Foldable display device

Abstract

Disclosed is a foldable display device including a display module in which a panel hole is defined, a sensor device disposed in the panel hole, and a panel under cover disposed on a surface of the display module and in which a cover hole is defined such that the sensor device is disposed in the cover hole, the panel under cover including a buffer member and a first adhesive member attaching the buffer member to the surface of the display module, wherein a minimum distance between the first adhesive member and the sensor device is greater than a minimum distance between the buffer member and the sensor device.

Description

Technical Field

[0001] Embodiments of the present invention relate to foldable display devices. Background Technology

[0002] With display devices being used in various electronic devices, the demand for display devices with diverse functions and design features is increasing. To provide an expanded display area, for example, by defining through-holes within the display area, display devices have been developed that have display areas with defined through-holes and optical sensors (such as camera sensors, infrared sensors, etc.) arranged within such through-holes. Furthermore, to improve portability and simultaneously provide a wide display screen, flexible display devices that can be bent within their display area or foldable display devices that can be folded within their display area have been developed. Summary of the Invention

[0003] In foldable display devices, holes can be defined in a substrate or film by laser cutting, but due to the burrs in the holes, recognition errors may occur in cameras or sensors inserted into the holes.

[0004] Embodiments of the present invention provide a foldable display device that can prevent recognition errors of the camera or sensor in the hole due to any burrs in the hole.

[0005] However, the present invention is not limited to those set forth herein. The above and other embodiments of the invention will become more apparent to those skilled in the art from the following detailed description of the invention.

[0006] Embodiments of the present invention provide a foldable display device, the foldable display device comprising: a display module having a panel hole defined therein; a sensor device disposed in the panel hole; and a lower panel cover disposed on the surface of the display module, the lower panel cover having a cover hole defined therein such that the sensor device is disposed in the cover hole, the lower panel cover including a cushioning member and a first adhesive member, the first adhesive member attaching the cushioning member to the surface of the display module, wherein the minimum distance between the first adhesive member and the sensor device is greater than the minimum distance between the cushioning member and the sensor device.

[0007] In one embodiment, the lower panel cover may include a second adhesive member, and a cushioning member is inserted between the second adhesive member and the first adhesive member.

[0008] In an embodiment, the minimum distance between the second adhesive member and the sensor device in the cover hole can be greater than the minimum distance between the buffer member and the sensor device.

[0009] In an implementation, the minimum distance between the first adhesive member and the sensor device may be less than or equal to the minimum distance between the second adhesive member and the sensor device.

[0010] In this implementation, the distance between the buffer member and the sensor device in the cover hole can increase as the distance from the display module decreases.

[0011] In one embodiment, the distance between the first adhesive member and the sensor device in the cover hole can increase as the distance from the display module decreases.

[0012] In one embodiment, the cutting planes of the first adhesive member and the cutting planes of the buffer member can contact and align with each other in the cover hole.

[0013] In this implementation, the distance between the buffer member and the sensor device in the cover hole can decrease as the distance from the display module decreases.

[0014] In one embodiment, the cutting planes of the second adhesive member and the cutting planes of the buffer member can contact and align with each other in the cover hole.

[0015] In this implementation, the minimum diameter of the cover hole can be greater than the maximum diameter of the panel hole.

[0016] In one embodiment, the display module may include a display panel and a protective layer. The display panel includes pixels for displaying images, and the protective layer is disposed on the surface of the display panel.

[0017] In one embodiment, the protective layer may contact the first adhesive member, and the minimum distance between the protective layer and the sensor device may be less than the minimum distance between the first adhesive member and the sensor device.

[0018] In one embodiment, the foldable display device may further include a metal plate attached to a first surface of the panel cover via a second adhesive member, wherein the metal plate defines a plate hole that overlaps with the cover hole.

[0019] In this embodiment, the sensor device can be disposed in the plate hole, and the minimum distance between the metal plate and the sensor device can be less than one of the minimum distance between the first adhesive member and the sensor device, the minimum distance between the second adhesive member and the sensor device, and the minimum distance between the buffer member and the sensor device.

[0020] Embodiments of the present invention provide a foldable display device, the foldable display device comprising: a display module having a panel hole defined therein; a first sensor device disposed in the panel hole; a second sensor device; and a lower panel cover disposed on the surface of the display module, the lower panel cover having a first cover hole and a second cover hole defined therein, such that the first sensor device is disposed in the first cover hole and the second sensor device is disposed in the second cover hole, the lower panel cover including a cushioning member and a first adhesive member, the first adhesive member attaching the cushioning member to the surface of the display module, wherein the minimum distance between the first adhesive member and the first sensor device is greater than the minimum distance between the cushioning member and the first sensor device, and the first adhesive member overlaps with the second cover hole.

[0021] In one embodiment, the lower panel cover may further include a second adhesive member, and a buffer member is inserted between the second adhesive member and the first adhesive member.

[0022] In one embodiment, the second cover hole can penetrate the second adhesive member and the buffer member.

[0023] In an embodiment, the minimum distance between the second adhesive member and the first sensor device can be greater than the minimum distance between the buffer member and the first sensor device.

[0024] In an embodiment, the minimum distance between the second adhesive member and the second sensor device can be greater than the minimum distance between the buffer member and the second sensor device.

[0025] In one embodiment, the second sensor device may be spaced apart from the first adhesive member in the thickness direction of the panel cover.

[0026] According to the above and other embodiments of the present invention, even when there are burrs on the adhesive member in the cover hole of the lower panel cover, it is possible to prevent the burrs from protruding outward beyond the cutting plane of the buffer member. Therefore, it is possible to prevent recognition errors of the sensor device caused by burrs, and it is possible to prevent interference between the sensor device and the burrs.

[0027] Other features and embodiments will be apparent from the accompanying drawings, claims, and the following detailed description. Attached Figure Description

[0028] The above and other embodiments and features of the present invention will become clearer from the detailed description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0029] Figure 1 This is a perspective view showing an embodiment of the front surface of the foldable display device according to the present invention in its unfolded state;

[0030] Figure 2This is a perspective view showing an embodiment of the foldable display device according to the invention in its unfolded state, with its rear surface visible.

[0031] Figure 3 This is a perspective view illustrating an embodiment of the foldable display device according to the present invention in its folded state;

[0032] Figure 4 This is a side view illustrating an embodiment of the foldable display device according to the present invention in its unfolded state;

[0033] Figure 5 This is a side view illustrating an embodiment of the foldable display device according to the present invention in its folded state;

[0034] Figure 6 It is along Figure 1 A sectional view taken by line I-I';

[0035] Figures 7 to 9 This is a cross-sectional view illustrating an embodiment of the manufacturing of the lower panel cover according to the present invention;

[0036] Figure 10 This is a cross-sectional view of an embodiment of the panel cover according to the present invention;

[0037] Figure 11 This is a plan view of an embodiment of the panel bottom cover according to the present invention;

[0038] Figure 12 This is a cross-sectional view of an embodiment of a foldable display device with a lower panel cover attached according to the present invention;

[0039] Figure 13 This is a cross-sectional view showing another embodiment of the panel opening, first cover opening, and second cover opening of the foldable display device according to the present invention;

[0040] Figure 14 It is shown Figure 13 An exemplary cross-sectional view of region A;

[0041] Figure 15 It is shown Figure 13 Another exemplary cross-sectional view of region A;

[0042] Figure 16 It is shown Figure 13 Another exemplary cross-sectional view of region A;

[0043] Figure 17 and Figure 18 This is a cross-sectional view illustrating another embodiment of the manufacturing of the lower panel cover according to the present invention;

[0044] Figure 19 It is shown Figure 17 and Figure 18 A plan view of the first cover hole on the lower panel of the device;

[0045] Figure 20 It is along Figure 19 A sectional view taken from line II-II';

[0046] Figure 21 It is shown Figure 17 and Figure 18 A cross-sectional view of the first cover hole of the panel cover having burrs on the first adhesive member and burrs on the second adhesive member.

[0047] Figure 22 This is a cross-sectional view of an embodiment of the foldable display device according to the present invention;

[0048] Figure 23 This is a cross-sectional view showing another embodiment of the first cover hole and the second cover hole of the foldable display device according to the present invention;

[0049] Figure 24 It is shown Figure 23 An enlarged sectional view of region B;

[0050] Figure 25 This is an enlarged cross-sectional view showing another embodiment of the first cover hole of the foldable display device according to the present invention;

[0051] Figure 26 This is an enlarged cross-sectional view showing another embodiment of the first cover hole of the foldable display device according to the present invention;

[0052] Figure 27 This is an enlarged cross-sectional view showing another embodiment of the first cover hole of the foldable display device according to the present invention;

[0053] Figure 28 This is an enlarged cross-sectional view showing another embodiment of the first cover hole of the foldable display device according to the present invention;

[0054] Figure 29 This is a cross-sectional view showing another embodiment of the first cover hole and the second cover hole of the foldable display device according to the present invention;

[0055] Figure 30 It is shown Figure 29 An enlarged sectional view of region C;

[0056] Figure 31 This is a cross-sectional view showing another embodiment of the first cover hole and the second cover hole of the foldable display device according to the present invention;

[0057] Figure 32This is a cross-sectional view illustrating another embodiment of the first and second cover holes of the foldable display device according to the present invention; and

[0058] Figure 33 It is shown Figure 32 A cross-sectional view of region D. Detailed Implementation

[0059] Embodiments of the invention will now be described more fully below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0060] It should also be understood that when a layer is referred to as being "on" another layer or substrate, it may be directly on that other layer or substrate, or there may be an intervening layer. Throughout the specification, the same reference numerals denote the same components.

