，且第二粘接部222的弹性模量大于第一粘接部221的弹性模量。
在实际产品中，显示面板21按照各个区域的功能，将其划分为显示区A2、绑定区B2和弯折区C2，弯折区C2位于显示区A2与绑定区B2之间，显示区A2指的是显示面板21的画面显示区域，绑定区B2指的是显示面板 21与驱动芯片之间进行绑定的区域，由于在将显示面板21与驱动芯片绑定时，需要将驱动芯片绑定到显示面板21出光侧的相对侧，因此，需要将显示面板21进行弯折，弯折的区域就是弯折区C2，显示面板21的弯折区C2的表面为弧面。
在显示面板21出光侧的相对侧设置有第一粘接层22，在第一粘接层22远离显示面板21一侧设置有支撑层23，第一粘接层22用于粘接支撑层23与显示面板21，支撑层23用于支撑显示面板21，并保证弯折区C2的弯折形态；并且，在显示面板21与驱动芯片绑定前，即显示面板21的绑定区B2未通过弯折区C2弯折至远离显示面板21出光侧的一侧时，支撑层23和第一粘接层22在显示面板21上的正投影位于显示区A2，即仅在可折叠显示装置的显示区A2设置支撑层23和第一粘接层22，在可折叠显示装置的绑定区B2和弯折区C2未设置支撑层23和第一粘接层22。
此外，将第一粘接层22中远离弯折区C2的部分称为第一粘接部221，而将第一粘接层22中靠近弯折区C2的部分称为第二粘接部222，并且，将第二粘接部222的弹性模量设置成大于第一粘接部221的弹性模量。
因此，当可折叠显示装置处于折叠状态下时，由于第二粘接部222的弹性模量大于第一粘接部221的弹性模量，支撑层23会更多地朝向远离显示面板21的弯折区C2的方向发生错层，即支撑层23朝向显示面板21的弯折区C2方向上的错层量小于支撑层23远离显示面板21的弯折区C2方向上的错层量，使得支撑层23朝向显示面板21的弯折区C2方向上的错层量较小，从而避免显示面板21的弯折区C2被支撑层顶伤的风险。
具体的，第二粘接部222的弹性模量大于或等于200KPa，第一粘接部221的弹性模量小于或等于100Kpa。
例如，可将第二粘接部222的弹性模量设置成240Kpa、300Kpa等，而将第一粘接部221的弹性模量设置成60Kpa、80Kpa等，使得第二粘接部222的弹性模量大于第一粘接部221的弹性模量。
此外，在可折叠显示装置中，显示面板21的绑定区B2未通过弯折区C2弯折至远离显示面板21出光侧的一侧时，在沿着显示区A2指向弯折区C2的方向上，第一粘接部221的长度可以大于第二粘接部222的长度，当 然，第一粘接部221的长度也可以小于第二粘接部222长度，本申请实施例对此不作限制；而在显示区A2指向弯折区C2的方向的垂直方向上，第一粘接部221的宽度等于第二粘接部222的宽度，此时，显示区A2指向弯折区C2的方向的垂直方向与显示面板21的出光面相互平行。
在实际产品中，第一粘接层22的材料为光学透明胶，且第一粘接部221和第二粘接部222的材料中掺杂有不同的添加剂。
也就是说，该光学透明胶实际上为OCA(Optically Clear Adhesive，光学透明粘合剂)胶，第一粘接部221的材料为掺杂有第一添加剂的OCA胶，第二粘接部222的材料为掺杂有第二添加剂的OCA胶，且第一添加剂和第二添加剂不同，使得第一粘接层22两侧的弹性模量不同。
在制作第一粘接层22时，通过在第一粘接部221所在区域处和第二粘接部222所在区域处的OCA胶中掺杂不同的添加剂，使得第二粘接部222的弹性模量大于第一粘接部221的弹性模量，因此，后续在将第一粘接层22贴合在显示面板21的出光侧的相对侧时，只需采用原有的贴合工艺即可，工艺无需做任何变动。
在本申请实施例中，如图2至图4所示，可折叠显示装置具有折叠区D2，折叠区D2位于第一粘接部221所在的区域内。
折叠区D2指的是可折叠显示装置在展开状态与折叠状态之间变化时需要折叠的区域，当可折叠显示装置处于展开状态时，可折叠显示装置中的显示面板21的出光面位于同一平面，当可折叠显示装置处于折叠状态时，折叠区D2两侧的显示面板21的出光面相对设置。
通过将折叠区D2设置在第一粘接部221所在的区域内，由于第一粘接部221的弹性模量小，因此，在将可折叠显示装置折叠时其更容易操作，另外，可进一步使得支撑层23更多地朝着远离弯折区C2的一侧错动。
在本申请实施例中，在折叠区D2，支撑层23具有多个镂空结构。
