Display device

Abstract

A display device is provided. The display device comprises: a display panel including first and second surfaces facing each other; an elastic member disposed on the first surface; a first rigid member disposed on the elastic member; and a panel support member disposed on the second surface, wherein the first rigid member includes at least one from among polyethyleneterephthalate (PET), polyimide, and ultra-thin glass (UTG), and the elastic member includes at least one from among a dilatant, polyether block amide (PEBA), and thermoplastic polyurethane (TPU).

Description

display device

[0001] The present invention relates to a display device.

[0002] As the information society develops, the demand for display devices for displaying images is increasing in various forms. For example, display devices are being used in various electronic devices such as smartphones, digital cameras, laptop computers, navigation systems, and smart televisions.

[0003] In order to increase the portability of display devices while providing a wide display screen, flexible displays such as bendable, foldable, slidable, and rollable displays with display areas that can be bent or folded are being released.

[0004] These flexible displays should be flexible enough to easily transform their shape, while also being highly resistant to external impacts. This is particularly true for products with their display surfaces facing outward, which are more likely to be exposed to external impacts. Therefore, they require both flexibility and high impact resistance.

[0005] The problem that the present invention seeks to solve is to provide a display device having high shock resistance against various types of external shocks.

[0006] The tasks of the present invention are not limited to the tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0007] According to one embodiment of the present invention for solving the above problem, a display device includes a display panel including first and second surfaces facing each other, an elastic member disposed on the first surface, a first rigid member disposed on the elastic member, and a panel support member disposed on the second surface, wherein the first rigid member includes at least one of polyethylene terephthalate (PET), polyimide, and ultra-thin film glass (UTG), and the elastic member includes at least one of a dilatant, polyether block amide (PEBA), and thermoplastic polyurethane (TPU).

[0008] It further includes a second rigid member disposed between the elastic member and the display panel, and the second rigid member may include at least one of polyethylene terephthalate (PET) and polyimide.

[0009] The device further includes a third rigid member disposed between the second rigid member and the display panel, wherein the third rigid member may include ultra-thin glass (UTG).

[0010] The modulus value of the third rigid member may be greater than the modulus values ​​of each of the first rigid member and the second rigid member.

[0011] The thickness of the third rigid member may be greater than the thickness of the first rigid member, and the thickness of the first rigid member may be greater than the thickness of the second rigid member.

[0012] The third rigid member and the display panel can be joined to each other by an adhesive member.

[0013] It further includes a fourth rigid member disposed between the display panel and the panel support member, wherein the fourth rigid member may include at least one of polyethylene terephthalate (PET) and polyimide.

[0014] It further includes at least one of a first adhesive member disposed between the display panel and the elastic member, and a second adhesive member disposed between the elastic member and the first rigid member, and at least one of the first adhesive member and the second adhesive member may include a dilatant.

[0015] According to another embodiment for solving the above problem, a display device includes a display panel including first and second surfaces facing each other, an elastic member disposed on the first surface, a first rigid member disposed on the elastic member, a panel support member disposed on the second surface, a second rigid member disposed between the elastic member and the display panel, at least one upper adhesive member disposed between any two layers of the display panel, the elastic member, the first rigid member, and the second rigid member, and at least one lower adhesive member disposed between the display panel and the panel support member, wherein a thickness of the at least one upper adhesive member is thicker than a thickness of the at least one lower adhesive member.

[0016] The thickness of the at least one upper adhesive member may be two to five times the thickness of the at least one lower adhesive member.

[0017] The upper adhesive member further includes a first adhesive member disposed between the display panel and the second rigid member, and a second adhesive member disposed between the second rigid member and the elastic member, wherein a width of the second adhesive member may be smaller than a width of the first adhesive member.

[0018] The adhesive strength of the second adhesive member may be lower than the adhesive strength of the first adhesive member.

[0019] It further includes a third rigid member disposed between the second rigid member and the display panel, and the upper adhesive member includes a first adhesive member disposed between the display panel and the third rigid member, and a second adhesive member disposed between the second rigid member and the third rigid member, and the width of the second adhesive member may be smaller than the width of the first adhesive member.

[0020] The third rigid member may include ultra-thin glass (UTG).

[0021] It further includes a fourth rigid member disposed between the display panel and the panel support member, wherein the fourth rigid member may include at least one of polyethylene terephthalate (PET) and polyimide.

[0022] According to another embodiment for solving the above problem, a display device includes a display panel including first and second surfaces facing each other, an elastic member disposed on the first surface, a first rigid member disposed on the elastic member, and a panel support member disposed on the second surface, wherein a modulus value of the first rigid member is greater than a modulus value of the elastic member.

[0023] The modulus value of the elastic member at room temperature may be less than 1 gigapascal (Gpa).

[0024] The modulus value of the first rigid member at room temperature may be 10 Gpa to 15 heme.

[0025] The first rigid member may include at least one of polyethylene terephthalate (PET), polyimide, and ultra-thin glass (UTG).

[0026] The above elastic member may include a dilatant.

[0027] The elastic member may include at least one of polyether block amide (PEBA) and thermoplastic polyurethane (TPU).

[0028] It further includes a second rigid member disposed between the elastic member and the display panel, and the second rigid member may include at least one of polyethylene terephthalate (PET) and polyimide.

[0029] The device further includes a third rigid member disposed between the elastic member and the display panel, wherein the third rigid member may include ultra-thin glass (UTG).

[0030] It further includes a fourth rigid member disposed between the display panel and the panel support member, wherein the fourth rigid member may include at least one of polyethylene terephthalate (PET) and polyimide.

[0031] The above first side may be a display side that displays an image.

[0032] According to one embodiment of the present invention, a display device can have high impact resistance against various types of external impacts.

[0033] The effects according to the embodiments are not limited to those exemplified above, and more diverse effects are included in this specification.

[0034] Figure 1 is a perspective view showing a display device in an unfolded state according to one embodiment.

[0035] FIG. 2 is a perspective view showing a folded state of a display device according to one embodiment.

[0036] Fig. 3 is a perspective view showing a display device in an unfolded state according to another embodiment.

[0037] Fig. 4 is a perspective view showing a folded state of a display device according to another embodiment.

[0038] FIG. 5 is a cross-sectional view showing an example of a display panel according to one embodiment.

[0039] Figure 6 is an exploded perspective view showing a display device according to one embodiment.

[0040] Figure 7 is a cross-sectional view taken along line X1-X1' of Figure 6.

[0041] Fig. 8 is a cross-sectional view showing a portion of a display device according to one embodiment.

[0042] Figure 9 is a graph comparing the modulus values ​​of various materials according to temperature.

[0043] Fig. 10 is a cross-sectional view showing a state in which an impact is applied by a first object to a display device according to a first comparative example.

[0044] Fig. 11 is a cross-sectional view showing a state in which an impact is applied to a display device according to the first comparative example by a second object.

[0045] Fig. 12 is a cross-sectional view showing a state in which an impact is applied by a second object to a display device according to a second comparative example.

[0046] Fig. 13 is a cross-sectional view showing a state in which an impact is applied by a first object to a display device according to one embodiment.

[0047] FIG. 14 and FIG. 15 are cross-sectional views showing a state in which an impact is applied to a display device according to one embodiment by a second object.

[0048] Fig. 16 is a cross-sectional view showing the particle distribution of an elastic member according to one embodiment in a state without external impact.

[0049] Fig. 17 is a cross-sectional view showing the particle distribution of an elastic member according to one embodiment when an external impact is applied.

[0050] Fig. 18 is a cross-sectional view showing a display device according to another embodiment.

[0051] Fig. 19 is a cross-sectional view showing a part of a display device according to another embodiment.

[0052] Fig. 20 is a cross-sectional view showing a display device according to another embodiment.

[0053] Fig. 21 is a cross-sectional view showing a portion of a display device according to another embodiment.

[0054] Fig. 22 is a cross-sectional view showing a display device according to another embodiment.

[0055] Fig. 23 is a cross-sectional view showing a display device according to another embodiment.

[0056] Fig. 24 is a cross-sectional view showing a display device according to another embodiment.

[0057] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined solely by the scope of the claims.

[0058] When elements or layers are referred to as being "on" another element or layer, this includes both cases where the other element or layer is directly above the other element or layer or where there is another layer or material intervening therebetween. Similarly, references to "below," "left," and "right" include both cases where the other element or layer is directly adjacent to the other element or where there is another layer or material intervening therebetween. Like reference numerals throughout the specification refer to like elements.

[0059] Although terms like "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it should be understood that a "first" component referred to below may also be a "second" component within the technical scope of the present invention.

[0060] The features of each of the various embodiments of the present invention can be partially or wholly combined or combined with each other, and various technical connections and operations are possible, and each embodiment can be implemented independently of each other or implemented together in a related relationship.

[0061] Specific embodiments are described below with reference to the attached drawings.

[0062] Fig. 1 is a perspective view showing a display device in an unfolded state according to one embodiment. Fig. 2 is a perspective view showing a display device in a folded state according to one embodiment.

[0063] Referring to FIGS. 1 and 2, FIG. 1 shows a first state of the display device (10) that is unfolded without being bent at the folding lines (FL1, FL2), and FIG. 2 shows a second state of the display device (10) that is bent at the folding lines (FL1, FL2).

