WO2023087366A1 - 柔性显示面板及显示装置 - Google Patents

柔性显示面板及显示装置 Download PDF

Info

Publication number
WO2023087366A1
WO2023087366A1 PCT/CN2021/133410 CN2021133410W WO2023087366A1 WO 2023087366 A1 WO2023087366 A1 WO 2023087366A1 CN 2021133410 W CN2021133410 W CN 2021133410W WO 2023087366 A1 WO2023087366 A1 WO 2023087366A1
Authority
WO
WIPO (PCT)
Prior art keywords
display panel
flexible display
patterned
support plate
patterned structure
Prior art date
Application number
PCT/CN2021/133410
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 US17/621,326 priority Critical patent/US20230164931A1/en
Publication of WO2023087366A1 publication Critical patent/WO2023087366A1/zh

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
    • H05K5/0018—Casings, cabinets or drawers for electric apparatus with operator interface units having an electronic display
    • 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
    • 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
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1624—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with sliding enclosures, e.g. sliding keyboard or display
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to the field of display technology, in particular to a flexible display panel and a display device.
  • OLED organic light emitting diode
  • the key to rollable and stretchable OLED display technology is that the flexible display panel needs to bear the stretching and curling force of the rolling mechanism during the process of unrolling and rolling, which requires the flexible display panel to be well adapted This stress environment can avoid the problem of debonding of the glue layer and film layer inside the module, and also requires the flexible display panel to have good flatness after unfolding.
  • a support plate made of stainless steel is usually provided at the bottom of the flexible display panel to support the flexible display panel.
  • the support plate is often designed to be very thin.
  • the thinner the thickness of the supporting plate is.
  • the thinner the thickness of the supporting plate the worse the rigidity will be. Require.
  • the existing flexible display panels and stretchable display devices have the problem of not being able to balance the rollability and flatness of the flexible display panels. Therefore, it is necessary to provide a flexible display panel and a display device to improve this defect.
  • Embodiments of the present application provide a flexible display panel and a display device, which are used to solve the problem that existing support plates and display devices cannot balance the rollability and flatness of the flexible display panel.
  • An embodiment of the present application provides a flexible display panel, including a flexible display panel main body and a support plate provided at the bottom of the flexible display panel main body, the flexible display panel main body has a flexible portion, and the support plate has a Corresponding to the curling portion, the curling portion is provided with a plurality of grooves extending along the first direction and arranged at intervals along the second direction, the first direction is different from the second direction;
  • the bottom of the groove is provided with a plurality of first patterned structures.
  • the first patterned structure penetrates the support plate in a third direction, and the third direction is perpendicular to the first direction and the second direction.
  • the first patterned structure extends along the first direction
  • At least two of the first patterned structures are arranged side by side at the bottom of the same groove;
  • any two adjacent first patterned structures are dislocated and arranged at the bottom of the same groove.
  • the first patterned structure includes an intermediate patterned structure and an edge patterned structure, and the edge patterned structure extends from the edge of the curled portion perpendicular to the first direction to the curled portion middle extension of
  • the edge patterned structure is arranged side by side with the middle patterned structure
  • At least one intermediate patterned structure is disposed between any adjacent edge patterned structures, and the edge patterned structure is dislocated from the adjacent intermediate patterned structures.
  • the cross-sectional profile of the intermediate patterned structure is strip-shaped, and the cross-sectional profile of the edge patterned structure is U-shaped.
  • a distance between any adjacent grooves is smaller than a width of the grooves.
  • a ratio of a distance between any adjacent grooves to a width of the grooves is greater than or equal to 0.2 and less than or equal to 0.5.
  • the distance between any adjacent first patterned structures is smaller than the width of the first patterned structures.
  • the ratio of the distance between any adjacent first patterned structures to the width of the first patterned structures is greater than or equal to 0.4 and less than or equal to 0.6 .
  • the ratio of the distance between the bottom of the groove and the bottom of the support plate to the thickness of the support plate is greater than 1/3 or equal to and less than or equal to 1/2.
  • the support plate further includes a transition portion, the transition portion is connected to the curled portion, and the transition portion is provided with a plurality of second patterned structures.
  • the second patterned structure penetrates the support plate in the third direction.
  • the second patterned structure extends along the first direction
  • At least two of the second patterned structures are arranged side by side;
  • any two adjacent second patterned structures are arranged side by side.
  • the density of the second patterned structure is smaller than the density of the first patterned structure.
  • the length of the second patterned structure in the first direction is smaller than the length of the first patterned structure in the first direction.
  • the distance between any adjacent second patterned structures is greater than the distance between any adjacent first patterned structures.
  • the ratio of the distance between any adjacent second patterned structures to the distance between any adjacent first patterned structures is greater than or equal to 1.2 and less than or equal to 2.
  • the density of the second patterned structure is greater than the density of the first patterned structure.
  • the embodiment of the present application also provides a display device, including a flexible display panel, the flexible display panel includes a flexible display panel main body and a support plate arranged at the bottom of the flexible display panel main body, the flexible display panel main body has a flexible part, The support plate has a curled portion corresponding to the flexible portion, and the curled portion is provided with a plurality of grooves extending along the first direction and arranged at intervals along the second direction, the first direction and the second direction is different;
  • the bottom of the groove is provided with a plurality of first patterned structures.
  • the first patterned structure penetrates the support plate in a third direction, and the third direction is perpendicular to the first direction and the second direction.
  • the first patterned structure extends along the first direction
  • At least two of the first patterned structures are arranged side by side at the bottom of the same groove;
  • any two adjacent first patterned structures are dislocated and arranged at the bottom of the same groove.
  • the embodiments of the present application provide a flexible display panel and a display device
  • the display device includes a flexible display panel
  • the flexible display panel includes a flexible display panel main body and a support plate
  • the support plate is set At the bottom of the flexible display panel main body
  • the flexible display panel has a flexible part
  • the support plate has a curled part corresponding to the flexible part.
  • the grooves are arranged at intervals in the second direction, and a plurality of first patterned structures are arranged at the bottom of the grooves, so as to ensure the rigidity of the curled portion while improving the bending performance of the curled portion, so that both Rollability and flatness of flexible display panels in display devices.
  • FIG. 1 is an exploded schematic diagram of a flexible display panel adopted in an embodiment of the present application
  • FIG. 2 is a schematic structural view of a support plate provided in an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a flexible display panel in a bent state provided by an embodiment of the present application
  • Fig. 4 is a sectional view along the A-A direction of the support plate provided by the embodiment of the present application;
  • Fig. 5 is a schematic structural diagram of the edge part of the support plate provided by the embodiment of the present application.
  • FIG. 6 is a partially enlarged schematic view of the edge portion of the support plate provided by the embodiment of the present application.
  • FIG. 7 is a schematic diagram of the deformation of the curling part provided by the embodiment of the present application.
  • Fig. 8 is a schematic plan view of the deformation unit provided by the embodiment of the present application.
  • Fig. 9 is a graph showing the relationship between the length of the first patterned structure and the bending stress and rebound force
  • FIG. 10 is a diagram showing the relationship between the width of the intermediate patterned structure in the second direction x and the bending stress and rebound force;
  • FIG. 11 is a graph showing the relationship between the distance between adjacent first patterned structures and the bending stress and rebound force provided by the embodiment of the present application;
  • Fig. 12 is a schematic structural diagram of a display device in a contracted state provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a display device provided in an embodiment of the present application in an unfolded state.
  • the embodiment of the present application provides a flexible display panel, as shown in FIG. 1 , which is an exploded schematic view of the flexible display panel adopted in the embodiment of the present application.
  • the flexible display panel 100 includes a flexible display panel main body 10 and a support plate 20 .
  • the support plate 20 can be disposed on the bottom of the flexible display panel main body 10 .
  • the support plate 20 and the flexible display panel main body 10 can be bonded by the foam glue 30 .
  • the foam glue 30 can not only provide good adhesion, but also absorb the bending stress generated by the deformation of the support plate 20 during the bending process, so as to prevent the film layer from debonding between the support plate 20 and the flexible display panel main body 10, thereby The risk of film debonding and fracture failure in the flexible display panel 100 is reduced.
