CN116682322A - Display module and display device - Google Patents

Abstract

The invention relates to the technical field of display, in particular to a display module and a display device, wherein the display module comprises a display panel and a supporting piece, and the supporting piece is arranged on one side of the display panel; the support piece comprises a non-bending area and a half-engraving area which are positioned on at least one side of the bending shaft, and the half-engraving area is positioned on one side of the non-bending area, which is close to the bending shaft; the support piece is provided with a first groove, the first groove is located in the half-engraving area, an opening of the first groove faces the display panel, and the first direction is intersected with the bending axis. According to the display module, the opening of the first groove positioned at the half-engraving area of the support piece faces the display panel, so that the probability of overlarge local stress at the half-engraving area can be reduced to a certain extent, and the reliability of the display module is improved.

Description

Display module and display device

Technical Field

The invention relates to the technical field of display, in particular to a display module and a display device.

Background

With the continuous breakthrough of various technologies of display devices, flexible display has entered a commercialization stage, and in recent years, various terminal manufacturers have successively introduced folding and curling display devices.

In a flexible foldable display device, in order to ensure that a display module has good overall flatness, the display module generally adopts a thinner stainless steel plate as a supporting member; aiming at the display module in the water drop type bending form, a bending section which bends inwards (bends towards the direction of the display panel) and outwards (bends away from the direction of the display panel) exists in the bending form, the bending section is matched with the bending form of the display module, a half-engraving area is arranged at the outwards bending section of the support piece, half-engraving grooves are formed at the half-engraving area, the half-engraving grooves are positioned on one side of the support piece, which is away from the display panel, and the half-engraving grooves are used for deforming and releasing stress; at present, the support piece of the structural display module is larger in stress at the half-etching area, and the phenomenon of uneven stress is easy to occur.

Disclosure of Invention

In view of this, the present invention provides a display module and a display device, which aims to solve the technical problem of uneven stress of the support member at the outward bending section of the display module, and improve the reliability of the display module.

The technical scheme of the invention is as follows:

in one aspect, the invention provides a display module, comprising a display panel and a support member, wherein the support member is provided with a first surface and a second surface which are oppositely arranged, and the display panel is arranged on one side of the first surface away from the second surface;

the support piece is provided with a bending shaft;

the support piece comprises a non-bending area and a half-engraving area which are positioned on at least one side of the bending shaft along a first direction, wherein the half-engraving area is positioned on one side of the non-bending area, which is close to the bending shaft;

the support piece is provided with a first groove, the first groove is located in the half-engraving area, an opening of the first groove faces the display panel, and the first direction is intersected with the bending axis.

Based on the same inventive concept, the invention also provides a display device comprising the display module.

Compared with the related art, the display panel and the display device provided by the invention have the advantages that at least the following effects are realized:

the support piece in the display module is provided with the first groove, the first groove is positioned in the half-engraving area, and the opening of the first groove faces the display panel, so that when the support piece is bent, the stress generated at the half-engraving area is released towards the direction away from the center of the half-engraving area, the stress at the half-engraving area is not easy to concentrate, and the phenomenon of overlarge local stress is not easy to occur; therefore, the display module provided by the invention has the advantages that the opening of the first groove positioned at the half-engraving area of the support piece faces the display panel, so that the probability of overlarge local stress at the half-engraving area can be reduced to a certain extent, and the reliability of the display module is further improved.

Of course, it is not necessary for any one product embodying the invention to achieve all of the technical effects described above at the same time.

Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a display module in a folded state according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a display module in an unfolded state according to an embodiment of the present invention;

fig. 3 is a top view of a display module according to an embodiment of the invention;

fig. 4 is a schematic structural diagram of a display module provided in an embodiment of the invention at a half-etched area of a supporting member;

FIG. 5 is a schematic view of a partial area structure of a supporting member used in a display module according to the related art;

FIG. 6 is a schematic view showing a structure of a display module using the support shown in FIG. 5 at half-etched areas of the support;

FIG. 7 is a cross-sectional view of the display module shown in FIG. 3 at A-A;

FIG. 8 is a schematic view of a partial area of a support member according to an embodiment of the present invention;

fig. 9 is a schematic diagram of another structure of a display module according to an embodiment of the invention;

fig. 10 is a schematic structural view of a partial area of a support member in a display module according to an embodiment of the invention;

FIG. 11 is a cross-sectional view B-B of FIG. 10;

fig. 12 is a schematic structural view of a partial area of a support member in a display module according to an embodiment of the invention;

fig. 13 is a schematic structural view of a partial area of a support member in a display module according to an embodiment of the invention;

fig. 14 is a schematic structural diagram of a partial area of a display module according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a local area of a display module according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of a partial area of a display module according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a local area of a display module according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a display device according to an embodiment of the invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims (the claims) and their equivalents. The embodiments provided by the embodiments of the present invention may be combined with each other without contradiction.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

The invention provides a display module, which comprises a display panel and a support piece, wherein the display panel is arranged on one side of the support piece; the support piece is provided with a bending shaft; along the first direction, the support piece comprises a non-bending area and a half-engraving area which are positioned on at least one side of the bending shaft, and the half-engraving area is positioned on one side of the non-bending area, which is close to the bending shaft; the support piece is provided with a first groove, the first groove is positioned in the half-engraving area, an opening of the first groove faces the display panel, and a first direction is intersected with the bending shaft; therefore, when the support piece is bent, the stress generated at the half-engraving area is released towards the direction away from the center of the half-engraving area, so that the stress at the half-engraving area is not easy to concentrate and the phenomenon of overlarge local stress is not easy to occur; therefore, the display module provided by the invention has the advantages that the opening of the first groove positioned at the half-engraving area of the support piece faces the display panel, so that the probability of overlarge local stress at the half-engraving area can be reduced to a certain extent, and the reliability of the display module is further improved.

The foregoing is the core idea of the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments that may be obtained by a person of ordinary skill in the art without making any inventive effort are within the scope of the embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a display module in a folded state according to an embodiment of the present disclosure; fig. 2 is a schematic structural diagram of a display module in an unfolded state according to an embodiment of the present invention; fig. 3 is a top view of a display module according to an embodiment of the invention; fig. 4 is a schematic structural diagram of a display module provided in an embodiment of the invention at a half-etched area of a supporting member.

Referring to fig. 1 to 4, the display module of the present invention includes a display panel 1 and a supporting member 2, wherein the supporting member 2 is located at one side of the display panel 1; the support 2 has a bending axis; along the first direction X, the support 2 includes a non-bending region P1 and a half-etched region W2 located on at least one side of the bending axis Z, and the half-etched region W2 is located on one side of the non-bending region P1 close to the bending axis Z; the support 2 is provided with a first groove 21, the first groove 21 is located in the half-etched area W2, an opening of the first groove 21 faces the display panel 1, and the first direction X intersects the bending axis Z.

Specifically, referring to fig. 1, 2 and 3, in some alternative embodiments of the present invention, when the display module is folded about the bending axis Z, the display module located at one side of the bending axis Z sequentially includes an inward bending section, a gentle transition section, an outward bending section and a non-bending section, wherein a bending direction of the inward bending section faces one side of the display panel 1, and a bending direction of the outward bending section faces one side of the supporting member 2. Corresponding to the structure of the display module in the folded state, the support 2 in the display module comprises a hollowed-out area W1, a connecting area L1, a half-engraving area W2 and a non-bending area P1, wherein the hollowed-out area W1 is positioned at an inward bending section of the display module, the connecting area L1 is positioned at a gentle transition section of the display module, the half-engraving area W2 is positioned at an outward bending section of the display module, and the non-bending area P1 is positioned at a non-bending section of the display module.

