Display device and method of manufacturing the same

Abstract

A display device and a method for manufacturing the same are provided. The display device includes: a display panel; a first force sensor disposed below the display panel; a display circuit board attached to a first side of the display panel; and a first flexible circuit board connecting the first force sensor and the display circuit board, wherein the display circuit board and the first flexible circuit board are bent at least once.

Description

Technical Field

[0001] Exemplary embodiments of the invention generally relate to a display device and a method of manufacturing the display device. Background Art

[0002] Electronic devices can provide images to users. Such devices include smartphones, tablet personal computers (PCs), digital cameras, notebook computers, navigation devices, and smart televisions (TVs). Display devices include display panels that generate and display images and various input devices.

[0003] In recent years, touch panels capable of detecting touch input have become widely used in electronic devices, primarily in smartphones and tablet PCs. Due to their ease of use, touch panels are increasingly replacing existing physical input devices such as keypads. Research has been underway to implement force sensors as input devices by integrating them into display devices.

[0004] The above information disclosed in this Background section is only for understanding the background of the inventive concept and therefore it may contain information that does not constitute the prior art. Summary of the Invention

[0005] The device constructed according to the exemplary embodiment of the invention provides a display device in which a force sensor can be implemented as an input device. In addition, according to the exemplary embodiment of the invention, a method of manufacturing a display device in which a force sensor can be implemented as an input device is provided.

[0006] Additional features of the inventive concepts will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the inventive concepts.

[0007] According to one or more embodiments of the invention, a display device includes: a display panel; a first force sensor disposed below the display panel; a display circuit board attached to a first side of the display panel; and a first flexible circuit board connecting the first force sensor and the display circuit board, wherein the display circuit board and the first flexible circuit board are bent at least once.

[0008] The display device may further include a panel bottom member disposed below the display panel.

[0009] The first force sensor can be attached to the bottom surface of the panel bottom member, and the first flexible circuit board can be bent toward the bottom of the panel bottom member, the first flexible circuit board including: a first end of the first flexible circuit board, attached to the first pad unit of the first force sensor; and a second end of the first flexible circuit board, arranged under the panel bottom member.

[0010] The first pad unit of the first force sensor may be provided at one end of the first force sensor in a longitudinal direction of the first force sensor.

[0011] The first flexible circuit board may extend from the first pad unit of the first force sensor in a first direction, and the first flexible circuit board may be bent in a second direction crossing the first direction.

[0012] The display circuit board may be bent toward a bottom side of the panel bottom member, the display circuit board including: a first side of the display circuit board attached to one surface of the display panel; and a second side of the display circuit board disposed below the panel bottom member.

[0013] The display device may further include: a second force sensor disposed below the display panel; and a second flexible circuit board connecting the second force sensor and the display circuit board, wherein the second flexible circuit board can be bent at least once.

[0014] The display device may further include a panel bottom member disposed below the display panel.

[0015] The second force sensor can be attached to the bottom surface of the panel bottom member, and the second flexible circuit board can be bent toward the bottom of the panel bottom member, the second flexible circuit board including: a first end of the second flexible circuit board, attached to the second pad unit of the second force sensor; and a second end of the second flexible circuit board, arranged under the panel bottom member.

[0016] The second pad unit of the second force sensor may be provided at one end of the second force sensor in a longitudinal direction of the second force sensor.

[0017] The second flexible circuit board may extend from the second pad unit of the second force sensor in a first direction, and the second flexible circuit board may be bent in a second direction crossing the first direction.

[0018] The display circuit board includes: a first connector connected to a first connector connection portion of the first flexible circuit board, the first connector connection portion being arranged at the second end of the first flexible circuit board; and a second connector connected to a second connector connection portion of the second flexible circuit board, the second connector connection portion being arranged at the second end of the second flexible circuit board.

[0019] The first connector may be disposed adjacent to a first side of the display circuit board, and the second connector may be disposed adjacent to a second side of the display circuit board opposite the first side of the display circuit board.

[0020] The display circuit board may include: a first connector accommodating portion connected to a first connector connecting portion of a first flexible circuit board, the first connector connecting portion being arranged at a second end of the first flexible circuit board; and a second connector accommodating portion connected to a second connector connecting portion of a second flexible circuit board, the second connector connecting portion being arranged at a second end of the second flexible circuit board.

[0021] In a plan view, a first side of the display panel may be partially recessed, the display panel including a first protrusion and a second protrusion in which pixels are formed to display an image.

[0022] The display circuit board may be disposed on the first protrusion and the second protrusion.

[0023] The display panel may include: a first area having a flat planar surface; a second area extending from a first side of the first area, the second area being curved; and a third area extending from a second side of the first area opposite to the first side of the first area, the third area being curved; and the first force sensor and the second force sensor may be respectively disposed in the second area and the third area.

[0024] The first force sensor may include force sensor cells, each of the force sensor cells including a driving electrode and a sensing electrode disposed on a surface of a first substrate, and a force sensing layer disposed on a surface of a second substrate facing the first substrate.

[0025] The display device may further include a waterproof member disposed adjacent to the first force sensor and the second force sensor.

[0026] According to one or more embodiments of the invention, a method of manufacturing a display device includes: attaching a first force sensor to one edge on a bottom surface of a heat sink; attaching the heat sink to the bottom surface of a display panel by lamination using a roller; attaching a first flexible circuit board to a pad unit of the first force sensor; attaching a display circuit board to one side of the display panel; connecting the first flexible circuit board to a first connector of the display circuit board; and fixing the display circuit board and the first flexible circuit board by bending the display circuit board and the first flexible circuit board toward the bottom side of the display panel.

[0027] The display panel may include a first region having a flat planar surface and a second region extending from one side of the first region, the second region being curved, and the first force sensor may be disposed in the second region.

[0028] The attaching of the heat sink may include placing a roller in the first region of the display panel and on a bottom surface of the heat sink, and pressurizing the heat sink with the roller.

[0029] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings illustrate exemplary embodiments of the invention and together with the description serve to explain the inventive concept. The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification.

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

[0032] Figure 2 yes Figure 1 An exploded perspective view of a display device.

[0033] Figure 3 It shows that Figure 2 A bottom view of an exemplary embodiment of a display panel attached to a cover window before a display circuit board, a first flexible circuit board, and a second flexible circuit board are bent downward.

[0034] Figure 4 Is making Figure 2 A bottom view of the display panel attached to the cover window after the display circuit board, the first flexible circuit board, and the second flexible circuit board are bent downward.

[0035] Figure 5 It shows Figure 2 The floor plan of the framework.

[0036] Figure 6 It shows Figure 2 A plan view of the main circuit board.

[0037] Figure 7 It is along Figure 3 and Figure 4 A sectional view taken along section line II'.

[0038] Figure 8 is a cross-sectional view showing a display area of ​​a display panel.

[0039] Figure 9 is a plan view illustrating a first force sensor and a first bump of a display device constructed according to an exemplary embodiment.

[0040] Figure 10 It shows Figure 9 A plan view of area A.

[0041] Figure 11 It is along Figure 10 A sectional view taken along section line II-II'.

[0042] Figure 12 is a graph showing a change in resistance of a sensing line according to the force of a force sensing layer.

[0043] Figure 13 and Figure 14 is a perspective view illustrating an exemplary concept of using a first force sensor and a second force sensor of a display device constructed according to an exemplary embodiment as physical buttons.

[0044] Figure 15 It shows that Figure 2 A bottom view of another exemplary embodiment of a display panel attached to a cover window before a display circuit board, a first flexible circuit board, and a second flexible circuit board are bent downward.

[0045] Figure 16 It shows that Figure 2 A bottom view of another exemplary embodiment of a display panel attached to a cover window after a display circuit board, a first flexible circuit board, and a second flexible circuit board are bent downward.

[0046] Figure 17 It shows that Figure 2 A bottom view of another exemplary embodiment of a display panel attached to a cover window before a display circuit board, a first flexible circuit board, and a second flexible circuit board are bent downward.

[0047] Figure 18 It shows that Figure 2 A bottom view of another exemplary embodiment of a display panel attached to a cover window after a display circuit board, a first flexible circuit board, and a second flexible circuit board are bent downward.

[0048] Figure 19 It shows Figure 17 and Figure 18 A plan view of the display panel.

[0049] Figure 20 It shows that Figure 2 A bottom view of another exemplary embodiment of a display panel attached to a cover window before a display circuit board, a first flexible circuit board, and a second flexible circuit board are bent downward.

[0050] Figure 21 It shows that Figure 2 A bottom view of another exemplary embodiment of a display panel attached to a cover window after a display circuit board, a first flexible circuit board, and a second flexible circuit board are bent downward.

[0051] Figure 22 is a flowchart illustrating a method of manufacturing a display device constructed according to an exemplary embodiment.

[0052] Figure 23A 、 Figure 23B 、 Figure 23C 、 Figure 23D and Figure 23E is a perspective view illustrating a method of manufacturing a display device constructed according to an exemplary embodiment. DETAILED DESCRIPTION

[0053] In the following description, for the purpose of explanation, many specific details are set forth to provide a thorough understanding of the various exemplary embodiments or implementations of the invention. As used herein, "embodiment" and "implementation" are interchangeable words that are non-limiting examples of devices or methods that employ one or more inventive concepts disclosed herein. However, it is apparent that the various exemplary embodiments can be implemented without these specific details or with one or more equivalent arrangements. In other cases, in order to avoid making the various exemplary embodiments unnecessarily vague, well-known structures and devices are shown in block diagram form. In addition, the various exemplary embodiments may be different, but do not have to be exclusive. For example, without departing from the inventive concept, the specific shape, construction and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0054] Unless otherwise specified, the exemplary embodiments shown will be understood as providing exemplary features of different details of some ways in which the inventive concept can be implemented in practice. Therefore, unless otherwise specified, the features, components, modules, layers, films, panels, regions and / or aspects of the various embodiments (hereinafter individually or collectively referred to as "elements" or "elements") can be further combined, separated, interchanged and / or rearranged without departing from the inventive concept.

[0055] The use of cross hatching and / or shading in the drawings is generally provided to make the boundaries between adjacent elements clear. As such, unless otherwise specified, the presence or absence of cross hatching or shading does not convey or indicate any preference or need for the specific materials, material properties, dimensions, proportions, commonalities between the elements shown, and / or any other characteristics, attributes, properties, etc. of the elements. In addition, in the drawings, the sizes and relative sizes of the elements may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, a specific process sequence can be performed differently from the described sequence. For example, two continuously described processes can be performed substantially simultaneously or in an order opposite to the described sequence. In addition, the same reference numerals represent the same elements.

[0056] When an element or layer is referred to as being "on" another element or layer, "connected to" or "bound to" another element or layer, the element or layer may be directly on, directly connected to or directly bound to the other element or layer, or there may be an intermediate element or intermediate layer. However, when an element or layer is referred to as being "directly on" another element or layer, "directly connected to" or "directly bound to" another element or layer, there are no intermediate elements or intermediate layers. For this reason, the term "connected" may refer to a physical connection, an electrical connection and / or a fluid connection with or without an intermediate element. In addition, the X-axis, Y-axis and Z-axis are not limited to axes of a rectangular coordinate system (such as the X-axis, Y-axis and Z-axis) and may be interpreted in a broader sense. For example, the X-axis, Y-axis and Z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purposes of this disclosure, “at least one of X, Y, and Z” and “at least one selected from the group consisting of X, Y, and Z” may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as XYZ, XYY, YZ, and ZZ for example. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0057] Although the terms "first," "second," etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. Thus, a first element discussed below could be named a second element without departing from the teachings of the disclosure.

[0058] For descriptive purposes, spatially relative terms such as "under," "beneath," "beneath," "below," "above," "upper," "above," "higher," and "side" (e.g., as in "sidewall") may be used herein to describe the relationship of one element to another(s) element(s) as shown in the accompanying drawings. In addition to including the orientations depicted in the accompanying drawings, the spatially relative terms are intended to include different orientations of the device in use, operation, and / or manufacture. For example, if the device in the drawings is turned over, elements or features described as being "under" or "beneath" other elements or features would then be positioned "above" the other elements or features. Thus, the exemplary term "under" can include both above and below orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations), with the spatially relative descriptors used herein interpreted accordingly.