[0064] A display device (10) according to one embodiment is a device that displays a moving image or a still image, and can be used as a display screen for various products such as a mobile phone, a smart phone, a tablet personal computer (PC), a smart watch, a watch phone, a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation system, an Ultra Mobile PC (UMPC), etc., as well as a television, a laptop, a monitor, a billboard, an Internet of Things (IOT), etc.

[0065] In some embodiments, the display device (10) may be a flexible display, such as a bendable, foldable, slidable, or rollable display. In this case, at least a portion of the display device (10) may change shape, such as by bending, folding, sliding, or rolling. Hereinafter, for convenience of explanation, a folding display will be described as an example, but the present invention is not limited thereto.

[0066] In FIGS. 1 and 2, the first direction (DR1) may be a direction parallel to one side of the display device (10) when viewed in a plan view, for example, a horizontal direction of the display device (10). The second direction (DR2) may be a direction parallel to the other side that touches one side of the display device (10) when viewed in a plan view, and may be a vertical direction of the display device (10). The third direction (DR3) may be a thickness direction of the display device (10).

[0067] The flat shape of the display device (10) may have a rectangular shape, such as a rectangle. Each corner of the display device (10) may have a right-angled flat shape or a rounded flat shape. The front surface of the display device (10) may include two short sides arranged in a first direction (DR1) and two long sides arranged in a second direction (DR2).

[0068] The display device (10) may include a display area (DA) and a non-display area (NDA). The planar shape of the display area (DA) may follow the shape of the display device (10). For example, if the planar shape of the display device (10) is rectangular, the planar shape of the display area (DA) may also be rectangular.

[0069] The display area (DA) may be an area that displays an image, including a plurality of pixels. The non-display area (NDA) may be an area that does not display an image because it does not include pixels. The non-display area (NDA) may be arranged around the display area (DA). The non-display area (NDA) may be arranged to surround the display area (DA), but the embodiments of the present specification are not limited thereto. In another embodiment, the display area (DA) may be partially surrounded by the non-display area (NDA).

[0070] The display device (10) can maintain both a first state, which is an unfolded state, and a second state, which is a bent state. The display device (10) can be folded in an out-folding manner so that the display area (DA) faces outward, as shown in FIG. 2. In this case, the back surfaces of the display devices (10) can face each other when folded. In another embodiment, the display device (10) can be folded in an in-folding manner so that the display area (DA) faces inward. In this case, the front surfaces of the display devices (10) can face each other when folded.

[0071] The display device (10) may include a folding area (FDA), a first non-folding area (NFA1), and a second non-folding area (NFA2). The folding area (FDA) may be an area where the display device (10) is bent or folded, and the first non-folding area (NFA1) and the second non-folding area (NFA2) may be areas where the display device (10) is not bent or folded. In one embodiment, the first non-folding area (NFA1) and the second non-folding area (NFA2) may be flat areas of the display device (10).

[0072] The first non-folding area (NFA1) may be arranged on one side of the folding area (FDA), for example, on the left side. The second non-folding area (NFA2) may be arranged on the other side of the folding area (FDA), for example, on the right side. The folding area (FDA) may be an area defined by the first folding line (FL1) and the second folding line (FL2), and may be an area where the display device (10) is bent at a predetermined curvature. The first folding line (FL1) may be a boundary between the folding area (FDA) and the first non-folding area (NFA1), and the second folding line (FL2) may be a boundary between the folding area (FDA) and the second non-folding area (NFA2).

[0073] The first folding line (FL1) and the second folding line (FL2) extend in the second direction (DR2) as shown in FIGS. 1 and 2, and in this case, the display device (10) can be folded based on the second direction (DR2). As a result, the length of the display device (10) in the first direction (DR1) can be reduced by approximately half, making it convenient for a user to carry the display device (10).

[0074] When the first folding line (FL1) and the second folding line (FL2) extend in the second direction (DR2) as shown in FIGS. 1 and 2, the length of the folding area (FDA) in the second direction (DR2) may be longer than the length of the first direction (DR1). In addition, the length of the first non-folding area (NFA1) in the second direction (DR2) may be longer than the length of the first non-folding area (NFA1) in the first direction (DR1). The length of the second non-folding area (NFA2) in the second direction (DR2) may be longer than the length of the second non-folding area (NFA2) in the first direction (DR1).

[0075] Each of the display area (DA) and the non-display area (NDA) may overlap at least one of the folding area (FDA), the first non-folding area (NFA1), and the second non-folding area (NFA2). In FIGS. 1 and 2 , it is exemplified that each of the display area (DA) and the non-display area (NDA) overlaps the folding area (FDA), the first non-folding area (NFA1), and the second non-folding area (NFA2).

[0076] Fig. 3 is a perspective view showing a display device in an unfolded state according to another embodiment. Fig. 4 is a perspective view showing a display device in a folded state according to another embodiment.

[0077] The embodiments of FIGS. 3 and 4 differ from the embodiments of FIGS. 1 and 2 only in that the first folding line (FL1) and the second folding line (FL2) extend in the first direction (DR1) and the display device (10) is folded in the second direction (DR2), so that the length of the display device (10) in the second direction (DR2) is reduced by approximately half. Therefore, in FIGS. 3 and 4, any description overlapping with the embodiments of FIGS. 1 and 2 will be omitted.

[0078] Referring to FIGS. 3 and 4, FIG. 3 shows a first state of the display device (10) that is unfolded without being bent at the folding lines (FL1, FL2), and FIG. 2 shows a second state of the display device (10) that is bent at the folding lines (FL1, FL2).

[0079] In the first state where the display device (10) is unfolded, the long side of the display device (10) can extend along the second direction (DR2), and the short side of the display device (10) can extend along the first direction (DR1).

[0080] The first non-folding region (NFA1) may be arranged on one side of the folding region (FDA), for example, on the lower side. The second non-folding region (NFA2) may be arranged on the other side of the folding region (FDA), for example, on the upper side.

[0081] The first folding line (FL1) and the second folding line (FL2) extend in the first direction (DR1) as shown in FIGS. 3 and 4, and in this case, the display device (10) can be folded along the first direction (DR1). As a result, the length of the display device (10) in the second direction (DR2) can be reduced by approximately half, making it convenient for a user to carry the display device (10).

[0082] When the first folding line (FL1) and the second folding line (FL2) extend in the first direction (DR1) as shown in FIGS. 3 and 4, the length of the folding area (FDA) in the first direction (DR1) may be longer than the length in the second direction (DR2). In addition, the length of the first non-folding area (NFA1) in the second direction (DR2) may be longer than the length of the first non-folding area (NFA1) in the first direction (DR1). The length of the second non-folding area (NFA2) in the second direction (DR2) may be longer than the length of the second non-folding area (NFA2) in the first direction (DR1).

[0083] FIG. 5 is a cross-sectional view showing an example of a display panel according to one embodiment.

[0084] Referring to FIG. 5, the display panel (100) may include a substrate (SUB), a display layer (DISL) disposed on the substrate (SUB), and a touch sensing layer (TDL) disposed on the display layer (DISL). The display layer (DISL) may include a thin film transistor layer (TFTL), a light emitting element layer (EML), and an encapsulation layer (TFEL).

[0085] A thin film transistor layer (TFTL) may be disposed on the substrate (SUB). The thin film transistor layer (TFTL) may include a barrier film (BR), a thin film transistor (TFT1), a first capacitor electrode (CAE1), a second capacitor electrode (CAE2), a first anode connection electrode (ANDE1), a second anode connection electrode (ANDE2), a gate insulating film (130), a first interlayer insulating film (141), a second interlayer insulating film (142), a first planarization film (160), and a second planarization film (180).

[0086] The substrate (SUB) may be made of or include an insulating material such as a polymer resin. For example, in one embodiment, the substrate (SUB) may be made of or include polyimide. The substrate (SUB) may be a flexible substrate capable of bending, folding, rolling, etc.

[0087] A barrier film (BR) may be disposed on the substrate (SUB). The barrier film (BR) is a film for protecting the thin film transistors of the thin film transistor layer (TFTL) and the light-emitting layer (172) of the light-emitting element layer (EML) from moisture penetrating through the substrate (SUB) which is vulnerable to moisture permeation. The barrier film (BR) may be formed of a plurality of inorganic films that are alternately laminated. For example, in one embodiment, the barrier film (BR) may be a multi-film in which one or more inorganic films of a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer are alternately laminated.

[0088] A thin film transistor (TFT1) may be disposed on the barrier film (BR). An active layer (ACT1) of the thin film transistor (TFT1) may be disposed on the barrier film (BR). The active layer (ACT1) of the thin film transistor (TFT1) may include polycrystalline silicon, single crystal silicon, low-temperature polycrystalline silicon, amorphous silicon, or an oxide semiconductor.

[0089] The active layer (ACT1) may include a channel region (CHA1), a source region (TS1), and a drain region (TD1). The channel region (CHA1) may be a region overlapping the gate electrode (TG1) in a third direction (DR3) which is a thickness direction of the substrate (SUB). The source region (TS1) may be disposed on one side of the channel region (CHA1), and the drain region (TD1) may be disposed on the other side of the channel region (CHA1). The source region (TS1) and the drain region (TD1) may be regions that do not overlap the gate electrode (TG1) in the third direction (DR3). The source region (TS1) and the drain region (TD1) may be regions in which ions or impurities are doped into a silicon semiconductor or an oxide semiconductor to have conductivity.

