Supporting piece, display module and display device

Abstract

The utility model relates to the technical field of display devices, and particularly discloses a supporting piece, a display module and a display device. The display module comprises a supporting piece, wherein the supporting piece comprises a patterning area, a first straight area and a second straight area; at least one of the first straight region and the second straight region includes a glass layer. According to the invention, the supporting plate with both supporting performance and light and thin performance is provided, so that the light weight of the flexible display device is facilitated.

Description

Technical Field

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

[0002] OLED (organic light emitting diode) display panels have advantages such as high contrast, wide color gamut, wide viewing angle, and low power consumption, and are widely used in display devices such as mobile phones and laptops. OLED display panels have good flexibility and can be used in foldable display devices such as foldable phones. However, current foldable display devices face the technical challenge of not being able to perfectly balance the support and lightweight nature of the flexible display panel. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a support member, a display module, and a display device, which facilitates the lightweighting of flexible display devices by providing a support plate that balances support and thinness.

[0004] In a first aspect, this application provides a display module, which includes a flexible display panel and a support member, wherein the support member is located on the backlight side of the flexible display panel;

[0005] The aforementioned flexible display panel includes a bendable area and a non-bendable area;

[0006] The aforementioned support components include patterned areas and flat areas;

[0007] The orthographic projection of the patterned area of ​​the aforementioned support member onto the aforementioned flexible display panel at least partially overlaps with the aforementioned bendable area;

[0008] The orthographic projection of the straight area of ​​the aforementioned support member onto the aforementioned flexible display panel at least partially overlaps with the aforementioned non-bending area;

[0009] The aforementioned support components include a glass layer;

[0010] The aforementioned support member has a gap; the aforementioned display module includes a rotating shaft; the aforementioned gap mates with the aforementioned rotating shaft.

[0011] In some embodiments, the patterned area and the flat area of ​​the support member are arranged along a first direction;

[0012] The aforementioned support member includes a first support layer and a second support layer arranged along a second direction; the second direction intersects with the first direction.

[0013] The first support layer is different from the second support layer;

[0014] At least one of the first support layer and the second support layer comprises the glass layer.

[0015] In some embodiments, the second support layer is disposed toward the flexible display panel, and the first support layer is located on the side of the second support layer that is away from the flexible display panel.

[0016] The first support layer mentioned above includes the glass layer mentioned above.

[0017] In some embodiments, the thickness of the first support layer is h1;

[0018] The thickness of the second support layer is h2; satisfying: h1 > h2.

[0019] In some embodiments, the thickness h1 of the first support layer and the thickness h2 of the second support layer satisfy: h1 / h2 = 2 to 6.

[0020] In some embodiments, the first support layer includes a gap and a first straight area located on both sides of the gap;

[0021] The aforementioned display module includes a hinge;

[0022] The aforementioned gap is interference-fitted with the aforementioned shaft.

[0023] In some embodiments, the first support layer includes a first patterned area and a first flat area, wherein the first patterned area includes a first perforated hole;

[0024] The aforementioned second support layer includes a second patterned area and a second flat area, wherein the aforementioned second patterned area includes a second perforated hole;

[0025] The depth-to-width ratio of the first and second perforated holes is independently selected from 0.95 to 1.05.

[0026] In some embodiments, at least one of the first and second perforations is provided with a filling adhesive layer;

[0027] The aforementioned filler layer includes an acrylic adhesive layer.

[0028] In some embodiments, the glass layer is provided with one or more of the following: weight-reducing holes and weight-reducing grooves.

[0029] In some embodiments, the glass layer is provided with a weight-reducing groove, the opening direction of which is opposite to that of the flexible display panel.

[0030] In some embodiments, the bending modulus of the above-mentioned support member is 50 GPa to 170 GPa.

[0031] In some embodiments, the density of the aforementioned support member is 2.0 g / cm³. 3 ~5.0g / cm 3 .

[0032] In some embodiments, the second support layer includes one or more of the following: a stainless steel layer, a titanium layer, a titanium alloy layer, a carbon fiber reinforced composite material layer, and a plastic layer.

[0033] In some embodiments, the first support layer comprises a glass layer, which includes one or more of silicate glass, borosilicate glass, aluminosilicate glass, and lead glass.

[0034] In some embodiments, the flexural modulus of the glass layer is 60 GPa to 90 GPa, and the density is 2.0 g / cm³. 3 ~3.0g / cm 3 .

[0035] In some embodiments, a connecting layer is provided between the first support layer and the second support layer, the connecting layer having an elastic modulus greater than or equal to 100 MPa and a density of 0.8 g / cm³. 3 ~2.0g / cm 3 .

[0036] In some embodiments, the connecting layer includes one or more of epoxy resin layer, acrylic resin layer, polyurethane resin layer, and phenolic resin layer.

[0037] A second aspect of this application is to provide a support member including a patterned area and flat areas located on both sides of the patterned area;

[0038] The patterned areas described above can be deformed to unfold or fold the flat areas on both sides;

[0039] The aforementioned support member includes a first support layer and a second support layer arranged along a second direction; the second direction intersects with the first direction.