With continued reference to fig. 1, 2 and 3, in general, in order to ensure that the display module has good overall flatness, the supporting member 2 is disposed on one side of the display panel 1 in a whole layer, and has functions of supporting and shaping the display panel 1; when the display module is folded, the support member 2 deforms to generate a certain stress, and because of the difference between the elastic modulus of the support member 2 and the materials of the film layers of the display panel 1, the phenomenon of inconsistent stress deformation between the film layers usually exists in the folding process, and particularly, when the stress generated by the support member 2 in the deformation process is not properly released and is accumulated to a certain extent, the phenomenon of debonding and fracture between the film layers of the display module can be caused.

Fig. 5 is a schematic view of a partial area structure of a supporting member used in a display module in the related art, fig. 6 is a schematic view of a structure of the display module using the supporting member shown in fig. 5 at a half-etched area of the supporting member, and as shown in fig. 5, in order to make the supporting member 2' not only play a role in supporting and shaping a shape during folding of the module, but also prevent a problem that the supporting member 2' is too stressed or uneven during bending to cause a failure of the display panel 1', in general, the supporting member 2' structurally includes a hollowed-out area W1', a connecting area L1', a half-etched area W2', and a non-bent area P1', the hollowed-out area W1' is generally provided with a hollowed-out structure, the hollowed-out design can reduce the rigidity of the supporting member 2' at the hollowed-out area W1', and a plurality of hollowed-out structures 12' can be utilized to generate accumulated deformation during bending of the supporting plate, so that the supporting member 2' has a certain bending property and ductility; because the bending degree of the position of the half-engraving area W2' is smaller than that of the hollow area W1', the half-engraving area W2' is provided with a plurality of half-engraving grooves 21', and the depth of the half-engraving grooves 21' is smaller than that of the supporting piece; as shown in fig. 6, the half-groove 21 'is provided on the side of the support away from the display panel 1'.

At present, the stress condition of the display module structure shown in fig. 5 in the folded state is analyzed, and the analysis result shows that the stress of the support member 2' at the half-etched area W2' is larger, which has a risk to the display panel 1 '. Further analysis shows that when the support member 2' is in a bent state, as shown by the arrow direction in fig. 6, the stress of the half-etched area W2' tends to concentrate toward the central axis direction of the half-etched area, and therefore, the stress at the half-etched area W2' is difficult to be released, and the stress concentration is easy to occur, which easily results in a larger local stress.

In view of this, the present invention proposes a display module, which breaks the conventional way of disposing the half-groove 21 'of the half-etched area W2' on the side of the support 2 'away from the display panel' 1, and disposing the slot of the half-etched area on the side of the support near the display panel, as shown in fig. 4, the opening of the first groove 21 located in the half-etched area W2 faces the display panel 1; thus, referring to fig. 3, when the supporting member 2 is bent, the stress generated at the half-etched area W2 is released in a direction away from the center of the half-etched area, so that the stress at the half-etched area W2 is not easy to concentrate and is not easy to cause the phenomenon of overlarge local stress; therefore, the display module of the invention can reduce the probability of overlarge local stress at the half-engraving area W2 to a certain extent by directing the opening of the first groove 21 at the half-engraving area W2 of the supporting piece to the display panel 1, thereby improving the reliability of the display module.

It should be noted that fig. 1, fig. 2 and fig. 3 are only schematic structural diagrams of the display module of the present invention, and are intended to illustrate the position and stress condition of the half-etched area W2, and are not intended to limit the structure of the display module of the present invention; in other embodiments, the display module may have other bending configurations, such as no connection area L1, or multiple half-etched areas W2.

It should be noted that, the bending axis Z is an axis when the display module is folded, and is not a separate physical axis of the display module; the bending axis Z shown in FIGS. 1 and 2 should be a straight line parallel to the plane of the display module, and the direction of the bending axis Z should be perpendicular to the paper surface and represent a point; in order to facilitate visual presentation of the bending axis Z, the bending axis Z is shown in broken lines in FIGS. 1 and 2.

