WO2024093322A1 - 折叠显示模组及折叠显示装置 - Google Patents
折叠显示模组及折叠显示装置 Download PDFInfo
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- WO2024093322A1 WO2024093322A1 PCT/CN2023/104841 CN2023104841W WO2024093322A1 WO 2024093322 A1 WO2024093322 A1 WO 2024093322A1 CN 2023104841 W CN2023104841 W CN 2023104841W WO 2024093322 A1 WO2024093322 A1 WO 2024093322A1
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- WIPO (PCT)
- Prior art keywords
- hole
- bending
- display module
- hole group
- foldable display
- Prior art date
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Classifications
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- 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
-
- 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
- G06F1/1616—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 folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
- G06F1/1618—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 folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position the display being foldable up to the back of the other housing with a single degree of freedom, e.g. by 360° rotation over the axis defined by the rear edge of the base enclosure
-
- 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
- G06F1/1641—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being formed by a plurality of foldable display components
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
Definitions
- the present application relates to the field of display, and in particular to a foldable display module and a foldable display device.
- foldable display modules have become increasingly popular among consumers.
- foldable screen display modules are used for a long time, obvious creases are easily formed in the bending area of the foldable screen display modules, resulting in obvious unevenness when the screen is off and on.
- the existence of the crease problem has been affecting the further release of the foldable screen display module market.
- the present invention provides a folding display module and a folding display device, which can alleviate the technical problem of creases in the bending area of the current folding screen display module.
- the present invention provides a foldable display module, comprising at least one bending area and a non-bending area connected to the bending area, wherein the bending area is connected between two non-bending areas, the bending area comprises a first bending center line, and the first bending center line is parallel to a first direction.
- the foldable display module comprises:
- a support plate arranged on one side of the display panel
- the support plate includes a plurality of first excavated hole groups and a plurality of second excavated hole groups, the extension direction of each of the first excavated hole groups and each of the second excavated hole groups is parallel to the first direction, a first excavated hole group and a second excavated hole group are alternately arranged along the second direction, the second direction is arranged to form a preset angle with the first direction, the first excavated hole group includes a plurality of first via holes arranged at intervals along the first direction, the second excavated hole group includes a plurality of second via holes arranged at intervals along the first direction, and the length of the first via hole in the first direction is greater than the length of the second via hole in the first direction;
- the first hole group further includes a first gap portion located between two adjacent first via holes, and in the second direction, the second via holes are arranged corresponding to the first gap portion.
- the plurality of first vias in the first hole group include two first-type holes disposed at both ends of the first hole group, and at least one second-type hole disposed between the two first-type holes;
- the first-type hole includes a first portion close to the corresponding end of the first hole group, and a second portion away from the corresponding end of the first hole group;
- the second-type hole includes two third portions, and a fourth portion disposed between the two third portions, and the third portion and the fourth portion are disposed along the first direction; wherein, in the second direction, the maximum width of the first portion is smaller than the minimum width of the second portion, and the minimum width of the third portion is larger than the maximum width of the fourth portion.
- the ratio of the maximum width of the second portion to the minimum width of the first portion is 1.5 to 2;
- a ratio of a maximum width of the third portion to a minimum width of the fourth portion is 1.5 to 2.
- the second via includes a fifth portion corresponding to the first gap portion, and a sixth portion located at both ends of the fifth portion; wherein the fifth portion and the sixth portion are arranged along the first direction, and in the second direction, the minimum width of the fifth portion is greater than the maximum width of the sixth portion.
- the length of the sixth portion is smaller than the length of the corresponding second portion, and the length of the sixth portion is smaller than the length of the corresponding third portion.
- the outer contours of the ends of the second part, the third part, and the sixth part are arc-shaped; the outer contour of the connecting part between the first part and the second part is arc-shaped, the outer contour of the connecting part between the third part and the fourth part is arc-shaped, and the outer contour of the connecting part between the fifth part and the sixth part is arc-shaped.
- the width of the fifth portion of the second via near the center of the second hole group in the second direction is greater than the width of the fifth portion of the second via far from the center of the second hole group in the second direction; in at least one of the second hole groups, the length of the sixth portion of the second via near the center of the second hole group in the first direction is greater than the length of the sixth portion of the second via far from the center of the second hole group in the first direction.
- the second A ratio of the length of the via hole to the length of the fifth portion is 12 to 15.
- a ratio of a maximum width of the fifth portion to a minimum width of the sixth portion is 1.5 to 2.
- the length of the third portion of the second type of holes near the center of the first hole group in the first direction is greater than the length of the third portion of the second type of holes away from the center of the first hole group in the first direction.
- a ratio of a length of the second-type hole to a length of the fourth portion is 1.5 to 2.5.
- the bending zone includes a first bending sub-zone, a first plane sub-zone located outside the first bending sub-zone, and a second bending sub-zone located outside the first plane sub-zone, and the second bending sub-zone is connected to the non-bending zone;
- the first bending center line is located in the first bending sub-zone, and each of the first hole groups and each of the second hole groups are located in the first bending sub-zone;
- the support plate also includes a plurality of third hole groups arranged in the second bending sub-zone, and the extension direction of each of the third hole groups is parallel to the first direction, and the opening depth of the third hole group is less than the thickness of the support plate.
- the bending zone also includes a second bending center line, which is parallel to the first direction and located within the second bending sub-zone; wherein the depth of the third hole group in the direction close to the second bending center line is greater than the depth of the third hole group in the direction away from the second bending center line.
- the distance between two adjacent groups of the third hole groups gradually decreases.
- the display panel includes a panel body, a polarizing layer located near a light emitting side of the panel body, a window cover located on a side of the polarizing layer away from the panel body, and a backplane located away from a light emitting side of the panel body;
- the support plate is located away from the light emitting side of the panel body.
- the present invention further provides a folding display device, comprising a folding display module, wherein the folding display module comprises at least one bending area and a non-bending area connected to the bending area, wherein the bending area is connected between two non-bending areas, wherein the bending area comprises a first bending center line, wherein the first bending center line is parallel to a first direction, and wherein the folding display module comprises:
- a support plate arranged on one side of the display panel
- the support plate includes a plurality of first excavated hole groups and a plurality of second excavated hole groups, the extension direction of each of the first excavated hole groups and each of the second excavated hole groups is parallel to the first direction, a first excavated hole group and a second excavated hole group are alternately arranged along the second direction, the second direction is arranged to form a preset angle with the first direction, the first excavated hole group includes a plurality of first via holes arranged at intervals along the first direction, the second excavated hole group includes a plurality of second via holes arranged at intervals along the first direction, and the length of the first via hole in the first direction is greater than the length of the second via hole in the first direction;
- the first hole group further includes a first gap portion located between two adjacent first via holes, and in the second direction, the second via holes are arranged corresponding to the first gap portion.
- the plurality of first via holes in the first hole group include two first-type holes disposed at two ends of the first hole group, and at least one second-type hole disposed between the two first-type holes;
- the first type of hole includes a first portion close to the corresponding end of the first hole group and a second portion away from the corresponding end of the first hole group;
- the second type of hole includes two third parts and a fourth part arranged between the two third parts, and the third part and the fourth part are arranged along the first direction;
- the maximum width of the first portion is smaller than the minimum width of the second portion, and the minimum width of the third portion is larger than the maximum width of the fourth portion.
- the second via hole includes a fifth portion corresponding to the first gap portion, and sixth portions located at both ends of the fifth portion;
- the fifth portion and the sixth portion are arranged along the first direction, and in the second direction, the minimum width of the fifth portion is greater than the maximum width of the sixth portion.
- the length of the third portion of the second type of holes near the center of the first hole group in the first direction is greater than the length of the third portion of the second type of holes away from the center of the first hole group in the first direction.
- the bending region includes a first bending sub-region, a first plane sub-region located outside the first bending sub-region, and a second bending sub-region located outside the first plane sub-region, and the second bending sub-region is connected to the non-bending region;
- the first bending center line is located in the first bending sub-area, and each of the first hole groups and each of the second hole groups are located in the first bending sub-area;
- the support plate further includes a plurality of third hole groups arranged in the second bending sub-area, the extension direction of each of the third hole groups is parallel to the first direction, and the opening depth of the third hole groups is less than the thickness of the support plate.
- the present invention arranges vias of different lengths in the bending zone, alternately arranges long via groups and short via groups, and at the same time arranges the second vias corresponding to the first gap portion, and utilizes the short vias to further reduce the bending stress of the first gap portion, so that the bending stress is released more evenly.
- the short vias reduce the removal of support plate material and improve the supporting performance of the support plate.
- the alternating long and short vias increase the complexity of the via arrangement and make the stress release path more diversified, thereby balancing the torsional stress and supporting rigidity of the support plate, so that the bending stress is released more evenly.
- the bending arc segment of the teardrop-shaped bending shape of the folding display module is closer to a circular shape, further reducing the force and making the force more uniform, so as to reduce the crease of the folding display module.
- FIG1 is a schematic structural diagram of a foldable display module provided by an embodiment of the present invention.
- FIG2 is a schematic structural diagram of a support plate of a foldable display module provided in an embodiment of the present invention.
- FIG3 is a partial enlarged view of area A of FIG2 ;
- FIG4 is a partial enlarged view of area B of FIG3 ;
- FIG5 is a partial enlarged view of the second type of holes of the foldable display module provided by an embodiment of the present invention.