  • the flexible display panel body 10 may include a backplane 11, a display layer 12, a polarizer 13, and a protective cover 14 that are sequentially stacked.
  • the display layer 12 may include a driving circuit layer and an array arranged on the driving circuit layer and connected to the driving circuit layer. A plurality of light emitting devices electrically connected.
  • the light emitting device in the display layer 12 may be an organic light emitting diode.
  • the type of light emitting devices in the display layer 12 is not limited to organic light emitting diodes, and may also be miniature light emitting diodes (mini LEDs) or smaller micro light emitting diodes (Micro LEDs).
  • the polarizer 13 is a polymer optical film with high polarization optical properties, high temperature resistance, high humidity and other characteristics.
  • the protective cover 14 can be made of a transparent polymer material, so that the protective layer has good optical properties, wear resistance, and scratch resistance, and plays a role in protecting the display layer 12 .
  • the material of the support plate 20 is stainless steel (SUS), so that the support plate 20 has good rigidity and bending performance.
  • the support plate 20 may be a high-strength thin steel plate containing manganese and nickel-plated, with a single yield limit not lower than 1600 MPa, and prepared by cold-pressing and drawing process, which has excellent toughness and strength.
  • the material of the support plate 20 may include but not limited to alloy materials such as titanium alloy, copper alloy, magnesium-aluminum alloy or other metal materials, or non-metallic materials such as carbon fiber composite board.
  • FIG. 2 is a schematic structural view of the support plate provided by the embodiment of the present application.
  • the support plate 20 includes a curled portion 201 and a non-curled portion 202 .
  • the uncurled portion 202 is disposed on at least one side of the curled portion 201, and the curled portion 201 is provided with a plurality of grooves extending along the first direction y and arranged at intervals along the second direction x 21.
  • the first direction y is different from the second direction x.
  • the first direction y is perpendicular to the second direction x
  • the first direction y is parallel to the width direction of the support plate
  • the second direction x is parallel to the length direction of the support plate.
  • the first direction y may also intersect with the second direction x, but they are not perpendicular.
  • Figure 3 is a schematic structural view of the flexible display panel provided by the embodiment of the present application in a bent state.
  • the part 201 corresponds to the flexible part 102 and is used to support the flexible part 102 .
  • the flexible part 102 has good bending and folding properties.
  • the backplane 11, the display layer 12, the polarizer 13 and the protective cover 14 correspond to the flexible part.
  • the bent portion of 102 is also in a bent state, and the curled portion of the support plate 20 corresponding to the bent portion of the flexible portion 102 is also in a bent state.
  • the part of the back plate 11, the display layer 12, the polarizer 13, and the protective cover 14 corresponding to the unbent part of the flexible part 102 is in a flattened state, and the curled part 201 corresponds to the unbent portion of the flexible portion 102 is also in a flattened state.
  • the opening of the groove 21 is disposed toward a side of the support plate 20 away from the main body 10 of the flexible display panel. It can be understood that, when the flexible display panel body 10 is in the unfolded state, at least part of the curled portion 201 can be on the same plane as the non-curled portion 202 , and together with the non-curled portion 202 , they can support the flexible display panel body 10 .
  • One side surface of 10 is a flat surface, so as to ensure the flatness of the flexible display panel main body 10 when it is in an unfolded state.
  • the width of each of the grooves 21 in the second direction x is the same, and the distance between adjacent grooves 21 is also the same, so that not only can the support plate 20 be lowered
  • the curvature of each part of the curling portion 201 can be made consistent, so that the force of each part of the curling portion 201 is more uniform.
  • the width of the groove 21 may gradually increase from the edge of the curled portion 201 close to the non-curled portion 202 to the center of the curled portion 201 .
  • the width of the groove 21 may also gradually decrease from the edge of the curled portion 201 close to the non-curled portion 202 to the center of the curled portion 201 .
  • the bottom of the groove 21 is provided with a plurality of first patterned structures 22 .
  • a plurality of first patterned structures 22 are provided at the bottom of each of the grooves 21 , and the first patterned structures 22 in the bottom of each of the grooves 21 The number and density are the same.
  • the number or density of the first patterned structures 22 in the bottom of each groove 21 can also be different, the more the number or the density of the first patterned structures 22 in the bottom of the groove 21, the more curl
  • the quantity or density of the first patterned structures 22 in the bottom of the groove 21 may gradually increase or decrease gradually from the edge of the curled portion 201 near the non-curled portion 202 to the center of the curled portion 201 .
  • FIG. 4 which is a cross-sectional view of the support plate provided in the embodiment of the present application along the direction A-A
  • the first patterned structure 22 runs through the support plate 20 in the third direction z.
  • the third direction z is perpendicular to the first direction y and the second direction x.
  • the bending stiffness of the curled portion 201 can be further reduced, and the bending performance of the support plate 20 can be improved, and the part between adjacent grooves 21 can be used as support spokes 23 to maintain the rigidity of the support plate 20, thereby ensuring the display The flatness of the panel main body 10 in the unfolded state.
  • the distance H1 between the bottom of the groove 21 and the bottom of the support plate 20 should be less than or equal to half of the thickness H2 of the support plate 20 .
  • the sum of the depth of the groove 21 and the distance H1 between the bottom of the groove 21 and the bottom of the support plate 20 is the thickness H2 of the support plate 20, the greater the depth of the groove 21, the better the bending performance of the curled portion 201, The smaller the bending stiffness, the less the bending performance of the curled portion 201 cannot meet the requirements of the flexible display panel due to the insufficient depth of the groove 21 .
  • the ratio of the distance H1 between the bottom of the groove 21 and the bottom of the support plate 20 to the thickness H2 of the support plate should be greater than or equal to 1/3 and less than or equal to 1/2, so that The rigidity and bending performance of the support plate 20 at the curled portion 201 are taken into account.
  • the ratio of the distance H1 between the bottom of the groove 21 and the bottom of the support plate 20 to the thickness H2 of the support plate 20 is 1/2, and the bottom of the groove 21
  • the distance H1 from the bottom of the support plate 20 is 100 ⁇ m
  • the thickness H2 of the support plate 20 is 200 ⁇ m.
  • the thickness H2 of the support plate 20 is not limited to the above-mentioned 200 ⁇ m, but may also be greater or less than 200 ⁇ m.
  • the ratio of the distance H1 between the bottom of the groove 21 and the bottom of the support plate 20 to the thickness H2 of the support plate 20 can also be 1/3 or 2/5 wait.
  • the first patterned structure 22 may also only extend from the bottom of the groove 21 to the inside of the support plate 20 , but does not penetrate the support plate 20 . In this way, the rigidity of the curled portion 201 can be further reduced to a certain extent, and the bending performance of the support plate 20 can be improved.
  • FIG. 5 is a schematic structural view of the edge part of the support plate provided by the embodiment of the present application
  • FIG. 6 is a partially enlarged schematic view of the edge part of the support plate provided by the embodiment of the present application.
  • the first patterned structure 22 extends along the first direction y. In the first direction y, at least two first patterned structures 22 are arranged side by side at the bottom of the same groove 21. In the second direction x, any two adjacent first patterned structures 22 are dislocated and arranged at the bottom of the same groove 21 .
  • a plurality of first patterned structures 22 are arranged side by side in the first direction y to form a row of first patterned structures 22 , and each groove 21 is provided with three rows of first patterned structures 22 .
  • Patterned structure 22 In the second direction x, any two adjacent first patterned structures 22 in any two adjacent rows of first patterned structures 22 are arranged in a dislocation manner.
  • the number of columns of the first patterned structure 22 provided in each groove 21 can be selected according to the width of the groove 21 and the bending performance required by the curled portion 201 of the support plate 20, and is not limited to the above-mentioned
  • the 3 columns in the embodiment can also be 2 columns, 4 columns, 5 columns or more than 5 columns, etc.
  • a plurality of first patterned structures 22 are arranged side by side at intervals in the first direction y to form a row of first patterned structures 22, and each groove 21 is provided with three rows of first patterned structures 22, and in the second In the direction x, any two adjacent first patterned structures 22 in any two adjacent rows of first patterned structures 22 are arranged side by side.
  • the first patterned structure 22 includes an intermediate patterned structure 221 and an edge patterned structure 222, and the edge patterned structure 222 is perpendicular to the first direction by the curled portion 201 The edge of y extends toward the middle of the curled portion 201 .
  • the edge patterned structure 222 is arranged side by side with the middle patterned structure 221, and in the second direction x, any adjacent edge patterned structure 222 is provided with at least One middle patterned structure 221 , the edge patterned structure 222 and the adjacent middle patterned structure 221 are dislocated.
  • edge patterned structures 222 By arranging a plurality of edge patterned structures 222 on the edge of the curled portion 201 perpendicular to the first direction y, it helps to disperse the deformation and stress generated in the middle portion of the curled portion 201 to the edge portion of the curled portion 201, avoiding the The stress in the middle part and the edge part of 201 is too concentrated, which reduces the stress exerted by the support plate 20 on the adjacent adhesive layer or film layer during the bending or curling process.
