Display module and display device

Abstract

The embodiment of the utility model provides a display module and a display device, relates to the technical field of display, and is used for achieving the purposes of firm bonding and uniform stress between a supporting piece and a bonding layer. The display module comprises a display panel and a supporting piece, the supporting piece comprises a supporting plate and a plurality of strip-shaped holes formed in the supporting plate in an array mode, the length direction of each strip-shaped hole in the strip-shaped holes is the first direction, and the width direction of each strip-shaped hole is the second direction; the plurality of strip-shaped holes are arranged into a plurality of rows along a second direction; the strip-shaped holes in the adjacent rows are arranged in a staggered mode in the second direction. The distance between the two strip-shaped holes which are in the adjacent rows and are adjacently arranged in the first direction in the first direction is a set hole distance E; the supporting piece is attached to the non-display side of the display panel through the bonding layer. The maximum single peak width H of the stripping force exists between the supporting piece and the bonding layer; wherein the value range of E is (H-3) mm to (H + 3) mm. The display module is used for displaying images.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular, to a display module and a display device. BACKGROUND

[0002] With the progress of flexible display technology, wearable display devices are gradually developed. The bendable and foldable display device is provided with a support piece with a patterned design, and the support piece is attached to the display panel through pressure-sensitive adhesive. The support piece provides support for the display panel while being bendable. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present disclosure aim to provide a display module and a display device for achieving the purpose of firm adhesion and uniform stress between the support piece and the adhesive layer.

[0004] To achieve the above-mentioned purpose, embodiments of the present disclosure provide the following technical solutions:

[0005] In one aspect, a display module is provided, comprising: a display panel, a support piece, and an adhesive layer, the display panel having a display side and a non-display side arranged opposite to each other; the support piece comprising: a support plate and a plurality of strip-shaped holes arranged in an array on the support plate, the length direction of each strip-shaped hole in the plurality of strip-shaped holes being a first direction, and the width direction of the strip-shaped hole being a second direction; the plurality of strip-shaped holes are arranged in multiple rows along the second direction; the strip-shaped holes of adjacent rows are arranged staggered in the second direction; two strip-shaped holes in adjacent rows and arranged adjacent in the first direction have a spacing in the first direction, which is a set hole spacing E; the support piece is attached to the non-display side of the display panel through the adhesive layer; there is a maximum value unimodal width H of peeling force between the support piece and the adhesive layer; wherein the value range of E is (H-3)mm~(H+3)mm.

[0006] In the above-mentioned display module, by adjusting the value range of E to be (H-3)mm~(H+3)mm, the purpose of the peeling force test curve of the support piece and the adhesive layer not having a maximum value unimodal width H can be achieved, i.e. the stress between the support piece and the adhesive layer is uniform without a large stress fluctuation between the support piece and the adhesive layer, thereby effectively solving the problem of large peeling force fluctuation between the support piece and the adhesive layer, so as to achieve the purpose of firm adhesion and uniform stress between the support piece and the adhesive layer.

[0007] In some embodiments, the support has an overall equivalent modulus M, M is in a range of 80 MPa to 120 MPa; and, M∝σC3 / (A-B-D)3; wherein, ∝ represents that the parameters on both sides are proportional; A represents the length of the strip-shaped hole; B represents the interval of the two adjacent strip-shaped holes in the same row in the first direction; C represents the interval of the strip-shaped holes of the adjacent rows in the second direction; D represents the width of the strip-shaped hole; and σ represents a material factor, which is a constant related to the material of the support and the material of the adhesive layer.

[0008] In some embodiments, the ratio of the value of A to the value of E is in a range of 3.2 to 4.8.

[0009] In some embodiments, the value of A is in a range of 48 mm to 72 mm; and / or, the value of E is in a range of 12 mm to 18 mm.

[0010] In some embodiments, the ratio of the value of B to the value of C is in a range of 1.6 to 2.4.

[0011] In some embodiments, the ratio of the value of B to the value of D is in a range of 1.6 to 2.4.

