Display module and display device

Abstract

A display module (1000) and a display device. The display module comprises a support plate (100) and a flexible display panel (200) provided on the support plate (100); the support plate (100) comprises first hole groups (11) and second hole groups (12) provided in a bending area (wz); in a first direction (F1), a first ribs (j1) is connected between two adjacent rows of second hole groups (12), a second rib (j2) is connected between one first opening group (11) and one second opening group (12) that are adjacent, a third rib (j3) is connected between two adjacent rows of holes (kk) in one second hole group (12), and the width (Yp1) of the first rib (j1) and the width (Yp2) of the second rib (j2) are both greater than the width (Yc) of the third rib (j3).

Description

Display modules and display devices Technical Field

[0001] This application relates to the field of display technology, specifically to a display module and display device. Background Technology

[0002] Flexible screen support plates typically have holes punched in the bending areas to improve their bending capacity, but this also reduces their impact resistance. Existing support plate designs prioritize increasing bending capacity at the expense of impact resistance. To further improve impact resistance, current solutions involve simultaneously increasing the width of all ribs, which again reduces bending capacity, causes stress concentration at the apex of the holes, and can even lead to breakage. Invention Overview

[0003] This application provides a display module and display device that can improve the impact resistance of the support plate while meeting the bending capacity requirements.

[0004] On one hand, this application provides a display module, including a support plate and a flexible display panel disposed on the support plate. The support plate includes a bending area and a non-bending area, the non-bending area being located on both sides of the bending area, and the bending area having a bending axis.

[0005] The support plate includes a first opening group and a second opening group disposed in the bending area. In a first direction, the second opening group is arranged on both sides of the first opening group, and the first opening group is disposed corresponding to the bending axis.

[0006] The first group of openings has 2n-1 rows of openings, where n is a positive integer; the second group of openings has 2m rows of openings, where m is a positive integer; the openings in each row extend along a second direction and are arranged in a specific pattern; the first direction intersects the second direction.

[0007] In the first direction, a first rib connects two adjacent rows of the second opening groups, a second rib connects adjacent first opening groups and second opening groups, and a third rib connects two adjacent rows of openings in a second opening group. The width of the first rib and the width of the second rib are both greater than the width of the third rib.

[0008] On the other hand, correspondingly, embodiments of this application also provide a display device, which includes a display module as described in any of the above embodiments. Attached Figure Description

[0009] Figure 1 is a schematic diagram of the planar structure of the support plate provided in an embodiment of this application;

[0010] Figure 2 is a schematic plan view of the bending area in Figure 1;

[0011] Figure 3 is another schematic plan view of the bend in Figure 1;

[0012] Figure 4 is a three-dimensional structural diagram of the support plate in a bent state provided in an embodiment of this application;

[0013] Figure 5 is a bending stress distribution cloud map based on Figure 2, showing the support plate in a teardrop-shaped bend.

[0014] Figure 6 is a bending stress distribution cloud map based on Figure 3, showing the support plate in a teardrop-shaped bend.

[0015] Figure 7 is another schematic plan view of the bend in Figure 1;

[0016] Figure 8 is a partial schematic diagram of the first and second opening groups in Figure 7;

[0017] Figure 9 is a bending stress distribution cloud map based on Figure 7, showing the support plate in a teardrop-shaped bend.

[0018] Figure 10 is a schematic diagram of the structure of the display module provided in the embodiment of this application. Embodiments of the present invention

[0019] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific implementation methods described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, the embodiments can be combined with each other but will not be described in detail one by one. Unless otherwise stated, the directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device; the terms "first," "second," "third," etc. are only used as markings and do not impose numerical requirements or establish a sequence.

[0020] This application provides a support plate, a display module, and a display device, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0021] On one hand, this application provides a display module, including a support plate and a flexible display panel disposed on the support plate. The support plate includes a bending area and a non-bending area, the non-bending area being located on both sides of the bending area, and the bending area having a bending axis.

[0022] The support plate includes a first opening group and a second opening group disposed in the bending area. In a first direction, the second opening group is arranged on both sides of the first opening group, and the first opening group is disposed corresponding to the bending axis.

[0023] The first group of openings has 2n-1 rows of openings, where n is a positive integer; the second group of openings has 2m rows of openings, where m is a positive integer; the openings in each row extend along a second direction and are arranged in a specific pattern; the first direction intersects the second direction.

[0024] In the first direction, a first rib connects two adjacent rows of the second opening groups, a second rib connects adjacent first opening groups and second opening groups, and a third rib connects two adjacent rows of openings in a second opening group. The width of the first rib and the width of the second rib are both greater than the width of the third rib.