Fig. 7 is a cross-sectional view of the display module shown in fig. 3 at A-A, fig. 8 is a schematic structural view of a supporting member in the display module according to an embodiment of the present invention, please refer to fig. 7 and fig. 8, in some alternative embodiments of the present invention, the number of first grooves 21 is plural, the plural first grooves 21 are arranged along a first direction X, extend along a second direction Y, and two first grooves 21 adjacent along the first direction X are provided with first supporting ribs 22; the second direction Y is parallel to the bending axis z.

Specifically, referring to fig. 1, 4, 7 and 8, when the display module is bent, the support member 2 deforms, and bending away from the display panel 1 occurs at the half-etched area W2, so that stress is generated at the support member 2 due to the deformation at the half-etched area W2; the support 2 in the display module of the invention is provided with a plurality of first grooves 21 which are opened towards one side of the display panel 1 at the half-engraving area W2, and as mentioned above, the first grooves 21 which are opened towards the display panel 1 have the function of releasing stress and avoiding local stress concentration; also as described above, the support member 2 of the present invention has the function of supporting and shaping the display panel 1, so that the first recess 21 is provided not only in consideration of stress release but also in consideration of rigidity of the support member 2; as shown in fig. 4, when the support member 2 is bent, the stress generated at the half-etched area W2 is released in a direction away from the center of the half-etched area W2, so, as shown in fig. 7 and 8, the plurality of first grooves 21 are arranged along the first direction X, and thus, the arrangement direction of the first grooves 21 is consistent with the release direction of the stress, so that the stress can be released better; in addition, the first groove 21 extends along the second direction Y, the second direction Y is parallel to the bending axis Z, and the support member 2 is easier to deform at the half-engraving area W2, so that the depth of the first groove 21 can be relatively shallow, and the rigidity of the support member 2 at the half-engraving area W2 can be considered; in addition, the first grooves 21 of the present invention are arranged in the first direction X and extend in the second direction Y, and thus the structure is relatively regular and easy to process.

It should be noted that fig. 7 and 8 only show one structural form of the support member 2, and are intended to illustrate the opening, arrangement and extending direction of the first grooves 21 in the half-etched area W2, but the structure of the support member 2 at the half-etched area W2 of the present invention is not limited to the structure shown in fig. 8, and as in practical application, the structure of the support member 2 at the half-etched area W2 may also take various forms, for example, the plurality of first grooves 21 may be arranged in an array, including a plurality of groove columns arranged along the first direction X, each groove column including a plurality of first grooves 21 arranged along the second direction Y, and each first groove 21 extends along the second direction Y.

Fig. 9 is a schematic structural diagram of a display module provided by the embodiment of the present invention, referring to fig. 9, in some alternative embodiments of the present invention, at least a portion of the first supporting ribs 22 have a gap d with the display panel 1.

Specifically, referring to fig. 1, 4 and 9, when the display module is folded, the supporting member 2 bends away from the display panel 1 at the half-etched area W2, and a relatively large stress is generated at the side of the half-etched area W2 facing the display panel 1, and if the first supporting rib 22 contacts the display panel at this time, the stress is likely to be transferred to the display panel 1, so that the display panel 1 is stressed, and the display panel 1 may be damaged; in the invention, when the structure design of the display module is carried out, the first supporting rib 22 and the display panel keep a gap d, so that on one hand, stress generated in the bending process is prevented from being transmitted to the display panel; on the other hand, the gap d between the first support rib 22 and the display panel 1 is also advantageous for stress relief.

In addition, in some embodiments of the present invention, the first supporting rib 22 may be a groove wall between two adjacent first grooves 21, and the gap between the first supporting rib 22 and the display panel 1 may be achieved by providing a groove at the half-engraved region W2 toward the display panel 1 side.

Fig. 10 is a schematic structural view of a partial area of a supporting member in a display module according to an embodiment of the invention, and fig. 11 is a sectional view B-B of fig. 10; fig. 12 is a schematic structural view of a partial area of a support member in a display module according to an embodiment of the invention, and fig. 13 is a schematic structural view of a partial area of a support member in a display module according to an embodiment of the invention.

