Display device and electronic device including the same

Abstract

To provide a display device with improved reliability, and an electronic device including the same.SOLUTION: A display device according to one example of the present invention includes: a display panel where a first region, and second and third regions which are apart from each other with the first region interposed therebetween are defined; a barrier layer disposed under the display panel; a support layer disposed under the barrier layer and having a plurality of openings defined in a region overlapping with the first region; a cushion layer apart from the display panel with the support layer interposed therebetween; and a barrier adhesive layer including a first barrier part disposed between the barrier layer and the support layer, and a second barrier part disposed between the barrier layer and the support layer. The first barrier part and the second barrier part are apart from each other with the openings interposed therebetween.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a display device and an electronic device including the same, and to a foldable display device and an electronic device including the same. [Background technology]

[0002] An electronic device provides information to a user by displaying various images on a display screen. In general, an electronic device displays information within an assigned screen. Recently, flexible electronic devices including foldable flexible display panels have been developed. Flexible electronic devices can be folded or bent, unlike rigid electronic devices. Flexible electronic devices, which can be variably changed in shape, can be carried regardless of the conventional screen size, improving user convenience. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Korean Patent Publication No. 10-2019-0124844 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a display device with improved reliability and an electronic device including the same. [Means for solving the problem]

[0005] A display device according to an embodiment of the present invention includes a display panel having a first region, a second region and a third region defined therein, the second region and the third region being spaced apart from each other with the first region therebetween; a barrier layer disposed under the display panel; a support layer disposed under the barrier layer, the support layer having a plurality of openings defined in a region overlapping the first region; a cushion layer separated from the display panel with the support layer in between; and a barrier adhesive layer including a first barrier portion disposed between the barrier layer and the support layer and a second barrier portion disposed between the barrier layer and the support layer, the first barrier portion and the second barrier portion being spaced apart with the plurality of openings in between.

[0006] The support layer may overlap the first region, the second region, and the third region, the cushion layer may have an area smaller than an area of ​​the support layer, and the barrier layer may have an area smaller than an area of ​​the support layer.

[0007] The cushion layer may include a first cushion layer and a second cushion layer spaced apart from the first cushion layer, and on a plane, the gap between the first cushion layer and the second cushion layer may overlap the first region.

[0008] The elastic modulus of the support layer may be higher than the elastic modulus of the cushion layer.

[0009] The thickness of the barrier adhesion layer may be less than the thickness of the barrier layer.

[0010] The barrier layer may be a colored polyimide film.

[0011] The barrier layer may include a light blocking material.

[0012] On a plan view, the barrier layer may overlap a portion of the support layer, and another portion of the support layer may not overlap the barrier layer.

[0013] The cushion layer may have a thickness greater than a thickness of the barrier layer.

[0014] The display device may further include a top adhesive layer disposed between the display panel and the barrier layer and attached to the barrier layer, the top adhesive layer having a thickness greater than a thickness of the barrier adhesive layer.

[0015] A first distance between the first barrier portion and the second barrier portion may be greater than a second distance between a first sidewall of a first opening among the plurality of openings that is closest to the second region and a second sidewall of a second opening among the plurality of openings that is closest to the third region.

[0016] A distance between the first barrier portion and the second barrier portion may be greater than a width of an area in which the plurality of openings are defined.

[0017] A display area and a non-display area surrounding the display area may be defined on the display panel, a hole overlapping the display area may be defined in the support layer, and the cushion layer may be spaced apart from the hole.

[0018] According to an embodiment of the present invention, an electronic device includes a display panel having a foldable folding area defined therein; a barrier layer disposed under the display panel; a support layer disposed under the barrier layer, the support layer having a first elastic modulus and a plurality of openings defined in an area overlapping the folding area; and a cushion layer disposed under the support layer, the support layer having a second elastic modulus lower than the first elastic modulus, the cushion layer including a first cushion layer and a second cushion layer spaced apart from the first cushion layer.

[0019] The substrate may further include a first barrier adhesive layer attached to a lower surface of the barrier layer and an upper surface of the support layer, and a second barrier adhesive layer attached to the upper surface of the barrier layer, the first barrier adhesive layer including a first barrier portion and a second barrier portion separated from the first barrier portion by the plurality of openings.

[0020] The first barrier adhesion layer may have a thickness less than a thickness of the second barrier adhesion layer.

[0021] A distance between the first barrier portion and the second barrier portion may be greater than a width of an area in which the plurality of openings are defined.

[0022] The display device may further include a first electronic module overlapping a first hole defined in the display panel and the support layer, and a second electronic module overlapping a second hole defined in the support layer, wherein a depth of the first hole is greater than a depth of the second hole.

[0023] The cushioning layer may be spaced apart from the first hole and the second hole.

[0024] The cushion layer may have a thickness greater than a thickness of the barrier layer.

[0025] According to an embodiment of the present invention, there is provided an electronic device comprising: a display panel having a first region, a second region and a third region defined therein, the second region and the third region being spaced apart from each other with the first region therebetween; a barrier layer disposed under the display panel; a support layer disposed under the barrier layer, the support layer having a plurality of openings defined in a region overlapping the first region; and a barrier adhesive layer including a first barrier portion disposed between the barrier layer and the support layer and a second barrier portion disposed between the barrier layer and the support layer, wherein a first distance between the first barrier portion and the second barrier portion is greater than a second distance between a first sidewall of a first opening among the plurality of openings that is closest to the second region and a second sidewall of a second opening among the plurality of openings that is closest to the third region.

[0026] The display device may further include a cushion layer spaced apart from the display panel with the support layer interposed therebetween, the cushion layer having an elastic modulus lower than that of the support layer.

[0027] The cushion layer may include a first cushion layer and a second cushion layer spaced apart from the first cushion layer, and on a plane, the gap between the first cushion layer and the second cushion layer may overlap the first region.

[0028] A display area and a non-display area surrounding the display area may be defined on the display panel, a hole overlapping the display area may be defined in the support layer, and the cushion layer may be spaced apart from the hole. Effect of the Invention

[0029] As described above, a barrier layer is disposed between the display panel and the support layer. An empty space is defined between the support layer, in which the plurality of openings are defined, and the barrier layer. Therefore, the plurality of openings are not visible from the outside of the electronic device. In addition, since the barrier layer contains a light-shielding material, differences in color of the support layer are not visible from the outside.

