Display device

Abstract

The present invention relates to a display device including: a display panel including a display area and a non-display area arranged at a periphery of the display area; an impact absorbing layer disposed on the display panel and disposed corresponding to the display area; and an anti-warping layer disposed on the display panel, disposed corresponding to the non-display area, and disposed in at least a partial section along an edge area of the impact absorbing layer.

Description

Technical Field

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

[0002] With the development of the information society, the demand for display devices for displaying images is increasing in various forms. For example, display devices are being applied to various electronic devices such as smartphones, digital cameras, notebook computers, navigation systems, and smart TVs.

[0003] Various display devices are currently in use, including liquid crystal displays (LCDs) and organic light-emitting displays (OLEDs). OLEDs display images using organic light-emitting elements (OLEDs), which generate light through the recombination of electrons and holes. These devices include multiple transistors that supply drive current to the organic light-emitting elements.

[0004] Recently, in order to make display devices lighter, various attempts have been made to minimize the thickness of the display devices.

[0005] Specifically, to achieve lightweight and minimal thickness for display devices, the stacked structure of internal structures is omitted or minimized, or thin substrates are used instead. This weakens the structural strength of the product. As a result, storage conditions (e.g., temperature and humidity) can affect the product's strength, leading to warpage. This warping can also cause the product to curl. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a display device that can prevent warpage of a product without increasing the thickness and can suppress the occurrence of curling caused by the warpage phenomenon.

[0007] The technical problems of the present invention are not limited to the technical problems mentioned above. Ordinary technicians in the technical field to which the present invention belongs can clearly understand other technical problems not mentioned through the following description.

[0008] In order to solve the above technical problems, according to one embodiment, a display device includes: a display panel, including a display area and a non-display area arranged around the display area; an impact absorption layer, arranged on the display panel and set corresponding to the display area; and an anti-warping layer, arranged on the display panel, set corresponding to the non-display area, and set in at least a partial interval along the edge area of ​​the impact absorption layer.

[0009] An upper surface of the impact absorbing layer may be flat.

[0010] The upper surface of the anti-warping layer may be flat.

[0011] The upper surface of the impact absorbing layer and the upper surface of the anti-warping layer may be placed on the same plane.

[0012] The impact absorbing layer is a transparent resin layer, may have the same shape as that of the display area of ​​the display panel, and may overlap with the display area of ​​the display panel.

[0013] The impact absorbing layer may include: a lower surface of the impact absorbing layer, facing the upper surface of the display panel; an upper surface of the impact absorbing layer, serving as the opposite side of the lower surface of the impact absorbing layer; and a side surface of the impact absorbing layer, serving as a peripheral surface arranged along the peripheral direction between the lower surface of the impact absorbing layer and the upper surface of the impact absorbing layer, wherein the side surface of the impact absorbing layer may be connected to the anti-warping layer along the peripheral direction.

[0014] The display device may further include a soft layer provided on at least one of an upper surface of the impact absorbing layer and a lower surface of the impact absorbing layer, wherein the soft layer may have a strength lower than a strength of the impact absorbing layer.

[0015] The soft layer may include: a first soft layer in contact with an upper surface of the impact absorbing layer; and a second soft layer in contact with a lower surface of the impact absorbing layer.

[0016] The second soft layer may be interposed between a lower surface of the impact absorbing layer and the upper surface of the display panel, and the second soft layer may have a strength less than that of the first soft layer.

[0017] The display device may further include: a polarizing member in contact with the upper surface of the impact absorbing layer; and a cover panel provided on the lower surface of the display panel opposite to the upper surface of the display panel.

[0018] The anti-warping layer may have a quadrilateral frame, a circular shape, or an elliptical shape including an empty space therein, and the impact absorbing layer may be accommodated in the empty space of the anti-warping layer.

[0019] The warpage preventing layer may have the same shape as that of the non-display area of ​​the display panel and may overlap with the non-display area.

[0020] The warpage preventing layer may include a resin or a metal having a strength greater than that of the impact absorbing layer.

[0021] The anti-warping layer may include at least one selected from aluminum (Al), carbon fiber reinforced plastic (CFRP), and stainless steel (SUS304).

[0022] The anti-warping layer may include: an inner surface of the anti-warping layer, which is connected to the side surface of the impact absorbing layer along the peripheral direction; and an outer surface of the anti-warping layer, which is the opposite side of the inner surface of the anti-warping layer and is arranged at the outermost contour, wherein the outer surface of the outermost contour of the display panel and the outer surface of the anti-warping layer can be arranged to be aligned on the same line along a vertical direction perpendicular to the upper surface of the display panel.

[0023] The display device may further include: a soft layer, which is arranged on at least one of the upper surface of the impact absorbing layer and the lower surface of the impact absorbing layer, and has a strength less than the strength of the impact absorbing layer, wherein the anti-warping layer may include: an anti-warping layer upper surface, which is arranged on the upper part of the inner surface of the anti-warping layer and the outer surface of the anti-warping layer; and an anti-warping layer lower surface, which is the opposite surface of the anti-warping layer upper surface, wherein at least one of the inner surface of the anti-warping layer, the upper surface of the anti-warping layer and the lower surface of the anti-warping layer may be in contact with the soft layer.

[0024] In order to solve the other technical problem mentioned above, a display device according to one embodiment includes: a display panel, including a first area and a second area arranged adjacent to the first area; a resin layer, arranged on the first area of ​​the display panel and having a first strength; and a frame layer, arranged on the second area of ​​the display panel and having a second strength greater than the first strength.

[0025] The second intensity may be 5 to 50 times greater than the first intensity.

[0026] The frame layer may include a metal frame with a hollow interior, wherein the metal frame may have a width of 1 mm to 10 mm.

[0027] The resin layer and the frame layer may at least partially contact each other.

[0028] Details of other embodiments are included in the detailed description and accompanying drawings.

[0029] According to a display device of an embodiment, warpage of a product can be prevented without increasing the thickness, and curling caused by the warpage phenomenon can be suppressed.

[0030] Effects according to the embodiment are not limited to the above-exemplified contents, and include more diverse effects in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is an exploded perspective view of a display device according to an embodiment.

[0032] Figure 2 yes Figure 1 A plan view of the display panel.

[0033] Figure 3 It is schematically shown Figure 2 A cross-sectional view of the structure of a display panel.

[0034] Figure 4 It is magnified Figure 3 A cross-sectional view of the stacking structure of a display panel.

[0035] Figure 5 yes Figure 1 Combined stereogram.

[0036] Figure 6 It is along Figure 5 Cross-sectional view taken along line XX.

[0037] Figure 7 yes Figure 5 Upper plan view.

[0038] Figure 8 is a cross-sectional view of a display device according to another embodiment.

[0039] Figures 9 to 23 and Figures 30 to 34 is a cross-sectional view of a display device according to yet another embodiment, Figures 24 to 29 is a plan view of a display device according to yet another embodiment.

[0040] Description of Reference Numerals 1: Display device 100: Display panel 200: Cover panel 300: Polarizing component 400: Impact absorbing layer 500: Anti-warping layer DETAILED DESCRIPTION

[0041] The advantages and features of the present invention, as well as methods for achieving these advantages and features, will become apparent with reference to the accompanying drawings and the embodiments described in detail below. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in a variety of different forms. These embodiments are provided solely to complete the disclosure of the present invention and to fully inform those having ordinary knowledge in the technical field to which the present invention belongs of the scope of the invention.

[0042] When an element or layer is referred to as being “on” another element or layer, it includes all cases where the element or layer is immediately above the other element or layer or has other layers or elements interposed therebetween. Throughout the specification, the same reference numerals denote the same constituent elements.

[0043] Although terms such as "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, within the technical concept of the present invention, the first component mentioned below can also be the second component.

[0044] Each feature of the multiple embodiments of the present invention can be partially or completely combined or combined with each other, and can be technically linked and driven in various ways. The various embodiments can be implemented independently of each other, or can be implemented together in an associated relationship.

[0045] Hereinafter, specific embodiments will be described with reference to the accompanying drawings.

[0046] Figure 1 is an exploded perspective view of a display device according to an embodiment.

[0047] Display device 1 may refer to any electronic device that provides a display screen. For example, mobile phones, smartphones, tablet personal computers (PCs), electronic watches, smart watches, watch phones, mobile communication terminals, electronic organizers, e-books, portable multimedia players (PMPs), navigation systems, game consoles, digital cameras, televisions, laptops, netbooks, monitors, billboards, and the like that provide a display screen may be included in display device 1.