[0012] In some embodiments, the ratio of the value of C to the value of D is in a range of 0.8 to 1.2.

[0013] In some embodiments, the value of B is in a range of 0.8 mm to 1.2 mm.

[0014] In some embodiments, the value of C is in a range of 0.4 mm to 0.6 mm.

[0015] In some embodiments, the value of D is in a range of 0.4 mm to 0.6 mm.

[0016] In some embodiments, in the multiple rows formed by the multiple strip-shaped holes, the strip-shaped holes in two rows spaced one row apart are arranged in overlapping manner in the second direction.

[0017] In some embodiments, the support and the adhesive layer have a maximum peeling force, a minimum peeling force, and an average value of the interval peeling force; the difference between the maximum peeling force and the minimum peeling force is less than or equal to 20% of the ratio of the average value of the interval peeling force.

[0018] In some embodiments, the material of the adhesive layer comprises at least one of pressure-sensitive glue and optical glue.

[0019] In some embodiments, the material of the support plate comprises at least one of stainless steel, aluminum, aluminum alloy, zirconium alloy, aluminum-magnesium alloy, and titanium alloy.

[0020] In another aspect, a display device is provided. The display device comprises the display module as described in any of the above embodiments, and further comprises a circuit board configured to drive the display module to display.

[0021] The display device has the same structure and beneficial technical effects as the display module provided in some of the above embodiments, and will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present disclosure, the drawings needed to be used in some embodiments of the present disclosure will be briefly introduced as follows. Obviously, the drawings described below are only some of the drawings of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limited to the actual size, actual process, etc. of the product involved in the embodiments of the present disclosure.

[0023] Figure 1 FIG. 1 is a structural diagram of a display device according to some embodiments of the present disclosure;

[0024] Figure 2 FIG. 2 is a cross-sectional view of a display module in the display device shown in FIG. 1 along the cross-sectional line GG; Figure 1

[0025] Figure 3 FIG. 3 is a structural diagram of a support according to some embodiments of the present disclosure;

[0026] Figure 4 FIG. 4 is a peeling force test diagram of a support and an adhesive layer according to some embodiments of the present disclosure;

[0027] Figure 5 FIG. 5 is a mechanical simulation diagram of a support according to Embodiment 5 of the present disclosure. DETAILED DESCRIPTION

[0028] The technical solutions in some embodiments of the present disclosure will be described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided in the present disclosure, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present disclosure.

[0029] ​Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an open, inclusive sense as "including, but not limited to." As used throughout the description and the claims, the term "one embodiment," "some embodiments," "an exemplary embodiment," "example," "specific example," or "some examples" means that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the disclosure, but not necessarily all embodiments or examples. The above-mentioned terms do not necessarily refer to the same embodiment or example. Furthermore, the described features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0030] Hereinafter, the terms "first", "second", etc. are used only for the purpose of description, and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the disclosure, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0031] In describing some embodiments, "coupled" and "connected", and variations thereof, can be used. The term "connected" should be interpreted broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrated; can be directly connected, or indirectly connected through an intermediate medium. The term "coupled" indicates, for example, that two or more components have direct physical contact or electrical contact. The term "coupled" or "communicatively coupled" can also mean that two or more components do not have direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content herein.

[0032] "A, B, and C at least one of" has the same meaning as "at least one of A, B, or C", and includes the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0033] "A and / or B" includes the following three combinations: only A, only B, and a combination of A and B.

[0034] As used herein, "about," "approximately," or "around" includes the recited value and the average value within an acceptable range of deviation from the particular value, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system).

[0035] As used herein, "parallel," "perpendicular," "equal" includes the recited condition and conditions that approximate the recited condition, the approximation being within an acceptable range of deviation, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and near parallel, where near parallel can have an acceptable range of deviation, for example, within 5°; "perpendicular" includes absolute perpendicular and near perpendicular, where near perpendicular can also have an acceptable range of deviation, for example, within 5°. "Equal" includes absolute equality and near equality, where near equality can have an acceptable range of deviation, for example, a difference between the two that is less than or equal to 5% of either.