[0040] The first support layer is different from the second support layer;

[0041] At least one of the first support layer and the second support layer comprises the glass layer.

[0042] A third aspect of this application is to provide a display device, which includes the display module described in the first aspect or the support member described in the second aspect.

[0043] The beneficial technical effects of this application are as follows:

[0044] The support provided in this application facilitates support for both the non-bent and bent portions of the flexible display panel, thereby improving the overall flatness of the flexible display panel. Furthermore, the support includes a glass layer, and the glass's bending modulus and density fall between those of existing stainless steel (SUS) and carbon fiber materials. This allows for weight reduction while simultaneously enhancing the support's structural integrity. Attached Figure Description

[0045] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0046] Figure 1A This is a schematic diagram of the foldable display device in the unfolded state according to some embodiments of this application;

[0047] Figure 1B An example is shown Figure 1A A schematic diagram of the foldable display device in a folded state;

[0048] Figure 2A This is a schematic diagram of the structure of a display module according to some embodiments of this application;

[0049] Figure 2B This is another structural schematic diagram of the display module in some embodiments of this application;

[0050] Figure 3A This is a schematic diagram of a support component according to some embodiments of this application;

[0051] Figure 3B An example is shown Figure 3A A structural diagram showing the connection between the support component and the rotating shaft;

[0052] Figure 3C This is another structural schematic diagram of the support member in some embodiments of this application;

[0053] Figure 4A This is a schematic diagram of the hollow hole structure in the support component in the prior art;

[0054] Figure 4B This is a schematic diagram of the hollow hole structure in the support component of this application;

[0055] Figure 5A , 5B , Figure 5C Another structural schematic diagram of the support member in some embodiments of this application is shown;

[0056] Figure 6A , 6B , Figure 6C Another structural schematic diagram of the support member in some embodiments of this application is shown;

[0057] Figure 7A and Figure 7B An example is shown Figure 6A The process flow diagram of the support components;

[0058] Figure 7C An example is shown Figure 6B The process flow diagram of the support components;

[0059] Figure 7D An example is shown Figure 6C The process flow diagram of the support components.

[0060] Figure 8 This is a structural schematic diagram of some supporting components in existing technology.

[0061] The labels in the attached diagram are as follows:

[0062] 10000, Foldable display device; 1000, First part; 2000, Second part; 3000, Bendable part;

[0063] 4000, Display Module;

[0064] 100. Flexible display panel; 100A. Non-bending area; 100B. Bending area

[0065] 200, Support component; 200A, Flat area; 200B, Patterned area; 200c, Filler adhesive layer;

[0066] 210, First support layer; 210a, Gap; 210b, First flat area; 210c, First patterned area; 210c', First hollow hole; 210d, Weight reduction groove;

[0067] E-side, the side opposite to the first support layer;

[0068] F side, the other side opposite to the first support layer;

[0069] 220, Second support layer; 220b, Second flat area; 220c, Second patterned area; 220c', Second perforated hole;

[0070] 230 and 230', connecting layer; wherein the uncured connecting layer is numbered 230', and the cured connecting layer is numbered 230;

[0071] 230c, gaps in the connecting layer;

[0072] M, light-shielding components;

[0073] 300a, Second pressure-sensitive adhesive layer; 400, Separator layer; 300b, First pressure-sensitive adhesive layer; 500, Back film; 600a, Second optically transparent adhesive layer; 700, Polarizing film; 600b, First optically transparent adhesive layer; 800, Cover plate;

[0074] 900a, hinge; 900b, middle frame;

[0075] First direction: X-axis direction;

[0076] Second direction: Y-axis direction. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described below with reference to the accompanying drawings and specific embodiments. The embodiments in this application can be implemented in many different forms. Those skilled in the art will readily understand that the implementation methods and content can be transformed into various forms without departing from the spirit and scope of this application. Therefore, this application should not be construed as being limited only to the content described in the following embodiments. Without conflict, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0078] The accompanying drawings illustrate various structural schematics according to embodiments of this application. The scale of the drawings can be used as a reference in actual manufacturing processes, but is not limited thereto. For example, the aspect ratio of the channels, the thickness and spacing of each film layer, and the width and spacing of each signal line can be adjusted according to actual needs. The number of pixels in the display substrate and the number of sub-pixels in each pixel are not limited to the quantities shown in the drawings. The drawings described in this application are merely structural schematics, and one aspect of this application is not limited to the shapes or values ​​shown in the drawings.

[0079] In the context of this application, when a layer / element is referred to as being "above" another layer / element, the layer / element may be directly above the other layer / element, or there may be an intermediate layer / element between them. Additionally, if a layer / element is "above" another layer / element in one orientation, then when the orientation is reversed, the layer / element may be "below" the other layer / element.

[0080] In the description of this application, ordinal numbers such as "first" and "second" are used to avoid confusion of constituent elements, rather than to limit the quantity.

[0081] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. The positional relationships of the constituent elements may be appropriately changed depending on the direction in which each constituent element is described. Therefore, the terminology used is not limited to those described in the specification and may be appropriately replaced as appropriate.

[0082] In this specification, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the specific meaning of these terms in this application based on the specific circumstances.