[0030] As described above, the cushion layer is separated from the display panel with the support layer sandwiched therebetween. Therefore, when pressure is applied to the display panel, the shape of the display panel is reduced compared to when the cushion layer is disposed between the support layer and the display panel. In addition, the cushion layer is disposed below the heat dissipation layer and is firmly supported by the heat dissipation layer. Therefore, the shock absorbing performance of the cushion layer is improved. [Brief description of the drawings]

[0031] [Figure 1A] 1 is a perspective view of an electronic device according to an embodiment of the present invention. [Figure 1B] 1 is a perspective view of an electronic device according to an embodiment of the present invention. [Diagram 2] 1 is an exploded perspective view of an electronic device according to an embodiment of the present invention; [Diagram 3] 1 is a cross-sectional view of a display module according to an embodiment of the present invention. [Figure 4] FIG. 2 is a plan view of a display panel according to an embodiment of the present invention. [Diagram 5] 1 is a cross-sectional view of a display device according to an embodiment of the present invention. [Figure 6] 1 is a cross-sectional view of a display device according to an embodiment of the present invention. [Figure 7] 1 is an exploded perspective view showing a partial configuration of a display device according to an embodiment of the present invention; [Figure 8]FIG. 8 is an enlarged plan view of a portion of FIG. [Figure 9] FIG. 6 is an enlarged cross-sectional view of a portion of FIG. 5. [Figure 10] 1 is a cross-sectional view of a display device according to an embodiment of the present invention. [Figure 11] 1 is a cross-sectional view of a display device according to an embodiment of the present invention. [Figure 12] FIG. 2 is a rear view of a display device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] As used herein, when a component (or region, layer, portion, etc.) is referred to as being "on" or "coupled" to another component, it means that it may be directly disposed on, connected to, or coupled to the other component, or that a third component may be disposed therebetween.

[0033] In the present specification and drawings, the same reference numerals refer to the same components. In the drawings, the thickness, ratio, and size of the components may be shown diagrammatically, but are merely examples and do not limit the interpretation of the present invention. "And / or" includes all combinations of one or more of the components defined by the associated components.

[0034] The terms "first", "second", etc. are convenient labels used to describe various components, and the components are not limited to the terms, but are used for the purpose of distinguishing one structural element from another. For example, the first component may be named the second component, and similarly the second component may be named the first component, without departing from the scope of the present invention. In addition, a singular expression includes a plural expression unless the context clearly indicates otherwise.

[0035] In addition, terms such as "under", "below", "up" and "above" are used for the purpose of explaining the arrangement relationship of components shown in the drawings. The terms are relative concepts and are explained based on the directions shown in the drawings.

[0036] It should be understood that the terms "comprise" or "have" are intended to express the presence of any feature, number, step, operation, component, part, or combination thereof described hereinabove in the specification, but do not preclude the presence or additional possibility of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0037] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. Furthermore, terms as defined in commonly used dictionaries should be interpreted to include meanings consistent with dictionary descriptions that have a consistent connection with the relevant art, and should not be interpreted in an overly ideal or formal sense unless expressly defined herein.

[0038] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0039] 1A and 1B are perspective views of an electronic device ED according to an embodiment of the present invention, in which Fig. 1A shows the electronic device ED in an unfolded state (or an unfolded state), and Fig. 1B shows the electronic device ED in a folded state.

[0040] 1A and 1B, an electronic device ED according to an embodiment of the present invention includes a display surface DS defined by a first direction DR1 and a second direction DR2 intersecting the first direction DR1. The electronic device ED provides an image IM to a user via the display surface DS.

[0041] The display surface DS includes a display area DA and a non-display area NDA surrounding the display area DA. The display area DA displays an image IM, and the non-display area NDA does not display the image IM. The non-display area NDA surrounds the display area DA. However, the configurations of the display area DA and the non-display area NDA are not limited to the examples shown here, and the shapes of the display area DA and the non-display area NDA may be modified.

[0042] Hereinafter, a direction perpendicular or substantially perpendicular to a plane defined by the first direction DR1 and the second direction DR2 is defined as a third direction DR3. In addition, in this specification, "on a plane" is defined as a state viewed from the third direction DR3. Hereinafter, the first to third directions DR1, DR2, and DR3 are directions indicated by the first to third directional axes, respectively, and the same symbols are referred to.

[0043] The electronic device ED includes a folding area FA and a number of non-folding areas NFA1, NFA2. The non-folding areas NFA1, NFA2 include a first non-folding area NFA1 and a second non-folding area NFA2. In a second direction DR2, the folding area FA is disposed between the first non-folding area NFA1 and the second non-folding area NFA2. The folding area FA is referred to as the first area FA, the first non-folding area NFA1 is referred to as the second area NFA1, and the second non-folding area NFA2 is referred to as the third area NFA2.

[0044] As shown in FIG. 1B, the folding area FA is folded with respect to a folding axis FX parallel to the first direction DR1. The folding area FA has a predetermined curvature and a predetermined radius of curvature. The first non-folding area NFA1 and the second non-folding area NFA2 face each other, and the electronic device ED is folded inward (inner-folding) so that the display surface DS is not exposed to the outside.

[0045] In one embodiment of the present invention, the electronic device ED is outer-folded so that the display surface DS is exposed to the outside. In one embodiment of the present invention, the electronic device ED is configured to alternate between an unfolding operation and an inward or outward folding operation, but the electronic device ED is not limited to the example shown here. In one embodiment of the present invention, the electronic device ED is configured to select any one of the unfolding operation, the inward folding operation, and the outward folding operation.

[0046] A plurality of sensing areas SA1, SA2, and SA3 are defined in the electronic device ED. Although three sensing areas SA1, SA2, and SA3 are illustrated in FIG. 1A, the number of sensing areas SA1, SA2, and SA3 is not limited to the number illustrated here.

[0047] The sensing areas SA1, SA2, and SA3 include a first sensing area SA1, a second sensing area SA2, and a third sensing area SA3. For example, the first sensing area SA1 may overlap with a camera module, the second sensing area SA2 may overlap with a first illuminance sensor, and the third sensing area SA3 may overlap with a second illuminance sensor, and are not limited to the configuration shown here.

[0048] An electronic module (e.g., a camera module, a first illuminance sensor, or a second illuminance sensor) receives an external input transmitted through each of the first to third sensing areas SA1, SA2, and SA3, or provides an output through each of the first to third sensing areas SA1, SA2, and SA3.

[0049] The first sensing area SA1 is surrounded by the display area DA, and the second sensing area SA2 and the third sensing area SA3 are each included in the display area DA. That is, the second sensing area SA2 and the third sensing area SA3 may display an image. The transmittance of each of the first to third sensing areas SA1, SA2, and SA3 is higher than the transmittance of the display area DA. Also, the transmittance of the first sensing area SA1 is higher than the transmittance of the second sensing area SA2 and the transmittance of the third sensing area SA3.

[0050] According to the embodiment of the present invention, the camera module is surrounded by the display area DA, and the first and second illuminance sensors overlap the display area DA. Therefore, the area in which the camera module, the first illuminance sensor, and the second illuminance sensor are arranged does not need to be provided in the non-display area NDA. As a result, the ratio of the area of ​​the display area DA to the front surface of the electronic device ED is increased.

[0051] FIG. 2 is an exploded perspective view of an electronic device according to an embodiment of the present invention.

[0052] 2, the electronic device ED includes a display device DD, an electronic module EM, a power supply module PSM, and cases EDC1 and EDC2. Although not shown, the electronic device ED may further include a mechanism or device for controlling the folding operation of the display device DD.

[0053] The display device DD generates images and senses external inputs. The display device DD includes a window module WM and a display module DM. The window module WM provides a front surface for the electronic device ED.

[0054] The display module DM includes at least a display panel DP. In Fig. 2, the display module DM is shown similarly to the display panel DP, but the display module DM is a laminated structure in which a plurality of components are laminated. A detailed description of the laminated structure of the display module DM will be given later.