[0090] A gate insulating film (130) may be disposed on the active layer (ACT1) of the thin film transistor (TFT1). The gate insulating film (130) may be formed of an inorganic film, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0091] A gate electrode (TG1) of a thin film transistor (TFT1) and a first capacitor electrode (CAE1) may be disposed on a gate insulating film (130). The gate electrode (TG1) may overlap the channel region (CHA1) in the third direction (DR3). Although FIG. 5 illustrates that the gate electrode (TG1) and the first capacitor electrode (CAE1) are disposed apart from each other, the gate electrode (TG1) and the first capacitor electrode (CAE1) may be connected to each other and formed as a single body. The gate electrode (TG1) and the first capacitor electrode (CAE1) may be formed as a single layer or multiple layers made of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0092] A first interlayer insulating film (141) may be disposed on the gate electrode (TG1) and the first capacitor electrode (CAE1) of the thin film transistor (TFT1). The first interlayer insulating film (141) may be formed of an inorganic film, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. The first interlayer insulating film (141) may be formed of a plurality of inorganic films.

[0093] A second capacitor electrode (CAE2) may be disposed on the first interlayer insulating film (141). The second capacitor electrode (CAE2) may overlap the first capacitor electrode (CAE1) of the thin film transistor (TFT1) in the third direction (DR3). In addition, when the gate electrode (TG1) and the first capacitor electrode (CAE1) are formed integrally, the second capacitor electrode (CAE2) may overlap the gate electrode (TG1) in the third direction (DR3). Since the first interlayer insulating film (141) has a predetermined permittivity, a capacitor may be formed by the first capacitor electrode (CAE1), the second capacitor electrode (CAE2), and the first interlayer insulating film (141) disposed therebetween. The second capacitor electrode (CAE2) may be formed as a single layer or multiple layers made of one or an alloy of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu).

[0094] A second interlayer insulating film (142) may be disposed on the second capacitor electrode (CAE2). The second interlayer insulating film (142) may be formed of an inorganic film, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. The second interlayer insulating film (142) may be formed of a plurality of inorganic films.

[0095] A first anode connection electrode (ANDE1) may be disposed on the second interlayer insulating film (142). The first anode connection electrode (ANDE1) may be connected to a drain region (TD1) of a thin film transistor (TFT1) through a first connection contact hole (ANCT1) penetrating the gate insulating film (130), the first interlayer insulating film (141), and the second interlayer insulating film (142). The first anode connection electrode (ANDE1) may be formed as a single layer or multiple layers made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0096] A first planarization film (160) may be disposed on the first anode connection electrode (ANDE1) to planarize the step caused by the thin film transistor (TFT1). The first planarization film (160) may be formed of an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0097] A second anode connection electrode (ANDE2) may be disposed on the first planarization film (160). The second anode connection electrode (ANDE2) may be connected to the first anode connection electrode (ANDE1) through a second connection contact hole (ANCT2) penetrating the first planarization film (160). The second anode connection electrode (ANDE2) may be formed as a single layer or multiple layers made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0098] A second planarization film (180) may be disposed on the second anode connection electrode (ANDE2). The second planarization film (180) may be formed of an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0099] A light emitting element layer (EML) including light emitting elements (LELs) and banks (190) can be arranged on the second planarization film (180). Each of the light emitting elements (LELs) includes a pixel electrode (171), a light emitting layer (172), and a common electrode (173).

[0100] The pixel electrode (171) may be placed on the second planarization film (180). The pixel electrode (171) may be connected to the second anode connection electrode (ANDE2) through a third connection contact hole (ANCT3) penetrating the second planarization film (180).

[0101] In a top emission structure that emits light in the direction of the common electrode (173) based on the light emitting layer (172), the pixel electrode (171) can be formed of a metal material having a high reflectivity, such as a stacked structure of aluminum (Al) and titanium (Ti) (Ti / Al / Ti), a stacked structure of aluminum (Al) and indium tin oxide (ITO) (ITO / Al / ITO), a stacked structure of silver (Ag) and indium tin oxide (ITO / Ag / ITO), an APC alloy, and a stacked structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

[0102] The bank (190) may be arranged to partition the pixel electrode (171) on the second planarization film (180) to define the light-emitting portion (EA1, EA2). The bank (190) may be arranged to cover the edge of the pixel electrode (171). The bank (190) may be formed of an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0103] Each of the first light-emitting portion (EA1) and the second light-emitting portion (EA2) represents a region in which a pixel electrode (171), a light-emitting layer (172), and a common electrode (173) are sequentially laminated, and holes from the pixel electrode (171) and electrons from the common electrode (173) recombine in the light-emitting layer (172) to emit light.

[0104] A light-emitting layer (172) may be disposed on the pixel electrode (171) and the bank (190). The light-emitting layer (172) may include an organic material and emit light of a predetermined color. For example, in one embodiment, the light-emitting layer (172) may include a hole transporting layer, an organic material layer, and an electron transporting layer.

[0105] The common electrode (173) may be disposed on the light-emitting layer (172). The common electrode (173) may be disposed to cover the light-emitting layer (172). The common electrode (173) may be a common layer formed commonly on the first light-emitting portion (EA1) and the second light-emitting portion (EA2).

[0106] In the upper light-emitting structure, the common electrode (173) may be formed of or include a transparent conductive material (TCO) that can transmit light, such as ITO or IZO, or a semi-transmissive conductive material, such as magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag). When the common electrode (173) is formed of or includes a semi-transmissive conductive material, the light emission efficiency may be increased by the micro cavity.

[0107] A spacer (191) may be placed on the bank (190). The spacer (191) may serve to support a mask during the manufacturing process of manufacturing the light-emitting layer (172). The spacer (191) may be formed of an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0108] In some embodiments, the display panel (100) may further include a capping layer (CPL) disposed on the common electrode (173). The capping layer (CPL) may include an inorganic material. For example, in one embodiment, the capping layer (CPL) may include at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, and silicon oxynitride.

[0109] An encapsulation layer (TFEL) may be disposed on the common electrode (173). The encapsulation layer (TFEL) may include at least one inorganic film to prevent oxygen or moisture from penetrating into the light emitting element layer (EML). In addition, the encapsulation layer (TFEL) may include at least one organic film to protect the light emitting element layer (EML) from foreign substances such as dust. For example, in one embodiment, the encapsulation layer (TFEL) may include a first encapsulation inorganic film (TFE1), an encapsulation organic film (TFE2), and a second encapsulation inorganic film (TFE3).

[0110] The first encapsulating inorganic film (TFE1) may be disposed on the common electrode (173), the encapsulating organic film (TFE2) may be disposed on the first encapsulating inorganic film (TFE1), and the second encapsulating inorganic film (TFE3) may be disposed on the encapsulating organic film (TFE2). For example, in one embodiment, the first encapsulating inorganic film (TFE1) and the second encapsulating inorganic film (TFE3) may be formed as a multi-film in which one or more inorganic films of a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer are alternately laminated. The encapsulating organic film (TFE2) may be an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0111] A touch sensing layer (TDL) may be disposed on the encapsulation layer (TFEL). The touch sensing layer (TDL) includes a first touch insulating layer (TINS1), a connection electrode (BE), a second touch insulating layer (TINS2), a driving electrode (TE), a sensing electrode (RE), and a third touch insulating layer (TINS3).

[0112] The first touch insulating film (TINS1) may be disposed on the encapsulation layer (TFEL). The first touch insulating film (TINS1) may be formed of an inorganic film, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0113] A connection electrode (BE) may be arranged on the first touch insulating film (TINS1). The connection electrode (BE) may be formed as a single layer or multiple layers made of one or an alloy of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu).

[0114] A second touch insulating film (TINS2) may be disposed on the connection electrode (BE). The second touch insulating film (TINS2) may be formed of an inorganic film, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. Alternatively, the second touch insulating film (TINS2) may be formed of an organic film, such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0115] Drive electrodes (TE) and sense electrodes (RE) may be arranged on the second touch insulating film (TINS2). The drive electrodes (TE) and sense electrodes (RE) may be formed as a single layer or multiple layers made of one or an alloy of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu).

[0116] The driving electrode (TE) and the sensing electrode (RE) can overlap with the connection electrode (BE) in the third direction (DR3). The driving electrode (TE) can be connected to the connection electrode (BE) through a touch contact hole (TCNT1) penetrating the first touch insulating film (TINS1).

[0117] A third touch insulating film (TINS3) may be disposed on the driving electrodes (TE) and the sensing electrodes (RE). The third touch insulating film (TINS3) may serve to level the steps formed by the driving electrodes (TE), the sensing electrodes (RE), and the connection electrodes (BE). The third touch insulating film (TINS3) may be formed of an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0118] In one embodiment, the thickness of the display panel (100) may be approximately 20 μm to 50 μm. Preferably, the thickness of the display panel (100) may be approximately 30 μm.

[0119] Fig. 6 is an exploded perspective view showing a display device according to one embodiment. Fig. 7 is a cross-sectional view taken along line X1-X1' of Fig. 6. Fig. 8 is a cross-sectional view showing a portion of a display device according to one embodiment. Fig. 9 is a graph comparing modulus values ​​of various materials according to temperature.