[0061] It should be understood that although the terms “first,” “second,” “third,” etc., may be used in this document to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or section from another. Therefore, without departing from the teachings herein, the “first element,” “component,” “region,” “layer,” or “section” discussed below may be referred to as a second element, component, region, layer, or section.

[0062] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms, including “at least one,” unless the content clearly indicates otherwise. “Or” means “and / or.” As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms “comprises” and / or “comprising” or “includes” and / or “including”, when used in this specification, specify the presence of the described features, areas, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, areas, integrals, steps, operations, elements, components, and / or groups thereof.

[0063] Furthermore, relative terms such as “down” or “bottom” and “up” or “top” may be used herein to describe the relationship between one element and another as shown in the accompanying drawings. It should be understood that, in addition to the orientations depicted in the drawings, the relative terms are intended to encompass different orientations of the device. In an exemplary embodiment, when the device in one of the drawings is flipped, an element described as being “down” to the other element will be oriented to be “up” to the other element. Therefore, the exemplary term “down” may include both “down” and “up” orientations depending on the specific orientation of the drawing. Similarly, when the device in one of the drawings is flipped, an element described as being “below” or “below” the other element will be oriented to be “above” the other element. Therefore, the exemplary term “below” or “below” may include both “up” and “down” orientations.

[0064] As used herein, “about” or “approximately” includes the stated value and means within an acceptable range of deviation from the stated value, as determined by one of ordinary skill in the art, taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0065] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in common dictionaries shall be interpreted as having the same meaning as they have in the context of the relevant technology and this invention, and shall not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0066] Embodiments are described herein with reference to schematic cross-sectional views as idealized embodiments. Thus, variations in the shapes depicted in the drawings due to, for example, manufacturing techniques and / or tolerances are to be expected. Therefore, the embodiments described herein should not be construed as limited to the specific shapes of the regions shown herein, but should include deviations in shape due to, for example, manufacturing processes. In embodiments, regions shown or described as flat may generally have rough and / or non-linear characteristics. Furthermore, sharp corners shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to represent the precise shapes of the regions, nor are they intended to limit the scope of the claims.

[0067] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0068] Figure 1 This is a perspective view showing an embodiment of the front surface of the foldable display device according to the present invention in its unfolded state. Figure 2 This is a perspective view showing an embodiment of the rear surface of the foldable display device according to the present invention in its unfolded state. Figure 3 This is a perspective view illustrating an embodiment of the foldable display device according to the present invention in its folded state.

[0069] In the following description, the foldable display device 10 will be used for, for example, smartphones, but the invention is not limited thereto. In embodiments, the foldable display device 10 may be used not only for smartphones, but also for, for example, mobile phones, tablet personal computers (“PCs”), personal digital assistants (“PDAs”), portable multimedia players (“PMPs”), televisions (“TVs”), game consoles, watch-type electronic devices, head-mounted displays (“HMDs”), PC monitors, laptop computers, car navigation systems, car dashboards, digital cameras, camcorders, external billboards, electronic display panels, medical devices, testing equipment, home appliances (such as refrigerators or washing machines), or Internet of Things (“IoT”) devices.

[0070] The foldable display device 10 can be classified in various ways depending on how it displays images. In embodiments, for example, the foldable display device 10 may include an organic light-emitting diode (“OLED”) display device, an inorganic electroluminescent (“EL”) display device, a quantum dot light-emitting diode (“QLED”) display device, a micro-LED display device, a nano-LED display device, a field emission display (“FED”) device, or an electrophoretic display (“EPD”) device. Hereinafter, the foldable display device 10 will be described as, for example, an OLED display device, which will be simply referred to as a display device unless otherwise stated. However, the foldable display device 10 is not particularly limited to OLED display devices and can also be applied to a variety of other display devices.

[0071] refer to Figures 1 to 3 In the plan view, the first direction DR1 parallel to the first side of the foldable display device 10 can be the horizontal direction of the foldable display device 10, the second direction DR2 parallel to the second side of the foldable display device 10 that meets the first side can be the vertical direction of the foldable display device 10, and the third direction DR3 can be the thickness direction of the foldable display device 10.

[0072] In a plan view, the foldable display device 10 may have a quadrilateral (e.g., rectangular or square) shape. In an embodiment, for example, in a plan view, the foldable display device 10 may have a rectangular shape with right-angled corners or rounded corners. In a plan view, the foldable display device 10 may have a pair of short sides on a first direction DR1 and a pair of long sides on a second direction DR2.

[0073] The foldable display device 10 includes a display area DA and a non-display area NDA. In a plan view, the shape of the display area DA may correspond to the shape of the foldable display device 10. In an embodiment, for example, if the foldable display device 10 has a rectangular shape in a plan view, the display area DA may also have a rectangular shape in the plan view.

[0074] The display area DA can be an area comprising multiple pixels and thus displaying an image. The multiple pixels can be arranged in rows and columns. In a planar view, the multiple pixels can have rectangular, rhomboid, or square shapes, but the invention is not limited thereto. In alternative embodiments, the multiple pixels can have quadrilateral shapes other than rectangular, rhomboid, or square shapes, other polygonal shapes, circular shapes, or elliptical shapes in the planar view.

[0075] The non-display area NDA can be an area that does not contain pixels and therefore does not display an image. The non-display area NDA can be set around the display area DA. The non-display area NDA can be as follows: Figure 1 and Figure 3 The display area DA is surrounded as shown in the diagram, but the invention is not limited thereto. The display area DA may be surrounded only partially by the non-display area NDA.

[0076] At least one panel hole PH can be defined in the front surface of the foldable display device 10. The panel hole PH can be defined in the display area DA. The panel hole PH can be as follows: Figure 1 and Figure 3 As shown, the panel hole PH is surrounded by the display area DA, but the invention is not limited thereto. The panel hole PH may be partially surrounded by the display area DA. In this case, a portion of the panel hole PH may be surrounded by the display area DA, and another portion of the panel hole PH may be surrounded by the non-display area NDA.

[0077] like Figure 1 and Figure 2 As shown, a plurality of cover holes CH1, CH2, and CH3 may be defined in the rear surface of the foldable display device 10. Cover holes CH1, CH2, and CH3 may include a first cover hole CH1, a second cover hole CH2, and a third cover hole CH3. The first cover hole CH1, the second cover hole CH2, and the third cover hole CH3 may be defined in the rear surface of the foldable display device 10 to overlap with the display area DA. The first cover hole CH1, the second cover hole CH2, and the third cover hole CH3 may be invisible on the front surface of the foldable display device 10, but may be visible on the rear surface of the foldable display device 10. The first cover hole CH1 may overlap with and communicate with the panel hole PH. That is, the panel hole PH and the first cover hole CH1 may be defined as a single hole.

[0078] Sensor devices may be disposed in the panel hole PH, the first cover hole CH1, the second cover hole CH2, and the third cover hole CH3. In an embodiment, the sensor device may be an optical sensor capable of sensing light, such as a camera sensor, an illumination sensor, or a proximity sensor.

[0079] Panel hole PH, first cover hole CH1, second cover hole CH2, and third cover hole CH3 may have the same dimensions, but the invention is not limited thereto. In an alternative embodiment, panel hole PH, first cover hole CH1, second cover hole CH2, and third cover hole CH3 may have different dimensions. Identical sensor devices may be disposed in panel hole PH, first cover hole CH1, second cover hole CH2, and third cover hole CH3, but the invention is not limited thereto. In an alternative embodiment, different sensor devices may be disposed in panel hole PH, first cover hole CH1, second cover hole CH2, and third cover hole CH3. In an embodiment, for example, a camera sensor may be disposed in panel hole PH and first cover hole CH1, an illumination sensor may be disposed in second cover hole CH2, and a proximity sensor may be disposed in third cover hole CH3.

[0080] In the plan view, panel hole PH, first cover hole CH1, second cover hole CH2, and third cover hole CH3 can be represented as follows: Figures 1 to 3 The invention may have a circular or polygonal shape as shown, but it is not limited to this. In embodiments, as... Figures 1 to 3 As shown, for example, the panel hole PH, the first cover hole CH1, and the second cover hole CH2 can be circular, and the third cover hole CH3 can be rectangular. In an alternative embodiment, the panel hole PH, the first cover hole CH1, the second cover hole CH2, and the third cover hole CH3 can all be circular or polygonal, such as rectangular.

[0081] Figures 1 to 3 The diagram shows a foldable display device 10 with one panel hole PH and three cover holes (i.e., a first cover hole CH1, a second cover hole CH2, and a third cover hole CH3), but the invention is not limited thereto. In an alternative embodiment, the foldable display device 10 may have multiple panel holes PH and multiple cover holes CH1, CH2, and CH3.

[0082] The foldable display device 10 can be in a folded state or an unfolded state. The foldable display device 10 can fold outwards, allowing the display area DA to be positioned on the outer side, such as... Figure 3 As shown in the figure. When the foldable display device 10 is folded outward, portions of the bottom surface of the foldable display device 10 can face each other.

[0083] The foldable display device 10 may include a foldable region FDA, a first non-foldable region NFA1, and a second non-foldable region NFA2. The foldable region FDA may be the area of ​​the foldable display device 10 that is folded, and the first non-foldable region NFA1 and the second non-foldable region NFA2 may be the areas of the foldable display device 10 that are not folded.

[0084] The first non-folded region NFA1 may be located on one side (e.g., the upper side) of the folded region FDA. The second non-folded region NFA2 may be located on the other side (e.g., the lower side) of the folded region FDA. The folded region FDA may be a region curved with a predetermined curvature between the first fold line FL1 and the second fold line FL2. The first fold line FL1 may be the boundary between the folded region FDA and the first non-folded region NFA1, and the second fold line FL2 may be the boundary between the folded region FDA and the second non-folded region NFA2.

