WO2022188441A1 - 显示装置 - Google Patents

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Publication number
WO2022188441A1
WO2022188441A1 PCT/CN2021/128659 CN2021128659W WO2022188441A1 WO 2022188441 A1 WO2022188441 A1 WO 2022188441A1 CN 2021128659 W CN2021128659 W CN 2021128659W WO 2022188441 A1 WO2022188441 A1 WO 2022188441A1
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WO
WIPO (PCT)
Prior art keywords
display panel
groove
area
grooves
display
Prior art date
Application number
PCT/CN2021/128659
Other languages
English (en)
French (fr)
Inventor
韩子昂
王浩然
谢春燕
张嵩
王晶
Original Assignee
京东方科技集团股份有限公司
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 filed Critical 京东方科技集团股份有限公司
Priority to US17/913,669 priority Critical patent/US20230115315A1/en
Publication of WO2022188441A1 publication Critical patent/WO2022188441A1/zh

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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
    • H10K59/40—OLEDs integrated with touch screens
    • 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
    • H10K50/844—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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • 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
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes
    • 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

Definitions

  • the present application relates to the field of display technology, and in particular, to a display device.
  • a display device comprising: a display panel;
  • a protective layer disposed on the side away from the light-emitting surface of the display panel
  • a support layer disposed on the side of the protective layer away from the display panel
  • the display panel includes a flat area and a curved area located on at least one side of the flat area, and the orthographic projection of the support layer on the display panel is located at least in the curved area;
  • the protective layer has at least one first groove
  • the support layer has a second groove passing through
  • the first groove is formed on the display panel.
  • the display device further includes a first adhesive layer disposed in the first groove and the second groove.
  • the support layer has the second grooves one-to-one corresponding to the first grooves, and each of the first grooves and the corresponding second grooves communicate with each other.
  • the protective layer has at least two of the first grooves
  • the support layer has at least one of the second grooves
  • the orthographic projection of each of the second grooves on the display panel At least two orthographic projections of the first grooves on the display panel are covered.
  • the second groove in a direction perpendicular to the light-emitting surface of the display panel, includes at least two sub-grooves connected in sequence, and for any two adjacent sub-grooves, close to all the sub-grooves.
  • the orthographic projection of the sub-groove of the display panel on the display panel is located away from the orthographic projection of the display panel of the sub-groove of the display panel.
  • the orthographic projection of the sub-groove closest to the display panel on the display panel covers the orthographic projection of the first groove on the display panel.
  • the orthographic projection of the sub-groove closest to the display panel on the display panel is located within the orthographic projection of the first groove on the display panel, and the second groove is in the orthographic projection of the sub-groove on the display panel.
  • the orthographic projections of the other sub-grooves on the display panel except the sub-groove closest to the display panel all cover the orthographic projection of the first groove on the display panel.
  • the orthographic projection of the support layer on the display panel is also located in the plane area.
  • the display panel includes a display area, and the display area includes at least the plane area.
  • the display area completely coincides with the plane area; or,
  • the display area includes the flat area and part of the curved area; or,
  • the display area includes the flat area and all of the curved area.
  • the plane area includes two oppositely arranged first sides and two oppositely arranged second sides, and the included angle between the first side and the second side is not 0 ;
  • the curved area is located on the side where any one of the first sides or any one of the second sides is located; or,
  • the curved area is located on the side where the two first side edges or the two second side edges are located; or,
  • the curved area is located on the side where the two first side edges and the two second side edges are located.
  • the depth of the first groove is less than or equal to the thickness of the protective layer, and the thickness of the protective layer is 25 ⁇ m to 200 ⁇ m.
  • the protective layer has a plurality of first grooves, and the plurality of first grooves are distributed along the row direction and/or the column direction.
  • the orthographic shape of the first groove on the display panel is a rectangle, the length of the first groove in the row direction is 5 mm to 30 mm, and the length of the first groove in the column direction is 5 mm to 30 mm.
  • the width is 1mm to 3mm;
  • the orthographic projection shape of the first groove on the display panel is a circle, and the diameter of the first groove is 1 mm to 3 mm.
  • the display device further includes: a second adhesive layer, a polarizer, a third adhesive layer and a cover plate that are sequentially stacked on the light-emitting surface of the display panel, the second adhesive layer, the The polarizer, the third adhesive layer and the cover plate are disposed away from the display panel in sequence.
  • the display panel includes the display area, a binding area, and a bending area located between the display area and the binding area;
  • the display device further includes a binding structure disposed in the binding area, and a flexible circuit board bound with the binding structure; the binding structure and the flexible circuit board are located on the light-emitting side of the display panel On the opposite side of the display panel, and the display panel located in the binding area is bonded to the support layer.
  • a method for manufacturing a display device including:
  • a display panel is provided; the display panel includes a flat area and a curved area on at least one side of the flat area;
  • a protective layer is formed on the side away from the light-emitting surface of the display panel; in a direction perpendicular to the light-emitting surface of the display panel, the protective layer has at least one first groove;
  • a support layer is formed on the side of the protective layer away from the display panel; the orthographic projection of the support layer on the display panel is at least in the curved area, and in the direction perpendicular to the light-emitting surface of the display panel, the support layer has a second groove therethrough;
  • the orthographic projection of the first groove on the display panel and the orthographic projection of the second groove on the display panel have an overlapping area, and the second groove is on the display panel
  • the orthographic projection of is located in the surface area.
  • FIG. 1 shows a schematic cross-sectional view of a display device in the related art
  • FIG. 2 shows a schematic cross-sectional view of a display device according to an embodiment of the present application
  • FIG. 3 shows a schematic cross-sectional view of another display device according to an embodiment of the present application.
  • FIG. 4 shows a schematic cross-sectional view of still another display device according to an embodiment of the present application.
  • FIG. 5 shows a schematic plan view of the first protective layer in the embodiment of the present application
  • FIG. 6 shows a schematic plan view of the second protective layer in the embodiment of the present application.
  • FIG. 7 shows a schematic plan view of the third protective layer in the embodiment of the present application.
  • FIG. 8 shows a schematic plan view of the fourth protective layer in the embodiment of the present application.
  • FIG. 9 shows a schematic cross-sectional view of a display panel in an embodiment of the present application.
  • FIG. 10 shows a schematic plan view of a display device according to an embodiment of the present application.
  • FIG. 11 shows a flowchart of a method for manufacturing a display device according to an embodiment of the present application
  • FIG. 12 shows a first cross-sectional view after forming a protective layer and a support layer on the backlight side of the display panel according to an embodiment of the present application
  • FIG. 13 shows a second cross-sectional view after a protective layer and a support layer are formed on the backlight side of the display panel according to the embodiment of the present application.
  • a display device with a curved edge structure for a display device with a curved edge structure, it includes a display panel 11 with a protective layer, a first adhesive layer 12 and a support layer 13, and the display panel 11 with a protective layer It includes a display panel, a protective layer and a second adhesive layer arranged between the display panel and the protective layer.
  • the edge of the support layer 13 needs to be made into a curved surface structure with a circular arc shape, and then the display panel 11 with the protective layer is attached to the support layer 13 through the first adhesive layer 12, so that the tape
  • the display panel 11 with the protective layer is also bent at the curved area of the support layer 13, so that the edge of the display device has a curved structure.
  • the display panel 11 with the protective layer has a strong restoring force at the curved surface area A1, so that the display panel 11 with the protective layer can easily recover from the curved state to the straight state. Therefore, The first adhesive layer 12 cannot firmly bond the display panel 11 with the protective layer and the support layer 13 together, resulting in separation of the display panel 11 with the protective layer and the support layer 13 at the curved area A1.
  • the material composition of the first bonding layer 12 can be improved, the bonding performance of the first bonding layer 12 can be optimized, and the tape at room temperature can be temporarily suspended.
  • the problem of separation between the display panel 11 with the protective layer and the support layer 13 is to ensure the normal operation of the subsequent process. However, in the reliability test of high temperature and high humidity, the display panel 11 with the protective layer and the support layer 13 will still be separated. .
  • a second groove is provided through the support layer at the curved surface area, and a first groove is provided on the protective layer at the corresponding area, so that the first groove and the second groove are communicated with each other. Therefore, when the first adhesive layer is arranged in the first groove and the second groove, the adhesion between the first adhesive layer and the protective layer and the support layer is enhanced, so that the display panel formed with the protective layer can be
  • the supporting layers of the curved surface structure are stably and firmly attached together to avoid separation of the protective layer and the supporting layer, thereby ensuring the normal progress of the subsequent assembly process of the display device and improving the reliability of the product.
  • FIG. 2 a schematic cross-sectional view of a display device according to an embodiment of the present application is shown
  • FIG. 3 is a schematic cross-sectional view of another display device according to an embodiment of the present application
  • An embodiment of the present application provides a display device, comprising: a display panel 21, a protective layer 22 disposed on a side away from the light-emitting surface of the display panel 21, and a support layer 23 disposed on a side of the protective layer 22 away from the display panel 21;
  • the panel 21 includes a plane area B2 and a curved area A2 located on at least one side of the plane area B2, and the orthographic projection of the support layer 23 on the display panel 21 is at least located in the curved area A2; in the direction perpendicular to the light-emitting surface of the display panel 21, the protective layer 22 has at least one first groove, the support layer 23 has a second groove running through it, the orthographic projection of the first groove on the display panel 21 and the orthographic projection of the second groove on the display panel 21 have an overlapping area, and the The orthographic projection of the two grooves on the display panel 21 is located in the curved surface area A2; the display device further includes a first adhesive layer 24 disposed in the first groove and the second groove.
