Display device

Abstract

The display device includes: a display panel including a first non-folding area, a second non-folding area, and a folding area interposed between the first non-folding area and the second non-folding area; and a digitizer disposed below the display panel and divided into an active area and a passive area surrounding the active area. The digitizer includes: a first sensing coil disposed in the active area; a first compensation layer disposed on the first sensing coil to cover the first sensing coil; a second sensing coil disposed below the first sensing coil in the active area; a bridging line disposed below the second sensing coil; and a second compensation layer disposed below the bridging line to cover the bridging line. A surface of the first compensation layer opposite to a surface of the first compensation layer covering the first sensing coil is flat.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and all benefits arising from Korean Patent Application No. 10-2023-0098627, filed on Jul. 28, 2023, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] Embodiments of the present disclosure described herein relate to a display device. Background Art

[0004] Generally, an electronic device such as a smart phone, a digital camera, a laptop computer, a navigation device, or a smart TV may include a display device that provides an image to a user. The display device generates an image and provides the generated image to the user through a display screen.

[0005] Recently, with the development of display device technology, various types of display devices have been developed. For example, various flexible display devices that change in shape into a curved shape or bend or curl have been developed. Flexible display devices can be easily carried and improve user convenience.

[0006] The foldable display device in the flexible display device can be folded around a folding axis. The foldable display device may include a display module that can be folded around the folding axis and a support unit disposed under the display module to support the display module. When the foldable display device is folded, the support unit may be folded together with the display module.

[0007] The foldable display device may further include a digitizer disposed below the display module. The digitizer may sense electromagnetic changes generated by the approach of a pen placed on the display device, and may detect the position of the pen. Utility Model Content

[0008] Embodiments of the present disclosure provide a display device having improved surface quality and reliability.

[0009] According to an embodiment of the present disclosure, a display device includes: a display panel including a first non-folding area, a second non-folding area, and a folding area interposed between the first non-folding area and the second non-folding area; and a digitizer disposed below the display panel and divided into an active area and a passive area surrounding the active area. In such an embodiment, the digitizer includes: a first sensing coil disposed in the active area; a first compensation layer disposed on the first sensing coil to cover the first sensing coil; a second sensing coil disposed in the active area below the first sensing coil; a bridge wire disposed below the second sensing coil; and a second compensation layer disposed below the bridge wire to cover the bridge wire. In such an embodiment, a surface of the first compensation layer opposite to a surface of the first compensation layer covering the first sensing coil is flat.

[0010] According to an embodiment of the present disclosure, a display device includes a display panel and a digitizer disposed below the display panel. In such an embodiment, the digitizer includes: a first sensing coil; a first compensation layer including a first first surface covering the first sensing coil and a second first surface opposite to the first first surface; a second sensing coil disposed below the first sensing coil; a bridge wire disposed below the second sensing coil; and a second compensation layer including a first second surface covering the bridge wire and a second second surface opposite to the first second surface, wherein the shape of the second first surface is symmetrical to the shape of the second second surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and other features of the embodiments of the present disclosure will become apparent by describing in detail the embodiments of the present disclosure with reference to the attached drawings.

[0012] Figure 1 is a perspective view of a display device according to an embodiment of the present disclosure.

[0013] Figure 2 It is shown Figure 1 A view showing a folded state of the display device is shown in FIG.

[0014] Figure 3 yes Figure 1 An exploded perspective view of a display device.

[0015] Figure 4 It is schematically shown Figure 3 A cross-sectional view of a display module is shown in FIG.

[0016] Figure 5 yes Figure 3 A plan view of the display module is shown in FIG.

[0017] Figure 6 is shown with Figure 5A cross-sectional view of a cross section of an electronic panel corresponding to any pixel shown in FIG.

[0018] Figure 7 It is along Figure 5 A cross-sectional view taken along line II' shown in FIG.

[0019] Figure 8 is shown in a bent state Figure 7 View of the bending area shown in .

[0020] Fig. 9 yes Figure 7 A perspective view of the digitizer shown in FIG.

[0021] Fig.10 yes Fig. 9 An enlarged plan view of the first area shown in FIG.

[0022] Fig.11 The folded state is shown Figure 7 A view of a display device shown in FIG.

[0023] Fig.12 It is shown Figure 7 View of the first sensing coil of the digitizer shown in FIG.

[0024] Fig.13 It is shown Figure 7 . A view of the second sensing coil of the digitizer shown in FIG.

[0025] Fig.14 yes Fig.12 An enlarged view of a portion of the folded portion shown in FIG.

[0026] Fig.15 yes Fig.14 An enlarged view of some of the first extension lines shown in .

[0027] Fig.16 It shows that Fig.14 Add the first pattern part shown in Fig.13 A view of the second pattern portion shown in FIG.

[0028] Fig.17 yes Fig. 9 A cross-sectional view of the digitizer shown in FIG.

[0029] Fig.18 is a cross-sectional view of a digitizer according to a comparative embodiment.

[0030] Fig.19 is a view showing a digitizer according to another embodiment of the present disclosure.

[0031] Fig. 20is a view showing a digitizer according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] The present invention will be described more fully below with reference to the accompanying drawings, in which various embodiments are shown. However, the present invention can be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. The same reference numerals always represent the same elements.

[0033] When an element or layer is disposed "on" another element or layer, the element or layer may be directly disposed on the other element or layer, and another layer or element may be interposed between the element or layer and the other element or layer. Meanwhile, when a device or layer is disposed "directly" on another device or layer, another device or layer is not interposed between the device or layer and the other device or layer.

[0034] The terms used herein are only used to describe the purpose of a specific embodiment, and are not intended to be limited. As used herein, "one", "a kind of", "said" and "at least one" do not represent the limitation of quantity, and are intended to include both the singular and the plural, unless the context clearly indicates otherwise. Therefore, the reference to "one" element in the claim and the reference to "said" element thereafter include one element and multiple elements. For example, "an element" has the same meaning as "at least one element", unless the context clearly indicates otherwise. "At least one" should not be interpreted as limiting "one" or "a kind of". "Or" means "and / or". As used herein, the term "and / or" includes any and all combinations of one or more of the related listed items. It will also be understood that when used in this specification, the term "includes" and / or "includes", or "includes" and / or "includes" specifies the existence of stated features, regions, entireties, steps, operations, elements and / or components, but does not exclude the existence or addition of one or more other features, regions, entireties, steps, operations, elements, components and / or their groups.

[0035] For ease of description, spatially relative terms such as "below," "beneath," "lower," "above," "upper," etc. may be used herein to describe the relationship of one element or feature to another element or feature as shown in the drawings. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0036] It will be understood that although the terms "first", "second", etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present disclosure, the first element, first component or first part discussed below may be referred to as the second element, second component or second part.

[0037] As used herein, "about" or "approximately" includes the stated value and means within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, in view of the measurements in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0038] 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 in the art to which the present disclosure belongs. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present disclosure, and should not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0039] Embodiments are described herein with reference to cross-sectional views as schematic diagrams of idealized embodiments. Therefore, variations in the shapes in the figures due to, for example, manufacturing techniques and / or tolerances should be expected. Therefore, the embodiments described herein should not be interpreted as being limited to the specific shapes of the regions shown herein, but should include deviations in shapes, for example, caused by manufacturing. For example, a region shown or described as flat may typically have rough and / or nonlinear features. In addition, the sharp corners shown may be rounded. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the precise shape of the regions, and are not intended to limit the scope of the claims.

[0040] In this specification, embodiments will be described with reference to plan views and cross-sectional views that are idealized schematic diagrams of the present disclosure. Therefore, the shapes of the figures in the drawings may be deformed due to manufacturing techniques and / or tolerances. Therefore, embodiments of the present disclosure are not limited to specific shapes and include variations of shapes formed according to manufacturing processes. Therefore, the regions shown in the drawings have schematic properties. Therefore, the shapes of the regions shown in the drawings only illustrate specific shapes of regions of the device and do not limit the scope of the present disclosure.

[0041] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0042] Figure 1 is a perspective view of a display device according to an embodiment of the present disclosure. Figure 2 It is shown Figure 1 A view showing a folded state of the display device is shown in FIG.

[0043] refer to Figure 1 According to an embodiment of the present disclosure, the display device DD may have a rectangular shape having long sides extending in a first direction DR1 and short sides extending in a second direction DR2 crossing the first direction DR1. However, the embodiment is not limited thereto, and the display device DD may have various shapes such as a circle or a polygon. The display device DD may be a flexible display device.

[0044] Hereinafter, a direction substantially perpendicular to a plane defined by the first direction DR1 and the second direction DR2 is defined as a third direction DR3. The third direction DR3 may be a thickness direction of the display device DD. In the present disclosure, the expression "when viewed in a plan view" may refer to a state when viewed in the third direction DR3.

[0045] The display device DD may include a folding area FA and a plurality of non-folding areas NFA1 and NFA2. The non-folding areas NFA1 and NFA2 may include a first non-folding area NFA1 and a second non-folding area NFA2. The folding area FA may be interposed between the first non-folding area NFA1 and the second non-folding area NFA2. The folding area FA, the first non-folding area NFA1, and the second non-folding area NFA2 may be arranged in a second direction DR2.

[0046] In an embodiment, for example, Figure 1 and Figure 2 As shown in FIG. 1 , one folding area FA and two non-folding areas NFA1 and NFA2 are provided, but the number of the folding area FA and the non-folding areas NFA1 and NFA2 is not limited thereto. In an embodiment, for example, the display device DD may include more than two non-folding areas and a plurality of folding areas interposed between the non-folding areas.

[0047] A top surface of the display device DD may be defined as a display surface DS, and may have a plane defined by the first direction DR1 and the second direction DR2. An image IM generated by the display device DD may be provided to a user through the display surface DS.

[0048] The display surface DS may include a display area DA and a non-display area NDA around the display area DA. The display area DA is used to display an image, and the non-display area NDA is not used to display an image. The non-display area NDA may be defined as an edge area or a frame of the display device DD to surround the display area DA and be printed with a specific color.

[0049] The display device DD may include at least one sensor SN and at least one camera CA. The sensor SN and the camera CA may be adjacent to an edge of the display device DD. The sensor SN and the camera CA may be disposed adjacent to the non-display area NDA in the display area DA. In an embodiment, as Figure 1 As shown in FIG. 1 , the sensor SN and the camera CA may be disposed in the second non-folding area NFA2 , but the present disclosure is not limited thereto. The sensor SN and the camera CA may be disposed in the first non-folding area NFA1 .