[0085] like Figure 1 and Figure 3 As shown, the first folding line FL1 and the second folding line FL2 can extend along the first direction DR1, and the foldable display device 10 can be folded along the second direction DR2. As a result, the length of the foldable display device 10 along the second direction DR2 can be reduced to about half, making it easy and convenient for users to carry the foldable display device 10 with them.

[0086] The directions in which the first fold line FL1 and the second fold line FL2 extend are not limited to the first direction DR1. That is, in an optional embodiment, the first fold line FL1 and the second fold line FL2 can extend in the second direction DR2, and the foldable display device 10 can be folded in the first direction DR1. In this case, the length of the foldable display device 10 in the first direction DR1 can be reduced to about half. In an optional embodiment, the first fold line FL1 and the second fold line FL2 can extend in a diagonal direction. In this case, the foldable display device 10 can be folded into a triangular shape.

[0087] Figure 1 and Figure 3 The illustration shows that each of the display area DA and the non-display area NDA overlaps with the folded area FDA, the first non-folded area NFA1, and the second non-folded area NFA2, but the invention is not limited thereto. In an alternative embodiment, each of the display area DA and the non-display area NDA overlaps with at least one of the folded area FDA, the first non-folded area NFA1, and the second non-folded area NFA2.

[0088] The panel hole PH is shown as being defined in the first non-folded region NFA1, but the invention is not limited thereto. In an alternative embodiment, the panel hole PH may be defined in at least one of the first non-folded region NFA1 and the second non-folded region NFA2.

[0089] Figure 4 This is a side view illustrating an embodiment of the foldable display device according to the present invention in its unfolded state. Figure 5 This is a side view illustrating an embodiment of the foldable display device according to the present invention in its folded state.

[0090] refer to Figure 4 and Figure 5 The foldable display device 10 may include a display module 11, a window component 500, a window protective layer 510, and a panel bottom cover 600.

[0091] Window member 500 may be disposed on the surface of display module 11. In an embodiment, for example, said surface of display module 11 may be the top surface of display module 11. Window member 500 may cover said surface of display module 11 and thus protect display module 11. In an embodiment, window member 500 may include a transparent material, such as glass, particularly ultrathin glass (“UTG”) having a thickness of about 0.1 mm or less. Window member 500 may include plastic, such as a transparent polyimide (“PI”) film, but the invention is not limited thereto.

[0092] A window protective layer 510 may be disposed on the surface of the window member 500. The surface of the window member 500 may be the top surface of the window member 500. The window protective layer 510 may perform at least one of the following functions: anti-scattering function, anti-impact function, anti-denting function, anti-fingerprint function, and anti-glare function.

[0093] The lower panel cover 600 can be disposed on a second surface of the display module 11 opposite to the aforementioned surface of the display module 11. The second surface of the display module 11 can be the bottom surface of the display module 11. Figure 4 and Figure 5 The diagram shows the lower panel cover 600 disposed within the folding area FDA, but the invention is not limited thereto. In an alternative embodiment, the lower panel cover 600 can be removed from the folding area FDA, such that the foldable display device 10 is smoothly foldable.

[0094] The panel bottom cover 600 may include at least one of a light blocking member for absorbing light incident from the outside, a buffer member for absorbing impacts from the outside, and a heat dissipation member for effectively releasing heat from the display panel 100.

[0095] A light-blocking member may be disposed below the display panel 100. The light-blocking member blocks the transmission of light, thereby preventing components disposed below it from becoming visible from the top of the display panel 100. In embodiments, the light-blocking member may include a light-absorbing material, such as black pigment or black dye.

[0096] A buffer member may be disposed below the light-blocking member. The buffer member absorbs external impacts and thereby prevents damage to the display panel 100. The buffer member may consist of a single layer or multiple layers. In embodiments, the buffer member may include a polymer resin (such as polyurethane (“PU”), polycarbonate (“PC”), polypropylene (“PP”), or polyethylene (“PE”)) or an elastic material (such as a rubber-foamed sponge, a urethane-based material, or an acrylic material).

[0097] The heat dissipation component may be disposed below the buffer component. In an embodiment, the heat dissipation component may include a first heat dissipation layer and a second heat dissipation layer, the first heat dissipation layer comprising graphite or carbon nanotubes, and the second heat dissipation layer comprising a thin metal film comprising a metal with good thermal conductivity (such as copper, nickel, iron, or silver).

[0098] The display module 11 may include a display panel 100, a protective layer 200, a polarizer layer 300, and an impact absorption layer 400.

[0099] The display panel 100, used for displaying images, can be an OLED display panel using OLEDs, a QLED display panel including a quantum dot light-emitting layer, an inorganic EL display panel including inorganic semiconductors, or a microLED display panel using microLEDs. Although the display panel 100 has been described as, for example, an OLED display panel, the invention is not limited thereto. Reference will be made later. Figure 9 Description of display panel 100.

[0100] The protective layer 200 can be disposed on the first surface of the display panel 100. The first surface of the display panel 100 can be the bottom surface of the display panel 100. Figure 4 and Figure 5 The protective layer 200 is shown disposed in the folding region FDA, but the invention is not limited thereto. In another embodiment, the protective layer 200 can be removed from the folding region FDA, such that the foldable display device 10 is smoothly foldable. The protective layer 200 may be a polymer layer. In embodiments, for example, the protective layer 200 may include PI, polyethylene terephthalate (“PET”), polycarbonate (“PC”), polyethylene (“PE”), polypropylene (“PP”), polysulfone (“PSF”), polymethyl methacrylate (“PMMA”), triacetyl cellulose (“TAC”), or cyclic olefin polymer (“COP”).

[0101] The polarizer layer 300 can be disposed on a second surface of the display panel 100 opposite to the first surface of the display panel 100. The second surface of the display panel 100 can be the top surface of the display panel 100. The polarizer layer 300 may include a linear polarizer plate and a phase retardation film (such as a quarter-wave plate). In this case, the phase retardation film can be disposed on the display panel 100, and the linear polarizer plate can be disposed on the phase retardation film.

[0102] The shock-absorbing layer 400 can enhance the durability of the window member 500 and improve optical performance. In embodiments, for example, the shock-absorbing layer 400 may include PI, PET, PC, PE, PP, PSF, PMMA, TAC, or COP. The shock-absorbing layer 400 may be omitted.

[0103] When the foldable display device 10 is folded outwards, such as Figure 5 As shown, the display panel 100, protective layer 200, polarizer layer 300, shock absorption layer 400, window member 500, window protective layer 510 and panel cover 600 of the foldable display device 10 can be folded in the folding area FDA.

[0104] Figure 6 It is along Figure 1 A sectional view taken from line I-I'.

[0105] refer to Figure 6 The panel cover 600 may include a cushioning member 610, a first adhesive member 710 disposed on a first surface of the cushioning member 610, and a second adhesive member 720 disposed on a second surface of the cushioning member 610.

[0106] The cushioning member 610 can absorb impacts from the outside and improve the durability of the foldable display device 10. In embodiments, the cushioning member 610 may include, for example, rubber, PU, ​​PI, PET, PC, PE, PP, PSF, PMMA, TAC, or COP. In embodiments, the cushioning member 610 may include foam, such as PU foam. A first adhesive member 710 joining the cushioning member 610 and the protective layer 200 may be disposed between the cushioning member 610 and the protective layer 200. A second adhesive member 720 joining the lower plate (not shown) and the cushioning member 610 may be disposed between the cushioning member 610 and the lower plate.

[0107] A third adhesive member 730 may be disposed between the polarizer layer 300 and the shock absorption layer 400, and the third adhesive member 730 may be attached to the polarizer layer 300 and the shock absorption layer 400. A fourth adhesive member 740 may be disposed between the shock absorption layer 400 and the window member 500, and the fourth adhesive member 740 may be attached to the shock absorption layer 400 and the window member 500. Furthermore, another adhesive member may be disposed between the protective layer 200 and the display panel 100 and / or between the display panel 100 and the polarizer layer 300.

[0108] In an embodiment, the first adhesive member 710, the second adhesive member 720, the third adhesive member 730, and the fourth adhesive member 740 may include a pressure-sensitive adhesive (“PSA”).

[0109] The panel hole PH can penetrate the display module 11. The panel hole PH can be a hole that penetrates the display panel 100, the protective layer 200, the polarizer layer 300 and the third adhesive member 730 of the display module 11.

[0110] The first cover hole CH1 and the second cover hole CH2 can be defined in the lower panel cover 600. The first cover hole CH1 and the second cover hole CH2 can be holes that penetrate the lower panel cover 600. The first cover hole CH1 can penetrate the first adhesive member 710, the buffer member 610 and the second adhesive member 720. The first cover hole CH1 can overlap with and communicate with the panel hole PH. The second cover hole CH2 can be spaced apart from the first cover hole CH1 and can penetrate the first adhesive member 710, the buffer member 610 and the second adhesive member 720.

[0111] Sensor devices SEDs can be disposed in the panel hole PH, the first cover hole CH1, and the second cover hole CH2. The sensor devices SEDs can include a first sensor device SED1 and a second sensor device SED2. The first sensor device SED1 can be inserted into the panel hole PH and the first cover hole CH1, but can be spaced apart from the display panel 100, protective layer 200, polarizer layer 300, shock absorption layer 400, and third adhesive member 730 of the display module 11. The second sensor device SED2 can be inserted into the second cover hole CH2, but can be spaced apart from the first adhesive member 710, buffer member 610, and second adhesive member 720 of the lower panel cover 600. The first sensor device SED1 can be disposed at the center of the panel hole PH and the first cover hole CH1, and the second sensor device SED2 can be disposed at the center of the second cover hole CH2.

