CN111696434A - Folding plate and folding display device - Google Patents

Abstract

A folding plate is used for being matched with folding of a folding screen, the folding screen comprises a first non-folding area, a second non-folding area and a folding area located between the first non-folding area and the second non-folding area, the folding plate comprises a first plate part, a second plate part and a plurality of strip-shaped bodies located between the first plate part and the second plate part, the strip-shaped bodies are mutually independent, gaps exist between every two adjacent strip-shaped bodies, the first plate part, the second plate part and the strip-shaped bodies are connected into a whole, the first non-folding area and the second non-folding area of the folding screen are respectively fixed with the first plate part and the second plate part into a whole, the folding area of the folding screen corresponds to the strip-shaped bodies, the folding area and the strip-shaped bodies are separated and not fixed, and when the folding screen is folded, the strip-shaped bodies are folded into arc-shaped bending parts corresponding to the folding area; the application also includes a foldable display device.

Description

Folding plate and folding display device

Technical Field

The present invention relates to the field of communications electronics, and more particularly, to a foldable board and a foldable display device.

Background

With the development of the folding screen technology, the folding screen mobile phone has become a hot spot technology. Although the folding screen can be bent, the 180-degree bending cannot be realized, and the bent part still needs to keep a certain R angle, otherwise the screen can be damaged. The existing folding mode is divided into inward folding and outward folding, namely the screen is positioned at the inner side or the outer side after being folded, for example, Mate X issued by Huawei is outward folding, but the outward folding has the problems that the screen is in an exposed state and is easily scratched by a hard object, and the folding screen is fragile.

No matter the folding screen is folded outwards or inwards, the problem to be solved is how to ensure that when the folding screen is bent, the bending mechanism is adapted to the R-angle radian required by the bending part of the screen, at the moment, the inner side of the bending part of the folding screen can shorten the slight distance, while the outer side of the folding screen can lengthen the slight distance, at the moment, the parts tightly attached to the folding screen must keep synchronous change, otherwise, the screen can be damaged by extrusion. And guarantee that there is support in the folding screen back, otherwise unsettled screen can cause the damage when the finger is pressed.

Disclosure of Invention

In view of the above, it is desirable to provide a folding plate and a foldable display device, wherein the folding plate and the foldable screen are simultaneously bent without crushing the foldable screen.

In order to solve the above technical problems, the present application provides a folding plate for cooperating with the folding of a folding screen, the folding screen comprises a first non-folding area, a second non-folding area and a folding area positioned between the first non-folding area and the second non-folding area, the folding plate comprises a first plate part, a second plate part and a plurality of strip-shaped bodies positioned between the first plate part and the second plate part, the strip-shaped bodies are mutually independent, gaps are arranged between every two adjacent strip-shaped bodies, the first board part, the second board part and the plurality of strip-shaped bodies are connected into a whole, the first non-folding area and the second non-folding area of the folding screen are respectively fixed with the first board part and the second board part into a whole, the folding area of the folding screen corresponds to the strip-shaped body, the folding area and the strip-shaped body are separated but not fixed, when the folding screen is folded, the plurality of strip-shaped bodies are folded into the arc-shaped bent parts corresponding to the folding areas.

Preferably, in the folded state, the gap between the strips on the side close to the folding screen is narrowed, and the gap on the side of the strips away from the folding screen is widened.

Preferably, the strip includes first and second wide strips adjacent to the first and second plate portions, respectively, and a narrow strip located between the first and second wide strips.

Preferably, the first plate part, the second plate part and the strip-shaped body of the folding plate are bonded into an integral structure through glue.

Preferably, the glue covers the first plate part, the second plate part and one side surface of the strip-shaped body far away from the folding screen, and the glue simultaneously infiltrates into gaps between the strip-shaped bodies and the first plate part and the second plate part.

Preferably, the depth of penetration of the glue into the gap is not more than half the thickness of the strip.