[0059] The terms used herein are for the purpose of describing specific embodiments, and are not intended to be limiting. As used herein, unless context clearly indicates otherwise, the singular "one (kind / person)" and "described (the)" are also intended to include plural forms. In addition, when using the terms "comprising" and / or "including" and their variations in this manual, it is explained that there are stated features, integral bodies, steps, operations, elements, components and / or their groups, but does not exclude the existence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or their groups. It is also noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms rather than as degree terms, and are so used to explain the measured values, calculated values ​​and / or the inherent deviation of the values ​​that will be recognized by those of ordinary skill in the art.

[0060] The shape of the regions of the device are therefore not necessarily intended to be limiting.

[0061] As is customary in the art, some exemplary embodiments are described and shown in the accompanying drawings using functional blocks, units and / or modules. It will be understood by those skilled in the art that these blocks, units and / or modules are physically implemented by electronic (or optical) circuits, discrete components, microprocessors, hard-wired circuits, storage elements, wiring connections, etc., such as logic circuits, which can be formed using semiconductor-based manufacturing techniques or other manufacturing techniques. In the case where blocks, units and / or modules are implemented by microprocessors or other similar hardware, they can be programmed and controlled using software (e.g., microcode) to perform the various functions discussed herein, and they can be optionally driven by firmware and / or software. It is also contemplated that each block, unit and / or module can be implemented by dedicated hardware, or implemented as a combination of dedicated hardware that performs some functions and a processor (e.g., one or more programmed microprocessors and associated circuits) that performs other functions. In addition, without departing from the scope of the inventive concept, each block, unit and / or module of some exemplary embodiments can be physically separated into two or more interactive and discrete blocks, units and / or modules. Furthermore, the blocks, units and / or modules of some exemplary embodiments may be physically combined into more complex blocks, units and / or modules without departing from the scope of the inventive concept.

[0062] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure is a part. Unless otherwise clearly defined herein, terms (such as those defined in common dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense.

[0063] Figure 1 is a perspective view of a display device constructed according to an exemplary embodiment of the present disclosure. Figure 2 yes Figure 1 An exploded perspective view of a display device.

[0064] Reference Figure 1 and Figure 2 The display device 10 includes a cover window 100, a touch sensing device 200, a touch circuit board 210, a touch driving unit 220, a display panel 300, a display circuit board 310, a display driving unit 320, a force sensing unit 330, a first force sensor 510, a second force sensor 520, a frame 600, a main circuit board 700 and a lower cover 900.

[0065] As used herein, the terms "above," "top," and "top surface" refer to the direction in which the cover window 100 is disposed relative to the display panel 300, that is, the Z-axis direction. The terms "below," "bottom," and "bottom surface" as used herein refer to the direction in which the frame 600 is disposed relative to the display panel 300, that is, the direction opposite to the Z-axis direction. Furthermore, the terms "left," "right," "up," and "down" as used herein refer to corresponding directions when viewed from above the display panel 300. For example, the term "left" refers to the direction opposite to the X-axis direction, the term "right" refers to the X-axis direction, the term "up" refers to the Y-axis direction, and the term "down" refers to the direction opposite to the Y-axis direction.

[0066] The display device 10 may have a rectangular shape in a plan view. For example, in a plan view, the display device 10 may have a rectangular shape having short sides extending in a first direction (or X-axis direction) and long sides extending in a second direction (or Y-axis direction). The corners where the short sides and the long sides meet may be rounded or right angles. The planar shape of the display device 10 is not particularly limited, and the display device 10 may be formed in various other shapes, such as a polygonal shape, a circular shape, or an elliptical shape in addition to a rectangular shape.

[0067] The display device 10 may include a flat first region DR1, a second region DR2 extending from the left side of the first region DR1, and a third region DR3 extending from the right side of the first region DR1. The second region DR2 and the third region DR3 may be flat or curved. When the second region DR2 and the third region DR3 are flat, the first region DR1 and the second and third regions DR2 and DR3 may form an obtuse angle with each other. When the second and third regions DR2 and DR3 are curved, the second and third regions DR2 and DR3 may have a predetermined curvature or a varying curvature. In this case, the first region DR1, the second region DR2, and the third region DR3 may be referred to as a flat portion, a first curved portion, and a second curved portion, respectively.

[0068] Figure 1 The second and third regions DR2 and DR3 are shown extending from the left and right sides of the first region DR1, respectively, but the present disclosure is not limited thereto. That is, one of the second and third regions DR2 and DR3 may not be provided. In addition to the second and third regions DR2 and DR3, a fourth region may be further provided extending from at least one of the upper and lower sides of the first region DR1.

[0069] The cover window 100 may be provided on the display panel 300 to cover the top surface of the display panel 300. Therefore, the cover window 100 may protect the top surface of the display panel 300. Figure 7 , the cover window 100 may be attached to the touch sensing device 200 via a first adhesive member 910. The first adhesive member 910 may be an optically clear adhesive (OCA) or an optically clear resin (OCR).

[0070] The cover window 100 may include a light-transmitting portion DA100 corresponding to the display panel 300 and a light-blocking portion NDA100 corresponding to the remaining portion of the display device 10. The cover window 100 may be provided in the first region DR1, the second region DR2, and the third region DR3. The light-transmitting portion DA100 may be provided in portions of the first region DR1, the second region DR2, and the third region DR3. The light-blocking portion NDA100 may be formed to be opaque. When the light-blocking portion NDA100 does not display an image, the light-blocking portion NDA100 may be formed as a decorative layer that the user can see. For example, a company logo such as SAMSUNG or a series of various characters or letters may be patterned into the light-blocking portion NDA100. In addition, a hole HH for exposing a front camera, a front speaker, an infrared (IR) sensor, an iris recognition sensor, an ultrasonic sensor, and an illumination sensor may be formed in the light-blocking portion NDA100, but the present disclosure is not limited thereto. For example, some or all of the front camera, the front speaker, the IR sensor, the iris recognition sensor, and the illumination sensor may be embedded in the display panel 300, in which case some or all of the hole HH may not be provided.

[0071] The cover window 100 may be formed of glass, sapphire, and / or plastic.The cover window 100 may be formed to be rigid or flexible.

[0072] The touch sensing device 200 may be disposed between the cover window 100 and the display panel 300. The touch sensing device 200 may be disposed in the first, second, and third regions DR1, DR2, and DR3. Therefore, a touch input from a user may be detected not only in the first region DR1 but also in the second and third regions DR2 and DR3.

[0073] like Figure 7 As shown in FIG, the touch sensing device 200 may be attached to the bottom surface of the cover window 100 via a first adhesive member 910. A polarizing film may be added to the top of the touch sensing device 200 to prevent or reduce degradation of visibility that may be caused by reflection of external light. In this case, the polarizing film may be attached to the bottom surface of the cover window 100 via the first adhesive member 910.

[0074] The touch sensing device 200, which is a device for detecting the position of a touch input from a user, can be implemented as a capacitance type such as a self-capacitance type or a mutual-capacitance type. When the touch sensing device 200 is implemented as a self-capacitance type, the touch sensing device 200 may include only touch drive electrodes. On the other hand, when the touch sensing device 200 is implemented as a mutual-capacitance type, the touch sensing device 200 may include touch drive electrodes and touch sensing electrodes. In the following description, it is assumed that the touch sensing device 200 is a mutual-capacitance type.

[0075] The touch sensing device 200 may be formed as a plate or a film. Figure 7 As shown in FIG, the touch sensing device 200 may be attached to the thin film encapsulation layer of the display panel 300 via a second adhesive member 920. The second adhesive member 920 may be an OCA or an OCR.

[0076] The touch sensing device 200 may be formed as a single body with the display panel 300. In this case, the touch driving electrodes and the touch sensing electrodes of the touch sensing device 200 may be formed on the thin film encapsulation layer of the display panel 300.

[0077] The touch circuit board 210 may be attached to one side of the touch sensing device 200. Specifically, one side of the touch circuit board 210 may be attached to pads (also called "pads") provided on one side of the touch sensing device 200 via an anisotropic conductive film. Figure 4 As shown in FIG, the touch connection portion may be provided at the other side of the touch circuit board 210 and may be connected to the touch connector 312a of the display circuit board 310. The touch circuit board 210 may be a flexible printed circuit board (FPCB).

[0078] The touch drive unit 220 can apply a touch drive signal to the touch drive electrodes of the touch sensing device 200, detect a sensing signal from the touch sensing electrodes of the touch sensing device 200, and calculate the position of a touch input from a user by analyzing the detected sensing signal. The touch drive unit 220 can be formed as an integrated circuit and can be mounted on the touch circuit board 210.

[0079] The display panel 300 may be disposed below the touch sensing device 200. The display panel 300 may be disposed so as to overlap the light-transmitting portion DA100 of the cover window 100. The display panel 300 may be disposed in the first, second, and third regions DR1, DR2, and DR3. As a result, an image from the display panel 300 may be viewed not only in the first region DR1 but also in the second and third regions DR2 and DR3.

[0080] The display panel 300 may be a light-emitting display panel including a light-emitting element. For example, the display panel 300 may be an OLED display panel using an organic light-emitting diode (OLED), an mLED display panel using a micro light-emitting diode (mLED), or a QLED display panel using a quantum dot light-emitting diode (QLED). In the following description, it is assumed that the display panel 300 is as follows. Figure 8 The OLED display panel shown in .

[0081] Reference Figure 8The display area of ​​the display panel 300 is an area in which the light emitting element layer 304 is formed and an image is displayed, and the non-display area of ​​the display panel 300 is an area located on the periphery of the display area.

[0082] The display panel 300 may include a supporting substrate 301 , a flexible substrate 302 , a thin film transistor (TFT) layer 303 , a light emitting element layer 304 , a thin film encapsulation layer 305 , and a barrier film 306 .

[0083] The flexible substrate 302 is disposed on the supporting substrate 301. The supporting substrate 301 and the flexible substrate 302 may include a flexible polymer material. For example, the supporting substrate 301 and the flexible substrate 302 may include polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl ester, polyimide (PI), polycarbonate (PC), cellulose triacetate (TAC), cellulose acetate propionate (CAP), or a combination thereof.

[0084] The TFT layer 303 is formed on the flexible substrate 302. The TFT layer 303 includes a TFT 335, a gate insulating film 336, an interlayer insulating film 337, a passivation film 338, and a planarization film 339.

[0085] A buffer film may be formed on the flexible substrate 302. The buffer film may be formed on the flexible substrate 302 to protect the TFT 335 and the light emitting element from moisture that may penetrate the supporting substrate 301 and the flexible substrate 302. The TFT 335 and the light emitting element are susceptible to moisture. The buffer film may be composed of a plurality of inorganic films stacked alternately. For example, the buffer film may be formed of a silicon oxide (SiO x ) film and silicon nitride (SiN x ) films are alternately stacked. The buffer film may not be provided.

[0086] The TFTs 335 are formed on the buffer film. Each TFT 335 includes an active layer 331, a gate electrode 332, a source electrode 333, and a drain electrode 334. Figure 8 The TFT 335 is shown as having a top-gate structure in which the gate electrode 332 is disposed above the active layer 331, but the present disclosure is not limited thereto. That is, the TFT 335 may have a bottom-gate structure in which the gate electrode 332 is disposed below the active layer 331 or a dual-gate structure in which the gate electrode 332 is disposed both above and below the active layer 331.

[0087] The active layer 331 is formed on the buffer film. The active layer 331 may be formed of a silicon-based semiconductor material or an oxide-based semiconductor material. A light shielding layer for blocking external light incident on the active layer 331 may be formed between the buffer film and the active layer 331.

[0088] The gate insulating film 336 may be formed on the active layer 331. The gate insulating film 336 may be formed as an inorganic film such as, for example, a silicon oxide film, a silicon nitride film, or a multilayer film thereof.

[0089] The gate electrode 332 and the gate line may be formed on the gate insulating film 336. The gate electrode 332 and the gate line may be formed as a single-layer film or a multi-layer film using molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), or an alloy thereof.

[0090] An interlayer insulating film 337 may be formed on the gate electrode 332 and the gate line. The interlayer insulating film 337 may be formed as an inorganic film such as, for example, a silicon oxide film, a silicon nitride film, or a multilayer film thereof.