[0048] Reference Figure 1 The display device 1 may include a display panel 100 , an impact absorbing layer 400 disposed on the display panel 100 , and an anti-warping layer 500 located in an edge region of the impact absorbing layer 400 .

[0049] The display panel 100 includes: a display panel upper surface 102 facing the impact absorption layer 400 and the anti-warping layer 500; a display panel lower surface 101, which is the opposite side of the display panel upper surface 102; and a display panel side surface 103, which is arranged between the display panel upper surface 102 and the display panel lower surface 101 and is arranged at the outermost contour of the outer peripheral surface of the display panel 100.

[0050] The display panel upper surface 102 may be a surface that displays an image, and the display panel lower surface 101 may be a surface opposite the display panel upper surface 102. In one embodiment, the display panel 100 may be a front-surface display panel that displays only to the display panel upper surface 102, and the following embodiments are illustrative examples, but are not limited thereto. That is, the display panel 100 may be a rear-surface display panel that displays to the display panel lower surface 101, or may be a double-sided display panel that displays to both the display panel upper surface 102 and the display panel lower surface 101.

[0051] The shock absorbing layer 400 is disposed on the display panel upper surface 102. The shock absorbing layer 400 can prevent external shocks from being transmitted to the display panel 100 or disperse internal shocks. The shock absorbing layer 400 can overlap a display screen corresponding to a display area DA of the display panel 100, which will be described later, and can be transparent so as not to block the display screen.

[0052] The anti-warpage layer 500 is disposed around the impact-absorbing layer 400. The anti-warpage layer 500 may share a common plane with the impact-absorbing layer 400. For example, the anti-warpage layer 500 may be the same layer as the impact-absorbing layer 400. That is, the layer on which the impact-absorbing layer 400 is disposed and the layer on which the anti-warpage layer 500 is disposed may be the same layer. For example, like the impact-absorbing layer 400, the anti-warpage layer 500 may be disposed on the upper surface 102 of the display panel.

[0053] The anti-warping layer 500 may at least partially surround the impact-absorbing layer 400 in a planar manner. The anti-warping layer 500 overlaps the display panel 100 in the thickness direction. However, the anti-warping layer 500 may primarily overlap the non-display area NDA of the display panel 100, which will be described later. Various variations are possible. Various positional relationships of the anti-warping layer 500 will be described later.

[0054] Figure 2 yes Figure 1 A plan view of the display panel.

[0055] Reference Figure 2 The display panel 100 may have a rectangular shape in a plane, but is not limited thereto and may be variously deformed into a square, a diamond, other polygons, a circle, an ellipse, etc. according to the application field.

[0056] When the display panel 100 is distinguished based on whether or not an image is displayed, the display panel 100 may include a display area DA that displays an image and a non-display area NDA that does not display an image. The non-display area NDA may be disposed around the display area DA and may at least partially or completely surround the display area DA.

[0057] The display panel 100 may include one or more light sources that provide light. For example, the display panel 100 may be a light receiving panel including an external light source, or may be a self-luminous panel including an internal light-emitting element. The self-luminous panel includes a plurality of light-emitting elements. Examples of light-emitting elements include organic light-emitting diodes (OLEDs), quantum dot light-emitting diodes (QDs), inorganic-based micro-LEDs (e.g., micro-LEDs), inorganic-based nano-LEDs (e.g., nano-LEDs), and the like. Below, for ease of explanation, an example of using an organic light-emitting element as a light-emitting element is shown, but the present invention is not limited thereto.

[0058] Figure 3 It is schematically shown Figure 2 A cross-sectional view of the structure of a display panel, Figure 4 It is magnified Figure 3 A cross-sectional view of the stacking structure of a display panel.

[0059] Reference Figure 3 The display panel 100 may include a base substrate 110 , a driving layer 120 , a light emitting element layer 130 and an encapsulation layer 140 .

[0060] Reference Figure 4 The base substrate 110 provides space for the driver layer 120, the light-emitting element layer 130, and the encapsulation layer 140. The base substrate 110 may be a flexible substrate and may be formed using a flexible polymer material. For example, the base substrate 110 may be made of a flexible plastic such as polyimide, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyarylate, polyetherimide, and polyethersulfone. As another example, the base substrate 110 may also be a rigid substrate such as glass, a semiconductor substrate, or a quartz substrate.

[0061] The driving layer 120 includes elements for providing signals to the light-emitting element layer 130. The driving layer 120 may include various signal lines, such as scan lines (not shown), data lines (not shown), power lines (not shown), and light-emitting lines (not shown). The driving layer 120 may include multiple transistors and capacitors. The transistors may include a switching transistor (not shown) and a driving transistor Qd provided in each pixel (not shown).

[0062] The light emitting element layer 130 may include a light emitting element LD, and the light emitting element LD may include a first electrode AE, an organic layer OL, and a second electrode CE.

[0063] The light emitting element layer 130 may further include a pixel definition film PDL disposed on the protective film 230. The pixel definition film PDL may include an opening exposing the first electrode AE ​​and may define the light emitting area LTA on a plane.

[0064] The encapsulation layer 140 may be disposed on an upper portion of the light emitting element layer 130. The encapsulation layer 140 may block the light emitting element layer 130 from external moisture and oxygen.

[0065] The encapsulation layer 140 may be a thin film encapsulation layer and may include one or more organic films and one or more inorganic films. For example, the encapsulation layer 140 may include a first inorganic film 141 disposed on the second electrode CE, an organic film 145 disposed on the first inorganic film 141 , and a second inorganic film 143 disposed on the organic film 145 .

[0066] Figure 5 yes Figure 1 The combined stereogram, Figure 6 It is along Figure 5 The cross-sectional view taken along line XX, Figure 7 yes Figure 5 Upper plan view.

[0067] Reference Figure 4 and Figure 5 , the impact absorbing layer 400 may be arranged on the upper surface 102 of the display panel. In one embodiment, the impact absorbing layer 400 may be arranged immediately above the upper surface 102 of the display panel. That is, the lower surface of the impact absorbing layer 400 may be in direct contact with the upper surface 102 of the display panel. The layer or material that is in direct contact with the lower surface of the impact absorbing layer 400 is related to the layer or material that constitutes the upper surface (i.e., the uppermost surface) of the display panel 100. For example, Figure 4As shown, when the uppermost surface of the display panel 100 is the upper surface of the encapsulation layer 140 (in other words, the upper surface 143 a of the second inorganic film 143 ), the impact absorbing layer 400 may be disposed immediately above the upper surface 143 a of the second inorganic film 143 of the encapsulation layer 140 . However, the present invention is not limited thereto, and a separate layer may be interposed between the lower surface of the impact absorbing layer 400 and the display panel upper surface 102 .

[0068] Reference Figure 6 The area of ​​the lower surface of the impact absorbing layer 400 that contacts the upper surface 102 of the display panel may be Figure 6 That is, the lower surface 402 of the impact absorbing layer may partially contact the upper surface 102 of the display panel, or the entire lower surface 402 of the impact absorbing layer may contact the upper surface 102 of the display panel.

[0069] In some embodiments, the impact absorbing layer 400 may overlap the display area DA of the display panel 100 in the thickness direction of the display panel 100. Figure 6 The impact absorbing layer 400 may overlap the display area DA of the display panel 100 in a direction perpendicular to the upper surface 102 of the display panel.

[0070] When an external impact is applied to the display area DA of the display panel 100, the impact absorbing layer 400 may protect the display area DA by absorbing the external impact at a position overlapping with the display area DA, thereby preventing the impact from being transmitted to the display area DA. In other words, the impact absorbing layer 400 may have impact resistance characteristics.

[0071] by Figure 6 Based on the cross-sectional view, the impact absorbing layer 400 may include a lower surface 402 of the impact absorbing layer facing the upper surface 102 of the display panel, an upper surface 401 of the impact absorbing layer opposite to the lower surface 402 of the impact absorbing layer, and side surfaces 403 and 404 of the impact absorbing layer arranged between the lower surface 402 of the impact absorbing layer and the upper surface 401 of the impact absorbing layer and facing the anti-warping layer 500.