  • the length of the middle patterned structure 221 in the first direction y is greater than the length of the edge patterned structure in the first direction y.
  • the length of the middle patterned structure 221 in the first direction y may also be less than or equal to the length of the edge patterned structure 222 in the first direction y, which is not limited here.
  • cross-sectional profile of the middle patterned structure 221 is strip-shaped, and the cross-sectional profile of the edge patterned structure 222 is U-shaped.
  • the intermediate patterned structure 221 has oppositely arranged first ends in a cross-sectional profile parallel to the first direction y and the second direction x. 221a, the second end portion 221b and the first connecting portion 221c and the second connecting portion 221d which are oppositely arranged, the first connecting portion 221c is connected to one side of the first end portion 221a and the second end portion 221b, and the second connecting portion The portion 221d is connected to the other side of the first end portion 221a and the second end portion 221b.
  • the cross-sectional profiles of the first end portion 221 a and the second end portion 221 b are semicircular, and the cross-sectional profiles of the first connecting portion 221 c and the second connecting portion 221 d are linear.
  • the cross-sectional profile of the first end portion 221a and the second end portion 221b is not limited to the semicircle in the above-mentioned embodiment, but can also be a semi-ellipse or a curved shape with at least two curved portions with different bending directions. or other irregular shapes.
  • the cross-sectional profile of the first connecting portion 221c and the second connecting portion 221d is not limited to the semicircle in the above-mentioned embodiment, but can also be arc-shaped, curved with at least two curved portions with different bending directions, or other irregular shapes wait.
  • the cross-sectional profile of the edge patterned structure 222 parallel to the first direction y and the second direction x has a third end portion 222a and a third connecting portion 222b and a fourth connecting portion 222c disposed opposite to each other.
  • the connecting portion 222b and the fourth connecting portion 222c are respectively connected to the third end portion 222a.
  • the cross-sectional profile of the third end portion 222a is semicircular, and the cross-sectional profiles of the third connecting portion 222b and the fourth connecting portion 222c are linear.
  • the cross-sectional profile of the third end portion 222a is not limited to the semicircle in the above embodiment, but may also be a semi-ellipse, a curve with at least two curved portions with different bending directions, or other irregular shapes.
  • the cross-sectional profile of the third connecting portion 222b and the fourth connecting portion 222c is not limited to the semicircle in the above-mentioned embodiment, but can also be arc-shaped, curved with at least two curved portions with different bending directions, or other irregular shapes. wait.
  • the first patterned structure 22 includes a first sub-patterned structure 22a, a second The sub-patterned structure 22b, the third sub-patterned structure 22c, the fourth sub-patterned structure 22d, the first sub-patterned structure 22a and the (n+1)th column-th sub-pattern in the n-th column sub-patterned structure
  • the second end part, a part of the first connection part and a part of the second connection part, and the second sub-patterned structure 22b arranged side by side with the first sub-patterned structure 22a in the (n+2)th column constitute a set of deformation
  • a unit 210, the deforming unit 210 has an I-shaped structure, where
  • the curled portion 201 can be bent from a flat state to a curved state along the direction indicated by the arrow.
  • the first sub-patterned structure 22a, the second sub-patterned structure 22b, a part of the third sub-patterned structure 22c, and a part of the fourth sub-patterned structure 22d are gradually Deformation and expansion, that is, the width of the first sub-patterned structure 22a, the second sub-patterned structure 22b, a part of the third sub-patterned structure 22c and a part of the fourth sub-patterned structure 22d in the second direction x gradually increase, so that the width of the groove 21 shown in FIG. 9 in the second direction x is increased.
  • Each group of deformation units 210 in the crimping part 201 accumulates the opening deformation action during the bending or curling process so that the crimping part 201 has good deformability, which helps to release the stress generated during the bending or curling process, In this way, it is ensured that the support plate 20 can be bonded with the foam glue 30 of the flexible display panel main body 10 to maintain a better deformation followability, so that during the bending or curling process of the flexible display panel 100, the curled portion 201 of the support plate 20 can be aligned with the flexible display panel 100. Adjacent adhesive layers and film layers are deformed in coordination, thereby reducing the risk of debonding and breaking of the film layers during the bending or rolling process of the flexible display panel 100 .
  • the distance B1 between any adjacent grooves 21 is smaller than the width B2 of the grooves 21 .
  • the support spokes 23 between adjacent grooves 21 hardly deform, and since their thickness H2 in the third direction z is greater than that from the bottom of the groove 21 to the support plate 20
  • the thickness H1 between the bottoms enables the support spokes 23 to maintain good support performance of the support plate 20 and ensure the flatness of the flexible display panel main body 10 in the unfolded state.
  • the width of the supporting spokes 23 is too large, the bending stiffness of the curled portion 201 will be too large, and the bending performance cannot meet the requirements of the flexible display panel. Therefore, the distance B1 between any adjacent grooves 21 is limited to less than The width B2 of the groove 21 can balance the bendability and rigidity of the support plate 20 .
  • the distance B1 between any adjacent grooves 21 may also be greater than or equal to the width B2 of the grooves 21 , which is not limited here.
  • FIG. 8 is a schematic plan view of the deformation unit provided by the embodiment of the present application.
  • FIG. 9 is a relationship diagram between the length of the first patterned structure and the bending stress and rebound force. It can be seen from FIG. 9 that the first patterned structure 22 is in the first The length L in the direction y is negatively correlated with the bending stress and rebound stress of the support plate 20 , the larger the length L of the first patterned structure 22 is, the smaller the bending stress and rebound stress of the support plate 20 are.
  • the reference value of the fatigue limit stress of the raw material of the support plate for 200,000 times of crimping is 1000 MPa
  • the ultimate fracture strength value of the material selection of the support plate 20 is 1600 MPa.
  • the length L of the intermediate patterned structure 221 in the first direction y is not limited to 4mm in the above-mentioned embodiment, but can also be 3.5mm, 4.5mm, 5mm, 5.5mm or 6mm, etc., and it only needs to be greater than or equal to 3.5mm and less than or equal to 6mm.
  • the length of the edge patterned structure 222 in the first direction y should be smaller than the length L of the middle patterned structure 221 .
  • the distance c between any adjacent first patterned structures 22 is smaller than the width d of the first patterned structures 22 .
  • FIG. 10 is a diagram showing the relationship between the width of the first patterned structure in the second direction x and the bending stress and rebound force. Taking the intermediate patterned structure 221 shown in FIG. 8 as an example, the intermediate patterned structure 221 is in the second direction x.
  • the width d on x is positively correlated with the bending stress of the support plate 20, that is, the greater the width d of the intermediate patterned structure 221 in the second direction x, the greater the bending stress of the support plate 20, when the intermediate patterned structure 221
  • the width d in the second direction x is greater than 180 ⁇ m, the rate of increase of the bending stress of the support plate 20 is also greater, and the bending stress of the support plate 20 gradually approaches and exceeds the reference value of the fatigue limit stress of the raw material of the support plate 20 1000MPa.
  • the width d of the intermediate patterned structure 221 in the second direction x is positively correlated with the rebound force of the support plate 20, that is, the intermediate patterned structure
  • the greater the width d of 221 in the second direction x the greater the rebound force of the support plate 20;
  • the width d of the intermediate patterned structure 221 in the second direction x is greater than or equal to 180 ⁇ m, the intermediate patterned structure 221
  • the width d in the second direction x is negatively correlated with the rebound force of the support plate 20 , that is, the larger the width d of the intermediate patterned structure 221 in the second direction x, the smaller the rebound force of the support plate 20 .
  • FIG. 11 is a diagram showing the relationship between the distance between adjacent first patterned structures and the bending stress and rebound force provided by the embodiment of the present application.
  • the intermediate patterned structure 221 shown in FIG. 8 as an example, adjacent intermediate patterned structures
  • the distance c between the structures 221 is positively correlated with the bending stress and rebound force of the support plate 20, that is, the larger the distance c between adjacent intermediate patterned structures 221, the greater the bending stress and rebound force of the support plate 20.
  • 12 and 13 it can be seen that if the distance c between any adjacent intermediate patterned structures 22 is smaller than the width d of the intermediate patterned structure 221, the bending stress of the support plate 20 at the crimped portion 201 can be reduced and the crimp can be improved.
  • the bending performance of the part 201 is a diagram showing the relationship between the distance between adjacent first patterned structures and the bending stress and rebound force provided by the embodiment of the present application.
  • the ratio of the distance between any adjacent first patterned structures 22 to the width of the first patterned structures 22 is greater than or equal to 0.4 and less than or equal to 0.6.
  • the distance c is 100 ⁇ m
  • the ratio of the width d of the intermediate patterned structure 221 in the second direction x to the distance c between any adjacent intermediate patterned structures 221 is 0.5.
  • the width d of the intermediate patterned structure 221 in the second direction x is not limited to 200 ⁇ m in the above embodiment, but can also be 150 ⁇ m, 180 ⁇ m, 220 ⁇ m or 240 ⁇ m, etc., and only needs to be greater than or equal to 150 ⁇ m and less than or equal to 240 ⁇ m.
