WO2022099780A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置 Download PDF

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Publication number
WO2022099780A1
WO2022099780A1 PCT/CN2020/130857 CN2020130857W WO2022099780A1 WO 2022099780 A1 WO2022099780 A1 WO 2022099780A1 CN 2020130857 W CN2020130857 W CN 2020130857W WO 2022099780 A1 WO2022099780 A1 WO 2022099780A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
display panel
curved portion
curved
island
Prior art date
Application number
PCT/CN2020/130857
Other languages
English (en)
French (fr)
Inventor
汪文强
Original Assignee
武汉华星光电半导体显示技术有限公司
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 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US17/266,151 priority Critical patent/US12016218B2/en
Publication of WO2022099780A1 publication Critical patent/WO2022099780A1/zh

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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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/12—Mountings, e.g. non-detachable insulating substrates
    • H01L23/13—Mountings, e.g. non-detachable insulating substrates characterised by the shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/481—Internal lead connections, e.g. via connections, feedthrough structures
    • 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
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • 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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • 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

Definitions

  • the present application relates to the technical field of display panels, and in particular, to a display panel and a display device.
  • the flexible display panel has the characteristics of being bendable or foldable.
  • the retractable flexible display panel is thinner and has lower power consumption. It has the advantages of adjustable mechanical properties, etc., and can also achieve good display effect when stretched in any direction. Therefore, retractable and flexible display panels have been paid more and more attention.
  • the design problem of the current retractable flexible display is mainly that under the premise that the module achieves a certain display pixel density, there will be mutual interference between the display integrated unit structure and the voltage transmission line structure, and the mechanical properties of the overall module are not ideal. , in the case of being stretched or compressed, the display device layer and the voltage transmission layer in the display screen are prone to permanent fracture, and the flexible display panel has problems such as unsatisfactory expansion and contraction times.
  • the embodiments of the present application provide a display panel and a display device, so as to solve the problem that when the existing flexible display panel is bent, folded, stretched or compressed, the display integrated unit and the voltage transmission unit in the display panel are easily connected.
  • the problem of mutual interference occurs, and the circuit layer or device layer of the flexible panel is prone to permanent breakage, the number of times of expansion and contraction and the unsatisfactory expansion and contraction effect, etc., and the comprehensive performance of the flexible display panel is improved.
  • Embodiments of the present application provide a display panel and a display device, so as to improve the quality and overall performance of a retractable flexible display panel.
  • a display panel is provided, and the display panel includes:
  • the unit islands are arranged in an array in the first direction and the second direction of the base substrate, and the unit islands are separated from each other;
  • connecting parts connect the adjacent unit islands to each other;
  • the light-emitting unit is disposed on the unit island, and the light-emitting unit further includes a plurality of light-emitting sub-pixels;
  • the signal line is arranged on the connection part and is electrically connected to the light-emitting unit;
  • each of the connecting portions is connected with each side of the corresponding unit island, the starting end of the connecting portion is set at the center of each side of the unit island, and each each of the connecting parts includes a curved part arranged in at least three bending directions and at least one straight part;
  • the display panel further includes a hollow area between the unit island and the connecting portion.
  • the curved portion includes a first curved portion, a second curved portion and a third curved portion
  • the first curved portion is connected with the side of the unit island, the second curved portion is connected with one end of the first curved portion, and one end of the straight portion is connected with the second curved portion. One end is connected, and the other end of the straight portion is connected with one end of the third curved portion.
  • the connecting portion includes a first connecting portion and a second connecting portion
  • the first connecting portion and the second connecting portion are respectively arranged on two adjacent sides of the unit island, and the third curved portion of the first connecting portion and the second connecting portion are The distance between the second curved parts is smaller than the distance between the straight part of the first connection part and the first curved part or the second curved part of the first connection part.
  • the center of the circle corresponding to the arc of the inner edge of the first curved portion is the vertical foot point of the center on the side edge corresponding to the first curved portion and the midpoint of the arc The angle formed between them is less than 90°.
  • the radius of the arc corresponding to the inner edge of the first curved portion is greater than the radius of the arc corresponding to the inner edge of the second curved portion.
  • the adjacent unit islands are connected to each other through the third curved portion.
  • the connecting portion further includes a transition portion, one end of the transition portion is connected to the side edge of the unit island, and the other end of the transition portion is connected to the first curved portion
  • One end of the connecting portion is connected with the side edge of the unit island with a rounded corner.
  • the connecting portions on two opposite sides of the unit island are arranged in a center-symmetric manner with respect to the geometric center of the unit island.
  • a display panel comprising:
  • the unit islands are arranged in an array in the first direction and the second direction of the base substrate, and the unit islands are separated from each other;
  • connecting parts connect the adjacent unit islands to each other;
  • the light-emitting unit is disposed on the unit island;
  • the signal line is arranged on the connection part and is electrically connected to the light-emitting unit;
  • each of the connecting portions is connected with each side of the corresponding unit island, the starting end of the connecting portion is set at the center of each side of the unit island, and each Each of the connecting portions includes curved portions arranged in at least three bending directions and at least one straight portion.
  • the curved portion includes a first curved portion, a second curved portion and a third curved portion
  • the first curved portion is connected with the side of the unit island, the second curved portion is connected with one end of the first curved portion, and one end of the straight portion is connected with the second curved portion. One end is connected, and the other end of the straight portion is connected with one end of the third curved portion.
  • the connecting portion includes a first connecting portion and a second connecting portion
  • the first connecting portion and the second connecting portion are respectively arranged on two adjacent sides of the unit island, and the third curved portion of the first connecting portion and the second connecting portion are The distance between the second curved parts is smaller than the distance between the straight part of the first connection part and the first curved part or the second curved part of the first connection part.
  • the center of the circle corresponding to the arc of the inner edge of the first curved portion is the vertical foot point of the center on the side edge corresponding to the first curved portion and the midpoint of the arc The angle formed between them is less than 90°.
  • the radius of the arc corresponding to the inner edge of the first curved portion is greater than the radius of the arc corresponding to the inner edge of the second curved portion.
  • the adjacent unit islands are connected to each other through the third curved portion.
  • the display panel further includes a hollow area between the unit island and the connecting portion, and the hollow area is filled with an elastic organic layer.
  • the connecting portion further includes a transition portion, one end of the transition portion is connected to the side edge of the unit island, and the other end of the transition portion is connected to the first curved portion
  • One end of the connecting portion is connected with the side edge of the unit island with a rounded corner.
  • the connecting portions on two opposite sides of the unit island are arranged in a center-symmetric manner with respect to the geometric center of the unit island.
  • the width of the curved portion of the connecting portion is the same as the width of the straight portion of the connecting portion.
  • the light-emitting unit includes a plurality of light-emitting sub-pixels
  • the light-emitting sub-pixels include red sub-pixels, blue sub-pixels and green sub-pixels
  • the area of the light-emitting region corresponding to the blue sub-pixels is is larger than the area of the light-emitting region corresponding to the red sub-pixel
  • the area of the light-emitting region corresponding to the blue sub-pixel is larger than the area of the light-emitting region corresponding to the green sub-pixel
  • the arrangement shape of the sub-pixels and the green sub-pixels is the same as the arrangement shape of each of the unit islands.
  • the display device includes the display panel provided in the present application, and the display panel includes:
  • the unit islands are arranged in an array in the first direction and the second direction of the base substrate, and the unit islands are separated from each other;
  • connecting parts connect the adjacent unit islands to each other;
  • the light-emitting unit is disposed on the unit island;
  • the signal line is arranged on the connection part and is electrically connected to the light-emitting unit;
  • each of the connecting portions is connected with each side of the corresponding unit island, the starting end of the connecting portion is set at the center of each side of the unit island, and each Each of the connecting portions includes curved portions arranged in at least three bending directions and at least one straight portion.
  • Embodiments of the present application provide a display panel and a display device, by arranging unit islands arranged in an array on a base substrate of the display panel, and setting a corresponding connection portion on each side of the unit island, and the connection portion is connected to The unit islands are hollowed out.
  • the connecting portion provided in the embodiment of the present application includes a plurality of curved portions and at least one straight portion. Since the connecting part is provided with multiple curved parts, when the flexible display panel is stretched or compressed, the curved part is more easily stretched, so that the display panel is more easily deformed and the deformation effect is better. At the same time, the unit island is connected to the There is no mutual interference between the signal lines on the external part, which effectively improves the telescopic performance of the retractable flexible display panel and improves the display quality and reliability of the flexible display panel.
  • FIG. 1 is a schematic plan view of a flexible display panel according to an embodiment of the present application
  • FIG. 2 is a schematic partial structure diagram of a flexible display panel provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a display unit provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a display unit provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a corresponding connection part in a common connection area provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of the retractable flexible panel provided by an embodiment of the present application before being stretched by force;
  • FIG. 7 is a schematic structural diagram of the retractable flexible panel provided by the embodiment of the present application after deformation
  • FIG. 8 is a schematic diagram of an arrangement structure of signal lines according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of an arrangement structure of sub-pixels in an embodiment of the present application.
  • FIG. 10 is a schematic cross-sectional view of the connecting portion and the signal line along the Y1-Y2 direction provided by the embodiment of the application;
  • FIG. 11 is a schematic cross-sectional view of the connecting portion and the signal line along the X1-X2 direction according to an embodiment of the present application.