- FIG6 is a partial enlarged view of a second via hole of a foldable display module provided in an embodiment of the present invention.
- FIG. 7 is another schematic structural diagram of a support plate of a foldable display module provided in an embodiment of the present invention.
- FIG8 is a schematic structural diagram of FIG7 along the C1-C2 section
- FIG9 is another schematic structural diagram of a foldable display module provided by an embodiment of the present invention.
- FIG10 is a simulation schematic diagram of a foldable display module provided in an embodiment of the present invention.
- FIG11 is a schematic diagram of a folding simulation comparison of a folding display module provided by an embodiment of the present invention.
- FIG12 is a comparative experimental representation diagram of a foldable display module provided by an embodiment of the present invention.
- FIG13 is a schematic diagram of the structure of a foldable display device provided in an embodiment of the present invention.
- FIG. 14 is a schematic diagram of the exploded structure of the foldable display device provided in an embodiment of the present invention.
- the present application provides a foldable display module and a foldable display device. To make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.
- the embodiments of the present application provide a foldable display module and a foldable display device.
- the following are detailed descriptions of each. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.
- foldable display modules have become increasingly popular among consumers.
- foldable screen display modules are used for a long time, obvious creases are easily formed in the bending area of the foldable screen display modules, resulting in obvious unevenness when the screen is off and on.
- the existence of the crease problem has been affecting the further release of the foldable screen display module market.
- an embodiment of the present invention provides a foldable display module 100, comprising at least one bending region 110 and a non-bending region 120 connected to the bending region 110, wherein the bending region 110 is connected between two non-bending regions 120, and the bending region 110 comprises a first bending center line 101, wherein the first bending center line 101 is parallel to a first direction, and the foldable display module 100 comprises:
- a support plate 300 is disposed on one side of the display panel 200;
- the support plate 300 includes a plurality of first hole groups 400 and a plurality of second hole groups 500, the extension direction of each of the first hole groups 400 and each of the second hole groups 500 is parallel to the first direction, a first hole group 400 and a second hole group 500 are alternately arranged along the second direction, the second direction is arranged to form a preset angle with the first direction, the first hole group 400 includes a plurality of first via holes 410 arranged at intervals along the first direction, the second hole group 500 includes a plurality of second via holes 510 arranged at intervals along the first direction, and the length of the first via holes 410 in the first direction is greater than the length of the second via holes 510 in the first direction;
- the first hole group 400 further includes a first gap portion 420 located between two adjacent first via holes 410. In the second direction, the second via hole 510 corresponds to the first gap portion 420. set up.
- the present invention arranges via holes of different lengths in the bending zone, alternately arranges long via hole groups and short via hole groups, and arranges the second via hole in correspondence with the first gap portion, and utilizes the short via hole to further reduce the bending stress of the first gap portion, so that the bending stress is released more evenly.
- the short via hole reduces the removal of support plate material and improves the supporting performance of the support plate.
- the alternating long and short via holes increases the complexity of the via hole arrangement and makes the stress release path more diversified, thereby balancing the torsional stress and supporting rigidity of the support plate, so that the bending stress is released more evenly.
- the bending arc segment of the water drop-shaped bending shape of the folding display module is closer to a circular shape, further reducing the force and making the force more uniform, so as to reduce the crease of the folding display module.
- the folding display module 100 includes at least one bending area 110 and a non-bending area 120 connected to the bending area 110, the bending area 110 is connected between two non-bending areas 120, and the bending area 110 includes a first bending center line 101, and the first bending center line 101 is parallel to the first direction.
- the foldable display module 100 includes a display panel 200 and a support plate 300 disposed on one side of the display panel 200, the support plate 300 includes a plurality of first hole groups 400 and a plurality of second hole groups 500, the extension direction of each of the first hole groups 400 and each of the second hole groups 500 is parallel to the first direction, a first hole group 400 and a second hole group 500 are alternately arranged along the second direction, the second direction is arranged to form a preset angle with the first direction, the first hole group 400 includes a plurality of first via holes 410 arranged at intervals along the first direction, the second hole group 500 includes a plurality of second via holes 510 arranged at intervals along the first direction, the length of the first via hole 410 in the first direction is greater than the length of the second via hole 510 in the first direction.
- the first hole group 400 also includes a first gap portion 420 located between two adjacent first via holes 410, and in the second direction, the second via hole 510 is arranged corresponding to the first gap portion 420.
- the first hole group 400 includes a plurality of first via holes 410 extending along the X-axis direction.
- the first gap portion 420 is the solid material of the support plate 300, that is, the non-hole-dug portion.
- a second hole group 500 is arranged between two adjacent first hole groups 400 , and the second hole group 500 includes a plurality of second via holes 510 extending along the X-axis direction.
- the second via holes 510 are arranged corresponding to the first gap portions 420 .
- a second via hole 510 corresponding to the first gap is set next to the first via hole 410 to increase the complexity of the via arrangement and make the stress release path more diversified.
- the bending arc segment of the teardrop-shaped bending shape of the folding display module 100 is closer to a circular shape, further reducing the force and making the force more uniform, so as to reduce the crease of the folding display module 100.
- the plurality of first vias 410 in the first hole group 400 include two first-type holes 431 disposed at both ends of the first hole group 400, and at least one second-type hole 432 disposed between the two first-type holes 431;
- the first-type hole 431 includes a first portion 610 close to the corresponding end of the first hole group 400, and a second portion 620 away from the corresponding end of the first hole group 400;
- the second-type hole 432 includes two third portions 630, and a fourth portion 640 disposed between the two third portions 630, and the third portion 630 and the fourth portion 640 are disposed along the first direction; wherein, in the second direction, the maximum width of the first portion 610 is smaller than the minimum width of the second portion 620, and the minimum width of the third portion 630 is larger than the maximum width of the fourth portion 640.
- the widths of the first portion 610 and the fourth portion 640 are reduced to improve the supporting shaping performance of the supporting material around the first portion 610 and the fourth portion 640, and ensure that the support plate 300 is not easily deformed and collapsed during the folding process; the widths of the third portion 630 and the second portion 620 are increased to reduce the torsional stress during the folding process, thereby balancing the uniform torsional stress and the supporting rigidity, further improving the complexity of the via hole, so that the material hole profile of the support plate 300 can cover more stress release directions, so that the bending stress can be released in more directions, increasing the release path of the bending stress, and facilitating the uniform release of the bending stress.
- the bending arc segment of the teardrop-shaped bending shape of the folding display module 100 is closer to a circular shape, further reducing the force and making the force more uniform, so as to reduce the crease of the folding display module 100.
- the second via hole 510 includes The fifth part 650 corresponding to the gap portion 420 and the sixth part 660 located at both ends of the fifth part 650; wherein the fifth part 650 and the sixth part 660 are arranged along the first direction, and in the second direction, the minimum width of the fifth part 650 is greater than the maximum width of the sixth part 660.
- the width of the fifth part 650 corresponding to the first gap part 420 is increased, thereby reducing the supporting material around the first gap part 420 to reduce the torsional stress during the folding process.
- the path of the supporting material is a carrier for stress release.
- the complexity of the contour of the supporting material between the fifth part 650 and the second part 620 and the third part 630 is increased, so that the material hole contour of the support plate 300 can cover more stress release directions, and the bending stress can be released in more directions, thereby enhancing the diversity of the stress release path and releasing the bending stress more evenly.
- the bending arc segment of the teardrop-shaped bending shape of the folding display module 100 is closer to a circular shape, further reducing the force and making the force more uniform, so as to reduce the crease of the folding display module 100.
- an experimental group and a comparative group are set up, and folding experiments are performed under different experimental conditions of the support plate 300.
- the thickness of the support plate 300 of the comparative group and the experimental group is 0.2 mm.
- the condition of the control group is a support plate 300 with an array of uniform openings; the condition of the experimental group is that in the second direction, the maximum width of the first part 610 is smaller than the minimum width of the second part 620, the minimum width of the third part 630 is larger than the maximum width of the fourth part 640, and in the second direction, the minimum width of the fifth part 650 is larger than the maximum width of the sixth part 660.
- Figures 9 to 12 simulation diagrams of the folding display module 100 in the final folded state and stress measurements.
- the horizontal axis represents the path distance between the measurement point and the first bending centerline 101, in millimeters; the vertical axis represents the stress magnitude, in megapascals.
- the use of the hole-digging structural morphology design in the present application can optimize the shape of the water droplet, that is, after the module is folded, the first bending sub-area 111 of the curved arc area of the water droplet can be closer to a circular shape from an elliptical shape, thereby reducing the curvature in the middle of the water droplet and increasing the radius, thereby improving the force on the module.
- the overall force is large due to the small curvature of the middle bending zone 110, and the bending shape of the water droplet on the screen cannot be adjusted; in the experimental group, the shape of the water droplet can be adjusted to increase the curvature of the middle bending zone 110, and the first bending sub-zone 111 of the water droplet bending arc zone is closer to a circular arc, which can disperse the stress, thereby significantly reducing the force on the window cover 230 of the membrane layer in the module, which is beneficial to reducing creases.
- the sixth portion 660 in the first direction, is smaller than the length of the corresponding second portion 620 , and the length of the sixth portion 660 is smaller than the length of the corresponding third portion 630 .
