CN116863812A - Support plate, flexible display panel and electronic device - Google Patents

Abstract

The present disclosure relates to a support plate, a flexible display panel and an electronic device. The support plate is applied to a flexible display panel and includes a first bending area. The first bending area includes at least one gradient area. Each of the gradient areas includes a plurality of side-by-side and along the thickness direction of the support plate. Recessed first groove portion. The side-by-side direction is perpendicular to the thickness direction of the support plate, and the width of the first groove portion in the same gradient area decreases in the side-by-side direction.

Description

Support boards, flexible display panels and electronic devices

Technical field

The present disclosure relates to the field of terminal technology, and in particular, to a support plate, a flexible display panel and an electronic device.

Background technique

In related technologies, users have increasingly higher requirements for the size of electronic devices. In order to increase the size of the screen to improve the operability and entertainment of electronic devices without affecting the portability of electronic devices, major manufacturers are moving towards foldable devices. Research and development of flexible display screens.

Contents of the invention

The present disclosure provides a support plate, a flexible display panel and an electronic device to solve the deficiencies in related technologies.

According to a first aspect of an embodiment of the present disclosure, a support plate is provided for use in a flexible display panel, the support plate includes: a first bending area, the first bending area includes at least one gradient area, each The gradient zone includes a plurality of first groove portions that are arranged side by side and recessed along the thickness direction of the support plate, and the side-by-side direction is perpendicular to the thickness direction of the support plate; wherein, the first groove portions of the same gradient zone are The width of a groove portion decreases gradually in the side-by-side direction.

Optionally, in at least one of the gradient areas of the first bending area, the width of the first groove portion in the same gradient area decreases along the same direction.

Optionally, in at least one of the gradient areas of the first bending area, the width of the first groove portion of the same gradient area decreases from the middle of the gradient area toward both sides.

Optionally, the extension direction of the first groove portion is perpendicular to both the side-by-side direction and the thickness direction, and parallel to the bending axis direction of the first bending zone.

Optionally, in at least one of the gradient areas of the first bending area, the spacing distance in the side-by-side direction between adjacent first groove portions of the same gradient area remains unchanged; or, in all the gradient areas, In at least one of the gradient areas of the first bending area, the distance between adjacent first groove portions in the same gradient area in the side-by-side direction decreases.

Optionally, in the side-by-side direction of a plurality of first groove portions, in at least one of the gradient areas of the first bending area, the first groove portion of the same gradient area is in the The depth of the depressions in the thickness direction of the support plate is equal or decreasing.

Optionally, in at least one of the gradient areas of the first bending area, the width of the first groove portion provided in the same gradient area decreases evenly with the same difference.

Optionally, the width of the first groove portion in the side-by-side direction is greater than or equal to 1 micron and less than 100 microns.

Optionally, the support plate further includes a second bending area and a transition area. The transition area is provided between the first bending area and the second bending area. The second bending area It includes a second groove portion that is recessed along the thickness direction of the support plate; in the thickness direction of the support plate, the recess depth of the second groove portion is greater than the recess depth of the first groove portion.

According to a second aspect of an embodiment of the present disclosure, a flexible display panel is provided, including a flexible display body and a support plate as described in any of the above embodiments, the flexible display body being disposed on the support plate away from the first On the surface of a groove part, the flexible display body includes a flexible bending area, and the flexible bending area is at least partially provided corresponding to the first bending area.

Optionally, the support plate includes a second bending area and a transition area. The transition area and the first bending area are provided on both sides of the second bending area. The transition area is located at the Between the first bending area and the second bending area, the depression depth of the second groove part of the second bending area is greater than the depression depth of the first groove part of the first bending area. ; When the flexible display panel is bent, the flexible bending area changes in bending, and the radius of curvature of the area corresponding to the second bending area is greater than the radius of curvature of the area corresponding to the first bending area.

According to a third aspect of an embodiment of the present disclosure, an electronic device is provided, including the flexible display panel as described in any of the above embodiments.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

As can be seen from the above embodiments, the present disclosure reduces the width of the first groove portion in the gradient area, so that the rigid non-bending area of the support plate and the flexible bending area provided with the first groove portion are The natural transition between the two can avoid uneven and obvious bending marks on the surface of the support plate during the bending process, reduce the probability of users seeing marks, and improve the aesthetics of the support plate.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and do not limit the present disclosure.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

Figure 1 shows a top view of one embodiment of the support plate of the present disclosure.