Preferably, the thickness of the folded plate is 0.1-0.4mm, the width of the first and second wide strips is 1.2-1.8mm, and the width of the narrow strips is 0.2-0.6 mm.

Preferably, the width of the gap between the bars and the first and second plate portions is 0.10 to 0.12 mm.

Preferably, the glue is 0.1-0.3mm thick on the surfaces of the first plate part, the second plate part and the strip body.

In order to solve the technical problem, the application further provides a foldable display device, which comprises the foldable plate.

The application discloses folded sheet and folding display device, through set up first, second board and be located on the folded sheet a plurality of bars between first, the second board, mutual independence and there is the clearance between the bar, with when the folding screen is folding, the bar changes into arc flexion, the adaptation is shortened to the inner arc length of arc flexion folding screen's folding, promptly be close to between the bar the clearance constriction of folding screen one side.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

Fig. 1 to 13 are drawings of a foldable display device according to an embodiment of the present application:

FIG. 1 is a perspective view of a foldable display device according to the present application;

FIG. 2 is a top view of the folding plate of the present application;

FIG. 3 is a partial enlarged view of the dotted circle A of FIG. 2;

FIG. 4 is a rear view of the present application in a middle position of the folding plate;

FIG. 5 is a schematic view of a folding plate and folding screen of the present application during folding;

FIG. 6 is a schematic view of the folding plate and folding screen of the present application in a folded position;

FIG. 7 is a partial enlarged view of the dotted circle B shown in FIG. 6;

FIG. 8 is a perspective assembly view of the folding mechanism of the present application;

FIG. 9 is an exploded perspective view of the folding mechanism of the present application;

FIG. 10 is an exploded perspective view of the folding mechanism of the present application from another angle;

FIG. 11 is a perspective assembly view of the rotating mechanism of the present application;

FIG. 12 is an exploded perspective view of the turning mechanism of the present application;

FIG. 13 is a perspective view of a latch assembly of the pivoting mechanism of the present application.

Fig. 14 to 22 are drawings of a second embodiment of the present application:

FIG. 14 is a perspective assembly view of the foldable display device of the present application;

FIG. 15 is a perspective view of the folding plate and rotating mechanism of the present application;

FIG. 16 is a perspective view from the reverse of the view shown in FIG. 15;

FIG. 17 is a perspective view of the folding plate and rigid plate of the present application;

FIG. 18 is a perspective view of a support member of the folding mechanism of the present application;

FIG. 19 is a perspective view of a rotating member of the folding mechanism of the present application;

FIG. 20 is a perspective assembly view of the rotating mechanism of the present application;

FIG. 21 is a partially exploded view of the turning mechanism of the present application;

fig. 22 is an exploded perspective view of the turning mechanism of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Please refer to the first embodiment shown in fig. 1 to 13:

referring to fig. 1 and 5, the foldable display device of the present application includes a foldable board 10, a folding mechanism 20 fixed to a first surface of the foldable board 10, and a foldable screen 30 attached to a second surface of the foldable board 10.

With continued reference to fig. 2 to 7, the folding plate 10 of the present application includes a first plate portion 11, a second plate portion 12, and a plurality of bars 13 located between the first plate portion 11 and the second plate portion 12.

Referring to fig. 3 and 4, the strip 13 includes a plurality of narrow strips 133 at a middle portion thereof, and a plurality of first and second wide strips 131 and 132 respectively disposed at both sides of the narrow strips 133. The strip-shaped body 13 and the strip-shaped body 13 are independent from the first and second plate parts 11, 12, and have a certain gap, and the gap width is 0.10-0.12mm, preferably 0.11 mm. The narrow strip-shaped body 133 has a width of 0.2-0.6mm, preferably 0.4mm, and a thickness of 0.1-0.4mm, preferably 0.2 mm. The first and second wide strips 131, 132 have a width of 1.2-1.8mm, preferably 1.5mm, and a thickness equal to the thickness of the narrow strip 133. The plurality of strips 13 are bonded into a whole through glue 134, the glue 134 is located on the first surfaces of the plurality of strips 13 and forms a certain thickness on the first surfaces, the thickness of the glue 134 located on the first surfaces of the strips 13 is about 0.1-0.3mm, the glue 134 further extends into the space between the plurality of strips 13, and the depth of the glue 134 extending into the space between the strips 13 is one third to one half of the thickness of the strips 13.