  • the display panel provided in the embodiment of the present application is a retractable flexible display panel.
  • the retractable flexible display panel When the retractable flexible display panel is stretched or compressed by an external force, the display device layer and the circuit device layer inside the module will not break or fail.
  • the flexible display panel provided by the embodiment of the present application has good mechanical properties, high number of times of expansion and contraction, and also has a good display effect.
  • FIG. 1 is a schematic plan view of a flexible display panel according to an embodiment of the present application.
  • the flexible display panel 10 includes a base substrate 1 and a wiring area 3 disposed on the base substrate 1 .
  • the wiring area 3 of the flexible display panel 10 can be arranged on one side of the base substrate 1 to reduce the influence of the wiring area 3 on the display quality.
  • the wiring area 3 of the flexible display panel 10 may be disposed on both sides of the base substrate 1 near the edge, so as to reduce the influence of the wiring area 3 on the display quality.
  • the flexible display panel 10 further includes a central display area 2 .
  • the light-emitting unit and the pixel unit are arranged in the central display area 2 .
  • the light-emitting units in the central display area 2 are designed to improve the scalability and display quality of the flexible display panel 10 .
  • the central display area 2 also includes a unit island 4 and a connecting portion 41 .
  • a plurality of unit islands 4 are arranged in the center display area 2 of the display panel in an array.
  • the unit islands 4 may be display light-emitting units on the display panel, and each display light-emitting unit corresponds to one unit island 4 .
  • the unit islands 4 can be arranged in an array in the first direction and the second direction of the base substrate 1, and the first direction and the second direction can be perpendicular to each other or at a certain angle.
  • the width direction of the base substrate 1 is the same, and the second direction is the same as the length direction of the base substrate 1 .
  • the unit islands 4 When arranging the unit islands 4 , the unit islands 4 are separated from each other, that is, the adjacent unit islands 4 are not in contact with each other, but are connected by the connecting portion 41 , and the connection portion 41 and the unit island 4 are hollow areas. 6.
  • the hollow area 6 is filled with an elastic organic layer and runs through the entire display functional layer.
  • the connecting portion 41 is correspondingly disposed at the side position of each unit island 4.
  • the unit island 4 is described by taking a square as an example, and the square is 45° from the horizontal direction. direction is set.
  • the unit island 4 can also be in other shapes such as rhombus, rectangle, ellipse, etc., the principle of which is the same as that in the present application. Meanwhile, when the unit islands 4 are arranged, the distance between two adjacent unit islands 4 is the same in the first direction and the second direction.
  • each display unit 7 includes a unit island 4, a connecting portion 41 connected to the side of the unit island 4, and a hollow area 6 between the unit island 4 and the connecting portion 41, wherein the display units 7 are arrayed
  • the arrangement constitutes the flexible display panel 10 in the embodiment of the present application.
  • each unit island 4 is connected by the connecting portion 41, and when the flexible display panel is stretched or compressed under the action of an external force, the connecting portion 41 will also deform with the action of the external force, to a certain extent Under the tensile force, the connecting portion 41 is deformed, so that the flexible display panel 10 can withstand a large deformation, and finally the expansion and contraction performance of the flexible display panel 10 is improved.
  • connecting portion 41 provided in the embodiment of the present application includes at least three curved portions in the bending direction and at least one straight portion.
  • FIG. 2 is a schematic partial structure diagram of a flexible display panel provided by an embodiment of the present application.
  • the partial structure is mainly a schematic view of the structure in the central display area of the display panel.
  • the first direction is DR1
  • the second direction is DR2
  • the direction perpendicular to the plane of the display panel is DR3.
  • the flexible display panel includes a plurality of unit islands 4 separated from each other and a connecting portion 41 connected with the unit islands 4 . Further, a hollow area 6 is also provided between the connecting portion 41 and the unit island 4 . When the display panel is stretched or compressed by force, the connecting portion 41 is deformed, thereby causing the deformation of the entire display panel.
  • the connecting parts form a "U"-shaped structure, and the "U"-shaped opening can be oriented in the horizontal direction or the vertical direction to adapt to the deformation in different directions.
  • the "U"-shaped opening formed by the connecting portion 41 will expand, thereby realizing the expansion and contraction of the display panel, and since both sides are provided with bending angles in this structure, the flexible panel is further reduced.
  • the problem of stress concentration during deformation effectively reduces the stress problem inside the flexible panel and avoids tearing between the film layers.
  • FIG. 3 is a schematic structural diagram of a display unit provided by an embodiment of the present application.
  • the display unit 7 includes the unit island 4 and the connection portion 41 .
  • the connecting portions 41 are respectively provided on the four side positions of the unit island 4 .
  • the connecting portion 41 can be arranged at the central position of each side and symmetrically distributed to both sides along the central point.
  • the consistency of each display unit 7 is ensured.
  • the display panel further includes a light-emitting unit 42 , and the light-emitting unit 42 is disposed on the unit island 4 .
  • the light emitting unit 42 emits light to form a display screen of the display panel.
  • the light-emitting unit 42 may include a plurality of light-emitting sub-pixels, preferably including red sub-pixels, blue sub-pixels and green sub-pixels. When the sub-pixels are arranged, they can be set according to actual needs, so as to ensure that the flexible display panel has a high light-emitting display effect.
  • a hollow area 6 is set between the adjacent connecting portions 41 and between the connecting portions 41 and the unit island 4.
  • the connecting portion 41 and the unit island 4 will generate deformation, and then deformation in the hollow area 6 to realize the expansion and contraction of the flexible display panel.
  • FIG. 4 is a schematic structural diagram of a display unit provided by an embodiment of the present application.
  • the display unit includes a unit island 4 , a light-emitting unit 42 and a connecting portion 41 .
  • the light-emitting unit 42 is disposed on the unit island 4
  • the connecting portions 41 are respectively connected with the four sides of the unit island 4 .
  • each connecting portion 41 is provided at the center position of the four sides of the unit island 4 as an example for description.
  • each connecting part 41 when the connecting parts 41 are provided, the starting end of each connecting part 41 is set at the center position of each side of the unit island 4 .
  • the four connecting portions 41 on the four sides of the unit island 4 can be regularly distributed relative to the geometric center of the unit island 4. As shown in the structure in FIG.
  • the geometric center of island 4 is obtained by rotating a certain angle.
  • each connecting portion 41 is arranged at the center of the four sides of the unit island 4, when the connecting portion 41 is subjected to a force, it can be ensured that the acting force on each connecting portion 41 is the same. Under the action, the degree of rotation or deformation of each connecting portion 41 can be guaranteed to be the same, and at the same time, the unit island 4 will also rotate under the action of the connecting portion 41. Since the magnitude of the force acting on each side is the same, therefore, The force of the unit island 4 is also more uniform, and the stress generated between the unit island 4 and the connecting portion 41 is also smaller, so that the display panel has better consistency.
  • each connecting portion 41 includes at least three curved portions, ie, a first curved portion 413 , a second curved portion 414 and a third curved portion 415 .
  • each connecting portion 41 further includes at least one straight portion 416 , and a plurality of curved portions and straight portions constitute a complete connecting portion in the embodiment of the present application.
  • the bending directions of the first bending portion 413 , the second bending portion 414 and the third bending portion 415 are different, so as to ensure that the display panel is deformed at multiple angles and achieve better telescopic performance.
  • the first bending portion 413 is the starting end of the connecting portion 41 . That is, one end of the first curved portion 413 is connected to the side of the unit island 4 , the other end of the first curved portion 413 is connected to one end of the second curved portion 414 , and the other end of the second curved portion 414 is connected to the straight portion 416 One end of the straight portion 416 is connected with the third curved portion 415 . Thus, a complete connecting portion 41 is formed.
  • the third curved portion 415 corresponding to the connecting portion 41 on each unit island 4 is connected with the third curved portion 415 on the adjacent unit island 4, so that the plurality of unit islands 4 arranged in the array constitute one overall.
  • the bending radius corresponding to the first curved portion 413 is R2
  • the corresponding bending radius of the second curved portion 414 is R3
  • the bending radius corresponding to the third bending portion 415 is R4.
  • the bending radius R2 of the first bending portion 413 is greater than the bending radius R3 of the second bending portion 414 , that is, the circle corresponding to the inner edge of the first bending portion 413
  • the radius R2 of the arc is greater than the radius R3 of the arc corresponding to the inner edge of the second curved portion 414 , that is, the curvature of the first curved portion 413 is smaller than that of the second curved portion 414 , where R3 and R4 may be the same.
  • the connecting portion 41 is a structural member that is mainly deformed. Therefore, in the embodiment of the present application, when each bending portion is provided, for the first bending portion 413, the first After the curved portion 413 is connected to the side of the unit island 4, the inner edge and the outer edge of the first curved portion 413 are bent toward the outside of the unit island 4 in the bending direction, that is, to ensure that the end of the curved portion of the first curved portion 413 is gradually away from the side of the corresponding cell island 4 .
  • the first bending The angle formed between the center O2 corresponding to the circular arc of the inner edge of the part 413 and the vertical foot point a of the center O2 on the side corresponding to the first curved part 413 and the midpoint b of the circular arc ⁇ aO2b is less than 90°, so that after the second curved portion 414 is connected to the first curved portion 413, the second curved portion 414 is also far away from the side of the corresponding unit island 4.