FIG. 2 shows a side view of the support plate shown in FIG. 1 .

FIG. 3 is a schematic diagram of an embodiment of the first bending area of the support plate of the present disclosure.

FIG. 4 is a schematic diagram of another embodiment of the first bending area of the support plate of the present disclosure.

FIG. 5 is a schematic diagram of yet another embodiment of the first bending area of the support plate of the present disclosure.

FIG. 6 is a schematic diagram of another embodiment of the first bending area of the support plate of the present disclosure.

FIG. 7 is a schematic diagram of yet another embodiment of the first bending area of the support plate of the present disclosure.

Figure 8 is a schematic diagram of another embodiment of the first bending area of the support plate of the present disclosure.

FIG. 9 is a schematic diagram of an embodiment of the flexible display panel of the present disclosure in an unbent state.

FIG. 10 is a schematic diagram of a flexible display panel of the present disclosure in a bent state.

FIG. 11 is a schematic diagram of another flexible display panel of the present disclosure in a bent state.

FIG. 12 shows an overall schematic diagram of the electronic device of the present disclosure.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The manner described in the following exemplary embodiments does not represent all manners consistent with the present disclosure. Rather, they are merely examples of means consistent with aspects of the disclosure as detailed in the appended claims.

The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have the usual meaning understood by a person with ordinary skill in the art to which this invention belongs. The "first", "second" and similar words used in this disclosure and the claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "a" or "one" and other similar words do not indicate a quantitative limit, but indicate the existence of at least one. If it refers to only "one", it will be explained separately. "Multiple" or "several" means two or more than two. Unless otherwise indicated, similar terms such as "front", "rear", "lower" and/or "upper" are for convenience of description only and are not intended to limit one position or one spatial orientation. "Including" or "including" and other similar words mean that the elements or objects appearing before "includes" or "includes" cover the elements or objects listed after "includes" or "includes" and their equivalents, and do not exclude other elements. or objects. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a," "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items. As long as the technical solutions herein are not inconsistent, multiple embodiments may be combined with each other.

As shown in Figures 1-8, the first aspect of the present disclosure provides a support plate 100 applied to a flexible display panel, including a first bending area 1, a second bending area 2 and a transition area 3. The first bending zone 1 , the second bending zone 2 and the transition zone 3 are arranged side by side. The transition zone 3 is arranged between the first bending zone 1 and the second bending zone 2 , and can be between the second bending zone 2 A first bending area 1 and a transition area 3 are provided on one side or both sides of the. The support plate 100 can be bent using the first bending zone 1, the second bending zone 2 and the transition zone 3 as bending areas. Taking the embodiment shown in Figure 1 as an example, the first bending zone 1, the second bending zone 2 and the transition zone 3 are arranged side by side along the length direction X of the support plate 100, and on both sides of the second bending zone 2 A first bending area 1 and a transition area 3 are provided respectively. When the support plate 100 is bent, the two sides of the upper surface 6 in the length direction X are close to each other. It is true that those skilled in the art can set the side-by-side arrangement direction of the first bending area 1 , the second bending area 2 and the transition area 3 according to actual needs, for example, it can be along the width direction Y of the support plate 100 , or along the The present disclosure is not limited to the diagonal direction of the support plate 100 or the direction along any angle with the length direction X of the support plate 100 .

The first bending area 1 includes at least one gradual change area 11 . Each gradual change area 11 includes a plurality of first groove portions 111 that are arranged side by side and recessed along the thickness direction Z of the support plate 100 . The side-by-side direction is consistent with the thickness direction Z of the support plate 100 . Z is vertical; wherein, in at least one gradient zone 11 of the first bending zone 1, the width W of the first groove portion 111 of the same gradient zone 11 decreases in the side-by-side direction. Taking the embodiment shown in Figure 2 as an example, the support plate 100 includes two first bending areas 1, and each first bending area 1 includes two gradient areas 11, and the first groove portion of each gradient area 11 The width W decreases along the length direction Decreasing from left to right, another gradient area 11 may decrease from right to left in the length direction X. It is true that those skilled in the art can set different numbers of first bending areas 1 according to actual needs, or each first bending area 1 includes a different number of gradient areas 11 , or the width W of the first groove portion 111 decreases. Direction, this disclosure is not limiting.