[0083] "A and / or B" includes the following two combinations: A only, B only, and a combination of A and B.

[0084] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0085] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched regions shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0086] Portable display devices, such as communication terminals, game consoles, multimedia players, portable computers, or portable imaging devices, typically include a display device capable of displaying images. Some of these display devices have a foldable structure; for example, the aforementioned display device has two foldable housings, each with a display screen mounted on one of the two housings. While this achieves foldability, it does not provide a continuous large-screen display.

[0087] With the development of flexible display technology, flexible display panels have been applied to display devices with foldable structures. In this case, the flexible display panel can be positioned above two housings and span the connecting unit between the two housings. For example, as shown in Figures 1 and 2, an inward-folding screen device refers to an electronic device whose body can fold towards the display screen. After the body is folded, the display screen is hidden inside the body, thus creating a screen that is hidden when the body is folded and presents a normal flat screen effect when the body is unfolded. Correspondingly, an outward-folding screen device refers to an electronic device whose body can fold towards the back of the body. After the body is folded, the display screen wraps around the outside of the body, thus creating a wraparound screen when the body is folded and presenting a normal flat screen effect when the body is unfolded.

[0088] Figure 1A A schematic diagram of the foldable display device in an unfolded state is shown in some embodiments of this application. Figure 1B A schematic diagram of the foldable display device shown in Figure 1 in its folded state is illustrated.

[0089] Combination Figure 1A and Figure 1B The foldable display device 10000 in some embodiments of this application includes a first portion 1000, a second portion 2000, and a bendable portion 3000 located between the first portion 1000 and the second portion 2000. The bendable portion 3000 is capable of deformation to unfold the first portion 1000 relative to the second portion 2000 (e.g., Figure 1A (as shown) or folded (as shown) Figure 1B (As shown).

[0090] To ensure the flatness of flexible display panels, some display devices in related technologies support the non-bending portions of the panel. However, due to the relatively poor strength and rigidity of flexible display panels, the bending portions are prone to wrinkling. Furthermore, when a user presses on or applies force to the bending portions of the flexible display panel while holding the device, these portions are susceptible to collapse due to lack of support, leading to damage. Other display devices in related technologies incorporate a support structure on the back of the flexible display panel to provide some support, for example, using stainless steel (SUS) or titanium alloy. However, this support structure suffers from high material density, approximately 7.9 g / cm³. 3 and 4.5g / cm 3 This would result in a large overall weight for the display module, hindering its lightweight design. To reduce the weight of the support structure, carbon fiber, with a density of approximately 1.6 g / cm³, can be used as the support material. 3~1.8g / cm 3 This can significantly reduce the weight of the supporting structure. However, the flexural modulus of carbon fiber is only 40 GPa to 50 GPa, which is much lower than that of stainless steel (SUS) (190 GPa). Therefore, the supporting performance of carbon fiber is insufficient. To improve its supporting performance, according to the stiffness formula Q = E * h 3 (where E is the bending modulus and h is the thickness), so the thickness of the support structure needs to be increased. However, if the thickness is too thick, it will not only hinder the lightweighting of the flexible display panel, but also restrict the bending activity of the flexible display panel.

[0091] To address the aforementioned problems, this application discloses a display module, such as... Figure 2A The display module 4000 includes a flexible display panel 100 and a support member 200, the support member 200 being located on the backlight side of the flexible display panel 100; the flexible display panel 100 includes a bendable area 100B and a non-bendable area 100A; the support member 200 includes a patterned area 200B and a flat area 200A; the orthographic projection of the patterned area 200B of the support member 200 onto the flexible display panel 100 at least partially overlaps with the bendable area 100B; the orthographic projection of the flat area 200A of the support member 200 onto the flexible display panel 100 at least partially overlaps with the non-bendable area 100A; the support member 200 includes a glass layer, a gap is provided on the support member, and the display module includes a hinge, the gap engaging with the hinge.

[0092] In this application, "backlight side" refers to the flexible display panel's backlight source as a reference, with the support member 200 located on the side of the backlight source away from the flexible display panel 100. "Orthographic projection" in this application refers to a projection method where the parallel projection lines of the projected image are perpendicular to the projection plane. "At least partially overlapping" in this application includes complete overlap.

[0093] like Figure 2B As illustrated, the display module 4000 of this application also includes a second pressure-sensitive adhesive layer 300a, an isolation layer 400, a first pressure-sensitive adhesive layer 300b, a back film 500, a second optically transparent adhesive layer 600a, a polarizer 700, a first optically transparent adhesive layer 600b, a cover plate 800, etc. This application... Figure 2B The illustration only shows the other components of the display module 4000, and does not actually impose any limitations on the display module 4000 of this application.

[0094] like Figure 2AAs shown, a gap is provided in the patterned area 200B of the support member 200. This gap is used to cooperate with the rotating shaft. When the rotating shaft rotates, the patterned area 200B can deform to make the flat areas 200A on both sides unfold or fold. The positional relationship between the gap and the rotating shaft will be described in detail below with reference to the accompanying drawings.