支撑层23的材料为刚性材料，如SUS(不锈钢)，由于在将可折叠显示装置进行折叠时，支撑层23也需要折叠，而支撑层23的材料其刚性较大，因此，为了保证支撑层23也可以折叠，需要将折叠区D2处的支撑层23设置成多个镂空结构，该镂空结构贯穿支撑层23的厚度方向，该厚度方向指 的是显示面板21的出光面的垂直方向，而在支撑层23的非折叠区，支撑层23不具有镂空结构。
并且，该镂空结构在显示面板21的显示区A2上的正投影形状为封闭图形，如圆形、矩形、六边形等；折叠区D2处的镂空结构的具体数量和分布方式，本申请实施例对此不作限制。
如图2和图3所示，可折叠显示装置还包括：依次层叠设置在显示面板21出光侧的偏光片24、第二粘接层25和盖板26，偏光片24、第二粘接层25和盖板26依次远离显示面板21设置。
也就是说，偏光片24设置在显示面板21的出光面上，第二粘接层25设置在偏光片24远离显示面板21的一侧，盖板26设置在第二粘接层25远离偏光片24的一侧。
并且，偏光片24和第二粘接层25位于显示面板21的显示区A2，第二粘接层25的材料为OCA胶，且第二粘接层25中各个区域处的弹性模量一致，第二粘接层25的弹性模量可以与第一粘接部221的弹性模量相等；盖板26除了位于显示区A2之外，还会延伸至弯折区C2。
在本申请实施例中，绑定区B2位于显示面板21出光侧的相对侧；其中，显示面板21包括面板本体211、第一背膜212和第二背膜213；面板本体211分布在显示区A2、绑定区B2和弯折区C2；第一背膜212位于显示区A2，且位于面板本体211与第一粘接层22之间；第二背膜213位于绑定区B2，且位于面板本体211朝向支撑层23的一侧。
在实际制作工艺中，在将显示面板21、偏光片24、第二粘接层25、盖板26、第一粘接层22和支撑层23组装之后，需要在显示面板21的绑定区B2处，将显示面板21与驱动芯片绑定在一起，然后，通过将弯折区C2弯折，使得驱动芯片固定在显示面板21出光侧的相对侧，此时，绑定区B2弯折至远离显示面板21出光侧的一侧。
其中，显示面板21包括面板本体211，该面板本体211为OLED(Organic Light Emitting Diode，有机发光二极管)面板，面板本体211包括衬底基板、设置在衬底基板上的像素驱动电路、与像素驱动电路连接的发光器件，以及覆盖发光器件的封装层，该衬底基板为柔性基板；面板本体211分布在显示 区A2、绑定区B2和弯折区C2。
此外，显示面板21还包括设置在衬底基板远离发光器件一侧的第一背膜212和第二背膜213，第一背膜212位于显示区A2，且位于面板本体211与第一粘接层22之间，第二背膜213位于绑定区B2，在将绑定区B2通过弯折区C2弯折至远离显示面板21出光侧的一侧后，第二背膜213位于面板本体211朝向支撑层23的一侧，而在弯折区C2未设置有背膜，即第一背膜212和第二背膜213之间存在间隔区域。
通过在显示面板21中设置第一背膜212和第二背膜213，以使第一背膜212和第二背膜213可以保护面板本体211。
在本申请实施例中，可折叠显示装置还包括隔垫部27和保护层28；隔垫部27位于绑定区B2，且位于第二背膜213与支撑层23之间；保护层28位于弯折区C2，且位于显示面板21远离第一粘接层22的一侧。
在显示面板21的绑定区B2处设置有隔垫部27，隔垫部27位于第二背膜213远离面板本体211的一侧，因此，将绑定区B2通过弯折区C2弯折至远离显示面板21出光侧的一侧后，使得隔垫部27位于第二背膜213与支撑层23之间。
在显示面板21的弯折区C2处设置有保护层28，将绑定区B2通过弯折区C2弯折至远离显示面板21出光侧的一侧后，保护层28位于显示面板21远离第一粘接层22的一侧，此外，保护层28还会部分延伸至显示区A2和绑定区B2。
具体的，保护层28实际上为MCL(Metal Cover Layer，金属覆盖层)胶层，通过在弯折区C2处设置保护层28，使得可折叠显示装置的应力中性层的位置位于显示面板21处，该应力中性层是显示面板21的弯折区C2弯折后受到应力最小的部位，因此，通过设置保护层28可有效降低显示面板21发生破损的概率，并且，保护层28也可以保护弯折区C2处的金属走线。
需要说明的是，本申请实施例中的可折叠显示装置为外折型显示装置，也就是说，可折叠显示装置在处于折叠状态时，显示面板21的出光面均暴露在外侧。
在实际应用中，可折叠显示装置以为：电子纸、手机、平板电脑、显示 器、笔记本电脑、导航仪等任何具有显示和折叠功能的产品或部件。