[0055] The display panel DP includes a display area DP-DA and a non-display area DP-NDA corresponding to the display area DA (see FIG. 1A) and the non-display area NDA (see FIG. 1A) of the electronic device ED. In this specification, "areas / portions correspond to each other" means that they overlap. In addition, the overlapping areas are not limited to the same area. The display module DM includes a driving chip DIC disposed on the non-display area DP-NDA. The display module DM further includes a flexible circuit film FCB connected to the non-display area DP-NDA.

[0056] The driver chip DIC includes a driver, such as a data driver circuit, for driving the pixels of the display panel DP. Although Fig. 2 shows a structure in which the driver chip DIC is mounted on the display panel DP, the present invention is not limited to the structure shown in Fig. 2. For example, the driver chip DIC may be mounted on the flexible circuit film FCB.

[0057] The electronic module EM includes at least a main controller. The electronic module EM includes a wireless communication module, a camera module, a proximity sensor module, a video input module, an audio input module, an audio output module, a memory, and an external interface module. The electronic module EM is electrically connected to the power supply module PSM.

[0058] The main controller controls the overall operation of the electronic device ED. For example, the main controller may activate or deactivate the display device DD in accordance with a user input. The main controller controls the operation of the display device DD and other modules. The main controller includes at least one microprocessor.

[0059] The cases EDC1 and EDC2 accommodate the display module DM, the electronic module EM, and the power module PSM. Although the two cases EDC1 and EDC2 separated from each other are shown as an example, the configuration of the cases is not limited to the example shown here. Although not shown, the electronic device ED further includes a hinge structure for connecting the two cases EDC1 and EDC2. The cases EDC1 and EDC2 are combined with the window module WM. The cases EDC1 and EDC2 protect the components accommodated in the cases EDC1 and EDC2, such as the display module DM, the electronic module EM, and the power module PSM.

[0060] FIG. 3 is a cross-sectional view of a display module according to an embodiment of the present invention.

[0061] 3, the display module DM includes a display panel DP, an input sensor IS disposed on the display panel DP, an optical film LF disposed on the input sensor IS, and a lower member LM disposed below the display panel DP, with an adhesive layer disposed between the members as necessary.

[0062] The display panel DP includes a base layer, a circuit element layer disposed on the base layer, a display element layer disposed on the circuit element layer, and a thin-film encapsulation layer disposed on the display element layer. The base layer includes a plastic film. For example, the base layer may include polyimide. The shape of the base layer on a plane is substantially the same as the shape of the display panel DP on a plane shown in FIG. 4 described later.

[0063] The circuit element layer includes an organic layer, an inorganic layer, a semiconductor pattern, a conductive pattern, a signal line, etc. The organic layer, the inorganic layer, the semiconductor layer, and the conductive layer are formed on the base layer by methods such as coating and deposition, etc. Then, the organic layer, the inorganic layer, the semiconductor layer, and the conductive layer are selectively patterned through multiple lithography processes to form the semiconductor pattern, the conductive pattern, and the signal line.

[0064] The semiconductor patterns, the conductive patterns, and the signal lines form pixel driving circuits and signal lines SL1-SLm, DL1-DLn, EL1-ELm, CSL1, CSL2, and PL of the pixels PX shown in Figure 4, which will be described later. The pixel driving circuits include at least one transistor.

[0065] The display element layer includes a light-emitting element of a pixel PX shown in FIG. 4 described later. The light-emitting element is electrically connected to the at least one transistor. The thin-film encapsulation layer is disposed on the circuit element layer to seal the display element layer. The thin-film encapsulation layer includes an inorganic layer, an organic layer, and an inorganic layer that are stacked in sequence. The stacked structure of the thin-film encapsulation layer is not particularly limited.

[0066] The input sensor IS includes a plurality of sensing electrodes (not shown) for sensing an external input, trace lines (not shown) connected to the plurality of sensing electrodes, and an inorganic layer and / or an organic layer for insulating / protecting the plurality of sensing electrodes or trace lines. The input sensor IS may be a capacitive sensor, and the configuration of the input sensor IS is not limited to a specific configuration.

[0067] The input sensor IS is formed directly on the thin film sealing layer as a continuous process during the manufacture of the display panel DP. In this specification, the display panel DP with integrated input sensor IS is defined as an electronic panel. However, the configuration of the input sensor IS is not limited to the example shown here, and the input sensor IS may be manufactured as a panel separate from the display panel DP and attached to the display panel DP by an adhesive layer.

[0068] The plurality of sensing electrodes overlap the display area DP-DA (see FIG. 4). The trace lines are arranged to overlap the non-display area DP-NDA (see FIG. 4). The trace lines are extended toward the lower end of the second panel area AA2 through the bending area BA (see FIG. 4) so ​​as to be adjacent to the pads PD shown in FIG. 4. In this case, the trace lines are arranged on a layer different from the signal lines SL1-SLm, DL1-DLn, EL1-ELm, CSL1, CSL2, and PL (see FIG. 4) of the circuit element layer.

[0069] The trace lines are connected to signal lines (input signal lines) provided for the input sensors IS of the display panel DP in the first panel area AA1 shown in Fig. 4. The input signal lines are different signal lines from the signal lines SL1-SLm, DL1-DLn, EL1-ELm, CSL1, CSL2, and PL shown in Fig. 4, but are arranged on the same layer as any one of them. Each of the input signal lines is connected to a corresponding pad PD (see Fig. 4). As a result, the trace lines are electrically connected to the same flexible circuit film FCB (see Fig. 4) as the signal lines of the circuit element layer.

[0070] The optical film LF reduces the reflectance of external light. The optical film LF includes a retarder and / or a polarizer. The optical film LF includes at least a polarizing film.

[0071] According to an embodiment of the present invention, the optical film LF includes color filters having a predetermined arrangement, the arrangement of the color filters being determined in consideration of the emission colors of the pixels PX included in the display panel DP, and the optical film LF further includes a black matrix adjacent to the color filters.

[0072] The optical film LF according to an embodiment of the present invention includes a destructive interference structure. For example, the destructive interference structure may include a first reflective layer and a second reflective layer disposed on different layers. The first reflected light and the second reflected light reflected from the first reflective layer and the second reflective layer, respectively, are destructively interfered with each other, thereby reducing the reflectance of the external light.

[0073] The lower member LM includes various functional members, such as a light-shielding layer that blocks light incident on the display panel DP, an impact-absorbing layer that absorbs external impacts, a support layer that supports the display panel DP, a heat-dissipating layer that dissipates heat generated from the display panel DP, etc. A detailed description of the laminated structure of the lower member LM will be given later.

[0074] FIG. 4 is a plan view of a display panel according to an embodiment of the present invention.

[0075] Referring to FIG. 4, the display panel DP includes a display area DP-DA and a non-display area DP-NDA surrounding the display area DP-DA. The display area DP-DA and the non-display area DP-NDA are distinguished according to whether or not pixels PX are arranged. The pixels PX are arranged in the display area DP-DA. The scan driver SDV, the data driver, and the emission driver EDV are arranged in the non-display area DP-NDA. The data driver is a part of the circuit configured in the driver chip DIC.