[0072] exist Figure 6The impact absorbing layer side surfaces 403 and 404 are shown as including a first impact absorbing layer side surface 403 disposed on the left side of the figure and a second impact absorbing layer side surface 404 disposed on the right side. In the following description, for convenience, the first impact absorbing layer side surface 403 is referred to as the "impact absorbing layer side surface 403," and the description is similarly applicable to the second impact absorbing layer side surface 404. As another example, when the impact absorbing layer 400 has a hollow shape that exposes a portion of the display panel 100, the impact absorbing layer side surfaces may include an inner surface facing the display area DA and an outer surface facing outward, which is opposite to the inner surface. In this case, the outer surface is in direct contact with the inner surface 503 of the anti-warping layer.

[0073] The impact-absorbing layer side surfaces 403 and 404 may constitute four peripheral surfaces facing the anti-warping layer 500 along the peripheral direction of the impact-absorbing layer 400. If the impact-absorbing layer 400 is a quadrilateral, the impact-absorbing layer 400 may include four impact-absorbing layer side surfaces 403 and 404, but the present invention is not limited thereto. If the impact-absorbing layer 400 is circular, the impact-absorbing layer side surfaces 403 and 404 may also include one peripheral surface. If the impact-absorbing layer 400 is polygonal, the impact-absorbing layer side surfaces 403 and 404 may be equal in number to the peripheral surfaces of the polygon.

[0074] by Figure 6 While the cross-sectional view of FIG. 4 is used as a reference, the case where a pair of the four shock-absorbing layer side surfaces 403, 404 has the same shape is shown, but the present invention is not limited thereto. The shapes of the four shock-absorbing layer side surfaces 403, 404 may all be the same, or the shape of at least one of the four shock-absorbing layer side surfaces 403, 404 may be different.

[0075] The side surface 403 of the impact absorbing layer may be in direct contact with the inner surface 503 of the anti-warping layer described later in the boundary area between the display area DA and the non-display area NDA, or a separate layer may be sandwiched between the side surface 403 of the impact absorbing layer and the inner surface 503 of the anti-warping layer.

[0076] As described above, the impact absorbing layer side surface 403 may be in direct contact with the anti-warpage layer inner surface 503, or may be in indirect contact with the anti-warpage layer inner surface 503 by interposing a separate layer, or a gap may be included between the impact absorbing layer side surface 403 and the anti-warpage layer inner surface 503 so that the impact absorbing layer side surface 403 and the anti-warpage layer inner surface 503 are not in direct contact. Figure 6As a reference to the cross-sectional view, a pair of gaps may be located between a pair of impact absorbing layer side surfaces 403 and a pair of anti-warping layer inner surfaces 503 , or a gap may be located between one impact absorbing layer side surface 403 and one anti-warping layer inner surface 503 .

[0077] At least one surface of the impact absorbing layer side surface 403 may be in contact with the inner surface 503 of the anti-warping layer. For example, the impact absorbing layer side surface 403 may be partially in contact with the inner surface 503 of the anti-warping layer, or the entire surface of the impact absorbing layer side surface 403 may be in contact with the inner surface 503 of the anti-warping layer.

[0078] Regarding the upper surface 401 of the impact absorbing layer, in the thickness direction of the display panel 100, the height of the upper surface 401 of the impact absorbing layer can be the same as the height of the anti-warping layer 500, but is not limited thereto. The height of the upper surface 401 of the impact absorbing layer can be less than or greater than the height of the anti-warping layer 500.

[0079] In cross section, the upper surface 401 of the impact absorbing layer may have a straight line shape with a flat surface, or may have a curved shape, or may have an irregular surface roughness.

[0080] Reference Figure 7 , the impact absorbing layer 400 may have an area smaller than the total area of ​​the display panel 100 , for example, the impact absorbing layer 400 may have the same area as the display area DA in the same shape as the display area DA and cover the display area DA in the central area of ​​the display panel 100 .

[0081] The shock absorbing layer 400 may have a rectangular shape corresponding to the shape of the display area DA of the display panel 100 , but is not limited thereto. The shock absorbing layer 400 may be variously changed into corresponding shapes according to the shape of the display panel 100 .

[0082] The impact absorbing layer 400 can be applied in various ways as long as it is a transparent material that can provide impact resistance and transmit light. That is, when it contains a transparent material that provides impact resistance and transmits light, even a layer with other functions besides impact absorption can be called an impact absorbing layer 400. Examples of such an impact absorbing layer 400 include window films, window resins, optical adhesive resins, optical adhesive films, functional electronic films, optical films, etc. Examples of the functional electronic films include touch films, fingerprint sensing films, etc. Examples of the optical films include polarizing films, anti-reflection films, anti-fingerprint films, viewing angle control films, etc. The films, layers, etc. can constitute the impact absorbing layer 400 alone, or can be composed of two or more films or layers stacked to constitute the impact absorbing layer 400.

[0083] In one embodiment, the impact absorbing layer 400 may include a light-curable resin or a thermosetting resin. For example, the impact absorbing layer 400 may include at least one of polyester acrylate, epoxy acrylate, polyurethane acrylate, polyether acrylate, silicone acrylate, alicyclic epoxy resin, glycidyl ether epoxy resin, epoxy acrylate, and vinyl ether.

[0084] The impact-absorbing layer 400 can be formed by preparing the anti-warping layer 500 in a frame and placing it on the display panel 100. Then, a filler liquid for forming the impact-absorbing layer can be filled into the frame using a slit coating, dispensing, or inkjet method. However, this is not limiting and the anti-warping layer 500 can also be manufactured in a film form and housed within the anti-warping layer 500.

[0085] For example, the modulus of the impact absorbing layer 400 may be 0.1 MPa to 50 GPa, preferably, 1 GPa to 10 GPa. However, it is not limited thereto.

[0086] The thickness of the impact absorbing layer 400 may be 10 μm to 1000 μm, and preferably 50 μm to 300 μm, but is not limited thereto.

[0087] If the thickness of the impact absorbing layer 400 is 50 μm or more, the strength of the product can be increased and the impact resistance can be improved. If the thickness of the impact absorbing layer 400 is 300 μm or less, the overall thickness of the product can be reduced.

[0088] In addition, refer to Figure 4 and Figure 5 The anti-warping layer 500 may be disposed on the display panel upper surface 102. In one embodiment, the anti-warping layer 500 may be disposed immediately above the display panel upper surface 102. That is, the lower surface of the anti-warping layer 500 may be in direct contact with the display panel upper surface 102.

[0089] The layer or substance that is in direct contact with the lower surface of the anti-warping layer 500 is related to the layer or substance that constitutes the upper surface 102 (ie, the uppermost surface) of the display panel 100. For example, Figure 4 As shown, when the uppermost surface of the display panel 100 is the upper surface of the encapsulation layer 140 (in other words, the upper surface 143 a of the second inorganic film 143 ), the impact absorbing layer 400 can be disposed immediately above the upper surface 143 a of the second inorganic film 143 of the encapsulation layer 140 . However, the present invention is not limited thereto, and a separate layer may be interposed between the lower surface of the anti-warping layer 500 and the upper surface 102 of the display panel.

[0090] Reference Figure 6The area of ​​the lower surface of the anti-warping layer 500 that contacts the display panel upper surface 102 may be the entire anti-warping layer lower surface 502, which will be described later, or may be a portion thereof. That is, the anti-warping layer lower surface 502 may partially contact the display panel upper surface 102, or the entire anti-warping layer lower surface 502 may contact the display panel upper surface 102.

[0091] In some embodiments, the anti-warping layer 500 may overlap the non-display area NDA of the display panel 100 in the thickness direction of the display panel 100. Figure 6 As a reference to the cross-sectional view of , the anti-warping layer 500 may overlap with the non-display area NDA of the display panel 100 in a direction perpendicular to the upper surface 102 of the display panel.

[0092] The anti-warping layer 500 has a high-strength rectangular frame shape with a hollow interior, and the side surfaces 503 and 504 of the anti-warping layer are arranged along the outer peripheral surface of the impact-absorbing layer 400, thereby preventing warpage of the product at the periphery of the impact-absorbing layer 400 and suppressing curling caused by warpage (i.e., deformation such as twisting).

[0093] by Figure 6 Based on the cross-sectional view, the anti-warping layer 500 may include a lower surface 502 of the anti-warping layer facing the upper surface 102 of the display panel, an upper surface 501 of the anti-warping layer as the opposite side of the lower surface 502 of the anti-warping layer, and side surfaces 503 and 504 of the anti-warping layer arranged between the lower surface 502 of the anti-warping layer and the upper surface 501 of the anti-warping layer and facing the side surface 403 of the impact absorbing layer.