Through this arrangement, those skilled in the art can flexibly set the first bending area 1 according to the actual stress situation when the support plate 100 is bent. Assume that when the support plate 100 shown in Figure 2 is bent upward, the upper surface 6 is compressed and the lower surface 5 is elongated. The lower surface 5 of the support plate 100 needs to bear greater stress. Therefore, in order to reduce the deformation, the The plurality of first groove portions 111 in the plurality of gradient regions 11 are used to buffer stress, increase the flexibility of the first bending region 1, and enhance plasticity; in addition, in the present disclosure, the plurality of first groove portions in the same gradient region 11 The width W of the first groove portion 111 decreases gradually, and it can be understood that the wider the width W of the first groove portion 111, the easier it is to see the mark from the upper surface 6 after the first bending area 1 is bent. Therefore, in this disclosure The width of the first groove portions 111 can be reduced by increasing the number of the first groove portions 111, thereby buffering stress and reducing deformation as much as possible while reducing the probability that users will see impressions and improving aesthetics.

In any implementable embodiment of the present disclosure, the extending direction of the first groove portion 111 is perpendicular to both the side-by-side direction and the thickness direction Z, and is parallel to the bending axis direction of the first bending zone 1 , wherein the first bending zone 111 extends in a vertical direction. The bending axis of the bending zone 1 can be understood as the axis of the bending structure formed by the first bending zone 1 when the support plate 100 is bent. Taking the embodiment shown in FIG. 1 and FIG. 2 as an example, when the support plate 100 is bent, a part of the upper surface 6 corresponding to the first bending zone 1 is compressed, and a part of the lower surface 5 corresponding to the first bending zone 1 is compressed. Stretching, at this time can be understood as the bending axis of the first bending zone 1 is parallel to the width direction Y. The arrangement direction of the first groove portions 111 is parallel to the length direction X of the support plate 100, and since the width direction Y is perpendicular to both the length direction The bending axes are parallel. Assuming that the cross-section of each first groove portion 111 is a rectangular structure, the extension direction of the first groove portion 111 can be understood as the length direction. In the width direction Y, each first groove portion 111 has a rectangular cross-section. The extension length of the groove portion 111 may be less than or equal to the width of the support plate 100, and may be specifically designed as required, and is not limited by this disclosure. By arranging in this way, when the first bending zone 1 is bent, the first bending zone 1 is arranged along the length direction The ability of the plate 100 to withstand bending stress.

In some optional embodiments, similar to the first bending zone 1 , the second bending zone 2 includes a second groove portion 21 that is recessed along the thickness direction Z of the support plate 100 ; in the thickness direction Z of the support plate 100 , the depression depth H2 of the second groove portion 21 is greater than the depression depth H1 of the first groove portion 111 . Since the depression depth H2 of the second groove portion 21 is greater than the depression depth H1 of the first groove portion 111 , compared with the first bending area 1 , the support plate 100 can be It can withstand a greater degree of bending deformation, so the position where the second bending area 2 is provided has better bending flexibility and can withstand a greater degree of bending. In addition, by setting the transition zone 3 , those skilled in the art can flexibly set the spacing between the first bending zone 1 and the second bending zone 2 according to the actual bending conditions of the support plate 100 , so that the support plate 100 can It can be applied to more different bending states, and at the same time, it can ensure a good rigid connection between the first bending area 1 and the second bending area 2, and ensure the rigidity of the support plate 100.