[0095] The support provided in this application facilitates support for both the non-bent and bent portions of the flexible display panel, thereby improving the overall flatness of the flexible display panel. Furthermore, the support includes a glass layer, and the glass's bending modulus and density fall between those of existing stainless steel (SUS) and carbon fiber materials. This allows for weight reduction while simultaneously enhancing the support's structural integrity.

[0096] In some embodiments, such as Figure 3A Schematic diagram: The patterned area 200B and the flat area 200A of the aforementioned support member 200 are arranged along a first direction; the aforementioned support member 200 includes a first support layer 210 and a second support layer 220 arranged along a second direction; the aforementioned second direction intersects with the aforementioned first direction; the aforementioned first support layer 210 and the second support layer 220 are different; the aforementioned first support layer 210 and / or the aforementioned second support layer 220 include the aforementioned glass layer. This application... Figure 3A The following figures illustrate the support member 200 in its unfolded state, but this application also protects the support member in its bent state.

[0097] like Figure 3A The flat area 200A of the support member 200 is located on both sides of the patterned area 200B. The flat area 200A on one side of the patterned area 200B can be unfolded or folded relative to the flat area 200A on the other side of the patterned area 200B. Figure 3A This indicates the unfolded state.

[0098] The first direction in this application refers to the arrangement direction of the various regions on the support member 200, and may also refer to... Figure 3A The schematic coordinate axis X direction, the second direction in this application refers to the stacking direction of each support layer on the support member 200, or it can refer to... Figure 3A The Y-axis is shown in the diagram.

[0099] The first support layer 210 and the second support layer 220 of this application are stacked together. The differences between the first support layer 210 and the second support layer 220 include differences in shape, thickness, and material. The difference in material between the two is described in detail later in this application. The inclusion of a glass layer in the first support layer 210 and / or the second support layer 220 means that any one or both of the first support layer 210 and the second support layer 220 include a glass layer. As mentioned above, the glass layer can achieve both good flexural modulus and suitable density. Therefore, the design method provided by this application first improves the support of the entire flexible display panel, and secondly, it can reduce the weight of the support components to meet the lightweight requirements of the display module.

[0100] In some embodiments, combined with Figure 2A It is known that the second support layer 220 is disposed toward the flexible display panel 100, and the first support layer 210 is located on the side of the second support layer 220 away from the flexible display panel 100; the first support layer 210 includes the glass layer.

[0101] In some embodiments of this application, the first support layer 210 located away from the flexible display panel 100 is further selected to include a glass layer. While making full use of the good bending modulus and suitable density of the glass layer, it can also reduce the risk of the glass layer being easily broken due to direct contact between the glass layer and other components on the display module.

[0102] In some embodiments, combined with Figure 3A It can be seen that the thickness of the first support layer 210 is h1; the thickness of the second support layer 220 is h2; satisfying: h1>h2.

[0103] The thickness described in these embodiments refers to the stacking direction of each support layer, and may also refer to... Figure 3A The Y-axis of the schematic coordinate system represents the distance between two surfaces of each support layer that are positioned opposite each other. Figure 3A The illustration shows that the first support layer 210 includes an E-plane and an F-plane that are arranged opposite to each other. The thickness h1 of the first support layer 210 is the distance between the E-plane and the F-plane. Similarly, the thickness h2 of the second support layer 220 has the same meaning as the thickness h1 of the first support layer 210, and will not be repeated here.

[0104] In these embodiments, the thickness h1 of the first support layer 210 is greater than the thickness h2 of the second support layer 220. This is because, in order to ensure support for the flexible display panel, the thickness of the second support layer 220 in the prior art is relatively thick. The design method provided in this application is equivalent to thinning the second support layer 220, which improves the lightweight of the display module while ensuring support.

[0105] In some embodiments, the thickness h1 of the first support layer 210 and the thickness h2 of the second support layer 220 satisfy: h1 / h2 = 2 to 6.

[0106] In these embodiments, this application discloses that the thickness h1 of the first support layer 210 and the thickness h2 of the second support layer 220 satisfy any one of h1 / h2 = 2, 4, 5, 6 or any one of the ranges of both of the above.

[0107] In these embodiments, the ratio between the thickness h1 of the first support layer 210 and the thickness h2 of the second support layer 220 is further selected to be 2 to 6, so as to further balance the support of the support member on the flexible display panel and the requirements for lightweighting.

[0108] In some embodiments, combined with Figure 3A It is understood that the first support layer 210 includes a gap 210a and a first straight area 210b located on both sides of the gap 210a; the gap 210a penetrates the first support layer 210, and any shape of the gap 210a is within the protection scope of this application.

[0109] like Figure 3B As illustrated, the aforementioned display module 4000 includes a pivot 900a; and the slot 210a on the first support layer 210 is interference-fitted with the pivot 900a. As stated above, any shape of the slot 210a is within the scope of protection of this application, but the shape of the pivot 900a needs to match the shape of the slot 210a. For example, in this application… Figure 3B The diagram shows that the gap 210a is square, and the part of the rotating shaft 900a that matches the gap 210a is also square.