  • the display panel 21 is an OLED (Organic Light Emitting Diode, organic light-emitting diode) display panel, which includes a flexible substrate, a pixel drive circuit disposed on the flexible substrate, and the pixel drive circuit is disposed at a distance away from the flexible substrate.
  • the light-emitting device layer includes an anode, a cathode, and an organic light-emitting layer disposed between the anode and the cathode.
  • the pixel driving circuit is connected to the anode in the light-emitting device layer, and is used to supply voltage to the anode to drive the organic light-emitting layer to emit light;
  • the encapsulation layer is
  • the thin film encapsulation layer includes an organic encapsulation layer and/or an inorganic encapsulation layer to prevent water and oxygen from entering the interior of the display panel 21 ;
  • the touch functional layer includes touch driving electrodes and touch sensing electrodes to detect the user's touch position.
  • the display panel 21 includes a flat area B2 and a curved area A2 located on at least one side of the flat area B2.
  • a protective layer 22 is disposed on the side away from the light emitting surface of the display panel 21 , and the orthographic projection of the protective layer 22 on the display panel 21 is located in the plane area B2 and the curved area A2 of the display panel 21 .
  • the protective layer 22 is actually the back film of the display device.
  • the protective layer 22 In the direction perpendicular to the light-emitting surface of the display panel 21, the protective layer 22 has at least one first groove, and each first groove can penetrate through the protective layer 22, and also The protective layer 22 may not be penetrated.
  • a support layer 23 is disposed on the side of the protective layer 22 away from the display panel 21 , and the orthographic projection of the support layer 23 on the display panel 21 is located at least at the curved area A2 of the display panel 21 .
  • the support layer 23 also has a second groove running through it, and the orthographic projection of the second groove on the display panel 21 is located at the curved area A2; the number of the second grooves There may be one or more, and the orthographic projection of the first groove on the display panel 21 and the orthographic projection of the second groove on the display panel 21 have an overlapping area, that is, the first groove and the second groove Connected.
  • a first adhesive layer 24 is also provided in the first groove and the second groove, and the material of the first adhesive layer 24 is a curing glue, such as ultraviolet curing glue or heat curing glue, which is used for The support layer 23 and the protective layer 22 at the curved area A2 are bonded together.
  • a curing glue such as ultraviolet curing glue or heat curing glue
  • the support layer 23 has a plane structure and a curved surface structure, and the curved surface structure is located at the edge area of the support layer 23 .
  • each area of the protective layer 22 and the display panel 21 is a plane structure, and after the protective layer 22 fixed on the backlight side of the display panel 21 is bonded together with the support layer 23 through the first adhesive layer 24 , the position of the protective layer 22 in contact with the curved structure of the support layer 23 is also a curved structure, and correspondingly, the display panel 21 at the corresponding position is also a curved structure, so that the display panel 21 has a plane area B2 and is located in the plane area B2 Curved area A2 on at least one side.
  • the extending directions of the first groove and the second groove are perpendicular to the light emitting surface of the display panel 21 having a curved structure. of.
  • the surface of the support layer 23 on the side away from the protective layer 22, the surface of the support layer 23 in contact with the protective layer 22, the surface of the protective layer 22 in contact with the display panel 21, and the surface of the display panel 21 are all curved surfaces, and specifically, the curved surfaces are arc surfaces.
  • a second groove is provided through the support layer 23 at the curved surface area A2, and a first groove is provided on the protective layer 22 at the corresponding area.
  • the first groove and the second groove are mutually Therefore, when the first adhesive layer 24 is arranged in the first groove and the second groove, the adhesion between the first adhesive layer 24 and the protective layer 22 and the support layer 23 is enhanced, so that the protective layer 22 is formed
  • the display panel 21 can be stably and firmly attached to the supporting layer 23 having a curved structure, so as to avoid the separation of the protective layer 22 and the supporting layer 23, thereby ensuring the normal operation of the subsequent process and improving the reliability of the product.
  • the support layer 23 has second grooves corresponding to the first grooves one-to-one, and each first groove is associated with a corresponding first groove.
  • the two grooves communicate with each other.
  • the number of the first grooves is equal to the number of the second grooves, and each first groove is only communicated with its corresponding second groove, that is, the first groove and the second groove are in one-to-one correspondence.
  • the protective layer 22 has at least two first grooves
  • the support layer 23 has at least one second groove
  • each second groove is shown in the The orthographic projection on the panel 21 at least covers the orthographic projection of the two first grooves on the display panel 21 .
  • the number of the first grooves is smaller than the number of the second grooves
  • the number of the second grooves provided on the support layer 23 is at least one
  • the orthographic projection of each second groove on the display panel 21 covers at least one
  • the orthographic projection of the two first grooves on the display panel 21 that is, each second groove communicates with at least two first grooves.
  • the protective layer 22 has 4 first grooves
  • the support layer 23 has 2 second grooves
  • the orthographic projection of each second groove on the display panel 21 covers the two first grooves on the display panel 21 Orthographic projection on the display panel 21; or, the protective layer 22 has four first grooves, the support layer 23 has one second groove, and the orthographic projection of the second groove on the display panel 21 covers all the first grooves Orthographic projection on the display panel 21 .
  • the second groove in the direction perpendicular to the light-emitting surface of the display panel 21 , includes at least two sub-grooves connected in sequence, and for any adjacent two sub-grooves There are sub-grooves, and the orthographic projection of the sub-grooves close to the display panel 21 on the display panel 21 is located in the orthographic projection of the sub-grooves far from the display panel 21 on the display panel 21 .
  • the side walls of the second groove are stepped, and the orthographic projection of the sub-grooves close to the display panel 21 on the display panel 21 is located far from the display panel 21.
  • the sub-grooves of the panel 21 are in the orthographic projection of the display panel 21 , that is, from the direction close to the display panel 21 to the direction away from the display panel 21 , the sizes of the sub-grooves gradually increase.
  • the orthographic projection shape of each sub-groove on the display panel 21 is a closed figure, such as a rectangle or a circle.
  • the orthographic shape of each sub-groove on the display panel 21 is a rectangle, the length of the sub-groove gradually increases from the direction close to the display panel 21 to the direction away from the display panel 21, while the width of the sub-groove remains unchanged; Or, the length of the sub-groove is unchanged, and the width of the sub-groove gradually increases; or, both the length and the width of the sub-groove gradually increase; when the orthographic projection shape of each sub-groove on the display panel 21 is a circle In the shape of the sub-groove, the diameter of the sub-groove gradually increases from the direction close to the display panel 21 to the direction away from the display panel 21 .
  • the length of the sub-groove refers to the size of the sub-groove along the row direction parallel to the display panel 21
  • the width of the sub-groove refers to the size of the sub-groove along the column direction parallel to the display panel 21 . size of.
  • the second groove may also include only one sub-groove.
  • the orthographic projection shape of the second groove on the display panel 21 is a closed figure. If the second groove is set to at least two When the sub-grooves are connected in sequence, the contact area of the first adhesive layer 24 arranged in the first groove and the second groove with the support layer 23 is larger, and the adhesion between the protective layer 22 and the support layer 23 is larger. The resultant force is stronger, thereby further preventing separation of the protective layer 22 from the support layer 23 .
  • the orthographic projection of the sub-groove closest to the display panel 21 on the display panel 21 covers the orthographic projection of the first groove on the display panel 21 .
  • the size of the sub-groove closest to the display panel 21 is larger than that of the first groove, and since the size of the sub-groove gradually increases from the direction close to the display panel 21 to the direction away from the display panel 21 , so , the size of each sub-groove in the second groove is larger than that of the first groove.
  • the orthographic projection of the sub-groove closest to the display panel 21 on the display panel 21 is within the orthographic projection of the first groove on the display panel 21 , and the second grooves except those closest to the display panel
  • the orthographic projections of other sub-grooves other than the sub-grooves of 21 on the display panel 21 all cover the orthographic projection of the first groove on the display panel 21 .
  • the size of the sub-groove closest to the display panel 21 is smaller than the size of the first groove, and the size of the other sub-grooves except the sub-groove closest to the display panel 21 in the second groove is larger than that of the first groove.
  • the size of the first groove is smaller than the size of the first groove, and the size of the other sub-grooves except the sub-groove closest to the display panel 21 in the second groove is larger than that of the first groove.
  • the size of the groove refers to the length and/or width of the groove
  • the size of the groove refers to the diameter of the groove
  • the depth of the first groove is less than or equal to the thickness of the protective layer 22 , and the thickness of the protective layer 22 is 25 ⁇ m to 200 ⁇ m.
  • the first groove In the direction perpendicular to the light-emitting surface of the display panel 21 , when the depth of the first groove is equal to the thickness of the protective layer 22 , the first groove penetrates the protective layer 22 . At this time, the first adhesive layer 24 and the supporting layer 23 , the protective layer 22 and the display panel 21 are in contact; in the direction perpendicular to the light-emitting surface of the display panel 21, when the depth of the first groove is less than the thickness of the protective layer 22, the first groove does not penetrate the protective layer 22, and the The opening of the first groove is towards the side where the support layer 23 is located. At this time, the first adhesive layer 24 is only in contact with the support layer 23 and the protective layer 22.