[0094] The side surfaces 503 and 504 of the anti-warping layer may include: an inner surface 503 of the anti-warping layer, located at the boundary between the display area DA and the non-display area NDA, and facing the side surface 403 of the impact absorbing layer; and an outer surface 504 of the anti-warping layer, which is the opposite side of the inner surface 503 of the anti-warping layer and faces outward.

[0095] by Figure 6 As a reference, the inner surface 503 of the anti-warping layer may include a straight line perpendicular to the lower surface 502 of the anti-warping layer, or may include an oblique line inclined relative to the lower surface 502 of the anti-warping layer.

[0096] If the inner surface 503 of the anti-warping layer is located at the boundary between the display area DA and the non-display area NDA, then Figure 6 and Figure 7 As shown, the anti-warping layer 500 may overlap with the non-display area NDA, but is not limited thereto. The inner surface 503 of the anti-warping layer may be located in the display area DA, or may be located in the non-display area NDA.

[0097] by Figure 6 As a reference to the cross-sectional view of , the outer surface 504 of the anti-warping layer may include the same straight line as the inner surface 503 of the anti-warping layer, or may include an oblique line inclined in the same direction or the opposite direction to the inner surface 503 of the anti-warping layer.

[0098] Taking the vertical connection line connecting the outer surface 504 of the anti-warping layer and the side surface 103 of the display panel along the thickness direction of the display panel 100 as a reference, if the outer surface 504 of the anti-warping layer and the side surface 103 of the display panel are as follows: Figure 6 are arranged on the same line, then Figure 7 As shown, the anti-warping layer 500 can overlap with the non-display area NDA, but is not limited thereto. The outer surface 504 of the anti-warping layer can also be arranged to be outwardly separated from the vertical connection line so that a portion of the anti-warping layer 500 protrudes toward the outer contour of the display panel side surface 103.

[0099] As described above, the outer surface 504 of the anti-warping layer can be arranged on the same line as the display panel side surface 103 in the non-display area NDA, but is not limited to this. The outer surface 504 of the anti-warping layer can be located at the boundary of the display area DA and the non-display area NDA, or can be located within the display area DA.

[0100] by Figure 6 As a reference to the cross-sectional view of , the upper surface 501 of the anti-warping layer can be a straight line with a flat surface, or can be a curved shape, or can have an irregular surface roughness.

[0101] Taking the horizontal connecting line connecting the upper surface 501 of the anti-warping layer and the upper surface 401 of the impact absorbing layer in a direction perpendicular to the vertical connecting line as a reference, the upper surface 501 of the anti-warping layer and the upper surface 401 of the impact absorbing layer can be as follows: Figure 6 As shown, the upper surface 501 of the anti-warpage layer and the upper surface 401 of the impact-absorbing layer are located on the same line, so that the upper surface 501 of the anti-warpage layer and the upper surface 401 of the impact-absorbing layer can form a flat surface together, but the present invention is not limited thereto. The upper surface 501 of the anti-warpage layer can be located below or above the horizontal connecting line, so that the upper surface 501 of the anti-warpage layer is arranged to form a step with the upper surface 401 of the impact-absorbing layer.

[0102] The anti-warping layer lower surface 502 can be disposed on the display panel upper surface 102. As an example, it can be disposed in the same manner as the impact absorbing layer 400 (e.g., disposed immediately above the display panel upper surface 102), but is not limited thereto. Alternatively, a separate layer can be interposed between at least one of the anti-warping layer lower surface 502 and the impact absorbing layer lower surface 402 and the display panel upper surface 102.

[0103] Reference Figure 7The anti-warping layer 500 may have the same area as the non-display area NDA in the same shape as the non-display area NDA and cover the non-display area NDA in the edge region of the display panel 100 .

[0104] Since the anti-warping layer 500 is arranged at a position corresponding to the non-display area NDA, it can prevent the product from bending without affecting the display pixels (ie, without obstructing the image display path for the user to see the image).

[0105] The anti-warping layer 500 may be a rectangular frame corresponding to the shape of the non-display area NDA of the display panel 100 , but is not limited thereto and may be variously changed to corresponding shapes according to the shape of the display panel 100 .

[0106] The anti-warping layer 500 can be Figure 6 The cross section may have a quadrilateral cross section shape as a reference, or may have a polygonal cross section shape other than a quadrilateral or a semicircular cross section shape.

[0107] Reference Figure 7 The anti-warping layer 500 may have a rectangular frame shape with an empty interior, and the empty space inside the anti-warping layer 500 may accommodate the impact absorbing layer 400. The internal space of the anti-warping layer 500 may have a size corresponding to that of the impact absorbing layer 400 so as to be able to accommodate the impact absorbing layer 400.

[0108] The anti-warpage layer 500 may be provided around the impact-absorbing layer 400 while accommodating the impact-absorbing layer 400 therein, and the anti-warpage layer 500 may surround the impact-absorbing layer 400. For example, the anti-warpage layer 500 may be provided in an edge region of the impact-absorbing layer 400 while in contact with the outer peripheral surface of the impact-absorbing layer 400.

[0109] The anti-warping layer 500 may be a high-strength frame having high strength to prevent warping and suppress the occurrence of curling. In addition, the anti-warping layer 500 may contain black pigment or use metal in the plastic resin to prevent light leakage and light reflection.

[0110] The warpage prevention layer 500 may be made of various materials as long as the materials are stronger than the impact absorbing layer 400 and do not transmit light.

[0111] The strength of the anti-warpage layer 500 may be greater than that of the impact-absorbing layer 400, and the modulus of the anti-warpage layer 500 may be relatively greater than that of the impact-absorbing layer 400. For example, the modulus of the anti-warpage layer 500 may be 5 to 50 times greater than that of the impact-absorbing layer 400, but is not limited thereto.

[0112] The modulus of the anti-warping layer 500 may be 50 GPa to 200 GPa, but is not limited thereto.

[0113] If the modulus of the anti-warpage layer 500 is 50 GPa or more, in the event of a warpage phenomenon (for example, when deformation such as twisting occurs), the non-display area NDA, which is an edge area of ​​the display panel 100, can be fixed to prevent twisting by reinforcing the structural strength of the product.

[0114] If the modulus of the anti-warping layer 500 is 200 GPa or less, as a high-strength material, it can provide strong support to secure the product in the non-display area (NDA), which is the edge area of ​​the display panel 100, thereby effectively suppressing product warping. The larger the modulus value, the stronger the support to suppress deformation.

[0115] The anti-warping layer 500 may include, for example, one or more selected from aluminum (Al), carbon fiber reinforced plastic (CFRP), and stainless steel (SUS304).

[0116] The modulus of aluminum (Al) can be above 69 GPa, the modulus of carbon fiber reinforced plastic (CFRP) can be 75 GPa, the modulus of titanium (Ti) can be 116 GPa, and the modulus of stainless steel (SUS304) can be 190 GPa.

[0117] The width of the anti-warping layer 500 may be 1 mm to 10 mm, preferably 1 mm to 3 mm or less, but is not limited thereto.

[0118] If the width of the warp prevention layer 500 is 1 mm or greater, the warp prevention layer 500 can provide excellent curl control, and if the width of the warp prevention layer 500 is 10 mm or less, the warp prevention layer 500 can have a narrower width, thereby reducing the material cost of the warp prevention layer 500. The wider the width, the better the curl control.

[0119] The width of the anti-warping layer 500 may have the same width along the circumferential direction, but is not limited thereto. Figure 7 Taking the upper plan view of FIG as a reference, in the warpage prevention layer 500 composed of four sides including a pair of short sides and a pair of long sides, the width of the warpage prevention layer 500 may be different in at least one of the four sides.

[0120] like Figure 6 and Figure 7As shown, the warp-preventing layer 500 with this configuration is arranged overlapping the non-display area NDA, with the impact-absorbing layer 400 housed in its internal empty space (i.e., the layer 500 is in contact with the impact-absorbing layer side surface 404 along the circumferential direction, supporting the edge region of the impact-absorbing layer 400). Therefore, the warp-preventing layer 500 securely supports the impact-absorbing layer 400 in its edge region. This prevents the impact-absorbing layer 400 from shifting position when an external shock is applied to the product, absorbing the impact and protecting the product. Specifically, because the impact-absorbing layer 400 overlaps the display area DA, it absorbs the external shock. In particular, the warp-preventing layer 500 securely supports the impact-absorbing layer 400 in its position, preventing the external shock from being transmitted to the display area DA.