[0050] As light is transmitted through a portion of the display device DD in which the sensor SN and the camera CA are disposed, light may be provided to the camera CA and the sensor SN. In an embodiment, for example, the sensor SN may be a proximity sensor, but the type of the sensor SN is not limited thereto. The camera CA may capture an external image. In an embodiment, the sensor SN and the camera CA may be disposed in plural, that is, a plurality of sensors SN and a plurality of cameras CA may be disposed.

[0051] refer to Figure 2 , an embodiment of the display device DD may be a foldable display device DD that is folded or unfolded. For example, the display device DD may be folded as the folding area FA is bent about a folding axis FX that is parallel to the first direction DR1. The folding axis FX may be defined as a long (longitudinal or main) axis that is parallel to the long side of the display device DD.

[0052] When the display device DD is folded, the first non-folding area NFA1 and the second non-folding area NFA2 may face each other, and the display device DD may be in an inner folding state so that the display surface DS is not exposed to the outside. However, the embodiments of the present disclosure are not limited thereto. For example, the display device DD may be in an outer folding state so that the display surface DS is exposed to the outside around the folding axis FX.

[0053] In an embodiment, the distance between the first non-folding area NFA1 and the second non-folding area NFA2 may be less than twice the radius of curvature R (eg, diameter) of the folded or bent portion. In such an embodiment, the folding area FA may be folded in the form of a dumbbell.

[0054] Figure 3 yes Figure 1 An exploded perspective view of a display device.

[0055] refer to Figure 3 , an embodiment of the display device DD may include a window module WM, a display module DM, a camera CA, a sensor SN, an electronic module EM, a power supply module PSM, and a housing EDC. Although not shown separately, the display device DD may also include a mechanical structure (e.g., a hinge) to control the folding operation of the display module DM.

[0056] The display module DM may generate an image and sense an input applied from the outside. The window module WM may define a front surface of the display module DM. The window module WM may be disposed on the display module DM to protect the display module DM. The window module WM may transmit light generated from the display module DM and provide the light to a user.

[0057] The display module DM may include at least a display panel DP. Figure 3 For the sake of convenience, only the display panel DP of the stacked structure of the display module DM is shown, but it should be understood that the display module DM may actually include a plurality of components interposed between the upper and lower parts of the display panel DP. The detailed stacked structure of the display module DM will be described in detail later. The display panel DP may include a display area DA (see FIG. 1 ) and a display device DD. Figure 1 ) and non-display area NDA (see Figure 1 ) corresponds to the display area DA and non-display area NDA.

[0058] The first hole area HA1 and the second hole area HA2 may be defined in the display panel DP. The first hole area HA1 and the second hole area HA2 may have a light transmittance higher than the light transmittance of the periphery (i.e., the light transmittance of the area adjacent to the first hole area HA1 and the second hole area HA2). The camera CA may be disposed under the first hole area HA1, and the sensor SN may be disposed under the second hole area HA2. Light transmitted through the first hole area HA1 and the second hole area HA2 may be provided to the camera CA and the sensor SN.

[0059] The display module DM may include a data driving unit DDV disposed in a non-display area NDA of the display panel DP. The data driving unit DDV may be manufactured in the form of an integrated circuit chip and installed in the non-display area NDA. However, the present disclosure is not limited thereto. In an embodiment, for example, the data driving unit DDV may be installed on a flexible circuit board connected or linked to the display panel DP.

[0060] The electronic module EM and the power supply module PSM may be disposed below the display module DM. Although not shown, the electronic module EM and the power supply module PSM may be connected or linked to each other through an additional flexible circuit board. The electronic module EM may control the operation of the display module DM. The power supply module PSM may provide power to the display module DM.

[0061] The housing EDC may contain the window module WM, the display module DM, the electronic module EM and the power supply module PSM. The housing EDC may include two first housings EDC1 and a second housing EDC2 to fold the display module DM. The first housing EDC1 and the second housing EDC2 may be arranged in the second direction DR2 while extending in the first direction DR1.

[0062] Although not shown, the display device DD may further include a hinge structure to link the first housing EDC1 and the second housing EDC2 to each other. The housing EDC may be coupled to the window module WM. The housing EDC may protect the window module WM, the display module DM, the electronic module EM, and the power supply module PSM.

[0063] Figure 4 It is schematically shown Figure 3 A cross-sectional view of a display module is shown in FIG.

[0064] refer to Figure 4 , an embodiment of the display module DM may include an electronic panel EP and a panel protection layer PPL disposed under the electronic panel EP. The electronic panel EP may include a display panel DP, an input sensing unit ISP disposed on the display panel DP, and an anti-reflection layer RPL disposed on the input sensing unit ISP. The display panel DP may be a flexible display panel. In an embodiment, for example, the display panel DP may include a flexible display panel and a plurality of devices disposed on the flexible display panel.

[0065] According to an embodiment of the present disclosure, the display panel DP may be an emission type panel, but the present disclosure is not particularly limited thereto. In an embodiment, for example, the display panel DP may be an organic light emitting display panel or an inorganic light emitting display panel. The light emitting layer of the organic light emitting display panel may include an organic light emitting material. The light emitting layer of the inorganic light emitting display panel may include quantum dots or quantum rods. Hereinafter, for ease of description, an embodiment in which the display panel DP is an organic light emitting display panel will be described, but is not limited thereto.

[0066] The input sensing unit ISP may include a plurality of sensing parts (not shown) to sense an external input in a capacitive manner. The input sensing unit ISP may be directly formed on the display panel DP when manufacturing the display module DM.

[0067] The anti-reflection layer RPL may be disposed on the input sensing unit ISP. The anti-reflection layer RPL may be directly disposed on the input sensing unit ISP when manufacturing the display module DM. The anti-reflection layer RPL may be defined as a film that prevents external light from being reflected. The anti-reflection layer RPL may reduce the reflectivity of external light incident from the top surface of the display device DD toward the display panel DP.

[0068] In an embodiment, the input sensing unit ISP may be directly formed on the display panel DP, and the anti-reflection layer RPL may be directly formed on the input sensing unit ISP, but the embodiments of the present disclosure are not limited thereto. In an embodiment, for example, the input sensing unit ISP may be separately manufactured and attached to the display panel DP through an adhesive layer, and the anti-reflection layer RPL may be separately manufactured and attached to the input sensing unit ISP through an adhesive layer.

[0069] The panel protection layer PPL may be disposed under the display panel DP. The panel protection layer PPL may protect a lower portion of the display panel DP. The panel protection layer PPL may include a flexible plastic material. In an embodiment, for example, the panel protection layer PPL may include polyethylene terephthalate (PET).

[0070] Figure 5 yes Figure 3 A plan view of the display module is shown in FIG.

[0071] refer to Figure 5 , an embodiment of the display module DM may include a display panel DP, a scan driving unit SDV, a data driving unit DDV, and a light emission driving unit EDV.

[0072] The display panel DP may include a first area AA1, a second area AA2, and a bending area BA interposed therebetween. The bending area BA may extend in a first direction DR1, and the first area AA1, the bending area BA, and the second area AA2 may be arranged in a second direction DR2.

[0073] The first area AA1 may include a display area DA and a non-display area NDA around the display area DA. The non-display area NDA may surround the display area DA. The display area DA may be an area for displaying an image, and the non-display area NDA may be an area in which an image is not displayed. The second area AA2 and the bending area BA may be areas in which an image is not displayed.

[0074] When viewed in the first direction DR1, the first area AA1 may include a first non-folding area NFA1, a second non-folding area NFA2, and a folding area FA interposed between the first non-folding area NFA1 and the second non-folding area NFA2. The first hole area HA1 and the second hole area HA2 may be defined in the display area DA and the second non-folding area NFA2.

[0075] The display panel DP may include a plurality of pixels PX, a plurality of scan lines SL1 to SLm, a plurality of data lines DL1 to DLn, a plurality of light emission lines ELL1 to ELLm, a first control line CSL1 and a second control line CSL2, a power line PL, a plurality of connection lines CNL, and a plurality of pads PD. Here, "m" and "n" are natural numbers greater than 0. The pixels PX may be disposed in the display area DA and may be connected to the scan lines SL1 to SLm, the data lines DL1 to DLn, and the light emission lines ELL1 to ELLm.

[0076] The scan driving unit SDV and the light emission driving unit EDV may be disposed in the non-display area NDA. The scan driving unit SDV and the light emission driving unit EDV may be disposed in the non-display area NDA adjacent to the side portions of the first area AA1 opposite to each other in the first direction DR1. The data driving unit DDV may be disposed in the second area AA2. The data driving unit DDV may be manufactured in the form of an integrated circuit chip and mounted in the second area AA2.

[0077] The scan lines SL1 to SLm may be electrically connected to the scan driving unit SDV while extending in the first direction DR1. The plurality of data lines DL1 to DLn may extend in the second direction DR2 and may be connected to the data driving unit DDV through the bending area BA. The light emission lines ELL1 to ELLm may be electrically connected to the light emission driving unit EDV while extending in the first direction DR1.

[0078] The power line PL may extend in the second direction DR2 and may be disposed in the non-display area NDA. The power line PL may be interposed between the display area DA and the light emission driving unit EDV, but the present disclosure is not limited thereto. In an embodiment, for example, the power line PL may be interposed between the display area DA and the scan driving unit SDV.

[0079] The power line PL may extend in the second area AA2 through the bending area BA. When viewed in a plan view, the power line PL may extend toward a lower end portion of the second area AA2. The power line PL may receive a driving voltage.

[0080] The connection line CNL may extend in the first direction DR1 while being arranged in the second direction DR2. The connection line CNL may be linked to the power line PL and the pixel PX. A driving voltage may be applied to the pixel PX through the power line PL and the connection line CNL connected to each other.

[0081] The first control line CSL1 may be connected to the scan driving unit SDV and may extend toward the lower end portion of the second area AA2 through the bending area BA. The second control line CSL2 may be connected to the light emission driving unit EDV and may extend toward the lower end portion of the second area AA2 through the bending area BA. The data driving unit DDV may be interposed between the first control line CSL1 and the second control line CSL2.

[0082] The pad PD may be disposed adjacent to a lower end portion of the second area AA2 when viewed in a plan view. The data driving unit DDV, the power line PL, the first control line CSL1, and the second control line CSL2 may be connected to the pad PD.

[0083] The data lines DL1 to DLn may be connected to the associated pads PD through the data driving unit DDV. In an embodiment, for example, the data lines DL1 to DLn may be connected to the data driving unit DDV, and the data driving unit DDV may be connected to the pads PD corresponding to the data lines DL1 to DLn.

[0084] Although not shown, the printed circuit board is connected to the pad PD, and the timing controller and the voltage generator may be provided on the printed circuit board. The timing controller may be manufactured with an integrated circuit chip and may be mounted on the printed circuit board. The timing controller and the voltage generator may be connected to the pad PD through the printed circuit board.