  • the protective layer 22 and the support layer are mainly in contact with each other.
  • the layers 23 are easily separated, and the protective layer 22 and the display panel 21 are firmly fixed. Therefore, setting the first groove so as not to penetrate the protective layer 22 can also avoid the gap between the protective layer 22 and the support layer 23. separation occurs.
  • the thickness of the protective layer 22 is 25 ⁇ m to 200 ⁇ m.
  • the thickness of the protective layer 22 is 100 ⁇ m, in this case, the depth of the first groove can be 50 ⁇ m, 80 ⁇ m, 100 ⁇ m, etc.; or, the thickness of the protective layer 22 is 150 ⁇ m, in this case, the depth of the first groove can be 100 ⁇ m , 120 ⁇ m, 150 ⁇ m, etc.
  • the protective layer 22 has a plurality of first grooves 221 , and the plurality of first grooves 221 are distributed along the row direction and/or the column direction.
  • the protective layer 22 has four first grooves 221 , and the four first grooves 221 are distributed along the row direction parallel to the display panel 21 ; as shown in FIG. 6 , the protective layer 22 has 12 first grooves 221 .
  • the first grooves 221, and the 12 first grooves 221 are distributed in 3 rows and 4 columns, that is, there are 4 first grooves 221 in each row, and 3 first grooves 221 in each column; as shown in FIG. 7
  • the protective layer 22 has five first grooves 221, and the five first grooves 221 are distributed along the row direction parallel to the display panel 21; as shown in FIG. 8, the protective layer 22 has 20 first grooves
  • the 20 first grooves 221 are distributed in 2 rows and 10 columns, that is, 10 first grooves 221 are distributed in each row, and 2 first grooves 221 are distributed in each column.
  • the orthographic shape of the first groove 221 on the display panel 221 is a rectangle, and the length L1 of the first groove 221 in the row direction is 5 mm to 30 mm, and the first groove 221 is in the column direction.
  • the width D1 on the upper is 1mm to 3mm.
  • the first groove 221 on the protective layer 22 is a square hole, and the length L1 of the first groove 221 is 5 mm to 30 mm, for example, the length L1 of the first groove 221 is 10 mm, 20 mm, etc.
  • the width D1 of the 221 is 1 mm to 3 mm, for example, the width D1 of the first groove 221 is 1.5 mm, 2 mm, 2.5 mm, and so on.
  • the orthographic projection shape of the first groove 221 on the display panel 221 is a circle, and the diameter of the first groove 221 is 1 mm to 3 mm.
  • the first groove 221 on the protective layer 22 is a circular hole, and the diameter of the first groove 221 is 1 mm to 3 mm, for example, the diameter of the first groove 221 is 1.5 mm, 2 mm, 2.5 mm, and the like.
  • the material of the protective layer 22 can be PI (Polyimide, polyimide), PET (Polyethylene Terephthalate, polyethylene terephthalate), PE (Polyethylene, polyethylene), TPU (Thermoplastic polyurethanes, thermoplastic polyurethanes) Any one or more of elastomer rubber), the elastic modulus of the protective layer 22 is 2Gpa to 7Gpa; the material of the support layer 23 is SUS (stainless steel), copper alloy, aluminum alloy, titanium alloy and other metals and metal alloys, And in the direction perpendicular to the light-emitting surface of the display panel 21 , the thickness of the support layer 23 is 30 ⁇ m to 200 ⁇ m.
  • the orthographic shape of the first groove 221 on the display panel 21 and the orthographic shape of the second groove on the display panel 21 may be the same or different; and for the first adhesive layer 24, its It can only be located in the first groove 221 and the second groove.
  • the first adhesive layer 24 provided in the first groove 221 and the second groove, the first adhesive layer 24
  • the support layer 23 is on the side away from the protective layer 22 .
  • the orthographic projection of the support layer 23 on the display panel 21 is also located in the plane area B2, that is, the orthographic projection of the support layer 23 on the display panel 21 is located in both the curved area A2 and the plane area B2.
  • a fourth adhesive layer (not shown in FIGS. 2 to 4) is provided between the display panel 21 and the protective layer 22, and a fifth adhesive layer is provided between the protective layer 22 and the support layer 23
  • the adhesive layer (not shown in FIG. 2 to FIG. 4 ) is used to bond the display panel 21 at the plane area B2 and the protective layer 22 at the plane area B2 together through the fourth adhesive layer, and through the fifth adhesive layer.
  • the tie layer bonds the protective layer 22 at the plane area B2 and the support layer 23 at the plane area B2 together.
  • the display panel 21 includes a display area, and the display area includes at least a plane area B2.
  • the display area completely overlaps with the plane area B2; in the second optional embodiment, the display area includes the plane area B2 and a part of the curved area A2; in the third optional embodiment In the embodiment of the present invention, the display area includes a flat area B2 and all the curved area A2.
  • the display area refers to the screen display area of the display panel 21, which can be displayed only in the flat area B2, but not in the curved area A2.
  • the display area and the flat area B2 are completely overlapped. That is, the display area only includes the plane area B2; alternatively, the display area can also be displayed at the plane area B2 and part of the curved area A2, while the other part of the curved area A2 is not displayed.
  • the display area includes the plane area B2 and part of the curved area A2. Or, it can also be displayed in the plane area B2 and all the curved areas A2, in this case, the display area includes the plane area B2 and all the curved areas A2.
  • the positional relationship between the display area and the flat area B2 and the curved area A2 is determined according to the actual product, which is not limited in this embodiment of the present application.
  • the plane area B2 includes two oppositely disposed first sides and two oppositely disposed second sides, and the included angle between the first and second sides is not zero.
  • the curved area A2 is located on the side where any one of the first sides or any one of the second sides is located; or, the curved area A2 is located on the side where the two first sides or the two second sides are located; or, the curved area A2 is on the side where the two first sides and the two second sides are.
  • the shape of the plane area B2 is a quadrilateral, which includes two oppositely arranged first sides and two oppositely arranged second sides, the two first sides are parallel to each other, and the two second sides are parallel to each other , and the angle between the first side and the second side is not 0, for example, the angle between the first side and the second side is 90°, that is, the shape of the plane area B2 is a rectangle at this time .
  • the position of the curved area A2 is different.
  • the curved area A2 can be located on one or more sides of the flat area B2, and the position of the curved area A2 is determined according to the specific type of the display device.
  • the curved surface area A2 is located on the side where any first side edge or any second side edge is located.
  • the curved surface area A2 is only provided on one side of the plane area B2.
  • the display device when the display device is a rollable display device, the display device further includes a scroll, and the scroll is connected to the display panel 21, and the scroll is used to realize The curling and unfolding of the display panel 21, therefore, the edge position of the side where the display panel 21 is fixed to the reel cannot be set to a curved surface structure.
  • the curved area A2 is located at the edge of the first side of the display panel 21 , and the first side and the second side are disposed opposite to each other.
  • the curved area A2 is located on the side where the two first sides or the two second sides are located, that is to say, the curved area A2 is disposed opposite to the plane area B2 Curved areas A2 are provided on both sides, and at this time, the number of curved areas A2 is two.
  • the display device may be a foldable display device, and the foldable display device is folded or unfolded along the folding axis.
  • the curved surface area A2 is located on the side where the two first side edges are located, and at this time, the curved surface area A2 is not provided on the side where the two second side edges are located;
  • the curved surface area A2 is located on the side where the two second side edges are located, and at this time, the curved surface area A2 is not provided on the side where the two first side edges are located.
  • the curved area A2 is located on the side where the two first side edges and the two second side edges are located, that is, on the side where the four side edges of the plane area B2 are located.
  • a curved surface area A2 is provided, and at this time, the number of the curved surface area A2 is four.
  • the display device may be a watch.
  • the display device further includes: a second adhesive layer, a polarizer, a third adhesive layer and a cover plate that are sequentially stacked on the light-emitting surface of the display panel 21 , the second adhesive layer, the polarizer, The third adhesive layer and the cover plate are disposed away from the display panel 21 in sequence.
  • the second adhesive layer is arranged on the light-emitting surface of the display panel 21, the polarizer is arranged on the side of the second adhesive layer away from the display panel 21, and the third adhesive layer is arranged on the polarizer away from the second adhesive layer.
  • the cover plate is arranged on the side of the third adhesive layer away from the polarizer.
  • the material of the second adhesive layer is PSA (Pressure Sensitive Adhesive, pressure-sensitive adhesive)
  • the material of the third adhesive layer is OCA (Optically Clear Adhesive, optically transparent adhesive)
  • the material of the cover plate can be ultra-thin Glass, transparent PI and other materials
  • the polarizer can be a stretched polarizer or a Coating (coating) polarizer.
  • the display panel 21 includes a display area 211 , a binding area 212 and a bending area 213 between the display area 211 and the binding area 212 ; the display device further includes a binding structure disposed in the binding area 212 31, and the flexible circuit board 32 bound with the binding structure 31, the binding structure 31 and the flexible circuit board 32 are located on the opposite side of the light-emitting side of the display panel 21, and the display panel 21 located in the binding area 212 is adhered to the support layer 23 catch.
  • the display panel 21 is divided into a display area 211 , a binding area 212 and a bending area 213 according to the functions of each area.
  • the bending area 213 is located between the display area 211 and the binding area 212 .
  • 211 refers to the screen display area of the display panel 21
  • the binding area 212 refers to the area where the display panel 21 is bound with the binding structure 31 and the flexible circuit board 32.