  • the distance c between any adjacent intermediate patterned structures 221 is not limited to 100 ⁇ m in the above embodiment, but can also be 20 ⁇ m, 40 ⁇ m, 60 ⁇ m, 80 ⁇ m or 120 ⁇ m, etc., and only needs to be greater than or equal to 20 ⁇ m and less than or equal to 120 ⁇ m.
  • the ratio of the distance c between any adjacent intermediate patterned structures to the width d of the intermediate patterned structure is not limited to 0.5 in the above embodiment, but can also be 0.4 or 0.6, etc., only need to be greater than or equal to 0.4 and It can be less than or equal to 0.6.
  • the width of the edge patterned structure 222 in the second direction x is the same as the width of the middle patterned structure 221 in the second direction x.
  • the distance between the edge patterned structure 222 and the adjacent first patterned structure 22 in the second direction x is the same as the distance between the adjacent first patterned structures 22 .
  • the bending radius R when the support plate is in a bent state is 3.6 mm.
  • the bending radius R of the support plate 20 in the bent state is not limited to the above-mentioned 3.6 mm, and the curvature radius of the support plate 20 in the bent state can be selected according to actual needs.
  • the thickness of the support plate 20, and the depth of the groove 21, the length L1, width b, and adjacent first patterned structure 22 can be determined through mechanical simulation analysis and actual test results.
  • a distance c between the patterned structures 22 enables the curled portion 201 of the support plate 20 to have an optimal bending performance, reducing the risk of film debonding or fracture failure of the flexible display panel 100 .
  • the support plate 20 further includes a transition portion 203 connected to the curled portion 201 , and the transition portion 203 is provided with a plurality of second patterned structures 24 .
  • the support plate 20 has two transition portions 203, the two transition portions 203 are respectively arranged on opposite sides of the curled portion 201, and are connected to the curled portion 201, and the non-curled portion 202 is arranged on the transition portion 203 away from One side of the curled portion 201 is connected with the transition portion 203 .
  • the second patterned structure 24 may penetrate the support plate 20 in the third direction z. In this way, the stiffness of the transition portion 203 can be reduced and the bending performance of the transition portion can be improved. During the curling or bending process of the support plate 20 , it is possible to prevent the transition part 203 from breaking and failing due to excessive force, thereby improving the tensile resistance and reliability of the support plate 20 .
  • the second patterned structure 24 can also protrude into the support plate 20 in the third direction z, but does not penetrate through the support plate 20 . In this way, the stiffness of the transition portion 203 can be reduced to a certain extent and the bending performance of the transition portion 203 can be improved.
  • the second patterned structure 24 extends along the first direction y, in the first direction y, at least two of the second patterned structures 24 are arranged side by side, in the second direction x In the above, any two adjacent second patterned structures 24 are arranged side by side or dislocated.
  • a plurality of second patterned structures 24 are arranged side by side at intervals to form a column of second patterned structures 24
  • the transition portion 203 is provided with multiple columns of second patterned structures 24 , and any adjacent two of the second patterned structures 24 in any two adjacent columns of second patterned structures 24 are arranged side by side.
  • a plurality of second patterned structures 24 are arranged side by side at intervals to form a row of second patterned structures 24, and in the second direction x, the transition portion 203 is provided with multiple rows Two patterned structures 24, and any two adjacent second patterned structures 24 in any two adjacent rows of second patterned structures 24 may also be arranged in a dislocation.
  • the density of the second patterned structure 24 is lower than the density of the first patterned structure 22.
  • the length of the second patterned structure 24 in the first direction y is smaller than the length of the first patterned structure 22 in the first direction y. Since the length of the second patterned structure 24 is negatively correlated with the bending stress and rebound force of the support plate 20, the bending stiffness of the transition portion 203 can be made greater than the bending stiffness of the curled portion 201, thereby not only avoiding the transition The portion 203 may break and fail due to excessive local force, and can also improve the support of the support plate 20, so as to ensure the flatness of the flexible display panel 100 in the unfolded state.
  • the distance between any adjacent second patterned structures 24 is greater than the distance between any adjacent first patterned structures 22 .
  • the distance between adjacent second patterned structures 24 is positively correlated with the rigidity of the transition portion 203 , the greater the distance between adjacent second patterned structures 24 , the greater the rigidity of the transition portion 203 .
  • the rigidity of the transition portion 203 can be greater than the rigidity of the curled portion 201 while satisfying that the transition portion 203 has a certain deformation capacity, so as to avoid the failure of the transition portion 203 due to excessive local stress. , can also ensure the support of the transition portion 203 .
  • the ratio of the distance between any adjacent second patterned structures 24 to the distance between any adjacent first patterned structures 22 is 2.
  • the ratio of the distance between any adjacent second patterned structures 24 to the distance between any adjacent first patterned structures 22 is not limited to 2 in the above embodiment, and may also be 1.2, 1.5, or 1.8, etc., only need to be greater than or equal to 1.2 and less than or equal to 2.
  • the width of the first patterned structure 22 is the same as the width of the second patterned structure 24, so as to ensure the processing accuracy of the first patterned structure 22 and the second patterned structure 24 Consistency, thereby reducing the difficulty of processing and manufacturing the support plate.
  • the embodiment of the present application also provides a display device, as shown in Figure 12, which is a schematic structural diagram of the display device provided in the embodiment of the present application in a contracted state, the display panel includes a first middle frame 200, a second middle frame 300 and the flexible display panel 100 as described in the above embodiments, a part of the flexible display panel can be fixed on the first middle frame 200 to realize the function of image display in the contracted state, and the non-curled part 202 of the support plate 20 It is used to support the part of the main body of the flexible display panel disposed on the first middle frame 200 .
  • Another part of the flexible display panel 100 can be shrunk in the accommodation space inside the first middle frame 200 and the second middle frame 300, so as to improve the portability of the display device, and the curled part 201 of the support plate 20 is used to support the flexible display panel 100 is contracted to the part of the first middle frame 200 and the second middle frame 300, and is used to drive the part to slide.
  • the figure is a schematic structural diagram of the display device provided in the embodiment of the present application in an unfolded state.
  • the second middle frame 300 is slidably connected to the first middle frame 200, and the second middle frame 300 moves along the second direction x
  • the part of the flexible display panel 100 stored in the accommodating spaces of the first middle frame 200 and the second middle frame 300 can be gradually displayed, and can be connected with the flexible display panel 100 that has not been
  • the collected parts are on the same plane, so as to realize the function of displaying images with a larger area in the unfolded state.
  • the curled portion 201 of the support plate 20 can gradually slide through the arc-shaped side wall of the second middle frame 300 to be on the same plane as the non-curled portion 202, and be fixed on the
  • the flexible display panel main body 10 on the curling portion 201 is gradually displayed from the accommodating spaces of the first middle frame 200 and the second middle frame 300 .
  • the support plate 20 is provided with only one curled portion 201, only the second middle frame 300 in the display device can be unilaterally stretched relative to the first middle frame 200, and the curled portion 201 passes through the second middle frame 300 The curved side wall slides.
  • the support plate 20 may have two or more curled portions 201 .
  • the display device provided in the embodiment of the present application may be a mobile terminal, such as a smart phone, a tablet computer, a notebook computer, etc., and the display device may also be a wearable terminal, such as a smart watch, a smart bracelet, smart glasses, an augmented reality device, etc.
  • the display device may also be a fixed terminal, such as a desktop computer, a television, and the like.
  • the display device may also include a rolling mechanism for making the flexible display panel 100 in a flattened state or a retracted state, and a power supply and a driving integrated circuit board for driving the flexible display panel to realize the screen display function, etc.
  • Electronic components, winding structures, power supply and driver integrated circuit boards, etc. can be arranged in the accommodating space of the first middle frame 200 and/or the second middle frame 300 .
  • Embodiments of the present application provide a flexible display panel and a display device
  • the display device includes a flexible display panel
  • the flexible display panel includes a flexible display panel main body and a support plate
  • the support plate is arranged on the flexible display panel main body
  • the support plate has a curled portion, and a plurality of grooves extending along the first direction and arranged at intervals along the second direction are arranged on the curled portion, and a plurality of first patterned grooves are arranged at the bottom of the grooves.
  • the structure can improve the bending performance of the curled portion while ensuring the rigidity of the curled portion, so that the rollability and flatness of the flexible display panel in the display device can be taken into account.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种柔性显示面板（100）及显示装置，显示装置包括柔性显示面板（100），柔性显示面板（100）包括柔性显示面板主体（10）和支撑板（20），支撑板（20）的卷曲部（201）设置多个凹槽（21），凹槽（21）的底部设置多个第一图案化结构（22），以此在保证卷曲部（201）的刚度的同时，还可以提高卷曲部（201）的弯折性能，从而可以兼顾显示装置中柔性显示面板（100）的可卷曲性和平整性。