[0120] Referring to FIGS. 6 to 9, a display device (10) according to one embodiment may include a panel member (PM), an upper member (UM), and a lower member (DM). The panel member (PM) may include a display panel (100), a lower panel film (200), a first adhesive member (ADH1), and a second adhesive member (ADH2). The upper member (UM) may include an elastic member (300), a first rigid member (400), a third adhesive member (ADH3), and a fourth adhesive member (ADH4). The lower member (DM) may include a panel support member (800), a lower visibility preventing member (LPU), a digitizer member (900), a metal support member (1000), a buffer member (1100), a penetration preventing member (1200), and an eighth adhesive member (ADH8).

[0121] The description of the display panel (100) has been described above with reference to FIG. 5, so it will be omitted.

[0122] The lower panel film (200) may be disposed on the back surface of the display panel (100). The lower panel film (200) may support the display panel (100) and serve to protect the back surface of the display panel (100). For example, in one embodiment, the display panel (100) may include flexible materials, and thus may easily change shape or be vulnerable to external impact when moved. As in the display device (10) according to the present embodiment, by disposing the lower panel film (200) on the back surface of the display panel (100), the movement of the panel member (PM) and its combination with other members may be facilitated.

[0123] In one embodiment, the thickness of the panel lower film (200) may be approximately 30 μm to 70 μm. Preferably, the thickness of the panel lower film (200) may be approximately 50 μm.

[0124] In some embodiments, the panel lower film (200) may be a plastic such as polyethylene terephthalate (PET) or polyimide. While FIGS. 6 and 7 illustrate that the panel lower film (200) is also positioned in the folding area (FDA) of the display device (10), the embodiments of the present disclosure are not limited thereto. For example, the panel lower film (200) may be removed from the folding area (FDA) of the display device (10) to allow the display device (10) to be smoothly folded.

[0125] The first adhesive member (ADH1) may be disposed on the back surface of the display panel (100). For example, in one embodiment, the first adhesive member (ADH1) may be disposed between the display panel (100) and the panel lower film (200). The display panel (100) and the panel lower film (200) may be coupled to each other through the first adhesive member (ADH1).

[0126] The second adhesive member (ADH2) may be disposed on the back surface of the panel lower film (200). For example, in one embodiment, the second adhesive member (ADH2) may be disposed between the panel lower film (200) and the lower member (DM). The panel lower film (200) and the lower member (DM) may be bonded to each other through the second adhesive member (ADH2).

[0127] The first adhesive member (ADH1) and the second adhesive member (ADH2) may include a transparent adhesive such as a pressure sensitive adhesive (PSA) or an optically clear adhesive (OCA). The first adhesive member (ADH1) and the second adhesive member (ADH2) may include an acrylic adhesive material.

[0128] The upper member (UM) may include various protective members for protecting the display panel (100). For example, in one embodiment, when the display device (10) is out-folded, the display surface of the display panel (100) is always exposed to the outside, so the upper member (UM) may include protective members for protecting the display panel (100) from external impact.

[0129] External impacts can include impacts from sharp objects and blunt objects. For example, impacts from sharp objects like awls can cause damage, such as scratches, on the impacted surface, or cause deep, thickness-dependent damage to localized areas of low-hardness or low-rigidity materials. Furthermore, impacts from blunt objects like steel balls have high momentum, so the impact can be transmitted not only to the impacted surface but also to all underlying layers.

[0130] The elastic member (300) may be arranged on the front surface of the display panel (100). The elastic member (300) may have a shock-absorbing function to protect the display panel (100) from external impact. For example, the elastic member (300) may absorb impact from the aforementioned blunt objects. Since the elastic member (300) has high elasticity, it may delay the time for high momentum generated from impact from blunt objects to be transferred, thereby minimizing the amount of impact applied to the display panel (100). Accordingly, the display device (10) may have high impact resistance from external impact.

[0131] In one embodiment, the thickness of the elastic member (300) may be approximately 100 μm to 200 μm. Preferably, the thickness of the elastic member (300) may be approximately 150 μm.

[0132] For example, in one embodiment, the elastic member (300) may include thermoplastic polyurethane (TPU). In another embodiment, the elastic member (300) may include polyether block amide (PEBA). The elastic member (300) according to the present embodiment may minimize the amount of impact applied to the display panel (100) by including at least one of thermoplastic polyurethane (TPU) and polyether block amide (PEBA). Accordingly, the display device (10) may have high impact resistance from external impact.

[0133] For example, in one embodiment, as illustrated in FIG. 9, a typical non-retardation film (NRF) comprising polyethylene terephthalate (PET) can have a high modulus value of approximately 4 gigapascals (GPa) at room temperature.

[0134] In this specification, the modulus value means Young's modulus, and means a value measured by, for example, ASTM D638 or ASTM D3039.

[0135] On the other hand, the elastic member (300) according to the present embodiment, which includes thermoplastic polyurethane (TPU) and polyether block amide (PEBA), may have a low modulus value of less than approximately 1 GPa at room temperature. Accordingly, the elastic member (300) including thermoplastic polyurethane (TPU) and polyether block amide (PEBA) may have high elasticity and restoring force, thereby minimizing the amount of impact applied to the display panel (100). Accordingly, the display device (10) may have high impact resistance from external impact.

[0136] Meanwhile, the elastic member (300) including polyether block amide (PEBA) may have a small difference in modulus value change according to temperature change. For example, in one embodiment, the elastic member (300) including polyether block amide (PEBA) may have a modulus value difference of approximately 1 GPa in the range of -40°C to +80°C. On the other hand, the elastic member (300) including thermoplastic polyurethane (TPU) may have a modulus value difference of approximately 2.5 GPa in the range of -40°C to +80°C, and the non-retardation film (NRF) including polyethylene terephthalate (PET) may have a modulus value difference of approximately 1.5 GPa in the range of -40°C to +80°C. In this way, the elastic member (300) according to the present embodiment may have excellent mechanical properties regardless of temperature change by including polyether block amide (PEBA).

[0137] In some embodiments, the elastic member (300) may include a dilatant. A dilatant is a non-Newtonian fluid, and refers to a dilatancy fluid in which the rate of change of shear stress with respect to the shear rate increases as the shear stress or shear rate increases. The viscosity of the dilatant may increase as the shear stress or shear rate increases. The elastic member (300) according to the present embodiment may minimize the amount of impact applied to the display panel (100) by including the dilatant. A method for minimizing the amount of impact when the elastic member (300) includes the dilatant will be described later with reference to FIG. 16 and the like.

[0138] The first rigid member (400) may be disposed on the elastic member (300). The first rigid member (400) may have a shock-absorbing function to protect the display panel (100) from external impact. For example, the first rigid member (400) may absorb impact from the aforementioned sharp objects. The first rigid member (400) has high rigidity, thereby minimizing scratches or deep damage to localized areas from impact from sharp objects. Accordingly, the display device (10) may have high shock resistance from external impact.

[0139] The first rigid member (400) may include a material having high rigidity, high flexibility, and scratch resistance. In one embodiment, the first rigid member (400) may include at least one of polyethylene terephthalate (PET), polyimide, and ultra-thin glass (UTG). Ultra-thin glass refers to glass having a thickness of approximately 500 μm or less.

[0140] In one embodiment, the thickness of the first rigid member (400) may be approximately 70 μm to 100 μm. Preferably, the thickness of the first rigid member (400) may be approximately 80 μm.

[0141] In the drawing, the first rigid member (400) is illustrated as having a single layer, but is not limited thereto. For example, the first rigid member (400) may have a multi-layer structure of two or more layers.

[0142] In some embodiments, the modulus value of the first rigid member (400) may be greater than the modulus value of the elastic member (300). For example, in one embodiment, the modulus value of the first rigid member (400) may be about 10 GPa to 15 GPa, and the modulus value of the elastic member (300) may be less than 1 GPa.

[0143] The display device (10) according to the present embodiment can mitigate impacts from sharp objects by forming the modulus value of the first rigid member (400) to be 10 GPa or more. In addition, the display device (10) according to the present embodiment can minimize bending stress applied to the display device (10) when the display device (10) is bent by forming the modulus value of the first rigid member (400) to be 15 GPa or less.

[0144] In some embodiments, the first rigid member (400) may include a coating layer (HCL) (see FIG. 13) on its upper surface. By including the coating layer (HCL) (see FIG. 13), the first rigid member (400) may perform functions such as anti-scratch and anti-dent functions. The coating layer (HCL) may be a hard coated layer formed through heat treatment or the like.

[0145] The third adhesive member (ADH3) may be disposed on the back surface of the elastic member (300). For example, in one embodiment, the third adhesive member (ADH3) may be disposed between the elastic member (300) and the panel member (PM). The elastic member (300) and the panel member (PM) may be coupled to each other via the third adhesive member (ADH3).

[0146] The fourth adhesive member (ADH4) may be disposed on the back surface of the first rigid member (400). For example, in one embodiment, the fourth adhesive member (ADH4) may be disposed between the first rigid member (400) and the elastic member (300). The first rigid member (400) and the elastic member (300) may be coupled to each other via the fourth adhesive member (ADH4).