[0036] It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers can also be present.

[0037] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are idealized examples of exemplary embodiments. In the drawings, the thickness of layers and regions are exaggerated for clarity. Accordingly, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region illustrated as a rectangle will typically have rounded or curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region of a device and are not intended to limit the scope of the exemplary embodiments.

[0038] As used herein Figure 1As shown, some embodiments of the present disclosure provide a display device 1000, which can be any device that displays whether it is in motion (e.g., video) or stationary (e.g., still images) and whether it is in text or graphic form. More specifically, it is contemplated that the embodiments can be implemented in or in association with a variety of electronic devices such as, but not limited to, mobile telephones (e.g., cell phones), wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, auto displays (e.g., odometer display, etc.), cockpit controls and / or displays, camera view displays (e.g., display of a rear view camera in a vehicle), electronic photographs, electronic billboards or signs, projections, architectural structures, packaging, and aesthetic structures (e.g., display of images on a piece of jewelry), and the like.

[0039] Figure 1 As shown, the display device 1000 is taken as an example of a flexible display device including a rollable structure.

[0040] Exemplarily, the display device 1000 can be an electroluminescent display device or a photoluminescent display device. In the case that the display device 1000 is an electroluminescent display device, the electroluminescent display device can be an organic electroluminescent display device (OLED) or a quantum dot electroluminescent display device (QLED). In the case that the display device 1000 is a photoluminescent display device, the photoluminescent display device can be a quantum dot photoluminescent display device. Hereinafter, some embodiments of the present disclosure are illustratively described by taking the display device 1000 as an OLED display device, but the embodiments of the present disclosure include but are not limited to this, and any other display device can also be considered as long as the same technical idea is applied.

[0041] With the development of electronic devices towards thinness and portability, flexible OLED display screens have attracted widespread attention due to their bendable and foldable characteristics.

[0042] Please continue to refer to Figure 1 The display device 1000 described above includes a display module 100. The display module 100 includes a flexible display panel 10 and a support member 20.

[0043] Exemplarily, as Figure 1 As shown, the display panel 10 has a display side F1 and a non-display side F2, and the support member 20 is located at the non-display side F2 of the display panel 10.

[0044] As shown in Figure 1 The display device 1000 further includes a reel 30, one end of the display panel 10 and the support 20 are fixed to the reel 30, and the display panel 10 and the support 20 can be wound onto the reel 30.

[0045] In some examples, Figure 2 To meet the requirements of Figure 1 A cross-sectional view of the display module 100 in the display device 1000 shown in FIG. 1 along a cross-sectional line GG, the display module 100 includes the support 20, the adhesive layer 40, the display panel 10, the polarizer 50, and the cover plate 60 arranged in layers. The support 20 is attached to the non-display side F2 of the display panel 10 through the adhesive layer 40.

[0046] As shown in

[0047] As shown in

[0048] In some embodiments, as shown in Figure 1 and Figure 3 The bendable and foldable display device 1000 has a patterned support 20 that provides support to the display panel 10 while being bendable and foldable.

[0049] However, due to the large fluctuation of the peeling force between the support 20 and the adhesive layer 40, the reliability of the roll-up is affected. Therefore, the support 20 and the adhesive layer 40 need to be firmly bonded and uniformly stressed to meet the requirements.

[0050] Based on this, as shown in Figure 2 and Figure 3 The display module 100 includes the support 20, the adhesive layer 40, and the display panel 10, and the support 20 is attached to the non-display side F2 of the display panel 10 through the adhesive layer 40.

[0051] The support 20 includes a support plate 21 and a plurality of strip-shaped holes 22 arranged in an array on the support plate 21, the length direction of each strip-shaped hole 22 in the plurality of strip-shaped holes 22 is a first direction X, and the width direction of the strip-shaped hole 22 is a second direction Y; the plurality of strip-shaped holes 22 are arranged in multiple rows along the second direction Y; and the strip-shaped holes 22 of adjacent rows are arranged in an interlaced manner in the second direction Y.