Description

柔性显示面板及显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种柔性显示面板及显示装置。
 背景技术
随着柔性有机发光二极管（organic light emitting diode, OLED）显示技术逐渐趋向成熟，显示行业向“更轻、更薄、更大”的方向发展，近年来，可折叠式OLED显示技术已在手机、平板电脑行业得到了广泛的应用。然而，可折叠的显示装置所存在的折痕问题，至今未得到妥善的解决。为使显示装置的屏幕实现大小屏自由切换的显示效果，且能最大限度地减少折痕问题，可卷曲式、可拉伸式OLED技术应运而生。
可卷曲式、可拉伸式OLED显示技术最为关键的是柔性显示面板在展开与收卷的过程中，需要承受卷曲机构的拉伸和卷曲拉力，这要求柔性显示面板既能很好的适配这一应力环境，又能避免模组内部的胶层和膜层出现脱粘的问题，同时也要求柔性显示面板在展开后具备良好的平整性。
 技术问题
为兼顾柔性显示面板的可弯折能和平整性，通常在柔性显示面板的底部设置采用不锈钢制成的支撑板用于支撑柔性显示面板。为确保柔性显示面板具有良好的可弯折、可卷曲的性能，支撑板往往设计得很薄。但是，柔性显示面板的弯折、卷曲半径越小，所选用的支撑板的厚度则越薄，然而支撑板的厚度越薄，刚度就越差，在柔性显示面板展开后，平整度无法达到使用要求。
综上所述，现有柔性显示面板及可拉伸式的显示装置存在无法兼顾柔性显示面板的可卷曲性和平整性的问题。故，有必要提供一种柔性显示面板及显示装置来改善这一缺陷。
 技术解决方案
本申请实施例提供一种柔性显示面板及显示装置，用于解决现有支撑板及显示装置存在的无法兼顾柔性显示面板的可卷曲性和平整性的问题。
本申请实施例提供一种柔性显示面板，包括柔性显示面板主体和设置于所述柔性显示面板主体底部的支撑板，所述柔性显示面板主体具有柔性部，所述支撑板具有与所述柔性部对应的卷曲部，所述卷曲部设置有多个沿所述第一方向延伸并沿所述第二方向间隔排列的凹槽，所述第一方向与所述第二方向不同；
其中，所述凹槽的底部设置有多个第一图案化结构。
根据本申请一实施例，所述第一图案化结构在第三方向上贯穿所述支撑板，所述第三方向垂直于所述第一方向和所述第二方向。
根据本申请一实施例，所述第一图案化结构沿所述第一方向延伸；
在所述第一方向上，至少两个所述第一图案化结构并排设置于同一所述凹槽的底部；
在所述第二方向上，任意相邻两个所述第一图案化结构错位排布于同一所述凹槽的底部。
根据本申请一实施例，所述第一图案化结构包括中间图案化结构和边缘图案化结构，所述边缘图案化结构由所述卷曲部垂直于所述第一方向的边缘向所述卷曲部的中间延伸；
其中，在所述第一方向上，所述边缘图案化结构与所述中间图案化结构并排设置；
在所述第二方向上，任意相邻所述边缘图案化结构之间设置有至少一个所述中间图案化结构，所述边缘图案化结构与相邻所述中间图案化结构错位排布。
根据本申请一实施例，所述中间图案化结构的截面轮廓呈长条形，所述边缘图案化结构的截面轮廓呈U型。
根据本申请一实施例，在所述第二方向上，任意相邻所述凹槽之间的距离小于所述凹槽的宽度。
根据本申请一实施例，在所述第二方向上，任意相邻所述凹槽之间的距离与所述凹槽的宽度的比值大于或等于0.2且小于或等于0.5。
根据本申请一实施例，在所述第二方向上，任意相邻所述第一图案化结构之间的距离小于所述第一图案化结构的宽度。
根据本申请一实施例，在所述第二方向上，任意相邻所述第一图案化结构之间的距离与所述第一图案化结构的宽度的比值大于或等于0.4且小于或等于0.6。
根据本申请一实施例，在所述第三方向上，所述凹槽的底部与所述支撑板的底部之间的距离与所述支撑板的厚度的比值大于1/3或等于且小于或等于1/2。
根据本申请一实施例，所述支撑板还包括过渡部，所述过渡部连接于所述卷曲部，所述过渡部设置有多个第二图案化结构。
根据本申请一实施例，所述第二图案化结构在所述第三方向上贯穿所述支撑板。
根据本申请一实施例，所述第二图案化结构沿所述第一方向延伸；
在所述第一方向上，至少两个所述第二图案化结构并排设置；
在所述第二方向上，任意相邻两个所述第二图案化结构并排设置。
根据本申请一实施例，所述第二图案化结构的密度小于所述第一图案化结构的密度。
根据本申请一实施例，所述第二图案化结构在所述第一方向上的长度小于所述第一图案化结构在所述第一方向上的长度。
根据本申请一实施例，在所述第二方向上，任意相邻所述第二图案化结构之间的距离大于任意相邻所述第一图案化结构之间的距离。
根据本申请一实施例，在所述第二方向上，任意相邻所述第二图案化结构之间的距离与任意相邻所述第一图案化结构之间的距离的比值大于或等于1.2且小于或等于2。
根据本申请一实施例，所述第二图案化结构的密度大于所述第一图案化结构的密度。
本申请实施例还提供一种显示装置，包括柔性显示面板，所述柔性显示面板包括柔性显示面板主体和设置于所述柔性显示面板主体底部的支撑板，所述柔性显示面板主体具有柔性部，所述支撑板具有与所述柔性部对应的卷曲部，所述卷曲部设置有多个沿所述第一方向延伸并沿所述第二方向间隔排列的凹槽，所述第一方向与所述第二方向不同；
其中，所述凹槽的底部设置有多个第一图案化结构。
根据本申请一实施例，所述第一图案化结构在第三方向上贯穿所述支撑板，所述第三方向垂直于所述第一方向和所述第二方向。
根据本申请一实施例，所述第一图案化结构沿所述第一方向延伸；
在所述第一方向上，至少两个所述第一图案化结构并排设置于同一所述凹槽的底部；
在所述第二方向上，任意相邻两个所述第一图案化结构错位排布于同一所述凹槽的底部。
 有益效果
本揭示实施例的有益效果：本申请实施例提供一种柔性显示面板及显示装置，所述显示装置包括柔性显示面板，所述柔性显示面板包括柔性显示面板主体和支撑板，所述支撑板设置于所述柔性显示面板主体的底部，所述柔性显示面板具有柔性部，所述支撑板具有与所述柔性部对应的卷曲部，通过在卷曲部设置多个沿所述第一方向延伸并沿所述第二方向间隔排列的凹槽，并在凹槽的底部设置多个第一图案化结构，以此在保证卷曲部的刚度的同时，还可以提高卷曲部的弯折性能，从而可以兼顾显示装置中柔性显示面板的可卷曲性和平整性。
 附图说明
为了更清楚地说明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简单介绍，显而易见地，下面描述中的附图仅仅是揭示的一些实施例，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为本申请实施例通过的柔性显示面板的分解示意图；
图2为本申请实施例提供的支撑板的结构示意图；
图3为本申请实施例提供的柔性显示面板处于弯曲状态的结构示意图；
图4为本申请实施例提供的支撑板沿A-A方向的剖视图；
图5为本申请实施例提供的支撑板的边缘部分结构示意图；
图6为本申请实施例提供的支撑板的边缘部分的局部放大示意图；
图7为本申请实施例提供的卷曲部的变形原理图；
图8为本申请实施例提供的变形单元的平面示意图；
图9为第一图案化结构的长度与弯折应力和反弹力的关系图；
图10为中间图案化结构在第二方向x上的宽度与弯折应力和反弹力的关系图；
图11为本申请实施例提供的相邻第一图案化结构之间的距离与弯折应力和反弹力的关系图；
图12为本申请实施例提供的显示装置处于收缩状态的结构示意图；
图13为本申请实施例提供的显示装置处于展开状态下的结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本揭示可用以实施的特定实施例。本揭示所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本揭示，而非用以限制本揭示。在图中，结构相似的单元是用以相同标号表示。
下面结合附图和具体实施例对本揭示做进一步的说明：
本申请实施例提供一种柔性显示面板，如图1所示，图1为本申请实施例通过的柔性显示面板的分解示意图，柔性显示面板100包括柔性显示面板主体10以及支撑板20，所述支撑板20可以设置于柔性显示面板主体10的底部。
在本申请实施例中，支撑板20与柔性显示面板主体10之间可以通过泡棉胶30贴合。泡棉胶30不仅可以提供良好的粘合力，还可以吸收支撑板20在弯折过程中变形产生的弯折应力，以此避免支撑板20与柔性显示面板主体10发生膜层脱粘，从而降低柔性显示面板100内发生膜层脱粘以及断裂失效的风险。
柔性显示面板主体10可以包括依次层叠设置的背板11、显示层12、偏光片13以及保护盖板14，显示层12可以包括驱动电路层以及阵列排布于驱动电路层上并与驱动电路层电性连接的多个发光器件。
在本申请实施例中，显示层12中的发光器件可以是有机发光二极管。在实际应用中，显示层12中的发光器件的类型不仅限于有机发光二极管，还可以为迷你发光二极管（mini LED）或者体积更小的微型发光二极管（Micro LED）。
偏光片13为具备高偏振度光学特性、耐高温、高湿等特点的高分子光学薄膜。
保护盖板14可以由透明高分子材料制成，以使保护层具有良好的光学特性以及耐磨损、抗刮擦的特性，起到保护显示层12的作用。
支撑板20的材料为不锈钢（SUS），以使支撑板20具有良好的刚性以及弯折性能。具体的，支撑板20可以为含锰且经过镀镍的高强薄钢板，单体屈服极限不低于1600MPa，并且经过冷压拉拔工艺制备而成，具有较优的韧性和强度。在实际应用中，支撑板20的材料可以包括但不限于钛合金、铜合金、镁铝合金等合金材料或者其他金属材料，也可以为碳纤维复合板等非金属材料。
如图2所示，图2为本申请实施例提供的支撑板的结构示意图，所述支撑板20包括卷曲部201和非卷曲部202。当支撑板20处于展平状态时，非卷曲部202设置于卷曲部201的至少一侧，所述卷曲部201设置有多个沿第一方向y延伸并沿第二方向x间隔排列的凹槽21，第一方向y与第二方向x不同。通过在支撑板20的卷曲部201设置多个间隔排布的凹槽21，可以降低卷曲部201整体的刚度，以提高支撑板20的弯折性能。
在本申请实施例中，第一方向y垂直于第二方向x，第一方向y与支撑板的宽度方向平行，第二方向x与支撑板的长度方向平行。在实际应用中，第一方向y也可与第二方向x相互交叉，但并不垂直。
如图3所示，图3为本申请实施例提供的柔性显示面板处于弯曲状态的结构示意图，柔性显示面板主体10具有平面部101以及与所述平面部101连接的柔性部102，所述卷曲部201与所述柔性部102对应，并且用于支撑所述柔性部102。
柔性部102具有良好的弯曲以及折叠性能，当所述柔性显示面板主体10的柔性部102发生弯曲时，所述背板11、显示层12、偏光片13以及保护盖板14对应所述柔性部102发生弯曲的部分也处于弯曲状态，所述支撑板20的卷曲部对应所述柔性部102发生弯曲的部分也处于弯曲状态。当所述柔性部102未发生弯曲时，所述背板11、显示层12、偏光片13以及保护盖板14对应所述柔性部102未发生弯曲的部分均处于展平状态，所述卷曲部201对应所述柔性部102未发生弯曲的部分也处于展平状态。