[0076] The display panel DP includes a first panel area AA1, a second panel area AA2, and a bending area BA, which are divided in a second direction DP2. The second panel area AA2 and the bending area BA are parts of the non-display area DP-NDA. The bending area BA is disposed between the first panel area AA1 and the second panel area AA2.

[0077] The first panel area AA1 is an area corresponding to the display surface DS in FIG. 1A. The first panel area AA1 includes a first non-folding area NFA10, a second non-folding area NFA20, and a folding area FA0. The first non-folding area NFA10, the second non-folding area NFA20, and the folding area FA in FIG. 1A and FIG. 1B correspond to the first non-folding area NFA1, the second non-folding area NFA2, and the folding area FA, respectively. The folding area FA0 is referred to as the first area FA0, the first non-folding area NFA10 is referred to as the second area NFA10, and the second non-folding area NFA20 is referred to as the third area NFA20.

[0078] In the first direction DR1, the length of the bending area BA and the second panel area AA2 is smaller than the length (or width) of the first panel area AA1. Areas with a shorter length in the bending axis direction are more easily bent.

[0079] The display panel DP includes a plurality of pixels PX, a plurality of scan lines SL1-SLm, a plurality of data lines DL1-DLn, a plurality of emission lines EL1-ELm, first and second control lines CSL1, CSL2, a power line PL, and a plurality of pads PD, where m and n are natural numbers. The pixels PX are connected to the scan lines SL1-SLm, the data lines DL1-DLn, and the emission lines EL1-ELm.

[0080] The scan lines SL1-SLm are extended in a first direction DR1 and electrically connected to the scan driver SDV. The data lines DL1-DLn are extended in a second direction DR2 and electrically connected to the driver chip DIC via the bending area BA. The light emitting lines EL1-ELm are extended in the first direction DR1 and electrically connected to the light emitting driver EDV.

[0081] The power line PL includes a portion extending in the second direction DR2 and a portion extending in the first direction DR1. The portion extending in the first direction DR1 and the portion extending in the second direction are disposed on different layers. The portion of the power line PL extending in the second direction DR2 extends to the second panel area AA2 via the bending area BA. The power line PL provides a first power source to the pixel PX.

[0082] The first control line CSL1 is connected to the scan driver SDV and extends through the bending area BA toward the bottom of the second panel area AA2, and the second control line CSL2 is connected to the emission driver EDV and extends through the bending area BA toward the bottom of the second panel area AA2.

[0083] When viewed from above, the pad PD is disposed adjacent to the lower end of the second panel area AA2. The driving chip DIC, the power line PL, the first control line CSL1, and the second control line CSL2 are electrically connected to the pad PD. The flexible circuit film FCB is electrically connected to the pad PD via the anisotropic conductive adhesive layer.

[0084] 5 and 6 are cross-sectional views of a display device according to an embodiment of the present invention.

[0085] FIG. 5 shows the display device DD before it is mounted on the electronic device ED (see FIG. 1A), and FIG. 6 shows the display device DD after it is mounted on the electronic device ED (see FIG. 1A).

[0086] 6, when the display device DD is installed in the electronic device ED (see FIG. 1A), the first panel area AA1 and the second panel area AA2 of the display panel DP are disposed on different planes, with the second panel area AA2 being disposed below the first panel area AA1.

[0087] 5 and 6, the window module WM includes a thin film glass substrate UTG, a plastic film PF disposed on the thin film glass substrate UTG, a first adhesive layer AL1 bonding the thin film glass substrate UTG and the plastic film PF, and a bezel pattern BP.

[0088] The bezel pattern BP overlaps the non-display area NDA shown in FIG. 1A. The bezel pattern BP is disposed on one surface of the thin glass substrate UTG or one surface of the plastic film PF. FIG. 5 exemplarily shows the bezel pattern BP disposed on the lower surface of the plastic film PF. The configuration of the bezel pattern BP is not limited to that shown in FIG. 5, and the bezel pattern BP may be disposed on the upper surface of the plastic film PF. The bezel pattern BP is a colored light-shielding film, and may be formed, for example, by a coating method. The bezel pattern BP includes a base material and a dye or pigment mixed with the base material. The bezel pattern BP has a closed line shape on a plane.

[0089] The thin film glass substrate UTG may have a thickness of 15 μm (micrometers) to 45 μm, for example, 30 μm. The thin film glass substrate UTG is a chemically strengthened glass. By using the thin film glass substrate UTG, the occurrence of wrinkles is minimized even if the thin film glass substrate UTG is repeatedly folded and unfolded. In one embodiment of the present invention, a synthetic resin film may be used instead of the thin film glass substrate UTG.

[0090] The thickness of the plastic film PF is 50 μm to 80 μm, for example, 65 μm. The plastic film PF includes polyimide, polycarbonate, polyamide, triacetyl cellulose, polymethyl methacrylate, or polyethylene terephthalate. Although not shown separately, at least one of a hard coating layer, an anti-fingerprint layer, and an anti-reflection layer is disposed on the upper surface of the plastic film PF.

[0091] The first adhesive layer AL1 is a pressure sensitive adhesive film (PSA) or an optically clear adhesive (OCA). The adhesive layer described below is also the same as the first adhesive layer and contains a normal adhesive.

[0092] The thickness of the first adhesive layer AL1 is 20 μm to 50 μm, for example, 35 μm. The first adhesive layer AL1 has a thickness sufficient to cover the bezel pattern BP. For example, the thickness of the bezel pattern BP may be 3 μm to 8 μm, and the first adhesive layer AL1 has a thickness sufficient to prevent air bubbles from forming around the bezel pattern BP.

[0093] The first adhesive layer AL1 is separated from the thin glass substrate UTG. Since the strength of the plastic film PF is lower than that of the thin glass substrate UTG, scratches may occur relatively easily. After the first adhesive layer AL1 and the plastic film PF are separated, a new plastic film PF is attached to the thin glass substrate UTG.

[0094] On a plane, the edge UE of the thin film glass substrate UTG does not overlap the bezel pattern BP. By satisfying the above-mentioned conditions, the edge UE of the thin film glass substrate UTG is exposed from the bezel pattern BP, and fine cracks occurring at the edge UE of the thin film glass substrate UTG can be inspected using an inspection device. The inspection device includes a microscope. The edge UE of the thin film glass substrate UTG is photographed from above the upper surface of the plastic film PF using the inspection device, and cracks starting from the edge UE of the thin film glass substrate UTG can be confirmed.

[0095] On a plane, the edge PE of the plastic film PF and the edge A-E1 of the first adhesive layer AL1 are aligned. The plastic film PF and the first adhesive layer AL1 have the same area and shape.

[0096] The window module WM and the display module DM are bonded together by a second adhesive layer AL2. The second adhesive layer AL2 comprises a transparent adhesive, such as a pressure-sensitive adhesive or an optically transparent adhesive. The thickness of the second adhesive layer AL2 is between 35 μm and 65 μm, for example, 50 μm.

