阅读说明：本技术 转轴支撑结构、显示装置及其装配方法 (Rotating shaft supporting structure, display device and assembling method of display device ) 是由 孙宝锋 祝尚杰 于 2020-05-19 设计创作，主要内容包括：本发明涉及显示技术领域,提出一种转轴支撑结构、显示装置及装配方法。转轴支撑结构包括：刚性支撑部包括多个相互平行设置的刚性支撑条,相邻两个刚性支撑条之间设置有第一间隙,刚性支撑条的长度方向与柔性显示面板的折弯方向垂直,刚性支撑部在柔性显示面板上的正投影位于折弯区域内；两个第一支撑板与刚性支撑条相互平行设置,且两个第一支撑板对应位于刚性支撑部的相对两侧,第一支撑板与刚性支撑部之间设置有第二间隙,第一支撑板在柔性显示面板上的正投影位于平直区域内；柔性包覆层包覆于刚性支撑部和支撑板外,将刚性支撑部的靠近柔性显示面板的一侧和支撑板的靠近柔性显示面板的一侧连接为一体。使柔性显示面板折弯区域不容易翘曲。(The invention relates to the technical field of display, and provides a rotating shaft supporting structure, a display device and an assembling method. The pivot bearing structure includes: the rigid supporting part comprises a plurality of rigid supporting bars which are arranged in parallel, a first gap is formed between every two adjacent rigid supporting bars, the length direction of each rigid supporting bar is perpendicular to the bending direction of the flexible display panel, and the orthographic projection of the rigid supporting part on the flexible display panel is positioned in the bending area; the two first supporting plates and the rigid supporting plates are arranged in parallel, the two first supporting plates are correspondingly positioned on two opposite sides of the rigid supporting part, a second gap is formed between the first supporting plates and the rigid supporting part, and the orthographic projection of the first supporting plates on the flexible display panel is positioned in a straight area; the flexible coating layer is coated outside the rigid supporting part and the supporting plate, and one side of the rigid supporting part close to the flexible display panel and one side of the supporting plate close to the flexible display panel are connected into a whole. The bending area of the flexible display panel is not easy to warp.)

1. A hinge support structure for carrying a flexible display panel, the flexible display panel comprising a flat region and at least one bent region, the hinge support structure comprising:

the rigid support part comprises a plurality of rigid support bars, the rigid support bars are arranged in parallel, a first gap is formed between every two adjacent rigid support bars, the length direction of each rigid support bar is perpendicular to the bending direction of the flexible display panel, and the orthographic projection of the rigid support part on the flexible display panel is located in the bending area;

the two first supporting plates are parallel to the rigid supporting plates and correspondingly located on two opposite sides of the rigid supporting parts, a second gap is formed between the first supporting plates and the rigid supporting parts, and orthographic projections of the two first supporting plates on the flexible display panel are located in the straight area;

and the flexible coating layer is coated outside the rigid supporting part and the two supporting plates, and one side of the rigid supporting part close to the flexible display panel and one side of the two supporting plates close to the flexible display panel are connected into a whole.

2. The spindle support structure according to claim 1, further comprising:

the second supporting plate is arranged on one side, close to the flexible display panel, of the rigid supporting portion, and a plurality of through holes are distributed in the second supporting plate in an array mode.

3. The supporting structure for a hinge as claimed in claim 2, wherein the flexible covering layer covers the second supporting plate and fills the plurality of through holes.

4. The hinge support structure according to claim 2, wherein the through hole is a waist circular hole, and a length direction of the waist circular hole is perpendicular to a bending direction of the flexible display panel.

5. The supporting structure for a rotation shaft according to claim 4, wherein the length of the waist circular holes is greater than or equal to 2mm and less than or equal to 6mm, the width of the waist circular holes is greater than or equal to 0.1mm and less than or equal to 0.6mm, and the interval between two adjacent waist circular holes is greater than or equal to 0.1mm and less than or equal to 0.5 mm.

6. The hinge support structure of claim 1, wherein the number of the rigid support bars is three, one surface of the rigid support bar close to the flexible display panel is a partial cylindrical surface, the partial cylindrical surface protrudes toward one side of the flexible display panel, and a central angle of the partial cylindrical surface is equal to or less than 60 degrees.