[0025] Optionally, in some embodiments of this application, the number of the first opening group is one row, and the number of the second opening group is an even number of rows;

[0026] In the top view of the support plate, the pattern of the bending area is symmetrical about the bending axis, and the pattern of the first opening group is symmetrical about the bending axis.

[0027] Optionally, in some embodiments of this application, the width of the first rib is equal to the width of the second rib, and in the first direction, the widths of two adjacent first ribs are equal.

[0028] Optionally, in some embodiments of this application, the width of the second rib is greater than the width of the first rib.

[0029] Optionally, in some embodiments of this application, the width of the first rib decreases in the direction from the bending axis to the non-bending area.

[0030] Optionally, in some embodiments of this application, in the first direction, the width of the first rib and the width of the second rib are both between 1.5 and 2 times the width of the third rib.

[0031] Optionally, in some embodiments of this application, the value of n is negatively correlated with the number of the first ribs, and the value of m is negatively correlated with the number of the first ribs.

[0032] Optionally, in some embodiments of this application, n=1, in the first group of openings, the opening includes a main cutout area and an end cutout area, the end cutout area is connected to at least one end of the main cutout area, and in the first direction, the width of the main cutout area is smaller than the width of the end cutout area.

[0033] Optionally, in some embodiments of this application, the second rib includes a first part and a second part connected to the first part. The first part is located between the main hollow area and the second opening group, and the second part is located between the end hollow area and the second opening group. The width of the first part is greater than the width of the second part, and the width of the second part is greater than the width of the third rib.

[0034] Optionally, in some embodiments of this application, the bending area includes a first opening area and a second opening area disposed on both sides of the first opening area, the second opening area being disposed between the first opening area and the non-bending area, and the bending axis being located in the first opening area;

[0035] In the top view of the support plate, in the first direction, a plurality of openings are arranged in rows, and two adjacent rows of openings partially overlap each other, and the length direction of the openings is the second direction;

[0036] In the first opening area, the lengths of the openings in the same row are equal; in the second opening area, the lengths of the openings in the same row decrease in the direction from the first opening area toward the non-bending area.

[0037] Optionally, in some embodiments of this application, in a top view of the support plate, the support plate has a first side and a second side disposed opposite to each other, the first side and the second side are both perpendicular to the extension direction of the bending axis, and in the second direction, the first row of openings penetrates the first side and the last row of openings penetrates the second side.

[0038] The distance between two adjacent openings in the second direction is greater than the width of the first rib.

[0039] Optionally, in some embodiments of this application, in a top view of the support plate, in the first direction, the width of the opening is between 0.08 mm and 0.2 mm; in the second direction, the distance between two adjacent openings is between 0.2 mm and 0.4 mm, and the length of the opening is between 4 mm and 9 mm; the two ends of the opening are semi-circular, and the radius of the semi-circle is half the width of the opening.

[0040] Optionally, in some embodiments of this application, the bending area includes an inner bending area, a transition area, and an outer bending area connected in sequence, the outer bending area is connected to the non-bending area, and the first opening area and the second opening area are located in the inner bending area;

[0041] Among them, the inner bending area near the transition area, the outer bending area, and the transition area are non-opening areas.

[0042] Accordingly, this application also provides a display device, which includes a display module as described in any of the above embodiments.

[0043] The display module of this application embodiment includes a support plate and a flexible display panel disposed on the support plate. The support plate includes a first opening group and a second opening group disposed in the bending area. In the first direction, a first rib is connected between two adjacent rows of the second opening groups, a second rib is connected between adjacent first opening groups and second opening groups, and a third rib is connected between two adjacent rows of openings in a second opening group.

[0044] It is understandable that, in the first direction, the width of the first rib and the width of the second rib are both greater than the width of the third rib, that is, the rib width between the opening groups is increased, thereby improving the impact resistance of the support plate, while the rib width within the opening group is smaller to meet the requirements for bending capacity.

[0045] In Figures 1 to 3, the first direction F1 can be a direction parallel to one side of the support plate 100 in the plan view, and for example, it can be the transverse direction of the support plate 100. The second direction F2 can be a direction parallel to the other side of the support plate 100 in the plan view. However, it is not limited to this; for example, the first direction F1 and the second direction F2 can also intersect non-perpendicularly.

[0046] Understandably, the support plate 100 is used to support the flexible display panel. It can be applied to teardrop-shaped folding flexible panels, but is not limited to this. For example, it can also be applied to inward-bending folding flexible panels or outward-bending folding flexible panels.

[0047] Optionally, in some embodiments of this application, the material of the support plate 100 may be stainless steel, titanium alloy, aluminum alloy, carbon fiber, etc.

