WO2022217655A1 - 支撑板及折叠显示屏 - Google Patents
支撑板及折叠显示屏 Download PDFInfo
- Publication number
- WO2022217655A1 WO2022217655A1 PCT/CN2021/090493 CN2021090493W WO2022217655A1 WO 2022217655 A1 WO2022217655 A1 WO 2022217655A1 CN 2021090493 W CN2021090493 W CN 2021090493W WO 2022217655 A1 WO2022217655 A1 WO 2022217655A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support plate
- sub
- bending
- sliding
- openings
- Prior art date
Links
- 238000005452 bending Methods 0.000 claims abstract description 148
- 238000005096 rolling process Methods 0.000 claims abstract description 38
- 238000010586 diagram Methods 0.000 description 15
- 230000035882 stress Effects 0.000 description 14
- 239000010410 layer Substances 0.000 description 9
- 230000001965 increasing effect Effects 0.000 description 7
- 239000012790 adhesive layer Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
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- 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
- H05K5/02—Details
-
- 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
- G06F1/1633—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
-
- 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
-
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
- H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
- H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
- H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
-
- 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 invention relates to the field of display technology, in particular to a support plate and a folding display screen.
- the existing stack structure of the foldable display screen generally includes a support plate for supporting the flexible display panel.
- a support plate for supporting the flexible display panel.
- the part of the support plate located in the bending area is removed.
- such a design may result in a lack of effective support for a part of the bending area of the foldable display screen, and the waviness and crease caused by repeated folding or unfolding of the bending area are serious.
- Embodiments of the present invention provide a support plate and a folding display screen to solve the problem that the existing folding display screen lacks effective support in the bending area, resulting in serious ripples and creases after repeated folding or unfolding of the bending area. technical problem.
- An embodiment of the present invention provides a support plate for supporting a flexible display panel, the support plate includes at least one bending area, at least one sliding area and a non-bending area, the bending area is used for bending, so The sliding and rolling regions are used for sliding and rolling, and the non-bending regions are disposed on two opposite sides of each of the bending regions, and between the bending regions and the sliding rolling regions; wherein any of the Both the bending area and any of the sliding-rolling areas include a plurality of first openings arranged in an array.
- any one of the first openings includes two first sub-openings extending along a first direction and arranged perpendicular to the first direction, and two first sub-holes located in the two A second sub-aperture extending between the first sub-apertures and along a second direction, the second direction being different from the first direction.
- a plurality of the first openings in any two adjacent columns or two adjacent rows are arranged in a staggered arrangement.
- the first direction and the second direction are perpendicular, and the two first sub-holes of any one of the first openings are arranged flush.
- the maximum length of the first opening along the first direction is L
- the second sub-holes of the first openings in two adjacent rows are along the second direction
- the distance between the center lines of , is S, L/2 ⁇ S ⁇ L.
- the maximum length of the first opening along the second direction is W
- the maximum width of the first sub-hole along the second direction is W1.
- the distance between the centerlines of the second sub-holes of the two rows of the first holes along the first direction is D, where W1 ⁇ D ⁇ (W-2W1).
- the support plate further includes a plurality of second openings, the second openings extend along the second direction, and the second openings are along the second direction Alternately arranged with the first openings.
- the centerline of any of the second openings along the second direction and the second sub-holes of the first openings in the same column along the second direction Centerlines coincide.
- the first sub-openings in any two adjacent rows are staggered and distributed, the first sub-openings in odd-numbered rows are aligned and distributed, and the first sub-openings in even-numbered rows are aligned and distributed.
- any two columns of the second sub-openings in any continuous arrangement of the four columns of the second sub-openings are staggered and distributed.
- the second sub-aperture in the same first opening, communicates with the two first sub-apertures.
- the length of the first sub-aperture is greater than the length of the second sub-aperture.
- both the bending region and the sliding rolling region include a middle region and an edge region located on both sides of the middle region and adjacent to the free edge, and the edge region is provided with a plurality of A third opening extending along the free edge toward the intermediate region.
- the third openings extend along the first direction, and a plurality of the third openings are arranged along a direction perpendicular to the first direction, and any one of the third openings is arranged along a direction perpendicular to the first direction.
- the third opening is arranged in parallel with at least one of the first sub-openings.
- the third opening includes a third sub-aperture and a fourth sub-aperture with different lengths, and the third sub-aperture and the fourth sub-aperture are staggered in sequence set up.