7. The hinge support structure of claim 6, wherein a surface of the flexible cover layer away from the flexible display panel is a partial cylindrical surface, a side of the partial cylindrical surface facing the flexible display panel is recessed, and a central angle of the partial cylindrical surface is equal to or less than 60 degrees.

8. The spindle support structure of claim 6, wherein the flexible coating comprises:

the first inclined surface is positioned on the side surface, close to the other adjacent rigid supporting strip, of the rigid supporting strip, and the inclination angle of the first inclined surface is larger than or equal to 22.5 degrees;

the second inclined plane is positioned on the side face, close to the first supporting plate, of the rigid supporting strip, and the inclination angle of the second inclined plane is larger than or equal to 22.5 degrees.

9. The spindle support structure of claim 8, wherein the flexible coating further comprises:

and the third inclined surface is positioned on the side surface, close to the rigid support part, of the first supporting plate, and the inclination angle of the third inclined surface is greater than or equal to 22.5 degrees.

10. The spindle support structure according to claim 1, further comprising:

the sliding plate is arranged on one side, far away from the rigid supporting part, of the first supporting plate, and the orthographic projection of the sliding plate on the flexible display panel is located in the straight area;

and one end of the elastic piece is connected with the sliding plate, and the other end of the elastic piece is connected with the middle frame.

11. The spindle support structure according to claim 10, wherein the elastic member is a compression spring.

12. A display device, comprising:

a middle frame;

the rotating shaft mechanism is arranged on the middle frame, and the middle frame can be folded along with the rotation of the rotating shaft mechanism;

the spindle support structure according to any one of claims 1 to 11, provided above the middle frame and the spindle mechanism;

and the flexible display panel is arranged on the rotating shaft supporting structure and the middle frame.

13. A method of assembling a display device, comprising:

providing a middle frame and a rotating shaft mechanism, and installing the rotating shaft mechanism on the middle frame;

stretching the flexible coating layer and fixing the flexible coating layer on the rotating shaft mechanism;

placing a sliding plate on the middle frame, and fixing the sliding plate and an elastic piece on the middle frame;

pushing the sliding plate to enable one side face of the sliding plate to abut against one side face of the first supporting plate;

and bonding a flexible display panel with the flexible coating layer, the sliding plate and the middle frame.

Technical Field

The invention relates to the technical field of display, in particular to a rotating shaft supporting structure, a display device comprising the rotating shaft supporting structure and an assembling method of the display device.

Background

Nowadays, the flexible display panel gradually enters the visual field of consumers, and the foldability of the flexible display panel greatly expands the application field of the display panel. However, at present, the flexible display panel still faces a plurality of problems, for example, when the flexible display panel is folded and bent for many times and then flattened, a bending area of the flexible display panel is easy to warp to cause a crease, which affects the surface flatness of the whole flexible display panel; the problem of poor touch due to membrane layer separation is also easily caused by warping, and a screen can be damaged when the problem is serious, so that the operation experience of a user is reduced.

Therefore, it is necessary to research a new hinge support structure, a display device including the same, and an assembling method of the display device.

The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The present invention is directed to overcome the above-mentioned disadvantage that the bending region is easily warped in the prior art, and provides a hinge support structure in which the bending region is not easily warped, a display device including the hinge support structure, and an assembling method of the display device.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

According to an aspect of the present disclosure, there is provided a hinge support structure for carrying a flexible display panel including a flat region and at least one bent region, the hinge support structure including:

the rigid support part comprises a plurality of rigid support bars, the rigid support bars are arranged in parallel, a first gap is formed between every two adjacent rigid support bars, the length direction of each rigid support bar is perpendicular to the bending direction of the flexible display panel, and the orthographic projection of the rigid support part on the flexible display panel is located in the bending area;

the two first supporting plates are parallel to the rigid supporting plates and correspondingly located on two opposite sides of the rigid supporting parts, a second gap is formed between the first supporting plates and the rigid supporting parts, and orthographic projections of the two first supporting plates on the flexible display panel are located in the straight area;

and the flexible coating layer is coated outside the rigid supporting part and the two supporting plates, and one side of the rigid supporting part close to the flexible display panel and one side of the two supporting plates close to the flexible display panel are connected into a whole.