Referring to fig. 5, the folding screen 30 is attached to the second surface of the folding plate 30, the folding screen 30 includes first and second non-folding areas 31 and 32 and a folding area 33 located between the first and second non-folding areas 31 and 32, and the first and second non-folding areas 31 and 32 are respectively fixed on the first and second plate portions 11 and 12 of the folding plate 10, for example, by gluing. The folding zone 33 corresponds to the position of the bar 13, and the folding zone 33 and the bar 13 are separated and not fixed.

When bent, the thickness of the folding screen 30 is about 0.5 mm. As the folding screen 30 is bent, the length of the outer arc surface of the folding area 33 of the folding screen 30 becomes longer, and the length of the inner arc surface becomes shorter by compression. Although the variation in the length of the inner and outer arcs is small, the folding plate 10 must be adapted to the variation in the length of the inner and outer arcs, or the folding plate 10 may press the folding screen 30 to damage the folding screen 30.

As shown in fig. 5 to 7, in the process that the strip-shaped bodies 13 of the folding plate 10 are bent along with the folding screen 30, the angles of the strip-shaped bodies 13 independently change, gaps exist between the strip-shaped bodies 13, gaps between the strip-shaped bodies 13 corresponding to the inner arc surfaces of one side of the folding screen 30 are reduced after folding, and the flexible glue 134 in the gaps between the outer arc surfaces of the strip-shaped bodies 13 expands to increase the gaps so as to adapt to the change of the lengths of the outer arc surfaces of the folding screen 30 without squeezing the outer arc surfaces of the folding screen 30. Because the narrow strip-shaped body 133 corresponds to the position of the folding area 33 of the folding screen 30 where the folding angle is the largest, the narrow strip-shaped body 133 can be slightly changed to adapt to the length change caused at the position of the folding area 33 where the folding angle is the largest.

As shown in fig. 8 to 13, the folding mechanism 20 includes a fixing base 21 fixed on the folding board 10 or other board-like bodies similar to the folding board 10, a rotating mechanism, a transmission mechanism 22 connecting the rotating mechanism and the fixing base 21, and a housing 23 accommodating the rotating mechanism.

Each fixing seat 21 includes a pair of fixing pieces symmetrically disposed, and each fixing piece includes a fixing base 211 fixed on the folding plate 10, a vertical portion 212 vertically bent from the fixing base 211 and extending upward, and an arc-shaped rail 213 opened on the vertical portion 212. The movement track of the arc-shaped track 213 is adapted to the folding track of the folding screen 30.

Each fixing seat 21 is correspondingly provided with a transmission mechanism 22, and the transmission mechanism 22 includes a fixed end 224, a sliding end 221 matched with the fixing seat 21, extending pieces 222 formed by bending and extending from two lateral sides of the sliding end 221 toward the fixing seat 21, and a sliding shaft 223 passing through the pair of extending pieces 222. During installation, the sliding end 221 is overlapped above the fixing base 21, and then the sliding shaft 223 sequentially passes through the arc-shaped rail 213 on one side, the hole structures (not numbered) arranged on the two extending pieces 222 and the arc-shaped rail 213 on the other side. Finally, the free end of the slide shaft 223 is fixed so as not to fall off.

Referring to fig. 11 and 12, the rotating mechanism includes a pair of spindles 24, a coupling member 25 sequentially sleeved on and fixed to the spindles 24, a first spacer 291, a gear 26 respectively sleeved on the spindles 24 and engaged with each other, a second spacer 292, a spring 27 respectively sleeved on the spindles 24, a third spacer 293, a rotation control member 281, 282, and a fourth spacer 294.