[0048] This application provides a support plate 100, which includes a bending region wz and a non-bending region nw, with the non-bending region nw located on both sides of the bending region wz. The bending region wz has a bending axis zz.

[0049] The support plate 100 includes a first opening group 11 and a second opening group 12 disposed in the bending area wz. In the first direction F1, the second opening group 12 is arranged on both sides of the first opening group 11, and the first opening group 11 is disposed corresponding to the bending axis zz.

[0050] The first aperture group 11 has 2n-1 rows of apertures kk, where n is a positive integer. The second aperture group 12 has 2m rows of apertures kk, where m is a positive integer. In each row of apertures kk, the apertures kk extend along the second direction F2 and are arranged in a specific pattern. The first direction F1 intersects the second direction F2.

[0051] In the first direction F1, a first rib j1 connects two adjacent rows of second opening groups 12, a second rib j2 connects two adjacent first opening groups 11 and second opening groups 12, and a third rib j3 connects two adjacent rows of openings kk in a second opening group 12. The width Yp1 of the first rib j1 and the width Yp2 of the second rib j2 are both greater than the width Yc of the third rib j3.

[0052] It is understandable that the opening kk penetrates the support plate 100 in the thickness direction. The first opening group 11 has 2n-1 rows of openings kk, where n is a positive integer, that is, the first opening group 11 has an odd number of rows of openings kk. The second opening group 12 has 2m rows of openings kk, where m is a positive integer, that is, the second opening group 12 has an even number of rows of openings kk.

[0053] In the first direction F1, the width Yp1 of the first rib j1 and the width Yp2 of the second rib j2 are both greater than the width Yc of the third rib j3, which increases the rib width between the opening groups, thereby improving the impact resistance of the support plate 100. Meanwhile, the rib width within the opening group is smaller to meet the requirements for bending capacity.

[0054] Next, the first rib j1 to the third rib j3 are non-perforated structures to ensure their impact resistance. The first rib j1 to the third rib j3 all extend along the second direction F2. In the first direction F1, the first rib j1 and the perforated group are alternately arranged to improve the uniformity of impact resistance.

[0055] Additionally, it should be noted that the width Yp1 of the first rib j1 is the distance between two adjacent rows of the second opening group 12, the width Yp2 of the second rib j2 is the distance between adjacent first opening group 11 and second opening group 12, and the width Yc of the third rib j3 is the distance between two adjacent rows of openings kk in the second opening group 12.

[0056] Optionally, in some embodiments of this application, in the first direction F1, the width Yp1 of the first rib j1 and the width Yp2 of the second rib j2 are both between 1.5 and 2 times the width Yc of the third rib j3.

[0057] It is understandable that the larger the width of the first rib j1 and the second rib j2, the stronger the impact resistance of the support plate 100, but the weaker its bending performance and the worse the smoothness of the bent surface. Therefore, in order to balance the smoothness of the bent surface, bending performance, and impact resistance, and to keep the width Yc of the third rib j3 relatively small, the widths Yp1 of the first rib j1 and Yp2 of the second rib j2 are selected to be between 1.5 and 2 times the width Yc of the third rib j3, so as to maximize the impact resistance while satisfying the bending performance requirements.

[0058] Optionally, the width Yp1 of the first rib j1 and the width Yp2 of the second rib j2 are 1.5 times, 1.6 times, 1.7 times, 1.8 times, 1.9 times, or 2 times the width Yc of the third rib j3.

[0059] Optionally, in some embodiments of this application, the width Yp1 of the first rib j1 and the width Yp2 of the second rib j2 are between 0.2 mm and 0.3 mm, and the width Yc of the third rib j3 is between 0.1 mm and 0.2 mm.

[0060] It is understandable that the larger the width of the first rib j1 to the third rib j3, the stronger the impact resistance of the support plate 100, but the weaker its bending performance and the worse the smoothness of the bent surface. Therefore, in order to balance the smoothness of the bent surface, bending performance, and impact resistance, and to keep the width Yc of the third rib j3 relatively small, the widths Yp1 of the first rib j1 and Yp2 of the second rib j2 are selected to be between 0.2 mm and 0.3 mm, and the width Yc of the third rib j3 is selected to be between 0.1 mm and 0.2 mm, so as to maximize the impact resistance while satisfying the bending performance.

[0061] Optionally, the width Yp1 of the first rib j1 and the width Yp2 of the second rib j2 can each be 0.2 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm, or 0.3 mm. The width Yc of the third rib j3 can be 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, or 0.2 mm.

[0062] Optionally, in some embodiments of this application, the number of the first opening group 11 is an odd number of rows, so as to form an axisymmetric pattern in which the axis of symmetry passes through the long axis of the opening kk, but it is not limited to this. For example, the number of the first opening group 11 can be an even number of rows.