In an exemplary embodiment of the present disclosure, the rotation shaft supporting structure further includes:

the second supporting plate is arranged on one side, close to the flexible display panel, of the rigid supporting portion, and a plurality of through holes are distributed in the second supporting plate in an array mode.

In an exemplary embodiment of the disclosure, the flexible covering layer is wrapped outside the second support plate and filled into the plurality of through holes.

In an exemplary embodiment of the present disclosure, the through hole is a waist-round hole, and a length direction of the waist-round hole is perpendicular to a bending direction of the flexible display panel.

In an exemplary embodiment of the present disclosure, the length of the waist circular holes is greater than or equal to 2mm and less than or equal to 6mm, the width of the waist circular holes is greater than or equal to 0.1mm and less than or equal to 0.6mm, and the interval between two adjacent waist circular holes is greater than or equal to 0.1mm and less than or equal to 0.5 mm.

In an exemplary embodiment of the present disclosure, the number of the rigid supporting bars is three, one surface of the rigid supporting bar, which is close to the flexible display panel, is a partial cylindrical surface, the partial cylindrical surface protrudes towards one side of the flexible display panel, and a central angle corresponding to the partial cylindrical surface is less than or equal to 60 degrees.

In an exemplary embodiment of the present disclosure, a surface of the flexible covering layer, which is away from the flexible display panel, is a partial cylindrical surface, one side of the partial cylindrical surface, which faces the flexible display panel, is recessed, and a central angle corresponding to the partial cylindrical surface is less than or equal to 60 degrees.

In an exemplary embodiment of the present disclosure, the flexible coating layer includes:

the first inclined surface is positioned on the side surface, close to the other adjacent rigid supporting strip, of the rigid supporting strip, and the inclination angle of the first inclined surface is larger than or equal to 22.5 degrees;

the second inclined plane is positioned on the side face, close to the first supporting plate, of the rigid supporting strip, and the inclination angle of the second inclined plane is larger than or equal to 22.5 degrees.

In an exemplary embodiment of the present disclosure, the flexible cover further comprises:

and the third inclined surface is positioned on the side surface, close to the rigid support part, of the first supporting plate, and the inclination angle of the third inclined surface is greater than or equal to 22.5 degrees.

In an exemplary embodiment of the present disclosure, the rotation shaft supporting structure further includes:

the sliding plate is arranged on one side, far away from the rigid supporting part, of the first supporting plate, and the orthographic projection of the sliding plate on the flexible display panel is located in the straight area;

and one end of the elastic piece is connected with the sliding plate, and the other end of the elastic piece is connected with the middle frame.

In an exemplary embodiment of the present disclosure, the elastic member is a compression spring.

According to an aspect of the present disclosure, there is provided a display device including:

a middle frame;

the rotating shaft mechanism is arranged on the middle frame, and the middle frame can be folded along with the rotation of the rotating shaft mechanism;

the rotating shaft supporting structure is arranged on the middle frame and the rotating shaft mechanism;

and the flexible display panel is arranged on the rotating shaft supporting structure and the middle frame.

According to an aspect of the present disclosure, there is provided an assembling method of a display device, including:

providing a middle frame and a rotating shaft mechanism, and installing the rotating shaft mechanism on the middle frame;

stretching the flexible coating layer and fixing the flexible coating layer on the rotating shaft mechanism;

placing a sliding plate on the middle frame, and fixing the sliding plate and an elastic piece on the middle frame;

pushing the sliding plate to enable one side face of the sliding plate to abut against one side face of the first supporting plate;

and bonding a flexible display panel with the flexible coating layer, the sliding plate and the middle frame.