[0147] The third adhesive member (ADH3) and the fourth adhesive member (ADH4) may include a transparent adhesive such as a pressure sensitive adhesive (PSA) or an optically clear adhesive (OCA). The third adhesive member (ADH3) and the fourth adhesive member (ADH4) may include an acrylic adhesive material.

[0148] In some embodiments, at least one of the third adhesive member (ADH3) and the fourth adhesive member (ADH4) may include a dilatant. In the display device (10) according to the present embodiment, since at least one of the third adhesive member (ADH3) and the fourth adhesive member (ADH4) includes a dilatant, the amount of impact applied to the display panel (100) can be minimized, similar to the elastic member (300).

[0149] The panel support member (800) may be disposed on the back surface of the panel lower film (200). The panel support member (800) may be a rigid member whose shape or volume is not easily changed by external pressure. The panel support member (800) is disposed on the back surface of the display panel (100), and since it is a rigid member whose shape or volume is not easily changed by external pressure, it can support the display panel (100).

[0150] In one embodiment, the thickness of the panel support member (800) may be approximately 100 μm to 150 μm. Preferably, the thickness of the panel support member (800) may be approximately 120 μm.

[0151] For example, in one embodiment, the panel support member (800) may be a polymer including carbon fibers or glass fibers. For example, if the fiber yarns of the panel support member (800) include carbon fibers, the resin may be an epoxy, polyester, polyamide, polycarbonate, polypropylene, polybutylene, or vinyl ester. As another example, if the fiber yarns of the panel support member (800) include glass fibers, the resin may be an epoxy, polyester, polyamide, or vinyl ester.

[0152] When the panel support member (800) is formed of or includes a polymer including carbon fiber or glass fiber, it can pass a magnetic field or electromagnetic signal of the digitizer member (900). Therefore, a panel support member (800) that can support the display panel (100) without lowering the touch sensitivity of the digitizer member (900) can be provided.

[0153] In another embodiment, the panel support member (800) may be a metal plate. For example, in one embodiment, the panel support member (800) may be a metal plate, and may be made of or include a metal or a metal alloy. The panel support member (800) may include, but is not limited to, copper (Cu), aluminum (Al), stainless steel (SUS), and / or alloys thereof.

[0154] The panel support member (800) may include a grid pattern arranged in the folding area (FDA) so that it can be easily bent in the folding area (FDA). By including the grid pattern arranged in the folding area (FDA), the panel support member (800) can be easily bent when the display device (10) is folded.

[0155] The panel support member (800) may include a folding portion, a first non-folding portion, and a second non-folding portion. The folding portion may be disposed in the folding area (FDA), the first non-folding portion may be disposed in the first non-folding area (NFA1), and the second non-folding portion may be disposed in the second non-folding area (NFA2).

[0156] The folding portion may be a portion that folds when the display device (10) is folded. The folding portion may be positioned between the first non-folding portion and the second non-folding portion in the first direction (DR1). The folding portion may include a plurality of bars and a plurality of slits positioned between the plurality of bars.

[0157] The plurality of bars may include horizontal bars each extending in a first direction (DR1) and vertical bars each extending in a second direction (DR2). The plurality of slits may each be holes penetrating the panel support member (800) in a third direction (DR3). The plurality of slits may each extend in the second direction (DR2). The folding member may have flexibility by including the plurality of slits. That is, the folding member may be elongated in the first direction (DR1) when the display device (10) is folded.

[0158] The first non-folding portion and the second non-folding portion may be portions that are folded when the display device (10) is folded. The first non-folding portion may be arranged on one side of the folding portion in the first direction (DR1), and the second non-folding portion may be arranged on the other side of the folding portion in the first direction (DR1).

[0159] A lower visibility preventing member (LPU) may be disposed on the back surface of the panel support member (800). The lower visibility preventing member (LPU) may be disposed to overlap the folding area (FDA). The lower visibility preventing member (LPU) may be disposed on the same layer as the eighth adhesive member (ADH8). The lower visibility preventing member (LPU) may be disposed between the first sub-adhesive member (ADH8-1) and the second sub-adhesive member (ADH8-2). The lower visibility preventing member (LPU) may prevent the grid pattern of the panel support member (800) from being visible to the outside. The lower visibility preventing member (LPU) may include a flexible material to reduce folding stress of the display device (10).

[0160] The digitizer member (900) may include a first digitizer member (910) and a second digitizer member (920). The first digitizer member (910) and the second digitizer member (920) may be disposed on the back surface of the panel support member (800).

[0161] The first digitizer member (910) and the second digitizer member (920) may not be disposed in the folding area (FDA) to reduce folding stress of the display device (10). The first digitizer member (910) may be disposed in the first non-folding area (NFA1), and the second digitizer member (920) may be disposed in the second non-folding area (NFA2). A gap between the first digitizer member (910) and the second digitizer member (920) overlaps the folding area (FDA) and may have a width smaller than the width of the folding area (FDA). The width of the folding area (FDA) may be the length of the folding area (FDA) in the first direction (DR1).

[0162] The first digitizer member (910) and the second digitizer member (920) may include electrode patterns for detecting the approach or contact of an electronic pen, such as a stylus pen supporting electromagnetic resonance (EMR). The first digitizer member (910) and the second digitizer member (920) may detect a magnetic field or electromagnetic signal emitted from the electronic pen based on the electrode patterns, and determine a point at which the detected magnetic field or electromagnetic signal is the largest as a touch coordinate.

[0163] Magnetic metal powder may be placed on the back surface of the first digitizer member (910) and the back surface of the second digitizer member (920). In this case, a magnetic field or electromagnetic signal passing through the first digitizer member (910) and the second digitizer member (920) may flow into the interior of the magnetic metal powder. Therefore, due to the magnetic metal powder, the magnetic field or electromagnetic signal of the first digitizer member (910) and the second digitizer member (920) may be reduced from being emitted to the back surface of the display device (10).

[0164] The metal support member (1000) may include a first metal support member (1010) and a second metal support member (1020). The first metal support member (1010) may be disposed on the back surface of the first digitizer member (910), and the second metal support member (1020) may be disposed on the back surface of the second digitizer member (920).

[0165] The first metal support member (1010) and the second metal support member (1020) may not be disposed in the folding area (FDA) to reduce folding stress of the display device (10). The first metal support member (1010) may be disposed in the first non-folding area (NFA1), and the second metal support member (1020) may be disposed in the second non-folding area (NFA2). A gap between the first metal support member (1010) and the second metal support member (1020) may overlap the folding area (FDA) and have a width smaller than the width of the folding area (FDA).

[0166] The first metal support member (1010) and the second metal support member (1020) may include a material having high rigidity to support the first digitizer member (910) and the second digitizer member (920). For example, in one embodiment, the first metal support member (1010) and the second metal support member (1020) may include stainless steel such as SUS316.

[0167] The buffer member (1100) may include a first buffer member (1110) and a second buffer member (1120). The first buffer member (1110) and the second buffer member (1120) may absorb external impacts to prevent the panel support member (800) and the digitizer member (900) from being damaged. The first buffer member (1110) and the second buffer member (1120) may include an elastic material, such as a sponge formed by foaming rubber, a urethane-based material, or an acrylic-based material.

[0168] The first buffer member (1110) may be disposed on the back surface of the first metal support member (1010), and the second buffer member (1120) may be disposed on the back surface of the second metal support member (1020). The first buffer member (1110) and the second buffer member (1120) may not be disposed in the folding area (FDA) to reduce folding stress of the display device (10). The first buffer member (1110) may be disposed in the first non-folding area (NFA1), and the second buffer member (1120) may be disposed in the second non-folding area (NFA2). A gap between the first buffer member (1110) and the second buffer member (1120) may overlap the folding area (FDA) and have a width smaller than the width of the folding area (FDA).

[0169] The penetration prevention member (1200) may be disposed on the back surface of the first metal support member (1010) and the back surface of the second metal support member (1020). The penetration prevention member (1200) may be disposed at the edge of the first metal support member (1010) and the edge of the second metal support member (1020). In the drawing, the penetration prevention member (1200) is illustrated as being disposed only at the edge of the first metal support member (1010) and the edge of the second metal support member (1020) in the first direction (DR1), but is not limited thereto. For example, the penetration prevention member (1200) may be disposed to surround the first buffer member (1110) and the second buffer member (1120) in the entire plane along the first direction (DR1) and the second direction (DR2).

[0170] The penetration prevention member (1200) may be a waterproof (dustproof) tape or a waterproof (dustproof) member that is attached to the front of a frame (not shown) or housing (not shown) that is arranged on the back surface of the metal support member (1000) and the back surface of the buffer member (1100). As a result, the penetration prevention member (1200) can prevent moisture or dust from penetrating into the display device (10). In other words, a display device (10) that is waterproof and dustproof can be provided.

[0171] In another embodiment, the penetration prevention member (1200) may be positioned so as to overlap the magnet for maintaining the folding of the display device (10) in the third direction (DR3) without surrounding the first buffer member (1110) and the second buffer member (1120). In this case, the penetration prevention member (1200) may function as a magnetic shielding member capable of shielding the magnetism of the magnet to prevent the digitizer member (900) or the display panel (100) from being affected by the magnetism of the magnet.