[0097] On a plane, the edge A-E2 of the second adhesive layer AL2 overlaps with the window module WM. For example, the edge A-E2 of the second adhesive layer AL2 may overlap with the thin film glass substrate UTG. In the process of attaching the window module WM and the display module DM, pressure is applied to the second adhesive layer AL2. The second adhesive layer AL2 is subjected to the pressure and expands in a direction parallel to the first direction DR1 and the second direction DR. At this time, the area of ​​the second adhesive layer AL2 may be smaller than the area of ​​the thin film glass substrate UTG so that the second adhesive layer AL2 does not protrude beyond the thin film glass substrate UTG.

[0098] If the first adhesive layer AL1 and the second bonding layer AL2 are attached, the thin film glass substrate UTG cannot slip when the electronic device ED (see FIG. 1A) is folded, which may cause a buckling phenomenon or cracks in the thin film glass substrate UTG. However, according to an embodiment of the present invention, the area of ​​the second bonding layer AL2 is smaller than the area of ​​the thin film glass substrate UTG, so the first adhesive layer AL1 and the second bonding layer AL2 cannot be attached, and it is possible to prevent foreign matter from adhering to the second adhesive layer AL2.

[0099] The display module DM includes an optical film LF, a display panel DP, a panel protective layer PPL, a barrier layer BRL, a support layer PLT, a cover layer SCV, a heat dissipation layer RHL, a cushion layer CUL, an insulating layer INL, a spacer SPC, a step compensation pattern CP, and third to eleventh adhesive layers AL3 to AL11. The third to eleventh adhesive layers AL3 to AL11 include a transparent adhesive such as a pressure sensitive adhesive or an optically transparent adhesive. In an embodiment of the present invention, some of the above-mentioned components may be omitted. For example, the step compensation pattern CP and the associated tenth and eleventh adhesive layers AL10 and AL11 may be omitted.

[0100] The optical film LF is disposed in the first panel area AA1. The optical film LF covers at least the display area DP-DA (see FIG. 2). The second adhesive layer AL2 bonds the optical film LF and the window module WM, and the third adhesive layer AL3 bonds the optical film LF and the display panel DP. Although only the display panel DP is shown in FIG. 5 and FIG. 6, an input sensor IS may be further disposed between the display panel DP and the third adhesive layer AL3 as shown in FIG. 3.

[0101] The panel protection layer PPL is disposed under the display panel DP. The panel protection layer PPL protects the lower part of the display panel DP. The panel protection layer PPL includes a flexible plastic material. The panel protection layer PPL prevents scratches from occurring on the rear surface of the display panel DP during the manufacturing process of the display panel DP. The panel protection layer PPL is a colored polyimide film. For example, the panel protection layer PPL may be an opaque yellow film, but the panel protection layer PPL is not limited to the example shown here.

[0102] In one embodiment of the present invention, the panel protective layer PPL is not disposed in the bending area BA. The panel protective layer PPL includes a first panel protective layer PPL-1 that protects the first panel area AA1 of the display panel DP, and a second panel protective layer PPL-2 that protects the second panel area AA2. When the bending area BA is bent, the second panel protective layer PPL-2 is disposed under the first panel area AA1 and the first panel protective layer PPL-1 together with the second panel area AA2 of the display panel DP. Since the panel protective layer PPL is not disposed in the bending area BA, the bending area BA can be bent more easily.

[0103] The fourth adhesive layer AL4 bonds the panel protection layer PPL and the display panel DP. The fourth adhesive layer AL4 includes a first portion AL4-1 corresponding to the first panel protection layer PPL-1 and a second portion AL4-2 corresponding to the second panel protection layer PPL-2. The first portion AL4-1 bonds the first panel protection layer PPL-1 to the first panel area AA1 of the display panel DP, and the second portion AL4-2 bonds the second panel protection layer PPL-2 to the second panel area AA2 of the display panel DP.

[0104] The barrier layer BRL is disposed below the panel protection layer PPL. The fifth adhesive layer AL5 is disposed between the panel protection layer PPL and the barrier layer BRL, and bonds the barrier layer BRL to the panel protection layer PPL. The fifth adhesive layer AL5 is attached to the top surface of the barrier layer BRL, and the fifth adhesive layer AL5 is referred to as the top adhesive layer.

[0105] The barrier layer BRL increases resistance to a compressive force due to an external pressure, and therefore prevents deformation of the display panel DP. The barrier layer BRL includes a flexible plastic material such as polyimide or polyethylene terephthalate.

[0106] In addition, the barrier layer BRL absorbs light incident from the outside. The barrier layer BRL includes a light-shielding material or is a colored film with low light transmittance. For example, the barrier layer BRL may be a black plastic film, such as a black polyimide film. When the display module DM is viewed from above the window module WM, the components disposed under the barrier layer BRL are not visible to the user.

[0107] The support layer PLT is disposed under the barrier layer BRL. The support layer PLT includes a material having an elastic modulus of 60 GPa or more. The support layer PLT includes a metal material such as stainless steel. For example, the support layer PLT may include SUS304, but the support layer PLT is not limited to the example shown here, and the support layer PLT may include various metal materials. The support layer PLT supports the display panel DP. In addition, the support layer PLT improves the heat dissipation performance of the display device DD.

[0108] A plurality of openings OP are defined in a portion of the support layer PLT corresponding to the folding region FA0. The openings OP improve the flexibility of the support layer PLT.

[0109] The area of ​​the barrier layer BRL is smaller than the area of ​​the support layer PLT. The area is the area on a plane. On the plane, the barrier layer BRL overlaps a part of the support layer PLT. Another part of the support layer PLT does not overlap with the barrier layer BRL.

[0110] The sixth adhesive layer AL6 is disposed between the barrier layer BRL and the support layer PLT. The sixth adhesive layer AL6 bonds the barrier layer BRL and the support layer PLT to each other. The sixth adhesive layer AL6 (hereinafter, barrier adhesive layer) includes a first portion AL6-1 (hereinafter, first barrier portion) and a second portion AL6-2 (hereinafter, second barrier portion) that are spaced apart from each other.

[0111] The first barrier portion AL6-1 and the second barrier portion AL6-2 are separated from each other with a plurality of openings OP therebetween. On a plane, the barrier adhesive layer AL6 does not overlap with the plurality of openings OP. Also, on a plane, the barrier adhesive layer AL6 is separated from the plurality of openings OP.

[0112] The first barrier portion AL6-1 overlaps with the second region NFA10, the second barrier portion AL6-2 overlaps with the third region NFA20, and the first barrier portion AL6-1 and the second barrier portion AL6-2 do not overlap with the first region NFA0. By not disposing the barrier adhesive layer AL6 in the region corresponding to the first region FA0, the flexibility of the support layer PLT can be improved.

[0113] In the region where the barrier layer BRL overlaps with the first region FA0, the barrier layer BRL is separated from the support layer PLT. That is, in the portion where the barrier layer BRL overlaps with the first region FA0, an empty space ES is defined between the support layer PLT and the barrier layer BRL. The empty space ES contains air.

[0114] When the electronic device ED (see FIG. 1A) is folded, an empty space ES is defined between the barrier layer BRL and the support layer PLT, so that the shapes of the multiple openings OP defined in the support layer PLT are not visible from outside the electronic device ED (see FIG. 1A).