[0091] The source electrode 333, the drain electrode 334, and the data line may be formed on the interlayer insulating film 337. The source electrode 333 and the drain electrode 334 may be connected to the active layer 331 through a contact hole penetrating the gate insulating film 336 and the interlayer insulating film 337. The source electrode 333, the drain electrode 334, and the data line may be formed as a single layer or a multilayer film using Mo, Al, Cr, Au, Ti, Ni, Nd, Cu, or alloys thereof.

[0092] A passivation film 338 may be formed on the source electrode 333, the drain electrode 334, and the data line to insulate the TFT 335. The passivation film 338 may be formed as an inorganic film such as, for example, a silicon oxide film, a silicon nitride film, or a multilayer film thereof.

[0093] A planarization film 339 may be formed on the passivation film 338 to planarize a height difference formed by the TFT 335. The planarization film 339 may be formed as an organic film using acrylic resin, epoxy resin, phenol resin, polyamide resin, or polyimide resin.

[0094] The light emitting element layer 304 is formed on the TFT layer 303. The light emitting element layer 304 includes a light emitting element and a pixel defining film 344.

[0095] The light emitting elements and the pixel definition film 344 are formed on the planarization film 339. The light emitting elements may be OLEDs. In this case, each light emitting element may include an anode electrode 341, a light emitting layer 342, and a cathode electrode 343.

[0096] The anode electrode 341 may be formed on the planarization film 339. The anode electrode 341 may be connected to the drain electrode 334 through a contact hole penetrating the passivation film 338 and the planarization film 339.

[0097] The pixel-defining film 344 may be formed to cover the edge of the anode electrode 341 to define the corresponding pixel. In other words, the pixel-defining film 344 may define each pixel. Each pixel may be a region where the anode electrode 341, the light-emitting layer 342, and the cathode electrode 343 are sequentially stacked, and holes from the anode electrode 341 and electrons from the cathode electrode 343 combine in the light-emitting layer 342 to emit light.

[0098] The light-emitting layer 342 may be formed on the anode electrode 341 and the pixel defining film 344. The light-emitting layer 342 may be an organic light-emitting layer. The light-emitting layer 342 may emit one of red light, green light, and blue light. The peak wavelength of the red light may be in the range of approximately 620 nm to 750 nm, the peak wavelength of the green light may be in the range of approximately 495 nm to 570 nm, and the peak wavelength of the blue light may be in the range of approximately 450 nm to 495 nm. In addition, the light-emitting layer 342 may be a white light-emitting layer that emits white light. In this case, the light-emitting layer 342 may have a stack of a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer, and may be a common layer formed in common for all pixels. In this case, the display panel 300 may further include color filters for displaying red, green, and blue.

[0099] The light emitting layer 342 may include a hole transport layer, an emission layer, and an electron transport layer. The light emitting layer 342 may have a tandem structure having two or more stacks, in which case a charge generation layer may be formed between the stacks.

[0100] The cathode electrode 343 may be formed on the light emitting layer 342. The cathode electrode 343 may be formed to cover the light emitting layer 342. The cathode electrode 343 may be a common layer formed in common for all pixels.

[0101] In the case where the light-emitting element layer 304 is formed as a top-emitting light-emitting element layer, the anode electrode 341 can be formed of a metal material with high reflectivity (such as a stack of Al and Ti (e.g., Ti / Al / Ti), a stack of Al and ITO (e.g., ITO / Al / ITO), a silver (Ag)-palladium (Pd)-copper (Cu) (APC) alloy, or a stack of an APC alloy and ITO (e.g., ITO / APC / ITO)). The cathode electrode 343 can be formed of a transparent conductive oxide (TCO) material such as ITO or IZO, through which light can be transmitted, or a semi-transmissive conductive material such as magnesium (Mg), Ag, or an alloy thereof. In the case where the cathode electrode 343 is formed of a semi-transmissive conductive material, the emission efficiency of the light-emitting element layer 304 can be improved due to the microcavity effect.

[0102] In the case where the light-emitting element layer 304 is formed as a bottom-emitting light-emitting element layer, the anode electrode 341 can be formed of a TCO material such as ITO or IZO or a semi-transmissive conductive material such as Mg, Ag or an alloy thereof. The cathode electrode 343 can be formed of a metal material with high reflectivity (such as a stack of Al and Ti (e.g., Ti / Al / Ti), a stack of Al and ITO (e.g., ITO / Al / ITO), an APC alloy, or a stack of APC alloy and ITO (e.g., ITO / APC / ITO)). In the case where the anode electrode 341 is formed of a semi-transmissive conductive material, the emission efficiency of the light-emitting element layer 304 can be improved due to the microcavity effect.

[0103] The thin film encapsulation layer 305 is formed on the light emitting element layer 304. The thin film encapsulation layer 305 prevents or reduces the penetration of oxygen or moisture into the light emitting layer 342 and the cathode electrode 343. The thin film encapsulation layer 305 may include at least one inorganic film. The inorganic film may be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, or titanium oxide. The thin film encapsulation layer 305 may also include at least one organic film. The organic film may be formed to a sufficient thickness to prevent or reduce particles from entering the light emitting layer 342 and the cathode electrode 343 through the thin film encapsulation layer 305. The organic film may include one of epoxy resin, acrylate, and urethane acrylate.

[0104] The display circuit board 310 may be attached to one side of the display panel 300. Specifically, one side of the display circuit board 310 may be attached to a pad provided on one side of the display panel 300 via an anisotropic conductive film.

[0105] like Figure 23E As shown in , the display circuit board 310 can be bent at least once. Figure 23EAs shown in , the display circuit board 310 can be attached to the top surface or the bottom surface of the display panel 300 and can be bent toward the bottom of the display panel 300, specifically, toward the bottom of the panel bottom member 400. The touch circuit board 210 can be attached to the top surface or the bottom surface of the touch sensing device 200 and can be bent toward the bottom of the display panel 300, specifically, toward the bottom of the panel bottom member 400. As a result, the touch connection portion provided at one side of the touch circuit board 210 can be connected to the touch connector 312a of the display circuit board 310. This will be referred to later. Figure 3 、 Figure 4 、 Figure 5 and Figure 6 The display circuit board 310 will be described in detail.

[0106] The display driving unit 320 outputs signals and voltages for driving the display panel 300 via the display circuit board 310. The display driving unit 320 may be formed as an integrated circuit and may be mounted on the display circuit board 310, but the present disclosure is not limited thereto. For example, the display driving unit 320 may be directly attached to the display panel 300, in which case the display driving unit 320 may be attached to the top or bottom surface of the display panel 300.

[0107] The panel bottom member 400 may be disposed below the display panel 300. Figure 7 As shown in FIG, the panel bottom member 400 may be attached to the bottom surface of the display panel 300 via a third adhesive member 930. The third adhesive member 930 may be an OCA, an OCR, or a pressure sensitive adhesive (PSA).

[0108] The panel bottom member 400 may include at least one of a light absorbing member for absorbing incident light from the outside, a buffering member for absorbing impact from the outside, a heat dissipating member for effectively releasing heat from the display panel 300, and a light shielding layer for blocking incident light from the outside.

[0109] A light absorbing member may be provided below the display panel 300. The light absorbing member blocks the transmission of light and may thus prevent or limit elements provided therebelow (i.e., the first force sensor 510, the second force sensor 520, the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540) from becoming visible from above the display panel 300. The light absorbing member may include a light absorbing material such as a black pigment or dye.

[0110] A buffer member may be provided below the light absorbing member. The buffer member absorbs external impacts and may thereby prevent or reduce damage to the display panel 300. The buffer member may be formed as a single layer or multiple layers. For example, the buffer member may include a polymer resin such as polyurethane, polycarbonate, polypropylene, or polyethylene, or an elastic material such as sponge obtained by foaming rubber, urethane, or acrylic material. The buffer member may be a cushion layer.

[0111] The heat dissipation member may be disposed below the buffer member. Figure 23A and Figure 23B As shown in the figure, the heat dissipation member may include a first heat dissipation layer (first heat sink) 410 and a second heat dissipation layer (second heat sink) 420, the first heat dissipation layer 410 including graphite or carbon nanotubes, and the second heat dissipation layer 420 being formed as a thin metal film using a metal having excellent thermal conductivity such as Cu, Ni, ferrite or silver.

[0112] The first force sensor 510 may be disposed in the third region DR3 corresponding to the second curved portion, and the second force sensor 520 may be disposed in the second region DR2 corresponding to the first curved portion. That is, the first force sensor 510 may be disposed on the right side of the display panel 300 below the display panel 300, and the second force sensor 520 may be disposed on the left side of the display panel 300 below the display panel 300. Figure 1 and Figure 2 As shown in FIG, the left and right sides of the display panel 300 are opposite to each other. The first force sensor 510 and the second force sensor 520 may be attached to the bottom surface of the panel bottom member 400.

[0113] like Figure 7 and Figure 9 As shown in FIG, first bumps 550 may be provided on the first force sensor 510. Each first bump 550 may be attached to the bottom surface of the panel bottom member 400 via a fourth adhesive member 940, and to the top surface of the first force sensor 510 via a sixth adhesive member 960. The first force sensor 510 may be attached to the top surface of the frame 600 via a fifth adhesive member 950. The fourth adhesive member 940, the fifth adhesive member 950, and the sixth adhesive member 960 may be PSAs. One of the fourth adhesive member 940 and the fifth adhesive member 950 may not be provided.

[0114] The first force sensor 510 may have a rectangular shape having a short side extending in a first direction (or X-axis direction) and a long side extending in a second direction (or Y-axis direction). The first force sensor 510 may be connected to the display circuit board 310 via a first flexible circuit board 530. The second force sensor 520 may be connected to the display circuit board 310 via a second flexible circuit board 540. The first flexible circuit board 530 and the second flexible circuit board 540 may be FPCBs.

[0115] like Figure 3 and Figure 4 As shown in FIG, a force sensing unit 330 for detecting force (pressure) by driving the first force sensor 510 and the second force sensor 520 may be mounted on the display circuit board 310. In this case, the force sensing unit 330 may be formed as an integrated circuit. In addition, the force sensing unit 330 may be incorporated into the display driving unit 320 and then formed as a single integrated circuit.

[0116] The first flexible circuit board 530 and the second flexible circuit board 540 may be connected to the touch circuit board 210 without being connected to the display circuit board 310. In this case, the force sensing unit 330 may be mounted on the touch circuit board 210. In addition, the force sensing unit 330 may be incorporated into the touch circuit board 210 and then formed into a single integrated circuit.

[0117] The frame 600 may be disposed under the panel bottom member 400. The frame 600 may include synthetic resin, metal, or both.

[0118] The waterproof member 610 can be arranged along the edge of the frame 600. The waterproof member 610 can be attached to the bottom surface of the panel bottom member 400 and the top surface of the frame 600. To this end, the waterproof member 610 may include a base film, a first adhesive film provided on one surface of the base film, and a second adhesive film provided on the other surface of the base film. The base film may include PET, PET and a cushion layer, or polyethylene (PE) foam. The first adhesive film and the second adhesive film may be PSA. The first adhesive film may be attached to the bottom surface of the panel bottom member 400, and the second adhesive film may be attached to the top surface of the frame 600.

[0119] The waterproof member 610 may be disposed adjacent to the first force sensor 510 and may also be disposed adjacent to the second force sensor 520. Figure 7As shown in FIG, the waterproof member 610 can be provided on the outside of the first force sensor 510 and on the outside of the second force sensor 520. Here, the outside of the first force sensor 510 refers to the outside of the right side of the first force sensor 510, and the outside of the second force sensor 520 refers to the outside of the left side of the second force sensor 520. In addition, since the first force sensor 510 and the second force sensor 520 are waterproof and dustproof without the help of the waterproof member 610, the waterproof member 610 can be provided on the inside of the first force sensor 510 and the inside of the second force sensor 520. Here, the inside of the first force sensor 510 refers to the outside of the left side of the first force sensor 510, and the inside of the second force sensor 520 refers to the outside of the right side of the second force sensor 520.