[0172] The eighth adhesive member (ADH8) may be disposed on the back surface of the panel support member (800). For example, in one embodiment, the eighth adhesive member (ADH8) may be disposed between the panel support member (800) and the digitizer member (900). The panel support member (800) and the digitizer member (900) may be coupled to each other via the eighth adhesive member (ADH8).

[0173] In one embodiment, the eighth adhesive member (ADH8) may include a first sub-adhesive member (ADH8-1) and a second sub-adhesive member (ADH8-2). The first sub-adhesive member (ADH8-1) and the second sub-adhesive member (ADH8-2) may be disposed on opposite sides with the lower visibility preventing member (LPU) interposed therebetween. For example, in one embodiment, the first sub-adhesive member (ADH8-1) may be disposed on the first digitizer member (910), and the second sub-adhesive member (ADH8-2) may be disposed on the second digitizer member (920).

[0174] The eighth adhesive member (ADH8) may include a transparent adhesive such as a pressure sensitive adhesive (PSA) or an optically clear adhesive (OCA). The eighth adhesive member (ADH8) may include an acrylic adhesive material.

[0175] The first to fourth adhesive members (ADH1, ADH2, ADH3, ADH4) and the eighth adhesive member (ADH8) can alleviate folding stress that may be applied to the display device (10) when the display device (10) is folded. The first to fourth adhesive members (ADH1, ADH2, ADH3, ADH4) and the eighth adhesive member (ADH8) have elasticity and restoring force, and thus can alleviate folding stress that may be applied to the display device (10) when the display device (10) is folded.

[0176] In this case, depending on the thickness of the first to fourth adhesive members (ADH1, ADH2, ADH3, ADH4) and the eighth adhesive member (ADH8), the degree of relaxation of the stress applied to the adjacent member may vary. For example, in one embodiment, as the thickness of the first to fourth adhesive members (ADH1, ADH2, ADH3, ADH4) and the eighth adhesive member (ADH8) increases, the stress applied to the adjacent member may be further reduced.

[0177] In the display device (10) according to the present embodiment, as illustrated in FIG. 8, the thickness of each of the adhesive members disposed on the front surface of the display panel (100) may be greater than the thickness of each of the adhesive members disposed on the back surface of the display panel (100). For example, in one embodiment, the thicknesses (ADH3_H, ADH4_H) of the third adhesive member (ADH3) and the fourth adhesive member (ADH4) may be greater than the thicknesses (ADH1_H, ADH_2, ADH_8) of the first adhesive member (ADH1), the second adhesive member (ADH2), and the eighth adhesive member (ADH8) in the third direction (DR3).

[0178] In one embodiment, the thickness of each of the adhesive members disposed on the front surface of the display panel (100) may be two to five times the thickness of each of the adhesive members disposed on the back surface of the display panel (100). For example, in one embodiment, the thicknesses (ADH3_H, ADH4_H) of the third adhesive member (ADH3) and the fourth adhesive member (ADH4) may be approximately 75 μm, and the thicknesses (ADH1_H, ADH_2, ADH_8) of the first adhesive member (ADH1), the second adhesive member (ADH2), and the eighth adhesive member (ADH8) may be approximately 25 μm, but are not limited thereto.

[0179] The display device (10) according to the present embodiment can receive more folding stress from the upper portion than from the lower portion of the display panel (100) by including an elastic member (300) and a first rigid member (400) having a relatively thick upper portion (UM). Accordingly, by making the thickness of each of the adhesive members arranged on the front surface of the display panel (100) thicker than the thickness of each of the adhesive members arranged on the back surface, the folding stress can be maintained in balance at the upper and lower portions of the display panel (100).

[0180] Fig. 10 is a cross-sectional view showing a state in which a first object is impacted on a display device according to a first comparative example. Fig. 11 is a cross-sectional view showing a state in which a second object is impacted on a display device according to a first comparative example. Fig. 12 is a cross-sectional view showing a state in which a second object is impacted on a display device according to a second comparative example. Fig. 13 is a cross-sectional view showing a state in which a first object is impacted on a display device according to an embodiment. Figs. 14 and 15 are cross-sectional views showing a state in which a second object is impacted on a display device according to an embodiment.

[0181] Referring to FIGS. 10 to 15, in the display device (10) according to the present embodiment, the first rigid member (400) may be directly placed on the elastic member (300). For example, in one embodiment, no other component other than the fourth adhesive member (ADH4) may be interposed between the first rigid member (400) and the elastic member (300).

[0182] In this specification, the term "one component being directly disposed on another component" includes a case where an adhesive member is interposed between the two components. When one component is directly disposed on another component, a case where a component other than the adhesive member is interposed between the two components is not included. Here, the adhesive member refers to the first to eighth adhesive members (ADH1, ADH2, ADH3, ADH4, ADH5, ADH6, ADH7, ADH8) in this specification.

[0183] As illustrated in FIG. 10, the display device (10') according to the first comparative embodiment may not have the first rigid member (400) disposed on the elastic member (300). In this case, the elastic member (300) having a low modulus value may be easily damaged by the first object (OBJ1), which is a sharp object.

[0184] As illustrated in FIG. 11, the elastic member (300) of the display device (10') according to the first comparative embodiment can receive a direct impact from the second object (OBJ2), which is a blunt object. Since the elastic member (300) has a low modulus value and high elasticity and restoring force, it can hardly transmit the impact received from the second object (OBJ2) in the horizontal direction, such as the first direction (DR1) and the second direction (DR2), and can transmit most of the impact in the vertical direction, such as the third direction (DR3). That is, although the elastic member (300) can partially reduce the impact received from the second object (OBJ2), the first range (R1), which is the range in which the amount of impact is transmitted in the horizontal direction, can be relatively narrow.

[0185] As illustrated in FIG. 12, the display device (10'') according to the second comparative embodiment may not have an elastic member (300) disposed between the display panel (100) and the first rigid member (400). In this case, the first rigid member (400) having a high modulus value can directly transmit the impact received from the second object (OBJ2), which is a blunt object, to the display panel (100).

[0186] On the other hand, as illustrated in FIG. 13, the display device (10) according to the present embodiment can minimize impact from a first object (OBJ1), which is a sharp object, by having the first rigid member (400) directly disposed on the elastic member (300). In some embodiments, the first rigid member (400) can also perform functions such as anti-scratch and anti-imprint by including a coating layer (HCL) on its upper surface.

[0187] In addition, as illustrated in FIGS. 14 and 15, the display device (10) according to the present embodiment can minimize the impact received from the second object (OBJ2), which is a blunt object, by arranging the elastic member (300) and the first rigid member (400) together on the display panel (100). For example, after the second object (OBJ2) hits the first rigid member (400), the first rigid member (400) can transmit the impact received from the second object (OBJ2) in a horizontal direction such as the first direction (DR1) and the second direction (DR2). Accordingly, the second range (R2), which is the range in which the amount of impact is transmitted in the horizontal direction, can be widened.

[0188] As the second range (R2) widens, the elastic member (300) can absorb impact in a vertical direction, such as the third direction (DR3), throughout the second range (R2). For example, in one embodiment, the thickness of the elastic member (300) can decrease from a first thickness (TH1) before receiving the impact to a second thickness (TH2) after receiving the impact. Accordingly, the range of impact amount that the elastic member (300) can absorb widens, thereby minimizing the impact applied to the display panel (100). Accordingly, the display device (10) can have high impact resistance from external impact.

[0189] Fig. 16 is a cross-sectional view showing the particle distribution of an elastic member according to one embodiment in a state without an external impact. Fig. 17 is a cross-sectional view showing the particle distribution of an elastic member according to one embodiment in a state with an external impact applied.

[0190] Referring to FIGS. 16 and 17, in a display device (10) according to one embodiment, an elastic member (300) may include a dilatant. The dilatant of the elastic member (300) may include a first particle (P1) having a solid property and a first fluid (Q1) having a liquid property.

[0191] The empty space between the plurality of first particles (P1) can be filled with a first fluid (Q1). The plurality of first particles (P1) maintain a minimum distance between themselves due to inter-particle attraction, and the first fluid (Q1) can be positioned in the empty space between them. For example, as illustrated in FIG. 16, the centers of the first particles (P1) of a first row (M1) arranged side by side along a third direction (DR3) can be staggered and not overlapped with the centers of the first particles (P1) of an adjacent second row (M2) in the first direction (DR1).

[0192] Meanwhile, when a force is applied to the elastic member (300) from the outside in a certain direction, the gap between the first particles (P1) increases, and the density of the first fluid (Q1) may decrease momentarily. Accordingly, an attractive force is generated to cause the first fluid (Q1) to flow between the first particles (P1), and a strong attractive force may be generated momentarily due to this inflow attractive force and the intermolecular attractive force of the first fluid (Q1). Consequently, the dilatant of the elastic member (300) may generate a higher attractive force as the external impact amount becomes stronger, thereby minimizing the impact transmitted to the display panel (100).

[0193] For example, as illustrated in FIG. 17, when an impact is applied from the upper direction to the lower direction, the gap between the first particles (P1) of the first row (M1) and the first particles (P1) of the second row (M2) may increase. In this process, the volume of the elastic member (300) may increase from the first volume (V1) to the second volume (V2). Accordingly, the density of the first fluid (Q1) located in the empty space between the first particles (P1) may decrease, and an attractive force may be generated to cause the first fluid (Q1) to flow in. As a result, the dilatant of the elastic member (300) may generate a higher attractive force as the external impact is stronger, thereby minimizing the impact transmitted to the display panel (100).