[0115] In addition, since the barrier layer BRL contains a light-shielding material or is applied as a colored film with low light transmittance, the difference in color of the support layer PLT is not visible from the outside. For example, in the support layer PLT, the difference in color between a first support region in which a plurality of openings OP are defined and a second support region in which a plurality of openings OP are not defined is not visible from the outside. The first support region is a region overlapping with the first region FA0, and the second support region is a region overlapping with the second region FA10 and the third region NFA20.

[0116] The thickness of the barrier adhesion layer AL6 is less than the thickness of the fifth adhesion layer AL5, for example the thickness of the fifth adhesion layer AL5 may be 25 μm and the thickness of the barrier adhesion layer AL6 may be 16 μm.

[0117] The thinner the barrier adhesive layer AL6, the smaller the step caused by the barrier adhesive layer AL6. The smaller the step, the less deformation of the laminated structure caused by folding or unfolding the electronic device ED (see FIG. 1A), but the more likely it is that the multiple openings OP will be visible or the barrier adhesive layer AL6 will come apart due to repeated folding operations. The thicker the barrier adhesive layer AL6, the less likely it is that the multiple openings OP will be visible and the more reliable the adhesive strength of the barrier adhesive layer AL6 will be due to repeated folding operations, but the more likely it is that the step will become larger. Therefore, the thickness of the barrier adhesive layer AL6 is selected within an appropriate range in consideration of the folding reliability, the adhesive reliability, and the visibility of the multiple openings OP.

[0118] The seventh adhesive layer AL7 (hereinafter, the first cover adhesive layer) is disposed under the support layer PLT, and the cover layer SCV is disposed under the first cover adhesive layer AL7. The support layer PLT and the cover layer SCV are bonded together by the first cover adhesive layer AL7. The cover layer SCV is manufactured in a sheet shape and attached to the support layer PLT.

[0119] The first cover adhesive layer AL7 and the cover layer SCV cover the openings OP defined in the support layer PPL. Thus, the cover layer SCV prevents foreign matter from entering the openings OP. The cover layer SCV has a lower elastic modulus than the support layer PLT. For example, the cover layer SCV may include thermoplastic polyurethane, rubber, silicone, etc., but is not limited to the examples shown here.

[0120] The eighth adhesive layer AL8 (hereinafter, second cover adhesive layer) is disposed under the cover layer SCV. The second cover adhesive layer AL8 includes a first cover portion AL8-1 and a second cover portion AL8-2. The first cover portion AL8-1 and the second cover portion AL8-2 are spaced apart from each other. On a plane, the first cover portion AL8-1 and the second cover portion AL8-2 are spaced apart with a plurality of openings OP therebetween. The first cover portion AL8-1 and the second cover portion AL8-2 do not overlap in the first area FA0.

[0121] The heat dissipation layer RHL is disposed under the second cover adhesive layer AL8. The heat dissipation layer RHL is a sheet having high thermal conductivity. The heat dissipation layer RHL includes a metal or a metal alloy, for example, the heat dissipation layer RHL may include copper, a copper alloy, or graphite.

[0122] The heat dissipation layer RHL includes a first heat dissipation layer RHL-1 and a second heat dissipation layer RHL-2. The first heat dissipation layer RHL-1 and the second heat dissipation layer RHL-2 are spaced apart by a predetermined distance GP. The predetermined distance GP is between 0.4 mm (millimeters) and 2.4 mm, but is not limited to the example shown here. The predetermined distance GP is disposed to correspond to the folding area FA0.

[0123] The first heat dissipation layer RHL-1 is coupled to the cover layer SCV via the first cover portion AL8-1, and the second heat dissipation layer RHL-2 is coupled to the cover layer SCV via the second cover portion AL8-2. On a plane, the first heat dissipation layer RHL-1 overlaps a part of the first region FA0 and the second region NFA10, and the second heat dissipation layer RHL-2 overlaps another part of the first region FA0 and the third region NFA20.

[0124] On a plane, a portion of the first heat dissipation layer RHL-1 overlaps a portion of the plurality of openings OP, and a portion of the second heat dissipation layer RHL-2 overlaps another portion of the plurality of openings OP. The first heat dissipation layer RHL-1 and the second heat dissipation layer RHL-2 serve to support the support layer PLT. For example, an area of ​​the support layer PLT where the plurality of openings OP are defined may be supported by the first heat dissipation layer RHL-1 and the second heat dissipation layer RHL-2. Therefore, the first heat dissipation layer RHL-1 and the second heat dissipation layer RHL-2 may be referred to as a first lower support layer and a second lower support layer.

[0125] The ninth adhesive layer AL9 is disposed under the heat dissipation layer RHL. The ninth adhesive layer AL9 includes a first portion AL9-1 corresponding to the first heat dissipation layer RHL-1 and a second portion AL9-2 corresponding to the second heat dissipation layer RHL-2. The first portion AL9-1 and the second portion AL9-2 are spaced apart by a predetermined distance GP.

[0126] The cushion layer CUL is disposed under the ninth adhesive layer AL9. The thickness of the cushion layer CUL may be 75 μm, but is not limited to the examples shown herein. The cushion layer CUL protects the display panel DP by absorbing external impacts. The elastic modulus of the cushion layer CUL is lower than that of the support layer PLT. The cushion layer CUL includes a foam sheet having a predetermined elasticity. The cushion layer CUL includes sponge or polyurethane.

[0127] The cushion layer CUL includes a first cushion layer CUL-1 corresponding to the first portion AL9-1 and a second cushion layer CUL-2 corresponding to the second portion AL9-2. The first cushion layer CUL-1 and the second cushion layer CUL-2 are spaced apart by a predetermined distance GP. On a plane, the predetermined distance GP between the first cushion layer CUL-1 and the second cushion layer CUL-2 overlaps with the first region FA0. On a plane, the first cushion layer CUL-1 overlaps with a portion of the first region FA0 and the second region NFA10, and the second cushion layer CUL-1 overlaps with another portion of the first region FA0 and the third region NFA20.

[0128] Unlike the embodiment of the present invention, when the cushion layer CUL is disposed between the support layer PLT and the display panel DP, if a pressure is applied to the display panel DP, the shape of the cushion layer CUL may be deformed and the display panel DP may be easily deformed. However, according to the embodiment of the present invention, the cushion layer CUL is separated from the display panel DP with the support layer PLT sandwiched therebetween. Therefore, when a pressure is applied to the display panel DP, the deformation of the display panel DP is reduced compared to the comparative example. In addition, the cushion layer CUL is disposed below the heat dissipation layer RHL that is firmly supported, thereby improving the shock absorbing performance of the cushion layer CUL. The insulating layer INL is disposed under the cushion layer CUL. FIG. 5 shows an embodiment in which an insulating tape is disposed. The insulating layer INL prevents the inflow of static electricity. Although not shown in FIG. 5, the flexible circuit film FCB is disposed on the insulating layer INL. The insulating layer INL prevents electrical interference between the flexible circuit film FCB and the member disposed on the insulating layer INL.

[0129] One side of the step compensation pattern CP is bonded to the support layer PLT via a tenth adhesive layer AL10. An eleventh adhesive layer AL11 is disposed on the other side of the step compensation pattern CP. The eleventh adhesive layer AL11 is used when the display device DD (see FIG. 2) is bonded to other components of the electronic device ED (see FIG. 2).