- the shape of the third opening is a "U" shape.
- the bending region is bent along a bending axis, and the sliding direction of the sliding rolling region is perpendicular to the bending axis.
- the extending direction of the first sub-aperture is the same as the direction in which the bending axis is located, and the extending direction of the second sub-aperture is the same as the sliding direction of the sliding rolling area. same direction.
- the support plate includes a first non-bending area, a bending area, a second non-bending area and a sliding area that are arranged in sequence, and the bending area of the bending area is The direction is opposite to the direction of curling of the slip-rolled region.
- An embodiment of the present invention further provides a foldable display screen, comprising the support plate described in any of the above embodiments and a flexible display panel disposed on one side of the support plate, the flexible display panel including a curved display panel connected to the support plate.
- the folding display screen further includes a backplane, a polarizer, and a touch layer
- the backplane is disposed between the flexible display panel and the support plate
- the backplane The polarizer is arranged on the side of the flexible display panel away from the support plate
- the touch layer is arranged on the side of the polarizer away from the flexible display panel.
- the supporting plate is designed to have a structure with a bending area and a sliding rolling area, and the first openings of the array are designed in both the bending area and the sliding rolling area, so that the flexible display panel can be supported and improved.
- the flatness of the flexible display panel can also enable the support plate in the bending area to have good extension performance and recovery deformation ability, and can improve the corrugation and crease phenomenon generated by the bending part of the flexible display panel in the prior art.
- FIG. 1 is a schematic plan view of a support plate provided by an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a bending region of a support plate according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a bending region of a support plate according to another embodiment of the present invention.
- FIG. 4 is an enlarged schematic view of the first opening in FIG. 2 .
- FIG. 5 is an enlarged schematic view of the first opening in FIG. 3 .
- FIG. 6 is a schematic structural diagram of a bending region of a support plate according to another embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of a bending region of a support plate according to still another embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of a bending region of a support plate according to another embodiment of the present invention.
- FIG. 9 is a film stacking composition diagram of a folding display screen provided by an embodiment of the present invention.
- FIG. 10 is a schematic diagram of a flattened state of a folding display screen provided by an embodiment of the present invention.
- FIG. 11 is a schematic structural diagram of a sliding roll portion of a folding display screen provided by an embodiment of the present invention after sliding outwards.
- FIG. 12 is a schematic structural diagram of an inward folding of a bending portion of a folding display screen according to an embodiment of the present invention.
- FIG. 13 is a schematic structural diagram of a bending portion of a folding screen provided by an embodiment of the present invention after being folded inward.
- the present invention is aimed at the existing folding display screen, because the part of the support plate located in the bending area is removed, resulting in the lack of effective support in the bending area of the folding display screen, and the bending area is caused by repeated folding or unfolding. In view of the serious technical problem of marks, this embodiment is proposed to overcome this defect.
- an embodiment of the present invention provides a support plate 10 for supporting a flexible display panel, and the support plate 10 includes at least one bending area 101 and at least one sliding area 103 , and a non-bending area 102, the bending area 101 is used for bending, the sliding rolling area 103 is close to the edge of the support plate, the sliding rolling area 103 is used for sliding and curling, the non-bending area
- the regions 102 are located on two opposite sides of each of the bending regions 101 and between the bending regions 101 and the sliding rolling regions 103 , wherein the bending regions 101 and the sliding rolling regions both include arrays of A plurality of first openings 11 .
- the folding display product in the prior art is a double-folding design of outer folding + inner folding, and the parts of the outer folding area and the inner folding area of the supporting plate are hollowed out to become three independent supporting plates
- the display product has good display effect and bending life, but due to the lack of support in the outer and inner fold areas, under the long-term repeated folding of the screen, the ripples and creases in the inner and outer fold areas are more serious.
- the support plate of the embodiment of the present invention adopts a new type of bending + sliding and curling design, and retains the support plate in the bending area and the sliding rolling area.
- the digging design of the roll area can improve the corrugation phenomenon in the bending area, and at the same time, it can also realize the new folding display design of sliding and rolling type.
- any one of the first openings 11 includes two first sub-openings 111 extending along the first direction X and arranged perpendicular to the first direction X, and two first sub-holes 111 located in the two first sub-holes 111 .