[0085] The timing controller may control the operation of the scan driving unit SDV, the data driving unit DDV, and the light emission driving unit EDV. The timing controller may generate a scan control signal, a data control signal, and a light emission control signal in response to a control signal received from the outside. The voltage generator may generate a driving voltage.

[0086] The scan control signal may be provided to the scan driving unit SDV through the first control line CSL1. The light emission control signal may be provided to the light emission driving unit EDV through the second control line CSL2. The data control signal may be provided to the data driving unit DDV. The timing controller may receive an image signal from the outside, and convert the image signal in a data format to match the interface specification of the data driving unit DDV, so that the converted signal is provided to the data driving unit DDV.

[0087] The scan driving unit SDV may generate a plurality of scan signals in response to the scan control signal. The scan signals may be applied to the pixels PX through the scan lines SL1 to SLm. The scan signals may be sequentially applied to the pixels PX.

[0088] The data driving unit DDV may generate a plurality of data voltages corresponding to the image signal in response to the data control signal. The data voltages may be applied to the pixels PX through the data lines DL1 to DLn. The light emission driving unit EDV may generate a plurality of light emission signals in response to the light emission control signal. The light emission signals may be applied to the pixels PX through the light emission lines ELL1 to ELLm.

[0089] The pixel PX may receive a data voltage in response to a scan signal. As the pixel PX emits light having a brightness corresponding to the data voltage in response to a light emission signal, the pixel PX may display an image. The time for emitting light from the pixel PX may be controlled by the light emission signal.

[0090] Figure 6 is shown with Figure 5 A cross-sectional view of a cross section of an electronic panel corresponding to any pixel shown in FIG.

[0091] refer to Figure 6 In an embodiment, the pixel PX may include a transistor TR and a light emitting element OLED. The light emitting element OLED may include a first electrode AE ​​(or anode), a second electrode CE (or cathode), a hole control layer HCL, an electron control layer ECL, and a light emitting layer EML.

[0092] The transistor TR and the light emitting element OLED may be disposed on the substrate SUB. Figure 6 In the embodiment, although one transistor TR is shown for convenience of explanation, the pixel PX may include a plurality of transistors for driving the light emitting element OLED and at least one capacitor.

[0093] The display area DA may include a light emitting area LA corresponding to each pixel PX and a non-light emitting area NLA disposed at a peripheral portion of the light emitting area LA. The light emitting element OLED may be disposed in the light emitting area LA.

[0094] The buffer layer BFL may be disposed on the substrate SUB. The buffer layer BFL may be an inorganic layer. The semiconductor pattern may be disposed on the buffer layer BFL. The semiconductor pattern may include polysilicon, amorphous silicon, or metal oxide.

[0095] The semiconductor pattern may be doped with an N-type dopant or a P-type dopant. The semiconductor pattern may include a heavily doped region and a lightly doped region. The conductivity of the heavily doped region may be greater than the conductivity of the lightly doped region. The heavily doped region may be substantially used as a source electrode or a drain electrode of the transistor TR. The lightly doped region may substantially correspond to an active portion (or channel) of the transistor TR.

[0096] The source S, active portion A, and drain D of the transistor TR may be formed by a semiconductor pattern (or defined by a portion of the semiconductor pattern). The first insulating layer INS1 may be disposed on the semiconductor pattern. The gate G of the transistor TR may be disposed on the first insulating layer INS1. The second insulating layer INS2 may be disposed on the gate G. The third insulating layer INS3 may be disposed on the second insulating layer INS2.

[0097] The connection electrode CNE may include a first connection electrode CNE1 and a second connection electrode CNE2 to connect the transistor TR to the light emitting element OLED. The first connection electrode CNE1 may be disposed on the third insulating layer INS3 and may be connected to the drain electrode D through a first contact hole CH1 defined in the first to third insulating layers INS1 to INS3.

[0098] The fourth insulating layer INS4 may be disposed on the first connection electrode CNE1. The fifth insulating layer INS5 may be disposed on the fourth insulating layer INS4. The second connection electrode CNE2 may be disposed on the fifth insulating layer INS5. The second connection electrode CNE2 may be connected to the first connection electrode CNE1 through a second contact hole CH2 defined in the fourth insulating layer INS4 and the fifth insulating layer INS5.

[0099] The sixth insulating layer INS6 may be disposed on the second connection electrode CNE2. The layers including the buffer layer BFL to the sixth insulating layer INS6 may be defined as a circuit element layer DP-CL. The first to sixth insulating layers INS1 to INS6 may be inorganic layers or organic layers.

[0100] The first electrode AE ​​may be disposed on the sixth insulating layer INS6. The first electrode AE ​​may be connected to the second connection electrode CNE2 through a third contact hole CH3 defined in the sixth insulating layer INS6. A pixel defining layer PDL may be disposed on the first electrode AE ​​and the sixth insulating layer INS6 to define an opening PX_OP exposing a specific portion of the first electrode AE.

[0101] The hole control layer HCL may be disposed on the first electrode AE ​​and the pixel defining layer PDL. The hole control layer HCL may include a hole transport layer and a hole injection layer.

[0102] The light emission layer EML may be disposed on the hole control layer HCL. The light emission layer EML may be disposed in a region corresponding to the opening PX_OP. The light emission layer EML may include an organic material and / or an inorganic material. The light emission layer EML may generate light of any one of red, green, and blue.

[0103] The electron control layer ECL may be disposed on the light emitting layer EML and the hole control layer HCL. The electron control layer ECL may include an electron transport layer and an electron injection layer. The hole control layer HCL and the electron control layer ECL may be commonly disposed in the light emitting area LA and the non-light emitting area NLA.

[0104] The second electrode CE may be disposed on the electronic control layer ECL. The second electrode CE may be commonly disposed in the pixel PX. The layer in which the light emitting element OLED is disposed may be defined as a display element layer DP-OLED.

[0105] The thin film encapsulation layer TFE may be disposed on the second electrode CE to cover the pixel PX. The thin film encapsulation layer TFE may include a first encapsulation layer EN1, a second encapsulation layer EN2 on the first encapsulation layer EN1, and a third encapsulation layer EN3 on the second encapsulation layer EN2.

[0106] The first encapsulation layer EN1 and the third encapsulation layer EN3 may include an inorganic insulating layer and protect the pixel PX from moisture / oxygen. The second encapsulation layer EN2 may protect the pixel PX from foreign substances such as dust particles.

[0107] A first voltage may be applied to the first electrode AE ​​through the transistor TR, and a second voltage having a level lower than that of the first voltage may be applied to the second electrode CE. Excitons may be formed when holes and electrons injected into the light emitting layer EML are recombined with each other. When the excitons are transformed to a ground state, the light emitting element OLED may emit light.

[0108] The input sensing unit ISP may be disposed on the thin film encapsulation layer TFE. In an implementation, the input sensing unit ISP may be directly fabricated on a top surface of the thin film encapsulation layer TFE.

[0109] The base layer BS may be disposed on the thin film encapsulation layer TFE. The base layer BS may include an inorganic insulating layer. At least one inorganic insulating layer may be used as the base layer BS and may be disposed on the thin film encapsulation layer TFE.

[0110] The input sensing unit ISP may include a first conductive pattern CTL1 and a second conductive pattern CTL2 disposed on the first conductive pattern CTL1. The first conductive pattern CTL1 may be disposed on the base layer BS. The insulating layer TINS ​​may be disposed on the base layer BS to cover the first conductive pattern CTL1. The insulating layer TINS ​​may include an inorganic insulating layer or an organic insulating layer. The second conductive pattern CTL2 may be disposed on the insulating layer TINS.

[0111] The first and second conductive patterns CTL1 and CTL2 may overlap the non-light emitting area NLA. In an implementation, the first and second conductive patterns CTL1 and CTL2 may be disposed in the non-light emitting area NLA between the light emitting areas LA.

[0112] The first conductive pattern CTL1 and the second conductive pattern CTL2 may form a sensor of the above-mentioned input sensing unit ISP. In an embodiment, for example, the first conductive pattern CTL1 and the second conductive pattern CTL2 in the form of a grid may be separated from each other in a specific area to form a sensor. A portion of the second conductive pattern CTL2 may be connected or linked to the first conductive pattern CTL1.

[0113] The anti-reflection layer RPL may be disposed on the second conductive pattern CTL2. The anti-reflection layer RPL may include a black matrix BM and a plurality of color filters CFT. The black matrix BM may overlap the non-emission area NLA, and the color filter CFT may overlap each of the emission areas LA.

[0114] The black matrix BM may be disposed on the insulating layer TINS ​​to cover the second conductive pattern CTL2. The light emitting area LA and the opening B_OP overlapping the opening PX_OP may be defined in the black matrix BM. The black matrix BM may absorb light to block light. The width of the opening B_OP may be greater than the width of the opening PX_OP.

[0115] The color filter CFT may be disposed on the insulating layer TINS ​​and the black matrix BM. The color filter CFT may be disposed on the opening B_OP. The planarization insulating layer PINS may be disposed on the color filter CFT. The planarization insulating layer PINS may provide a flat top surface.

[0116] When external light toward the display panel DP is reflected from the display panel DP and provided to an external user again, the user may visually observe the external light similar to a mirror. In order to prevent the above phenomenon or reduce such reflection of external light, the anti-reflection layer RPL may include a plurality of color filters CFT to display the same color as the color of the pixel PX of the display panel DP. The color filter CFT may filter out external light of the same color as the color of the pixel PX. In this case, the external light may not be observed by the user.

[0117] However, the embodiments of the present disclosure are not limited thereto. In an embodiment, the anti-reflection layer RPL may include a polarizing film to reduce the reflectance index of external light. The polarizing film may be manufactured separately and may be attached to the input sensing unit ISP through an adhesive layer. The polarizing film may include a phase retarder and / or a polarizer.

[0118] Figure 7 It is along Figure 5 A cross-sectional view taken along line II' shown in FIG. Figure 8 is shown in a bent state Figure 7 View of the bending area shown in .

[0119] In particular, Figure 7 A cross section of the display module DM corresponding to the line II′ and a cross section of the window module WM are shown.

[0120] refer to Figure 7 , an embodiment of the display device DD may include a display module DM, a window module WM disposed on the display module DM, and a support unit SUP disposed below the display module DM. The display module DM may be a flexible display module. The display module DM may include a first non-folding area NFA1, a folding area FA, and a second non-folding area NFA2.