According to the technical scheme, the invention has at least one of the following advantages and positive effects:

according to the rotating shaft supporting structure, a rigid supporting part is arranged in a bending area of a flexible display panel for supporting, a first supporting plate is arranged in a straight area of the flexible display panel for supporting, and a flexible coating layer is coated outside the rigid supporting part and the first supporting plate; the flexible coating layer has better flexibility and stretchability, is easier to match the deformation of the flexible display panel in the bending and unfolding processes, solves the problem that the bending area of the flexible display panel is easy to warp, and also solves the problem of sliding gaps between the flexible display panel and the edge of the middle frame; rigid support portion and first backup pad provide the support nature, and rigid support portion and first backup pad and flexible display panel direct contact are avoided to flexible coating, reduce crooked in-process pivot district to flexible display panel's effort, and the crease problem obviously improves.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a schematic structural view of an exemplary embodiment of a spindle support structure according to the present invention;

FIG. 2 is a schematic perspective view of FIG. 1;

FIG. 3 is a schematic perspective view of the back side of FIG. 2;

FIG. 4 is an enlarged partial schematic view of the portion indicated by I in FIG. 1;

FIG. 5 is a schematic structural view of another exemplary embodiment of a spindle support structure according to the present invention;

FIG. 6 is a schematic structural view of the second support plate of FIG. 5;

FIG. 7 is a schematic view showing a simulation of a steel sheet model in the related art;

FIG. 8 is a schematic diagram of a simulation of the related art steel sheet model of FIG. 7 after drawing;

FIG. 9 is a schematic view of a model simulation of the spindle support structure of the present invention;

FIG. 10 is a schematic drawing of a simulation of the model of the spindle support structure of the present invention of FIG. 9 after stretching;

FIG. 11 is a simulation diagram of a single-point touch deformation of the hinge support structure without the second support plate according to the present invention;

FIG. 12 is a schematic diagram illustrating a simulation of a single-point touch deformation of a hinge support structure including a second support plate according to the present invention;

FIG. 13 is a schematic perspective view of the spindle support structure of the present invention mounted to a center frame;

FIG. 14 is a perspective view of the back of FIG. 13;

fig. 15 is a flow schematic block diagram of an exemplary embodiment of a method of assembling a display device of the present invention.

The reference numerals of the main elements in the figures are explained as follows:

1. a rigid support bar; 2. a first support plate;

3. a flexible coating layer; 31. a first inclined surface; 32. a first inclined surface; 33 a third inclined surface;

4. a second support plate; 41. a lumbar circular hole;

5. a slide plate; 6. a pressure spring; 7. a middle frame; 8. a rotating shaft mechanism.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

In the related art, the warping problem of the bending area of the flexible display panel is solved by adding a steel sheet in a rotating shaft area and adding a magnet in a middle frame, and the magnet adsorbs the steel sheet. The steel sheet is additionally arranged in the rotating shaft area, so that the restoring force of the display panel can be improved, the warping problem of a bending area is solved to a certain extent, and the flatness of the whole machine during flattening is ensured; but actual effect shows, the regional warpage problem of bending of flexible display panel can not be solved to steel sheet and magnet, and the root cause lies in that the binding face of steel sheet and flexible display panel is difficult to match the deflection of the in-process flexible display panel that opens and shuts, and the pivot district adds the steel sheet simultaneously and leads to bending the in-process, and the tensile force that flexible display panel receives is too big, and the in-process steel sheet that opens and shuts continuously extrudes flexible display panel, leads to flexible display panel to produce obvious crease, shortens flexible display panel life-span. And because the solid glue of the flexible display panel and the steel sheet is not enough to compensate the deformation of the flexible display panel, and the inextensibility of the steel sheet, a mechanism formed by the steel sheet and the magnet is difficult to match with the deformation of the flexible display panel in the bending process, so that the boundary of the flexible display panel slides to generate a gap, and the visual effect is influenced.