[0110] The pivot 900a of this application has a middle frame 900b on both sides. The pivot 900a is connected to the support member 200, and a portion of the pivot 900a extends into the support member 200. Figure 3B The schematic design method is as follows: By processing the patterned area of ​​the first support layer 210 to make room for the hinge 900a, it is beneficial to control the position of the hinge 900a on the display module 4000. By adjusting the compactness of the structure, the weight and thickness of the display module can be further controlled.

[0111] In some embodiments, such as Figure 3C As shown, the first support layer 210 includes a first patterned area 210c and a first flat area 210b, and the first patterned area 210c includes a first hollow hole 210c'.

[0112] In some embodiments, combined with Figure 3CIt is known that the second support layer 220 includes a second patterned area 220c and a second flat area 220b, and the second patterned area 220c includes a second hollow hole 220c'.

[0113] In these embodiments, the design of the first support layer 210 including a first patterned area 210c and the second support layer 220 including a second patterned area 220c is chosen to reduce the weight of the display module. Meanwhile, each patterned area includes a cutout hole, and the aspect ratio of each cutout hole is independently selected from 0.95 to 1.05.

[0114] This application is in Figure 4A and Figure 4B The diagrams illustrate the width of the perforated hole in the prior art and the width of the perforated hole in this field. Here, the depth-to-width ratio refers to the ratio between the depth and width of the perforated hole. Figure 4A The indicated distance d1 and Figure 4B The distance d2 shown represents the width of each of the cutout holes.

[0115] As described above, in these embodiments, the thickness h1 of the first support layer 210 is greater than the thickness h2 of the second support layer 220. This is because the thickness of the second support layer 220 in the prior art is relatively thick. The design provided in this application is equivalent to thinning the second support layer 220. After the second support layer 220 is thinned, the depth of the second hollow hole 220c' on the second support layer 220 is reduced. Since the depth-to-width ratio of each hollow hole is not much different from that in the prior art, after the depth of the second hollow hole 220c' is reduced, the width of the second hollow hole 220c' is also reduced. That is, compared with the width of the second hollow hole 220c' before the improvement being d1, the width of the improved second hollow hole 220c' is d2, and d2 is less than d1. As those skilled in the art will know, the display module should also possess a certain degree of impact resistance. Impact resistance refers to its ability to resist damage when subjected to external impact. This impact resistance is related to the width of the opening in the patterned area on the support member. Generally speaking, the smaller the opening width, the stronger the impact resistance. The design scheme provided in this application both thins the support member to a certain extent and reduces the opening width of the hollowed-out holes, which is beneficial to improving the impact resistance of the display module.

[0116] In these embodiments, this application discloses that the aspect ratios of the first and second perforated holes are each independently selected from any one of 0.95, 0.96, 0.97, 0.98, 0.99, 1.0, 1.01, 1.02, 1.03, 1.04, and 1.05, or satisfy any one of the ranges of both of the above.

[0117] In some embodiments, such as Figure 5AAs shown, the first cutout 210c' and / or the second cutout 220c' are provided with a filling adhesive layer 200c; the filling adhesive layer 200c includes an acrylic adhesive layer.

[0118] This application is in Figure 5A The diagram illustrates that a filling adhesive layer 200c is provided in part of the first and second cutout holes 210c' and 220c'. In reality, the filling adhesive layer 200c can also be provided in the remaining cutout holes. The filling adhesive layer 200c can be injected into the cutout holes by injection. Since the filling adhesive layer 200c is located in the patterned area, it has little impact on the flexible display panel. At the same time, the filling adhesive layer 200c can also enhance the mechanical properties of the patterned area, such as strengthening the connection between the patterned area and the flat area of ​​the support member 200, and further enhancing the impact resistance of the display module.

[0119] In some embodiments, the glass layer is provided with one or more of weight-reducing holes and weight-reducing grooves. The present application provides weight-reducing holes or grooves on the glass layer, which, while reducing the impact of the glass layer on the support of the flexible display panel, facilitates further lightweight processing of the display module.

[0120] In some embodiments, such as Figure 5B , 5C As shown, the glass layer is provided with a weight-reducing groove 210d, and the opening direction of the weight-reducing groove 210d is away from the flexible display panel 100.

[0121] As described above, the first support layer 210 includes a glass layer, therefore, in this application... Figure 5B , 5C The diagram illustrates a weight-reducing groove 210d provided on the first support layer 210. In this application, the opening direction of the weight-reducing groove 210d is chosen to be away from the flexible display panel 100 to reduce the impact on the flexible display panel in terms of impact resistance and other aspects.

[0122] In some embodiments, the bending modulus of the support member is 50 GPa to 170 GPa.

[0123] In some embodiments, the density of the support member is 2.0 g / cm³. 3 ~5.0g / cm 3 .

[0124] The flexural modulus of this application refers to the elasticity of a material under bending stress at room temperature, such as 25°C. It is generally expressed as the ratio of bending stress to the strain produced by bending. Measurement methods for the flexural modulus include any conventional method in the art, such as cutting a support into 15mm × 200mm specimens, measuring the specimen thickness h (μm) with a micrometer, and conducting a tensile test using a Gotech tensile testing machine at room temperature and pressure (25°C, 0.1MPa). The initial position is set such that the specimen length between the clamps is 50mm, and the tensile speed is 5mm / min. The tensile load L (N) and equipment displacement y (mm) are recorded until the specimen fractures. Then, the stress ε (GPa) = L / (15 × h) and the strain η = y / 50 are calculated. The stress-strain curve is plotted, and the initial linear region of the curve is taken; the slope of the curve is the flexural modulus.