在本申请实施例中，针对分别与显示面板和支撑层粘接的第一粘接层，将靠近弯折区的第二粘接部的弹性模量设置成大于远离弯折区的第一粘接部的弹性模量，当可折叠显示装置处于折叠状态下时，支撑层会更多地朝向远离显示面板的弯折区的方向发生错层，使得支撑层朝向显示面板的弯折区方向上的错层量较小，从而避免显示面板的弯折区被支撑层顶伤的风险。
参照图5，示出了本申请实施例的一种折叠显示装置的制作方法的流程图，具体可以包括如下步骤：
步骤501，提供一显示面板；所述显示面板包括显示区、绑定区以及位于所述显示区与所述绑定区之间的弯折区。
在本申请实施例中，首先，制作显示面板21，该显示面板21包括面板本体211、第一背膜212和第二背膜213。
具体的，先在衬底基板上形成像素驱动电路，再形成与像素驱动电路连接的发光器件，接着形成覆盖发光器件的封装层，以得到面板本体21，面板本体21分布在显示区A2、绑定区B2和弯折区C2，最后，在面板本体21出光侧的相对侧形成第一背膜212和第二背膜213，第一背膜212位于显示区A2，第二背膜位于绑定区B2。
步骤502，在远离所述显示面板出光侧的一侧形成第一粘接层。
在本申请实施例中，在形成显示面板21之后，在远离显示面板21出光侧的一侧形成第一粘接层22，具体的，采用贴附工艺在远离显示面板21出光侧的一侧形成第一粘接层22。
其中，第一粘接层22在显示面板21上的正投影位于显示区A2；第一粘接层22包括第一粘接部221和第二粘接部222，第一粘接部221设置在第二粘接部222远离弯折区C2的一侧，且第二粘接部222的弹性模量大于第一粘接部221的弹性模量。
此外，在步骤501之后，还包括：在所述显示面板的出光侧形成偏光片；将所述偏光片与盖板通过第二粘接层粘接。
也就是说，在形成显示面板21之后，在显示面板21的出光侧贴附偏光片24，然后将偏光片24与盖板26通过第二粘接层25粘接在一起。具体的， 可以先在偏光片24上形成第二粘接层25，再将盖板26与形成有第二粘接层25的偏光片24粘接在一起；也可以先在盖板26上形成第二粘接层25，然后将形成有第二粘接层25的盖板26与偏光片24粘接在一起。
需要说明的是，在制作得到显示面板21之后，可以先依次形成偏光片24、第二粘接层25和盖板26，再形成第一粘接层22，当然，本申请实施例的制作顺序不局限于上述顺序。
步骤503，在所述第一粘接层远离所述显示面板的一侧形成支撑层。
在本申请实施例中，在远离显示面板21出光侧的一侧形成第一粘接层22之后，在第一粘接层22远离显示面板21一侧形成支撑层23，且支撑层23在显示面板21上的正投影位于显示区A2。
在第一粘接层22远离显示面板21一侧形成支撑层23之后，在显示面板21的绑定区B2，将显示面板21与驱动芯片绑定在一起，然后，通过将弯折区C2弯折，使得驱动芯片固定在显示面板21出光侧的相对侧。
需要说明的是，在形成第二背膜213之后，可在第二背膜213远离面板本体211的一侧形成隔垫部27，后续在将显示面板21与驱动芯片绑定，并通过弯折区C2将驱动芯片固定在显示面板21出光侧的相对侧时，使得隔垫部27位于第二背膜213与支撑层23之间；而保护层28可以在显示面板21的弯折区C2弯折之前，形成在显示面板21的弯折区C2处。
在本申请实施例中，针对分别与显示面板和支撑层粘接的第一粘接层，将靠近弯折区的第二粘接部的弹性模量设置成大于远离弯折区的第一粘接部的弹性模量，当可折叠显示装置处于折叠状态下时，支撑层会更多地朝向远离显示面板的弯折区的方向发生错层，使得支撑层朝向显示面板的弯折区方向上的错层量较小，从而避免显示面板的弯折区被支撑层顶伤的风险。
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着，结合实施例描述的特定特征、结构或者特性包括在本公开的至少一个实施例中。此外，请注意，这里“在一个实施例中”的词语例子不一定全指同一个实施例。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本公开的实施例可以在没有这些具体细节的情况下被实践。在一些实例中，并 未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本公开可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。
最后应说明的是：以上实施例仅用以说明本公开的技术方案，而非对其限制；尽管参照前述实施例对本公开进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本公开各实施例技术方案的精神和范围。