  • the binding structure 31 and the flexible circuit board 32 need to be fixed to the opposite side of the light-emitting side of the display panel 21. Therefore, the display panel 21 needs to be bent, and the bending area is the bending area 213. .
  • the display device further includes a binding structure 31 disposed in the binding area 212, and a flexible circuit board 32 bound with the binding structure 31.
  • the binding structure 31 is used for binding the display panel 21 and the flexible circuit board 32 together.
  • the binding structure 31 and the flexible circuit board 32 are fixed on the opposite side of the light-emitting side of the display panel 21 by bending the bending area 213; and , after the bending area 213 is bent, the display panel 21 located in the binding area 212 is bonded to the support layer 23 .
  • the binding structure 31 is COF (Chip On Film, chip on film) or COP (Chip On Pi). If the binding structure 31 is a COF, the COF is pressed and attached to the binding area 212 of the display panel 21, and then the COF is bound to the flexible circuit board 32; if the binding structure 31 is a COP, since the COP is directly It is formed on the binding area 212 of the display panel 21 . Therefore, it is only necessary to bind the COP to the flexible circuit board 32 .
  • COF Chip On Film, chip on film
  • COP Chip On Pi
  • the curved surface area A2 is only set on one side of the plane area B2, and the curved surface area A2 is located on the side of the display area 211 close to the binding area 212; for a foldable display device, The curved area A2 is arranged on opposite sides of the plane area B2, and the bending area 213 and the binding area 212 can be arranged on the side where any curved area A2 is located.
  • sectional views taken along the section C-C' shown in FIG. 10 are the sectional views shown in FIGS. 2 to 4 .
  • the display device can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, monitor, notebook computer, navigator, etc., and the product or component also has a folding function or a curling function.
  • the first groove and the second groove are mutually Therefore, when the first adhesive layer is arranged in the first groove and the second groove, the adhesive force between the first adhesive layer and the protective layer and the supporting layer is enhanced, so that the display panel formed with the protective layer can be
  • the support layers with the curved surface structure are stably and firmly attached together to avoid separation of the protective layer and the support layer, thereby ensuring the normal progress of the subsequent assembly process of the display device and improving the reliability of the product.
  • FIG. 11 a flowchart of a method for manufacturing a display device according to an embodiment of the present application is shown, which may specifically include the following steps:
  • Step 1101 providing a display panel; the display panel includes a flat area and a curved area located on at least one side of the flat area.
  • a pixel driving circuit is formed on the flexible substrate, then a light emitting device layer is formed on the side of the pixel driving circuit away from the flexible substrate, then an encapsulation layer covering the light emitting device layer is formed, and finally an encapsulation layer is formed on the encapsulation layer.
  • a touch function layer is formed on the side away from the light emitting device layer to obtain the display panel 21 .
  • the display panel 21 includes a flat area B2 and a curved area A2 located on at least one side of the flat area B2.
  • the curved area A2 may be provided on one side of the plane area B2
  • the curved area A2 may be provided on opposite sides of the plane area B2
  • the curved area A2 may be provided on all four sides of the plane area B2.
  • a protective layer is formed on a side away from the light-emitting surface of the display panel; in a direction perpendicular to the light-emitting surface of the display panel, the protective layer has at least one first groove.
  • a protective layer 22 is formed on the side away from the light-emitting surface of the display panel 21 , and the orthographic projection of the protective layer 22 on the display panel 21 Located in the plane area B2 and the curved area A2 of the display panel 21; and, in the direction perpendicular to the light-emitting surface of the display panel 21, the protective layer 22 has at least one first groove 221, and each first groove 221 can penetrate through the protective layer The layer 22 may not penetrate the protective layer 22 .
  • Step 1103 A support layer is formed on the side of the protective layer away from the display panel; the orthographic projection of the support layer on the display panel is at least located in the curved area, and is perpendicular to the light-emitting surface of the display panel. In the direction, the support layer has a second groove therethrough.
  • a support layer 23 can be formed on the side of the protective layer 22 away from the display panel 21 .
  • the orthographic projection of the support layer 23 on the display panel 21 is located at least at the curved area A2 of the display panel 21 .
  • the supporting layer 23 is preliminarily fabricated into a curved surface structure by a stamping process, so that the supporting layer 23 includes a plane structure and a curved surface structure, and in the direction perpendicular to the light-emitting surface of the display panel 21, the supporting layer 23 also has a second concave penetrating through it. Slot 231.
  • the orthographic projection of the first groove 221 on the display panel 21 and the orthographic projection of the second groove 231 on the display panel 21 have overlapping areas, and the orthographic projection of the second groove 231 on the display panel 21 is located in the curved area A2; the number of the second grooves 231 may be one or more.
  • the second groove 231 includes at least two sub-grooves 2311 connected in sequence, and for any two adjacent sub-grooves 2311, the sub-grooves close to the display panel 21
  • the orthographic projection of the groove 2311 on the display panel 21 is located away from the sub-groove 2311 of the display panel 21 in the orthographic projection of the display panel 21 .
  • the orthographic projection of the sub-groove 2311 closest to the display panel 21 on the display panel 21 covers the orthographic projection of the first groove 221 on the display panel 21 ; as shown in FIG. 13 , the orthographic projection of the sub-groove 2311 closest to the display panel 21
  • the orthographic projection of the sub-groove 2311 of 21 on the display panel 21 is located within the orthographic projection of the first groove 221 on the display panel 21, and the second groove 231 except the sub-groove 2311 closest to the display panel 21
  • the orthographic projections of the other sub-grooves 2311 on the display panel 21 all cover the orthographic projections of the first grooves 221 on the display panel 21 .
  • the display panel 21 and the flexible circuit board 32 can be bound on the binding area 212 of the display panel 21 through the binding structure 31 first. Then, a second adhesive layer, a polarizer, a third adhesive layer and a cover plate are sequentially formed on the light-emitting surface of the display panel 21 , and then a support layer 23 is formed on the side of the protective layer 22 away from the display panel 21 .
  • Step 1104 forming a first adhesive layer in the first groove and the second groove.
  • the first adhesive layer 24 is formed in the first groove 221 and the second groove 231 , so as to obtain as shown in FIG. 2 to the structure shown in Figure 4.
  • the first adhesive layer 24 may be formed in the first groove 221 and the second groove 231 by a process such as spraying or dispensing.
  • the first adhesive layer 24 needs to be cured to strengthen the adhesive effect between the display panel 21 with the protective layer 22 and the support layer 23 .
  • the material of the first adhesive layer 24 can be UV-curable adhesive or heat-curable adhesive.
  • UV Ultraviolet Rays, ultraviolet light
  • the bonding layer 24 is used to achieve curing treatment.
  • heat treatment can be used to cure the first bonding layer 24 .
  • the bending area 213 needs to be bent, so that the binding structure 31 and the flexible circuit board 32 are fixed at a distance away from the display.
  • One side of the light-emitting surface of the panel 21 One side of the light-emitting surface of the panel 21 .
  • the first groove and the second groove are mutually Therefore, when the first adhesive layer is arranged in the first groove and the second groove, the adhesive force between the first adhesive layer and the protective layer and the supporting layer is enhanced, so that the display panel formed with the protective layer can be
  • the support layers with the curved surface structure are stably and firmly attached together to avoid separation of the protective layer and the support layer, thereby ensuring the normal progress of the subsequent assembly process of the display device and improving the reliability of the product.
  • 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 may be implemented by means of hardware comprising several different elements and 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.