- the second sub-holes 112 between the openings 111 and extending along the second direction Y, the second direction X is different from the first direction Y.
- the first opening 11 of the support plate 10 in the embodiment of the present invention includes a first sub-aperture and a second sub-aperture extending in different directions, which can simultaneously release different stresses in the bending area and the sliding area.
- the material of the support plate 10 includes but is not limited to stainless steel (SUS).
- the support plate 10 of the embodiment of the present invention can support and protect the bending area of the flexible display panel.
- the design with the first sub-hole 111 and the second sub-hole 112 on the bending area 101 and the sliding area 103 of the support plate 10 On the one hand, the proportion of the opening area in the bending area 101 and the sliding area 103 is increased, which is beneficial to reduce the Young's modulus of the bending area 101 and the sliding area 103 of the support plate 10 and improve the elasticity of the support plate 10
- the amount of deformation, while reducing the appearance of ripples and creases in the bending area 101, is also conducive to realizing the design of the sliding folding screen, and the bending life of the support plate 10 under the condition of extremely small bending radius has a relatively obvious Boost effect.
- a plurality of the first openings 11 in any two adjacent columns or two adjacent rows are arranged in a staggered arrangement. Since the first openings 11 arranged in dislocation are affected by the material strength of the adjacent non-opening parts, after the bending force disappears, the stretched and extended part of the first openings 11 can quickly return to its original state, so that the support plate 10 has a good ability to restore deformation, improve the phenomenon of ripples and creases caused by repeated folding and unfolding of the flexible display panel, and ensure the flatness of the flexible display panel after restoring the flat state.
- the staggered arrangement of the first openings 11 can make the stress distribution of the support plate 10 more uniform during bending, and avoid stress concentration in a certain place.
- the bending region 101 is bent along a bending axis L1, and the sliding direction of the sliding rolling region 103 is perpendicular to the bending axis L1. Further, the rolling axis of the sliding rolling area 103 is parallel to the bending axis L1.
- the extension direction of the first sub-hole 111 is the same as the direction of the bending axis L1, which is conducive to the release of bending stress when the bending area 101 is bent and the sliding area 103 is curled; the The extending direction of the second sub-holes 112 is the same as the sliding direction of the sliding rolling area 103 , which is beneficial to release the tensile stress received by the sliding rolling area 103 during sliding.
- the first sub-openings 111 in any two adjacent rows are staggered and distributed, the first sub-openings 111 in odd-numbered rows are aligned and distributed, and the first sub-openings 111 in even-numbered rows are aligned and distributed.
- any two rows of the first apertures 11 in any continuous arrangement of the four rows of the first apertures 11 are staggered and distributed, so that the stress distribution is more uniform.
- any two rows of the second sub-holes 112 in any of the four consecutive rows of the second sub-holes 112 are dislocated and distributed.
- the first direction X and the second direction Y are perpendicular, and the two first sub-holes 111 of any one of the first openings 11 are arranged flush.
- the connection line between the outer end points of the two first sub-holes 111 on the same side is the same as the first direction X.
- center line of the second sub-hole 112 of any first hole 11 along the second direction coincides with the center line of the first sub-hole 111 of the first hole 11 along the second direction Y.
- the maximum length of the first opening 11 along the first direction X is L
- the second sub-openings of the first openings 11 in two adjacent rows are L.
- the distance between the centerlines L3 and L4 of the holes 112 along the second direction is S, L/2 ⁇ S ⁇ L, so that two adjacent rows of the first openings 11 have intersections in the first direction X.
- the arrangement density of the first sub-holes 111 on the support plate 10 can be increased, and the area of the first holes 11 can be increased by the design of overlapping the first openings 11 in the two rows in the first direction X. ratio, thereby increasing the amount of elastic deformation of the support plate 10 .
- the maximum length of the first opening 11 along the second direction Y is W
- the first sub-opening 111 along the second The maximum width in the direction Y is W1
- the distance between the centerlines L5 and L6 of the second sub-holes 112 of the first openings 11 in two adjacent rows along the first direction X is D, where W1 ⁇ D ⁇ (W-2W1). Therefore, two adjacent rows of the first openings 11 overlap in the second direction Y, that is, there is at least one straight line L7 with the same extension direction as the second direction Y passing through the adjacent two rows of the first openings 11 .
- the arrangement density of the second sub-holes 112 on the support plate 10 can be increased by the overlapping design of the two adjacent rows of the first openings 11 in the second direction Y, compared with the one shown in FIG. 2 .