  • this setting also makes the first curved portion 414 away from the side of the corresponding unit island 4.
  • the end points of the inner edge and the outer edge of the portion 413 are gradually away from the side edge of the unit island 4 , so that the bending direction of the first curved portion 413 is gradually away from the unit island 4 .
  • At least one of the openings on both sides of the first curved portion 413 is oriented away from the side of the unit island 4 . Therefore, it is ensured that each connecting portion will not interfere with the corresponding unit island 4 when deformation occurs, thereby ensuring that the display panel has good telescopic performance.
  • the display panel may further include an adapter portion 4130 , one end of the adapter portion 4130 is connected to the side corresponding to the unit island 4 , and the other end of the adapter portion 4130 is connected to one end of the first curved portion 413 .
  • the connection between the first curved portion 413 and the unit island 4 is made easier by providing the adapter portion 4130, and at the same time, the distance between the first curved portion 413 and the unit island 4 is increased by the provided adapter portion 4130, so that , when a force is applied to the display panel, when the connecting portion 41 is deformed, the connecting portion 41 has a larger space for change, and the structural layout of the internal components of the display panel is also more reasonable.
  • the first curved portion 413 when each curved portion is provided, since the first curved portion 413 is directly connected to the side of the unit island 4 , when the first curved portion 413 is provided, the side corresponds to the first curved portion 413 A rounded corner R1 with a certain angle is set at the connection part of the unit island 4 to prevent tearing with the side edge of the unit island 4 during tension or compression.
  • the size of the fillet R1 can be set according to actual needs. In the embodiment of the present application, the preferred radius R1 of the fillet R1 is 15um.
  • a rounded corner R1 is set between the adapter portion 4130 and the unit island 4.
  • the rest of the adapter portion 4130 can be an arc with a certain bending radius.
  • a shape structure or a straight line structure is used to facilitate connection with the first curved portion 413 .
  • the straight portions 416 of the two adjacent connecting portions 41 can be made perpendicular to each other on their respective extension lines, so as to effectively save the space of the substrate. Layout space and optimize the overall structure of the display panel.
  • a straight portion 416 is provided, and both ends of the straight portion 416 are connected to the second curved portion 414 and the third curved portion 415 respectively.
  • the straight portion 416 The length can be set according to actual needs.
  • the unit island 4 When the display panel is stretched, the unit island 4 will rotate to a certain extent, and at the same time, the connecting portion connected with the unit island 4 will rotate and deform accordingly.
  • the bending part receives the most concentrated tensile or bending stress.
  • the straight part 416 Since the straight part 416 is provided in the embodiment of the present application, the straight part 416 increases the relative length of the connecting part, while the straight part 416 increases the relative length of the connecting part.
  • the portion 416 also makes the transition between the second curved portion 414 and the third curved portion 415 more natural. Therefore, each connecting portion will be deformed to a large extent under the action of a small tensile force, thereby avoiding a large recovery stress between the various components, and effectively reducing the problem of stress concentration inside the display panel.
  • the connecting portion 41 may include a first connecting portion 411 and a second connecting portion 412 .
  • the first connecting portion 411 and the second connecting portion 412 are disposed on two adjacent sides of the same unit island 4 .
  • the shapes of the first connecting portion 411 and the second connecting portion 412 may be the same, and the width W of the same connecting portion may be the same, so that when the first connecting portion 411 is rotated counterclockwise around the geometric center of the unit island 4 by 90°
  • the second connecting portion 412 can be obtained at °.
  • the uniformity of deformation of the retractable flexible panel is ensured.
  • the first connection portion 411 is formed between the second connection portion 412 and the unit island 4 respectively.
  • an interval Z is also formed between the straight portion 416 of the first connecting portion 411 and the first curved portion 413 and the second curved portion 414.
  • the interval Z between the second curved portion 414 of the first connecting portion 411 and the third curved portion 415 of the second connecting portion 412 is the minimum interval.
  • the straight portion can be 416 is as close as possible to each unit island 4, and at this time, the interval Z is guaranteed to be no less than 20um, so as to achieve the processing extreme precision and ensure that there is no problem of mutual interference between the devices, and also optimize the design of the flexible display panel space.
  • the interval Z can be set to 20um.
  • the interval between the second curved portion 414 of the first connecting portion 411 and the third curved portion 415 of the second connecting portion 412 is the minimum interval value , so that each unit island 4 in the display panel and the connection part connected to the unit island 4 occupy a smaller design space, and then more light-emitting display units can be arranged in the display panel, thereby effectively increasing the display panel.
  • the pixel density improves the resolution and display effect of the display panel.
  • the widths of each side of the unit island 4 may be the same, and are set as a. At the same time, a certain width may be reserved at the side edges of the unit island 4, so that the connecting portion 41 can be better connected to the The cell island 4 is connected.
  • the connecting portions 41 on the opposite sides of the same unit island 4 may be symmetrically arranged with respect to the geometric center of the unit island 4 .
  • the connecting portions 41 on adjacent two sides can be obtained by rotating a certain angle, and the angle is between 0° and 180°, and the adjacent connecting portions 41 are not in contact with each other.
  • FIG. 5 is a schematic structural diagram of a corresponding connection portion in a common connection area provided by an embodiment of the present application.
  • Two adjacent unit islands are connected by corresponding connecting portions, and after the two connecting portions are connected, a whole and a common area 5 are formed, as shown in the structure in FIG. 5 .
  • the connection part 41 further includes a third connection part 511 and a fourth connection part 512 .
  • the third connection part 511 and the fourth connection part 512 are respectively connected to different unit islands and then connected at the common area 5 .
  • the connecting portion 41 is axially symmetrical along the center line O.
  • the two connection parts form a whole, and the integral connection part mainly includes a first deformation area 501, a second deformation area 502 and a third deformation area 503, wherein the first deformation area 501 is the third connection
  • the second bending part on the part 511, the second deformation zone 502 is composed of the third bending part on the third connecting part 511 and the third bending part on the fourth connecting part 512, and the third deformation zone 503 mainly corresponds to the fourth The second curved portion on the connecting portion 512 . Therefore, when the flexible panel is deformed, the main deformation parts also occur in the first deformation area 501 , the second deformation area 502 and the third deformation area 503 .
  • the connecting portion or the bending portion corresponding to the region 503 can be set to be at least larger than a semicircular structure, as shown by the starting line and the ending line of the arc corresponding to each deformation region in FIG. 5 . Therefore, when subjected to force, the connecting portion provided by the embodiments of the present application is more likely to be deformed, thereby ensuring that the flexible panel has good telescopic performance.
  • the third connecting portion 511 and the fourth connecting portion 512 are subjected to stress, such as tensile stress, in the embodiment of the present application, since the third connecting portion 511 and the fourth connecting portion 512 are provided with a plurality of curved portions, and The corresponding connecting parts 41 in the first deformation zone 501, the second deformation zone 502 and the third deformation zone 503 are set to be at least larger than a semicircular structure, so the transition between different deformation zones will be smoother.
  • the first deformation zone 501 and the third deformation zone 503 are deformed, the deformation occurs when a small force is applied.
  • the transition between the deformation zones is smoother and more natural, the bending stress generated in the connecting portion 41 Also smaller, and less stress concentration issues inside the display panel.
  • an adapter portion 4130 may be provided, and the connection between the first curved portion 413 and the unit island 4 is made easier by providing the adapter portion 4130 .
  • part 4130 which increases the distance between the first bending part 413 and the unit island 4, that is, the bending angles of the first deformation area 501, the second deformation area 502 and the third deformation area 503 are larger.
  • the two straight parts on the third connection part 511 and the fourth connection part 512 can be parallel to each other, thereby effectively saving the layout space of the connection parts.
  • FIG. 6 is a schematic structural diagram of the retractable flexible panel provided by an embodiment of the present application before being stretched by force. Before stretching, since the flexible panel is not affected by force everywhere, the unit islands 4 arranged in an array on the base substrate and the connecting parts 41 connected to the unit islands 4 are kept in a stable state without deformation.
  • the flexible display panel can also display normally.
  • FIG. 7 is a schematic structural diagram of the retractable flexible panel provided by an embodiment of the present application after deformation.
  • the external force shown can be along any direction around the flexible panel, and arrows in different directions in FIG. 6 represent tensile forces in different directions.
  • the side length of the flexible panel is L, and as the tension increases, the side length of the flexible panel becomes L0.
  • the magnitude of the force on the four sides of the flexible panel is the same and the force positions are mutually Symmetric, therefore, after deformation, the four sides of the flexible panel increase L0, and the length of the four sides of the flexible panel at this time is L+L0.
  • the unit island 4 will rotate by a certain angle under the traction of the connecting portion 41 .
  • the connecting portion 41 will be stretched. Since the connecting portion 41 is provided with a curved portion, the curved portion will be deformed to a certain extent, so that the connecting portion 41 will be deformed, as shown in the common connection in FIG. 7 .
  • the deformed structure of the connecting portion 41 in the region 71 is shown.