The coupling member 25 includes a first through hole 251 respectively sleeved on the pair of spindles 24 from left to right, and the rotating mechanism 24 can rotate in the first through hole 251. The pair of second through holes 261 of the pair of gears 26 are sleeved on the main shaft 24 and fixed with the main shaft 24, so that the relative positions of the main shaft 24 and the gears 26 are fixed. The spring 27 is pressed between the second washer 292 and the third washer 293. The rotary control members 281 and 282 include a movable member 281 movable in the longitudinal direction of the main shaft 24 and a pair of fixed members 282 engaged with the movable member 281. The rotation control members 281, 282 are sandwiched between the third spacer 293 and the fourth spacer 294. After the housing 23 is assembled, the rotating mechanism is fixed in a covering manner, the first and second free ends 241, 242 of the pair of main shafts 24 respectively extend out of two ends of the housing 23, and the first and fourth gaskets 291, 294 are abutted against two ends of the housing 23 and cannot move in the length direction of the main shafts 24. The third pad 293 is movable in the longitudinal direction of the main shaft 24.

The movable element 281 of the rotation control element is abutted against one end of the spring 27 through the third gasket 293, and the movable element includes a main body 2811 provided with two third through holes and a plurality of protrusions formed by extending towards one end of the fixed element 282. The protrusion includes a pair of first lugs 2812 at upper and lower positions of the pair of main shafts 24, and a pair of second lugs 2813 and third lugs 2814 located at lateral outer sides of the pair of main shafts 24. The side edges of one tab 2812 of the pair of first tabs 2812 are vertical wall structures 28121, and the side edges of the other tab 2812 are inclined wall structures 28122. Both side edges of the second and third tabs 2813, 2814 are inclined wall structures (not numbered). The three pairs of tabs 2812, 2813, 2814 define two pairs of bayonet structures 2815, 2817 and 2816, 2818, respectively, on one side of each spindle 24. The bayonets define first bayonets 2815, 2817, the first bayonets 2815, 2817 are arranged in parallel, and the second bayonets 2816, 2818 are arranged in a straight line.

Each fixing member 282 includes a cylinder 2821 having a fourth through hole 2824, and a pair of stoppers 2822 extending from the cylinder 2821 toward one end of the movable member 281, wherein two sidewalls of the pair of stoppers 2822 are inclined wall structures.

Each rotating mechanism corresponds to two pairs of transmission mechanisms 22 and two pairs of fixing seats 21, one pair of fixing seats 21 is sequentially fixed on the first plate part 11 of the folding plate 10 in the length direction of the main shaft 24, and the other pair of fixing seats 21 is fixed on the second plate part 12 of the folding plate 10. The transmission mechanism 22 is connected with the fixed seat 21 and the rotating mechanism. The fixed ends 224 of the four actuators 22 are fixedly connected to the first and second free ends 241, 242 of the pair of spindles 24, so that the fixed ends 224 are fixed relative to the first and second free ends 241, 242. The sliding end 221 of the transmission mechanism 22 is slidably engaged with the fixing seat 21 as described above.

The rotating mechanism is supported by the transmission mechanism 22 and the fixing seat 21 and suspended above the outer surface of the folding plate 10 without contacting the surface of the folding plate 10. Preferably, two sets of folding mechanisms 20 are fixed on the folding plate 10 along the same linear direction, and three or four folding mechanisms 20 may be optionally provided if the length of the foldable display device is too long.