[0121] Furthermore, the anti-warp layer 500 is positioned so as to overlap the non-display area NDA, while housing the impact-absorbing layer 400 within the empty space within. Therefore, when an external impact is applied to the product or when the product is about to twist due to storage temperature, specifically when force is concentrated in the center of the display area DA of the display panel 100, the high-strength anti-warp layer 500 can be secured and supported within the non-display area NDA corresponding to the outer periphery of the display panel 100, thereby suppressing warping, such as twisting, of the product. Furthermore, when curling is about to occur due to twisting, the anti-warp layer 500, located within the outer periphery of the display panel 100, can disperse the twisting force throughout the outer periphery of the display panel 100, thereby preventing the product from curling. Thus, since the anti-warp layer 500 is located within the non-display area NDA corresponding to the outer periphery of the display panel 100, when warping occurs and force is concentrated, the high-strength anti-warp layer 500 can provide support at the edges, preventing the product from curling toward the center.

[0122] Other embodiments are described below.

[0123] Figure 8 is a cross-sectional view of a display device according to another embodiment.

[0124] Figure 8 An example is shown in Figure 6 Other layers or components may be added to the upper and / or lower part of the display device.

[0125] Reference Figure 8 , display device 1_1 and Figure 6 The difference between the embodiment of the present invention and the embodiment of the present invention is that it further includes a polarizing component 300 disposed on the upper portion of the display panel 100 and a cover panel 200 disposed on the lower surface 101 of the display panel.

[0126] Specifically, the cover panel 200 may be disposed on the lower surface 101 of the display panel, and may protect the display panel 100 from below.

[0127] The cover panel 200 may include a buffering protective layer that absorbs impact and a metal layer that performs heat dissipation and shields electromagnetic waves.

[0128] The cover panel 200 may include both the buffer protection layer and the metal layer and be composed of two layers, but may also be composed of only one layer selected from the buffer protection layer and the metal layer.

[0129] The polarizing component 300 can be composed of a polarizing plate that only allows light in the same direction as the pattern to pass through and does not allow light in different directions to escape. The polarizing component 300 can be disposed on the impact absorbing layer 400 and the anti-warping layer 500, and can improve the light-to-dark ratio by presenting true black, and can also play a role in reducing external light reflection or controlling transmittance.

[0130] The polarizing member 300 may further include at least one functional layer selected from the group consisting of a hard coating layer, an anti-reflection (AR) coating layer, and an anti-glare (AG) coating layer.

[0131] The impact absorbing layer 400 may be interposed between the lower surface of the polarizing member 300 and the display panel upper surface 102 in the display area DA.

[0132] The anti-warping layer 500 can be set in the non-display area NDA, can be arranged in the edge area of ​​the impact absorbing layer 400 in a manner aligned on the same plane as the impact absorbing layer 400, and can be sandwiched between the lower surface of the polarizing component 300 and the display panel upper surface 102.

[0133] Even in the case of this embodiment, since the polarizing component 300 is located above the impact-absorbing layer 400 and the anti-warping layer 500, when warping occurs in the product (for example, curling occurs in the polarizing component due to warping), the anti-warping layer 500 can suppress the occurrence of warping at the bottom of the polarizing component 300 and suppress the occurrence of curling caused by the warping.

[0134] Furthermore, in this embodiment, a cover panel 200 is further provided on the lower surface 101 of the display panel, so that when an external impact occurs at the lower portion of the display panel 100 , the cover panel 200 can protect the display panel 100 from such external impact.

[0135] Figure 9 is a cross-sectional view of a display device according to yet another embodiment.

[0136] Figure 9 The shape of the impact absorbing layer 400_1 can be deformed. Figure 9According to the display device 1_2 of this embodiment, Figure 5 The difference between the embodiment of FIG. 4 and FIG. 5 is that the impact absorbing layer 400_1 covers the upper surface of the anti-warping layer 500 .

[0137] Specifically, Figure 9 A portion of the impact absorbing layer 400_1 may be accommodated in the anti-warping layer 500 , and the remaining portion of the impact absorbing layer 400_1 may be configured to extend from the portion and cover the upper surface of the anti-warping layer 500 in the non-display area NDA.

[0138] In this embodiment, the shock absorbing layer 400_1 covers the upper surface of the anti-warping layer 500 , thereby increasing the contact area between the shock absorbing layer 400_1 and the anti-warping layer 500 , thereby improving the bonding between the shock absorbing layer 400_1 and the anti-warping layer 500 .

[0139] Figure 10 and Figure 11 is a cross-sectional view of a display device according to yet another embodiment.

[0140] Figure 10 and Figure 11 The surface shape of the impact absorbing layers 400_2 and 400_3 of the display devices 1_3 and 1_4 according to this embodiment is different from the flat shape. Figure 5 The embodiments are different, such as Figure 10 As shown, the surface shape of the impact absorbing layer 400_2 may also have a curved shape protruding in the thickness direction of the display panel 100. Figure 11 As shown, the surface shape of the impact absorbing layer 400_3 may also have a curved shape that is concave in the thickness direction of the display panel 100. In this way, even if the surface shapes of the impact absorbing layers 400_2 and 400_3 are uneven, the display panel 100 can be protected from the impact applied to the product.

[0141] In the present embodiment, since the surfaces of the impact absorbing layers 400_2 and 400_3 may have a protruding shape or a concave shape, they may also function as lenses capable of adjusting the angle of light.

[0142] Figure 12 is a cross-sectional view of a display device according to yet another embodiment.

[0143] and Figure 6 The side surfaces 403 and 404 of the impact absorbing layer and the inner surface 503 of the anti-warping layer are in surface contact with each other along a straight line in a direction perpendicular to the upper surface 102 of the display panel. In the display device 1_5 according to this embodiment, as shown in FIG. Figure 12 As shown, the two components can also be combined by separate combining devices 601 and 602.

[0144] Reference Figure 12 ,and Figure 6 The difference of the embodiment is that it further includes bonding devices 601 and 602 for bonding the impact absorbing layer 400_4 and the anti-warping layer 500_1.

[0145] Specifically, the coupling devices 601 and 602 may include a coupling groove 602 provided in the impact-absorbing layer 400_4 and a coupling protrusion 601 provided in the anti-warping layer 500_1 and received in the coupling groove 602. However, the present invention is not limited thereto; the coupling protrusion 601 may be provided in the impact-absorbing layer 400_4 and the coupling groove 602 may be provided in the anti-warping layer 500_1.

[0146] The coupling groove 602 and coupling protrusion 601 can also be pre-formed in the impact-absorbing layer 400_4 and the anti-warping layer 500_1, respectively, and then interlocked and coupled. For example, the film-shaped impact-absorbing layer 400_4 having the coupling groove 602 can be inserted into the interior space of the anti-warping layer 500_1, thereby inserting the coupling protrusion 601 of the anti-warping layer 500_1 into the coupling groove 602 of the film-shaped impact-absorbing layer 400_4.

[0147] The present invention is not limited thereto. Alternatively, the anti-warping layer 500_1 having the coupling protrusions 601 may be disposed on the display panel 100 , and the inner space of the anti-warping layer 500_1 having a hollow quadrangular frame shape may be filled with a coating liquid for forming a shock absorbing layer.

[0148] In the case of this embodiment, as the coupling protrusion 601 is received in the coupling groove 602, the coupling force between the impact absorbing layer 400_4 and the anti-warping layer 500_1 is improved, so that they can firmly support each other to prevent the position deviation of the impact absorbing layer 400_4 and the anti-warping layer 500_1 when an impact is generated by an external force.

[0149] Figure 13 is a cross-sectional view of a display device according to yet another embodiment.

[0150] Reference Figure 13 According to the display device 1_6 of this embodiment, Figure 6 The difference between the embodiment of FIG. 4 and FIG. 5 is that the upper surface of the impact absorbing layer 400_5 is configured to form a step with the upper surface of the anti-warping layer 500 .

[0151] Specifically, if Figure 13 As shown, the height from the lower surface of the impact-absorbing layer 400-5 to the upper surface of the impact-absorbing layer 400-5 may be less than the height from the lower surface of the anti-warping layer 500 to the upper surface of the anti-warping layer 500. However, the present invention is not limited thereto, and the height of the upper surface of the impact-absorbing layer 400-5 may be greater than the height of the upper surface of the anti-warping layer 500.

[0152] In the present embodiment, since the height of the impact absorbing layer 400_5 may be smaller than the height of the anti-warping layer 500 , the material cost of manufacturing the impact absorbing layer 400_5 may be reduced.