[0052] As shown in Figure 3As shown, the multiple rows of the plurality of strip holes 22 arranged along the second direction Y include a first row J1, a second row J2 and a third row J3 arranged in sequence, the first row J1 and the second row J2 are adjacent rows, and the strip hole 221 of the first row J1 and the strip hole 222 of the second row J2 only partially overlap in the second direction Y; the second row J2 and the third row J3 are adjacent rows, and the strip hole 222 of the second row J2 and the strip hole 223 of the third row J3 only partially overlap in the second direction Y.

[0053] In some embodiments, as shown in Figure 3 and Figure 4 As shown, the parameters of the length A of the strip hole 22, the spacing B of the two adjacent strip holes 22 in the same row in the first direction X, the spacing C of the strip holes 22 of adjacent rows in the second direction Y, the width D of the strip hole 22, the set hole spacing E, and the maximum single-peak width H of the peeling force are set to achieve the purpose of firm bonding and uniform stress between the support 20 and the adhesive layer 40.

[0054] For example, the shape of the strip hole 22 is a rounded long strip shape, the length A of the strip hole 22 is the maximum length of the strip hole 22, the spacing B of the two adjacent strip holes 22 in the same row in the first direction X is the minimum spacing of the two adjacent strip holes 22 in the same row in the first direction X, and the width D of the strip hole 22 is the maximum width of the strip hole 22.

[0055] In other examples, the shape of the strip hole 22 is a right-angled long strip shape, which is not limited here.

[0056] The following examples introduce the set hole spacing E and the maximum single-peak width H of the peeling force.

[0057] In some examples, as shown in Figure 3 The spacing of the two strip holes 22 in the adjacent rows and adjacent in the first direction X is the set hole spacing E.

[0058] For example, the strip hole 221 of the first row J1 and the strip hole 224 of the second row J2 are the two strip holes 22 in the adjacent rows and adjacent in the first direction X, and the spacing of the strip hole 221 and the strip hole 224 in the first direction X is the set hole spacing E.

[0059] In some examples, Figure 4 The peeling force test graph of the support 20 and the adhesive layer 40 according to some embodiments of the present disclosure, for example, the peeling force test graph of the support 20 and the adhesive layer 40 can be obtained by testing the peeling force of the support 20 and the adhesive layer 40 through a stretching device. Wherein, the abscissa represents the distance, unit: mm; the ordinate represents the peeling force, unit: gram force / inch, which can also be expressed as gf / inch, gf represents gram force, and inch represents inch.Figure 4 The example shows peel force test curves for multiple support members 20 and adhesive layers 40.

[0060] like Figures 2-4 As shown, there is a single peak width H of the maximum peel force between the support member 20 and the adhesive layer 40. The maximum single peak width H of the peel force between the support member 20 and the adhesive layer 40 can be obtained by using a tensile testing device to test the peel force between the support member 20 and the adhesive layer 40.

[0061] For example, the maximum single-peak width H of the peel force is a parameter caused by the strong adhesion between the area on the support plate 21 other than the multiple strip holes 22 and the adhesive layer 40, resulting in large fluctuations in the peel force. This fluctuation in peel force causes uneven stress between the support member 20 and the adhesive layer 40.

[0062] In some examples, such as Figures 2-4 As shown, the value of E ranges from (H-3)mm to (H+3)mm.

[0063] For example, the hole spacing E can be set to values ​​such as (H-3)mm, (H-2)mm, (H-1)mm, Hmm, (H+1)mm, (H+2)mm, or (H+3)mm, etc., without any limitation.

[0064] For example, the maximum single-peak width H of the peel force between the support member 20 and the adhesive layer 40 obtained by using a tensile testing device is 12mm, and then the setting hole spacing E is set to 12mm±3mm.