[0121] The window module WM may include a window WIN, a window protection layer WP, a hard coating layer HC, and a first adhesive layer AL1 and a second adhesive layer AL2. The display module DM may include an electronic panel EP, an impact absorbing layer ISL, a panel protection layer PPL, a barrier layer BRL, and third to sixth adhesive layers AL3 to AL6. The support unit SUP may include a digitizer DGT, a support plate PLT, a cover layer COV, and a seventh adhesive layer AL7.

[0122] The configuration or characteristics of the electronic panel EP and the panel protection layer PPL are the same as those mentioned above. Figure 4 Those described are substantially the same, and thus any repeated detailed description thereof will be omitted. The impact absorbing layer ISL may be disposed on the electronic panel EP. The impact absorbing layer ISL may protect the electronic panel EP by absorbing an external impact applied from the top of the display device DD toward the electronic panel EP. The impact absorbing layer ISL may be manufactured in the form of a stretch film.

[0123] The impact absorbing layer ISL may include a flexible plastic material. The flexible plastic material may be defined as a synthetic resin film. In an embodiment, for example, the impact absorbing layer ISL may include a flexible plastic material such as polyimide (PI) or polyethylene terephthalate (PET).

[0124] The window WIN may be disposed on the impact absorbing layer ISL. The window WIN may protect the electronic panel EP from external scratches. The window WIN may have an optically transparent property. In an embodiment, the window WIN may include glass. However, the present disclosure is not limited thereto, and the window WIN may include a synthetic resin film.

[0125] The window WIN may have a multi-layer structure or a single-layer structure. In an embodiment, for example, the window WIN may include a synthetic resin film bonded to each other by an adhesive or a glass substrate and a synthetic resin film coupled to each other by an adhesive.

[0126] The window protection layer WP may be disposed on the window WIN. The window protection layer WP may include a flexible plastic material such as polyimide or polyethylene terephthalate. The hard coating layer HC may be disposed on a top surface of the window protection layer WP.

[0127] The printing layer PIT may be disposed on the bottom surface of the window protection layer WP. In an embodiment, the printing layer PIT may have a black color, but the color of the printing layer PIT is not limited thereto. The printing layer PIT may be adjacent to an edge of the window protection layer WP.

[0128] The barrier layer BRL may be disposed below the panel protection layer PPL. The barrier layer BRL may increase resistance to a compressive force caused by external pressure. Therefore, the barrier layer BRL may prevent the electronic panel EP from being deformed. The barrier layer BRL may include a flexible plastic material such as polyimide or polyethylene terephthalate.

[0129] The blocking layer BRL may have a color that absorbs light. In an embodiment, for example, the blocking layer BRL may have a black color. In this case, when the display module DM is observed from above the display module DM, components disposed under the blocking layer BRL may not be observed.

[0130] The first adhesive layer AL1 may be interposed between the window protection layer WP and the window WIN. The window protection layer WP and the window WIN may be bonded to each other through the first adhesive layer AL1. The first adhesive layer AL1 may cover the printed layer PIT.

[0131] The second adhesive layer AL2 may be interposed between the window WIN and the impact absorbing layer ISL. The window WIN and the impact absorbing layer ISL may be combined with each other through the second adhesive layer AL2.

[0132] The third adhesive layer AL3 may be interposed between the impact absorbing layer ISL and the electronic panel EP. The impact absorbing layer ISL and the electronic panel EP may be combined with each other through the third adhesive layer AL3.

[0133] The fourth adhesive layer AL4 may be interposed between the electronic panel EP and the panel protection layer PPL. The electronic panel EP and the panel protection layer PPL may be combined with each other through the fourth adhesive layer AL4.

[0134] The fifth adhesive layer AL5 may be interposed between the panel protection layer PPL and the barrier layer BRL. The panel protection layer PPL and the barrier layer BRL may be combined with each other through the fifth adhesive layer AL5.

[0135] The sixth adhesive layer AL6 may be interposed between the barrier layer BRL and the digitizer DGT. The barrier layer BRL and the digitizer DGT may be combined with each other through the sixth adhesive layer AL6.

[0136] The sixth adhesive layer AL6 may overlap the first non-folding area NFA1 and the second non-folding area NFA2, and may not overlap the folding area FA. In other words, the sixth adhesive layer AL6 may not be disposed in the folding area FA.

[0137] The digitizer DGT may be disposed below the barrier layer BRL. The digitizer DGT may include a plurality of layers, which will be described in detail later.

[0138] The digitizer DGT may support the display module DM below the display module DM. In an embodiment, for example, the digitizer DGT may include a non-metallic material such as a reinforced fiber composite material to be more rigid than the display module DM. The reinforced fiber composite material may be a carbon fiber reinforced plastic (CFRP) or a glass fiber reinforced plastic (GFRP). Hereinafter, for ease of description, an embodiment in which the digitizer DGT has a structure including glass fiber reinforced plastic will be described in detail, but is not limited thereto.

[0139] The digitizer DGT is a device for receiving information about a position indicated by a user on a display surface. The digitizer DGT can be implemented by an electromagnetic method (or electromagnetic resonance). In an embodiment, for example, the digitizer DGT may include a digitizer sensor substrate (not shown) including a plurality of coils. However, the present disclosure is not limited thereto, and the digitizer DGT may be implemented by active electrostatics.

[0140] When the user moves the electromagnetic pen on the display device DD, the electromagnetic pen is driven in response to an alternating current (AC) signal to generate a vibrating magnetic field, and the magnetic field oscillation can induce a signal to the coil. The position of the electromagnetic pen can be detected by the signal induced in the coil. The digitizer DGT can determine the position of the electromagnetic pen by detecting the electromagnetic change caused by the approach of the electromagnetic pen.

[0141] A plurality of openings OP may be defined in a portion of the digitizer DGT overlapping the folding area FA. The openings OP may be formed through a portion of the digitizer DGT in the third direction DR3. The openings OP may be formed in the digitizer DGT by a laser process or a micro-spray process.

[0142] Since the opening OP is defined in the portion of the digitizer DGT overlapping the folding area FA, the flexibility of the portion of the digitizer DGT overlapping the folding area FA can be increased. Therefore, the digitizer DGT can be easily folded around the folding area FA.

[0143] The cover layer COV may be disposed below the digitizer DGT. The cover layer COV may cover the opening OP defined in the digitizer DGT below the digitizer DGT. The cover layer COV may overlap the folding area FA and may not overlap the first non-folding area NFA1 and the second non-folding area NFA2. In other words, the cover layer COV may not be disposed in the first non-folding area NFA1 and the second non-folding area NFA2. The cover layer COV may contact the bottom surface of the portion of the digitizer DGT in which the opening OP is formed.

[0144] The cover layer COV may have an elastic modulus lower than that of the digitizer DGT. In an embodiment, for example, the cover layer COV may include thermoplastic polyurethane or rubber, but the material of the cover layer COV is not limited thereto. The cover layer COV may be manufactured in the form of a sheet and attached to the digitizer DGT.

[0145] The support plate PLT may be disposed under the digitizer DGT. The support plate PLT may overlap the first non-folding area NFA1 and the second non-folding area NFA2, respectively, and may not overlap the folding area FA. The support plate PLT may be divided into two parts and disposed in the first non-folding area NFA1 and the second non-folding area NFA2, respectively.

[0146] The support plate PLT may be more rigid than the display module DM. In an embodiment, the support plate PLT may include a metal material such as stainless steel (eg, SUS 316), but the material of the support plate PLT is not limited thereto. In an embodiment, the support plate PLT may include a non-metal material such as plastic.

[0147] The seventh adhesive layer AL7 may be interposed between the digitizer DGT and the support plate PLT. The digitizer DGT and the support plate PLT may be combined with each other through the seventh adhesive layer AL7. The seventh adhesive layer AL7 may not be provided in the folding area FA.

[0148] The first to seventh adhesive layers AL1 to AL7 may include a transparent adhesive such as a pressure sensitive adhesive (PSA) or an optically clear adhesive (OCA), but the type of the adhesive is not limited thereto.

[0149] The first hole H1 may be defined in a portion of the display module DM that overlaps with the first hole area HA1. The first hole H1 may be defined as a previous layer (or a layer immediately below) from the support plate PLT to the panel protection layer PPL. In an embodiment, for example, the first hole H1 may be integrally defined in the barrier layer BRL, the digitizer DGT, the support plate PLT, and the fifth to seventh adhesive layers AL5 to AL7.

[0150] Although not shown, the second hole (see Fig. 9 The second hole H2 is formed in the second hole area HA2, and the second hole can be defined as the previous layer from the support plate PLT to the panel protection layer PPL in the same manner as the first hole H1. The camera CA can be arranged to overlap with the first hole H1, and the sensor SN can be arranged to overlap with the second hole.

[0151] refer to Figure 7 and Figure 8 , the panel protection layer PPL and the fourth adhesive layer AL4 may not be disposed under the bending area BA. The panel protection layer PPL and the fourth adhesive layer AL4 may be disposed under the second area AA2 of the electronic panel EP. The data driving unit DDV may be disposed on the second area AA2 of the electronic panel EP.

[0152] The printed circuit board PCB may be connected to the second area AA2 of the electronic panel EP. The printed circuit board PCB may be connected to one side of the second area AA2. Since the bending area BA may be bent, the second area AA2 may be disposed below the first area AA1. Therefore, the data driving unit DDV and the printed circuit board PCB may be disposed below the first area AA1.

[0153] Fig. 9 yes Figure 7 A perspective view of the digitizer shown in FIG.

[0154] refer to Figure 7 and Fig. 9 In an embodiment, the digitizer DGT includes a first non-folding portion NFP1, a folding portion FP, and a second non-folding portion NFP2 arranged in a second direction DR2. The first non-folding portion NFP1, the folding portion FP, and the second non-folding portion NFP2 may overlap with the first non-folding area NFA1, the folding area FA, and the second non-folding area NFA2, respectively.

[0155] A grid pattern may be defined in the folded portion FP. In an embodiment, for example, a plurality of openings OP may be defined in the folded portion FP. The openings OP may be arranged by a specific rule or pattern. The openings OP may be arranged in a grid form to form a grid pattern in the folded portion FP. When viewed in a cross-sectional view, the area provided with the openings OP may be smaller than the width of the folded portion FP.

[0156] Since the opening OP is defined in the folded portion FP, the area of ​​the folded portion FP is reduced, and thus the rigidity of the folded portion FP can be reduced. Therefore, in such an embodiment in which the opening OP is defined in the folded portion FP, the flexibility of the folded portion FP can be increased compared to the case in which the opening OP is not defined in the folded portion FP. Therefore, the folded portion FP can be folded more easily.

[0157] The first hole H1 and the second hole H2 described above may be defined in the second non-folding portion NFP2. The first hole H1 and the second hole H2 may be adjacent to edges of the second non-folding portion NFP2.