It should be noted that, fig. 8, fig. 10, fig. 12, and fig. 13 are schematic structural diagrams of a partial area of the support member in the display module, the first grooves 21 shown in the drawings are half-grooves, and the depth of the first grooves 21 is smaller than the thickness of the support member 2; in understanding the structure of the support shown in fig. 8, 10, 12 and 13, fig. 2, 3, 4, 7, 14, 15, 16 and 17 may be combined.

Referring to fig. 10 to 13, in some alternative embodiments of the present invention, the support 2 further includes a communication groove 23, the communication groove 23 is located in the half-etched area W2, and at least part of the communication groove 23 is opened at the first support rib 22.

Specifically, referring to fig. 1, 4, 8, 10, 11, 12 and 13, when the display module is folded, the support member 2 bends away from the display panel 1 at the half-etched area W2, relatively large stress is generated at the side of the half-etched area W2 facing the display panel 1, part of the stress is released through the first groove 21, and part of the stress is transmitted through the portion of the half-etched area W2 where the first groove 21 is not provided; at this time, as shown in fig. 8, if the first support rib 22 is not provided with the communication groove 23, the stress will be concentrated in a bar shape at the first support rib 22; the invention provides a communicating groove 23 at the first support rib 22, which aims to break the stress transmission at the first support rib 22 and avoid the stress concentration in a strip shape.

With continued reference to fig. 10-13, in some alternative embodiments of the present invention, at least a portion of the communication slot 23 coincides with at least a portion of the first recess 21.

Specifically, as described above, the communicating groove 23 functions to interrupt the propagation of stress at the first support rib 22, and at the same time, the communicating groove 23 also has the function of releasing stress; also, one of the functions of the first groove 21 is to release stress; in the present invention, at least part of the communication groove 23 coincides with at least part of the first groove 21, that is, the communication groove 23 with stress relief function communicates with the first groove 21 with relief function, so that compared with the state that the communication groove 23 and the first groove 21 are not communicated with each other, the space for stress relief is expanded, and the stress of the support member 2 at the half-engraved region W2 is better dispersed, which helps to avoid local stress concentration.

In some preferred embodiments of the present invention, as shown in fig. 10, the communication groove 23 includes a plurality of first sub communication grooves 231 and a plurality of second sub communication grooves 232, wherein the first sub communication grooves 231 are opened at the first support rib 22, the second sub communication grooves 232 are overlapped with portions of the first groove 21, and the first sub communication grooves 231 and the second sub communication grooves 232 are spaced apart and communicate with each other; in this way, the communication groove 23 and the plurality of first grooves 21 form a larger stress relief space, which helps to avoid local stress concentration. In fig. 10, 12 and 13, for the sake of clarity of illustration of the position of the communication groove 23, a large dotted line frame is used to indicate the installation area of one communication groove 23, a small dotted line frame indicates the position of the first sub-communication groove 231, and another small dotted line frame indicates the position of the second sub-communication groove 232.

With continued reference to fig. 10, 12 and 13, in some alternative embodiments of the present invention, the number of the communication slots 23 is plural, and the plurality of communication slots 23 are arranged along the second direction Y.

Specifically, in some preferred embodiments of the present invention, the communication groove 23 includes a plurality of first sub-communication grooves 231 and a plurality of second sub-communication grooves 232, wherein the first sub-communication grooves 231 are formed at the first support rib 22, the second sub-communication grooves 232 are formed at the first groove 21, and the first sub-communication grooves 231 and the second sub-communication grooves 232 are arranged at intervals and are sequentially connected in series; the plurality of communication grooves 23 may be further provided in the second direction Y, so that a larger stress relief space resembling a net structure is formed between the plurality of first grooves 21 and the plurality of communication grooves 23. Accordingly, the plurality of communication grooves 23 are aligned in the second direction Y, which contributes to the dispersion of stress over the entire support surface, avoiding local stress concentration.

With continued reference to fig. 12, in some alternative embodiments of the present invention, one end of two adjacent communication slots 23 are connected, and two adjacent communication slots 23 have an included angle α,15 ° < α < 90 °.