[0120] If the height of waterproof member 610 is less than the sum of the heights of first force sensor 510 and first bump 550, first force sensor 510 may be damaged by the force used to attach waterproof member 610. Therefore, the height of waterproof member 610 may preferably be greater than the sum of the heights of first force sensor 510 and first bump 550. However, if the height of waterproof member 610 is significantly greater than the sum of the heights of first force sensor 510 and first bump 550, first force sensor 510 may not be able to correctly detect force. Therefore, the height of waterproof member 610 may be determined in advance through experiments, taking into account both the potential damage to first force sensor 510 caused by the force used to attach waterproof member 610 and the impairment of the first force sensor 510's ability to detect force.

[0121] The height of the first bump 550 may preferably be greater than that of the first force sensor 510 so that the first bump 550 appropriately pressurizes the force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 of the first force sensor 510 according to the force input from the user.

[0122] according to Figure 1 and Figure 2 In the exemplary embodiment, since the waterproof member 610 is disposed adjacent to both the first force sensor 510 and the second force sensor 520, the waterproof member 610 can prevent or reduce moisture or dust from penetrating through the gap between the display panel 300 and the frame 600. That is, a waterproof and dustproof display device 10 can be provided.

[0123] A first camera hole CMH1, into which the camera device 720 is inserted, a battery hole BH for releasing heat from the battery, and a cable hole CAH, through which the second connection cable 314 is passed to connect to the display circuit board 310, may be formed in the frame 600. Specifically, the cable hole CAH may be disposed adjacent to the right side of the frame 600. In this case, the cable hole CAH may be hidden by the first force sensor 510, which is disposed below the panel bottom member 400 on the right side of the display panel 300. Therefore, the first force sensor 510 may include a recess NTH1 formed on one side of the first force sensor 510 as a notch that does not hide but exposes the cable hole CAH.

[0124] The frame 600 is disposed below the panel bottom member 400 of the display panel 300 and below the first force sensor 510 and the second force sensor 520. When force is applied to the first force sensor 510 and the second force sensor 520, the frame 600 can support the first force sensor 510 and the second force sensor 520. Therefore, the first force sensor 510 and the second force sensor 520 can detect the force applied thereto.

[0125] The main circuit board 700 may be disposed under the frame 600. The main circuit board 700 may be a printed circuit board (PCB) or an FPCB.

[0126] The main circuit board 700 may include a main processor 710, a camera device 720, and a main connector 730. The main processor 710 and the main connector 730 may be provided on the bottom surface of the main circuit board 700 to face the lower cover 900. The camera device 720 may be provided on both the top and bottom surfaces of the main circuit board 700.

[0127] The main processor 710 can control all functions of the display device 10. For example, the main processor 710 can output image data to the display driver unit 320 of the display circuit board 310 so that the display panel 300 displays an image. In addition, the main processor 710 can receive touch data from the touch driver unit 220, can determine the location of the touch input from the user, and can execute an application corresponding to the icon displayed at the location of the touch input. In addition, the main processor 710 can receive force sensing data from the force sensing unit 330 and, based on the force sensing data, execute an application corresponding to the icon displayed at the location of the force input from the user. The main processor 710 causes the vibration generating device 901 to vibrate based on the force sensing data, thereby providing tactile feedback. The main processor 710 can be an application processor, a central processing unit, or a system chip composed of an integrated circuit.

[0128] The camera device 720 processes image frames such as still images or moving images provided by an image sensor in a camera mode and outputs the processed image frames to the main processor 710 .

[0129] The second connection cable 314 passing through the cable hole CAH of the frame 600 can be connected to the main connector 730 of the main circuit board 700 through the gap between the frame 600 and the main circuit board 700. As a result, the main circuit board 700 can be electrically connected to the display circuit board 310 and the touch circuit board 210.

[0130] A mobile communication module may be further provided on the main circuit board 700. The mobile communication module may exchange wireless signals with at least one of a base station, an external terminal, and a server via a mobile communication network. The wireless signals may include various types of data associated with the transmission / reception of audio signals, video call signals, or text / multimedia messages. Furthermore, a sound output device, such as a speaker, capable of outputting sound may be further provided on the main circuit board 700.

[0131] The lower cover 900 may be disposed below the frame 600 and the main circuit board 700. The lower cover 900 may be coupled or fixed to the frame 600. The lower cover 900 may form a bottom housing of the display device 10. The lower cover 900 may include plastic and / or metal.

[0132] A second camera hole CMH2 (in which the camera device 720 is inserted to protrude outward) may be formed in the lower cover 900. The position of the camera device 720 and the positions of the first and second camera holes CMH1 and CMH2 corresponding to the camera device 720 are not limited to Figure 2 、 Figure 4 and Figure 5 The location shown in .

[0133] The vibration generating device 901 may be provided on the top surface of the lower cover 900 and may be connected to the main circuit board 700. As a result, the vibration generating device 901 may vibrate in response to a vibration signal from the main processor 710. The vibration generating device 901 may be one of an eccentric rotating mass (ERM) actuator, a linear resonant actuator (LRA), and a piezoelectric actuator.

[0134] Figure 3 It shows that Figure 2 1 is a bottom view of an exemplary embodiment of a display panel 300 attached to a cover window 100 before the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540 are bent downward. Figure 4 It shows that Figure 2 1 is a bottom view of an exemplary embodiment of a display panel 300 attached to a cover window 100 after the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540 are bent downward. Figure 5 It shows Figure 2 A plan view of the frame 600. Figure 6It shows Figure 2 A plan view of the main circuit board 700. Figure 7 It is along Figure 3 and Figure 4 A sectional view taken along section line II'. Figure 8 is a cross-sectional view showing a display area of ​​the display panel 300 .

[0135] In the following we will refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 Describe how to use the first flexible circuit board 530 to connect the first force sensor 510 to the display circuit board 310, how to use the second flexible circuit board 540 to connect the second force sensor 520 to the display circuit board 310, and how to use the second connection cable 314 to connect the display circuit board 310 to the main circuit board 700. Figure 5 and Figure 6 different, Figure 3 and Figure 4 This is a bottom view in a plan view, so the display device 10 is flipped from left to right. Figure 5 In FIG, the display circuit board 310 is shown by a dotted line. Figure 6 In FIG, the second connecting cable 314 is shown with a dotted line.

[0136] Reference Figure 3 、 Figure 4 、 Figure 5 and Figure 6 The display circuit board 310 may include a first circuit board 311 , a second circuit board 312 and a first connection cable 313 .

[0137] like Figure 3 and Figure 23E As shown in FIG, the first circuit board 311 may be attached to one side of the top surface or bottom surface of the substrate of the display panel 300 and may be bent toward the bottom of the panel bottom member 400. For example, as shown in FIG. Figure 3 As shown in , the first circuit board 311 may be attached to the bottom surface of the display panel 300. For example, as shown in Figure 23E As shown in , the first circuit board 311 may be attached to the top surface of the display panel 300. Figure 3 and Figure 17 As shown in FIG, the first circuit board 311 may be attached to the upper side or the lower side of the substrate of the display panel 300 in the second direction (or Y-axis direction). Figure 3 As shown in FIG, the first circuit board 311 may be attached to the lower side of the display panel 300 in the second direction (or Y-axis direction). In another exemplary embodiment, as shown in FIG. Figure 17As shown in , the first circuit board 311 may be attached to the upper side of the display panel 300 in the second direction (or Y-axis direction). Figure 5 As shown in FIG, the first circuit board 311 may be fixed to a fixing hole FH formed in the frame 600 by a fixing member.

[0138] The first circuit board 311 may include a display driving unit 320, a force sensing unit 330, a first connector 311a, a second connector 311b, and a third connector 311c. The display driving unit 320, the force sensing unit 330, the first connector 311a, the second connector 311b, and the third connector 311c may be disposed on one surface of the first circuit board 311.

[0139] The first connector 311a may be connected to a connector connection portion provided at one end of the first flexible circuit board 530 connected to the first force sensor 510. As a result, the first force sensor 510 may be electrically connected to the force sensing unit 330.

[0140] The second connector 311b may be connected to a connector connection portion provided at one end of the second flexible circuit board 540 connected to the second force sensor 520. As a result, the second force sensor 520 may be electrically connected to the force sensing unit 330.

[0141] The third connector 311c may be connected to a first end of the first connection cable 313 connected to the second circuit board 312. As a result, the display driving unit 320 and the force sensing unit 330 mounted on the first circuit board 311 may be electrically connected to the second circuit board 312 via the first connection cable 313.

[0142] The second circuit board 312 may include a touch connector 312a, a first connection connector 312b, and a second connection connector 312c. The first and second connection connectors 312b and 312c may be provided on one surface of the second circuit board 312, and the touch connector 312a may be provided on the other surface of the second circuit board 312.

[0143] The touch connector 312a may be connected to a touch connection portion provided at one end of the touch circuit board 210. As a result, the touch driving unit 220 may be electrically connected to the second circuit board 312.

[0144] The first connection connector 312b may be connected to a second end of the first connection cable 313 connected to the first circuit board 311. As a result, the display driving unit 320 mounted on the first circuit board 311 may be electrically connected to the second circuit board 312 via the first connection cable 313.

[0145] The second connection connector 312c may be connected to a first end of the second connection cable 314 connected to the main connector 730 of the main circuit board 700. As a result, the second circuit board 312 may be electrically connected to the main circuit board 700 via the second connection cable 314.

[0146] The connector connection portion 315 may be formed at the second end of the second connection cable 314. Figure 4 and Figure 5 , the connector connection portion 315 of the second connection cable 314 may extend to the bottom of the frame 600 through the cable hole CAH of the frame 600. Since the notch-shaped recess NTH1 is formed on one side of the first force sensor 510 to correspond to the cable hole CAH of the frame 600, the cable hole CAH of the frame 600 may be exposed instead of being covered by the first force sensor 510.

[0147] In addition, if Figure 6 As shown in FIG, a gap is formed between the frame 600 and the main circuit board 700, and the connector connection portion 315 of the second connection cable 314 passing through the cable hole CAH can extend to the bottom of the main circuit board 700 through the gap between the frame 600 and the main circuit board 700. Finally, the connector connection portion 315 of the second connection cable 314 can be connected to the main connector 730 provided on the bottom surface of the main circuit board 700.

[0148] according to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 In the exemplary embodiment, the recess NTH1 is formed on one side of the first force sensor 510 as a notch that does not block the cable hole CAH of the frame 600. Therefore, the second connection cable 314 connected to the display circuit board 310 can extend through the cable hole CAH to the bottom of the frame 600 and thus can be connected to the main connector 730 of the main circuit board 700. Therefore, the display circuit board 310 and the main circuit board 700 can be stably connected.

[0149] The first flexible circuit board 530 electrically connects the first force sensor 510 and the display circuit board 310. A first end of the first flexible circuit board 530 can be connected to the first connector 311a of the display circuit board 310. To this end, a connector connection portion can be provided at the first end of the first flexible circuit board 530. A second end of the first flexible circuit board 530 can be connected to the pad unit PAD provided on the first force sensor 510. The second end of the first flexible circuit board 530 can be attached to the pad unit PAD of the first force sensor 510.

[0150] Specifically, the first force sensor 510 may have a rectangular shape having a short side extending in the first direction (or the X-axis direction) and a long side extending in the second direction (or the Y-axis direction). In this case, the pad unit PAD of the first force sensor 510 may be provided at one end of the first force sensor 510 in the second direction (or the Y-axis direction). For example, the pad unit PAD of the first force sensor 510 may be provided at the lower end of the first force sensor 510 in the second direction (or the Y-axis direction).

[0151] like Figure 3 As shown in FIG, when the display circuit board 310 is unfolded, the first flexible circuit board 530 can be connected to the first connector 311a of the display circuit board 310 instead of being bent toward the bottom of the display panel 300. Therefore, the first flexible circuit board 530 can have a curved shape such as an L shape. That is, the first flexible circuit board 530 can be formed to extend from the end of the first force sensor 510 in the second direction (or Y-axis direction) and bend toward the display circuit board 310 in a direction opposite to the first direction (or X-axis direction).

[0152] The second flexible circuit board 540 electrically connects the second force sensor 520 and the display circuit board 310. A first end of the second flexible circuit board 540 can be connected to the second connector 311b of the display circuit board 310. To this end, a connector connection portion can be provided at the first end of the second flexible circuit board 540. A second end of the second flexible circuit board 540 can be connected to a pad unit provided at the second force sensor 520. The second end of the second flexible circuit board 540 can be attached to the pad unit of the second force sensor 520.