  • the adjacent unit islands 4 are all connected through the connecting portion 41 , specifically, they can be connected to each other through the third curved portion of the corresponding connecting portion 41 . Therefore, every four unit islands 4 form a deforming unit 70, and the connecting portion 41 in the deforming unit 70 is deformed, so that the gap at the center of the deforming unit 70 becomes larger, and the area of the flexible panel becomes larger.
  • the connecting portion 41 since the connecting portion 41 includes a plurality of curved portions and straight portions, when deformed, the curved portion is more easily deformed, and the deformation effect is good, and the deformation angle and range of each curved portion are larger, and can be A certain deformation occurs in the direction, thereby effectively improving the deformation performance of the retractable flexible panel.
  • the stretching when not less than 5%, the display panel can still emit light and display normally, and the reliability of the panel high.
  • FIG. 8 is a schematic diagram of an arrangement structure of signal lines according to an embodiment of the present application. Since the light-emitting unit 81 is disposed on the unit island 4 , at the same time, the light-emitting unit 81 includes a plurality of light-emitting sub-pixels, and the sub-pixels include red sub-pixels 802 , green sub-pixels 803 and blue sub-pixels 804 .
  • the red sub-pixels 802 and the green sub-pixels 803 can be arranged in the same direction, and the direction can be parallel to the side of the unit island 4, and then the blue sub-pixels 804 are arranged.
  • the direction of the blue sub-pixel 804 is also parallel to the side direction of the unit island 4 , and the area of the blue sub-pixel 804 is larger than that of the red sub-pixel 802 and the green sub-pixel 803 .
  • the specific structure is shown in the arrangement in FIG. 8 , the arrangement shape of the blue sub-pixels 804 , the red sub-pixels 802 and the green sub-pixels 803 is the same as that of each unit island 4 .
  • the red sub-pixel, the blue sub-pixel and the green sub-pixel form a diamond shape, and an interval is set between two adjacent sub-pixels, And the direction of the diagonal of the rhombus surrounded by the red sub-pixels, the blue sub-pixels and the green sub-pixels is the same as the direction of the diagonal of the rhombus formed by the cell islands.
  • the rhombus structure is the same as or similar to the rhombus structure formed by the unit island.
  • FIG. 9 is a schematic diagram of an arrangement structure of sub-pixels in an embodiment of the present application.
  • the red sub-pixel 802 and the green sub-pixel 803 can be arranged in a square structure, and the blue sub-pixel 804 can be arranged in a rectangular structure, but the present invention is not limited to this;
  • the red sub-pixels 802, the green sub-pixels 803, and the blue sub-pixels 804 in pictures c, d, and e can all be arranged in a square structure, and can be arranged alternately with each other, wherein the blue sub-pixels 804 can be mirrored Arranged in a manner, the first blue sub-pixel B-1 and the second blue sub-pixel B-2 may emit blue light of different wavelengths, and the arrangement may have mirror symmetry.
  • the pixel density of the light-emitting unit 81 is not less than 60 PPI, and the light-emitting unit 81 can still emit light and display normally under the condition that the stretching elongation in any direction of the display panel is not less than 5%, and The brightness remains the same and the glow is good.
  • first signal line 811 is also provided on the first connection part 411
  • second signal line 812 is also provided on the second connection part 412, wherein the wiring of the first signal line 811 and the second signal line 812
  • the direction may be the same as the bending direction of the connection portion, and the signal lines in the same connection portion may be arranged at equal intervals, and the widths of the respective signal lines may be the same.
  • Both the first signal line 811 and the second signal line 812 are electrically connected to the light emitting unit 81 to provide driving signals.
  • each connection portion may be symmetrically arranged along the midpoint of the side.
  • each signal line may include a signal transmission line, a gate transmission line, a voltage driving line, etc., and the implementation of the present application
  • the signal lines in the example are of a laminated structure to reduce the space occupied by the lines.