[0063] The first group of openings 11 has an odd number of rows, and the second group of openings 12 has an even number of rows, so as to form a pattern symmetrical about the bending axis z in the bending area wz.

[0064] Optionally, in some embodiments of this application, the number of the first opening group 11 is one row. In the top view of the support plate 100, the pattern of the bending area wz is a pattern symmetrically arranged about the bending axis zz, and the pattern of the first opening group 11 is a pattern symmetrically arranged about the bending axis zz.

[0065] It should be noted that the pattern of the bending zone wz of the support plate 100 is the same as the pattern of all the opening groups in the bending zone wz. The pattern of the bending zone wz of the support plate 100 is a symmetrical pattern to improve the uniformity of bending capacity and impact resistance. The pattern of the first opening group 11 is a symmetrical pattern about the bending axis zz. Combined with the even-numbered rows of the second opening group 12, it not only facilitates the formation of a symmetrical pattern about the bending axis zz, but also ensures that the bending axis zz corresponds to the middle row of openings kk, which can minimize bending stress and improve the bending performance of the support plate 100.

[0066] Optionally, in some embodiments of this application, the value of n is negatively correlated with the number of first ribs j1, and the value of m is negatively correlated with the number of first ribs j1.

[0067] It is understandable that the smaller the number of rows of openings in the first opening group 11 and the second opening group 12, the smaller the space required. Therefore, the more first ribs j1 can be arranged in the same space, thereby improving the impact resistance of the support plate 100.

[0068] Optionally, n = 1 or 2, m = 1 or 2. That is, the first hole group 11 has a single row of holes kk, or the first hole group 11 has three rows of holes kk. The second hole group 12 has two rows of holes kk, or the second hole group 12 has four rows of holes kk.

[0069] For example, as shown in Figure 2, the first opening group 11 has a single row of openings kk, and the second opening group 12 has a double row of openings kk. As also shown in Figure 3, the first opening group 11 has three rows of openings kk, and the second opening group 12 has a double row of openings kk.

[0070] The schematic bending area wz of the support plate 100 in the embodiment of this application shown in Figure 3 differs from the schematic bending area wz of the support plate 100 in the embodiment of this application shown in Figure 2 in that the first opening group 11 has three rows of openings kk. A fourth rib j4 connects two adjacent rows of openings kk in the first opening group 11. The width of the fourth rib j4 can be equal to the width of the third rib j3, but is not limited to this; for example, the width of the fourth rib j4 may be greater than the width of the third rib j3.

[0071] It should be noted that the embodiments corresponding to Figure 3 will not describe the parts that are the same as or similar to those corresponding to Figure 2. For details, please refer to the description of the embodiments corresponding to Figure 2.

[0072] It is understandable that the smaller the number of rows of openings in the first opening group 11 and the second opening group 12, the more first ribs j1 and second ribs j2 can be arranged in the same space, thereby improving the impact resistance of the support plate 100.

[0073] Optionally, in an embodiment where there is only one set of the first opening group 11, in order to arrange more first ribs j1, two rows of openings kk are provided in the second opening group 12.

[0074] Optionally, in some embodiments of this application, the width Yp1 of the first rib j1 is equal to the width Yp2 of the second rib j2. In the first direction F1, the width Yp1 of two adjacent first ribs j1 is equal.

[0075] In other words, the first opening group 11 and the second opening group 12 are arranged at the same distance, for example, any two adjacent opening groups are arranged at a distance of 0.25 mm.

[0076] Using equal distances Yp between any two adjacent rows of openings can better homogenize the impact resistance of the bending zone wz.

[0077] Optionally, in some embodiments of this application, the width Yp2 of the second rib j2 is greater than the width Yp1 of the first rib j1. It is understood that since the bending axis zz corresponds to the first opening group 11, the two second ribs j2 closest to the bending axis zz experience the greatest impact force. Therefore, setting the width Yp2 of the second rib j2 to be greater than the width Yp1 of the first rib j1 can precisely improve the impact resistance of the support plate 100 while also improving its bending performance.

[0078] Next, based on the fact that the bending stress decreases from the bending axis zz towards both sides when the bending zone wz is bent, and the impact force also decreases accordingly, in some embodiments of this application, the width Yp1 of the first rib j1 can be set to decrease from the bending axis zz towards the non-bending zone nw, so as to accurately improve the impact resistance of the support plate 100 while improving the bending performance.

[0079] Optionally, in some embodiments of this application, such as the embodiment shown in FIG2, in any second opening group 12, the width Yc of two adjacent third ribs j3 is equal, that is, the distance between the two rows of openings kk is equal. That is, in the first direction F1, the openings kk are arranged according to the same distance value, for example, any two adjacent openings kk are arranged at a distance of 0.15 mm.