[0130] Referring to FIG. 6, the bending area BA is bent so that the second panel area AA2 is disposed below the first panel area AA1. Thus, the driving chip DIC (see FIG. 5) is disposed below the first panel area AA1. That is, the first panel area AA1 and the second panel area AA2 are disposed on different planes (or reference planes). The bending area BA is bent so as to bulge laterally on the cross section. The bending area BA has a predetermined curvature and radius of curvature. The radius of curvature is approximately 0.1 mm or more and 0.5 mm or less.

[0131] The bending protection layer BPL is disposed at least in the bending area BA. The bending protection layer BPL overlaps the bending area BA, the first panel area AA1, and the second panel area AA2. The bending protection layer BPL is disposed not only in the bending area BA, but also on a part of the first panel area AA1 and a part of the second panel area AA2.

[0132] The bending protection layer BPL is bent together with the bending area BA. The bending protection layer BPL protects the bending area BA from an external impact and controls the neutral plane of the bending area BA. The bending protection layer BPL controls the stress in the bending area BA so that the neutral plane approaches the signal line arranged in the bending area BA.

[0133] The surface of the second protective layer PPL-2 to which the second portion AL4-2 of the fourth adhesive layer AL4 is not attached is attached to the spacer SPC. Although the spacer SPC is shown as a single layer in Figures 5 and 6, the spacer SPC may have a multi-layer structure in which a base layer is disposed between two adhesive layers. The base layer includes graphite, which has excellent heat dissipation properties.

[0134] Fig. 7 is an exploded perspective view showing a part of a display device according to an embodiment of the present invention. Fig. 8 is a plan view showing an enlarged part of Fig. 7. Fig. 7 shows an example of a barrier adhesive layer AL6 and a support layer PLT. Fig. 8 shows an enlarged view of the AA region shown in Fig. 7.

[0135] 7 and 8, the support layer PLT includes a folding region PLT-F corresponding to the first region FA0 (see FIG. 5), a first region PLT-1 corresponding to the second region NFA10 (see FIG. 5), and a second region PLT-2 corresponding to the third region NFA20 (see FIG. 5). A plurality of openings OP are formed in the folding region PLT-F.

[0136] The multiple openings OP are arranged in a predetermined pattern. The multiple openings OP are arranged in a lattice pattern. Each of the multiple openings OP is defined so as to completely penetrate from the upper surface of the support layer PLT to the lower surface of the support layer PLT. By forming the multiple openings OP in the folding region PLT-F, the area of ​​the folding region PLT-F of the support layer PLT is reduced, thereby reducing the rigidity of the folding region PLT-F. Therefore, the folding region PLT-F has higher flexibility than when the multiple openings OP are not formed.

[0137] The first distance GP1 between the first barrier portion AL6-1 and the second barrier portion AL6-2 is greater than the width PLW of the folding region PLT-F in which the plurality of openings OP are defined. The first distance GP1 and the width PLW are the distance and width in a direction parallel to the second direction DP2. If the first distance GP1 is equal to or smaller than the width PLW, at least one of the first barrier portion AL6-1 and the second barrier portion AL6-2 overlaps with the plurality of openings OP due to a process error occurring during a process of attaching the first barrier portion AL6-1 and the second barrier portion AL6-2 to the support layer PPL. In this case, a problem may occur in which the plurality of openings OP are visible from the outside. According to an embodiment of the present invention, the first distance GP1 is greater than the width PLW by a predetermined value. The predetermined value is determined in consideration of the process error. Therefore, at least one of the first barrier portion AL6-1 and the second barrier portion AL6-2 does not overlap with the plurality of openings OP, and as a result, a phenomenon in which the plurality of openings OP are visible from the outside does not occur.

[0138] The width AL1W in the second direction DR2 of the first barrier portion AL6-1 is smaller than the width PL1W in the second direction DR2 of the first region PLT-1, and the width AL2W in the second direction DR2 of the second barrier portion AL6-2 is smaller than the width PL2W in the second direction DR2 of the second region PLT-2.

[0139] Fig. 9 is an enlarged cross-sectional view of a part of Fig. 5. Fig. 9 shows an enlarged view of the BB region shown in Fig. 5.

[0140] 5 and 9, the first distance GP1 between the first barrier portion AL6-1 and the second barrier portion AL6-2 is greater than the second distance DT0 between the first side wall OP1S of the first opening OP1 that is closest to the second region NFA10 among the multiple openings OP, and the second side wall OP2S of the second opening OP2 that is closest to the third region NFA20 among the multiple openings OP. For example, the first distance GP1 may be greater than the second distance DT0 by 1 mm or more, but the first distance GP1 shown here is merely an example, and the first distance GP1 is not limited to the example shown here.

[0141] The second distance DT0 between the first side wall OP1S and the second side wall OP2S is equal to or smaller than the width PLW of the folding area PLT-F shown in FIG.

[0142] The third distance GP2 between the first cover portion AL8-1 and the second cover portion AL8-2 is greater than the width PLW (see FIG. 7) of the folding region PLT-F (see FIG. 7). The third distance GP2 is also greater than the second distance DT0. For example, the second distance DT0 may be 8.65 mm, and the first distance GP1 and the third distance GP2 may be 9.65 mm, respectively. The difference between the first distance GP1 and the second distance DT0, and the difference between the third distance GP2 and the second distance DT0 are substantially the same. Substantially the same means that they are the same within a fixed error range.

[0143] In the portion overlapping with the first region FA0, an empty space EST is defined between the barrier layer BRL and the first cover adhesive layer AL7. The empty space EST is divided into a first empty space ES and a plurality of second empty spaces ES0. The first empty space ES is defined by the barrier layer BRL, the upper surface of the support layer PLT, the first barrier portion AL6-1, and the second barrier portion AL6-2, and the second empty spaces ES0 are defined by a plurality of openings OP.

[0144] Fig. 10 is a cross-sectional view of a display device according to an embodiment of the present invention. Fig. 10 is a cross-sectional view corresponding to III-III' in Fig. 1A. Fig. 11 is a cross-sectional view of a display device according to an embodiment of the present invention. Fig. 11 is a cross-sectional view corresponding to IV-IV' in Fig. 1A.

[0145] 10, a first hole HL1 is defined that penetrates from the eleventh adhesive layer AL11 to the second bonding layer AL2 of the display device DD (see FIG. 2). A bottom surface UTG-B of the first hole HL1 corresponds to the lower surface of the thin film glass substrate UTG.

[0146] The first electronic module CM overlaps with the first hole HL1 or is inserted into the first hole HL1. The first electronic module CM is a camera module. The first electronic module CM captures an image through the first sensing area SA1. The first hole HL1 is defined not only in the lower member LM but also in the display panel DP. Therefore, the first sensing area SA1 cannot display an image. However, the example shown here is merely an example, and the first hole HL1 in which the first electronic module CM is accommodated does not have to penetrate the display panel DP. In this case, the first sensing area SA1 can display an image.