[0065] By setting the value of E to a range of (H-3)mm to (H+3)mm, the peel force test curves of the support member 20 and the adhesive layer 40 can be made to have no maximum single peak width H, that is, there is no problem of large fluctuation in peel force, so as to achieve the purpose of uniform force between the support member 20 and the adhesive layer 40.

[0066] Furthermore, in some examples, such as Figure 2 and Figure 3 As shown, in order to achieve a firm bond between the support member 20 and the adhesive layer 40, the support member 20 has an overall equivalent modulus M, and the value of M ranges from 80MPa to 120MPa.

[0067] Furthermore, M∝σC3 / (ABD)3; where ∝ indicates that the parameters on both sides are proportional; A represents the length of the strip hole 22; B represents the spacing between two adjacent strip holes 22 in the same row in the first direction X; C represents the spacing between strip holes 22 in adjacent rows in the second direction Y; D represents the width of the strip hole 22; σ represents the material factor, which is a constant related to the material of the support 20 and the adhesive layer 40.

[0068] In this context, the concept of general modulus is material-related and independent of thickness. In the embodiments of this disclosure, the support member 20 includes a support plate 21 and a plurality of strip holes 22 arrayed on the support plate 21. Therefore, the support member 20 is a patterned support member 20, and the overall equivalent modulus represents the parameters related to the material and the patterning of the support member 20. That is to say, the hardness of the support member 20 is not only related to the material but also to the patterned structure.

[0069] For example, the overall equivalent modulus of support 20 is tested using a tensile testing device.

[0070] For example, the material of the support plate 21 includes at least one of stainless steel, aluminum, aluminum alloy, zirconium alloy, aluminum-magnesium alloy and titanium alloy.

[0071] For example, the material of the adhesive layer 40 includes at least one of pressure-sensitive adhesive (PSA) and optically clear adhesive (OCA).

[0072] For example, the overall equivalent modulus M can be 80MPa, 90MPa, 100MPa, 110MPa or 120MPa, etc., and there is no limitation here.

[0073] By setting the overall equivalent modulus M to a range of 80MPa to 120MPa, the reliability requirements of the support component 20 can be met.

[0074] In some examples, such as Figure 3 As shown, the value of the overall equivalent modulus M can be adjusted by setting the length A of the strip hole 22, the spacing B between two adjacent strip holes 22 in the same row in the first direction X, the spacing C between strip holes 22 in adjacent rows in the second direction Y, and the width D of the strip hole 22.

[0075] For example, the ratio of the value of A to the value of E ranges from 3.2 to 4.8. For instance, the ratio of the length A of the strip hole 22 to the set hole distance E is 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, or 4.8, etc., and there is no limitation here.

[0076] For example, the value of A ranges from 48mm to 72mm. For instance, the length A of the strip hole 22 can be 48mm, 52mm, 55mm, 60mm, 62mm, 65mm, 68mm, 70mm, or 72mm, etc. There is no limit here.

[0077] For example, the value range of E is 12mm-18mm, and the value of E is set to 12mm, 13mm, 14mm, 15mm, 16mm, 17mm or 18mm, etc., which is not limited herein.

[0078] For example, the ratio of the value of B to the value of C is 1.6-2.4, for example, the ratio of the value of the interval B of the adjacent two strip holes 22 in the same row in the first direction X to the value of the interval C of the strip holes 22 in the adjacent row in the second direction Y is 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3 or 2.4, etc., which is not limited herein.

[0079] For example, the ratio of the value of B to the value of D is 1.6-2.4, for example, the ratio of the value of the interval B of the adjacent two strip holes 22 in the same row in the first direction X to the value of the width D of the strip holes 22 is 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3 or 2.4, etc., which is not limited herein.

[0080] For example, the ratio of the value of C to the value of D is 0.8-1.2, for example, the ratio of the value of the interval C of the strip holes 22 in the adjacent row in the second direction Y to the value of the width D of the strip holes 22 is 0.8, 0.9, 1, 1.1 or 1.2, etc., which is not limited herein.