[0080] Optionally, in some embodiments of this application, the bending region wz includes a first opening region h1 and a second opening region h2 disposed on both sides of the first opening region h1. The second opening region h2 is disposed between the first opening region h1 and the non-bending region nw. The bending axis zz is located in the first opening region h1.

[0081] In a top view of the support plate 100, multiple openings kk are arranged in rows along the first direction F1, with adjacent rows of openings kk partially overlapping each other. The length L of the openings kk is along the second direction F2. Multiple openings kk are arranged in rows (columns) along the second direction F2.

[0082] In this design, two adjacent rows of openings kk partially overlap each other, allowing for more openings kk to be set within a limited space, thereby improving the bending capacity of the support plate 100.

[0083] In some embodiments of this application, in a top view of the support plate 100, the support plate 100 has a first side 12a and a second side 12b disposed opposite to each other, both the first side 12a and the second side 12b being perpendicular to the extension direction of the bending axis zz. In the second direction F2, a first row of openings kk penetrates the first side 12a, and a last row of openings kk penetrates the second side 12b. The distance x between two adjacent openings kk in the second direction F2 is greater than the width Yp1 of the first rib j1.

[0084] By using openings kk to penetrate the first side 12a and the second side 12b, the bending capacity of the support plate 100 can be further improved, but its impact resistance is reduced. Therefore, the spacing x is set to be greater than the width Yp1 to compensate for the impact resistance of the bending area wz of the support plate 100 during bending, and to avoid severe deformation of the support plate 100.

[0085] In some embodiments of this application, in the first opening region h1, the lengths L of the openings kk in the same row are equal. In the second opening region h2, the lengths L of the openings kk in the same row decrease in the direction from the first opening region h1 toward the non-bending region nw.

[0086] Secondly, since the length L of the openings kk in the same row decreases in the second opening region h2, and there is an overlap length d between adjacent rows of openings kk in the first direction F1, the overlap length of adjacent rows of openings kk in the second opening region h2 also decreases from the first opening region h1 to the non-bending region nw. Furthermore, the overlap length d of adjacent rows of openings kk in the first opening region h1 is the same.

[0087] Optionally, in the second direction F2, the first row of openings kk located in the second opening area h2 shortens towards the first side 12a, and the last row of openings kk located in the second opening area h2 shortens towards the second side 12b. The other rows of openings kk located between the first and last rows shorten from both ends of the openings kk towards the middle.

[0088] Understandably, since the bending axis zz corresponds to the first opening area h1, the bending stress in the first opening area h1 is relatively large. Therefore, setting a longer opening kk in the first opening area h1 can better release the bending stress and thus improve the bending capacity of the support plate 100. The first rib j1 and the second rib j2 can further enhance the impact resistance. The second opening area h2 is far from the bending axis zz, and the side of the second opening area h2 that is far from the first opening area h1 is the non-opening area h3. The rigidity of the non-opening area h3 is much stronger than that of the first opening area h1. Therefore, setting a gradually decreasing length L opening kk in the second opening area h2 can make the rigidity and stress transition smoothly.

[0089] Optionally, the non-perforated area h3 can be located in the bending area wz, but it is not limited to this. For example, it can also be located in the non-bending area nw, or the non-perforated area h3 can be located in the bending area wz and the non-bending area nw.

[0090] Optionally, the number of second opening groups 12 located in the second opening area h2 is less than the number of second opening groups 12 located in the first opening area h1, so as to reduce the area of ​​the second opening area h2.

[0091] Optionally, in some embodiments of this application, in the top view of the support plate 100, in the first direction F1, the width w of the opening kk is between 0.08 mm and 0.2 mm, for example, it can be 0.08 mm, 0.09 mm, 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm or 0.2 mm.

[0092] The two ends of the opening kk are semicircular, and the radius R of the semicircle is half the width w of the opening kk.

[0093] In the second direction F2, the spacing x between two adjacent openings kk is between 0.2 mm and 0.4 mm, for example, it can be 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm, 0.3 mm, 0.31 mm, 0.32 mm, 0.33 mm, 0.34 mm, 0.35 mm, 0.36 mm, 0.37 mm, 0.38 mm, 0.39 mm or 0.4 mm.

[0094] The length L of the opening kk is between 4 mm and 9 mm, for example, it can be 4 mm, 4.2 mm, 4.5 mm, 4.8 mm, 5 mm, 5.2 mm, 5.5 mm, 5.8 mm, 6 mm, 6.2 mm, 6.5 mm, 6.8 mm, 7 mm, 7.2 mm, 7.5 mm, 7.8 mm, 8 mm, 8.2 mm, 8.5 mm, 8.8 mm or 9 mm.