In the present exemplary embodiment, first, a shaft support structure is provided, which may include a rigid support portion, a flexible coating layer 3, and two first support plates 2, as shown in fig. 1, 2, and 3. The rigid supporting part comprises a plurality of rigid supporting bars 1, the rigid supporting bars 1 are arranged in parallel, a first gap is formed between every two adjacent rigid supporting bars 1, the length direction of each rigid supporting bar 1 is perpendicular to the bending direction of the flexible display panel, and the orthographic projection of the rigid supporting part on the flexible display panel is located in the bending area; the two first supporting plates 2 and the rigid supporting plate 1 are arranged in parallel, the two first supporting plates 2 are correspondingly positioned on two opposite sides of the rigid supporting part, a second gap is arranged between the first supporting plates 2 and the rigid supporting part, and orthographic projections of the two first supporting plates 2 on the flexible display panel are positioned in the straight area; the flexible coating layer 3 is coated outside the rigid supporting part and the two supporting plates to connect the rigid supporting part and the two supporting plates into a whole.

In the present exemplary embodiment, the rigid support portion includes three rigid support bars 1, the three rigid support bars 1 are disposed in parallel, and a first gap is disposed between two adjacent rigid support bars 1, and the first gap is approximately 0.2mm to 1.5 mm.

The cross-sectional shape of the rigid support bar 1 perpendicular to the longitudinal direction thereof may be a truncated fan shape (i.e., a triangle at the top of the fan shape is truncated). The method specifically comprises the following steps: one side of the rigid supporting bar 1 close to the flexible display panel is arranged as a partial cylindrical surface, and the central angle of the partial cylindrical surface is equal to 60 degrees or slightly less than 60 degrees. The sum of the central angles of partial cylindrical surfaces of the three rigid support bars 1 in the bending state is about 180 degrees, so that the rotating shaft area is closer to a complete semi-cylindrical surface in the bending state, and a better substrate is provided for the flexible display panel. The side of the rigid support bar 1 facing away from the flexible display panel may be arranged as a plane.

For the middle rigid support strip 1, two side faces of the rigid support strip 1 close to the other adjacent rigid support strip 1 are provided with inclined faces, and the inclined angle is 22.5 degrees. For the rigid supporting strips 1 at two sides, one side surface of the rigid supporting strip 1 close to the other adjacent rigid supporting strip 1 and one side surface of the rigid supporting strip 1 close to the first supporting strip 2 are provided with inclined surfaces, and the inclined angle is 22.5 degrees. The first support plate 2 is also provided with an inclined surface on the surface close to the rigid support part, and the inclination angle is 22.5 degrees.

Because each rigid support bar 1 has two inclined planes, three rigid support bars 1 have six inclined planes, and the side of first support bar 2 that is close to rigid support bar 1 also needs to be set up as the inclined plane, consequently has eight inclined planes to cooperate each other, and the inclination angle of inclined plane is more than or equal to 180 degrees/8 ═ 22.5 degrees.

So set up, make pivot bearing structure when the biggest state of bending (bending 180 degrees), each side of rigid support bar 1 and with the side of first backup pad 2 can laminate completely, provide the support for flexible display panel.

In addition, it is understood that the inclination angle of the side surface of the rigid support bar 1 and the side surface of the first support plate 2 may be greater than 22.5 degrees. As long as no interference is generated at the time of bending.

The rigid support bar 1 may be provided with a groove for cooperating with the rotating shaft mechanism 8.

In other exemplary embodiments of the present invention, the cross-sectional shape of the rigid support bar 1 perpendicular to the length direction thereof may be a segment of a circular ring. The method specifically comprises the following steps: one side of the rigid supporting bar 1 close to the flexible display panel is arranged as a partial cylindrical surface, and the central angle of the partial cylindrical surface is equal to 60 degrees or slightly less than 60 degrees. The sum of the central angles of partial cylindrical surfaces of three rigid supporting strips 1 in the rotating shaft area in the bending state is about 180 degrees, so that the rotating shaft area in the bending state is closer to a complete semi-cylindrical surface, and a better substrate is provided for the flexible display panel.

The side of the rigid support bar 1 away from the flexible display panel is arranged as a partial cylinder with a central angle equal to 60 degrees or slightly less than 60 degrees. The sum of the central angles of partial cylindrical surfaces of three rigid supporting strips 1 in the rotating shaft area in the bending state is about 180 degrees, so that the rotating shaft area is closer to a complete semi-cylinder in the bending state. It can be understood that, under the condition that the surface of the rigid supporting bar 1 away from the display panel is set to be a plane, when the flexible coating layer 3 is formed subsequently, the surface of the flexible coating layer 3 away from the flexible display panel is set to be a partial cylindrical surface, and the above effects can also be achieved.