[0081] For example, the value range of B is 0.8mm-1.2mm, for example, the value of the interval B of the adjacent two strip holes 22 in the same row in the first direction X is 0.8mm, 0.9mm, 1mm, 1.1mm or 1.2mm, etc., which is not limited herein.

[0082] For example, the value range of C is 0.4mm-0.6mm, for example, the value of the interval C of the strip holes 22 in the adjacent row in the second direction Y is 0.4mm, 0.5mm or 0.6mm, etc., which is not limited herein.

[0083] For example, the value range of D is 0.4mm-0.6mm, for example, the value of the width D of the strip holes 22 is 0.4mm, 0.5mm or 0.6mm, etc., which is not limited herein.

[0084] For example, the value of the interval C of the strip holes 22 in the adjacent row in the second direction Y and the value of the width D of the strip holes 22 can be approximately equal.

[0085] By setting the values of A, B, C, D and E as described above, the value range of the overall equivalent modulus M can be adjusted to 80 MPa-120 MPa, the reliability requirement of the support 20 can be met, and the purpose of firm adhesion and uniform stress between the support 20 and the adhesive layer 40 can be achieved.

[0086] In some embodiments, as shown in FIG. 2, in the multiple rows formed by the multiple strip-shaped holes 22, the strip-shaped holes 22 in two rows spaced by one row are arranged to overlap in the second direction Y. Figure 3

[0087] For example, as shown in FIG. 2, the strip-shaped holes 221 of the first row J1 and the strip-shaped holes 223 of the third row J3 are located in two rows spaced by one row, and the strip-shaped holes 221 and the strip-shaped holes 223 are arranged to overlap in the second direction Y. Figure 3

[0088] By arranging the strip-shaped holes 22 in two rows spaced by one row to overlap in the second direction Y and arranging the strip-shaped holes 22 of adjacent rows to stagger in the second direction Y in the multiple rows formed by the multiple strip-shaped holes 22, the multiple strip-shaped holes 22 arranged in an array are formed.

[0089] In some embodiments, as shown in FIG. 2, there are a maximum peeling force K1, a minimum peeling force K2 and an average peeling force K3 between the support 20 and the adhesive layer 40; the ratio of the difference between the maximum peeling force K1 and the minimum peeling force K2 to the average peeling force K3 is less than or equal to 20%, i.e., (K1-K2) / K3≤20%. Figure 2

[0090] For example, the peeling force of the support 20 and the adhesive layer 40 is tested by using a tensile device, and the maximum peeling force K1, the minimum peeling force K2 and the average peeling force K3 between the support 20 and the adhesive layer 40 can be obtained.

[0091] For example, the value of (K1-K2) / K3 is 20%, 18%, 15%, 13%, 12%, 10%, 5%, 3%, 2%, 1% or 0, etc., which is not limited here.

[0092] By setting (K1-K2) / K3≤20%, the average peeling force K3 can be improved to improve the firm adhesion between the support 20 and the adhesive layer 40.

[0093] According to the above, the following embodiments 1-6 are provided, and the parameter settings of embodiments 1-6 are shown in Table 1.

[0094] Table 1 Parameter settings of embodiments 1-6

[0095] Parameter Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 A / mm 60 60 60 30 60 60 B / mm 1 1 1 1 2 1 C / mm 0.5 0.5 0.5 0.5 0.5 1 D / mm 0.5 0.5 0.5 0.5 0.5 1 E / mm 32 15 27 32 31 32 K1 / gf / inch 812 612 780 563 871 821 K2 / gf / inch 376 523 366 491 357 392 K3 / gf / inch 412 562 426 521 427 393 H / mm 12 None 12 12 16 12 M / MPa 100 100 100 500 260 82 ​​​

[0096] wherein, as shown in Figure 3 and Figure 4 A represents the length of the strip hole 22, B represents the pitch of the two adjacent strip holes 22 in the same row in the first direction X, C represents the pitch of the strip holes 22 of the adjacent rows in the second direction Y, D represents the width of the strip hole 22, E represents the set hole pitch, H represents the single peak width of the maximum peeling force between the support 20 and the adhesive layer 40, K1 represents the maximum peeling force between the support 20 and the adhesive layer 40, K2 represents the minimum peeling force between the support 20 and the adhesive layer 40, K3 represents the average value of the interval peeling force between the support 20 and the adhesive layer 40, and M represents the overall equivalent modulus.