- the main function of the first part 610 and the fourth part 640 is to provide better rigidity for the support plate 300 and ensure that the support plate 300 is not easily deformed and collapsed during the folding process.
- the main function of the second part 620 and the third part 630 is to reduce torsional stress and improve the uniformity of stress release.
- the sixth part 660 should not extend to the first part 610 or the fourth part 640, that is, in the second direction, the second via hole 510 is not set between two adjacent first parts 610, and the second via hole 510 is not set between two adjacent fourth parts 640, so as to reduce the through-hole rate of the bending zone 110 and make the bending zone 110 have higher support, so as to ensure the rigidity of the support plate 300, avoid deformation and collapse of the support plate 300 during the folding process, and reduce the crease of the folding display module 100.
- the outer contours of the ends of the second part 620, the ends of the third part 630, and the ends of the sixth part 660 are arc-shaped; the outer contour of the connecting part between the first part 610 and the second part 620 is an arc-shaped, the outer contour of the connecting part between the third part 630 and the fourth part 640 is an arc-shaped, and the outer contour of the connecting part between the fifth part 650 and the sixth part 660 is an arc-shaped.
- the arc shape is conducive to the uniform release of stress.
- the area of the arc shape is larger than that of the straight-edge shape, which can increase the area of the hole, further reduce the torsional stress, reduce the risk of stress concentration, and improve the uniformity of stress release.
- the arc shape can be circular or elliptical, which is only used as an example here without specific limitation.
- the outer contour of the connecting portion between the first portion 610 and the second portion 620 is an arc
- the outer contour of the connecting portion between the third portion 630 and the fourth portion 640 is an arc
- the outer contour of the connecting portion between the fifth portion 650 and the sixth portion 660 is an arc.
- the area of the arc is larger than that of the straight-edge figure, which can increase the area of the hole, further reduce the torsional stress, reduce the risk of stress concentration, and improve the uniformity of stress release.
- the arc can be any one of a circle, an ellipse, a quadratic curve, and a parabola, or a combination of two or more thereof, which is only used as an example and is not specifically limited.
- the arc can be composed of two elliptical arcs r1 and r2.
- the ratio of the maximum width of the second portion 620 to the minimum width of the first portion 610 is 1.5 to 2. This ratio being too large or too small will lead to an imbalance between stress release performance and support rigidity, affecting the support The performance parameters of the support plate 300 result in obvious creases.
- the ratio of the maximum width of the third portion 630 to the minimum width of the fourth portion 640 is 1.5 to 2. This ratio being too large or too small will lead to an imbalance between stress release performance and support rigidity, affecting the performance parameters of the support plate 300 and causing obvious creases.
- the ratio of the maximum width of the fifth portion 650 to the minimum width of the sixth portion 660 is 1.5 to 2. This ratio being too large or too small will lead to an imbalance between stress release performance and support rigidity, affect the performance parameters of the support plate 300, and cause obvious creases.
- the width of the first portion 610 is 0.1 mm to 0.15 mm, and the width a3 of the fourth portion 640 is 0.1 mm to 0.15 mm. This numerical range can effectively release stress and provide strong support rigidity.
- the width of the first portion 610 is similar to the width of the fourth portion 640, and the drawing is not repeated.
- the ratio of the length of the second type hole 432 to the length of the second via hole 510 is 2 to 5. This ratio being too large or too small will lead to an imbalance between stress release performance and support rigidity, affecting the performance parameters of the support plate 300 and causing obvious creases.
- the outer contours of the end of the second portion 620, the end of the third portion 630, and the end of the sixth portion 660 are semi-elliptical, wherein the ratio of the major semi-axis a2 to the minor semi-axis a1 of the semi-ellipse is 2 to 3. If the ratio is too large or too small, it will lead to an imbalance between the stress release performance and the support rigidity, affect the performance parameters of the support plate 300, and cause obvious folds.
- the ratio of the length L1 of the second type hole 432 to the length L2 of the fourth portion 640 is 1.5 to 2.5.
- the relationship between the hole length and stress is a design parameter related to the material of the support plate 300.
- the material of the support plate 300 is SUS stainless steel, and its yield strength is about 1600MPa. Since the fatigue strength is usually about 0.5 times the yield strength of the material, the design is based on 800MPa fatigue strength.
- the labor strength is taken as the design reference stress, and the length ratio is determined by simulation, as shown in Table 1 below, which is a simulation comparison table between the ratio of L1 to L2 and stress.
- the rebound force can reflect the support to a certain extent. Its judgment mainly considers two aspects: fatigue stress intensity and the elastic force of the module after closing. In theory, the greater the rebound force, the better the support, the less likely it is to bend, and the greater the stress. However, if the rebound force is too large, it will not be easy to close after the screen is folded. Therefore, it is necessary to add magnet adsorption to the middle frame of the folding display device. The size of the magnet is directly related to the rebound force. Generally, the limit force of the magnet is about 4N. Therefore, 4N is used as the design benchmark rebound force as a reference during design, and the length ratio is determined by simulation, as shown in Table 2 below, which is a simulation comparison table between the ratio of L1 to L2 and the rebound force.
- the L1/L2 ratio is selected to be 1.5 to 2.5 to balance the support rigidity and bendability of the support plate 300 while meeting the product shipping standards.
- a ratio of a length L4 of the second via hole 510 to a length L3 of the fifth portion 650 is 12 to 15.
- the restriction rules please refer to the limitation rules of the L1/L2 ratio.
- the simulation results between the L4/L3 ratio and stress please refer to Table 3.
- the simulation results between the L4/L3 ratio and rebound force please refer to Table 4.
- the ratio of L4/L3 is selected to be 12 to 15, so as to balance the supporting rigidity and bending property of the supporting plate 300 and meet the shipping standard of the product.
- the ratio of the length of the first type of aperture 431 to the length of the second type of aperture 432 is 1/2 to 2/3.
- the width of the fifth portion 650 of the second via 510 near the center of the second hole group 500 in the second direction is greater than the width of the fifth portion 650 of the second via 510 away from the center of the second hole group 500 in the second direction; in at least one of the second hole groups 500, the length of the sixth portion 660 of the second via 510 near the center of the second hole group 500 in the first direction is greater than the length of the sixth portion 660 of the second via 510 away from the center of the second hole group 500 in the first direction.
- the complexity of the contour of the support plate between the fifth part 650 and the third part 630 is increased, so that the material hole digging contour of the support plate 300 can cover more stress release directions, so that the bending stress can be released in more directions, the diversity of the stress release path is enhanced, and the bending stress is released more evenly.
- the bending arc segment of the teardrop-shaped bending shape of the folding display module 100 is closer to a circular shape, further reducing the force and making the force more uniform, so as to reduce the crease of the folding display module 100.
- the length of the third portion 630 of the second type of hole 432 near the center of the first hole group 400 in the first direction is The third portion 630 is greater than the length of the second type hole 432 away from the center of the first hole group 400 in the first direction.
- the bending zone 110 includes a first bending sub-zone 111, a first plane sub-zone 112 located outside the first bending sub-zone 111, and a second bending sub-zone 113 located outside the first plane sub-zone 112, and the second bending sub-zone 113 is connected to the non-bending zone 120;
- the first bending center line 101 is located in the first bending sub-zone 111, and each of the first hole groups 400 and each of the second hole groups 500 are located in the first bending sub-zone 111;
- the support plate 300 also includes a plurality of third hole groups 700 arranged in the second bending sub-zone 113, and the extension direction of each of the third hole groups 700 is parallel to the first direction, and the opening depth of the third hole group 700 is less than the thickness of the support plate 300.
- the shape of the bending area 110 is a teardrop shape.
- the top of the teardrop shape also has an arc segment R2 corresponding to the second bending sub-area 113 to assist folding and release folding stress.
- the bending arc in the second bending sub-area 113 is small and does not require the setting of vias. Therefore, the third hole group 700 is a semi-etched hole to provide enhanced bending performance while retaining more rigid support performance.
- the bending zone 110 further includes a second bending center line 102, the second bending center line 102 is parallel to the first direction, and the second bending center line 102 is located in the second bending sub-zone 113; wherein, in the direction approaching the second bending center line 102, the depth of the third hole group 700 gradually increases.
- the distance between two adjacent groups of the third hole groups 700 gradually decreases.
- the ratio of the hole depth of the third hole group 700 to the thickness of the support plate 300 is 1/2 to 2/3. If the ratio is too large or too small, it will affect the balance between the bending performance and the supporting performance, affect the performance parameters of the support plate 300, and cause obvious creases.
- the ratio of the width of the third hole group 700 to the distance between two adjacent hole groups is 1 to 5. If this ratio is too large or too small, it will affect the balance between the bending performance and the supporting performance, affect the performance parameters of the support plate 300, and cause obvious creases.
- the width of the holes of the third hole group 700 is 0.25 mm to 0.5 mm, which can effectively release stress and provide strong support rigidity.
- the display panel 200 includes a panel body 210, a polarizing layer 220 located near the light emitting side of the panel body 210, a window cover 230 located on the side of the polarizing layer 220 away from the panel body 210, and a backplane 240 located away from the light emitting side of the panel body 210.
- the polarizing layer 220 and the window cover 230 are represented by a combined film layer 250.
- the support plate 300 is located away from the light emitting side of the panel body 210 .