On one hand, the sharp corner position is not easy to be formed by injection molding in the injection molding process, and the round chamfer is convenient to be arranged to form the flexible coating layer 3 subsequently; on the other hand, the damage to the flexible coating layer 3 at the sharp corner position in the subsequent bending process is avoided.

In addition, in some other exemplary embodiments of the present invention, the number of the rigid supporting bars 1 may be four, in which case, a surface of the rigid supporting bar 1 close to the display panel is provided as a partial cylindrical surface, and a central angle of the partial cylindrical surface is equal to 45 degrees or slightly less than 45 degrees. The side surfaces of the rigid support bar 1 and the first support plate 2 are inclined planes, and the inclination angle is more than or equal to 18 degrees. Of course, the number of the rigid support bars 1 may be two, five or more, and specific data of the rigid support bars 1 are not described herein again and can be obtained through the above calculation.

In the present exemplary embodiment, orthographic projections of the two first support plates 2 on the flexible display panel are located in a flat area, the two first support plates 2 and the rigid support bar 1 are arranged in parallel, the parallel arrangement means that one side of the first support plate 2 close to the rigid support bar 1 is parallel to the central axis of the rigid support bar 1, and the two first support plates 2 are located at two opposite sides of the rigid support portion, that is, one first support plate 2 is arranged at one side of the rigid support portion; a second gap is arranged between the rigid support bar 1 and the first support plate 2, the second gap is a spacing space between one surface of the first support plate 2 close to the rigid support bar 1 and one surface of the rigid support bar 1 close to the first support plate 2, and the second gap is about 0.2mm-1.5 mm. The first support plate 2 may provide a flat surface for the non-bent region of the flexible display panel. The one side of first backup pad 2 that is close to flexible display panel and the one side that is close to flexible display panel of rigid support bar 1 can be located the coplanar basically, the follow-up comparatively smooth flexible coating 3 of formation of being convenient for. The side of the first support plate 2 adjacent to the rigid support portion is provided as an inclined surface, the angle of inclination of which has been described in detail above and therefore will not be described further herein.

In the present exemplary embodiment, the flexible covering layer 3 covers the rigid support portion and the two support plates, and connects the side of the rigid support portion close to the flexible display panel and the side of the two support plates close to the flexible display panel into a whole. That is, the flexible coating layer 3 can completely coat the rigid support portion and the two support plates, and the flexible coating layer 3 is formed in a first gap between the two rigid support bars 1 and a second gap between the first support plate 2 and the rigid support portion. Referring to fig. 3, the flexible cover layer 3 is a thin film structure and is only located at one side of the first gap and the second gap, which is close to the flexible display panel, so that one side of the rigid support portion, which is close to the flexible display panel, and one sides of the two support plates, which are close to the flexible display panel, are connected into a whole, thereby providing a flat substrate for the flexible display panel; the rotating shaft supporting structure has better flexibility and stretchability, the deformation of the flexible display panel in the bending and unfolding processes is more easily matched, and the problem of a sliding gap between the flexible display panel and the edge of the middle frame 7 is solved; rigid support portion and first backup pad 2 provide the support nature, and rigid support portion and first backup pad 2 and flexible display panel direct contact are avoided to flexible coating 3, reduce crooked in-process pivot district to flexible display panel's effort, and the crease problem obviously improves.

The flexible coating layer 3 is manufactured by a mold injection molding process. Referring to fig. 4, the flexible clad layer may include a first inclined surface 31, a second inclined surface 32, and a third inclined surface 33; the first inclined surface 31 is positioned on the side surface of the rigid support bar 1 close to the other adjacent rigid support bar 1, and the inclination angle alpha of the first inclined surface 31 is greater than or equal to 22.5 degrees; the second inclined surface 32 is located on the side surface of the rigid support bar 1 close to the first support plate 2, and the inclination angle beta of the second inclined surface 32 is greater than or equal to 22.5 degrees. The third inclined surface 33 is positioned on the side surface of the first support plate 2 close to the rigid support part, and the inclination angle gamma of the third inclined surface 33 is larger than or equal to 22.5 degrees.