  • FIG. 10 is a schematic cross-sectional view of the connection portion and the signal line along the Y1 - Y2 direction according to an embodiment of the present application. It includes a base substrate 10 , a first encapsulation layer 11 , a planarization layer 12 , a second encapsulation layer 13 , a support layer 14 and a third encapsulation layer 15 , which are arranged in order from bottom to top.
  • the first signal line 16 the first signal line 16 is disposed in the planarization layer 12, and the planarization layer 12 completely covers the plurality of first signal lines 16, through the first encapsulation layer 11 and the second encapsulation layer 13.
  • a signal line 16 is fixed and encapsulated up and down to prevent the first signal line 16 from being displaced during the bending process, resulting in failure.
  • the first signal lines 16 may be arranged in parallel at equal intervals, and the width of each signal line may be the same.
  • the material of the base substrate 10 may be a polyimide material.
  • FIG. 11 is a schematic cross-sectional view of the connecting portion and the signal line along the X1 - X2 direction according to the embodiment of the present application. Specifically, it includes a base substrate 10 , a first encapsulation layer 11 , a planarization layer 12 , a second encapsulation layer 13 , a support layer 14 and a third encapsulation layer 15 , which are arranged in order from bottom to top.
  • the second signal lines 17 are disposed in the planarization layer 12 , and the planarization layer 12 completely covers the plurality of second signal lines 17 .
  • the embodiment of the present application further provides a display device, the display device includes the display panel provided in the embodiment of the present application, the display panel is a retractable flexible display panel, the display device can achieve a pixel density of not less than 70.5PPI, When the tensile elongation in any direction is not less than 5%, it can continuously stretch and deform in any direction in space, and when stretching, it can realize display under the action of a small tensile stress. The deformation of the panel, at the same time, the stress distribution inside the display panel is more uniform, and the problem of stress concentration is smaller.
  • the driving voltage wiring layer of the main unit of the pixel display does not have failures such as breakage, the display device has better scalability and high display quality.
  • a display panel and a display device provided by the embodiments of the present application have been described in detail above, and the principles and implementations of the present application are described with specific examples. The descriptions of the above embodiments are only used to help understand the present application. Those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements, and The essence of the corresponding technical solutions is not deviated from the scope of the technical solutions of the embodiments of the present application.

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Abstract

一种显示面板（10）及显示装置，显示面板（10）包括单元岛（4）、连接部（41）、发光单元（81）以及信号线，连接部（41）与单元岛（4）的每个侧边连接，每个连接部（41）包括设置在至少三个弯曲方向上的弯曲部（413、414、415）以及至少一个平直部（416），显示面板（10）更容易发生形变并且形变效果更好，同时，各器件间不会相互干涉，有效的提高了面板伸缩性能以及可靠性。

Description

显示面板及显示装置 技术领域
本申请涉及显示面板技术领域，尤其涉及一种显示面板及显示装置。
 背景技术
近年来，随着显示技术的不断发展，柔性显示屏由于能适应不同的使用环境，而被应用于各种领域中。
柔性显示面板具有可弯曲或折叠的特点，在柔性显示面板中，相比可折叠型、可卷曲型显示屏等其他类型的柔性显示面板，可伸缩式柔性显示屏具有更加轻薄、功耗更低以及力学性能可调控等优点，并且还可实现在任意方向上拉伸依然保持良好的显示效果。因此，可伸缩式柔性显示面板越来越被人们重视。但是，现有的可伸缩式柔性显示屏中，还存在着许多技术问题以及结构缺陷。当前可伸缩式柔性显示屏的设计难题主要在于模组在达到一定的显示像素密度的前提下，显示集成单元结构与电压传输线结构之间会出现相互干扰的情况，整体模组的力学特性不理想，在被拉伸或者压缩的情况下，显示屏内的显示器件层、电压传输层容易出现永久性的断裂，以及柔性显示面板的可伸缩次数不理想等问题。
因此需要对现有技术中的问题提出解决方法。
 技术问题
综上所述，现有的可伸缩式柔性显示面板中，存在着当显示面板模组内的显示像素密度达到一定程度时，显示集成单元结构与电压传输线结构之间会出现相互干扰的情况，并且柔性显示面板的整体模组的力学性能不理想，在被拉伸或者压缩的情况下，显示屏内的显示器件层、电压传输层容易出现永久性的断裂，以及柔性显示面板的可伸缩次数不理想等问题，不利于可伸缩式柔性显示面板综合性能的提高。
 技术解决方案
为解决上述问题，本申请实施例提供一种显示面板及显示装置，以解决现有的柔性显示面板在弯曲、折叠、拉伸或者压缩时，显示面板内显示集成单元与电压传输单元之间容易出现相互干扰的问题，以及柔性面板的线路层或器件层容易出现永久性断裂、可伸缩次数少以及伸缩效果不理想等问题，并提高柔性显示面板的综合性能。
本申请实施例提供一种显示面板及显示装置，以提高可伸缩式柔性显示面板的质量以及综合性能。
为解决上述技术问题，本申请实施例提供的技术方案如下：
本申请实施例的第一方面，提供了一种显示面板，所述显示面板包括：
衬底基板；
多个单元岛，所述单元岛在所述衬底基板的第一方向上和第二方向上呈阵列排布，且所述单元岛彼此相互分离；
多个连接部，所述连接部将相邻的所述单元岛彼此连接；
发光单元，所述发光单元设置在所述单元岛上，且所述发光单元还包括多个发光子像素；以及
信号线，所述信号线设置在所述连接部上并电连接所述发光单元；
其中，每个所述连接部与对应的所述单元岛的每个侧边相连接，所述连接部的起始端设置在所述单元岛的每个所述侧边的中心位置处，且每个所述连接部包括设置在至少三个弯曲方向上的弯曲部以及至少一个平直部；
所述显示面板还包括位于所述单元岛和所述连接部之间的镂空区域。
根据本申请一实施例，其中所述弯曲部包括第一弯曲部、第二弯曲部以及第三弯曲部；
所述第一弯曲部与所述单元岛的侧边相连接，所述第二弯曲部与所述第一弯曲部的一端相连接，所述平直部的一端与所述第二弯曲部的一端相连接，且所述平直部的另一端与所述第三弯曲部的一端相连接。
根据本申请一实施例，其中所述连接部包括第一连接部和第二连接部；
所述第一连接部和所述第二连接部分别设置在所述单元岛两相邻的侧边上，且所述第一连接部的所述第三弯曲部与所述第二连接部的所述第二弯曲部之间的距离小于所述第一连接部的所述平直部与所述第一连接部的所述第一弯曲部或所述第二弯曲部之间的距离。
根据本申请一实施例，其中所述第一弯曲部的内边缘圆弧对应的圆心与所述圆心在所述第一弯曲部对应的侧边上的垂足点和所述圆弧的中点之间形成的夹角小于90°。