[0153] Specifically, the second force sensor 520 may have a rectangular shape having a short side extending in the first direction (or the X-axis direction) and a long side extending in the second direction (or the Y-axis direction). In this case, the pad unit of the second force sensor 520 may be provided at one end of the second force sensor 520 in the second direction (or the Y-axis direction). For example, the pad unit of the second force sensor 520 may be provided at the lower end of the second force sensor 520 in the second direction (or the Y-axis direction).

[0154] like Figure 3 As shown in FIG, when the display circuit board 310 is unfolded, the second flexible circuit board 540 can be connected to the second connector 311b of the display circuit board 310 instead of being bent toward the bottom of the display panel 300. Therefore, the second flexible circuit board 540 can have a curved shape such as an L shape. That is, the second flexible circuit board 540 can be formed to extend from the end of the second force sensor 520 in the second direction (or Y-axis direction) and bend toward the display circuit board 310 in the first direction (or X-axis direction).

[0155] like Figure 4 and Figure 23E As shown in , the display circuit board 310, the first flexible circuit board 530 and the second flexible circuit board 540 can be bent at least once. Specifically, after the first flexible circuit board 530 and the second flexible circuit board 540 are respectively connected to the first connector 311a and the second connector 311b of the display circuit board 310, the display circuit board 310, the first flexible circuit board 530 and the second flexible circuit board 540 can be bent toward the bottom of the display panel 300, specifically, as shown in FIG. Figure 4 and Figure 23E As shown in FIG, it is bent toward the bottom of the panel bottom member 400 and can then be fixed.

[0156] In this case, the second end of the first flexible circuit board 530 is attached to the pad unit PAD of the first force sensor 510, while the first end of the first flexible circuit board 530 can be disposed below the panel bottom member 400 because the first flexible circuit board 530 is bent toward the bottom of the panel bottom member 400. Similarly, the second end of the second flexible circuit board 540 is attached to the pad unit of the second force sensor 520, while the first end of the second flexible circuit board 540 can be disposed below the panel bottom member 400 because the second flexible circuit board 540 is bent toward the bottom of the panel bottom member 400. Similarly, one side of the display circuit board 310 can be attached to the top or bottom surface of the display panel 300, while the other side of the display circuit board 310 can be disposed below the panel bottom member 400 because the display circuit board 310 is bent toward the panel bottom member 400.

[0157] according to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 In an exemplary embodiment, the first force sensor 510 may be connected to the display circuit board 310 via the first flexible circuit board 530, and the second force sensor 520 may be connected to the display circuit board 310 via the second flexible circuit board 540. The first force sensor 510 and the second force sensor 520 may be stably and electrically connected to the force sensing unit 330 of the display circuit board 310.

[0158] Figure 9 is a plan view illustrating a first force sensor 510 and a first bump 550 of the display device 10 constructed according to an exemplary embodiment of the present disclosure.

[0159] Reference Figure 9, the first force sensor 510 may have a rectangular shape having a short side extending in a first direction (or X-axis direction) and a long side extending in a second direction (or Y-axis direction). However, the shape of the first force sensor 510 is not particularly limited but may vary depending on the position of the first force sensor 510.

[0160] The first force sensor 510 may include a plurality of first to eighth force sensing units CE1 , CE2 , CE3 , CE4 , CE5 , CE6 , CE7 , and CE8 . Figure 9 The first force sensor 510 is illustrated as including eight force sensing units, but the number of force sensing units of the first force sensor 510 is not particularly limited.

[0161] The first to eighth force sensing units CE1 , CE2 , CE3 , CE4 , CE5 , CE6 , CE7 , and CE8 may independently detect pressure at their respective positions. Figure 9 The first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 are shown as being arranged in a single row, but the present disclosure is not limited thereto. The first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 can be arranged in multiple rows as needed. The first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 can be arranged in multiple rows as needed. Figure 9 As shown in FIG, they are separated from each other by a predetermined distance, or may be arranged continuously.

[0162] The first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7 and CE8 may have different areas according to the purpose of use. Figure 13 , the first to seventh force sensing units CE1, CE2, CE3, CE4, CE5, CE6, and CE7 may be used as physical buttons such as volume control buttons VB+ and VB- and a power button PB provided on one side of the display device 10. For example, referring to Figure 14 , the eighth force sensing cell CE8 can be used as a button for detecting pressure from the user. In this case, the eighth force sensing cell CE8 can be formed to have an area larger than that of the first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7. The eighth force sensing cell CE8 can be formed to have a length larger than that of the first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7 in the longitudinal direction of the first force sensor 510 (or in the Y-axis direction).

[0163] Figure 9 The first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7 are shown as having the same area, but the present disclosure is not limited thereto. The first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7 may have different areas. In addition, some of the first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7 may have the same area, while other force sensing cells may have the same area but different from the area of ​​the some of the first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7.

[0164] The first bump 550 may be disposed on the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 so as to overlap with the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8. The first bump 550 may pressurize the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 according to input from the user. Therefore, the input from the user may be detected by the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8.

[0165] In order to increase the force applied by the first bump 550 to the first to eighth force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8, the first bump 550 may be formed to have an area smaller than that of the first to eighth force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8. The first bump 550 may be formed to have an area smaller than that of the force sensing layer PSL of each of the first to eighth force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8.

[0166] The area of ​​the first bump 550 may be proportional to the area of ​​the force sensing unit. Figure 9, when the eighth force sensing unit CE8 has an area larger than those of the first to seventh force sensing units CE1, CE2, CE3, CE4, CE5, CE6, and CE7, the area of ​​the first bump 550 overlapping with the eighth force sensing unit CE8 may be larger than the area of ​​the first bump 550 overlapping with the first to seventh force sensing units CE1, CE2, CE3, CE4, CE5, CE6, and CE7.

[0167] In order not to block the cable hole CAH of the frame 600 , the recess NTH1 may be formed as a notch corresponding to the cable hole CAH of the frame 600 .

[0168] The first force sensor 510 further includes a pad unit PAD including a plurality of pads connected to the driving line TL and the first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8. The first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8 are connected to the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8. The pad unit PAD may be provided at one end of the first force sensor 510 in the second direction (or Y-axis direction).

[0169] The second force sensor 520 and the second bump are respectively connected to each other except that the second force sensor 520 does not include the recess NTH1. Figure 9 The first force sensor 510 and the first bump 550 are almost identical, and thus, a detailed description thereof will be omitted.

[0170] Figure 10 It shows Figure 9 A plan view of area A. Figure 11 It is along Figure 10 A sectional view taken along section line II-II'. Figure 12 is a graph showing a change in resistance of a sensing line according to a force of a force sensing layer. Figure 10 and Figure 11 The first force sensor 510 includes a first substrate SUB1, a second substrate SUB2, a driving line TL, first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7 and RL8, and first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7 and CE8.

[0171] For convenience, Figure 10 and Figure 111 and 2 only show the fourth force sensing unit CE4 and the fifth force sensing unit CE5 and the first to fifth sensing lines RL1, RL2, RL3, RL4 and RL5 connected to the first to fifth force sensing units CE1 to CE5. Figure 10 The second substrate SUB2 is not shown.

[0172] The first substrate SUB1 and the second substrate SUB2 are arranged to face each other. The first substrate SUB1 and the second substrate SUB2 may include polyethylene, polyimide, polycarbonate, polysulfone, polyacrylate, polystyrene, polyvinyl chloride, polyvinyl alcohol, polynorbornene, or polyester. In one exemplary embodiment, the first substrate SUB1 and the second substrate SUB2 may be formed as a polyethylene terephthalate (PET) film or a polyimide film.

[0173] The first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 are disposed between the first substrate SUB1 and the second substrate SUB2. Driving lines TL, first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8, driving pads, and sensing pads are disposed on a surface of the first substrate SUB1 that faces the second substrate SUB2. The first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 are disposed between the first substrate SUB1 and the second substrate SUB2.

[0174] Each of the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 may be connected to one driving line and at least one sensing line. For example, the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 may all be connected to the same driving line (i.e., driving line TL) and may be connected to the first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8, respectively. Figure 10 The fourth force sensing unit CE4 may be connected to the driving line TL and the fourth sensing line RL4, and the fifth force sensing unit CE5 may be connected to the driving line TL and the fifth sensing line RL5. The driving line TL may be connected to the driving pad, and the first to fifth sensing lines RL1, RL2, RL3, RL4, and RL5 may be connected to their respective sensing pads.

[0175] The pad unit PAD may include a driving pad and a sensing pad. The driving pad may be connected to the driving leads of the first flexible circuit board 530, and the sensing pad may be connected to their respective sensing leads of the first flexible circuit board 530. Since the first flexible circuit board 530 is connected to the display circuit board 310, the first flexible circuit board 530 may be electrically connected to the force sensing unit 330 mounted on the display circuit board 310. The force sensing unit 330 may detect the force applied to the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 by applying a driving voltage to the driving lines TL via the driving pads and detecting the current value or voltage value from the first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8 via the sensing pads.

[0176] The first force sensor 510 may further include a bonding layer AHL disposed between the first substrate SUB1 and the second substrate SUB2 and bonding the first substrate SUB1 and the second substrate SUB2 together. The bonding layer AHL may be formed as a PSA layer. The bonding layer AHL may be disposed along the edges of each of the first substrate SUB1 and the second substrate SUB2. In one exemplary embodiment, the bonding layer AHL may completely surround the edges of each of the first substrate SUB1 and the second substrate SUB2, thereby sealing the interior of the first force sensor 510. Furthermore, the bonding layer AHL may serve as a spacer for uniformly maintaining the gap between the first substrate SUB1 and the second substrate SUB2. The bonding layer AHL may not be formed in the pad unit PAD and may not overlap with the drive lines TL, the first to eighth sense lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8, the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8, the drive pads, and the sensing pads, but the present disclosure is not limited thereto. The bonding layer AHL may overlap the driving line TL, the first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8, the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8, the driving pad, and the sensing pad.

[0177] In the process of bonding the first substrate SUB1 and the second substrate SUB2 together, the bonding layer AHL may be first attached to one surface of one of the first substrate SUB1 and the second substrate SUB2 and then attached to one surface of the other substrate. In the process of bonding the first substrate SUB1 and the second substrate SUB2 together, a separate bonding layer AHL may be provided on the first substrate SUB1 and the second substrate SUB2 and may be bonded to each other.

[0178] like Figure 10 As shown in , each of the first to eighth force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, CE7 and CE8 includes a driving connection electrode TCE, a sensing connection electrode RCE, a driving electrode TE1, a sensing electrode RE1 and a force sensing layer PSL.

[0179] The driving connection electrode TCE, the sensing connection electrode RCE, the driving electrode TE1, and the sensing electrode RE1 are disposed on a surface of the first substrate SUB1 facing the second substrate SUB2.

[0180] The drive connection electrode TCE is connected to the drive line TL and the drive electrode TE1. Specifically, the drive connection electrode TCE is connected to the drive line TL at one end of the drive connection electrode TCE in the longitudinal direction (or in the Y-axis direction) of the drive connection electrode TCE. The drive electrode TE1 may branch from the drive connection electrode TCE in the transverse direction (or in the X-axis direction) of the drive connection electrode TCE.

[0181] The sensing connection electrode RCE is connected to one of the first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8. Specifically, the sensing connection electrode RCE may be connected to one of the first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8 at one end of the sensing connection electrode RCE in a longitudinal direction of the sensing connection electrode RCE. The sensing electrode RE1 may branch from the sensing connection electrode RCE in a transverse direction (or in the X-axis direction) of the sensing connection electrode RCE.

[0182] The drive electrode TE1 and the sensing electrode RE1 may be provided on the same layer. The drive electrode TE1 and the sensing electrode RE1 may be formed of the same material. For example, the drive electrode TE1 and the sensing electrode RE1 may include a conductive material such as Ag or Cu. The drive electrode TE1 and the sensing electrode RE1 may be formed on the first substrate SUB1 by screen printing.