在本申请实施例中，凹槽21的开口设置在朝向支撑板20背离柔性显示面板主体10的一侧。可以理解的是，当柔性显示面板主体10处于展开状态时，卷曲部201的至少部分可以与非卷曲部202处于同一平面，并与非卷曲部202共同实现支撑柔性显示面板主体10的作用。通过将凹槽21的开口设置在朝向支撑板20背离柔性显示面板主体10的一侧，可以避免对支撑板20朝向柔性显示面板主体10一侧进行开槽，使得支撑板20朝向柔性显示面板主体10的一侧表面为平整表面，从而保证柔性显示面板主体10处于展开状态时的平整度。
在本申请实施例中，每个所述凹槽21在所述第二方向x上的宽度均相同，并且相邻所述凹槽21之间的间隔距离也相同，如此不仅可以降低支撑板20的加工制作难度，当卷曲部201处于弯曲状态时，还可以使卷曲部201各个部分的曲率一致，从而使得卷曲部201中各个部分的受力更加均匀。
在实际应用中，所述凹槽21的宽度可以由卷曲部201靠近非卷曲部202的边缘向卷曲部201的中心逐渐增大。凹槽21的宽度越大，卷曲部201的刚度则越小，如此可以使卷曲部201的弯折性能在卷曲部201靠近非卷曲部202的边缘至卷曲部201的中心的方向上呈逐渐增大的趋势。或者，凹槽21的宽度也可以由卷曲部201靠近非卷曲部202的边缘向卷曲部201的中心逐渐减小。
进一步的，所述凹槽21的底部设置有多个第一图案化结构22。
在本申请实施例中，如图2所示，每个所述凹槽21的底部均设置有多个第一图案化结构22，每个所述凹槽21底部中的第一图案化结构22的数量和密度均相同。
在实际应用中，每个所述凹槽21底部中的第一图案化结构22的数量或密度也可以不同，凹槽21底部中第一图案化结构22的数量越多或者密度越大，卷曲部201的弯折刚度越小，卷曲部201的弯折性能越好。例如，凹槽21底部中的第一图案化结构22的数量或密度可以由卷曲部201靠近非卷曲部202的边缘向卷曲部201的中心逐渐增加或者逐渐减小。
在本申请实施例中，如图4所示，图4为本申请实施例提供的支撑板沿A-A方向的剖视图，所述第一图案化结构22在第三方向z上贯穿所述支撑板20，所述第三方向z垂直于所述第一方向y和所述第二方向x。如此，可以进一步降低卷曲部201的弯折刚度，提高支撑板20的弯折性能，位于相邻凹槽21之间的部分可以作为支撑辐条23起到保持支撑板20刚度的作用，从而保证显示面板主体10在展开状态下的平整性。
进一步的，在所述第三方向z上，所述凹槽21的底部与所述支撑板20的底部之间的距离H1应小于或等于所述支撑板20的厚度H2的一半。凹槽21深度与凹槽21的底部与支撑板20的底部之间的距离H1之和即为支撑板20的厚度H2，凹槽21的深度越大，卷曲部201的弯折性能越好，弯折刚度越小，如此可以避免由于凹槽21的深度不够导致卷曲部201的弯折性能无法满足柔性显示面板的需求。
进一步的，所述凹槽21的底部与所述支撑板20的底部之间的距离H1与所述支撑板的厚度H2的比值应大于或等于1/3且小于或等于1/2，如此可以在兼顾支撑板20在卷曲部201的刚性以及弯折性能。
在本申请实施例中，所述凹槽21的底部与所述支撑板20的底部之间的距离H1与所述支撑板20的厚度H2的比值为1/2，所述凹槽21的底部与所述支撑板20的底部之间的距离H1为100μm，所述支撑板20的厚度H2为200μm。在实际应用中，支撑板20的厚度H2不仅限于上述的200μm，也可以大于或小于200μm。当支撑板20的厚度较小时，所述凹槽21的底部与所述支撑板20的底部之间的距离H1与所述支撑板20的厚度H2的比值也可以为1/3或者2/5等。
在其他实施例中，在第三方向z上，所述第一图案化结构22也可以仅由所述凹槽21的底部延伸至所述支撑板20的内部，但不贯穿支撑板20。如此，可以在一定程度上进一步降低卷曲部201的刚度，并提高支撑板20的弯折性能。
进一步的，结合图5和图6所示，图5为本申请实施例提供的支撑板的边缘部分结构示意图，图6为本申请实施例提供的支撑板的边缘部分的局部放大示意图，所述第一图案化结构22沿所述第一方向y延伸，在所述第一方向y上，至少两个所述第一图案化结构22并排设置于同一所述凹槽21的底部，在所述第二方向x上，任意相邻两个所述第一图案化结构22错位排布于同一所述凹槽21的底部。
在本申请实施例中，如图6所示，多个第一图案化结构22在第一方向y上并排间隔排列形成一列第一图案化结构22，每个凹槽21内设置有三列第一图案化结构22。在第二方向x上，任意相邻两列第一图案化结构22中的任意相邻两个第一图案化结构22错位排布。
在实际应用中，每个凹槽21内设置的第一图案化结构22的列数可以根据凹槽21的宽度以及支撑板20的卷曲部201所需的弯折性能进行选择，而不仅限于上述实施例中的3列，还可以为2列、4列、5列或者5列以上等。
在其他实施例中，多个第一图案化结构22第一方向y上并排间隔排列形成一列第一图案化结构22，每个凹槽21内设置有三列第一图案化结构22，在第二方向x上，任意相邻两列第一图案化结构22中的任意相邻两个第一图案化结构22并排设置。
进一步的，如图5所示，所述第一图案化结构22包括中间图案化结构221和边缘图案化结构222，所述边缘图案化结构222由所述卷曲部201垂直于所述第一方向y的边缘向所述卷曲部201的中间延伸。
结合图5和图6所示，在第一方向y上，边缘图案化结构222与中间图案化结构221并排设置，在第二方向x上，任意相邻边缘图案化结构222之间设置有至少一个中间图案化结构221，边缘图案化结构222与相邻中间图案化结构221错位排布。通过在卷曲部201垂直于第一方向y的边缘设置多个边缘图案化结构222，有助于将卷曲部201的中间部分所产生的变形以及应力分散至卷曲部201的边缘部分，避免卷曲部201的中间部分以及边缘部分的应力过于集中，减小在弯折或卷曲过程中支撑板20向邻近胶层或膜层施加的应力。
在本申请实施例中，中间图案化结构221在第一方向y上的长度大于边缘图案化结构在第一方向y上的长度。在实际应用中，中间图案化结构221在第一方向y上的长度也可以小于或等于边缘图案化结构222在第一方向y上的长度，此处不做限制。
进一步的，所述中间图案化结构221的截面轮廓呈长条形，所述边缘图案化结构222的截面轮廓呈U型。
如图7所示，图7为本申请实施例提供的卷曲部的变形原理图，中间图案化结构221在平行于第一方向y和第二方向x的截面轮廓具有相对设置的第一端部221a、第二端部221b以及相对设置的第一连接部221c和第二连接部221d，第一连接部221c连接于所述第一端部221a和第二端部221b的一侧，第二连接部221d连接于第一端部221a和第二端部221b的另一侧。
在其中一个实施例中，第一端部221a和第二端部221b的截面轮廓均呈半圆形，第一连接部221c和第二连接部221d的截面轮廓均呈直线型。
在实际应用中，第一端部221a和第二端部221b的截面轮廓不仅限于上述实施例中的半圆形，还可以为半椭圆形、具有至少两个弯曲方向不同的弯曲部的曲线型或者其他不规则形状。第一连接部221c和第二连接部221d的截面轮廓不仅限于上述实施例中的半圆形，还可以为弧线形、具有至少两个弯曲方向不同的弯曲部的曲线型或者其他不规则图形等。
如图7所示，边缘图案化结构222在平行于第一方向y和第二方向x的截面轮廓具有第三端部222a以及相对设置的第三连接部222b和第四连接部222c，第三连接部222b和第四连接部222c分别与第三端部222a连接。
在其中一个实施例中，第三端部222a的截面轮廓呈半圆形，第三连接部222b和第四连接部222c的截面轮廓均呈直线型。
在实际应用中，第三端部222a的截面轮廓不仅限于上述实施例中的半圆形，还可以为半椭圆形、具有至少两个弯曲方向不同的弯曲部的曲线型或者其他不规则形状。第三连接部222b和第四连接部222c的截面轮廓不仅限于上述实施例中的半圆形，还可以为弧线形、具有至少两个弯曲方向不同的弯曲部的曲线型或者其他不规则图形等。
如图7所示，图7中仅示意了一个凹槽21以及位于该凹槽21内的多列第一图案化结构22，第一图案化结构22包括第一子图案化结构22a、第二子图案化结构22b、第三子图案化结构22c、第四子图案化结构22d，第n列第子图案化结构中的第一子图案化结构22a与第(n+1)列第子图案化结构中与第一子图案化结构22a相邻设置的第三子图案化结构22c的第一端部、第一连接部的一部分以及第二连接部的一部分、第四子图案化结构22d的第二端部、第一连接部的一部分以及第二连接部的一部分、以及第(n+2)列中与第一子图案化结构22a并排设置的第二子图案化结构22b构成一组变形单元210，该变形单元210呈工字型结构，其中n为大于或等于1的正整数。图7中虚线框所示的即为一组变形单元210。
在显示装置由展开状态恢复至收缩状态的过程中，卷曲部201可沿箭头所示方向由平坦状态弯折至弯曲状态。在外加拉力的作用下，第一子图案化结构22a、第二子图案化结构22b、第三子图案化结构22c的一部分以及第四子图案化结构22d的一部分沿箭头所示的方向均逐渐发生变形并张开，即第一子图案化结构22a、第二子图案化结构22b、第三子图案化结构22c的一部分以及第四子图案化结构22d的一部分在第二方向x上的宽度逐渐增大，使得图9所示的凹槽21在第二方向x上的宽度得以增大。通过卷曲部201中每一组变形单元210在弯折或卷曲过程中张开变形动作的累积以使卷曲部201具有良好的变形能力，有助于释放弯折或卷曲过程中所产生的应力，从而保证支撑板20能够与柔性显示面板主体10贴合的泡棉胶30保持较优的变形随动性，使得柔性显示面板100在弯折或卷曲过程中，支撑板20的卷曲部201能够与邻近胶层、膜层协调变形，从而降低柔性显示面板100在弯折或收卷过程中存在的膜层脱粘、断裂的风险。
进一步的，如图6所示，在所述第二方向x上，任意相邻所述凹槽21之间的距离B1小于所述凹槽21的宽度B2。
在支撑板20弯折或卷曲的过程中，相邻凹槽21之间的支撑辐条23几乎不发生变形，且由于其在第三方向z上的厚度H2大于凹槽21的底部至支撑板20底部之间的厚度H1，使得支撑辐条23可以维持支撑板20良好的支撑性能，保证柔性显示面板主体10在展开状态下的平整性。但是支撑辐条23的宽度如果过大，则会导致卷曲部201的弯折刚度过大，弯折性能无法满足柔性显示面板的要求，因此限制任意相邻所述凹槽21之间的距离B1小于所述凹槽21的宽度B2，可以平衡支撑板20的弯折性和刚性。
在实际应用中，任意相邻所述凹槽21之间的距离B1也可以大于或等于所述凹槽21的宽度B2，此处不做限制。
图8为本申请实施例提供的变形单元的平面示意图，图9为第一图案化结构的长度与弯折应力和反弹力的关系图，由图9可知，第一图案化结构22在第一方向y上的长度L与支撑板20的弯折应力和反弹应力均呈负相关，第一图案化结构22的长度L越大，支撑板20的弯折应力和反弹应力均越小。