Specifically, as described above, the plurality of communication grooves 23 are arranged in the second direction Y, and a larger stress relief space resembling a net structure is formed between the plurality of first grooves 21 and the plurality of communication grooves 23. On the basis, one ends of two adjacent communication grooves 23 are connected, and the two adjacent communication grooves 23 have an included angle alpha, and the included angle alpha is 15 degrees and less than 90 degrees; thus, not only the communication groove 23 and the first groove 21 have a direct communication relationship, but also two adjacent connection grooves 23 have a direct communication relationship, so that larger stress can be released relatively quickly, the stress can be dispersed on the whole surface, and local stress concentration is avoided.

With continued reference to fig. 13, in some alternative embodiments of the present invention, the communication groove 23 is an annular communication groove.

Specifically, as shown in fig. 13, the annular communication groove 23 includes a plurality of first sub communication grooves 231 and a plurality of second sub communication grooves 232, wherein the first sub communication grooves 231 are formed at the first support ribs 22, the second sub communication grooves 232 are formed at the first grooves 21 between two adjacent first support ribs 22, the second sub communication grooves 232 are overlapped with the first grooves 21, and the first sub communication grooves 231 and the second sub communication grooves 232 are arranged at intervals and are connected end to end in sequence; in this way, the communication groove 23 and the plurality of first grooves 21 are deformed into a larger stress relief space, which helps to avoid local stress concentration.

Fig. 14 is a schematic structural diagram of a partial area of a display module provided by an embodiment of the present invention, please refer to fig. 14, in some alternative embodiments of the present invention, the first groove 21 is further filled with an elastic material 3.

Specifically, as mentioned above, when the display module is folded, the supporting member 2 will bend in the direction away from the display panel 1 at the half-etched area W2, a relatively large stress will be generated at the side of the half-etched area W2 facing the display panel 1, a part of the stress will be released through the first groove 21, and a part of the stress will be transmitted through the portion of the half-etched area W2 where the first groove 21 is not provided; by filling the elastic material 3 in the first groove 21, the stress of the display panel 1 can be reduced by buffering the elastic material 3 when the stress is released at the half-etched area W2.

In addition, referring to fig. 9 and 14, in some preferred embodiments of the present invention, a gap d is formed between the first supporting rib 22 and the display panel 1, and when the display module is folded, the gap d can prevent stress generated during the folding process from being transferred to the display panel 1; on the other hand, the stress release is facilitated, and on the basis, the elastic material 3 can be filled in the gap d to further buffer the stress suffered by the display panel 1, so that the reliability of the display panel 1 is improved.

With continued reference to fig. 7, along the first direction X, the support 2 further includes a hollow area W1 and a connection area L1 located on the same side of the bending axis Z, the connection area L1 is located between the half-etched area W2 and the hollow area L1, the hollow area W1 is located between the bending axis Z and the connection area L1, and the hollow area W1 is provided with a through hole 24 penetrating through the support 2 along the thickness direction of the support 2.

Specifically, referring to fig. 1, fig. 2 and fig. 7, when the display module is folded about the bending axis Z, the display module located at one side of the bending axis Z sequentially includes an inward bending section, a gentle transition section, an outward bending section and a non-bending section, the bending direction of the inward bending section faces one side of the display panel 1, the bending direction of the outward bending section faces one side of the support member 2, the hollowed-out area W1 of the support member 2 corresponds to the inward bending section of the display module, the connection area L1 corresponds to the gentle transition section of the display module, the half-engraving area L2 corresponds to the outward bending section of the display module, and because the inward bending section needs to be deformed greatly, the support member 2 is provided with a through hole 24 at the hollowed-out area W1, so that the support member 2 deforms in the hollowed-out area W1 in the bending direction towards the bending axis Z; since the bending deformation at the half-engraved region W2 is small, the depth of the first groove 21 at the half-engraved region W2 is smaller than the thickness of the support 2; in order to improve the strength of the support piece, a connecting area L1 is arranged between the hollowed-out area W1 and the half-engraving area W2, and the arrangement of the connecting area L1 is beneficial to the improvement of the overall strength of the support piece 2.