- the embodiment can further increase the area ratio of the first opening 11 , further increase the amount of elastic deformation of the support plate 10 , and ensure the reliability of the bending performance of the support plate 10 .
- the distance D between the center lines L5 and L6 is (W-W1)/2, so that the stress distribution of the support plate 10 is more uniform during bending.
- the distance between two adjacent first sub-holes 111 in the same row is smaller than the maximum length of the first sub-holes 111 along the first direction X.
- the distance between two adjacent first sub-holes 111 in the same row is smaller than the maximum width of the first sub-holes 111 along the second direction Y.
- the value range of the maximum length W of the first opening 11 along the second direction Y may be 0.8-0.9 mm.
- the maximum length L of the first opening 11 along the first direction X may be 4.00 ⁇ 4.20 mm. In this embodiment, the maximum length L is the maximum length of the first sub-hole 111 in the first direction X. As shown in FIG.
- the maximum width W1 of the first sub-hole 111 along the second direction Y may be 0.18 mm ⁇ 0.22 mm.
- the width of the second sub-hole 112 along the first direction X may be 0.16-0.22 mm.
- the distance between two adjacent first sub-holes 111 in the same row may be 0.45-0.55 mm.
- the distance between two adjacent first sub-holes 111 in the same row may be 0.10-0.15 mm.
- the distance along the first direction X between the first sub-holes 111 of any row of the first apertures 11 and the second sub-holes 112 of the first apertures 11 of the adjacent row may be 0.14-0.18 mm.
- the shapes of the first sub-opening 111 and the second sub-opening 112 include a long strip, an ellipse, a plum blossom, a parallelogram, and the like.
- the shapes of the first sub-holes 111 and the second sub-holes 112 are both elongated.
- the corners of the first sub-hole 111 and the corners of the second sub-hole 112 can be designed to be inverted Rounded corner design to avoid stress concentration.
- the four corners of the first sub-hole 111 are all rounded corners, and the radius of the arc of the rounded corners along the first direction X may be 0.16-0.22 mm.
- both ends of the first sub-hole 111 are semi-circular, and the radius of the semi-circle may be 0.16-0.22 mm.
- the length of the first sub-hole 111 is greater than the length of the second sub-hole 112, which is beneficial to improve the extension performance of the support plate 10 when it is bent along the bending axis L1.
- the bending area 101 and the sliding area 103 both include a middle area and an edge area located on both sides of the middle area and adjacent to the free edge 1013.
- the edge region is provided with a plurality of third openings 12 extending along the free edge 1013 to the middle region.
- the bending region 101 includes a middle region 1011 and edge regions 1012 on both sides of the middle region 1011
- the rolling region 103 includes a middle region 1031 and edge regions 1032 on both sides of the middle region 1031 .
- the free edge 1013 is the edge of the support plate 10 that is perpendicular to the bending axis L1.
- the extension performance of the support plate 10 can be further improved, and the bending area 101 and the sliding area can be reduced.
- the two ends of the area 103 generate a compressive stress on the display panel during the bending or sliding process.
- the third openings 12 extend along the first direction X, and a plurality of the third openings 12 are arranged along a direction perpendicular to the first direction X, and any one of the third openings 12 is arranged along a direction perpendicular to the first direction X.
- the hole 12 is arranged in parallel with at least one of the first sub-holes 111 .
- the lengths of the third openings 12 in the same row in the first direction X are kept the same, so that when the support plate is bent, the stress distribution in the regions near the free edge 1013 on both sides is more uniform.
- the shape of the third opening 12 may be a "U" shape.
- the third opening 12 includes a third sub-aperture 121 and a fourth sub-aperture 122 with different lengths.
- the length of the third sub-hole 121 is greater than the length of the fourth sub-hole 122 .
- the length of the fourth sub-hole 122 along the first direction X may be 1.45 ⁇ 1.55 mm.
- the third sub-holes 121 and the fourth sub-holes 122 are alternately distributed in sequence.
- any of the third openings 12 can be formed by intersecting the first sub-opening 111 and the free edge 1013 .
- the second sub-aperture 112 communicates with the two first sub-apertures 111 , that is, the first opening 11 is formed into an "I" or "H" shape.