[0183] The drive electrode TE1 and the sensing electrode RE1 may be arranged adjacent to each other but may not be connected to each other. The drive electrode TE1 and the sensing electrode RE1 may be arranged parallel to each other. The drive electrode TE1 and the sensing electrode RE1 may be arranged alternately in the longitudinal direction of the drive connection electrode TCE or the sensing connection electrode RCE (or in the Y-axis direction). That is, the drive electrode TE1 and the sensing electrode RE1 may be arranged in the order of drive electrode TE1, sensing electrode RE1, drive electrode TE1, and sensing electrode RE1 along the longitudinal direction of the drive connection electrode TCE or the sensing connection electrode RCE2 (or in the Y-axis direction).

[0184] The force sensing layer PSL is disposed on a surface of the second substrate SUB2 facing the first substrate SUB1. The force sensing layer PSL may be disposed to overlap the driving electrode TE1 and the sensing electrode RE1.

[0185] The force sensing layer (PSL) may include a pressure-sensitive material and a polymer resin in which the pressure-sensitive material is disposed. The pressure-sensitive material may be fine particles or nanoparticles of a metal such as Ni, Al, Ti, tin (Sn), or Cu. For example, the force sensing layer (PSL) may be a quantum tunneling composite (QTC) layer.

[0186] When no force is applied to the second substrate SUB2 in the height direction of the first force sensor 510 (or in the Z-axis direction), as shown in FIG. Figure 11 As shown in , gaps are formed between the force sensing layer PSL and the driving electrode TE1 and between the force sensing layer PSL and the sensing electrode RE1. That is, when no force is applied to the second substrate SUB2, the force sensing layer PSL is spaced apart from the driving electrode TE1 and the sensing electrode RE1.

[0187] When a force is applied to the second substrate SUB2 in the height direction (or in the Z-axis direction) of the first force sensor 510, the force sensing layer PSL may be placed in contact with the drive electrode TE1 and the sense electrode RE1. In this case, at least one drive electrode TE1 and at least one sense electrode RE1 may be physically connected via the force sensing layer PSL, and the force sensing layer PSL may function as a resistor.

[0188] according to Figure 10 and Figure 11 In an exemplary embodiment, the size of the contact area between the force sensing layer PSL and the driving electrode TE1 / sensing electrode RE1 may vary according to the force applied to each of the first to eighth force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8, and as a result, the resistance of the sensing line electrically connected to the sensing electrode RE1 of the corresponding force sensing cell may vary. For example, referring to Figure 12The greater the force applied to each of the first to eighth force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 of the first force sensor 510, the lower the resistance of the sensing line connected to the sensing electrode RE1 of the corresponding force sensing cell. Since the force sensing unit 330 can detect a change in current or voltage from the first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8 based on a change in resistance of the first to eighth sensing lines RL1, RL2, RL3, RL4, RL5, RL6, RL7, and RL8, it is possible to detect the force with which the user presses the display device 10 with his or her hand, and the first force sensor 510 can function as an input device for detecting input from the user.

[0189] The second force sensor 520 is similar to the above reference Figure 10 and Figure 11 The described first force sensor 510 is substantially the same, and thus, a detailed description thereof will be omitted.

[0190] Figure 13 and Figure 14 is a perspective view illustrating an exemplary concept of using the first force sensor 510 and the second force sensor 520 of the display device 10 as physical buttons.

[0191] Specifically, Figure 13 and Figure 14 The first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 of each of the first force sensor 510 and the second force sensor 520 disposed in the second and third regions DR2 and DR3 of the display device 10 are shown. A first vibration generating device may be disposed adjacent to the first to fourth force sensing units CE1, CE2, CE3, and CE4 of the first force sensor 510 disposed in the right curved portion of the display device 10, and a third vibration generating device may be disposed adjacent to the fifth to eighth force sensing units CE5, CE6, CE7, and CE8 of the first force sensor 510. Furthermore, a second vibration generating device may be disposed adjacent to the first to fourth force sensing units CE1, CE2, CE3, and CE4 of the second force sensor 520 disposed in the left curved portion of the display device 10, and a fourth vibration generating device may be disposed adjacent to the fifth to eighth force sensing units CE5, CE6, CE7, and CE8 of the second force sensor 520.

[0192] Figure 13 It is shown that the user presses the fifth force sensing unit CE5 in the left curved portion of the display device 10 corresponding to the second region DR2 with an index finger while gripping the display device 10 with the right hand. Figure 14 It is shown that while grasping the display device 10 with the right hand, the user squeezes the eighth force sensing unit CE8 in the left curved portion of the display device 10 with the middle finger, ring finger and little finger, and squeezes the eighth force sensing unit CE8 in the right curved portion of the display device 10 corresponding to the third area DR3 with the palm of the hand.

[0193] Reference Figure 13 and Figure 14 , the first force sensor 510 and the second force sensor 520 can be used as physical buttons. Specifically, in response to the forces applied to the first to eighth force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 of the first force sensor 510 formed in the right curved portion of the display device 10 and the forces applied to the first to eighth force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 of the second force sensor 520 formed in the left curved portion of the display device 10, a predetermined application or operation can be executed or performed accordingly.

[0194] For example, the first force sensing unit CE1 and the second force sensing unit CE2 formed in the right curved portion of the display device 10 can be used as a volume-up button VB+ for increasing the volume of the display device 10, the third force sensing unit CE3 and the fourth force sensing unit CE4 formed in the right curved portion of the display device 10 can be used as a volume-down button VB- for decreasing the volume of the display device 10, and the fifth force sensing unit CE5, the sixth force sensing unit CE6 and the seventh force sensing unit CE7 formed in the right curved portion of the display device 10 can be used as a power button PB for turning off the screen or power of the display device 10.

[0195] In this example, in response to the force detected by the first and second force sensing cells CE1 and CE2 formed in the right curved portion of the display device 10, the main processor 710 may control the volume of the speaker of the display device 10 to increase. In addition, in response to the force detected by the third and fourth force sensing cells CE3 and CE4 formed in the right curved portion of the display device 10, the main processor 710 may control the volume of the speaker of the display device 10 to decrease. In addition, in response to the force detected by the fifth, sixth, and seventh force sensing cells CE5, CE6, and CE7 formed in the right curved portion of the display device 10, the main processor 710 may turn off the screen of the display device 10 or may output a screen for selecting to power off the display device 10.

[0196] For example, the first force sensing unit CE1 and the second force sensing unit CE2 formed in the left curved portion of the display device 10 can be used as a call button CB for executing a call application, the third force sensing unit CE3 and the fourth force sensing unit CE4 formed in the left curved portion of the display device 10 can be used as a camera button CMB for executing a camera application, and the fifth force sensing unit CE5, the sixth force sensing unit CE6 and the seventh force sensing unit CE7 formed in the left curved portion of the display device 10 can be used as an internet button IB for executing an internet application.

[0197] In this example, in response to the force detected by the first and second force sensing cells CE1 and CE2 formed in the left curved portion of the display device 10, the main processor 710 may control a call application to be executed. Furthermore, in response to the force detected by the third and fourth force sensing cells CE3 and CE4 formed in the left curved portion of the display device 10, the main processor 710 may control a camera application to be executed. Furthermore, in response to the force detected by the fifth, sixth, and seventh force sensing cells CE5, CE6, and CE7 formed in the left curved portion of the display device 10, the main processor 710 may control an internet application to be executed.

[0198] Figure 13 and Figure 14 The exemplary embodiments are merely exemplary, and thus, the present disclosure is not limited thereto. That is, in response to forces applied to the first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7 of the first force sensor 510 disposed in the right curvature of the display device 10 and the first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7 of the second force sensor 520 disposed in the left curvature of the display device 10, various functions, including or excluding the functions described herein, may be performed. Furthermore, the first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7 of the first force sensor 510 disposed in the right curvature of the display device 10 and the first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7 of the second force sensor 520 disposed in the left curvature of the display device 10 may be programmed to cause different operations to be performed.

[0199] The eighth force sensing cell CE8 formed in the left and right curved portions of the display device 10 can function as a squeeze sensing button SB. The squeeze force applied to the eighth force sensing cell CE8 of each of the first and second force sensors 510 and 520 can be greater than the forces applied to the first to seventh force sensing cells CE1, CE2, CE3, CE4, CE5, CE6, and CE7 of each of the first and second force sensors 510 and 520. In response to the squeeze force detected by the eighth force sensing cell CE8 formed in the left and right curved portions of the display device 10, the main processor 710 can control a predetermined application or operation to be executed or performed. For example, in response to the squeeze force detected by the eighth force sensing cell CE8 formed in the left and right curved portions of the display device 10, the main processor 710 can control the display device 10 to power on from sleep mode.

[0200] according to Figure 13 and Figure 14 In an exemplary embodiment, the first force sensor 510 and the second force sensor 520 are provided in the second region DR2 and the third region DR3 corresponding to the curved portion of the display device 10, and thus can be used as physical buttons such as volume control buttons VB+ and VB-, a power button PB, a call button CB, a camera button CMB, an internet button IB, and a squeeze sensing button SB.

[0201] In addition, the vibration generating device 901 can be controlled to vibrate in response to the force applied to the first force sensor 510 and the second force sensor 520. In this case, the vibration pattern generated by the vibration generating device 901 in response to the force applied to the first force sensor 510 can be different from the vibration pattern generated by the vibration generating device 901 in response to the force applied to the second force sensor 520. In addition, the vibration pattern generated by the vibration generating device 901 can vary depending on which of the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 of each of the first force sensor 510 and the second force sensor 520 the force is applied to. The vibration pattern generated by the vibration generating device 901 can be controlled by controlling the vibration frequency, vibration amplitude, and / or vibration duration of the vibration generating device 901.

[0202] according to Figure 13 and Figure 14 In an exemplary embodiment, the vibration generating device 901 may vibrate in response to forces detected by the first to eighth force sensing units CE1, CE2, CE3, CE4, CE5, CE6, CE7, and CE8 of each of the first force sensor 510 and the second force sensor 520, and thus may provide various tactile feedback to the user.

[0203] Figure 15 It shows that Figure 2 1 is a bottom view of another exemplary embodiment of a display panel 300 attached to a cover window 100 before the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540 are bent downward. Figure 16 It shows that Figure 2 1 is a bottom view of another exemplary embodiment of a display panel 300 attached to a cover window 100 after the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540 are bent downward.

[0204] Figure 15 and Figure 16 An exemplary embodiment of Figure 3 and Figure 4 The difference of the exemplary embodiment of FIG. 5 is that the display circuit board 310 includes a single connector connected to both the first flexible circuit board 530 and the second flexible circuit board 540, ie, the fourth connector 311d. Hereinafter, the description will mainly focus on Figure 15 and Figure 16 An exemplary embodiment of Figure 3 and Figure 4 The differences between the exemplary embodiments are shown in FIG.

[0205] Reference Figure 15 and Figure 16 The display circuit board 310 may include a fourth connector 311d, which may include a plurality of connector receiving portions into which the plurality of connector connecting portions may be inserted. The first connector receiving portion of the fourth connector 311d may be disposed to face the first flexible circuit board 530 and may be connected to a connector connecting portion provided at a first end of the first flexible circuit board 530 connected to the first force sensor 510. The second connector receiving portion of the fourth connector 311d may be disposed to face the second flexible circuit board 540 and may be connected to a connector connecting portion provided at one end of the second flexible circuit board 540 connected to the second force sensor 520. Thus, the first force sensor 510 may be electrically connected to the force sensing unit 330, and the second force sensor 520 may be electrically connected to the force sensing unit 330.

[0206] according to Figure 15 and Figure 16 In the exemplary embodiment of the present invention, the first force sensor 510 may be connected to the display circuit board 310 via the first flexible circuit board 530, and the second force sensor 520 may be connected to the display circuit board 310 via the second flexible circuit board 540. Therefore, the first force sensor 510 and the second force sensor 520 may be stably electrically connected to the force sensing unit 330 of the display circuit board 310.

[0207] Figure 17 It shows that Figure 2 1 is a bottom view of another exemplary embodiment of a display panel 300 attached to a cover window 100 before the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540 are bent downward. Figure 18 It shows that Figure 2 1 is a bottom view of another exemplary embodiment of a display panel 300 attached to a cover window 100 after the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540 are bent downward. Figure 19 It shows Figure 17 and Figure 18 300 is a plan view of the display panel 300.