[0153] Figure 14 is a cross-sectional view of a display device according to yet another embodiment.

[0154] Reference Figure 14 According to the display device 1_7 of this embodiment, Figure 6 The difference of the embodiment is that the impact absorbing layer 400_6 is not in contact with the anti-warping layer 500.

[0155] Specifically, the impact absorbing layer 400-6 may be housed inside the warp preventing layer 500 in a state where the size thereof is smaller than the internal space of the warp preventing layer 500 having a quadrangular frame shape with an empty interior. Figure 14 When describing with reference to the cross-sectional view of FIG, the side surface of the impact absorbing layer 400 - 6 may be arranged to be spaced apart from the inner side surface of the anti-warping layer 500 by a gap serving as a separation interval.

[0156] In the case of this embodiment, since the impact absorbing layer 400_6 has an area smaller than the inner space of the anti-warping layer 500 , the material cost of manufacturing the impact absorbing layer 400_6 can be reduced.

[0157] Figure 15 is a cross-sectional view of a display device according to yet another embodiment.

[0158] Reference Figure 15 According to the display device 1_8 of this embodiment, Figure 6 The difference of the embodiment is that it has a two-layer stacked structure including a first impact absorbing layer 400_7a and a second impact absorbing layer 400_7b.

[0159] Specifically, if Figure 15 As shown, the first impact absorbing layer 400_7a can be disposed inside the anti-warping layer 500 disposed in the display area DA, and the second impact absorbing layer 400_7b can be disposed to cover the upper surface of the first impact absorbing layer 400_7a and the upper surface of the anti-warping layer 500 in the non-display area NDA.

[0160] In the case of this embodiment, as the second impact-absorbing layer 400_7b covers the upper surface of the anti-warping layer 500, the side surface of the first impact-absorbing layer 400_7a contacts the side surface of the anti-warping layer 500 and the upper surface of the anti-warping layer 500 contacts the second impact-absorbing layer 400_7b, thereby increasing the contact area of ​​the anti-warping layer 500, thereby improving the mutual bonding between the first impact-absorbing layer 400_7a and the second impact-absorbing layer 400_7b and the anti-warping layer 500.

[0161] Moreover, in the present embodiment, after providing the first shock absorbing layer 400_7a having the same height as the anti-warping layer 500, the second shock absorbing layer 400_7b may be provided on the flat first shock absorbing layer 400_7a, thereby improving the convenience of the manufacturing process.

[0162] Figure 16 is a cross-sectional view of a display device according to yet another embodiment.

[0163] Reference Figure 16 In the display device 1_9 according to this embodiment, the first impact absorbing layer 400_8a is arranged inside the anti-warping layer 500 in the display area DA, and the second impact absorbing layer 400_8b is arranged immediately above the first impact absorbing layer 400_8a, so that the first impact absorbing layer 400_8a and the second impact absorbing layer 400_8b can be completely accommodated inside the anti-warping layer 500.

[0164] exist Figure 15 and Figure 16 In the embodiment, the first impact absorbing layer 400_7a, 400_8a and the second impact absorbing layer 400_7b, 400_8b may be different materials or the same material, and may have different strengths. The first impact absorbing layer 400_7a, 400_8a located on the upper surface of the display panel 100 may be a soft layer having lower strength than the second impact absorbing layer 400_7b, 400_8b, but is not limited thereto.

[0165] In the case of this embodiment, if Figure 15 and Figure 16 As shown, due to the stacked structure of two layers, including first shock absorbing layers 400_7a, 400_8a and second shock absorbing layers 400_7b, 400_8b, the functions of each layer can be selectively varied. For example, second shock absorbing layers 400_7b, 400_8b having a higher strength than the first shock absorbing layers 400_7a, 400_8a may be included. Alternatively, second shock absorbing layers 400_7b, 400_8b having a lower strength than the first shock absorbing layers 400_7a, 400_8a may be included.

[0166] Figure 17 is a cross-sectional view of a display device according to yet another embodiment.

[0167] exist Figure 6 In the embodiment, the anti-warping layer 500 is provided in the non-display area NDA as a single layer. However, referring to Figure 17 The display device 1_10 according to this embodiment may be constructed of two layers using a first anti-warping layer 500_2a and a second anti-warping layer 500_2b.

[0168] The first and second anti-warpage layers 500_2a and 500_2b may be made of metals having the same coefficient of thermal expansion (CTE), or may be made of metals having different coefficients of thermal expansion (CTE). For example, the first anti-warpage layer 500_2a may be made of a metal with a low CTE, and the second anti-warpage layer 500_2b may be made of a metal with a high CTE, but the present invention is not limited thereto.

[0169] In this embodiment, when a metal with a low CTE is used for the first anti-warping layer 500_2a and a metal with a high CTE is used for the second anti-warping layer 500_2b, for example, when positive curling occurs during a temperature increase in a product reliability evaluation (i.e., when curling occurs in the direction of the upper surface of the display panel 100), the occurrence of curling in the final product can be suppressed by guiding the curling in the opposite direction (i.e., in the direction of the lower surface of the display panel 100).

[0170] Figures 18 to 23 The exemplary embodiment shows that the positional relationship between the inner surface of the warpage prevention layer and the non-display area and the positional relationship between the outer surface of the warpage prevention layer and the non-display area can be variously modified.

[0171] Figure 18 is a cross-sectional view of a display device according to yet another embodiment.

[0172] Although in the above Figure 6 In the embodiment of FIG. 1 , the inner surface of the anti-warping layer 500 is aligned with the boundary between the display area DA and the non-display area NDA of the display panel 100, but the present invention is not limited thereto. In the display device 1_11 according to the present embodiment, as shown in FIG. Figure 18 As shown, the inner surface of the anti-warping layer 500_3 may be disposed inside the display area DA.

[0173] In the case of this embodiment, since the anti-warping layer 500_3 is set to a wider area from the non-display area NDA to a part of the display area DA, the display panel 100 can be pressed with a stronger force in a wider range, thereby suppressing the warping phenomenon of the product.

[0174] Figure 19 is a cross-sectional view of a display device according to yet another embodiment.

[0175] Reference Figure 19 In the display device 1_12 according to this embodiment, the entire area of ​​the anti-warping layer 500_4 may also be disposed within the display area DA. In this case, a shock absorbing layer 400_9 may be further disposed around the outer periphery of the anti-warping layer 500_4, but the present invention is not limited thereto.

[0176] Specifically, an inner surface of the anti-warping layer 500_4 may be located inside the display area DA, and an outer surface of the anti-warping layer 500_4 may be located at a boundary between the display area DA and the non-display area NDA.

[0177] In the case of this embodiment, Figure 18 In comparison, the anti-warping layer 500_4 is set closer to the central part of the display area DA. Therefore, especially when warping occurs at the center of the display panel 100, the anti-warping layer 500_4 set close to the center of the display panel 100 can suppress the warping of the product by suppressing the bending force at the center of the display panel 100.

[0178] Figure 20 is a cross-sectional view of a display device according to yet another embodiment.

[0179] Reference Figure 20 In the display device 1_13 of this embodiment, the inner surface of the anti-warping layer 500_5 can be set at the boundary between the display area DA and the non-display area NDA, and a portion of the anti-warping layer 500_5 can also be arranged to protrude from the outer contour of the display panel side surface 103.

[0180] In the case of this embodiment, Figure 18 In comparison, the anti-warping layer 500_5 is arranged on the outer contour of the display panel 100. Therefore, especially when warping occurs from the outer contour of the display panel 100, the anti-warping layer 500_5 arranged on the outer contour of the display panel 100 can suppress the warping of the product by suppressing the bending force from the outer contour of the display panel 100.

[0181] In addition, in the above Figure 6 In the embodiment of FIG. 1 , the anti-warping layer 500 is exemplarily shown as being disposed in the edge region of the impact absorbing layer 400, and the inner surface 503 of the anti-warping layer is aligned with the boundary between the display area DA and the non-display area NDA of the display panel 100. However, as shown in FIG. Figures 21 to 23 As shown, the anti-warping layer may be provided in a form embedded in the impact absorbing layer.

[0182] Figure 21 and Figure 22 is a cross-sectional view of a display device according to yet another embodiment.

[0183] The impact absorbing layers 400_10 and 400_11 may cover the entire upper surface, inner surface, and outer surface of the anti-warping layers 500_6 and 500_7. Figure 21 As shown, in the display device 1_14 according to this embodiment, the anti-warping layer 500_6 can also be provided inside the display area DA, as shown in FIG. Figure 22As shown, in the display device 1_15 according to this embodiment, the inner surface of the anti-warping layer 500_7 may also be provided at the boundary between the display area DA and the non-display area NDA.