- the material of the support plate 300 is any one of steel sheet, titanium alloy, carbon fiber, and polymer composite material, which is only used as an example and is not specifically limited.
- the thickness of the support plate 300 is 0.1 mm to 0.2 mm to balance the hole digging rate and the supporting performance.
- the present invention arranges via holes of different lengths in the bending zone, alternately arranges long via hole groups and short via hole groups, and arranges the second via hole corresponding to the first gap portion, and utilizes the short via hole to further reduce the bending stress of the first gap portion, so that the bending stress is released more evenly.
- the short via hole reduces the removal of support plate material, improves the supporting performance of the support plate, thereby balancing the torsional stress and supporting rigidity of the support plate, so that the bending stress is released more evenly.
- the bending arc segment of the teardrop-shaped bending shape of the folding display module is closer to a circular shape, further reducing the force and making the force more uniform, so as to reduce the crease of the folding display module.
- An embodiment of the present invention further provides a foldable display device 10 , including any of the above-mentioned foldable display modules 100 .
- the foldable display device 10 further includes a device body 20 , and the foldable display module 100 is integrated with the device body 20 .
- foldable display module 100 The specific structure of the foldable display module 100 may be referred to any of the above-mentioned embodiments and drawings of the foldable display module 100 , and will not be described in detail here.
- the device body 20 may include a middle frame, frame glue, external components, hinges, etc.
- the folding display device 10 may be a display terminal such as a mobile phone, a tablet, a television, etc., which is not limited here.
- the support plate 300 corresponding to the first plane sub-area 112 can be used for gluing connection with the floating plate structure of the hinge.
- the foldable display device 10 further includes a corresponding adhesive layer 30 .
- the embodiment of the present invention discloses a folding display module and a folding display device;
- the folding display module includes a display panel and a support plate, the support plate includes a plurality of first hole groups and a plurality of second hole groups, a first hole group and a second hole group are alternately arranged along a second direction, the first hole group includes a plurality of first via holes, the second hole group includes a plurality of second via holes, the length of the first via hole in the first direction is greater than the length of the second via hole in the first direction, and the second via hole is arranged corresponding to the first gap portion between two adjacent first via holes; the present invention arranges long and short via holes of different lengths and are alternately arranged in the bending zone, and uses short via holes to reduce the bending stress of the first gap portion.
- the short via holes reduce the removal of support plate material, improve the supporting performance of the support plate, increase the complexity of the via hole arrangement, make the stress release path more diversified, balance the torsional stress and supporting rigidity of the support plate, and make the bending arc section closer to a circular shape when folded.
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Abstract
本发明实施例公开了一种折叠显示模组及折叠显示装置；该折叠显示模组包括显示面板及支撑板，支撑板包括沿第二方向交替设置的第一挖孔组和第二挖孔组，第一挖孔组包括多个第一过孔，第二挖孔组包括多个第二过孔，在第一方向上，第一过孔的长度大于第二过孔的长度，第二过孔对应设置于相邻第一过孔之间的第一间隙部。
Description
本申请涉及显示领域，尤其涉及一种折叠显示模组及折叠显示装置。
近些年，折叠显示模组越来越受到消费者喜爱，然而随着折叠屏显示模组长时间使用，折叠屏显示模组的弯折区内容易形成较为明显的折痕，导致在熄屏和显示状态下出现明显凹凸不平的现象，折痕问题的存在，一直影响着折叠屏显示模组市场进一步释放。
因此，亟需一种折叠显示模组及折叠显示装置以解决上述技术问题。
本发明提供一种折叠显示模组及折叠显示装置，可以缓解目前折叠屏显示模组的弯折区有折痕的技术问题。
为解决上述问题，本申请提供的技术方案如下：
本发明提供一种折叠显示模组，包括至少一个弯折区和与所述弯折区连接的非弯折区，所述弯折区连接于两个所述非弯折区之间，所述弯折区包括第一弯折中心线，所述第一弯折中心线与第一方向平行，所述折叠显示模组包括：
显示面板；