Fig. 15 is a schematic structural diagram of a partial area of a display module provided by the embodiment of the present invention, referring to fig. 15, in some alternative embodiments of the present invention, the support 2 further includes a second groove 25, the second groove 25 is located in the connection area L1, and an opening of the second groove 25 faces the display panel 1.

Referring to fig. 1, fig. 4, and fig. 15, as shown in fig. 4, the opening of the second recess 25 located in the connection area L1 faces the display panel 1; thus, referring to fig. 3, when the supporting member 2 is bent, the stress generated in the connection region L1 is released in a direction away from the center of the connection region L1, similar to the stress release in the half-etched region W2, so that the stress concentration in the connection region L1 can be avoided.

Further, with continued reference to fig. 15, in some preferred embodiments of the present invention, the width of the second groove 25 or the depth of the second groove 25 or both the width and depth of the second groove 25 may be smaller than the first groove 21 due to the smaller deformation at the connection region L1 and smaller stress; because the through hole 24 is arranged at the hollowed-out area W1, the half-engraved groove 21 is arranged at the half-engraved area W2, and the second groove 25 with the width or depth smaller than that of the first groove 21 is arranged at the connecting area L1, the stress distribution of the support piece 2 from the hollowed-out area W1, the connecting area L1 to the half-engraved area W2 is relatively uniform, and the quality of the display module is improved.

With continued reference to fig. 15, in some alternative embodiments of the present invention, the number of the second grooves 25 is plural, the plurality of second grooves 25 are arranged along the first direction X and extend along the second direction Y, and a second supporting rib 26 is disposed between two adjacent second grooves 25; the second direction Y is parallel to the bending axis Z; at least part of the second supporting ribs 26 has a gap d1 with the display panel 1.

Specifically, referring to fig. 1, fig. 4 and fig. 15, when the display module is folded, the supporting member 2 bends in the direction away from the display panel 1 at the connection area L1, and stress is generated at the side of the connection area L1 facing the display panel, and if the second supporting rib 26 contacts the display panel 1 at this time, the stress is likely to be transferred to the display panel 1, so that the display panel 1 is stressed; in the invention, when the structural design of the display module is carried out, the second supporting rib 26 and the display panel are kept with the gap d1, so that on one hand, the stress generated in the bending process can be prevented from being transmitted to the display panel 1; on the other hand, the gap d1 between the second support rib 26 and the display panel 1 is also advantageous for stress relief.

Fig. 16 is a schematic structural diagram of a local area of a display module according to an embodiment of the present invention, please refer to fig. 16, in order to further buffer stress generated by the supporting member 2 in the half-etched area W2 and the connection area L1, and avoid damage to the display panel, the second grooves 25 and the gaps d1 between the second supporting ribs 26 and the display panel 1 are filled with the elastic material 3, so that the stress can be buffered by the elastic material 3 when the stress is released in the half-etched area W2 and the connection area L1, and the stress applied to the display panel 1 is reduced.

Fig. 17 is a schematic structural diagram of a partial area of a display module provided by an embodiment of the present invention, please refer to fig. 17, in some embodiments of the present invention, along a first direction X, a width of a first groove 21 near a middle position of a half-etched area W2 is wider than a width of a first groove 21 far from the middle position of the half-etched area W2; and/or, along the first direction X, the depth of the first groove 21 near the middle position of the half-etched region W2 is deeper than the depth of the first groove 21 far from the middle position of the half-etched region W2.

Specifically, the widening of the width or the deepening of the depth of the first groove 21 contributes to the expansion of the stress relief space, which contributes to the relief of the stress; and because the stress at the half-etched area W2 decreases from the middle position of the half-etched area to the two side positions along the first direction X, the width of the first groove 21 near the middle position of the half-etched area W2 is designed to be wider than the width of the first groove 21 far from the middle position of the half-etched area W2; and/or, along the first direction X, the depth of the first groove 21 near the middle position of the half-etched area W2 is deeper than the depth of the first groove 21 far from the middle position of the half-etched area W2, so that the stress distribution of the support member 2 at the half-etched area W2 is more uniform, the stress is smaller, and the strength of the support member 2 is also ensured.