[0184] In the case of this embodiment, the anti-warping layers 500_6 and 500_7 can be buried inside the impact absorbing layers 400_10 and 400_11 in a manner not exposed to the outside. Therefore, in the manufacturing process, after the anti-warping layers 500_6 and 500_7 are set, the process of coating the entire body with a coating liquid for forming the impact absorbing layer can be performed at one time, thereby simplifying the manufacturing process.

[0185] Figure 23 is a cross-sectional view of a display device according to yet another embodiment.

[0186] Reference Figure 23 In the display device 1_16 according to this embodiment, the anti-warpage layer 500_8 can be embedded within the impact-absorbing layer 400_12, with its upper surface exposed and both its inner and outer surfaces in contact with the impact-absorbing layer 400_12. The inner surface of the anti-warpage layer 500_8 can be positioned at the boundary between the display area DA and the non-display area NDA, and the side surface of the impact-absorbing layer 400_12 can be aligned with the display panel side surface 103.

[0187] In the present embodiment, the warpage prevention layer 500_8 is formed to be relatively small in size so as to be disposed in a partial area of ​​the non-display area NDA, thereby reducing the material cost of manufacturing the warpage prevention layer 500_8.

[0188] In addition, in the above Figure 6 In the embodiment of FIG. 1 , the case where the anti-warping layer 500 having a quadrangular frame shape is located in the edge region of the impact absorbing layer 400 is exemplarily shown, however, Figures 24 to 29 As shown, it can be arranged in various forms based on the upper plan view.

[0189] Figure 24 and Figure 25 is a plan view of a display device according to yet another embodiment.

[0190] like Figure 24 As shown, in the case where the anti-warping layer 500a of the display device 1_17 according to this embodiment has a rectangular shape, it can be arranged only on two opposite long sides, or as shown in FIG. Figure 25 As shown, the anti-warping layer 500b of the display device 1_18 according to this embodiment can be arranged only on two opposite short sides.

[0191] Figure 26 and Figure 27is a plan view of a display device according to yet another embodiment.

[0192] In the case where the display devices 1_19 and 1_20 according to this embodiment have a rectangular shape, the anti-warping layers 500c and 500d may be provided on all sides including a pair of long sides and a pair of short sides, and the anti-warping layers 500c and 500d may further include discontinuous sections (in other words, slit sections). Figure 26 The anti-warping layer 500c can also be arranged at all edges of the discontinuous intervals of the anti-warping layer 500c, or as shown in FIG. Figure 27 The anti-warping layer 500d, the discontinuous sections of the anti-warping layer 500d can also be arranged only on the long sides.

[0193] In this embodiment, the anti-warping layers 500c and 500d can be discontinuously arranged in a partial area or the entire area on the display panel 100. When the warping area varies according to the characteristics of the product, the anti-warping layers 500c and 500d can be set only in areas where warping frequently occurs to prevent warping from occurring, thereby reducing the material cost for manufacturing the anti-warping layers 500c and 500d.

[0194] Figure 28 and Figure 29 is a plan view of a display device according to yet another embodiment.

[0195] In this embodiment, when the display device 1_21 is circular, as shown in FIG. Figure 28 As shown, the anti-warping layer 500e may also be a circular shape with a through middle corresponding to the shape of the display device 1_21, as shown in FIG. Figure 29 As shown, when the display device 1_22 is elliptical, the anti-warping layer 500f can also be a corresponding elliptical shape with a through middle.

[0196] In this embodiment, the anti-warping layers 500e and 500f can be set in a form corresponding to the shape of the display devices 1_21 and 1_22, so the occurrence of warping can also be suppressed in products with a circular shape such as watches by applying the anti-warping layers 500e and 500f.

[0197] Figure 30 is a cross-sectional view of a display device according to yet another embodiment.

[0198] Figure 30 An example is shown in Figure 8 The display device 1_1 may further include a first soft layer 410 and a second soft layer 420 .

[0199] Reference Figure 30 According to the display device 1_23 of this embodiment, Figure 8The difference of the embodiment is that it further includes a first soft layer 410 located above the impact absorbing layer 400 and a second soft layer 420 located below the impact absorbing layer 400 based on the impact absorbing layer 400 .

[0200] The first soft layer 410 may be interposed between the impact absorbing layer 400 and the polarizing member 300 in the thickness direction of the display panel 100 .

[0201] Specifically, a lower surface of the first soft layer 410 may be in contact with the upper surface 401 of the impact absorbing layer and the upper surface 501 of the anti-warping layer, and an upper surface of the first soft layer 410 may be in contact with the polarizing member 300 .

[0202] The lower surface of the first soft layer 410 can directly contact the upper surface 401 of the impact absorbing layer and the upper surface 501 of the anti-warping layer, or a separate layer can be interposed therebetween, and the upper surface of the first soft layer 410 can directly contact the polarizing component 300, or a separate layer can be interposed therebetween.

[0203] The first soft layer 410 may play a role in alleviating stress and strain of the display panel 100 when the display panel 100 is folded or when an external impact is applied to the display panel 100 .

[0204] The second soft layer 420 may be interposed between the impact absorbing layer 400 and the display panel 100 in the thickness direction of the display panel 100 .

[0205] Specifically, the upper surface of the second soft layer 420 may contact the lower surface 402 of the impact absorbing layer and the lower surface 502 of the anti-warping layer, and the lower surface of the second soft layer 420 may contact the upper surface 102 of the display panel.

[0206] The upper surface of the second soft layer 420 can be in direct contact with the lower surface 402 of the impact absorbing layer and the lower surface 502 of the anti-warping layer, or a separate layer can be sandwiched therebetween, and the lower surface of the second soft layer 420 can be in direct contact with the upper surface 102 of the display panel, or a separate layer can be sandwiched therebetween.

[0207] The second soft layer 420 may play a role in alleviating stress and strain of the display panel 100 when the display panel 100 is folded or when an external impact is applied to the display panel 100 .

[0208] Furthermore, the second soft layer 420 can act as a buffer material between the display panel 100 and the impact-absorbing layer 400. Specifically, when the display panel 100 is a glass substrate, compared to direct contact between the display panel 100 and the impact-absorbing layer 400 made of a hard material, the presence of the second soft layer 420 can buffer stress on the display panel 100 when the display panel 100 is bent. In other words, the second soft layer 420 can reduce stress.

[0209] The first soft layer 410 and the second soft layer 420 may have a strength lower than that of the impact absorbing layer 400 , and the modulus of the first soft layer 410 and the second soft layer 420 may be 1 kPa to 1 GPa, preferably 0.01 MPa to 1 MPa, but is not limited thereto.

[0210] If the first soft layer 410 and the second soft layer 420 have a lower strength than the impact absorbing layer 400, the first soft layer 410 and the second soft layer 420 can flexibly compensate for the higher stiffness of the impact absorbing layer 400, thereby reducing stress on the display panel 100. If at least one of the first soft layer 410 and the second soft layer 420 includes an adhesive, for example, if the first soft layer 410 includes an adhesive, the first soft layer 410 can attach the polarizing element 300 to the impact absorbing layer 400 without requiring an additional adhesive layer, and if the second soft layer 420 includes an adhesive, the display panel 100 can be attached to the impact absorbing layer 400 without requiring an additional adhesive layer. In this way, the various components can be combined without an additional adhesive layer, thereby reducing the thickness of the product.

[0211] The thickness of the first soft layer 410 and the second soft layer 420 may be 5 to 200 μm, preferably 25 to 100 μm, but is not limited thereto.

[0212] If the thickness of the first soft layer 410 and the second soft layer 420 is less than 200 μm, the thickness of the product can be reduced. When the thickness of the first soft layer 410 and the second soft layer 420 is greater than 5 μm and includes an adhesive as described above, the first soft layer 410 can firmly support the polarizing component 300 on the impact absorbing layer 400, and the second soft layer 420 can firmly support the impact absorbing layer 400 on the display panel 100.

[0213] The first soft layer 410 and the second soft layer 420 can be made of the same material, have the same modulus, have the same thickness, and can include an adhesive, but are not limited thereto. They can have different materials, or different moduli, or different thicknesses, or one of the first soft layer 410 and the second soft layer 420 can include an adhesive.