Those skilled in the art can set the depression depth H1 of the first groove part 111 and the depression depth H2 of the second groove part 21 according to the actual situation. For example, the depression depth H1 of the first groove part 111 and the support plate thickness H3 can be set. The ratio range is greater than or equal to 0.4 and less than or equal to 0.6. The ratio range of the depression depth H2 of the second groove portion 21 and the thickness H3 of the support plate is greater than or equal to 0.7 and less than or equal to 0.9, which is not limited by the present disclosure. In the above embodiment, the first groove portion 111 and the second groove portion 21 may be formed through an etching process. However, those skilled in the art can also use processing methods commonly used in other fields to process the first groove portion 111 and the second groove portion 21, such as milling, etc., which is not limited by this disclosure.

Referring below to Figures 3 to 8, it should be noted that in the embodiment shown in Figures 3 to 8, each dotted square box represents a gradient area 11, and the dotted arrow in the dotted square box represents the gradient. The decreasing direction of the width W of the first groove portion 111 in the area 11 . For example, the dotted arrow in the dotted square box on the left side of FIG. 3 points to the right, which means that the width W of the first groove portion 111 in the gradient area 11 in this viewing angle changes from left to right in the length direction X of the support plate 100 . Decreasing to the right.

In addition, it should be understood that the number of gradient zones 11 in the first bending zone 1, the number of first groove portions 111 in each gradient zone 11, the width W, etc. in the drawings should be regarded as illustrative and not limiting. Specifically, those skilled in the art can set different numbers of gradient zones 11 in the first bending zone 1 and set different numbers of first groove portions 111 in different gradient zones 11 of the first bending zone 1 according to actual needs. , first groove portions 111 with different widths, etc., are not limited by this disclosure.

With specific reference to Figures 3-5, in some possible embodiments, the width W of the first groove portion 111 of the same gradient area 11 decreases along the same direction. In the embodiment shown in FIGS. 3 to 5 , the first bending area 1 may be provided with two gradient areas. Among them, in the embodiment shown in Figure 3, the width W of the first groove portion 111 in the two gradient areas 11 decreases from left to right in the length direction X; in the embodiment shown in Figure 4, The width W of the first groove portion 111 of the two gradient areas 11 decreases from right to left in the length direction The width W decreases from right to left in the length direction X, and the width W of the first groove portion in the right gradient area 11 decreases from left to right in the length direction X.

In the embodiment shown in FIGS. 3 to 5 , the first bending zone 1 includes two gradient zones 11 as an example for description. For example, in some other possible embodiments, the first bending zone 1 may also be Other numbers of gradient areas 11 may be included. For example, the first bending area 1 may include three or more gradient areas 11, wherein the width size of each gradient area 11 in the side-by-side direction decreases in the same direction, that is, from Decreasing from left to right or from right to left. For another example, the first bending area 1 includes a single gradual change area 11. When the first bending area 1 includes a single gradual change area 11, in the length direction The sizes of the gradient areas 11 are equal. Therefore, at this time, the entire first bending area 1 appears as a plurality of first groove portions 111 decreasing from left to right or from right to left; of course, in some other possible embodiments, , according to needs, the size of the first bending area 1 can also be set to be larger than the size of the single gradient area 11 in the length direction X, and this disclosure is not limited to this.

With this arrangement, when the support plate 100 is bent to varying degrees in multiple places, the first groove portion 111 with the largest width W in the different gradient areas 11 can be set at the location where different stresses are released to the greatest extent during bending, so that This effectively reduces the impact of the bending stress on the support plate 100 and improves the foldability and bending deformation flexibility of the support plate 100 in different areas.

In addition, in an embodiment in which the first bending area 1 includes one or more gradient areas 11 and the first groove portion 111 in each gradient area 11 decreases along the same direction, those skilled in the art can set it so that the gradient The decreasing direction of the first groove portion 111 of the zone 11 is the same as the decreasing direction of the bending stress of the first bending zone 1, where the bending stress decreasing direction can be understood as the first bending zone 1 of the self-supporting plate 100 points toward the non-bending direction. The direction of the bending zone allows for a uniform transition to the non-bending zone through the decreasing width W of the first groove portion 111, reducing the difference between the first bending zone 1 and the non-bending zone, which is beneficial to improving support. The aesthetics of the board 100.