[0158] Fig.10 yes Fig. 9 An enlarged plan view of the first area shown in FIG.

[0159] refer to Fig.10 In an embodiment, the folding portion FP may include a curved surface portion CSP, a first extension portion EXP1, a second extension portion EXP2, a first inverse curvature portion ICV1, and a second inverse curvature portion ICV2. The curved surface portion CSP, the first extension portion EXP1, the second extension portion EXP2, the first inverse curvature portion ICV1, and the second inverse curvature portion ICV2 may be arranged in the second direction DR2.

[0160] In an embodiment, for example, the curved surface portion CSP may be provided at a central portion of the folding portion FP. The first inverse curvature portion ICV1 may be defined as a portion of the folding portion FP adjacent to the first non-folding portion NFP1. The second inverse curvature portion ICV2 may be defined as a portion of the folding portion FP adjacent to the second non-folding portion NFP2.

[0161] The curved surface portion CSP may be interposed between the first extension portion EXP1 and the second extension portion EXP2. The first extension portion EXP1 may be interposed between the first inverse curvature portion ICV1 and the curved surface portion CSP. The second extension portion EXP2 may be interposed between the second inverse curvature portion ICV2 and the curved surface portion CSP.

[0162] The first inverse curvature portion ICV1 may be interposed between the first non-folded portion NFP1 and the first extended portion EXP1. The second inverse curvature portion ICV2 may be interposed between the second non-folded portion NFP2 and the second extended portion EXP2.

[0163] An opening OP may be defined in the curved surface portion CSP. The opening OP may be arranged in the first direction DR1 and the second direction DR2. The opening OP may extend longer in the first direction DR1 than in the second direction DR2. The opening OP may extend in a direction parallel to the above-mentioned folding axis FX.

[0164] The opening OP may include a first sub-opening portion SOP1 arranged in the hth column and a second sub-opening portion SOP2 arranged in the (h+1)th column. Here, "h" is a natural number greater than 0. The column may correspond to the first direction DR1. The second sub-opening portion SOP2 may be adjacent to the first sub-opening portion SOP1 in the second direction DR2. The first sub-opening portion SOP1 may be arranged to be offset relative to the second sub-opening portion SOP2.

[0165] Fig.11 It is shown in the folded (or folded) state Figure 7 A view of a display device shown in FIG.

[0166] For ease of illustration and description, Figure 7 The bending area BA and the second area AA2 shown in FIG. Fig.11 In addition, the display module DM and the window module WM are shown as a single-layer structure, and the adhesive layers AL6, AL7 and the cover layer COV are in Fig.11 is omitted.

[0167] refer to Figure 7 and Fig.11 , the embodiment of the display device DD can be folded inwardly with respect to the folding axis FX. The folding area FA can be bent so that the first non-folding area NFA1 and the second non-folding area NFA2 can face each other. The display device DD can be changed from the first state ( Figure 7 ) changes to a second state ( Fig.11 ), or change from the second state to the first state. This folding operation can be repeatedly performed.

[0168] Since the display module DM is a flexible display module, the folding area FA of the display module DM may be easily bent. Since a plurality of openings OP overlapping the folding area FA are defined in the digitizer DGT, the folding portion FP may be easily bent due to the openings OP.

[0169] The digitizer DGT may be folded in the form of a dumbbell. When the folding portion FP is folded, the curved surface portion CSP may be curved to have a specific curvature. The curved surface portion CSP may be curved to have a first curvature radius R1.

[0170] The first inverse curvature portion ICV1 may be curved inversely to the curved surface portion CSP. The second inverse curvature portion ICV2 may be curved inversely to the curved surface portion CSP. The second inverse curvature portion ICV2 may have a shape symmetrical to that of the first inverse curvature portion ICV1.

[0171] When the folding part FP is folded, the support plate PLT can be respectively disposed on the bottom surfaces of the first non-folding part NFP1 and the second non-folding part NFP2 to maintain a flat state. The first non-folding area NFA1 and the second non-folding area NFA2 and the first non-folding part NFP1 and the second non-folding part NFP2 can maintain a flat shape by the support plate PLT.

[0172] When the folding portion FP is folded, the distance between the first non-folding portion NFP1 and the second non-folding portion NFP2 in the third direction DR3 may be less than twice the first curvature radius R1 (eg, diameter). According to this configuration, the digitizer DGT may be folded in the form of a dumbbell.

[0173] The display device DD may further include a first wing panel WPT1 and a second wing panel WPT2 so that the digitizer DGT is folded in the form of a dumbbell to maintain the form of a dumbbell. The first wing panel WPT1 may be disposed on the bottom surfaces of the first inverse curvature portion ICV1 and the first extension portion EXP1, and the second wing panel WPT2 may be disposed on the bottom surfaces of the second inverse curvature portion ICV2 and the second extension portion EXP2.

[0174] The first and second flaps WPT1 and WPT2 may be pivotably coupled to a support plate PLT disposed on bottom surfaces of the first and second non-folding portions NFP1 and NFP2. The first and second flaps WPT1 and WPT2 rotate around the support plate PLT to form a specific angle relative to the support plate PLT.

[0175] The first wing panel WPT1 may support the first inverse curvature portion ICV1 and the first extension portion EXP1. The second wing panel WPT2 may support the second inverse curvature portion ICV2 and the second extension portion EXP2.

[0176] Fig.12 It is shown Figure 7 View of the first sensing coil of the digitizer shown in FIG. Fig.13 It is shown Figure 7 . A view of the second sensing coil of the digitizer shown in FIG.

[0177] In particular, Fig.12 and Fig.13 Shown in plan view.

[0178] In particular, the second non-folded portion NFP2 is shown to be disposed on the right side of the first non-folded portion NFP1.

[0179] refer to Fig.12 When viewed in a plan view, the area of ​​the digitizer DGT may include an active area AA and an inactive area NAA around the active area AA. The inactive area NAA may surround the active area AA. The active area AA may be aligned with the above-mentioned display area DA (see Figure 1 ), and the inactive area NAA may overlap with the non-display area NDA (see Figure 1 )overlapping.

[0180] The digitizer DGT may include a connector CNT, a plurality of first connector connection lines CCL1, and a plurality of first sensing coils RF. The connector CNT may be disposed at one side of the digitizer DGT. In an embodiment, for example, the connector CNT may be disposed in the passive area NAA on the right side. The connector CNT may be disposed in the second non-folding portion NFP2.

[0181] The first connector line CCL1 may be disposed in the right inactive area NAA. The first connector line CCL1 may extend in the second direction DR2 and may be arranged in the first direction DR1 to be connected to the connector CNT. The first sensing coil RF may be connected to the connector CNT through the first connector line CCL1.

[0182] The first sensing coil RF may be disposed in the passive area NAA and the active area AA. The first sensing coil RF may extend from the second non-folding portion NFP2 to the first non-folding portion NFP1. The first sensing coil RF may extend through the opening OP in the active area AA. In an embodiment, for example, the first sensing coil RF may extend from the folding portion FP through the opening OP. The first sensing coil RF may extend in the folding portion FP to bend along the edge of the opening OP.

[0183] The first sensing coil RF may extend from the connector CNT to form a loop with the first connector line CCL1. In an embodiment, for example, the first sensing coil RF extending from the connector CNT may extend to the passive area NAA on the right, the active area AA, and the passive area NAA on the left, and then extend to the active area AA and the passive area NAA on the right to be connected to the first connector line CCL1.

[0184] exist Fig.12 In FIG. 5 , some of the first sensing coils RF are shown in the form of loops, and the remaining first sensing coils RF are shown to extend only in the second direction DR2 within the active area AA, rather than in the form of loops. Fig.12 In the embodiment, for convenience of explanation, the first connection lines CL1 of the remaining first sensing coils RF are omitted, and the remaining first sensing coils RF may extend in the form of a loop.

[0185] Each of the first sensing coils RF may include a plurality of first extension lines EL1 and a plurality of first connection lines CL1. The first extension lines EL1 may be provided in the active area AA to extend in the second direction DR2, and may be arranged in the first direction DR1. In an embodiment, for example, each of the first sensing coils RF may include a pair of first extension lines EL1, and the pair of first extension lines EL1 may extend parallel to each other in the second direction DR2.

[0186] The first extension lines EL1 of the first sensing coil RF may be arranged adjacent to each other in pairs in the active area AA to extend parallel to each other in the second direction DR2. The first extension lines EL1 may extend and pass between the openings OP. The first extension lines EL1 may be bent along the edge of the opening OP in the folded portion FP.

[0187] The length of the first extension line EL1 may be different from the length of the first connection line CL1. In an embodiment, for example, the first extension line EL1 may be longer than the first connection line CL1, but embodiments of the present disclosure are not limited thereto.

[0188] The first connection line CL1 may be disposed in the inactive area NAA and extend in the first direction DR1. In an embodiment, for example, the first connection line CL1 may be disposed in the inactive area NAA at the left and right sides. The first connection line CL1 may be connected to the first extension line EL1. In an embodiment, for example, the first connection line CL1 of each of the first sensing coils RF may be connected to opposite end portions of the first extension line EL1 of each of the first sensing coils RF.

[0189] The first extension line EL1 may be disposed in a different layer from the first connection line CL1. In an embodiment, for example, the first connection line CL1 may be disposed below the first extension line EL1. The first connection line CL1 may be connected to the first extension line EL1 through the contact hole CH. Such a stacked structure will be described in more detail later.

[0190] The first connector connection line CCL1 may be connected to the first connection line CL1 in the inactive area NAA disposed at the right side. The first connector connection line CCL1 may be disposed in the same layer as the first extension line EL1, and may be disposed in a layer different from that of the first connection line CL1. The first connection line CL1 may be disposed below the first connector connection line CCL1. The first connection line CL1 may be connected to the first connector connection line CCL1 through the contact hole CH.

[0191] Each of the first extension lines EL1 may include a first extension line EX1 disposed in the first non-folding part NFP1 and the second non-folding part NFP2, respectively, and a first pattern part PP1 disposed in the curved surface part CSP of the folding part FP. The first extension line EX1 may extend to the first and second inverse curvature parts ICV1 and ICV2 and the first and second extension parts EXP1 and EXP2.

[0192] The first pattern portion PP1 may extend through the opening OP. The first pattern portion PP1 may extend in the curved surface portion CSP to bend along the edge of the opening OP. The first pattern portion PP1 may extend from the first extension line EX1. In an embodiment of the present disclosure, the first pattern portion PP1 may be integrally formed with the first extension line EX1 as a single integral and inseparable portion.

[0193] refer to Fig.12 and Fig.13 The digitizer DGT may include a plurality of second sensing coils CF, a plurality of bridge lines BL, and a plurality of second connector lines CCL2.