The specific operation principle of the foldable display device of the embodiment is as follows:

when the folding screen 30 is folded together with the folding plate 10, the folding area 33 of the folding screen 30 is bent with the bar-shaped body 13 of the folding plate 10, and the change of the bar-shaped body 13 is as described above and will not be described herein. Describing the matching movement of the folding mechanism 20 in detail, the pair of spindles 24 rotate in opposite directions with respect to each other, and the gears 26 respectively fixed to the pair of spindles 24 rotate with the opposite rotation of the spindles, so that the pair of gears 26 can control the balance of the folding movement and prevent the folding screen 30 from being damaged due to irregular rotation. During the rotation, the sliding shaft 223 of the transmission mechanism 22 moves in the arc-shaped track 213 of the fixed seat 21, and the arc-shaped track 213 is configured to conform to the optimal folding path of the folding area 33 of the folding screen 30. When the rotary control members 281 and 282 are in an initial state, the clamping blocks 2822 of the pair of fixing members 282 are respectively clamped in the pair of first clamping openings 2815 and 2817 of the movable member 281, when the rotary control members 281 and 282 are rotated, the fixing members 282 rotate along with the spindle 24, the clamping blocks 2822 pass through the top ends of the first protruding sheets 2812 and the second protruding sheets 2816 and 2818 along the inclined wall structures 28122 of the first protruding sheets 2812 and the third protruding sheets 2813 and then are clamped in the second clamping openings 2816 and 2818, and a hand feeling or a sound for prompting that the rotary control members are folded in place is generated; at this time, the movable element 281 compresses the spring 27 backward under the pushing of the fixing element 282 along the inclined wall structure 28122 to deform the spring 27, and then the movable element 281 causes the catching block 2822 to catch into the second catching openings 2816 and 2818 under the restoring force of the spring 27. When the folding display device needs to be unfolded, the display device can be reversely rotated, and the description is omitted here. Vertical wall structures 28121 are provided on both sides of one of the first tabs 2812 to make the folded display device non-rotatable in the other direction to prevent the device from being damaged by incorrect rotation.

The folding plate 10 of the folding display device of the embodiment is corresponding to the folding area 33 of the folding screen 30 and is provided with a plurality of mutually independent and mutually spaced strip-shaped bodies 13 so as to solve the problem that the arc length of an inner arc and an outer arc caused when the folding screen 30 is bent changes, and the arrangement of the strip-shaped bodies 13 can avoid the extrusion problem of the outer arc surface of the folding screen 30 caused by the change of the bending arc length of the folding plate 10.

The folding display device of this embodiment controls the balance of the folding process by the arrangement of the folding mechanism 20, and adapts to the optimal folding path of the folding screen 30 through the arc-shaped track 213 of the fixing base 21. Meanwhile, the rotating control pieces 281 and 282 prevent wrong rotation and provide a prompt for folding in place, so that the user experience effect of the product is enhanced.

Please refer to the second embodiment shown in fig. 14 to 22;

referring to fig. 14, 15 and 16, a foldable display device according to a second embodiment of the present invention includes a foldable plate 10, a protection plate 50 fixed to a first surface of the foldable plate 10, a folding mechanism 40 fixed to the protection plate 50, a foldable screen 30 attached to a second surface of the foldable plate 10, and a housing 62 for housing the folding mechanism 40 and the protection plate 50. The housing 62 is provided with components such as a circuit board.

The folding plate 10 is described in detail in the first embodiment, and is not described in detail here.

The housing 60 includes a first housing 61 and a second housing 62, and the first housing 61 and the second housing 62 are foldable.