[0112] In one embodiment, for example, the first sensor device SED1 may be a camera sensor. Because the first sensor device SED1 is closer to the window member 500, a greater amount of light is incident through the panel aperture PH. The first sensor device SED1 may overlap with the display panel 100, the protective layer 200, the polarizer layer 300, the third adhesive member 730, the buffer member 610, the first adhesive member 710, and the second adhesive member 720 in the first direction DR1.

[0113] In this embodiment, the second sensor device SED2 may be a proximity sensor or a lighting sensor. The second sensor device SED2 may overlap with the buffer member 610, the first adhesive member 710, and the second adhesive member 720 in the first direction DR1.

[0114] The panel hole PH can be defined by laser cutting the protective layer 200, display panel 100, polarizer layer 300, and third adhesive member 730. The first cover hole CH1 and the second cover hole CH2 can be defined in the panel cover 600 by laser cutting the first adhesive member 710, buffer member 610, and second adhesive member 720. The panel cover 600, which defines the first cover hole CH1 and the second cover hole CH2, can be attached to the surface of the protective layer 200 of the display module 11, such that the panel hole PH and the first cover hole CH1 can overlap each other, and the inner circumferential surface of the panel hole PH and the inner circumferential surface of the first cover hole CH1 can be arranged continuously.

[0115] Figures 7 to 9 This is a cross-sectional view illustrating an embodiment of the manufacturing panel cover according to the present invention. Figure 10 This is a cross-sectional view of an embodiment of the panel cover according to the present invention. Figure 11 This is a plan view of the bottom cover of the panel. Figure 12 This is a cross-sectional view of an embodiment of a foldable display device with a panel cover attached according to the present invention.

[0116] refer to Figure 7 and Figure 8 The first adhesive component 710, the second adhesive component 720, and the buffer component 610 are prepared. The first adhesive component 710, the second adhesive component 720, and the buffer component 610 can be formed into a film.

[0117] Subsequently, the first adhesive member 710 and the second adhesive member 720 are respectively attached to the first surface and the second surface of the cushioning member 610 to manufacture the panel cover 600. The first adhesive member 710 may be attached to the top surface of the cushioning member 610, and the second adhesive member 720 may be attached to the bottom surface of the cushioning member 610.

[0118] Subsequently, refer to Figure 9A first cover hole CH1 and a second cover hole CH2, spaced apart from each other, are defined in corresponding areas of the panel cover 600. The first cover hole CH1 and the second cover hole CH2 may be defined by cutting the first adhesive member 710, the buffer member 610 and the second adhesive member 720 by laser cutting. The first cover hole CH1 and the second cover hole CH2 may be defined as adjacent to each other but spaced apart from each other.

[0119] refer to Figure 10 The first cover hole CH1 and the second cover hole CH2 can be defined in the lower panel cover 600. The first adhesive member 710 and the second adhesive member 720 can be provided as a PSA. When the first cover hole CH1 and the second cover hole CH2 are defined by laser cutting, burrs BU protrude from the cutting planes of the first adhesive member 710 and the second adhesive member 720. (Reference) Figure 11 The rough edge BU is set in the first cover hole CH1 and the second cover hole CH2 of the panel bottom cover 600.

[0120] like Figure 12 As shown, the burrs BU disposed on the cutting planes of the first adhesive member 710 and the second adhesive member 720 may interfere with the first sensor device SED1 and the second sensor device SED2. Furthermore, foreign matter PM may adhere to the adhesive burrs BU. Therefore, when the first sensor device SED1 and the second sensor device SED2 are inserted into the panel hole PH, the first cover hole CH1, and the second cover hole CH2, the foreign matter PM attached to the burrs BU may be inserted along with the first sensor device SED1 and the second sensor device SED2, potentially causing recognition errors in the first sensor device SED1 and the second sensor device SED2.

[0121] Figure 13 This is a cross-sectional view showing another embodiment of the panel opening, first cover opening, and second cover opening of the foldable display device according to the present invention. Figure 14 It is shown Figure 13 An exemplary cross-sectional view of region A. Figure 15 It is shown Figure 13 Another exemplary cross-sectional view of region A. Figure 16 It is shown Figure 13 Another exemplary cross-sectional view of region A. Figure 17 and Figure 18 This is a cross-sectional view showing another embodiment of the manufacturing of the panel cover according to the present invention. Figure 19 It is shown Figure 17 and Figure 18 Plan view of the first cover hole on the lower panel cover. Figure 20 It is along Figure 19 The sectional view taken from line II-II'. Figure 21 It is shown Figure 17 and Figure 18 A cross-sectional view of the first cover hole of the panel cover having burrs on the first adhesive member and burrs on the second adhesive member.

[0122] Figures 13 to 16 Implementation methods and Figures 6 to 12 The difference in the implementation is that the distance between the first adhesive member 710 and the first sensor device SED1 is greater than the distance between the buffer member 610 and the first sensor device SED1. The configuration of the first cover hole CH1 will be described below, but the following description of the configuration of the first cover hole CH1 can also be directly applied to the configuration of the second cover hole CH2.

[0123] refer to Figure 13 and Figure 14 The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 of the lower panel cover 600 can be greater than the minimum distance d2 between the buffer member 610 and the first sensor device SED1. The minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 of the lower panel cover 600 can be greater than the minimum distance d2 between the buffer member 610 and the first sensor device SED1. The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be the same as the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1.

[0124] Specifically, the cutting plane CP10 of the first adhesive member 710, the cutting plane CP30 of the second adhesive member 720, and the cutting plane CP20 of the buffer member 610 forming the sidewall of the first cover hole CH1 can be arranged parallel to the sidewall SP10 of the first sensor device SED1. The minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1 can be greater than the minimum distance d2 between the cutting plane CP20 of the buffer member 610 and the sidewall SP10 of the first sensor device SED1. The minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1 can be greater than the minimum distance d2 between the cutting plane CP20 of the buffer member 610 and the sidewall SP10 of the first sensor device SED1. The minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the side wall SP10 of the first sensor device SED1 can be the same as the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the side wall SP10 of the first sensor device SED1.

[0125] Furthermore, the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 may be different from the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1.

[0126] refer to Figure 15 The minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the side wall SP10 of the first sensor device SED1, and the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the side wall SP10 of the first sensor device SED1, can both be greater than the minimum distance d2 between the cutting plane CP20 of the buffer member 610 and the side wall SP10 of the first sensor device SED1.

[0127] In this case, the minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1 can be less than the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1. That is, the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1 can be greater than the minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1.

[0128] refer to Figure 16 The minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1 can be greater than the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1. In other words, the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1 can be less than the minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1.

[0129] refer to Figure 17 and Figure 18 A first adhesive component 710, a second adhesive component 720, and a buffer component 610 are prepared. Subsequently, a first through-hole PPH1, a second through-hole PPH2, and a third through-hole PPH3 are defined in the first adhesive component 710, the buffer component 610, and the second adhesive component 720 respectively by laser cutting.

[0130] The diameter of the first through hole PPH1 of the first adhesive member 710 can be larger than the diameter of the second through hole PPH2 of the buffer member 610. The diameter of the third through hole PPH3 of the second adhesive member 720 can be larger than the diameter of the second through hole PPH2 of the buffer member 610. The diameter of the first through hole PPH1 of the first adhesive member 710 can be greater than, less than or equal to the diameter of the third through hole PPH3 of the second adhesive member 720.

[0131] Subsequently, refer to Figure 18 The first adhesive member 710, the buffer member 610, and the second adhesive member 720 are aligned such that the first through-hole PPH1, the second through-hole PPH2, and the third through-hole PPH3 overlap each other and together define a through-hole PPH. Then, the first adhesive member 710, the buffer member 610, and the second adhesive member 720 are joined together to manufacture the panel cover 600.

[0132] refer to Figure 19 and Figure 20 In the plan view, in the first cover hole CH1, the edges of the first adhesive member 710 and the edge of the buffer member 610 can be spaced apart from each other by a predetermined distance, and the edges of the second adhesive member 720 and the edge of the buffer member 610 can be spaced apart from each other by a predetermined distance.

[0133] Specifically, in embodiments, for example, the distance dd1 between the cutting plane CP10 of the first adhesive member 710 and the cutting plane CP20 of the buffer member 610 can be from about 0.01 mm to about 0.15 mm. In embodiments, for example, the distance dd2 between the cutting plane CP30 of the second adhesive member 720 and the cutting plane CP20 of the buffer member 610 can be from about 0.01 mm to about 0.15 mm. In embodiments, for example, when the distance dd1 between the cutting plane CP10 of the first adhesive member 710 and the cutting plane CP20 of the buffer member 610 is 0.01 mm or greater, it can prevent the burrs BU on the cutting plane CP10 of the first adhesive member 710 from protruding outward beyond the cutting plane CP20 of the buffer member 610. When the distance dd1 between the cutting plane CP10 of the first adhesive member 710 and the cutting plane CP20 of the buffer member 610 is 0.15 mm or less, it can prevent the adhesion of the first adhesive member 710 to the lower panel cover 600 from decreasing.

[0134] As mentioned above, the minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1, and the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1, can be greater than the minimum distance d2 between the cutting plane CP20 of the buffer member 610 and the sidewall SP10 of the first sensor device SED1. In this case, as Figure 21 As shown, this can prevent burrs BU on the cutting plane CP10 of the first adhesive member 710 and / or burrs BU on the cutting plane CP30 of the second adhesive member 720 from protruding outward beyond the cutting plane CP20 of the buffer member 610.