[0125] The density in this application also refers to the density of the material at room temperature, such as 25°C, which is the ratio between the mass and volume of the material.

[0126] In these embodiments, this application discloses that the bending modulus of the above-mentioned support member is any one of 50GPa, 60GPa, 70GPa, 80GPa, 90GPa, 100GPa, 110GPa, 120GPa, 130GPa, 140GPa, 150GPa, 160GPa, 170GPa or any one of the above two ranges.

[0127] In these embodiments, this application discloses that the density of the aforementioned support member is 2.0 g / cm³. 3 3.0g / cm 3 4.0g / cm 3 5.0g / cm 3 It can be any one of the above or any one of the range values ​​of any two of the above.

[0128] In some embodiments, the second support layer comprises one or more of the following: a stainless steel layer, a titanium layer, a titanium alloy layer, a carbon fiber reinforced composite material layer, and a plastic layer.

[0129] In some embodiments, the first support layer comprises a glass layer, wherein the glass layer comprises one or more of silicate glass, borosilicate glass, aluminosilicate glass, and lead glass.

[0130] In some embodiments, the flexural modulus of the glass layer is 60 GPa to 90 GPa, and the density is 2.0 g / cm³. 3 ~3.0g / cm 3 .

[0131] This application further provides glass layers that satisfy the above-mentioned properties in these embodiments to further improve the lightweight nature of flexible display devices. In these embodiments, this application discloses that the flexural modulus of the glass layer is any one of 60 GPa, 70 GPa, 80 GPa, or 90 GPa, or any one of the ranges of both.

[0132] In these embodiments, this application discloses that the density of the glass layer is 2.0 g / cm³. 3 2.5g / cm 3 3.0g / cm 3 It can be any one of the above or any one of the range values ​​of any two of the above.

[0133] In some embodiments, such as Figure 6A , 6B As can be seen from 6C, a connecting layer 230 is provided between the first support layer 210 and the second support layer 220. The elastic modulus of the connecting layer 230 is greater than or equal to 100 MPa, and the density is 0.8 g / cm³. 3 ~2.0g / cm 3 .

[0134] In these embodiments, this application discloses that the elastic modulus of the connecting layer is any one of 100 MPa, 112 MPa, 120 MPa, etc., or any one of the above two ranges.

[0135] In these embodiments, this application discloses that the density of the connecting layer is 0.8 g / cm³. 3 0.9g / cm 3 1.0g / cm 3 1.1g / cm 3 1.2g / cm 3 1.3g / cm 3 1.4g / cm 3 1.5g / cm 3 1.6g / cm 3 1.7g / cm 3 1.8g / cm 3 1.9g / cm 3 2.0g / cm 3 It can be any one of the above or any one of the range values ​​of any two of the above.

[0136] In some embodiments, the connecting layer 230 includes one or more of epoxy resin layer, acrylic resin layer, polyurethane resin layer, and phenolic resin layer.

[0137] The connecting layer 230 in this application is mainly used to bond the first support layer 210 and the second support layer 220 together. Simultaneously, the connecting layer 230 also needs to minimize its impact on the weight and mechanical properties of the support member 200. Specifically, this application places the connecting layer 230 between the first support layer 210 and the second support layer 220 to form an intermediate sandwich structure. When the patterned area of ​​the support member 200 deforms to unfold or fold the first or second flat area located on both sides of the patterned area, the stress generated in the support member 200 is mainly borne by the first support layer 210 and the first support layer 220. Therefore, the impact on the mechanical properties of the connecting layer 230 is also controlled.

[0138] A second aspect of this application is to provide a method for preparing a support member, the method comprising the following preparation process:

[0139] Provide a first support layer and a second support layer;

[0140] The first support layer and the second support layer are stacked together;

[0141] The main body area of ​​the second support layer is patterned to form the second patterned area;

[0142] The main body area of ​​the first support layer is patterned to form the first patterned area;

[0143] The orthographic projection of the first patterned area onto the second support layer at least partially overlaps with the second patterned area.

[0144] This application discloses in some embodiments... Figure 6A An illustrated method for manufacturing a support member, the method being as follows: Figure 7A The illustration includes the following preparation process:

[0145] S-A100 provides a first support layer 210 made of borosilicate glass, a second support layer 220 made of stainless steel plate, and an uncured connecting layer 230' made of epoxy resin.

[0146] S-A200, the first support layer 210, the uncured connecting layer 230' and the second support layer 220 are stacked together in sequence, and the uncured connecting layer 230' is placed between the first support layer 210 and the second support layer 220; wherein, the thickness h1 of the first support layer and the thickness h2 of the second support layer satisfy: h1 / h2=4.

[0147] S-A300 processes the uncured bonding layer 230' to form a cured bonding layer 230; the cured bonding layer 230 has an elastic modulus of 112 MPa and a density of 1.25 g / cm³.3 The curing method here includes any method conventional in this field, such as photocuring or thermocuring.