[0208] Figure 17 、 Figure 18 and Figure 19 An exemplary embodiment of Figure 3 and Figure 4 The exemplary embodiment of the present invention is different in that the first side of the display panel 300 is partially recessed in a plan view, and the display circuit board 310 is attached to the protrusions 111b and 111c located on the first side of the display panel 300. Hereinafter, the following description will be mainly focused on Figure 17 、 Figure 18 and Figure 19 An exemplary embodiment of Figure 3 and Figure 4 The differences between the exemplary embodiments are shown in FIG.

[0209] Reference Figure 17 and Figure 18 , the first side of the display panel 300 may be partially recessed in a plan view. Specifically, the first side of the display panel 300 may be recessed in a bay, notch, or groove shape in a plan view. Thus, the first protrusion 111b and the second protrusion 111c may be formed on the first side of the display panel 300.

[0210] Specifically, refer to Figure 19 The display panel 300 may include a first main body portion 111a, a first protrusion portion 111b, and a second protrusion portion 111c. The first main body portion 111a has a first maximum width W in the first direction. 111a The first protrusion 111b protrudes from the first main body portion 111a in the second direction, and the second protrusion 111c protrudes from the first main body portion 111a in the second direction and is spaced apart from the first protrusion 111b in the first direction. The first protrusion 111b of the display panel 300 may have a second maximum width W in the first direction. 111b , and the second protrusion 111c may have a third maximum width W in the first direction 111c The second maximum width W 111band the third maximum width W 111c Can be smaller than the first maximum width W 111a For example, the second maximum width W 111b and the third maximum width W 111c The sum of can be less than the first maximum width W 111a The second maximum width W 111b and the third maximum width W 111c The display panel 300 may have a rectangular shape with right angles or rounded corners, and the maximum length of the display panel 300 in the second direction may be greater than the length of the display panel 300 in the first direction, that is, the first maximum width W 111a .

[0211] The display area DA of the display panel 300 refers to the area in which an image is displayed by pixels. The display area DA of the display panel 300 can be formed not only in the first main portion 111a but also in the first and second protrusions 111b and 111c. Therefore, an image can be displayed not only in the first main portion 111a but also in the first and second protrusions 111b and 111c.

[0212] The first side of the display panel 300 may be recessed in the shape of a bay, a notch, or a groove in a plan view. The first side of the display circuit board 310 refers to a side of the display circuit board 310 opposite to the first side of the display panel 300. Therefore, the display circuit board 310 may be attached to the first protrusion 111b and the second protrusion 111c formed on the first side of the display panel 300.

[0213] Specifically, the display circuit board 310 may include a second main body portion 112a having a first maximum width in a first direction, and a third protrusion 112b and a fourth protrusion 112c protruding from the second main body portion 112a in a second direction. The third protrusion 112b of the display circuit board 310 may correspond to the first protrusion 111b of the display panel 300, and the fourth protrusion 112c may correspond to the second protrusion 111c of the display panel 300.

[0214] The display circuit board 310 may be disposed on the first protrusion 111b and the second protrusion 111c. For example, the third protrusion 112b of the display circuit board 310 may be attached to the top surface of the first protrusion 111b of the display panel 300, and the fourth protrusion 112c may be attached to the top surface of the second protrusion 111c of the display panel 300.

[0215] In the second body portion 112 a of the display circuit board 310 , a display driving unit 320 , a force sensing unit 330 , a first connector 311 a , a second connector 311 b , and a third connector 311 c may be disposed.

[0216] The first end of the first flexible circuit board 530 can be connected to the first connector 311a, which is provided in the second body portion 112a of the display circuit board 310. To this end, a connector connection portion can be provided at the first end of the first flexible circuit board 530. The second end of the first flexible circuit board 530 can be connected to the pad unit PAD provided at the first force sensor 510. The second end of the first flexible circuit board 530 can be attached to the pad unit PAD of the first force sensor 510.

[0217] Specifically, the first force sensor 510 may have a rectangular shape having a short side extending in the first direction (or the X-axis direction) and a long side extending in the second direction (or the Y-axis direction). In this case, the pad unit PAD of the first force sensor 510 may be provided at one end of the first force sensor 510 in the second direction (or the Y-axis direction). For example, the pad unit PAD of the first force sensor 510 may be provided at the upper end of the first force sensor 510 in the second direction (or the Y-axis direction).

[0218] like Figure 17 As shown in FIG, when the display circuit board 310 is unfolded, the first flexible circuit board 530 can be connected to the first connector 311a of the display circuit board 310 instead of being bent toward the bottom of the display panel 300. Therefore, the first flexible circuit board 530 can have a curved shape such as an L shape. That is, the first flexible circuit board 530 can be formed to extend from the end of the first force sensor 510 in the second direction (or Y-axis direction) and bend toward the display circuit board 310 in a direction opposite to the first direction (or X-axis direction).

[0219] The second flexible circuit board 540 electrically connects the second force sensor 520 and the display circuit board 310. A first end of the second flexible circuit board 540 can be connected to the second connector 311b of the display circuit board 310. To this end, a connector connection portion can be provided at the first end of the second flexible circuit board 540. A second end of the second flexible circuit board 540 can be connected to a pad unit provided at the second force sensor 520. The second end of the second flexible circuit board 540 can be attached to the pad unit of the second force sensor 520.

[0220] Specifically, the second force sensor 520 may have a rectangular shape having a short side extending in the first direction (or the X-axis direction) and a long side extending in the second direction (or the Y-axis direction). In this case, the pad unit of the second force sensor 520 may be provided at one end of the second force sensor 520 in the second direction (or the Y-axis direction). For example, the pad unit of the second force sensor 520 may be provided at the upper end of the second force sensor 520 in the second direction (or the Y-axis direction).

[0221] like Figure 17 As shown in FIG, when the display circuit board 310 is unfolded, the second flexible circuit board 540 can be connected to the second connector 311b of the display circuit board 310 instead of being bent toward the bottom of the display panel 300. Therefore, the second flexible circuit board 540 can have a curved shape such as an L shape. That is, the second flexible circuit board 540 can be formed to extend from the end of the second force sensor 520 in the second direction (or Y-axis direction) and bend toward the display circuit board 310 in the first direction (or X-axis direction).

[0222] like Figure 18 As shown in FIG, the display circuit board 310, the first flexible circuit board 530 and the second flexible circuit board 540 can be bent at least once. Specifically, after the first flexible circuit board 530 and the second flexible circuit board 540 are connected to the first connector 311a and the second connector 311b of the display circuit board 310, respectively, as shown in FIG. Figure 18 As shown in FIG, the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540 may be bent toward the bottom of the display panel 300, specifically, toward the bottom of the panel bottom member 400, and then may be fixed.

[0223] In this case, the second end of the first flexible circuit board 530 is attached to the pad unit PAD of the first force sensor 510, while the first end of the first flexible circuit board 530 can be disposed below the panel bottom member 400 because the first flexible circuit board 530 is bent toward the bottom of the panel bottom member 400. Similarly, the second end of the second flexible circuit board 540 is attached to the pad unit of the second force sensor 520, while the first end of the second flexible circuit board 540 can be disposed below the panel bottom member 400 because the second flexible circuit board 540 is bent toward the bottom of the panel bottom member 400. Similarly, one side of the display circuit board 310 can be attached to the top or bottom surface of the display panel 300, while the other side of the display circuit board 310 can be disposed below the panel bottom member 400 because the display circuit board 310 is bent toward the bottom of the panel bottom member 400.

[0224] according to Figure 17 and Figure 18In the exemplary embodiment of the present invention, the first force sensor 510 may be connected to the display circuit board 310 via the first flexible circuit board 530, and the second force sensor 520 may be connected to the display circuit board 310 via the second flexible circuit board 540. Therefore, the first force sensor 510 and the second force sensor 520 may be stably electrically connected to the force sensing unit 330 of the display circuit board 310.

[0225] Figure 20 It shows that Figure 2 1 is a bottom view of another exemplary embodiment of a display panel 300 attached to a cover window 100 before the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540 are bent downward. Figure 21 It shows that Figure 2 1 is a bottom view of another exemplary embodiment of a display panel 300 attached to a cover window 100 after the display circuit board 310, the first flexible circuit board 530, and the second flexible circuit board 540 are bent downward.

[0226] Figure 20 and Figure 21 An exemplary embodiment of Figure 17 and Figure 18 The difference of the exemplary embodiment of FIG. 5 is that the display circuit board 310 includes a single connector connected to both the first flexible circuit board 530 and the second flexible circuit board 540, ie, the fourth connector 311d. Hereinafter, the description will mainly focus on Figure 20 and Figure 21 An exemplary embodiment of Figure 17 and Figure 18 The differences between the exemplary embodiments are shown in FIG.

[0227] Reference Figure 20 and Figure 21 The display circuit board 310 may include a fourth connector 311d, which may include a plurality of connector receiving portions into which the plurality of connector connecting portions may be inserted. The fourth connector 311d may be disposed in the second body portion 112a of the display circuit board 310. The first connector receiving portion of the fourth connector 311d may be disposed facing the first flexible circuit board 530 and may be connected to a connector connecting portion disposed at a first end of the first flexible circuit board 530 connected to the first force sensor 510. The second connector receiving portion of the fourth connector 311d may be disposed facing the second flexible circuit board 540 and may be connected to a connector connecting portion disposed at one end of the second flexible circuit board 540 connected to the second force sensor 520. Thus, the first force sensor 510 may be electrically connected to the force sensing unit 330, and the second force sensor 520 may be electrically connected to the force sensing unit 330.

[0228] according to Figure 20 and Figure 21 In the exemplary embodiment of the present invention, the first force sensor 510 may be connected to the display circuit board 310 via the first flexible circuit board 530, and the second force sensor 520 may be connected to the display circuit board 310 via the second flexible circuit board 540. Therefore, the first force sensor 510 and the second force sensor 520 may be stably electrically connected to the force sensing unit 330 of the display circuit board 310.

[0229] Figure 22 is a flowchart illustrating a method of manufacturing a display device constructed according to an exemplary embodiment of the present disclosure. Figure 23A 、 Figure 23B 、 Figure 23C 、 Figure 23D and Figure 23E is a perspective view illustrating a method of manufacturing a display device constructed according to an exemplary embodiment of the present disclosure.

[0230] Reference Figure 22 and Figure 23A , a first heat sink 410 is attached to the bottom surface of the display panel 300 ( S101 ).

[0231] The first heat sink 410 may include graphite or carbon nanotubes. The first heat sink 410 may be attached to the bottom surface of the display panel 300 using a roller R through a lamination process.

[0232] Specifically, if Figure 23A As shown in FIG, the display panel 300 includes a first region DR1 corresponding to a flat portion, a second region DR2 extending from one side of the first region DR1 and corresponding to a first curved portion, and a third region DR3 extending from the other side of the first region DR1 and corresponding to a second curved portion. When the second and third regions DR2 and DR3 of the display panel 300 are laminated using a roller R, the second and third regions DR2 and DR3 of the display panel 300 may be damaged. Therefore, a roller R may be placed on the bottom surface of the first heat sink 410 in the first region DR1 of the display panel 300, and then the first heat sink 410 may be pressurized using the roller R.

[0233] A light absorbing member may be attached to the bottom surface of the display panel 300, and a buffer member may be attached to the light absorbing member. In this case, the first heat sink 410 may be attached to the buffer member. The light absorbing member may include a light absorbing material such as a black pigment or dye. A buffer member may be provided below the light absorbing member. The buffer member absorbs external impacts and thus can prevent or reduce damage to the display panel 300. The buffer member may be formed of a polymer resin such as polyurethane, polycarbonate, polypropylene, or polyethylene, or may include an elastic material such as a sponge obtained by foaming rubber, urethane, or acrylic material. The buffer member may be a cushion layer. The first heat sink 410 may include graphite or carbon nanotubes.

[0234] Afterwards, refer to Figure 22 and Figure 23B , the first force sensor 510 and the second force sensor 520 are attached to the bottom surface of the second heat sink 420 ( S102 ).

[0235] Specifically, the first force sensor 510 may be attached to a first edge of the second heat sink 420, and the second force sensor 520 may be attached to a second edge of the second heat sink 420 opposite to the first edge of the second heat sink 420. The first force sensor 510 and the second force sensor 520 may be attached to the bottom surface of the second heat sink 420 via an adhesive member. The adhesive member may be a PSA.