[0135] Even when the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 is different from the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1, since both the minimum distance d1 and d3 between the first adhesive member 710 and the first sensor device SED1, and the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1, are greater than the minimum distance d2 between the buffer member 610 and the first sensor device SED1, it is possible to prevent the burrs BU on the cutting plane CP10 of the first adhesive member 710 and / or the burrs BU on the cutting plane CP30 of the second adhesive member 720 from protruding outward beyond the cutting plane CP20 of the buffer member 610. Therefore, identification errors in the first sensor device SED1 can be prevented, and interference between the first sensor device SED1 and the burrs BU can also be prevented.

[0136] Figure 22 This is a cross-sectional view of an embodiment of the foldable display device according to the present invention.

[0137] Specifically, Figure 22 The display area DA and panel hole PH of the foldable display device 10 are shown. For convenience, in Figure 22 The protective layer 200, the panel cover 600, and the fourth adhesive member 740 are not shown.

[0138] refer to Figure 22 The display panel 100 may include a substrate 101, a buffer layer 105 disposed on the substrate 101, a thin film transistor (“TFT”) layer TFTL disposed on the buffer layer 105, a light-emitting element layer EML disposed on the TFT layer TFTL, and an encapsulation layer 290 disposed on the light-emitting element layer EML.

[0139] In some embodiments, for example, substrate 101 may include a polymer resin such as PI to be foldable, but the invention is not limited thereto.

[0140] A buffer layer 105 is disposed on the substrate 101. The buffer layer 105 may be disposed on a moisture-sensitive surface of the substrate 101 to protect the TFT layer (TFTL) and the light-emitting element layer (EML) from moisture penetrating through the substrate 101. The buffer layer 105 may comprise a plurality of alternately stacked inorganic layers. In one embodiment, the buffer layer 105 may be configured as a multilayer in which at least one inorganic layer selected from silicon nitride, silicon oxide nitride, silicon oxide, titanium oxide, and aluminum oxide layers is alternately stacked. In another embodiment, the buffer layer 105 may not be provided.

[0141] A TFT layer (TFTL) including a TFT and a capacitor (CST) can be disposed on a buffer layer (105). The TFT layer (TFTL) may include a semiconductor layer (110), a first insulating layer (121), a second insulating layer (122), a third insulating layer (123), a first gate conductive layer (130), a second gate conductive layer (140), and a data conductive layer (150).

[0142] Figure 22 The illustration shows a top-gate TFT in which the gate electrode GAT is disposed above the semiconductor layer 110, but the invention is not limited thereto. In alternative embodiments, the TFT can be configured as a bottom-gate TFT or a dual-gate TFT. In a bottom-gate TFT, the gate electrode GAT is disposed below the semiconductor layer 110, and in a dual-gate TFT, the gate electrode GAT is disposed both above and below the semiconductor layer 110.

[0143] The semiconductor layer 110 of the TFT can be disposed on the buffer layer 105. In an embodiment, for example, the semiconductor layer 110 may include polycrystalline silicon, monocrystalline silicon, low-temperature polycrystalline silicon, amorphous silicon, or oxide semiconductor. A light-blocking layer may be disposed between the buffer layer 105 and the semiconductor layer 110 to block external light from incident on the semiconductor layer 110.

[0144] A first insulating layer 121 may be disposed on the semiconductor layer 110. In an embodiment, the first insulating layer 121 may be an inorganic layer, such as a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0145] A first gate conductive layer 130, including a gate electrode GAT and a capacitor CST, can be disposed on a first insulating layer 121. The gate electrode GAT can overlap with the semiconductor layer 110 on a third-direction DR3. In an embodiment, the first gate conductive layer 130 can be configured as a single layer or multiple layers comprising molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), or alloys thereof.

[0146] The second insulating layer 122 may be disposed on the first gate conductive layer 130. In an embodiment, the second insulating layer 122 may be an inorganic layer, such as a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0147] A second gate conductive layer 140, including the second electrode CE2 of the capacitor CST, can be disposed on the second insulating layer 122. The second electrode CE2 of the capacitor CST can overlap with the first electrode CE1 of the capacitor CST on the third-direction DR3. In an embodiment, the second gate conductive layer 140 can be configured as a single layer or multiple layers comprising Mo, Al, Cr, Au, Ti, Ni, Nd, Cu or alloys thereof.

[0148] The third insulating layer 123 may be disposed on the second gate conductive layer 140. In an embodiment, the third insulating layer 123 may be an inorganic layer, such as a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0149] The data conductive layer 150, including the first electrode SD1 and the second electrode SD2 of the TFT, can be disposed on the third insulating layer 123. The first electrode SD1 and the second electrode SD2 of the TFT can be connected to the semiconductor layer 110 via contact holes penetrating the third insulating layer 123, the second insulating layer 122 and the first insulating layer 121.

[0150] A fourth insulating layer 124 may be disposed on the data conductive layer 150. The fourth insulating layer 124 may be a planarization layer that flattens the height difference provided by the TFT. In an embodiment, for example, the fourth insulating layer 124 may be an organic layer comprising acrylic resin, epoxy resin, phenolic resin, polyamide resin, or PI resin.

[0151] The light-emitting element layer (EML) is disposed on the TFT layer (TFTL). The light-emitting element layer (EML) may include an anode electrode 160, a light-emitting layer 170, and a cathode electrode 180.

[0152] An anode electrode 160 is disposed on the fourth insulating layer 124. The anode electrode 160 can be connected to the second electrode SD2 of the TFT via a contact hole penetrating the fourth insulating layer 124. The anode electrode 160 can at least partially overlap with the light-emitting region EMA.

[0153] In a top-emission structure in which light is emitted from the light-emitting layer 170 toward the cathode electrode 180, the anode electrode 160 may be configured as a single layer comprising Mo, Ti, Cu or Al, or may comprise a metallic material with high reflectivity, such as a stack of Al and Ti (e.g., Ti / Al / Ti) or a stack of Al and indium tin oxide (“ITO”) (e.g., ITO / Al / ITO), a silver (Ag)-palladium (Pd)-copper (Cu) (“APC”) alloy or a stack of APC alloy and ITO (e.g., ITO / APC / ITO).

[0154] In a bottom-emitting structure that emits light from the light-emitting layer 170 toward the anode electrode 160, the anode electrode 160 may comprise a transparent conductive oxide (“TCO”) material (such as ITO or indium zinc oxide (“IZO”)) capable of transmitting light through it, or a semi-transparent metallic material (such as magnesium (Mg), Ag, or alloys thereof). When the anode electrode 160 comprises a semi-transparent metallic material, emission efficiency can be improved due to the microcavity.

[0155] A dam 126 may be provided on the anode electrode 160. The opening exposing the anode electrode 160 may be defined in the dam 126. Therefore, the luminescent region EMA and the non-luminescent region NEM may be defined by the dam 126.

[0156] A spacer 127 may be provided on the embankment 126. The spacer 127 can maintain the gap between the embankment 126 and the element provided above the spacer 127.

[0157] A light-emitting layer 170 is disposed on the portion of the anode electrode 160 exposed by the embankment 126. The light-emitting layer 170 may include an organic material layer. The organic material layer of the light-emitting layer 170 may include an organic light-emitting layer, and may also include a hole injection / transport layer and / or an electron injection / transport layer.

[0158] The cathode electrode 180 can be disposed on the light-emitting layer 170. The cathode electrode 180 can be configured to be common to all pixels.

[0159] In the top-emitting structure, the cathode electrode 180 may include a TCO material (such as ITO or IZO) or a semi-transparent metallic material (such as Mg, Ag, or alloys thereof) capable of transmitting light through it. When the cathode electrode 180 includes a semi-transparent metallic material, the emission efficiency may be improved due to the microcavity.

[0160] In the bottom emission structure, the cathode electrode 180 may be configured as a single layer comprising Mo, Ti, Cu or Al, or may comprise a metallic material with high reflectivity, such as a stack of Al and Ti (e.g., Ti / Al / Ti) or a stack of Al and ITO (e.g., ITO / Al / ITO), an APC alloy or a stack of APC alloy and ITO (e.g., ITO / APC / ITO).

[0161] An encapsulation layer 290, comprising a first inorganic layer 291, a first organic layer 292, and a second inorganic layer 293, is disposed on the cathode electrode 180. The first organic layer 292 can be sealed by the first inorganic layer 291 and the second inorganic layer 293.

[0162] The first inorganic layer 291 and the second inorganic layer 293 may be configured as a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer, but the present invention is not limited thereto. In embodiments, for example, the first organic layer 292 may include acrylic resin, epoxy resin, phenolic resin, polyamide resin, or PI resin, but the present invention is not limited thereto.

[0163] The display panel 100 may further include a touch layer TSP disposed on the encapsulation layer 290. The touch layer TSP may include sensor electrodes for sensing touch input. In an alternative embodiment, the touch layer TSP may be a separate panel or film and may be attached to the display panel 100.

[0164] A polarizer layer 300 may be provided on the touch layer TSP of the display panel 100. An impact absorption layer 400 may be provided on the polarizer layer 300, and a window member 500 may be provided on the impact absorption layer 400.