Referring to fig. 17, the protection plate 50 includes a first protection plate 51 integrally fixed to the first plate portion 11 of the folding plate 10 and a second protection plate 52 integrally fixed to the second plate portion 12. The thickness of the protection plate 50 is substantially equal to the thickness of the folding plate 10. The first protection plate 51 and the second protection plate 52 are separated from each other independently, an upward bending portion 54 is formed at one end of the first protection plate 51 close to the second protection plates 51 and 52 or one end of the second protection plate 52 close to the first protection plate 51, and the tail end of the bending portion 54 is located above the end portion of the second protection plate 52 or the first protection plate 51. A gap 53 is formed below the bent portion. The broken portion (i.e., the bent portion 54) of the first and second protective plates 51 and 52 is located above the narrow strip-shaped body 133. When the foldable plate is folded, the protection plate 50 is folded from the position of the bending portion 54, and the first protection plate 51 and the second protection plate 52 do not generate a folding arc surface due to folding, so that the situation that the arc length is reduced to extrude the foldable plate 10 is avoided. When the foldable display device is unfolded, the strip-shaped bodies 13 all contact the protection plate 50, so that the folded screen 30 is protected in a state that part of the strip-shaped bodies 13 are suspended in the air when the foldable display device is in an unfolded state, and the folded screen 30 is prevented from being damaged due to suspension in a clicking state.

The surface of each strip-shaped body 13 is entirely or partially abutted against the protection plate 50 in the unfolded state, and the strip-shaped body 13 corresponding to the gap 53 below the bending portion 54 is also partially abutted against the protection plate 50. The protection plate 50 may be fixed to the folding plate 10 by glue, rivets, etc., and the bar 13 located at the middle of the folding region 33 of the folding screen 30 is not bonded to the protection plate 50. Or the strip 13 is not bonded integrally with the protective plate 50 but is separated and independent.

As shown in fig. 16 to fig. 22, the folding mechanism 40 includes two pairs of fixing bases 41 fixed to the first and second protection plates 51, 52, a rotating mechanism and a transmission mechanism 42 connecting the fixing bases 41 and the rotating mechanism.

The fixing base 41 includes a base 411, two side walls 412 formed by bending and extending upwards from two sides of the base 411, and a fixing shaft 413 passing through the two side walls 412 and fixed. There is a distance between the fixed shaft 413 and the base 411. The base 411 is formed with a fixing hole 414 to fix the base 411 to the protection plate 50 and the folding plate 10.

The transmission mechanism 42 includes a fixed end 422, a sliding end 423, and a connecting portion 421 connecting the fixed end 422 and the sliding end 423. The sliding end 423 is provided with an arc-shaped track 424, and the arc-shaped track 424 is similar to the arc-shaped track provided on the fixing base 21 in the first embodiment, so as to conform to the optimal folding path of the folding screen 30. The arc-shaped track 424 is first disposed between the two sidewalls 412 of the fixing base 41, and then the fixing shaft 43 is fixed to the two sidewalls 412 after passing through the first sidewall 412, the arc-shaped track 424, and the second sidewall 412. The arc-shaped track 424 moves around the fixed shaft 413.

The rotating mechanism includes a base 45 having a pair of through holes 456, a pair of spindles 44 inserted into the through holes, a pair of gears 46 sleeved on the spindles 44, a spring 47, a first gasket 491, a second gasket 492, a rotating control member 48 installed in the base 45 and interfering with the spindles 44, and a cover 43 covering the base 45.

The housing 45 includes a bottom wall 451, a first vertical wall 453, a second vertical wall 454, a third vertical wall 455, a first installation space 457 between the first vertical wall 453 and the second vertical wall 454, and a second installation space 452 between the second vertical wall 454 and the third vertical wall 455. A partition wall 458 is disposed in the middle of the second mounting space 452, and the second mounting space 452 is divided into two mounting spaces by the partition wall 458, each mounting space corresponding to one through hole 456. A protrusion 4521 is disposed on the bottom wall 451 of the second mounting space 452.

The first shim 491, the pair of gears 46, the second shim 492 and the spring 47 are sequentially sleeved on the pair of main shafts 44 and assembled in the first installation space 457. The first shim 491 abuts against the first vertical wall 453, the second shim 492 is located between the gear 46 and the spring 47, and the other end of the spring 47 abuts against the second vertical wall 454.

The pair of spindles 44 further includes first and second end portions 441, 442 extending from the through hole 456 to opposite ends of the base 45. The fixed end 422 of the transmission mechanism 42 is fixed to the first and second ends 441, 442 of the main shaft 44, respectively.