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Abstract

显示装置，涉及显示技术领域。本申请通过在远离显示面板出光面的一侧设置保护层，以及在保护层远离显示面板的一侧设置支撑层，保护层具有至少一个第一凹槽，支撑层具有贯穿的第二凹槽，第一凹槽在显示面板上的正投影与第二凹槽在显示面板上的正投影存在重合区域，且第二凹槽在显示面板上的正投影位于曲面区域，在第一凹槽和第二凹槽内还设置有第一粘接层。通过在位于曲面区域处的支撑层上设置贯穿的第二凹槽，并在对应区域处的保护层上设置与第二凹槽连通的第一凹槽，因此，在第一凹槽和第二凹槽内设置第一粘接层时，第一粘接层与保护层和支撑层的粘合力增强。

Description

显示装置
本申请要求在2021年03月09日提交中国专利局、申请号为202110255458.1、申请名称为“一种显示装置”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，特别是涉及一种显示装置。
背景技术
随着显示技术的不断发展，人们对显示装置的要求越来越高，为了实现美观、全面屏等诉求，需要将显示装置的边缘设计成曲面结构。
概述
本申请一些实施例提供了如下技术方案：
第一方面，提供了一种显示装置，包括：显示面板；
保护层，设置在远离所述显示面板出光面的一侧；以及
支撑层，设置在所述保护层远离所述显示面板的一侧；
其中，所述显示面板包括平面区域以及位于所述平面区域至少一侧的曲面区域，所述支撑层在所述显示面板上的正投影至少位于所述曲面区域；
在垂直于所述显示面板出光面的方向上，所述保护层具有至少一个第一凹槽，所述支撑层具有贯穿的第二凹槽，所述第一凹槽在所述显示面板上的正投影与所述第二凹槽在所述显示面板上的正投影存在重合区域，且所述第二凹槽在所述显示面板上的正投影位于所述曲面区域；
所述显示装置还包括设置在所述第一凹槽和所述第二凹槽内的第一粘接层。
可选的，所述支撑层具有与所述第一凹槽一一对应的所述第二凹槽，且每个所述第一凹槽与对应的所述第二凹槽相互连通。
可选的，所述保护层具有至少两个所述第一凹槽，所述支撑层具有至少一个所述第二凹槽，每个所述第二凹槽在所述显示面板上的正投影至少 覆盖两个所述第一凹槽在所述显示面板上的正投影。
可选的，在垂直于所述显示面板出光面的方向上，所述第二凹槽包括至少两个依次连通的子凹槽，且针对任意相邻的两个所述子凹槽，靠近所述显示面板的子凹槽在所述显示面板的正投影位于远离所述显示面板的子凹槽在所述显示面板的正投影内。
可选的，最靠近所述显示面板的子凹槽在所述显示面板上的正投影，覆盖所述第一凹槽在所述显示面板上的正投影。
可选的，最靠近所述显示面板的子凹槽在所述显示面板上的正投影，位于所述第一凹槽在所述显示面板上的正投影内，且所述第二凹槽中除最靠近所述显示面板的子凹槽外的其他子凹槽在所述显示面板上的正投影，均覆盖所述第一凹槽在所述显示面板上的正投影。
可选的，所述支撑层在所述显示面板上的正投影还位于所述平面区域。
可选的，所述显示面板包括显示区，所述显示区至少包括所述平面区域。
可选的，所述显示区与所述平面区域完全重合；或者，
所述显示区包括所述平面区域和部分的所述曲面区域；或者，
所述显示区包括所述平面区域和全部的所述曲面区域。
可选的，所述平面区域包括相对设置的两个第一侧边以及相对设置的两个第二侧边，所述第一侧边和所述第二侧边之间的夹角不为0；
所述曲面区域位于任意一个所述第一侧边或任意一个所述第二侧边所在的一侧；或者，
所述曲面区域位于所述两个第一侧边或所述两个第二侧边所在的一侧；或者，
所述曲面区域位于所述两个第一侧边和所述两个第二侧边所在的一侧。
可选的，所述第一凹槽的深度小于或等于所述保护层的厚度，所述保护层的厚度为25μm至200μm。
可选的，所述保护层具有多个第一凹槽，且所述多个第一凹槽沿行方 向和/或列方向分布。
可选的，所述第一凹槽在所述显示面板的正投影形状为矩形，且所述第一凹槽沿行方向上的长度为5mm至30mm，所述第一凹槽沿列方向上的宽度为1mm至3mm；
或者，所述第一凹槽在所述显示面板的正投影形状为圆形，且所述第一凹槽的直径为1mm至3mm。
可选的，所述显示装置还包括：依次层叠设置在所述显示面板出光面上的第二粘接层、偏光片、第三粘接层和盖板，所述第二粘接层、所述偏光片、所述第三粘接层和所述盖板依次远离所述显示面板设置。
可选的，所述显示面板包括所述显示区、绑定区以及位于所述显示区与所述绑定区之间的弯折区；
所述显示装置还包括设置在所述绑定区的绑定结构，以及与所述绑定结构绑定的柔性线路板；所述绑定结构和所述柔性线路板位于所述显示面板出光侧的相对侧，且位于所述绑定区的所述显示面板与所述支撑层粘接。
第二方面，提供了一种显示装置的制作方法，包括：
提供一显示面板；所述显示面板包括平面区域以及位于所述平面区域至少一侧的曲面区域；
在远离所述显示面板出光面的一侧形成保护层；在垂直于所述显示面板出光面的方向上，所述保护层具有至少一个第一凹槽；
在所述保护层远离所述显示面板的一侧形成支撑层；所述支撑层在所述显示面板上的正投影至少位于所述曲面区域，在垂直于所述显示面板出光面的方向上，所述支撑层具有贯穿的第二凹槽；
在所述第一凹槽和所述第二凹槽内形成第一粘接层；
其中，所述第一凹槽在所述显示面板上的正投影与所述第二凹槽在所述显示面板上的正投影存在重合区域，且所述第二凹槽在所述显示面板上的正投影位于所述曲面区域。
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显示装置的剖面示意图；
图2示出了本申请实施例的一种显示装置的剖面示意图；
图3示出了本申请实施例的另一种显示装置的剖面示意图；
图4示出了本申请实施例的再一种显示装置的剖面示意图；
图5示出了本申请实施例中的第一种保护层的平面示意图；
图6示出了本申请实施例中的第二种保护层的平面示意图；
图7示出了本申请实施例中的第三种保护层的平面示意图；
图8示出了本申请实施例中的第四种保护层的平面示意图；
图9示出了本申请实施例中的显示面板的剖面示意图；
图10示出了本申请实施例的显示装置的平面示意图；
图11示出了本申请实施例的一种显示装置的制作方法的流程图；
图12示出了本申请实施例在显示面板的背光侧形成保护层和支撑层后的第一种剖视图；
图13示出了本申请实施例在显示面板的背光侧形成保护层和支撑层后的第二种剖视图。
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，针对边缘具有曲面结构的显示装置，其包括带有保护层的显示面板11、第一粘接层12和支撑层13，带有保护层的显示面板11包括显示面板、保护层以及设置在显示面板与保护层之间的第二粘接层。在实际制作过程中，需要将支撑层13的边缘制作成具有圆弧状的 曲面结构，然后将带有保护层的显示面板11通过第一粘接层12贴附在支撑层13上，使得带有保护层的显示面板11在支撑层13的曲面区域处也弯曲，从而使得显示装置的边缘具有曲面结构。
但是，由于带有保护层的显示面板11的厚度较大，其在曲面区域A1处具有较强的回复力，使得带有保护层的显示面板11容易从弯曲状态回复至平直状态，因此，第一粘接层12无法将带有保护层的显示面板11与支撑层13牢靠地粘合在一起，造成带有保护层的显示面板11与支撑层13在曲面区域A1处产生分离。
为了保证带有保护层的显示面板11与支撑层13可以稳定地粘合在一起，可改善第一粘接层12的材料成分，优化第一粘接层12的粘接性能，暂缓常温下带有保护层的显示面板11与支撑层13的分离问题，以保证后续工序正常进行，但是，在高温高湿的信赖性测试时，带有保护层的显示面板11与支撑层13依旧会发生分离。
因此，本申请实施例通过在位于曲面区域处的支撑层上设置贯穿的第二凹槽，并在对应区域处的保护层上设置第一凹槽，第一凹槽和第二凹槽相互连通，因此，在第一凹槽和第二凹槽内设置第一粘接层时，第一粘接层与保护层和支撑层的粘合力增强，使得形成有保护层的显示面板可以与具有曲面结构的支撑层稳定、牢固地贴合在一起，避免保护层与支撑层分离，从而保证了后续的显示装置的整机组装工序正常进行，且提高了产品的信赖性。
参照图2，示出了本申请实施例的一种显示装置的剖面示意图，图3示出了本申请实施例的另一种显示装置的剖面示意图，图4示出了本申请实施例的再一种显示装置的剖面示意图。
本申请实施例提供了一种显示装置，包括：显示面板21、设置在远离显示面板21出光面一侧的保护层22，以及设置在保护层22远离显示面板21一侧的支撑层23；显示面板21包括平面区域B2以及位于平面区域B2至少一侧的曲面区域A2，支撑层23在显示面板21上的正投影至少位于曲面区域A2；在垂直于显示面板21出光面的方向上，保护层22具有至少一个第一凹槽，支撑层23具有贯穿第二凹槽，第一凹槽在显示面板21上的正 投影与第二凹槽在显示面板21上的正投影存在重合区域，且第二凹槽在显示面板21上的正投影位于曲面区域A2；显示装置还包括设置在第一凹槽和第二凹槽内的第一粘接层24。