[0165] A dam structure DAM can be provided around the panel aperture PH. The dam structure DAM may include stacked insulating layers 105, 121, 122, 123, 124, 126, and 127. A recess TCH defined by removing insulating layers 105, 121, 122, 123, 124, 126, and 127 and metal layers 130, 140, 150, 160, and 180 can be provided between the dam structure DAM and the light-emitting region EMA. At least a portion of the encapsulation layer 290 can be provided in the recess TCH. In an embodiment, for example, the first organic layer 292 of the encapsulation layer 290 may reach the dam structure DAM but not in the aperture region HLA between the dam structure DAM and the panel aperture PH. That is, the first organic layer 292 can be prevented from overflowing the dam structure DAM and entering the aperture region HLA. Figure 22 The diagram shows the first inorganic layer 291 and the second inorganic layer 293 of the encapsulation layer 290 terminating above the dam structure DAM, but the invention is not limited thereto. In an alternative embodiment, the first inorganic layer 291 and the second inorganic layer 293 of the encapsulation layer 290 may be disposed in the hole region HLA between the dam structure DAM and the panel hole PH.

[0166] The aperture region HLA can overlap with the dam structure DAM on the third-direction DR3, but not with the light-emitting region EMA. Therefore, no image can be displayed in the aperture region HLA. A light-blocking pattern 501 can be provided in the aperture region HLA. The light-blocking pattern 501 can overlap with the dam structure DAM on the third-direction DR3. The light-blocking pattern 501 can overlap with the edge of the panel aperture PH on the third-direction DR3.

[0167] At least one organic layer (i.e., a second organic layer 228 and a third organic layer 229) may be further disposed on the encapsulation layer 290 to planarize the space between the dam structure DAM and the panel aperture PH in the aperture region HLA. In an embodiment, for example, the second organic layer 228 may be disposed on the second inorganic layer 293, and the third organic layer 229 may be disposed on the second organic layer 228. The second organic layer 228 and the third organic layer 229 can planarize the space between the dam structure DAM and the panel aperture PH in the aperture region HLA.

[0168] Figure 23 This is a cross-sectional view showing another embodiment of the first cover hole and the second cover hole of the foldable display device according to the present invention. Figure 24 It is shown Figure 23 An enlarged sectional view of region B.

[0169] Figure 23 and Figure 24 Implementation methods and Figure 13 and Figure 14 The difference in the implementation method is that the distance between the buffer member 610 of the lower panel cover 600 and the first sensor device SED1 increases as the distance from the display module 11 decreases.

[0170] refer to Figure 23 and Figure 24 The distance between the buffer member 610 of the lower panel cover 600 and the first sensor device SED1 can gradually increase as the distance from the display module 11 decreases. In other words, the diameter of the first cover hole CH1 in the lower panel cover 600 can gradually increase as the distance from the display module 11 decreases.

[0171] The buffer member 610 may have an inclined cutting plane CP20 depending on how it is cut by laser cutting. In an embodiment, such as Figure 23 and Figure 24 As shown, when laser cutting is performed on the surface of the buffer member 610 (i.e., the top surface of the buffer member 610 adjacent to the display module 11), for example, the distance between the buffer member 610 of the panel cover 600 and the first sensor device SED1 can gradually increase as the distance from the display module 11 decreases.

[0172] The cutting plane CP10 of the first adhesive member 710 and the cutting plane CP30 of the second adhesive member 720 can be set parallel to the side wall SP10 of the first sensor device SED1. The cutting plane CP20 of the buffer member 610 can face the side wall SP10 of the first sensor device SED1, but is not parallel to the side wall SP10 of the first sensor device SED1.

[0173] The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 of the panel cover 600 can be greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1. The minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 of the panel cover 600 can be greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1. The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be the same as or different from the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1.

[0174] Specifically, the distance between the cutting plane CP20 of the buffer member 610 and the first sensor device SED1 can gradually increase as the distance from the display module 11 decreases. The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1. Furthermore, the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 can be greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1.

[0175] Furthermore, the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be the same as or different from the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1. In one embodiment, for example, the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be greater than the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1. In another example, the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be less than the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1.

[0176] As described above, the distance between the buffer member 610 and the first sensor device SED1 can gradually increase as the distance from the display module 11 decreases. In this case, it can prevent the burrs BU on the cutting plane CP10 of the first adhesive member 710 and / or the burrs BU on the cutting plane CP30 of the second adhesive member 720 from protruding outward beyond the cutting plane CP20 of the buffer member 610.

[0177] Even if the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 is different from the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1, since both the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 and the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 are greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1, it is also possible to prevent the burrs BU on the cutting plane CP10 of the first adhesive member 710 and / or the burrs BU on the cutting plane CP30 of the second adhesive member 720 from protruding outward beyond the cutting plane CP20 of the buffer member 610.

[0178] Figure 25 This is an enlarged cross-sectional view showing another embodiment of the first cover hole of the foldable display device according to the present invention.

[0179] Figure 25 Implementation methods and Figure 23 and Figure 24 The difference in the implementation method is that the distance between the first adhesive member 710 and the first sensor device SED1 increases as the distance from the display module 11 decreases.

[0180] refer to Figure 25 The distance between the buffer member 610 of the lower panel cover 600 and the first sensor device SED1 can gradually increase as the distance from the display module 11 decreases. The distance between the first sensor device SED1 and the first adhesive member 710 disposed on the buffer member 610 can gradually increase as the distance from the display module 11 decreases.

[0181] The cutting plane CP10 of the first adhesive member 710 can be tilted according to the direction in which the first adhesive member 710 is cut by laser cutting. In an embodiment, such as Figure 25 As shown, for example, when laser cutting is performed on the surface of the buffer member 610 (i.e., the top surface of the buffer member 610 adjacent to the display module 11), the distance between the buffer member 610 of the panel cover 600 and the first sensor device SED1 can gradually increase as the distance from the display module 11 decreases. The tilt angle of the cutting plane CP10 of the first adhesive member 710 can be the same as the tilt angle of the cutting plane CP20 of the buffer member 610, but the invention is not limited thereto. In an alternative embodiment, the tilt angle of the cutting plane CP10 of the first adhesive member 710 can be greater than or less than the tilt angle of the cutting plane CP20 of the buffer member 610.

[0182] The cutting plane CP10 of the first adhesive member 710 and the cutting plane CP20 of the buffer member 610 may face the sidewall SP10 of the first sensor device SED1, but are not parallel to the sidewall SP10 of the first sensor device SED1. The cutting plane CP30 of the second adhesive member 720 may face the sidewall SP10 of the first sensor device SED1 and is parallel to the sidewall SP10 of the first sensor device SED1. The cutting plane CP10 of the first adhesive member 710 and the cutting plane CP20 of the buffer member 610 may contact and align with each other, but the invention is not limited thereto. In an embodiment, the cutting plane CP10 of the first adhesive member 710 may be spaced apart from the cutting plane CP20 of the buffer member 610.

[0183] The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 of the panel cover 600 can be the same as the maximum distance d4 between the buffer member 610 and the first sensor device SED1. The minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 can be greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1. Therefore, even when burrs BU are provided on the cutting plane CP10 of the first adhesive member 710 and / or the cutting plane CP30 of the second adhesive member 720, it is possible to prevent the burrs BU from protruding outward beyond the cutting plane CP20 of the buffer member 610.

[0184] Specifically, the distance between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1 can gradually increase as the distance from the display module 11 decreases. The minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1 can be the same as the maximum distance d4 between the cutting plane CP20 of the buffer member 610 and the sidewall SP10 of the first sensor device SED1. The minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1 can be greater than the maximum distance d4 between the cutting plane CP20 of the buffer member 610 and the sidewall SP10 of the first sensor device SED1.

[0185] The minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1 can be the same as or different from the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1. In one embodiment, for example, the minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1 can be greater than the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1. In another example, the minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the sidewall SP10 of the first sensor device SED1 can be less than the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1.

[0186] As mentioned above, the distance between the buffer member 610 and the first sensor device SED1 can gradually increase as the distance from the display module 11 decreases. In this case, the distance between the first adhesive member 710 and the first sensor device SED1 can also gradually increase as the distance from the display module 11 decreases. Therefore, even when burrs BU are provided on the cutting plane CP10 of the first adhesive member 710 and / or the cutting plane CP30 of the second adhesive member 720, it is possible to prevent the burrs BU from protruding outward beyond the cutting plane CP20 of the buffer member 610.

[0187] Figure 26 This is an enlarged cross-sectional view showing another embodiment of the first cover hole of the foldable display device according to the present invention. Figure 27 This is an enlarged cross-sectional view showing another embodiment of the first cover hole of the foldable display device according to the present invention.

[0188] Figure 26 Implementation methods and Figure 24 and Figure 25 The difference in the implementation method is that the distance between the buffer member 610 of the lower panel cover 600 and the first sensor device SED1 decreases as the distance from the display module 11 decreases.

[0189] refer to Figure 26 The distance between the buffer member 610 of the lower panel cover 600 and the first sensor device SED1 can gradually decrease as the distance from the display module 11 decreases. In other words, the diameter of the first cover hole CH1 in the lower panel cover 600 can gradually decrease as the distance from the display module 11 decreases.

[0190] The cutting plane CP20 of the buffer member 610 can be tilted according to the direction in which the buffer member 610 is cut by laser cutting. In an embodiment, for example, as Figure 26 As shown, when laser cutting is performed on the surface of the buffer member 610 (i.e., the bottom surface of the buffer member 610, wherein the bottom surface of the buffer member 610 is opposite to the surface of the buffer member 610 adjacent to the display module 11), the distance between the buffer member 610 of the panel cover 600 and the first sensor device SED1 can gradually decrease as the distance from the display module 11 decreases.

[0191] The cutting plane CP10 of the first adhesive member 710 and the cutting plane CP30 of the second adhesive member 720 can be set parallel to the side wall SP10 of the first sensor device SED1. The cutting plane CP20 of the buffer member 610 can face the side wall SP10 of the first sensor device SED1, but is not parallel to the side wall SP10 of the first sensor device SED1.

[0192] The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1. The minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 can be greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1. The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be the same as or different from the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1.