[0097] In Example 1, the overall equivalent modulus M = 100 MPa, which can meet the reliability requirements of the support 20. However, the maximum peeling force K1 and the minimum peeling force K2 have a large difference, and the interval average peeling force K3 is 412 gf / inch. The interval average peeling force K3 is small, and the adhesion between the support 20 and the adhesive layer 40 is poor.

[0098] In Example 2, during the design of the support 20, the set hole pitch E is introduced to have a value range of (H-3) mm to (H+3) mm. By adjusting the set hole pitch E, compared with Example 1, the fluctuation between the maximum peeling force K1 and the minimum peeling force K2 is reduced by 80%. Moreover, the interval peeling force average K3 is increased by 36%, effectively improving the adhesion between the support 20 and the adhesive layer 40. Furthermore, compared with Example 1, the values of A, B, C and D of Example 2 do not change, and the overall equivalent modulus M = 100 MPa of Example 2 can meet the reliability requirements of the support 20.

[0099] In Example 3, the set hole pitch E is 27 mm, and the single peak width H of the maximum peeling force between the support 20 and the adhesive layer 40 is 12 mm, i.e. E = 27 mm and H = 12 mm, and the value of E is not within the range of (H±3) mm. At this time, the set hole pitch E is about equal to 1.5 times (H+3) mm. In this example, it can be seen that the interval peeling force average K3 is 426 gf / inch, which is significantly lower than the interval peeling force average K3 = 562 gf / inch of Example 2.

[0100] In Example 4, the length A of the strip hole 22 is 30 mm. Compared with Example 1, the length A of the strip hole 22 in Example 4 is reduced by 50%, that is, the number of strip holes 22 on the support plate 21 is increased. At this time, compared with Example 1, the average value of the interval peel force K3 increases by 26.4%, but the overall equivalent modulus M increases by 5 times. That is, in Example 4, the overall equivalent modulus M is 500 MPa, which cannot meet the reliability requirements of the support member 20.

[0101] In Example 5, the spacing B between two adjacent strip holes 22 in the same row in the first direction X is 2 mm, and the maximum peel force K1 is 871 gf / inch. Compared with Example 1, B is increased by 1 times, the maximum peel force K1 is increased by 7%, and the average peel force K3 of the interval is increased by less than 4%, indicating a significantly worse improvement effect than Example 2. Moreover, the overall equivalent modulus of Example 5 is increased to 260 MPa. Figure 5 The diagram shows the mechanical simulation of the support member 20 according to Embodiment 5 of this disclosure. The blue to red barcodes on the left represent horizontal force gauges; different colors indicate different forces. Figure 5 As can be seen, there is a significant difference in color within the support member 20, indicating uneven horizontal stress. Therefore, increasing the spacing B between two adjacent strip holes 22 in the same row in the first direction X will lead to uneven horizontal stress on the support member 20, which is detrimental to the uniformity of stress between the support member 20 and the adhesive layer 40.

[0102] In Example 6, the spacing C of the strip holes 22 in the second direction Y is 1 mm, and the width D of the strip holes 22 is 1 mm. Compared with Example 1, the maximum peeling force K1 increases, but the difference between the maximum peeling force K1 and the minimum peeling force K2 is large, and the average value of the interval peeling force K3 decreases.

[0103] As can be seen from the above embodiments, this disclosure can achieve the reliability requirements of the support member 20 and the purpose of achieving a firm bond and uniform stress between the support member 20 and the adhesive layer 40 by setting the maximum single peak width H of the peel force and the hole spacing E, as well as setting A, B, C and D.