[0095] It is understandable that the bending capacity and impact resistance of the support plate 100 can be adjusted by adjusting the length L, width w, spacing X, and radius R of the opening kk, combined with the width Yp1 of the first rib j1, the width Yp2 of the second rib j2, and the width Yc of the third rib j3. Furthermore, because the width Yc of the third rib j3 is relatively small, the impact resistance of the opening group is weak, making it prone to deformation. Therefore, the spacing x needs to be set greater than the width Yp1 of the first rib j1 to improve the impact resistance of the opening group. However, if the spacing x is too large, it will affect the bending capacity. Therefore, the embodiments of this application select a range of values ​​for the above parameters to improve the impact resistance of the bending area wx while satisfying the bending capacity of the bending area wz of the support plate 100.

[0096] Please refer to Figure 4, which shows a schematic diagram of the structure of the support plate 100 bent in a teardrop shape. According to Figure 4, the bending area wz includes an inner bending area z1, a transition area z2, and an outer bending area z3 connected in sequence. The outer bending area z3 is connected to the non-bending area nw, and the first opening area h1 and the second opening area h2 are located in the inner bending area z1.

[0097] Among them, the inner bending zone z1 is a local area close to the transition zone z2, the outer bending zone z3 and the transition zone z2 are non-opening zones h3.

[0098] It is understandable that, for the teardrop-shaped bending area wz, the inner bending area z1 is the area subjected to the greatest impact force and bending stress. Therefore, the first opening area h1 and the second opening area h2 are set in the inner bending area z1 to coordinate the bending capacity and impact resistance of the support plate 100.

[0099] Please refer to Figures 5 and 6. Figure 5 is a bending stress distribution cloud diagram based on the teardrop-shaped bend of the support plate 100 corresponding to Figure 2. Figure 6 is a bending stress distribution cloud diagram based on the teardrop-shaped bend of the support plate 100 corresponding to Figure 3. Based on Figures 5 and 6, it can be seen that after adjusting the first rib j1 and the second rib j2, the stress on the bending area wz of the support plate 100 is not high. The bending area wz of the support plate 100 not only meets the bending capacity requirements but also improves the impact resistance of the bending area wz.

[0100] Please refer to Figures 7 and 8. Figure 7 shows a schematic view of the bending region wz in the support plate 100 of one or more embodiments of this application. Figure 8 is a partial schematic diagram between the first opening group 11 and the second opening group 12 in Figure 7. Compared with Figure 2, the parts in Figure 7 that differ from those in the above embodiments will be described to avoid redundancy.

[0101] Referring to Figures 7 and 8, in some embodiments of this application, n = 1. In the first aperture group 11, the aperture kk includes a main cutout area k1 and an end cutout area k2, the end cutout area k2 being connected to at least one end of the main cutout area k1. In the first direction F1, the width of the main cutout area k1 is smaller than the width of the end cutout area k2.

[0102] It is understandable that, since the first hole group 11 is a single row of holes kk, and both sides of it are second ribs j2 with a relatively large width, stress concentration is more likely to occur compared with Figure 2. Therefore, a wider end hollow area k2 is set at both ends of the holes kk to reduce stress concentration. That is, the holes kk of the first hole group 11 are designed to be dumbbell-shaped, thereby improving the bending capacity of the support plate 100.

[0103] Optionally, from both ends of the opening kk towards the middle, the width of the end hollow area k2 near the main hollow area k1 gradually decreases to ensure a smooth stress transition. The hole walls of the end hollow area k2 and the main hollow area k1 are rounded for a smooth stress transition.

[0104] In addition, the end of the cutout area k2 away from the main cutout area k2 is rounded to avoid stress concentration.

[0105] Optionally, in some embodiments of this application, the second rib j2 includes a first part j21 and a second part j22 connected to the first part j21. The first part j21 is located between the main hollow area k1 and the second opening group 12, and the second part j22 is located between the end hollow area k2 and the second opening group 12. The width of the first part j21 is greater than the width of the second part j22, and the width of the second part j22 is greater than the width Yc of the third rib j3.

[0106] It is understandable that while the setting of the end hollow area k2 improves the bending performance of the support plate 100, it will correspondingly reduce the impact resistance of the support plate 100. Therefore, setting the width of the second part j22 to be greater than the width Yc of the third rib j3 can ensure that the impact resistance does not decrease too much.

[0107] Optionally, in some embodiments of this application, the length of the second part j22 is less than or equal to one-third of the length of the first part j21, so as to improve the impact resistance of the support plate 100 while ensuring the bending ability of the support plate 100.