[0214] In the present embodiment, the first soft layer 410 and the second soft layer 420 are provided to reduce the overall hardness of the product, thereby reducing the stress of the display panel 100 .

[0215] Furthermore, in the case where the first soft layer 410 and the second soft layer 420 include an adhesive, the positions of the polarizing member 300 and the display panel 100 may be supported and the bonding force may be improved.

[0216] Figure 31 is a cross-sectional view of a display device according to yet another embodiment.

[0217] exist Figure 30 In the display device 1_23, the first soft layer 410 and the second soft layer 420 are provided on both the upper surface and the lower surface of the impact absorbing layer 400, but referring to Figure 31 In the display device 1_24 according to this embodiment, the first soft layer 410 may be provided only on the upper surface of the impact absorbing layer 400, and referring to Figure 32 In the display device 1_25 according to this embodiment, the second soft layer 420 may be provided only on the lower surface of the impact absorbing layer 400 .

[0218] Specifically, refer to Figure 31 The upper surface 401 of the impact absorbing layer and the upper surface 501 of the anti-warping layer may contact the first soft layer 410 , and the lower surface 402 of the impact absorbing layer and the lower surface 502 of the anti-warping layer may contact the upper surface 102 of the display panel.

[0219] Reference Figure 32 The upper surface 401 of the impact absorbing layer and the upper surface 501 of the anti-warping layer may contact the polarizing component 300 , and the lower surface 402 of the impact absorbing layer and the lower surface 502 of the anti-warping layer may contact the second soft layer 420 .

[0220] In accordance with Figure 31 and Figure 32 In the case of this embodiment, when only one of the first soft layer 410 and the second soft layer 420 is provided, the first soft layer 410 and the second soft layer 420 are provided. Figure 30 Compared with the embodiment shown, a soft layer can be selectively provided, thereby reducing the manufacturing cost of the product.

[0221] Figure 33 is a cross-sectional view of a display device according to yet another embodiment.

[0222] exist Figure 30 In the embodiment, the lower surface 402 of the impact absorbing layer and the lower surface 502 of the anti-warping layer are both in contact with the second soft layer 420, but referring to Figure 33In the display device 1_26 according to this embodiment, the lower surface 402 of the impact absorbing layer can contact the upper surface of the second soft layer 420a, and a portion of the inner surface 503 of the anti-warping layer can contact the side surface of the second soft layer 420a.

[0223] Specifically, in Figure 30 In the embodiment, the anti-warping layer 500 is located in the edge region of the impact absorbing layer 400, but referring to Figure 33 , the anti-warping layer 500 may be located in an edge region of the impact-absorbing layer 400 and the second soft layer 420 a .

[0224] Figure 34 is a cross-sectional view of a display device according to yet another embodiment.

[0225] exist Figure 30 In the embodiment, the upper surface 401 of the impact absorbing layer and the upper surface 501 of the anti-warping layer are both in contact with the first soft layer 410, but referring to Figure 34 In the display device 1_27 according to this embodiment, the upper surface 401 of the impact absorbing layer can contact the lower surface of the first soft layer 410a, and a portion of the inner surface 503 of the anti-warping layer can contact the side surface of the first soft layer 410a.

[0226] Specifically, in Figure 30 In the embodiment, the anti-warping layer 500 is located in the edge region of the impact absorbing layer 400, but referring to Figure 34 , the anti-warping layer 500 may be located in an edge region of the impact absorbing layer 400 and the first soft layer 410 a .

[0227] according to Figure 33 and Figure 34 The anti-warping layer 500 of this embodiment is located in the edge area of ​​the impact absorbing layer 400 and the first soft layer 410a, or in the edge area of ​​the impact absorbing layer 400 and the second soft layer 420a, thereby preventing the positions of the impact absorbing layer 400 and the first soft layer 410a or the second soft layer 420b from deviating due to external impact while supporting the positions of the impact absorbing layer 400 and the first soft layer 410a or the second soft layer 420a.

[0228] While the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art will appreciate that the present invention may be implemented in other specific forms without changing the technical concept or essential features of the present invention. Therefore, it should be understood that the embodiments described above are illustrative in all respects and are not restrictive.

Claims

1. A display device comprising: The display panel includes a display area and a non-display area arranged around the display area; an impact absorbing layer, arranged on the display panel and disposed corresponding to the display area; as well as The anti-warping layer is arranged on the display panel, corresponding to the non-display area, and is arranged in at least a portion of the edge area of ​​the impact absorbing layer.

2. The display device according to claim 1, wherein The upper surface of the impact absorbing layer is flat.

3. The display device according to claim 2, wherein: The upper surface of the anti-warping layer is flat.

4. The display device according to claim 3, wherein The upper surface of the impact absorbing layer and the upper surface of the anti-warping layer are placed on the same plane.

5. The display device according to claim 1, wherein The impact absorbing layer is a transparent resin layer having the same shape as that of the display area of ​​the display panel and overlapping with the display area of ​​the display panel. The display device according to claim 3 , wherein: The impact absorbing layer comprises: a lower surface of the impact absorbing layer facing the upper surface of the display panel; an upper surface of the impact absorbing layer, which is opposite to the lower surface of the impact absorbing layer; and The impact absorbing layer side surface is a peripheral surface provided along the peripheral direction between the impact absorbing layer lower surface and the impact absorbing layer upper surface, Wherein, the side surface of the impact absorbing layer is in contact with the anti-warping layer along the peripheral direction.

7. The display device according to claim 6, further comprising: a soft layer, provided on at least one of the upper surface of the impact absorbing layer and the lower surface of the impact absorbing layer; The soft layer has a strength smaller than that of the impact absorbing layer.

8. The display device according to claim 7, wherein: The soft layer comprises: a first soft layer, in contact with the upper surface of the impact absorbing layer; and The second soft layer is in contact with the lower surface of the impact absorbing layer.

9. The display device according to claim 8, wherein The second soft layer is sandwiched between the lower surface of the impact absorbing layer and the upper surface of the display panel. The second soft layer has a strength smaller than that of the first soft layer.

10. The display device according to claim 8, further comprising: a polarizing component in contact with the upper surface of the impact absorbing layer; as well as The cover panel is provided on the lower surface of the display panel which is opposite to the upper surface of the display panel.

11. The display device according to claim 1, wherein The anti-warping layer has a four-sided frame, a circular or an elliptical form including an empty space inside, The impact absorbing layer is accommodated in the empty space of the anti-warping layer.

12. The display device according to claim 4, wherein The warping prevention layer has the same shape as that of the non-display area of ​​the display panel and overlaps the non-display area.

13. The display device according to claim 1, wherein The anti-warping layer includes a resin or a metal having a strength greater than that of the impact absorbing layer.

14. The display device according to claim 13, wherein: The anti-warping layer comprises at least one selected from aluminum, carbon fiber reinforced plastic, and stainless steel.

15. The display device according to claim 6, wherein The anti-warping layer comprises: The inner surface of the anti-warping layer is in contact with the side surface of the impact absorbing layer along the peripheral direction; and The outer surface of the anti-warping layer is the opposite surface of the inner surface of the anti-warping layer and is arranged at the outermost contour. The outer surface of the outermost contour of the display panel and the outer surface of the anti-warping layer are arranged to be aligned on the same line along a vertical direction perpendicular to the upper surface of the display panel.

16. The display device according to claim 15, further comprising: a soft layer provided on at least one of the upper surface of the impact absorbing layer and the lower surface of the impact absorbing layer and having a strength lower than that of the impact absorbing layer; Wherein, the anti-warping layer comprises: an upper surface of the anti-warping layer, disposed above the inner surface of the anti-warping layer and the outer surface of the anti-warping layer; and The lower surface of the anti-warping layer is opposite to the upper surface of the anti-warping layer. Wherein, at least one surface of the inner side surface of the anti-warping layer, the upper surface of the anti-warping layer, and the lower surface of the anti-warping layer is in contact with the soft layer.

17. A display device comprising: A display panel comprising a first area and a second area arranged adjacent to the first area; a resin layer disposed on the first region of the display panel and having a first strength; and The frame layer is arranged on the second area of ​​the display panel and has a second strength greater than the first strength.

18. The display device according to claim 17, wherein: The second intensity is 5 to 50 times greater than the first intensity.

19. The display device according to claim 17, wherein: The frame layer includes a metal frame with a hollow interior. Wherein, the width of the metal frame is 1 mm to 10 mm.

20. The display device according to claim 17, wherein The resin layer and the frame layer are at least partially in contact with each other.

Images