[0194] The second sensing coil CF may be connected to the second connector line CCL2, and the second connector line CCL2 may be connected to the connector CNT. The second sensing coil CF may be connected to the connector CNT via the second connector line CCL2. The bridge line BL may be connected to the second sensing coil CF. The second sensing coil CF may extend from the connector CNT to form a loop with the second connector line CCL2.

[0195] exist Fig.13 In FIG. 5 , some of the second sensing coils CF are shown in the form of loops, and the remaining second sensing coils CF are shown to extend only in the first direction DR1 within the active area AA, rather than in the form of loops. Fig.13 In the embodiment, for the convenience of explanation, the second connection wires CL2 of the remaining second sensing coils CF are omitted, and even the remaining second sensing coils CF may extend in the form of a loop.

[0196] The bridge wire BL may be disposed under the second sensing coil CF. The bridge wire BL may include a plurality of first bridge wires BL1, a plurality of second bridge wires BL2, and a plurality of third bridge wires BL3. Fig.13 In the figure, for the convenience of explanation, some of the first bridge lines BL1, some of the second bridge lines BL2, and some of the third bridge lines BL3 are omitted.

[0197] The first bridge line BL1 may be adjacent to the upper and lower sides of the digitizer DGT. The second and third bridge lines BL2 and BL3 may be interposed between the first bridge line BL1 adjacent to the upper side of the digitizer DGT and the first bridge line BL1 adjacent to the lower side of the digitizer DGT.

[0198] The first bridge line BL1 may be adjacent to the opening OP. The first bridge line BL1 may be interposed between the first non-folded portion NFP1 and the curved surface portion CSP and between the second non-folded portion NFP2 and the curved surface portion CSP.

[0199] The second bridge wire BL2 and the third bridge wire BL3 may be adjacent to the opening OP. The second bridge wire BL2 may be interposed between the second non-folding portion NFP2 and the curved surface portion CSP. The third bridge wire BL3 may be interposed between the first non-folding portion NFP1 and the curved surface portion CSP. Some of the third bridge wire BL3 may extend to the first non-folding portion NFP1.

[0200] The second sensing coil CF may include a plurality of second extension lines EL2 , a plurality of second connection lines CL2 , a plurality of second pattern parts PP2 , and a plurality of third connection lines CL3 .

[0201] The second extension line EL2 may be provided in the active area AA to extend in the first direction DR1, and may be arranged in the second direction DR2. The second extension line EL2 may be provided in the first non-folding portion NFP1 and the second non-folding portion NFP2. The second extension line EL2 may be provided in the first extension portion EXP1 and the second extension portion EXP2 and the first inverse curvature portion ICV1 and the second inverse curvature portion ICV2. In the active area AA, the second extension lines EL2 may be provided adjacent to each other in pairs, and may extend parallel to each other in the first direction DR1.

[0202] The second extension line EL2 may be disposed under the first extension line EL1. In other words, in the active area AA, the second sensing coil CF may be disposed under the first sensing coil RF. The second extension line EL2 may be disposed in the same layer as the first connection line CL1.

[0203] The second connection line CL2 may be disposed in the inactive area NAA and extend in the second direction DR2. In an embodiment, for example, the second connection line CL2 may be disposed in the upper and lower inactive areas NAA. The second connection line CL2 may be disposed in the same layer as the first extension line EL1.

[0204] The second connection lines CL2 may be connected to opposite terminals of the second extension line EL2 through the contact holes CH′. Some of the second connection lines CL2 may be connected to the first bridge line BL1 through the contact holes CH′.

[0205] The second pattern portion PP2 may be disposed in the curved surface portion CSP of the folded portion FP. The second pattern portion PP2 may extend through the opening OP. The second pattern portion PP2 may extend to bend along the edge of the opening OP. The second pattern portion PP2 may be connected to the first bridge wire BL1, the second bridge wire BL2, and the third bridge wire BL3 through the contact hole CH'. The second pattern portion PP2 may be disposed in the same layer as the second extension line EL2. The second pattern portion PP2 may be disposed below the first pattern portion PP1.

[0206] The second pattern portion PP2 may include a first second pattern portion (hereinafter, referred to as a "(2-1)th pattern portion") PP2-1 connected to the first bridge wire BL1 and a second second pattern portion (hereinafter, referred to as a "(2-2)th pattern portion") PP2-2 connected to the second bridge wire BL2 and the third bridge wire BL3. Some second connection lines CL2 disposed in the first non-folding portion NFP1 and some second connection lines CL2 disposed in the second non-folding portion NFP2 may be connected to each other through the first bridge wire BL1 and the (2-1)th pattern portion PP2-1.

[0207] The second connector connection lines CCL2 may be connected to the connector CNT and extend in the second direction DR2. The second connector connection lines CCL2 may be disposed in the same layer as the first extension lines EL1 described above. Some of the second connector connection lines CCL2 may be connected to the second connection lines CL2, and others of the second connector connection lines CCL2 may extend to the active area AA to be connected to some of the second extension lines EL2.

[0208] The second connector connection line CCL2 may include a plurality of first second lines (hereinafter, to be referred to as "(2-1)th lines") L2-1, a plurality of second second lines (hereinafter, to be referred to as "(2-2)th lines") L2-2, and a plurality of third second lines (hereinafter, to be referred to as "(2-3)th lines") L2-3. The (2-1)th line L2-1 may be disposed in the inactive area NAA at the right side. The (2-1)th line L2-1 may be connected to the third connection line CL3 through the contact hole CH'. The (2-1)th line L2-1 may be connected to the second connection line CL2 through the third connection line CL3.

[0209] The (2-2)th line L2-2 may be disposed in the second non-folding portion NFP2. The (2-2)th line L2-2 may extend to the active area AA and may be connected to some of the second extension lines EL2 through the contact hole CH'. The (2-2)th line L2-2 may be connected to some of the second extension lines EL2 disposed in the active area AA. The (2-2)th line L2-2 may be connected to the second extension line EL2 to form a loop form with the second extension line EL2.

[0210] Each of some of the second extension lines EL2 may include a first second extension line (hereinafter, referred to as the "(2-1)th extension line") EL2-1, a second second extension line (hereinafter, referred to as the "(2-2)th extension line") EL2-2, and a third second extension line (hereinafter, referred to as the "(2-3)th extension line") EL2-3. The (2-1)th extension line EL2-1 may extend in the first direction DR1 and may be connected to terminals of a pair of corresponding second connection lines CL2 through contact holes CH'.

[0211] The (2-2)th extension line EL2-2 and the (2-3)th extension line EL2-3 may extend in the first direction DR1 and may be connected to opposite terminals of a pair of related second connection lines CL2 through contact holes CH'. In the active area AA, the (2-2)th extension line EL2-2 and the (2-3)th extension line EL2-3 may be connected to a pair of related (2-2)th lines L2-2 through contact holes CH', respectively.

[0212] The (2-3)th line L2-3 may be disposed in the second non-folding portion NFP2. The (2-3)th line L2-3 may extend to the active area AA. The (2-3)th line L2-3 may be connected to the second bridge line BL2 through the contact hole CH' in the active area AA. The second bridge line BL2 may be connected to the (2-2)th pattern portion PP2-2 through the contact hole CH'. A pair of (2-3)th lines L2-3 may be connected to a pair of related second bridge lines BL2.

[0213] The (2-2)th pattern portion PP2-2 may be connected to a portion of the (2-2)th extension line EL2-2 disposed in the first non-folding portion NFP1 through a contact hole CH'. In an embodiment, for example, each of the (2-2)th extension line EL2-2 and the (2-3)th extension line EL2-3 of the second extension line EL2 disposed in the first non-folding portion NFP1 may be connected to a pair of corresponding (2-2)th pattern portions PP2-2.

[0214] A pair of (2-2) pattern portions PP2-2 may be connected to the (2-2) extension line EL2-2 and the (2-3) extension line EL2-3 through a pair of corresponding third bridge lines BL3. In an embodiment, for example, the third bridge line BL3 may be interposed between a terminal of the (2-2) pattern portion PP2-2 and a terminal of the (2-2) extension line EL2-2 and a terminal of the (2-3) extension line EL2-3.

[0215] The (2-2)th pattern portion PP2-2 may be connected to the third bridge line BL3 through the contact hole CH'. The third bridge line BL3 may be connected to the (2-2)th extension line EL2-2 and the (2-3)th extension line EL2-3 through the contact hole CH'.

[0216] Therefore, each of the second extension lines EL2 arranged in the first non-folding portion NFP1 can be connected to a pair of related (or corresponding) second bridge lines BL2 through a pair of related third bridge lines BL3 and a pair of related (2-2) pattern portions PP2-2. According to this connection, the second extension line EL2, the third bridge line BL3, the (2-2) pattern portion PP2-2, the second bridge line BL2 and the (2-3) line L2-3 can be connected to form a loop form.

[0217] The third connection lines CL3 may be disposed in the inactive area NAA and extend in the first direction DR1. The third connection lines CL3 may be disposed in the inactive area NAA at the left and right sides.

[0218] The third connection line CL3 disposed in the inactive area NAA at the right side may be connected to the second connection line CL2 and the (2-1)th line L2-1 disposed in the second non-folding portion NFP2 through the contact hole CH'. The third connection line CL3 disposed in the inactive area NAA at the left side may be connected to the second connection line CL2 disposed in the first non-folding portion NFP1 through the contact hole CH'.

[0219] According to the above structure, the second sensing coil CF may extend from the connector CNT to have a coil shape.

[0220] According to an embodiment of the present disclosure, the second sensing coil CF may be defined as a driving coil, and the first sensing coil RF may be defined as a sensing coil, but the present disclosure is not limited thereto, and conversely, the first sensing coil RF may be defined as a driving coil, and the second sensing coil CF may be defined as a sensing coil. When current flows through the second sensing coil CF, magnetic field lines may be induced between the second sensing coil CF and the first sensing coil RF. The first sensing coil RF may sense the induced electromagnetic force applied from the electromagnetic pen, and output it to one terminal of each of the first sensing coils RF while using the electromagnetic force as a sensing signal.

[0221] Fig.14 yes Fig.12 An enlarged view of a portion of the folded portion shown in FIG.

[0222] refer to Fig.14 In an embodiment, the openings OP may include a first opening OP1 arranged in a kth row and a second opening OP2 arranged in a (k+1)th row. Here, "k" is a natural number greater than 0. The first opening OP1 and the second opening OP2 may be disposed to be offset from each other. The row may correspond to the second direction DR2.

[0223] In an embodiment, for example, the number of the first openings OP1 may be smaller than the number of the second openings OP2 based on the second direction DR2 , but embodiments of the present disclosure are not limited thereto.