[0147] On a plane, the light-shielding pattern BP-C overlapping the boundary of the first sensing area SA1 is disposed between the plastic film PF and the first bonding layer AL1. The light-shielding pattern BP-C has a circular ring shape.

[0148] Referring to Fig. 11, a second hole HL2 is defined that penetrates from the eleventh adhesive layer AL11 to the fifth bonding layer AL5 of the display device DD (see Fig. 2). A bottom surface PPL-B of the second hole HL2 corresponds to a bottom surface of the panel protection layer PPL. A second electronic module IM is inserted into the second hole HL2. The second electronic module IM is an illuminance sensor.

[0149] 10 and 11, the depth DT1 of the first hole HL1 is greater than the depth DT2 of the second hole HL2. The components of the display device DD (see FIG. 2) overlapping with the first sensing area SA1 are fewer than the components of the display device DD (see FIG. 2) overlapping with the second sensing area SA2. Therefore, the transmittance of the first sensing area SA1 is greater than the transmittance of the second sensing area SA2.

[0150] FIG. 12 is a rear view of a display device according to an embodiment of the present invention.

[0151] 12 shows the bottom surface of the support layer PLT. A cover layer SCV, a heat dissipation layer RHL, a cushion layer CUL, and an insulating layer INL are sequentially arranged on the bottom surface of the support layer PLT. This laminated structure is arranged in a partial area of ​​the bottom surface of the support layer PLT. The cover layer SCV, the heat dissipation layer RHL, the cushion layer CUL, and the insulating layer INL are separated from the first hole HL1 and the second hole HL2.

[0152] The cover layer SCV overlaps the folding region PLT-F. In the display device according to an embodiment of the present invention, the areas of the cover layer SCV, the heat dissipation layer RHL, the cushion layer CUL, and the insulating layer INL are smaller, but this is not limited to the example shown here. A spacer SPC is disposed apart from the laminated structure. An eleventh adhesive layer AL11 is disposed on the outer side of the laminated structure and along the edge of the support layer PLT.

[0153] Although the embodiments of the present invention have been described with reference to the drawings, it should be understood by those skilled in the art or those having ordinary knowledge in the art that the present invention may be modified and changed in various ways without departing from the spirit and technical scope of the present invention as described in the claims below. Therefore, the technical scope of the present invention should be determined by the claims, not by the contents described in the detailed description of the specification. [Explanation of symbols]

[0154] ED:Electronic device DD: Display device DP: Display panel BRL: Barrier layer PLT: Support layer OP: a plurality of openings OP1: a first opening OP2: 2nd opening OP1S: 1st side wall OP2S: Second side wall CUL: Cushion layer AL6: Barrier adhesion layer AL6-1: First barrier portion AL6-2: Second barrier section CUL-1: First cushion layer CUL-2: Second cushion layer

Claims

1. a display panel including a folding region, the display panel being foldable, and a non-folding region adjacent to the folding region along a first direction; a barrier layer facing the display panel; a support layer facing the display panel with the barrier layer interposed therebetween; a plurality of openings defined in the support layer corresponding to the folding regions of the display panel; a space defined between the barrier layer and the support layer and overlapping the plurality of openings; A display device comprising:

2. The barrier layer comprises a colored polyimide film. The display device according to claim 1 .

3. The barrier layer includes a light-shielding material. The display device according to claim 1 .

4. the support layer extends longer than the barrier layer along the first direction; The display device according to claim 1 .

5. a cushion layer facing the display panel with the support layer interposed therebetween; a barrier adhesion layer provided between the barrier layer and the support layer, the barrier adhesion layer including a first barrier portion and a second barrier portion spaced apart from each other along the first direction with the openings of the support layer therebetween; The display device of claim 1 further comprising:

6. the support layer faces both the folded region and the unfolded region; Along the first direction, each of the cushion layer, the support layer, and the barrier layer has a width, the width of the cushion layer is narrower than the width of the support layer, and the width of the barrier layer is narrower than the width of the support layer. The display device according to claim 5 .

7. The cushion layer includes a first cushion layer and a second cushion layer spaced apart from each other by an interval along the first direction, the distance between the first cushion layer and the second cushion layer corresponds to the folding region of the display panel; The display device according to claim 5 .

8. Each of the support layer and the cushion layer has an elastic modulus, and the elastic modulus of the support layer is greater than the elastic modulus of the cushion layer. The display device according to claim 5 .

9. each of the barrier adhesion layer and the barrier layer has a thickness, the thickness of the barrier adhesion layer being less than the thickness of the barrier layer; The display device according to claim 5 .

10. each of the cushion layer and the barrier layer has a thickness, the thickness of the cushion layer being greater than the thickness of the barrier layer; The display device according to claim 5 .

11. a top adhesive layer between the display panel and the barrier layer; the top adhesive layer attaches the display panel to the barrier layer; each of the top adhesion layer and the barrier adhesion layer has a thickness; the thickness of the top adhesive layer is greater than the thickness of the barrier adhesive layer; The display device according to claim 5 .

12. the first barrier portion and the second barrier portion are spaced apart from each other a first distance along the first direction; Along the first direction, the plurality of openings corresponding to the folding region of the display panel include a first opening closest to the non-folding region and a second opening farthest from the non-folding region; the support layer includes a first sidewall along a first direction closest to the non-folding region and defining the first opening, and a second sidewall along a first direction closest to the non-folding region and defining the second opening, a distance between the first sidewall and the second sidewall is a second distance; the first distance between the first barrier portion and the second barrier portion is greater than the second distance between the first sidewall and the second sidewall of the support layer; The display device according to claim 5 .

13. the first barrier portion and the second barrier portion are spaced apart from each other by a fixed distance along the first direction, the fixed distance between the first barrier portion and the second barrier portion being greater than a width of an area in which the plurality of openings are defined; The display device according to claim 5 .

14. the non-folded area of ​​the display panel includes a display area; an opening penetrating the support layer corresponding to the display area; the cushion layer spaced from the opening through the support layer along the first direction; Further comprising: The display device according to claim 5 .

15. a display panel including a foldable area along which the display panel is folded; a support layer facing the display panel; a plurality of openings defined in the support layer corresponding to the foldable areas of the display panel; a cushion layer including a first cushion layer and a second cushion layer facing the display panel with the support layer interposed therebetween and spaced apart from each other in the foldable region of the display panel; 23. An electronic device comprising:

16. a barrier layer provided between the display panel and the support layer; a barrier adhesive layer disposed between the barrier layer and the support layer, the barrier adhesive layer including a first barrier adhesive layer between the barrier layer and the support layer and a second barrier adhesive layer between the barrier layer and the display panel; Further comprising: the first barrier adhesive layer includes a first barrier portion and a second barrier portion spaced apart from each other across the plurality of openings; 16. The electronic device of claim 15.

17. a space defined between the barrier layer and the support layer and overlapping the plurality of openings; 17. The electronic device of claim 16.

18. The barrier layer comprises a colored polyimide film.

17. The electronic device of claim 16.

19. The barrier layer includes a light-shielding material.

17. The electronic device of claim 16.

20. the barrier layer has a first elastic modulus; the cushioning layer has a second elastic modulus lower than the first elastic modulus of the support layer; 17. The electronic device of claim 16.

Images