在本申请实施例中，支撑板的原材料的20万次卷曲的疲劳极限应力参考值为1000MPa，支撑板20选材极限断裂强度值为1600MPa，以图10中所示的中间图案化结构221为例，中间图案化结构221在第一方向y上的长度L为6mm，此时支撑板20的应力值小于支撑板20原材料的疲劳极限应力参考值。在实际应用中，中间图案化结构221在第一方向y上的长度L不仅限于上述实施例中的4mm，还可以为3.5mm、4.5mm、5mm、5.5mm或者6mm等，仅需要大于或等于3.5mm且小于或等于6毫米即可。
在本申请实施例中，边缘图案化结构222在第一方向y上的长度应小于中间图案化结构221的长度L。
进一步的，在所述第二方向x上，任意相邻所述第一图案化结构22之间的距离c小于所述第一图案化结构22的宽度d。
图10为第一图案化结构在第二方向x上的宽度与弯折应力和反弹力的关系图，以图8所示的中间图案化结构221为例，中间图案化结构221在第二方向x上的宽度d与支撑板20的弯折应力呈正相关，即中间图案化结构221在第二方向x上的宽度d越大，支撑板20的弯折应力越大，当中间图案化结构221在第二方向x上的宽度d大于180μm时，支撑板20的弯折应力增长的速率也更大，且支撑板20的弯折应力逐渐接近并超出支撑板20的原材料的疲劳极限应力参考值1000MPa。
当中间图案化结构221在第二方向x上的宽度d小于或等于180μm时，中间图案化结构221在第二方向x上的宽度d与支撑板20的反弹力呈正相关，即中间图案化结构221在第二方向x上的宽度d越大，支撑板20的反弹力越大；当中间图案化结构221在第二方向x上的宽度d大于或等于180μm时，中间图案化结构221在第二方向x上的宽度d与支撑板20的反弹力呈负相关，即中间图案化结构221在第二方向x上的宽度d越大，支撑板20的反弹力越小。
图11为本申请实施例提供的相邻第一图案化结构之间的距离与弯折应力和反弹力的关系图，以图8所示的中间图案化结构221为例，相邻中间图案化结构221之间的距离c与支撑板20的弯折应力和反弹力均呈正相关，即相邻中间图案化结构221之间的距离c越大，支撑板20的弯折应力和反弹力均越大。结合图12和图13可知，若任意相邻中间图案化结构22之间的距离c小于中间图案化结构221的宽度d，可以减小支撑板20在卷曲部201的弯折应力，并提高卷曲部201的弯折性能。
进一步的，在所述第二方向上，任意相邻所述第一图案化结构22之间的距离与所述第一图案化结构22的宽度的比值大于或等于0.4且小于或等于0.6。
在本申请实施例中，以图8所示的中间图案化结构221为例，中间图案化结构221在第二方向x上的宽度d为200μm，任意相邻所述中间图案化结构221之间的距离c为100μm，中间图案化结构221在第二方向x上的宽度d与任意相邻所述中间图案化结构221之间的距离c的比值为0.5。
在实际应用中，中间图案化结构221在第二方向x上的宽度d不仅限于上述实施例中的200μm，还可以为150μm、180μm、220μm或者240μm等，仅需要大于或等于150μm且小于或等于240μm。任意相邻中间图案化结构221之间的距离c不仅限于上述实施例中的100μm，还可以为20μm、40μm、60μm、80μm或者120μm等，仅需要大于或等于20μm且小于或等于120μm。任意相邻所述中间图案化结构之间的距离c与所述中间图案化结构的宽度d的比值不仅限于上述实施例中的0.5，还可以为0.4或者0.6等，仅需要大于或等于0.4且小于或等于0.6即可。
在本申请实施例中，边缘图案化结构222在第二方向x上的宽度与中间图案化结构221在第二方向x上的宽度相同。
在本申请实施例中，边缘图案化结构222与相邻第一图案化结构22在第二方向x上的距离与相邻第一图案化结构22之间的距离相同。
在本申请实施例中，支撑板处于弯曲状态时的弯曲半径R为3.6mm。在实际应用中，支撑板20处于弯曲状态时的弯曲半径R不仅限于上述的3.6mm，可以根据实际需求选择支撑板20处于弯曲状态时的曲率半径。在确定柔性显示面板10的弯折半径、支撑板20的厚度以及凹槽21的深度后，可以通过力学仿真分析和实际测试结果确定第一图案化结构22的长度L1、宽度b以及相邻第一图案化结构22之间的距离c，以使支撑板20的卷曲部201具有最优的弯折性能，降低柔性显示面板100发生膜层脱粘或断裂失效的风险。
进一步的，所述支撑板20还包括过渡部203，所述过渡部203连接于所述卷曲部201，所述过渡部203设置有多个第二图案化结构24。
如图2所示，支撑板20具有两个过渡部203，两个过渡部203分别设置于卷曲部201的相对侧，并且连接于所述卷曲部201，非卷曲部202设置于过渡部203远离卷曲部201的一侧，并且与所述过渡部203连接。
在其中一个实施例中，如图4所示，第二图案化结构24可以在第三方向z上贯穿支撑板20。如此，可以减小过渡部203的刚度并提高过渡部的弯折性能。在支撑板20卷曲或弯折的过程中，可以避免过渡部203出现受力过大引起支撑板断裂失效的情况发生，从而提高支撑板20的耐拉性及可靠性。
在其中一个实施例中，第二图案化结构24也可以在第三方向z上伸入支撑板20，但并未贯穿所述支撑板20。如此，可以在一定程度上减小过渡部203的刚度并提高过渡部203的弯折性能。
进一步的，所述第二图案化结构24沿所述第一方向y延伸，在所述第一方向y上，至少两个所述第二图案化24结构并排设置，在所述第二方向x上，任意相邻两个所述第二图案化结构24并排设置或错位设置。
在其中一个实施例中，如图4所示，在第一方向y上，多个第二图案化结构24并排间隔设置并形成一列第二图案化结构24，在第二方向x上，过渡部203设置有多列第二图案化结构24，并且任意相邻两列第二图案化结构24中的任意相邻两个第二图案化结构24并排设置。
在其中一个实施例中，在第一方向y上，多个第二图案化结构24并排间隔设置并形成一列第二图案化结构24，在第二方向x上，过渡部203设置有多列第二图案化结构24，并且任意相邻两列第二图案化结构24中的任意相邻两个第二图案化结构24也可以错位设置。
进一步的，所述第二图案化结构24的密度小于所述第一图案化22结构的密度通过减小过渡部203内第二图案化结构24的密度，可以适当减小过渡部203的刚度，从而避免过渡部203由于局部受力过大引起断裂失效的情况发生。
进一步的，所述第二图案化结构24在所述第一方向y上的长度小于所述第一图案化结构22在所述第一方向y上的长度。由于第二图案化结构24的长度与支撑板20的弯折应力和反弹力均呈负相关，如此，可以使得过渡部203的弯折刚度大于卷曲部201的弯折刚度，从而不仅可以避免过渡部203由于局部受力过大引起断裂失效的情况发生，还可以提高支撑板20的支撑性，以此保证柔性显示面板100在展开状态下的平整性。
进一步的，在所述第二方向x上，任意相邻所述第二图案化结构24之间的距离大于任意相邻所述第一图案化结构22之间的距离。可以理解的是，相邻所述第二图案化结构24之间的距离与过渡部203的刚性呈正相关，相邻所述第二图案化结构24之间的距离越大，过渡部203的刚性也就越大，如此可以在满足过渡部203具备一定形变能力的同时，还可以使得过渡部203的刚性大于卷曲部201的刚性，避免过渡部203由于局部受力过大引起断裂失效的情况发生，还可以保证过渡部203的支撑性。
进一步的，在所述第二方向x上，任意相邻所述第二图案化结构24之间的距离与任意相邻所述第一图案化结构22之间的距离的比值为2。在实际应用中，任意相邻所述第二图案化结构24之间的距离与任意相邻所述第一图案化结构22之间的距离的比值不仅限于上述实施例中的2，也可以为1.2、1.5或者1.8等，仅需要大于或等于1.2且小于或等于2即可。
在本申请实施例中，在第二方向x上，第一图案化结构22的宽度与第二图案化结构24的宽度相同，如此保证第一图案化结构22和第二图案化结构24加工的一致性，从而降低支撑板的加工制作难度。
本申请实施例还提供一种显示装置，如图12所示，图12为本申请实施例提供的显示装置处于收缩状态的结构示意图，所述显示面板包括第一中框200、第二中框300以及如上述实施例所述的柔性显示面板100，柔性显示面板的一部分可以固定于第一中框200上，以用于在收缩状态下实现图像显示的功能，支撑板20的非卷曲部202用于支撑柔性显示面板主体设置于第一中框200上的部分。柔性显示面板100的另一部分可以收缩于第一中框200和第二中框300内部的容置空间内，以此提高显示装置的便携性，支撑板20的卷曲部201用于支撑柔性显示面板100收缩于第一中框200和第二中框300的部分，并用于带动该部分进行滑动。
如图所示，图为本申请实施例提供的显示装置处于展开状态下的结构示意图，第二中框300可滑动地连接于第一中框200，在第二中框300沿第二方向x逐渐远离第一中框200的过程中，柔性显示面板100收藏在第一中框200和第二中框300的容置空间内的部分可以逐渐被展示出来，并且可以与柔性显示面板100未被收藏的部分处于同一平面，以用于在展开状态下，实现面积更大的图像显示的功能。
在显示装置由收缩状态拉伸至展开状态的过程中，支撑板20的卷曲部201可以经由第二中框300的弧形侧壁逐渐滑动至与非卷曲部202处于同一平面，并带动固定于卷曲部201上的柔性显示面板主体10从第一中框200以及第二中框300的容置空间逐渐展示出来。
在本申请实施例中，支撑板20仅设置有一个卷曲部201，显示装置中仅第二中框300可以相对于第一中框200进行单边拉伸，卷曲部201通过第二中框300的弧形侧壁进行滑动。在实际应用中，当显示装置可以进行双边拉伸或者多边拉伸时，支撑板20可以具有两个以及两个以上的卷曲部201。
本申请实施例提供的显示装置可以是移动终端，例如智能手机、平板电脑、笔记本电脑等，显示装置也可以是可穿戴式终端，例如智能手表、智能手环、智能眼镜、增强现实设备等，显示装置还可以是固定终端，例如台式电脑、电视等。
在本申请实施例中，显示装置还可以包括用于使柔性显示面板100处于展平状态或收缩状态的收卷机构、以及用于驱动柔性显示面板实现画面显示功能的电源和驱动集成电路板等电子元器件，收卷结构、电源和驱动集成电路板等可以设置于第一中框200和/或第二中框300的容置空间内。
本申请实施例提供一种柔性显示面板及显示装置，所述显示装置包括柔性显示面板，所述柔性显示面板包括柔性显示面板主体和支撑板，所述支撑板设置于所述柔性显示面板主体的底部，所述支撑板具有卷曲部，通过在卷曲部设置多个沿所述第一方向延伸并沿所述第二方向间隔排列的凹槽，并在凹槽的底部设置多个第一图案化结构，以此在保证卷曲部的刚度的同时，还可以提高卷曲部的弯折性能，从而可以兼顾显示装置中柔性显示面板的可卷曲性和平整性。
综上所述，虽然本申请以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为基准。