Claims (10)

  1. 一种可折叠显示装置，其中，包括：
    显示面板，所述显示面板包括显示区、绑定区以及位于所述显示区与所述绑定区之间的弯折区；
    第一粘接层，设置在远离所述显示面板出光侧的一侧；以及
    支撑层，设置在所述第一粘接层远离所述显示面板的一侧；
    其中，所述支撑层和所述第一粘接层在所述显示面板上的正投影位于所述显示区；
    所述第一粘接层包括第一粘接部和第二粘接部，所述第一粘接部设置在所述第二粘接部远离所述弯折区的一侧，且所述第二粘接部的弹性模量大于所述第一粘接部的弹性模量。
  2. 根据权利要求1所述的可折叠显示装置，其中，所述第二粘接部的弹性模量大于或等于200KPa，所述第一粘接部的弹性模量小于或等于100Kpa。
  3. 根据权利要求1所述的可折叠显示装置，其中，所述第一粘接层的材料为光学透明胶，且所述第一粘接部和所述第二粘接部的材料中掺杂有不同的添加剂。
  4. 根据权利要求1所述的可折叠显示装置，其中，所述可折叠显示装置具有折叠区，所述折叠区位于所述第一粘接部所在的区域内。
  5. 根据权利要求4所述的可折叠显示装置，其中，在所述折叠区，所述支撑层具有多个镂空结构。
  6. 根据权利要求1所述的可折叠显示装置，其中，所述可折叠显示装置还包括：依次层叠设置在所述显示面板出光侧的偏光片、第二粘接层和盖板，所述偏光片、所述第二粘接层和所述盖板依次远离所述显示面板设置。
  7. 根据权利要求1至6中任一项所述的可折叠显示装置，其中，所述绑定区位于所述显示面板出光侧的相对侧；
    其中，所述显示面板包括面板本体、第一背膜和第二背膜；所述面板本体分布在所述显示区、所述绑定区和所述弯折区；所述第一背膜位于所述显 示区，且位于所述面板本体与所述第一粘接层之间；所述第二背膜位于所述绑定区，且位于所述面板本体朝向所述支撑层的一侧。
  8. 根据权利要求7所述的可折叠显示装置，其中，所述可折叠显示装置还包括隔垫部和保护层；
    所述隔垫部位于所述绑定区，且位于所述第二背膜与所述支撑层之间；
    所述保护层位于所述弯折区，且位于所述显示面板远离所述第一粘接层的一侧。
  9. 一种可折叠显示装置的制作方法，其中，包括：
    提供一显示面板；所述显示面板包括显示区、绑定区以及位于所述显示区与所述绑定区之间的弯折区；
    在远离所述显示面板出光侧的一侧形成第一粘接层；
    在所述第一粘接层远离所述显示面板的一侧形成支撑层；
    其中，所述支撑层和所述第一粘接层在所述显示面板上的正投影位于所述显示区；所述第一粘接层包括第一粘接部和第二粘接部，所述第一粘接部设置在所述第二粘接部远离所述弯折区的一侧，且所述第二粘接部的弹性模量大于所述第一粘接部的弹性模量。
  10. 根据权利要求9所述的方法，其中，在所述提供一显示面板的步骤之后，还包括：
    在所述显示面板的出光侧形成偏光片；
    将所述偏光片与盖板通过第二粘接层粘接。
PCT/CN2021/128100 2021-02-23 2021-11-02 可折叠显示装置及其制作方法 WO2022179162A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/802,755 US20240206281A1 (en) 2021-02-23 2021-11-02 Foldable display device and fabricating method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110202142.6A CN112991945A (zh) 2021-02-23 2021-02-23 一种可折叠显示装置及其制作方法
CN202110202142.6 2021-02-23