Under the condition that the inclination angles of the side surfaces of the rigid supporting bar 1 and the first supporting plate 2 are set to be more than or equal to 22.5 degrees, the flexible coating layer 3 can be uniformly covered outside the rigid supporting bar and the two first supporting plates 2, so that the first inclined surface 31, the second inclined surface 32 and the third inclined surface 22 are all more than or equal to 22.5 degrees. Of course, when the inclination angles of the side surfaces of the rigid support bar 1 and the first support plate 2 are not satisfactory, the flexible coating layer 3 can be set to different thicknesses as required, so that the first inclined surface 31, the second inclined surface 32 and the third inclined surface 33 are all 22.5 degrees or more.

In other exemplary embodiments of this aspect, the spindle support structure may further include a second support plate 4. Referring to fig. 5 and 6, the second support plate 4 is disposed on a side of the rigid support portion close to the flexible display panel, and a plurality of through holes are arrayed on the second support plate 4. The flexible coating layer 3 is coated outside the second support plate 4 and is filled in the plurality of through holes.

Specifically, the method comprises the following steps: the through hole may be a kidney hole 41. Referring to fig. 6, a plurality of rows of the waist circular holes 41 are provided in the second support plate 4, and the row of the waist circular holes 41 includes a plurality of waist circular holes 41. The oval holes 41 in two adjacent columns are arranged in a staggered manner, and the arrangement modes of the oval hole 41 groups in the odd-numbered columns are completely the same, and the arrangement modes of the oval hole 41 groups in the even-numbered columns are completely the same. The oval holes 41 in the even and odd columns are arranged in a staggered manner.

The length L of the lumbar circular hole 41 may be 2mm or more and 6mm or less, and the width H of the lumbar circular hole 41 may be 0.1mm or more and 0.6mm or less. The gaps S1 and S2 between two adjacent waist holes 41 may be 0.1mm or more and 0.5mm or less. In addition, the through hole may also be a round hole, a rectangular hole, or the like.

The shaft support structure having the second support plate 4 has both stretchability and support, and the advantages of the shaft support structure of the present invention in stretchability and support are described by simulation.

Referring to a simulation diagram of a steel sheet model in the related art shown in fig. 7, the a end is fixed and the B end is stretched. Referring to a simulation diagram after drawing of a steel sheet model in the related art shown in fig. 8, simulation conditions are as follows: the tensile force 5N acts on the section (end B) to equivalently and uniformly distribute the pressure of-5 Mpa, and under the action of the tensile force 5Mpa, the maximum tensile deformation of the steel sheet is only 4.59e-4mm, which indicates that the steel sheet has no deformation compensation in the opening and closing process, so that the flexible display panel in the bending area is easy to crease along with the increase of the bending times.

Referring to fig. 9, a schematic diagram of a model simulation of the supporting structure of the rotating shaft of the present invention is shown, in which an a end is fixed and a B end is stretched. Referring to a simulation schematic diagram after the model of the rotating shaft supporting structure is stretched shown in fig. 10, simulation conditions are as follows: tensile force 5N acts on cross-section (B end) equivalent equipartition pressure-5 Mpa, and under 5Mpa tensile force, this structure tensile deformation volume is 2.31mm, can provide sufficient deformation compensation volume for flexible display panel, improves flexible display panel warpage and crease problem.

Referring to fig. 11, a simulation diagram of the single-point touch deformation of the rotating shaft supporting structure without the second supporting plate 4 according to the present invention is shown, and simulation conditions are as follows: simulating the touch pressing process of the finger, wherein the vertical pressure of 0.5N acts on the center, the structure boundary is fixed, and the contact area of the finger is 5mm²The equivalent pressure is 0.1Mpa, and the amount of deformation by single-point touch is 7.47mm, so that the exemplary embodiment is excellent in tensile properties, but the support is significantly reduced.