在实际产品中，显示面板21为OLED(Organic Light Emitting Diode，有机发光二极管)显示面板，其包括柔性衬底、设置在柔性衬底上的像素驱动电路，设置在像素驱动电路远离柔性衬底一侧的发光器件层，以及覆盖发光器件层的封装层，此外，显示面板21还可以包括设置在封装层远离发光器件层一侧的触控功能层。其中，发光器件层包括阳极、阴极以及设置阳极与阴极之间的有机发光层，像素驱动电路与发光器件层中的阳极连接，用于向阳极提供电压，以驱动有机发光层发光；封装层为薄膜封装层，其包括有机封装层和/或无机封装层，以防止水氧进入显示面板21内部；触控功能层包括触控驱动电极和触控感应电极，以检测用户的触控位置。并且，显示面板21包括平面区域B2以及位于平面区域B2至少一侧的曲面区域A2。
在远离显示面板21出光面的一侧设置有保护层22，保护层22在显示面板21上的正投影位于显示面板21的平面区域B2和曲面区域A2。保护层22实际上是显示装置中的背膜，在垂直于显示面板21出光面的方向上，该保护层22具有至少一个第一凹槽，每个第一凹槽可以贯穿保护层22，也可以不贯穿保护层22。
在保护层22远离显示面板21一侧设置有支撑层23，该支撑层23在显示面板21上的正投影至少位于显示面板21的曲面区域A2处。并且，在垂直于显示面板21出光面的方向上，支撑层23也具有贯穿的第二凹槽，第二凹槽在显示面板21上的正投影位于曲面区域A2处；第二凹槽的数量可以为一个或多个，且第一凹槽在显示面板21上的正投影与第二凹槽在显示面板21上的正投影存在重合区域，也就是说，第一凹槽与第二凹槽连通。
此外，在第一凹槽和第二凹槽内还设置有第一粘接层24，第一粘接层24的材料为固化型胶，如紫外固化型胶或热固化型胶，其用于将曲面区域A2处的支撑层23与保护层22粘合在一起。
需要说明的是，在制作得到支撑层23之后，支撑层23就具有了平面结 构和曲面结构，曲面结构位于支撑层23的边缘区域，在将固定在显示面板21背光侧的保护层22与支撑层23粘合之前，保护层22和显示面板21的各个区域均为平面结构，而将固定在显示面板21背光侧的保护层22通过第一粘接层24与支撑层23粘合在一起之后，保护层22中与支撑层23的曲面结构接触的位置处也为曲面结构，相应的，对应位置处的显示面板21也为曲面结构，从而使得显示面板21具有平面区域B2以及位于平面区域B2至少一侧的曲面区域A2。另外，由于在曲面区域A2处，显示面板21的出光面呈曲面结构，因此，此时的第一凹槽和第二凹槽的延伸方向，是垂直于呈曲面结构的显示面板21的出光面的。
在实际产品中，在曲面区域A2处，支撑层23背离保护层22一侧的表面、支撑层23与保护层22接触的表面、保护层22与显示面板21接触的表面，以及显示面板21的出光面均为曲面结构，具体的，该曲面结构为弧面。
本申请实施例通过在位于曲面区域A2处的支撑层23上设置贯穿的第二凹槽，并在对应区域处的保护层22上设置第一凹槽，第一凹槽和第二凹槽相互连通，因此，在第一凹槽和第二凹槽内设置第一粘接层24时，第一粘接层24与保护层22和支撑层23的粘合力增强，使得形成有保护层22的显示面板21可以与具有曲面结构的支撑层23稳定、牢固地贴合在一起，避免保护层22与支撑层23分离，从而保证了后续工序正常进行，且提高了产品的信赖性。
在本申请一种可选的实施方式中，如图2和图3所示，支撑层23具有与第一凹槽一一对应的第二凹槽，且每个第一凹槽与对应的第二凹槽相互连通。
此时，第一凹槽的数量与第二凹槽的数量相等，且每个第一凹槽仅与其对应的第二凹槽连通，即第一凹槽与第二凹槽一一对应。
在本申请另一种可选的实施方式中，如图4所示，保护层22具有至少两个第一凹槽，支撑层23具有至少一个第二凹槽，每个第二凹槽在显示面板21上的正投影至少覆盖两个第一凹槽在显示面板21上的正投影。
此时，第一凹槽的数量小于第二凹槽的数量，支撑层23上设置的第二 凹槽的数量为至少一个，且每个第二凹槽在显示面板21上的正投影至少覆盖两个第一凹槽在显示面板21上的正投影，即每个第二凹槽与至少两个第一凹槽连通。
例如，保护层22具有4个第一凹槽，支撑层23具有2个第二凹槽，且每个第二凹槽在显示面板21上的正投影覆盖2个第一凹槽在显示面板21上的正投影；或者，保护层22具有4个第一凹槽，支撑层23具有1个第二凹槽，且该第二凹槽在显示面板21上的正投影覆盖所有的第一凹槽在显示面板21上的正投影。
在本申请实施例中，如图2至图4所示，在垂直于显示面板21出光面的方向上，第二凹槽包括至少两个依次连通的子凹槽，且针对任意相邻的两个子凹槽，靠近显示面板21的子凹槽在显示面板21的正投影位于远离显示面板21的子凹槽在显示面板21的正投影内。
通过将第二凹槽设置成至少两个依次连通的子凹槽，使得第二凹槽的侧壁呈阶梯状，并且，靠近显示面板21的子凹槽在显示面板21的正投影位于远离显示面板21的子凹槽在显示面板21的正投影内，也就是说，从靠近显示面板21到远离显示面板21的方向上，子凹槽的尺寸逐渐增大。
各个子凹槽在显示面板21上的正投影形状均为封闭图形，如矩形或圆形等。当各个子凹槽在显示面板21上的正投影形状为矩形时，从靠近显示面板21到远离显示面板21的方向上，子凹槽的长度逐渐增大，而子凹槽的宽度不变；或者，子凹槽的长度不变，而子凹槽的宽度逐渐增大；或者，子凹槽的长度和宽度均逐渐增大；当各个子凹槽在显示面板21上的正投影形状为圆形时，从靠近显示面板21到远离显示面板21的方向上，子凹槽的直径逐渐增大。其中，子凹槽的长度指的是子凹槽在沿着平行于显示面板21的行方向上的尺寸，子凹槽的宽度指的是子凹槽在沿着平行于显示面板21的列方向上的尺寸。
需要说明的是，第二凹槽也可以仅包括一个子凹槽，此时，第二凹槽在显示面板21上的正投影形状为一个封闭图形，若将第二凹槽设置成至少两个依次连通的子凹槽时，第一凹槽和第二凹槽内设置的第一粘接层24，其与支撑层23的接触面积更大，则保护层22与支撑层23之间的粘合力更 强，从而进一步防止保护层22与支撑层23分离。
如图2和图4所示，最靠近显示面板21的子凹槽在显示面板21上的正投影，覆盖第一凹槽在显示面板21上的正投影。
也就是说，最靠近显示面板21的子凹槽的尺寸大于第一凹槽的尺寸，并且，由于从靠近显示面板21到远离显示面板21的方向上，子凹槽的尺寸逐渐增大，因此，第二凹槽中的各个子凹槽的尺寸均大于第一凹槽的尺寸。
如图3所示，最靠近显示面板21的子凹槽在显示面板21上的正投影，位于第一凹槽在显示面板21上的正投影内，且第二凹槽中除最靠近显示面板21的子凹槽外的其他子凹槽在显示面板21上的正投影，均覆盖第一凹槽在显示面板21上的正投影。
也就是说，最靠近显示面板21的子凹槽的尺寸小于第一凹槽的尺寸，而第二凹槽中除最靠近显示面板21的子凹槽外的其他子凹槽，其尺寸均大于第一凹槽的尺寸。
需要说明的是，当凹槽在显示面板21上的正投影形状为矩形时，凹槽的尺寸指的是凹槽的长度和/或宽度，当凹槽在显示面板21上的正投影形状为圆形时，凹槽的尺寸指的是凹槽的直径。
在本申请实施例中，第一凹槽的深度小于或等于保护层22的厚度，保护层22的厚度为25μm至200μm。
在垂直于显示面板21出光面的方向上，当第一凹槽的深度等于保护层22的厚度时，第一凹槽贯穿保护层22，此时，第一粘接层24会与支撑层23、保护层22和显示面板21均接触；在垂直于显示面板21出光面的方向上，当第一凹槽的深度小于保护层22的厚度时，第一凹槽未贯穿保护层22，且该第一凹槽的开口是朝向支撑层23所在的一侧，此时，第一粘接层24仅与支撑层23和保护层22接触，由于在曲面区域A2处，主要是保护层22与支撑层23之间容易发生分离，而保护层22与显示面板21之间固定的很牢靠，因此，将第一凹槽设置成未贯穿保护层22，也可以避免保护层22与支撑层23之间发生分离。
其中，保护层22的厚度为25μm至200μm。例如，保护层22的厚度 为100μm，此时，第一凹槽的深度可以为50μm、80μm、100μm等；或者，保护层22的厚度为150μm，此时，第一凹槽的深度可以为100μm、120μm、150μm等。
如图5至图8所示，保护层22具有多个第一凹槽221，且多个第一凹槽221沿行方向和/或列方向分布。
如图5所示，保护层22具有4个第一凹槽221，且这4个第一凹槽221沿平行于显示面板21的行方向分布；如图6所示，保护层22具有12个第一凹槽221，且这12个第一凹槽221呈3行4列分布，即每行分布有4个第一凹槽221，每列分布有3个第一凹槽221；如图7所示，保护层22具有5个第一凹槽221，且这5个第一凹槽221沿平行于显示面板21的行方向分布；如图8所示，保护层22具有20个第一凹槽221，且这20个第一凹槽221呈2行10列分布，即每行分布有10个第一凹槽221，每列分布有2个第一凹槽221。
如图5和图6所示，第一凹槽221在显示面板221的正投影形状为矩形，且第一凹槽221沿行方向上的长度L1为5mm至30mm，第一凹槽221沿列方向上的宽度D1为1mm至3mm。此时，保护层22上的第一凹槽221为方孔，且第一凹槽221的长度L1为5mm至30mm，如第一凹槽221的长度L1为10mm、20mm等，第一凹槽221的宽度D1为1mm至3mm，如第一凹槽221的宽度D1为1.5mm、2mm、2.5mm等。