Publications (1)

Publication Number Publication Date
WO2022179162A1 true WO2022179162A1 (zh) 2022-09-01

Family

ID=76349713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/128100 WO2022179162A1 (zh) 2021-02-23 2021-11-02 可折叠显示装置及其制作方法

Country Status (3)

Country Link
US (1) US20240206281A1 (zh)
CN (1) CN112991945A (zh)
WO (1) WO2022179162A1 (zh)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112991945A (zh) * 2021-02-23 2021-06-18 京东方科技集团股份有限公司 一种可折叠显示装置及其制作方法
CN113539093A (zh) * 2021-07-14 2021-10-22 京东方科技集团股份有限公司 显示面板及显示装置
CN114023195B (zh) * 2021-11-12 2023-07-04 昆山国显光电有限公司 显示模组、显示模组的控制方法
CN114203050B (zh) * 2021-12-28 2023-11-28 武汉华星光电半导体显示技术有限公司 显示模组及显示终端
CN114300638B (zh) * 2021-12-29 2023-12-01 武汉华星光电半导体显示技术有限公司 一种背板及显示面板
CN114863802B (zh) * 2022-03-24 2024-03-15 京东方科技集团股份有限公司 折叠显示模组和显示装置
CN114864843A (zh) * 2022-04-12 2022-08-05 武汉华星光电半导体显示技术有限公司 显示面板
WO2023230803A1 (zh) * 2022-05-31 2023-12-07 京东方科技集团股份有限公司 显示面板、显示模组和显示装置
CN115083287B (zh) * 2022-07-08 2023-08-22 武汉华星光电半导体显示技术有限公司 显示模组及显示装置
CN115482750B (zh) * 2022-10-18 2025-03-14 京东方科技集团股份有限公司 显示模组、电子装置和制备方法
CN115731793A (zh) 2022-11-14 2023-03-03 武汉华星光电半导体显示技术有限公司 显示模组及显示装置
CN116682326A (zh) * 2023-06-12 2023-09-01 京东方科技集团股份有限公司 显示模组及其制备方法、显示装置
CN117119826A (zh) * 2023-09-28 2023-11-24 京东方科技集团股份有限公司 柔性显示装置、穿戴设备及柔性显示装置制造方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109461382A (zh) * 2018-12-03 2019-03-12 武汉华星光电半导体显示技术有限公司 可弯折面板及其制作方法
CN110890025A (zh) * 2019-11-27 2020-03-17 京东方科技集团股份有限公司 一种触控显示装置
CN210627726U (zh) * 2019-12-24 2020-05-26 上海和辉光电有限公司 折叠显示装置
CN111292621A (zh) * 2020-02-24 2020-06-16 京东方科技集团股份有限公司 显示装置、用于显示装置的支撑膜及电子设备
CN111816082A (zh) * 2020-08-13 2020-10-23 京东方科技集团股份有限公司 一种显示组件及其组装方法、显示装置
CN111986578A (zh) * 2020-09-21 2020-11-24 京东方科技集团股份有限公司 显示装置
CN212061687U (zh) * 2020-01-20 2020-12-01 华为技术有限公司 电子设备
CN112991945A (zh) * 2021-02-23 2021-06-18 京东方科技集团股份有限公司 一种可折叠显示装置及其制作方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10777776B2 (en) * 2017-11-10 2020-09-15 Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Flexible display apparatus and method for fabricating flexible display apparatus
CN109032412B (zh) * 2018-08-01 2020-06-30 武汉华星光电半导体显示技术有限公司 一种显示装置
KR102563783B1 (ko) * 2018-11-13 2023-08-04 엘지디스플레이 주식회사 표시장치
KR102737076B1 (ko) * 2018-12-07 2024-12-03 엘지디스플레이 주식회사 플렉서블 표시장치
KR20210059121A (ko) * 2019-11-14 2021-05-25 삼성디스플레이 주식회사 표시장치 및 이를 갖는 전자장치
CN113140155B (zh) * 2020-01-20 2022-10-11 华为技术有限公司 电子设备
CN113744630B (zh) * 2020-05-28 2023-06-23 云谷（固安）科技有限公司 显示模组、显示模组的制造方法及显示装置
CN113936550B (zh) * 2020-06-29 2023-02-14 华为技术有限公司 内折屏电子设备
WO2022021381A1 (zh) * 2020-07-31 2022-02-03 京东方科技集团股份有限公司 显示模组及显示装置
CN114639305A (zh) * 2020-12-15 2022-06-17 群创光电股份有限公司 显示装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109461382A (zh) * 2018-12-03 2019-03-12 武汉华星光电半导体显示技术有限公司 可弯折面板及其制作方法
CN110890025A (zh) * 2019-11-27 2020-03-17 京东方科技集团股份有限公司 一种触控显示装置
CN210627726U (zh) * 2019-12-24 2020-05-26 上海和辉光电有限公司 折叠显示装置
CN212061687U (zh) * 2020-01-20 2020-12-01 华为技术有限公司 电子设备
CN111292621A (zh) * 2020-02-24 2020-06-16 京东方科技集团股份有限公司 显示装置、用于显示装置的支撑膜及电子设备
CN111816082A (zh) * 2020-08-13 2020-10-23 京东方科技集团股份有限公司 一种显示组件及其组装方法、显示装置
CN111986578A (zh) * 2020-09-21 2020-11-24 京东方科技集团股份有限公司 显示装置
CN112991945A (zh) * 2021-02-23 2021-06-18 京东方科技集团股份有限公司 一种可折叠显示装置及其制作方法