[0194] Hereinafter, other embodiments of a display device according to one embodiment will be described. In the following embodiments, the same components as in the previously described embodiments will be referred to by the same reference numerals, and duplicate descriptions will be omitted or simplified, with the differences being primarily described.

[0195] Fig. 18 is a cross-sectional view showing a display device according to another embodiment. Fig. 19 is a cross-sectional view showing a part of a display device according to another embodiment.

[0196] Referring to FIGS. 18 and 19, the display device (10) according to the present embodiment is different from the display device (10) according to the embodiment described with reference to FIG. 7 and the like in that it further includes a second rigid member (500).

[0197] More specifically, the display device (10) according to the present embodiment may further include a second rigid member (500) disposed between the display panel (100) and the elastic member (300).

[0198] The second rigid member (500) can have a shock-absorbing function to protect the display panel (100) from external impact. For example, the second rigid member (500) can absorb impact transmitted from the elastic member (300). Accordingly, the display device (10) can have high shock resistance against external impact.

[0199] The second rigid member (500) may include a material having high rigidity and high flexibility. In one embodiment, the second rigid member (500) may include at least one of polyethylene terephthalate (PET) and polyimide. In some embodiments, the second rigid member (500) may include the same material as the first rigid member (400), but is not limited thereto, and may include different materials.

[0200] In one embodiment, the thickness of the second rigid member (500) may be less than the thickness of the first rigid member (400). The thickness of the second rigid member (500) may be approximately 50 μm to 90 μm. Preferably, the thickness of the second rigid member (500) may be approximately 75 μm. In some embodiments, the modulus value of the second rigid member (500) may be equal to the modulus value of the first rigid member (400).

[0201] In the drawing, the second rigid member (500) is illustrated as having a single layer, but is not limited thereto. For example, the second rigid member (500) may have a multi-layer structure of two or more layers.

[0202] In the display device (10) according to the present embodiment, by arranging the first reinforcing member (400) and the second reinforcing member (500) on the front and back surfaces of the elastic member (300), respectively, the amount of impact applied to the display panel (100) can be further minimized.

[0203] The display device (10) according to the present embodiment may further include a fifth adhesive member (ADH5).

[0204] The fifth adhesive member (ADH5) may be disposed on the back surface of the second rigid member (500). For example, in one embodiment, the fifth adhesive member (ADH5) may be disposed between the second rigid member (500) and the display panel (100). The second rigid member (500) and the display panel (100) may be coupled to each other through the fifth adhesive member (ADH5).

[0205] The fifth adhesive member (ADH5) may include a transparent adhesive such as a pressure sensitive adhesive (PSA) or an optically clear adhesive (OCA). The fifth adhesive member (ADH5) may include an acrylic adhesive material.

[0206] In some embodiments, the fifth adhesive member (ADH5) may include a dilatant. In the display device (10) according to the present embodiment, since the fifth adhesive member (ADH5) includes a dilatant, the amount of impact applied to the display panel (100) can be minimized, similar to the elastic member (300).

[0207] The thickness (ADH5_H) of the fifth adhesive member (ADH5) may be greater than the respective thicknesses (ADH1_H, ADH_2) of the first adhesive member (ADH1) and the second adhesive member (ADH2). The thickness (ADH5_H) of the fifth adhesive member (ADH5) may be equal to the respective thicknesses (ADH3_H, ADH4_H) of the third adhesive member (ADH3) and the fourth adhesive member (ADH4). For example, in one embodiment, the thickness (ADH5_H) of the fifth adhesive member (ADH5) may be approximately 75 μm.

[0208] Meanwhile, in some embodiments, the third adhesive member (ADH3) disposed between the elastic member (300) and the second reinforcing member (500) may include an adhesive material. For example, in one embodiment, the adhesive strength of the third adhesive member (ADH3) may be lower than the adhesive strengths of each of the first adhesive member (ADH1), the second adhesive member (ADH2), the fourth adhesive member (ADH4), the fifth adhesive member (ADH5), and the eighth adhesive member (ADH8).

[0209] Additionally, in some embodiments, the width (ADH3_W) of the third adhesive member (ADH3) disposed between the elastic member (300) and the second reinforcing member (500) may be smaller than the respective widths (ADH1_W, ADH2_W, ADH4_W, ADH5_W) of the first adhesive member (ADH1), the second adhesive member (ADH2), the fourth adhesive member (ADH4), and the fifth adhesive member (ADH5) in the first direction (DR1).

[0210] In the display device (10) according to the present embodiment, since the adhesive strength of the third adhesive member (ADH3) is lower than the adhesive strength of each of the other adhesive members, and the width of the third adhesive member (ADH3) is smaller than the width of each of the other adhesive members, the layers arranged on the upper portion of the third adhesive member (ADH3) can be relatively easier to attach and detach than the other layers. Accordingly, if some layers of the upper member (UM) are damaged, they can be easily replaced with new layers.

[0211] Fig. 20 is a cross-sectional view showing a display device according to another embodiment. Fig. 21 is a cross-sectional view showing a part of a display device according to another embodiment.

[0212] Referring to FIGS. 20 and 21, the display device (10) according to the present embodiment is different from the display device (10) according to other embodiments described with reference to FIG. 18, etc. in that it further includes a third rigid member (600).

[0213] More specifically, the display device (10) according to the present embodiment may further include a third rigid member (600) disposed between the display panel (100) and the second rigid member (500).

[0214] The third rigid member (600) can have a shock-absorbing function to protect the display panel (100) from external impact. For example, the third rigid member (600) can absorb impact transmitted from the second rigid member (500). Accordingly, the display device (10) can have high shock resistance against external impact.

[0215] The third rigid member (600) may include a material having high rigidity and high flexibility. In one embodiment, the third rigid member (600) may include ultra-thin glass (UTG). In some embodiments, the third rigid member (600) may include the same material as the first rigid member (400), but is not limited thereto, and may include different materials.

[0216] In some embodiments, the thickness of the third rigid member (600) may be greater than the thickness of the first rigid member (400) and the thickness of each of the second rigid member (500). For example, in one embodiment, the thickness of the third rigid member (600) may be 80 μm to 100 μm. Preferably, the thickness of the third rigid member (600) may be 90 μm. Since the third rigid member (600) includes glass, it is thicker than the thickness of the first rigid member (400) and the thickness of each of the second rigid member (500), thereby minimizing the risk of breakage. In addition, the display device (10) according to the present embodiment can minimize the risk of breakage by arranging the third rigid member (600) including the ultra-thin glass lower than the first rigid member (400) and the second rigid member (500).

[0217] The modulus value of the third rigid member (600) may be greater than the modulus values ​​of each of the first rigid member (400) and the second rigid member (500). For example, in one embodiment, the modulus value of the third rigid member (600) may be approximately 20 GPa or more. The display device (10) according to the present embodiment can further enhance the impact resistance of the display device (10) by directly arranging the third rigid member (600) having a modulus value greater than the modulus values ​​of each of the first rigid member (400) and the second rigid member (500) on the display panel (100).

[0218] The display device (10) according to the present embodiment may further include a sixth adhesive member (ADH6).

[0219] The sixth adhesive member (ADH6) may be disposed on the back surface of the third rigid member (600). For example, in one embodiment, the sixth adhesive member (ADH6) may be disposed between the third rigid member (600) and the display panel (100). The third rigid member (600) and the display panel (100) may be coupled to each other through the sixth adhesive member (ADH6).

[0220] The sixth adhesive member (ADH6) may include a transparent adhesive such as a pressure sensitive adhesive (PSA) or an optically clear adhesive (OCA). The sixth adhesive member (ADH6) may include an acrylic adhesive material.

[0221] In some embodiments, the sixth adhesive member (ADH6) may include a dilatant. In the display device (10) according to the present embodiment, since the sixth adhesive member (ADH6) includes a dilatant, the amount of impact applied to the display panel (100) can be minimized, similar to the elastic member (300).

[0222] The thickness (ADH6_H) of the sixth adhesive member (ADH6) may be greater than the respective thicknesses (ADH1_H, ADH_2) of the first adhesive member (ADH1) and the second adhesive member (ADH2). The thickness (ADH6_H) of the sixth adhesive member (ADH6) may be equal to the respective thicknesses (ADH3_H, ADH4_H, ADH5_H) of the third adhesive member (ADH3), the fourth adhesive member (ADH4), and the fifth adhesive member (ADH5). For example, in one embodiment, the thickness (ADH6_H) of the sixth adhesive member (ADH6) may be approximately 75 μm.

[0223] Meanwhile, in some embodiments, the fifth adhesive member (ADH5) disposed between the second reinforcing member (500) and the third reinforcing member (600) may include an adhesive material. For example, in one embodiment, the adhesive strength of the fifth adhesive member (ADH5) may be lower than the adhesive strengths of each of the first adhesive member (ADH1), the second adhesive member (ADH2), the fourth adhesive member (ADH4), the sixth adhesive member (ADH6), and the eighth adhesive member (ADH8).