Claims (20)

  1. 一种柔性显示面板，包括柔性显示面板主体和设置于所述柔性显示面板主体底部的支撑板，所述柔性显示面板主体具有柔性部，所述支撑板具有与所述柔性部对应的卷曲部，所述卷曲部设置有多个沿所述第一方向延伸并沿所述第二方向间隔排列的凹槽，所述第一方向与所述第二方向不同；
    其中，所述凹槽的底部设置有多个第一图案化结构。
  2. 如权利要求1所述的柔性显示面板，其中，所述第一图案化结构在第三方向上贯穿所述支撑板，所述第三方向垂直于所述第一方向和所述第二方向。
  3. 如权利要求2所述的柔性显示面板，其中，所述第一图案化结构沿所述第一方向延伸；
    在所述第一方向上，至少两个所述第一图案化结构并排设置于同一所述凹槽的底部；
    在所述第二方向上，任意相邻两个所述第一图案化结构错位排布于同一所述凹槽的底部。
  4. 如权利要求3所述的柔性显示面板，其中，所述第一图案化结构包括中间图案化结构和边缘图案化结构，所述边缘图案化结构由所述卷曲部垂直于所述第一方向的边缘向所述卷曲部的中间延伸；
    其中，在所述第一方向上，所述边缘图案化结构与所述中间图案化结构并排设置；
    在所述第二方向上，任意相邻所述边缘图案化结构之间设置有至少一个所述中间图案化结构，所述边缘图案化结构与相邻所述中间图案化结构错位排布。
  5. 如权利要求4所述的柔性显示面板，其中，所述中间图案化结构的截面轮廓呈长条形，所述边缘图案化结构的截面轮廓呈U型。
  6. 如权利要求3所述的柔性显示面板，其中，在所述第二方向上，任意相邻所述凹槽之间的距离小于所述凹槽的宽度。
  7. 如权利要求6所述的柔性显示面板，其中，在所述第二方向上，任意相邻所述凹槽之间的距离与所述凹槽的宽度的比值大于或等于0.2且小于或等于0.5。
  8. 如权利要求3所述的柔性显示面板，其中，在所述第二方向上，任意相邻所述第一图案化结构之间的距离小于所述第一图案化结构的宽度。
  9. 如权利要求8所述的柔性显示面板，其中，在所述第二方向上，任意相邻所述第一图案化结构之间的距离与所述第一图案化结构的宽度的比值大于或等于0.4且小于或等于0.6。
  10. 如权利要求3所述的柔性显示面板，其中，在所述第三方向上，所述凹槽的底部与所述支撑板的底部之间的距离与所述支撑板的厚度的比值大于1/3或等于且小于或等于1/2。
  11. 如权利要求3所述的柔性显示面板，其中，所述支撑板还包括过渡部，所述过渡部连接于所述卷曲部，所述过渡部设置有多个第二图案化结构。
  12. 如权利要求11所述的柔性显示面板，其中，所述第二图案化结构在所述第三方向上贯穿所述支撑板。
  13. 如权利要求11所述的柔性显示面板，其中，所述第二图案化结构沿所述第一方向延伸；
    在所述第一方向上，至少两个所述第二图案化结构并排设置；
    在所述第二方向上，任意相邻两个所述第二图案化结构并排设置。
  14. 如权利要求13所述的柔性显示面板，其中，所述第二图案化结构的密度小于所述第一图案化结构的密度。
  15. 如权利要求13所述的柔性显示面板，其中，所述第二图案化结构在所述第一方向上的长度小于所述第一图案化结构在所述第一方向上的长度。
  16. 如权利要求11所述的柔性显示面板，其中，在所述第二方向上，任意相邻所述第二图案化结构之间的距离大于任意相邻所述第一图案化结构之间的距离。
  17. 如权利要求16所述的柔性显示面板，其中，在所述第二方向上，任意相邻所述第二图案化结构之间的距离与任意相邻所述第一图案化结构之间的距离的比值大于或等于1.2且小于或等于2。
  18. 一种显示装置，包括柔性显示面板，所述柔性显示面板包括柔性显示面板主体和设置于所述柔性显示面板主体底部的支撑板，所述柔性显示面板主体具有柔性部，所述支撑板具有与所述柔性部对应的卷曲部，所述卷曲部设置有多个沿所述第一方向延伸并沿所述第二方向间隔排列的凹槽，所述第一方向与所述第二方向不同；
    其中，所述凹槽的底部设置有多个第一图案化结构。
  19. 如权利要求18所述的显示装置，其中，所述第一图案化结构在第三方向上贯穿所述支撑板，所述第三方向垂直于所述第一方向和所述第二方向。
  20. 如权利要求19所述的显示装置，其中，所述第一图案化结构沿所述第一方向延伸；
    在所述第一方向上，至少两个所述第一图案化结构并排设置于同一所述凹槽的底部；
    在所述第二方向上，任意相邻两个所述第一图案化结构错位排布于同一所述凹槽的底部。
PCT/CN2021/133410 2021-11-22 2021-11-26 柔性显示面板及显示装置 WO2023087366A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/621,326 US20230164931A1 (en) 2021-11-22 2021-11-26 Flexible display panel and display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111383455.2A CN114023196A (zh) 2021-11-22 2021-11-22 柔性显示面板及显示装置
CN202111383455.2 2021-11-22

Publications (1)

Publication Number Publication Date
WO2023087366A1 true WO2023087366A1 (zh) 2023-05-25

Family

ID=80065385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/133410 WO2023087366A1 (zh) 2021-11-22 2021-11-26 柔性显示面板及显示装置

Country Status (3)

Country Link
US (1) US20230164931A1 (zh)
CN (1) CN114023196A (zh)
WO (1) WO2023087366A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230071873A (ko) * 2021-11-16 2023-05-24 삼성디스플레이 주식회사 표시 장치
CN114627767A (zh) * 2022-04-01 2022-06-14 武汉华星光电半导体显示技术有限公司 支撑构件及可折叠显示装置
CN117095618B (zh) * 2023-10-16 2024-03-15 长春希达电子技术有限公司 一种柔性显示面板制备方法及显示装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160343964A1 (en) * 2015-05-19 2016-11-24 Samsung Display Co., Ltd. Flexible display device and manufacturing method thereof
CN110853520A (zh) * 2019-11-28 2020-02-28 京东方科技集团股份有限公司 可折叠支撑件、显示装置
CN211928943U (zh) * 2020-05-29 2020-11-13 京东方科技集团股份有限公司 支撑背板及显示装置
CN112150926A (zh) * 2020-09-25 2020-12-29 武汉华星光电半导体显示技术有限公司 支撑组件及柔性显示模组
CN112863349A (zh) * 2021-01-18 2021-05-28 京东方科技集团股份有限公司 一种柔性衬板、柔性显示面板
CN113129752A (zh) * 2021-04-15 2021-07-16 武汉华星光电半导体显示技术有限公司 支撑板及折叠显示屏
CN113362712A (zh) * 2021-06-15 2021-09-07 武汉华星光电半导体显示技术有限公司 柔性显示模组
CN113658510A (zh) * 2021-08-16 2021-11-16 京东方科技集团股份有限公司 滑卷机构及其制作方法、显示装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102342462B1 (ko) * 2014-12-08 2021-12-27 삼성디스플레이 주식회사 롤러블 표시 장치
US9983424B2 (en) * 2015-06-08 2018-05-29 Lg Display Co., Ltd. Foldable display device
KR102366516B1 (ko) * 2015-08-31 2022-02-22 엘지디스플레이 주식회사 접이식 디스플레이 장치
KR102456889B1 (ko) * 2017-11-01 2022-10-21 엘지전자 주식회사 플렉서블 프레임 및 이를 구비하는 플렉서블 디스플레이 유닛
CN110010001B (zh) * 2017-12-28 2021-06-15 乐金显示有限公司 柔性显示器和包括该柔性显示器的电子装置
CN110792905B (zh) * 2019-11-19 2021-08-27 京东方科技集团股份有限公司 支撑结构及显示装置
CN110992828B (zh) * 2019-11-28 2022-12-20 京东方科技集团股份有限公司 用于柔性显示装置的支撑基板和柔性显示装置
US11048295B1 (en) * 2020-01-10 2021-06-29 Sharp Kabushiki Kaisha Flexible window for foldable display
US11503727B2 (en) * 2020-02-14 2022-11-15 Samsung Display Co., Ltd. Display device
CN112150925A (zh) * 2020-09-24 2020-12-29 武汉华星光电半导体显示技术有限公司 Oled显示装置
TWI765365B (zh) * 2020-09-30 2022-05-21 元太科技工業股份有限公司 顯示裝置與導光板
CN112289750A (zh) * 2020-10-28 2021-01-29 武汉华星光电半导体显示技术有限公司 支撑层及柔性显示面板
CN112991953B (zh) * 2021-03-09 2022-08-05 武汉华星光电半导体显示技术有限公司 支撑板及可折叠显示模组

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160343964A1 (en) * 2015-05-19 2016-11-24 Samsung Display Co., Ltd. Flexible display device and manufacturing method thereof
CN110853520A (zh) * 2019-11-28 2020-02-28 京东方科技集团股份有限公司 可折叠支撑件、显示装置
CN211928943U (zh) * 2020-05-29 2020-11-13 京东方科技集团股份有限公司 支撑背板及显示装置
CN112150926A (zh) * 2020-09-25 2020-12-29 武汉华星光电半导体显示技术有限公司 支撑组件及柔性显示模组
CN112863349A (zh) * 2021-01-18 2021-05-28 京东方科技集团股份有限公司 一种柔性衬板、柔性显示面板
CN113129752A (zh) * 2021-04-15 2021-07-16 武汉华星光电半导体显示技术有限公司 支撑板及折叠显示屏
CN113362712A (zh) * 2021-06-15 2021-09-07 武汉华星光电半导体显示技术有限公司 柔性显示模组
CN113658510A (zh) * 2021-08-16 2021-11-16 京东方科技集团股份有限公司 滑卷机构及其制作方法、显示装置

Also Published As

Publication number Publication date
US20230164931A1 (en) 2023-05-25
CN114023196A (zh) 2022-02-08

Similar Documents

Publication Publication Date Title
WO2023087366A1 (zh) 柔性显示面板及显示装置
CN110853525B (zh) 折叠屏组件及电子设备
US11380856B2 (en) Flexible element, flexible display device and manufacturing method thereof
CN108766247B (zh) 显示面板和显示面板的制作方法
US20200139672A1 (en) Display device and protective cover window
US10680016B2 (en) Flexible display panel, method for fabricating the same, and flexible display device
US9759938B2 (en) Liquid crystal display device
US10440842B2 (en) Flexible electronic device
EP2993660B1 (en) Flexible substrate, display device, and method for bonding electronic device onto flexible substrate
CN110570772A (zh) 柔性显示装置及其制备方法
US11263930B2 (en) Flexible display device and hetero-shaped double-sided adhesive tape
CN114078394B (zh) 显示模组及可折叠显示装置
US11770907B2 (en) Support film layer and flexible display panel
CN113888978B (zh) 柔性显示模组及移动终端
CN113658511B (zh) 一种柔性折叠显示模组及移动终端
US20240029592A1 (en) Electronic device
CN207690424U (zh) 一种曲面显示模组
US20210068273A1 (en) Display device and manufacturing method thereof
CN216249792U (zh) 支撑背板、柔性显示模组及显示装置
TWI485477B (zh) 顯示裝置
WO2023035405A1 (zh) 显示装置
US12013726B2 (en) Support structure for flexible panel, display device and method for assembling flexible module
CN111341205A (zh) 显示装置及其背板
US20230301136A1 (en) Display device
CN115880996A (zh) 显示组件及显示面板

Legal Events

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

Ref document number: 21964511

Country of ref document: EP

Kind code of ref document: A1