根据本申请一实施例，其中所述第一弯曲部的所述内边缘对应的圆弧的半径大于所述第二弯曲部的内边缘对应的圆弧的半径。
根据本申请一实施例，其中相邻的所述单元岛之间通过所述第三弯曲部相互连接。
根据本申请一实施例，其中所述连接部还包括转接部，所述转接部的一端与所述单元岛的侧边连接，所述转接部的另一端与所述第一弯曲部的一端连接，且所述转接部的一端与所述单元岛的所述侧边设置有圆角。
根据本申请一实施例，其中所述单元岛相对的两条侧边上的所述连接部相对所述单元岛的几何中心呈中心对称设置。
根据本申请实施例的第二方面，还提供一种显示面板，所述显示面板包括：
衬底基板；
多个单元岛，所述单元岛在所述衬底基板的第一方向上和第二方向上呈阵列排布，且所述单元岛彼此相互分离；
多个连接部，所述连接部将相邻的所述单元岛彼此连接；
发光单元，所述发光单元设置在所述单元岛上；以及
信号线，所述信号线设置在所述连接部上并电连接所述发光单元；
其中，每个所述连接部与对应的所述单元岛的每个侧边相连接，所述连接部的起始端设置在所述单元岛的每个所述侧边的中心位置处，且每个所述连接部包括设置在至少三个弯曲方向上的弯曲部以及至少一个平直部。
根据本申请一实施例，其中所述弯曲部包括第一弯曲部、第二弯曲部以及第三弯曲部；
所述第一弯曲部与所述单元岛的侧边相连接，所述第二弯曲部与所述第一弯曲部的一端相连接，所述平直部的一端与所述第二弯曲部的一端相连接，且所述平直部的另一端与所述第三弯曲部的一端相连接。
根据本申请一实施例，其中所述连接部包括第一连接部和第二连接部；
所述第一连接部和所述第二连接部分别设置在所述单元岛两相邻的侧边上，且所述第一连接部的所述第三弯曲部与所述第二连接部的所述第二弯曲部之间的距离小于所述第一连接部的所述平直部与所述第一连接部的所述第一弯曲部或所述第二弯曲部之间的距离。
根据本申请一实施例，其中所述第一弯曲部的内边缘圆弧对应的圆心与所述圆心在所述第一弯曲部对应的侧边上的垂足点和所述圆弧的中点之间形成的夹角小于90°。
根据本申请一实施例，其中所述第一弯曲部的所述内边缘对应的圆弧的半径大于所述第二弯曲部的内边缘对应的圆弧的半径。
根据本申请一实施例，其中相邻的所述单元岛之间通过所述第三弯曲部相互连接。
根据本申请一实施例，其中所述显示面板还包括位于所述单元岛和所述连接部之间的镂空区域，所述镂空区域采用弹性有机层进行填充。
根据本申请一实施例，其中所述连接部还包括转接部，所述转接部的一端与所述单元岛的侧边连接，所述转接部的另一端与所述第一弯曲部的一端连接，且所述转接部的一端与所述单元岛的所述侧边设置有圆角。
根据本申请一实施例，其中所述单元岛相对的两条侧边上的所述连接部相对所述单元岛的几何中心呈中心对称设置。
根据本申请一实施例，其中所述连接部的所述弯曲部的宽度与所述连接部的所述平直部的宽度相同。
根据本申请一实施例，其中所述发光单元包括多个发光子像素，所述发光子像素包括红色子像素、蓝色子像素以及绿色子像素，所述蓝色子像素对应的发光区域的面积大于所述红色子像素对应的发光区域的面积，且所述蓝色子像素对应的发光区域的面积大于所述绿色子像素对应的发光区域的面积，且所述蓝色子像素、所述红色子像素和所述绿色子像素的排布形状与每个所述单元岛的排布形状相同。
根据本申请实施例的第三方面，还提供一种显示装置，所述显示装置包括本申请中提供的显示面板，所述显示面板包括：
衬底基板；
多个单元岛，所述单元岛在所述衬底基板的第一方向上和第二方向上呈阵列排布，且所述单元岛彼此相互分离；
多个连接部，所述连接部将相邻的所述单元岛彼此连接；
发光单元，所述发光单元设置在所述单元岛上；以及
信号线，所述信号线设置在所述连接部上并电连接所述发光单元；
其中，每个所述连接部与对应的所述单元岛的每个侧边相连接，所述连接部的起始端设置在所述单元岛的每个所述侧边的中心位置处，且每个所述连接部包括设置在至少三个弯曲方向上的弯曲部以及至少一个平直部。
 有益效果
综上所述，本申请实施例的有益效果为：
本申请实施例提供一种显示面板及显示装置，通过在显示面板的衬底基板上设置阵列排布的单元岛，并且在单元岛的每个侧边上设置相应的连接部，且连接部与单元岛之间镂空。本申请实施例提供的连接部上包括多个弯曲部以及至少一平直部。由于连接部上设置有多段弯曲部，在对柔性显示面板进行拉伸或者压缩时，弯曲部更容易被拉伸，从而使得显示面板更容易发生形变并且形变效果更好，同时，单元岛与连接部上的信号线之间不会出现相互干涉的情况，有效的提高了可伸缩式柔性显示面板的伸缩性能并提高了柔性显示面板的显示质量和可靠性。
 附图说明
图1为本申请实施例提供的柔性显示面板的平面结构示意图；
图2为本申请实施例提供的柔性显示面板的局部结构示意图；
图3为本申请实施例提供的显示单元的结构示意图；
图4为本申请实施例提供的显示单元的结构示意图；
图5为本申请实施例提供的公共连接区域内对应的连接部的结构示意图；
图6为本申请实施例提供的可伸缩式柔性面板受力拉伸前的结构示意图；
图7为本申请实施例提供的可伸缩式柔性面板变形后的结构示意图；
图8为本申请实施例提供的信号线的排布结构示意图；
图9为本申请实施例中子像素的排布结构示意图；
图10为本申请实施例提供的连接部及信号线沿Y1-Y2方向的剖面示意图；
图11为本申请实施例提供的连接部及信号线沿X1-X2方向上的剖面示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本申请可用以实施的特定实施例。
本申请实施例提供的显示面板为可伸缩式柔性显示面板，所述可伸缩式柔性显示面板在被外力拉伸或者压缩时，模组内部的显示器件层以及电路器件层不会出现断裂以及失效，并且本申请实施例提供的柔性显示面板的力学性能良好，可伸缩次数高，同时还具有良好的显示效果。
如图1所示，图1为本申请实施例提供的柔性显示面板的平面结构示意图。柔性显示面板10包括衬底基板1以及设置在衬底基板1上的走线区3。柔性显示面板10的走线区3可设置在衬底基板1的一侧，以减小走线区3对显示质量的影响。在一实施例中，柔性显示面板10的走线区3可设置在衬底基板1的两侧靠近边缘位置处，以减小走线区3对显示质量的影响。
同时，柔性显示面板10还包括中心显示区2。发光单元以及像素单元设置在所述中心显示区2内。具体的，在本申请实施例中，通过对中心显示区2内的发光单元进行设计，以提高柔性显示面板10的可伸缩性能以及显示质量。
优选的，在中心显示区2内还包括单元岛4以及连接部41。多个单元岛4呈阵列的设置在显示面板的中心显示区2内，单元岛4可为显示面板上的显示发光单元，每个显示发光单元对应一个单元岛4。具体的，单元岛4在衬底基板1的第一方向上和第二方向上可阵列地排布，第一方向与第二方向可相互垂直或者呈一定的角度，优选的，第一方向与衬底基板1的宽度方向相同，第二方向与衬底基板1的长度方向相同。
在排布单元岛4时，各个单元岛4之间彼此相互分离，即相邻的单元岛4之间不接触，而通过连接部41进行连接，连接部41与单元岛4之间为镂空区域6。在一实施例中，在镂空区域6内采用弹性有机层填充，且贯穿整个显示功能层。
在设置连接部41时，连接部41对应的设置在每个单元岛4的侧边位置处，本申请实施例中，单元岛4以正方形为例进行说明，所述正方形与水平方向呈45°的方向进行设置。单元岛4还可为菱形、矩形、椭圆形等其他形状，其原理与本申请中的原理相同。同时，在设置单元岛4时，在第一方向和第二方向上，相邻的两个单元岛4之间的间距相同。
连接部41的起始端设置在单元岛4的四个不同的侧边上，同时，每个单元岛4的连接部41对应地与其四周相邻的单元岛4的连接部41连接，如图1中的公共连接区域5所示。通过公共连接区域5将相邻的连接部41进行连接，从而形成一个整体。多个显示单元7，每个显示单元7包括单元岛4、与单元岛4侧边相连接的连接部41，以及单元岛4和连接部41之间的镂空区域6，其中，显示单元7阵列排布构成本申请实施例中的柔性显示面板10。
在本申请实施例中，各单元岛4通过连接部41进行连接，而当柔性显示面板在外力作用下拉伸或者压缩时，连接部41也会随着外力的作用而发生变形，在一定程度的拉力下，连接部41发生形变，从而使得柔性显示面板10能承受较大的变形，并最终提高柔性显示面板10的伸缩性能。
进一步的，本申请实施例提供的连接部41包括至少三个弯曲方向上的弯曲部以及至少一个平直部。
如图2所示，图2为本申请实施例提供的柔性显示面板的局部结构示意图。所述局部结构主要为显示面板中心显示区内的结构示意图。本申请实施例中，第一方向为DR1，第二方向为DR2，以及与显示面板的平面相垂直的方向为DR3。
具体的，柔性显示面板包括多个彼此相互分离的单元岛4以及与单元岛4相连接的连接部41。进一步的，连接部41与单元岛4之间还设置有镂空区域6。当显示面板受力被拉伸或者压缩时，连接部41发生形变，从而引起整个显示面板的变形。
同时，对于两相邻的连接部41而言，其连接部位形成“U”形结构，所述“U”形的开口可朝向水平方向或者竖直方向，以适应不同方向上的形变。当被拉伸时，连接部41形成的“U”形的开口会扩大，从而实现了显示面板的伸缩，并且，由于在该结构中两侧均设置有弯曲角度，还进一步的降低了柔性面板在变形时的应力集中的问题，有效地减小了柔性面板内部的应力问题，避免了膜层之间的撕裂。
如图3所示，图3为本申请实施例提供的显示单元的结构示意图。显示单元7包括单元岛4以及连接部41。连接部41分别设置在单元岛4的四个侧边位置上。优选的，在设置每个侧边对应的连接部41时，连接部41可设置在每个侧边的中心位置处，并沿该中心点向两侧对称分布。从而保证了每个显示单元7的一致性。
本申请实施例中，显示面板还包括发光单元42，发光单元42设置在单元岛4上。发光单元42发光从而形成显示面板的显示画面。发光单元42可包括多个发光子像素，优选的包括红色子像素、蓝色子像素以及绿色子像素。各个子像素在排布时，可根据实际需要进行设置，从而保证柔性显示面板具有较高的发光显示效果。
进一步的，在本申请实施例中，相邻的连接部41之间以及连接部41与单元岛4之间设置为镂空区域6，当各部件受力作用时，连接部41以及单元岛4产生形变，进而在镂空区域6内变形，实现柔性显示面板的伸缩。
如图4所示，图4为本申请实施例提供的显示单元的结构示意图。显示单元包括单元岛4、发光单元42以及连接部41。具体的，发光单元42设置在单元岛4上，连接部41分别与单元岛4的四条侧边相连接。本申请实施例中，每个连接部41均设置在单元岛4的四条侧边的中心位置处为例进行说明。
优选的，本申请实施例中，在设置连接部41时，每个连接部41的起始端均设置在单元岛4的每条侧边的中心位置处。这样，单元岛4的四条侧边上的四个连接部41可相对单元岛4的几何中心呈规律性分布，如图4中结构所示，相邻的两连接部41之间可沿着单元岛4的几何中心旋转一定的角度而得到。
由于每个连接部41均设置在单元岛4的四条侧边的中心位置处，当连接部41受力的作用时，可保证每个连接部41所承受的作用力相同，在相同的力的作用下，可保证各个连接部41的转动程度或变形程度相同，同时，单元岛4在连接部41的作用下也会出现转动，由于作用在各个侧边上的力的大小均相同，因此，单元岛4的受力也更均匀，在单元岛4与连接部41之间产生的应力也更小，使得显示面板具有更好的一致性。