[0104] like Figure 1 As shown, embodiments of this disclosure also provide a display device 1000 including the display module 100 provided in any of the above embodiments, and the display device 1000 further includes a circuit board.

[0105] Exemplarily, the display module 100 is connected with a circuit board. The circuit board can be a rigid printed circuit board (English full name: Printed Circuit Board, for short PCB), a flexible printed circuit board (English full name: Flexible Printed Circuit board, for short FPC) or a rigid-flexible combined board. The circuit board is coupled with the display module 100 and is configured to transmit electrical signals to the display module 100.

[0106] As shown in Figure 1 The display device 1000 provided by the present disclosure includes the display module 100 provided by any one of the above embodiments. Therefore, the display device 1000 provided by the present disclosure has all the beneficial effects of the display module 100 provided by any one of the above embodiments, which will not be repeated here.

[0107] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can think of changes or replacements within the technical scope disclosed by the present disclosure, which should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A display module, characterized by The display module comprises: a display panel having a display side and a non-display side arranged oppositely; a support piece comprising a support plate and a plurality of strip-shaped holes arranged on the support plate, each of the strip-shaped holes has a length direction as a first direction and a width direction as a second direction, the plurality of strip-shaped holes are arranged into a plurality of rows along the second direction, the strip-shaped holes of adjacent rows are arranged staggeredly in the second direction, and the pitch of two strip-shaped holes arranged adjacently in the first direction in adjacent rows is a set hole pitch E; an adhesive layer, the support piece is attached to the non-display side of the display panel through the adhesive layer, and a maximum value single-peak width H of a peeling force exists between the support piece and the adhesive layer; wherein the value range of E is (H-3) mm to (H+3) mm.

2. The display module of claim 1, wherein, The support piece has an overall equivalent modulus M, the value range of M is 80 MPa to 120 MPa, and M∝σC³ / (A-B-D)³; wherein ∝ represents that the parameters on both sides are proportional; A represents the length of the strip-shaped hole; B represents the pitch of two adjacent strip-shaped holes in the first direction in the same row; C represents the pitch of the strip-shaped holes of adjacent rows in the second direction; D represents the width of the strip-shaped hole; σ represents a material factor, which is a constant related to the material of the support piece and the material of the adhesive layer.

3. The display module of claim 2, wherein, The ratio of the value of A to the value of E ranges from 3.2 to 4.

8.

4. The display module of claim 3, wherein, The value range of A is 48 mm to 72 mm, and / or the value range of E is 12 mm to 18 mm.

5. The display module of claim 2, wherein, The ratio of the value of B to the value of C ranges from 1.6 to 2.

4.

6. The display module of claim 2, wherein, The ratio of the value of B to the value of D ranges from 1.6 to 2.

4.

7. The display module of claim 2, wherein, The ratio of the value of C to the value of D ranges from 0.8 to 1.

2.

8. The display module of claim 2, wherein, The value range of B is 0.8 mm to 1.2 mm.

9. The display module of claim 2, wherein, The value range of C is 0.4 mm to 0.6 mm.

10. The display module of claim 2, wherein, The value range of D is 0.4 mm to 0.6 mm.

11. The display module of claim 1, wherein, In the plurality of rows formed by the plurality of strip-shaped holes, the strip-shaped holes in two rows spaced one row apart are arranged overlappingly in the second direction.

12. The display module of claim 1, wherein, A maximum peeling force, a minimum peeling force and an average value of interval peeling forces exist between the support piece and the adhesive layer. The ratio of the difference between the maximum peeling force and the minimum peeling force to the average value of the interval peeling forces is less than or equal to 20%.

13. The display module of claim 1, wherein, The material of the adhesive layer comprises at least one of pressure-sensitive glue and optical glue. 14.The display module of any one of claims 1-13, wherein, The material of the support plate comprises at least one of stainless steel, aluminum, aluminum alloy, zirconium alloy, aluminum-magnesium alloy and titanium alloy.

15. A display device comprising: The display module comprises: The display module according to any one of claims 1 to 14; a circuit board for driving the display module to display.

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