[0193] Specifically, the distance between the cutting plane CP20 of the buffer member 610 and the side wall SP10 of the first sensor device SED1 can gradually decrease as the distance from the display module 11 decreases. The minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the side wall SP10 of the first sensor device SED1 can be greater than the maximum distance d4 between the cutting plane CP20 of the buffer member 610 and the side wall SP10 of the first sensor device SED1. The minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the side wall SP10 of the first sensor device SED1 can be greater than the maximum distance d4 between the cutting plane CP20 of the buffer member 610 and the side wall SP10 of the first sensor device SED1.

[0194] The minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the side wall SP10 of the first sensor device SED1 can be the same as or different from the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the side wall SP10 of the first sensor device SED1.

[0195] As mentioned above, the distance between the buffer member 610 and the first sensor device SED1 can gradually decrease as the distance from the display module 11 decreases. In this case, even if burrs BU are provided on the cutting plane CP10 of the first adhesive member 710 and / or the cutting plane CP30 of the second adhesive member 720, the burrs BU can be prevented from protruding outward beyond the cutting plane CP20 of the buffer member 610.

[0196] Even if the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 is different from the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1, since both the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 and the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 are greater than the maximum distance d4 between the cutting plane CP20 of the buffer member 610 and the side wall SP10 of the first sensor device SED1, it is also possible to prevent the burrs BU on the cutting plane CP10 of the first adhesive member 710 and / or the burrs BU on the cutting plane CP30 of the second adhesive member 720 from protruding outward beyond the cutting plane CP20 of the buffer member 610.

[0197] Figure 27 This is an enlarged cross-sectional view showing another embodiment of the first cover hole of the foldable display device according to the present invention.

[0198] Figure 27 Implementation methods and Figure 26 The difference in the implementation method is that the distance between the second adhesive member 720 and the first sensor device SED1 decreases as the distance from the display module 11 decreases.

[0199] refer to Figure 27 The distance between the buffer member 610 of the lower panel cover 600 and the first sensor device SED1 can gradually decrease as the distance from the display module 11 decreases. The distance between the first sensor device SED1 and the second adhesive member 720 disposed below the buffer member 610 can also decrease as the distance from the display module 11 decreases.

[0200] The cutting plane CP30 of the second adhesive member 720 can be tilted according to the direction in which the second adhesive member 720 is cut by laser cutting. In an embodiment, for example, as Figure 27As shown, when laser cutting is performed on the surface of the second adhesive member 720 (i.e., the bottom surface of the second adhesive member 720, wherein the bottom surface of the second adhesive member 720 is opposite to the surface of the second adhesive member 720 adjacent to the display module 11), the distance between the second adhesive member 720 and the first sensor device SED1 can gradually decrease as the distance from the display module 11 decreases. The tilt angle of the cutting plane CP30 of the second adhesive member 720 can be the same as the tilt angle of the cutting plane CP20 of the buffer member 610, but the present invention is not limited thereto. In an optional embodiment, the tilt angle of the cutting plane CP30 of the second adhesive member 720 can be greater than or less than the tilt angle of the cutting plane CP20 of the buffer member 610.

[0201] The cutting plane CP30 of the second adhesive member 720 and the cutting plane CP20 of the buffer member 610 may face the sidewall SP10 of the first sensor device SED1, but are not parallel to the sidewall SP10 of the first sensor device SED1. The cutting plane CP10 of the first adhesive member 710 may face the sidewall SP10 of the first sensor device SED1 and is parallel to the sidewall SP10 of the first sensor device SED1. The cutting plane CP30 of the second adhesive member 720 and the cutting plane CP20 of the buffer member 610 may contact and align with each other, but the invention is not limited thereto. In another embodiment, the cutting plane CP30 of the second adhesive member 720 may be spaced apart from the cutting plane CP20 of the buffer member 610.

[0202] The minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 can be the same as the maximum distance d4 between the buffer member 610 and the first sensor device SED1. The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1. Therefore, even when burrs BU are provided on the cutting plane CP10 of the first adhesive member 710 and / or the cutting plane CP30 of the second adhesive member 720, it is possible to prevent the burrs BU from protruding outward beyond the cutting plane CP20 of the buffer member 610.

[0203] Specifically, the distance between the cutting plane CP30 of the second adhesive member 720 and the sidewall SP10 of the first sensor device SED1 can gradually decrease as the distance from the display module 11 decreases. The minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 can be the same as the maximum distance d4 between the buffer member 610 and the first sensor device SED1. The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be greater than the maximum distance d4 between the buffer member 610 and the first sensor device SED1.

[0204] The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 may be the same as or different from the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1.

[0205] Figure 28 This is an enlarged cross-sectional view showing another embodiment of the first cover hole of the foldable display device according to the present invention.

[0206] Figure 28 Implementation methods and Figure 26 and Figure 27 The difference in the implementation method is that the cutting plane CP20 of the buffer member 610 is curved.

[0207] refer to Figure 28 The cutting plane CP20 of the buffer member 610 of the lower panel cover 600 can be curved. The cutting plane CP20 of the buffer member 610 can have a maximum distance d4 from the first sensor device SED1 at the center of the thickness of the buffer member 610. The cutting plane CP20 of the buffer member 610 can have a minimum distance d5 from the first sensor device SED1 at the top or bottom of the buffer member 610.

[0208] The first cover hole CH1 of the buffer member 610 can be defined by pressure and laser irradiation via a laser irradiation device. The buffer member 610 can be compressed and cut by pressure via a laser irradiation device, and therefore, the cutting plane CP20 of the buffer member 610 can be configured to be curved. In an embodiment, for example, the cutting plane CP20 of the buffer member 610 can be recessed in a direction away from the first sensor device SED1. Figure 28 The diagram shows that the cutting plane CP20 of the buffer member 610 has a uniform curvature, but the invention is not limited thereto. In an alternative embodiment, the cutting plane CP20 of the buffer member 610 may have a non-uniform curvature.

[0209] The cutting plane CP10 of the first adhesive member 710 and the cutting plane CP30 of the second adhesive member 720 can face the sidewall SP10 of the first sensor device SED1 and are parallel to the sidewall SP10 of the first sensor device SED1. The cutting plane CP10 of the first adhesive member 710 can be spaced apart from the cutting plane CP20 of the buffer member 610, and the cutting plane CP30 of the second adhesive member 720 can be spaced apart from the cutting plane CP20 of the buffer member 610.

[0210] The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be greater than the minimum distance d5 between the buffer member 610 and the first sensor device SED1. The minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 can be greater than the minimum distance d5 between the buffer member 610 and the first sensor device SED1. Therefore, even if burrs BU are provided on the cutting plane CP10 of the first adhesive member 710 and / or the cutting plane CP30 of the second adhesive member 720, it is possible to prevent the burrs BU from protruding outward beyond the cutting plane CP20 of the buffer member 610.

[0211] Specifically, the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 can be greater than the minimum distance d5 between the buffer member 610 and the first sensor device SED1. The minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 can be greater than the minimum distance d5 between the buffer member 610 and the first sensor device SED1.

[0212] The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 may be the same as or different from the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1.

[0213] Already referenced Figures 13 to 16 as well as Figures 23 to 28 The components between the panel bottom cover 600 and the first sensor device SED1 are described using the first cover hole CH1 as an example, but the above description can be directly applied to the second cover hole CH2.

[0214] Figure 29 This is a cross-sectional view showing another embodiment of the first cover hole and the second cover hole of the foldable display device according to the present invention. Figure 30 It is shown Figure 29 An enlarged sectional view of region C.

[0215] Figure 29 and Figure 30 Implementation methods and Figures 1 to 28 The difference in the implementation is that the minimum distance d6 between the protective layer 200 and the first sensor device SED1 is shorter than the minimum distance d2 between the buffer member 610 and the first sensor device SED1 and the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1.

[0216] refer to Figure 29 and Figure 30The lower panel cover 600 can be attached to the display module 11. The lower panel cover 600 can be attached to the surface of the protective layer 200 of the display module 11. The first adhesive member 710 of the lower panel cover 600 can be attached to the surface of the protective layer 200.

[0217] The protective layer 200 may be spaced apart from the first sensor device SED1 in the panel hole PH of the display module 11. The protective layer 200 may have a minimum distance d6 from the first sensor device SED1. The minimum distance d6 between the protective layer 200 and the first sensor device SED1 may be less than the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1, the minimum distance d2 between the buffer member 610 and the first sensor device SED1, and the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1.

[0218] The panel hole PH of the display module 11 and the first cover hole CH1 of the lower panel cover 600 can overlap each other. When the display module 11 and the lower panel cover 600 are joined together, the first cover hole CH1 can have a larger diameter than the panel hole PH in order to be easily aligned with the panel hole PH.

[0219] Specifically, the minimum distance d6 between the protective layer 200 and the first sensor device SED1 can be less than the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1. The minimum distance d6 between the protective layer 200 and the first sensor device SED1 can be less than the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1. The minimum distance d6 between the protective layer 200 and the first sensor device SED1 can be less than the minimum distance d2 between the buffer member 610 and the first sensor device SED1.

[0220] As described above, since the minimum distance d6 is less than the minimum distance d1 between the first adhesive member 710 and the first sensor device SED1, the minimum distance d2 between the buffer member 610 and the first sensor device SED1, and the minimum distance d3 between the second adhesive member 720 and the first sensor device SED1, the bonding between the display module 11 and the panel cover 600 can be facilitated.

[0221] exist Figure 29 and Figure 30 The implementation method has been referenced above. Figures 13 to 16 as well as Figures 23 to 28 The described component can be connected between the panel cover 600 and the first sensor device SED1.