支撑板，设置于所述显示面板的一侧；
其中，所述支撑板包括多个第一挖孔组和多个第二挖孔组，各所述第一挖孔组和各所述第二挖孔组的延伸方向均与所述第一方向平行，一所述第一挖孔组与一所述第二挖孔组沿第二方向交替设置，所述第二方向设置成与所述第一方向呈一预设夹角，所述第一挖孔组包括沿所述第一方向间隔设置的多个第一过孔，所述第二挖孔组包括沿所述第一方向间隔设置的多个第二过孔，所述第一过孔在所述第一方向上的长度大于所述第二过孔在所述第一方向上的长度；
所述第一挖孔组还包括位于相邻两个所述第一过孔之间的第一间隙部，在所述第二方向上，所述第二过孔与所述第一间隙部对应设置。
在一些实施例中，所述第一挖孔组中的多个所述第一过孔包括设置于所述第一挖孔组两端的两个第一类孔、及设置于两个所述第一类孔之间的至少一第二类孔；所述第一类孔包括靠近所述第一挖孔组的对应端部的第一部分、及远离所述第一挖孔组的对应端部的第二部分；所述第二类孔包括两个第三部分、及设置于两个所述第三部分之间的第四部分，所述第三部分和所述第四部分沿所述第一方向设置；其中，在所述第二方向上，所述第一部分的最大宽度小于所述第二部分的最小宽度，所述第三部分的最小宽度大于所述第四部分的最大宽度。
在一些实施例中，在同一所述第一类孔中，在所述第二方向上，所述第二部分的最大宽度与所述第一部分的最小宽度的比值为1.5至2；
在同一所述第二类孔中，在所述第二方向上，所述第三部分的最大宽度与所述第四部分的最小宽度的比值为1.5至2。
在一些实施例中，所述第二过孔包括与所述第一间隙部对应的第五部分、及位于所述第五部分两端的第六部分；其中，所述第五部分及所述第六部分沿所述第一方向设置，在所述第二方向上，所述第五部分的最小宽度大于所述第六部分的最大宽度。
在一些实施例中，在所述第一方向上，所述第六部分的长度小于对应所述第二部分的长度，所述第六部分的长度小于对应所述第三部分的长度。
在一些实施例中，所述第二部分的端部、所述第三部分的端部、及所述第六部分的端部的外轮廓为弧形；所述第一部分与所述第二部分之间的连接部分的外轮廓为弧形，所述第三部分与所述第四部分之间的连接部分的外轮廓为弧形，所述第五部分与所述第六部分之间的连接部分的外轮廓为弧形。
在一些实施例中，在至少一所述第二挖孔组中，靠近所述第二挖孔组的中心的所述第二过孔的所述第五部分在所述第二方向上的宽度，大于远离所述第二挖孔组的中心的所述第二过孔的所述第五部分在所述第二方向上的宽度；在至少一所述第二挖孔组中，靠近所述第二挖孔组的中心的所述第二过孔的所述第六部分在所述第一方向上的长度，大于远离所述第二挖孔组的中心的所述第二过孔的所述第六部分在所述第一方向上的长度。
在一些实施例中，在同一所述第二过孔中，在所述第一方向上，所述第二
过孔的长度与所述第五部分的长度的比值为12至15。
在一些实施例中，在同一第二过孔中，在所述第二方向上，所述第五部分的最大宽度与所述第六部分的最小宽度的比值为1.5至2。
在一些实施例中，在至少一所述第一挖孔组中，靠近所述第一挖孔组的中心的所述第二类孔的所述第三部分在所述第一方向上的长度，大于远离所述第一挖孔组的中心的所述第二类孔的所述第三部分在所述第一方向上的长度。
在一些实施例中，在同一所述第二类孔中，在所述第一方向上，所述第二类孔的长度与所述第四部分的长度的比值为1.5至2.5。
在一些实施例中，所述弯折区包括第一弯折子区、位于所述第一弯折子区外围的第一平面子区、及位于所述第一平面子区外围的第二弯折子区，所述第二弯折子区与所述非弯折区连接；所述第一弯折中心线位于所述第一弯折子区内，各所述第一挖孔组和各所述第二挖孔组位于所述第一弯折子区内；其中，所述支撑板还包括设置于所述第二弯折子区内的多个第三挖孔组，各所述第三挖孔组的延伸方向均与所述第一方向平行，所述第三挖孔组的开孔深度小于所述支撑板的厚度。
在一些实施例中，所述弯折区还包括第二弯折中心线，所述第二弯折中心线与第一方向平行，所述第二弯折中心线位于所述第二弯折子区内；其中，靠近所述第二弯折中心线的方向上的所述第三挖孔组的深度大于远离所述第二弯折中心线的方向上的所述第三挖孔组的深度。
在一些实施例中，在靠近所述第二弯折中心线的方向上，相邻两组所述第三挖孔组之间的距离逐渐减小。
在一些实施例中，所述显示面板包括面板主体、位于靠近所述面板主体的出光一侧的偏光层、位于所述偏光层远离所述面板主体一侧的视窗盖板、及位于远离所述面板主体的出光一侧的背板；
其中，所述支撑板位于远离所述面板主体的出光一侧。
本发明还提供一种折叠显示装置，包括折叠显示模组，所述折叠显示模组包括至少一个弯折区和与所述弯折区连接的非弯折区，所述弯折区连接于两个所述非弯折区之间，所述弯折区包括第一弯折中心线，所述第一弯折中心线与第一方向平行，所述折叠显示模组包括：
显示面板；
支撑板，设置于所述显示面板的一侧；
其中，所述支撑板包括多个第一挖孔组和多个第二挖孔组，各所述第一挖孔组和各所述第二挖孔组的延伸方向均与所述第一方向平行，一所述第一挖孔组与一所述第二挖孔组沿第二方向交替设置，所述第二方向设置成与所述第一方向呈一预设夹角，所述第一挖孔组包括沿所述第一方向间隔设置的多个第一过孔，所述第二挖孔组包括沿所述第一方向间隔设置的多个第二过孔，所述第一过孔在所述第一方向上的长度大于所述第二过孔在所述第一方向上的长度；
所述第一挖孔组还包括位于相邻两个所述第一过孔之间的第一间隙部，在所述第二方向上，所述第二过孔与所述第一间隙部对应设置。
在一些实施例中，所述第一挖孔组中的多个所述第一过孔包括设置于所述第一挖孔组两端的两个第一类孔、及设置于两个所述第一类孔之间的至少一第二类孔；
所述第一类孔包括靠近所述第一挖孔组的对应端部的第一部分、及远离所述第一挖孔组的对应端部的第二部分；
所述第二类孔包括两个第三部分、及设置于两个所述第三部分之间的第四部分，所述第三部分和所述第四部分沿所述第一方向设置；
其中，在所述第二方向上，所述第一部分的最大宽度小于所述第二部分的最小宽度，所述第三部分的最小宽度大于所述第四部分的最大宽度。
在一些实施例中，所述第二过孔包括与所述第一间隙部对应的第五部分、及位于所述第五部分两端的第六部分；
其中，所述第五部分及所述第六部分沿所述第一方向设置，在所述第二方向上，所述第五部分的最小宽度大于所述第六部分的最大宽度。
在一些实施例中，在至少一所述第一挖孔组中，靠近所述第一挖孔组的中心的所述第二类孔的所述第三部分在所述第一方向上的长度，大于远离所述第一挖孔组的中心的所述第二类孔的所述第三部分在所述第一方向上的长度。
在一些实施例中，所述弯折区包括第一弯折子区、位于所述第一弯折子区外围的第一平面子区、及位于所述第一平面子区外围的第二弯折子区，所述第二弯折子区与所述非弯折区连接；
所述第一弯折中心线位于所述第一弯折子区内，各所述第一挖孔组和各所述第二挖孔组位于所述第一弯折子区内；
其中，所述支撑板还包括设置于所述第二弯折子区内的多个第三挖孔组，各所述第三挖孔组的延伸方向均与所述第一方向平行，所述第三挖孔组的开孔深度小于所述支撑板的厚度。
本发明有益效果：本发明通过在弯折区设置长度不同的过孔，长过孔组与短过孔组交替设置，同时将第二过孔与第一间隙部对应设置，利用短过孔进一步减小第一间隙部的弯折应力，使弯折应力更均匀释放，同时短过孔减少了支撑板材料的去除，提高了支撑板的支撑性能，交替设置的长短过孔，增大了过孔排布复杂程度，使应力释放路径更加多样化，从而平衡了支撑板的扭转应力及支撑刚性，使弯折应力更均匀释放，在折叠状态下，使折叠显示模组的水滴型弯折形态的弯折弧形段更趋近圆形态，进一步减小受力以及使受力更均匀，以减轻折叠显示模组的折痕。
图1是本发明实施例提供的折叠显示模组的一种结构示意图；
图2是本发明实施例提供的折叠显示模组的支撑板的一种结构示意图；
图3是图2的区域A的局部放大图；
图4是图3的区域B的局部放大图；
图5是本发明实施例提供的折叠显示模组的第二类孔的局部放大图；
图6是本发明实施例提供的折叠显示模组的第二过孔的局部放大图；
图7是本发明实施例提供的折叠显示模组的支撑板的另一种结构示意图；
图8是图7沿C1-C2截面的结构示意图；
图9是本发明实施例提供的折叠显示模组的另一种结构示意图；
图10是本发明实施例提供的折叠显示模组的仿真示意图；
图11是本发明实施例提供的折叠显示模组的折叠仿真对比示意图；
图12是本发明实施例提供的折叠显示模组的一种对比实验表征图；
图13是本发明实施例提供的折叠显示装置的结构示意图；
图14是本发明实施例提供的折叠显示装置的爆炸结构示意图。
本申请提供一种折叠显示模组及折叠显示装置，为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
本申请实施例提供一种折叠显示模组及折叠显示装置。以下分别进行详细说明。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
近些年，折叠显示模组越来越受到消费者喜爱，然而随着折叠屏显示模组长时间使用，折叠屏显示模组的弯折区内容易形成较为明显的折痕，导致在熄屏和显示状态下出现明显凹凸不平的现象，折痕问题的存在，一直影响着折叠屏显示模组市场进一步释放。
请参阅图1至图12，本发明实施例提供一种折叠显示模组100，包括至少一个弯折区110和与所述弯折区110连接的非弯折区120，所述弯折区110连接于两个所述非弯折区120之间，所述弯折区110包括第一弯折中心线101，所述第一弯折中心线101与第一方向平行，所述折叠显示模组100包括：
显示面板200；
支撑板300，设置于所述显示面板200的一侧；