[0236] Each of the first force sensor 510 and the second force sensor 520 may have a rectangular shape having a short side extending in the first direction (or the X-axis direction) and a long side extending in the second direction (or the Y-axis direction). In this case, the pad unit PAD of the first force sensor 510 and the pad unit of the second force sensor 520 may be provided at the ends of the first force sensor 510 and the second force sensor 520 in the second direction (or the Y-axis direction). The first flexible circuit board 530 may be attached to the pad unit PAD of the first force sensor 510, and the second flexible circuit board 540 may be attached to the pad unit of the second force sensor 520.

[0237] Afterwards, refer to Figure 22 and Figure 23C , the second heat sink 420 is attached to the bottom surface of the first heat sink 410 disposed under the display panel 300 ( S103 ).

[0238] The second heat sink 420 can block electromagnetic waves and can be formed as a thin film of a metal having excellent thermal conductivity such as Cu, Ni, ferrite, or Ag. The second heat sink 420 can be attached to the bottom surface of the display panel 300 by lamination using a roller R.

[0239] Specifically, if Figure 23C As shown in FIG, the display panel 300 includes a first region DR1 corresponding to a flat portion, a second region DR2 extending from one side of the first region DR1 and corresponding to a first curved portion, and a third region DR3 extending from the other side of the first region DR1 and corresponding to a second curved portion. Since the first force sensor 510 is provided on one side of the second heat sink 420, the first force sensor 510 can be provided in the third region DR3 of the display panel 300. Furthermore, since the second force sensor 520 is provided on the other side of the second heat sink 420, the second force sensor 520 can be provided in the second region DR2 of the display panel 300. When the second and third regions DR2 and DR3 of the display panel 300 are laminated using a roller R, not only the second and third regions DR2 and DR3 of the display panel 300 but also the first and second force sensors 510 and 520 attached to the bottom surface of the second heat sink 420 may be damaged. Therefore, a roller R can be placed on the bottom surface of the second heat sink 420 in the first region DR1 of the display panel 300, and then the roller R can be used to apply pressure to the second heat sink 420.

[0240] The first flexible circuit board 530 may be attached to the pad unit PAD of the first force sensor 510, located at one end of the first force sensor 510, and the second flexible circuit board 540 may be attached to the pad unit of the second force sensor 520, located at one end of the second force sensor 520. The first flexible circuit board 530 may be formed to extend from one end of the first force sensor 510 in the second direction (or Y-axis direction) and bend toward the display circuit board 310 in a direction opposite to the first direction (or X-axis direction). The second flexible circuit board 540 may be formed to extend from one end of the second force sensor 520 in the second direction (or Y-axis direction) and bend toward the display circuit board 310 in the first direction (or X-axis direction). As a result, when lamination is performed using the roller R, the first and second flexible circuit boards 530 and 540 are not disposed in the first region DR1 corresponding to the flat portion of the display panel 300. Therefore, it is possible to prevent or reduce the first and second flexible circuit boards 530 and 540 from being damaged by lamination or interfering with lamination. In the above steps, the display circuit board 310 has already been attached to the top surface of the display panel 300, but the present disclosure is not limited thereto. In an embodiment, after attaching the first flexible circuit board 530 and the second flexible circuit board 540 to the pad unit PAD of the first force sensor 510 and the pad unit of the second force sensor 520, the display circuit board 310 can be attached to the top surface of the display panel 300.

[0241] exist Figure 22In the exemplary embodiment, because the first force sensor 510 and the second force sensor 520 are attached to the bottom surface of the second heat sink 420 and then the second heat sink 420 is attached to the bottom surface of the display panel 300, the alignment accuracy of the first force sensor 510 and the second force sensor 520 can be improved compared to the case where the second heat sink 420 is attached to the bottom surface of the display panel 300 and then the first force sensor 510 and the second force sensor 520 are attached to the second heat sink 420.

[0242] The second heat sink 420 is Figure 22 、 Figure 23A 、 Figure 23B and Figure 23C 3. The bottom surface of the first heat sink 410 is shown as being attached to the bottom surface of the display panel 300, but the present disclosure is not limited thereto. The first heat sink 410 may not be provided. In this case, the second heat sink 420 may be directly attached to the bottom surface of the display panel 300. Alternatively, the second heat sink 420 may be attached to the bottom surface of the light absorbing member or the bottom surface of the buffer member on the bottom surface of the display panel 300.

[0243] Afterwards, refer to Figure 22 and Figure 23D , the first flexible circuit board 530 and the second flexible circuit board 540 are connected to the display circuit board 310 (S104).

[0244] Specifically, the connector connection portion provided at one end of the first flexible circuit board 530 is connected to the first connector 311 a of the display circuit board 310 , and the connector connection portion provided at one end of the second flexible circuit board 540 is connected to the second connector 311 b of the display circuit board 310 .

[0245] Afterwards, refer to Figure 22 and Figure 23E The display circuit board 310 , the first flexible circuit board 530 , and the second flexible circuit board 540 are bent toward the bottom of the display panel 300 , specifically, toward the bottom of the panel bottom member 400 ( S105 ).

[0246] The display circuit board 310 bent toward the bottom of the display panel 300 may be fixed to the fixing holes FH formed in the frame 600 by a fixing member.

[0247] According to the foregoing and other exemplary embodiments of the present disclosure, the sensing wires electrically connected to the sensing electrodes of each force sensing unit of the force sensor can have different resistances according to the different contact areas between the force sensing layer and the drive electrode / sensing electrode (depending on the force applied to the force sensor), and the resistances of the sensing wires electrically connected to the sensing electrodes can be different. Therefore, the force or pressure from the user's hand can be detected by sensing the current change or voltage change from the sensing wires, and as a result, the force sensor can be used as an input device.

[0248] In addition, the first force sensor can be connected to the display circuit board via the first flexible circuit board, and the second force sensor can be connected to the display circuit board via the second flexible circuit board, so the first force sensor and the second force sensor can be stably electrically connected to the force sensing unit of the display circuit board.

[0249] In addition, attaching the force sensor to the bottom surface of the heat sink and attaching the heat sink to the bottom surface of the display panel can improve the alignment accuracy of the force sensor compared to the traditional situation of attaching the heat sink to the bottom surface of the display panel and then attaching the force sensor to the heat sink.

[0250] In addition, the first and second flexible circuit boards are not placed in the first area of ​​the display panel corresponding to the flat portion of the display panel, and thus, when lamination is performed using a roller, the first and second flexible circuit boards can be prevented or reduced from being damaged by lamination or interfering with lamination.

[0251] Furthermore, the waterproof member is disposed adjacent to the first and second force sensors, thereby preventing or reducing moisture or dust from penetrating through the gap between the display panel and the frame. This provides a waterproof and dustproof display device.

[0252] Although certain exemplary embodiments and implementations have been described herein, other embodiments and modifications will be apparent from this description. Accordingly, the inventive concept is not limited to such embodiments, but rather to the broader scope of the appended claims and various obvious modifications and equivalent arrangements as will be apparent to those skilled in the art.

Claims

1. A display device, comprising: a display panel comprising a flat portion and a curved portion; a first force sensor, disposed below the curved portion of the display panel; a display circuit board attached to the first side of the display panel; as well as a first flexible circuit board, connecting the first force sensor and the display circuit board; The display circuit board and the first flexible circuit board are bent at least once, so that at least two portions of the first flexible circuit board face each other in a thickness direction of the display panel and overlap the bent portion of the display panel. 2 . The display device according to claim 1 , further comprising a panel bottom member disposed below the display panel.

3. The display device according to claim 2, wherein: The first force sensor is attached to the bottom surface of the panel bottom member, and The first flexible circuit board is bent toward the bottom of the panel bottom member, and the first flexible circuit board includes: a first end of the first flexible circuit board being attached to a first pad unit of the first force sensor; and The second end of the first flexible circuit board is arranged below the panel bottom member.

4. The display device according to claim 3, wherein The first pad unit of the first force sensor is provided at one end of the first force sensor in a longitudinal direction of the first force sensor.

5. The display device according to claim 3, wherein The first flexible circuit board extends from the first pad unit of the first force sensor in a first direction, and The first flexible circuit board is bent in a second direction intersecting the first direction. The display device according to claim 2 , wherein: The display circuit board is bent toward the bottom side of the panel bottom member, and the display circuit board includes: The first side of the display circuit board is attached to one surface of the display panel; and The second side of the display circuit board is arranged below the panel bottom component.

7. The display device according to claim 3, further comprising: a second force sensor, disposed below the display panel; as well as a second flexible circuit board, connecting the second force sensor and the display circuit board; Wherein, the second flexible circuit board is bent at least once.

8. The display device according to claim 7, wherein: The second force sensor is attached to the bottom surface of the panel bottom member, and The second flexible circuit board is bent toward the bottom of the panel bottom member, and the second flexible circuit board includes: a first end of the second flexible circuit board attached to the second pad unit of the second force sensor; and The second end of the second flexible circuit board is arranged below the panel bottom member.

9. The display device according to claim 8, wherein The second pad unit of the second force sensor is provided at one end of the second force sensor in a longitudinal direction of the second force sensor.

10. The display device according to claim 8, wherein The second flexible circuit board extends from the second pad unit of the second force sensor in a first direction, and The second flexible circuit board is bent in a second direction intersecting the first direction.

11. The display device according to claim 8, wherein The display circuit board comprises: a first connector connected to a first connector connection portion of the first flexible circuit board, the first connector connection portion being provided at the second end of the first flexible circuit board; and The second connector is connected to a second connector connection portion of the second flexible circuit board, the second connector connection portion being provided at the second end of the second flexible circuit board.

12. The display device according to claim 11, wherein The first connector is disposed adjacent to a first side of the display circuit board, and The second connector is disposed adjacent to a second side of the display circuit board, and the second side is opposite to the first side of the display circuit board.

13. The display device according to claim 8, wherein The display circuit board comprises: a first connector receiving portion connected to a first connector connecting portion of the first flexible circuit board, the first connector connecting portion being provided at the second end of the first flexible circuit board; and The second connector receiving portion is connected to a second connector connecting portion of the second flexible circuit board, the second connector connecting portion being provided at the second end of the second flexible circuit board.

14. The display device according to claim 1, wherein The first side of the display panel is partially recessed in a plan view, and the display panel includes a first protrusion and a second protrusion in which pixels are formed to display an image.

15. The display device according to claim 14, wherein The display circuit board is disposed on the first protrusion and the second protrusion.

16. The display device according to claim 7, wherein: The flat portion of the display panel has a first side and a second side opposite to the first side, wherein the curved portion of the display panel includes a first curved portion extending from the first side of the flat portion and a second curved portion extending from the second side of the flat portion, and wherein the first force sensor and the second force sensor are respectively arranged to overlap with the first curved portion and the second curved portion.

17. The display device according to claim 1, wherein The first force sensor includes force sensor units, each of the force sensor units including: driving electrodes and sensing electrodes, disposed on a surface of the first substrate; and The force sensing layer is disposed on a surface of the second substrate facing the first substrate. 18 . The display device according to claim 7 , further comprising a waterproof member disposed adjacent to the first force sensor and the second force sensor.

19. A method for manufacturing a display device, the method comprising: attaching a first force sensor to one edge of the bottom surface of the heat sink; attaching the heat sink to a bottom surface of a display panel by lamination using a roller, wherein the display panel includes a first region having a flat planar surface and a second region extending from one side of the first region, the second region being curved, and the first force sensor is disposed in the second region; attaching a first flexible circuit board to the pad unit of the first force sensor; attaching a display circuit board to one side of the display panel; connecting the first flexible circuit board to a first connector of the display circuit board; and The display circuit board and the first flexible circuit board are fixed by bending the display circuit board and the first flexible circuit board toward a bottom side of the display panel so that at least two portions of the first flexible circuit board face each other in a thickness direction of the display panel and overlap with the second area of ​​the display panel.

20. The method according to claim 19, wherein The steps of attaching the heat sink include: The roller is placed in the first region of the display panel and on the bottom surface of the heat sink, and the heat sink is pressurized with the roller.

Images