[0224] The first extension line EL1 may extend through the first opening OP1 and the second opening OP2. The first extension line EL1 may extend along edges of the first opening OP1 and the second opening OP2.

[0225] The first extension line EL1 may be bent and extended to have a shape corresponding to the edges of the first and second openings OP1 and OP2. In an embodiment, for example, the first pattern portion PP1 may be bent and extended between the first and second openings OP1 and OP2 to have a shape corresponding to the edges of the first and second openings OP1 and OP2.

[0226] The first extension line EL1 may extend along the upper and lower edges UE1 and LE1 to be adjacent to each of the first openings OP1. In addition, the first extension line EL1 may extend along the upper and lower edges UE2 and LE2 to be adjacent to each of the second openings OP2.

[0227] According to an embodiment of the present disclosure, when viewed from a plan view, each of the upper edges UE1 and UE2 may be defined as an edge of each portion of the opening OP formed above the center of each of the openings OP based on the first direction DR1. In addition, when viewed from a plane, each of the lower edges LE1 and LE2 may be defined as an edge of each portion of the opening OP formed below the center of each of the openings OP based on the first direction DR1.

[0228] In the first extension lines EL1, each pair of first extension lines EL1 adjacent to each other may be defined as a first first extension line (hereinafter, to be referred to as the "(1-1)th extension line") EL1-1 and a second first extension line (hereinafter, to be referred to as the "(1-2)th extension line") EL1-2. The (1-1)th extension line EL1-1 of each pair of first extension lines EL1 may extend along an upper edge UE1 of each of the first openings OP1 and an upper edge UE2 of each of the second openings OP2 in the folding portion FP. The (1-2)th extension line EL1-2 of each pair of first extension lines EL1 may extend along a lower edge LE1 of each of the first openings OP1 and a lower edge LE2 of each of the second openings OP2 in the folding portion FP.

[0229] Therefore, the first pattern portion PP1 may extend along the upper edge UE1 and the lower edge LE1 to be adjacent to the upper edge UE1 and the lower edge LE1 of each of the first openings OP1. In addition, the first pattern portion PP1 may extend along the upper edge UE2 and the lower edge LE2 to be adjacent to the upper edge UE2 and the lower edge LE2 of each of the second openings OP2.

[0230] Fig.15 yes Fig.14 An enlarged view of some of the first extension lines shown in .

[0231] refer to Fig.15 , the width of each of the first extension lines EX1 may be greater than the width of each of the first pattern portions PP1 disposed in the curved surface portion CSP. Since the area between the openings OP is limited, the width of the first extension line EL1 may be reduced between the openings OP so that the first extension line EL1 passes through the openings OP.

[0232] Fig.16 It shows that Fig.14 Add the first pattern part shown in Fig.13 A view of the second pattern portion shown in FIG.

[0233] In particular, Fig.16 In FIG. 8 , the second pattern portion PP2 is shown by a dotted line.

[0234] refer to Fig.16In an embodiment, the second pattern portion PP2 may extend along the upper edge UE2 and the lower edge LE2 of each of the second openings OP2 while being adjacent to the upper edge UE2 and the lower edge LE2. The second pattern portion PP2 may not extend along the upper edge UE1 and the lower edge LE1 of the first opening OP1. In other words, the second pattern portion PP2 may not be disposed around the upper edge UE1 and the lower edge LE1 of the first opening OP1.

[0235] The second pattern portion PP2 may not be disposed under the first pattern portion PP1 extending along the edge of the first opening OP1 in the first pattern portion PP1. The second pattern portion PP2 may be disposed under the first pattern portion PP1 extending along the edge of the second opening OP2 in the first pattern portion PP1.

[0236] exist Fig.16 , the second pattern portion PP2 is shown to be spaced apart from the first pattern portion PP1 to distinguish the second pattern portion PP2 from the first pattern portion PP1. However, in an embodiment, when viewed in a plan view, the second pattern portion PP2 may be arranged to overlap the first pattern portion PP1 extending along an edge of the second opening OP2.

[0237] Fig.17 yes Fig. 9 A cross-sectional view of the digitizer shown in FIG. Fig.18 is a cross-sectional view of a digitizer according to a comparative embodiment.

[0238] Fig.17 and Fig.18 The first sensing coil RF, the (2-2) pattern portion PP2-2, the second bridge line BL2 and the third bridge line BL3 shown in FIG. Fig.12 The first sensing coil RF shown in Fig.13 The (2-2)th pattern portion PP2-2, the second bridge line BL2, and the third bridge line BL3 shown in FIG. 1 are the same. Therefore, any repeated detailed description thereof will be omitted or briefly described.

[0239] refer to Fig.17 , an embodiment of the digitizer DGT may include a first support layer GF1, a second support layer GF2, a third support layer GF3, and a fourth support layer GF4 stacked on each other from top to bottom. In an embodiment, for example, the digitizer DGT may include Fig.17 The four supporting layers GF1 to GF4 are shown in FIG. 1 , but the present disclosure is not limited thereto.

[0240] In an embodiment, for example, the first to fourth supporting layers GF1 to GF4 may have the same thickness as each other. However, the present disclosure is not limited thereto, and at least two of the first to fourth supporting layers GF1 to GF4 may have different thicknesses from each other.

[0241] In an embodiment, for example, the first to fourth supporting layers GF1 to GF4 may include glass fiber reinforced plastic (GFRP). However, the present disclosure is not limited thereto. In an embodiment, for example, the first to fourth supporting layers GF1 to GF4 may include carbon fiber reinforced plastic (CFRP) or aramid fiber reinforced plastic (AFRP).

[0242] The first extension line EL1 may be disposed under the first support layer GF1. The second support layer GF2 may be disposed under the first extension line EL1. The first extension line EL1 may be disposed on a top surface of the second support layer GF2.

[0243] The first connection line CL1 may be disposed under the second support layer GF2. The third support layer GF3 may be disposed under the first connection line CL1. In other words, the first connection line CL1 may be interposed between the second support layer GF2 and the third support layer GF3.

[0244] The first connection line CL1 may be connected to the first extension line EL1 through a contact hole CH defined by the second support layer GF2 .

[0245] The (2-2)th pattern portion PP2-2 may be disposed under the second support layer GF2. The (2-2)th pattern portion PP2-2 may be disposed on the third support layer GF3. In other words, the (2-2)th pattern portion PP2-2 may be interposed between the second support layer GF2 and the third support layer GF3.

[0246] The second bridge wire BL2 and the third bridge wire BL3 may be disposed below the third support layer GF3. The second bridge wire BL2 and the third bridge wire BL3 may be disposed on the bottom surface of the third support layer GF3. The second bridge wire BL2 and the third bridge wire BL3 may be disposed on the fourth support layer GF4. The fourth support layer GF4 may be disposed below the second bridge wire BL2 and the third bridge wire BL3. In other words, the second bridge wire BL2 and the third bridge wire BL3 may be interposed between the third support layer GF3 and the fourth support layer GF4.

[0247] Each of the second and third bridge lines BL2 and BL3 may be connected to the (2-2)th pattern portion PP2-2 through a corresponding contact hole CH' among contact holes CH' defined by the third support layer GF3.

[0248] The digitizer DGT may further include a first compensation layer CV1 and a second compensation layer CV2. The first compensation layer CV1 may be disposed below the first support layer GF1. The first compensation layer CV1 may be disposed on the second support layer GF2. The first compensation layer CV1 may be disposed on the first extension line EL1. The first compensation layer CV1 may be disposed on the second support layer GF2 to cover the first extension line EL1.

[0249] The first compensation layer CV1 may have a flat top surface. The first supporting layer GF1 may be disposed on the flat top surface of the first compensation layer CV1. The top surface of the first compensation layer CV1 may be defined as a surface opposite to the bottom surface covering the first extension line EL1 in the third direction DR3. The bottom surface of the first compensation layer CV1 may be defined as a first first surface (hereinafter, to be referred to as the "(1-1)th surface") FL1-1. The top surface of the first compensation layer CV1 may be defined as a second first surface (hereinafter, to be referred to as the "(1-2)th surface") FL1-2.

[0250] The second compensation layer CV2 may be disposed under the third supporting layer GF3. The second compensation layer CV2 may be disposed on the fourth supporting layer GF4. The second compensation layer CV2 may be disposed on the bottom surface of the third supporting layer GF3 to cover the second bridge line BL2 and the third bridge line BL3.

[0251] The second compensation layer CV2 may have a flat bottom surface. The fourth supporting layer GF4 may be disposed on the flat bottom surface of the second compensation layer CV2. The shape of the bottom surface of the second compensation layer CV2 may be symmetrical with the shape of the top surface of the first compensation layer CV1 in the third direction DR3. The bottom surface of the second compensation layer CV2 may be defined as a surface opposite to the top surface covering the second bridge line BL2 and the third bridge line BL3 in the third direction DR3. Hereinafter, the top surface of the second compensation layer CV2 may be defined as a first second surface (hereinafter, to be referred to as the "(2-1) surface") FL2-1, and the bottom surface of the second compensation layer CV2 may be defined as a second second surface (hereinafter, to be referred to as the "(2-2) surface") FL2-2.

[0252] The first compensation layer CV1 and the second compensation layer CV2 may have a thickness in a range of about 25 micrometers (μm) to about 74 μm. In an embodiment, for example, the first compensation layer CV1 and the second compensation layer CV2 may have the same thickness as each other. However, the present disclosure is not limited thereto. Fig.19 A difference between the thickness of the first compensation layer CV1 and the thickness of the second compensation layer CV2 is described in detail.

[0253] refer to Fig.18In a process of manufacturing a digitizer DGT' in which the first compensation layer CV1 and the second compensation layer CV2 are not provided, after the first extension line EL1 is provided on the second support layer GF2', the first support layer GF1' may be deposited. In this case, due to the first extension line EL1, the first support layer GF1' may not have a flat top surface. In detail, the top surface of the portion of the first support layer GF1' overlapping with the first extension line EL1 and the top surface of the portion of the first support layer GF1' not overlapping with the first extension line EL1 may be stepped with each other. In addition, due to the second bridge wire BL2 and the third bridge wire BL3, the bottom surface of the fourth support layer GF4' covering the second bridge wire BL2 and the third bridge wire BL3 in the third support layer GF3' may not be flat.

[0254] Therefore, the display module DM (see Figure 7 ) and the top surface of the window module WM (see Figure 7 ) may not be flat. Figure 1 )’s surface quality may deteriorate.