其中，所述支撑板300包括多个第一挖孔组400和多个第二挖孔组500，各所述第一挖孔组400和各所述第二挖孔组500的延伸方向均与所述第一方向平行，一所述第一挖孔组400与一所述第二挖孔组500沿第二方向交替设置，所述第二方向设置成与所述第一方向呈一预设夹角，所述第一挖孔组400包括沿所述第一方向间隔设置的多个第一过孔410，所述第二挖孔组500包括沿所述第一方向间隔设置的多个第二过孔510，所述第一过孔410在所述第一方向上的长度大于所述第二过孔510在所述第一方向上的长度；
所述第一挖孔组400还包括位于相邻两个所述第一过孔410之间的第一间隙部420，在所述第二方向上，所述第二过孔510与所述第一间隙部420对应
设置。
本发明通过在弯折区设置长度不同的过孔，长过孔组与短过孔组交替设置，同时将第二过孔与第一间隙部对应设置，利用短过孔进一步减小第一间隙部的弯折应力，使弯折应力更均匀释放，同时短过孔减少了支撑板材料的去除，提高了支撑板的支撑性能，交替设置的长短过孔，增大了过孔排布复杂程度，使应力释放路径更加多样化，从而平衡了支撑板的扭转应力及支撑刚性，使弯折应力更均匀释放，在折叠状态下，使折叠显示模组的水滴型弯折形态的弯折弧形段更趋近圆形态，进一步减小受力以及使受力更均匀，以减轻折叠显示模组的折痕。
现结合具体实施例对本发明的技术方案进行描述。
本实施例中，请参阅图1至图4、图9，所述折叠显示模组100包括至少一个弯折区110和与所述弯折区110连接的非弯折区120，所述弯折区110连接于两个所述非弯折区120之间，所述弯折区110包括第一弯折中心线101，所述第一弯折中心线101与第一方向平行。
所述折叠显示模组100包括显示面板200、及设置于所述显示面板200的一侧的支撑板300，所述支撑板300包括多个第一挖孔组400和多个第二挖孔组500，各所述第一挖孔组400和各所述第二挖孔组500的延伸方向均与所述第一方向平行，一所述第一挖孔组400与一所述第二挖孔组500沿第二方向交替设置，所述第二方向设置成与所述第一方向呈一预设夹角，所述第一挖孔组400包括沿所述第一方向间隔设置的多个第一过孔410，所述第二挖孔组500包括沿所述第一方向间隔设置的多个第二过孔510，所述第一过孔410在所述第一方向上的长度大于所述第二过孔510在所述第一方向上的长度。所述第一挖孔组400还包括位于相邻两个所述第一过孔410之间的第一间隙部420，在所述第二方向上，所述第二过孔510与所述第一间隙部420对应设置。
以第一方向为X轴，第二方向为Y轴为例进行说明，所述第一挖孔组400包括沿X轴方向设置延伸的多个第一过孔410，在所述第一挖孔组400中，相邻两个所述第一个过孔之间有第一间隙部420，所述第一间隙部420为所述支撑板300的实体材料，即未挖孔部分，在进行折叠过程中，折叠的扭转应力主要集中在所述第一间隙部420，扭转应力仍无法得到有效释放，故在第二方向
的相邻两个第一挖孔组400之间设置第二挖孔组500，第二挖孔组500包括沿X轴方向设置延伸的多个第二过孔510，在Y轴方向上，所述第二过孔510与所述第一间隙部420对应设置。
若只在所述第一间隙部420内设置位于第一挖孔组400内的过孔，会使孔的排布过于单一，使应力释放路径单一，无法释放各个方向的复杂扭转应力，利用所述第二过孔510，在所述第一过孔410的旁边设置与第一间隙对应的第二过孔510，增大过孔排布复杂程度，使应力释放路径更加多样化，在折叠过程中，有利于释放复杂的扭转应力，使弯折应力更均匀释放，在折叠状态下，使折叠显示模组100的水滴型弯折形态的弯折弧形段更趋近圆形态，进一步减小受力以及使受力更均匀，以减轻折叠显示模组100的折痕。
在一些实施例中，请参阅图3至图6，所述第一挖孔组400中的多个所述第一过孔410包括设置于所述第一挖孔组400两端的两个第一类孔431、及设置于两个所述第一类孔431之间的至少一第二类孔432；所述第一类孔431包括靠近所述第一挖孔组400的对应端部的第一部分610、及远离所述第一挖孔组400的对应端部的第二部分620；所述第二类孔432包括两个第三部分630、及设置于两个所述第三部分630之间的第四部分640，所述第三部分630和所述第四部分640沿所述第一方向设置；其中，在所述第二方向上，所述第一部分610的最大宽度小于所述第二部分620的最小宽度，所述第三部分630的最小宽度大于所述第四部分640的最大宽度。
所述第一部分610及所述第四部分640的宽度缩小，以提高所述第一部分610及所述第四部分640周围的支撑材料的支撑塑形性能，保证支撑板300在折叠过程中不易变形坍塌；所述第三部分630及所述第二部分620的宽度增大，以降低在折叠过程中的扭转应力，从而平衡了均匀扭转应力及支撑刚性，进一步提高过孔的复杂程度，使所述支撑板300的材料挖孔轮廓可以覆盖更多的应力释放方向，使弯折应力可以朝更多方向释放，增多了弯折应力的释放路径，有利于弯折应力均匀释放，在折叠状态下，使折叠显示模组100的水滴型弯折形态的弯折弧形段更趋近圆形态，进一步减小受力以及使受力更均匀，以减轻折叠显示模组100的折痕。
在一些实施例中，请参阅图3至图6，所述第二过孔510包括与所述第一
间隙部420对应的第五部分650、及位于所述第五部分650两端的第六部分660；其中，所述第五部分650及所述第六部分660沿所述第一方向设置，在所述第二方向上，所述第五部分650的最小宽度大于所述第六部分660的最大宽度。
将对应所述第一间隙部420的所述第五部分650的宽度增大，从而减小所述第一间隙部420周围的支撑材料，以降低在折叠过程中的扭转应力，支撑材料的路径为应力释放的载体，增大所述第五部分650与所述第二部分620和所述第三部分630之间的支持材料的轮廓复杂程度，使所述支撑板300的材料挖孔轮廓可以覆盖更多的应力释放方向，使弯折应力可以朝更多方向释放，增强了应力释放路径的多样性，使弯折应力更均匀释放，在折叠状态下，使折叠显示模组100的水滴型弯折形态的弯折弧形段更趋近圆形态，进一步减小受力以及使受力更均匀，以减轻折叠显示模组100的折痕。
在一些实施例中，设置实验组和对比组，在不同支撑板300实验条件下进行折叠实验，对比组和实验组的支撑板300的厚度均为0.2mm。
对比组的条件为阵列式的均一开孔的支撑板300；实验组的条件为在所述第二方向上，所述第一部分610的最大宽度小于所述第二部分620的最小宽度，所述第三部分630的最小宽度大于所述第四部分640的最大宽度，在所述第二方向上，所述第五部分650的最小宽度大于所述第六部分660的最大宽度。
请参阅图9至图12，进行所述折叠显示模组100在折叠终态的仿真图、以及应力测量。其中，在应力对比图12中，横坐标表示测量点与所述第一弯折中心线101之间的路径距离，单位是毫米；纵坐标表示应力大小，单位是兆帕。
通过对比发现，运用本申请中的挖孔结构形貌设计，可使得水滴形态得到优化，即模组折叠后，水滴弯折弧形区的第一弯折子区111可由椭圆形态向圆形态接近，以此将水滴中间曲率降低，半径增大，从而改善模组受力。
在对比组中，因中间弯折区110曲率小导致整体受力较大，且无法调控屏体水滴弯折形态；在实验组中，可调控水滴形态，使得中间弯折区110曲率增大，水滴弯折弧形区的第一弯折子区111更接近圆弧形，可起到分散应力作用，从而使得模组中膜层的视窗盖板230受力明显得到降低，有利于减少折痕。
在一些实施例中，请参阅图4、图6，在所述第一方向上，所述第六部分
660的长度小于对应所述第二部分620的长度，所述第六部分660的长度小于对应所述第三部分630的长度。
所述第一部分610和所述第四部分640的主要作用是提供所述支撑板300更好的刚度，保证支撑板300在折叠过程中不易变形坍塌，第二部分620和所述第三部分630的主要作用是降低扭转应力，提高应力释放均匀性，故所述第六部分660不宜向所述第一部分610或所述第四部分640延伸，即在所述第二方向上，相邻两个所述第一部分610之间不设置所述第二过孔510，相邻两个所述第四部分640之间不设置所述第二过孔510，减少弯折区110的通孔率，使弯折区110具备更高的支撑性，以保证支撑板300的刚度，避免支撑板300在折叠过程中变形坍塌，减轻折叠显示模组100的折痕。
在一些实施例中，请参阅图4至图6，所述第二部分620的端部、所述第三部分630的端部、及所述第六部分660的端部的外轮廓为弧形；所述第一部分610与所述第二部分620之间的连接部分的外轮廓为弧形，所述第三部分630与所述第四部分640之间的连接部分的外轮廓为弧形，所述第五部分650与所述第六部分660之间的连接部分的外轮廓为弧形。
弧形有利于应力的均匀释放，同时在相同周长条件下，弧形的面积比直边形图形的面积大，可以增大挖孔的面积，进一步降低扭转应力，降低应力集中的风险，提高应力释放均匀性。弧形可以为圆形或椭圆形，在此只做举例，不做具体限定。
在一些实施例中，请参阅图4至图6，所述第一部分610和所述第二部分620之间的连接部分的外轮廓为弧形，所述第三部分630和所述第四部分640之间的连接部分的外轮廓为弧形，所述第五部分650和所述第六部分660之间的连接部分的外轮廓为弧形。弧形的面积比直边形图形的面积大，可以增大挖孔的面积，进一步降低扭转应力，降低应力集中的风险，提高应力释放均匀性。弧形可以为圆形、椭圆形、二次曲线、抛物线中任一种或两种或多种的组合，在此只做举例，不做具体限定。例如弧形可以由两段椭圆弧r1、r2构成。
在一些实施例中，在同一所述第一类孔431中，在所述第二方向上，所述第二部分620的最大宽度与所述第一部分610的最小宽度的比值为1.5至2。该比值过大或过小会导致应力释放性能和支撑刚性之间的不平衡，影响所述支
撑板300的性能参数，导致折痕明显。