Referring to fig. 12, a simulation diagram of the single-point touch deformation of the rotating shaft supporting structure of the second supporting plate 4 according to the present invention includes the following simulation conditions: simulating the touch pressing process of the finger, wherein the vertical pressure of 0.5N acts on the center, the structure boundary is fixed, and the contact area of the finger is 5mm²The equivalent pressure is 0.1Mpa, and the generated single-point touch deformation is 0.356mm, so that the support is obviously improved.

It can be known from the above design and simulation results that the rotating shaft supporting structure including the second supporting plate 4 has both flexibility and support performance, and can better compensate the deformation of the flexible display panel in the folding and unfolding processes, thereby solving the problems of warping, folding marks and insufficient support of the bending area of the flexible display panel.

In the present exemplary embodiment, referring to fig. 13 and 14, the rotating shaft supporting structure may further include a sliding plate 5 and a pressure spring 6, the sliding plate 5 is disposed on a side of the first supporting plate 2 away from the rigid supporting bar 1; the sliding plate 5 is used for bearing a part of the flexible display panel, and specifically, the flexible display panel borne on the sliding plate 5 is a part of the flexible display panel which needs to be folded along with the rotation of the rotating shaft mechanism 8. One end of a pressure spring 6 is connected with the sliding plate 5, and the other end of the pressure spring 6 is connected with the middle frame 7. The compression spring 6 will continuously provide a pushing force to stretch the sliding plate 5 and the flexible display panel fixed on the sliding plate 5. When the flexible display panel is bent and folded, the sliding plate 5 and the middle frame 7 can not slide, the pressure spring 6 can be compressed due to the sliding of the shell, and due to the thrust action of the spring 204, the sliding plate continuously applies thrust to the flexible display panel in the whole opening and closing process, so that the flatness of the flexible display panel is ensured.

Further, the present exemplary embodiment also provides a display device, which may include a middle frame 7, a hinge mechanism 8, a flexible display panel (not shown in the drawings), and the above-described hinge support structure, as shown in fig. 13 and 14. The rotating shaft mechanism 8 is arranged on the middle frame 7, and the middle frame 7 can be folded along with the rotation of the rotating shaft mechanism 8; the rotating shaft supporting structure is arranged on the middle frame 7 and the rotating shaft mechanism 8; the flexible display panel is arranged on the rotating shaft supporting structure and the middle frame 7. The detailed structure of the rotating shaft supporting structure has been described above, and therefore, the detailed description thereof is omitted.

Further, the present exemplary embodiment also provides an assembling method of a display device, which may include the steps of, as shown in fig. 15:

step S10, providing a middle frame 7 and a rotating shaft mechanism 8, and mounting the rotating shaft mechanism 8 on the middle frame 7;

step S20, the flexible coating layer 3 is fixed on the rotating shaft mechanism 8 after being stretched;

step S30, placing the sliding plate 5 on the middle frame 7, and fixing the sliding plate 5 and the elastic piece on the middle frame 7;

step S40, pushing the sliding plate 5 to make one side surface of the sliding plate 5 abut against one side surface of the first supporting plate 2;

step S50, bonding the flexible display panel with the flexible cover layer 3, the slide plate 5 and the middle frame 7.

In this example embodiment, stretching flexible cover 3 may provide an initial amount of stretch. Push slide 5 to make slide 5's a side and the side of first backup pad 2 support to lean on, can make the elastic component compression, make the elastic component provide continuous thrust for slide 5. The flexible display panel is bonded with the flexible cladding layer 3, the sliding plate 5 and the middle frame 7 by adopting a bonding agent combining solid glue and water glue.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments, and the features discussed in connection with the embodiments are interchangeable, if possible. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

The terms "about" and "approximately" as used herein generally mean within 20%, preferably within 10%, and more preferably within 5% of a given value or range. The amounts given herein are approximate, meaning that the meaning of "about", "approximately" or "approximately" may still be implied without specific recitation.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

In this specification, the terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.

It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the description. The invention is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for carrying out the invention and will enable those skilled in the art to utilize the invention.