[0108] Please refer to Figure 9, which is a bending stress distribution cloud diagram based on the teardrop-shaped bend of the support plate 100 corresponding to Figure 7. As shown in Figure 9, after adjusting the first rib j1, the second rib j2, and the dumbbell-shaped opening, the stress on the bending area wz of the support plate 100 is not high. The bending area wz of the support plate 100 not only meets the bending capacity requirements but also improves its impact resistance.

[0109] In addition, compared to Figure 5, the stress on the end hollow area k2 is relatively uniform, which reduces the risk of stress concentration at the end of the opening kk.

[0110] Referring to Figure 10, correspondingly, this application embodiment also provides a display module 1000, which includes a flexible display panel 200 and a support plate 100 as described in any of the above embodiments, wherein the flexible display panel 200 is disposed on the support plate 100.

[0111] It should be noted that the structure of the support plate 100 of the display module 1000 in this application embodiment is similar to or the same as the structure of the support plate 100 described in any of the above embodiments, so it will not be described again here.

[0112] Optionally, the flexible display panel 200 can be an electroluminescent panel, such as an organic light-emitting display panel, a quantum dot light-emitting display panel, or a light-emitting diode display panel.

[0113] The support plate 100 of the display module 1000 in this embodiment includes a first hole group 11 and a second hole group 12 disposed in the bending area wz. In the first direction F1, a first rib j1 is connected between two adjacent rows of second hole groups 12, a second rib j2 is connected between adjacent first hole groups 11 and second hole groups 12, and a third rib j3 is connected between two adjacent rows of openings kk in a second hole group 12.

[0114] It is understandable that in the first direction F1, the width Yp1 of the first rib j1 and the width Yp2 of the second rib j2 are both greater than the width Yc of the third rib j3. That is, the rib width between the opening groups is increased, thereby improving the impact resistance of the support plate. The rib width within the opening group is smaller to meet the bending capacity requirements.

[0115] Accordingly, this application also provides a display device, which includes the display module 1000 described in any of the above embodiments.

[0116] Optionally, the display device can be applied to and used in a variety of products, including, for example, televisions, laptop computers, monitors, billboards, Internet of Things (IoT) devices, and portable electronic devices including mobile phones, smartphones, tablet computers, mobile communication terminals, electronic notebooks, e-books, portable multimedia players (PMPs), navigation devices, and ultra-mobile personal computers (UMPCs).

[0117] Furthermore, according to some embodiments, the display device can be applied to and used within wearable devices, including smartwatches, watch phones, glasses-type displays, and head-mounted displays (HMDs). Additionally, according to some embodiments, the display device can be applied to instrument panels for automobiles, displays in central dashboards or central information displays (CIDs) arranged on instrument panels, interior mirror displays replacing side mirrors, and displays for entertainment systems arranged on the back of the front seats for rear-seat passengers in automobiles.

[0118] The support plate of the display device in this embodiment includes a first hole group 11 and a second hole group 12 disposed in the bending area wz. In the first direction F1, a first rib j1 is connected between two adjacent rows of second hole groups 12, a second rib j2 is connected between adjacent first hole groups 11 and second hole groups 12, and a third rib j3 is connected between two adjacent rows of holes kk in a second hole group 12.

[0119] It is understandable that in the first direction F1, the width Yp1 of the first rib j1 and the width Yp2 of the second rib j2 are both greater than the width Yc of the third rib j3. That is, the rib width between the opening groups is increased, thereby improving the impact resistance of the support plate. The rib width within the opening group is smaller to meet the bending capacity requirements.

[0120] The above provides a detailed description of a support plate, display module, and display device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display module, comprising a support plate and a flexible display panel disposed on the support plate, the support plate comprising a bending region and a non-bending region, the non-bending region being located on both sides of the bending region, the bending region having a bending axis; The support plate includes a first opening group and a second opening group disposed in the bending area. In a first direction, the second opening group is arranged on both sides of the first opening group, and the first opening group is disposed corresponding to the bending axis. The first group of openings has 2n-1 rows of openings, where n is a positive integer; the second group of openings has 2m rows of openings, where m is a positive integer; the openings in each row extend along a second direction and are arranged in a specific pattern; the first direction intersects the second direction. In the first direction, a first rib connects two adjacent rows of the second opening groups, a second rib connects adjacent first opening groups and second opening groups, and a third rib connects two adjacent rows of openings in a second opening group. The width of the first rib and the width of the second rib are both greater than the width of the third rib.

2. The display module according to claim 1, wherein, The first group of openings consists of one row, and the second group of openings consists of an even number of rows. In the top view of the support plate, the pattern of the bending area is symmetrical about the bending axis, and the pattern of the first opening group is symmetrical about the bending axis.