优选的，在本申请实施例中，每个连接部41包括至少三个弯曲部，即第一弯曲部413、第二弯曲部414以及第三弯曲部415。除此外，每个连接部41还包括至少一个平直部416，多个弯曲部与平直部构成本申请实施例中完整的连接部。且第一弯曲部413、第二弯曲部414以及第三弯曲部415的弯曲方向不同，从而保证显示面板在多个角度发生变形，实现较好的伸缩性能。
具体的，第一弯曲部413为连接部41的起始端。即第一弯曲部413一端与单元岛4的侧边相连接，同时第一弯曲部413的另一端与第二弯曲部414的一端相连接，第二弯曲部414的另一端与平直部416的一端相连接，以及，平直部416的另一端与第三弯曲部415相连接。从而构成一个完整的连接部41。
进一步的，每个单元岛4上的连接部41对应的第三弯曲部415均与相邻的单元岛4上的第三弯曲部415相连接，从而将阵列设置的多个单元岛4构成一个整体。
同时，在设置第一弯曲部413时，第一弯曲部413对应的弯曲半径为R2，在设置第二弯曲部414时，第二弯曲部414对应的弯曲半径为R3，在设置第三弯曲部415时，第三弯曲部415对应的弯曲半径为R4。为了保证可伸缩式柔性显示面板的伸缩性能，本申请实施例中，第一弯曲部413的弯曲半径R2大于第二弯曲部414的弯曲半径R3，即第一弯曲部413的内边缘对应的圆弧的半径R2大于第二弯曲部414的内边缘对应的圆弧的半径R3，即第一弯曲部413的弯曲曲率小于第二弯曲部414的弯曲曲率，其中R3与R4的大小可相同。
优选的，本申请实施例中，各弯曲半径R3=R4=20um，R2的大小可根据实际需要进行设置。
进一步的，当柔性显示面板在被拉伸或者压缩时，连接部41为主要发生形变的结构件，因此，本申请实施例中，在设置各个弯曲部时，对于第一弯曲部413，第一弯曲部413与单元岛4的侧边连接后，使第一弯曲部413的内边缘和外边缘的弯曲方向朝向单元岛4的外部进行弯曲，即保证第一弯曲部413的弯曲部位的末端逐渐远离对应的单元岛4的侧边。
具体的，如图4中所示，为了使单元岛4以及连接部41在受力后更易进行弯曲，不出现相邻的连接部41相互干涉的情况，在本申请实施例中，第一弯曲部413的内边缘圆弧对应的圆心O2与所述圆心O 2在所述第一弯曲部413对应的侧边上的垂足点a和所述圆弧的中点b之间形成的夹角∠aO2b小于90°，这样可使得第二弯曲部414在与第一弯曲部413连接后，第二弯曲部414也远离相对应的单元岛4的侧边，同时，这样设置也使得第一弯曲部413的内边缘和外边缘的终点逐渐远离单元岛4的侧边，使第一弯曲部413的弯曲方向逐渐远离单元岛4。使第一弯曲部413的两侧的开口至少有一侧的开口的朝向方向偏离单元岛4的侧边。从而保证了每个连接部在发生变形时，不会与对应的单元岛4之间形成相互干涉，从而保证显示面板具有较好的伸缩性能。
进一步的，本申请实施例中，显示面板还可包括转接部4130，转接部4130的一端与单元岛4对应的侧边连接，转接部4130的另一端与第一弯曲部413的一端连接，通过设置转接部4130使第一弯曲部413与单元岛4的连接更加容易，同时，通过设置的转接部4130，增加了第一弯曲部413与单元岛4之间的距离，这样，在对显示面板施加作用力时，当连接部41在发生变形时，连接部41具有更大的变化空间，显示面板内部器件的结构布局也更加合理。
本申请实施例中，在设置各个弯曲部时，由于第一弯曲部413直接与单元岛4的侧边相连接，因此在设置第一弯曲部413时，在侧边与第一弯曲部413对应的连接部位处设置一定角度的圆角R1，以防止在拉伸或者压缩时，与单元岛4的侧边撕裂。圆角R1的大小可根据实际需要进行设置，本申请实施例中，优选的圆角R1的半径R1=15um。
具体的，在设置转接部4130时，转接部4130与单元岛4之间设置圆角R1，圆角R1设置完成后，其中，转接部4130的其余部分可为具有一定弯曲半径的弧形结构或者直线结构，以便于同第一弯曲部413进行连接。
优选的，在本申请实施例中，在设置第二弯曲部414和平直部416时，由于第二弯曲部414直接与平直部416连接，连接后，保证平直部416的延伸方向正好与显示面板的第一方向DR1或者第二方向DR2相同，优选的，可使相邻的两个连接部41的平直部416在各自的延长线上相互垂直，从而可有效地节省衬底基板的布局空间，并优化显示面板的整体结构。
进一步的，本申请实施例中设置有平直部416，平直部416的两端分别与第二弯曲部414和第三弯曲部415相连接，在设置平直部416时，平直部416的长度可根据实际需要进行设置。
当显示面板被拉伸时，单元岛4会发生一定程度的转动，同时与单元岛4相连的连接部会随之转动并发生变形。当各连接部在受力变形时，弯曲部位受到的拉伸或者弯曲应力最为集中，由于本申请实施例中设置有平直部416，平直部416使得连接部的相对长度增加，同时平直部416还使得第二弯曲部414和第三弯曲部415之间的过渡更自然。因此，各连接部在受到较小的拉力作用下便会出现较大程度的变形，从而避免了各部件之间出现较大的恢复应力，有效的减小了显示面板内部的应力集中的问题。
本申请实施例中，连接部41可包括第一连接部411和第二连接部412。其中，第一连接部411和第二连接部412设置在同一个单元岛4的两相邻的侧边上。优选的，第一连接部411和第二连接部412的形状可相同，并且同一个连接部的宽度W可相同，这样，当第一连接部411绕着单元岛4的几何中心逆时针旋转90°时可得到第二连接部412。从而保证了可伸缩式柔性面板变形的均匀性。
进一步的，阵列排布的单元岛4与对应的连接部41连接后，以第一连接部411为例，第一连接部411会分别与第二连接部412以及单元岛4之间均会形成间隔Z，同时，第一连接部411的平直部416与第一弯曲部413和第二弯曲部414之间也会形成间隔Z，本申请实施例中，为了防止各结构件之间出现相互干涉的问题，第一连接部411的第二弯曲部414与第二连接部412的第三弯曲部415之间的间隔Z为最小间隔，当该间隔Z的值最小时，可使得平直部416尽可能的靠近每个单元岛4，此时保证该间隔Z不小于20um，从而可实现加工极值精度并保证各器件之间不出现相互干涉的问题，同时还优化了柔性显示面板的设计空间。优选的，本申请实施例中，间隔Z可设置为20um，此时，第一连接部411的第二弯曲部414与第二连接部412的第三弯曲部415之间的间隔为最小间隔值，使得显示面板内的每个单元岛4以及与单元岛4相连的连接部占据更小的设计空间，进而可在显示面板内设置更多的发光显示单元，从而有效的增大了显示面板的像素密度，提高了显示面板的分辨率以及显示效果。
在本申请实施例中，单元岛4的各侧边的宽度可相同，均设置为a，同时，可在单元岛4的侧边缘附件预留一定的宽度，以使连接部41更好的与单元岛4进行连接。
进一步的，在本申请实施例中，同一个单元岛4的相对的两侧边上的连接部41相对于该单元岛4的几何中心可呈中心对称设置，优选的，同一个单元岛4的相邻的两侧边上的连接部41可通过旋转一定的角度而得到，所述角度在0°~180°之间，并且相邻的连接部41彼此不接触。
如图5所示，图5为本申请实施例提供的公共连接区域内对应的连接部的结构示意图。相邻的两个单元岛通过对应的连接部进行连接，两连接部连接后会形成一整体以及一公共区域5，如图5中的结构所示。连接部41还包括第三连接部511以及第四连接部512，第三连接部511和第四连接部512分别与不同的单元岛相连接，然后再在公共区域5处连接。
在本申请实施例中，连接部41沿着中心线O呈轴对称。连接后，两连接部形成一个整体，对于该整体连接部而言，主要包括有第一变形区501、第二变形区502以及第三变形区503，其中，第一变形区501为第三连接部511上的第二弯曲部，第二变形区502为第三连接部511上的第三弯曲部和第四连接部512上的第三弯曲部共同构成，第三变形区503主要对应第四连接部512上的第二弯曲部。因此，当柔性面板发生变形时，主要的变形部位也发生在第一变形区501、第二变形区502以及第三变形区503内。
在本申请实施例中，由于第一变形区501、第二变形区502以及第三变形区503的弯曲角度较大，在设置时，第一变形区501、第二变形区502以及第三变形区503对应的连接部或弯曲部可设置成至少大于一个半圆形的结构，如图5中各变形区对应的弧度起始线以及终止线所示。因此，在受力时，本申请实施例提供的连接部更容易发生形变，从而保证柔性面板具有良好的伸缩性能。
当第三连接部511和第四连接部512受到应力作用时，如拉应力作用，本申请实施例中，由于在第三连接部511和第四连接部512上设置有多个弯曲部，并且将第一变形区501、第二变形区502以及第三变形区503内对应的连接部41设置为至少大于一个半圆形的结构，因此，不同的变形区之间的过渡会更平滑，当第一变形区501和第三变形区503发生变形时，施加较小的作用力就会出现形变，同时，由于各变形区之间的过渡更平滑自然，因此，连接部41内产生的弯曲应力也更小，显示面板内部的应力集中问题也更小。
同时，结合图4中的结构，本申请实施例中还可设置转接部4130，通过设置转接部4130使第一弯曲部413与单元岛4的连接更加容易，同时，通过设置的转接部4130，增加了第一弯曲部413与单元岛4之间的距离，即使得第一变形区501、第二变形区502以及第三变形区503的弯曲角度较大，这样，在对显示面板施加作用力时，当连接部41在发生变形时，连接部41具有更大的变化空间，显示面板内部器件的结构布局也更加合理。
同时，在本申请实施例中，连接后，第三连接部511和第四连接部512上的两平直部可相互平行，从而有效的节省了连接部的布局空间。
如图6所示，图6为本申请实施例提供的可伸缩式柔性面板受力拉伸前的结构示意图。在拉伸前，由于柔性面板各处不受力的作用，因此，衬底基板上阵列排布的单元岛4以及与单元岛4相连的连接部41均保持稳定状态而不发生变形，此时柔性显示面板也可正常显示。
如图7所示，图7为本申请实施例提供的可伸缩式柔性面板变形后的结构示意图。结合图6中的受力图示，当柔性面板受到外力作用时，所示外力可沿着柔性面板四周任何方向，图6中的不同朝向的箭头代表不同方向上的拉力。在拉伸前，柔性面板的边长为L，随着拉力不断增大，柔性面板的边长变成L0，本申请实施例中，柔性面板四边上受的力的大小相同且受力位置相互对称，因此，在变形后，柔性面板四边均增大L0，此时柔性面板的四边长为L+L0。
进一步的，在拉伸过程中，单元岛4会在连接部41的牵引下，旋转一定的角度。同时，在外力的作用下，连接部41会被拉伸，由于连接部41上设置有弯曲部，因此，弯曲部会出现一定程度的变形，从而使得连接部41发生形变，如图7中公共连接区71内的连接部41变形后的结构所示。
同时，由于相邻的单元岛4均通过连接部41连接，具体的，可通过相对应的连接部41的第三弯曲部相互连接。因此，每4个单元岛4形成一个变形单元70，变形单元70内的连接部41发生变形，从而使得变形单元70中心位置处的间隙变大，柔性面板的面积变大。