- the support plate 10 further includes a plurality of second openings 13 , the second openings 13 extend along the second direction Y, and the second openings 13 extend along the second direction Y.
- the second direction Y and the first openings 11 are alternately arranged.
- the area ratio of the openings of the support plate 10 can be increased, and the amount of elastic deformation of the support plate 10 can be increased.
- the centerline of any second opening 13 along the second direction Y is along the second sub-hole 112 of the first opening 11 in the same column along the second The centerlines of the direction Y coincide.
- the second opening 13 extends along the second direction Y, and there is a gap between the second opening 13 and the two adjacent first openings 11 to increase the longitudinal direction of the support plate 10 stability.
- the second openings 13 are also provided between two adjacent third sub-openings 121 arranged along the second direction Y to further increase the support.
- the area ratio of the openings of the plate 10 There is a gap between the second opening 13 and the adjacent two third sub openings 121 to increase the longitudinal stability of the support plate 10 .
- Any second opening 13 in the middle regions 1011 and 1031 is located in the gap between two adjacent first sub openings 111 in the same row, and any second opening 13 in the edge region 1012 The openings 13 are all located between the fourth sub-aperture 122 in the same row and the first sub-aperture 111 adjacent thereto.
- the support plate 10 includes a first non-bending area 102A, a bending area 101, In the second non-bending region 102B and the sliding-rolling region 103 , the bending direction of the bending region 101 is opposite to the curling direction of the sliding-rolling region 103 .
- the bending region 101 can be folded inward into a wedge shape, which can satisfy the design of the bending radius ⁇ 1.5mm.
- the sliding roll area 103 can be slidably folded outward into a "U" shape, which can meet the design of a bending radius of 2.5-3 mm.
- an embodiment of the present invention further provides a foldable display screen 100.
- the foldable display screen 100 includes the support plate 10 in any of the above-mentioned embodiments and a foldable display screen 100 disposed on the support plate. 10 side of the flexible display panel 30.
- the flexible display panel 30 includes a bending portion 301 corresponding to the bending region 101 of the supporting plate 10 , a sliding portion 303 corresponding to the sliding region 103 of the supporting plate 10 , and a sliding portion 303 corresponding to the supporting plate 10
- the non-bending region 102 corresponds to the plane portion 302 .
- the folding display screen 100 further includes a backplane 20 , a polarizer 40 and a touch layer 50 , the backplane 20 is disposed between the flexible display panel 30 and the support plate 10 , the polarizer 40 is disposed on the side of the flexible display panel 30 away from the support plate 10 , and the touch layer 50 is disposed on the side of the polarizer 40 away from the flexible display panel 30 .
- a cover plate is further provided on the side of the touch layer 50 away from the flexible display panel 30 , and the cover plate and the touch layer 50 are attached through a first adhesive layer.
- the back plate 20 and the support plate 10 are attached through a second adhesive layer.
- first adhesive layer and the second adhesive layer include but are not limited to pressure sensitive adhesive (PSA).
- PSA pressure sensitive adhesive
- thermoplastic polyurethane resin film is further disposed between the back plate 20 and the support plate 10 , and the thermoplastic polyurethane resin has the characteristics of high tension, high tensile force, toughness and aging resistance.
- thermoplastic polyurethane resin film and the back plate 20 and between the thermoplastic polyurethane resin film and the support plate 10 can be attached through an adhesive layer.
- the position of the neutral layer of the folding display screen 100 can be adjusted by adjusting the thickness of each adhesive layer, so that the film layer where the flexible display panel 30 is located is closer to the position of the neutral layer, thereby enhancing the folding display screen. 100 bending performance.
- the supporting plate 10 including one bending area and one sliding area 103 as an example, but it is not limited to this.
- the supporting plate may include more bending areas. area and two sliding areas.
- the support plate 10 includes a first non-bending area 102A, a first non-bending area 102A, a bending area 101 , a second non-bending area 102B, and a sliding area 103 arranged in sequence.
- the flexible display panel 30 includes a first flat portion 302A, a bending portion 301 , a second flat portion 302B, and a sliding portion 303 distributed in sequence.
- a in FIG. 10 is a schematic front view of the folding display screen 100
- B in FIG. 10 is a schematic diagram of the reverse side of the folding display screen 100 .
- the folding display screen 100 includes opposite front and back sides.
- the display surfaces of all parts of the flexible display panel 30 are located on the front side, and the display area of the foldable display screen 100 is the largest, which can be applied to computer scenarios.