如图7和图8所示，第一凹槽221在显示面板221的正投影形状为圆形，且第一凹槽221的直径为1mm至3mm。此时，保护层22上的第一凹槽221为圆孔，且该第一凹槽221的直径为1mm至3mm，如第一凹槽221的直径为1.5mm、2mm、2.5mm等。
此外，保护层22的材料可以为PI(Polyimide，聚酰亚胺)、PET(Polyethylene Terephthalate，聚对苯二甲酸乙二醇酯)、PE(Polyethylene，聚乙烯)、TPU(Thermoplastic polyurethanes，热塑性聚氨酯弹性体橡胶)中的任意一种或多种，保护层22的弹性模量为2Gpa至7Gpa；支撑层23的材料为SUS(不锈钢)、铜合金、铝合金、钛合金等金属及金属合金，且在垂直于显示面板21出光面的方向上，支撑层23的厚度为30μm至200μ m。
需要说明的是，第一凹槽221在显示面板21上的正投影形状与第二凹槽在显示面板21上的正投影形状可以相同，也可以不同；而针对第一粘接层24，其可以仅位于第一凹槽221和第二凹槽内，当然，除了在第一凹槽221和第二凹槽内设置有第一粘接层24之外，第一粘接层24还可以位于支撑层23远离保护层22的一侧。
上述仅针对位于曲面区域A2处的显示面板21、保护层22、支撑层23和第一粘接层24的结构及其关系，下面介绍平面区域B2处的膜层结构。
具体的，支撑层23在显示面板21上的正投影还位于平面区域B2，也就是说，支撑层23在显示面板21上的正投影既位于曲面区域A2处，又位于平面区域B2处。
而在平面区域B2处，在显示面板21与保护层22之间设置有第四粘接层(图2至图4中未示出)，在保护层22与支撑层23之间设置有第五粘接层(图2至图4中未示出)，通过第四粘接层将位于平面区域B2处的显示面板21与位于平面区域B2处的保护层22粘接在一起，通过第五粘接层将位于平面区域B2处的保护层22与位于平面区域B2处的支撑层23粘接在一起。
在本申请实施例中，显示面板21包括显示区，显示区至少包括平面区域B2。在第一种可选的实施方式中，显示区与平面区域B2完全重合；在第二种可选的实施方式中，显示区包括平面区域B2和部分的曲面区域A2；在第三种可选的实施方式中，显示区包括平面区域B2和全部的曲面区域A2。
在实际产品中，显示区指的是显示面板21的画面显示区域，其可以仅在平面区域B2处进行显示，而曲面区域A2处不进行显示，此时，显示区与平面区域B2完全重合，即显示区仅包括平面区域B2；或者，也可以在平面区域B2和部分的曲面区域A2处进行显示，而另一部分的曲面区域A2处不进行显示，此时，显示区包括平面区域B2和部分的曲面区域A2；或者，也可以在平面区域B2和全部的曲面区域A2处均进行显示，此时，显示区包括平面区域B2和全部的曲面区域A2。
需要说明的是，针对显示区与平面区域B2和曲面区域A2之间的位置 关系，根据实际产品进行确定，本申请实施例对此不做限制。
在本申请实施例中，平面区域B2包括相对设置的两个第一侧边以及相对设置的两个第二侧边，第一侧边和第二侧边之间的夹角不为0。曲面区域A2位于任意一个第一侧边或任意一个第二侧边所在的一侧；或者，曲面区域A2位于两个第一侧边或两个第二侧边所在的一侧；或者，曲面区域A2位于两个第一侧边和两个第二侧边所在的一侧。
具体的，平面区域B2的形状为四边形，其包括相对设置的两个第一侧边以及相对设置的两个第二侧边，两个第一侧边相互平行，两个第二侧边相互平行，且第一侧边和第二侧边之间的夹角不为0，例如，第一侧边和第二侧边之间的夹角为90°，即此时平面区域B2的形状为矩形。
在不同的显示装置中，曲面区域A2的位置有所不同，曲面区域A2可以位于平面区域B2的一侧或多侧，曲面区域A2的位置根据显示装置的具体类型来确定。
在一可选的实施方式中，曲面区域A2位于任意一个第一侧边或任意一个第二侧边所在的一侧，此时，仅在平面区域B2的一侧设置有曲面区域A2。例如，针对只在平面区域B2的一侧设置曲面区域A2的显示装置，该显示装置为可卷曲的显示装置时，显示装置还包括卷轴，且卷轴与显示面板21连接在一起，通过卷轴来实现显示面板21的卷曲和展开，因此，显示面板21与卷轴固定的一侧的边缘位置不能设置成曲面结构，当显示面板21与卷轴固定的一侧为显示面板21第二侧的边缘位置时，曲面区域A2位于显示面板21第一侧的边缘位置，且第一侧和第二侧相对设置。
在另一可选的实施方式中，如图9所示，曲面区域A2位于两个第一侧边或两个第二侧边所在的一侧，也就是说，是在平面区域B2相对设置的两侧设置有曲面区域A2，此时，曲面区域A2的数量为2个。例如，针对在平面区域B2相对设置的两侧设置曲面区域A2的显示装置，该显示装置可以为可折叠的显示装置，可折叠的显示装置沿折叠轴进行折叠或展开，当折叠轴与两个第一侧边相互平行时，曲面区域A2位于这两个第一侧边所在的一侧，此时，在两个第二侧边所在的一侧未设置有曲面区域A2；当折叠轴与两个第二侧边相互平行时，曲面区域A2位于这两个第二侧边所在的一 侧，此时，在两个第一侧边所在的一侧未设置有曲面区域A2。
在再一可选的实施方式中，曲面区域A2位于两个第一侧边和两个第二侧边所在的一侧，也就是说，在平面区域B2的四个侧边所在的一侧均设置有曲面区域A2，此时，曲面区域A2的数量为4个。例如，针对在平面区域B2的四个侧边均设置曲面区域A2的显示装置，该显示装置可以为手表。
在本申请实施例中，显示装置还包括：依次层叠设置在显示面板21出光面上的第二粘接层、偏光片、第三粘接层和盖板，第二粘接层、偏光片、第三粘接层和盖板依次远离显示面板21设置。
也就是说，第二粘接层设置在显示面板21的出光面上，偏光片设置在第二粘接层远离显示面板21的一侧，第三粘接层设置在偏光片远离第二粘接层的一侧，盖板设置在第三粘接层远离偏光片的一侧。
其中，第二粘接层的材料为PSA(Pressure Sensitive Adhesive，压敏胶)，第三粘接层的材料为OCA(Optically Clear Adhesive，光学透明粘合剂)，盖板的材料可以为超薄玻璃、透明PI等材料，偏光片可以为拉伸型偏光片或Coating(涂覆)型偏光片。
如图10所示，显示面板21包括显示区211、绑定区212以及位于显示区211与绑定区212之间的弯折区213；显示装置还包括设置在绑定区212的绑定结构31，以及与绑定结构31绑定的柔性线路板32，绑定结构31和柔性线路板32位于显示面板21出光侧的相对侧，且位于绑定区212的显示面板21与支撑层23粘接。
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211、绑定区212和弯折区213，弯折区213位于显示区211与绑定区212之间，显示区211指的是显示面板21的画面显示区域，绑定区212指的是显示面板21与绑定结构31和柔性线路板32进行绑定的区域，由于在将显示面板21与柔性线路板32通过绑定结构31绑定之后，需要将绑定结构31和柔性线路板32固定到显示面板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213。
显示装置还包括设置在绑定区212的绑定结构31，以及与绑定结构31绑定的柔性线路板32，绑定结构31用于将显示面板21与柔性线路板32绑 定在一起。
在将显示面板21与柔性线路板32通过绑定结构31绑定之后，通过将弯折区213弯折，使得绑定结构31和柔性线路板32固定在显示面板21出光侧的相对侧；并且，在弯折区213弯折之后，将位于绑定区212的显示面板21与支撑层23粘接。
其中，绑定结构31为COF(Chip On Film，覆晶薄膜)或COP(Chip On Pi)。若绑定结构31为COF，将COF压合贴附在显示面板21的绑定区212后，然后将COF再与柔性线路板32进行绑定；若绑定结构31为COP，由于COP是直接形成在显示面板21的绑定区212上的，因此，只需将COP与柔性线路板32进行绑定即可。
需要说明的是，针对可卷曲的显示装置，只在平面区域B2的一侧设置曲面区域A2，且曲面区域A2是位于显示区211靠近绑定区212一侧的；针对可折叠的显示装置，是在平面区域B2相对设置的两侧设置曲面区域A2，而弯折区213和绑定区212可设置在任意一个曲面区域A2所在的一侧。
需要说明的是，沿图10所示的截面C-C’得到的剖视图，为图2至图4所示的剖视图。
在实际应用中，显示装置可以为电子纸、手机、平板电脑、显示器、笔记本电脑、导航仪等任何具有显示功能的产品或部件，且该产品或部件还具有折叠功能或者卷曲功能。
在本申请实施例中，通过在位于曲面区域处的支撑层上设置贯穿的第二凹槽，并在对应区域处的保护层上设置第一凹槽，第一凹槽和第二凹槽相互连通，因此，在第一凹槽和第二凹槽内设置第一粘接层时，第一粘接层与保护层和支撑层的粘合力增强，使得形成有保护层的显示面板可以与具有曲面结构的支撑层稳定、牢固地贴合在一起，避免保护层与支撑层分离，从而保证了后续的显示装置的整机组装工序正常进行，且提高了产品的信赖性。
参照图11，示出了本申请实施例的一种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1101，提供一显示面板；所述显示面板包括平面区域以及位于所 述平面区域至少一侧的曲面区域。