[0148] S-A400, etching is performed on the area to be patterned on the first support layer 210 to form a gap 210a, and a weight reduction groove 210d is provided on the surface of the first support layer 210 facing away from the second support layer 220.

[0149] S-A500, patterning etching is performed on the area to be patterned on the second support layer 220 to form the second patterned area 220c, ultimately forming... Figure 6A The supporting component is shown in the diagram.

[0150] This application discloses in some embodiments... Figure 6A Another method for preparing the illustrated support member, as shown in the figure... Figure 7B The illustration includes the following preparation process:

[0151] S-A100' provides a first support layer 210 made of borosilicate glass, a second support layer 220 made of stainless steel plate, and an uncured connecting layer 230' made of epoxy resin.

[0152] S-A200', the first support layer 210, the uncured connecting layer 230' and the second support layer 220 are stacked together in sequence, and the uncured connecting layer 230' is placed between the first support layer 210 and the second support layer 220; wherein, the thickness h1 of the first support layer and the thickness h2 of the second support layer satisfy: h1 / h2=4.

[0153] S-A300' processes the uncured bonding layer 230' to form a cured bonding layer 230; the cured bonding layer 230 has an elastic modulus of 112 MPa and a density of 1.25 g / cm³. 3 The curing method here includes any method conventional in this field, such as photocuring or thermocuring.

[0154] This application is in Figure 7B The diagram illustrates the main body area on the side surface of the first support layer 210 facing away from the second support layer 220, where the light-shielding component M is placed on the first support layer 210, and then the stacked film layers are irradiated with light. In this case, except for the area blocked by the light-shielding component M, the uncured connecting layer 230' is formed into a cured connecting layer 230.

[0155] S-A400', the area of ​​the light-shielding component M projected onto the first support layer 210 is etched to form a gap 210a, and the area of ​​the light-shielding component M projected onto the second support layer 220 is patterned and etched to form a second patterned area 220c.

[0156] S-A500', a weight-reducing groove 210d is provided on the surface of the first support layer 210 facing away from the second support layer 220, ultimately forming Figure 6A The supporting component is shown in the diagram.

[0157] The bending modulus and density of the support components prepared by the two methods mentioned above are not significantly different.

[0158] This application discloses in some embodiments... Figure 6B An illustrated method for manufacturing a support member, the method being as follows: Figure 7C The illustration includes the following preparation process:

[0159] S-B100 provides a first support layer 210 made of borosilicate glass, a second support layer 220 made of stainless steel plate, and an uncured connecting layer 230' made of epoxy resin.

[0160] S-B200, the first support layer 210, the uncured connecting layer 230' and the second support layer 220 are stacked together in sequence, and the uncured connecting layer 230' is placed between the first support layer 210 and the second support layer 220; wherein, the thickness h1 of the first support layer and the thickness h2 of the second support layer satisfy: h1 / h2=4.

[0161] S-B300 is used to process the uncured bonding layer 230' to form a cured bonding layer 230; the cured bonding layer 230 has an elastic modulus of 112 MPa and a density of 1.25 g / cm³. 3 The curing method here includes any method conventional in this field, such as photocuring or thermocuring.

[0162] This application is in Figure 7C The diagram illustrates the main body area on the side surface of the first support layer 210 facing away from the second support layer 220, where the light-shielding component M is placed. Then, the stacked film layers are exposed to light. On the uncured connecting layer 230', except for the area blocked by the light-shielding component M, the other areas are all formed with the cured connecting layer 230.

[0163] The areas of S-B400 and the light-shielding component M projected onto the first support layer 210 and the first support layer 220 are simultaneously etched to form the first patterned area 210c, the second patterned area 220c, and the gap 230c of the connecting layer.

[0164] S-B500, a weight-reducing groove 210d is provided on the surface of the first support layer 210 facing away from the second support layer 220;

[0165] S-B600, a filling adhesive layer 200c is provided in the first hollow hole 210c' of the first patterned area 210c, the second hollow hole 220c' of the second patterned area 220c, and the gap 230c of the connecting layer; the filling adhesive layer 200c can be injected into the hollow hole by injection. Since the filling adhesive layer 200c is located in the patterned area, it has little impact on the flexible display panel. At the same time, the filling adhesive layer 200c can also enhance the mechanical properties of the patterned area, such as enhancing the connection force between the patterned area and the flat area of ​​the support member 200, and further enhancing the impact resistance of the display module.

[0166] This application discloses in some embodiments... Figure 6C An illustrated method for manufacturing a support member, the method being as follows: Figure 7D The illustration includes the following preparation process:

[0167] S-C100 provides a first support layer 210 made of borosilicate glass, a second support layer 220 made of carbon fiber, and an uncured connecting layer 230' made of epoxy resin.

[0168] S-C200, the first support layer 210, the uncured connecting layer 230' and the second support layer 220 are stacked together in sequence, and the uncured connecting layer 230' is placed between the first support layer 210 and the second support layer 220; wherein, the thickness h1 of the first support layer and the thickness h2 of the second support layer satisfy: h1 / h2=4.