Specifically referring to FIG. 6 , in some possible embodiments, the width W of the first groove portion 111 of the same gradient region 11 may decrease from the middle toward both sides of the gradient region 11 . In other words, among the plurality of first groove portions 111 in the gradient area 11 , the first groove portion 111 located in the middle has the widest width W, while the first groove portions 111 located at both edges of the gradient area 11 have the widest width W. The width W is the narrowest; among them, the width W of the first groove portion 111 located on both sides of the gradient area 11 can be the same, that is, the first groove portion 111 in the middle of the gradient area 11 is symmetrically arranged, or the first groove portion 111 located in the gradient area 11 can be symmetrically arranged. The width W of the first groove portion 111 on both sides of the area 11 may also be different. That is, the width W of the first groove portion 111 on both sides of the first groove portion 111 located in the middle of the gradient area 11 decreases on its own. set up.

In the embodiment shown in FIG. 6 , the first bending area 1 is provided with a gradient area 11 . With this arrangement, when the support plate 100 is bent with a smaller radius of curvature at the center of the gradient zone 11 , the first groove portion 111 with the largest width W in the gradient zone 11 is disposed at the point where the bending stress is released to the greatest extent, thereby offsetting the bending stress. The influence of bending stress on the support plate 100 improves the bendability of the support plate 100 . In addition, the width W of the first groove portion 111 decreases from the center of the first bending area 1 toward both sides of the first bending area 1 , corresponding to the width W from the center of the first bending area 1 toward the first bending area 1 . The bending stress on both sides decreases, and the width W of the first groove part 111 at the place where the bending stress is smaller is smaller, so that the support plate 100 is bent from the first bending part where the first groove part 111 is provided with good flexibility. When zone 1 transitions to the non-bending zone with better rigidity, the transition is more natural. It is difficult for the user to see the bending marks when bending the support plate 100 , thereby improving the aesthetics of the support plate 100 . In the embodiment shown in FIG. 6 , the first bending area 1 includes a single gradient area 11 shown in FIG. 6 as an example. In fact, in other embodiments, the first bending area may also include multiple. There is a gradient area 11 shown in Figure 6, which is not limited by this disclosure.

It is true that in the above embodiments, the first groove portions 111 of the multiple gradient regions 11 included in the first bending zone 1 are all explained with the same change rules. In fact, in other embodiments, the first bending zone 11 has the same changing rules. When zone 1 includes multiple gradient zones 11, the changing rules of the first groove portion 111 of the gradient zone 11 can also be different. The first groove portion 111 of the gradient zone 11 shown in the above-mentioned Figures 3, 4 and 6 The change rules of can be combined arbitrarily, and this disclosure does not limit this. Taking the embodiment shown in Figures 7 and 8 as an example, the first bending area 1 includes two gradient areas 11. The width W of the first groove portion 111 in the left gradient area 11 gradually changes in the same direction, and the width W of the first groove portion 111 in the left gradient area 11 gradually changes in the same direction. The width W of the first groove portion 111 in the gradient area 11 decreases toward both sides of the gradient area 11 . In this way, those skilled in the art can set the first groove portion 111 with the widest width W in the different gradient areas 11 at different maximum bending stress release points according to the actual stress conditions of the support plate 100, thereby offsetting the bending stress. Effect on the support plate 100. In addition, since the wider the width W, the stronger the flexibility of the support plate 100 there, and thus can offset greater bending stress, the decreasing direction of the width W is set to be consistent with the decreasing direction of the bending stress, thereby optimizing the first The balance between flexibility and rigidity of the bending zone 1 makes the transition between flexibility and rigidity of the first bending zone 1 more natural, reduces bending marks when the support plate 100 is bent, and improves the aesthetics of the support plate 100 .

Here, the first bending area 1 includes two gradient areas 11 and the change rules of the two gradient areas 11 are different. In other embodiments, the first bending area 1 may also include three. One or more gradient areas 11 may have one or more gradient areas 11 whose change rules are different from the change rules of other gradient areas 11 , which will not be described again here.