在本申请实施例中，首先，在性衬底上形成像素驱动电路，然后在像素驱动电路远离柔性衬底的一侧形成发光器件层，接着形成覆盖发光器件层的封装层，最后在封装层远离发光器件层的一侧形成触控功能层，以得到显示面板21。
其中，显示面板21包括平面区域B2以及位于平面区域B2至少一侧的曲面区域A2。具体的，可以在平面区域B2的一侧设置曲面区域A2，也可以在平面区域B2相对设置的两侧设置曲面区域A2，还可以在平面区域B2的四个侧边均设置曲面区域A2。
步骤1102，在远离所述显示面板出光面的一侧形成保护层；在垂直于所述显示面板出光面的方向上，所述保护层具有至少一个第一凹槽。
在本申请实施例中，如图12和图13所示，在制作得到显示面板21之后，在远离显示面板21出光面的一侧形成保护层22，保护层22在显示面板21上的正投影位于显示面板21的平面区域B2和曲面区域A2；并且，在垂直于显示面板21出光面的方向上，该保护层22具有至少一个第一凹槽221，每个第一凹槽221可以贯穿保护层22，也可以不贯穿保护层22。
步骤1103，在所述保护层远离所述显示面板的一侧形成支撑层；所述支撑层在所述显示面板上的正投影至少位于所述曲面区域，在垂直于所述显示面板出光面的方向上，所述支撑层具有贯穿的第二凹槽。
在本申请实施例中，如图12和图13所示，在远离显示面板21出光面的一侧形成保护层22之后，可在保护层22远离显示面板21的一侧形成支撑层23，该支撑层23在显示面板21上的正投影至少位于显示面板21的曲面区域A2处。
该支撑层23预先采用冲压工艺将边缘制作成曲面结构，使得支撑层23包括平面结构和曲面结构，并且，在垂直于显示面板21出光面的方向上，支撑层23也具有贯穿的第二凹槽231。其中，第一凹槽221在显示面板21上的正投影与第二凹槽231在显示面板21上的正投影存在重合区域，且第二凹槽231在显示面板21上的正投影位于曲面区域A2；第二凹槽231的数量可以为一个或多个。
具体的，在垂直于显示面板21出光面的方向上，第二凹槽231包括至少两个依次连通的子凹槽2311，且针对任意相邻的两个子凹槽2311，靠近显示面板21的子凹槽2311在显示面板21的正投影位于远离显示面板21的子凹槽2311在显示面板21的正投影内。
如图12所示，最靠近显示面板21的子凹槽2311在显示面板21上的正投影，覆盖第一凹槽221在显示面板21上的正投影；如图13所示，最靠近显示面板21的子凹槽2311在显示面板21上的正投影，位于第一凹槽221在显示面板21上的正投影内，且第二凹槽231中除最靠近显示面板21的子凹槽2311外的其他子凹槽2311在显示面板21上的正投影，均覆盖第一凹槽221在显示面板21上的正投影。
需要说明的是，在远离显示面板21出光面的一侧形成保护层22之后，可先在显示面板21的绑定区212，通过绑定结构31将显示面板21与柔性线路板32绑定在一起；然后，在显示面板21的出光面上依次形成第二粘接层、偏光片、第三粘接层和盖板，接着再在保护层22远离显示面板21的一侧形成支撑层23。
步骤1104，在所述第一凹槽和所述第二凹槽内形成第一粘接层。
在本申请实施例中，在保护层22远离显示面板21的一侧形成支撑层23之后，在第一凹槽221和第二凹槽231内形成第一粘接层24，以得到如图2至图4所示的结构。具体的，可采用喷涂或点胶等工艺在第一凹槽221和第二凹槽231内形成第一粘接层24。
此外，还需要对第一粘接层24进行固化处理，以强化带有保护层22的显示面板21与支撑层23之间的粘接效果。该第一粘接层24的材料可以为紫外固化型胶或热固化型胶，当第一粘接层24的材料为紫外固化型胶，可采用UV(Ultraviolet Rays，紫外光)照射第一粘接层24以实现固化处理，当第一粘接层24的材料为热固化型胶时，可采用加热处理以使第一粘接层24固化。
需要说明的是，在第一凹槽221和第二凹槽231内形成第一粘接层24之后，需要将弯折区213弯折，使得绑定结构31和柔性线路板32固定在远离显示面板21出光面的一侧。
在本申请实施例中，通过在位于曲面区域处的支撑层上设置贯穿的第二凹槽，并在对应区域处的保护层上设置第一凹槽，第一凹槽和第二凹槽相互连通，因此，在第一凹槽和第二凹槽内设置第一粘接层时，第一粘接层与保护层和支撑层的粘合力增强，使得形成有保护层的显示面板可以与具有曲面结构的支撑层稳定、牢固地贴合在一起，避免保护层与支撑层分离，从而保证了后续的显示装置的整机组装工序正常进行，且提高了产品的信赖性。
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 (15)

  1. 一种显示装置，包括：
    显示面板；
    保护层，设置在远离所述显示面板出光面的一侧；以及
    支撑层，设置在所述保护层远离所述显示面板的一侧；
    其中，所述显示面板包括平面区域以及位于所述平面区域至少一侧的曲面区域，所述支撑层在所述显示面板上的正投影至少位于所述曲面区域；
    在垂直于所述显示面板出光面的方向上，所述保护层具有至少一个第一凹槽，所述支撑层具有贯穿的第二凹槽，所述第一凹槽在所述显示面板上的正投影与所述第二凹槽在所述显示面板上的正投影存在重合区域，且所述第二凹槽在所述显示面板上的正投影位于所述曲面区域；
    所述显示装置还包括设置在所述第一凹槽和所述第二凹槽内的第一粘接层。
  2. 根据权利要求1所述的显示装置，其中，所述支撑层具有与所述第一凹槽一一对应的所述第二凹槽，且每个所述第一凹槽与对应的所述第二凹槽相互连通。
  3. 根据权利要求1所述的显示装置，其中，所述保护层具有至少两个所述第一凹槽，所述支撑层具有至少一个所述第二凹槽，每个所述第二凹槽在所述显示面板上的正投影至少覆盖两个所述第一凹槽在所述显示面板上的正投影。
  4. 根据权利要求2或3所述的显示装置，其中，在垂直于所述显示面板出光面的方向上，所述第二凹槽包括至少两个依次连通的子凹槽，且针对任意相邻的两个所述子凹槽，靠近所述显示面板的子凹槽在所述显示面板的正投影位于远离所述显示面板的子凹槽在所述显示面板的正投影内。
  5. 根据权利要求4所述的显示装置，其中，最靠近所述显示面板的子凹槽在所述显示面板上的正投影，覆盖所述第一凹槽在所述显示面板上的正投影。
  6. 根据权利要求4所述的显示装置，其中，最靠近所述显示面板的子 凹槽在所述显示面板上的正投影，位于所述第一凹槽在所述显示面板上的正投影内，且所述第二凹槽中除最靠近所述显示面板的子凹槽外的其他子凹槽在所述显示面板上的正投影，均覆盖所述第一凹槽在所述显示面板上的正投影。
  7. 根据权利要求1-6任一项所述的显示装置，其中，所述支撑层在所述显示面板上的正投影还位于所述平面区域。
  8. 根据权利要求1-7任一项所述的显示装置，其中，所述显示面板包括显示区，所述显示区至少包括所述平面区域。
  9. 根据权利要求8所述的显示装置，其中，所述显示区与所述平面区域完全重合；或者，
    所述显示区包括所述平面区域和部分的所述曲面区域；或者，
    所述显示区包括所述平面区域和全部的所述曲面区域。
  10. 根据权利要求1-9任一项所述的显示装置，其中，所述平面区域包括相对设置的两个第一侧边以及相对设置的两个第二侧边，所述第一侧边和所述第二侧边之间的夹角不为0；
    所述曲面区域位于任意一个所述第一侧边或任意一个所述第二侧边所在的一侧；或者，
    所述曲面区域位于所述两个第一侧边或所述两个第二侧边所在的一侧；或者，
    所述曲面区域位于所述两个第一侧边和所述两个第二侧边所在的一侧。
  11. 根据权利要求1-10任一项所述的显示装置，其中，所述第一凹槽的深度小于或等于所述保护层的厚度，所述保护层的厚度为25μm至200μm。
  12. 根据权利要求1-11任一项所述的显示装置，其中，所述保护层具有多个第一凹槽，且所述多个第一凹槽沿行方向和/或列方向分布。
  13. 根据权利要求1-12任一项所述的显示装置，其中，所述第一凹槽在所述显示面板的正投影形状为矩形，且所述第一凹槽沿行方向上的长度为5mm至30mm，所述第一凹槽沿列方向上的宽度为1mm至3mm；
    或者，所述第一凹槽在所述显示面板的正投影形状为圆形，且所述第一凹槽的直径为1mm至3mm。
  14. 根据权利要求1-13任一项所述的显示装置，其中，所述显示装置还包括：依次层叠设置在所述显示面板出光面上的第二粘接层、偏光片、第三粘接层和盖板，所述第二粘接层、所述偏光片、所述第三粘接层和所述盖板依次远离所述显示面板设置。
  15. 根据权利要求8或9所述的显示装置，其中，所述显示面板包括所述显示区、绑定区以及位于所述显示区与所述绑定区之间的弯折区；
    所述显示装置还包括设置在所述绑定区的绑定结构，以及与所述绑定结构绑定的柔性线路板；所述绑定结构和所述柔性线路板位于所述显示面板出光侧的相对侧，且位于所述绑定区的所述显示面板与所述支撑层粘接。
PCT/CN2021/128659 2021-03-09 2021-11-04 显示装置 WO2022188441A1 (zh)

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