本申请实施例中，由于连接部41包括多个弯曲部以及平直部，在变形时，弯曲部更容易变形，并且变形效果好，各弯曲部的变形角度以及范围更大，能在不同的方向上产生一定的形变，从而有效地提高了可伸缩式柔性面板的变形性能，本申请实施例中，当拉伸不低于5%的情况，显示面板仍能正常发光显示，面板的可靠性高。
如图8所示，图8为本申请实施例提供的信号线的排布结构示意图。由于在单元岛4上设置有发光单元81，同时，在发光单元81内包括有多个发光子像素，所述子像素包括红色子像素802、绿色子像素803以及蓝色子像素804。
具体的，在排布各子像素结构时，可将红色子像素802与绿色子像素803沿同一方向排布，该方向可与单元岛4的侧边相互平行，再设置蓝色子像素804，蓝色子像素804的方向也与单元岛4的侧边方向平行，且蓝色子像素804的面积大于红色子像素802和绿色子像素803的面积。具体结构如图8中的排布所示，蓝色子像素804、红色子像素802和绿色子像素803的排布形状与每个单元岛4的排布形状相同。具体的，在本申请实施例中，以图9中的a图为例，红色子像素、蓝色子像素以及绿色子像素围成一个菱形形状，相邻的两子像素之间设置有间隔，且由红色子像素、蓝色子像素以及绿色子像素所围成的菱形的对角线的方向与单元岛形成的菱形的对角线的方向相同。此时，该菱形结构与单元岛形成的菱形结构相同或者相似。
优选的，如图9所示，图9为本申请实施例中子像素的排布结构示意图。参考图9中的a图、b图，红色子像素802、绿色子像素803结构可设置为正方形结构，蓝色子像素804可设置呈长方形结构，但本发明不限于此；相应地还可参考c图、d图、e图红色子像素802、绿色子像素803、蓝色子像素804结构均可设置为正方形结构，且具体可以以彼此交替方式排布，其中蓝色子像素804可以镜像的方式进行排布，第一蓝色子像素B-1和第二蓝色子像素B-2可发射不同的波长的蓝光，且排列方式可具有镜像对称性。
在本申请实施例中，所述发光单元81的像素密度不低于60PPI，并且在显示面板任意方向拉伸伸长率不低于5%的条件下，发光单元81仍能正常发光显示，且亮度保持不变且发光效果好。
进一步的，在第一连接部411上还设置有第一信号线811，在第二连接部412上还设置有第二信号线812，其中，第一信号线811和第二信号线812的布线走向可与连接部的弯曲走向相同，并且，同一连接部内的信号线可等间隔设置，各个信号线的宽度可相同。第一信号线811和第二信号线812均与发光单元81电连接，以提供驱动信号。
优选的，各个连接部内的起始端的信号线可沿着该边的中点位置呈对称排布，具体的，各信号线可包括信号传输线、栅极传输线、电压驱动线等，且本申请实施例中的信号线为叠层结构，以减小线路占据的空间。
如图10所示，图10为本申请实施例提供的连接部及信号线沿Y1-Y2方向的剖面示意图。包括从下往上依次设置的衬底基板10、第一封装层11、平坦化层12、第二封装层13、支撑层14以及第三封装层15。
以及，第一信号线16，第一信号线16设置在平坦化层12内，且平坦化层12完全覆盖多条第一信号线16，通过第一封装层11和第二封装层13对第一信号线16上下进行固定封装，以防止在弯曲过程中第一信号线16发生位移，而出现失效。同时，第一信号线16可等间隔平行设置，且每条信号线的宽度可相同。
具体的，衬底基板10的材料可为聚酰亚胺材料。
如图11所示，图11为本申请实施例提供的连接部及信号线沿X1-X2方向上的剖面示意图。具体包括从下往上依次设置的衬底基板10、第一封装层11、平坦化层12、第二封装层13、支撑层14以及第三封装层15。
以及，第二信号线17，第二信号线17设置在平坦化层12内，且平坦化层12完全覆盖多条第二信号线17。
本申请实施例还提供一种显示装置，显示装置包括本申请实施例中提供的显示面板，所述显示面板为可伸缩式柔性显示面板，该显示装置能够实现在像素密度不低于70.5PPI，在任意方向上的拉伸伸长率不低于5%的情况下，能在空间上任意方向的连续伸缩变形，且在拉伸时，在较小的拉伸应力的作用下即能实现显示面板的变形，同时，显示面板内部的应力分布更均匀，应力集中问题更小。像素显示主体单元的驱动电压走线层不发生断裂等失效现象，显示装置可伸缩性能更好，并且显示质量高。
以上对本申请实施例所提供的一种显示面板及显示装置进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；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申请各实施例的技术方案的范围。

Claims (20)

  1. 一种显示面板，所述显示面板包括：
    衬底基板；
    多个单元岛，所述单元岛在所述衬底基板的第一方向上和第二方向上呈阵列排布，且所述单元岛彼此相互分离；
    多个连接部，所述连接部将相邻的所述单元岛彼此连接；
    发光单元，所述发光单元设置在所述单元岛上，且所述发光单元还包括多个发光子像素；以及
    信号线，所述信号线设置在所述连接部上并电连接所述发光单元；
    其中，每个所述连接部与对应的所述单元岛的每个侧边相连接，所述连接部的起始端设置在所述单元岛的每个所述侧边的中心位置处，且每个所述连接部包括设置在至少三个弯曲方向上的弯曲部以及至少一个平直部；
    所述显示面板还包括位于所述单元岛和所述连接部之间的镂空区域。
  2. 根据权利要求1所述的显示面板，其中所述弯曲部包括第一弯曲部、第二弯曲部以及第三弯曲部；
    所述第一弯曲部与所述单元岛的侧边相连接，所述第二弯曲部与所述第一弯曲部的一端相连接，所述平直部的一端与所述第二弯曲部的一端相连接，且所述平直部的另一端与所述第三弯曲部的一端相连接。
  3. 根据权利要求2所述的显示面板，其中所述连接部包括第一连接部和第二连接部；
    所述第一连接部和所述第二连接部分别设置在所述单元岛两相邻的侧边上，且所述第一连接部的所述第三弯曲部与所述第二连接部的所述第二弯曲部之间的距离小于所述第一连接部的所述平直部与所述第一连接部的所述第一弯曲部或所述第二弯曲部之间的距离。
  4. 根据权利要求2所述的显示面板，其中所述第一弯曲部的内边缘圆弧对应的圆心与所述圆心在所述第一弯曲部对应的侧边上的垂足点和所述圆弧的中点之间形成的夹角小于90°。
  5. 根据权利要求2所述的显示面板，其中所述第一弯曲部的所述内边缘对应的圆弧的半径大于所述第二弯曲部的内边缘对应的圆弧的半径。
  6. 根据权利要求2所述的显示面板，其中相邻的所述单元岛之间通过所述第三弯曲部相互连接。
  7. 根据权利要求1所述的显示面板，其中所述连接部还包括转接部，所述转接部的一端与所述单元岛的侧边连接，所述转接部的另一端与所述第一弯曲部的一端连接，且所述转接部的一端与所述单元岛的所述侧边设置有圆角。
  8. 根据权利要求1所述的显示面板，其中所述单元岛相对的两条侧边上的所述连接部相对所述单元岛的几何中心呈中心对称设置。
  9. 一种显示面板，所述显示面板包括：
    衬底基板；
    多个单元岛，所述单元岛在所述衬底基板的第一方向上和第二方向上呈阵列排布，且所述单元岛彼此相互分离；
    多个连接部，所述连接部将相邻的所述单元岛彼此连接；
    发光单元，所述发光单元设置在所述单元岛上；以及
    信号线，所述信号线设置在所述连接部上并电连接所述发光单元；
    其中，每个所述连接部与对应的所述单元岛的每个侧边相连接，所述连接部的起始端设置在所述单元岛的每个所述侧边的中心位置处，且每个所述连接部包括设置在至少三个弯曲方向上的弯曲部以及至少一个平直部。
  10. 根据权利要求9所述的显示面板，其中所述弯曲部包括第一弯曲部、第二弯曲部以及第三弯曲部；
    所述第一弯曲部与所述单元岛的侧边相连接，所述第二弯曲部与所述第一弯曲部的一端相连接，所述平直部的一端与所述第二弯曲部的一端相连接，且所述平直部的另一端与所述第三弯曲部的一端相连接。
  11. 根据权利要求10所述的显示面板，其中所述连接部包括第一连接部和第二连接部；
    所述第一连接部和所述第二连接部分别设置在所述单元岛两相邻的侧边上，且所述第一连接部的所述第三弯曲部与所述第二连接部的所述第二弯曲部之间的距离小于所述第一连接部的所述平直部与所述第一连接部的所述第一弯曲部或所述第二弯曲部之间的距离。
  12. 根据权利要求10所述的显示面板，其中所述第一弯曲部的内边缘圆弧对应的圆心与所述圆心在所述第一弯曲部对应的侧边上的垂足点和所述圆弧的中点之间形成的夹角小于90°。
  13. 根据权利要求10所述的显示面板，其中所述第一弯曲部的所述内边缘对应的圆弧的半径大于所述第二弯曲部的内边缘对应的圆弧的半径。
  14. 根据权利要求10所述的显示面板，其中相邻的所述单元岛之间通过所述第三弯曲部相互连接。
  15. 根据权利要求9所述的显示面板，其中所述显示面板还包括位于所述单元岛和所述连接部之间的镂空区域，所述镂空区域采用弹性有机层进行填充。
  16. 根据权利要求9所述的显示面板，其中所述连接部还包括转接部，所述转接部的一端与所述单元岛的侧边连接，所述转接部的另一端与所述第一弯曲部的一端连接，且所述转接部的一端与所述单元岛的所述侧边设置有圆角。
  17. 根据权利要求9所述的显示面板，其中所述单元岛相对的两条侧边上的所述连接部相对所述单元岛的几何中心呈中心对称设置。
  18. 根据权利要求9所述的显示面板，其中所述连接部的所述弯曲部的宽度与所述连接部的所述平直部的宽度相同。
  19. 根据权利要求9所述的显示面板，其中所述发光单元包括多个发光子像素，所述发光子像素包括红色子像素、蓝色子像素以及绿色子像素，所述蓝色子像素对应的发光区域的面积大于所述红色子像素对应的发光区域的面积，且所述蓝色子像素对应的发光区域的面积大于所述绿色子像素对应的发光区域的面积，且所述蓝色子像素、所述红色子像素和所述绿色子像素的排布形状与每个所述单元岛的排布形状相同。
  20. 一种显示装置，包括显示面板，所述显示面板包括：
    衬底基板；
    多个单元岛，所述单元岛在所述衬底基板的第一方向上和第二方向上呈阵列排布，且所述单元岛彼此相互分离；
    多个连接部，所述连接部将相邻的所述单元岛彼此连接；
    发光单元，所述发光单元设置在所述单元岛上；以及
    信号线，所述信号线设置在所述连接部上并电连接所述发光单元；
    其中，每个所述连接部与对应的所述单元岛的每个侧边相连接，所述连接部的起始端设置在所述单元岛的每个所述侧边的中心位置处，且每个所述连接部包括设置在至少三个弯曲方向上的弯曲部以及至少一个平直部。
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US12016218B2 (en) 2024-06-18
US20220310741A1 (en) 2022-09-29

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