In the above embodiments, in at least one gradient area 11 included in the first bending area 1, the spacing distance D in the side-by-side direction between adjacent first groove portions 111 of the same gradient area 11 remains unchanged, so that the support The plate 100 has relatively good rigidity in the gradient area 11 . In other possible embodiments, with specific reference to FIG. 7 , in the side-by-side direction of multiple first groove portions 111 , the separation distance D between adjacent first groove portions 111 of the same gradient area 11 decreases, such that The support plate 100 has good flexibility at the first groove portions 111 with a smaller width in the gradient area 11 , and because the spacing distance D between the first groove portions 111 with a smaller width is smaller, the support plate 100 The changes in rigidity and flexibility in the gradient area 11 are uniform, which can reduce stress fatigue during use of the support plate 100 and extend the service life of the support plate 100 . Among them, any change rule of the distance D between the same gradient areas 11 in the side-by-side direction can be applied to any of the aforementioned gradient areas 11. When the first bending area 1 includes multiple gradient areas 11, the gradient area 11 is The variation rules of the spacing distance D of the included first groove portions 111 may be the same or different, and the present disclosure does not limit this.

Specifically referring to FIG. 8 , in some possible embodiments, in the side-by-side direction of the plurality of first groove portions 111 , in at least one gradient area 11 included in the first bending area 1 , the first portion of the same gradient area 11 The recessed depth H1 of the groove portion 111 in the thickness direction Z of the support plate 100 is equal or decreases. By gradually reducing the depth H1 of the first groove portion 111 , the transition between the first bending area 1 and the non-bending area of the support plate 100 can be made even and gentle, thereby avoiding the first bending when the support plate 100 is bent. There are obvious bending marks between area 1 and the non-bending area, which improves the aesthetics of the support plate 100 . Among them, any change rule of the depression depth H1 of the same gradient area 11 in the side-by-side direction can be applied to any of the aforementioned gradient areas 11. When the first bending area 1 includes multiple gradient areas 11, the gradient area 11 The variation rules of the recess depth H1 of the included first groove portion 111 may be the same or different, and the present disclosure does not limit this.

It should be understood that the description of the setting manner of the width W of the first groove portion 111 in this disclosure is also applicable to the setting manner of the depression depth H1 of the first groove portion 111 and the spacing distance between adjacent first groove portions 111 The setting method of D: taking the embodiment shown in FIG. 4 as an example, the width W of the first groove part 111 can be kept consistent and the depression depth H1 of the first groove part 111 can be reduced according to the dotted line direction in the figure, or The width W of the first groove portions 111 remains consistent so that the distance D between the first groove portions 111 decreases along the dotted line direction in the figure. Of course, those skilled in the art can also set part of the gradient area 11 so that the width W of the first groove part 111 decreases, set part of the gradient area 11 so that the depth H1 of the first groove part 111 decreases, and set part of the first groove part 111 as the width W decreases. When the width W of the groove portion 111 decreases, the depth H1 of the first groove portion 111 also decreases, which is not limited by the present disclosure.

Regarding the decreasing manner of the width of the first groove portion 111 in this disclosure, in some possible embodiments, in at least one gradient zone 11 of the first bending zone 1 , the first groove portion is disposed in the same gradient zone 11 The width W decreases uniformly with the same difference. For example, assuming that in a gradient area 11 , the width W of the first groove portion 111 decreases from right to left, then each first groove portion 111 and the adjacent first groove portion located on its left side The difference in width W of 111 is the same constant. Wherein, the width W of the first groove portion 111 of the same gradient area 11 decreases evenly with the same difference and can be applied to any of the aforementioned gradient areas 11. When the first bending area 1 includes multiple gradient areas 11, it can be The width W of the first groove portion 111 in which there are one or more gradient areas 11 decreases uniformly with the same difference, and the width W of the others decreases non-uniformly, which is not limited by this disclosure.

With this arrangement, the width W of the first groove portion decreases in a linear manner, so that the transition between rigidity and flexibility in the gradient area 11 is even, and the support plate 100 is prevented from appearing uneven and obvious when bending. Folding marks improve the aesthetics of the support plate 100.

It should be understood that the decreasing manner of the spacing distance D between the first groove portions 111 and the decreasing manner of the depression depth H1 of the first groove portions 111 may also decrease uniformly with the same difference, which is not limited by this disclosure.