[0169] S-C300 is used to process the uncured bonding layer 230' to form a cured bonding layer 230; the cured bonding layer 230 has an elastic modulus of 112 MPa and a density of 1.25 g / cm³. 3 The curing method here includes any method conventional in this field, such as photocuring or thermocuring.

[0170] This application is in Figure 7D The diagram illustrates the main body area on the side surface of the first support layer 210 facing away from the second support layer 220, where the light-shielding component M is placed. Then, the stacked film layers are exposed to light. On the uncured connecting layer 230', except for the area blocked by the light-shielding component M, the other areas are all formed with the cured connecting layer 230.

[0171] The area of ​​S-C400 and the area where the light-shielding component M is projected onto the first support layer 210 is etched to form a gap 210a.

[0172] S-C500, a weight-reducing groove 210d is provided on the surface of the first support layer 210 facing away from the second support layer 220, ultimately forming Figure 6C The supporting component is shown in the diagram.

[0173] This application is in Figure 8 The diagram also illustrates the structure of a prior art support member. When the support member is made of stainless steel plate (SUS), its density is 7.9 g / cm³. 3 With a flexural modulus of approximately 190 GPa, and when the support component is made of carbon fiber, its density is 1.6 g / cm³. 3 ~1.8g / cm 3 The flexural modulus is 40 GPa to 50 GPa.

[0174] Therefore, the design provided in this application facilitates support for both the non-bending and bending portions of the flexible display panel, thereby improving the overall flatness of the flexible display panel. Furthermore, the support component of this application includes a glass layer, and the glass's bending modulus and density are between those of existing stainless steel (SUS) and carbon fiber materials. This helps reduce the weight of the support component while further improving its support performance.

[0175] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0176] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display module, characterized by The display module comprises a flexible display panel and a support, the support is located on the backlight side of the flexible display panel; The flexible display panel comprises a bendable region and a non-bendable region; The support comprises a patterned region and a flat region; The patterned region of the support at least partially overlaps with the bendable region in the orthographic projection on the flexible display panel; The flat region of the support at least partially overlaps with the non-bendable region in the orthographic projection on the flexible display panel; The support comprises a glass layer; The support is provided with a gap; the display module comprises a rotating shaft; the gap cooperates with the rotating shaft.

2. The display module of claim 1, wherein, The patterned region and the flat region of the support are arranged along a first direction; The support comprises a first support layer and a second support layer arranged along a second direction; the second direction intersects the first direction; The first support layer and the second support layer are different; At least one of the first support layer and the second support layer comprises the glass layer.

3. The display module of claim 2, wherein, The second support layer is arranged towards the flexible display panel, and the first support layer is located on the side of the second support layer away from the flexible display panel; The first support layer comprises the glass layer.

4. The display module of any one of claims 2-3, wherein, The thickness of the first support layer is h1; The thickness of the second support layer is h2; h1>h2 is satisfied.

5. The display module of claim 4, wherein, The thickness h1 of the first support layer and the thickness h2 of the second support layer satisfy h1 / h2=2-6.

6. The display module of any one of claims 2-3, wherein, The first support layer comprises a gap and first flat regions located on both sides of the gap; The display module comprises a rotating shaft; The gap is interference-fitted with the rotating shaft.

7. The display module of any one of claims 2-3, wherein, The first support layer comprises a first patterned region and a first flat region, and the first patterned region comprises a first hollow hole; The second support layer comprises a second patterned region and a second flat region, and the second patterned region comprises a second hollow hole; The aspect ratio of the first hollow hole and the second hollow hole is independently selected from 0.95-1.

05.

8. The display module of claim 7, wherein, At least one of the first hollow hole and the second hollow hole is provided with a filling adhesive layer; The filling adhesive layer comprises an organic glass adhesive layer. 9.The display module of any one of claims 1-3, wherein, The glass layer is provided with any one or more of a weight-reducing hole and a weight-reducing groove.

10. The display module according to any one of claims 1-3, wherein The bending modulus of the support is 50 GPa-170 GPa; The density of the support is 2.0 g / cm 3 5.0 g / cm 3 .

11. The display module of any one of claims 2-3, wherein, The second support layer comprises any one or more of a stainless steel layer, a metal titanium layer, a titanium alloy layer, a carbon fiber reinforced composite material layer, and a plastic layer; The first support layer comprises a glass layer, and the glass layer comprises any one or more of a silicate glass layer, a borosilicate glass layer, an aluminosilicate glass layer, and a lead glass layer. 12.The display module of any one of claims 2-3, wherein, A connecting layer is arranged between the first support layer and the second support layer, and the connecting layer comprises any one or more of an epoxy resin layer, an acrylic resin layer, a polyurethane resin layer, and a phenolic resin layer.

13. A support member characterized by, The support comprises a patterned region and flat regions located on both sides of the patterned region; The patterned region can be deformed to unfold or fold the flat regions on both sides; The support comprises a first support layer and a second support layer arranged along a second direction; the second direction intersects the first direction; The first support layer and the second support layer are different; At least one of the first support layer and the second support layer comprises a glass layer.

14. A display device comprising: The display module or the support member of any one of claims 1-12 or 13.

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