[0224] Additionally, in some embodiments, the width (ADH5_W) of the fifth adhesive member (ADH5) disposed between the second reinforcing member (500) and the third reinforcing member (600) may be smaller than the respective widths (ADH1_W, ADH2_W, ADH4_W, ADH6_W) of the first adhesive member (ADH1), the second adhesive member (ADH2), the fourth adhesive member (ADH4), and the sixth adhesive member (ADH6).

[0225] In the display device (10) according to the present embodiment, since the adhesive strength of the fifth adhesive member (ADH5) is lower than the adhesive strength of each of the other adhesive members, and the width of the fifth adhesive member (ADH5) is smaller than the width of each of the other adhesive members, the layers arranged on the upper portion of the fifth adhesive member (ADH5) can be relatively easier to attach and detach than the other layers. Accordingly, if some layers of the upper member (UM) are damaged, they can be easily replaced with new layers.

[0226] Fig. 22 is a cross-sectional view showing a display device according to another embodiment. Fig. 23 is a cross-sectional view showing a display device according to another embodiment. Fig. 24 is a cross-sectional view showing a display device according to another embodiment.

[0227] Referring to FIGS. 22 to 24, the display device (10) according to the embodiment of FIGS. 22 to 24 differs from the display device (10) according to the embodiment described with reference to FIGS. 7, 18, and 20 in that each further includes a fourth rigid member (700).

[0228] More specifically, the display device (10) according to the present embodiment may further include a fourth rigid member (700) disposed between the panel member (PM) and the panel support member (800).

[0229] The fourth rigid member (700) can have a shock-absorbing function to protect the display panel (100) from external impact. For example, the fourth rigid member (700) can absorb impact that returns to the display panel (100) due to the reaction of the panel support member (800). Accordingly, the display device (10) can have high shock resistance against external impact.

[0230] The fourth rigid member (700) may include a material having high rigidity and high flexibility. In one embodiment, the fourth rigid member (700) may include at least one of polyethylene terephthalate (PET) and polyimide. In some embodiments, the fourth rigid member (700) may include the same material as the second rigid member (500), but is not limited thereto, and may include different materials.

[0231] In one embodiment, the thickness of the fourth rigid member (700) may be less than the thickness of the first rigid member (400). The thickness of the fourth rigid member (700) may be approximately 50 μm to 90 μm. Preferably, the thickness of the fourth rigid member (700) may be approximately 75 μm. In some embodiments, the fourth rigid member (700) may have the same thickness as the second rigid member (500). The modulus value of the fourth rigid member (700) may be the same as the modulus value of the second rigid member (500).

[0232] In the drawing, the fourth rigid member (700) is depicted as having a single layer, but is not limited thereto. For example, the fourth rigid member (700) may have a multi-layer structure of two or more layers.

[0233] In the display device (10) according to the present embodiment, by arranging at least one of the first reinforcing member (400), the second reinforcing member (500), and the third reinforcing member (600) on the front surface of the display panel (100) and arranging the fourth reinforcing member (700) on the back surface of the display panel (100), the amount of impact applied to the display panel (100) can be further minimized.

[0234] The display device (10) according to the present embodiment may further include a seventh adhesive member (ADH7).

[0235] The seventh adhesive member (ADH7) may be disposed on the back surface of the fourth rigid member (700). For example, in one embodiment, the seventh adhesive member (ADH7) may be disposed between the fourth rigid member (700) and the panel support member (800). The fourth rigid member (700) and the panel support member (800) may be coupled to each other via the seventh adhesive member (ADH7).

[0236] The seventh adhesive member (ADH7) may include a transparent adhesive such as a pressure sensitive adhesive (PSA) or an optically clear adhesive (OCA). The seventh adhesive member (ADH7) may include an acrylic adhesive material.

[0237] The thickness of the seventh adhesive member (ADH7) may be smaller than the respective thicknesses (ADH3_H, ADH4_H, ADH5_H, ADH6_H) of the third adhesive member (ADH3), the fourth adhesive member (ADH4), the fifth adhesive member (ADH5), and the sixth adhesive member (ADH6). The thickness (ADH5_H) of the seventh adhesive member (ADH7) may be the same as the respective thicknesses (ADH1_H, ADH_2) of the first adhesive member (ADH1) and the second adhesive member (ADH2). For example, in one embodiment, the thickness (ADH5_H) of the seventh adhesive member (ADH7) may be approximately 25 μm.

[0238] Although embodiments of the present invention have been described with reference to the attached drawings, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood to be illustrative in all respects and not restrictive.

Claims

1. A display panel including first and second sides facing each other; An elastic member disposed on the first surface; a first rigid member disposed on the elastic member; and Including a panel support member disposed on the second surface, The first rigid member comprises at least one of polyethylene terephthalate (PET), polyimide, and ultra-thin glass (UTG). A display device wherein the elastic member comprises at least one of a dilatant, polyether block amide (PEBA), and thermoplastic polyurethane (TPU).

2. In paragraph 1, Further comprising a second rigid member disposed between the elastic member and the display panel, A display device wherein the second rigid member comprises at least one of polyethylene terephthalate (PET) and polyimide.

3. In paragraph 2, Further comprising a third rigid member arranged between the second rigid member and the display panel, The third rigid member is a display device including ultra-thin glass (UTG).

4. In paragraph 3, A display device wherein the modulus value of the third rigid member is greater than the modulus values ​​of each of the first rigid member and the second rigid member.

5. In paragraph 3, A display device wherein the thickness of the third rigid member is greater than the thickness of the first rigid member, and the thickness of the first rigid member is greater than the thickness of the second rigid member.

6. In paragraph 3, A display device in which the third rigid member and the display panel are joined to each other by an adhesive member.

7. In paragraph 3, Further comprising a fourth rigid member disposed between the display panel and the panel support member, A display device wherein the fourth rigid member comprises at least one of polyethylene terephthalate (PET) and polyimide.

8. In paragraph 1, Further comprising at least one of a first adhesive member disposed between the display panel and the elastic member, and a second adhesive member disposed between the elastic member and the first rigid member, A display device, wherein at least one of the first adhesive member and the second adhesive member includes a dilatant.

9. A display panel including first and second sides facing each other; An elastic member disposed on the first surface; A first rigid member disposed on the elastic member; A panel support member disposed on the second surface; A second rigid member disposed between the elastic member and the display panel; At least one upper adhesive member disposed between any two layers of the display panel, the elastic member, the first rigid member, and the second rigid member; and At least one lower adhesive member disposed between the display panel and the panel support member, A display device wherein the thickness of at least one upper adhesive member is thicker than the thickness of at least one lower adhesive member.

10. In paragraph 9, A display device wherein the thickness of at least one upper adhesive member is two to five times the thickness of at least one lower adhesive member.

11. In paragraph 9, The above upper adhesive member is, A first adhesive member disposed between the display panel and the second rigid member; and Further comprising a second adhesive member disposed between the second rigid member and the elastic member, A display device wherein the width of the second adhesive member is smaller than the width of the first adhesive member.

12. In paragraph 11, A display device wherein the adhesive strength of the second adhesive member is lower than the adhesive strength of the first adhesive member.

13. In paragraph 9, Further comprising a third rigid member arranged between the second rigid member and the display panel, The above upper adhesive member is, A first adhesive member disposed between the display panel and the third rigid member, and Including a second adhesive member disposed between the second rigid member and the third rigid member, A display device wherein the width of the second adhesive member is smaller than the width of the first adhesive member.

14. In paragraph 13, The third rigid member is a display device including ultra-thin glass (UTG).

15. In paragraph 13, Further comprising a fourth rigid member disposed between the display panel and the panel support member, A display device wherein the fourth rigid member comprises at least one of polyethylene terephthalate (PET) and polyimide.

16. A display panel comprising first and second sides facing each other; An elastic member disposed on the first surface; a first rigid member disposed on the elastic member; and Including a panel support member disposed on the second surface, An indicator device in which the modulus value of the first rigid member is greater than the modulus value of the elastic member.

17. In paragraph 16, An indication device wherein the modulus value of the elastic member at room temperature is less than 1 gigapascal (Gpa).

18. In paragraph 16, An indicator device wherein the modulus value of the first rigid member at room temperature is 10 Gpa to 15 Gpa.

19. In Article 16, A display device wherein the first rigid member comprises at least one of polyethylene terephthalate (PET), polyimide, and ultra-thin glass (UTG).

20. In paragraph 16, The above elastic member is a display device including a dilatant.

21. In paragraph 16, A display device wherein the elastic member comprises at least one of polyether block amide (PEBA) and thermoplastic polyurethane (TPU).

22. In paragraph 16, Further comprising a second rigid member disposed between the elastic member and the display panel, A display device wherein the second rigid member comprises at least one of polyethylene terephthalate (PET) and polyimide.

23. In paragraph 16, Further comprising a third rigid member disposed between the elastic member and the display panel, The third rigid member is a display device including ultra-thin glass (UTG).

24. In paragraph 16, Further comprising a fourth rigid member disposed between the display panel and the panel support member, A display device wherein the fourth rigid member comprises at least one of polyethylene terephthalate (PET) and polyimide.

25. In paragraph 16, A display device in which the first surface is a display surface that displays an image.

Images