在一些实施例中，在同一所述第二类孔432中，在所述第二方向上，所述第三部分630的最大宽度与所述第四部分640的最小宽度的比值为1.5至2。该比值过大或过小会导致应力释放性能和支撑刚性之间的不平衡，影响所述支撑板300的性能参数，导致折痕明显。
在一些实施例中，在同一第二过孔510中，在所述第二方向上，所述第五部分650的最大宽度与所述第六部分660的最小宽度的比值为1.5至2。该比值过大或过小会导致应力释放性能和支撑刚性之间的不平衡，影响所述支撑板300的性能参数，导致折痕明显。
在一些实施例中，请参阅图5，在所述第二方向上，所述第一部分610的宽度为0.1mm至0.15mm，所述第四部分640的宽度a3为0.1mm至0.15mm。该数值范围可以有效释放应力，又可以提供较强的支撑刚性。所述第一部分610的宽度与所述第四部分640的宽度类似，不再重复作图。
在一些实施例中，在所述第一方向上，所述第二类孔432的长度与所述第二过孔510的长度的比值为2至5。该比值过大或过小会导致应力释放性能和支撑刚性之间的不平衡，影响所述支撑板300的性能参数，导致折痕明显。
在一些实施例中，请参阅图5、图6，所述第二部分620的端部、所述第三部分630的端部、及所述第六部分660的端部的外轮廓为半椭圆形，其中，半椭圆形的长半轴a2与短半轴a1的比值为2至3。该比值过大或过小会导致应力释放性能和支撑刚性之间的不平衡，影响所述支撑板300的性能参数，导致折痕明显。
在一些实施例中，请参阅图5，在同一第二类孔432中，所述在所述第一方向上，所述第二类孔432的长度L1与所述第四部分640的长度L2的比值为1.5至2.5。
关于所述第二类孔432的两部分长度比例，需要有一定的限制，限制规则如下：
关于孔长度尺寸与应力关系问题，是与所述支撑板300的材料相关的设计参数，一般的，所述支撑板300的材料为SUS不锈钢，其屈服强度为1600MPa左右，因疲劳强度通常为材料屈服强度的0.5倍左右，故设计时以800MPa疲
劳强度为设计基准应力为参考，通过仿真来确定长度的比例，如下表1所示，为L1与L2的比值与应力之间的仿真对照表。
表1
关于孔长度尺寸与支撑性关系问题，是通过校核孔长度比值与弯折后仿真得出的反弹力进行校准。反弹力在一定程度上可以反映支撑性，其判定主要有两方面考虑：疲劳应力强度与闭合后的模组的弹力，理论上反弹力越大，则支撑性越好，越不易弯折，应力越大，但反弹力过大，在屏幕折叠后不易闭合，因此需要在如折叠显示装置的中框上增加磁铁吸附，磁体的大小与反弹力直接相关，一般的，磁体的极限力为4N左右，故设计时以4N为设计基准反弹力为参考，通过仿真来确定长度的比例，如下表2所示，为L1与L2的比值与反弹力之间的仿真对照表。
表2
L1/L2比值过大或过小会导致应力释放性能和支撑刚性之间的不平衡，影响所述支撑板300的性能参数，导致折痕明显，故选择L1/L2比值为1.5至2.5，以平衡所述支撑板300的支撑刚性和弯折性，同时符合产品的出货标准。
在一些实施例中，请参阅图6，在同一所述第二过孔510中，在所述第一方向上，所述第二过孔510的长度L4与所述第五部分650的长度L3的比值为12至15。
关于所述第二过孔510的两部分长度比例，同样需要有一定的限制，限制规则请参考L1/L2比值的限定规则，L4/L3的比值与应力之间的仿真结果请参阅表3、L4/L3的比值与反弹力之间的仿真结果请参阅表4。
表3
表4
L4/L3比值过大或过小会导致应力释放性能和支撑刚性之间的不平衡，影响所述支撑板300的性能参数，导致折痕明显，故根据趋势选择L4/L3比值为
12至15，以平衡所述支撑板300的支撑刚性和弯折性，同时符合产品的出货标准。
其中，图中的比例仅为示意，具体比例请参阅上述具体数据比例。
在一些实施例中，在所述第一方向上，所述第一类孔431的长度与所述第二类孔432的长度的比值为1/2至2/3。
在一些实施例中，请参阅图9、图11，为采取以上比例参数的平均值作为实验值进行实验，通过优化以上结构特征及各尺寸组合关系，结合力学仿真方式，调控以上尺寸参数，各尺寸控制在以上所述范围内，以控制折叠屏在弯折状态下的水滴型弯折形态，使得弯折区110的第一弯折子区111的中间弯折弧形段R1呈圆形状态，从而减小受力，或更为均匀，整体降低模组弯折部位的受力大小和应变，以减轻折痕。
在一些实施例中，在至少一所述第二挖孔组500中，靠近所述第二挖孔组500的中心的所述第二过孔510的所述第五部分650在所述第二方向上的宽度，大于远离所述第二挖孔组500的中心的所述第二过孔510的所述第五部分650在所述第二方向上的宽度；在至少一所述第二挖孔组500中，靠近所述第二挖孔组500的中心的所述第二过孔510的所述第六部分660在所述第一方向上的长度，大于远离所述第二挖孔组500的中心的所述第二过孔510的所述第六部分660在所述第一方向上的长度。
在所述第二挖孔组500的端部至所述第二挖孔组500的中心的方向上，越远离所述第二挖孔组500的端部，弯折应力的交叉变化越复杂，使所述第二挖孔组500的挖孔率提高，减小所述第五部分650与所述第三部分630之间的支撑板300的材料，提高支撑板300的弯折性能，同时增大所述第五部分650与所述第三部分630之间的支撑板的轮廓复杂程度，使所述支撑板300的材料挖孔轮廓可以覆盖更多的应力释放方向，使弯折应力可以朝更多方向释放，增强了应力释放路径的多样性，使弯折应力更均匀释放，在折叠状态下，使折叠显示模组100的水滴型弯折形态的弯折弧形段更趋近圆形态，进一步减小受力以及使受力更均匀，以减轻折叠显示模组100的折痕。
在一些实施例中，在至少一所述第一挖孔组400中，靠近所述第一挖孔组400的中心的所述第二类孔432的所述第三部分630在所述第一方向上的长度，
大于远离所述第一挖孔组400的中心的所述第二类孔432的所述第三部分630在所述第一方向上的长度。
在所述第一挖孔组400的端部至所述第一挖孔组400的中心的方向上，越靠近所述第一挖孔组400的中心，第三部分630越长，所述第四部分640越短，所述第一挖孔组400的挖孔率越高，所述支撑板300的弯折性能越强，可以释放更多的弯折应力，以减轻折叠显示模组100的折痕。
在一些实施例中，请参阅图2、图8、图9，所述弯折区110包括第一弯折子区111、位于所述第一弯折子区111外围的第一平面子区112、及位于所述第一平面子区112外围的第二弯折子区113，所述第二弯折子区113与所述非弯折区120连接；所述第一弯折中心线101位于所述第一弯折子区111内，各所述第一挖孔组400和各所述第二挖孔组500位于所述第一弯折子区111内；其中，所述支撑板300还包括设置于所述第二弯折子区113内的多个第三挖孔组700，各所述第三挖孔组700的延伸方向均与所述第一方向平行，所述第三挖孔组700的开孔深度小于所述支撑板300的厚度。
在所述折叠显示模组100处于折叠状态时，所述弯折区110的形状为水滴形，除了水滴形的底部有对应第一弯折子区111为弧形段R1，在水滴形的顶部有对应第二弯折子区113也有弧形段R2，以辅助折叠，释放折叠应力，而在所述第二弯折子区113内的弯折弧度较小，不需要进行过孔的设置，故所述第三挖孔组700为半蚀刻孔，以在提供增强弯折性能的同时，更多保留刚性支撑性能。
在一些实施例中，请参阅图9，所述弯折区110还包括第二弯折中心线102，所述第二弯折中心线102与第一方向平行，所述第二弯折中心线102位于所述第二弯折子区113内；其中，在靠近所述第二弯折中心线102的方向上，所述第三挖孔组700的深度逐渐增大。
越靠近所述第二弯折中心线102，弯折弧度越大，所述第三挖孔组700的深度越大，可以提供更强的弯折性能，可以释放更多的弯折应力，以减轻折叠显示模组100的折痕。
在一些实施例中，在靠近所述第二弯折中心线102的方向上，相邻两组所述第三挖孔组700之间的距离逐渐减小。
越靠近所述第二弯折中心线102，弯折弧度越大，所述第三挖孔组700的设置密度越高，挖空率越高，可以提供更强的弯折性能，可以释放更多的弯折应力，以减轻折叠显示模组100的折痕。
在一些实施例中，所述第三挖孔组700的挖孔深度与所述支撑板300的厚度的比值为1/2至2/3。该比值过大或过小，会影响弯折性能与支撑性能之间的平衡，影响所述支撑板300的性能参数，导致折痕明显。
在一些实施例中，所述第三挖孔组700的挖孔宽度与相邻两个所述挖孔组之间的距离的比值为1至5。该比值过大或过小，会影响弯折性能与支撑性能之间的平衡，影响所述支撑板300的性能参数，导致折痕明显。
在一些实施例中，所述第三挖孔组700的挖孔宽度为0.25mm至0.5mm。该数值范围可以有效释放应力，又可以提供较强的支撑刚性。
在一些实施例中，请参阅图8、图9，所述显示面板200包括面板主体210、位于靠近所述面板主体210的出光一侧的偏光层220、位于所述偏光层220远离所述面板主体210一侧的视窗盖板230、及位于远离所述面板主体210的出光一侧的背板240。其中，为方便作图，在图9中，所述偏光层220与所述视窗盖板230用合并膜层250表示。
在一些实施例中，请参阅图8、图9，所述支撑板300位于远离所述面板主体210的出光一侧。
在一些实施例中，所述支撑板300的材料为钢片、钛合金、碳纤维、高分子复合材料中任一种，在此只做举例，不做具体限定。
在一些实施例中，所述支撑板300的厚度为0.1mm至0.2mm，以平衡挖孔率与支撑性能。
本发明通过在弯折区设置长度不同的过孔，长过孔组与短过孔组交替设置，同时将第二过孔与第一间隙部对应设置，利用短过孔进一步减小第一间隙部的弯折应力，使弯折应力更均匀释放，同时短过孔减少了支撑板材料的去除，提高了支撑板的支撑性能，从而平衡了支撑板的扭转应力及支撑刚性，使弯折应力更均匀释放，在折叠状态下，使折叠显示模组的水滴型弯折形态的弯折弧形段更趋近圆形态，进一步减小受力以及使受力更均匀，以减轻折叠显示模组的折痕。