- C in FIG. 11 is a schematic diagram of the front view after the sliding portion 303 of the folding display screen 100 is slid and rolled to the back
- D in FIG. 11 is the sliding portion 303 of the folding display 100 being slid and rolled Schematic diagram of the back after reaching the back.
- the sliding rolling portion 303 is rolled while sliding. side
- the display surface of the folding display screen 100 corresponding to the sliding part 303 is located at the back
- the display area of the folding display screen 100 is reduced
- the first flat part 302A and the second flat part 302B together form a display face, which can be applied to pad scenes.
- the display surface of the folding display screen 100 in the embodiment of the present invention is mainly composed of three parts, namely, the sliding portion 303, The second plane portion 302B and the first plane portion 302A are formed.
- the folding display screen 100 of the embodiment of the present invention may include two different forms of folding. In order to make the above three parts overlap without occupying too much space after the two folding, preferably, the sliding part 303 and the second plane part The length and width of the first plane portion 302B and the first plane portion 302A may be approximately equal.
- E in FIG. 12 is a schematic front view of the bending portion 301 of the folding display screen 100 when folded inward
- F in FIG. 12 is the bending portion 301 of the folding display screen 100
- G and H in FIG. 13 are schematic diagrams of the back after the bending portion 301 of the folding display screen 100 is completely bent.
- the bending portion 301 drives the first flat portion 302A to bend to the front of the second flat portion 302B (the side away from the second non-bending area 102B), and the folding display screen 100
- the part corresponding to the first flat portion 302A is folded inward to the front of the folding display screen 100 to further reduce the display area of the folding display screen 100.
- the display surface corresponding to the first flat portion 302A and the display surface corresponding to the second flat portion 302B are The display surface is opposite and cannot be displayed, so only the part corresponding to the sliding scroll part 303 on the back is the display surface, which can be applied to the mobile phone scene.
- the support plate 10 is designed to have a structure with a bending area and a sliding area at the same time, and an array of first openings 11 are designed in the bending area and the sliding area, so as to support the flexible display panel. It can improve the flatness of the flexible display panel, and make the support plate in the bending area have good extension performance and recovery deformation ability, which can improve the corrugation and crease phenomenon caused by the bending part of the flexible display panel in the prior art.