Furthermore, in the support plate 100 of the present disclosure, the width W of the first groove portion 111 in the side-by-side direction is greater than or equal to 1 micron and less than 100 micron. When the width of the gradient area 11 is constant and the spacing between the first groove portions 111 is constant, reducing the width W of the first groove portions can effectively increase the number of the first groove portions 111, so that multiple first groove portions 111 can be The width W of the groove portion changes gradually with a more subtle difference, so that the transition between rigidity and flexibility in the gradient area 11 is even. This can avoid uneven folding marks when the support plate 100 is bent, and improve The aesthetics of the support plate 100.

Referring to FIGS. 9-11 , a second aspect of the present disclosure provides a flexible display panel 200 , including a flexible display body 210 and a support plate 100 as in any of the previous embodiments. The flexible display body 210 is disposed away from the support plate 100 On the surface of the first groove portion 111, the flexible display body 210 includes a flexible bending area 211. The flexible bending area 211 is at least partially provided corresponding to the first bending area 1, such as the left and right sides of the flexible bending area 211 in Figure 9. The right sides are respectively arranged corresponding to a first bending area 1, and the middle part can be arranged corresponding to a second bending area 2. In other embodiments, the first bending zone 1 corresponds to the central part of the flexible bending zone 211, or is located at a left or right position in the flexible bending zone 211, which is not limited by this disclosure; or the flexible bending zone 211 is not limited by this disclosure. The folding area 211 may also be arranged exactly corresponding to the first bending area 1 in the up and down direction in FIG. 9 .

According to the above description of the support plate 100 in this disclosure, the support plate 100 can support the flexible display body 210: when the flexible display panel 200 is not bent, the support plate 100 provides rigid support for the flexible display body 210, ensuring that the flexible display body 210 flatness; when the flexible display panel 200 is bent, the first bending area 1 can reduce the impact of bending stress on the support plate 100 and provide a certain foldability for the support plate 100, so that the flexible display panel 200 can be folded when the flexible display panel 200 is bent. Rigid support can still be provided for the flexible display body 210 .

Specifically referring to FIG. 9 , in some possible embodiments, the support plate 100 includes a second bending zone 2 and a transition zone 3 , and the transition zone 3 and the first bending zone 1 are provided on both sides of the second bending zone 2 , the transition zone 3 is located between the first bending zone 1 and the second bending zone 2, and the depression depth H1 of the second groove part of the second bending zone 2 is greater than the first groove part of the first bending zone 1 Depth of 111mm. When the flexible display panel 200 is bent, the flexible bending area 211 undergoes bending changes, and the radius of curvature of the area corresponding to the second bending area 2 is smaller than the radius of curvature of the area corresponding to the first bending area 1 .

According to the above description of the relationship between the bending stress and the support plate thickness H3 of the present disclosure, the depression depth H1 of the second groove part is greater than the first groove part 111 , so compared with the first bending zone 1 , the second bending zone 2 Ability to bend to a greater extent. By arranging the second bending area 2 in an area with a smaller radius of curvature, the foldability of the support plate 100 can be improved, allowing the support plate 100 to withstand a greater degree of bending. The first bending area 1 is disposed in an area with a larger curvature radius, and the bending stress in this area is small. The first bending area 1 can withstand relatively small bending. At the same time, since the depression depth of the first groove portion 111 is less than The second groove portion 21 and the first bending area 1 have better rigidity, so the first bending area 1 can not only meet the bending requirements, but also provide good rigid support.

For example, as shown in FIG. 11 , when the flexible bending area 211 of the flexible display panel 200 has a cross-sectional shape that is basically "water drop-shaped" after being bent, it can be seen that a curvature radius with a relatively large radius can be formed at the bottom of the flexible bending area 211 . A small arc-shaped structure, at this time, the arc-shaped structure can be set corresponding to the second bending zone 2 to buffer larger stress through the second bending zone 2; and in the area separated by a certain distance from the arc-shaped structure Another arc-shaped structure with a larger curvature radius can be formed, and the other arc-shaped structure can be provided corresponding to the first bending zone 1 to buffer smaller stress through the first bending zone 1, so that Different settings according to different bending degrees of the flexible bending area 211 are beneficial to buffering stress while maintaining the strength of the support plate 100 .