The rotation control member 48 includes a plate-shaped base 481 and an elastic piece 482 bent from one end of the plate-shaped base 481. The plate-shaped base 481 is provided with a hole structure 483 of the bump 4521 sleeved on the bottom wall 451 of the second mounting space 452. The plate-shaped base 481 and the elastic piece 482 are in a V-shaped structure, and the bottom of the V-shape faces the partition wall 458. A recess 443 is formed at a position of the pair of spindles 44 corresponding to the second mounting space 457, and the flexible sheet 482 interferes with the recess 443, so that the pair of spindles 44 can only rotate along a free end of the flexible sheet 482 and cannot rotate toward a bottom of the flexible sheet 482.

When the folding display device is folded, the housing 60, the folding plate 10 and the protection plate 50 rotate, the transmission mechanism 42 is driven by the fixing seat 41 fixed on the protection plate 50, the arc-shaped track 424 winds the fixing shaft 413 moves and drives the pair of main shafts 44 to rotate reversely, and the gear 47 controls the rotating speed of the pair of main shafts 44 to be balanced so as to prevent the folding screen 30 from being damaged due to unbalanced rotation.

The folding display device's of this application embodiment two folded sheet 10 is gone up and is covered protection shield 50, protection shield 50 sets up mutually independent first, second protection shield 51, 52 to at the department of disconnection, make first, second protection shield 51, any one of 52 bend at the free end and form the portion 54 of bending, under the circumstances that protection shield 50 is folding is guaranteed, when the expansion state, folded sheet 10 can support completely in on protection shield 50, prevent folded screen 30 is unsettled and impaired because of clicking.

Folding mechanism 40 structure is simpler relatively, and can realize better rotational stability, just set up rotation control 48 ingeniously on folding mechanism 40, prevent that the user from folding the direction by mistake and damaging folding screen.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. The utility model provides a folded sheet for the folding of cooperation folding screen, the folding screen includes first, the non-folding district of second and is located folding district between first, the non-folding district of second, its characterized in that, the folded sheet includes first board, second board and is located a plurality of bars between first board and the second board, a plurality of bars are mutually independent and all have the clearance between two adjacent bars, first board, second board and a plurality of bars are connected into a whole, the first, the non-folding district of second of folding screen respectively with first, the fixed as an organic whole of second board, the folding district of folding screen corresponds the bar, the folding district with separate between the bar and unsettled, when folding screen is folding, a plurality of the bar is folded and is corresponded the arc flexion of folding district.

2. A folding board as claimed in claim 1, wherein, in the folded state, the gap between the strips on the side closer to the folding screen is narrowed and the gap on the side of the strips remote from the folding screen is widened.

3. A folding board as claimed in claim 2, wherein said strip includes first and second wide strips adjacent to said first and second board portions, respectively, and a narrow strip between said first and second wide strips.

4. A folding board as claimed in claim 3, wherein the first and second board portions and the strip-shaped body of the folding board are bonded together by glue to form a unitary structure.

5. A folding board according to claim 4, characterized in that said glue covers said first and second board portions and the surface of said strip remote from said screen, said glue penetrating both between said strips and said first and second board portions.

6. A folding board as claimed in claim 5, characterized in that said glue penetrates into said gaps to a depth not greater than half the thickness of said strips.

7. The folding board of claim 6, wherein said folding board has a thickness of 0.1-0.4mm, said first and second wide strips have a width of 1.2-1.8mm, and said narrow strips have a width of 0.2-0.6 mm.

8. The folding board of claim 7, wherein the width of the gap between said strips and said first and second board portions is 0.10-0.12 mm.

9. The folding board of claim 8, wherein said glue is 0.1-0.3mm thick on the surfaces of said first and second board portions and said strip.

10. A folding display device, comprising a folding plate according to any one of claims 1 to 9.

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