- the first opening 11 includes a first sub-aperture 111 and a second sub-aperture 112 extending in different directions, which can simultaneously release the bending stress of the bending region 101 and the bending stress of the sliding rolling region 103 As well as the release of tensile stress, the support plate 10 has good elongation performance and recovery deformation ability in both regions.
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Abstract
Description
Claims (22)
- 一种支撑板,用于支撑柔性显示面板,其中,包括:至少一弯折区域,所述弯折区域用于弯折;至少一滑卷区域,靠近所述支撑板的边缘,所述滑卷区域用于滑动和卷曲;非弯折区域,设置于每一所述弯折区域的两相对侧、以及所述弯折区域与所述滑卷区域之间;其中,任一所述弯折区域和任一所述滑卷区域均包括阵列设置的多个第一开孔。
- 根据权利要求1所述的支撑板,其中,任一所述第一开孔包括两个沿第一方向延伸、并沿垂直于所述第一方向排布的第一子开孔,以及位于两所述第一子开孔之间并沿第二方向延伸的第二子开孔,所述第二方向与所述第一方向不同。
- 根据权利要求2所述的支撑板,其中,任意相邻两列或者相邻两行的多个所述第一开孔错位排列。
- 根据权利要求3所述的支撑板,其中,所述第一方向和所述第二方向垂直,任一所述第一开孔的两所述第一子开孔平齐设置。
- 根据权利要求4所述的支撑板,其中,所述第一开孔沿所述第一方向的最大长度为L,相邻两列所述第一开孔的第二子开孔沿所述第二方向的中心线之间的间距为S,L/2<S<L。
- 根据权利要求5所述的支撑板,其中,所述第一开孔沿所述第二方向的最大长度为W,所述第一子开孔沿所述第二方向的最大宽度为W1,相邻两行所述第一开孔的第二子开孔沿所述第一方向的中心线之间的间距为D,W1<D<(W-2W1)。
- 根据权利要求6所述的支撑板,其中,所述支撑板还包括多个第二开孔,所述第二开孔沿所述第二方向延伸,所述第二开孔沿所述第二方向与所述第一开孔交替排布。
- 根据权利要求7所述的支撑板,其中,任一所述第二开孔沿所述第二方向的中心线与其同列的所述第一开孔的第二子开孔沿所述第二方向的中心线重合。
- 根据权利要求2所述的支撑板,其中,任意相邻两行的第一子开孔错位分布,奇数行的第一子开孔对齐分布,偶数行的第一子开孔对齐分布。
- 根据权利要求2所述的支撑板,其中,任意连续排列的四列第二子开孔中的任意两列第二子开孔错位分布。
- 根据权利要求2所述的支撑板,其中,同一所述第一开孔中,所述第二子开孔连通两所述第一子开孔。
- 根据权利要求2所述的支撑板,其中,同一所述第一开孔中,所述第二子开孔与两所述第一子开孔之间均具有间隙。
- 根据权利要求2所述的支撑板,其中,所述第一子开孔的长度大于所述第二子开孔的长度。
- 根据权利要求2所述的支撑板,其中,所述弯折区域和所述滑卷区域均包括中间区域及位于所述中间区域两侧且临近自由边的边缘区域,所述边缘区域设置有多个沿所述自由边向所述中间区域延伸的第三开孔。
- 根据权利要求14所述的支撑板,其中,所述第三开孔沿所述第一方向延伸,且多个所述第三开孔沿与所述第一方向垂直的方向排布,任一所述第三开孔与至少一个所述第一子开孔同行设置。
- 根据权利要求15所述的支撑板,其中,所述第三开孔包括长度不同的第三子开孔和第四子开孔,所述第三子开孔和所述第四子开孔依次交错设置。
- 根据权利要求16所述的支撑板,其中,所述第三开孔的形状为“U”型。
- 根据权利要求2所述的支撑板,其中,所述弯折区域沿一弯折轴线弯折,所述滑卷区域的滑动方向与所述弯折轴线相互垂直。
- 根据权利要求18所述的支撑板,其中,所述第一子开孔的延伸方向与所述弯折轴线所在的方向相同,所述第二子开孔的延伸方向与所述滑卷区域的滑动方向相同。
- 根据权利要求1所述的支撑板,其中,所述支撑板包括依次排布的第一非弯折区域、弯折区域、第二非弯折区域以及滑卷区域,所述弯折区域的弯折方向与所述滑卷区域的卷曲方向相反。
- 一种折叠显示屏,其中,包括支撑板以及设置于所述支撑板一侧的柔性显示面板,其中,所述支撑板包括:至少一弯折区域,所述弯折区域用于弯折;至少一滑卷区域,靠近所述支撑板的边缘,所述滑卷区域用于滑动和卷曲;非弯折区域,设置于每一所述弯折区域的两相对侧、以及所述弯折区域与所述滑卷区域之间;任一所述弯折区域和任一所述滑卷区域均包括阵列设置的多个第一开孔;所述柔性显示面板包括与所述支撑板的弯折区域对应的弯折部、与所述支撑板的滑卷区域对应的滑卷部、以及与所述支撑板的非弯折区域对应的平面部。
- 根据权利要求21所述的折叠显示屏,其中,所述折叠显示屏还包括:背板,设置于所述柔性显示面板与所述支撑板之间;偏光片,设置于所述柔性显示面板背离所述支撑板的一侧;以及触控层,设置于所述偏光片背离所述柔性显示面板的一侧。
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JP2021548166A JP7399178B2 (ja) | 2021-04-15 | 2021-04-28 | 支持板及び折り畳み式表示パネル |
KR1020217022209A KR102637347B1 (ko) | 2021-04-15 | 2021-04-28 | 지지판 및 폴딩 디스플레이 스크린 |
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CN114420865B (zh) * | 2022-01-10 | 2024-02-13 | 深圳市华星光电半导体显示技术有限公司 | Oled显示模组和oled显示装置 |
CN114333601B (zh) * | 2022-01-12 | 2023-12-15 | 京东方科技集团股份有限公司 | 支撑板以及显示装置 |
CN114446170A (zh) * | 2022-01-29 | 2022-05-06 | 合肥维信诺科技有限公司 | 支撑板、可折叠显示模组及可折叠显示装置 |
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JP2023524185A (ja) | 2023-06-09 |
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US20240015902A1 (en) | 2024-01-11 |
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