In addition, the setting of the transition area 3 not only enables the support plate 100 to provide good rigid support for the flexible display body 210, but also enables those skilled in the art to flexibly adjust the first bending area 1 and the flexible display panel 200 according to different folding modes. The spacing between the second bending areas 2 enables the support plate 100 to meet different folding requirements and enriches the folding methods of the flexible display panel 200 .

Referring to FIG. 12 , a third aspect of the present disclosure provides an electronic device 300 including the flexible display panel 200 as in any of the preceding embodiments. The electronic device 300 may include a mobile phone terminal, a tablet terminal or a display terminal, which is not limited by this disclosure.

The specific embodiments described herein are merely illustrative of the spirit of the disclosure. Those skilled in the art to which this disclosure belongs may make various modifications, supplements, or use similar methods to replace the specific embodiments described, but this will not deviate from the spirit of the disclosure or exceed the scope defined by the appended claims. .

The technical features of the above embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, all possible combinations should be used. It is considered to be within the scope of this manual.

Claims (12)

1. A support plate, characterized in that it is applied to a flexible display panel, and the support plate includes: A first bending area, the first bending area includes at least one gradual change area, and each of the gradual change areas includes a plurality of first groove portions that are arranged side by side and recessed along the thickness direction of the support plate. The direction is perpendicular to the thickness direction of the support plate; Wherein, the width of the first groove portion in the same gradient area decreases gradually in the side-by-side direction. 2. The support plate according to claim 1, wherein in at least one of the gradient areas of the first bending area, the width of the first groove portion of the same gradient area extends along the same direction decreases. 3. The support plate according to claim 1, wherein in at least one of the gradient areas of the first bending area, the width of the first groove portion of the same gradient area is from The middle part of the gradient zone decreases toward both sides. 4. The support plate according to claim 1, wherein the extension direction of the first groove portion is perpendicular to both the side-by-side direction and the thickness direction, and is parallel to the bend of the first bending area. The axis directions are parallel. 5. The support plate according to claim 1, characterized in that, in at least one of the gradient areas of the first bending area, adjacent first groove portions of the same gradient area are in the side-by-side The separation distance in the direction remains unchanged; and/or, In at least one of the gradient areas of the first bending area, the spacing distance in the side-by-side direction between adjacent first groove portions of the same gradient area decreases. 6. The support plate according to claim 1, wherein in at least one of the gradient areas of the first bending area, in the parallel direction of the plurality of first groove portions, the same place is The depth of the first groove portion of the gradient zone in the thickness direction of the support plate is equal or decreasing. 7. The support plate according to claim 1, wherein in at least one of the gradient areas of the first bending area, the width of the first groove portion provided in the same gradient area has the same width. The difference decreases uniformly. 8. The support plate according to claim 1, wherein the width of the first groove portion in the side-by-side direction is greater than or equal to 1 micron and less than 100 microns. 9. The support plate according to claim 1, wherein the support plate further includes a second bending area and a transition area, and the transition area is disposed between the first bending area and the second bending area. Between the folding areas, the second bending area includes a second groove portion recessed along the thickness direction of the support plate; in the thickness direction of the support plate, the recess depth of the second groove portion is greater than The depth of the first groove portion. 10. A flexible display panel, characterized by comprising a flexible display body and a support plate according to any one of claims 1-9, the flexible display body being disposed on the support plate away from the first groove The flexible display body includes a flexible bending area, and the flexible bending area is arranged at least partially corresponding to the first bending area. 11. The flexible display panel according to claim 10, wherein the support plate includes a second bending area and a transition area, and the transition area and the transition area are provided on both sides of the second bending area. The first bending zone, the transition zone is located between the first bending zone and the second bending zone, and the depression depth of the second groove portion of the second bending zone is greater than the second bending zone. A depression depth of the first groove portion of the bending area; When the flexible display panel is bent, the flexible bending area changes in bending, and the radius of curvature of the area corresponding to the second bending area is smaller than the radius of curvature of the area corresponding to the first bending area. 12. An electronic device, characterized by comprising the flexible display panel according to any one of claims 10-11.