[0255] In the embodiments of the present disclosure, reference Fig.17 , the first compensation layer CV1 may cover the first extension line EL1 and provide a flat top surface. The first support layer GF1 may be disposed on the flat top surface of the first compensation layer CV1. Therefore, since the first support layer GF1 has a flat top surface, the digitizer DGT may have a flat top surface. The display module DM (see Figure 7 ) may have a flat top surface, and the window module WM may have a flat top surface. Therefore, the display device DD (see Figure 1 ) surface quality.

[0256] In such an embodiment, since the second compensation layer CV2 is provided, the first to fourth supporting layers GF1 to GF4, the first compensation layer CV1 and the second compensation layer CV2 can be symmetrical with each other about an axis parallel to the second direction DR2 while passing through the center of the (2-2)th pattern portion PP2-2. Therefore, the phenomenon that the first to fourth supporting layers GF1 to GF4, the first sensing coil RF, the bridge line BL and the second sensing coil CF are curled can be effectively prevented. Therefore, the display device DD (see Figure 1 ) reliability.

[0257] The first compensation layer CV1 and the second compensation layer CV2 may include epoxy resin. In an embodiment, for example, the first compensation layer CV1 and the second compensation layer CV2 may be a compound having heat resistance at 150 to 250 degrees. In addition, the shapes of the first compensation layer CV1 and the second compensation layer CV2 may be modified by applying a pressure of 5 to 100 Bar to the first compensation layer CV1 and the second compensation layer CV2 to cover the first extension line EL1, the second bridge line BL2, and the third bridge line BL3.

[0258] Fig.19 is a view showing a digitizer according to another embodiment of the present disclosure.

[0259] Fig.19 The first to fourth supporting layers GF1 to GF4, the first sensing coil RF, the (2-2)th pattern portion PP2-2, the second bridge line BL2 and the third bridge line BL3 and Fig.17 The first to fourth supporting layers GF1 to GF4, the first sensing coil RF, the (2-2)th pattern portion PP2-2, the second bridge line BL2, and the third bridge line BL3 are the same, and thus any repeated detailed descriptions thereof will be omitted or simplified to avoid redundancy.

[0260] In an embodiment, the digitizer DGTa may include a first compensation layer CV1a and a second compensation layer CV2a. The first compensation layer CV1a may be disposed on the top surface of the second support layer GF2 to cover the first extension line EL1. The second compensation layer CV2a may be disposed on the bottom surface of the third support layer GF3 to cover the second bridge line BL2 and the third bridge line BL3.

[0261] Therefore, since the first support layer GF1 is disposed on the flat top surface of the first compensation layer CV1a and the fourth support layer GF4 is disposed on the flat bottom surface of the second compensation layer CV2a, the digitizer DGTa may have flat top and bottom surfaces. Figure 1 ) surface quality.

[0262] Each of the first compensation layer CV1a and the second compensation layer CV2a may have a thickness in the range of about 25 μm to about 74 μm. In an embodiment, the thickness of the first compensation layer CV1a may be different from the thickness of the second compensation layer CV2a.

[0263] In an embodiment, for example, a first thickness t1 defined by the thickness of the first compensation layer CV1a may be greater than a second thickness t2 defined by the thickness of the second compensation layer CV2a. In such an embodiment, a relative deviation between the first thickness t1 of the first compensation layer CV1a and the second thickness t2 of the second compensation layer CV2a (i.e., a ratio of a difference between the first thickness t1 and the second thickness t2 relative to an average value of the first thickness t1 and the second thickness t2) may be in a range of about 1% to about 10%. In such an embodiment in which the relative deviation between the thickness of the first compensation layer CV1a and the thickness of the second compensation layer CV2a is in a range of about 1% to about 10%, even if the thickness of the first compensation layer CV1a is different from the thickness of the second compensation layer CV2a, a curling phenomenon may not occur.

[0264] Fig.19 An embodiment in which the first thickness t1 of the first compensation layer CV1a is greater than the second thickness t2 of the second compensation layer CV2a is shown, but the disclosure is not limited thereto. In an embodiment, for example, the second thickness t2 of the second compensation layer CV2a may be greater than the first thickness t1 of the first compensation layer CV1a.

[0265] Fig. 20 is a view showing a digitizer according to another embodiment of the present disclosure.

[0266] Fig. 20 The first compensation layer CV1, the second compensation layer CV2, the first to fourth support layers GF1 to GF4, the first sensing coil RF, the (2-2)th pattern portion PP2-2, the second bridge line BL2 and the third bridge line BL3 may be connected to Fig.17 The first compensation layer CV1, the second compensation layer CV2, the first to fourth supporting layers GF1 to GF4, the first sensing coil RF, the (2-2)th pattern portion PP2-2, the second bridge line BL2 and the third bridge line BL3 are the same, and therefore any repeated detailed descriptions thereof will be omitted or simplified to avoid redundancy.

[0267] refer to Fig. 20 In an embodiment, the digitizer DGTb may further include a third compensation layer CV3. The third compensation layer CV3 may be interposed between the second support layer GF2 and the third support layer GF3. The third compensation layer CV3 may be disposed on the third support layer GF3 to cover the first connection line CL1 and the (2-2)th pattern portion PP2-2. The third compensation layer CV3 may have a flat top surface. The second support layer GF2 may be disposed on the flat top surface of the third compensation layer CV3.

[0268] In an embodiment, for example, the first compensation layer CV1, the second compensation layer CV2, and the third compensation layer CV3 may have the same thickness as each other. However, the present disclosure is not limited thereto, and the thickness of at least one selected from the first compensation layer CV1, the second compensation layer CV2, and the third compensation layer CV3 may be different from the thickness of the remaining compensation layers.

[0269] As above reference Fig.18 As described, the top or bottom surfaces of the first to fourth supporting layers GF1 to GF4 may not be flat due to the first sensing coil RF, the (2-2)th pattern portion PP2-2, the second and third bridge lines BL2 and BL3.

[0270] In an embodiment of the present disclosure, the first supporting layer GF1 according to an embodiment of the present disclosure may be disposed on a flat top surface of the first compensation layer CV1, the second supporting layer GF2 may be disposed on a flat top surface of the third compensation layer CV3, and the fourth supporting layer GF4 may be disposed on a flat bottom surface of the second compensation layer CV2.

[0271] Therefore, in such an embodiment, the top and bottom surfaces of the digitizer DGTb may be flat, and the display module DM (see FIG. 2 ) disposed on the digitizer DGTb may be flat. Figure 7 ) and the window module WM (see Figure 7 ) can also be flat. Therefore, the display device DD (see Figure 1 ) surface quality.

[0272] Fig. 20 An embodiment including three compensation layers CV1, CV2, and CV3 is shown, but the present disclosure is not limited thereto. In an embodiment, for example, the digitizer DGTb may include at least two or four or more compensation layers.

[0273] According to an embodiment of the present disclosure, the digitizer may include a first compensation layer for covering the first sensing coil, a second compensation layer for covering the bridge wire, and a plurality of supporting layers arranged on the top surface of the first compensation layer and the bottom surface of the second compensation layer. The supporting layer may be arranged on the flat top surface of the first compensation layer. The supporting layer may be arranged on the flat bottom surface of the second compensation layer. The supporting layer may be arranged on the flat top surface of the first compensation layer and the flat bottom surface of the second compensation layer, so that the surface quality of the display device can be improved. In such an embodiment, the supporting layer, the first compensation layer, and the second compensation layer may be arranged symmetrically with each other. Therefore, the supporting layer and the first compensation layer and the second compensation layer may be effectively prevented from curling to improve the reliability of the display device.

[0274] The utility model should not be interpreted as being limited to the embodiments described herein. Instead, these embodiments are provided so that the present disclosure will be thorough and complete, and the concept of the utility model will be fully conveyed to those skilled in the art.

[0275] While the present invention has been particularly shown and described with reference to embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit or scope of the present invention as defined by the appended claims.

Claims

1. A display device, characterized in that: The display device comprises: A display panel comprising a first non-folding area, a second non-folding area, and a folding area interposed between the first non-folding area and the second non-folding area; and a digitizer, disposed below the display panel and divided into an active area and a passive area surrounding the active area, Wherein, the digitizer comprises: A first sensing coil is disposed in the active area; a first compensation layer, disposed on the first sensing coil to cover the first sensing coil; a second sensing coil, disposed below the first sensing coil in the active region; a bridge wire, disposed below the second sensing coil; and A second compensation layer is disposed under the bridge line to cover the bridge line, wherein a surface of the first compensation layer opposite to a surface of the first compensation layer covering the first sensing coil is flat.

2. The display device according to claim 1, characterized in that A surface of the second compensation layer opposite to a surface of the second compensation layer covering the bridge line is flat.

3. The display device according to claim 2, characterized in that: Each of the first compensation layer and the second compensation layer has a thickness in the range of 25 μm to 74 μm.

4. The display device according to claim 3, characterized in that: The thickness of the first compensation layer is equal to the thickness of the second compensation layer.

5. The display device according to claim 3, characterized in that: A relative deviation between the thickness of the first compensation layer and the thickness of the second compensation layer is in the range of 1% to 10%.

6. The display device according to claim 2, characterized in that: The display device further includes: A third compensation layer is interposed between the first compensation layer and the second compensation layer to cover the second sensing coil.

7. The display device according to claim 6, characterized in that: The thickness of the first compensation layer, the thickness of the second compensation layer, and the thickness of the third compensation layer are equal to each other.

8. The display device according to claim 6, characterized in that: One of the thickness of the first compensation layer, the thickness of the second compensation layer, and the thickness of the third compensation layer is different from another of the thickness of the first compensation layer, the thickness of the second compensation layer, and the thickness of the third compensation layer.

9. The display device according to claim 1, characterized in that: The digitizer also includes: a first supporting layer, a second supporting layer, a third supporting layer, and a fourth supporting layer stacked on each other in sequence, and wherein the first supporting layer is arranged on the first compensation layer, The second supporting layer is interposed between the first sensing coil and the second sensing coil, The third supporting layer is interposed between the second sensing coil and the bridge wire, and The fourth supporting layer is disposed below the second compensation layer, and Wherein, the thickness of the first supporting layer, the thickness of the second supporting layer, the thickness of the third supporting layer and the thickness of the fourth supporting layer are equal to each other.

10. The display device according to claim 1, characterized in that: The folding region is foldable about a folding axis parallel to the first direction, wherein a plurality of openings are defined in a portion of the digitizer that overlaps the folding region when viewed in plan, and wherein the plurality of openings are arranged in the first direction and in a second direction intersecting the first direction, and openings arranged in the hth column among the plurality of openings are arranged to be offset relative to openings arranged in the (h+1)th column among the plurality of openings, wherein the column corresponds to the first direction and "h" is a natural number greater than 0.

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