[0222] Figure 31 This is a cross-sectional view showing another embodiment of the first cover hole and the second cover hole of the foldable display device according to the present invention.

[0223] Figure 31 Implementation methods and Figures 1 to 30 The difference in the implementation is that the second sensor device SED2 and the first adhesive member 710 in the second cover hole CH2 overlap each other.

[0224] refer to Figure 31 The lower cover 600 of the panel defines a first cover hole CH1 and a second cover hole CH2. A first sensor device SED1 is disposed in the first cover hole CH1, and a second sensor device SED2 is disposed in the second cover hole CH2. The second cover hole CH2 may be spaced apart from the first cover hole CH1.

[0225] The second cover hole CH2 can be a hole that penetrates the buffer member 610 of the lower panel cover 600 and the second adhesive member 720. The second cover hole CH2 may not penetrate the first adhesive member 710 and may overlap with the first adhesive member 710.

[0226] The second sensor device SED2 disposed in the second cover hole CH2 can be a proximity sensor or an illumination sensor. Since the first adhesive member 710 is transparent, it does not degrade the sensing characteristics of, for example, the proximity sensor or illumination sensor. Conversely, the first sensor device SED1 disposed in the first cover hole CH1 and the panel hole PH can be a camera sensor. Since a camera sensor requires as much light as possible, the first sensor device SED1 can penetrate not only the lower panel cover 600 but also the display module 11. Therefore, the first adhesive member 710 and the second sensor device SED2 disposed in the second cover hole CH2 can overlap each other.

[0227] The above has been referenced Figures 13 to 16 as well as Figures 23 to 28 The described elements can be directly applied to their corresponding portions between the second adhesive member 720 / buffer member 610 and the second sensor device SED2 in the second cover hole CH2.

[0228] Figure 32 This is a cross-sectional view showing another embodiment of the first cover hole and the second cover hole of the foldable display device according to the present invention. Figure 33 It is shown Figure 32 A cross-sectional view of region D.

[0229] Figure 32 and Figure 33 Implementation methods and Figures 1 to 31 The difference in the implementation method is that a metal plate 910 is also provided to be attached to the bottom of the panel cover 600.

[0230] refer to Figure 32 and Figure 33The metal plate 910 can be attached to the bottom of the panel cover 600. The metal plate 910 can be attached to the surface of the second adhesive member 720 of the panel cover 600.

[0231] The metal plate 910 can be a heat dissipation component or a support component. The metal plate 910 may define a first plate hole MH1 and a second plate hole MH2. A first sensor device SED1 is disposed in the first plate hole MH1, and a second sensor device SED2 is disposed in the second plate hole MH2. The first plate hole MH1 may overlap with the panel hole PH and the first cover hole CH1. The second plate hole MH2 may overlap with the second cover hole CH2.

[0232] The diameter of the first plate hole MH1 can be smaller than the diameter of the panel hole PH and the diameter of the first cover hole CH1. The diameter of the second plate hole MH2 can be smaller than the diameter of the second cover hole CH2. The first plate hole MH1, the panel hole PH, and the first cover hole CH1 will be described below.

[0233] The minimum distance d6 between the protective layer 200 and the first sensor device SED1 in the panel hole PH can be greater than the minimum distance d7 between the metal plate 910 and the first sensor device SED1 in the first plate hole MH1. Specifically, the minimum distance d6 between the cutting plane CP50 of the protective layer 200 and the sidewall SP10 of the first sensor device SED1 in the panel hole PH can be greater than the minimum distance d7 between the cutting plane CP60 of the metal plate 910 and the sidewall SP10 of the first sensor device SED1.

[0234] The minimum distance d1 between the first adhesive member 710 and the first sensor device SED1 in the first cover hole CH1 can be greater than the minimum distance d7 between the metal plate 910 and the first sensor device SED1 in the first plate hole MH1. Specifically, the minimum distance d1 between the cutting plane CP10 of the first adhesive member 710 and the side wall SP10 of the first sensor device SED1 can be greater than the minimum distance d7 between the cutting plane CP60 of the metal plate 910 and the side wall SP10 of the first sensor device SED1.

[0235] The minimum distance d2 between the buffer member 610 and the first sensor device SED1 in the first cover hole CH1 can be greater than the minimum distance d7 between the metal plate 910 and the first sensor device SED1 in the first plate hole MH1. Specifically, the minimum distance d2 between the cutting plane CP20 of the buffer member 610 and the side wall SP10 of the first sensor device SED1 can be greater than the minimum distance d7 between the cutting plane CP60 of the metal plate 910 and the side wall SP10 of the first sensor device SED1.

[0236] The minimum distance d3 between the second adhesive member 720 and the first sensor device SED1 in the first cover hole CH1 can be greater than the minimum distance d7 between the metal plate 910 and the first sensor device SED1 in the first plate hole MH1. Specifically, the minimum distance d3 between the cutting plane CP30 of the second adhesive member 720 and the side wall SP10 of the first sensor device SED1 can be greater than the minimum distance d7 between the cutting plane CP60 of the metal plate 910 and the side wall SP10 of the first sensor device SED1.

[0237] Since the diameter of the first plate hole MH1 of the metal plate 910 is smaller than the diameter of the first cover hole CH1 and the diameter of the panel hole PH, and the diameter of the second plate hole MH2 of the metal plate 910 is smaller than the diameter of the second cover hole CH2, foreign matter PM can be prevented from seeping into the first cover hole CH1, the second cover hole CH2 and the panel hole PH.

[0238] In concluding this detailed description, those skilled in the art will understand that many variations and modifications can be made to the preferred embodiments without substantially departing from the principles of the invention. Therefore, the preferred embodiments of the invention disclosed herein are used in a general and descriptive sense only, and not for limiting purposes.

Claims

1. A foldable display device, including: The display module has a panel hole defined in it; The sensor device is disposed in the hole in the panel; as well as A lower panel cover is disposed on the surface of the display module, and a cover hole is defined in the lower panel cover for the sensor device to be disposed in the cover hole. The lower panel cover includes: Buffer components; A first adhesive member attaches the buffer member to the surface of the display module; and A second adhesive member, wherein the buffer member is inserted between the first adhesive member and the second adhesive member. Wherein, the minimum distance between the first adhesive member and the sensor device is greater than the minimum distance between the buffer member and the sensor device.

2. The foldable display device according to claim 1, wherein, The minimum distance between the second adhesive member and the sensor device in the cover hole is greater than the minimum distance between the buffer member and the sensor device.

3. The foldable display device according to claim 2, wherein, The minimum distance between the first adhesive member and the sensor device is less than or equal to the minimum distance between the second adhesive member and the sensor device.

4. The foldable display device according to claim 3, wherein, The distance between the buffer member and the sensor device in the cover hole increases as the distance from the display module decreases.

5. The foldable display device according to claim 4, wherein, The distance between the first adhesive member and the sensor device in the cover hole increases as the distance from the display module decreases.

6. The foldable display device according to claim 5, wherein, The cutting planes of the first adhesive member and the cutting planes of the buffer member contact and align with each other in the cover hole.

7. The foldable display device according to claim 3, wherein, The distance between the buffer member and the sensor device in the cover hole decreases as the distance from the display module decreases.

8. The foldable display device according to claim 7, wherein, The cutting planes of the second adhesive member and the cutting planes of the buffer member contact and align with each other in the cover hole.

9. The foldable display device according to claim 1, wherein, The minimum diameter of the cover hole is greater than the maximum diameter of the panel hole.

10. The foldable display device according to claim 1, wherein, The display module includes a display panel and a protective layer. The display panel includes pixels for displaying images, and the protective layer is disposed on the surface of the display panel.

11. The foldable display device according to claim 10, wherein, The protective layer contacts the first adhesive member, and The minimum distance between the protective layer and the sensor device is less than the minimum distance between the first adhesive member and the sensor device.

12. The foldable display device according to claim 1, further comprising: The metal sheet is attached to the surface of the lower panel cover via the second adhesive member. The metal plate has a hole that overlaps with the cover hole.

13. The foldable display device according to claim 12, wherein, The sensor device is disposed in the hole of the plate, and The minimum distance between the metal plate and the sensor device is less than one of the minimum distance between the first adhesive member and the sensor device, the minimum distance between the second adhesive member and the sensor device, and the minimum distance between the buffer member and the sensor device.

14. Foldable display devices, including: The display module has a panel hole defined in it; A first sensor device is disposed in the hole in the panel; Second sensor device; as well as A lower panel cover is disposed on the surface of the display module, and the lower panel cover defines a first cover hole and a second cover hole, such that the first sensor device is disposed in the first cover hole and the second sensor device is disposed in the second cover hole. The lower panel cover includes: Buffer components; and A first adhesive member attaches the buffer member to the surface of the display module. Wherein, the minimum distance between the first adhesive member and the first sensor device is greater than the minimum distance between the buffer member and the first sensor device, and The first adhesive component overlaps with the second cover hole.

15. The foldable display device according to claim 14, wherein, The lower panel cover also includes a second adhesive member, and the buffer member is inserted between the first adhesive member and the second adhesive member.

16. The foldable display device according to claim 15, wherein, The second cover hole penetrates the second adhesive member and the buffer member.

17. The foldable display device according to claim 15, wherein, The minimum distance between the second adhesive member and the first sensor device is greater than the minimum distance between the buffer member and the first sensor device.

18. The foldable display device according to claim 15, wherein, The minimum distance between the second adhesive member and the second sensor device is greater than the minimum distance between the buffer member and the second sensor device.

19. The foldable display device according to claim 14, wherein, The second sensor device is spaced apart from the first adhesive member in the thickness direction of the lower panel cover.

Images