Based on the same inventive concept, the present invention also provides a display device, please refer to fig. 18, fig. 18 is a schematic structural diagram of a display device provided in an embodiment of the present invention, and the display device 200 provided in the embodiment includes the display module 100 provided in any of the above embodiments.

It should be understood that the display device 200 provided in the embodiment of the present invention may be a display device with a display function, such as a computer, a mobile phone, a tablet, etc., which is not particularly limited in the present invention. The display device provided by the embodiment of the present invention has the beneficial effects of the display panel provided by the embodiment of the present invention, and the specific description of the display panel in the above embodiments may be referred to specifically, and this embodiment is not repeated here.

In summary, the display panel and the display device provided by the invention at least realize the following beneficial effects:

according to the display module, the opening of the first groove 21 positioned at the half-engraving area W2 of the support piece faces the display panel 1, so that the probability of overlarge local stress at the half-engraving area W2 can be reduced to a certain extent, and the reliability of the display module is further improved.

While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (14)

1. The display module is characterized by comprising a display panel and a support piece, wherein the support piece is positioned on one side of the display panel;

the support piece is provided with a bending shaft;

the support piece comprises a non-bending area and a half-engraving area which are positioned on at least one side of the bending shaft along a first direction, wherein the half-engraving area is positioned on one side of the non-bending area, which is close to the bending shaft;

the support piece is provided with a first groove, the first groove is located in the half-engraving area, an opening of the first groove faces the display panel, and the first direction is intersected with the bending axis.

2. The display module according to claim 1, wherein the number of the first grooves is plural, the plural first grooves are arranged along the first direction and extend along the second direction, and a first supporting rib is arranged between two adjacent first grooves along the first direction; the second direction is parallel to the bending axis.

3. The display module of claim 2, wherein at least a portion of the first support rib has a gap with the display panel.

4. The display module assembly of claim 2, wherein the support member further comprises a communication slot, the communication slot being located in the half-etched region, at least a portion of the communication slot being located at the first support rib.

5. The display module assembly of claim 4, wherein at least a portion of the communication slot coincides with at least a portion of the first recess.

6. The display module of claim 5, wherein the number of communication grooves is plural, and the plurality of communication grooves are arranged along the second direction.

7. The display module according to claim 6, wherein one ends of two adjacent communication grooves are connected, and the two adjacent communication grooves have an included angle α,15 ° < α < 90 °.

8. The display module of claim 6, wherein the communication groove is an annular communication groove.

9. The display module of claim 1, wherein the first recess is further filled with an elastic material.

10. The display module assembly of claim 1, wherein along the first direction, the support member further comprises a hollowed-out area and a connection area located on the same side of the bending axis, the connection area is located between the half-etched area and the hollowed-out area, the hollowed-out area is located between the bending axis and the connection area, and the hollowed-out area is provided with a through hole penetrating through the support member along the thickness direction of the support member.

11. The display module of claim 10, wherein the support further comprises a second groove, the second groove being located in the connection region, the second groove opening toward the display panel.

12. The display module assembly of claim 11, wherein the number of second grooves is a plurality, the plurality of second grooves are arranged along the first direction and extend along the second direction, and second support ribs are arranged between two adjacent second grooves; the second direction is parallel to the bending axis; at least part of the second supporting ribs are provided with gaps with the display panel.

13. The display module of claim 1, wherein a width of the first groove near the middle of the half-etched area is wider than a width of the first groove far from the middle of the half-etched area in the first direction;

and/or, along the first direction, the depth of the first groove close to the middle position of the half-etching area is deeper than the depth of the first groove far from the middle position of the half-etching area.

14. A display device comprising a display module according to any one of claims 1 to 13.