3. The display module according to claim 2, wherein, The width of the first rib is equal to the width of the second rib, and in the first direction, the widths of two adjacent first ribs are equal.

4. The display module according to claim 2, wherein, The width of the second rib is greater than the width of the first rib.

5. The display module according to claim 4, wherein, The width of the first rib decreases from the bending axis toward the non-bending area.

6. The display module according to any one of claims 1-5, wherein, In the first direction, the width of the first rib and the width of the second rib are both between 1.5 and 2 times the width of the third rib.

7. The display module according to any one of claims 1-5, wherein, The width of the first rib and the width of the second rib are between 0.2 mm and 0.3 mm, and the width of the third rib is between 0.1 mm and 0.2 mm.

8. The display module according to any one of claims 1-5, wherein, The value of n is negatively correlated with the number of the first reinforcing bars, and the value of m is negatively correlated with the number of the first reinforcing bars.

9. The display module according to any one of claims 1-5, wherein, n = 1 or 2, m = 1 or 2.

10. The display module according to any one of claims 2-5, wherein, n=1. In the first group of openings, the opening includes a main cutout area and an end cutout area. The end cutout area is connected to at least one end of the main cutout area. In the first direction, the width of the main cutout area is smaller than the width of the end cutout area.

11. The display module according to claim 10, wherein, The second rib includes a first part and a second part connected to the first part. The first part is located between the main hollow area and the second opening group, and the second part is located between the end hollow area and the second opening group. The width of the first part is greater than the width of the second part, and the width of the second part is greater than the width of the third rib.

12. The display module according to any one of claims 2-5, wherein, The bending area includes a first opening area and a second opening area disposed on both sides of the first opening area. The second opening area is disposed between the first opening area and the non-bending area, and the bending axis is located in the first opening area. In the top view of the support plate, in the first direction, a plurality of openings are arranged in rows, and two adjacent rows of openings partially overlap each other, and the length direction of the openings is the second direction; In the first opening area, the openings in the same row are of equal length; In the second opening area, the length of the openings in the same row decreases in the direction from the first opening area to the non-bending area.

13. The display module according to claim 12, wherein, In a top view of the support plate, the support plate has a first side and a second side arranged opposite to each other. Both the first side and the second side are perpendicular to the extension direction of the bending axis. In the second direction, the first row of openings penetrates the first side, and the last row of openings penetrates the second side. The distance between two adjacent openings in the second direction is greater than the width of the first rib.

14. The display module according to claim 13, wherein, In a top view of the support plate, in the first direction, the width of the opening is between 0.08 mm and 0.2 mm; in the second direction, the distance between two adjacent openings is between 0.2 mm and 0.4 mm, and the length of the opening is between 4 mm and 9 mm; the two ends of the opening are semi-circular, and the radius of the semi-circle is half the width of the opening.

15. The display module according to claim 12, wherein, The bending area includes an inner bending area, a transition area and an outer bending area connected in sequence. The outer bending area is connected to the non-bending area. The first opening area and the second opening area are located in the inner bending area. Among them, the inner bending area near the transition area, the outer bending area, and the transition area are non-opening areas.

16. A display device, comprising a display module, the display module comprising a support plate and a flexible display panel disposed on the support plate, the support plate comprising a bending region and a non-bending region, the non-bending region being located on both sides of the bending region, the bending region having a bending axis; The support plate includes a first opening group and a second opening group disposed in the bending area. In a first direction, the second opening group is arranged on both sides of the first opening group, and the first opening group is disposed corresponding to the bending axis. The first group of openings has 2n-1 rows of openings, where n is a positive integer; the second group of openings has 2m rows of openings, where m is a positive integer; the openings in each row extend along a second direction and are arranged in a specific pattern; the first direction intersects the second direction. In the first direction, a first rib connects two adjacent rows of the second opening groups, a second rib connects adjacent first opening groups and second opening groups, and a third rib connects two adjacent rows of openings in a second opening group. The width of the first rib and the width of the second rib are both greater than the width of the third rib.

17. The display device according to claim 16, wherein, The first group of openings consists of one row, and the second group of openings consists of an even number of rows. In the top view of the support plate, the pattern of the bending area is symmetrical about the bending axis, and the pattern of the first opening group is symmetrical about the bending axis.

18. The display device according to claim 17, wherein, The width of the first rib is equal to the width of the second rib, and in the first direction, the widths of two adjacent first ribs are equal.

19. The display device according to claim 17, wherein, The width of the second rib is greater than the width of the first rib.

20. The display device according to claim 19, wherein, The width of the first rib decreases from the bending axis toward the non-bending area.

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