Also Published As

Publication number Publication date
US20240206281A1 (en) 2024-06-20
CN112991945A (zh) 2021-06-18

Similar Documents

Publication Publication Date Title
WO2022179162A1 (zh) 可折叠显示装置及其制作方法
US12111990B2 (en) Display device and input-sensing member
JP7048488B2 (ja) 可撓性表示パネル、及びその製造方法、表示装置
US20200335729A1 (en) Display device
CN110444678A (zh) 显示装置和用于显示装置的支撑膜结构
US11175764B2 (en) Touch display device
KR102582854B1 (ko) 표시 장치 및 표시 장치의 제조 방법
CN106530973A (zh) 一种曲面显示装置
WO2022062765A1 (zh) 显示模组堆叠结构及显示装置
CN110634399B (zh) 一种柔性盖板、柔性显示装置及柔性盖板的制作方法
CN104317080A (zh) 一种显示装置及其制作方法
CN108550586A (zh) 显示模组及其制作方法、显示装置
US11263930B2 (en) Flexible display device and hetero-shaped double-sided adhesive tape
CN111725280A (zh) 一种柔性oled显示装置及其模组迭层结构的制备方法
US11770907B2 (en) Support film layer and flexible display panel
US20240215376A1 (en) Display module and display device
US10338708B2 (en) Flexible touch screen, method for manufacturing the same and touch device
CN111739413A (zh) 终端设备、柔性屏及柔性显示基板
KR102819834B1 (ko) 표시장치
CN109637382A (zh) 显示面板及显示装置
CN115171534B (zh) 显示模组及显示装置
CN109802049B (zh) 显示面板及其制备方法、显示装置
US20200041706A1 (en) Polarizer and display device
US11050030B2 (en) OLED display and OLED display device
WO2022021381A1 (zh) 显示模组及显示装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 17802755

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21927586

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205N DATED 17/10/2023)

122 Ep: pct application non-entry in european phase

Ref document number: 21927586

Country of ref document: EP

Kind code of ref document: A1