请参阅图13、图14本发明实施例还提供一种折叠显示装置10，包括如任一上述的折叠显示模组100。
在一些实施例中，所述折叠显示装置10还包括装置主体20，所述折叠显示模组100与所述装置主体20组合为一体。
所述折叠显示模组100的具体结构请参阅任一上述折叠显示模组100的实施例及附图，在此不再赘述。
本实施例中，所述装置主体20可以包括中框、框胶、外挂元件、铰链等，所述折叠显示装置10可以为手机、平板、电视等显示终端，在此不做限定。
在一些实施例中，所述第一平面子区112对应的所述支撑板300可以用于与铰链的浮板结构贴胶连接。
在一些实施例中，所述折叠显示装置10还包括对应的粘结层30。
本发明实施例公开了一种折叠显示模组及折叠显示装置；该折叠显示模组包括显示面板及支撑板，支撑板包括多个第一挖孔组和多个第二挖孔组，一第一挖孔组与一第二挖孔组沿第二方向交替设置，第一挖孔组包括多个第一过孔，第二挖孔组包括多个第二过孔，第一过孔在第一方向上的长度大于第二过孔在第一方向上的长度，第二过孔与相邻两个第一过孔之间的第一间隙部对应设置；本发明通过在弯折区设置长度不同且交替设置的长短过孔，利用短过孔减小第一间隙部的弯折应力，短过孔减少了支撑板材料的去除，提高了支撑板的支撑性能，增大了过孔排布复杂程度，应力释放路径更加多样化，平衡了支撑板的扭转应力及支撑刚性，使折叠时的弯折弧形段更趋近圆形态。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。
Claims (20)
- 一种折叠显示模组，其中，包括至少一个弯折区和与所述弯折区连接的非弯折区，所述弯折区连接于两个所述非弯折区之间，所述弯折区包括第一弯折中心线，所述第一弯折中心线与第一方向平行，所述折叠显示模组包括：显示面板；支撑板，设置于所述显示面板的一侧；其中，所述支撑板包括多个第一挖孔组和多个第二挖孔组，各所述第一挖孔组和各所述第二挖孔组的延伸方向均与所述第一方向平行，一所述第一挖孔组与一所述第二挖孔组沿第二方向交替设置，所述第二方向设置成与所述第一方向呈一预设夹角，所述第一挖孔组包括沿所述第一方向间隔设置的多个第一过孔，所述第二挖孔组包括沿所述第一方向间隔设置的多个第二过孔，所述第一过孔在所述第一方向上的长度大于所述第二过孔在所述第一方向上的长度；所述第一挖孔组还包括位于相邻两个所述第一过孔之间的第一间隙部，在所述第二方向上，所述第二过孔与所述第一间隙部对应设置。
- 根据权利要求1所述的折叠显示模组，其中，所述第一挖孔组中的多个所述第一过孔包括设置于所述第一挖孔组两端的两个第一类孔、及设置于两个所述第一类孔之间的至少一第二类孔；所述第一类孔包括靠近所述第一挖孔组的对应端部的第一部分、及远离所述第一挖孔组的对应端部的第二部分；所述第二类孔包括两个第三部分、及设置于两个所述第三部分之间的第四部分，所述第三部分和所述第四部分沿所述第一方向设置；其中，在所述第二方向上，所述第一部分的最大宽度小于所述第二部分的最小宽度，所述第三部分的最小宽度大于所述第四部分的最大宽度。
- 根据权利要求2所述的折叠显示模组，其中，在同一所述第一类孔中，在所述第二方向上，所述第二部分的最大宽度与所述第一部分的最小宽度的比值为1.5至2；在同一所述第二类孔中，在所述第二方向上，所述第三部分的最大宽度与所述第四部分的最小宽度的比值为1.5至2。
- 根据权利要求2所述的折叠显示模组，其中，所述第二过孔包括与所 述第一间隙部对应的第五部分、及位于所述第五部分两端的第六部分；其中，所述第五部分及所述第六部分沿所述第一方向设置，在所述第二方向上，所述第五部分的最小宽度大于所述第六部分的最大宽度。
- 根据权利要求4所述的折叠显示模组，其中，在所述第一方向上，所述第六部分的长度小于对应所述第二部分的长度，所述第六部分的长度小于对应所述第三部分的长度。
- 根据权利要求4所述的折叠显示模组，其中，所述第二部分的端部、所述第三部分的端部、及所述第六部分的端部的外轮廓为弧形；所述第一部分与所述第二部分之间的连接部分的外轮廓为弧形，所述第三部分与所述第四部分之间的连接部分的外轮廓为弧形，所述第五部分与所述第六部分之间的连接部分的外轮廓为弧形。
- 根据权利要求4所述的折叠显示模组，其中，在至少一所述第二挖孔组中，靠近所述第二挖孔组的中心的所述第二过孔的所述第五部分在所述第二方向上的宽度，大于远离所述第二挖孔组的中心的所述第二过孔的所述第五部分在所述第二方向上的宽度；在至少一所述第二挖孔组中，靠近所述第二挖孔组的中心的所述第二过孔的所述第六部分在所述第一方向上的长度，大于远离所述第二挖孔组的中心的所述第二过孔的所述第六部分在所述第一方向上的长度。
- 根据权利要求4所述的折叠显示模组，其中，在同一所述第二过孔中，在所述第一方向上，所述第二过孔的长度与所述第五部分的长度的比值为12至15。
- 根据权利要求4所述的折叠显示模组，其中，在同一第二过孔中，在所述第二方向上，所述第五部分的最大宽度与所述第六部分的最小宽度的比值为1.5至2。
- 根据权利要求2所述的折叠显示模组，其中，在至少一所述第一挖孔组中，靠近所述第一挖孔组的中心的所述第二类孔的所述第三部分在所述第一方向上的长度，大于远离所述第一挖孔组的中心的所述第二类孔的所述第三部分在所述第一方向上的长度。
- 根据权利要求2所述的折叠显示模组，其中，在同一所述第二类孔中， 在所述第一方向上，所述第二类孔的长度与所述第四部分的长度的比值为1.5至2.5。
- 根据权利要求1所述的折叠显示模组，其中，所述弯折区包括第一弯折子区、位于所述第一弯折子区外围的第一平面子区、及位于所述第一平面子区外围的第二弯折子区，所述第二弯折子区与所述非弯折区连接；所述第一弯折中心线位于所述第一弯折子区内，各所述第一挖孔组和各所述第二挖孔组位于所述第一弯折子区内；其中，所述支撑板还包括设置于所述第二弯折子区内的多个第三挖孔组，各所述第三挖孔组的延伸方向均与所述第一方向平行，所述第三挖孔组的开孔深度小于所述支撑板的厚度。
- 根据权利要求12所述的折叠显示模组，其中，所述弯折区还包括第二弯折中心线，所述第二弯折中心线与第一方向平行，所述第二弯折中心线位于所述第二弯折子区内；其中，靠近所述第二弯折中心线的方向上的所述第三挖孔组的深度大于远离所述第二弯折中心线的方向上的所述第三挖孔组的深度。
- 根据权利要求13所述的折叠显示模组，其中，在靠近所述第二弯折中心线的方向上，相邻两组所述第三挖孔组之间的距离逐渐减小。
- 根据权利要求1所述的折叠显示模组，其中，所述显示面板包括面板主体、位于靠近所述面板主体的出光一侧的偏光层、位于所述偏光层远离所述面板主体一侧的视窗盖板、及位于远离所述面板主体的出光一侧的背板；其中，所述支撑板位于远离所述面板主体的出光一侧。
- 一种折叠显示装置，其中，包括折叠显示模组，所述折叠显示模组包括至少一个弯折区和与所述弯折区连接的非弯折区，所述弯折区连接于两个所述非弯折区之间，所述弯折区包括第一弯折中心线，所述第一弯折中心线与第一方向平行，所述折叠显示模组包括：显示面板；支撑板，设置于所述显示面板的一侧；其中，所述支撑板包括多个第一挖孔组和多个第二挖孔组，各所述第一挖孔组和各所述第二挖孔组的延伸方向均与所述第一方向平行，一所述第一挖孔 组与一所述第二挖孔组沿第二方向交替设置，所述第二方向设置成与所述第一方向呈一预设夹角，所述第一挖孔组包括沿所述第一方向间隔设置的多个第一过孔，所述第二挖孔组包括沿所述第一方向间隔设置的多个第二过孔，所述第一过孔在所述第一方向上的长度大于所述第二过孔在所述第一方向上的长度；所述第一挖孔组还包括位于相邻两个所述第一过孔之间的第一间隙部，在所述第二方向上，所述第二过孔与所述第一间隙部对应设置。
- 根据权利要求16所述的折叠显示装置，其中，所述第一挖孔组中的多个所述第一过孔包括设置于所述第一挖孔组两端的两个第一类孔、及设置于两个所述第一类孔之间的至少一第二类孔；所述第一类孔包括靠近所述第一挖孔组的对应端部的第一部分、及远离所述第一挖孔组的对应端部的第二部分；所述第二类孔包括两个第三部分、及设置于两个所述第三部分之间的第四部分，所述第三部分和所述第四部分沿所述第一方向设置；其中，在所述第二方向上，所述第一部分的最大宽度小于所述第二部分的最小宽度，所述第三部分的最小宽度大于所述第四部分的最大宽度。
- 根据权利要求17所述的折叠显示装置，其中，所述第二过孔包括与所述第一间隙部对应的第五部分、及位于所述第五部分两端的第六部分；其中，所述第五部分及所述第六部分沿所述第一方向设置，在所述第二方向上，所述第五部分的最小宽度大于所述第六部分的最大宽度。
- 根据权利要求17所述的折叠显示装置，其中，在至少一所述第一挖孔组中，靠近所述第一挖孔组的中心的所述第二类孔的所述第三部分在所述第一方向上的长度，大于远离所述第一挖孔组的中心的所述第二类孔的所述第三部分在所述第一方向上的长度。
- 根据权利要求16所述的折叠显示装置，其中，所述弯折区包括第一弯折子区、位于所述第一弯折子区外围的第一平面子区、及位于所述第一平面子区外围的第二弯折子区，所述第二弯折子区与所述非弯折区连接；所述第一弯折中心线位于所述第一弯折子区内，各所述第一挖孔组和各所述第二挖孔组位于所述第一弯折子区内；其中，所述支撑板还包括设置于所述第二弯折子区内的多个第三挖孔组， 各所述第三挖孔组的延伸方向均与所述第一方向平行，所述第三挖孔组的开孔深度小于所述支撑板的厚度。
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